[PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Ajay Kumar]

This series is based on exynos-drm-next branch of Inki Dae's tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git

I have tested this after adding few DT changes for exynos5250-snow,
exynos5420-peach-pit and exynos5800-peach-pi boards.

This patchset also consolidates various inputs from the drm community
regarding the bridge chaining concept:
(1) [RFC V2 0/3] drm/bridge: panel and chaining
	http://www.spinics.net/lists/linux-samsung-soc/msg30160.html
(2) [RFC V3 0/3] drm/bridge: panel and chaining
	http://www.spinics.net/lists/linux-samsung-soc/msg30507.html

Changes since V2:
	-- Address comments from Jingoo Han for ps8622 driver
	-- Address comments from Daniel, Rob and Thierry regarding
	   bridge chaining
	-- Address comments from Thierry regarding the names for
	   new drm_panel functions

Changes since V3:
	-- Remove hotplug based initialization of exynos_dp
	-- Make exynos_dp work directly with drm_panel, remove
	   dependency on panel_binder
	-- Minor cleanups in panel_binder and panel_lvds driver

The following patches can be divided into 2 groups:
	patches 1 to 4: add drm_panel support to exynos_dp(peach-pi)
	patches 5 to 10: chaining of bridges and drm_panel(snow and peach-pit)

Ajay Kumar (8):
  [PATCH V4 1/10] drm/exynos: Move DP setup out of hotplug workqueue
  [PATCH V4 2/10] drm/panel: add prepare and unprepare routines
  [PATCH V4 3/10] drm/exynos: dp: modify driver to support drm_panel
  [PATCH V4 4/10] drm/panel: Add driver for lvds/edp based panels
  [PATCH V4 5/10] drm/bridge: add helper functions to support bridge chain
  [PATCH V4 6/10] drm/bridge: Add a driver which binds drm_bridge with drm_panel
  [PATCH V4 7/10] drm/bridge: ptn3460: Support bridge chaining
  [PATCH V4 8/10] drm/exynos: dp: create bridge chain using ptn3460 and
		  panel_binder

Vincent Palatin (1):
  [PATCH V4 9/10] drm/bridge: Add ps8622/ps8625 bridge driver

Rahul Sharma (1):
  [PATCH V4 10/10] drm/exynos: Add ps8622 lvds bridge discovery to DP driver

 .../devicetree/bindings/drm/bridge/ps8622.txt      |   21 +
 .../devicetree/bindings/panel/panel-lvds.txt       |   50 +++
 .../devicetree/bindings/video/exynos_dp.txt        |    2 +
 drivers/gpu/drm/bridge/Kconfig                     |   15 +
 drivers/gpu/drm/bridge/Makefile                    |    2 +
 drivers/gpu/drm/bridge/panel_binder.c              |  193 ++++++++
 drivers/gpu/drm/bridge/ps8622.c                    |  475 ++++++++++++++++++++
 drivers/gpu/drm/bridge/ptn3460.c                   |  136 +-----
 drivers/gpu/drm/exynos/Kconfig                     |    1 +
 drivers/gpu/drm/exynos/exynos_dp_core.c            |   87 +++-
 drivers/gpu/drm/exynos/exynos_dp_core.h            |    2 +
 drivers/gpu/drm/panel/Kconfig                      |   10 +
 drivers/gpu/drm/panel/Makefile                     |    1 +
 drivers/gpu/drm/panel/panel-lvds.c                 |  262 +++++++++++
 include/drm/bridge/panel_binder.h                  |   44 ++
 include/drm/bridge/ps8622.h                        |   41 ++
 include/drm/bridge/ptn3460.h                       |   15 +-
 include/drm/drm_crtc.h                             |   72 +++
 include/drm/drm_panel.h                            |   18 +
 19 files changed, 1309 insertions(+), 138 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/drm/bridge/ps8622.txt
 create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
 create mode 100644 drivers/gpu/drm/bridge/panel_binder.c
 create mode 100644 drivers/gpu/drm/bridge/ps8622.c
 create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
 create mode 100644 include/drm/bridge/panel_binder.h
 create mode 100644 include/drm/bridge/ps8622.h

-- 
1.7.9.5

[PATCH V4 01/10] drm/exynos: Move DP setup out of hotplug workqueue

[Ajay Kumar]

Move the DP training and video enable from the hotplug handler into
a seperate function and call the same during dpms ON.

With existing code, DP HPD should be generated just few ms before
calling enable_irq in dp_poweron.

This patch removes that stringent time constraint.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_dp_core.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 5e05dbc..96b4e82 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -875,10 +875,18 @@ static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
 static void exynos_dp_hotplug(struct work_struct *work)
 {
 	struct exynos_dp_device *dp;
-	int ret;
 
 	dp = container_of(work, struct exynos_dp_device, hotplug_work);
 
+	if (dp->drm_dev)
+		drm_helper_hpd_irq_event(dp->drm_dev);
+}
+
+static void exynos_dp_setup(void *in_ctx)
+{
+	struct exynos_dp_device *dp = in_ctx;
+	int ret;
+
 	ret = exynos_dp_detect_hpd(dp);
 	if (ret) {
 		/* Cable has been disconnected, we're done */
@@ -1059,6 +1067,7 @@ static void exynos_dp_poweron(struct exynos_dp_device *dp)
 	exynos_dp_phy_init(dp);
 	exynos_dp_init_dp(dp);
 	enable_irq(dp->irq);
+	exynos_dp_setup(dp);
 }
 
 static void exynos_dp_poweroff(struct exynos_dp_device *dp)
-- 
1.7.9.5

Re: [PATCH V4 01/10] drm/exynos: Move DP setup out of hotplug workqueue

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:56 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> Move the DP training and video enable from the hotplug handler into
> a seperate function and call the same during dpms ON.
>
> With existing code, DP HPD should be generated just few ms before
> calling enable_irq in dp_poweron.
>
> This patch removes that stringent time constraint.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos_dp_core.c |   11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
> index 5e05dbc..96b4e82 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
> @@ -875,10 +875,18 @@ static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
>  static void exynos_dp_hotplug(struct work_struct *work)
>  {
>         struct exynos_dp_device *dp;
> -       int ret;
>
>         dp = container_of(work, struct exynos_dp_device, hotplug_work);
>
> +       if (dp->drm_dev)
> +               drm_helper_hpd_irq_event(dp->drm_dev);
> +}
> +
> +static void exynos_dp_setup(void *in_ctx)
> +{
> +       struct exynos_dp_device *dp = in_ctx;
> +       int ret;
> +
>         ret = exynos_dp_detect_hpd(dp);
>         if (ret) {
>                 /* Cable has been disconnected, we're done */
> @@ -1059,6 +1067,7 @@ static void exynos_dp_poweron(struct exynos_dp_device *dp)
>         exynos_dp_phy_init(dp);
>         exynos_dp_init_dp(dp);
>         enable_irq(dp->irq);
> +       exynos_dp_setup(dp);
>  }
>
>  static void exynos_dp_poweroff(struct exynos_dp_device *dp)
> --
> 1.7.9.5
>

[PATCH V4 02/10] drm/panel: add prepare and unprepare routines

[Ajay Kumar]

Most of the panels need an init sequence as mentioned below:
	-- poweron LCD unit/LCD_EN
	-- start video data
	-- poweron LED unit/BACKLIGHT_EN
And, a de-init sequence as mentioned below:
	-- poweroff LED unit/BACKLIGHT_EN
	-- stop video data
	-- poweroff LCD unit/LCD_EN
With existing callbacks for drm panel, we cannot accomodate such panels,
since only two callbacks, i.e "panel_enable" and panel_disable are supported.

This patch adds:
	-- "prepare" callback which can be called before
	the actual video data is on, and then call the "enable"
	callback after the video data is available.

	-- "unprepare" callback which can be called after
	the video data is off, and use "disable" callback
	to do something before switching off the video data.

Now, we can easily map the above scenario as shown below:
	poweron LCD unit/LCD_EN = "prepare" callback
	poweron LED unit/BACKLIGHT_EN = "enable" callback
	poweroff LED unit/BACKLIGHT_EN = "disable" callback
	poweroff LCD unit/LCD_EN = "unprepare" callback

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 include/drm/drm_panel.h |   18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index c2ab77a..9addc69 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -31,7 +31,9 @@ struct drm_device;
 struct drm_panel;
 
 struct drm_panel_funcs {
+	int (*unprepare)(struct drm_panel *panel);
 	int (*disable)(struct drm_panel *panel);
+	int (*prepare)(struct drm_panel *panel);
 	int (*enable)(struct drm_panel *panel);
 	int (*get_modes)(struct drm_panel *panel);
 };
@@ -46,6 +48,14 @@ struct drm_panel {
 	struct list_head list;
 };
 
+static inline int drm_panel_unprepare(struct drm_panel *panel)
+{
+	if (panel && panel->funcs && panel->funcs->unprepare)
+		return panel->funcs->unprepare(panel);
+
+	return panel ? -ENOSYS : -EINVAL;
+}
+
 static inline int drm_panel_disable(struct drm_panel *panel)
 {
 	if (panel && panel->funcs && panel->funcs->disable)
@@ -54,6 +64,14 @@ static inline int drm_panel_disable(struct drm_panel *panel)
 	return panel ? -ENOSYS : -EINVAL;
 }
 
+static inline int drm_panel_prepare(struct drm_panel *panel)
+{
+	if (panel && panel->funcs && panel->funcs->prepare)
+		return panel->funcs->prepare(panel);
+
+	return panel ? -ENOSYS : -EINVAL;
+}
+
 static inline int drm_panel_enable(struct drm_panel *panel)
 {
 	if (panel && panel->funcs && panel->funcs->enable)
-- 
1.7.9.5

Re: [PATCH V4 02/10] drm/panel: add prepare and unprepare routines

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> Most of the panels need an init sequence as mentioned below:
>         -- poweron LCD unit/LCD_EN
>         -- start video data
>         -- poweron LED unit/BACKLIGHT_EN
> And, a de-init sequence as mentioned below:
>         -- poweroff LED unit/BACKLIGHT_EN
>         -- stop video data
>         -- poweroff LCD unit/LCD_EN
> With existing callbacks for drm panel, we cannot accomodate such panels,
> since only two callbacks, i.e "panel_enable" and panel_disable are supported.
>
> This patch adds:
>         -- "prepare" callback which can be called before
>         the actual video data is on, and then call the "enable"
>         callback after the video data is available.
>
>         -- "unprepare" callback which can be called after
>         the video data is off, and use "disable" callback
>         to do something before switching off the video data.
>
> Now, we can easily map the above scenario as shown below:
>         poweron LCD unit/LCD_EN = "prepare" callback
>         poweron LED unit/BACKLIGHT_EN = "enable" callback
>         poweroff LED unit/BACKLIGHT_EN = "disable" callback
>         poweroff LCD unit/LCD_EN = "unprepare" callback
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
>  include/drm/drm_panel.h |   18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
>
> diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
> index c2ab77a..9addc69 100644
> --- a/include/drm/drm_panel.h
> +++ b/include/drm/drm_panel.h
> @@ -31,7 +31,9 @@ struct drm_device;
>  struct drm_panel;
>
>  struct drm_panel_funcs {
> +       int (*unprepare)(struct drm_panel *panel);
>         int (*disable)(struct drm_panel *panel);
> +       int (*prepare)(struct drm_panel *panel);
>         int (*enable)(struct drm_panel *panel);
>         int (*get_modes)(struct drm_panel *panel);
>  };
> @@ -46,6 +48,14 @@ struct drm_panel {
>         struct list_head list;
>  };
>
> +static inline int drm_panel_unprepare(struct drm_panel *panel)
> +{
> +       if (panel && panel->funcs && panel->funcs->unprepare)
> +               return panel->funcs->unprepare(panel);
> +
> +       return panel ? -ENOSYS : -EINVAL;
> +}
> +
>  static inline int drm_panel_disable(struct drm_panel *panel)
>  {
>         if (panel && panel->funcs && panel->funcs->disable)
> @@ -54,6 +64,14 @@ static inline int drm_panel_disable(struct drm_panel *panel)
>         return panel ? -ENOSYS : -EINVAL;
>  }
>
> +static inline int drm_panel_prepare(struct drm_panel *panel)
> +{
> +       if (panel && panel->funcs && panel->funcs->prepare)
> +               return panel->funcs->prepare(panel);
> +
> +       return panel ? -ENOSYS : -EINVAL;
> +}
> +
>  static inline int drm_panel_enable(struct drm_panel *panel)
>  {
>         if (panel && panel->funcs && panel->funcs->enable)
> --
> 1.7.9.5
>

[PATCH V4 03/10] drm/exynos: dp: modify driver to support drm_panel

[Ajay Kumar]

Add drm_panel controls to support powerup/down of the
eDP panel, if one is present at the sink side.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 .../devicetree/bindings/video/exynos_dp.txt        |    2 +
 drivers/gpu/drm/exynos/Kconfig                     |    1 +
 drivers/gpu/drm/exynos/exynos_dp_core.c            |   45 ++++++++++++++++----
 drivers/gpu/drm/exynos/exynos_dp_core.h            |    2 +
 4 files changed, 41 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/video/exynos_dp.txt b/Documentation/devicetree/bindings/video/exynos_dp.txt
index 53dbccf..c029a09 100644
--- a/Documentation/devicetree/bindings/video/exynos_dp.txt
+++ b/Documentation/devicetree/bindings/video/exynos_dp.txt
@@ -51,6 +51,8 @@ Required properties for dp-controller:
 			LANE_COUNT1 = 1, LANE_COUNT2 = 2, LANE_COUNT4 = 4
 	- display-timings: timings for the connected panel as described by
 		Documentation/devicetree/bindings/video/display-timing.txt
+	-edp-panel:
+		phandle for the edp/lvds drm_panel node.
 
 Optional properties for dp-controller:
 	-interlaced:
diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
index 178d2a9..fd1c070 100644
--- a/drivers/gpu/drm/exynos/Kconfig
+++ b/drivers/gpu/drm/exynos/Kconfig
@@ -52,6 +52,7 @@ config DRM_EXYNOS_DP
 	bool "EXYNOS DRM DP driver support"
 	depends on DRM_EXYNOS_FIMD && ARCH_EXYNOS && (DRM_PTN3460=n || DRM_PTN3460=y || DRM_PTN3460=DRM_EXYNOS)
 	default DRM_EXYNOS
+	select DRM_PANEL
 	help
 	  This enables support for DP device.
 
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 96b4e82..aca739d 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -28,6 +28,7 @@
 #include <drm/drmP.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
+#include <drm/drm_panel.h>
 #include <drm/bridge/ptn3460.h>
 
 #include "exynos_drm_drv.h"
@@ -1029,6 +1030,9 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display,
 	drm_sysfs_connector_add(connector);
 	drm_mode_connector_attach_encoder(connector, encoder);
 
+	if (dp->edp_panel)
+		drm_panel_attach(dp->edp_panel, &dp->connector);
+
 	return 0;
 }
 
@@ -1063,11 +1067,13 @@ static void exynos_dp_poweron(struct exynos_dp_device *dp)
 	if (dp->dpms_mode == DRM_MODE_DPMS_ON)
 		return;
 
+	drm_panel_prepare(dp->edp_panel);
 	clk_prepare_enable(dp->clock);
 	exynos_dp_phy_init(dp);
 	exynos_dp_init_dp(dp);
 	enable_irq(dp->irq);
 	exynos_dp_setup(dp);
+	drm_panel_enable(dp->edp_panel);
 }
 
 static void exynos_dp_poweroff(struct exynos_dp_device *dp)
@@ -1075,10 +1081,12 @@ static void exynos_dp_poweroff(struct exynos_dp_device *dp)
 	if (dp->dpms_mode != DRM_MODE_DPMS_ON)
 		return;
 
+	drm_panel_disable(dp->edp_panel);
 	disable_irq(dp->irq);
 	flush_work(&dp->hotplug_work);
 	exynos_dp_phy_exit(dp);
 	clk_disable_unprepare(dp->clock);
+	drm_panel_unprepare(dp->edp_panel);
 }
 
 static void exynos_dp_dpms(struct exynos_drm_display *display, int mode)
@@ -1209,8 +1217,17 @@ err:
 static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
 {
 	int ret;
+	struct device_node *videomode_parent;
+
+	/* Receive video timing info from panel node
+	 * if there is a panel node
+	 */
+	if (dp->panel_node)
+		videomode_parent = dp->panel_node;
+	else
+		videomode_parent = dp->dev->of_node;
 
-	ret = of_get_videomode(dp->dev->of_node, &dp->panel.vm,
+	ret = of_get_videomode(videomode_parent, &dp->panel.vm,
 			OF_USE_NATIVE_MODE);
 	if (ret) {
 		DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
@@ -1224,16 +1241,10 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 	struct platform_device *pdev = to_platform_device(dev);
 	struct drm_device *drm_dev = data;
 	struct resource *res;
-	struct exynos_dp_device *dp;
+	struct exynos_dp_device *dp = exynos_dp_display.ctx;
 	unsigned int irq_flags;
-
 	int ret = 0;
 
-	dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
-				GFP_KERNEL);
-	if (!dp)
-		return -ENOMEM;
-
 	dp->dev = &pdev->dev;
 	dp->dpms_mode = DRM_MODE_DPMS_OFF;
 
@@ -1307,7 +1318,6 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 	disable_irq(dp->irq);
 
 	dp->drm_dev = drm_dev;
-	exynos_dp_display.ctx = dp;
 
 	platform_set_drvdata(pdev, &exynos_dp_display);
 
@@ -1334,6 +1344,8 @@ static const struct component_ops exynos_dp_ops = {
 
 static int exynos_dp_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
+	struct exynos_dp_device *dp;
 	int ret;
 
 	ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR,
@@ -1341,6 +1353,21 @@ static int exynos_dp_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
+				GFP_KERNEL);
+	if (!dp)
+		return -ENOMEM;
+
+	dp->panel_node = of_parse_phandle(dev->of_node, "edp-panel", 0);
+	if (dp->panel_node) {
+		dp->edp_panel = of_drm_find_panel(dp->panel_node);
+		of_node_put(dp->panel_node);
+		if (!dp->edp_panel)
+			return -EPROBE_DEFER;
+	}
+
+	exynos_dp_display.ctx = dp;
+
 	ret = component_add(&pdev->dev, &exynos_dp_ops);
 	if (ret)
 		exynos_drm_component_del(&pdev->dev,
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
index 02cc4f9..3c29e4e 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.h
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.h
@@ -146,9 +146,11 @@ struct link_train {
 
 struct exynos_dp_device {
 	struct device		*dev;
+	struct device_node	*panel_node;
 	struct drm_device	*drm_dev;
 	struct drm_connector	connector;
 	struct drm_encoder	*encoder;
+	struct drm_panel	*edp_panel;
 	struct clk		*clock;
 	unsigned int		irq;
 	void __iomem		*reg_base;
-- 
1.7.9.5

Re: [PATCH V4 03/10] drm/exynos: dp: modify driver to support drm_panel

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> Add drm_panel controls to support powerup/down of the
> eDP panel, if one is present at the sink side.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
>  .../devicetree/bindings/video/exynos_dp.txt        |    2 +
>  drivers/gpu/drm/exynos/Kconfig                     |    1 +
>  drivers/gpu/drm/exynos/exynos_dp_core.c            |   45 ++++++++++++++++----
>  drivers/gpu/drm/exynos/exynos_dp_core.h            |    2 +
>  4 files changed, 41 insertions(+), 9 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/video/exynos_dp.txt b/Documentation/devicetree/bindings/video/exynos_dp.txt
> index 53dbccf..c029a09 100644
> --- a/Documentation/devicetree/bindings/video/exynos_dp.txt
> +++ b/Documentation/devicetree/bindings/video/exynos_dp.txt
> @@ -51,6 +51,8 @@ Required properties for dp-controller:
>                         LANE_COUNT1 = 1, LANE_COUNT2 = 2, LANE_COUNT4 = 4
>         - display-timings: timings for the connected panel as described by
>                 Documentation/devicetree/bindings/video/display-timing.txt
> +       -edp-panel:
> +               phandle for the edp/lvds drm_panel node.
>
>  Optional properties for dp-controller:
>         -interlaced:
> diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
> index 178d2a9..fd1c070 100644
> --- a/drivers/gpu/drm/exynos/Kconfig
> +++ b/drivers/gpu/drm/exynos/Kconfig
> @@ -52,6 +52,7 @@ config DRM_EXYNOS_DP
>         bool "EXYNOS DRM DP driver support"
>         depends on DRM_EXYNOS_FIMD && ARCH_EXYNOS && (DRM_PTN3460=n || DRM_PTN3460=y || DRM_PTN3460=DRM_EXYNOS)
>         default DRM_EXYNOS
> +       select DRM_PANEL
>         help
>           This enables support for DP device.
>
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
> index 96b4e82..aca739d 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
> @@ -28,6 +28,7 @@
>  #include <drm/drmP.h>
>  #include <drm/drm_crtc.h>
>  #include <drm/drm_crtc_helper.h>
> +#include <drm/drm_panel.h>
>  #include <drm/bridge/ptn3460.h>
>
>  #include "exynos_drm_drv.h"
> @@ -1029,6 +1030,9 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display,
>         drm_sysfs_connector_add(connector);
>         drm_mode_connector_attach_encoder(connector, encoder);
>
> +       if (dp->edp_panel)
> +               drm_panel_attach(dp->edp_panel, &dp->connector);
> +
>         return 0;
>  }
>
> @@ -1063,11 +1067,13 @@ static void exynos_dp_poweron(struct exynos_dp_device *dp)
>         if (dp->dpms_mode == DRM_MODE_DPMS_ON)
>                 return;
>
> +       drm_panel_prepare(dp->edp_panel);
>         clk_prepare_enable(dp->clock);
>         exynos_dp_phy_init(dp);
>         exynos_dp_init_dp(dp);
>         enable_irq(dp->irq);
>         exynos_dp_setup(dp);
> +       drm_panel_enable(dp->edp_panel);
>  }
>
>  static void exynos_dp_poweroff(struct exynos_dp_device *dp)
> @@ -1075,10 +1081,12 @@ static void exynos_dp_poweroff(struct exynos_dp_device *dp)
>         if (dp->dpms_mode != DRM_MODE_DPMS_ON)
>                 return;
>
> +       drm_panel_disable(dp->edp_panel);
>         disable_irq(dp->irq);
>         flush_work(&dp->hotplug_work);
>         exynos_dp_phy_exit(dp);
>         clk_disable_unprepare(dp->clock);
> +       drm_panel_unprepare(dp->edp_panel);
>  }
>
>  static void exynos_dp_dpms(struct exynos_drm_display *display, int mode)
> @@ -1209,8 +1217,17 @@ err:
>  static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
>  {
>         int ret;
> +       struct device_node *videomode_parent;
> +
> +       /* Receive video timing info from panel node
> +        * if there is a panel node
> +        */
> +       if (dp->panel_node)
> +               videomode_parent = dp->panel_node;
> +       else
> +               videomode_parent = dp->dev->of_node;
>
> -       ret = of_get_videomode(dp->dev->of_node, &dp->panel.vm,
> +       ret = of_get_videomode(videomode_parent, &dp->panel.vm,
>                         OF_USE_NATIVE_MODE);
>         if (ret) {
>                 DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
> @@ -1224,16 +1241,10 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>         struct platform_device *pdev = to_platform_device(dev);
>         struct drm_device *drm_dev = data;
>         struct resource *res;
> -       struct exynos_dp_device *dp;
> +       struct exynos_dp_device *dp = exynos_dp_display.ctx;
>         unsigned int irq_flags;
> -
>         int ret = 0;
>
> -       dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
> -                               GFP_KERNEL);
> -       if (!dp)
> -               return -ENOMEM;
> -
>         dp->dev = &pdev->dev;
>         dp->dpms_mode = DRM_MODE_DPMS_OFF;
>
> @@ -1307,7 +1318,6 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>         disable_irq(dp->irq);
>
>         dp->drm_dev = drm_dev;
> -       exynos_dp_display.ctx = dp;
>
>         platform_set_drvdata(pdev, &exynos_dp_display);
>
> @@ -1334,6 +1344,8 @@ static const struct component_ops exynos_dp_ops = {
>
>  static int exynos_dp_probe(struct platform_device *pdev)
>  {
> +       struct device *dev = &pdev->dev;
> +       struct exynos_dp_device *dp;
>         int ret;
>
>         ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR,
> @@ -1341,6 +1353,21 @@ static int exynos_dp_probe(struct platform_device *pdev)
>         if (ret)
>                 return ret;
>
> +       dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
> +                               GFP_KERNEL);
> +       if (!dp)
> +               return -ENOMEM;
> +
> +       dp->panel_node = of_parse_phandle(dev->of_node, "edp-panel", 0);
> +       if (dp->panel_node) {
> +               dp->edp_panel = of_drm_find_panel(dp->panel_node);
> +               of_node_put(dp->panel_node);
> +               if (!dp->edp_panel)
> +                       return -EPROBE_DEFER;
> +       }
> +
> +       exynos_dp_display.ctx = dp;
> +
>         ret = component_add(&pdev->dev, &exynos_dp_ops);
>         if (ret)
>                 exynos_drm_component_del(&pdev->dev,
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
> index 02cc4f9..3c29e4e 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.h
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.h
> @@ -146,9 +146,11 @@ struct link_train {
>
>  struct exynos_dp_device {
>         struct device           *dev;
> +       struct device_node      *panel_node;
>         struct drm_device       *drm_dev;
>         struct drm_connector    connector;
>         struct drm_encoder      *encoder;
> +       struct drm_panel        *edp_panel;
>         struct clk              *clock;
>         unsigned int            irq;
>         void __iomem            *reg_base;
> --
> 1.7.9.5
>

[PATCH V4 04/10] drm/panel: Add driver for lvds/edp based panels

[Ajay Kumar]

This patch adds a simple driver to handle all the LCD and LED
powerup/down routines needed to support eDP/LVDS panels.

The LCD and LED units are usually powered up via regulators,
and almost on all boards, we will have a BACKLIGHT_EN pin to
enable/ disable the backlight.
Sometimes, we can have LCD_EN switches as well.

The routines in this driver can be used to control
panel power sequence on such boards.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
---
 .../devicetree/bindings/panel/panel-lvds.txt       |   50 ++++
 drivers/gpu/drm/panel/Kconfig                      |   10 +
 drivers/gpu/drm/panel/Makefile                     |    1 +
 drivers/gpu/drm/panel/panel-lvds.c                 |  262 ++++++++++++++++++++
 4 files changed, 323 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
 create mode 100644 drivers/gpu/drm/panel/panel-lvds.c

diff --git a/Documentation/devicetree/bindings/panel/panel-lvds.txt b/Documentation/devicetree/bindings/panel/panel-lvds.txt
new file mode 100644
index 0000000..7cb6084
--- /dev/null
+++ b/Documentation/devicetree/bindings/panel/panel-lvds.txt
@@ -0,0 +1,50 @@
+panel interface for eDP/lvds panels
+
+Required properties:
+  - compatible: "panel-lvds"
+
+Optional properties:
+	-lcd-en-gpio:
+		panel LCD poweron GPIO.
+			Indicates which GPIO needs to be powered up as output
+			to powerup/enable the switch to the LCD panel.
+	-led-en-gpio:
+		panel LED enable GPIO.
+			Indicates which GPIO needs to be powered up as output
+			to enable the backlight.
+	-panel-prepare-delay:
+		delay value in ms required for panel_prepare process
+			Delay in ms needed for the panel LCD unit to
+			powerup completely.
+			ex: delay needed till eDP panel throws HPD.
+			    delay needed so that we cans tart reading edid.
+	-panel-enable-delay:
+		delay value in ms required for panel_enable process
+			Delay in ms needed for the panel backlight/LED unit
+			to powerup, and delay needed between video_enable and
+			backlight_enable.
+	-panel-disable-delay:
+		delay value in ms required for panel_disable process
+			Delay in ms needed for the panel backlight/LED unit
+			powerdown, and delay needed between backlight_disable
+			and video_disable.
+	-panel-unprepare-delay:
+		delay value in ms required for panel_post_disable process
+			Delay in ms needed for the panel LCD unit to
+			to powerdown completely, and the minimum delay needed
+			before powering it on again.
+	-panel-width-mm: physical panel width [mm]
+	-panel-height-mm: physical panel height [mm]
+
+Example:
+
+	panel-lvds {
+		compatible = "panel-lvds";
+		led-en-gpio = <&gpx3 0 1>;
+		panel-prepare-delay = <40>;
+		panel-enable-delay = <20>;
+		panel-disable-delay = <20>;
+		panel-unprepare-delay = <30>;
+		panel-width-mm = <256>;
+		panel-height-mm = <144>;
+	};
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 4ec874d..8fe7ee5 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -30,4 +30,14 @@ config DRM_PANEL_S6E8AA0
 	select DRM_MIPI_DSI
 	select VIDEOMODE_HELPERS
 
+config DRM_PANEL_EDP_LVDS
+	tristate "support for eDP/LVDS panels"
+	depends on OF && DRM_PANEL
+	select VIDEOMODE_HELPERS
+	help
+	  DRM panel driver for direct eDP panels or LVDS connected
+	  via DP bridges, that need at most a regulator for LCD unit,
+	  a regulator for LED unit and/or enable GPIOs for LCD or LED units.
+	  Delay values can also be specified to support powerup and
+	  powerdown process.
 endmenu
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 8b92921..eaafa01 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -1,3 +1,4 @@
 obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
 obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o
 obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o
+obj-$(CONFIG_DRM_PANEL_EDP_LVDS) += panel-lvds.o
diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
new file mode 100644
index 0000000..2124fcb
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-lvds.c
@@ -0,0 +1,262 @@
+/*
+ * panel driver for lvds and eDP panels
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ *
+ * Ajay Kumar <ajaykumar.rs@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/of_gpio.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_panel.h>
+
+struct panel_lvds {
+	struct drm_panel	base;
+	struct regulator	*backlight_fet;
+	struct regulator	*lcd_fet;
+	struct videomode	vm;
+	int			width_mm;
+	int			height_mm;
+	bool			backlight_fet_enabled;
+	bool			lcd_fet_enabled;
+	int			led_en_gpio;
+	int			lcd_en_gpio;
+	int			panel_prepare_delay;
+	int			panel_enable_delay;
+	int			panel_disable_delay;
+	int			panel_unprepare_delay;
+};
+
+static inline struct panel_lvds *to_panel(struct drm_panel *panel)
+{
+	return container_of(panel, struct panel_lvds, base);
+}
+
+static int panel_lvds_prepare(struct drm_panel *panel)
+{
+	struct panel_lvds *lvds_panel = to_panel(panel);
+
+	if (!IS_ERR_OR_NULL(lvds_panel->lcd_fet))
+		if (!lvds_panel->lcd_fet_enabled) {
+			if (regulator_enable(lvds_panel->lcd_fet))
+				DRM_ERROR("failed to enable LCD fet\n");
+			lvds_panel->lcd_fet_enabled = true;
+		}
+
+	if (gpio_is_valid(lvds_panel->lcd_en_gpio))
+		gpio_set_value(lvds_panel->lcd_en_gpio, 1);
+
+	msleep(lvds_panel->panel_prepare_delay);
+
+	return 0;
+}
+
+static int panel_lvds_enable(struct drm_panel *panel)
+{
+	struct panel_lvds *lvds_panel = to_panel(panel);
+
+	if (!IS_ERR_OR_NULL(lvds_panel->backlight_fet))
+		if (!lvds_panel->backlight_fet_enabled) {
+			if (regulator_enable(lvds_panel->backlight_fet))
+				DRM_ERROR("failed to enable LED fet\n");
+			lvds_panel->backlight_fet_enabled = true;
+		}
+
+	msleep(lvds_panel->panel_enable_delay);
+
+	if (gpio_is_valid(lvds_panel->led_en_gpio))
+		gpio_set_value(lvds_panel->led_en_gpio, 1);
+
+	return 0;
+}
+
+static int panel_lvds_disable(struct drm_panel *panel)
+{
+	struct panel_lvds *lvds_panel = to_panel(panel);
+
+	if (gpio_is_valid(lvds_panel->led_en_gpio))
+		gpio_set_value(lvds_panel->led_en_gpio, 0);
+
+	if (!IS_ERR_OR_NULL(lvds_panel->backlight_fet))
+		if (lvds_panel->backlight_fet_enabled) {
+			regulator_disable(lvds_panel->backlight_fet);
+			lvds_panel->backlight_fet_enabled = false;
+		}
+
+	msleep(lvds_panel->panel_disable_delay);
+
+	return 0;
+}
+
+static int panel_lvds_unprepare(struct drm_panel *panel)
+{
+	struct panel_lvds *lvds_panel = to_panel(panel);
+
+	if (gpio_is_valid(lvds_panel->lcd_en_gpio))
+		gpio_set_value(lvds_panel->lcd_en_gpio, 0);
+
+	if (!IS_ERR_OR_NULL(lvds_panel->lcd_fet))
+		if (lvds_panel->lcd_fet_enabled) {
+			regulator_disable(lvds_panel->lcd_fet);
+			lvds_panel->lcd_fet_enabled = false;
+		}
+
+	msleep(lvds_panel->panel_unprepare_delay);
+
+	return 0;
+}
+
+static int panel_lvds_get_modes(struct drm_panel *panel)
+{
+	struct drm_connector *connector = panel->connector;
+	struct panel_lvds *lvds_panel = to_panel(panel);
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_create(connector->dev);
+	if (!mode) {
+		DRM_ERROR("failed to create a new display mode.\n");
+		return 0;
+	}
+
+	drm_display_mode_from_videomode(&lvds_panel->vm, mode);
+	mode->width_mm = lvds_panel->width_mm;
+	mode->height_mm = lvds_panel->height_mm;
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs panel_lvds_funcs = {
+	.unprepare = panel_lvds_unprepare,
+	.disable = panel_lvds_disable,
+	.prepare = panel_lvds_prepare,
+	.enable = panel_lvds_enable,
+	.get_modes = panel_lvds_get_modes,
+};
+
+static int panel_lvds_probe(struct platform_device *pdev)
+{
+	struct panel_lvds *panel;
+	struct device *dev = &pdev->dev;
+	struct device_node *node = dev->of_node;
+	int ret;
+
+	panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
+	if (!panel)
+		return -ENOMEM;
+
+	ret = of_get_videomode(node, &panel->vm, 0);
+	if (ret) {
+		DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
+		return ret;
+	}
+
+	panel->lcd_fet = devm_regulator_get_optional(dev, "lcd_vdd");
+	if (IS_ERR(panel->lcd_fet))
+		return -EPROBE_DEFER;
+
+	panel->backlight_fet = devm_regulator_get_optional(dev, "vcd_led");
+	if (IS_ERR(panel->backlight_fet))
+		return -EPROBE_DEFER;
+
+	panel->lcd_en_gpio = of_get_named_gpio(node, "lcd-en-gpio", 0);
+	panel->led_en_gpio = of_get_named_gpio(node, "led-en-gpio", 0);
+
+	of_property_read_u32(node, "panel-width-mm", &panel->width_mm);
+	of_property_read_u32(node, "panel-height-mm", &panel->height_mm);
+
+	of_property_read_u32(node, "panel-prepare-delay",
+					&panel->panel_prepare_delay);
+	of_property_read_u32(node, "panel-enable-delay",
+					&panel->panel_enable_delay);
+	of_property_read_u32(node, "panel-disable-delay",
+					&panel->panel_disable_delay);
+	of_property_read_u32(node, "panel-unprepare-delay",
+					&panel->panel_unprepare_delay);
+
+	if (gpio_is_valid(panel->lcd_en_gpio)) {
+		ret = devm_gpio_request_one(dev, panel->lcd_en_gpio,
+					GPIOF_OUT_INIT_LOW, "lcd_en_gpio");
+		if (ret) {
+			DRM_ERROR("failed to get lcd-en gpio [%d]\n", ret);
+			return 0;
+		}
+	} else {
+		panel->lcd_en_gpio = -ENODEV;
+	}
+
+	if (gpio_is_valid(panel->led_en_gpio)) {
+		ret = devm_gpio_request_one(dev, panel->led_en_gpio,
+					GPIOF_OUT_INIT_LOW, "led_en_gpio");
+		if (ret) {
+			DRM_ERROR("failed to get led-en gpio [%d]\n", ret);
+			return 0;
+		}
+	} else {
+		panel->led_en_gpio = -ENODEV;
+	}
+
+	drm_panel_init(&panel->base);
+	panel->base.dev = dev;
+	panel->base.funcs = &panel_lvds_funcs;
+
+	ret = drm_panel_add(&panel->base);
+	if (ret < 0)
+		return ret;
+
+	dev_set_drvdata(dev, panel);
+
+	return 0;
+}
+
+static int panel_lvds_remove(struct platform_device *pdev)
+{
+	struct panel_lvds *panel = dev_get_drvdata(&pdev->dev);
+
+	panel_lvds_disable(&panel->base);
+	panel_lvds_unprepare(&panel->base);
+
+	drm_panel_remove(&panel->base);
+
+	return 0;
+}
+
+static const struct of_device_id lvds_panel_dt_match[] = {
+	{ .compatible = "panel-lvds" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, lvds_panel_dt_match);
+
+struct platform_driver lvds_panel_driver = {
+	.driver = {
+		.name = "panel_lvds",
+		.owner = THIS_MODULE,
+		.of_match_table = lvds_panel_dt_match,
+	},
+	.probe = panel_lvds_probe,
+	.remove = panel_lvds_remove,
+};
+module_platform_driver(lvds_panel_driver);
+
+MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");
+MODULE_DESCRIPTION("lvds/eDP panel driver");
+MODULE_LICENSE("GPL v2");
-- 
1.7.9.5

Re: [PATCH V4 04/10] drm/panel: Add driver for lvds/edp based panels

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> This patch adds a simple driver to handle all the LCD and LED
> powerup/down routines needed to support eDP/LVDS panels.
>
> The LCD and LED units are usually powered up via regulators,
> and almost on all boards, we will have a BACKLIGHT_EN pin to
> enable/ disable the backlight.
> Sometimes, we can have LCD_EN switches as well.
>
> The routines in this driver can be used to control
> panel power sequence on such boards.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
> ---
>  .../devicetree/bindings/panel/panel-lvds.txt       |   50 ++++
>  drivers/gpu/drm/panel/Kconfig                      |   10 +
>  drivers/gpu/drm/panel/Makefile                     |    1 +
>  drivers/gpu/drm/panel/panel-lvds.c                 |  262 ++++++++++++++++++++
>  4 files changed, 323 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
>  create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
>
> diff --git a/Documentation/devicetree/bindings/panel/panel-lvds.txt b/Documentation/devicetree/bindings/panel/panel-lvds.txt
> new file mode 100644
> index 0000000..7cb6084
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/panel/panel-lvds.txt
> @@ -0,0 +1,50 @@
> +panel interface for eDP/lvds panels
> +
> +Required properties:
> +  - compatible: "panel-lvds"
> +
> +Optional properties:
> +       -lcd-en-gpio:
> +               panel LCD poweron GPIO.
> +                       Indicates which GPIO needs to be powered up as output
> +                       to powerup/enable the switch to the LCD panel.
> +       -led-en-gpio:
> +               panel LED enable GPIO.
> +                       Indicates which GPIO needs to be powered up as output
> +                       to enable the backlight.
> +       -panel-prepare-delay:
> +               delay value in ms required for panel_prepare process
> +                       Delay in ms needed for the panel LCD unit to
> +                       powerup completely.
> +                       ex: delay needed till eDP panel throws HPD.
> +                           delay needed so that we cans tart reading edid.
> +       -panel-enable-delay:
> +               delay value in ms required for panel_enable process
> +                       Delay in ms needed for the panel backlight/LED unit
> +                       to powerup, and delay needed between video_enable and
> +                       backlight_enable.
> +       -panel-disable-delay:
> +               delay value in ms required for panel_disable process
> +                       Delay in ms needed for the panel backlight/LED unit
> +                       powerdown, and delay needed between backlight_disable
> +                       and video_disable.
> +       -panel-unprepare-delay:
> +               delay value in ms required for panel_post_disable process
> +                       Delay in ms needed for the panel LCD unit to
> +                       to powerdown completely, and the minimum delay needed
> +                       before powering it on again.
> +       -panel-width-mm: physical panel width [mm]
> +       -panel-height-mm: physical panel height [mm]
> +
> +Example:
> +
> +       panel-lvds {
> +               compatible = "panel-lvds";
> +               led-en-gpio = <&gpx3 0 1>;
> +               panel-prepare-delay = <40>;
> +               panel-enable-delay = <20>;
> +               panel-disable-delay = <20>;
> +               panel-unprepare-delay = <30>;
> +               panel-width-mm = <256>;
> +               panel-height-mm = <144>;
> +       };
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 4ec874d..8fe7ee5 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -30,4 +30,14 @@ config DRM_PANEL_S6E8AA0
>         select DRM_MIPI_DSI
>         select VIDEOMODE_HELPERS
>
> +config DRM_PANEL_EDP_LVDS
> +       tristate "support for eDP/LVDS panels"
> +       depends on OF && DRM_PANEL
> +       select VIDEOMODE_HELPERS
> +       help
> +         DRM panel driver for direct eDP panels or LVDS connected
> +         via DP bridges, that need at most a regulator for LCD unit,
> +         a regulator for LED unit and/or enable GPIOs for LCD or LED units.
> +         Delay values can also be specified to support powerup and
> +         powerdown process.
>  endmenu
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index 8b92921..eaafa01 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -1,3 +1,4 @@
>  obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
>  obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o
>  obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o
> +obj-$(CONFIG_DRM_PANEL_EDP_LVDS) += panel-lvds.o
> diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
> new file mode 100644
> index 0000000..2124fcb
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-lvds.c
> @@ -0,0 +1,262 @@
> +/*
> + * panel driver for lvds and eDP panels
> + *
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd
> + *
> + * Ajay Kumar <ajaykumar.rs@samsung.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/gpio.h>
> +#include <linux/module.h>
> +#include <linux/of_gpio.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/regulator/consumer.h>
> +
> +#include <video/of_videomode.h>
> +#include <video/videomode.h>
> +
> +#include <drm/drmP.h>
> +#include <drm/drm_crtc.h>
> +#include <drm/drm_panel.h>
> +
> +struct panel_lvds {
> +       struct drm_panel        base;
> +       struct regulator        *backlight_fet;
> +       struct regulator        *lcd_fet;
> +       struct videomode        vm;
> +       int                     width_mm;
> +       int                     height_mm;
> +       bool                    backlight_fet_enabled;
> +       bool                    lcd_fet_enabled;
> +       int                     led_en_gpio;
> +       int                     lcd_en_gpio;
> +       int                     panel_prepare_delay;
> +       int                     panel_enable_delay;
> +       int                     panel_disable_delay;
> +       int                     panel_unprepare_delay;
> +};
> +
> +static inline struct panel_lvds *to_panel(struct drm_panel *panel)
> +{
> +       return container_of(panel, struct panel_lvds, base);
> +}
> +
> +static int panel_lvds_prepare(struct drm_panel *panel)
> +{
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +
> +       if (!IS_ERR_OR_NULL(lvds_panel->lcd_fet))
> +               if (!lvds_panel->lcd_fet_enabled) {
> +                       if (regulator_enable(lvds_panel->lcd_fet))
> +                               DRM_ERROR("failed to enable LCD fet\n");
> +                       lvds_panel->lcd_fet_enabled = true;
> +               }
> +
> +       if (gpio_is_valid(lvds_panel->lcd_en_gpio))
> +               gpio_set_value(lvds_panel->lcd_en_gpio, 1);
> +
> +       msleep(lvds_panel->panel_prepare_delay);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_enable(struct drm_panel *panel)
> +{
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +
> +       if (!IS_ERR_OR_NULL(lvds_panel->backlight_fet))
> +               if (!lvds_panel->backlight_fet_enabled) {
> +                       if (regulator_enable(lvds_panel->backlight_fet))
> +                               DRM_ERROR("failed to enable LED fet\n");
> +                       lvds_panel->backlight_fet_enabled = true;
> +               }
> +
> +       msleep(lvds_panel->panel_enable_delay);
> +
> +       if (gpio_is_valid(lvds_panel->led_en_gpio))
> +               gpio_set_value(lvds_panel->led_en_gpio, 1);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_disable(struct drm_panel *panel)
> +{
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +
> +       if (gpio_is_valid(lvds_panel->led_en_gpio))
> +               gpio_set_value(lvds_panel->led_en_gpio, 0);
> +
> +       if (!IS_ERR_OR_NULL(lvds_panel->backlight_fet))
> +               if (lvds_panel->backlight_fet_enabled) {
> +                       regulator_disable(lvds_panel->backlight_fet);
> +                       lvds_panel->backlight_fet_enabled = false;
> +               }
> +
> +       msleep(lvds_panel->panel_disable_delay);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_unprepare(struct drm_panel *panel)
> +{
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +
> +       if (gpio_is_valid(lvds_panel->lcd_en_gpio))
> +               gpio_set_value(lvds_panel->lcd_en_gpio, 0);
> +
> +       if (!IS_ERR_OR_NULL(lvds_panel->lcd_fet))
> +               if (lvds_panel->lcd_fet_enabled) {
> +                       regulator_disable(lvds_panel->lcd_fet);
> +                       lvds_panel->lcd_fet_enabled = false;
> +               }
> +
> +       msleep(lvds_panel->panel_unprepare_delay);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_get_modes(struct drm_panel *panel)
> +{
> +       struct drm_connector *connector = panel->connector;
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +       struct drm_display_mode *mode;
> +
> +       mode = drm_mode_create(connector->dev);
> +       if (!mode) {
> +               DRM_ERROR("failed to create a new display mode.\n");
> +               return 0;
> +       }
> +
> +       drm_display_mode_from_videomode(&lvds_panel->vm, mode);
> +       mode->width_mm = lvds_panel->width_mm;
> +       mode->height_mm = lvds_panel->height_mm;
> +       connector->display_info.width_mm = mode->width_mm;
> +       connector->display_info.height_mm = mode->height_mm;
> +
> +       mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> +       drm_mode_set_name(mode);
> +       drm_mode_probed_add(connector, mode);
> +
> +       return 1;
> +}
> +
> +static const struct drm_panel_funcs panel_lvds_funcs = {
> +       .unprepare = panel_lvds_unprepare,
> +       .disable = panel_lvds_disable,
> +       .prepare = panel_lvds_prepare,
> +       .enable = panel_lvds_enable,
> +       .get_modes = panel_lvds_get_modes,
> +};
> +
> +static int panel_lvds_probe(struct platform_device *pdev)
> +{
> +       struct panel_lvds *panel;
> +       struct device *dev = &pdev->dev;
> +       struct device_node *node = dev->of_node;
> +       int ret;
> +
> +       panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
> +       if (!panel)
> +               return -ENOMEM;
> +
> +       ret = of_get_videomode(node, &panel->vm, 0);
> +       if (ret) {
> +               DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
> +               return ret;
> +       }
> +
> +       panel->lcd_fet = devm_regulator_get_optional(dev, "lcd_vdd");
> +       if (IS_ERR(panel->lcd_fet))
> +               return -EPROBE_DEFER;
> +
> +       panel->backlight_fet = devm_regulator_get_optional(dev, "vcd_led");
> +       if (IS_ERR(panel->backlight_fet))
> +               return -EPROBE_DEFER;
> +
> +       panel->lcd_en_gpio = of_get_named_gpio(node, "lcd-en-gpio", 0);
> +       panel->led_en_gpio = of_get_named_gpio(node, "led-en-gpio", 0);
> +
> +       of_property_read_u32(node, "panel-width-mm", &panel->width_mm);
> +       of_property_read_u32(node, "panel-height-mm", &panel->height_mm);
> +
> +       of_property_read_u32(node, "panel-prepare-delay",
> +                                       &panel->panel_prepare_delay);
> +       of_property_read_u32(node, "panel-enable-delay",
> +                                       &panel->panel_enable_delay);
> +       of_property_read_u32(node, "panel-disable-delay",
> +                                       &panel->panel_disable_delay);
> +       of_property_read_u32(node, "panel-unprepare-delay",
> +                                       &panel->panel_unprepare_delay);
> +
> +       if (gpio_is_valid(panel->lcd_en_gpio)) {
> +               ret = devm_gpio_request_one(dev, panel->lcd_en_gpio,
> +                                       GPIOF_OUT_INIT_LOW, "lcd_en_gpio");
> +               if (ret) {
> +                       DRM_ERROR("failed to get lcd-en gpio [%d]\n", ret);
> +                       return 0;
> +               }
> +       } else {
> +               panel->lcd_en_gpio = -ENODEV;
> +       }
> +
> +       if (gpio_is_valid(panel->led_en_gpio)) {
> +               ret = devm_gpio_request_one(dev, panel->led_en_gpio,
> +                                       GPIOF_OUT_INIT_LOW, "led_en_gpio");
> +               if (ret) {
> +                       DRM_ERROR("failed to get led-en gpio [%d]\n", ret);
> +                       return 0;
> +               }
> +       } else {
> +               panel->led_en_gpio = -ENODEV;
> +       }
> +
> +       drm_panel_init(&panel->base);
> +       panel->base.dev = dev;
> +       panel->base.funcs = &panel_lvds_funcs;
> +
> +       ret = drm_panel_add(&panel->base);
> +       if (ret < 0)
> +               return ret;
> +
> +       dev_set_drvdata(dev, panel);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_remove(struct platform_device *pdev)
> +{
> +       struct panel_lvds *panel = dev_get_drvdata(&pdev->dev);
> +
> +       panel_lvds_disable(&panel->base);
> +       panel_lvds_unprepare(&panel->base);
> +
> +       drm_panel_remove(&panel->base);
> +
> +       return 0;
> +}
> +
> +static const struct of_device_id lvds_panel_dt_match[] = {
> +       { .compatible = "panel-lvds" },
> +       {},
> +};
> +MODULE_DEVICE_TABLE(of, lvds_panel_dt_match);
> +
> +struct platform_driver lvds_panel_driver = {
> +       .driver = {
> +               .name = "panel_lvds",
> +               .owner = THIS_MODULE,
> +               .of_match_table = lvds_panel_dt_match,
> +       },
> +       .probe = panel_lvds_probe,
> +       .remove = panel_lvds_remove,
> +};
> +module_platform_driver(lvds_panel_driver);
> +
> +MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");
> +MODULE_DESCRIPTION("lvds/eDP panel driver");
> +MODULE_LICENSE("GPL v2");
> --
> 1.7.9.5
>

Re: [PATCH V4 04/10] drm/panel: Add driver for lvds/edp based panels

[Javier Martinez Canillas]

Hello Ajay,

Not an extensive review since I'm not familiar with the graphics stack
but a few things I noticed are commented below.

On Wed, Jun 11, 2014 at 8:27 PM, Ajay Kumar <ajaykumar.rs-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> wrote:
> This patch adds a simple driver to handle all the LCD and LED
> powerup/down routines needed to support eDP/LVDS panels.
>
> The LCD and LED units are usually powered up via regulators,
> and almost on all boards, we will have a BACKLIGHT_EN pin to
> enable/ disable the backlight.
> Sometimes, we can have LCD_EN switches as well.
>
> The routines in this driver can be used to control
> panel power sequence on such boards.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> Signed-off-by: Rahul Sharma <Rahul.Sharma-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
>  .../devicetree/bindings/panel/panel-lvds.txt       |   50 ++++
>  drivers/gpu/drm/panel/Kconfig                      |   10 +
>  drivers/gpu/drm/panel/Makefile                     |    1 +
>  drivers/gpu/drm/panel/panel-lvds.c                 |  262 ++++++++++++++++++++
>  4 files changed, 323 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
>  create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
>
> diff --git a/Documentation/devicetree/bindings/panel/panel-lvds.txt b/Documentation/devicetree/bindings/panel/panel-lvds.txt
> new file mode 100644
> index 0000000..7cb6084
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/panel/panel-lvds.txt
> @@ -0,0 +1,50 @@
> +panel interface for eDP/lvds panels
> +
> +Required properties:
> +  - compatible: "panel-lvds"
> +
> +Optional properties:
> +       -lcd-en-gpio:
> +               panel LCD poweron GPIO.
> +                       Indicates which GPIO needs to be powered up as output
> +                       to powerup/enable the switch to the LCD panel.
> +       -led-en-gpio:
> +               panel LED enable GPIO.
> +                       Indicates which GPIO needs to be powered up as output
> +                       to enable the backlight.
> +       -panel-prepare-delay:
> +               delay value in ms required for panel_prepare process
> +                       Delay in ms needed for the panel LCD unit to
> +                       powerup completely.
> +                       ex: delay needed till eDP panel throws HPD.
> +                           delay needed so that we cans tart reading edid.
> +       -panel-enable-delay:
> +               delay value in ms required for panel_enable process
> +                       Delay in ms needed for the panel backlight/LED unit
> +                       to powerup, and delay needed between video_enable and
> +                       backlight_enable.
> +       -panel-disable-delay:
> +               delay value in ms required for panel_disable process
> +                       Delay in ms needed for the panel backlight/LED unit
> +                       powerdown, and delay needed between backlight_disable
> +                       and video_disable.
> +       -panel-unprepare-delay:
> +               delay value in ms required for panel_post_disable process
> +                       Delay in ms needed for the panel LCD unit to
> +                       to powerdown completely, and the minimum delay needed
> +                       before powering it on again.
> +       -panel-width-mm: physical panel width [mm]
> +       -panel-height-mm: physical panel height [mm]
> +
> +Example:
> +
> +       panel-lvds {
> +               compatible = "panel-lvds";
> +               led-en-gpio = <&gpx3 0 1>;
> +               panel-prepare-delay = <40>;
> +               panel-enable-delay = <20>;
> +               panel-disable-delay = <20>;
> +               panel-unprepare-delay = <30>;
> +               panel-width-mm = <256>;
> +               panel-height-mm = <144>;
> +       };

Recently it's considered a good practice to have the DT binding
documentation in a separate patch.

> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 4ec874d..8fe7ee5 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -30,4 +30,14 @@ config DRM_PANEL_S6E8AA0
>         select DRM_MIPI_DSI
>         select VIDEOMODE_HELPERS
>
> +config DRM_PANEL_EDP_LVDS
> +       tristate "support for eDP/LVDS panels"
> +       depends on OF && DRM_PANEL
> +       select VIDEOMODE_HELPERS
> +       help
> +         DRM panel driver for direct eDP panels or LVDS connected
> +         via DP bridges, that need at most a regulator for LCD unit,
> +         a regulator for LED unit and/or enable GPIOs for LCD or LED units.
> +         Delay values can also be specified to support powerup and
> +         powerdown process.
>  endmenu
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index 8b92921..eaafa01 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -1,3 +1,4 @@
>  obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
>  obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o
>  obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o
> +obj-$(CONFIG_DRM_PANEL_EDP_LVDS) += panel-lvds.o
> diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
> new file mode 100644
> index 0000000..2124fcb
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-lvds.c
> @@ -0,0 +1,262 @@
> +/*
> + * panel driver for lvds and eDP panels
> + *
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd
> + *
> + * Ajay Kumar <ajaykumar.rs-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/gpio.h>
> +#include <linux/module.h>
> +#include <linux/of_gpio.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <linux/regulator/consumer.h>
> +
> +#include <video/of_videomode.h>
> +#include <video/videomode.h>
> +
> +#include <drm/drmP.h>
> +#include <drm/drm_crtc.h>
> +#include <drm/drm_panel.h>
> +
> +struct panel_lvds {
> +       struct drm_panel        base;
> +       struct regulator        *backlight_fet;
> +       struct regulator        *lcd_fet;
> +       struct videomode        vm;
> +       int                     width_mm;
> +       int                     height_mm;
> +       bool                    backlight_fet_enabled;
> +       bool                    lcd_fet_enabled;
> +       int                     led_en_gpio;
> +       int                     lcd_en_gpio;
> +       int                     panel_prepare_delay;
> +       int                     panel_enable_delay;
> +       int                     panel_disable_delay;
> +       int                     panel_unprepare_delay;
> +};
> +
> +static inline struct panel_lvds *to_panel(struct drm_panel *panel)
> +{
> +       return container_of(panel, struct panel_lvds, base);
> +}
> +
> +static int panel_lvds_prepare(struct drm_panel *panel)
> +{
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +
> +       if (!IS_ERR_OR_NULL(lvds_panel->lcd_fet))
> +               if (!lvds_panel->lcd_fet_enabled) {
> +                       if (regulator_enable(lvds_panel->lcd_fet))
> +                               DRM_ERROR("failed to enable LCD fet\n");
> +                       lvds_panel->lcd_fet_enabled = true;

If this is an expected condition then using DRM_INFO() instead? It
looks like an error to me though so maybe should return an error in
this case?

> +               }
> +
> +       if (gpio_is_valid(lvds_panel->lcd_en_gpio))
> +               gpio_set_value(lvds_panel->lcd_en_gpio, 1);
> +
> +       msleep(lvds_panel->panel_prepare_delay);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_enable(struct drm_panel *panel)
> +{
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +
> +       if (!IS_ERR_OR_NULL(lvds_panel->backlight_fet))
> +               if (!lvds_panel->backlight_fet_enabled) {
> +                       if (regulator_enable(lvds_panel->backlight_fet))
> +                               DRM_ERROR("failed to enable LED fet\n");
> +                       lvds_panel->backlight_fet_enabled = true;

Same here.

> +               }
> +
> +       msleep(lvds_panel->panel_enable_delay);
> +
> +       if (gpio_is_valid(lvds_panel->led_en_gpio))
> +               gpio_set_value(lvds_panel->led_en_gpio, 1);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_disable(struct drm_panel *panel)
> +{
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +
> +       if (gpio_is_valid(lvds_panel->led_en_gpio))
> +               gpio_set_value(lvds_panel->led_en_gpio, 0);
> +
> +       if (!IS_ERR_OR_NULL(lvds_panel->backlight_fet))
> +               if (lvds_panel->backlight_fet_enabled) {
> +                       regulator_disable(lvds_panel->backlight_fet);
> +                       lvds_panel->backlight_fet_enabled = false;
> +               }
> +
> +       msleep(lvds_panel->panel_disable_delay);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_unprepare(struct drm_panel *panel)
> +{
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +
> +       if (gpio_is_valid(lvds_panel->lcd_en_gpio))
> +               gpio_set_value(lvds_panel->lcd_en_gpio, 0);
> +
> +       if (!IS_ERR_OR_NULL(lvds_panel->lcd_fet))
> +               if (lvds_panel->lcd_fet_enabled) {
> +                       regulator_disable(lvds_panel->lcd_fet);
> +                       lvds_panel->lcd_fet_enabled = false;
> +               }
> +
> +       msleep(lvds_panel->panel_unprepare_delay);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_get_modes(struct drm_panel *panel)
> +{
> +       struct drm_connector *connector = panel->connector;
> +       struct panel_lvds *lvds_panel = to_panel(panel);
> +       struct drm_display_mode *mode;
> +
> +       mode = drm_mode_create(connector->dev);
> +       if (!mode) {
> +               DRM_ERROR("failed to create a new display mode.\n");
> +               return 0;
> +       }
> +
> +       drm_display_mode_from_videomode(&lvds_panel->vm, mode);
> +       mode->width_mm = lvds_panel->width_mm;
> +       mode->height_mm = lvds_panel->height_mm;
> +       connector->display_info.width_mm = mode->width_mm;
> +       connector->display_info.height_mm = mode->height_mm;
> +
> +       mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> +       drm_mode_set_name(mode);
> +       drm_mode_probed_add(connector, mode);
> +
> +       return 1;
> +}
> +
> +static const struct drm_panel_funcs panel_lvds_funcs = {
> +       .unprepare = panel_lvds_unprepare,
> +       .disable = panel_lvds_disable,
> +       .prepare = panel_lvds_prepare,
> +       .enable = panel_lvds_enable,
> +       .get_modes = panel_lvds_get_modes,
> +};
> +
> +static int panel_lvds_probe(struct platform_device *pdev)
> +{
> +       struct panel_lvds *panel;
> +       struct device *dev = &pdev->dev;
> +       struct device_node *node = dev->of_node;
> +       int ret;
> +
> +       panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
> +       if (!panel)
> +               return -ENOMEM;
> +
> +       ret = of_get_videomode(node, &panel->vm, 0);
> +       if (ret) {
> +               DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
> +               return ret;
> +       }
> +
> +       panel->lcd_fet = devm_regulator_get_optional(dev, "lcd_vdd");
> +       if (IS_ERR(panel->lcd_fet))
> +               return -EPROBE_DEFER;
> +
> +       panel->backlight_fet = devm_regulator_get_optional(dev, "vcd_led");
> +       if (IS_ERR(panel->backlight_fet))
> +               return -EPROBE_DEFER;
> +
> +       panel->lcd_en_gpio = of_get_named_gpio(node, "lcd-en-gpio", 0);
> +       panel->led_en_gpio = of_get_named_gpio(node, "led-en-gpio", 0);
> +

The old integer-based GPIO API has been deprecated and new drivers
should use the new descriptor-based interface
(Documentation/gpio/consumer.txt) instead if possible.

> +       of_property_read_u32(node, "panel-width-mm", &panel->width_mm);
> +       of_property_read_u32(node, "panel-height-mm", &panel->height_mm);
> +
> +       of_property_read_u32(node, "panel-prepare-delay",
> +                                       &panel->panel_prepare_delay);
> +       of_property_read_u32(node, "panel-enable-delay",
> +                                       &panel->panel_enable_delay);
> +       of_property_read_u32(node, "panel-disable-delay",
> +                                       &panel->panel_disable_delay);
> +       of_property_read_u32(node, "panel-unprepare-delay",
> +                                       &panel->panel_unprepare_delay);
> +
> +       if (gpio_is_valid(panel->lcd_en_gpio)) {
> +               ret = devm_gpio_request_one(dev, panel->lcd_en_gpio,
> +                                       GPIOF_OUT_INIT_LOW, "lcd_en_gpio");
> +               if (ret) {
> +                       DRM_ERROR("failed to get lcd-en gpio [%d]\n", ret);
> +                       return 0;

The probe() function returning 0 means success to the driver core but
here is returning early due an error.

> +               }
> +       } else {
> +               panel->lcd_en_gpio = -ENODEV;
> +       }
> +
> +       if (gpio_is_valid(panel->led_en_gpio)) {
> +               ret = devm_gpio_request_one(dev, panel->led_en_gpio,
> +                                       GPIOF_OUT_INIT_LOW, "led_en_gpio");
> +               if (ret) {
> +                       DRM_ERROR("failed to get led-en gpio [%d]\n", ret);
> +                       return 0;

Same here, it should return an error code instead 0.

> +               }
> +       } else {
> +               panel->led_en_gpio = -ENODEV;
> +       }
> +
> +       drm_panel_init(&panel->base);
> +       panel->base.dev = dev;
> +       panel->base.funcs = &panel_lvds_funcs;
> +
> +       ret = drm_panel_add(&panel->base);
> +       if (ret < 0)
> +               return ret;
> +
> +       dev_set_drvdata(dev, panel);
> +
> +       return 0;
> +}
> +
> +static int panel_lvds_remove(struct platform_device *pdev)
> +{
> +       struct panel_lvds *panel = dev_get_drvdata(&pdev->dev);
> +
> +       panel_lvds_disable(&panel->base);
> +       panel_lvds_unprepare(&panel->base);
> +
> +       drm_panel_remove(&panel->base);
> +
> +       return 0;
> +}
> +
> +static const struct of_device_id lvds_panel_dt_match[] = {
> +       { .compatible = "panel-lvds" },
> +       {},
> +};
> +MODULE_DEVICE_TABLE(of, lvds_panel_dt_match);
> +
> +struct platform_driver lvds_panel_driver = {
> +       .driver = {
> +               .name = "panel_lvds",
> +               .owner = THIS_MODULE,
> +               .of_match_table = lvds_panel_dt_match,
> +       },
> +       .probe = panel_lvds_probe,
> +       .remove = panel_lvds_remove,
> +};
> +module_platform_driver(lvds_panel_driver);
> +
> +MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>");
> +MODULE_DESCRIPTION("lvds/eDP panel driver");
> +MODULE_LICENSE("GPL v2");
> --
> 1.7.9.5
>

Best regards,
Javier
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Re: [PATCH V4 04/10] drm/panel: Add driver for lvds/edp based panels

[Ajay kumar]

Hi Javier,

Thanks for the review.

On Mon, Jun 23, 2014 at 11:30 AM, Javier Martinez Canillas
<javier@dowhile0.org> wrote:
> Hello Ajay,
>
> Not an extensive review since I'm not familiar with the graphics stack
> but a few things I noticed are commented below.
>
> On Wed, Jun 11, 2014 at 8:27 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> This patch adds a simple driver to handle all the LCD and LED
>> powerup/down routines needed to support eDP/LVDS panels.
>>
>> The LCD and LED units are usually powered up via regulators,
>> and almost on all boards, we will have a BACKLIGHT_EN pin to
>> enable/ disable the backlight.
>> Sometimes, we can have LCD_EN switches as well.
>>
>> The routines in this driver can be used to control
>> panel power sequence on such boards.
>>
>> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
>> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
>> ---
>>  .../devicetree/bindings/panel/panel-lvds.txt       |   50 ++++
>>  drivers/gpu/drm/panel/Kconfig                      |   10 +
>>  drivers/gpu/drm/panel/Makefile                     |    1 +
>>  drivers/gpu/drm/panel/panel-lvds.c                 |  262 ++++++++++++++++++++
>>  4 files changed, 323 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
>>  create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
>>
>> diff --git a/Documentation/devicetree/bindings/panel/panel-lvds.txt b/Documentation/devicetree/bindings/panel/panel-lvds.txt
>> new file mode 100644
>> index 0000000..7cb6084
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/panel/panel-lvds.txt
>> @@ -0,0 +1,50 @@
>> +panel interface for eDP/lvds panels
>> +
>> +Required properties:
>> +  - compatible: "panel-lvds"
>> +
>> +Optional properties:
>> +       -lcd-en-gpio:
>> +               panel LCD poweron GPIO.
>> +                       Indicates which GPIO needs to be powered up as output
>> +                       to powerup/enable the switch to the LCD panel.
>> +       -led-en-gpio:
>> +               panel LED enable GPIO.
>> +                       Indicates which GPIO needs to be powered up as output
>> +                       to enable the backlight.
>> +       -panel-prepare-delay:
>> +               delay value in ms required for panel_prepare process
>> +                       Delay in ms needed for the panel LCD unit to
>> +                       powerup completely.
>> +                       ex: delay needed till eDP panel throws HPD.
>> +                           delay needed so that we cans tart reading edid.
>> +       -panel-enable-delay:
>> +               delay value in ms required for panel_enable process
>> +                       Delay in ms needed for the panel backlight/LED unit
>> +                       to powerup, and delay needed between video_enable and
>> +                       backlight_enable.
>> +       -panel-disable-delay:
>> +               delay value in ms required for panel_disable process
>> +                       Delay in ms needed for the panel backlight/LED unit
>> +                       powerdown, and delay needed between backlight_disable
>> +                       and video_disable.
>> +       -panel-unprepare-delay:
>> +               delay value in ms required for panel_post_disable process
>> +                       Delay in ms needed for the panel LCD unit to
>> +                       to powerdown completely, and the minimum delay needed
>> +                       before powering it on again.
>> +       -panel-width-mm: physical panel width [mm]
>> +       -panel-height-mm: physical panel height [mm]
>> +
>> +Example:
>> +
>> +       panel-lvds {
>> +               compatible = "panel-lvds";
>> +               led-en-gpio = <&gpx3 0 1>;
>> +               panel-prepare-delay = <40>;
>> +               panel-enable-delay = <20>;
>> +               panel-disable-delay = <20>;
>> +               panel-unprepare-delay = <30>;
>> +               panel-width-mm = <256>;
>> +               panel-height-mm = <144>;
>> +       };
>
> Recently it's considered a good practice to have the DT binding
> documentation in a separate patch.
Ok, will remember this.

>> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
>> index 4ec874d..8fe7ee5 100644
>> --- a/drivers/gpu/drm/panel/Kconfig
>> +++ b/drivers/gpu/drm/panel/Kconfig
>> @@ -30,4 +30,14 @@ config DRM_PANEL_S6E8AA0
>>         select DRM_MIPI_DSI
>>         select VIDEOMODE_HELPERS
>>
>> +config DRM_PANEL_EDP_LVDS
>> +       tristate "support for eDP/LVDS panels"
>> +       depends on OF && DRM_PANEL
>> +       select VIDEOMODE_HELPERS
>> +       help
>> +         DRM panel driver for direct eDP panels or LVDS connected
>> +         via DP bridges, that need at most a regulator for LCD unit,
>> +         a regulator for LED unit and/or enable GPIOs for LCD or LED units.
>> +         Delay values can also be specified to support powerup and
>> +         powerdown process.
>>  endmenu
>> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
>> index 8b92921..eaafa01 100644
>> --- a/drivers/gpu/drm/panel/Makefile
>> +++ b/drivers/gpu/drm/panel/Makefile
>> @@ -1,3 +1,4 @@
>>  obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
>>  obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o
>>  obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o
>> +obj-$(CONFIG_DRM_PANEL_EDP_LVDS) += panel-lvds.o
>> diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
>> new file mode 100644
>> index 0000000..2124fcb
>> --- /dev/null
>> +++ b/drivers/gpu/drm/panel/panel-lvds.c
>> @@ -0,0 +1,262 @@
>> +/*
>> + * panel driver for lvds and eDP panels
>> + *
>> + * Copyright (c) 2014 Samsung Electronics Co., Ltd
>> + *
>> + * Ajay Kumar <ajaykumar.rs@samsung.com>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License version 2 as
>> + * published by the Free Software Foundation.
>> + */
>> +
>> +#include <linux/gpio.h>
>> +#include <linux/module.h>
>> +#include <linux/of_gpio.h>
>> +#include <linux/of_platform.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/regulator/consumer.h>
>> +
>> +#include <video/of_videomode.h>
>> +#include <video/videomode.h>
>> +
>> +#include <drm/drmP.h>
>> +#include <drm/drm_crtc.h>
>> +#include <drm/drm_panel.h>
>> +
>> +struct panel_lvds {
>> +       struct drm_panel        base;
>> +       struct regulator        *backlight_fet;
>> +       struct regulator        *lcd_fet;
>> +       struct videomode        vm;
>> +       int                     width_mm;
>> +       int                     height_mm;
>> +       bool                    backlight_fet_enabled;
>> +       bool                    lcd_fet_enabled;
>> +       int                     led_en_gpio;
>> +       int                     lcd_en_gpio;
>> +       int                     panel_prepare_delay;
>> +       int                     panel_enable_delay;
>> +       int                     panel_disable_delay;
>> +       int                     panel_unprepare_delay;
>> +};
>> +
>> +static inline struct panel_lvds *to_panel(struct drm_panel *panel)
>> +{
>> +       return container_of(panel, struct panel_lvds, base);
>> +}
>> +
>> +static int panel_lvds_prepare(struct drm_panel *panel)
>> +{
>> +       struct panel_lvds *lvds_panel = to_panel(panel);
>> +
>> +       if (!IS_ERR_OR_NULL(lvds_panel->lcd_fet))
>> +               if (!lvds_panel->lcd_fet_enabled) {
>> +                       if (regulator_enable(lvds_panel->lcd_fet))
>> +                               DRM_ERROR("failed to enable LCD fet\n");
>> +                       lvds_panel->lcd_fet_enabled = true;
>
> If this is an expected condition then using DRM_INFO() instead? It
> looks like an error to me though so maybe should return an error in
> this case?
Right, we should ideally return an error here.

>> +               }
>> +
>> +       if (gpio_is_valid(lvds_panel->lcd_en_gpio))
>> +               gpio_set_value(lvds_panel->lcd_en_gpio, 1);
>> +
>> +       msleep(lvds_panel->panel_prepare_delay);
>> +
>> +       return 0;
>> +}
>> +
>> +static int panel_lvds_enable(struct drm_panel *panel)
>> +{
>> +       struct panel_lvds *lvds_panel = to_panel(panel);
>> +
>> +       if (!IS_ERR_OR_NULL(lvds_panel->backlight_fet))
>> +               if (!lvds_panel->backlight_fet_enabled) {
>> +                       if (regulator_enable(lvds_panel->backlight_fet))
>> +                               DRM_ERROR("failed to enable LED fet\n");
>> +                       lvds_panel->backlight_fet_enabled = true;
>
> Same here.
Ok.

>> +               }
>> +
>> +       msleep(lvds_panel->panel_enable_delay);
>> +
>> +       if (gpio_is_valid(lvds_panel->led_en_gpio))
>> +               gpio_set_value(lvds_panel->led_en_gpio, 1);
>> +
>> +       return 0;
>> +}
>> +
>> +static int panel_lvds_disable(struct drm_panel *panel)
>> +{
>> +       struct panel_lvds *lvds_panel = to_panel(panel);
>> +
>> +       if (gpio_is_valid(lvds_panel->led_en_gpio))
>> +               gpio_set_value(lvds_panel->led_en_gpio, 0);
>> +
>> +       if (!IS_ERR_OR_NULL(lvds_panel->backlight_fet))
>> +               if (lvds_panel->backlight_fet_enabled) {
>> +                       regulator_disable(lvds_panel->backlight_fet);
>> +                       lvds_panel->backlight_fet_enabled = false;
>> +               }
>> +
>> +       msleep(lvds_panel->panel_disable_delay);
>> +
>> +       return 0;
>> +}
>> +
>> +static int panel_lvds_unprepare(struct drm_panel *panel)
>> +{
>> +       struct panel_lvds *lvds_panel = to_panel(panel);
>> +
>> +       if (gpio_is_valid(lvds_panel->lcd_en_gpio))
>> +               gpio_set_value(lvds_panel->lcd_en_gpio, 0);
>> +
>> +       if (!IS_ERR_OR_NULL(lvds_panel->lcd_fet))
>> +               if (lvds_panel->lcd_fet_enabled) {
>> +                       regulator_disable(lvds_panel->lcd_fet);
>> +                       lvds_panel->lcd_fet_enabled = false;
>> +               }
>> +
>> +       msleep(lvds_panel->panel_unprepare_delay);
>> +
>> +       return 0;
>> +}
>> +
>> +static int panel_lvds_get_modes(struct drm_panel *panel)
>> +{
>> +       struct drm_connector *connector = panel->connector;
>> +       struct panel_lvds *lvds_panel = to_panel(panel);
>> +       struct drm_display_mode *mode;
>> +
>> +       mode = drm_mode_create(connector->dev);
>> +       if (!mode) {
>> +               DRM_ERROR("failed to create a new display mode.\n");
>> +               return 0;
>> +       }
>> +
>> +       drm_display_mode_from_videomode(&lvds_panel->vm, mode);
>> +       mode->width_mm = lvds_panel->width_mm;
>> +       mode->height_mm = lvds_panel->height_mm;
>> +       connector->display_info.width_mm = mode->width_mm;
>> +       connector->display_info.height_mm = mode->height_mm;
>> +
>> +       mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
>> +       drm_mode_set_name(mode);
>> +       drm_mode_probed_add(connector, mode);
>> +
>> +       return 1;
>> +}
>> +
>> +static const struct drm_panel_funcs panel_lvds_funcs = {
>> +       .unprepare = panel_lvds_unprepare,
>> +       .disable = panel_lvds_disable,
>> +       .prepare = panel_lvds_prepare,
>> +       .enable = panel_lvds_enable,
>> +       .get_modes = panel_lvds_get_modes,
>> +};
>> +
>> +static int panel_lvds_probe(struct platform_device *pdev)
>> +{
>> +       struct panel_lvds *panel;
>> +       struct device *dev = &pdev->dev;
>> +       struct device_node *node = dev->of_node;
>> +       int ret;
>> +
>> +       panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
>> +       if (!panel)
>> +               return -ENOMEM;
>> +
>> +       ret = of_get_videomode(node, &panel->vm, 0);
>> +       if (ret) {
>> +               DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
>> +               return ret;
>> +       }
>> +
>> +       panel->lcd_fet = devm_regulator_get_optional(dev, "lcd_vdd");
>> +       if (IS_ERR(panel->lcd_fet))
>> +               return -EPROBE_DEFER;
>> +
>> +       panel->backlight_fet = devm_regulator_get_optional(dev, "vcd_led");
>> +       if (IS_ERR(panel->backlight_fet))
>> +               return -EPROBE_DEFER;
>> +
>> +       panel->lcd_en_gpio = of_get_named_gpio(node, "lcd-en-gpio", 0);
>> +       panel->led_en_gpio = of_get_named_gpio(node, "led-en-gpio", 0);
>> +
>
> The old integer-based GPIO API has been deprecated and new drivers
> should use the new descriptor-based interface
> (Documentation/gpio/consumer.txt) instead if possible.
Ok, I just saw other panel drivers using the same.
Will change this.

>> +       of_property_read_u32(node, "panel-width-mm", &panel->width_mm);
>> +       of_property_read_u32(node, "panel-height-mm", &panel->height_mm);
>> +
>> +       of_property_read_u32(node, "panel-prepare-delay",
>> +                                       &panel->panel_prepare_delay);
>> +       of_property_read_u32(node, "panel-enable-delay",
>> +                                       &panel->panel_enable_delay);
>> +       of_property_read_u32(node, "panel-disable-delay",
>> +                                       &panel->panel_disable_delay);
>> +       of_property_read_u32(node, "panel-unprepare-delay",
>> +                                       &panel->panel_unprepare_delay);
>> +
>> +       if (gpio_is_valid(panel->lcd_en_gpio)) {
>> +               ret = devm_gpio_request_one(dev, panel->lcd_en_gpio,
>> +                                       GPIOF_OUT_INIT_LOW, "lcd_en_gpio");
>> +               if (ret) {
>> +                       DRM_ERROR("failed to get lcd-en gpio [%d]\n", ret);
>> +                       return 0;
>
> The probe() function returning 0 means success to the driver core but
> here is returning early due an error.
Right, will fix it.

>> +               }
>> +       } else {
>> +               panel->lcd_en_gpio = -ENODEV;
>> +       }
>> +
>> +       if (gpio_is_valid(panel->led_en_gpio)) {
>> +               ret = devm_gpio_request_one(dev, panel->led_en_gpio,
>> +                                       GPIOF_OUT_INIT_LOW, "led_en_gpio");
>> +               if (ret) {
>> +                       DRM_ERROR("failed to get led-en gpio [%d]\n", ret);
>> +                       return 0;
>
> Same here, it should return an error code instead 0.
Right, will fix it.

>> +               }
>> +       } else {
>> +               panel->led_en_gpio = -ENODEV;
>> +       }
>> +
>> +       drm_panel_init(&panel->base);
>> +       panel->base.dev = dev;
>> +       panel->base.funcs = &panel_lvds_funcs;
>> +
>> +       ret = drm_panel_add(&panel->base);
>> +       if (ret < 0)
>> +               return ret;
>> +
>> +       dev_set_drvdata(dev, panel);
>> +
>> +       return 0;
>> +}
>> +
>> +static int panel_lvds_remove(struct platform_device *pdev)
>> +{
>> +       struct panel_lvds *panel = dev_get_drvdata(&pdev->dev);
>> +
>> +       panel_lvds_disable(&panel->base);
>> +       panel_lvds_unprepare(&panel->base);
>> +
>> +       drm_panel_remove(&panel->base);
>> +
>> +       return 0;
>> +}
>> +
>> +static const struct of_device_id lvds_panel_dt_match[] = {
>> +       { .compatible = "panel-lvds" },
>> +       {},
>> +};
>> +MODULE_DEVICE_TABLE(of, lvds_panel_dt_match);
>> +
>> +struct platform_driver lvds_panel_driver = {
>> +       .driver = {
>> +               .name = "panel_lvds",
>> +               .owner = THIS_MODULE,
>> +               .of_match_table = lvds_panel_dt_match,
>> +       },
>> +       .probe = panel_lvds_probe,
>> +       .remove = panel_lvds_remove,
>> +};
>> +module_platform_driver(lvds_panel_driver);
>> +
>> +MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");
>> +MODULE_DESCRIPTION("lvds/eDP panel driver");
>> +MODULE_LICENSE("GPL v2");
>> --
>> 1.7.9.5
>>
>
> Best regards,
> Javier

Re: [PATCH V4 04/10] drm/panel: Add driver for lvds/edp based panels

[Christian Gmeiner]

Hi


2014-06-11 20:27 GMT+02:00 Ajay Kumar <ajaykumar.rs@samsung.com>:
> This patch adds a simple driver to handle all the LCD and LED
> powerup/down routines needed to support eDP/LVDS panels.
>
> The LCD and LED units are usually powered up via regulators,
> and almost on all boards, we will have a BACKLIGHT_EN pin to
> enable/ disable the backlight.
> Sometimes, we can have LCD_EN switches as well.
>
> The routines in this driver can be used to control
> panel power sequence on such boards.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
> ---
>  .../devicetree/bindings/panel/panel-lvds.txt       |   50 ++++
>  drivers/gpu/drm/panel/Kconfig                      |   10 +
>  drivers/gpu/drm/panel/Makefile                     |    1 +
>  drivers/gpu/drm/panel/panel-lvds.c                 |  262 ++++++++++++++++++++
>  4 files changed, 323 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
>  create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
>
> diff --git a/Documentation/devicetree/bindings/panel/panel-lvds.txt b/Documentation/devicetree/bindings/panel/panel-lvds.txt
> new file mode 100644
> index 0000000..7cb6084
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/panel/panel-lvds.txt
> @@ -0,0 +1,50 @@
> +panel interface for eDP/lvds panels
> +
> +Required properties:
> +  - compatible: "panel-lvds"
> +
> +Optional properties:
> +       -lcd-en-gpio:
> +               panel LCD poweron GPIO.
> +                       Indicates which GPIO needs to be powered up as output
> +                       to powerup/enable the switch to the LCD panel.
> +       -led-en-gpio:
> +               panel LED enable GPIO.
> +                       Indicates which GPIO needs to be powered up as output
> +                       to enable the backlight.
> +       -panel-prepare-delay:
> +               delay value in ms required for panel_prepare process
> +                       Delay in ms needed for the panel LCD unit to
> +                       powerup completely.
> +                       ex: delay needed till eDP panel throws HPD.
> +                           delay needed so that we cans tart reading edid.
> +       -panel-enable-delay:
> +               delay value in ms required for panel_enable process
> +                       Delay in ms needed for the panel backlight/LED unit
> +                       to powerup, and delay needed between video_enable and
> +                       backlight_enable.
> +       -panel-disable-delay:
> +               delay value in ms required for panel_disable process
> +                       Delay in ms needed for the panel backlight/LED unit
> +                       powerdown, and delay needed between backlight_disable
> +                       and video_disable.
> +       -panel-unprepare-delay:
> +               delay value in ms required for panel_post_disable process
> +                       Delay in ms needed for the panel LCD unit to
> +                       to powerdown completely, and the minimum delay needed
> +                       before powering it on again.
> +       -panel-width-mm: physical panel width [mm]
> +       -panel-height-mm: physical panel height [mm]
> +

For what are these two properties are needed?

If I find some time I will give this patch a try as I need something
like this for an imx6d based device.

greets
--
Christian Gmeiner, MSc

https://soundcloud.com/christian-gmeiner

Re: [PATCH V4 04/10] drm/panel: Add driver for lvds/edp based panels

[Ajay kumar]

Hi Gmeiner,

On Mon, Jun 23, 2014 at 12:55 PM, Christian Gmeiner
<christian.gmeiner@gmail.com> wrote:
> Hi
>
>
> 2014-06-11 20:27 GMT+02:00 Ajay Kumar <ajaykumar.rs@samsung.com>:
>> This patch adds a simple driver to handle all the LCD and LED
>> powerup/down routines needed to support eDP/LVDS panels.
>>
>> The LCD and LED units are usually powered up via regulators,
>> and almost on all boards, we will have a BACKLIGHT_EN pin to
>> enable/ disable the backlight.
>> Sometimes, we can have LCD_EN switches as well.
>>
>> The routines in this driver can be used to control
>> panel power sequence on such boards.
>>
>> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
>> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
>> ---
>>  .../devicetree/bindings/panel/panel-lvds.txt       |   50 ++++
>>  drivers/gpu/drm/panel/Kconfig                      |   10 +
>>  drivers/gpu/drm/panel/Makefile                     |    1 +
>>  drivers/gpu/drm/panel/panel-lvds.c                 |  262 ++++++++++++++++++++
>>  4 files changed, 323 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
>>  create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
>>
>> diff --git a/Documentation/devicetree/bindings/panel/panel-lvds.txt b/Documentation/devicetree/bindings/panel/panel-lvds.txt
>> new file mode 100644
>> index 0000000..7cb6084
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/panel/panel-lvds.txt
>> @@ -0,0 +1,50 @@
>> +panel interface for eDP/lvds panels
>> +
>> +Required properties:
>> +  - compatible: "panel-lvds"
>> +
>> +Optional properties:
>> +       -lcd-en-gpio:
>> +               panel LCD poweron GPIO.
>> +                       Indicates which GPIO needs to be powered up as output
>> +                       to powerup/enable the switch to the LCD panel.
>> +       -led-en-gpio:
>> +               panel LED enable GPIO.
>> +                       Indicates which GPIO needs to be powered up as output
>> +                       to enable the backlight.
>> +       -panel-prepare-delay:
>> +               delay value in ms required for panel_prepare process
>> +                       Delay in ms needed for the panel LCD unit to
>> +                       powerup completely.
>> +                       ex: delay needed till eDP panel throws HPD.
>> +                           delay needed so that we cans tart reading edid.
>> +       -panel-enable-delay:
>> +               delay value in ms required for panel_enable process
>> +                       Delay in ms needed for the panel backlight/LED unit
>> +                       to powerup, and delay needed between video_enable and
>> +                       backlight_enable.
>> +       -panel-disable-delay:
>> +               delay value in ms required for panel_disable process
>> +                       Delay in ms needed for the panel backlight/LED unit
>> +                       powerdown, and delay needed between backlight_disable
>> +                       and video_disable.
>> +       -panel-unprepare-delay:
>> +               delay value in ms required for panel_post_disable process
>> +                       Delay in ms needed for the panel LCD unit to
>> +                       to powerdown completely, and the minimum delay needed
>> +                       before powering it on again.
>> +       -panel-width-mm: physical panel width [mm]
>> +       -panel-height-mm: physical panel height [mm]
>> +
>
> For what are these two properties are needed?
Actually, these are needed to caluculate DPI(dots/pixels per inch).
That information will be used by the corresponding userspace to
deliver proper size fonts.
You can refer other panel drivers, even they too are using it!

Regards,
Ajay

> If I find some time I will give this patch a try as I need something
> like this for an imx6d based device.
That would be great, Thanks.

Ajay

[PATCH V4 05/10] drm/bridge: add helper functions to support bridge chain

[Ajay Kumar]

Add helper functions to create bridge chain and to call the
corresponding next_bridge functions.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Suggested-by: Rob Clark <robdclark@gmail.com>
---
 include/drm/drm_crtc.h |   72 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index a7fac56..ba6a0d2 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -640,6 +640,7 @@ struct drm_bridge_funcs {
 struct drm_bridge {
 	struct drm_device *dev;
 	struct list_head head;
+	struct drm_bridge *next_bridge;
 
 	struct drm_mode_object base;
 
@@ -1148,6 +1149,77 @@ drm_property_blob_find(struct drm_device *dev, uint32_t id)
 	return mo ? obj_to_blob(mo) : NULL;
 }
 
+static inline int drm_bridge_add_to_chain(struct drm_bridge *head,
+					  struct drm_bridge *last)
+{
+	struct drm_bridge *temp = head;
+
+	if (head && last) {
+		while (temp->next_bridge)
+			temp = temp->next_bridge;
+
+		temp->next_bridge = last;
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static inline void drm_next_bridge_mode_fixup(struct drm_bridge *bridge,
+					const struct drm_display_mode *mode,
+					struct drm_display_mode *adjusted_mode)
+{
+	if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
+	    bridge->next_bridge->funcs->mode_fixup)
+		bridge->next_bridge->funcs->mode_fixup(bridge->next_bridge,
+							mode, adjusted_mode);
+}
+
+static inline void drm_next_bridge_disable(struct drm_bridge *bridge)
+{
+	if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
+	    bridge->next_bridge->funcs->disable)
+		bridge->next_bridge->funcs->disable(bridge->next_bridge);
+}
+
+static inline void drm_next_bridge_post_disable(struct drm_bridge *bridge)
+{
+	if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
+	    bridge->next_bridge->funcs->post_disable)
+		bridge->next_bridge->funcs->post_disable(bridge->next_bridge);
+}
+
+static inline void drm_next_bridge_mode_set(struct drm_bridge *bridge,
+					struct drm_display_mode *mode,
+					struct drm_display_mode *adjusted_mode)
+{
+	if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
+	    bridge->next_bridge->funcs->mode_set)
+		bridge->next_bridge->funcs->mode_set(bridge->next_bridge,
+							mode, adjusted_mode);
+}
+
+static inline void drm_next_bridge_pre_enable(struct drm_bridge *bridge)
+{
+	if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
+	    bridge->next_bridge->funcs->pre_enable)
+		bridge->next_bridge->funcs->pre_enable(bridge->next_bridge);
+}
+
+static inline void drm_next_bridge_enable(struct drm_bridge *bridge)
+{
+	if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
+	    bridge->next_bridge->funcs->enable)
+		bridge->next_bridge->funcs->enable(bridge->next_bridge);
+}
+
+static inline void drm_next_bridge_destroy(struct drm_bridge *bridge)
+{
+	if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
+	    bridge->next_bridge->funcs->destroy)
+		bridge->next_bridge->funcs->destroy(bridge->next_bridge);
+}
+
 /* Plane list iterator for legacy (overlay only) planes. */
 #define drm_for_each_legacy_plane(plane, planelist) \
 	list_for_each_entry(plane, planelist, head) \
-- 
1.7.9.5

Re: [PATCH V4 05/10] drm/bridge: add helper functions to support bridge chain

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> Add helper functions to create bridge chain and to call the
> corresponding next_bridge functions.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> Suggested-by: Rob Clark <robdclark@gmail.com>
> ---
>  include/drm/drm_crtc.h |   72 ++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 72 insertions(+)
>
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index a7fac56..ba6a0d2 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -640,6 +640,7 @@ struct drm_bridge_funcs {
>  struct drm_bridge {
>         struct drm_device *dev;
>         struct list_head head;
> +       struct drm_bridge *next_bridge;
>
>         struct drm_mode_object base;
>
> @@ -1148,6 +1149,77 @@ drm_property_blob_find(struct drm_device *dev, uint32_t id)
>         return mo ? obj_to_blob(mo) : NULL;
>  }
>
> +static inline int drm_bridge_add_to_chain(struct drm_bridge *head,
> +                                         struct drm_bridge *last)
> +{
> +       struct drm_bridge *temp = head;
> +
> +       if (head && last) {
> +               while (temp->next_bridge)
> +                       temp = temp->next_bridge;
> +
> +               temp->next_bridge = last;
> +               return 0;
> +       }
> +
> +       return -EINVAL;
> +}
> +
> +static inline void drm_next_bridge_mode_fixup(struct drm_bridge *bridge,
> +                                       const struct drm_display_mode *mode,
> +                                       struct drm_display_mode *adjusted_mode)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->mode_fixup)
> +               bridge->next_bridge->funcs->mode_fixup(bridge->next_bridge,
> +                                                       mode, adjusted_mode);
> +}
> +
> +static inline void drm_next_bridge_disable(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->disable)
> +               bridge->next_bridge->funcs->disable(bridge->next_bridge);
> +}
> +
> +static inline void drm_next_bridge_post_disable(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->post_disable)
> +               bridge->next_bridge->funcs->post_disable(bridge->next_bridge);
> +}
> +
> +static inline void drm_next_bridge_mode_set(struct drm_bridge *bridge,
> +                                       struct drm_display_mode *mode,
> +                                       struct drm_display_mode *adjusted_mode)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->mode_set)
> +               bridge->next_bridge->funcs->mode_set(bridge->next_bridge,
> +                                                       mode, adjusted_mode);
> +}
> +
> +static inline void drm_next_bridge_pre_enable(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->pre_enable)
> +               bridge->next_bridge->funcs->pre_enable(bridge->next_bridge);
> +}
> +
> +static inline void drm_next_bridge_enable(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->enable)
> +               bridge->next_bridge->funcs->enable(bridge->next_bridge);
> +}
> +
> +static inline void drm_next_bridge_destroy(struct drm_bridge *bridge)
> +{
> +       if (bridge && bridge->next_bridge && bridge->next_bridge->funcs &&
> +           bridge->next_bridge->funcs->destroy)
> +               bridge->next_bridge->funcs->destroy(bridge->next_bridge);
> +}
> +
>  /* Plane list iterator for legacy (overlay only) planes. */
>  #define drm_for_each_legacy_plane(plane, planelist) \
>         list_for_each_entry(plane, planelist, head) \
> --
> 1.7.9.5
>

[PATCH V4 06/10] drm/bridge: Add a driver which binds drm_bridge with drm_panel

[Ajay Kumar]

Add a dummy bridge which binds all of the drm_bridge callbacks
to corresponding drm_panel callbacks.

In theory, this is just a glue layer for the last bridge and
the panel attached to it.

This driver also implements the required drm_connector ops
for the encoder(on which the entire bridge chain is hanging off).

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 drivers/gpu/drm/bridge/Kconfig        |    7 ++
 drivers/gpu/drm/bridge/Makefile       |    1 +
 drivers/gpu/drm/bridge/panel_binder.c |  193 +++++++++++++++++++++++++++++++++
 include/drm/bridge/panel_binder.h     |   44 ++++++++
 4 files changed, 245 insertions(+)
 create mode 100644 drivers/gpu/drm/bridge/panel_binder.c
 create mode 100644 include/drm/bridge/panel_binder.h

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 884923f..e3fb487 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -3,3 +3,10 @@ config DRM_PTN3460
 	depends on DRM
 	select DRM_KMS_HELPER
 	---help---
+
+config DRM_PANEL_BINDER
+	tristate "bridge panel binder"
+	depends on DRM
+	select DRM_KMS_HELPER
+	select DRM_PANEL
+	---help---
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index b4733e1..ba8b5b8 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -1,3 +1,4 @@
 ccflags-y := -Iinclude/drm
 
 obj-$(CONFIG_DRM_PTN3460) += ptn3460.o
+obj-$(CONFIG_DRM_PANEL_BINDER) += panel_binder.o
diff --git a/drivers/gpu/drm/bridge/panel_binder.c b/drivers/gpu/drm/bridge/panel_binder.c
new file mode 100644
index 0000000..93d976b
--- /dev/null
+++ b/drivers/gpu/drm/bridge/panel_binder.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2014 Samsung Electronics Co., Ltd.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include <drm/drm_panel.h>
+
+#include "drmP.h"
+#include "drm_crtc.h"
+#include "drm_crtc_helper.h"
+
+#include "bridge/panel_binder.h"
+
+struct panel_binder {
+	struct drm_connector	connector;
+	struct i2c_client	*client;
+	struct drm_encoder	*encoder;
+	struct drm_bridge	*bridge;
+	struct drm_panel	*panel;
+};
+
+static void panel_binder_pre_enable(struct drm_bridge *bridge)
+{
+	struct panel_binder *panel_binder = bridge->driver_private;
+
+	drm_panel_prepare(panel_binder->panel);
+}
+
+static void panel_binder_enable(struct drm_bridge *bridge)
+{
+	struct panel_binder *panel_binder = bridge->driver_private;
+
+	drm_panel_enable(panel_binder->panel);
+}
+
+static void panel_binder_disable(struct drm_bridge *bridge)
+{
+	struct panel_binder *panel_binder = bridge->driver_private;
+
+	drm_panel_disable(panel_binder->panel);
+}
+
+static void panel_binder_post_disable(struct drm_bridge *bridge)
+{
+	struct panel_binder *panel_binder = bridge->driver_private;
+
+	drm_panel_unprepare(panel_binder->panel);
+}
+
+void panel_binder_destroy(struct drm_bridge *bridge)
+{
+	struct panel_binder *panel_binder = bridge->driver_private;
+
+	drm_panel_detach(panel_binder->panel);
+	drm_bridge_cleanup(bridge);
+}
+
+struct drm_bridge_funcs panel_binder_funcs = {
+	.pre_enable = panel_binder_pre_enable,
+	.enable = panel_binder_enable,
+	.disable = panel_binder_disable,
+	.post_disable = panel_binder_post_disable,
+	.destroy = panel_binder_destroy,
+};
+
+static int panel_binder_mode_valid(struct drm_connector *connector,
+				 struct drm_display_mode *mode)
+{
+	return MODE_OK;
+}
+
+static int panel_binder_get_modes(struct drm_connector *connector)
+{
+	struct panel_binder *panel_binder;
+
+	panel_binder = container_of(connector, struct panel_binder, connector);
+
+	return panel_binder->panel->funcs->get_modes(panel_binder->panel);
+}
+
+static struct drm_encoder *panel_binder_best_encoder(struct drm_connector
+								*connector)
+{
+	struct panel_binder *panel_binder;
+
+	panel_binder = container_of(connector, struct panel_binder, connector);
+
+	return panel_binder->encoder;
+}
+
+static const struct drm_connector_helper_funcs
+					panel_binder_connector_helper_funcs = {
+	.get_modes = panel_binder_get_modes,
+	.mode_valid = panel_binder_mode_valid,
+	.best_encoder = panel_binder_best_encoder,
+};
+
+static enum drm_connector_status panel_binder_detect(struct drm_connector
+							*connector, bool force)
+{
+	return connector_status_connected;
+}
+
+static void panel_binder_connector_destroy(struct drm_connector *connector)
+{
+	drm_connector_cleanup(connector);
+}
+
+static const struct drm_connector_funcs panel_binder_connector_funcs = {
+	.dpms = drm_helper_connector_dpms,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.detect = panel_binder_detect,
+	.destroy = panel_binder_connector_destroy,
+};
+
+struct drm_bridge *panel_binder_init(struct drm_device *dev,
+					struct drm_encoder *encoder,
+					struct i2c_client *client,
+					struct device_node *node,
+					struct drm_panel *panel,
+					int connector_type,
+					uint8_t polled)
+{
+	int ret;
+	struct drm_bridge *bridge;
+	struct panel_binder *panel_binder;
+
+	if (IS_ERR_OR_NULL(panel)) {
+		DRM_ERROR("invalid drm_panel pointer\n");
+		return NULL;
+	}
+
+	bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
+	if (!bridge) {
+		DRM_ERROR("failed to allocate drm bridge\n");
+		return NULL;
+	}
+
+	panel_binder = devm_kzalloc(dev->dev, sizeof(*panel_binder),
+								GFP_KERNEL);
+	if (!panel_binder) {
+		DRM_ERROR("failed to allocate bridge panel_binder\n");
+		return NULL;
+	}
+
+	panel_binder->client = client;
+	panel_binder->encoder = encoder;
+	panel_binder->bridge = bridge;
+	panel_binder->panel = panel;
+
+	ret = drm_bridge_init(dev, bridge, &panel_binder_funcs);
+	if (ret) {
+		DRM_ERROR("failed to initialize bridge with drm\n");
+		goto err;
+	}
+
+	bridge->driver_private = panel_binder;
+
+	drm_panel_attach(panel_binder->panel, &panel_binder->connector);
+
+	if (!encoder->bridge)
+		/* First entry in the bridge chain */
+		encoder->bridge = bridge;
+
+	panel_binder->connector.polled = polled;
+	ret = drm_connector_init(dev, &panel_binder->connector,
+			&panel_binder_connector_funcs, connector_type);
+	if (ret) {
+		DRM_ERROR("failed to initialize connector with drm\n");
+		goto err;
+	}
+	drm_connector_helper_add(&panel_binder->connector,
+			&panel_binder_connector_helper_funcs);
+	drm_sysfs_connector_add(&panel_binder->connector);
+	drm_mode_connector_attach_encoder(&panel_binder->connector, encoder);
+
+	return bridge;
+
+err:
+	return NULL;
+}
+EXPORT_SYMBOL(panel_binder_init);
diff --git a/include/drm/bridge/panel_binder.h b/include/drm/bridge/panel_binder.h
new file mode 100644
index 0000000..b5ebbc2
--- /dev/null
+++ b/include/drm/bridge/panel_binder.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2014 Samsung Electronics Co., Ltd.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _DRM_BRIDGE_PANEL_H_
+#define _DRM_BRIDGE_PANEL_H_
+
+struct drm_device;
+struct drm_encoder;
+struct i2c_client;
+struct device_node;
+struct drm_panel;
+
+#if defined(CONFIG_DRM_PANEL_BINDER)
+struct drm_bridge *panel_binder_init(struct drm_device *dev,
+					struct drm_encoder *encoder,
+					struct i2c_client *client,
+					struct device_node *node,
+					struct drm_panel *panel,
+					int connector_type,
+					uint8_t polled);
+#else
+static inline struct drm_bridge *panel_binder_init(struct drm_device *dev,
+						struct drm_encoder *encoder,
+						struct i2c_client *client,
+						struct device_node *node,
+						struct drm_panel *panel,
+						int connector_type,
+						uint8_t polled)
+{
+	return 0;
+}
+#endif
+
+#endif
-- 
1.7.9.5

Re: [PATCH V4 06/10] drm/bridge: Add a driver which binds drm_bridge with drm_panel

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> wrote:
> Add a dummy bridge which binds all of the drm_bridge callbacks
> to corresponding drm_panel callbacks.
>
> In theory, this is just a glue layer for the last bridge and
> the panel attached to it.
>
> This driver also implements the required drm_connector ops
> for the encoder(on which the entire bridge chain is hanging off).
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
>  drivers/gpu/drm/bridge/Kconfig        |    7 ++
>  drivers/gpu/drm/bridge/Makefile       |    1 +
>  drivers/gpu/drm/bridge/panel_binder.c |  193 +++++++++++++++++++++++++++++++++
>  include/drm/bridge/panel_binder.h     |   44 ++++++++
>  4 files changed, 245 insertions(+)
>  create mode 100644 drivers/gpu/drm/bridge/panel_binder.c
>  create mode 100644 include/drm/bridge/panel_binder.h
>
> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> index 884923f..e3fb487 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -3,3 +3,10 @@ config DRM_PTN3460
>         depends on DRM
>         select DRM_KMS_HELPER
>         ---help---
> +
> +config DRM_PANEL_BINDER
> +       tristate "bridge panel binder"
> +       depends on DRM
> +       select DRM_KMS_HELPER
> +       select DRM_PANEL
> +       ---help---
> diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
> index b4733e1..ba8b5b8 100644
> --- a/drivers/gpu/drm/bridge/Makefile
> +++ b/drivers/gpu/drm/bridge/Makefile
> @@ -1,3 +1,4 @@
>  ccflags-y := -Iinclude/drm
>
>  obj-$(CONFIG_DRM_PTN3460) += ptn3460.o
> +obj-$(CONFIG_DRM_PANEL_BINDER) += panel_binder.o
> diff --git a/drivers/gpu/drm/bridge/panel_binder.c b/drivers/gpu/drm/bridge/panel_binder.c
> new file mode 100644
> index 0000000..93d976b
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/panel_binder.c
> @@ -0,0 +1,193 @@
> +/*
> + * Copyright (C) 2014 Samsung Electronics Co., Ltd.
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/of.h>
> +
> +#include <drm/drm_panel.h>
> +
> +#include "drmP.h"
> +#include "drm_crtc.h"
> +#include "drm_crtc_helper.h"
> +
> +#include "bridge/panel_binder.h"
> +
> +struct panel_binder {
> +       struct drm_connector    connector;
> +       struct i2c_client       *client;
> +       struct drm_encoder      *encoder;
> +       struct drm_bridge       *bridge;
> +       struct drm_panel        *panel;
> +};
> +
> +static void panel_binder_pre_enable(struct drm_bridge *bridge)
> +{
> +       struct panel_binder *panel_binder = bridge->driver_private;
> +
> +       drm_panel_prepare(panel_binder->panel);
> +}
> +
> +static void panel_binder_enable(struct drm_bridge *bridge)
> +{
> +       struct panel_binder *panel_binder = bridge->driver_private;
> +
> +       drm_panel_enable(panel_binder->panel);
> +}
> +
> +static void panel_binder_disable(struct drm_bridge *bridge)
> +{
> +       struct panel_binder *panel_binder = bridge->driver_private;
> +
> +       drm_panel_disable(panel_binder->panel);
> +}
> +
> +static void panel_binder_post_disable(struct drm_bridge *bridge)
> +{
> +       struct panel_binder *panel_binder = bridge->driver_private;
> +
> +       drm_panel_unprepare(panel_binder->panel);
> +}
> +
> +void panel_binder_destroy(struct drm_bridge *bridge)
> +{
> +       struct panel_binder *panel_binder = bridge->driver_private;
> +
> +       drm_panel_detach(panel_binder->panel);
> +       drm_bridge_cleanup(bridge);
> +}
> +
> +struct drm_bridge_funcs panel_binder_funcs = {
> +       .pre_enable = panel_binder_pre_enable,
> +       .enable = panel_binder_enable,
> +       .disable = panel_binder_disable,
> +       .post_disable = panel_binder_post_disable,
> +       .destroy = panel_binder_destroy,
> +};
> +
> +static int panel_binder_mode_valid(struct drm_connector *connector,
> +                                struct drm_display_mode *mode)
> +{
> +       return MODE_OK;
> +}
> +
> +static int panel_binder_get_modes(struct drm_connector *connector)
> +{
> +       struct panel_binder *panel_binder;
> +
> +       panel_binder = container_of(connector, struct panel_binder, connector);
> +
> +       return panel_binder->panel->funcs->get_modes(panel_binder->panel);
> +}
> +
> +static struct drm_encoder *panel_binder_best_encoder(struct drm_connector
> +                                                               *connector)
> +{
> +       struct panel_binder *panel_binder;
> +
> +       panel_binder = container_of(connector, struct panel_binder, connector);
> +
> +       return panel_binder->encoder;
> +}
> +
> +static const struct drm_connector_helper_funcs
> +                                       panel_binder_connector_helper_funcs = {
> +       .get_modes = panel_binder_get_modes,
> +       .mode_valid = panel_binder_mode_valid,
> +       .best_encoder = panel_binder_best_encoder,
> +};
> +
> +static enum drm_connector_status panel_binder_detect(struct drm_connector
> +                                                       *connector, bool force)
> +{
> +       return connector_status_connected;
> +}
> +
> +static void panel_binder_connector_destroy(struct drm_connector *connector)
> +{
> +       drm_connector_cleanup(connector);
> +}
> +
> +static const struct drm_connector_funcs panel_binder_connector_funcs = {
> +       .dpms = drm_helper_connector_dpms,
> +       .fill_modes = drm_helper_probe_single_connector_modes,
> +       .detect = panel_binder_detect,
> +       .destroy = panel_binder_connector_destroy,
> +};
> +
> +struct drm_bridge *panel_binder_init(struct drm_device *dev,
> +                                       struct drm_encoder *encoder,
> +                                       struct i2c_client *client,
> +                                       struct device_node *node,
> +                                       struct drm_panel *panel,
> +                                       int connector_type,
> +                                       uint8_t polled)
> +{
> +       int ret;
> +       struct drm_bridge *bridge;
> +       struct panel_binder *panel_binder;
> +
> +       if (IS_ERR_OR_NULL(panel)) {
> +               DRM_ERROR("invalid drm_panel pointer\n");
> +               return NULL;
> +       }
> +
> +       bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
> +       if (!bridge) {
> +               DRM_ERROR("failed to allocate drm bridge\n");
> +               return NULL;
> +       }
> +
> +       panel_binder = devm_kzalloc(dev->dev, sizeof(*panel_binder),
> +                                                               GFP_KERNEL);
> +       if (!panel_binder) {
> +               DRM_ERROR("failed to allocate bridge panel_binder\n");
> +               return NULL;
> +       }
> +
> +       panel_binder->client = client;
> +       panel_binder->encoder = encoder;
> +       panel_binder->bridge = bridge;
> +       panel_binder->panel = panel;
> +
> +       ret = drm_bridge_init(dev, bridge, &panel_binder_funcs);
> +       if (ret) {
> +               DRM_ERROR("failed to initialize bridge with drm\n");
> +               goto err;
> +       }
> +
> +       bridge->driver_private = panel_binder;
> +
> +       drm_panel_attach(panel_binder->panel, &panel_binder->connector);
> +
> +       if (!encoder->bridge)
> +               /* First entry in the bridge chain */
> +               encoder->bridge = bridge;
> +
> +       panel_binder->connector.polled = polled;
> +       ret = drm_connector_init(dev, &panel_binder->connector,
> +                       &panel_binder_connector_funcs, connector_type);
> +       if (ret) {
> +               DRM_ERROR("failed to initialize connector with drm\n");
> +               goto err;
> +       }
> +       drm_connector_helper_add(&panel_binder->connector,
> +                       &panel_binder_connector_helper_funcs);
> +       drm_sysfs_connector_add(&panel_binder->connector);
> +       drm_mode_connector_attach_encoder(&panel_binder->connector, encoder);
> +
> +       return bridge;
> +
> +err:
> +       return NULL;
> +}
> +EXPORT_SYMBOL(panel_binder_init);
> diff --git a/include/drm/bridge/panel_binder.h b/include/drm/bridge/panel_binder.h
> new file mode 100644
> index 0000000..b5ebbc2
> --- /dev/null
> +++ b/include/drm/bridge/panel_binder.h
> @@ -0,0 +1,44 @@
> +/*
> + * Copyright (C) 2014 Samsung Electronics Co., Ltd.
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef _DRM_BRIDGE_PANEL_H_
> +#define _DRM_BRIDGE_PANEL_H_
> +
> +struct drm_device;
> +struct drm_encoder;
> +struct i2c_client;
> +struct device_node;
> +struct drm_panel;
> +
> +#if defined(CONFIG_DRM_PANEL_BINDER)
> +struct drm_bridge *panel_binder_init(struct drm_device *dev,
> +                                       struct drm_encoder *encoder,
> +                                       struct i2c_client *client,
> +                                       struct device_node *node,
> +                                       struct drm_panel *panel,
> +                                       int connector_type,
> +                                       uint8_t polled);
> +#else
> +static inline struct drm_bridge *panel_binder_init(struct drm_device *dev,
> +                                               struct drm_encoder *encoder,
> +                                               struct i2c_client *client,
> +                                               struct device_node *node,
> +                                               struct drm_panel *panel,
> +                                               int connector_type,
> +                                               uint8_t polled)
> +{
> +       return 0;
> +}
> +#endif
> +
> +#endif
> --
> 1.7.9.5
>
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[PATCH V4 07/10] drm/bridge: ptn3460: Support bridge chaining

[Ajay Kumar]

Modify the driver to invoke callbacks for the next bridge
in the bridge chain.
Also, remove the drm_connector implementation from ptn3460,
since the same is implemented using panel_binder.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 drivers/gpu/drm/bridge/ptn3460.c        |  136 +++++--------------------------
 drivers/gpu/drm/exynos/exynos_dp_core.c |   16 ++--
 include/drm/bridge/ptn3460.h            |   15 ++--
 3 files changed, 39 insertions(+), 128 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index 98fd17a..21e9db8 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -34,37 +34,15 @@
 #define PTN3460_EDID_SRAM_LOAD_ADDR		0x85
 
 struct ptn3460_bridge {
-	struct drm_connector connector;
 	struct i2c_client *client;
 	struct drm_encoder *encoder;
 	struct drm_bridge *bridge;
-	struct edid *edid;
 	int gpio_pd_n;
 	int gpio_rst_n;
 	u32 edid_emulation;
 	bool enabled;
 };
 
-static int ptn3460_read_bytes(struct ptn3460_bridge *ptn_bridge, char addr,
-		u8 *buf, int len)
-{
-	int ret;
-
-	ret = i2c_master_send(ptn_bridge->client, &addr, 1);
-	if (ret <= 0) {
-		DRM_ERROR("Failed to send i2c command, ret=%d\n", ret);
-		return ret;
-	}
-
-	ret = i2c_master_recv(ptn_bridge->client, buf, len);
-	if (ret <= 0) {
-		DRM_ERROR("Failed to recv i2c data, ret=%d\n", ret);
-		return ret;
-	}
-
-	return 0;
-}
-
 static int ptn3460_write_byte(struct ptn3460_bridge *ptn_bridge, char addr,
 		char val)
 {
@@ -126,6 +104,8 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
 		gpio_set_value(ptn_bridge->gpio_rst_n, 1);
 	}
 
+	drm_next_bridge_pre_enable(bridge);
+
 	/*
 	 * There's a bug in the PTN chip where it falsely asserts hotplug before
 	 * it is fully functional. We're forced to wait for the maximum start up
@@ -142,6 +122,7 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
 
 static void ptn3460_enable(struct drm_bridge *bridge)
 {
+	drm_next_bridge_enable(bridge);
 }
 
 static void ptn3460_disable(struct drm_bridge *bridge)
@@ -153,6 +134,8 @@ static void ptn3460_disable(struct drm_bridge *bridge)
 
 	ptn_bridge->enabled = false;
 
+	drm_next_bridge_disable(bridge);
+
 	if (gpio_is_valid(ptn_bridge->gpio_rst_n))
 		gpio_set_value(ptn_bridge->gpio_rst_n, 1);
 
@@ -162,6 +145,7 @@ static void ptn3460_disable(struct drm_bridge *bridge)
 
 static void ptn3460_post_disable(struct drm_bridge *bridge)
 {
+	drm_next_bridge_post_disable(bridge);
 }
 
 void ptn3460_bridge_destroy(struct drm_bridge *bridge)
@@ -173,6 +157,9 @@ void ptn3460_bridge_destroy(struct drm_bridge *bridge)
 		gpio_free(ptn_bridge->gpio_pd_n);
 	if (gpio_is_valid(ptn_bridge->gpio_rst_n))
 		gpio_free(ptn_bridge->gpio_rst_n);
+
+	drm_next_bridge_destroy(bridge);
+
 	/* Nothing else to free, we've got devm allocated memory */
 }
 
@@ -184,81 +171,10 @@ struct drm_bridge_funcs ptn3460_bridge_funcs = {
 	.destroy = ptn3460_bridge_destroy,
 };
 
-int ptn3460_get_modes(struct drm_connector *connector)
-{
-	struct ptn3460_bridge *ptn_bridge;
-	u8 *edid;
-	int ret, num_modes;
-	bool power_off;
-
-	ptn_bridge = container_of(connector, struct ptn3460_bridge, connector);
-
-	if (ptn_bridge->edid)
-		return drm_add_edid_modes(connector, ptn_bridge->edid);
-
-	power_off = !ptn_bridge->enabled;
-	ptn3460_pre_enable(ptn_bridge->bridge);
-
-	edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
-	if (!edid) {
-		DRM_ERROR("Failed to allocate edid\n");
-		return 0;
-	}
-
-	ret = ptn3460_read_bytes(ptn_bridge, PTN3460_EDID_ADDR, edid,
-			EDID_LENGTH);
-	if (ret) {
-		kfree(edid);
-		num_modes = 0;
-		goto out;
-	}
-
-	ptn_bridge->edid = (struct edid *)edid;
-	drm_mode_connector_update_edid_property(connector, ptn_bridge->edid);
-
-	num_modes = drm_add_edid_modes(connector, ptn_bridge->edid);
-
-out:
-	if (power_off)
-		ptn3460_disable(ptn_bridge->bridge);
-
-	return num_modes;
-}
-
-struct drm_encoder *ptn3460_best_encoder(struct drm_connector *connector)
-{
-	struct ptn3460_bridge *ptn_bridge;
-
-	ptn_bridge = container_of(connector, struct ptn3460_bridge, connector);
-
-	return ptn_bridge->encoder;
-}
-
-struct drm_connector_helper_funcs ptn3460_connector_helper_funcs = {
-	.get_modes = ptn3460_get_modes,
-	.best_encoder = ptn3460_best_encoder,
-};
-
-enum drm_connector_status ptn3460_detect(struct drm_connector *connector,
-		bool force)
-{
-	return connector_status_connected;
-}
-
-void ptn3460_connector_destroy(struct drm_connector *connector)
-{
-	drm_connector_cleanup(connector);
-}
-
-struct drm_connector_funcs ptn3460_connector_funcs = {
-	.dpms = drm_helper_connector_dpms,
-	.fill_modes = drm_helper_probe_single_connector_modes,
-	.detect = ptn3460_detect,
-	.destroy = ptn3460_connector_destroy,
-};
-
-int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
-		struct i2c_client *client, struct device_node *node)
+struct drm_bridge *ptn3460_init(struct drm_device *dev,
+				struct drm_encoder *encoder,
+				struct i2c_client *client,
+				struct device_node *node)
 {
 	int ret;
 	struct drm_bridge *bridge;
@@ -267,13 +183,13 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
 	bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
 	if (!bridge) {
 		DRM_ERROR("Failed to allocate drm bridge\n");
-		return -ENOMEM;
+		return NULL;
 	}
 
 	ptn_bridge = devm_kzalloc(dev->dev, sizeof(*ptn_bridge), GFP_KERNEL);
 	if (!ptn_bridge) {
 		DRM_ERROR("Failed to allocate ptn bridge\n");
-		return -ENOMEM;
+		return NULL;
 	}
 
 	ptn_bridge->client = client;
@@ -285,7 +201,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
 				GPIOF_OUT_INIT_HIGH, "PTN3460_PD_N");
 		if (ret) {
 			DRM_ERROR("Request powerdown-gpio failed (%d)\n", ret);
-			return ret;
+			return NULL;
 		}
 	}
 
@@ -300,7 +216,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
 		if (ret) {
 			DRM_ERROR("Request reset-gpio failed (%d)\n", ret);
 			gpio_free(ptn_bridge->gpio_pd_n);
-			return ret;
+			return NULL;
 		}
 	}
 
@@ -318,26 +234,18 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
 	}
 
 	bridge->driver_private = ptn_bridge;
-	encoder->bridge = bridge;
 
-	ret = drm_connector_init(dev, &ptn_bridge->connector,
-			&ptn3460_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
-	if (ret) {
-		DRM_ERROR("Failed to initialize connector with drm\n");
-		goto err;
-	}
-	drm_connector_helper_add(&ptn_bridge->connector,
-			&ptn3460_connector_helper_funcs);
-	drm_sysfs_connector_add(&ptn_bridge->connector);
-	drm_mode_connector_attach_encoder(&ptn_bridge->connector, encoder);
+	if (!encoder->bridge)
+		/* First entry in the bridge chain */
+		encoder->bridge = bridge;
 
-	return 0;
+	return bridge;
 
 err:
 	if (gpio_is_valid(ptn_bridge->gpio_pd_n))
 		gpio_free(ptn_bridge->gpio_pd_n);
 	if (gpio_is_valid(ptn_bridge->gpio_rst_n))
 		gpio_free(ptn_bridge->gpio_rst_n);
-	return ret;
+	return NULL;
 }
 EXPORT_SYMBOL(ptn3460_init);
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index aca739d..d8546ea 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -988,19 +988,19 @@ static bool find_bridge(const char *compat, struct bridge_init *bridge)
 	return true;
 }
 
-/* returns the number of bridges attached */
-static int exynos_drm_attach_lcd_bridge(struct drm_device *dev,
+static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
 		struct drm_encoder *encoder)
 {
 	struct bridge_init bridge;
-	int ret;
+	struct drm_bridge *bridge_chain = NULL;
+	bool connector_created = false;
 
 	if (find_bridge("nxp,ptn3460", &bridge)) {
-		ret = ptn3460_init(dev, encoder, bridge.client, bridge.node);
-		if (!ret)
-			return 1;
+		bridge_chain = ptn3460_init(dp->drm_dev, encoder, bridge.client,
+								bridge.node);
 	}
-	return 0;
+
+	return connector_created;
 }
 
 static int exynos_dp_create_connector(struct exynos_drm_display *display,
@@ -1013,7 +1013,7 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display,
 	dp->encoder = encoder;
 
 	/* Pre-empt DP connector creation if there's a bridge */
-	ret = exynos_drm_attach_lcd_bridge(dp->drm_dev, encoder);
+	ret = exynos_drm_attach_lcd_bridge(dp, encoder);
 	if (ret)
 		return 0;
 
diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h
index ff62344..f612b9b 100644
--- a/include/drm/bridge/ptn3460.h
+++ b/include/drm/bridge/ptn3460.h
@@ -21,15 +21,18 @@ struct device_node;
 
 #if defined(CONFIG_DRM_PTN3460) || defined(CONFIG_DRM_PTN3460_MODULE)
 
-int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
-		struct i2c_client *client, struct device_node *node);
+struct drm_bridge *ptn3460_init(struct drm_device *dev,
+				struct drm_encoder *encoder,
+				struct i2c_client *client,
+				struct device_node *node);
 #else
 
-static inline int ptn3460_init(struct drm_device *dev,
-		struct drm_encoder *encoder, struct i2c_client *client,
-		struct device_node *node)
+static inline struct drm_bridge *ptn3460_init(struct drm_device *dev,
+						struct drm_encoder *encoder,
+						struct i2c_client *client,
+						struct device_node *node)
 {
-	return 0;
+	return NULL;
 }
 
 #endif
-- 
1.7.9.5

Re: [PATCH V4 07/10] drm/bridge: ptn3460: Support bridge chaining

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> Modify the driver to invoke callbacks for the next bridge
> in the bridge chain.
> Also, remove the drm_connector implementation from ptn3460,
> since the same is implemented using panel_binder.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
>  drivers/gpu/drm/bridge/ptn3460.c        |  136 +++++--------------------------
>  drivers/gpu/drm/exynos/exynos_dp_core.c |   16 ++--
>  include/drm/bridge/ptn3460.h            |   15 ++--
>  3 files changed, 39 insertions(+), 128 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
> index 98fd17a..21e9db8 100644
> --- a/drivers/gpu/drm/bridge/ptn3460.c
> +++ b/drivers/gpu/drm/bridge/ptn3460.c
> @@ -34,37 +34,15 @@
>  #define PTN3460_EDID_SRAM_LOAD_ADDR            0x85
>
>  struct ptn3460_bridge {
> -       struct drm_connector connector;
>         struct i2c_client *client;
>         struct drm_encoder *encoder;
>         struct drm_bridge *bridge;
> -       struct edid *edid;
>         int gpio_pd_n;
>         int gpio_rst_n;
>         u32 edid_emulation;
>         bool enabled;
>  };
>
> -static int ptn3460_read_bytes(struct ptn3460_bridge *ptn_bridge, char addr,
> -               u8 *buf, int len)
> -{
> -       int ret;
> -
> -       ret = i2c_master_send(ptn_bridge->client, &addr, 1);
> -       if (ret <= 0) {
> -               DRM_ERROR("Failed to send i2c command, ret=%d\n", ret);
> -               return ret;
> -       }
> -
> -       ret = i2c_master_recv(ptn_bridge->client, buf, len);
> -       if (ret <= 0) {
> -               DRM_ERROR("Failed to recv i2c data, ret=%d\n", ret);
> -               return ret;
> -       }
> -
> -       return 0;
> -}
> -
>  static int ptn3460_write_byte(struct ptn3460_bridge *ptn_bridge, char addr,
>                 char val)
>  {
> @@ -126,6 +104,8 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
>                 gpio_set_value(ptn_bridge->gpio_rst_n, 1);
>         }
>
> +       drm_next_bridge_pre_enable(bridge);
> +
>         /*
>          * There's a bug in the PTN chip where it falsely asserts hotplug before
>          * it is fully functional. We're forced to wait for the maximum start up
> @@ -142,6 +122,7 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
>
>  static void ptn3460_enable(struct drm_bridge *bridge)
>  {
> +       drm_next_bridge_enable(bridge);
>  }
>
>  static void ptn3460_disable(struct drm_bridge *bridge)
> @@ -153,6 +134,8 @@ static void ptn3460_disable(struct drm_bridge *bridge)
>
>         ptn_bridge->enabled = false;
>
> +       drm_next_bridge_disable(bridge);
> +
>         if (gpio_is_valid(ptn_bridge->gpio_rst_n))
>                 gpio_set_value(ptn_bridge->gpio_rst_n, 1);
>
> @@ -162,6 +145,7 @@ static void ptn3460_disable(struct drm_bridge *bridge)
>
>  static void ptn3460_post_disable(struct drm_bridge *bridge)
>  {
> +       drm_next_bridge_post_disable(bridge);
>  }
>
>  void ptn3460_bridge_destroy(struct drm_bridge *bridge)
> @@ -173,6 +157,9 @@ void ptn3460_bridge_destroy(struct drm_bridge *bridge)
>                 gpio_free(ptn_bridge->gpio_pd_n);
>         if (gpio_is_valid(ptn_bridge->gpio_rst_n))
>                 gpio_free(ptn_bridge->gpio_rst_n);
> +
> +       drm_next_bridge_destroy(bridge);
> +
>         /* Nothing else to free, we've got devm allocated memory */
>  }
>
> @@ -184,81 +171,10 @@ struct drm_bridge_funcs ptn3460_bridge_funcs = {
>         .destroy = ptn3460_bridge_destroy,
>  };
>
> -int ptn3460_get_modes(struct drm_connector *connector)
> -{
> -       struct ptn3460_bridge *ptn_bridge;
> -       u8 *edid;
> -       int ret, num_modes;
> -       bool power_off;
> -
> -       ptn_bridge = container_of(connector, struct ptn3460_bridge, connector);
> -
> -       if (ptn_bridge->edid)
> -               return drm_add_edid_modes(connector, ptn_bridge->edid);
> -
> -       power_off = !ptn_bridge->enabled;
> -       ptn3460_pre_enable(ptn_bridge->bridge);
> -
> -       edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
> -       if (!edid) {
> -               DRM_ERROR("Failed to allocate edid\n");
> -               return 0;
> -       }
> -
> -       ret = ptn3460_read_bytes(ptn_bridge, PTN3460_EDID_ADDR, edid,
> -                       EDID_LENGTH);
> -       if (ret) {
> -               kfree(edid);
> -               num_modes = 0;
> -               goto out;
> -       }
> -
> -       ptn_bridge->edid = (struct edid *)edid;
> -       drm_mode_connector_update_edid_property(connector, ptn_bridge->edid);
> -
> -       num_modes = drm_add_edid_modes(connector, ptn_bridge->edid);
> -
> -out:
> -       if (power_off)
> -               ptn3460_disable(ptn_bridge->bridge);
> -
> -       return num_modes;
> -}
> -
> -struct drm_encoder *ptn3460_best_encoder(struct drm_connector *connector)
> -{
> -       struct ptn3460_bridge *ptn_bridge;
> -
> -       ptn_bridge = container_of(connector, struct ptn3460_bridge, connector);
> -
> -       return ptn_bridge->encoder;
> -}
> -
> -struct drm_connector_helper_funcs ptn3460_connector_helper_funcs = {
> -       .get_modes = ptn3460_get_modes,
> -       .best_encoder = ptn3460_best_encoder,
> -};
> -
> -enum drm_connector_status ptn3460_detect(struct drm_connector *connector,
> -               bool force)
> -{
> -       return connector_status_connected;
> -}
> -
> -void ptn3460_connector_destroy(struct drm_connector *connector)
> -{
> -       drm_connector_cleanup(connector);
> -}
> -
> -struct drm_connector_funcs ptn3460_connector_funcs = {
> -       .dpms = drm_helper_connector_dpms,
> -       .fill_modes = drm_helper_probe_single_connector_modes,
> -       .detect = ptn3460_detect,
> -       .destroy = ptn3460_connector_destroy,
> -};
> -
> -int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
> -               struct i2c_client *client, struct device_node *node)
> +struct drm_bridge *ptn3460_init(struct drm_device *dev,
> +                               struct drm_encoder *encoder,
> +                               struct i2c_client *client,
> +                               struct device_node *node)
>  {
>         int ret;
>         struct drm_bridge *bridge;
> @@ -267,13 +183,13 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
>         bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
>         if (!bridge) {
>                 DRM_ERROR("Failed to allocate drm bridge\n");
> -               return -ENOMEM;
> +               return NULL;
>         }
>
>         ptn_bridge = devm_kzalloc(dev->dev, sizeof(*ptn_bridge), GFP_KERNEL);
>         if (!ptn_bridge) {
>                 DRM_ERROR("Failed to allocate ptn bridge\n");
> -               return -ENOMEM;
> +               return NULL;
>         }
>
>         ptn_bridge->client = client;
> @@ -285,7 +201,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
>                                 GPIOF_OUT_INIT_HIGH, "PTN3460_PD_N");
>                 if (ret) {
>                         DRM_ERROR("Request powerdown-gpio failed (%d)\n", ret);
> -                       return ret;
> +                       return NULL;
>                 }
>         }
>
> @@ -300,7 +216,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
>                 if (ret) {
>                         DRM_ERROR("Request reset-gpio failed (%d)\n", ret);
>                         gpio_free(ptn_bridge->gpio_pd_n);
> -                       return ret;
> +                       return NULL;
>                 }
>         }
>
> @@ -318,26 +234,18 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
>         }
>
>         bridge->driver_private = ptn_bridge;
> -       encoder->bridge = bridge;
>
> -       ret = drm_connector_init(dev, &ptn_bridge->connector,
> -                       &ptn3460_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
> -       if (ret) {
> -               DRM_ERROR("Failed to initialize connector with drm\n");
> -               goto err;
> -       }
> -       drm_connector_helper_add(&ptn_bridge->connector,
> -                       &ptn3460_connector_helper_funcs);
> -       drm_sysfs_connector_add(&ptn_bridge->connector);
> -       drm_mode_connector_attach_encoder(&ptn_bridge->connector, encoder);
> +       if (!encoder->bridge)
> +               /* First entry in the bridge chain */
> +               encoder->bridge = bridge;
>
> -       return 0;
> +       return bridge;
>
>  err:
>         if (gpio_is_valid(ptn_bridge->gpio_pd_n))
>                 gpio_free(ptn_bridge->gpio_pd_n);
>         if (gpio_is_valid(ptn_bridge->gpio_rst_n))
>                 gpio_free(ptn_bridge->gpio_rst_n);
> -       return ret;
> +       return NULL;
>  }
>  EXPORT_SYMBOL(ptn3460_init);
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
> index aca739d..d8546ea 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
> @@ -988,19 +988,19 @@ static bool find_bridge(const char *compat, struct bridge_init *bridge)
>         return true;
>  }
>
> -/* returns the number of bridges attached */
> -static int exynos_drm_attach_lcd_bridge(struct drm_device *dev,
> +static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
>                 struct drm_encoder *encoder)
>  {
>         struct bridge_init bridge;
> -       int ret;
> +       struct drm_bridge *bridge_chain = NULL;
> +       bool connector_created = false;
>
>         if (find_bridge("nxp,ptn3460", &bridge)) {
> -               ret = ptn3460_init(dev, encoder, bridge.client, bridge.node);
> -               if (!ret)
> -                       return 1;
> +               bridge_chain = ptn3460_init(dp->drm_dev, encoder, bridge.client,
> +                                                               bridge.node);
>         }
> -       return 0;
> +
> +       return connector_created;
>  }
>
>  static int exynos_dp_create_connector(struct exynos_drm_display *display,
> @@ -1013,7 +1013,7 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display,
>         dp->encoder = encoder;
>
>         /* Pre-empt DP connector creation if there's a bridge */
> -       ret = exynos_drm_attach_lcd_bridge(dp->drm_dev, encoder);
> +       ret = exynos_drm_attach_lcd_bridge(dp, encoder);
>         if (ret)
>                 return 0;
>
> diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h
> index ff62344..f612b9b 100644
> --- a/include/drm/bridge/ptn3460.h
> +++ b/include/drm/bridge/ptn3460.h
> @@ -21,15 +21,18 @@ struct device_node;
>
>  #if defined(CONFIG_DRM_PTN3460) || defined(CONFIG_DRM_PTN3460_MODULE)
>
> -int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
> -               struct i2c_client *client, struct device_node *node);
> +struct drm_bridge *ptn3460_init(struct drm_device *dev,
> +                               struct drm_encoder *encoder,
> +                               struct i2c_client *client,
> +                               struct device_node *node);
>  #else
>
> -static inline int ptn3460_init(struct drm_device *dev,
> -               struct drm_encoder *encoder, struct i2c_client *client,
> -               struct device_node *node)
> +static inline struct drm_bridge *ptn3460_init(struct drm_device *dev,
> +                                               struct drm_encoder *encoder,
> +                                               struct i2c_client *client,
> +                                               struct device_node *node)
>  {
> -       return 0;
> +       return NULL;
>  }
>
>  #endif
> --
> 1.7.9.5
>

[PATCH V4 08/10] drm/exynos: dp: create bridge chain using ptn3460 and panel_binder

[Ajay Kumar]

exynos_dp supports a simple bridge chain with ptn3460 bridge
and an LVDS panel attached to it.
This patch creates the bridge chain with ptn3460 as the head
of the list and panel_binder being the tail.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_dp_core.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index d8546ea..69535f7 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -30,6 +30,7 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_panel.h>
 #include <drm/bridge/ptn3460.h>
+#include <drm/bridge/panel_binder.h>
 
 #include "exynos_drm_drv.h"
 #include "exynos_dp_core.h"
@@ -992,7 +993,7 @@ static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
 		struct drm_encoder *encoder)
 {
 	struct bridge_init bridge;
-	struct drm_bridge *bridge_chain = NULL;
+	struct drm_bridge *bridge_chain = NULL, *next = NULL;
 	bool connector_created = false;
 
 	if (find_bridge("nxp,ptn3460", &bridge)) {
@@ -1000,6 +1001,15 @@ static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
 								bridge.node);
 	}
 
+	if (bridge_chain && dp->edp_panel) {
+		next = panel_binder_init(dp->drm_dev, encoder, bridge.client,
+			bridge.node, dp->edp_panel, DRM_MODE_CONNECTOR_LVDS,
+			DRM_CONNECTOR_POLL_HPD);
+		if (next)
+			connector_created = true;
+		drm_bridge_add_to_chain(bridge_chain, next);
+	}
+
 	return connector_created;
 }
 
-- 
1.7.9.5

Re: [PATCH V4 08/10] drm/exynos: dp: create bridge chain using ptn3460 and panel_binder

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> exynos_dp supports a simple bridge chain with ptn3460 bridge
> and an LVDS panel attached to it.
> This patch creates the bridge chain with ptn3460 as the head
> of the list and panel_binder being the tail.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos_dp_core.c |   12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
> index d8546ea..69535f7 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
> @@ -30,6 +30,7 @@
>  #include <drm/drm_crtc_helper.h>
>  #include <drm/drm_panel.h>
>  #include <drm/bridge/ptn3460.h>
> +#include <drm/bridge/panel_binder.h>
>
>  #include "exynos_drm_drv.h"
>  #include "exynos_dp_core.h"
> @@ -992,7 +993,7 @@ static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
>                 struct drm_encoder *encoder)
>  {
>         struct bridge_init bridge;
> -       struct drm_bridge *bridge_chain = NULL;
> +       struct drm_bridge *bridge_chain = NULL, *next = NULL;
>         bool connector_created = false;
>
>         if (find_bridge("nxp,ptn3460", &bridge)) {
> @@ -1000,6 +1001,15 @@ static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
>                                                                 bridge.node);
>         }
>
> +       if (bridge_chain && dp->edp_panel) {
> +               next = panel_binder_init(dp->drm_dev, encoder, bridge.client,
> +                       bridge.node, dp->edp_panel, DRM_MODE_CONNECTOR_LVDS,
> +                       DRM_CONNECTOR_POLL_HPD);
> +               if (next)
> +                       connector_created = true;
> +               drm_bridge_add_to_chain(bridge_chain, next);
> +       }
> +
>         return connector_created;
>  }
>
> --
> 1.7.9.5
>

[PATCH V4 09/10] drm/bridge: Add ps8622/ps8625 bridge driver

[Ajay Kumar]

From: Vincent Palatin <vpalatin@chromium.org>

This patch adds drm_bridge driver for parade DisplayPort
to LVDS bridge chip.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 .../devicetree/bindings/drm/bridge/ps8622.txt      |   21 +
 drivers/gpu/drm/bridge/Kconfig                     |    8 +
 drivers/gpu/drm/bridge/Makefile                    |    1 +
 drivers/gpu/drm/bridge/ps8622.c                    |  475 ++++++++++++++++++++
 include/drm/bridge/ps8622.h                        |   41 ++
 5 files changed, 546 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/drm/bridge/ps8622.txt
 create mode 100644 drivers/gpu/drm/bridge/ps8622.c
 create mode 100644 include/drm/bridge/ps8622.h

diff --git a/Documentation/devicetree/bindings/drm/bridge/ps8622.txt b/Documentation/devicetree/bindings/drm/bridge/ps8622.txt
new file mode 100644
index 0000000..1afbd9c
--- /dev/null
+++ b/Documentation/devicetree/bindings/drm/bridge/ps8622.txt
@@ -0,0 +1,21 @@
+ps8622-bridge bindings
+
+Required properties:
+	- compatible: "parade,ps8622"
+	- reg: first i2c address of the bridge
+	- sleep-gpio: OF device-tree gpio specification
+	- reset-gpio: OF device-tree gpio specification
+
+Optional properties:
+	- lane-count: number of DP lanes to use
+	- use-external-pwm: backlight will be controlled by an external PWM
+
+Example:
+	ps8622-bridge@48 {
+		compatible = "parade,ps8622";
+		reg = <0x48>;
+		sleep-gpio = <&gpc3 6 1 0 0>;
+		reset-gpio = <&gpc3 1 1 0 0>;
+		display-timings = <&lcd_display_timings>;
+		lane-count = <1>
+	};
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index e3fb487..7b843c8 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -10,3 +10,11 @@ config DRM_PANEL_BINDER
 	select DRM_KMS_HELPER
 	select DRM_PANEL
 	---help---
+
+config DRM_PS8622
+	tristate "Parade eDP/LVDS bridge"
+	depends on DRM
+	select DRM_KMS_HELPER
+	select BACKLIGHT_LCD_SUPPORT
+	select BACKLIGHT_CLASS_DEVICE
+	---help---
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index ba8b5b8..b494d4b 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -2,3 +2,4 @@ ccflags-y := -Iinclude/drm
 
 obj-$(CONFIG_DRM_PTN3460) += ptn3460.o
 obj-$(CONFIG_DRM_PANEL_BINDER) += panel_binder.o
+obj-$(CONFIG_DRM_PS8622) += ps8622.o
diff --git a/drivers/gpu/drm/bridge/ps8622.c b/drivers/gpu/drm/bridge/ps8622.c
new file mode 100644
index 0000000..387d332
--- /dev/null
+++ b/drivers/gpu/drm/bridge/ps8622.c
@@ -0,0 +1,475 @@
+/*
+ * Parade PS8622 eDP/LVDS bridge driver
+ *
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/pm.h>
+#include <linux/regulator/consumer.h>
+
+#include "drmP.h"
+#include "drm_crtc.h"
+#include "drm_crtc_helper.h"
+
+struct ps8622_bridge {
+	struct drm_bridge *bridge;
+	struct drm_encoder *encoder;
+	struct i2c_client *client;
+	struct regulator *v12;
+	struct backlight_device *bl;
+	struct mutex enable_mutex;
+
+	int gpio_slp_n;
+	int gpio_rst_n;
+
+	u8 max_lane_count;
+	u8 lane_count;
+
+	bool enabled;
+};
+
+struct ps8622_device_data {
+	u8 max_lane_count;
+};
+
+static const struct ps8622_device_data ps8622_data = {
+	.max_lane_count = 1,
+};
+
+static const struct ps8622_device_data ps8625_data = {
+	.max_lane_count = 2,
+};
+
+/* Brightness scale on the Parade chip */
+#define PS8622_MAX_BRIGHTNESS 0xff
+
+/* Timings taken from the version 1.7 datasheet for the PS8622/PS8625 */
+#define PS8622_POWER_RISE_T1_MIN_US 10
+#define PS8622_POWER_RISE_T1_MAX_US 10000
+#define PS8622_RST_HIGH_T2_MIN_US 3000
+#define PS8622_RST_HIGH_T2_MAX_US 30000
+#define PS8622_PWMO_END_T12_MS 200
+#define PS8622_POWER_FALL_T16_MAX_US 10000
+#define PS8622_POWER_OFF_T17_MS 500
+
+#if ((PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US) > \
+	(PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US))
+#error "T2.min + T1.max must be less than T2.max + T1.min"
+#endif
+
+static int ps8622_set(struct i2c_client *client, u8 page, u8 reg, u8 val)
+{
+	int ret;
+	struct i2c_adapter *adap = client->adapter;
+	struct i2c_msg msg;
+	u8 data[] = {reg, val};
+
+	msg.addr = client->addr + page;
+	msg.flags = 0;
+	msg.len = sizeof(data);
+	msg.buf = data;
+
+	ret = i2c_transfer(adap, &msg, 1);
+	if (ret != 1)
+		pr_warn("PS8622 I2C write (0x%02x,0x%02x,0x%02x) failed: %d\n",
+			client->addr + page, reg, val, ret);
+	return !(ret == 1);
+}
+
+static int ps8622_send_config(struct ps8622_bridge *ps_bridge)
+{
+	struct i2c_client *cl = ps_bridge->client;
+	int err = 0;
+
+	/* wait 20ms after power ON */
+	usleep_range(20000, 30000);
+
+	err |= ps8622_set(cl, 0x02, 0xa1, 0x01); /* HPD low */
+	/* SW setting */
+	err |= ps8622_set(cl, 0x04, 0x14, 0x01); /* [1:0] SW output 1.2V voltage
+						  * is lower to 96% */
+	/* RCO SS setting */
+	err |= ps8622_set(cl, 0x04, 0xe3, 0x20); /* [5:4] = b01 0.5%, b10 1%,
+						  * b11 1.5% */
+	err |= ps8622_set(cl, 0x04, 0xe2, 0x80); /* [7] RCO SS enable */
+	/* RPHY Setting */
+	err |= ps8622_set(cl, 0x04, 0x8a, 0x0c); /* [3:2] CDR tune wait cycle
+						  * before measure for fine tune
+						  * b00: 1us b01: 0.5us b10:2us
+						  * b11: 4us */
+	err |= ps8622_set(cl, 0x04, 0x89, 0x08); /* [3] RFD always on */
+	err |= ps8622_set(cl, 0x04, 0x71, 0x2d); /* CTN lock in/out:
+						  * 20000ppm/80000ppm.
+						  * Lock out 2 times. */
+	/* 2.7G CDR settings */
+	err |= ps8622_set(cl, 0x04, 0x7d, 0x07); /* NOF=40LSB for HBR CDR
+						  * setting */
+	err |= ps8622_set(cl, 0x04, 0x7b, 0x00); /* [1:0] Fmin=+4bands */
+	err |= ps8622_set(cl, 0x04, 0x7a, 0xfd); /* [7:5] DCO_FTRNG=+-40% */
+	/* 1.62G CDR settings */
+	err |= ps8622_set(cl, 0x04, 0xc0, 0x12); /* [5:2]NOF=64LSB [1:0]DCO
+						  * scale is 2/5 */
+	err |= ps8622_set(cl, 0x04, 0xc1, 0x92); /* Gitune=-37% */
+	err |= ps8622_set(cl, 0x04, 0xc2, 0x1c); /* Fbstep=100% */
+	err |= ps8622_set(cl, 0x04, 0x32, 0x80); /* [7] LOS signal disable */
+	/* RPIO Setting */
+	err |= ps8622_set(cl, 0x04, 0x00, 0xb0); /* [7:4] LVDS driver bias
+						  * current : 75% (250mV swing)
+						  * */
+	err |= ps8622_set(cl, 0x04, 0x15, 0x40); /* [7:6] Right-bar GPIO output
+						  * strength is 8mA */
+	/* EQ Training State Machine Setting */
+	err |= ps8622_set(cl, 0x04, 0x54, 0x10); /* RCO calibration start */
+	/* Logic, needs more than 10 I2C command */
+	err |= ps8622_set(cl, 0x01, 0x02, 0x80 | ps_bridge->max_lane_count);
+						 /* [4:0] MAX_LANE_COUNT set to
+						  * max supported lanes */
+	err |= ps8622_set(cl, 0x01, 0x21, 0x80 | ps_bridge->lane_count);
+						 /* [4:0] LANE_COUNT_SET set to
+						  * chosen lane count */
+	err |= ps8622_set(cl, 0x00, 0x52, 0x20);
+	err |= ps8622_set(cl, 0x00, 0xf1, 0x03); /* HPD CP toggle enable */
+	err |= ps8622_set(cl, 0x00, 0x62, 0x41);
+	err |= ps8622_set(cl, 0x00, 0xf6, 0x01); /* Counter number, add 1ms
+						  * counter delay */
+	err |= ps8622_set(cl, 0x00, 0x77, 0x06); /* [6]PWM function control by
+						  * DPCD0040f[7], default is PWM
+						  * block always works. */
+	err |= ps8622_set(cl, 0x00, 0x4c, 0x04); /* 04h Adjust VTotal tolerance
+						  * to fix the 30Hz no display
+						  * issue */
+	err |= ps8622_set(cl, 0x01, 0xc0, 0x00); /* DPCD00400='h00, Parade OUI =
+						  * 'h001cf8 */
+	err |= ps8622_set(cl, 0x01, 0xc1, 0x1c); /* DPCD00401='h1c */
+	err |= ps8622_set(cl, 0x01, 0xc2, 0xf8); /* DPCD00402='hf8 */
+	err |= ps8622_set(cl, 0x01, 0xc3, 0x44); /* DPCD403~408 = ASCII code
+						  * D2SLV5='h4432534c5635 */
+	err |= ps8622_set(cl, 0x01, 0xc4, 0x32); /* DPCD404 */
+	err |= ps8622_set(cl, 0x01, 0xc5, 0x53); /* DPCD405 */
+	err |= ps8622_set(cl, 0x01, 0xc6, 0x4c); /* DPCD406 */
+	err |= ps8622_set(cl, 0x01, 0xc7, 0x56); /* DPCD407 */
+	err |= ps8622_set(cl, 0x01, 0xc8, 0x35); /* DPCD408 */
+	err |= ps8622_set(cl, 0x01, 0xca, 0x01); /* DPCD40A, Initial Code major
+						  * revision '01' */
+	err |= ps8622_set(cl, 0x01, 0xcb, 0x05); /* DPCD40B, Initial Code minor
+						  * revision '05' */
+	if (ps_bridge->bl) {
+		err |= ps8622_set(cl, 0x01, 0xa5, 0xa0);
+						/* DPCD720, internal PWM */
+		err |= ps8622_set(cl, 0x01, 0xa7,
+				ps_bridge->bl->props.brightness);
+						 /* FFh for 100% brightness,
+						  *  0h for 0% brightness */
+	} else {
+		err |= ps8622_set(cl, 0x01, 0xa5, 0x80);
+						/* DPCD720, external PWM */
+	}
+	err |= ps8622_set(cl, 0x01, 0xcc, 0x13); /* Set LVDS output as 6bit-VESA
+						  * mapping, single LVDS channel
+						  * */
+	err |= ps8622_set(cl, 0x02, 0xb1, 0x20); /* Enable SSC set by register
+						  * */
+	err |= ps8622_set(cl, 0x04, 0x10, 0x16); /* Set SSC enabled and +/-1%
+						  * central spreading */
+	/* Logic end */
+	err |= ps8622_set(cl, 0x04, 0x59, 0x60); /* MPU Clock source: LC => RCO
+						  * */
+	err |= ps8622_set(cl, 0x04, 0x54, 0x14); /* LC -> RCO */
+	err |= ps8622_set(cl, 0x02, 0xa1, 0x91); /* HPD high */
+
+	return err ? -EIO : 0;
+}
+
+static int ps8622_backlight_update(struct backlight_device *bl)
+{
+	struct ps8622_bridge *ps_bridge = dev_get_drvdata(&bl->dev);
+	int ret, brightness = bl->props.brightness;
+
+	if (bl->props.power != FB_BLANK_UNBLANK ||
+	    bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
+		brightness = 0;
+
+	mutex_lock(&ps_bridge->enable_mutex);
+
+	if (!ps_bridge->enabled) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	ret = ps8622_set(ps_bridge->client, 0x01, 0xa7, brightness);
+
+out:
+	mutex_unlock(&ps_bridge->enable_mutex);
+	return ret;
+}
+
+static int ps8622_backlight_get(struct backlight_device *bl)
+{
+	return bl->props.brightness;
+}
+
+static const struct backlight_ops ps8622_backlight_ops = {
+	.update_status	= ps8622_backlight_update,
+	.get_brightness	= ps8622_backlight_get,
+};
+
+static void ps8622_pre_enable(struct drm_bridge *bridge)
+{
+	struct ps8622_bridge *ps_bridge = bridge->driver_private;
+	int ret;
+
+	mutex_lock(&ps_bridge->enable_mutex);
+	if (ps_bridge->enabled)
+		goto out;
+
+	if (gpio_is_valid(ps_bridge->gpio_rst_n))
+		gpio_set_value(ps_bridge->gpio_rst_n, 0);
+
+	if (ps_bridge->v12) {
+		ret = regulator_enable(ps_bridge->v12);
+		if (ret)
+			DRM_ERROR("fails to enable ps_bridge->v12");
+	}
+
+	drm_next_bridge_pre_enable(bridge);
+
+	if (gpio_is_valid(ps_bridge->gpio_slp_n))
+		gpio_set_value(ps_bridge->gpio_slp_n, 1);
+
+	/*
+	 * T1 is the range of time that it takes for the power to rise after we
+	 * enable the lcd fet. T2 is the range of time in which the data sheet
+	 * specifies we should deassert the reset pin.
+	 *
+	 * If it takes T1.max for the power to rise, we need to wait atleast
+	 * T2.min before deasserting the reset pin. If it takes T1.min for the
+	 * power to rise, we need to wait at most T2.max before deasserting the
+	 * reset pin.
+	 */
+	usleep_range(PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US,
+		     PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US);
+
+	if (gpio_is_valid(ps_bridge->gpio_rst_n))
+		gpio_set_value(ps_bridge->gpio_rst_n, 1);
+
+	ret = ps8622_send_config(ps_bridge);
+	if (ret)
+		DRM_ERROR("Failed to send config to bridge (%d)\n", ret);
+
+	ps_bridge->enabled = true;
+
+out:
+	mutex_unlock(&ps_bridge->enable_mutex);
+}
+
+static void ps8622_enable(struct drm_bridge *bridge)
+{
+	struct ps8622_bridge *ps_bridge = bridge->driver_private;
+
+	mutex_lock(&ps_bridge->enable_mutex);
+	drm_next_bridge_enable(bridge);
+	mutex_unlock(&ps_bridge->enable_mutex);
+}
+
+static void ps8622_disable(struct drm_bridge *bridge)
+{
+	struct ps8622_bridge *ps_bridge = bridge->driver_private;
+
+	mutex_lock(&ps_bridge->enable_mutex);
+
+	if (!ps_bridge->enabled)
+		goto out;
+
+	ps_bridge->enabled = false;
+
+	drm_next_bridge_disable(bridge);
+	msleep(PS8622_PWMO_END_T12_MS);
+
+	/*
+	 * This doesn't matter if the regulators are turned off, but something
+	 * else might keep them on. In that case, we want to assert the slp gpio
+	 * to lower power.
+	 */
+	if (gpio_is_valid(ps_bridge->gpio_slp_n))
+		gpio_set_value(ps_bridge->gpio_slp_n, 0);
+
+	if (ps_bridge->v12)
+		regulator_disable(ps_bridge->v12);
+
+	/*
+	 * Sleep for at least the amount of time that it takes the power rail to
+	 * fall to prevent asserting the rst gpio from doing anything.
+	 */
+	usleep_range(PS8622_POWER_FALL_T16_MAX_US,
+		     2 * PS8622_POWER_FALL_T16_MAX_US);
+	if (gpio_is_valid(ps_bridge->gpio_rst_n))
+		gpio_set_value(ps_bridge->gpio_rst_n, 0);
+
+	msleep(PS8622_POWER_OFF_T17_MS);
+
+out:
+	mutex_unlock(&ps_bridge->enable_mutex);
+}
+
+static void ps8622_post_disable(struct drm_bridge *bridge)
+{
+	drm_next_bridge_post_disable(bridge);
+}
+
+static void ps8622_destroy(struct drm_bridge *bridge)
+{
+	struct ps8622_bridge *ps_bridge = bridge->driver_private;
+
+	drm_bridge_cleanup(bridge);
+	if (ps_bridge->bl)
+		backlight_device_unregister(ps_bridge->bl);
+
+	put_device(&ps_bridge->client->dev);
+}
+
+static const struct drm_bridge_funcs ps8622_bridge_funcs = {
+	.pre_enable = ps8622_pre_enable,
+	.enable = ps8622_enable,
+	.disable = ps8622_disable,
+	.post_disable = ps8622_post_disable,
+	.destroy = ps8622_destroy,
+};
+
+static const struct of_device_id ps8622_devices[] = {
+	{
+		.compatible = "parade,ps8622",
+		.data	= &ps8622_data,
+	}, {
+		.compatible = "parade,ps8625",
+		.data	= &ps8625_data,
+	}, {
+		/* end node */
+	}
+};
+
+struct drm_bridge *ps8622_init(struct drm_device *dev,
+				struct drm_encoder *encoder,
+				struct i2c_client *client,
+				struct device_node *node)
+{
+	int ret;
+	const struct of_device_id *match;
+	const struct ps8622_device_data *device_data;
+	struct drm_bridge *bridge;
+	struct ps8622_bridge *ps_bridge;
+
+	node = of_find_matching_node_and_match(NULL, ps8622_devices, &match);
+	if (!node)
+		return NULL;
+
+	bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
+	if (!bridge) {
+		DRM_ERROR("Failed to allocate drm bridge\n");
+		return NULL;
+	}
+
+	ps_bridge = devm_kzalloc(dev->dev, sizeof(*ps_bridge), GFP_KERNEL);
+	if (!ps_bridge) {
+		DRM_ERROR("could not allocate ps bridge\n");
+		return NULL;
+	}
+
+	mutex_init(&ps_bridge->enable_mutex);
+
+	device_data = match->data;
+	ps_bridge->client = client;
+	ps_bridge->encoder = encoder;
+	ps_bridge->bridge = bridge;
+	ps_bridge->v12 = devm_regulator_get(&client->dev, "vdd_bridge");
+	if (IS_ERR(ps_bridge->v12)) {
+		DRM_INFO("no 1.2v regulator found for PS8622\n");
+		ps_bridge->v12 = NULL;
+	}
+
+	ps_bridge->gpio_slp_n = of_get_named_gpio(node, "sleep-gpio", 0);
+	if (gpio_is_valid(ps_bridge->gpio_slp_n)) {
+		ret = devm_gpio_request_one(&client->dev, ps_bridge->gpio_slp_n,
+					    GPIOF_OUT_INIT_HIGH,
+					    "PS8622_SLP_N");
+		if (ret)
+			goto err_client;
+	}
+
+	ps_bridge->gpio_rst_n = of_get_named_gpio(node, "reset-gpio", 0);
+	if (gpio_is_valid(ps_bridge->gpio_rst_n)) {
+		/*
+		 * Assert the reset pin high to avoid the bridge being
+		 * initialized prematurely
+		 */
+		ret = devm_gpio_request_one(&client->dev, ps_bridge->gpio_rst_n,
+					    GPIOF_OUT_INIT_HIGH,
+					    "PS8622_RST_N");
+		if (ret)
+			goto err_client;
+	}
+
+	ps_bridge->max_lane_count = device_data->max_lane_count;
+
+	if (of_property_read_u8(node, "lane-count", &ps_bridge->lane_count))
+		ps_bridge->lane_count = ps_bridge->max_lane_count;
+	else if (ps_bridge->lane_count > ps_bridge->max_lane_count) {
+		DRM_ERROR("lane-count property is too high for DP bridge\n");
+		ps_bridge->lane_count = ps_bridge->max_lane_count;
+	}
+
+	if (!of_find_property(node, "use-external-pwm", NULL)) {
+		ps_bridge->bl = backlight_device_register("ps8622-backlight",
+				dev->dev, ps_bridge, &ps8622_backlight_ops,
+				NULL);
+		if (IS_ERR(ps_bridge->bl)) {
+			DRM_ERROR("failed to register backlight\n");
+			ret = PTR_ERR(ps_bridge->bl);
+			ps_bridge->bl = NULL;
+			goto err_client;
+		}
+		ps_bridge->bl->props.max_brightness = PS8622_MAX_BRIGHTNESS;
+		ps_bridge->bl->props.brightness = PS8622_MAX_BRIGHTNESS;
+	}
+
+	ret = drm_bridge_init(dev, ps_bridge->bridge, &ps8622_bridge_funcs);
+	if (ret) {
+		DRM_ERROR("Failed to initialize bridge with drm\n");
+		goto err_backlight;
+	}
+
+	ps_bridge->bridge->driver_private = ps_bridge;
+	ps_bridge->enabled = false;
+
+	if (!encoder->bridge)
+		/* First entry in the bridge chain */
+		encoder->bridge = bridge;
+
+	return bridge;
+
+err_backlight:
+	if (ps_bridge->bl)
+		backlight_device_unregister(ps_bridge->bl);
+err_client:
+	put_device(&client->dev);
+	DRM_ERROR("device probe failed : %d\n", ret);
+	return NULL;
+}
+EXPORT_SYMBOL(ps8622_init);
diff --git a/include/drm/bridge/ps8622.h b/include/drm/bridge/ps8622.h
new file mode 100644
index 0000000..22f37b6
--- /dev/null
+++ b/include/drm/bridge/ps8622.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _DRM_BRIDGE_PS8622_H_
+#define _DRM_BRIDGE_PS8622_H_
+
+struct drm_device;
+struct drm_encoder;
+struct i2c_client;
+struct device_node;
+
+#ifdef CONFIG_DRM_PS8622
+
+struct drm_bridge *ps8622_init(struct drm_device *dev,
+				struct drm_encoder *encoder,
+				struct i2c_client *client,
+				struct device_node *node);
+
+#else
+
+static inline struct drm_bridge *ps8622_init(struct drm_device *dev,
+				struct drm_encoder *encoder,
+				struct i2c_client *client,
+				struct device_node *node)
+{
+	return -ENODEV;
+}
+
+#endif
+
+#endif
-- 
1.7.9.5

Re: [PATCH V4 09/10] drm/bridge: Add ps8622/ps8625 bridge driver

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> From: Vincent Palatin <vpalatin@chromium.org>
>
> This patch adds drm_bridge driver for parade DisplayPort
> to LVDS bridge chip.
>
> Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
> Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
> Signed-off-by: Sean Paul <seanpaul@chromium.org>
> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
>  .../devicetree/bindings/drm/bridge/ps8622.txt      |   21 +
>  drivers/gpu/drm/bridge/Kconfig                     |    8 +
>  drivers/gpu/drm/bridge/Makefile                    |    1 +
>  drivers/gpu/drm/bridge/ps8622.c                    |  475 ++++++++++++++++++++
>  include/drm/bridge/ps8622.h                        |   41 ++
>  5 files changed, 546 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/drm/bridge/ps8622.txt
>  create mode 100644 drivers/gpu/drm/bridge/ps8622.c
>  create mode 100644 include/drm/bridge/ps8622.h
>
> diff --git a/Documentation/devicetree/bindings/drm/bridge/ps8622.txt b/Documentation/devicetree/bindings/drm/bridge/ps8622.txt
> new file mode 100644
> index 0000000..1afbd9c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/drm/bridge/ps8622.txt
> @@ -0,0 +1,21 @@
> +ps8622-bridge bindings
> +
> +Required properties:
> +       - compatible: "parade,ps8622"
> +       - reg: first i2c address of the bridge
> +       - sleep-gpio: OF device-tree gpio specification
> +       - reset-gpio: OF device-tree gpio specification
> +
> +Optional properties:
> +       - lane-count: number of DP lanes to use
> +       - use-external-pwm: backlight will be controlled by an external PWM
> +
> +Example:
> +       ps8622-bridge@48 {
> +               compatible = "parade,ps8622";
> +               reg = <0x48>;
> +               sleep-gpio = <&gpc3 6 1 0 0>;
> +               reset-gpio = <&gpc3 1 1 0 0>;
> +               display-timings = <&lcd_display_timings>;
> +               lane-count = <1>
> +       };
> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> index e3fb487..7b843c8 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -10,3 +10,11 @@ config DRM_PANEL_BINDER
>         select DRM_KMS_HELPER
>         select DRM_PANEL
>         ---help---
> +
> +config DRM_PS8622
> +       tristate "Parade eDP/LVDS bridge"
> +       depends on DRM
> +       select DRM_KMS_HELPER
> +       select BACKLIGHT_LCD_SUPPORT
> +       select BACKLIGHT_CLASS_DEVICE
> +       ---help---
> diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
> index ba8b5b8..b494d4b 100644
> --- a/drivers/gpu/drm/bridge/Makefile
> +++ b/drivers/gpu/drm/bridge/Makefile
> @@ -2,3 +2,4 @@ ccflags-y := -Iinclude/drm
>
>  obj-$(CONFIG_DRM_PTN3460) += ptn3460.o
>  obj-$(CONFIG_DRM_PANEL_BINDER) += panel_binder.o
> +obj-$(CONFIG_DRM_PS8622) += ps8622.o
> diff --git a/drivers/gpu/drm/bridge/ps8622.c b/drivers/gpu/drm/bridge/ps8622.c
> new file mode 100644
> index 0000000..387d332
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/ps8622.c
> @@ -0,0 +1,475 @@
> +/*
> + * Parade PS8622 eDP/LVDS bridge driver
> + *
> + * Copyright (C) 2014 Google, Inc.
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/backlight.h>
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/fb.h>
> +#include <linux/gpio.h>
> +#include <linux/i2c.h>
> +#include <linux/of.h>
> +#include <linux/of_gpio.h>
> +#include <linux/pm.h>
> +#include <linux/regulator/consumer.h>
> +
> +#include "drmP.h"
> +#include "drm_crtc.h"
> +#include "drm_crtc_helper.h"
> +
> +struct ps8622_bridge {
> +       struct drm_bridge *bridge;
> +       struct drm_encoder *encoder;
> +       struct i2c_client *client;
> +       struct regulator *v12;
> +       struct backlight_device *bl;
> +       struct mutex enable_mutex;
> +
> +       int gpio_slp_n;
> +       int gpio_rst_n;
> +
> +       u8 max_lane_count;
> +       u8 lane_count;
> +
> +       bool enabled;
> +};
> +
> +struct ps8622_device_data {
> +       u8 max_lane_count;
> +};
> +
> +static const struct ps8622_device_data ps8622_data = {
> +       .max_lane_count = 1,
> +};
> +
> +static const struct ps8622_device_data ps8625_data = {
> +       .max_lane_count = 2,
> +};
> +
> +/* Brightness scale on the Parade chip */
> +#define PS8622_MAX_BRIGHTNESS 0xff
> +
> +/* Timings taken from the version 1.7 datasheet for the PS8622/PS8625 */
> +#define PS8622_POWER_RISE_T1_MIN_US 10
> +#define PS8622_POWER_RISE_T1_MAX_US 10000
> +#define PS8622_RST_HIGH_T2_MIN_US 3000
> +#define PS8622_RST_HIGH_T2_MAX_US 30000
> +#define PS8622_PWMO_END_T12_MS 200
> +#define PS8622_POWER_FALL_T16_MAX_US 10000
> +#define PS8622_POWER_OFF_T17_MS 500
> +
> +#if ((PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US) > \
> +       (PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US))
> +#error "T2.min + T1.max must be less than T2.max + T1.min"
> +#endif
> +
> +static int ps8622_set(struct i2c_client *client, u8 page, u8 reg, u8 val)
> +{
> +       int ret;
> +       struct i2c_adapter *adap = client->adapter;
> +       struct i2c_msg msg;
> +       u8 data[] = {reg, val};
> +
> +       msg.addr = client->addr + page;
> +       msg.flags = 0;
> +       msg.len = sizeof(data);
> +       msg.buf = data;
> +
> +       ret = i2c_transfer(adap, &msg, 1);
> +       if (ret != 1)
> +               pr_warn("PS8622 I2C write (0x%02x,0x%02x,0x%02x) failed: %d\n",
> +                       client->addr + page, reg, val, ret);
> +       return !(ret == 1);
> +}
> +
> +static int ps8622_send_config(struct ps8622_bridge *ps_bridge)
> +{
> +       struct i2c_client *cl = ps_bridge->client;
> +       int err = 0;
> +
> +       /* wait 20ms after power ON */
> +       usleep_range(20000, 30000);
> +
> +       err |= ps8622_set(cl, 0x02, 0xa1, 0x01); /* HPD low */
> +       /* SW setting */
> +       err |= ps8622_set(cl, 0x04, 0x14, 0x01); /* [1:0] SW output 1.2V voltage
> +                                                 * is lower to 96% */
> +       /* RCO SS setting */
> +       err |= ps8622_set(cl, 0x04, 0xe3, 0x20); /* [5:4] = b01 0.5%, b10 1%,
> +                                                 * b11 1.5% */
> +       err |= ps8622_set(cl, 0x04, 0xe2, 0x80); /* [7] RCO SS enable */
> +       /* RPHY Setting */
> +       err |= ps8622_set(cl, 0x04, 0x8a, 0x0c); /* [3:2] CDR tune wait cycle
> +                                                 * before measure for fine tune
> +                                                 * b00: 1us b01: 0.5us b10:2us
> +                                                 * b11: 4us */
> +       err |= ps8622_set(cl, 0x04, 0x89, 0x08); /* [3] RFD always on */
> +       err |= ps8622_set(cl, 0x04, 0x71, 0x2d); /* CTN lock in/out:
> +                                                 * 20000ppm/80000ppm.
> +                                                 * Lock out 2 times. */
> +       /* 2.7G CDR settings */
> +       err |= ps8622_set(cl, 0x04, 0x7d, 0x07); /* NOF=40LSB for HBR CDR
> +                                                 * setting */
> +       err |= ps8622_set(cl, 0x04, 0x7b, 0x00); /* [1:0] Fmin=+4bands */
> +       err |= ps8622_set(cl, 0x04, 0x7a, 0xfd); /* [7:5] DCO_FTRNG=+-40% */
> +       /* 1.62G CDR settings */
> +       err |= ps8622_set(cl, 0x04, 0xc0, 0x12); /* [5:2]NOF=64LSB [1:0]DCO
> +                                                 * scale is 2/5 */
> +       err |= ps8622_set(cl, 0x04, 0xc1, 0x92); /* Gitune=-37% */
> +       err |= ps8622_set(cl, 0x04, 0xc2, 0x1c); /* Fbstep=100% */
> +       err |= ps8622_set(cl, 0x04, 0x32, 0x80); /* [7] LOS signal disable */
> +       /* RPIO Setting */
> +       err |= ps8622_set(cl, 0x04, 0x00, 0xb0); /* [7:4] LVDS driver bias
> +                                                 * current : 75% (250mV swing)
> +                                                 * */
> +       err |= ps8622_set(cl, 0x04, 0x15, 0x40); /* [7:6] Right-bar GPIO output
> +                                                 * strength is 8mA */
> +       /* EQ Training State Machine Setting */
> +       err |= ps8622_set(cl, 0x04, 0x54, 0x10); /* RCO calibration start */
> +       /* Logic, needs more than 10 I2C command */
> +       err |= ps8622_set(cl, 0x01, 0x02, 0x80 | ps_bridge->max_lane_count);
> +                                                /* [4:0] MAX_LANE_COUNT set to
> +                                                 * max supported lanes */
> +       err |= ps8622_set(cl, 0x01, 0x21, 0x80 | ps_bridge->lane_count);
> +                                                /* [4:0] LANE_COUNT_SET set to
> +                                                 * chosen lane count */
> +       err |= ps8622_set(cl, 0x00, 0x52, 0x20);
> +       err |= ps8622_set(cl, 0x00, 0xf1, 0x03); /* HPD CP toggle enable */
> +       err |= ps8622_set(cl, 0x00, 0x62, 0x41);
> +       err |= ps8622_set(cl, 0x00, 0xf6, 0x01); /* Counter number, add 1ms
> +                                                 * counter delay */
> +       err |= ps8622_set(cl, 0x00, 0x77, 0x06); /* [6]PWM function control by
> +                                                 * DPCD0040f[7], default is PWM
> +                                                 * block always works. */
> +       err |= ps8622_set(cl, 0x00, 0x4c, 0x04); /* 04h Adjust VTotal tolerance
> +                                                 * to fix the 30Hz no display
> +                                                 * issue */
> +       err |= ps8622_set(cl, 0x01, 0xc0, 0x00); /* DPCD00400='h00, Parade OUI =
> +                                                 * 'h001cf8 */
> +       err |= ps8622_set(cl, 0x01, 0xc1, 0x1c); /* DPCD00401='h1c */
> +       err |= ps8622_set(cl, 0x01, 0xc2, 0xf8); /* DPCD00402='hf8 */
> +       err |= ps8622_set(cl, 0x01, 0xc3, 0x44); /* DPCD403~408 = ASCII code
> +                                                 * D2SLV5='h4432534c5635 */
> +       err |= ps8622_set(cl, 0x01, 0xc4, 0x32); /* DPCD404 */
> +       err |= ps8622_set(cl, 0x01, 0xc5, 0x53); /* DPCD405 */
> +       err |= ps8622_set(cl, 0x01, 0xc6, 0x4c); /* DPCD406 */
> +       err |= ps8622_set(cl, 0x01, 0xc7, 0x56); /* DPCD407 */
> +       err |= ps8622_set(cl, 0x01, 0xc8, 0x35); /* DPCD408 */
> +       err |= ps8622_set(cl, 0x01, 0xca, 0x01); /* DPCD40A, Initial Code major
> +                                                 * revision '01' */
> +       err |= ps8622_set(cl, 0x01, 0xcb, 0x05); /* DPCD40B, Initial Code minor
> +                                                 * revision '05' */
> +       if (ps_bridge->bl) {
> +               err |= ps8622_set(cl, 0x01, 0xa5, 0xa0);
> +                                               /* DPCD720, internal PWM */
> +               err |= ps8622_set(cl, 0x01, 0xa7,
> +                               ps_bridge->bl->props.brightness);
> +                                                /* FFh for 100% brightness,
> +                                                 *  0h for 0% brightness */
> +       } else {
> +               err |= ps8622_set(cl, 0x01, 0xa5, 0x80);
> +                                               /* DPCD720, external PWM */
> +       }
> +       err |= ps8622_set(cl, 0x01, 0xcc, 0x13); /* Set LVDS output as 6bit-VESA
> +                                                 * mapping, single LVDS channel
> +                                                 * */
> +       err |= ps8622_set(cl, 0x02, 0xb1, 0x20); /* Enable SSC set by register
> +                                                 * */
> +       err |= ps8622_set(cl, 0x04, 0x10, 0x16); /* Set SSC enabled and +/-1%
> +                                                 * central spreading */
> +       /* Logic end */
> +       err |= ps8622_set(cl, 0x04, 0x59, 0x60); /* MPU Clock source: LC => RCO
> +                                                 * */
> +       err |= ps8622_set(cl, 0x04, 0x54, 0x14); /* LC -> RCO */
> +       err |= ps8622_set(cl, 0x02, 0xa1, 0x91); /* HPD high */
> +
> +       return err ? -EIO : 0;
> +}
> +
> +static int ps8622_backlight_update(struct backlight_device *bl)
> +{
> +       struct ps8622_bridge *ps_bridge = dev_get_drvdata(&bl->dev);
> +       int ret, brightness = bl->props.brightness;
> +
> +       if (bl->props.power != FB_BLANK_UNBLANK ||
> +           bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
> +               brightness = 0;
> +
> +       mutex_lock(&ps_bridge->enable_mutex);
> +
> +       if (!ps_bridge->enabled) {
> +               ret = -EINVAL;
> +               goto out;
> +       }
> +
> +       ret = ps8622_set(ps_bridge->client, 0x01, 0xa7, brightness);
> +
> +out:
> +       mutex_unlock(&ps_bridge->enable_mutex);
> +       return ret;
> +}
> +
> +static int ps8622_backlight_get(struct backlight_device *bl)
> +{
> +       return bl->props.brightness;
> +}
> +
> +static const struct backlight_ops ps8622_backlight_ops = {
> +       .update_status  = ps8622_backlight_update,
> +       .get_brightness = ps8622_backlight_get,
> +};
> +
> +static void ps8622_pre_enable(struct drm_bridge *bridge)
> +{
> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
> +       int ret;
> +
> +       mutex_lock(&ps_bridge->enable_mutex);
> +       if (ps_bridge->enabled)
> +               goto out;
> +
> +       if (gpio_is_valid(ps_bridge->gpio_rst_n))
> +               gpio_set_value(ps_bridge->gpio_rst_n, 0);
> +
> +       if (ps_bridge->v12) {
> +               ret = regulator_enable(ps_bridge->v12);
> +               if (ret)
> +                       DRM_ERROR("fails to enable ps_bridge->v12");
> +       }
> +
> +       drm_next_bridge_pre_enable(bridge);
> +
> +       if (gpio_is_valid(ps_bridge->gpio_slp_n))
> +               gpio_set_value(ps_bridge->gpio_slp_n, 1);
> +
> +       /*
> +        * T1 is the range of time that it takes for the power to rise after we
> +        * enable the lcd fet. T2 is the range of time in which the data sheet
> +        * specifies we should deassert the reset pin.
> +        *
> +        * If it takes T1.max for the power to rise, we need to wait atleast
> +        * T2.min before deasserting the reset pin. If it takes T1.min for the
> +        * power to rise, we need to wait at most T2.max before deasserting the
> +        * reset pin.
> +        */
> +       usleep_range(PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US,
> +                    PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US);
> +
> +       if (gpio_is_valid(ps_bridge->gpio_rst_n))
> +               gpio_set_value(ps_bridge->gpio_rst_n, 1);
> +
> +       ret = ps8622_send_config(ps_bridge);
> +       if (ret)
> +               DRM_ERROR("Failed to send config to bridge (%d)\n", ret);
> +
> +       ps_bridge->enabled = true;
> +
> +out:
> +       mutex_unlock(&ps_bridge->enable_mutex);
> +}
> +
> +static void ps8622_enable(struct drm_bridge *bridge)
> +{
> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
> +
> +       mutex_lock(&ps_bridge->enable_mutex);
> +       drm_next_bridge_enable(bridge);
> +       mutex_unlock(&ps_bridge->enable_mutex);
> +}
> +
> +static void ps8622_disable(struct drm_bridge *bridge)
> +{
> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
> +
> +       mutex_lock(&ps_bridge->enable_mutex);
> +
> +       if (!ps_bridge->enabled)
> +               goto out;
> +
> +       ps_bridge->enabled = false;
> +
> +       drm_next_bridge_disable(bridge);
> +       msleep(PS8622_PWMO_END_T12_MS);
> +
> +       /*
> +        * This doesn't matter if the regulators are turned off, but something
> +        * else might keep them on. In that case, we want to assert the slp gpio
> +        * to lower power.
> +        */
> +       if (gpio_is_valid(ps_bridge->gpio_slp_n))
> +               gpio_set_value(ps_bridge->gpio_slp_n, 0);
> +
> +       if (ps_bridge->v12)
> +               regulator_disable(ps_bridge->v12);
> +
> +       /*
> +        * Sleep for at least the amount of time that it takes the power rail to
> +        * fall to prevent asserting the rst gpio from doing anything.
> +        */
> +       usleep_range(PS8622_POWER_FALL_T16_MAX_US,
> +                    2 * PS8622_POWER_FALL_T16_MAX_US);
> +       if (gpio_is_valid(ps_bridge->gpio_rst_n))
> +               gpio_set_value(ps_bridge->gpio_rst_n, 0);
> +
> +       msleep(PS8622_POWER_OFF_T17_MS);
> +
> +out:
> +       mutex_unlock(&ps_bridge->enable_mutex);
> +}
> +
> +static void ps8622_post_disable(struct drm_bridge *bridge)
> +{
> +       drm_next_bridge_post_disable(bridge);
> +}
> +
> +static void ps8622_destroy(struct drm_bridge *bridge)
> +{
> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
> +
> +       drm_bridge_cleanup(bridge);
> +       if (ps_bridge->bl)
> +               backlight_device_unregister(ps_bridge->bl);
> +
> +       put_device(&ps_bridge->client->dev);
> +}
> +
> +static const struct drm_bridge_funcs ps8622_bridge_funcs = {
> +       .pre_enable = ps8622_pre_enable,
> +       .enable = ps8622_enable,
> +       .disable = ps8622_disable,
> +       .post_disable = ps8622_post_disable,
> +       .destroy = ps8622_destroy,
> +};
> +
> +static const struct of_device_id ps8622_devices[] = {
> +       {
> +               .compatible = "parade,ps8622",
> +               .data   = &ps8622_data,
> +       }, {
> +               .compatible = "parade,ps8625",
> +               .data   = &ps8625_data,
> +       }, {
> +               /* end node */
> +       }
> +};
> +
> +struct drm_bridge *ps8622_init(struct drm_device *dev,
> +                               struct drm_encoder *encoder,
> +                               struct i2c_client *client,
> +                               struct device_node *node)
> +{
> +       int ret;
> +       const struct of_device_id *match;
> +       const struct ps8622_device_data *device_data;
> +       struct drm_bridge *bridge;
> +       struct ps8622_bridge *ps_bridge;
> +
> +       node = of_find_matching_node_and_match(NULL, ps8622_devices, &match);
> +       if (!node)
> +               return NULL;
> +
> +       bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
> +       if (!bridge) {
> +               DRM_ERROR("Failed to allocate drm bridge\n");
> +               return NULL;
> +       }
> +
> +       ps_bridge = devm_kzalloc(dev->dev, sizeof(*ps_bridge), GFP_KERNEL);
> +       if (!ps_bridge) {
> +               DRM_ERROR("could not allocate ps bridge\n");
> +               return NULL;
> +       }
> +
> +       mutex_init(&ps_bridge->enable_mutex);
> +
> +       device_data = match->data;
> +       ps_bridge->client = client;
> +       ps_bridge->encoder = encoder;
> +       ps_bridge->bridge = bridge;
> +       ps_bridge->v12 = devm_regulator_get(&client->dev, "vdd_bridge");
> +       if (IS_ERR(ps_bridge->v12)) {
> +               DRM_INFO("no 1.2v regulator found for PS8622\n");
> +               ps_bridge->v12 = NULL;
> +       }
> +
> +       ps_bridge->gpio_slp_n = of_get_named_gpio(node, "sleep-gpio", 0);
> +       if (gpio_is_valid(ps_bridge->gpio_slp_n)) {
> +               ret = devm_gpio_request_one(&client->dev, ps_bridge->gpio_slp_n,
> +                                           GPIOF_OUT_INIT_HIGH,
> +                                           "PS8622_SLP_N");
> +               if (ret)
> +                       goto err_client;
> +       }
> +
> +       ps_bridge->gpio_rst_n = of_get_named_gpio(node, "reset-gpio", 0);
> +       if (gpio_is_valid(ps_bridge->gpio_rst_n)) {
> +               /*
> +                * Assert the reset pin high to avoid the bridge being
> +                * initialized prematurely
> +                */
> +               ret = devm_gpio_request_one(&client->dev, ps_bridge->gpio_rst_n,
> +                                           GPIOF_OUT_INIT_HIGH,
> +                                           "PS8622_RST_N");
> +               if (ret)
> +                       goto err_client;
> +       }
> +
> +       ps_bridge->max_lane_count = device_data->max_lane_count;
> +
> +       if (of_property_read_u8(node, "lane-count", &ps_bridge->lane_count))
> +               ps_bridge->lane_count = ps_bridge->max_lane_count;
> +       else if (ps_bridge->lane_count > ps_bridge->max_lane_count) {
> +               DRM_ERROR("lane-count property is too high for DP bridge\n");
> +               ps_bridge->lane_count = ps_bridge->max_lane_count;
> +       }
> +
> +       if (!of_find_property(node, "use-external-pwm", NULL)) {
> +               ps_bridge->bl = backlight_device_register("ps8622-backlight",
> +                               dev->dev, ps_bridge, &ps8622_backlight_ops,
> +                               NULL);
> +               if (IS_ERR(ps_bridge->bl)) {
> +                       DRM_ERROR("failed to register backlight\n");
> +                       ret = PTR_ERR(ps_bridge->bl);
> +                       ps_bridge->bl = NULL;
> +                       goto err_client;
> +               }
> +               ps_bridge->bl->props.max_brightness = PS8622_MAX_BRIGHTNESS;
> +               ps_bridge->bl->props.brightness = PS8622_MAX_BRIGHTNESS;
> +       }
> +
> +       ret = drm_bridge_init(dev, ps_bridge->bridge, &ps8622_bridge_funcs);
> +       if (ret) {
> +               DRM_ERROR("Failed to initialize bridge with drm\n");
> +               goto err_backlight;
> +       }
> +
> +       ps_bridge->bridge->driver_private = ps_bridge;
> +       ps_bridge->enabled = false;
> +
> +       if (!encoder->bridge)
> +               /* First entry in the bridge chain */
> +               encoder->bridge = bridge;
> +
> +       return bridge;
> +
> +err_backlight:
> +       if (ps_bridge->bl)
> +               backlight_device_unregister(ps_bridge->bl);
> +err_client:
> +       put_device(&client->dev);
> +       DRM_ERROR("device probe failed : %d\n", ret);
> +       return NULL;
> +}
> +EXPORT_SYMBOL(ps8622_init);
> diff --git a/include/drm/bridge/ps8622.h b/include/drm/bridge/ps8622.h
> new file mode 100644
> index 0000000..22f37b6
> --- /dev/null
> +++ b/include/drm/bridge/ps8622.h
> @@ -0,0 +1,41 @@
> +/*
> + * Copyright (C) 2014 Google, Inc.
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef _DRM_BRIDGE_PS8622_H_
> +#define _DRM_BRIDGE_PS8622_H_
> +
> +struct drm_device;
> +struct drm_encoder;
> +struct i2c_client;
> +struct device_node;
> +
> +#ifdef CONFIG_DRM_PS8622
> +
> +struct drm_bridge *ps8622_init(struct drm_device *dev,
> +                               struct drm_encoder *encoder,
> +                               struct i2c_client *client,
> +                               struct device_node *node);
> +
> +#else
> +
> +static inline struct drm_bridge *ps8622_init(struct drm_device *dev,
> +                               struct drm_encoder *encoder,
> +                               struct i2c_client *client,
> +                               struct device_node *node)
> +{
> +       return -ENODEV;
> +}
> +
> +#endif
> +
> +#endif
> --
> 1.7.9.5
>

Re: [PATCH V4 09/10] drm/bridge: Add ps8622/ps8625 bridge driver

[Javier Martinez Canillas]

Hello Ajay,

On Wed, Jun 11, 2014 at 8:27 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> From: Vincent Palatin <vpalatin@chromium.org>
>
> This patch adds drm_bridge driver for parade DisplayPort
> to LVDS bridge chip.
>
> Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
> Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
> Signed-off-by: Sean Paul <seanpaul@chromium.org>
> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
>  .../devicetree/bindings/drm/bridge/ps8622.txt      |   21 +
>  drivers/gpu/drm/bridge/Kconfig                     |    8 +
>  drivers/gpu/drm/bridge/Makefile                    |    1 +
>  drivers/gpu/drm/bridge/ps8622.c                    |  475 ++++++++++++++++++++
>  include/drm/bridge/ps8622.h                        |   41 ++
>  5 files changed, 546 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/drm/bridge/ps8622.txt
>  create mode 100644 drivers/gpu/drm/bridge/ps8622.c
>  create mode 100644 include/drm/bridge/ps8622.h
>
> diff --git a/Documentation/devicetree/bindings/drm/bridge/ps8622.txt b/Documentation/devicetree/bindings/drm/bridge/ps8622.txt
> new file mode 100644
> index 0000000..1afbd9c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/drm/bridge/ps8622.txt
> @@ -0,0 +1,21 @@
> +ps8622-bridge bindings
> +
> +Required properties:
> +       - compatible: "parade,ps8622"
> +       - reg: first i2c address of the bridge
> +       - sleep-gpio: OF device-tree gpio specification
> +       - reset-gpio: OF device-tree gpio specification
> +
> +Optional properties:
> +       - lane-count: number of DP lanes to use
> +       - use-external-pwm: backlight will be controlled by an external PWM
> +
> +Example:
> +       ps8622-bridge@48 {
> +               compatible = "parade,ps8622";
> +               reg = <0x48>;
> +               sleep-gpio = <&gpc3 6 1 0 0>;
> +               reset-gpio = <&gpc3 1 1 0 0>;
> +               display-timings = <&lcd_display_timings>;
> +               lane-count = <1>
> +       };
> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> index e3fb487..7b843c8 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -10,3 +10,11 @@ config DRM_PANEL_BINDER
>         select DRM_KMS_HELPER
>         select DRM_PANEL
>         ---help---
> +
> +config DRM_PS8622
> +       tristate "Parade eDP/LVDS bridge"
> +       depends on DRM
> +       select DRM_KMS_HELPER
> +       select BACKLIGHT_LCD_SUPPORT
> +       select BACKLIGHT_CLASS_DEVICE
> +       ---help---
> diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
> index ba8b5b8..b494d4b 100644
> --- a/drivers/gpu/drm/bridge/Makefile
> +++ b/drivers/gpu/drm/bridge/Makefile
> @@ -2,3 +2,4 @@ ccflags-y := -Iinclude/drm
>
>  obj-$(CONFIG_DRM_PTN3460) += ptn3460.o
>  obj-$(CONFIG_DRM_PANEL_BINDER) += panel_binder.o
> +obj-$(CONFIG_DRM_PS8622) += ps8622.o
> diff --git a/drivers/gpu/drm/bridge/ps8622.c b/drivers/gpu/drm/bridge/ps8622.c
> new file mode 100644
> index 0000000..387d332
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/ps8622.c
> @@ -0,0 +1,475 @@
> +/*
> + * Parade PS8622 eDP/LVDS bridge driver
> + *
> + * Copyright (C) 2014 Google, Inc.
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/backlight.h>
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/fb.h>
> +#include <linux/gpio.h>
> +#include <linux/i2c.h>
> +#include <linux/of.h>
> +#include <linux/of_gpio.h>
> +#include <linux/pm.h>
> +#include <linux/regulator/consumer.h>
> +
> +#include "drmP.h"
> +#include "drm_crtc.h"
> +#include "drm_crtc_helper.h"
> +
> +struct ps8622_bridge {
> +       struct drm_bridge *bridge;
> +       struct drm_encoder *encoder;
> +       struct i2c_client *client;
> +       struct regulator *v12;
> +       struct backlight_device *bl;
> +       struct mutex enable_mutex;
> +
> +       int gpio_slp_n;
> +       int gpio_rst_n;
> +
> +       u8 max_lane_count;
> +       u8 lane_count;
> +
> +       bool enabled;
> +};
> +
> +struct ps8622_device_data {
> +       u8 max_lane_count;
> +};
> +
> +static const struct ps8622_device_data ps8622_data = {
> +       .max_lane_count = 1,
> +};
> +
> +static const struct ps8622_device_data ps8625_data = {
> +       .max_lane_count = 2,
> +};
> +
> +/* Brightness scale on the Parade chip */
> +#define PS8622_MAX_BRIGHTNESS 0xff
> +
> +/* Timings taken from the version 1.7 datasheet for the PS8622/PS8625 */
> +#define PS8622_POWER_RISE_T1_MIN_US 10
> +#define PS8622_POWER_RISE_T1_MAX_US 10000
> +#define PS8622_RST_HIGH_T2_MIN_US 3000
> +#define PS8622_RST_HIGH_T2_MAX_US 30000
> +#define PS8622_PWMO_END_T12_MS 200
> +#define PS8622_POWER_FALL_T16_MAX_US 10000
> +#define PS8622_POWER_OFF_T17_MS 500
> +
> +#if ((PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US) > \
> +       (PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US))
> +#error "T2.min + T1.max must be less than T2.max + T1.min"
> +#endif
> +
> +static int ps8622_set(struct i2c_client *client, u8 page, u8 reg, u8 val)
> +{
> +       int ret;
> +       struct i2c_adapter *adap = client->adapter;
> +       struct i2c_msg msg;
> +       u8 data[] = {reg, val};
> +
> +       msg.addr = client->addr + page;
> +       msg.flags = 0;
> +       msg.len = sizeof(data);
> +       msg.buf = data;
> +
> +       ret = i2c_transfer(adap, &msg, 1);
> +       if (ret != 1)
> +               pr_warn("PS8622 I2C write (0x%02x,0x%02x,0x%02x) failed: %d\n",
> +                       client->addr + page, reg, val, ret);
> +       return !(ret == 1);
> +}
> +
> +static int ps8622_send_config(struct ps8622_bridge *ps_bridge)
> +{
> +       struct i2c_client *cl = ps_bridge->client;
> +       int err = 0;
> +
> +       /* wait 20ms after power ON */
> +       usleep_range(20000, 30000);
> +
> +       err |= ps8622_set(cl, 0x02, 0xa1, 0x01); /* HPD low */
> +       /* SW setting */
> +       err |= ps8622_set(cl, 0x04, 0x14, 0x01); /* [1:0] SW output 1.2V voltage
> +                                                 * is lower to 96% */
> +       /* RCO SS setting */
> +       err |= ps8622_set(cl, 0x04, 0xe3, 0x20); /* [5:4] = b01 0.5%, b10 1%,
> +                                                 * b11 1.5% */
> +       err |= ps8622_set(cl, 0x04, 0xe2, 0x80); /* [7] RCO SS enable */
> +       /* RPHY Setting */
> +       err |= ps8622_set(cl, 0x04, 0x8a, 0x0c); /* [3:2] CDR tune wait cycle
> +                                                 * before measure for fine tune
> +                                                 * b00: 1us b01: 0.5us b10:2us
> +                                                 * b11: 4us */
> +       err |= ps8622_set(cl, 0x04, 0x89, 0x08); /* [3] RFD always on */
> +       err |= ps8622_set(cl, 0x04, 0x71, 0x2d); /* CTN lock in/out:
> +                                                 * 20000ppm/80000ppm.
> +                                                 * Lock out 2 times. */
> +       /* 2.7G CDR settings */
> +       err |= ps8622_set(cl, 0x04, 0x7d, 0x07); /* NOF=40LSB for HBR CDR
> +                                                 * setting */
> +       err |= ps8622_set(cl, 0x04, 0x7b, 0x00); /* [1:0] Fmin=+4bands */
> +       err |= ps8622_set(cl, 0x04, 0x7a, 0xfd); /* [7:5] DCO_FTRNG=+-40% */
> +       /* 1.62G CDR settings */
> +       err |= ps8622_set(cl, 0x04, 0xc0, 0x12); /* [5:2]NOF=64LSB [1:0]DCO
> +                                                 * scale is 2/5 */
> +       err |= ps8622_set(cl, 0x04, 0xc1, 0x92); /* Gitune=-37% */
> +       err |= ps8622_set(cl, 0x04, 0xc2, 0x1c); /* Fbstep=100% */
> +       err |= ps8622_set(cl, 0x04, 0x32, 0x80); /* [7] LOS signal disable */
> +       /* RPIO Setting */
> +       err |= ps8622_set(cl, 0x04, 0x00, 0xb0); /* [7:4] LVDS driver bias
> +                                                 * current : 75% (250mV swing)
> +                                                 * */
> +       err |= ps8622_set(cl, 0x04, 0x15, 0x40); /* [7:6] Right-bar GPIO output
> +                                                 * strength is 8mA */
> +       /* EQ Training State Machine Setting */
> +       err |= ps8622_set(cl, 0x04, 0x54, 0x10); /* RCO calibration start */
> +       /* Logic, needs more than 10 I2C command */
> +       err |= ps8622_set(cl, 0x01, 0x02, 0x80 | ps_bridge->max_lane_count);
> +                                                /* [4:0] MAX_LANE_COUNT set to
> +                                                 * max supported lanes */
> +       err |= ps8622_set(cl, 0x01, 0x21, 0x80 | ps_bridge->lane_count);
> +                                                /* [4:0] LANE_COUNT_SET set to
> +                                                 * chosen lane count */
> +       err |= ps8622_set(cl, 0x00, 0x52, 0x20);
> +       err |= ps8622_set(cl, 0x00, 0xf1, 0x03); /* HPD CP toggle enable */
> +       err |= ps8622_set(cl, 0x00, 0x62, 0x41);
> +       err |= ps8622_set(cl, 0x00, 0xf6, 0x01); /* Counter number, add 1ms
> +                                                 * counter delay */
> +       err |= ps8622_set(cl, 0x00, 0x77, 0x06); /* [6]PWM function control by
> +                                                 * DPCD0040f[7], default is PWM
> +                                                 * block always works. */
> +       err |= ps8622_set(cl, 0x00, 0x4c, 0x04); /* 04h Adjust VTotal tolerance
> +                                                 * to fix the 30Hz no display
> +                                                 * issue */
> +       err |= ps8622_set(cl, 0x01, 0xc0, 0x00); /* DPCD00400='h00, Parade OUI =
> +                                                 * 'h001cf8 */
> +       err |= ps8622_set(cl, 0x01, 0xc1, 0x1c); /* DPCD00401='h1c */
> +       err |= ps8622_set(cl, 0x01, 0xc2, 0xf8); /* DPCD00402='hf8 */
> +       err |= ps8622_set(cl, 0x01, 0xc3, 0x44); /* DPCD403~408 = ASCII code
> +                                                 * D2SLV5='h4432534c5635 */
> +       err |= ps8622_set(cl, 0x01, 0xc4, 0x32); /* DPCD404 */
> +       err |= ps8622_set(cl, 0x01, 0xc5, 0x53); /* DPCD405 */
> +       err |= ps8622_set(cl, 0x01, 0xc6, 0x4c); /* DPCD406 */
> +       err |= ps8622_set(cl, 0x01, 0xc7, 0x56); /* DPCD407 */
> +       err |= ps8622_set(cl, 0x01, 0xc8, 0x35); /* DPCD408 */
> +       err |= ps8622_set(cl, 0x01, 0xca, 0x01); /* DPCD40A, Initial Code major
> +                                                 * revision '01' */
> +       err |= ps8622_set(cl, 0x01, 0xcb, 0x05); /* DPCD40B, Initial Code minor
> +                                                 * revision '05' */
> +       if (ps_bridge->bl) {
> +               err |= ps8622_set(cl, 0x01, 0xa5, 0xa0);
> +                                               /* DPCD720, internal PWM */
> +               err |= ps8622_set(cl, 0x01, 0xa7,
> +                               ps_bridge->bl->props.brightness);
> +                                                /* FFh for 100% brightness,
> +                                                 *  0h for 0% brightness */
> +       } else {
> +               err |= ps8622_set(cl, 0x01, 0xa5, 0x80);
> +                                               /* DPCD720, external PWM */
> +       }
> +       err |= ps8622_set(cl, 0x01, 0xcc, 0x13); /* Set LVDS output as 6bit-VESA
> +                                                 * mapping, single LVDS channel
> +                                                 * */
> +       err |= ps8622_set(cl, 0x02, 0xb1, 0x20); /* Enable SSC set by register
> +                                                 * */
> +       err |= ps8622_set(cl, 0x04, 0x10, 0x16); /* Set SSC enabled and +/-1%
> +                                                 * central spreading */
> +       /* Logic end */
> +       err |= ps8622_set(cl, 0x04, 0x59, 0x60); /* MPU Clock source: LC => RCO
> +                                                 * */
> +       err |= ps8622_set(cl, 0x04, 0x54, 0x14); /* LC -> RCO */
> +       err |= ps8622_set(cl, 0x02, 0xa1, 0x91); /* HPD high */
> +
> +       return err ? -EIO : 0;
> +}
> +
> +static int ps8622_backlight_update(struct backlight_device *bl)
> +{
> +       struct ps8622_bridge *ps_bridge = dev_get_drvdata(&bl->dev);
> +       int ret, brightness = bl->props.brightness;
> +
> +       if (bl->props.power != FB_BLANK_UNBLANK ||
> +           bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
> +               brightness = 0;
> +
> +       mutex_lock(&ps_bridge->enable_mutex);
> +
> +       if (!ps_bridge->enabled) {
> +               ret = -EINVAL;
> +               goto out;
> +       }
> +
> +       ret = ps8622_set(ps_bridge->client, 0x01, 0xa7, brightness);
> +
> +out:
> +       mutex_unlock(&ps_bridge->enable_mutex);
> +       return ret;
> +}
> +
> +static int ps8622_backlight_get(struct backlight_device *bl)
> +{
> +       return bl->props.brightness;
> +}
> +
> +static const struct backlight_ops ps8622_backlight_ops = {
> +       .update_status  = ps8622_backlight_update,
> +       .get_brightness = ps8622_backlight_get,
> +};
> +
> +static void ps8622_pre_enable(struct drm_bridge *bridge)
> +{
> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
> +       int ret;
> +
> +       mutex_lock(&ps_bridge->enable_mutex);
> +       if (ps_bridge->enabled)
> +               goto out;
> +
> +       if (gpio_is_valid(ps_bridge->gpio_rst_n))
> +               gpio_set_value(ps_bridge->gpio_rst_n, 0);
> +
> +       if (ps_bridge->v12) {
> +               ret = regulator_enable(ps_bridge->v12);
> +               if (ret)
> +                       DRM_ERROR("fails to enable ps_bridge->v12");
> +       }
> +
> +       drm_next_bridge_pre_enable(bridge);
> +
> +       if (gpio_is_valid(ps_bridge->gpio_slp_n))
> +               gpio_set_value(ps_bridge->gpio_slp_n, 1);
> +
> +       /*
> +        * T1 is the range of time that it takes for the power to rise after we
> +        * enable the lcd fet. T2 is the range of time in which the data sheet
> +        * specifies we should deassert the reset pin.
> +        *
> +        * If it takes T1.max for the power to rise, we need to wait atleast
> +        * T2.min before deasserting the reset pin. If it takes T1.min for the
> +        * power to rise, we need to wait at most T2.max before deasserting the
> +        * reset pin.
> +        */
> +       usleep_range(PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US,
> +                    PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US);
> +
> +       if (gpio_is_valid(ps_bridge->gpio_rst_n))
> +               gpio_set_value(ps_bridge->gpio_rst_n, 1);
> +
> +       ret = ps8622_send_config(ps_bridge);
> +       if (ret)
> +               DRM_ERROR("Failed to send config to bridge (%d)\n", ret);
> +
> +       ps_bridge->enabled = true;
> +
> +out:
> +       mutex_unlock(&ps_bridge->enable_mutex);
> +}
> +
> +static void ps8622_enable(struct drm_bridge *bridge)
> +{
> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
> +
> +       mutex_lock(&ps_bridge->enable_mutex);
> +       drm_next_bridge_enable(bridge);
> +       mutex_unlock(&ps_bridge->enable_mutex);
> +}
> +
> +static void ps8622_disable(struct drm_bridge *bridge)
> +{
> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
> +
> +       mutex_lock(&ps_bridge->enable_mutex);
> +
> +       if (!ps_bridge->enabled)
> +               goto out;
> +
> +       ps_bridge->enabled = false;
> +
> +       drm_next_bridge_disable(bridge);
> +       msleep(PS8622_PWMO_END_T12_MS);
> +
> +       /*
> +        * This doesn't matter if the regulators are turned off, but something
> +        * else might keep them on. In that case, we want to assert the slp gpio
> +        * to lower power.
> +        */
> +       if (gpio_is_valid(ps_bridge->gpio_slp_n))
> +               gpio_set_value(ps_bridge->gpio_slp_n, 0);
> +
> +       if (ps_bridge->v12)
> +               regulator_disable(ps_bridge->v12);
> +
> +       /*
> +        * Sleep for at least the amount of time that it takes the power rail to
> +        * fall to prevent asserting the rst gpio from doing anything.
> +        */
> +       usleep_range(PS8622_POWER_FALL_T16_MAX_US,
> +                    2 * PS8622_POWER_FALL_T16_MAX_US);
> +       if (gpio_is_valid(ps_bridge->gpio_rst_n))
> +               gpio_set_value(ps_bridge->gpio_rst_n, 0);
> +
> +       msleep(PS8622_POWER_OFF_T17_MS);
> +
> +out:
> +       mutex_unlock(&ps_bridge->enable_mutex);
> +}
> +
> +static void ps8622_post_disable(struct drm_bridge *bridge)
> +{
> +       drm_next_bridge_post_disable(bridge);
> +}
> +
> +static void ps8622_destroy(struct drm_bridge *bridge)
> +{
> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
> +
> +       drm_bridge_cleanup(bridge);
> +       if (ps_bridge->bl)
> +               backlight_device_unregister(ps_bridge->bl);
> +
> +       put_device(&ps_bridge->client->dev);
> +}
> +
> +static const struct drm_bridge_funcs ps8622_bridge_funcs = {
> +       .pre_enable = ps8622_pre_enable,
> +       .enable = ps8622_enable,
> +       .disable = ps8622_disable,
> +       .post_disable = ps8622_post_disable,
> +       .destroy = ps8622_destroy,
> +};
> +
> +static const struct of_device_id ps8622_devices[] = {
> +       {
> +               .compatible = "parade,ps8622",
> +               .data   = &ps8622_data,
> +       }, {
> +               .compatible = "parade,ps8625",
> +               .data   = &ps8625_data,
> +       }, {
> +               /* end node */
> +       }
> +};
> +
> +struct drm_bridge *ps8622_init(struct drm_device *dev,
> +                               struct drm_encoder *encoder,
> +                               struct i2c_client *client,
> +                               struct device_node *node)
> +{
> +       int ret;
> +       const struct of_device_id *match;
> +       const struct ps8622_device_data *device_data;
> +       struct drm_bridge *bridge;
> +       struct ps8622_bridge *ps_bridge;
> +
> +       node = of_find_matching_node_and_match(NULL, ps8622_devices, &match);
> +       if (!node)
> +               return NULL;
> +
> +       bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
> +       if (!bridge) {
> +               DRM_ERROR("Failed to allocate drm bridge\n");
> +               return NULL;
> +       }
> +
> +       ps_bridge = devm_kzalloc(dev->dev, sizeof(*ps_bridge), GFP_KERNEL);
> +       if (!ps_bridge) {
> +               DRM_ERROR("could not allocate ps bridge\n");

It's not necessary to log OOM errors since the mm subsystem already
logs this and calls dump_stack().

> +               return NULL;
> +       }
> +
> +       mutex_init(&ps_bridge->enable_mutex);
> +
> +       device_data = match->data;
> +       ps_bridge->client = client;
> +       ps_bridge->encoder = encoder;
> +       ps_bridge->bridge = bridge;
> +       ps_bridge->v12 = devm_regulator_get(&client->dev, "vdd_bridge");
> +       if (IS_ERR(ps_bridge->v12)) {
> +               DRM_INFO("no 1.2v regulator found for PS8622\n");
> +               ps_bridge->v12 = NULL;
> +       }
> +
> +       ps_bridge->gpio_slp_n = of_get_named_gpio(node, "sleep-gpio", 0);

The new descriptor-based GPIO interface should be used if possible
instead of the deprecated integer-based API.

> +       if (gpio_is_valid(ps_bridge->gpio_slp_n)) {
> +               ret = devm_gpio_request_one(&client->dev, ps_bridge->gpio_slp_n,
> +                                           GPIOF_OUT_INIT_HIGH,
> +                                           "PS8622_SLP_N");
> +               if (ret)
> +                       goto err_client;
> +       }
> +
> +       ps_bridge->gpio_rst_n = of_get_named_gpio(node, "reset-gpio", 0);
> +       if (gpio_is_valid(ps_bridge->gpio_rst_n)) {
> +               /*
> +                * Assert the reset pin high to avoid the bridge being
> +                * initialized prematurely
> +                */
> +               ret = devm_gpio_request_one(&client->dev, ps_bridge->gpio_rst_n,
> +                                           GPIOF_OUT_INIT_HIGH,
> +                                           "PS8622_RST_N");
> +               if (ret)
> +                       goto err_client;
> +       }
> +
> +       ps_bridge->max_lane_count = device_data->max_lane_count;
> +
> +       if (of_property_read_u8(node, "lane-count", &ps_bridge->lane_count))
> +               ps_bridge->lane_count = ps_bridge->max_lane_count;
> +       else if (ps_bridge->lane_count > ps_bridge->max_lane_count) {
> +               DRM_ERROR("lane-count property is too high for DP bridge\n");

DRM_INFO() instead?

> +               ps_bridge->lane_count = ps_bridge->max_lane_count;
> +       }
> +
> +       if (!of_find_property(node, "use-external-pwm", NULL)) {
> +               ps_bridge->bl = backlight_device_register("ps8622-backlight",
> +                               dev->dev, ps_bridge, &ps8622_backlight_ops,
> +                               NULL);
> +               if (IS_ERR(ps_bridge->bl)) {
> +                       DRM_ERROR("failed to register backlight\n");
> +                       ret = PTR_ERR(ps_bridge->bl);
> +                       ps_bridge->bl = NULL;
> +                       goto err_client;
> +               }
> +               ps_bridge->bl->props.max_brightness = PS8622_MAX_BRIGHTNESS;
> +               ps_bridge->bl->props.brightness = PS8622_MAX_BRIGHTNESS;
> +       }
> +
> +       ret = drm_bridge_init(dev, ps_bridge->bridge, &ps8622_bridge_funcs);
> +       if (ret) {
> +               DRM_ERROR("Failed to initialize bridge with drm\n");
> +               goto err_backlight;
> +       }
> +
> +       ps_bridge->bridge->driver_private = ps_bridge;
> +       ps_bridge->enabled = false;
> +
> +       if (!encoder->bridge)
> +               /* First entry in the bridge chain */
> +               encoder->bridge = bridge;
> +
> +       return bridge;
> +
> +err_backlight:
> +       if (ps_bridge->bl)
> +               backlight_device_unregister(ps_bridge->bl);
> +err_client:
> +       put_device(&client->dev);
> +       DRM_ERROR("device probe failed : %d\n", ret);
> +       return NULL;
> +}
> +EXPORT_SYMBOL(ps8622_init);
> diff --git a/include/drm/bridge/ps8622.h b/include/drm/bridge/ps8622.h
> new file mode 100644
> index 0000000..22f37b6
> --- /dev/null
> +++ b/include/drm/bridge/ps8622.h
> @@ -0,0 +1,41 @@
> +/*
> + * Copyright (C) 2014 Google, Inc.
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef _DRM_BRIDGE_PS8622_H_
> +#define _DRM_BRIDGE_PS8622_H_
> +
> +struct drm_device;
> +struct drm_encoder;
> +struct i2c_client;
> +struct device_node;
> +
> +#ifdef CONFIG_DRM_PS8622
> +
> +struct drm_bridge *ps8622_init(struct drm_device *dev,
> +                               struct drm_encoder *encoder,
> +                               struct i2c_client *client,
> +                               struct device_node *node);
> +
> +#else
> +
> +static inline struct drm_bridge *ps8622_init(struct drm_device *dev,
> +                               struct drm_encoder *encoder,
> +                               struct i2c_client *client,
> +                               struct device_node *node)
> +{
> +       return -ENODEV;
> +}
> +
> +#endif
> +
> +#endif
> --
> 1.7.9.5
>

Best regards,
Javier

Re: [PATCH V4 09/10] drm/bridge: Add ps8622/ps8625 bridge driver

[Ajay kumar]

Hi Javier,

Thanks for the review.

On Mon, Jun 23, 2014 at 12:05 PM, Javier Martinez Canillas
<javier@dowhile0.org> wrote:
> Hello Ajay,
>
> On Wed, Jun 11, 2014 at 8:27 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> From: Vincent Palatin <vpalatin@chromium.org>
>>
>> This patch adds drm_bridge driver for parade DisplayPort
>> to LVDS bridge chip.
>>
>> Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
>> Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
>> Signed-off-by: Sean Paul <seanpaul@chromium.org>
>> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
>> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
>> ---
>>  .../devicetree/bindings/drm/bridge/ps8622.txt      |   21 +
>>  drivers/gpu/drm/bridge/Kconfig                     |    8 +
>>  drivers/gpu/drm/bridge/Makefile                    |    1 +
>>  drivers/gpu/drm/bridge/ps8622.c                    |  475 ++++++++++++++++++++
>>  include/drm/bridge/ps8622.h                        |   41 ++
>>  5 files changed, 546 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/drm/bridge/ps8622.txt
>>  create mode 100644 drivers/gpu/drm/bridge/ps8622.c
>>  create mode 100644 include/drm/bridge/ps8622.h
>>
>> diff --git a/Documentation/devicetree/bindings/drm/bridge/ps8622.txt b/Documentation/devicetree/bindings/drm/bridge/ps8622.txt
>> new file mode 100644
>> index 0000000..1afbd9c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/drm/bridge/ps8622.txt
>> @@ -0,0 +1,21 @@
>> +ps8622-bridge bindings
>> +
>> +Required properties:
>> +       - compatible: "parade,ps8622"
>> +       - reg: first i2c address of the bridge
>> +       - sleep-gpio: OF device-tree gpio specification
>> +       - reset-gpio: OF device-tree gpio specification
>> +
>> +Optional properties:
>> +       - lane-count: number of DP lanes to use
>> +       - use-external-pwm: backlight will be controlled by an external PWM
>> +
>> +Example:
>> +       ps8622-bridge@48 {
>> +               compatible = "parade,ps8622";
>> +               reg = <0x48>;
>> +               sleep-gpio = <&gpc3 6 1 0 0>;
>> +               reset-gpio = <&gpc3 1 1 0 0>;
>> +               display-timings = <&lcd_display_timings>;
>> +               lane-count = <1>
>> +       };
>> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
>> index e3fb487..7b843c8 100644
>> --- a/drivers/gpu/drm/bridge/Kconfig
>> +++ b/drivers/gpu/drm/bridge/Kconfig
>> @@ -10,3 +10,11 @@ config DRM_PANEL_BINDER
>>         select DRM_KMS_HELPER
>>         select DRM_PANEL
>>         ---help---
>> +
>> +config DRM_PS8622
>> +       tristate "Parade eDP/LVDS bridge"
>> +       depends on DRM
>> +       select DRM_KMS_HELPER
>> +       select BACKLIGHT_LCD_SUPPORT
>> +       select BACKLIGHT_CLASS_DEVICE
>> +       ---help---
>> diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
>> index ba8b5b8..b494d4b 100644
>> --- a/drivers/gpu/drm/bridge/Makefile
>> +++ b/drivers/gpu/drm/bridge/Makefile
>> @@ -2,3 +2,4 @@ ccflags-y := -Iinclude/drm
>>
>>  obj-$(CONFIG_DRM_PTN3460) += ptn3460.o
>>  obj-$(CONFIG_DRM_PANEL_BINDER) += panel_binder.o
>> +obj-$(CONFIG_DRM_PS8622) += ps8622.o
>> diff --git a/drivers/gpu/drm/bridge/ps8622.c b/drivers/gpu/drm/bridge/ps8622.c
>> new file mode 100644
>> index 0000000..387d332
>> --- /dev/null
>> +++ b/drivers/gpu/drm/bridge/ps8622.c
>> @@ -0,0 +1,475 @@
>> +/*
>> + * Parade PS8622 eDP/LVDS bridge driver
>> + *
>> + * Copyright (C) 2014 Google, Inc.
>> + *
>> + * This software is licensed under the terms of the GNU General Public
>> + * License version 2, as published by the Free Software Foundation, and
>> + * may be copied, distributed, and modified under those terms.
>> + *
>> + * This program is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> + * GNU General Public License for more details.
>> + */
>> +
>> +#include <linux/module.h>
>> +#include <linux/backlight.h>
>> +#include <linux/delay.h>
>> +#include <linux/err.h>
>> +#include <linux/fb.h>
>> +#include <linux/gpio.h>
>> +#include <linux/i2c.h>
>> +#include <linux/of.h>
>> +#include <linux/of_gpio.h>
>> +#include <linux/pm.h>
>> +#include <linux/regulator/consumer.h>
>> +
>> +#include "drmP.h"
>> +#include "drm_crtc.h"
>> +#include "drm_crtc_helper.h"
>> +
>> +struct ps8622_bridge {
>> +       struct drm_bridge *bridge;
>> +       struct drm_encoder *encoder;
>> +       struct i2c_client *client;
>> +       struct regulator *v12;
>> +       struct backlight_device *bl;
>> +       struct mutex enable_mutex;
>> +
>> +       int gpio_slp_n;
>> +       int gpio_rst_n;
>> +
>> +       u8 max_lane_count;
>> +       u8 lane_count;
>> +
>> +       bool enabled;
>> +};
>> +
>> +struct ps8622_device_data {
>> +       u8 max_lane_count;
>> +};
>> +
>> +static const struct ps8622_device_data ps8622_data = {
>> +       .max_lane_count = 1,
>> +};
>> +
>> +static const struct ps8622_device_data ps8625_data = {
>> +       .max_lane_count = 2,
>> +};
>> +
>> +/* Brightness scale on the Parade chip */
>> +#define PS8622_MAX_BRIGHTNESS 0xff
>> +
>> +/* Timings taken from the version 1.7 datasheet for the PS8622/PS8625 */
>> +#define PS8622_POWER_RISE_T1_MIN_US 10
>> +#define PS8622_POWER_RISE_T1_MAX_US 10000
>> +#define PS8622_RST_HIGH_T2_MIN_US 3000
>> +#define PS8622_RST_HIGH_T2_MAX_US 30000
>> +#define PS8622_PWMO_END_T12_MS 200
>> +#define PS8622_POWER_FALL_T16_MAX_US 10000
>> +#define PS8622_POWER_OFF_T17_MS 500
>> +
>> +#if ((PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US) > \
>> +       (PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US))
>> +#error "T2.min + T1.max must be less than T2.max + T1.min"
>> +#endif
>> +
>> +static int ps8622_set(struct i2c_client *client, u8 page, u8 reg, u8 val)
>> +{
>> +       int ret;
>> +       struct i2c_adapter *adap = client->adapter;
>> +       struct i2c_msg msg;
>> +       u8 data[] = {reg, val};
>> +
>> +       msg.addr = client->addr + page;
>> +       msg.flags = 0;
>> +       msg.len = sizeof(data);
>> +       msg.buf = data;
>> +
>> +       ret = i2c_transfer(adap, &msg, 1);
>> +       if (ret != 1)
>> +               pr_warn("PS8622 I2C write (0x%02x,0x%02x,0x%02x) failed: %d\n",
>> +                       client->addr + page, reg, val, ret);
>> +       return !(ret == 1);
>> +}
>> +
>> +static int ps8622_send_config(struct ps8622_bridge *ps_bridge)
>> +{
>> +       struct i2c_client *cl = ps_bridge->client;
>> +       int err = 0;
>> +
>> +       /* wait 20ms after power ON */
>> +       usleep_range(20000, 30000);
>> +
>> +       err |= ps8622_set(cl, 0x02, 0xa1, 0x01); /* HPD low */
>> +       /* SW setting */
>> +       err |= ps8622_set(cl, 0x04, 0x14, 0x01); /* [1:0] SW output 1.2V voltage
>> +                                                 * is lower to 96% */
>> +       /* RCO SS setting */
>> +       err |= ps8622_set(cl, 0x04, 0xe3, 0x20); /* [5:4] = b01 0.5%, b10 1%,
>> +                                                 * b11 1.5% */
>> +       err |= ps8622_set(cl, 0x04, 0xe2, 0x80); /* [7] RCO SS enable */
>> +       /* RPHY Setting */
>> +       err |= ps8622_set(cl, 0x04, 0x8a, 0x0c); /* [3:2] CDR tune wait cycle
>> +                                                 * before measure for fine tune
>> +                                                 * b00: 1us b01: 0.5us b10:2us
>> +                                                 * b11: 4us */
>> +       err |= ps8622_set(cl, 0x04, 0x89, 0x08); /* [3] RFD always on */
>> +       err |= ps8622_set(cl, 0x04, 0x71, 0x2d); /* CTN lock in/out:
>> +                                                 * 20000ppm/80000ppm.
>> +                                                 * Lock out 2 times. */
>> +       /* 2.7G CDR settings */
>> +       err |= ps8622_set(cl, 0x04, 0x7d, 0x07); /* NOF=40LSB for HBR CDR
>> +                                                 * setting */
>> +       err |= ps8622_set(cl, 0x04, 0x7b, 0x00); /* [1:0] Fmin=+4bands */
>> +       err |= ps8622_set(cl, 0x04, 0x7a, 0xfd); /* [7:5] DCO_FTRNG=+-40% */
>> +       /* 1.62G CDR settings */
>> +       err |= ps8622_set(cl, 0x04, 0xc0, 0x12); /* [5:2]NOF=64LSB [1:0]DCO
>> +                                                 * scale is 2/5 */
>> +       err |= ps8622_set(cl, 0x04, 0xc1, 0x92); /* Gitune=-37% */
>> +       err |= ps8622_set(cl, 0x04, 0xc2, 0x1c); /* Fbstep=100% */
>> +       err |= ps8622_set(cl, 0x04, 0x32, 0x80); /* [7] LOS signal disable */
>> +       /* RPIO Setting */
>> +       err |= ps8622_set(cl, 0x04, 0x00, 0xb0); /* [7:4] LVDS driver bias
>> +                                                 * current : 75% (250mV swing)
>> +                                                 * */
>> +       err |= ps8622_set(cl, 0x04, 0x15, 0x40); /* [7:6] Right-bar GPIO output
>> +                                                 * strength is 8mA */
>> +       /* EQ Training State Machine Setting */
>> +       err |= ps8622_set(cl, 0x04, 0x54, 0x10); /* RCO calibration start */
>> +       /* Logic, needs more than 10 I2C command */
>> +       err |= ps8622_set(cl, 0x01, 0x02, 0x80 | ps_bridge->max_lane_count);
>> +                                                /* [4:0] MAX_LANE_COUNT set to
>> +                                                 * max supported lanes */
>> +       err |= ps8622_set(cl, 0x01, 0x21, 0x80 | ps_bridge->lane_count);
>> +                                                /* [4:0] LANE_COUNT_SET set to
>> +                                                 * chosen lane count */
>> +       err |= ps8622_set(cl, 0x00, 0x52, 0x20);
>> +       err |= ps8622_set(cl, 0x00, 0xf1, 0x03); /* HPD CP toggle enable */
>> +       err |= ps8622_set(cl, 0x00, 0x62, 0x41);
>> +       err |= ps8622_set(cl, 0x00, 0xf6, 0x01); /* Counter number, add 1ms
>> +                                                 * counter delay */
>> +       err |= ps8622_set(cl, 0x00, 0x77, 0x06); /* [6]PWM function control by
>> +                                                 * DPCD0040f[7], default is PWM
>> +                                                 * block always works. */
>> +       err |= ps8622_set(cl, 0x00, 0x4c, 0x04); /* 04h Adjust VTotal tolerance
>> +                                                 * to fix the 30Hz no display
>> +                                                 * issue */
>> +       err |= ps8622_set(cl, 0x01, 0xc0, 0x00); /* DPCD00400='h00, Parade OUI =
>> +                                                 * 'h001cf8 */
>> +       err |= ps8622_set(cl, 0x01, 0xc1, 0x1c); /* DPCD00401='h1c */
>> +       err |= ps8622_set(cl, 0x01, 0xc2, 0xf8); /* DPCD00402='hf8 */
>> +       err |= ps8622_set(cl, 0x01, 0xc3, 0x44); /* DPCD403~408 = ASCII code
>> +                                                 * D2SLV5='h4432534c5635 */
>> +       err |= ps8622_set(cl, 0x01, 0xc4, 0x32); /* DPCD404 */
>> +       err |= ps8622_set(cl, 0x01, 0xc5, 0x53); /* DPCD405 */
>> +       err |= ps8622_set(cl, 0x01, 0xc6, 0x4c); /* DPCD406 */
>> +       err |= ps8622_set(cl, 0x01, 0xc7, 0x56); /* DPCD407 */
>> +       err |= ps8622_set(cl, 0x01, 0xc8, 0x35); /* DPCD408 */
>> +       err |= ps8622_set(cl, 0x01, 0xca, 0x01); /* DPCD40A, Initial Code major
>> +                                                 * revision '01' */
>> +       err |= ps8622_set(cl, 0x01, 0xcb, 0x05); /* DPCD40B, Initial Code minor
>> +                                                 * revision '05' */
>> +       if (ps_bridge->bl) {
>> +               err |= ps8622_set(cl, 0x01, 0xa5, 0xa0);
>> +                                               /* DPCD720, internal PWM */
>> +               err |= ps8622_set(cl, 0x01, 0xa7,
>> +                               ps_bridge->bl->props.brightness);
>> +                                                /* FFh for 100% brightness,
>> +                                                 *  0h for 0% brightness */
>> +       } else {
>> +               err |= ps8622_set(cl, 0x01, 0xa5, 0x80);
>> +                                               /* DPCD720, external PWM */
>> +       }
>> +       err |= ps8622_set(cl, 0x01, 0xcc, 0x13); /* Set LVDS output as 6bit-VESA
>> +                                                 * mapping, single LVDS channel
>> +                                                 * */
>> +       err |= ps8622_set(cl, 0x02, 0xb1, 0x20); /* Enable SSC set by register
>> +                                                 * */
>> +       err |= ps8622_set(cl, 0x04, 0x10, 0x16); /* Set SSC enabled and +/-1%
>> +                                                 * central spreading */
>> +       /* Logic end */
>> +       err |= ps8622_set(cl, 0x04, 0x59, 0x60); /* MPU Clock source: LC => RCO
>> +                                                 * */
>> +       err |= ps8622_set(cl, 0x04, 0x54, 0x14); /* LC -> RCO */
>> +       err |= ps8622_set(cl, 0x02, 0xa1, 0x91); /* HPD high */
>> +
>> +       return err ? -EIO : 0;
>> +}
>> +
>> +static int ps8622_backlight_update(struct backlight_device *bl)
>> +{
>> +       struct ps8622_bridge *ps_bridge = dev_get_drvdata(&bl->dev);
>> +       int ret, brightness = bl->props.brightness;
>> +
>> +       if (bl->props.power != FB_BLANK_UNBLANK ||
>> +           bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
>> +               brightness = 0;
>> +
>> +       mutex_lock(&ps_bridge->enable_mutex);
>> +
>> +       if (!ps_bridge->enabled) {
>> +               ret = -EINVAL;
>> +               goto out;
>> +       }
>> +
>> +       ret = ps8622_set(ps_bridge->client, 0x01, 0xa7, brightness);
>> +
>> +out:
>> +       mutex_unlock(&ps_bridge->enable_mutex);
>> +       return ret;
>> +}
>> +
>> +static int ps8622_backlight_get(struct backlight_device *bl)
>> +{
>> +       return bl->props.brightness;
>> +}
>> +
>> +static const struct backlight_ops ps8622_backlight_ops = {
>> +       .update_status  = ps8622_backlight_update,
>> +       .get_brightness = ps8622_backlight_get,
>> +};
>> +
>> +static void ps8622_pre_enable(struct drm_bridge *bridge)
>> +{
>> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
>> +       int ret;
>> +
>> +       mutex_lock(&ps_bridge->enable_mutex);
>> +       if (ps_bridge->enabled)
>> +               goto out;
>> +
>> +       if (gpio_is_valid(ps_bridge->gpio_rst_n))
>> +               gpio_set_value(ps_bridge->gpio_rst_n, 0);
>> +
>> +       if (ps_bridge->v12) {
>> +               ret = regulator_enable(ps_bridge->v12);
>> +               if (ret)
>> +                       DRM_ERROR("fails to enable ps_bridge->v12");
>> +       }
>> +
>> +       drm_next_bridge_pre_enable(bridge);
>> +
>> +       if (gpio_is_valid(ps_bridge->gpio_slp_n))
>> +               gpio_set_value(ps_bridge->gpio_slp_n, 1);
>> +
>> +       /*
>> +        * T1 is the range of time that it takes for the power to rise after we
>> +        * enable the lcd fet. T2 is the range of time in which the data sheet
>> +        * specifies we should deassert the reset pin.
>> +        *
>> +        * If it takes T1.max for the power to rise, we need to wait atleast
>> +        * T2.min before deasserting the reset pin. If it takes T1.min for the
>> +        * power to rise, we need to wait at most T2.max before deasserting the
>> +        * reset pin.
>> +        */
>> +       usleep_range(PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US,
>> +                    PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US);
>> +
>> +       if (gpio_is_valid(ps_bridge->gpio_rst_n))
>> +               gpio_set_value(ps_bridge->gpio_rst_n, 1);
>> +
>> +       ret = ps8622_send_config(ps_bridge);
>> +       if (ret)
>> +               DRM_ERROR("Failed to send config to bridge (%d)\n", ret);
>> +
>> +       ps_bridge->enabled = true;
>> +
>> +out:
>> +       mutex_unlock(&ps_bridge->enable_mutex);
>> +}
>> +
>> +static void ps8622_enable(struct drm_bridge *bridge)
>> +{
>> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
>> +
>> +       mutex_lock(&ps_bridge->enable_mutex);
>> +       drm_next_bridge_enable(bridge);
>> +       mutex_unlock(&ps_bridge->enable_mutex);
>> +}
>> +
>> +static void ps8622_disable(struct drm_bridge *bridge)
>> +{
>> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
>> +
>> +       mutex_lock(&ps_bridge->enable_mutex);
>> +
>> +       if (!ps_bridge->enabled)
>> +               goto out;
>> +
>> +       ps_bridge->enabled = false;
>> +
>> +       drm_next_bridge_disable(bridge);
>> +       msleep(PS8622_PWMO_END_T12_MS);
>> +
>> +       /*
>> +        * This doesn't matter if the regulators are turned off, but something
>> +        * else might keep them on. In that case, we want to assert the slp gpio
>> +        * to lower power.
>> +        */
>> +       if (gpio_is_valid(ps_bridge->gpio_slp_n))
>> +               gpio_set_value(ps_bridge->gpio_slp_n, 0);
>> +
>> +       if (ps_bridge->v12)
>> +               regulator_disable(ps_bridge->v12);
>> +
>> +       /*
>> +        * Sleep for at least the amount of time that it takes the power rail to
>> +        * fall to prevent asserting the rst gpio from doing anything.
>> +        */
>> +       usleep_range(PS8622_POWER_FALL_T16_MAX_US,
>> +                    2 * PS8622_POWER_FALL_T16_MAX_US);
>> +       if (gpio_is_valid(ps_bridge->gpio_rst_n))
>> +               gpio_set_value(ps_bridge->gpio_rst_n, 0);
>> +
>> +       msleep(PS8622_POWER_OFF_T17_MS);
>> +
>> +out:
>> +       mutex_unlock(&ps_bridge->enable_mutex);
>> +}
>> +
>> +static void ps8622_post_disable(struct drm_bridge *bridge)
>> +{
>> +       drm_next_bridge_post_disable(bridge);
>> +}
>> +
>> +static void ps8622_destroy(struct drm_bridge *bridge)
>> +{
>> +       struct ps8622_bridge *ps_bridge = bridge->driver_private;
>> +
>> +       drm_bridge_cleanup(bridge);
>> +       if (ps_bridge->bl)
>> +               backlight_device_unregister(ps_bridge->bl);
>> +
>> +       put_device(&ps_bridge->client->dev);
>> +}
>> +
>> +static const struct drm_bridge_funcs ps8622_bridge_funcs = {
>> +       .pre_enable = ps8622_pre_enable,
>> +       .enable = ps8622_enable,
>> +       .disable = ps8622_disable,
>> +       .post_disable = ps8622_post_disable,
>> +       .destroy = ps8622_destroy,
>> +};
>> +
>> +static const struct of_device_id ps8622_devices[] = {
>> +       {
>> +               .compatible = "parade,ps8622",
>> +               .data   = &ps8622_data,
>> +       }, {
>> +               .compatible = "parade,ps8625",
>> +               .data   = &ps8625_data,
>> +       }, {
>> +               /* end node */
>> +       }
>> +};
>> +
>> +struct drm_bridge *ps8622_init(struct drm_device *dev,
>> +                               struct drm_encoder *encoder,
>> +                               struct i2c_client *client,
>> +                               struct device_node *node)
>> +{
>> +       int ret;
>> +       const struct of_device_id *match;
>> +       const struct ps8622_device_data *device_data;
>> +       struct drm_bridge *bridge;
>> +       struct ps8622_bridge *ps_bridge;
>> +
>> +       node = of_find_matching_node_and_match(NULL, ps8622_devices, &match);
>> +       if (!node)
>> +               return NULL;
>> +
>> +       bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
>> +       if (!bridge) {
>> +               DRM_ERROR("Failed to allocate drm bridge\n");
>> +               return NULL;
>> +       }
>> +
>> +       ps_bridge = devm_kzalloc(dev->dev, sizeof(*ps_bridge), GFP_KERNEL);
>> +       if (!ps_bridge) {
>> +               DRM_ERROR("could not allocate ps bridge\n");
>
> It's not necessary to log OOM errors since the mm subsystem already
> logs this and calls dump_stack().
Ok. Will remove it.

>> +               return NULL;
>> +       }
>> +
>> +       mutex_init(&ps_bridge->enable_mutex);
>> +
>> +       device_data = match->data;
>> +       ps_bridge->client = client;
>> +       ps_bridge->encoder = encoder;
>> +       ps_bridge->bridge = bridge;
>> +       ps_bridge->v12 = devm_regulator_get(&client->dev, "vdd_bridge");
>> +       if (IS_ERR(ps_bridge->v12)) {
>> +               DRM_INFO("no 1.2v regulator found for PS8622\n");
>> +               ps_bridge->v12 = NULL;
>> +       }
>> +
>> +       ps_bridge->gpio_slp_n = of_get_named_gpio(node, "sleep-gpio", 0);
>
> The new descriptor-based GPIO interface should be used if possible
> instead of the deprecated integer-based API.
Ok, will use the same.

>> +       if (gpio_is_valid(ps_bridge->gpio_slp_n)) {
>> +               ret = devm_gpio_request_one(&client->dev, ps_bridge->gpio_slp_n,
>> +                                           GPIOF_OUT_INIT_HIGH,
>> +                                           "PS8622_SLP_N");
>> +               if (ret)
>> +                       goto err_client;
>> +       }
>> +
>> +       ps_bridge->gpio_rst_n = of_get_named_gpio(node, "reset-gpio", 0);
>> +       if (gpio_is_valid(ps_bridge->gpio_rst_n)) {
>> +               /*
>> +                * Assert the reset pin high to avoid the bridge being
>> +                * initialized prematurely
>> +                */
>> +               ret = devm_gpio_request_one(&client->dev, ps_bridge->gpio_rst_n,
>> +                                           GPIOF_OUT_INIT_HIGH,
>> +                                           "PS8622_RST_N");
>> +               if (ret)
>> +                       goto err_client;
>> +       }
>> +
>> +       ps_bridge->max_lane_count = device_data->max_lane_count;
>> +
>> +       if (of_property_read_u8(node, "lane-count", &ps_bridge->lane_count))
>> +               ps_bridge->lane_count = ps_bridge->max_lane_count;
>> +       else if (ps_bridge->lane_count > ps_bridge->max_lane_count) {
>> +               DRM_ERROR("lane-count property is too high for DP bridge\n");
>
> DRM_INFO() instead?
Right. Will change it.

>> +               ps_bridge->lane_count = ps_bridge->max_lane_count;
>> +       }
>> +
>> +       if (!of_find_property(node, "use-external-pwm", NULL)) {
>> +               ps_bridge->bl = backlight_device_register("ps8622-backlight",
>> +                               dev->dev, ps_bridge, &ps8622_backlight_ops,
>> +                               NULL);
>> +               if (IS_ERR(ps_bridge->bl)) {
>> +                       DRM_ERROR("failed to register backlight\n");
>> +                       ret = PTR_ERR(ps_bridge->bl);
>> +                       ps_bridge->bl = NULL;
>> +                       goto err_client;
>> +               }
>> +               ps_bridge->bl->props.max_brightness = PS8622_MAX_BRIGHTNESS;
>> +               ps_bridge->bl->props.brightness = PS8622_MAX_BRIGHTNESS;
>> +       }
>> +
>> +       ret = drm_bridge_init(dev, ps_bridge->bridge, &ps8622_bridge_funcs);
>> +       if (ret) {
>> +               DRM_ERROR("Failed to initialize bridge with drm\n");
>> +               goto err_backlight;
>> +       }
>> +
>> +       ps_bridge->bridge->driver_private = ps_bridge;
>> +       ps_bridge->enabled = false;
>> +
>> +       if (!encoder->bridge)
>> +               /* First entry in the bridge chain */
>> +               encoder->bridge = bridge;
>> +
>> +       return bridge;
>> +
>> +err_backlight:
>> +       if (ps_bridge->bl)
>> +               backlight_device_unregister(ps_bridge->bl);
>> +err_client:
>> +       put_device(&client->dev);
>> +       DRM_ERROR("device probe failed : %d\n", ret);
>> +       return NULL;
>> +}
>> +EXPORT_SYMBOL(ps8622_init);
>> diff --git a/include/drm/bridge/ps8622.h b/include/drm/bridge/ps8622.h
>> new file mode 100644
>> index 0000000..22f37b6
>> --- /dev/null
>> +++ b/include/drm/bridge/ps8622.h
>> @@ -0,0 +1,41 @@
>> +/*
>> + * Copyright (C) 2014 Google, Inc.
>> + *
>> + * This software is licensed under the terms of the GNU General Public
>> + * License version 2, as published by the Free Software Foundation, and
>> + * may be copied, distributed, and modified under those terms.
>> + *
>> + * This program is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> + * GNU General Public License for more details.
>> + */
>> +
>> +#ifndef _DRM_BRIDGE_PS8622_H_
>> +#define _DRM_BRIDGE_PS8622_H_
>> +
>> +struct drm_device;
>> +struct drm_encoder;
>> +struct i2c_client;
>> +struct device_node;
>> +
>> +#ifdef CONFIG_DRM_PS8622
>> +
>> +struct drm_bridge *ps8622_init(struct drm_device *dev,
>> +                               struct drm_encoder *encoder,
>> +                               struct i2c_client *client,
>> +                               struct device_node *node);
>> +
>> +#else
>> +
>> +static inline struct drm_bridge *ps8622_init(struct drm_device *dev,
>> +                               struct drm_encoder *encoder,
>> +                               struct i2c_client *client,
>> +                               struct device_node *node)
>> +{
>> +       return -ENODEV;
>> +}
>> +
>> +#endif
>> +
>> +#endif
>> --
>> 1.7.9.5
>>
>
> Best regards,
> Javier

Regards,
Ajay

[PATCH V4 10/10] drm/exynos: Add ps8622 lvds bridge discovery to DP driver

[Ajay Kumar]

From: Rahul Sharma <Rahul.Sharma@samsung.com>

This patch adds ps8622 lvds bridge discovery code to the dp driver.

Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_dp_core.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 69535f7..87eabe7 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -31,6 +31,7 @@
 #include <drm/drm_panel.h>
 #include <drm/bridge/ptn3460.h>
 #include <drm/bridge/panel_binder.h>
+#include <drm/bridge/ps8622.h>
 
 #include "exynos_drm_drv.h"
 #include "exynos_dp_core.h"
@@ -999,6 +1000,10 @@ static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
 	if (find_bridge("nxp,ptn3460", &bridge)) {
 		bridge_chain = ptn3460_init(dp->drm_dev, encoder, bridge.client,
 								bridge.node);
+	} else if (find_bridge("parade,ps8622", &bridge) ||
+				find_bridge("parade,ps8625", &bridge)) {
+		bridge_chain = ps8622_init(dp->drm_dev, encoder, bridge.client,
+								bridge.node);
 	}
 
 	if (bridge_chain && dp->edp_panel) {
-- 
1.7.9.5

Re: [PATCH V4 10/10] drm/exynos: Add ps8622 lvds bridge discovery to DP driver

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:57 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> From: Rahul Sharma <Rahul.Sharma@samsung.com>
>
> This patch adds ps8622 lvds bridge discovery code to the dp driver.
>
> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos_dp_core.c |    5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
> index 69535f7..87eabe7 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
> @@ -31,6 +31,7 @@
>  #include <drm/drm_panel.h>
>  #include <drm/bridge/ptn3460.h>
>  #include <drm/bridge/panel_binder.h>
> +#include <drm/bridge/ps8622.h>
>
>  #include "exynos_drm_drv.h"
>  #include "exynos_dp_core.h"
> @@ -999,6 +1000,10 @@ static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
>         if (find_bridge("nxp,ptn3460", &bridge)) {
>                 bridge_chain = ptn3460_init(dp->drm_dev, encoder, bridge.client,
>                                                                 bridge.node);
> +       } else if (find_bridge("parade,ps8622", &bridge) ||
> +                               find_bridge("parade,ps8625", &bridge)) {
> +               bridge_chain = ps8622_init(dp->drm_dev, encoder, bridge.client,
> +                                                               bridge.node);
>         }
>
>         if (bridge_chain && dp->edp_panel) {
> --
> 1.7.9.5
>

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Ajay kumar]

ping.

On Wed, Jun 11, 2014 at 11:56 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> This series is based on exynos-drm-next branch of Inki Dae's tree at:
> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
>
> I have tested this after adding few DT changes for exynos5250-snow,
> exynos5420-peach-pit and exynos5800-peach-pi boards.
>
> This patchset also consolidates various inputs from the drm community
> regarding the bridge chaining concept:
> (1) [RFC V2 0/3] drm/bridge: panel and chaining
>         http://www.spinics.net/lists/linux-samsung-soc/msg30160.html
> (2) [RFC V3 0/3] drm/bridge: panel and chaining
>         http://www.spinics.net/lists/linux-samsung-soc/msg30507.html
>
> Changes since V2:
>         -- Address comments from Jingoo Han for ps8622 driver
>         -- Address comments from Daniel, Rob and Thierry regarding
>            bridge chaining
>         -- Address comments from Thierry regarding the names for
>            new drm_panel functions
>
> Changes since V3:
>         -- Remove hotplug based initialization of exynos_dp
>         -- Make exynos_dp work directly with drm_panel, remove
>            dependency on panel_binder
>         -- Minor cleanups in panel_binder and panel_lvds driver
>
> The following patches can be divided into 2 groups:
>         patches 1 to 4: add drm_panel support to exynos_dp(peach-pi)
>         patches 5 to 10: chaining of bridges and drm_panel(snow and peach-pit)
>
> Ajay Kumar (8):
>   [PATCH V4 1/10] drm/exynos: Move DP setup out of hotplug workqueue
>   [PATCH V4 2/10] drm/panel: add prepare and unprepare routines
>   [PATCH V4 3/10] drm/exynos: dp: modify driver to support drm_panel
>   [PATCH V4 4/10] drm/panel: Add driver for lvds/edp based panels
>   [PATCH V4 5/10] drm/bridge: add helper functions to support bridge chain
>   [PATCH V4 6/10] drm/bridge: Add a driver which binds drm_bridge with drm_panel
>   [PATCH V4 7/10] drm/bridge: ptn3460: Support bridge chaining
>   [PATCH V4 8/10] drm/exynos: dp: create bridge chain using ptn3460 and
>                   panel_binder
>
> Vincent Palatin (1):
>   [PATCH V4 9/10] drm/bridge: Add ps8622/ps8625 bridge driver
>
> Rahul Sharma (1):
>   [PATCH V4 10/10] drm/exynos: Add ps8622 lvds bridge discovery to DP driver
>
>  .../devicetree/bindings/drm/bridge/ps8622.txt      |   21 +
>  .../devicetree/bindings/panel/panel-lvds.txt       |   50 +++
>  .../devicetree/bindings/video/exynos_dp.txt        |    2 +
>  drivers/gpu/drm/bridge/Kconfig                     |   15 +
>  drivers/gpu/drm/bridge/Makefile                    |    2 +
>  drivers/gpu/drm/bridge/panel_binder.c              |  193 ++++++++
>  drivers/gpu/drm/bridge/ps8622.c                    |  475 ++++++++++++++++++++
>  drivers/gpu/drm/bridge/ptn3460.c                   |  136 +-----
>  drivers/gpu/drm/exynos/Kconfig                     |    1 +
>  drivers/gpu/drm/exynos/exynos_dp_core.c            |   87 +++-
>  drivers/gpu/drm/exynos/exynos_dp_core.h            |    2 +
>  drivers/gpu/drm/panel/Kconfig                      |   10 +
>  drivers/gpu/drm/panel/Makefile                     |    1 +
>  drivers/gpu/drm/panel/panel-lvds.c                 |  262 +++++++++++
>  include/drm/bridge/panel_binder.h                  |   44 ++
>  include/drm/bridge/ps8622.h                        |   41 ++
>  include/drm/bridge/ptn3460.h                       |   15 +-
>  include/drm/drm_crtc.h                             |   72 +++
>  include/drm/drm_panel.h                            |   18 +
>  19 files changed, 1309 insertions(+), 138 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/drm/bridge/ps8622.txt
>  create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
>  create mode 100644 drivers/gpu/drm/bridge/panel_binder.c
>  create mode 100644 drivers/gpu/drm/bridge/ps8622.c
>  create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
>  create mode 100644 include/drm/bridge/panel_binder.h
>  create mode 100644 include/drm/bridge/ps8622.h
>
> --
> 1.7.9.5
>

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Inki Dae]

2014-06-20 17:06 GMT+09:00 Ajay kumar <ajaynumb@gmail.com>:
> ping.

I will have a review soon but I'm afraid that I cannot have a test yet
because I have no any board with panel based on eDP and LVDS so wait
for until I get a board.
Otherwise, can anyone give me tested-by? and I'd happy to give me
reviewed-by so that I can pick this patch series up.

Thanks,
Inki Dae

>
> On Wed, Jun 11, 2014 at 11:56 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> This series is based on exynos-drm-next branch of Inki Dae's tree at:
>> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
>>
>> I have tested this after adding few DT changes for exynos5250-snow,
>> exynos5420-peach-pit and exynos5800-peach-pi boards.
>>
>> This patchset also consolidates various inputs from the drm community
>> regarding the bridge chaining concept:
>> (1) [RFC V2 0/3] drm/bridge: panel and chaining
>>         http://www.spinics.net/lists/linux-samsung-soc/msg30160.html
>> (2) [RFC V3 0/3] drm/bridge: panel and chaining
>>         http://www.spinics.net/lists/linux-samsung-soc/msg30507.html
>>
>> Changes since V2:
>>         -- Address comments from Jingoo Han for ps8622 driver
>>         -- Address comments from Daniel, Rob and Thierry regarding
>>            bridge chaining
>>         -- Address comments from Thierry regarding the names for
>>            new drm_panel functions
>>
>> Changes since V3:
>>         -- Remove hotplug based initialization of exynos_dp
>>         -- Make exynos_dp work directly with drm_panel, remove
>>            dependency on panel_binder
>>         -- Minor cleanups in panel_binder and panel_lvds driver
>>
>> The following patches can be divided into 2 groups:
>>         patches 1 to 4: add drm_panel support to exynos_dp(peach-pi)
>>         patches 5 to 10: chaining of bridges and drm_panel(snow and peach-pit)
>>
>> Ajay Kumar (8):
>>   [PATCH V4 1/10] drm/exynos: Move DP setup out of hotplug workqueue
>>   [PATCH V4 2/10] drm/panel: add prepare and unprepare routines
>>   [PATCH V4 3/10] drm/exynos: dp: modify driver to support drm_panel
>>   [PATCH V4 4/10] drm/panel: Add driver for lvds/edp based panels
>>   [PATCH V4 5/10] drm/bridge: add helper functions to support bridge chain
>>   [PATCH V4 6/10] drm/bridge: Add a driver which binds drm_bridge with drm_panel
>>   [PATCH V4 7/10] drm/bridge: ptn3460: Support bridge chaining
>>   [PATCH V4 8/10] drm/exynos: dp: create bridge chain using ptn3460 and
>>                   panel_binder
>>
>> Vincent Palatin (1):
>>   [PATCH V4 9/10] drm/bridge: Add ps8622/ps8625 bridge driver
>>
>> Rahul Sharma (1):
>>   [PATCH V4 10/10] drm/exynos: Add ps8622 lvds bridge discovery to DP driver
>>
>>  .../devicetree/bindings/drm/bridge/ps8622.txt      |   21 +
>>  .../devicetree/bindings/panel/panel-lvds.txt       |   50 +++
>>  .../devicetree/bindings/video/exynos_dp.txt        |    2 +
>>  drivers/gpu/drm/bridge/Kconfig                     |   15 +
>>  drivers/gpu/drm/bridge/Makefile                    |    2 +
>>  drivers/gpu/drm/bridge/panel_binder.c              |  193 ++++++++
>>  drivers/gpu/drm/bridge/ps8622.c                    |  475 ++++++++++++++++++++
>>  drivers/gpu/drm/bridge/ptn3460.c                   |  136 +-----
>>  drivers/gpu/drm/exynos/Kconfig                     |    1 +
>>  drivers/gpu/drm/exynos/exynos_dp_core.c            |   87 +++-
>>  drivers/gpu/drm/exynos/exynos_dp_core.h            |    2 +
>>  drivers/gpu/drm/panel/Kconfig                      |   10 +
>>  drivers/gpu/drm/panel/Makefile                     |    1 +
>>  drivers/gpu/drm/panel/panel-lvds.c                 |  262 +++++++++++
>>  include/drm/bridge/panel_binder.h                  |   44 ++
>>  include/drm/bridge/ps8622.h                        |   41 ++
>>  include/drm/bridge/ptn3460.h                       |   15 +-
>>  include/drm/drm_crtc.h                             |   72 +++
>>  include/drm/drm_panel.h                            |   18 +
>>  19 files changed, 1309 insertions(+), 138 deletions(-)
>>  create mode 100644 Documentation/devicetree/bindings/drm/bridge/ps8622.txt
>>  create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
>>  create mode 100644 drivers/gpu/drm/bridge/panel_binder.c
>>  create mode 100644 drivers/gpu/drm/bridge/ps8622.c
>>  create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
>>  create mode 100644 include/drm/bridge/panel_binder.h
>>  create mode 100644 include/drm/bridge/ps8622.h
>>
>> --
>> 1.7.9.5
>>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Rahul Sharma]

Hi Ajay, Inki,

I tested this series for Exynos5420 based peach-pit board,
Exynos5800 based Peach-pi board and Exynos5250 based
Snow board. I verified with the chrome test environment and
able to see upto Login Screen. DPMS on/off functionality and
S2R is also working fine for Display. therefore:

Tested-by: Rahul Sharma <rahul.sharma@samsung.com>

Regards,
Rahul Sharma.

On 20 June 2014 21:21, Inki Dae <inki.dae@samsung.com> wrote:
> 2014-06-20 17:06 GMT+09:00 Ajay kumar <ajaynumb@gmail.com>:
>> ping.
>
> I will have a review soon but I'm afraid that I cannot have a test yet
> because I have no any board with panel based on eDP and LVDS so wait
> for until I get a board.
> Otherwise, can anyone give me tested-by? and I'd happy to give me
> reviewed-by so that I can pick this patch series up.
>
> Thanks,
> Inki Dae
>
>>
>> On Wed, Jun 11, 2014 at 11:56 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>>> This series is based on exynos-drm-next branch of Inki Dae's tree at:
>>> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
>>>
>>> I have tested this after adding few DT changes for exynos5250-snow,
>>> exynos5420-peach-pit and exynos5800-peach-pi boards.
>>>
>>> This patchset also consolidates various inputs from the drm community
>>> regarding the bridge chaining concept:
>>> (1) [RFC V2 0/3] drm/bridge: panel and chaining
>>>         http://www.spinics.net/lists/linux-samsung-soc/msg30160.html
>>> (2) [RFC V3 0/3] drm/bridge: panel and chaining
>>>         http://www.spinics.net/lists/linux-samsung-soc/msg30507.html
>>>
>>> Changes since V2:
>>>         -- Address comments from Jingoo Han for ps8622 driver
>>>         -- Address comments from Daniel, Rob and Thierry regarding
>>>            bridge chaining
>>>         -- Address comments from Thierry regarding the names for
>>>            new drm_panel functions
>>>
>>> Changes since V3:
>>>         -- Remove hotplug based initialization of exynos_dp
>>>         -- Make exynos_dp work directly with drm_panel, remove
>>>            dependency on panel_binder
>>>         -- Minor cleanups in panel_binder and panel_lvds driver
>>>
>>> The following patches can be divided into 2 groups:
>>>         patches 1 to 4: add drm_panel support to exynos_dp(peach-pi)
>>>         patches 5 to 10: chaining of bridges and drm_panel(snow and peach-pit)
>>>
>>> Ajay Kumar (8):
>>>   [PATCH V4 1/10] drm/exynos: Move DP setup out of hotplug workqueue
>>>   [PATCH V4 2/10] drm/panel: add prepare and unprepare routines
>>>   [PATCH V4 3/10] drm/exynos: dp: modify driver to support drm_panel
>>>   [PATCH V4 4/10] drm/panel: Add driver for lvds/edp based panels
>>>   [PATCH V4 5/10] drm/bridge: add helper functions to support bridge chain
>>>   [PATCH V4 6/10] drm/bridge: Add a driver which binds drm_bridge with drm_panel
>>>   [PATCH V4 7/10] drm/bridge: ptn3460: Support bridge chaining
>>>   [PATCH V4 8/10] drm/exynos: dp: create bridge chain using ptn3460 and
>>>                   panel_binder
>>>
>>> Vincent Palatin (1):
>>>   [PATCH V4 9/10] drm/bridge: Add ps8622/ps8625 bridge driver
>>>
>>> Rahul Sharma (1):
>>>   [PATCH V4 10/10] drm/exynos: Add ps8622 lvds bridge discovery to DP driver
>>>
>>>  .../devicetree/bindings/drm/bridge/ps8622.txt      |   21 +
>>>  .../devicetree/bindings/panel/panel-lvds.txt       |   50 +++
>>>  .../devicetree/bindings/video/exynos_dp.txt        |    2 +
>>>  drivers/gpu/drm/bridge/Kconfig                     |   15 +
>>>  drivers/gpu/drm/bridge/Makefile                    |    2 +
>>>  drivers/gpu/drm/bridge/panel_binder.c              |  193 ++++++++
>>>  drivers/gpu/drm/bridge/ps8622.c                    |  475 ++++++++++++++++++++
>>>  drivers/gpu/drm/bridge/ptn3460.c                   |  136 +-----
>>>  drivers/gpu/drm/exynos/Kconfig                     |    1 +
>>>  drivers/gpu/drm/exynos/exynos_dp_core.c            |   87 +++-
>>>  drivers/gpu/drm/exynos/exynos_dp_core.h            |    2 +
>>>  drivers/gpu/drm/panel/Kconfig                      |   10 +
>>>  drivers/gpu/drm/panel/Makefile                     |    1 +
>>>  drivers/gpu/drm/panel/panel-lvds.c                 |  262 +++++++++++
>>>  include/drm/bridge/panel_binder.h                  |   44 ++
>>>  include/drm/bridge/ps8622.h                        |   41 ++
>>>  include/drm/bridge/ptn3460.h                       |   15 +-
>>>  include/drm/drm_crtc.h                             |   72 +++
>>>  include/drm/drm_panel.h                            |   18 +
>>>  19 files changed, 1309 insertions(+), 138 deletions(-)
>>>  create mode 100644 Documentation/devicetree/bindings/drm/bridge/ps8622.txt
>>>  create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
>>>  create mode 100644 drivers/gpu/drm/bridge/panel_binder.c
>>>  create mode 100644 drivers/gpu/drm/bridge/ps8622.c
>>>  create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
>>>  create mode 100644 include/drm/bridge/panel_binder.h
>>>  create mode 100644 include/drm/bridge/ps8622.h
>>>
>>> --
>>> 1.7.9.5
>>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> _______________________________________________
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> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Tomasz Figa]

Hi Rahul,

On 23.06.2014 15:58, Rahul Sharma wrote:
> Hi Ajay, Inki,
> 
> I tested this series for Exynos5420 based peach-pit board,
> Exynos5800 based Peach-pi board and Exynos5250 based
> Snow board. I verified with the chrome test environment and
> able to see upto Login Screen. DPMS on/off functionality and
> S2R is also working fine for Display. therefore:

What tree did you apply this patches onto? I don't see S2R support for
Exynos5420 or 5800 in current linux-next (e.g. there are no PMU tables
present for these SoCs).

Best regards,
Tomasz

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Rahul Sharma]

Hi Tomasz,

On 23 June 2014 20:08, Tomasz Figa <tomasz.figa@gmail.com> wrote:
> Hi Rahul,
>
> On 23.06.2014 15:58, Rahul Sharma wrote:
>> Hi Ajay, Inki,
>>
>> I tested this series for Exynos5420 based peach-pit board,
>> Exynos5800 based Peach-pi board and Exynos5250 based
>> Snow board. I verified with the chrome test environment and
>> able to see upto Login Screen. DPMS on/off functionality and
>> S2R is also working fine for Display. therefore:
>
> What tree did you apply this patches onto? I don't see S2R support for
> Exynos5420 or 5800 in current linux-next (e.g. there are no PMU tables
> present for these SoCs).

I verified them with inflight patches and some private patches. All of them
are available at
https://github.com/exynos-reference/kernel/tree/linux-3.16-rc1-ui-s2r

Regards,
Rahul Sharma.

>
> Best regards,
> Tomasz
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Javier Martinez Canillas]

Hello,

On Fri, Jun 20, 2014 at 5:51 PM, Inki Dae <inki.dae@samsung.com> wrote:
> 2014-06-20 17:06 GMT+09:00 Ajay kumar <ajaynumb@gmail.com>:
>> ping.
>
> I will have a review soon but I'm afraid that I cannot have a test yet
> because I have no any board with panel based on eDP and LVDS so wait
> for until I get a board.
> Otherwise, can anyone give me tested-by? and I'd happy to give me
> reviewed-by so that I can pick this patch series up.
>
> Thanks,
> Inki Dae
>

I've also tested this series on an Exynos5420 Peach pit board and LVDS
display was working for me.

Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>

Best regards,
Javier

>>
>> On Wed, Jun 11, 2014 at 11:56 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>>> This series is based on exynos-drm-next branch of Inki Dae's tree at:
>>> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
>>>
>>> I have tested this after adding few DT changes for exynos5250-snow,
>>> exynos5420-peach-pit and exynos5800-peach-pi boards.
>>>
>>> This patchset also consolidates various inputs from the drm community
>>> regarding the bridge chaining concept:
>>> (1) [RFC V2 0/3] drm/bridge: panel and chaining
>>>         http://www.spinics.net/lists/linux-samsung-soc/msg30160.html
>>> (2) [RFC V3 0/3] drm/bridge: panel and chaining
>>>         http://www.spinics.net/lists/linux-samsung-soc/msg30507.html
>>>
>>> Changes since V2:
>>>         -- Address comments from Jingoo Han for ps8622 driver
>>>         -- Address comments from Daniel, Rob and Thierry regarding
>>>            bridge chaining
>>>         -- Address comments from Thierry regarding the names for
>>>            new drm_panel functions
>>>
>>> Changes since V3:
>>>         -- Remove hotplug based initialization of exynos_dp
>>>         -- Make exynos_dp work directly with drm_panel, remove
>>>            dependency on panel_binder
>>>         -- Minor cleanups in panel_binder and panel_lvds driver
>>>
>>> The following patches can be divided into 2 groups:
>>>         patches 1 to 4: add drm_panel support to exynos_dp(peach-pi)
>>>         patches 5 to 10: chaining of bridges and drm_panel(snow and peach-pit)
>>>
>>> Ajay Kumar (8):
>>>   [PATCH V4 1/10] drm/exynos: Move DP setup out of hotplug workqueue
>>>   [PATCH V4 2/10] drm/panel: add prepare and unprepare routines
>>>   [PATCH V4 3/10] drm/exynos: dp: modify driver to support drm_panel
>>>   [PATCH V4 4/10] drm/panel: Add driver for lvds/edp based panels
>>>   [PATCH V4 5/10] drm/bridge: add helper functions to support bridge chain
>>>   [PATCH V4 6/10] drm/bridge: Add a driver which binds drm_bridge with drm_panel
>>>   [PATCH V4 7/10] drm/bridge: ptn3460: Support bridge chaining
>>>   [PATCH V4 8/10] drm/exynos: dp: create bridge chain using ptn3460 and
>>>                   panel_binder
>>>
>>> Vincent Palatin (1):
>>>   [PATCH V4 9/10] drm/bridge: Add ps8622/ps8625 bridge driver
>>>
>>> Rahul Sharma (1):
>>>   [PATCH V4 10/10] drm/exynos: Add ps8622 lvds bridge discovery to DP driver
>>>
>>>  .../devicetree/bindings/drm/bridge/ps8622.txt      |   21 +
>>>  .../devicetree/bindings/panel/panel-lvds.txt       |   50 +++
>>>  .../devicetree/bindings/video/exynos_dp.txt        |    2 +
>>>  drivers/gpu/drm/bridge/Kconfig                     |   15 +
>>>  drivers/gpu/drm/bridge/Makefile                    |    2 +
>>>  drivers/gpu/drm/bridge/panel_binder.c              |  193 ++++++++
>>>  drivers/gpu/drm/bridge/ps8622.c                    |  475 ++++++++++++++++++++
>>>  drivers/gpu/drm/bridge/ptn3460.c                   |  136 +-----
>>>  drivers/gpu/drm/exynos/Kconfig                     |    1 +
>>>  drivers/gpu/drm/exynos/exynos_dp_core.c            |   87 +++-
>>>  drivers/gpu/drm/exynos/exynos_dp_core.h            |    2 +
>>>  drivers/gpu/drm/panel/Kconfig                      |   10 +
>>>  drivers/gpu/drm/panel/Makefile                     |    1 +
>>>  drivers/gpu/drm/panel/panel-lvds.c                 |  262 +++++++++++
>>>  include/drm/bridge/panel_binder.h                  |   44 ++
>>>  include/drm/bridge/ps8622.h                        |   41 ++
>>>  include/drm/bridge/ptn3460.h                       |   15 +-
>>>  include/drm/drm_crtc.h                             |   72 +++
>>>  include/drm/drm_panel.h                            |   18 +
>>>  19 files changed, 1309 insertions(+), 138 deletions(-)
>>>  create mode 100644 Documentation/devicetree/bindings/drm/bridge/ps8622.txt
>>>  create mode 100644 Documentation/devicetree/bindings/panel/panel-lvds.txt
>>>  create mode 100644 drivers/gpu/drm/bridge/panel_binder.c
>>>  create mode 100644 drivers/gpu/drm/bridge/ps8622.c
>>>  create mode 100644 drivers/gpu/drm/panel/panel-lvds.c
>>>  create mode 100644 include/drm/bridge/panel_binder.h
>>>  create mode 100644 include/drm/bridge/ps8622.h
>>>
>>> --
>>> 1.7.9.5
>>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> --
> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Andreas Färber]

Hi Ajay,

Thanks a lot for your work on this.

Am 11.06.2014 20:26, schrieb Ajay Kumar:
> This series is based on exynos-drm-next branch of Inki Dae's tree at:
> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
> 
> I have tested this after adding few DT changes for exynos5250-snow,
> exynos5420-peach-pit and exynos5800-peach-pi boards.

Unfortunately this series per se does not yet fix my display issues on
the Spring Chromebook. Can you share what dt changes you made for Snow?

Before, if the dp-controller dt node was present, I would get a dark
screen immediately and I could ssh into the system shortly after.
I worked around that by commenting the node out, which would allow me to
graphically boot pretty much instantly.

With these 10 patches applied on top of my dt on top of kgene's tree,
the last U-Boot screen stays visible for ~50 seconds, then the screen
goes blank, and I can ssh in some time later.
If I comment out the dp-controller node again, it takes long for the
kernel boot to graphically proceed but works okay then.
In both cases there's a gap of ~2900 seconds visible in dmesg.

Is presence of a framebuffer dt node or U-Boot not disabling FIMD
interfering here, i.e. do I need to replace nv U-Boot? Or do I need to
cherry-pick any preparatory patches from exynos-drm-next?

I'm building with LPAE, but the only two warnings in drm code I see are
about a NULL cast to dma_addr_t and a %x in debug code, which I consider
non-critical (but would be nice if Inki could silence them).

Regards,
Andreas

https://github.com/afaerber/linux/commits/spring-next
https://github.com/afaerber/u-boot/commits/spring

w/ dp-controller:

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 3.16.0-rc2+ (andreas@chrome11.site) (gcc
version 4.
8.2 20140404 [gcc-4_8-branch revision 209122] (SUSE Linux) ) #8 SMP
PREEMPT Thu
Jul 3 05:56:13 CEST 2014
[    0.000000] CPU: ARMv7 Processor [410fc0f4] revision 4 (ARMv7),
cr=30c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction
cache
[    0.000000] Machine model: Google Spring
[    0.000000] Forcing write-allocate cache policy for SMP
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] On node 0 totalpages: 523264
[    0.000000] free_area_init_node: node 0, pgdat c0659dc0, node_mem_map
ee7fc00
0
[    0.000000]   Normal zone: 1520 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 194560 pages, LIFO batch:31
[    0.000000]   HighMem zone: 2568 pages used for memmap
[    0.000000]   HighMem zone: 328704 pages, LIFO batch:31
[    0.000000] PERCPU: Embedded 7 pages/cpu @ee7bb000 s7104 r8192 d13376
u32768
[    0.000000] pcpu-alloc: s7104 r8192 d13376 u32768 alloc=8*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pag
es: 521744
[    0.000000] Kernel command line: console=tty1 root=/dev/sda3
rootfstype=ext4
rw rootwait clk_ignore_unused
[    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288
bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144
bytes)
[    0.000000] Memory: 2068780K/2093056K available (4454K kernel code,
258K rwdata, 1480K rodata, 278K init, 281K bss, 24276K reserved,
1314816K highmem)
[    0.000000] Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xffc00000 - 0xffe00000   (2048 kB)
    vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
    lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
    pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
    modules : 0xbf000000 - 0xbfe00000   (  14 MB)
      .text : 0xc0008000 - 0xc05d3dd4   (5936 kB)
      .init : 0xc05d4000 - 0xc0619bc0   ( 279 kB)
      .data : 0xc061a000 - 0xc065a9e0   ( 259 kB)
       .bss : 0xc065a9ec - 0xc06a1080   ( 282 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[    0.000000] Preemptible hierarchical RCU implementation.
[    0.000000]  RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] L2C: failed to init: -19
[    0.000000] Exynos5250: clock setup completed, armclk=1700000000
[    0.000000] Architected cp15 timer(s) running at 24.00MHz (virt).
[    0.000002] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps
every 2863311519744ns
[    0.000007] Switching to timer-based delay loop
[ 2869.295699] sched_clock: 64 bits at 24MHz, resolution 41ns, wraps
every 2863311519744ns
[ 2869.295841] Console: colour dummy device 80x30
[ 2869.296042] console [tty1] enabled
[ 2869.296056] Calibrating delay loop (skipped), value calculated using
timer frequency.. 48.00 BogoMIPS (lpj=120000)
[ 2869.296073] pid_max: default: 32768 minimum: 301
[ 2869.296160] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 2869.296171] Mountpoint-cache hash table entries: 2048 (order: 1, 8192
bytes)
[ 2869.296520] CPU: Testing write buffer coherency: ok
[ 2869.296649] CPU0: update cpu_capacity 1024
[ 2869.296660] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 2869.296757] Setting up static identity map for 0x4043c0d8 - 0x4043c130
[ 2920.607940] CPU1: Booted secondary processor
[ 2920.607972] CPU1: update cpu_capacity 1024
[ 2920.607976] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 2920.608020] Brought up 2 CPUs
[...]

w/o dp-controller:

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 3.16.0-rc2+ (andreas@chrome11.site) (gcc
version 4.8.2 20140404 [gcc-4_8-branch revision 209122] (SUSE Linux) )
#8 SMP PREEMPT Thu Jul 3 05:56:13 CEST 2014
[    0.000000] CPU: ARMv7 Processor [410fc0f4] revision 4 (ARMv7),
cr=30c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction
cache
[    0.000000] Machine model: Google Spring
[    0.000000] Forcing write-allocate cache policy for SMP
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] On node 0 totalpages: 523264
[    0.000000] free_area_init_node: node 0, pgdat c0659dc0, node_mem_map
ee7fc000
[    0.000000]   Normal zone: 1520 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 194560 pages, LIFO batch:31
[    0.000000]   HighMem zone: 2568 pages used for memmap
[    0.000000]   HighMem zone: 328704 pages, LIFO batch:31
[    0.000000] PERCPU: Embedded 7 pages/cpu @ee7bc000 s7104 r8192 d13376
u32768
[    0.000000] pcpu-alloc: s7104 r8192 d13376 u32768 alloc=8*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 521744
[    0.000000] Kernel command line: console=tty1 root=/dev/sda3
rootfstype=ext4 rw rootwait clk_ignore_unused
[    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288
bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144
bytes)
[    0.000000] Memory: 2068784K/2093056K available (4454K kernel code,
258K rwdata, 1480K rodata, 278K init, 281K bss, 24272K reserved,
1314816K highmem)
[    0.000000] Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xffc00000 - 0xffe00000   (2048 kB)
    vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
    lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
    pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
    modules : 0xbf000000 - 0xbfe00000   (  14 MB)
      .text : 0xc0008000 - 0xc05d3dd4   (5936 kB)
      .init : 0xc05d4000 - 0xc0619bc0   ( 279 kB)
      .data : 0xc061a000 - 0xc065a9e0   ( 259 kB)
       .bss : 0xc065a9ec - 0xc06a1080   ( 282 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[    0.000000] Preemptible hierarchical RCU implementation.
[    0.000000]  RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] L2C: failed to init: -19
[    0.000000] Exynos5250: clock setup completed, armclk=1700000000
[    0.000000] Architected cp15 timer(s) running at 24.00MHz (virt).
[    0.000003] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps
every 2863311519744ns
[    0.000007] Switching to timer-based delay loop
[ 2870.975122] sched_clock: 64 bits at 24MHz, resolution 41ns, wraps
every 2863311519744ns
[ 2870.975267] Console: colour dummy device 80x30
[ 2870.975468] console [tty1] enabled
[ 2870.975482] Calibrating delay loop (skipped), value calculated using
timer frequency.. 48.00 BogoMIPS (lpj=120000)
[ 2870.975499] pid_max: default: 32768 minimum: 301
[ 2870.975587] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 2870.975598] Mountpoint-cache hash table entries: 2048 (order: 1, 8192
bytes)
[ 2870.975950] CPU: Testing write buffer coherency: ok
[ 2870.976081] CPU0: update cpu_capacity 1024
[ 2870.976092] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 2870.976188] Setting up static identity map for 0x4043c0d8 - 0x4043c130
[ 2920.607946] CPU1: Booted secondary processor
[ 2920.607979] CPU1: update cpu_capacity 1024
[ 2920.607983] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 2920.608027] Brought up 2 CPUs
[...]

-- 
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Ajay kumar]

[-- Attachment #1: Type: text/plain, Size: 10590 bytes --]

Hi Andreas,

On Thu, Jul 3, 2014 at 10:49 AM, Andreas Färber <afaerber@suse.de> wrote:
> Hi Ajay,
>
> Thanks a lot for your work on this.
>
> Am 11.06.2014 20:26, schrieb Ajay Kumar:
>> This series is based on exynos-drm-next branch of Inki Dae's tree at:
>> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
>>
>> I have tested this after adding few DT changes for exynos5250-snow,
>> exynos5420-peach-pit and exynos5800-peach-pi boards.
>
> Unfortunately this series per se does not yet fix my display issues on
> the Spring Chromebook. Can you share what dt changes you made for Snow?
>
> Before, if the dp-controller dt node was present, I would get a dark
> screen immediately and I could ssh into the system shortly after.
> I worked around that by commenting the node out, which would allow me to
> graphically boot pretty much instantly.
>
> With these 10 patches applied on top of my dt on top of kgene's tree,
> the last U-Boot screen stays visible for ~50 seconds, then the screen
> goes blank, and I can ssh in some time later.
> If I comment out the dp-controller node again, it takes long for the
> kernel boot to graphically proceed but works okay then.
> In both cases there's a gap of ~2900 seconds visible in dmesg.
>
> Is presence of a framebuffer dt node or U-Boot not disabling FIMD
> interfering here, i.e. do I need to replace nv U-Boot? Or do I need to
> cherry-pick any preparatory patches from exynos-drm-next?
>
> I'm building with LPAE, but the only two warnings in drm code I see are
> about a NULL cast to dma_addr_t and a %x in debug code, which I consider
> non-critical (but would be nice if Inki could silence them).
>
> Regards,
> Andreas
>
> https://github.com/afaerber/linux/commits/spring-next
> https://github.com/afaerber/u-boot/commits/spring
You need to add bridge chip node and panel node to use my patch series.
Also, to support that you need to enable tps65090 regulator on spring.

I have attached a patch which adds the bridge chip node and panel node.
Also, I have attached a sample config which I used to compile the kernel.

Doug can help you in adding changes required for tps65090.

Regards,
Ajay Kumar

> w/ dp-controller:
>
> [    0.000000] Booting Linux on physical CPU 0x0
> [    0.000000] Linux version 3.16.0-rc2+ (andreas@chrome11.site) (gcc
> version 4.
> 8.2 20140404 [gcc-4_8-branch revision 209122] (SUSE Linux) ) #8 SMP
> PREEMPT Thu
> Jul 3 05:56:13 CEST 2014
> [    0.000000] CPU: ARMv7 Processor [410fc0f4] revision 4 (ARMv7),
> cr=30c5387d
> [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction
> cache
> [    0.000000] Machine model: Google Spring
> [    0.000000] Forcing write-allocate cache policy for SMP
> [    0.000000] Memory policy: Data cache writealloc
> [    0.000000] On node 0 totalpages: 523264
> [    0.000000] free_area_init_node: node 0, pgdat c0659dc0, node_mem_map
> ee7fc00
> 0
> [    0.000000]   Normal zone: 1520 pages used for memmap
> [    0.000000]   Normal zone: 0 pages reserved
> [    0.000000]   Normal zone: 194560 pages, LIFO batch:31
> [    0.000000]   HighMem zone: 2568 pages used for memmap
> [    0.000000]   HighMem zone: 328704 pages, LIFO batch:31
> [    0.000000] PERCPU: Embedded 7 pages/cpu @ee7bb000 s7104 r8192 d13376
> u32768
> [    0.000000] pcpu-alloc: s7104 r8192 d13376 u32768 alloc=8*4096
> [    0.000000] pcpu-alloc: [0] 0 [0] 1
> [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.
> Total pag
> es: 521744
> [    0.000000] Kernel command line: console=tty1 root=/dev/sda3
> rootfstype=ext4
> rw rootwait clk_ignore_unused
> [    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
> [    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288
> bytes)
> [    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144
> bytes)
> [    0.000000] Memory: 2068780K/2093056K available (4454K kernel code,
> 258K rwdata, 1480K rodata, 278K init, 281K bss, 24276K reserved,
> 1314816K highmem)
> [    0.000000] Virtual kernel memory layout:
>     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
>     fixmap  : 0xffc00000 - 0xffe00000   (2048 kB)
>     vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
>     lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
>     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
>     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
>       .text : 0xc0008000 - 0xc05d3dd4   (5936 kB)
>       .init : 0xc05d4000 - 0xc0619bc0   ( 279 kB)
>       .data : 0xc061a000 - 0xc065a9e0   ( 259 kB)
>        .bss : 0xc065a9ec - 0xc06a1080   ( 282 kB)
> [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
> [    0.000000] Preemptible hierarchical RCU implementation.
> [    0.000000]  RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
> [    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
> [    0.000000] NR_IRQS:16 nr_irqs:16 16
> [    0.000000] L2C: failed to init: -19
> [    0.000000] Exynos5250: clock setup completed, armclk=1700000000
> [    0.000000] Architected cp15 timer(s) running at 24.00MHz (virt).
> [    0.000002] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps
> every 2863311519744ns
> [    0.000007] Switching to timer-based delay loop
> [ 2869.295699] sched_clock: 64 bits at 24MHz, resolution 41ns, wraps
> every 2863311519744ns
> [ 2869.295841] Console: colour dummy device 80x30
> [ 2869.296042] console [tty1] enabled
> [ 2869.296056] Calibrating delay loop (skipped), value calculated using
> timer frequency.. 48.00 BogoMIPS (lpj=120000)
> [ 2869.296073] pid_max: default: 32768 minimum: 301
> [ 2869.296160] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
> [ 2869.296171] Mountpoint-cache hash table entries: 2048 (order: 1, 8192
> bytes)
> [ 2869.296520] CPU: Testing write buffer coherency: ok
> [ 2869.296649] CPU0: update cpu_capacity 1024
> [ 2869.296660] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
> [ 2869.296757] Setting up static identity map for 0x4043c0d8 - 0x4043c130
> [ 2920.607940] CPU1: Booted secondary processor
> [ 2920.607972] CPU1: update cpu_capacity 1024
> [ 2920.607976] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
> [ 2920.608020] Brought up 2 CPUs
> [...]
>
> w/o dp-controller:
>
> [    0.000000] Booting Linux on physical CPU 0x0
> [    0.000000] Linux version 3.16.0-rc2+ (andreas@chrome11.site) (gcc
> version 4.8.2 20140404 [gcc-4_8-branch revision 209122] (SUSE Linux) )
> #8 SMP PREEMPT Thu Jul 3 05:56:13 CEST 2014
> [    0.000000] CPU: ARMv7 Processor [410fc0f4] revision 4 (ARMv7),
> cr=30c5387d
> [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction
> cache
> [    0.000000] Machine model: Google Spring
> [    0.000000] Forcing write-allocate cache policy for SMP
> [    0.000000] Memory policy: Data cache writealloc
> [    0.000000] On node 0 totalpages: 523264
> [    0.000000] free_area_init_node: node 0, pgdat c0659dc0, node_mem_map
> ee7fc000
> [    0.000000]   Normal zone: 1520 pages used for memmap
> [    0.000000]   Normal zone: 0 pages reserved
> [    0.000000]   Normal zone: 194560 pages, LIFO batch:31
> [    0.000000]   HighMem zone: 2568 pages used for memmap
> [    0.000000]   HighMem zone: 328704 pages, LIFO batch:31
> [    0.000000] PERCPU: Embedded 7 pages/cpu @ee7bc000 s7104 r8192 d13376
> u32768
> [    0.000000] pcpu-alloc: s7104 r8192 d13376 u32768 alloc=8*4096
> [    0.000000] pcpu-alloc: [0] 0 [0] 1
> [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.
> Total pages: 521744
> [    0.000000] Kernel command line: console=tty1 root=/dev/sda3
> rootfstype=ext4 rw rootwait clk_ignore_unused
> [    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
> [    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288
> bytes)
> [    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144
> bytes)
> [    0.000000] Memory: 2068784K/2093056K available (4454K kernel code,
> 258K rwdata, 1480K rodata, 278K init, 281K bss, 24272K reserved,
> 1314816K highmem)
> [    0.000000] Virtual kernel memory layout:
>     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
>     fixmap  : 0xffc00000 - 0xffe00000   (2048 kB)
>     vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
>     lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
>     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
>     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
>       .text : 0xc0008000 - 0xc05d3dd4   (5936 kB)
>       .init : 0xc05d4000 - 0xc0619bc0   ( 279 kB)
>       .data : 0xc061a000 - 0xc065a9e0   ( 259 kB)
>        .bss : 0xc065a9ec - 0xc06a1080   ( 282 kB)
> [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
> [    0.000000] Preemptible hierarchical RCU implementation.
> [    0.000000]  RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
> [    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
> [    0.000000] NR_IRQS:16 nr_irqs:16 16
> [    0.000000] L2C: failed to init: -19
> [    0.000000] Exynos5250: clock setup completed, armclk=1700000000
> [    0.000000] Architected cp15 timer(s) running at 24.00MHz (virt).
> [    0.000003] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps
> every 2863311519744ns
> [    0.000007] Switching to timer-based delay loop
> [ 2870.975122] sched_clock: 64 bits at 24MHz, resolution 41ns, wraps
> every 2863311519744ns
> [ 2870.975267] Console: colour dummy device 80x30
> [ 2870.975468] console [tty1] enabled
> [ 2870.975482] Calibrating delay loop (skipped), value calculated using
> timer frequency.. 48.00 BogoMIPS (lpj=120000)
> [ 2870.975499] pid_max: default: 32768 minimum: 301
> [ 2870.975587] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
> [ 2870.975598] Mountpoint-cache hash table entries: 2048 (order: 1, 8192
> bytes)
> [ 2870.975950] CPU: Testing write buffer coherency: ok
> [ 2870.976081] CPU0: update cpu_capacity 1024
> [ 2870.976092] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
> [ 2870.976188] Setting up static identity map for 0x4043c0d8 - 0x4043c130
> [ 2920.607946] CPU1: Booted secondary processor
> [ 2920.607979] CPU1: update cpu_capacity 1024
> [ 2920.607983] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
> [ 2920.608027] Brought up 2 CPUs
> [...]
>
> --
> SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
> GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg

[-- Attachment #2: 0001-ARM-dts-Add-ps8622-and-panel-node-for-spring.patch --]
[-- Type: application/octet-stream, Size: 2540 bytes --]

From 4b0b01c8c52229b09b065d47de005304917d7f44 Mon Sep 17 00:00:00 2001
From: Ajay Kumar <ajaykumar.rs@samsung.com>
Date: Thu, 3 Jul 2014 20:15:59 +0530
Subject: [PATCH] ARM: dts: Add ps8622 and panel node for spring

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
 arch/arm/boot/dts/exynos5250-spring.dts | 57 ++++++++++++++++++++++++---------
 1 file changed, 42 insertions(+), 15 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5250-spring.dts b/arch/arm/boot/dts/exynos5250-spring.dts
index 92efe36..e07fbaa 100644
--- a/arch/arm/boot/dts/exynos5250-spring.dts
+++ b/arch/arm/boot/dts/exynos5250-spring.dts
@@ -64,23 +64,13 @@
 		vdd_pll-supply = <&s5m_ldo8_reg>;
 	};
 
-/*
-	dp-controller@145B0000 {
-		status = "okay";
-		pinctrl-names = "default";
-		pinctrl-0 = <&dp_hpd>;
-		samsung,color-space = <0>;
-		samsung,dynamic-range = <0>;
-		samsung,ycbcr-coeff = <0>;
-		samsung,color-depth = <1>;
-		samsung,link-rate = <0x0a>;
-		samsung,lane-count = <1>;
-		samsung,hpd-gpio = <&gpc3 0 0>;
+	panel_lvds: panel-lvds {
+		compatible = "panel-lvds";
 
 		display-timings {
-			native-mode = <&timing1>;
+			native-mode = <&timing0>;
 
-			timing1: timing@1 {
+			timing0: timing@0 {
 				clock-frequency = <70589280>;
 				hactive = <1366>;
 				vactive = <768>;
@@ -93,7 +83,20 @@
 			};
 		};
 	};
-*/
+
+	dp-controller@145B0000 {
+		status = "okay";
+		pinctrl-names = "default";
+		pinctrl-0 = <&dp_hpd_gpio>;
+		samsung,color-space = <0>;
+		samsung,dynamic-range = <0>;
+		samsung,ycbcr-coeff = <0>;
+		samsung,color-depth = <1>;
+		samsung,link-rate = <0x0a>;
+		samsung,lane-count = <1>;
+		samsung,hpd-gpio = <&gpc3 0 0>;
+		edp-panel = <&panel_lvds>;
+	};
 
 	fixed-rate-clocks {
 		xxti {
@@ -405,6 +408,16 @@
 	status = "okay";
 	samsung,i2c-sda-delay = <100>;
 	samsung,i2c-max-bus-freq = <66000>;
+
+	ps8622-bridge@20 {
+		compatible = "parade,ps8622";
+		reg = <0x08>;
+		sleep-gpio = <&gpc3 6 0>;
+		reset-gpio = <&gpc3 1 0>;
+		lane-count = <1>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&ps8622_gpios>;
+	};
 };
 
 &i2c_8 {
@@ -468,6 +481,20 @@
 		samsung,pin-pud = <0>;
 	};
 
+	dp_hpd_gpio: dp-hpd {
+		samsung,pins = "gpc3-0";
+		samsung,pin-function = <0>;
+		samsung,pin-pud = <3>;
+		samsung,pin-drv = <0>;
+	};
+
+	ps8622_gpios: ps8622-gpios {
+		samsung,pins = "gpc3-1", "gpc3-6";
+		samsung,pin-function = <1>;
+		samsung,pin-pud = <0>;
+		samsung,pin-drv = <0>;
+	};
+
 	s5m8767_dvs: s5m8767-dvs {
 		samsung,pins = "gpd1-0", "gpd1-1", "gpd1-2";
 		samsung,pin-function = <0>;
-- 
1.8.3.2


[-- Attachment #3: config-3.16.0-rc2+ --]
[-- Type: application/octet-stream, Size: 101162 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/arm 3.16.0-rc2 Kernel Configuration
#
CONFIG_ARM=y
CONFIG_ARM_HAS_SG_CHAIN=y
CONFIG_MIGHT_HAVE_PCI=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_NO_IOPORT_MAP=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_ARCH_HAS_BANDGAP=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_GENERIC_BUG=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_IRQ_WORK=y
CONFIG_BUILDTIME_EXTABLE_SORT=y

#
# General setup
#
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
# CONFIG_COMPILE_TEST is not set
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_HOSTNAME="localhost"
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
# CONFIG_POSIX_MQUEUE is not set
CONFIG_CROSS_MEMORY_ATTACH=y
# CONFIG_FHANDLE is not set
CONFIG_USELIB=y
# CONFIG_AUDIT is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_IRQ_DOMAIN=y
# CONFIG_IRQ_DOMAIN_DEBUG is not set
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
CONFIG_KTIME_SCALAR=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_ARCH_HAS_TICK_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y

#
# Timers subsystem
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
# CONFIG_NO_HZ_FULL is not set
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_PREEMPT_RCU is not set
CONFIG_RCU_STALL_COMMON=y
# CONFIG_RCU_USER_QS is not set
CONFIG_RCU_FANOUT=32
CONFIG_RCU_FANOUT_LEAF=16
# CONFIG_RCU_FANOUT_EXACT is not set
# CONFIG_RCU_FAST_NO_HZ is not set
# CONFIG_TREE_RCU_TRACE is not set
# CONFIG_RCU_NOCB_CPU is not set
CONFIG_IKCONFIG=m
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=18
CONFIG_GENERIC_SCHED_CLOCK=y
CONFIG_CGROUPS=y
# CONFIG_CGROUP_DEBUG is not set
CONFIG_CGROUP_FREEZER=y
# CONFIG_CGROUP_DEVICE is not set
# CONFIG_CPUSETS is not set
# CONFIG_CGROUP_CPUACCT is not set
# CONFIG_RESOURCE_COUNTERS is not set
# CONFIG_CGROUP_PERF is not set
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
CONFIG_CFS_BANDWIDTH=y
# CONFIG_RT_GROUP_SCHED is not set
# CONFIG_BLK_CGROUP is not set
# CONFIG_CHECKPOINT_RESTORE is not set
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_NET_NS=y
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_SYSFS_DEPRECATED is not set
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
# CONFIG_RD_BZIP2 is not set
# CONFIG_RD_LZMA is not set
CONFIG_RD_XZ=y
# CONFIG_RD_LZO is not set
# CONFIG_RD_LZ4 is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_HAVE_UID16=y
CONFIG_EXPERT=y
CONFIG_UID16=y
# CONFIG_SGETMASK_SYSCALL is not set
CONFIG_SYSFS_SYSCALL=y
# CONFIG_SYSCTL_SYSCALL is not set
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_EMBEDDED=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_COMPAT_BRK is not set
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
CONFIG_SLUB_CPU_PARTIAL=y
# CONFIG_SYSTEM_TRUSTED_KEYRING is not set
CONFIG_PROFILING=y
CONFIG_TRACEPOINTS=y
# CONFIG_OPROFILE is not set
CONFIG_HAVE_OPROFILE=y
# CONFIG_KPROBES is not set
# CONFIG_JUMP_LABEL is not set
# CONFIG_UPROBES is not set
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_SECCOMP_FILTER=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR is not set
CONFIG_CC_STACKPROTECTOR_NONE=y
# CONFIG_CC_STACKPROTECTOR_REGULAR is not set
# CONFIG_CC_STACKPROTECTOR_STRONG is not set
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OLD_SIGACTION=y

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
CONFIG_STOP_MACHINE=y
CONFIG_BLOCK=y
CONFIG_LBDAF=y
CONFIG_BLK_DEV_BSG=y
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_CMDLINE_PARSER is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_AIX_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
# CONFIG_ATARI_PARTITION is not set
# CONFIG_MAC_PARTITION is not set
CONFIG_MSDOS_PARTITION=y
# CONFIG_BSD_DISKLABEL is not set
# CONFIG_MINIX_SUBPARTITION is not set
# CONFIG_SOLARIS_X86_PARTITION is not set
# CONFIG_UNIXWARE_DISKLABEL is not set
# CONFIG_LDM_PARTITION is not set
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
# CONFIG_SUN_PARTITION is not set
# CONFIG_KARMA_PARTITION is not set
CONFIG_EFI_PARTITION=y
# CONFIG_SYSV68_PARTITION is not set
# CONFIG_CMDLINE_PARTITION is not set

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="cfq"
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_FREEZER=y

#
# System Type
#
CONFIG_MMU=y
CONFIG_ARCH_MULTIPLATFORM=y
# CONFIG_ARCH_INTEGRATOR is not set
# CONFIG_ARCH_REALVIEW is not set
# CONFIG_ARCH_VERSATILE is not set
# CONFIG_ARCH_AT91 is not set
# CONFIG_ARCH_CLPS711X is not set
# CONFIG_ARCH_GEMINI is not set
# CONFIG_ARCH_EBSA110 is not set
# CONFIG_ARCH_EP93XX is not set
# CONFIG_ARCH_FOOTBRIDGE is not set
# CONFIG_ARCH_NETX is not set
# CONFIG_ARCH_IOP13XX is not set
# CONFIG_ARCH_IOP32X is not set
# CONFIG_ARCH_IOP33X is not set
# CONFIG_ARCH_IXP4XX is not set
# CONFIG_ARCH_DOVE is not set
# CONFIG_ARCH_KIRKWOOD is not set
# CONFIG_ARCH_MV78XX0 is not set
# CONFIG_ARCH_ORION5X is not set
# CONFIG_ARCH_MMP is not set
# CONFIG_ARCH_KS8695 is not set
# CONFIG_ARCH_W90X900 is not set
# CONFIG_ARCH_LPC32XX is not set
# CONFIG_ARCH_PXA is not set
# CONFIG_ARCH_MSM is not set
# CONFIG_ARCH_SHMOBILE_LEGACY is not set
# CONFIG_ARCH_RPC is not set
# CONFIG_ARCH_SA1100 is not set
# CONFIG_ARCH_S3C24XX is not set
# CONFIG_ARCH_S3C64XX is not set
# CONFIG_ARCH_S5PV210 is not set
# CONFIG_ARCH_DAVINCI is not set
# CONFIG_ARCH_OMAP1 is not set

#
# Multiple platform selection
#

#
# CPU Core family selection
#
# CONFIG_ARCH_MULTI_V6 is not set
CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_MULTI_V6_V7=y
# CONFIG_ARCH_MULTI_CPU_AUTO is not set
# CONFIG_ARCH_VIRT is not set
# CONFIG_ARCH_MVEBU is not set
# CONFIG_ARCH_BCM is not set
# CONFIG_ARCH_BERLIN is not set
# CONFIG_ARCH_HIGHBANK is not set
# CONFIG_ARCH_HI3xxx is not set
# CONFIG_ARCH_KEYSTONE is not set
# CONFIG_ARCH_MXC is not set

#
# TI OMAP/AM/DM/DRA Family
#
# CONFIG_ARCH_OMAP3 is not set
# CONFIG_ARCH_OMAP4 is not set
# CONFIG_SOC_OMAP5 is not set
# CONFIG_SOC_AM33XX is not set
# CONFIG_SOC_AM43XX is not set
# CONFIG_SOC_DRA7XX is not set
# CONFIG_ARCH_QCOM is not set
# CONFIG_ARCH_ROCKCHIP is not set
# CONFIG_ARCH_SOCFPGA is not set
# CONFIG_PLAT_SPEAR is not set
# CONFIG_ARCH_STI is not set
CONFIG_ARCH_EXYNOS=y
# CONFIG_ARCH_EXYNOS3 is not set
# CONFIG_ARCH_EXYNOS4 is not set
CONFIG_ARCH_EXYNOS5=y

#
# EXYNOS SoCs
#
CONFIG_SOC_EXYNOS5250=y
CONFIG_SOC_EXYNOS5260=y
CONFIG_SOC_EXYNOS5410=y
CONFIG_SOC_EXYNOS5420=y
# CONFIG_SOC_EXYNOS5440 is not set
CONFIG_SOC_EXYNOS5800=y
CONFIG_EXYNOS5420_MCPM=y
CONFIG_PLAT_SAMSUNG=y

#
# Samsung Common options
#

#
# Boot options
#
CONFIG_S5P_DEV_MFC=y

#
# Power management
#
# CONFIG_SAMSUNG_PM_CHECK is not set
CONFIG_DEBUG_S3C_UART=3
# CONFIG_ARCH_SHMOBILE_MULTI is not set
# CONFIG_ARCH_SUNXI is not set
# CONFIG_ARCH_SIRF is not set
# CONFIG_ARCH_TEGRA is not set
# CONFIG_ARCH_U8500 is not set
# CONFIG_ARCH_VEXPRESS is not set
# CONFIG_ARCH_WM8850 is not set
# CONFIG_ARCH_ZYNQ is not set

#
# Processor Type
#
CONFIG_CPU_V7=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_32v7=y
CONFIG_CPU_ABRT_EV7=y
CONFIG_CPU_PABRT_V7=y
CONFIG_CPU_CACHE_V7=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_TLB_V7=y
CONFIG_CPU_HAS_ASID=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y

#
# Processor Features
#
# CONFIG_ARM_LPAE is not set
# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
CONFIG_ARM_THUMB=y
CONFIG_ARM_THUMBEE=y
CONFIG_ARM_VIRT_EXT=y
CONFIG_SWP_EMULATE=y
# CONFIG_CPU_ICACHE_DISABLE is not set
# CONFIG_CPU_DCACHE_DISABLE is not set
# CONFIG_CPU_BPREDICT_DISABLE is not set
CONFIG_KUSER_HELPERS=y
CONFIG_MIGHT_HAVE_CACHE_L2X0=y
# CONFIG_CACHE_L2X0 is not set
CONFIG_ARM_L1_CACHE_SHIFT_6=y
CONFIG_ARM_L1_CACHE_SHIFT=6
CONFIG_ARM_DMA_MEM_BUFFERABLE=y
CONFIG_MULTI_IRQ_HANDLER=y
# CONFIG_ARM_ERRATA_430973 is not set
# CONFIG_ARM_ERRATA_643719 is not set
# CONFIG_ARM_ERRATA_720789 is not set
# CONFIG_ARM_ERRATA_754322 is not set
# CONFIG_ARM_ERRATA_754327 is not set
# CONFIG_ARM_ERRATA_764369 is not set
# CONFIG_ARM_ERRATA_775420 is not set
CONFIG_ARM_ERRATA_798181=y
CONFIG_ARM_ERRATA_773022=y

#
# Bus support
#
CONFIG_ARM_AMBA=y
# CONFIG_PCI is not set
# CONFIG_PCI_SYSCALL is not set
# CONFIG_PCCARD is not set

#
# Kernel Features
#
CONFIG_HAVE_SMP=y
CONFIG_SMP=y
CONFIG_SMP_ON_UP=y
CONFIG_ARM_CPU_TOPOLOGY=y
# CONFIG_SCHED_MC is not set
# CONFIG_SCHED_SMT is not set
CONFIG_HAVE_ARM_SCU=y
# CONFIG_HAVE_ARM_ARCH_TIMER is not set
CONFIG_MCPM=y
CONFIG_BIG_LITTLE=y
CONFIG_BL_SWITCHER=y
CONFIG_BL_SWITCHER_DUMMY_IF=y
CONFIG_VMSPLIT_3G=y
# CONFIG_VMSPLIT_2G is not set
# CONFIG_VMSPLIT_1G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_NR_CPUS=8
CONFIG_HOTPLUG_CPU=y
# CONFIG_ARM_PSCI is not set
CONFIG_ARCH_NR_GPIO=512
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
CONFIG_HZ_FIXED=0
CONFIG_HZ_100=y
# CONFIG_HZ_200 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_500 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_SCHED_HRTICK=y
# CONFIG_THUMB2_KERNEL is not set
CONFIG_AEABI=y
# CONFIG_OABI_COMPAT is not set
CONFIG_ARCH_HAS_HOLES_MEMORYMODEL=y
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
CONFIG_HAVE_ARCH_PFN_VALID=y
CONFIG_HIGHMEM=y
# CONFIG_HIGHPTE is not set
CONFIG_HW_PERF_EVENTS=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_NO_BOOTMEM=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_COMPACTION is not set
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=0
CONFIG_BOUNCE=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=32768
# CONFIG_CLEANCACHE is not set
# CONFIG_FRONTSWAP is not set
# CONFIG_CMA is not set
# CONFIG_ZBUD is not set
# CONFIG_ZSMALLOC is not set
CONFIG_FORCE_MAX_ZONEORDER=11
CONFIG_ALIGNMENT_TRAP=y
# CONFIG_UACCESS_WITH_MEMCPY is not set
CONFIG_SECCOMP=y
CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
# CONFIG_XEN is not set

#
# Boot options
#
CONFIG_USE_OF=y
CONFIG_ATAGS=y
# CONFIG_DEPRECATED_PARAM_STRUCT is not set
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
# CONFIG_ARM_APPENDED_DTB is not set
CONFIG_CMDLINE="root=/dev/nfs rw nfsroot=192.168.0.10:/media/opt/cramfs console=ttySAC2,115200 ip=192.168.0.20:192.168.0.10:192.168.0.1:255.255.255.0:test::off init=/linuxrc"
CONFIG_CMDLINE_FROM_BOOTLOADER=y
# CONFIG_CMDLINE_EXTEND is not set
# CONFIG_CMDLINE_FORCE is not set
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
CONFIG_AUTO_ZRELADDR=y

#
# CPU Power Management
#

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set

#
# CPU Idle
#
CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_MULTIPLE_DRIVERS is not set
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y

#
# ARM CPU Idle Drivers
#
CONFIG_ARM_EXYNOS_CPUIDLE=y
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set

#
# Floating point emulation
#

#
# At least one emulation must be selected
#
CONFIG_VFP=y
CONFIG_VFPv3=y
CONFIG_NEON=y
# CONFIG_KERNEL_MODE_NEON is not set

#
# Userspace binary formats
#
CONFIG_BINFMT_ELF=y
CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_BINFMT_SCRIPT=y
# CONFIG_HAVE_AOUT is not set
# CONFIG_BINFMT_MISC is not set
CONFIG_COREDUMP=y

#
# Power management options
#
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_HIBERNATION is not set
CONFIG_PM_SLEEP=y
CONFIG_PM_SLEEP_SMP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM_RUNTIME=y
CONFIG_PM=y
CONFIG_PM_DEBUG=y
# CONFIG_PM_ADVANCED_DEBUG is not set
# CONFIG_PM_TEST_SUSPEND is not set
CONFIG_PM_SLEEP_DEBUG=y
# CONFIG_DPM_WATCHDOG is not set
# CONFIG_APM_EMULATION is not set
CONFIG_ARCH_HAS_OPP=y
CONFIG_PM_OPP=y
CONFIG_PM_CLK=y
CONFIG_PM_GENERIC_DOMAINS=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_PM_GENERIC_DOMAINS_SLEEP=y
CONFIG_PM_GENERIC_DOMAINS_RUNTIME=y
CONFIG_CPU_PM=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_DIAG is not set
CONFIG_UNIX=y
# CONFIG_UNIX_DIAG is not set
CONFIG_XFRM=y
CONFIG_XFRM_ALGO=m
CONFIG_XFRM_USER=m
# CONFIG_XFRM_SUB_POLICY is not set
# CONFIG_XFRM_MIGRATE is not set
# CONFIG_XFRM_STATISTICS is not set
CONFIG_XFRM_IPCOMP=m
CONFIG_NET_KEY=m
# CONFIG_NET_KEY_MIGRATE is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
# CONFIG_IP_FIB_TRIE_STATS is not set
# CONFIG_IP_MULTIPLE_TABLES is not set
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE_DEMUX is not set
CONFIG_NET_IP_TUNNEL=m
CONFIG_IP_MROUTE=y
# CONFIG_IP_MROUTE_MULTIPLE_TABLES is not set
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
CONFIG_SYN_COOKIES=y
# CONFIG_NET_IPVTI is not set
CONFIG_INET_AH=m
CONFIG_INET_ESP=m
CONFIG_INET_IPCOMP=m
CONFIG_INET_XFRM_TUNNEL=m
CONFIG_INET_TUNNEL=m
CONFIG_INET_XFRM_MODE_TRANSPORT=m
CONFIG_INET_XFRM_MODE_TUNNEL=m
CONFIG_INET_XFRM_MODE_BEET=m
CONFIG_INET_LRO=y
# CONFIG_INET_DIAG is not set
CONFIG_TCP_CONG_ADVANCED=y
# CONFIG_TCP_CONG_BIC is not set
CONFIG_TCP_CONG_CUBIC=y
# CONFIG_TCP_CONG_WESTWOOD is not set
# CONFIG_TCP_CONG_HTCP is not set
# CONFIG_TCP_CONG_HSTCP is not set
# CONFIG_TCP_CONG_HYBLA is not set
# CONFIG_TCP_CONG_VEGAS is not set
# CONFIG_TCP_CONG_SCALABLE is not set
CONFIG_TCP_CONG_LP=m
# CONFIG_TCP_CONG_VENO is not set
# CONFIG_TCP_CONG_YEAH is not set
# CONFIG_TCP_CONG_ILLINOIS is not set
CONFIG_DEFAULT_CUBIC=y
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_TCP_CONG="cubic"
CONFIG_TCP_MD5SIG=y
CONFIG_IPV6=y
# CONFIG_IPV6_ROUTER_PREF is not set
# CONFIG_IPV6_OPTIMISTIC_DAD is not set
CONFIG_INET6_AH=m
CONFIG_INET6_ESP=m
# CONFIG_INET6_IPCOMP is not set
# CONFIG_IPV6_MIP6 is not set
# CONFIG_INET6_XFRM_TUNNEL is not set
# CONFIG_INET6_TUNNEL is not set
CONFIG_INET6_XFRM_MODE_TRANSPORT=m
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
# CONFIG_IPV6_VTI is not set
CONFIG_IPV6_SIT=m
# CONFIG_IPV6_SIT_6RD is not set
CONFIG_IPV6_NDISC_NODETYPE=y
# CONFIG_IPV6_TUNNEL is not set
# CONFIG_IPV6_GRE is not set
# CONFIG_IPV6_MULTIPLE_TABLES is not set
# CONFIG_IPV6_MROUTE is not set
# CONFIG_NETLABEL is not set
CONFIG_NETWORK_SECMARK=y
# CONFIG_NET_PTP_CLASSIFY is not set
# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
CONFIG_NETFILTER_ADVANCED=y
CONFIG_BRIDGE_NETFILTER=y

#
# Core Netfilter Configuration
#
CONFIG_NETFILTER_NETLINK=y
# CONFIG_NETFILTER_NETLINK_ACCT is not set
CONFIG_NETFILTER_NETLINK_QUEUE=y
CONFIG_NETFILTER_NETLINK_LOG=y
CONFIG_NF_CONNTRACK=y
# CONFIG_NF_CONNTRACK_MARK is not set
# CONFIG_NF_CONNTRACK_SECMARK is not set
CONFIG_NF_CONNTRACK_PROCFS=y
# CONFIG_NF_CONNTRACK_EVENTS is not set
# CONFIG_NF_CONNTRACK_TIMEOUT is not set
# CONFIG_NF_CONNTRACK_TIMESTAMP is not set
# CONFIG_NF_CT_PROTO_DCCP is not set
# CONFIG_NF_CT_PROTO_SCTP is not set
# CONFIG_NF_CT_PROTO_UDPLITE is not set
# CONFIG_NF_CONNTRACK_AMANDA is not set
# CONFIG_NF_CONNTRACK_FTP is not set
# CONFIG_NF_CONNTRACK_H323 is not set
# CONFIG_NF_CONNTRACK_IRC is not set
# CONFIG_NF_CONNTRACK_NETBIOS_NS is not set
# CONFIG_NF_CONNTRACK_SNMP is not set
# CONFIG_NF_CONNTRACK_PPTP is not set
# CONFIG_NF_CONNTRACK_SANE is not set
# CONFIG_NF_CONNTRACK_SIP is not set
# CONFIG_NF_CONNTRACK_TFTP is not set
CONFIG_NF_CT_NETLINK=y
# CONFIG_NF_CT_NETLINK_TIMEOUT is not set
# CONFIG_NETFILTER_NETLINK_QUEUE_CT is not set
CONFIG_NF_NAT=m
CONFIG_NF_NAT_NEEDED=y
# CONFIG_NF_NAT_AMANDA is not set
# CONFIG_NF_NAT_FTP is not set
# CONFIG_NF_NAT_IRC is not set
# CONFIG_NF_NAT_SIP is not set
# CONFIG_NF_NAT_TFTP is not set
# CONFIG_NF_TABLES is not set
CONFIG_NETFILTER_XTABLES=y

#
# Xtables combined modules
#
CONFIG_NETFILTER_XT_MARK=m
# CONFIG_NETFILTER_XT_CONNMARK is not set

#
# Xtables targets
#
# CONFIG_NETFILTER_XT_TARGET_CHECKSUM is not set
# CONFIG_NETFILTER_XT_TARGET_CLASSIFY is not set
# CONFIG_NETFILTER_XT_TARGET_CONNMARK is not set
# CONFIG_NETFILTER_XT_TARGET_DSCP is not set
# CONFIG_NETFILTER_XT_TARGET_HL is not set
# CONFIG_NETFILTER_XT_TARGET_HMARK is not set
# CONFIG_NETFILTER_XT_TARGET_IDLETIMER is not set
# CONFIG_NETFILTER_XT_TARGET_LED is not set
# CONFIG_NETFILTER_XT_TARGET_LOG is not set
# CONFIG_NETFILTER_XT_TARGET_MARK is not set
# CONFIG_NETFILTER_XT_TARGET_NETMAP is not set
CONFIG_NETFILTER_XT_TARGET_NFLOG=y
CONFIG_NETFILTER_XT_TARGET_NFQUEUE=y
# CONFIG_NETFILTER_XT_TARGET_RATEEST is not set
# CONFIG_NETFILTER_XT_TARGET_REDIRECT is not set
# CONFIG_NETFILTER_XT_TARGET_TEE is not set
# CONFIG_NETFILTER_XT_TARGET_TPROXY is not set
CONFIG_NETFILTER_XT_TARGET_SECMARK=y
CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
# CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP is not set

#
# Xtables matches
#
# CONFIG_NETFILTER_XT_MATCH_ADDRTYPE is not set
# CONFIG_NETFILTER_XT_MATCH_BPF is not set
# CONFIG_NETFILTER_XT_MATCH_CGROUP is not set
# CONFIG_NETFILTER_XT_MATCH_CLUSTER is not set
# CONFIG_NETFILTER_XT_MATCH_COMMENT is not set
# CONFIG_NETFILTER_XT_MATCH_CONNBYTES is not set
# CONFIG_NETFILTER_XT_MATCH_CONNLABEL is not set
# CONFIG_NETFILTER_XT_MATCH_CONNLIMIT is not set
# CONFIG_NETFILTER_XT_MATCH_CONNMARK is not set
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
# CONFIG_NETFILTER_XT_MATCH_CPU is not set
# CONFIG_NETFILTER_XT_MATCH_DCCP is not set
# CONFIG_NETFILTER_XT_MATCH_DEVGROUP is not set
# CONFIG_NETFILTER_XT_MATCH_DSCP is not set
# CONFIG_NETFILTER_XT_MATCH_ECN is not set
# CONFIG_NETFILTER_XT_MATCH_ESP is not set
# CONFIG_NETFILTER_XT_MATCH_HASHLIMIT is not set
# CONFIG_NETFILTER_XT_MATCH_HELPER is not set
# CONFIG_NETFILTER_XT_MATCH_HL is not set
# CONFIG_NETFILTER_XT_MATCH_IPCOMP is not set
# CONFIG_NETFILTER_XT_MATCH_IPRANGE is not set
# CONFIG_NETFILTER_XT_MATCH_L2TP is not set
# CONFIG_NETFILTER_XT_MATCH_LENGTH is not set
# CONFIG_NETFILTER_XT_MATCH_LIMIT is not set
# CONFIG_NETFILTER_XT_MATCH_MAC is not set
# CONFIG_NETFILTER_XT_MATCH_MARK is not set
# CONFIG_NETFILTER_XT_MATCH_MULTIPORT is not set
# CONFIG_NETFILTER_XT_MATCH_NFACCT is not set
# CONFIG_NETFILTER_XT_MATCH_OSF is not set
# CONFIG_NETFILTER_XT_MATCH_OWNER is not set
CONFIG_NETFILTER_XT_MATCH_POLICY=y
# CONFIG_NETFILTER_XT_MATCH_PHYSDEV is not set
# CONFIG_NETFILTER_XT_MATCH_PKTTYPE is not set
# CONFIG_NETFILTER_XT_MATCH_QUOTA is not set
# CONFIG_NETFILTER_XT_MATCH_RATEEST is not set
# CONFIG_NETFILTER_XT_MATCH_REALM is not set
# CONFIG_NETFILTER_XT_MATCH_RECENT is not set
# CONFIG_NETFILTER_XT_MATCH_SCTP is not set
# CONFIG_NETFILTER_XT_MATCH_SOCKET is not set
CONFIG_NETFILTER_XT_MATCH_STATE=y
# CONFIG_NETFILTER_XT_MATCH_STATISTIC is not set
# CONFIG_NETFILTER_XT_MATCH_STRING is not set
# CONFIG_NETFILTER_XT_MATCH_TCPMSS is not set
# CONFIG_NETFILTER_XT_MATCH_TIME is not set
# CONFIG_NETFILTER_XT_MATCH_U32 is not set
# CONFIG_IP_SET is not set
# CONFIG_IP_VS is not set

#
# IP: Netfilter Configuration
#
CONFIG_NF_DEFRAG_IPV4=y
CONFIG_NF_CONNTRACK_IPV4=y
CONFIG_NF_CONNTRACK_PROC_COMPAT=y
CONFIG_IP_NF_IPTABLES=y
# CONFIG_IP_NF_MATCH_AH is not set
# CONFIG_IP_NF_MATCH_ECN is not set
# CONFIG_IP_NF_MATCH_RPFILTER is not set
# CONFIG_IP_NF_MATCH_TTL is not set
CONFIG_IP_NF_FILTER=y
CONFIG_IP_NF_TARGET_REJECT=y
# CONFIG_IP_NF_TARGET_SYNPROXY is not set
CONFIG_IP_NF_TARGET_ULOG=y
CONFIG_NF_NAT_IPV4=m
CONFIG_IP_NF_TARGET_MASQUERADE=m
# CONFIG_IP_NF_TARGET_NETMAP is not set
# CONFIG_IP_NF_TARGET_REDIRECT is not set
# CONFIG_NF_NAT_PPTP is not set
# CONFIG_NF_NAT_H323 is not set
CONFIG_IP_NF_MANGLE=y
# CONFIG_IP_NF_TARGET_CLUSTERIP is not set
# CONFIG_IP_NF_TARGET_ECN is not set
# CONFIG_IP_NF_TARGET_TTL is not set
# CONFIG_IP_NF_RAW is not set
# CONFIG_IP_NF_SECURITY is not set
# CONFIG_IP_NF_ARPTABLES is not set

#
# IPv6: Netfilter Configuration
#
CONFIG_NF_DEFRAG_IPV6=m
CONFIG_NF_CONNTRACK_IPV6=m
CONFIG_IP6_NF_IPTABLES=m
# CONFIG_IP6_NF_MATCH_AH is not set
# CONFIG_IP6_NF_MATCH_EUI64 is not set
# CONFIG_IP6_NF_MATCH_FRAG is not set
# CONFIG_IP6_NF_MATCH_OPTS is not set
# CONFIG_IP6_NF_MATCH_HL is not set
CONFIG_IP6_NF_MATCH_IPV6HEADER=m
# CONFIG_IP6_NF_MATCH_MH is not set
# CONFIG_IP6_NF_MATCH_RPFILTER is not set
# CONFIG_IP6_NF_MATCH_RT is not set
# CONFIG_IP6_NF_TARGET_HL is not set
CONFIG_IP6_NF_FILTER=m
CONFIG_IP6_NF_TARGET_REJECT=m
# CONFIG_IP6_NF_TARGET_SYNPROXY is not set
CONFIG_IP6_NF_MANGLE=m
# CONFIG_IP6_NF_RAW is not set
# CONFIG_IP6_NF_SECURITY is not set
CONFIG_NF_NAT_IPV6=m
CONFIG_IP6_NF_TARGET_MASQUERADE=m
# CONFIG_IP6_NF_TARGET_NPT is not set
# CONFIG_BRIDGE_NF_EBTABLES is not set
# CONFIG_IP_DCCP is not set
# CONFIG_IP_SCTP is not set
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_L2TP is not set
CONFIG_STP=m
CONFIG_BRIDGE=m
CONFIG_BRIDGE_IGMP_SNOOPING=y
# CONFIG_BRIDGE_VLAN_FILTERING is not set
CONFIG_HAVE_NET_DSA=y
CONFIG_VLAN_8021Q=m
# CONFIG_VLAN_8021Q_GVRP is not set
# CONFIG_VLAN_8021Q_MVRP is not set
# CONFIG_DECNET is not set
CONFIG_LLC=m
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
CONFIG_NET_SCHED=y

#
# Queueing/Scheduling
#
# CONFIG_NET_SCH_CBQ is not set
CONFIG_NET_SCH_HTB=m
# CONFIG_NET_SCH_HFSC is not set
# CONFIG_NET_SCH_PRIO is not set
# CONFIG_NET_SCH_MULTIQ is not set
# CONFIG_NET_SCH_RED is not set
# CONFIG_NET_SCH_SFB is not set
# CONFIG_NET_SCH_SFQ is not set
# CONFIG_NET_SCH_TEQL is not set
# CONFIG_NET_SCH_TBF is not set
# CONFIG_NET_SCH_GRED is not set
# CONFIG_NET_SCH_DSMARK is not set
# CONFIG_NET_SCH_NETEM is not set
# CONFIG_NET_SCH_DRR is not set
# CONFIG_NET_SCH_MQPRIO is not set
# CONFIG_NET_SCH_CHOKE is not set
# CONFIG_NET_SCH_QFQ is not set
CONFIG_NET_SCH_CODEL=m
CONFIG_NET_SCH_FQ_CODEL=m
# CONFIG_NET_SCH_FQ is not set
# CONFIG_NET_SCH_HHF is not set
# CONFIG_NET_SCH_PIE is not set
# CONFIG_NET_SCH_PLUG is not set

#
# Classification
#
CONFIG_NET_CLS=y
# CONFIG_NET_CLS_BASIC is not set
# CONFIG_NET_CLS_TCINDEX is not set
# CONFIG_NET_CLS_ROUTE4 is not set
# CONFIG_NET_CLS_FW is not set
CONFIG_NET_CLS_U32=m
# CONFIG_CLS_U32_PERF is not set
CONFIG_CLS_U32_MARK=y
# CONFIG_NET_CLS_RSVP is not set
# CONFIG_NET_CLS_RSVP6 is not set
# CONFIG_NET_CLS_FLOW is not set
# CONFIG_NET_CLS_CGROUP is not set
# CONFIG_NET_CLS_BPF is not set
# CONFIG_NET_EMATCH is not set
# CONFIG_NET_CLS_ACT is not set
# CONFIG_NET_CLS_IND is not set
CONFIG_NET_SCH_FIFO=y
# CONFIG_DCB is not set
# CONFIG_DNS_RESOLVER is not set
# CONFIG_BATMAN_ADV is not set
# CONFIG_OPENVSWITCH is not set
# CONFIG_VSOCKETS is not set
# CONFIG_NETLINK_MMAP is not set
# CONFIG_NETLINK_DIAG is not set
# CONFIG_NET_MPLS_GSO is not set
# CONFIG_HSR is not set
CONFIG_RPS=y
CONFIG_RFS_ACCEL=y
CONFIG_XPS=y
# CONFIG_CGROUP_NET_PRIO is not set
# CONFIG_CGROUP_NET_CLASSID is not set
CONFIG_NET_RX_BUSY_POLL=y
CONFIG_BQL=y
# CONFIG_BPF_JIT is not set
CONFIG_NET_FLOW_LIMIT=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_NET_DROP_MONITOR is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
CONFIG_BT=m
# CONFIG_BT_6LOWPAN is not set
CONFIG_BT_RFCOMM=m
# CONFIG_BT_RFCOMM_TTY is not set
# CONFIG_BT_BNEP is not set
CONFIG_BT_HIDP=m

#
# Bluetooth device drivers
#
CONFIG_BT_HCIBTUSB=m
CONFIG_BT_HCIBTSDIO=m
CONFIG_BT_HCIUART=m
CONFIG_BT_HCIUART_H4=y
# CONFIG_BT_HCIUART_BCSP is not set
CONFIG_BT_HCIUART_ATH3K=y
CONFIG_BT_HCIUART_LL=y
# CONFIG_BT_HCIUART_3WIRE is not set
# CONFIG_BT_HCIBCM203X is not set
# CONFIG_BT_HCIBPA10X is not set
CONFIG_BT_HCIBFUSB=m
CONFIG_BT_HCIVHCI=m
CONFIG_BT_MRVL=m
CONFIG_BT_MRVL_SDIO=m
# CONFIG_BT_ATH3K is not set
# CONFIG_AF_RXRPC is not set
CONFIG_WIRELESS=y
CONFIG_WIRELESS_EXT=y
CONFIG_WEXT_CORE=y
CONFIG_WEXT_PROC=y
CONFIG_WEXT_SPY=y
CONFIG_WEXT_PRIV=y
CONFIG_CFG80211=m
CONFIG_NL80211_TESTMODE=y
# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
# CONFIG_CFG80211_REG_DEBUG is not set
# CONFIG_CFG80211_CERTIFICATION_ONUS is not set
CONFIG_CFG80211_DEFAULT_PS=y
CONFIG_CFG80211_DEBUGFS=y
# CONFIG_CFG80211_INTERNAL_REGDB is not set
CONFIG_CFG80211_WEXT=y
CONFIG_LIB80211=m
CONFIG_LIB80211_CRYPT_WEP=m
CONFIG_LIB80211_CRYPT_CCMP=m
CONFIG_LIB80211_CRYPT_TKIP=m
# CONFIG_LIB80211_DEBUG is not set
CONFIG_MAC80211=m
CONFIG_MAC80211_HAS_RC=y
# CONFIG_MAC80211_RC_PID is not set
CONFIG_MAC80211_RC_MINSTREL=y
CONFIG_MAC80211_RC_MINSTREL_HT=y
CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
# CONFIG_MAC80211_MESH is not set
CONFIG_MAC80211_LEDS=y
CONFIG_MAC80211_DEBUGFS=y
# CONFIG_MAC80211_MESSAGE_TRACING is not set
CONFIG_MAC80211_DEBUG_MENU=y
# CONFIG_MAC80211_NOINLINE is not set
CONFIG_MAC80211_VERBOSE_DEBUG=y
# CONFIG_MAC80211_MLME_DEBUG is not set
# CONFIG_MAC80211_STA_DEBUG is not set
# CONFIG_MAC80211_HT_DEBUG is not set
# CONFIG_MAC80211_IBSS_DEBUG is not set
# CONFIG_MAC80211_PS_DEBUG is not set
# CONFIG_MAC80211_TDLS_DEBUG is not set
# CONFIG_MAC80211_DEBUG_COUNTERS is not set
# CONFIG_WIMAX is not set
CONFIG_RFKILL=y
CONFIG_RFKILL_LEDS=y
# CONFIG_RFKILL_INPUT is not set
# CONFIG_RFKILL_REGULATOR is not set
# CONFIG_RFKILL_GPIO is not set
# CONFIG_NET_9P is not set
# CONFIG_CAIF is not set
# CONFIG_CEPH_LIB is not set
# CONFIG_NFC is not set
CONFIG_HAVE_BPF_JIT=y

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER=y
CONFIG_UEVENT_HELPER_PATH=""
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE=""
CONFIG_FW_LOADER_USER_HELPER=y
# CONFIG_DEBUG_DRIVER is not set
CONFIG_DEBUG_DEVRES=y
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_GENERIC_CPU_DEVICES is not set
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=y
CONFIG_REGMAP_SPI=y
CONFIG_REGMAP_MMIO=y
CONFIG_REGMAP_IRQ=y
CONFIG_DMA_SHARED_BUFFER=y

#
# Bus devices
#
# CONFIG_BRCMSTB_GISB_ARB is not set
CONFIG_ARM_CCI=y
# CONFIG_VEXPRESS_CONFIG is not set
CONFIG_CONNECTOR=y
CONFIG_PROC_EVENTS=y
# CONFIG_MTD is not set
CONFIG_DTC=y
CONFIG_OF=y

#
# Device Tree and Open Firmware support
#
# CONFIG_OF_SELFTEST is not set
CONFIG_OF_FLATTREE=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_IRQ=y
CONFIG_OF_NET=y
CONFIG_OF_MDIO=y
CONFIG_OF_RESERVED_MEM=y
# CONFIG_PARPORT is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_NULL_BLK is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_MG_DISK is not set
# CONFIG_BLK_DEV_RBD is not set

#
# Misc devices
#
# CONFIG_SENSORS_LIS3LV02D is not set
# CONFIG_AD525X_DPOT is not set
# CONFIG_DUMMY_IRQ is not set
# CONFIG_ICS932S401 is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_APDS9802ALS is not set
# CONFIG_ISL29003 is not set
# CONFIG_ISL29020 is not set
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_SENSORS_BH1780 is not set
# CONFIG_SENSORS_BH1770 is not set
# CONFIG_SENSORS_APDS990X is not set
# CONFIG_HMC6352 is not set
# CONFIG_DS1682 is not set
# CONFIG_TI_DAC7512 is not set
# CONFIG_BMP085_I2C is not set
# CONFIG_BMP085_SPI is not set
# CONFIG_USB_SWITCH_FSA9480 is not set
# CONFIG_LATTICE_ECP3_CONFIG is not set
CONFIG_SRAM=y
# CONFIG_C2PORT is not set

#
# EEPROM support
#
# CONFIG_EEPROM_AT24 is not set
# CONFIG_EEPROM_AT25 is not set
# CONFIG_EEPROM_LEGACY is not set
# CONFIG_EEPROM_MAX6875 is not set
# CONFIG_EEPROM_93CX6 is not set
# CONFIG_EEPROM_93XX46 is not set

#
# Texas Instruments shared transport line discipline
#
# CONFIG_TI_ST is not set
# CONFIG_SENSORS_LIS3_SPI is not set
# CONFIG_SENSORS_LIS3_I2C is not set

#
# Altera FPGA firmware download module
#
# CONFIG_ALTERA_STAPL is not set

#
# Intel MIC Host Driver
#

#
# Intel MIC Card Driver
#
# CONFIG_ECHO is not set

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_TGT is not set
# CONFIG_SCSI_NETLINK is not set
CONFIG_SCSI_PROC_FS=y

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
CONFIG_BLK_DEV_SR=m
# CONFIG_BLK_DEV_SR_VENDOR is not set
# CONFIG_CHR_DEV_SG is not set
# CONFIG_CHR_DEV_SCH is not set
CONFIG_SCSI_MULTI_LUN=y
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set

#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=y
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
CONFIG_SCSI_LOWLEVEL=y
# CONFIG_ISCSI_TCP is not set
# CONFIG_ISCSI_BOOT_SYSFS is not set
# CONFIG_SCSI_UFSHCD is not set
# CONFIG_LIBFC is not set
# CONFIG_LIBFCOE is not set
# CONFIG_SCSI_DEBUG is not set
# CONFIG_SCSI_DH is not set
# CONFIG_SCSI_OSD_INITIATOR is not set
# CONFIG_ATA is not set
CONFIG_MD=y
# CONFIG_BLK_DEV_MD is not set
# CONFIG_BCACHE is not set
CONFIG_BLK_DEV_DM_BUILTIN=y
CONFIG_BLK_DEV_DM=y
# CONFIG_DM_DEBUG is not set
CONFIG_DM_BUFIO=y
CONFIG_DM_CRYPT=y
# CONFIG_DM_SNAPSHOT is not set
# CONFIG_DM_THIN_PROVISIONING is not set
# CONFIG_DM_CACHE is not set
# CONFIG_DM_ERA is not set
# CONFIG_DM_MIRROR is not set
# CONFIG_DM_RAID is not set
# CONFIG_DM_ZERO is not set
# CONFIG_DM_MULTIPATH is not set
# CONFIG_DM_DELAY is not set
# CONFIG_DM_UEVENT is not set
# CONFIG_DM_FLAKEY is not set
CONFIG_DM_VERITY=y
# CONFIG_DM_SWITCH is not set
# CONFIG_TARGET_CORE is not set
CONFIG_NETDEVICES=y
CONFIG_MII=y
CONFIG_NET_CORE=y
# CONFIG_BONDING is not set
# CONFIG_DUMMY is not set
# CONFIG_EQUALIZER is not set
# CONFIG_NET_TEAM is not set
# CONFIG_MACVLAN is not set
# CONFIG_VXLAN is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
CONFIG_TUN=m
CONFIG_VETH=m
# CONFIG_NLMON is not set

#
# CAIF transport drivers
#

#
# Distributed Switch Architecture drivers
#
# CONFIG_NET_DSA_MV88E6XXX is not set
# CONFIG_NET_DSA_MV88E6060 is not set
# CONFIG_NET_DSA_MV88E6XXX_NEED_PPU is not set
# CONFIG_NET_DSA_MV88E6131 is not set
# CONFIG_NET_DSA_MV88E6123_61_65 is not set
CONFIG_ETHERNET=y
# CONFIG_ALTERA_TSE is not set
CONFIG_NET_VENDOR_ARC=y
# CONFIG_ARC_EMAC is not set
CONFIG_NET_CADENCE=y
CONFIG_NET_VENDOR_BROADCOM=y
# CONFIG_B44 is not set
# CONFIG_BCMGENET is not set
# CONFIG_SYSTEMPORT is not set
# CONFIG_NET_CALXEDA_XGMAC is not set
CONFIG_NET_VENDOR_CIRRUS=y
# CONFIG_CS89x0 is not set
# CONFIG_DM9000 is not set
# CONFIG_DNET is not set
CONFIG_NET_VENDOR_FARADAY=y
# CONFIG_FTMAC100 is not set
# CONFIG_FTGMAC100 is not set
CONFIG_NET_VENDOR_HISILICON=y
# CONFIG_HIX5HD2_GMAC is not set
CONFIG_NET_VENDOR_INTEL=y
CONFIG_NET_VENDOR_I825XX=y
CONFIG_NET_VENDOR_MARVELL=y
# CONFIG_MVMDIO is not set
CONFIG_NET_VENDOR_MICREL=y
# CONFIG_KS8842 is not set
# CONFIG_KS8851 is not set
# CONFIG_KS8851_MLL is not set
CONFIG_NET_VENDOR_MICROCHIP=y
# CONFIG_ENC28J60 is not set
CONFIG_NET_VENDOR_NATSEMI=y
CONFIG_NET_VENDOR_8390=y
# CONFIG_AX88796 is not set
# CONFIG_ETHOC is not set
# CONFIG_SH_ETH is not set
CONFIG_NET_VENDOR_SAMSUNG=y
# CONFIG_SXGBE_ETH is not set
CONFIG_NET_VENDOR_SEEQ=y
CONFIG_NET_VENDOR_SMSC=y
# CONFIG_SMC91X is not set
CONFIG_SMC911X=y
CONFIG_SMSC911X=y
# CONFIG_SMSC911X_ARCH_HOOKS is not set
CONFIG_NET_VENDOR_STMICRO=y
# CONFIG_STMMAC_ETH is not set
CONFIG_NET_VENDOR_VIA=y
# CONFIG_VIA_RHINE is not set
# CONFIG_VIA_VELOCITY is not set
CONFIG_NET_VENDOR_WIZNET=y
# CONFIG_WIZNET_W5100 is not set
# CONFIG_WIZNET_W5300 is not set
CONFIG_PHYLIB=y

#
# MII PHY device drivers
#
# CONFIG_AT803X_PHY is not set
# CONFIG_AMD_PHY is not set
# CONFIG_AMD_XGBE_PHY is not set
# CONFIG_MARVELL_PHY is not set
# CONFIG_DAVICOM_PHY is not set
# CONFIG_QSEMI_PHY is not set
# CONFIG_LXT_PHY is not set
# CONFIG_CICADA_PHY is not set
# CONFIG_VITESSE_PHY is not set
# CONFIG_SMSC_PHY is not set
# CONFIG_BROADCOM_PHY is not set
# CONFIG_BCM7XXX_PHY is not set
# CONFIG_BCM87XX_PHY is not set
# CONFIG_ICPLUS_PHY is not set
# CONFIG_REALTEK_PHY is not set
# CONFIG_NATIONAL_PHY is not set
# CONFIG_STE10XP is not set
# CONFIG_LSI_ET1011C_PHY is not set
# CONFIG_MICREL_PHY is not set
# CONFIG_FIXED_PHY is not set
# CONFIG_MDIO_BITBANG is not set
# CONFIG_MDIO_BUS_MUX_GPIO is not set
# CONFIG_MDIO_BUS_MUX_MMIOREG is not set
# CONFIG_MICREL_KS8995MA is not set
CONFIG_PPP=m
# CONFIG_PPP_BSDCOMP is not set
# CONFIG_PPP_DEFLATE is not set
# CONFIG_PPP_FILTER is not set
# CONFIG_PPP_MPPE is not set
# CONFIG_PPP_MULTILINK is not set
# CONFIG_PPPOE is not set
CONFIG_PPP_ASYNC=m
# CONFIG_PPP_SYNC_TTY is not set
# CONFIG_SLIP is not set
CONFIG_SLHC=m

#
# USB Network Adapters
#
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
CONFIG_USB_PEGASUS=m
CONFIG_USB_RTL8150=m
CONFIG_USB_RTL8152=m
CONFIG_USB_USBNET=m
CONFIG_USB_NET_AX8817X=m
CONFIG_USB_NET_AX88179_178A=m
CONFIG_USB_NET_CDCETHER=m
# CONFIG_USB_NET_CDC_EEM is not set
CONFIG_USB_NET_CDC_NCM=m
# CONFIG_USB_NET_HUAWEI_CDC_NCM is not set
CONFIG_USB_NET_CDC_MBIM=m
CONFIG_USB_NET_DM9601=m
# CONFIG_USB_NET_SR9700 is not set
# CONFIG_USB_NET_SR9800 is not set
CONFIG_USB_NET_SMSC75XX=m
CONFIG_USB_NET_SMSC95XX=m
# CONFIG_USB_NET_GL620A is not set
CONFIG_USB_NET_NET1080=m
# CONFIG_USB_NET_PLUSB is not set
CONFIG_USB_NET_MCS7830=m
CONFIG_USB_NET_RNDIS_HOST=m
# CONFIG_USB_NET_CDC_SUBSET is not set
# CONFIG_USB_NET_ZAURUS is not set
# CONFIG_USB_NET_CX82310_ETH is not set
# CONFIG_USB_NET_KALMIA is not set
# CONFIG_USB_NET_QMI_WWAN is not set
# CONFIG_USB_HSO is not set
# CONFIG_USB_NET_INT51X1 is not set
# CONFIG_USB_IPHETH is not set
# CONFIG_USB_SIERRA_NET is not set
# CONFIG_USB_VL600 is not set
CONFIG_WLAN=y
CONFIG_LIBERTAS_THINFIRM=m
# CONFIG_LIBERTAS_THINFIRM_DEBUG is not set
CONFIG_LIBERTAS_THINFIRM_USB=m
# CONFIG_AT76C50X_USB is not set
# CONFIG_USB_ZD1201 is not set
CONFIG_USB_NET_RNDIS_WLAN=m
# CONFIG_RTL8187 is not set
CONFIG_MAC80211_HWSIM=m
# CONFIG_ATH_CARDS is not set
# CONFIG_B43 is not set
# CONFIG_B43LEGACY is not set
# CONFIG_BRCMSMAC is not set
# CONFIG_BRCMFMAC is not set
CONFIG_HOSTAP=m
CONFIG_HOSTAP_FIRMWARE=y
CONFIG_HOSTAP_FIRMWARE_NVRAM=y
# CONFIG_LIBERTAS is not set
# CONFIG_P54_COMMON is not set
CONFIG_RT2X00=m
CONFIG_RT2500USB=m
# CONFIG_RT73USB is not set
CONFIG_RT2800USB=m
CONFIG_RT2800USB_RT33XX=y
CONFIG_RT2800USB_RT35XX=y
# CONFIG_RT2800USB_RT3573 is not set
# CONFIG_RT2800USB_RT53XX is not set
# CONFIG_RT2800USB_RT55XX is not set
# CONFIG_RT2800USB_UNKNOWN is not set
CONFIG_RT2800_LIB=m
CONFIG_RT2X00_LIB_USB=m
CONFIG_RT2X00_LIB=m
CONFIG_RT2X00_LIB_FIRMWARE=y
CONFIG_RT2X00_LIB_CRYPTO=y
CONFIG_RT2X00_LIB_LEDS=y
# CONFIG_RT2X00_LIB_DEBUGFS is not set
# CONFIG_RT2X00_DEBUG is not set
CONFIG_RTL_CARDS=m
# CONFIG_RTL8192CU is not set
# CONFIG_WL_TI is not set
# CONFIG_ZD1211RW is not set
CONFIG_MWIFIEX=m
CONFIG_MWIFIEX_SDIO=m
# CONFIG_MWIFIEX_USB is not set
# CONFIG_CW1200 is not set
# CONFIG_RSI_91X is not set

#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#
# CONFIG_WAN is not set
# CONFIG_ISDN is not set

#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_FF_MEMLESS=y
# CONFIG_INPUT_POLLDEV is not set
# CONFIG_INPUT_SPARSEKMAP is not set
CONFIG_INPUT_MATRIXKMAP=y

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
CONFIG_INPUT_JOYDEV=m
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
# CONFIG_KEYBOARD_ADP5589 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_QT1070 is not set
# CONFIG_KEYBOARD_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
CONFIG_KEYBOARD_GPIO=y
# CONFIG_KEYBOARD_GPIO_POLLED is not set
# CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_MCS is not set
# CONFIG_KEYBOARD_MPR121 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_SAMSUNG is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_OMAP4 is not set
# CONFIG_KEYBOARD_XTKBD is not set
CONFIG_KEYBOARD_CROS_EC=y
CONFIG_INPUT_MOUSE=y
# CONFIG_MOUSE_PS2 is not set
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_APPLETOUCH is not set
# CONFIG_MOUSE_BCM5974 is not set
CONFIG_MOUSE_CYAPA=y
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_MOUSE_GPIO is not set
# CONFIG_MOUSE_SYNAPTICS_I2C is not set
# CONFIG_MOUSE_SYNAPTICS_USB is not set
CONFIG_INPUT_JOYSTICK=y
# CONFIG_JOYSTICK_ANALOG is not set
# CONFIG_JOYSTICK_A3D is not set
# CONFIG_JOYSTICK_ADI is not set
# CONFIG_JOYSTICK_COBRA is not set
# CONFIG_JOYSTICK_GF2K is not set
# CONFIG_JOYSTICK_GRIP is not set
# CONFIG_JOYSTICK_GRIP_MP is not set
# CONFIG_JOYSTICK_GUILLEMOT is not set
# CONFIG_JOYSTICK_INTERACT is not set
# CONFIG_JOYSTICK_SIDEWINDER is not set
# CONFIG_JOYSTICK_TMDC is not set
CONFIG_JOYSTICK_IFORCE=m
CONFIG_JOYSTICK_IFORCE_USB=y
# CONFIG_JOYSTICK_IFORCE_232 is not set
# CONFIG_JOYSTICK_WARRIOR is not set
# CONFIG_JOYSTICK_MAGELLAN is not set
# CONFIG_JOYSTICK_SPACEORB is not set
# CONFIG_JOYSTICK_SPACEBALL is not set
# CONFIG_JOYSTICK_STINGER is not set
# CONFIG_JOYSTICK_TWIDJOY is not set
# CONFIG_JOYSTICK_ZHENHUA is not set
# CONFIG_JOYSTICK_AS5011 is not set
# CONFIG_JOYSTICK_JOYDUMP is not set
CONFIG_JOYSTICK_XPAD=m
CONFIG_JOYSTICK_XPAD_FF=y
CONFIG_JOYSTICK_XPAD_LEDS=y
# CONFIG_INPUT_TABLET is not set
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_OF_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_ADS7846 is not set
# CONFIG_TOUCHSCREEN_AD7877 is not set
# CONFIG_TOUCHSCREEN_AD7879 is not set
CONFIG_TOUCHSCREEN_ATMEL_MXT=y
# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set
# CONFIG_TOUCHSCREEN_BU21013 is not set
# CONFIG_TOUCHSCREEN_CY8CTMG110 is not set
# CONFIG_TOUCHSCREEN_CYTTSP_CORE is not set
# CONFIG_TOUCHSCREEN_CYTTSP4_CORE is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_EGALAX is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_ILI210X is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_ELO is not set
# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
# CONFIG_TOUCHSCREEN_WACOM_I2C is not set
# CONFIG_TOUCHSCREEN_MAX11801 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MMS114 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_EDT_FT5X06 is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_PIXCIR is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC_SERIO is not set
# CONFIG_TOUCHSCREEN_TSC2005 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
# CONFIG_TOUCHSCREEN_ST1232 is not set
# CONFIG_TOUCHSCREEN_SUR40 is not set
# CONFIG_TOUCHSCREEN_TPS6507X is not set
# CONFIG_TOUCHSCREEN_ZFORCE is not set
CONFIG_INPUT_MISC=y
# CONFIG_INPUT_AD714X is not set
# CONFIG_INPUT_BMA150 is not set
# CONFIG_INPUT_MMA8450 is not set
# CONFIG_INPUT_MPU3050 is not set
# CONFIG_INPUT_GP2A is not set
# CONFIG_INPUT_GPIO_BEEPER is not set
# CONFIG_INPUT_GPIO_TILT_POLLED is not set
# CONFIG_INPUT_ATI_REMOTE2 is not set
# CONFIG_INPUT_KEYSPAN_REMOTE is not set
# CONFIG_INPUT_KXTJ9 is not set
# CONFIG_INPUT_POWERMATE is not set
# CONFIG_INPUT_YEALINK is not set
# CONFIG_INPUT_CM109 is not set
CONFIG_INPUT_UINPUT=m
# CONFIG_INPUT_PCF8574 is not set
# CONFIG_INPUT_PWM_BEEPER is not set
# CONFIG_INPUT_GPIO_ROTARY_ENCODER is not set
# CONFIG_INPUT_ADXL34X is not set
# CONFIG_INPUT_IMS_PCU is not set
# CONFIG_INPUT_CMA3000 is not set
# CONFIG_INPUT_SOC_BUTTON_ARRAY is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_SERPORT=m
# CONFIG_SERIO_AMBAKMI is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=y
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_SERIO_PS2MULT is not set
# CONFIG_SERIO_ARC_PS2 is not set
# CONFIG_SERIO_APBPS2 is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_UNIX98_PTYS=y
# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_N_GSM is not set
# CONFIG_TRACE_SINK is not set
# CONFIG_DEVKMEM is not set

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
# CONFIG_SERIAL_8250_CONSOLE is not set
CONFIG_SERIAL_8250_DMA=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
# CONFIG_SERIAL_8250_DW is not set
# CONFIG_SERIAL_8250_EM is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_AMBA_PL010 is not set
# CONFIG_SERIAL_AMBA_PL011 is not set
# CONFIG_SERIAL_EARLYCON_ARM_SEMIHOST is not set
CONFIG_SERIAL_SAMSUNG=y
CONFIG_SERIAL_SAMSUNG_UARTS_4=y
CONFIG_SERIAL_SAMSUNG_UARTS=4
# CONFIG_SERIAL_SAMSUNG_DEBUG is not set
CONFIG_SERIAL_SAMSUNG_CONSOLE=y
# CONFIG_SERIAL_MAX3100 is not set
# CONFIG_SERIAL_MAX310X is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_OF_PLATFORM is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_SC16IS7XX is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_IFX6X60 is not set
# CONFIG_SERIAL_XILINX_PS_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_ST_ASC is not set
# CONFIG_TTY_PRINTK is not set
# CONFIG_HVC_DCC is not set
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=y
# CONFIG_HW_RANDOM_TIMERIOMEM is not set
CONFIG_HW_RANDOM_EXYNOS=y
CONFIG_HW_RANDOM_TPM=y
# CONFIG_R3964 is not set
# CONFIG_RAW_DRIVER is not set
CONFIG_TCG_TPM=y
# CONFIG_TCG_TIS_I2C_ATMEL is not set
CONFIG_TCG_TIS_I2C_INFINEON=y
# CONFIG_TCG_TIS_I2C_NUVOTON is not set
# CONFIG_TCG_ST33_I2C is not set
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=m
CONFIG_I2C_MUX=y

#
# Multiplexer I2C Chip support
#
CONFIG_I2C_ARB_GPIO_CHALLENGE=y
# CONFIG_I2C_MUX_GPIO is not set
# CONFIG_I2C_MUX_PCA9541 is not set
# CONFIG_I2C_MUX_PCA954x is not set
# CONFIG_I2C_MUX_PINCTRL is not set
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=y

#
# I2C Hardware Bus support
#

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_CBUS_GPIO is not set
# CONFIG_I2C_DESIGNWARE_PLATFORM is not set
CONFIG_I2C_EXYNOS5=y
# CONFIG_I2C_GPIO is not set
# CONFIG_I2C_NOMADIK is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_PXA_PCI is not set
# CONFIG_I2C_RK3X is not set
CONFIG_HAVE_S3C2410_I2C=y
CONFIG_I2C_S3C2410=y
# CONFIG_I2C_SIMTEC is not set
# CONFIG_I2C_XILINX is not set

#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_DIOLAN_U2C is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set

#
# Other I2C/SMBus bus drivers
#
CONFIG_I2C_CROS_EC_TUNNEL=y
CONFIG_I2C_STUB=m
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
CONFIG_SPI=y
# CONFIG_SPI_DEBUG is not set
CONFIG_SPI_MASTER=y

#
# SPI Master Controller Drivers
#
# CONFIG_SPI_ALTERA is not set
CONFIG_SPI_BITBANG=m
# CONFIG_SPI_CADENCE is not set
# CONFIG_SPI_GPIO is not set
# CONFIG_SPI_FSL_SPI is not set
# CONFIG_SPI_OC_TINY is not set
# CONFIG_SPI_PL022 is not set
# CONFIG_SPI_PXA2XX_PCI is not set
CONFIG_SPI_S3C64XX=y
# CONFIG_SPI_SC18IS602 is not set
# CONFIG_SPI_XCOMM is not set
# CONFIG_SPI_XILINX is not set
# CONFIG_SPI_DESIGNWARE is not set

#
# SPI Protocol Masters
#
CONFIG_SPI_SPIDEV=y
# CONFIG_SPI_TLE62X0 is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set

#
# PPS support
#
# CONFIG_PPS is not set

#
# PPS generators support
#

#
# PTP clock support
#
# CONFIG_PTP_1588_CLOCK is not set

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
CONFIG_PINCTRL=y

#
# Pin controllers
#
CONFIG_PINMUX=y
CONFIG_PINCONF=y
# CONFIG_DEBUG_PINCTRL is not set
# CONFIG_PINCTRL_BCM281XX is not set
# CONFIG_PINCTRL_APQ8064 is not set
# CONFIG_PINCTRL_IPQ8064 is not set
# CONFIG_PINCTRL_SINGLE is not set
CONFIG_PINCTRL_SAMSUNG=y
CONFIG_PINCTRL_EXYNOS=y
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
CONFIG_ARCH_REQUIRE_GPIOLIB=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_DEVRES=y
CONFIG_OF_GPIO=y
CONFIG_DEBUG_GPIO=y
CONFIG_GPIO_SYSFS=y

#
# Memory mapped GPIO drivers:
#
# CONFIG_GPIO_GENERIC_PLATFORM is not set
# CONFIG_GPIO_DWAPB is not set
# CONFIG_GPIO_EM is not set
# CONFIG_GPIO_ZEVIO is not set
# CONFIG_GPIO_PL061 is not set
# CONFIG_GPIO_SCH311X is not set
# CONFIG_GPIO_SYSCON is not set
# CONFIG_GPIO_GRGPIO is not set

#
# I2C GPIO expanders:
#
# CONFIG_GPIO_MAX7300 is not set
# CONFIG_GPIO_MAX732X is not set
# CONFIG_GPIO_PCA953X is not set
# CONFIG_GPIO_PCF857X is not set
# CONFIG_GPIO_SX150X is not set
# CONFIG_GPIO_WM8994 is not set
# CONFIG_GPIO_ADP5588 is not set
# CONFIG_GPIO_ADNP is not set

#
# PCI GPIO expanders:
#

#
# SPI GPIO expanders:
#
# CONFIG_GPIO_MAX7301 is not set
# CONFIG_GPIO_MCP23S08 is not set
# CONFIG_GPIO_MC33880 is not set
# CONFIG_GPIO_74X164 is not set

#
# AC97 GPIO expanders:
#

#
# LPC GPIO expanders:
#

#
# MODULbus GPIO expanders:
#
# CONFIG_GPIO_BCM_KONA is not set

#
# USB GPIO expanders:
#
# CONFIG_W1 is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_GENERIC_ADC_BATTERY is not set
# CONFIG_TEST_POWER is not set
# CONFIG_BATTERY_DS2780 is not set
# CONFIG_BATTERY_DS2781 is not set
# CONFIG_BATTERY_DS2782 is not set
CONFIG_BATTERY_SBS=m
CONFIG_BATTERY_BQ27x00=m
CONFIG_BATTERY_BQ27X00_I2C=y
CONFIG_BATTERY_BQ27X00_PLATFORM=y
# CONFIG_BATTERY_MAX17040 is not set
# CONFIG_BATTERY_MAX17042 is not set
# CONFIG_CHARGER_MAX8903 is not set
# CONFIG_CHARGER_LP8727 is not set
CONFIG_CHARGER_GPIO=y
# CONFIG_CHARGER_MANAGER is not set
# CONFIG_CHARGER_BQ2415X is not set
# CONFIG_CHARGER_BQ24190 is not set
# CONFIG_CHARGER_BQ24735 is not set
# CONFIG_CHARGER_SMB347 is not set
CONFIG_CHARGER_TPS65090=y
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_RESET_RESTART is not set
# CONFIG_POWER_AVS is not set
CONFIG_HWMON=y
# CONFIG_HWMON_VID is not set
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
# CONFIG_SENSORS_AD7314 is not set
# CONFIG_SENSORS_AD7414 is not set
# CONFIG_SENSORS_AD7418 is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ADT7310 is not set
# CONFIG_SENSORS_ADT7410 is not set
# CONFIG_SENSORS_ADT7411 is not set
# CONFIG_SENSORS_ADT7462 is not set
# CONFIG_SENSORS_ADT7470 is not set
# CONFIG_SENSORS_ADT7475 is not set
# CONFIG_SENSORS_ASC7621 is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_DS620 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_F75375S is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
# CONFIG_SENSORS_G760A is not set
# CONFIG_SENSORS_G762 is not set
# CONFIG_SENSORS_GPIO_FAN is not set
# CONFIG_SENSORS_HIH6130 is not set
# CONFIG_SENSORS_IIO_HWMON is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_JC42 is not set
# CONFIG_SENSORS_LINEAGE is not set
# CONFIG_SENSORS_LTC2945 is not set
# CONFIG_SENSORS_LTC4151 is not set
# CONFIG_SENSORS_LTC4215 is not set
# CONFIG_SENSORS_LTC4222 is not set
# CONFIG_SENSORS_LTC4245 is not set
# CONFIG_SENSORS_LTC4260 is not set
# CONFIG_SENSORS_LTC4261 is not set
# CONFIG_SENSORS_MAX1111 is not set
# CONFIG_SENSORS_MAX16065 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_MAX1668 is not set
# CONFIG_SENSORS_MAX197 is not set
# CONFIG_SENSORS_MAX6639 is not set
# CONFIG_SENSORS_MAX6642 is not set
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_MAX6697 is not set
# CONFIG_SENSORS_HTU21 is not set
# CONFIG_SENSORS_MCP3021 is not set
# CONFIG_SENSORS_ADCXX is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM70 is not set
# CONFIG_SENSORS_LM73 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_LM93 is not set
# CONFIG_SENSORS_LM95234 is not set
# CONFIG_SENSORS_LM95241 is not set
# CONFIG_SENSORS_LM95245 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
CONFIG_SENSORS_NTC_THERMISTOR=y
# CONFIG_SENSORS_NCT6683 is not set
# CONFIG_SENSORS_NCT6775 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_PMBUS is not set
# CONFIG_SENSORS_SHT15 is not set
# CONFIG_SENSORS_SHT21 is not set
# CONFIG_SENSORS_SHTC1 is not set
# CONFIG_SENSORS_DME1737 is not set
# CONFIG_SENSORS_EMC1403 is not set
# CONFIG_SENSORS_EMC2103 is not set
# CONFIG_SENSORS_EMC6W201 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_SCH56XX_COMMON is not set
# CONFIG_SENSORS_SCH5627 is not set
# CONFIG_SENSORS_SCH5636 is not set
# CONFIG_SENSORS_SMM665 is not set
# CONFIG_SENSORS_ADC128D818 is not set
# CONFIG_SENSORS_ADS1015 is not set
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_ADS7871 is not set
# CONFIG_SENSORS_AMC6821 is not set
# CONFIG_SENSORS_INA209 is not set
# CONFIG_SENSORS_INA2XX is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_TMP102 is not set
# CONFIG_SENSORS_TMP401 is not set
# CONFIG_SENSORS_TMP421 is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_W83781D is not set
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83795 is not set
# CONFIG_SENSORS_W83L785TS is not set
# CONFIG_SENSORS_W83L786NG is not set
# CONFIG_SENSORS_W83627HF is not set
# CONFIG_SENSORS_W83627EHF is not set
CONFIG_THERMAL=y
CONFIG_THERMAL_HWMON=y
CONFIG_THERMAL_OF=y
CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
# CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE is not set
# CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE is not set
# CONFIG_THERMAL_GOV_FAIR_SHARE is not set
CONFIG_THERMAL_GOV_STEP_WISE=y
# CONFIG_THERMAL_GOV_USER_SPACE is not set
# CONFIG_THERMAL_EMULATION is not set

#
# Texas Instruments thermal drivers
#
# CONFIG_TI_SOC_THERMAL is not set

#
# Samsung thermal drivers
#
CONFIG_EXYNOS_THERMAL=y
CONFIG_EXYNOS_THERMAL_CORE=y
CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_CORE=y
# CONFIG_WATCHDOG_NOWAYOUT is not set

#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
# CONFIG_GPIO_WATCHDOG is not set
# CONFIG_XILINX_WATCHDOG is not set
# CONFIG_ARM_SP805_WATCHDOG is not set
CONFIG_HAVE_S3C2410_WATCHDOG=y
CONFIG_S3C2410_WATCHDOG=y
# CONFIG_DW_WATCHDOG is not set
# CONFIG_MAX63XX_WATCHDOG is not set
# CONFIG_MEN_A21_WDT is not set

#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set
CONFIG_SSB_POSSIBLE=y

#
# Sonics Silicon Backplane
#
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y

#
# Broadcom specific AMBA
#
# CONFIG_BCMA is not set

#
# Multifunction device drivers
#
CONFIG_MFD_CORE=y
# CONFIG_MFD_AS3711 is not set
# CONFIG_MFD_AS3722 is not set
# CONFIG_PMIC_ADP5520 is not set
# CONFIG_MFD_AAT2870_CORE is not set
# CONFIG_MFD_BCM590XX is not set
# CONFIG_MFD_AXP20X is not set
CONFIG_MFD_CROS_EC=y
CONFIG_MFD_CROS_EC_I2C=y
CONFIG_MFD_CROS_EC_SPI=y
# CONFIG_MFD_ASIC3 is not set
# CONFIG_PMIC_DA903X is not set
# CONFIG_MFD_DA9052_SPI is not set
# CONFIG_MFD_DA9052_I2C is not set
# CONFIG_MFD_DA9055 is not set
# CONFIG_MFD_DA9063 is not set
# CONFIG_MFD_MC13XXX_SPI is not set
# CONFIG_MFD_MC13XXX_I2C is not set
# CONFIG_HTC_EGPIO is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_HTC_I2CPLD is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_88PM800 is not set
# CONFIG_MFD_88PM805 is not set
# CONFIG_MFD_88PM860X is not set
# CONFIG_MFD_MAX14577 is not set
CONFIG_MFD_MAX77686=y
# CONFIG_MFD_MAX77693 is not set
# CONFIG_MFD_MAX8907 is not set
# CONFIG_MFD_MAX8925 is not set
# CONFIG_MFD_MAX8997 is not set
# CONFIG_MFD_MAX8998 is not set
# CONFIG_EZX_PCAP is not set
# CONFIG_MFD_VIPERBOARD is not set
# CONFIG_MFD_RETU is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_PM8921_CORE is not set
# CONFIG_MFD_RTSX_USB is not set
# CONFIG_MFD_RC5T583 is not set
CONFIG_MFD_SEC_CORE=y
# CONFIG_MFD_SI476X_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SMSC is not set
# CONFIG_ABX500_CORE is not set
# CONFIG_MFD_STMPE is not set
CONFIG_MFD_SYSCON=y
# CONFIG_MFD_TI_AM335X_TSCADC is not set
# CONFIG_MFD_LP3943 is not set
# CONFIG_MFD_LP8788 is not set
# CONFIG_MFD_PALMAS is not set
# CONFIG_TPS6105X is not set
# CONFIG_TPS65010 is not set
# CONFIG_TPS6507X is not set
CONFIG_MFD_TPS65090=y
# CONFIG_MFD_TPS65217 is not set
# CONFIG_MFD_TPS65218 is not set
# CONFIG_MFD_TPS6586X is not set
# CONFIG_MFD_TPS65910 is not set
# CONFIG_MFD_TPS65912 is not set
# CONFIG_MFD_TPS65912_I2C is not set
# CONFIG_MFD_TPS65912_SPI is not set
# CONFIG_MFD_TPS80031 is not set
# CONFIG_TWL4030_CORE is not set
# CONFIG_TWL6040_CORE is not set
# CONFIG_MFD_WL1273_CORE is not set
# CONFIG_MFD_LM3533 is not set
# CONFIG_MFD_TC3589X is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_T7L66XB is not set
# CONFIG_MFD_TC6387XB is not set
# CONFIG_MFD_TC6393XB is not set
# CONFIG_MFD_ARIZONA_I2C is not set
# CONFIG_MFD_ARIZONA_SPI is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM831X_I2C is not set
# CONFIG_MFD_WM831X_SPI is not set
# CONFIG_MFD_WM8350_I2C is not set
CONFIG_MFD_WM8994=y
CONFIG_REGULATOR=y
# CONFIG_REGULATOR_DEBUG is not set
CONFIG_REGULATOR_FIXED_VOLTAGE=y
# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set
# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set
# CONFIG_REGULATOR_ACT8865 is not set
# CONFIG_REGULATOR_AD5398 is not set
# CONFIG_REGULATOR_ANATOP is not set
# CONFIG_REGULATOR_DA9210 is not set
# CONFIG_REGULATOR_FAN53555 is not set
# CONFIG_REGULATOR_GPIO is not set
# CONFIG_REGULATOR_ISL6271A is not set
# CONFIG_REGULATOR_LP3971 is not set
# CONFIG_REGULATOR_LP3972 is not set
# CONFIG_REGULATOR_LP872X is not set
# CONFIG_REGULATOR_LP8755 is not set
# CONFIG_REGULATOR_LTC3589 is not set
# CONFIG_REGULATOR_MAX1586 is not set
# CONFIG_REGULATOR_MAX8649 is not set
# CONFIG_REGULATOR_MAX8660 is not set
# CONFIG_REGULATOR_MAX8952 is not set
# CONFIG_REGULATOR_MAX8973 is not set
CONFIG_REGULATOR_MAX77686=y
# CONFIG_REGULATOR_PFUZE100 is not set
# CONFIG_REGULATOR_S2MPA01 is not set
CONFIG_REGULATOR_S2MPS11=y
CONFIG_REGULATOR_S5M8767=y
# CONFIG_REGULATOR_TPS51632 is not set
# CONFIG_REGULATOR_TPS62360 is not set
# CONFIG_REGULATOR_TPS65023 is not set
# CONFIG_REGULATOR_TPS6507X is not set
CONFIG_REGULATOR_TPS65090=y
# CONFIG_REGULATOR_TPS6524X is not set
CONFIG_REGULATOR_WM8994=y
CONFIG_MEDIA_SUPPORT=y

#
# Multimedia core support
#
CONFIG_MEDIA_CAMERA_SUPPORT=y
# CONFIG_MEDIA_ANALOG_TV_SUPPORT is not set
# CONFIG_MEDIA_DIGITAL_TV_SUPPORT is not set
# CONFIG_MEDIA_RADIO_SUPPORT is not set
# CONFIG_MEDIA_RC_SUPPORT is not set
CONFIG_MEDIA_CONTROLLER=y
CONFIG_VIDEO_DEV=y
CONFIG_VIDEO_V4L2_SUBDEV_API=y
CONFIG_VIDEO_V4L2=y
# CONFIG_VIDEO_ADV_DEBUG is not set
CONFIG_VIDEO_FIXED_MINOR_RANGES=y
CONFIG_VIDEOBUF2_CORE=m
CONFIG_VIDEOBUF2_MEMOPS=m
CONFIG_VIDEOBUF2_DMA_CONTIG=m
CONFIG_VIDEOBUF2_VMALLOC=m
# CONFIG_TTPCI_EEPROM is not set

#
# Media drivers
#
CONFIG_MEDIA_USB_SUPPORT=y

#
# Webcam devices
#
CONFIG_USB_VIDEO_CLASS=m
# CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV is not set
# CONFIG_USB_GSPCA is not set
# CONFIG_USB_PWC is not set
# CONFIG_VIDEO_CPIA2 is not set
# CONFIG_USB_ZR364XX is not set
# CONFIG_USB_STKWEBCAM is not set
# CONFIG_USB_S2255 is not set
# CONFIG_VIDEO_USBTV is not set

#
# Webcam, TV (analog/digital) USB devices
#
# CONFIG_VIDEO_EM28XX is not set
# CONFIG_V4L_PLATFORM_DRIVERS is not set
CONFIG_V4L_MEM2MEM_DRIVERS=y
# CONFIG_VIDEO_MEM2MEM_DEINTERLACE is not set
# CONFIG_VIDEO_SAMSUNG_S5P_G2D is not set
# CONFIG_VIDEO_SAMSUNG_S5P_JPEG is not set
CONFIG_VIDEO_SAMSUNG_S5P_MFC=m
# CONFIG_VIDEO_SAMSUNG_EXYNOS_GSC is not set
# CONFIG_VIDEO_SH_VEU is not set
# CONFIG_VIDEO_RENESAS_VSP1 is not set
CONFIG_V4L_TEST_DRIVERS=y
CONFIG_VIDEO_VIVI=m
# CONFIG_VIDEO_MEM2MEM_TESTDEV is not set

#
# Supported MMC/SDIO adapters
#
# CONFIG_CYPRESS_FIRMWARE is not set

#
# Media ancillary drivers (tuners, sensors, i2c, frontends)
#
CONFIG_MEDIA_SUBDRV_AUTOSELECT=y

#
# Audio decoders, processors and mixers
#

#
# RDS decoders
#

#
# Video decoders
#

#
# Video and audio decoders
#

#
# Video encoders
#

#
# Camera sensor devices
#

#
# Flash devices
#

#
# Video improvement chips
#

#
# Audio/Video compression chips
#

#
# Miscellaneous helper chips
#

#
# Sensors used on soc_camera driver
#

#
# Tools to develop new frontends
#
# CONFIG_DVB_DUMMY_FE is not set

#
# Graphics support
#

#
# Direct Rendering Manager
#
CONFIG_DRM=y
CONFIG_DRM_KMS_HELPER=y
CONFIG_DRM_KMS_FB_HELPER=y
# CONFIG_DRM_LOAD_EDID_FIRMWARE is not set

#
# I2C encoder or helper chips
#
# CONFIG_DRM_I2C_CH7006 is not set
# CONFIG_DRM_I2C_SIL164 is not set
# CONFIG_DRM_I2C_NXP_TDA998X is not set
CONFIG_DRM_PTN3460=y
CONFIG_DRM_PANEL_BINDER=y
CONFIG_DRM_PS8622=y
CONFIG_DRM_EXYNOS=y
CONFIG_DRM_EXYNOS_DMABUF=y
CONFIG_DRM_EXYNOS_FIMD=y
# CONFIG_DRM_EXYNOS_DPI is not set
# CONFIG_DRM_EXYNOS_DSI is not set
CONFIG_DRM_EXYNOS_DP=y
CONFIG_DRM_EXYNOS_HDMI=y
# CONFIG_DRM_EXYNOS_VIDI is not set
# CONFIG_DRM_EXYNOS_G2D is not set
# CONFIG_DRM_EXYNOS_IPP is not set
# CONFIG_DRM_UDL is not set
# CONFIG_DRM_ARMADA is not set
# CONFIG_DRM_TILCDC is not set
CONFIG_DRM_PANEL=y

#
# Display Panels
#
# CONFIG_DRM_PANEL_SIMPLE is not set
# CONFIG_DRM_PANEL_LD9040 is not set
# CONFIG_DRM_PANEL_S6E8AA0 is not set
CONFIG_DRM_PANEL_EDP_LVDS=y

#
# Frame buffer Devices
#
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
# CONFIG_FB_DDC is not set
# CONFIG_FB_BOOT_VESA_SUPPORT is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_SYS_FOPS is not set
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
CONFIG_FB_MODE_HELPERS=y
# CONFIG_FB_TILEBLITTING is not set

#
# Frame buffer hardware drivers
#
# CONFIG_FB_ARMCLCD is not set
# CONFIG_FB_UVESA is not set
# CONFIG_FB_OPENCORES is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_S3C is not set
# CONFIG_FB_SMSCUFX is not set
# CONFIG_FB_UDL is not set
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
# CONFIG_FB_BROADSHEET is not set
# CONFIG_FB_AUO_K190X is not set
# CONFIG_FB_SIMPLE is not set
CONFIG_EXYNOS_VIDEO=y
CONFIG_EXYNOS_MIPI_DSI=y
# CONFIG_EXYNOS_LCD_S6E8AX0 is not set
# CONFIG_FB_SSD1307 is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
# CONFIG_LCD_L4F00242T03 is not set
# CONFIG_LCD_LMS283GF05 is not set
# CONFIG_LCD_LTV350QV is not set
# CONFIG_LCD_ILI922X is not set
# CONFIG_LCD_ILI9320 is not set
# CONFIG_LCD_TDO24M is not set
# CONFIG_LCD_VGG2432A4 is not set
CONFIG_LCD_PLATFORM=y
# CONFIG_LCD_S6E63M0 is not set
# CONFIG_LCD_LD9040 is not set
# CONFIG_LCD_AMS369FG06 is not set
# CONFIG_LCD_LMS501KF03 is not set
# CONFIG_LCD_HX8357 is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_GENERIC=y
CONFIG_BACKLIGHT_PWM=y
# CONFIG_BACKLIGHT_ADP8860 is not set
# CONFIG_BACKLIGHT_ADP8870 is not set
# CONFIG_BACKLIGHT_LM3630A is not set
# CONFIG_BACKLIGHT_LM3639 is not set
# CONFIG_BACKLIGHT_LP855X is not set
# CONFIG_BACKLIGHT_GPIO is not set
# CONFIG_BACKLIGHT_LV5207LP is not set
# CONFIG_BACKLIGHT_BD6107 is not set
# CONFIG_VGASTATE is not set
CONFIG_VIDEOMODE_HELPERS=y
CONFIG_HDMI=y

#
# Console display driver support
#
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
CONFIG_LOGO_LINUX_CLUT224=y
CONFIG_SOUND=y
# CONFIG_SOUND_OSS_CORE is not set
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_DMAENGINE_PCM=y
CONFIG_SND_HWDEP=m
CONFIG_SND_RAWMIDI=m
CONFIG_SND_COMPRESS_OFFLOAD=y
CONFIG_SND_JACK=y
CONFIG_SND_SEQUENCER=y
CONFIG_SND_SEQ_DUMMY=y
# CONFIG_SND_MIXER_OSS is not set
# CONFIG_SND_PCM_OSS is not set
# CONFIG_SND_SEQUENCER_OSS is not set
CONFIG_SND_HRTIMER=y
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
CONFIG_SND_DYNAMIC_MINORS=y
CONFIG_SND_MAX_CARDS=32
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
CONFIG_SND_RAWMIDI_SEQ=m
# CONFIG_SND_OPL3_LIB_SEQ is not set
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
# CONFIG_SND_EMU10K1_SEQ is not set
CONFIG_SND_DRIVERS=y
# CONFIG_SND_DUMMY is not set
# CONFIG_SND_ALOOP is not set
# CONFIG_SND_VIRMIDI is not set
# CONFIG_SND_MTPAV is not set
# CONFIG_SND_SERIAL_U16550 is not set
# CONFIG_SND_MPU401 is not set

#
# HD-Audio
#
# CONFIG_SND_ARM is not set
# CONFIG_SND_SPI is not set
CONFIG_SND_USB=y
CONFIG_SND_USB_AUDIO=m
# CONFIG_SND_USB_UA101 is not set
# CONFIG_SND_USB_CAIAQ is not set
# CONFIG_SND_USB_6FIRE is not set
# CONFIG_SND_USB_HIFACE is not set
# CONFIG_SND_BCD2000 is not set
CONFIG_SND_SOC=y
CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM=y
# CONFIG_SND_ATMEL_SOC is not set
# CONFIG_SND_DESIGNWARE_I2S is not set

#
# SoC Audio for Freescale CPUs
#

#
# Common SoC Audio options for Freescale CPUs:
#
# CONFIG_SND_SOC_FSL_SAI is not set
# CONFIG_SND_SOC_FSL_SSI is not set
# CONFIG_SND_SOC_FSL_SPDIF is not set
# CONFIG_SND_SOC_FSL_ESAI is not set
# CONFIG_SND_SOC_IMX_AUDMUX is not set
CONFIG_SND_SOC_SAMSUNG=y
CONFIG_SND_S3C_DMA=y
CONFIG_SND_SAMSUNG_I2S=y
CONFIG_SND_SOC_SAMSUNG_SMDK_WM8994=y
# CONFIG_SND_SOC_SAMSUNG_SMDK_SPDIF is not set
# CONFIG_SND_SOC_SMDK_WM8994_PCM is not set
CONFIG_SND_SOC_SNOW=y
CONFIG_SND_SOC_I2C_AND_SPI=y

#
# CODEC drivers
#
CONFIG_SND_SOC_WM_HUBS=y
# CONFIG_SND_SOC_ADAU1701 is not set
# CONFIG_SND_SOC_AK4104 is not set
# CONFIG_SND_SOC_AK4554 is not set
# CONFIG_SND_SOC_AK4642 is not set
# CONFIG_SND_SOC_AK5386 is not set
# CONFIG_SND_SOC_ALC5623 is not set
# CONFIG_SND_SOC_CS42L52 is not set
# CONFIG_SND_SOC_CS42L56 is not set
# CONFIG_SND_SOC_CS42L73 is not set
# CONFIG_SND_SOC_CS4270 is not set
# CONFIG_SND_SOC_CS4271 is not set
# CONFIG_SND_SOC_CS42XX8_I2C is not set
# CONFIG_SND_SOC_HDMI_CODEC is not set
CONFIG_SND_SOC_MAX98090=y
CONFIG_SND_SOC_MAX98095=y
# CONFIG_SND_SOC_PCM1681 is not set
# CONFIG_SND_SOC_PCM1792A is not set
# CONFIG_SND_SOC_PCM512x_I2C is not set
# CONFIG_SND_SOC_PCM512x_SPI is not set
# CONFIG_SND_SOC_SGTL5000 is not set
# CONFIG_SND_SOC_SIRF_AUDIO_CODEC is not set
# CONFIG_SND_SOC_SPDIF is not set
# CONFIG_SND_SOC_STA350 is not set
# CONFIG_SND_SOC_TAS5086 is not set
# CONFIG_SND_SOC_TLV320AIC3X is not set
# CONFIG_SND_SOC_WM8510 is not set
# CONFIG_SND_SOC_WM8523 is not set
# CONFIG_SND_SOC_WM8580 is not set
# CONFIG_SND_SOC_WM8711 is not set
# CONFIG_SND_SOC_WM8728 is not set
# CONFIG_SND_SOC_WM8731 is not set
# CONFIG_SND_SOC_WM8737 is not set
# CONFIG_SND_SOC_WM8741 is not set
# CONFIG_SND_SOC_WM8750 is not set
# CONFIG_SND_SOC_WM8753 is not set
# CONFIG_SND_SOC_WM8770 is not set
# CONFIG_SND_SOC_WM8776 is not set
# CONFIG_SND_SOC_WM8804 is not set
# CONFIG_SND_SOC_WM8903 is not set
# CONFIG_SND_SOC_WM8962 is not set
CONFIG_SND_SOC_WM8994=y
# CONFIG_SND_SOC_TPA6130A2 is not set
# CONFIG_SND_SIMPLE_CARD is not set
# CONFIG_SOUND_PRIME is not set

#
# HID support
#
CONFIG_HID=y
CONFIG_HID_BATTERY_STRENGTH=y
CONFIG_HIDRAW=y
# CONFIG_UHID is not set
CONFIG_HID_GENERIC=y

#
# Special HID drivers
#
# CONFIG_HID_A4TECH is not set
# CONFIG_HID_ACRUX is not set
CONFIG_HID_APPLE=m
# CONFIG_HID_APPLEIR is not set
# CONFIG_HID_AUREAL is not set
# CONFIG_HID_BELKIN is not set
CONFIG_HID_CHERRY=m
# CONFIG_HID_CHICONY is not set
# CONFIG_HID_PRODIKEYS is not set
# CONFIG_HID_CP2112 is not set
# CONFIG_HID_CYPRESS is not set
# CONFIG_HID_DRAGONRISE is not set
# CONFIG_HID_EMS_FF is not set
# CONFIG_HID_ELECOM is not set
# CONFIG_HID_ELO is not set
# CONFIG_HID_EZKEY is not set
# CONFIG_HID_HOLTEK is not set
# CONFIG_HID_HUION is not set
# CONFIG_HID_KEYTOUCH is not set
# CONFIG_HID_KYE is not set
# CONFIG_HID_UCLOGIC is not set
# CONFIG_HID_WALTOP is not set
# CONFIG_HID_GYRATION is not set
# CONFIG_HID_ICADE is not set
# CONFIG_HID_TWINHAN is not set
# CONFIG_HID_KENSINGTON is not set
# CONFIG_HID_LCPOWER is not set
# CONFIG_HID_LENOVO_TPKBD is not set
CONFIG_HID_LOGITECH=m
CONFIG_HID_LOGITECH_DJ=m
# CONFIG_LOGITECH_FF is not set
# CONFIG_LOGIRUMBLEPAD2_FF is not set
# CONFIG_LOGIG940_FF is not set
# CONFIG_LOGIWHEELS_FF is not set
CONFIG_HID_MAGICMOUSE=m
CONFIG_HID_MICROSOFT=m
# CONFIG_HID_MONTEREY is not set
CONFIG_HID_MULTITOUCH=m
# CONFIG_HID_NTRIG is not set
# CONFIG_HID_ORTEK is not set
# CONFIG_HID_PANTHERLORD is not set
# CONFIG_HID_PETALYNX is not set
# CONFIG_HID_PICOLCD is not set
CONFIG_HID_PRIMAX=m
# CONFIG_HID_ROCCAT is not set
# CONFIG_HID_SAITEK is not set
# CONFIG_HID_SAMSUNG is not set
CONFIG_HID_SONY=m
# CONFIG_SONY_FF is not set
# CONFIG_HID_SPEEDLINK is not set
# CONFIG_HID_STEELSERIES is not set
# CONFIG_HID_SUNPLUS is not set
# CONFIG_HID_RMI is not set
# CONFIG_HID_GREENASIA is not set
# CONFIG_HID_SMARTJOYPLUS is not set
# CONFIG_HID_TIVO is not set
# CONFIG_HID_TOPSEED is not set
# CONFIG_HID_THINGM is not set
# CONFIG_HID_THRUSTMASTER is not set
# CONFIG_HID_WACOM is not set
CONFIG_HID_WIIMOTE=m
# CONFIG_HID_XINMO is not set
# CONFIG_HID_ZEROPLUS is not set
# CONFIG_HID_ZYDACRON is not set
# CONFIG_HID_SENSOR_HUB is not set

#
# USB HID support
#
CONFIG_USB_HID=y
# CONFIG_HID_PID is not set
CONFIG_USB_HIDDEV=y

#
# I2C HID support
#
# CONFIG_I2C_HID is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

#
# Miscellaneous USB options
#
# CONFIG_USB_DEFAULT_PERSIST is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_OTG is not set
# CONFIG_USB_OTG_WHITELIST is not set
# CONFIG_USB_OTG_BLACKLIST_HUB is not set
# CONFIG_USB_OTG_FSM is not set
CONFIG_USB_MON=y
# CONFIG_USB_WUSB_CBAF is not set

#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_XHCI_PLATFORM=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_EHCI_TT_NEWSCHED=y
CONFIG_USB_EHCI_EXYNOS=y
# CONFIG_USB_EHCI_HCD_PLATFORM is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_ISP1760_HCD is not set
# CONFIG_USB_ISP1362_HCD is not set
# CONFIG_USB_FUSBH200_HCD is not set
# CONFIG_USB_FOTG210_HCD is not set
# CONFIG_USB_MAX3421_HCD is not set
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_EXYNOS=y
# CONFIG_USB_OHCI_HCD_PLATFORM is not set
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_HCD_TEST_MODE is not set

#
# USB Device Class drivers
#
CONFIG_USB_ACM=y
# CONFIG_USB_PRINTER is not set
CONFIG_USB_WDM=m
# CONFIG_USB_TMC is not set

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#

#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=y
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_REALTEK is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
# CONFIG_USB_STORAGE_ONETOUCH is not set
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
# CONFIG_USB_STORAGE_ENE_UB6250 is not set
# CONFIG_USB_UAS is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set
# CONFIG_USB_MUSB_HDRC is not set
CONFIG_USB_DWC3=y
CONFIG_USB_DWC3_HOST=y

#
# Platform Glue Driver Support
#
CONFIG_USB_DWC3_EXYNOS=y

#
# Debugging features
#
# CONFIG_USB_DWC3_DEBUG is not set
# CONFIG_USB_DWC2 is not set
# CONFIG_USB_CHIPIDEA is not set

#
# USB port drivers
#
CONFIG_USB_SERIAL=y
# CONFIG_USB_SERIAL_CONSOLE is not set
CONFIG_USB_SERIAL_GENERIC=y
# CONFIG_USB_SERIAL_SIMPLE is not set
# CONFIG_USB_SERIAL_AIRCABLE is not set
# CONFIG_USB_SERIAL_ARK3116 is not set
# CONFIG_USB_SERIAL_BELKIN is not set
# CONFIG_USB_SERIAL_CH341 is not set
# CONFIG_USB_SERIAL_WHITEHEAT is not set
# CONFIG_USB_SERIAL_DIGI_ACCELEPORT is not set
CONFIG_USB_SERIAL_CP210X=m
# CONFIG_USB_SERIAL_CYPRESS_M8 is not set
# CONFIG_USB_SERIAL_EMPEG is not set
CONFIG_USB_SERIAL_FTDI_SIO=m
# CONFIG_USB_SERIAL_VISOR is not set
# CONFIG_USB_SERIAL_IPAQ is not set
# CONFIG_USB_SERIAL_IR is not set
# CONFIG_USB_SERIAL_EDGEPORT is not set
# CONFIG_USB_SERIAL_EDGEPORT_TI is not set
# CONFIG_USB_SERIAL_F81232 is not set
# CONFIG_USB_SERIAL_GARMIN is not set
# CONFIG_USB_SERIAL_IPW is not set
# CONFIG_USB_SERIAL_IUU is not set
# CONFIG_USB_SERIAL_KEYSPAN_PDA is not set
CONFIG_USB_SERIAL_KEYSPAN=m
# CONFIG_USB_SERIAL_KEYSPAN_MPR is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28 is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28X is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28XA is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA28XB is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA19 is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA18X is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA19W is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA19QW is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA19QI is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA49W is not set
# CONFIG_USB_SERIAL_KEYSPAN_USA49WLC is not set
# CONFIG_USB_SERIAL_KLSI is not set
# CONFIG_USB_SERIAL_KOBIL_SCT is not set
# CONFIG_USB_SERIAL_MCT_U232 is not set
# CONFIG_USB_SERIAL_METRO is not set
# CONFIG_USB_SERIAL_MOS7720 is not set
# CONFIG_USB_SERIAL_MOS7840 is not set
# CONFIG_USB_SERIAL_MXUPORT is not set
# CONFIG_USB_SERIAL_NAVMAN is not set
CONFIG_USB_SERIAL_PL2303=m
# CONFIG_USB_SERIAL_OTI6858 is not set
# CONFIG_USB_SERIAL_QCAUX is not set
CONFIG_USB_SERIAL_QUALCOMM=m
# CONFIG_USB_SERIAL_SPCP8X5 is not set
# CONFIG_USB_SERIAL_SAFE is not set
CONFIG_USB_SERIAL_SIERRAWIRELESS=m
# CONFIG_USB_SERIAL_SYMBOL is not set
# CONFIG_USB_SERIAL_TI is not set
# CONFIG_USB_SERIAL_CYBERJACK is not set
# CONFIG_USB_SERIAL_XIRCOM is not set
CONFIG_USB_SERIAL_WWAN=m
CONFIG_USB_SERIAL_OPTION=m
# CONFIG_USB_SERIAL_OMNINET is not set
# CONFIG_USB_SERIAL_OPTICON is not set
# CONFIG_USB_SERIAL_XSENS_MT is not set
# CONFIG_USB_SERIAL_WISHBONE is not set
# CONFIG_USB_SERIAL_ZTE is not set
# CONFIG_USB_SERIAL_SSU100 is not set
# CONFIG_USB_SERIAL_QT2 is not set
# CONFIG_USB_SERIAL_DEBUG is not set

#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
# CONFIG_USB_APPLEDISPLAY is not set
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
# CONFIG_USB_EHSET_TEST_FIXTURE is not set
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_YUREX is not set
CONFIG_USB_EZUSB_FX2=m
# CONFIG_USB_HSIC_USB3503 is not set

#
# USB Physical Layer drivers
#
# CONFIG_USB_PHY is not set
# CONFIG_NOP_USB_XCEIV is not set
# CONFIG_AM335X_PHY_USB is not set
# CONFIG_SAMSUNG_USB2PHY is not set
# CONFIG_SAMSUNG_USB3PHY is not set
# CONFIG_USB_GPIO_VBUS is not set
# CONFIG_USB_ISP1301 is not set
# CONFIG_USB_ULPI is not set
# CONFIG_USB_GADGET is not set
CONFIG_MMC=y
# CONFIG_MMC_DEBUG is not set
# CONFIG_MMC_CLKGATE is not set

#
# MMC/SD/SDIO Card Drivers
#
CONFIG_MMC_BLOCK=y
CONFIG_MMC_BLOCK_MINORS=16
CONFIG_MMC_BLOCK_BOUNCE=y
# CONFIG_SDIO_UART is not set
CONFIG_MMC_TEST=m

#
# MMC/SD/SDIO Host Controller Drivers
#
# CONFIG_MMC_ARMMMCI is not set
# CONFIG_MMC_SDHCI is not set
CONFIG_MMC_DW=y
CONFIG_MMC_DW_IDMAC=y
CONFIG_MMC_DW_PLTFM=y
CONFIG_MMC_DW_EXYNOS=y
# CONFIG_MMC_DW_K3 is not set
# CONFIG_MMC_VUB300 is not set
# CONFIG_MMC_USHC is not set
# CONFIG_MMC_USDHI6ROL0 is not set
# CONFIG_MEMSTICK is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y

#
# LED drivers
#
# CONFIG_LEDS_LM3530 is not set
# CONFIG_LEDS_LM3642 is not set
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_GPIO is not set
# CONFIG_LEDS_LP3944 is not set
# CONFIG_LEDS_LP5521 is not set
# CONFIG_LEDS_LP5523 is not set
# CONFIG_LEDS_LP5562 is not set
# CONFIG_LEDS_LP8501 is not set
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_PCA963X is not set
# CONFIG_LEDS_DAC124S085 is not set
# CONFIG_LEDS_PWM is not set
# CONFIG_LEDS_REGULATOR is not set
# CONFIG_LEDS_BD2802 is not set
# CONFIG_LEDS_LT3593 is not set
# CONFIG_LEDS_TCA6507 is not set
# CONFIG_LEDS_LM355x is not set

#
# LED driver for blink(1) USB RGB LED is under Special HID drivers (HID_THINGM)
#
# CONFIG_LEDS_BLINKM is not set

#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
# CONFIG_LEDS_TRIGGER_TIMER is not set
# CONFIG_LEDS_TRIGGER_ONESHOT is not set
# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set
# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set
# CONFIG_LEDS_TRIGGER_CPU is not set
# CONFIG_LEDS_TRIGGER_GPIO is not set
# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set

#
# iptables trigger is under Netfilter config (LED target)
#
# CONFIG_LEDS_TRIGGER_TRANSIENT is not set
# CONFIG_LEDS_TRIGGER_CAMERA is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_EDAC is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_SYSTOHC=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set

#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set

#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
# CONFIG_RTC_DRV_DS1672 is not set
# CONFIG_RTC_DRV_DS3232 is not set
# CONFIG_RTC_DRV_HYM8563 is not set
# CONFIG_RTC_DRV_MAX6900 is not set
CONFIG_RTC_DRV_MAX77686=y
# CONFIG_RTC_DRV_RS5C372 is not set
# CONFIG_RTC_DRV_ISL1208 is not set
# CONFIG_RTC_DRV_ISL12022 is not set
# CONFIG_RTC_DRV_ISL12057 is not set
# CONFIG_RTC_DRV_X1205 is not set
# CONFIG_RTC_DRV_PCF2127 is not set
# CONFIG_RTC_DRV_PCF8523 is not set
# CONFIG_RTC_DRV_PCF8563 is not set
# CONFIG_RTC_DRV_PCF8583 is not set
# CONFIG_RTC_DRV_M41T80 is not set
# CONFIG_RTC_DRV_BQ32K is not set
# CONFIG_RTC_DRV_S35390A is not set
# CONFIG_RTC_DRV_FM3130 is not set
# CONFIG_RTC_DRV_RX8581 is not set
# CONFIG_RTC_DRV_RX8025 is not set
# CONFIG_RTC_DRV_EM3027 is not set
# CONFIG_RTC_DRV_RV3029C2 is not set
CONFIG_RTC_DRV_S5M=y

#
# SPI RTC drivers
#
# CONFIG_RTC_DRV_M41T93 is not set
# CONFIG_RTC_DRV_M41T94 is not set
# CONFIG_RTC_DRV_DS1305 is not set
# CONFIG_RTC_DRV_DS1343 is not set
# CONFIG_RTC_DRV_DS1347 is not set
# CONFIG_RTC_DRV_DS1390 is not set
# CONFIG_RTC_DRV_MAX6902 is not set
# CONFIG_RTC_DRV_R9701 is not set
# CONFIG_RTC_DRV_RS5C348 is not set
# CONFIG_RTC_DRV_DS3234 is not set
# CONFIG_RTC_DRV_PCF2123 is not set
# CONFIG_RTC_DRV_RX4581 is not set
# CONFIG_RTC_DRV_MCP795 is not set

#
# Platform RTC drivers
#
# CONFIG_RTC_DRV_CMOS is not set
# CONFIG_RTC_DRV_DS1286 is not set
# CONFIG_RTC_DRV_DS1511 is not set
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_DS1742 is not set
# CONFIG_RTC_DRV_STK17TA8 is not set
# CONFIG_RTC_DRV_M48T86 is not set
# CONFIG_RTC_DRV_M48T35 is not set
# CONFIG_RTC_DRV_M48T59 is not set
# CONFIG_RTC_DRV_MSM6242 is not set
# CONFIG_RTC_DRV_BQ4802 is not set
# CONFIG_RTC_DRV_RP5C01 is not set
# CONFIG_RTC_DRV_V3020 is not set
# CONFIG_RTC_DRV_DS2404 is not set

#
# on-CPU RTC drivers
#
CONFIG_HAVE_S3C_RTC=y
CONFIG_RTC_DRV_S3C=m
# CONFIG_RTC_DRV_PL030 is not set
# CONFIG_RTC_DRV_PL031 is not set
# CONFIG_RTC_DRV_SNVS is not set
# CONFIG_RTC_DRV_MOXART is not set
# CONFIG_RTC_DRV_XGENE is not set

#
# HID Sensor RTC drivers
#
# CONFIG_RTC_DRV_HID_SENSOR_TIME is not set
CONFIG_DMADEVICES=y
# CONFIG_DMADEVICES_DEBUG is not set

#
# DMA Devices
#
# CONFIG_AMBA_PL08X is not set
# CONFIG_DW_DMAC_CORE is not set
# CONFIG_DW_DMAC is not set
CONFIG_PL330_DMA=y
# CONFIG_FSL_EDMA is not set
CONFIG_DMA_ENGINE=y
CONFIG_DMA_OF=y

#
# DMA Clients
#
# CONFIG_ASYNC_TX_DMA is not set
# CONFIG_DMATEST is not set
CONFIG_AUXDISPLAY=y
# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set

#
# Virtio drivers
#
# CONFIG_VIRTIO_MMIO is not set

#
# Microsoft Hyper-V guest support
#
CONFIG_STAGING=y
# CONFIG_USBIP_CORE is not set
# CONFIG_W35UND is not set
# CONFIG_PRISM2_USB is not set
# CONFIG_COMEDI is not set
# CONFIG_RTLLIB is not set
# CONFIG_R8712U is not set
# CONFIG_R8188EU is not set
# CONFIG_R8723AU is not set
# CONFIG_TRANZPORT is not set
# CONFIG_LINE6_USB is not set
# CONFIG_USB_SERIAL_QUATECH2 is not set
# CONFIG_VT6656 is not set

#
# IIO staging drivers
#

#
# Accelerometers
#
# CONFIG_ADIS16201 is not set
# CONFIG_ADIS16203 is not set
# CONFIG_ADIS16204 is not set
# CONFIG_ADIS16209 is not set
# CONFIG_ADIS16220 is not set
# CONFIG_ADIS16240 is not set
# CONFIG_LIS3L02DQ is not set

#
# Analog to digital converters
#
# CONFIG_AD7291 is not set
# CONFIG_AD7606 is not set
# CONFIG_AD7780 is not set
# CONFIG_AD7816 is not set
# CONFIG_AD7192 is not set
# CONFIG_AD7280 is not set

#
# Analog digital bi-direction converters
#
# CONFIG_ADT7316 is not set

#
# Capacitance to digital converters
#
# CONFIG_AD7150 is not set
# CONFIG_AD7152 is not set
# CONFIG_AD7746 is not set

#
# Direct Digital Synthesis
#
# CONFIG_AD5930 is not set
# CONFIG_AD9832 is not set
# CONFIG_AD9834 is not set
# CONFIG_AD9850 is not set
# CONFIG_AD9852 is not set
# CONFIG_AD9910 is not set
# CONFIG_AD9951 is not set

#
# Digital gyroscope sensors
#
# CONFIG_ADIS16060 is not set

#
# Network Analyzer, Impedance Converters
#
# CONFIG_AD5933 is not set

#
# Light sensors
#
CONFIG_SENSORS_ISL29018=m
# CONFIG_SENSORS_ISL29028 is not set
CONFIG_TSL2583=m
# CONFIG_TSL2x7x is not set

#
# Magnetometer sensors
#
# CONFIG_SENSORS_HMC5843 is not set

#
# Active energy metering IC
#
# CONFIG_ADE7753 is not set
# CONFIG_ADE7754 is not set
# CONFIG_ADE7758 is not set
# CONFIG_ADE7759 is not set
# CONFIG_ADE7854 is not set

#
# Resolver to digital converters
#
# CONFIG_AD2S90 is not set
# CONFIG_AD2S1200 is not set
# CONFIG_AD2S1210 is not set

#
# Triggers - standalone
#
# CONFIG_IIO_SIMPLE_DUMMY is not set
# CONFIG_USB_ENESTORAGE is not set
# CONFIG_BCM_WIMAX is not set
# CONFIG_FT1000 is not set

#
# Speakup console speech
#
# CONFIG_SPEAKUP is not set
# CONFIG_TOUCHSCREEN_CLEARPAD_TM1217 is not set
# CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4 is not set
# CONFIG_STAGING_MEDIA is not set

#
# Android
#
# CONFIG_ANDROID is not set
# CONFIG_USB_WPAN_HCD is not set
CONFIG_WIMAX_GDM72XX=m
# CONFIG_WIMAX_GDM72XX_QOS is not set
# CONFIG_WIMAX_GDM72XX_K_MODE is not set
# CONFIG_WIMAX_GDM72XX_WIMAX2 is not set
CONFIG_WIMAX_GDM72XX_USB=y
# CONFIG_WIMAX_GDM72XX_SDIO is not set
CONFIG_WIMAX_GDM72XX_USB_PM=y
# CONFIG_LTE_GDM724X is not set
# CONFIG_CED1401 is not set
# CONFIG_DRM_IMX is not set
# CONFIG_DGRP is not set
# CONFIG_LUSTRE_FS is not set
# CONFIG_XILLYBUS is not set
# CONFIG_DGAP is not set
# CONFIG_GS_FPGABOOT is not set

#
# SOC (System On Chip) specific Drivers
#
CONFIG_CLKDEV_LOOKUP=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y

#
# Common Clock Framework
#
# CONFIG_COMMON_CLK_MAX77686 is not set
# CONFIG_COMMON_CLK_SI5351 is not set
# CONFIG_COMMON_CLK_SI570 is not set
# CONFIG_COMMON_CLK_S2MPS11 is not set
# CONFIG_COMMON_CLK_QCOM is not set
CONFIG_COMMON_CLK_SAMSUNG=y

#
# Hardware Spinlock drivers
#
CONFIG_CLKSRC_OF=y
CONFIG_CLKSRC_EXYNOS_MCT=y
# CONFIG_SH_TIMER_CMT is not set
# CONFIG_SH_TIMER_MTU2 is not set
# CONFIG_SH_TIMER_TMU is not set
# CONFIG_EM_TIMER_STI is not set
# CONFIG_CLKSRC_VERSATILE is not set
# CONFIG_MAILBOX is not set
CONFIG_IOMMU_API=y
CONFIG_IOMMU_SUPPORT=y
CONFIG_OF_IOMMU=y
CONFIG_EXYNOS_IOMMU=y
# CONFIG_EXYNOS_IOMMU_DEBUG is not set

#
# Remoteproc drivers
#
# CONFIG_STE_MODEM_RPROC is not set

#
# Rpmsg drivers
#
CONFIG_PM_DEVFREQ=y

#
# DEVFREQ Governors
#
CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y
# CONFIG_DEVFREQ_GOV_PERFORMANCE is not set
# CONFIG_DEVFREQ_GOV_POWERSAVE is not set
# CONFIG_DEVFREQ_GOV_USERSPACE is not set

#
# DEVFREQ Drivers
#
CONFIG_ARM_EXYNOS5_BUS_DEVFREQ=y
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
CONFIG_IIO=y
# CONFIG_IIO_BUFFER is not set
# CONFIG_IIO_TRIGGER is not set

#
# Accelerometers
#
# CONFIG_BMA180 is not set
# CONFIG_IIO_ST_ACCEL_3AXIS is not set
# CONFIG_KXSD9 is not set
# CONFIG_MMA8452 is not set

#
# Analog to digital converters
#
# CONFIG_AD7266 is not set
# CONFIG_AD7298 is not set
# CONFIG_AD7476 is not set
# CONFIG_AD7791 is not set
# CONFIG_AD7793 is not set
# CONFIG_AD7887 is not set
# CONFIG_AD7923 is not set
# CONFIG_AD799X is not set
CONFIG_EXYNOS_ADC=y
# CONFIG_MAX1363 is not set
# CONFIG_MCP320X is not set
# CONFIG_MCP3422 is not set
# CONFIG_NAU7802 is not set
# CONFIG_TI_ADC081C is not set
# CONFIG_VF610_ADC is not set

#
# Amplifiers
#
# CONFIG_AD8366 is not set

#
# Hid Sensor IIO Common
#

#
# Digital to analog converters
#
# CONFIG_AD5064 is not set
# CONFIG_AD5360 is not set
# CONFIG_AD5380 is not set
# CONFIG_AD5421 is not set
# CONFIG_AD5446 is not set
# CONFIG_AD5449 is not set
# CONFIG_AD5504 is not set
# CONFIG_AD5624R_SPI is not set
# CONFIG_AD5686 is not set
# CONFIG_AD5755 is not set
# CONFIG_AD5764 is not set
# CONFIG_AD5791 is not set
# CONFIG_AD7303 is not set
# CONFIG_MAX517 is not set
# CONFIG_MCP4725 is not set

#
# Frequency Synthesizers DDS/PLL
#

#
# Clock Generator/Distribution
#
# CONFIG_AD9523 is not set

#
# Phase-Locked Loop (PLL) frequency synthesizers
#
# CONFIG_ADF4350 is not set

#
# Digital gyroscope sensors
#
# CONFIG_ADIS16080 is not set
# CONFIG_ADIS16130 is not set
# CONFIG_ADIS16136 is not set
# CONFIG_ADIS16260 is not set
# CONFIG_ADXRS450 is not set
# CONFIG_IIO_ST_GYRO_3AXIS is not set
# CONFIG_ITG3200 is not set

#
# Humidity sensors
#
# CONFIG_DHT11 is not set
# CONFIG_SI7005 is not set

#
# Inertial measurement units
#
# CONFIG_ADIS16400 is not set
# CONFIG_ADIS16480 is not set
# CONFIG_INV_MPU6050_IIO is not set

#
# Light sensors
#
# CONFIG_ADJD_S311 is not set
# CONFIG_APDS9300 is not set
# CONFIG_CM32181 is not set
# CONFIG_CM36651 is not set
# CONFIG_GP2AP020A00F is not set
# CONFIG_LTR501 is not set
# CONFIG_TCS3472 is not set
CONFIG_SENSORS_TSL2563=m
# CONFIG_TSL4531 is not set
# CONFIG_VCNL4000 is not set

#
# Magnetometer sensors
#
# CONFIG_AK8975 is not set
# CONFIG_MAG3110 is not set
# CONFIG_IIO_ST_MAGN_3AXIS is not set

#
# Inclinometer sensors
#

#
# Pressure sensors
#
# CONFIG_MPL115 is not set
# CONFIG_MPL3115 is not set
# CONFIG_IIO_ST_PRESS is not set

#
# Lightning sensors
#
# CONFIG_AS3935 is not set

#
# Temperature sensors
#
# CONFIG_MLX90614 is not set
# CONFIG_TMP006 is not set
CONFIG_PWM=y
CONFIG_PWM_SYSFS=y
# CONFIG_PWM_FSL_FTM is not set
# CONFIG_PWM_PCA9685 is not set
CONFIG_PWM_SAMSUNG=y
CONFIG_IRQCHIP=y
CONFIG_ARM_GIC=y
# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set
# CONFIG_FMC is not set

#
# PHY Subsystem
#
CONFIG_GENERIC_PHY=y
# CONFIG_PHY_EXYNOS_MIPI_VIDEO is not set
CONFIG_PHY_EXYNOS_DP_VIDEO=y
# CONFIG_BCM_KONA_USB2_PHY is not set
# CONFIG_PHY_EXYNOS5250_SATA is not set
CONFIG_PHY_SAMSUNG_USB2=y
CONFIG_PHY_EXYNOS5250_USB2=y
CONFIG_PHY_EXYNOS5_USBDRD=y
# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set

#
# File systems
#
CONFIG_DCACHE_WORD_ACCESS=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT3_FS is not set
CONFIG_EXT4_FS=y
CONFIG_EXT4_USE_FOR_EXT23=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
CONFIG_FS_POSIX_ACL=y
CONFIG_FILE_LOCKING=y
CONFIG_FSNOTIFY=y
# CONFIG_DNOTIFY is not set
CONFIG_INOTIFY_USER=y
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_QUOTACTL is not set
# CONFIG_AUTOFS4_FS is not set
CONFIG_FUSE_FS=m
# CONFIG_CUSE is not set

#
# Caches
#
# CONFIG_FSCACHE is not set

#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=m
CONFIG_UDF_NLS=y

#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=m
# CONFIG_MSDOS_FS is not set
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_KERNFS=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_XATTR=y
# CONFIG_HUGETLB_PAGE is not set
# CONFIG_CONFIGFS_FS is not set
CONFIG_MISC_FILESYSTEMS=y
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
CONFIG_ECRYPT_FS=y
# CONFIG_ECRYPT_FS_MESSAGING is not set
# CONFIG_HFS_FS is not set
CONFIG_HFSPLUS_FS=m
# CONFIG_HFSPLUS_FS_POSIX_ACL is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_LOGFS is not set
# CONFIG_CRAMFS is not set
CONFIG_SQUASHFS=y
CONFIG_SQUASHFS_FILE_CACHE=y
# CONFIG_SQUASHFS_FILE_DIRECT is not set
CONFIG_SQUASHFS_DECOMP_SINGLE=y
# CONFIG_SQUASHFS_DECOMP_MULTI is not set
# CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU is not set
# CONFIG_SQUASHFS_XATTR is not set
CONFIG_SQUASHFS_ZLIB=y
CONFIG_SQUASHFS_LZO=y
# CONFIG_SQUASHFS_XZ is not set
# CONFIG_SQUASHFS_4K_DEVBLK_SIZE is not set
# CONFIG_SQUASHFS_EMBEDDED is not set
CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3
# CONFIG_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX6FS_FS is not set
# CONFIG_ROMFS_FS is not set
CONFIG_PSTORE=y
CONFIG_PSTORE_CONSOLE=y
# CONFIG_PSTORE_FTRACE is not set
CONFIG_PSTORE_RAM=y
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
# CONFIG_F2FS_FS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NLS_CODEPAGE_437=m
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=m
CONFIG_NLS_ISO8859_1=m
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_MAC_ROMAN is not set
# CONFIG_NLS_MAC_CELTIC is not set
# CONFIG_NLS_MAC_CENTEURO is not set
# CONFIG_NLS_MAC_CROATIAN is not set
# CONFIG_NLS_MAC_CYRILLIC is not set
# CONFIG_NLS_MAC_GAELIC is not set
# CONFIG_NLS_MAC_GREEK is not set
# CONFIG_NLS_MAC_ICELAND is not set
# CONFIG_NLS_MAC_INUIT is not set
# CONFIG_NLS_MAC_ROMANIAN is not set
# CONFIG_NLS_MAC_TURKISH is not set
CONFIG_NLS_UTF8=m

#
# Kernel hacking
#

#
# printk and dmesg options
#
CONFIG_PRINTK_TIME=y
CONFIG_DEFAULT_MESSAGE_LOGLEVEL=5
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_DYNAMIC_DEBUG is not set

#
# Compile-time checks and compiler options
#
CONFIG_DEBUG_INFO=y
# CONFIG_DEBUG_INFO_REDUCED is not set
CONFIG_ENABLE_WARN_DEPRECATED=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=1024
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_READABLE_ASM is not set
# CONFIG_UNUSED_SYMBOLS is not set
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_SECTION_MISMATCH is not set
CONFIG_FRAME_POINTER=y
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
CONFIG_MAGIC_SYSRQ=y
CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x1
CONFIG_DEBUG_KERNEL=y

#
# Memory Debugging
#
# CONFIG_DEBUG_PAGEALLOC is not set
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_SLUB_STATS is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_MEMORY_INIT is not set
# CONFIG_DEBUG_PER_CPU_MAPS is not set
# CONFIG_DEBUG_HIGHMEM is not set
# CONFIG_DEBUG_SHIRQ is not set

#
# Debug Lockups and Hangs
#
CONFIG_LOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=1
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y
CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=1
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_ON_OOPS_VALUE=0
CONFIG_PANIC_TIMEOUT=0
# CONFIG_SCHED_DEBUG is not set
CONFIG_SCHEDSTATS=y
CONFIG_TIMER_STATS=y

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
CONFIG_DEBUG_SPINLOCK=y
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
# CONFIG_LOCK_TORTURE_TEST is not set
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_PI_LIST is not set
# CONFIG_DEBUG_SG is not set
CONFIG_DEBUG_NOTIFIERS=y
CONFIG_DEBUG_CREDENTIALS=y

#
# RCU Debugging
#
# CONFIG_SPARSE_RCU_POINTER is not set
# CONFIG_TORTURE_TEST is not set
# CONFIG_RCU_TORTURE_TEST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=60
# CONFIG_RCU_CPU_STALL_INFO is not set
# CONFIG_RCU_TRACE is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_NOTIFIER_ERROR_INJECTION is not set
# CONFIG_FAULT_INJECTION is not set
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACE_CLOCK=y
CONFIG_RING_BUFFER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
CONFIG_FUNCTION_TRACER=y
CONFIG_FUNCTION_GRAPH_TRACER=y
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_FTRACE_SYSCALLS is not set
# CONFIG_TRACER_SNAPSHOT is not set
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
# CONFIG_STACK_TRACER is not set
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_UPROBE_EVENT is not set
# CONFIG_PROBE_EVENTS is not set
CONFIG_DYNAMIC_FTRACE=y
# CONFIG_FUNCTION_PROFILER is not set
CONFIG_FTRACE_MCOUNT_RECORD=y
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_TRACEPOINT_BENCHMARK is not set
# CONFIG_RING_BUFFER_BENCHMARK is not set
# CONFIG_RING_BUFFER_STARTUP_TEST is not set

#
# Runtime Testing
#
CONFIG_LKDTM=y
# CONFIG_TEST_LIST_SORT is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_RBTREE_TEST is not set
# CONFIG_INTERVAL_TREE_TEST is not set
# CONFIG_PERCPU_TEST is not set
# CONFIG_ATOMIC64_SELFTEST is not set
# CONFIG_TEST_STRING_HELPERS is not set
# CONFIG_TEST_KSTRTOX is not set
# CONFIG_DMA_API_DEBUG is not set
CONFIG_TEST_MODULE=m
# CONFIG_TEST_USER_COPY is not set
# CONFIG_TEST_BPF is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
# CONFIG_ARM_PTDUMP is not set
CONFIG_STRICT_DEVMEM=y
CONFIG_ARM_UNWIND=y
CONFIG_OLD_MCOUNT=y
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_LL=y
# CONFIG_DEBUG_S3C_UART0 is not set
# CONFIG_DEBUG_S3C_UART1 is not set
# CONFIG_DEBUG_S3C_UART2 is not set
CONFIG_DEBUG_S3C_UART3=y
# CONFIG_DEBUG_ICEDCC is not set
# CONFIG_DEBUG_SEMIHOSTING is not set
# CONFIG_DEBUG_LL_UART_8250 is not set
# CONFIG_DEBUG_LL_UART_PL01X is not set
CONFIG_DEBUG_EXYNOS_UART=y
CONFIG_DEBUG_LL_INCLUDE="debug/exynos.S"
# CONFIG_DEBUG_UART_PL01X is not set
# CONFIG_DEBUG_UART_8250 is not set
CONFIG_DEBUG_UNCOMPRESS=y
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
CONFIG_EARLY_PRINTK=y
# CONFIG_OC_ETM is not set
# CONFIG_PID_IN_CONTEXTIDR is not set
CONFIG_DEBUG_SET_MODULE_RONX=y

#
# Security options
#
CONFIG_KEYS=y
# CONFIG_PERSISTENT_KEYRINGS is not set
# CONFIG_BIG_KEYS is not set
# CONFIG_TRUSTED_KEYS is not set
# CONFIG_ENCRYPTED_KEYS is not set
CONFIG_KEYS_DEBUG_PROC_KEYS=y
# CONFIG_SECURITY_DMESG_RESTRICT is not set
CONFIG_SECURITY=y
CONFIG_SECURITYFS=y
CONFIG_SECURITY_NETWORK=y
# CONFIG_SECURITY_NETWORK_XFRM is not set
CONFIG_SECURITY_PATH=y
# CONFIG_SECURITY_SMACK is not set
# CONFIG_SECURITY_TOMOYO is not set
# CONFIG_SECURITY_APPARMOR is not set
CONFIG_SECURITY_YAMA=y
CONFIG_SECURITY_YAMA_STACKED=y
# CONFIG_IMA is not set
# CONFIG_EVM is not set
# CONFIG_DEFAULT_SECURITY_YAMA is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_DEFAULT_SECURITY=""
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=m
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_PCOMP2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_USER is not set
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
# CONFIG_CRYPTO_GF128MUL is not set
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_PCRYPT is not set
CONFIG_CRYPTO_WORKQUEUE=y
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_AUTHENC=y
# CONFIG_CRYPTO_TEST is not set

#
# Authenticated Encryption with Associated Data
#
CONFIG_CRYPTO_CCM=m
# CONFIG_CRYPTO_GCM is not set
CONFIG_CRYPTO_SEQIV=m

#
# Block modes
#
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CTR=m
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=y
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_XTS is not set

#
# Hash modes
#
# CONFIG_CRYPTO_CMAC is not set
CONFIG_CRYPTO_HMAC=y
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set

#
# Digest
#
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_CRC32 is not set
CONFIG_CRYPTO_CRCT10DIF=m
# CONFIG_CRYPTO_GHASH is not set
# CONFIG_CRYPTO_MD4 is not set
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_RMD256 is not set
# CONFIG_CRYPTO_RMD320 is not set
CONFIG_CRYPTO_SHA1=y
# CONFIG_CRYPTO_SHA1_ARM is not set
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=m
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_WP512 is not set

#
# Ciphers
#
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_AES_ARM is not set
# CONFIG_CRYPTO_ANUBIS is not set
CONFIG_CRYPTO_ARC4=y
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
CONFIG_CRYPTO_DES=y
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set

#
# Compression
#
CONFIG_CRYPTO_DEFLATE=m
# CONFIG_CRYPTO_ZLIB is not set
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_LZ4 is not set
# CONFIG_CRYPTO_LZ4HC is not set

#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_USER_API_HASH is not set
# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
CONFIG_CRYPTO_HW=y
# CONFIG_CRYPTO_DEV_S5P is not set
# CONFIG_ASYMMETRIC_KEY_TYPE is not set
CONFIG_BINARY_PRINTF=y

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GENERIC_NET_UTILS=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IO=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=y
CONFIG_CRC_T10DIF=m
CONFIG_CRC_ITU_T=m
CONFIG_CRC32=y
# CONFIG_CRC32_SELFTEST is not set
CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC32_SLICEBY4 is not set
# CONFIG_CRC32_SARWATE is not set
# CONFIG_CRC32_BIT is not set
CONFIG_CRC7=m
CONFIG_LIBCRC32C=m
# CONFIG_CRC8 is not set
# CONFIG_AUDIT_ARCH_COMPAT_GENERIC is not set
# CONFIG_RANDOM32_SELFTEST is not set
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_XZ_DEC=y
CONFIG_XZ_DEC_X86=y
# CONFIG_XZ_DEC_POWERPC is not set
# CONFIG_XZ_DEC_IA64 is not set
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_ARMTHUMB=y
# CONFIG_XZ_DEC_SPARC is not set
CONFIG_XZ_DEC_BCJ=y
# CONFIG_XZ_DEC_TEST is not set
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_XZ=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_REED_SOLOMON=y
CONFIG_REED_SOLOMON_ENC8=y
CONFIG_REED_SOLOMON_DEC8=y
CONFIG_ASSOCIATIVE_ARRAY=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_DMA=y
CONFIG_CPU_RMAP=y
CONFIG_DQL=y
CONFIG_NLATTR=y
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
CONFIG_AVERAGE=y
# CONFIG_CORDIC is not set
# CONFIG_DDR is not set
CONFIG_LIBFDT=y
CONFIG_FONT_SUPPORT=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_VIRTUALIZATION is not set

[-- Attachment #4: Type: text/plain, Size: 159 bytes --]

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Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Andreas Färber]

Hi Ajay,

Am 03.07.2014 16:55, schrieb Ajay kumar:
> On Thu, Jul 3, 2014 at 10:49 AM, Andreas Färber <afaerber@suse.de> wrote:
>> Am 11.06.2014 20:26, schrieb Ajay Kumar:
>>> This series is based on exynos-drm-next branch of Inki Dae's tree at:
>>> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
>>>
>>> I have tested this after adding few DT changes for exynos5250-snow,
>>> exynos5420-peach-pit and exynos5800-peach-pi boards.
>>
>> Unfortunately this series per se does not yet fix my display issues on
>> the Spring Chromebook. Can you share what dt changes you made for Snow?
>>
>> Before, if the dp-controller dt node was present, I would get a dark
>> screen immediately and I could ssh into the system shortly after.
>> I worked around that by commenting the node out, which would allow me to
>> graphically boot pretty much instantly.
>>
>> With these 10 patches applied on top of my dt on top of kgene's tree,
>> the last U-Boot screen stays visible for ~50 seconds, then the screen
>> goes blank, and I can ssh in some time later.
>> If I comment out the dp-controller node again, it takes long for the
>> kernel boot to graphically proceed but works okay then.
>> In both cases there's a gap of ~2900 seconds visible in dmesg.
[...]
>> https://github.com/afaerber/linux/commits/spring-next
>> https://github.com/afaerber/u-boot/commits/spring
> You need to add bridge chip node and panel node to use my patch series.
> Also, to support that you need to enable tps65090 regulator on spring.
> 
> I have attached a patch which adds the bridge chip node and panel node.

Wow, that's more help than I expected! Many thanks.

I'll strip down dp-controller accordingly for my v2.

Your dt changes level again with my commenting out dp-controller. So I
take it, the minute-long delay is regulator-induced somehow.

> Also, I have attached a sample config which I used to compile the kernel.

I simply answered y to all your new options. :)

> Doug can help you in adding changes required for tps65090.

Hm, Doug had pointed out an issue with tps65090 in my v1, so I dropped
it: https://patchwork.kernel.org/patch/4397321/

Regards,
Andreas

-- 
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Doug Anderson]

Andreas,

On Fri, Jul 4, 2014 at 6:06 AM, Andreas Färber <afaerber@suse.de> wrote:
>> Doug can help you in adding changes required for tps65090.
>
> Hm, Doug had pointed out an issue with tps65090 in my v1, so I dropped
> it: https://patchwork.kernel.org/patch/4397321/

tps65090 on Spring is nowhere near obvious due to the EC commands that
were available during the Spring timeframe.  See
http://crbug.com/391797 for some details.

-Doug

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Doug Anderson]

Hi,

On Wed, Jul 2, 2014 at 10:19 PM, Andreas Färber <afaerber@suse.de> wrote:
> With these 10 patches applied on top of my dt on top of kgene's tree,
> the last U-Boot screen stays visible for ~50 seconds, then the screen
> goes blank, and I can ssh in some time later.
> If I comment out the dp-controller node again, it takes long for the
> kernel boot to graphically proceed but works okay then.
> In both cases there's a gap of ~2900 seconds visible in dmesg.

I would have imagined that this was fixed by (1d80415 clocksource:
exynos_mct: Don't reset the counter during boot and resume).

...that should also fix a long delay at bootup (delay was based on how
much time you spent in U-Boot).

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Ajay kumar]

Hi Daniel, Thierry and Rob,

Currently, the following boards are working fine with the bridge chip series:
- snow
- spring
- peach_pit
- peach_pi
And, I did change my original patchset based on your comments here:
(1) [RFC V2 0/3] drm/bridge: panel and chaining
        http://www.spinics.net/lists/linux-samsung-soc/msg30160.html
(2) [RFC V3 0/3] drm/bridge: panel and chaining
        http://www.spinics.net/lists/linux-samsung-soc/msg30507.html

If you think this is not the right way of doing it, please come forward with
more suggestions, or kindly ACK it.
I am just wondering how long can I keep waiting for comments?

Regards,
Ajay

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Olof Johansson]

Inki,

You have acks, and you have the tested-bys you requested. Can you
please pick this up quickly so that we can have graphics working with
an upstream kernel on chromebooks?

Dave, if Inki keeps dragging his feet like this can you please apply
this series directly? These delays are ridiculous and it's hurting
forward progress on the platform as a whole.


Thanks,

-Olof


On Tue, Jul 8, 2014 at 11:11 PM, Ajay kumar <ajaynumb@gmail.com> wrote:
> Hi Daniel, Thierry and Rob,
>
> Currently, the following boards are working fine with the bridge chip series:
> - snow
> - spring
> - peach_pit
> - peach_pi
> And, I did change my original patchset based on your comments here:
> (1) [RFC V2 0/3] drm/bridge: panel and chaining
>         http://www.spinics.net/lists/linux-samsung-soc/msg30160.html
> (2) [RFC V3 0/3] drm/bridge: panel and chaining
>         http://www.spinics.net/lists/linux-samsung-soc/msg30507.html
>
> If you think this is not the right way of doing it, please come forward with
> more suggestions, or kindly ACK it.
> I am just wondering how long can I keep waiting for comments?
>
> Regards,
> Ajay
> --
> To unsubscribe from this list: send the line "unsubscribe devicetree" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support

[Inki Dae]

On 2014년 07월 15일 02:22, Olof Johansson wrote:
> Inki,
> 
> You have acks, and you have the tested-bys you requested. Can you
> please pick this up quickly so that we can have graphics working with
> an upstream kernel on chromebooks?
> 
> Dave, if Inki keeps dragging his feet like this can you please apply
> this series directly? These delays are ridiculous and it's hurting
> forward progress on the platform as a whole.
> 

Hi,

I am not really dragging. We need to wait for ACKs of other maintainers:
please know that this patch series includes non-Exynos part.

For this, Ajay requested already it to Daniel, Thierry, and Rob a week
ago. If there are no any ACKs from them until this week, I plan to pick
them up.

So please wait.

Thanks,
Inki Dae

> 
> Thanks,
> 
> -Olof
> 
> 
> On Tue, Jul 8, 2014 at 11:11 PM, Ajay kumar <ajaynumb@gmail.com> wrote:
>> Hi Daniel, Thierry and Rob,
>>
>> Currently, the following boards are working fine with the bridge chip series:
>> - snow
>> - spring
>> - peach_pit
>> - peach_pi
>> And, I did change my original patchset based on your comments here:
>> (1) [RFC V2 0/3] drm/bridge: panel and chaining
>>         http://www.spinics.net/lists/linux-samsung-soc/msg30160.html
>> (2) [RFC V3 0/3] drm/bridge: panel and chaining
>>         http://www.spinics.net/lists/linux-samsung-soc/msg30507.html
>>
>> If you think this is not the right way of doing it, please come forward with
>> more suggestions, or kindly ACK it.
>> I am just wondering how long can I keep waiting for comments?
>>
>> Regards,
>> Ajay
>> --
>> To unsubscribe from this list: send the line "unsubscribe devicetree" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

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