* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-15 9:54 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:54 UTC (permalink / raw)
To: linux-arm-kernel
This series is based on master branch of Linus tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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
Changes since V4:
-- Use gpiod interface for panel-lvds and ps8622 drivers.
-- Address comments from Javier.
-- Fix compilation issues when PANEL_BINDER is selected as module.
-- Split Documentation patches from driver patches.
-- Rebase on top of the tree.
Changes since V5:
-- Modify bridge drivers to support driver model.
-- Drop the concept of bridge chain(sincle there are no 2 real bridges)
Hence drop bridge-panel_binder layer.
-- Drop panel-lvds driver and accomodate the required changes in
panel-simple driver.
-- Use gpiod interface in ptn3460 driver.
-- Address all comments by Thierry Reding for V5 series.
-- Address comments from Sean Paul for exynos_dp_commit issue.
Changes since V6:
-- Panel patches were seperated and they are merged already.
-- Fix few issues with ptn3460, before modifying the bridge core.
-- Modify drm_bridge as per Thierry's comments for V6 series.
-- Add drm_bridge changes minimally without breaking existing code.
-- Add new features for ptn3460, step-by-step.
-- Address comments from Thierry and Andreas for ptn3460 and ps8622.
-- Split documentation patches from driver patches.
Changes since V7:
-- Address comments from Tomi and Laurent:
-- Use videoports and endpoints to represent the connection between
encoder, bridge and the panel, instead of using phandles.
-- Address comments from Daniel:
-- Make the patch description more descriptive.
-- remove device pointer from drm_bridge, and just use
device_node instead.
-- don't pass encoder pointer to bridge_attach.
-- Address comments from Sean Paul:
-- Remove bridge from mode_config, and pull out drm_bridge
functions from drm_crtc.c to drm_bridge.c
Note: This patchset creates the following Kconfig ambiguity.
Any pointers to fix the same are welcome.
drivers/video/fbdev/Kconfig:5:error: recursive dependency detected!
drivers/video/fbdev/Kconfig:5: symbol FB is selected by DRM_KMS_FB_HELPER
drivers/gpu/drm/Kconfig:34: symbol DRM_KMS_FB_HELPER depends on DRM_KMS_HELPER
drivers/gpu/drm/Kconfig:28: symbol DRM_KMS_HELPER is selected by DRM_PTN3460
drivers/gpu/drm/bridge/Kconfig:1: symbol DRM_PTN3460 depends on I2C
drivers/i2c/Kconfig:7: symbol I2C is selected by FB_DDC
drivers/video/fbdev/Kconfig:59: symbol FB_DDC is selected by FB_CYBER2000_DDC
drivers/video/fbdev/Kconfig:374: symbol FB_CYBER2000_DDC depends on FB_CYBER2000
drivers/video/fbdev/Kconfig:362: symbol FB_CYBER2000 depends on FB
Ajay Kumar (13):
[PATCH V8 1/14] drm/bridge: ptn3460: Few trivial cleanups
[PATCH V8 2/14] drm/bridge: do not pass drm_bridge_funcs to drm_bridge_init
[PATCH V8 3/14] drm/bridge: make bridge registration independent of drm flow
[PATCH V8 4/14] drm/bridge: ptn3460: Convert to i2c driver model
[PATCH V8 5/14] drm/exynos: dp: support drm_bridge
[PATCH V8 6/14] drm/bridge: ptn3460: support drm_panel
[PATCH V8 7/14] drm/bridge: ptn3460: probe connector at the end of bridge attach
[PATCH V8 8/14] drm/bridge: ptn3460: use gpiod interface
[PATCH V8 9/14] Documentation: drm: bridge: move to video/bridge
[PATCH V8 10/14] Documentation: devicetree: Add vendor prefix for parade
[PATCH V8 11/14] Documentation: bridge: Add documentation for ps8622 DT properties
[PATCH V8 13/14] ARM: dts: snow: represent the connection between bridge and panel
using videoport and endpoints
[PATCH V8 14/14] ARM: dts: peach-pit: represent the connection between bridge and
panel using videoport and endpoints
Vincent Palatin (1):
[PATCH V8 12/14] drm/bridge: Add i2c based driver for ps8622/ps8625 bridge
.../devicetree/bindings/drm/bridge/ptn3460.txt | 27 -
.../devicetree/bindings/vendor-prefixes.txt | 1 +
.../devicetree/bindings/video/bridge/ps8622.txt | 31 +
.../devicetree/bindings/video/bridge/ptn3460.txt | 39 ++
.../devicetree/bindings/video/exynos_dp.txt | 12 +
arch/arm/boot/dts/exynos5250-snow.dts | 30 +-
arch/arm/boot/dts/exynos5420-peach-pit.dts | 31 +-
drivers/gpu/drm/Makefile | 2 +-
drivers/gpu/drm/bridge/Kconfig | 12 +
drivers/gpu/drm/bridge/Makefile | 1 +
drivers/gpu/drm/bridge/ps8622.c | 684 ++++++++++++++++++++
drivers/gpu/drm/bridge/ptn3460.c | 310 +++++----
drivers/gpu/drm/drm_bridge.c | 91 +++
drivers/gpu/drm/drm_crtc.c | 68 --
drivers/gpu/drm/exynos/exynos_dp_core.c | 53 +-
drivers/gpu/drm/exynos/exynos_dp_core.h | 1 +
drivers/gpu/drm/msm/hdmi/hdmi.c | 7 +-
drivers/gpu/drm/msm/hdmi/hdmi.h | 1 +
drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 8 +-
drivers/gpu/drm/sti/sti_hda.c | 11 +-
drivers/gpu/drm/sti/sti_hdmi.c | 11 +-
include/drm/bridge/ptn3460.h | 8 +
include/drm/drm_crtc.h | 27 +-
23 files changed, 1184 insertions(+), 282 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
create mode 100644 Documentation/devicetree/bindings/video/bridge/ps8622.txt
create mode 100644 Documentation/devicetree/bindings/video/bridge/ptn3460.txt
create mode 100644 drivers/gpu/drm/bridge/ps8622.c
create mode 100644 drivers/gpu/drm/drm_bridge.c
--
1.7.9.5
^ permalink raw reply [flat|nested] 86+ messages in thread* [PATCH V8 01/14] drm/bridge: ptn3460: Few trivial cleanups
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:54 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:54 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
This patch does the following changes:
-- Use usleep_range instead of udelay.
-- Remove driver_private member from ptn3460 structure.
-- Make all possible functions and structures static.
-- Use dev_err for non-DRM errors.
-- Arrange header files alphabetically.
-- s/edid/EDID in all error messages.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/ptn3460.c | 95 +++++++++++++++++++-------------------
1 file changed, 48 insertions(+), 47 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index d466696..4db38e1 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -13,19 +13,19 @@
* GNU General Public License for more details.
*/
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
-#include <linux/i2c.h>
-#include <linux/gpio.h>
-#include <linux/delay.h>
-#include "drmP.h"
-#include "drm_edid.h"
+#include "bridge/ptn3460.h"
+
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
-
-#include "bridge/ptn3460.h"
+#include "drm_edid.h"
+#include "drmP.h"
#define PTN3460_EDID_ADDR 0x0
#define PTN3460_EDID_EMULATION_ADDR 0x84
@@ -37,7 +37,7 @@ struct ptn3460_bridge {
struct drm_connector connector;
struct i2c_client *client;
struct drm_encoder *encoder;
- struct drm_bridge *bridge;
+ struct drm_bridge bridge;
struct edid *edid;
int gpio_pd_n;
int gpio_rst_n;
@@ -45,6 +45,18 @@ struct ptn3460_bridge {
bool enabled;
};
+static inline struct ptn3460_bridge *
+ bridge_to_ptn3460(struct drm_bridge *bridge)
+{
+ return container_of(bridge, struct ptn3460_bridge, bridge);
+}
+
+static inline struct ptn3460_bridge *
+ connector_to_ptn3460(struct drm_connector *connector)
+{
+ return container_of(connector, struct ptn3460_bridge, connector);
+}
+
static int ptn3460_read_bytes(struct ptn3460_bridge *ptn_bridge, char addr,
u8 *buf, int len)
{
@@ -92,7 +104,7 @@ static int ptn3460_select_edid(struct ptn3460_bridge *ptn_bridge)
ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_SRAM_LOAD_ADDR,
ptn_bridge->edid_emulation);
if (ret) {
- DRM_ERROR("Failed to transfer edid to sram, ret=%d\n", ret);
+ DRM_ERROR("Failed to transfer EDID to sram, ret=%d\n", ret);
return ret;
}
@@ -102,7 +114,7 @@ static int ptn3460_select_edid(struct ptn3460_bridge *ptn_bridge)
ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_EMULATION_ADDR, val);
if (ret) {
- DRM_ERROR("Failed to write edid value, ret=%d\n", ret);
+ DRM_ERROR("Failed to write EDID value, ret=%d\n", ret);
return ret;
}
@@ -111,7 +123,7 @@ static int ptn3460_select_edid(struct ptn3460_bridge *ptn_bridge)
static void ptn3460_pre_enable(struct drm_bridge *bridge)
{
- struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
int ret;
if (ptn_bridge->enabled)
@@ -122,7 +134,7 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
if (gpio_is_valid(ptn_bridge->gpio_rst_n)) {
gpio_set_value(ptn_bridge->gpio_rst_n, 0);
- udelay(10);
+ usleep_range(10, 20);
gpio_set_value(ptn_bridge->gpio_rst_n, 1);
}
@@ -135,7 +147,7 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
ret = ptn3460_select_edid(ptn_bridge);
if (ret)
- DRM_ERROR("Select edid failed ret=%d\n", ret);
+ DRM_ERROR("Select EDID failed ret=%d\n", ret);
ptn_bridge->enabled = true;
}
@@ -146,7 +158,7 @@ static void ptn3460_enable(struct drm_bridge *bridge)
static void ptn3460_disable(struct drm_bridge *bridge)
{
- struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
if (!ptn_bridge->enabled)
return;
@@ -164,9 +176,9 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
{
}
-void ptn3460_bridge_destroy(struct drm_bridge *bridge)
+static void ptn3460_bridge_destroy(struct drm_bridge *bridge)
{
- struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
drm_bridge_cleanup(bridge);
if (gpio_is_valid(ptn_bridge->gpio_pd_n))
@@ -176,7 +188,7 @@ void ptn3460_bridge_destroy(struct drm_bridge *bridge)
/* Nothing else to free, we've got devm allocated memory */
}
-struct drm_bridge_funcs ptn3460_bridge_funcs = {
+static struct drm_bridge_funcs ptn3460_bridge_funcs = {
.pre_enable = ptn3460_pre_enable,
.enable = ptn3460_enable,
.disable = ptn3460_disable,
@@ -184,24 +196,24 @@ struct drm_bridge_funcs ptn3460_bridge_funcs = {
.destroy = ptn3460_bridge_destroy,
};
-int ptn3460_get_modes(struct drm_connector *connector)
+static int ptn3460_get_modes(struct drm_connector *connector)
{
struct ptn3460_bridge *ptn_bridge;
u8 *edid;
- int ret, num_modes;
+ int ret, num_modes = 0;
bool power_off;
- ptn_bridge = container_of(connector, struct ptn3460_bridge, connector);
+ ptn_bridge = connector_to_ptn3460(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);
+ ptn3460_pre_enable(&ptn_bridge->bridge);
edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
if (!edid) {
- DRM_ERROR("Failed to allocate edid\n");
+ DRM_ERROR("Failed to allocate EDID\n");
return 0;
}
@@ -209,7 +221,6 @@ int ptn3460_get_modes(struct drm_connector *connector)
EDID_LENGTH);
if (ret) {
kfree(edid);
- num_modes = 0;
goto out;
}
@@ -220,37 +231,35 @@ int ptn3460_get_modes(struct drm_connector *connector)
out:
if (power_off)
- ptn3460_disable(ptn_bridge->bridge);
+ ptn3460_disable(&ptn_bridge->bridge);
return num_modes;
}
-struct drm_encoder *ptn3460_best_encoder(struct drm_connector *connector)
+static struct drm_encoder *ptn3460_best_encoder(struct drm_connector *connector)
{
- struct ptn3460_bridge *ptn_bridge;
-
- ptn_bridge = container_of(connector, struct ptn3460_bridge, connector);
+ struct ptn3460_bridge *ptn_bridge = connector_to_ptn3460(connector);
return ptn_bridge->encoder;
}
-struct drm_connector_helper_funcs ptn3460_connector_helper_funcs = {
+static 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,
+static enum drm_connector_status ptn3460_detect(struct drm_connector *connector,
bool force)
{
return connector_status_connected;
}
-void ptn3460_connector_destroy(struct drm_connector *connector)
+static void ptn3460_connector_destroy(struct drm_connector *connector)
{
drm_connector_cleanup(connector);
}
-struct drm_connector_funcs ptn3460_connector_funcs = {
+static struct drm_connector_funcs ptn3460_connector_funcs = {
.dpms = drm_helper_connector_dpms,
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = ptn3460_detect,
@@ -261,30 +270,22 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
struct i2c_client *client, struct device_node *node)
{
int ret;
- struct drm_bridge *bridge;
struct ptn3460_bridge *ptn_bridge;
- bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
- if (!bridge) {
- DRM_ERROR("Failed to allocate drm bridge\n");
- return -ENOMEM;
- }
-
ptn_bridge = devm_kzalloc(dev->dev, sizeof(*ptn_bridge), GFP_KERNEL);
if (!ptn_bridge) {
- DRM_ERROR("Failed to allocate ptn bridge\n");
return -ENOMEM;
}
ptn_bridge->client = client;
ptn_bridge->encoder = encoder;
- ptn_bridge->bridge = bridge;
ptn_bridge->gpio_pd_n = of_get_named_gpio(node, "powerdown-gpio", 0);
if (gpio_is_valid(ptn_bridge->gpio_pd_n)) {
ret = gpio_request_one(ptn_bridge->gpio_pd_n,
GPIOF_OUT_INIT_HIGH, "PTN3460_PD_N");
if (ret) {
- DRM_ERROR("Request powerdown-gpio failed (%d)\n", ret);
+ dev_err(&client->dev,
+ "Request powerdown-gpio failed (%d)\n", ret);
return ret;
}
}
@@ -298,7 +299,8 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
ret = gpio_request_one(ptn_bridge->gpio_rst_n,
GPIOF_OUT_INIT_LOW, "PTN3460_RST_N");
if (ret) {
- DRM_ERROR("Request reset-gpio failed (%d)\n", ret);
+ dev_err(&client->dev,
+ "Request reset-gpio failed (%d)\n", ret);
gpio_free(ptn_bridge->gpio_pd_n);
return ret;
}
@@ -307,18 +309,17 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
ret = of_property_read_u32(node, "edid-emulation",
&ptn_bridge->edid_emulation);
if (ret) {
- DRM_ERROR("Can't read edid emulation value\n");
+ dev_err(&client->dev, "Can't read EDID emulation value\n");
goto err;
}
- ret = drm_bridge_init(dev, bridge, &ptn3460_bridge_funcs);
+ ret = drm_bridge_init(dev, &ptn_bridge->bridge, &ptn3460_bridge_funcs);
if (ret) {
DRM_ERROR("Failed to initialize bridge with drm\n");
goto err;
}
- bridge->driver_private = ptn_bridge;
- encoder->bridge = bridge;
+ encoder->bridge = &ptn_bridge->bridge;
ret = drm_connector_init(dev, &ptn_bridge->connector,
&ptn3460_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 01/14] drm/bridge: ptn3460: Few trivial cleanups
@ 2014-11-15 9:54 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:54 UTC (permalink / raw)
To: linux-arm-kernel
This patch does the following changes:
-- Use usleep_range instead of udelay.
-- Remove driver_private member from ptn3460 structure.
-- Make all possible functions and structures static.
-- Use dev_err for non-DRM errors.
-- Arrange header files alphabetically.
-- s/edid/EDID in all error messages.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/ptn3460.c | 95 +++++++++++++++++++-------------------
1 file changed, 48 insertions(+), 47 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index d466696..4db38e1 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -13,19 +13,19 @@
* GNU General Public License for more details.
*/
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
-#include <linux/i2c.h>
-#include <linux/gpio.h>
-#include <linux/delay.h>
-#include "drmP.h"
-#include "drm_edid.h"
+#include "bridge/ptn3460.h"
+
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
-
-#include "bridge/ptn3460.h"
+#include "drm_edid.h"
+#include "drmP.h"
#define PTN3460_EDID_ADDR 0x0
#define PTN3460_EDID_EMULATION_ADDR 0x84
@@ -37,7 +37,7 @@ struct ptn3460_bridge {
struct drm_connector connector;
struct i2c_client *client;
struct drm_encoder *encoder;
- struct drm_bridge *bridge;
+ struct drm_bridge bridge;
struct edid *edid;
int gpio_pd_n;
int gpio_rst_n;
@@ -45,6 +45,18 @@ struct ptn3460_bridge {
bool enabled;
};
+static inline struct ptn3460_bridge *
+ bridge_to_ptn3460(struct drm_bridge *bridge)
+{
+ return container_of(bridge, struct ptn3460_bridge, bridge);
+}
+
+static inline struct ptn3460_bridge *
+ connector_to_ptn3460(struct drm_connector *connector)
+{
+ return container_of(connector, struct ptn3460_bridge, connector);
+}
+
static int ptn3460_read_bytes(struct ptn3460_bridge *ptn_bridge, char addr,
u8 *buf, int len)
{
@@ -92,7 +104,7 @@ static int ptn3460_select_edid(struct ptn3460_bridge *ptn_bridge)
ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_SRAM_LOAD_ADDR,
ptn_bridge->edid_emulation);
if (ret) {
- DRM_ERROR("Failed to transfer edid to sram, ret=%d\n", ret);
+ DRM_ERROR("Failed to transfer EDID to sram, ret=%d\n", ret);
return ret;
}
@@ -102,7 +114,7 @@ static int ptn3460_select_edid(struct ptn3460_bridge *ptn_bridge)
ret = ptn3460_write_byte(ptn_bridge, PTN3460_EDID_EMULATION_ADDR, val);
if (ret) {
- DRM_ERROR("Failed to write edid value, ret=%d\n", ret);
+ DRM_ERROR("Failed to write EDID value, ret=%d\n", ret);
return ret;
}
@@ -111,7 +123,7 @@ static int ptn3460_select_edid(struct ptn3460_bridge *ptn_bridge)
static void ptn3460_pre_enable(struct drm_bridge *bridge)
{
- struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
int ret;
if (ptn_bridge->enabled)
@@ -122,7 +134,7 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
if (gpio_is_valid(ptn_bridge->gpio_rst_n)) {
gpio_set_value(ptn_bridge->gpio_rst_n, 0);
- udelay(10);
+ usleep_range(10, 20);
gpio_set_value(ptn_bridge->gpio_rst_n, 1);
}
@@ -135,7 +147,7 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
ret = ptn3460_select_edid(ptn_bridge);
if (ret)
- DRM_ERROR("Select edid failed ret=%d\n", ret);
+ DRM_ERROR("Select EDID failed ret=%d\n", ret);
ptn_bridge->enabled = true;
}
@@ -146,7 +158,7 @@ static void ptn3460_enable(struct drm_bridge *bridge)
static void ptn3460_disable(struct drm_bridge *bridge)
{
- struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
if (!ptn_bridge->enabled)
return;
@@ -164,9 +176,9 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
{
}
-void ptn3460_bridge_destroy(struct drm_bridge *bridge)
+static void ptn3460_bridge_destroy(struct drm_bridge *bridge)
{
- struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
drm_bridge_cleanup(bridge);
if (gpio_is_valid(ptn_bridge->gpio_pd_n))
@@ -176,7 +188,7 @@ void ptn3460_bridge_destroy(struct drm_bridge *bridge)
/* Nothing else to free, we've got devm allocated memory */
}
-struct drm_bridge_funcs ptn3460_bridge_funcs = {
+static struct drm_bridge_funcs ptn3460_bridge_funcs = {
.pre_enable = ptn3460_pre_enable,
.enable = ptn3460_enable,
.disable = ptn3460_disable,
@@ -184,24 +196,24 @@ struct drm_bridge_funcs ptn3460_bridge_funcs = {
.destroy = ptn3460_bridge_destroy,
};
-int ptn3460_get_modes(struct drm_connector *connector)
+static int ptn3460_get_modes(struct drm_connector *connector)
{
struct ptn3460_bridge *ptn_bridge;
u8 *edid;
- int ret, num_modes;
+ int ret, num_modes = 0;
bool power_off;
- ptn_bridge = container_of(connector, struct ptn3460_bridge, connector);
+ ptn_bridge = connector_to_ptn3460(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);
+ ptn3460_pre_enable(&ptn_bridge->bridge);
edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
if (!edid) {
- DRM_ERROR("Failed to allocate edid\n");
+ DRM_ERROR("Failed to allocate EDID\n");
return 0;
}
@@ -209,7 +221,6 @@ int ptn3460_get_modes(struct drm_connector *connector)
EDID_LENGTH);
if (ret) {
kfree(edid);
- num_modes = 0;
goto out;
}
@@ -220,37 +231,35 @@ int ptn3460_get_modes(struct drm_connector *connector)
out:
if (power_off)
- ptn3460_disable(ptn_bridge->bridge);
+ ptn3460_disable(&ptn_bridge->bridge);
return num_modes;
}
-struct drm_encoder *ptn3460_best_encoder(struct drm_connector *connector)
+static struct drm_encoder *ptn3460_best_encoder(struct drm_connector *connector)
{
- struct ptn3460_bridge *ptn_bridge;
-
- ptn_bridge = container_of(connector, struct ptn3460_bridge, connector);
+ struct ptn3460_bridge *ptn_bridge = connector_to_ptn3460(connector);
return ptn_bridge->encoder;
}
-struct drm_connector_helper_funcs ptn3460_connector_helper_funcs = {
+static 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,
+static enum drm_connector_status ptn3460_detect(struct drm_connector *connector,
bool force)
{
return connector_status_connected;
}
-void ptn3460_connector_destroy(struct drm_connector *connector)
+static void ptn3460_connector_destroy(struct drm_connector *connector)
{
drm_connector_cleanup(connector);
}
-struct drm_connector_funcs ptn3460_connector_funcs = {
+static struct drm_connector_funcs ptn3460_connector_funcs = {
.dpms = drm_helper_connector_dpms,
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = ptn3460_detect,
@@ -261,30 +270,22 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
struct i2c_client *client, struct device_node *node)
{
int ret;
- struct drm_bridge *bridge;
struct ptn3460_bridge *ptn_bridge;
- bridge = devm_kzalloc(dev->dev, sizeof(*bridge), GFP_KERNEL);
- if (!bridge) {
- DRM_ERROR("Failed to allocate drm bridge\n");
- return -ENOMEM;
- }
-
ptn_bridge = devm_kzalloc(dev->dev, sizeof(*ptn_bridge), GFP_KERNEL);
if (!ptn_bridge) {
- DRM_ERROR("Failed to allocate ptn bridge\n");
return -ENOMEM;
}
ptn_bridge->client = client;
ptn_bridge->encoder = encoder;
- ptn_bridge->bridge = bridge;
ptn_bridge->gpio_pd_n = of_get_named_gpio(node, "powerdown-gpio", 0);
if (gpio_is_valid(ptn_bridge->gpio_pd_n)) {
ret = gpio_request_one(ptn_bridge->gpio_pd_n,
GPIOF_OUT_INIT_HIGH, "PTN3460_PD_N");
if (ret) {
- DRM_ERROR("Request powerdown-gpio failed (%d)\n", ret);
+ dev_err(&client->dev,
+ "Request powerdown-gpio failed (%d)\n", ret);
return ret;
}
}
@@ -298,7 +299,8 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
ret = gpio_request_one(ptn_bridge->gpio_rst_n,
GPIOF_OUT_INIT_LOW, "PTN3460_RST_N");
if (ret) {
- DRM_ERROR("Request reset-gpio failed (%d)\n", ret);
+ dev_err(&client->dev,
+ "Request reset-gpio failed (%d)\n", ret);
gpio_free(ptn_bridge->gpio_pd_n);
return ret;
}
@@ -307,18 +309,17 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
ret = of_property_read_u32(node, "edid-emulation",
&ptn_bridge->edid_emulation);
if (ret) {
- DRM_ERROR("Can't read edid emulation value\n");
+ dev_err(&client->dev, "Can't read EDID emulation value\n");
goto err;
}
- ret = drm_bridge_init(dev, bridge, &ptn3460_bridge_funcs);
+ ret = drm_bridge_init(dev, &ptn_bridge->bridge, &ptn3460_bridge_funcs);
if (ret) {
DRM_ERROR("Failed to initialize bridge with drm\n");
goto err;
}
- bridge->driver_private = ptn_bridge;
- encoder->bridge = bridge;
+ encoder->bridge = &ptn_bridge->bridge;
ret = drm_connector_init(dev, &ptn_bridge->connector,
&ptn3460_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 02/14] drm/bridge: do not pass drm_bridge_funcs to drm_bridge_init
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:54 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:54 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Assign the pointer to bridge ops structure(drm_bridge_funcs) in
the bridge driver itself, instead of passing it to drm_bridge_init.
This will allow bridge driver developer to pack bridge private
information inside the bridge object and pass only the drm-relevant
information to drm_bridge_init.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/ptn3460.c | 3 ++-
drivers/gpu/drm/drm_crtc.c | 5 +----
drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 3 ++-
drivers/gpu/drm/sti/sti_hda.c | 3 ++-
drivers/gpu/drm/sti/sti_hdmi.c | 3 ++-
include/drm/drm_crtc.h | 3 +--
6 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index 4db38e1..a2ddc8d 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -313,7 +313,8 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
goto err;
}
- ret = drm_bridge_init(dev, &ptn_bridge->bridge, &ptn3460_bridge_funcs);
+ ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
+ ret = drm_bridge_init(dev, &ptn_bridge->bridge);
if (ret) {
DRM_ERROR("Failed to initialize bridge with drm\n");
goto err;
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index e79c8d3..408c053 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1011,7 +1011,6 @@ EXPORT_SYMBOL(drm_connector_unplug_all);
* drm_bridge_init - initialize a drm transcoder/bridge
* @dev: drm device
* @bridge: transcoder/bridge to set up
- * @funcs: bridge function table
*
* Initialises a preallocated bridge. Bridges should be
* subclassed as part of driver connector objects.
@@ -1019,8 +1018,7 @@ EXPORT_SYMBOL(drm_connector_unplug_all);
* Returns:
* Zero on success, error code on failure.
*/
-int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
- const struct drm_bridge_funcs *funcs)
+int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge)
{
int ret;
@@ -1031,7 +1029,6 @@ int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
goto out;
bridge->dev = dev;
- bridge->funcs = funcs;
list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
dev->mode_config.num_bridge++;
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index f6cf745..0309539 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -221,8 +221,9 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
hdmi_bridge->hdmi = hdmi_reference(hdmi);
bridge = &hdmi_bridge->base;
+ bridge->funcs = &hdmi_bridge_funcs;
- drm_bridge_init(hdmi->dev, bridge, &hdmi_bridge_funcs);
+ drm_bridge_init(hdmi->dev, bridge);
return bridge;
diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
index 2ae9a9b..6cf145d 100644
--- a/drivers/gpu/drm/sti/sti_hda.c
+++ b/drivers/gpu/drm/sti/sti_hda.c
@@ -664,7 +664,8 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
return -ENOMEM;
bridge->driver_private = hda;
- drm_bridge_init(drm_dev, bridge, &sti_hda_bridge_funcs);
+ bridge->funcs = &sti_hda_bridge_funcs;
+ drm_bridge_init(drm_dev, bridge);
encoder->bridge = bridge;
connector->encoder = encoder;
diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
index b22968c..285f723 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.c
+++ b/drivers/gpu/drm/sti/sti_hdmi.c
@@ -628,7 +628,8 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
return -ENOMEM;
bridge->driver_private = hdmi;
- drm_bridge_init(drm_dev, bridge, &sti_hdmi_bridge_funcs);
+ bridge->funcs = &sti_hdmi_bridge_funcs;
+ drm_bridge_init(drm_dev, bridge);
encoder->bridge = bridge;
connector->encoder = encoder;
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index c40070a..5a3bce17 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -912,8 +912,7 @@ extern unsigned int drm_connector_index(struct drm_connector *connector);
/* helper to unplug all connectors from sysfs for device */
extern void drm_connector_unplug_all(struct drm_device *dev);
-extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
- const struct drm_bridge_funcs *funcs);
+extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge);
extern void drm_bridge_cleanup(struct drm_bridge *bridge);
extern int drm_encoder_init(struct drm_device *dev,
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 02/14] drm/bridge: do not pass drm_bridge_funcs to drm_bridge_init
@ 2014-11-15 9:54 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:54 UTC (permalink / raw)
To: linux-arm-kernel
Assign the pointer to bridge ops structure(drm_bridge_funcs) in
the bridge driver itself, instead of passing it to drm_bridge_init.
This will allow bridge driver developer to pack bridge private
information inside the bridge object and pass only the drm-relevant
information to drm_bridge_init.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/ptn3460.c | 3 ++-
drivers/gpu/drm/drm_crtc.c | 5 +----
drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 3 ++-
drivers/gpu/drm/sti/sti_hda.c | 3 ++-
drivers/gpu/drm/sti/sti_hdmi.c | 3 ++-
include/drm/drm_crtc.h | 3 +--
6 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index 4db38e1..a2ddc8d 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -313,7 +313,8 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
goto err;
}
- ret = drm_bridge_init(dev, &ptn_bridge->bridge, &ptn3460_bridge_funcs);
+ ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
+ ret = drm_bridge_init(dev, &ptn_bridge->bridge);
if (ret) {
DRM_ERROR("Failed to initialize bridge with drm\n");
goto err;
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index e79c8d3..408c053 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1011,7 +1011,6 @@ EXPORT_SYMBOL(drm_connector_unplug_all);
* drm_bridge_init - initialize a drm transcoder/bridge
* @dev: drm device
* @bridge: transcoder/bridge to set up
- * @funcs: bridge function table
*
* Initialises a preallocated bridge. Bridges should be
* subclassed as part of driver connector objects.
@@ -1019,8 +1018,7 @@ EXPORT_SYMBOL(drm_connector_unplug_all);
* Returns:
* Zero on success, error code on failure.
*/
-int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
- const struct drm_bridge_funcs *funcs)
+int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge)
{
int ret;
@@ -1031,7 +1029,6 @@ int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
goto out;
bridge->dev = dev;
- bridge->funcs = funcs;
list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
dev->mode_config.num_bridge++;
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index f6cf745..0309539 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -221,8 +221,9 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
hdmi_bridge->hdmi = hdmi_reference(hdmi);
bridge = &hdmi_bridge->base;
+ bridge->funcs = &hdmi_bridge_funcs;
- drm_bridge_init(hdmi->dev, bridge, &hdmi_bridge_funcs);
+ drm_bridge_init(hdmi->dev, bridge);
return bridge;
diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
index 2ae9a9b..6cf145d 100644
--- a/drivers/gpu/drm/sti/sti_hda.c
+++ b/drivers/gpu/drm/sti/sti_hda.c
@@ -664,7 +664,8 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
return -ENOMEM;
bridge->driver_private = hda;
- drm_bridge_init(drm_dev, bridge, &sti_hda_bridge_funcs);
+ bridge->funcs = &sti_hda_bridge_funcs;
+ drm_bridge_init(drm_dev, bridge);
encoder->bridge = bridge;
connector->encoder = encoder;
diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
index b22968c..285f723 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.c
+++ b/drivers/gpu/drm/sti/sti_hdmi.c
@@ -628,7 +628,8 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
return -ENOMEM;
bridge->driver_private = hdmi;
- drm_bridge_init(drm_dev, bridge, &sti_hdmi_bridge_funcs);
+ bridge->funcs = &sti_hdmi_bridge_funcs;
+ drm_bridge_init(drm_dev, bridge);
encoder->bridge = bridge;
connector->encoder = encoder;
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index c40070a..5a3bce17 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -912,8 +912,7 @@ extern unsigned int drm_connector_index(struct drm_connector *connector);
/* helper to unplug all connectors from sysfs for device */
extern void drm_connector_unplug_all(struct drm_device *dev);
-extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
- const struct drm_bridge_funcs *funcs);
+extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge);
extern void drm_bridge_cleanup(struct drm_bridge *bridge);
extern int drm_encoder_init(struct drm_device *dev,
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 03/14] drm/bridge: make bridge registration independent of drm flow
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:54 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:54 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Currently, third party bridge drivers(ptn3460) are dependent
on the corresponding encoder driver init, since bridge driver
needs a drm_device pointer to finish drm initializations.
The encoder driver passes the drm_device pointer to the
bridge driver. Because of this dependency, third party drivers
like ptn3460 doesn't adhere to the driver model.
In this patch, we reframe the bridge registration framework
so that bridge initialization is split into 2 steps, and
bridge registration happens independent of drm flow:
--Step 1: gather all the bridge settings independent of drm and
add the bridge onto a global list of bridges.
--Step 2: when the encoder driver is probed, call drm_bridge_attach
for the corresponding bridge so that the bridge receives
drm_device pointer and continues with connector and other
drm initializations.
The old set of bridge helpers are removed, and a set of new helpers
are added to accomplish the 2 step initialization.
The bridge devices register themselves onto global list of bridges
when they get probed by calling "drm_bridge_add".
The parent encoder driver waits till the bridge is available
in the lookup table(by calling "of_drm_find_bridge") and then
continues with its initialization.
The encoder driver should also call "drm_bridge_attach" to pass
on the drm_device to the bridge object.
drm_bridge_attach inturn calls "bridge->funcs->attach" so that
bridge can continue with drm related initializations.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/Makefile | 2 +-
drivers/gpu/drm/bridge/ptn3460.c | 27 +++++-----
drivers/gpu/drm/drm_bridge.c | 91 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/drm_crtc.c | 65 -----------------------
drivers/gpu/drm/msm/hdmi/hdmi.c | 7 +--
drivers/gpu/drm/msm/hdmi/hdmi.h | 1 +
drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 7 ++-
drivers/gpu/drm/sti/sti_hda.c | 10 +---
drivers/gpu/drm/sti/sti_hdmi.c | 10 +---
include/drm/bridge/ptn3460.h | 8 +++
include/drm/drm_crtc.h | 26 ++++-----
11 files changed, 136 insertions(+), 118 deletions(-)
create mode 100644 drivers/gpu/drm/drm_bridge.c
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 9292a76..00f97a5 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
drm_info.o drm_debugfs.o drm_encoder_slave.o \
drm_trace_points.o drm_global.o drm_prime.o \
drm_rect.o drm_vma_manager.o drm_flip_work.o \
- drm_modeset_lock.o
+ drm_modeset_lock.o drm_bridge.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index a2ddc8d..4a818c1 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -176,24 +176,11 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
{
}
-static void ptn3460_bridge_destroy(struct drm_bridge *bridge)
-{
- struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
-
- drm_bridge_cleanup(bridge);
- 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);
- /* Nothing else to free, we've got devm allocated memory */
-}
-
static struct drm_bridge_funcs ptn3460_bridge_funcs = {
.pre_enable = ptn3460_pre_enable,
.enable = ptn3460_enable,
.disable = ptn3460_disable,
.post_disable = ptn3460_post_disable,
- .destroy = ptn3460_bridge_destroy,
};
static int ptn3460_get_modes(struct drm_connector *connector)
@@ -314,7 +301,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
}
ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
- ret = drm_bridge_init(dev, &ptn_bridge->bridge);
+ ret = drm_bridge_attach(dev, &ptn_bridge->bridge);
if (ret) {
DRM_ERROR("Failed to initialize bridge with drm\n");
goto err;
@@ -343,3 +330,15 @@ err:
return ret;
}
EXPORT_SYMBOL(ptn3460_init);
+
+void ptn3460_destroy(struct drm_bridge *bridge)
+{
+ struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+
+ 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);
+ /* Nothing else to free, we've got devm allocated memory */
+}
+EXPORT_SYMBOL(ptn3460_destroy);
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
new file mode 100644
index 0000000..d1187e5
--- /dev/null
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sub license,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+
+#include <drm/drm_crtc.h>
+
+#include "drm/drmP.h"
+
+static DEFINE_MUTEX(bridge_lock);
+static LIST_HEAD(bridge_list);
+
+int drm_bridge_add(struct drm_bridge *bridge)
+{
+ mutex_lock(&bridge_lock);
+ list_add_tail(&bridge->list, &bridge_list);
+ mutex_unlock(&bridge_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_bridge_add);
+
+void drm_bridge_remove(struct drm_bridge *bridge)
+{
+ mutex_lock(&bridge_lock);
+ list_del_init(&bridge->list);
+ mutex_unlock(&bridge_lock);
+}
+EXPORT_SYMBOL(drm_bridge_remove);
+
+extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge)
+{
+ if (!dev || !bridge)
+ return -EINVAL;
+
+ if (bridge->dev)
+ return -EBUSY;
+
+ bridge->dev = dev;
+
+ if (bridge->funcs->attach)
+ return bridge->funcs->attach(bridge);
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_bridge_attach);
+
+#ifdef CONFIG_OF
+struct drm_bridge *of_drm_find_bridge(struct device_node *np)
+{
+ struct drm_bridge *bridge;
+
+ mutex_lock(&bridge_lock);
+
+ list_for_each_entry(bridge, &bridge_list, list) {
+ if (bridge->of_node == np) {
+ mutex_unlock(&bridge_lock);
+ return bridge;
+ }
+ }
+
+ mutex_unlock(&bridge_lock);
+ return NULL;
+}
+EXPORT_SYMBOL(of_drm_find_bridge);
+#endif
+
+MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");
+MODULE_DESCRIPTION("DRM bridge infrastructure");
+MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 408c053..39d6100 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1008,56 +1008,6 @@ void drm_connector_unplug_all(struct drm_device *dev)
EXPORT_SYMBOL(drm_connector_unplug_all);
/**
- * drm_bridge_init - initialize a drm transcoder/bridge
- * @dev: drm device
- * @bridge: transcoder/bridge to set up
- *
- * Initialises a preallocated bridge. Bridges should be
- * subclassed as part of driver connector objects.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
-int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge)
-{
- int ret;
-
- drm_modeset_lock_all(dev);
-
- ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
- if (ret)
- goto out;
-
- bridge->dev = dev;
-
- list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
- dev->mode_config.num_bridge++;
-
- out:
- drm_modeset_unlock_all(dev);
- return ret;
-}
-EXPORT_SYMBOL(drm_bridge_init);
-
-/**
- * drm_bridge_cleanup - cleans up an initialised bridge
- * @bridge: bridge to cleanup
- *
- * Cleans up the bridge but doesn't free the object.
- */
-void drm_bridge_cleanup(struct drm_bridge *bridge)
-{
- struct drm_device *dev = bridge->dev;
-
- drm_modeset_lock_all(dev);
- drm_mode_object_put(dev, &bridge->base);
- list_del(&bridge->head);
- dev->mode_config.num_bridge--;
- drm_modeset_unlock_all(dev);
-}
-EXPORT_SYMBOL(drm_bridge_cleanup);
-
-/**
* drm_encoder_init - Init a preallocated encoder
* @dev: drm device
* @encoder: the encoder to init
@@ -1539,7 +1489,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
total_objects += dev->mode_config.num_crtc;
total_objects += dev->mode_config.num_connector;
total_objects += dev->mode_config.num_encoder;
- total_objects += dev->mode_config.num_bridge;
group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
if (!group->id_list)
@@ -1548,7 +1497,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
group->num_crtcs = 0;
group->num_connectors = 0;
group->num_encoders = 0;
- group->num_bridges = 0;
return 0;
}
@@ -1568,7 +1516,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
struct drm_crtc *crtc;
struct drm_encoder *encoder;
struct drm_connector *connector;
- struct drm_bridge *bridge;
int ret;
if ((ret = drm_mode_group_init(dev, group)))
@@ -1585,11 +1532,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
group->id_list[group->num_crtcs + group->num_encoders +
group->num_connectors++] = connector->base.id;
- list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
- group->id_list[group->num_crtcs + group->num_encoders +
- group->num_connectors + group->num_bridges++] =
- bridge->base.id;
-
return 0;
}
EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
@@ -5088,7 +5030,6 @@ void drm_mode_config_init(struct drm_device *dev)
INIT_LIST_HEAD(&dev->mode_config.fb_list);
INIT_LIST_HEAD(&dev->mode_config.crtc_list);
INIT_LIST_HEAD(&dev->mode_config.connector_list);
- INIT_LIST_HEAD(&dev->mode_config.bridge_list);
INIT_LIST_HEAD(&dev->mode_config.encoder_list);
INIT_LIST_HEAD(&dev->mode_config.property_list);
INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
@@ -5128,7 +5069,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
struct drm_connector *connector, *ot;
struct drm_crtc *crtc, *ct;
struct drm_encoder *encoder, *enct;
- struct drm_bridge *bridge, *brt;
struct drm_framebuffer *fb, *fbt;
struct drm_property *property, *pt;
struct drm_property_blob *blob, *bt;
@@ -5139,11 +5079,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
encoder->funcs->destroy(encoder);
}
- list_for_each_entry_safe(bridge, brt,
- &dev->mode_config.bridge_list, head) {
- bridge->funcs->destroy(bridge);
- }
-
list_for_each_entry_safe(connector, ot,
&dev->mode_config.connector_list, head) {
connector->funcs->destroy(connector);
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index 9d00dcb..e4f249b 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -65,6 +65,9 @@ void hdmi_destroy(struct kref *kref)
if (hdmi->i2c)
hdmi_i2c_destroy(hdmi->i2c);
+ if (hdmi->bridge)
+ hdmi_bridge_destroy(hdmi->bridge);
+
platform_set_drvdata(hdmi->pdev, NULL);
}
@@ -234,9 +237,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
fail:
if (hdmi) {
- /* bridge/connector are normally destroyed by drm: */
- if (hdmi->bridge)
- hdmi->bridge->funcs->destroy(hdmi->bridge);
+ /* bridge is normally destroyed by drm: */
if (hdmi->connector)
hdmi->connector->funcs->destroy(hdmi->connector);
hdmi_destroy(&hdmi->refcount);
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
index b981995..d2cf7f4 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
@@ -163,6 +163,7 @@ void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
*/
struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi);
+void hdmi_bridge_destroy(struct drm_bridge *bridge);
/*
* hdmi connector:
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index 0309539..26657a0 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -23,11 +23,11 @@ struct hdmi_bridge {
};
#define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
-static void hdmi_bridge_destroy(struct drm_bridge *bridge)
+void hdmi_bridge_destroy(struct drm_bridge *bridge)
{
struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
+
hdmi_unreference(hdmi_bridge->hdmi);
- drm_bridge_cleanup(bridge);
kfree(hdmi_bridge);
}
@@ -201,7 +201,6 @@ static const struct drm_bridge_funcs hdmi_bridge_funcs = {
.disable = hdmi_bridge_disable,
.post_disable = hdmi_bridge_post_disable,
.mode_set = hdmi_bridge_mode_set,
- .destroy = hdmi_bridge_destroy,
};
@@ -223,7 +222,7 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
bridge = &hdmi_bridge->base;
bridge->funcs = &hdmi_bridge_funcs;
- drm_bridge_init(hdmi->dev, bridge);
+ drm_bridge_attach(hdmi->dev, bridge);
return bridge;
diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
index 6cf145d..a9bbb08 100644
--- a/drivers/gpu/drm/sti/sti_hda.c
+++ b/drivers/gpu/drm/sti/sti_hda.c
@@ -508,19 +508,12 @@ static void sti_hda_bridge_nope(struct drm_bridge *bridge)
/* do nothing */
}
-static void sti_hda_brigde_destroy(struct drm_bridge *bridge)
-{
- drm_bridge_cleanup(bridge);
- kfree(bridge);
-}
-
static const struct drm_bridge_funcs sti_hda_bridge_funcs = {
.pre_enable = sti_hda_pre_enable,
.enable = sti_hda_bridge_nope,
.disable = sti_hda_disable,
.post_disable = sti_hda_bridge_nope,
.mode_set = sti_hda_set_mode,
- .destroy = sti_hda_brigde_destroy,
};
static int sti_hda_connector_get_modes(struct drm_connector *connector)
@@ -665,7 +658,7 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
bridge->driver_private = hda;
bridge->funcs = &sti_hda_bridge_funcs;
- drm_bridge_init(drm_dev, bridge);
+ drm_bridge_attach(drm_dev, bridge);
encoder->bridge = bridge;
connector->encoder = encoder;
@@ -694,7 +687,6 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
err_sysfs:
drm_connector_unregister(drm_connector);
err_connector:
- drm_bridge_cleanup(bridge);
drm_connector_cleanup(drm_connector);
return -EINVAL;
}
diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
index 285f723..bf4cdb8 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.c
+++ b/drivers/gpu/drm/sti/sti_hdmi.c
@@ -463,19 +463,12 @@ static void sti_hdmi_bridge_nope(struct drm_bridge *bridge)
/* do nothing */
}
-static void sti_hdmi_brigde_destroy(struct drm_bridge *bridge)
-{
- drm_bridge_cleanup(bridge);
- kfree(bridge);
-}
-
static const struct drm_bridge_funcs sti_hdmi_bridge_funcs = {
.pre_enable = sti_hdmi_pre_enable,
.enable = sti_hdmi_bridge_nope,
.disable = sti_hdmi_disable,
.post_disable = sti_hdmi_bridge_nope,
.mode_set = sti_hdmi_set_mode,
- .destroy = sti_hdmi_brigde_destroy,
};
static int sti_hdmi_connector_get_modes(struct drm_connector *connector)
@@ -629,7 +622,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
bridge->driver_private = hdmi;
bridge->funcs = &sti_hdmi_bridge_funcs;
- drm_bridge_init(drm_dev, bridge);
+ drm_bridge_attach(drm_dev, bridge);
encoder->bridge = bridge;
connector->encoder = encoder;
@@ -661,7 +654,6 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
err_sysfs:
drm_connector_unregister(drm_connector);
err_connector:
- drm_bridge_cleanup(bridge);
drm_connector_cleanup(drm_connector);
return -EINVAL;
}
diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h
index ff62344..b11f8e1 100644
--- a/include/drm/bridge/ptn3460.h
+++ b/include/drm/bridge/ptn3460.h
@@ -15,6 +15,7 @@
#define _DRM_BRIDGE_PTN3460_H_
struct drm_device;
+struct drm_bridge;
struct drm_encoder;
struct i2c_client;
struct device_node;
@@ -23,6 +24,9 @@ struct device_node;
int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
struct i2c_client *client, struct device_node *node);
+
+void ptn3460_destroy(struct drm_bridge *bridge);
+
#else
static inline int ptn3460_init(struct drm_device *dev,
@@ -32,6 +36,10 @@ static inline int ptn3460_init(struct drm_device *dev,
return 0;
}
+static inline void ptn3460_destroy(struct drm_bridge *bridge)
+{
+}
+
#endif
#endif
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 5a3bce17..da2beaf 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -633,15 +633,16 @@ struct drm_plane {
/**
* drm_bridge_funcs - drm_bridge control functions
+ * @attach: Called during drm_bridge_attach
* @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
* @disable: Called right before encoder prepare, disables the bridge
* @post_disable: Called right after encoder prepare, for lockstepped disable
* @mode_set: Set this mode to the bridge
* @pre_enable: Called right before encoder commit, for lockstepped commit
* @enable: Called right after encoder commit, enables the bridge
- * @destroy: make object go away
*/
struct drm_bridge_funcs {
+ int (*attach)(struct drm_bridge *bridge);
bool (*mode_fixup)(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
@@ -652,22 +653,24 @@ struct drm_bridge_funcs {
struct drm_display_mode *adjusted_mode);
void (*pre_enable)(struct drm_bridge *bridge);
void (*enable)(struct drm_bridge *bridge);
- void (*destroy)(struct drm_bridge *bridge);
};
/**
* drm_bridge - central DRM bridge control structure
* @dev: DRM device this bridge belongs to
- * @head: list management
+ * @of_node: device node pointer to the bridge
+ * @list: to keep track of all added bridges
* @base: base mode object
* @funcs: control functions
* @driver_private: pointer to the bridge driver's internal context
*/
struct drm_bridge {
struct drm_device *dev;
- struct list_head head;
-
- struct drm_mode_object base;
+ struct drm_encoder *encoder;
+#ifdef CONFIG_OF
+ struct device_node *of_node;
+#endif
+ struct list_head list;
const struct drm_bridge_funcs *funcs;
void *driver_private;
@@ -733,7 +736,6 @@ struct drm_mode_group {
uint32_t num_crtcs;
uint32_t num_encoders;
uint32_t num_connectors;
- uint32_t num_bridges;
/* list of object IDs for this group */
uint32_t *id_list;
@@ -748,8 +750,6 @@ struct drm_mode_group {
* @fb_list: list of framebuffers available
* @num_connector: number of connectors on this device
* @connector_list: list of connector objects
- * @num_bridge: number of bridges on this device
- * @bridge_list: list of bridge objects
* @num_encoder: number of encoders on this device
* @encoder_list: list of encoder objects
* @num_crtc: number of CRTCs on this device
@@ -789,8 +789,6 @@ struct drm_mode_config {
int num_connector;
struct list_head connector_list;
- int num_bridge;
- struct list_head bridge_list;
int num_encoder;
struct list_head encoder_list;
@@ -912,8 +910,10 @@ extern unsigned int drm_connector_index(struct drm_connector *connector);
/* helper to unplug all connectors from sysfs for device */
extern void drm_connector_unplug_all(struct drm_device *dev);
-extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge);
-extern void drm_bridge_cleanup(struct drm_bridge *bridge);
+extern int drm_bridge_add(struct drm_bridge *bridge);
+extern void drm_bridge_remove(struct drm_bridge *bridge);
+extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
+extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
extern int drm_encoder_init(struct drm_device *dev,
struct drm_encoder *encoder,
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 03/14] drm/bridge: make bridge registration independent of drm flow
@ 2014-11-15 9:54 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:54 UTC (permalink / raw)
To: linux-arm-kernel
Currently, third party bridge drivers(ptn3460) are dependent
on the corresponding encoder driver init, since bridge driver
needs a drm_device pointer to finish drm initializations.
The encoder driver passes the drm_device pointer to the
bridge driver. Because of this dependency, third party drivers
like ptn3460 doesn't adhere to the driver model.
In this patch, we reframe the bridge registration framework
so that bridge initialization is split into 2 steps, and
bridge registration happens independent of drm flow:
--Step 1: gather all the bridge settings independent of drm and
add the bridge onto a global list of bridges.
--Step 2: when the encoder driver is probed, call drm_bridge_attach
for the corresponding bridge so that the bridge receives
drm_device pointer and continues with connector and other
drm initializations.
The old set of bridge helpers are removed, and a set of new helpers
are added to accomplish the 2 step initialization.
The bridge devices register themselves onto global list of bridges
when they get probed by calling "drm_bridge_add".
The parent encoder driver waits till the bridge is available
in the lookup table(by calling "of_drm_find_bridge") and then
continues with its initialization.
The encoder driver should also call "drm_bridge_attach" to pass
on the drm_device to the bridge object.
drm_bridge_attach inturn calls "bridge->funcs->attach" so that
bridge can continue with drm related initializations.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/Makefile | 2 +-
drivers/gpu/drm/bridge/ptn3460.c | 27 +++++-----
drivers/gpu/drm/drm_bridge.c | 91 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/drm_crtc.c | 65 -----------------------
drivers/gpu/drm/msm/hdmi/hdmi.c | 7 +--
drivers/gpu/drm/msm/hdmi/hdmi.h | 1 +
drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 7 ++-
drivers/gpu/drm/sti/sti_hda.c | 10 +---
drivers/gpu/drm/sti/sti_hdmi.c | 10 +---
include/drm/bridge/ptn3460.h | 8 +++
include/drm/drm_crtc.h | 26 ++++-----
11 files changed, 136 insertions(+), 118 deletions(-)
create mode 100644 drivers/gpu/drm/drm_bridge.c
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 9292a76..00f97a5 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
drm_info.o drm_debugfs.o drm_encoder_slave.o \
drm_trace_points.o drm_global.o drm_prime.o \
drm_rect.o drm_vma_manager.o drm_flip_work.o \
- drm_modeset_lock.o
+ drm_modeset_lock.o drm_bridge.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index a2ddc8d..4a818c1 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -176,24 +176,11 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
{
}
-static void ptn3460_bridge_destroy(struct drm_bridge *bridge)
-{
- struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
-
- drm_bridge_cleanup(bridge);
- 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);
- /* Nothing else to free, we've got devm allocated memory */
-}
-
static struct drm_bridge_funcs ptn3460_bridge_funcs = {
.pre_enable = ptn3460_pre_enable,
.enable = ptn3460_enable,
.disable = ptn3460_disable,
.post_disable = ptn3460_post_disable,
- .destroy = ptn3460_bridge_destroy,
};
static int ptn3460_get_modes(struct drm_connector *connector)
@@ -314,7 +301,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
}
ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
- ret = drm_bridge_init(dev, &ptn_bridge->bridge);
+ ret = drm_bridge_attach(dev, &ptn_bridge->bridge);
if (ret) {
DRM_ERROR("Failed to initialize bridge with drm\n");
goto err;
@@ -343,3 +330,15 @@ err:
return ret;
}
EXPORT_SYMBOL(ptn3460_init);
+
+void ptn3460_destroy(struct drm_bridge *bridge)
+{
+ struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+
+ 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);
+ /* Nothing else to free, we've got devm allocated memory */
+}
+EXPORT_SYMBOL(ptn3460_destroy);
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
new file mode 100644
index 0000000..d1187e5
--- /dev/null
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sub license,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+
+#include <drm/drm_crtc.h>
+
+#include "drm/drmP.h"
+
+static DEFINE_MUTEX(bridge_lock);
+static LIST_HEAD(bridge_list);
+
+int drm_bridge_add(struct drm_bridge *bridge)
+{
+ mutex_lock(&bridge_lock);
+ list_add_tail(&bridge->list, &bridge_list);
+ mutex_unlock(&bridge_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_bridge_add);
+
+void drm_bridge_remove(struct drm_bridge *bridge)
+{
+ mutex_lock(&bridge_lock);
+ list_del_init(&bridge->list);
+ mutex_unlock(&bridge_lock);
+}
+EXPORT_SYMBOL(drm_bridge_remove);
+
+extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge)
+{
+ if (!dev || !bridge)
+ return -EINVAL;
+
+ if (bridge->dev)
+ return -EBUSY;
+
+ bridge->dev = dev;
+
+ if (bridge->funcs->attach)
+ return bridge->funcs->attach(bridge);
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_bridge_attach);
+
+#ifdef CONFIG_OF
+struct drm_bridge *of_drm_find_bridge(struct device_node *np)
+{
+ struct drm_bridge *bridge;
+
+ mutex_lock(&bridge_lock);
+
+ list_for_each_entry(bridge, &bridge_list, list) {
+ if (bridge->of_node == np) {
+ mutex_unlock(&bridge_lock);
+ return bridge;
+ }
+ }
+
+ mutex_unlock(&bridge_lock);
+ return NULL;
+}
+EXPORT_SYMBOL(of_drm_find_bridge);
+#endif
+
+MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");
+MODULE_DESCRIPTION("DRM bridge infrastructure");
+MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 408c053..39d6100 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1008,56 +1008,6 @@ void drm_connector_unplug_all(struct drm_device *dev)
EXPORT_SYMBOL(drm_connector_unplug_all);
/**
- * drm_bridge_init - initialize a drm transcoder/bridge
- * @dev: drm device
- * @bridge: transcoder/bridge to set up
- *
- * Initialises a preallocated bridge. Bridges should be
- * subclassed as part of driver connector objects.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
-int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge)
-{
- int ret;
-
- drm_modeset_lock_all(dev);
-
- ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
- if (ret)
- goto out;
-
- bridge->dev = dev;
-
- list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
- dev->mode_config.num_bridge++;
-
- out:
- drm_modeset_unlock_all(dev);
- return ret;
-}
-EXPORT_SYMBOL(drm_bridge_init);
-
-/**
- * drm_bridge_cleanup - cleans up an initialised bridge
- * @bridge: bridge to cleanup
- *
- * Cleans up the bridge but doesn't free the object.
- */
-void drm_bridge_cleanup(struct drm_bridge *bridge)
-{
- struct drm_device *dev = bridge->dev;
-
- drm_modeset_lock_all(dev);
- drm_mode_object_put(dev, &bridge->base);
- list_del(&bridge->head);
- dev->mode_config.num_bridge--;
- drm_modeset_unlock_all(dev);
-}
-EXPORT_SYMBOL(drm_bridge_cleanup);
-
-/**
* drm_encoder_init - Init a preallocated encoder
* @dev: drm device
* @encoder: the encoder to init
@@ -1539,7 +1489,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
total_objects += dev->mode_config.num_crtc;
total_objects += dev->mode_config.num_connector;
total_objects += dev->mode_config.num_encoder;
- total_objects += dev->mode_config.num_bridge;
group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
if (!group->id_list)
@@ -1548,7 +1497,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
group->num_crtcs = 0;
group->num_connectors = 0;
group->num_encoders = 0;
- group->num_bridges = 0;
return 0;
}
@@ -1568,7 +1516,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
struct drm_crtc *crtc;
struct drm_encoder *encoder;
struct drm_connector *connector;
- struct drm_bridge *bridge;
int ret;
if ((ret = drm_mode_group_init(dev, group)))
@@ -1585,11 +1532,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
group->id_list[group->num_crtcs + group->num_encoders +
group->num_connectors++] = connector->base.id;
- list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
- group->id_list[group->num_crtcs + group->num_encoders +
- group->num_connectors + group->num_bridges++] =
- bridge->base.id;
-
return 0;
}
EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
@@ -5088,7 +5030,6 @@ void drm_mode_config_init(struct drm_device *dev)
INIT_LIST_HEAD(&dev->mode_config.fb_list);
INIT_LIST_HEAD(&dev->mode_config.crtc_list);
INIT_LIST_HEAD(&dev->mode_config.connector_list);
- INIT_LIST_HEAD(&dev->mode_config.bridge_list);
INIT_LIST_HEAD(&dev->mode_config.encoder_list);
INIT_LIST_HEAD(&dev->mode_config.property_list);
INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
@@ -5128,7 +5069,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
struct drm_connector *connector, *ot;
struct drm_crtc *crtc, *ct;
struct drm_encoder *encoder, *enct;
- struct drm_bridge *bridge, *brt;
struct drm_framebuffer *fb, *fbt;
struct drm_property *property, *pt;
struct drm_property_blob *blob, *bt;
@@ -5139,11 +5079,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
encoder->funcs->destroy(encoder);
}
- list_for_each_entry_safe(bridge, brt,
- &dev->mode_config.bridge_list, head) {
- bridge->funcs->destroy(bridge);
- }
-
list_for_each_entry_safe(connector, ot,
&dev->mode_config.connector_list, head) {
connector->funcs->destroy(connector);
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index 9d00dcb..e4f249b 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -65,6 +65,9 @@ void hdmi_destroy(struct kref *kref)
if (hdmi->i2c)
hdmi_i2c_destroy(hdmi->i2c);
+ if (hdmi->bridge)
+ hdmi_bridge_destroy(hdmi->bridge);
+
platform_set_drvdata(hdmi->pdev, NULL);
}
@@ -234,9 +237,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
fail:
if (hdmi) {
- /* bridge/connector are normally destroyed by drm: */
- if (hdmi->bridge)
- hdmi->bridge->funcs->destroy(hdmi->bridge);
+ /* bridge is normally destroyed by drm: */
if (hdmi->connector)
hdmi->connector->funcs->destroy(hdmi->connector);
hdmi_destroy(&hdmi->refcount);
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
index b981995..d2cf7f4 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
@@ -163,6 +163,7 @@ void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
*/
struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi);
+void hdmi_bridge_destroy(struct drm_bridge *bridge);
/*
* hdmi connector:
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index 0309539..26657a0 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -23,11 +23,11 @@ struct hdmi_bridge {
};
#define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
-static void hdmi_bridge_destroy(struct drm_bridge *bridge)
+void hdmi_bridge_destroy(struct drm_bridge *bridge)
{
struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
+
hdmi_unreference(hdmi_bridge->hdmi);
- drm_bridge_cleanup(bridge);
kfree(hdmi_bridge);
}
@@ -201,7 +201,6 @@ static const struct drm_bridge_funcs hdmi_bridge_funcs = {
.disable = hdmi_bridge_disable,
.post_disable = hdmi_bridge_post_disable,
.mode_set = hdmi_bridge_mode_set,
- .destroy = hdmi_bridge_destroy,
};
@@ -223,7 +222,7 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
bridge = &hdmi_bridge->base;
bridge->funcs = &hdmi_bridge_funcs;
- drm_bridge_init(hdmi->dev, bridge);
+ drm_bridge_attach(hdmi->dev, bridge);
return bridge;
diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
index 6cf145d..a9bbb08 100644
--- a/drivers/gpu/drm/sti/sti_hda.c
+++ b/drivers/gpu/drm/sti/sti_hda.c
@@ -508,19 +508,12 @@ static void sti_hda_bridge_nope(struct drm_bridge *bridge)
/* do nothing */
}
-static void sti_hda_brigde_destroy(struct drm_bridge *bridge)
-{
- drm_bridge_cleanup(bridge);
- kfree(bridge);
-}
-
static const struct drm_bridge_funcs sti_hda_bridge_funcs = {
.pre_enable = sti_hda_pre_enable,
.enable = sti_hda_bridge_nope,
.disable = sti_hda_disable,
.post_disable = sti_hda_bridge_nope,
.mode_set = sti_hda_set_mode,
- .destroy = sti_hda_brigde_destroy,
};
static int sti_hda_connector_get_modes(struct drm_connector *connector)
@@ -665,7 +658,7 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
bridge->driver_private = hda;
bridge->funcs = &sti_hda_bridge_funcs;
- drm_bridge_init(drm_dev, bridge);
+ drm_bridge_attach(drm_dev, bridge);
encoder->bridge = bridge;
connector->encoder = encoder;
@@ -694,7 +687,6 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
err_sysfs:
drm_connector_unregister(drm_connector);
err_connector:
- drm_bridge_cleanup(bridge);
drm_connector_cleanup(drm_connector);
return -EINVAL;
}
diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
index 285f723..bf4cdb8 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.c
+++ b/drivers/gpu/drm/sti/sti_hdmi.c
@@ -463,19 +463,12 @@ static void sti_hdmi_bridge_nope(struct drm_bridge *bridge)
/* do nothing */
}
-static void sti_hdmi_brigde_destroy(struct drm_bridge *bridge)
-{
- drm_bridge_cleanup(bridge);
- kfree(bridge);
-}
-
static const struct drm_bridge_funcs sti_hdmi_bridge_funcs = {
.pre_enable = sti_hdmi_pre_enable,
.enable = sti_hdmi_bridge_nope,
.disable = sti_hdmi_disable,
.post_disable = sti_hdmi_bridge_nope,
.mode_set = sti_hdmi_set_mode,
- .destroy = sti_hdmi_brigde_destroy,
};
static int sti_hdmi_connector_get_modes(struct drm_connector *connector)
@@ -629,7 +622,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
bridge->driver_private = hdmi;
bridge->funcs = &sti_hdmi_bridge_funcs;
- drm_bridge_init(drm_dev, bridge);
+ drm_bridge_attach(drm_dev, bridge);
encoder->bridge = bridge;
connector->encoder = encoder;
@@ -661,7 +654,6 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
err_sysfs:
drm_connector_unregister(drm_connector);
err_connector:
- drm_bridge_cleanup(bridge);
drm_connector_cleanup(drm_connector);
return -EINVAL;
}
diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h
index ff62344..b11f8e1 100644
--- a/include/drm/bridge/ptn3460.h
+++ b/include/drm/bridge/ptn3460.h
@@ -15,6 +15,7 @@
#define _DRM_BRIDGE_PTN3460_H_
struct drm_device;
+struct drm_bridge;
struct drm_encoder;
struct i2c_client;
struct device_node;
@@ -23,6 +24,9 @@ struct device_node;
int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
struct i2c_client *client, struct device_node *node);
+
+void ptn3460_destroy(struct drm_bridge *bridge);
+
#else
static inline int ptn3460_init(struct drm_device *dev,
@@ -32,6 +36,10 @@ static inline int ptn3460_init(struct drm_device *dev,
return 0;
}
+static inline void ptn3460_destroy(struct drm_bridge *bridge)
+{
+}
+
#endif
#endif
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 5a3bce17..da2beaf 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -633,15 +633,16 @@ struct drm_plane {
/**
* drm_bridge_funcs - drm_bridge control functions
+ * @attach: Called during drm_bridge_attach
* @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
* @disable: Called right before encoder prepare, disables the bridge
* @post_disable: Called right after encoder prepare, for lockstepped disable
* @mode_set: Set this mode to the bridge
* @pre_enable: Called right before encoder commit, for lockstepped commit
* @enable: Called right after encoder commit, enables the bridge
- * @destroy: make object go away
*/
struct drm_bridge_funcs {
+ int (*attach)(struct drm_bridge *bridge);
bool (*mode_fixup)(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
@@ -652,22 +653,24 @@ struct drm_bridge_funcs {
struct drm_display_mode *adjusted_mode);
void (*pre_enable)(struct drm_bridge *bridge);
void (*enable)(struct drm_bridge *bridge);
- void (*destroy)(struct drm_bridge *bridge);
};
/**
* drm_bridge - central DRM bridge control structure
* @dev: DRM device this bridge belongs to
- * @head: list management
+ * @of_node: device node pointer to the bridge
+ * @list: to keep track of all added bridges
* @base: base mode object
* @funcs: control functions
* @driver_private: pointer to the bridge driver's internal context
*/
struct drm_bridge {
struct drm_device *dev;
- struct list_head head;
-
- struct drm_mode_object base;
+ struct drm_encoder *encoder;
+#ifdef CONFIG_OF
+ struct device_node *of_node;
+#endif
+ struct list_head list;
const struct drm_bridge_funcs *funcs;
void *driver_private;
@@ -733,7 +736,6 @@ struct drm_mode_group {
uint32_t num_crtcs;
uint32_t num_encoders;
uint32_t num_connectors;
- uint32_t num_bridges;
/* list of object IDs for this group */
uint32_t *id_list;
@@ -748,8 +750,6 @@ struct drm_mode_group {
* @fb_list: list of framebuffers available
* @num_connector: number of connectors on this device
* @connector_list: list of connector objects
- * @num_bridge: number of bridges on this device
- * @bridge_list: list of bridge objects
* @num_encoder: number of encoders on this device
* @encoder_list: list of encoder objects
* @num_crtc: number of CRTCs on this device
@@ -789,8 +789,6 @@ struct drm_mode_config {
int num_connector;
struct list_head connector_list;
- int num_bridge;
- struct list_head bridge_list;
int num_encoder;
struct list_head encoder_list;
@@ -912,8 +910,10 @@ extern unsigned int drm_connector_index(struct drm_connector *connector);
/* helper to unplug all connectors from sysfs for device */
extern void drm_connector_unplug_all(struct drm_device *dev);
-extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge);
-extern void drm_bridge_cleanup(struct drm_bridge *bridge);
+extern int drm_bridge_add(struct drm_bridge *bridge);
+extern void drm_bridge_remove(struct drm_bridge *bridge);
+extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
+extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
extern int drm_encoder_init(struct drm_device *dev,
struct drm_encoder *encoder,
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* Re: [PATCH V8 03/14] drm/bridge: make bridge registration independent of drm flow
2014-11-15 9:54 ` Ajay Kumar
@ 2014-12-02 6:01 ` Ajay kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2014-12-02 6:01 UTC (permalink / raw)
To: Daniel Vetter
Cc: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc,
Ajay Kumar, InKi Dae, Kukjin Kim, Sean Paul, Thierry Reding,
Daniel Vetter, Pannaga Bhushan Reddy Patel, Prashanth G
On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> Currently, third party bridge drivers(ptn3460) are dependent
> on the corresponding encoder driver init, since bridge driver
> needs a drm_device pointer to finish drm initializations.
> The encoder driver passes the drm_device pointer to the
> bridge driver. Because of this dependency, third party drivers
> like ptn3460 doesn't adhere to the driver model.
>
> In this patch, we reframe the bridge registration framework
> so that bridge initialization is split into 2 steps, and
> bridge registration happens independent of drm flow:
> --Step 1: gather all the bridge settings independent of drm and
> add the bridge onto a global list of bridges.
> --Step 2: when the encoder driver is probed, call drm_bridge_attach
> for the corresponding bridge so that the bridge receives
> drm_device pointer and continues with connector and other
> drm initializations.
>
> The old set of bridge helpers are removed, and a set of new helpers
> are added to accomplish the 2 step initialization.
>
> The bridge devices register themselves onto global list of bridges
> when they get probed by calling "drm_bridge_add".
>
> The parent encoder driver waits till the bridge is available
> in the lookup table(by calling "of_drm_find_bridge") and then
> continues with its initialization.
>
> The encoder driver should also call "drm_bridge_attach" to pass
> on the drm_device to the bridge object.
>
> drm_bridge_attach inturn calls "bridge->funcs->attach" so that
> bridge can continue with drm related initializations.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
> drivers/gpu/drm/Makefile | 2 +-
> drivers/gpu/drm/bridge/ptn3460.c | 27 +++++-----
> drivers/gpu/drm/drm_bridge.c | 91 ++++++++++++++++++++++++++++++++
> drivers/gpu/drm/drm_crtc.c | 65 -----------------------
> drivers/gpu/drm/msm/hdmi/hdmi.c | 7 +--
> drivers/gpu/drm/msm/hdmi/hdmi.h | 1 +
> drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 7 ++-
> drivers/gpu/drm/sti/sti_hda.c | 10 +---
> drivers/gpu/drm/sti/sti_hdmi.c | 10 +---
> include/drm/bridge/ptn3460.h | 8 +++
> include/drm/drm_crtc.h | 26 ++++-----
> 11 files changed, 136 insertions(+), 118 deletions(-)
> create mode 100644 drivers/gpu/drm/drm_bridge.c
>
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index 9292a76..00f97a5 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
> drm_info.o drm_debugfs.o drm_encoder_slave.o \
> drm_trace_points.o drm_global.o drm_prime.o \
> drm_rect.o drm_vma_manager.o drm_flip_work.o \
> - drm_modeset_lock.o
> + drm_modeset_lock.o drm_bridge.o
>
> drm-$(CONFIG_COMPAT) += drm_ioc32.o
> drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
> diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
> index a2ddc8d..4a818c1 100644
> --- a/drivers/gpu/drm/bridge/ptn3460.c
> +++ b/drivers/gpu/drm/bridge/ptn3460.c
> @@ -176,24 +176,11 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
> {
> }
>
> -static void ptn3460_bridge_destroy(struct drm_bridge *bridge)
> -{
> - struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
> -
> - drm_bridge_cleanup(bridge);
> - 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);
> - /* Nothing else to free, we've got devm allocated memory */
> -}
> -
> static struct drm_bridge_funcs ptn3460_bridge_funcs = {
> .pre_enable = ptn3460_pre_enable,
> .enable = ptn3460_enable,
> .disable = ptn3460_disable,
> .post_disable = ptn3460_post_disable,
> - .destroy = ptn3460_bridge_destroy,
> };
>
> static int ptn3460_get_modes(struct drm_connector *connector)
> @@ -314,7 +301,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
> }
>
> ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
> - ret = drm_bridge_init(dev, &ptn_bridge->bridge);
> + ret = drm_bridge_attach(dev, &ptn_bridge->bridge);
> if (ret) {
> DRM_ERROR("Failed to initialize bridge with drm\n");
> goto err;
> @@ -343,3 +330,15 @@ err:
> return ret;
> }
> EXPORT_SYMBOL(ptn3460_init);
> +
> +void ptn3460_destroy(struct drm_bridge *bridge)
> +{
> + struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
> +
> + 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);
> + /* Nothing else to free, we've got devm allocated memory */
> +}
> +EXPORT_SYMBOL(ptn3460_destroy);
> diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
> new file mode 100644
> index 0000000..d1187e5
> --- /dev/null
> +++ b/drivers/gpu/drm/drm_bridge.c
> @@ -0,0 +1,91 @@
> +/*
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sub license,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the
> + * next paragraph) shall be included in all copies or substantial portions
> + * of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> + * DEALINGS IN THE SOFTWARE.
> + */
> +
> +#include <linux/err.h>
> +#include <linux/module.h>
> +
> +#include <drm/drm_crtc.h>
> +
> +#include "drm/drmP.h"
> +
> +static DEFINE_MUTEX(bridge_lock);
> +static LIST_HEAD(bridge_list);
> +
> +int drm_bridge_add(struct drm_bridge *bridge)
> +{
> + mutex_lock(&bridge_lock);
> + list_add_tail(&bridge->list, &bridge_list);
> + mutex_unlock(&bridge_lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_bridge_add);
> +
> +void drm_bridge_remove(struct drm_bridge *bridge)
> +{
> + mutex_lock(&bridge_lock);
> + list_del_init(&bridge->list);
> + mutex_unlock(&bridge_lock);
> +}
> +EXPORT_SYMBOL(drm_bridge_remove);
> +
> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge)
> +{
> + if (!dev || !bridge)
> + return -EINVAL;
> +
> + if (bridge->dev)
> + return -EBUSY;
> +
> + bridge->dev = dev;
> +
> + if (bridge->funcs->attach)
> + return bridge->funcs->attach(bridge);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_bridge_attach);
> +
> +#ifdef CONFIG_OF
> +struct drm_bridge *of_drm_find_bridge(struct device_node *np)
> +{
> + struct drm_bridge *bridge;
> +
> + mutex_lock(&bridge_lock);
> +
> + list_for_each_entry(bridge, &bridge_list, list) {
> + if (bridge->of_node == np) {
> + mutex_unlock(&bridge_lock);
> + return bridge;
> + }
> + }
> +
> + mutex_unlock(&bridge_lock);
> + return NULL;
> +}
> +EXPORT_SYMBOL(of_drm_find_bridge);
> +#endif
> +
> +MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");
> +MODULE_DESCRIPTION("DRM bridge infrastructure");
> +MODULE_LICENSE("GPL and additional rights");
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index 408c053..39d6100 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -1008,56 +1008,6 @@ void drm_connector_unplug_all(struct drm_device *dev)
> EXPORT_SYMBOL(drm_connector_unplug_all);
>
> /**
> - * drm_bridge_init - initialize a drm transcoder/bridge
> - * @dev: drm device
> - * @bridge: transcoder/bridge to set up
> - *
> - * Initialises a preallocated bridge. Bridges should be
> - * subclassed as part of driver connector objects.
> - *
> - * Returns:
> - * Zero on success, error code on failure.
> - */
> -int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge)
> -{
> - int ret;
> -
> - drm_modeset_lock_all(dev);
> -
> - ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
> - if (ret)
> - goto out;
> -
> - bridge->dev = dev;
> -
> - list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
> - dev->mode_config.num_bridge++;
> -
> - out:
> - drm_modeset_unlock_all(dev);
> - return ret;
> -}
> -EXPORT_SYMBOL(drm_bridge_init);
> -
> -/**
> - * drm_bridge_cleanup - cleans up an initialised bridge
> - * @bridge: bridge to cleanup
> - *
> - * Cleans up the bridge but doesn't free the object.
> - */
> -void drm_bridge_cleanup(struct drm_bridge *bridge)
> -{
> - struct drm_device *dev = bridge->dev;
> -
> - drm_modeset_lock_all(dev);
> - drm_mode_object_put(dev, &bridge->base);
> - list_del(&bridge->head);
> - dev->mode_config.num_bridge--;
> - drm_modeset_unlock_all(dev);
> -}
> -EXPORT_SYMBOL(drm_bridge_cleanup);
> -
> -/**
> * drm_encoder_init - Init a preallocated encoder
> * @dev: drm device
> * @encoder: the encoder to init
> @@ -1539,7 +1489,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
> total_objects += dev->mode_config.num_crtc;
> total_objects += dev->mode_config.num_connector;
> total_objects += dev->mode_config.num_encoder;
> - total_objects += dev->mode_config.num_bridge;
>
> group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
> if (!group->id_list)
> @@ -1548,7 +1497,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
> group->num_crtcs = 0;
> group->num_connectors = 0;
> group->num_encoders = 0;
> - group->num_bridges = 0;
> return 0;
> }
>
> @@ -1568,7 +1516,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
> struct drm_crtc *crtc;
> struct drm_encoder *encoder;
> struct drm_connector *connector;
> - struct drm_bridge *bridge;
> int ret;
>
> if ((ret = drm_mode_group_init(dev, group)))
> @@ -1585,11 +1532,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
> group->id_list[group->num_crtcs + group->num_encoders +
> group->num_connectors++] = connector->base.id;
>
> - list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
> - group->id_list[group->num_crtcs + group->num_encoders +
> - group->num_connectors + group->num_bridges++] =
> - bridge->base.id;
> -
> return 0;
> }
> EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
> @@ -5088,7 +5030,6 @@ void drm_mode_config_init(struct drm_device *dev)
> INIT_LIST_HEAD(&dev->mode_config.fb_list);
> INIT_LIST_HEAD(&dev->mode_config.crtc_list);
> INIT_LIST_HEAD(&dev->mode_config.connector_list);
> - INIT_LIST_HEAD(&dev->mode_config.bridge_list);
> INIT_LIST_HEAD(&dev->mode_config.encoder_list);
> INIT_LIST_HEAD(&dev->mode_config.property_list);
> INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
> @@ -5128,7 +5069,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
> struct drm_connector *connector, *ot;
> struct drm_crtc *crtc, *ct;
> struct drm_encoder *encoder, *enct;
> - struct drm_bridge *bridge, *brt;
> struct drm_framebuffer *fb, *fbt;
> struct drm_property *property, *pt;
> struct drm_property_blob *blob, *bt;
> @@ -5139,11 +5079,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
> encoder->funcs->destroy(encoder);
> }
>
> - list_for_each_entry_safe(bridge, brt,
> - &dev->mode_config.bridge_list, head) {
> - bridge->funcs->destroy(bridge);
> - }
> -
> list_for_each_entry_safe(connector, ot,
> &dev->mode_config.connector_list, head) {
> connector->funcs->destroy(connector);
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
> index 9d00dcb..e4f249b 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
> @@ -65,6 +65,9 @@ void hdmi_destroy(struct kref *kref)
> if (hdmi->i2c)
> hdmi_i2c_destroy(hdmi->i2c);
>
> + if (hdmi->bridge)
> + hdmi_bridge_destroy(hdmi->bridge);
> +
> platform_set_drvdata(hdmi->pdev, NULL);
> }
>
> @@ -234,9 +237,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
>
> fail:
> if (hdmi) {
> - /* bridge/connector are normally destroyed by drm: */
> - if (hdmi->bridge)
> - hdmi->bridge->funcs->destroy(hdmi->bridge);
> + /* bridge is normally destroyed by drm: */
> if (hdmi->connector)
> hdmi->connector->funcs->destroy(hdmi->connector);
> hdmi_destroy(&hdmi->refcount);
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
> index b981995..d2cf7f4 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi.h
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
> @@ -163,6 +163,7 @@ void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
> */
>
> struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi);
> +void hdmi_bridge_destroy(struct drm_bridge *bridge);
>
> /*
> * hdmi connector:
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> index 0309539..26657a0 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> @@ -23,11 +23,11 @@ struct hdmi_bridge {
> };
> #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
>
> -static void hdmi_bridge_destroy(struct drm_bridge *bridge)
> +void hdmi_bridge_destroy(struct drm_bridge *bridge)
> {
> struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
> +
> hdmi_unreference(hdmi_bridge->hdmi);
> - drm_bridge_cleanup(bridge);
> kfree(hdmi_bridge);
> }
>
> @@ -201,7 +201,6 @@ static const struct drm_bridge_funcs hdmi_bridge_funcs = {
> .disable = hdmi_bridge_disable,
> .post_disable = hdmi_bridge_post_disable,
> .mode_set = hdmi_bridge_mode_set,
> - .destroy = hdmi_bridge_destroy,
> };
>
>
> @@ -223,7 +222,7 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
> bridge = &hdmi_bridge->base;
> bridge->funcs = &hdmi_bridge_funcs;
>
> - drm_bridge_init(hdmi->dev, bridge);
> + drm_bridge_attach(hdmi->dev, bridge);
>
> return bridge;
>
> diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
> index 6cf145d..a9bbb08 100644
> --- a/drivers/gpu/drm/sti/sti_hda.c
> +++ b/drivers/gpu/drm/sti/sti_hda.c
> @@ -508,19 +508,12 @@ static void sti_hda_bridge_nope(struct drm_bridge *bridge)
> /* do nothing */
> }
>
> -static void sti_hda_brigde_destroy(struct drm_bridge *bridge)
> -{
> - drm_bridge_cleanup(bridge);
> - kfree(bridge);
> -}
> -
> static const struct drm_bridge_funcs sti_hda_bridge_funcs = {
> .pre_enable = sti_hda_pre_enable,
> .enable = sti_hda_bridge_nope,
> .disable = sti_hda_disable,
> .post_disable = sti_hda_bridge_nope,
> .mode_set = sti_hda_set_mode,
> - .destroy = sti_hda_brigde_destroy,
> };
>
> static int sti_hda_connector_get_modes(struct drm_connector *connector)
> @@ -665,7 +658,7 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
>
> bridge->driver_private = hda;
> bridge->funcs = &sti_hda_bridge_funcs;
> - drm_bridge_init(drm_dev, bridge);
> + drm_bridge_attach(drm_dev, bridge);
>
> encoder->bridge = bridge;
> connector->encoder = encoder;
> @@ -694,7 +687,6 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
> err_sysfs:
> drm_connector_unregister(drm_connector);
> err_connector:
> - drm_bridge_cleanup(bridge);
> drm_connector_cleanup(drm_connector);
> return -EINVAL;
> }
> diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
> index 285f723..bf4cdb8 100644
> --- a/drivers/gpu/drm/sti/sti_hdmi.c
> +++ b/drivers/gpu/drm/sti/sti_hdmi.c
> @@ -463,19 +463,12 @@ static void sti_hdmi_bridge_nope(struct drm_bridge *bridge)
> /* do nothing */
> }
>
> -static void sti_hdmi_brigde_destroy(struct drm_bridge *bridge)
> -{
> - drm_bridge_cleanup(bridge);
> - kfree(bridge);
> -}
> -
> static const struct drm_bridge_funcs sti_hdmi_bridge_funcs = {
> .pre_enable = sti_hdmi_pre_enable,
> .enable = sti_hdmi_bridge_nope,
> .disable = sti_hdmi_disable,
> .post_disable = sti_hdmi_bridge_nope,
> .mode_set = sti_hdmi_set_mode,
> - .destroy = sti_hdmi_brigde_destroy,
> };
>
> static int sti_hdmi_connector_get_modes(struct drm_connector *connector)
> @@ -629,7 +622,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
>
> bridge->driver_private = hdmi;
> bridge->funcs = &sti_hdmi_bridge_funcs;
> - drm_bridge_init(drm_dev, bridge);
> + drm_bridge_attach(drm_dev, bridge);
>
> encoder->bridge = bridge;
> connector->encoder = encoder;
> @@ -661,7 +654,6 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
> err_sysfs:
> drm_connector_unregister(drm_connector);
> err_connector:
> - drm_bridge_cleanup(bridge);
> drm_connector_cleanup(drm_connector);
> return -EINVAL;
> }
> diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h
> index ff62344..b11f8e1 100644
> --- a/include/drm/bridge/ptn3460.h
> +++ b/include/drm/bridge/ptn3460.h
> @@ -15,6 +15,7 @@
> #define _DRM_BRIDGE_PTN3460_H_
>
> struct drm_device;
> +struct drm_bridge;
> struct drm_encoder;
> struct i2c_client;
> struct device_node;
> @@ -23,6 +24,9 @@ struct device_node;
>
> int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
> struct i2c_client *client, struct device_node *node);
> +
> +void ptn3460_destroy(struct drm_bridge *bridge);
> +
> #else
>
> static inline int ptn3460_init(struct drm_device *dev,
> @@ -32,6 +36,10 @@ static inline int ptn3460_init(struct drm_device *dev,
> return 0;
> }
>
> +static inline void ptn3460_destroy(struct drm_bridge *bridge)
> +{
> +}
> +
> #endif
>
> #endif
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index 5a3bce17..da2beaf 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -633,15 +633,16 @@ struct drm_plane {
>
> /**
> * drm_bridge_funcs - drm_bridge control functions
> + * @attach: Called during drm_bridge_attach
> * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
> * @disable: Called right before encoder prepare, disables the bridge
> * @post_disable: Called right after encoder prepare, for lockstepped disable
> * @mode_set: Set this mode to the bridge
> * @pre_enable: Called right before encoder commit, for lockstepped commit
> * @enable: Called right after encoder commit, enables the bridge
> - * @destroy: make object go away
> */
> struct drm_bridge_funcs {
> + int (*attach)(struct drm_bridge *bridge);
> bool (*mode_fixup)(struct drm_bridge *bridge,
> const struct drm_display_mode *mode,
> struct drm_display_mode *adjusted_mode);
> @@ -652,22 +653,24 @@ struct drm_bridge_funcs {
> struct drm_display_mode *adjusted_mode);
> void (*pre_enable)(struct drm_bridge *bridge);
> void (*enable)(struct drm_bridge *bridge);
> - void (*destroy)(struct drm_bridge *bridge);
> };
>
> /**
> * drm_bridge - central DRM bridge control structure
> * @dev: DRM device this bridge belongs to
> - * @head: list management
> + * @of_node: device node pointer to the bridge
> + * @list: to keep track of all added bridges
> * @base: base mode object
> * @funcs: control functions
> * @driver_private: pointer to the bridge driver's internal context
> */
> struct drm_bridge {
> struct drm_device *dev;
> - struct list_head head;
> -
> - struct drm_mode_object base;
> + struct drm_encoder *encoder;
> +#ifdef CONFIG_OF
> + struct device_node *of_node;
> +#endif
> + struct list_head list;
>
> const struct drm_bridge_funcs *funcs;
> void *driver_private;
> @@ -733,7 +736,6 @@ struct drm_mode_group {
> uint32_t num_crtcs;
> uint32_t num_encoders;
> uint32_t num_connectors;
> - uint32_t num_bridges;
>
> /* list of object IDs for this group */
> uint32_t *id_list;
> @@ -748,8 +750,6 @@ struct drm_mode_group {
> * @fb_list: list of framebuffers available
> * @num_connector: number of connectors on this device
> * @connector_list: list of connector objects
> - * @num_bridge: number of bridges on this device
> - * @bridge_list: list of bridge objects
> * @num_encoder: number of encoders on this device
> * @encoder_list: list of encoder objects
> * @num_crtc: number of CRTCs on this device
> @@ -789,8 +789,6 @@ struct drm_mode_config {
>
> int num_connector;
> struct list_head connector_list;
> - int num_bridge;
> - struct list_head bridge_list;
> int num_encoder;
> struct list_head encoder_list;
>
> @@ -912,8 +910,10 @@ extern unsigned int drm_connector_index(struct drm_connector *connector);
> /* helper to unplug all connectors from sysfs for device */
> extern void drm_connector_unplug_all(struct drm_device *dev);
>
> -extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge);
> -extern void drm_bridge_cleanup(struct drm_bridge *bridge);
> +extern int drm_bridge_add(struct drm_bridge *bridge);
> +extern void drm_bridge_remove(struct drm_bridge *bridge);
> +extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
>
> extern int drm_encoder_init(struct drm_device *dev,
> struct drm_encoder *encoder,
> --
> 1.7.9.5
>
^ permalink raw reply [flat|nested] 86+ messages in thread* [PATCH V8 03/14] drm/bridge: make bridge registration independent of drm flow
@ 2014-12-02 6:01 ` Ajay kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2014-12-02 6:01 UTC (permalink / raw)
To: linux-arm-kernel
On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> Currently, third party bridge drivers(ptn3460) are dependent
> on the corresponding encoder driver init, since bridge driver
> needs a drm_device pointer to finish drm initializations.
> The encoder driver passes the drm_device pointer to the
> bridge driver. Because of this dependency, third party drivers
> like ptn3460 doesn't adhere to the driver model.
>
> In this patch, we reframe the bridge registration framework
> so that bridge initialization is split into 2 steps, and
> bridge registration happens independent of drm flow:
> --Step 1: gather all the bridge settings independent of drm and
> add the bridge onto a global list of bridges.
> --Step 2: when the encoder driver is probed, call drm_bridge_attach
> for the corresponding bridge so that the bridge receives
> drm_device pointer and continues with connector and other
> drm initializations.
>
> The old set of bridge helpers are removed, and a set of new helpers
> are added to accomplish the 2 step initialization.
>
> The bridge devices register themselves onto global list of bridges
> when they get probed by calling "drm_bridge_add".
>
> The parent encoder driver waits till the bridge is available
> in the lookup table(by calling "of_drm_find_bridge") and then
> continues with its initialization.
>
> The encoder driver should also call "drm_bridge_attach" to pass
> on the drm_device to the bridge object.
>
> drm_bridge_attach inturn calls "bridge->funcs->attach" so that
> bridge can continue with drm related initializations.
>
> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
> ---
> drivers/gpu/drm/Makefile | 2 +-
> drivers/gpu/drm/bridge/ptn3460.c | 27 +++++-----
> drivers/gpu/drm/drm_bridge.c | 91 ++++++++++++++++++++++++++++++++
> drivers/gpu/drm/drm_crtc.c | 65 -----------------------
> drivers/gpu/drm/msm/hdmi/hdmi.c | 7 +--
> drivers/gpu/drm/msm/hdmi/hdmi.h | 1 +
> drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 7 ++-
> drivers/gpu/drm/sti/sti_hda.c | 10 +---
> drivers/gpu/drm/sti/sti_hdmi.c | 10 +---
> include/drm/bridge/ptn3460.h | 8 +++
> include/drm/drm_crtc.h | 26 ++++-----
> 11 files changed, 136 insertions(+), 118 deletions(-)
> create mode 100644 drivers/gpu/drm/drm_bridge.c
>
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index 9292a76..00f97a5 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
> drm_info.o drm_debugfs.o drm_encoder_slave.o \
> drm_trace_points.o drm_global.o drm_prime.o \
> drm_rect.o drm_vma_manager.o drm_flip_work.o \
> - drm_modeset_lock.o
> + drm_modeset_lock.o drm_bridge.o
>
> drm-$(CONFIG_COMPAT) += drm_ioc32.o
> drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
> diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
> index a2ddc8d..4a818c1 100644
> --- a/drivers/gpu/drm/bridge/ptn3460.c
> +++ b/drivers/gpu/drm/bridge/ptn3460.c
> @@ -176,24 +176,11 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
> {
> }
>
> -static void ptn3460_bridge_destroy(struct drm_bridge *bridge)
> -{
> - struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
> -
> - drm_bridge_cleanup(bridge);
> - 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);
> - /* Nothing else to free, we've got devm allocated memory */
> -}
> -
> static struct drm_bridge_funcs ptn3460_bridge_funcs = {
> .pre_enable = ptn3460_pre_enable,
> .enable = ptn3460_enable,
> .disable = ptn3460_disable,
> .post_disable = ptn3460_post_disable,
> - .destroy = ptn3460_bridge_destroy,
> };
>
> static int ptn3460_get_modes(struct drm_connector *connector)
> @@ -314,7 +301,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
> }
>
> ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
> - ret = drm_bridge_init(dev, &ptn_bridge->bridge);
> + ret = drm_bridge_attach(dev, &ptn_bridge->bridge);
> if (ret) {
> DRM_ERROR("Failed to initialize bridge with drm\n");
> goto err;
> @@ -343,3 +330,15 @@ err:
> return ret;
> }
> EXPORT_SYMBOL(ptn3460_init);
> +
> +void ptn3460_destroy(struct drm_bridge *bridge)
> +{
> + struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
> +
> + 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);
> + /* Nothing else to free, we've got devm allocated memory */
> +}
> +EXPORT_SYMBOL(ptn3460_destroy);
> diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
> new file mode 100644
> index 0000000..d1187e5
> --- /dev/null
> +++ b/drivers/gpu/drm/drm_bridge.c
> @@ -0,0 +1,91 @@
> +/*
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sub license,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the
> + * next paragraph) shall be included in all copies or substantial portions
> + * of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> + * DEALINGS IN THE SOFTWARE.
> + */
> +
> +#include <linux/err.h>
> +#include <linux/module.h>
> +
> +#include <drm/drm_crtc.h>
> +
> +#include "drm/drmP.h"
> +
> +static DEFINE_MUTEX(bridge_lock);
> +static LIST_HEAD(bridge_list);
> +
> +int drm_bridge_add(struct drm_bridge *bridge)
> +{
> + mutex_lock(&bridge_lock);
> + list_add_tail(&bridge->list, &bridge_list);
> + mutex_unlock(&bridge_lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_bridge_add);
> +
> +void drm_bridge_remove(struct drm_bridge *bridge)
> +{
> + mutex_lock(&bridge_lock);
> + list_del_init(&bridge->list);
> + mutex_unlock(&bridge_lock);
> +}
> +EXPORT_SYMBOL(drm_bridge_remove);
> +
> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge)
> +{
> + if (!dev || !bridge)
> + return -EINVAL;
> +
> + if (bridge->dev)
> + return -EBUSY;
> +
> + bridge->dev = dev;
> +
> + if (bridge->funcs->attach)
> + return bridge->funcs->attach(bridge);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_bridge_attach);
> +
> +#ifdef CONFIG_OF
> +struct drm_bridge *of_drm_find_bridge(struct device_node *np)
> +{
> + struct drm_bridge *bridge;
> +
> + mutex_lock(&bridge_lock);
> +
> + list_for_each_entry(bridge, &bridge_list, list) {
> + if (bridge->of_node == np) {
> + mutex_unlock(&bridge_lock);
> + return bridge;
> + }
> + }
> +
> + mutex_unlock(&bridge_lock);
> + return NULL;
> +}
> +EXPORT_SYMBOL(of_drm_find_bridge);
> +#endif
> +
> +MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");
> +MODULE_DESCRIPTION("DRM bridge infrastructure");
> +MODULE_LICENSE("GPL and additional rights");
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index 408c053..39d6100 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -1008,56 +1008,6 @@ void drm_connector_unplug_all(struct drm_device *dev)
> EXPORT_SYMBOL(drm_connector_unplug_all);
>
> /**
> - * drm_bridge_init - initialize a drm transcoder/bridge
> - * @dev: drm device
> - * @bridge: transcoder/bridge to set up
> - *
> - * Initialises a preallocated bridge. Bridges should be
> - * subclassed as part of driver connector objects.
> - *
> - * Returns:
> - * Zero on success, error code on failure.
> - */
> -int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge)
> -{
> - int ret;
> -
> - drm_modeset_lock_all(dev);
> -
> - ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
> - if (ret)
> - goto out;
> -
> - bridge->dev = dev;
> -
> - list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
> - dev->mode_config.num_bridge++;
> -
> - out:
> - drm_modeset_unlock_all(dev);
> - return ret;
> -}
> -EXPORT_SYMBOL(drm_bridge_init);
> -
> -/**
> - * drm_bridge_cleanup - cleans up an initialised bridge
> - * @bridge: bridge to cleanup
> - *
> - * Cleans up the bridge but doesn't free the object.
> - */
> -void drm_bridge_cleanup(struct drm_bridge *bridge)
> -{
> - struct drm_device *dev = bridge->dev;
> -
> - drm_modeset_lock_all(dev);
> - drm_mode_object_put(dev, &bridge->base);
> - list_del(&bridge->head);
> - dev->mode_config.num_bridge--;
> - drm_modeset_unlock_all(dev);
> -}
> -EXPORT_SYMBOL(drm_bridge_cleanup);
> -
> -/**
> * drm_encoder_init - Init a preallocated encoder
> * @dev: drm device
> * @encoder: the encoder to init
> @@ -1539,7 +1489,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
> total_objects += dev->mode_config.num_crtc;
> total_objects += dev->mode_config.num_connector;
> total_objects += dev->mode_config.num_encoder;
> - total_objects += dev->mode_config.num_bridge;
>
> group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
> if (!group->id_list)
> @@ -1548,7 +1497,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
> group->num_crtcs = 0;
> group->num_connectors = 0;
> group->num_encoders = 0;
> - group->num_bridges = 0;
> return 0;
> }
>
> @@ -1568,7 +1516,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
> struct drm_crtc *crtc;
> struct drm_encoder *encoder;
> struct drm_connector *connector;
> - struct drm_bridge *bridge;
> int ret;
>
> if ((ret = drm_mode_group_init(dev, group)))
> @@ -1585,11 +1532,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
> group->id_list[group->num_crtcs + group->num_encoders +
> group->num_connectors++] = connector->base.id;
>
> - list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
> - group->id_list[group->num_crtcs + group->num_encoders +
> - group->num_connectors + group->num_bridges++] =
> - bridge->base.id;
> -
> return 0;
> }
> EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
> @@ -5088,7 +5030,6 @@ void drm_mode_config_init(struct drm_device *dev)
> INIT_LIST_HEAD(&dev->mode_config.fb_list);
> INIT_LIST_HEAD(&dev->mode_config.crtc_list);
> INIT_LIST_HEAD(&dev->mode_config.connector_list);
> - INIT_LIST_HEAD(&dev->mode_config.bridge_list);
> INIT_LIST_HEAD(&dev->mode_config.encoder_list);
> INIT_LIST_HEAD(&dev->mode_config.property_list);
> INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
> @@ -5128,7 +5069,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
> struct drm_connector *connector, *ot;
> struct drm_crtc *crtc, *ct;
> struct drm_encoder *encoder, *enct;
> - struct drm_bridge *bridge, *brt;
> struct drm_framebuffer *fb, *fbt;
> struct drm_property *property, *pt;
> struct drm_property_blob *blob, *bt;
> @@ -5139,11 +5079,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
> encoder->funcs->destroy(encoder);
> }
>
> - list_for_each_entry_safe(bridge, brt,
> - &dev->mode_config.bridge_list, head) {
> - bridge->funcs->destroy(bridge);
> - }
> -
> list_for_each_entry_safe(connector, ot,
> &dev->mode_config.connector_list, head) {
> connector->funcs->destroy(connector);
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
> index 9d00dcb..e4f249b 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
> @@ -65,6 +65,9 @@ void hdmi_destroy(struct kref *kref)
> if (hdmi->i2c)
> hdmi_i2c_destroy(hdmi->i2c);
>
> + if (hdmi->bridge)
> + hdmi_bridge_destroy(hdmi->bridge);
> +
> platform_set_drvdata(hdmi->pdev, NULL);
> }
>
> @@ -234,9 +237,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
>
> fail:
> if (hdmi) {
> - /* bridge/connector are normally destroyed by drm: */
> - if (hdmi->bridge)
> - hdmi->bridge->funcs->destroy(hdmi->bridge);
> + /* bridge is normally destroyed by drm: */
> if (hdmi->connector)
> hdmi->connector->funcs->destroy(hdmi->connector);
> hdmi_destroy(&hdmi->refcount);
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
> index b981995..d2cf7f4 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi.h
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
> @@ -163,6 +163,7 @@ void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
> */
>
> struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi);
> +void hdmi_bridge_destroy(struct drm_bridge *bridge);
>
> /*
> * hdmi connector:
> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> index 0309539..26657a0 100644
> --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
> @@ -23,11 +23,11 @@ struct hdmi_bridge {
> };
> #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
>
> -static void hdmi_bridge_destroy(struct drm_bridge *bridge)
> +void hdmi_bridge_destroy(struct drm_bridge *bridge)
> {
> struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
> +
> hdmi_unreference(hdmi_bridge->hdmi);
> - drm_bridge_cleanup(bridge);
> kfree(hdmi_bridge);
> }
>
> @@ -201,7 +201,6 @@ static const struct drm_bridge_funcs hdmi_bridge_funcs = {
> .disable = hdmi_bridge_disable,
> .post_disable = hdmi_bridge_post_disable,
> .mode_set = hdmi_bridge_mode_set,
> - .destroy = hdmi_bridge_destroy,
> };
>
>
> @@ -223,7 +222,7 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
> bridge = &hdmi_bridge->base;
> bridge->funcs = &hdmi_bridge_funcs;
>
> - drm_bridge_init(hdmi->dev, bridge);
> + drm_bridge_attach(hdmi->dev, bridge);
>
> return bridge;
>
> diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
> index 6cf145d..a9bbb08 100644
> --- a/drivers/gpu/drm/sti/sti_hda.c
> +++ b/drivers/gpu/drm/sti/sti_hda.c
> @@ -508,19 +508,12 @@ static void sti_hda_bridge_nope(struct drm_bridge *bridge)
> /* do nothing */
> }
>
> -static void sti_hda_brigde_destroy(struct drm_bridge *bridge)
> -{
> - drm_bridge_cleanup(bridge);
> - kfree(bridge);
> -}
> -
> static const struct drm_bridge_funcs sti_hda_bridge_funcs = {
> .pre_enable = sti_hda_pre_enable,
> .enable = sti_hda_bridge_nope,
> .disable = sti_hda_disable,
> .post_disable = sti_hda_bridge_nope,
> .mode_set = sti_hda_set_mode,
> - .destroy = sti_hda_brigde_destroy,
> };
>
> static int sti_hda_connector_get_modes(struct drm_connector *connector)
> @@ -665,7 +658,7 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
>
> bridge->driver_private = hda;
> bridge->funcs = &sti_hda_bridge_funcs;
> - drm_bridge_init(drm_dev, bridge);
> + drm_bridge_attach(drm_dev, bridge);
>
> encoder->bridge = bridge;
> connector->encoder = encoder;
> @@ -694,7 +687,6 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
> err_sysfs:
> drm_connector_unregister(drm_connector);
> err_connector:
> - drm_bridge_cleanup(bridge);
> drm_connector_cleanup(drm_connector);
> return -EINVAL;
> }
> diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
> index 285f723..bf4cdb8 100644
> --- a/drivers/gpu/drm/sti/sti_hdmi.c
> +++ b/drivers/gpu/drm/sti/sti_hdmi.c
> @@ -463,19 +463,12 @@ static void sti_hdmi_bridge_nope(struct drm_bridge *bridge)
> /* do nothing */
> }
>
> -static void sti_hdmi_brigde_destroy(struct drm_bridge *bridge)
> -{
> - drm_bridge_cleanup(bridge);
> - kfree(bridge);
> -}
> -
> static const struct drm_bridge_funcs sti_hdmi_bridge_funcs = {
> .pre_enable = sti_hdmi_pre_enable,
> .enable = sti_hdmi_bridge_nope,
> .disable = sti_hdmi_disable,
> .post_disable = sti_hdmi_bridge_nope,
> .mode_set = sti_hdmi_set_mode,
> - .destroy = sti_hdmi_brigde_destroy,
> };
>
> static int sti_hdmi_connector_get_modes(struct drm_connector *connector)
> @@ -629,7 +622,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
>
> bridge->driver_private = hdmi;
> bridge->funcs = &sti_hdmi_bridge_funcs;
> - drm_bridge_init(drm_dev, bridge);
> + drm_bridge_attach(drm_dev, bridge);
>
> encoder->bridge = bridge;
> connector->encoder = encoder;
> @@ -661,7 +654,6 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
> err_sysfs:
> drm_connector_unregister(drm_connector);
> err_connector:
> - drm_bridge_cleanup(bridge);
> drm_connector_cleanup(drm_connector);
> return -EINVAL;
> }
> diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h
> index ff62344..b11f8e1 100644
> --- a/include/drm/bridge/ptn3460.h
> +++ b/include/drm/bridge/ptn3460.h
> @@ -15,6 +15,7 @@
> #define _DRM_BRIDGE_PTN3460_H_
>
> struct drm_device;
> +struct drm_bridge;
> struct drm_encoder;
> struct i2c_client;
> struct device_node;
> @@ -23,6 +24,9 @@ struct device_node;
>
> int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
> struct i2c_client *client, struct device_node *node);
> +
> +void ptn3460_destroy(struct drm_bridge *bridge);
> +
> #else
>
> static inline int ptn3460_init(struct drm_device *dev,
> @@ -32,6 +36,10 @@ static inline int ptn3460_init(struct drm_device *dev,
> return 0;
> }
>
> +static inline void ptn3460_destroy(struct drm_bridge *bridge)
> +{
> +}
> +
> #endif
>
> #endif
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index 5a3bce17..da2beaf 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -633,15 +633,16 @@ struct drm_plane {
>
> /**
> * drm_bridge_funcs - drm_bridge control functions
> + * @attach: Called during drm_bridge_attach
> * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
> * @disable: Called right before encoder prepare, disables the bridge
> * @post_disable: Called right after encoder prepare, for lockstepped disable
> * @mode_set: Set this mode to the bridge
> * @pre_enable: Called right before encoder commit, for lockstepped commit
> * @enable: Called right after encoder commit, enables the bridge
> - * @destroy: make object go away
> */
> struct drm_bridge_funcs {
> + int (*attach)(struct drm_bridge *bridge);
> bool (*mode_fixup)(struct drm_bridge *bridge,
> const struct drm_display_mode *mode,
> struct drm_display_mode *adjusted_mode);
> @@ -652,22 +653,24 @@ struct drm_bridge_funcs {
> struct drm_display_mode *adjusted_mode);
> void (*pre_enable)(struct drm_bridge *bridge);
> void (*enable)(struct drm_bridge *bridge);
> - void (*destroy)(struct drm_bridge *bridge);
> };
>
> /**
> * drm_bridge - central DRM bridge control structure
> * @dev: DRM device this bridge belongs to
> - * @head: list management
> + * @of_node: device node pointer to the bridge
> + * @list: to keep track of all added bridges
> * @base: base mode object
> * @funcs: control functions
> * @driver_private: pointer to the bridge driver's internal context
> */
> struct drm_bridge {
> struct drm_device *dev;
> - struct list_head head;
> -
> - struct drm_mode_object base;
> + struct drm_encoder *encoder;
> +#ifdef CONFIG_OF
> + struct device_node *of_node;
> +#endif
> + struct list_head list;
>
> const struct drm_bridge_funcs *funcs;
> void *driver_private;
> @@ -733,7 +736,6 @@ struct drm_mode_group {
> uint32_t num_crtcs;
> uint32_t num_encoders;
> uint32_t num_connectors;
> - uint32_t num_bridges;
>
> /* list of object IDs for this group */
> uint32_t *id_list;
> @@ -748,8 +750,6 @@ struct drm_mode_group {
> * @fb_list: list of framebuffers available
> * @num_connector: number of connectors on this device
> * @connector_list: list of connector objects
> - * @num_bridge: number of bridges on this device
> - * @bridge_list: list of bridge objects
> * @num_encoder: number of encoders on this device
> * @encoder_list: list of encoder objects
> * @num_crtc: number of CRTCs on this device
> @@ -789,8 +789,6 @@ struct drm_mode_config {
>
> int num_connector;
> struct list_head connector_list;
> - int num_bridge;
> - struct list_head bridge_list;
> int num_encoder;
> struct list_head encoder_list;
>
> @@ -912,8 +910,10 @@ extern unsigned int drm_connector_index(struct drm_connector *connector);
> /* helper to unplug all connectors from sysfs for device */
> extern void drm_connector_unplug_all(struct drm_device *dev);
>
> -extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge);
> -extern void drm_bridge_cleanup(struct drm_bridge *bridge);
> +extern int drm_bridge_add(struct drm_bridge *bridge);
> +extern void drm_bridge_remove(struct drm_bridge *bridge);
> +extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
>
> extern int drm_encoder_init(struct drm_device *dev,
> struct drm_encoder *encoder,
> --
> 1.7.9.5
>
^ permalink raw reply [flat|nested] 86+ messages in thread* Re: [PATCH V8 03/14] drm/bridge: make bridge registration independent of drm flow
2014-12-02 6:01 ` Ajay kumar
@ 2014-12-08 10:24 ` Ajay kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2014-12-08 10:24 UTC (permalink / raw)
To: Daniel Vetter
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
dri-devel, Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G,
Ajay Kumar, linux-arm-kernel
On Tue, Dec 2, 2014 at 11:31 AM, Ajay kumar <ajaynumb@gmail.com> wrote:
> On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> Currently, third party bridge drivers(ptn3460) are dependent
>> on the corresponding encoder driver init, since bridge driver
>> needs a drm_device pointer to finish drm initializations.
>> The encoder driver passes the drm_device pointer to the
>> bridge driver. Because of this dependency, third party drivers
>> like ptn3460 doesn't adhere to the driver model.
>>
>> In this patch, we reframe the bridge registration framework
>> so that bridge initialization is split into 2 steps, and
>> bridge registration happens independent of drm flow:
>> --Step 1: gather all the bridge settings independent of drm and
>> add the bridge onto a global list of bridges.
>> --Step 2: when the encoder driver is probed, call drm_bridge_attach
>> for the corresponding bridge so that the bridge receives
>> drm_device pointer and continues with connector and other
>> drm initializations.
>>
>> The old set of bridge helpers are removed, and a set of new helpers
>> are added to accomplish the 2 step initialization.
>>
>> The bridge devices register themselves onto global list of bridges
>> when they get probed by calling "drm_bridge_add".
>>
>> The parent encoder driver waits till the bridge is available
>> in the lookup table(by calling "of_drm_find_bridge") and then
>> continues with its initialization.
>>
>> The encoder driver should also call "drm_bridge_attach" to pass
>> on the drm_device to the bridge object.
>>
>> drm_bridge_attach inturn calls "bridge->funcs->attach" so that
>> bridge can continue with drm related initializations.
>>
>> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
>> ---
>> drivers/gpu/drm/Makefile | 2 +-
>> drivers/gpu/drm/bridge/ptn3460.c | 27 +++++-----
>> drivers/gpu/drm/drm_bridge.c | 91 ++++++++++++++++++++++++++++++++
>> drivers/gpu/drm/drm_crtc.c | 65 -----------------------
>> drivers/gpu/drm/msm/hdmi/hdmi.c | 7 +--
>> drivers/gpu/drm/msm/hdmi/hdmi.h | 1 +
>> drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 7 ++-
>> drivers/gpu/drm/sti/sti_hda.c | 10 +---
>> drivers/gpu/drm/sti/sti_hdmi.c | 10 +---
>> include/drm/bridge/ptn3460.h | 8 +++
>> include/drm/drm_crtc.h | 26 ++++-----
>> 11 files changed, 136 insertions(+), 118 deletions(-)
>> create mode 100644 drivers/gpu/drm/drm_bridge.c
>>
>> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
>> index 9292a76..00f97a5 100644
>> --- a/drivers/gpu/drm/Makefile
>> +++ b/drivers/gpu/drm/Makefile
>> @@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
>> drm_info.o drm_debugfs.o drm_encoder_slave.o \
>> drm_trace_points.o drm_global.o drm_prime.o \
>> drm_rect.o drm_vma_manager.o drm_flip_work.o \
>> - drm_modeset_lock.o
>> + drm_modeset_lock.o drm_bridge.o
>>
>> drm-$(CONFIG_COMPAT) += drm_ioc32.o
>> drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
>> diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
>> index a2ddc8d..4a818c1 100644
>> --- a/drivers/gpu/drm/bridge/ptn3460.c
>> +++ b/drivers/gpu/drm/bridge/ptn3460.c
>> @@ -176,24 +176,11 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
>> {
>> }
>>
>> -static void ptn3460_bridge_destroy(struct drm_bridge *bridge)
>> -{
>> - struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
>> -
>> - drm_bridge_cleanup(bridge);
>> - 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);
>> - /* Nothing else to free, we've got devm allocated memory */
>> -}
>> -
>> static struct drm_bridge_funcs ptn3460_bridge_funcs = {
>> .pre_enable = ptn3460_pre_enable,
>> .enable = ptn3460_enable,
>> .disable = ptn3460_disable,
>> .post_disable = ptn3460_post_disable,
>> - .destroy = ptn3460_bridge_destroy,
>> };
>>
>> static int ptn3460_get_modes(struct drm_connector *connector)
>> @@ -314,7 +301,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
>> }
>>
>> ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
>> - ret = drm_bridge_init(dev, &ptn_bridge->bridge);
>> + ret = drm_bridge_attach(dev, &ptn_bridge->bridge);
>> if (ret) {
>> DRM_ERROR("Failed to initialize bridge with drm\n");
>> goto err;
>> @@ -343,3 +330,15 @@ err:
>> return ret;
>> }
>> EXPORT_SYMBOL(ptn3460_init);
>> +
>> +void ptn3460_destroy(struct drm_bridge *bridge)
>> +{
>> + struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
>> +
>> + 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);
>> + /* Nothing else to free, we've got devm allocated memory */
>> +}
>> +EXPORT_SYMBOL(ptn3460_destroy);
>> diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
>> new file mode 100644
>> index 0000000..d1187e5
>> --- /dev/null
>> +++ b/drivers/gpu/drm/drm_bridge.c
>> @@ -0,0 +1,91 @@
>> +/*
>> + * Copyright (c) 2014 Samsung Electronics Co., Ltd
>> + *
>> + * Permission is hereby granted, free of charge, to any person obtaining a
>> + * copy of this software and associated documentation files (the "Software"),
>> + * to deal in the Software without restriction, including without limitation
>> + * the rights to use, copy, modify, merge, publish, distribute, sub license,
>> + * and/or sell copies of the Software, and to permit persons to whom the
>> + * Software is furnished to do so, subject to the following conditions:
>> + *
>> + * The above copyright notice and this permission notice (including the
>> + * next paragraph) shall be included in all copies or substantial portions
>> + * of the Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
>> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
>> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
>> + * DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +#include <linux/err.h>
>> +#include <linux/module.h>
>> +
>> +#include <drm/drm_crtc.h>
>> +
>> +#include "drm/drmP.h"
>> +
>> +static DEFINE_MUTEX(bridge_lock);
>> +static LIST_HEAD(bridge_list);
>> +
>> +int drm_bridge_add(struct drm_bridge *bridge)
>> +{
>> + mutex_lock(&bridge_lock);
>> + list_add_tail(&bridge->list, &bridge_list);
>> + mutex_unlock(&bridge_lock);
>> +
>> + return 0;
>> +}
>> +EXPORT_SYMBOL(drm_bridge_add);
>> +
>> +void drm_bridge_remove(struct drm_bridge *bridge)
>> +{
>> + mutex_lock(&bridge_lock);
>> + list_del_init(&bridge->list);
>> + mutex_unlock(&bridge_lock);
>> +}
>> +EXPORT_SYMBOL(drm_bridge_remove);
>> +
>> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge)
>> +{
>> + if (!dev || !bridge)
>> + return -EINVAL;
>> +
>> + if (bridge->dev)
>> + return -EBUSY;
>> +
>> + bridge->dev = dev;
>> +
>> + if (bridge->funcs->attach)
>> + return bridge->funcs->attach(bridge);
>> +
>> + return 0;
>> +}
>> +EXPORT_SYMBOL(drm_bridge_attach);
>> +
>> +#ifdef CONFIG_OF
>> +struct drm_bridge *of_drm_find_bridge(struct device_node *np)
>> +{
>> + struct drm_bridge *bridge;
>> +
>> + mutex_lock(&bridge_lock);
>> +
>> + list_for_each_entry(bridge, &bridge_list, list) {
>> + if (bridge->of_node == np) {
>> + mutex_unlock(&bridge_lock);
>> + return bridge;
>> + }
>> + }
>> +
>> + mutex_unlock(&bridge_lock);
>> + return NULL;
>> +}
>> +EXPORT_SYMBOL(of_drm_find_bridge);
>> +#endif
>> +
>> +MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");
>> +MODULE_DESCRIPTION("DRM bridge infrastructure");
>> +MODULE_LICENSE("GPL and additional rights");
>> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
>> index 408c053..39d6100 100644
>> --- a/drivers/gpu/drm/drm_crtc.c
>> +++ b/drivers/gpu/drm/drm_crtc.c
>> @@ -1008,56 +1008,6 @@ void drm_connector_unplug_all(struct drm_device *dev)
>> EXPORT_SYMBOL(drm_connector_unplug_all);
>>
>> /**
>> - * drm_bridge_init - initialize a drm transcoder/bridge
>> - * @dev: drm device
>> - * @bridge: transcoder/bridge to set up
>> - *
>> - * Initialises a preallocated bridge. Bridges should be
>> - * subclassed as part of driver connector objects.
>> - *
>> - * Returns:
>> - * Zero on success, error code on failure.
>> - */
>> -int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge)
>> -{
>> - int ret;
>> -
>> - drm_modeset_lock_all(dev);
>> -
>> - ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
>> - if (ret)
>> - goto out;
>> -
>> - bridge->dev = dev;
>> -
>> - list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
>> - dev->mode_config.num_bridge++;
>> -
>> - out:
>> - drm_modeset_unlock_all(dev);
>> - return ret;
>> -}
>> -EXPORT_SYMBOL(drm_bridge_init);
>> -
>> -/**
>> - * drm_bridge_cleanup - cleans up an initialised bridge
>> - * @bridge: bridge to cleanup
>> - *
>> - * Cleans up the bridge but doesn't free the object.
>> - */
>> -void drm_bridge_cleanup(struct drm_bridge *bridge)
>> -{
>> - struct drm_device *dev = bridge->dev;
>> -
>> - drm_modeset_lock_all(dev);
>> - drm_mode_object_put(dev, &bridge->base);
>> - list_del(&bridge->head);
>> - dev->mode_config.num_bridge--;
>> - drm_modeset_unlock_all(dev);
>> -}
>> -EXPORT_SYMBOL(drm_bridge_cleanup);
>> -
>> -/**
>> * drm_encoder_init - Init a preallocated encoder
>> * @dev: drm device
>> * @encoder: the encoder to init
>> @@ -1539,7 +1489,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
>> total_objects += dev->mode_config.num_crtc;
>> total_objects += dev->mode_config.num_connector;
>> total_objects += dev->mode_config.num_encoder;
>> - total_objects += dev->mode_config.num_bridge;
>>
>> group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
>> if (!group->id_list)
>> @@ -1548,7 +1497,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
>> group->num_crtcs = 0;
>> group->num_connectors = 0;
>> group->num_encoders = 0;
>> - group->num_bridges = 0;
>> return 0;
>> }
>>
>> @@ -1568,7 +1516,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
>> struct drm_crtc *crtc;
>> struct drm_encoder *encoder;
>> struct drm_connector *connector;
>> - struct drm_bridge *bridge;
>> int ret;
>>
>> if ((ret = drm_mode_group_init(dev, group)))
>> @@ -1585,11 +1532,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
>> group->id_list[group->num_crtcs + group->num_encoders +
>> group->num_connectors++] = connector->base.id;
>>
>> - list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
>> - group->id_list[group->num_crtcs + group->num_encoders +
>> - group->num_connectors + group->num_bridges++] =
>> - bridge->base.id;
>> -
>> return 0;
>> }
>> EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
>> @@ -5088,7 +5030,6 @@ void drm_mode_config_init(struct drm_device *dev)
>> INIT_LIST_HEAD(&dev->mode_config.fb_list);
>> INIT_LIST_HEAD(&dev->mode_config.crtc_list);
>> INIT_LIST_HEAD(&dev->mode_config.connector_list);
>> - INIT_LIST_HEAD(&dev->mode_config.bridge_list);
>> INIT_LIST_HEAD(&dev->mode_config.encoder_list);
>> INIT_LIST_HEAD(&dev->mode_config.property_list);
>> INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
>> @@ -5128,7 +5069,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
>> struct drm_connector *connector, *ot;
>> struct drm_crtc *crtc, *ct;
>> struct drm_encoder *encoder, *enct;
>> - struct drm_bridge *bridge, *brt;
>> struct drm_framebuffer *fb, *fbt;
>> struct drm_property *property, *pt;
>> struct drm_property_blob *blob, *bt;
>> @@ -5139,11 +5079,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
>> encoder->funcs->destroy(encoder);
>> }
>>
>> - list_for_each_entry_safe(bridge, brt,
>> - &dev->mode_config.bridge_list, head) {
>> - bridge->funcs->destroy(bridge);
>> - }
>> -
>> list_for_each_entry_safe(connector, ot,
>> &dev->mode_config.connector_list, head) {
>> connector->funcs->destroy(connector);
>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
>> index 9d00dcb..e4f249b 100644
>> --- a/drivers/gpu/drm/msm/hdmi/hdmi.c
>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
>> @@ -65,6 +65,9 @@ void hdmi_destroy(struct kref *kref)
>> if (hdmi->i2c)
>> hdmi_i2c_destroy(hdmi->i2c);
>>
>> + if (hdmi->bridge)
>> + hdmi_bridge_destroy(hdmi->bridge);
>> +
>> platform_set_drvdata(hdmi->pdev, NULL);
>> }
>>
>> @@ -234,9 +237,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
>>
>> fail:
>> if (hdmi) {
>> - /* bridge/connector are normally destroyed by drm: */
>> - if (hdmi->bridge)
>> - hdmi->bridge->funcs->destroy(hdmi->bridge);
>> + /* bridge is normally destroyed by drm: */
>> if (hdmi->connector)
>> hdmi->connector->funcs->destroy(hdmi->connector);
>> hdmi_destroy(&hdmi->refcount);
>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
>> index b981995..d2cf7f4 100644
>> --- a/drivers/gpu/drm/msm/hdmi/hdmi.h
>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
>> @@ -163,6 +163,7 @@ void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
>> */
>>
>> struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi);
>> +void hdmi_bridge_destroy(struct drm_bridge *bridge);
>>
>> /*
>> * hdmi connector:
>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
>> index 0309539..26657a0 100644
>> --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
>> @@ -23,11 +23,11 @@ struct hdmi_bridge {
>> };
>> #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
>>
>> -static void hdmi_bridge_destroy(struct drm_bridge *bridge)
>> +void hdmi_bridge_destroy(struct drm_bridge *bridge)
>> {
>> struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
>> +
>> hdmi_unreference(hdmi_bridge->hdmi);
>> - drm_bridge_cleanup(bridge);
>> kfree(hdmi_bridge);
>> }
>>
>> @@ -201,7 +201,6 @@ static const struct drm_bridge_funcs hdmi_bridge_funcs = {
>> .disable = hdmi_bridge_disable,
>> .post_disable = hdmi_bridge_post_disable,
>> .mode_set = hdmi_bridge_mode_set,
>> - .destroy = hdmi_bridge_destroy,
>> };
>>
>>
>> @@ -223,7 +222,7 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
>> bridge = &hdmi_bridge->base;
>> bridge->funcs = &hdmi_bridge_funcs;
>>
>> - drm_bridge_init(hdmi->dev, bridge);
>> + drm_bridge_attach(hdmi->dev, bridge);
>>
>> return bridge;
>>
>> diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
>> index 6cf145d..a9bbb08 100644
>> --- a/drivers/gpu/drm/sti/sti_hda.c
>> +++ b/drivers/gpu/drm/sti/sti_hda.c
>> @@ -508,19 +508,12 @@ static void sti_hda_bridge_nope(struct drm_bridge *bridge)
>> /* do nothing */
>> }
>>
>> -static void sti_hda_brigde_destroy(struct drm_bridge *bridge)
>> -{
>> - drm_bridge_cleanup(bridge);
>> - kfree(bridge);
>> -}
>> -
>> static const struct drm_bridge_funcs sti_hda_bridge_funcs = {
>> .pre_enable = sti_hda_pre_enable,
>> .enable = sti_hda_bridge_nope,
>> .disable = sti_hda_disable,
>> .post_disable = sti_hda_bridge_nope,
>> .mode_set = sti_hda_set_mode,
>> - .destroy = sti_hda_brigde_destroy,
>> };
>>
>> static int sti_hda_connector_get_modes(struct drm_connector *connector)
>> @@ -665,7 +658,7 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
>>
>> bridge->driver_private = hda;
>> bridge->funcs = &sti_hda_bridge_funcs;
>> - drm_bridge_init(drm_dev, bridge);
>> + drm_bridge_attach(drm_dev, bridge);
>>
>> encoder->bridge = bridge;
>> connector->encoder = encoder;
>> @@ -694,7 +687,6 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
>> err_sysfs:
>> drm_connector_unregister(drm_connector);
>> err_connector:
>> - drm_bridge_cleanup(bridge);
>> drm_connector_cleanup(drm_connector);
>> return -EINVAL;
>> }
>> diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
>> index 285f723..bf4cdb8 100644
>> --- a/drivers/gpu/drm/sti/sti_hdmi.c
>> +++ b/drivers/gpu/drm/sti/sti_hdmi.c
>> @@ -463,19 +463,12 @@ static void sti_hdmi_bridge_nope(struct drm_bridge *bridge)
>> /* do nothing */
>> }
>>
>> -static void sti_hdmi_brigde_destroy(struct drm_bridge *bridge)
>> -{
>> - drm_bridge_cleanup(bridge);
>> - kfree(bridge);
>> -}
>> -
>> static const struct drm_bridge_funcs sti_hdmi_bridge_funcs = {
>> .pre_enable = sti_hdmi_pre_enable,
>> .enable = sti_hdmi_bridge_nope,
>> .disable = sti_hdmi_disable,
>> .post_disable = sti_hdmi_bridge_nope,
>> .mode_set = sti_hdmi_set_mode,
>> - .destroy = sti_hdmi_brigde_destroy,
>> };
>>
>> static int sti_hdmi_connector_get_modes(struct drm_connector *connector)
>> @@ -629,7 +622,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
>>
>> bridge->driver_private = hdmi;
>> bridge->funcs = &sti_hdmi_bridge_funcs;
>> - drm_bridge_init(drm_dev, bridge);
>> + drm_bridge_attach(drm_dev, bridge);
>>
>> encoder->bridge = bridge;
>> connector->encoder = encoder;
>> @@ -661,7 +654,6 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
>> err_sysfs:
>> drm_connector_unregister(drm_connector);
>> err_connector:
>> - drm_bridge_cleanup(bridge);
>> drm_connector_cleanup(drm_connector);
>> return -EINVAL;
>> }
>> diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h
>> index ff62344..b11f8e1 100644
>> --- a/include/drm/bridge/ptn3460.h
>> +++ b/include/drm/bridge/ptn3460.h
>> @@ -15,6 +15,7 @@
>> #define _DRM_BRIDGE_PTN3460_H_
>>
>> struct drm_device;
>> +struct drm_bridge;
>> struct drm_encoder;
>> struct i2c_client;
>> struct device_node;
>> @@ -23,6 +24,9 @@ struct device_node;
>>
>> int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
>> struct i2c_client *client, struct device_node *node);
>> +
>> +void ptn3460_destroy(struct drm_bridge *bridge);
>> +
>> #else
>>
>> static inline int ptn3460_init(struct drm_device *dev,
>> @@ -32,6 +36,10 @@ static inline int ptn3460_init(struct drm_device *dev,
>> return 0;
>> }
>>
>> +static inline void ptn3460_destroy(struct drm_bridge *bridge)
>> +{
>> +}
>> +
>> #endif
>>
>> #endif
>> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
>> index 5a3bce17..da2beaf 100644
>> --- a/include/drm/drm_crtc.h
>> +++ b/include/drm/drm_crtc.h
>> @@ -633,15 +633,16 @@ struct drm_plane {
>>
>> /**
>> * drm_bridge_funcs - drm_bridge control functions
>> + * @attach: Called during drm_bridge_attach
>> * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
>> * @disable: Called right before encoder prepare, disables the bridge
>> * @post_disable: Called right after encoder prepare, for lockstepped disable
>> * @mode_set: Set this mode to the bridge
>> * @pre_enable: Called right before encoder commit, for lockstepped commit
>> * @enable: Called right after encoder commit, enables the bridge
>> - * @destroy: make object go away
>> */
>> struct drm_bridge_funcs {
>> + int (*attach)(struct drm_bridge *bridge);
>> bool (*mode_fixup)(struct drm_bridge *bridge,
>> const struct drm_display_mode *mode,
>> struct drm_display_mode *adjusted_mode);
>> @@ -652,22 +653,24 @@ struct drm_bridge_funcs {
>> struct drm_display_mode *adjusted_mode);
>> void (*pre_enable)(struct drm_bridge *bridge);
>> void (*enable)(struct drm_bridge *bridge);
>> - void (*destroy)(struct drm_bridge *bridge);
>> };
>>
>> /**
>> * drm_bridge - central DRM bridge control structure
>> * @dev: DRM device this bridge belongs to
>> - * @head: list management
>> + * @of_node: device node pointer to the bridge
>> + * @list: to keep track of all added bridges
>> * @base: base mode object
>> * @funcs: control functions
>> * @driver_private: pointer to the bridge driver's internal context
>> */
>> struct drm_bridge {
>> struct drm_device *dev;
>> - struct list_head head;
>> -
>> - struct drm_mode_object base;
>> + struct drm_encoder *encoder;
>> +#ifdef CONFIG_OF
>> + struct device_node *of_node;
>> +#endif
>> + struct list_head list;
>>
>> const struct drm_bridge_funcs *funcs;
>> void *driver_private;
>> @@ -733,7 +736,6 @@ struct drm_mode_group {
>> uint32_t num_crtcs;
>> uint32_t num_encoders;
>> uint32_t num_connectors;
>> - uint32_t num_bridges;
>>
>> /* list of object IDs for this group */
>> uint32_t *id_list;
>> @@ -748,8 +750,6 @@ struct drm_mode_group {
>> * @fb_list: list of framebuffers available
>> * @num_connector: number of connectors on this device
>> * @connector_list: list of connector objects
>> - * @num_bridge: number of bridges on this device
>> - * @bridge_list: list of bridge objects
>> * @num_encoder: number of encoders on this device
>> * @encoder_list: list of encoder objects
>> * @num_crtc: number of CRTCs on this device
>> @@ -789,8 +789,6 @@ struct drm_mode_config {
>>
>> int num_connector;
>> struct list_head connector_list;
>> - int num_bridge;
>> - struct list_head bridge_list;
>> int num_encoder;
>> struct list_head encoder_list;
>>
>> @@ -912,8 +910,10 @@ extern unsigned int drm_connector_index(struct drm_connector *connector);
>> /* helper to unplug all connectors from sysfs for device */
>> extern void drm_connector_unplug_all(struct drm_device *dev);
>>
>> -extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge);
>> -extern void drm_bridge_cleanup(struct drm_bridge *bridge);
>> +extern int drm_bridge_add(struct drm_bridge *bridge);
>> +extern void drm_bridge_remove(struct drm_bridge *bridge);
>> +extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
>> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
>>
>> extern int drm_encoder_init(struct drm_device *dev,
>> struct drm_encoder *encoder,
>> --
>> 1.7.9.5
>>
_______________________________________________
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^ permalink raw reply [flat|nested] 86+ messages in thread* [PATCH V8 03/14] drm/bridge: make bridge registration independent of drm flow
@ 2014-12-08 10:24 ` Ajay kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2014-12-08 10:24 UTC (permalink / raw)
To: linux-arm-kernel
On Tue, Dec 2, 2014 at 11:31 AM, Ajay kumar <ajaynumb@gmail.com> wrote:
> On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> Currently, third party bridge drivers(ptn3460) are dependent
>> on the corresponding encoder driver init, since bridge driver
>> needs a drm_device pointer to finish drm initializations.
>> The encoder driver passes the drm_device pointer to the
>> bridge driver. Because of this dependency, third party drivers
>> like ptn3460 doesn't adhere to the driver model.
>>
>> In this patch, we reframe the bridge registration framework
>> so that bridge initialization is split into 2 steps, and
>> bridge registration happens independent of drm flow:
>> --Step 1: gather all the bridge settings independent of drm and
>> add the bridge onto a global list of bridges.
>> --Step 2: when the encoder driver is probed, call drm_bridge_attach
>> for the corresponding bridge so that the bridge receives
>> drm_device pointer and continues with connector and other
>> drm initializations.
>>
>> The old set of bridge helpers are removed, and a set of new helpers
>> are added to accomplish the 2 step initialization.
>>
>> The bridge devices register themselves onto global list of bridges
>> when they get probed by calling "drm_bridge_add".
>>
>> The parent encoder driver waits till the bridge is available
>> in the lookup table(by calling "of_drm_find_bridge") and then
>> continues with its initialization.
>>
>> The encoder driver should also call "drm_bridge_attach" to pass
>> on the drm_device to the bridge object.
>>
>> drm_bridge_attach inturn calls "bridge->funcs->attach" so that
>> bridge can continue with drm related initializations.
>>
>> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
>> ---
>> drivers/gpu/drm/Makefile | 2 +-
>> drivers/gpu/drm/bridge/ptn3460.c | 27 +++++-----
>> drivers/gpu/drm/drm_bridge.c | 91 ++++++++++++++++++++++++++++++++
>> drivers/gpu/drm/drm_crtc.c | 65 -----------------------
>> drivers/gpu/drm/msm/hdmi/hdmi.c | 7 +--
>> drivers/gpu/drm/msm/hdmi/hdmi.h | 1 +
>> drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 7 ++-
>> drivers/gpu/drm/sti/sti_hda.c | 10 +---
>> drivers/gpu/drm/sti/sti_hdmi.c | 10 +---
>> include/drm/bridge/ptn3460.h | 8 +++
>> include/drm/drm_crtc.h | 26 ++++-----
>> 11 files changed, 136 insertions(+), 118 deletions(-)
>> create mode 100644 drivers/gpu/drm/drm_bridge.c
>>
>> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
>> index 9292a76..00f97a5 100644
>> --- a/drivers/gpu/drm/Makefile
>> +++ b/drivers/gpu/drm/Makefile
>> @@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
>> drm_info.o drm_debugfs.o drm_encoder_slave.o \
>> drm_trace_points.o drm_global.o drm_prime.o \
>> drm_rect.o drm_vma_manager.o drm_flip_work.o \
>> - drm_modeset_lock.o
>> + drm_modeset_lock.o drm_bridge.o
>>
>> drm-$(CONFIG_COMPAT) += drm_ioc32.o
>> drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
>> diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
>> index a2ddc8d..4a818c1 100644
>> --- a/drivers/gpu/drm/bridge/ptn3460.c
>> +++ b/drivers/gpu/drm/bridge/ptn3460.c
>> @@ -176,24 +176,11 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
>> {
>> }
>>
>> -static void ptn3460_bridge_destroy(struct drm_bridge *bridge)
>> -{
>> - struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
>> -
>> - drm_bridge_cleanup(bridge);
>> - 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);
>> - /* Nothing else to free, we've got devm allocated memory */
>> -}
>> -
>> static struct drm_bridge_funcs ptn3460_bridge_funcs = {
>> .pre_enable = ptn3460_pre_enable,
>> .enable = ptn3460_enable,
>> .disable = ptn3460_disable,
>> .post_disable = ptn3460_post_disable,
>> - .destroy = ptn3460_bridge_destroy,
>> };
>>
>> static int ptn3460_get_modes(struct drm_connector *connector)
>> @@ -314,7 +301,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
>> }
>>
>> ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
>> - ret = drm_bridge_init(dev, &ptn_bridge->bridge);
>> + ret = drm_bridge_attach(dev, &ptn_bridge->bridge);
>> if (ret) {
>> DRM_ERROR("Failed to initialize bridge with drm\n");
>> goto err;
>> @@ -343,3 +330,15 @@ err:
>> return ret;
>> }
>> EXPORT_SYMBOL(ptn3460_init);
>> +
>> +void ptn3460_destroy(struct drm_bridge *bridge)
>> +{
>> + struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
>> +
>> + 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);
>> + /* Nothing else to free, we've got devm allocated memory */
>> +}
>> +EXPORT_SYMBOL(ptn3460_destroy);
>> diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
>> new file mode 100644
>> index 0000000..d1187e5
>> --- /dev/null
>> +++ b/drivers/gpu/drm/drm_bridge.c
>> @@ -0,0 +1,91 @@
>> +/*
>> + * Copyright (c) 2014 Samsung Electronics Co., Ltd
>> + *
>> + * Permission is hereby granted, free of charge, to any person obtaining a
>> + * copy of this software and associated documentation files (the "Software"),
>> + * to deal in the Software without restriction, including without limitation
>> + * the rights to use, copy, modify, merge, publish, distribute, sub license,
>> + * and/or sell copies of the Software, and to permit persons to whom the
>> + * Software is furnished to do so, subject to the following conditions:
>> + *
>> + * The above copyright notice and this permission notice (including the
>> + * next paragraph) shall be included in all copies or substantial portions
>> + * of the Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
>> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
>> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
>> + * DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +#include <linux/err.h>
>> +#include <linux/module.h>
>> +
>> +#include <drm/drm_crtc.h>
>> +
>> +#include "drm/drmP.h"
>> +
>> +static DEFINE_MUTEX(bridge_lock);
>> +static LIST_HEAD(bridge_list);
>> +
>> +int drm_bridge_add(struct drm_bridge *bridge)
>> +{
>> + mutex_lock(&bridge_lock);
>> + list_add_tail(&bridge->list, &bridge_list);
>> + mutex_unlock(&bridge_lock);
>> +
>> + return 0;
>> +}
>> +EXPORT_SYMBOL(drm_bridge_add);
>> +
>> +void drm_bridge_remove(struct drm_bridge *bridge)
>> +{
>> + mutex_lock(&bridge_lock);
>> + list_del_init(&bridge->list);
>> + mutex_unlock(&bridge_lock);
>> +}
>> +EXPORT_SYMBOL(drm_bridge_remove);
>> +
>> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge)
>> +{
>> + if (!dev || !bridge)
>> + return -EINVAL;
>> +
>> + if (bridge->dev)
>> + return -EBUSY;
>> +
>> + bridge->dev = dev;
>> +
>> + if (bridge->funcs->attach)
>> + return bridge->funcs->attach(bridge);
>> +
>> + return 0;
>> +}
>> +EXPORT_SYMBOL(drm_bridge_attach);
>> +
>> +#ifdef CONFIG_OF
>> +struct drm_bridge *of_drm_find_bridge(struct device_node *np)
>> +{
>> + struct drm_bridge *bridge;
>> +
>> + mutex_lock(&bridge_lock);
>> +
>> + list_for_each_entry(bridge, &bridge_list, list) {
>> + if (bridge->of_node == np) {
>> + mutex_unlock(&bridge_lock);
>> + return bridge;
>> + }
>> + }
>> +
>> + mutex_unlock(&bridge_lock);
>> + return NULL;
>> +}
>> +EXPORT_SYMBOL(of_drm_find_bridge);
>> +#endif
>> +
>> +MODULE_AUTHOR("Ajay Kumar <ajaykumar.rs@samsung.com>");
>> +MODULE_DESCRIPTION("DRM bridge infrastructure");
>> +MODULE_LICENSE("GPL and additional rights");
>> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
>> index 408c053..39d6100 100644
>> --- a/drivers/gpu/drm/drm_crtc.c
>> +++ b/drivers/gpu/drm/drm_crtc.c
>> @@ -1008,56 +1008,6 @@ void drm_connector_unplug_all(struct drm_device *dev)
>> EXPORT_SYMBOL(drm_connector_unplug_all);
>>
>> /**
>> - * drm_bridge_init - initialize a drm transcoder/bridge
>> - * @dev: drm device
>> - * @bridge: transcoder/bridge to set up
>> - *
>> - * Initialises a preallocated bridge. Bridges should be
>> - * subclassed as part of driver connector objects.
>> - *
>> - * Returns:
>> - * Zero on success, error code on failure.
>> - */
>> -int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge)
>> -{
>> - int ret;
>> -
>> - drm_modeset_lock_all(dev);
>> -
>> - ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
>> - if (ret)
>> - goto out;
>> -
>> - bridge->dev = dev;
>> -
>> - list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
>> - dev->mode_config.num_bridge++;
>> -
>> - out:
>> - drm_modeset_unlock_all(dev);
>> - return ret;
>> -}
>> -EXPORT_SYMBOL(drm_bridge_init);
>> -
>> -/**
>> - * drm_bridge_cleanup - cleans up an initialised bridge
>> - * @bridge: bridge to cleanup
>> - *
>> - * Cleans up the bridge but doesn't free the object.
>> - */
>> -void drm_bridge_cleanup(struct drm_bridge *bridge)
>> -{
>> - struct drm_device *dev = bridge->dev;
>> -
>> - drm_modeset_lock_all(dev);
>> - drm_mode_object_put(dev, &bridge->base);
>> - list_del(&bridge->head);
>> - dev->mode_config.num_bridge--;
>> - drm_modeset_unlock_all(dev);
>> -}
>> -EXPORT_SYMBOL(drm_bridge_cleanup);
>> -
>> -/**
>> * drm_encoder_init - Init a preallocated encoder
>> * @dev: drm device
>> * @encoder: the encoder to init
>> @@ -1539,7 +1489,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
>> total_objects += dev->mode_config.num_crtc;
>> total_objects += dev->mode_config.num_connector;
>> total_objects += dev->mode_config.num_encoder;
>> - total_objects += dev->mode_config.num_bridge;
>>
>> group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
>> if (!group->id_list)
>> @@ -1548,7 +1497,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr
>> group->num_crtcs = 0;
>> group->num_connectors = 0;
>> group->num_encoders = 0;
>> - group->num_bridges = 0;
>> return 0;
>> }
>>
>> @@ -1568,7 +1516,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
>> struct drm_crtc *crtc;
>> struct drm_encoder *encoder;
>> struct drm_connector *connector;
>> - struct drm_bridge *bridge;
>> int ret;
>>
>> if ((ret = drm_mode_group_init(dev, group)))
>> @@ -1585,11 +1532,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev,
>> group->id_list[group->num_crtcs + group->num_encoders +
>> group->num_connectors++] = connector->base.id;
>>
>> - list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
>> - group->id_list[group->num_crtcs + group->num_encoders +
>> - group->num_connectors + group->num_bridges++] =
>> - bridge->base.id;
>> -
>> return 0;
>> }
>> EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
>> @@ -5088,7 +5030,6 @@ void drm_mode_config_init(struct drm_device *dev)
>> INIT_LIST_HEAD(&dev->mode_config.fb_list);
>> INIT_LIST_HEAD(&dev->mode_config.crtc_list);
>> INIT_LIST_HEAD(&dev->mode_config.connector_list);
>> - INIT_LIST_HEAD(&dev->mode_config.bridge_list);
>> INIT_LIST_HEAD(&dev->mode_config.encoder_list);
>> INIT_LIST_HEAD(&dev->mode_config.property_list);
>> INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
>> @@ -5128,7 +5069,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
>> struct drm_connector *connector, *ot;
>> struct drm_crtc *crtc, *ct;
>> struct drm_encoder *encoder, *enct;
>> - struct drm_bridge *bridge, *brt;
>> struct drm_framebuffer *fb, *fbt;
>> struct drm_property *property, *pt;
>> struct drm_property_blob *blob, *bt;
>> @@ -5139,11 +5079,6 @@ void drm_mode_config_cleanup(struct drm_device *dev)
>> encoder->funcs->destroy(encoder);
>> }
>>
>> - list_for_each_entry_safe(bridge, brt,
>> - &dev->mode_config.bridge_list, head) {
>> - bridge->funcs->destroy(bridge);
>> - }
>> -
>> list_for_each_entry_safe(connector, ot,
>> &dev->mode_config.connector_list, head) {
>> connector->funcs->destroy(connector);
>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
>> index 9d00dcb..e4f249b 100644
>> --- a/drivers/gpu/drm/msm/hdmi/hdmi.c
>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
>> @@ -65,6 +65,9 @@ void hdmi_destroy(struct kref *kref)
>> if (hdmi->i2c)
>> hdmi_i2c_destroy(hdmi->i2c);
>>
>> + if (hdmi->bridge)
>> + hdmi_bridge_destroy(hdmi->bridge);
>> +
>> platform_set_drvdata(hdmi->pdev, NULL);
>> }
>>
>> @@ -234,9 +237,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
>>
>> fail:
>> if (hdmi) {
>> - /* bridge/connector are normally destroyed by drm: */
>> - if (hdmi->bridge)
>> - hdmi->bridge->funcs->destroy(hdmi->bridge);
>> + /* bridge is normally destroyed by drm: */
>> if (hdmi->connector)
>> hdmi->connector->funcs->destroy(hdmi->connector);
>> hdmi_destroy(&hdmi->refcount);
>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
>> index b981995..d2cf7f4 100644
>> --- a/drivers/gpu/drm/msm/hdmi/hdmi.h
>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
>> @@ -163,6 +163,7 @@ void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
>> */
>>
>> struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi);
>> +void hdmi_bridge_destroy(struct drm_bridge *bridge);
>>
>> /*
>> * hdmi connector:
>> diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
>> index 0309539..26657a0 100644
>> --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
>> +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
>> @@ -23,11 +23,11 @@ struct hdmi_bridge {
>> };
>> #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
>>
>> -static void hdmi_bridge_destroy(struct drm_bridge *bridge)
>> +void hdmi_bridge_destroy(struct drm_bridge *bridge)
>> {
>> struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
>> +
>> hdmi_unreference(hdmi_bridge->hdmi);
>> - drm_bridge_cleanup(bridge);
>> kfree(hdmi_bridge);
>> }
>>
>> @@ -201,7 +201,6 @@ static const struct drm_bridge_funcs hdmi_bridge_funcs = {
>> .disable = hdmi_bridge_disable,
>> .post_disable = hdmi_bridge_post_disable,
>> .mode_set = hdmi_bridge_mode_set,
>> - .destroy = hdmi_bridge_destroy,
>> };
>>
>>
>> @@ -223,7 +222,7 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
>> bridge = &hdmi_bridge->base;
>> bridge->funcs = &hdmi_bridge_funcs;
>>
>> - drm_bridge_init(hdmi->dev, bridge);
>> + drm_bridge_attach(hdmi->dev, bridge);
>>
>> return bridge;
>>
>> diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
>> index 6cf145d..a9bbb08 100644
>> --- a/drivers/gpu/drm/sti/sti_hda.c
>> +++ b/drivers/gpu/drm/sti/sti_hda.c
>> @@ -508,19 +508,12 @@ static void sti_hda_bridge_nope(struct drm_bridge *bridge)
>> /* do nothing */
>> }
>>
>> -static void sti_hda_brigde_destroy(struct drm_bridge *bridge)
>> -{
>> - drm_bridge_cleanup(bridge);
>> - kfree(bridge);
>> -}
>> -
>> static const struct drm_bridge_funcs sti_hda_bridge_funcs = {
>> .pre_enable = sti_hda_pre_enable,
>> .enable = sti_hda_bridge_nope,
>> .disable = sti_hda_disable,
>> .post_disable = sti_hda_bridge_nope,
>> .mode_set = sti_hda_set_mode,
>> - .destroy = sti_hda_brigde_destroy,
>> };
>>
>> static int sti_hda_connector_get_modes(struct drm_connector *connector)
>> @@ -665,7 +658,7 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
>>
>> bridge->driver_private = hda;
>> bridge->funcs = &sti_hda_bridge_funcs;
>> - drm_bridge_init(drm_dev, bridge);
>> + drm_bridge_attach(drm_dev, bridge);
>>
>> encoder->bridge = bridge;
>> connector->encoder = encoder;
>> @@ -694,7 +687,6 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
>> err_sysfs:
>> drm_connector_unregister(drm_connector);
>> err_connector:
>> - drm_bridge_cleanup(bridge);
>> drm_connector_cleanup(drm_connector);
>> return -EINVAL;
>> }
>> diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
>> index 285f723..bf4cdb8 100644
>> --- a/drivers/gpu/drm/sti/sti_hdmi.c
>> +++ b/drivers/gpu/drm/sti/sti_hdmi.c
>> @@ -463,19 +463,12 @@ static void sti_hdmi_bridge_nope(struct drm_bridge *bridge)
>> /* do nothing */
>> }
>>
>> -static void sti_hdmi_brigde_destroy(struct drm_bridge *bridge)
>> -{
>> - drm_bridge_cleanup(bridge);
>> - kfree(bridge);
>> -}
>> -
>> static const struct drm_bridge_funcs sti_hdmi_bridge_funcs = {
>> .pre_enable = sti_hdmi_pre_enable,
>> .enable = sti_hdmi_bridge_nope,
>> .disable = sti_hdmi_disable,
>> .post_disable = sti_hdmi_bridge_nope,
>> .mode_set = sti_hdmi_set_mode,
>> - .destroy = sti_hdmi_brigde_destroy,
>> };
>>
>> static int sti_hdmi_connector_get_modes(struct drm_connector *connector)
>> @@ -629,7 +622,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
>>
>> bridge->driver_private = hdmi;
>> bridge->funcs = &sti_hdmi_bridge_funcs;
>> - drm_bridge_init(drm_dev, bridge);
>> + drm_bridge_attach(drm_dev, bridge);
>>
>> encoder->bridge = bridge;
>> connector->encoder = encoder;
>> @@ -661,7 +654,6 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data)
>> err_sysfs:
>> drm_connector_unregister(drm_connector);
>> err_connector:
>> - drm_bridge_cleanup(bridge);
>> drm_connector_cleanup(drm_connector);
>> return -EINVAL;
>> }
>> diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h
>> index ff62344..b11f8e1 100644
>> --- a/include/drm/bridge/ptn3460.h
>> +++ b/include/drm/bridge/ptn3460.h
>> @@ -15,6 +15,7 @@
>> #define _DRM_BRIDGE_PTN3460_H_
>>
>> struct drm_device;
>> +struct drm_bridge;
>> struct drm_encoder;
>> struct i2c_client;
>> struct device_node;
>> @@ -23,6 +24,9 @@ struct device_node;
>>
>> int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
>> struct i2c_client *client, struct device_node *node);
>> +
>> +void ptn3460_destroy(struct drm_bridge *bridge);
>> +
>> #else
>>
>> static inline int ptn3460_init(struct drm_device *dev,
>> @@ -32,6 +36,10 @@ static inline int ptn3460_init(struct drm_device *dev,
>> return 0;
>> }
>>
>> +static inline void ptn3460_destroy(struct drm_bridge *bridge)
>> +{
>> +}
>> +
>> #endif
>>
>> #endif
>> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
>> index 5a3bce17..da2beaf 100644
>> --- a/include/drm/drm_crtc.h
>> +++ b/include/drm/drm_crtc.h
>> @@ -633,15 +633,16 @@ struct drm_plane {
>>
>> /**
>> * drm_bridge_funcs - drm_bridge control functions
>> + * @attach: Called during drm_bridge_attach
>> * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
>> * @disable: Called right before encoder prepare, disables the bridge
>> * @post_disable: Called right after encoder prepare, for lockstepped disable
>> * @mode_set: Set this mode to the bridge
>> * @pre_enable: Called right before encoder commit, for lockstepped commit
>> * @enable: Called right after encoder commit, enables the bridge
>> - * @destroy: make object go away
>> */
>> struct drm_bridge_funcs {
>> + int (*attach)(struct drm_bridge *bridge);
>> bool (*mode_fixup)(struct drm_bridge *bridge,
>> const struct drm_display_mode *mode,
>> struct drm_display_mode *adjusted_mode);
>> @@ -652,22 +653,24 @@ struct drm_bridge_funcs {
>> struct drm_display_mode *adjusted_mode);
>> void (*pre_enable)(struct drm_bridge *bridge);
>> void (*enable)(struct drm_bridge *bridge);
>> - void (*destroy)(struct drm_bridge *bridge);
>> };
>>
>> /**
>> * drm_bridge - central DRM bridge control structure
>> * @dev: DRM device this bridge belongs to
>> - * @head: list management
>> + * @of_node: device node pointer to the bridge
>> + * @list: to keep track of all added bridges
>> * @base: base mode object
>> * @funcs: control functions
>> * @driver_private: pointer to the bridge driver's internal context
>> */
>> struct drm_bridge {
>> struct drm_device *dev;
>> - struct list_head head;
>> -
>> - struct drm_mode_object base;
>> + struct drm_encoder *encoder;
>> +#ifdef CONFIG_OF
>> + struct device_node *of_node;
>> +#endif
>> + struct list_head list;
>>
>> const struct drm_bridge_funcs *funcs;
>> void *driver_private;
>> @@ -733,7 +736,6 @@ struct drm_mode_group {
>> uint32_t num_crtcs;
>> uint32_t num_encoders;
>> uint32_t num_connectors;
>> - uint32_t num_bridges;
>>
>> /* list of object IDs for this group */
>> uint32_t *id_list;
>> @@ -748,8 +750,6 @@ struct drm_mode_group {
>> * @fb_list: list of framebuffers available
>> * @num_connector: number of connectors on this device
>> * @connector_list: list of connector objects
>> - * @num_bridge: number of bridges on this device
>> - * @bridge_list: list of bridge objects
>> * @num_encoder: number of encoders on this device
>> * @encoder_list: list of encoder objects
>> * @num_crtc: number of CRTCs on this device
>> @@ -789,8 +789,6 @@ struct drm_mode_config {
>>
>> int num_connector;
>> struct list_head connector_list;
>> - int num_bridge;
>> - struct list_head bridge_list;
>> int num_encoder;
>> struct list_head encoder_list;
>>
>> @@ -912,8 +910,10 @@ extern unsigned int drm_connector_index(struct drm_connector *connector);
>> /* helper to unplug all connectors from sysfs for device */
>> extern void drm_connector_unplug_all(struct drm_device *dev);
>>
>> -extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge);
>> -extern void drm_bridge_cleanup(struct drm_bridge *bridge);
>> +extern int drm_bridge_add(struct drm_bridge *bridge);
>> +extern void drm_bridge_remove(struct drm_bridge *bridge);
>> +extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
>> +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
>>
>> extern int drm_encoder_init(struct drm_device *dev,
>> struct drm_encoder *encoder,
>> --
>> 1.7.9.5
>>
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 04/14] drm/bridge: ptn3460: Convert to i2c driver model
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:54 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:54 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Use drm_bridge helpers to modify the driver to support
i2c driver model.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/Kconfig | 2 +
drivers/gpu/drm/bridge/ptn3460.c | 124 +++++++++++++++++++++----------
drivers/gpu/drm/exynos/exynos_dp_core.c | 22 ------
3 files changed, 86 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 884923f..4254c2b 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -1,5 +1,7 @@
config DRM_PTN3460
tristate "PTN3460 DP/LVDS bridge"
depends on DRM
+ depends on OF && I2C
select DRM_KMS_HELPER
---help---
+ ptn3460 eDP-LVDS bridge chip driver.
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index 4a818c1..7adeb60 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -36,7 +36,6 @@
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;
@@ -176,13 +175,6 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
{
}
-static struct drm_bridge_funcs ptn3460_bridge_funcs = {
- .pre_enable = ptn3460_pre_enable,
- .enable = ptn3460_enable,
- .disable = ptn3460_disable,
- .post_disable = ptn3460_post_disable,
-};
-
static int ptn3460_get_modes(struct drm_connector *connector)
{
struct ptn3460_bridge *ptn_bridge;
@@ -227,7 +219,7 @@ static struct drm_encoder *ptn3460_best_encoder(struct drm_connector *connector)
{
struct ptn3460_bridge *ptn_bridge = connector_to_ptn3460(connector);
- return ptn_bridge->encoder;
+ return ptn_bridge->bridge.encoder;
}
static struct drm_connector_helper_funcs ptn3460_connector_helper_funcs = {
@@ -253,31 +245,66 @@ static struct drm_connector_funcs ptn3460_connector_funcs = {
.destroy = ptn3460_connector_destroy,
};
-int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
- struct i2c_client *client, struct device_node *node)
+int ptn3460_bridge_attach(struct drm_bridge *bridge)
{
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
int ret;
+
+ if (!bridge->encoder) {
+ DRM_ERROR("Parent encoder object not found");
+ return -ENODEV;
+ }
+
+ ret = drm_connector_init(bridge->dev, &ptn_bridge->connector,
+ &ptn3460_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
+ if (ret) {
+ DRM_ERROR("Failed to initialize connector with drm\n");
+ return ret;
+ }
+ drm_connector_helper_add(&ptn_bridge->connector,
+ &ptn3460_connector_helper_funcs);
+ drm_connector_register(&ptn_bridge->connector);
+ drm_mode_connector_attach_encoder(&ptn_bridge->connector,
+ bridge->encoder);
+
+ return ret;
+}
+
+static struct drm_bridge_funcs ptn3460_bridge_funcs = {
+ .pre_enable = ptn3460_pre_enable,
+ .enable = ptn3460_enable,
+ .disable = ptn3460_disable,
+ .post_disable = ptn3460_post_disable,
+ .attach = ptn3460_bridge_attach,
+};
+
+static int ptn3460_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
struct ptn3460_bridge *ptn_bridge;
+ int ret;
- ptn_bridge = devm_kzalloc(dev->dev, sizeof(*ptn_bridge), GFP_KERNEL);
+ ptn_bridge = devm_kzalloc(dev, sizeof(*ptn_bridge), GFP_KERNEL);
if (!ptn_bridge) {
return -ENOMEM;
}
ptn_bridge->client = client;
- ptn_bridge->encoder = encoder;
- ptn_bridge->gpio_pd_n = of_get_named_gpio(node, "powerdown-gpio", 0);
+ ptn_bridge->gpio_pd_n = of_get_named_gpio(dev->of_node,
+ "powerdown-gpio", 0);
if (gpio_is_valid(ptn_bridge->gpio_pd_n)) {
ret = gpio_request_one(ptn_bridge->gpio_pd_n,
GPIOF_OUT_INIT_HIGH, "PTN3460_PD_N");
if (ret) {
- dev_err(&client->dev,
- "Request powerdown-gpio failed (%d)\n", ret);
+ dev_err(dev, "Request powerdown-gpio failed (%d)\n",
+ ret);
return ret;
}
}
- ptn_bridge->gpio_rst_n = of_get_named_gpio(node, "reset-gpio", 0);
+ ptn_bridge->gpio_rst_n = of_get_named_gpio(dev->of_node,
+ "reset-gpio", 0);
if (gpio_is_valid(ptn_bridge->gpio_rst_n)) {
/*
* Request the reset pin low to avoid the bridge being
@@ -286,39 +313,27 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
ret = gpio_request_one(ptn_bridge->gpio_rst_n,
GPIOF_OUT_INIT_LOW, "PTN3460_RST_N");
if (ret) {
- dev_err(&client->dev,
- "Request reset-gpio failed (%d)\n", ret);
+ dev_err(dev, "Request reset-gpio failed (%d)\n", ret);
gpio_free(ptn_bridge->gpio_pd_n);
return ret;
}
}
- ret = of_property_read_u32(node, "edid-emulation",
+ ret = of_property_read_u32(dev->of_node, "edid-emulation",
&ptn_bridge->edid_emulation);
if (ret) {
- dev_err(&client->dev, "Can't read EDID emulation value\n");
+ dev_err(dev, "Can't read EDID emulation value\n");
goto err;
}
ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
- ret = drm_bridge_attach(dev, &ptn_bridge->bridge);
+ ret = drm_bridge_add(&ptn_bridge->bridge);
if (ret) {
- DRM_ERROR("Failed to initialize bridge with drm\n");
+ DRM_ERROR("Failed to add bridge\n");
goto err;
}
- encoder->bridge = &ptn_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_connector_register(&ptn_bridge->connector);
- drm_mode_connector_attach_encoder(&ptn_bridge->connector, encoder);
+ i2c_set_clientdata(client, ptn_bridge);
return 0;
@@ -329,16 +344,45 @@ err:
gpio_free(ptn_bridge->gpio_rst_n);
return ret;
}
-EXPORT_SYMBOL(ptn3460_init);
-void ptn3460_destroy(struct drm_bridge *bridge)
+static int ptn3460_remove(struct i2c_client *client)
{
- struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+ struct ptn3460_bridge *ptn_bridge = i2c_get_clientdata(client);
+
+ drm_bridge_remove(&ptn_bridge->bridge);
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);
- /* Nothing else to free, we've got devm allocated memory */
+
+ return 0;
}
-EXPORT_SYMBOL(ptn3460_destroy);
+
+static const struct i2c_device_id ptn3460_i2c_table[] = {
+ {"nxp,ptn3460", 0},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, ptn3460_i2c_table);
+
+static const struct of_device_id ptn3460_match[] = {
+ { .compatible = "nxp,ptn3460" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ptn3460_match);
+
+static struct i2c_driver ptn3460_driver = {
+ .id_table = ptn3460_i2c_table,
+ .probe = ptn3460_probe,
+ .remove = ptn3460_remove,
+ .driver = {
+ .name = "nxp,ptn3460",
+ .owner = THIS_MODULE,
+ .of_match_table = ptn3460_match,
+ },
+};
+module_i2c_driver(ptn3460_driver);
+
+MODULE_AUTHOR("Sean Paul <seanpaul@chromium.org>");
+MODULE_DESCRIPTION("NXP ptn3460 eDP-LVDS converter driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 6adb1e5..5025b70 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -988,32 +988,10 @@ static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
.best_encoder = exynos_dp_best_encoder,
};
-static bool find_bridge(const char *compat, struct bridge_init *bridge)
-{
- bridge->client = NULL;
- bridge->node = of_find_compatible_node(NULL, NULL, compat);
- if (!bridge->node)
- return false;
-
- bridge->client = of_find_i2c_device_by_node(bridge->node);
- if (!bridge->client)
- return false;
-
- return true;
-}
-
/* returns the number of bridges attached */
static int exynos_drm_attach_lcd_bridge(struct drm_device *dev,
struct drm_encoder *encoder)
{
- struct bridge_init bridge;
- int ret;
-
- if (find_bridge("nxp,ptn3460", &bridge)) {
- ret = ptn3460_init(dev, encoder, bridge.client, bridge.node);
- if (!ret)
- return 1;
- }
return 0;
}
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 04/14] drm/bridge: ptn3460: Convert to i2c driver model
@ 2014-11-15 9:54 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:54 UTC (permalink / raw)
To: linux-arm-kernel
Use drm_bridge helpers to modify the driver to support
i2c driver model.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/Kconfig | 2 +
drivers/gpu/drm/bridge/ptn3460.c | 124 +++++++++++++++++++++----------
drivers/gpu/drm/exynos/exynos_dp_core.c | 22 ------
3 files changed, 86 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 884923f..4254c2b 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -1,5 +1,7 @@
config DRM_PTN3460
tristate "PTN3460 DP/LVDS bridge"
depends on DRM
+ depends on OF && I2C
select DRM_KMS_HELPER
---help---
+ ptn3460 eDP-LVDS bridge chip driver.
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index 4a818c1..7adeb60 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -36,7 +36,6 @@
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;
@@ -176,13 +175,6 @@ static void ptn3460_post_disable(struct drm_bridge *bridge)
{
}
-static struct drm_bridge_funcs ptn3460_bridge_funcs = {
- .pre_enable = ptn3460_pre_enable,
- .enable = ptn3460_enable,
- .disable = ptn3460_disable,
- .post_disable = ptn3460_post_disable,
-};
-
static int ptn3460_get_modes(struct drm_connector *connector)
{
struct ptn3460_bridge *ptn_bridge;
@@ -227,7 +219,7 @@ static struct drm_encoder *ptn3460_best_encoder(struct drm_connector *connector)
{
struct ptn3460_bridge *ptn_bridge = connector_to_ptn3460(connector);
- return ptn_bridge->encoder;
+ return ptn_bridge->bridge.encoder;
}
static struct drm_connector_helper_funcs ptn3460_connector_helper_funcs = {
@@ -253,31 +245,66 @@ static struct drm_connector_funcs ptn3460_connector_funcs = {
.destroy = ptn3460_connector_destroy,
};
-int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
- struct i2c_client *client, struct device_node *node)
+int ptn3460_bridge_attach(struct drm_bridge *bridge)
{
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
int ret;
+
+ if (!bridge->encoder) {
+ DRM_ERROR("Parent encoder object not found");
+ return -ENODEV;
+ }
+
+ ret = drm_connector_init(bridge->dev, &ptn_bridge->connector,
+ &ptn3460_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
+ if (ret) {
+ DRM_ERROR("Failed to initialize connector with drm\n");
+ return ret;
+ }
+ drm_connector_helper_add(&ptn_bridge->connector,
+ &ptn3460_connector_helper_funcs);
+ drm_connector_register(&ptn_bridge->connector);
+ drm_mode_connector_attach_encoder(&ptn_bridge->connector,
+ bridge->encoder);
+
+ return ret;
+}
+
+static struct drm_bridge_funcs ptn3460_bridge_funcs = {
+ .pre_enable = ptn3460_pre_enable,
+ .enable = ptn3460_enable,
+ .disable = ptn3460_disable,
+ .post_disable = ptn3460_post_disable,
+ .attach = ptn3460_bridge_attach,
+};
+
+static int ptn3460_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
struct ptn3460_bridge *ptn_bridge;
+ int ret;
- ptn_bridge = devm_kzalloc(dev->dev, sizeof(*ptn_bridge), GFP_KERNEL);
+ ptn_bridge = devm_kzalloc(dev, sizeof(*ptn_bridge), GFP_KERNEL);
if (!ptn_bridge) {
return -ENOMEM;
}
ptn_bridge->client = client;
- ptn_bridge->encoder = encoder;
- ptn_bridge->gpio_pd_n = of_get_named_gpio(node, "powerdown-gpio", 0);
+ ptn_bridge->gpio_pd_n = of_get_named_gpio(dev->of_node,
+ "powerdown-gpio", 0);
if (gpio_is_valid(ptn_bridge->gpio_pd_n)) {
ret = gpio_request_one(ptn_bridge->gpio_pd_n,
GPIOF_OUT_INIT_HIGH, "PTN3460_PD_N");
if (ret) {
- dev_err(&client->dev,
- "Request powerdown-gpio failed (%d)\n", ret);
+ dev_err(dev, "Request powerdown-gpio failed (%d)\n",
+ ret);
return ret;
}
}
- ptn_bridge->gpio_rst_n = of_get_named_gpio(node, "reset-gpio", 0);
+ ptn_bridge->gpio_rst_n = of_get_named_gpio(dev->of_node,
+ "reset-gpio", 0);
if (gpio_is_valid(ptn_bridge->gpio_rst_n)) {
/*
* Request the reset pin low to avoid the bridge being
@@ -286,39 +313,27 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder,
ret = gpio_request_one(ptn_bridge->gpio_rst_n,
GPIOF_OUT_INIT_LOW, "PTN3460_RST_N");
if (ret) {
- dev_err(&client->dev,
- "Request reset-gpio failed (%d)\n", ret);
+ dev_err(dev, "Request reset-gpio failed (%d)\n", ret);
gpio_free(ptn_bridge->gpio_pd_n);
return ret;
}
}
- ret = of_property_read_u32(node, "edid-emulation",
+ ret = of_property_read_u32(dev->of_node, "edid-emulation",
&ptn_bridge->edid_emulation);
if (ret) {
- dev_err(&client->dev, "Can't read EDID emulation value\n");
+ dev_err(dev, "Can't read EDID emulation value\n");
goto err;
}
ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
- ret = drm_bridge_attach(dev, &ptn_bridge->bridge);
+ ret = drm_bridge_add(&ptn_bridge->bridge);
if (ret) {
- DRM_ERROR("Failed to initialize bridge with drm\n");
+ DRM_ERROR("Failed to add bridge\n");
goto err;
}
- encoder->bridge = &ptn_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_connector_register(&ptn_bridge->connector);
- drm_mode_connector_attach_encoder(&ptn_bridge->connector, encoder);
+ i2c_set_clientdata(client, ptn_bridge);
return 0;
@@ -329,16 +344,45 @@ err:
gpio_free(ptn_bridge->gpio_rst_n);
return ret;
}
-EXPORT_SYMBOL(ptn3460_init);
-void ptn3460_destroy(struct drm_bridge *bridge)
+static int ptn3460_remove(struct i2c_client *client)
{
- struct ptn3460_bridge *ptn_bridge = bridge->driver_private;
+ struct ptn3460_bridge *ptn_bridge = i2c_get_clientdata(client);
+
+ drm_bridge_remove(&ptn_bridge->bridge);
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);
- /* Nothing else to free, we've got devm allocated memory */
+
+ return 0;
}
-EXPORT_SYMBOL(ptn3460_destroy);
+
+static const struct i2c_device_id ptn3460_i2c_table[] = {
+ {"nxp,ptn3460", 0},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, ptn3460_i2c_table);
+
+static const struct of_device_id ptn3460_match[] = {
+ { .compatible = "nxp,ptn3460" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ptn3460_match);
+
+static struct i2c_driver ptn3460_driver = {
+ .id_table = ptn3460_i2c_table,
+ .probe = ptn3460_probe,
+ .remove = ptn3460_remove,
+ .driver = {
+ .name = "nxp,ptn3460",
+ .owner = THIS_MODULE,
+ .of_match_table = ptn3460_match,
+ },
+};
+module_i2c_driver(ptn3460_driver);
+
+MODULE_AUTHOR("Sean Paul <seanpaul@chromium.org>");
+MODULE_DESCRIPTION("NXP ptn3460 eDP-LVDS converter driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 6adb1e5..5025b70 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -988,32 +988,10 @@ static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
.best_encoder = exynos_dp_best_encoder,
};
-static bool find_bridge(const char *compat, struct bridge_init *bridge)
-{
- bridge->client = NULL;
- bridge->node = of_find_compatible_node(NULL, NULL, compat);
- if (!bridge->node)
- return false;
-
- bridge->client = of_find_i2c_device_by_node(bridge->node);
- if (!bridge->client)
- return false;
-
- return true;
-}
-
/* returns the number of bridges attached */
static int exynos_drm_attach_lcd_bridge(struct drm_device *dev,
struct drm_encoder *encoder)
{
- struct bridge_init bridge;
- int ret;
-
- if (find_bridge("nxp,ptn3460", &bridge)) {
- ret = ptn3460_init(dev, encoder, bridge.client, bridge.node);
- if (!ret)
- return 1;
- }
return 0;
}
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 05/14] drm/exynos: dp: support drm_bridge
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Modify driver to support drm_bridge.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/video/exynos_dp.txt | 12 +++++++
drivers/gpu/drm/exynos/exynos_dp_core.c | 37 ++++++++++++++++----
drivers/gpu/drm/exynos/exynos_dp_core.h | 1 +
3 files changed, 44 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/video/exynos_dp.txt b/Documentation/devicetree/bindings/video/exynos_dp.txt
index 53dbccf..7a3a9cd 100644
--- a/Documentation/devicetree/bindings/video/exynos_dp.txt
+++ b/Documentation/devicetree/bindings/video/exynos_dp.txt
@@ -66,6 +66,10 @@ Optional properties for dp-controller:
Hotplug detect GPIO.
Indicates which GPIO should be used for hotplug
detection
+ -video interfaces: Device node can contain video interface port
+ nodes according to [1].
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
Example:
@@ -105,4 +109,12 @@ Board Specific portion:
vsync-len = <6>;
};
};
+
+ ports {
+ port@0 {
+ dp_out: endpoint {
+ remote-endpoint = <&bridge_in>;
+ };
+ };
+ };
};
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 5025b70..d30c748 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -18,6 +18,7 @@
#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
+#include <linux/of_graph.h>
#include <linux/gpio.h>
#include <linux/component.h>
#include <linux/phy/phy.h>
@@ -989,9 +990,19 @@ static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
};
/* 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)
{
+ int ret;
+
+ encoder->bridge = dp->bridge;
+ dp->bridge->encoder = encoder;
+ ret = drm_bridge_attach(encoder->dev, dp->bridge);
+ if (ret) {
+ DRM_ERROR("Failed to attach bridge to drm\n");
+ return ret;
+ }
+
return 0;
}
@@ -1005,9 +1016,11 @@ 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);
- if (ret)
- return 0;
+ if (dp->bridge) {
+ ret = exynos_drm_attach_lcd_bridge(dp, encoder);
+ if (!ret)
+ return 0;
+ }
connector->polled = DRM_CONNECTOR_POLL_HPD;
@@ -1259,7 +1272,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
if (ret)
return ret;
- if (!dp->panel) {
+ if (!dp->panel && !dp->bridge) {
ret = exynos_dp_dt_parse_panel(dp);
if (ret)
return ret;
@@ -1345,7 +1358,7 @@ static const struct component_ops exynos_dp_ops = {
static int exynos_dp_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct device_node *panel_node;
+ struct device_node *panel_node, *bridge_node, *endpoint;
struct exynos_dp_device *dp;
int ret;
@@ -1367,6 +1380,18 @@ static int exynos_dp_probe(struct platform_device *pdev)
return -EPROBE_DEFER;
}
+ endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
+ if (endpoint) {
+ bridge_node = of_graph_get_remote_port_parent(endpoint);
+ if (bridge_node) {
+ dp->bridge = of_drm_find_bridge(bridge_node);
+ of_node_put(bridge_node);
+ if (!dp->bridge)
+ return -EPROBE_DEFER;
+ } else
+ return -EPROBE_DEFER;
+ }
+
exynos_dp_display.ctx = dp;
ret = component_add(&pdev->dev, &exynos_dp_ops);
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
index a1aee69..3b0ba93 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.h
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.h
@@ -150,6 +150,7 @@ struct exynos_dp_device {
struct drm_connector connector;
struct drm_encoder *encoder;
struct drm_panel *panel;
+ struct drm_bridge *bridge;
struct clk *clock;
unsigned int irq;
void __iomem *reg_base;
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 05/14] drm/exynos: dp: support drm_bridge
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
Modify driver to support drm_bridge.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/video/exynos_dp.txt | 12 +++++++
drivers/gpu/drm/exynos/exynos_dp_core.c | 37 ++++++++++++++++----
drivers/gpu/drm/exynos/exynos_dp_core.h | 1 +
3 files changed, 44 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/video/exynos_dp.txt b/Documentation/devicetree/bindings/video/exynos_dp.txt
index 53dbccf..7a3a9cd 100644
--- a/Documentation/devicetree/bindings/video/exynos_dp.txt
+++ b/Documentation/devicetree/bindings/video/exynos_dp.txt
@@ -66,6 +66,10 @@ Optional properties for dp-controller:
Hotplug detect GPIO.
Indicates which GPIO should be used for hotplug
detection
+ -video interfaces: Device node can contain video interface port
+ nodes according to [1].
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
Example:
@@ -105,4 +109,12 @@ Board Specific portion:
vsync-len = <6>;
};
};
+
+ ports {
+ port at 0 {
+ dp_out: endpoint {
+ remote-endpoint = <&bridge_in>;
+ };
+ };
+ };
};
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 5025b70..d30c748 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -18,6 +18,7 @@
#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
+#include <linux/of_graph.h>
#include <linux/gpio.h>
#include <linux/component.h>
#include <linux/phy/phy.h>
@@ -989,9 +990,19 @@ static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
};
/* 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)
{
+ int ret;
+
+ encoder->bridge = dp->bridge;
+ dp->bridge->encoder = encoder;
+ ret = drm_bridge_attach(encoder->dev, dp->bridge);
+ if (ret) {
+ DRM_ERROR("Failed to attach bridge to drm\n");
+ return ret;
+ }
+
return 0;
}
@@ -1005,9 +1016,11 @@ 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);
- if (ret)
- return 0;
+ if (dp->bridge) {
+ ret = exynos_drm_attach_lcd_bridge(dp, encoder);
+ if (!ret)
+ return 0;
+ }
connector->polled = DRM_CONNECTOR_POLL_HPD;
@@ -1259,7 +1272,7 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
if (ret)
return ret;
- if (!dp->panel) {
+ if (!dp->panel && !dp->bridge) {
ret = exynos_dp_dt_parse_panel(dp);
if (ret)
return ret;
@@ -1345,7 +1358,7 @@ static const struct component_ops exynos_dp_ops = {
static int exynos_dp_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct device_node *panel_node;
+ struct device_node *panel_node, *bridge_node, *endpoint;
struct exynos_dp_device *dp;
int ret;
@@ -1367,6 +1380,18 @@ static int exynos_dp_probe(struct platform_device *pdev)
return -EPROBE_DEFER;
}
+ endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
+ if (endpoint) {
+ bridge_node = of_graph_get_remote_port_parent(endpoint);
+ if (bridge_node) {
+ dp->bridge = of_drm_find_bridge(bridge_node);
+ of_node_put(bridge_node);
+ if (!dp->bridge)
+ return -EPROBE_DEFER;
+ } else
+ return -EPROBE_DEFER;
+ }
+
exynos_dp_display.ctx = dp;
ret = component_add(&pdev->dev, &exynos_dp_ops);
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
index a1aee69..3b0ba93 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.h
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.h
@@ -150,6 +150,7 @@ struct exynos_dp_device {
struct drm_connector connector;
struct drm_encoder *encoder;
struct drm_panel *panel;
+ struct drm_bridge *bridge;
struct clk *clock;
unsigned int irq;
void __iomem *reg_base;
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 06/14] drm/bridge: ptn3460: support drm_panel
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Add drm_panel calls to the driver to make the panel and
bridge work together in tandem.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/drm/bridge/ptn3460.txt | 12 ++++++
drivers/gpu/drm/bridge/Kconfig | 1 +
drivers/gpu/drm/bridge/ptn3460.c | 42 ++++++++++++++++++++
3 files changed, 55 insertions(+)
diff --git a/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt b/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
index 52b93b2..663fe6c 100644
--- a/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
+++ b/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
@@ -17,6 +17,11 @@ Required properties:
| 6 | 1600x900 | ChiMei M215HGE |
+-------+------------+------------------+
+ - video interfaces: Device node can contain video interface port
+ nodes for panel according to [1].
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
Example:
lvds-bridge@20 {
compatible = "nxp,ptn3460";
@@ -24,4 +29,11 @@ Example:
powerdown-gpio = <&gpy2 5 1 0 0>;
reset-gpio = <&gpx1 5 1 0 0>;
edid-emulation = <5>;
+ ports {
+ port@0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
};
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 4254c2b..8b426e2 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -3,5 +3,6 @@ config DRM_PTN3460
depends on DRM
depends on OF && I2C
select DRM_KMS_HELPER
+ select DRM_PANEL
---help---
ptn3460 eDP-LVDS bridge chip driver.
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index 7adeb60..e6d5ae7 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -19,6 +19,9 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
+#include <linux/of_graph.h>
+
+#include <drm/drm_panel.h>
#include "bridge/ptn3460.h"
@@ -38,6 +41,7 @@ struct ptn3460_bridge {
struct i2c_client *client;
struct drm_bridge bridge;
struct edid *edid;
+ struct drm_panel *panel;
int gpio_pd_n;
int gpio_rst_n;
u32 edid_emulation;
@@ -137,6 +141,11 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
gpio_set_value(ptn_bridge->gpio_rst_n, 1);
}
+ if (drm_panel_prepare(ptn_bridge->panel)) {
+ DRM_ERROR("failed to prepare panel\n");
+ return;
+ }
+
/*
* 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
@@ -153,6 +162,12 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
static void ptn3460_enable(struct drm_bridge *bridge)
{
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
+
+ if (drm_panel_enable(ptn_bridge->panel)) {
+ DRM_ERROR("failed to enable panel\n");
+ return;
+ }
}
static void ptn3460_disable(struct drm_bridge *bridge)
@@ -164,6 +179,11 @@ static void ptn3460_disable(struct drm_bridge *bridge)
ptn_bridge->enabled = false;
+ if (drm_panel_disable(ptn_bridge->panel)) {
+ DRM_ERROR("failed to disable panel\n");
+ return;
+ }
+
if (gpio_is_valid(ptn_bridge->gpio_rst_n))
gpio_set_value(ptn_bridge->gpio_rst_n, 1);
@@ -173,6 +193,12 @@ static void ptn3460_disable(struct drm_bridge *bridge)
static void ptn3460_post_disable(struct drm_bridge *bridge)
{
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
+
+ if (drm_panel_unprepare(ptn_bridge->panel)) {
+ DRM_ERROR("failed to unprepare panel\n");
+ return;
+ }
}
static int ptn3460_get_modes(struct drm_connector *connector)
@@ -267,6 +293,9 @@ int ptn3460_bridge_attach(struct drm_bridge *bridge)
drm_mode_connector_attach_encoder(&ptn_bridge->connector,
bridge->encoder);
+ if (ptn_bridge->panel)
+ drm_panel_attach(ptn_bridge->panel, &ptn_bridge->connector);
+
return ret;
}
@@ -283,6 +312,7 @@ static int ptn3460_probe(struct i2c_client *client,
{
struct device *dev = &client->dev;
struct ptn3460_bridge *ptn_bridge;
+ struct device_node *endpoint, *panel_node;
int ret;
ptn_bridge = devm_kzalloc(dev, sizeof(*ptn_bridge), GFP_KERNEL);
@@ -290,6 +320,17 @@ static int ptn3460_probe(struct i2c_client *client,
return -ENOMEM;
}
+ endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
+ if (endpoint) {
+ panel_node = of_graph_get_remote_port_parent(endpoint);
+ if (panel_node) {
+ ptn_bridge->panel = of_drm_find_panel(panel_node);
+ of_node_put(panel_node);
+ if (!ptn_bridge->panel)
+ return -EPROBE_DEFER;
+ }
+ }
+
ptn_bridge->client = client;
ptn_bridge->gpio_pd_n = of_get_named_gpio(dev->of_node,
"powerdown-gpio", 0);
@@ -327,6 +368,7 @@ static int ptn3460_probe(struct i2c_client *client,
}
ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
+ ptn_bridge->bridge.of_node = dev->of_node;
ret = drm_bridge_add(&ptn_bridge->bridge);
if (ret) {
DRM_ERROR("Failed to add bridge\n");
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 06/14] drm/bridge: ptn3460: support drm_panel
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
Add drm_panel calls to the driver to make the panel and
bridge work together in tandem.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/drm/bridge/ptn3460.txt | 12 ++++++
drivers/gpu/drm/bridge/Kconfig | 1 +
drivers/gpu/drm/bridge/ptn3460.c | 42 ++++++++++++++++++++
3 files changed, 55 insertions(+)
diff --git a/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt b/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
index 52b93b2..663fe6c 100644
--- a/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
+++ b/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
@@ -17,6 +17,11 @@ Required properties:
| 6 | 1600x900 | ChiMei M215HGE |
+-------+------------+------------------+
+ - video interfaces: Device node can contain video interface port
+ nodes for panel according to [1].
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
Example:
lvds-bridge at 20 {
compatible = "nxp,ptn3460";
@@ -24,4 +29,11 @@ Example:
powerdown-gpio = <&gpy2 5 1 0 0>;
reset-gpio = <&gpx1 5 1 0 0>;
edid-emulation = <5>;
+ ports {
+ port at 0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
};
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 4254c2b..8b426e2 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -3,5 +3,6 @@ config DRM_PTN3460
depends on DRM
depends on OF && I2C
select DRM_KMS_HELPER
+ select DRM_PANEL
---help---
ptn3460 eDP-LVDS bridge chip driver.
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index 7adeb60..e6d5ae7 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -19,6 +19,9 @@
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
+#include <linux/of_graph.h>
+
+#include <drm/drm_panel.h>
#include "bridge/ptn3460.h"
@@ -38,6 +41,7 @@ struct ptn3460_bridge {
struct i2c_client *client;
struct drm_bridge bridge;
struct edid *edid;
+ struct drm_panel *panel;
int gpio_pd_n;
int gpio_rst_n;
u32 edid_emulation;
@@ -137,6 +141,11 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
gpio_set_value(ptn_bridge->gpio_rst_n, 1);
}
+ if (drm_panel_prepare(ptn_bridge->panel)) {
+ DRM_ERROR("failed to prepare panel\n");
+ return;
+ }
+
/*
* 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
@@ -153,6 +162,12 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
static void ptn3460_enable(struct drm_bridge *bridge)
{
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
+
+ if (drm_panel_enable(ptn_bridge->panel)) {
+ DRM_ERROR("failed to enable panel\n");
+ return;
+ }
}
static void ptn3460_disable(struct drm_bridge *bridge)
@@ -164,6 +179,11 @@ static void ptn3460_disable(struct drm_bridge *bridge)
ptn_bridge->enabled = false;
+ if (drm_panel_disable(ptn_bridge->panel)) {
+ DRM_ERROR("failed to disable panel\n");
+ return;
+ }
+
if (gpio_is_valid(ptn_bridge->gpio_rst_n))
gpio_set_value(ptn_bridge->gpio_rst_n, 1);
@@ -173,6 +193,12 @@ static void ptn3460_disable(struct drm_bridge *bridge)
static void ptn3460_post_disable(struct drm_bridge *bridge)
{
+ struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge);
+
+ if (drm_panel_unprepare(ptn_bridge->panel)) {
+ DRM_ERROR("failed to unprepare panel\n");
+ return;
+ }
}
static int ptn3460_get_modes(struct drm_connector *connector)
@@ -267,6 +293,9 @@ int ptn3460_bridge_attach(struct drm_bridge *bridge)
drm_mode_connector_attach_encoder(&ptn_bridge->connector,
bridge->encoder);
+ if (ptn_bridge->panel)
+ drm_panel_attach(ptn_bridge->panel, &ptn_bridge->connector);
+
return ret;
}
@@ -283,6 +312,7 @@ static int ptn3460_probe(struct i2c_client *client,
{
struct device *dev = &client->dev;
struct ptn3460_bridge *ptn_bridge;
+ struct device_node *endpoint, *panel_node;
int ret;
ptn_bridge = devm_kzalloc(dev, sizeof(*ptn_bridge), GFP_KERNEL);
@@ -290,6 +320,17 @@ static int ptn3460_probe(struct i2c_client *client,
return -ENOMEM;
}
+ endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
+ if (endpoint) {
+ panel_node = of_graph_get_remote_port_parent(endpoint);
+ if (panel_node) {
+ ptn_bridge->panel = of_drm_find_panel(panel_node);
+ of_node_put(panel_node);
+ if (!ptn_bridge->panel)
+ return -EPROBE_DEFER;
+ }
+ }
+
ptn_bridge->client = client;
ptn_bridge->gpio_pd_n = of_get_named_gpio(dev->of_node,
"powerdown-gpio", 0);
@@ -327,6 +368,7 @@ static int ptn3460_probe(struct i2c_client *client,
}
ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
+ ptn_bridge->bridge.of_node = dev->of_node;
ret = drm_bridge_add(&ptn_bridge->bridge);
if (ret) {
DRM_ERROR("Failed to add bridge\n");
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 07/14] drm/bridge: ptn3460: probe connector at the end of bridge attach
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Force bridge connector detection at the end of the bridge attach.
This is needed to detect the bridge connector early.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/ptn3460.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index e6d5ae7..9f800a1 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -281,6 +281,7 @@ int ptn3460_bridge_attach(struct drm_bridge *bridge)
return -ENODEV;
}
+ ptn_bridge->connector.polled = DRM_CONNECTOR_POLL_HPD;
ret = drm_connector_init(bridge->dev, &ptn_bridge->connector,
&ptn3460_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
if (ret) {
@@ -296,6 +297,8 @@ int ptn3460_bridge_attach(struct drm_bridge *bridge)
if (ptn_bridge->panel)
drm_panel_attach(ptn_bridge->panel, &ptn_bridge->connector);
+ drm_helper_hpd_irq_event(ptn_bridge->connector.dev);
+
return ret;
}
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 07/14] drm/bridge: ptn3460: probe connector at the end of bridge attach
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
Force bridge connector detection at the end of the bridge attach.
This is needed to detect the bridge connector early.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/ptn3460.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index e6d5ae7..9f800a1 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -281,6 +281,7 @@ int ptn3460_bridge_attach(struct drm_bridge *bridge)
return -ENODEV;
}
+ ptn_bridge->connector.polled = DRM_CONNECTOR_POLL_HPD;
ret = drm_connector_init(bridge->dev, &ptn_bridge->connector,
&ptn3460_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
if (ret) {
@@ -296,6 +297,8 @@ int ptn3460_bridge_attach(struct drm_bridge *bridge)
if (ptn_bridge->panel)
drm_panel_attach(ptn_bridge->panel, &ptn_bridge->connector);
+ drm_helper_hpd_irq_event(ptn_bridge->connector.dev);
+
return ret;
}
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 08/14] drm/bridge: ptn3460: use gpiod interface
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Modify driver to support gpiod interface.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/ptn3460.c | 88 ++++++++++++++++----------------------
1 file changed, 36 insertions(+), 52 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index 9f800a1..826833e 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -42,8 +42,8 @@ struct ptn3460_bridge {
struct drm_bridge bridge;
struct edid *edid;
struct drm_panel *panel;
- int gpio_pd_n;
- int gpio_rst_n;
+ struct gpio_desc *gpio_pd_n;
+ struct gpio_desc *gpio_rst_n;
u32 edid_emulation;
bool enabled;
};
@@ -132,14 +132,11 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
if (ptn_bridge->enabled)
return;
- if (gpio_is_valid(ptn_bridge->gpio_pd_n))
- gpio_set_value(ptn_bridge->gpio_pd_n, 1);
+ gpiod_set_value(ptn_bridge->gpio_pd_n, 1);
- if (gpio_is_valid(ptn_bridge->gpio_rst_n)) {
- gpio_set_value(ptn_bridge->gpio_rst_n, 0);
- usleep_range(10, 20);
- gpio_set_value(ptn_bridge->gpio_rst_n, 1);
- }
+ gpiod_set_value(ptn_bridge->gpio_rst_n, 0);
+ usleep_range(10, 20);
+ gpiod_set_value(ptn_bridge->gpio_rst_n, 1);
if (drm_panel_prepare(ptn_bridge->panel)) {
DRM_ERROR("failed to prepare panel\n");
@@ -184,11 +181,8 @@ static void ptn3460_disable(struct drm_bridge *bridge)
return;
}
- if (gpio_is_valid(ptn_bridge->gpio_rst_n))
- gpio_set_value(ptn_bridge->gpio_rst_n, 1);
-
- if (gpio_is_valid(ptn_bridge->gpio_pd_n))
- gpio_set_value(ptn_bridge->gpio_pd_n, 0);
+ gpiod_set_value(ptn_bridge->gpio_rst_n, 1);
+ gpiod_set_value(ptn_bridge->gpio_pd_n, 0);
}
static void ptn3460_post_disable(struct drm_bridge *bridge)
@@ -335,39 +329,41 @@ static int ptn3460_probe(struct i2c_client *client,
}
ptn_bridge->client = client;
- ptn_bridge->gpio_pd_n = of_get_named_gpio(dev->of_node,
- "powerdown-gpio", 0);
- if (gpio_is_valid(ptn_bridge->gpio_pd_n)) {
- ret = gpio_request_one(ptn_bridge->gpio_pd_n,
- GPIOF_OUT_INIT_HIGH, "PTN3460_PD_N");
- if (ret) {
- dev_err(dev, "Request powerdown-gpio failed (%d)\n",
- ret);
- return ret;
- }
+
+ ptn_bridge->gpio_pd_n = devm_gpiod_get(&client->dev, "powerdown");
+ if (IS_ERR(ptn_bridge->gpio_pd_n)) {
+ ret = PTR_ERR(ptn_bridge->gpio_pd_n);
+ dev_err(dev, "cannot get gpio_pd_n %d\n", ret);
+ return ret;
}
- ptn_bridge->gpio_rst_n = of_get_named_gpio(dev->of_node,
- "reset-gpio", 0);
- if (gpio_is_valid(ptn_bridge->gpio_rst_n)) {
- /*
- * Request the reset pin low to avoid the bridge being
- * initialized prematurely
- */
- ret = gpio_request_one(ptn_bridge->gpio_rst_n,
- GPIOF_OUT_INIT_LOW, "PTN3460_RST_N");
- if (ret) {
- dev_err(dev, "Request reset-gpio failed (%d)\n", ret);
- gpio_free(ptn_bridge->gpio_pd_n);
- return ret;
- }
+ ret = gpiod_direction_output(ptn_bridge->gpio_pd_n, 1);
+ if (ret) {
+ DRM_ERROR("cannot configure gpio_pd_n\n");
+ return ret;
+ }
+
+ ptn_bridge->gpio_rst_n = devm_gpiod_get(&client->dev, "reset");
+ if (IS_ERR(ptn_bridge->gpio_rst_n)) {
+ ret = PTR_ERR(ptn_bridge->gpio_rst_n);
+ DRM_ERROR("cannot get gpio_rst_n %d\n", ret);
+ return ret;
+ }
+ /*
+ * Request the reset pin low to avoid the bridge being
+ * initialized prematurely
+ */
+ ret = gpiod_direction_output(ptn_bridge->gpio_rst_n, 0);
+ if (ret) {
+ DRM_ERROR("cannot configure gpio_rst_n\n");
+ return ret;
}
ret = of_property_read_u32(dev->of_node, "edid-emulation",
&ptn_bridge->edid_emulation);
if (ret) {
dev_err(dev, "Can't read EDID emulation value\n");
- goto err;
+ return ret;
}
ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
@@ -375,19 +371,12 @@ static int ptn3460_probe(struct i2c_client *client,
ret = drm_bridge_add(&ptn_bridge->bridge);
if (ret) {
DRM_ERROR("Failed to add bridge\n");
- goto err;
+ return ret;
}
i2c_set_clientdata(client, ptn_bridge);
return 0;
-
-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;
}
static int ptn3460_remove(struct i2c_client *client)
@@ -396,11 +385,6 @@ static int ptn3460_remove(struct i2c_client *client)
drm_bridge_remove(&ptn_bridge->bridge);
- 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 0;
}
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 08/14] drm/bridge: ptn3460: use gpiod interface
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
Modify driver to support gpiod interface.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
drivers/gpu/drm/bridge/ptn3460.c | 88 ++++++++++++++++----------------------
1 file changed, 36 insertions(+), 52 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index 9f800a1..826833e 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -42,8 +42,8 @@ struct ptn3460_bridge {
struct drm_bridge bridge;
struct edid *edid;
struct drm_panel *panel;
- int gpio_pd_n;
- int gpio_rst_n;
+ struct gpio_desc *gpio_pd_n;
+ struct gpio_desc *gpio_rst_n;
u32 edid_emulation;
bool enabled;
};
@@ -132,14 +132,11 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
if (ptn_bridge->enabled)
return;
- if (gpio_is_valid(ptn_bridge->gpio_pd_n))
- gpio_set_value(ptn_bridge->gpio_pd_n, 1);
+ gpiod_set_value(ptn_bridge->gpio_pd_n, 1);
- if (gpio_is_valid(ptn_bridge->gpio_rst_n)) {
- gpio_set_value(ptn_bridge->gpio_rst_n, 0);
- usleep_range(10, 20);
- gpio_set_value(ptn_bridge->gpio_rst_n, 1);
- }
+ gpiod_set_value(ptn_bridge->gpio_rst_n, 0);
+ usleep_range(10, 20);
+ gpiod_set_value(ptn_bridge->gpio_rst_n, 1);
if (drm_panel_prepare(ptn_bridge->panel)) {
DRM_ERROR("failed to prepare panel\n");
@@ -184,11 +181,8 @@ static void ptn3460_disable(struct drm_bridge *bridge)
return;
}
- if (gpio_is_valid(ptn_bridge->gpio_rst_n))
- gpio_set_value(ptn_bridge->gpio_rst_n, 1);
-
- if (gpio_is_valid(ptn_bridge->gpio_pd_n))
- gpio_set_value(ptn_bridge->gpio_pd_n, 0);
+ gpiod_set_value(ptn_bridge->gpio_rst_n, 1);
+ gpiod_set_value(ptn_bridge->gpio_pd_n, 0);
}
static void ptn3460_post_disable(struct drm_bridge *bridge)
@@ -335,39 +329,41 @@ static int ptn3460_probe(struct i2c_client *client,
}
ptn_bridge->client = client;
- ptn_bridge->gpio_pd_n = of_get_named_gpio(dev->of_node,
- "powerdown-gpio", 0);
- if (gpio_is_valid(ptn_bridge->gpio_pd_n)) {
- ret = gpio_request_one(ptn_bridge->gpio_pd_n,
- GPIOF_OUT_INIT_HIGH, "PTN3460_PD_N");
- if (ret) {
- dev_err(dev, "Request powerdown-gpio failed (%d)\n",
- ret);
- return ret;
- }
+
+ ptn_bridge->gpio_pd_n = devm_gpiod_get(&client->dev, "powerdown");
+ if (IS_ERR(ptn_bridge->gpio_pd_n)) {
+ ret = PTR_ERR(ptn_bridge->gpio_pd_n);
+ dev_err(dev, "cannot get gpio_pd_n %d\n", ret);
+ return ret;
}
- ptn_bridge->gpio_rst_n = of_get_named_gpio(dev->of_node,
- "reset-gpio", 0);
- if (gpio_is_valid(ptn_bridge->gpio_rst_n)) {
- /*
- * Request the reset pin low to avoid the bridge being
- * initialized prematurely
- */
- ret = gpio_request_one(ptn_bridge->gpio_rst_n,
- GPIOF_OUT_INIT_LOW, "PTN3460_RST_N");
- if (ret) {
- dev_err(dev, "Request reset-gpio failed (%d)\n", ret);
- gpio_free(ptn_bridge->gpio_pd_n);
- return ret;
- }
+ ret = gpiod_direction_output(ptn_bridge->gpio_pd_n, 1);
+ if (ret) {
+ DRM_ERROR("cannot configure gpio_pd_n\n");
+ return ret;
+ }
+
+ ptn_bridge->gpio_rst_n = devm_gpiod_get(&client->dev, "reset");
+ if (IS_ERR(ptn_bridge->gpio_rst_n)) {
+ ret = PTR_ERR(ptn_bridge->gpio_rst_n);
+ DRM_ERROR("cannot get gpio_rst_n %d\n", ret);
+ return ret;
+ }
+ /*
+ * Request the reset pin low to avoid the bridge being
+ * initialized prematurely
+ */
+ ret = gpiod_direction_output(ptn_bridge->gpio_rst_n, 0);
+ if (ret) {
+ DRM_ERROR("cannot configure gpio_rst_n\n");
+ return ret;
}
ret = of_property_read_u32(dev->of_node, "edid-emulation",
&ptn_bridge->edid_emulation);
if (ret) {
dev_err(dev, "Can't read EDID emulation value\n");
- goto err;
+ return ret;
}
ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs;
@@ -375,19 +371,12 @@ static int ptn3460_probe(struct i2c_client *client,
ret = drm_bridge_add(&ptn_bridge->bridge);
if (ret) {
DRM_ERROR("Failed to add bridge\n");
- goto err;
+ return ret;
}
i2c_set_clientdata(client, ptn_bridge);
return 0;
-
-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;
}
static int ptn3460_remove(struct i2c_client *client)
@@ -396,11 +385,6 @@ static int ptn3460_remove(struct i2c_client *client)
drm_bridge_remove(&ptn_bridge->bridge);
- 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 0;
}
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 09/14] Documentation: drm: bridge: move to video/bridge
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Move drm/bridge documentation to video/bridge.
Also, add proper documentation for gpios used by ptn3460.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/drm/bridge/ptn3460.txt | 39 --------------------
.../devicetree/bindings/video/bridge/ptn3460.txt | 39 ++++++++++++++++++++
2 files changed, 39 insertions(+), 39 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
create mode 100644 Documentation/devicetree/bindings/video/bridge/ptn3460.txt
diff --git a/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt b/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
deleted file mode 100644
index 663fe6c..0000000
--- a/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
+++ /dev/null
@@ -1,39 +0,0 @@
-ptn3460 bridge bindings
-
-Required properties:
- - compatible: "nxp,ptn3460"
- - reg: i2c address of the bridge
- - powerdown-gpio: OF device-tree gpio specification
- - reset-gpio: OF device-tree gpio specification
- - edid-emulation: The EDID emulation entry to use
- +-------+------------+------------------+
- | Value | Resolution | Description |
- | 0 | 1024x768 | NXP Generic |
- | 1 | 1920x1080 | NXP Generic |
- | 2 | 1920x1080 | NXP Generic |
- | 3 | 1600x900 | Samsung LTM200KT |
- | 4 | 1920x1080 | Samsung LTM230HT |
- | 5 | 1366x768 | NXP Generic |
- | 6 | 1600x900 | ChiMei M215HGE |
- +-------+------------+------------------+
-
- - video interfaces: Device node can contain video interface port
- nodes for panel according to [1].
-
-[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
-
-Example:
- lvds-bridge@20 {
- compatible = "nxp,ptn3460";
- reg = <0x20>;
- powerdown-gpio = <&gpy2 5 1 0 0>;
- reset-gpio = <&gpx1 5 1 0 0>;
- edid-emulation = <5>;
- ports {
- port@0 {
- bridge_out: endpoint {
- remote-endpoint = <&panel_in>;
- };
- };
- };
- };
diff --git a/Documentation/devicetree/bindings/video/bridge/ptn3460.txt b/Documentation/devicetree/bindings/video/bridge/ptn3460.txt
new file mode 100644
index 0000000..361971b
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/bridge/ptn3460.txt
@@ -0,0 +1,39 @@
+ptn3460 bridge bindings
+
+Required properties:
+ - compatible: "nxp,ptn3460"
+ - reg: i2c address of the bridge
+ - powerdown-gpio: OF device-tree gpio specification for PD_N pin.
+ - reset-gpio: OF device-tree gpio specification for RST_N pin.
+ - edid-emulation: The EDID emulation entry to use
+ +-------+------------+------------------+
+ | Value | Resolution | Description |
+ | 0 | 1024x768 | NXP Generic |
+ | 1 | 1920x1080 | NXP Generic |
+ | 2 | 1920x1080 | NXP Generic |
+ | 3 | 1600x900 | Samsung LTM200KT |
+ | 4 | 1920x1080 | Samsung LTM230HT |
+ | 5 | 1366x768 | NXP Generic |
+ | 6 | 1600x900 | ChiMei M215HGE |
+ +-------+------------+------------------+
+
+ - video interfaces: Device node can contain video interface port
+ nodes for panel according to [1].
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example:
+ lvds-bridge@20 {
+ compatible = "nxp,ptn3460";
+ reg = <0x20>;
+ powerdown-gpio = <&gpy2 5 1 0 0>;
+ reset-gpio = <&gpx1 5 1 0 0>;
+ edid-emulation = <5>;
+ ports {
+ port@0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
+ };
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 09/14] Documentation: drm: bridge: move to video/bridge
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
Move drm/bridge documentation to video/bridge.
Also, add proper documentation for gpios used by ptn3460.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/drm/bridge/ptn3460.txt | 39 --------------------
.../devicetree/bindings/video/bridge/ptn3460.txt | 39 ++++++++++++++++++++
2 files changed, 39 insertions(+), 39 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
create mode 100644 Documentation/devicetree/bindings/video/bridge/ptn3460.txt
diff --git a/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt b/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
deleted file mode 100644
index 663fe6c..0000000
--- a/Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
+++ /dev/null
@@ -1,39 +0,0 @@
-ptn3460 bridge bindings
-
-Required properties:
- - compatible: "nxp,ptn3460"
- - reg: i2c address of the bridge
- - powerdown-gpio: OF device-tree gpio specification
- - reset-gpio: OF device-tree gpio specification
- - edid-emulation: The EDID emulation entry to use
- +-------+------------+------------------+
- | Value | Resolution | Description |
- | 0 | 1024x768 | NXP Generic |
- | 1 | 1920x1080 | NXP Generic |
- | 2 | 1920x1080 | NXP Generic |
- | 3 | 1600x900 | Samsung LTM200KT |
- | 4 | 1920x1080 | Samsung LTM230HT |
- | 5 | 1366x768 | NXP Generic |
- | 6 | 1600x900 | ChiMei M215HGE |
- +-------+------------+------------------+
-
- - video interfaces: Device node can contain video interface port
- nodes for panel according to [1].
-
-[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
-
-Example:
- lvds-bridge at 20 {
- compatible = "nxp,ptn3460";
- reg = <0x20>;
- powerdown-gpio = <&gpy2 5 1 0 0>;
- reset-gpio = <&gpx1 5 1 0 0>;
- edid-emulation = <5>;
- ports {
- port at 0 {
- bridge_out: endpoint {
- remote-endpoint = <&panel_in>;
- };
- };
- };
- };
diff --git a/Documentation/devicetree/bindings/video/bridge/ptn3460.txt b/Documentation/devicetree/bindings/video/bridge/ptn3460.txt
new file mode 100644
index 0000000..361971b
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/bridge/ptn3460.txt
@@ -0,0 +1,39 @@
+ptn3460 bridge bindings
+
+Required properties:
+ - compatible: "nxp,ptn3460"
+ - reg: i2c address of the bridge
+ - powerdown-gpio: OF device-tree gpio specification for PD_N pin.
+ - reset-gpio: OF device-tree gpio specification for RST_N pin.
+ - edid-emulation: The EDID emulation entry to use
+ +-------+------------+------------------+
+ | Value | Resolution | Description |
+ | 0 | 1024x768 | NXP Generic |
+ | 1 | 1920x1080 | NXP Generic |
+ | 2 | 1920x1080 | NXP Generic |
+ | 3 | 1600x900 | Samsung LTM200KT |
+ | 4 | 1920x1080 | Samsung LTM230HT |
+ | 5 | 1366x768 | NXP Generic |
+ | 6 | 1600x900 | ChiMei M215HGE |
+ +-------+------------+------------------+
+
+ - video interfaces: Device node can contain video interface port
+ nodes for panel according to [1].
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example:
+ lvds-bridge at 20 {
+ compatible = "nxp,ptn3460";
+ reg = <0x20>;
+ powerdown-gpio = <&gpy2 5 1 0 0>;
+ reset-gpio = <&gpx1 5 1 0 0>;
+ edid-emulation = <5>;
+ ports {
+ port at 0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
+ };
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 10/14] Documentation: devicetree: Add vendor prefix for parade
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
ps8622 eDP-LVDS converter bridge chip is from parade technologies
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/vendor-prefixes.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 723999d..0be1508 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -110,6 +110,7 @@ nxp NXP Semiconductors
onnn ON Semiconductor Corp.
opencores OpenCores.org
panasonic Panasonic Corporation
+parade Parade Technologies Inc.
phytec PHYTEC Messtechnik GmbH
picochip Picochip Ltd
plathome Plat'Home Co., Ltd.
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 10/14] Documentation: devicetree: Add vendor prefix for parade
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
ps8622 eDP-LVDS converter bridge chip is from parade technologies
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/vendor-prefixes.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 723999d..0be1508 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -110,6 +110,7 @@ nxp NXP Semiconductors
onnn ON Semiconductor Corp.
opencores OpenCores.org
panasonic Panasonic Corporation
+parade Parade Technologies Inc.
phytec PHYTEC Messtechnik GmbH
picochip Picochip Ltd
plathome Plat'Home Co., Ltd.
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 11/14] Documentation: bridge: Add documentation for ps8622 DT properties
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Add documentation for DT properties supported by ps8622/ps8625
eDP-LVDS converter.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/video/bridge/ps8622.txt | 31 ++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/video/bridge/ps8622.txt
diff --git a/Documentation/devicetree/bindings/video/bridge/ps8622.txt b/Documentation/devicetree/bindings/video/bridge/ps8622.txt
new file mode 100644
index 0000000..c989c38
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/bridge/ps8622.txt
@@ -0,0 +1,31 @@
+ps8622-bridge bindings
+
+Required properties:
+ - compatible: "parade,ps8622" or "parade,ps8625"
+ - reg: first i2c address of the bridge
+ - sleep-gpios: OF device-tree gpio specification for PD_ pin.
+ - reset-gpios: OF device-tree gpio specification for RST_ pin.
+
+Optional properties:
+ - lane-count: number of DP lanes to use
+ - use-external-pwm: backlight will be controlled by an external PWM
+ - video interfaces: Device node can contain video interface port
+ nodes for panel according to [1].
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example:
+ lvds-bridge@48 {
+ compatible = "parade,ps8622";
+ reg = <0x48>;
+ sleep-gpios = <&gpc3 6 1 0 0>;
+ reset-gpios = <&gpc3 1 1 0 0>;
+ lane-count = <1>;
+ ports {
+ port@0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
+ };
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 11/14] Documentation: bridge: Add documentation for ps8622 DT properties
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
Add documentation for DT properties supported by ps8622/ps8625
eDP-LVDS converter.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
.../devicetree/bindings/video/bridge/ps8622.txt | 31 ++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/video/bridge/ps8622.txt
diff --git a/Documentation/devicetree/bindings/video/bridge/ps8622.txt b/Documentation/devicetree/bindings/video/bridge/ps8622.txt
new file mode 100644
index 0000000..c989c38
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/bridge/ps8622.txt
@@ -0,0 +1,31 @@
+ps8622-bridge bindings
+
+Required properties:
+ - compatible: "parade,ps8622" or "parade,ps8625"
+ - reg: first i2c address of the bridge
+ - sleep-gpios: OF device-tree gpio specification for PD_ pin.
+ - reset-gpios: OF device-tree gpio specification for RST_ pin.
+
+Optional properties:
+ - lane-count: number of DP lanes to use
+ - use-external-pwm: backlight will be controlled by an external PWM
+ - video interfaces: Device node can contain video interface port
+ nodes for panel according to [1].
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example:
+ lvds-bridge at 48 {
+ compatible = "parade,ps8622";
+ reg = <0x48>;
+ sleep-gpios = <&gpc3 6 1 0 0>;
+ reset-gpios = <&gpc3 1 1 0 0>;
+ lane-count = <1>;
+ ports {
+ port at 0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
+ };
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 12/14] drm/bridge: Add i2c based driver for ps8622/ps8625 bridge
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Vincent Palatin,
Andrew Bresticker, Sean Paul, Rahul Sharma, 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>
---
drivers/gpu/drm/bridge/Kconfig | 9 +
drivers/gpu/drm/bridge/Makefile | 1 +
drivers/gpu/drm/bridge/ps8622.c | 684 +++++++++++++++++++++++++++++++++++++++
3 files changed, 694 insertions(+)
create mode 100644 drivers/gpu/drm/bridge/ps8622.c
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 8b426e2..d06eda3 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -6,3 +6,12 @@ config DRM_PTN3460
select DRM_PANEL
---help---
ptn3460 eDP-LVDS bridge chip driver.
+
+config DRM_PS8622
+ tristate "Parade eDP/LVDS bridge"
+ depends on OF && I2C
+ select DRM_PANEL
+ select BACKLIGHT_LCD_SUPPORT
+ select BACKLIGHT_CLASS_DEVICE
+ ---help---
+ parade eDP-LVDS bridge chip driver.
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index b4733e1..105da3e 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -1,3 +1,4 @@
ccflags-y := -Iinclude/drm
+obj-$(CONFIG_DRM_PS8622) += ps8622.o
obj-$(CONFIG_DRM_PTN3460) += ptn3460.o
diff --git a/drivers/gpu/drm/bridge/ps8622.c b/drivers/gpu/drm/bridge/ps8622.c
new file mode 100644
index 0000000..5474a39
--- /dev/null
+++ b/drivers/gpu/drm/bridge/ps8622.c
@@ -0,0 +1,684 @@
+/*
+ * 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/backlight.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.h>
+#include <linux/pm.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_panel.h>
+
+#include "drmP.h"
+#include "drm_crtc.h"
+#include "drm_crtc_helper.h"
+
+/* 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
+
+struct ps8622_bridge {
+ struct drm_connector connector;
+ struct i2c_client *client;
+ struct drm_bridge bridge;
+ struct drm_panel *panel;
+ struct regulator *v12;
+ struct backlight_device *bl;
+
+ struct gpio_desc *gpio_slp;
+ struct gpio_desc *gpio_rst;
+
+ u32 max_lane_count;
+ u32 lane_count;
+
+ bool enabled;
+};
+
+static inline struct ps8622_bridge *
+ bridge_to_ps8622(struct drm_bridge *bridge)
+{
+ return container_of(bridge, struct ps8622_bridge, bridge);
+}
+
+static inline struct ps8622_bridge *
+ connector_to_ps8622(struct drm_connector *connector)
+{
+ return container_of(connector, struct ps8622_bridge, connector);
+}
+
+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 *ps8622)
+{
+ struct i2c_client *cl = ps8622->client;
+ int err = 0;
+
+ /* HPD low */
+ err = ps8622_set(cl, 0x02, 0xa1, 0x01);
+ if (err)
+ goto error;
+
+ /* SW setting: [1:0] SW output 1.2V voltage is lower to 96% */
+ err = ps8622_set(cl, 0x04, 0x14, 0x01);
+ if (err)
+ goto error;
+
+ /* RCO SS setting: [5:4] = b01 0.5%, b10 1%, b11 1.5% */
+ err = ps8622_set(cl, 0x04, 0xe3, 0x20);
+ if (err)
+ goto error;
+
+ /* [7] RCO SS enable */
+ err = ps8622_set(cl, 0x04, 0xe2, 0x80);
+ if (err)
+ goto error;
+
+ /* RPHY Setting
+ * [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, 0x8a, 0x0c);
+ if (err)
+ goto error;
+
+ /* [3] RFD always on */
+ err = ps8622_set(cl, 0x04, 0x89, 0x08);
+ if (err)
+ goto error;
+
+ /* CTN lock in/out: 20000ppm/80000ppm. Lock out 2 times. */
+ err = ps8622_set(cl, 0x04, 0x71, 0x2d);
+ if (err)
+ goto error;
+
+ /* 2.7G CDR settings: NOF=40LSB for HBR CDR setting */
+ err = ps8622_set(cl, 0x04, 0x7d, 0x07);
+ if (err)
+ goto error;
+
+ /* [1:0] Fmin=+4bands */
+ err = ps8622_set(cl, 0x04, 0x7b, 0x00);
+ if (err)
+ goto error;
+
+ /* [7:5] DCO_FTRNG=+-40% */
+ err = ps8622_set(cl, 0x04, 0x7a, 0xfd);
+ if (err)
+ goto error;
+
+ /* 1.62G CDR settings: [5:2]NOF=64LSB [1:0]DCO scale is 2/5 */
+ err = ps8622_set(cl, 0x04, 0xc0, 0x12);
+ if (err)
+ goto error;
+
+ /* Gitune=-37% */
+ err = ps8622_set(cl, 0x04, 0xc1, 0x92);
+ if (err)
+ goto error;
+
+ /* Fbstep=100% */
+ err = ps8622_set(cl, 0x04, 0xc2, 0x1c);
+ if (err)
+ goto error;
+
+ /* [7] LOS signal disable */
+ err = ps8622_set(cl, 0x04, 0x32, 0x80);
+ if (err)
+ goto error;
+
+ /* RPIO Setting: [7:4] LVDS driver bias current : 75% (250mV swing) */
+ err = ps8622_set(cl, 0x04, 0x00, 0xb0);
+ if (err)
+ goto error;
+
+ /* [7:6] Right-bar GPIO output strength is 8mA */
+ err = ps8622_set(cl, 0x04, 0x15, 0x40);
+ if (err)
+ goto error;
+
+ /* EQ Training State Machine Setting, RCO calibration start */
+ err = ps8622_set(cl, 0x04, 0x54, 0x10);
+ if (err)
+ goto error;
+
+ /* Logic, needs more than 10 I2C command */
+ /* [4:0] MAX_LANE_COUNT set to max supported lanes */
+ err = ps8622_set(cl, 0x01, 0x02, 0x80 | ps8622->max_lane_count);
+ if (err)
+ goto error;
+
+ /* [4:0] LANE_COUNT_SET set to chosen lane count */
+ err = ps8622_set(cl, 0x01, 0x21, 0x80 | ps8622->lane_count);
+ if (err)
+ goto error;
+
+ err = ps8622_set(cl, 0x00, 0x52, 0x20);
+ if (err)
+ goto error;
+
+ /* HPD CP toggle enable */
+ err = ps8622_set(cl, 0x00, 0xf1, 0x03);
+ if (err)
+ goto error;
+
+ err = ps8622_set(cl, 0x00, 0x62, 0x41);
+ if (err)
+ goto error;
+
+ /* Counter number, add 1ms counter delay */
+ err = ps8622_set(cl, 0x00, 0xf6, 0x01);
+ if (err)
+ goto error;
+
+ /* [6]PWM function control by DPCD0040f[7], default is PWM block */
+ err = ps8622_set(cl, 0x00, 0x77, 0x06);
+ if (err)
+ goto error;
+
+ /* 04h Adjust VTotal toleranceto fix the 30Hz no display issue */
+ err = ps8622_set(cl, 0x00, 0x4c, 0x04);
+ if (err)
+ goto error;
+
+ /* DPCD00400='h00, Parade OUI ='h001cf8 */
+ err = ps8622_set(cl, 0x01, 0xc0, 0x00);
+ if (err)
+ goto error;
+
+ /* DPCD00401='h1c */
+ err = ps8622_set(cl, 0x01, 0xc1, 0x1c);
+ if (err)
+ goto error;
+
+ /* DPCD00402='hf8 */
+ err = ps8622_set(cl, 0x01, 0xc2, 0xf8);
+ if (err)
+ goto error;
+
+ /* DPCD403~408 = ASCII code, D2SLV5='h4432534c5635 */
+ err = ps8622_set(cl, 0x01, 0xc3, 0x44);
+ if (err)
+ goto error;
+
+ /* DPCD404 */
+ err = ps8622_set(cl, 0x01, 0xc4, 0x32);
+ if (err)
+ goto error;
+
+ /* DPCD405 */
+ err = ps8622_set(cl, 0x01, 0xc5, 0x53);
+ if (err)
+ goto error;
+
+ /* DPCD406 */
+ err = ps8622_set(cl, 0x01, 0xc6, 0x4c);
+ if (err)
+ goto error;
+
+ /* DPCD407 */
+ err = ps8622_set(cl, 0x01, 0xc7, 0x56);
+ if (err)
+ goto error;
+
+ /* DPCD408 */
+ err = ps8622_set(cl, 0x01, 0xc8, 0x35);
+ if (err)
+ goto error;
+
+ /* DPCD40A, Initial Code major revision '01' */
+ err = ps8622_set(cl, 0x01, 0xca, 0x01);
+ if (err)
+ goto error;
+
+ /* DPCD40B, Initial Code minor revision '05' */
+ err = ps8622_set(cl, 0x01, 0xcb, 0x05);
+ if (err)
+ goto error;
+
+
+ if (ps8622->bl) {
+ /* DPCD720, internal PWM */
+ err = ps8622_set(cl, 0x01, 0xa5, 0xa0);
+ if (err)
+ goto error;
+
+ /* FFh for 100% brightness, 0h for 0% brightness */
+ err = ps8622_set(cl, 0x01, 0xa7,
+ ps8622->bl->props.brightness);
+ if (err)
+ goto error;
+ } else {
+ /* DPCD720, external PWM */
+ err = ps8622_set(cl, 0x01, 0xa5, 0x80);
+ if (err)
+ goto error;
+ }
+
+ /* Set LVDS output as 6bit-VESA mapping, single LVDS channel */
+ err = ps8622_set(cl, 0x01, 0xcc, 0x13);
+ if (err)
+ goto error;
+
+ /* Enable SSC set by register */
+ err = ps8622_set(cl, 0x02, 0xb1, 0x20);
+ if (err)
+ goto error;
+
+ /* Set SSC enabled and +/-1% central spreading */
+ err = ps8622_set(cl, 0x04, 0x10, 0x16);
+ if (err)
+ goto error;
+
+ /* Logic end */
+ /* MPU Clock source: LC => RCO */
+ err = ps8622_set(cl, 0x04, 0x59, 0x60);
+ if (err)
+ goto error;
+
+ /* LC -> RCO */
+ err = ps8622_set(cl, 0x04, 0x54, 0x14);
+ if (err)
+ goto error;
+
+ /* HPD high */
+ err = ps8622_set(cl, 0x02, 0xa1, 0x91);
+
+error:
+ return err ? -EIO : 0;
+}
+
+static int ps8622_backlight_update(struct backlight_device *bl)
+{
+ struct ps8622_bridge *ps8622 = 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;
+
+ if (!ps8622->enabled)
+ return -EINVAL;
+
+ ret = ps8622_set(ps8622->client, 0x01, 0xa7, brightness);
+
+ return ret;
+}
+
+static const struct backlight_ops ps8622_backlight_ops = {
+ .update_status = ps8622_backlight_update,
+};
+
+static void ps8622_pre_enable(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+ int ret;
+
+ if (ps8622->enabled)
+ return;
+
+ gpiod_set_value(ps8622->gpio_rst, 0);
+
+ if (ps8622->v12) {
+ ret = regulator_enable(ps8622->v12);
+ if (ret)
+ DRM_ERROR("fails to enable ps8622->v12");
+ }
+
+ if (drm_panel_prepare(ps8622->panel)) {
+ DRM_ERROR("failed to prepare panel\n");
+ return;
+ }
+
+ gpiod_set_value(ps8622->gpio_slp, 1);
+
+ /*
+ * T1 is the range of time that it takes for the power to rise after we
+ * enable the lcd/ps8622 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);
+
+ gpiod_set_value(ps8622->gpio_rst, 1);
+
+ /* wait 20ms after RST high */
+ usleep_range(20000, 30000);
+
+ ret = ps8622_send_config(ps8622);
+ if (ret) {
+ DRM_ERROR("Failed to send config to bridge (%d)\n", ret);
+ return;
+ }
+
+ ps8622->enabled = true;
+}
+
+static void ps8622_enable(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+
+ if (drm_panel_enable(ps8622->panel)) {
+ DRM_ERROR("failed to enable panel\n");
+ return;
+ }
+}
+
+static void ps8622_disable(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+
+ if (drm_panel_disable(ps8622->panel)) {
+ DRM_ERROR("failed to disable panel\n");
+ return;
+ }
+ msleep(PS8622_PWMO_END_T12_MS);
+}
+
+static void ps8622_post_disable(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+
+ if (!ps8622->enabled)
+ return;
+
+ ps8622->enabled = false;
+
+ /*
+ * 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.
+ */
+ gpiod_set_value(ps8622->gpio_slp, 0);
+
+ if (drm_panel_unprepare(ps8622->panel)) {
+ DRM_ERROR("failed to unprepare panel\n");
+ return;
+ }
+
+ if (ps8622->v12)
+ regulator_disable(ps8622->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);
+ gpiod_set_value(ps8622->gpio_rst, 0);
+
+ msleep(PS8622_POWER_OFF_T17_MS);
+}
+
+static int ps8622_get_modes(struct drm_connector *connector)
+{
+ struct ps8622_bridge *ps8622;
+
+ ps8622 = connector_to_ps8622(connector);
+
+ return drm_panel_get_modes(ps8622->panel);
+}
+
+static struct drm_encoder *ps8622_best_encoder(struct drm_connector *connector)
+{
+ struct ps8622_bridge *ps8622;
+
+ ps8622 = connector_to_ps8622(connector);
+
+ return ps8622->bridge.encoder;
+}
+
+static const struct drm_connector_helper_funcs ps8622_connector_helper_funcs = {
+ .get_modes = ps8622_get_modes,
+ .best_encoder = ps8622_best_encoder,
+};
+
+static enum drm_connector_status ps8622_detect(struct drm_connector *connector,
+ bool force)
+{
+ return connector_status_connected;
+}
+
+static void ps8622_connector_destroy(struct drm_connector *connector)
+{
+ drm_connector_cleanup(connector);
+}
+
+static const struct drm_connector_funcs ps8622_connector_funcs = {
+ .dpms = drm_helper_connector_dpms,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .detect = ps8622_detect,
+ .destroy = ps8622_connector_destroy,
+};
+
+int ps8622_attach(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+ int ret;
+
+ if (!bridge->encoder) {
+ DRM_ERROR("Parent encoder object not found");
+ return -ENODEV;
+ }
+
+ ps8622->connector.polled = DRM_CONNECTOR_POLL_HPD;
+ ret = drm_connector_init(bridge->dev, &ps8622->connector,
+ &ps8622_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
+ if (ret) {
+ DRM_ERROR("Failed to initialize connector with drm\n");
+ return ret;
+ }
+ drm_connector_helper_add(&ps8622->connector,
+ &ps8622_connector_helper_funcs);
+ drm_connector_register(&ps8622->connector);
+ drm_mode_connector_attach_encoder(&ps8622->connector,
+ bridge->encoder);
+
+ if (ps8622->panel)
+ drm_panel_attach(ps8622->panel, &ps8622->connector);
+
+ drm_helper_hpd_irq_event(ps8622->connector.dev);
+
+ return ret;
+}
+
+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,
+ .attach = ps8622_attach,
+};
+
+static const struct of_device_id ps8622_devices[] = {
+ {.compatible = "parade,ps8622",},
+ {.compatible = "parade,ps8625",},
+ {}
+};
+MODULE_DEVICE_TABLE(of, ps8622_devices);
+
+static int ps8622_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct device_node *endpoint, *panel_node;
+ struct ps8622_bridge *ps8622;
+ int ret;
+
+ ps8622 = devm_kzalloc(dev, sizeof(*ps8622), GFP_KERNEL);
+ if (!ps8622)
+ return -ENOMEM;
+
+ endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
+ if (endpoint) {
+ panel_node = of_graph_get_remote_port_parent(endpoint);
+ if (panel_node) {
+ ps8622->panel = of_drm_find_panel(panel_node);
+ of_node_put(panel_node);
+ if (!ps8622->panel)
+ return -EPROBE_DEFER;
+ }
+ }
+
+ ps8622->client = client;
+
+ ps8622->v12 = devm_regulator_get(dev, "vdd12");
+ if (IS_ERR(ps8622->v12)) {
+ dev_info(dev, "no 1.2v regulator found for PS8622\n");
+ ps8622->v12 = NULL;
+ }
+
+ ps8622->gpio_slp = devm_gpiod_get(dev, "sleep");
+ if (IS_ERR(ps8622->gpio_slp)) {
+ ret = PTR_ERR(ps8622->gpio_slp);
+ dev_err(dev, "cannot get gpio_slp %d\n", ret);
+ return ret;
+ }
+ ret = gpiod_direction_output(ps8622->gpio_slp, 1);
+ if (ret) {
+ dev_err(dev, "cannot configure gpio_slp\n");
+ return ret;
+ }
+
+ ps8622->gpio_rst = devm_gpiod_get(dev, "reset");
+ if (IS_ERR(ps8622->gpio_rst)) {
+ ret = PTR_ERR(ps8622->gpio_rst);
+ dev_err(dev, "cannot get gpio_rst %d\n", ret);
+ return ret;
+ }
+ /*
+ * Assert the reset pin high to avoid the bridge being
+ * initialized prematurely
+ */
+ ret = gpiod_direction_output(ps8622->gpio_rst, 1);
+ if (ret) {
+ dev_err(dev, "cannot configure gpio_rst\n");
+ return ret;
+ }
+
+ ps8622->max_lane_count = id->driver_data;
+
+ if (of_property_read_u32(dev->of_node, "lane-count",
+ &ps8622->lane_count)) {
+ ps8622->lane_count = ps8622->max_lane_count;
+ } else if (ps8622->lane_count > ps8622->max_lane_count) {
+ dev_info(dev, "lane-count property is too high,"
+ "using max_lane_count\n");
+ ps8622->lane_count = ps8622->max_lane_count;
+ }
+
+ if (!of_find_property(dev->of_node, "use-external-pwm", NULL)) {
+ ps8622->bl = backlight_device_register("ps8622-backlight",
+ dev, ps8622, &ps8622_backlight_ops,
+ NULL);
+ if (IS_ERR(ps8622->bl)) {
+ DRM_ERROR("failed to register backlight\n");
+ ret = PTR_ERR(ps8622->bl);
+ ps8622->bl = NULL;
+ return ret;
+ }
+ ps8622->bl->props.max_brightness = PS8622_MAX_BRIGHTNESS;
+ ps8622->bl->props.brightness = PS8622_MAX_BRIGHTNESS;
+ }
+
+ ps8622->bridge.funcs = &ps8622_bridge_funcs;
+ ps8622->bridge.of_node = dev->of_node;
+ ret = drm_bridge_add(&ps8622->bridge);
+ if (ret) {
+ DRM_ERROR("Failed to add bridge\n");
+ return ret;
+ }
+
+ i2c_set_clientdata(client, ps8622);
+
+ return 0;
+}
+
+static int ps8622_remove(struct i2c_client *client)
+{
+ struct ps8622_bridge *ps8622 = i2c_get_clientdata(client);
+
+ if (ps8622->bl)
+ backlight_device_unregister(ps8622->bl);
+
+ drm_bridge_remove(&ps8622->bridge);
+
+ return 0;
+}
+
+static const struct i2c_device_id ps8622_i2c_table[] = {
+ /* Device type, max_lane_count */
+ {"ps8622", 1},
+ {"ps8625", 2},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, ps8622_i2c_table);
+
+struct i2c_driver ps8622_driver = {
+ .id_table = ps8622_i2c_table,
+ .probe = ps8622_probe,
+ .remove = ps8622_remove,
+ .driver = {
+ .name = "ps8622",
+ .owner = THIS_MODULE,
+ .of_match_table = ps8622_devices,
+ },
+};
+module_i2c_driver(ps8622_driver);
+
+MODULE_AUTHOR("Vincent Palatin <vpalatin@chromium.org>");
+MODULE_DESCRIPTION("Parade ps8622/ps8625 eDP-LVDS converter driver");
+MODULE_LICENSE("GPL v2");
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 12/14] drm/bridge: Add i2c based driver for ps8622/ps8625 bridge
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
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>
---
drivers/gpu/drm/bridge/Kconfig | 9 +
drivers/gpu/drm/bridge/Makefile | 1 +
drivers/gpu/drm/bridge/ps8622.c | 684 +++++++++++++++++++++++++++++++++++++++
3 files changed, 694 insertions(+)
create mode 100644 drivers/gpu/drm/bridge/ps8622.c
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 8b426e2..d06eda3 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -6,3 +6,12 @@ config DRM_PTN3460
select DRM_PANEL
---help---
ptn3460 eDP-LVDS bridge chip driver.
+
+config DRM_PS8622
+ tristate "Parade eDP/LVDS bridge"
+ depends on OF && I2C
+ select DRM_PANEL
+ select BACKLIGHT_LCD_SUPPORT
+ select BACKLIGHT_CLASS_DEVICE
+ ---help---
+ parade eDP-LVDS bridge chip driver.
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index b4733e1..105da3e 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -1,3 +1,4 @@
ccflags-y := -Iinclude/drm
+obj-$(CONFIG_DRM_PS8622) += ps8622.o
obj-$(CONFIG_DRM_PTN3460) += ptn3460.o
diff --git a/drivers/gpu/drm/bridge/ps8622.c b/drivers/gpu/drm/bridge/ps8622.c
new file mode 100644
index 0000000..5474a39
--- /dev/null
+++ b/drivers/gpu/drm/bridge/ps8622.c
@@ -0,0 +1,684 @@
+/*
+ * 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/backlight.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.h>
+#include <linux/pm.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_panel.h>
+
+#include "drmP.h"
+#include "drm_crtc.h"
+#include "drm_crtc_helper.h"
+
+/* 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
+
+struct ps8622_bridge {
+ struct drm_connector connector;
+ struct i2c_client *client;
+ struct drm_bridge bridge;
+ struct drm_panel *panel;
+ struct regulator *v12;
+ struct backlight_device *bl;
+
+ struct gpio_desc *gpio_slp;
+ struct gpio_desc *gpio_rst;
+
+ u32 max_lane_count;
+ u32 lane_count;
+
+ bool enabled;
+};
+
+static inline struct ps8622_bridge *
+ bridge_to_ps8622(struct drm_bridge *bridge)
+{
+ return container_of(bridge, struct ps8622_bridge, bridge);
+}
+
+static inline struct ps8622_bridge *
+ connector_to_ps8622(struct drm_connector *connector)
+{
+ return container_of(connector, struct ps8622_bridge, connector);
+}
+
+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 *ps8622)
+{
+ struct i2c_client *cl = ps8622->client;
+ int err = 0;
+
+ /* HPD low */
+ err = ps8622_set(cl, 0x02, 0xa1, 0x01);
+ if (err)
+ goto error;
+
+ /* SW setting: [1:0] SW output 1.2V voltage is lower to 96% */
+ err = ps8622_set(cl, 0x04, 0x14, 0x01);
+ if (err)
+ goto error;
+
+ /* RCO SS setting: [5:4] = b01 0.5%, b10 1%, b11 1.5% */
+ err = ps8622_set(cl, 0x04, 0xe3, 0x20);
+ if (err)
+ goto error;
+
+ /* [7] RCO SS enable */
+ err = ps8622_set(cl, 0x04, 0xe2, 0x80);
+ if (err)
+ goto error;
+
+ /* RPHY Setting
+ * [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, 0x8a, 0x0c);
+ if (err)
+ goto error;
+
+ /* [3] RFD always on */
+ err = ps8622_set(cl, 0x04, 0x89, 0x08);
+ if (err)
+ goto error;
+
+ /* CTN lock in/out: 20000ppm/80000ppm. Lock out 2 times. */
+ err = ps8622_set(cl, 0x04, 0x71, 0x2d);
+ if (err)
+ goto error;
+
+ /* 2.7G CDR settings: NOF=40LSB for HBR CDR setting */
+ err = ps8622_set(cl, 0x04, 0x7d, 0x07);
+ if (err)
+ goto error;
+
+ /* [1:0] Fmin=+4bands */
+ err = ps8622_set(cl, 0x04, 0x7b, 0x00);
+ if (err)
+ goto error;
+
+ /* [7:5] DCO_FTRNG=+-40% */
+ err = ps8622_set(cl, 0x04, 0x7a, 0xfd);
+ if (err)
+ goto error;
+
+ /* 1.62G CDR settings: [5:2]NOF=64LSB [1:0]DCO scale is 2/5 */
+ err = ps8622_set(cl, 0x04, 0xc0, 0x12);
+ if (err)
+ goto error;
+
+ /* Gitune=-37% */
+ err = ps8622_set(cl, 0x04, 0xc1, 0x92);
+ if (err)
+ goto error;
+
+ /* Fbstep=100% */
+ err = ps8622_set(cl, 0x04, 0xc2, 0x1c);
+ if (err)
+ goto error;
+
+ /* [7] LOS signal disable */
+ err = ps8622_set(cl, 0x04, 0x32, 0x80);
+ if (err)
+ goto error;
+
+ /* RPIO Setting: [7:4] LVDS driver bias current : 75% (250mV swing) */
+ err = ps8622_set(cl, 0x04, 0x00, 0xb0);
+ if (err)
+ goto error;
+
+ /* [7:6] Right-bar GPIO output strength is 8mA */
+ err = ps8622_set(cl, 0x04, 0x15, 0x40);
+ if (err)
+ goto error;
+
+ /* EQ Training State Machine Setting, RCO calibration start */
+ err = ps8622_set(cl, 0x04, 0x54, 0x10);
+ if (err)
+ goto error;
+
+ /* Logic, needs more than 10 I2C command */
+ /* [4:0] MAX_LANE_COUNT set to max supported lanes */
+ err = ps8622_set(cl, 0x01, 0x02, 0x80 | ps8622->max_lane_count);
+ if (err)
+ goto error;
+
+ /* [4:0] LANE_COUNT_SET set to chosen lane count */
+ err = ps8622_set(cl, 0x01, 0x21, 0x80 | ps8622->lane_count);
+ if (err)
+ goto error;
+
+ err = ps8622_set(cl, 0x00, 0x52, 0x20);
+ if (err)
+ goto error;
+
+ /* HPD CP toggle enable */
+ err = ps8622_set(cl, 0x00, 0xf1, 0x03);
+ if (err)
+ goto error;
+
+ err = ps8622_set(cl, 0x00, 0x62, 0x41);
+ if (err)
+ goto error;
+
+ /* Counter number, add 1ms counter delay */
+ err = ps8622_set(cl, 0x00, 0xf6, 0x01);
+ if (err)
+ goto error;
+
+ /* [6]PWM function control by DPCD0040f[7], default is PWM block */
+ err = ps8622_set(cl, 0x00, 0x77, 0x06);
+ if (err)
+ goto error;
+
+ /* 04h Adjust VTotal toleranceto fix the 30Hz no display issue */
+ err = ps8622_set(cl, 0x00, 0x4c, 0x04);
+ if (err)
+ goto error;
+
+ /* DPCD00400='h00, Parade OUI ='h001cf8 */
+ err = ps8622_set(cl, 0x01, 0xc0, 0x00);
+ if (err)
+ goto error;
+
+ /* DPCD00401='h1c */
+ err = ps8622_set(cl, 0x01, 0xc1, 0x1c);
+ if (err)
+ goto error;
+
+ /* DPCD00402='hf8 */
+ err = ps8622_set(cl, 0x01, 0xc2, 0xf8);
+ if (err)
+ goto error;
+
+ /* DPCD403~408 = ASCII code, D2SLV5='h4432534c5635 */
+ err = ps8622_set(cl, 0x01, 0xc3, 0x44);
+ if (err)
+ goto error;
+
+ /* DPCD404 */
+ err = ps8622_set(cl, 0x01, 0xc4, 0x32);
+ if (err)
+ goto error;
+
+ /* DPCD405 */
+ err = ps8622_set(cl, 0x01, 0xc5, 0x53);
+ if (err)
+ goto error;
+
+ /* DPCD406 */
+ err = ps8622_set(cl, 0x01, 0xc6, 0x4c);
+ if (err)
+ goto error;
+
+ /* DPCD407 */
+ err = ps8622_set(cl, 0x01, 0xc7, 0x56);
+ if (err)
+ goto error;
+
+ /* DPCD408 */
+ err = ps8622_set(cl, 0x01, 0xc8, 0x35);
+ if (err)
+ goto error;
+
+ /* DPCD40A, Initial Code major revision '01' */
+ err = ps8622_set(cl, 0x01, 0xca, 0x01);
+ if (err)
+ goto error;
+
+ /* DPCD40B, Initial Code minor revision '05' */
+ err = ps8622_set(cl, 0x01, 0xcb, 0x05);
+ if (err)
+ goto error;
+
+
+ if (ps8622->bl) {
+ /* DPCD720, internal PWM */
+ err = ps8622_set(cl, 0x01, 0xa5, 0xa0);
+ if (err)
+ goto error;
+
+ /* FFh for 100% brightness, 0h for 0% brightness */
+ err = ps8622_set(cl, 0x01, 0xa7,
+ ps8622->bl->props.brightness);
+ if (err)
+ goto error;
+ } else {
+ /* DPCD720, external PWM */
+ err = ps8622_set(cl, 0x01, 0xa5, 0x80);
+ if (err)
+ goto error;
+ }
+
+ /* Set LVDS output as 6bit-VESA mapping, single LVDS channel */
+ err = ps8622_set(cl, 0x01, 0xcc, 0x13);
+ if (err)
+ goto error;
+
+ /* Enable SSC set by register */
+ err = ps8622_set(cl, 0x02, 0xb1, 0x20);
+ if (err)
+ goto error;
+
+ /* Set SSC enabled and +/-1% central spreading */
+ err = ps8622_set(cl, 0x04, 0x10, 0x16);
+ if (err)
+ goto error;
+
+ /* Logic end */
+ /* MPU Clock source: LC => RCO */
+ err = ps8622_set(cl, 0x04, 0x59, 0x60);
+ if (err)
+ goto error;
+
+ /* LC -> RCO */
+ err = ps8622_set(cl, 0x04, 0x54, 0x14);
+ if (err)
+ goto error;
+
+ /* HPD high */
+ err = ps8622_set(cl, 0x02, 0xa1, 0x91);
+
+error:
+ return err ? -EIO : 0;
+}
+
+static int ps8622_backlight_update(struct backlight_device *bl)
+{
+ struct ps8622_bridge *ps8622 = 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;
+
+ if (!ps8622->enabled)
+ return -EINVAL;
+
+ ret = ps8622_set(ps8622->client, 0x01, 0xa7, brightness);
+
+ return ret;
+}
+
+static const struct backlight_ops ps8622_backlight_ops = {
+ .update_status = ps8622_backlight_update,
+};
+
+static void ps8622_pre_enable(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+ int ret;
+
+ if (ps8622->enabled)
+ return;
+
+ gpiod_set_value(ps8622->gpio_rst, 0);
+
+ if (ps8622->v12) {
+ ret = regulator_enable(ps8622->v12);
+ if (ret)
+ DRM_ERROR("fails to enable ps8622->v12");
+ }
+
+ if (drm_panel_prepare(ps8622->panel)) {
+ DRM_ERROR("failed to prepare panel\n");
+ return;
+ }
+
+ gpiod_set_value(ps8622->gpio_slp, 1);
+
+ /*
+ * T1 is the range of time that it takes for the power to rise after we
+ * enable the lcd/ps8622 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);
+
+ gpiod_set_value(ps8622->gpio_rst, 1);
+
+ /* wait 20ms after RST high */
+ usleep_range(20000, 30000);
+
+ ret = ps8622_send_config(ps8622);
+ if (ret) {
+ DRM_ERROR("Failed to send config to bridge (%d)\n", ret);
+ return;
+ }
+
+ ps8622->enabled = true;
+}
+
+static void ps8622_enable(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+
+ if (drm_panel_enable(ps8622->panel)) {
+ DRM_ERROR("failed to enable panel\n");
+ return;
+ }
+}
+
+static void ps8622_disable(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+
+ if (drm_panel_disable(ps8622->panel)) {
+ DRM_ERROR("failed to disable panel\n");
+ return;
+ }
+ msleep(PS8622_PWMO_END_T12_MS);
+}
+
+static void ps8622_post_disable(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+
+ if (!ps8622->enabled)
+ return;
+
+ ps8622->enabled = false;
+
+ /*
+ * 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.
+ */
+ gpiod_set_value(ps8622->gpio_slp, 0);
+
+ if (drm_panel_unprepare(ps8622->panel)) {
+ DRM_ERROR("failed to unprepare panel\n");
+ return;
+ }
+
+ if (ps8622->v12)
+ regulator_disable(ps8622->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);
+ gpiod_set_value(ps8622->gpio_rst, 0);
+
+ msleep(PS8622_POWER_OFF_T17_MS);
+}
+
+static int ps8622_get_modes(struct drm_connector *connector)
+{
+ struct ps8622_bridge *ps8622;
+
+ ps8622 = connector_to_ps8622(connector);
+
+ return drm_panel_get_modes(ps8622->panel);
+}
+
+static struct drm_encoder *ps8622_best_encoder(struct drm_connector *connector)
+{
+ struct ps8622_bridge *ps8622;
+
+ ps8622 = connector_to_ps8622(connector);
+
+ return ps8622->bridge.encoder;
+}
+
+static const struct drm_connector_helper_funcs ps8622_connector_helper_funcs = {
+ .get_modes = ps8622_get_modes,
+ .best_encoder = ps8622_best_encoder,
+};
+
+static enum drm_connector_status ps8622_detect(struct drm_connector *connector,
+ bool force)
+{
+ return connector_status_connected;
+}
+
+static void ps8622_connector_destroy(struct drm_connector *connector)
+{
+ drm_connector_cleanup(connector);
+}
+
+static const struct drm_connector_funcs ps8622_connector_funcs = {
+ .dpms = drm_helper_connector_dpms,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .detect = ps8622_detect,
+ .destroy = ps8622_connector_destroy,
+};
+
+int ps8622_attach(struct drm_bridge *bridge)
+{
+ struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
+ int ret;
+
+ if (!bridge->encoder) {
+ DRM_ERROR("Parent encoder object not found");
+ return -ENODEV;
+ }
+
+ ps8622->connector.polled = DRM_CONNECTOR_POLL_HPD;
+ ret = drm_connector_init(bridge->dev, &ps8622->connector,
+ &ps8622_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
+ if (ret) {
+ DRM_ERROR("Failed to initialize connector with drm\n");
+ return ret;
+ }
+ drm_connector_helper_add(&ps8622->connector,
+ &ps8622_connector_helper_funcs);
+ drm_connector_register(&ps8622->connector);
+ drm_mode_connector_attach_encoder(&ps8622->connector,
+ bridge->encoder);
+
+ if (ps8622->panel)
+ drm_panel_attach(ps8622->panel, &ps8622->connector);
+
+ drm_helper_hpd_irq_event(ps8622->connector.dev);
+
+ return ret;
+}
+
+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,
+ .attach = ps8622_attach,
+};
+
+static const struct of_device_id ps8622_devices[] = {
+ {.compatible = "parade,ps8622",},
+ {.compatible = "parade,ps8625",},
+ {}
+};
+MODULE_DEVICE_TABLE(of, ps8622_devices);
+
+static int ps8622_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct device_node *endpoint, *panel_node;
+ struct ps8622_bridge *ps8622;
+ int ret;
+
+ ps8622 = devm_kzalloc(dev, sizeof(*ps8622), GFP_KERNEL);
+ if (!ps8622)
+ return -ENOMEM;
+
+ endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
+ if (endpoint) {
+ panel_node = of_graph_get_remote_port_parent(endpoint);
+ if (panel_node) {
+ ps8622->panel = of_drm_find_panel(panel_node);
+ of_node_put(panel_node);
+ if (!ps8622->panel)
+ return -EPROBE_DEFER;
+ }
+ }
+
+ ps8622->client = client;
+
+ ps8622->v12 = devm_regulator_get(dev, "vdd12");
+ if (IS_ERR(ps8622->v12)) {
+ dev_info(dev, "no 1.2v regulator found for PS8622\n");
+ ps8622->v12 = NULL;
+ }
+
+ ps8622->gpio_slp = devm_gpiod_get(dev, "sleep");
+ if (IS_ERR(ps8622->gpio_slp)) {
+ ret = PTR_ERR(ps8622->gpio_slp);
+ dev_err(dev, "cannot get gpio_slp %d\n", ret);
+ return ret;
+ }
+ ret = gpiod_direction_output(ps8622->gpio_slp, 1);
+ if (ret) {
+ dev_err(dev, "cannot configure gpio_slp\n");
+ return ret;
+ }
+
+ ps8622->gpio_rst = devm_gpiod_get(dev, "reset");
+ if (IS_ERR(ps8622->gpio_rst)) {
+ ret = PTR_ERR(ps8622->gpio_rst);
+ dev_err(dev, "cannot get gpio_rst %d\n", ret);
+ return ret;
+ }
+ /*
+ * Assert the reset pin high to avoid the bridge being
+ * initialized prematurely
+ */
+ ret = gpiod_direction_output(ps8622->gpio_rst, 1);
+ if (ret) {
+ dev_err(dev, "cannot configure gpio_rst\n");
+ return ret;
+ }
+
+ ps8622->max_lane_count = id->driver_data;
+
+ if (of_property_read_u32(dev->of_node, "lane-count",
+ &ps8622->lane_count)) {
+ ps8622->lane_count = ps8622->max_lane_count;
+ } else if (ps8622->lane_count > ps8622->max_lane_count) {
+ dev_info(dev, "lane-count property is too high,"
+ "using max_lane_count\n");
+ ps8622->lane_count = ps8622->max_lane_count;
+ }
+
+ if (!of_find_property(dev->of_node, "use-external-pwm", NULL)) {
+ ps8622->bl = backlight_device_register("ps8622-backlight",
+ dev, ps8622, &ps8622_backlight_ops,
+ NULL);
+ if (IS_ERR(ps8622->bl)) {
+ DRM_ERROR("failed to register backlight\n");
+ ret = PTR_ERR(ps8622->bl);
+ ps8622->bl = NULL;
+ return ret;
+ }
+ ps8622->bl->props.max_brightness = PS8622_MAX_BRIGHTNESS;
+ ps8622->bl->props.brightness = PS8622_MAX_BRIGHTNESS;
+ }
+
+ ps8622->bridge.funcs = &ps8622_bridge_funcs;
+ ps8622->bridge.of_node = dev->of_node;
+ ret = drm_bridge_add(&ps8622->bridge);
+ if (ret) {
+ DRM_ERROR("Failed to add bridge\n");
+ return ret;
+ }
+
+ i2c_set_clientdata(client, ps8622);
+
+ return 0;
+}
+
+static int ps8622_remove(struct i2c_client *client)
+{
+ struct ps8622_bridge *ps8622 = i2c_get_clientdata(client);
+
+ if (ps8622->bl)
+ backlight_device_unregister(ps8622->bl);
+
+ drm_bridge_remove(&ps8622->bridge);
+
+ return 0;
+}
+
+static const struct i2c_device_id ps8622_i2c_table[] = {
+ /* Device type, max_lane_count */
+ {"ps8622", 1},
+ {"ps8625", 2},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, ps8622_i2c_table);
+
+struct i2c_driver ps8622_driver = {
+ .id_table = ps8622_i2c_table,
+ .probe = ps8622_probe,
+ .remove = ps8622_remove,
+ .driver = {
+ .name = "ps8622",
+ .owner = THIS_MODULE,
+ .of_match_table = ps8622_devices,
+ },
+};
+module_i2c_driver(ps8622_driver);
+
+MODULE_AUTHOR("Vincent Palatin <vpalatin@chromium.org>");
+MODULE_DESCRIPTION("Parade ps8622/ps8625 eDP-LVDS converter driver");
+MODULE_LICENSE("GPL v2");
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 13/14] ARM: dts: snow: represent the connection between bridge and panel using videoport and endpoints
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Define videoports and use endpoints to describe the connection between
the encoder, bridge and the panel, instead of using phandles.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
arch/arm/boot/dts/exynos5250-snow.dts | 30 ++++++++++++++++++++++++++++--
1 file changed, 28 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
index e51fcef..877117f 100644
--- a/arch/arm/boot/dts/exynos5250-snow.dts
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -254,7 +254,20 @@
powerdown-gpios = <&gpy2 5 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpx1 5 GPIO_ACTIVE_HIGH>;
edid-emulation = <5>;
- panel = <&panel>;
+
+ ports {
+ port@0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+
+ port@1 {
+ bridge_in: endpoint {
+ remote-endpoint = <&dp_out>;
+ };
+ };
+ };
};
};
@@ -328,6 +341,12 @@
compatible = "auo,b116xw03";
power-supply = <&fet6>;
backlight = <&backlight>;
+
+ port {
+ panel_in: endpoint {
+ remote-endpoint = <&bridge_out>;
+ };
+ };
};
dp-controller@145B0000 {
@@ -341,7 +360,14 @@
samsung,link-rate = <0x0a>;
samsung,lane-count = <2>;
samsung,hpd-gpio = <&gpx0 7 0>;
- bridge = <&ptn3460>;
+
+ ports {
+ port@0 {
+ dp_out: endpoint {
+ remote-endpoint = <&bridge_in>;
+ };
+ };
+ };
};
};
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 13/14] ARM: dts: snow: represent the connection between bridge and panel using videoport and endpoints
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
Define videoports and use endpoints to describe the connection between
the encoder, bridge and the panel, instead of using phandles.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
arch/arm/boot/dts/exynos5250-snow.dts | 30 ++++++++++++++++++++++++++++--
1 file changed, 28 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
index e51fcef..877117f 100644
--- a/arch/arm/boot/dts/exynos5250-snow.dts
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -254,7 +254,20 @@
powerdown-gpios = <&gpy2 5 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpx1 5 GPIO_ACTIVE_HIGH>;
edid-emulation = <5>;
- panel = <&panel>;
+
+ ports {
+ port at 0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+
+ port at 1 {
+ bridge_in: endpoint {
+ remote-endpoint = <&dp_out>;
+ };
+ };
+ };
};
};
@@ -328,6 +341,12 @@
compatible = "auo,b116xw03";
power-supply = <&fet6>;
backlight = <&backlight>;
+
+ port {
+ panel_in: endpoint {
+ remote-endpoint = <&bridge_out>;
+ };
+ };
};
dp-controller at 145B0000 {
@@ -341,7 +360,14 @@
samsung,link-rate = <0x0a>;
samsung,lane-count = <2>;
samsung,hpd-gpio = <&gpx0 7 0>;
- bridge = <&ptn3460>;
+
+ ports {
+ port at 0 {
+ dp_out: endpoint {
+ remote-endpoint = <&bridge_in>;
+ };
+ };
+ };
};
};
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* [PATCH V8 14/14] ARM: dts: peach-pit: represent the connection between bridge and panel using videoport and endpoints
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-15 9:55 ` Ajay Kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc
Cc: inki.dae, kgene.kim, seanpaul, thierry.reding, daniel.vetter,
ajaynumb, bhushan.r, prashanth.g, Ajay Kumar
Define videoports and use endpoints to describe the connection between
the encoder, bridge and the panel, instead of using phandles.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
arch/arm/boot/dts/exynos5420-peach-pit.dts | 31 ++++++++++++++++++++++++++--
1 file changed, 29 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
index 82cdb74..9d06aef 100644
--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
@@ -107,6 +107,12 @@
compatible = "auo,b116xw03";
power-supply = <&tps65090_fet6>;
backlight = <&backlight>;
+
+ port {
+ panel_in: endpoint {
+ remote-endpoint = <&bridge_out>;
+ };
+ };
};
};
@@ -126,7 +132,14 @@
samsung,link-rate = <0x06>;
samsung,lane-count = <2>;
samsung,hpd-gpio = <&gpx2 6 0>;
- bridge = <&ps8625>;
+
+ ports {
+ port@0 {
+ dp_out: endpoint {
+ remote-endpoint = <&bridge_in>;
+ };
+ };
+ };
};
&fimd {
@@ -504,8 +517,22 @@
sleep-gpios = <&gpx3 5 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpy7 7 GPIO_ACTIVE_HIGH>;
lane-count = <2>;
- panel = <&panel>;
use-external-pwm;
+
+ ports {
+ port@0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+
+ port@1 {
+ bridge_in: endpoint {
+ remote-endpoint = <&dp_out>;
+ };
+ };
+ };
+
};
};
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread* [PATCH V8 14/14] ARM: dts: peach-pit: represent the connection between bridge and panel using videoport and endpoints
@ 2014-11-15 9:55 ` Ajay Kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay Kumar @ 2014-11-15 9:55 UTC (permalink / raw)
To: linux-arm-kernel
Define videoports and use endpoints to describe the connection between
the encoder, bridge and the panel, instead of using phandles.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
---
arch/arm/boot/dts/exynos5420-peach-pit.dts | 31 ++++++++++++++++++++++++++--
1 file changed, 29 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
index 82cdb74..9d06aef 100644
--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
@@ -107,6 +107,12 @@
compatible = "auo,b116xw03";
power-supply = <&tps65090_fet6>;
backlight = <&backlight>;
+
+ port {
+ panel_in: endpoint {
+ remote-endpoint = <&bridge_out>;
+ };
+ };
};
};
@@ -126,7 +132,14 @@
samsung,link-rate = <0x06>;
samsung,lane-count = <2>;
samsung,hpd-gpio = <&gpx2 6 0>;
- bridge = <&ps8625>;
+
+ ports {
+ port at 0 {
+ dp_out: endpoint {
+ remote-endpoint = <&bridge_in>;
+ };
+ };
+ };
};
&fimd {
@@ -504,8 +517,22 @@
sleep-gpios = <&gpx3 5 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpy7 7 GPIO_ACTIVE_HIGH>;
lane-count = <2>;
- panel = <&panel>;
use-external-pwm;
+
+ ports {
+ port at 0 {
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+
+ port at 1 {
+ bridge_in: endpoint {
+ remote-endpoint = <&dp_out>;
+ };
+ };
+ };
+
};
};
--
1.7.9.5
^ permalink raw reply related [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-15 9:54 ` Ajay Kumar
@ 2014-11-18 6:20 ` Ajay kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2014-11-18 6:20 UTC (permalink / raw)
To: Javier Martinez Canillas, Tomi Valkeinen, Laurent Pinchart
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
dri-devel, Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G,
Ajay Kumar, linux-arm-kernel
On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> This series is based on master branch of Linus tree at:
> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>
> 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
>
> Changes since V4:
> -- Use gpiod interface for panel-lvds and ps8622 drivers.
> -- Address comments from Javier.
> -- Fix compilation issues when PANEL_BINDER is selected as module.
> -- Split Documentation patches from driver patches.
> -- Rebase on top of the tree.
>
> Changes since V5:
> -- Modify bridge drivers to support driver model.
> -- Drop the concept of bridge chain(sincle there are no 2 real bridges)
> Hence drop bridge-panel_binder layer.
> -- Drop panel-lvds driver and accomodate the required changes in
> panel-simple driver.
> -- Use gpiod interface in ptn3460 driver.
> -- Address all comments by Thierry Reding for V5 series.
> -- Address comments from Sean Paul for exynos_dp_commit issue.
>
> Changes since V6:
> -- Panel patches were seperated and they are merged already.
> -- Fix few issues with ptn3460, before modifying the bridge core.
> -- Modify drm_bridge as per Thierry's comments for V6 series.
> -- Add drm_bridge changes minimally without breaking existing code.
> -- Add new features for ptn3460, step-by-step.
> -- Address comments from Thierry and Andreas for ptn3460 and ps8622.
> -- Split documentation patches from driver patches.
>
> Changes since V7:
> -- Address comments from Tomi and Laurent:
> -- Use videoports and endpoints to represent the connection between
> encoder, bridge and the panel, instead of using phandles.
> -- Address comments from Daniel:
> -- Make the patch description more descriptive.
> -- remove device pointer from drm_bridge, and just use
> device_node instead.
> -- don't pass encoder pointer to bridge_attach.
> -- Address comments from Sean Paul:
> -- Remove bridge from mode_config, and pull out drm_bridge
> functions from drm_crtc.c to drm_bridge.c
>
> Note: This patchset creates the following Kconfig ambiguity.
> Any pointers to fix the same are welcome.
>
> drivers/video/fbdev/Kconfig:5:error: recursive dependency detected!
> drivers/video/fbdev/Kconfig:5: symbol FB is selected by DRM_KMS_FB_HELPER
> drivers/gpu/drm/Kconfig:34: symbol DRM_KMS_FB_HELPER depends on DRM_KMS_HELPER
> drivers/gpu/drm/Kconfig:28: symbol DRM_KMS_HELPER is selected by DRM_PTN3460
> drivers/gpu/drm/bridge/Kconfig:1: symbol DRM_PTN3460 depends on I2C
> drivers/i2c/Kconfig:7: symbol I2C is selected by FB_DDC
> drivers/video/fbdev/Kconfig:59: symbol FB_DDC is selected by FB_CYBER2000_DDC
> drivers/video/fbdev/Kconfig:374: symbol FB_CYBER2000_DDC depends on FB_CYBER2000
> drivers/video/fbdev/Kconfig:362: symbol FB_CYBER2000 depends on FB
>
> Ajay Kumar (13):
> [PATCH V8 1/14] drm/bridge: ptn3460: Few trivial cleanups
> [PATCH V8 2/14] drm/bridge: do not pass drm_bridge_funcs to drm_bridge_init
> [PATCH V8 3/14] drm/bridge: make bridge registration independent of drm flow
> [PATCH V8 4/14] drm/bridge: ptn3460: Convert to i2c driver model
> [PATCH V8 5/14] drm/exynos: dp: support drm_bridge
> [PATCH V8 6/14] drm/bridge: ptn3460: support drm_panel
> [PATCH V8 7/14] drm/bridge: ptn3460: probe connector at the end of bridge attach
> [PATCH V8 8/14] drm/bridge: ptn3460: use gpiod interface
> [PATCH V8 9/14] Documentation: drm: bridge: move to video/bridge
> [PATCH V8 10/14] Documentation: devicetree: Add vendor prefix for parade
> [PATCH V8 11/14] Documentation: bridge: Add documentation for ps8622 DT properties
> [PATCH V8 13/14] ARM: dts: snow: represent the connection between bridge and panel
> using videoport and endpoints
> [PATCH V8 14/14] ARM: dts: peach-pit: represent the connection between bridge and
> panel using videoport and endpoints
>
> Vincent Palatin (1):
> [PATCH V8 12/14] drm/bridge: Add i2c based driver for ps8622/ps8625 bridge
>
> .../devicetree/bindings/drm/bridge/ptn3460.txt | 27 -
> .../devicetree/bindings/vendor-prefixes.txt | 1 +
> .../devicetree/bindings/video/bridge/ps8622.txt | 31 +
> .../devicetree/bindings/video/bridge/ptn3460.txt | 39 ++
> .../devicetree/bindings/video/exynos_dp.txt | 12 +
> arch/arm/boot/dts/exynos5250-snow.dts | 30 +-
> arch/arm/boot/dts/exynos5420-peach-pit.dts | 31 +-
> drivers/gpu/drm/Makefile | 2 +-
> drivers/gpu/drm/bridge/Kconfig | 12 +
> drivers/gpu/drm/bridge/Makefile | 1 +
> drivers/gpu/drm/bridge/ps8622.c | 684 ++++++++++++++++++++
> drivers/gpu/drm/bridge/ptn3460.c | 310 +++++----
> drivers/gpu/drm/drm_bridge.c | 91 +++
> drivers/gpu/drm/drm_crtc.c | 68 --
> drivers/gpu/drm/exynos/exynos_dp_core.c | 53 +-
> drivers/gpu/drm/exynos/exynos_dp_core.h | 1 +
> drivers/gpu/drm/msm/hdmi/hdmi.c | 7 +-
> drivers/gpu/drm/msm/hdmi/hdmi.h | 1 +
> drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 8 +-
> drivers/gpu/drm/sti/sti_hda.c | 11 +-
> drivers/gpu/drm/sti/sti_hdmi.c | 11 +-
> include/drm/bridge/ptn3460.h | 8 +
> include/drm/drm_crtc.h | 27 +-
> 23 files changed, 1184 insertions(+), 282 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
> create mode 100644 Documentation/devicetree/bindings/video/bridge/ps8622.txt
> create mode 100644 Documentation/devicetree/bindings/video/bridge/ptn3460.txt
> create mode 100644 drivers/gpu/drm/bridge/ps8622.c
> create mode 100644 drivers/gpu/drm/drm_bridge.c
>
> --
> 1.7.9.5
>
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-18 6:20 ` Ajay kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2014-11-18 6:20 UTC (permalink / raw)
To: linux-arm-kernel
On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> This series is based on master branch of Linus tree at:
> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>
> 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
>
> Changes since V4:
> -- Use gpiod interface for panel-lvds and ps8622 drivers.
> -- Address comments from Javier.
> -- Fix compilation issues when PANEL_BINDER is selected as module.
> -- Split Documentation patches from driver patches.
> -- Rebase on top of the tree.
>
> Changes since V5:
> -- Modify bridge drivers to support driver model.
> -- Drop the concept of bridge chain(sincle there are no 2 real bridges)
> Hence drop bridge-panel_binder layer.
> -- Drop panel-lvds driver and accomodate the required changes in
> panel-simple driver.
> -- Use gpiod interface in ptn3460 driver.
> -- Address all comments by Thierry Reding for V5 series.
> -- Address comments from Sean Paul for exynos_dp_commit issue.
>
> Changes since V6:
> -- Panel patches were seperated and they are merged already.
> -- Fix few issues with ptn3460, before modifying the bridge core.
> -- Modify drm_bridge as per Thierry's comments for V6 series.
> -- Add drm_bridge changes minimally without breaking existing code.
> -- Add new features for ptn3460, step-by-step.
> -- Address comments from Thierry and Andreas for ptn3460 and ps8622.
> -- Split documentation patches from driver patches.
>
> Changes since V7:
> -- Address comments from Tomi and Laurent:
> -- Use videoports and endpoints to represent the connection between
> encoder, bridge and the panel, instead of using phandles.
> -- Address comments from Daniel:
> -- Make the patch description more descriptive.
> -- remove device pointer from drm_bridge, and just use
> device_node instead.
> -- don't pass encoder pointer to bridge_attach.
> -- Address comments from Sean Paul:
> -- Remove bridge from mode_config, and pull out drm_bridge
> functions from drm_crtc.c to drm_bridge.c
>
> Note: This patchset creates the following Kconfig ambiguity.
> Any pointers to fix the same are welcome.
>
> drivers/video/fbdev/Kconfig:5:error: recursive dependency detected!
> drivers/video/fbdev/Kconfig:5: symbol FB is selected by DRM_KMS_FB_HELPER
> drivers/gpu/drm/Kconfig:34: symbol DRM_KMS_FB_HELPER depends on DRM_KMS_HELPER
> drivers/gpu/drm/Kconfig:28: symbol DRM_KMS_HELPER is selected by DRM_PTN3460
> drivers/gpu/drm/bridge/Kconfig:1: symbol DRM_PTN3460 depends on I2C
> drivers/i2c/Kconfig:7: symbol I2C is selected by FB_DDC
> drivers/video/fbdev/Kconfig:59: symbol FB_DDC is selected by FB_CYBER2000_DDC
> drivers/video/fbdev/Kconfig:374: symbol FB_CYBER2000_DDC depends on FB_CYBER2000
> drivers/video/fbdev/Kconfig:362: symbol FB_CYBER2000 depends on FB
>
> Ajay Kumar (13):
> [PATCH V8 1/14] drm/bridge: ptn3460: Few trivial cleanups
> [PATCH V8 2/14] drm/bridge: do not pass drm_bridge_funcs to drm_bridge_init
> [PATCH V8 3/14] drm/bridge: make bridge registration independent of drm flow
> [PATCH V8 4/14] drm/bridge: ptn3460: Convert to i2c driver model
> [PATCH V8 5/14] drm/exynos: dp: support drm_bridge
> [PATCH V8 6/14] drm/bridge: ptn3460: support drm_panel
> [PATCH V8 7/14] drm/bridge: ptn3460: probe connector at the end of bridge attach
> [PATCH V8 8/14] drm/bridge: ptn3460: use gpiod interface
> [PATCH V8 9/14] Documentation: drm: bridge: move to video/bridge
> [PATCH V8 10/14] Documentation: devicetree: Add vendor prefix for parade
> [PATCH V8 11/14] Documentation: bridge: Add documentation for ps8622 DT properties
> [PATCH V8 13/14] ARM: dts: snow: represent the connection between bridge and panel
> using videoport and endpoints
> [PATCH V8 14/14] ARM: dts: peach-pit: represent the connection between bridge and
> panel using videoport and endpoints
>
> Vincent Palatin (1):
> [PATCH V8 12/14] drm/bridge: Add i2c based driver for ps8622/ps8625 bridge
>
> .../devicetree/bindings/drm/bridge/ptn3460.txt | 27 -
> .../devicetree/bindings/vendor-prefixes.txt | 1 +
> .../devicetree/bindings/video/bridge/ps8622.txt | 31 +
> .../devicetree/bindings/video/bridge/ptn3460.txt | 39 ++
> .../devicetree/bindings/video/exynos_dp.txt | 12 +
> arch/arm/boot/dts/exynos5250-snow.dts | 30 +-
> arch/arm/boot/dts/exynos5420-peach-pit.dts | 31 +-
> drivers/gpu/drm/Makefile | 2 +-
> drivers/gpu/drm/bridge/Kconfig | 12 +
> drivers/gpu/drm/bridge/Makefile | 1 +
> drivers/gpu/drm/bridge/ps8622.c | 684 ++++++++++++++++++++
> drivers/gpu/drm/bridge/ptn3460.c | 310 +++++----
> drivers/gpu/drm/drm_bridge.c | 91 +++
> drivers/gpu/drm/drm_crtc.c | 68 --
> drivers/gpu/drm/exynos/exynos_dp_core.c | 53 +-
> drivers/gpu/drm/exynos/exynos_dp_core.h | 1 +
> drivers/gpu/drm/msm/hdmi/hdmi.c | 7 +-
> drivers/gpu/drm/msm/hdmi/hdmi.h | 1 +
> drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 8 +-
> drivers/gpu/drm/sti/sti_hda.c | 11 +-
> drivers/gpu/drm/sti/sti_hdmi.c | 11 +-
> include/drm/bridge/ptn3460.h | 8 +
> include/drm/drm_crtc.h | 27 +-
> 23 files changed, 1184 insertions(+), 282 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/drm/bridge/ptn3460.txt
> create mode 100644 Documentation/devicetree/bindings/video/bridge/ps8622.txt
> create mode 100644 Documentation/devicetree/bindings/video/bridge/ptn3460.txt
> create mode 100644 drivers/gpu/drm/bridge/ps8622.c
> create mode 100644 drivers/gpu/drm/drm_bridge.c
>
> --
> 1.7.9.5
>
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-18 6:20 ` Ajay kumar
@ 2014-11-19 9:35 ` Javier Martinez Canillas
-1 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-11-19 9:35 UTC (permalink / raw)
To: Ajay kumar, Tomi Valkeinen, Laurent Pinchart
Cc: Ajay Kumar, dri-devel, linux-arm-kernel, devicetree,
linux-samsung-soc, InKi Dae, Kukjin Kim, Sean Paul,
Thierry Reding, Daniel Vetter, Pannaga Bhushan Reddy Patel,
Prashanth G, gustavo Padovan
Hello Ajay,
On 11/18/2014 07:20 AM, Ajay kumar wrote:
> On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> This series is based on master branch of Linus tree at:
>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
I applied your series on top of 3.18-rc5 + linux-next's commit:
0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support").
I think you should had mentioned what other patches are needed as a
dependency since I spent quite a bit of time figuring out why the
ps8622 bridge driver probe was always deferred due of_drm_find_panel()
failing and then I noticed that a patch from linux-next was needed:
e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
With that commit the ps8622 drm bridge driver probe succeed but I still
don't have display working on an Exynos5240 Peach Pit, the kernel log shows:
platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops): -517
exynos-drm exynos-drm: master bind failed: -517
platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
Any idea what else I could be missing here?
Your patches don't apply cleanly in linux-next btw, although the are many
issues with the Exynos DRM currently in linux-next anyways so probably using
3.18-rc as a base makes more sense for now until all those things get fixed
but you should rebase so they can be picked.
Best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-19 9:35 ` Javier Martinez Canillas
0 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-11-19 9:35 UTC (permalink / raw)
To: linux-arm-kernel
Hello Ajay,
On 11/18/2014 07:20 AM, Ajay kumar wrote:
> On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> This series is based on master branch of Linus tree at:
>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
I applied your series on top of 3.18-rc5 + linux-next's commit:
0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support").
I think you should had mentioned what other patches are needed as a
dependency since I spent quite a bit of time figuring out why the
ps8622 bridge driver probe was always deferred due of_drm_find_panel()
failing and then I noticed that a patch from linux-next was needed:
e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
With that commit the ps8622 drm bridge driver probe succeed but I still
don't have display working on an Exynos5240 Peach Pit, the kernel log shows:
platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops): -517
exynos-drm exynos-drm: master bind failed: -517
platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
Any idea what else I could be missing here?
Your patches don't apply cleanly in linux-next btw, although the are many
issues with the Exynos DRM currently in linux-next anyways so probably using
3.18-rc as a base makes more sense for now until all those things get fixed
but you should rebase so they can be picked.
Best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-19 9:35 ` Javier Martinez Canillas
@ 2014-11-19 9:38 ` Ajay kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2014-11-19 9:38 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: devicetree, linux-samsung-soc, Sean Paul, gustavo Padovan,
Daniel Vetter, dri-devel, Tomi Valkeinen, Laurent Pinchart,
Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G, Ajay Kumar,
linux-arm-kernel
Hi Javier,
In the cover letter, I have mentioned that it is tested on Linus tree:
"This series is based on master branch of Linus tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git"
Kindly test the patches with that.
Ajay
On Wed, Nov 19, 2014 at 3:05 PM, Javier Martinez Canillas
<javier.martinez@collabora.co.uk> wrote:
> Hello Ajay,
>
> On 11/18/2014 07:20 AM, Ajay kumar wrote:
>> On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>>> This series is based on master branch of Linus tree at:
>>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>
> I applied your series on top of 3.18-rc5 + linux-next's commit:
>
> 0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support").
>
> I think you should had mentioned what other patches are needed as a
> dependency since I spent quite a bit of time figuring out why the
> ps8622 bridge driver probe was always deferred due of_drm_find_panel()
> failing and then I noticed that a patch from linux-next was needed:
>
> e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
>
> With that commit the ps8622 drm bridge driver probe succeed but I still
> don't have display working on an Exynos5240 Peach Pit, the kernel log shows:
>
> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
> exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
> exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops): -517
> exynos-drm exynos-drm: master bind failed: -517
> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
>
> Any idea what else I could be missing here?
>
> Your patches don't apply cleanly in linux-next btw, although the are many
> issues with the Exynos DRM currently in linux-next anyways so probably using
> 3.18-rc as a base makes more sense for now until all those things get fixed
> but you should rebase so they can be picked.
>
> Best regards,
> Javier
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 86+ messages in thread* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-19 9:38 ` Ajay kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2014-11-19 9:38 UTC (permalink / raw)
To: linux-arm-kernel
Hi Javier,
In the cover letter, I have mentioned that it is tested on Linus tree:
"This series is based on master branch of Linus tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git"
Kindly test the patches with that.
Ajay
On Wed, Nov 19, 2014 at 3:05 PM, Javier Martinez Canillas
<javier.martinez@collabora.co.uk> wrote:
> Hello Ajay,
>
> On 11/18/2014 07:20 AM, Ajay kumar wrote:
>> On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>>> This series is based on master branch of Linus tree at:
>>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>
> I applied your series on top of 3.18-rc5 + linux-next's commit:
>
> 0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support").
>
> I think you should had mentioned what other patches are needed as a
> dependency since I spent quite a bit of time figuring out why the
> ps8622 bridge driver probe was always deferred due of_drm_find_panel()
> failing and then I noticed that a patch from linux-next was needed:
>
> e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
>
> With that commit the ps8622 drm bridge driver probe succeed but I still
> don't have display working on an Exynos5240 Peach Pit, the kernel log shows:
>
> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
> exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
> exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops): -517
> exynos-drm exynos-drm: master bind failed: -517
> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
>
> Any idea what else I could be missing here?
>
> Your patches don't apply cleanly in linux-next btw, although the are many
> issues with the Exynos DRM currently in linux-next anyways so probably using
> 3.18-rc as a base makes more sense for now until all those things get fixed
> but you should rebase so they can be picked.
>
> Best regards,
> Javier
^ permalink raw reply [flat|nested] 86+ messages in thread* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-19 9:38 ` Ajay kumar
@ 2014-11-19 9:51 ` Javier Martinez Canillas
-1 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-11-19 9:51 UTC (permalink / raw)
To: Ajay kumar
Cc: Tomi Valkeinen, Laurent Pinchart, Ajay Kumar, dri-devel,
linux-arm-kernel, devicetree, linux-samsung-soc, InKi Dae,
Kukjin Kim, Sean Paul, Thierry Reding, Daniel Vetter,
Pannaga Bhushan Reddy Patel, Prashanth G, gustavo Padovan
Hello Ajay,
On 11/19/2014 10:38 AM, Ajay kumar wrote:
> Hi Javier,
>
> In the cover letter, I have mentioned that it is tested on Linus tree:
>
> "This series is based on master branch of Linus tree at:
> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git"
>
> Kindly test the patches with that.
>
That's what I did... Linus' master branch is a moving target and if you
look at his current HEAD, it is commit fc14f9c1 ("Linux 3.18-rc5") but
as I said before, at least two patches that are needed didn't land in
Linus' tree yet. These are:
0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support")
e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
IOW, linux.git master branch + this series is not enough to have display
working AFAICT so I was wondering if I'm missing something else.
Do you have a public tree somewhere with the branch you are using to test?
Best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-19 9:51 ` Javier Martinez Canillas
0 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-11-19 9:51 UTC (permalink / raw)
To: linux-arm-kernel
Hello Ajay,
On 11/19/2014 10:38 AM, Ajay kumar wrote:
> Hi Javier,
>
> In the cover letter, I have mentioned that it is tested on Linus tree:
>
> "This series is based on master branch of Linus tree at:
> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git"
>
> Kindly test the patches with that.
>
That's what I did... Linus' master branch is a moving target and if you
look at his current HEAD, it is commit fc14f9c1 ("Linux 3.18-rc5") but
as I said before, at least two patches that are needed didn't land in
Linus' tree yet. These are:
0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support")
e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
IOW, linux.git master branch + this series is not enough to have display
working AFAICT so I was wondering if I'm missing something else.
Do you have a public tree somewhere with the branch you are using to test?
Best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-19 9:35 ` Javier Martinez Canillas
@ 2014-11-19 10:55 ` Paolo Pisati
-1 siblings, 0 replies; 86+ messages in thread
From: Paolo Pisati @ 2014-11-19 10:55 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: Ajay kumar, Tomi Valkeinen, Laurent Pinchart, Ajay Kumar,
dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc,
InKi Dae, Kukjin Kim, Sean Paul, Thierry Reding, Daniel Vetter,
Pannaga Bhushan Reddy Patel, Prashanth G, gustavo Padovan
On Wed, Nov 19, 2014 at 10:35:40AM +0100, Javier Martinez Canillas wrote:
> Hello Ajay,
>
> On 11/18/2014 07:20 AM, Ajay kumar wrote:
> > On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> >> This series is based on master branch of Linus tree at:
> >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>
> I applied your series on top of 3.18-rc5 + linux-next's commit:
>
> 0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support").
>
> I think you should had mentioned what other patches are needed as a
> dependency since I spent quite a bit of time figuring out why the
> ps8622 bridge driver probe was always deferred due of_drm_find_panel()
> failing and then I noticed that a patch from linux-next was needed:
>
> e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
>
> With that commit the ps8622 drm bridge driver probe succeed but I still
> don't have display working on an Exynos5240 Peach Pit, the kernel log shows:
>
> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
> exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
> exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops): -517
> exynos-drm exynos-drm: master bind failed: -517
> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
do you have this in your dmesg?
...
exynos-dp-video-phy 10040728.video-phy: Failed to lookup PMU regmap
...
to get a working framebuffer out of linus 318rc4 on my peach pi, i had
to cherry pick these 3 patches:
arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy
drm/exynos: dp: Remove support for unused dptx-phy
ARM: exynos_defconfig: Enable options for display panel support
Check if you have those.
--
bye,
p.
^ permalink raw reply [flat|nested] 86+ messages in thread* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-19 10:55 ` Paolo Pisati
0 siblings, 0 replies; 86+ messages in thread
From: Paolo Pisati @ 2014-11-19 10:55 UTC (permalink / raw)
To: linux-arm-kernel
On Wed, Nov 19, 2014 at 10:35:40AM +0100, Javier Martinez Canillas wrote:
> Hello Ajay,
>
> On 11/18/2014 07:20 AM, Ajay kumar wrote:
> > On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
> >> This series is based on master branch of Linus tree at:
> >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>
> I applied your series on top of 3.18-rc5 + linux-next's commit:
>
> 0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support").
>
> I think you should had mentioned what other patches are needed as a
> dependency since I spent quite a bit of time figuring out why the
> ps8622 bridge driver probe was always deferred due of_drm_find_panel()
> failing and then I noticed that a patch from linux-next was needed:
>
> e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
>
> With that commit the ps8622 drm bridge driver probe succeed but I still
> don't have display working on an Exynos5240 Peach Pit, the kernel log shows:
>
> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
> exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
> exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops): -517
> exynos-drm exynos-drm: master bind failed: -517
> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
do you have this in your dmesg?
...
exynos-dp-video-phy 10040728.video-phy: Failed to lookup PMU regmap
...
to get a working framebuffer out of linus 318rc4 on my peach pi, i had
to cherry pick these 3 patches:
arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy
drm/exynos: dp: Remove support for unused dptx-phy
ARM: exynos_defconfig: Enable options for display panel support
Check if you have those.
--
bye,
p.
^ permalink raw reply [flat|nested] 86+ messages in thread* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-19 10:55 ` Paolo Pisati
@ 2014-11-19 11:20 ` Javier Martinez Canillas
-1 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-11-19 11:20 UTC (permalink / raw)
To: Paolo Pisati
Cc: Ajay kumar, Tomi Valkeinen, Laurent Pinchart, Ajay Kumar,
dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc,
InKi Dae, Kukjin Kim, Sean Paul, Thierry Reding, Daniel Vetter,
Pannaga Bhushan Reddy Patel, Prashanth G, gustavo Padovan
Hello Paolo,
On 11/19/2014 11:55 AM, Paolo Pisati wrote:
> to get a working framebuffer out of linus 318rc4 on my peach pi, i had
> to cherry pick these 3 patches:
>
> arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy
I was missing this patch, I've display working now. Thanks for the pointer!
If someone else is interested, I've pushed a branch [0] with 3.18-rc5 + all
the needed patches.
Ajay, feel free to add to your series:
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Best regards,
Javier
[0]: git://git.collabora.co.uk/git/user/javier/linux.git wip/exynos/dp-integ
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-19 11:20 ` Javier Martinez Canillas
0 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-11-19 11:20 UTC (permalink / raw)
To: linux-arm-kernel
Hello Paolo,
On 11/19/2014 11:55 AM, Paolo Pisati wrote:
> to get a working framebuffer out of linus 318rc4 on my peach pi, i had
> to cherry pick these 3 patches:
>
> arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy
I was missing this patch, I've display working now. Thanks for the pointer!
If someone else is interested, I've pushed a branch [0] with 3.18-rc5 + all
the needed patches.
Ajay, feel free to add to your series:
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Best regards,
Javier
[0]: git://git.collabora.co.uk/git/user/javier/linux.git wip/exynos/dp-integ
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-19 11:20 ` Javier Martinez Canillas
@ 2014-11-19 16:22 ` Paolo Pisati
-1 siblings, 0 replies; 86+ messages in thread
From: Paolo Pisati @ 2014-11-19 16:22 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: Paolo Pisati, Ajay kumar, Tomi Valkeinen, Laurent Pinchart,
Ajay Kumar, dri-devel, linux-arm-kernel, devicetree,
linux-samsung-soc, InKi Dae, Kukjin Kim, Sean Paul,
Thierry Reding, Daniel Vetter, Pannaga Bhushan Reddy Patel,
Prashanth G, gustavo Padovan
On Wed, Nov 19, 2014 at 12:20:53PM +0100, Javier Martinez Canillas wrote:
>
> If someone else is interested, I've pushed a branch [0] with 3.18-rc5 + all
> the needed patches.
>
> Ajay, feel free to add to your series:
>
> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>
> Best regards,
> Javier
>
> [0]: git://git.collabora.co.uk/git/user/javier/linux.git wip/exynos/dp-integ
doesn't peach pi require the same dts modification as peach pit/snow?
--
bye,
p.
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-19 16:22 ` Paolo Pisati
0 siblings, 0 replies; 86+ messages in thread
From: Paolo Pisati @ 2014-11-19 16:22 UTC (permalink / raw)
To: linux-arm-kernel
On Wed, Nov 19, 2014 at 12:20:53PM +0100, Javier Martinez Canillas wrote:
>
> If someone else is interested, I've pushed a branch [0] with 3.18-rc5 + all
> the needed patches.
>
> Ajay, feel free to add to your series:
>
> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>
> Best regards,
> Javier
>
> [0]: git://git.collabora.co.uk/git/user/javier/linux.git wip/exynos/dp-integ
doesn't peach pi require the same dts modification as peach pit/snow?
--
bye,
p.
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-19 16:22 ` Paolo Pisati
@ 2014-11-19 16:28 ` Javier Martinez Canillas
-1 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-11-19 16:28 UTC (permalink / raw)
To: Paolo Pisati
Cc: Ajay kumar, Tomi Valkeinen, Laurent Pinchart, Ajay Kumar,
dri-devel, linux-arm-kernel, devicetree, linux-samsung-soc,
InKi Dae, Kukjin Kim, Sean Paul, Thierry Reding, Daniel Vetter,
Pannaga Bhushan Reddy Patel, Prashanth G, gustavo Padovan
Hello Paolo,
On 11/19/2014 05:22 PM, Paolo Pisati wrote:
> On Wed, Nov 19, 2014 at 12:20:53PM +0100, Javier Martinez Canillas wrote:
>>
>> If someone else is interested, I've pushed a branch [0] with 3.18-rc5 + all
>> the needed patches.
>>
>> Ajay, feel free to add to your series:
>>
>> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>>
>> Best regards,
>> Javier
>>
>> [0]: git://git.collabora.co.uk/git/user/javier/linux.git wip/exynos/dp-integ
>
> doesn't peach pi require the same dts modification as peach pit/snow?
>
No, because the Peach Pit and Snow have an eDP to LVDS bridge chip but the
Peach Pi does not have a bridge. Ajay's series is to add DRM bridge support
to Exynos Display Port driver and so is only relevant to Snow and Pit.
Best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-19 16:28 ` Javier Martinez Canillas
0 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-11-19 16:28 UTC (permalink / raw)
To: linux-arm-kernel
Hello Paolo,
On 11/19/2014 05:22 PM, Paolo Pisati wrote:
> On Wed, Nov 19, 2014 at 12:20:53PM +0100, Javier Martinez Canillas wrote:
>>
>> If someone else is interested, I've pushed a branch [0] with 3.18-rc5 + all
>> the needed patches.
>>
>> Ajay, feel free to add to your series:
>>
>> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>>
>> Best regards,
>> Javier
>>
>> [0]: git://git.collabora.co.uk/git/user/javier/linux.git wip/exynos/dp-integ
>
> doesn't peach pi require the same dts modification as peach pit/snow?
>
No, because the Peach Pit and Snow have an eDP to LVDS bridge chip but the
Peach Pi does not have a bridge. Ajay's series is to add DRM bridge support
to Exynos Display Port driver and so is only relevant to Snow and Pit.
Best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-19 16:28 ` Javier Martinez Canillas
@ 2014-11-19 16:44 ` Andreas Färber
-1 siblings, 0 replies; 86+ messages in thread
From: Andreas Färber @ 2014-11-19 16:44 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: Paolo Pisati, Ajay kumar, Tomi Valkeinen, Laurent Pinchart,
Ajay Kumar, dri-devel, linux-arm-kernel, devicetree,
linux-samsung-soc, InKi Dae, Kukjin Kim, Sean Paul,
Thierry Reding, Daniel Vetter, Pannaga Bhushan Reddy Patel,
Prashanth G, gustavo Padovan
Am 19.11.2014 um 17:28 schrieb Javier Martinez Canillas:
> On 11/19/2014 05:22 PM, Paolo Pisati wrote:
>> On Wed, Nov 19, 2014 at 12:20:53PM +0100, Javier Martinez Canillas wrote:
>>>
>>> If someone else is interested, I've pushed a branch [0] with 3.18-rc5 + all
>>> the needed patches.
>>>
>>> Ajay, feel free to add to your series:
>>>
>>> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>>>
>>> Best regards,
>>> Javier
>>>
>>> [0]: git://git.collabora.co.uk/git/user/javier/linux.git wip/exynos/dp-integ
>>
>> doesn't peach pi require the same dts modification as peach pit/snow?
>>
>
> No, because the Peach Pit and Snow have an eDP to LVDS bridge chip but the
> Peach Pi does not have a bridge. Ajay's series is to add DRM bridge support
> to Exynos Display Port driver and so is only relevant to Snow and Pit.
... and to Spring.
So, what's the timing here - is this series headed for 3.20 now or 3.19?
Regards,
Andreas
--
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 21284 AG Nürnberg
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-19 16:44 ` Andreas Färber
0 siblings, 0 replies; 86+ messages in thread
From: Andreas Färber @ 2014-11-19 16:44 UTC (permalink / raw)
To: linux-arm-kernel
Am 19.11.2014 um 17:28 schrieb Javier Martinez Canillas:
> On 11/19/2014 05:22 PM, Paolo Pisati wrote:
>> On Wed, Nov 19, 2014 at 12:20:53PM +0100, Javier Martinez Canillas wrote:
>>>
>>> If someone else is interested, I've pushed a branch [0] with 3.18-rc5 + all
>>> the needed patches.
>>>
>>> Ajay, feel free to add to your series:
>>>
>>> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>>>
>>> Best regards,
>>> Javier
>>>
>>> [0]: git://git.collabora.co.uk/git/user/javier/linux.git wip/exynos/dp-integ
>>
>> doesn't peach pi require the same dts modification as peach pit/snow?
>>
>
> No, because the Peach Pit and Snow have an eDP to LVDS bridge chip but the
> Peach Pi does not have a bridge. Ajay's series is to add DRM bridge support
> to Exynos Display Port driver and so is only relevant to Snow and Pit.
... and to Spring.
So, what's the timing here - is this series headed for 3.20 now or 3.19?
Regards,
Andreas
--
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N?rnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imend?rffer; HRB 21284 AG N?rnberg
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-19 10:55 ` Paolo Pisati
@ 2014-11-19 19:19 ` Kevin Hilman
-1 siblings, 0 replies; 86+ messages in thread
From: Kevin Hilman @ 2014-11-19 19:19 UTC (permalink / raw)
To: Paolo Pisati
Cc: Javier Martinez Canillas, Ajay kumar, Tomi Valkeinen,
Laurent Pinchart, Ajay Kumar, dri-devel, linux-arm-kernel,
devicetree, linux-samsung-soc, InKi Dae, Kukjin Kim, Sean Paul,
Thierry Reding, Daniel Vetter, Pannaga Bhushan Reddy Patel,
Prashanth G, gustavo Padovan
Paolo Pisati <p.pisati@gmail.com> writes:
> On Wed, Nov 19, 2014 at 10:35:40AM +0100, Javier Martinez Canillas wrote:
>> Hello Ajay,
>>
>> On 11/18/2014 07:20 AM, Ajay kumar wrote:
>> > On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> >> This series is based on master branch of Linus tree at:
>> >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>
>> I applied your series on top of 3.18-rc5 + linux-next's commit:
>>
>> 0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support").
>>
>> I think you should had mentioned what other patches are needed as a
>> dependency since I spent quite a bit of time figuring out why the
>> ps8622 bridge driver probe was always deferred due of_drm_find_panel()
>> failing and then I noticed that a patch from linux-next was needed:
>>
>> e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
>>
>> With that commit the ps8622 drm bridge driver probe succeed but I still
>> don't have display working on an Exynos5240 Peach Pit, the kernel log shows:
>>
>> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
>> exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
>> exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops): -517
>> exynos-drm exynos-drm: master bind failed: -517
>> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
>
> do you have this in your dmesg?
>
> ...
> exynos-dp-video-phy 10040728.video-phy: Failed to lookup PMU regmap
> ...
>
> to get a working framebuffer out of linus 318rc4 on my peach pi, i had
> to cherry pick these 3 patches:
>
> arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy
> drm/exynos: dp: Remove support for unused dptx-phy
Excellent, thank you for pointing these out. I've been struggling to
get the display working on v3.18-rc and had missed these.
> ARM: exynos_defconfig: Enable options for display panel support
>
> Check if you have those.
With the 3 patches you mention, the display is working on my peach-pi as
well.
Thanks,
Kevin
^ permalink raw reply [flat|nested] 86+ messages in thread* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-11-19 19:19 ` Kevin Hilman
0 siblings, 0 replies; 86+ messages in thread
From: Kevin Hilman @ 2014-11-19 19:19 UTC (permalink / raw)
To: linux-arm-kernel
Paolo Pisati <p.pisati@gmail.com> writes:
> On Wed, Nov 19, 2014 at 10:35:40AM +0100, Javier Martinez Canillas wrote:
>> Hello Ajay,
>>
>> On 11/18/2014 07:20 AM, Ajay kumar wrote:
>> > On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> >> This series is based on master branch of Linus tree at:
>> >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>
>> I applied your series on top of 3.18-rc5 + linux-next's commit:
>>
>> 0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support").
>>
>> I think you should had mentioned what other patches are needed as a
>> dependency since I spent quite a bit of time figuring out why the
>> ps8622 bridge driver probe was always deferred due of_drm_find_panel()
>> failing and then I noticed that a patch from linux-next was needed:
>>
>> e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")
>>
>> With that commit the ps8622 drm bridge driver probe succeed but I still
>> don't have display working on an Exynos5240 Peach Pit, the kernel log shows:
>>
>> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
>> exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
>> exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops): -517
>> exynos-drm exynos-drm: master bind failed: -517
>> platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
>
> do you have this in your dmesg?
>
> ...
> exynos-dp-video-phy 10040728.video-phy: Failed to lookup PMU regmap
> ...
>
> to get a working framebuffer out of linus 318rc4 on my peach pi, i had
> to cherry pick these 3 patches:
>
> arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy
> drm/exynos: dp: Remove support for unused dptx-phy
Excellent, thank you for pointing these out. I've been struggling to
get the display working on v3.18-rc and had missed these.
> ARM: exynos_defconfig: Enable options for display panel support
>
> Check if you have those.
With the 3 patches you mention, the display is working on my peach-pi as
well.
Thanks,
Kevin
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-11-18 6:20 ` Ajay kumar
@ 2014-12-12 9:51 ` Javier Martinez Canillas
-1 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-12-12 9:51 UTC (permalink / raw)
To: Ajay kumar, Tomi Valkeinen, Laurent Pinchart
Cc: Ajay Kumar, dri-devel, linux-arm-kernel, devicetree,
linux-samsung-soc, InKi Dae, Kukjin Kim, Sean Paul,
Thierry Reding, Daniel Vetter, Pannaga Bhushan Reddy Patel,
Prashanth G
Hello,
On 11/18/2014 07:20 AM, Ajay kumar wrote:
> On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> This series is based on master branch of Linus tree at:
>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>
This series has been in the mailing lists for months and have been tested
by many people. What else is missing before it can be merged?
It would be great to have proper display support on platforms that have a
eDP to LVDS bridge chip (e.g: Snow, Peach Pit and Spring Chromebooks) and
everything is in place but this series which had been missing many kernel
releases already.
>>
>> Changes since V7:
>> -- Address comments from Tomi and Laurent:
>> -- Use videoports and endpoints to represent the connection between
>> encoder, bridge and the panel, instead of using phandles.
>> -- Address comments from Daniel:
>> -- Make the patch description more descriptive.
>> -- remove device pointer from drm_bridge, and just use
>> device_node instead.
>> -- don't pass encoder pointer to bridge_attach.
>> -- Address comments from Sean Paul:
>> -- Remove bridge from mode_config, and pull out drm_bridge
>> functions from drm_crtc.c to drm_bridge.c
>>
Tomi and Laurent,
You asked Ajay to change his series to use the video port and enpoints DT
bindings instead of phandles, could you please review his latest version?
I guess is now too late for 3.19 since we are in the middle of the merge
window but it would be great if this series can at least made it to 3.20.
Thanks a lot and best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-12-12 9:51 ` Javier Martinez Canillas
0 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-12-12 9:51 UTC (permalink / raw)
To: linux-arm-kernel
Hello,
On 11/18/2014 07:20 AM, Ajay kumar wrote:
> On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> This series is based on master branch of Linus tree at:
>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>
This series has been in the mailing lists for months and have been tested
by many people. What else is missing before it can be merged?
It would be great to have proper display support on platforms that have a
eDP to LVDS bridge chip (e.g: Snow, Peach Pit and Spring Chromebooks) and
everything is in place but this series which had been missing many kernel
releases already.
>>
>> Changes since V7:
>> -- Address comments from Tomi and Laurent:
>> -- Use videoports and endpoints to represent the connection between
>> encoder, bridge and the panel, instead of using phandles.
>> -- Address comments from Daniel:
>> -- Make the patch description more descriptive.
>> -- remove device pointer from drm_bridge, and just use
>> device_node instead.
>> -- don't pass encoder pointer to bridge_attach.
>> -- Address comments from Sean Paul:
>> -- Remove bridge from mode_config, and pull out drm_bridge
>> functions from drm_crtc.c to drm_bridge.c
>>
Tomi and Laurent,
You asked Ajay to change his series to use the video port and enpoints DT
bindings instead of phandles, could you please review his latest version?
I guess is now too late for 3.19 since we are in the middle of the merge
window but it would be great if this series can at least made it to 3.20.
Thanks a lot and best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-12-12 9:51 ` Javier Martinez Canillas
@ 2014-12-15 14:30 ` Tomi Valkeinen
-1 siblings, 0 replies; 86+ messages in thread
From: Tomi Valkeinen @ 2014-12-15 14:30 UTC (permalink / raw)
To: Javier Martinez Canillas, Ajay kumar, Laurent Pinchart
Cc: Ajay Kumar, dri-devel, linux-arm-kernel, devicetree,
linux-samsung-soc, InKi Dae, Kukjin Kim, Sean Paul,
Thierry Reding, Daniel Vetter, Pannaga Bhushan Reddy Patel,
Prashanth G
[-- Attachment #1: Type: text/plain, Size: 316 bytes --]
On 12/12/14 11:51, Javier Martinez Canillas wrote:
> Tomi and Laurent,
>
> You asked Ajay to change his series to use the video port and enpoints DT
> bindings instead of phandles, could you please review his latest version?
Looking only at the binding documentation patch, looks good to me.
Tomi
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-12-12 9:51 ` Javier Martinez Canillas
@ 2014-12-15 23:37 ` Laurent Pinchart
-1 siblings, 0 replies; 86+ messages in thread
From: Laurent Pinchart @ 2014-12-15 23:37 UTC (permalink / raw)
To: dri-devel
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
Ajay Kumar, Tomi Valkeinen, Ajay kumar, Kukjin Kim,
Pannaga Bhushan Reddy Patel, Prashanth G,
Javier Martinez Canillas, linux-arm-kernel
Hi Javier,
On Friday 12 December 2014 10:51:50 Javier Martinez Canillas wrote:
> Hello,
>
> On 11/18/2014 07:20 AM, Ajay kumar wrote:
> > On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar wrote:
> >> This series is based on master branch of Linus tree at:
> >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>
> This series has been in the mailing lists for months and have been tested
> by many people. What else is missing before it can be merged?
>
> It would be great to have proper display support on platforms that have a
> eDP to LVDS bridge chip (e.g: Snow, Peach Pit and Spring Chromebooks) and
> everything is in place but this series which had been missing many kernel
> releases already.
>
> >> Changes since V7:
> >> -- Address comments from Tomi and Laurent:
> >> -- Use videoports and endpoints to represent the
> >> connection between
> >>
> >> encoder, bridge and the panel, instead of using
> >> phandles.
> >>
> >> -- Address comments from Daniel:
> >> -- Make the patch description more descriptive.
> >> -- remove device pointer from drm_bridge, and just use
> >>
> >> device_node instead.
> >>
> >> -- don't pass encoder pointer to bridge_attach.
> >>
> >> -- Address comments from Sean Paul:
> >> -- Remove bridge from mode_config, and pull out
> >> drm_bridge
> >>
> >> functions from drm_crtc.c to drm_bridge.c
>
> Tomi and Laurent,
>
> You asked Ajay to change his series to use the video port and enpoints DT
> bindings instead of phandles, could you please review his latest version?
>
> I guess is now too late for 3.19 since we are in the middle of the merge
> window but it would be great if this series can at least made it to 3.20.
I don't have time to review the series in details right now, but I'm happy
with the DT bindings, and have no big issue with the rest of the patches. I
don't really like the of_drm_find_bridge() concept introduced in 03/14 but I
won't nack it given lack of time to implement an alternative proposal. It's an
internal API, it can always be reworked later anyway.
--
Regards,
Laurent Pinchart
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-12-15 23:37 ` Laurent Pinchart
0 siblings, 0 replies; 86+ messages in thread
From: Laurent Pinchart @ 2014-12-15 23:37 UTC (permalink / raw)
To: linux-arm-kernel
Hi Javier,
On Friday 12 December 2014 10:51:50 Javier Martinez Canillas wrote:
> Hello,
>
> On 11/18/2014 07:20 AM, Ajay kumar wrote:
> > On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar wrote:
> >> This series is based on master branch of Linus tree at:
> >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>
> This series has been in the mailing lists for months and have been tested
> by many people. What else is missing before it can be merged?
>
> It would be great to have proper display support on platforms that have a
> eDP to LVDS bridge chip (e.g: Snow, Peach Pit and Spring Chromebooks) and
> everything is in place but this series which had been missing many kernel
> releases already.
>
> >> Changes since V7:
> >> -- Address comments from Tomi and Laurent:
> >> -- Use videoports and endpoints to represent the
> >> connection between
> >>
> >> encoder, bridge and the panel, instead of using
> >> phandles.
> >>
> >> -- Address comments from Daniel:
> >> -- Make the patch description more descriptive.
> >> -- remove device pointer from drm_bridge, and just use
> >>
> >> device_node instead.
> >>
> >> -- don't pass encoder pointer to bridge_attach.
> >>
> >> -- Address comments from Sean Paul:
> >> -- Remove bridge from mode_config, and pull out
> >> drm_bridge
> >>
> >> functions from drm_crtc.c to drm_bridge.c
>
> Tomi and Laurent,
>
> You asked Ajay to change his series to use the video port and enpoints DT
> bindings instead of phandles, could you please review his latest version?
>
> I guess is now too late for 3.19 since we are in the middle of the merge
> window but it would be great if this series can at least made it to 3.20.
I don't have time to review the series in details right now, but I'm happy
with the DT bindings, and have no big issue with the rest of the patches. I
don't really like the of_drm_find_bridge() concept introduced in 03/14 but I
won't nack it given lack of time to implement an alternative proposal. It's an
internal API, it can always be reworked later anyway.
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-12-15 23:37 ` Laurent Pinchart
@ 2014-12-17 9:31 ` Javier Martinez Canillas
-1 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-12-17 9:31 UTC (permalink / raw)
To: Laurent Pinchart, dri-devel
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
Tomi Valkeinen, Ajay kumar, Kukjin Kim,
Pannaga Bhushan Reddy Patel, Prashanth G, Ajay Kumar,
linux-arm-kernel
Hello Laurent and Tomi,
On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
> Hi Javier,
>> Tomi and Laurent,
>>
>> You asked Ajay to change his series to use the video port and enpoints DT
>> bindings instead of phandles, could you please review his latest version?
>>
>> I guess is now too late for 3.19 since we are in the middle of the merge
>> window but it would be great if this series can at least made it to 3.20.
>
> I don't have time to review the series in details right now, but I'm happy
> with the DT bindings, and have no big issue with the rest of the patches. I
> don't really like the of_drm_find_bridge() concept introduced in 03/14 but I
> won't nack it given lack of time to implement an alternative proposal. It's an
> internal API, it can always be reworked later anyway.
>
Thanks a lot for taking the time to look at the DT bindings, then I guess
that the series are finally ready to be merged?
Ajay's series don't apply cleanly anymore because it has been a while since
he posted it but he can rebase on top of 3.19-rc1 once it is released and
re-resend.
Best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-12-17 9:31 ` Javier Martinez Canillas
0 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2014-12-17 9:31 UTC (permalink / raw)
To: linux-arm-kernel
Hello Laurent and Tomi,
On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
> Hi Javier,
>> Tomi and Laurent,
>>
>> You asked Ajay to change his series to use the video port and enpoints DT
>> bindings instead of phandles, could you please review his latest version?
>>
>> I guess is now too late for 3.19 since we are in the middle of the merge
>> window but it would be great if this series can at least made it to 3.20.
>
> I don't have time to review the series in details right now, but I'm happy
> with the DT bindings, and have no big issue with the rest of the patches. I
> don't really like the of_drm_find_bridge() concept introduced in 03/14 but I
> won't nack it given lack of time to implement an alternative proposal. It's an
> internal API, it can always be reworked later anyway.
>
Thanks a lot for taking the time to look at the DT bindings, then I guess
that the series are finally ready to be merged?
Ajay's series don't apply cleanly anymore because it has been a while since
he posted it but he can rebase on top of 3.19-rc1 once it is released and
re-resend.
Best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-12-17 9:31 ` Javier Martinez Canillas
@ 2014-12-17 11:29 ` Laurent Pinchart
-1 siblings, 0 replies; 86+ messages in thread
From: Laurent Pinchart @ 2014-12-17 11:29 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
dri-devel, Tomi Valkeinen, Ajay kumar, Kukjin Kim,
Pannaga Bhushan Reddy Patel, Prashanth G, Ajay Kumar,
linux-arm-kernel
Hi Javier,
On Wednesday 17 December 2014 10:31:41 Javier Martinez Canillas wrote:
> On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
> > Hi Javier,
> >
> >> Tomi and Laurent,
> >>
> >> You asked Ajay to change his series to use the video port and enpoints DT
> >> bindings instead of phandles, could you please review his latest version?
> >>
> >> I guess is now too late for 3.19 since we are in the middle of the merge
> >> window but it would be great if this series can at least made it to 3.20.
> >
> > I don't have time to review the series in details right now, but I'm happy
> > with the DT bindings, and have no big issue with the rest of the patches.
> > I
> > don't really like the of_drm_find_bridge() concept introduced in 03/14 but
> > I won't nack it given lack of time to implement an alternative proposal.
> > It's an internal API, it can always be reworked later anyway.
>
> Thanks a lot for taking the time to look at the DT bindings,
You're welcome. Sorry for the long delay.
> then I guess that the series are finally ready to be merged?
From my point of view, yes.
> Ajay's series don't apply cleanly anymore because it has been a while since
> he posted it but he can rebase on top of 3.19-rc1 once it is released and
> re-resend.
--
Regards,
Laurent Pinchart
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2014-12-17 11:29 ` Laurent Pinchart
0 siblings, 0 replies; 86+ messages in thread
From: Laurent Pinchart @ 2014-12-17 11:29 UTC (permalink / raw)
To: linux-arm-kernel
Hi Javier,
On Wednesday 17 December 2014 10:31:41 Javier Martinez Canillas wrote:
> On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
> > Hi Javier,
> >
> >> Tomi and Laurent,
> >>
> >> You asked Ajay to change his series to use the video port and enpoints DT
> >> bindings instead of phandles, could you please review his latest version?
> >>
> >> I guess is now too late for 3.19 since we are in the middle of the merge
> >> window but it would be great if this series can at least made it to 3.20.
> >
> > I don't have time to review the series in details right now, but I'm happy
> > with the DT bindings, and have no big issue with the rest of the patches.
> > I
> > don't really like the of_drm_find_bridge() concept introduced in 03/14 but
> > I won't nack it given lack of time to implement an alternative proposal.
> > It's an internal API, it can always be reworked later anyway.
>
> Thanks a lot for taking the time to look at the DT bindings,
You're welcome. Sorry for the long delay.
> then I guess that the series are finally ready to be merged?
>From my point of view, yes.
> Ajay's series don't apply cleanly anymore because it has been a while since
> he posted it but he can rebase on top of 3.19-rc1 once it is released and
> re-resend.
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2014-12-17 9:31 ` Javier Martinez Canillas
(?)
(?)
@ 2015-01-02 13:10 ` Daniel Stone
2015-01-02 13:14 ` Ajay kumar
2015-01-05 13:50 ` Thierry Reding
-1 siblings, 2 replies; 86+ messages in thread
From: Daniel Stone @ 2015-01-02 13:10 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
dri-devel, Tomi Valkeinen, Laurent Pinchart, Ajay kumar,
Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G, Ajay Kumar,
linux-arm-kernel
[-- Attachment #1.1: Type: text/plain, Size: 1330 bytes --]
Hi Ajay,
On 17 December 2014 at 09:31, Javier Martinez Canillas <
javier.martinez@collabora.co.uk> wrote:
> On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
> >> You asked Ajay to change his series to use the video port and enpoints
> DT
> >> bindings instead of phandles, could you please review his latest
> version?
> >>
> >> I guess is now too late for 3.19 since we are in the middle of the merge
> >> window but it would be great if this series can at least made it to
> 3.20.
> >
> > I don't have time to review the series in details right now, but I'm
> happy
> > with the DT bindings, and have no big issue with the rest of the
> patches. I
> > don't really like the of_drm_find_bridge() concept introduced in 03/14
> but I
> > won't nack it given lack of time to implement an alternative proposal.
> It's an
> > internal API, it can always be reworked later anyway.
>
> Thanks a lot for taking the time to look at the DT bindings, then I guess
> that the series are finally ready to be merged?
>
> Ajay's series don't apply cleanly anymore because it has been a while since
> he posted it but he can rebase on top of 3.19-rc1 once it is released and
> re-resend.
>
Do you have any plans to rebase this so it's ready for merging?
Thierry, Daniel, Dave - whose tree would this be best to merge through?
Cheers,
Daniel
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_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-02 13:10 ` Daniel Stone
@ 2015-01-02 13:14 ` Ajay kumar
2015-01-05 13:50 ` Thierry Reding
1 sibling, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2015-01-02 13:14 UTC (permalink / raw)
To: Daniel Stone
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
dri-devel, Ajay Kumar, Tomi Valkeinen, Laurent Pinchart,
Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G,
Javier Martinez Canillas, linux-arm-kernel
Hi Daniel,
This series is sitting out there since long without any ACKs.
If people can ACK this series, I am ready to rebase and send ASAP.
Regards,
Ajay Kumar
On Fri, Jan 2, 2015 at 6:40 PM, Daniel Stone <daniel@fooishbar.org> wrote:
> Hi Ajay,
>
> On 17 December 2014 at 09:31, Javier Martinez Canillas
> <javier.martinez@collabora.co.uk> wrote:
>>
>> On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
>> >> You asked Ajay to change his series to use the video port and enpoints
>> >> DT
>> >> bindings instead of phandles, could you please review his latest
>> >> version?
>> >>
>> >> I guess is now too late for 3.19 since we are in the middle of the
>> >> merge
>> >> window but it would be great if this series can at least made it to
>> >> 3.20.
>> >
>> > I don't have time to review the series in details right now, but I'm
>> > happy
>> > with the DT bindings, and have no big issue with the rest of the
>> > patches. I
>> > don't really like the of_drm_find_bridge() concept introduced in 03/14
>> > but I
>> > won't nack it given lack of time to implement an alternative proposal.
>> > It's an
>> > internal API, it can always be reworked later anyway.
>>
>> Thanks a lot for taking the time to look at the DT bindings, then I guess
>> that the series are finally ready to be merged?
>>
>> Ajay's series don't apply cleanly anymore because it has been a while
>> since
>> he posted it but he can rebase on top of 3.19-rc1 once it is released and
>> re-resend.
>
>
> Do you have any plans to rebase this so it's ready for merging?
>
> Thierry, Daniel, Dave - whose tree would this be best to merge through?
>
> Cheers,
> Daniel
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-02 13:14 ` Ajay kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2015-01-02 13:14 UTC (permalink / raw)
To: linux-arm-kernel
Hi Daniel,
This series is sitting out there since long without any ACKs.
If people can ACK this series, I am ready to rebase and send ASAP.
Regards,
Ajay Kumar
On Fri, Jan 2, 2015 at 6:40 PM, Daniel Stone <daniel@fooishbar.org> wrote:
> Hi Ajay,
>
> On 17 December 2014 at 09:31, Javier Martinez Canillas
> <javier.martinez@collabora.co.uk> wrote:
>>
>> On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
>> >> You asked Ajay to change his series to use the video port and enpoints
>> >> DT
>> >> bindings instead of phandles, could you please review his latest
>> >> version?
>> >>
>> >> I guess is now too late for 3.19 since we are in the middle of the
>> >> merge
>> >> window but it would be great if this series can at least made it to
>> >> 3.20.
>> >
>> > I don't have time to review the series in details right now, but I'm
>> > happy
>> > with the DT bindings, and have no big issue with the rest of the
>> > patches. I
>> > don't really like the of_drm_find_bridge() concept introduced in 03/14
>> > but I
>> > won't nack it given lack of time to implement an alternative proposal.
>> > It's an
>> > internal API, it can always be reworked later anyway.
>>
>> Thanks a lot for taking the time to look at the DT bindings, then I guess
>> that the series are finally ready to be merged?
>>
>> Ajay's series don't apply cleanly anymore because it has been a while
>> since
>> he posted it but he can rebase on top of 3.19-rc1 once it is released and
>> re-resend.
>
>
> Do you have any plans to rebase this so it's ready for merging?
>
> Thierry, Daniel, Dave - whose tree would this be best to merge through?
>
> Cheers,
> Daniel
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-02 13:14 ` Ajay kumar
(?)
@ 2015-01-02 13:19 ` Daniel Stone
-1 siblings, 0 replies; 86+ messages in thread
From: Daniel Stone @ 2015-01-02 13:19 UTC (permalink / raw)
To: Ajay kumar
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
dri-devel, Ajay Kumar, Tomi Valkeinen, Laurent Pinchart,
Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G,
Javier Martinez Canillas, linux-arm-kernel
[-- Attachment #1.1: Type: text/plain, Size: 399 bytes --]
Hi Ajay,
On 2 January 2015 at 13:14, Ajay kumar <ajaynumb@gmail.com> wrote:
> This series is sitting out there since long without any ACKs.
> If people can ACK this series, I am ready to rebase and send ASAP.
>
Both Tomi and Laurent have acked this in principle for now in <
548EF081.8090009@ti.com> and <3197445.qizQc0zeRb@avalon>, so another series
would be quite good I think.
Cheers,
Daniel
[-- Attachment #1.2: Type: text/html, Size: 987 bytes --]
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_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-02 13:14 ` Ajay kumar
@ 2015-01-03 6:47 ` Inki Dae
-1 siblings, 0 replies; 86+ messages in thread
From: Inki Dae @ 2015-01-03 6:47 UTC (permalink / raw)
To: Ajay kumar
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
dri-devel, Ajay Kumar, Tomi Valkeinen, cpgs .,
Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G,
Javier Martinez Canillas, linux-arm-kernel, Laurent Pinchart
On 2015년 01월 02일 22:14, Ajay kumar wrote:
> Hi Daniel,
>
> This series is sitting out there since long without any ACKs.
> If people can ACK this series, I am ready to rebase and send ASAP.
Acked-by: Inki Dae <inki.dae@samsung.com>
And, for [PATCH V8 5/14] drm/exynos: dp: support drm_bridge,
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Thanks,
Inki Dae
>
> Regards,
> Ajay Kumar
>
> On Fri, Jan 2, 2015 at 6:40 PM, Daniel Stone <daniel@fooishbar.org> wrote:
>> Hi Ajay,
>>
>> On 17 December 2014 at 09:31, Javier Martinez Canillas
>> <javier.martinez@collabora.co.uk> wrote:
>>>
>>> On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
>>>>> You asked Ajay to change his series to use the video port and enpoints
>>>>> DT
>>>>> bindings instead of phandles, could you please review his latest
>>>>> version?
>>>>>
>>>>> I guess is now too late for 3.19 since we are in the middle of the
>>>>> merge
>>>>> window but it would be great if this series can at least made it to
>>>>> 3.20.
>>>>
>>>> I don't have time to review the series in details right now, but I'm
>>>> happy
>>>> with the DT bindings, and have no big issue with the rest of the
>>>> patches. I
>>>> don't really like the of_drm_find_bridge() concept introduced in 03/14
>>>> but I
>>>> won't nack it given lack of time to implement an alternative proposal.
>>>> It's an
>>>> internal API, it can always be reworked later anyway.
>>>
>>> Thanks a lot for taking the time to look at the DT bindings, then I guess
>>> that the series are finally ready to be merged?
>>>
>>> Ajay's series don't apply cleanly anymore because it has been a while
>>> since
>>> he posted it but he can rebase on top of 3.19-rc1 once it is released and
>>> re-resend.
>>
>>
>> Do you have any plans to rebase this so it's ready for merging?
>>
>> Thierry, Daniel, Dave - whose tree would this be best to merge through?
>>
>> Cheers,
>> Daniel
> --
> 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
>
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-03 6:47 ` Inki Dae
0 siblings, 0 replies; 86+ messages in thread
From: Inki Dae @ 2015-01-03 6:47 UTC (permalink / raw)
To: linux-arm-kernel
On 2015? 01? 02? 22:14, Ajay kumar wrote:
> Hi Daniel,
>
> This series is sitting out there since long without any ACKs.
> If people can ACK this series, I am ready to rebase and send ASAP.
Acked-by: Inki Dae <inki.dae@samsung.com>
And, for [PATCH V8 5/14] drm/exynos: dp: support drm_bridge,
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Thanks,
Inki Dae
>
> Regards,
> Ajay Kumar
>
> On Fri, Jan 2, 2015 at 6:40 PM, Daniel Stone <daniel@fooishbar.org> wrote:
>> Hi Ajay,
>>
>> On 17 December 2014 at 09:31, Javier Martinez Canillas
>> <javier.martinez@collabora.co.uk> wrote:
>>>
>>> On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
>>>>> You asked Ajay to change his series to use the video port and enpoints
>>>>> DT
>>>>> bindings instead of phandles, could you please review his latest
>>>>> version?
>>>>>
>>>>> I guess is now too late for 3.19 since we are in the middle of the
>>>>> merge
>>>>> window but it would be great if this series can at least made it to
>>>>> 3.20.
>>>>
>>>> I don't have time to review the series in details right now, but I'm
>>>> happy
>>>> with the DT bindings, and have no big issue with the rest of the
>>>> patches. I
>>>> don't really like the of_drm_find_bridge() concept introduced in 03/14
>>>> but I
>>>> won't nack it given lack of time to implement an alternative proposal.
>>>> It's an
>>>> internal API, it can always be reworked later anyway.
>>>
>>> Thanks a lot for taking the time to look at the DT bindings, then I guess
>>> that the series are finally ready to be merged?
>>>
>>> Ajay's series don't apply cleanly anymore because it has been a while
>>> since
>>> he posted it but he can rebase on top of 3.19-rc1 once it is released and
>>> re-resend.
>>
>>
>> Do you have any plans to rebase this so it's ready for merging?
>>
>> Thierry, Daniel, Dave - whose tree would this be best to merge through?
>>
>> Cheers,
>> Daniel
> --
> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-02 13:10 ` Daniel Stone
@ 2015-01-05 13:50 ` Thierry Reding
2015-01-05 13:50 ` Thierry Reding
1 sibling, 0 replies; 86+ messages in thread
From: Thierry Reding @ 2015-01-05 13:50 UTC (permalink / raw)
To: Daniel Stone
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
dri-devel, Ajay Kumar, Tomi Valkeinen, Laurent Pinchart,
Ajay kumar, Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G,
Javier Martinez Canillas, linux-arm-kernel
[-- Attachment #1.1: Type: text/plain, Size: 1705 bytes --]
On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
> Hi Ajay,
>
> On 17 December 2014 at 09:31, Javier Martinez Canillas <
> javier.martinez@collabora.co.uk> wrote:
>
> > On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
> > >> You asked Ajay to change his series to use the video port and enpoints
> > DT
> > >> bindings instead of phandles, could you please review his latest
> > version?
> > >>
> > >> I guess is now too late for 3.19 since we are in the middle of the merge
> > >> window but it would be great if this series can at least made it to
> > 3.20.
> > >
> > > I don't have time to review the series in details right now, but I'm
> > happy
> > > with the DT bindings, and have no big issue with the rest of the
> > patches. I
> > > don't really like the of_drm_find_bridge() concept introduced in 03/14
> > but I
> > > won't nack it given lack of time to implement an alternative proposal.
> > It's an
> > > internal API, it can always be reworked later anyway.
> >
> > Thanks a lot for taking the time to look at the DT bindings, then I guess
> > that the series are finally ready to be merged?
> >
> > Ajay's series don't apply cleanly anymore because it has been a while since
> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
> > re-resend.
> >
>
> Do you have any plans to rebase this so it's ready for merging?
>
> Thierry, Daniel, Dave - whose tree would this be best to merge through?
The plan is for me to take the bridge patches through the drm/panel
tree. I'm going to look at these patches again later this week but from
a very quick peek there don't seem to be any major issues left.
Thierry
[-- Attachment #1.2: Type: application/pgp-signature, Size: 819 bytes --]
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_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-05 13:50 ` Thierry Reding
0 siblings, 0 replies; 86+ messages in thread
From: Thierry Reding @ 2015-01-05 13:50 UTC (permalink / raw)
To: linux-arm-kernel
On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
> Hi Ajay,
>
> On 17 December 2014 at 09:31, Javier Martinez Canillas <
> javier.martinez at collabora.co.uk> wrote:
>
> > On 12/16/2014 12:37 AM, Laurent Pinchart wrote:
> > >> You asked Ajay to change his series to use the video port and enpoints
> > DT
> > >> bindings instead of phandles, could you please review his latest
> > version?
> > >>
> > >> I guess is now too late for 3.19 since we are in the middle of the merge
> > >> window but it would be great if this series can at least made it to
> > 3.20.
> > >
> > > I don't have time to review the series in details right now, but I'm
> > happy
> > > with the DT bindings, and have no big issue with the rest of the
> > patches. I
> > > don't really like the of_drm_find_bridge() concept introduced in 03/14
> > but I
> > > won't nack it given lack of time to implement an alternative proposal.
> > It's an
> > > internal API, it can always be reworked later anyway.
> >
> > Thanks a lot for taking the time to look at the DT bindings, then I guess
> > that the series are finally ready to be merged?
> >
> > Ajay's series don't apply cleanly anymore because it has been a while since
> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
> > re-resend.
> >
>
> Do you have any plans to rebase this so it's ready for merging?
>
> Thierry, Daniel, Dave - whose tree would this be best to merge through?
The plan is for me to take the bridge patches through the drm/panel
tree. I'm going to look at these patches again later this week but from
a very quick peek there don't seem to be any major issues left.
Thierry
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^ permalink raw reply [flat|nested] 86+ messages in thread
[parent not found: <20150105135015.GA12010-AwZRO8vwLAwmlAP/+Wk3EA@public.gmane.org>]
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-05 13:50 ` Thierry Reding
@ 2015-01-19 10:27 ` Javier Martinez Canillas
-1 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2015-01-19 10:27 UTC (permalink / raw)
To: Thierry Reding, Daniel Stone
Cc: Laurent Pinchart, dri-devel, devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA, Sean Paul,
Daniel Vetter, Tomi Valkeinen, Ajay kumar, Kukjin Kim,
Pannaga Bhushan Reddy Patel, Prashanth G, Ajay Kumar,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r
Hello Thierry,
On 01/05/2015 02:50 PM, Thierry Reding wrote:
> On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
>> >
>> > Ajay's series don't apply cleanly anymore because it has been a while since
>> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
>> > re-resend.
>> >
>>
>> Do you have any plans to rebase this so it's ready for merging?
>>
>> Thierry, Daniel, Dave - whose tree would this be best to merge through?
>
> The plan is for me to take the bridge patches through the drm/panel
> tree. I'm going to look at these patches again later this week but from
> a very quick peek there don't seem to be any major issues left.
>
I know you probably are very busy but it would be great if you can take a look
to this series to avoid another kernel release to be missed since we are already
at v3.19-rc5.
Only this version was posted 2 months ago and the first version of the series
was sent on May, 2014 so it has been on the list for almost a year now...
Tomi and Laurent had already agreed with the DT binging so I think that we can
already merge these and if there are any remaining issues, those can be fixed
during the 3.20 -rc cycle.
> Thierry
>
Thanks a lot and best regards,
Javier
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-19 10:27 ` Javier Martinez Canillas
0 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2015-01-19 10:27 UTC (permalink / raw)
To: linux-arm-kernel
Hello Thierry,
On 01/05/2015 02:50 PM, Thierry Reding wrote:
> On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
>> >
>> > Ajay's series don't apply cleanly anymore because it has been a while since
>> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
>> > re-resend.
>> >
>>
>> Do you have any plans to rebase this so it's ready for merging?
>>
>> Thierry, Daniel, Dave - whose tree would this be best to merge through?
>
> The plan is for me to take the bridge patches through the drm/panel
> tree. I'm going to look at these patches again later this week but from
> a very quick peek there don't seem to be any major issues left.
>
I know you probably are very busy but it would be great if you can take a look
to this series to avoid another kernel release to be missed since we are already
at v3.19-rc5.
Only this version was posted 2 months ago and the first version of the series
was sent on May, 2014 so it has been on the list for almost a year now...
Tomi and Laurent had already agreed with the DT binging so I think that we can
already merge these and if there are any remaining issues, those can be fixed
during the 3.20 -rc cycle.
> Thierry
>
Thanks a lot and best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-19 10:27 ` Javier Martinez Canillas
@ 2015-01-19 16:30 ` Thierry Reding
-1 siblings, 0 replies; 86+ messages in thread
From: Thierry Reding @ 2015-01-19 16:30 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: Daniel Stone, Laurent Pinchart, dri-devel, devicetree,
linux-samsung-soc, Sean Paul, Daniel Vetter, Tomi Valkeinen,
Ajay kumar, Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G,
Ajay Kumar, linux-arm-kernel
[-- Attachment #1: Type: text/plain, Size: 1922 bytes --]
On Mon, Jan 19, 2015 at 11:27:52AM +0100, Javier Martinez Canillas wrote:
> Hello Thierry,
>
> On 01/05/2015 02:50 PM, Thierry Reding wrote:
> > On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
> >> >
> >> > Ajay's series don't apply cleanly anymore because it has been a while since
> >> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
> >> > re-resend.
> >> >
> >>
> >> Do you have any plans to rebase this so it's ready for merging?
> >>
> >> Thierry, Daniel, Dave - whose tree would this be best to merge through?
> >
> > The plan is for me to take the bridge patches through the drm/panel
> > tree. I'm going to look at these patches again later this week but from
> > a very quick peek there don't seem to be any major issues left.
> >
>
> I know you probably are very busy but it would be great if you can take a look
> to this series to avoid another kernel release to be missed since we are already
> at v3.19-rc5.
>
> Only this version was posted 2 months ago and the first version of the series
> was sent on May, 2014 so it has been on the list for almost a year now...
>
> Tomi and Laurent had already agreed with the DT binging so I think that we can
> already merge these and if there are any remaining issues, those can be fixed
> during the 3.20 -rc cycle.
I see only a single Tested-by on this series and that seems to be with a
bunch of out-of-tree patches applied on top. Does this now actually work
applied on top of upstream? Also it seems like many people actually want
this to get merged but there's been no Reviewed-bys and only a single
Tested-by? Is that as good as it's going to get?
Also I think the last update was that Ajay was going to resend this
based on v3.19-rc1 or something. Is that still going to happen?
Otherwise I can probably try to apply as-is, but not sure how well it
will.
Thierry
[-- Attachment #2: Type: application/pgp-signature, Size: 819 bytes --]
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-19 16:30 ` Thierry Reding
0 siblings, 0 replies; 86+ messages in thread
From: Thierry Reding @ 2015-01-19 16:30 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, Jan 19, 2015 at 11:27:52AM +0100, Javier Martinez Canillas wrote:
> Hello Thierry,
>
> On 01/05/2015 02:50 PM, Thierry Reding wrote:
> > On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
> >> >
> >> > Ajay's series don't apply cleanly anymore because it has been a while since
> >> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
> >> > re-resend.
> >> >
> >>
> >> Do you have any plans to rebase this so it's ready for merging?
> >>
> >> Thierry, Daniel, Dave - whose tree would this be best to merge through?
> >
> > The plan is for me to take the bridge patches through the drm/panel
> > tree. I'm going to look at these patches again later this week but from
> > a very quick peek there don't seem to be any major issues left.
> >
>
> I know you probably are very busy but it would be great if you can take a look
> to this series to avoid another kernel release to be missed since we are already
> at v3.19-rc5.
>
> Only this version was posted 2 months ago and the first version of the series
> was sent on May, 2014 so it has been on the list for almost a year now...
>
> Tomi and Laurent had already agreed with the DT binging so I think that we can
> already merge these and if there are any remaining issues, those can be fixed
> during the 3.20 -rc cycle.
I see only a single Tested-by on this series and that seems to be with a
bunch of out-of-tree patches applied on top. Does this now actually work
applied on top of upstream? Also it seems like many people actually want
this to get merged but there's been no Reviewed-bys and only a single
Tested-by? Is that as good as it's going to get?
Also I think the last update was that Ajay was going to resend this
based on v3.19-rc1 or something. Is that still going to happen?
Otherwise I can probably try to apply as-is, but not sure how well it
will.
Thierry
-------------- next part --------------
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^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-19 16:30 ` Thierry Reding
@ 2015-01-19 17:01 ` Gustavo Padovan
-1 siblings, 0 replies; 86+ messages in thread
From: Gustavo Padovan @ 2015-01-19 17:01 UTC (permalink / raw)
To: Thierry Reding
Cc: Javier Martinez Canillas, Daniel Stone, Laurent Pinchart,
dri-devel, devicetree, linux-samsung-soc, Sean Paul,
Daniel Vetter, Tomi Valkeinen, Ajay kumar, Kukjin Kim,
Pannaga Bhushan Reddy Patel, Prashanth G, Ajay Kumar,
linux-arm-kernel
2015-01-19 Thierry Reding <thierry.reding@gmail.com>:
> On Mon, Jan 19, 2015 at 11:27:52AM +0100, Javier Martinez Canillas wrote:
> > Hello Thierry,
> >
> > On 01/05/2015 02:50 PM, Thierry Reding wrote:
> > > On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
> > >> >
> > >> > Ajay's series don't apply cleanly anymore because it has been a while since
> > >> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
> > >> > re-resend.
> > >> >
> > >>
> > >> Do you have any plans to rebase this so it's ready for merging?
> > >>
> > >> Thierry, Daniel, Dave - whose tree would this be best to merge through?
> > >
> > > The plan is for me to take the bridge patches through the drm/panel
> > > tree. I'm going to look at these patches again later this week but from
> > > a very quick peek there don't seem to be any major issues left.
> > >
> >
> > I know you probably are very busy but it would be great if you can take a look
> > to this series to avoid another kernel release to be missed since we are already
> > at v3.19-rc5.
> >
> > Only this version was posted 2 months ago and the first version of the series
> > was sent on May, 2014 so it has been on the list for almost a year now...
> >
> > Tomi and Laurent had already agreed with the DT binging so I think that we can
> > already merge these and if there are any remaining issues, those can be fixed
> > during the 3.20 -rc cycle.
>
> I see only a single Tested-by on this series and that seems to be with a
> bunch of out-of-tree patches applied on top. Does this now actually work
> applied on top of upstream? Also it seems like many people actually want
> this to get merged but there's been no Reviewed-bys and only a single
> Tested-by? Is that as good as it's going to get?
I've been using this series on top of exynos-drm for more than a month and it
works fine for me so..
Tested-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Gustavo
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-19 17:01 ` Gustavo Padovan
0 siblings, 0 replies; 86+ messages in thread
From: Gustavo Padovan @ 2015-01-19 17:01 UTC (permalink / raw)
To: linux-arm-kernel
2015-01-19 Thierry Reding <thierry.reding@gmail.com>:
> On Mon, Jan 19, 2015 at 11:27:52AM +0100, Javier Martinez Canillas wrote:
> > Hello Thierry,
> >
> > On 01/05/2015 02:50 PM, Thierry Reding wrote:
> > > On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
> > >> >
> > >> > Ajay's series don't apply cleanly anymore because it has been a while since
> > >> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
> > >> > re-resend.
> > >> >
> > >>
> > >> Do you have any plans to rebase this so it's ready for merging?
> > >>
> > >> Thierry, Daniel, Dave - whose tree would this be best to merge through?
> > >
> > > The plan is for me to take the bridge patches through the drm/panel
> > > tree. I'm going to look at these patches again later this week but from
> > > a very quick peek there don't seem to be any major issues left.
> > >
> >
> > I know you probably are very busy but it would be great if you can take a look
> > to this series to avoid another kernel release to be missed since we are already
> > at v3.19-rc5.
> >
> > Only this version was posted 2 months ago and the first version of the series
> > was sent on May, 2014 so it has been on the list for almost a year now...
> >
> > Tomi and Laurent had already agreed with the DT binging so I think that we can
> > already merge these and if there are any remaining issues, those can be fixed
> > during the 3.20 -rc cycle.
>
> I see only a single Tested-by on this series and that seems to be with a
> bunch of out-of-tree patches applied on top. Does this now actually work
> applied on top of upstream? Also it seems like many people actually want
> this to get merged but there's been no Reviewed-bys and only a single
> Tested-by? Is that as good as it's going to get?
I've been using this series on top of exynos-drm for more than a month and it
works fine for me so..
Tested-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Gustavo
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-19 17:01 ` Gustavo Padovan
@ 2015-01-19 17:43 ` Sjoerd Simons
-1 siblings, 0 replies; 86+ messages in thread
From: Sjoerd Simons @ 2015-01-19 17:43 UTC (permalink / raw)
To: Gustavo Padovan
Cc: Thierry Reding, Javier Martinez Canillas, Daniel Stone,
Laurent Pinchart, dri-devel, devicetree, linux-samsung-soc,
Sean Paul, Daniel Vetter, Tomi Valkeinen, Ajay kumar, Kukjin Kim,
Pannaga Bhushan Reddy Patel, Prashanth G, Ajay Kumar,
linux-arm-kernel
[-- Attachment #1: Type: text/plain, Size: 2390 bytes --]
On Mon, 2015-01-19 at 15:01 -0200, Gustavo Padovan wrote:
> 2015-01-19 Thierry Reding <thierry.reding@gmail.com>:
>
> > On Mon, Jan 19, 2015 at 11:27:52AM +0100, Javier Martinez Canillas wrote:
> > > Hello Thierry,
> > >
> > > On 01/05/2015 02:50 PM, Thierry Reding wrote:
> > > > On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
> > > >> >
> > > >> > Ajay's series don't apply cleanly anymore because it has been a while since
> > > >> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
> > > >> > re-resend.
> > > >> >
> > > >>
> > > >> Do you have any plans to rebase this so it's ready for merging?
> > > >>
> > > >> Thierry, Daniel, Dave - whose tree would this be best to merge through?
> > > >
> > > > The plan is for me to take the bridge patches through the drm/panel
> > > > tree. I'm going to look at these patches again later this week but from
> > > > a very quick peek there don't seem to be any major issues left.
> > > >
> > >
> > > I know you probably are very busy but it would be great if you can take a look
> > > to this series to avoid another kernel release to be missed since we are already
> > > at v3.19-rc5.
> > >
> > > Only this version was posted 2 months ago and the first version of the series
> > > was sent on May, 2014 so it has been on the list for almost a year now...
> > >
> > > Tomi and Laurent had already agreed with the DT binging so I think that we can
> > > already merge these and if there are any remaining issues, those can be fixed
> > > during the 3.20 -rc cycle.
> >
> > I see only a single Tested-by on this series and that seems to be with a
> > bunch of out-of-tree patches applied on top. Does this now actually work
> > applied on top of upstream? Also it seems like many people actually want
> > this to get merged but there's been no Reviewed-bys and only a single
> > Tested-by? Is that as good as it's going to get?
>
> I've been using this series on top of exynos-drm for more than a month and it
> works fine for me so..
>
> Tested-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Same here, just test-booted on my snow with just these patch on top of
3.19-rc5 and got a nicely working display.
Tested-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
--
Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Collabora Ltd.
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^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-19 17:43 ` Sjoerd Simons
0 siblings, 0 replies; 86+ messages in thread
From: Sjoerd Simons @ 2015-01-19 17:43 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, 2015-01-19 at 15:01 -0200, Gustavo Padovan wrote:
> 2015-01-19 Thierry Reding <thierry.reding@gmail.com>:
>
> > On Mon, Jan 19, 2015 at 11:27:52AM +0100, Javier Martinez Canillas wrote:
> > > Hello Thierry,
> > >
> > > On 01/05/2015 02:50 PM, Thierry Reding wrote:
> > > > On Fri, Jan 02, 2015 at 01:10:14PM +0000, Daniel Stone wrote:
> > > >> >
> > > >> > Ajay's series don't apply cleanly anymore because it has been a while since
> > > >> > he posted it but he can rebase on top of 3.19-rc1 once it is released and
> > > >> > re-resend.
> > > >> >
> > > >>
> > > >> Do you have any plans to rebase this so it's ready for merging?
> > > >>
> > > >> Thierry, Daniel, Dave - whose tree would this be best to merge through?
> > > >
> > > > The plan is for me to take the bridge patches through the drm/panel
> > > > tree. I'm going to look at these patches again later this week but from
> > > > a very quick peek there don't seem to be any major issues left.
> > > >
> > >
> > > I know you probably are very busy but it would be great if you can take a look
> > > to this series to avoid another kernel release to be missed since we are already
> > > at v3.19-rc5.
> > >
> > > Only this version was posted 2 months ago and the first version of the series
> > > was sent on May, 2014 so it has been on the list for almost a year now...
> > >
> > > Tomi and Laurent had already agreed with the DT binging so I think that we can
> > > already merge these and if there are any remaining issues, those can be fixed
> > > during the 3.20 -rc cycle.
> >
> > I see only a single Tested-by on this series and that seems to be with a
> > bunch of out-of-tree patches applied on top. Does this now actually work
> > applied on top of upstream? Also it seems like many people actually want
> > this to get merged but there's been no Reviewed-bys and only a single
> > Tested-by? Is that as good as it's going to get?
>
> I've been using this series on top of exynos-drm for more than a month and it
> works fine for me so..
>
> Tested-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Same here, just test-booted on my snow with just these patch on top of
3.19-rc5 and got a nicely working display.
Tested-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
--
Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Collabora Ltd.
-------------- next part --------------
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^ permalink raw reply [flat|nested] 86+ messages in thread
[parent not found: <20150119163043.GB7751-AwZRO8vwLAwmlAP/+Wk3EA@public.gmane.org>]
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-19 16:30 ` Thierry Reding
@ 2015-01-19 17:05 ` Javier Martinez Canillas
-1 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2015-01-19 17:05 UTC (permalink / raw)
To: Thierry Reding
Cc: Daniel Stone, Laurent Pinchart, dri-devel,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA, Sean Paul,
Daniel Vetter, Tomi Valkeinen, Ajay kumar, Kukjin Kim,
Pannaga Bhushan Reddy Patel, Prashanth G, Ajay Kumar,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r
Hello Thierry,
On 01/19/2015 05:30 PM, Thierry Reding wrote:
>>
>> I know you probably are very busy but it would be great if you can take a look
>> to this series to avoid another kernel release to be missed since we are already
>> at v3.19-rc5.
>>
>> Only this version was posted 2 months ago and the first version of the series
>> was sent on May, 2014 so it has been on the list for almost a year now...
>>
>> Tomi and Laurent had already agreed with the DT binging so I think that we can
>> already merge these and if there are any remaining issues, those can be fixed
>> during the 3.20 -rc cycle.
>
> I see only a single Tested-by on this series and that seems to be with a
> bunch of out-of-tree patches applied on top. Does this now actually work
> applied on top of upstream? Also it seems like many people actually want
> this to get merged but there's been no Reviewed-bys and only a single
> Tested-by? Is that as good as it's going to get?
>
Good point, I provided some feedback on an early version of the series but I'm not
an DRM expert so I couldn't review it in detail to provide my Reviewed-by.
I did provide my Tested-by a long time ago though but looking at the patches it
seems those were dropped so here goes again:
For the whole series on an Exynos5420 Peach Pit and an Exynos5250 Snow Chromebooks:
Tested-by: Javier Martinez Canillas <javier.martinez-ZGY8ohtN/8pPYcu2f3hruQ@public.gmane.org>
> Also I think the last update was that Ajay was going to resend this
> based on v3.19-rc1 or something. Is that still going to happen?
> Otherwise I can probably try to apply as-is, but not sure how well it
> will.
>
Ajay,
Are you going to rebase and resend this series with all the provided tags? Gustavo
and I have a rebased branch on top of 3.19-rc5 and one of us can post your series if
you are not planning to do it.
Laurent and Tomi,
You said that you are OK with the DT bindings now, does that count as an Acked-by or
Reviewed-by for you at least for the DT bindings changes in the series?
> Thierry
>
Best regards,
Javier
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-19 17:05 ` Javier Martinez Canillas
0 siblings, 0 replies; 86+ messages in thread
From: Javier Martinez Canillas @ 2015-01-19 17:05 UTC (permalink / raw)
To: linux-arm-kernel
Hello Thierry,
On 01/19/2015 05:30 PM, Thierry Reding wrote:
>>
>> I know you probably are very busy but it would be great if you can take a look
>> to this series to avoid another kernel release to be missed since we are already
>> at v3.19-rc5.
>>
>> Only this version was posted 2 months ago and the first version of the series
>> was sent on May, 2014 so it has been on the list for almost a year now...
>>
>> Tomi and Laurent had already agreed with the DT binging so I think that we can
>> already merge these and if there are any remaining issues, those can be fixed
>> during the 3.20 -rc cycle.
>
> I see only a single Tested-by on this series and that seems to be with a
> bunch of out-of-tree patches applied on top. Does this now actually work
> applied on top of upstream? Also it seems like many people actually want
> this to get merged but there's been no Reviewed-bys and only a single
> Tested-by? Is that as good as it's going to get?
>
Good point, I provided some feedback on an early version of the series but I'm not
an DRM expert so I couldn't review it in detail to provide my Reviewed-by.
I did provide my Tested-by a long time ago though but looking at the patches it
seems those were dropped so here goes again:
For the whole series on an Exynos5420 Peach Pit and an Exynos5250 Snow Chromebooks:
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
> Also I think the last update was that Ajay was going to resend this
> based on v3.19-rc1 or something. Is that still going to happen?
> Otherwise I can probably try to apply as-is, but not sure how well it
> will.
>
Ajay,
Are you going to rebase and resend this series with all the provided tags? Gustavo
and I have a rebased branch on top of 3.19-rc5 and one of us can post your series if
you are not planning to do it.
Laurent and Tomi,
You said that you are OK with the DT bindings now, does that count as an Acked-by or
Reviewed-by for you at least for the DT bindings changes in the series?
> Thierry
>
Best regards,
Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-19 17:05 ` Javier Martinez Canillas
@ 2015-01-20 10:56 ` Ajay kumar
-1 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2015-01-20 10:56 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: devicetree, linux-samsung-soc, Sean Paul, Daniel Vetter,
Tomi Valkeinen, dri-devel, Laurent Pinchart,
Pannaga Bhushan Reddy Patel, Kukjin Kim, Prashanth G, Ajay Kumar,
linux-arm-kernel
On Mon, Jan 19, 2015 at 10:35 PM, Javier Martinez Canillas
<javier.martinez@collabora.co.uk> wrote:
> Hello Thierry,
>
> On 01/19/2015 05:30 PM, Thierry Reding wrote:
>>>
>>> I know you probably are very busy but it would be great if you can take a look
>>> to this series to avoid another kernel release to be missed since we are already
>>> at v3.19-rc5.
>>>
>>> Only this version was posted 2 months ago and the first version of the series
>>> was sent on May, 2014 so it has been on the list for almost a year now...
>>>
>>> Tomi and Laurent had already agreed with the DT binging so I think that we can
>>> already merge these and if there are any remaining issues, those can be fixed
>>> during the 3.20 -rc cycle.
>>
>> I see only a single Tested-by on this series and that seems to be with a
>> bunch of out-of-tree patches applied on top. Does this now actually work
>> applied on top of upstream? Also it seems like many people actually want
>> this to get merged but there's been no Reviewed-bys and only a single
>> Tested-by? Is that as good as it's going to get?
>>
>
> Good point, I provided some feedback on an early version of the series but I'm not
> an DRM expert so I couldn't review it in detail to provide my Reviewed-by.
>
> I did provide my Tested-by a long time ago though but looking at the patches it
> seems those were dropped so here goes again:
>
> For the whole series on an Exynos5420 Peach Pit and an Exynos5250 Snow Chromebooks:
>
> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>
>> Also I think the last update was that Ajay was going to resend this
>> based on v3.19-rc1 or something. Is that still going to happen?
>> Otherwise I can probably try to apply as-is, but not sure how well it
>> will.
>>
>
> Ajay,
>
> Are you going to rebase and resend this series with all the provided tags? Gustavo
> and I have a rebased branch on top of 3.19-rc5 and one of us can post your series if
> you are not planning to do it.
Yes, in a day or so. I am currently rebasing on 3.19-rc5 linux-next.
I will add Tested-by from from Rahul, Javier, Inki, Sjoerd, and Gustavo.
Only Inki has acked this till now. So, I will add Inki's Acked-by.
Ajay
> Laurent and Tomi,
>
> You said that you are OK with the DT bindings now, does that count as an Acked-by or
> Reviewed-by for you at least for the DT bindings changes in the series?
>
>> Thierry
>>
>
> Best regards,
> Javier
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^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-20 10:56 ` Ajay kumar
0 siblings, 0 replies; 86+ messages in thread
From: Ajay kumar @ 2015-01-20 10:56 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, Jan 19, 2015 at 10:35 PM, Javier Martinez Canillas
<javier.martinez@collabora.co.uk> wrote:
> Hello Thierry,
>
> On 01/19/2015 05:30 PM, Thierry Reding wrote:
>>>
>>> I know you probably are very busy but it would be great if you can take a look
>>> to this series to avoid another kernel release to be missed since we are already
>>> at v3.19-rc5.
>>>
>>> Only this version was posted 2 months ago and the first version of the series
>>> was sent on May, 2014 so it has been on the list for almost a year now...
>>>
>>> Tomi and Laurent had already agreed with the DT binging so I think that we can
>>> already merge these and if there are any remaining issues, those can be fixed
>>> during the 3.20 -rc cycle.
>>
>> I see only a single Tested-by on this series and that seems to be with a
>> bunch of out-of-tree patches applied on top. Does this now actually work
>> applied on top of upstream? Also it seems like many people actually want
>> this to get merged but there's been no Reviewed-bys and only a single
>> Tested-by? Is that as good as it's going to get?
>>
>
> Good point, I provided some feedback on an early version of the series but I'm not
> an DRM expert so I couldn't review it in detail to provide my Reviewed-by.
>
> I did provide my Tested-by a long time ago though but looking at the patches it
> seems those were dropped so here goes again:
>
> For the whole series on an Exynos5420 Peach Pit and an Exynos5250 Snow Chromebooks:
>
> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>
>> Also I think the last update was that Ajay was going to resend this
>> based on v3.19-rc1 or something. Is that still going to happen?
>> Otherwise I can probably try to apply as-is, but not sure how well it
>> will.
>>
>
> Ajay,
>
> Are you going to rebase and resend this series with all the provided tags? Gustavo
> and I have a rebased branch on top of 3.19-rc5 and one of us can post your series if
> you are not planning to do it.
Yes, in a day or so. I am currently rebasing on 3.19-rc5 linux-next.
I will add Tested-by from from Rahul, Javier, Inki, Sjoerd, and Gustavo.
Only Inki has acked this till now. So, I will add Inki's Acked-by.
Ajay
> Laurent and Tomi,
>
> You said that you are OK with the DT bindings now, does that count as an Acked-by or
> Reviewed-by for you at least for the DT bindings changes in the series?
>
>> Thierry
>>
>
> Best regards,
> Javier
^ permalink raw reply [flat|nested] 86+ messages in thread
* Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
2015-01-19 17:05 ` Javier Martinez Canillas
@ 2015-01-20 23:37 ` Laurent Pinchart
-1 siblings, 0 replies; 86+ messages in thread
From: Laurent Pinchart @ 2015-01-20 23:37 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: Thierry Reding, Daniel Stone, dri-devel, devicetree,
linux-samsung-soc, Sean Paul, Daniel Vetter, Tomi Valkeinen,
Ajay kumar, Kukjin Kim, Pannaga Bhushan Reddy Patel, Prashanth G,
Ajay Kumar, linux-arm-kernel
Hi,
On Monday 19 January 2015 18:05:07 Javier Martinez Canillas wrote:
> On 01/19/2015 05:30 PM, Thierry Reding wrote:
> >> I know you probably are very busy but it would be great if you can take a
> >> look to this series to avoid another kernel release to be missed since
> >> we are already at v3.19-rc5.
> >>
> >> Only this version was posted 2 months ago and the first version of the
> >> series was sent on May, 2014 so it has been on the list for almost a
> >> year now...
> >>
> >> Tomi and Laurent had already agreed with the DT binging so I think that
> >> we can already merge these and if there are any remaining issues, those
> >> can be fixed during the 3.20 -rc cycle.
> >
> > I see only a single Tested-by on this series and that seems to be with a
> > bunch of out-of-tree patches applied on top. Does this now actually work
> > applied on top of upstream? Also it seems like many people actually want
> > this to get merged but there's been no Reviewed-bys and only a single
> > Tested-by? Is that as good as it's going to get?
>
> Good point, I provided some feedback on an early version of the series but
> I'm not an DRM expert so I couldn't review it in detail to provide my
> Reviewed-by.
>
> I did provide my Tested-by a long time ago though but looking at the patches
> it seems those were dropped so here goes again:
>
> For the whole series on an Exynos5420 Peach Pit and an Exynos5250 Snow
> Chromebooks:
>
> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>
> > Also I think the last update was that Ajay was going to resend this
> > based on v3.19-rc1 or something. Is that still going to happen?
> > Otherwise I can probably try to apply as-is, but not sure how well it
> > will.
>
> Ajay,
>
> Are you going to rebase and resend this series with all the provided tags?
> Gustavo and I have a rebased branch on top of 3.19-rc5 and one of us can
> post your series if you are not planning to do it.
>
> Laurent and Tomi,
>
> You said that you are OK with the DT bindings now, does that count as an
> Acked-by or Reviewed-by for you at least for the DT bindings changes in the
> series?
It counts as an Acked-by for the DT bindings.
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 86+ messages in thread
* [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
@ 2015-01-20 23:37 ` Laurent Pinchart
0 siblings, 0 replies; 86+ messages in thread
From: Laurent Pinchart @ 2015-01-20 23:37 UTC (permalink / raw)
To: linux-arm-kernel
Hi,
On Monday 19 January 2015 18:05:07 Javier Martinez Canillas wrote:
> On 01/19/2015 05:30 PM, Thierry Reding wrote:
> >> I know you probably are very busy but it would be great if you can take a
> >> look to this series to avoid another kernel release to be missed since
> >> we are already at v3.19-rc5.
> >>
> >> Only this version was posted 2 months ago and the first version of the
> >> series was sent on May, 2014 so it has been on the list for almost a
> >> year now...
> >>
> >> Tomi and Laurent had already agreed with the DT binging so I think that
> >> we can already merge these and if there are any remaining issues, those
> >> can be fixed during the 3.20 -rc cycle.
> >
> > I see only a single Tested-by on this series and that seems to be with a
> > bunch of out-of-tree patches applied on top. Does this now actually work
> > applied on top of upstream? Also it seems like many people actually want
> > this to get merged but there's been no Reviewed-bys and only a single
> > Tested-by? Is that as good as it's going to get?
>
> Good point, I provided some feedback on an early version of the series but
> I'm not an DRM expert so I couldn't review it in detail to provide my
> Reviewed-by.
>
> I did provide my Tested-by a long time ago though but looking at the patches
> it seems those were dropped so here goes again:
>
> For the whole series on an Exynos5420 Peach Pit and an Exynos5250 Snow
> Chromebooks:
>
> Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
>
> > Also I think the last update was that Ajay was going to resend this
> > based on v3.19-rc1 or something. Is that still going to happen?
> > Otherwise I can probably try to apply as-is, but not sure how well it
> > will.
>
> Ajay,
>
> Are you going to rebase and resend this series with all the provided tags?
> Gustavo and I have a rebased branch on top of 3.19-rc5 and one of us can
> post your series if you are not planning to do it.
>
> Laurent and Tomi,
>
> You said that you are OK with the DT bindings now, does that count as an
> Acked-by or Reviewed-by for you at least for the DT bindings changes in the
> series?
It counts as an Acked-by for the DT bindings.
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 86+ messages in thread