[PATCH v2 00/11] Add displays support for bsh-smm-s2/pro boards

[PATCH v2 00/11] Add displays support for bsh-smm-s2/pro boards

[Dario Binacchi]

The series adds drivers for the displays used by bsh-smm-s2/pro boards.
This required applying some patches to the samsung-dsim driver and the
drm_bridge.c module.

Changes in v2:
- Add $ref to panel-common.yaml
- Drop port, reset-gpios, and backlight
- Set port and backlight ad required
- Replace additionalProperties with unevaluatedProperties
- Adjust the timings of the panel reset
- Adjust the mipi_dsi node based on the latest patches merged into
  the mainline in the dtsi files it includes.
- Added to the series the following patches:
  - 0001 drm/bridge: Fix bridge disable logic
  - 0002 drm/bridge: Fix a use case in the bridge disable logic
  - 0003 samsung-dsim: enter display mode in the enable() callback
  - 0004 drm: bridge: samsung-dsim: complete the CLKLANE_STOP setting

Dario Binacchi (4):
  drm/bridge: Fix bridge disable logic
  drm/bridge: Fix a use case in the bridge disable logic
  drm: bridge: samsung-dsim: enter display mode in the enable() callback
  drm: bridge: samsung-dsim: complete the CLKLANE_STOP setting

Michael Trimarchi (7):
  dt-bindings: display: panel: Add synaptics r63353 panel controller
  drm/panel: Add Synaptics R63353 panel driver
  dt-bindings: display: panel: Add Ilitek ili9805 panel controller
  drm/panel: Add Ilitek ILI9805 panel driver
  dt-bindings: ili9805: add compatible string for Tianma TM041XDHG01
  drm/panel: ilitek-ili9805: add support for Tianma TM041XDHG01 panel
  arm64: dts: imx8mn-bsh-smm-s2/pro: add display setup

 .../display/panel/ilitek,ili9805.yaml         |  64 +++
 .../display/panel/synaptics,r63353.yaml       |  61 +++
 MAINTAINERS                                   |  12 +
 .../freescale/imx8mn-bsh-smm-s2-common.dtsi   |   1 +
 .../freescale/imx8mn-bsh-smm-s2-display.dtsi  | 121 +++++
 drivers/gpu/drm/bridge/samsung-dsim.c         |  14 +-
 drivers/gpu/drm/drm_bridge.c                  |   9 +-
 drivers/gpu/drm/panel/Kconfig                 |  18 +
 drivers/gpu/drm/panel/Makefile                |   2 +
 drivers/gpu/drm/panel/panel-ilitek-ili9805.c  | 418 ++++++++++++++++++
 .../gpu/drm/panel/panel-synaptics-r63353.c    | 375 ++++++++++++++++
 11 files changed, 1088 insertions(+), 7 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
 create mode 100644 Documentation/devicetree/bindings/display/panel/synaptics,r63353.yaml
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi
 create mode 100644 drivers/gpu/drm/panel/panel-ilitek-ili9805.c
 create mode 100644 drivers/gpu/drm/panel/panel-synaptics-r63353.c

-- 
2.42.0

[PATCH v2 01/11] drm/bridge: Fix bridge disable logic

[Dario Binacchi]

As explained by the comment of the fixed code, we need to find the next
bridge that hasn't set the "pre_enable_prev_first" flag to true. The code,
on the contrary, was doing the opposite.
So, the order of disabling the bridges couldn't be altered as required
by setting the "pre_enable_prev_first" flag to true.

Fixes: 4fb912e5e190 ("drm/bridge: Introduce pre_enable_prev_first to alter bridge init order")
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

(no changes since v1)

 drivers/gpu/drm/drm_bridge.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 30d66bee0ec6..f66bf4925dd8 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -686,7 +686,7 @@ void drm_atomic_bridge_chain_post_disable(struct drm_bridge *bridge,
 				 */
 				list_for_each_entry_from(next, &encoder->bridge_chain,
 							 chain_node) {
-					if (next->pre_enable_prev_first) {
+					if (!next->pre_enable_prev_first) {
 						next = list_prev_entry(next, chain_node);
 						limit = next;
 						break;
-- 
2.42.0

[PATCH v2 02/11] drm/bridge: Fix a use case in the bridge disable logic

[Dario Binacchi]

The patch fixes the code for finding the next bridge with the
"pre_enable_prev_first" flag set to false. In case this condition is
not verified, i. e. there is no subsequent bridge with the flag set to
false, the whole bridge list is traversed, invalidating the "next"
variable.

The use of a new iteration variable (i. e. "iter") ensures that the value
of the "next" variable is not invalidated.

Fixes: 4fb912e5e190 ("drm/bridge: Introduce pre_enable_prev_first to alter bridge init order")
Co-developed-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

(no changes since v1)

 drivers/gpu/drm/drm_bridge.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index f66bf4925dd8..2e5781bf192e 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -662,7 +662,7 @@ void drm_atomic_bridge_chain_post_disable(struct drm_bridge *bridge,
 					  struct drm_atomic_state *old_state)
 {
 	struct drm_encoder *encoder;
-	struct drm_bridge *next, *limit;
+	struct drm_bridge *iter, *next, *limit;
 
 	if (!bridge)
 		return;
@@ -680,14 +680,15 @@ void drm_atomic_bridge_chain_post_disable(struct drm_bridge *bridge,
 				 * was enabled first, so disabled last
 				 */
 				limit = next;
+				iter = next;
 
 				/* Find the next bridge that has NOT requested
 				 * prev to be enabled first / disabled last
 				 */
-				list_for_each_entry_from(next, &encoder->bridge_chain,
+				list_for_each_entry_from(iter, &encoder->bridge_chain,
 							 chain_node) {
-					if (!next->pre_enable_prev_first) {
-						next = list_prev_entry(next, chain_node);
+					if (!iter->pre_enable_prev_first) {
+						next = list_prev_entry(iter, chain_node);
 						limit = next;
 						break;
 					}
-- 
2.42.0

[PATCH v2 03/11] drm: bridge: samsung-dsim: enter display mode in the enable() callback

[Dario Binacchi]

The synaptics-r63353 (panel-bridge) can only be configured in command mode.
So, samsung-dsim (bridge) must not be in display mode during the
prepare()/unprepare() of the panel-bridge. Setting the
"pre_enable_prev_first" flag to true allows the prepare() of the
panel-bridge to be called between the pre_enabled() and enabled() of the
bridge. So, the bridge can enter display mode only in the enabled().
The unprepare() of the panel-bridge is instead called between the disable()
and post_disable() of the bridge. So, the disable() must exit the display
mode (i .e. enter command mode) to allow the panel-bridge to receive DSI
commands.

samsung_dsim_atomic_pre_enable   -> command mode
r63353_panel_prepare             -> send DSI commands
samsung_dsim_atomic_enable       -> enter display mode

samsung_dsim_atomic_disable      -> exit display mode (command mode)
r63353_panel_unprepare           -> send DSI commands
samsung_dsim_atomic_post_disable

Co-developed-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

(no changes since v1)

 drivers/gpu/drm/bridge/samsung-dsim.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c
index be5914caa17d..15bf05b2bbe4 100644
--- a/drivers/gpu/drm/bridge/samsung-dsim.c
+++ b/drivers/gpu/drm/bridge/samsung-dsim.c
@@ -1494,7 +1494,6 @@ static void samsung_dsim_atomic_pre_enable(struct drm_bridge *bridge,
 			return;
 
 		samsung_dsim_set_display_mode(dsi);
-		samsung_dsim_set_display_enable(dsi, true);
 	}
 }
 
@@ -1507,6 +1506,7 @@ static void samsung_dsim_atomic_enable(struct drm_bridge *bridge,
 		samsung_dsim_set_display_mode(dsi);
 		samsung_dsim_set_display_enable(dsi, true);
 	} else {
+		samsung_dsim_set_display_enable(dsi, true);
 		samsung_dsim_set_stop_state(dsi, false);
 	}
 
@@ -1524,6 +1524,8 @@ static void samsung_dsim_atomic_disable(struct drm_bridge *bridge,
 	if (!samsung_dsim_hw_is_exynos(dsi->plat_data->hw_type))
 		samsung_dsim_set_stop_state(dsi, true);
 
+	samsung_dsim_set_display_enable(dsi, false);
+
 	dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE;
 }
 
@@ -1532,7 +1534,8 @@ static void samsung_dsim_atomic_post_disable(struct drm_bridge *bridge,
 {
 	struct samsung_dsim *dsi = bridge_to_dsi(bridge);
 
-	samsung_dsim_set_display_enable(dsi, false);
+	if (!samsung_dsim_hw_is_exynos(dsi->plat_data->hw_type))
+		samsung_dsim_set_stop_state(dsi, true);
 
 	dsi->state &= ~DSIM_STATE_ENABLED;
 	pm_runtime_put_sync(dsi->dev);
-- 
2.42.0

[PATCH v2 04/11] drm: bridge: samsung-dsim: complete the CLKLANE_STOP setting

[Dario Binacchi]

The patch completes the setting of CLKLANE_STOP for the imx8mn and imx8mp
platforms (i. e. not exynos).

Co-developed-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

(no changes since v1)

 drivers/gpu/drm/bridge/samsung-dsim.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c
index 15bf05b2bbe4..13f181c99d7e 100644
--- a/drivers/gpu/drm/bridge/samsung-dsim.c
+++ b/drivers/gpu/drm/bridge/samsung-dsim.c
@@ -96,6 +96,7 @@
 #define DSIM_MFLUSH_VS			BIT(29)
 /* This flag is valid only for exynos3250/3472/5260/5430 */
 #define DSIM_CLKLANE_STOP		BIT(30)
+#define DSIM_NON_CONTINUOUS_CLKLANE	BIT(31)
 
 /* DSIM_ESCMODE */
 #define DSIM_TX_TRIGGER_RST		BIT(4)
@@ -945,8 +946,12 @@ static int samsung_dsim_init_link(struct samsung_dsim *dsi)
 	 * power consumption.
 	 */
 	if (driver_data->has_clklane_stop &&
-	    dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)
+	    dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) {
+		if (!samsung_dsim_hw_is_exynos(dsi->plat_data->hw_type))
+			reg |= DSIM_NON_CONTINUOUS_CLKLANE;
+
 		reg |= DSIM_CLKLANE_STOP;
+	}
 	samsung_dsim_write(dsi, DSIM_CONFIG_REG, reg);
 
 	lanes_mask = BIT(dsi->lanes) - 1;
-- 
2.42.0

[PATCH v2 05/11] dt-bindings: display: panel: Add synaptics r63353 panel controller

[Dario Binacchi]

From: Michael Trimarchi <michael@amarulasolutions.com>

Add documentation for "synaptics,r63353" panel.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

---

Changes in v2:
- Add $ref to panel-common.yaml
- Drop port, reset-gpios, and backlight
- Set port and backlight ad required
- Replace additionalProperties with unevaluatedProperties

 .../display/panel/synaptics,r63353.yaml       | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/synaptics,r63353.yaml

diff --git a/Documentation/devicetree/bindings/display/panel/synaptics,r63353.yaml b/Documentation/devicetree/bindings/display/panel/synaptics,r63353.yaml
new file mode 100644
index 000000000000..590db3719eb2
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/synaptics,r63353.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/synaptics,r63353.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synaptics R63353 based MIPI-DSI panels
+
+maintainers:
+  - Michael Trimarchi <michael@amarulasolutions.com>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - sharp,ls068b3sx02
+      - const: synaptics,r63353
+
+  avdd-supply: true
+  dvdd-supply: true
+  reg: true
+
+required:
+  - compatible
+  - avdd-supply
+  - dvdd-supply
+  - reg
+  - reset-gpios
+  - port
+  - backlight
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "sharp,ls068b3sx02", "synaptics,r63353";
+            reg = <0>;
+            avdd-supply = <&avdd_display>;
+            dvdd-supply = <&dvdd_display>;
+            reset-gpios = <&r_pio 0 5 GPIO_ACTIVE_LOW>; /* PL05 */
+            backlight = <&backlight>;
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&mipi_dsi_out>;
+                };
+            };
+        };
+    };
+
+...
-- 
2.42.0

[PATCH v2 06/11] drm/panel: Add Synaptics R63353 panel driver

[Dario Binacchi]

From: Michael Trimarchi <michael@amarulasolutions.com>

The LS068B3SX02 panel is based on the Synaptics R63353 Controller.
Add a driver for it.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

---

Changes in v2:
- Adjust the timings of the panel reset

 MAINTAINERS                                   |   6 +
 drivers/gpu/drm/panel/Kconfig                 |   9 +
 drivers/gpu/drm/panel/Makefile                |   1 +
 .../gpu/drm/panel/panel-synaptics-r63353.c    | 375 ++++++++++++++++++
 4 files changed, 391 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-synaptics-r63353.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 509281e9e169..ab6985806793 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6875,6 +6875,12 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	Documentation/devicetree/bindings/display/ste,mcde.yaml
 F:	drivers/gpu/drm/mcde/
 
+DRM DRIVER FOR SYNAPTICS R63353 PANELS
+M:	Michael Trimarchi <michael@amarulasolutions.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/display/panel/synaptics,r63353.yaml
+F:	drivers/gpu/drm/panel/panel-synaptics-r63353.c
+
 DRM DRIVER FOR TI DLPC3433 MIPI DSI TO DMD BRIDGE
 M:	Jagan Teki <jagan@amarulasolutions.com>
 S:	Maintained
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 99e14dc212ec..d018702be3dc 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -735,6 +735,15 @@ config DRM_PANEL_SITRONIX_ST7789V
 	  Say Y here if you want to enable support for the Sitronix
 	  ST7789V controller for 240x320 LCD panels
 
+config DRM_PANEL_SYNAPTICS_R63353
+	tristate "Synaptics R63353-based panels"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y if you want to enable support for panels based on the
+	  Synaptics R63353 controller.
+
 config DRM_PANEL_SONY_ACX565AKM
 	tristate "Sony ACX565AKM panel"
 	depends on GPIOLIB && OF && SPI
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index d10c3de51c6d..f267d932c2b5 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -74,6 +74,7 @@ obj-$(CONFIG_DRM_PANEL_SHARP_LS060T1SX01) += panel-sharp-ls060t1sx01.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
+obj-$(CONFIG_DRM_PANEL_SYNAPTICS_R63353) += panel-synaptics-r63353.o
 obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
 obj-$(CONFIG_DRM_PANEL_SONY_TD4353_JDI) += panel-sony-td4353-jdi.o
 obj-$(CONFIG_DRM_PANEL_SONY_TULIP_TRULY_NT35521) += panel-sony-tulip-truly-nt35521.o
diff --git a/drivers/gpu/drm/panel/panel-synaptics-r63353.c b/drivers/gpu/drm/panel/panel-synaptics-r63353.c
new file mode 100644
index 000000000000..d45373de7c9f
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-synaptics-r63353.c
@@ -0,0 +1,375 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Synaptics R63353 Controller driver
+ *
+ * Copyright (C) 2020 BSH Hausgerate GmbH
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/fb.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/media-bus-format.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+
+#define R63353_INSTR(...) { \
+		.len = sizeof((u8[]) {__VA_ARGS__}), \
+		.data = (u8[]){__VA_ARGS__} \
+	}
+
+struct r63353_instr {
+	size_t len;
+	const u8 *data;
+};
+
+static const struct r63353_instr sharp_ls068b3sx02_init[] = {
+	R63353_INSTR(0x51, 0xff),
+	R63353_INSTR(0x53, 0x0c),
+	R63353_INSTR(0x55, 0x00),
+	R63353_INSTR(0x84, 0x00),
+	R63353_INSTR(0x29),
+};
+
+struct r63353_desc {
+	const char *name;
+	const struct r63353_instr *init;
+	const size_t init_length;
+	const struct drm_display_mode *mode;
+	u32 width_mm;
+	u32 height_mm;
+};
+
+struct r63353_panel {
+	struct drm_panel base;
+	struct mipi_dsi_device *dsi;
+
+	struct gpio_desc *reset_gpio;
+	struct regulator *dvdd;
+	struct regulator *avdd;
+
+	bool prepared;
+	struct r63353_desc *pdata;
+};
+
+static inline struct r63353_panel *to_r63353_panel(struct drm_panel *panel)
+{
+	return container_of(panel, struct r63353_panel, base);
+}
+
+static int r63353_panel_power_on(struct r63353_panel *rpanel)
+{
+	struct mipi_dsi_device *dsi = rpanel->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	ret = regulator_enable(rpanel->avdd);
+	if (ret) {
+		dev_err(dev, "Failed to enable avdd regulator (%d)\n", ret);
+		return ret;
+	}
+
+	usleep_range(15000, 25000);
+
+	ret = regulator_enable(rpanel->dvdd);
+	if (ret) {
+		dev_err(dev, "Failed to enable dvdd regulator (%d)\n", ret);
+		regulator_disable(rpanel->avdd);
+		return ret;
+	}
+
+	usleep_range(300000, 350000);
+	gpiod_set_value(rpanel->reset_gpio, 1);
+	usleep_range(15000, 25000);
+
+	return 0;
+}
+
+static int r63353_panel_power_off(struct r63353_panel *rpanel)
+{
+	gpiod_set_value(rpanel->reset_gpio, 0);
+	regulator_disable(rpanel->dvdd);
+	regulator_disable(rpanel->avdd);
+
+	return 0;
+}
+
+static int r63353_panel_activate(struct r63353_panel *rpanel)
+{
+	struct mipi_dsi_device *dsi = rpanel->dsi;
+	struct device *dev = &dsi->dev;
+	int i, ret;
+
+	ret = mipi_dsi_dcs_soft_reset(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to do Software Reset (%d)\n", ret);
+		goto fail;
+	}
+
+	usleep_range(15000, 17000);
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
+		goto fail;
+	}
+
+	for (i = 0; i < rpanel->pdata->init_length; i++) {
+		const struct r63353_instr *instr = &rpanel->pdata->init[i];
+
+		ret = mipi_dsi_dcs_write_buffer(dsi, instr->data, instr->len);
+		if (ret < 0)
+			return ret;
+	}
+
+	msleep(120);
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to exit sleep mode (%d)\n", ret);
+		goto fail;
+	}
+
+	usleep_range(5000, 10000);
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display ON (%d)\n", ret);
+		goto fail;
+	}
+
+	return 0;
+
+fail:
+	gpiod_set_value(rpanel->reset_gpio, 0);
+
+	return ret;
+}
+
+static int r63353_panel_prepare(struct drm_panel *panel)
+{
+	struct r63353_panel *rpanel = to_r63353_panel(panel);
+	struct mipi_dsi_device *dsi = rpanel->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	if (rpanel->prepared)
+		return 0;
+
+	dev_dbg(dev, "Preparing\n");
+
+	ret = r63353_panel_power_on(rpanel);
+	if (ret)
+		return ret;
+
+	ret = r63353_panel_activate(rpanel);
+	if (ret) {
+		r63353_panel_power_off(rpanel);
+		return ret;
+	}
+
+	rpanel->prepared = true;
+
+	dev_dbg(dev, "Prepared\n");
+	return 0;
+}
+
+static int r63353_panel_deactivate(struct r63353_panel *rpanel)
+{
+	struct mipi_dsi_device *dsi = rpanel->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display OFF (%d)\n", ret);
+		return ret;
+	}
+
+	usleep_range(5000, 10000);
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int r63353_panel_unprepare(struct drm_panel *panel)
+{
+	struct r63353_panel *rpanel = to_r63353_panel(panel);
+
+	if (!rpanel->prepared)
+		return 0;
+
+	r63353_panel_deactivate(rpanel);
+	r63353_panel_power_off(rpanel);
+
+	rpanel->prepared = false;
+
+	return 0;
+}
+
+static const struct drm_display_mode sharp_ls068b3sx02_timing = {
+	.clock = 70000,
+	.hdisplay = 640,
+	.hsync_start = 640 + 35,
+	.hsync_end = 640 + 35 + 2,
+	.htotal = 640 + 35 + 2 + 150,
+	.vdisplay = 1280,
+	.vsync_start = 1280 + 2,
+	.vsync_end = 1280 + 2 + 4,
+	.vtotal = 1280 + 2 + 4 + 0,
+};
+
+static int r63353_panel_get_modes(struct drm_panel *panel,
+				  struct drm_connector *connector)
+{
+	struct r63353_panel *rpanel = to_r63353_panel(panel);
+	struct drm_display_mode *mode;
+	static const u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+
+	mode = drm_mode_duplicate(connector->dev, rpanel->pdata->mode);
+	if (!mode)
+		return -ENOMEM;
+
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	connector->display_info.width_mm = rpanel->pdata->width_mm;
+	connector->display_info.height_mm = rpanel->pdata->height_mm;
+
+	drm_display_info_set_bus_formats(&connector->display_info,
+					 &bus_format, 1);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs r63353_panel_funcs = {
+	.prepare = r63353_panel_prepare,
+	.unprepare = r63353_panel_unprepare,
+	.get_modes = r63353_panel_get_modes,
+};
+
+static int r63353_panel_probe(struct mipi_dsi_device *dsi)
+{
+	int ret = 0;
+	struct device *dev = &dsi->dev;
+	struct r63353_panel *panel;
+
+	panel = devm_kzalloc(&dsi->dev, sizeof(*panel), GFP_KERNEL);
+	if (!panel)
+		return -ENOMEM;
+
+	mipi_dsi_set_drvdata(dsi, panel);
+	panel->dsi = dsi;
+	panel->pdata = (struct r63353_desc *)of_device_get_match_data(dev);
+
+	dev_info(dev, "Panel %s\n", panel->pdata->name);
+
+	dsi->lanes = 2;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
+			  MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM |
+			  MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_NO_EOT_PACKET;
+
+	panel->dvdd = devm_regulator_get(dev, "dvdd");
+	if (IS_ERR(panel->dvdd))
+		return PTR_ERR(panel->dvdd);
+	panel->avdd = devm_regulator_get(dev, "avdd");
+	if (IS_ERR(panel->avdd))
+		return PTR_ERR(panel->avdd);
+
+	panel->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(panel->reset_gpio)) {
+		dev_err(dev, "failed to get RESET GPIO\n");
+		return PTR_ERR(panel->reset_gpio);
+	}
+	gpiod_set_value(panel->reset_gpio, 0);
+
+	drm_panel_init(&panel->base, dev, &r63353_panel_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+
+	panel->base.prepare_prev_first = true;
+	ret = drm_panel_of_backlight(&panel->base);
+	if (ret)
+		return ret;
+
+	drm_panel_add(&panel->base);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		dev_err(dev, "mipi_dsi_attach failed: %d\n", ret);
+		drm_panel_remove(&panel->base);
+		return ret;
+	}
+
+	return ret;
+}
+
+static void r63353_panel_remove(struct mipi_dsi_device *dsi)
+{
+	struct r63353_panel *rpanel = mipi_dsi_get_drvdata(dsi);
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret < 0)
+		dev_err(dev, "Failed to detach from host (%d)\n", ret);
+
+	drm_panel_remove(&rpanel->base);
+}
+
+static void r63353_panel_shutdown(struct mipi_dsi_device *dsi)
+{
+	struct r63353_panel *rpanel = mipi_dsi_get_drvdata(dsi);
+
+	r63353_panel_unprepare(&rpanel->base);
+}
+
+static const struct r63353_desc sharp_ls068b3sx02_data = {
+	.name = "Sharp LS068B3SX02",
+	.mode = &sharp_ls068b3sx02_timing,
+	.init = sharp_ls068b3sx02_init,
+	.init_length = ARRAY_SIZE(sharp_ls068b3sx02_init),
+	.width_mm = 68,
+	.height_mm = 159,
+};
+
+static const struct of_device_id r63353_of_match[] = {
+	{ .compatible = "sharp,ls068b3sx02", .data = &sharp_ls068b3sx02_data },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, r63353_of_match);
+
+static struct mipi_dsi_driver r63353_panel_driver = {
+	.driver = {
+		   .name = "r63353-dsi",
+		   .of_match_table = r63353_of_match,
+	},
+	.probe = r63353_panel_probe,
+	.remove = r63353_panel_remove,
+	.shutdown = r63353_panel_shutdown,
+};
+
+module_mipi_dsi_driver(r63353_panel_driver);
+
+MODULE_AUTHOR("Matthias Proske <Matthias.Proske@bshg.com>");
+MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
+MODULE_DESCRIPTION("Synaptics R63353 Controller Driver");
+MODULE_LICENSE("GPL");
-- 
2.42.0

[PATCH v2 07/11] dt-bindings: display: panel: Add Ilitek ili9805 panel controller

[Dario Binacchi]

From: Michael Trimarchi <michael@amarulasolutions.com>

Add documentation for "ilitek,ili9805" panel.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

---

Changes in v2:
- Add $ref to panel-common.yaml
- Drop port, reset-gpios, and backlight
- Set port and backlight ad required
- Replace additionalProperties with unevaluatedProperties

 .../display/panel/ilitek,ili9805.yaml         | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml

diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
new file mode 100644
index 000000000000..e08af5f0b2e9
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/ilitek,ili9805.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ilitek ILI9805 based MIPI-DSI panels
+
+maintainers:
+  - Michael Trimarchi <michael@amarulasolutions.com>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - giantplus,gpm1790a0
+      - const: ilitek,ili9805
+
+  avdd-supply: true
+  dvdd-supply: true
+  power-supply: true
+  reg: true
+
+required:
+  - compatible
+  - avdd-supply
+  - dvdd-supply
+  - reg
+  - reset-gpios
+  - port
+  - backlight
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "giantplus,gpm1790a0", "ilitek,ili9805";
+            reg = <0>;
+            power-supply = <&reg_display>;
+            avdd-supply = <&avdd_display>;
+            dvdd-supply = <&dvdd_display>;
+            reset-gpios = <&r_pio 0 5 GPIO_ACTIVE_LOW>; /* PL05 */
+            backlight = <&backlight>;
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&mipi_dsi_out>;
+                };
+            };
+        };
+    };
+
+...
-- 
2.42.0

[PATCH v2 08/11] drm/panel: Add Ilitek ILI9805 panel driver

[Dario Binacchi]

From: Michael Trimarchi <michael@amarulasolutions.com>

The GPM1790A0 panel is based on the Ilitek ILI9805 Controller.
Add a driver for it.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

(no changes since v1)

 MAINTAINERS                                  |   6 +
 drivers/gpu/drm/panel/Kconfig                |   9 +
 drivers/gpu/drm/panel/Makefile               |   1 +
 drivers/gpu/drm/panel/panel-ilitek-ili9805.c | 365 +++++++++++++++++++
 4 files changed, 381 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-ilitek-ili9805.c

diff --git a/MAINTAINERS b/MAINTAINERS
index ab6985806793..db2a2e6ee14f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6647,6 +6647,12 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
 F:	drivers/gpu/drm/tiny/ili9486.c
 
+DRM DRIVER FOR ILITEK ILI9805 PANELS
+M:	Michael Trimarchi <michael@amarulasolutions.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
+F:	drivers/gpu/drm/panel/panel-ilitek-ili9805.c
+
 DRM DRIVER FOR JADARD JD9365DA-H3 MIPI-DSI LCD PANELS
 M:	Jagan Teki <jagan@edgeble.ai>
 S:	Maintained
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index d018702be3dc..dad938cf6dec 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -194,6 +194,15 @@ config DRM_PANEL_ILITEK_ILI9341
 	  QVGA (240x320) RGB panels. support serial & parallel rgb
 	  interface.
 
+config DRM_PANEL_ILITEK_ILI9805
+	tristate "Ilitek ILI9805-based panels"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y if you want to enable support for panels based on the
+	  Ilitek ILI9805 controller.
+
 config DRM_PANEL_ILITEK_ILI9881C
 	tristate "Ilitek ILI9881C-based panels"
 	depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index f267d932c2b5..d94a644d0a6c 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d
 obj-$(CONFIG_DRM_PANEL_HIMAX_HX8394) += panel-himax-hx8394.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o
+obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9805) += panel-ilitek-ili9805.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o
 obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9882T) += panel-ilitek-ili9882t.o
 obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) += panel-innolux-ej030na.o
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9805.c b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
new file mode 100644
index 000000000000..749959e10d92
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
@@ -0,0 +1,365 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 BSH Hausgerate GmbH
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/fb.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+
+#define ILI9805_EXTCMD_CMD_SET_ENABLE_REG	(0xff)
+#define ILI9805_SETEXTC_PARAMETER1		(0xff)
+#define ILI9805_SETEXTC_PARAMETER2		(0x98)
+#define ILI9805_SETEXTC_PARAMETER3		(0x05)
+
+#define ILI9805_INSTR(_delay, ...) { \
+		.delay = (_delay), \
+		.len = sizeof((u8[]) {__VA_ARGS__}), \
+		.data = (u8[]){__VA_ARGS__} \
+	}
+
+struct ili9805_instr {
+	size_t len;
+	const u8 *data;
+	u32 delay;
+};
+
+struct ili9805_desc {
+	const char *name;
+	const struct ili9805_instr *init;
+	const size_t init_length;
+	const struct drm_display_mode *mode;
+	u32 width_mm;
+	u32 height_mm;
+};
+
+struct ili9805 {
+	struct drm_panel	panel;
+	struct mipi_dsi_device	*dsi;
+	const struct ili9805_desc	*desc;
+
+	struct regulator	*dvdd;
+	struct regulator	*avdd;
+	struct gpio_desc	*reset_gpio;
+
+	bool			prepared;
+};
+
+static const struct ili9805_instr gpm1780a0_init[] = {
+	ILI9805_INSTR(100, ILI9805_EXTCMD_CMD_SET_ENABLE_REG, ILI9805_SETEXTC_PARAMETER1,
+		      ILI9805_SETEXTC_PARAMETER2, ILI9805_SETEXTC_PARAMETER3),
+	ILI9805_INSTR(100, 0xFD, 0x0F, 0x10, 0x44, 0x00),
+	ILI9805_INSTR(0, 0xf8, 0x18, 0x02, 0x02, 0x18, 0x02, 0x02, 0x30, 0x00,
+		      0x00, 0x30, 0x00, 0x00, 0x30, 0x00, 0x00),
+	ILI9805_INSTR(0, 0xB8, 0x62),
+	ILI9805_INSTR(0, 0xF1, 0x00),
+	ILI9805_INSTR(0, 0xF2, 0x00, 0x58, 0x40),
+	ILI9805_INSTR(0, 0xF3, 0x60, 0x83, 0x04),
+	ILI9805_INSTR(0, 0xFC, 0x04, 0x0F, 0x01),
+	ILI9805_INSTR(0, 0xEB, 0x08, 0x0F),
+	ILI9805_INSTR(0, 0xe0, 0x00, 0x08, 0x0d, 0x0e, 0x0e, 0x0d, 0x0a, 0x08, 0x04,
+		      0x08, 0x0d, 0x0f, 0x0b, 0x1c, 0x14, 0x0a),
+	ILI9805_INSTR(0, 0xe1, 0x00, 0x08, 0x0d, 0x0e, 0x0e, 0x0d, 0x0a, 0x08, 0x04,
+		      0x08, 0x0d, 0x0f, 0x0b, 0x1c, 0x14, 0x0a),
+	ILI9805_INSTR(10, 0xc1, 0x13, 0x39, 0x19, 0x06),
+	ILI9805_INSTR(10, 0xc7, 0xe5),
+	ILI9805_INSTR(10, 0xB1, 0x00, 0x12, 0x14),
+	ILI9805_INSTR(10, 0xB4, 0x02),
+	ILI9805_INSTR(0, 0xBB, 0x14, 0x55),
+	ILI9805_INSTR(0, MIPI_DCS_SET_ADDRESS_MODE, 0x08),
+	ILI9805_INSTR(0, MIPI_DCS_SET_PIXEL_FORMAT, 0x77),
+	ILI9805_INSTR(0, 0x20),
+	ILI9805_INSTR(0, 0xB0, 0x01),
+	ILI9805_INSTR(0, 0xB6, 0x31, 0x00, 0xef),
+	ILI9805_INSTR(0, 0xDF, 0x23),
+	ILI9805_INSTR(0, 0xB9, 0x02, 0x00),
+};
+
+static inline struct ili9805 *panel_to_ili9805(struct drm_panel *panel)
+{
+	return container_of(panel, struct ili9805, panel);
+}
+
+static int ili9805_power_on(struct ili9805 *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	ret = regulator_enable(ctx->avdd);
+	if (ret) {
+		dev_err(dev, "Failed to enable avdd regulator (%d)\n", ret);
+		return ret;
+	}
+
+	ret = regulator_enable(ctx->dvdd);
+	if (ret) {
+		dev_err(dev, "Failed to enable dvdd regulator (%d)\n", ret);
+		regulator_disable(ctx->avdd);
+		return ret;
+	}
+
+	gpiod_set_value(ctx->reset_gpio, 0);
+	usleep_range(5000, 10000);
+	gpiod_set_value(ctx->reset_gpio, 1);
+	msleep(120);
+
+	return 0;
+}
+
+static int ili9805_power_off(struct ili9805 *ctx)
+{
+	gpiod_set_value(ctx->reset_gpio, 0);
+	regulator_disable(ctx->dvdd);
+	regulator_disable(ctx->avdd);
+
+	return 0;
+}
+
+static int ili9805_activate(struct ili9805 *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int i, ret;
+
+	for (i = 0; i < ctx->desc->init_length; i++) {
+		const struct ili9805_instr *instr = &ctx->desc->init[i];
+
+		ret = mipi_dsi_dcs_write_buffer(ctx->dsi, instr->data, instr->len);
+		if (ret < 0)
+			return ret;
+
+		if (instr->delay > 0)
+			msleep(instr->delay);
+	}
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
+	if (ret) {
+		dev_err(dev, "Failed to exit sleep mode (%d)\n", ret);
+		return ret;
+	}
+
+	usleep_range(5000, 6000);
+
+	ret = mipi_dsi_dcs_set_display_on(ctx->dsi);
+	if (ret) {
+		dev_err(dev, "Failed to set display ON (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int ili9805_prepare(struct drm_panel *panel)
+{
+	struct ili9805 *ctx = panel_to_ili9805(panel);
+	int ret;
+
+	if (ctx->prepared)
+		return 0;
+
+	ret = ili9805_power_on(ctx);
+	if (ret)
+		return ret;
+
+	ret = ili9805_activate(ctx);
+	if (ret) {
+		ili9805_power_off(ctx);
+		return ret;
+	}
+
+	ctx->prepared = true;
+
+	return 0;
+}
+
+static int ili9805_deactivate(struct ili9805 *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	ret = mipi_dsi_dcs_set_display_off(ctx->dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display OFF (%d)\n", ret);
+		return ret;
+	}
+
+	usleep_range(5000, 10000);
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int ili9805_unprepare(struct drm_panel *panel)
+{
+	struct ili9805 *ctx = panel_to_ili9805(panel);
+
+	if (!ctx->prepared)
+		return 0;
+
+	ili9805_deactivate(ctx);
+	ili9805_power_off(ctx);
+
+	ctx->prepared = false;
+
+	return 0;
+}
+
+static const struct drm_display_mode gpm1780a0_timing = {
+	.clock = 26227,
+
+	.hdisplay = 480,
+	.hsync_start = 480 + 10,
+	.hsync_end = 480 + 10 + 2,
+	.htotal = 480 + 10 + 2 + 36,
+
+	.vdisplay = 480,
+	.vsync_start = 480 + 2,
+	.vsync_end = 480 + 10 + 4,
+	.vtotal = 480 + 2 + 4 + 10,
+};
+
+static int ili9805_get_modes(struct drm_panel *panel,
+			      struct drm_connector *connector)
+{
+	struct ili9805 *ctx = panel_to_ili9805(panel);
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
+	if (!mode) {
+		dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",
+			ctx->desc->mode->hdisplay,
+			ctx->desc->mode->vdisplay,
+			drm_mode_vrefresh(ctx->desc->mode));
+		return -ENOMEM;
+	}
+
+	drm_mode_set_name(mode);
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_probed_add(connector, mode);
+
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+
+	return 1;
+}
+
+static const struct drm_panel_funcs ili9805_funcs = {
+	.prepare	= ili9805_prepare,
+	.unprepare	= ili9805_unprepare,
+	.get_modes	= ili9805_get_modes,
+};
+
+static int ili9805_dsi_probe(struct mipi_dsi_device *dsi)
+{
+	struct ili9805 *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+	mipi_dsi_set_drvdata(dsi, ctx);
+	ctx->dsi = dsi;
+	ctx->desc = of_device_get_match_data(&dsi->dev);
+
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
+		MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM |
+		MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_NO_EOT_PACKET;
+	dsi->lanes = 2;
+
+	drm_panel_init(&ctx->panel, &dsi->dev, &ili9805_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+
+	ctx->dvdd = devm_regulator_get(&dsi->dev, "dvdd");
+	if (IS_ERR(ctx->dvdd))
+		return PTR_ERR(ctx->dvdd);
+	ctx->avdd = devm_regulator_get(&dsi->dev, "avdd");
+	if (IS_ERR(ctx->avdd))
+		return PTR_ERR(ctx->avdd);
+
+	ctx->reset_gpio = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ctx->reset_gpio)) {
+		dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
+		return PTR_ERR(ctx->reset_gpio);
+	}
+
+	ctx->panel.prepare_prev_first = true;
+	ret = drm_panel_of_backlight(&ctx->panel);
+	if (ret)
+		return ret;
+
+	drm_panel_add(&ctx->panel);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		dev_err(&dsi->dev, "mipi_dsi_attach failed: %d\n", ret);
+		drm_panel_remove(&ctx->panel);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void ili9805_dsi_remove(struct mipi_dsi_device *dsi)
+{
+	struct ili9805 *ctx = mipi_dsi_get_drvdata(dsi);
+	int ret;
+
+	ret = mipi_dsi_detach(dsi);
+	if (ret < 0)
+		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n",
+			ret);
+
+	drm_panel_remove(&ctx->panel);
+}
+
+static const struct ili9805_desc gpm1780a0_desc = {
+	.init = gpm1780a0_init,
+	.init_length = ARRAY_SIZE(gpm1780a0_init),
+	.mode = &gpm1780a0_timing,
+	.width_mm = 65,
+	.height_mm = 65,
+};
+
+static const struct of_device_id ili9805_of_match[] = {
+	{ .compatible = "giantplus,gpm1790a0", .data = &gpm1780a0_desc },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ili9805_of_match);
+
+static struct mipi_dsi_driver ili9805_dsi_driver = {
+	.probe		= ili9805_dsi_probe,
+	.remove		= ili9805_dsi_remove,
+	.driver = {
+		.name		= "ili9805-dsi",
+		.of_match_table	= ili9805_of_match,
+	},
+};
+module_mipi_dsi_driver(ili9805_dsi_driver);
+
+MODULE_AUTHOR("Matthias Proske <Matthias.Proske@bshg.com>");
+MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
+MODULE_DESCRIPTION("Ilitek ILI9805 Controller Driver");
+MODULE_LICENSE("GPL");
-- 
2.42.0

[PATCH v2 09/11] dt-bindings: ili9805: add compatible string for Tianma TM041XDHG01

[Dario Binacchi]

From: Michael Trimarchi <michael@amarulasolutions.com>

Add Tianma TM041XDHG01 that utilizes an Ilitek ILI9805 controller chip,
so its compatible string should be added to ilitek,ili9805 file.

Add the compatible string for it.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

(no changes since v1)

 .../devicetree/bindings/display/panel/ilitek,ili9805.yaml        | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
index e08af5f0b2e9..1b5bf42df7d6 100644
--- a/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
+++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
@@ -17,6 +17,7 @@ properties:
     items:
       - enum:
           - giantplus,gpm1790a0
+          - tianma,tm041xdhg01
       - const: ilitek,ili9805
 
   avdd-supply: true
-- 
2.42.0

[PATCH v2 10/11] drm/panel: ilitek-ili9805: add support for Tianma TM041XDHG01 panel

[Dario Binacchi]

From: Michael Trimarchi <michael@amarulasolutions.com>

Tianma TM041XDHG01 utilizes the Ilitek ILI9805 controller.

Add this panel's initialzation sequence and timing to ILI9805 driver.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

(no changes since v1)

 drivers/gpu/drm/panel/panel-ilitek-ili9805.c | 53 ++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9805.c b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
index 749959e10d92..cd187b0b1998 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
@@ -89,6 +89,36 @@ static const struct ili9805_instr gpm1780a0_init[] = {
 	ILI9805_INSTR(0, 0xB9, 0x02, 0x00),
 };
 
+static const struct ili9805_instr tm041xdhg01_init[] = {
+	ILI9805_INSTR(100, ILI9805_EXTCMD_CMD_SET_ENABLE_REG, ILI9805_SETEXTC_PARAMETER1,
+		      ILI9805_SETEXTC_PARAMETER2, ILI9805_SETEXTC_PARAMETER3),
+	ILI9805_INSTR(100, 0xFD, 0x0F, 0x13, 0x44, 0x00),
+	ILI9805_INSTR(0, 0xf8, 0x18, 0x02, 0x02, 0x18, 0x02, 0x02, 0x30, 0x01,
+		      0x01, 0x30, 0x01, 0x01, 0x30, 0x01, 0x01),
+	ILI9805_INSTR(0, 0xB8, 0x74),
+	ILI9805_INSTR(0, 0xF1, 0x00),
+	ILI9805_INSTR(0, 0xF2, 0x00, 0x58, 0x40),
+	ILI9805_INSTR(0, 0xFC, 0x04, 0x0F, 0x01),
+	ILI9805_INSTR(0, 0xEB, 0x08, 0x0F),
+	ILI9805_INSTR(0, 0xe0, 0x01, 0x0d, 0x15, 0x0e, 0x0f, 0x0f, 0x0b, 0x08, 0x04,
+		      0x07, 0x0a, 0x0d, 0x0c, 0x15, 0x0f, 0x08),
+	ILI9805_INSTR(0, 0xe1, 0x01, 0x0d, 0x15, 0x0e, 0x0f, 0x0f, 0x0b, 0x08, 0x04,
+		      0x07, 0x0a, 0x0d, 0x0c, 0x15, 0x0f, 0x08),
+	ILI9805_INSTR(10, 0xc1, 0x15, 0x03, 0x03, 0x31),
+	ILI9805_INSTR(10, 0xB1, 0x00, 0x12, 0x14),
+	ILI9805_INSTR(10, 0xB4, 0x02),
+	ILI9805_INSTR(0, 0xBB, 0x14, 0x55),
+	ILI9805_INSTR(0, MIPI_DCS_SET_ADDRESS_MODE, 0x0a),
+	ILI9805_INSTR(0, MIPI_DCS_SET_PIXEL_FORMAT, 0x77),
+	ILI9805_INSTR(0, 0x20),
+	ILI9805_INSTR(0, 0xB0, 0x00),
+	ILI9805_INSTR(0, 0xB6, 0x01),
+	ILI9805_INSTR(0, 0xc2, 0x11),
+	ILI9805_INSTR(0, 0x51, 0xFF),
+	ILI9805_INSTR(0, 0x53, 0x24),
+	ILI9805_INSTR(0, 0x55, 0x00),
+};
+
 static inline struct ili9805 *panel_to_ili9805(struct drm_panel *panel)
 {
 	return container_of(panel, struct ili9805, panel);
@@ -239,6 +269,20 @@ static const struct drm_display_mode gpm1780a0_timing = {
 	.vtotal = 480 + 2 + 4 + 10,
 };
 
+static const struct drm_display_mode tm041xdhg01_timing = {
+	.clock = 26227,
+
+	.hdisplay = 480,
+	.hsync_start = 480 + 10,
+	.hsync_end = 480 + 10 + 2,
+	.htotal = 480 + 10 + 2 + 36,
+
+	.vdisplay = 768,
+	.vsync_start = 768 + 2,
+	.vsync_end = 768 + 10 + 4,
+	.vtotal = 768 + 2 + 4 + 10,
+};
+
 static int ili9805_get_modes(struct drm_panel *panel,
 			      struct drm_connector *connector)
 {
@@ -343,8 +387,17 @@ static const struct ili9805_desc gpm1780a0_desc = {
 	.height_mm = 65,
 };
 
+static const struct ili9805_desc tm041xdhg01_desc = {
+	.init = tm041xdhg01_init,
+	.init_length = ARRAY_SIZE(tm041xdhg01_init),
+	.mode = &tm041xdhg01_timing,
+	.width_mm = 42,
+	.height_mm = 96,
+};
+
 static const struct of_device_id ili9805_of_match[] = {
 	{ .compatible = "giantplus,gpm1790a0", .data = &gpm1780a0_desc },
+	{ .compatible = "tianma,tm041xdhg01", .data = &tm041xdhg01_desc },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ili9805_of_match);
-- 
2.42.0

[PATCH v2 11/11] arm64: dts: imx8mn-bsh-smm-s2/pro: add display setup

[Dario Binacchi]

From: Michael Trimarchi <michael@amarulasolutions.com>

Add the display and nodes required for its operation.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

---

Changes in v2:
- Adjust the mipi_dsi node based on the latest patches merged into
  the mainline in the dtsi files it includes.
- Added to the series the following patches:
  - 0001 drm/bridge: Fix bridge disable logic
  - 0002 drm/bridge: Fix a use case in the bridge disable logic
  - 0003 samsung-dsim: enter display mode in the enable() callback
  - 0004 drm: bridge: samsung-dsim: complete the CLKLANE_STOP setting

 .../freescale/imx8mn-bsh-smm-s2-common.dtsi   |   1 +
 .../freescale/imx8mn-bsh-smm-s2-display.dtsi  | 121 ++++++++++++++++++
 2 files changed, 122 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi
index 22a754d438f1..bbb07c650da9 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi
@@ -7,6 +7,7 @@
 /dts-v1/;
 
 #include "imx8mn.dtsi"
+#include "imx8mn-bsh-smm-s2-display.dtsi"
 
 / {
 	chosen {
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi
new file mode 100644
index 000000000000..08f173b15495
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2021 BSH
+ */
+
+/ {
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm1 0 700000 0>;	/* 700000 ns = 1337Hz */
+		brightness-levels = <0 100>;
+		num-interpolated-steps = <100>;
+		default-brightness-level = <50>;
+		status = "okay";
+	};
+
+	reg_3v3_dvdd: regulator-3v3-O3 {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_dvdd>;
+		regulator-name = "3v3-dvdd-supply";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio1 7 GPIO_ACTIVE_LOW>;
+	};
+
+	reg_v3v3_avdd: regulator-3v3-O2 {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_avdd>;
+		regulator-name = "3v3-avdd-supply";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio1 5 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&pwm1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_bl>;
+};
+
+&lcdif {
+	status = "okay";
+	assigned-clocks = <&clk IMX8MN_VIDEO_PLL1>;
+	assigned-clock-rates = <594000000>;
+};
+
+&pgc_dispmix {
+	assigned-clocks = <&clk IMX8MN_CLK_DISP_AXI>, <&clk IMX8MN_CLK_DISP_APB>;
+	assigned-clock-parents = <&clk IMX8MN_SYS_PLL2_1000M>, <&clk IMX8MN_SYS_PLL1_800M>;
+	assigned-clock-rates = <500000000>, <200000000>;
+};
+
+&mipi_dsi {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+	samsung,esc-clock-frequency = <20000000>;
+	samsung,pll-clock-frequency = <12000000>;
+
+	panel@0 {
+		compatible = "sharp,ls068b3sx02", "synaptics,r63353";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_panel>;
+		reg = <0>;
+
+		backlight = <&backlight>;
+		dvdd-supply = <&reg_3v3_dvdd>;
+		avdd-supply = <&reg_v3v3_avdd>;
+		reset-gpios = <&gpio4 29 GPIO_ACTIVE_HIGH>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&mipi_dsi_out>;
+			};
+		};
+
+	};
+
+	ports {
+		port@1 {
+			reg = <1>;
+			mipi_dsi_out: endpoint {
+				remote-endpoint = <&panel_in>;
+			};
+		};
+	};
+};
+
+&gpu {
+	status = "okay";
+};
+
+&iomuxc {
+
+	/* This is for both PWM and voltage regulators for display */
+	pinctrl_bl: pwm1grp {
+		fsl,pins = <
+			MX8MN_IOMUXC_GPIO1_IO01_PWM1_OUT	0x16
+		>;
+	};
+
+	pinctrl_panel: panelgrp {
+		fsl,pins = <
+			MX8MN_IOMUXC_SAI3_RXC_GPIO4_IO29	0x16	/* panel reset */
+		>;
+	};
+
+	pinctrl_dvdd: dvddgrp {
+		fsl,pins = <
+			MX8MN_IOMUXC_GPIO1_IO07_GPIO1_IO7	0x16	/* VDD 3V3_VO3 */
+		>;
+	};
+
+	pinctrl_avdd: avddgrp {
+		fsl,pins = <
+			MX8MN_IOMUXC_GPIO1_IO05_GPIO1_IO5	0x16	/* VDD 3V3_VO2 */
+		>;
+	};
+};
-- 
2.42.0

Re: [PATCH v2 05/11] dt-bindings: display: panel: Add synaptics r63353 panel controller

[Krzysztof Kozlowski]

On 26/11/2023 16:44, Dario Binacchi wrote:
> From: Michael Trimarchi <michael@amarulasolutions.com>
> 
> Add documentation for "synaptics,r63353" panel.
> 
> Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Re: [PATCH v2 07/11] dt-bindings: display: panel: Add Ilitek ili9805 panel controller

[Krzysztof Kozlowski]

On 26/11/2023 16:44, Dario Binacchi wrote:
> From: Michael Trimarchi <michael@amarulasolutions.com>
> 
> Add documentation for "ilitek,ili9805" panel.
> 
> Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
> 
> ---
> 
> Changes in v2:
> - Add $ref to panel-common.yaml
> - Drop port, reset-gpios, and backlight
> - Set port and backlight ad required
> - Replace additionalProperties with unevaluatedProperties
> 
>  .../display/panel/ilitek,ili9805.yaml         | 63 +++++++++++++++++++
>  1 file changed, 63 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
> new file mode 100644
> index 000000000000..e08af5f0b2e9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/ilitek,ili9805.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Ilitek ILI9805 based MIPI-DSI panels
> +
> +maintainers:
> +  - Michael Trimarchi <michael@amarulasolutions.com>
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - giantplus,gpm1790a0
> +      - const: ilitek,ili9805
> +
> +  avdd-supply: true
> +  dvdd-supply: true
> +  power-supply: true

I think power-supply is used as a generic name for cases when specific
supplies are not defined. If you define some specific supplies, then
don't use generic.



Best regards,
Krzysztof

Re: [PATCH v2 09/11] dt-bindings: ili9805: add compatible string for Tianma TM041XDHG01

[Krzysztof Kozlowski]

On 26/11/2023 16:45, Dario Binacchi wrote:
> From: Michael Trimarchi <michael@amarulasolutions.com>
> 
> Add Tianma TM041XDHG01 that utilizes an Ilitek ILI9805 controller chip,
> so its compatible string should be added to ilitek,ili9805 file.
> 
> Add the compatible string for it.
> 
> Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
> ---
> 
> (no changes since v1)
> 
>  .../devicetree/bindings/display/panel/ilitek,ili9805.yaml        | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
> index e08af5f0b2e9..1b5bf42df7d6 100644
> --- a/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
> +++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
> @@ -17,6 +17,7 @@ properties:
>      items:
>        - enum:
>            - giantplus,gpm1790a0
> +          - tianma,tm041xdhg01

This should be squashed with previous patch.

Best regards,
Krzysztof