[PATCH v2 0/2] drm/panel: add support for the Visionox VTDR6130 AMOLED DSI panel

[PATCH v2 0/2] drm/panel: add support for the Visionox VTDR6130 AMOLED DSI panel

[Neil Armstrong]

Add support for the 1080x2400 Visionox VTDR6130 AMOLED DSI panel
found on the Qualcomm SM8550 MTP board.

By default the the panel is configured to work with DSI compressed
streams, but can work in uncompressed video mode since 1080x2400 in
RGB888 fits in the 4 DSI lanes bandwidth.

While display compression is preferred for performance and power
reasons, let's start with the uncompressed video mode support and
add the DSC support later on.

To: Thierry Reding <thierry.reding@gmail.com>
To: Sam Ravnborg <sam@ravnborg.org>
To: David Airlie <airlied@gmail.com>
To: Daniel Vetter <daniel@ffwll.ch>
To: Rob Herring <robh+dt@kernel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: devicetree@vger.kernel.org
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

---
Changes in v2:
- Patch 1: Added review tags
- Patch 2:
  - Fixed includes block grouping
  - used mipi_dsi_dcs_write_seq() instead of custom macro
  - Used MIPI_DCS macros instead of hex valuex when possible
  - Dropped first DCS write which was enabling DSC, and so removed DSC disable
  - Fixed width/height
  - Dropped calling mipi_dsi_dcs_set_display_brightness() and direct DCS write to avoid double swap
  - Fixes MODULE_AUTHOR & MODULE_DESCRIPTION
- Link to v1: https://lore.kernel.org/r/20230103-topic-sm8550-upstream-vtdr6130-panel-v1-0-9b746b858378@linaro.org

---
Neil Armstrong (2):
      dt-bindings: display: panel: document the Visionox VTDR6130 AMOLED DSI Panel bindings
      drm/panel: add visionox vtdr6130 DSI panel driver

 .../bindings/display/panel/visionox,vtdr6130.yaml  |  53 +++
 drivers/gpu/drm/panel/Kconfig                      |   8 +
 drivers/gpu/drm/panel/Makefile                     |   1 +
 drivers/gpu/drm/panel/panel-visionox-vtdr6130.c    | 358 +++++++++++++++++++++
 4 files changed, 420 insertions(+)
---
base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2
change-id: 20230103-topic-sm8550-upstream-vtdr6130-panel-f81dad976abd

Best regards,
-- 
Neil Armstrong <neil.armstrong@linaro.org>

[PATCH v2 1/2] dt-bindings: display: panel: document the Visionox VTDR6130 AMOLED DSI Panel bindings

[Neil Armstrong]

Document the 1080x2400 Visionox VTDR6130 AMOLED DSI Panel bindings.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../bindings/display/panel/visionox,vtdr6130.yaml  | 53 ++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml b/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml
new file mode 100644
index 000000000000..49e2fd4b4e99
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/visionox,vtdr6130.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/visionox,vtdr6130.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Visionox VTDR6130 AMOLED DSI Panel
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@linaro.org>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: visionox,vtdr6130
+
+  vddio-supply: true
+  vci-supply: true
+  vdd-supply: true
+  port: true
+  reset-gpios: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - vddio-supply
+  - vci-supply
+  - vdd-supply
+  - reset-gpios
+  - port
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    panel {
+        compatible = "visionox,vtdr6130";
+
+        vddio-supply = <&vreg_l12b_1p8>;
+        vci-supply = <&vreg_l13b_3p0>;
+        vdd-supply = <&vreg_l11b_1p2>;
+
+        reset-gpios = <&tlmm 133 GPIO_ACTIVE_LOW>;
+
+        port {
+            panel0_in: endpoint {
+                remote-endpoint = <&dsi0_out>;
+            };
+        };
+    };
+...

-- 
2.34.1

Re: [PATCH v2 1/2] dt-bindings: display: panel: document the Visionox VTDR6130 AMOLED DSI Panel bindings

[Krzysztof Kozlowski]

On 09/01/2023 09:49, Neil Armstrong wrote:
> Document the 1080x2400 Visionox VTDR6130 AMOLED DSI Panel bindings.
> 

If there is going to be resend:

Subject: drop last, redundant "bindings".

Best regards,
Krzysztof

Re: [PATCH v2 1/2] dt-bindings: display: panel: document the Visionox VTDR6130 AMOLED DSI Panel bindings

[Neil Armstrong]

On 09/01/2023 13:15, Krzysztof Kozlowski wrote:
> On 09/01/2023 09:49, Neil Armstrong wrote:
>> Document the 1080x2400 Visionox VTDR6130 AMOLED DSI Panel bindings.
>>
> 
> If there is going to be resend:
> 
> Subject: drop last, redundant "bindings".

I'll fix it while applying, thanks

> 
> Best regards,
> Krzysztof
> 

[PATCH v2 2/2] drm/panel: add visionox vtdr6130 DSI panel driver

[Neil Armstrong]

Add support for the 1080x2400 Visionox VTDR6130 AMOLED DSI panel
found on the Qualcomm SM8550 MTP board.

By default the the panel is configured to work with DSI compressed
streams, but can work in uncompressed video mode since 1080x2400 in
RGB888 fits in the 4 DSI lanes bandwidth.

While display compression is preferred for performance and power
reasons, let's start with the uncompressed video mode support and
add the DSC support later on.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 drivers/gpu/drm/panel/Kconfig                   |   8 +
 drivers/gpu/drm/panel/Makefile                  |   1 +
 drivers/gpu/drm/panel/panel-visionox-vtdr6130.c | 358 ++++++++++++++++++++++++
 3 files changed, 367 insertions(+)

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 737edcdf9eef..fd1d7e6f536b 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -717,6 +717,14 @@ config DRM_PANEL_VISIONOX_RM69299
 	  Say Y here if you want to enable support for Visionox
 	  RM69299  DSI Video Mode panel.
 
+config DRM_PANEL_VISIONOX_VTDR6130
+	tristate "Visionox VTDR6130"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	help
+	  Say Y here if you want to enable support for Visionox
+	  VTDR6130 1080x2400 AMOLED DSI panel.
+
 config DRM_PANEL_WIDECHIPS_WS2401
 	tristate "Widechips WS2401 DPI panel driver"
 	depends on SPI && GPIOLIB
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index f8f9d9f6a307..1966404fcf7a 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -73,5 +73,6 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
 obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
 obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
 obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o
+obj-$(CONFIG_DRM_PANEL_VISIONOX_VTDR6130) += panel-visionox-vtdr6130.o
 obj-$(CONFIG_DRM_PANEL_WIDECHIPS_WS2401) += panel-widechips-ws2401.o
 obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o
diff --git a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
new file mode 100644
index 000000000000..c107c88b22b4
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
@@ -0,0 +1,358 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (c) 2023, Linaro Limited
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/display/drm_dsc.h>
+
+#include <video/mipi_display.h>
+
+struct visionox_vtdr6130 {
+	struct drm_panel panel;
+	struct mipi_dsi_device *dsi;
+	struct gpio_desc *reset_gpio;
+	struct regulator_bulk_data supplies[3];
+	bool prepared;
+};
+
+static inline struct visionox_vtdr6130 *to_visionox_vtdr6130(struct drm_panel *panel)
+{
+	return container_of(panel, struct visionox_vtdr6130, panel);
+}
+
+static void visionox_vtdr6130_reset(struct visionox_vtdr6130 *ctx)
+{
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	usleep_range(10000, 11000);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+	usleep_range(10000, 11000);
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	usleep_range(10000, 11000);
+}
+
+static int visionox_vtdr6130_on(struct visionox_vtdr6130 *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	if (ret)
+		return ret;
+
+	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
+	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0x00, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0x59, 0x09);
+	mipi_dsi_dcs_write_seq(dsi, 0x6c, 0x01);
+	mipi_dsi_dcs_write_seq(dsi, 0x6d, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0x6f, 0x01);
+	mipi_dsi_dcs_write_seq(dsi, 0x70,
+			       0x12, 0x00, 0x00, 0xab, 0x30, 0x80, 0x09, 0x60, 0x04,
+			       0x38, 0x00, 0x28, 0x02, 0x1c, 0x02, 0x1c, 0x02, 0x00,
+			       0x02, 0x0e, 0x00, 0x20, 0x03, 0xdd, 0x00, 0x07, 0x00,
+			       0x0c, 0x02, 0x77, 0x02, 0x8b, 0x18, 0x00, 0x10, 0xf0,
+			       0x07, 0x10, 0x20, 0x00, 0x06, 0x0f, 0x0f, 0x33, 0x0e,
+			       0x1c, 0x2a, 0x38, 0x46, 0x54, 0x62, 0x69, 0x70, 0x77,
+			       0x79, 0x7b, 0x7d, 0x7e, 0x02, 0x02, 0x22, 0x00, 0x2a,
+			       0x40, 0x2a, 0xbe, 0x3a, 0xfc, 0x3a, 0xfa, 0x3a, 0xf8,
+			       0x3b, 0x38, 0x3b, 0x78, 0x3b, 0xb6, 0x4b, 0xb6, 0x4b,
+			       0xf4, 0x4b, 0xf4, 0x6c, 0x34, 0x84, 0x74, 0x00, 0x00,
+			       0x00, 0x00, 0x00, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x10);
+	mipi_dsi_dcs_write_seq(dsi, 0xb1,
+			       0x01, 0x38, 0x00, 0x14, 0x00, 0x1c, 0x00, 0x01, 0x66,
+			       0x00, 0x14, 0x00, 0x14, 0x00, 0x01, 0x66, 0x00, 0x14,
+			       0x05, 0xcc, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x13);
+	mipi_dsi_dcs_write_seq(dsi, 0xce,
+			       0x09, 0x11, 0x09, 0x11, 0x08, 0xc1, 0x07, 0xfa, 0x05,
+			       0xa4, 0x00, 0x3c, 0x00, 0x34, 0x00, 0x24, 0x00, 0x0c,
+			       0x00, 0x0c, 0x04, 0x00, 0x35);
+	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x14);
+	mipi_dsi_dcs_write_seq(dsi, 0xb2, 0x03, 0x33);
+	mipi_dsi_dcs_write_seq(dsi, 0xb4,
+			       0x00, 0x33, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00,
+			       0x3e, 0x00, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xb5,
+			       0x00, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x06, 0x01);
+	mipi_dsi_dcs_write_seq(dsi, 0xb9, 0x00, 0x00, 0x08, 0x09, 0x09, 0x09);
+	mipi_dsi_dcs_write_seq(dsi, 0xbc,
+			       0x10, 0x00, 0x00, 0x06, 0x11, 0x09, 0x3b, 0x09, 0x47,
+			       0x09, 0x47, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xbe,
+			       0x10, 0x10, 0x00, 0x08, 0x22, 0x09, 0x19, 0x09, 0x25,
+			       0x09, 0x25, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x80);
+	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x14);
+	mipi_dsi_dcs_write_seq(dsi, 0xfa, 0x08, 0x08, 0x08);
+	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x81);
+	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x05);
+	mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x0f);
+	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x82);
+	mipi_dsi_dcs_write_seq(dsi, 0xf9, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x51, 0x83);
+	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x04);
+	mipi_dsi_dcs_write_seq(dsi, 0xf8, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
+	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x01);
+	mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x9a);
+	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+		return ret;
+	}
+	msleep(120);
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display on: %d\n", ret);
+		return ret;
+	}
+	msleep(20);
+
+	return 0;
+}
+
+static int visionox_vtdr6130_off(struct visionox_vtdr6130 *ctx)
+{
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct device *dev = &dsi->dev;
+	int ret;
+
+	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to set display off: %d\n", ret);
+		return ret;
+	}
+	msleep(20);
+
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+		return ret;
+	}
+	msleep(120);
+
+	return 0;
+}
+
+static int visionox_vtdr6130_prepare(struct drm_panel *panel)
+{
+	struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	if (ctx->prepared)
+		return 0;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
+				    ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	visionox_vtdr6130_reset(ctx);
+
+	ret = visionox_vtdr6130_on(ctx);
+	if (ret < 0) {
+		dev_err(dev, "Failed to initialize panel: %d\n", ret);
+		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+		return ret;
+	}
+
+	ctx->prepared = true;
+	return 0;
+}
+
+static int visionox_vtdr6130_unprepare(struct drm_panel *panel)
+{
+	struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
+	struct device *dev = &ctx->dsi->dev;
+	int ret;
+
+	if (!ctx->prepared)
+		return 0;
+
+	ret = visionox_vtdr6130_off(ctx);
+	if (ret < 0)
+		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
+	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+
+	ctx->prepared = false;
+	return 0;
+}
+
+static const struct drm_display_mode visionox_vtdr6130_mode = {
+	.clock = (1080 + 20 + 2 + 20) * (2400 + 20 + 2 + 18) * 144 / 1000,
+	.hdisplay = 1080,
+	.hsync_start = 1080 + 20,
+	.hsync_end = 1080 + 20 + 2,
+	.htotal = 1080 + 20 + 2 + 20,
+	.vdisplay = 2400,
+	.vsync_start = 2400 + 20,
+	.vsync_end = 2400 + 20 + 2,
+	.vtotal = 2400 + 20 + 2 + 18,
+	.width_mm = 71,
+	.height_mm = 157,
+};
+
+static int visionox_vtdr6130_get_modes(struct drm_panel *panel,
+				       struct drm_connector *connector)
+{
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, &visionox_vtdr6130_mode);
+	if (!mode)
+		return -ENOMEM;
+
+	drm_mode_set_name(mode);
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static const struct drm_panel_funcs visionox_vtdr6130_panel_funcs = {
+	.prepare = visionox_vtdr6130_prepare,
+	.unprepare = visionox_vtdr6130_unprepare,
+	.get_modes = visionox_vtdr6130_get_modes,
+};
+
+static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl)
+{
+	struct mipi_dsi_device *dsi = bl_get_data(bl);
+	u16 brightness = backlight_get_brightness(bl);
+	/* Panel needs big-endian order of brightness value */
+	u8 payload[2] = { brightness >> 8, brightness & 0xff };
+	int ret;
+
+	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
+				 payload, sizeof(payload));
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static const struct backlight_ops visionox_vtdr6130_bl_ops = {
+	.update_status = visionox_vtdr6130_bl_update_status,
+};
+
+static struct backlight_device *
+visionox_vtdr6130_create_backlight(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	const struct backlight_properties props = {
+		.type = BACKLIGHT_RAW,
+		.brightness = 4095,
+		.max_brightness = 4095,
+	};
+
+	return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+					      &visionox_vtdr6130_bl_ops, &props);
+}
+
+static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct visionox_vtdr6130 *ctx;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->supplies[0].supply = "vddio";
+	ctx->supplies[1].supply = "vci";
+	ctx->supplies[2].supply = "vdd";
+
+	ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies),
+				      ctx->supplies);
+	if (ret < 0)
+		return ret;
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ctx->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+				     "Failed to get reset-gpios\n");
+
+	ctx->dsi = dsi;
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET |
+			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+	drm_panel_init(&ctx->panel, dev, &visionox_vtdr6130_panel_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+
+	ctx->panel.backlight = visionox_vtdr6130_create_backlight(dsi);
+	if (IS_ERR(ctx->panel.backlight))
+		return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
+				     "Failed to create backlight\n");
+
+	drm_panel_add(&ctx->panel);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+		drm_panel_remove(&ctx->panel);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void visionox_vtdr6130_remove(struct mipi_dsi_device *dsi)
+{
+	struct visionox_vtdr6130 *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 of_device_id visionox_vtdr6130_of_match[] = {
+	{ .compatible = "visionox,vtdr6130" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, visionox_vtdr6130_of_match);
+
+static struct mipi_dsi_driver visionox_vtdr6130_driver = {
+	.probe = visionox_vtdr6130_probe,
+	.remove = visionox_vtdr6130_remove,
+	.driver = {
+		.name = "panel-visionox-vtdr6130",
+		.of_match_table = visionox_vtdr6130_of_match,
+	},
+};
+module_mipi_dsi_driver(visionox_vtdr6130_driver);
+
+MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");
+MODULE_DESCRIPTION("Panel driver for the Visionox VTDR6130 AMOLED DSI panel");
+MODULE_LICENSE("GPL");

-- 
2.34.1

Re: [PATCH v2 2/2] drm/panel: add visionox vtdr6130 DSI panel driver

[Sam Ravnborg]

Hi Neil,

On Mon, Jan 09, 2023 at 09:49:30AM +0100, Neil Armstrong wrote:
> Add support for the 1080x2400 Visionox VTDR6130 AMOLED DSI panel
> found on the Qualcomm SM8550 MTP board.
> 
> By default the the panel is configured to work with DSI compressed
> streams, but can work in uncompressed video mode since 1080x2400 in
> RGB888 fits in the 4 DSI lanes bandwidth.
> 
> While display compression is preferred for performance and power
> reasons, let's start with the uncompressed video mode support and
> add the DSC support later on.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

One small nit about sorting include files.
At least I consider them wrongly sorted. Up to you if you fix it while
applying or you keep it as is.

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>


	Sam

> ---
>  drivers/gpu/drm/panel/Kconfig                   |   8 +
>  drivers/gpu/drm/panel/Makefile                  |   1 +
>  drivers/gpu/drm/panel/panel-visionox-vtdr6130.c | 358 ++++++++++++++++++++++++
>  3 files changed, 367 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 737edcdf9eef..fd1d7e6f536b 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -717,6 +717,14 @@ config DRM_PANEL_VISIONOX_RM69299
>  	  Say Y here if you want to enable support for Visionox
>  	  RM69299  DSI Video Mode panel.
>  
> +config DRM_PANEL_VISIONOX_VTDR6130
> +	tristate "Visionox VTDR6130"
> +	depends on OF
> +	depends on DRM_MIPI_DSI
> +	help
> +	  Say Y here if you want to enable support for Visionox
> +	  VTDR6130 1080x2400 AMOLED DSI panel.
> +
>  config DRM_PANEL_WIDECHIPS_WS2401
>  	tristate "Widechips WS2401 DPI panel driver"
>  	depends on SPI && GPIOLIB
> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> index f8f9d9f6a307..1966404fcf7a 100644
> --- a/drivers/gpu/drm/panel/Makefile
> +++ b/drivers/gpu/drm/panel/Makefile
> @@ -73,5 +73,6 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
>  obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
>  obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
>  obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o
> +obj-$(CONFIG_DRM_PANEL_VISIONOX_VTDR6130) += panel-visionox-vtdr6130.o
>  obj-$(CONFIG_DRM_PANEL_WIDECHIPS_WS2401) += panel-widechips-ws2401.o
>  obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o
> diff --git a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
> new file mode 100644
> index 000000000000..c107c88b22b4
> --- /dev/null
> +++ b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
> @@ -0,0 +1,358 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +// Copyright (c) 2023, Linaro Limited
> +
> +#include <linux/backlight.h>
> +#include <linux/delay.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +
> +#include <drm/drm_mipi_dsi.h>
> +#include <drm/drm_modes.h>
> +#include <drm/drm_panel.h>
> +#include <drm/display/drm_dsc.h>
Sort - display/, before drm_ 
> +
> +#include <video/mipi_display.h>
> +
> +struct visionox_vtdr6130 {
> +	struct drm_panel panel;
> +	struct mipi_dsi_device *dsi;
> +	struct gpio_desc *reset_gpio;
> +	struct regulator_bulk_data supplies[3];
> +	bool prepared;
> +};
> +
> +static inline struct visionox_vtdr6130 *to_visionox_vtdr6130(struct drm_panel *panel)
> +{
> +	return container_of(panel, struct visionox_vtdr6130, panel);
> +}
> +
> +static void visionox_vtdr6130_reset(struct visionox_vtdr6130 *ctx)
> +{
> +	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
> +	usleep_range(10000, 11000);
> +	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
> +	usleep_range(10000, 11000);
> +	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
> +	usleep_range(10000, 11000);
> +}
> +
> +static int visionox_vtdr6130_on(struct visionox_vtdr6130 *ctx)
> +{
> +	struct mipi_dsi_device *dsi = ctx->dsi;
> +	struct device *dev = &dsi->dev;
> +	int ret;
> +
> +	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
> +
> +	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> +	if (ret)
> +		return ret;
> +
> +	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
> +	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0x00, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0x59, 0x09);
> +	mipi_dsi_dcs_write_seq(dsi, 0x6c, 0x01);
> +	mipi_dsi_dcs_write_seq(dsi, 0x6d, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0x6f, 0x01);
> +	mipi_dsi_dcs_write_seq(dsi, 0x70,
> +			       0x12, 0x00, 0x00, 0xab, 0x30, 0x80, 0x09, 0x60, 0x04,
> +			       0x38, 0x00, 0x28, 0x02, 0x1c, 0x02, 0x1c, 0x02, 0x00,
> +			       0x02, 0x0e, 0x00, 0x20, 0x03, 0xdd, 0x00, 0x07, 0x00,
> +			       0x0c, 0x02, 0x77, 0x02, 0x8b, 0x18, 0x00, 0x10, 0xf0,
> +			       0x07, 0x10, 0x20, 0x00, 0x06, 0x0f, 0x0f, 0x33, 0x0e,
> +			       0x1c, 0x2a, 0x38, 0x46, 0x54, 0x62, 0x69, 0x70, 0x77,
> +			       0x79, 0x7b, 0x7d, 0x7e, 0x02, 0x02, 0x22, 0x00, 0x2a,
> +			       0x40, 0x2a, 0xbe, 0x3a, 0xfc, 0x3a, 0xfa, 0x3a, 0xf8,
> +			       0x3b, 0x38, 0x3b, 0x78, 0x3b, 0xb6, 0x4b, 0xb6, 0x4b,
> +			       0xf4, 0x4b, 0xf4, 0x6c, 0x34, 0x84, 0x74, 0x00, 0x00,
> +			       0x00, 0x00, 0x00, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x10);
> +	mipi_dsi_dcs_write_seq(dsi, 0xb1,
> +			       0x01, 0x38, 0x00, 0x14, 0x00, 0x1c, 0x00, 0x01, 0x66,
> +			       0x00, 0x14, 0x00, 0x14, 0x00, 0x01, 0x66, 0x00, 0x14,
> +			       0x05, 0xcc, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x13);
> +	mipi_dsi_dcs_write_seq(dsi, 0xce,
> +			       0x09, 0x11, 0x09, 0x11, 0x08, 0xc1, 0x07, 0xfa, 0x05,
> +			       0xa4, 0x00, 0x3c, 0x00, 0x34, 0x00, 0x24, 0x00, 0x0c,
> +			       0x00, 0x0c, 0x04, 0x00, 0x35);
> +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x14);
> +	mipi_dsi_dcs_write_seq(dsi, 0xb2, 0x03, 0x33);
> +	mipi_dsi_dcs_write_seq(dsi, 0xb4,
> +			       0x00, 0x33, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00,
> +			       0x3e, 0x00, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xb5,
> +			       0x00, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x06, 0x01);
> +	mipi_dsi_dcs_write_seq(dsi, 0xb9, 0x00, 0x00, 0x08, 0x09, 0x09, 0x09);
> +	mipi_dsi_dcs_write_seq(dsi, 0xbc,
> +			       0x10, 0x00, 0x00, 0x06, 0x11, 0x09, 0x3b, 0x09, 0x47,
> +			       0x09, 0x47, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xbe,
> +			       0x10, 0x10, 0x00, 0x08, 0x22, 0x09, 0x19, 0x09, 0x25,
> +			       0x09, 0x25, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x80);
> +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x14);
> +	mipi_dsi_dcs_write_seq(dsi, 0xfa, 0x08, 0x08, 0x08);
> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x81);
> +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x05);
> +	mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x0f);
> +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x82);
> +	mipi_dsi_dcs_write_seq(dsi, 0xf9, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x51, 0x83);
> +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x04);
> +	mipi_dsi_dcs_write_seq(dsi, 0xf8, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
> +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x01);
> +	mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x9a);
> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
> +
> +	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> +	if (ret < 0) {
> +		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
> +		return ret;
> +	}
> +	msleep(120);
> +
> +	ret = mipi_dsi_dcs_set_display_on(dsi);
> +	if (ret < 0) {
> +		dev_err(dev, "Failed to set display on: %d\n", ret);
> +		return ret;
> +	}
> +	msleep(20);
> +
> +	return 0;
> +}
> +
> +static int visionox_vtdr6130_off(struct visionox_vtdr6130 *ctx)
> +{
> +	struct mipi_dsi_device *dsi = ctx->dsi;
> +	struct device *dev = &dsi->dev;
> +	int ret;
> +
> +	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
> +
> +	ret = mipi_dsi_dcs_set_display_off(dsi);
> +	if (ret < 0) {
> +		dev_err(dev, "Failed to set display off: %d\n", ret);
> +		return ret;
> +	}
> +	msleep(20);
> +
> +	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> +	if (ret < 0) {
> +		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
> +		return ret;
> +	}
> +	msleep(120);
> +
> +	return 0;
> +}
> +
> +static int visionox_vtdr6130_prepare(struct drm_panel *panel)
> +{
> +	struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
> +	struct device *dev = &ctx->dsi->dev;
> +	int ret;
> +
> +	if (ctx->prepared)
> +		return 0;
> +
> +	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
> +				    ctx->supplies);
> +	if (ret < 0)
> +		return ret;
> +
> +	visionox_vtdr6130_reset(ctx);
> +
> +	ret = visionox_vtdr6130_on(ctx);
> +	if (ret < 0) {
> +		dev_err(dev, "Failed to initialize panel: %d\n", ret);
> +		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
> +		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> +		return ret;
> +	}
> +
> +	ctx->prepared = true;
> +	return 0;
> +}
> +
> +static int visionox_vtdr6130_unprepare(struct drm_panel *panel)
> +{
> +	struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
> +	struct device *dev = &ctx->dsi->dev;
> +	int ret;
> +
> +	if (!ctx->prepared)
> +		return 0;
> +
> +	ret = visionox_vtdr6130_off(ctx);
> +	if (ret < 0)
> +		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
> +
> +	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
> +
> +	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> +
> +	ctx->prepared = false;
> +	return 0;
> +}
> +
> +static const struct drm_display_mode visionox_vtdr6130_mode = {
> +	.clock = (1080 + 20 + 2 + 20) * (2400 + 20 + 2 + 18) * 144 / 1000,
> +	.hdisplay = 1080,
> +	.hsync_start = 1080 + 20,
> +	.hsync_end = 1080 + 20 + 2,
> +	.htotal = 1080 + 20 + 2 + 20,
> +	.vdisplay = 2400,
> +	.vsync_start = 2400 + 20,
> +	.vsync_end = 2400 + 20 + 2,
> +	.vtotal = 2400 + 20 + 2 + 18,
> +	.width_mm = 71,
> +	.height_mm = 157,
> +};
> +
> +static int visionox_vtdr6130_get_modes(struct drm_panel *panel,
> +				       struct drm_connector *connector)
> +{
> +	struct drm_display_mode *mode;
> +
> +	mode = drm_mode_duplicate(connector->dev, &visionox_vtdr6130_mode);
> +	if (!mode)
> +		return -ENOMEM;
> +
> +	drm_mode_set_name(mode);
> +
> +	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> +	connector->display_info.width_mm = mode->width_mm;
> +	connector->display_info.height_mm = mode->height_mm;
> +	drm_mode_probed_add(connector, mode);
> +
> +	return 1;
> +}
> +
> +static const struct drm_panel_funcs visionox_vtdr6130_panel_funcs = {
> +	.prepare = visionox_vtdr6130_prepare,
> +	.unprepare = visionox_vtdr6130_unprepare,
> +	.get_modes = visionox_vtdr6130_get_modes,
> +};
> +
> +static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl)
> +{
> +	struct mipi_dsi_device *dsi = bl_get_data(bl);
> +	u16 brightness = backlight_get_brightness(bl);
> +	/* Panel needs big-endian order of brightness value */
> +	u8 payload[2] = { brightness >> 8, brightness & 0xff };
> +	int ret;
> +
> +	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
> +				 payload, sizeof(payload));
> +	if (ret < 0)
> +		return ret;
> +
> +	return 0;
> +}
> +
> +static const struct backlight_ops visionox_vtdr6130_bl_ops = {
> +	.update_status = visionox_vtdr6130_bl_update_status,
> +};
> +
> +static struct backlight_device *
> +visionox_vtdr6130_create_backlight(struct mipi_dsi_device *dsi)
> +{
> +	struct device *dev = &dsi->dev;
> +	const struct backlight_properties props = {
> +		.type = BACKLIGHT_RAW,
> +		.brightness = 4095,
> +		.max_brightness = 4095,
> +	};
> +
> +	return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
> +					      &visionox_vtdr6130_bl_ops, &props);
> +}
> +
> +static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi)
> +{
> +	struct device *dev = &dsi->dev;
> +	struct visionox_vtdr6130 *ctx;
> +	int ret;
> +
> +	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
> +	if (!ctx)
> +		return -ENOMEM;
> +
> +	ctx->supplies[0].supply = "vddio";
> +	ctx->supplies[1].supply = "vci";
> +	ctx->supplies[2].supply = "vdd";
> +
> +	ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies),
> +				      ctx->supplies);
> +	if (ret < 0)
> +		return ret;
> +
> +	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
> +	if (IS_ERR(ctx->reset_gpio))
> +		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
> +				     "Failed to get reset-gpios\n");
> +
> +	ctx->dsi = dsi;
> +	mipi_dsi_set_drvdata(dsi, ctx);
> +
> +	dsi->lanes = 4;
> +	dsi->format = MIPI_DSI_FMT_RGB888;
> +	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET |
> +			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
> +
> +	drm_panel_init(&ctx->panel, dev, &visionox_vtdr6130_panel_funcs,
> +		       DRM_MODE_CONNECTOR_DSI);
> +
> +	ctx->panel.backlight = visionox_vtdr6130_create_backlight(dsi);
> +	if (IS_ERR(ctx->panel.backlight))
> +		return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
> +				     "Failed to create backlight\n");
> +
> +	drm_panel_add(&ctx->panel);
> +
> +	ret = mipi_dsi_attach(dsi);
> +	if (ret < 0) {
> +		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
> +		drm_panel_remove(&ctx->panel);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static void visionox_vtdr6130_remove(struct mipi_dsi_device *dsi)
> +{
> +	struct visionox_vtdr6130 *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 of_device_id visionox_vtdr6130_of_match[] = {
> +	{ .compatible = "visionox,vtdr6130" },
> +	{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, visionox_vtdr6130_of_match);
> +
> +static struct mipi_dsi_driver visionox_vtdr6130_driver = {
> +	.probe = visionox_vtdr6130_probe,
> +	.remove = visionox_vtdr6130_remove,
> +	.driver = {
> +		.name = "panel-visionox-vtdr6130",
> +		.of_match_table = visionox_vtdr6130_of_match,
> +	},
> +};
> +module_mipi_dsi_driver(visionox_vtdr6130_driver);
> +
> +MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");
> +MODULE_DESCRIPTION("Panel driver for the Visionox VTDR6130 AMOLED DSI panel");
> +MODULE_LICENSE("GPL");
> 
> -- 
> 2.34.1

Re: [PATCH v2 2/2] drm/panel: add visionox vtdr6130 DSI panel driver

[Neil Armstrong]

On 09/01/2023 19:32, Sam Ravnborg wrote:
> Hi Neil,
> 
> On Mon, Jan 09, 2023 at 09:49:30AM +0100, Neil Armstrong wrote:
>> Add support for the 1080x2400 Visionox VTDR6130 AMOLED DSI panel
>> found on the Qualcomm SM8550 MTP board.
>>
>> By default the the panel is configured to work with DSI compressed
>> streams, but can work in uncompressed video mode since 1080x2400 in
>> RGB888 fits in the 4 DSI lanes bandwidth.
>>
>> While display compression is preferred for performance and power
>> reasons, let's start with the uncompressed video mode support and
>> add the DSC support later on.
>>
>> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
> 
> One small nit about sorting include files.
> At least I consider them wrongly sorted. Up to you if you fix it while
> applying or you keep it as is.

Indeed I also consider it wrong, I'll sort them while applying, thanks !

> 
> Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> 
> 
> 	Sam
> 
>> ---
>>   drivers/gpu/drm/panel/Kconfig                   |   8 +
>>   drivers/gpu/drm/panel/Makefile                  |   1 +
>>   drivers/gpu/drm/panel/panel-visionox-vtdr6130.c | 358 ++++++++++++++++++++++++
>>   3 files changed, 367 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
>> index 737edcdf9eef..fd1d7e6f536b 100644
>> --- a/drivers/gpu/drm/panel/Kconfig
>> +++ b/drivers/gpu/drm/panel/Kconfig
>> @@ -717,6 +717,14 @@ config DRM_PANEL_VISIONOX_RM69299
>>   	  Say Y here if you want to enable support for Visionox
>>   	  RM69299  DSI Video Mode panel.
>>   
>> +config DRM_PANEL_VISIONOX_VTDR6130
>> +	tristate "Visionox VTDR6130"
>> +	depends on OF
>> +	depends on DRM_MIPI_DSI
>> +	help
>> +	  Say Y here if you want to enable support for Visionox
>> +	  VTDR6130 1080x2400 AMOLED DSI panel.
>> +
>>   config DRM_PANEL_WIDECHIPS_WS2401
>>   	tristate "Widechips WS2401 DPI panel driver"
>>   	depends on SPI && GPIOLIB
>> diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
>> index f8f9d9f6a307..1966404fcf7a 100644
>> --- a/drivers/gpu/drm/panel/Makefile
>> +++ b/drivers/gpu/drm/panel/Makefile
>> @@ -73,5 +73,6 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
>>   obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
>>   obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
>>   obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o
>> +obj-$(CONFIG_DRM_PANEL_VISIONOX_VTDR6130) += panel-visionox-vtdr6130.o
>>   obj-$(CONFIG_DRM_PANEL_WIDECHIPS_WS2401) += panel-widechips-ws2401.o
>>   obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o
>> diff --git a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
>> new file mode 100644
>> index 000000000000..c107c88b22b4
>> --- /dev/null
>> +++ b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
>> @@ -0,0 +1,358 @@
>> +// SPDX-License-Identifier: GPL-2.0-only
>> +// Copyright (c) 2023, Linaro Limited
>> +
>> +#include <linux/backlight.h>
>> +#include <linux/delay.h>
>> +#include <linux/gpio/consumer.h>
>> +#include <linux/regulator/consumer.h>
>> +#include <linux/module.h>
>> +#include <linux/of.h>
>> +
>> +#include <drm/drm_mipi_dsi.h>
>> +#include <drm/drm_modes.h>
>> +#include <drm/drm_panel.h>
>> +#include <drm/display/drm_dsc.h>
> Sort - display/, before drm_
>> +
>> +#include <video/mipi_display.h>
>> +
>> +struct visionox_vtdr6130 {
>> +	struct drm_panel panel;
>> +	struct mipi_dsi_device *dsi;
>> +	struct gpio_desc *reset_gpio;
>> +	struct regulator_bulk_data supplies[3];
>> +	bool prepared;
>> +};
>> +
>> +static inline struct visionox_vtdr6130 *to_visionox_vtdr6130(struct drm_panel *panel)
>> +{
>> +	return container_of(panel, struct visionox_vtdr6130, panel);
>> +}
>> +
>> +static void visionox_vtdr6130_reset(struct visionox_vtdr6130 *ctx)
>> +{
>> +	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
>> +	usleep_range(10000, 11000);
>> +	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
>> +	usleep_range(10000, 11000);
>> +	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
>> +	usleep_range(10000, 11000);
>> +}
>> +
>> +static int visionox_vtdr6130_on(struct visionox_vtdr6130 *ctx)
>> +{
>> +	struct mipi_dsi_device *dsi = ctx->dsi;
>> +	struct device *dev = &dsi->dev;
>> +	int ret;
>> +
>> +	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
>> +
>> +	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
>> +	if (ret)
>> +		return ret;
>> +
>> +	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
>> +	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0x00, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0x59, 0x09);
>> +	mipi_dsi_dcs_write_seq(dsi, 0x6c, 0x01);
>> +	mipi_dsi_dcs_write_seq(dsi, 0x6d, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0x6f, 0x01);
>> +	mipi_dsi_dcs_write_seq(dsi, 0x70,
>> +			       0x12, 0x00, 0x00, 0xab, 0x30, 0x80, 0x09, 0x60, 0x04,
>> +			       0x38, 0x00, 0x28, 0x02, 0x1c, 0x02, 0x1c, 0x02, 0x00,
>> +			       0x02, 0x0e, 0x00, 0x20, 0x03, 0xdd, 0x00, 0x07, 0x00,
>> +			       0x0c, 0x02, 0x77, 0x02, 0x8b, 0x18, 0x00, 0x10, 0xf0,
>> +			       0x07, 0x10, 0x20, 0x00, 0x06, 0x0f, 0x0f, 0x33, 0x0e,
>> +			       0x1c, 0x2a, 0x38, 0x46, 0x54, 0x62, 0x69, 0x70, 0x77,
>> +			       0x79, 0x7b, 0x7d, 0x7e, 0x02, 0x02, 0x22, 0x00, 0x2a,
>> +			       0x40, 0x2a, 0xbe, 0x3a, 0xfc, 0x3a, 0xfa, 0x3a, 0xf8,
>> +			       0x3b, 0x38, 0x3b, 0x78, 0x3b, 0xb6, 0x4b, 0xb6, 0x4b,
>> +			       0xf4, 0x4b, 0xf4, 0x6c, 0x34, 0x84, 0x74, 0x00, 0x00,
>> +			       0x00, 0x00, 0x00, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x10);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xb1,
>> +			       0x01, 0x38, 0x00, 0x14, 0x00, 0x1c, 0x00, 0x01, 0x66,
>> +			       0x00, 0x14, 0x00, 0x14, 0x00, 0x01, 0x66, 0x00, 0x14,
>> +			       0x05, 0xcc, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x13);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xce,
>> +			       0x09, 0x11, 0x09, 0x11, 0x08, 0xc1, 0x07, 0xfa, 0x05,
>> +			       0xa4, 0x00, 0x3c, 0x00, 0x34, 0x00, 0x24, 0x00, 0x0c,
>> +			       0x00, 0x0c, 0x04, 0x00, 0x35);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x14);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xb2, 0x03, 0x33);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xb4,
>> +			       0x00, 0x33, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00,
>> +			       0x3e, 0x00, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xb5,
>> +			       0x00, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x06, 0x01);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xb9, 0x00, 0x00, 0x08, 0x09, 0x09, 0x09);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xbc,
>> +			       0x10, 0x00, 0x00, 0x06, 0x11, 0x09, 0x3b, 0x09, 0x47,
>> +			       0x09, 0x47, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xbe,
>> +			       0x10, 0x10, 0x00, 0x08, 0x22, 0x09, 0x19, 0x09, 0x25,
>> +			       0x09, 0x25, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x80);
>> +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x14);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xfa, 0x08, 0x08, 0x08);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x81);
>> +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x05);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x0f);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x82);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xf9, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x51, 0x83);
>> +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x04);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xf8, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
>> +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x01);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x9a);
>> +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
>> +
>> +	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
>> +	if (ret < 0) {
>> +		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
>> +		return ret;
>> +	}
>> +	msleep(120);
>> +
>> +	ret = mipi_dsi_dcs_set_display_on(dsi);
>> +	if (ret < 0) {
>> +		dev_err(dev, "Failed to set display on: %d\n", ret);
>> +		return ret;
>> +	}
>> +	msleep(20);
>> +
>> +	return 0;
>> +}
>> +
>> +static int visionox_vtdr6130_off(struct visionox_vtdr6130 *ctx)
>> +{
>> +	struct mipi_dsi_device *dsi = ctx->dsi;
>> +	struct device *dev = &dsi->dev;
>> +	int ret;
>> +
>> +	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
>> +
>> +	ret = mipi_dsi_dcs_set_display_off(dsi);
>> +	if (ret < 0) {
>> +		dev_err(dev, "Failed to set display off: %d\n", ret);
>> +		return ret;
>> +	}
>> +	msleep(20);
>> +
>> +	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
>> +	if (ret < 0) {
>> +		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
>> +		return ret;
>> +	}
>> +	msleep(120);
>> +
>> +	return 0;
>> +}
>> +
>> +static int visionox_vtdr6130_prepare(struct drm_panel *panel)
>> +{
>> +	struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
>> +	struct device *dev = &ctx->dsi->dev;
>> +	int ret;
>> +
>> +	if (ctx->prepared)
>> +		return 0;
>> +
>> +	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
>> +				    ctx->supplies);
>> +	if (ret < 0)
>> +		return ret;
>> +
>> +	visionox_vtdr6130_reset(ctx);
>> +
>> +	ret = visionox_vtdr6130_on(ctx);
>> +	if (ret < 0) {
>> +		dev_err(dev, "Failed to initialize panel: %d\n", ret);
>> +		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
>> +		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
>> +		return ret;
>> +	}
>> +
>> +	ctx->prepared = true;
>> +	return 0;
>> +}
>> +
>> +static int visionox_vtdr6130_unprepare(struct drm_panel *panel)
>> +{
>> +	struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
>> +	struct device *dev = &ctx->dsi->dev;
>> +	int ret;
>> +
>> +	if (!ctx->prepared)
>> +		return 0;
>> +
>> +	ret = visionox_vtdr6130_off(ctx);
>> +	if (ret < 0)
>> +		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
>> +
>> +	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
>> +
>> +	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
>> +
>> +	ctx->prepared = false;
>> +	return 0;
>> +}
>> +
>> +static const struct drm_display_mode visionox_vtdr6130_mode = {
>> +	.clock = (1080 + 20 + 2 + 20) * (2400 + 20 + 2 + 18) * 144 / 1000,
>> +	.hdisplay = 1080,
>> +	.hsync_start = 1080 + 20,
>> +	.hsync_end = 1080 + 20 + 2,
>> +	.htotal = 1080 + 20 + 2 + 20,
>> +	.vdisplay = 2400,
>> +	.vsync_start = 2400 + 20,
>> +	.vsync_end = 2400 + 20 + 2,
>> +	.vtotal = 2400 + 20 + 2 + 18,
>> +	.width_mm = 71,
>> +	.height_mm = 157,
>> +};
>> +
>> +static int visionox_vtdr6130_get_modes(struct drm_panel *panel,
>> +				       struct drm_connector *connector)
>> +{
>> +	struct drm_display_mode *mode;
>> +
>> +	mode = drm_mode_duplicate(connector->dev, &visionox_vtdr6130_mode);
>> +	if (!mode)
>> +		return -ENOMEM;
>> +
>> +	drm_mode_set_name(mode);
>> +
>> +	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
>> +	connector->display_info.width_mm = mode->width_mm;
>> +	connector->display_info.height_mm = mode->height_mm;
>> +	drm_mode_probed_add(connector, mode);
>> +
>> +	return 1;
>> +}
>> +
>> +static const struct drm_panel_funcs visionox_vtdr6130_panel_funcs = {
>> +	.prepare = visionox_vtdr6130_prepare,
>> +	.unprepare = visionox_vtdr6130_unprepare,
>> +	.get_modes = visionox_vtdr6130_get_modes,
>> +};
>> +
>> +static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl)
>> +{
>> +	struct mipi_dsi_device *dsi = bl_get_data(bl);
>> +	u16 brightness = backlight_get_brightness(bl);
>> +	/* Panel needs big-endian order of brightness value */
>> +	u8 payload[2] = { brightness >> 8, brightness & 0xff };
>> +	int ret;
>> +
>> +	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
>> +				 payload, sizeof(payload));
>> +	if (ret < 0)
>> +		return ret;
>> +
>> +	return 0;
>> +}
>> +
>> +static const struct backlight_ops visionox_vtdr6130_bl_ops = {
>> +	.update_status = visionox_vtdr6130_bl_update_status,
>> +};
>> +
>> +static struct backlight_device *
>> +visionox_vtdr6130_create_backlight(struct mipi_dsi_device *dsi)
>> +{
>> +	struct device *dev = &dsi->dev;
>> +	const struct backlight_properties props = {
>> +		.type = BACKLIGHT_RAW,
>> +		.brightness = 4095,
>> +		.max_brightness = 4095,
>> +	};
>> +
>> +	return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
>> +					      &visionox_vtdr6130_bl_ops, &props);
>> +}
>> +
>> +static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi)
>> +{
>> +	struct device *dev = &dsi->dev;
>> +	struct visionox_vtdr6130 *ctx;
>> +	int ret;
>> +
>> +	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
>> +	if (!ctx)
>> +		return -ENOMEM;
>> +
>> +	ctx->supplies[0].supply = "vddio";
>> +	ctx->supplies[1].supply = "vci";
>> +	ctx->supplies[2].supply = "vdd";
>> +
>> +	ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies),
>> +				      ctx->supplies);
>> +	if (ret < 0)
>> +		return ret;
>> +
>> +	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
>> +	if (IS_ERR(ctx->reset_gpio))
>> +		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
>> +				     "Failed to get reset-gpios\n");
>> +
>> +	ctx->dsi = dsi;
>> +	mipi_dsi_set_drvdata(dsi, ctx);
>> +
>> +	dsi->lanes = 4;
>> +	dsi->format = MIPI_DSI_FMT_RGB888;
>> +	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET |
>> +			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
>> +
>> +	drm_panel_init(&ctx->panel, dev, &visionox_vtdr6130_panel_funcs,
>> +		       DRM_MODE_CONNECTOR_DSI);
>> +
>> +	ctx->panel.backlight = visionox_vtdr6130_create_backlight(dsi);
>> +	if (IS_ERR(ctx->panel.backlight))
>> +		return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
>> +				     "Failed to create backlight\n");
>> +
>> +	drm_panel_add(&ctx->panel);
>> +
>> +	ret = mipi_dsi_attach(dsi);
>> +	if (ret < 0) {
>> +		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
>> +		drm_panel_remove(&ctx->panel);
>> +		return ret;
>> +	}
>> +
>> +	return 0;
>> +}
>> +
>> +static void visionox_vtdr6130_remove(struct mipi_dsi_device *dsi)
>> +{
>> +	struct visionox_vtdr6130 *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 of_device_id visionox_vtdr6130_of_match[] = {
>> +	{ .compatible = "visionox,vtdr6130" },
>> +	{ /* sentinel */ }
>> +};
>> +MODULE_DEVICE_TABLE(of, visionox_vtdr6130_of_match);
>> +
>> +static struct mipi_dsi_driver visionox_vtdr6130_driver = {
>> +	.probe = visionox_vtdr6130_probe,
>> +	.remove = visionox_vtdr6130_remove,
>> +	.driver = {
>> +		.name = "panel-visionox-vtdr6130",
>> +		.of_match_table = visionox_vtdr6130_of_match,
>> +	},
>> +};
>> +module_mipi_dsi_driver(visionox_vtdr6130_driver);
>> +
>> +MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");
>> +MODULE_DESCRIPTION("Panel driver for the Visionox VTDR6130 AMOLED DSI panel");
>> +MODULE_LICENSE("GPL");
>>
>> -- 
>> 2.34.1

Re: [PATCH v2 2/2] drm/panel: add visionox vtdr6130 DSI panel driver

[Daniel Vetter]

On Mon, Jan 09, 2023 at 08:26:44PM +0100, Neil Armstrong wrote:
> On 09/01/2023 19:32, Sam Ravnborg wrote:
> > Hi Neil,
> > 
> > On Mon, Jan 09, 2023 at 09:49:30AM +0100, Neil Armstrong wrote:
> > > Add support for the 1080x2400 Visionox VTDR6130 AMOLED DSI panel
> > > found on the Qualcomm SM8550 MTP board.
> > > 
> > > By default the the panel is configured to work with DSI compressed
> > > streams, but can work in uncompressed video mode since 1080x2400 in
> > > RGB888 fits in the 4 DSI lanes bandwidth.
> > > 
> > > While display compression is preferred for performance and power
> > > reasons, let's start with the uncompressed video mode support and
> > > add the DSC support later on.
> > > 
> > > Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
> > 
> > One small nit about sorting include files.
> > At least I consider them wrongly sorted. Up to you if you fix it while
> > applying or you keep it as is.
> 
> Indeed I also consider it wrong, I'll sort them while applying, thanks !

This goes boom on my gcc:

drivers/gpu/drm/panel/panel-visionox-vtdr6130.c: In function ‘visionox_vtdr6130_bl_update_status’:
drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:249:12: error: ‘ret’ is used uninitialized [-Werror=uninitialized]
  249 |         if (ret < 0)
      |            ^
drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:246:13: note: ‘ret’ was declared here
  246 |         int ret;
      |             ^~~


Cheers, Daniel

> 
> > 
> > Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> > 
> > 
> > 	Sam
> > 
> > > ---
> > >   drivers/gpu/drm/panel/Kconfig                   |   8 +
> > >   drivers/gpu/drm/panel/Makefile                  |   1 +
> > >   drivers/gpu/drm/panel/panel-visionox-vtdr6130.c | 358 ++++++++++++++++++++++++
> > >   3 files changed, 367 insertions(+)
> > > 
> > > diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> > > index 737edcdf9eef..fd1d7e6f536b 100644
> > > --- a/drivers/gpu/drm/panel/Kconfig
> > > +++ b/drivers/gpu/drm/panel/Kconfig
> > > @@ -717,6 +717,14 @@ config DRM_PANEL_VISIONOX_RM69299
> > >   	  Say Y here if you want to enable support for Visionox
> > >   	  RM69299  DSI Video Mode panel.
> > > +config DRM_PANEL_VISIONOX_VTDR6130
> > > +	tristate "Visionox VTDR6130"
> > > +	depends on OF
> > > +	depends on DRM_MIPI_DSI
> > > +	help
> > > +	  Say Y here if you want to enable support for Visionox
> > > +	  VTDR6130 1080x2400 AMOLED DSI panel.
> > > +
> > >   config DRM_PANEL_WIDECHIPS_WS2401
> > >   	tristate "Widechips WS2401 DPI panel driver"
> > >   	depends on SPI && GPIOLIB
> > > diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
> > > index f8f9d9f6a307..1966404fcf7a 100644
> > > --- a/drivers/gpu/drm/panel/Makefile
> > > +++ b/drivers/gpu/drm/panel/Makefile
> > > @@ -73,5 +73,6 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
> > >   obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
> > >   obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o
> > >   obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o
> > > +obj-$(CONFIG_DRM_PANEL_VISIONOX_VTDR6130) += panel-visionox-vtdr6130.o
> > >   obj-$(CONFIG_DRM_PANEL_WIDECHIPS_WS2401) += panel-widechips-ws2401.o
> > >   obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o
> > > diff --git a/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
> > > new file mode 100644
> > > index 000000000000..c107c88b22b4
> > > --- /dev/null
> > > +++ b/drivers/gpu/drm/panel/panel-visionox-vtdr6130.c
> > > @@ -0,0 +1,358 @@
> > > +// SPDX-License-Identifier: GPL-2.0-only
> > > +// Copyright (c) 2023, Linaro Limited
> > > +
> > > +#include <linux/backlight.h>
> > > +#include <linux/delay.h>
> > > +#include <linux/gpio/consumer.h>
> > > +#include <linux/regulator/consumer.h>
> > > +#include <linux/module.h>
> > > +#include <linux/of.h>
> > > +
> > > +#include <drm/drm_mipi_dsi.h>
> > > +#include <drm/drm_modes.h>
> > > +#include <drm/drm_panel.h>
> > > +#include <drm/display/drm_dsc.h>
> > Sort - display/, before drm_
> > > +
> > > +#include <video/mipi_display.h>
> > > +
> > > +struct visionox_vtdr6130 {
> > > +	struct drm_panel panel;
> > > +	struct mipi_dsi_device *dsi;
> > > +	struct gpio_desc *reset_gpio;
> > > +	struct regulator_bulk_data supplies[3];
> > > +	bool prepared;
> > > +};
> > > +
> > > +static inline struct visionox_vtdr6130 *to_visionox_vtdr6130(struct drm_panel *panel)
> > > +{
> > > +	return container_of(panel, struct visionox_vtdr6130, panel);
> > > +}
> > > +
> > > +static void visionox_vtdr6130_reset(struct visionox_vtdr6130 *ctx)
> > > +{
> > > +	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
> > > +	usleep_range(10000, 11000);
> > > +	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
> > > +	usleep_range(10000, 11000);
> > > +	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
> > > +	usleep_range(10000, 11000);
> > > +}
> > > +
> > > +static int visionox_vtdr6130_on(struct visionox_vtdr6130 *ctx)
> > > +{
> > > +	struct mipi_dsi_device *dsi = ctx->dsi;
> > > +	struct device *dev = &dsi->dev;
> > > +	int ret;
> > > +
> > > +	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
> > > +
> > > +	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
> > > +	if (ret)
> > > +		return ret;
> > > +
> > > +	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
> > > +	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0x00, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0x59, 0x09);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0x6c, 0x01);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0x6d, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0x6f, 0x01);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0x70,
> > > +			       0x12, 0x00, 0x00, 0xab, 0x30, 0x80, 0x09, 0x60, 0x04,
> > > +			       0x38, 0x00, 0x28, 0x02, 0x1c, 0x02, 0x1c, 0x02, 0x00,
> > > +			       0x02, 0x0e, 0x00, 0x20, 0x03, 0xdd, 0x00, 0x07, 0x00,
> > > +			       0x0c, 0x02, 0x77, 0x02, 0x8b, 0x18, 0x00, 0x10, 0xf0,
> > > +			       0x07, 0x10, 0x20, 0x00, 0x06, 0x0f, 0x0f, 0x33, 0x0e,
> > > +			       0x1c, 0x2a, 0x38, 0x46, 0x54, 0x62, 0x69, 0x70, 0x77,
> > > +			       0x79, 0x7b, 0x7d, 0x7e, 0x02, 0x02, 0x22, 0x00, 0x2a,
> > > +			       0x40, 0x2a, 0xbe, 0x3a, 0xfc, 0x3a, 0xfa, 0x3a, 0xf8,
> > > +			       0x3b, 0x38, 0x3b, 0x78, 0x3b, 0xb6, 0x4b, 0xb6, 0x4b,
> > > +			       0xf4, 0x4b, 0xf4, 0x6c, 0x34, 0x84, 0x74, 0x00, 0x00,
> > > +			       0x00, 0x00, 0x00, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x10);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xb1,
> > > +			       0x01, 0x38, 0x00, 0x14, 0x00, 0x1c, 0x00, 0x01, 0x66,
> > > +			       0x00, 0x14, 0x00, 0x14, 0x00, 0x01, 0x66, 0x00, 0x14,
> > > +			       0x05, 0xcc, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x13);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xce,
> > > +			       0x09, 0x11, 0x09, 0x11, 0x08, 0xc1, 0x07, 0xfa, 0x05,
> > > +			       0xa4, 0x00, 0x3c, 0x00, 0x34, 0x00, 0x24, 0x00, 0x0c,
> > > +			       0x00, 0x0c, 0x04, 0x00, 0x35);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x14);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xb2, 0x03, 0x33);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xb4,
> > > +			       0x00, 0x33, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00,
> > > +			       0x3e, 0x00, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xb5,
> > > +			       0x00, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x06, 0x01);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xb9, 0x00, 0x00, 0x08, 0x09, 0x09, 0x09);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xbc,
> > > +			       0x10, 0x00, 0x00, 0x06, 0x11, 0x09, 0x3b, 0x09, 0x47,
> > > +			       0x09, 0x47, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xbe,
> > > +			       0x10, 0x10, 0x00, 0x08, 0x22, 0x09, 0x19, 0x09, 0x25,
> > > +			       0x09, 0x25, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x80);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x14);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xfa, 0x08, 0x08, 0x08);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x81);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x05);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x0f);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xaa, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x82);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xf9, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x51, 0x83);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x04);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xf8, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0x65, 0x01);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x9a);
> > > +	mipi_dsi_dcs_write_seq(dsi, 0xff, 0x5a, 0x00);
> > > +
> > > +	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
> > > +	if (ret < 0) {
> > > +		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
> > > +		return ret;
> > > +	}
> > > +	msleep(120);
> > > +
> > > +	ret = mipi_dsi_dcs_set_display_on(dsi);
> > > +	if (ret < 0) {
> > > +		dev_err(dev, "Failed to set display on: %d\n", ret);
> > > +		return ret;
> > > +	}
> > > +	msleep(20);
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +static int visionox_vtdr6130_off(struct visionox_vtdr6130 *ctx)
> > > +{
> > > +	struct mipi_dsi_device *dsi = ctx->dsi;
> > > +	struct device *dev = &dsi->dev;
> > > +	int ret;
> > > +
> > > +	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
> > > +
> > > +	ret = mipi_dsi_dcs_set_display_off(dsi);
> > > +	if (ret < 0) {
> > > +		dev_err(dev, "Failed to set display off: %d\n", ret);
> > > +		return ret;
> > > +	}
> > > +	msleep(20);
> > > +
> > > +	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
> > > +	if (ret < 0) {
> > > +		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
> > > +		return ret;
> > > +	}
> > > +	msleep(120);
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +static int visionox_vtdr6130_prepare(struct drm_panel *panel)
> > > +{
> > > +	struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
> > > +	struct device *dev = &ctx->dsi->dev;
> > > +	int ret;
> > > +
> > > +	if (ctx->prepared)
> > > +		return 0;
> > > +
> > > +	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
> > > +				    ctx->supplies);
> > > +	if (ret < 0)
> > > +		return ret;
> > > +
> > > +	visionox_vtdr6130_reset(ctx);
> > > +
> > > +	ret = visionox_vtdr6130_on(ctx);
> > > +	if (ret < 0) {
> > > +		dev_err(dev, "Failed to initialize panel: %d\n", ret);
> > > +		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
> > > +		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> > > +		return ret;
> > > +	}
> > > +
> > > +	ctx->prepared = true;
> > > +	return 0;
> > > +}
> > > +
> > > +static int visionox_vtdr6130_unprepare(struct drm_panel *panel)
> > > +{
> > > +	struct visionox_vtdr6130 *ctx = to_visionox_vtdr6130(panel);
> > > +	struct device *dev = &ctx->dsi->dev;
> > > +	int ret;
> > > +
> > > +	if (!ctx->prepared)
> > > +		return 0;
> > > +
> > > +	ret = visionox_vtdr6130_off(ctx);
> > > +	if (ret < 0)
> > > +		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
> > > +
> > > +	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
> > > +
> > > +	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
> > > +
> > > +	ctx->prepared = false;
> > > +	return 0;
> > > +}
> > > +
> > > +static const struct drm_display_mode visionox_vtdr6130_mode = {
> > > +	.clock = (1080 + 20 + 2 + 20) * (2400 + 20 + 2 + 18) * 144 / 1000,
> > > +	.hdisplay = 1080,
> > > +	.hsync_start = 1080 + 20,
> > > +	.hsync_end = 1080 + 20 + 2,
> > > +	.htotal = 1080 + 20 + 2 + 20,
> > > +	.vdisplay = 2400,
> > > +	.vsync_start = 2400 + 20,
> > > +	.vsync_end = 2400 + 20 + 2,
> > > +	.vtotal = 2400 + 20 + 2 + 18,
> > > +	.width_mm = 71,
> > > +	.height_mm = 157,
> > > +};
> > > +
> > > +static int visionox_vtdr6130_get_modes(struct drm_panel *panel,
> > > +				       struct drm_connector *connector)
> > > +{
> > > +	struct drm_display_mode *mode;
> > > +
> > > +	mode = drm_mode_duplicate(connector->dev, &visionox_vtdr6130_mode);
> > > +	if (!mode)
> > > +		return -ENOMEM;
> > > +
> > > +	drm_mode_set_name(mode);
> > > +
> > > +	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> > > +	connector->display_info.width_mm = mode->width_mm;
> > > +	connector->display_info.height_mm = mode->height_mm;
> > > +	drm_mode_probed_add(connector, mode);
> > > +
> > > +	return 1;
> > > +}
> > > +
> > > +static const struct drm_panel_funcs visionox_vtdr6130_panel_funcs = {
> > > +	.prepare = visionox_vtdr6130_prepare,
> > > +	.unprepare = visionox_vtdr6130_unprepare,
> > > +	.get_modes = visionox_vtdr6130_get_modes,
> > > +};
> > > +
> > > +static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl)
> > > +{
> > > +	struct mipi_dsi_device *dsi = bl_get_data(bl);
> > > +	u16 brightness = backlight_get_brightness(bl);
> > > +	/* Panel needs big-endian order of brightness value */
> > > +	u8 payload[2] = { brightness >> 8, brightness & 0xff };
> > > +	int ret;
> > > +
> > > +	ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
> > > +				 payload, sizeof(payload));
> > > +	if (ret < 0)
> > > +		return ret;
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +static const struct backlight_ops visionox_vtdr6130_bl_ops = {
> > > +	.update_status = visionox_vtdr6130_bl_update_status,
> > > +};
> > > +
> > > +static struct backlight_device *
> > > +visionox_vtdr6130_create_backlight(struct mipi_dsi_device *dsi)
> > > +{
> > > +	struct device *dev = &dsi->dev;
> > > +	const struct backlight_properties props = {
> > > +		.type = BACKLIGHT_RAW,
> > > +		.brightness = 4095,
> > > +		.max_brightness = 4095,
> > > +	};
> > > +
> > > +	return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
> > > +					      &visionox_vtdr6130_bl_ops, &props);
> > > +}
> > > +
> > > +static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi)
> > > +{
> > > +	struct device *dev = &dsi->dev;
> > > +	struct visionox_vtdr6130 *ctx;
> > > +	int ret;
> > > +
> > > +	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
> > > +	if (!ctx)
> > > +		return -ENOMEM;
> > > +
> > > +	ctx->supplies[0].supply = "vddio";
> > > +	ctx->supplies[1].supply = "vci";
> > > +	ctx->supplies[2].supply = "vdd";
> > > +
> > > +	ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies),
> > > +				      ctx->supplies);
> > > +	if (ret < 0)
> > > +		return ret;
> > > +
> > > +	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
> > > +	if (IS_ERR(ctx->reset_gpio))
> > > +		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
> > > +				     "Failed to get reset-gpios\n");
> > > +
> > > +	ctx->dsi = dsi;
> > > +	mipi_dsi_set_drvdata(dsi, ctx);
> > > +
> > > +	dsi->lanes = 4;
> > > +	dsi->format = MIPI_DSI_FMT_RGB888;
> > > +	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET |
> > > +			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
> > > +
> > > +	drm_panel_init(&ctx->panel, dev, &visionox_vtdr6130_panel_funcs,
> > > +		       DRM_MODE_CONNECTOR_DSI);
> > > +
> > > +	ctx->panel.backlight = visionox_vtdr6130_create_backlight(dsi);
> > > +	if (IS_ERR(ctx->panel.backlight))
> > > +		return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
> > > +				     "Failed to create backlight\n");
> > > +
> > > +	drm_panel_add(&ctx->panel);
> > > +
> > > +	ret = mipi_dsi_attach(dsi);
> > > +	if (ret < 0) {
> > > +		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
> > > +		drm_panel_remove(&ctx->panel);
> > > +		return ret;
> > > +	}
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +static void visionox_vtdr6130_remove(struct mipi_dsi_device *dsi)
> > > +{
> > > +	struct visionox_vtdr6130 *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 of_device_id visionox_vtdr6130_of_match[] = {
> > > +	{ .compatible = "visionox,vtdr6130" },
> > > +	{ /* sentinel */ }
> > > +};
> > > +MODULE_DEVICE_TABLE(of, visionox_vtdr6130_of_match);
> > > +
> > > +static struct mipi_dsi_driver visionox_vtdr6130_driver = {
> > > +	.probe = visionox_vtdr6130_probe,
> > > +	.remove = visionox_vtdr6130_remove,
> > > +	.driver = {
> > > +		.name = "panel-visionox-vtdr6130",
> > > +		.of_match_table = visionox_vtdr6130_of_match,
> > > +	},
> > > +};
> > > +module_mipi_dsi_driver(visionox_vtdr6130_driver);
> > > +
> > > +MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");
> > > +MODULE_DESCRIPTION("Panel driver for the Visionox VTDR6130 AMOLED DSI panel");
> > > +MODULE_LICENSE("GPL");
> > > 
> > > -- 
> > > 2.34.1
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

Re: [PATCH v2 0/2] drm/panel: add support for the Visionox VTDR6130 AMOLED DSI panel

[Neil Armstrong]

Hi,

On Mon, 09 Jan 2023 09:49:29 +0100, Neil Armstrong wrote:
> Add support for the 1080x2400 Visionox VTDR6130 AMOLED DSI panel
> found on the Qualcomm SM8550 MTP board.
> 
> By default the the panel is configured to work with DSI compressed
> streams, but can work in uncompressed video mode since 1080x2400 in
> RGB888 fits in the 4 DSI lanes bandwidth.
> 
> [...]

Thanks, Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next)

[1/2] dt-bindings: display: panel: document the Visionox VTDR6130 AMOLED DSI Panel bindings
      https://cgit.freedesktop.org/drm/drm-misc/commit/?id=ef85db911134d103a7f713eae6689dbb15c3f96a
[2/2] drm/panel: add visionox vtdr6130 DSI panel driver
      https://cgit.freedesktop.org/drm/drm-misc/commit/?id=2349183d32d83a7635baa804934813bcad13fd62

-- 
Neil