[PATCH v6 0/3] Add Samsung S6E3HA8 panel driver

[PATCH v6 0/3] Add Samsung S6E3HA8 panel driver

[Dzmitry Sankouski]

The s6e3ha8 is a 1440x2960 DPI AMOLED display panel from Samsung Mobile
  Displays (SMD)

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
---
Changes in v6:
- add new patch with mipi_dsi_compression_mode_multi function
- Link to v5: https://lore.kernel.org/r/20240926-starqltechn_integration_upstream-v5-0-1cb0e43e623f@gmail.com

Changes in v5:
- Split patchset per subsystem
- Link to v4: https://lore.kernel.org/r/20240913-starqltechn_integration_upstream-v4-0-2d2efd5c5877@gmail.com

---
Dzmitry Sankouski (3):
      drm/mipi-dsi: add mipi_dsi_compression_mode_multi
      dt-bindings: panel: add Samsung s6e3ha8
      drm/panel: Add support for S6E3HA8 panel driver

 Documentation/devicetree/bindings/display/panel/samsung,s6e3ha8.yaml |  75 +++++++++++++++++++++
 MAINTAINERS                                                          |   6 ++
 drivers/gpu/drm/drm_mipi_dsi.c                                       |  16 +++++
 drivers/gpu/drm/panel/Kconfig                                        |   7 ++
 drivers/gpu/drm/panel/Makefile                                       |   1 +
 drivers/gpu/drm/panel/panel-samsung-s6e3ha8.c                        | 342 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/drm/drm_mipi_dsi.h                                           |   2 +
 7 files changed, 449 insertions(+)
---
base-commit: 58ca61c1a866bfdaa5e19fb19a2416764f847d75
change-id: 20240617-starqltechn_integration_upstream-bc86850b2fe3

Best regards,
-- 
Dzmitry Sankouski <dsankouski@gmail.com>

[PATCH v6 1/3] drm/mipi-dsi: add mipi_dsi_compression_mode_multi

[Dzmitry Sankouski]

mipi_dsi_compression_mode_multi can help with
error handling.

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
---
 drivers/gpu/drm/drm_mipi_dsi.c | 16 ++++++++++++++++
 include/drm/drm_mipi_dsi.h     |  2 ++
 2 files changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 2bc3973d35a1..d8ee74701f1e 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -1520,6 +1520,22 @@ void mipi_dsi_compression_mode_ext_multi(struct mipi_dsi_multi_context *ctx,
 }
 EXPORT_SYMBOL(mipi_dsi_compression_mode_ext_multi);
 
+/**
+ * mipi_dsi_compression_mode_multi() - enable/disable DSC on the peripheral
+ * @dsi: DSI peripheral device
+ * @enable: Whether to enable or disable the DSC
+ *
+ * Enable or disable Display Stream Compression on the peripheral using the
+ * default Picture Parameter Set and VESA DSC 1.1 algorithm.
+ */
+void mipi_dsi_compression_mode_multi(struct mipi_dsi_multi_context *ctx,
+				     bool enable)
+{
+	return mipi_dsi_compression_mode_ext_multi(ctx, enable,
+						   MIPI_DSI_COMPRESSION_DSC, 0);
+}
+EXPORT_SYMBOL(mipi_dsi_compression_mode_multi);
+
 /**
  * mipi_dsi_dcs_nop_multi() - send DCS NOP packet
  * @ctx: Context for multiple DSI transactions
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index f725f8654611..94400a78031f 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -280,6 +280,8 @@ void mipi_dsi_compression_mode_ext_multi(struct mipi_dsi_multi_context *ctx,
 					 bool enable,
 					 enum mipi_dsi_compression_algo algo,
 					 unsigned int pps_selector);
+void mipi_dsi_compression_mode_multi(struct mipi_dsi_multi_context *ctx,
+				     bool enable);
 void mipi_dsi_picture_parameter_set_multi(struct mipi_dsi_multi_context *ctx,
 					  const struct drm_dsc_picture_parameter_set *pps);
 

-- 
2.39.2

[PATCH v6 2/3] dt-bindings: panel: add Samsung s6e3ha8

[Dzmitry Sankouski]

Add binding for the Samsung s6e3ha8 panel found in the Samsung S9.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
---
Changes for v5:
- fix required properties order
- fix example indentation

Changes in v4:
- change dts example intendation from tabs
 to spaces
- remove reset-gpios description
---
 Documentation/devicetree/bindings/display/panel/samsung,s6e3ha8.yaml | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 MAINTAINERS                                                          |  5 +++++
 2 files changed, 80 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha8.yaml b/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha8.yaml
new file mode 100644
index 000000000000..05a78429aaea
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha8.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/samsung,s6e3ha8.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung s6e3ha8 AMOLED DSI panel
+
+description: The s6e3ha8 is a 1440x2960 DPI display panel from Samsung Mobile
+  Displays (SMD).
+
+maintainers:
+  - Dzmitry Sankouski <dsankouski@gmail.com>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: samsung,s6e3ha8
+
+  reg:
+    maxItems: 1
+
+  reset-gpios: true
+
+  port: true
+
+  vdd3-supply:
+    description: VDD regulator
+
+  vci-supply:
+    description: VCI regulator
+
+  vddr-supply:
+    description: VDDR regulator
+
+required:
+  - compatible
+  - reset-gpios
+  - vdd3-supply
+  - vci-supply
+  - vddr-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "samsung,s6e3ha8";
+            reg = <0>;
+            vci-supply = <&s2dos05_ldo4>;
+            vddr-supply = <&s2dos05_buck1>;
+            vdd3-supply = <&s2dos05_ldo1>;
+            te-gpios = <&tlmm 10 GPIO_ACTIVE_HIGH>;
+            reset-gpios = <&tlmm 6 GPIO_ACTIVE_HIGH>;
+            pinctrl-0 = <&sde_dsi_active &sde_te_active_sleep>;
+            pinctrl-1 = <&sde_dsi_suspend &sde_te_active_sleep>;
+            pinctrl-names = "default", "sleep";
+
+            port {
+                panel_in: endpoint {
+                    remote-endpoint = <&mdss_dsi0_out>;
+                };
+            };
+        };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 84086d47db69..ccc3cf5114c6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7389,6 +7389,11 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/display/panel/samsung,s6d7aa0.yaml
 F:	drivers/gpu/drm/panel/panel-samsung-s6d7aa0.c
 
+DRM DRIVER FOR SAMSUNG S6E3HA8 PANELS
+M:	Dzmitry Sankouski <dsankouski@gmail.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/display/panel/samsung,s6e3ha8.yaml
+
 DRM DRIVER FOR SITRONIX ST7586 PANELS
 M:	David Lechner <david@lechnology.com>
 S:	Maintained

-- 
2.39.2

[PATCH v6 3/3] drm/panel: Add support for S6E3HA8 panel driver

[Dzmitry Sankouski]

Add support for MIPI-DSI based S6E3HA8 AMOLED panel
driver. This panel has 1440x2960 resolution, 5.8-inch physical
size, and can be found in starqltechn device.
Brightness regulation is not yet supported.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
---
Changes for v6:
- return ctx.accum_err instead of 0 where possible
- s6e3ha8_amb577px01_wqhd_on: arrange code blocks by
  key unlock / lock actions
- more *_multi functions
- switch to devm_regulator_bulk_get_const

Changes for v5:
- return ctx.accum_err instead of 0 where possible
- switch mipi_dsi_picture_parameter_set to _multi
- replace msleep with mipi_dsi_msleep

Changes in v4:
- inline power related functions
- rework driver using new mipi_dsi_dcs_write_seq_multi macro
- use drm_connector_helper_get_modes_fixed for modes
- remove excessive compression setting
---
 MAINTAINERS                                   |   1 +
 drivers/gpu/drm/panel/Kconfig                 |   7 +++
 drivers/gpu/drm/panel/Makefile                |   1 +
 drivers/gpu/drm/panel/panel-samsung-s6e3ha8.c | 342 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 351 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index ccc3cf5114c6..0f3f767afa4c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7393,6 +7393,7 @@ DRM DRIVER FOR SAMSUNG S6E3HA8 PANELS
 M:	Dzmitry Sankouski <dsankouski@gmail.com>
 S:	Maintained
 F:	Documentation/devicetree/bindings/display/panel/samsung,s6e3ha8.yaml
+F:	drivers/gpu/drm/panel/panel-samsung-s6e3ha8.c
 
 DRM DRIVER FOR SITRONIX ST7586 PANELS
 M:	David Lechner <david@lechnology.com>
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 1077fd2307d4..7d3c9cbfe835 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -689,6 +689,13 @@ config DRM_PANEL_SAMSUNG_S6E3HA2
 	depends on BACKLIGHT_CLASS_DEVICE
 	select VIDEOMODE_HELPERS
 
+config DRM_PANEL_SAMSUNG_S6E3HA8
+	tristate "Samsung S6E3HA8 DSI video mode panel"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	select VIDEOMODE_HELPERS
+
 config DRM_PANEL_SAMSUNG_S6E63J0X03
 	tristate "Samsung S6E63J0X03 DSI command mode panel"
 	depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 987a08702410..8ee28f5a2213 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -70,6 +70,7 @@ obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D27A1) += panel-samsung-s6d27a1.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D7AA0) += panel-samsung-s6d7aa0.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3FA7) += panel-samsung-s6e3fa7.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
+obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA8) += panel-samsung-s6e3ha8.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63M0) += panel-samsung-s6e63m0.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63M0_SPI) += panel-samsung-s6e63m0-spi.o
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e3ha8.c b/drivers/gpu/drm/panel/panel-samsung-s6e3ha8.c
new file mode 100644
index 000000000000..76b5a6ea610d
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e3ha8.c
@@ -0,0 +1,342 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
+//	Copyright (c) 2013, The Linux Foundation. All rights reserved.
+// Copyright (c) 2024 Dzmitry Sankouski <dsankouski@gmail.com>
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/display/drm_dsc.h>
+#include <drm/display/drm_dsc_helper.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_panel.h>
+
+struct s6e3ha8 {
+	struct drm_panel panel;
+	struct mipi_dsi_device *dsi;
+	struct drm_dsc_config dsc;
+	struct gpio_desc *reset_gpio;
+	struct regulator_bulk_data *supplies;
+};
+
+const struct regulator_bulk_data s6e3ha8_supplies[] = {
+	{ .supply = "vdd3" },
+	{ .supply = "vci" },
+	{ .supply = "vddr" },
+};
+
+static inline
+struct s6e3ha8 *to_s6e3ha8_amb577px01_wqhd(struct drm_panel *panel)
+{
+	return container_of(panel, struct s6e3ha8, panel);
+}
+
+#define s6e3ha8_test_key_on_lvl2(ctx) \
+	mipi_dsi_dcs_write_seq_multi(ctx, 0xf0, 0x5a, 0x5a)
+#define s6e3ha8_test_key_off_lvl2(ctx) \
+	mipi_dsi_dcs_write_seq_multi(ctx, 0xf0, 0xa5, 0xa5)
+#define s6e3ha8_test_key_on_lvl3(ctx) \
+	mipi_dsi_dcs_write_seq_multi(ctx, 0xfc, 0x5a, 0x5a)
+#define s6e3ha8_test_key_off_lvl3(ctx) \
+	mipi_dsi_dcs_write_seq_multi(ctx, 0xfc, 0xa5, 0xa5)
+#define s6e3ha8_test_key_on_lvl1(ctx) \
+	mipi_dsi_dcs_write_seq_multi(ctx, 0x9f, 0xa5, 0xa5)
+#define s6e3ha8_test_key_off_lvl1(ctx) \
+	mipi_dsi_dcs_write_seq_multi(ctx, 0x9f, 0x5a, 0x5a)
+#define s6e3ha8_afc_off(ctx) \
+	mipi_dsi_dcs_write_seq_multi(ctx, 0xe2, 0x00, 0x00)
+
+static void s6e3ha8_amb577px01_wqhd_reset(struct s6e3ha8 *priv)
+{
+	gpiod_set_value_cansleep(priv->reset_gpio, 1);
+	usleep_range(5000, 6000);
+	gpiod_set_value_cansleep(priv->reset_gpio, 0);
+	usleep_range(5000, 6000);
+	gpiod_set_value_cansleep(priv->reset_gpio, 1);
+	usleep_range(5000, 6000);
+}
+
+static int s6e3ha8_amb577px01_wqhd_on(struct s6e3ha8 *priv)
+{
+	struct mipi_dsi_device *dsi = priv->dsi;
+	struct mipi_dsi_multi_context ctx = { .dsi = dsi };
+
+	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+	s6e3ha8_test_key_on_lvl1(&ctx);
+
+	s6e3ha8_test_key_on_lvl2(&ctx);
+	mipi_dsi_compression_mode_multi(&ctx, true);
+	s6e3ha8_test_key_off_lvl2(&ctx);
+
+	mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
+	usleep_range(5000, 6000);
+
+	s6e3ha8_test_key_on_lvl2(&ctx);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xf2, 0x13);
+	s6e3ha8_test_key_off_lvl2(&ctx);
+	usleep_range(10000, 11000);
+
+	s6e3ha8_test_key_on_lvl2(&ctx);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xf2, 0x13);
+	s6e3ha8_test_key_off_lvl2(&ctx);
+
+	/* OMOK setting 1 (Initial setting) - Scaler Latch Setting Guide */
+	s6e3ha8_test_key_on_lvl2(&ctx);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xb0, 0x07);
+	/* latch setting 1 : Scaler on/off & address setting & PPS setting -> Image update latch */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xf2, 0x3c, 0x10);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xb0, 0x0b);
+	/* latch setting 2 : Ratio change mode -> Image update latch */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xf2, 0x30);
+	/* OMOK setting 2 - Seamless setting guide : WQHD */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x2a, 0x00, 0x00, 0x05, 0x9f); /* CASET */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x2b, 0x00, 0x00, 0x0b, 0x8f); /* PASET */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xba, 0x01); /* scaler setup : scaler off */
+	s6e3ha8_test_key_off_lvl2(&ctx);
+
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x35, 0x00); /* TE Vsync ON */
+
+	s6e3ha8_test_key_on_lvl2(&ctx);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xed, 0x4c); /* ERR_FG */
+	s6e3ha8_test_key_off_lvl2(&ctx);
+
+	s6e3ha8_test_key_on_lvl3(&ctx);
+	/* FFC Setting 897.6Mbps */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xc5, 0x0d, 0x10, 0xb4, 0x3e, 0x01);
+	s6e3ha8_test_key_off_lvl3(&ctx);
+
+	s6e3ha8_test_key_on_lvl2(&ctx);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xb9,
+				   0x00, 0xb0, 0x81, 0x09, 0x00, 0x00, 0x00,
+				   0x11, 0x03); /* TSP HSYNC Setting */
+	s6e3ha8_test_key_off_lvl2(&ctx);
+
+	s6e3ha8_test_key_on_lvl2(&ctx);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xb0, 0x03);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xf6, 0x43);
+	s6e3ha8_test_key_off_lvl2(&ctx);
+
+	s6e3ha8_test_key_on_lvl2(&ctx);
+	/* Brightness condition set */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xca,
+				   0x07, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80,
+				   0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
+				   0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
+				   0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
+				   0x80, 0x80, 0x80, 0x00, 0x00, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xb1, 0x00, 0x0c); /* AID Set : 0% */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xb5,
+				   0x19, 0xdc, 0x16, 0x01, 0x34, 0x67, 0x9a,
+				   0xcd, 0x01, 0x22, 0x33, 0x44, 0x00, 0x00,
+				   0x05, 0x55, 0xcc, 0x0c, 0x01, 0x11, 0x11,
+				   0x10); /* MPS/ELVSS Setting */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xf4, 0xeb, 0x28); /* VINT */
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xf7, 0x03); /* Gamma, LTPS(AID) update */
+	s6e3ha8_test_key_off_lvl2(&ctx);
+
+	s6e3ha8_test_key_off_lvl1(&ctx);
+
+	return ctx.accum_err;
+}
+
+static int s6e3ha8_enable(struct drm_panel *panel)
+{
+	struct s6e3ha8 *priv = to_s6e3ha8_amb577px01_wqhd(panel);
+	struct mipi_dsi_device *dsi = priv->dsi;
+	struct mipi_dsi_multi_context ctx = { .dsi = dsi };
+
+	s6e3ha8_test_key_on_lvl1(&ctx);
+	mipi_dsi_dcs_set_display_on_multi(&ctx);
+	s6e3ha8_test_key_off_lvl1(&ctx);
+
+	return ctx.accum_err;
+}
+
+static int s6e3ha8_disable(struct drm_panel *panel)
+{
+	struct s6e3ha8 *priv = to_s6e3ha8_amb577px01_wqhd(panel);
+	struct mipi_dsi_device *dsi = priv->dsi;
+	struct mipi_dsi_multi_context ctx = { .dsi = dsi };
+
+	s6e3ha8_test_key_on_lvl1(&ctx);
+	mipi_dsi_dcs_set_display_off_multi(&ctx);
+	s6e3ha8_test_key_off_lvl1(&ctx);
+	mipi_dsi_msleep(&ctx, 20);
+
+	s6e3ha8_test_key_on_lvl2(&ctx);
+	s6e3ha8_afc_off(&ctx);
+	s6e3ha8_test_key_off_lvl2(&ctx);
+
+	mipi_dsi_msleep(&ctx, 160);
+
+	return ctx.accum_err;
+}
+
+static int s6e3ha8_amb577px01_wqhd_prepare(struct drm_panel *panel)
+{
+	struct s6e3ha8 *priv = to_s6e3ha8_amb577px01_wqhd(panel);
+	struct mipi_dsi_device *dsi = priv->dsi;
+	struct mipi_dsi_multi_context ctx = { .dsi = dsi };
+	struct drm_dsc_picture_parameter_set pps;
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(s6e3ha8_supplies), priv->supplies);
+	if (ret < 0)
+		return ret;
+	mipi_dsi_msleep(&ctx, 120);
+	s6e3ha8_amb577px01_wqhd_reset(priv);
+
+	ret = s6e3ha8_amb577px01_wqhd_on(priv);
+	if (ret < 0) {
+		gpiod_set_value_cansleep(priv->reset_gpio, 1);
+		goto err;
+	}
+
+	drm_dsc_pps_payload_pack(&pps, &priv->dsc);
+
+	s6e3ha8_test_key_on_lvl1(&ctx);
+	mipi_dsi_picture_parameter_set_multi(&ctx, &pps);
+	s6e3ha8_test_key_off_lvl1(&ctx);
+
+	mipi_dsi_msleep(&ctx, 28);
+
+	return ctx.accum_err;
+err:
+	regulator_bulk_disable(ARRAY_SIZE(s6e3ha8_supplies), priv->supplies);
+	return ret;
+}
+
+static int s6e3ha8_amb577px01_wqhd_unprepare(struct drm_panel *panel)
+{
+	struct s6e3ha8 *priv = to_s6e3ha8_amb577px01_wqhd(panel);
+
+	return regulator_bulk_disable(ARRAY_SIZE(s6e3ha8_supplies), priv->supplies);
+}
+
+static const struct drm_display_mode s6e3ha8_amb577px01_wqhd_mode = {
+	.clock = (1440 + 116 + 44 + 120) * (2960 + 120 + 80 + 124) * 60 / 1000,
+	.hdisplay = 1440,
+	.hsync_start = 1440 + 116,
+	.hsync_end = 1440 + 116 + 44,
+	.htotal = 1440 + 116 + 44 + 120,
+	.vdisplay = 2960,
+	.vsync_start = 2960 + 120,
+	.vsync_end = 2960 + 120 + 80,
+	.vtotal = 2960 + 120 + 80 + 124,
+	.width_mm = 64,
+	.height_mm = 132,
+};
+
+static int s6e3ha8_amb577px01_wqhd_get_modes(struct drm_panel *panel,
+					     struct drm_connector *connector)
+{
+	return drm_connector_helper_get_modes_fixed(connector, &s6e3ha8_amb577px01_wqhd_mode);
+}
+
+static const struct drm_panel_funcs s6e3ha8_amb577px01_wqhd_panel_funcs = {
+	.prepare = s6e3ha8_amb577px01_wqhd_prepare,
+	.unprepare = s6e3ha8_amb577px01_wqhd_unprepare,
+	.get_modes = s6e3ha8_amb577px01_wqhd_get_modes,
+	.enable = s6e3ha8_enable,
+	.disable = s6e3ha8_disable,
+};
+
+static int s6e3ha8_amb577px01_wqhd_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct s6e3ha8 *priv;
+	int ret;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(s6e3ha8_supplies),
+				      s6e3ha8_supplies,
+				      &priv->supplies);
+	if (ret < 0) {
+		dev_err(dev, "failed to get regulators: %d\n", ret);
+		return ret;
+	}
+
+	priv->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(priv->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(priv->reset_gpio),
+				     "Failed to get reset-gpios\n");
+
+	priv->dsi = dsi;
+	mipi_dsi_set_drvdata(dsi, priv);
+
+	dsi->lanes = 4;
+	dsi->format = MIPI_DSI_FMT_RGB888;
+	dsi->mode_flags = MIPI_DSI_CLOCK_NON_CONTINUOUS |
+		MIPI_DSI_MODE_VIDEO_NO_HFP | MIPI_DSI_MODE_VIDEO_NO_HBP |
+		MIPI_DSI_MODE_VIDEO_NO_HSA | MIPI_DSI_MODE_NO_EOT_PACKET;
+
+	drm_panel_init(&priv->panel, dev, &s6e3ha8_amb577px01_wqhd_panel_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+	priv->panel.prepare_prev_first = true;
+
+	drm_panel_add(&priv->panel);
+
+	/* This panel only supports DSC; unconditionally enable it */
+	dsi->dsc = &priv->dsc;
+
+	priv->dsc.dsc_version_major = 1;
+	priv->dsc.dsc_version_minor = 1;
+
+	priv->dsc.slice_height = 40;
+	priv->dsc.slice_width = 720;
+	WARN_ON(1440 % priv->dsc.slice_width);
+	priv->dsc.slice_count = 1440 / priv->dsc.slice_width;
+	priv->dsc.bits_per_component = 8;
+	priv->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */
+	priv->dsc.block_pred_enable = true;
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret < 0) {
+		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+		drm_panel_remove(&priv->panel);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void s6e3ha8_amb577px01_wqhd_remove(struct mipi_dsi_device *dsi)
+{
+	struct s6e3ha8 *priv = 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(&priv->panel);
+}
+
+static const struct of_device_id s6e3ha8_amb577px01_wqhd_of_match[] = {
+	{ .compatible = "samsung,s6e3ha8" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, s6e3ha8_amb577px01_wqhd_of_match);
+
+static struct mipi_dsi_driver s6e3ha8_amb577px01_wqhd_driver = {
+	.probe = s6e3ha8_amb577px01_wqhd_probe,
+	.remove = s6e3ha8_amb577px01_wqhd_remove,
+	.driver = {
+		.name = "panel-s6e3ha8",
+		.of_match_table = s6e3ha8_amb577px01_wqhd_of_match,
+	},
+};
+module_mipi_dsi_driver(s6e3ha8_amb577px01_wqhd_driver);
+
+MODULE_AUTHOR("Dzmitry Sankouski <dsankouski@gmail.com>");
+MODULE_DESCRIPTION("DRM driver for S6E3HA8 panel");
+MODULE_LICENSE("GPL");

-- 
2.39.2

Re: [PATCH v6 1/3] drm/mipi-dsi: add mipi_dsi_compression_mode_multi

[Neil Armstrong]

On 06/10/2024 20:18, Dzmitry Sankouski wrote:
> mipi_dsi_compression_mode_multi can help with
> error handling.
> 
> Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
> ---
>   drivers/gpu/drm/drm_mipi_dsi.c | 16 ++++++++++++++++
>   include/drm/drm_mipi_dsi.h     |  2 ++
>   2 files changed, 18 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
> index 2bc3973d35a1..d8ee74701f1e 100644
> --- a/drivers/gpu/drm/drm_mipi_dsi.c
> +++ b/drivers/gpu/drm/drm_mipi_dsi.c
> @@ -1520,6 +1520,22 @@ void mipi_dsi_compression_mode_ext_multi(struct mipi_dsi_multi_context *ctx,
>   }
>   EXPORT_SYMBOL(mipi_dsi_compression_mode_ext_multi);
>   
> +/**
> + * mipi_dsi_compression_mode_multi() - enable/disable DSC on the peripheral
> + * @dsi: DSI peripheral device
> + * @enable: Whether to enable or disable the DSC
> + *
> + * Enable or disable Display Stream Compression on the peripheral using the
> + * default Picture Parameter Set and VESA DSC 1.1 algorithm.
> + */
> +void mipi_dsi_compression_mode_multi(struct mipi_dsi_multi_context *ctx,
> +				     bool enable)
> +{
> +	return mipi_dsi_compression_mode_ext_multi(ctx, enable,
> +						   MIPI_DSI_COMPRESSION_DSC, 0);
> +}
> +EXPORT_SYMBOL(mipi_dsi_compression_mode_multi);
> +
>   /**
>    * mipi_dsi_dcs_nop_multi() - send DCS NOP packet
>    * @ctx: Context for multiple DSI transactions
> diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
> index f725f8654611..94400a78031f 100644
> --- a/include/drm/drm_mipi_dsi.h
> +++ b/include/drm/drm_mipi_dsi.h
> @@ -280,6 +280,8 @@ void mipi_dsi_compression_mode_ext_multi(struct mipi_dsi_multi_context *ctx,
>   					 bool enable,
>   					 enum mipi_dsi_compression_algo algo,
>   					 unsigned int pps_selector);
> +void mipi_dsi_compression_mode_multi(struct mipi_dsi_multi_context *ctx,
> +				     bool enable);
>   void mipi_dsi_picture_parameter_set_multi(struct mipi_dsi_multi_context *ctx,
>   					  const struct drm_dsc_picture_parameter_set *pps);
>   
> 

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Re: [PATCH v6 0/3] Add Samsung S6E3HA8 panel driver

[Neil Armstrong]

Hi,

On Sun, 06 Oct 2024 21:18:18 +0300, Dzmitry Sankouski wrote:
> The s6e3ha8 is a 1440x2960 DPI AMOLED display panel from Samsung Mobile
>   Displays (SMD)
> 
> 

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

[1/3] drm/mipi-dsi: add mipi_dsi_compression_mode_multi
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/975bdea8c470cf10637c58129edaae731fec9e93
[2/3] dt-bindings: panel: add Samsung s6e3ha8
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/d891e79861cd2b424e3bd19d3301f35be13bf118
[3/3] drm/panel: Add support for S6E3HA8 panel driver
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/779679d3c1640d8f45c75b1e15831180ab2712e2

-- 
Neil

Re: [PATCH v6 1/3] drm/mipi-dsi: add mipi_dsi_compression_mode_multi

[kernel test robot]

Hi Dzmitry,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 58ca61c1a866bfdaa5e19fb19a2416764f847d75]

url:    https://github.com/intel-lab-lkp/linux/commits/Dzmitry-Sankouski/drm-mipi-dsi-add-mipi_dsi_compression_mode_multi/20241007-022151
base:   58ca61c1a866bfdaa5e19fb19a2416764f847d75
patch link:    https://lore.kernel.org/r/20241006-starqltechn_integration_upstream-v6-1-8336b9cd6c34%40gmail.com
patch subject: [PATCH v6 1/3] drm/mipi-dsi: add mipi_dsi_compression_mode_multi
config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20241009/202410092245.tfsuUllL-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241009/202410092245.tfsuUllL-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410092245.tfsuUllL-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/drm_mipi_dsi.c:1533: warning: Function parameter or struct member 'ctx' not described in 'mipi_dsi_compression_mode_multi'
>> drivers/gpu/drm/drm_mipi_dsi.c:1533: warning: Excess function parameter 'dsi' description in 'mipi_dsi_compression_mode_multi'


vim +1533 drivers/gpu/drm/drm_mipi_dsi.c

  1522	
  1523	/**
  1524	 * mipi_dsi_compression_mode_multi() - enable/disable DSC on the peripheral
  1525	 * @dsi: DSI peripheral device
  1526	 * @enable: Whether to enable or disable the DSC
  1527	 *
  1528	 * Enable or disable Display Stream Compression on the peripheral using the
  1529	 * default Picture Parameter Set and VESA DSC 1.1 algorithm.
  1530	 */
  1531	void mipi_dsi_compression_mode_multi(struct mipi_dsi_multi_context *ctx,
  1532					     bool enable)
> 1533	{
  1534		return mipi_dsi_compression_mode_ext_multi(ctx, enable,
  1535							   MIPI_DSI_COMPRESSION_DSC, 0);
  1536	}
  1537	EXPORT_SYMBOL(mipi_dsi_compression_mode_multi);
  1538	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Re: [PATCH v6 1/3] drm/mipi-dsi: add mipi_dsi_compression_mode_multi

[Neil Armstrong]

Hi,

On 09/10/2024 14:18, kernel test robot wrote:
> Hi Dzmitry,
> 
> kernel test robot noticed the following build warnings:
> 
> [auto build test WARNING on 58ca61c1a866bfdaa5e19fb19a2416764f847d75]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Dzmitry-Sankouski/drm-mipi-dsi-add-mipi_dsi_compression_mode_multi/20241007-022151
> base:   58ca61c1a866bfdaa5e19fb19a2416764f847d75
> patch link:    https://lore.kernel.org/r/20241006-starqltechn_integration_upstream-v6-1-8336b9cd6c34%40gmail.com
> patch subject: [PATCH v6 1/3] drm/mipi-dsi: add mipi_dsi_compression_mode_multi
> config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20241009/202410092245.tfsuUllL-lkp@intel.com/config)
> compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241009/202410092245.tfsuUllL-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202410092245.tfsuUllL-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
>>> drivers/gpu/drm/drm_mipi_dsi.c:1533: warning: Function parameter or struct member 'ctx' not described in 'mipi_dsi_compression_mode_multi'
>>> drivers/gpu/drm/drm_mipi_dsi.c:1533: warning: Excess function parameter 'dsi' description in 'mipi_dsi_compression_mode_multi'

I missed this, Dmitry, can you send a follow-up patch fixing the kerneldoc ?

Thanks,
Neil

> 
> 
> vim +1533 drivers/gpu/drm/drm_mipi_dsi.c
> 
>    1522	
>    1523	/**
>    1524	 * mipi_dsi_compression_mode_multi() - enable/disable DSC on the peripheral
>    1525	 * @dsi: DSI peripheral device
>    1526	 * @enable: Whether to enable or disable the DSC
>    1527	 *
>    1528	 * Enable or disable Display Stream Compression on the peripheral using the
>    1529	 * default Picture Parameter Set and VESA DSC 1.1 algorithm.
>    1530	 */
>    1531	void mipi_dsi_compression_mode_multi(struct mipi_dsi_multi_context *ctx,
>    1532					     bool enable)
>> 1533	{
>    1534		return mipi_dsi_compression_mode_ext_multi(ctx, enable,
>    1535							   MIPI_DSI_COMPRESSION_DSC, 0);
>    1536	}
>    1537	EXPORT_SYMBOL(mipi_dsi_compression_mode_multi);
>    1538	
>