[PATCH v5 00/13] Add support for PinePhone LCD panel

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Revision v5 of 6 in this series.

26 messages, 3 authors, 2020-07-01 · open the first message on its own page

[PATCH v5 00/13] Add support for PinePhone LCD panel

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:11 

This patchset adds support for the LCD panel of PinePhone.

I've tested this on PinePhone 1.0 and 1.2.

Please take a look.

thank you and regards,
  Ondrej Jirman

Changes in v5:
- rewritten on top of rocktech-jh057n00900 driver
- rocktech-jh057n00900 renamed to st7703 (controller name)
- converted rocktech-jh057n00900 bindings to yaml and extended for xbd599

Changes in v4:
- use ->type from the mode instead of hardcoding (Samuel)
- move init_sequence to ->prepare (Samuel)
- move anti-flicker delay to ->enable, explain it (Samuel)
- add enter_sleep after display_off (Samuel)
- drop ->disable (move code to ->unprepare)
- add ID bytes dumping (Linus)
  (I can't test it since allwinner DSI driver has a broken
   dcs_read function, and I didn't manage to fix it.)
- document magic bytes (Linus)
- assert reset during powerup
- cleanup powerup timings according to the datasheet

Changes in v3:
- Panel driver renamed to the name of the LCD controller
- Re-organize the driver slightly to more easily support more panels
  based on the same controller.
- Add patch to enable the touchscreen to complete the LCD support
  on PinePhone.
- Dropped the "DSI fix" patch (the driver seems to work for me without it)
- Improved brightness levels handling:
  - PinePhone 1.0 uses default levels generated by the driver
  - On PinePhone 1.1 duty cycles < 20% lead to black screen, so
    default levels can't be used. Martijn Braam came up with a
    list of duty cycle values that lead to perception of linear
    brigtness level <-> light intensity on PinePhone 1.1
- There was some feedback on v2 about this being similar to st7701.
  It's only similar in name. Most of the "user commands" are different,
  so I opted to keep this in a new driver instead of creating st770x.
  
  Anyone who likes to check the differences, here are datasheets:

  - https://megous.com/dl/tmp/ST7703_DS_v01_20160128.pdf
  - https://megous.com/dl/tmp/ST7701.pdf

Changes in v2:
- DT Example fix.
- DT Format fix.
- Raised copyright info to 2020.
- Sort panel operation functions.
- Sort inclusion.


-- For phone owners: --

There's an open question on how to set the backlight brightness values
on post 1.0 revision phone, since lower duty cycles (< 10-20%) lead
to backlight being black. It would be nice if more people can test
the various backlight levels on 1.1 and 1.2 revision with this change
in dts:

       brightness-levels = <0 1000>;
       num-interpolated-steps = <1000>;

and report at what brightness level the backlight turns on. So far it
seems this has a wide range. Lowest useable duty cycle for me is ~7%
on 1.2 and for Martijn ~20% on 1.1.

Icenowy Zheng (2):
  dt-bindings: vendor-prefixes: Add Xingbangda
  arm64: dts: sun50i-a64-pinephone: Enable LCD support on PinePhone

Ondrej Jirman (11):
  dt-bindings: panel: Convert rocktech,jh057n00900 to yaml
  dt-bindings: panel: Add compatible for Xingbangda XBD599 panel
  drm/panel: rocktech-jh057n00900: Rename the driver to st7703
  drm/panel: st7703: Rename functions from jh057n prefix to st7703
  drm/panel: st7703: Prepare for supporting multiple panels
  drm/panel: st7703: Move code specific to jh057n closer together
  drm/panel: st7703: Move generic part of init sequence to enable
    callback
  drm/panel: st7703: Add support for Xingbangda XBD599
  drm/panel: st7703: Enter sleep after display off
  drm/panel: st7703: Assert reset prior to powering down the regulators
  arm64: dts: sun50i-a64-pinephone: Add touchscreen support

 .../display/panel/rocktech,jh057n00900.txt    |  23 -
 .../display/panel/rocktech,jh057n00900.yaml   |  70 ++
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 .../allwinner/sun50i-a64-pinephone-1.1.dts    |  19 +
 .../dts/allwinner/sun50i-a64-pinephone.dtsi   |  54 ++
 drivers/gpu/drm/panel/Kconfig                 |  26 +-
 drivers/gpu/drm/panel/Makefile                |   2 +-
 .../drm/panel/panel-rocktech-jh057n00900.c    | 424 ------------
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 655 ++++++++++++++++++
 9 files changed, 814 insertions(+), 461 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt
 create mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
 delete mode 100644 drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
 create mode 100644 drivers/gpu/drm/panel/panel-sitronix-st7703.c

-- 
2.27.0


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[PATCH v5 03/13] dt-bindings: panel: Add compatible for Xingbangda XBD599 panel

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:13 

Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI LCD panel. It is based on
Sitronix ST7703 LCD controller just like rocktech,jh057n00900. It is
used in PinePhone.

Add a compatible for it.

Signed-off-by: Ondrej Jirman <redacted>
---
 .../bindings/display/panel/rocktech,jh057n00900.yaml        | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
index f97c48550741..4d43a1b36d7c 100644
--- a/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
+++ b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
@@ -18,7 +18,11 @@ allOf:
 
 properties:
   compatible:
-    const: rocktech,jh057n00900
+    enum:
+        # Rocktech JH057N00900 5.5" 720x1440 TFT LCD panel
+      - rocktech,jh057n00900
+        # Xingbangda XBD599 5.99" 720x1440 TFT LCD panel
+      - xingbangda,xbd599
 
   reg:
     maxItems: 1
-- 
2.27.0


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[PATCH v5 04/13] drm/panel: rocktech-jh057n00900: Rename the driver to st7703

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:16 

This rename is done so that the driver matches the name of the
display controller and in preparation for adding support for more
panels to the driver.

This is just a basic file rename, with no code changes.

Signed-off-by: Ondrej Jirman <redacted>
---
 drivers/gpu/drm/panel/Kconfig                 | 26 +++++++++----------
 drivers/gpu/drm/panel/Makefile                |  2 +-
 ...-jh057n00900.c => panel-sitronix-st7703.c} |  0
 3 files changed, 14 insertions(+), 14 deletions(-)
 rename drivers/gpu/drm/panel/{panel-rocktech-jh057n00900.c => panel-sitronix-st7703.c} (100%)

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 39055c1f0e2f..de2f2a452be5 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -283,19 +283,6 @@ config DRM_PANEL_RAYDIUM_RM68200
 	  Say Y here if you want to enable support for Raydium RM68200
 	  720x1280 DSI video mode panel.
 
-config DRM_PANEL_ROCKTECH_JH057N00900
-	tristate "Rocktech JH057N00900 MIPI touchscreen panel"
-	depends on OF
-	depends on DRM_MIPI_DSI
-	depends on BACKLIGHT_CLASS_DEVICE
-	help
-	  Say Y here if you want to enable support for Rocktech JH057N00900
-	  MIPI DSI panel as e.g. used in the Librem 5 devkit. It has a
-	  resolution of 720x1440 pixels, a built in backlight and touch
-	  controller.
-	  Touch input support is provided by the goodix driver and needs to be
-	  selected separately.
-
 config DRM_PANEL_RONBO_RB070D30
 	tristate "Ronbo Electronics RB070D30 panel"
 	depends on OF
@@ -395,6 +382,19 @@ config DRM_PANEL_SITRONIX_ST7701
 	  ST7701 controller for 480X864 LCD panels with MIPI/RGB/SPI
 	  system interfaces.
 
+config DRM_PANEL_SITRONIX_ST7703
+	tristate "Sitronix ST7703 based MIPI touchscreen panels"
+	depends on OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here if you want to enable support for Sitronix ST7703 based
+	  panels, souch as Rocktech JH057N00900 MIPI DSI panel as e.g. used in
+	  the Librem 5 devkit. It has a resolution of 720x1440 pixels, a built
+	  in backlight and touch controller.
+	  Touch input support is provided by the goodix driver and needs to be
+	  selected separately.
+
 config DRM_PANEL_SITRONIX_ST7789V
 	tristate "Sitronix ST7789V panel"
 	depends on OF && SPI
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index de74f282c433..e45ceac6286f 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -27,7 +27,6 @@ obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
 obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o
 obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o
 obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
-obj-$(CONFIG_DRM_PANEL_ROCKTECH_JH057N00900) += panel-rocktech-jh057n00900.o
 obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6D16D0) += panel-samsung-s6d16d0.o
@@ -41,6 +40,7 @@ obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
 obj-$(CONFIG_DRM_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
 obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o
+obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o
 obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
 obj-$(CONFIG_DRM_PANEL_SONY_ACX424AKP) += panel-sony-acx424akp.o
 obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
similarity index 100%
rename from drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
rename to drivers/gpu/drm/panel/panel-sitronix-st7703.c
-- 
2.27.0


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[PATCH v5 10/13] drm/panel: st7703: Enter sleep after display off

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:18 

The datasheet suggests to issue sleep in after display off
as a part of the panel's shutdown sequence.

Signed-off-by: Ondrej Jirman <redacted>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index 33611419059a..e771281eb547 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -394,8 +394,19 @@ static int st7703_disable(struct drm_panel *panel)
 {
 	struct st7703 *ctx = panel_to_st7703(panel);
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	int ret;
+
+	ret = mipi_dsi_dcs_set_display_off(dsi);
+	if (ret < 0)
+		DRM_DEV_ERROR(ctx->dev,
+			      "Failed to turn off the display: %d\n", ret);
 
-	return mipi_dsi_dcs_set_display_off(dsi);
+	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+	if (ret < 0)
+		DRM_DEV_ERROR(ctx->dev,
+			      "Failed to enter sleep mode: %d\n", ret);
+
+	return 0;
 }
 
 static int st7703_unprepare(struct drm_panel *panel)
-- 
2.27.0


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[PATCH v5 11/13] drm/panel: st7703: Assert reset prior to powering down the regulators

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:22 

The reset pin is inverted, so if we don't assert reset, the actual gpio
will be high and may keep driving the IO port of the panel.

Signed-off-by: Ondrej Jirman <redacted>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index e771281eb547..92930e127559 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -416,6 +416,7 @@ static int st7703_unprepare(struct drm_panel *panel)
 	if (!ctx->prepared)
 		return 0;
 
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 	regulator_disable(ctx->iovcc);
 	regulator_disable(ctx->vcc);
 	ctx->prepared = false;
-- 
2.27.0


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[PATCH v5 13/13] arm64: dts: sun50i-a64-pinephone: Add touchscreen support

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:28 

Pinephone has a Goodix GT917S capacitive touchscreen controller on
I2C0 bus. Add support for it.

Signed-off-by: Ondrej Jirman <redacted>
---
 .../dts/allwinner/sun50i-a64-pinephone.dtsi   | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
index 85a7aa5efd32..2d5694446d17 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
@@ -123,6 +123,25 @@ &ehci1 {
 	status = "okay";
 };
 
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	status = "okay";
+
+	touchscreen@5d {
+		compatible = "goodix,gt917s", "goodix,gt911";
+		reg = <0x5d>;
+		interrupt-parent = <&pio>;
+		interrupts = <7 4 IRQ_TYPE_LEVEL_HIGH>; /* PH4 */
+		irq-gpios = <&pio 7 4 GPIO_ACTIVE_HIGH>; /* PH4 */
+		reset-gpios = <&pio 7 11 GPIO_ACTIVE_HIGH>; /* PH11 */
+		AVDD28-supply = <&reg_ldo_io0>;
+		VDDIO-supply = <&reg_ldo_io0>;
+		touchscreen-size-x = <720>;
+		touchscreen-size-y = <1440>;
+	};
+};
+
 &i2c1 {
 	status = "okay";
 
-- 
2.27.0


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[PATCH v5 09/13] drm/panel: st7703: Add support for Xingbangda XBD599

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:31 

Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI LCD panel used in
PinePhone. Add support for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Ondrej Jirman <redacted>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 199 +++++++++++++++++-
 1 file changed, 197 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index cdbf7dfb4dd4..33611419059a 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -39,10 +39,11 @@
 #define ST7703_CMD_SETEXTC	 0xB9
 #define ST7703_CMD_SETMIPI	 0xBA
 #define ST7703_CMD_SETVDC	 0xBC
-#define ST7703_CMD_UNKNOWN0	 0xBF
+#define ST7703_CMD_UNKNOWN_BF	 0xBF
 #define ST7703_CMD_SETSCR	 0xC0
 #define ST7703_CMD_SETPOWER	 0xC1
 #define ST7703_CMD_SETPANEL	 0xCC
+#define ST7703_CMD_UNKNOWN_C6	 0xC6
 #define ST7703_CMD_SETGAMMA	 0xE0
 #define ST7703_CMD_SETEQ	 0xE3
 #define ST7703_CMD_SETGIP1	 0xE9
@@ -109,7 +110,7 @@ static int jh057n_init_sequence(struct st7703 *ctx)
 	msleep(20);
 
 	dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F);
-	dsi_generic_write_seq(dsi, ST7703_CMD_UNKNOWN0, 0x02, 0x11, 0x00);
+	dsi_generic_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
 	dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP1,
 			      0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12,
 			      0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
@@ -163,6 +164,199 @@ struct st7703_panel_desc jh057n00900_panel_desc = {
 	.init_sequence = jh057n_init_sequence,
 };
 
+#define dsi_dcs_write_seq(dsi, cmd, seq...) do {			\
+		static const u8 d[] = { seq };				\
+		int ret;						\
+		ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d));	\
+		if (ret < 0)						\
+			return ret;					\
+	} while (0)
+
+
+static int xbd599_init_sequence(struct st7703 *ctx)
+{
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+
+	/*
+	 * Init sequence was supplied by the panel vendor.
+	 */
+
+	/* Magic sequence to unlock user commands below. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, 0xF1, 0x12, 0x83);
+
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI,
+			  0x33, /* VC_main = 0, Lane_Number = 3 (4 lanes) */
+			  0x81, /* DSI_LDO_SEL = 1.7V, RTERM = 90 Ohm */
+			  0x05, /* IHSRX = x6 (Low High Speed driving ability) */
+			  0xF9, /* TX_CLK_SEL = fDSICLK/16 */
+			  0x0E, /* HFP_OSC (min. HFP number in DSI mode) */
+			  0x0E, /* HBP_OSC (min. HBP number in DSI mode) */
+			  /* The rest is undocumented in ST7703 datasheet */
+			  0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			  0x44, 0x25, 0x00, 0x91, 0x0a, 0x00, 0x00, 0x02,
+			  0x4F, 0x11, 0x00, 0x00, 0x37);
+
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT,
+			  0x25, /* PCCS = 2, ECP_DC_DIV = 1/4 HSYNC */
+			  0x22, /* DT = 15ms XDK_ECP = x2 */
+			  0x20, /* PFM_DC_DIV = /1 */
+			  0x03  /* ECP_SYNC_EN = 1, VGX_SYNC_EN = 1 */);
+
+	/* RGB I/F porch timing */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF,
+			  0x10, /* VBP_RGB_GEN */
+			  0x10, /* VFP_RGB_GEN */
+			  0x05, /* DE_BP_RGB_GEN */
+			  0x05, /* DE_FP_RGB_GEN */
+			  /* The rest is undocumented in ST7703 datasheet */
+			  0x03, 0xFF,
+			  0x00, 0x00,
+			  0x00, 0x00);
+
+	/* Source driving settings. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR,
+			  0x73, /* N_POPON */
+			  0x73, /* N_NOPON */
+			  0x50, /* I_POPON */
+			  0x50, /* I_NOPON */
+			  0x00, /* SCR[31,24] */
+			  0xC0, /* SCR[23,16] */
+			  0x08, /* SCR[15,8] */
+			  0x70, /* SCR[7,0] */
+			  0x00  /* Undocumented */);
+
+	/* NVDDD_SEL = -1.8V, VDDD_SEL = out of range (possibly 1.9V?) */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E);
+
+	/*
+	 * SS_PANEL = 1 (reverse scan), GS_PANEL = 0 (normal scan)
+	 * REV_PANEL = 1 (normally black panel), BGR_PANEL = 1 (BGR)
+	 */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B);
+
+	/* Zig-Zag Type C column inversion. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
+
+	/* Set display resolution. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP,
+			  0xF0, /* NL = 240 */
+			  0x12, /* RES_V_LSB = 0, BLK_CON = VSSD,
+				 * RESO_SEL = 720RGB
+				 */
+			  0xF0  /* WHITE_GND_EN = 1 (GND),
+				 * WHITE_FRAME_SEL = 7 frames,
+				 * ISC = 0 frames
+				 */);
+
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ,
+			  0x00, /* PNOEQ */
+			  0x00, /* NNOEQ */
+			  0x0B, /* PEQGND */
+			  0x0B, /* NEQGND */
+			  0x10, /* PEQVCI */
+			  0x10, /* NEQVCI */
+			  0x00, /* PEQVCI1 */
+			  0x00, /* NEQVCI1 */
+			  0x00, /* reserved */
+			  0x00, /* reserved */
+			  0xFF, /* reserved */
+			  0x00, /* reserved */
+			  0xC0, /* ESD_DET_DATA_WHITE = 1, ESD_WHITE_EN = 1 */
+			  0x10  /* SLPIN_OPTION = 1 (no need vsync after sleep-in)
+				 * VEDIO_NO_CHECK_EN = 0
+				 * ESD_WHITE_GND_EN = 0
+				 * ESD_DET_TIME_SEL = 0 frames
+				 */);
+
+	/* Undocumented command. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_C6, 0x01, 0x00, 0xFF, 0xFF, 0x00);
+
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER,
+			  0x74, /* VBTHS, VBTLS: VGH = 17V, VBL = -11V */
+			  0x00, /* FBOFF_VGH = 0, FBOFF_VGL = 0 */
+			  0x32, /* VRP  */
+			  0x32, /* VRN */
+			  0x77, /* reserved */
+			  0xF1, /* APS = 1 (small),
+				 * VGL_DET_EN = 1, VGH_DET_EN = 1,
+				 * VGL_TURBO = 1, VGH_TURBO = 1
+				 */
+			  0xFF, /* VGH1_L_DIV, VGL1_L_DIV (1.5MHz) */
+			  0xFF, /* VGH1_R_DIV, VGL1_R_DIV (1.5MHz) */
+			  0xCC, /* VGH2_L_DIV, VGL2_L_DIV (2.6MHz) */
+			  0xCC, /* VGH2_R_DIV, VGL2_R_DIV (2.6MHz) */
+			  0x77, /* VGH3_L_DIV, VGL3_L_DIV (4.5MHz) */
+			  0x77  /* VGH3_R_DIV, VGL3_R_DIV (4.5MHz) */);
+
+	/* Reference voltage. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP,
+			  0x07, /* VREF_SEL = 4.2V */
+			  0x07  /* NVREF_SEL = 4.2V */);
+
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM,
+			  0x2C, /* VCOMDC_F = -0.67V */
+			  0x2C  /* VCOMDC_B = -0.67V */);
+
+	/* Undocumented command. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
+
+	/* This command is to set forward GIP timing. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1,
+			  0x82, 0x10, 0x06, 0x05, 0xA2, 0x0A, 0xA5, 0x12,
+			  0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
+			  0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00,
+			  0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88,
+			  0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64,
+			  0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
+			  0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+
+	/* This command is to set backward GIP timing. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2,
+			  0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			  0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88,
+			  0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13,
+			  0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
+			  0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00,
+			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0A,
+			  0xA5, 0x00, 0x00, 0x00, 0x00);
+
+	/* Adjust the gamma characteristics of the panel. */
+	dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA,
+			  0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, 0x35,
+			  0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, 0x12,
+			  0x18, 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41,
+			  0x35, 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12,
+			  0x12, 0x18);
+
+	return 0;
+}
+
+static const struct drm_display_mode xbd599_mode = {
+	.hdisplay    = 720,
+	.hsync_start = 720 + 40,
+	.hsync_end   = 720 + 40 + 40,
+	.htotal	     = 720 + 40 + 40 + 40,
+	.vdisplay    = 1440,
+	.vsync_start = 1440 + 18,
+	.vsync_end   = 1440 + 18 + 10,
+	.vtotal	     = 1440 + 18 + 10 + 17,
+	.vrefresh    = 60,
+	.clock	     = 69000,
+	.flags	     = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+	.width_mm    = 68,
+	.height_mm   = 136,
+};
+
+static const struct st7703_panel_desc xbd599_desc = {
+	.mode = &xbd599_mode,
+	.lanes = 4,
+	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
+	.format = MIPI_DSI_FMT_RGB888,
+	.init_sequence = xbd599_init_sequence,
+};
+
 static int st7703_enable(struct drm_panel *panel)
 {
 	struct st7703 *ctx = panel_to_st7703(panel);
@@ -428,6 +622,7 @@ static int st7703_remove(struct mipi_dsi_device *dsi)
 
 static const struct of_device_id st7703_of_match[] = {
 	{ .compatible = "rocktech,jh057n00900", .data = &jh057n00900_panel_desc },
+	{ .compatible = "xingbangda,xbd599", .data = &xbd599_desc },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, st7703_of_match);
-- 
2.27.0


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[PATCH v5 12/13] arm64: dts: sun50i-a64-pinephone: Enable LCD support on PinePhone

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:36 

From: Icenowy Zheng <icenowy@aosc.io>

PinePhone uses PWM backlight and a XBD599 LCD panel over DSI for
display.

Backlight levels curve was optimized by Martijn Braam using a
lux meter.

Add its device nodes.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Martijn Braam <redacted>
Signed-off-by: Ondrej Jirman <redacted>
---
 .../allwinner/sun50i-a64-pinephone-1.1.dts    | 19 ++++++++++
 .../dts/allwinner/sun50i-a64-pinephone.dtsi   | 35 +++++++++++++++++++
 2 files changed, 54 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
index 06a775c41664..3e99a87e9ce5 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.1.dts
@@ -9,3 +9,22 @@ / {
 	model = "Pine64 PinePhone Braveheart (1.1)";
 	compatible = "pine64,pinephone-1.1", "allwinner,sun50i-a64";
 };
+
+&backlight {
+	power-supply = <&reg_ldo_io0>;
+	/*
+	 * PWM backlight circuit on this PinePhone revision was changed since
+	 * 1.0, and the lowest PWM duty cycle that doesn't lead to backlight
+	 * being off is around 20%. Duty cycle for the lowest brightness level
+	 * also varries quite a bit between individual boards, so the lowest
+	 * value here was chosen as a safe default.
+	 */
+	brightness-levels = <
+		774  793  814  842
+		882  935  1003 1088
+		1192 1316 1462 1633
+		1830 2054 2309 2596
+		2916 3271 3664 4096>;
+	num-interpolated-steps = <50>;
+	default-brightness-level = <400>;
+};
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
index cefda145c3c9..85a7aa5efd32 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
@@ -16,6 +16,13 @@ aliases {
 		serial0 = &uart0;
 	};
 
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&r_pwm 0 50000 PWM_POLARITY_INVERTED>;
+		enable-gpios = <&pio 7 10 GPIO_ACTIVE_HIGH>; /* PH10 */
+		/* Backlight configuration differs per PinePhone revision. */
+	};
+
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
@@ -84,6 +91,30 @@ &dai {
 	status = "okay";
 };
 
+&de {
+	status = "okay";
+};
+
+&dphy {
+	status = "okay";
+};
+
+&dsi {
+	vcc-dsi-supply = <&reg_dldo1>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	panel@0 {
+		compatible = "xingbangda,xbd599";
+		reg = <0>;
+		reset-gpios = <&pio 3 23 GPIO_ACTIVE_LOW>; /* PD23 */
+		iovcc-supply = <&reg_dldo2>;
+		vcc-supply = <&reg_ldo_io0>;
+		backlight = <&backlight>;
+	};
+};
+
 &ehci0 {
 	status = "okay";
 };
@@ -188,6 +219,10 @@ &r_pio {
 	 */
 };
 
+&r_pwm {
+	status = "okay";
+};
+
 &r_rsb {
 	status = "okay";
 
-- 
2.27.0


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[PATCH v5 08/13] drm/panel: st7703: Move generic part of init sequence to enable callback

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:45 

Calling sleep out and display on is a controller specific part
of the initialization process. Move it out of the panel specific
initialization function to the enable callback.

Signed-off-by: Ondrej Jirman <redacted>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 33 ++++++++++---------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index d03aab10cfef..cdbf7dfb4dd4 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -84,8 +84,6 @@ static inline struct st7703 *panel_to_st7703(struct drm_panel *panel)
 static int jh057n_init_sequence(struct st7703 *ctx)
 {
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-	struct device *dev = ctx->dev;
-	int ret;
 
 	/*
 	 * Init sequence was supplied by the panel vendor. Most of the commands
@@ -136,20 +134,7 @@ static int jh057n_init_sequence(struct st7703 *ctx)
 			      0x18, 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41,
 			      0x37, 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10,
 			      0x11, 0x18);
-	msleep(20);
-
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret < 0) {
-		DRM_DEV_ERROR(dev, "Failed to exit sleep mode: %d\n", ret);
-		return ret;
-	}
-	/* Panel is operational 120 msec after reset */
-	msleep(60);
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret)
-		return ret;
 
-	DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
 	return 0;
 }
 
@@ -181,6 +166,7 @@ struct st7703_panel_desc jh057n00900_panel_desc = {
 static int st7703_enable(struct drm_panel *panel)
 {
 	struct st7703 *ctx = panel_to_st7703(panel);
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 	int ret;
 
 	ret = ctx->desc->init_sequence(ctx);
@@ -190,6 +176,23 @@ static int st7703_enable(struct drm_panel *panel)
 		return ret;
 	}
 
+	msleep(20);
+
+	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+	if (ret < 0) {
+		DRM_DEV_ERROR(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
+		return ret;
+	}
+
+	/* Panel is operational 120 msec after reset */
+	msleep(60);
+
+	ret = mipi_dsi_dcs_set_display_on(dsi);
+	if (ret)
+		return ret;
+
+	DRM_DEV_DEBUG_DRIVER(ctx->dev, "Panel init sequence done\n");
+
 	return 0;
 }
 
-- 
2.27.0


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[PATCH v5 06/13] drm/panel: st7703: Prepare for supporting multiple panels

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:47 

Parametrize the driver so that it can support more panels based
on st7703 controller.

Signed-off-by: Ondrej Jirman <redacted>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 43 +++++++++++++------
 1 file changed, 31 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index 511af659f273..08cbc316266c 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -13,6 +13,7 @@
 #include <linux/media-bus-format.h>
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
 #include <linux/regulator/consumer.h>
 
 #include <video/display_timing.h>
@@ -56,6 +57,15 @@ struct st7703 {
 	bool prepared;
 
 	struct dentry *debugfs;
+	const struct st7703_panel_desc *desc;
+};
+
+struct st7703_panel_desc {
+	const struct drm_display_mode *mode;
+	unsigned int lanes;
+	unsigned long mode_flags;
+	enum mipi_dsi_pixel_format format;
+	int (*init_sequence)(struct st7703 *ctx);
 };
 
 static inline struct st7703 *panel_to_st7703(struct drm_panel *panel)
@@ -148,7 +158,7 @@ static int st7703_enable(struct drm_panel *panel)
 	struct st7703 *ctx = panel_to_st7703(panel);
 	int ret;
 
-	ret = jh057n_init_sequence(ctx);
+	ret = ctx->desc->init_sequence(ctx);
 	if (ret < 0) {
 		DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
 			      ret);
@@ -216,7 +226,7 @@ static int st7703_prepare(struct drm_panel *panel)
 	return ret;
 }
 
-static const struct drm_display_mode default_mode = {
+static const struct drm_display_mode jh057n00900_mode = {
 	.hdisplay    = 720,
 	.hsync_start = 720 + 90,
 	.hsync_end   = 720 + 90 + 20,
@@ -232,17 +242,26 @@ static const struct drm_display_mode default_mode = {
 	.height_mm   = 130,
 };
 
+struct st7703_panel_desc jh057n00900_panel_desc = {
+	.mode = &jh057n00900_mode,
+	.lanes = 4,
+	.mode_flags = MIPI_DSI_MODE_VIDEO |
+		MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
+	.format = MIPI_DSI_FMT_RGB888,
+	.init_sequence = jh057n_init_sequence,
+};
+
 static int st7703_get_modes(struct drm_panel *panel,
 			    struct drm_connector *connector)
 {
 	struct st7703 *ctx = panel_to_st7703(panel);
 	struct drm_display_mode *mode;
 
-	mode = drm_mode_duplicate(connector->dev, &default_mode);
+	mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
 	if (!mode) {
 		DRM_DEV_ERROR(ctx->dev, "Failed to add mode %ux%u@%u\n",
-			      default_mode.hdisplay, default_mode.vdisplay,
-			      default_mode.vrefresh);
+			      ctx->desc->mode->hdisplay, ctx->desc->mode->vdisplay,
+			      ctx->desc->mode->vrefresh);
 		return -ENOMEM;
 	}
 
@@ -317,11 +336,11 @@ static int st7703_probe(struct mipi_dsi_device *dsi)
 	mipi_dsi_set_drvdata(dsi, ctx);
 
 	ctx->dev = dev;
+	ctx->desc = of_device_get_match_data(dev);
 
-	dsi->lanes = 4;
-	dsi->format = MIPI_DSI_FMT_RGB888;
-	dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
-		MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
+	dsi->mode_flags = ctx->desc->mode_flags;
+	dsi->format = ctx->desc->format;
+	dsi->lanes = ctx->desc->lanes;
 
 	ctx->vcc = devm_regulator_get(dev, "vcc");
 	if (IS_ERR(ctx->vcc)) {
@@ -361,8 +380,8 @@ static int st7703_probe(struct mipi_dsi_device *dsi)
 	}
 
 	DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",
-		     default_mode.hdisplay, default_mode.vdisplay,
-		     default_mode.vrefresh,
+		     ctx->desc->mode->hdisplay, ctx->desc->mode->vdisplay,
+		     ctx->desc->mode->vrefresh,
 		     mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
 
 	st7703_debugfs_init(ctx);
@@ -405,7 +424,7 @@ static int st7703_remove(struct mipi_dsi_device *dsi)
 }
 
 static const struct of_device_id st7703_of_match[] = {
-	{ .compatible = "rocktech,jh057n00900" },
+	{ .compatible = "rocktech,jh057n00900", .data = &jh057n00900_panel_desc },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, st7703_of_match);
-- 
2.27.0


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[PATCH v5 07/13] drm/panel: st7703: Move code specific to jh057n closer together

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:50 

It's better than having it spread around the driver.

Signed-off-by: Ondrej Jirman <redacted>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 50 +++++++++----------
 1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index 08cbc316266c..d03aab10cfef 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -153,6 +153,31 @@ static int jh057n_init_sequence(struct st7703 *ctx)
 	return 0;
 }
 
+static const struct drm_display_mode jh057n00900_mode = {
+	.hdisplay    = 720,
+	.hsync_start = 720 + 90,
+	.hsync_end   = 720 + 90 + 20,
+	.htotal	     = 720 + 90 + 20 + 20,
+	.vdisplay    = 1440,
+	.vsync_start = 1440 + 20,
+	.vsync_end   = 1440 + 20 + 4,
+	.vtotal	     = 1440 + 20 + 4 + 12,
+	.vrefresh    = 60,
+	.clock	     = 75276,
+	.flags	     = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+	.width_mm    = 65,
+	.height_mm   = 130,
+};
+
+struct st7703_panel_desc jh057n00900_panel_desc = {
+	.mode = &jh057n00900_mode,
+	.lanes = 4,
+	.mode_flags = MIPI_DSI_MODE_VIDEO |
+		MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
+	.format = MIPI_DSI_FMT_RGB888,
+	.init_sequence = jh057n_init_sequence,
+};
+
 static int st7703_enable(struct drm_panel *panel)
 {
 	struct st7703 *ctx = panel_to_st7703(panel);
@@ -226,31 +251,6 @@ static int st7703_prepare(struct drm_panel *panel)
 	return ret;
 }
 
-static const struct drm_display_mode jh057n00900_mode = {
-	.hdisplay    = 720,
-	.hsync_start = 720 + 90,
-	.hsync_end   = 720 + 90 + 20,
-	.htotal	     = 720 + 90 + 20 + 20,
-	.vdisplay    = 1440,
-	.vsync_start = 1440 + 20,
-	.vsync_end   = 1440 + 20 + 4,
-	.vtotal	     = 1440 + 20 + 4 + 12,
-	.vrefresh    = 60,
-	.clock	     = 75276,
-	.flags	     = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
-	.width_mm    = 65,
-	.height_mm   = 130,
-};
-
-struct st7703_panel_desc jh057n00900_panel_desc = {
-	.mode = &jh057n00900_mode,
-	.lanes = 4,
-	.mode_flags = MIPI_DSI_MODE_VIDEO |
-		MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
-	.format = MIPI_DSI_FMT_RGB888,
-	.init_sequence = jh057n_init_sequence,
-};
-
 static int st7703_get_modes(struct drm_panel *panel,
 			    struct drm_connector *connector)
 {
-- 
2.27.0


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[PATCH v5 05/13] drm/panel: st7703: Rename functions from jh057n prefix to st7703

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:56:54 

This is done so that code that's not specific to a particular
jh057n panel is named after the controller. Functions specific
to the panel are kept named after the panel.

Signed-off-by: Ondrej Jirman <redacted>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 90 ++++++++++---------
 1 file changed, 46 insertions(+), 44 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index 38ff742bc120..511af659f273 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Rockteck jh057n00900 5.5" MIPI-DSI panel driver
+ * Driver for panels based on Sitronix ST7703 controller, souch as:
+ *
+ * - Rocktech jh057n00900 5.5" MIPI-DSI panel
  *
  * Copyright (C) Purism SPC 2019
  */
@@ -21,7 +23,7 @@
 #include <drm/drm_panel.h>
 #include <drm/drm_print.h>
 
-#define DRV_NAME "panel-rocktech-jh057n00900"
+#define DRV_NAME "panel-sitronix-st7703"
 
 /* Manufacturer specific Commands send via DSI */
 #define ST7703_CMD_ALL_PIXEL_OFF 0x22
@@ -45,7 +47,7 @@
 #define ST7703_CMD_SETGIP1	 0xE9
 #define ST7703_CMD_SETGIP2	 0xEA
 
-struct jh057n {
+struct st7703 {
 	struct device *dev;
 	struct drm_panel panel;
 	struct gpio_desc *reset_gpio;
@@ -56,9 +58,9 @@ struct jh057n {
 	struct dentry *debugfs;
 };
 
-static inline struct jh057n *panel_to_jh057n(struct drm_panel *panel)
+static inline struct st7703 *panel_to_st7703(struct drm_panel *panel)
 {
-	return container_of(panel, struct jh057n, panel);
+	return container_of(panel, struct st7703, panel);
 }
 
 #define dsi_generic_write_seq(dsi, seq...) do {				\
@@ -69,7 +71,7 @@ static inline struct jh057n *panel_to_jh057n(struct drm_panel *panel)
 			return ret;					\
 	} while (0)
 
-static int jh057n_init_sequence(struct jh057n *ctx)
+static int jh057n_init_sequence(struct st7703 *ctx)
 {
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 	struct device *dev = ctx->dev;
@@ -141,9 +143,9 @@ static int jh057n_init_sequence(struct jh057n *ctx)
 	return 0;
 }
 
-static int jh057n_enable(struct drm_panel *panel)
+static int st7703_enable(struct drm_panel *panel)
 {
-	struct jh057n *ctx = panel_to_jh057n(panel);
+	struct st7703 *ctx = panel_to_st7703(panel);
 	int ret;
 
 	ret = jh057n_init_sequence(ctx);
@@ -156,17 +158,17 @@ static int jh057n_enable(struct drm_panel *panel)
 	return 0;
 }
 
-static int jh057n_disable(struct drm_panel *panel)
+static int st7703_disable(struct drm_panel *panel)
 {
-	struct jh057n *ctx = panel_to_jh057n(panel);
+	struct st7703 *ctx = panel_to_st7703(panel);
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 
 	return mipi_dsi_dcs_set_display_off(dsi);
 }
 
-static int jh057n_unprepare(struct drm_panel *panel)
+static int st7703_unprepare(struct drm_panel *panel)
 {
-	struct jh057n *ctx = panel_to_jh057n(panel);
+	struct st7703 *ctx = panel_to_st7703(panel);
 
 	if (!ctx->prepared)
 		return 0;
@@ -178,9 +180,9 @@ static int jh057n_unprepare(struct drm_panel *panel)
 	return 0;
 }
 
-static int jh057n_prepare(struct drm_panel *panel)
+static int st7703_prepare(struct drm_panel *panel)
 {
-	struct jh057n *ctx = panel_to_jh057n(panel);
+	struct st7703 *ctx = panel_to_st7703(panel);
 	int ret;
 
 	if (ctx->prepared)
@@ -230,10 +232,10 @@ static const struct drm_display_mode default_mode = {
 	.height_mm   = 130,
 };
 
-static int jh057n_get_modes(struct drm_panel *panel,
+static int st7703_get_modes(struct drm_panel *panel,
 			    struct drm_connector *connector)
 {
-	struct jh057n *ctx = panel_to_jh057n(panel);
+	struct st7703 *ctx = panel_to_st7703(panel);
 	struct drm_display_mode *mode;
 
 	mode = drm_mode_duplicate(connector->dev, &default_mode);
@@ -254,17 +256,17 @@ static int jh057n_get_modes(struct drm_panel *panel,
 	return 1;
 }
 
-static const struct drm_panel_funcs jh057n_drm_funcs = {
-	.disable   = jh057n_disable,
-	.unprepare = jh057n_unprepare,
-	.prepare   = jh057n_prepare,
-	.enable	   = jh057n_enable,
-	.get_modes = jh057n_get_modes,
+static const struct drm_panel_funcs st7703_drm_funcs = {
+	.disable   = st7703_disable,
+	.unprepare = st7703_unprepare,
+	.prepare   = st7703_prepare,
+	.enable	   = st7703_enable,
+	.get_modes = st7703_get_modes,
 };
 
 static int allpixelson_set(void *data, u64 val)
 {
-	struct jh057n *ctx = data;
+	struct st7703 *ctx = data;
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 
 	DRM_DEV_DEBUG_DRIVER(ctx->dev, "Setting all pixels on\n");
@@ -282,7 +284,7 @@ static int allpixelson_set(void *data, u64 val)
 DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL,
 			allpixelson_set, "%llu\n");
 
-static void jh057n_debugfs_init(struct jh057n *ctx)
+static void st7703_debugfs_init(struct st7703 *ctx)
 {
 	ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);
 
@@ -290,16 +292,16 @@ static void jh057n_debugfs_init(struct jh057n *ctx)
 			    &allpixelson_fops);
 }
 
-static void jh057n_debugfs_remove(struct jh057n *ctx)
+static void st7703_debugfs_remove(struct st7703 *ctx)
 {
 	debugfs_remove_recursive(ctx->debugfs);
 	ctx->debugfs = NULL;
 }
 
-static int jh057n_probe(struct mipi_dsi_device *dsi)
+static int st7703_probe(struct mipi_dsi_device *dsi)
 {
 	struct device *dev = &dsi->dev;
-	struct jh057n *ctx;
+	struct st7703 *ctx;
 	int ret;
 
 	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
@@ -340,7 +342,7 @@ static int jh057n_probe(struct mipi_dsi_device *dsi)
 		return ret;
 	}
 
-	drm_panel_init(&ctx->panel, dev, &jh057n_drm_funcs,
+	drm_panel_init(&ctx->panel, dev, &st7703_drm_funcs,
 		       DRM_MODE_CONNECTOR_DSI);
 
 	ret = drm_panel_of_backlight(&ctx->panel);
@@ -363,13 +365,13 @@ static int jh057n_probe(struct mipi_dsi_device *dsi)
 		     default_mode.vrefresh,
 		     mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);
 
-	jh057n_debugfs_init(ctx);
+	st7703_debugfs_init(ctx);
 	return 0;
 }
 
-static void jh057n_shutdown(struct mipi_dsi_device *dsi)
+static void st7703_shutdown(struct mipi_dsi_device *dsi)
 {
-	struct jh057n *ctx = mipi_dsi_get_drvdata(dsi);
+	struct st7703 *ctx = mipi_dsi_get_drvdata(dsi);
 	int ret;
 
 	ret = drm_panel_unprepare(&ctx->panel);
@@ -383,12 +385,12 @@ static void jh057n_shutdown(struct mipi_dsi_device *dsi)
 			      ret);
 }
 
-static int jh057n_remove(struct mipi_dsi_device *dsi)
+static int st7703_remove(struct mipi_dsi_device *dsi)
 {
-	struct jh057n *ctx = mipi_dsi_get_drvdata(dsi);
+	struct st7703 *ctx = mipi_dsi_get_drvdata(dsi);
 	int ret;
 
-	jh057n_shutdown(dsi);
+	st7703_shutdown(dsi);
 
 	ret = mipi_dsi_detach(dsi);
 	if (ret < 0)
@@ -397,28 +399,28 @@ static int jh057n_remove(struct mipi_dsi_device *dsi)
 
 	drm_panel_remove(&ctx->panel);
 
-	jh057n_debugfs_remove(ctx);
+	st7703_debugfs_remove(ctx);
 
 	return 0;
 }
 
-static const struct of_device_id jh057n_of_match[] = {
+static const struct of_device_id st7703_of_match[] = {
 	{ .compatible = "rocktech,jh057n00900" },
 	{ /* sentinel */ }
 };
-MODULE_DEVICE_TABLE(of, jh057n_of_match);
+MODULE_DEVICE_TABLE(of, st7703_of_match);
 
-static struct mipi_dsi_driver jh057n_driver = {
-	.probe	= jh057n_probe,
-	.remove = jh057n_remove,
-	.shutdown = jh057n_shutdown,
+static struct mipi_dsi_driver st7703_driver = {
+	.probe	= st7703_probe,
+	.remove = st7703_remove,
+	.shutdown = st7703_shutdown,
 	.driver = {
 		.name = DRV_NAME,
-		.of_match_table = jh057n_of_match,
+		.of_match_table = st7703_of_match,
 	},
 };
-module_mipi_dsi_driver(jh057n_driver);
+module_mipi_dsi_driver(st7703_driver);
 
 MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>");
-MODULE_DESCRIPTION("DRM driver for Rocktech JH057N00900 MIPI DSI panel");
+MODULE_DESCRIPTION("DRM driver for Sitronix ST7703 based MIPI DSI panels");
 MODULE_LICENSE("GPL v2");
-- 
2.27.0


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[PATCH v5 02/13] dt-bindings: panel: Convert rocktech,jh057n00900 to yaml

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:57:02 

Convert Rocktech MIPI DSI panel driver from txt to yaml bindings.

Signed-off-by: Ondrej Jirman <redacted>
---
 .../display/panel/rocktech,jh057n00900.txt    | 23 -------
 .../display/panel/rocktech,jh057n00900.yaml   | 66 +++++++++++++++++++
 2 files changed, 66 insertions(+), 23 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt
 create mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml

diff --git a/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt
deleted file mode 100644
index a372c5d84695..000000000000
--- a/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-Rocktech jh057n00900 5.5" 720x1440 TFT LCD panel
-
-Required properties:
-- compatible: should be "rocktech,jh057n00900"
-- reg: DSI virtual channel of the peripheral
-- reset-gpios: panel reset gpio
-- backlight: phandle of the backlight device attached to the panel
-- vcc-supply: phandle of the regulator that provides the vcc supply voltage.
-- iovcc-supply: phandle of the regulator that provides the iovcc supply
-  voltage.
-
-Example:
-
-	&mipi_dsi {
-		panel@0 {
-			compatible = "rocktech,jh057n00900";
-			reg = <0>;
-			backlight = <&backlight>;
-			reset-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>;
-			vcc-supply = <&reg_2v8_p>;
-			iovcc-supply = <&reg_1v8_p>;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
new file mode 100644
index 000000000000..f97c48550741
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/rocktech,jh057n00900.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rocktech JH057N00900 5.5" 720x1440 TFT LCD panel
+
+maintainers:
+  - Ondrej Jirman <megi@xff.cz>
+
+description: |
+             Rocktech JH057N00900 is a 720x1440 TFT LCD panel
+             connected using a MIPI-DSI video interface.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    const: rocktech,jh057n00900
+
+  reg:
+    maxItems: 1
+    description: DSI virtual channel
+
+  vcc-supply:
+    description: Panel power supply
+
+  vccio-supply:
+    description: I/O voltage supply
+
+  reset-gpios:
+    description: GPIO used for the reset pin
+    maxItems: 1
+
+  backlight:
+    description: Backlight used by the panel
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+required:
+  - compatible
+  - reg
+  - vcc-supply
+  - vccio-supply
+  - reset-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      panel@0 {
+	compatible = "rocktech,jh057n00900";
+	reg = <0>;
+	vcc-supply = <&reg_2v8_p>;
+	iovcc-supply = <&reg_1v8_p>;
+	reset-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>;
+	backlight = <&backlight>;
+      };
+    };
+...
-- 
2.27.0


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[PATCH v5 01/13] dt-bindings: vendor-prefixes: Add Xingbangda

From: Ondrej Jirman <hidden>
Date: 2020-06-26 00:57:04 

From: Icenowy Zheng <icenowy@aosc.io>

Shenzhen Xingbangda Display Technology Co., Ltd is a company which
produces LCD modules. It supplies the LCD panels for the PinePhone.

Add the vendor prefix of it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Ondrej Jirman <redacted>
Acked-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 9aeab66be85f..740b116b179f 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -1157,6 +1157,8 @@ patternProperties:
     description: Xiaomi Technology Co., Ltd.
   "^xillybus,.*":
     description: Xillybus Ltd.
+  "^xingbangda,.*":
+    description: Shenzhen Xingbangda Display Technology Co., Ltd
   "^xinpeng,.*":
     description: Shenzhen Xinpeng Technology Co., Ltd
   "^xlnx,.*":
-- 
2.27.0


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Re: [PATCH v5 02/13] dt-bindings: panel: Convert rocktech, jh057n00900 to yaml

From: Rob Herring <robh@kernel.org>
Date: 2020-06-29 22:03:12 

On Fri, 26 Jun 2020 02:55:50 +0200, Ondrej Jirman wrote:
Convert Rocktech MIPI DSI panel driver from txt to yaml bindings.

Signed-off-by: Ondrej Jirman <redacted>
---
 .../display/panel/rocktech,jh057n00900.txt    | 23 -------
 .../display/panel/rocktech,jh057n00900.yaml   | 66 +++++++++++++++++++
 2 files changed, 66 insertions(+), 23 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.txt
 create mode 100644 Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml

My bot found errors running 'make dt_binding_check' on your patch:

Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml:  while scanning a block scalar
  in "<unicode string>", line 51, column 5
found a tab character where an indentation space is expected
  in "<unicode string>", line 58, column 1
Documentation/devicetree/bindings/Makefile:20: recipe for target 'Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.example.dts' failed
make[1]: *** [Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.example.dts] Error 1
make[1]: *** Waiting for unfinished jobs....
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml: ignoring, error parsing file
warning: no schema found in file: ./Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml: ignoring, error parsing file
warning: no schema found in file: ./Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
Makefile:1347: recipe for target 'dt_binding_check' failed
make: *** [dt_binding_check] Error 2


See https://patchwork.ozlabs.org/patch/1317299

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.


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Re: [PATCH v5 04/13] drm/panel: rocktech-jh057n00900: Rename the driver to st7703

From: Linus Walleij <hidden>
Date: 2020-07-01 07:47:43 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

This rename is done so that the driver matches the name of the
display controller and in preparation for adding support for more
panels to the driver.

This is just a basic file rename, with no code changes.

Signed-off-by: Ondrej Jirman <redacted>
This is the right thing to do.
Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 05/13] drm/panel: st7703: Rename functions from jh057n prefix to st7703

From: Linus Walleij <hidden>
Date: 2020-07-01 07:48:17 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

This is done so that code that's not specific to a particular
jh057n panel is named after the controller. Functions specific
to the panel are kept named after the panel.

Signed-off-by: Ondrej Jirman <redacted>
Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 06/13] drm/panel: st7703: Prepare for supporting multiple panels

From: Linus Walleij <hidden>
Date: 2020-07-01 07:48:52 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

Parametrize the driver so that it can support more panels based
on st7703 controller.

Signed-off-by: Ondrej Jirman <redacted>
Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 07/13] drm/panel: st7703: Move code specific to jh057n closer together

From: Linus Walleij <hidden>
Date: 2020-07-01 07:49:27 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

It's better than having it spread around the driver.

Signed-off-by: Ondrej Jirman <redacted>
Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 08/13] drm/panel: st7703: Move generic part of init sequence to enable callback

From: Linus Walleij <hidden>
Date: 2020-07-01 07:50:22 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

Calling sleep out and display on is a controller specific part
of the initialization process. Move it out of the panel specific
initialization function to the enable callback.

Signed-off-by: Ondrej Jirman <redacted>
Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 09/13] drm/panel: st7703: Add support for Xingbangda XBD599

From: Linus Walleij <hidden>
Date: 2020-07-01 07:50:55 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI LCD panel used in
PinePhone. Add support for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Ondrej Jirman <redacted>
Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 10/13] drm/panel: st7703: Enter sleep after display off

From: Linus Walleij <hidden>
Date: 2020-07-01 07:51:26 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

The datasheet suggests to issue sleep in after display off
as a part of the panel's shutdown sequence.

Signed-off-by: Ondrej Jirman <redacted>
Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 11/13] drm/panel: st7703: Assert reset prior to powering down the regulators

From: Linus Walleij <hidden>
Date: 2020-07-01 07:51:55 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

The reset pin is inverted, so if we don't assert reset, the actual gpio
will be high and may keep driving the IO port of the panel.

Signed-off-by: Ondrej Jirman <redacted>
Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 12/13] arm64: dts: sun50i-a64-pinephone: Enable LCD support on PinePhone

From: Linus Walleij <hidden>
Date: 2020-07-01 07:52:36 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

From: Icenowy Zheng <icenowy@aosc.io>

PinePhone uses PWM backlight and a XBD599 LCD panel over DSI for
display.

Backlight levels curve was optimized by Martijn Braam using a
lux meter.

Add its device nodes.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Martijn Braam <redacted>
Signed-off-by: Ondrej Jirman <redacted>
Acked-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 13/13] arm64: dts: sun50i-a64-pinephone: Add touchscreen support

From: Linus Walleij <hidden>
Date: 2020-07-01 07:53:08 

On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:

Pinephone has a Goodix GT917S capacitive touchscreen controller on
I2C0 bus. Add support for it.

Signed-off-by: Ondrej Jirman <redacted>
Acked-by: Linus Walleij <redacted>

Yours,
Linus Walleij

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Re: [PATCH v5 09/13] drm/panel: st7703: Add support for Xingbangda XBD599

From: Ondřej Jirman <hidden>
Date: 2020-07-01 10:34:57 

Hello Linus,

On Wed, Jul 01, 2020 at 09:50:40AM +0200, Linus Walleij wrote:
On Fri, Jun 26, 2020 at 2:56 AM Ondrej Jirman [off-list ref] wrote:
quoted
Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI LCD panel used in
PinePhone. Add support for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Ondrej Jirman <redacted>
Reviewed-by: Linus Walleij <redacted>
Thank you very much for the review. :)

I've sent v6 which should fix the currently remaining issues with dt bindings
+ one timing issue I've found in this patch. I've kept your reviewed-by tag,
because it's a fairly trivial issue. But feel free to complain.

thank you again and regards,
	o.

Yours,
Linus Walleij
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