[PATCH v6] drm/panel: simple: Add TFC S9700RTWV43TR-01B 800x480 panel support

[Jyri Sarha]

Add support for Three Five displays TFC S9700RTWV43TR-01B 800x480
panel with resistive touch found on TI's AM335X-EVM.

Signed-off-by: Jyri Sarha <jsarha at ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
---
Changes since v5:
- Add all simple-panel properties that make sense with this panel to the
  binding document

Previous round some time ago:
https://patchwork.kernel.org/patch/10366741/

 .../display/panel/tfc,s9700rtwv43tr-01b.txt   | 17 +++++++++++
 .../devicetree/bindings/vendor-prefixes.txt   |  1 +
 drivers/gpu/drm/panel/panel-simple.c          | 28 +++++++++++++++++++
 3 files changed, 46 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/tfc,s9700rtwv43tr-01b.txt

diff --git a/Documentation/devicetree/bindings/display/panel/tfc,s9700rtwv43tr-01b.txt b/Documentation/devicetree/bindings/display/panel/tfc,s9700rtwv43tr-01b.txt
new file mode 100644
index 000000000000..fbd45b01e5c5
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/tfc,s9700rtwv43tr-01b.txt
@@ -0,0 +1,17 @@
+TFC S9700RTWV43TR-01B 7" Three Five Corp 800x480 LCD panel with
+resistive touch
+
+The panel is found on TI AM335x-evm.
+
+Required properties:
+- compatible: should be "tfc,S9700RTWV43tr-01b"
+
+Optional properties:
+- power-supply: If there is one that can be controlled by the driver.
+   If the property is not present a dummy regulator is provided by the
+   framework.
+- enable-gpios: GPIO pin to enable or disable the panel, if there is one
+- backlight: phandle of the backlight device attached to the panel
+
+This binding is compatible with the simple-panel binding, which is specified
+in simple-panel.txt in this directory.
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 389508584f48..0c0ffe2cc823 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -391,6 +391,7 @@ technexion	TechNexion
 technologic	Technologic Systems
 tempo	Tempo Semiconductor
 terasic	Terasic Inc.
+tfc	Three Five Corp
 thine	THine Electronics, Inc.
 ti	Texas Instruments
 tianma	Tianma Micro-electronics Co., Ltd.
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 9c69e739a524..cfa57ee78482 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2281,6 +2281,31 @@ static const struct panel_desc starry_kr122ea0sra = {
 	},
 };
 
+static const struct drm_display_mode tfc_s9700rtwv43tr_01b_mode = {
+	.clock = 30000,
+	.hdisplay = 800,
+	.hsync_start = 800 + 39,
+	.hsync_end = 800 + 39 + 47,
+	.htotal = 800 + 39 + 47 + 39,
+	.vdisplay = 480,
+	.vsync_start = 480 + 13,
+	.vsync_end = 480 + 13 + 2,
+	.vtotal = 480 + 13 + 2 + 29,
+	.vrefresh = 62,
+};
+
+static const struct panel_desc tfc_s9700rtwv43tr_01b = {
+	.modes = &tfc_s9700rtwv43tr_01b_mode,
+	.num_modes = 1,
+	.bpc = 8,
+	.size = {
+		.width = 155,
+		.height = 90,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_POSEDGE,
+};
+
 static const struct display_timing tianma_tm070jdhg30_timing = {
 	.pixelclock = { 62600000, 68200000, 78100000 },
 	.hactive = { 1280, 1280, 1280 },
@@ -2718,6 +2743,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "starry,kr122ea0sra",
 		.data = &starry_kr122ea0sra,
+	}, {
+		.compatible = "tfc,s9700rtwv43tr-01b",
+		.data = &tfc_s9700rtwv43tr_01b,
 	}, {
 		.compatible = "tianma,tm070jdhg30",
 		.data = &tianma_tm070jdhg30,
-- 
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