drm/panel: simple: Add the 7" DPI panel from Adafruit

This is a basic TFT panel with a 40-pin FPC connector on it.  The
specification doesn't define timings, but the Adafruit instructions
were setting up 800x480 CVT.

v2: Add .bus_format and vsync/hsync flags.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Rob Herring <robh@kernel.org>
[treding@nvidia.com: keep entries properly sorted]
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/Documentation/devicetree/bindings/display/panel/ontat,yx700wv03.txt b/Documentation/devicetree/bindings/display/panel/ontat,yx700wv03.txt
new file mode 100644 (file)
index 0000000..3d8a5e0
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/ontat,yx700wv03.txt
@@ -0,0 +1,7 @@
+On Tat Industrial Company 7" DPI TFT panel.
+
+Required properties:
+- compatible: should be "ontat,yx700wv03"
+
+This binding is compatible with the simple-panel binding, which is specified
+in simple-panel.txt in this directory.

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index b19c88f188b08d6d9b5a80089587d6767b00c96f..5aa07340a980d4ec67ebbb6e7d050df0e0773a37 100644 (file)
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1087,6 +1087,40 @@ static const struct panel_desc okaya_rs800480t_7x0gp = {
        .bus_format = MEDIA_BUS_FMT_RGB666_1X18,
 };
 
+/*
+ * 800x480 CVT. The panel appears to be quite accepting, at least as far as
+ * pixel clocks, but this is the timing that was being used in the Adafruit
+ * installation instructions.
+ */
+static const struct drm_display_mode ontat_yx700wv03_mode = {
+       .clock = 29500,
+       .hdisplay = 800,
+       .hsync_start = 824,
+       .hsync_end = 896,
+       .htotal = 992,
+       .vdisplay = 480,
+       .vsync_start = 483,
+       .vsync_end = 493,
+       .vtotal = 500,
+       .vrefresh = 60,
+       .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+};
+
+/*
+ * Specification at:
+ * https://www.adafruit.com/images/product-files/2406/c3163.pdf
+ */
+static const struct panel_desc ontat_yx700wv03 = {
+       .modes = &ontat_yx700wv03_mode,
+       .num_modes = 1,
+       .bpc = 8,
+       .size = {
+               .width = 154,
+               .height = 83,
+       },
+       .bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+};
+
 static const struct drm_display_mode ortustech_com43h4m85ulc_mode  = {
        .clock = 25000,
        .hdisplay = 480,
@@ -1331,6 +1365,9 @@ static const struct of_device_id platform_of_match[] = {
        }, {
                .compatible = "okaya,rs800480t-7x0gp",
                .data = &okaya_rs800480t_7x0gp,
+       }, {
+               .compatible = "ontat,yx700wv03",
+               .data = &ontat_yx700wv03,
        }, {
                .compatible = "ortustech,com43h4m85ulc",
                .data = &ortustech_com43h4m85ulc,