[PATCH v2 2/2] drm/panel: Add support for E Ink VB3300-KCA

Alistair Francis
2021-06-15T10:33:48Z

Add support for the 10.3" E Ink panel described at:
https://www.eink.com/product.html?type=productdetail&id=7

Signed-off-by: Alistair Francis <alistair@alistair23.me>
---
v2:
- Fix build warning
- Document new string

.../bindings/display/panel/panel-simple.yaml | 2 ++
drivers/gpu/drm/panel/panel-simple.c | 29 +++++++++++++++++++
2 files changed, 31 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
index b3797ba2698b..799e20222551 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml
@@ -128,6 +128,8 @@ properties:
# Emerging Display Technology Corp. WVGA TFT Display with capacitive touch
- edt,etm0700g0dh6
- edt,etm0700g0edh6
+ # E Ink VB3300-KCA
+ - eink,vb3300-kca
# Evervision Electronics Co. Ltd. VGG804821 5.0" WVGA TFT LCD Panel
- evervision,vgg804821
# Foxlink Group 5" WVGA TFT LCD panel
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index be312b5c04dd..600e054ec521 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2004,6 +2004,32 @@ static const struct panel_desc edt_etm0700g0bdh6 = {
.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
};

+static const struct display_timing eink_vb3300_kca_timing = {
+ .pixelclock = { 40000000, 40000000, 40000000 },
+ .hactive = { 334, 334, 334 },
+ .hfront_porch = { 1, 1, 1 },
+ .hback_porch = { 1, 1, 1 },
+ .hsync_len = { 1, 1, 1 },
+ .vactive = { 1405, 1405, 1405 },
+ .vfront_porch = { 1, 1, 1 },
+ .vback_porch = { 1, 1, 1 },
+ .vsync_len = { 1, 1, 1 },
+ .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+ DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+};
+
+static const struct panel_desc eink_vb3300_kca = {
+ .timings = &eink_vb3300_kca_timing,
+ .num_timings = 1,
+ .bpc = 6,
+ .size = {
+ .width = 157,
+ .height = 209,
+ },
+ .bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+ .bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE,
+};
+
static const struct display_timing evervision_vgg804821_timing = {
.pixelclock = { 27600000, 33300000, 50000000 },
.hactive = { 800, 800, 800 },
@@ -4302,6 +4328,9 @@ static const struct of_device_id platform_of_match[] = {
}, {
.compatible = "edt,etm0700g0dh6",
.data = &edt_etm0700g0dh6,
+ }, {
+ .compatible = "eink,vb3300-kca",
+ .data = &eink_vb3300_kca,
}, {
.compatible = "edt,etm0700g0bdh6",
.data = &edt_etm0700g0bdh6,
--
2.31.1