[PATCH 4/7] drm/vc4: dpi: Support RGB565 format

[Maxime Ripard]

From: Chris Morgan <macromorgan at hotmail.com>

The RGB565 format with padding over 24 bits
(MEDIA_BUS_FMT_RGB565_1X24_CPADHI) is supported by the vc4 DPI
controller as "mode 3".  This is what the Geekworm MZP280 DPI display
uses, so let's add support for it in the DPI controller driver.

Reviewed-by: Dave Stevenson <dave.stevenson at raspberrypi.com>
Signed-off-by: Chris Morgan <macromorgan at hotmail.com>
Signed-off-by: Maxime Ripard <maxime at cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_dpi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
index 1f8f44b7b5a5..7da3dd1db50e 100644
--- a/drivers/gpu/drm/vc4/vc4_dpi.c
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -182,6 +182,10 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
 				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
 						       DPI_FORMAT);
 				break;
+			case MEDIA_BUS_FMT_RGB565_1X24_CPADHI:
+				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_2,
+						       DPI_FORMAT);
+				break;
 			default:
 				DRM_ERROR("Unknown media bus format %d\n",
 					  bus_format);

-- 
b4 0.11.0-dev-7da52