From b02ecdf1fb2bf67e1139747359814af0fa499fa5 Mon Sep 17 00:00:00 2001 From: Chris Morgan Date: Fri, 28 Jan 2022 17:39:54 -0600 Subject: [PATCH 024/726] drm/vc4: dpi: Support DPI interface in mode3 for RGB565 Add support for the VC4 DPI driver to utilize DPI mode 3. This is defined here as xxxRRRRRxxGGGGGGxxxBBBBB: https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#parallel-display-interface-dpi This mode is required to use the Geekworm MZP280 DPI display. Signed-off-by: Chris Morgan Reviewed-by: Dave Stevenson --- 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 96b5d34f6bd7..a7bebfa5d5b0 100644 --- a/drivers/gpu/drm/vc4/vc4_dpi.c +++ b/drivers/gpu/drm/vc4/vc4_dpi.c @@ -188,6 +188,10 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder) dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_1, 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); -- 2.33.1