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authorDave Stevenson <dave.stevenson@raspberrypi.com>2022-12-07 12:53:23 +0100
committerMaxime Ripard <maxime@cerno.tech>2023-01-09 15:21:31 +0100
commit6c37c9c65d2c792ddee3e33e595a498592bf9735 (patch)
tree2abeabc77f347b9f413bee2f762ed5a166283e32
parentdrm/vc4: plane: Add 3:3:2 and 4:4:4:4 RGB/RGBX/RGBA formats (diff)
downloadlinux-6c37c9c65d2c792ddee3e33e595a498592bf9735.tar.xz
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drm/vc4: Add comments for which HVS_PIXEL_ORDER_xxx defines apply
The HVS_PIXEL_ORDER_xxx defines apply to specific HVS_PIXEL_FORMAT_xxx modes, so add comments to make this obvious. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-hvs-crtc-misc-v1-12-1f8e0770798b@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech>
-rw-r--r--drivers/gpu/drm/vc4/vc4_regs.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h
index 1256f0877ff6..f3763bd600f6 100644
--- a/drivers/gpu/drm/vc4/vc4_regs.h
+++ b/drivers/gpu/drm/vc4/vc4_regs.h
@@ -848,16 +848,19 @@ enum hvs_pixel_format {
/* Note: the LSB is the rightmost character shown. Only valid for
* HVS_PIXEL_FORMAT_RGB8888, not RGB888.
*/
+/* For modes 332, 4444, 555, 5551, 6666, 8888, 10:10:10:2 */
#define HVS_PIXEL_ORDER_RGBA 0
#define HVS_PIXEL_ORDER_BGRA 1
#define HVS_PIXEL_ORDER_ARGB 2
#define HVS_PIXEL_ORDER_ABGR 3
+/* For modes 666 and 888 (4 & 5) */
#define HVS_PIXEL_ORDER_XBRG 0
#define HVS_PIXEL_ORDER_XRBG 1
#define HVS_PIXEL_ORDER_XRGB 2
#define HVS_PIXEL_ORDER_XBGR 3
+/* For YCbCr modes (8-12, and 17) */
#define HVS_PIXEL_ORDER_XYCBCR 0
#define HVS_PIXEL_ORDER_XYCRCB 1
#define HVS_PIXEL_ORDER_YXCBCR 2