The driver ignores the alpha component on output video nodes and
hardcodes the alpha component to 0 on capture video nodes. Make this
explicit by exposing XRGB formats.
Compatibility with existing userspace applications is handled by
selecting the XRGB format corresponding to the requested old RGB format.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/vsp1/vsp1_video.c | 26 ++++++++++++++++++++++----
1 file changed, 22 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c
index b5bce10..415989c 100644
--- a/drivers/media/platform/vsp1/vsp1_video.c
+++ b/drivers/media/platform/vsp1/vsp1_video.c
@@ -51,11 +51,11 @@ static const struct vsp1_format_info vsp1_video_formats[] = {
VI6_FMT_RGB_332, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
1, { 8, 0, 0 }, false, false, 1, 1 },
- { V4L2_PIX_FMT_RGB444, V4L2_MBUS_FMT_ARGB8888_1X32,
+ { V4L2_PIX_FMT_XRGB444, V4L2_MBUS_FMT_ARGB8888_1X32,
VI6_FMT_XRGB_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
VI6_RPF_DSWAP_P_WDS,
1, { 16, 0, 0 }, false, false, 1, 1 },
- { V4L2_PIX_FMT_RGB555, V4L2_MBUS_FMT_ARGB8888_1X32,
+ { V4L2_PIX_FMT_XRGB555, V4L2_MBUS_FMT_ARGB8888_1X32,
VI6_FMT_XRGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
VI6_RPF_DSWAP_P_WDS,
1, { 16, 0, 0 }, false, false, 1, 1 },
@@ -71,10 +71,10 @@ static const struct vsp1_format_info vsp1_video_formats[] = {
VI6_FMT_RGB_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
1, { 24, 0, 0 }, false, false, 1, 1 },
- { V4L2_PIX_FMT_BGR32, V4L2_MBUS_FMT_ARGB8888_1X32,
+ { V4L2_PIX_FMT_XBGR32, V4L2_MBUS_FMT_ARGB8888_1X32,
VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,
1, { 32, 0, 0 }, false, false, 1, 1 },
- { V4L2_PIX_FMT_RGB32, V4L2_MBUS_FMT_ARGB8888_1X32,
+ { V4L2_PIX_FMT_XRGB32, V4L2_MBUS_FMT_ARGB8888_1X32,
VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,
1, { 32, 0, 0 }, false, false, 1, 1 },
@@ -181,11 +181,29 @@ static int __vsp1_video_try_format(struct vsp1_video *video,
struct v4l2_pix_format_mplane *pix,
const struct vsp1_format_info **fmtinfo)
{
+ static const u32 xrgb_formats[][2] = {
+ { V4L2_PIX_FMT_RGB444, V4L2_PIX_FMT_XRGB444 },
+ { V4L2_PIX_FMT_RGB555, V4L2_PIX_FMT_XRGB555 },
+ { V4L2_PIX_FMT_BGR32, V4L2_PIX_FMT_XBGR32 },
+ { V4L2_PIX_FMT_RGB32, V4L2_PIX_FMT_XRGB32 },
+ };
+
const struct vsp1_format_info *info;
unsigned int width = pix->width;
unsigned int height = pix->height;
unsigned int i;
+ /* Backward compatibility: replace deprecated RGB formats by their XRGB
+ * equivalent. This selects the format older userspace applications want
+ * while still exposing the new format.
+ */
+ for (i = 0; i < ARRAY_SIZE(xrgb_formats); ++i) {
+ if (xrgb_formats[i][0] == pix->pixelformat) {
+ pix->pixelformat = xrgb_formats[i][1];
+ break;
+ }
+ }
+
/* Retrieve format information and select the default format if the
* requested format isn't supported.
*/
--
1.8.5.5
--
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