@@ -200,6 +200,11 @@ static void rga_cmd_set_trans_info(struct rga_ctx *ctx)
dst_info.data.format = ctx->out.fmt->hw_format;
dst_info.data.swap = ctx->out.fmt->color_swap;
+ /*
+ * CSC mode must only be set when the colorspace families differ between
+ * input and output. It must remain unset (zeroed) if both are the same.
+ */
+
if (RGA_COLOR_FMT_IS_YUV(ctx->in.fmt->hw_format) &&
RGA_COLOR_FMT_IS_RGB(ctx->out.fmt->hw_format)) {
switch (ctx->in.colorspace) {
@@ -212,7 +217,8 @@ static void rga_cmd_set_trans_info(struct rga_ctx *ctx)
}
}
- if (RGA_COLOR_FMT_IS_YUV(ctx->out.fmt->hw_format)) {
+ if (RGA_COLOR_FMT_IS_RGB(ctx->in.fmt->hw_format) &&
+ RGA_COLOR_FMT_IS_YUV(ctx->out.fmt->hw_format)) {
switch (ctx->out.colorspace) {
case V4L2_COLORSPACE_REC709:
dst_info.data.csc_mode = RGA_SRC_CSC_MODE_BT709_R0;
Setting the output CSC mode is required for a YUV output, but must not be set when the input is also YUV. Doing this (as tested with a YUV420P to YUV420P conversion) results in wrong colors. Adapt the logic to only set the output CSC mode when the output is YUV and the input is RGB. Also add a comment to clarify the rationale. Fixes: f7e7b48e6d79 ("[media] rockchip/rga: v4l2 m2m support") Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> --- drivers/media/platform/rockchip/rga/rga-hw.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)