From: Eric Bernstein <eric.bernst...@amd.com>
Update MSA MISC1 bit 6 programming to handle YCbCr 4:2:0
and BT2020 cases.
Signed-off-by: Eric Bernstein <eric.bernst...@amd.com>
Reviewed-by: Hersen Wu <hersenxs...@amd.com>
Acked-by: Harry Wentland <harry.wentl...@amd.com>
---
.../amd/display/dc/dcn10/dcn10_stream_encoder.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
index c928ee4cd382..147f61416fa5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c
@@ -298,9 +298,20 @@ void enc1_stream_encoder_dp_set_stream_attribute(
}
misc1 = REG_READ(DP_MSA_MISC);
+ /* For YCbCr420 and BT2020 Colorimetry Formats, VSC SDP shall be used.
+ * When MISC1, bit 6, is Set to 1, a Source device uses a VSC SDP to
indicate the
+ * Pixel Encoding/Colorimetry Format and that a Sink device shall
ignore MISC1, bit 7,
+ * and MISC0, bits 7:1 (MISC1, bit 7, and MISC0, bits 7:1, become
“don’t care”).
+ */
+ if ((crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420) ||
+ (output_color_space == COLOR_SPACE_2020_YCBCR) ||
+ (output_color_space == COLOR_SPACE_2020_RGB_FULLRANGE)
||
+ (output_color_space ==
COLOR_SPACE_2020_RGB_LIMITEDRANGE))
+ misc1 = misc1 | 0x40;
+ else
+ misc1 = misc1 & ~0x40;
/* set color depth */
-
switch (crtc_timing->display_color_depth) {
case COLOR_DEPTH_666:
REG_UPDATE(DP_PIXEL_FORMAT, DP_COMPONENT_DEPTH,
@@ -354,7 +365,6 @@ void enc1_stream_encoder_dp_set_stream_attribute(
switch (output_color_space) {
case COLOR_SPACE_SRGB:
- misc0 = misc0 | 0x0;
misc1 = misc1 & ~0x80; /* bit7 = 0*/
dynamic_range_rgb = 0; /*full range*/
break;
--
2.17.0
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