From: hersen wu <hersenxs.wu@xxxxxxx>
Signed-off-by: hersen wu <hersenxs.wu@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
.../gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c
index c3c218805eb1..130b01801a26 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_stream_encoder.c
@@ -286,6 +286,14 @@ static void enc2_dp_set_dsc_config(struct stream_encoder *enc,
uint8_t *dsc_packed_pps)
{
struct dcn10_stream_encoder *enc1 = DCN10STRENC_FROM_STRENC(enc);
+ uint32_t dsc_value = 0;
+
+ dsc_value = REG_READ(DP_DSC_CNTL);
+
+ /* dsc disable skip */
+ if ((dsc_value & 0x3) == 0x0)
+ return;
+
REG_UPDATE_2(DP_DSC_CNTL,
DP_DSC_MODE, dsc_mode,
--
2.20.1
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