diff options
| author | Jing Zhou <Jing.Zhou@amd.com> | 2020-11-16 11:11:08 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-12-09 05:03:52 +0100 |
| commit | 5c8a6c71d72021c0d62d8904997495c93b962eec (patch) | |
| tree | dbbc93f722545f9ee12e2e207ee3334ec20b3e44 /drivers/gpu | |
| parent | drm/amd/display: Add support for runtime feature detection command (diff) | |
| download | linux-5c8a6c71d72021c0d62d8904997495c93b962eec.tar.xz linux-5c8a6c71d72021c0d62d8904997495c93b962eec.zip | |
drm/amd/display: Set default bits per channel
[Why]
Bump into calcReducedBlankingTiming because of mode query failed.
In this function,
timing.displayColorDepth == DISPLAY_COLOR_DEPTH_UNDEFINED.
Then req_bw == 0 because of bits_per_channel == 0.
So decide edp link settings, use default RBRx1 for special timing.
[How]
Set default bits_per_channel is 8.
Signed-off-by: Jing Zhou <Jing.Zhou@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 15 |
2 files changed, 14 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index a9c52657eb4b..bd004de107b7 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -3471,11 +3471,11 @@ uint32_t dc_bandwidth_in_kbps_from_timing( bits_per_channel = 16; break; default: + ASSERT(bits_per_channel != 0); + bits_per_channel = 8; break; } - ASSERT(bits_per_channel != 0); - kbps = timing->pix_clk_100hz / 10; kbps *= bits_per_channel; diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 93fbc646f53b..dbbc0ec0b699 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -1410,15 +1410,24 @@ static void print_status_message( case LINK_RATE_LOW: link_rate = "RBR"; break; + case LINK_RATE_RATE_2: + link_rate = "R2"; + break; + case LINK_RATE_RATE_3: + link_rate = "R3"; + break; case LINK_RATE_HIGH: link_rate = "HBR"; break; - case LINK_RATE_HIGH2: - link_rate = "HBR2"; - break; case LINK_RATE_RBR2: link_rate = "RBR2"; break; + case LINK_RATE_RATE_6: + link_rate = "R6"; + break; + case LINK_RATE_HIGH2: + link_rate = "HBR2"; + break; case LINK_RATE_HIGH3: link_rate = "HBR3"; break; |