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| author | Jerry (Fangzhi) Zuo | 2018-07-17 17:53:54 +0200 |
|---|---|---|
| committer | Alex Deucher | 2018-07-27 16:07:42 +0200 |
| commit | f358b39d187500717b4bc8633cef45d87eff0a3e (patch) | |
| tree | d4b5e7ea455eafaf86d6c4c6e96b8e988bdbff9f /drivers/gpu/drm/amd/display/dc/dce120 | |
| parent | drm/amd/display: flatten aux_engine and engine (diff) | |
| download | kernel-qcow2-linux-f358b39d187500717b4bc8633cef45d87eff0a3e.tar.gz kernel-qcow2-linux-f358b39d187500717b4bc8633cef45d87eff0a3e.tar.xz kernel-qcow2-linux-f358b39d187500717b4bc8633cef45d87eff0a3e.zip | |
drm/amd/display: Fix Vega10 black screen after mode change
[Why]
The sequence is slightly changed when bring .set_bandwidth out
from the end of programming backend to the end of programming
surface. Vega10 doesn't like to get clocks updated if
stream_count is zero in the current context (Atomic Reset).
[How]
Do not update clocks if no stream is showing up in the context.
Fixes 1b2b130192 "dc: Remove 300Mhz minimum disp clk limit."
Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce120')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c index e96ff86d2fc3..5853522a6182 100644 --- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_hw_sequencer.c @@ -244,7 +244,16 @@ static void dce120_update_dchub( dh_data->dchub_info_valid = false; } +static void dce120_set_bandwidth( + struct dc *dc, + struct dc_state *context, + bool decrease_allowed) +{ + if (context->stream_count <= 0) + return; + dce110_set_bandwidth(dc, context, decrease_allowed); +} void dce120_hw_sequencer_construct(struct dc *dc) { @@ -254,5 +263,6 @@ void dce120_hw_sequencer_construct(struct dc *dc) dce110_hw_sequencer_construct(dc); dc->hwss.enable_display_power_gating = dce120_enable_display_power_gating; dc->hwss.update_dchub = dce120_update_dchub; + dc->hwss.set_bandwidth = dce120_set_bandwidth; } |