diff options
| author | Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com> | 2018-07-17 18:53:54 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-07-27 17:07:42 +0300 |
| commit | f358b39d187500717b4bc8633cef45d87eff0a3e (patch) | |
| tree | d4b5e7ea455eafaf86d6c4c6e96b8e988bdbff9f /drivers/gpu/drm/amd/display | |
| parent | 65c78961b30005447a0d9b285de93354d8308f34 (diff) | |
| download | linux-f358b39d187500717b4bc8633cef45d87eff0a3e.tar.xz | |
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')
3 files changed, 16 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index 33a14e163f88..1149c413f6d2 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -2552,7 +2552,7 @@ static void pplib_apply_display_requirements( dc->prev_display_config = *pp_display_cfg; } -static void dce110_set_bandwidth( +void dce110_set_bandwidth( struct dc *dc, struct dc_state *context, bool decrease_allowed) diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h index d6db3dbd9015..e4c5db75c4c6 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h @@ -68,6 +68,11 @@ void dce110_fill_display_configs( const struct dc_state *context, struct dm_pp_display_configuration *pp_display_cfg); +void dce110_set_bandwidth( + struct dc *dc, + struct dc_state *context, + bool decrease_allowed); + uint32_t dce110_get_min_vblank_time_us(const struct dc_state *context); void dp_receiver_power_ctrl(struct dc_link *link, bool on); 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; } |