From: Lewis Huang <Lewis.Huang@xxxxxxx>
[Why]
When the vbios config and driver config are different, if we update
clock to lower before call program_timing and program_pixel_clk, garbage
appear.
[How]
Align bw context with hw config when system resume
Reviewed-by: Anthony Koo <Anthony.Koo@xxxxxxx>
Acked-by: Agustin Gutierrez <agustin.gutierrez@xxxxxxx>
Signed-off-by: Lewis Huang <Lewis.Huang@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 44d27579d898..a25732d07222 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -1378,6 +1378,12 @@ void dcn10_init_hw(struct dc *dc)
if (dc->clk_mgr && dc->clk_mgr->funcs->init_clocks)
dc->clk_mgr->funcs->init_clocks(dc->clk_mgr);
+ /* Align bw context with hw config when system resume. */
+ if (dc->clk_mgr->clks.dispclk_khz != 0 && dc->clk_mgr->clks.dppclk_khz != 0) {
+ dc->current_state->bw_ctx.bw.dcn.clk.dispclk_khz = dc->clk_mgr->clks.dispclk_khz;
+ dc->current_state->bw_ctx.bw.dcn.clk.dppclk_khz = dc->clk_mgr->clks.dppclk_khz;
+ }
+
// Initialize the dccg
if (dc->res_pool->dccg && dc->res_pool->dccg->funcs->dccg_init)
dc->res_pool->dccg->funcs->dccg_init(res_pool->dccg);
--
2.25.1
