6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wesley Chalmers <Wesley.Chalmers@xxxxxxx>
[ Upstream commit e101bf95ea87ccc03ac2f48dfc0757c6364ff3c7 ]
[WHY]
Writing to DRR registers such as OTG_V_TOTAL_MIN on the same frame as a
pipe commit can cause underflow.
[HOW]
Move DMUB p-state delegate into optimze_bandwidth; enabling FAMS sets
optimized_required.
This change expects that Freesync requests are blocked when
optimized_required is true.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 6 ++++++
drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c | 7 +++++++
2 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 4ef632864948e..21fae818ca28f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -2032,6 +2032,12 @@ void dcn20_optimize_bandwidth(
if (hubbub->funcs->program_compbuf_size)
hubbub->funcs->program_compbuf_size(hubbub, context->bw_ctx.bw.dcn.compbuf_size_kb, true);
+ if (context->bw_ctx.bw.dcn.clk.fw_based_mclk_switching) {
+ dc_dmub_srv_p_state_delegate(dc,
+ true, context);
+ context->bw_ctx.bw.dcn.clk.p_state_change_support = true;
+ }
+
dc->clk_mgr->funcs->update_clocks(
dc->clk_mgr,
context,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
index a1b312483d7f1..c97d3e81a83d2 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
@@ -987,11 +987,18 @@ void dcn30_set_disp_pattern_generator(const struct dc *dc,
void dcn30_prepare_bandwidth(struct dc *dc,
struct dc_state *context)
{
+ if (context->bw_ctx.bw.dcn.clk.fw_based_mclk_switching) {
+ dc->optimized_required = true;
+ context->bw_ctx.bw.dcn.clk.p_state_change_support = false;
+ }
+
if (dc->clk_mgr->dc_mode_softmax_enabled)
if (dc->clk_mgr->clks.dramclk_khz <= dc->clk_mgr->bw_params->dc_mode_softmax_memclk * 1000 &&
context->bw_ctx.bw.dcn.clk.dramclk_khz > dc->clk_mgr->bw_params->dc_mode_softmax_memclk * 1000)
dc->clk_mgr->funcs->set_max_memclk(dc->clk_mgr, dc->clk_mgr->bw_params->clk_table.entries[dc->clk_mgr->bw_params->clk_table.num_entries - 1].memclk_mhz);
dcn20_prepare_bandwidth(dc, context);
+
+ dc_dmub_srv_p_state_delegate(dc, false, context);
}
--
2.40.1
