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drm/amd/display: Add periodic detection when zstate is enabled

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[Why]
When system is in Z10 HPD interrupts cannot fire, we may miss display
configuration changes.

[How]
When Zstate is enabled, if DMUB indicate DCN has lost power, do a
complete detection periodically.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Yang
2021-08-25 20:02:22 -04:00
committed by Alex Deucher
parent 6513104ba4
commit ac02dc3425
13 changed files with 44 additions and 6 deletions
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4
drivers/gpu/drm/amd/display/dc/dm_helpers.h
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@@ -160,6 +160,10 @@ void dm_set_dcn_clocks(
struct dc_context *ctx,
struct dc_clocks *clks);
#if defined(CONFIG_DRM_AMD_DC_DCN)
void dm_helpers_enable_periodic_detection(struct dc_context *ctx, bool enable);
#endif
void dm_set_phyd32clk(struct dc_context *ctx, int freq_khz);
bool dm_helpers_dmub_outbox_interrupt_control(struct dc_context *ctx, bool enable);