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drm/amd/display: single PSR display not allow CSTATE sw w/a 

Description:
HW issue when all the pipes are off, DCE_allow_cstate is 0.
New sequence : blank OTG only instead of previous OTG_master_en=0)

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Charlene Liu 2017-07-24 21:41:28 -04:00 committed by Alex Deucher
parent 7a6c4af6bf
commit ee356d8f4f
2 changed files with 8 additions and 1 deletions
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6
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@ -1548,6 +1548,12 @@ bool dc_link_setup_psr(struct dc_link *link,
psr_context->psr_level.u32all = 0;
#if defined(CONFIG_DRM_AMD_DC_DCN1_0)
/*skip power down the single pipe since it blocks the cstate*/
if (ASIC_REV_IS_RAVEN(link->ctx->asic_id.hw_internal_rev))
psr_context->psr_level.bits.SKIP_SINGLE_OTG_DISABLE = true;
#endif
/* SMU will perform additional powerdown sequence.
* For unsupported ASICs, set psr_level flag to skip PSR
* static screen notification to SMU.

3
drivers/gpu/drm/amd/display/dc/dc_types.h
View File

@ -539,7 +539,8 @@ union dmcu_psr_level {
unsigned int SKIP_SMU_NOTIFICATION:1;
unsigned int SKIP_AUTO_STATE_ADVANCE:1;
unsigned int DISABLE_PSR_ENTRY_ABORT:1;
unsigned int RESERVED:23;
unsigned int SKIP_SINGLE_OTG_DISABLE:1;
unsigned int RESERVED:22;
} bits;
unsigned int u32all;
};