From: Charlene Liu Date: Tue, 25 Jul 2017 01:41:28 +0000 (-0400) Subject: drm/amd/display: single PSR display not allow CSTATE sw w/a X-Git-Tag: v5.15~9960^2~23^2~275 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ee356d8f4fff35510b83aa71299ddc0ccb798d58;p=platform%2Fkernel%2Flinux-starfive.git 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 Reviewed-by: Anthony Koo Acked-by: Harry Wentland Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index e706206..fd2ae18 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -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. diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h index c7539fe..99b893f 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_types.h @@ -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; };