From: Aurabindo Pillai Date: Tue, 7 Dec 2021 17:14:40 +0000 (-0500) Subject: drm/amd/display: Add feature flags to disable LTTPR X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=123202744955e62470174fc3ba666a4d98062ea6;p=linux.git drm/amd/display: Add feature flags to disable LTTPR [Why] Allow for disabling non transparent mode of LTTPR for running tests. [How] Add a feature flag and set them during init sequence. The flags are already being used in DC. Signed-off-by: Aurabindo Pillai Acked-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 151f3559e0ae4..c38d6da7befbd 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1453,6 +1453,13 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) if (amdgpu_dc_feature_mask & DC_EDP_NO_POWER_SEQUENCING) init_data.flags.edp_no_power_sequencing = true; +#ifdef CONFIG_DRM_AMD_DC_DCN + if (amdgpu_dc_feature_mask & DC_DISABLE_LTTPR_DP1_4A) + init_data.flags.allow_lttpr_non_transparent_mode.bits.DP1_4A = true; + if (amdgpu_dc_feature_mask & DC_DISABLE_LTTPR_DP2_0) + init_data.flags.allow_lttpr_non_transparent_mode.bits.DP2_0 = true; +#endif + init_data.flags.power_down_display_on_boot = true; if (check_seamless_boot_capability(adev)) { diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h index 4b9e68a79f068..f57a1478f0fed 100644 --- a/drivers/gpu/drm/amd/include/amd_shared.h +++ b/drivers/gpu/drm/amd/include/amd_shared.h @@ -231,6 +231,8 @@ enum DC_FEATURE_MASK { DC_DISABLE_FRACTIONAL_PWM_MASK = (1 << 2), //0x4, disabled by default DC_PSR_MASK = (1 << 3), //0x8, disabled by default for dcn < 3.1 DC_EDP_NO_POWER_SEQUENCING = (1 << 4), //0x10, disabled by default + DC_DISABLE_LTTPR_DP1_4A = (1 << 5), //0x20, disabled by default + DC_DISABLE_LTTPR_DP2_0 = (1 << 6), //0x40, disabled by default }; enum DC_DEBUG_MASK {