drm/amdgpu/display: add dc feature mask for psr enablement (397a9bc5) · Commits · 戴 / test

[Why] Adding psr mask to dc features allows selectively disable/enable psr. Current psr implementation may not work with non-pageflipping application. Until resolved it should be disabled by default. [How] Add dcfeaturemask for psr enablement. Disable by default. To enable set amdgpu.dcfeaturemask=0x8 in grub kernel command line. Signed-off-by:

Roman Li <Roman.Li@amd.com> Reviewed-by:

Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Signed-off-by:

Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -2424,6 +2424,7 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
		} else if (dc_link_detect(link, DETECT_REASON_BOOT)) {
		amdgpu_dm_update_connector_after_detect(aconnector);
		register_backlight_device(dm, link);
		if (amdgpu_dc_feature_mask & DC_PSR_MASK)
		amdgpu_dm_set_psr_caps(link);
		}

drivers/gpu/drm/amd/include/amd_shared.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -143,6 +143,7 @@ enum PP_FEATURE_MASK {
		enum DC_FEATURE_MASK {
		DC_FBC_MASK = 0x1,
		DC_MULTI_MON_PP_MCLK_SWITCH_MASK = 0x2,
		DC_PSR_MASK = 0x8,
		};

		enum amd_dpm_forced_level;

Admin message