diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4269-drm-amdgpu-display-add-dc-feature-mask-for-psr-enabl.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4269-drm-amdgpu-display-add-dc-feature-mask-for-psr-enabl.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4269-drm-amdgpu-display-add-dc-feature-mask-for-psr-enabl.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4269-drm-amdgpu-display-add-dc-feature-mask-for-psr-enabl.patch new file mode 100644 index 00000000..a65a287e --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/4269-drm-amdgpu-display-add-dc-feature-mask-for-psr-enabl.patch @@ -0,0 +1,51 @@ +From 01086a885fa31e3d4a9047d8cdddf21decd987f1 Mon Sep 17 00:00:00 2001 +From: Roman Li <Roman.Li@amd.com> +Date: Tue, 1 Oct 2019 09:45:38 -0400 +Subject: [PATCH 4269/4736] drm/amdgpu/display: add dc feature mask for psr + enablement + +[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> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++- + drivers/gpu/drm/amd/include/amd_shared.h | 1 + + 2 files changed, 3 insertions(+), 1 deletion(-) + +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 8139cffd5b88..ff89ca40f82c 100755 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +@@ -2406,7 +2406,8 @@ 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); +- amdgpu_dm_set_psr_caps(link); ++ if (amdgpu_dc_feature_mask & DC_PSR_MASK) ++ amdgpu_dm_set_psr_caps(link); + } + + +diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h +index 8889aaceec60..8340ec0ab792 100644 +--- a/drivers/gpu/drm/amd/include/amd_shared.h ++++ b/drivers/gpu/drm/amd/include/amd_shared.h +@@ -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; +-- +2.17.1 + |