diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1830-drm-amd-display-Add-power-down-display-on-boot-flag.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1830-drm-amd-display-Add-power-down-display-on-boot-flag.patch | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1830-drm-amd-display-Add-power-down-display-on-boot-flag.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1830-drm-amd-display-Add-power-down-display-on-boot-flag.patch new file mode 100644 index 00000000..69ca6e39 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1830-drm-amd-display-Add-power-down-display-on-boot-flag.patch @@ -0,0 +1,69 @@ +From 704a44a7f94c85f9550967ac28c15b6e106769b5 Mon Sep 17 00:00:00 2001 +From: Thomas Lim <Thomas.Lim@amd.com> +Date: Wed, 10 Apr 2019 17:06:07 -0400 +Subject: [PATCH 1830/2940] drm/amd/display: Add power down display on boot + flag + +[Why] + +Due to the generic introduction of seamless boot, the display is no +longer blanked upon boot. However, this causes corruption on some +systems that does not lock the memory in the non-secure boot case, +resulting in brief corruption on boot due to garbage being written into +the frame buffer. + +[How] +Add a flag, read during DC init, to determine whether display should be +blanked on boot. Default to true. + +Signed-off-by: Thomas Lim <Thomas.Lim@amd.com> +Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> +Acked-by: Anthony Koo <Anthony.Koo@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++ + drivers/gpu/drm/amd/display/dc/dc.h | 1 + + drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 2 +- + 3 files changed, 4 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 2c420fddf088..b62e0ecefb40 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +@@ -534,6 +534,8 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) + if (amdgpu_dc_feature_mask & DC_FBC_MASK) + init_data.flags.fbc_support = true; + ++ init_data.flags.power_down_display_on_boot = true; ++ + /* Display Core create. */ + adev->dm.dc = dc_create(&init_data); + +diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h +index e84b06263fe9..7b040da89925 100644 +--- a/drivers/gpu/drm/amd/display/dc/dc.h ++++ b/drivers/gpu/drm/amd/display/dc/dc.h +@@ -207,6 +207,7 @@ struct dc_config { + bool optimize_edp_link_rate; + bool disable_fractional_pwm; + bool allow_seamless_boot_optimization; ++ bool power_down_display_on_boot; + }; + + enum visual_confirm { +diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +index b577c95d420b..4f144ac42380 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +@@ -1118,7 +1118,7 @@ static void dcn10_init_hw(struct dc *dc) + * Otherwise, if taking control is not possible, we need to power + * everything down. + */ +- if (dcb->funcs->is_accelerated_mode(dcb)) { ++ if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) { + for (i = 0; i < dc->res_pool->pipe_count; i++) { + struct hubp *hubp = dc->res_pool->hubps[i]; + struct dpp *dpp = dc->res_pool->dpps[i]; +-- +2.17.1 + |