diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1783-drm-amd-display-Add-basic-downscale-and-upscale-vald.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1783-drm-amd-display-Add-basic-downscale-and-upscale-vald.patch | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1783-drm-amd-display-Add-basic-downscale-and-upscale-vald.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1783-drm-amd-display-Add-basic-downscale-and-upscale-vald.patch new file mode 100644 index 00000000..4ca739f4 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/1783-drm-amd-display-Add-basic-downscale-and-upscale-vald.patch @@ -0,0 +1,66 @@ +From bcb5aad1a584510d05a5fcbc22b8a3217e814503 Mon Sep 17 00:00:00 2001 +From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> +Date: Mon, 1 Apr 2019 09:43:34 -0400 +Subject: [PATCH 1783/2940] drm/amd/display: Add basic downscale and upscale + valdiation + +[Why] +Planes have downscaling limits and upscaling limits per format and DM +is expected to validate these using DC caps. We should fail atomic +check validation if we aren't capable of doing the scaling. + +[How] +We don't currently create store which DC plane maps to which DRM plane +so we can't easily check the caps directly. For now add basic +constraints that cover the absolute min and max downscale / upscale +limits for most RGB and YUV formats across ASICs. + +Leave a TODO indicating that these should really be done with DC caps. +We'll probably need to subclass DRM planes again in order to correctly +identify which DC plane maps to it. + +Change-Id: I18524d0e5d8a96ae3ae0e5d0eb3906092201a125 +Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> +Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet Lakha@amd.com> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 15 +++++++++++++++ + 1 file changed, 15 insertions(+) + +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 ba7bb3338abf..b86e9aeca3c8 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +@@ -2477,6 +2477,8 @@ static const struct drm_encoder_funcs amdgpu_dm_encoder_funcs = { + static int fill_dc_scaling_info(const struct drm_plane_state *state, + struct dc_scaling_info *scaling_info) + { ++ int scale_w, scale_h; ++ + memset(scaling_info, 0, sizeof(*scaling_info)); + + /* Source is fixed 16.16 but we ignore mantissa for now... */ +@@ -2507,6 +2509,19 @@ static int fill_dc_scaling_info(const struct drm_plane_state *state, + /* DRM doesn't specify clipping on destination output. */ + scaling_info->clip_rect = scaling_info->dst_rect; + ++ /* TODO: Validate scaling per-format with DC plane caps */ ++ scale_w = scaling_info->dst_rect.width * 1000 / ++ scaling_info->src_rect.width; ++ ++ if (scale_w < 250 || scale_w > 16000) ++ return -EINVAL; ++ ++ scale_h = scaling_info->dst_rect.height * 1000 / ++ scaling_info->src_rect.height; ++ ++ if (scale_h < 250 || scale_h > 16000) ++ return -EINVAL; ++ + /* + * The "scaling_quality" can be ignored for now, quality = 0 has DC + * assume reasonable defaults based on the format. +-- +2.17.1 + |