diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 15 |
1 files changed, 15 insertions, 0 deletions
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 5bf71a65f056..752179b359f1 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2389,6 +2389,8 @@ 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... */ @@ -2419,6 +2421,19 @@ 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. |