diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 27 |
1 files changed, 26 insertions, 1 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 8ff10d1b633f..f47551c9b2f1 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6411,8 +6411,33 @@ static int dm_plane_helper_check_state(struct drm_plane_state *state, int min_scale = 0; int max_scale = INT_MAX; - /* Plane enabled? Get min/max allowed scaling factors from plane caps. */ + /* Plane enabled? Validate viewport and get scaling factors from plane caps. */ if (fb && state->crtc) { + /* Validate viewport to cover the case when only the position changes */ + if (state->plane->type != DRM_PLANE_TYPE_CURSOR) { + int viewport_width = state->crtc_w; + int viewport_height = state->crtc_h; + + if (state->crtc_x < 0) + viewport_width += state->crtc_x; + else if (state->crtc_x + state->crtc_w > new_crtc_state->mode.crtc_hdisplay) + viewport_width = new_crtc_state->mode.crtc_hdisplay - state->crtc_x; + + if (state->crtc_y < 0) + viewport_height += state->crtc_y; + else if (state->crtc_y + state->crtc_h > new_crtc_state->mode.crtc_vdisplay) + viewport_height = new_crtc_state->mode.crtc_vdisplay - state->crtc_y; + + /* If completely outside of screen, viewport_width and/or viewport_height will be negative, + * which is still OK to satisfy the condition below, thereby also covering these cases + * (when plane is completely outside of screen). + * x2 for width is because of pipe-split. + */ + if (viewport_width < MIN_VIEWPORT_SIZE*2 || viewport_height < MIN_VIEWPORT_SIZE) + return -EINVAL; + } + + /* Get min/max allowed scaling factors from plane caps. */ get_min_max_dc_plane_scaling(state->crtc->dev, fb, &min_downscale, &max_upscale); /* |