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drm/omap: cleanup omap_plane_atomic_check() 

Clean up omap_plane_atomic_check() with:

- Check state->fb first. If no fb, return 0.
- use drm_atomic_get_existing_crtc_state() instead of
  drm_atomic_get_crtc_state()

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Tomi Valkeinen 2016-06-10 12:50:53 +03:00
parent aaf7642e98
commit 70dd2a62aa
1 changed files with 12 additions and 9 deletions
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21
drivers/gpu/drm/omapdrm/omap_plane.c
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@ -157,12 +157,17 @@ static int omap_plane_atomic_check(struct drm_plane *plane,
{
struct drm_crtc_state *crtc_state;
if (!state->crtc)
if (!state->fb)
return 0;
crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
/* crtc should only be NULL when disabling (i.e., !state->fb) */
if (WARN_ON(!state->crtc))
return 0;
crtc_state = drm_atomic_get_existing_crtc_state(state->state, state->crtc);
/* we should have a crtc state if the plane is attached to a crtc */
if (WARN_ON(!crtc_state))
return 0;
if (!crtc_state->enable)
return 0;
@ -176,11 +181,9 @@ static int omap_plane_atomic_check(struct drm_plane *plane,
if (state->crtc_y + state->crtc_h > crtc_state->adjusted_mode.vdisplay)
return -EINVAL;
if (state->fb) {
if (state->rotation != DRM_ROTATE_0 &&
!omap_framebuffer_supports_rotation(state->fb))
return -EINVAL;
}
if (state->rotation != DRM_ROTATE_0 &&
!omap_framebuffer_supports_rotation(state->fb))
return -EINVAL;
return 0;
}