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path: root/drivers/gpu/drm/imx/ipuv3-plane.c
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Diffstat (limited to 'drivers/gpu/drm/imx/ipuv3-plane.c')
-rw-r--r--drivers/gpu/drm/imx/ipuv3-plane.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
index 4ad67d015ec7..29423e757d36 100644
--- a/drivers/gpu/drm/imx/ipuv3-plane.c
+++ b/drivers/gpu/drm/imx/ipuv3-plane.c
@@ -319,13 +319,14 @@ static int ipu_plane_atomic_check(struct drm_plane *plane,
return -EINVAL;
/*
- * since we cannot touch active IDMAC channels, we do not support
- * resizing the enabled plane or changing its format
+ * We support resizing active plane or changing its format by
+ * forcing CRTC mode change and disabling-enabling plane in plane's
+ * ->atomic_update callback.
*/
if (old_fb && (state->src_w != old_state->src_w ||
state->src_h != old_state->src_h ||
fb->pixel_format != old_fb->pixel_format))
- return -EINVAL;
+ crtc_state->mode_changed = true;
eba = drm_plane_state_to_eba(state);
@@ -336,7 +337,7 @@ static int ipu_plane_atomic_check(struct drm_plane *plane,
return -EINVAL;
if (old_fb && fb->pitches[0] != old_fb->pitches[0])
- return -EINVAL;
+ crtc_state->mode_changed = true;
switch (fb->pixel_format) {
case DRM_FORMAT_YUV420:
@@ -372,7 +373,7 @@ static int ipu_plane_atomic_check(struct drm_plane *plane,
return -EINVAL;
if (old_fb && old_fb->pitches[1] != fb->pitches[1])
- return -EINVAL;
+ crtc_state->mode_changed = true;
}
return 0;
@@ -392,8 +393,14 @@ static void ipu_plane_atomic_update(struct drm_plane *plane,
enum ipu_color_space ics;
if (old_state->fb) {
- ipu_plane_atomic_set_base(ipu_plane, old_state);
- return;
+ struct drm_crtc_state *crtc_state = state->crtc->state;
+
+ if (!crtc_state->mode_changed) {
+ ipu_plane_atomic_set_base(ipu_plane, old_state);
+ return;
+ }
+
+ ipu_disable_plane(plane);
}
switch (ipu_plane->dp_flow) {