The IPUv3 display controller behind imx-drm needs all planes of
a CRTC be disabled when the CRTC is disabled.
The DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET flag reflects this
hardware requirement. Let's use the flag for imx-drm.
Suggested-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Peter Senna Tschudin <peter.senna@xxxxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Signed-off-by: Liu Ying <gnuiyl@xxxxxxxxx>
---
v4:
* Newly introduced in v4, but some logic is picked from patch 3/3 in v3.
drivers/gpu/drm/imx/imx-drm-core.c | 3 ++-
drivers/gpu/drm/imx/ipuv3-crtc.c | 3 +++
drivers/gpu/drm/imx/ipuv3-plane.c | 8 ++++++--
3 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index 56dfc4c..99fff6c 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -194,7 +194,8 @@ static void imx_drm_atomic_commit_tail(struct drm_atomic_state *state)
drm_atomic_helper_commit_modeset_disables(dev, state);
drm_atomic_helper_commit_planes(dev, state,
- DRM_PLANE_COMMIT_ACTIVE_ONLY);
+ DRM_PLANE_COMMIT_ACTIVE_ONLY |
+ DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET);
drm_atomic_helper_commit_modeset_enables(dev, state);
diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
index 83c46bd..c3d5933 100644
--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -76,6 +76,9 @@ static void ipu_crtc_atomic_disable(struct drm_crtc *crtc,
crtc->state->event = NULL;
}
spin_unlock_irq(&crtc->dev->event_lock);
+
+ /* always disable planes on the CRTC */
+ drm_atomic_helper_disable_planes_on_crtc(old_crtc_state, true);
}
static void imx_drm_crtc_reset(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
index 4ad67d0..6a48147 100644
--- a/drivers/gpu/drm/imx/ipuv3-plane.c
+++ b/drivers/gpu/drm/imx/ipuv3-plane.c
@@ -392,8 +392,12 @@ 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 (!drm_atomic_crtc_needs_modeset(crtc_state)) {
+ ipu_plane_atomic_set_base(ipu_plane, old_state);
+ return;
+ }
}
switch (ipu_plane->dp_flow) {
--
2.7.4
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel
