For suspend/resume to work correctly, do for colorop state the same we
do for plane/crtc/connector states: duplicate the state of colorops in a
color pipeline if it's in use by a given plane when suspending and
restore cached colorop states when resuming.
Fixes: 2afc3184f3b3 ("drm/plane: Add COLOR PIPELINE property")
Signed-off-by: Melissa Wen <[email protected]>
---
Hi,
I've been working on making gamescope use KMS plane color API, instead
of AMD driver-specific color properties [1] and I found this issue
during Steam Deck suspend/resume process.
Initially I thought I should also set plane color_mgmt_changed to make
AMD driver reprogram the color state, but looks like it's not needed
(still testing). Therefore, I think the change here is enough to fix it.
It applies on top of drm-misc-next and is inspired by commit
6955d6bca053 ("drm/atomic: Add affected colorops with affected planes").
[1] https://github.com/ValveSoftware/gamescope/pull/2113
drivers/gpu/drm/drm_atomic_helper.c | 12 ++++++++++++
include/drm/drm_atomic.h | 3 ++-
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c
b/drivers/gpu/drm/drm_atomic_helper.c
index 26953ed6b53e..683a0e207f71 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -3751,6 +3751,13 @@ drm_atomic_helper_duplicate_state(struct drm_device *dev,
err = PTR_ERR(plane_state);
goto free;
}
+
+ if (plane_state->color_pipeline) {
+ err = drm_atomic_add_affected_colorops(state, plane);
+ if (err)
+ goto free;
+ }
+
}
drm_connector_list_iter_begin(dev, &conn_iter);
@@ -3856,6 +3863,8 @@ int drm_atomic_helper_commit_duplicated_state(struct
drm_atomic_state *state,
int i, ret;
struct drm_plane *plane;
struct drm_plane_state *new_plane_state;
+ struct drm_colorop *colorop;
+ struct drm_colorop_state *new_colorop_state;
struct drm_connector *connector;
struct drm_connector_state *new_conn_state;
struct drm_crtc *crtc;
@@ -3866,6 +3875,9 @@ int drm_atomic_helper_commit_duplicated_state(struct
drm_atomic_state *state,
for_each_new_plane_in_state(state, plane, new_plane_state, i)
state->planes[i].old_state = plane->state;
+ for_each_new_colorop_in_state(state, colorop, new_colorop_state, i)
+ state->colorops[i].old_state = colorop->state;
+
for_each_new_crtc_in_state(state, crtc, new_crtc_state, i)
state->crtcs[i].old_state = crtc->state;
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 0b1b32bcd2bd..96fd32a3e92c 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -1102,7 +1102,8 @@ void drm_state_dump(struct drm_device *dev, struct
drm_printer *p);
for_each_if ((__state)->colorops[__i].ptr && \
((colorop) = (__state)->colorops[__i].ptr, \
(void)(colorop) /* Only to avoid
unused-but-set-variable warning */, \
- (new_colorop_state) =
(__state)->colorops[__i].new_state, 1))
+ (new_colorop_state) =
(__state)->colorops[__i].new_state,\
+ (void)(new_colorop_state) /* Only to avoid
unused-but-set-variable warning */, 1))
/**
* for_each_oldnew_plane_in_state - iterate over all planes in an atomic update
--
2.51.0
