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drm/msm: subclass drm_atomic_state

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This will give the kms backends a slot to stash their own hw specific
global state.

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark
2016-11-04 13:51:42 -04:00
parent c056b55dc6
commit 870d738acb
4 changed files with 51 additions and 0 deletions
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31
drivers/gpu/drm/msm/msm_atomic.c
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@@ -241,6 +241,10 @@ int msm_atomic_commit(struct drm_device *dev,
drm_atomic_helper_swap_state(state, true);
/* swap driver private state while still holding state_lock */
if (to_kms_state(state)->state)
priv->kms->funcs->swap_state(priv->kms, state);
/*
* Everything below can be run asynchronously without the need to grab
* any modeset locks at all under one conditions: It must be guaranteed
@@ -271,3 +275,30 @@ error:
drm_atomic_helper_cleanup_planes(dev, state);
return ret;
}
struct drm_atomic_state *msm_atomic_state_alloc(struct drm_device *dev)
{
struct msm_kms_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state || drm_atomic_state_init(dev, &state->base) < 0) {
kfree(state);
return NULL;
}
return &state->base;
}
void msm_atomic_state_clear(struct drm_atomic_state *s)
{
struct msm_kms_state *state = to_kms_state(s);
drm_atomic_state_default_clear(&state->base);
kfree(state->state);
state->state = NULL;
}
void msm_atomic_state_free(struct drm_atomic_state *state)
{
kfree(to_kms_state(state)->state);
drm_atomic_state_default_release(state);
kfree(state);
}