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drm: mali-dp: add custom reset hook for planes

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Now that we are using a custom plane state in mali-dp, we need a
bespoke reset that takes into account the larger structure.

Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
[Updated commit message]
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
This commit is contained in:
Mihail Atanassov 2016-12-01 12:19:58 +00:00 committed by Liviu Dudau
parent c03c17c1f4
commit fe10cd677c
1 changed files with 22 additions and 1 deletions
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23
drivers/gpu/drm/arm/malidp_planes.c
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@ -61,6 +61,27 @@ static void malidp_de_plane_destroy(struct drm_plane *plane)
devm_kfree(plane->dev->dev, mp);
}
/*
* Replicate what the default ->reset hook does: free the state pointer and
* allocate a new empty object. We just need enough space to store
* a malidp_plane_state instead of a drm_plane_state.
*/
static void malidp_plane_reset(struct drm_plane *plane)
{
struct malidp_plane_state *state = to_malidp_plane_state(plane->state);
if (state)
__drm_atomic_helper_plane_destroy_state(&state->base);
kfree(state);
plane->state = NULL;
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (state) {
state->base.plane = plane;
state->base.rotation = DRM_ROTATE_0;
plane->state = &state->base;
}
}
static struct
drm_plane_state *malidp_duplicate_plane_state(struct drm_plane *plane)
{
@ -106,7 +127,7 @@ static const struct drm_plane_funcs malidp_de_plane_funcs = {
.disable_plane = drm_atomic_helper_disable_plane,
.set_property = drm_atomic_helper_plane_set_property,
.destroy = malidp_de_plane_destroy,
.reset = drm_atomic_helper_plane_reset,
.reset = malidp_plane_reset,
.atomic_duplicate_state = malidp_duplicate_plane_state,
.atomic_destroy_state = malidp_destroy_plane_state,
.atomic_print_state = malidp_plane_atomic_print_state,