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drm/sun4i: backend: Add a custom plane state 

We will need to store some additional data in the future to the state.
Create a custom plane state that will embed those data, in order to store
the pipe or whether or not that plane should use the frontend.

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/88dd9c2b0caa550595e7b2ff37dc9d0af2c78609.1516613040.git-series.maxime.ripard@free-electrons.com
This commit is contained in:
Maxime Ripard 2018-01-22 10:25:18 +01:00
parent 9f4ebf670d
commit d540f82adf
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GPG Key ID: D2B4C094214DAF74
2 changed files with 57 additions and 3 deletions
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50
drivers/gpu/drm/sun4i/sun4i_layer.c
View File

@ -25,6 +25,50 @@ struct sun4i_plane_desc {
uint32_t nformats;
};
static void sun4i_backend_layer_reset(struct drm_plane *plane)
{
struct sun4i_layer_state *state;
if (plane->state) {
state = state_to_sun4i_layer_state(plane->state);
__drm_atomic_helper_plane_destroy_state(&state->state);
kfree(state);
plane->state = NULL;
}
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (state) {
plane->state = &state->state;
plane->state->plane = plane;
}
}
static struct drm_plane_state *
sun4i_backend_layer_duplicate_state(struct drm_plane *plane)
{
struct sun4i_layer_state *copy;
copy = kzalloc(sizeof(*copy), GFP_KERNEL);
if (!copy)
return NULL;
__drm_atomic_helper_plane_duplicate_state(plane, &copy->state);
return &copy->state;
}
static void sun4i_backend_layer_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct sun4i_layer_state *s_state = state_to_sun4i_layer_state(state);
__drm_atomic_helper_plane_destroy_state(state);
kfree(s_state);
}
static void sun4i_backend_layer_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
@ -52,11 +96,11 @@ static const struct drm_plane_helper_funcs sun4i_backend_layer_helper_funcs = {
};
static const struct drm_plane_funcs sun4i_backend_layer_funcs = {
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = sun4i_backend_layer_destroy_state,
.atomic_duplicate_state = sun4i_backend_layer_duplicate_state,
.destroy = drm_plane_cleanup,
.disable_plane = drm_atomic_helper_disable_plane,
.reset = drm_atomic_helper_plane_reset,
.reset = sun4i_backend_layer_reset,
.update_plane = drm_atomic_helper_update_plane,
};

10
drivers/gpu/drm/sun4i/sun4i_layer.h
View File

@ -22,12 +22,22 @@ struct sun4i_layer {
int id;
};
struct sun4i_layer_state {
struct drm_plane_state state;
};
static inline struct sun4i_layer *
plane_to_sun4i_layer(struct drm_plane *plane)
{
return container_of(plane, struct sun4i_layer, plane);
}
static inline struct sun4i_layer_state *
state_to_sun4i_layer_state(struct drm_plane_state *state)
{
return container_of(state, struct sun4i_layer_state, state);
}
struct drm_plane **sun4i_layers_init(struct drm_device *drm,
struct sunxi_engine *engine);