xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/atomic: integrate modeset lock with private objects

Browse Source 
Follow the same pattern of locking as with other state objects. This
avoids boilerplate in the driver.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20181022123122.30468-1-boris.brezillon@bootlin.com
This commit is contained in:
Rob Clark
2018-10-22 14:31:22 +02:00
committed by Boris Brezillon
parent cb8ce71111
commit b962a12050
9 changed files with 74 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/gpu/drm/drm_atomic.c
View File

@@ -676,6 +676,7 @@ static void drm_atomic_plane_print_state(struct drm_printer *p,
/**
* drm_atomic_private_obj_init - initialize private object
* @dev: DRM device this object will be attached to
* @obj: private object
* @state: initial private object state
* @funcs: pointer to the struct of function pointers that identify the object
@@ -685,14 +686,18 @@ static void drm_atomic_plane_print_state(struct drm_printer *p,
* driver private object that needs its own atomic state.
*/
void
drm_atomic_private_obj_init(struct drm_private_obj *obj,
drm_atomic_private_obj_init(struct drm_device *dev,
struct drm_private_obj *obj,
struct drm_private_state *state,
const struct drm_private_state_funcs *funcs)
{
memset(obj, 0, sizeof(*obj));
drm_modeset_lock_init(&obj->lock);
obj->state = state;
obj->funcs = funcs;
list_add_tail(&obj->head, &dev->mode_config.privobj_list);
}
EXPORT_SYMBOL(drm_atomic_private_obj_init);
@@ -705,7 +710,9 @@ EXPORT_SYMBOL(drm_atomic_private_obj_init);
void
drm_atomic_private_obj_fini(struct drm_private_obj *obj)
{
list_del(&obj->head);
obj->funcs->atomic_destroy_state(obj, obj->state);
drm_modeset_lock_fini(&obj->lock);
}
EXPORT_SYMBOL(drm_atomic_private_obj_fini);
@@ -715,8 +722,8 @@ EXPORT_SYMBOL(drm_atomic_private_obj_fini);
* @obj: private object to get the state for
*
* This function returns the private object state for the given private object,
* allocating the state if needed. It does not grab any locks as the caller is
* expected to care of any required locking.
* allocating the state if needed. It will also grab the relevant private
* object lock to make sure that the state is consistent.
*
* RETURNS:
*
@@ -726,7 +733,7 @@ struct drm_private_state *
drm_atomic_get_private_obj_state(struct drm_atomic_state *state,
struct drm_private_obj *obj)
{
int index, num_objs, i;
int index, num_objs, i, ret;
size_t size;
struct __drm_private_objs_state *arr;
struct drm_private_state *obj_state;
@@ -735,6 +742,10 @@ drm_atomic_get_private_obj_state(struct drm_atomic_state *state,
if (obj == state->private_objs[i].ptr)
return state->private_objs[i].state;
ret = drm_modeset_lock(&obj->lock, state->acquire_ctx);
if (ret)
return ERR_PTR(ret);
num_objs = state->num_private_objs + 1;
size = sizeof(*state->private_objs) * num_objs;
arr = krealloc(state->private_objs, size, GFP_KERNEL);