mutex_unlock(rp_lock);
}
-/**
- * _dpu_crtc_rp_add_no_lock - add given resource to resource pool without lock
- * @rp: Pointer to original resource pool
- * @type: Resource type
- * @tag: Search tag for given resource
- * @val: Resource handle
- * @ops: Resource callback operations
- * return: 0 if success; error code otherwise
- */
-static int _dpu_crtc_rp_add_no_lock(struct dpu_crtc_respool *rp, u32 type,
- u64 tag, void *val, struct dpu_crtc_res_ops *ops)
-{
- struct dpu_crtc_res *res;
- struct drm_crtc *crtc;
-
- if (!rp || !ops) {
- DPU_ERROR("invalid resource pool/ops\n");
- return -EINVAL;
- }
-
- crtc = _dpu_crtc_rp_to_crtc(rp);
- if (!crtc) {
- DPU_ERROR("invalid crtc\n");
- return -EINVAL;
- }
-
- list_for_each_entry(res, &rp->res_list, list) {
- if (res->type != type || res->tag != tag)
- continue;
- DPU_ERROR("crtc%d.%u already exist res:0x%x/0x%llx/%pK/%d\n",
- crtc->base.id, rp->sequence_id,
- res->type, res->tag, res->val,
- atomic_read(&res->refcount));
- return -EEXIST;
- }
- res = kzalloc(sizeof(struct dpu_crtc_res), GFP_KERNEL);
- if (!res)
- return -ENOMEM;
- INIT_LIST_HEAD(&res->list);
- atomic_set(&res->refcount, 1);
- res->type = type;
- res->tag = tag;
- res->val = val;
- res->ops = *ops;
- list_add_tail(&res->list, &rp->res_list);
- DPU_DEBUG("crtc%d.%u added res:0x%x/0x%llx\n",
- crtc->base.id, rp->sequence_id, type, tag);
- return 0;
-}
-
-/**
- * _dpu_crtc_rp_add - add given resource to resource pool
- * @rp: Pointer to original resource pool
- * @type: Resource type
- * @tag: Search tag for given resource
- * @val: Resource handle
- * @ops: Resource callback operations
- * return: 0 if success; error code otherwise
- */
-static int _dpu_crtc_rp_add(struct dpu_crtc_respool *rp, u32 type, u64 tag,
- void *val, struct dpu_crtc_res_ops *ops)
-{
- int rc;
-
- if (!rp) {
- DPU_ERROR("invalid resource pool\n");
- return -EINVAL;
- }
-
- mutex_lock(rp->rp_lock);
- rc = _dpu_crtc_rp_add_no_lock(rp, type, tag, val, ops);
- mutex_unlock(rp->rp_lock);
- return rc;
-}
-
-/**
- * _dpu_crtc_rp_get - lookup the resource from given resource pool and obtain
- * if available; otherwise, obtain resource from global pool
- * @rp: Pointer to original resource pool
- * @type: Resource type
- * @tag: Search tag for given resource
- * return: Resource handle if success; pointer error or null otherwise
- */
-static void *_dpu_crtc_rp_get(struct dpu_crtc_respool *rp, u32 type, u64 tag)
-{
- struct dpu_crtc_respool *old_rp;
- struct dpu_crtc_res *res;
- void *val = NULL;
- int rc;
- struct drm_crtc *crtc;
-
- if (!rp) {
- DPU_ERROR("invalid resource pool\n");
- return NULL;
- }
-
- crtc = _dpu_crtc_rp_to_crtc(rp);
- if (!crtc) {
- DPU_ERROR("invalid crtc\n");
- return NULL;
- }
-
- mutex_lock(rp->rp_lock);
- list_for_each_entry(res, &rp->res_list, list) {
- if (res->type != type || res->tag != tag)
- continue;
- DPU_DEBUG("crtc%d.%u found res:0x%x/0x%llx/%pK/%d\n",
- crtc->base.id, rp->sequence_id,
- res->type, res->tag, res->val,
- atomic_read(&res->refcount));
- atomic_inc(&res->refcount);
- res->flags &= ~DPU_CRTC_RES_FLAG_FREE;
- mutex_unlock(rp->rp_lock);
- return res->val;
- }
- list_for_each_entry(res, &rp->res_list, list) {
- if (res->type != type || !(res->flags & DPU_CRTC_RES_FLAG_FREE))
- continue;
- DPU_DEBUG("crtc%d.%u retag res:0x%x/0x%llx/%pK/%d\n",
- crtc->base.id, rp->sequence_id,
- res->type, res->tag, res->val,
- atomic_read(&res->refcount));
- atomic_inc(&res->refcount);
- res->tag = tag;
- res->flags &= ~DPU_CRTC_RES_FLAG_FREE;
- mutex_unlock(rp->rp_lock);
- return res->val;
- }
- /* not in this rp, try to grab from global pool */
- if (rp->ops.get)
- val = rp->ops.get(NULL, type, -1);
- if (!IS_ERR_OR_NULL(val))
- goto add_res;
- /*
- * Search older resource pools for hw blk with matching type,
- * necessary when resource is being used by this object,
- * but in previous states not yet cleaned up.
- *
- * This enables searching of all resources currently owned
- * by this crtc even though the resource might not be used
- * in the current atomic state. This allows those resources
- * to be re-acquired by the new atomic state immediately
- * without waiting for the resources to be fully released.
- */
- else if (IS_ERR_OR_NULL(val) && (type < DPU_HW_BLK_MAX)) {
- list_for_each_entry(old_rp, rp->rp_head, rp_list) {
- if (old_rp == rp)
- continue;
-
- list_for_each_entry(res, &old_rp->res_list, list) {
- if (res->type != type)
- continue;
- DRM_DEBUG_KMS("crtc%d.%u found res:0x%x//%pK/ "
- "in crtc%d.%d\n",
- crtc->base.id, rp->sequence_id,
- res->type, res->val,
- crtc->base.id,
- old_rp->sequence_id);
- if (res->ops.get)
- res->ops.get(res->val, 0, -1);
- val = res->val;
- break;
- }
-
- if (!IS_ERR_OR_NULL(val))
- break;
- }
- }
- if (IS_ERR_OR_NULL(val)) {
- DPU_DEBUG("crtc%d.%u failed to get res:0x%x//\n",
- crtc->base.id, rp->sequence_id, type);
- mutex_unlock(rp->rp_lock);
- return NULL;
- }
-add_res:
- rc = _dpu_crtc_rp_add_no_lock(rp, type, tag, val, &rp->ops);
- if (rc) {
- DPU_ERROR("crtc%d.%u failed to add res:0x%x/0x%llx\n",
- crtc->base.id, rp->sequence_id, type, tag);
- if (rp->ops.put)
- rp->ops.put(val);
- val = NULL;
- }
- mutex_unlock(rp->rp_lock);
- return val;
-}
-
-/**
- * _dpu_crtc_rp_put - return given resource to resource pool
- * @rp: Pointer to original resource pool
- * @type: Resource type
- * @tag: Search tag for given resource
- * return: None
- */
-static void _dpu_crtc_rp_put(struct dpu_crtc_respool *rp, u32 type, u64 tag)
-{
- struct dpu_crtc_res *res, *next;
- struct drm_crtc *crtc;
-
- if (!rp) {
- DPU_ERROR("invalid resource pool\n");
- return;
- }
-
- crtc = _dpu_crtc_rp_to_crtc(rp);
- if (!crtc) {
- DPU_ERROR("invalid crtc\n");
- return;
- }
-
- mutex_lock(rp->rp_lock);
- list_for_each_entry_safe(res, next, &rp->res_list, list) {
- if (res->type != type || res->tag != tag)
- continue;
- DPU_DEBUG("crtc%d.%u found res:0x%x/0x%llx/%pK/%d\n",
- crtc->base.id, rp->sequence_id,
- res->type, res->tag, res->val,
- atomic_read(&res->refcount));
- if (res->flags & DPU_CRTC_RES_FLAG_FREE)
- DPU_ERROR(
- "crtc%d.%u already free res:0x%x/0x%llx/%pK/%d\n",
- crtc->base.id, rp->sequence_id,
- res->type, res->tag, res->val,
- atomic_read(&res->refcount));
- else if (atomic_dec_return(&res->refcount) == 0)
- res->flags |= DPU_CRTC_RES_FLAG_FREE;
-
- mutex_unlock(rp->rp_lock);
- return;
- }
- DPU_ERROR("crtc%d.%u not found res:0x%x/0x%llx\n",
- crtc->base.id, rp->sequence_id, type, tag);
- mutex_unlock(rp->rp_lock);
-}
-
-int dpu_crtc_res_add(struct drm_crtc_state *state, u32 type, u64 tag,
- void *val, struct dpu_crtc_res_ops *ops)
-{
- struct dpu_crtc_respool *rp;
-
- if (!state) {
- DPU_ERROR("invalid parameters\n");
- return -EINVAL;
- }
-
- rp = &to_dpu_crtc_state(state)->rp;
- return _dpu_crtc_rp_add(rp, type, tag, val, ops);
-}
-
-void *dpu_crtc_res_get(struct drm_crtc_state *state, u32 type, u64 tag)
-{
- struct dpu_crtc_respool *rp;
- void *val;
-
- if (!state) {
- DPU_ERROR("invalid parameters\n");
- return NULL;
- }
-
- rp = &to_dpu_crtc_state(state)->rp;
- val = _dpu_crtc_rp_get(rp, type, tag);
- if (IS_ERR(val)) {
- DPU_ERROR("failed to get res type:0x%x:0x%llx\n",
- type, tag);
- return NULL;
- }
-
- return val;
-}
-
-void dpu_crtc_res_put(struct drm_crtc_state *state, u32 type, u64 tag)
-{
- struct dpu_crtc_respool *rp;
-
- if (!state) {
- DPU_ERROR("invalid parameters\n");
- return;
- }
-
- rp = &to_dpu_crtc_state(state)->rp;
- _dpu_crtc_rp_put(rp, type, tag);
-}
-
static void dpu_crtc_destroy(struct drm_crtc *crtc)
{
struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc);
.atomic_flush = dpu_crtc_atomic_flush,
};
-static void _dpu_crtc_event_cb(struct kthread_work *work)
-{
- struct dpu_crtc_event *event;
- struct dpu_crtc *dpu_crtc;
- unsigned long irq_flags;
-
- if (!work) {
- DPU_ERROR("invalid work item\n");
- return;
- }
-
- event = container_of(work, struct dpu_crtc_event, kt_work);
-
- /* set dpu_crtc to NULL for static work structures */
- dpu_crtc = event->dpu_crtc;
- if (!dpu_crtc)
- return;
-
- if (event->cb_func)
- event->cb_func(&dpu_crtc->base, event->usr);
-
- spin_lock_irqsave(&dpu_crtc->event_lock, irq_flags);
- list_add_tail(&event->list, &dpu_crtc->event_free_list);
- spin_unlock_irqrestore(&dpu_crtc->event_lock, irq_flags);
-}
-
-int dpu_crtc_event_queue(struct drm_crtc *crtc,
- void (*func)(struct drm_crtc *crtc, void *usr), void *usr)
-{
- unsigned long irq_flags;
- struct dpu_crtc *dpu_crtc;
- struct msm_drm_private *priv;
- struct dpu_crtc_event *event = NULL;
- u32 crtc_id;
-
- if (!crtc || !crtc->dev || !crtc->dev->dev_private || !func) {
- DPU_ERROR("invalid parameters\n");
- return -EINVAL;
- }
- dpu_crtc = to_dpu_crtc(crtc);
- priv = crtc->dev->dev_private;
- crtc_id = drm_crtc_index(crtc);
-
- /*
- * Obtain an event struct from the private cache. This event
- * queue may be called from ISR contexts, so use a private
- * cache to avoid calling any memory allocation functions.
- */
- spin_lock_irqsave(&dpu_crtc->event_lock, irq_flags);
- if (!list_empty(&dpu_crtc->event_free_list)) {
- event = list_first_entry(&dpu_crtc->event_free_list,
- struct dpu_crtc_event, list);
- list_del_init(&event->list);
- }
- spin_unlock_irqrestore(&dpu_crtc->event_lock, irq_flags);
-
- if (!event)
- return -ENOMEM;
-
- /* populate event node */
- event->dpu_crtc = dpu_crtc;
- event->cb_func = func;
- event->usr = usr;
-
- /* queue new event request */
- kthread_init_work(&event->kt_work, _dpu_crtc_event_cb);
- kthread_queue_work(&priv->event_thread[crtc_id].worker,
- &event->kt_work);
-
- return 0;
-}
-
-static int _dpu_crtc_init_events(struct dpu_crtc *dpu_crtc)
-{
- int i, rc = 0;
-
- if (!dpu_crtc) {
- DPU_ERROR("invalid crtc\n");
- return -EINVAL;
- }
-
- spin_lock_init(&dpu_crtc->event_lock);
-
- INIT_LIST_HEAD(&dpu_crtc->event_free_list);
- for (i = 0; i < DPU_CRTC_MAX_EVENT_COUNT; ++i)
- list_add_tail(&dpu_crtc->event_cache[i].list,
- &dpu_crtc->event_free_list);
-
- return rc;
-}
-
/* initialize crtc */
struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane)
{
struct dpu_crtc *dpu_crtc = NULL;
struct msm_drm_private *priv = NULL;
struct dpu_kms *kms = NULL;
- int i, rc;
+ int i;
priv = dev->dev_private;
kms = to_dpu_kms(priv->kms);
snprintf(dpu_crtc->name, DPU_CRTC_NAME_SIZE, "crtc%u", crtc->base.id);
/* initialize event handling */
- rc = _dpu_crtc_init_events(dpu_crtc);
- if (rc) {
- drm_crtc_cleanup(crtc);
- kfree(dpu_crtc);
- return ERR_PTR(rc);
- }
+ spin_lock_init(&dpu_crtc->event_lock);
dpu_crtc->phandle = &kms->phandle;
u32 event;
};
-/**
- * struct dpu_crtc_event - event callback tracking structure
- * @list: Linked list tracking node
- * @kt_work: Kthread worker structure
- * @dpu_crtc: Pointer to associated dpu_crtc structure
- * @cb_func: Pointer to callback function
- * @usr: Pointer to user data to be provided to the callback
- */
-struct dpu_crtc_event {
- struct list_head list;
- struct kthread_work kt_work;
- void *dpu_crtc;
-
- void (*cb_func)(struct drm_crtc *crtc, void *usr);
- void *usr;
-};
-
/*
* Maximum number of free event structures to cache
*/
* @frame_done_comp : for frame_event_done synchronization
* @event_thread : Pointer to event handler thread
* @event_worker : Event worker queue
- * @event_cache : Local cache of event worker structures
- * @event_free_list : List of available event structures
* @event_lock : Spinlock around event handling code
* @misr_enable : boolean entry indicates misr enable/disable status.
* @misr_frame_count : misr frame count provided by client
struct completion frame_done_comp;
/* for handling internal event thread */
- struct dpu_crtc_event event_cache[DPU_CRTC_MAX_EVENT_COUNT];
- struct list_head event_free_list;
spinlock_t event_lock;
bool misr_enable;
u32 misr_frame_count;
return crtc ? crtc->enabled : false;
}
-/**
- * dpu_crtc_event_queue - request event callback
- * @crtc: Pointer to drm crtc structure
- * @func: Pointer to callback function
- * @usr: Pointer to user data to be passed to callback
- * Returns: Zero on success
- */
-int dpu_crtc_event_queue(struct drm_crtc *crtc,
- void (*func)(struct drm_crtc *crtc, void *usr), void *usr);
-
-/**
- * dpu_crtc_res_add - add given resource to resource pool in crtc state
- * @state: Pointer to drm crtc state
- * @type: Resource type
- * @tag: Search tag for given resource
- * @val: Resource handle
- * @ops: Resource callback operations
- * return: 0 if success; error code otherwise
- */
-int dpu_crtc_res_add(struct drm_crtc_state *state, u32 type, u64 tag,
- void *val, struct dpu_crtc_res_ops *ops);
-
-/**
- * dpu_crtc_res_get - get given resource from resource pool in crtc state
- * @state: Pointer to drm crtc state
- * @type: Resource type
- * @tag: Search tag for given resource
- * return: Resource handle if success; pointer error or null otherwise
- */
-void *dpu_crtc_res_get(struct drm_crtc_state *state, u32 type, u64 tag);
-
-/**
- * dpu_crtc_res_put - return given resource to resource pool in crtc state
- * @state: Pointer to drm crtc state
- * @type: Resource type
- * @tag: Search tag for given resource
- * return: None
- */
-void dpu_crtc_res_put(struct drm_crtc_state *state, u32 type, u64 tag);
-
#endif /* _DPU_CRTC_H_ */
projects / platform / kernel / linux-starfive.git / commitdiff