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driver: rknpu: add power get/put for drm free memory

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Signed-off-by: Shuangjie Lin <shuangjie.lin@rock-chips.com>
Change-Id: I2adc5888babf323372a6bd967576c693c7414b8d
This commit is contained in:
Shuangjie Lin
2024-04-16 10:30:13 +08:00
committed by Tao Huang
parent e307e7a97d
commit 8d69ac3dcf
3 changed files with 22 additions and 4 deletions
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1
drivers/rknpu/include/rknpu_drv.h
View File

@@ -179,5 +179,6 @@ struct rknpu_session {
int rknpu_power_get(struct rknpu_device *rknpu_dev);
int rknpu_power_put(struct rknpu_device *rknpu_dev);
int rknpu_power_put_delay(struct rknpu_device *rknpu_dev);
#endif /* __LINUX_RKNPU_DRV_H_ */

21
drivers/rknpu/rknpu_drv.c
View File

@@ -263,13 +263,20 @@ static int rknpu_power_off(struct rknpu_device *rknpu_dev);
static void rknpu_power_off_delay_work(struct work_struct *power_off_work)
{
int ret = 0;
struct rknpu_device *rknpu_dev =
container_of(to_delayed_work(power_off_work),
struct rknpu_device, power_off_work);
mutex_lock(&rknpu_dev->power_lock);
if (atomic_dec_if_positive(&rknpu_dev->power_refcount) == 0)
rknpu_power_off(rknpu_dev);
if (atomic_dec_if_positive(&rknpu_dev->power_refcount) == 0) {
ret = rknpu_power_off(rknpu_dev);
if (ret)
atomic_inc(&rknpu_dev->power_refcount);
}
mutex_unlock(&rknpu_dev->power_lock);
if (ret)
rknpu_power_put_delay(rknpu_dev);
}
int rknpu_power_get(struct rknpu_device *rknpu_dev)
@@ -289,14 +296,20 @@ int rknpu_power_put(struct rknpu_device *rknpu_dev)
int ret = 0;
mutex_lock(&rknpu_dev->power_lock);
if (atomic_dec_if_positive(&rknpu_dev->power_refcount) == 0)
if (atomic_dec_if_positive(&rknpu_dev->power_refcount) == 0) {
ret = rknpu_power_off(rknpu_dev);
if (ret)
atomic_inc(&rknpu_dev->power_refcount);
}
mutex_unlock(&rknpu_dev->power_lock);
if (ret)
rknpu_power_put_delay(rknpu_dev);
return ret;
}
static int rknpu_power_put_delay(struct rknpu_device *rknpu_dev)
int rknpu_power_put_delay(struct rknpu_device *rknpu_dev)
{
if (rknpu_dev->power_put_delay == 0)
return rknpu_power_put(rknpu_dev);

4
drivers/rknpu/rknpu_gem.c
View File

@@ -1019,7 +1019,11 @@ static int rknpu_gem_mmap_buffer(struct rknpu_gem_object *rknpu_obj,
void rknpu_gem_free_object(struct drm_gem_object *obj)
{
struct rknpu_device *rknpu_dev = obj->dev->dev_private;
rknpu_power_get(rknpu_dev);
rknpu_gem_object_destroy(to_rknpu_obj(obj));
rknpu_power_put_delay(rknpu_dev);
}
int rknpu_gem_dumb_create(struct drm_file *file_priv, struct drm_device *drm,