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-rw-r--r--drivers/media/platform/exynos4-is/fimc-capture.c59
-rw-r--r--drivers/media/platform/exynos4-is/fimc-core.h2
-rw-r--r--drivers/media/platform/exynos4-is/fimc-lite.c23
-rw-r--r--drivers/media/platform/exynos4-is/fimc-lite.h2
-rw-r--r--drivers/media/platform/exynos4-is/media-dev.c12
5 files changed, 42 insertions, 56 deletions
diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c
index 07089de6c669..b6055d2b09d6 100644
--- a/drivers/media/platform/exynos4-is/fimc-capture.c
+++ b/drivers/media/platform/exynos4-is/fimc-capture.c
@@ -484,7 +484,6 @@ static int fimc_capture_open(struct file *file)
dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
- fimc_md_graph_lock(ve);
mutex_lock(&fimc->lock);
if (fimc_m2m_active(fimc))
@@ -502,6 +501,8 @@ static int fimc_capture_open(struct file *file)
}
if (v4l2_fh_is_singular_file(file)) {
+ fimc_md_graph_lock(ve);
+
ret = fimc_pipeline_call(fimc, open, &fimc->pipeline,
&fimc->vid_cap.ve.vdev.entity, true);
if (ret == 0)
@@ -518,18 +519,19 @@ static int fimc_capture_open(struct file *file)
if (ret == 0)
vc->inh_sensor_ctrls = false;
}
+ if (ret == 0)
+ ve->vdev.entity.use_count++;
+
+ fimc_md_graph_unlock(ve);
if (ret < 0) {
clear_bit(ST_CAPT_BUSY, &fimc->state);
pm_runtime_put_sync(&fimc->pdev->dev);
v4l2_fh_release(file);
- } else {
- fimc->vid_cap.refcnt++;
}
}
unlock:
mutex_unlock(&fimc->lock);
- fimc_md_graph_unlock(ve);
return ret;
}
@@ -537,26 +539,32 @@ static int fimc_capture_release(struct file *file)
{
struct fimc_dev *fimc = video_drvdata(file);
struct fimc_vid_cap *vc = &fimc->vid_cap;
+ bool close = v4l2_fh_is_singular_file(file);
int ret;
dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
mutex_lock(&fimc->lock);
- if (v4l2_fh_is_singular_file(file)) {
- if (vc->streaming) {
- media_entity_pipeline_stop(&vc->ve.vdev.entity);
- vc->streaming = false;
- }
+ if (close && vc->streaming) {
+ media_entity_pipeline_stop(&vc->ve.vdev.entity);
+ vc->streaming = false;
+ }
+
+ ret = vb2_fop_release(file);
+
+ if (close) {
clear_bit(ST_CAPT_BUSY, &fimc->state);
fimc_stop_capture(fimc, false);
fimc_pipeline_call(fimc, close, &fimc->pipeline);
clear_bit(ST_CAPT_SUSPENDED, &fimc->state);
- fimc->vid_cap.refcnt--;
+
+ fimc_md_graph_lock(&vc->ve);
+ vc->ve.vdev.entity.use_count--;
+ fimc_md_graph_unlock(&vc->ve);
}
pm_runtime_put(&fimc->pdev->dev);
- ret = vb2_fop_release(file);
mutex_unlock(&fimc->lock);
return ret;
@@ -921,9 +929,6 @@ static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
struct fimc_fmt *ffmt = NULL;
int ret = 0;
- fimc_md_graph_lock(ve);
- mutex_lock(&fimc->lock);
-
if (fimc_jpeg_fourcc(pix->pixelformat)) {
fimc_capture_try_format(ctx, &pix->width, &pix->height,
NULL, &pix->pixelformat,
@@ -934,16 +939,18 @@ static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height,
NULL, &pix->pixelformat,
FIMC_SD_PAD_SOURCE);
- if (!ffmt) {
- ret = -EINVAL;
- goto unlock;
- }
+ if (!ffmt)
+ return -EINVAL;
if (!fimc->vid_cap.user_subdev_api) {
mf.width = pix->width;
mf.height = pix->height;
mf.code = ffmt->mbus_code;
+
+ fimc_md_graph_lock(ve);
fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
+ fimc_md_graph_unlock(ve);
+
pix->width = mf.width;
pix->height = mf.height;
if (ffmt)
@@ -955,9 +962,6 @@ static int fimc_cap_try_fmt_mplane(struct file *file, void *fh,
if (ffmt->flags & FMT_FLAGS_COMPRESSED)
fimc_get_sensor_frame_desc(fimc->pipeline.subdevs[IDX_SENSOR],
pix->plane_fmt, ffmt->memplanes, true);
-unlock:
- mutex_unlock(&fimc->lock);
- fimc_md_graph_unlock(ve);
return ret;
}
@@ -1059,19 +1063,14 @@ static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
int ret;
fimc_md_graph_lock(&fimc->vid_cap.ve);
- mutex_lock(&fimc->lock);
/*
* The graph is walked within __fimc_capture_set_format() to set
* the format at subdevs thus the graph mutex needs to be held at
- * this point and acquired before the video mutex, to avoid AB-BA
- * deadlock when fimc_md_link_notify() is called by other thread.
- * Ideally the graph walking and setting format at the whole pipeline
- * should be removed from this driver and handled in userspace only.
+ * this point.
*/
ret = __fimc_capture_set_format(fimc, f);
fimc_md_graph_unlock(&fimc->vid_cap.ve);
- mutex_unlock(&fimc->lock);
return ret;
}
@@ -1790,12 +1789,6 @@ static int fimc_register_capture_device(struct fimc_dev *fimc,
ret = fimc_ctrls_create(ctx);
if (ret)
goto err_me_cleanup;
- /*
- * For proper order of acquiring/releasing the video
- * and the graph mutex.
- */
- v4l2_disable_ioctl_locking(vfd, VIDIOC_TRY_FMT);
- v4l2_disable_ioctl_locking(vfd, VIDIOC_S_FMT);
ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
if (ret)
diff --git a/drivers/media/platform/exynos4-is/fimc-core.h b/drivers/media/platform/exynos4-is/fimc-core.h
index 61c0c83cc5b7..e3da4ffd7a5e 100644
--- a/drivers/media/platform/exynos4-is/fimc-core.h
+++ b/drivers/media/platform/exynos4-is/fimc-core.h
@@ -298,7 +298,6 @@ struct fimc_m2m_device {
* @frame_count: the frame counter for statistics
* @reqbufs_count: the number of buffers requested in REQBUFS ioctl
* @input_index: input (camera sensor) index
- * @refcnt: driver's private reference counter
* @input: capture input type, grp_id of the attached subdev
* @user_subdev_api: true if subdevs are not configured by the host driver
* @inh_sensor_ctrls: a flag indicating v4l2 controls are inherited from
@@ -323,7 +322,6 @@ struct fimc_vid_cap {
unsigned int reqbufs_count;
bool streaming;
int input_index;
- int refcnt;
u32 input;
bool user_subdev_api;
bool inh_sensor_ctrls;
diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c
index 64198b84f673..0f372bfffaf0 100644
--- a/drivers/media/platform/exynos4-is/fimc-lite.c
+++ b/drivers/media/platform/exynos4-is/fimc-lite.c
@@ -461,8 +461,6 @@ static int fimc_lite_open(struct file *file)
struct media_entity *me = &fimc->ve.vdev.entity;
int ret;
- mutex_lock(&me->parent->graph_mutex);
-
mutex_lock(&fimc->lock);
if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) {
ret = -EBUSY;
@@ -482,11 +480,19 @@ static int fimc_lite_open(struct file *file)
atomic_read(&fimc->out_path) != FIMC_IO_DMA)
goto unlock;
+ mutex_lock(&me->parent->graph_mutex);
+
ret = fimc_pipeline_call(fimc, open, &fimc->pipeline,
me, true);
+
+ /* Mark video pipeline ending at this video node as in use. */
+ if (ret == 0)
+ me->use_count++;
+
+ mutex_unlock(&me->parent->graph_mutex);
+
if (!ret) {
fimc_lite_clear_event_counters(fimc);
- fimc->ref_count++;
goto unlock;
}
@@ -496,26 +502,28 @@ err_pm:
clear_bit(ST_FLITE_IN_USE, &fimc->state);
unlock:
mutex_unlock(&fimc->lock);
- mutex_unlock(&me->parent->graph_mutex);
return ret;
}
static int fimc_lite_release(struct file *file)
{
struct fimc_lite *fimc = video_drvdata(file);
+ struct media_entity *entity = &fimc->ve.vdev.entity;
mutex_lock(&fimc->lock);
if (v4l2_fh_is_singular_file(file) &&
atomic_read(&fimc->out_path) == FIMC_IO_DMA) {
if (fimc->streaming) {
- media_entity_pipeline_stop(&fimc->ve.vdev.entity);
+ media_entity_pipeline_stop(entity);
fimc->streaming = false;
}
clear_bit(ST_FLITE_IN_USE, &fimc->state);
fimc_lite_stop_capture(fimc, false);
fimc_pipeline_call(fimc, close, &fimc->pipeline);
- fimc->ref_count--;
+ mutex_lock(&entity->parent->graph_mutex);
+ entity->use_count--;
+ mutex_unlock(&entity->parent->graph_mutex);
}
vb2_fop_release(file);
@@ -954,8 +962,6 @@ static int fimc_lite_link_setup(struct media_entity *entity,
__func__, remote->entity->name, local->entity->name,
flags, fimc->source_subdev_grp_id);
- mutex_lock(&fimc->lock);
-
switch (local->index) {
case FLITE_SD_PAD_SINK:
if (remote_ent_type != MEDIA_ENT_T_V4L2_SUBDEV) {
@@ -997,7 +1003,6 @@ static int fimc_lite_link_setup(struct media_entity *entity,
}
mb();
- mutex_unlock(&fimc->lock);
return ret;
}
diff --git a/drivers/media/platform/exynos4-is/fimc-lite.h b/drivers/media/platform/exynos4-is/fimc-lite.h
index fa3886a297ba..25abba98d7e9 100644
--- a/drivers/media/platform/exynos4-is/fimc-lite.h
+++ b/drivers/media/platform/exynos4-is/fimc-lite.h
@@ -125,7 +125,6 @@ struct flite_buffer {
* @active_buf_count: number of video buffers scheduled in hardware
* @frame_count: the captured frames counter
* @reqbufs_count: the number of buffers requested with REQBUFS ioctl
- * @ref_count: driver's private reference counter
*/
struct fimc_lite {
struct platform_device *pdev;
@@ -163,7 +162,6 @@ struct fimc_lite {
struct vb2_queue vb_queue;
unsigned int frame_count;
unsigned int reqbufs_count;
- int ref_count;
struct fimc_lite_events events;
bool streaming;
diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index 7a562d289977..1b4bb25d0a55 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -1238,9 +1238,7 @@ static int fimc_md_link_notify(struct media_pad *source,
struct fimc_dev *fimc = NULL;
struct fimc_pipeline *pipeline;
struct v4l2_subdev *sd;
- struct mutex *lock;
int i, ret = 0;
- int ref_count;
if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
return 0;
@@ -1253,29 +1251,24 @@ static int fimc_md_link_notify(struct media_pad *source,
if (WARN_ON(fimc_lite == NULL))
return 0;
pipeline = &fimc_lite->pipeline;
- lock = &fimc_lite->lock;
break;
case GRP_ID_FIMC:
fimc = v4l2_get_subdevdata(sd);
if (WARN_ON(fimc == NULL))
return 0;
pipeline = &fimc->pipeline;
- lock = &fimc->lock;
break;
default:
return 0;
}
- mutex_lock(lock);
- ref_count = fimc ? fimc->vid_cap.refcnt : fimc_lite->ref_count;
-
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
- if (ref_count > 0) {
+ if (sink->entity->use_count > 0) {
ret = __fimc_pipeline_close(pipeline);
}
for (i = 0; i < IDX_MAX; i++)
pipeline->subdevs[i] = NULL;
- } else if (ref_count > 0) {
+ } else if (sink->entity->use_count > 0) {
/*
* Link activation. Enable power of pipeline elements only if
* the pipeline is already in use, i.e. its video node is open.
@@ -1285,7 +1278,6 @@ static int fimc_md_link_notify(struct media_pad *source,
source->entity, true);
}
- mutex_unlock(lock);
return ret ? -EPIPE : ret;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 03:49:07 +0000