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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2014-03-09 20:57:53 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-05-25 11:32:08 -0300
commite8feb876d40f1428e40da33ee7dc2a7807cc145c (patch)
treee80555b7e6639ca5e989608ebad6e64a66baf769
parent988d54c4b9463bd14bb05e4b8c9a47d04a14d272 (diff)
[media] omap3isp: Move queue irqlock to isp_video structure
This prepares for the move to videobuf2. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
-rw-r--r--drivers/media/platform/omap3isp/isp.c6
-rw-r--r--drivers/media/platform/omap3isp/ispqueue.c13
-rw-r--r--drivers/media/platform/omap3isp/ispqueue.h5
-rw-r--r--drivers/media/platform/omap3isp/ispvideo.c21
-rw-r--r--drivers/media/platform/omap3isp/ispvideo.h1
5 files changed, 19 insertions, 27 deletions
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 5a4801b76282..2c7aa6720569 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -1399,14 +1399,14 @@ int omap3isp_module_sync_idle(struct media_entity *me, wait_queue_head_t *wait,
if (isp_pipeline_is_last(me)) {
struct isp_video *video = pipe->output;
unsigned long flags;
- spin_lock_irqsave(&video->queue->irqlock, flags);
+ spin_lock_irqsave(&video->irqlock, flags);
if (video->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_UNDERRUN) {
- spin_unlock_irqrestore(&video->queue->irqlock, flags);
+ spin_unlock_irqrestore(&video->irqlock, flags);
atomic_set(stopping, 0);
smp_mb();
return 0;
}
- spin_unlock_irqrestore(&video->queue->irqlock, flags);
+ spin_unlock_irqrestore(&video->irqlock, flags);
if (!wait_event_timeout(*wait, !atomic_read(stopping),
msecs_to_jiffies(1000))) {
atomic_set(stopping, 0);
diff --git a/drivers/media/platform/omap3isp/ispqueue.c b/drivers/media/platform/omap3isp/ispqueue.c
index dcd9446f01a5..77afb6370443 100644
--- a/drivers/media/platform/omap3isp/ispqueue.c
+++ b/drivers/media/platform/omap3isp/ispqueue.c
@@ -660,7 +660,6 @@ int omap3isp_video_queue_init(struct isp_video_queue *queue,
struct device *dev, unsigned int bufsize)
{
INIT_LIST_HEAD(&queue->queue);
- spin_lock_init(&queue->irqlock);
queue->type = type;
queue->ops = ops;
@@ -761,7 +760,6 @@ int omap3isp_video_queue_qbuf(struct isp_video_queue *queue,
struct v4l2_buffer *vbuf)
{
struct isp_video_buffer *buf;
- unsigned long flags;
int ret;
if (vbuf->type != queue->type)
@@ -801,11 +799,8 @@ int omap3isp_video_queue_qbuf(struct isp_video_queue *queue,
buf->state = ISP_BUF_STATE_QUEUED;
list_add_tail(&buf->stream, &queue->queue);
- if (queue->streaming) {
- spin_lock_irqsave(&queue->irqlock, flags);
+ if (queue->streaming)
queue->ops->buffer_queue(buf);
- spin_unlock_irqrestore(&queue->irqlock, flags);
- }
return 0;
}
@@ -862,17 +857,14 @@ int omap3isp_video_queue_dqbuf(struct isp_video_queue *queue,
int omap3isp_video_queue_streamon(struct isp_video_queue *queue)
{
struct isp_video_buffer *buf;
- unsigned long flags;
if (queue->streaming)
return 0;
queue->streaming = 1;
- spin_lock_irqsave(&queue->irqlock, flags);
list_for_each_entry(buf, &queue->queue, stream)
queue->ops->buffer_queue(buf);
- spin_unlock_irqrestore(&queue->irqlock, flags);
return 0;
}
@@ -890,7 +882,6 @@ int omap3isp_video_queue_streamon(struct isp_video_queue *queue)
void omap3isp_video_queue_streamoff(struct isp_video_queue *queue)
{
struct isp_video_buffer *buf;
- unsigned long flags;
unsigned int i;
if (!queue->streaming)
@@ -898,7 +889,6 @@ void omap3isp_video_queue_streamoff(struct isp_video_queue *queue)
queue->streaming = 0;
- spin_lock_irqsave(&queue->irqlock, flags);
for (i = 0; i < queue->count; ++i) {
buf = queue->buffers[i];
@@ -907,7 +897,6 @@ void omap3isp_video_queue_streamoff(struct isp_video_queue *queue)
buf->state = ISP_BUF_STATE_IDLE;
}
- spin_unlock_irqrestore(&queue->irqlock, flags);
INIT_LIST_HEAD(&queue->queue);
}
diff --git a/drivers/media/platform/omap3isp/ispqueue.h b/drivers/media/platform/omap3isp/ispqueue.h
index ecff055d7a5b..ecf330960ee5 100644
--- a/drivers/media/platform/omap3isp/ispqueue.h
+++ b/drivers/media/platform/omap3isp/ispqueue.h
@@ -114,8 +114,7 @@ struct isp_video_buffer {
* the userspace memory address for a USERPTR buffer, with the queue lock
* held. Drivers should perform device-specific buffer preparation (such as
* mapping the buffer memory in an IOMMU). This operation is optional.
- * @buffer_queue: Called when a buffer is being added to the queue with the
- * queue irqlock spinlock held.
+ * @buffer_queue: Called when a buffer is being added.
*/
struct isp_video_queue_operations {
void (*queue_prepare)(struct isp_video_queue *queue,
@@ -132,7 +131,6 @@ struct isp_video_queue_operations {
* @bufsize: Size of a driver-specific buffer object
* @count: Number of currently allocated buffers
* @buffers: ISP video buffers
- * @irqlock: Spinlock to protect access to the IRQ queue
* @streaming: Queue state, indicates whether the queue is streaming
* @queue: List of all queued buffers
*/
@@ -144,7 +142,6 @@ struct isp_video_queue {
unsigned int count;
struct isp_video_buffer *buffers[ISP_VIDEO_MAX_BUFFERS];
- spinlock_t irqlock;
unsigned int streaming:1;
diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c
index 12b0f8c82668..85338d33442f 100644
--- a/drivers/media/platform/omap3isp/ispvideo.c
+++ b/drivers/media/platform/omap3isp/ispvideo.c
@@ -381,15 +381,20 @@ static void isp_video_buffer_queue(struct isp_video_buffer *buf)
unsigned int empty;
unsigned int start;
+ spin_lock_irqsave(&video->irqlock, flags);
+
if (unlikely(video->error)) {
buf->state = ISP_BUF_STATE_ERROR;
wake_up(&buf->wait);
+ spin_unlock_irqrestore(&video->irqlock, flags);
return;
}
empty = list_empty(&video->dmaqueue);
list_add_tail(&buffer->buffer.irqlist, &video->dmaqueue);
+ spin_unlock_irqrestore(&video->irqlock, flags);
+
if (empty) {
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
state = ISP_PIPELINE_QUEUE_OUTPUT;
@@ -445,16 +450,16 @@ struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video)
unsigned long flags;
struct timespec ts;
- spin_lock_irqsave(&queue->irqlock, flags);
+ spin_lock_irqsave(&video->irqlock, flags);
if (WARN_ON(list_empty(&video->dmaqueue))) {
- spin_unlock_irqrestore(&queue->irqlock, flags);
+ spin_unlock_irqrestore(&video->irqlock, flags);
return NULL;
}
buf = list_first_entry(&video->dmaqueue, struct isp_video_buffer,
irqlist);
list_del(&buf->irqlist);
- spin_unlock_irqrestore(&queue->irqlock, flags);
+ spin_unlock_irqrestore(&video->irqlock, flags);
buf->vbuf.bytesused = vfh->format.fmt.pix.sizeimage;
@@ -520,10 +525,9 @@ struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video)
*/
void omap3isp_video_cancel_stream(struct isp_video *video)
{
- struct isp_video_queue *queue = video->queue;
unsigned long flags;
- spin_lock_irqsave(&queue->irqlock, flags);
+ spin_lock_irqsave(&video->irqlock, flags);
while (!list_empty(&video->dmaqueue)) {
struct isp_video_buffer *buf;
@@ -538,7 +542,7 @@ void omap3isp_video_cancel_stream(struct isp_video *video)
video->error = true;
- spin_unlock_irqrestore(&queue->irqlock, flags);
+ spin_unlock_irqrestore(&video->irqlock, flags);
}
/*
@@ -1039,10 +1043,10 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
ISP_PIPELINE_STREAM_CONTINUOUS);
if (ret < 0)
goto err_set_stream;
- spin_lock_irqsave(&video->queue->irqlock, flags);
+ spin_lock_irqsave(&video->irqlock, flags);
if (list_empty(&video->dmaqueue))
video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN;
- spin_unlock_irqrestore(&video->queue->irqlock, flags);
+ spin_unlock_irqrestore(&video->irqlock, flags);
}
video->streaming = 1;
@@ -1324,6 +1328,7 @@ int omap3isp_video_init(struct isp_video *video, const char *name)
spin_lock_init(&video->pipe.lock);
mutex_init(&video->stream_lock);
mutex_init(&video->queue_lock);
+ spin_lock_init(&video->irqlock);
/* Initialize the video device. */
if (video->ops == NULL)
diff --git a/drivers/media/platform/omap3isp/ispvideo.h b/drivers/media/platform/omap3isp/ispvideo.h
index 254e7d20f791..0fa098cc04bb 100644
--- a/drivers/media/platform/omap3isp/ispvideo.h
+++ b/drivers/media/platform/omap3isp/ispvideo.h
@@ -183,6 +183,7 @@ struct isp_video {
/* Video buffers queue */
struct isp_video_queue *queue;
struct mutex queue_lock; /* protects the queue */
+ spinlock_t irqlock; /* protects dmaqueue */
struct list_head dmaqueue;
enum isp_video_dmaqueue_flags dmaqueue_flags;

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