summaryrefslogtreecommitdiff
path: root/drivers/media/video/videobuf-core.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/videobuf-core.c')
-rw-r--r--drivers/media/video/videobuf-core.c116
1 files changed, 53 insertions, 63 deletions
diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c
index 471178e17017..63d7043502d6 100644
--- a/drivers/media/video/videobuf-core.c
+++ b/drivers/media/video/videobuf-core.c
@@ -24,10 +24,15 @@
#include <media/videobuf-core.h>
#define MAGIC_BUFFER 0x20070728
-#define MAGIC_CHECK(is, should) do { \
- if (unlikely((is) != (should))) { \
- printk(KERN_ERR "magic mismatch: %x (expected %x)\n", is, should); \
- BUG(); } } while (0)
+#define MAGIC_CHECK(is, should) \
+ do { \
+ if (unlikely((is) != (should))) { \
+ printk(KERN_ERR \
+ "magic mismatch: %x (expected %x)\n", \
+ is, should); \
+ BUG(); \
+ } \
+ } while (0)
static int debug;
module_param(debug, int, 0644);
@@ -36,9 +41,11 @@ MODULE_DESCRIPTION("helper module to manage video4linux buffers");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
MODULE_LICENSE("GPL");
-#define dprintk(level, fmt, arg...) do { \
- if (debug >= level) \
- printk(KERN_DEBUG "vbuf: " fmt , ## arg); } while (0)
+#define dprintk(level, fmt, arg...) \
+ do { \
+ if (debug >= level) \
+ printk(KERN_DEBUG "vbuf: " fmt, ## arg); \
+ } while (0)
/* --------------------------------------------------------------------- */
@@ -57,14 +64,14 @@ void *videobuf_alloc(struct videobuf_queue *q)
}
vb = q->int_ops->alloc(q->msize);
-
if (NULL != vb) {
init_waitqueue_head(&vb->done);
- vb->magic = MAGIC_BUFFER;
+ vb->magic = MAGIC_BUFFER;
}
return vb;
}
+EXPORT_SYMBOL_GPL(videobuf_alloc);
#define WAITON_CONDITION (vb->state != VIDEOBUF_ACTIVE &&\
vb->state != VIDEOBUF_QUEUED)
@@ -86,6 +93,7 @@ int videobuf_waiton(struct videobuf_buffer *vb, int non_blocking, int intr)
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_waiton);
int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb,
struct v4l2_framebuffer *fbuf)
@@ -95,9 +103,10 @@ int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb,
return CALL(q, iolock, q, vb, fbuf);
}
+EXPORT_SYMBOL_GPL(videobuf_iolock);
-void *videobuf_queue_to_vmalloc (struct videobuf_queue *q,
- struct videobuf_buffer *buf)
+void *videobuf_queue_to_vmalloc(struct videobuf_queue *q,
+ struct videobuf_buffer *buf)
{
if (q->int_ops->vmalloc)
return q->int_ops->vmalloc(buf);
@@ -146,6 +155,7 @@ void videobuf_queue_core_init(struct videobuf_queue *q,
init_waitqueue_head(&q->wait);
INIT_LIST_HEAD(&q->stream);
}
+EXPORT_SYMBOL_GPL(videobuf_queue_core_init);
/* Locking: Only usage in bttv unsafe find way to remove */
int videobuf_queue_is_busy(struct videobuf_queue *q)
@@ -184,6 +194,7 @@ int videobuf_queue_is_busy(struct videobuf_queue *q)
}
return 0;
}
+EXPORT_SYMBOL_GPL(videobuf_queue_is_busy);
/* Locking: Caller holds q->vb_lock */
void videobuf_queue_cancel(struct videobuf_queue *q)
@@ -216,6 +227,7 @@ void videobuf_queue_cancel(struct videobuf_queue *q)
}
INIT_LIST_HEAD(&q->stream);
}
+EXPORT_SYMBOL_GPL(videobuf_queue_cancel);
/* --------------------------------------------------------------------- */
@@ -237,6 +249,7 @@ enum v4l2_field videobuf_next_field(struct videobuf_queue *q)
}
return field;
}
+EXPORT_SYMBOL_GPL(videobuf_next_field);
/* Locking: Caller holds q->vb_lock */
static void videobuf_status(struct videobuf_queue *q, struct v4l2_buffer *b,
@@ -305,8 +318,7 @@ static int __videobuf_mmap_free(struct videobuf_queue *q)
MAGIC_CHECK(q->int_ops->magic, MAGIC_QTYPE_OPS);
-
- rc = CALL(q, mmap_free, q);
+ rc = CALL(q, mmap_free, q);
q->is_mmapped = 0;
@@ -332,6 +344,7 @@ int videobuf_mmap_free(struct videobuf_queue *q)
mutex_unlock(&q->vb_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_mmap_free);
/* Locking: Caller holds q->vb_lock */
int __videobuf_mmap_setup(struct videobuf_queue *q,
@@ -351,7 +364,7 @@ int __videobuf_mmap_setup(struct videobuf_queue *q,
for (i = 0; i < bcount; i++) {
q->bufs[i] = videobuf_alloc(q);
- if (q->bufs[i] == NULL)
+ if (NULL == q->bufs[i])
break;
q->bufs[i]->i = i;
@@ -372,11 +385,11 @@ int __videobuf_mmap_setup(struct videobuf_queue *q,
if (!i)
return -ENOMEM;
- dprintk(1, "mmap setup: %d buffers, %d bytes each\n",
- i, bsize);
+ dprintk(1, "mmap setup: %d buffers, %d bytes each\n", i, bsize);
return i;
}
+EXPORT_SYMBOL_GPL(__videobuf_mmap_setup);
int videobuf_mmap_setup(struct videobuf_queue *q,
unsigned int bcount, unsigned int bsize,
@@ -388,6 +401,7 @@ int videobuf_mmap_setup(struct videobuf_queue *q,
mutex_unlock(&q->vb_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_mmap_setup);
int videobuf_reqbufs(struct videobuf_queue *q,
struct v4l2_requestbuffers *req)
@@ -432,7 +446,7 @@ int videobuf_reqbufs(struct videobuf_queue *q,
q->ops->buf_setup(q, &count, &size);
dprintk(1, "reqbufs: bufs=%d, size=0x%x [%u pages total]\n",
count, size,
- (unsigned int)((count*PAGE_ALIGN(size))>>PAGE_SHIFT) );
+ (unsigned int)((count * PAGE_ALIGN(size)) >> PAGE_SHIFT));
retval = __videobuf_mmap_setup(q, count, size, req->memory);
if (retval < 0) {
@@ -447,6 +461,7 @@ int videobuf_reqbufs(struct videobuf_queue *q,
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_reqbufs);
int videobuf_querybuf(struct videobuf_queue *q, struct v4l2_buffer *b)
{
@@ -473,9 +488,9 @@ done:
mutex_unlock(&q->vb_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(videobuf_querybuf);
-int videobuf_qbuf(struct videobuf_queue *q,
- struct v4l2_buffer *b)
+int videobuf_qbuf(struct videobuf_queue *q, struct v4l2_buffer *b)
{
struct videobuf_buffer *buf;
enum v4l2_field field;
@@ -571,7 +586,7 @@ int videobuf_qbuf(struct videobuf_queue *q,
retval = 0;
wake_up_interruptible_sync(&q->wait);
- done:
+done:
mutex_unlock(&q->vb_lock);
if (b->memory == V4L2_MEMORY_MMAP)
@@ -579,7 +594,7 @@ int videobuf_qbuf(struct videobuf_queue *q,
return retval;
}
-
+EXPORT_SYMBOL_GPL(videobuf_qbuf);
/* Locking: Caller holds q->vb_lock */
static int stream_next_buffer_check_queue(struct videobuf_queue *q, int noblock)
@@ -624,7 +639,6 @@ done:
return retval;
}
-
/* Locking: Caller holds q->vb_lock */
static int stream_next_buffer(struct videobuf_queue *q,
struct videobuf_buffer **vb, int nonblocking)
@@ -647,7 +661,7 @@ done:
}
int videobuf_dqbuf(struct videobuf_queue *q,
- struct v4l2_buffer *b, int nonblocking)
+ struct v4l2_buffer *b, int nonblocking)
{
struct videobuf_buffer *buf = NULL;
int retval;
@@ -682,11 +696,11 @@ int videobuf_dqbuf(struct videobuf_queue *q,
list_del(&buf->stream);
memset(b, 0, sizeof(*b));
videobuf_status(q, b, buf, q->type);
-
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_dqbuf);
int videobuf_streamon(struct videobuf_queue *q)
{
@@ -709,10 +723,11 @@ int videobuf_streamon(struct videobuf_queue *q)
spin_unlock_irqrestore(q->irqlock, flags);
wake_up_interruptible_sync(&q->wait);
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_streamon);
/* Locking: Caller holds q->vb_lock */
static int __videobuf_streamoff(struct videobuf_queue *q)
@@ -735,6 +750,7 @@ int videobuf_streamoff(struct videobuf_queue *q)
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_streamoff);
/* Locking: Caller holds q->vb_lock */
static ssize_t videobuf_read_zerocopy(struct videobuf_queue *q,
@@ -774,7 +790,7 @@ static ssize_t videobuf_read_zerocopy(struct videobuf_queue *q,
retval = q->read_buf->size;
}
- done:
+done:
/* cleanup */
q->ops->buf_release(q, q->read_buf);
kfree(q->read_buf);
@@ -862,10 +878,11 @@ ssize_t videobuf_read_one(struct videobuf_queue *q,
q->read_buf = NULL;
}
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_read_one);
/* Locking: Caller holds q->vb_lock */
static int __videobuf_read_start(struct videobuf_queue *q)
@@ -917,7 +934,6 @@ static void __videobuf_read_stop(struct videobuf_queue *q)
q->bufs[i] = NULL;
}
q->read_buf = NULL;
-
}
int videobuf_read_start(struct videobuf_queue *q)
@@ -930,6 +946,7 @@ int videobuf_read_start(struct videobuf_queue *q)
return rc;
}
+EXPORT_SYMBOL_GPL(videobuf_read_start);
void videobuf_read_stop(struct videobuf_queue *q)
{
@@ -937,6 +954,7 @@ void videobuf_read_stop(struct videobuf_queue *q)
__videobuf_read_stop(q);
mutex_unlock(&q->vb_lock);
}
+EXPORT_SYMBOL_GPL(videobuf_read_stop);
void videobuf_stop(struct videobuf_queue *q)
{
@@ -950,7 +968,7 @@ void videobuf_stop(struct videobuf_queue *q)
mutex_unlock(&q->vb_lock);
}
-
+EXPORT_SYMBOL_GPL(videobuf_stop);
ssize_t videobuf_read_stream(struct videobuf_queue *q,
char __user *data, size_t count, loff_t *ppos,
@@ -1019,10 +1037,11 @@ ssize_t videobuf_read_stream(struct videobuf_queue *q,
break;
}
- done:
+done:
mutex_unlock(&q->vb_lock);
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_read_stream);
unsigned int videobuf_poll_stream(struct file *file,
struct videobuf_queue *q,
@@ -1062,9 +1081,9 @@ unsigned int videobuf_poll_stream(struct file *file,
mutex_unlock(&q->vb_lock);
return rc;
}
+EXPORT_SYMBOL_GPL(videobuf_poll_stream);
-int videobuf_mmap_mapper(struct videobuf_queue *q,
- struct vm_area_struct *vma)
+int videobuf_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma)
{
int retval;
@@ -1077,6 +1096,7 @@ int videobuf_mmap_mapper(struct videobuf_queue *q,
return retval;
}
+EXPORT_SYMBOL_GPL(videobuf_mmap_mapper);
#ifdef CONFIG_VIDEO_V4L1_COMPAT
int videobuf_cgmbuf(struct videobuf_queue *q,
@@ -1107,33 +1127,3 @@ int videobuf_cgmbuf(struct videobuf_queue *q,
EXPORT_SYMBOL_GPL(videobuf_cgmbuf);
#endif
-/* --------------------------------------------------------------------- */
-
-EXPORT_SYMBOL_GPL(videobuf_waiton);
-EXPORT_SYMBOL_GPL(videobuf_iolock);
-
-EXPORT_SYMBOL_GPL(videobuf_alloc);
-
-EXPORT_SYMBOL_GPL(videobuf_queue_core_init);
-EXPORT_SYMBOL_GPL(videobuf_queue_cancel);
-EXPORT_SYMBOL_GPL(videobuf_queue_is_busy);
-
-EXPORT_SYMBOL_GPL(videobuf_next_field);
-EXPORT_SYMBOL_GPL(videobuf_reqbufs);
-EXPORT_SYMBOL_GPL(videobuf_querybuf);
-EXPORT_SYMBOL_GPL(videobuf_qbuf);
-EXPORT_SYMBOL_GPL(videobuf_dqbuf);
-EXPORT_SYMBOL_GPL(videobuf_streamon);
-EXPORT_SYMBOL_GPL(videobuf_streamoff);
-
-EXPORT_SYMBOL_GPL(videobuf_read_start);
-EXPORT_SYMBOL_GPL(videobuf_read_stop);
-EXPORT_SYMBOL_GPL(videobuf_stop);
-EXPORT_SYMBOL_GPL(videobuf_read_stream);
-EXPORT_SYMBOL_GPL(videobuf_read_one);
-EXPORT_SYMBOL_GPL(videobuf_poll_stream);
-
-EXPORT_SYMBOL_GPL(__videobuf_mmap_setup);
-EXPORT_SYMBOL_GPL(videobuf_mmap_setup);
-EXPORT_SYMBOL_GPL(videobuf_mmap_free);
-EXPORT_SYMBOL_GPL(videobuf_mmap_mapper);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-19 03:23:15 +0300