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[media] saa7134: share resource management between normal and empress nodes

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The empress video node can share resource management with the normal
video nodes, thus allowing for code sharing and making the empress node
non-exclusive.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Hans Verkuil
2013-12-14 08:28:27 -03:00
committed by Mauro Carvalho Chehab
parent b9f63b2595
commit ce791139ec
3 changed files with 62 additions and 101 deletions
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22
drivers/media/pci/saa7134/saa7134.h
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@@ -422,6 +422,7 @@ struct saa7134_board {
#define RESOURCE_OVERLAY 1
#define RESOURCE_VIDEO 2
#define RESOURCE_VBI 4
#define RESOURCE_EMPRESS 8
#define INTERLACE_AUTO 0
#define INTERLACE_ON 1
@@ -644,7 +645,6 @@ struct saa7134_dev {
struct video_device *empress_dev;
struct v4l2_subdev *empress_sd;
struct videobuf_queue empress_tsq;
atomic_t empress_users;
struct work_struct empress_workqueue;
int empress_started;
struct v4l2_ctrl_handler empress_ctrl_handler;
@@ -705,6 +705,16 @@ struct saa7134_dev {
_rc; \
})
static inline int res_check(struct saa7134_fh *fh, unsigned int bit)
{
return fh->resources & bit;
}
static inline int res_locked(struct saa7134_dev *dev, unsigned int bit)
{
return dev->resources & bit;
}
/* ----------------------------------------------------------- */
/* saa7134-core.c */
@@ -782,6 +792,16 @@ int saa7134_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f);
int saa7134_s_frequency(struct file *file, void *priv,
const struct v4l2_frequency *f);
int saa7134_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p);
int saa7134_querybuf(struct file *file, void *priv,
struct v4l2_buffer *b);
int saa7134_qbuf(struct file *file, void *priv, struct v4l2_buffer *b);
int saa7134_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b);
int saa7134_streamon(struct file *file, void *priv,
enum v4l2_buf_type type);
int saa7134_streamoff(struct file *file, void *priv,
enum v4l2_buf_type type);
int saa7134_videoport_init(struct saa7134_dev *dev);
void saa7134_set_tvnorm_hw(struct saa7134_dev *dev);