static int ts_open(struct file *file)
{
struct video_device *vdev = video_devdata(file);
struct saa7134_dev *dev = video_drvdata(file);
int err;
dprintk("open dev=%s\n", video_device_node_name(vdev));
err = -EBUSY;
if (!mutex_trylock(&dev->empress_tsq.vb_lock))
return err;
if (atomic_read(&dev->empress_users))
goto done;
/* Unmute audio */
saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
atomic_inc(&dev->empress_users);
file->private_data = dev;
err = 0;
done:
mutex_unlock(&dev->empress_tsq.vb_lock);
return err;
}
static int start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct saa7134_dmaqueue *dmaq = vq->drv_priv;
struct saa7134_dev *dev = dmaq->dev;
u32 leading_null_bytes = 0;
int err;
err = saa7134_ts_start_streaming(vq, count);
if (err)
return err;
/* If more cards start to need this, then this
should probably be added to the card definitions. */
switch (dev->board) {
case SAA7134_BOARD_BEHOLD_M6:
case SAA7134_BOARD_BEHOLD_M63:
case SAA7134_BOARD_BEHOLD_M6_EXTRA:
leading_null_bytes = 1;
break;
}
saa_call_all(dev, core, init, leading_null_bytes);
/* Unmute audio */
saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
dev->empress_started = 1;
return 0;
}
static int ts_open(struct file *file)
{
int minor = video_devdata(file)->minor;
struct saa7134_dev *dev;
int err;
lock_kernel();
list_for_each_entry(dev, &saa7134_devlist, devlist)
if (dev->empress_dev && dev->empress_dev->minor == minor)
goto found;
unlock_kernel();
return -ENODEV;
found:
dprintk("open minor=%d\n",minor);
err = -EBUSY;
if (!mutex_trylock(&dev->empress_tsq.vb_lock))
goto done;
if (atomic_read(&dev->empress_users))
goto done_up;
/* Unmute audio */
saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
atomic_inc(&dev->empress_users);
file->private_data = dev;
err = 0;
done_up:
mutex_unlock(&dev->empress_tsq.vb_lock);
done:
unlock_kernel();
return err;
}
static int ts_open(struct inode *inode, struct file *file)
{
int minor = iminor(inode);
struct saa7134_dev *dev;
int err;
list_for_each_entry(dev, &saa7134_devlist, devlist)
if (dev->empress_dev && dev->empress_dev->minor == minor)
goto found;
return -ENODEV;
found:
dprintk("open minor=%d\n",minor);
err = -EBUSY;
if (!mutex_trylock(&dev->empress_tsq.vb_lock))
goto done;
if (dev->empress_users)
goto done_up;
/* Unmute audio */
saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
dev->empress_users++;
file->private_data = dev;
err = 0;
done_up:
mutex_unlock(&dev->empress_tsq.vb_lock);
done:
return err;
}
static inline enum i2c_status i2c_get_status(struct saa7134_dev *dev)
{
enum i2c_status status;
status = saa_readb(SAA7134_I2C_ATTR_STATUS) & 0x0f;
i2c_dbg(2, "i2c stat <= %s\n", str_i2c_status[status]);
return status;
}
static inline enum i2c_status i2c_get_status(struct saa7134_dev *dev)
{
enum i2c_status status;
status = saa_readb(SAA7134_I2C_ATTR_STATUS) & 0x0f;
d2printk(KERN_DEBUG "%s: i2c stat <= %s\n",dev->name,
str_i2c_status[status]);
return status;
}
static void dump_statusreg(struct saa7134_dev *dev, int reg,
char *regname, char **bits)
{
int value,i;
value = saa_readb(reg);
printk(KERN_DEBUG "%s: %s:", dev->name, regname);
for (i = 7; i >= 0; i--) {
if (NULL == bits[i])
continue;
printk(" %s=%d", bits[i], (value & (1 << i)) ? 1 : 0);
}
printk("\n");
}
static inline int i2c_recv_byte(struct saa7134_dev *dev)
{
enum i2c_status status;
unsigned char data;
i2c_set_attr(dev,CONTINUE);
if (!i2c_is_busy_wait(dev))
return -EIO;
status = i2c_get_status(dev);
if (i2c_is_error(status))
return -EIO;
data = saa_readb(SAA7134_I2C_DATA);
d2printk(KERN_DEBUG "%s: i2c data <= 0x%x\n",dev->name,data);
return data;
}
static void stop_streaming(struct vb2_queue *vq)
{
struct saa7134_dmaqueue *dmaq = vq->drv_priv;
struct saa7134_dev *dev = dmaq->dev;
saa7134_ts_stop_streaming(vq);
saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
msleep(20);
saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
msleep(100);
/* Mute audio */
saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
dev->empress_started = 0;
}
static int ts_release(struct inode *inode, struct file *file)
{
struct saa7134_dev *dev = file->private_data;
videobuf_stop(&dev->empress_tsq);
videobuf_mmap_free(&dev->empress_tsq);
dev->empress_users--;
/* stop the encoder */
ts_reset_encoder(dev);
/* Mute audio */
saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
return 0;
}
