struct fmi_device
{
+ unsigned long in_use;
int port;
int curvol; /* 1 or 0 */
unsigned long curfreq; /* freq in kHz */
struct v4l2_tuner *v)
{
int mult;
- struct video_device *dev = video_devdata(file);
- struct fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
if (v->index > 0)
return -EINVAL;
static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct video_device *dev = video_devdata(file);
- struct fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
if (!(fmi->flags & V4L2_TUNER_CAP_LOW))
f->frequency *= 1000;
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct video_device *dev = video_devdata(file);
- struct fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
f->frequency = fmi->curfreq;
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct video_device *dev = video_devdata(file);
- struct fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct video_device *dev = video_devdata(file);
- struct fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
static struct fmi_device fmi_unit;
+static int fmi_exclusive_open(struct inode *inode, struct file *file)
+{
+ return test_and_set_bit(0, &fmi_unit.in_use) ? -EBUSY : 0;
+}
+
+static int fmi_exclusive_release(struct inode *inode, struct file *file)
+{
+ clear_bit(0, &fmi_unit.in_use);
+ return 0;
+}
+
static const struct file_operations fmi_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = fmi_exclusive_open,
+ .release = fmi_exclusive_release,
.ioctl = video_ioctl2,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,
.name = "SF16FMx radio",
.fops = &fmi_fops,
.ioctl_ops = &fmi_ioctl_ops,
+ .release = video_device_release_empty,
};
/* ladis: this is my card. does any other types exist? */
fmi_unit.curvol = 0;
fmi_unit.curfreq = 0;
fmi_unit.flags = V4L2_TUNER_CAP_LOW;
- fmi_radio.priv = &fmi_unit;
+ video_set_drvdata(&fmi_radio, &fmi_unit);
mutex_init(&lock);