/*
* Handle open request for "/dev/radioX" device.
* Start with FM RX mode as default.
*/
static int fm_v4l2_fops_open(struct file *file)
{
int ret;
struct fmdev *fmdev = NULL;
/* Don't allow multiple open */
if (radio_disconnected) {
fmerr("FM device is already opened\n");
return -EBUSY;
}
fmdev = video_drvdata(file);
if (mutex_lock_interruptible(&fmdev->mutex))
return -ERESTARTSYS;
ret = fmc_prepare(fmdev);
if (ret < 0) {
fmerr("Unable to prepare FM CORE\n");
goto open_unlock;
}
fmdbg("Load FM RX firmware..\n");
ret = fmc_set_mode(fmdev, FM_MODE_RX);
if (ret < 0) {
fmerr("Unable to load FM RX firmware\n");
goto open_unlock;
}
radio_disconnected = 1;
open_unlock:
mutex_unlock(&fmdev->mutex);
return ret;
}
/*
* Handle open request for "/dev/radioX" device.
* Start with FM RX mode as default.
*/
static int fm_v4l2_fops_open(struct file *file)
{
int ret;
struct fmdev *fmdev = NULL;
/* Don't allow multiple open */
if (radio_disconnected) {
fmerr("FM device is already opened\n");
return -EBUSY;
}
fmdev = video_drvdata(file);
ret = fmc_prepare(fmdev);
if (ret < 0) {
fmerr("Unable to prepare FM CORE\n");
return ret;
}
fmdbg("Load FM RX firmware..\n");
ret = fmc_set_mode(fmdev, FM_MODE_RX);
if (ret < 0) {
fmerr("Unable to load FM RX firmware\n");
return ret;
}
radio_disconnected = 1;
return ret;
}
/*
* Handle open request for "/dev/radioX" device.
* Start with FM RX mode as default.
*/
static int fm_v4l2_fops_open(struct file *file)
{
int ret;
struct fmdev *fmdev = NULL;
/* Don't allow multiple open */
if (radio_disconnected) {
fmerr("FM device is already opened\n");
return -EBUSY;
}
fmdev = video_drvdata(file);
ret = fmc_prepare(fmdev);
if (ret < 0) {
fmerr("Unable to prepare FM CORE\n");
return ret;
}
fmdbg("Load FM RX firmware..\n");
ret = fmc_set_mode(fmdev, FM_MODE_RX);
if (ret < 0) {
fmerr("Unable to load FM RX firmware\n");
return ret;
}
radio_disconnected = 1;
/* Register sysfs entries */
ret = sysfs_create_group(&fmdev->radio_dev->dev.kobj, &v4l2_fm_attr_grp);
if (ret) {
pr_err("failed to create sysfs entries");
return ret;
}
return ret;
}
