/* si4713_ioctl - deal with private ioctls (only rnl for now) */
static long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct si4713_device *sdev = to_si4713_device(sd);
struct si4713_rnl *rnl = arg;
u16 frequency;
int rval = 0;
if (!arg)
return -EINVAL;
switch (cmd) {
case SI4713_IOC_MEASURE_RNL:
frequency = v4l2_to_si4713(rnl->frequency);
if (sdev->power_state) {
/* Set desired measurement frequency */
rval = si4713_tx_tune_measure(sdev, frequency, 0);
if (rval < 0)
return rval;
/* get results from tune status */
rval = si4713_update_tune_status(sdev);
if (rval < 0)
return rval;
}
rnl->rnl = sdev->tune_rnl;
break;
default:
/* nothing */
rval = -ENOIOCTLCMD;
}
return rval;
}
/* properties which use tx_tune_status */
static int si4713_read_econtrol_tune(struct si4713_device *sdev,
struct v4l2_ext_control *control)
{
s32 rval = 0;
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
rval = si4713_update_tune_status(sdev);
if (rval < 0)
goto unlock;
}
switch (control->id) {
case V4L2_CID_TUNE_POWER_LEVEL:
control->value = sdev->power_level;
break;
case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
control->value = sdev->antenna_capacitor;
break;
default:
rval = -EINVAL;
};
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}