/* si4713_g_frequency - get tuner or modulator radio frequency */
static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
{
struct si4713_device *sdev = to_si4713_device(sd);
int rval = 0;
f->type = V4L2_TUNER_RADIO;
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
u16 freq;
u8 p, a, n;
rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n);
if (rval < 0)
goto unlock;
sdev->frequency = freq;
}
f->frequency = si4713_to_v4l2(sdev->frequency);
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
static int si4713_update_tune_status(struct si4713_device *sdev)
{
int rval;
u16 f = 0;
u8 p = 0, a = 0, n = 0;
rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n);
if (rval < 0)
goto exit;
sdev->power_level = p;
sdev->antenna_capacitor = a;
sdev->tune_rnl = n;
exit:
return rval;
}
/*
* si4713_update_tune_status - update properties from tx_tune_status
* command. Must be called with sdev->mutex held.
* @sdev: si4713_device structure for the device we are communicating
*/
static int si4713_update_tune_status(struct si4713_device *sdev)
{
int rval;
u16 f = 0;
u8 p = 0, a = 0, n = 0;
rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n);
if (rval < 0)
goto exit;
/* TODO: check that power_level and antenna_capacitor really are not
changed by the hardware. If they are, then these controls should become
volatiles.
sdev->power_level = p;
sdev->antenna_capacitor = a;*/
sdev->tune_rnl = n;
exit:
return rval;
}
/* si4713_g_frequency - get tuner or modulator radio frequency */
static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
{
struct si4713_device *sdev = to_si4713_device(sd);
int rval = 0;
if (f->tuner)
return -EINVAL;
if (sdev->power_state) {
u16 freq;
u8 p, a, n;
rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n);
if (rval < 0)
return rval;
sdev->frequency = freq;
}
f->frequency = si4713_to_v4l2(sdev->frequency);
return rval;
}