/* trigger callback */
int snd_line6_capture_trigger(struct snd_line6_pcm *line6pcm, int cmd)
{
int err;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
#ifdef CONFIG_PM
case SNDRV_PCM_TRIGGER_RESUME:
#endif
err = line6_pcm_start(line6pcm, MASK_PCM_ALSA_CAPTURE);
if (err < 0)
return err;
break;
case SNDRV_PCM_TRIGGER_STOP:
#ifdef CONFIG_PM
case SNDRV_PCM_TRIGGER_SUSPEND:
#endif
err = line6_pcm_stop(line6pcm, MASK_PCM_ALSA_CAPTURE);
if (err < 0)
return err;
break;
default:
return -EINVAL;
}
return 0;
}
/*
"write" request on "impulse_volume" special file.
*/
static ssize_t pcm_set_impulse_volume(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct snd_line6_pcm *line6pcm = dev2pcm(dev);
int value = simple_strtoul(buf, NULL, 10);
line6pcm->impulse_volume = value;
if (value > 0)
line6_pcm_start(line6pcm, MASK_PCM_IMPULSE);
else
line6_pcm_stop(line6pcm, MASK_PCM_IMPULSE);
return count;
}
/* monitor put callback */
static int snd_toneport_monitor_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
if (ucontrol->value.integer.value[0] == line6pcm->volume_monitor)
return 0;
line6pcm->volume_monitor = ucontrol->value.integer.value[0];
if (line6pcm->volume_monitor > 0)
line6_pcm_start(line6pcm, MASK_PCM_MONITOR);
else
line6_pcm_stop(line6pcm, MASK_PCM_MONITOR);
return 1;
}
static void toneport_start_pcm(unsigned long arg)
{
struct usb_line6_toneport *toneport = (struct usb_line6_toneport *)arg;
struct usb_line6 *line6 = &toneport->line6;
line6_pcm_start(line6->line6pcm, MASK_PCM_MONITOR);
}