/* 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_acquire(line6pcm,
LINE6_BIT_PCM_ALSA_CAPTURE_STREAM);
if (err < 0)
return err;
break;
case SNDRV_PCM_TRIGGER_STOP:
#ifdef CONFIG_PM
case SNDRV_PCM_TRIGGER_SUSPEND:
#endif
err = line6_pcm_release(line6pcm,
LINE6_BIT_PCM_ALSA_CAPTURE_STREAM);
if (err < 0)
return err;
break;
default:
return -EINVAL;
}
return 0;
}
/* hw_params capture callback */
static int snd_line6_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
int ret;
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
/* -- Florian Demski [FD] */
/* don't ask me why, but this fixes the bug on my machine */
if (line6pcm == NULL) {
if (substream->pcm == NULL)
return -ENOMEM;
if (substream->pcm->private_data == NULL)
return -ENOMEM;
substream->private_data = substream->pcm->private_data;
line6pcm = snd_pcm_substream_chip(substream);
}
/* -- [FD] end */
ret = line6_pcm_acquire(line6pcm, LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER);
if (ret < 0)
return ret;
ret = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (ret < 0) {
line6_pcm_release(line6pcm, LINE6_BIT_PCM_ALSA_CAPTURE_BUFFER);
return ret;
}
line6pcm->period_in = params_period_bytes(hw_params);
return 0;
}
/* 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_acquire(line6pcm, LINE6_BITS_PCM_MONITOR);
else
line6_pcm_release(line6pcm, LINE6_BITS_PCM_MONITOR);
return 1;
}
/* open capture callback */
static int snd_line6_capture_open(struct snd_pcm_substream *substream)
{
int err;
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
err = snd_pcm_hw_constraint_ratdens(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&line6pcm->properties->rates);
if (err < 0)
return err;
line6_pcm_acquire(line6pcm, LINE6_STREAM_CAPTURE_HELPER, false);
runtime->hw = line6pcm->properties->capture_hw;
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;
int ret;
ret = kstrtoint(buf, 10, &value);
if (ret < 0)
return ret;
line6pcm->impulse_volume = value;
if (value > 0)
line6_pcm_acquire(line6pcm, LINE6_BITS_PCM_IMPULSE);
else
line6_pcm_release(line6pcm, LINE6_BITS_PCM_IMPULSE);
return count;
}
static int snd_line6_impulse_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
int value = ucontrol->value.integer.value[0];
int err;
if (line6pcm->impulse_volume == value)
return 0;
line6pcm->impulse_volume = value;
if (value > 0) {
err = line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE, true);
if (err < 0) {
line6pcm->impulse_volume = 0;
return err;
}
} else {
line6_pcm_release(line6pcm, LINE6_STREAM_IMPULSE);
}
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_acquire(line6->line6pcm, LINE6_BITS_PCM_MONITOR);
}
