/*
* audio pcm capture open callback
*/
static int snd_cx23885_pcm_open(struct snd_pcm_substream *substream)
{
struct cx23885_audio_dev *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
if (!chip) {
printk(KERN_ERR "BUG: cx23885 can't find device struct."
" Can't proceed with open\n");
return -ENODEV;
}
err = snd_pcm_hw_constraint_pow2(runtime, 0,
SNDRV_PCM_HW_PARAM_PERIODS);
if (err < 0)
goto _error;
chip->substream = substream;
runtime->hw = snd_cx23885_digital_hw;
if (chip->dev->sram_channels[AUDIO_SRAM_CHANNEL].fifo_size !=
DEFAULT_FIFO_SIZE) {
unsigned int bpl = chip->dev->
sram_channels[AUDIO_SRAM_CHANNEL].fifo_size / 4;
bpl &= ~7; /* must be multiple of 8 */
runtime->hw.period_bytes_min = bpl;
runtime->hw.period_bytes_max = bpl;
}
return 0;
_error:
dprintk(1, "Error opening PCM!\n");
return err;
}
/* open callback */
static int snd_vortex_pcm_open(struct snd_pcm_substream *substream)
{
vortex_t *vortex = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
/* Force equal size periods */
if ((err =
snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
/* Avoid PAGE_SIZE boundary to fall inside of a period. */
if ((err =
snd_pcm_hw_constraint_pow2(runtime, 0,
SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0)
return err;
if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
#ifndef CHIP_AU8820
if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_A3D) {
runtime->hw = snd_vortex_playback_hw_a3d;
}
#endif
if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_SPDIF) {
runtime->hw = snd_vortex_playback_hw_spdif;
switch (vortex->spdif_sr) {
case 32000:
runtime->hw.rates = SNDRV_PCM_RATE_32000;
break;
case 44100:
runtime->hw.rates = SNDRV_PCM_RATE_44100;
break;
case 48000:
runtime->hw.rates = SNDRV_PCM_RATE_48000;
break;
}
}
if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB
|| VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_I2S)
runtime->hw = snd_vortex_playback_hw_adb;
#ifdef CHIP_AU8830
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB) {
runtime->hw.channels_max = 4;
snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
&hw_constraints_au8830_channels);
}
#endif
substream->runtime->private_data = NULL;
}
#ifndef CHIP_AU8810
else {
runtime->hw = snd_vortex_playback_hw_wt;
substream->runtime->private_data = NULL;
}
#endif
return 0;
}
static int smi2021_pcm_open(struct snd_pcm_substream *substream)
{
struct smi2021 *smi2021 = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int rc;
rc = snd_pcm_hw_constraint_pow2(runtime, 0,
SNDRV_PCM_HW_PARAM_PERIODS);
if (rc < 0)
return rc;
smi2021->pcm_substream = substream;
runtime->hw = smi2021_pcm_hw;
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
return 0;
}
/*
* audio pcm capture open callback
*/
static int snd_tm6000_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_tm6000_card *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
err = snd_pcm_hw_constraint_pow2(runtime, 0,
SNDRV_PCM_HW_PARAM_PERIODS);
if (err < 0)
goto _error;
chip->substream = substream;
runtime->hw = snd_tm6000_digital_hw;
return 0;
_error:
dprintk(1, "Error opening PCM!\n");
return err;
}