static int msm_pcm_playback_copy(struct snd_pcm_substream *substream, int a,
snd_pcm_uframes_t hwoff, void __user *buf, snd_pcm_uframes_t frames)
{
int rc = 1;
int fbytes = 0;
struct snd_pcm_runtime *runtime = substream->runtime;
struct msm_audio *prtd = runtime->private_data;
fbytes = frames_to_bytes(runtime, frames);
rc = alsa_send_buffer(prtd, buf, fbytes, NULL);
++copy_count;
prtd->pcm_buf_pos += fbytes;
if (copy_count == 1) {
mutex_lock(&the_locks.lock);
alsa_audio_configure(prtd);
mutex_unlock(&the_locks.lock);
}
if ((prtd->running) && (msm_vol_ctl.update)) {
rc = msm_audio_volume_update(PCMPLAYBACK_DECODERID,
msm_vol_ctl.volume, msm_vol_ctl.pan);
msm_vol_ctl.update = 0;
}
return rc;
}
static int msm_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct msm_audio *prtd;
int ret = 0;
prtd = kzalloc(sizeof(struct msm_audio), GFP_KERNEL);
if (prtd == NULL) {
ret = -ENOMEM;
return ret;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
runtime->hw = msm_pcm_playback_hardware;
prtd->dir = SNDRV_PCM_STREAM_PLAYBACK;
prtd->playback_substream = substream;
prtd->eos_ack = 0;
ret = msm_audio_volume_update(PCMPLAYBACK_DECODERID,
msm_vol_ctl.volume, msm_vol_ctl.pan);
} else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
runtime->hw = msm_pcm_capture_hardware;
prtd->dir = SNDRV_PCM_STREAM_CAPTURE;
prtd->capture_substream = substream;
}
ret = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&constraints_sample_rates);
if (ret < 0)
goto out;
/* Ensure that buffer size is a multiple of period size */
ret = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (ret < 0)
goto out;
prtd->ops = &snd_msm_audio_ops;
prtd->out[0].used = BUF_INVALID_LEN;
prtd->out_head = 1; /* point to second buffer on startup */
runtime->private_data = prtd;
ret = alsa_adsp_configure(prtd);
if (ret)
goto out;
copy_count = 0;
return 0;
out:
kfree(prtd);
return ret;
}
static int snd_msm_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int change;
int volume;
volume = ucontrol->value.integer.value[0];
spin_lock_irq(&the_locks.mixer_lock);
change = (msm_vol_ctl.volume != volume);
if (change) {
msm_vol_ctl.volume = volume;
msm_audio_volume_update(PCMPLAYBACK_DECODERID,
msm_vol_ctl.volume, msm_vol_ctl.pan);
}
spin_unlock_irq(&the_locks.mixer_lock);
return 0;
}
