static int saudio_ctrl_thread(void *data)
{
int result = 0;
struct snd_saudio *saudio = (struct snd_saudio *)data;
ADEBUG();
result = saudio_snd_init_ipc(saudio);
if (result) {
printk(KERN_ERR "saudio:saudio_snd_init_ipc error %d\n",
result);
return -1;
}
while (!kthread_should_stop()) {
printk(KERN_INFO
"%s,saudio: waiting for modem boot handshake,dst %d,channel %d\n",
__func__, saudio->dst, saudio->channel);
saudio_snd_wait_modem_restart(saudio);
saudio->in_init = 1;
printk(KERN_INFO
"%s,saudio: modem boot and handshake ok,dst %d, channel %d\n",
__func__, saudio->dst, saudio->channel);
saudio_snd_card_free(saudio);
printk(KERN_INFO
"saudio_ctrl_thread flush work queue in dst %d, channel %d\n",
saudio->dst, saudio->channel);
flush_workqueue(saudio->queue);
saudio->in_init = 0;
printk(KERN_INFO
"saudio_ctrl_thread flush work queue out,dst %d, channel %d\n",
saudio->dst, saudio->channel);
if(saudio_snd_notify_modem_clear(saudio)) {
printk(KERN_ERR " saudio_ctrl_thread modem error again when notify modem clear \n");
continue;
}
saudio_clear_ctrl_cmd(saudio);
if(!saudio->card) {
result = saudio_snd_init_card(saudio);
printk(KERN_INFO
"saudio: snd card init reulst %d, dst %d, channel %d\n",
result, saudio->dst, saudio->channel);
}
mutex_lock(&saudio->mutex);
saudio->state = 1;
mutex_unlock(&saudio->mutex);
}
ETRACE("saudio_ctrl_thread create ok\n");
return 0;
}
static int snd_card_saudio_pcm_open(struct snd_pcm_substream *substream)
{
const struct snd_saudio *saudio = snd_pcm_substream_chip(substream);
const int stream_id = substream->pstr->stream;
const int dev = substream->pcm->device;
struct snd_pcm_runtime *runtime = substream->runtime;
struct saudio_stream *stream = NULL;
int result = 0;
struct saudio_dev_ctrl *dev_ctrl = NULL;
ADEBUG();
pr_info("%s IN, stream_id=%d\n", __func__, stream_id);
dev_ctrl = (struct saudio_dev_ctrl *)&(saudio->dev_ctrl[dev]);
stream = (struct saudio_stream *)&(dev_ctrl->stream[stream_id]);
stream->substream = substream;
stream->stream_id = stream_id;
stream->period = 0;
stream->periods_tosend = 0;
stream->periods_avail = 0;
stream->hwptr_done = 0;
stream->last_getblk_count = 0;
stream->last_elapsed_count = 0;
stream->blk_count = SAUDIO_STREAM_BLOCK_COUNT;
if (stream_id == SNDRV_PCM_STREAM_PLAYBACK) {
runtime->hw = snd_card_saudio_playback;
} else {
runtime->hw = snd_card_saudio_capture;
}
mutex_lock(&dev_ctrl->mutex);
saudio_clear_ctrl_cmd(saudio);
result = saudio_send_common_cmd(dev_ctrl->dst, dev_ctrl->channel,
SAUDIO_CMD_OPEN, stream_id,CMD_TIMEOUT);
if (result) {
ETRACE("saudio.c: snd_card_saudio_pcm_open: saudio_send_common_cmd result is %d", result);
saudio_snd_card_free(saudio);
mutex_unlock(&dev_ctrl->mutex);
return result;
}
pr_info("%s send cmd done\n", __func__);
result = saudio_wait_common_cmd(dev_ctrl->dst,
dev_ctrl->channel,
SAUDIO_CMD_OPEN_RET, 0,CMD_TIMEOUT);
if(result)
saudio_snd_card_free(saudio);
mutex_unlock(&dev_ctrl->mutex);
pr_info("%s OUT, result=%d\n", __func__, result);
return result;
}
