void rk29_audio_buffdone(void *dev_id, int size,
enum rk29_dma_buffresult result)
{
struct snd_pcm_substream *substream = dev_id;
struct rockchip_runtime_data *prtd;
#if PCM_DMA_DEBUG
static ktime_t before = {0},after = {0};
s64 t;
before = after;
after = ktime_get();
t = ktime_to_us(ktime_sub(after, before));
if(result == RK29_RES_OK)
{
if(t > 23220+73 && t != ktime_to_us(after)) // 4096/4/44100 + 32/44100
{
printk(KERN_DEBUG "Time out:: Audio DMA buffdone time out!!! the time = %lld!\n", t);
}
printk(KERN_DEBUG "audio DMA callback time = %lld\n", t);
}
// printk(KERN_DEBUG "a %d %d\n", size, result);
#endif
DBG("Enter::%s----%d\n",__FUNCTION__,__LINE__);
if (!substream){
DBG("substream is free\n");
return;
}
if (!substream->runtime){
DBG("substream->runtime is free\n");
return;
}
switch(result)
{
case RK29_RES_OK:
break;
case RK29_RES_ERR:
case RK29_RES_ABORT:
DBG("Enter::%s dma about or error result = %d \n",__FUNCTION__,result);
return;
}
prtd = substream->runtime->private_data;
// if(prtd->params->channel == 2)
DBG("Enter::%s----%d channel =%d \n",__FUNCTION__,__LINE__);
if(!(prtd->state & ST_RUNNING))
return;
if (substream){
snd_pcm_period_elapsed(substream);
}
spin_lock(&prtd->lock);
prtd->dma_loaded--;
if (prtd->state & ST_RUNNING) {
rockchip_pcm_enqueue(substream);
}
spin_unlock(&prtd->lock);
}
static int rockchip_pcm_prepare(struct snd_pcm_substream *substream)
{
struct rockchip_runtime_data *prtd = substream->runtime->private_data;
int ret = 0;
DBG("Enter::%s----%d\n",__FUNCTION__,__LINE__);
/* return if this is a bufferless transfer e.g.
* codec <--> BT codec or GSM modem -- lg FIXME */
if (!prtd->params)
return 0;
if(substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
ret = rk29_dma_devconfig(prtd->params->channel,
RK29_DMASRC_MEM,
prtd->params->dma_addr);
}else{
ret = rk29_dma_devconfig(prtd->params->channel,
RK29_DMASRC_HW,
prtd->params->dma_addr);
}
DBG("Enter::%s, %d, ret=%d, Channel=%d, Addr=0x%X\n", __FUNCTION__, __LINE__, ret, prtd->params->channel, prtd->params->dma_addr);
ret = rk29_dma_config(prtd->params->channel,
prtd->params->dma_size, 1);
prtd->params->flag = 1;
DBG("Enter:%s, %d, ret = %d, Channel=%d, Size=%d\n",
__FUNCTION__, __LINE__, ret, prtd->params->channel,
prtd->params->dma_size);
ret= rk29_dma_ctrl(prtd->params->channel, RK29_DMAOP_FLUSH);
DBG("Enter:%s, %d, ret = %d, Channel=%d\n",
__FUNCTION__, __LINE__, ret, prtd->params->channel);
prtd->dma_loaded = 0;
prtd->dma_pos = prtd->dma_start;
/* enqueue dma buffers */
rockchip_pcm_enqueue(substream);
return ret;
}
