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soc dma : add audio dma timeout debuginterface

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This commit is contained in:
qjb
2014-06-04 10:46:12 +08:00
parent 51d7acb84f
commit c519772e80
1 changed files with 22 additions and 0 deletions
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22
sound/soc/soc-dmaengine-pcm.c Normal file → Executable file
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@@ -132,11 +132,33 @@ void snd_dmaengine_pcm_set_config_from_dai_data(
}
EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_set_config_from_dai_data);
#if CONFIG_ARCH_ROCKCHIP
static int debug_audio_timeout = 0;
module_param(debug_audio_timeout, int, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
MODULE_PARM_DESC(debug_audio_timeout, "Debug interface Audio DMA buffdone time out");
#endif
static void dmaengine_pcm_dma_complete(void *arg)
{
struct snd_pcm_substream *substream = arg;
struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
#if CONFIG_ARCH_ROCKCHIP
if(debug_audio_timeout){
struct snd_pcm_runtime *runtime = substream->runtime;
static ktime_t before = {0},after = {0};
s64 t;
before = after;
after = ktime_get();
t = ktime_to_us(ktime_sub(after, before));
if(t > (snd_pcm_lib_period_bytes(substream)/4+32)*1000*1000/runtime->rate
&& t != ktime_to_us(after)) // (23220)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);
}
#endif
prtd->pos += snd_pcm_lib_period_bytes(substream);
if (prtd->pos >= snd_pcm_lib_buffer_bytes(substream))
prtd->pos = 0;