soc dma : add audio dma timeout debuginterface

diff --git a/sound/soc/soc-dmaengine-pcm.c b/sound/soc/soc-dmaengine-pcm.c
old mode 100644 (file)
new mode 100755 (executable)
index aa924d9..d186e7c
--- a/sound/soc/soc-dmaengine-pcm.c
+++ b/sound/soc/soc-dmaengine-pcm.c
@@ -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;