dma soc audio : add support dma infiniteloop mode

[firefly-linux-kernel-4.4.55.git] / sound / soc / soc-dmaengine-pcm.c

diff --git a/sound/soc/soc-dmaengine-pcm.c b/sound/soc/soc-dmaengine-pcm.c
index d186e7cc28f25a71b1ad91defa177a6be28d8ff9..a6f73312e508d29ea848f947cf192e8906677640 100755 (executable)
--- a/sound/soc/soc-dmaengine-pcm.c
+++ b/sound/soc/soc-dmaengine-pcm.c
@@ -132,7 +132,7 @@ void snd_dmaengine_pcm_set_config_from_dai_data(
 }
 EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_set_config_from_dai_data);
 
-#if CONFIG_ARCH_ROCKCHIP
+#ifdef 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");
@@ -142,7 +142,7 @@ 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
+#ifdef CONFIG_ARCH_ROCKCHIP
        if(debug_audio_timeout){
                struct snd_pcm_runtime *runtime = substream->runtime;
                static ktime_t before = {0},after = {0};
@@ -180,10 +180,23 @@ static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream)
                flags |= DMA_PREP_INTERRUPT;
 
        prtd->pos = 0;
+#if CONFIG_ARCH_ROCKCHIP
+       //printk("soc dma buffersize = %d , periodsize=%d, periods=%d\n",
+       //      snd_pcm_lib_buffer_bytes(substream),
+       //      snd_pcm_lib_period_bytes(substream),
+       //      snd_pcm_lib_buffer_bytes(substream)/snd_pcm_lib_period_bytes(substream));
+       desc = dmaengine_prep_dma_infiniteloop(chan,
+               substream->runtime->dma_addr,
+               snd_pcm_lib_buffer_bytes(substream),
+               snd_pcm_lib_period_bytes(substream),
+               direction, flags,
+               snd_pcm_lib_buffer_bytes(substream)/snd_pcm_lib_period_bytes(substream));
+#else
        desc = dmaengine_prep_dma_cyclic(chan,
                substream->runtime->dma_addr,
                snd_pcm_lib_buffer_bytes(substream),
                snd_pcm_lib_period_bytes(substream), direction, flags);
+#endif
 
        if (!desc)
                return -ENOMEM;