1 files changed, 29 insertions, 109 deletions

diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c
index b3f36515cbc1..05d59e03b1c5 100644
--- a/sound/soc/tegra/tegra_pcm.c
+++ b/sound/soc/tegra/tegra_pcm.c
@@ -48,6 +48,12 @@ int tegra_pcm_platform_register(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(tegra_pcm_platform_register);
 
+int devm_tegra_pcm_platform_register(struct device *dev)
+{
+	return devm_snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config, 0);
+}
+EXPORT_SYMBOL_GPL(devm_tegra_pcm_platform_register);
+
 int tegra_pcm_platform_register_with_chan_names(struct device *dev,
 				struct snd_dmaengine_pcm_config *config,
 				char *txdmachan, char *rxdmachan)
@@ -70,10 +76,10 @@ EXPORT_SYMBOL_GPL(tegra_pcm_platform_unregister);
 int tegra_pcm_open(struct snd_soc_component *component,
 		   struct snd_pcm_substream *substream)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_dmaengine_dai_dma_data *dmap;
 	struct dma_chan *chan;
-	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	int ret;
 
 	if (rtd->dai_link->no_pcm)
@@ -92,8 +98,8 @@ int tegra_pcm_open(struct snd_soc_component *component,
 		return ret;
 	}
 
-	chan = dma_request_slave_channel(cpu_dai->dev, dmap->chan_name);
-	if (!chan) {
+	chan = dma_request_chan(cpu_dai->dev, dmap->chan_name);
+	if (IS_ERR(chan)) {
 		dev_err(cpu_dai->dev,
 			"dmaengine request slave channel failed! (%s)\n",
 			dmap->chan_name);
@@ -111,6 +117,9 @@ int tegra_pcm_open(struct snd_soc_component *component,
 		return ret;
 	}
 
+	/* Set wait time to 500ms by default */
+	substream->wait_time = 500;
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra_pcm_open);
@@ -118,7 +127,7 @@ EXPORT_SYMBOL_GPL(tegra_pcm_open);
 int tegra_pcm_close(struct snd_soc_component *component,
 		    struct snd_pcm_substream *substream)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 
 	if (rtd->dai_link->no_pcm)
 		return 0;
@@ -133,7 +142,7 @@ int tegra_pcm_hw_params(struct snd_soc_component *component,
 			struct snd_pcm_substream *substream,
 			struct snd_pcm_hw_params *params)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_dmaengine_dai_dma_data *dmap;
 	struct dma_slave_config slave_config;
 	struct dma_chan *chan;
@@ -142,7 +151,7 @@ int tegra_pcm_hw_params(struct snd_soc_component *component,
 	if (rtd->dai_link->no_pcm)
 		return 0;
 
-	dmap = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream);
+	dmap = snd_soc_dai_get_dma_data(snd_soc_rtd_to_cpu(rtd, 0), substream);
 	if (!dmap)
 		return 0;
 
@@ -171,41 +180,10 @@ int tegra_pcm_hw_params(struct snd_soc_component *component,
 		return ret;
 	}
 
-	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
-
 	return 0;
 }
 EXPORT_SYMBOL_GPL(tegra_pcm_hw_params);
 
-int tegra_pcm_hw_free(struct snd_soc_component *component,
-		      struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-
-	if (rtd->dai_link->no_pcm)
-		return 0;
-
-	snd_pcm_set_runtime_buffer(substream, NULL);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(tegra_pcm_hw_free);
-
-int tegra_pcm_mmap(struct snd_soc_component *component,
-		   struct snd_pcm_substream *substream,
-		   struct vm_area_struct *vma)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct snd_pcm_runtime *runtime = substream->runtime;
-
-	if (rtd->dai_link->no_pcm)
-		return 0;
-
-	return dma_mmap_wc(substream->pcm->card->dev, vma, runtime->dma_area,
-			   runtime->dma_addr, runtime->dma_bytes);
-}
-EXPORT_SYMBOL_GPL(tegra_pcm_mmap);
-
 snd_pcm_uframes_t tegra_pcm_pointer(struct snd_soc_component *component,
 				    struct snd_pcm_substream *substream)
 {
@@ -213,92 +191,34 @@ snd_pcm_uframes_t tegra_pcm_pointer(struct snd_soc_component *component,
 }
 EXPORT_SYMBOL_GPL(tegra_pcm_pointer);
 
-static int tegra_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream,
-					    size_t size)
-{
-	struct snd_pcm_substream *substream = pcm->streams[stream].substream;
-	struct snd_dma_buffer *buf = &substream->dma_buffer;
-
-	buf->area = dma_alloc_wc(pcm->card->dev, size, &buf->addr, GFP_KERNEL);
-	if (!buf->area)
-		return -ENOMEM;
-
-	buf->private_data = NULL;
-	buf->dev.type = SNDRV_DMA_TYPE_DEV;
-	buf->dev.dev = pcm->card->dev;
-	buf->bytes = size;
-
-	return 0;
-}
-
-static void tegra_pcm_deallocate_dma_buffer(struct snd_pcm *pcm, int stream)
-{
-	struct snd_pcm_substream *substream;
-	struct snd_dma_buffer *buf;
-
-	substream = pcm->streams[stream].substream;
-	if (!substream)
-		return;
-
-	buf = &substream->dma_buffer;
-	if (!buf->area)
-		return;
-
-	dma_free_wc(pcm->card->dev, buf->bytes, buf->area, buf->addr);
-	buf->area = NULL;
-}
-
-static int tegra_pcm_dma_allocate(struct snd_soc_pcm_runtime *rtd,
+static int tegra_pcm_dma_allocate(struct device *dev, struct snd_soc_pcm_runtime *rtd,
 				  size_t size)
 {
-	struct snd_card *card = rtd->card->snd_card;
 	struct snd_pcm *pcm = rtd->pcm;
 	int ret;
 
-	ret = dma_set_mask(card->dev, DMA_BIT_MASK(32));
-	if (ret < 0)
-		return ret;
-
-	ret = dma_set_coherent_mask(card->dev, DMA_BIT_MASK(32));
+	ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
 	if (ret < 0)
 		return ret;
 
-	if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
-		ret = tegra_pcm_preallocate_dma_buffer(pcm,
-			SNDRV_PCM_STREAM_PLAYBACK, size);
-		if (ret)
-			goto err;
-	}
-
-	if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
-		ret = tegra_pcm_preallocate_dma_buffer(pcm,
-			SNDRV_PCM_STREAM_CAPTURE, size);
-		if (ret)
-			goto err_free_play;
-	}
-
-	return 0;
-
-err_free_play:
-	tegra_pcm_deallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_PLAYBACK);
-err:
-	return ret;
+	return snd_pcm_set_fixed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_WC, dev, size);
 }
 
 int tegra_pcm_construct(struct snd_soc_component *component,
 			struct snd_soc_pcm_runtime *rtd)
 {
-	return tegra_pcm_dma_allocate(rtd, tegra_pcm_hardware.buffer_bytes_max);
-}
-EXPORT_SYMBOL_GPL(tegra_pcm_construct);
+	struct device *dev = component->dev;
 
-void tegra_pcm_destruct(struct snd_soc_component *component,
-			struct snd_pcm *pcm)
-{
-	tegra_pcm_deallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_CAPTURE);
-	tegra_pcm_deallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_PLAYBACK);
+	/*
+	 * Fallback for backwards-compatibility with older device trees that
+	 * have the iommus property in the virtual, top-level "sound" node.
+	 */
+	if (!of_property_present(dev->of_node, "iommus"))
+		dev = rtd->card->snd_card->dev;
+
+	return tegra_pcm_dma_allocate(dev, rtd, tegra_pcm_hardware.buffer_bytes_max);
 }
-EXPORT_SYMBOL_GPL(tegra_pcm_destruct);
+EXPORT_SYMBOL_GPL(tegra_pcm_construct);
 
 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 MODULE_DESCRIPTION("Tegra PCM ASoC driver");