1 files changed, 14 insertions, 173 deletions

diff --git a/sound/soc/spear/spear_pcm.c b/sound/soc/spear/spear_pcm.c
index 9b76cc5a114..0e5a8f35d0a 100644
--- a/sound/soc/spear/spear_pcm.c
+++ b/sound/soc/spear/spear_pcm.c
@@ -13,19 +13,14 @@
 
 #include <linux/module.h>
 #include <linux/dmaengine.h>
-#include <linux/dma-mapping.h>
-#include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-#include <sound/core.h>
 #include <sound/dmaengine_pcm.h>
 #include <sound/pcm.h>
-#include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/spear_dma.h>
+#include "spear_pcm.h"
 
-struct snd_pcm_hardware spear_pcm_hardware = {
+static const struct snd_pcm_hardware spear_pcm_hardware = {
 	.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
 		 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
 		 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
@@ -37,178 +32,24 @@ struct snd_pcm_hardware spear_pcm_hardware = {
 	.fifo_size = 0, /* fifo size in bytes */
 };
 
-static int spear_pcm_hw_params(struct snd_pcm_substream *substream,
-		struct snd_pcm_hw_params *params)
-{
-	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
-
-	return 0;
-}
-
-static int spear_pcm_hw_free(struct snd_pcm_substream *substream)
-{
-	snd_pcm_set_runtime_buffer(substream, NULL);
-
-	return 0;
-}
-
-static int spear_pcm_open(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-
-	struct spear_dma_data *dma_data = (struct spear_dma_data *)
-		snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-	int ret;
-
-	ret = snd_soc_set_runtime_hwparams(substream, &spear_pcm_hardware);
-	if (ret)
-		return ret;
-
-	ret = snd_dmaengine_pcm_open(substream, dma_data->filter, dma_data);
-	if (ret)
-		return ret;
-
-	snd_dmaengine_pcm_set_data(substream, dma_data);
-
-	return 0;
-}
-
-static int spear_pcm_close(struct snd_pcm_substream *substream)
-{
-
-	snd_dmaengine_pcm_close(substream);
-
-	return 0;
-}
-
-static int spear_pcm_mmap(struct snd_pcm_substream *substream,
-		struct vm_area_struct *vma)
-{
-	struct snd_pcm_runtime *runtime = substream->runtime;
-
-	return dma_mmap_writecombine(substream->pcm->card->dev, vma,
-			runtime->dma_area, runtime->dma_addr,
-			runtime->dma_bytes);
-}
-
-static struct snd_pcm_ops spear_pcm_ops = {
-	.open		= spear_pcm_open,
-	.close		= spear_pcm_close,
-	.ioctl		= snd_pcm_lib_ioctl,
-	.hw_params	= spear_pcm_hw_params,
-	.hw_free	= spear_pcm_hw_free,
-	.trigger	= snd_dmaengine_pcm_trigger,
-	.pointer	= snd_dmaengine_pcm_pointer,
-	.mmap		= spear_pcm_mmap,
+static const struct snd_dmaengine_pcm_config spear_dmaengine_pcm_config = {
+	.pcm_hardware = &spear_pcm_hardware,
+	.prealloc_buffer_size = 16 * 1024,
 };
 
-static int
-spear_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream,
-		size_t size)
+int devm_spear_pcm_platform_register(struct device *dev,
+			struct snd_dmaengine_pcm_config *config,
+			bool (*filter)(struct dma_chan *chan, void *slave))
 {
-	struct snd_pcm_substream *substream = pcm->streams[stream].substream;
-	struct snd_dma_buffer *buf = &substream->dma_buffer;
-
-	buf->dev.type = SNDRV_DMA_TYPE_DEV;
-	buf->dev.dev = pcm->card->dev;
-	buf->private_data = NULL;
-
-	buf->area = dma_alloc_writecombine(pcm->card->dev, size,
-			&buf->addr, GFP_KERNEL);
-	if (!buf->area)
-		return -ENOMEM;
-
-	dev_info(buf->dev.dev,
-			" preallocate_dma_buffer: area=%p, addr=%p, size=%d\n",
-			(void *)buf->area, (void *)buf->addr, size);
+	*config = spear_dmaengine_pcm_config;
+	config->compat_filter_fn = filter;
 
-	buf->bytes = size;
-	return 0;
+	return snd_dmaengine_pcm_register(dev, config,
+		SND_DMAENGINE_PCM_FLAG_NO_DT |
+		SND_DMAENGINE_PCM_FLAG_COMPAT);
 }
-
-static void spear_pcm_free(struct snd_pcm *pcm)
-{
-	struct snd_pcm_substream *substream;
-	struct snd_dma_buffer *buf;
-	int stream;
-
-	for (stream = 0; stream < 2; stream++) {
-		substream = pcm->streams[stream].substream;
-		if (!substream)
-			continue;
-
-		buf = &substream->dma_buffer;
-		if (!buf || !buf->area)
-			continue;
-
-		dma_free_writecombine(pcm->card->dev, buf->bytes,
-				buf->area, buf->addr);
-		buf->area = NULL;
-	}
-}
-
-static u64 spear_pcm_dmamask = DMA_BIT_MASK(32);
-
-static int spear_pcm_new(struct snd_card *card,
-		struct snd_soc_dai *dai, struct snd_pcm *pcm)
-{
-	int ret;
-
-	if (!card->dev->dma_mask)
-		card->dev->dma_mask = &spear_pcm_dmamask;
-	if (!card->dev->coherent_dma_mask)
-		card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
-
-	if (dai->driver->playback.channels_min) {
-		ret = spear_pcm_preallocate_dma_buffer(pcm,
-				SNDRV_PCM_STREAM_PLAYBACK,
-				spear_pcm_hardware.buffer_bytes_max);
-		if (ret)
-			return ret;
-	}
-
-	if (dai->driver->capture.channels_min) {
-		ret = spear_pcm_preallocate_dma_buffer(pcm,
-				SNDRV_PCM_STREAM_CAPTURE,
-				spear_pcm_hardware.buffer_bytes_max);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-struct snd_soc_platform_driver spear_soc_platform = {
-	.ops		=	&spear_pcm_ops,
-	.pcm_new	=	spear_pcm_new,
-	.pcm_free	=	spear_pcm_free,
-};
-
-static int spear_soc_platform_probe(struct platform_device *pdev)
-{
-	return snd_soc_register_platform(&pdev->dev, &spear_soc_platform);
-}
-
-static int spear_soc_platform_remove(struct platform_device *pdev)
-{
-	snd_soc_unregister_platform(&pdev->dev);
-
-	return 0;
-}
-
-static struct platform_driver spear_pcm_driver = {
-	.driver = {
-		.name = "spear-pcm-audio",
-		.owner = THIS_MODULE,
-	},
-
-	.probe = spear_soc_platform_probe,
-	.remove = spear_soc_platform_remove,
-};
-
-module_platform_driver(spear_pcm_driver);
+EXPORT_SYMBOL_GPL(devm_spear_pcm_platform_register);
 
 MODULE_AUTHOR("Rajeev Kumar <rajeev-dlh.kumar@st.com>");
 MODULE_DESCRIPTION("SPEAr PCM DMA module");
 MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:spear-pcm-audio");