summaryrefslogtreecommitdiffstats
path: root/sound/soc/fsl/imx-pcm-dma.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/fsl/imx-pcm-dma.c')
-rw-r--r--sound/soc/fsl/imx-pcm-dma.c76
1 files changed, 15 insertions, 61 deletions
diff --git a/sound/soc/fsl/imx-pcm-dma.c b/sound/soc/fsl/imx-pcm-dma.c
index ee838c8a3b1..c246fb51493 100644
--- a/sound/soc/fsl/imx-pcm-dma.c
+++ b/sound/soc/fsl/imx-pcm-dma.c
@@ -11,22 +11,12 @@
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
#include <linux/platform_device.h>
-#include <linux/slab.h>
#include <linux/dmaengine.h>
#include <linux/types.h>
#include <sound/core.h>
-#include <sound/initval.h>
#include <sound/pcm.h>
-#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/dmaengine_pcm.h>
@@ -44,32 +34,7 @@ static bool filter(struct dma_chan *chan, void *param)
return true;
}
-static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
- struct dma_slave_config slave_config;
- int ret;
-
- ret = snd_hwparams_to_dma_slave_config(substream, params, &slave_config);
- if (ret)
- return ret;
-
- snd_dmaengine_pcm_set_config_from_dai_data(substream,
- snd_soc_dai_get_dma_data(rtd->cpu_dai, substream),
- &slave_config);
-
- ret = dmaengine_slave_config(chan, &slave_config);
- if (ret)
- return ret;
-
- snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
-
- return 0;
-}
-
-static struct snd_pcm_hardware snd_imx_hardware = {
+static const struct snd_pcm_hardware imx_pcm_hardware = {
.info = SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP |
@@ -88,33 +53,22 @@ static struct snd_pcm_hardware snd_imx_hardware = {
.fifo_size = 0,
};
-static int snd_imx_open(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
-
- snd_soc_set_runtime_hwparams(substream, &snd_imx_hardware);
-
- return snd_dmaengine_pcm_open(substream, filter,
- snd_soc_dai_get_dma_data(rtd->cpu_dai, substream));
-}
-
-static struct snd_pcm_ops imx_pcm_ops = {
- .open = snd_imx_open,
- .close = snd_dmaengine_pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = snd_imx_pcm_hw_params,
- .trigger = snd_dmaengine_pcm_trigger,
- .pointer = snd_dmaengine_pcm_pointer_no_residue,
- .mmap = snd_imx_pcm_mmap,
-};
-
-static struct snd_soc_platform_driver imx_soc_platform_mx2 = {
- .ops = &imx_pcm_ops,
- .pcm_new = imx_pcm_new,
- .pcm_free = imx_pcm_free,
+static const struct snd_dmaengine_pcm_config imx_dmaengine_pcm_config = {
+ .pcm_hardware = &imx_pcm_hardware,
+ .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
+ .compat_filter_fn = filter,
+ .prealloc_buffer_size = IMX_SSI_DMABUF_SIZE,
};
int imx_pcm_dma_init(struct platform_device *pdev)
{
- return snd_soc_register_platform(&pdev->dev, &imx_soc_platform_mx2);
+ return snd_dmaengine_pcm_register(&pdev->dev, &imx_dmaengine_pcm_config,
+ SND_DMAENGINE_PCM_FLAG_NO_RESIDUE |
+ SND_DMAENGINE_PCM_FLAG_NO_DT |
+ SND_DMAENGINE_PCM_FLAG_COMPAT);
+}
+
+void imx_pcm_dma_exit(struct platform_device *pdev)
+{
+ snd_dmaengine_pcm_unregister(&pdev->dev);
}