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authorLars-Peter Clausen <lars@metafoo.de>2013-03-22 14:12:13 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-03-26 14:17:41 +0000
commitb7e5e91210fc9d40f93f87e386823e4ba9b32805 (patch)
tree40b5ead3e2e813845c389cece7a9a5735d2f62a0 /sound/soc/mxs
parent312bb4f626328fdc246c8d13082ab00e26e7d048 (diff)
downloadop-kernel-dev-b7e5e91210fc9d40f93f87e386823e4ba9b32805.zip
op-kernel-dev-b7e5e91210fc9d40f93f87e386823e4ba9b32805.tar.gz
ASoC: mxs: Embed the mxs_dma_data struct in the mxs_pcm_dma_params struct
Currently the mxs_dma_data struct, which gets passed to the dmaengine driver, is allocated in the pcm driver's open callback. The mxs_dma_data struct has exactly one field which is initialized from the the same field in the mxs_pcm_dma_params struct. The mxs_pcm_dma_params struct gets passed to the pcm driver from the dai driver. Instead of taking this indirection embed the mxs_dma_data struct directly in the mxs_pcm_dma_params struct. This allows us to simplify the pcm driver quite a bit, since we don't have to care about memory managing the mxs_dma_data struct anymore. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/mxs')
-rw-r--r--sound/soc/mxs/mxs-pcm.c43
-rw-r--r--sound/soc/mxs/mxs-pcm.h4
-rw-r--r--sound/soc/mxs/mxs-saif.c6
3 files changed, 11 insertions, 42 deletions
diff --git a/sound/soc/mxs/mxs-pcm.c b/sound/soc/mxs/mxs-pcm.c
index 564b5b6..ebbef85 100644
--- a/sound/soc/mxs/mxs-pcm.c
+++ b/sound/soc/mxs/mxs-pcm.c
@@ -28,7 +28,6 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/dmaengine.h>
-#include <linux/fsl/mxs-dma.h>
#include <sound/core.h>
#include <sound/initval.h>
@@ -39,11 +38,6 @@
#include "mxs-pcm.h"
-struct mxs_pcm_dma_data {
- struct mxs_dma_data dma_data;
- struct mxs_pcm_dma_params *dma_params;
-};
-
static struct snd_pcm_hardware snd_mxs_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
@@ -66,8 +60,7 @@ static struct snd_pcm_hardware snd_mxs_hardware = {
static bool filter(struct dma_chan *chan, void *param)
{
- struct mxs_pcm_dma_data *pcm_dma_data = param;
- struct mxs_pcm_dma_params *dma_params = pcm_dma_data->dma_params;
+ struct mxs_pcm_dma_params *dma_params = param;
if (!mxs_dma_is_apbx(chan))
return false;
@@ -75,7 +68,7 @@ static bool filter(struct dma_chan *chan, void *param)
if (chan->chan_id != dma_params->chan_num)
return false;
- chan->private = &pcm_dma_data->dma_data;
+ chan->private = &dma_params->dma_data;
return true;
}
@@ -91,37 +84,11 @@ static int snd_mxs_pcm_hw_params(struct snd_pcm_substream *substream,
static int snd_mxs_open(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct mxs_pcm_dma_data *pcm_dma_data;
- int ret;
-
- pcm_dma_data = kzalloc(sizeof(*pcm_dma_data), GFP_KERNEL);
- if (pcm_dma_data == NULL)
- return -ENOMEM;
-
- pcm_dma_data->dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
- pcm_dma_data->dma_data.chan_irq = pcm_dma_data->dma_params->chan_irq;
-
- ret = snd_dmaengine_pcm_open(substream, filter, pcm_dma_data);
- if (ret) {
- kfree(pcm_dma_data);
- return ret;
- }
snd_soc_set_runtime_hwparams(substream, &snd_mxs_hardware);
- snd_dmaengine_pcm_set_data(substream, pcm_dma_data);
-
- return 0;
-}
-
-static int snd_mxs_close(struct snd_pcm_substream *substream)
-{
- struct mxs_pcm_dma_data *pcm_dma_data = snd_dmaengine_pcm_get_data(substream);
-
- snd_dmaengine_pcm_close(substream);
- kfree(pcm_dma_data);
-
- return 0;
+ return snd_dmaengine_pcm_open(substream, filter,
+ snd_soc_dai_get_dma_data(rtd->cpu_dai, substream));
}
static int snd_mxs_pcm_mmap(struct snd_pcm_substream *substream,
@@ -137,7 +104,7 @@ static int snd_mxs_pcm_mmap(struct snd_pcm_substream *substream,
static struct snd_pcm_ops mxs_pcm_ops = {
.open = snd_mxs_open,
- .close = snd_mxs_close,
+ .close = snd_dmaengine_pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_mxs_pcm_hw_params,
.trigger = snd_dmaengine_pcm_trigger,
diff --git a/sound/soc/mxs/mxs-pcm.h b/sound/soc/mxs/mxs-pcm.h
index 35ba2ca..3aa918f 100644
--- a/sound/soc/mxs/mxs-pcm.h
+++ b/sound/soc/mxs/mxs-pcm.h
@@ -19,8 +19,10 @@
#ifndef _MXS_PCM_H
#define _MXS_PCM_H
+#include <linux/fsl/mxs-dma.h>
+
struct mxs_pcm_dma_params {
- int chan_irq;
+ struct mxs_dma_data dma_data;
int chan_num;
};
diff --git a/sound/soc/mxs/mxs-saif.c b/sound/soc/mxs/mxs-saif.c
index 3a2aa1d..f13bd87 100644
--- a/sound/soc/mxs/mxs-saif.c
+++ b/sound/soc/mxs/mxs-saif.c
@@ -753,9 +753,9 @@ static int mxs_saif_probe(struct platform_device *pdev)
return ret;
}
- saif->dma_param.chan_irq = platform_get_irq(pdev, 1);
- if (saif->dma_param.chan_irq < 0) {
- ret = saif->dma_param.chan_irq;
+ saif->dma_param.dma_data.chan_irq = platform_get_irq(pdev, 1);
+ if (saif->dma_param.dma_data.chan_irq < 0) {
+ ret = saif->dma_param.dma_data.chan_irq;
dev_err(&pdev->dev, "failed to get dma irq resource: %d\n",
ret);
return ret;
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