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ASoC: soc-compress: Add support for not memory mapped DSPs

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The ASoC compressed API did not implement the copy callback in its
compressed ops which is required for DSPs that are not memory mapped.

This patch creates a local copy of the compress ops for each runtime and
modifies them with a copy callback as appropriate.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Charles Keepax 2013-02-05 10:41:47 +00:00 committed by Mark Brown
parent 202c8f7082
commit 1f88eb0f06
1 changed files with 35 additions and 3 deletions
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38
sound/soc/soc-compress.c
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@ -302,6 +302,22 @@ static int soc_compr_pointer(struct snd_compr_stream *cstream,
return 0;
}
static int soc_compr_copy(struct snd_compr_stream *cstream,
const char __user *buf, size_t count)
{
struct snd_soc_pcm_runtime *rtd = cstream->private_data;
struct snd_soc_platform *platform = rtd->platform;
int ret = 0;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
ret = platform->driver->compr_ops->copy(cstream, buf, count);
mutex_unlock(&rtd->pcm_mutex);
return ret;
}
/* ASoC Compress operations */
static struct snd_compr_ops soc_compr_ops = {
.open = soc_compr_open,
@ -319,6 +335,7 @@ static struct snd_compr_ops soc_compr_ops = {
int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_platform *platform = rtd->platform;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_compr *compr;
@ -335,14 +352,25 @@ int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
return -ENOMEM;
}
compr->ops = &soc_compr_ops;
compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
GFP_KERNEL);
if (compr->ops == NULL) {
dev_err(rtd->card->dev, "Cannot allocate compressed ops\n");
ret = -ENOMEM;
goto compr_err;
}
memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
/* Add copy callback for not memory mapped DSPs */
if (platform->driver->compr_ops && platform->driver->compr_ops->copy)
compr->ops->copy = soc_compr_copy;
mutex_init(&compr->lock);
ret = snd_compress_new(rtd->card->snd_card, num, direction, compr);
if (ret < 0) {
pr_err("compress asoc: can't create compress for codec %s\n",
codec->name);
kfree(compr);
return ret;
goto compr_err;
}
/* DAPM dai link stream work */
@ -354,4 +382,8 @@ int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name,
cpu_dai->name);
return ret;
compr_err:
kfree(compr);
return ret;
}