mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Kuninori Morimoto](/assets/img/avatar_default.png)
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/87y2rrhcia.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
275 lines
7.1 KiB
C
275 lines
7.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/dmaengine.h>
|
|
#include <linux/dma/pxa-dma.h>
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/pxa2xx-lib.h>
|
|
#include <sound/dmaengine_pcm.h>
|
|
|
|
static const struct snd_pcm_hardware pxa2xx_pcm_hardware = {
|
|
.info = SNDRV_PCM_INFO_MMAP |
|
|
SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_PAUSE |
|
|
SNDRV_PCM_INFO_RESUME,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE |
|
|
SNDRV_PCM_FMTBIT_S24_LE |
|
|
SNDRV_PCM_FMTBIT_S32_LE,
|
|
.period_bytes_min = 32,
|
|
.period_bytes_max = 8192 - 32,
|
|
.periods_min = 1,
|
|
.periods_max = 256,
|
|
.buffer_bytes_max = 128 * 1024,
|
|
.fifo_size = 32,
|
|
};
|
|
|
|
int pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
struct snd_dmaengine_dai_dma_data *dma_params;
|
|
struct dma_slave_config config;
|
|
int ret;
|
|
|
|
dma_params = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream);
|
|
if (!dma_params)
|
|
return 0;
|
|
|
|
ret = snd_hwparams_to_dma_slave_config(substream, params, &config);
|
|
if (ret)
|
|
return ret;
|
|
|
|
snd_dmaengine_pcm_set_config_from_dai_data(substream,
|
|
snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream),
|
|
&config);
|
|
|
|
ret = dmaengine_slave_config(chan, &config);
|
|
if (ret)
|
|
return ret;
|
|
|
|
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_hw_params);
|
|
|
|
int pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream)
|
|
{
|
|
snd_pcm_set_runtime_buffer(substream, NULL);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_hw_free);
|
|
|
|
int pxa2xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
return snd_dmaengine_pcm_trigger(substream, cmd);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_trigger);
|
|
|
|
snd_pcm_uframes_t
|
|
pxa2xx_pcm_pointer(struct snd_pcm_substream *substream)
|
|
{
|
|
return snd_dmaengine_pcm_pointer(substream);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_pointer);
|
|
|
|
int pxa2xx_pcm_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_prepare);
|
|
|
|
int pxa2xx_pcm_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct snd_dmaengine_dai_dma_data *dma_params;
|
|
int ret;
|
|
|
|
runtime->hw = pxa2xx_pcm_hardware;
|
|
|
|
dma_params = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream);
|
|
if (!dma_params)
|
|
return 0;
|
|
|
|
/*
|
|
* For mysterious reasons (and despite what the manual says)
|
|
* playback samples are lost if the DMA count is not a multiple
|
|
* of the DMA burst size. Let's add a rule to enforce that.
|
|
*/
|
|
ret = snd_pcm_hw_constraint_step(runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = snd_pcm_hw_constraint_step(runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = snd_pcm_hw_constraint_integer(runtime,
|
|
SNDRV_PCM_HW_PARAM_PERIODS);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return snd_dmaengine_pcm_open(
|
|
substream, dma_request_slave_channel(asoc_rtd_to_cpu(rtd, 0)->dev,
|
|
dma_params->chan_name));
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_open);
|
|
|
|
int pxa2xx_pcm_close(struct snd_pcm_substream *substream)
|
|
{
|
|
return snd_dmaengine_pcm_close_release_chan(substream);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_close);
|
|
|
|
int pxa2xx_pcm_mmap(struct snd_pcm_substream *substream,
|
|
struct vm_area_struct *vma)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
return dma_mmap_wc(substream->pcm->card->dev, vma, runtime->dma_area,
|
|
runtime->dma_addr, runtime->dma_bytes);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_mmap);
|
|
|
|
int pxa2xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
|
|
{
|
|
struct snd_pcm_substream *substream = pcm->streams[stream].substream;
|
|
struct snd_dma_buffer *buf = &substream->dma_buffer;
|
|
size_t size = pxa2xx_pcm_hardware.buffer_bytes_max;
|
|
buf->dev.type = SNDRV_DMA_TYPE_DEV;
|
|
buf->dev.dev = pcm->card->dev;
|
|
buf->private_data = NULL;
|
|
buf->area = dma_alloc_wc(pcm->card->dev, size, &buf->addr, GFP_KERNEL);
|
|
if (!buf->area)
|
|
return -ENOMEM;
|
|
buf->bytes = size;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_preallocate_dma_buffer);
|
|
|
|
void pxa2xx_pcm_free_dma_buffers(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->area)
|
|
continue;
|
|
dma_free_wc(pcm->card->dev, buf->bytes, buf->area, buf->addr);
|
|
buf->area = NULL;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_pcm_free_dma_buffers);
|
|
|
|
void pxa2xx_soc_pcm_free(struct snd_soc_component *component,
|
|
struct snd_pcm *pcm)
|
|
{
|
|
pxa2xx_pcm_free_dma_buffers(pcm);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_free);
|
|
|
|
int pxa2xx_soc_pcm_new(struct snd_soc_component *component,
|
|
struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
struct snd_card *card = rtd->card->snd_card;
|
|
struct snd_pcm *pcm = rtd->pcm;
|
|
int ret;
|
|
|
|
ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
|
|
ret = pxa2xx_pcm_preallocate_dma_buffer(pcm,
|
|
SNDRV_PCM_STREAM_PLAYBACK);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
|
|
ret = pxa2xx_pcm_preallocate_dma_buffer(pcm,
|
|
SNDRV_PCM_STREAM_CAPTURE);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_new);
|
|
|
|
int pxa2xx_soc_pcm_open(struct snd_soc_component *component,
|
|
struct snd_pcm_substream *substream)
|
|
{
|
|
return pxa2xx_pcm_open(substream);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_open);
|
|
|
|
int pxa2xx_soc_pcm_close(struct snd_soc_component *component,
|
|
struct snd_pcm_substream *substream)
|
|
{
|
|
return pxa2xx_pcm_close(substream);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_close);
|
|
|
|
int pxa2xx_soc_pcm_hw_params(struct snd_soc_component *component,
|
|
struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
return pxa2xx_pcm_hw_params(substream, params);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_hw_params);
|
|
|
|
int pxa2xx_soc_pcm_hw_free(struct snd_soc_component *component,
|
|
struct snd_pcm_substream *substream)
|
|
{
|
|
return pxa2xx_pcm_hw_free(substream);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_hw_free);
|
|
|
|
int pxa2xx_soc_pcm_prepare(struct snd_soc_component *component,
|
|
struct snd_pcm_substream *substream)
|
|
{
|
|
return pxa2xx_pcm_prepare(substream);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_prepare);
|
|
|
|
int pxa2xx_soc_pcm_trigger(struct snd_soc_component *component,
|
|
struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
return pxa2xx_pcm_trigger(substream, cmd);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_trigger);
|
|
|
|
snd_pcm_uframes_t
|
|
pxa2xx_soc_pcm_pointer(struct snd_soc_component *component,
|
|
struct snd_pcm_substream *substream)
|
|
{
|
|
return pxa2xx_pcm_pointer(substream);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_pointer);
|
|
|
|
int pxa2xx_soc_pcm_mmap(struct snd_soc_component *component,
|
|
struct snd_pcm_substream *substream,
|
|
struct vm_area_struct *vma)
|
|
{
|
|
return pxa2xx_pcm_mmap(substream, vma);
|
|
}
|
|
EXPORT_SYMBOL(pxa2xx_soc_pcm_mmap);
|
|
|
|
MODULE_AUTHOR("Nicolas Pitre");
|
|
MODULE_DESCRIPTION("Intel PXA2xx sound library");
|
|
MODULE_LICENSE("GPL");
|