#include <sound/dmaengine_pcm.h>
struct dmaengine_pcm {
- struct dma_chan *chan[SNDRV_PCM_STREAM_CAPTURE + 1];
+ struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1];
const struct snd_dmaengine_pcm_config *config;
struct snd_soc_platform platform;
unsigned int flags;
return container_of(p, struct dmaengine_pcm, platform);
}
+static struct device *dmaengine_dma_dev(struct dmaengine_pcm *pcm,
+ struct snd_pcm_substream *substream)
+{
+ if (!pcm->chan[substream->stream])
+ return NULL;
+
+ return pcm->chan[substream->stream]->device->dev;
+}
+
/**
* snd_dmaengine_pcm_prepare_slave_config() - Generic prepare_slave_config callback
* @substream: PCM substream
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);
struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
+ int (*prepare_slave_config)(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct dma_slave_config *slave_config);
struct dma_slave_config slave_config;
int ret;
- if (pcm->config->prepare_slave_config) {
- ret = pcm->config->prepare_slave_config(substream, params,
- &slave_config);
+ memset(&slave_config, 0, sizeof(slave_config));
+
+ if (!pcm->config)
+ prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
+ else
+ prepare_slave_config = pcm->config->prepare_slave_config;
+
+ if (prepare_slave_config) {
+ ret = prepare_slave_config(substream, params, &slave_config);
if (ret)
return ret;
return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
}
-static int dmaengine_pcm_open(struct snd_pcm_substream *substream)
+static int dmaengine_pcm_set_runtime_hwparams(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);
+ struct device *dma_dev = dmaengine_dma_dev(pcm, substream);
struct dma_chan *chan = pcm->chan[substream->stream];
+ struct snd_dmaengine_dai_dma_data *dma_data;
+ struct dma_slave_caps dma_caps;
+ struct snd_pcm_hardware hw;
int ret;
- ret = snd_soc_set_runtime_hwparams(substream,
+ if (pcm->config && pcm->config->pcm_hardware)
+ return snd_soc_set_runtime_hwparams(substream,
pcm->config->pcm_hardware);
- if (ret)
- return ret;
- return snd_dmaengine_pcm_open(substream, chan);
+ dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
+
+ memset(&hw, 0, sizeof(hw));
+ hw.info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED;
+ hw.periods_min = 2;
+ hw.periods_max = UINT_MAX;
+ hw.period_bytes_min = 256;
+ hw.period_bytes_max = dma_get_max_seg_size(dma_dev);
+ hw.buffer_bytes_max = SIZE_MAX;
+ hw.fifo_size = dma_data->fifo_size;
+
+ ret = dma_get_slave_caps(chan, &dma_caps);
+ if (ret == 0) {
+ if (dma_caps.cmd_pause)
+ hw.info |= SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME;
+ }
+
+ return snd_soc_set_runtime_hwparams(substream, &hw);
}
-static struct device *dmaengine_dma_dev(struct dmaengine_pcm *pcm,
- struct snd_pcm_substream *substream)
+static int dmaengine_pcm_open(struct snd_pcm_substream *substream)
{
- if (!pcm->chan[substream->stream])
- return NULL;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);
+ struct dma_chan *chan = pcm->chan[substream->stream];
+ int ret;
- return pcm->chan[substream->stream]->device->dev;
+ ret = dmaengine_pcm_set_runtime_hwparams(substream);
+ if (ret)
+ return ret;
+
+ return snd_dmaengine_pcm_open(substream, chan);
}
static void dmaengine_pcm_free(struct snd_pcm *pcm)
struct snd_pcm_substream *substream)
{
struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);
+ struct snd_dmaengine_dai_dma_data *dma_data;
+
+ dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) && pcm->chan[0])
return pcm->chan[0];
return pcm->config->compat_request_channel(rtd, substream);
return snd_dmaengine_pcm_request_channel(pcm->config->compat_filter_fn,
- snd_soc_dai_get_dma_data(rtd->cpu_dai, substream));
+ dma_data->filter_data);
}
static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform);
const struct snd_dmaengine_pcm_config *config = pcm->config;
+ struct device *dev = rtd->platform->dev;
+ struct snd_dmaengine_dai_dma_data *dma_data;
struct snd_pcm_substream *substream;
+ size_t prealloc_buffer_size;
+ size_t max_buffer_size;
unsigned int i;
int ret;
+ if (config && config->prealloc_buffer_size) {
+ prealloc_buffer_size = config->prealloc_buffer_size;
+ max_buffer_size = config->pcm_hardware->buffer_bytes_max;
+ } else {
+ prealloc_buffer_size = 512 * 1024;
+ max_buffer_size = SIZE_MAX;
+ }
+
+
for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) {
substream = rtd->pcm->streams[i].substream;
if (!substream)
continue;
+ dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
+
+ if (!pcm->chan[i] &&
+ (pcm->flags & SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME))
+ pcm->chan[i] = dma_request_slave_channel(dev,
+ dma_data->chan_name);
+
if (!pcm->chan[i] && (pcm->flags & SND_DMAENGINE_PCM_FLAG_COMPAT)) {
pcm->chan[i] = dmaengine_pcm_compat_request_channel(rtd,
substream);
ret = snd_pcm_lib_preallocate_pages(substream,
SNDRV_DMA_TYPE_DEV,
dmaengine_dma_dev(pcm, substream),
- config->prealloc_buffer_size,
- config->pcm_hardware->buffer_bytes_max);
+ prealloc_buffer_size,
+ max_buffer_size);
if (ret)
goto err_free;
}
{
unsigned int i;
- if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_DT) || !dev->of_node)
+ if ((pcm->flags & (SND_DMAENGINE_PCM_FLAG_NO_DT |
+ SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME)) ||
+ !dev->of_node)
return;
if (pcm->flags & SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX) {
projects / platform / kernel / linux-starfive.git / blobdiff