static int omap_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct omap_runtime_data *prtd = runtime->private_data;
if (prtd->dma_data == NULL)
return 0;
omap_dma_unlink_lch(prtd->dma_ch, prtd->dma_ch);
omap_free_dma(prtd->dma_ch);
prtd->dma_data = NULL;
snd_pcm_set_runtime_buffer(substream, NULL);
return 0;
}
static int s3c24xx_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct s3c24xx_runtime_data *prtd = substream->runtime->private_data;
s3cdbg("Entered %s\n", __FUNCTION__);
/* TODO - do we need to ensure DMA flushed */
snd_pcm_set_runtime_buffer(substream, NULL);
if (prtd->params) {
s3c2410_dma_free(prtd->params->channel, prtd->params->client);
prtd->params = NULL;
}
return 0;
}
static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct imx_pcm_runtime_data *iprtd = runtime->private_data;
int i;
unsigned long dma_addr;
imx_ssi_dma_alloc(substream);
iprtd->size = params_buffer_bytes(params);
iprtd->periods = params_periods(params);
iprtd->period = params_period_bytes(params);
iprtd->offset = 0;
iprtd->period_time = HZ / (params_rate(params) /
params_period_size(params));
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
if (iprtd->sg_count != iprtd->periods) {
kfree(iprtd->sg_list);
iprtd->sg_list = kcalloc(iprtd->periods + 1,
sizeof(struct scatterlist), GFP_KERNEL);
if (!iprtd->sg_list)
return -ENOMEM;
iprtd->sg_count = iprtd->periods + 1;
}
sg_init_table(iprtd->sg_list, iprtd->sg_count);
dma_addr = runtime->dma_addr;
for (i = 0; i < iprtd->periods; i++) {
iprtd->sg_list[i].page_link = 0;
iprtd->sg_list[i].offset = 0;
iprtd->sg_list[i].dma_address = dma_addr;
iprtd->sg_list[i].length = iprtd->period;
dma_addr += iprtd->period;
}
/* close the loop */
iprtd->sg_list[iprtd->sg_count - 1].offset = 0;
iprtd->sg_list[iprtd->sg_count - 1].length = 0;
iprtd->sg_list[iprtd->sg_count - 1].page_link =
((unsigned long) iprtd->sg_list | 0x01) & ~0x02;
return 0;
}
static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct imx_pcm_runtime_data *iprtd = runtime->private_data;
iprtd->size = params_buffer_bytes(params);
iprtd->periods = params_periods(params);
iprtd->period = params_period_bytes(params) ;
iprtd->offset = 0;
iprtd->last_offset = 0;
iprtd->poll_time = HZ / (params_rate(params) / params_period_size(params));
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
return 0;
}
static int rockchip_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct rockchip_runtime_data *prtd = substream->runtime->private_data;
DBG("Enter::%s----%d\n",__FUNCTION__,__LINE__);
/* TODO - do we need to ensure DMA flushed */
snd_pcm_set_runtime_buffer(substream, NULL);
if (prtd->params) {
#ifdef CONFIG_SND_I2S_DMA_EVENT_DYNAMIC
rk29_dma_free(prtd->params->channel, prtd->params->client);
prtd->params = NULL;
#endif
}
return 0;
}
static int hi3630_srcup_normal_hw_free(struct snd_pcm_substream *substream)
{
struct hi3630_srcup_runtime_data *prtd = substream->runtime->private_data;
struct hi3630_srcup_data *pdata = prtd->pdata;
int ret = 0;
if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
/* clear interrupt */
hi3630_srcup_reg_write(pdata, HI3630_SRCUP_CH_INT_FLAG_REG, SRCUP_CH0_MASK);
ret = snd_pcm_lib_free_pages(substream);
}
snd_pcm_set_runtime_buffer(substream, NULL);
return ret;
}
/**
* snd_pcm_lib_free_pages - release the allocated DMA buffer.
* @substream: the substream to release the DMA buffer
*
* Releases the DMA buffer allocated via snd_pcm_lib_malloc_pages().
*
* Returns zero if successful, or a negative error code on failure.
*/
int snd_pcm_lib_free_pages(snd_pcm_substream_t *substream)
{
snd_pcm_runtime_t *runtime;
snd_assert(substream != NULL, return -EINVAL);
runtime = substream->runtime;
snd_assert(runtime != NULL, return -EINVAL);
if (runtime->dma_area == NULL)
return 0;
if (runtime->dma_buffer_p != &substream->dma_buffer) {
/* it's a newly allocated buffer. release it now. */
snd_dma_free_pages(runtime->dma_buffer_p);
kfree(runtime->dma_buffer_p);
}
snd_pcm_set_runtime_buffer(substream, NULL);
return 0;
}
/**
* snd_pcm_lib_free_pages - release the allocated DMA buffer.
* @substream: the substream to release the DMA buffer
*
* Releases the DMA buffer allocated via snd_pcm_lib_malloc_pages().
*
* Return: Zero if successful, or a negative error code on failure.
*/
int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime;
if (PCM_RUNTIME_CHECK(substream))
return -EINVAL;
runtime = substream->runtime;
if (runtime->dma_area == NULL)
return 0;
if (runtime->dma_buffer_p != &substream->dma_buffer) {
/* it's a newly allocated buffer. release it now. */
snd_dma_free_pages(runtime->dma_buffer_p);
kfree(runtime->dma_buffer_p);
}
snd_pcm_set_runtime_buffer(substream, NULL);
return 0;
}
static int sun4i_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct sun4i_runtime_data *prtd = substream->runtime->private_data;
/* TODO - do we need to ensure DMA flushed */
if(prtd->params)
sw_dma_ctrl(prtd->params->channel, SW_DMAOP_FLUSH);
snd_pcm_set_runtime_buffer(substream, NULL);
if (prtd->params) {
sw_dma_free(prtd->params->channel, prtd->params->client);
prtd->params = NULL;
}
return 0;
}
static int dma_hw_free(struct snd_pcm_substream *substream)
{
struct runtime_data *prtd = substream->runtime->private_data;
pr_debug("Entered %s\n", __func__);
snd_pcm_set_runtime_buffer(substream, NULL);
if (prtd->params) {
prtd->params->ops->flush(prtd->params->ch);
prtd->params->ops->release(prtd->params->ch,
prtd->params->client);
prtd->params = NULL;
}
return 0;
}
static int sunxi_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct sunxi_dma_params *dmap;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct device *dev = rtd->platform->dev;
struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
struct dma_slave_config slave_config;
int ret;
dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
ret = snd_hwparams_to_dma_slave_config(substream, params, &slave_config);
if (ret) {
dev_err(dev, "hw params config failed with err %d\n", ret);
return ret;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (SNDRV_PCM_FORMAT_S16_LE == params_format(params)) {
slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
} else {
slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
}
slave_config.dst_addr = dmap->dma_addr;
slave_config.dst_maxburst = 4;
slave_config.src_maxburst = 4;
slave_config.slave_id = sunxi_slave_id(DRQDST_DAUDIO_1_TX, DRQSRC_SDRAM);
} else {
slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
slave_config.src_addr = dmap->dma_addr;
slave_config.dst_maxburst = 4;
slave_config.src_maxburst = 4;
slave_config.slave_id = sunxi_slave_id(DRQDST_SDRAM, DRQSRC_DAUDIO_1_RX);
}
ret = dmaengine_slave_config(chan, &slave_config);
if (ret < 0) {
dev_err(dev, "dma slave config failed with err %d\n", ret);
return ret;
}
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
return 0;
}
/* Release all dynamiclly allocated resources.
*/
static int i2sirx_i2so_mix_hw_free
(
struct snd_pcm_substream *substream
)
{
struct i2sirx_i2so_mix_info *mix;
printk("%s,%d\n", __FUNCTION__, __LINE__);
mix = substream->runtime->private_data;
snd_pcm_set_runtime_buffer(substream, NULL);
//printk("%s,%d\n", __FUNCTION__, __LINE__);
return(0);
}
static void ux500_pcm_dma_hw_free(struct device *dev,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_dma_buffer *buf = runtime->dma_buffer_p;
if (runtime->dma_area == NULL)
return;
if (buf != &substream->dma_buffer) {
dma_free_coherent(buf->dev.dev, buf->bytes, buf->area,
buf->addr);
kfree(runtime->dma_buffer_p);
}
snd_pcm_set_runtime_buffer(substream, NULL);
}
int tegra_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct device *dev = rtd->platform->dev;
struct dma_chan *chan;
struct tegra_pcm_dma_params *dmap;
struct dma_slave_config slave_config;
int ret;
if (rtd->dai_link->no_pcm)
return 0;
chan = snd_dmaengine_pcm_get_chan(substream);
dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
if (!dmap)
return 0;
ret = snd_hwparams_to_dma_slave_config(substream, params,
&slave_config);
if (ret) {
dev_err(dev, "hw params config failed with err %d\n", ret);
return ret;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
slave_config.dst_addr = dmap->addr;
slave_config.dst_maxburst = 4;
} else {
slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
slave_config.src_addr = dmap->addr;
slave_config.src_maxburst = 4;
}
slave_config.slave_id = dmap->req_sel;
ret = dmaengine_slave_config(chan, &slave_config);
if (ret < 0) {
dev_err(dev, "dma slave config failed with err %d\n", ret);
return ret;
}
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
return 0;
}
/*
* PCM operations
*/
static int lpc3xxx_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct lpc3xxx_dma_data *prtd = runtime->private_data;
/* this may get called several times by oss emulation
* with different params
*/
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
runtime->dma_bytes = params_buffer_bytes(params);
prtd->dma_buffer = runtime->dma_addr;
prtd->dma_buffer_end = runtime->dma_addr + runtime->dma_bytes;
prtd->period_size = params_period_bytes(params);
return 0;
}
static int bcm947xx_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
bcm947xx_i2s_info_t *snd_bcm = rtd->dai->cpu_dai->private_data;
DBG("%s %s\n", __FUNCTION__, bcm947xx_direction_str(substream));
snd_pcm_set_runtime_buffer(substream, NULL);
/* This stream is no longer consider in-use. */
snd_bcm->in_use &= ~(1 << substream->stream);
if (!snd_bcm->in_use)
{ /* All streams are not used. */
bcm947xx_pcm_clear_joint_duplex_settings(snd_bcm);
}
return 0;
}
static int mt76xx_pcm_free_dma_buffer(struct snd_pcm_substream *substream,
int stream)
{
//struct snd_pcm_substream *substream = pcm->streams[stream].substream;
struct snd_dma_buffer *buf = &substream->dma_buffer;
i2s_config_type* rtd = (i2s_config_type*)substream->runtime->private_data;
//printk("******* %s *******\n", __func__);
if (!buf->area)
return 0;
if(substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
i2s_memPool_free(rtd,STREAM_PLAYBACK);
else
i2s_memPool_free(rtd,STREAM_CAPTURE);
buf->area = NULL;
snd_pcm_set_runtime_buffer(substream, NULL);
return 0;
}
static int hi3630_pcm_hdmi_hw_free(struct snd_pcm_substream *substream)
{
struct hi3630_hdmi_runtime_data *prtd = substream->runtime->private_data;
struct hi3630_hdmi_data *pdata = prtd->pdata;
int ret = 0;
if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
wait_hdmi_dma_stop(prtd);
/*clear interrupt*/
hi3630_hdmi_reg_write(pdata, HI3630_ASP_INT_CLR, HDMI_INT_MASK);
ret = snd_pcm_lib_free_pages(substream);
}
snd_pcm_set_runtime_buffer(substream, NULL);
return ret;
}
static int dma_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct nusmart_runtime_data *prtd = runtime->private_data;
//struct nusmart_pcm_dma_data *dma_data = rtd->cpu_dai->dma_data;
struct nusmart_pcm_dma_data *dma_data;
dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
/* return if this is a bufferless transfer e.g.
* codec <--> BT codec or GSM modem -- lg FIXME */
if (!dma_data)
return 0;
switch(params_format(params)) {
case SNDRV_PCM_FORMAT_S8:
dma_data->i2s_width = 0;
break;
case SNDRV_PCM_FORMAT_S16_LE:
dma_data->i2s_width = 1;
break;
case SNDRV_PCM_FORMAT_S24_LE:
dma_data->i2s_width = 2;
break;
}
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
runtime->dma_bytes = params_buffer_bytes(params);
if (prtd->dma_data)
return 0;
prtd->dma_data = dma_data;
return 0;
}
/**
* snd_pcm_lib_malloc_pages - allocate the DMA buffer
* @substream: the substream to allocate the DMA buffer to
* @size: the requested buffer size in bytes
*
* Allocates the DMA buffer on the BUS type given earlier to
* snd_pcm_lib_preallocate_xxx_pages().
*
* Return: 1 if the buffer is changed, 0 if not changed, or a negative
* code on failure.
*/
int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size)
{
struct snd_pcm_runtime *runtime;
struct snd_dma_buffer *dmab = NULL;
if (PCM_RUNTIME_CHECK(substream))
return -EINVAL;
if (snd_BUG_ON(substream->dma_buffer.dev.type ==
SNDRV_DMA_TYPE_UNKNOWN))
return -EINVAL;
runtime = substream->runtime;
if (runtime->dma_buffer_p) {
/* perphaps, we might free the large DMA memory region
to save some space here, but the actual solution
costs us less time */
if (runtime->dma_buffer_p->bytes >= size) {
runtime->dma_bytes = size;
return 0; /* ok, do not change */
}
snd_pcm_lib_free_pages(substream);
}
if (substream->dma_buffer.area != NULL &&
substream->dma_buffer.bytes >= size) {
dmab = &substream->dma_buffer; /* use the pre-allocated buffer */
} else {
dmab = kzalloc(sizeof(*dmab), GFP_KERNEL);
if (! dmab)
return -ENOMEM;
dmab->dev = substream->dma_buffer.dev;
if (snd_dma_alloc_pages(substream->dma_buffer.dev.type,
substream->dma_buffer.dev.dev,
size, dmab) < 0) {
kfree(dmab);
return -ENOMEM;
}
}
snd_pcm_set_runtime_buffer(substream, dmab);
runtime->dma_bytes = size;
return 1; /* area was changed */
}
static int msm_afe_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_dma_buffer *dma_buf = &substream->dma_buffer;
struct pcm_afe_info *prtd = runtime->private_data;
int rc;
pr_debug("%s:\n", __func__);
mutex_lock(&prtd->lock);
dma_buf->dev.type = SNDRV_DMA_TYPE_DEV;
dma_buf->dev.dev = substream->pcm->card->dev;
dma_buf->private_data = NULL;
dma_buf->area = dma_alloc_coherent(dma_buf->dev.dev,
runtime->hw.buffer_bytes_max,
&dma_buf->addr, GFP_KERNEL);
pr_debug("%s: dma_buf->area: 0x%p, dma_buf->addr: 0x%x", __func__,
(unsigned int *) dma_buf->area, dma_buf->addr);
if (!dma_buf->area) {
pr_err("%s:MSM AFE memory allocation failed\n", __func__);
mutex_unlock(&prtd->lock);
return -ENOMEM;
}
dma_buf->bytes = runtime->hw.buffer_bytes_max;
memset(dma_buf->area, 0, runtime->hw.buffer_bytes_max);
prtd->dma_addr = (u32) dma_buf->addr;
mutex_unlock(&prtd->lock);
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
rc = afe_cmd_memory_map(dma_buf->addr, dma_buf->bytes);
if (rc < 0)
pr_err("fail to map memory to DSP\n");
return rc;
}
static int sun4i_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct sun4i_runtime_data *prtd = runtime->private_data;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
unsigned long totbytes = params_buffer_bytes(params);
struct sun4i_dma_params *dma =
snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
int ret = 0;
if (!dma)
return 0;
if (prtd->params == NULL) {
prtd->params = dma;
ret = sw_dma_request(prtd->params->channel,
prtd->params->client, NULL);
if (ret < 0) {
return ret;
}
}
sw_dma_set_buffdone_fn(prtd->params->channel,
sun4i_audio_buffdone);
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
runtime->dma_bytes = totbytes;
spin_lock_irq(&prtd->lock);
prtd->dma_loaded = 0;
prtd->dma_limit = runtime->hw.periods_min;
prtd->dma_period = params_period_bytes(params);
prtd->dma_start = runtime->dma_addr;
prtd->dma_pos = prtd->dma_start;
prtd->dma_end = prtd->dma_start + totbytes;
spin_unlock_irq(&prtd->lock);
return 0;
}
static int msm_lsm_lab_buffer_alloc(struct lsm_priv *lsm, int alloc)
{
int ret = 0;
struct snd_dma_buffer *dma_buf = NULL;
if (!lsm) {
pr_err("%s: Invalid param lsm %p\n", __func__, lsm);
return -EINVAL;
}
if (alloc) {
if (!lsm->substream) {
pr_err("%s: substream is NULL\n", __func__);
return -EINVAL;
}
ret = q6lsm_lab_buffer_alloc(lsm->lsm_client, alloc);
if (ret) {
pr_err("%s: alloc lab buffer failed ret %d\n",
__func__, ret);
goto exit;
}
dma_buf = &lsm->substream->dma_buffer;
dma_buf->dev.type = SNDRV_DMA_TYPE_DEV;
dma_buf->dev.dev = lsm->substream->pcm->card->dev;
dma_buf->private_data = NULL;
dma_buf->area = lsm->lsm_client->lab_buffer[0].data;
dma_buf->addr = lsm->lsm_client->lab_buffer[0].phys;
dma_buf->bytes = lsm->lsm_client->hw_params.buf_sz *
lsm->lsm_client->hw_params.period_count;
snd_pcm_set_runtime_buffer(lsm->substream, dma_buf);
} else {
ret = q6lsm_lab_buffer_alloc(lsm->lsm_client, alloc);
if (ret)
pr_err("%s: free lab buffer failed ret %d\n",
__func__, ret);
kfree(lsm->lsm_client->lab_buffer);
lsm->lsm_client->lab_buffer = NULL;
}
exit:
return ret;
}
int devdma_hw_alloc(struct device *dev, struct snd_pcm_substream *substream, size_t size)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_dma_buffer *buf = runtime->dma_buffer_p;
int ret = 0;
if (buf) {
if (buf->bytes >= size)
goto out;
devdma_hw_free(dev, substream);
}
if (substream->dma_buffer.area != NULL && substream->dma_buffer.bytes >= size) {
buf = &substream->dma_buffer;
} else {
buf = kmalloc(sizeof(struct snd_dma_buffer), GFP_KERNEL);
if (!buf)
goto nomem;
buf->dev.type = SNDRV_DMA_TYPE_DEV;
buf->dev.dev = dev;
buf->area = dma_alloc_coherent(dev, size, &buf->addr, GFP_KERNEL);
buf->bytes = size;
buf->private_data = NULL;
if (!buf->area)
goto free;
}
snd_pcm_set_runtime_buffer(substream, buf);
ret = 1;
out:
runtime->dma_bytes = size;
return ret;
free:
kfree(buf);
nomem:
return -ENOMEM;
}
static int ep93xx_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct ep93xx_runtime_data *rtd = runtime->private_data;
size_t totsize = params_buffer_bytes(params);
size_t period = params_period_bytes(params);
int i;
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
runtime->dma_bytes = totsize;
rtd->periods = (totsize + period - 1) / period;
for (i = 0; i < rtd->periods; i++) {
rtd->buf[i].bus_addr = runtime->dma_addr + (i * period);
rtd->buf[i].size = period;
if ((i + 1) * period > totsize)
rtd->buf[i].size = totsize - (i * period);
}
return 0;
}
static int lpass_platform_pcmops_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
int ret;
snd_soc_set_runtime_hwparams(substream, &lpass_platform_pcm_hardware);
runtime->dma_bytes = lpass_platform_pcm_hardware.buffer_bytes_max;
ret = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (ret < 0) {
dev_err(soc_runtime->dev, "%s() setting constraints failed: %d\n",
__func__, ret);
return -EINVAL;
}
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
return 0;
}
/* this may get called several times by oss emulation */
static int omap_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct omap_pcm_dma_data *dma_data;
struct dma_slave_config config;
struct dma_chan *chan;
int err = 0;
memset(&config, 0x00, sizeof(config));
dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
/* return if this is a bufferless transfer e.g.
* codec <--> BT codec or GSM modem -- lg FIXME */
if (!dma_data)
return 0;
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
runtime->dma_bytes = params_buffer_bytes(params);
chan = snd_dmaengine_pcm_get_chan(substream);
if (!chan)
return -EINVAL;
/* fills in addr_width and direction */
err = snd_hwparams_to_dma_slave_config(substream, params, &config);
if (err)
return err;
snd_dmaengine_pcm_set_config_from_dai_data(substream,
snd_soc_dai_get_dma_data(rtd->cpu_dai, substream),
&config);
return dmaengine_slave_config(chan, &config);
}
static int at91_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct at91_runtime_data *prtd = runtime->private_data;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
/* this may get called several times by oss emulation
* with different params */
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
runtime->dma_bytes = params_buffer_bytes(params);
prtd->params = rtd->dai->cpu_dai->dma_data;
prtd->params->dma_intr_handler = at91_pcm_dma_irq;
prtd->dma_buffer = runtime->dma_addr;
prtd->dma_buffer_end = runtime->dma_addr + runtime->dma_bytes;
prtd->period_size = params_period_bytes(params);
DBG("hw_params: DMA for %s initialized (dma_bytes=%d, period_size=%d)\n",
prtd->params->name, runtime->dma_bytes, prtd->period_size);
return 0;
}
int __pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct pxa2xx_runtime_data *rtd = runtime->private_data;
size_t totsize = params_buffer_bytes(params);
size_t period = params_period_bytes(params);
pxa_dma_desc *dma_desc;
dma_addr_t dma_buff_phys, next_desc_phys;
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
runtime->dma_bytes = totsize;
dma_desc = rtd->dma_desc_array;
next_desc_phys = rtd->dma_desc_array_phys;
dma_buff_phys = runtime->dma_addr;
do {
next_desc_phys += sizeof(pxa_dma_desc);
dma_desc->ddadr = next_desc_phys;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
dma_desc->dsadr = dma_buff_phys;
dma_desc->dtadr = rtd->params->dev_addr;
} else {
dma_desc->dsadr = rtd->params->dev_addr;
dma_desc->dtadr = dma_buff_phys;
}
if (period > totsize)
period = totsize;
dma_desc->dcmd = rtd->params->dcmd | period | DCMD_ENDIRQEN;
dma_desc++;
dma_buff_phys += period;
} while (totsize -= period);
dma_desc[-1].ddadr = rtd->dma_desc_array_phys;
return 0;
}
static int dma_hw_free(struct snd_pcm_substream *substream)
{
struct runtime_data *prtd = substream->runtime->private_data;
pr_debug("Entered %s\n", __func__);
/* TODO - do we need to ensure DMA flushed */
snd_pcm_set_runtime_buffer(substream, NULL);
#ifdef CONFIG_SLP_WIP
spin_lock(&prtd->lock);
#endif
if (prtd->params) {
s3c2410_dma_free(prtd->params->channel, prtd->params->client);
prtd->params = NULL;
}
#ifdef CONFIG_SLP_WIP
spin_unlock(&prtd->lock);
#endif
return 0;
}