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path: root/sound/soc/fsl/fsl_asrc_dma.c
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Diffstat (limited to 'sound/soc/fsl/fsl_asrc_dma.c')
-rw-r--r--sound/soc/fsl/fsl_asrc_dma.c328
1 files changed, 208 insertions, 120 deletions
diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c
index 01052a0808b0..1bba48318e2d 100644
--- a/sound/soc/fsl/fsl_asrc_dma.c
+++ b/sound/soc/fsl/fsl_asrc_dma.c
@@ -8,21 +8,19 @@
#include <linux/dma-mapping.h>
#include <linux/module.h>
-#include <linux/platform_data/dma-imx.h>
+#include <linux/dma/imx-dma.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm_params.h>
-#include "fsl_asrc.h"
+#include "fsl_asrc_common.h"
#define FSL_ASRC_DMABUF_SIZE (256 * 1024)
-static const struct snd_pcm_hardware snd_imx_hardware = {
+static struct snd_pcm_hardware snd_imx_hardware = {
.info = SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP |
- SNDRV_PCM_INFO_MMAP_VALID |
- SNDRV_PCM_INFO_PAUSE |
- SNDRV_PCM_INFO_RESUME,
+ SNDRV_PCM_INFO_MMAP_VALID,
.buffer_bytes_max = FSL_ASRC_DMABUF_SIZE,
.period_bytes_min = 128,
.period_bytes_max = 65535, /* Limited by SDMA engine */
@@ -54,13 +52,12 @@ static void fsl_asrc_dma_complete(void *arg)
snd_pcm_period_elapsed(substream);
}
-static int fsl_asrc_dma_prepare_and_submit(struct snd_pcm_substream *substream)
+static int fsl_asrc_dma_prepare_and_submit(struct snd_pcm_substream *substream,
+ struct snd_soc_component *component)
{
u8 dir = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? OUT : IN;
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_asrc_pair *pair = runtime->private_data;
- struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
struct device *dev = component->dev;
unsigned long flags = DMA_CTRL_ACK;
@@ -97,7 +94,8 @@ static int fsl_asrc_dma_prepare_and_submit(struct snd_pcm_substream *substream)
return 0;
}
-static int fsl_asrc_dma_trigger(struct snd_pcm_substream *substream, int cmd)
+static int fsl_asrc_dma_trigger(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream, int cmd)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_asrc_pair *pair = runtime->private_data;
@@ -107,7 +105,7 @@ static int fsl_asrc_dma_trigger(struct snd_pcm_substream *substream, int cmd)
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- ret = fsl_asrc_dma_prepare_and_submit(substream);
+ ret = fsl_asrc_dma_prepare_and_submit(substream, component);
if (ret)
return ret;
dma_async_issue_pending(pair->dma_chan[IN]);
@@ -116,8 +114,8 @@ static int fsl_asrc_dma_trigger(struct snd_pcm_substream *substream, int cmd)
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- dmaengine_terminate_all(pair->dma_chan[OUT]);
- dmaengine_terminate_all(pair->dma_chan[IN]);
+ dmaengine_terminate_async(pair->dma_chan[OUT]);
+ dmaengine_terminate_async(pair->dma_chan[IN]);
break;
default:
return -EINVAL;
@@ -126,39 +124,56 @@ static int fsl_asrc_dma_trigger(struct snd_pcm_substream *substream, int cmd)
return 0;
}
-static int fsl_asrc_dma_hw_params(struct snd_pcm_substream *substream,
+static int fsl_asrc_dma_hw_params(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
enum dma_slave_buswidth buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ enum sdma_peripheral_type be_peripheral_type = IMX_DMATYPE_SSI;
+ struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
struct snd_dmaengine_dai_dma_data *dma_params_fe = NULL;
struct snd_dmaengine_dai_dma_data *dma_params_be = NULL;
- struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_asrc_pair *pair = runtime->private_data;
- struct fsl_asrc *asrc_priv = pair->asrc_priv;
- struct dma_slave_config config_fe, config_be;
+ struct dma_chan *tmp_chan = NULL, *be_chan = NULL;
+ struct snd_soc_component *component_be = NULL;
+ struct fsl_asrc *asrc = pair->asrc;
+ struct dma_slave_config config_fe = {}, config_be = {};
+ struct sdma_peripheral_config audio_config;
enum asrc_pair_index index = pair->index;
struct device *dev = component->dev;
+ struct device_node *of_dma_node;
int stream = substream->stream;
struct imx_dma_data *tmp_data;
struct snd_soc_dpcm *dpcm;
- struct dma_chan *tmp_chan;
struct device *dev_be;
u8 dir = tx ? OUT : IN;
dma_cap_mask_t mask;
- int ret;
+ int ret, width;
/* Fetch the Back-End dma_data from DPCM */
for_each_dpcm_be(rtd, stream, dpcm) {
struct snd_soc_pcm_runtime *be = dpcm->be;
struct snd_pcm_substream *substream_be;
- struct snd_soc_dai *dai = be->cpu_dai;
+ struct snd_soc_dai *dai_cpu = snd_soc_rtd_to_cpu(be, 0);
+ struct snd_soc_dai *dai_codec = snd_soc_rtd_to_codec(be, 0);
+ struct snd_soc_dai *dai;
if (dpcm->fe != rtd)
continue;
+ /*
+ * With audio graph card, original cpu dai is changed to codec
+ * device in backend, so if cpu dai is dummy device in backend,
+ * get the codec dai device, which is the real hardware device
+ * connected.
+ */
+ if (!snd_soc_dai_is_dummy(dai_cpu))
+ dai = dai_cpu;
+ else
+ dai = dai_codec;
+
substream_be = snd_soc_dpcm_get_substream(be, stream);
dma_params_be = snd_soc_dai_get_dma_data(dai, substream_be);
dev_be = dai->dev;
@@ -171,17 +186,16 @@ static int fsl_asrc_dma_hw_params(struct snd_pcm_substream *substream,
}
/* Override dma_data of the Front-End and config its dmaengine */
- dma_params_fe = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
- dma_params_fe->addr = asrc_priv->paddr + REG_ASRDx(!dir, index);
+ dma_params_fe = snd_soc_dai_get_dma_data(snd_soc_rtd_to_cpu(rtd, 0), substream);
+ dma_params_fe->addr = asrc->paddr + asrc->get_fifo_addr(!dir, index);
dma_params_fe->maxburst = dma_params_be->maxburst;
- pair->dma_chan[!dir] = fsl_asrc_get_dma_channel(pair, !dir);
+ pair->dma_chan[!dir] = asrc->get_dma_channel(pair, !dir);
if (!pair->dma_chan[!dir]) {
dev_err(dev, "failed to request DMA channel\n");
return -EINVAL;
}
- memset(&config_fe, 0, sizeof(config_fe));
ret = snd_dmaengine_pcm_prepare_slave_config(substream, params, &config_fe);
if (ret) {
dev_err(dev, "failed to prepare DMA config for Front-End\n");
@@ -199,30 +213,74 @@ static int fsl_asrc_dma_hw_params(struct snd_pcm_substream *substream,
dma_cap_set(DMA_SLAVE, mask);
dma_cap_set(DMA_CYCLIC, mask);
- /* Get DMA request of Back-End */
- tmp_chan = dma_request_slave_channel(dev_be, tx ? "tx" : "rx");
- tmp_data = tmp_chan->private;
- pair->dma_data.dma_request = tmp_data->dma_request;
- dma_release_channel(tmp_chan);
+ /*
+ * The Back-End device might have already requested a DMA channel,
+ * so try to reuse it first, and then request a new one upon NULL.
+ */
+ component_be = snd_soc_lookup_component_nolocked(dev_be, SND_DMAENGINE_PCM_DRV_NAME);
+ if (component_be) {
+ be_chan = soc_component_to_pcm(component_be)->chan[substream->stream];
+ tmp_chan = be_chan;
+ }
+ if (!tmp_chan) {
+ tmp_chan = dma_request_chan(dev_be, tx ? "tx" : "rx");
+ if (IS_ERR(tmp_chan)) {
+ dev_err(dev, "failed to request DMA channel for Back-End\n");
+ return -EINVAL;
+ }
+ }
- /* Get DMA request of Front-End */
- tmp_chan = fsl_asrc_get_dma_channel(pair, dir);
- tmp_data = tmp_chan->private;
- pair->dma_data.dma_request2 = tmp_data->dma_request;
- pair->dma_data.peripheral_type = tmp_data->peripheral_type;
- pair->dma_data.priority = tmp_data->priority;
- dma_release_channel(tmp_chan);
+ /*
+ * An EDMA DEV_TO_DEV channel is fixed and bound with DMA event of each
+ * peripheral, unlike SDMA channel that is allocated dynamically. So no
+ * need to configure dma_request and dma_request2, but get dma_chan of
+ * Back-End device directly via dma_request_chan.
+ */
+ if (!asrc->use_edma) {
+ /* Get DMA request of Back-End */
+ tmp_data = tmp_chan->private;
+ pair->dma_data.dma_request = tmp_data->dma_request;
+ be_peripheral_type = tmp_data->peripheral_type;
+ if (!be_chan)
+ dma_release_channel(tmp_chan);
+
+ /* Get DMA request of Front-End */
+ tmp_chan = asrc->get_dma_channel(pair, dir);
+ tmp_data = tmp_chan->private;
+ pair->dma_data.dma_request2 = tmp_data->dma_request;
+ pair->dma_data.peripheral_type = tmp_data->peripheral_type;
+ pair->dma_data.priority = tmp_data->priority;
+ dma_release_channel(tmp_chan);
+
+ of_dma_node = pair->dma_chan[!dir]->device->dev->of_node;
+ pair->dma_chan[dir] =
+ __dma_request_channel(&mask, filter, &pair->dma_data,
+ of_dma_node);
+ pair->req_dma_chan = true;
+ } else {
+ pair->dma_chan[dir] = tmp_chan;
+ /* Do not flag to release if we are reusing the Back-End one */
+ pair->req_dma_chan = !be_chan;
+ }
- pair->dma_chan[dir] = dma_request_channel(mask, filter, &pair->dma_data);
if (!pair->dma_chan[dir]) {
dev_err(dev, "failed to request DMA channel for Back-End\n");
return -EINVAL;
}
- if (asrc_priv->asrc_width == 16)
+ width = snd_pcm_format_physical_width(asrc->asrc_format);
+ if (width < 8 || width > 64)
+ return -EINVAL;
+ else if (width == 8)
+ buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE;
+ else if (width == 16)
buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
- else
+ else if (width == 24)
+ buswidth = DMA_SLAVE_BUSWIDTH_3_BYTES;
+ else if (width <= 32)
buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ else
+ buswidth = DMA_SLAVE_BUSWIDTH_8_BYTES;
config_be.direction = DMA_DEV_TO_DEV;
config_be.src_addr_width = buswidth;
@@ -230,88 +288,157 @@ static int fsl_asrc_dma_hw_params(struct snd_pcm_substream *substream,
config_be.dst_addr_width = buswidth;
config_be.dst_maxburst = dma_params_be->maxburst;
+ memset(&audio_config, 0, sizeof(audio_config));
+ config_be.peripheral_config = &audio_config;
+ config_be.peripheral_size = sizeof(audio_config);
+
+ if (tx && (be_peripheral_type == IMX_DMATYPE_SSI_DUAL ||
+ be_peripheral_type == IMX_DMATYPE_SPDIF))
+ audio_config.n_fifos_dst = 2;
+ if (!tx && (be_peripheral_type == IMX_DMATYPE_SSI_DUAL ||
+ be_peripheral_type == IMX_DMATYPE_SPDIF))
+ audio_config.n_fifos_src = 2;
+
if (tx) {
- config_be.src_addr = asrc_priv->paddr + REG_ASRDO(index);
+ config_be.src_addr = asrc->paddr + asrc->get_fifo_addr(OUT, index);
config_be.dst_addr = dma_params_be->addr;
} else {
- config_be.dst_addr = asrc_priv->paddr + REG_ASRDI(index);
+ config_be.dst_addr = asrc->paddr + asrc->get_fifo_addr(IN, index);
config_be.src_addr = dma_params_be->addr;
}
ret = dmaengine_slave_config(pair->dma_chan[dir], &config_be);
if (ret) {
dev_err(dev, "failed to config DMA channel for Back-End\n");
+ if (pair->req_dma_chan)
+ dma_release_channel(pair->dma_chan[dir]);
return ret;
}
- snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
-
return 0;
}
-static int fsl_asrc_dma_hw_free(struct snd_pcm_substream *substream)
+static int fsl_asrc_dma_hw_free(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_asrc_pair *pair = runtime->private_data;
+ u8 dir = tx ? OUT : IN;
- snd_pcm_set_runtime_buffer(substream, NULL);
-
- if (pair->dma_chan[IN])
- dma_release_channel(pair->dma_chan[IN]);
+ if (pair->dma_chan[!dir])
+ dma_release_channel(pair->dma_chan[!dir]);
- if (pair->dma_chan[OUT])
- dma_release_channel(pair->dma_chan[OUT]);
+ /* release dev_to_dev chan if we aren't reusing the Back-End one */
+ if (pair->dma_chan[dir] && pair->req_dma_chan)
+ dma_release_channel(pair->dma_chan[dir]);
- pair->dma_chan[IN] = NULL;
- pair->dma_chan[OUT] = NULL;
+ pair->dma_chan[!dir] = NULL;
+ pair->dma_chan[dir] = NULL;
return 0;
}
-static int fsl_asrc_dma_startup(struct snd_pcm_substream *substream)
+static int fsl_asrc_dma_startup(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
- struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
+ struct snd_dmaengine_dai_dma_data *dma_data;
struct device *dev = component->dev;
- struct fsl_asrc *asrc_priv = dev_get_drvdata(dev);
+ struct fsl_asrc *asrc = dev_get_drvdata(dev);
struct fsl_asrc_pair *pair;
+ struct dma_chan *tmp_chan = NULL;
+ u8 dir = tx ? OUT : IN;
+ bool release_pair = true;
+ int ret = 0;
- pair = kzalloc(sizeof(struct fsl_asrc_pair), GFP_KERNEL);
+ ret = snd_pcm_hw_constraint_integer(substream->runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+ if (ret < 0) {
+ dev_err(dev, "failed to set pcm hw params periods\n");
+ return ret;
+ }
+
+ pair = kzalloc(sizeof(*pair) + asrc->pair_priv_size, GFP_KERNEL);
if (!pair)
return -ENOMEM;
- pair->asrc_priv = asrc_priv;
+ pair->asrc = asrc;
+ pair->private = (void *)pair + sizeof(struct fsl_asrc_pair);
runtime->private_data = pair;
- snd_pcm_hw_constraint_integer(substream->runtime,
- SNDRV_PCM_HW_PARAM_PERIODS);
+ /* Request a dummy pair, which will be released later.
+ * Request pair function needs channel num as input, for this
+ * dummy pair, we just request "1" channel temporarily.
+ */
+ ret = asrc->request_pair(1, pair);
+ if (ret < 0) {
+ dev_err(dev, "failed to request asrc pair\n");
+ goto req_pair_err;
+ }
+
+ /* Request a dummy dma channel, which will be released later. */
+ tmp_chan = asrc->get_dma_channel(pair, dir);
+ if (!tmp_chan) {
+ dev_err(dev, "failed to get dma channel\n");
+ ret = -EINVAL;
+ goto dma_chan_err;
+ }
+
+ dma_data = snd_soc_dai_get_dma_data(snd_soc_rtd_to_cpu(rtd, 0), substream);
+
+ /* Refine the snd_imx_hardware according to caps of DMA. */
+ ret = snd_dmaengine_pcm_refine_runtime_hwparams(substream,
+ dma_data,
+ &snd_imx_hardware,
+ tmp_chan);
+ if (ret < 0) {
+ dev_err(dev, "failed to refine runtime hwparams\n");
+ goto out;
+ }
+
+ release_pair = false;
snd_soc_set_runtime_hwparams(substream, &snd_imx_hardware);
- return 0;
+out:
+ dma_release_channel(tmp_chan);
+
+dma_chan_err:
+ asrc->release_pair(pair);
+
+req_pair_err:
+ if (release_pair)
+ kfree(pair);
+
+ return ret;
}
-static int fsl_asrc_dma_shutdown(struct snd_pcm_substream *substream)
+static int fsl_asrc_dma_shutdown(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_asrc_pair *pair = runtime->private_data;
- struct fsl_asrc *asrc_priv;
+ struct fsl_asrc *asrc;
if (!pair)
return 0;
- asrc_priv = pair->asrc_priv;
+ asrc = pair->asrc;
- if (asrc_priv->pair[pair->index] == pair)
- asrc_priv->pair[pair->index] = NULL;
+ if (asrc->pair[pair->index] == pair)
+ asrc->pair[pair->index] = NULL;
kfree(pair);
return 0;
}
-static snd_pcm_uframes_t fsl_asrc_dma_pcm_pointer(struct snd_pcm_substream *substream)
+static snd_pcm_uframes_t
+fsl_asrc_dma_pcm_pointer(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_asrc_pair *pair = runtime->private_data;
@@ -319,22 +446,12 @@ static snd_pcm_uframes_t fsl_asrc_dma_pcm_pointer(struct snd_pcm_substream *subs
return bytes_to_frames(substream->runtime, pair->pos);
}
-static const struct snd_pcm_ops fsl_asrc_dma_pcm_ops = {
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = fsl_asrc_dma_hw_params,
- .hw_free = fsl_asrc_dma_hw_free,
- .trigger = fsl_asrc_dma_trigger,
- .open = fsl_asrc_dma_startup,
- .close = fsl_asrc_dma_shutdown,
- .pointer = fsl_asrc_dma_pcm_pointer,
-};
-
-static int fsl_asrc_dma_pcm_new(struct snd_soc_pcm_runtime *rtd)
+static int fsl_asrc_dma_pcm_new(struct snd_soc_component *component,
+ struct snd_soc_pcm_runtime *rtd)
{
struct snd_card *card = rtd->card->snd_card;
- struct snd_pcm_substream *substream;
struct snd_pcm *pcm = rtd->pcm;
- int ret, i;
+ int ret;
ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
if (ret) {
@@ -342,48 +459,19 @@ static int fsl_asrc_dma_pcm_new(struct snd_soc_pcm_runtime *rtd)
return ret;
}
- for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_LAST; i++) {
- substream = pcm->streams[i].substream;
- if (!substream)
- continue;
-
- ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->card->dev,
- FSL_ASRC_DMABUF_SIZE, &substream->dma_buffer);
- if (ret) {
- dev_err(card->dev, "failed to allocate DMA buffer\n");
- goto err;
- }
- }
-
- return 0;
-
-err:
- if (--i == 0 && pcm->streams[i].substream)
- snd_dma_free_pages(&pcm->streams[i].substream->dma_buffer);
-
- return ret;
-}
-
-static void fsl_asrc_dma_pcm_free(struct snd_pcm *pcm)
-{
- struct snd_pcm_substream *substream;
- int i;
-
- for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_LAST; i++) {
- substream = pcm->streams[i].substream;
- if (!substream)
- continue;
-
- snd_dma_free_pages(&substream->dma_buffer);
- substream->dma_buffer.area = NULL;
- substream->dma_buffer.addr = 0;
- }
+ return snd_pcm_set_fixed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
+ card->dev, FSL_ASRC_DMABUF_SIZE);
}
struct snd_soc_component_driver fsl_asrc_component = {
.name = DRV_NAME,
- .ops = &fsl_asrc_dma_pcm_ops,
- .pcm_new = fsl_asrc_dma_pcm_new,
- .pcm_free = fsl_asrc_dma_pcm_free,
+ .hw_params = fsl_asrc_dma_hw_params,
+ .hw_free = fsl_asrc_dma_hw_free,
+ .trigger = fsl_asrc_dma_trigger,
+ .open = fsl_asrc_dma_startup,
+ .close = fsl_asrc_dma_shutdown,
+ .pointer = fsl_asrc_dma_pcm_pointer,
+ .pcm_construct = fsl_asrc_dma_pcm_new,
+ .legacy_dai_naming = 1,
};
EXPORT_SYMBOL_GPL(fsl_asrc_component);
generated by cgit (git 2.34.1) at 2025-12-26 06:02:04 +0000