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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.c120
1 files changed, 86 insertions, 34 deletions
diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c
index 01052a0808b0..d6146de9acd2 100644
--- a/sound/soc/fsl/fsl_asrc_dma.c
+++ b/sound/soc/fsl/fsl_asrc_dma.c
@@ -16,13 +16,11 @@
#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]);
@@ -126,7 +124,8 @@ 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;
@@ -134,7 +133,6 @@ static int fsl_asrc_dma_hw_params(struct snd_pcm_substream *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;
@@ -249,7 +247,8 @@ static int fsl_asrc_dma_hw_params(struct snd_pcm_substream *substream,
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)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_asrc_pair *pair = runtime->private_data;
@@ -268,14 +267,27 @@ static int fsl_asrc_dma_hw_free(struct snd_pcm_substream *substream)
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)
{
+ bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
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_pair *pair;
+ struct dma_chan *tmp_chan = NULL;
+ u8 dir = tx ? OUT : IN;
+ bool release_pair = true;
+ int ret = 0;
+
+ 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(struct fsl_asrc_pair), GFP_KERNEL);
if (!pair)
@@ -285,14 +297,54 @@ static int fsl_asrc_dma_startup(struct snd_pcm_substream *substream)
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 = fsl_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 = fsl_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(rtd->cpu_dai, 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:
+ fsl_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;
@@ -311,7 +363,9 @@ static int fsl_asrc_dma_shutdown(struct snd_pcm_substream *substream)
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;
@@ -319,17 +373,8 @@ 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;
@@ -364,7 +409,8 @@ err:
return ret;
}
-static void fsl_asrc_dma_pcm_free(struct snd_pcm *pcm)
+static void fsl_asrc_dma_pcm_free(struct snd_soc_component *component,
+ struct snd_pcm *pcm)
{
struct snd_pcm_substream *substream;
int i;
@@ -382,8 +428,14 @@ static void fsl_asrc_dma_pcm_free(struct snd_pcm *pcm)
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,
+ .ioctl = snd_soc_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,
+ .pcm_construct = fsl_asrc_dma_pcm_new,
+ .pcm_destruct = fsl_asrc_dma_pcm_free,
};
EXPORT_SYMBOL_GPL(fsl_asrc_component);
generated by cgit (git 2.34.1) at 2024-05-08 09:28:53 +0000