diff options
Diffstat (limited to 'sound/soc/fsl/fsl_asrc_dma.c')
| -rw-r--r-- | sound/soc/fsl/fsl_asrc_dma.c | 120 |
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); |