diff options
Diffstat (limited to '')
-rw-r--r-- | sound/soc/fsl/fsl_asrc_dma.c | 184 |
1 files changed, 95 insertions, 89 deletions
diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c index ece130f59d15..3b81a465814a 100644 --- a/sound/soc/fsl/fsl_asrc_dma.c +++ b/sound/soc/fsl/fsl_asrc_dma.c @@ -8,11 +8,11 @@ #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) @@ -114,8 +114,8 @@ static int fsl_asrc_dma_trigger(struct snd_soc_component *component, 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; @@ -129,30 +129,34 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component, 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 = asoc_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_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 = asoc_rtd_to_cpu(be, 0); if (dpcm->fe != rtd) continue; @@ -169,17 +173,16 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component, } /* 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(asoc_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"); @@ -198,31 +201,48 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component, dma_cap_set(DMA_CYCLIC, mask); /* + * 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_slave_channel(dev_be, tx ? "tx" : "rx"); + + /* * 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 via - * dma_request_slave_channel directly with dma name of Front-End device + * need to configure dma_request and dma_request2, but get dma_chan of + * Back-End device directly via dma_request_slave_channel. */ - if (!asrc_priv->soc->use_edma) { + if (!asrc->use_edma) { /* 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); + be_peripheral_type = tmp_data->peripheral_type; + if (!be_chan) + dma_release_channel(tmp_chan); /* Get DMA request of Front-End */ - tmp_chan = fsl_asrc_get_dma_channel(pair, dir); + 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); + __dma_request_channel(&mask, filter, &pair->dma_data, + of_dma_node); + pair->req_dma_chan = true; } else { - pair->dma_chan[dir] = - fsl_asrc_get_dma_channel(pair, dir); + 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; } if (!pair->dma_chan[dir]) { @@ -230,10 +250,19 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component, 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; @@ -241,41 +270,53 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component, 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_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; } @@ -284,11 +325,11 @@ 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_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); struct snd_pcm_runtime *runtime = substream->runtime; 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; @@ -302,11 +343,12 @@ static int fsl_asrc_dma_startup(struct snd_soc_component *component, return ret; } - pair = kzalloc(sizeof(struct fsl_asrc_pair), GFP_KERNEL); + 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; @@ -314,21 +356,21 @@ static int fsl_asrc_dma_startup(struct snd_soc_component *component, * 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); + 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 = fsl_asrc_get_dma_channel(pair, dir); + 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(rtd->cpu_dai, substream); + dma_data = snd_soc_dai_get_dma_data(asoc_rtd_to_cpu(rtd, 0), substream); /* Refine the snd_imx_hardware according to caps of DMA. */ ret = snd_dmaengine_pcm_refine_runtime_hwparams(substream, @@ -347,7 +389,7 @@ out: dma_release_channel(tmp_chan); dma_chan_err: - fsl_asrc_release_pair(pair); + asrc->release_pair(pair); req_pair_err: if (release_pair) @@ -361,15 +403,15 @@ static int fsl_asrc_dma_shutdown(struct snd_soc_component *component, { 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); @@ -390,9 +432,8 @@ 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) { @@ -400,43 +441,8 @@ static int fsl_asrc_dma_pcm_new(struct snd_soc_component *component, 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_soc_component *component, - 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 = { @@ -448,6 +454,6 @@ struct snd_soc_component_driver fsl_asrc_component = { .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, + .legacy_dai_naming = 1, }; EXPORT_SYMBOL_GPL(fsl_asrc_component); |