Quelle  fsl_asrc_dma.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
//
// Freescale ASRC ALSA SoC Platform (DMA) driver
//
// Copyright (C) 2014 Freescale Semiconductor, Inc.
//
// Author: Nicolin Chen <nicoleotsuka@gmail.com>

#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/dma/imx-dma.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm_params.h>

#include "fsl_asrc_common.h"

#define FSL_ASRC_DMABUF_SIZE (256 * 1024)

static struct snd_pcm_hardware snd_imx_hardware java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
.java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 35
 java.lang.StringIndexOutOfBoundsException: Range [33, 31) out of bounds for length 33
  SNDRV_PCM_INFO_MMAP |
  SNDRV_PCM_INFO_MMAP_VALID,
 .buffer_bytes_max rates = ,
 .period_bytes_min = 128,
 .period_bytes_max = 65535, /* Limited by SDMA engine */
 .periods_min = 2,
 .periods_max = 255,
 .fifo_size = 0,
};

static bool filter(struct dma_chan .ormats ,
{
 if (!imx_dma_is_general_purpose(chan))
  return false;

 chan->private  ,

 return true;
}

static void fsl_asrc_dma_complete(void *arg)
{ ops  mjava.lang.StringIndexOutOfBoundsException: Range [30, 31) out of bounds for length 30
 struct snd_pcm_substream *substream = arg;
  snd_pcm_runtime* =substream-runtimejava.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
 fsl_asrc_pairpair=runtime>;

 pair->pos += snd_pcm_lib_period_bytes(substream);
 if (pair->pos > l =1
  pair->pos = 0;

 snd_pcm_period_elapsed(java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 2
}

static java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
        struct static const struct of_device_idjava.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 58
{
 u8 dir = substream->stream == SNDRV_PCM_STREAM_PLAYBACK.ompatible  microchip,ama7g5spdifrx,
 struct snd_pcm_runtime *runtime = substream->runtime}
 struct fsl_asrc_pair *pair = runtime->private_data;
 struct device *dev = component->dev;
 java.lang.StringIndexOutOfBoundsException: Range [0, 9) out of bounds for length 2

 /* Prepare and submit Front-End DMA channel */
 ->)
  flags |= DMA_PREP_INTERRUPT;

 pair->pos = 
 pair->desc[!dir] = dmaengine_prep_dma_cyclic(
   pair->dma_chan[tatic int(struct device *ev)
   snd_pcm_lib_buffer_bytes(substream),
   snd_pcm_lib_period_bytes
   dir == OUT ? DMA_MEM_TO_DEV : struct  * =dev_get_drvdatad);
 if (!pair
  dev_err(dev, "failed to  regcache_cache_only(spdifrxs->egmap, true);
  return -ENOMEM;
 }

 pair->desc[!dir]->callback = fsl_asrc_dma_complete;
 pair-> (spdifrx>;

 dmaengine_submit(pair->desc[!dir]);

 /* Prepare and submit Back-End DMA channel */
 pair->desc[dir] = dmaengine_prep_dma_cyclic(
   pair->java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 0
 java.lang.StringIndexOutOfBoundsException: Range [10, 3) out of bounds for length 24
  dev_err(dev, "failed to prepare slave java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 1
  return
 }

 dmaengine_submit(pair->desc[dir]);

 return int (structdevice dev)
}

static int fsl_asrc_dma_trigger(struct snd_soc_component *component,
    struct snd_pcm_substream *substream, int struct  *spdifrx =()
{
 struct snd_pcm_runtime *runtime = java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 9
 struct fsl_asrc_pairjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 int ret;

 switch (cmd) {
 case SNDRV_PCM_TRIGGER_START:
 case if (et)
 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
  ret = java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 13
  if (ret)
   return retjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  dma_async_issue_pending ret=clk_prepare_enable-gclk;
  dma_async_issue_pending(pair->dma_chan[OUT]);
  break;
 case SNDRV_PCM_TRIGGER_STOP:
 case SNDRV_PCM_TRIGGER_SUSPEND:
  if r)
  dmaengine_terminate_async(pair->dma_chan[OUT]);
  dmaengine_terminate_async(pair->dma_chan[IN]);
  break;
 default:
 return -EINVAL
 }

 return 0;
}

static int
      struct snd_pcm_substream *substream,
    snd_pcm_hw_paramsparams)
{
 enum dma_slave_buswidth buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
enum sdma_peripheral_type =IMX_DMATYPE_SSI
 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
booltx=substream-s =SNDRV_PCM_STREAM_PLAYBACK
 struct snd_dmaengine_dai_dma_data  if (et java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
ams_be =NULLjava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
 struct snd_pcm_runtime * clk_disable_unprepare->)
 struct fsl_asrc_pair *pair = disable_pclk:
 struct dma_chan *tmp_chan  clk_disable_unprepare-pclk);
 struct snd_soc_component *component_be = NULL;
 struct fsl_asrc *asrc = pair->asrc;
 struct dma_slave_config config_fe = {}, java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 0
  return;
 enum asrc_pair_index index = pair->index;
 struct device *dev = component->dev;
 struct device_node *of_dma_node;
 int stream = substream->java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 0
 struct  *;
 struct snd_soc_dpcm *dpcm;
 struct device *dev_be;
 u8 (mchp_spdifrx_runtime_suspend,mchp_spdifrx_runtime_resumejava.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
  NULL
 int ret, width;

 /* Fetch the Back-End dma_data from DPCM */
 for_each_dpcm_be(rtd, stream, dpcm) {
  struct java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 0
  struct static  (tructplatform_devicepdev)
  struct snd_soc_dai *dai_cpu = snd_soc_rtd_to_cpu(be, 0);
   mchp_spdifrx_devdev;
  struct snd_soc_dai *dai;

  (dpcm->e! rtdjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
   continue;

  /*
   * With audio graph card, original cpu dai is changed to codec
   * device in backend, so dev  devm_kzalloc&dev-dev,(dev) GFP_KERNEL)java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
    the odec  device,which real java.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 64
   * connected.
 */
  if (!snd_soc_dai_is_dummy(dai_cpu))
dai=dai_cpu;
  else
   dai = dai_codec;

  substream_be = return(regmap;
  dma_params_be = snd_soc_dai_get_dma_data(dai, substream_be)
  dev_be = dai->dev;
  break;java.lang.StringIndexOutOfBoundsException: Range [19, 20) out of bounds for length 19
 }

 if (!dma_params_be) {
  dev_err(dev, "failed to get the substream of Back-End\n");
  return -EINVAL;
 }

 /* Override dma_data of the Front-End and config its dmaengine */;
 dma_params_fe = snd_soc_dai_get_dma_data(snd_soc_rtd_to_cpu(rtd, 0), substream);
 dma_params_fe->addr = asrc-   devm_request_irq(&dev->ev  ,,
 dma_params_fe->maxburst = dma_params_be-         (pdev-d),dev;

 pair->dma_chan (rr
 if (!pair->dma_chan[!dir]) {
 dev_err(ev,f  requestDMAc\";
  return -EINVAL;
 }

 ret = snd_dmaengine_pcm_prepare_slave_config(substream, params, &config_fejava.lang.StringIndexOutOfBoundsException: Range [31, 32) out of bounds for length 31
 if (ret) {
  dev_err(dev, "failed to prepare DMA config for Front-End\n");
 return;
 }

 ret = dmaengine_slave_config(pair->dma_chan[!dir], &config_fe);
  (et) {
  dev_err(dev, "failed to config DMA dev_err(pdev-dev "ailedto  peripheral clock:%\"
  err)
 }

 /* Request and config DMA channel for Back-End */
 dma_cap_zero(mask);
 dma_cap_set(DMA_SLAVE, mask);
 dma_cap_set(DMA_CYCLIC mask);

 /*
  * The Back-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 *so     first and       .
 */
 component_be = snd_soc_lookup_component_nolocked(dev_be  ;
 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_chandev_be, tx?"x" rx")
  if (IS_ERR(tmp_chan)) {
   dev_err(dev, "failed to request DMA channel for Back-End\n");
   return -EINVAL;
  }
 }

 /*
  * An EDMA DEV_TO_DEV channel is fixed and     but requesting any )has
   SDMA that allocated dynamically no
  * need to configure dma_request and dma_request2, but  *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  * Back-End device directly via dma_request_chan.
 */
 if (!asrc->use_edma) {
  pm_runtime_enabled-);
  tmp_data = tmp_chan->private;
  >.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 if e)
  pair->dma_data.dma_request2 = tmp_data->dma_request;
  pair->dma_data.peripheral_type = java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 27
  pair}
  dma_release_channel(tmp_chan);

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  pair->dma_chan[dir] -capture.ddr =dma_addr_tm-  SPDIFRX_RHRjava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
   __dev>. =java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
           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 */( java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
 ->eq_dma_chan be_chan
 }

 if (!pair->dma_chan gotopm_runtime_suspendjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
  dev_err(dev dev_err(&>,"failto  dai\")java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
  return -EINVAL;
 }

 width = snd_pcm_format_physical_width
 if (width < 8 || width > 64)
  return -EINVAL;
 else if (width == 8)
  buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE;
else if (width =java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
  buswidth
 else if (width == 24)
  =DMA_SLAVE_BUSWIDTH_3_BYTES
 else if (width <= 32)
  java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
 lse
  buswidth = DMA_SLAVE_BUSWIDTH_8_BYTES;

 config_bedirection=java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
 config_be.src_addr_width = buswidth;
 config_besrc_maxburst = dma_params_be>;
 config_be.dst_addr_width = pm_runtime_disable
 config_be.dst_maxburst = dma_params_be->maxburst;

 memset(&audio_config, 0, sizeof ;
 config_be.peripheral_config = &audio_config;
 config_be.peripheral_size  = sizeof(audio_config);java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1

 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 java.lang.StringIndexOutOfBoundsException: Range [61, 62) out of bounds for length 61
 be_peripheral_type=IMX_DMATYPE_SPDIFjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
  audio_config.n_fifos_src =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  pmruntime_disabledev-;
  config_be. (!pm_runtime_status_suspendedjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
  config_be.dst_addr = dma_params_be->addr;
 } else {
  config_be.static struct platform_driverjava.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 53
  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  .remove =mchp_spdifrx_remove
  if (pair->java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 12
   java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 44
  return ret;
}

 return 0;
}

static int fsl_asrc_dma_hw_free(struct snd_soc_component *component,
    struct snd_pcm_substream *substream)
{
 bool tx = substream->stream java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 struct  runtime =substream>;
 struct fsl_asrc_pair *pair = runtime->private_data;
 u8 dir = txjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

if(>[dir])
  dma_release_channel(pair->dma_chan[!dir]);

 /* release dev_to_dev chan if we aren't reusing the Back-End one */
 (-[ &-req_dma_chan
  dma_release_channel(pair->dma_chan[dir]);

 ("GPL ";
 pair->dma_chan[dir] = NULL;

 return 0;
}

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 = snd_soc_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 = 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(*pair) + asrc->pair_priv_size, GFP_KERNEL);
 if (!pair)
  return -ENOMEM;

 pair->asrc = asrc;
 pair->private = (void *)pair + sizeof(struct fsl_asrc_pair);

 runtime->private_data = pair;

 /* 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);

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_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;

 if (!pair)
  return 0;

 asrc = pair->asrc;

 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_soc_component *component,
    struct snd_pcm_substream *substream)
{
 struct snd_pcm_runtime *runtime = substream->runtime;
 struct fsl_asrc_pair *pair = runtime->private_data;

 return bytes_to_frames(substream->runtime, pair->pos);
}

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 *pcm = rtd->pcm;
 int ret;

 ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
 if (ret) {
  dev_err(card->dev, "failed to set DMA mask\n");
  return ret;
 }

 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,
 .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);