LXR linux/sound/soc/rockchip/rockchip

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright (c) 2018 Rockchip Electronics Co. Ltd.
   4 */
   5
   6#include <linux/device.h>
   7#include <linux/init.h>
   8#include <linux/module.h>
   9
  10#include <sound/core.h>
  11#include <sound/pcm.h>
  12#include <sound/soc.h>
  13#include <sound/dmaengine_pcm.h>
  14
  15#include "rockchip_pcm.h"
  16
  17static const struct snd_pcm_hardware snd_rockchip_hardware = {
  18        .info                   = SNDRV_PCM_INFO_MMAP |
  19                                  SNDRV_PCM_INFO_MMAP_VALID |
  20                                  SNDRV_PCM_INFO_PAUSE |
  21                                  SNDRV_PCM_INFO_RESUME |
  22                                  SNDRV_PCM_INFO_INTERLEAVED,
  23        .period_bytes_min       = 32,
  24        .period_bytes_max       = 8192,
  25        .periods_min            = 1,
  26        .periods_max            = 52,
  27        .buffer_bytes_max       = 64 * 1024,
  28        .fifo_size              = 32,
  29};
  30
  31static const struct snd_dmaengine_pcm_config rk_dmaengine_pcm_config = {
  32        .pcm_hardware = &snd_rockchip_hardware,
  33        .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
  34        .prealloc_buffer_size = 32 * 1024,
  35};
  36
  37int rockchip_pcm_platform_register(struct device *dev)
  38{
  39        return devm_snd_dmaengine_pcm_register(dev, &rk_dmaengine_pcm_config,
  40                SND_DMAENGINE_PCM_FLAG_COMPAT);
  41}
  42EXPORT_SYMBOL_GPL(rockchip_pcm_platform_register);
  43
  44MODULE_LICENSE("GPL v2");
  45