cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mxs-pcm.c (1162B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
      4 *
      5 * Based on sound/soc/imx/imx-pcm-dma-mx2.c
      6 */
      7
      8#include <linux/device.h>
      9#include <linux/init.h>
     10#include <linux/module.h>
     11
     12#include <sound/core.h>
     13#include <sound/pcm.h>
     14#include <sound/soc.h>
     15#include <sound/dmaengine_pcm.h>
     16
     17#include "mxs-pcm.h"
     18
     19static const struct snd_pcm_hardware snd_mxs_hardware = {
     20	.info			= SNDRV_PCM_INFO_MMAP |
     21				  SNDRV_PCM_INFO_MMAP_VALID |
     22				  SNDRV_PCM_INFO_PAUSE |
     23				  SNDRV_PCM_INFO_RESUME |
     24				  SNDRV_PCM_INFO_INTERLEAVED |
     25				  SNDRV_PCM_INFO_HALF_DUPLEX,
     26	.period_bytes_min	= 32,
     27	.period_bytes_max	= 8192,
     28	.periods_min		= 1,
     29	.periods_max		= 52,
     30	.buffer_bytes_max	= 64 * 1024,
     31	.fifo_size		= 32,
     32};
     33
     34static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {
     35	.pcm_hardware = &snd_mxs_hardware,
     36	.prealloc_buffer_size = 64 * 1024,
     37};
     38
     39int mxs_pcm_platform_register(struct device *dev)
     40{
     41	return devm_snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
     42		SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);
     43}
     44EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);
     45
     46MODULE_LICENSE("GPL");