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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com4 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>5 */6 7#include <linux/module.h>8#include <sound/core.h>9#include <sound/pcm.h>10#include <sound/pcm_params.h>11#include <sound/soc.h>12#include <sound/dmaengine_pcm.h>13 14#include "udma-pcm.h"15 16static const struct snd_pcm_hardware udma_pcm_hardware = {17 .info = SNDRV_PCM_INFO_MMAP |18 SNDRV_PCM_INFO_MMAP_VALID |19 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |20 SNDRV_PCM_INFO_NO_PERIOD_WAKEUP |21 SNDRV_PCM_INFO_INTERLEAVED,22 .buffer_bytes_max = SIZE_MAX,23 .period_bytes_min = 32,24 .period_bytes_max = SZ_64K,25 .periods_min = 2,26 .periods_max = UINT_MAX,27};28 29static const struct snd_dmaengine_pcm_config udma_dmaengine_pcm_config = {30 .pcm_hardware = &udma_pcm_hardware,31 .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,32};33 34int udma_pcm_platform_register(struct device *dev)35{36 return devm_snd_dmaengine_pcm_register(dev, &udma_dmaengine_pcm_config,37 0);38}39EXPORT_SYMBOL_GPL(udma_pcm_platform_register);40 41MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");42MODULE_DESCRIPTION("UDMA PCM ASoC platform driver");43MODULE_LICENSE("GPL v2");44