// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com * Author: Peter Ujfalusi <peter.ujfalusi@ti.com> */ #include <linux/module.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/dmaengine_pcm.h> #include "udma-pcm.h" static const struct snd_pcm_hardware udma_pcm_hardware = { .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME | SNDRV_PCM_INFO_NO_PERIOD_WAKEUP | SNDRV_PCM_INFO_INTERLEAVED, .buffer_bytes_max = SIZE_MAX, .period_bytes_min = 32, .period_bytes_max = SZ_64K, .periods_min = 2, .periods_max = UINT_MAX, }; static const struct snd_dmaengine_pcm_config udma_dmaengine_pcm_config = { .pcm_hardware = &udma_pcm_hardware, .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, }; int udma_pcm_platform_register(struct device *dev) { return devm_snd_dmaengine_pcm_register(dev, &udma_dmaengine_pcm_config, 0); } EXPORT_SYMBOL_GPL(udma_pcm_platform_register); MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>"); MODULE_DESCRIPTION("UDMA PCM ASoC platform driver"); MODULE_LICENSE("GPL v2");