1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * linux/sound/arm/pxa2xx-pcm.c -- ALSA PCM interface for the Intel PXA2xx chip 4 * 5 * Author: Nicolas Pitre 6 * Created: Nov 30, 2004 7 * Copyright: (C) 2004 MontaVista Software, Inc. 8 */ 9 10 #include <linux/dma-mapping.h> 11 #include <linux/module.h> 12 #include <linux/dmaengine.h> 13 #include <linux/of.h> 14 15 #include <sound/core.h> 16 #include <sound/soc.h> 17 #include <sound/pxa2xx-lib.h> 18 #include <sound/dmaengine_pcm.h> 19 20 static const struct snd_soc_component_driver pxa2xx_soc_platform = { 21 .pcm_construct = pxa2xx_soc_pcm_new, 22 .pcm_destruct = pxa2xx_soc_pcm_free, 23 .open = pxa2xx_soc_pcm_open, 24 .close = pxa2xx_soc_pcm_close, 25 .hw_params = pxa2xx_soc_pcm_hw_params, 26 .hw_free = pxa2xx_soc_pcm_hw_free, 27 .prepare = pxa2xx_soc_pcm_prepare, 28 .trigger = pxa2xx_soc_pcm_trigger, 29 .pointer = pxa2xx_soc_pcm_pointer, 30 .mmap = pxa2xx_soc_pcm_mmap, 31 }; 32 33 static int pxa2xx_soc_platform_probe(struct platform_device *pdev) 34 { 35 return devm_snd_soc_register_component(&pdev->dev, &pxa2xx_soc_platform, 36 NULL, 0); 37 } 38 39 static struct platform_driver pxa_pcm_driver = { 40 .driver = { 41 .name = "pxa-pcm-audio", 42 }, 43 44 .probe = pxa2xx_soc_platform_probe, 45 }; 46 47 module_platform_driver(pxa_pcm_driver); 48 49 MODULE_AUTHOR("Nicolas Pitre"); 50 MODULE_DESCRIPTION("Intel PXA2xx PCM DMA module"); 51 MODULE_LICENSE("GPL"); 52 MODULE_ALIAS("platform:pxa-pcm-audio"); 53