1/* 2 * File: sound/soc/blackfin/bf5xx-ad1836.c 3 * Author: Barry Song <Barry.Song@analog.com> 4 * 5 * Created: Aug 4 2009 6 * Description: Board driver for ad1836 sound chip 7 * 8 * Bugs: Enter bugs at http://blackfin.uclinux.org/ 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 */ 16 17#include <linux/module.h> 18#include <linux/moduleparam.h> 19#include <linux/device.h> 20#include <sound/core.h> 21#include <sound/pcm.h> 22#include <sound/soc.h> 23#include <sound/soc-dapm.h> 24#include <sound/pcm_params.h> 25 26#include <asm/blackfin.h> 27#include <asm/cacheflush.h> 28#include <asm/irq.h> 29#include <asm/dma.h> 30#include <asm/portmux.h> 31 32#include "../codecs/ad1836.h" 33#include "bf5xx-sport.h" 34 35#include "bf5xx-tdm-pcm.h" 36#include "bf5xx-tdm.h" 37 38static struct snd_soc_card bf5xx_ad1836; 39 40static int bf5xx_ad1836_startup(struct snd_pcm_substream *substream) 41{ 42 struct snd_soc_pcm_runtime *rtd = substream->private_data; 43 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; 44 45 cpu_dai->private_data = sport_handle; 46 return 0; 47} 48 49static int bf5xx_ad1836_hw_params(struct snd_pcm_substream *substream, 50 struct snd_pcm_hw_params *params) 51{ 52 struct snd_soc_pcm_runtime *rtd = substream->private_data; 53 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; 54 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; 55 unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7}; 56 int ret = 0; 57 /* set cpu DAI configuration */ 58 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A | 59 SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM); 60 if (ret < 0) 61 return ret; 62 63 /* set codec DAI configuration */ 64 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A | 65 SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM); 66 if (ret < 0) 67 return ret; 68 69 /* set cpu DAI channel mapping */ 70 ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map), 71 channel_map, ARRAY_SIZE(channel_map), channel_map); 72 if (ret < 0) 73 return ret; 74 75 return 0; 76} 77 78static struct snd_soc_ops bf5xx_ad1836_ops = { 79 .startup = bf5xx_ad1836_startup, 80 .hw_params = bf5xx_ad1836_hw_params, 81}; 82 83static struct snd_soc_dai_link bf5xx_ad1836_dai = { 84 .name = "ad1836", 85 .stream_name = "AD1836", 86 .cpu_dai = &bf5xx_tdm_dai, 87 .codec_dai = &ad1836_dai, 88 .ops = &bf5xx_ad1836_ops, 89}; 90 91static struct snd_soc_card bf5xx_ad1836 = { 92 .name = "bf5xx_ad1836", 93 .platform = &bf5xx_tdm_soc_platform, 94 .dai_link = &bf5xx_ad1836_dai, 95 .num_links = 1, 96}; 97 98static struct snd_soc_device bf5xx_ad1836_snd_devdata = { 99 .card = &bf5xx_ad1836, 100 .codec_dev = &soc_codec_dev_ad1836, 101}; 102 103static struct platform_device *bfxx_ad1836_snd_device; 104 105static int __init bf5xx_ad1836_init(void) 106{ 107 int ret; 108 109 bfxx_ad1836_snd_device = platform_device_alloc("soc-audio", -1); 110 if (!bfxx_ad1836_snd_device) 111 return -ENOMEM; 112 113 platform_set_drvdata(bfxx_ad1836_snd_device, &bf5xx_ad1836_snd_devdata); 114 bf5xx_ad1836_snd_devdata.dev = &bfxx_ad1836_snd_device->dev; 115 ret = platform_device_add(bfxx_ad1836_snd_device); 116 117 if (ret) 118 platform_device_put(bfxx_ad1836_snd_device); 119 120 return ret; 121} 122 123static void __exit bf5xx_ad1836_exit(void) 124{ 125 platform_device_unregister(bfxx_ad1836_snd_device); 126} 127 128module_init(bf5xx_ad1836_init); 129module_exit(bf5xx_ad1836_exit); 130 131/* Module information */ 132MODULE_AUTHOR("Barry Song"); 133MODULE_DESCRIPTION("ALSA SoC AD1836 board driver"); 134MODULE_LICENSE("GPL"); 135