1/* 2 * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module 3 * 4 * Copyright (C) 2008 Bluewater Systems Ltd 5 * Author: Ryan Mallon <ryan@bluewatersys.com> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 * 12 */ 13 14#include <linux/platform_device.h> 15#include <sound/core.h> 16#include <sound/pcm.h> 17#include <sound/soc.h> 18#include <sound/soc-dapm.h> 19 20#include <asm/mach-types.h> 21#include <mach/hardware.h> 22 23#include "../codecs/tlv320aic23.h" 24#include "ep93xx-pcm.h" 25#include "ep93xx-i2s.h" 26 27#define CODEC_CLOCK 5644800 28 29static int snappercl15_hw_params(struct snd_pcm_substream *substream, 30 struct snd_pcm_hw_params *params) 31{ 32 struct snd_soc_pcm_runtime *rtd = substream->private_data; 33 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; 34 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; 35 int err; 36 37 err = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | 38 SND_SOC_DAIFMT_NB_IF | 39 SND_SOC_DAIFMT_CBS_CFS); 40 41 err = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | 42 SND_SOC_DAIFMT_NB_IF | 43 SND_SOC_DAIFMT_CBS_CFS); 44 if (err) 45 return err; 46 47 err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, 48 SND_SOC_CLOCK_IN); 49 if (err) 50 return err; 51 52 err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK, 53 SND_SOC_CLOCK_OUT); 54 if (err) 55 return err; 56 57 return 0; 58} 59 60static struct snd_soc_ops snappercl15_ops = { 61 .hw_params = snappercl15_hw_params, 62}; 63 64static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { 65 SND_SOC_DAPM_HP("Headphone Jack", NULL), 66 SND_SOC_DAPM_LINE("Line In", NULL), 67 SND_SOC_DAPM_MIC("Mic Jack", NULL), 68}; 69 70static const struct snd_soc_dapm_route audio_map[] = { 71 {"Headphone Jack", NULL, "LHPOUT"}, 72 {"Headphone Jack", NULL, "RHPOUT"}, 73 74 {"LLINEIN", NULL, "Line In"}, 75 {"RLINEIN", NULL, "Line In"}, 76 77 {"MICIN", NULL, "Mic Jack"}, 78}; 79 80static int snappercl15_tlv320aic23_init(struct snd_soc_codec *codec) 81{ 82 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, 83 ARRAY_SIZE(tlv320aic23_dapm_widgets)); 84 85 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 86 return 0; 87} 88 89static struct snd_soc_dai_link snappercl15_dai = { 90 .name = "tlv320aic23", 91 .stream_name = "AIC23", 92 .cpu_dai = &ep93xx_i2s_dai, 93 .codec_dai = &tlv320aic23_dai, 94 .init = snappercl15_tlv320aic23_init, 95 .ops = &snappercl15_ops, 96}; 97 98static struct snd_soc_card snd_soc_snappercl15 = { 99 .name = "Snapper CL15", 100 .platform = &ep93xx_soc_platform, 101 .dai_link = &snappercl15_dai, 102 .num_links = 1, 103}; 104 105static struct snd_soc_device snappercl15_snd_devdata = { 106 .card = &snd_soc_snappercl15, 107 .codec_dev = &soc_codec_dev_tlv320aic23, 108}; 109 110static struct platform_device *snappercl15_snd_device; 111 112static int __init snappercl15_init(void) 113{ 114 int ret; 115 116 if (!machine_is_snapper_cl15()) 117 return -ENODEV; 118 119 ret = ep93xx_i2s_acquire(EP93XX_SYSCON_DEVCFG_I2SONAC97, 120 EP93XX_SYSCON_I2SCLKDIV_ORIDE | 121 EP93XX_SYSCON_I2SCLKDIV_SPOL); 122 if (ret) 123 return ret; 124 125 snappercl15_snd_device = platform_device_alloc("soc-audio", -1); 126 if (!snappercl15_snd_device) 127 return -ENOMEM; 128 129 platform_set_drvdata(snappercl15_snd_device, &snappercl15_snd_devdata); 130 snappercl15_snd_devdata.dev = &snappercl15_snd_device->dev; 131 ret = platform_device_add(snappercl15_snd_device); 132 if (ret) 133 platform_device_put(snappercl15_snd_device); 134 135 return ret; 136} 137 138static void __exit snappercl15_exit(void) 139{ 140 platform_device_unregister(snappercl15_snd_device); 141 ep93xx_i2s_release(); 142} 143 144module_init(snappercl15_init); 145module_exit(snappercl15_exit); 146 147MODULE_AUTHOR("Ryan Mallon <ryan@bluewatersys.com>"); 148MODULE_DESCRIPTION("ALSA SoC Snapper CL15"); 149MODULE_LICENSE("GPL"); 150