1/* 2 * am3517evm.c -- ALSA SoC support for OMAP3517 / AM3517 EVM 3 * 4 * Author: Anuj Aggarwal <anuj.aggarwal@ti.com> 5 * 6 * Based on sound/soc/omap/beagle.c by Steve Sakoman 7 * 8 * Copyright (C) 2009 Texas Instruments Incorporated 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation version 2. 13 * 14 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, 15 * whether express or implied; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * General Public License for more details. 18 */ 19 20#include <linux/clk.h> 21#include <linux/platform_device.h> 22#include <sound/core.h> 23#include <sound/pcm.h> 24#include <sound/soc.h> 25#include <sound/soc-dapm.h> 26 27#include <asm/mach-types.h> 28#include <mach/hardware.h> 29#include <mach/gpio.h> 30#include <plat/mcbsp.h> 31 32#include "omap-mcbsp.h" 33#include "omap-pcm.h" 34 35#include "../codecs/tlv320aic23.h" 36 37#define CODEC_CLOCK 12000000 38 39static int am3517evm_hw_params(struct snd_pcm_substream *substream, 40 struct snd_pcm_hw_params *params) 41{ 42 struct snd_soc_pcm_runtime *rtd = substream->private_data; 43 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; 44 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; 45 int ret; 46 47 /* Set codec DAI configuration */ 48 ret = snd_soc_dai_set_fmt(codec_dai, 49 SND_SOC_DAIFMT_DSP_B | 50 SND_SOC_DAIFMT_NB_NF | 51 SND_SOC_DAIFMT_CBM_CFM); 52 if (ret < 0) { 53 printk(KERN_ERR "can't set codec DAI configuration\n"); 54 return ret; 55 } 56 57 /* Set cpu DAI configuration */ 58 ret = snd_soc_dai_set_fmt(cpu_dai, 59 SND_SOC_DAIFMT_DSP_B | 60 SND_SOC_DAIFMT_NB_NF | 61 SND_SOC_DAIFMT_CBM_CFM); 62 if (ret < 0) { 63 printk(KERN_ERR "can't set cpu DAI configuration\n"); 64 return ret; 65 } 66 67 /* Set the codec system clock for DAC and ADC */ 68 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 69 CODEC_CLOCK, SND_SOC_CLOCK_IN); 70 if (ret < 0) { 71 printk(KERN_ERR "can't set codec system clock\n"); 72 return ret; 73 } 74 75 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0, 76 SND_SOC_CLOCK_IN); 77 if (ret < 0) { 78 printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_CLKR_SRC_CLKX\n"); 79 return ret; 80 } 81 82 snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0, 83 SND_SOC_CLOCK_IN); 84 if (ret < 0) { 85 printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_FSR_SRC_FSX\n"); 86 return ret; 87 } 88 89 return 0; 90} 91 92static struct snd_soc_ops am3517evm_ops = { 93 .hw_params = am3517evm_hw_params, 94}; 95 96/* am3517evm machine dapm widgets */ 97static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = { 98 SND_SOC_DAPM_HP("Line Out", NULL), 99 SND_SOC_DAPM_LINE("Line In", NULL), 100 SND_SOC_DAPM_MIC("Mic In", NULL), 101}; 102 103static const struct snd_soc_dapm_route audio_map[] = { 104 /* Line Out connected to LLOUT, RLOUT */ 105 {"Line Out", NULL, "LOUT"}, 106 {"Line Out", NULL, "ROUT"}, 107 108 {"LLINEIN", NULL, "Line In"}, 109 {"RLINEIN", NULL, "Line In"}, 110 111 {"MICIN", NULL, "Mic In"}, 112}; 113 114static int am3517evm_aic23_init(struct snd_soc_codec *codec) 115{ 116 /* Add am3517-evm specific widgets */ 117 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets, 118 ARRAY_SIZE(tlv320aic23_dapm_widgets)); 119 120 /* Set up davinci-evm specific audio path audio_map */ 121 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 122 123 /* always connected */ 124 snd_soc_dapm_enable_pin(codec, "Line Out"); 125 snd_soc_dapm_enable_pin(codec, "Line In"); 126 snd_soc_dapm_enable_pin(codec, "Mic In"); 127 128 snd_soc_dapm_sync(codec); 129 130 return 0; 131} 132 133/* Digital audio interface glue - connects codec <--> CPU */ 134static struct snd_soc_dai_link am3517evm_dai = { 135 .name = "TLV320AIC23", 136 .stream_name = "AIC23", 137 .cpu_dai = &omap_mcbsp_dai[0], 138 .codec_dai = &tlv320aic23_dai, 139 .init = am3517evm_aic23_init, 140 .ops = &am3517evm_ops, 141}; 142 143/* Audio machine driver */ 144static struct snd_soc_card snd_soc_am3517evm = { 145 .name = "am3517evm", 146 .platform = &omap_soc_platform, 147 .dai_link = &am3517evm_dai, 148 .num_links = 1, 149}; 150 151/* Audio subsystem */ 152static struct snd_soc_device am3517evm_snd_devdata = { 153 .card = &snd_soc_am3517evm, 154 .codec_dev = &soc_codec_dev_tlv320aic23, 155}; 156 157static struct platform_device *am3517evm_snd_device; 158 159static int __init am3517evm_soc_init(void) 160{ 161 int ret; 162 163 if (!machine_is_omap3517evm()) { 164 pr_err("Not OMAP3517 / AM3517 EVM!\n"); 165 return -ENODEV; 166 } 167 pr_info("OMAP3517 / AM3517 EVM SoC init\n"); 168 169 am3517evm_snd_device = platform_device_alloc("soc-audio", -1); 170 if (!am3517evm_snd_device) { 171 printk(KERN_ERR "Platform device allocation failed\n"); 172 return -ENOMEM; 173 } 174 175 platform_set_drvdata(am3517evm_snd_device, &am3517evm_snd_devdata); 176 am3517evm_snd_devdata.dev = &am3517evm_snd_device->dev; 177 *(unsigned int *)am3517evm_dai.cpu_dai->private_data = 0; /* McBSP1 */ 178 179 ret = platform_device_add(am3517evm_snd_device); 180 if (ret) 181 goto err1; 182 183 return 0; 184 185err1: 186 printk(KERN_ERR "Unable to add platform device\n"); 187 platform_device_put(am3517evm_snd_device); 188 189 return ret; 190} 191 192static void __exit am3517evm_soc_exit(void) 193{ 194 platform_device_unregister(am3517evm_snd_device); 195} 196 197module_init(am3517evm_soc_init); 198module_exit(am3517evm_soc_exit); 199 200MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>"); 201MODULE_DESCRIPTION("ALSA SoC OMAP3517 / AM3517 EVM"); 202MODULE_LICENSE("GPL v2"); 203