sound/soc/omap/am3517evm.c

   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
  39 static 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->codec_dai;
  44         struct snd_soc_dai *cpu_dai = rtd->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
  92 static struct snd_soc_ops am3517evm_ops = {
  93         .hw_params = am3517evm_hw_params,
  94 };
  95
  96 /* am3517evm machine dapm widgets */
  97 static 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
 103 static 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
 114 static int am3517evm_aic23_init(struct snd_soc_pcm_runtime *rtd)
 115 {
 116         struct snd_soc_codec *codec = rtd->codec;
 117         struct snd_soc_dapm_context *dapm = &codec->dapm;
 118
 119         /* Add am3517-evm specific widgets */
 120         snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
 121                                   ARRAY_SIZE(tlv320aic23_dapm_widgets));
 122
 123         /* Set up davinci-evm specific audio path audio_map */
 124         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 125
 126         /* always connected */
 127         snd_soc_dapm_enable_pin(dapm, "Line Out");
 128         snd_soc_dapm_enable_pin(dapm, "Line In");
 129         snd_soc_dapm_enable_pin(dapm, "Mic In");
 130
 131         snd_soc_dapm_sync(dapm);
 132
 133         return 0;
 134 }
 135
 136 /* Digital audio interface glue - connects codec <--> CPU */
 137 static struct snd_soc_dai_link am3517evm_dai = {
 138         .name = "TLV320AIC23",
 139         .stream_name = "AIC23",
 140         .cpu_dai_name ="omap-mcbsp-dai.0",
 141         .codec_dai_name = "tlv320aic23-hifi",
 142         .platform_name = "omap-pcm-audio",
 143         .codec_name = "tlv320aic23-codec",
 144         .init = am3517evm_aic23_init,
 145         .ops = &am3517evm_ops,
 146 };
 147
 148 /* Audio machine driver */
 149 static struct snd_soc_card snd_soc_am3517evm = {
 150         .name = "am3517evm",
 151         .dai_link = &am3517evm_dai,
 152         .num_links = 1,
 153 };
 154
 155 static struct platform_device *am3517evm_snd_device;
 156
 157 static int __init am3517evm_soc_init(void)
 158 {
 159         int ret;
 160
 161         if (!machine_is_omap3517evm())
 162                 return -ENODEV;
 163         pr_info("OMAP3517 / AM3517 EVM SoC init\n");
 164
 165         am3517evm_snd_device = platform_device_alloc("soc-audio", -1);
 166         if (!am3517evm_snd_device) {
 167                 printk(KERN_ERR "Platform device allocation failed\n");
 168                 return -ENOMEM;
 169         }
 170
 171         platform_set_drvdata(am3517evm_snd_device, &snd_soc_am3517evm);
 172
 173         ret = platform_device_add(am3517evm_snd_device);
 174         if (ret)
 175                 goto err1;
 176
 177         return 0;
 178
 179 err1:
 180         printk(KERN_ERR "Unable to add platform device\n");
 181         platform_device_put(am3517evm_snd_device);
 182
 183         return ret;
 184 }
 185
 186 static void __exit am3517evm_soc_exit(void)
 187 {
 188         platform_device_unregister(am3517evm_snd_device);
 189 }
 190
 191 module_init(am3517evm_soc_init);
 192 module_exit(am3517evm_soc_exit);
 193
 194 MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
 195 MODULE_DESCRIPTION("ALSA SoC OMAP3517 / AM3517 EVM");
 196 MODULE_LICENSE("GPL v2");