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->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
  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_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 */
 134 static 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 */
 144 static 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 */
 152 static struct snd_soc_device am3517evm_snd_devdata = {
 153         .card = &snd_soc_am3517evm,
 154         .codec_dev = &soc_codec_dev_tlv320aic23,
 155 };
 156
 157 static struct platform_device *am3517evm_snd_device;
 158
 159 static 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
 185 err1:
 186         printk(KERN_ERR "Unable to add platform device\n");
 187         platform_device_put(am3517evm_snd_device);
 188
 189         return ret;
 190 }
 191
 192 static void __exit am3517evm_soc_exit(void)
 193 {
 194         platform_device_unregister(am3517evm_snd_device);
 195 }
 196
 197 module_init(am3517evm_soc_init);
 198 module_exit(am3517evm_soc_exit);
 199
 200 MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
 201 MODULE_DESCRIPTION("ALSA SoC OMAP3517 / AM3517 EVM");
 202 MODULE_LICENSE("GPL v2");