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
  26 #include <asm/mach-types.h>
  27 #include <mach/hardware.h>
  28 #include <mach/gpio.h>
  29 #include <plat/mcbsp.h>
  30
  31 #include "omap-mcbsp.h"
  32 #include "omap-pcm.h"
  33
  34 #include "../codecs/tlv320aic23.h"
  35
  36 #define CODEC_CLOCK     12000000
  37
  38 static int am3517evm_hw_params(struct snd_pcm_substream *substream,
  39         struct snd_pcm_hw_params *params)
  40 {
  41         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  42         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  43         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  44         int ret;
  45
  46         /* Set codec DAI configuration */
  47         ret = snd_soc_dai_set_fmt(codec_dai,
  48                                   SND_SOC_DAIFMT_DSP_B |
  49                                   SND_SOC_DAIFMT_NB_NF |
  50                                   SND_SOC_DAIFMT_CBM_CFM);
  51         if (ret < 0) {
  52                 printk(KERN_ERR "can't set codec DAI configuration\n");
  53                 return ret;
  54         }
  55
  56         /* Set cpu DAI configuration */
  57         ret = snd_soc_dai_set_fmt(cpu_dai,
  58                                   SND_SOC_DAIFMT_DSP_B |
  59                                   SND_SOC_DAIFMT_NB_NF |
  60                                   SND_SOC_DAIFMT_CBM_CFM);
  61         if (ret < 0) {
  62                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  63                 return ret;
  64         }
  65
  66         /* Set the codec system clock for DAC and ADC */
  67         ret = snd_soc_dai_set_sysclk(codec_dai, 0,
  68                         CODEC_CLOCK, SND_SOC_CLOCK_IN);
  69         if (ret < 0) {
  70                 printk(KERN_ERR "can't set codec system clock\n");
  71                 return ret;
  72         }
  73
  74         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0,
  75                                 SND_SOC_CLOCK_IN);
  76         if (ret < 0) {
  77                 printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_CLKR_SRC_CLKX\n");
  78                 return ret;
  79         }
  80
  81         snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0,
  82                                 SND_SOC_CLOCK_IN);
  83         if (ret < 0) {
  84                 printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_FSR_SRC_FSX\n");
  85                 return ret;
  86         }
  87
  88         return 0;
  89 }
  90
  91 static struct snd_soc_ops am3517evm_ops = {
  92         .hw_params = am3517evm_hw_params,
  93 };
  94
  95 /* am3517evm machine dapm widgets */
  96 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
  97         SND_SOC_DAPM_HP("Line Out", NULL),
  98         SND_SOC_DAPM_LINE("Line In", NULL),
  99         SND_SOC_DAPM_MIC("Mic In", NULL),
 100 };
 101
 102 static const struct snd_soc_dapm_route audio_map[] = {
 103         /* Line Out connected to LLOUT, RLOUT */
 104         {"Line Out", NULL, "LOUT"},
 105         {"Line Out", NULL, "ROUT"},
 106
 107         {"LLINEIN", NULL, "Line In"},
 108         {"RLINEIN", NULL, "Line In"},
 109
 110         {"MICIN", NULL, "Mic In"},
 111 };
 112
 113 static int am3517evm_aic23_init(struct snd_soc_pcm_runtime *rtd)
 114 {
 115         struct snd_soc_codec *codec = rtd->codec;
 116         struct snd_soc_dapm_context *dapm = &codec->dapm;
 117
 118         /* Add am3517-evm specific widgets */
 119         snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
 120                                   ARRAY_SIZE(tlv320aic23_dapm_widgets));
 121
 122         /* Set up davinci-evm specific audio path audio_map */
 123         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 124
 125         /* always connected */
 126         snd_soc_dapm_enable_pin(dapm, "Line Out");
 127         snd_soc_dapm_enable_pin(dapm, "Line In");
 128         snd_soc_dapm_enable_pin(dapm, "Mic In");
 129
 130         snd_soc_dapm_sync(dapm);
 131
 132         return 0;
 133 }
 134
 135 /* Digital audio interface glue - connects codec <--> CPU */
 136 static struct snd_soc_dai_link am3517evm_dai = {
 137         .name = "TLV320AIC23",
 138         .stream_name = "AIC23",
 139         .cpu_dai_name ="omap-mcbsp-dai.0",
 140         .codec_dai_name = "tlv320aic23-hifi",
 141         .platform_name = "omap-pcm-audio",
 142         .codec_name = "tlv320aic23-codec.2-001a",
 143         .init = am3517evm_aic23_init,
 144         .ops = &am3517evm_ops,
 145 };
 146
 147 /* Audio machine driver */
 148 static struct snd_soc_card snd_soc_am3517evm = {
 149         .name = "am3517evm",
 150         .dai_link = &am3517evm_dai,
 151         .num_links = 1,
 152 };
 153
 154 static struct platform_device *am3517evm_snd_device;
 155
 156 static int __init am3517evm_soc_init(void)
 157 {
 158         int ret;
 159
 160         if (!machine_is_omap3517evm())
 161                 return -ENODEV;
 162         pr_info("OMAP3517 / AM3517 EVM SoC init\n");
 163
 164         am3517evm_snd_device = platform_device_alloc("soc-audio", -1);
 165         if (!am3517evm_snd_device) {
 166                 printk(KERN_ERR "Platform device allocation failed\n");
 167                 return -ENOMEM;
 168         }
 169
 170         platform_set_drvdata(am3517evm_snd_device, &snd_soc_am3517evm);
 171
 172         ret = platform_device_add(am3517evm_snd_device);
 173         if (ret)
 174                 goto err1;
 175
 176         return 0;
 177
 178 err1:
 179         printk(KERN_ERR "Unable to add platform device\n");
 180         platform_device_put(am3517evm_snd_device);
 181
 182         return ret;
 183 }
 184
 185 static void __exit am3517evm_soc_exit(void)
 186 {
 187         platform_device_unregister(am3517evm_snd_device);
 188 }
 189
 190 module_init(am3517evm_soc_init);
 191 module_exit(am3517evm_soc_exit);
 192
 193 MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
 194 MODULE_DESCRIPTION("ALSA SoC OMAP3517 / AM3517 EVM");
 195 MODULE_LICENSE("GPL v2");