sound/soc/davinci/davinci-evm.c

   1 /*
   2  * ASoC driver for TI DAVINCI EVM platform
   3  *
   4  * Author:      Vladimir Barinov, <vbarinov@embeddedalley.com>
   5  * Copyright:   (C) 2007 MontaVista Software, Inc., <source@mvista.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/timer.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/platform_device.h>
  17 #include <sound/core.h>
  18 #include <sound/pcm.h>
  19 #include <sound/soc.h>
  20 #include <sound/soc-dapm.h>
  21
  22 #include <asm/dma.h>
  23 #include <asm/mach-types.h>
  24
  25 #include <mach/asp.h>
  26 #include <mach/edma.h>
  27 #include <mach/mux.h>
  28
  29 #include "../codecs/tlv320aic3x.h"
  30 #include "../codecs/spdif_transciever.h"
  31 #include "davinci-pcm.h"
  32 #include "davinci-i2s.h"
  33 #include "davinci-mcasp.h"
  34
  35 #define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
  36                 SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF)
  37 static int evm_hw_params(struct snd_pcm_substream *substream,
  38                          struct snd_pcm_hw_params *params)
  39 {
  40         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  41         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  42         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  43         int ret = 0;
  44         unsigned sysclk;
  45
  46         /* ASP1 on DM355 EVM is clocked by an external oscillator */
  47         if (machine_is_davinci_dm355_evm() || machine_is_davinci_dm6467_evm())
  48                 sysclk = 27000000;
  49
  50         /* ASP0 in DM6446 EVM is clocked by U55, as configured by
  51          * board-dm644x-evm.c using GPIOs from U18.  There are six
  52          * options; here we "know" we use a 48 KHz sample rate.
  53          */
  54         else if (machine_is_davinci_evm())
  55                 sysclk = 12288000;
  56
  57         else
  58                 return -EINVAL;
  59
  60         /* set codec DAI configuration */
  61         ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
  62         if (ret < 0)
  63                 return ret;
  64
  65         /* set cpu DAI configuration */
  66         ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
  67         if (ret < 0)
  68                 return ret;
  69
  70         /* set the codec system clock */
  71         ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  72         if (ret < 0)
  73                 return ret;
  74
  75         return 0;
  76 }
  77
  78 static struct snd_soc_ops evm_ops = {
  79         .hw_params = evm_hw_params,
  80 };
  81
  82 /* davinci-evm machine dapm widgets */
  83 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
  84         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  85         SND_SOC_DAPM_LINE("Line Out", NULL),
  86         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  87         SND_SOC_DAPM_LINE("Line In", NULL),
  88 };
  89
  90 /* davinci-evm machine audio_mapnections to the codec pins */
  91 static const struct snd_soc_dapm_route audio_map[] = {
  92         /* Headphone connected to HPLOUT, HPROUT */
  93         {"Headphone Jack", NULL, "HPLOUT"},
  94         {"Headphone Jack", NULL, "HPROUT"},
  95
  96         /* Line Out connected to LLOUT, RLOUT */
  97         {"Line Out", NULL, "LLOUT"},
  98         {"Line Out", NULL, "RLOUT"},
  99
 100         /* Mic connected to (MIC3L | MIC3R) */
 101         {"MIC3L", NULL, "Mic Bias 2V"},
 102         {"MIC3R", NULL, "Mic Bias 2V"},
 103         {"Mic Bias 2V", NULL, "Mic Jack"},
 104
 105         /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
 106         {"LINE1L", NULL, "Line In"},
 107         {"LINE2L", NULL, "Line In"},
 108         {"LINE1R", NULL, "Line In"},
 109         {"LINE2R", NULL, "Line In"},
 110 };
 111
 112 /* Logic for a aic3x as connected on a davinci-evm */
 113 static int evm_aic3x_init(struct snd_soc_codec *codec)
 114 {
 115         /* Add davinci-evm specific widgets */
 116         snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
 117                                   ARRAY_SIZE(aic3x_dapm_widgets));
 118
 119         /* Set up davinci-evm specific audio path audio_map */
 120         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 121
 122         /* not connected */
 123         snd_soc_dapm_disable_pin(codec, "MONO_LOUT");
 124         snd_soc_dapm_disable_pin(codec, "HPLCOM");
 125         snd_soc_dapm_disable_pin(codec, "HPRCOM");
 126
 127         /* always connected */
 128         snd_soc_dapm_enable_pin(codec, "Headphone Jack");
 129         snd_soc_dapm_enable_pin(codec, "Line Out");
 130         snd_soc_dapm_enable_pin(codec, "Mic Jack");
 131         snd_soc_dapm_enable_pin(codec, "Line In");
 132
 133         snd_soc_dapm_sync(codec);
 134
 135         return 0;
 136 }
 137
 138 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 139 static struct snd_soc_dai_link evm_dai = {
 140         .name = "TLV320AIC3X",
 141         .stream_name = "AIC3X",
 142         .cpu_dai = &davinci_i2s_dai,
 143         .codec_dai = &aic3x_dai,
 144         .init = evm_aic3x_init,
 145         .ops = &evm_ops,
 146 };
 147
 148 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 149         {
 150                 .name = "TLV320AIC3X",
 151                 .stream_name = "AIC3X",
 152                 .cpu_dai = &davinci_mcasp_dai[DAVINCI_MCASP_I2S_DAI],
 153                 .codec_dai = &aic3x_dai,
 154                 .init = evm_aic3x_init,
 155                 .ops = &evm_ops,
 156         },
 157         {
 158                 .name = "McASP",
 159                 .stream_name = "spdif",
 160                 .cpu_dai = &davinci_mcasp_dai[DAVINCI_MCASP_DIT_DAI],
 161                 .codec_dai = &dit_stub_dai,
 162                 .ops = &evm_ops,
 163         },
 164 };
 165
 166 /* davinci-evm audio machine driver */
 167 static struct snd_soc_card snd_soc_card_evm = {
 168         .name = "DaVinci EVM",
 169         .platform = &davinci_soc_platform,
 170         .dai_link = &evm_dai,
 171         .num_links = 1,
 172 };
 173
 174 /* davinci dm6467 evm audio machine driver */
 175 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 176         .name = "DaVinci DM6467 EVM",
 177         .platform = &davinci_soc_platform,
 178         .dai_link = dm6467_evm_dai,
 179         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 180 };
 181
 182 /* evm audio private data */
 183 static struct aic3x_setup_data evm_aic3x_setup = {
 184         .i2c_bus = 1,
 185         .i2c_address = 0x1b,
 186 };
 187
 188 /* dm6467 evm audio private data */
 189 static struct aic3x_setup_data dm6467_evm_aic3x_setup = {
 190        .i2c_bus = 1,
 191        .i2c_address = 0x18,
 192 };
 193
 194 /* evm audio subsystem */
 195 static struct snd_soc_device evm_snd_devdata = {
 196         .card = &snd_soc_card_evm,
 197         .codec_dev = &soc_codec_dev_aic3x,
 198         .codec_data = &evm_aic3x_setup,
 199 };
 200
 201 /* evm audio subsystem */
 202 static struct snd_soc_device dm6467_evm_snd_devdata = {
 203         .card = &dm6467_snd_soc_card_evm,
 204         .codec_dev = &soc_codec_dev_aic3x,
 205         .codec_data = &dm6467_evm_aic3x_setup,
 206 };
 207
 208 static struct platform_device *evm_snd_device;
 209
 210 static int __init evm_init(void)
 211 {
 212         struct snd_soc_device *evm_snd_dev_data;
 213         int index;
 214         int ret;
 215
 216         if (machine_is_davinci_evm()) {
 217                 evm_snd_dev_data = &evm_snd_devdata;
 218                 index = 0;
 219         } else if (machine_is_davinci_dm355_evm()) {
 220                 evm_snd_dev_data = &evm_snd_devdata;
 221                 index = 1;
 222         } else if (machine_is_davinci_dm6467_evm()) {
 223                 evm_snd_dev_data = &dm6467_evm_snd_devdata;
 224                 index = 0;
 225         } else
 226                 return -EINVAL;
 227
 228         evm_snd_device = platform_device_alloc("soc-audio", index);
 229         if (!evm_snd_device)
 230                 return -ENOMEM;
 231
 232         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 233         evm_snd_dev_data->dev = &evm_snd_device->dev;
 234         ret = platform_device_add(evm_snd_device);
 235         if (ret)
 236                 platform_device_put(evm_snd_device);
 237
 238         return ret;
 239 }
 240
 241 static void __exit evm_exit(void)
 242 {
 243         platform_device_unregister(evm_snd_device);
 244 }
 245
 246 module_init(evm_init);
 247 module_exit(evm_exit);
 248
 249 MODULE_AUTHOR("Vladimir Barinov");
 250 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 251 MODULE_LICENSE("GPL");