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 <linux/i2c.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/soc.h>
  21 #include <sound/soc-dapm.h>
  22
  23 #include <asm/dma.h>
  24 #include <asm/mach-types.h>
  25
  26 #include <mach/asp.h>
  27 #include <mach/edma.h>
  28 #include <mach/mux.h>
  29
  30 #include "../codecs/tlv320aic3x.h"
  31 #include "../codecs/spdif_transciever.h"
  32 #include "davinci-pcm.h"
  33 #include "davinci-i2s.h"
  34 #include "davinci-mcasp.h"
  35
  36 #define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
  37                 SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF)
  38 static int evm_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->dai->codec_dai;
  43         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  44         int ret = 0;
  45         unsigned sysclk;
  46
  47         /* ASP1 on DM355 EVM is clocked by an external oscillator */
  48         if (machine_is_davinci_dm355_evm() || machine_is_davinci_dm6467_evm() ||
  49             machine_is_davinci_dm365_evm())
  50                 sysclk = 27000000;
  51
  52         /* ASP0 in DM6446 EVM is clocked by U55, as configured by
  53          * board-dm644x-evm.c using GPIOs from U18.  There are six
  54          * options; here we "know" we use a 48 KHz sample rate.
  55          */
  56         else if (machine_is_davinci_evm())
  57                 sysclk = 12288000;
  58
  59         else if (machine_is_davinci_da830_evm() ||
  60                                 machine_is_davinci_da850_evm())
  61                 sysclk = 24576000;
  62
  63         else
  64                 return -EINVAL;
  65
  66         /* set codec DAI configuration */
  67         ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
  68         if (ret < 0)
  69                 return ret;
  70
  71         /* set cpu DAI configuration */
  72         ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
  73         if (ret < 0)
  74                 return ret;
  75
  76         /* set the codec system clock */
  77         ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
  78         if (ret < 0)
  79                 return ret;
  80
  81         return 0;
  82 }
  83
  84 static struct snd_soc_ops evm_ops = {
  85         .hw_params = evm_hw_params,
  86 };
  87
  88 /* davinci-evm machine dapm widgets */
  89 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
  90         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  91         SND_SOC_DAPM_LINE("Line Out", NULL),
  92         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  93         SND_SOC_DAPM_LINE("Line In", NULL),
  94 };
  95
  96 /* davinci-evm machine audio_mapnections to the codec pins */
  97 static const struct snd_soc_dapm_route audio_map[] = {
  98         /* Headphone connected to HPLOUT, HPROUT */
  99         {"Headphone Jack", NULL, "HPLOUT"},
 100         {"Headphone Jack", NULL, "HPROUT"},
 101
 102         /* Line Out connected to LLOUT, RLOUT */
 103         {"Line Out", NULL, "LLOUT"},
 104         {"Line Out", NULL, "RLOUT"},
 105
 106         /* Mic connected to (MIC3L | MIC3R) */
 107         {"MIC3L", NULL, "Mic Bias 2V"},
 108         {"MIC3R", NULL, "Mic Bias 2V"},
 109         {"Mic Bias 2V", NULL, "Mic Jack"},
 110
 111         /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
 112         {"LINE1L", NULL, "Line In"},
 113         {"LINE2L", NULL, "Line In"},
 114         {"LINE1R", NULL, "Line In"},
 115         {"LINE2R", NULL, "Line In"},
 116 };
 117
 118 /* Logic for a aic3x as connected on a davinci-evm */
 119 static int evm_aic3x_init(struct snd_soc_codec *codec)
 120 {
 121         /* Add davinci-evm specific widgets */
 122         snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
 123                                   ARRAY_SIZE(aic3x_dapm_widgets));
 124
 125         /* Set up davinci-evm specific audio path audio_map */
 126         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 127
 128         /* not connected */
 129         snd_soc_dapm_disable_pin(codec, "MONO_LOUT");
 130         snd_soc_dapm_disable_pin(codec, "HPLCOM");
 131         snd_soc_dapm_disable_pin(codec, "HPRCOM");
 132
 133         /* always connected */
 134         snd_soc_dapm_enable_pin(codec, "Headphone Jack");
 135         snd_soc_dapm_enable_pin(codec, "Line Out");
 136         snd_soc_dapm_enable_pin(codec, "Mic Jack");
 137         snd_soc_dapm_enable_pin(codec, "Line In");
 138
 139         snd_soc_dapm_sync(codec);
 140
 141         return 0;
 142 }
 143
 144 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 145 static struct snd_soc_dai_link evm_dai = {
 146         .name = "TLV320AIC3X",
 147         .stream_name = "AIC3X",
 148         .cpu_dai = &davinci_i2s_dai,
 149         .codec_dai = &aic3x_dai,
 150         .init = evm_aic3x_init,
 151         .ops = &evm_ops,
 152 };
 153
 154 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 155         {
 156                 .name = "TLV320AIC3X",
 157                 .stream_name = "AIC3X",
 158                 .cpu_dai = &davinci_mcasp_dai[DAVINCI_MCASP_I2S_DAI],
 159                 .codec_dai = &aic3x_dai,
 160                 .init = evm_aic3x_init,
 161                 .ops = &evm_ops,
 162         },
 163         {
 164                 .name = "McASP",
 165                 .stream_name = "spdif",
 166                 .cpu_dai = &davinci_mcasp_dai[DAVINCI_MCASP_DIT_DAI],
 167                 .codec_dai = &dit_stub_dai,
 168                 .ops = &evm_ops,
 169         },
 170 };
 171 static struct snd_soc_dai_link da8xx_evm_dai = {
 172         .name = "TLV320AIC3X",
 173         .stream_name = "AIC3X",
 174         .cpu_dai = &davinci_mcasp_dai[DAVINCI_MCASP_I2S_DAI],
 175         .codec_dai = &aic3x_dai,
 176         .init = evm_aic3x_init,
 177         .ops = &evm_ops,
 178 };
 179
 180 /* davinci dm6446, dm355 or dm365 evm audio machine driver */
 181 static struct snd_soc_card snd_soc_card_evm = {
 182         .name = "DaVinci EVM",
 183         .platform = &davinci_soc_platform,
 184         .dai_link = &evm_dai,
 185         .num_links = 1,
 186 };
 187
 188 /* davinci dm6467 evm audio machine driver */
 189 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 190         .name = "DaVinci DM6467 EVM",
 191         .platform = &davinci_soc_platform,
 192         .dai_link = dm6467_evm_dai,
 193         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 194 };
 195
 196 static struct snd_soc_card da830_snd_soc_card = {
 197         .name = "DA830/OMAP-L137 EVM",
 198         .dai_link = &da8xx_evm_dai,
 199         .platform = &davinci_soc_platform,
 200         .num_links = 1,
 201 };
 202
 203 static struct snd_soc_card da850_snd_soc_card = {
 204         .name = "DA850/OMAP-L138 EVM",
 205         .dai_link = &da8xx_evm_dai,
 206         .platform = &davinci_soc_platform,
 207         .num_links = 1,
 208 };
 209
 210 static struct aic3x_setup_data aic3x_setup;
 211
 212 /* evm audio subsystem */
 213 static struct snd_soc_device evm_snd_devdata = {
 214         .card = &snd_soc_card_evm,
 215         .codec_dev = &soc_codec_dev_aic3x,
 216         .codec_data = &aic3x_setup,
 217 };
 218
 219 /* evm audio subsystem */
 220 static struct snd_soc_device dm6467_evm_snd_devdata = {
 221         .card = &dm6467_snd_soc_card_evm,
 222         .codec_dev = &soc_codec_dev_aic3x,
 223         .codec_data = &aic3x_setup,
 224 };
 225
 226 /* evm audio subsystem */
 227 static struct snd_soc_device da830_evm_snd_devdata = {
 228         .card = &da830_snd_soc_card,
 229         .codec_dev = &soc_codec_dev_aic3x,
 230         .codec_data = &aic3x_setup,
 231 };
 232
 233 static struct snd_soc_device da850_evm_snd_devdata = {
 234         .card           = &da850_snd_soc_card,
 235         .codec_dev      = &soc_codec_dev_aic3x,
 236         .codec_data     = &aic3x_setup,
 237 };
 238
 239 static struct platform_device *evm_snd_device;
 240
 241 static int __init evm_init(void)
 242 {
 243         struct snd_soc_device *evm_snd_dev_data;
 244         int index;
 245         int ret;
 246
 247         if (machine_is_davinci_evm() || machine_is_davinci_dm365_evm()) {
 248                 evm_snd_dev_data = &evm_snd_devdata;
 249                 index = 0;
 250         } else if (machine_is_davinci_dm355_evm()) {
 251                 evm_snd_dev_data = &evm_snd_devdata;
 252                 index = 1;
 253         } else if (machine_is_davinci_dm6467_evm()) {
 254                 evm_snd_dev_data = &dm6467_evm_snd_devdata;
 255                 index = 0;
 256         } else if (machine_is_davinci_da830_evm()) {
 257                 evm_snd_dev_data = &da830_evm_snd_devdata;
 258                 index = 1;
 259         } else if (machine_is_davinci_da850_evm()) {
 260                 evm_snd_dev_data = &da850_evm_snd_devdata;
 261                 index = 0;
 262         } else
 263                 return -EINVAL;
 264
 265         evm_snd_device = platform_device_alloc("soc-audio", index);
 266         if (!evm_snd_device)
 267                 return -ENOMEM;
 268
 269         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 270         evm_snd_dev_data->dev = &evm_snd_device->dev;
 271         ret = platform_device_add(evm_snd_device);
 272         if (ret)
 273                 platform_device_put(evm_snd_device);
 274
 275         return ret;
 276 }
 277
 278 static void __exit evm_exit(void)
 279 {
 280         platform_device_unregister(evm_snd_device);
 281 }
 282
 283 module_init(evm_init);
 284 module_exit(evm_exit);
 285
 286 MODULE_AUTHOR("Vladimir Barinov");
 287 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 288 MODULE_LICENSE("GPL");