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