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 "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->codec_dai;
  42         struct snd_soc_dai *cpu_dai = rtd->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             machine_is_davinci_dm365_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 int evm_spdif_hw_params(struct snd_pcm_substream *substream,
  84                                 struct snd_pcm_hw_params *params)
  85 {
  86         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  87         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  88
  89         /* set cpu DAI configuration */
  90         return snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
  91 }
  92
  93 static struct snd_soc_ops evm_ops = {
  94         .hw_params = evm_hw_params,
  95 };
  96
  97 static struct snd_soc_ops evm_spdif_ops = {
  98         .hw_params = evm_spdif_hw_params,
  99 };
 100
 101 /* davinci-evm machine dapm widgets */
 102 static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
 103         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 104         SND_SOC_DAPM_LINE("Line Out", NULL),
 105         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 106         SND_SOC_DAPM_LINE("Line In", NULL),
 107 };
 108
 109 /* davinci-evm machine audio_mapnections to the codec pins */
 110 static const struct snd_soc_dapm_route audio_map[] = {
 111         /* Headphone connected to HPLOUT, HPROUT */
 112         {"Headphone Jack", NULL, "HPLOUT"},
 113         {"Headphone Jack", NULL, "HPROUT"},
 114
 115         /* Line Out connected to LLOUT, RLOUT */
 116         {"Line Out", NULL, "LLOUT"},
 117         {"Line Out", NULL, "RLOUT"},
 118
 119         /* Mic connected to (MIC3L | MIC3R) */
 120         {"MIC3L", NULL, "Mic Bias 2V"},
 121         {"MIC3R", NULL, "Mic Bias 2V"},
 122         {"Mic Bias 2V", NULL, "Mic Jack"},
 123
 124         /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
 125         {"LINE1L", NULL, "Line In"},
 126         {"LINE2L", NULL, "Line In"},
 127         {"LINE1R", NULL, "Line In"},
 128         {"LINE2R", NULL, "Line In"},
 129 };
 130
 131 /* Logic for a aic3x as connected on a davinci-evm */
 132 static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
 133 {
 134         struct snd_soc_codec *codec = rtd->codec;
 135
 136         /* Add davinci-evm specific widgets */
 137         snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
 138                                   ARRAY_SIZE(aic3x_dapm_widgets));
 139
 140         /* Set up davinci-evm specific audio path audio_map */
 141         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 142
 143         /* not connected */
 144         snd_soc_dapm_disable_pin(codec, "MONO_LOUT");
 145         snd_soc_dapm_disable_pin(codec, "HPLCOM");
 146         snd_soc_dapm_disable_pin(codec, "HPRCOM");
 147
 148         /* always connected */
 149         snd_soc_dapm_enable_pin(codec, "Headphone Jack");
 150         snd_soc_dapm_enable_pin(codec, "Line Out");
 151         snd_soc_dapm_enable_pin(codec, "Mic Jack");
 152         snd_soc_dapm_enable_pin(codec, "Line In");
 153
 154         snd_soc_dapm_sync(codec);
 155
 156         return 0;
 157 }
 158
 159 /* davinci-evm digital audio interface glue - connects codec <--> CPU */
 160 static struct snd_soc_dai_link evm_dai = {
 161         .name = "TLV320AIC3X",
 162         .stream_name = "AIC3X",
 163         .cpu_dai_name = "davinci-mcasp.0",
 164         .codec_dai_name = "tlv320aic3x-hifi",
 165         .codec_name = "tlv320aic3x-codec.0-001a",
 166         .platform_name = "davinci-pcm-audio",
 167         .init = evm_aic3x_init,
 168         .ops = &evm_ops,
 169 };
 170
 171 static struct snd_soc_dai_link dm365_evm_dai = {
 172 #ifdef CONFIG_SND_DM365_AIC3X_CODEC
 173         .name = "TLV320AIC3X",
 174         .stream_name = "AIC3X",
 175         .cpu_dai_name = "davinci-i2s",
 176         .codec_dai_name = "tlv320aic3x-hifi",
 177         .init = evm_aic3x_init,
 178         .codec_name = "tlv320aic3x-codec.0-001a",
 179         .ops = &evm_ops,
 180 #elif defined(CONFIG_SND_DM365_VOICE_CODEC)
 181         .name = "Voice Codec - CQ93VC",
 182         .stream_name = "CQ93",
 183         .cpu_dai_name = "davinci-vcif",
 184         .codec_dai_name = "cq93vc-hifi",
 185         .codec_name = "cq93vc-codec",
 186 #endif
 187         .platform_name = "davinci-pcm-audio",
 188 };
 189
 190 static struct snd_soc_dai_link dm6467_evm_dai[] = {
 191         {
 192                 .name = "TLV320AIC3X",
 193                 .stream_name = "AIC3X",
 194                 .cpu_dai_name= "davinci-mcasp.0",
 195                 .codec_dai_name = "tlv320aic3x-hifi",
 196                 .platform_name ="davinci-pcm-audio",
 197                 .codec_name = "tlv320aic3x-codec.0-001a",
 198                 .init = evm_aic3x_init,
 199                 .ops = &evm_ops,
 200         },
 201         {
 202                 .name = "McASP",
 203                 .stream_name = "spdif",
 204                 .cpu_dai_name= "davinci-mcasp.1",
 205                 .codec_dai_name = "dit-hifi",
 206                 .codec_name = "spdif_dit",
 207                 .platform_name = "davinci-pcm-audio",
 208                 .ops = &evm_spdif_ops,
 209         },
 210 };
 211 static struct snd_soc_dai_link da8xx_evm_dai = {
 212         .name = "TLV320AIC3X",
 213         .stream_name = "AIC3X",
 214         .cpu_dai_name= "davinci-mcasp.0",
 215         .codec_dai_name = "tlv320aic3x-hifi",
 216         .codec_name = "tlv320aic3x-codec.0-001a",
 217         .platform_name = "davinci-pcm-audio",
 218         .init = evm_aic3x_init,
 219         .ops = &evm_ops,
 220 };
 221
 222 /* davinci dm6446, dm355 evm audio machine driver */
 223 static struct snd_soc_card snd_soc_card_evm = {
 224         .name = "DaVinci EVM",
 225         .dai_link = &evm_dai,
 226         .num_links = 1,
 227 };
 228
 229 /* davinci dm365 evm audio machine driver */
 230 static struct snd_soc_card dm365_snd_soc_card_evm = {
 231         .name = "DaVinci DM365 EVM",
 232         .dai_link = &dm365_evm_dai,
 233         .num_links = 1,
 234 };
 235
 236 /* davinci dm6467 evm audio machine driver */
 237 static struct snd_soc_card dm6467_snd_soc_card_evm = {
 238         .name = "DaVinci DM6467 EVM",
 239         .dai_link = dm6467_evm_dai,
 240         .num_links = ARRAY_SIZE(dm6467_evm_dai),
 241 };
 242
 243 static struct snd_soc_card da830_snd_soc_card = {
 244         .name = "DA830/OMAP-L137 EVM",
 245         .dai_link = &da8xx_evm_dai,
 246         .num_links = 1,
 247 };
 248
 249 static struct snd_soc_card da850_snd_soc_card = {
 250         .name = "DA850/OMAP-L138 EVM",
 251         .dai_link = &da8xx_evm_dai,
 252         .num_links = 1,
 253 };
 254
 255 static struct platform_device *evm_snd_device;
 256
 257 static int __init evm_init(void)
 258 {
 259         struct snd_soc_card *evm_snd_dev_data;
 260         int index;
 261         int ret;
 262
 263         if (machine_is_davinci_evm()) {
 264                 evm_snd_dev_data = &snd_soc_card_evm;
 265                 index = 0;
 266         } else if (machine_is_davinci_dm355_evm()) {
 267                 evm_snd_dev_data = &snd_soc_card_evm;
 268                 index = 1;
 269         } else if (machine_is_davinci_dm365_evm()) {
 270                 evm_snd_dev_data = &dm365_snd_soc_card_evm;
 271                 index = 0;
 272         } else if (machine_is_davinci_dm6467_evm()) {
 273                 evm_snd_dev_data = &dm6467_snd_soc_card_evm;
 274                 index = 0;
 275         } else if (machine_is_davinci_da830_evm()) {
 276                 evm_snd_dev_data = &da830_snd_soc_card;
 277                 index = 1;
 278         } else if (machine_is_davinci_da850_evm()) {
 279                 evm_snd_dev_data = &da850_snd_soc_card;
 280                 index = 0;
 281         } else
 282                 return -EINVAL;
 283
 284         evm_snd_device = platform_device_alloc("soc-audio", index);
 285         if (!evm_snd_device)
 286                 return -ENOMEM;
 287
 288         platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
 289         ret = platform_device_add(evm_snd_device);
 290         if (ret)
 291                 platform_device_put(evm_snd_device);
 292
 293         return ret;
 294 }
 295
 296 static void __exit evm_exit(void)
 297 {
 298         platform_device_unregister(evm_snd_device);
 299 }
 300
 301 module_init(evm_init);
 302 module_exit(evm_exit);
 303
 304 MODULE_AUTHOR("Vladimir Barinov");
 305 MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
 306 MODULE_LICENSE("GPL");