sound/soc/pxa/corgi.c

   1 /*
   2  * corgi.c  --  SoC audio for Corgi
   3  *
   4  * Copyright 2005 Wolfson Microelectronics PLC.
   5  * Copyright 2005 Openedhand Ltd.
   6  *
   7  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
   8  *          Richard Purdie <richard@openedhand.com>
   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;  either version 2 of the  License, or (at your
  13  *  option) any later version.
  14  */
  15
  16 #include <linux/module.h>
  17 #include <linux/moduleparam.h>
  18 #include <linux/timer.h>
  19 #include <linux/i2c.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/gpio.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/soc.h>
  26 #include <sound/soc-dapm.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <mach/corgi.h>
  30 #include <mach/audio.h>
  31
  32 #include "../codecs/wm8731.h"
  33 #include "pxa2xx-pcm.h"
  34 #include "pxa2xx-i2s.h"
  35
  36 #define CORGI_HP        0
  37 #define CORGI_MIC       1
  38 #define CORGI_LINE      2
  39 #define CORGI_HEADSET   3
  40 #define CORGI_HP_OFF    4
  41 #define CORGI_SPK_ON    0
  42 #define CORGI_SPK_OFF   1
  43
  44  /* audio clock in Hz - rounded from 12.235MHz */
  45 #define CORGI_AUDIO_CLOCK 12288000
  46
  47 static int corgi_jack_func;
  48 static int corgi_spk_func;
  49
  50 static void corgi_ext_control(struct snd_soc_codec *codec)
  51 {
  52         /* set up jack connection */
  53         switch (corgi_jack_func) {
  54         case CORGI_HP:
  55                 /* set = unmute headphone */
  56                 gpio_set_value(CORGI_GPIO_MUTE_L, 1);
  57                 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
  58                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  59                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  60                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  61                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  62                 break;
  63         case CORGI_MIC:
  64                 /* reset = mute headphone */
  65                 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
  66                 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
  67                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  68                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  69                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  70                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  71                 break;
  72         case CORGI_LINE:
  73                 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
  74                 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
  75                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  76                 snd_soc_dapm_enable_pin(codec, "Line Jack");
  77                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  78                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  79                 break;
  80         case CORGI_HEADSET:
  81                 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
  82                 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
  83                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  84                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  85                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  86                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  87                 break;
  88         }
  89
  90         if (corgi_spk_func == CORGI_SPK_ON)
  91                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  92         else
  93                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  94
  95         /* signal a DAPM event */
  96         snd_soc_dapm_sync(codec);
  97 }
  98
  99 static int corgi_startup(struct snd_pcm_substream *substream)
 100 {
 101         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 102         struct snd_soc_codec *codec = rtd->socdev->card->codec;
 103
 104         /* check the jack status at stream startup */
 105         corgi_ext_control(codec);
 106         return 0;
 107 }
 108
 109 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
 110 static void corgi_shutdown(struct snd_pcm_substream *substream)
 111 {
 112         /* set = unmute headphone */
 113         gpio_set_value(CORGI_GPIO_MUTE_L, 1);
 114         gpio_set_value(CORGI_GPIO_MUTE_R, 1);
 115 }
 116
 117 static int corgi_hw_params(struct snd_pcm_substream *substream,
 118         struct snd_pcm_hw_params *params)
 119 {
 120         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 121         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 122         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 123         unsigned int clk = 0;
 124         int ret = 0;
 125
 126         switch (params_rate(params)) {
 127         case 8000:
 128         case 16000:
 129         case 48000:
 130         case 96000:
 131                 clk = 12288000;
 132                 break;
 133         case 11025:
 134         case 22050:
 135         case 44100:
 136                 clk = 11289600;
 137                 break;
 138         }
 139
 140         /* set codec DAI configuration */
 141         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 142                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 143         if (ret < 0)
 144                 return ret;
 145
 146         /* set cpu DAI configuration */
 147         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 148                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 149         if (ret < 0)
 150                 return ret;
 151
 152         /* set the codec system clock for DAC and ADC */
 153         ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
 154                 SND_SOC_CLOCK_IN);
 155         if (ret < 0)
 156                 return ret;
 157
 158         /* set the I2S system clock as input (unused) */
 159         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 160                 SND_SOC_CLOCK_IN);
 161         if (ret < 0)
 162                 return ret;
 163
 164         return 0;
 165 }
 166
 167 static struct snd_soc_ops corgi_ops = {
 168         .startup = corgi_startup,
 169         .hw_params = corgi_hw_params,
 170         .shutdown = corgi_shutdown,
 171 };
 172
 173 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
 174         struct snd_ctl_elem_value *ucontrol)
 175 {
 176         ucontrol->value.integer.value[0] = corgi_jack_func;
 177         return 0;
 178 }
 179
 180 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
 181         struct snd_ctl_elem_value *ucontrol)
 182 {
 183         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 184
 185         if (corgi_jack_func == ucontrol->value.integer.value[0])
 186                 return 0;
 187
 188         corgi_jack_func = ucontrol->value.integer.value[0];
 189         corgi_ext_control(codec);
 190         return 1;
 191 }
 192
 193 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
 194         struct snd_ctl_elem_value *ucontrol)
 195 {
 196         ucontrol->value.integer.value[0] = corgi_spk_func;
 197         return 0;
 198 }
 199
 200 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
 201         struct snd_ctl_elem_value *ucontrol)
 202 {
 203         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 204
 205         if (corgi_spk_func == ucontrol->value.integer.value[0])
 206                 return 0;
 207
 208         corgi_spk_func = ucontrol->value.integer.value[0];
 209         corgi_ext_control(codec);
 210         return 1;
 211 }
 212
 213 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
 214         struct snd_kcontrol *k, int event)
 215 {
 216         gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
 217         return 0;
 218 }
 219
 220 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
 221         struct snd_kcontrol *k, int event)
 222 {
 223         gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
 224         return 0;
 225 }
 226
 227 /* corgi machine dapm widgets */
 228 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 229 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 230 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
 231 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
 232 SND_SOC_DAPM_LINE("Line Jack", NULL),
 233 SND_SOC_DAPM_HP("Headset Jack", NULL),
 234 };
 235
 236 /* Corgi machine audio map (connections to the codec pins) */
 237 static const struct snd_soc_dapm_route audio_map[] = {
 238
 239         /* headset Jack  - in = micin, out = LHPOUT*/
 240         {"Headset Jack", NULL, "LHPOUT"},
 241
 242         /* headphone connected to LHPOUT1, RHPOUT1 */
 243         {"Headphone Jack", NULL, "LHPOUT"},
 244         {"Headphone Jack", NULL, "RHPOUT"},
 245
 246         /* speaker connected to LOUT, ROUT */
 247         {"Ext Spk", NULL, "ROUT"},
 248         {"Ext Spk", NULL, "LOUT"},
 249
 250         /* mic is connected to MICIN (via right channel of headphone jack) */
 251         {"MICIN", NULL, "Mic Jack"},
 252
 253         /* Same as the above but no mic bias for line signals */
 254         {"MICIN", NULL, "Line Jack"},
 255 };
 256
 257 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 258         "Off"};
 259 static const char *spk_function[] = {"On", "Off"};
 260 static const struct soc_enum corgi_enum[] = {
 261         SOC_ENUM_SINGLE_EXT(5, jack_function),
 262         SOC_ENUM_SINGLE_EXT(2, spk_function),
 263 };
 264
 265 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
 266         SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
 267                 corgi_set_jack),
 268         SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
 269                 corgi_set_spk),
 270 };
 271
 272 /*
 273  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 274  */
 275 static int corgi_wm8731_init(struct snd_soc_codec *codec)
 276 {
 277         int err;
 278
 279         snd_soc_dapm_nc_pin(codec, "LLINEIN");
 280         snd_soc_dapm_nc_pin(codec, "RLINEIN");
 281
 282         /* Add corgi specific controls */
 283         err = snd_soc_add_controls(codec, wm8731_corgi_controls,
 284                                 ARRAY_SIZE(wm8731_corgi_controls));
 285         if (err < 0)
 286                 return err;
 287
 288         /* Add corgi specific widgets */
 289         snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
 290                                   ARRAY_SIZE(wm8731_dapm_widgets));
 291
 292         /* Set up corgi specific audio path audio_map */
 293         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 294
 295         snd_soc_dapm_sync(codec);
 296         return 0;
 297 }
 298
 299 /* corgi digital audio interface glue - connects codec <--> CPU */
 300 static struct snd_soc_dai_link corgi_dai = {
 301         .name = "WM8731",
 302         .stream_name = "WM8731",
 303         .cpu_dai = &pxa_i2s_dai,
 304         .codec_dai = &wm8731_dai,
 305         .init = corgi_wm8731_init,
 306         .ops = &corgi_ops,
 307 };
 308
 309 /* corgi audio machine driver */
 310 static struct snd_soc_card snd_soc_corgi = {
 311         .name = "Corgi",
 312         .platform = &pxa2xx_soc_platform,
 313         .dai_link = &corgi_dai,
 314         .num_links = 1,
 315 };
 316
 317 /* corgi audio subsystem */
 318 static struct snd_soc_device corgi_snd_devdata = {
 319         .card = &snd_soc_corgi,
 320         .codec_dev = &soc_codec_dev_wm8731,
 321 };
 322
 323 static struct platform_device *corgi_snd_device;
 324
 325 static int __init corgi_init(void)
 326 {
 327         int ret;
 328
 329         if (!(machine_is_corgi() || machine_is_shepherd() ||
 330               machine_is_husky()))
 331                 return -ENODEV;
 332
 333         corgi_snd_device = platform_device_alloc("soc-audio", -1);
 334         if (!corgi_snd_device)
 335                 return -ENOMEM;
 336
 337         platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
 338         corgi_snd_devdata.dev = &corgi_snd_device->dev;
 339         ret = platform_device_add(corgi_snd_device);
 340
 341         if (ret)
 342                 platform_device_put(corgi_snd_device);
 343
 344         return ret;
 345 }
 346
 347 static void __exit corgi_exit(void)
 348 {
 349         platform_device_unregister(corgi_snd_device);
 350 }
 351
 352 module_init(corgi_init);
 353 module_exit(corgi_exit);
 354
 355 /* Module information */
 356 MODULE_AUTHOR("Richard Purdie");
 357 MODULE_DESCRIPTION("ALSA SoC Corgi");
 358 MODULE_LICENSE("GPL");