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-i2s.h"
  34
  35 #define CORGI_HP        0
  36 #define CORGI_MIC       1
  37 #define CORGI_LINE      2
  38 #define CORGI_HEADSET   3
  39 #define CORGI_HP_OFF    4
  40 #define CORGI_SPK_ON    0
  41 #define CORGI_SPK_OFF   1
  42
  43  /* audio clock in Hz - rounded from 12.235MHz */
  44 #define CORGI_AUDIO_CLOCK 12288000
  45
  46 static int corgi_jack_func;
  47 static int corgi_spk_func;
  48
  49 static void corgi_ext_control(struct snd_soc_codec *codec)
  50 {
  51         /* set up jack connection */
  52         switch (corgi_jack_func) {
  53         case CORGI_HP:
  54                 /* set = unmute headphone */
  55                 gpio_set_value(CORGI_GPIO_MUTE_L, 1);
  56                 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
  57                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  58                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  59                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  60                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  61                 break;
  62         case CORGI_MIC:
  63                 /* reset = mute headphone */
  64                 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
  65                 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
  66                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  67                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  68                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  69                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  70                 break;
  71         case CORGI_LINE:
  72                 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
  73                 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
  74                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  75                 snd_soc_dapm_enable_pin(codec, "Line Jack");
  76                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  77                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  78                 break;
  79         case CORGI_HEADSET:
  80                 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
  81                 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
  82                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  83                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  84                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  85                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  86                 break;
  87         }
  88
  89         if (corgi_spk_func == CORGI_SPK_ON)
  90                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  91         else
  92                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  93
  94         /* signal a DAPM event */
  95         snd_soc_dapm_sync(codec);
  96 }
  97
  98 static int corgi_startup(struct snd_pcm_substream *substream)
  99 {
 100         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 101         struct snd_soc_codec *codec = rtd->codec;
 102
 103         /* check the jack status at stream startup */
 104         corgi_ext_control(codec);
 105         return 0;
 106 }
 107
 108 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
 109 static void corgi_shutdown(struct snd_pcm_substream *substream)
 110 {
 111         /* set = unmute headphone */
 112         gpio_set_value(CORGI_GPIO_MUTE_L, 1);
 113         gpio_set_value(CORGI_GPIO_MUTE_R, 1);
 114 }
 115
 116 static int corgi_hw_params(struct snd_pcm_substream *substream,
 117         struct snd_pcm_hw_params *params)
 118 {
 119         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 120         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 121         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 122         unsigned int clk = 0;
 123         int ret = 0;
 124
 125         switch (params_rate(params)) {
 126         case 8000:
 127         case 16000:
 128         case 48000:
 129         case 96000:
 130                 clk = 12288000;
 131                 break;
 132         case 11025:
 133         case 22050:
 134         case 44100:
 135                 clk = 11289600;
 136                 break;
 137         }
 138
 139         /* set codec DAI configuration */
 140         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 141                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 142         if (ret < 0)
 143                 return ret;
 144
 145         /* set cpu DAI configuration */
 146         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 147                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 148         if (ret < 0)
 149                 return ret;
 150
 151         /* set the codec system clock for DAC and ADC */
 152         ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, clk,
 153                 SND_SOC_CLOCK_IN);
 154         if (ret < 0)
 155                 return ret;
 156
 157         /* set the I2S system clock as input (unused) */
 158         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 159                 SND_SOC_CLOCK_IN);
 160         if (ret < 0)
 161                 return ret;
 162
 163         return 0;
 164 }
 165
 166 static struct snd_soc_ops corgi_ops = {
 167         .startup = corgi_startup,
 168         .hw_params = corgi_hw_params,
 169         .shutdown = corgi_shutdown,
 170 };
 171
 172 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
 173         struct snd_ctl_elem_value *ucontrol)
 174 {
 175         ucontrol->value.integer.value[0] = corgi_jack_func;
 176         return 0;
 177 }
 178
 179 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
 180         struct snd_ctl_elem_value *ucontrol)
 181 {
 182         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 183
 184         if (corgi_jack_func == ucontrol->value.integer.value[0])
 185                 return 0;
 186
 187         corgi_jack_func = ucontrol->value.integer.value[0];
 188         corgi_ext_control(codec);
 189         return 1;
 190 }
 191
 192 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
 193         struct snd_ctl_elem_value *ucontrol)
 194 {
 195         ucontrol->value.integer.value[0] = corgi_spk_func;
 196         return 0;
 197 }
 198
 199 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
 200         struct snd_ctl_elem_value *ucontrol)
 201 {
 202         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 203
 204         if (corgi_spk_func == ucontrol->value.integer.value[0])
 205                 return 0;
 206
 207         corgi_spk_func = ucontrol->value.integer.value[0];
 208         corgi_ext_control(codec);
 209         return 1;
 210 }
 211
 212 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
 213         struct snd_kcontrol *k, int event)
 214 {
 215         gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
 216         return 0;
 217 }
 218
 219 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
 220         struct snd_kcontrol *k, int event)
 221 {
 222         gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
 223         return 0;
 224 }
 225
 226 /* corgi machine dapm widgets */
 227 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 228 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 229 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
 230 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
 231 SND_SOC_DAPM_LINE("Line Jack", NULL),
 232 SND_SOC_DAPM_HP("Headset Jack", NULL),
 233 };
 234
 235 /* Corgi machine audio map (connections to the codec pins) */
 236 static const struct snd_soc_dapm_route audio_map[] = {
 237
 238         /* headset Jack  - in = micin, out = LHPOUT*/
 239         {"Headset Jack", NULL, "LHPOUT"},
 240
 241         /* headphone connected to LHPOUT1, RHPOUT1 */
 242         {"Headphone Jack", NULL, "LHPOUT"},
 243         {"Headphone Jack", NULL, "RHPOUT"},
 244
 245         /* speaker connected to LOUT, ROUT */
 246         {"Ext Spk", NULL, "ROUT"},
 247         {"Ext Spk", NULL, "LOUT"},
 248
 249         /* mic is connected to MICIN (via right channel of headphone jack) */
 250         {"MICIN", NULL, "Mic Jack"},
 251
 252         /* Same as the above but no mic bias for line signals */
 253         {"MICIN", NULL, "Line Jack"},
 254 };
 255
 256 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 257         "Off"};
 258 static const char *spk_function[] = {"On", "Off"};
 259 static const struct soc_enum corgi_enum[] = {
 260         SOC_ENUM_SINGLE_EXT(5, jack_function),
 261         SOC_ENUM_SINGLE_EXT(2, spk_function),
 262 };
 263
 264 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
 265         SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
 266                 corgi_set_jack),
 267         SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
 268                 corgi_set_spk),
 269 };
 270
 271 /*
 272  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 273  */
 274 static int corgi_wm8731_init(struct snd_soc_pcm_runtime *rtd)
 275 {
 276         struct snd_soc_codec *codec = rtd->codec;
 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_name = "pxa-is2-dai",
 304         .codec_dai_name = "wm8731-hifi",
 305         .platform_name = "pxa-pcm-audio",
 306         .codec_name = "wm8731-codec-0.001a",
 307         .init = corgi_wm8731_init,
 308         .ops = &corgi_ops,
 309 };
 310
 311 /* corgi audio machine driver */
 312 static struct snd_soc_card snd_soc_corgi = {
 313         .name = "Corgi",
 314         .dai_link = &corgi_dai,
 315         .num_links = 1,
 316 };
 317
 318 static struct platform_device *corgi_snd_device;
 319
 320 static int __init corgi_init(void)
 321 {
 322         int ret;
 323
 324         if (!(machine_is_corgi() || machine_is_shepherd() ||
 325               machine_is_husky()))
 326                 return -ENODEV;
 327
 328         corgi_snd_device = platform_device_alloc("soc-audio", -1);
 329         if (!corgi_snd_device)
 330                 return -ENOMEM;
 331
 332         platform_set_drvdata(corgi_snd_device, &snd_soc_corgi);
 333         ret = platform_device_add(corgi_snd_device);
 334
 335         if (ret)
 336                 platform_device_put(corgi_snd_device);
 337
 338         return ret;
 339 }
 340
 341 static void __exit corgi_exit(void)
 342 {
 343         platform_device_unregister(corgi_snd_device);
 344 }
 345
 346 module_init(corgi_init);
 347 module_exit(corgi_exit);
 348
 349 /* Module information */
 350 MODULE_AUTHOR("Richard Purdie");
 351 MODULE_DESCRIPTION("ALSA SoC Corgi");
 352 MODULE_LICENSE("GPL");