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/interrupt.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/gpio.h>
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/soc.h>
  25 #include <sound/soc-dapm.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <mach/pxa-regs.h>
  29 #include <mach/hardware.h>
  30 #include <mach/corgi.h>
  31 #include <mach/audio.h>
  32
  33 #include "../codecs/wm8731.h"
  34 #include "pxa2xx-pcm.h"
  35 #include "pxa2xx-i2s.h"
  36
  37 #define CORGI_HP        0
  38 #define CORGI_MIC       1
  39 #define CORGI_LINE      2
  40 #define CORGI_HEADSET   3
  41 #define CORGI_HP_OFF    4
  42 #define CORGI_SPK_ON    0
  43 #define CORGI_SPK_OFF   1
  44
  45  /* audio clock in Hz - rounded from 12.235MHz */
  46 #define CORGI_AUDIO_CLOCK 12288000
  47
  48 static int corgi_jack_func;
  49 static int corgi_spk_func;
  50
  51 static void corgi_ext_control(struct snd_soc_codec *codec)
  52 {
  53         /* set up jack connection */
  54         switch (corgi_jack_func) {
  55         case CORGI_HP:
  56                 /* set = unmute headphone */
  57                 gpio_set_value(CORGI_GPIO_MUTE_L, 1);
  58                 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
  59                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  60                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  61                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  62                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  63                 break;
  64         case CORGI_MIC:
  65                 /* reset = mute headphone */
  66                 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
  67                 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
  68                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  69                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  70                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  71                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  72                 break;
  73         case CORGI_LINE:
  74                 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
  75                 gpio_set_value(CORGI_GPIO_MUTE_R, 0);
  76                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  77                 snd_soc_dapm_enable_pin(codec, "Line Jack");
  78                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  79                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  80                 break;
  81         case CORGI_HEADSET:
  82                 gpio_set_value(CORGI_GPIO_MUTE_L, 0);
  83                 gpio_set_value(CORGI_GPIO_MUTE_R, 1);
  84                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  85                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  86                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  87                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  88                 break;
  89         }
  90
  91         if (corgi_spk_func == CORGI_SPK_ON)
  92                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  93         else
  94                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  95
  96         /* signal a DAPM event */
  97         snd_soc_dapm_sync(codec);
  98 }
  99
 100 static int corgi_startup(struct snd_pcm_substream *substream)
 101 {
 102         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 103         struct snd_soc_codec *codec = rtd->socdev->codec;
 104
 105         /* check the jack status at stream startup */
 106         corgi_ext_control(codec);
 107         return 0;
 108 }
 109
 110 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
 111 static void corgi_shutdown(struct snd_pcm_substream *substream)
 112 {
 113         /* set = unmute headphone */
 114         gpio_set_value(CORGI_GPIO_MUTE_L, 1);
 115         gpio_set_value(CORGI_GPIO_MUTE_R, 1);
 116 }
 117
 118 static int corgi_hw_params(struct snd_pcm_substream *substream,
 119         struct snd_pcm_hw_params *params)
 120 {
 121         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 122         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 123         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 124         unsigned int clk = 0;
 125         int ret = 0;
 126
 127         switch (params_rate(params)) {
 128         case 8000:
 129         case 16000:
 130         case 48000:
 131         case 96000:
 132                 clk = 12288000;
 133                 break;
 134         case 11025:
 135         case 22050:
 136         case 44100:
 137                 clk = 11289600;
 138                 break;
 139         }
 140
 141         /* set codec DAI configuration */
 142         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 143                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 144         if (ret < 0)
 145                 return ret;
 146
 147         /* set cpu DAI configuration */
 148         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 149                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 150         if (ret < 0)
 151                 return ret;
 152
 153         /* set the codec system clock for DAC and ADC */
 154         ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
 155                 SND_SOC_CLOCK_IN);
 156         if (ret < 0)
 157                 return ret;
 158
 159         /* set the I2S system clock as input (unused) */
 160         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 161                 SND_SOC_CLOCK_IN);
 162         if (ret < 0)
 163                 return ret;
 164
 165         return 0;
 166 }
 167
 168 static struct snd_soc_ops corgi_ops = {
 169         .startup = corgi_startup,
 170         .hw_params = corgi_hw_params,
 171         .shutdown = corgi_shutdown,
 172 };
 173
 174 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
 175         struct snd_ctl_elem_value *ucontrol)
 176 {
 177         ucontrol->value.integer.value[0] = corgi_jack_func;
 178         return 0;
 179 }
 180
 181 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
 182         struct snd_ctl_elem_value *ucontrol)
 183 {
 184         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 185
 186         if (corgi_jack_func == ucontrol->value.integer.value[0])
 187                 return 0;
 188
 189         corgi_jack_func = ucontrol->value.integer.value[0];
 190         corgi_ext_control(codec);
 191         return 1;
 192 }
 193
 194 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
 195         struct snd_ctl_elem_value *ucontrol)
 196 {
 197         ucontrol->value.integer.value[0] = corgi_spk_func;
 198         return 0;
 199 }
 200
 201 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
 202         struct snd_ctl_elem_value *ucontrol)
 203 {
 204         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 205
 206         if (corgi_spk_func == ucontrol->value.integer.value[0])
 207                 return 0;
 208
 209         corgi_spk_func = ucontrol->value.integer.value[0];
 210         corgi_ext_control(codec);
 211         return 1;
 212 }
 213
 214 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
 215         struct snd_kcontrol *k, int event)
 216 {
 217         gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
 218         return 0;
 219 }
 220
 221 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
 222         struct snd_kcontrol *k, int event)
 223 {
 224         gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
 225         return 0;
 226 }
 227
 228 /* corgi machine dapm widgets */
 229 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 230 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 231 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
 232 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
 233 SND_SOC_DAPM_LINE("Line Jack", NULL),
 234 SND_SOC_DAPM_HP("Headset Jack", NULL),
 235 };
 236
 237 /* Corgi machine audio map (connections to the codec pins) */
 238 static const struct snd_soc_dapm_route audio_map[] = {
 239
 240         /* headset Jack  - in = micin, out = LHPOUT*/
 241         {"Headset Jack", NULL, "LHPOUT"},
 242
 243         /* headphone connected to LHPOUT1, RHPOUT1 */
 244         {"Headphone Jack", NULL, "LHPOUT"},
 245         {"Headphone Jack", NULL, "RHPOUT"},
 246
 247         /* speaker connected to LOUT, ROUT */
 248         {"Ext Spk", NULL, "ROUT"},
 249         {"Ext Spk", NULL, "LOUT"},
 250
 251         /* mic is connected to MICIN (via right channel of headphone jack) */
 252         {"MICIN", NULL, "Mic Jack"},
 253
 254         /* Same as the above but no mic bias for line signals */
 255         {"MICIN", NULL, "Line Jack"},
 256 };
 257
 258 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 259         "Off"};
 260 static const char *spk_function[] = {"On", "Off"};
 261 static const struct soc_enum corgi_enum[] = {
 262         SOC_ENUM_SINGLE_EXT(5, jack_function),
 263         SOC_ENUM_SINGLE_EXT(2, spk_function),
 264 };
 265
 266 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
 267         SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
 268                 corgi_set_jack),
 269         SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
 270                 corgi_set_spk),
 271 };
 272
 273 /*
 274  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 275  */
 276 static int corgi_wm8731_init(struct snd_soc_codec *codec)
 277 {
 278         int i, err;
 279
 280         snd_soc_dapm_nc_pin(codec, "LLINEIN");
 281         snd_soc_dapm_nc_pin(codec, "RLINEIN");
 282
 283         /* Add corgi specific controls */
 284         for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) {
 285                 err = snd_ctl_add(codec->card,
 286                         snd_soc_cnew(&wm8731_corgi_controls[i], codec, NULL));
 287                 if (err < 0)
 288                         return err;
 289         }
 290
 291         /* Add corgi specific widgets */
 292         snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
 293                                   ARRAY_SIZE(wm8731_dapm_widgets));
 294
 295         /* Set up corgi specific audio path audio_map */
 296         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 297
 298         snd_soc_dapm_sync(codec);
 299         return 0;
 300 }
 301
 302 /* corgi digital audio interface glue - connects codec <--> CPU */
 303 static struct snd_soc_dai_link corgi_dai = {
 304         .name = "WM8731",
 305         .stream_name = "WM8731",
 306         .cpu_dai = &pxa_i2s_dai,
 307         .codec_dai = &wm8731_dai,
 308         .init = corgi_wm8731_init,
 309         .ops = &corgi_ops,
 310 };
 311
 312 /* corgi audio machine driver */
 313 static struct snd_soc_card snd_soc_corgi = {
 314         .name = "Corgi",
 315         .platform = &pxa2xx_soc_platform,
 316         .dai_link = &corgi_dai,
 317         .num_links = 1,
 318 };
 319
 320 /* corgi audio private data */
 321 static struct wm8731_setup_data corgi_wm8731_setup = {
 322         .i2c_bus = 0,
 323         .i2c_address = 0x1b,
 324 };
 325
 326 /* corgi audio subsystem */
 327 static struct snd_soc_device corgi_snd_devdata = {
 328         .card = &snd_soc_corgi,
 329         .codec_dev = &soc_codec_dev_wm8731,
 330         .codec_data = &corgi_wm8731_setup,
 331 };
 332
 333 static struct platform_device *corgi_snd_device;
 334
 335 static int __init corgi_init(void)
 336 {
 337         int ret;
 338
 339         if (!(machine_is_corgi() || machine_is_shepherd() ||
 340               machine_is_husky()))
 341                 return -ENODEV;
 342
 343         corgi_snd_device = platform_device_alloc("soc-audio", -1);
 344         if (!corgi_snd_device)
 345                 return -ENOMEM;
 346
 347         platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
 348         corgi_snd_devdata.dev = &corgi_snd_device->dev;
 349         ret = platform_device_add(corgi_snd_device);
 350
 351         if (ret)
 352                 platform_device_put(corgi_snd_device);
 353
 354         return ret;
 355 }
 356
 357 static void __exit corgi_exit(void)
 358 {
 359         platform_device_unregister(corgi_snd_device);
 360 }
 361
 362 module_init(corgi_init);
 363 module_exit(corgi_exit);
 364
 365 /* Module information */
 366 MODULE_AUTHOR("Richard Purdie");
 367 MODULE_DESCRIPTION("ALSA SoC Corgi");
 368 MODULE_LICENSE("GPL");