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 <liam.girdwood@wolfsonmicro.com>
   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 <sound/core.h>
  22 #include <sound/pcm.h>
  23 #include <sound/soc.h>
  24 #include <sound/soc-dapm.h>
  25
  26 #include <asm/mach-types.h>
  27 #include <asm/hardware/scoop.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                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  58                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  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                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  67                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  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                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  75                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  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                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  83                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  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 int corgi_shutdown(struct snd_pcm_substream *substream)
 112 {
 113         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 114         struct snd_soc_codec *codec = rtd->socdev->codec;
 115
 116         /* set = unmute headphone */
 117         set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
 118         set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
 119         return 0;
 120 }
 121
 122 static int corgi_hw_params(struct snd_pcm_substream *substream,
 123         struct snd_pcm_hw_params *params)
 124 {
 125         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 126         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 127         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 128         unsigned int clk = 0;
 129         int ret = 0;
 130
 131         switch (params_rate(params)) {
 132         case 8000:
 133         case 16000:
 134         case 48000:
 135         case 96000:
 136                 clk = 12288000;
 137                 break;
 138         case 11025:
 139         case 22050:
 140         case 44100:
 141                 clk = 11289600;
 142                 break;
 143         }
 144
 145         /* set codec DAI configuration */
 146         ret = snd_soc_dai_set_fmt(codec_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 cpu DAI configuration */
 152         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 153                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 154         if (ret < 0)
 155                 return ret;
 156
 157         /* set the codec system clock for DAC and ADC */
 158         ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
 159                 SND_SOC_CLOCK_IN);
 160         if (ret < 0)
 161                 return ret;
 162
 163         /* set the I2S system clock as input (unused) */
 164         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 165                 SND_SOC_CLOCK_IN);
 166         if (ret < 0)
 167                 return ret;
 168
 169         return 0;
 170 }
 171
 172 static struct snd_soc_ops corgi_ops = {
 173         .startup = corgi_startup,
 174         .hw_params = corgi_hw_params,
 175         .shutdown = corgi_shutdown,
 176 };
 177
 178 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
 179         struct snd_ctl_elem_value *ucontrol)
 180 {
 181         ucontrol->value.integer.value[0] = corgi_jack_func;
 182         return 0;
 183 }
 184
 185 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
 186         struct snd_ctl_elem_value *ucontrol)
 187 {
 188         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 189
 190         if (corgi_jack_func == ucontrol->value.integer.value[0])
 191                 return 0;
 192
 193         corgi_jack_func = ucontrol->value.integer.value[0];
 194         corgi_ext_control(codec);
 195         return 1;
 196 }
 197
 198 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
 199         struct snd_ctl_elem_value *ucontrol)
 200 {
 201         ucontrol->value.integer.value[0] = corgi_spk_func;
 202         return 0;
 203 }
 204
 205 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
 206         struct snd_ctl_elem_value *ucontrol)
 207 {
 208         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 209
 210         if (corgi_spk_func == ucontrol->value.integer.value[0])
 211                 return 0;
 212
 213         corgi_spk_func = ucontrol->value.integer.value[0];
 214         corgi_ext_control(codec);
 215         return 1;
 216 }
 217
 218 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
 219         struct snd_kcontrol *k, int event)
 220 {
 221         if (SND_SOC_DAPM_EVENT_ON(event))
 222                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
 223         else
 224                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
 225
 226         return 0;
 227 }
 228
 229 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
 230         struct snd_kcontrol *k, int event)
 231 {
 232         if (SND_SOC_DAPM_EVENT_ON(event))
 233                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
 234         else
 235                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
 236
 237         return 0;
 238 }
 239
 240 /* corgi machine dapm widgets */
 241 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 242 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 243 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
 244 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
 245 SND_SOC_DAPM_LINE("Line Jack", NULL),
 246 SND_SOC_DAPM_HP("Headset Jack", NULL),
 247 };
 248
 249 /* Corgi machine audio map (connections to the codec pins) */
 250 static const struct snd_soc_dapm_route audio_map[] = {
 251
 252         /* headset Jack  - in = micin, out = LHPOUT*/
 253         {"Headset Jack", NULL, "LHPOUT"},
 254
 255         /* headphone connected to LHPOUT1, RHPOUT1 */
 256         {"Headphone Jack", NULL, "LHPOUT"},
 257         {"Headphone Jack", NULL, "RHPOUT"},
 258
 259         /* speaker connected to LOUT, ROUT */
 260         {"Ext Spk", NULL, "ROUT"},
 261         {"Ext Spk", NULL, "LOUT"},
 262
 263         /* mic is connected to MICIN (via right channel of headphone jack) */
 264         {"MICIN", NULL, "Mic Jack"},
 265
 266         /* Same as the above but no mic bias for line signals */
 267         {"MICIN", NULL, "Line Jack"},
 268 };
 269
 270 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 271         "Off"};
 272 static const char *spk_function[] = {"On", "Off"};
 273 static const struct soc_enum corgi_enum[] = {
 274         SOC_ENUM_SINGLE_EXT(5, jack_function),
 275         SOC_ENUM_SINGLE_EXT(2, spk_function),
 276 };
 277
 278 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
 279         SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
 280                 corgi_set_jack),
 281         SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
 282                 corgi_set_spk),
 283 };
 284
 285 /*
 286  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 287  */
 288 static int corgi_wm8731_init(struct snd_soc_codec *codec)
 289 {
 290         int i, err;
 291
 292         snd_soc_dapm_disable_pin(codec, "LLINEIN");
 293         snd_soc_dapm_disable_pin(codec, "RLINEIN");
 294
 295         /* Add corgi specific controls */
 296         for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) {
 297                 err = snd_ctl_add(codec->card,
 298                         snd_soc_cnew(&wm8731_corgi_controls[i], codec, NULL));
 299                 if (err < 0)
 300                         return err;
 301         }
 302
 303         /* Add corgi specific widgets */
 304         snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
 305                                   ARRAY_SIZE(wm8731_dapm_widgets));
 306
 307         /* Set up corgi specific audio path audio_map */
 308         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 309
 310         snd_soc_dapm_sync(codec);
 311         return 0;
 312 }
 313
 314 /* corgi digital audio interface glue - connects codec <--> CPU */
 315 static struct snd_soc_dai_link corgi_dai = {
 316         .name = "WM8731",
 317         .stream_name = "WM8731",
 318         .cpu_dai = &pxa_i2s_dai,
 319         .codec_dai = &wm8731_dai,
 320         .init = corgi_wm8731_init,
 321         .ops = &corgi_ops,
 322 };
 323
 324 /* corgi audio machine driver */
 325 static struct snd_soc_machine snd_soc_machine_corgi = {
 326         .name = "Corgi",
 327         .dai_link = &corgi_dai,
 328         .num_links = 1,
 329 };
 330
 331 /* corgi audio private data */
 332 static struct wm8731_setup_data corgi_wm8731_setup = {
 333         .i2c_address = 0x1b,
 334 };
 335
 336 /* corgi audio subsystem */
 337 static struct snd_soc_device corgi_snd_devdata = {
 338         .machine = &snd_soc_machine_corgi,
 339         .platform = &pxa2xx_soc_platform,
 340         .codec_dev = &soc_codec_dev_wm8731,
 341         .codec_data = &corgi_wm8731_setup,
 342 };
 343
 344 static struct platform_device *corgi_snd_device;
 345
 346 static int __init corgi_init(void)
 347 {
 348         int ret;
 349
 350         if (!(machine_is_corgi() || machine_is_shepherd() ||
 351               machine_is_husky()))
 352                 return -ENODEV;
 353
 354         corgi_snd_device = platform_device_alloc("soc-audio", -1);
 355         if (!corgi_snd_device)
 356                 return -ENOMEM;
 357
 358         platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
 359         corgi_snd_devdata.dev = &corgi_snd_device->dev;
 360         ret = platform_device_add(corgi_snd_device);
 361
 362         if (ret)
 363                 platform_device_put(corgi_snd_device);
 364
 365         return ret;
 366 }
 367
 368 static void __exit corgi_exit(void)
 369 {
 370         platform_device_unregister(corgi_snd_device);
 371 }
 372
 373 module_init(corgi_init);
 374 module_exit(corgi_exit);
 375
 376 /* Module information */
 377 MODULE_AUTHOR("Richard Purdie");
 378 MODULE_DESCRIPTION("ALSA SoC Corgi");
 379 MODULE_LICENSE("GPL");