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  *  Revision history
  16  *    30th Nov 2005   Initial version.
  17  *
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/moduleparam.h>
  22 #include <linux/timer.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/platform_device.h>
  25 #include <sound/driver.h>
  26 #include <sound/core.h>
  27 #include <sound/pcm.h>
  28 #include <sound/soc.h>
  29 #include <sound/soc-dapm.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <asm/hardware/scoop.h>
  33 #include <asm/arch/pxa-regs.h>
  34 #include <asm/arch/hardware.h>
  35 #include <asm/arch/corgi.h>
  36 #include <asm/arch/audio.h>
  37
  38 #include "../codecs/wm8731.h"
  39 #include "pxa2xx-pcm.h"
  40 #include "pxa2xx-i2s.h"
  41
  42 #define CORGI_HP        0
  43 #define CORGI_MIC       1
  44 #define CORGI_LINE      2
  45 #define CORGI_HEADSET   3
  46 #define CORGI_HP_OFF    4
  47 #define CORGI_SPK_ON    0
  48 #define CORGI_SPK_OFF   1
  49
  50  /* audio clock in Hz - rounded from 12.235MHz */
  51 #define CORGI_AUDIO_CLOCK 12288000
  52
  53 static int corgi_jack_func;
  54 static int corgi_spk_func;
  55
  56 static void corgi_ext_control(struct snd_soc_codec *codec)
  57 {
  58         int spk = 0, mic = 0, line = 0, hp = 0, hs = 0;
  59
  60         /* set up jack connection */
  61         switch (corgi_jack_func) {
  62         case CORGI_HP:
  63                 hp = 1;
  64                 /* set = unmute headphone */
  65                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  66                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  67                 break;
  68         case CORGI_MIC:
  69                 mic = 1;
  70                 /* reset = mute headphone */
  71                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  72                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  73                 break;
  74         case CORGI_LINE:
  75                 line = 1;
  76                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  77                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  78                 break;
  79         case CORGI_HEADSET:
  80                 hs = 1;
  81                 mic = 1;
  82                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  83                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  84                 break;
  85         }
  86
  87         if (corgi_spk_func == CORGI_SPK_ON)
  88                 spk = 1;
  89
  90         /* set the enpoints to their new connetion states */
  91         snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
  92         snd_soc_dapm_set_endpoint(codec, "Mic Jack", mic);
  93         snd_soc_dapm_set_endpoint(codec, "Line Jack", line);
  94         snd_soc_dapm_set_endpoint(codec, "Headphone Jack", hp);
  95         snd_soc_dapm_set_endpoint(codec, "Headset Jack", hs);
  96
  97         /* signal a DAPM event */
  98         snd_soc_dapm_sync_endpoints(codec);
  99 }
 100
 101 static int corgi_startup(struct snd_pcm_substream *substream)
 102 {
 103         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 104         struct snd_soc_codec *codec = rtd->socdev->codec;
 105
 106         /* check the jack status at stream startup */
 107         corgi_ext_control(codec);
 108         return 0;
 109 }
 110
 111 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
 112 static int corgi_shutdown(struct snd_pcm_substream *substream)
 113 {
 114         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 115         struct snd_soc_codec *codec = rtd->socdev->codec;
 116
 117         /* set = unmute headphone */
 118         set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
 119         set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
 120         return 0;
 121 }
 122
 123 static int corgi_hw_params(struct snd_pcm_substream *substream,
 124         struct snd_pcm_hw_params *params)
 125 {
 126         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 127         struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
 128         struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
 129         unsigned int clk = 0;
 130         int ret = 0;
 131
 132         switch (params_rate(params)) {
 133         case 8000:
 134         case 16000:
 135         case 48000:
 136         case 96000:
 137                 clk = 12288000;
 138                 break;
 139         case 11025:
 140         case 22050:
 141         case 44100:
 142                 clk = 11289600;
 143                 break;
 144         }
 145
 146         /* set codec DAI configuration */
 147         ret = codec_dai->dai_ops.set_fmt(codec_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 cpu DAI configuration */
 153         ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 154                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 155         if (ret < 0)
 156                 return ret;
 157
 158         /* set the codec system clock for DAC and ADC */
 159         ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_SYSCLK, clk,
 160                 SND_SOC_CLOCK_IN);
 161         if (ret < 0)
 162                 return ret;
 163
 164         /* set the I2S system clock as input (unused) */
 165         ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 166                 SND_SOC_CLOCK_IN);
 167         if (ret < 0)
 168                 return ret;
 169
 170         return 0;
 171 }
 172
 173 static struct snd_soc_ops corgi_ops = {
 174         .startup = corgi_startup,
 175         .hw_params = corgi_hw_params,
 176         .shutdown = corgi_shutdown,
 177 };
 178
 179 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
 180         struct snd_ctl_elem_value *ucontrol)
 181 {
 182         ucontrol->value.integer.value[0] = corgi_jack_func;
 183         return 0;
 184 }
 185
 186 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
 187         struct snd_ctl_elem_value *ucontrol)
 188 {
 189         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 190
 191         if (corgi_jack_func == ucontrol->value.integer.value[0])
 192                 return 0;
 193
 194         corgi_jack_func = ucontrol->value.integer.value[0];
 195         corgi_ext_control(codec);
 196         return 1;
 197 }
 198
 199 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
 200         struct snd_ctl_elem_value *ucontrol)
 201 {
 202         ucontrol->value.integer.value[0] = corgi_spk_func;
 203         return 0;
 204 }
 205
 206 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
 207         struct snd_ctl_elem_value *ucontrol)
 208 {
 209         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 210
 211         if (corgi_spk_func == ucontrol->value.integer.value[0])
 212                 return 0;
 213
 214         corgi_spk_func = ucontrol->value.integer.value[0];
 215         corgi_ext_control(codec);
 216         return 1;
 217 }
 218
 219 static int corgi_amp_event(struct snd_soc_dapm_widget *w, 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, int event)
 230 {
 231         if (SND_SOC_DAPM_EVENT_ON(event))
 232                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
 233         else
 234                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
 235
 236         return 0;
 237 }
 238
 239 /* corgi machine dapm widgets */
 240 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 241 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 242 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
 243 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
 244 SND_SOC_DAPM_LINE("Line Jack", NULL),
 245 SND_SOC_DAPM_HP("Headset Jack", NULL),
 246 };
 247
 248 /* Corgi machine audio map (connections to the codec pins) */
 249 static const char *audio_map[][3] = {
 250
 251         /* headset Jack  - in = micin, out = LHPOUT*/
 252         {"Headset Jack", NULL, "LHPOUT"},
 253
 254         /* headphone connected to LHPOUT1, RHPOUT1 */
 255         {"Headphone Jack", NULL, "LHPOUT"},
 256         {"Headphone Jack", NULL, "RHPOUT"},
 257
 258         /* speaker connected to LOUT, ROUT */
 259         {"Ext Spk", NULL, "ROUT"},
 260         {"Ext Spk", NULL, "LOUT"},
 261
 262         /* mic is connected to MICIN (via right channel of headphone jack) */
 263         {"MICIN", NULL, "Mic Jack"},
 264
 265         /* Same as the above but no mic bias for line signals */
 266         {"MICIN", NULL, "Line Jack"},
 267
 268         {NULL, NULL, NULL},
 269 };
 270
 271 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 272         "Off"};
 273 static const char *spk_function[] = {"On", "Off"};
 274 static const struct soc_enum corgi_enum[] = {
 275         SOC_ENUM_SINGLE_EXT(5, jack_function),
 276         SOC_ENUM_SINGLE_EXT(2, spk_function),
 277 };
 278
 279 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
 280         SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
 281                 corgi_set_jack),
 282         SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
 283                 corgi_set_spk),
 284 };
 285
 286 /*
 287  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 288  */
 289 static int corgi_wm8731_init(struct snd_soc_codec *codec)
 290 {
 291         int i, err;
 292
 293         snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
 294         snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
 295
 296         /* Add corgi specific controls */
 297         for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) {
 298                 err = snd_ctl_add(codec->card,
 299                         snd_soc_cnew(&wm8731_corgi_controls[i],codec, NULL));
 300                 if (err < 0)
 301                         return err;
 302         }
 303
 304         /* Add corgi specific widgets */
 305         for(i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
 306                 snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
 307         }
 308
 309         /* Set up corgi specific audio path audio_map */
 310         for(i = 0; audio_map[i][0] != NULL; i++) {
 311                 snd_soc_dapm_connect_input(codec, audio_map[i][0],
 312                         audio_map[i][1], audio_map[i][2]);
 313         }
 314
 315         snd_soc_dapm_sync_endpoints(codec);
 316         return 0;
 317 }
 318
 319 /* corgi digital audio interface glue - connects codec <--> CPU */
 320 static struct snd_soc_dai_link corgi_dai = {
 321         .name = "WM8731",
 322         .stream_name = "WM8731",
 323         .cpu_dai = &pxa_i2s_dai,
 324         .codec_dai = &wm8731_dai,
 325         .init = corgi_wm8731_init,
 326         .ops = &corgi_ops,
 327 };
 328
 329 /* corgi audio machine driver */
 330 static struct snd_soc_machine snd_soc_machine_corgi = {
 331         .name = "Corgi",
 332         .dai_link = &corgi_dai,
 333         .num_links = 1,
 334 };
 335
 336 /* corgi audio private data */
 337 static struct wm8731_setup_data corgi_wm8731_setup = {
 338         .i2c_address = 0x1b,
 339 };
 340
 341 /* corgi audio subsystem */
 342 static struct snd_soc_device corgi_snd_devdata = {
 343         .machine = &snd_soc_machine_corgi,
 344         .platform = &pxa2xx_soc_platform,
 345         .codec_dev = &soc_codec_dev_wm8731,
 346         .codec_data = &corgi_wm8731_setup,
 347 };
 348
 349 static struct platform_device *corgi_snd_device;
 350
 351 static int __init corgi_init(void)
 352 {
 353         int ret;
 354
 355         if (!(machine_is_corgi() || machine_is_shepherd() || machine_is_husky()))
 356                 return -ENODEV;
 357
 358         corgi_snd_device = platform_device_alloc("soc-audio", -1);
 359         if (!corgi_snd_device)
 360                 return -ENOMEM;
 361
 362         platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
 363         corgi_snd_devdata.dev = &corgi_snd_device->dev;
 364         ret = platform_device_add(corgi_snd_device);
 365
 366         if (ret)
 367                 platform_device_put(corgi_snd_device);
 368
 369         return ret;
 370 }
 371
 372 static void __exit corgi_exit(void)
 373 {
 374         platform_device_unregister(corgi_snd_device);
 375 }
 376
 377 module_init(corgi_init);
 378 module_exit(corgi_exit);
 379
 380 /* Module information */
 381 MODULE_AUTHOR("Richard Purdie");
 382 MODULE_DESCRIPTION("ALSA SoC Corgi");
 383 MODULE_LICENSE("GPL");