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
  41 #define CORGI_HP        0
  42 #define CORGI_MIC       1
  43 #define CORGI_LINE      2
  44 #define CORGI_HEADSET   3
  45 #define CORGI_HP_OFF    4
  46 #define CORGI_SPK_ON    0
  47 #define CORGI_SPK_OFF   1
  48
  49  /* audio clock in Hz - rounded from 12.235MHz */
  50 #define CORGI_AUDIO_CLOCK 12288000
  51
  52 static int corgi_jack_func;
  53 static int corgi_spk_func;
  54
  55 static void corgi_ext_control(struct snd_soc_codec *codec)
  56 {
  57         int spk = 0, mic = 0, line = 0, hp = 0, hs = 0;
  58
  59         /* set up jack connection */
  60         switch (corgi_jack_func) {
  61         case CORGI_HP:
  62                 hp = 1;
  63                 /* set = unmute headphone */
  64                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  65                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  66                 break;
  67         case CORGI_MIC:
  68                 mic = 1;
  69                 /* reset = mute headphone */
  70                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  71                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  72                 break;
  73         case CORGI_LINE:
  74                 line = 1;
  75                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  76                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  77                 break;
  78         case CORGI_HEADSET:
  79                 hs = 1;
  80                 mic = 1;
  81                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  82                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  83                 break;
  84         }
  85
  86         if (corgi_spk_func == CORGI_SPK_ON)
  87                 spk = 1;
  88
  89         /* set the enpoints to their new connetion states */
  90         snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
  91         snd_soc_dapm_set_endpoint(codec, "Mic Jack", mic);
  92         snd_soc_dapm_set_endpoint(codec, "Line Jack", line);
  93         snd_soc_dapm_set_endpoint(codec, "Headphone Jack", hp);
  94         snd_soc_dapm_set_endpoint(codec, "Headset Jack", hs);
  95
  96         /* signal a DAPM event */
  97         snd_soc_dapm_sync_endpoints(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 struct snd_soc_ops corgi_ops = {
 123         .startup = corgi_startup,
 124         .shutdown = corgi_shutdown,
 125 };
 126
 127 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
 128         struct snd_ctl_elem_value *ucontrol)
 129 {
 130         ucontrol->value.integer.value[0] = corgi_jack_func;
 131         return 0;
 132 }
 133
 134 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
 135         struct snd_ctl_elem_value *ucontrol)
 136 {
 137         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 138
 139         if (corgi_jack_func == ucontrol->value.integer.value[0])
 140                 return 0;
 141
 142         corgi_jack_func = ucontrol->value.integer.value[0];
 143         corgi_ext_control(codec);
 144         return 1;
 145 }
 146
 147 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
 148         struct snd_ctl_elem_value *ucontrol)
 149 {
 150         ucontrol->value.integer.value[0] = corgi_spk_func;
 151         return 0;
 152 }
 153
 154 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
 155         struct snd_ctl_elem_value *ucontrol)
 156 {
 157         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 158
 159         if (corgi_spk_func == ucontrol->value.integer.value[0])
 160                 return 0;
 161
 162         corgi_spk_func = ucontrol->value.integer.value[0];
 163         corgi_ext_control(codec);
 164         return 1;
 165 }
 166
 167 static int corgi_amp_event(struct snd_soc_dapm_widget *w, int event)
 168 {
 169         if (SND_SOC_DAPM_EVENT_ON(event))
 170                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
 171         else
 172                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
 173
 174         return 0;
 175 }
 176
 177 static int corgi_mic_event(struct snd_soc_dapm_widget *w, int event)
 178 {
 179         if (SND_SOC_DAPM_EVENT_ON(event))
 180                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
 181         else
 182                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
 183
 184         return 0;
 185 }
 186
 187 /* corgi machine dapm widgets */
 188 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 189 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 190 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
 191 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
 192 SND_SOC_DAPM_LINE("Line Jack", NULL),
 193 SND_SOC_DAPM_HP("Headset Jack", NULL),
 194 };
 195
 196 /* Corgi machine audio map (connections to the codec pins) */
 197 static const char *audio_map[][3] = {
 198
 199         /* headset Jack  - in = micin, out = LHPOUT*/
 200         {"Headset Jack", NULL, "LHPOUT"},
 201
 202         /* headphone connected to LHPOUT1, RHPOUT1 */
 203         {"Headphone Jack", NULL, "LHPOUT"},
 204         {"Headphone Jack", NULL, "RHPOUT"},
 205
 206         /* speaker connected to LOUT, ROUT */
 207         {"Ext Spk", NULL, "ROUT"},
 208         {"Ext Spk", NULL, "LOUT"},
 209
 210         /* mic is connected to MICIN (via right channel of headphone jack) */
 211         {"MICIN", NULL, "Mic Jack"},
 212
 213         /* Same as the above but no mic bias for line signals */
 214         {"MICIN", NULL, "Line Jack"},
 215
 216         {NULL, NULL, NULL},
 217 };
 218
 219 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 220         "Off"};
 221 static const char *spk_function[] = {"On", "Off"};
 222 static const struct soc_enum corgi_enum[] = {
 223         SOC_ENUM_SINGLE_EXT(5, jack_function),
 224         SOC_ENUM_SINGLE_EXT(2, spk_function),
 225 };
 226
 227 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
 228         SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
 229                 corgi_set_jack),
 230         SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
 231                 corgi_set_spk),
 232 };
 233
 234 /*
 235  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 236  */
 237 static int corgi_wm8731_init(struct snd_soc_codec *codec)
 238 {
 239         int i, err;
 240
 241         snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
 242         snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
 243
 244         /* Add corgi specific controls */
 245         for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) {
 246                 err = snd_ctl_add(codec->card,
 247                         snd_soc_cnew(&wm8731_corgi_controls[i],codec, NULL));
 248                 if (err < 0)
 249                         return err;
 250         }
 251
 252         /* Add corgi specific widgets */
 253         for(i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
 254                 snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
 255         }
 256
 257         /* Set up corgi specific audio path audio_map */
 258         for(i = 0; audio_map[i][0] != NULL; i++) {
 259                 snd_soc_dapm_connect_input(codec, audio_map[i][0],
 260                         audio_map[i][1], audio_map[i][2]);
 261         }
 262
 263         snd_soc_dapm_sync_endpoints(codec);
 264         return 0;
 265 }
 266
 267 static unsigned int corgi_config_sysclk(struct snd_soc_pcm_runtime *rtd,
 268         struct snd_soc_clock_info *info)
 269 {
 270         if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) {
 271                 /* pxa2xx is i2s master  */
 272                 switch (info->rate) {
 273                 case 44100:
 274                 case 88200:
 275                         /* configure codec digital filters for 44.1, 88.2 */
 276                         rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
 277                                 11289600);
 278                 break;
 279                 default:
 280                         /* configure codec digital filters for all other rates */
 281                         rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
 282                                 CORGI_AUDIO_CLOCK);
 283                 break;
 284                 }
 285                 /* config pxa i2s as master */
 286                 return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info,
 287                         CORGI_AUDIO_CLOCK);
 288         } else {
 289                 /* codec is i2s master -
 290                  * only configure codec DAI clock and filters */
 291                 return rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
 292                         CORGI_AUDIO_CLOCK);
 293         }
 294 }
 295
 296 /* corgi digital audio interface glue - connects codec <--> CPU */
 297 static struct snd_soc_dai_link corgi_dai = {
 298         .name = "WM8731",
 299         .stream_name = "WM8731",
 300         .cpu_dai = &pxa_i2s_dai,
 301         .codec_dai = &wm8731_dai,
 302         .init = corgi_wm8731_init,
 303         .config_sysclk = corgi_config_sysclk,
 304 };
 305
 306 /* corgi audio machine driver */
 307 static struct snd_soc_machine snd_soc_machine_corgi = {
 308         .name = "Corgi",
 309         .dai_link = &corgi_dai,
 310         .num_links = 1,
 311         .ops = &corgi_ops,
 312 };
 313
 314 /* corgi audio private data */
 315 static struct wm8731_setup_data corgi_wm8731_setup = {
 316         .i2c_address = 0x1b,
 317 };
 318
 319 /* corgi audio subsystem */
 320 static struct snd_soc_device corgi_snd_devdata = {
 321         .machine = &snd_soc_machine_corgi,
 322         .platform = &pxa2xx_soc_platform,
 323         .codec_dev = &soc_codec_dev_wm8731,
 324         .codec_data = &corgi_wm8731_setup,
 325 };
 326
 327 static struct platform_device *corgi_snd_device;
 328
 329 static int __init corgi_init(void)
 330 {
 331         int ret;
 332
 333         if (!(machine_is_corgi() || machine_is_shepherd() || machine_is_husky()))
 334                 return -ENODEV;
 335
 336         corgi_snd_device = platform_device_alloc("soc-audio", -1);
 337         if (!corgi_snd_device)
 338                 return -ENOMEM;
 339
 340         platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
 341         corgi_snd_devdata.dev = &corgi_snd_device->dev;
 342         ret = platform_device_add(corgi_snd_device);
 343
 344         if (ret)
 345                 platform_device_put(corgi_snd_device);
 346
 347         return ret;
 348 }
 349
 350 static void __exit corgi_exit(void)
 351 {
 352         platform_device_unregister(corgi_snd_device);
 353 }
 354
 355 module_init(corgi_init);
 356 module_exit(corgi_exit);
 357
 358 /* Module information */
 359 MODULE_AUTHOR("Richard Purdie");
 360 MODULE_DESCRIPTION("ALSA SoC Corgi");
 361 MODULE_LICENSE("GPL");