sound/soc/pxa/spitz.c

   1 /*
   2  * spitz.c  --  SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
   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/akita.h>
  36 #include <asm/arch/spitz.h>
  37 #include <asm/mach-types.h>
  38 #include "../codecs/wm8750.h"
  39 #include "pxa2xx-pcm.h"
  40
  41 #define SPITZ_HP        0
  42 #define SPITZ_MIC       1
  43 #define SPITZ_LINE      2
  44 #define SPITZ_HEADSET   3
  45 #define SPITZ_HP_OFF    4
  46 #define SPITZ_SPK_ON    0
  47 #define SPITZ_SPK_OFF   1
  48
  49  /* audio clock in Hz - rounded from 12.235MHz */
  50 #define SPITZ_AUDIO_CLOCK 12288000
  51
  52 static int spitz_jack_func;
  53 static int spitz_spk_func;
  54
  55 static void spitz_ext_control(struct snd_soc_codec *codec)
  56 {
  57         if (spitz_spk_func == SPITZ_SPK_ON)
  58                 snd_soc_dapm_set_endpoint(codec, "Ext Spk", 1);
  59         else
  60                 snd_soc_dapm_set_endpoint(codec, "Ext Spk", 0);
  61
  62         /* set up jack connection */
  63         switch (spitz_jack_func) {
  64         case SPITZ_HP:
  65                 /* enable and unmute hp jack, disable mic bias */
  66                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
  67                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
  68                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
  69                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
  70                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
  71                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
  72                 break;
  73         case SPITZ_MIC:
  74                 /* enable mic jack and bias, mute hp */
  75                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
  76                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
  77                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
  78                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
  79                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
  80                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
  81                 break;
  82         case SPITZ_LINE:
  83                 /* enable line jack, disable mic bias and mute hp */
  84                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
  85                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
  86                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
  87                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 1);
  88                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
  89                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
  90                 break;
  91         case SPITZ_HEADSET:
  92                 /* enable and unmute headset jack enable mic bias, mute L hp */
  93                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
  94                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
  95                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
  96                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 1);
  97                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
  98                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
  99                 break;
 100         case SPITZ_HP_OFF:
 101
 102                 /* jack removed, everything off */
 103                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
 104                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
 105                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
 106                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
 107                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
 108                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
 109                 break;
 110         }
 111         snd_soc_dapm_sync_endpoints(codec);
 112 }
 113
 114 static int spitz_startup(struct snd_pcm_substream *substream)
 115 {
 116         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 117         struct snd_soc_codec *codec = rtd->socdev->codec;
 118
 119         /* check the jack status at stream startup */
 120         spitz_ext_control(codec);
 121         return 0;
 122 }
 123
 124 static struct snd_soc_ops spitz_ops = {
 125         .startup = spitz_startup,
 126 };
 127
 128 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 129         struct snd_ctl_elem_value *ucontrol)
 130 {
 131         ucontrol->value.integer.value[0] = spitz_jack_func;
 132         return 0;
 133 }
 134
 135 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 136         struct snd_ctl_elem_value *ucontrol)
 137 {
 138         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 139
 140         if (spitz_jack_func == ucontrol->value.integer.value[0])
 141                 return 0;
 142
 143         spitz_jack_func = ucontrol->value.integer.value[0];
 144         spitz_ext_control(codec);
 145         return 1;
 146 }
 147
 148 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 149         struct snd_ctl_elem_value *ucontrol)
 150 {
 151         ucontrol->value.integer.value[0] = spitz_spk_func;
 152         return 0;
 153 }
 154
 155 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 156         struct snd_ctl_elem_value *ucontrol)
 157 {
 158         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 159
 160         if (spitz_spk_func == ucontrol->value.integer.value[0])
 161                 return 0;
 162
 163         spitz_spk_func = ucontrol->value.integer.value[0];
 164         spitz_ext_control(codec);
 165         return 1;
 166 }
 167
 168 static int spitz_mic_bias(struct snd_soc_dapm_widget *w, int event)
 169 {
 170         if (machine_is_borzoi() || machine_is_spitz()) {
 171                 if (SND_SOC_DAPM_EVENT_ON(event))
 172                         set_scoop_gpio(&spitzscoop2_device.dev,
 173                                 SPITZ_SCP2_MIC_BIAS);
 174                 else
 175                         reset_scoop_gpio(&spitzscoop2_device.dev,
 176                                 SPITZ_SCP2_MIC_BIAS);
 177         }
 178
 179         if (machine_is_akita()) {
 180                 if (SND_SOC_DAPM_EVENT_ON(event))
 181                         akita_set_ioexp(&akitaioexp_device.dev,
 182                                 AKITA_IOEXP_MIC_BIAS);
 183                 else
 184                         akita_reset_ioexp(&akitaioexp_device.dev,
 185                                 AKITA_IOEXP_MIC_BIAS);
 186         }
 187         return 0;
 188 }
 189
 190 /* spitz machine dapm widgets */
 191 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 192         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 193         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 194         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 195         SND_SOC_DAPM_LINE("Line Jack", NULL),
 196
 197         /* headset is a mic and mono headphone */
 198         SND_SOC_DAPM_HP("Headset Jack", NULL),
 199 };
 200
 201 /* Spitz machine audio_map */
 202 static const char *audio_map[][3] = {
 203
 204         /* headphone connected to LOUT1, ROUT1 */
 205         {"Headphone Jack", NULL, "LOUT1"},
 206         {"Headphone Jack", NULL, "ROUT1"},
 207
 208         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 209         {"Headset Jack", NULL, "ROUT1"},
 210
 211         /* ext speaker connected to LOUT2, ROUT2  */
 212         {"Ext Spk", NULL , "ROUT2"},
 213         {"Ext Spk", NULL , "LOUT2"},
 214
 215         /* mic is connected to input 1 - with bias */
 216         {"LINPUT1", NULL, "Mic Bias"},
 217         {"Mic Bias", NULL, "Mic Jack"},
 218
 219         /* line is connected to input 1 - no bias */
 220         {"LINPUT1", NULL, "Line Jack"},
 221
 222         {NULL, NULL, NULL},
 223 };
 224
 225 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 226         "Off"};
 227 static const char *spk_function[] = {"On", "Off"};
 228 static const struct soc_enum spitz_enum[] = {
 229         SOC_ENUM_SINGLE_EXT(5, jack_function),
 230         SOC_ENUM_SINGLE_EXT(2, spk_function),
 231 };
 232
 233 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 234         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 235                 spitz_set_jack),
 236         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 237                 spitz_set_spk),
 238 };
 239
 240 /*
 241  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 242  */
 243 static int spitz_wm8750_init(struct snd_soc_codec *codec)
 244 {
 245         int i, err;
 246
 247         /* NC codec pins */
 248         snd_soc_dapm_set_endpoint(codec, "RINPUT1", 0);
 249         snd_soc_dapm_set_endpoint(codec, "LINPUT2", 0);
 250         snd_soc_dapm_set_endpoint(codec, "RINPUT2", 0);
 251         snd_soc_dapm_set_endpoint(codec, "LINPUT3", 0);
 252         snd_soc_dapm_set_endpoint(codec, "RINPUT3", 0);
 253         snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
 254         snd_soc_dapm_set_endpoint(codec, "MONO", 0);
 255
 256         /* Add spitz specific controls */
 257         for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
 258                 err = snd_ctl_add(codec->card,
 259                         snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
 260                 if (err < 0)
 261                         return err;
 262         }
 263
 264         /* Add spitz specific widgets */
 265         for (i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++) {
 266                 snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);
 267         }
 268
 269         /* Set up spitz specific audio path audio_map */
 270         for (i = 0; audio_map[i][0] != NULL; i++) {
 271                 snd_soc_dapm_connect_input(codec, audio_map[i][0],
 272                         audio_map[i][1], audio_map[i][2]);
 273         }
 274
 275         snd_soc_dapm_sync_endpoints(codec);
 276         return 0;
 277 }
 278
 279 static unsigned int spitz_config_sysclk(struct snd_soc_pcm_runtime *rtd,
 280         struct snd_soc_clock_info *info)
 281 {
 282         if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) {
 283                 /* pxa2xx is i2s master  */
 284                 switch (info->rate) {
 285                 case 11025:
 286                 case 22050:
 287                 case 44100:
 288                 case 88200:
 289                         /* configure codec digital filters
 290                          * for 11.025, 22.05, 44.1, 88.2 */
 291                         rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
 292                                 11289600);
 293                 break;
 294                 default:
 295                         /* configure codec digital filters for all other rates */
 296                         rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
 297                                 SPITZ_AUDIO_CLOCK);
 298                 break;
 299                 }
 300                 /* configure pxa2xx i2s interface clocks as master */
 301                 return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info,
 302                         SPITZ_AUDIO_CLOCK);
 303         } else {
 304                 /* codec is i2s master - only configure codec DAI clock */
 305                 return rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
 306                         SPITZ_AUDIO_CLOCK);
 307         }
 308 }
 309
 310 /* spitz digital audio interface glue - connects codec <--> CPU */
 311 static struct snd_soc_dai_link spitz_dai = {
 312         .name = "wm8750",
 313         .stream_name = "WM8750",
 314         .cpu_dai = &pxa_i2s_dai,
 315         .codec_dai = &wm8750_dai,
 316         .init = spitz_wm8750_init,
 317         .config_sysclk = spitz_config_sysclk,
 318 };
 319
 320 /* spitz audio machine driver */
 321 static struct snd_soc_machine snd_soc_machine_spitz = {
 322         .name = "Spitz",
 323         .dai_link = &spitz_dai,
 324         .num_links = 1,
 325         .ops = &spitz_ops,
 326 };
 327
 328 /* spitz audio private data */
 329 static struct wm8750_setup_data spitz_wm8750_setup = {
 330         .i2c_address = 0x1b,
 331 };
 332
 333 /* spitz audio subsystem */
 334 static struct snd_soc_device spitz_snd_devdata = {
 335         .machine = &snd_soc_machine_spitz,
 336         .platform = &pxa2xx_soc_platform,
 337         .codec_dev = &soc_codec_dev_wm8750,
 338         .codec_data = &spitz_wm8750_setup,
 339 };
 340
 341 static struct platform_device *spitz_snd_device;
 342
 343 static int __init spitz_init(void)
 344 {
 345         int ret;
 346
 347         if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 348                 return -ENODEV;
 349
 350         spitz_snd_device = platform_device_alloc("soc-audio", -1);
 351         if (!spitz_snd_device)
 352                 return -ENOMEM;
 353
 354         platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
 355         spitz_snd_devdata.dev = &spitz_snd_device->dev;
 356         ret = platform_device_add(spitz_snd_device);
 357
 358         if (ret)
 359                 platform_device_put(spitz_snd_device);
 360
 361         return ret;
 362 }
 363
 364 static void __exit spitz_exit(void)
 365 {
 366         platform_device_unregister(spitz_snd_device);
 367 }
 368
 369 module_init(spitz_init);
 370 module_exit(spitz_exit);
 371
 372 MODULE_AUTHOR("Richard Purdie");
 373 MODULE_DESCRIPTION("ALSA SoC Spitz");
 374 MODULE_LICENSE("GPL");