release/src-rt-6.x.4708/linux/linux-2.6.36/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 <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
  17 #include <linux/module.h>
  18 #include <linux/moduleparam.h>
  19 #include <linux/timer.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/gpio.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/soc.h>
  26 #include <sound/soc-dapm.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <mach/spitz.h>
  30 #include "../codecs/wm8750.h"
  31 #include "pxa2xx-pcm.h"
  32 #include "pxa2xx-i2s.h"
  33
  34 #define SPITZ_HP        0
  35 #define SPITZ_MIC       1
  36 #define SPITZ_LINE      2
  37 #define SPITZ_HEADSET   3
  38 #define SPITZ_HP_OFF    4
  39 #define SPITZ_SPK_ON    0
  40 #define SPITZ_SPK_OFF   1
  41
  42  /* audio clock in Hz - rounded from 12.235MHz */
  43 #define SPITZ_AUDIO_CLOCK 12288000
  44
  45 static int spitz_jack_func;
  46 static int spitz_spk_func;
  47
  48 static void spitz_ext_control(struct snd_soc_codec *codec)
  49 {
  50         if (spitz_spk_func == SPITZ_SPK_ON)
  51                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  52         else
  53                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  54
  55         /* set up jack connection */
  56         switch (spitz_jack_func) {
  57         case SPITZ_HP:
  58                 /* enable and unmute hp jack, disable mic bias */
  59                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  60                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  61                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  62                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  63                 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
  64                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  65                 break;
  66         case SPITZ_MIC:
  67                 /* enable mic jack and bias, mute hp */
  68                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  69                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  70                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  71                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  72                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  73                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  74                 break;
  75         case SPITZ_LINE:
  76                 /* enable line jack, disable mic bias and mute hp */
  77                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  78                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  79                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  80                 snd_soc_dapm_enable_pin(codec, "Line Jack");
  81                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  82                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  83                 break;
  84         case SPITZ_HEADSET:
  85                 /* enable and unmute headset jack enable mic bias, mute L hp */
  86                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  87                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  88                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  89                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  90                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  91                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  92                 break;
  93         case SPITZ_HP_OFF:
  94
  95                 /* jack removed, everything off */
  96                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  97                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  98                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  99                 snd_soc_dapm_disable_pin(codec, "Line Jack");
 100                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 101                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 102                 break;
 103         }
 104         snd_soc_dapm_sync(codec);
 105 }
 106
 107 static int spitz_startup(struct snd_pcm_substream *substream)
 108 {
 109         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 110         struct snd_soc_codec *codec = rtd->socdev->card->codec;
 111
 112         /* check the jack status at stream startup */
 113         spitz_ext_control(codec);
 114         return 0;
 115 }
 116
 117 static int spitz_hw_params(struct snd_pcm_substream *substream,
 118         struct snd_pcm_hw_params *params)
 119 {
 120         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 121         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 122         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 123         unsigned int clk = 0;
 124         int ret = 0;
 125
 126         switch (params_rate(params)) {
 127         case 8000:
 128         case 16000:
 129         case 48000:
 130         case 96000:
 131                 clk = 12288000;
 132                 break;
 133         case 11025:
 134         case 22050:
 135         case 44100:
 136                 clk = 11289600;
 137                 break;
 138         }
 139
 140         /* set codec DAI configuration */
 141         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 142                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 143         if (ret < 0)
 144                 return ret;
 145
 146         /* set cpu DAI configuration */
 147         ret = snd_soc_dai_set_fmt(cpu_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 the codec system clock for DAC and ADC */
 153         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 154                 SND_SOC_CLOCK_IN);
 155         if (ret < 0)
 156                 return ret;
 157
 158         /* set the I2S system clock as input (unused) */
 159         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 160                 SND_SOC_CLOCK_IN);
 161         if (ret < 0)
 162                 return ret;
 163
 164         return 0;
 165 }
 166
 167 static struct snd_soc_ops spitz_ops = {
 168         .startup = spitz_startup,
 169         .hw_params = spitz_hw_params,
 170 };
 171
 172 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 173         struct snd_ctl_elem_value *ucontrol)
 174 {
 175         ucontrol->value.integer.value[0] = spitz_jack_func;
 176         return 0;
 177 }
 178
 179 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 180         struct snd_ctl_elem_value *ucontrol)
 181 {
 182         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 183
 184         if (spitz_jack_func == ucontrol->value.integer.value[0])
 185                 return 0;
 186
 187         spitz_jack_func = ucontrol->value.integer.value[0];
 188         spitz_ext_control(codec);
 189         return 1;
 190 }
 191
 192 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 193         struct snd_ctl_elem_value *ucontrol)
 194 {
 195         ucontrol->value.integer.value[0] = spitz_spk_func;
 196         return 0;
 197 }
 198
 199 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 200         struct snd_ctl_elem_value *ucontrol)
 201 {
 202         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 203
 204         if (spitz_spk_func == ucontrol->value.integer.value[0])
 205                 return 0;
 206
 207         spitz_spk_func = ucontrol->value.integer.value[0];
 208         spitz_ext_control(codec);
 209         return 1;
 210 }
 211
 212 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 213         struct snd_kcontrol *k, int event)
 214 {
 215         if (machine_is_borzoi() || machine_is_spitz())
 216                 gpio_set_value(SPITZ_GPIO_MIC_BIAS,
 217                                 SND_SOC_DAPM_EVENT_ON(event));
 218
 219         if (machine_is_akita())
 220                 gpio_set_value(AKITA_GPIO_MIC_BIAS,
 221                                 SND_SOC_DAPM_EVENT_ON(event));
 222
 223         return 0;
 224 }
 225
 226 /* spitz machine dapm widgets */
 227 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 228         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 229         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 230         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 231         SND_SOC_DAPM_LINE("Line Jack", NULL),
 232
 233         /* headset is a mic and mono headphone */
 234         SND_SOC_DAPM_HP("Headset Jack", NULL),
 235 };
 236
 237 /* Spitz machine audio_map */
 238 static const struct snd_soc_dapm_route audio_map[] = {
 239
 240         /* headphone connected to LOUT1, ROUT1 */
 241         {"Headphone Jack", NULL, "LOUT1"},
 242         {"Headphone Jack", NULL, "ROUT1"},
 243
 244         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 245         {"Headset Jack", NULL, "ROUT1"},
 246
 247         /* ext speaker connected to LOUT2, ROUT2  */
 248         {"Ext Spk", NULL , "ROUT2"},
 249         {"Ext Spk", NULL , "LOUT2"},
 250
 251         /* mic is connected to input 1 - with bias */
 252         {"LINPUT1", NULL, "Mic Bias"},
 253         {"Mic Bias", NULL, "Mic Jack"},
 254
 255         /* line is connected to input 1 - no bias */
 256         {"LINPUT1", NULL, "Line Jack"},
 257 };
 258
 259 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 260         "Off"};
 261 static const char *spk_function[] = {"On", "Off"};
 262 static const struct soc_enum spitz_enum[] = {
 263         SOC_ENUM_SINGLE_EXT(5, jack_function),
 264         SOC_ENUM_SINGLE_EXT(2, spk_function),
 265 };
 266
 267 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 268         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 269                 spitz_set_jack),
 270         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 271                 spitz_set_spk),
 272 };
 273
 274 /*
 275  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 276  */
 277 static int spitz_wm8750_init(struct snd_soc_codec *codec)
 278 {
 279         int err;
 280
 281         /* NC codec pins */
 282         snd_soc_dapm_nc_pin(codec, "RINPUT1");
 283         snd_soc_dapm_nc_pin(codec, "LINPUT2");
 284         snd_soc_dapm_nc_pin(codec, "RINPUT2");
 285         snd_soc_dapm_nc_pin(codec, "LINPUT3");
 286         snd_soc_dapm_nc_pin(codec, "RINPUT3");
 287         snd_soc_dapm_nc_pin(codec, "OUT3");
 288         snd_soc_dapm_nc_pin(codec, "MONO1");
 289
 290         /* Add spitz specific controls */
 291         err = snd_soc_add_controls(codec, wm8750_spitz_controls,
 292                                 ARRAY_SIZE(wm8750_spitz_controls));
 293         if (err < 0)
 294                 return err;
 295
 296         /* Add spitz specific widgets */
 297         snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 298                                   ARRAY_SIZE(wm8750_dapm_widgets));
 299
 300         /* Set up spitz specific audio paths */
 301         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 302
 303         snd_soc_dapm_sync(codec);
 304         return 0;
 305 }
 306
 307 /* spitz digital audio interface glue - connects codec <--> CPU */
 308 static struct snd_soc_dai_link spitz_dai = {
 309         .name = "wm8750",
 310         .stream_name = "WM8750",
 311         .cpu_dai = &pxa_i2s_dai,
 312         .codec_dai = &wm8750_dai,
 313         .init = spitz_wm8750_init,
 314         .ops = &spitz_ops,
 315 };
 316
 317 /* spitz audio machine driver */
 318 static struct snd_soc_card snd_soc_spitz = {
 319         .name = "Spitz",
 320         .platform = &pxa2xx_soc_platform,
 321         .dai_link = &spitz_dai,
 322         .num_links = 1,
 323 };
 324
 325 /* spitz audio subsystem */
 326 static struct snd_soc_device spitz_snd_devdata = {
 327         .card = &snd_soc_spitz,
 328         .codec_dev = &soc_codec_dev_wm8750,
 329 };
 330
 331 static struct platform_device *spitz_snd_device;
 332
 333 static int __init spitz_init(void)
 334 {
 335         int ret;
 336
 337         if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 338                 return -ENODEV;
 339
 340         spitz_snd_device = platform_device_alloc("soc-audio", -1);
 341         if (!spitz_snd_device)
 342                 return -ENOMEM;
 343
 344         platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
 345         spitz_snd_devdata.dev = &spitz_snd_device->dev;
 346         ret = platform_device_add(spitz_snd_device);
 347
 348         if (ret)
 349                 platform_device_put(spitz_snd_device);
 350
 351         return ret;
 352 }
 353
 354 static void __exit spitz_exit(void)
 355 {
 356         platform_device_unregister(spitz_snd_device);
 357 }
 358
 359 module_init(spitz_init);
 360 module_exit(spitz_exit);
 361
 362 MODULE_AUTHOR("Richard Purdie");
 363 MODULE_DESCRIPTION("ALSA SoC Spitz");
 364 MODULE_LICENSE("GPL");