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
  27 #include <asm/mach-types.h>
  28 #include <mach/spitz.h>
  29 #include "../codecs/wm8750.h"
  30 #include "pxa2xx-i2s.h"
  31
  32 #define SPITZ_HP        0
  33 #define SPITZ_MIC       1
  34 #define SPITZ_LINE      2
  35 #define SPITZ_HEADSET   3
  36 #define SPITZ_HP_OFF    4
  37 #define SPITZ_SPK_ON    0
  38 #define SPITZ_SPK_OFF   1
  39
  40  /* audio clock in Hz - rounded from 12.235MHz */
  41 #define SPITZ_AUDIO_CLOCK 12288000
  42
  43 static int spitz_jack_func;
  44 static int spitz_spk_func;
  45 static int spitz_mic_gpio;
  46
  47 static void spitz_ext_control(struct snd_soc_codec *codec)
  48 {
  49         struct snd_soc_dapm_context *dapm = &codec->dapm;
  50
  51         if (spitz_spk_func == SPITZ_SPK_ON)
  52                 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
  53         else
  54                 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
  55
  56         /* set up jack connection */
  57         switch (spitz_jack_func) {
  58         case SPITZ_HP:
  59                 /* enable and unmute hp jack, disable mic bias */
  60                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  61                 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
  62                 snd_soc_dapm_disable_pin(dapm, "Line Jack");
  63                 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
  64                 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
  65                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  66                 break;
  67         case SPITZ_MIC:
  68                 /* enable mic jack and bias, mute hp */
  69                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  70                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  71                 snd_soc_dapm_disable_pin(dapm, "Line Jack");
  72                 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
  73                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  74                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  75                 break;
  76         case SPITZ_LINE:
  77                 /* enable line jack, disable mic bias and mute hp */
  78                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  79                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  80                 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
  81                 snd_soc_dapm_enable_pin(dapm, "Line Jack");
  82                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  83                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  84                 break;
  85         case SPITZ_HEADSET:
  86                 /* enable and unmute headset jack enable mic bias, mute L hp */
  87                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  88                 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
  89                 snd_soc_dapm_disable_pin(dapm, "Line Jack");
  90                 snd_soc_dapm_enable_pin(dapm, "Headset Jack");
  91                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  92                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  93                 break;
  94         case SPITZ_HP_OFF:
  95
  96                 /* jack removed, everything off */
  97                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  98                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  99                 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
 100                 snd_soc_dapm_disable_pin(dapm, "Line Jack");
 101                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 102                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 103                 break;
 104         }
 105         snd_soc_dapm_sync(dapm);
 106 }
 107
 108 static int spitz_startup(struct snd_pcm_substream *substream)
 109 {
 110         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 111         struct snd_soc_codec *codec = rtd->codec;
 112
 113         mutex_lock(&codec->mutex);
 114
 115         /* check the jack status at stream startup */
 116         spitz_ext_control(codec);
 117
 118         mutex_unlock(&codec->mutex);
 119
 120         return 0;
 121 }
 122
 123 static int spitz_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_dai *codec_dai = rtd->codec_dai;
 128         struct snd_soc_dai *cpu_dai = rtd->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 = snd_soc_dai_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 = snd_soc_dai_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 = snd_soc_dai_set_sysclk(codec_dai, WM8750_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 = snd_soc_dai_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 spitz_ops = {
 174         .startup = spitz_startup,
 175         .hw_params = spitz_hw_params,
 176 };
 177
 178 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 179         struct snd_ctl_elem_value *ucontrol)
 180 {
 181         ucontrol->value.integer.value[0] = spitz_jack_func;
 182         return 0;
 183 }
 184
 185 static int spitz_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 (spitz_jack_func == ucontrol->value.integer.value[0])
 191                 return 0;
 192
 193         spitz_jack_func = ucontrol->value.integer.value[0];
 194         spitz_ext_control(codec);
 195         return 1;
 196 }
 197
 198 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 199         struct snd_ctl_elem_value *ucontrol)
 200 {
 201         ucontrol->value.integer.value[0] = spitz_spk_func;
 202         return 0;
 203 }
 204
 205 static int spitz_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 (spitz_spk_func == ucontrol->value.integer.value[0])
 211                 return 0;
 212
 213         spitz_spk_func = ucontrol->value.integer.value[0];
 214         spitz_ext_control(codec);
 215         return 1;
 216 }
 217
 218 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 219         struct snd_kcontrol *k, int event)
 220 {
 221         gpio_set_value_cansleep(spitz_mic_gpio, SND_SOC_DAPM_EVENT_ON(event));
 222         return 0;
 223 }
 224
 225 /* spitz machine dapm widgets */
 226 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 227         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 228         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 229         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 230         SND_SOC_DAPM_LINE("Line Jack", NULL),
 231
 232         /* headset is a mic and mono headphone */
 233         SND_SOC_DAPM_HP("Headset Jack", NULL),
 234 };
 235
 236 /* Spitz machine audio_map */
 237 static const struct snd_soc_dapm_route audio_map[] = {
 238
 239         /* headphone connected to LOUT1, ROUT1 */
 240         {"Headphone Jack", NULL, "LOUT1"},
 241         {"Headphone Jack", NULL, "ROUT1"},
 242
 243         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 244         {"Headset Jack", NULL, "ROUT1"},
 245
 246         /* ext speaker connected to LOUT2, ROUT2  */
 247         {"Ext Spk", NULL , "ROUT2"},
 248         {"Ext Spk", NULL , "LOUT2"},
 249
 250         /* mic is connected to input 1 - with bias */
 251         {"LINPUT1", NULL, "Mic Bias"},
 252         {"Mic Bias", NULL, "Mic Jack"},
 253
 254         /* line is connected to input 1 - no bias */
 255         {"LINPUT1", NULL, "Line Jack"},
 256 };
 257
 258 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 259         "Off"};
 260 static const char *spk_function[] = {"On", "Off"};
 261 static const struct soc_enum spitz_enum[] = {
 262         SOC_ENUM_SINGLE_EXT(5, jack_function),
 263         SOC_ENUM_SINGLE_EXT(2, spk_function),
 264 };
 265
 266 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 267         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 268                 spitz_set_jack),
 269         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 270                 spitz_set_spk),
 271 };
 272
 273 /*
 274  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 275  */
 276 static int spitz_wm8750_init(struct snd_soc_pcm_runtime *rtd)
 277 {
 278         struct snd_soc_codec *codec = rtd->codec;
 279         struct snd_soc_dapm_context *dapm = &codec->dapm;
 280         int err;
 281
 282         /* NC codec pins */
 283         snd_soc_dapm_nc_pin(dapm, "RINPUT1");
 284         snd_soc_dapm_nc_pin(dapm, "LINPUT2");
 285         snd_soc_dapm_nc_pin(dapm, "RINPUT2");
 286         snd_soc_dapm_nc_pin(dapm, "LINPUT3");
 287         snd_soc_dapm_nc_pin(dapm, "RINPUT3");
 288         snd_soc_dapm_nc_pin(dapm, "OUT3");
 289         snd_soc_dapm_nc_pin(dapm, "MONO1");
 290
 291         /* Add spitz specific controls */
 292         err = snd_soc_add_controls(codec, wm8750_spitz_controls,
 293                                 ARRAY_SIZE(wm8750_spitz_controls));
 294         if (err < 0)
 295                 return err;
 296
 297         /* Add spitz specific widgets */
 298         snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
 299                                   ARRAY_SIZE(wm8750_dapm_widgets));
 300
 301         /* Set up spitz specific audio paths */
 302         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 303
 304         snd_soc_dapm_sync(dapm);
 305         return 0;
 306 }
 307
 308 /* spitz digital audio interface glue - connects codec <--> CPU */
 309 static struct snd_soc_dai_link spitz_dai = {
 310         .name = "wm8750",
 311         .stream_name = "WM8750",
 312         .cpu_dai_name = "pxa2xx-i2s",
 313         .codec_dai_name = "wm8750-hifi",
 314         .platform_name = "pxa-pcm-audio",
 315         .codec_name = "wm8750-codec.0-001b",
 316         .init = spitz_wm8750_init,
 317         .ops = &spitz_ops,
 318 };
 319
 320 /* spitz audio machine driver */
 321 static struct snd_soc_card snd_soc_spitz = {
 322         .name = "Spitz",
 323         .dai_link = &spitz_dai,
 324         .num_links = 1,
 325 };
 326
 327 static struct platform_device *spitz_snd_device;
 328
 329 static int __init spitz_init(void)
 330 {
 331         int ret;
 332
 333         if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 334                 return -ENODEV;
 335
 336         if (machine_is_borzoi() || machine_is_spitz())
 337                 spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS;
 338         else
 339                 spitz_mic_gpio = AKITA_GPIO_MIC_BIAS;
 340
 341         ret = gpio_request(spitz_mic_gpio, "MIC GPIO");
 342         if (ret)
 343                 goto err1;
 344
 345         ret = gpio_direction_output(spitz_mic_gpio, 0);
 346         if (ret)
 347                 goto err2;
 348
 349         spitz_snd_device = platform_device_alloc("soc-audio", -1);
 350         if (!spitz_snd_device) {
 351                 ret = -ENOMEM;
 352                 goto err2;
 353         }
 354
 355         platform_set_drvdata(spitz_snd_device, &snd_soc_spitz);
 356
 357         ret = platform_device_add(spitz_snd_device);
 358         if (ret)
 359                 goto err3;
 360
 361         return 0;
 362
 363 err3:
 364         platform_device_put(spitz_snd_device);
 365 err2:
 366         gpio_free(spitz_mic_gpio);
 367 err1:
 368         return ret;
 369 }
 370
 371 static void __exit spitz_exit(void)
 372 {
 373         platform_device_unregister(spitz_snd_device);
 374         gpio_free(spitz_mic_gpio);
 375 }
 376
 377 module_init(spitz_init);
 378 module_exit(spitz_exit);
 379
 380 MODULE_AUTHOR("Richard Purdie");
 381 MODULE_DESCRIPTION("ALSA SoC Spitz");
 382 MODULE_LICENSE("GPL");