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-i2s.h"
  32
  33 #define SPITZ_HP        0
  34 #define SPITZ_MIC       1
  35 #define SPITZ_LINE      2
  36 #define SPITZ_HEADSET   3
  37 #define SPITZ_HP_OFF    4
  38 #define SPITZ_SPK_ON    0
  39 #define SPITZ_SPK_OFF   1
  40
  41  /* audio clock in Hz - rounded from 12.235MHz */
  42 #define SPITZ_AUDIO_CLOCK 12288000
  43
  44 static int spitz_jack_func;
  45 static int spitz_spk_func;
  46
  47 static void spitz_ext_control(struct snd_soc_codec *codec)
  48 {
  49         if (spitz_spk_func == SPITZ_SPK_ON)
  50                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  51         else
  52                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  53
  54         /* set up jack connection */
  55         switch (spitz_jack_func) {
  56         case SPITZ_HP:
  57                 /* enable and unmute hp jack, disable mic bias */
  58                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  59                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  60                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  61                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  62                 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
  63                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  64                 break;
  65         case SPITZ_MIC:
  66                 /* enable mic jack and bias, mute hp */
  67                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  68                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  69                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  70                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  71                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  72                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  73                 break;
  74         case SPITZ_LINE:
  75                 /* enable line jack, disable mic bias and mute hp */
  76                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  77                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  78                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  79                 snd_soc_dapm_enable_pin(codec, "Line Jack");
  80                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  81                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  82                 break;
  83         case SPITZ_HEADSET:
  84                 /* enable and unmute headset jack enable mic bias, mute L hp */
  85                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  86                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  87                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  88                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  89                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  90                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  91                 break;
  92         case SPITZ_HP_OFF:
  93
  94                 /* jack removed, everything off */
  95                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  96                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  97                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  98                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  99                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 100                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 101                 break;
 102         }
 103         snd_soc_dapm_sync(codec);
 104 }
 105
 106 static int spitz_startup(struct snd_pcm_substream *substream)
 107 {
 108         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 109         struct snd_soc_codec *codec = rtd->codec;
 110
 111         mutex_lock(&codec->mutex);
 112
 113         /* check the jack status at stream startup */
 114         spitz_ext_control(codec);
 115
 116         mutex_unlock(&codec->mutex);
 117
 118         return 0;
 119 }
 120
 121 static int spitz_hw_params(struct snd_pcm_substream *substream,
 122         struct snd_pcm_hw_params *params)
 123 {
 124         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 125         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 126         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 127         unsigned int clk = 0;
 128         int ret = 0;
 129
 130         switch (params_rate(params)) {
 131         case 8000:
 132         case 16000:
 133         case 48000:
 134         case 96000:
 135                 clk = 12288000;
 136                 break;
 137         case 11025:
 138         case 22050:
 139         case 44100:
 140                 clk = 11289600;
 141                 break;
 142         }
 143
 144         /* set codec DAI configuration */
 145         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 146                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 147         if (ret < 0)
 148                 return ret;
 149
 150         /* set cpu DAI configuration */
 151         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 152                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 153         if (ret < 0)
 154                 return ret;
 155
 156         /* set the codec system clock for DAC and ADC */
 157         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 158                 SND_SOC_CLOCK_IN);
 159         if (ret < 0)
 160                 return ret;
 161
 162         /* set the I2S system clock as input (unused) */
 163         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 164                 SND_SOC_CLOCK_IN);
 165         if (ret < 0)
 166                 return ret;
 167
 168         return 0;
 169 }
 170
 171 static struct snd_soc_ops spitz_ops = {
 172         .startup = spitz_startup,
 173         .hw_params = spitz_hw_params,
 174 };
 175
 176 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 177         struct snd_ctl_elem_value *ucontrol)
 178 {
 179         ucontrol->value.integer.value[0] = spitz_jack_func;
 180         return 0;
 181 }
 182
 183 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 184         struct snd_ctl_elem_value *ucontrol)
 185 {
 186         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 187
 188         if (spitz_jack_func == ucontrol->value.integer.value[0])
 189                 return 0;
 190
 191         spitz_jack_func = ucontrol->value.integer.value[0];
 192         spitz_ext_control(codec);
 193         return 1;
 194 }
 195
 196 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 197         struct snd_ctl_elem_value *ucontrol)
 198 {
 199         ucontrol->value.integer.value[0] = spitz_spk_func;
 200         return 0;
 201 }
 202
 203 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 204         struct snd_ctl_elem_value *ucontrol)
 205 {
 206         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 207
 208         if (spitz_spk_func == ucontrol->value.integer.value[0])
 209                 return 0;
 210
 211         spitz_spk_func = ucontrol->value.integer.value[0];
 212         spitz_ext_control(codec);
 213         return 1;
 214 }
 215
 216 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 217         struct snd_kcontrol *k, int event)
 218 {
 219         if (machine_is_borzoi() || machine_is_spitz())
 220                 gpio_set_value(SPITZ_GPIO_MIC_BIAS,
 221                                 SND_SOC_DAPM_EVENT_ON(event));
 222
 223         if (machine_is_akita())
 224                 gpio_set_value(AKITA_GPIO_MIC_BIAS,
 225                                 SND_SOC_DAPM_EVENT_ON(event));
 226
 227         return 0;
 228 }
 229
 230 /* spitz machine dapm widgets */
 231 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 232         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 233         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 234         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 235         SND_SOC_DAPM_LINE("Line Jack", NULL),
 236
 237         /* headset is a mic and mono headphone */
 238         SND_SOC_DAPM_HP("Headset Jack", NULL),
 239 };
 240
 241 /* Spitz machine audio_map */
 242 static const struct snd_soc_dapm_route audio_map[] = {
 243
 244         /* headphone connected to LOUT1, ROUT1 */
 245         {"Headphone Jack", NULL, "LOUT1"},
 246         {"Headphone Jack", NULL, "ROUT1"},
 247
 248         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 249         {"Headset Jack", NULL, "ROUT1"},
 250
 251         /* ext speaker connected to LOUT2, ROUT2  */
 252         {"Ext Spk", NULL , "ROUT2"},
 253         {"Ext Spk", NULL , "LOUT2"},
 254
 255         /* mic is connected to input 1 - with bias */
 256         {"LINPUT1", NULL, "Mic Bias"},
 257         {"Mic Bias", NULL, "Mic Jack"},
 258
 259         /* line is connected to input 1 - no bias */
 260         {"LINPUT1", NULL, "Line Jack"},
 261 };
 262
 263 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 264         "Off"};
 265 static const char *spk_function[] = {"On", "Off"};
 266 static const struct soc_enum spitz_enum[] = {
 267         SOC_ENUM_SINGLE_EXT(5, jack_function),
 268         SOC_ENUM_SINGLE_EXT(2, spk_function),
 269 };
 270
 271 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 272         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 273                 spitz_set_jack),
 274         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 275                 spitz_set_spk),
 276 };
 277
 278 /*
 279  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 280  */
 281 static int spitz_wm8750_init(struct snd_soc_pcm_runtime *rtd)
 282 {
 283         struct snd_soc_codec *codec = rtd->codec;
 284         int err;
 285
 286         /* NC codec pins */
 287         snd_soc_dapm_nc_pin(codec, "RINPUT1");
 288         snd_soc_dapm_nc_pin(codec, "LINPUT2");
 289         snd_soc_dapm_nc_pin(codec, "RINPUT2");
 290         snd_soc_dapm_nc_pin(codec, "LINPUT3");
 291         snd_soc_dapm_nc_pin(codec, "RINPUT3");
 292         snd_soc_dapm_nc_pin(codec, "OUT3");
 293         snd_soc_dapm_nc_pin(codec, "MONO1");
 294
 295         /* Add spitz specific controls */
 296         err = snd_soc_add_controls(codec, wm8750_spitz_controls,
 297                                 ARRAY_SIZE(wm8750_spitz_controls));
 298         if (err < 0)
 299                 return err;
 300
 301         /* Add spitz specific widgets */
 302         snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 303                                   ARRAY_SIZE(wm8750_dapm_widgets));
 304
 305         /* Set up spitz specific audio paths */
 306         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 307
 308         snd_soc_dapm_sync(codec);
 309         return 0;
 310 }
 311
 312 /* spitz digital audio interface glue - connects codec <--> CPU */
 313 static struct snd_soc_dai_link spitz_dai = {
 314         .name = "wm8750",
 315         .stream_name = "WM8750",
 316         .cpu_dai_name = "pxa-is2",
 317         .codec_dai_name = "wm8750-hifi",
 318         .platform_name = "pxa-pcm-audio",
 319         .codec_name = "wm8750-codec.0-001a",
 320         .init = spitz_wm8750_init,
 321         .ops = &spitz_ops,
 322 };
 323
 324 /* spitz audio machine driver */
 325 static struct snd_soc_card snd_soc_spitz = {
 326         .name = "Spitz",
 327         .dai_link = &spitz_dai,
 328         .num_links = 1,
 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, &snd_soc_spitz);
 345         ret = platform_device_add(spitz_snd_device);
 346
 347         if (ret)
 348                 platform_device_put(spitz_snd_device);
 349
 350         return ret;
 351 }
 352
 353 static void __exit spitz_exit(void)
 354 {
 355         platform_device_unregister(spitz_snd_device);
 356 }
 357
 358 module_init(spitz_init);
 359 module_exit(spitz_exit);
 360
 361 MODULE_AUTHOR("Richard Purdie");
 362 MODULE_DESCRIPTION("ALSA SoC Spitz");
 363 MODULE_LICENSE("GPL");