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  */
  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/pxa-regs.h>
  30 #include <mach/hardware.h>
  31 #include <mach/spitz.h>
  32 #include "../codecs/wm8750.h"
  33 #include "pxa2xx-pcm.h"
  34 #include "pxa2xx-i2s.h"
  35
  36 #define SPITZ_HP        0
  37 #define SPITZ_MIC       1
  38 #define SPITZ_LINE      2
  39 #define SPITZ_HEADSET   3
  40 #define SPITZ_HP_OFF    4
  41 #define SPITZ_SPK_ON    0
  42 #define SPITZ_SPK_OFF   1
  43
  44  /* audio clock in Hz - rounded from 12.235MHz */
  45 #define SPITZ_AUDIO_CLOCK 12288000
  46
  47 static int spitz_jack_func;
  48 static int spitz_spk_func;
  49
  50 static void spitz_ext_control(struct snd_soc_codec *codec)
  51 {
  52         if (spitz_spk_func == SPITZ_SPK_ON)
  53                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  54         else
  55                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  56
  57         /* set up jack connection */
  58         switch (spitz_jack_func) {
  59         case SPITZ_HP:
  60                 /* enable and unmute hp jack, disable mic bias */
  61                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  62                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  63                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  64                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  65                 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
  66                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  67                 break;
  68         case SPITZ_MIC:
  69                 /* enable mic jack and bias, mute hp */
  70                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  71                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  72                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  73                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  74                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  75                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  76                 break;
  77         case SPITZ_LINE:
  78                 /* enable line jack, disable mic bias and mute hp */
  79                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  80                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  81                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  82                 snd_soc_dapm_enable_pin(codec, "Line Jack");
  83                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  84                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  85                 break;
  86         case SPITZ_HEADSET:
  87                 /* enable and unmute headset jack enable mic bias, mute L hp */
  88                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  89                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  90                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  91                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  92                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  93                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  94                 break;
  95         case SPITZ_HP_OFF:
  96
  97                 /* jack removed, everything off */
  98                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  99                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
 100                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
 101                 snd_soc_dapm_disable_pin(codec, "Line Jack");
 102                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 103                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 104                 break;
 105         }
 106         snd_soc_dapm_sync(codec);
 107 }
 108
 109 static int spitz_startup(struct snd_pcm_substream *substream)
 110 {
 111         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 112         struct snd_soc_codec *codec = rtd->socdev->codec;
 113
 114         /* check the jack status at stream startup */
 115         spitz_ext_control(codec);
 116         return 0;
 117 }
 118
 119 static int spitz_hw_params(struct snd_pcm_substream *substream,
 120         struct snd_pcm_hw_params *params)
 121 {
 122         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 123         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 124         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 125         unsigned int clk = 0;
 126         int ret = 0;
 127
 128         switch (params_rate(params)) {
 129         case 8000:
 130         case 16000:
 131         case 48000:
 132         case 96000:
 133                 clk = 12288000;
 134                 break;
 135         case 11025:
 136         case 22050:
 137         case 44100:
 138                 clk = 11289600;
 139                 break;
 140         }
 141
 142         /* set codec DAI configuration */
 143         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 144                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 145         if (ret < 0)
 146                 return ret;
 147
 148         /* set cpu DAI configuration */
 149         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 150                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 151         if (ret < 0)
 152                 return ret;
 153
 154         /* set the codec system clock for DAC and ADC */
 155         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 156                 SND_SOC_CLOCK_IN);
 157         if (ret < 0)
 158                 return ret;
 159
 160         /* set the I2S system clock as input (unused) */
 161         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 162                 SND_SOC_CLOCK_IN);
 163         if (ret < 0)
 164                 return ret;
 165
 166         return 0;
 167 }
 168
 169 static struct snd_soc_ops spitz_ops = {
 170         .startup = spitz_startup,
 171         .hw_params = spitz_hw_params,
 172 };
 173
 174 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 175         struct snd_ctl_elem_value *ucontrol)
 176 {
 177         ucontrol->value.integer.value[0] = spitz_jack_func;
 178         return 0;
 179 }
 180
 181 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 182         struct snd_ctl_elem_value *ucontrol)
 183 {
 184         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 185
 186         if (spitz_jack_func == ucontrol->value.integer.value[0])
 187                 return 0;
 188
 189         spitz_jack_func = ucontrol->value.integer.value[0];
 190         spitz_ext_control(codec);
 191         return 1;
 192 }
 193
 194 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 195         struct snd_ctl_elem_value *ucontrol)
 196 {
 197         ucontrol->value.integer.value[0] = spitz_spk_func;
 198         return 0;
 199 }
 200
 201 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 202         struct snd_ctl_elem_value *ucontrol)
 203 {
 204         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 205
 206         if (spitz_spk_func == ucontrol->value.integer.value[0])
 207                 return 0;
 208
 209         spitz_spk_func = ucontrol->value.integer.value[0];
 210         spitz_ext_control(codec);
 211         return 1;
 212 }
 213
 214 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 215         struct snd_kcontrol *k, int event)
 216 {
 217         if (machine_is_borzoi() || machine_is_spitz())
 218                 gpio_set_value(SPITZ_GPIO_MIC_BIAS,
 219                                 SND_SOC_DAPM_EVENT_ON(event));
 220
 221         if (machine_is_akita())
 222                 gpio_set_value(AKITA_GPIO_MIC_BIAS,
 223                                 SND_SOC_DAPM_EVENT_ON(event));
 224
 225         return 0;
 226 }
 227
 228 /* spitz machine dapm widgets */
 229 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 230         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 231         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 232         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 233         SND_SOC_DAPM_LINE("Line Jack", NULL),
 234
 235         /* headset is a mic and mono headphone */
 236         SND_SOC_DAPM_HP("Headset Jack", NULL),
 237 };
 238
 239 /* Spitz machine audio_map */
 240 static const struct snd_soc_dapm_route audio_map[] = {
 241
 242         /* headphone connected to LOUT1, ROUT1 */
 243         {"Headphone Jack", NULL, "LOUT1"},
 244         {"Headphone Jack", NULL, "ROUT1"},
 245
 246         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 247         {"Headset Jack", NULL, "ROUT1"},
 248
 249         /* ext speaker connected to LOUT2, ROUT2  */
 250         {"Ext Spk", NULL , "ROUT2"},
 251         {"Ext Spk", NULL , "LOUT2"},
 252
 253         /* mic is connected to input 1 - with bias */
 254         {"LINPUT1", NULL, "Mic Bias"},
 255         {"Mic Bias", NULL, "Mic Jack"},
 256
 257         /* line is connected to input 1 - no bias */
 258         {"LINPUT1", NULL, "Line Jack"},
 259 };
 260
 261 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 262         "Off"};
 263 static const char *spk_function[] = {"On", "Off"};
 264 static const struct soc_enum spitz_enum[] = {
 265         SOC_ENUM_SINGLE_EXT(5, jack_function),
 266         SOC_ENUM_SINGLE_EXT(2, spk_function),
 267 };
 268
 269 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 270         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 271                 spitz_set_jack),
 272         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 273                 spitz_set_spk),
 274 };
 275
 276 /*
 277  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 278  */
 279 static int spitz_wm8750_init(struct snd_soc_codec *codec)
 280 {
 281         int i, err;
 282
 283         /* NC codec pins */
 284         snd_soc_dapm_disable_pin(codec, "RINPUT1");
 285         snd_soc_dapm_disable_pin(codec, "LINPUT2");
 286         snd_soc_dapm_disable_pin(codec, "RINPUT2");
 287         snd_soc_dapm_disable_pin(codec, "LINPUT3");
 288         snd_soc_dapm_disable_pin(codec, "RINPUT3");
 289         snd_soc_dapm_disable_pin(codec, "OUT3");
 290         snd_soc_dapm_disable_pin(codec, "MONO1");
 291
 292         /* Add spitz specific controls */
 293         for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
 294                 err = snd_ctl_add(codec->card,
 295                         snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
 296                 if (err < 0)
 297                         return err;
 298         }
 299
 300         /* Add spitz specific widgets */
 301         snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 302                                   ARRAY_SIZE(wm8750_dapm_widgets));
 303
 304         /* Set up spitz specific audio paths */
 305         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 306
 307         snd_soc_dapm_sync(codec);
 308         return 0;
 309 }
 310
 311 /* spitz digital audio interface glue - connects codec <--> CPU */
 312 static struct snd_soc_dai_link spitz_dai = {
 313         .name = "wm8750",
 314         .stream_name = "WM8750",
 315         .cpu_dai = &pxa_i2s_dai,
 316         .codec_dai = &wm8750_dai,
 317         .init = spitz_wm8750_init,
 318         .ops = &spitz_ops,
 319 };
 320
 321 /* spitz audio machine driver */
 322 static struct snd_soc_machine snd_soc_machine_spitz = {
 323         .name = "Spitz",
 324         .dai_link = &spitz_dai,
 325         .num_links = 1,
 326 };
 327
 328 /* spitz audio private data */
 329 static struct wm8750_setup_data spitz_wm8750_setup = {
 330         .i2c_bus = 0,
 331         .i2c_address = 0x1b,
 332 };
 333
 334 /* spitz audio subsystem */
 335 static struct snd_soc_device spitz_snd_devdata = {
 336         .machine = &snd_soc_machine_spitz,
 337         .platform = &pxa2xx_soc_platform,
 338         .codec_dev = &soc_codec_dev_wm8750,
 339         .codec_data = &spitz_wm8750_setup,
 340 };
 341
 342 static struct platform_device *spitz_snd_device;
 343
 344 static int __init spitz_init(void)
 345 {
 346         int ret;
 347
 348         if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 349                 return -ENODEV;
 350
 351         spitz_snd_device = platform_device_alloc("soc-audio", -1);
 352         if (!spitz_snd_device)
 353                 return -ENOMEM;
 354
 355         platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
 356         spitz_snd_devdata.dev = &spitz_snd_device->dev;
 357         ret = platform_device_add(spitz_snd_device);
 358
 359         if (ret)
 360                 platform_device_put(spitz_snd_device);
 361
 362         return ret;
 363 }
 364
 365 static void __exit spitz_exit(void)
 366 {
 367         platform_device_unregister(spitz_snd_device);
 368 }
 369
 370 module_init(spitz_init);
 371 module_exit(spitz_exit);
 372
 373 MODULE_AUTHOR("Richard Purdie");
 374 MODULE_DESCRIPTION("ALSA SoC Spitz");
 375 MODULE_LICENSE("GPL");