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/akita.h>
  32 #include <mach/spitz.h>
  33 #include "../codecs/wm8750.h"
  34 #include "pxa2xx-pcm.h"
  35 #include "pxa2xx-i2s.h"
  36
  37 #define SPITZ_HP        0
  38 #define SPITZ_MIC       1
  39 #define SPITZ_LINE      2
  40 #define SPITZ_HEADSET   3
  41 #define SPITZ_HP_OFF    4
  42 #define SPITZ_SPK_ON    0
  43 #define SPITZ_SPK_OFF   1
  44
  45  /* audio clock in Hz - rounded from 12.235MHz */
  46 #define SPITZ_AUDIO_CLOCK 12288000
  47
  48 static int spitz_jack_func;
  49 static int spitz_spk_func;
  50
  51 static void spitz_ext_control(struct snd_soc_codec *codec)
  52 {
  53         if (spitz_spk_func == SPITZ_SPK_ON)
  54                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  55         else
  56                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  57
  58         /* set up jack connection */
  59         switch (spitz_jack_func) {
  60         case SPITZ_HP:
  61                 /* enable and unmute hp jack, disable mic bias */
  62                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  63                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  64                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  65                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  66                 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
  67                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  68                 break;
  69         case SPITZ_MIC:
  70                 /* enable mic jack and bias, mute hp */
  71                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  72                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  73                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  74                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  75                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  76                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  77                 break;
  78         case SPITZ_LINE:
  79                 /* enable line jack, disable mic bias and mute hp */
  80                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  81                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  82                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  83                 snd_soc_dapm_enable_pin(codec, "Line Jack");
  84                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  85                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  86                 break;
  87         case SPITZ_HEADSET:
  88                 /* enable and unmute headset jack enable mic bias, mute L hp */
  89                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  90                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  91                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  92                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  93                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  94                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  95                 break;
  96         case SPITZ_HP_OFF:
  97
  98                 /* jack removed, everything off */
  99                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
 100                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
 101                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
 102                 snd_soc_dapm_disable_pin(codec, "Line Jack");
 103                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 104                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 105                 break;
 106         }
 107         snd_soc_dapm_sync(codec);
 108 }
 109
 110 static int spitz_startup(struct snd_pcm_substream *substream)
 111 {
 112         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 113         struct snd_soc_codec *codec = rtd->socdev->codec;
 114
 115         /* check the jack status at stream startup */
 116         spitz_ext_control(codec);
 117         return 0;
 118 }
 119
 120 static int spitz_hw_params(struct snd_pcm_substream *substream,
 121         struct snd_pcm_hw_params *params)
 122 {
 123         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 124         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 125         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 126         unsigned int clk = 0;
 127         int ret = 0;
 128
 129         switch (params_rate(params)) {
 130         case 8000:
 131         case 16000:
 132         case 48000:
 133         case 96000:
 134                 clk = 12288000;
 135                 break;
 136         case 11025:
 137         case 22050:
 138         case 44100:
 139                 clk = 11289600;
 140                 break;
 141         }
 142
 143         /* set codec DAI configuration */
 144         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 145                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 146         if (ret < 0)
 147                 return ret;
 148
 149         /* set cpu DAI configuration */
 150         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 151                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 152         if (ret < 0)
 153                 return ret;
 154
 155         /* set the codec system clock for DAC and ADC */
 156         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 157                 SND_SOC_CLOCK_IN);
 158         if (ret < 0)
 159                 return ret;
 160
 161         /* set the I2S system clock as input (unused) */
 162         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 163                 SND_SOC_CLOCK_IN);
 164         if (ret < 0)
 165                 return ret;
 166
 167         return 0;
 168 }
 169
 170 static struct snd_soc_ops spitz_ops = {
 171         .startup = spitz_startup,
 172         .hw_params = spitz_hw_params,
 173 };
 174
 175 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 176         struct snd_ctl_elem_value *ucontrol)
 177 {
 178         ucontrol->value.integer.value[0] = spitz_jack_func;
 179         return 0;
 180 }
 181
 182 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 183         struct snd_ctl_elem_value *ucontrol)
 184 {
 185         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 186
 187         if (spitz_jack_func == ucontrol->value.integer.value[0])
 188                 return 0;
 189
 190         spitz_jack_func = ucontrol->value.integer.value[0];
 191         spitz_ext_control(codec);
 192         return 1;
 193 }
 194
 195 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 196         struct snd_ctl_elem_value *ucontrol)
 197 {
 198         ucontrol->value.integer.value[0] = spitz_spk_func;
 199         return 0;
 200 }
 201
 202 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 203         struct snd_ctl_elem_value *ucontrol)
 204 {
 205         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 206
 207         if (spitz_spk_func == ucontrol->value.integer.value[0])
 208                 return 0;
 209
 210         spitz_spk_func = ucontrol->value.integer.value[0];
 211         spitz_ext_control(codec);
 212         return 1;
 213 }
 214
 215 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 216         struct snd_kcontrol *k, int event)
 217 {
 218         if (machine_is_borzoi() || machine_is_spitz())
 219                 gpio_set_value(SPITZ_GPIO_MIC_BIAS,
 220                                 SND_SOC_DAPM_EVENT_ON(event));
 221
 222         if (machine_is_akita()) {
 223                 if (SND_SOC_DAPM_EVENT_ON(event))
 224                         akita_set_ioexp(&akitaioexp_device.dev,
 225                                 AKITA_IOEXP_MIC_BIAS);
 226                 else
 227                         akita_reset_ioexp(&akitaioexp_device.dev,
 228                                 AKITA_IOEXP_MIC_BIAS);
 229         }
 230         return 0;
 231 }
 232
 233 /* spitz machine dapm widgets */
 234 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 235         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 236         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 237         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 238         SND_SOC_DAPM_LINE("Line Jack", NULL),
 239
 240         /* headset is a mic and mono headphone */
 241         SND_SOC_DAPM_HP("Headset Jack", NULL),
 242 };
 243
 244 /* Spitz machine audio_map */
 245 static const struct snd_soc_dapm_route audio_map[] = {
 246
 247         /* headphone connected to LOUT1, ROUT1 */
 248         {"Headphone Jack", NULL, "LOUT1"},
 249         {"Headphone Jack", NULL, "ROUT1"},
 250
 251         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 252         {"Headset Jack", NULL, "ROUT1"},
 253
 254         /* ext speaker connected to LOUT2, ROUT2  */
 255         {"Ext Spk", NULL , "ROUT2"},
 256         {"Ext Spk", NULL , "LOUT2"},
 257
 258         /* mic is connected to input 1 - with bias */
 259         {"LINPUT1", NULL, "Mic Bias"},
 260         {"Mic Bias", NULL, "Mic Jack"},
 261
 262         /* line is connected to input 1 - no bias */
 263         {"LINPUT1", NULL, "Line Jack"},
 264 };
 265
 266 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 267         "Off"};
 268 static const char *spk_function[] = {"On", "Off"};
 269 static const struct soc_enum spitz_enum[] = {
 270         SOC_ENUM_SINGLE_EXT(5, jack_function),
 271         SOC_ENUM_SINGLE_EXT(2, spk_function),
 272 };
 273
 274 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 275         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 276                 spitz_set_jack),
 277         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 278                 spitz_set_spk),
 279 };
 280
 281 /*
 282  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 283  */
 284 static int spitz_wm8750_init(struct snd_soc_codec *codec)
 285 {
 286         int i, err;
 287
 288         /* NC codec pins */
 289         snd_soc_dapm_disable_pin(codec, "RINPUT1");
 290         snd_soc_dapm_disable_pin(codec, "LINPUT2");
 291         snd_soc_dapm_disable_pin(codec, "RINPUT2");
 292         snd_soc_dapm_disable_pin(codec, "LINPUT3");
 293         snd_soc_dapm_disable_pin(codec, "RINPUT3");
 294         snd_soc_dapm_disable_pin(codec, "OUT3");
 295         snd_soc_dapm_disable_pin(codec, "MONO1");
 296
 297         /* Add spitz specific controls */
 298         for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
 299                 err = snd_ctl_add(codec->card,
 300                         snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
 301                 if (err < 0)
 302                         return err;
 303         }
 304
 305         /* Add spitz specific widgets */
 306         snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 307                                   ARRAY_SIZE(wm8750_dapm_widgets));
 308
 309         /* Set up spitz specific audio paths */
 310         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 311
 312         snd_soc_dapm_sync(codec);
 313         return 0;
 314 }
 315
 316 /* spitz digital audio interface glue - connects codec <--> CPU */
 317 static struct snd_soc_dai_link spitz_dai = {
 318         .name = "wm8750",
 319         .stream_name = "WM8750",
 320         .cpu_dai = &pxa_i2s_dai,
 321         .codec_dai = &wm8750_dai,
 322         .init = spitz_wm8750_init,
 323         .ops = &spitz_ops,
 324 };
 325
 326 /* spitz audio machine driver */
 327 static struct snd_soc_machine snd_soc_machine_spitz = {
 328         .name = "Spitz",
 329         .dai_link = &spitz_dai,
 330         .num_links = 1,
 331 };
 332
 333 /* spitz audio private data */
 334 static struct wm8750_setup_data spitz_wm8750_setup = {
 335         .i2c_address = 0x1b,
 336 };
 337
 338 /* spitz audio subsystem */
 339 static struct snd_soc_device spitz_snd_devdata = {
 340         .machine = &snd_soc_machine_spitz,
 341         .platform = &pxa2xx_soc_platform,
 342         .codec_dev = &soc_codec_dev_wm8750,
 343         .codec_data = &spitz_wm8750_setup,
 344 };
 345
 346 static struct platform_device *spitz_snd_device;
 347
 348 static int __init spitz_init(void)
 349 {
 350         int ret;
 351
 352         if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 353                 return -ENODEV;
 354
 355         spitz_snd_device = platform_device_alloc("soc-audio", -1);
 356         if (!spitz_snd_device)
 357                 return -ENOMEM;
 358
 359         platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
 360         spitz_snd_devdata.dev = &spitz_snd_device->dev;
 361         ret = platform_device_add(spitz_snd_device);
 362
 363         if (ret)
 364                 platform_device_put(spitz_snd_device);
 365
 366         return ret;
 367 }
 368
 369 static void __exit spitz_exit(void)
 370 {
 371         platform_device_unregister(spitz_snd_device);
 372 }
 373
 374 module_init(spitz_init);
 375 module_exit(spitz_exit);
 376
 377 MODULE_AUTHOR("Richard Purdie");
 378 MODULE_DESCRIPTION("ALSA SoC Spitz");
 379 MODULE_LICENSE("GPL");