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  *  Revision history
  16  *    30th Nov 2005   Initial version.
  17  *
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/moduleparam.h>
  22 #include <linux/timer.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/platform_device.h>
  25 #include <sound/driver.h>
  26 #include <sound/core.h>
  27 #include <sound/pcm.h>
  28 #include <sound/soc.h>
  29 #include <sound/soc-dapm.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <asm/hardware/scoop.h>
  33 #include <asm/arch/pxa-regs.h>
  34 #include <asm/arch/hardware.h>
  35 #include <asm/arch/akita.h>
  36 #include <asm/arch/spitz.h>
  37 #include <asm/mach-types.h>
  38 #include "../codecs/wm8750.h"
  39 #include "pxa2xx-pcm.h"
  40 #include "pxa2xx-i2s.h"
  41
  42 #define SPITZ_HP        0
  43 #define SPITZ_MIC       1
  44 #define SPITZ_LINE      2
  45 #define SPITZ_HEADSET   3
  46 #define SPITZ_HP_OFF    4
  47 #define SPITZ_SPK_ON    0
  48 #define SPITZ_SPK_OFF   1
  49
  50  /* audio clock in Hz - rounded from 12.235MHz */
  51 #define SPITZ_AUDIO_CLOCK 12288000
  52
  53 static int spitz_jack_func;
  54 static int spitz_spk_func;
  55
  56 static void spitz_ext_control(struct snd_soc_codec *codec)
  57 {
  58         if (spitz_spk_func == SPITZ_SPK_ON)
  59                 snd_soc_dapm_set_endpoint(codec, "Ext Spk", 1);
  60         else
  61                 snd_soc_dapm_set_endpoint(codec, "Ext Spk", 0);
  62
  63         /* set up jack connection */
  64         switch (spitz_jack_func) {
  65         case SPITZ_HP:
  66                 /* enable and unmute hp jack, disable mic bias */
  67                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
  68                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
  69                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
  70                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
  71                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
  72                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
  73                 break;
  74         case SPITZ_MIC:
  75                 /* enable mic jack and bias, mute hp */
  76                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
  77                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
  78                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
  79                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
  80                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
  81                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
  82                 break;
  83         case SPITZ_LINE:
  84                 /* enable line jack, disable mic bias and mute hp */
  85                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
  86                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
  87                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
  88                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 1);
  89                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
  90                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
  91                 break;
  92         case SPITZ_HEADSET:
  93                 /* enable and unmute headset jack enable mic bias, mute L hp */
  94                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
  95                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
  96                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
  97                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 1);
  98                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
  99                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
 100                 break;
 101         case SPITZ_HP_OFF:
 102
 103                 /* jack removed, everything off */
 104                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
 105                 snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
 106                 snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
 107                 snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
 108                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
 109                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
 110                 break;
 111         }
 112         snd_soc_dapm_sync_endpoints(codec);
 113 }
 114
 115 static int spitz_startup(struct snd_pcm_substream *substream)
 116 {
 117         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 118         struct snd_soc_codec *codec = rtd->socdev->codec;
 119
 120         /* check the jack status at stream startup */
 121         spitz_ext_control(codec);
 122         return 0;
 123 }
 124
 125 static int spitz_hw_params(struct snd_pcm_substream *substream,
 126         struct snd_pcm_hw_params *params)
 127 {
 128         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 129         struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
 130         struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
 131         unsigned int clk = 0;
 132         int ret = 0;
 133
 134         switch (params_rate(params)) {
 135         case 8000:
 136         case 16000:
 137         case 48000:
 138         case 96000:
 139                 clk = 12288000;
 140                 break;
 141         case 11025:
 142         case 22050:
 143         case 44100:
 144                 clk = 11289600;
 145                 break;
 146         }
 147
 148         /* set codec DAI configuration */
 149         ret = codec_dai->dai_ops.set_fmt(codec_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 cpu DAI configuration */
 155         ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 156                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 157         if (ret < 0)
 158                 return ret;
 159
 160         /* set the codec system clock for DAC and ADC */
 161         ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 162                 SND_SOC_CLOCK_IN);
 163         if (ret < 0)
 164                 return ret;
 165
 166         /* set the I2S system clock as input (unused) */
 167         ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 168                 SND_SOC_CLOCK_IN);
 169         if (ret < 0)
 170                 return ret;
 171
 172         return 0;
 173 }
 174
 175 static struct snd_soc_ops spitz_ops = {
 176         .startup = spitz_startup,
 177         .hw_params = spitz_hw_params,
 178 };
 179
 180 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 181         struct snd_ctl_elem_value *ucontrol)
 182 {
 183         ucontrol->value.integer.value[0] = spitz_jack_func;
 184         return 0;
 185 }
 186
 187 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 188         struct snd_ctl_elem_value *ucontrol)
 189 {
 190         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 191
 192         if (spitz_jack_func == ucontrol->value.integer.value[0])
 193                 return 0;
 194
 195         spitz_jack_func = ucontrol->value.integer.value[0];
 196         spitz_ext_control(codec);
 197         return 1;
 198 }
 199
 200 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 201         struct snd_ctl_elem_value *ucontrol)
 202 {
 203         ucontrol->value.integer.value[0] = spitz_spk_func;
 204         return 0;
 205 }
 206
 207 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 208         struct snd_ctl_elem_value *ucontrol)
 209 {
 210         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 211
 212         if (spitz_spk_func == ucontrol->value.integer.value[0])
 213                 return 0;
 214
 215         spitz_spk_func = ucontrol->value.integer.value[0];
 216         spitz_ext_control(codec);
 217         return 1;
 218 }
 219
 220 static int spitz_mic_bias(struct snd_soc_dapm_widget *w, int event)
 221 {
 222         if (machine_is_borzoi() || machine_is_spitz()) {
 223                 if (SND_SOC_DAPM_EVENT_ON(event))
 224                         set_scoop_gpio(&spitzscoop2_device.dev,
 225                                 SPITZ_SCP2_MIC_BIAS);
 226                 else
 227                         reset_scoop_gpio(&spitzscoop2_device.dev,
 228                                 SPITZ_SCP2_MIC_BIAS);
 229         }
 230
 231         if (machine_is_akita()) {
 232                 if (SND_SOC_DAPM_EVENT_ON(event))
 233                         akita_set_ioexp(&akitaioexp_device.dev,
 234                                 AKITA_IOEXP_MIC_BIAS);
 235                 else
 236                         akita_reset_ioexp(&akitaioexp_device.dev,
 237                                 AKITA_IOEXP_MIC_BIAS);
 238         }
 239         return 0;
 240 }
 241
 242 /* spitz machine dapm widgets */
 243 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 244         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 245         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 246         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 247         SND_SOC_DAPM_LINE("Line Jack", NULL),
 248
 249         /* headset is a mic and mono headphone */
 250         SND_SOC_DAPM_HP("Headset Jack", NULL),
 251 };
 252
 253 /* Spitz machine audio_map */
 254 static const char *audio_map[][3] = {
 255
 256         /* headphone connected to LOUT1, ROUT1 */
 257         {"Headphone Jack", NULL, "LOUT1"},
 258         {"Headphone Jack", NULL, "ROUT1"},
 259
 260         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 261         {"Headset Jack", NULL, "ROUT1"},
 262
 263         /* ext speaker connected to LOUT2, ROUT2  */
 264         {"Ext Spk", NULL , "ROUT2"},
 265         {"Ext Spk", NULL , "LOUT2"},
 266
 267         /* mic is connected to input 1 - with bias */
 268         {"LINPUT1", NULL, "Mic Bias"},
 269         {"Mic Bias", NULL, "Mic Jack"},
 270
 271         /* line is connected to input 1 - no bias */
 272         {"LINPUT1", NULL, "Line Jack"},
 273
 274         {NULL, NULL, NULL},
 275 };
 276
 277 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 278         "Off"};
 279 static const char *spk_function[] = {"On", "Off"};
 280 static const struct soc_enum spitz_enum[] = {
 281         SOC_ENUM_SINGLE_EXT(5, jack_function),
 282         SOC_ENUM_SINGLE_EXT(2, spk_function),
 283 };
 284
 285 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 286         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 287                 spitz_set_jack),
 288         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 289                 spitz_set_spk),
 290 };
 291
 292 /*
 293  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 294  */
 295 static int spitz_wm8750_init(struct snd_soc_codec *codec)
 296 {
 297         int i, err;
 298
 299         /* NC codec pins */
 300         snd_soc_dapm_set_endpoint(codec, "RINPUT1", 0);
 301         snd_soc_dapm_set_endpoint(codec, "LINPUT2", 0);
 302         snd_soc_dapm_set_endpoint(codec, "RINPUT2", 0);
 303         snd_soc_dapm_set_endpoint(codec, "LINPUT3", 0);
 304         snd_soc_dapm_set_endpoint(codec, "RINPUT3", 0);
 305         snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
 306         snd_soc_dapm_set_endpoint(codec, "MONO", 0);
 307
 308         /* Add spitz specific controls */
 309         for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
 310                 err = snd_ctl_add(codec->card,
 311                         snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
 312                 if (err < 0)
 313                         return err;
 314         }
 315
 316         /* Add spitz specific widgets */
 317         for (i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++) {
 318                 snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);
 319         }
 320
 321         /* Set up spitz specific audio path audio_map */
 322         for (i = 0; audio_map[i][0] != NULL; i++) {
 323                 snd_soc_dapm_connect_input(codec, audio_map[i][0],
 324                         audio_map[i][1], audio_map[i][2]);
 325         }
 326
 327         snd_soc_dapm_sync_endpoints(codec);
 328         return 0;
 329 }
 330
 331 /* spitz digital audio interface glue - connects codec <--> CPU */
 332 static struct snd_soc_dai_link spitz_dai = {
 333         .name = "wm8750",
 334         .stream_name = "WM8750",
 335         .cpu_dai = &pxa_i2s_dai,
 336         .codec_dai = &wm8750_dai,
 337         .init = spitz_wm8750_init,
 338         .ops = &spitz_ops,
 339 };
 340
 341 /* spitz audio machine driver */
 342 static struct snd_soc_machine snd_soc_machine_spitz = {
 343         .name = "Spitz",
 344         .dai_link = &spitz_dai,
 345         .num_links = 1,
 346 };
 347
 348 /* spitz audio private data */
 349 static struct wm8750_setup_data spitz_wm8750_setup = {
 350         .i2c_address = 0x1b,
 351 };
 352
 353 /* spitz audio subsystem */
 354 static struct snd_soc_device spitz_snd_devdata = {
 355         .machine = &snd_soc_machine_spitz,
 356         .platform = &pxa2xx_soc_platform,
 357         .codec_dev = &soc_codec_dev_wm8750,
 358         .codec_data = &spitz_wm8750_setup,
 359 };
 360
 361 static struct platform_device *spitz_snd_device;
 362
 363 static int __init spitz_init(void)
 364 {
 365         int ret;
 366
 367         if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 368                 return -ENODEV;
 369
 370         spitz_snd_device = platform_device_alloc("soc-audio", -1);
 371         if (!spitz_snd_device)
 372                 return -ENOMEM;
 373
 374         platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
 375         spitz_snd_devdata.dev = &spitz_snd_device->dev;
 376         ret = platform_device_add(spitz_snd_device);
 377
 378         if (ret)
 379                 platform_device_put(spitz_snd_device);
 380
 381         return ret;
 382 }
 383
 384 static void __exit spitz_exit(void)
 385 {
 386         platform_device_unregister(spitz_snd_device);
 387 }
 388
 389 module_init(spitz_init);
 390 module_exit(spitz_exit);
 391
 392 MODULE_AUTHOR("Richard Purdie");
 393 MODULE_DESCRIPTION("ALSA SoC Spitz");
 394 MODULE_LICENSE("GPL");