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
  46 static void spitz_ext_control(struct snd_soc_codec *codec)
  47 {
  48         struct snd_soc_dapm_context *dapm = &codec->dapm;
  49
  50         if (spitz_spk_func == SPITZ_SPK_ON)
  51                 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
  52         else
  53                 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
  54
  55         /* set up jack connection */
  56         switch (spitz_jack_func) {
  57         case SPITZ_HP:
  58                 /* enable and unmute hp jack, disable mic bias */
  59                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  60                 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
  61                 snd_soc_dapm_disable_pin(dapm, "Line Jack");
  62                 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
  63                 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
  64                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  65                 break;
  66         case SPITZ_MIC:
  67                 /* enable mic jack and bias, mute hp */
  68                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  69                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  70                 snd_soc_dapm_disable_pin(dapm, "Line Jack");
  71                 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
  72                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  73                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  74                 break;
  75         case SPITZ_LINE:
  76                 /* enable line jack, disable mic bias and mute hp */
  77                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  78                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  79                 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
  80                 snd_soc_dapm_enable_pin(dapm, "Line Jack");
  81                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  82                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  83                 break;
  84         case SPITZ_HEADSET:
  85                 /* enable and unmute headset jack enable mic bias, mute L hp */
  86                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  87                 snd_soc_dapm_enable_pin(dapm, "Mic Jack");
  88                 snd_soc_dapm_disable_pin(dapm, "Line Jack");
  89                 snd_soc_dapm_enable_pin(dapm, "Headset Jack");
  90                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  91                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  92                 break;
  93         case SPITZ_HP_OFF:
  94
  95                 /* jack removed, everything off */
  96                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  97                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
  98                 snd_soc_dapm_disable_pin(dapm, "Mic Jack");
  99                 snd_soc_dapm_disable_pin(dapm, "Line Jack");
 100                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 101                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 102                 break;
 103         }
 104         snd_soc_dapm_sync(dapm);
 105 }
 106
 107 static int spitz_startup(struct snd_pcm_substream *substream)
 108 {
 109         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 110         struct snd_soc_codec *codec = rtd->codec;
 111
 112         mutex_lock(&codec->mutex);
 113
 114         /* check the jack status at stream startup */
 115         spitz_ext_control(codec);
 116
 117         mutex_unlock(&codec->mutex);
 118
 119         return 0;
 120 }
 121
 122 static int spitz_hw_params(struct snd_pcm_substream *substream,
 123         struct snd_pcm_hw_params *params)
 124 {
 125         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 126         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 127         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 128         unsigned int clk = 0;
 129         int ret = 0;
 130
 131         switch (params_rate(params)) {
 132         case 8000:
 133         case 16000:
 134         case 48000:
 135         case 96000:
 136                 clk = 12288000;
 137                 break;
 138         case 11025:
 139         case 22050:
 140         case 44100:
 141                 clk = 11289600;
 142                 break;
 143         }
 144
 145         /* set codec DAI configuration */
 146         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 147                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 148         if (ret < 0)
 149                 return ret;
 150
 151         /* set cpu DAI configuration */
 152         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 153                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 154         if (ret < 0)
 155                 return ret;
 156
 157         /* set the codec system clock for DAC and ADC */
 158         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 159                 SND_SOC_CLOCK_IN);
 160         if (ret < 0)
 161                 return ret;
 162
 163         /* set the I2S system clock as input (unused) */
 164         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 165                 SND_SOC_CLOCK_IN);
 166         if (ret < 0)
 167                 return ret;
 168
 169         return 0;
 170 }
 171
 172 static struct snd_soc_ops spitz_ops = {
 173         .startup = spitz_startup,
 174         .hw_params = spitz_hw_params,
 175 };
 176
 177 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 178         struct snd_ctl_elem_value *ucontrol)
 179 {
 180         ucontrol->value.integer.value[0] = spitz_jack_func;
 181         return 0;
 182 }
 183
 184 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 185         struct snd_ctl_elem_value *ucontrol)
 186 {
 187         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 188
 189         if (spitz_jack_func == ucontrol->value.integer.value[0])
 190                 return 0;
 191
 192         spitz_jack_func = ucontrol->value.integer.value[0];
 193         spitz_ext_control(codec);
 194         return 1;
 195 }
 196
 197 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 198         struct snd_ctl_elem_value *ucontrol)
 199 {
 200         ucontrol->value.integer.value[0] = spitz_spk_func;
 201         return 0;
 202 }
 203
 204 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 205         struct snd_ctl_elem_value *ucontrol)
 206 {
 207         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 208
 209         if (spitz_spk_func == ucontrol->value.integer.value[0])
 210                 return 0;
 211
 212         spitz_spk_func = ucontrol->value.integer.value[0];
 213         spitz_ext_control(codec);
 214         return 1;
 215 }
 216
 217 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 218         struct snd_kcontrol *k, int event)
 219 {
 220         if (machine_is_borzoi() || machine_is_spitz())
 221                 gpio_set_value(SPITZ_GPIO_MIC_BIAS,
 222                                 SND_SOC_DAPM_EVENT_ON(event));
 223
 224         if (machine_is_akita())
 225                 gpio_set_value(AKITA_GPIO_MIC_BIAS,
 226                                 SND_SOC_DAPM_EVENT_ON(event));
 227
 228         return 0;
 229 }
 230
 231 /* spitz machine dapm widgets */
 232 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 233         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 234         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 235         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 236         SND_SOC_DAPM_LINE("Line Jack", NULL),
 237
 238         /* headset is a mic and mono headphone */
 239         SND_SOC_DAPM_HP("Headset Jack", NULL),
 240 };
 241
 242 /* Spitz machine audio_map */
 243 static const struct snd_soc_dapm_route audio_map[] = {
 244
 245         /* headphone connected to LOUT1, ROUT1 */
 246         {"Headphone Jack", NULL, "LOUT1"},
 247         {"Headphone Jack", NULL, "ROUT1"},
 248
 249         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 250         {"Headset Jack", NULL, "ROUT1"},
 251
 252         /* ext speaker connected to LOUT2, ROUT2  */
 253         {"Ext Spk", NULL , "ROUT2"},
 254         {"Ext Spk", NULL , "LOUT2"},
 255
 256         /* mic is connected to input 1 - with bias */
 257         {"LINPUT1", NULL, "Mic Bias"},
 258         {"Mic Bias", NULL, "Mic Jack"},
 259
 260         /* line is connected to input 1 - no bias */
 261         {"LINPUT1", NULL, "Line Jack"},
 262 };
 263
 264 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 265         "Off"};
 266 static const char *spk_function[] = {"On", "Off"};
 267 static const struct soc_enum spitz_enum[] = {
 268         SOC_ENUM_SINGLE_EXT(5, jack_function),
 269         SOC_ENUM_SINGLE_EXT(2, spk_function),
 270 };
 271
 272 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 273         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 274                 spitz_set_jack),
 275         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 276                 spitz_set_spk),
 277 };
 278
 279 /*
 280  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 281  */
 282 static int spitz_wm8750_init(struct snd_soc_pcm_runtime *rtd)
 283 {
 284         struct snd_soc_codec *codec = rtd->codec;
 285         struct snd_soc_dapm_context *dapm = &codec->dapm;
 286         int err;
 287
 288         /* NC codec pins */
 289         snd_soc_dapm_nc_pin(dapm, "RINPUT1");
 290         snd_soc_dapm_nc_pin(dapm, "LINPUT2");
 291         snd_soc_dapm_nc_pin(dapm, "RINPUT2");
 292         snd_soc_dapm_nc_pin(dapm, "LINPUT3");
 293         snd_soc_dapm_nc_pin(dapm, "RINPUT3");
 294         snd_soc_dapm_nc_pin(dapm, "OUT3");
 295         snd_soc_dapm_nc_pin(dapm, "MONO1");
 296
 297         /* Add spitz specific controls */
 298         err = snd_soc_add_controls(codec, wm8750_spitz_controls,
 299                                 ARRAY_SIZE(wm8750_spitz_controls));
 300         if (err < 0)
 301                 return err;
 302
 303         /* Add spitz specific widgets */
 304         snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
 305                                   ARRAY_SIZE(wm8750_dapm_widgets));
 306
 307         /* Set up spitz specific audio paths */
 308         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 309
 310         snd_soc_dapm_sync(dapm);
 311         return 0;
 312 }
 313
 314 /* spitz digital audio interface glue - connects codec <--> CPU */
 315 static struct snd_soc_dai_link spitz_dai = {
 316         .name = "wm8750",
 317         .stream_name = "WM8750",
 318         .cpu_dai_name = "pxa-is2",
 319         .codec_dai_name = "wm8750-hifi",
 320         .platform_name = "pxa-pcm-audio",
 321         .codec_name = "wm8750-codec.0-001a",
 322         .init = spitz_wm8750_init,
 323         .ops = &spitz_ops,
 324 };
 325
 326 /* spitz audio machine driver */
 327 static struct snd_soc_card snd_soc_spitz = {
 328         .name = "Spitz",
 329         .dai_link = &spitz_dai,
 330         .num_links = 1,
 331 };
 332
 333 static struct platform_device *spitz_snd_device;
 334
 335 static int __init spitz_init(void)
 336 {
 337         int ret;
 338
 339         if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 340                 return -ENODEV;
 341
 342         spitz_snd_device = platform_device_alloc("soc-audio", -1);
 343         if (!spitz_snd_device)
 344                 return -ENOMEM;
 345
 346         platform_set_drvdata(spitz_snd_device, &snd_soc_spitz);
 347         ret = platform_device_add(spitz_snd_device);
 348
 349         if (ret)
 350                 platform_device_put(spitz_snd_device);
 351
 352         return ret;
 353 }
 354
 355 static void __exit spitz_exit(void)
 356 {
 357         platform_device_unregister(spitz_snd_device);
 358 }
 359
 360 module_init(spitz_init);
 361 module_exit(spitz_exit);
 362
 363 MODULE_AUTHOR("Richard Purdie");
 364 MODULE_DESCRIPTION("ALSA SoC Spitz");
 365 MODULE_LICENSE("GPL");