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 static int spitz_mic_gpio;
  46
  47 static void spitz_ext_control(struct snd_soc_dapm_context *dapm)
  48 {
  49         snd_soc_dapm_mutex_lock(dapm);
  50
  51         if (spitz_spk_func == SPITZ_SPK_ON)
  52                 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
  53         else
  54                 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
  55
  56         /* set up jack connection */
  57         switch (spitz_jack_func) {
  58         case SPITZ_HP:
  59                 /* enable and unmute hp jack, disable mic bias */
  60                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  61                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
  62                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
  63                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  64                 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
  65                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  66                 break;
  67         case SPITZ_MIC:
  68                 /* enable mic jack and bias, mute hp */
  69                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  70                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  71                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
  72                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
  73                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  74                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  75                 break;
  76         case SPITZ_LINE:
  77                 /* enable line jack, disable mic bias and mute hp */
  78                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  79                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  80                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
  81                 snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
  82                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  83                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  84                 break;
  85         case SPITZ_HEADSET:
  86                 /* enable and unmute headset jack enable mic bias, mute L hp */
  87                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  88                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
  89                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
  90                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
  91                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  92                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  93                 break;
  94         case SPITZ_HP_OFF:
  95
  96                 /* jack removed, everything off */
  97                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  98                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  99                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
 100                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
 101                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 102                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 103                 break;
 104         }
 105
 106         snd_soc_dapm_sync_unlocked(dapm);
 107
 108         snd_soc_dapm_mutex_unlock(dapm);
 109 }
 110
 111 static int spitz_startup(struct snd_pcm_substream *substream)
 112 {
 113         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 114
 115         /* check the jack status at stream startup */
 116         spitz_ext_control(&rtd->card->dapm);
 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 the codec system clock for DAC and ADC */
 145         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 146                 SND_SOC_CLOCK_IN);
 147         if (ret < 0)
 148                 return ret;
 149
 150         /* set the I2S system clock as input (unused) */
 151         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 152                 SND_SOC_CLOCK_IN);
 153         if (ret < 0)
 154                 return ret;
 155
 156         return 0;
 157 }
 158
 159 static struct snd_soc_ops spitz_ops = {
 160         .startup = spitz_startup,
 161         .hw_params = spitz_hw_params,
 162 };
 163
 164 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 165         struct snd_ctl_elem_value *ucontrol)
 166 {
 167         ucontrol->value.enumerated.item[0] = spitz_jack_func;
 168         return 0;
 169 }
 170
 171 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 172         struct snd_ctl_elem_value *ucontrol)
 173 {
 174         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 175
 176         if (spitz_jack_func == ucontrol->value.enumerated.item[0])
 177                 return 0;
 178
 179         spitz_jack_func = ucontrol->value.enumerated.item[0];
 180         spitz_ext_control(&card->dapm);
 181         return 1;
 182 }
 183
 184 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 185         struct snd_ctl_elem_value *ucontrol)
 186 {
 187         ucontrol->value.enumerated.item[0] = spitz_spk_func;
 188         return 0;
 189 }
 190
 191 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 192         struct snd_ctl_elem_value *ucontrol)
 193 {
 194         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 195
 196         if (spitz_spk_func == ucontrol->value.enumerated.item[0])
 197                 return 0;
 198
 199         spitz_spk_func = ucontrol->value.enumerated.item[0];
 200         spitz_ext_control(&card->dapm);
 201         return 1;
 202 }
 203
 204 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 205         struct snd_kcontrol *k, int event)
 206 {
 207         gpio_set_value_cansleep(spitz_mic_gpio, SND_SOC_DAPM_EVENT_ON(event));
 208         return 0;
 209 }
 210
 211 /* spitz machine dapm widgets */
 212 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 213         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 214         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 215         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 216         SND_SOC_DAPM_LINE("Line Jack", NULL),
 217
 218         /* headset is a mic and mono headphone */
 219         SND_SOC_DAPM_HP("Headset Jack", NULL),
 220 };
 221
 222 /* Spitz machine audio_map */
 223 static const struct snd_soc_dapm_route spitz_audio_map[] = {
 224
 225         /* headphone connected to LOUT1, ROUT1 */
 226         {"Headphone Jack", NULL, "LOUT1"},
 227         {"Headphone Jack", NULL, "ROUT1"},
 228
 229         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 230         {"Headset Jack", NULL, "ROUT1"},
 231
 232         /* ext speaker connected to LOUT2, ROUT2  */
 233         {"Ext Spk", NULL , "ROUT2"},
 234         {"Ext Spk", NULL , "LOUT2"},
 235
 236         /* mic is connected to input 1 - with bias */
 237         {"LINPUT1", NULL, "Mic Bias"},
 238         {"Mic Bias", NULL, "Mic Jack"},
 239
 240         /* line is connected to input 1 - no bias */
 241         {"LINPUT1", NULL, "Line Jack"},
 242 };
 243
 244 static const char * const jack_function[] = {"Headphone", "Mic", "Line",
 245         "Headset", "Off"};
 246 static const char * const spk_function[] = {"On", "Off"};
 247 static const struct soc_enum spitz_enum[] = {
 248         SOC_ENUM_SINGLE_EXT(5, jack_function),
 249         SOC_ENUM_SINGLE_EXT(2, spk_function),
 250 };
 251
 252 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 253         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 254                 spitz_set_jack),
 255         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 256                 spitz_set_spk),
 257 };
 258
 259 /* spitz digital audio interface glue - connects codec <--> CPU */
 260 static struct snd_soc_dai_link spitz_dai = {
 261         .name = "wm8750",
 262         .stream_name = "WM8750",
 263         .cpu_dai_name = "pxa2xx-i2s",
 264         .codec_dai_name = "wm8750-hifi",
 265         .platform_name = "pxa-pcm-audio",
 266         .codec_name = "wm8750.0-001b",
 267         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 268                    SND_SOC_DAIFMT_CBS_CFS,
 269         .ops = &spitz_ops,
 270 };
 271
 272 /* spitz audio machine driver */
 273 static struct snd_soc_card snd_soc_spitz = {
 274         .name = "Spitz",
 275         .owner = THIS_MODULE,
 276         .dai_link = &spitz_dai,
 277         .num_links = 1,
 278
 279         .controls = wm8750_spitz_controls,
 280         .num_controls = ARRAY_SIZE(wm8750_spitz_controls),
 281         .dapm_widgets = wm8750_dapm_widgets,
 282         .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
 283         .dapm_routes = spitz_audio_map,
 284         .num_dapm_routes = ARRAY_SIZE(spitz_audio_map),
 285         .fully_routed = true,
 286 };
 287
 288 static int spitz_probe(struct platform_device *pdev)
 289 {
 290         struct snd_soc_card *card = &snd_soc_spitz;
 291         int ret;
 292
 293         if (machine_is_akita())
 294                 spitz_mic_gpio = AKITA_GPIO_MIC_BIAS;
 295         else
 296                 spitz_mic_gpio = SPITZ_GPIO_MIC_BIAS;
 297
 298         ret = gpio_request(spitz_mic_gpio, "MIC GPIO");
 299         if (ret)
 300                 goto err1;
 301
 302         ret = gpio_direction_output(spitz_mic_gpio, 0);
 303         if (ret)
 304                 goto err2;
 305
 306         card->dev = &pdev->dev;
 307
 308         ret = devm_snd_soc_register_card(&pdev->dev, card);
 309         if (ret) {
 310                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 311                         ret);
 312                 goto err2;
 313         }
 314
 315         return 0;
 316
 317 err2:
 318         gpio_free(spitz_mic_gpio);
 319 err1:
 320         return ret;
 321 }
 322
 323 static int spitz_remove(struct platform_device *pdev)
 324 {
 325         gpio_free(spitz_mic_gpio);
 326         return 0;
 327 }
 328
 329 static struct platform_driver spitz_driver = {
 330         .driver         = {
 331                 .name   = "spitz-audio",
 332                 .pm     = &snd_soc_pm_ops,
 333         },
 334         .probe          = spitz_probe,
 335         .remove         = spitz_remove,
 336 };
 337
 338 module_platform_driver(spitz_driver);
 339
 340 MODULE_AUTHOR("Richard Purdie");
 341 MODULE_DESCRIPTION("ALSA SoC Spitz");
 342 MODULE_LICENSE("GPL");
 343 MODULE_ALIAS("platform:spitz-audio");