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 #include <sound/soc-dapm.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <mach/spitz.h>
  30 #include "../codecs/wm8750.h"
  31 #include "pxa2xx-i2s.h"
  32
  33 #define SPITZ_HP        0
  34 #define SPITZ_MIC       1
  35 #define SPITZ_LINE      2
  36 #define SPITZ_HEADSET   3
  37 #define SPITZ_HP_OFF    4
  38 #define SPITZ_SPK_ON    0
  39 #define SPITZ_SPK_OFF   1
  40
  41  /* audio clock in Hz - rounded from 12.235MHz */
  42 #define SPITZ_AUDIO_CLOCK 12288000
  43
  44 static int spitz_jack_func;
  45 static int spitz_spk_func;
  46
  47 static void spitz_ext_control(struct snd_soc_codec *codec)
  48 {
  49         if (spitz_spk_func == SPITZ_SPK_ON)
  50                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  51         else
  52                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  53
  54         /* set up jack connection */
  55         switch (spitz_jack_func) {
  56         case SPITZ_HP:
  57                 /* enable and unmute hp jack, disable mic bias */
  58                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  59                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  60                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  61                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  62                 gpio_set_value(SPITZ_GPIO_MUTE_L, 1);
  63                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  64                 break;
  65         case SPITZ_MIC:
  66                 /* enable mic jack and bias, mute hp */
  67                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  68                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  69                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  70                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  71                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  72                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  73                 break;
  74         case SPITZ_LINE:
  75                 /* enable line jack, disable mic bias and mute hp */
  76                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  77                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  78                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  79                 snd_soc_dapm_enable_pin(codec, "Line Jack");
  80                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  81                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
  82                 break;
  83         case SPITZ_HEADSET:
  84                 /* enable and unmute headset jack enable mic bias, mute L hp */
  85                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  86                 snd_soc_dapm_enable_pin(codec, "Mic Jack");
  87                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  88                 snd_soc_dapm_enable_pin(codec, "Headset Jack");
  89                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
  90                 gpio_set_value(SPITZ_GPIO_MUTE_R, 1);
  91                 break;
  92         case SPITZ_HP_OFF:
  93
  94                 /* jack removed, everything off */
  95                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  96                 snd_soc_dapm_disable_pin(codec, "Headset Jack");
  97                 snd_soc_dapm_disable_pin(codec, "Mic Jack");
  98                 snd_soc_dapm_disable_pin(codec, "Line Jack");
  99                 gpio_set_value(SPITZ_GPIO_MUTE_L, 0);
 100                 gpio_set_value(SPITZ_GPIO_MUTE_R, 0);
 101                 break;
 102         }
 103         snd_soc_dapm_sync(codec);
 104 }
 105
 106 static int spitz_startup(struct snd_pcm_substream *substream)
 107 {
 108         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 109         struct snd_soc_codec *codec = rtd->codec;
 110
 111         /* check the jack status at stream startup */
 112         spitz_ext_control(codec);
 113         return 0;
 114 }
 115
 116 static int spitz_hw_params(struct snd_pcm_substream *substream,
 117         struct snd_pcm_hw_params *params)
 118 {
 119         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 120         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 121         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 122         unsigned int clk = 0;
 123         int ret = 0;
 124
 125         switch (params_rate(params)) {
 126         case 8000:
 127         case 16000:
 128         case 48000:
 129         case 96000:
 130                 clk = 12288000;
 131                 break;
 132         case 11025:
 133         case 22050:
 134         case 44100:
 135                 clk = 11289600;
 136                 break;
 137         }
 138
 139         /* set codec DAI configuration */
 140         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 141                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 142         if (ret < 0)
 143                 return ret;
 144
 145         /* set cpu DAI configuration */
 146         ret = snd_soc_dai_set_fmt(cpu_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 the codec system clock for DAC and ADC */
 152         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 153                 SND_SOC_CLOCK_IN);
 154         if (ret < 0)
 155                 return ret;
 156
 157         /* set the I2S system clock as input (unused) */
 158         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 159                 SND_SOC_CLOCK_IN);
 160         if (ret < 0)
 161                 return ret;
 162
 163         return 0;
 164 }
 165
 166 static struct snd_soc_ops spitz_ops = {
 167         .startup = spitz_startup,
 168         .hw_params = spitz_hw_params,
 169 };
 170
 171 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 172         struct snd_ctl_elem_value *ucontrol)
 173 {
 174         ucontrol->value.integer.value[0] = spitz_jack_func;
 175         return 0;
 176 }
 177
 178 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 179         struct snd_ctl_elem_value *ucontrol)
 180 {
 181         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 182
 183         if (spitz_jack_func == ucontrol->value.integer.value[0])
 184                 return 0;
 185
 186         spitz_jack_func = ucontrol->value.integer.value[0];
 187         spitz_ext_control(codec);
 188         return 1;
 189 }
 190
 191 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 192         struct snd_ctl_elem_value *ucontrol)
 193 {
 194         ucontrol->value.integer.value[0] = spitz_spk_func;
 195         return 0;
 196 }
 197
 198 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 199         struct snd_ctl_elem_value *ucontrol)
 200 {
 201         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 202
 203         if (spitz_spk_func == ucontrol->value.integer.value[0])
 204                 return 0;
 205
 206         spitz_spk_func = ucontrol->value.integer.value[0];
 207         spitz_ext_control(codec);
 208         return 1;
 209 }
 210
 211 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 212         struct snd_kcontrol *k, int event)
 213 {
 214         if (machine_is_borzoi() || machine_is_spitz())
 215                 gpio_set_value(SPITZ_GPIO_MIC_BIAS,
 216                                 SND_SOC_DAPM_EVENT_ON(event));
 217
 218         if (machine_is_akita())
 219                 gpio_set_value(AKITA_GPIO_MIC_BIAS,
 220                                 SND_SOC_DAPM_EVENT_ON(event));
 221
 222         return 0;
 223 }
 224
 225 /* spitz machine dapm widgets */
 226 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 227         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 228         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 229         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 230         SND_SOC_DAPM_LINE("Line Jack", NULL),
 231
 232         /* headset is a mic and mono headphone */
 233         SND_SOC_DAPM_HP("Headset Jack", NULL),
 234 };
 235
 236 /* Spitz machine audio_map */
 237 static const struct snd_soc_dapm_route audio_map[] = {
 238
 239         /* headphone connected to LOUT1, ROUT1 */
 240         {"Headphone Jack", NULL, "LOUT1"},
 241         {"Headphone Jack", NULL, "ROUT1"},
 242
 243         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 244         {"Headset Jack", NULL, "ROUT1"},
 245
 246         /* ext speaker connected to LOUT2, ROUT2  */
 247         {"Ext Spk", NULL , "ROUT2"},
 248         {"Ext Spk", NULL , "LOUT2"},
 249
 250         /* mic is connected to input 1 - with bias */
 251         {"LINPUT1", NULL, "Mic Bias"},
 252         {"Mic Bias", NULL, "Mic Jack"},
 253
 254         /* line is connected to input 1 - no bias */
 255         {"LINPUT1", NULL, "Line Jack"},
 256 };
 257
 258 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 259         "Off"};
 260 static const char *spk_function[] = {"On", "Off"};
 261 static const struct soc_enum spitz_enum[] = {
 262         SOC_ENUM_SINGLE_EXT(5, jack_function),
 263         SOC_ENUM_SINGLE_EXT(2, spk_function),
 264 };
 265
 266 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 267         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 268                 spitz_set_jack),
 269         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 270                 spitz_set_spk),
 271 };
 272
 273 /*
 274  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
 275  */
 276 static int spitz_wm8750_init(struct snd_soc_pcm_runtime *rtd)
 277 {
 278         struct snd_soc_codec *codec = rtd->codec;
 279         int err;
 280
 281         /* NC codec pins */
 282         snd_soc_dapm_nc_pin(codec, "RINPUT1");
 283         snd_soc_dapm_nc_pin(codec, "LINPUT2");
 284         snd_soc_dapm_nc_pin(codec, "RINPUT2");
 285         snd_soc_dapm_nc_pin(codec, "LINPUT3");
 286         snd_soc_dapm_nc_pin(codec, "RINPUT3");
 287         snd_soc_dapm_nc_pin(codec, "OUT3");
 288         snd_soc_dapm_nc_pin(codec, "MONO1");
 289
 290         /* Add spitz specific controls */
 291         err = snd_soc_add_controls(codec, wm8750_spitz_controls,
 292                                 ARRAY_SIZE(wm8750_spitz_controls));
 293         if (err < 0)
 294                 return err;
 295
 296         /* Add spitz specific widgets */
 297         snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 298                                   ARRAY_SIZE(wm8750_dapm_widgets));
 299
 300         /* Set up spitz specific audio paths */
 301         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 302
 303         snd_soc_dapm_sync(codec);
 304         return 0;
 305 }
 306
 307 /* spitz digital audio interface glue - connects codec <--> CPU */
 308 static struct snd_soc_dai_link spitz_dai = {
 309         .name = "wm8750",
 310         .stream_name = "WM8750",
 311         .cpu_dai_name = "pxa-is2",
 312         .codec_dai_name = "wm8750-hifi",
 313         .platform_name = "pxa-pcm-audio",
 314         .codec_name = "wm8750-codec.0-001a",
 315         .init = spitz_wm8750_init,
 316         .ops = &spitz_ops,
 317 };
 318
 319 /* spitz audio machine driver */
 320 static struct snd_soc_card snd_soc_spitz = {
 321         .name = "Spitz",
 322         .dai_link = &spitz_dai,
 323         .num_links = 1,
 324 };
 325
 326 static struct platform_device *spitz_snd_device;
 327
 328 static int __init spitz_init(void)
 329 {
 330         int ret;
 331
 332         if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 333                 return -ENODEV;
 334
 335         spitz_snd_device = platform_device_alloc("soc-audio", -1);
 336         if (!spitz_snd_device)
 337                 return -ENOMEM;
 338
 339         platform_set_drvdata(spitz_snd_device, &snd_soc_spitz);
 340         ret = platform_device_add(spitz_snd_device);
 341
 342         if (ret)
 343                 platform_device_put(spitz_snd_device);
 344
 345         return ret;
 346 }
 347
 348 static void __exit spitz_exit(void)
 349 {
 350         platform_device_unregister(spitz_snd_device);
 351 }
 352
 353 module_init(spitz_init);
 354 module_exit(spitz_exit);
 355
 356 MODULE_AUTHOR("Richard Purdie");
 357 MODULE_DESCRIPTION("ALSA SoC Spitz");
 358 MODULE_LICENSE("GPL");