sound/soc/pxa/poodle.c

   1 /*
   2  * poodle.c  --  SoC audio for Poodle
   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/i2c.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/platform_device.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 <asm/hardware/locomo.h>
  30 #include <mach/poodle.h>
  31 #include <mach/audio.h>
  32
  33 #include "../codecs/wm8731.h"
  34 #include "pxa2xx-i2s.h"
  35
  36 #define POODLE_HP        1
  37 #define POODLE_HP_OFF    0
  38 #define POODLE_SPK_ON    1
  39 #define POODLE_SPK_OFF   0
  40
  41  /* audio clock in Hz - rounded from 12.235MHz */
  42 #define POODLE_AUDIO_CLOCK 12288000
  43
  44 static int poodle_jack_func;
  45 static int poodle_spk_func;
  46
  47 static void poodle_ext_control(struct snd_soc_codec *codec)
  48 {
  49         /* set up jack connection */
  50         if (poodle_jack_func == POODLE_HP) {
  51                 /* set = unmute headphone */
  52                 locomo_gpio_write(&poodle_locomo_device.dev,
  53                         POODLE_LOCOMO_GPIO_MUTE_L, 1);
  54                 locomo_gpio_write(&poodle_locomo_device.dev,
  55                         POODLE_LOCOMO_GPIO_MUTE_R, 1);
  56                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  57         } else {
  58                 locomo_gpio_write(&poodle_locomo_device.dev,
  59                         POODLE_LOCOMO_GPIO_MUTE_L, 0);
  60                 locomo_gpio_write(&poodle_locomo_device.dev,
  61                         POODLE_LOCOMO_GPIO_MUTE_R, 0);
  62                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  63         }
  64
  65         /* set the enpoints to their new connetion states */
  66         if (poodle_spk_func == POODLE_SPK_ON)
  67                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  68         else
  69                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  70
  71         /* signal a DAPM event */
  72         snd_soc_dapm_sync(codec);
  73 }
  74
  75 static int poodle_startup(struct snd_pcm_substream *substream)
  76 {
  77         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  78         struct snd_soc_codec *codec = rtd->codec;
  79
  80         mutex_lock(&codec->mutex);
  81
  82         /* check the jack status at stream startup */
  83         poodle_ext_control(codec);
  84
  85         mutex_unlock(&codec->mutex);
  86
  87         return 0;
  88 }
  89
  90 /* we need to unmute the HP at shutdown as the mute burns power on poodle */
  91 static void poodle_shutdown(struct snd_pcm_substream *substream)
  92 {
  93         /* set = unmute headphone */
  94         locomo_gpio_write(&poodle_locomo_device.dev,
  95                 POODLE_LOCOMO_GPIO_MUTE_L, 1);
  96         locomo_gpio_write(&poodle_locomo_device.dev,
  97                 POODLE_LOCOMO_GPIO_MUTE_R, 1);
  98 }
  99
 100 static int poodle_hw_params(struct snd_pcm_substream *substream,
 101         struct snd_pcm_hw_params *params)
 102 {
 103         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 104         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 105         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 106         unsigned int clk = 0;
 107         int ret = 0;
 108
 109         switch (params_rate(params)) {
 110         case 8000:
 111         case 16000:
 112         case 48000:
 113         case 96000:
 114                 clk = 12288000;
 115                 break;
 116         case 11025:
 117         case 22050:
 118         case 44100:
 119                 clk = 11289600;
 120                 break;
 121         }
 122
 123         /* set codec DAI configuration */
 124         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 125                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 126         if (ret < 0)
 127                 return ret;
 128
 129         /* set cpu DAI configuration */
 130         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 131                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 132         if (ret < 0)
 133                 return ret;
 134
 135         /* set the codec system clock for DAC and ADC */
 136         ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, clk,
 137                 SND_SOC_CLOCK_IN);
 138         if (ret < 0)
 139                 return ret;
 140
 141         /* set the I2S system clock as input (unused) */
 142         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 143                 SND_SOC_CLOCK_IN);
 144         if (ret < 0)
 145                 return ret;
 146
 147         return 0;
 148 }
 149
 150 static struct snd_soc_ops poodle_ops = {
 151         .startup = poodle_startup,
 152         .hw_params = poodle_hw_params,
 153         .shutdown = poodle_shutdown,
 154 };
 155
 156 static int poodle_get_jack(struct snd_kcontrol *kcontrol,
 157         struct snd_ctl_elem_value *ucontrol)
 158 {
 159         ucontrol->value.integer.value[0] = poodle_jack_func;
 160         return 0;
 161 }
 162
 163 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
 164         struct snd_ctl_elem_value *ucontrol)
 165 {
 166         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 167
 168         if (poodle_jack_func == ucontrol->value.integer.value[0])
 169                 return 0;
 170
 171         poodle_jack_func = ucontrol->value.integer.value[0];
 172         poodle_ext_control(codec);
 173         return 1;
 174 }
 175
 176 static int poodle_get_spk(struct snd_kcontrol *kcontrol,
 177         struct snd_ctl_elem_value *ucontrol)
 178 {
 179         ucontrol->value.integer.value[0] = poodle_spk_func;
 180         return 0;
 181 }
 182
 183 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
 184         struct snd_ctl_elem_value *ucontrol)
 185 {
 186         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 187
 188         if (poodle_spk_func == ucontrol->value.integer.value[0])
 189                 return 0;
 190
 191         poodle_spk_func = ucontrol->value.integer.value[0];
 192         poodle_ext_control(codec);
 193         return 1;
 194 }
 195
 196 static int poodle_amp_event(struct snd_soc_dapm_widget *w,
 197         struct snd_kcontrol *k, int event)
 198 {
 199         if (SND_SOC_DAPM_EVENT_ON(event))
 200                 locomo_gpio_write(&poodle_locomo_device.dev,
 201                         POODLE_LOCOMO_GPIO_AMP_ON, 0);
 202         else
 203                 locomo_gpio_write(&poodle_locomo_device.dev,
 204                         POODLE_LOCOMO_GPIO_AMP_ON, 1);
 205
 206         return 0;
 207 }
 208
 209 /* poodle machine dapm widgets */
 210 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 211 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 212 SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
 213 };
 214
 215 /* Corgi machine connections to the codec pins */
 216 static const struct snd_soc_dapm_route audio_map[] = {
 217
 218         /* headphone connected to LHPOUT1, RHPOUT1 */
 219         {"Headphone Jack", NULL, "LHPOUT"},
 220         {"Headphone Jack", NULL, "RHPOUT"},
 221
 222         /* speaker connected to LOUT, ROUT */
 223         {"Ext Spk", NULL, "ROUT"},
 224         {"Ext Spk", NULL, "LOUT"},
 225 };
 226
 227 static const char *jack_function[] = {"Off", "Headphone"};
 228 static const char *spk_function[] = {"Off", "On"};
 229 static const struct soc_enum poodle_enum[] = {
 230         SOC_ENUM_SINGLE_EXT(2, jack_function),
 231         SOC_ENUM_SINGLE_EXT(2, spk_function),
 232 };
 233
 234 static const struct snd_kcontrol_new wm8731_poodle_controls[] = {
 235         SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
 236                 poodle_set_jack),
 237         SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
 238                 poodle_set_spk),
 239 };
 240
 241 /*
 242  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 243  */
 244 static int poodle_wm8731_init(struct snd_soc_pcm_runtime *rtd)
 245 {
 246         struct snd_soc_codec *codec = rtd->codec;
 247         int err;
 248
 249         snd_soc_dapm_nc_pin(codec, "LLINEIN");
 250         snd_soc_dapm_nc_pin(codec, "RLINEIN");
 251         snd_soc_dapm_enable_pin(codec, "MICIN");
 252
 253         /* Add poodle specific controls */
 254         err = snd_soc_add_controls(codec, wm8731_poodle_controls,
 255                                 ARRAY_SIZE(wm8731_poodle_controls));
 256         if (err < 0)
 257                 return err;
 258
 259         /* Add poodle specific widgets */
 260         snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
 261                                   ARRAY_SIZE(wm8731_dapm_widgets));
 262
 263         /* Set up poodle specific audio path audio_map */
 264         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 265
 266         snd_soc_dapm_sync(codec);
 267         return 0;
 268 }
 269
 270 /* poodle digital audio interface glue - connects codec <--> CPU */
 271 static struct snd_soc_dai_link poodle_dai = {
 272         .name = "WM8731",
 273         .stream_name = "WM8731",
 274         .cpu_dai_name = "pxa2xx-i2s",
 275         .codec_dai_name = "wm8731-hifi",
 276         .platform_name = "pxa-pcm-audio",
 277         .codec_name = "wm8731-codec.0-001a",
 278         .init = poodle_wm8731_init,
 279         .ops = &poodle_ops,
 280 };
 281
 282 /* poodle audio machine driver */
 283 static struct snd_soc_card snd_soc_poodle = {
 284         .name = "Poodle",
 285         .dai_link = &poodle_dai,
 286         .num_links = 1,
 287         .owner = THIS_MODULE,
 288 };
 289
 290 static struct platform_device *poodle_snd_device;
 291
 292 static int __init poodle_init(void)
 293 {
 294         int ret;
 295
 296         if (!machine_is_poodle())
 297                 return -ENODEV;
 298
 299         locomo_gpio_set_dir(&poodle_locomo_device.dev,
 300                 POODLE_LOCOMO_GPIO_AMP_ON, 0);
 301         /* should we mute HP at startup - burning power ?*/
 302         locomo_gpio_set_dir(&poodle_locomo_device.dev,
 303                 POODLE_LOCOMO_GPIO_MUTE_L, 0);
 304         locomo_gpio_set_dir(&poodle_locomo_device.dev,
 305                 POODLE_LOCOMO_GPIO_MUTE_R, 0);
 306
 307         poodle_snd_device = platform_device_alloc("soc-audio", -1);
 308         if (!poodle_snd_device)
 309                 return -ENOMEM;
 310
 311         platform_set_drvdata(poodle_snd_device, &snd_soc_poodle);
 312         ret = platform_device_add(poodle_snd_device);
 313
 314         if (ret)
 315                 platform_device_put(poodle_snd_device);
 316
 317         return ret;
 318 }
 319
 320 static void __exit poodle_exit(void)
 321 {
 322         platform_device_unregister(poodle_snd_device);
 323 }
 324
 325 module_init(poodle_init);
 326 module_exit(poodle_exit);
 327
 328 /* Module information */
 329 MODULE_AUTHOR("Richard Purdie");
 330 MODULE_DESCRIPTION("ALSA SoC Poodle");
 331 MODULE_LICENSE("GPL");