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 <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  */
  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 <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/soc.h>
  25 #include <sound/soc-dapm.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <asm/hardware/locomo.h>
  29 #include <mach/pxa-regs.h>
  30 #include <mach/hardware.h>
  31 #include <mach/poodle.h>
  32 #include <mach/audio.h>
  33
  34 #include "../codecs/wm8731.h"
  35 #include "pxa2xx-pcm.h"
  36 #include "pxa2xx-i2s.h"
  37
  38 #define POODLE_HP        1
  39 #define POODLE_HP_OFF    0
  40 #define POODLE_SPK_ON    1
  41 #define POODLE_SPK_OFF   0
  42
  43  /* audio clock in Hz - rounded from 12.235MHz */
  44 #define POODLE_AUDIO_CLOCK 12288000
  45
  46 static int poodle_jack_func;
  47 static int poodle_spk_func;
  48
  49 static void poodle_ext_control(struct snd_soc_codec *codec)
  50 {
  51         /* set up jack connection */
  52         if (poodle_jack_func == POODLE_HP) {
  53                 /* set = unmute headphone */
  54                 locomo_gpio_write(&poodle_locomo_device.dev,
  55                         POODLE_LOCOMO_GPIO_MUTE_L, 1);
  56                 locomo_gpio_write(&poodle_locomo_device.dev,
  57                         POODLE_LOCOMO_GPIO_MUTE_R, 1);
  58                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  59         } else {
  60                 locomo_gpio_write(&poodle_locomo_device.dev,
  61                         POODLE_LOCOMO_GPIO_MUTE_L, 0);
  62                 locomo_gpio_write(&poodle_locomo_device.dev,
  63                         POODLE_LOCOMO_GPIO_MUTE_R, 0);
  64                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  65         }
  66
  67         /* set the enpoints to their new connetion states */
  68         if (poodle_spk_func == POODLE_SPK_ON)
  69                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  70         else
  71                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  72
  73         /* signal a DAPM event */
  74         snd_soc_dapm_sync(codec);
  75 }
  76
  77 static int poodle_startup(struct snd_pcm_substream *substream)
  78 {
  79         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  80         struct snd_soc_codec *codec = rtd->socdev->codec;
  81
  82         /* check the jack status at stream startup */
  83         poodle_ext_control(codec);
  84         return 0;
  85 }
  86
  87 /* we need to unmute the HP at shutdown as the mute burns power on poodle */
  88 static void poodle_shutdown(struct snd_pcm_substream *substream)
  89 {
  90         /* set = unmute headphone */
  91         locomo_gpio_write(&poodle_locomo_device.dev,
  92                 POODLE_LOCOMO_GPIO_MUTE_L, 1);
  93         locomo_gpio_write(&poodle_locomo_device.dev,
  94                 POODLE_LOCOMO_GPIO_MUTE_R, 1);
  95 }
  96
  97 static int poodle_hw_params(struct snd_pcm_substream *substream,
  98         struct snd_pcm_hw_params *params)
  99 {
 100         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 101         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 102         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 103         unsigned int clk = 0;
 104         int ret = 0;
 105
 106         switch (params_rate(params)) {
 107         case 8000:
 108         case 16000:
 109         case 48000:
 110         case 96000:
 111                 clk = 12288000;
 112                 break;
 113         case 11025:
 114         case 22050:
 115         case 44100:
 116                 clk = 11289600;
 117                 break;
 118         }
 119
 120         /* set codec DAI configuration */
 121         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 122                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 123         if (ret < 0)
 124                 return ret;
 125
 126         /* set cpu DAI configuration */
 127         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 128                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 129         if (ret < 0)
 130                 return ret;
 131
 132         /* set the codec system clock for DAC and ADC */
 133         ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, clk,
 134                 SND_SOC_CLOCK_IN);
 135         if (ret < 0)
 136                 return ret;
 137
 138         /* set the I2S system clock as input (unused) */
 139         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 140                 SND_SOC_CLOCK_IN);
 141         if (ret < 0)
 142                 return ret;
 143
 144         return 0;
 145 }
 146
 147 static struct snd_soc_ops poodle_ops = {
 148         .startup = poodle_startup,
 149         .hw_params = poodle_hw_params,
 150         .shutdown = poodle_shutdown,
 151 };
 152
 153 static int poodle_get_jack(struct snd_kcontrol *kcontrol,
 154         struct snd_ctl_elem_value *ucontrol)
 155 {
 156         ucontrol->value.integer.value[0] = poodle_jack_func;
 157         return 0;
 158 }
 159
 160 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
 161         struct snd_ctl_elem_value *ucontrol)
 162 {
 163         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 164
 165         if (poodle_jack_func == ucontrol->value.integer.value[0])
 166                 return 0;
 167
 168         poodle_jack_func = ucontrol->value.integer.value[0];
 169         poodle_ext_control(codec);
 170         return 1;
 171 }
 172
 173 static int poodle_get_spk(struct snd_kcontrol *kcontrol,
 174         struct snd_ctl_elem_value *ucontrol)
 175 {
 176         ucontrol->value.integer.value[0] = poodle_spk_func;
 177         return 0;
 178 }
 179
 180 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
 181         struct snd_ctl_elem_value *ucontrol)
 182 {
 183         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 184
 185         if (poodle_spk_func == ucontrol->value.integer.value[0])
 186                 return 0;
 187
 188         poodle_spk_func = ucontrol->value.integer.value[0];
 189         poodle_ext_control(codec);
 190         return 1;
 191 }
 192
 193 static int poodle_amp_event(struct snd_soc_dapm_widget *w,
 194         struct snd_kcontrol *k, int event)
 195 {
 196         if (SND_SOC_DAPM_EVENT_ON(event))
 197                 locomo_gpio_write(&poodle_locomo_device.dev,
 198                         POODLE_LOCOMO_GPIO_AMP_ON, 0);
 199         else
 200                 locomo_gpio_write(&poodle_locomo_device.dev,
 201                         POODLE_LOCOMO_GPIO_AMP_ON, 1);
 202
 203         return 0;
 204 }
 205
 206 /* poodle machine dapm widgets */
 207 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 208 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 209 SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
 210 };
 211
 212 /* Corgi machine connections to the codec pins */
 213 static const struct snd_soc_dapm_route audio_map[] = {
 214
 215         /* headphone connected to LHPOUT1, RHPOUT1 */
 216         {"Headphone Jack", NULL, "LHPOUT"},
 217         {"Headphone Jack", NULL, "RHPOUT"},
 218
 219         /* speaker connected to LOUT, ROUT */
 220         {"Ext Spk", NULL, "ROUT"},
 221         {"Ext Spk", NULL, "LOUT"},
 222 };
 223
 224 static const char *jack_function[] = {"Off", "Headphone"};
 225 static const char *spk_function[] = {"Off", "On"};
 226 static const struct soc_enum poodle_enum[] = {
 227         SOC_ENUM_SINGLE_EXT(2, jack_function),
 228         SOC_ENUM_SINGLE_EXT(2, spk_function),
 229 };
 230
 231 static const struct snd_kcontrol_new wm8731_poodle_controls[] = {
 232         SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
 233                 poodle_set_jack),
 234         SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
 235                 poodle_set_spk),
 236 };
 237
 238 /*
 239  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 240  */
 241 static int poodle_wm8731_init(struct snd_soc_codec *codec)
 242 {
 243         int i, err;
 244
 245         snd_soc_dapm_disable_pin(codec, "LLINEIN");
 246         snd_soc_dapm_disable_pin(codec, "RLINEIN");
 247         snd_soc_dapm_enable_pin(codec, "MICIN");
 248
 249         /* Add poodle specific controls */
 250         for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) {
 251                 err = snd_ctl_add(codec->card,
 252                         snd_soc_cnew(&wm8731_poodle_controls[i], codec, NULL));
 253                 if (err < 0)
 254                         return err;
 255         }
 256
 257         /* Add poodle specific widgets */
 258         snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets,
 259                                   ARRAY_SIZE(wm8731_dapm_widgets));
 260
 261         /* Set up poodle specific audio path audio_map */
 262         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 263
 264         snd_soc_dapm_sync(codec);
 265         return 0;
 266 }
 267
 268 /* poodle digital audio interface glue - connects codec <--> CPU */
 269 static struct snd_soc_dai_link poodle_dai = {
 270         .name = "WM8731",
 271         .stream_name = "WM8731",
 272         .cpu_dai = &pxa_i2s_dai,
 273         .codec_dai = &wm8731_dai,
 274         .init = poodle_wm8731_init,
 275         .ops = &poodle_ops,
 276 };
 277
 278 /* poodle audio machine driver */
 279 static struct snd_soc_machine snd_soc_machine_poodle = {
 280         .name = "Poodle",
 281         .dai_link = &poodle_dai,
 282         .num_links = 1,
 283 };
 284
 285 /* poodle audio private data */
 286 static struct wm8731_setup_data poodle_wm8731_setup = {
 287         .i2c_address = 0x1b,
 288 };
 289
 290 /* poodle audio subsystem */
 291 static struct snd_soc_device poodle_snd_devdata = {
 292         .machine = &snd_soc_machine_poodle,
 293         .platform = &pxa2xx_soc_platform,
 294         .codec_dev = &soc_codec_dev_wm8731,
 295         .codec_data = &poodle_wm8731_setup,
 296 };
 297
 298 static struct platform_device *poodle_snd_device;
 299
 300 static int __init poodle_init(void)
 301 {
 302         int ret;
 303
 304         if (!machine_is_poodle())
 305                 return -ENODEV;
 306
 307         locomo_gpio_set_dir(&poodle_locomo_device.dev,
 308                 POODLE_LOCOMO_GPIO_AMP_ON, 0);
 309         /* should we mute HP at startup - burning power ?*/
 310         locomo_gpio_set_dir(&poodle_locomo_device.dev,
 311                 POODLE_LOCOMO_GPIO_MUTE_L, 0);
 312         locomo_gpio_set_dir(&poodle_locomo_device.dev,
 313                 POODLE_LOCOMO_GPIO_MUTE_R, 0);
 314
 315         poodle_snd_device = platform_device_alloc("soc-audio", -1);
 316         if (!poodle_snd_device)
 317                 return -ENOMEM;
 318
 319         platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
 320         poodle_snd_devdata.dev = &poodle_snd_device->dev;
 321         ret = platform_device_add(poodle_snd_device);
 322
 323         if (ret)
 324                 platform_device_put(poodle_snd_device);
 325
 326         return ret;
 327 }
 328
 329 static void __exit poodle_exit(void)
 330 {
 331         platform_device_unregister(poodle_snd_device);
 332 }
 333
 334 module_init(poodle_init);
 335 module_exit(poodle_exit);
 336
 337 /* Module information */
 338 MODULE_AUTHOR("Richard Purdie");
 339 MODULE_DESCRIPTION("ALSA SoC Poodle");
 340 MODULE_LICENSE("GPL");