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 <asm/arch/pxa-regs.h>
  30 #include <asm/arch/hardware.h>
  31 #include <asm/arch/poodle.h>
  32 #include <asm/arch/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         int spk = 0;
  52
  53         /* set up jack connection */
  54         if (poodle_jack_func == POODLE_HP) {
  55                 /* set = unmute headphone */
  56                 locomo_gpio_write(&poodle_locomo_device.dev,
  57                         POODLE_LOCOMO_GPIO_MUTE_L, 1);
  58                 locomo_gpio_write(&poodle_locomo_device.dev,
  59                         POODLE_LOCOMO_GPIO_MUTE_R, 1);
  60                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
  61         } else {
  62                 locomo_gpio_write(&poodle_locomo_device.dev,
  63                         POODLE_LOCOMO_GPIO_MUTE_L, 0);
  64                 locomo_gpio_write(&poodle_locomo_device.dev,
  65                         POODLE_LOCOMO_GPIO_MUTE_R, 0);
  66                 snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
  67         }
  68
  69         if (poodle_spk_func == POODLE_SPK_ON)
  70                 spk = 1;
  71
  72         /* set the enpoints to their new connetion states */
  73         snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
  74
  75         /* signal a DAPM event */
  76         snd_soc_dapm_sync_endpoints(codec);
  77 }
  78
  79 static int poodle_startup(struct snd_pcm_substream *substream)
  80 {
  81         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  82         struct snd_soc_codec *codec = rtd->socdev->codec;
  83
  84         /* check the jack status at stream startup */
  85         poodle_ext_control(codec);
  86         return 0;
  87 }
  88
  89 /* we need to unmute the HP at shutdown as the mute burns power on poodle */
  90 static int poodle_shutdown(struct snd_pcm_substream *substream)
  91 {
  92         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  93         struct snd_soc_codec *codec = rtd->socdev->codec;
  94
  95         /* set = unmute headphone */
  96         locomo_gpio_write(&poodle_locomo_device.dev,
  97                 POODLE_LOCOMO_GPIO_MUTE_L, 1);
  98         locomo_gpio_write(&poodle_locomo_device.dev,
  99                 POODLE_LOCOMO_GPIO_MUTE_R, 1);
 100         return 0;
 101 }
 102
 103 static int poodle_hw_params(struct snd_pcm_substream *substream,
 104         struct snd_pcm_hw_params *params)
 105 {
 106         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 107         struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
 108         struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
 109         unsigned int clk = 0;
 110         int ret = 0;
 111
 112         switch (params_rate(params)) {
 113         case 8000:
 114         case 16000:
 115         case 48000:
 116         case 96000:
 117                 clk = 12288000;
 118                 break;
 119         case 11025:
 120         case 22050:
 121         case 44100:
 122                 clk = 11289600;
 123                 break;
 124         }
 125
 126         /* set codec DAI configuration */
 127         ret = codec_dai->dai_ops.set_fmt(codec_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 cpu DAI configuration */
 133         ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 134                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 135         if (ret < 0)
 136                 return ret;
 137
 138         /* set the codec system clock for DAC and ADC */
 139         ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_SYSCLK, clk,
 140                 SND_SOC_CLOCK_IN);
 141         if (ret < 0)
 142                 return ret;
 143
 144         /* set the I2S system clock as input (unused) */
 145         ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 146                 SND_SOC_CLOCK_IN);
 147         if (ret < 0)
 148                 return ret;
 149
 150         return 0;
 151 }
 152
 153 static struct snd_soc_ops poodle_ops = {
 154         .startup = poodle_startup,
 155         .hw_params = poodle_hw_params,
 156         .shutdown = poodle_shutdown,
 157 };
 158
 159 static int poodle_get_jack(struct snd_kcontrol *kcontrol,
 160         struct snd_ctl_elem_value *ucontrol)
 161 {
 162         ucontrol->value.integer.value[0] = poodle_jack_func;
 163         return 0;
 164 }
 165
 166 static int poodle_set_jack(struct snd_kcontrol *kcontrol,
 167         struct snd_ctl_elem_value *ucontrol)
 168 {
 169         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 170
 171         if (poodle_jack_func == ucontrol->value.integer.value[0])
 172                 return 0;
 173
 174         poodle_jack_func = ucontrol->value.integer.value[0];
 175         poodle_ext_control(codec);
 176         return 1;
 177 }
 178
 179 static int poodle_get_spk(struct snd_kcontrol *kcontrol,
 180         struct snd_ctl_elem_value *ucontrol)
 181 {
 182         ucontrol->value.integer.value[0] = poodle_spk_func;
 183         return 0;
 184 }
 185
 186 static int poodle_set_spk(struct snd_kcontrol *kcontrol,
 187         struct snd_ctl_elem_value *ucontrol)
 188 {
 189         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 190
 191         if (poodle_spk_func == ucontrol->value.integer.value[0])
 192                 return 0;
 193
 194         poodle_spk_func = ucontrol->value.integer.value[0];
 195         poodle_ext_control(codec);
 196         return 1;
 197 }
 198
 199 static int poodle_amp_event(struct snd_soc_dapm_widget *w,
 200         struct snd_kcontrol *k, int event)
 201 {
 202         if (SND_SOC_DAPM_EVENT_ON(event))
 203                 locomo_gpio_write(&poodle_locomo_device.dev,
 204                         POODLE_LOCOMO_GPIO_AMP_ON, 0);
 205         else
 206                 locomo_gpio_write(&poodle_locomo_device.dev,
 207                         POODLE_LOCOMO_GPIO_AMP_ON, 1);
 208
 209         return 0;
 210 }
 211
 212 /* poodle machine dapm widgets */
 213 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 214 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 215 SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
 216 };
 217
 218 /* Corgi machine audio_mapnections to the codec pins */
 219 static const char *audio_map[][3] = {
 220
 221         /* headphone connected to LHPOUT1, RHPOUT1 */
 222         {"Headphone Jack", NULL, "LHPOUT"},
 223         {"Headphone Jack", NULL, "RHPOUT"},
 224
 225         /* speaker connected to LOUT, ROUT */
 226         {"Ext Spk", NULL, "ROUT"},
 227         {"Ext Spk", NULL, "LOUT"},
 228
 229         {NULL, NULL, NULL},
 230 };
 231
 232 static const char *jack_function[] = {"Off", "Headphone"};
 233 static const char *spk_function[] = {"Off", "On"};
 234 static const struct soc_enum poodle_enum[] = {
 235         SOC_ENUM_SINGLE_EXT(2, jack_function),
 236         SOC_ENUM_SINGLE_EXT(2, spk_function),
 237 };
 238
 239 static const snd_kcontrol_new_t wm8731_poodle_controls[] = {
 240         SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
 241                 poodle_set_jack),
 242         SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
 243                 poodle_set_spk),
 244 };
 245
 246 /*
 247  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 248  */
 249 static int poodle_wm8731_init(struct snd_soc_codec *codec)
 250 {
 251         int i, err;
 252
 253         snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
 254         snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
 255         snd_soc_dapm_set_endpoint(codec, "MICIN", 1);
 256
 257         /* Add poodle specific controls */
 258         for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) {
 259                 err = snd_ctl_add(codec->card,
 260                         snd_soc_cnew(&wm8731_poodle_controls[i],codec, NULL));
 261                 if (err < 0)
 262                         return err;
 263         }
 264
 265         /* Add poodle specific widgets */
 266         for (i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
 267                 snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
 268         }
 269
 270         /* Set up poodle specific audio path audio_map */
 271         for (i = 0; audio_map[i][0] != NULL; i++) {
 272                 snd_soc_dapm_connect_input(codec, audio_map[i][0],
 273                         audio_map[i][1], audio_map[i][2]);
 274         }
 275
 276         snd_soc_dapm_sync_endpoints(codec);
 277         return 0;
 278 }
 279
 280 /* poodle digital audio interface glue - connects codec <--> CPU */
 281 static struct snd_soc_dai_link poodle_dai = {
 282         .name = "WM8731",
 283         .stream_name = "WM8731",
 284         .cpu_dai = &pxa_i2s_dai,
 285         .codec_dai = &wm8731_dai,
 286         .init = poodle_wm8731_init,
 287         .ops = &poodle_ops,
 288 };
 289
 290 /* poodle audio machine driver */
 291 static struct snd_soc_machine snd_soc_machine_poodle = {
 292         .name = "Poodle",
 293         .dai_link = &poodle_dai,
 294         .num_links = 1,
 295 };
 296
 297 /* poodle audio private data */
 298 static struct wm8731_setup_data poodle_wm8731_setup = {
 299         .i2c_address = 0x1b,
 300 };
 301
 302 /* poodle audio subsystem */
 303 static struct snd_soc_device poodle_snd_devdata = {
 304         .machine = &snd_soc_machine_poodle,
 305         .platform = &pxa2xx_soc_platform,
 306         .codec_dev = &soc_codec_dev_wm8731,
 307         .codec_data = &poodle_wm8731_setup,
 308 };
 309
 310 static struct platform_device *poodle_snd_device;
 311
 312 static int __init poodle_init(void)
 313 {
 314         int ret;
 315
 316         if (!machine_is_poodle())
 317                 return -ENODEV;
 318
 319         locomo_gpio_set_dir(&poodle_locomo_device.dev,
 320                 POODLE_LOCOMO_GPIO_AMP_ON, 0);
 321         /* should we mute HP at startup - burning power ?*/
 322         locomo_gpio_set_dir(&poodle_locomo_device.dev,
 323                 POODLE_LOCOMO_GPIO_MUTE_L, 0);
 324         locomo_gpio_set_dir(&poodle_locomo_device.dev,
 325                 POODLE_LOCOMO_GPIO_MUTE_R, 0);
 326
 327         poodle_snd_device = platform_device_alloc("soc-audio", -1);
 328         if (!poodle_snd_device)
 329                 return -ENOMEM;
 330
 331         platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
 332         poodle_snd_devdata.dev = &poodle_snd_device->dev;
 333         ret = platform_device_add(poodle_snd_device);
 334
 335         if (ret)
 336                 platform_device_put(poodle_snd_device);
 337
 338         return ret;
 339 }
 340
 341 static void __exit poodle_exit(void)
 342 {
 343         platform_device_unregister(poodle_snd_device);
 344 }
 345
 346 module_init(poodle_init);
 347 module_exit(poodle_exit);
 348
 349 /* Module information */
 350 MODULE_AUTHOR("Richard Purdie");
 351 MODULE_DESCRIPTION("ALSA SoC Poodle");
 352 MODULE_LICENSE("GPL");