sound/soc/pxa/corgi.c

   1 /*
   2  * corgi.c  --  SoC audio for Corgi
   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  *  Revision history
  16  *    30th Nov 2005   Initial version.
  17  *
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/moduleparam.h>
  22 #include <linux/timer.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/platform_device.h>
  25 #include <sound/core.h>
  26 #include <sound/pcm.h>
  27 #include <sound/soc.h>
  28 #include <sound/soc-dapm.h>
  29
  30 #include <asm/mach-types.h>
  31 #include <asm/hardware/scoop.h>
  32 #include <asm/arch/pxa-regs.h>
  33 #include <asm/arch/hardware.h>
  34 #include <asm/arch/corgi.h>
  35 #include <asm/arch/audio.h>
  36
  37 #include "../codecs/wm8731.h"
  38 #include "pxa2xx-pcm.h"
  39 #include "pxa2xx-i2s.h"
  40
  41 #define CORGI_HP        0
  42 #define CORGI_MIC       1
  43 #define CORGI_LINE      2
  44 #define CORGI_HEADSET   3
  45 #define CORGI_HP_OFF    4
  46 #define CORGI_SPK_ON    0
  47 #define CORGI_SPK_OFF   1
  48
  49  /* audio clock in Hz - rounded from 12.235MHz */
  50 #define CORGI_AUDIO_CLOCK 12288000
  51
  52 static int corgi_jack_func;
  53 static int corgi_spk_func;
  54
  55 static void corgi_ext_control(struct snd_soc_codec *codec)
  56 {
  57         int spk = 0, mic = 0, line = 0, hp = 0, hs = 0;
  58
  59         /* set up jack connection */
  60         switch (corgi_jack_func) {
  61         case CORGI_HP:
  62                 hp = 1;
  63                 /* set = unmute headphone */
  64                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  65                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  66                 break;
  67         case CORGI_MIC:
  68                 mic = 1;
  69                 /* reset = mute headphone */
  70                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  71                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  72                 break;
  73         case CORGI_LINE:
  74                 line = 1;
  75                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  76                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  77                 break;
  78         case CORGI_HEADSET:
  79                 hs = 1;
  80                 mic = 1;
  81                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
  82                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
  83                 break;
  84         }
  85
  86         if (corgi_spk_func == CORGI_SPK_ON)
  87                 spk = 1;
  88
  89         /* set the enpoints to their new connetion states */
  90         snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
  91         snd_soc_dapm_set_endpoint(codec, "Mic Jack", mic);
  92         snd_soc_dapm_set_endpoint(codec, "Line Jack", line);
  93         snd_soc_dapm_set_endpoint(codec, "Headphone Jack", hp);
  94         snd_soc_dapm_set_endpoint(codec, "Headset Jack", hs);
  95
  96         /* signal a DAPM event */
  97         snd_soc_dapm_sync_endpoints(codec);
  98 }
  99
 100 static int corgi_startup(struct snd_pcm_substream *substream)
 101 {
 102         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 103         struct snd_soc_codec *codec = rtd->socdev->codec;
 104
 105         /* check the jack status at stream startup */
 106         corgi_ext_control(codec);
 107         return 0;
 108 }
 109
 110 /* we need to unmute the HP at shutdown as the mute burns power on corgi */
 111 static int corgi_shutdown(struct snd_pcm_substream *substream)
 112 {
 113         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 114         struct snd_soc_codec *codec = rtd->socdev->codec;
 115
 116         /* set = unmute headphone */
 117         set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_L);
 118         set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MUTE_R);
 119         return 0;
 120 }
 121
 122 static int corgi_hw_params(struct snd_pcm_substream *substream,
 123         struct snd_pcm_hw_params *params)
 124 {
 125         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 126         struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
 127         struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
 128         unsigned int clk = 0;
 129         int ret = 0;
 130
 131         switch (params_rate(params)) {
 132         case 8000:
 133         case 16000:
 134         case 48000:
 135         case 96000:
 136                 clk = 12288000;
 137                 break;
 138         case 11025:
 139         case 22050:
 140         case 44100:
 141                 clk = 11289600;
 142                 break;
 143         }
 144
 145         /* set codec DAI configuration */
 146         ret = codec_dai->dai_ops.set_fmt(codec_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 cpu DAI configuration */
 152         ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 153                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 154         if (ret < 0)
 155                 return ret;
 156
 157         /* set the codec system clock for DAC and ADC */
 158         ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_SYSCLK, clk,
 159                 SND_SOC_CLOCK_IN);
 160         if (ret < 0)
 161                 return ret;
 162
 163         /* set the I2S system clock as input (unused) */
 164         ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 165                 SND_SOC_CLOCK_IN);
 166         if (ret < 0)
 167                 return ret;
 168
 169         return 0;
 170 }
 171
 172 static struct snd_soc_ops corgi_ops = {
 173         .startup = corgi_startup,
 174         .hw_params = corgi_hw_params,
 175         .shutdown = corgi_shutdown,
 176 };
 177
 178 static int corgi_get_jack(struct snd_kcontrol *kcontrol,
 179         struct snd_ctl_elem_value *ucontrol)
 180 {
 181         ucontrol->value.integer.value[0] = corgi_jack_func;
 182         return 0;
 183 }
 184
 185 static int corgi_set_jack(struct snd_kcontrol *kcontrol,
 186         struct snd_ctl_elem_value *ucontrol)
 187 {
 188         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 189
 190         if (corgi_jack_func == ucontrol->value.integer.value[0])
 191                 return 0;
 192
 193         corgi_jack_func = ucontrol->value.integer.value[0];
 194         corgi_ext_control(codec);
 195         return 1;
 196 }
 197
 198 static int corgi_get_spk(struct snd_kcontrol *kcontrol,
 199         struct snd_ctl_elem_value *ucontrol)
 200 {
 201         ucontrol->value.integer.value[0] = corgi_spk_func;
 202         return 0;
 203 }
 204
 205 static int corgi_set_spk(struct snd_kcontrol *kcontrol,
 206         struct snd_ctl_elem_value *ucontrol)
 207 {
 208         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 209
 210         if (corgi_spk_func == ucontrol->value.integer.value[0])
 211                 return 0;
 212
 213         corgi_spk_func = ucontrol->value.integer.value[0];
 214         corgi_ext_control(codec);
 215         return 1;
 216 }
 217
 218 static int corgi_amp_event(struct snd_soc_dapm_widget *w,
 219         struct snd_kcontrol *k, int event)
 220 {
 221         if (SND_SOC_DAPM_EVENT_ON(event))
 222                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
 223         else
 224                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_APM_ON);
 225
 226         return 0;
 227 }
 228
 229 static int corgi_mic_event(struct snd_soc_dapm_widget *w,
 230         struct snd_kcontrol *k, int event)
 231 {
 232         if (SND_SOC_DAPM_EVENT_ON(event))
 233                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
 234         else
 235                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_MIC_BIAS);
 236
 237         return 0;
 238 }
 239
 240 /* corgi machine dapm widgets */
 241 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
 242 SND_SOC_DAPM_HP("Headphone Jack", NULL),
 243 SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
 244 SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
 245 SND_SOC_DAPM_LINE("Line Jack", NULL),
 246 SND_SOC_DAPM_HP("Headset Jack", NULL),
 247 };
 248
 249 /* Corgi machine audio map (connections to the codec pins) */
 250 static const char *audio_map[][3] = {
 251
 252         /* headset Jack  - in = micin, out = LHPOUT*/
 253         {"Headset Jack", NULL, "LHPOUT"},
 254
 255         /* headphone connected to LHPOUT1, RHPOUT1 */
 256         {"Headphone Jack", NULL, "LHPOUT"},
 257         {"Headphone Jack", NULL, "RHPOUT"},
 258
 259         /* speaker connected to LOUT, ROUT */
 260         {"Ext Spk", NULL, "ROUT"},
 261         {"Ext Spk", NULL, "LOUT"},
 262
 263         /* mic is connected to MICIN (via right channel of headphone jack) */
 264         {"MICIN", NULL, "Mic Jack"},
 265
 266         /* Same as the above but no mic bias for line signals */
 267         {"MICIN", NULL, "Line Jack"},
 268
 269         {NULL, NULL, NULL},
 270 };
 271
 272 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 273         "Off"};
 274 static const char *spk_function[] = {"On", "Off"};
 275 static const struct soc_enum corgi_enum[] = {
 276         SOC_ENUM_SINGLE_EXT(5, jack_function),
 277         SOC_ENUM_SINGLE_EXT(2, spk_function),
 278 };
 279
 280 static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
 281         SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
 282                 corgi_set_jack),
 283         SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
 284                 corgi_set_spk),
 285 };
 286
 287 /*
 288  * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
 289  */
 290 static int corgi_wm8731_init(struct snd_soc_codec *codec)
 291 {
 292         int i, err;
 293
 294         snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
 295         snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
 296
 297         /* Add corgi specific controls */
 298         for (i = 0; i < ARRAY_SIZE(wm8731_corgi_controls); i++) {
 299                 err = snd_ctl_add(codec->card,
 300                         snd_soc_cnew(&wm8731_corgi_controls[i],codec, NULL));
 301                 if (err < 0)
 302                         return err;
 303         }
 304
 305         /* Add corgi specific widgets */
 306         for(i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
 307                 snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
 308         }
 309
 310         /* Set up corgi specific audio path audio_map */
 311         for(i = 0; audio_map[i][0] != NULL; i++) {
 312                 snd_soc_dapm_connect_input(codec, audio_map[i][0],
 313                         audio_map[i][1], audio_map[i][2]);
 314         }
 315
 316         snd_soc_dapm_sync_endpoints(codec);
 317         return 0;
 318 }
 319
 320 /* corgi digital audio interface glue - connects codec <--> CPU */
 321 static struct snd_soc_dai_link corgi_dai = {
 322         .name = "WM8731",
 323         .stream_name = "WM8731",
 324         .cpu_dai = &pxa_i2s_dai,
 325         .codec_dai = &wm8731_dai,
 326         .init = corgi_wm8731_init,
 327         .ops = &corgi_ops,
 328 };
 329
 330 /* corgi audio machine driver */
 331 static struct snd_soc_machine snd_soc_machine_corgi = {
 332         .name = "Corgi",
 333         .dai_link = &corgi_dai,
 334         .num_links = 1,
 335 };
 336
 337 /* corgi audio private data */
 338 static struct wm8731_setup_data corgi_wm8731_setup = {
 339         .i2c_address = 0x1b,
 340 };
 341
 342 /* corgi audio subsystem */
 343 static struct snd_soc_device corgi_snd_devdata = {
 344         .machine = &snd_soc_machine_corgi,
 345         .platform = &pxa2xx_soc_platform,
 346         .codec_dev = &soc_codec_dev_wm8731,
 347         .codec_data = &corgi_wm8731_setup,
 348 };
 349
 350 static struct platform_device *corgi_snd_device;
 351
 352 static int __init corgi_init(void)
 353 {
 354         int ret;
 355
 356         if (!(machine_is_corgi() || machine_is_shepherd() || machine_is_husky()))
 357                 return -ENODEV;
 358
 359         corgi_snd_device = platform_device_alloc("soc-audio", -1);
 360         if (!corgi_snd_device)
 361                 return -ENOMEM;
 362
 363         platform_set_drvdata(corgi_snd_device, &corgi_snd_devdata);
 364         corgi_snd_devdata.dev = &corgi_snd_device->dev;
 365         ret = platform_device_add(corgi_snd_device);
 366
 367         if (ret)
 368                 platform_device_put(corgi_snd_device);
 369
 370         return ret;
 371 }
 372
 373 static void __exit corgi_exit(void)
 374 {
 375         platform_device_unregister(corgi_snd_device);
 376 }
 377
 378 module_init(corgi_init);
 379 module_exit(corgi_exit);
 380
 381 /* Module information */
 382 MODULE_AUTHOR("Richard Purdie");
 383 MODULE_DESCRIPTION("ALSA SoC Corgi");
 384 MODULE_LICENSE("GPL");