sound/soc/samsung/neo1973_wm8753.c

   1 /*
   2  * neo1973_wm8753.c  --  SoC audio for Openmoko Neo1973 and Freerunner devices
   3  *
   4  * Copyright 2007 Openmoko Inc
   5  * Author: Graeme Gregory <graeme@openmoko.org>
   6  * Copyright 2007 Wolfson Microelectronics PLC.
   7  * Author: Graeme Gregory
   8  *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
   9  * Copyright 2009 Wolfson Microelectronics
  10  *
  11  *  This program is free software; you can redistribute  it and/or modify it
  12  *  under  the terms of  the GNU General  Public License as published by the
  13  *  Free Software Foundation;  either version 2 of the  License, or (at your
  14  *  option) any later version.
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/gpio.h>
  20
  21 #include <sound/soc.h>
  22
  23 #include <asm/mach-types.h>
  24 #include <plat/regs-iis.h>
  25 #include <mach/gta02.h>
  26
  27 #include "../codecs/wm8753.h"
  28 #include "s3c24xx-i2s.h"
  29
  30 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
  31         struct snd_pcm_hw_params *params)
  32 {
  33         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  34         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  35         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  36         unsigned int pll_out = 0, bclk = 0;
  37         int ret = 0;
  38         unsigned long iis_clkrate;
  39
  40         iis_clkrate = s3c24xx_i2s_get_clockrate();
  41
  42         switch (params_rate(params)) {
  43         case 8000:
  44         case 16000:
  45                 pll_out = 12288000;
  46                 break;
  47         case 48000:
  48                 bclk = WM8753_BCLK_DIV_4;
  49                 pll_out = 12288000;
  50                 break;
  51         case 96000:
  52                 bclk = WM8753_BCLK_DIV_2;
  53                 pll_out = 12288000;
  54                 break;
  55         case 11025:
  56                 bclk = WM8753_BCLK_DIV_16;
  57                 pll_out = 11289600;
  58                 break;
  59         case 22050:
  60                 bclk = WM8753_BCLK_DIV_8;
  61                 pll_out = 11289600;
  62                 break;
  63         case 44100:
  64                 bclk = WM8753_BCLK_DIV_4;
  65                 pll_out = 11289600;
  66                 break;
  67         case 88200:
  68                 bclk = WM8753_BCLK_DIV_2;
  69                 pll_out = 11289600;
  70                 break;
  71         }
  72
  73         /* set codec DAI configuration */
  74         ret = snd_soc_dai_set_fmt(codec_dai,
  75                 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  76                 SND_SOC_DAIFMT_CBM_CFM);
  77         if (ret < 0)
  78                 return ret;
  79
  80         /* set cpu DAI configuration */
  81         ret = snd_soc_dai_set_fmt(cpu_dai,
  82                 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  83                 SND_SOC_DAIFMT_CBM_CFM);
  84         if (ret < 0)
  85                 return ret;
  86
  87         /* set the codec system clock for DAC and ADC */
  88         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
  89                 SND_SOC_CLOCK_IN);
  90         if (ret < 0)
  91                 return ret;
  92
  93         /* set MCLK division for sample rate */
  94         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
  95                 S3C2410_IISMOD_32FS);
  96         if (ret < 0)
  97                 return ret;
  98
  99         /* set codec BCLK division for sample rate */
 100         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
 101         if (ret < 0)
 102                 return ret;
 103
 104         /* set prescaler division for sample rate */
 105         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 106                 S3C24XX_PRESCALE(4, 4));
 107         if (ret < 0)
 108                 return ret;
 109
 110         /* codec PLL input is PCLK/4 */
 111         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
 112                 iis_clkrate / 4, pll_out);
 113         if (ret < 0)
 114                 return ret;
 115
 116         return 0;
 117 }
 118
 119 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
 120 {
 121         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 122         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 123
 124         /* disable the PLL */
 125         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
 126 }
 127
 128 /*
 129  * Neo1973 WM8753 HiFi DAI opserations.
 130  */
 131 static struct snd_soc_ops neo1973_hifi_ops = {
 132         .hw_params = neo1973_hifi_hw_params,
 133         .hw_free = neo1973_hifi_hw_free,
 134 };
 135
 136 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
 137         struct snd_pcm_hw_params *params)
 138 {
 139         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 140         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 141         unsigned int pcmdiv = 0;
 142         int ret = 0;
 143         unsigned long iis_clkrate;
 144
 145         iis_clkrate = s3c24xx_i2s_get_clockrate();
 146
 147         if (params_rate(params) != 8000)
 148                 return -EINVAL;
 149         if (params_channels(params) != 1)
 150                 return -EINVAL;
 151
 152         pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
 153
 154         /* todo: gg check mode (DSP_B) against CSR datasheet */
 155         /* set codec DAI configuration */
 156         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
 157                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 158         if (ret < 0)
 159                 return ret;
 160
 161         /* set the codec system clock for DAC and ADC */
 162         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
 163                 SND_SOC_CLOCK_IN);
 164         if (ret < 0)
 165                 return ret;
 166
 167         /* set codec PCM division for sample rate */
 168         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
 169         if (ret < 0)
 170                 return ret;
 171
 172         /* configure and enable PLL for 12.288MHz output */
 173         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
 174                 iis_clkrate / 4, 12288000);
 175         if (ret < 0)
 176                 return ret;
 177
 178         return 0;
 179 }
 180
 181 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
 182 {
 183         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 184         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 185
 186         /* disable the PLL */
 187         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
 188 }
 189
 190 static struct snd_soc_ops neo1973_voice_ops = {
 191         .hw_params = neo1973_voice_hw_params,
 192         .hw_free = neo1973_voice_hw_free,
 193 };
 194
 195 /* Shared routes and controls */
 196
 197 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
 198         SND_SOC_DAPM_LINE("GSM Line Out", NULL),
 199         SND_SOC_DAPM_LINE("GSM Line In", NULL),
 200         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 201         SND_SOC_DAPM_MIC("Handset Mic", NULL),
 202 };
 203
 204 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
 205         /* Connections to the GSM Module */
 206         {"GSM Line Out", NULL, "MONO1"},
 207         {"GSM Line Out", NULL, "MONO2"},
 208         {"RXP", NULL, "GSM Line In"},
 209         {"RXN", NULL, "GSM Line In"},
 210
 211         /* Connections to Headset */
 212         {"MIC1", NULL, "Mic Bias"},
 213         {"Mic Bias", NULL, "Headset Mic"},
 214
 215         /* Call Mic */
 216         {"MIC2", NULL, "Mic Bias"},
 217         {"MIC2N", NULL, "Mic Bias"},
 218         {"Mic Bias", NULL, "Handset Mic"},
 219
 220         /* Connect the ALC pins */
 221         {"ACIN", NULL, "ACOP"},
 222 };
 223
 224 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
 225         SOC_DAPM_PIN_SWITCH("GSM Line Out"),
 226         SOC_DAPM_PIN_SWITCH("GSM Line In"),
 227         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 228         SOC_DAPM_PIN_SWITCH("Handset Mic"),
 229 };
 230
 231 /* GTA02 specific routes and controls */
 232
 233 #ifdef CONFIG_MACH_NEO1973_GTA02
 234
 235 static int gta02_speaker_enabled;
 236
 237 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
 238         struct snd_ctl_elem_value *ucontrol)
 239 {
 240         gta02_speaker_enabled = ucontrol->value.integer.value[0];
 241
 242         gpio_set_value(GTA02_GPIO_HP_IN, !gta02_speaker_enabled);
 243
 244         return 0;
 245 }
 246
 247 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
 248         struct snd_ctl_elem_value *ucontrol)
 249 {
 250         ucontrol->value.integer.value[0] = gta02_speaker_enabled;
 251         return 0;
 252 }
 253
 254 static int lm4853_event(struct snd_soc_dapm_widget *w,
 255                         struct snd_kcontrol *k, int event)
 256 {
 257         gpio_set_value(GTA02_GPIO_AMP_SHUT, SND_SOC_DAPM_EVENT_OFF(event));
 258
 259         return 0;
 260 }
 261
 262 static const struct snd_soc_dapm_route neo1973_gta02_routes[] = {
 263         /* Connections to the amp */
 264         {"Stereo Out", NULL, "LOUT1"},
 265         {"Stereo Out", NULL, "ROUT1"},
 266
 267         /* Call Speaker */
 268         {"Handset Spk", NULL, "LOUT2"},
 269         {"Handset Spk", NULL, "ROUT2"},
 270 };
 271
 272 static const struct snd_kcontrol_new neo1973_gta02_wm8753_controls[] = {
 273         SOC_DAPM_PIN_SWITCH("Handset Spk"),
 274         SOC_DAPM_PIN_SWITCH("Stereo Out"),
 275
 276         SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
 277                 lm4853_get_spk,
 278                 lm4853_set_spk),
 279 };
 280
 281 static const struct snd_soc_dapm_widget neo1973_gta02_wm8753_dapm_widgets[] = {
 282         SND_SOC_DAPM_SPK("Handset Spk", NULL),
 283         SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
 284 };
 285
 286 static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec)
 287 {
 288         struct snd_soc_dapm_context *dapm = &codec->dapm;
 289         int ret;
 290
 291         ret = snd_soc_dapm_new_controls(dapm, neo1973_gta02_wm8753_dapm_widgets,
 292                         ARRAY_SIZE(neo1973_gta02_wm8753_dapm_widgets));
 293         if (ret)
 294                 return ret;
 295
 296         ret = snd_soc_dapm_add_routes(dapm, neo1973_gta02_routes,
 297                         ARRAY_SIZE(neo1973_gta02_routes));
 298         if (ret)
 299                 return ret;
 300
 301         ret = snd_soc_add_controls(codec, neo1973_gta02_wm8753_controls,
 302                         ARRAY_SIZE(neo1973_gta02_wm8753_controls));
 303         if (ret)
 304                 return ret;
 305
 306         snd_soc_dapm_disable_pin(dapm, "Stereo Out");
 307         snd_soc_dapm_disable_pin(dapm, "Handset Spk");
 308         snd_soc_dapm_ignore_suspend(dapm, "Stereo Out");
 309         snd_soc_dapm_ignore_suspend(dapm, "Handset Spk");
 310
 311         return 0;
 312 }
 313
 314 #else
 315 static int neo1973_gta02_wm8753_init(struct snd_soc_code *codec) { return 0; }
 316 #endif
 317
 318 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
 319 {
 320         struct snd_soc_codec *codec = rtd->codec;
 321         struct snd_soc_dapm_context *dapm = &codec->dapm;
 322         int ret;
 323
 324         /* set up NC codec pins */
 325         if (machine_is_neo1973_gta01()) {
 326                 snd_soc_dapm_nc_pin(dapm, "LOUT2");
 327                 snd_soc_dapm_nc_pin(dapm, "ROUT2");
 328         }
 329         snd_soc_dapm_nc_pin(dapm, "OUT3");
 330         snd_soc_dapm_nc_pin(dapm, "OUT4");
 331         snd_soc_dapm_nc_pin(dapm, "LINE1");
 332         snd_soc_dapm_nc_pin(dapm, "LINE2");
 333
 334         /* Add neo1973 specific widgets */
 335         ret = snd_soc_dapm_new_controls(dapm, neo1973_wm8753_dapm_widgets,
 336                         ARRAY_SIZE(neo1973_wm8753_dapm_widgets));
 337         if (ret)
 338                 return ret;
 339
 340         /* add neo1973 specific controls */
 341         ret = snd_soc_add_controls(codec, neo1973_wm8753_controls,
 342                         ARRAY_SIZE(neo1973_wm8753_controls));
 343         if (ret)
 344                 return ret;
 345
 346         /* set up neo1973 specific audio routes */
 347         ret = snd_soc_dapm_add_routes(dapm, neo1973_wm8753_routes,
 348                         ARRAY_SIZE(neo1973_wm8753_routes));
 349         if (ret)
 350                 return ret;
 351
 352         /* set endpoints to default off mode */
 353         snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 354         snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 355         snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 356         snd_soc_dapm_disable_pin(dapm, "Handset Mic");
 357
 358         /* allow audio paths from the GSM modem to run during suspend */
 359         snd_soc_dapm_ignore_suspend(dapm, "GSM Line Out");
 360         snd_soc_dapm_ignore_suspend(dapm, "GSM Line In");
 361         snd_soc_dapm_ignore_suspend(dapm, "Headset Mic");
 362         snd_soc_dapm_ignore_suspend(dapm, "Handset Mic");
 363
 364         if (machine_is_neo1973_gta02()) {
 365                 ret = neo1973_gta02_wm8753_init(codec);
 366                 if (ret)
 367                         return ret;
 368         }
 369
 370         snd_soc_dapm_sync(dapm);
 371
 372         return 0;
 373 }
 374
 375 /* GTA01 specific controls */
 376
 377 #ifdef CONFIG_MACH_NEO1973_GTA01
 378
 379 static const struct snd_soc_dapm_route neo1973_lm4857_routes[] = {
 380         {"Amp IN", NULL, "ROUT1"},
 381         {"Amp IN", NULL, "LOUT1"},
 382
 383         {"Handset Spk", NULL, "Amp EP"},
 384         {"Stereo Out", NULL, "Amp LS"},
 385         {"Headphone", NULL, "Amp HP"},
 386 };
 387
 388 static const struct snd_soc_dapm_widget neo1973_lm4857_dapm_widgets[] = {
 389         SND_SOC_DAPM_SPK("Handset Spk", NULL),
 390         SND_SOC_DAPM_SPK("Stereo Out", NULL),
 391         SND_SOC_DAPM_HP("Headphone", NULL),
 392 };
 393
 394 static int neo1973_lm4857_init(struct snd_soc_dapm_context *dapm)
 395 {
 396         int ret;
 397
 398         ret = snd_soc_dapm_new_controls(dapm, neo1973_lm4857_dapm_widgets,
 399                         ARRAY_SIZE(neo1973_lm4857_dapm_widgets));
 400         if (ret)
 401                 return ret;
 402
 403         ret = snd_soc_dapm_add_routes(dapm, neo1973_lm4857_routes,
 404                         ARRAY_SIZE(neo1973_lm4857_routes));
 405         if (ret)
 406                 return ret;
 407
 408         snd_soc_dapm_ignore_suspend(dapm, "Stereo Out");
 409         snd_soc_dapm_ignore_suspend(dapm, "Handset Spk");
 410         snd_soc_dapm_ignore_suspend(dapm, "Headphone");
 411
 412         snd_soc_dapm_sync(dapm);
 413
 414         return 0;
 415 }
 416
 417 #else
 418 static int neo1973_lm4857_init(struct snd_soc_dapm_context *dapm) { return 0; };
 419 #endif
 420
 421 static struct snd_soc_dai_link neo1973_dai[] = {
 422 { /* Hifi Playback - for similatious use with voice below */
 423         .name = "WM8753",
 424         .stream_name = "WM8753 HiFi",
 425         .platform_name = "samsung-audio",
 426         .cpu_dai_name = "s3c24xx-iis",
 427         .codec_dai_name = "wm8753-hifi",
 428         .codec_name = "wm8753-codec.0-001a",
 429         .init = neo1973_wm8753_init,
 430         .ops = &neo1973_hifi_ops,
 431 },
 432 { /* Voice via BT */
 433         .name = "Bluetooth",
 434         .stream_name = "Voice",
 435         .cpu_dai_name = "dfbmcs320-pcm",
 436         .codec_dai_name = "wm8753-voice",
 437         .codec_name = "wm8753-codec.0-001a",
 438         .ops = &neo1973_voice_ops,
 439 },
 440 };
 441
 442 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
 443         {
 444                 .name = "dfbmcs320",
 445                 .codec_name = "dfbmcs320.0",
 446         },
 447         {
 448                 .name = "lm4857",
 449                 .codec_name = "lm4857.0-007c",
 450                 .init = neo1973_lm4857_init,
 451         },
 452 };
 453
 454 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
 455         {
 456                 .dev_name = "lm4857.0-007c",
 457                 .name_prefix = "Amp",
 458         },
 459 };
 460
 461 #ifdef CONFIG_MACH_NEO1973_GTA02
 462 static const struct gpio neo1973_gta02_gpios[] = {
 463         { GTA02_GPIO_HP_IN, GPIOF_OUT_INIT_HIGH, "GTA02_HP_IN" },
 464         { GTA02_GPIO_AMP_SHUT, GPIOF_OUT_INIT_HIGH, "GTA02_AMP_SHUT" },
 465 };
 466 #else
 467 static const struct gpio neo1973_gta02_gpios[] = {};
 468 #endif
 469
 470 static struct snd_soc_card neo1973 = {
 471         .name = "neo1973",
 472         .dai_link = neo1973_dai,
 473         .num_links = ARRAY_SIZE(neo1973_dai),
 474         .aux_dev = neo1973_aux_devs,
 475         .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
 476         .codec_conf = neo1973_codec_conf,
 477         .num_configs = ARRAY_SIZE(neo1973_codec_conf),
 478 };
 479
 480 static struct platform_device *neo1973_snd_device;
 481
 482 static int __init neo1973_init(void)
 483 {
 484         int ret;
 485
 486         if (!machine_is_neo1973_gta01() && !machine_is_neo1973_gta02())
 487                 return -ENODEV;
 488
 489         if (machine_is_neo1973_gta02()) {
 490                 neo1973.name = "neo1973gta02";
 491                 neo1973.num_aux_devs = 1;
 492
 493                 ret = gpio_request_array(neo1973_gta02_gpios,
 494                                 ARRAY_SIZE(neo1973_gta02_gpios));
 495                 if (ret)
 496                         return ret;
 497         }
 498
 499         neo1973_snd_device = platform_device_alloc("soc-audio", -1);
 500         if (!neo1973_snd_device) {
 501                 ret = -ENOMEM;
 502                 goto err_gpio_free;
 503         }
 504
 505         platform_set_drvdata(neo1973_snd_device, &neo1973);
 506         ret = platform_device_add(neo1973_snd_device);
 507
 508         if (ret)
 509                 goto err_put_device;
 510
 511         return 0;
 512
 513 err_put_device:
 514         platform_device_put(neo1973_snd_device);
 515 err_gpio_free:
 516         if (machine_is_neo1973_gta02()) {
 517                 gpio_free_array(neo1973_gta02_gpios,
 518                                 ARRAY_SIZE(neo1973_gta02_gpios));
 519         }
 520         return ret;
 521 }
 522 module_init(neo1973_init);
 523
 524 static void __exit neo1973_exit(void)
 525 {
 526         platform_device_unregister(neo1973_snd_device);
 527
 528         if (machine_is_neo1973_gta02()) {
 529                 gpio_free_array(neo1973_gta02_gpios,
 530                                 ARRAY_SIZE(neo1973_gta02_gpios));
 531         }
 532 }
 533 module_exit(neo1973_exit);
 534
 535 /* Module information */
 536 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
 537 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
 538 MODULE_LICENSE("GPL");