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 static int gta02_speaker_enabled;
 234
 235 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
 236         struct snd_ctl_elem_value *ucontrol)
 237 {
 238         gta02_speaker_enabled = ucontrol->value.integer.value[0];
 239
 240         gpio_set_value(GTA02_GPIO_HP_IN, !gta02_speaker_enabled);
 241
 242         return 0;
 243 }
 244
 245 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
 246         struct snd_ctl_elem_value *ucontrol)
 247 {
 248         ucontrol->value.integer.value[0] = gta02_speaker_enabled;
 249         return 0;
 250 }
 251
 252 static int lm4853_event(struct snd_soc_dapm_widget *w,
 253                         struct snd_kcontrol *k, int event)
 254 {
 255         gpio_set_value(GTA02_GPIO_AMP_SHUT, SND_SOC_DAPM_EVENT_OFF(event));
 256
 257         return 0;
 258 }
 259
 260 static const struct snd_soc_dapm_route neo1973_gta02_routes[] = {
 261         /* Connections to the amp */
 262         {"Stereo Out", NULL, "LOUT1"},
 263         {"Stereo Out", NULL, "ROUT1"},
 264
 265         /* Call Speaker */
 266         {"Handset Spk", NULL, "LOUT2"},
 267         {"Handset Spk", NULL, "ROUT2"},
 268 };
 269
 270 static const struct snd_kcontrol_new neo1973_gta02_wm8753_controls[] = {
 271         SOC_DAPM_PIN_SWITCH("Handset Spk"),
 272         SOC_DAPM_PIN_SWITCH("Stereo Out"),
 273
 274         SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
 275                 lm4853_get_spk,
 276                 lm4853_set_spk),
 277 };
 278
 279 static const struct snd_soc_dapm_widget neo1973_gta02_wm8753_dapm_widgets[] = {
 280         SND_SOC_DAPM_SPK("Handset Spk", NULL),
 281         SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
 282 };
 283
 284 static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec)
 285 {
 286         struct snd_soc_dapm_context *dapm = &codec->dapm;
 287         int ret;
 288
 289         ret = snd_soc_dapm_new_controls(dapm, neo1973_gta02_wm8753_dapm_widgets,
 290                         ARRAY_SIZE(neo1973_gta02_wm8753_dapm_widgets));
 291         if (ret)
 292                 return ret;
 293
 294         ret = snd_soc_dapm_add_routes(dapm, neo1973_gta02_routes,
 295                         ARRAY_SIZE(neo1973_gta02_routes));
 296         if (ret)
 297                 return ret;
 298
 299         ret = snd_soc_add_card_controls(codec->card, neo1973_gta02_wm8753_controls,
 300                         ARRAY_SIZE(neo1973_gta02_wm8753_controls));
 301         if (ret)
 302                 return ret;
 303
 304         snd_soc_dapm_disable_pin(dapm, "Stereo Out");
 305         snd_soc_dapm_disable_pin(dapm, "Handset Spk");
 306         snd_soc_dapm_ignore_suspend(dapm, "Stereo Out");
 307         snd_soc_dapm_ignore_suspend(dapm, "Handset Spk");
 308
 309         return 0;
 310 }
 311
 312 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
 313 {
 314         struct snd_soc_codec *codec = rtd->codec;
 315         struct snd_soc_dapm_context *dapm = &codec->dapm;
 316         int ret;
 317
 318         /* set up NC codec pins */
 319         snd_soc_dapm_nc_pin(dapm, "OUT3");
 320         snd_soc_dapm_nc_pin(dapm, "OUT4");
 321         snd_soc_dapm_nc_pin(dapm, "LINE1");
 322         snd_soc_dapm_nc_pin(dapm, "LINE2");
 323
 324         /* Add neo1973 specific widgets */
 325         ret = snd_soc_dapm_new_controls(dapm, neo1973_wm8753_dapm_widgets,
 326                         ARRAY_SIZE(neo1973_wm8753_dapm_widgets));
 327         if (ret)
 328                 return ret;
 329
 330         /* add neo1973 specific controls */
 331         ret = snd_soc_add_card_controls(rtd->card, neo1973_wm8753_controls,
 332                         ARRAY_SIZE(neo1973_wm8753_controls));
 333         if (ret)
 334                 return ret;
 335
 336         /* set up neo1973 specific audio routes */
 337         ret = snd_soc_dapm_add_routes(dapm, neo1973_wm8753_routes,
 338                         ARRAY_SIZE(neo1973_wm8753_routes));
 339         if (ret)
 340                 return ret;
 341
 342         /* set endpoints to default off mode */
 343         snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 344         snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 345         snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 346         snd_soc_dapm_disable_pin(dapm, "Handset Mic");
 347
 348         /* allow audio paths from the GSM modem to run during suspend */
 349         snd_soc_dapm_ignore_suspend(dapm, "GSM Line Out");
 350         snd_soc_dapm_ignore_suspend(dapm, "GSM Line In");
 351         snd_soc_dapm_ignore_suspend(dapm, "Headset Mic");
 352         snd_soc_dapm_ignore_suspend(dapm, "Handset Mic");
 353
 354         if (machine_is_neo1973_gta02()) {
 355                 ret = neo1973_gta02_wm8753_init(codec);
 356                 if (ret)
 357                         return ret;
 358         }
 359
 360         return 0;
 361 }
 362
 363 static struct snd_soc_dai_link neo1973_dai[] = {
 364 { /* Hifi Playback - for similatious use with voice below */
 365         .name = "WM8753",
 366         .stream_name = "WM8753 HiFi",
 367         .platform_name = "s3c24xx-iis",
 368         .cpu_dai_name = "s3c24xx-iis",
 369         .codec_dai_name = "wm8753-hifi",
 370         .codec_name = "wm8753.0-001a",
 371         .init = neo1973_wm8753_init,
 372         .ops = &neo1973_hifi_ops,
 373 },
 374 { /* Voice via BT */
 375         .name = "Bluetooth",
 376         .stream_name = "Voice",
 377         .cpu_dai_name = "dfbmcs320-pcm",
 378         .codec_dai_name = "wm8753-voice",
 379         .codec_name = "wm8753.0-001a",
 380         .ops = &neo1973_voice_ops,
 381 },
 382 };
 383
 384 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
 385         {
 386                 .name = "dfbmcs320",
 387                 .codec_name = "dfbmcs320.0",
 388         },
 389 };
 390
 391 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
 392         {
 393                 .dev_name = "lm4857.0-007c",
 394                 .name_prefix = "Amp",
 395         },
 396 };
 397
 398 static const struct gpio neo1973_gta02_gpios[] = {
 399         { GTA02_GPIO_HP_IN, GPIOF_OUT_INIT_HIGH, "GTA02_HP_IN" },
 400         { GTA02_GPIO_AMP_SHUT, GPIOF_OUT_INIT_HIGH, "GTA02_AMP_SHUT" },
 401 };
 402
 403 static struct snd_soc_card neo1973 = {
 404         .name = "neo1973",
 405         .owner = THIS_MODULE,
 406         .dai_link = neo1973_dai,
 407         .num_links = ARRAY_SIZE(neo1973_dai),
 408         .aux_dev = neo1973_aux_devs,
 409         .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
 410         .codec_conf = neo1973_codec_conf,
 411         .num_configs = ARRAY_SIZE(neo1973_codec_conf),
 412 };
 413
 414 static struct platform_device *neo1973_snd_device;
 415
 416 static int __init neo1973_init(void)
 417 {
 418         int ret;
 419
 420         if (!machine_is_neo1973_gta02())
 421                 return -ENODEV;
 422
 423         if (machine_is_neo1973_gta02()) {
 424                 neo1973.name = "neo1973gta02";
 425                 neo1973.num_aux_devs = 1;
 426
 427                 ret = gpio_request_array(neo1973_gta02_gpios,
 428                                 ARRAY_SIZE(neo1973_gta02_gpios));
 429                 if (ret)
 430                         return ret;
 431         }
 432
 433         neo1973_snd_device = platform_device_alloc("soc-audio", -1);
 434         if (!neo1973_snd_device) {
 435                 ret = -ENOMEM;
 436                 goto err_gpio_free;
 437         }
 438
 439         platform_set_drvdata(neo1973_snd_device, &neo1973);
 440         ret = platform_device_add(neo1973_snd_device);
 441
 442         if (ret)
 443                 goto err_put_device;
 444
 445         return 0;
 446
 447 err_put_device:
 448         platform_device_put(neo1973_snd_device);
 449 err_gpio_free:
 450         if (machine_is_neo1973_gta02()) {
 451                 gpio_free_array(neo1973_gta02_gpios,
 452                                 ARRAY_SIZE(neo1973_gta02_gpios));
 453         }
 454         return ret;
 455 }
 456 module_init(neo1973_init);
 457
 458 static void __exit neo1973_exit(void)
 459 {
 460         platform_device_unregister(neo1973_snd_device);
 461
 462         if (machine_is_neo1973_gta02()) {
 463                 gpio_free_array(neo1973_gta02_gpios,
 464                                 ARRAY_SIZE(neo1973_gta02_gpios));
 465         }
 466 }
 467 module_exit(neo1973_exit);
 468
 469 /* Module information */
 470 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
 471 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
 472 MODULE_LICENSE("GPL");