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 "regs-iis.h"
  25
  26 #include "../codecs/wm8753.h"
  27 #include "s3c24xx-i2s.h"
  28
  29 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
  30         struct snd_pcm_hw_params *params)
  31 {
  32         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  33         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  34         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  35         unsigned int pll_out = 0, bclk = 0;
  36         int ret = 0;
  37         unsigned long iis_clkrate;
  38
  39         iis_clkrate = s3c24xx_i2s_get_clockrate();
  40
  41         switch (params_rate(params)) {
  42         case 8000:
  43         case 16000:
  44                 pll_out = 12288000;
  45                 break;
  46         case 48000:
  47                 bclk = WM8753_BCLK_DIV_4;
  48                 pll_out = 12288000;
  49                 break;
  50         case 96000:
  51                 bclk = WM8753_BCLK_DIV_2;
  52                 pll_out = 12288000;
  53                 break;
  54         case 11025:
  55                 bclk = WM8753_BCLK_DIV_16;
  56                 pll_out = 11289600;
  57                 break;
  58         case 22050:
  59                 bclk = WM8753_BCLK_DIV_8;
  60                 pll_out = 11289600;
  61                 break;
  62         case 44100:
  63                 bclk = WM8753_BCLK_DIV_4;
  64                 pll_out = 11289600;
  65                 break;
  66         case 88200:
  67                 bclk = WM8753_BCLK_DIV_2;
  68                 pll_out = 11289600;
  69                 break;
  70         }
  71
  72         /* set codec DAI configuration */
  73         ret = snd_soc_dai_set_fmt(codec_dai,
  74                 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  75                 SND_SOC_DAIFMT_CBM_CFM);
  76         if (ret < 0)
  77                 return ret;
  78
  79         /* set cpu DAI configuration */
  80         ret = snd_soc_dai_set_fmt(cpu_dai,
  81                 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  82                 SND_SOC_DAIFMT_CBM_CFM);
  83         if (ret < 0)
  84                 return ret;
  85
  86         /* set the codec system clock for DAC and ADC */
  87         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
  88                 SND_SOC_CLOCK_IN);
  89         if (ret < 0)
  90                 return ret;
  91
  92         /* set MCLK division for sample rate */
  93         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
  94                 S3C2410_IISMOD_32FS);
  95         if (ret < 0)
  96                 return ret;
  97
  98         /* set codec BCLK division for sample rate */
  99         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
 100         if (ret < 0)
 101                 return ret;
 102
 103         /* set prescaler division for sample rate */
 104         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 105                 S3C24XX_PRESCALE(4, 4));
 106         if (ret < 0)
 107                 return ret;
 108
 109         /* codec PLL input is PCLK/4 */
 110         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
 111                 iis_clkrate / 4, pll_out);
 112         if (ret < 0)
 113                 return ret;
 114
 115         return 0;
 116 }
 117
 118 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
 119 {
 120         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 121         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 122
 123         /* disable the PLL */
 124         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
 125 }
 126
 127 /*
 128  * Neo1973 WM8753 HiFi DAI opserations.
 129  */
 130 static struct snd_soc_ops neo1973_hifi_ops = {
 131         .hw_params = neo1973_hifi_hw_params,
 132         .hw_free = neo1973_hifi_hw_free,
 133 };
 134
 135 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
 136         struct snd_pcm_hw_params *params)
 137 {
 138         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 139         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 140         unsigned int pcmdiv = 0;
 141         int ret = 0;
 142         unsigned long iis_clkrate;
 143
 144         iis_clkrate = s3c24xx_i2s_get_clockrate();
 145
 146         if (params_rate(params) != 8000)
 147                 return -EINVAL;
 148         if (params_channels(params) != 1)
 149                 return -EINVAL;
 150
 151         pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
 152
 153         /* todo: gg check mode (DSP_B) against CSR datasheet */
 154         /* set codec DAI configuration */
 155         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
 156                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 157         if (ret < 0)
 158                 return ret;
 159
 160         /* set the codec system clock for DAC and ADC */
 161         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
 162                 SND_SOC_CLOCK_IN);
 163         if (ret < 0)
 164                 return ret;
 165
 166         /* set codec PCM division for sample rate */
 167         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
 168         if (ret < 0)
 169                 return ret;
 170
 171         /* configure and enable PLL for 12.288MHz output */
 172         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
 173                 iis_clkrate / 4, 12288000);
 174         if (ret < 0)
 175                 return ret;
 176
 177         return 0;
 178 }
 179
 180 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
 181 {
 182         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 183         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 184
 185         /* disable the PLL */
 186         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
 187 }
 188
 189 static struct snd_soc_ops neo1973_voice_ops = {
 190         .hw_params = neo1973_voice_hw_params,
 191         .hw_free = neo1973_voice_hw_free,
 192 };
 193
 194 /* Shared routes and controls */
 195
 196 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
 197         SND_SOC_DAPM_LINE("GSM Line Out", NULL),
 198         SND_SOC_DAPM_LINE("GSM Line In", NULL),
 199         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 200         SND_SOC_DAPM_MIC("Handset Mic", NULL),
 201 };
 202
 203 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
 204         /* Connections to the GSM Module */
 205         {"GSM Line Out", NULL, "MONO1"},
 206         {"GSM Line Out", NULL, "MONO2"},
 207         {"RXP", NULL, "GSM Line In"},
 208         {"RXN", NULL, "GSM Line In"},
 209
 210         /* Connections to Headset */
 211         {"MIC1", NULL, "Mic Bias"},
 212         {"Mic Bias", NULL, "Headset Mic"},
 213
 214         /* Call Mic */
 215         {"MIC2", NULL, "Mic Bias"},
 216         {"MIC2N", NULL, "Mic Bias"},
 217         {"Mic Bias", NULL, "Handset Mic"},
 218
 219         /* Connect the ALC pins */
 220         {"ACIN", NULL, "ACOP"},
 221 };
 222
 223 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
 224         SOC_DAPM_PIN_SWITCH("GSM Line Out"),
 225         SOC_DAPM_PIN_SWITCH("GSM Line In"),
 226         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 227         SOC_DAPM_PIN_SWITCH("Handset Mic"),
 228 };
 229
 230 /* GTA02 specific routes and controls */
 231
 232 static int gta02_speaker_enabled;
 233
 234 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
 235         struct snd_ctl_elem_value *ucontrol)
 236 {
 237         gta02_speaker_enabled = ucontrol->value.integer.value[0];
 238
 239         gpio_set_value(S3C2410_GPJ(2), !gta02_speaker_enabled);
 240
 241         return 0;
 242 }
 243
 244 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
 245         struct snd_ctl_elem_value *ucontrol)
 246 {
 247         ucontrol->value.integer.value[0] = gta02_speaker_enabled;
 248         return 0;
 249 }
 250
 251 static int lm4853_event(struct snd_soc_dapm_widget *w,
 252                         struct snd_kcontrol *k, int event)
 253 {
 254         gpio_set_value(S3C2410_GPJ(1), SND_SOC_DAPM_EVENT_OFF(event));
 255
 256         return 0;
 257 }
 258
 259 static const struct snd_soc_dapm_route neo1973_gta02_routes[] = {
 260         /* Connections to the amp */
 261         {"Stereo Out", NULL, "LOUT1"},
 262         {"Stereo Out", NULL, "ROUT1"},
 263
 264         /* Call Speaker */
 265         {"Handset Spk", NULL, "LOUT2"},
 266         {"Handset Spk", NULL, "ROUT2"},
 267 };
 268
 269 static const struct snd_kcontrol_new neo1973_gta02_wm8753_controls[] = {
 270         SOC_DAPM_PIN_SWITCH("Handset Spk"),
 271         SOC_DAPM_PIN_SWITCH("Stereo Out"),
 272
 273         SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
 274                 lm4853_get_spk,
 275                 lm4853_set_spk),
 276 };
 277
 278 static const struct snd_soc_dapm_widget neo1973_gta02_wm8753_dapm_widgets[] = {
 279         SND_SOC_DAPM_SPK("Handset Spk", NULL),
 280         SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
 281 };
 282
 283 static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec)
 284 {
 285         struct snd_soc_dapm_context *dapm = &codec->dapm;
 286         int ret;
 287
 288         ret = snd_soc_dapm_new_controls(dapm, neo1973_gta02_wm8753_dapm_widgets,
 289                         ARRAY_SIZE(neo1973_gta02_wm8753_dapm_widgets));
 290         if (ret)
 291                 return ret;
 292
 293         ret = snd_soc_dapm_add_routes(dapm, neo1973_gta02_routes,
 294                         ARRAY_SIZE(neo1973_gta02_routes));
 295         if (ret)
 296                 return ret;
 297
 298         ret = snd_soc_add_card_controls(codec->card, neo1973_gta02_wm8753_controls,
 299                         ARRAY_SIZE(neo1973_gta02_wm8753_controls));
 300         if (ret)
 301                 return ret;
 302
 303         snd_soc_dapm_disable_pin(dapm, "Stereo Out");
 304         snd_soc_dapm_disable_pin(dapm, "Handset Spk");
 305         snd_soc_dapm_ignore_suspend(dapm, "Stereo Out");
 306         snd_soc_dapm_ignore_suspend(dapm, "Handset Spk");
 307
 308         return 0;
 309 }
 310
 311 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
 312 {
 313         struct snd_soc_codec *codec = rtd->codec;
 314         struct snd_soc_dapm_context *dapm = &codec->dapm;
 315         int ret;
 316
 317         /* set up NC codec pins */
 318         snd_soc_dapm_nc_pin(dapm, "OUT3");
 319         snd_soc_dapm_nc_pin(dapm, "OUT4");
 320         snd_soc_dapm_nc_pin(dapm, "LINE1");
 321         snd_soc_dapm_nc_pin(dapm, "LINE2");
 322
 323         /* Add neo1973 specific widgets */
 324         ret = snd_soc_dapm_new_controls(dapm, neo1973_wm8753_dapm_widgets,
 325                         ARRAY_SIZE(neo1973_wm8753_dapm_widgets));
 326         if (ret)
 327                 return ret;
 328
 329         /* add neo1973 specific controls */
 330         ret = snd_soc_add_card_controls(rtd->card, neo1973_wm8753_controls,
 331                         ARRAY_SIZE(neo1973_wm8753_controls));
 332         if (ret)
 333                 return ret;
 334
 335         /* set up neo1973 specific audio routes */
 336         ret = snd_soc_dapm_add_routes(dapm, neo1973_wm8753_routes,
 337                         ARRAY_SIZE(neo1973_wm8753_routes));
 338         if (ret)
 339                 return ret;
 340
 341         /* set endpoints to default off mode */
 342         snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
 343         snd_soc_dapm_disable_pin(dapm, "GSM Line In");
 344         snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 345         snd_soc_dapm_disable_pin(dapm, "Handset Mic");
 346
 347         /* allow audio paths from the GSM modem to run during suspend */
 348         snd_soc_dapm_ignore_suspend(dapm, "GSM Line Out");
 349         snd_soc_dapm_ignore_suspend(dapm, "GSM Line In");
 350         snd_soc_dapm_ignore_suspend(dapm, "Headset Mic");
 351         snd_soc_dapm_ignore_suspend(dapm, "Handset Mic");
 352
 353         if (machine_is_neo1973_gta02()) {
 354                 ret = neo1973_gta02_wm8753_init(codec);
 355                 if (ret)
 356                         return ret;
 357         }
 358
 359         return 0;
 360 }
 361
 362 static struct snd_soc_dai_link neo1973_dai[] = {
 363 { /* Hifi Playback - for similatious use with voice below */
 364         .name = "WM8753",
 365         .stream_name = "WM8753 HiFi",
 366         .platform_name = "s3c24xx-iis",
 367         .cpu_dai_name = "s3c24xx-iis",
 368         .codec_dai_name = "wm8753-hifi",
 369         .codec_name = "wm8753.0-001a",
 370         .init = neo1973_wm8753_init,
 371         .ops = &neo1973_hifi_ops,
 372 },
 373 { /* Voice via BT */
 374         .name = "Bluetooth",
 375         .stream_name = "Voice",
 376         .cpu_dai_name = "bt-sco-pcm",
 377         .codec_dai_name = "wm8753-voice",
 378         .codec_name = "wm8753.0-001a",
 379         .ops = &neo1973_voice_ops,
 380 },
 381 };
 382
 383 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
 384         {
 385                 .name = "dfbmcs320",
 386                 .codec_name = "dfbmcs320.0",
 387         },
 388 };
 389
 390 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
 391         {
 392                 .dev_name = "lm4857.0-007c",
 393                 .name_prefix = "Amp",
 394         },
 395 };
 396
 397 static const struct gpio neo1973_gta02_gpios[] = {
 398         { S3C2410_GPJ(2), GPIOF_OUT_INIT_HIGH, "GTA02_HP_IN" },
 399         { S3C2410_GPJ(1), GPIOF_OUT_INIT_HIGH, "GTA02_AMP_SHUT" },
 400 };
 401
 402 static struct snd_soc_card neo1973 = {
 403         .name = "neo1973",
 404         .owner = THIS_MODULE,
 405         .dai_link = neo1973_dai,
 406         .num_links = ARRAY_SIZE(neo1973_dai),
 407         .aux_dev = neo1973_aux_devs,
 408         .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
 409         .codec_conf = neo1973_codec_conf,
 410         .num_configs = ARRAY_SIZE(neo1973_codec_conf),
 411 };
 412
 413 static struct platform_device *neo1973_snd_device;
 414
 415 static int __init neo1973_init(void)
 416 {
 417         int ret;
 418
 419         if (!machine_is_neo1973_gta02())
 420                 return -ENODEV;
 421
 422         if (machine_is_neo1973_gta02()) {
 423                 neo1973.name = "neo1973gta02";
 424                 neo1973.num_aux_devs = 1;
 425
 426                 ret = gpio_request_array(neo1973_gta02_gpios,
 427                                 ARRAY_SIZE(neo1973_gta02_gpios));
 428                 if (ret)
 429                         return ret;
 430         }
 431
 432         neo1973_snd_device = platform_device_alloc("soc-audio", -1);
 433         if (!neo1973_snd_device) {
 434                 ret = -ENOMEM;
 435                 goto err_gpio_free;
 436         }
 437
 438         platform_set_drvdata(neo1973_snd_device, &neo1973);
 439         ret = platform_device_add(neo1973_snd_device);
 440
 441         if (ret)
 442                 goto err_put_device;
 443
 444         return 0;
 445
 446 err_put_device:
 447         platform_device_put(neo1973_snd_device);
 448 err_gpio_free:
 449         if (machine_is_neo1973_gta02()) {
 450                 gpio_free_array(neo1973_gta02_gpios,
 451                                 ARRAY_SIZE(neo1973_gta02_gpios));
 452         }
 453         return ret;
 454 }
 455 module_init(neo1973_init);
 456
 457 static void __exit neo1973_exit(void)
 458 {
 459         platform_device_unregister(neo1973_snd_device);
 460
 461         if (machine_is_neo1973_gta02()) {
 462                 gpio_free_array(neo1973_gta02_gpios,
 463                                 ARRAY_SIZE(neo1973_gta02_gpios));
 464         }
 465 }
 466 module_exit(neo1973_exit);
 467
 468 /* Module information */
 469 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
 470 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
 471 MODULE_LICENSE("GPL");