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 <mach/gpio-samsung.h>
  24 #include <asm/mach-types.h>
  25 #include "regs-iis.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 static int gta02_speaker_enabled;
 196
 197 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
 198         struct snd_ctl_elem_value *ucontrol)
 199 {
 200         gta02_speaker_enabled = ucontrol->value.integer.value[0];
 201
 202         gpio_set_value(S3C2410_GPJ(2), !gta02_speaker_enabled);
 203
 204         return 0;
 205 }
 206
 207 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
 208         struct snd_ctl_elem_value *ucontrol)
 209 {
 210         ucontrol->value.integer.value[0] = gta02_speaker_enabled;
 211         return 0;
 212 }
 213
 214 static int lm4853_event(struct snd_soc_dapm_widget *w,
 215                         struct snd_kcontrol *k, int event)
 216 {
 217         gpio_set_value(S3C2410_GPJ(1), SND_SOC_DAPM_EVENT_OFF(event));
 218
 219         return 0;
 220 }
 221
 222 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
 223         SND_SOC_DAPM_LINE("GSM Line Out", NULL),
 224         SND_SOC_DAPM_LINE("GSM Line In", NULL),
 225         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 226         SND_SOC_DAPM_MIC("Handset Mic", NULL),
 227         SND_SOC_DAPM_SPK("Handset Spk", NULL),
 228         SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
 229 };
 230
 231 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
 232         /* Connections to the GSM Module */
 233         {"GSM Line Out", NULL, "MONO1"},
 234         {"GSM Line Out", NULL, "MONO2"},
 235         {"RXP", NULL, "GSM Line In"},
 236         {"RXN", NULL, "GSM Line In"},
 237
 238         /* Connections to Headset */
 239         {"MIC1", NULL, "Mic Bias"},
 240         {"Mic Bias", NULL, "Headset Mic"},
 241
 242         /* Call Mic */
 243         {"MIC2", NULL, "Mic Bias"},
 244         {"MIC2N", NULL, "Mic Bias"},
 245         {"Mic Bias", NULL, "Handset Mic"},
 246
 247         /* Connect the ALC pins */
 248         {"ACIN", NULL, "ACOP"},
 249
 250         /* Connections to the amp */
 251         {"Stereo Out", NULL, "LOUT1"},
 252         {"Stereo Out", NULL, "ROUT1"},
 253
 254         /* Call Speaker */
 255         {"Handset Spk", NULL, "LOUT2"},
 256         {"Handset Spk", NULL, "ROUT2"},
 257 };
 258
 259 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
 260         SOC_DAPM_PIN_SWITCH("GSM Line Out"),
 261         SOC_DAPM_PIN_SWITCH("GSM Line In"),
 262         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 263         SOC_DAPM_PIN_SWITCH("Handset Mic"),
 264         SOC_DAPM_PIN_SWITCH("Handset Spk"),
 265         SOC_DAPM_PIN_SWITCH("Stereo Out"),
 266
 267         SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
 268                 lm4853_get_spk,
 269                 lm4853_set_spk),
 270 };
 271
 272 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
 273 {
 274         struct snd_soc_card *card = rtd->card;
 275
 276         /* set endpoints to default off mode */
 277         snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out");
 278         snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In");
 279         snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic");
 280         snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic");
 281         snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out");
 282         snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk");
 283
 284         /* allow audio paths from the GSM modem to run during suspend */
 285         snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out");
 286         snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In");
 287         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
 288         snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic");
 289         snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out");
 290         snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk");
 291
 292         return 0;
 293 }
 294
 295 static struct snd_soc_dai_link neo1973_dai[] = {
 296 { /* Hifi Playback - for similatious use with voice below */
 297         .name = "WM8753",
 298         .stream_name = "WM8753 HiFi",
 299         .platform_name = "s3c24xx-iis",
 300         .cpu_dai_name = "s3c24xx-iis",
 301         .codec_dai_name = "wm8753-hifi",
 302         .codec_name = "wm8753.0-001a",
 303         .init = neo1973_wm8753_init,
 304         .ops = &neo1973_hifi_ops,
 305 },
 306 { /* Voice via BT */
 307         .name = "Bluetooth",
 308         .stream_name = "Voice",
 309         .cpu_dai_name = "bt-sco-pcm",
 310         .codec_dai_name = "wm8753-voice",
 311         .codec_name = "wm8753.0-001a",
 312         .ops = &neo1973_voice_ops,
 313 },
 314 };
 315
 316 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
 317         {
 318                 .name = "dfbmcs320",
 319                 .codec_name = "dfbmcs320.0",
 320         },
 321 };
 322
 323 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
 324         {
 325                 .dev_name = "lm4857.0-007c",
 326                 .name_prefix = "Amp",
 327         },
 328 };
 329
 330 static const struct gpio neo1973_gta02_gpios[] = {
 331         { S3C2410_GPJ(2), GPIOF_OUT_INIT_HIGH, "GTA02_HP_IN" },
 332         { S3C2410_GPJ(1), GPIOF_OUT_INIT_HIGH, "GTA02_AMP_SHUT" },
 333 };
 334
 335 static struct snd_soc_card neo1973 = {
 336         .name = "neo1973",
 337         .owner = THIS_MODULE,
 338         .dai_link = neo1973_dai,
 339         .num_links = ARRAY_SIZE(neo1973_dai),
 340         .aux_dev = neo1973_aux_devs,
 341         .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
 342         .codec_conf = neo1973_codec_conf,
 343         .num_configs = ARRAY_SIZE(neo1973_codec_conf),
 344
 345         .controls = neo1973_wm8753_controls,
 346         .num_controls = ARRAY_SIZE(neo1973_wm8753_controls),
 347         .dapm_widgets = neo1973_wm8753_dapm_widgets,
 348         .num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets),
 349         .dapm_routes = neo1973_wm8753_routes,
 350         .num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes),
 351         .fully_routed = true,
 352 };
 353
 354 static struct platform_device *neo1973_snd_device;
 355
 356 static int __init neo1973_init(void)
 357 {
 358         int ret;
 359
 360         if (!machine_is_neo1973_gta02())
 361                 return -ENODEV;
 362
 363         if (machine_is_neo1973_gta02()) {
 364                 neo1973.name = "neo1973gta02";
 365                 neo1973.num_aux_devs = 1;
 366
 367                 ret = gpio_request_array(neo1973_gta02_gpios,
 368                                 ARRAY_SIZE(neo1973_gta02_gpios));
 369                 if (ret)
 370                         return ret;
 371         }
 372
 373         neo1973_snd_device = platform_device_alloc("soc-audio", -1);
 374         if (!neo1973_snd_device) {
 375                 ret = -ENOMEM;
 376                 goto err_gpio_free;
 377         }
 378
 379         platform_set_drvdata(neo1973_snd_device, &neo1973);
 380         ret = platform_device_add(neo1973_snd_device);
 381
 382         if (ret)
 383                 goto err_put_device;
 384
 385         return 0;
 386
 387 err_put_device:
 388         platform_device_put(neo1973_snd_device);
 389 err_gpio_free:
 390         if (machine_is_neo1973_gta02()) {
 391                 gpio_free_array(neo1973_gta02_gpios,
 392                                 ARRAY_SIZE(neo1973_gta02_gpios));
 393         }
 394         return ret;
 395 }
 396 module_init(neo1973_init);
 397
 398 static void __exit neo1973_exit(void)
 399 {
 400         platform_device_unregister(neo1973_snd_device);
 401
 402         if (machine_is_neo1973_gta02()) {
 403                 gpio_free_array(neo1973_gta02_gpios,
 404                                 ARRAY_SIZE(neo1973_gta02_gpios));
 405         }
 406 }
 407 module_exit(neo1973_exit);
 408
 409 /* Module information */
 410 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
 411 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
 412 MODULE_LICENSE("GPL");