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 the codec system clock for DAC and ADC */
  74         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
  75                 SND_SOC_CLOCK_IN);
  76         if (ret < 0)
  77                 return ret;
  78
  79         /* set MCLK division for sample rate */
  80         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
  81                 S3C2410_IISMOD_32FS);
  82         if (ret < 0)
  83                 return ret;
  84
  85         /* set codec BCLK division for sample rate */
  86         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
  87         if (ret < 0)
  88                 return ret;
  89
  90         /* set prescaler division for sample rate */
  91         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
  92                 S3C24XX_PRESCALE(4, 4));
  93         if (ret < 0)
  94                 return ret;
  95
  96         /* codec PLL input is PCLK/4 */
  97         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
  98                 iis_clkrate / 4, pll_out);
  99         if (ret < 0)
 100                 return ret;
 101
 102         return 0;
 103 }
 104
 105 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
 106 {
 107         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 108         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 109
 110         /* disable the PLL */
 111         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
 112 }
 113
 114 /*
 115  * Neo1973 WM8753 HiFi DAI opserations.
 116  */
 117 static struct snd_soc_ops neo1973_hifi_ops = {
 118         .hw_params = neo1973_hifi_hw_params,
 119         .hw_free = neo1973_hifi_hw_free,
 120 };
 121
 122 static int neo1973_voice_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_dai *codec_dai = rtd->codec_dai;
 127         unsigned int pcmdiv = 0;
 128         int ret = 0;
 129         unsigned long iis_clkrate;
 130
 131         iis_clkrate = s3c24xx_i2s_get_clockrate();
 132
 133         if (params_rate(params) != 8000)
 134                 return -EINVAL;
 135         if (params_channels(params) != 1)
 136                 return -EINVAL;
 137
 138         pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
 139
 140         /* set the codec system clock for DAC and ADC */
 141         ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
 142                 SND_SOC_CLOCK_IN);
 143         if (ret < 0)
 144                 return ret;
 145
 146         /* set codec PCM division for sample rate */
 147         ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
 148         if (ret < 0)
 149                 return ret;
 150
 151         /* configure and enable PLL for 12.288MHz output */
 152         ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
 153                 iis_clkrate / 4, 12288000);
 154         if (ret < 0)
 155                 return ret;
 156
 157         return 0;
 158 }
 159
 160 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
 161 {
 162         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 163         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 164
 165         /* disable the PLL */
 166         return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
 167 }
 168
 169 static struct snd_soc_ops neo1973_voice_ops = {
 170         .hw_params = neo1973_voice_hw_params,
 171         .hw_free = neo1973_voice_hw_free,
 172 };
 173
 174 static int gta02_speaker_enabled;
 175
 176 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
 177         struct snd_ctl_elem_value *ucontrol)
 178 {
 179         gta02_speaker_enabled = ucontrol->value.integer.value[0];
 180
 181         gpio_set_value(S3C2410_GPJ(2), !gta02_speaker_enabled);
 182
 183         return 0;
 184 }
 185
 186 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
 187         struct snd_ctl_elem_value *ucontrol)
 188 {
 189         ucontrol->value.integer.value[0] = gta02_speaker_enabled;
 190         return 0;
 191 }
 192
 193 static int lm4853_event(struct snd_soc_dapm_widget *w,
 194                         struct snd_kcontrol *k, int event)
 195 {
 196         gpio_set_value(S3C2410_GPJ(1), SND_SOC_DAPM_EVENT_OFF(event));
 197
 198         return 0;
 199 }
 200
 201 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
 202         SND_SOC_DAPM_LINE("GSM Line Out", NULL),
 203         SND_SOC_DAPM_LINE("GSM Line In", NULL),
 204         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 205         SND_SOC_DAPM_MIC("Handset Mic", NULL),
 206         SND_SOC_DAPM_SPK("Handset Spk", NULL),
 207         SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
 208 };
 209
 210 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
 211         /* Connections to the GSM Module */
 212         {"GSM Line Out", NULL, "MONO1"},
 213         {"GSM Line Out", NULL, "MONO2"},
 214         {"RXP", NULL, "GSM Line In"},
 215         {"RXN", NULL, "GSM Line In"},
 216
 217         /* Connections to Headset */
 218         {"MIC1", NULL, "Mic Bias"},
 219         {"Mic Bias", NULL, "Headset Mic"},
 220
 221         /* Call Mic */
 222         {"MIC2", NULL, "Mic Bias"},
 223         {"MIC2N", NULL, "Mic Bias"},
 224         {"Mic Bias", NULL, "Handset Mic"},
 225
 226         /* Connect the ALC pins */
 227         {"ACIN", NULL, "ACOP"},
 228
 229         /* Connections to the amp */
 230         {"Stereo Out", NULL, "LOUT1"},
 231         {"Stereo Out", NULL, "ROUT1"},
 232
 233         /* Call Speaker */
 234         {"Handset Spk", NULL, "LOUT2"},
 235         {"Handset Spk", NULL, "ROUT2"},
 236 };
 237
 238 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
 239         SOC_DAPM_PIN_SWITCH("GSM Line Out"),
 240         SOC_DAPM_PIN_SWITCH("GSM Line In"),
 241         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 242         SOC_DAPM_PIN_SWITCH("Handset Mic"),
 243         SOC_DAPM_PIN_SWITCH("Handset Spk"),
 244         SOC_DAPM_PIN_SWITCH("Stereo Out"),
 245
 246         SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
 247                 lm4853_get_spk,
 248                 lm4853_set_spk),
 249 };
 250
 251 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
 252 {
 253         struct snd_soc_card *card = rtd->card;
 254
 255         /* set endpoints to default off mode */
 256         snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out");
 257         snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In");
 258         snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic");
 259         snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic");
 260         snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out");
 261         snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk");
 262
 263         /* allow audio paths from the GSM modem to run during suspend */
 264         snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out");
 265         snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In");
 266         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
 267         snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic");
 268         snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out");
 269         snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk");
 270
 271         return 0;
 272 }
 273
 274 static struct snd_soc_dai_link neo1973_dai[] = {
 275 { /* Hifi Playback - for similatious use with voice below */
 276         .name = "WM8753",
 277         .stream_name = "WM8753 HiFi",
 278         .platform_name = "s3c24xx-iis",
 279         .cpu_dai_name = "s3c24xx-iis",
 280         .codec_dai_name = "wm8753-hifi",
 281         .codec_name = "wm8753.0-001a",
 282         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 283                    SND_SOC_DAIFMT_CBM_CFM,
 284         .init = neo1973_wm8753_init,
 285         .ops = &neo1973_hifi_ops,
 286 },
 287 { /* Voice via BT */
 288         .name = "Bluetooth",
 289         .stream_name = "Voice",
 290         .cpu_dai_name = "bt-sco-pcm",
 291         .codec_dai_name = "wm8753-voice",
 292         .codec_name = "wm8753.0-001a",
 293         .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
 294                    SND_SOC_DAIFMT_CBS_CFS,
 295         .ops = &neo1973_voice_ops,
 296 },
 297 };
 298
 299 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
 300         {
 301                 .name = "dfbmcs320",
 302                 .codec_name = "dfbmcs320.0",
 303         },
 304 };
 305
 306 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
 307         {
 308                 .dev_name = "lm4857.0-007c",
 309                 .name_prefix = "Amp",
 310         },
 311 };
 312
 313 static const struct gpio neo1973_gta02_gpios[] = {
 314         { S3C2410_GPJ(2), GPIOF_OUT_INIT_HIGH, "GTA02_HP_IN" },
 315         { S3C2410_GPJ(1), GPIOF_OUT_INIT_HIGH, "GTA02_AMP_SHUT" },
 316 };
 317
 318 static struct snd_soc_card neo1973 = {
 319         .name = "neo1973",
 320         .owner = THIS_MODULE,
 321         .dai_link = neo1973_dai,
 322         .num_links = ARRAY_SIZE(neo1973_dai),
 323         .aux_dev = neo1973_aux_devs,
 324         .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
 325         .codec_conf = neo1973_codec_conf,
 326         .num_configs = ARRAY_SIZE(neo1973_codec_conf),
 327
 328         .controls = neo1973_wm8753_controls,
 329         .num_controls = ARRAY_SIZE(neo1973_wm8753_controls),
 330         .dapm_widgets = neo1973_wm8753_dapm_widgets,
 331         .num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets),
 332         .dapm_routes = neo1973_wm8753_routes,
 333         .num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes),
 334         .fully_routed = true,
 335 };
 336
 337 static struct platform_device *neo1973_snd_device;
 338
 339 static int __init neo1973_init(void)
 340 {
 341         int ret;
 342
 343         if (!machine_is_neo1973_gta02())
 344                 return -ENODEV;
 345
 346         if (machine_is_neo1973_gta02()) {
 347                 neo1973.name = "neo1973gta02";
 348                 neo1973.num_aux_devs = 1;
 349
 350                 ret = gpio_request_array(neo1973_gta02_gpios,
 351                                 ARRAY_SIZE(neo1973_gta02_gpios));
 352                 if (ret)
 353                         return ret;
 354         }
 355
 356         neo1973_snd_device = platform_device_alloc("soc-audio", -1);
 357         if (!neo1973_snd_device) {
 358                 ret = -ENOMEM;
 359                 goto err_gpio_free;
 360         }
 361
 362         platform_set_drvdata(neo1973_snd_device, &neo1973);
 363         ret = platform_device_add(neo1973_snd_device);
 364
 365         if (ret)
 366                 goto err_put_device;
 367
 368         return 0;
 369
 370 err_put_device:
 371         platform_device_put(neo1973_snd_device);
 372 err_gpio_free:
 373         if (machine_is_neo1973_gta02()) {
 374                 gpio_free_array(neo1973_gta02_gpios,
 375                                 ARRAY_SIZE(neo1973_gta02_gpios));
 376         }
 377         return ret;
 378 }
 379 module_init(neo1973_init);
 380
 381 static void __exit neo1973_exit(void)
 382 {
 383         platform_device_unregister(neo1973_snd_device);
 384
 385         if (machine_is_neo1973_gta02()) {
 386                 gpio_free_array(neo1973_gta02_gpios,
 387                                 ARRAY_SIZE(neo1973_gta02_gpios));
 388         }
 389 }
 390 module_exit(neo1973_exit);
 391
 392 /* Module information */
 393 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
 394 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
 395 MODULE_LICENSE("GPL");