sound/soc/samsung/speyside.c

   1 /*
   2  * Speyside audio support
   3  *
   4  * Copyright 2011 Wolfson Microelectronics
   5  *
   6  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #include <sound/soc.h>
  13 #include <sound/soc-dapm.h>
  14 #include <sound/jack.h>
  15 #include <linux/gpio.h>
  16 #include <linux/module.h>
  17
  18 #include "../codecs/wm8996.h"
  19 #include "../codecs/wm9081.h"
  20
  21 #define WM8996_HPSEL_GPIO 214
  22 #define MCLK_AUDIO_RATE (512 * 48000)
  23
  24 static int speyside_set_bias_level(struct snd_soc_card *card,
  25                                    struct snd_soc_dapm_context *dapm,
  26                                    enum snd_soc_bias_level level)
  27 {
  28         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  29         int ret;
  30
  31         if (dapm->dev != codec_dai->dev)
  32                 return 0;
  33
  34         switch (level) {
  35         case SND_SOC_BIAS_STANDBY:
  36                 ret = snd_soc_dai_set_sysclk(codec_dai, WM8996_SYSCLK_MCLK2,
  37                                              32768, SND_SOC_CLOCK_IN);
  38                 if (ret < 0)
  39                         return ret;
  40
  41                 ret = snd_soc_dai_set_pll(codec_dai, WM8996_FLL_MCLK2,
  42                                           0, 0, 0);
  43                 if (ret < 0) {
  44                         pr_err("Failed to stop FLL\n");
  45                         return ret;
  46                 }
  47                 break;
  48
  49         default:
  50                 break;
  51         }
  52
  53         return 0;
  54 }
  55
  56 static int speyside_set_bias_level_post(struct snd_soc_card *card,
  57                                         struct snd_soc_dapm_context *dapm,
  58                                         enum snd_soc_bias_level level)
  59 {
  60         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  61         int ret;
  62
  63         if (dapm->dev != codec_dai->dev)
  64                 return 0;
  65
  66         switch (level) {
  67         case SND_SOC_BIAS_PREPARE:
  68                 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
  69                         ret = snd_soc_dai_set_pll(codec_dai, 0,
  70                                                   WM8996_FLL_MCLK2,
  71                                                   32768, MCLK_AUDIO_RATE);
  72                         if (ret < 0) {
  73                                 pr_err("Failed to start FLL\n");
  74                                 return ret;
  75                         }
  76
  77                         ret = snd_soc_dai_set_sysclk(codec_dai,
  78                                                      WM8996_SYSCLK_FLL,
  79                                                      MCLK_AUDIO_RATE,
  80                                                      SND_SOC_CLOCK_IN);
  81                         if (ret < 0)
  82                                 return ret;
  83                 }
  84                 break;
  85
  86         default:
  87                 break;
  88         }
  89
  90         card->dapm.bias_level = level;
  91
  92         return 0;
  93 }
  94
  95 static struct snd_soc_jack speyside_headset;
  96
  97 /* Headset jack detection DAPM pins */
  98 static struct snd_soc_jack_pin speyside_headset_pins[] = {
  99         {
 100                 .pin = "Headset Mic",
 101                 .mask = SND_JACK_MICROPHONE,
 102         },
 103 };
 104
 105 /* Default the headphone selection to active high */
 106 static int speyside_jack_polarity;
 107
 108 static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
 109                                 struct snd_soc_dapm_widget *sink)
 110 {
 111         if (speyside_jack_polarity && (strcmp(source->name, "MICB1") == 0))
 112                 return 1;
 113         if (!speyside_jack_polarity && (strcmp(source->name, "MICB2") == 0))
 114                 return 1;
 115
 116         return 0;
 117 }
 118
 119 static void speyside_set_polarity(struct snd_soc_codec *codec,
 120                                   int polarity)
 121 {
 122         speyside_jack_polarity = !polarity;
 123         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
 124
 125         /* Re-run DAPM to make sure we're using the correct mic bias */
 126         snd_soc_dapm_sync(&codec->dapm);
 127 }
 128
 129 static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
 130 {
 131         struct snd_soc_dai *dai = rtd->codec_dai;
 132         struct snd_soc_codec *codec = rtd->codec;
 133         int ret;
 134
 135         ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
 136         if (ret < 0)
 137                 return ret;
 138
 139         ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
 140         if (ret != 0)
 141                 pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
 142         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
 143
 144         ret = snd_soc_jack_new(codec, "Headset",
 145                                SND_JACK_LINEOUT | SND_JACK_HEADSET |
 146                                SND_JACK_BTN_0,
 147                                &speyside_headset);
 148         if (ret)
 149                 return ret;
 150
 151         ret = snd_soc_jack_add_pins(&speyside_headset,
 152                                     ARRAY_SIZE(speyside_headset_pins),
 153                                     speyside_headset_pins);
 154         if (ret)
 155                 return ret;
 156
 157         wm8996_detect(codec, &speyside_headset, speyside_set_polarity);
 158
 159         return 0;
 160 }
 161
 162 static int speyside_late_probe(struct snd_soc_card *card)
 163 {
 164         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
 165         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
 166         snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
 167         snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
 168         snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
 169         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
 170         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
 171
 172         return 0;
 173 }
 174
 175 static struct snd_soc_dai_link speyside_dai[] = {
 176         {
 177                 .name = "CPU",
 178                 .stream_name = "CPU",
 179                 .cpu_dai_name = "samsung-i2s.0",
 180                 .codec_dai_name = "wm8996-aif1",
 181                 .platform_name = "samsung-audio",
 182                 .codec_name = "wm8996.1-001a",
 183                 .init = speyside_wm8996_init,
 184                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 185                                 | SND_SOC_DAIFMT_CBM_CFM,
 186         },
 187         {
 188                 .name = "Baseband",
 189                 .stream_name = "Baseband",
 190                 .cpu_dai_name = "wm8996-aif2",
 191                 .codec_dai_name = "wm1250-ev1",
 192                 .codec_name = "wm1250-ev1.1-0027",
 193                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 194                                 | SND_SOC_DAIFMT_CBM_CFM,
 195                 .ignore_suspend = 1,
 196         },
 197 };
 198
 199 static int speyside_wm9081_init(struct snd_soc_dapm_context *dapm)
 200 {
 201         /* At any time the WM9081 is active it will have this clock */
 202         return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK, 0,
 203                                         MCLK_AUDIO_RATE, 0);
 204 }
 205
 206 static struct snd_soc_aux_dev speyside_aux_dev[] = {
 207         {
 208                 .name = "wm9081",
 209                 .codec_name = "wm9081.1-006c",
 210                 .init = speyside_wm9081_init,
 211         },
 212 };
 213
 214 static struct snd_soc_codec_conf speyside_codec_conf[] = {
 215         {
 216                 .dev_name = "wm9081.1-006c",
 217                 .name_prefix = "Sub",
 218         },
 219 };
 220
 221 static const struct snd_kcontrol_new controls[] = {
 222         SOC_DAPM_PIN_SWITCH("Main Speaker"),
 223         SOC_DAPM_PIN_SWITCH("Main DMIC"),
 224         SOC_DAPM_PIN_SWITCH("Main AMIC"),
 225         SOC_DAPM_PIN_SWITCH("WM1250 Input"),
 226         SOC_DAPM_PIN_SWITCH("WM1250 Output"),
 227         SOC_DAPM_PIN_SWITCH("Headphone"),
 228 };
 229
 230 static struct snd_soc_dapm_widget widgets[] = {
 231         SND_SOC_DAPM_HP("Headphone", NULL),
 232         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 233
 234         SND_SOC_DAPM_SPK("Main Speaker", NULL),
 235
 236         SND_SOC_DAPM_MIC("Main AMIC", NULL),
 237         SND_SOC_DAPM_MIC("Main DMIC", NULL),
 238 };
 239
 240 static struct snd_soc_dapm_route audio_paths[] = {
 241         { "IN1RN", NULL, "MICB1" },
 242         { "IN1RP", NULL, "MICB1" },
 243         { "IN1RN", NULL, "MICB2" },
 244         { "IN1RP", NULL, "MICB2" },
 245         { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
 246         { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
 247
 248         { "IN1LP", NULL, "MICB2" },
 249         { "IN1RN", NULL, "MICB1" },
 250         { "MICB2", NULL, "Main AMIC" },
 251
 252         { "DMIC1DAT", NULL, "MICB1" },
 253         { "DMIC2DAT", NULL, "MICB1" },
 254         { "MICB1", NULL, "Main DMIC" },
 255
 256         { "Headphone", NULL, "HPOUT1L" },
 257         { "Headphone", NULL, "HPOUT1R" },
 258
 259         { "Sub IN1", NULL, "HPOUT2L" },
 260         { "Sub IN2", NULL, "HPOUT2R" },
 261
 262         { "Main Speaker", NULL, "Sub SPKN" },
 263         { "Main Speaker", NULL, "Sub SPKP" },
 264         { "Main Speaker", NULL, "SPKDAT" },
 265 };
 266
 267 static struct snd_soc_card speyside = {
 268         .name = "Speyside",
 269         .owner = THIS_MODULE,
 270         .dai_link = speyside_dai,
 271         .num_links = ARRAY_SIZE(speyside_dai),
 272         .aux_dev = speyside_aux_dev,
 273         .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
 274         .codec_conf = speyside_codec_conf,
 275         .num_configs = ARRAY_SIZE(speyside_codec_conf),
 276
 277         .set_bias_level = speyside_set_bias_level,
 278         .set_bias_level_post = speyside_set_bias_level_post,
 279
 280         .controls = controls,
 281         .num_controls = ARRAY_SIZE(controls),
 282         .dapm_widgets = widgets,
 283         .num_dapm_widgets = ARRAY_SIZE(widgets),
 284         .dapm_routes = audio_paths,
 285         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 286         .fully_routed = true,
 287
 288         .late_probe = speyside_late_probe,
 289 };
 290
 291 static __devinit int speyside_probe(struct platform_device *pdev)
 292 {
 293         struct snd_soc_card *card = &speyside;
 294         int ret;
 295
 296         card->dev = &pdev->dev;
 297
 298         ret = snd_soc_register_card(card);
 299         if (ret) {
 300                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 301                         ret);
 302                 return ret;
 303         }
 304
 305         return 0;
 306 }
 307
 308 static int __devexit speyside_remove(struct platform_device *pdev)
 309 {
 310         struct snd_soc_card *card = platform_get_drvdata(pdev);
 311
 312         snd_soc_unregister_card(card);
 313
 314         return 0;
 315 }
 316
 317 static struct platform_driver speyside_driver = {
 318         .driver = {
 319                 .name = "speyside",
 320                 .owner = THIS_MODULE,
 321                 .pm = &snd_soc_pm_ops,
 322         },
 323         .probe = speyside_probe,
 324         .remove = __devexit_p(speyside_remove),
 325 };
 326
 327 module_platform_driver(speyside_driver);
 328
 329 MODULE_DESCRIPTION("Speyside audio support");
 330 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 331 MODULE_LICENSE("GPL");
 332 MODULE_ALIAS("platform:speyside");