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 int speyside_hw_params(struct snd_pcm_substream *substream,
  96                               struct snd_pcm_hw_params *params)
  97 {
  98         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  99         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 100         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 101         int ret;
 102
 103         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
 104                                          | SND_SOC_DAIFMT_NB_NF
 105                                          | SND_SOC_DAIFMT_CBM_CFM);
 106         if (ret < 0)
 107                 return ret;
 108
 109         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
 110                                          | SND_SOC_DAIFMT_NB_NF
 111                                          | SND_SOC_DAIFMT_CBM_CFM);
 112         if (ret < 0)
 113                 return ret;
 114
 115         return 0;
 116 }
 117
 118 static struct snd_soc_ops speyside_ops = {
 119         .hw_params = speyside_hw_params,
 120 };
 121
 122 static struct snd_soc_jack speyside_headset;
 123
 124 /* Headset jack detection DAPM pins */
 125 static struct snd_soc_jack_pin speyside_headset_pins[] = {
 126         {
 127                 .pin = "Headset Mic",
 128                 .mask = SND_JACK_MICROPHONE,
 129         },
 130 };
 131
 132 /* Default the headphone selection to active high */
 133 static int speyside_jack_polarity;
 134
 135 static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
 136                                 struct snd_soc_dapm_widget *sink)
 137 {
 138         if (speyside_jack_polarity && (strcmp(source->name, "MICB1") == 0))
 139                 return 1;
 140         if (!speyside_jack_polarity && (strcmp(source->name, "MICB2") == 0))
 141                 return 1;
 142
 143         return 0;
 144 }
 145
 146 static void speyside_set_polarity(struct snd_soc_codec *codec,
 147                                   int polarity)
 148 {
 149         speyside_jack_polarity = !polarity;
 150         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
 151
 152         /* Re-run DAPM to make sure we're using the correct mic bias */
 153         snd_soc_dapm_sync(&codec->dapm);
 154 }
 155
 156 static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
 157 {
 158         struct snd_soc_dai *dai = rtd->codec_dai;
 159         struct snd_soc_codec *codec = rtd->codec;
 160         int ret;
 161
 162         ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
 163         if (ret < 0)
 164                 return ret;
 165
 166         ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
 167         if (ret != 0)
 168                 pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
 169         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
 170
 171         ret = snd_soc_jack_new(codec, "Headset",
 172                                SND_JACK_LINEOUT | SND_JACK_HEADSET |
 173                                SND_JACK_BTN_0,
 174                                &speyside_headset);
 175         if (ret)
 176                 return ret;
 177
 178         ret = snd_soc_jack_add_pins(&speyside_headset,
 179                                     ARRAY_SIZE(speyside_headset_pins),
 180                                     speyside_headset_pins);
 181         if (ret)
 182                 return ret;
 183
 184         wm8996_detect(codec, &speyside_headset, speyside_set_polarity);
 185
 186         return 0;
 187 }
 188
 189 static int speyside_late_probe(struct snd_soc_card *card)
 190 {
 191         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
 192         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
 193         snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
 194         snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
 195         snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
 196         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
 197         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
 198
 199         return 0;
 200 }
 201
 202 static struct snd_soc_dai_link speyside_dai[] = {
 203         {
 204                 .name = "CPU",
 205                 .stream_name = "CPU",
 206                 .cpu_dai_name = "samsung-i2s.0",
 207                 .codec_dai_name = "wm8996-aif1",
 208                 .platform_name = "samsung-audio",
 209                 .codec_name = "wm8996.1-001a",
 210                 .init = speyside_wm8996_init,
 211                 .ops = &speyside_ops,
 212         },
 213         {
 214                 .name = "Baseband",
 215                 .stream_name = "Baseband",
 216                 .cpu_dai_name = "wm8996-aif2",
 217                 .codec_dai_name = "wm1250-ev1",
 218                 .codec_name = "wm1250-ev1.1-0027",
 219                 .ops = &speyside_ops,
 220                 .ignore_suspend = 1,
 221         },
 222 };
 223
 224 static int speyside_wm9081_init(struct snd_soc_dapm_context *dapm)
 225 {
 226         /* At any time the WM9081 is active it will have this clock */
 227         return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK, 0,
 228                                         MCLK_AUDIO_RATE, 0);
 229 }
 230
 231 static struct snd_soc_aux_dev speyside_aux_dev[] = {
 232         {
 233                 .name = "wm9081",
 234                 .codec_name = "wm9081.1-006c",
 235                 .init = speyside_wm9081_init,
 236         },
 237 };
 238
 239 static struct snd_soc_codec_conf speyside_codec_conf[] = {
 240         {
 241                 .dev_name = "wm9081.1-006c",
 242                 .name_prefix = "Sub",
 243         },
 244 };
 245
 246 static const struct snd_kcontrol_new controls[] = {
 247         SOC_DAPM_PIN_SWITCH("Main Speaker"),
 248         SOC_DAPM_PIN_SWITCH("Main DMIC"),
 249         SOC_DAPM_PIN_SWITCH("Main AMIC"),
 250         SOC_DAPM_PIN_SWITCH("WM1250 Input"),
 251         SOC_DAPM_PIN_SWITCH("WM1250 Output"),
 252         SOC_DAPM_PIN_SWITCH("Headphone"),
 253 };
 254
 255 static struct snd_soc_dapm_widget widgets[] = {
 256         SND_SOC_DAPM_HP("Headphone", NULL),
 257         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 258
 259         SND_SOC_DAPM_SPK("Main Speaker", NULL),
 260
 261         SND_SOC_DAPM_MIC("Main AMIC", NULL),
 262         SND_SOC_DAPM_MIC("Main DMIC", NULL),
 263 };
 264
 265 static struct snd_soc_dapm_route audio_paths[] = {
 266         { "IN1RN", NULL, "MICB1" },
 267         { "IN1RP", NULL, "MICB1" },
 268         { "IN1RN", NULL, "MICB2" },
 269         { "IN1RP", NULL, "MICB2" },
 270         { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
 271         { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
 272
 273         { "IN1LP", NULL, "MICB2" },
 274         { "IN1RN", NULL, "MICB1" },
 275         { "MICB2", NULL, "Main AMIC" },
 276
 277         { "DMIC1DAT", NULL, "MICB1" },
 278         { "DMIC2DAT", NULL, "MICB1" },
 279         { "MICB1", NULL, "Main DMIC" },
 280
 281         { "Headphone", NULL, "HPOUT1L" },
 282         { "Headphone", NULL, "HPOUT1R" },
 283
 284         { "Sub IN1", NULL, "HPOUT2L" },
 285         { "Sub IN2", NULL, "HPOUT2R" },
 286
 287         { "Main Speaker", NULL, "Sub SPKN" },
 288         { "Main Speaker", NULL, "Sub SPKP" },
 289         { "Main Speaker", NULL, "SPKDAT" },
 290 };
 291
 292 static struct snd_soc_card speyside = {
 293         .name = "Speyside",
 294         .owner = THIS_MODULE,
 295         .dai_link = speyside_dai,
 296         .num_links = ARRAY_SIZE(speyside_dai),
 297         .aux_dev = speyside_aux_dev,
 298         .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
 299         .codec_conf = speyside_codec_conf,
 300         .num_configs = ARRAY_SIZE(speyside_codec_conf),
 301
 302         .set_bias_level = speyside_set_bias_level,
 303         .set_bias_level_post = speyside_set_bias_level_post,
 304
 305         .controls = controls,
 306         .num_controls = ARRAY_SIZE(controls),
 307         .dapm_widgets = widgets,
 308         .num_dapm_widgets = ARRAY_SIZE(widgets),
 309         .dapm_routes = audio_paths,
 310         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 311         .fully_routed = true,
 312
 313         .late_probe = speyside_late_probe,
 314 };
 315
 316 static __devinit int speyside_probe(struct platform_device *pdev)
 317 {
 318         struct snd_soc_card *card = &speyside;
 319         int ret;
 320
 321         card->dev = &pdev->dev;
 322
 323         ret = snd_soc_register_card(card);
 324         if (ret) {
 325                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 326                         ret);
 327                 return ret;
 328         }
 329
 330         return 0;
 331 }
 332
 333 static int __devexit speyside_remove(struct platform_device *pdev)
 334 {
 335         struct snd_soc_card *card = platform_get_drvdata(pdev);
 336
 337         snd_soc_unregister_card(card);
 338
 339         return 0;
 340 }
 341
 342 static struct platform_driver speyside_driver = {
 343         .driver = {
 344                 .name = "speyside",
 345                 .owner = THIS_MODULE,
 346                 .pm = &snd_soc_pm_ops,
 347         },
 348         .probe = speyside_probe,
 349         .remove = __devexit_p(speyside_remove),
 350 };
 351
 352 module_platform_driver(speyside_driver);
 353
 354 MODULE_DESCRIPTION("Speyside audio support");
 355 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 356 MODULE_LICENSE("GPL");
 357 MODULE_ALIAS("platform:speyside");