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
  17 #include "../codecs/wm8996.h"
  18 #include "../codecs/wm9081.h"
  19
  20 #define WM8996_HPSEL_GPIO 214
  21
  22 static int speyside_set_bias_level(struct snd_soc_card *card,
  23                                    struct snd_soc_dapm_context *dapm,
  24                                    enum snd_soc_bias_level level)
  25 {
  26         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  27         int ret;
  28
  29         if (dapm->dev != codec_dai->dev)
  30                 return 0;
  31
  32         switch (level) {
  33         case SND_SOC_BIAS_STANDBY:
  34                 ret = snd_soc_dai_set_sysclk(codec_dai, WM8996_SYSCLK_MCLK2,
  35                                              32768, SND_SOC_CLOCK_IN);
  36                 if (ret < 0)
  37                         return ret;
  38
  39                 ret = snd_soc_dai_set_pll(codec_dai, WM8996_FLL_MCLK2,
  40                                           0, 0, 0);
  41                 if (ret < 0) {
  42                         pr_err("Failed to stop FLL\n");
  43                         return ret;
  44                 }
  45                 break;
  46
  47         default:
  48                 break;
  49         }
  50
  51         return 0;
  52 }
  53
  54 static int speyside_set_bias_level_post(struct snd_soc_card *card,
  55                                         struct snd_soc_dapm_context *dapm,
  56                                         enum snd_soc_bias_level level)
  57 {
  58         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
  59         int ret;
  60
  61         if (dapm->dev != codec_dai->dev)
  62                 return 0;
  63
  64         switch (level) {
  65         case SND_SOC_BIAS_PREPARE:
  66                 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
  67                         ret = snd_soc_dai_set_pll(codec_dai, 0,
  68                                                   WM8996_FLL_MCLK2,
  69                                                   32768, 48000 * 256);
  70                         if (ret < 0) {
  71                                 pr_err("Failed to start FLL\n");
  72                                 return ret;
  73                         }
  74
  75                         ret = snd_soc_dai_set_sysclk(codec_dai,
  76                                                      WM8996_SYSCLK_FLL,
  77                                                      48000 * 256,
  78                                                      SND_SOC_CLOCK_IN);
  79                         if (ret < 0)
  80                                 return ret;
  81                 }
  82                 break;
  83
  84         default:
  85                 break;
  86         }
  87
  88         card->dapm.bias_level = level;
  89
  90         return 0;
  91 }
  92
  93 static int speyside_hw_params(struct snd_pcm_substream *substream,
  94                               struct snd_pcm_hw_params *params)
  95 {
  96         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  97         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  98         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  99         int ret;
 100
 101         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
 102                                          | SND_SOC_DAIFMT_NB_NF
 103                                          | SND_SOC_DAIFMT_CBM_CFM);
 104         if (ret < 0)
 105                 return ret;
 106
 107         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
 108                                          | SND_SOC_DAIFMT_NB_NF
 109                                          | SND_SOC_DAIFMT_CBM_CFM);
 110         if (ret < 0)
 111                 return ret;
 112
 113         return 0;
 114 }
 115
 116 static struct snd_soc_ops speyside_ops = {
 117         .hw_params = speyside_hw_params,
 118 };
 119
 120 static struct snd_soc_jack speyside_headset;
 121
 122 /* Headset jack detection DAPM pins */
 123 static struct snd_soc_jack_pin speyside_headset_pins[] = {
 124         {
 125                 .pin = "Headset Mic",
 126                 .mask = SND_JACK_MICROPHONE,
 127         },
 128         {
 129                 .pin = "Headphone",
 130                 .mask = SND_JACK_HEADPHONE,
 131         },
 132 };
 133
 134 /* Default the headphone selection to active high */
 135 static int speyside_jack_polarity;
 136
 137 static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
 138                                 struct snd_soc_dapm_widget *sink)
 139 {
 140         if (speyside_jack_polarity && (strcmp(source->name, "MICB1") == 0))
 141                 return 1;
 142         if (!speyside_jack_polarity && (strcmp(source->name, "MICB2") == 0))
 143                 return 1;
 144
 145         return 0;
 146 }
 147
 148 static void speyside_set_polarity(struct snd_soc_codec *codec,
 149                                   int polarity)
 150 {
 151         speyside_jack_polarity = !polarity;
 152         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
 153
 154         /* Re-run DAPM to make sure we're using the correct mic bias */
 155         snd_soc_dapm_sync(&codec->dapm);
 156 }
 157
 158 static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
 159 {
 160         struct snd_soc_dai *dai = rtd->codec_dai;
 161         struct snd_soc_codec *codec = rtd->codec;
 162         int ret;
 163
 164         ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
 165         if (ret < 0)
 166                 return ret;
 167
 168         ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
 169         if (ret != 0)
 170                 pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
 171         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
 172
 173         ret = snd_soc_jack_new(codec, "Headset",
 174                                SND_JACK_HEADSET | SND_JACK_BTN_0,
 175                                &speyside_headset);
 176         if (ret)
 177                 return ret;
 178
 179         ret = snd_soc_jack_add_pins(&speyside_headset,
 180                                     ARRAY_SIZE(speyside_headset_pins),
 181                                     speyside_headset_pins);
 182         if (ret)
 183                 return ret;
 184
 185         wm8996_detect(codec, &speyside_headset, speyside_set_polarity);
 186
 187         return 0;
 188 }
 189
 190 static int speyside_late_probe(struct snd_soc_card *card)
 191 {
 192         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
 193         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
 194         snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
 195         snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
 196         snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker");
 197         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
 198         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
 199
 200         return 0;
 201 }
 202
 203 static struct snd_soc_dai_link speyside_dai[] = {
 204         {
 205                 .name = "CPU",
 206                 .stream_name = "CPU",
 207                 .cpu_dai_name = "samsung-i2s.0",
 208                 .codec_dai_name = "wm8996-aif1",
 209                 .platform_name = "samsung-audio",
 210                 .codec_name = "wm8996.1-001a",
 211                 .init = speyside_wm8996_init,
 212                 .ops = &speyside_ops,
 213         },
 214         {
 215                 .name = "Baseband",
 216                 .stream_name = "Baseband",
 217                 .cpu_dai_name = "wm8996-aif2",
 218                 .codec_dai_name = "wm1250-ev1",
 219                 .codec_name = "wm1250-ev1.1-0027",
 220                 .ops = &speyside_ops,
 221                 .ignore_suspend = 1,
 222         },
 223 };
 224
 225 static int speyside_wm9081_init(struct snd_soc_dapm_context *dapm)
 226 {
 227         snd_soc_dapm_nc_pin(dapm, "LINEOUT");
 228
 229         /* At any time the WM9081 is active it will have this clock */
 230         return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK,
 231                                         48000 * 256, 0);
 232 }
 233
 234 static struct snd_soc_aux_dev speyside_aux_dev[] = {
 235         {
 236                 .name = "wm9081",
 237                 .codec_name = "wm9081.1-006c",
 238                 .init = speyside_wm9081_init,
 239         },
 240 };
 241
 242 static struct snd_soc_codec_conf speyside_codec_conf[] = {
 243         {
 244                 .dev_name = "wm9081.1-006c",
 245                 .name_prefix = "Sub",
 246         },
 247 };
 248
 249 static const struct snd_kcontrol_new controls[] = {
 250         SOC_DAPM_PIN_SWITCH("Main Speaker"),
 251         SOC_DAPM_PIN_SWITCH("Main DMIC"),
 252         SOC_DAPM_PIN_SWITCH("Main AMIC"),
 253         SOC_DAPM_PIN_SWITCH("WM1250 Input"),
 254         SOC_DAPM_PIN_SWITCH("WM1250 Output"),
 255 };
 256
 257 static struct snd_soc_dapm_widget widgets[] = {
 258         SND_SOC_DAPM_HP("Headphone", NULL),
 259         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 260
 261         SND_SOC_DAPM_SPK("Main Speaker", NULL),
 262
 263         SND_SOC_DAPM_MIC("Main AMIC", NULL),
 264         SND_SOC_DAPM_MIC("Main DMIC", NULL),
 265 };
 266
 267 static struct snd_soc_dapm_route audio_paths[] = {
 268         { "IN1RN", NULL, "MICB1" },
 269         { "IN1RP", NULL, "MICB1" },
 270         { "IN1RN", NULL, "MICB2" },
 271         { "IN1RP", NULL, "MICB2" },
 272         { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
 273         { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
 274
 275         { "IN1LP", NULL, "MICB2" },
 276         { "IN1RN", NULL, "MICB1" },
 277         { "MICB2", NULL, "Main AMIC" },
 278
 279         { "DMIC1DAT", NULL, "MICB1" },
 280         { "DMIC2DAT", NULL, "MICB1" },
 281         { "MICB1", NULL, "Main DMIC" },
 282
 283         { "Headphone", NULL, "HPOUT1L" },
 284         { "Headphone", NULL, "HPOUT1R" },
 285
 286         { "Sub IN1", NULL, "HPOUT2L" },
 287         { "Sub IN2", NULL, "HPOUT2R" },
 288
 289         { "Main Speaker", NULL, "Sub SPKN" },
 290         { "Main Speaker", NULL, "Sub SPKP" },
 291         { "Main Speaker", NULL, "SPKDAT" },
 292 };
 293
 294 static struct snd_soc_card speyside = {
 295         .name = "Speyside",
 296         .dai_link = speyside_dai,
 297         .num_links = ARRAY_SIZE(speyside_dai),
 298         .aux_dev = speyside_aux_dev,
 299         .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
 300         .codec_conf = speyside_codec_conf,
 301         .num_configs = ARRAY_SIZE(speyside_codec_conf),
 302
 303         .set_bias_level = speyside_set_bias_level,
 304         .set_bias_level_post = speyside_set_bias_level_post,
 305
 306         .controls = controls,
 307         .num_controls = ARRAY_SIZE(controls),
 308         .dapm_widgets = widgets,
 309         .num_dapm_widgets = ARRAY_SIZE(widgets),
 310         .dapm_routes = audio_paths,
 311         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 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 static int __init speyside_audio_init(void)
 353 {
 354         return platform_driver_register(&speyside_driver);
 355 }
 356 module_init(speyside_audio_init);
 357
 358 static void __exit speyside_audio_exit(void)
 359 {
 360         platform_driver_unregister(&speyside_driver);
 361 }
 362 module_exit(speyside_audio_exit);
 363
 364 MODULE_DESCRIPTION("Speyside audio support");
 365 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 366 MODULE_LICENSE("GPL");
 367 MODULE_ALIAS("platform:speyside");