kernel/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[1].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[1].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_wm0010_init(struct snd_soc_pcm_runtime *rtd)
 130 {
 131         struct snd_soc_dai *dai = rtd->codec_dai;
 132         int ret;
 133
 134         ret = snd_soc_dai_set_sysclk(dai, 0, MCLK_AUDIO_RATE, 0);
 135         if (ret < 0)
 136                 return ret;
 137
 138         return 0;
 139 }
 140
 141 static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
 142 {
 143         struct snd_soc_dai *dai = rtd->codec_dai;
 144         struct snd_soc_codec *codec = rtd->codec;
 145         int ret;
 146
 147         ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
 148         if (ret < 0)
 149                 return ret;
 150
 151         ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
 152         if (ret != 0)
 153                 pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
 154         gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
 155
 156         ret = snd_soc_card_jack_new(rtd->card, "Headset", SND_JACK_LINEOUT |
 157                                     SND_JACK_HEADSET | SND_JACK_BTN_0,
 158                                     &speyside_headset, speyside_headset_pins,
 159                                     ARRAY_SIZE(speyside_headset_pins));
 160         if (ret)
 161                 return ret;
 162
 163         wm8996_detect(codec, &speyside_headset, speyside_set_polarity);
 164
 165         return 0;
 166 }
 167
 168 static int speyside_late_probe(struct snd_soc_card *card)
 169 {
 170         snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
 171         snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
 172         snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
 173         snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
 174         snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
 175         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
 176         snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
 177
 178         return 0;
 179 }
 180
 181 static const struct snd_soc_pcm_stream dsp_codec_params = {
 182         .formats = SNDRV_PCM_FMTBIT_S32_LE,
 183         .rate_min = 48000,
 184         .rate_max = 48000,
 185         .channels_min = 2,
 186         .channels_max = 2,
 187 };
 188
 189 static struct snd_soc_dai_link speyside_dai[] = {
 190         {
 191                 .name = "CPU-DSP",
 192                 .stream_name = "CPU-DSP",
 193                 .cpu_dai_name = "samsung-i2s.0",
 194                 .codec_dai_name = "wm0010-sdi1",
 195                 .platform_name = "samsung-i2s.0",
 196                 .codec_name = "spi0.0",
 197                 .init = speyside_wm0010_init,
 198                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 199                                 | SND_SOC_DAIFMT_CBM_CFM,
 200         },
 201         {
 202                 .name = "DSP-CODEC",
 203                 .stream_name = "DSP-CODEC",
 204                 .cpu_dai_name = "wm0010-sdi2",
 205                 .codec_dai_name = "wm8996-aif1",
 206                 .codec_name = "wm8996.1-001a",
 207                 .init = speyside_wm8996_init,
 208                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 209                                 | SND_SOC_DAIFMT_CBM_CFM,
 210                 .params = &dsp_codec_params,
 211                 .ignore_suspend = 1,
 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                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 220                                 | SND_SOC_DAIFMT_CBM_CFM,
 221                 .ignore_suspend = 1,
 222         },
 223 };
 224
 225 static int speyside_wm9081_init(struct snd_soc_component *component)
 226 {
 227         struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
 228
 229         /* At any time the WM9081 is active it will have this clock */
 230         return snd_soc_codec_set_sysclk(codec, WM9081_SYSCLK_MCLK, 0,
 231                                         MCLK_AUDIO_RATE, 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         SOC_DAPM_PIN_SWITCH("Headphone"),
 256 };
 257
 258 static struct snd_soc_dapm_widget widgets[] = {
 259         SND_SOC_DAPM_HP("Headphone", NULL),
 260         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 261
 262         SND_SOC_DAPM_SPK("Main Speaker", NULL),
 263
 264         SND_SOC_DAPM_MIC("Main AMIC", NULL),
 265         SND_SOC_DAPM_MIC("Main DMIC", NULL),
 266 };
 267
 268 static struct snd_soc_dapm_route audio_paths[] = {
 269         { "IN1RN", NULL, "MICB1" },
 270         { "IN1RP", NULL, "MICB1" },
 271         { "IN1RN", NULL, "MICB2" },
 272         { "IN1RP", NULL, "MICB2" },
 273         { "MICB1", NULL, "Headset Mic", speyside_get_micbias },
 274         { "MICB2", NULL, "Headset Mic", speyside_get_micbias },
 275
 276         { "IN1LP", NULL, "MICB2" },
 277         { "IN1RN", NULL, "MICB1" },
 278         { "MICB2", NULL, "Main AMIC" },
 279
 280         { "DMIC1DAT", NULL, "MICB1" },
 281         { "DMIC2DAT", NULL, "MICB1" },
 282         { "MICB1", NULL, "Main DMIC" },
 283
 284         { "Headphone", NULL, "HPOUT1L" },
 285         { "Headphone", NULL, "HPOUT1R" },
 286
 287         { "Sub IN1", NULL, "HPOUT2L" },
 288         { "Sub IN2", NULL, "HPOUT2R" },
 289
 290         { "Main Speaker", NULL, "Sub SPKN" },
 291         { "Main Speaker", NULL, "Sub SPKP" },
 292         { "Main Speaker", NULL, "SPKDAT" },
 293 };
 294
 295 static struct snd_soc_card speyside = {
 296         .name = "Speyside",
 297         .owner = THIS_MODULE,
 298         .dai_link = speyside_dai,
 299         .num_links = ARRAY_SIZE(speyside_dai),
 300         .aux_dev = speyside_aux_dev,
 301         .num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
 302         .codec_conf = speyside_codec_conf,
 303         .num_configs = ARRAY_SIZE(speyside_codec_conf),
 304
 305         .set_bias_level = speyside_set_bias_level,
 306         .set_bias_level_post = speyside_set_bias_level_post,
 307
 308         .controls = controls,
 309         .num_controls = ARRAY_SIZE(controls),
 310         .dapm_widgets = widgets,
 311         .num_dapm_widgets = ARRAY_SIZE(widgets),
 312         .dapm_routes = audio_paths,
 313         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 314         .fully_routed = true,
 315
 316         .late_probe = speyside_late_probe,
 317 };
 318
 319 static int speyside_probe(struct platform_device *pdev)
 320 {
 321         struct snd_soc_card *card = &speyside;
 322         int ret;
 323
 324         card->dev = &pdev->dev;
 325
 326         ret = devm_snd_soc_register_card(&pdev->dev, card);
 327         if (ret)
 328                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 329                         ret);
 330
 331         return ret;
 332 }
 333
 334 static struct platform_driver speyside_driver = {
 335         .driver = {
 336                 .name = "speyside",
 337                 .pm = &snd_soc_pm_ops,
 338         },
 339         .probe = speyside_probe,
 340 };
 341
 342 module_platform_driver(speyside_driver);
 343
 344 MODULE_DESCRIPTION("Speyside audio support");
 345 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 346 MODULE_LICENSE("GPL");
 347 MODULE_ALIAS("platform:speyside");