sound/soc/intel/boards/cht_bsw_max98090_ti.c

   1 /*
   2  *  cht-bsw-max98090.c - ASoc Machine driver for Intel Cherryview-based
   3  *  platforms Cherrytrail and Braswell, with max98090 & TI codec.
   4  *
   5  *  Copyright (C) 2015 Intel Corp
   6  *  Author: Fang, Yang A <yang.a.fang@intel.com>
   7  *  This file is modified from cht_bsw_rt5645.c
   8  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; version 2 of the License.
  13  *
  14  *  This program is distributed in the hope that it will be useful, but
  15  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  *  General Public License for more details.
  18  *
  19  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/slab.h>
  25 #include <linux/acpi.h>
  26 #include <linux/clk.h>
  27 #include <sound/pcm.h>
  28 #include <sound/pcm_params.h>
  29 #include <sound/soc.h>
  30 #include <sound/jack.h>
  31 #include "../../codecs/max98090.h"
  32 #include "../atom/sst-atom-controls.h"
  33 #include "../../codecs/ts3a227e.h"
  34
  35 #define CHT_PLAT_CLK_3_HZ       19200000
  36 #define CHT_CODEC_DAI   "HiFi"
  37
  38 struct cht_mc_private {
  39         struct clk *mclk;
  40         struct snd_soc_jack jack;
  41         bool ts3a227e_present;
  42 };
  43
  44 static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
  45 {
  46         struct snd_soc_pcm_runtime *rtd;
  47
  48         list_for_each_entry(rtd, &card->rtd_list, list) {
  49                 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
  50                              strlen(CHT_CODEC_DAI)))
  51                         return rtd->codec_dai;
  52         }
  53         return NULL;
  54 }
  55
  56 static int platform_clock_control(struct snd_soc_dapm_widget *w,
  57                                           struct snd_kcontrol *k, int  event)
  58 {
  59         struct snd_soc_dapm_context *dapm = w->dapm;
  60         struct snd_soc_card *card = dapm->card;
  61         struct snd_soc_dai *codec_dai;
  62         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
  63         int ret;
  64
  65         codec_dai = cht_get_codec_dai(card);
  66         if (!codec_dai) {
  67                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
  68                 return -EIO;
  69         }
  70
  71         if (SND_SOC_DAPM_EVENT_ON(event)) {
  72                 ret = clk_prepare_enable(ctx->mclk);
  73                 if (ret < 0) {
  74                         dev_err(card->dev,
  75                                 "could not configure MCLK state");
  76                         return ret;
  77                 }
  78         } else {
  79                 clk_disable_unprepare(ctx->mclk);
  80         }
  81
  82         return 0;
  83 }
  84
  85 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
  86         SND_SOC_DAPM_HP("Headphone", NULL),
  87         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  88         SND_SOC_DAPM_MIC("Int Mic", NULL),
  89         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  90         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
  91                             platform_clock_control, SND_SOC_DAPM_PRE_PMU |
  92                             SND_SOC_DAPM_POST_PMD),
  93 };
  94
  95 static const struct snd_soc_dapm_route cht_audio_map[] = {
  96         {"IN34", NULL, "Headset Mic"},
  97         {"Headset Mic", NULL, "MICBIAS"},
  98         {"DMICL", NULL, "Int Mic"},
  99         {"Headphone", NULL, "HPL"},
 100         {"Headphone", NULL, "HPR"},
 101         {"Ext Spk", NULL, "SPKL"},
 102         {"Ext Spk", NULL, "SPKR"},
 103         {"HiFi Playback", NULL, "ssp2 Tx"},
 104         {"ssp2 Tx", NULL, "codec_out0"},
 105         {"ssp2 Tx", NULL, "codec_out1"},
 106         {"codec_in0", NULL, "ssp2 Rx" },
 107         {"codec_in1", NULL, "ssp2 Rx" },
 108         {"ssp2 Rx", NULL, "HiFi Capture"},
 109         {"Headphone", NULL, "Platform Clock"},
 110         {"Headset Mic", NULL, "Platform Clock"},
 111         {"Int Mic", NULL, "Platform Clock"},
 112         {"Ext Spk", NULL, "Platform Clock"},
 113 };
 114
 115 static const struct snd_kcontrol_new cht_mc_controls[] = {
 116         SOC_DAPM_PIN_SWITCH("Headphone"),
 117         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 118         SOC_DAPM_PIN_SWITCH("Int Mic"),
 119         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 120 };
 121
 122 static int cht_aif1_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         int ret;
 128
 129         ret = snd_soc_dai_set_sysclk(codec_dai, M98090_REG_SYSTEM_CLOCK,
 130                                      CHT_PLAT_CLK_3_HZ, SND_SOC_CLOCK_IN);
 131         if (ret < 0) {
 132                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 133                 return ret;
 134         }
 135
 136         return 0;
 137 }
 138
 139 static int cht_ti_jack_event(struct notifier_block *nb,
 140                 unsigned long event, void *data)
 141 {
 142         struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
 143         struct snd_soc_dapm_context *dapm = &jack->card->dapm;
 144
 145         if (event & SND_JACK_MICROPHONE) {
 146                 snd_soc_dapm_force_enable_pin(dapm, "SHDN");
 147                 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
 148                 snd_soc_dapm_sync(dapm);
 149         } else {
 150                 snd_soc_dapm_disable_pin(dapm, "MICBIAS");
 151                 snd_soc_dapm_disable_pin(dapm, "SHDN");
 152                 snd_soc_dapm_sync(dapm);
 153         }
 154
 155         return 0;
 156 }
 157
 158 static struct notifier_block cht_jack_nb = {
 159         .notifier_call = cht_ti_jack_event,
 160 };
 161
 162 static struct snd_soc_jack_pin hs_jack_pins[] = {
 163         {
 164                 .pin    = "Headphone",
 165                 .mask   = SND_JACK_HEADPHONE,
 166         },
 167         {
 168                 .pin    = "Headset Mic",
 169                 .mask   = SND_JACK_MICROPHONE,
 170         },
 171 };
 172
 173 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 174         {
 175                 .name           = "hp",
 176                 .report         = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
 177                 .debounce_time  = 200,
 178         },
 179         {
 180                 .name           = "mic",
 181                 .invert         = 1,
 182                 .report         = SND_JACK_MICROPHONE,
 183                 .debounce_time  = 200,
 184         },
 185 };
 186
 187 static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
 188 static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
 189
 190 static const struct acpi_gpio_mapping acpi_max98090_gpios[] = {
 191         { "hp-gpios", &hp_gpios, 1 },
 192         { "mic-gpios", &mic_gpios, 1 },
 193         {},
 194 };
 195
 196 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 197 {
 198         int ret;
 199         int jack_type;
 200         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
 201         struct snd_soc_jack *jack = &ctx->jack;
 202
 203         if (ctx->ts3a227e_present) {
 204                 /*
 205                  * The jack has already been created in the
 206                  * cht_max98090_headset_init() function.
 207                  */
 208                 snd_soc_jack_notifier_register(jack, &cht_jack_nb);
 209                 return 0;
 210         }
 211
 212         jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
 213
 214         ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
 215                                     jack_type, jack,
 216                                     hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
 217         if (ret) {
 218                 dev_err(runtime->dev, "Headset Jack creation failed %d\n", ret);
 219                 return ret;
 220         }
 221
 222         ret = snd_soc_jack_add_gpiods(runtime->card->dev->parent, jack,
 223                                       ARRAY_SIZE(hs_jack_gpios),
 224                                       hs_jack_gpios);
 225         if (ret) {
 226                 /*
 227                  * flag error but don't bail if jack detect is broken
 228                  * due to platform issues or bad BIOS/configuration
 229                  */
 230                 dev_err(runtime->dev,
 231                         "jack detection gpios not added, error %d\n", ret);
 232         }
 233
 234         /*
 235          * The firmware might enable the clock at
 236          * boot (this information may or may not
 237          * be reflected in the enable clock register).
 238          * To change the rate we must disable the clock
 239          * first to cover these cases. Due to common
 240          * clock framework restrictions that do not allow
 241          * to disable a clock that has not been enabled,
 242          * we need to enable the clock first.
 243          */
 244         ret = clk_prepare_enable(ctx->mclk);
 245         if (!ret)
 246                 clk_disable_unprepare(ctx->mclk);
 247
 248         ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ);
 249
 250         if (ret)
 251                 dev_err(runtime->dev, "unable to set MCLK rate\n");
 252
 253         return ret;
 254 }
 255
 256 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 257                             struct snd_pcm_hw_params *params)
 258 {
 259         struct snd_interval *rate = hw_param_interval(params,
 260                         SNDRV_PCM_HW_PARAM_RATE);
 261         struct snd_interval *channels = hw_param_interval(params,
 262                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 263         int ret = 0;
 264         unsigned int fmt = 0;
 265
 266         ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
 267         if (ret < 0) {
 268                 dev_err(rtd->dev, "can't set cpu_dai slot fmt: %d\n", ret);
 269                 return ret;
 270         }
 271
 272         fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF
 273                                 | SND_SOC_DAIFMT_CBS_CFS;
 274
 275         ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
 276         if (ret < 0) {
 277                 dev_err(rtd->dev, "can't set cpu_dai set fmt: %d\n", ret);
 278                 return ret;
 279         }
 280
 281         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 282         rate->min = rate->max = 48000;
 283         channels->min = channels->max = 2;
 284
 285         /* set SSP2 to 24-bit */
 286         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 287         return 0;
 288 }
 289
 290 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 291 {
 292         return snd_pcm_hw_constraint_single(substream->runtime,
 293                         SNDRV_PCM_HW_PARAM_RATE, 48000);
 294 }
 295
 296 static int cht_max98090_headset_init(struct snd_soc_component *component)
 297 {
 298         struct snd_soc_card *card = component->card;
 299         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
 300         struct snd_soc_jack *jack = &ctx->jack;
 301         int jack_type;
 302         int ret;
 303
 304         /*
 305          * TI supports 4 butons headset detection
 306          * KEY_MEDIA
 307          * KEY_VOICECOMMAND
 308          * KEY_VOLUMEUP
 309          * KEY_VOLUMEDOWN
 310          */
 311         jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 312                     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 313                     SND_JACK_BTN_2 | SND_JACK_BTN_3;
 314
 315         ret = snd_soc_card_jack_new(card, "Headset Jack", jack_type,
 316                                     jack, NULL, 0);
 317         if (ret) {
 318                 dev_err(card->dev, "Headset Jack creation failed %d\n", ret);
 319                 return ret;
 320         }
 321
 322         return ts3a227e_enable_jack_detect(component, jack);
 323 }
 324
 325 static const struct snd_soc_ops cht_aif1_ops = {
 326         .startup = cht_aif1_startup,
 327 };
 328
 329 static const struct snd_soc_ops cht_be_ssp2_ops = {
 330         .hw_params = cht_aif1_hw_params,
 331 };
 332
 333 static struct snd_soc_aux_dev cht_max98090_headset_dev = {
 334         .name = "Headset Chip",
 335         .init = cht_max98090_headset_init,
 336         .codec_name = "i2c-104C227E:00",
 337 };
 338
 339 static struct snd_soc_dai_link cht_dailink[] = {
 340         [MERR_DPCM_AUDIO] = {
 341                 .name = "Audio Port",
 342                 .stream_name = "Audio",
 343                 .cpu_dai_name = "media-cpu-dai",
 344                 .codec_dai_name = "snd-soc-dummy-dai",
 345                 .codec_name = "snd-soc-dummy",
 346                 .platform_name = "sst-mfld-platform",
 347                 .nonatomic = true,
 348                 .dynamic = 1,
 349                 .dpcm_playback = 1,
 350                 .dpcm_capture = 1,
 351                 .ops = &cht_aif1_ops,
 352         },
 353         [MERR_DPCM_DEEP_BUFFER] = {
 354                 .name = "Deep-Buffer Audio Port",
 355                 .stream_name = "Deep-Buffer Audio",
 356                 .cpu_dai_name = "deepbuffer-cpu-dai",
 357                 .codec_dai_name = "snd-soc-dummy-dai",
 358                 .codec_name = "snd-soc-dummy",
 359                 .platform_name = "sst-mfld-platform",
 360                 .nonatomic = true,
 361                 .dynamic = 1,
 362                 .dpcm_playback = 1,
 363                 .ops = &cht_aif1_ops,
 364         },
 365         [MERR_DPCM_COMPR] = {
 366                 .name = "Compressed Port",
 367                 .stream_name = "Compress",
 368                 .cpu_dai_name = "compress-cpu-dai",
 369                 .codec_dai_name = "snd-soc-dummy-dai",
 370                 .codec_name = "snd-soc-dummy",
 371                 .platform_name = "sst-mfld-platform",
 372         },
 373         /* back ends */
 374         {
 375                 .name = "SSP2-Codec",
 376                 .id = 1,
 377                 .cpu_dai_name = "ssp2-port",
 378                 .platform_name = "sst-mfld-platform",
 379                 .no_pcm = 1,
 380                 .codec_dai_name = "HiFi",
 381                 .codec_name = "i2c-193C9890:00",
 382                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 383                                         | SND_SOC_DAIFMT_CBS_CFS,
 384                 .init = cht_codec_init,
 385                 .be_hw_params_fixup = cht_codec_fixup,
 386                 .dpcm_playback = 1,
 387                 .dpcm_capture = 1,
 388                 .ops = &cht_be_ssp2_ops,
 389         },
 390 };
 391
 392 /* SoC card */
 393 static struct snd_soc_card snd_soc_card_cht = {
 394         .name = "chtmax98090",
 395         .owner = THIS_MODULE,
 396         .dai_link = cht_dailink,
 397         .num_links = ARRAY_SIZE(cht_dailink),
 398         .aux_dev = &cht_max98090_headset_dev,
 399         .num_aux_devs = 1,
 400         .dapm_widgets = cht_dapm_widgets,
 401         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 402         .dapm_routes = cht_audio_map,
 403         .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
 404         .controls = cht_mc_controls,
 405         .num_controls = ARRAY_SIZE(cht_mc_controls),
 406 };
 407
 408 static int snd_cht_mc_probe(struct platform_device *pdev)
 409 {
 410         struct device *dev = &pdev->dev;
 411         int ret_val = 0;
 412         struct cht_mc_private *drv;
 413
 414         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
 415         if (!drv)
 416                 return -ENOMEM;
 417
 418         drv->ts3a227e_present = acpi_dev_found("104C227E");
 419         if (!drv->ts3a227e_present) {
 420                 /* no need probe TI jack detection chip */
 421                 snd_soc_card_cht.aux_dev = NULL;
 422                 snd_soc_card_cht.num_aux_devs = 0;
 423
 424                 ret_val = devm_acpi_dev_add_driver_gpios(dev->parent,
 425                                                          acpi_max98090_gpios);
 426                 if (ret_val)
 427                         dev_dbg(dev, "Unable to add GPIO mapping table\n");
 428         }
 429
 430         /* register the soc card */
 431         snd_soc_card_cht.dev = &pdev->dev;
 432         snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
 433
 434         drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
 435         if (IS_ERR(drv->mclk)) {
 436                 dev_err(&pdev->dev,
 437                         "Failed to get MCLK from pmc_plt_clk_3: %ld\n",
 438                         PTR_ERR(drv->mclk));
 439                 return PTR_ERR(drv->mclk);
 440         }
 441
 442         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 443         if (ret_val) {
 444                 dev_err(&pdev->dev,
 445                         "snd_soc_register_card failed %d\n", ret_val);
 446                 return ret_val;
 447         }
 448         platform_set_drvdata(pdev, &snd_soc_card_cht);
 449         return ret_val;
 450 }
 451
 452 static struct platform_driver snd_cht_mc_driver = {
 453         .driver = {
 454                 .name = "cht-bsw-max98090",
 455         },
 456         .probe = snd_cht_mc_probe,
 457 };
 458
 459 module_platform_driver(snd_cht_mc_driver)
 460
 461 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
 462 MODULE_AUTHOR("Fang, Yang A <yang.a.fang@intel.com>");
 463 MODULE_LICENSE("GPL v2");
 464 MODULE_ALIAS("platform:cht-bsw-max98090");