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 int platform_clock_control(struct snd_soc_dapm_widget *w,
  45                                           struct snd_kcontrol *k, int  event)
  46 {
  47         struct snd_soc_dapm_context *dapm = w->dapm;
  48         struct snd_soc_card *card = dapm->card;
  49         struct snd_soc_dai *codec_dai;
  50         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
  51         int ret;
  52
  53         codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI);
  54         if (!codec_dai) {
  55                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
  56                 return -EIO;
  57         }
  58
  59         if (SND_SOC_DAPM_EVENT_ON(event)) {
  60                 ret = clk_prepare_enable(ctx->mclk);
  61                 if (ret < 0) {
  62                         dev_err(card->dev,
  63                                 "could not configure MCLK state");
  64                         return ret;
  65                 }
  66         } else {
  67                 clk_disable_unprepare(ctx->mclk);
  68         }
  69
  70         return 0;
  71 }
  72
  73 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
  74         SND_SOC_DAPM_HP("Headphone", NULL),
  75         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  76         SND_SOC_DAPM_MIC("Int Mic", NULL),
  77         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  78         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
  79                             platform_clock_control, SND_SOC_DAPM_PRE_PMU |
  80                             SND_SOC_DAPM_POST_PMD),
  81 };
  82
  83 static const struct snd_soc_dapm_route cht_audio_map[] = {
  84         {"IN34", NULL, "Headset Mic"},
  85         {"Headset Mic", NULL, "MICBIAS"},
  86         {"DMICL", NULL, "Int Mic"},
  87         {"Headphone", NULL, "HPL"},
  88         {"Headphone", NULL, "HPR"},
  89         {"Ext Spk", NULL, "SPKL"},
  90         {"Ext Spk", NULL, "SPKR"},
  91         {"HiFi Playback", NULL, "ssp2 Tx"},
  92         {"ssp2 Tx", NULL, "codec_out0"},
  93         {"ssp2 Tx", NULL, "codec_out1"},
  94         {"codec_in0", NULL, "ssp2 Rx" },
  95         {"codec_in1", NULL, "ssp2 Rx" },
  96         {"ssp2 Rx", NULL, "HiFi Capture"},
  97         {"Headphone", NULL, "Platform Clock"},
  98         {"Headset Mic", NULL, "Platform Clock"},
  99         {"Int Mic", NULL, "Platform Clock"},
 100         {"Ext Spk", NULL, "Platform Clock"},
 101 };
 102
 103 static const struct snd_kcontrol_new cht_mc_controls[] = {
 104         SOC_DAPM_PIN_SWITCH("Headphone"),
 105         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 106         SOC_DAPM_PIN_SWITCH("Int Mic"),
 107         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 108 };
 109
 110 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
 111                              struct snd_pcm_hw_params *params)
 112 {
 113         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 114         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 115         int ret;
 116
 117         ret = snd_soc_dai_set_sysclk(codec_dai, M98090_REG_SYSTEM_CLOCK,
 118                                      CHT_PLAT_CLK_3_HZ, SND_SOC_CLOCK_IN);
 119         if (ret < 0) {
 120                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 121                 return ret;
 122         }
 123
 124         return 0;
 125 }
 126
 127 static int cht_ti_jack_event(struct notifier_block *nb,
 128                 unsigned long event, void *data)
 129 {
 130         struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
 131         struct snd_soc_dapm_context *dapm = &jack->card->dapm;
 132
 133         if (event & SND_JACK_MICROPHONE) {
 134                 snd_soc_dapm_force_enable_pin(dapm, "SHDN");
 135                 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
 136                 snd_soc_dapm_sync(dapm);
 137         } else {
 138                 snd_soc_dapm_disable_pin(dapm, "MICBIAS");
 139                 snd_soc_dapm_disable_pin(dapm, "SHDN");
 140                 snd_soc_dapm_sync(dapm);
 141         }
 142
 143         return 0;
 144 }
 145
 146 static struct notifier_block cht_jack_nb = {
 147         .notifier_call = cht_ti_jack_event,
 148 };
 149
 150 static struct snd_soc_jack_pin hs_jack_pins[] = {
 151         {
 152                 .pin    = "Headphone",
 153                 .mask   = SND_JACK_HEADPHONE,
 154         },
 155         {
 156                 .pin    = "Headset Mic",
 157                 .mask   = SND_JACK_MICROPHONE,
 158         },
 159 };
 160
 161 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 162         {
 163                 .name           = "hp",
 164                 .report         = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
 165                 .debounce_time  = 200,
 166         },
 167         {
 168                 .name           = "mic",
 169                 .invert         = 1,
 170                 .report         = SND_JACK_MICROPHONE,
 171                 .debounce_time  = 200,
 172         },
 173 };
 174
 175 static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
 176 static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
 177
 178 static const struct acpi_gpio_mapping acpi_max98090_gpios[] = {
 179         { "hp-gpios", &hp_gpios, 1 },
 180         { "mic-gpios", &mic_gpios, 1 },
 181         {},
 182 };
 183
 184 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 185 {
 186         int ret;
 187         int jack_type;
 188         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
 189         struct snd_soc_jack *jack = &ctx->jack;
 190
 191         if (ctx->ts3a227e_present) {
 192                 /*
 193                  * The jack has already been created in the
 194                  * cht_max98090_headset_init() function.
 195                  */
 196                 snd_soc_jack_notifier_register(jack, &cht_jack_nb);
 197                 return 0;
 198         }
 199
 200         jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
 201
 202         ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
 203                                     jack_type, jack,
 204                                     hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
 205         if (ret) {
 206                 dev_err(runtime->dev, "Headset Jack creation failed %d\n", ret);
 207                 return ret;
 208         }
 209
 210         ret = snd_soc_jack_add_gpiods(runtime->card->dev->parent, jack,
 211                                       ARRAY_SIZE(hs_jack_gpios),
 212                                       hs_jack_gpios);
 213         if (ret) {
 214                 /*
 215                  * flag error but don't bail if jack detect is broken
 216                  * due to platform issues or bad BIOS/configuration
 217                  */
 218                 dev_err(runtime->dev,
 219                         "jack detection gpios not added, error %d\n", ret);
 220         }
 221
 222         /*
 223          * The firmware might enable the clock at
 224          * boot (this information may or may not
 225          * be reflected in the enable clock register).
 226          * To change the rate we must disable the clock
 227          * first to cover these cases. Due to common
 228          * clock framework restrictions that do not allow
 229          * to disable a clock that has not been enabled,
 230          * we need to enable the clock first.
 231          */
 232         ret = clk_prepare_enable(ctx->mclk);
 233         if (!ret)
 234                 clk_disable_unprepare(ctx->mclk);
 235
 236         ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ);
 237
 238         if (ret)
 239                 dev_err(runtime->dev, "unable to set MCLK rate\n");
 240
 241         return ret;
 242 }
 243
 244 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 245                             struct snd_pcm_hw_params *params)
 246 {
 247         struct snd_interval *rate = hw_param_interval(params,
 248                         SNDRV_PCM_HW_PARAM_RATE);
 249         struct snd_interval *channels = hw_param_interval(params,
 250                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 251         int ret = 0;
 252         unsigned int fmt = 0;
 253
 254         ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
 255         if (ret < 0) {
 256                 dev_err(rtd->dev, "can't set cpu_dai slot fmt: %d\n", ret);
 257                 return ret;
 258         }
 259
 260         fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 261                                 | SND_SOC_DAIFMT_CBS_CFS;
 262
 263         ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
 264         if (ret < 0) {
 265                 dev_err(rtd->dev, "can't set cpu_dai set fmt: %d\n", ret);
 266                 return ret;
 267         }
 268
 269         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 270         rate->min = rate->max = 48000;
 271         channels->min = channels->max = 2;
 272
 273         /* set SSP2 to 16-bit */
 274         params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
 275         return 0;
 276 }
 277
 278 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 279 {
 280         return snd_pcm_hw_constraint_single(substream->runtime,
 281                         SNDRV_PCM_HW_PARAM_RATE, 48000);
 282 }
 283
 284 static int cht_max98090_headset_init(struct snd_soc_component *component)
 285 {
 286         struct snd_soc_card *card = component->card;
 287         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
 288         struct snd_soc_jack *jack = &ctx->jack;
 289         int jack_type;
 290         int ret;
 291
 292         /*
 293          * TI supports 4 butons headset detection
 294          * KEY_MEDIA
 295          * KEY_VOICECOMMAND
 296          * KEY_VOLUMEUP
 297          * KEY_VOLUMEDOWN
 298          */
 299         jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 300                     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 301                     SND_JACK_BTN_2 | SND_JACK_BTN_3;
 302
 303         ret = snd_soc_card_jack_new(card, "Headset Jack", jack_type,
 304                                     jack, NULL, 0);
 305         if (ret) {
 306                 dev_err(card->dev, "Headset Jack creation failed %d\n", ret);
 307                 return ret;
 308         }
 309
 310         return ts3a227e_enable_jack_detect(component, jack);
 311 }
 312
 313 static const struct snd_soc_ops cht_aif1_ops = {
 314         .startup = cht_aif1_startup,
 315 };
 316
 317 static const struct snd_soc_ops cht_be_ssp2_ops = {
 318         .hw_params = cht_aif1_hw_params,
 319 };
 320
 321 static struct snd_soc_aux_dev cht_max98090_headset_dev = {
 322         .name = "Headset Chip",
 323         .init = cht_max98090_headset_init,
 324         .codec_name = "i2c-104C227E:00",
 325 };
 326
 327 static struct snd_soc_dai_link cht_dailink[] = {
 328         [MERR_DPCM_AUDIO] = {
 329                 .name = "Audio Port",
 330                 .stream_name = "Audio",
 331                 .cpu_dai_name = "media-cpu-dai",
 332                 .codec_dai_name = "snd-soc-dummy-dai",
 333                 .codec_name = "snd-soc-dummy",
 334                 .platform_name = "sst-mfld-platform",
 335                 .nonatomic = true,
 336                 .dynamic = 1,
 337                 .dpcm_playback = 1,
 338                 .dpcm_capture = 1,
 339                 .ops = &cht_aif1_ops,
 340         },
 341         [MERR_DPCM_DEEP_BUFFER] = {
 342                 .name = "Deep-Buffer Audio Port",
 343                 .stream_name = "Deep-Buffer Audio",
 344                 .cpu_dai_name = "deepbuffer-cpu-dai",
 345                 .codec_dai_name = "snd-soc-dummy-dai",
 346                 .codec_name = "snd-soc-dummy",
 347                 .platform_name = "sst-mfld-platform",
 348                 .nonatomic = true,
 349                 .dynamic = 1,
 350                 .dpcm_playback = 1,
 351                 .ops = &cht_aif1_ops,
 352         },
 353         /* back ends */
 354         {
 355                 .name = "SSP2-Codec",
 356                 .id = 0,
 357                 .cpu_dai_name = "ssp2-port",
 358                 .platform_name = "sst-mfld-platform",
 359                 .no_pcm = 1,
 360                 .codec_dai_name = "HiFi",
 361                 .codec_name = "i2c-193C9890:00",
 362                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 363                                         | SND_SOC_DAIFMT_CBS_CFS,
 364                 .init = cht_codec_init,
 365                 .be_hw_params_fixup = cht_codec_fixup,
 366                 .dpcm_playback = 1,
 367                 .dpcm_capture = 1,
 368                 .ops = &cht_be_ssp2_ops,
 369         },
 370 };
 371
 372 /* SoC card */
 373 static struct snd_soc_card snd_soc_card_cht = {
 374         .name = "chtmax98090",
 375         .owner = THIS_MODULE,
 376         .dai_link = cht_dailink,
 377         .num_links = ARRAY_SIZE(cht_dailink),
 378         .aux_dev = &cht_max98090_headset_dev,
 379         .num_aux_devs = 1,
 380         .dapm_widgets = cht_dapm_widgets,
 381         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 382         .dapm_routes = cht_audio_map,
 383         .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
 384         .controls = cht_mc_controls,
 385         .num_controls = ARRAY_SIZE(cht_mc_controls),
 386 };
 387
 388 static int snd_cht_mc_probe(struct platform_device *pdev)
 389 {
 390         struct device *dev = &pdev->dev;
 391         int ret_val = 0;
 392         struct cht_mc_private *drv;
 393
 394         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
 395         if (!drv)
 396                 return -ENOMEM;
 397
 398         drv->ts3a227e_present = acpi_dev_found("104C227E");
 399         if (!drv->ts3a227e_present) {
 400                 /* no need probe TI jack detection chip */
 401                 snd_soc_card_cht.aux_dev = NULL;
 402                 snd_soc_card_cht.num_aux_devs = 0;
 403
 404                 ret_val = devm_acpi_dev_add_driver_gpios(dev->parent,
 405                                                          acpi_max98090_gpios);
 406                 if (ret_val)
 407                         dev_dbg(dev, "Unable to add GPIO mapping table\n");
 408         }
 409
 410         /* register the soc card */
 411         snd_soc_card_cht.dev = &pdev->dev;
 412         snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
 413
 414         drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
 415         if (IS_ERR(drv->mclk)) {
 416                 dev_err(&pdev->dev,
 417                         "Failed to get MCLK from pmc_plt_clk_3: %ld\n",
 418                         PTR_ERR(drv->mclk));
 419                 return PTR_ERR(drv->mclk);
 420         }
 421
 422         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 423         if (ret_val) {
 424                 dev_err(&pdev->dev,
 425                         "snd_soc_register_card failed %d\n", ret_val);
 426                 return ret_val;
 427         }
 428         platform_set_drvdata(pdev, &snd_soc_card_cht);
 429         return ret_val;
 430 }
 431
 432 static struct platform_driver snd_cht_mc_driver = {
 433         .driver = {
 434                 .name = "cht-bsw-max98090",
 435         },
 436         .probe = snd_cht_mc_probe,
 437 };
 438
 439 module_platform_driver(snd_cht_mc_driver)
 440
 441 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
 442 MODULE_AUTHOR("Fang, Yang A <yang.a.fang@intel.com>");
 443 MODULE_LICENSE("GPL v2");
 444 MODULE_ALIAS("platform:cht-bsw-max98090");