sound/soc/intel/boards/cht_bsw_rt5645.c

   1 /*
   2  *  cht-bsw-rt5645.c - ASoc Machine driver for Intel Cherryview-based platforms
   3  *                     Cherrytrail and Braswell, with RT5645 codec.
   4  *
   5  *  Copyright (C) 2015 Intel Corp
   6  *  Author: Fang, Yang A <yang.a.fang@intel.com>
   7  *              N,Harshapriya <harshapriya.n@intel.com>
   8  *  This file is modified from cht_bsw_rt5672.c
   9  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; version 2 of the License.
  14  *
  15  *  This program is distributed in the hope that it will be useful, but
  16  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  *  General Public License for more details.
  19  *
  20  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/acpi.h>
  26 #include <linux/clk.h>
  27 #include <linux/dmi.h>
  28 #include <linux/slab.h>
  29 #include <asm/cpu_device_id.h>
  30 #include <asm/platform_sst_audio.h>
  31 #include <sound/pcm.h>
  32 #include <sound/pcm_params.h>
  33 #include <sound/soc.h>
  34 #include <sound/jack.h>
  35 #include "../../codecs/rt5645.h"
  36 #include "../atom/sst-atom-controls.h"
  37 #include "../common/sst-acpi.h"
  38
  39 #define CHT_PLAT_CLK_3_HZ       19200000
  40 #define CHT_CODEC_DAI1  "rt5645-aif1"
  41 #define CHT_CODEC_DAI2  "rt5645-aif2"
  42
  43 struct cht_acpi_card {
  44         char *codec_id;
  45         int codec_type;
  46         struct snd_soc_card *soc_card;
  47 };
  48
  49 struct cht_mc_private {
  50         struct snd_soc_jack jack;
  51         struct cht_acpi_card *acpi_card;
  52         char codec_name[16];
  53         struct clk *mclk;
  54 };
  55
  56 #define CHT_RT5645_MAP(quirk)   ((quirk) & GENMASK(7, 0))
  57 #define CHT_RT5645_SSP2_AIF2     BIT(16) /* default is using AIF1  */
  58 #define CHT_RT5645_SSP0_AIF1     BIT(17)
  59 #define CHT_RT5645_SSP0_AIF2     BIT(18)
  60
  61 static unsigned long cht_rt5645_quirk = 0;
  62
  63 static void log_quirks(struct device *dev)
  64 {
  65         if (cht_rt5645_quirk & CHT_RT5645_SSP2_AIF2)
  66                 dev_info(dev, "quirk SSP2_AIF2 enabled");
  67         if (cht_rt5645_quirk & CHT_RT5645_SSP0_AIF1)
  68                 dev_info(dev, "quirk SSP0_AIF1 enabled");
  69         if (cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2)
  70                 dev_info(dev, "quirk SSP0_AIF2 enabled");
  71 }
  72
  73 static int platform_clock_control(struct snd_soc_dapm_widget *w,
  74                 struct snd_kcontrol *k, int  event)
  75 {
  76         struct snd_soc_dapm_context *dapm = w->dapm;
  77         struct snd_soc_card *card = dapm->card;
  78         struct snd_soc_dai *codec_dai;
  79         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
  80         int ret;
  81
  82         codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI1);
  83         if (!codec_dai)
  84                 codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI2);
  85
  86         if (!codec_dai) {
  87                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
  88                 return -EIO;
  89         }
  90
  91         if (SND_SOC_DAPM_EVENT_ON(event)) {
  92                 ret = clk_prepare_enable(ctx->mclk);
  93                 if (ret < 0) {
  94                         dev_err(card->dev,
  95                                 "could not configure MCLK state");
  96                         return ret;
  97                 }
  98         } else {
  99                 /* Set codec sysclk source to its internal clock because codec PLL will
 100                  * be off when idle and MCLK will also be off when codec is
 101                  * runtime suspended. Codec needs clock for jack detection and button
 102                  * press. MCLK is turned off with clock framework or ACPI.
 103                  */
 104                 ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_RCCLK,
 105                                         48000 * 512, SND_SOC_CLOCK_IN);
 106                 if (ret < 0) {
 107                         dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
 108                         return ret;
 109                 }
 110
 111                 clk_disable_unprepare(ctx->mclk);
 112         }
 113
 114         return 0;
 115 }
 116
 117 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
 118         SND_SOC_DAPM_HP("Headphone", NULL),
 119         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 120         SND_SOC_DAPM_MIC("Int Mic", NULL),
 121         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 122         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
 123                         platform_clock_control, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 124 };
 125
 126 static const struct snd_soc_dapm_route cht_rt5645_audio_map[] = {
 127         {"IN1P", NULL, "Headset Mic"},
 128         {"IN1N", NULL, "Headset Mic"},
 129         {"DMIC L1", NULL, "Int Mic"},
 130         {"DMIC R1", NULL, "Int Mic"},
 131         {"Headphone", NULL, "HPOL"},
 132         {"Headphone", NULL, "HPOR"},
 133         {"Ext Spk", NULL, "SPOL"},
 134         {"Ext Spk", NULL, "SPOR"},
 135         {"Headphone", NULL, "Platform Clock"},
 136         {"Headset Mic", NULL, "Platform Clock"},
 137         {"Int Mic", NULL, "Platform Clock"},
 138         {"Ext Spk", NULL, "Platform Clock"},
 139 };
 140
 141 static const struct snd_soc_dapm_route cht_rt5650_audio_map[] = {
 142         {"IN1P", NULL, "Headset Mic"},
 143         {"IN1N", NULL, "Headset Mic"},
 144         {"DMIC L2", NULL, "Int Mic"},
 145         {"DMIC R2", NULL, "Int Mic"},
 146         {"Headphone", NULL, "HPOL"},
 147         {"Headphone", NULL, "HPOR"},
 148         {"Ext Spk", NULL, "SPOL"},
 149         {"Ext Spk", NULL, "SPOR"},
 150         {"Headphone", NULL, "Platform Clock"},
 151         {"Headset Mic", NULL, "Platform Clock"},
 152         {"Int Mic", NULL, "Platform Clock"},
 153         {"Ext Spk", NULL, "Platform Clock"},
 154 };
 155
 156 static const struct snd_soc_dapm_route cht_rt5645_ssp2_aif1_map[] = {
 157         {"AIF1 Playback", NULL, "ssp2 Tx"},
 158         {"ssp2 Tx", NULL, "codec_out0"},
 159         {"ssp2 Tx", NULL, "codec_out1"},
 160         {"codec_in0", NULL, "ssp2 Rx" },
 161         {"codec_in1", NULL, "ssp2 Rx" },
 162         {"ssp2 Rx", NULL, "AIF1 Capture"},
 163 };
 164
 165 static const struct snd_soc_dapm_route cht_rt5645_ssp2_aif2_map[] = {
 166         {"AIF2 Playback", NULL, "ssp2 Tx"},
 167         {"ssp2 Tx", NULL, "codec_out0"},
 168         {"ssp2 Tx", NULL, "codec_out1"},
 169         {"codec_in0", NULL, "ssp2 Rx" },
 170         {"codec_in1", NULL, "ssp2 Rx" },
 171         {"ssp2 Rx", NULL, "AIF2 Capture"},
 172 };
 173
 174 static const struct snd_soc_dapm_route cht_rt5645_ssp0_aif1_map[] = {
 175         {"AIF1 Playback", NULL, "ssp0 Tx"},
 176         {"ssp0 Tx", NULL, "modem_out"},
 177         {"modem_in", NULL, "ssp0 Rx" },
 178         {"ssp0 Rx", NULL, "AIF1 Capture"},
 179 };
 180
 181 static const struct snd_soc_dapm_route cht_rt5645_ssp0_aif2_map[] = {
 182         {"AIF2 Playback", NULL, "ssp0 Tx"},
 183         {"ssp0 Tx", NULL, "modem_out"},
 184         {"modem_in", NULL, "ssp0 Rx" },
 185         {"ssp0 Rx", NULL, "AIF2 Capture"},
 186 };
 187
 188 static const struct snd_kcontrol_new cht_mc_controls[] = {
 189         SOC_DAPM_PIN_SWITCH("Headphone"),
 190         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 191         SOC_DAPM_PIN_SWITCH("Int Mic"),
 192         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 193 };
 194
 195 static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
 196         {
 197                 .pin    = "Headphone",
 198                 .mask   = SND_JACK_HEADPHONE,
 199         },
 200         {
 201                 .pin    = "Headset Mic",
 202                 .mask   = SND_JACK_MICROPHONE,
 203         },
 204 };
 205
 206 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
 207                              struct snd_pcm_hw_params *params)
 208 {
 209         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 210         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 211         int ret;
 212
 213         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
 214         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
 215                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
 216         if (ret < 0) {
 217                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 218                 return ret;
 219         }
 220
 221         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1,
 222                                 params_rate(params) * 512, SND_SOC_CLOCK_IN);
 223         if (ret < 0) {
 224                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 225                 return ret;
 226         }
 227
 228         return 0;
 229 }
 230
 231 /* uncomment when we have a real quirk
 232 static int cht_rt5645_quirk_cb(const struct dmi_system_id *id)
 233 {
 234         cht_rt5645_quirk = (unsigned long)id->driver_data;
 235         return 1;
 236 }
 237 */
 238
 239 static const struct dmi_system_id cht_rt5645_quirk_table[] = {
 240         {
 241         },
 242 };
 243
 244 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 245 {
 246         struct snd_soc_card *card = runtime->card;
 247         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
 248         struct snd_soc_codec *codec = runtime->codec;
 249         int jack_type;
 250         int ret;
 251
 252         if ((cht_rt5645_quirk & CHT_RT5645_SSP2_AIF2) ||
 253             (cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2)) {
 254                 /* Select clk_i2s2_asrc as ASRC clock source */
 255                 rt5645_sel_asrc_clk_src(codec,
 256                                         RT5645_DA_STEREO_FILTER |
 257                                         RT5645_DA_MONO_L_FILTER |
 258                                         RT5645_DA_MONO_R_FILTER |
 259                                         RT5645_AD_STEREO_FILTER,
 260                                         RT5645_CLK_SEL_I2S2_ASRC);
 261         } else {
 262                 /* Select clk_i2s1_asrc as ASRC clock source */
 263                 rt5645_sel_asrc_clk_src(codec,
 264                                         RT5645_DA_STEREO_FILTER |
 265                                         RT5645_DA_MONO_L_FILTER |
 266                                         RT5645_DA_MONO_R_FILTER |
 267                                         RT5645_AD_STEREO_FILTER,
 268                                         RT5645_CLK_SEL_I2S1_ASRC);
 269         }
 270
 271         if (cht_rt5645_quirk & CHT_RT5645_SSP2_AIF2) {
 272                 ret = snd_soc_dapm_add_routes(&card->dapm,
 273                                         cht_rt5645_ssp2_aif2_map,
 274                                         ARRAY_SIZE(cht_rt5645_ssp2_aif2_map));
 275         } else if (cht_rt5645_quirk & CHT_RT5645_SSP0_AIF1) {
 276                 ret = snd_soc_dapm_add_routes(&card->dapm,
 277                                         cht_rt5645_ssp0_aif1_map,
 278                                         ARRAY_SIZE(cht_rt5645_ssp0_aif1_map));
 279         } else if (cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2) {
 280                 ret = snd_soc_dapm_add_routes(&card->dapm,
 281                                         cht_rt5645_ssp0_aif2_map,
 282                                         ARRAY_SIZE(cht_rt5645_ssp0_aif2_map));
 283         } else {
 284                 ret = snd_soc_dapm_add_routes(&card->dapm,
 285                                         cht_rt5645_ssp2_aif1_map,
 286                                         ARRAY_SIZE(cht_rt5645_ssp2_aif1_map));
 287         }
 288         if (ret)
 289                 return ret;
 290
 291         if (ctx->acpi_card->codec_type == CODEC_TYPE_RT5650)
 292                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 293                                         SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 294                                         SND_JACK_BTN_2 | SND_JACK_BTN_3;
 295         else
 296                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
 297
 298         ret = snd_soc_card_jack_new(runtime->card, "Headset",
 299                                     jack_type, &ctx->jack,
 300                                     cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
 301         if (ret) {
 302                 dev_err(runtime->dev, "Headset jack creation failed %d\n", ret);
 303                 return ret;
 304         }
 305
 306         rt5645_set_jack_detect(codec, &ctx->jack, &ctx->jack, &ctx->jack);
 307
 308
 309         /*
 310          * The firmware might enable the clock at
 311          * boot (this information may or may not
 312          * be reflected in the enable clock register).
 313          * To change the rate we must disable the clock
 314          * first to cover these cases. Due to common
 315          * clock framework restrictions that do not allow
 316          * to disable a clock that has not been enabled,
 317          * we need to enable the clock first.
 318          */
 319         ret = clk_prepare_enable(ctx->mclk);
 320         if (!ret)
 321                 clk_disable_unprepare(ctx->mclk);
 322
 323         ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ);
 324
 325         if (ret)
 326                 dev_err(runtime->dev, "unable to set MCLK rate\n");
 327
 328         return ret;
 329 }
 330
 331 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 332                             struct snd_pcm_hw_params *params)
 333 {
 334         int ret;
 335         struct snd_interval *rate = hw_param_interval(params,
 336                         SNDRV_PCM_HW_PARAM_RATE);
 337         struct snd_interval *channels = hw_param_interval(params,
 338                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 339
 340         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 341         rate->min = rate->max = 48000;
 342         channels->min = channels->max = 2;
 343
 344         if ((cht_rt5645_quirk & CHT_RT5645_SSP0_AIF1) ||
 345                 (cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2)) {
 346
 347                 /* set SSP0 to 16-bit */
 348                 params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
 349
 350                 /*
 351                  * Default mode for SSP configuration is TDM 4 slot, override config
 352                  * with explicit setting to I2S 2ch 16-bit. The word length is set with
 353                  * dai_set_tdm_slot() since there is no other API exposed
 354                  */
 355                 ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
 356                                         SND_SOC_DAIFMT_I2S     |
 357                                         SND_SOC_DAIFMT_NB_NF   |
 358                                         SND_SOC_DAIFMT_CBS_CFS
 359                         );
 360                 if (ret < 0) {
 361                         dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
 362                         return ret;
 363                 }
 364
 365                 ret = snd_soc_dai_set_fmt(rtd->codec_dai,
 366                                         SND_SOC_DAIFMT_I2S     |
 367                                         SND_SOC_DAIFMT_NB_NF   |
 368                                         SND_SOC_DAIFMT_CBS_CFS
 369                         );
 370                 if (ret < 0) {
 371                         dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
 372                         return ret;
 373                 }
 374
 375                 ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
 376                 if (ret < 0) {
 377                         dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
 378                         return ret;
 379                 }
 380
 381         } else {
 382
 383                 /* set SSP2 to 24-bit */
 384                 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 385
 386                 /*
 387                  * Default mode for SSP configuration is TDM 4 slot
 388                  */
 389                 ret = snd_soc_dai_set_fmt(rtd->codec_dai,
 390                                         SND_SOC_DAIFMT_DSP_B |
 391                                         SND_SOC_DAIFMT_IB_NF |
 392                                         SND_SOC_DAIFMT_CBS_CFS);
 393                 if (ret < 0) {
 394                         dev_err(rtd->dev, "can't set format to TDM %d\n", ret);
 395                         return ret;
 396                 }
 397
 398                 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
 399                 ret = snd_soc_dai_set_tdm_slot(rtd->codec_dai, 0xF, 0xF, 4, 24);
 400                 if (ret < 0) {
 401                         dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret);
 402                         return ret;
 403                 }
 404         }
 405         return 0;
 406 }
 407
 408 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 409 {
 410         return snd_pcm_hw_constraint_single(substream->runtime,
 411                         SNDRV_PCM_HW_PARAM_RATE, 48000);
 412 }
 413
 414 static const struct snd_soc_ops cht_aif1_ops = {
 415         .startup = cht_aif1_startup,
 416 };
 417
 418 static const struct snd_soc_ops cht_be_ssp2_ops = {
 419         .hw_params = cht_aif1_hw_params,
 420 };
 421
 422 static struct snd_soc_dai_link cht_dailink[] = {
 423         [MERR_DPCM_AUDIO] = {
 424                 .name = "Audio Port",
 425                 .stream_name = "Audio",
 426                 .cpu_dai_name = "media-cpu-dai",
 427                 .codec_dai_name = "snd-soc-dummy-dai",
 428                 .codec_name = "snd-soc-dummy",
 429                 .platform_name = "sst-mfld-platform",
 430                 .nonatomic = true,
 431                 .dynamic = 1,
 432                 .dpcm_playback = 1,
 433                 .dpcm_capture = 1,
 434                 .ops = &cht_aif1_ops,
 435         },
 436         [MERR_DPCM_DEEP_BUFFER] = {
 437                 .name = "Deep-Buffer Audio Port",
 438                 .stream_name = "Deep-Buffer Audio",
 439                 .cpu_dai_name = "deepbuffer-cpu-dai",
 440                 .codec_dai_name = "snd-soc-dummy-dai",
 441                 .codec_name = "snd-soc-dummy",
 442                 .platform_name = "sst-mfld-platform",
 443                 .nonatomic = true,
 444                 .dynamic = 1,
 445                 .dpcm_playback = 1,
 446                 .ops = &cht_aif1_ops,
 447         },
 448         [MERR_DPCM_COMPR] = {
 449                 .name = "Compressed Port",
 450                 .stream_name = "Compress",
 451                 .cpu_dai_name = "compress-cpu-dai",
 452                 .codec_dai_name = "snd-soc-dummy-dai",
 453                 .codec_name = "snd-soc-dummy",
 454                 .platform_name = "sst-mfld-platform",
 455         },
 456         /* CODEC<->CODEC link */
 457         /* back ends */
 458         {
 459                 .name = "SSP2-Codec",
 460                 .id = 0,
 461                 .cpu_dai_name = "ssp2-port",
 462                 .platform_name = "sst-mfld-platform",
 463                 .no_pcm = 1,
 464                 .codec_dai_name = "rt5645-aif1",
 465                 .codec_name = "i2c-10EC5645:00",
 466                 .init = cht_codec_init,
 467                 .be_hw_params_fixup = cht_codec_fixup,
 468                 .nonatomic = true,
 469                 .dpcm_playback = 1,
 470                 .dpcm_capture = 1,
 471                 .ops = &cht_be_ssp2_ops,
 472         },
 473 };
 474
 475 /* SoC card */
 476 static struct snd_soc_card snd_soc_card_chtrt5645 = {
 477         .name = "chtrt5645",
 478         .owner = THIS_MODULE,
 479         .dai_link = cht_dailink,
 480         .num_links = ARRAY_SIZE(cht_dailink),
 481         .dapm_widgets = cht_dapm_widgets,
 482         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 483         .dapm_routes = cht_rt5645_audio_map,
 484         .num_dapm_routes = ARRAY_SIZE(cht_rt5645_audio_map),
 485         .controls = cht_mc_controls,
 486         .num_controls = ARRAY_SIZE(cht_mc_controls),
 487 };
 488
 489 static struct snd_soc_card snd_soc_card_chtrt5650 = {
 490         .name = "chtrt5650",
 491         .owner = THIS_MODULE,
 492         .dai_link = cht_dailink,
 493         .num_links = ARRAY_SIZE(cht_dailink),
 494         .dapm_widgets = cht_dapm_widgets,
 495         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 496         .dapm_routes = cht_rt5650_audio_map,
 497         .num_dapm_routes = ARRAY_SIZE(cht_rt5650_audio_map),
 498         .controls = cht_mc_controls,
 499         .num_controls = ARRAY_SIZE(cht_mc_controls),
 500 };
 501
 502 static struct cht_acpi_card snd_soc_cards[] = {
 503         {"10EC5640", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
 504         {"10EC5645", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
 505         {"10EC5648", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
 506         {"10EC3270", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
 507         {"10EC5650", CODEC_TYPE_RT5650, &snd_soc_card_chtrt5650},
 508 };
 509
 510 static char cht_rt5645_codec_name[16]; /* i2c-<HID>:00 with HID being 8 chars */
 511 static char cht_rt5645_codec_aif_name[12]; /*  = "rt5645-aif[1|2]" */
 512 static char cht_rt5645_cpu_dai_name[10]; /*  = "ssp[0|2]-port" */
 513
 514 static bool is_valleyview(void)
 515 {
 516         static const struct x86_cpu_id cpu_ids[] = {
 517                 { X86_VENDOR_INTEL, 6, 55 }, /* Valleyview, Bay Trail */
 518                 {}
 519         };
 520
 521         if (!x86_match_cpu(cpu_ids))
 522                 return false;
 523         return true;
 524 }
 525
 526 struct acpi_chan_package {   /* ACPICA seems to require 64 bit integers */
 527         u64 aif_value;       /* 1: AIF1, 2: AIF2 */
 528         u64 mclock_value;    /* usually 25MHz (0x17d7940), ignored */
 529 };
 530
 531 static int snd_cht_mc_probe(struct platform_device *pdev)
 532 {
 533         struct snd_soc_card *card = snd_soc_cards[0].soc_card;
 534         struct sst_acpi_mach *mach;
 535         struct cht_mc_private *drv;
 536         const char *i2c_name = NULL;
 537         bool found = false;
 538         bool is_bytcr = false;
 539         int dai_index = 0;
 540         int ret_val = 0;
 541         int i;
 542
 543         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
 544         if (!drv)
 545                 return -ENOMEM;
 546
 547         mach = (&pdev->dev)->platform_data;
 548
 549         for (i = 0; i < ARRAY_SIZE(snd_soc_cards); i++) {
 550                 if (acpi_dev_found(snd_soc_cards[i].codec_id) &&
 551                         (!strncmp(snd_soc_cards[i].codec_id, mach->id, 8))) {
 552                         dev_dbg(&pdev->dev,
 553                                 "found codec %s\n", snd_soc_cards[i].codec_id);
 554                         card = snd_soc_cards[i].soc_card;
 555                         drv->acpi_card = &snd_soc_cards[i];
 556                         found = true;
 557                         break;
 558                 }
 559         }
 560
 561         if (!found) {
 562                 dev_err(&pdev->dev, "No matching HID found in supported list\n");
 563                 return -ENODEV;
 564         }
 565
 566         card->dev = &pdev->dev;
 567         sprintf(drv->codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
 568
 569         /* set correct codec name */
 570         for (i = 0; i < ARRAY_SIZE(cht_dailink); i++)
 571                 if (!strcmp(card->dai_link[i].codec_name, "i2c-10EC5645:00")) {
 572                         card->dai_link[i].codec_name = drv->codec_name;
 573                         dai_index = i;
 574                 }
 575
 576         /* fixup codec name based on HID */
 577         i2c_name = sst_acpi_find_name_from_hid(mach->id);
 578         if (i2c_name) {
 579                 snprintf(cht_rt5645_codec_name, sizeof(cht_rt5645_codec_name),
 580                         "%s%s", "i2c-", i2c_name);
 581                 cht_dailink[dai_index].codec_name = cht_rt5645_codec_name;
 582         }
 583
 584         /*
 585          * swap SSP0 if bytcr is detected
 586          * (will be overridden if DMI quirk is detected)
 587          */
 588         if (is_valleyview()) {
 589                 struct sst_platform_info *p_info = mach->pdata;
 590                 const struct sst_res_info *res_info = p_info->res_info;
 591
 592                 if (res_info->acpi_ipc_irq_index == 0)
 593                         is_bytcr = true;
 594         }
 595
 596         if (is_bytcr) {
 597                 /*
 598                  * Baytrail CR platforms may have CHAN package in BIOS, try
 599                  * to find relevant routing quirk based as done on Windows
 600                  * platforms. We have to read the information directly from the
 601                  * BIOS, at this stage the card is not created and the links
 602                  * with the codec driver/pdata are non-existent
 603                  */
 604
 605                 struct acpi_chan_package chan_package;
 606
 607                 /* format specified: 2 64-bit integers */
 608                 struct acpi_buffer format = {sizeof("NN"), "NN"};
 609                 struct acpi_buffer state = {0, NULL};
 610                 struct sst_acpi_package_context pkg_ctx;
 611                 bool pkg_found = false;
 612
 613                 state.length = sizeof(chan_package);
 614                 state.pointer = &chan_package;
 615
 616                 pkg_ctx.name = "CHAN";
 617                 pkg_ctx.length = 2;
 618                 pkg_ctx.format = &format;
 619                 pkg_ctx.state = &state;
 620                 pkg_ctx.data_valid = false;
 621
 622                 pkg_found = sst_acpi_find_package_from_hid(mach->id, &pkg_ctx);
 623                 if (pkg_found) {
 624                         if (chan_package.aif_value == 1) {
 625                                 dev_info(&pdev->dev, "BIOS Routing: AIF1 connected\n");
 626                                 cht_rt5645_quirk |= CHT_RT5645_SSP0_AIF1;
 627                         } else  if (chan_package.aif_value == 2) {
 628                                 dev_info(&pdev->dev, "BIOS Routing: AIF2 connected\n");
 629                                 cht_rt5645_quirk |= CHT_RT5645_SSP0_AIF2;
 630                         } else {
 631                                 dev_info(&pdev->dev, "BIOS Routing isn't valid, ignored\n");
 632                                 pkg_found = false;
 633                         }
 634                 }
 635
 636                 if (!pkg_found) {
 637                         /* no BIOS indications, assume SSP0-AIF2 connection */
 638                         cht_rt5645_quirk |= CHT_RT5645_SSP0_AIF2;
 639                 }
 640         }
 641
 642         /* check quirks before creating card */
 643         dmi_check_system(cht_rt5645_quirk_table);
 644         log_quirks(&pdev->dev);
 645
 646         if ((cht_rt5645_quirk & CHT_RT5645_SSP2_AIF2) ||
 647                 (cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2)) {
 648
 649                 /* fixup codec aif name */
 650                 snprintf(cht_rt5645_codec_aif_name,
 651                         sizeof(cht_rt5645_codec_aif_name),
 652                         "%s", "rt5645-aif2");
 653
 654                 cht_dailink[dai_index].codec_dai_name =
 655                         cht_rt5645_codec_aif_name;
 656         }
 657
 658         if ((cht_rt5645_quirk & CHT_RT5645_SSP0_AIF1) ||
 659                 (cht_rt5645_quirk & CHT_RT5645_SSP0_AIF2)) {
 660
 661                 /* fixup cpu dai name name */
 662                 snprintf(cht_rt5645_cpu_dai_name,
 663                         sizeof(cht_rt5645_cpu_dai_name),
 664                         "%s", "ssp0-port");
 665
 666                 cht_dailink[dai_index].cpu_dai_name =
 667                         cht_rt5645_cpu_dai_name;
 668         }
 669
 670         drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
 671         if (IS_ERR(drv->mclk)) {
 672                 dev_err(&pdev->dev,
 673                         "Failed to get MCLK from pmc_plt_clk_3: %ld\n",
 674                         PTR_ERR(drv->mclk));
 675                 return PTR_ERR(drv->mclk);
 676         }
 677
 678         snd_soc_card_set_drvdata(card, drv);
 679         ret_val = devm_snd_soc_register_card(&pdev->dev, card);
 680         if (ret_val) {
 681                 dev_err(&pdev->dev,
 682                         "snd_soc_register_card failed %d\n", ret_val);
 683                 return ret_val;
 684         }
 685         platform_set_drvdata(pdev, card);
 686         return ret_val;
 687 }
 688
 689 static struct platform_driver snd_cht_mc_driver = {
 690         .driver = {
 691                 .name = "cht-bsw-rt5645",
 692         },
 693         .probe = snd_cht_mc_probe,
 694 };
 695
 696 module_platform_driver(snd_cht_mc_driver)
 697
 698 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
 699 MODULE_AUTHOR("Fang, Yang A,N,Harshapriya");
 700 MODULE_LICENSE("GPL v2");
 701 MODULE_ALIAS("platform:cht-bsw-rt5645");