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/acpi.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/slab.h>
  27 #include <asm/cpu_device_id.h>
  28 #include <asm/platform_sst_audio.h>
  29 #include <linux/clk.h>
  30 #include <sound/pcm.h>
  31 #include <sound/pcm_params.h>
  32 #include <sound/soc.h>
  33 #include <sound/jack.h>
  34 #include "../../codecs/rt5645.h"
  35 #include "../atom/sst-atom-controls.h"
  36 #include "../common/sst-acpi.h"
  37
  38 #define CHT_PLAT_CLK_3_HZ       19200000
  39 #define CHT_CODEC_DAI   "rt5645-aif1"
  40
  41 struct cht_acpi_card {
  42         char *codec_id;
  43         int codec_type;
  44         struct snd_soc_card *soc_card;
  45 };
  46
  47 struct cht_mc_private {
  48         struct snd_soc_jack jack;
  49         struct cht_acpi_card *acpi_card;
  50         char codec_name[16];
  51         struct clk *mclk;
  52 };
  53
  54 static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
  55 {
  56         struct snd_soc_pcm_runtime *rtd;
  57
  58         list_for_each_entry(rtd, &card->rtd_list, list) {
  59                 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
  60                              strlen(CHT_CODEC_DAI)))
  61                         return rtd->codec_dai;
  62         }
  63         return NULL;
  64 }
  65
  66 static int platform_clock_control(struct snd_soc_dapm_widget *w,
  67                 struct snd_kcontrol *k, int  event)
  68 {
  69         struct snd_soc_dapm_context *dapm = w->dapm;
  70         struct snd_soc_card *card = dapm->card;
  71         struct snd_soc_dai *codec_dai;
  72         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
  73         int ret;
  74
  75         codec_dai = cht_get_codec_dai(card);
  76         if (!codec_dai) {
  77                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
  78                 return -EIO;
  79         }
  80
  81         if (SND_SOC_DAPM_EVENT_ON(event)) {
  82                 if (ctx->mclk) {
  83                         ret = clk_prepare_enable(ctx->mclk);
  84                         if (ret < 0) {
  85                                 dev_err(card->dev,
  86                                         "could not configure MCLK state");
  87                                 return ret;
  88                         }
  89                 }
  90         } else {
  91                 /* Set codec sysclk source to its internal clock because codec PLL will
  92                  * be off when idle and MCLK will also be off when codec is
  93                  * runtime suspended. Codec needs clock for jack detection and button
  94                  * press. MCLK is turned off with clock framework or ACPI.
  95                  */
  96                 ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_RCCLK,
  97                                         48000 * 512, SND_SOC_CLOCK_IN);
  98                 if (ret < 0) {
  99                         dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
 100                         return ret;
 101                 }
 102
 103                 if (ctx->mclk)
 104                         clk_disable_unprepare(ctx->mclk);
 105         }
 106
 107         return 0;
 108 }
 109
 110 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
 111         SND_SOC_DAPM_HP("Headphone", NULL),
 112         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 113         SND_SOC_DAPM_MIC("Int Mic", NULL),
 114         SND_SOC_DAPM_MIC("Int Analog Mic", NULL),
 115         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 116         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
 117                         platform_clock_control, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 118 };
 119
 120 static const struct snd_soc_dapm_route cht_rt5645_audio_map[] = {
 121         {"IN1P", NULL, "Headset Mic"},
 122         {"IN1N", NULL, "Headset Mic"},
 123         {"DMIC L1", NULL, "Int Mic"},
 124         {"DMIC R1", NULL, "Int Mic"},
 125         {"IN2P", NULL, "Int Analog Mic"},
 126         {"IN2N", NULL, "Int Analog Mic"},
 127         {"Headphone", NULL, "HPOL"},
 128         {"Headphone", NULL, "HPOR"},
 129         {"Ext Spk", NULL, "SPOL"},
 130         {"Ext Spk", NULL, "SPOR"},
 131         {"AIF1 Playback", NULL, "ssp2 Tx"},
 132         {"ssp2 Tx", NULL, "codec_out0"},
 133         {"ssp2 Tx", NULL, "codec_out1"},
 134         {"codec_in0", NULL, "ssp2 Rx" },
 135         {"codec_in1", NULL, "ssp2 Rx" },
 136         {"ssp2 Rx", NULL, "AIF1 Capture"},
 137         {"Headphone", NULL, "Platform Clock"},
 138         {"Headset Mic", NULL, "Platform Clock"},
 139         {"Int Mic", NULL, "Platform Clock"},
 140         {"Int Analog Mic", NULL, "Platform Clock"},
 141         {"Int Analog Mic", NULL, "micbias1"},
 142         {"Int Analog Mic", NULL, "micbias2"},
 143         {"Ext Spk", NULL, "Platform Clock"},
 144 };
 145
 146 static const struct snd_soc_dapm_route cht_rt5650_audio_map[] = {
 147         {"IN1P", NULL, "Headset Mic"},
 148         {"IN1N", NULL, "Headset Mic"},
 149         {"DMIC L2", NULL, "Int Mic"},
 150         {"DMIC R2", NULL, "Int Mic"},
 151         {"Headphone", NULL, "HPOL"},
 152         {"Headphone", NULL, "HPOR"},
 153         {"Ext Spk", NULL, "SPOL"},
 154         {"Ext Spk", NULL, "SPOR"},
 155         {"AIF1 Playback", NULL, "ssp2 Tx"},
 156         {"ssp2 Tx", NULL, "codec_out0"},
 157         {"ssp2 Tx", NULL, "codec_out1"},
 158         {"codec_in0", NULL, "ssp2 Rx" },
 159         {"codec_in1", NULL, "ssp2 Rx" },
 160         {"ssp2 Rx", NULL, "AIF1 Capture"},
 161         {"Headphone", NULL, "Platform Clock"},
 162         {"Headset Mic", NULL, "Platform Clock"},
 163         {"Int Mic", NULL, "Platform Clock"},
 164         {"Ext Spk", NULL, "Platform Clock"},
 165 };
 166
 167 static const struct snd_kcontrol_new cht_mc_controls[] = {
 168         SOC_DAPM_PIN_SWITCH("Headphone"),
 169         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 170         SOC_DAPM_PIN_SWITCH("Int Mic"),
 171         SOC_DAPM_PIN_SWITCH("Int Analog Mic"),
 172         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 173 };
 174
 175 static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
 176         {
 177                 .pin    = "Headphone",
 178                 .mask   = SND_JACK_HEADPHONE,
 179         },
 180         {
 181                 .pin    = "Headset Mic",
 182                 .mask   = SND_JACK_MICROPHONE,
 183         },
 184 };
 185
 186 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
 187                              struct snd_pcm_hw_params *params)
 188 {
 189         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 190         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 191         int ret;
 192
 193         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
 194         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
 195                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
 196         if (ret < 0) {
 197                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 198                 return ret;
 199         }
 200
 201         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1,
 202                                 params_rate(params) * 512, SND_SOC_CLOCK_IN);
 203         if (ret < 0) {
 204                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 205                 return ret;
 206         }
 207
 208         return 0;
 209 }
 210
 211 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 212 {
 213         int ret;
 214         int jack_type;
 215         struct snd_soc_codec *codec = runtime->codec;
 216         struct snd_soc_dai *codec_dai = runtime->codec_dai;
 217         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
 218
 219         /* Select clk_i2s1_asrc as ASRC clock source */
 220         rt5645_sel_asrc_clk_src(codec,
 221                                 RT5645_DA_STEREO_FILTER |
 222                                 RT5645_DA_MONO_L_FILTER |
 223                                 RT5645_DA_MONO_R_FILTER |
 224                                 RT5645_AD_STEREO_FILTER,
 225                                 RT5645_CLK_SEL_I2S1_ASRC);
 226
 227         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
 228         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
 229         if (ret < 0) {
 230                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
 231                 return ret;
 232         }
 233
 234         if (ctx->acpi_card->codec_type == CODEC_TYPE_RT5650)
 235                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 236                                         SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 237                                         SND_JACK_BTN_2 | SND_JACK_BTN_3;
 238         else
 239                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
 240
 241         ret = snd_soc_card_jack_new(runtime->card, "Headset",
 242                                     jack_type, &ctx->jack,
 243                                     cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
 244         if (ret) {
 245                 dev_err(runtime->dev, "Headset jack creation failed %d\n", ret);
 246                 return ret;
 247         }
 248
 249         rt5645_set_jack_detect(codec, &ctx->jack, &ctx->jack, &ctx->jack);
 250
 251         if (ctx->mclk) {
 252                 /*
 253                  * The firmware might enable the clock at
 254                  * boot (this information may or may not
 255                  * be reflected in the enable clock register).
 256                  * To change the rate we must disable the clock
 257                  * first to cover these cases. Due to common
 258                  * clock framework restrictions that do not allow
 259                  * to disable a clock that has not been enabled,
 260                  * we need to enable the clock first.
 261                  */
 262                 ret = clk_prepare_enable(ctx->mclk);
 263                 if (!ret)
 264                         clk_disable_unprepare(ctx->mclk);
 265
 266                 ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ);
 267
 268                 if (ret)
 269                         dev_err(runtime->dev, "unable to set MCLK rate\n");
 270         }
 271         return ret;
 272 }
 273
 274 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 275                             struct snd_pcm_hw_params *params)
 276 {
 277         struct snd_interval *rate = hw_param_interval(params,
 278                         SNDRV_PCM_HW_PARAM_RATE);
 279         struct snd_interval *channels = hw_param_interval(params,
 280                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 281
 282         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 283         rate->min = rate->max = 48000;
 284         channels->min = channels->max = 2;
 285
 286         /* set SSP2 to 24-bit */
 287         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 288         return 0;
 289 }
 290
 291 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 292 {
 293         return snd_pcm_hw_constraint_single(substream->runtime,
 294                         SNDRV_PCM_HW_PARAM_RATE, 48000);
 295 }
 296
 297 static struct snd_soc_ops cht_aif1_ops = {
 298         .startup = cht_aif1_startup,
 299 };
 300
 301 static struct snd_soc_ops cht_be_ssp2_ops = {
 302         .hw_params = cht_aif1_hw_params,
 303 };
 304
 305 static struct snd_soc_dai_link cht_dailink[] = {
 306         [MERR_DPCM_AUDIO] = {
 307                 .name = "Audio Port",
 308                 .stream_name = "Audio",
 309                 .cpu_dai_name = "media-cpu-dai",
 310                 .codec_dai_name = "snd-soc-dummy-dai",
 311                 .codec_name = "snd-soc-dummy",
 312                 .platform_name = "sst-mfld-platform",
 313                 .nonatomic = true,
 314                 .dynamic = 1,
 315                 .dpcm_playback = 1,
 316                 .dpcm_capture = 1,
 317                 .ops = &cht_aif1_ops,
 318         },
 319         [MERR_DPCM_DEEP_BUFFER] = {
 320                 .name = "Deep-Buffer Audio Port",
 321                 .stream_name = "Deep-Buffer Audio",
 322                 .cpu_dai_name = "deepbuffer-cpu-dai",
 323                 .codec_dai_name = "snd-soc-dummy-dai",
 324                 .codec_name = "snd-soc-dummy",
 325                 .platform_name = "sst-mfld-platform",
 326                 .nonatomic = true,
 327                 .dynamic = 1,
 328                 .dpcm_playback = 1,
 329                 .ops = &cht_aif1_ops,
 330         },
 331         [MERR_DPCM_COMPR] = {
 332                 .name = "Compressed Port",
 333                 .stream_name = "Compress",
 334                 .cpu_dai_name = "compress-cpu-dai",
 335                 .codec_dai_name = "snd-soc-dummy-dai",
 336                 .codec_name = "snd-soc-dummy",
 337                 .platform_name = "sst-mfld-platform",
 338         },
 339         /* CODEC<->CODEC link */
 340         /* back ends */
 341         {
 342                 .name = "SSP2-Codec",
 343                 .id = 1,
 344                 .cpu_dai_name = "ssp2-port",
 345                 .platform_name = "sst-mfld-platform",
 346                 .no_pcm = 1,
 347                 .codec_dai_name = "rt5645-aif1",
 348                 .codec_name = "i2c-10EC5645:00",
 349                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
 350                                         | SND_SOC_DAIFMT_CBS_CFS,
 351                 .init = cht_codec_init,
 352                 .be_hw_params_fixup = cht_codec_fixup,
 353                 .nonatomic = true,
 354                 .dpcm_playback = 1,
 355                 .dpcm_capture = 1,
 356                 .ops = &cht_be_ssp2_ops,
 357         },
 358 };
 359
 360 /* SoC card */
 361 static struct snd_soc_card snd_soc_card_chtrt5645 = {
 362         .name = "chtrt5645",
 363         .owner = THIS_MODULE,
 364         .dai_link = cht_dailink,
 365         .num_links = ARRAY_SIZE(cht_dailink),
 366         .dapm_widgets = cht_dapm_widgets,
 367         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 368         .dapm_routes = cht_rt5645_audio_map,
 369         .num_dapm_routes = ARRAY_SIZE(cht_rt5645_audio_map),
 370         .controls = cht_mc_controls,
 371         .num_controls = ARRAY_SIZE(cht_mc_controls),
 372 };
 373
 374 static struct snd_soc_card snd_soc_card_chtrt5650 = {
 375         .name = "chtrt5650",
 376         .owner = THIS_MODULE,
 377         .dai_link = cht_dailink,
 378         .num_links = ARRAY_SIZE(cht_dailink),
 379         .dapm_widgets = cht_dapm_widgets,
 380         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 381         .dapm_routes = cht_rt5650_audio_map,
 382         .num_dapm_routes = ARRAY_SIZE(cht_rt5650_audio_map),
 383         .controls = cht_mc_controls,
 384         .num_controls = ARRAY_SIZE(cht_mc_controls),
 385 };
 386
 387 static struct cht_acpi_card snd_soc_cards[] = {
 388         {"10EC5640", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
 389         {"10EC5645", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
 390         {"10EC5650", CODEC_TYPE_RT5650, &snd_soc_card_chtrt5650},
 391 };
 392
 393 static char cht_rt5640_codec_name[16]; /* i2c-<HID>:00 with HID being 8 chars */
 394
 395 static bool is_valleyview(void)
 396 {
 397         static const struct x86_cpu_id cpu_ids[] = {
 398                 { X86_VENDOR_INTEL, 6, 55 }, /* Valleyview, Bay Trail */
 399                 {}
 400         };
 401
 402         if (!x86_match_cpu(cpu_ids))
 403                 return false;
 404         return true;
 405 }
 406
 407 static int snd_cht_mc_probe(struct platform_device *pdev)
 408 {
 409         int ret_val = 0;
 410         int i;
 411         struct cht_mc_private *drv;
 412         struct snd_soc_card *card = snd_soc_cards[0].soc_card;
 413         struct sst_acpi_mach *mach;
 414         const char *i2c_name = NULL;
 415         int dai_index = 0;
 416         bool found = false;
 417
 418         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
 419         if (!drv)
 420                 return -ENOMEM;
 421
 422         mach = (&pdev->dev)->platform_data;
 423
 424         for (i = 0; i < ARRAY_SIZE(snd_soc_cards); i++) {
 425                 if (acpi_dev_found(snd_soc_cards[i].codec_id) &&
 426                         (!strncmp(snd_soc_cards[i].codec_id, mach->id, 8))) {
 427                         dev_dbg(&pdev->dev,
 428                                 "found codec %s\n", snd_soc_cards[i].codec_id);
 429                         card = snd_soc_cards[i].soc_card;
 430                         drv->acpi_card = &snd_soc_cards[i];
 431                         found = true;
 432                         break;
 433                 }
 434         }
 435
 436         if (!found) {
 437                 dev_err(&pdev->dev, "No matching HID found in supported list\n");
 438                 return -ENODEV;
 439         }
 440
 441         card->dev = &pdev->dev;
 442         sprintf(drv->codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
 443
 444         /* set correct codec name */
 445         for (i = 0; i < ARRAY_SIZE(cht_dailink); i++)
 446                 if (!strcmp(card->dai_link[i].codec_name, "i2c-10EC5645:00")) {
 447                         card->dai_link[i].codec_name = drv->codec_name;
 448                         dai_index = i;
 449                 }
 450
 451         /* fixup codec name based on HID */
 452         i2c_name = sst_acpi_find_name_from_hid(mach->id);
 453         if (i2c_name != NULL) {
 454                 snprintf(cht_rt5640_codec_name, sizeof(cht_rt5640_codec_name),
 455                         "%s%s", "i2c-", i2c_name);
 456                 cht_dailink[dai_index].codec_name = cht_rt5640_codec_name;
 457         }
 458
 459         if (is_valleyview()) {
 460                 drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
 461                 if (IS_ERR(drv->mclk)) {
 462                         dev_err(&pdev->dev,
 463                                 "Failed to get MCLK from pmc_plt_clk_3: %ld\n",
 464                                 PTR_ERR(drv->mclk));
 465                         return PTR_ERR(drv->mclk);
 466                 }
 467         }
 468
 469         snd_soc_card_set_drvdata(card, drv);
 470         ret_val = devm_snd_soc_register_card(&pdev->dev, card);
 471         if (ret_val) {
 472                 dev_err(&pdev->dev,
 473                         "snd_soc_register_card failed %d\n", ret_val);
 474                 return ret_val;
 475         }
 476         platform_set_drvdata(pdev, card);
 477         return ret_val;
 478 }
 479
 480 static struct platform_driver snd_cht_mc_driver = {
 481         .driver = {
 482                 .name = "cht-bsw-rt5645",
 483         },
 484         .probe = snd_cht_mc_probe,
 485 };
 486
 487 module_platform_driver(snd_cht_mc_driver)
 488
 489 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
 490 MODULE_AUTHOR("Fang, Yang A,N,Harshapriya");
 491 MODULE_LICENSE("GPL v2");
 492 MODULE_ALIAS("platform:cht-bsw-rt5645");