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