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