sound/soc/intel/boards/cht_bsw_rt5672.c

   1 /*
   2  *  cht_bsw_rt5672.c - ASoc Machine driver for Intel Cherryview-based platforms
   3  *                     Cherrytrail and Braswell, with RT5672 codec.
   4  *
   5  *  Copyright (C) 2014 Intel Corp
   6  *  Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
   7  *          Mengdong Lin <mengdong.lin@intel.com>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; version 2 of the License.
  12  *
  13  *  This program is distributed in the hope that it will be useful, but
  14  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  General Public License for more details.
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/slab.h>
  22 #include <sound/pcm.h>
  23 #include <sound/pcm_params.h>
  24 #include <sound/soc.h>
  25 #include <sound/jack.h>
  26 #include "../../codecs/rt5670.h"
  27 #include "../atom/sst-atom-controls.h"
  28 #include "../common/sst-acpi.h"
  29
  30 /* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */
  31 #define CHT_PLAT_CLK_3_HZ       19200000
  32 #define CHT_CODEC_DAI   "rt5670-aif1"
  33
  34 static struct snd_soc_jack cht_bsw_headset;
  35 static char cht_bsw_codec_name[16];
  36
  37 /* Headset jack detection DAPM pins */
  38 static struct snd_soc_jack_pin cht_bsw_headset_pins[] = {
  39         {
  40                 .pin = "Headset Mic",
  41                 .mask = SND_JACK_MICROPHONE,
  42         },
  43         {
  44                 .pin = "Headphone",
  45                 .mask = SND_JACK_HEADPHONE,
  46         },
  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_ON(event)) {
  76                 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
  77                 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
  78                                 CHT_PLAT_CLK_3_HZ, 48000 * 512);
  79                 if (ret < 0) {
  80                         dev_err(card->dev, "can't set codec pll: %d\n", ret);
  81                         return ret;
  82                 }
  83
  84                 /* set codec sysclk source to PLL */
  85                 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
  86                         48000 * 512, SND_SOC_CLOCK_IN);
  87                 if (ret < 0) {
  88                         dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
  89                         return ret;
  90                 }
  91         } else {
  92                 /* Set codec sysclk source to its internal clock because codec
  93                  * PLL will be off when idle and MCLK will also be off by ACPI
  94                  * when codec is runtime suspended. Codec needs clock for jack
  95                  * detection and button press.
  96                  */
  97                 snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK,
  98                                        48000 * 512, SND_SOC_CLOCK_IN);
  99         }
 100         return 0;
 101 }
 102
 103 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
 104         SND_SOC_DAPM_HP("Headphone", NULL),
 105         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 106         SND_SOC_DAPM_MIC("Int Mic", NULL),
 107         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 108         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
 109                         platform_clock_control, SND_SOC_DAPM_PRE_PMU |
 110                         SND_SOC_DAPM_POST_PMD),
 111 };
 112
 113 static const struct snd_soc_dapm_route cht_audio_map[] = {
 114         {"IN1P", NULL, "Headset Mic"},
 115         {"IN1N", NULL, "Headset Mic"},
 116         {"DMIC L1", NULL, "Int Mic"},
 117         {"DMIC R1", NULL, "Int Mic"},
 118         {"Headphone", NULL, "HPOL"},
 119         {"Headphone", NULL, "HPOR"},
 120         {"Ext Spk", NULL, "SPOLP"},
 121         {"Ext Spk", NULL, "SPOLN"},
 122         {"Ext Spk", NULL, "SPORP"},
 123         {"Ext Spk", NULL, "SPORN"},
 124         {"AIF1 Playback", NULL, "ssp2 Tx"},
 125         {"ssp2 Tx", NULL, "codec_out0"},
 126         {"ssp2 Tx", NULL, "codec_out1"},
 127         {"codec_in0", NULL, "ssp2 Rx"},
 128         {"codec_in1", NULL, "ssp2 Rx"},
 129         {"ssp2 Rx", NULL, "AIF1 Capture"},
 130         {"Headphone", NULL, "Platform Clock"},
 131         {"Headset Mic", NULL, "Platform Clock"},
 132         {"Int Mic", NULL, "Platform Clock"},
 133         {"Ext Spk", NULL, "Platform Clock"},
 134 };
 135
 136 static const struct snd_kcontrol_new cht_mc_controls[] = {
 137         SOC_DAPM_PIN_SWITCH("Headphone"),
 138         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 139         SOC_DAPM_PIN_SWITCH("Int Mic"),
 140         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 141 };
 142
 143 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
 144                                         struct snd_pcm_hw_params *params)
 145 {
 146         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 147         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 148         int ret;
 149
 150         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
 151         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
 152                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
 153         if (ret < 0) {
 154                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 155                 return ret;
 156         }
 157
 158         /* set codec sysclk source to PLL */
 159         ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
 160                                      params_rate(params) * 512,
 161                                      SND_SOC_CLOCK_IN);
 162         if (ret < 0) {
 163                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 164                 return ret;
 165         }
 166         return 0;
 167 }
 168
 169 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 170 {
 171         int ret;
 172         struct snd_soc_dai *codec_dai = runtime->codec_dai;
 173         struct snd_soc_codec *codec = codec_dai->codec;
 174
 175         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
 176         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
 177         if (ret < 0) {
 178                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
 179                 return ret;
 180         }
 181
 182         /* Select codec ASRC clock source to track I2S1 clock, because codec
 183          * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot
 184          * be supported by RT5672. Otherwise, ASRC will be disabled and cause
 185          * noise.
 186          */
 187         rt5670_sel_asrc_clk_src(codec,
 188                                 RT5670_DA_STEREO_FILTER
 189                                 | RT5670_DA_MONO_L_FILTER
 190                                 | RT5670_DA_MONO_R_FILTER
 191                                 | RT5670_AD_STEREO_FILTER
 192                                 | RT5670_AD_MONO_L_FILTER
 193                                 | RT5670_AD_MONO_R_FILTER,
 194                                 RT5670_CLK_SEL_I2S1_ASRC);
 195
 196         ret = snd_soc_card_jack_new(runtime->card, "Headset",
 197                 SND_JACK_HEADSET | SND_JACK_BTN_0 |
 198                 SND_JACK_BTN_1 | SND_JACK_BTN_2, &cht_bsw_headset,
 199                 cht_bsw_headset_pins, ARRAY_SIZE(cht_bsw_headset_pins));
 200         if (ret)
 201                 return ret;
 202
 203         rt5670_set_jack_detect(codec, &cht_bsw_headset);
 204         return 0;
 205 }
 206
 207 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 208                             struct snd_pcm_hw_params *params)
 209 {
 210         struct snd_interval *rate = hw_param_interval(params,
 211                         SNDRV_PCM_HW_PARAM_RATE);
 212         struct snd_interval *channels = hw_param_interval(params,
 213                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 214
 215         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 216         rate->min = rate->max = 48000;
 217         channels->min = channels->max = 2;
 218
 219         /* set SSP2 to 24-bit */
 220         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 221         return 0;
 222 }
 223
 224 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 225 {
 226         return snd_pcm_hw_constraint_single(substream->runtime,
 227                         SNDRV_PCM_HW_PARAM_RATE, 48000);
 228 }
 229
 230 static const struct snd_soc_ops cht_aif1_ops = {
 231         .startup = cht_aif1_startup,
 232 };
 233
 234 static const struct snd_soc_ops cht_be_ssp2_ops = {
 235         .hw_params = cht_aif1_hw_params,
 236 };
 237
 238 static struct snd_soc_dai_link cht_dailink[] = {
 239         /* Front End DAI links */
 240         [MERR_DPCM_AUDIO] = {
 241                 .name = "Audio Port",
 242                 .stream_name = "Audio",
 243                 .cpu_dai_name = "media-cpu-dai",
 244                 .codec_dai_name = "snd-soc-dummy-dai",
 245                 .codec_name = "snd-soc-dummy",
 246                 .platform_name = "sst-mfld-platform",
 247                 .nonatomic = true,
 248                 .dynamic = 1,
 249                 .dpcm_playback = 1,
 250                 .dpcm_capture = 1,
 251                 .ops = &cht_aif1_ops,
 252         },
 253         [MERR_DPCM_DEEP_BUFFER] = {
 254                 .name = "Deep-Buffer Audio Port",
 255                 .stream_name = "Deep-Buffer Audio",
 256                 .cpu_dai_name = "deepbuffer-cpu-dai",
 257                 .codec_dai_name = "snd-soc-dummy-dai",
 258                 .codec_name = "snd-soc-dummy",
 259                 .platform_name = "sst-mfld-platform",
 260                 .nonatomic = true,
 261                 .dynamic = 1,
 262                 .dpcm_playback = 1,
 263                 .ops = &cht_aif1_ops,
 264         },
 265         [MERR_DPCM_COMPR] = {
 266                 .name = "Compressed Port",
 267                 .stream_name = "Compress",
 268                 .cpu_dai_name = "compress-cpu-dai",
 269                 .codec_dai_name = "snd-soc-dummy-dai",
 270                 .codec_name = "snd-soc-dummy",
 271                 .platform_name = "sst-mfld-platform",
 272         },
 273
 274         /* Back End DAI links */
 275         {
 276                 /* SSP2 - Codec */
 277                 .name = "SSP2-Codec",
 278                 .id = 1,
 279                 .cpu_dai_name = "ssp2-port",
 280                 .platform_name = "sst-mfld-platform",
 281                 .no_pcm = 1,
 282                 .nonatomic = true,
 283                 .codec_dai_name = "rt5670-aif1",
 284                 .codec_name = "i2c-10EC5670:00",
 285                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
 286                                         | SND_SOC_DAIFMT_CBS_CFS,
 287                 .init = cht_codec_init,
 288                 .be_hw_params_fixup = cht_codec_fixup,
 289                 .dpcm_playback = 1,
 290                 .dpcm_capture = 1,
 291                 .ops = &cht_be_ssp2_ops,
 292         },
 293 };
 294
 295 static int cht_suspend_pre(struct snd_soc_card *card)
 296 {
 297         struct snd_soc_component *component;
 298
 299         list_for_each_entry(component, &card->component_dev_list, card_list) {
 300                 if (!strcmp(component->name, "i2c-10EC5670:00")) {
 301                         struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
 302
 303                         dev_dbg(codec->dev, "disabling jack detect before going to suspend.\n");
 304                         rt5670_jack_suspend(codec);
 305                         break;
 306                 }
 307         }
 308         return 0;
 309 }
 310
 311 static int cht_resume_post(struct snd_soc_card *card)
 312 {
 313         struct snd_soc_component *component;
 314
 315         list_for_each_entry(component, &card->component_dev_list, card_list) {
 316                 if (!strcmp(component->name, "i2c-10EC5670:00")) {
 317                         struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
 318
 319                         dev_dbg(codec->dev, "enabling jack detect for resume.\n");
 320                         rt5670_jack_resume(codec);
 321                         break;
 322                 }
 323         }
 324
 325         return 0;
 326 }
 327
 328 /* SoC card */
 329 static struct snd_soc_card snd_soc_card_cht = {
 330         .name = "cherrytrailcraudio",
 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_audio_map,
 337         .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
 338         .controls = cht_mc_controls,
 339         .num_controls = ARRAY_SIZE(cht_mc_controls),
 340         .suspend_pre = cht_suspend_pre,
 341         .resume_post = cht_resume_post,
 342 };
 343
 344 #define RT5672_I2C_DEFAULT      "i2c-10EC5670:00"
 345
 346 static int snd_cht_mc_probe(struct platform_device *pdev)
 347 {
 348         int ret_val = 0;
 349         struct sst_acpi_mach *mach = pdev->dev.platform_data;
 350         const char *i2c_name;
 351         int i;
 352
 353         strcpy(cht_bsw_codec_name, RT5672_I2C_DEFAULT);
 354
 355         /* fixup codec name based on HID */
 356         if (mach) {
 357                 i2c_name = sst_acpi_find_name_from_hid(mach->id);
 358                 if (i2c_name) {
 359                         snprintf(cht_bsw_codec_name, sizeof(cht_bsw_codec_name),
 360                                  "i2c-%s", i2c_name);
 361                         for (i = 0; i < ARRAY_SIZE(cht_dailink); i++) {
 362                                 if (!strcmp(cht_dailink[i].codec_name,
 363                                             RT5672_I2C_DEFAULT)) {
 364                                         cht_dailink[i].codec_name =
 365                                                 cht_bsw_codec_name;
 366                                         break;
 367                                 }
 368                         }
 369                 }
 370         }
 371
 372         /* register the soc card */
 373         snd_soc_card_cht.dev = &pdev->dev;
 374         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 375         if (ret_val) {
 376                 dev_err(&pdev->dev,
 377                         "snd_soc_register_card failed %d\n", ret_val);
 378                 return ret_val;
 379         }
 380         platform_set_drvdata(pdev, &snd_soc_card_cht);
 381         return ret_val;
 382 }
 383
 384 static struct platform_driver snd_cht_mc_driver = {
 385         .driver = {
 386                 .name = "cht-bsw-rt5672",
 387         },
 388         .probe = snd_cht_mc_probe,
 389 };
 390
 391 module_platform_driver(snd_cht_mc_driver);
 392
 393 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
 394 MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin");
 395 MODULE_LICENSE("GPL v2");
 396 MODULE_ALIAS("platform:cht-bsw-rt5672");