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
  29 /* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */
  30 #define CHT_PLAT_CLK_3_HZ       19200000
  31 #define CHT_CODEC_DAI   "rt5670-aif1"
  32
  33 static struct snd_soc_jack cht_bsw_headset;
  34
  35 /* Headset jack detection DAPM pins */
  36 static struct snd_soc_jack_pin cht_bsw_headset_pins[] = {
  37         {
  38                 .pin = "Headset Mic",
  39                 .mask = SND_JACK_MICROPHONE,
  40         },
  41         {
  42                 .pin = "Headphone",
  43                 .mask = SND_JACK_HEADPHONE,
  44         },
  45 };
  46
  47 static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
  48 {
  49         struct snd_soc_pcm_runtime *rtd;
  50
  51         list_for_each_entry(rtd, &card->rtd_list, list) {
  52                 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
  53                              strlen(CHT_CODEC_DAI)))
  54                         return rtd->codec_dai;
  55         }
  56         return NULL;
  57 }
  58
  59 static int platform_clock_control(struct snd_soc_dapm_widget *w,
  60                 struct snd_kcontrol *k, int  event)
  61 {
  62         struct snd_soc_dapm_context *dapm = w->dapm;
  63         struct snd_soc_card *card = dapm->card;
  64         struct snd_soc_dai *codec_dai;
  65         int ret;
  66
  67         codec_dai = cht_get_codec_dai(card);
  68         if (!codec_dai) {
  69                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
  70                 return -EIO;
  71         }
  72
  73         if (SND_SOC_DAPM_EVENT_ON(event)) {
  74                 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
  75                 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
  76                                 CHT_PLAT_CLK_3_HZ, 48000 * 512);
  77                 if (ret < 0) {
  78                         dev_err(card->dev, "can't set codec pll: %d\n", ret);
  79                         return ret;
  80                 }
  81
  82                 /* set codec sysclk source to PLL */
  83                 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
  84                         48000 * 512, 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         } else {
  90                 /* Set codec sysclk source to its internal clock because codec
  91                  * PLL will be off when idle and MCLK will also be off by ACPI
  92                  * when codec is runtime suspended. Codec needs clock for jack
  93                  * detection and button press.
  94                  */
  95                 snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK,
  96                                        48000 * 512, SND_SOC_CLOCK_IN);
  97         }
  98         return 0;
  99 }
 100
 101 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
 102         SND_SOC_DAPM_HP("Headphone", NULL),
 103         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 104         SND_SOC_DAPM_MIC("Int Mic", NULL),
 105         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 106         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
 107                         platform_clock_control, SND_SOC_DAPM_PRE_PMU |
 108                         SND_SOC_DAPM_POST_PMD),
 109 };
 110
 111 static const struct snd_soc_dapm_route cht_audio_map[] = {
 112         {"IN1P", NULL, "Headset Mic"},
 113         {"IN1N", NULL, "Headset Mic"},
 114         {"DMIC L1", NULL, "Int Mic"},
 115         {"DMIC R1", NULL, "Int Mic"},
 116         {"Headphone", NULL, "HPOL"},
 117         {"Headphone", NULL, "HPOR"},
 118         {"Ext Spk", NULL, "SPOLP"},
 119         {"Ext Spk", NULL, "SPOLN"},
 120         {"Ext Spk", NULL, "SPORP"},
 121         {"Ext Spk", NULL, "SPORN"},
 122         {"AIF1 Playback", NULL, "ssp2 Tx"},
 123         {"ssp2 Tx", NULL, "codec_out0"},
 124         {"ssp2 Tx", NULL, "codec_out1"},
 125         {"codec_in0", NULL, "ssp2 Rx"},
 126         {"codec_in1", NULL, "ssp2 Rx"},
 127         {"ssp2 Rx", NULL, "AIF1 Capture"},
 128         {"Headphone", NULL, "Platform Clock"},
 129         {"Headset Mic", NULL, "Platform Clock"},
 130         {"Int Mic", NULL, "Platform Clock"},
 131         {"Ext Spk", NULL, "Platform Clock"},
 132 };
 133
 134 static const struct snd_kcontrol_new cht_mc_controls[] = {
 135         SOC_DAPM_PIN_SWITCH("Headphone"),
 136         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 137         SOC_DAPM_PIN_SWITCH("Int Mic"),
 138         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 139 };
 140
 141 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
 142                                         struct snd_pcm_hw_params *params)
 143 {
 144         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 145         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 146         int ret;
 147
 148         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
 149         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK,
 150                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
 151         if (ret < 0) {
 152                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 153                 return ret;
 154         }
 155
 156         /* set codec sysclk source to PLL */
 157         ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1,
 158                                      params_rate(params) * 512,
 159                                      SND_SOC_CLOCK_IN);
 160         if (ret < 0) {
 161                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 162                 return ret;
 163         }
 164         return 0;
 165 }
 166
 167 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 168 {
 169         int ret;
 170         struct snd_soc_dai *codec_dai = runtime->codec_dai;
 171         struct snd_soc_codec *codec = codec_dai->codec;
 172
 173         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
 174         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
 175         if (ret < 0) {
 176                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
 177                 return ret;
 178         }
 179
 180         /* Select codec ASRC clock source to track I2S1 clock, because codec
 181          * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot
 182          * be supported by RT5672. Otherwise, ASRC will be disabled and cause
 183          * noise.
 184          */
 185         rt5670_sel_asrc_clk_src(codec,
 186                                 RT5670_DA_STEREO_FILTER
 187                                 | RT5670_DA_MONO_L_FILTER
 188                                 | RT5670_DA_MONO_R_FILTER
 189                                 | RT5670_AD_STEREO_FILTER
 190                                 | RT5670_AD_MONO_L_FILTER
 191                                 | RT5670_AD_MONO_R_FILTER,
 192                                 RT5670_CLK_SEL_I2S1_ASRC);
 193
 194         ret = snd_soc_card_jack_new(runtime->card, "Headset",
 195                 SND_JACK_HEADSET | SND_JACK_BTN_0 |
 196                 SND_JACK_BTN_1 | SND_JACK_BTN_2, &cht_bsw_headset,
 197                 cht_bsw_headset_pins, ARRAY_SIZE(cht_bsw_headset_pins));
 198         if (ret)
 199                 return ret;
 200
 201         rt5670_set_jack_detect(codec, &cht_bsw_headset);
 202         return 0;
 203 }
 204
 205 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 206                             struct snd_pcm_hw_params *params)
 207 {
 208         struct snd_interval *rate = hw_param_interval(params,
 209                         SNDRV_PCM_HW_PARAM_RATE);
 210         struct snd_interval *channels = hw_param_interval(params,
 211                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 212
 213         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 214         rate->min = rate->max = 48000;
 215         channels->min = channels->max = 2;
 216
 217         /* set SSP2 to 24-bit */
 218         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 219         return 0;
 220 }
 221
 222 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 223 {
 224         return snd_pcm_hw_constraint_single(substream->runtime,
 225                         SNDRV_PCM_HW_PARAM_RATE, 48000);
 226 }
 227
 228 static struct snd_soc_ops cht_aif1_ops = {
 229         .startup = cht_aif1_startup,
 230 };
 231
 232 static struct snd_soc_ops cht_be_ssp2_ops = {
 233         .hw_params = cht_aif1_hw_params,
 234 };
 235
 236 static struct snd_soc_dai_link cht_dailink[] = {
 237         /* Front End DAI links */
 238         [MERR_DPCM_AUDIO] = {
 239                 .name = "Audio Port",
 240                 .stream_name = "Audio",
 241                 .cpu_dai_name = "media-cpu-dai",
 242                 .codec_dai_name = "snd-soc-dummy-dai",
 243                 .codec_name = "snd-soc-dummy",
 244                 .platform_name = "sst-mfld-platform",
 245                 .nonatomic = true,
 246                 .dynamic = 1,
 247                 .dpcm_playback = 1,
 248                 .dpcm_capture = 1,
 249                 .ops = &cht_aif1_ops,
 250         },
 251         [MERR_DPCM_DEEP_BUFFER] = {
 252                 .name = "Deep-Buffer Audio Port",
 253                 .stream_name = "Deep-Buffer Audio",
 254                 .cpu_dai_name = "deepbuffer-cpu-dai",
 255                 .codec_dai_name = "snd-soc-dummy-dai",
 256                 .codec_name = "snd-soc-dummy",
 257                 .platform_name = "sst-mfld-platform",
 258                 .nonatomic = true,
 259                 .dynamic = 1,
 260                 .dpcm_playback = 1,
 261                 .ops = &cht_aif1_ops,
 262         },
 263         [MERR_DPCM_COMPR] = {
 264                 .name = "Compressed Port",
 265                 .stream_name = "Compress",
 266                 .cpu_dai_name = "compress-cpu-dai",
 267                 .codec_dai_name = "snd-soc-dummy-dai",
 268                 .codec_name = "snd-soc-dummy",
 269                 .platform_name = "sst-mfld-platform",
 270         },
 271
 272         /* Back End DAI links */
 273         {
 274                 /* SSP2 - Codec */
 275                 .name = "SSP2-Codec",
 276                 .be_id = 1,
 277                 .cpu_dai_name = "ssp2-port",
 278                 .platform_name = "sst-mfld-platform",
 279                 .no_pcm = 1,
 280                 .nonatomic = true,
 281                 .codec_dai_name = "rt5670-aif1",
 282                 .codec_name = "i2c-10EC5670:00",
 283                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
 284                                         | SND_SOC_DAIFMT_CBS_CFS,
 285                 .init = cht_codec_init,
 286                 .be_hw_params_fixup = cht_codec_fixup,
 287                 .dpcm_playback = 1,
 288                 .dpcm_capture = 1,
 289                 .ops = &cht_be_ssp2_ops,
 290         },
 291 };
 292
 293 static int cht_suspend_pre(struct snd_soc_card *card)
 294 {
 295         struct snd_soc_codec *codec;
 296
 297         list_for_each_entry(codec, &card->codec_dev_list, card_list) {
 298                 if (!strcmp(codec->component.name, "i2c-10EC5670:00")) {
 299                         dev_dbg(codec->dev, "disabling jack detect before going to suspend.\n");
 300                         rt5670_jack_suspend(codec);
 301                         break;
 302                 }
 303         }
 304         return 0;
 305 }
 306
 307 static int cht_resume_post(struct snd_soc_card *card)
 308 {
 309         struct snd_soc_codec *codec;
 310
 311         list_for_each_entry(codec, &card->codec_dev_list, card_list) {
 312                 if (!strcmp(codec->component.name, "i2c-10EC5670:00")) {
 313                         dev_dbg(codec->dev, "enabling jack detect for resume.\n");
 314                         rt5670_jack_resume(codec);
 315                         break;
 316                 }
 317         }
 318
 319         return 0;
 320 }
 321
 322 /* SoC card */
 323 static struct snd_soc_card snd_soc_card_cht = {
 324         .name = "cherrytrailcraudio",
 325         .owner = THIS_MODULE,
 326         .dai_link = cht_dailink,
 327         .num_links = ARRAY_SIZE(cht_dailink),
 328         .dapm_widgets = cht_dapm_widgets,
 329         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 330         .dapm_routes = cht_audio_map,
 331         .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
 332         .controls = cht_mc_controls,
 333         .num_controls = ARRAY_SIZE(cht_mc_controls),
 334         .suspend_pre = cht_suspend_pre,
 335         .resume_post = cht_resume_post,
 336 };
 337
 338 static int snd_cht_mc_probe(struct platform_device *pdev)
 339 {
 340         int ret_val = 0;
 341
 342         /* register the soc card */
 343         snd_soc_card_cht.dev = &pdev->dev;
 344         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 345         if (ret_val) {
 346                 dev_err(&pdev->dev,
 347                         "snd_soc_register_card failed %d\n", ret_val);
 348                 return ret_val;
 349         }
 350         platform_set_drvdata(pdev, &snd_soc_card_cht);
 351         return ret_val;
 352 }
 353
 354 static struct platform_driver snd_cht_mc_driver = {
 355         .driver = {
 356                 .name = "cht-bsw-rt5672",
 357         },
 358         .probe = snd_cht_mc_probe,
 359 };
 360
 361 module_platform_driver(snd_cht_mc_driver);
 362
 363 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
 364 MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin");
 365 MODULE_LICENSE("GPL v2");
 366 MODULE_ALIAS("platform:cht-bsw-rt5672");