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         int i;
  51
  52         for (i = 0; i < card->num_rtd; i++) {
  53                 struct snd_soc_pcm_runtime *rtd;
  54
  55                 rtd = card->rtd + i;
  56                 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
  57                              strlen(CHT_CODEC_DAI)))
  58                         return rtd->codec_dai;
  59         }
  60         return NULL;
  61 }
  62
  63 static int platform_clock_control(struct snd_soc_dapm_widget *w,
  64                 struct snd_kcontrol *k, int  event)
  65 {
  66         struct snd_soc_dapm_context *dapm = w->dapm;
  67         struct snd_soc_card *card = dapm->card;
  68         struct snd_soc_dai *codec_dai;
  69         int ret;
  70
  71         codec_dai = cht_get_codec_dai(card);
  72         if (!codec_dai) {
  73                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
  74                 return -EIO;
  75         }
  76
  77         if (!SND_SOC_DAPM_EVENT_OFF(event))
  78                 return 0;
  79
  80         /* Set codec sysclk source to its internal clock because codec PLL will
  81          * be off when idle and MCLK will also be off by ACPI when codec is
  82          * runtime suspended. Codec needs clock for jack detection and button
  83          * press.
  84          */
  85         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_RCCLK,
  86                         0, 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
  92         return 0;
  93 }
  94
  95 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
  96         SND_SOC_DAPM_HP("Headphone", NULL),
  97         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  98         SND_SOC_DAPM_MIC("Int Mic", NULL),
  99         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 100         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
 101                         platform_clock_control, SND_SOC_DAPM_POST_PMD),
 102 };
 103
 104 static const struct snd_soc_dapm_route cht_rt5645_audio_map[] = {
 105         {"IN1P", NULL, "Headset Mic"},
 106         {"IN1N", NULL, "Headset Mic"},
 107         {"DMIC L1", NULL, "Int Mic"},
 108         {"DMIC R1", NULL, "Int Mic"},
 109         {"Headphone", NULL, "HPOL"},
 110         {"Headphone", NULL, "HPOR"},
 111         {"Ext Spk", NULL, "SPOL"},
 112         {"Ext Spk", NULL, "SPOR"},
 113         {"AIF1 Playback", NULL, "ssp2 Tx"},
 114         {"ssp2 Tx", NULL, "codec_out0"},
 115         {"ssp2 Tx", NULL, "codec_out1"},
 116         {"codec_in0", NULL, "ssp2 Rx" },
 117         {"codec_in1", NULL, "ssp2 Rx" },
 118         {"ssp2 Rx", NULL, "AIF1 Capture"},
 119         {"Headphone", NULL, "Platform Clock"},
 120         {"Headset Mic", NULL, "Platform Clock"},
 121         {"Int Mic", NULL, "Platform Clock"},
 122         {"Ext Spk", NULL, "Platform Clock"},
 123 };
 124
 125 static const struct snd_soc_dapm_route cht_rt5650_audio_map[] = {
 126         {"IN1P", NULL, "Headset Mic"},
 127         {"IN1N", NULL, "Headset Mic"},
 128         {"DMIC L2", NULL, "Int Mic"},
 129         {"DMIC R2", NULL, "Int Mic"},
 130         {"Headphone", NULL, "HPOL"},
 131         {"Headphone", NULL, "HPOR"},
 132         {"Ext Spk", NULL, "SPOL"},
 133         {"Ext Spk", NULL, "SPOR"},
 134         {"AIF1 Playback", NULL, "ssp2 Tx"},
 135         {"ssp2 Tx", NULL, "codec_out0"},
 136         {"ssp2 Tx", NULL, "codec_out1"},
 137         {"codec_in0", NULL, "ssp2 Rx" },
 138         {"codec_in1", NULL, "ssp2 Rx" },
 139         {"ssp2 Rx", NULL, "AIF1 Capture"},
 140         {"Headphone", NULL, "Platform Clock"},
 141         {"Headset Mic", NULL, "Platform Clock"},
 142         {"Int Mic", NULL, "Platform Clock"},
 143         {"Ext Spk", NULL, "Platform Clock"},
 144 };
 145
 146 static const struct snd_kcontrol_new cht_mc_controls[] = {
 147         SOC_DAPM_PIN_SWITCH("Headphone"),
 148         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 149         SOC_DAPM_PIN_SWITCH("Int Mic"),
 150         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 151 };
 152
 153 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
 154                              struct snd_pcm_hw_params *params)
 155 {
 156         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 157         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 158         int ret;
 159
 160         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
 161         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
 162                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
 163         if (ret < 0) {
 164                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 165                 return ret;
 166         }
 167
 168         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1,
 169                                 params_rate(params) * 512, SND_SOC_CLOCK_IN);
 170         if (ret < 0) {
 171                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 172                 return ret;
 173         }
 174
 175         return 0;
 176 }
 177
 178 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 179 {
 180         int ret;
 181         int jack_type;
 182         struct snd_soc_codec *codec = runtime->codec;
 183         struct snd_soc_dai *codec_dai = runtime->codec_dai;
 184         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
 185
 186         /* Select clk_i2s1_asrc as ASRC clock source */
 187         rt5645_sel_asrc_clk_src(codec,
 188                                 RT5645_DA_STEREO_FILTER |
 189                                 RT5645_DA_MONO_L_FILTER |
 190                                 RT5645_DA_MONO_R_FILTER |
 191                                 RT5645_AD_STEREO_FILTER,
 192                                 RT5645_CLK_SEL_I2S1_ASRC);
 193
 194         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
 195         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
 196         if (ret < 0) {
 197                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
 198                 return ret;
 199         }
 200
 201         if (ctx->acpi_card->codec_type == CODEC_TYPE_RT5650)
 202                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
 203                                         SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 204                                         SND_JACK_BTN_2 | SND_JACK_BTN_3;
 205         else
 206                 jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
 207
 208         ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
 209                                     jack_type, &ctx->jack,
 210                                     NULL, 0);
 211         if (ret) {
 212                 dev_err(runtime->dev, "Headset jack creation failed %d\n", ret);
 213                 return ret;
 214         }
 215
 216         rt5645_set_jack_detect(codec, &ctx->jack, &ctx->jack, &ctx->jack);
 217
 218         return ret;
 219 }
 220
 221 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 222                             struct snd_pcm_hw_params *params)
 223 {
 224         struct snd_interval *rate = hw_param_interval(params,
 225                         SNDRV_PCM_HW_PARAM_RATE);
 226         struct snd_interval *channels = hw_param_interval(params,
 227                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 228
 229         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 230         rate->min = rate->max = 48000;
 231         channels->min = channels->max = 2;
 232
 233         /* set SSP2 to 24-bit */
 234         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 235         return 0;
 236 }
 237
 238 static unsigned int rates_48000[] = {
 239         48000,
 240 };
 241
 242 static struct snd_pcm_hw_constraint_list constraints_48000 = {
 243         .count = ARRAY_SIZE(rates_48000),
 244         .list  = rates_48000,
 245 };
 246
 247 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 248 {
 249         return snd_pcm_hw_constraint_list(substream->runtime, 0,
 250                         SNDRV_PCM_HW_PARAM_RATE,
 251                         &constraints_48000);
 252 }
 253
 254 static struct snd_soc_ops cht_aif1_ops = {
 255         .startup = cht_aif1_startup,
 256 };
 257
 258 static struct snd_soc_ops cht_be_ssp2_ops = {
 259         .hw_params = cht_aif1_hw_params,
 260 };
 261
 262 static struct snd_soc_dai_link cht_dailink[] = {
 263         [MERR_DPCM_AUDIO] = {
 264                 .name = "Audio Port",
 265                 .stream_name = "Audio",
 266                 .cpu_dai_name = "media-cpu-dai",
 267                 .codec_dai_name = "snd-soc-dummy-dai",
 268                 .codec_name = "snd-soc-dummy",
 269                 .platform_name = "sst-mfld-platform",
 270                 .nonatomic = true,
 271                 .dynamic = 1,
 272                 .dpcm_playback = 1,
 273                 .dpcm_capture = 1,
 274                 .ops = &cht_aif1_ops,
 275         },
 276         [MERR_DPCM_COMPR] = {
 277                 .name = "Compressed Port",
 278                 .stream_name = "Compress",
 279                 .cpu_dai_name = "compress-cpu-dai",
 280                 .codec_dai_name = "snd-soc-dummy-dai",
 281                 .codec_name = "snd-soc-dummy",
 282                 .platform_name = "sst-mfld-platform",
 283         },
 284         /* CODEC<->CODEC link */
 285         /* back ends */
 286         {
 287                 .name = "SSP2-Codec",
 288                 .be_id = 1,
 289                 .cpu_dai_name = "ssp2-port",
 290                 .platform_name = "sst-mfld-platform",
 291                 .no_pcm = 1,
 292                 .codec_dai_name = "rt5645-aif1",
 293                 .codec_name = "i2c-10EC5645:00",
 294                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
 295                                         | SND_SOC_DAIFMT_CBS_CFS,
 296                 .init = cht_codec_init,
 297                 .be_hw_params_fixup = cht_codec_fixup,
 298                 .nonatomic = true,
 299                 .dpcm_playback = 1,
 300                 .dpcm_capture = 1,
 301                 .ops = &cht_be_ssp2_ops,
 302         },
 303 };
 304
 305 /* SoC card */
 306 static struct snd_soc_card snd_soc_card_chtrt5645 = {
 307         .name = "chtrt5645",
 308         .owner = THIS_MODULE,
 309         .dai_link = cht_dailink,
 310         .num_links = ARRAY_SIZE(cht_dailink),
 311         .dapm_widgets = cht_dapm_widgets,
 312         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 313         .dapm_routes = cht_rt5645_audio_map,
 314         .num_dapm_routes = ARRAY_SIZE(cht_rt5645_audio_map),
 315         .controls = cht_mc_controls,
 316         .num_controls = ARRAY_SIZE(cht_mc_controls),
 317 };
 318
 319 static struct snd_soc_card snd_soc_card_chtrt5650 = {
 320         .name = "chtrt5650",
 321         .owner = THIS_MODULE,
 322         .dai_link = cht_dailink,
 323         .num_links = ARRAY_SIZE(cht_dailink),
 324         .dapm_widgets = cht_dapm_widgets,
 325         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 326         .dapm_routes = cht_rt5650_audio_map,
 327         .num_dapm_routes = ARRAY_SIZE(cht_rt5650_audio_map),
 328         .controls = cht_mc_controls,
 329         .num_controls = ARRAY_SIZE(cht_mc_controls),
 330 };
 331
 332 static struct cht_acpi_card snd_soc_cards[] = {
 333         {"10EC5645", CODEC_TYPE_RT5645, &snd_soc_card_chtrt5645},
 334         {"10EC5650", CODEC_TYPE_RT5650, &snd_soc_card_chtrt5650},
 335 };
 336
 337 static acpi_status snd_acpi_codec_match(acpi_handle handle, u32 level,
 338                                        void *context, void **ret)
 339 {
 340         *(bool *)context = true;
 341         return AE_OK;
 342 }
 343
 344 static int snd_cht_mc_probe(struct platform_device *pdev)
 345 {
 346         int ret_val = 0;
 347         int i;
 348         struct cht_mc_private *drv;
 349         struct snd_soc_card *card = snd_soc_cards[0].soc_card;
 350         bool found = false;
 351         char codec_name[16];
 352
 353         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
 354         if (!drv)
 355                 return -ENOMEM;
 356
 357         for (i = 0; i < ARRAY_SIZE(snd_soc_cards); i++) {
 358                 if (ACPI_SUCCESS(acpi_get_devices(
 359                                                 snd_soc_cards[i].codec_id,
 360                                                 snd_acpi_codec_match,
 361                                                 &found, NULL)) && found) {
 362                         dev_dbg(&pdev->dev,
 363                                 "found codec %s\n", snd_soc_cards[i].codec_id);
 364                         card = snd_soc_cards[i].soc_card;
 365                         drv->acpi_card = &snd_soc_cards[i];
 366                         break;
 367                 }
 368         }
 369         card->dev = &pdev->dev;
 370         sprintf(codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
 371         /* set correct codec name */
 372         strcpy((char *)card->dai_link[2].codec_name, codec_name);
 373         snd_soc_card_set_drvdata(card, drv);
 374         ret_val = devm_snd_soc_register_card(&pdev->dev, card);
 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, card);
 381         return ret_val;
 382 }
 383
 384 static struct platform_driver snd_cht_mc_driver = {
 385         .driver = {
 386                 .name = "cht-bsw-rt5645",
 387         },
 388         .probe = snd_cht_mc_probe,
 389 };
 390
 391 module_platform_driver(snd_cht_mc_driver)
 392
 393 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
 394 MODULE_AUTHOR("Fang, Yang A,N,Harshapriya");
 395 MODULE_LICENSE("GPL v2");
 396 MODULE_ALIAS("platform:cht-bsw-rt5645");