1 /* 2 * Intel Skylake I2S Machine Driver with MAXIM98357A 3 * and NAU88L25 4 * 5 * Copyright (C) 2015, Intel Corporation. All rights reserved. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License version 9 * 2 as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #include <linux/module.h> 18 #include <linux/platform_device.h> 19 #include <sound/core.h> 20 #include <sound/jack.h> 21 #include <sound/pcm.h> 22 #include <sound/pcm_params.h> 23 #include <sound/soc.h> 24 #include "../../codecs/nau8825.h" 25 26 #define SKL_NUVOTON_CODEC_DAI "nau8825-hifi" 27 #define SKL_MAXIM_CODEC_DAI "HiFi" 28 29 static struct snd_soc_jack skylake_headset; 30 static struct snd_soc_card skylake_audio_card; 31 32 static inline struct snd_soc_dai *skl_get_codec_dai(struct snd_soc_card *card) 33 { 34 struct snd_soc_pcm_runtime *rtd; 35 36 list_for_each_entry(rtd, &card->rtd_list, list) { 37 38 if (!strncmp(rtd->codec_dai->name, SKL_NUVOTON_CODEC_DAI, 39 strlen(SKL_NUVOTON_CODEC_DAI))) 40 return rtd->codec_dai; 41 } 42 43 return NULL; 44 } 45 46 static int platform_clock_control(struct snd_soc_dapm_widget *w, 47 struct snd_kcontrol *k, int event) 48 { 49 struct snd_soc_dapm_context *dapm = w->dapm; 50 struct snd_soc_card *card = dapm->card; 51 struct snd_soc_dai *codec_dai; 52 int ret; 53 54 codec_dai = skl_get_codec_dai(card); 55 if (!codec_dai) { 56 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n"); 57 return -EIO; 58 } 59 60 if (SND_SOC_DAPM_EVENT_ON(event)) { 61 ret = snd_soc_dai_set_sysclk(codec_dai, 62 NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN); 63 if (ret < 0) { 64 dev_err(card->dev, "set sysclk err = %d\n", ret); 65 return -EIO; 66 } 67 } else { 68 ret = snd_soc_dai_set_sysclk(codec_dai, 69 NAU8825_CLK_INTERNAL, 0, SND_SOC_CLOCK_IN); 70 if (ret < 0) { 71 dev_err(card->dev, "set sysclk err = %d\n", ret); 72 return -EIO; 73 } 74 } 75 76 return ret; 77 } 78 79 static const struct snd_kcontrol_new skylake_controls[] = { 80 SOC_DAPM_PIN_SWITCH("Headphone Jack"), 81 SOC_DAPM_PIN_SWITCH("Headset Mic"), 82 SOC_DAPM_PIN_SWITCH("Spk"), 83 }; 84 85 static const struct snd_soc_dapm_widget skylake_widgets[] = { 86 SND_SOC_DAPM_HP("Headphone Jack", NULL), 87 SND_SOC_DAPM_MIC("Headset Mic", NULL), 88 SND_SOC_DAPM_SPK("Spk", NULL), 89 SND_SOC_DAPM_MIC("SoC DMIC", NULL), 90 SND_SOC_DAPM_SINK("WoV Sink"), 91 SND_SOC_DAPM_SPK("DP", NULL), 92 SND_SOC_DAPM_SPK("HDMI", NULL), 93 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, 94 platform_clock_control, SND_SOC_DAPM_PRE_PMU | 95 SND_SOC_DAPM_POST_PMD), 96 }; 97 98 static const struct snd_soc_dapm_route skylake_map[] = { 99 /* HP jack connectors - unknown if we have jack detection */ 100 { "Headphone Jack", NULL, "HPOL" }, 101 { "Headphone Jack", NULL, "HPOR" }, 102 103 /* speaker */ 104 { "Spk", NULL, "Speaker" }, 105 106 /* other jacks */ 107 { "MIC", NULL, "Headset Mic" }, 108 { "DMic", NULL, "SoC DMIC" }, 109 110 {"WoV Sink", NULL, "hwd_in sink"}, 111 {"HDMI", NULL, "hif5 Output"}, 112 {"DP", NULL, "hif6 Output"}, 113 114 /* CODEC BE connections */ 115 { "HiFi Playback", NULL, "ssp0 Tx" }, 116 { "ssp0 Tx", NULL, "codec0_out" }, 117 118 { "Playback", NULL, "ssp1 Tx" }, 119 { "ssp1 Tx", NULL, "codec1_out" }, 120 121 { "codec0_in", NULL, "ssp1 Rx" }, 122 { "ssp1 Rx", NULL, "Capture" }, 123 124 /* DMIC */ 125 { "dmic01_hifi", NULL, "DMIC01 Rx" }, 126 { "DMIC01 Rx", NULL, "DMIC AIF" }, 127 { "hifi1", NULL, "iDisp Tx"}, 128 { "iDisp Tx", NULL, "iDisp_out"}, 129 { "Headphone Jack", NULL, "Platform Clock" }, 130 { "Headset Mic", NULL, "Platform Clock" }, 131 }; 132 133 static int skylake_ssp_fixup(struct snd_soc_pcm_runtime *rtd, 134 struct snd_pcm_hw_params *params) 135 { 136 struct snd_interval *rate = hw_param_interval(params, 137 SNDRV_PCM_HW_PARAM_RATE); 138 struct snd_interval *channels = hw_param_interval(params, 139 SNDRV_PCM_HW_PARAM_CHANNELS); 140 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 141 142 /* The ADSP will covert the FE rate to 48k, stereo */ 143 rate->min = rate->max = 48000; 144 channels->min = channels->max = 2; 145 146 /* set SSP0 to 24 bit */ 147 snd_mask_none(fmt); 148 snd_mask_set(fmt, SNDRV_PCM_FORMAT_S24_LE); 149 150 return 0; 151 } 152 153 static int skylake_nau8825_codec_init(struct snd_soc_pcm_runtime *rtd) 154 { 155 int ret; 156 struct snd_soc_codec *codec = rtd->codec; 157 158 /* 159 * Headset buttons map to the google Reference headset. 160 * These can be configured by userspace. 161 */ 162 ret = snd_soc_card_jack_new(&skylake_audio_card, "Headset Jack", 163 SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 | 164 SND_JACK_BTN_2 | SND_JACK_BTN_3, &skylake_headset, 165 NULL, 0); 166 if (ret) { 167 dev_err(rtd->dev, "Headset Jack creation failed %d\n", ret); 168 return ret; 169 } 170 171 nau8825_enable_jack_detect(codec, &skylake_headset); 172 173 snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "SoC DMIC"); 174 snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "WoV Sink"); 175 176 return ret; 177 } 178 179 static int skylake_nau8825_fe_init(struct snd_soc_pcm_runtime *rtd) 180 { 181 struct snd_soc_dapm_context *dapm; 182 struct snd_soc_component *component = rtd->cpu_dai->component; 183 184 dapm = snd_soc_component_get_dapm(component); 185 snd_soc_dapm_ignore_suspend(dapm, "Reference Capture"); 186 187 return 0; 188 } 189 190 static unsigned int rates[] = { 191 48000, 192 }; 193 194 static struct snd_pcm_hw_constraint_list constraints_rates = { 195 .count = ARRAY_SIZE(rates), 196 .list = rates, 197 .mask = 0, 198 }; 199 200 static unsigned int channels[] = { 201 2, 202 }; 203 204 static struct snd_pcm_hw_constraint_list constraints_channels = { 205 .count = ARRAY_SIZE(channels), 206 .list = channels, 207 .mask = 0, 208 }; 209 210 static int skl_fe_startup(struct snd_pcm_substream *substream) 211 { 212 struct snd_pcm_runtime *runtime = substream->runtime; 213 214 /* 215 * On this platform for PCM device we support, 216 * 48Khz 217 * stereo 218 * 16 bit audio 219 */ 220 221 runtime->hw.channels_max = 2; 222 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 223 &constraints_channels); 224 225 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; 226 snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16); 227 228 snd_pcm_hw_constraint_list(runtime, 0, 229 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); 230 231 return 0; 232 } 233 234 static const struct snd_soc_ops skylake_nau8825_fe_ops = { 235 .startup = skl_fe_startup, 236 }; 237 238 static int skylake_nau8825_hw_params(struct snd_pcm_substream *substream, 239 struct snd_pcm_hw_params *params) 240 { 241 struct snd_soc_pcm_runtime *rtd = substream->private_data; 242 struct snd_soc_dai *codec_dai = rtd->codec_dai; 243 int ret; 244 245 ret = snd_soc_dai_set_sysclk(codec_dai, 246 NAU8825_CLK_MCLK, 24000000, SND_SOC_CLOCK_IN); 247 248 if (ret < 0) 249 dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", ret); 250 251 return ret; 252 } 253 254 static struct snd_soc_ops skylake_nau8825_ops = { 255 .hw_params = skylake_nau8825_hw_params, 256 }; 257 258 static int skylake_dmic_fixup(struct snd_soc_pcm_runtime *rtd, 259 struct snd_pcm_hw_params *params) 260 { 261 struct snd_interval *channels = hw_param_interval(params, 262 SNDRV_PCM_HW_PARAM_CHANNELS); 263 264 if (params_channels(params) == 2) 265 channels->min = channels->max = 2; 266 else 267 channels->min = channels->max = 4; 268 269 return 0; 270 } 271 272 static unsigned int channels_dmic[] = { 273 2, 4, 274 }; 275 276 static struct snd_pcm_hw_constraint_list constraints_dmic_channels = { 277 .count = ARRAY_SIZE(channels_dmic), 278 .list = channels_dmic, 279 .mask = 0, 280 }; 281 282 static int skylake_dmic_startup(struct snd_pcm_substream *substream) 283 { 284 struct snd_pcm_runtime *runtime = substream->runtime; 285 286 runtime->hw.channels_max = 4; 287 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 288 &constraints_dmic_channels); 289 290 return snd_pcm_hw_constraint_list(substream->runtime, 0, 291 SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); 292 } 293 294 static struct snd_soc_ops skylake_dmic_ops = { 295 .startup = skylake_dmic_startup, 296 }; 297 298 static unsigned int rates_16000[] = { 299 16000, 300 }; 301 302 static struct snd_pcm_hw_constraint_list constraints_16000 = { 303 .count = ARRAY_SIZE(rates_16000), 304 .list = rates_16000, 305 }; 306 307 static int skylake_refcap_startup(struct snd_pcm_substream *substream) 308 { 309 return snd_pcm_hw_constraint_list(substream->runtime, 0, 310 SNDRV_PCM_HW_PARAM_RATE, 311 &constraints_16000); 312 } 313 314 static struct snd_soc_ops skylaye_refcap_ops = { 315 .startup = skylake_refcap_startup, 316 }; 317 318 /* skylake digital audio interface glue - connects codec <--> CPU */ 319 static struct snd_soc_dai_link skylake_dais[] = { 320 /* Front End DAI links */ 321 { 322 .name = "Skl Audio Port", 323 .stream_name = "Audio", 324 .cpu_dai_name = "System Pin", 325 .platform_name = "0000:00:1f.3", 326 .dynamic = 1, 327 .codec_name = "snd-soc-dummy", 328 .codec_dai_name = "snd-soc-dummy-dai", 329 .nonatomic = 1, 330 .init = skylake_nau8825_fe_init, 331 .trigger = { 332 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 333 .dpcm_playback = 1, 334 .ops = &skylake_nau8825_fe_ops, 335 }, 336 { 337 .name = "Skl Audio Capture Port", 338 .stream_name = "Audio Record", 339 .cpu_dai_name = "System Pin", 340 .platform_name = "0000:00:1f.3", 341 .dynamic = 1, 342 .codec_name = "snd-soc-dummy", 343 .codec_dai_name = "snd-soc-dummy-dai", 344 .nonatomic = 1, 345 .trigger = { 346 SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST}, 347 .dpcm_capture = 1, 348 .ops = &skylake_nau8825_fe_ops, 349 }, 350 { 351 .name = "Skl Audio Reference cap", 352 .stream_name = "Wake on Voice", 353 .cpu_dai_name = "Reference Pin", 354 .codec_name = "snd-soc-dummy", 355 .codec_dai_name = "snd-soc-dummy-dai", 356 .platform_name = "0000:00:1f.3", 357 .init = NULL, 358 .dpcm_capture = 1, 359 .ignore_suspend = 1, 360 .nonatomic = 1, 361 .dynamic = 1, 362 .ops = &skylaye_refcap_ops, 363 }, 364 { 365 .name = "Skl Audio DMIC cap", 366 .stream_name = "dmiccap", 367 .cpu_dai_name = "DMIC Pin", 368 .codec_name = "snd-soc-dummy", 369 .codec_dai_name = "snd-soc-dummy-dai", 370 .platform_name = "0000:00:1f.3", 371 .init = NULL, 372 .dpcm_capture = 1, 373 .nonatomic = 1, 374 .dynamic = 1, 375 .ops = &skylake_dmic_ops, 376 }, 377 { 378 .name = "Skl HDMI Port", 379 .stream_name = "Hdmi", 380 .cpu_dai_name = "HDMI Pin", 381 .codec_name = "snd-soc-dummy", 382 .codec_dai_name = "snd-soc-dummy-dai", 383 .platform_name = "0000:00:1f.3", 384 .dpcm_playback = 1, 385 .init = NULL, 386 .nonatomic = 1, 387 .dynamic = 1, 388 }, 389 390 /* Back End DAI links */ 391 { 392 /* SSP0 - Codec */ 393 .name = "SSP0-Codec", 394 .be_id = 0, 395 .cpu_dai_name = "SSP0 Pin", 396 .platform_name = "0000:00:1f.3", 397 .no_pcm = 1, 398 .codec_name = "MX98357A:00", 399 .codec_dai_name = SKL_MAXIM_CODEC_DAI, 400 .dai_fmt = SND_SOC_DAIFMT_I2S | 401 SND_SOC_DAIFMT_NB_NF | 402 SND_SOC_DAIFMT_CBS_CFS, 403 .ignore_pmdown_time = 1, 404 .be_hw_params_fixup = skylake_ssp_fixup, 405 .dpcm_playback = 1, 406 }, 407 { 408 /* SSP1 - Codec */ 409 .name = "SSP1-Codec", 410 .be_id = 0, 411 .cpu_dai_name = "SSP1 Pin", 412 .platform_name = "0000:00:1f.3", 413 .no_pcm = 1, 414 .codec_name = "i2c-10508825:00", 415 .codec_dai_name = SKL_NUVOTON_CODEC_DAI, 416 .init = skylake_nau8825_codec_init, 417 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 418 SND_SOC_DAIFMT_CBS_CFS, 419 .ignore_pmdown_time = 1, 420 .be_hw_params_fixup = skylake_ssp_fixup, 421 .ops = &skylake_nau8825_ops, 422 .dpcm_playback = 1, 423 .dpcm_capture = 1, 424 }, 425 { 426 .name = "dmic01", 427 .be_id = 1, 428 .cpu_dai_name = "DMIC01 Pin", 429 .codec_name = "dmic-codec", 430 .codec_dai_name = "dmic-hifi", 431 .platform_name = "0000:00:1f.3", 432 .be_hw_params_fixup = skylake_dmic_fixup, 433 .ignore_suspend = 1, 434 .dpcm_capture = 1, 435 .no_pcm = 1, 436 }, 437 { 438 .name = "iDisp", 439 .be_id = 3, 440 .cpu_dai_name = "iDisp Pin", 441 .codec_name = "ehdaudio0D2", 442 .codec_dai_name = "intel-hdmi-hifi1", 443 .platform_name = "0000:00:1f.3", 444 .dpcm_playback = 1, 445 .no_pcm = 1, 446 }, 447 }; 448 449 /* skylake audio machine driver for SPT + NAU88L25 */ 450 static struct snd_soc_card skylake_audio_card = { 451 .name = "sklnau8825max", 452 .owner = THIS_MODULE, 453 .dai_link = skylake_dais, 454 .num_links = ARRAY_SIZE(skylake_dais), 455 .controls = skylake_controls, 456 .num_controls = ARRAY_SIZE(skylake_controls), 457 .dapm_widgets = skylake_widgets, 458 .num_dapm_widgets = ARRAY_SIZE(skylake_widgets), 459 .dapm_routes = skylake_map, 460 .num_dapm_routes = ARRAY_SIZE(skylake_map), 461 .fully_routed = true, 462 }; 463 464 static int skylake_audio_probe(struct platform_device *pdev) 465 { 466 skylake_audio_card.dev = &pdev->dev; 467 468 return devm_snd_soc_register_card(&pdev->dev, &skylake_audio_card); 469 } 470 471 static struct platform_driver skylake_audio = { 472 .probe = skylake_audio_probe, 473 .driver = { 474 .name = "skl_nau88l25_max98357a_i2s", 475 .pm = &snd_soc_pm_ops, 476 }, 477 }; 478 479 module_platform_driver(skylake_audio) 480 481 /* Module information */ 482 MODULE_DESCRIPTION("Audio Machine driver-NAU88L25 & MAX98357A in I2S mode"); 483 MODULE_AUTHOR("Rohit Ainapure <rohit.m.ainapure@intel.com"); 484 MODULE_LICENSE("GPL v2"); 485 MODULE_ALIAS("platform:skl_nau88l25_max98357a_i2s"); 486