1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * cht_bsw_rt5672.c - ASoc Machine driver for Intel Cherryview-based platforms 4 * Cherrytrail and Braswell, with RT5672 codec. 5 * 6 * Copyright (C) 2014 Intel Corp 7 * Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com> 8 * Mengdong Lin <mengdong.lin@intel.com> 9 */ 10 11 #include <linux/gpio/consumer.h> 12 #include <linux/input.h> 13 #include <linux/module.h> 14 #include <linux/platform_device.h> 15 #include <linux/slab.h> 16 #include <linux/clk.h> 17 #include <sound/pcm.h> 18 #include <sound/pcm_params.h> 19 #include <sound/soc.h> 20 #include <sound/jack.h> 21 #include <sound/soc-acpi.h> 22 #include "../../codecs/rt5670.h" 23 #include "../atom/sst-atom-controls.h" 24 #include "../common/soc-intel-quirks.h" 25 26 27 /* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */ 28 #define CHT_PLAT_CLK_3_HZ 19200000 29 #define CHT_CODEC_DAI "rt5670-aif1" 30 31 struct cht_mc_private { 32 struct snd_soc_jack headset; 33 char codec_name[SND_ACPI_I2C_ID_LEN]; 34 struct clk *mclk; 35 bool use_ssp0; 36 }; 37 38 /* Headset jack detection DAPM pins */ 39 static struct snd_soc_jack_pin cht_bsw_headset_pins[] = { 40 { 41 .pin = "Headset Mic", 42 .mask = SND_JACK_MICROPHONE, 43 }, 44 { 45 .pin = "Headphone", 46 .mask = SND_JACK_HEADPHONE, 47 }, 48 }; 49 50 static int platform_clock_control(struct snd_soc_dapm_widget *w, 51 struct snd_kcontrol *k, int event) 52 { 53 struct snd_soc_dapm_context *dapm = w->dapm; 54 struct snd_soc_card *card = dapm->card; 55 struct snd_soc_dai *codec_dai; 56 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card); 57 int ret; 58 59 codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI); 60 if (!codec_dai) { 61 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n"); 62 return -EIO; 63 } 64 65 if (SND_SOC_DAPM_EVENT_ON(event)) { 66 if (ctx->mclk) { 67 ret = clk_prepare_enable(ctx->mclk); 68 if (ret < 0) { 69 dev_err(card->dev, 70 "could not configure MCLK state"); 71 return ret; 72 } 73 } 74 75 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ 76 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, 77 CHT_PLAT_CLK_3_HZ, 48000 * 512); 78 if (ret < 0) { 79 dev_err(card->dev, "can't set codec pll: %d\n", ret); 80 return ret; 81 } 82 83 /* set codec sysclk source to PLL */ 84 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, 85 48000 * 512, SND_SOC_CLOCK_IN); 86 if (ret < 0) { 87 dev_err(card->dev, "can't set codec sysclk: %d\n", ret); 88 return ret; 89 } 90 } else { 91 /* Set codec sysclk source to its internal clock because codec 92 * PLL will be off when idle and MCLK will also be off by ACPI 93 * when codec is runtime suspended. Codec needs clock for jack 94 * detection and button press. 95 */ 96 snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK, 97 48000 * 512, SND_SOC_CLOCK_IN); 98 99 if (ctx->mclk) 100 clk_disable_unprepare(ctx->mclk); 101 } 102 return 0; 103 } 104 105 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = { 106 SND_SOC_DAPM_HP("Headphone", NULL), 107 SND_SOC_DAPM_MIC("Headset Mic", NULL), 108 SND_SOC_DAPM_MIC("Int Mic", NULL), 109 SND_SOC_DAPM_SPK("Ext Spk", NULL), 110 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, 111 platform_clock_control, SND_SOC_DAPM_PRE_PMU | 112 SND_SOC_DAPM_POST_PMD), 113 }; 114 115 static const struct snd_soc_dapm_route cht_audio_map[] = { 116 {"IN1P", NULL, "Headset Mic"}, 117 {"IN1N", NULL, "Headset Mic"}, 118 {"DMIC L1", NULL, "Int Mic"}, 119 {"DMIC R1", NULL, "Int Mic"}, 120 {"Headphone", NULL, "HPOL"}, 121 {"Headphone", NULL, "HPOR"}, 122 {"Ext Spk", NULL, "SPOLP"}, 123 {"Ext Spk", NULL, "SPOLN"}, 124 {"Ext Spk", NULL, "SPORP"}, 125 {"Ext Spk", NULL, "SPORN"}, 126 {"Headphone", NULL, "Platform Clock"}, 127 {"Headset Mic", NULL, "Platform Clock"}, 128 {"Int Mic", NULL, "Platform Clock"}, 129 {"Ext Spk", NULL, "Platform Clock"}, 130 }; 131 132 static const struct snd_soc_dapm_route cht_audio_ssp0_map[] = { 133 {"AIF1 Playback", NULL, "ssp0 Tx"}, 134 {"ssp0 Tx", NULL, "modem_out"}, 135 {"modem_in", NULL, "ssp0 Rx"}, 136 {"ssp0 Rx", NULL, "AIF1 Capture"}, 137 }; 138 139 static const struct snd_soc_dapm_route cht_audio_ssp2_map[] = { 140 {"AIF1 Playback", NULL, "ssp2 Tx"}, 141 {"ssp2 Tx", NULL, "codec_out0"}, 142 {"ssp2 Tx", NULL, "codec_out1"}, 143 {"codec_in0", NULL, "ssp2 Rx"}, 144 {"codec_in1", NULL, "ssp2 Rx"}, 145 {"ssp2 Rx", NULL, "AIF1 Capture"}, 146 }; 147 148 static const struct snd_kcontrol_new cht_mc_controls[] = { 149 SOC_DAPM_PIN_SWITCH("Headphone"), 150 SOC_DAPM_PIN_SWITCH("Headset Mic"), 151 SOC_DAPM_PIN_SWITCH("Int Mic"), 152 SOC_DAPM_PIN_SWITCH("Ext Spk"), 153 }; 154 155 static int cht_aif1_hw_params(struct snd_pcm_substream *substream, 156 struct snd_pcm_hw_params *params) 157 { 158 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 159 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); 160 int ret; 161 162 /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ 163 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, 164 CHT_PLAT_CLK_3_HZ, params_rate(params) * 512); 165 if (ret < 0) { 166 dev_err(rtd->dev, "can't set codec pll: %d\n", ret); 167 return ret; 168 } 169 170 /* set codec sysclk source to PLL */ 171 ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, 172 params_rate(params) * 512, 173 SND_SOC_CLOCK_IN); 174 if (ret < 0) { 175 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret); 176 return ret; 177 } 178 return 0; 179 } 180 181 static const struct acpi_gpio_params headset_gpios = { 0, 0, false }; 182 183 static const struct acpi_gpio_mapping cht_rt5672_gpios[] = { 184 { "headset-gpios", &headset_gpios, 1 }, 185 {}, 186 }; 187 188 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime) 189 { 190 int ret; 191 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(runtime, 0); 192 struct snd_soc_component *component = codec_dai->component; 193 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card); 194 195 if (devm_acpi_dev_add_driver_gpios(component->dev, cht_rt5672_gpios)) 196 dev_warn(runtime->dev, "Unable to add GPIO mapping table\n"); 197 198 /* Select codec ASRC clock source to track I2S1 clock, because codec 199 * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot 200 * be supported by RT5672. Otherwise, ASRC will be disabled and cause 201 * noise. 202 */ 203 rt5670_sel_asrc_clk_src(component, 204 RT5670_DA_STEREO_FILTER 205 | RT5670_DA_MONO_L_FILTER 206 | RT5670_DA_MONO_R_FILTER 207 | RT5670_AD_STEREO_FILTER 208 | RT5670_AD_MONO_L_FILTER 209 | RT5670_AD_MONO_R_FILTER, 210 RT5670_CLK_SEL_I2S1_ASRC); 211 212 if (ctx->use_ssp0) { 213 ret = snd_soc_dapm_add_routes(&runtime->card->dapm, 214 cht_audio_ssp0_map, 215 ARRAY_SIZE(cht_audio_ssp0_map)); 216 } else { 217 ret = snd_soc_dapm_add_routes(&runtime->card->dapm, 218 cht_audio_ssp2_map, 219 ARRAY_SIZE(cht_audio_ssp2_map)); 220 } 221 if (ret) 222 return ret; 223 224 ret = snd_soc_card_jack_new_pins(runtime->card, "Headset", 225 SND_JACK_HEADSET | SND_JACK_BTN_0 | 226 SND_JACK_BTN_1 | SND_JACK_BTN_2, 227 &ctx->headset, 228 cht_bsw_headset_pins, 229 ARRAY_SIZE(cht_bsw_headset_pins)); 230 if (ret) 231 return ret; 232 233 snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); 234 snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_1, KEY_VOLUMEUP); 235 snd_jack_set_key(ctx->headset.jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN); 236 237 rt5670_set_jack_detect(component, &ctx->headset); 238 if (ctx->mclk) { 239 /* 240 * The firmware might enable the clock at 241 * boot (this information may or may not 242 * be reflected in the enable clock register). 243 * To change the rate we must disable the clock 244 * first to cover these cases. Due to common 245 * clock framework restrictions that do not allow 246 * to disable a clock that has not been enabled, 247 * we need to enable the clock first. 248 */ 249 ret = clk_prepare_enable(ctx->mclk); 250 if (!ret) 251 clk_disable_unprepare(ctx->mclk); 252 253 ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ); 254 255 if (ret) { 256 dev_err(runtime->dev, "unable to set MCLK rate\n"); 257 return ret; 258 } 259 } 260 return 0; 261 } 262 263 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd, 264 struct snd_pcm_hw_params *params) 265 { 266 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(rtd->card); 267 struct snd_interval *rate = hw_param_interval(params, 268 SNDRV_PCM_HW_PARAM_RATE); 269 struct snd_interval *channels = hw_param_interval(params, 270 SNDRV_PCM_HW_PARAM_CHANNELS); 271 int ret, bits; 272 273 /* The DSP will convert the FE rate to 48k, stereo, 24bits */ 274 rate->min = rate->max = 48000; 275 channels->min = channels->max = 2; 276 277 if (ctx->use_ssp0) { 278 /* set SSP0 to 16-bit */ 279 params_set_format(params, SNDRV_PCM_FORMAT_S16_LE); 280 bits = 16; 281 } else { 282 /* set SSP2 to 24-bit */ 283 params_set_format(params, SNDRV_PCM_FORMAT_S24_LE); 284 bits = 24; 285 } 286 287 /* 288 * The default mode for the cpu-dai is TDM 4 slot. The default mode 289 * for the codec-dai is I2S. So we need to either set the cpu-dai to 290 * I2S mode to match the codec-dai, or set the codec-dai to TDM 4 slot 291 * (or program both to yet another mode). 292 * One board, the Lenovo Miix 2 10, uses not 1 but 2 codecs connected 293 * to SSP2. The second piggy-backed, output-only codec is inside the 294 * keyboard-dock (which has extra speakers). Unlike the main rt5672 295 * codec, we cannot configure this codec, it is hard coded to use 296 * 2 channel 24 bit I2S. For this to work we must use I2S mode on this 297 * board. Since we only support 2 channels anyways, there is no need 298 * for TDM on any cht-bsw-rt5672 designs. So we use I2S 2ch everywhere. 299 */ 300 ret = snd_soc_dai_set_fmt(snd_soc_rtd_to_cpu(rtd, 0), 301 SND_SOC_DAIFMT_I2S | 302 SND_SOC_DAIFMT_NB_NF | 303 SND_SOC_DAIFMT_BP_FP); 304 if (ret < 0) { 305 dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret); 306 return ret; 307 } 308 309 ret = snd_soc_dai_set_tdm_slot(snd_soc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, bits); 310 if (ret < 0) { 311 dev_err(rtd->dev, "can't set I2S config, err %d\n", ret); 312 return ret; 313 } 314 315 return 0; 316 } 317 318 static int cht_aif1_startup(struct snd_pcm_substream *substream) 319 { 320 return snd_pcm_hw_constraint_single(substream->runtime, 321 SNDRV_PCM_HW_PARAM_RATE, 48000); 322 } 323 324 static const struct snd_soc_ops cht_aif1_ops = { 325 .startup = cht_aif1_startup, 326 }; 327 328 static const struct snd_soc_ops cht_be_ssp2_ops = { 329 .hw_params = cht_aif1_hw_params, 330 }; 331 332 SND_SOC_DAILINK_DEF(dummy, 333 DAILINK_COMP_ARRAY(COMP_DUMMY())); 334 335 SND_SOC_DAILINK_DEF(media, 336 DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai"))); 337 338 SND_SOC_DAILINK_DEF(deepbuffer, 339 DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai"))); 340 341 SND_SOC_DAILINK_DEF(ssp2_port, 342 DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port"))); 343 SND_SOC_DAILINK_DEF(ssp2_codec, 344 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5670:00", 345 "rt5670-aif1"))); 346 347 SND_SOC_DAILINK_DEF(platform, 348 DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform"))); 349 350 static struct snd_soc_dai_link cht_dailink[] = { 351 /* Front End DAI links */ 352 [MERR_DPCM_AUDIO] = { 353 .name = "Audio Port", 354 .stream_name = "Audio", 355 .nonatomic = true, 356 .dynamic = 1, 357 .dpcm_playback = 1, 358 .dpcm_capture = 1, 359 .ops = &cht_aif1_ops, 360 SND_SOC_DAILINK_REG(media, dummy, platform), 361 }, 362 [MERR_DPCM_DEEP_BUFFER] = { 363 .name = "Deep-Buffer Audio Port", 364 .stream_name = "Deep-Buffer Audio", 365 .nonatomic = true, 366 .dynamic = 1, 367 .dpcm_playback = 1, 368 .ops = &cht_aif1_ops, 369 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform), 370 }, 371 372 /* Back End DAI links */ 373 { 374 /* SSP2 - Codec */ 375 .name = "SSP2-Codec", 376 .id = 0, 377 .no_pcm = 1, 378 .init = cht_codec_init, 379 .be_hw_params_fixup = cht_codec_fixup, 380 .dpcm_playback = 1, 381 .dpcm_capture = 1, 382 .ops = &cht_be_ssp2_ops, 383 SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform), 384 }, 385 }; 386 387 static int cht_suspend_pre(struct snd_soc_card *card) 388 { 389 struct snd_soc_component *component; 390 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card); 391 392 for_each_card_components(card, component) { 393 if (!strncmp(component->name, 394 ctx->codec_name, sizeof(ctx->codec_name))) { 395 396 dev_dbg(component->dev, "disabling jack detect before going to suspend.\n"); 397 rt5670_jack_suspend(component); 398 break; 399 } 400 } 401 return 0; 402 } 403 404 static int cht_resume_post(struct snd_soc_card *card) 405 { 406 struct snd_soc_component *component; 407 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card); 408 409 for_each_card_components(card, component) { 410 if (!strncmp(component->name, 411 ctx->codec_name, sizeof(ctx->codec_name))) { 412 413 dev_dbg(component->dev, "enabling jack detect for resume.\n"); 414 rt5670_jack_resume(component); 415 break; 416 } 417 } 418 419 return 0; 420 } 421 422 /* use space before codec name to simplify card ID, and simplify driver name */ 423 #define SOF_CARD_NAME "bytcht rt5672" /* card name will be 'sof-bytcht rt5672' */ 424 #define SOF_DRIVER_NAME "SOF" 425 426 #define CARD_NAME "cht-bsw-rt5672" 427 #define DRIVER_NAME NULL /* card name will be used for driver name */ 428 429 /* SoC card */ 430 static struct snd_soc_card snd_soc_card_cht = { 431 .owner = THIS_MODULE, 432 .dai_link = cht_dailink, 433 .num_links = ARRAY_SIZE(cht_dailink), 434 .dapm_widgets = cht_dapm_widgets, 435 .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets), 436 .dapm_routes = cht_audio_map, 437 .num_dapm_routes = ARRAY_SIZE(cht_audio_map), 438 .controls = cht_mc_controls, 439 .num_controls = ARRAY_SIZE(cht_mc_controls), 440 .suspend_pre = cht_suspend_pre, 441 .resume_post = cht_resume_post, 442 }; 443 444 #define RT5672_I2C_DEFAULT "i2c-10EC5670:00" 445 446 static int snd_cht_mc_probe(struct platform_device *pdev) 447 { 448 int ret_val = 0; 449 struct cht_mc_private *drv; 450 struct snd_soc_acpi_mach *mach = pdev->dev.platform_data; 451 const char *platform_name; 452 struct acpi_device *adev; 453 bool sof_parent; 454 int dai_index = 0; 455 int i; 456 457 drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL); 458 if (!drv) 459 return -ENOMEM; 460 461 strcpy(drv->codec_name, RT5672_I2C_DEFAULT); 462 463 /* find index of codec dai */ 464 for (i = 0; i < ARRAY_SIZE(cht_dailink); i++) { 465 if (!strcmp(cht_dailink[i].codecs->name, RT5672_I2C_DEFAULT)) { 466 dai_index = i; 467 break; 468 } 469 } 470 471 /* fixup codec name based on HID */ 472 adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1); 473 if (adev) { 474 snprintf(drv->codec_name, sizeof(drv->codec_name), 475 "i2c-%s", acpi_dev_name(adev)); 476 cht_dailink[dai_index].codecs->name = drv->codec_name; 477 } 478 acpi_dev_put(adev); 479 480 /* Use SSP0 on Bay Trail CR devices */ 481 if (soc_intel_is_byt() && mach->mach_params.acpi_ipc_irq_index == 0) { 482 cht_dailink[dai_index].cpus->dai_name = "ssp0-port"; 483 drv->use_ssp0 = true; 484 } 485 486 /* override platform name, if required */ 487 snd_soc_card_cht.dev = &pdev->dev; 488 platform_name = mach->mach_params.platform; 489 490 ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht, 491 platform_name); 492 if (ret_val) 493 return ret_val; 494 495 snd_soc_card_cht.components = rt5670_components(); 496 497 drv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3"); 498 if (IS_ERR(drv->mclk)) { 499 dev_err(&pdev->dev, 500 "Failed to get MCLK from pmc_plt_clk_3: %ld\n", 501 PTR_ERR(drv->mclk)); 502 return PTR_ERR(drv->mclk); 503 } 504 snd_soc_card_set_drvdata(&snd_soc_card_cht, drv); 505 506 sof_parent = snd_soc_acpi_sof_parent(&pdev->dev); 507 508 /* set card and driver name */ 509 if (sof_parent) { 510 snd_soc_card_cht.name = SOF_CARD_NAME; 511 snd_soc_card_cht.driver_name = SOF_DRIVER_NAME; 512 } else { 513 snd_soc_card_cht.name = CARD_NAME; 514 snd_soc_card_cht.driver_name = DRIVER_NAME; 515 } 516 517 /* set pm ops */ 518 if (sof_parent) 519 pdev->dev.driver->pm = &snd_soc_pm_ops; 520 521 /* register the soc card */ 522 ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht); 523 if (ret_val) { 524 dev_err(&pdev->dev, 525 "snd_soc_register_card failed %d\n", ret_val); 526 return ret_val; 527 } 528 platform_set_drvdata(pdev, &snd_soc_card_cht); 529 return ret_val; 530 } 531 532 static struct platform_driver snd_cht_mc_driver = { 533 .driver = { 534 .name = "cht-bsw-rt5672", 535 }, 536 .probe = snd_cht_mc_probe, 537 }; 538 539 module_platform_driver(snd_cht_mc_driver); 540 541 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver"); 542 MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin"); 543 MODULE_LICENSE("GPL v2"); 544 MODULE_ALIAS("platform:cht-bsw-rt5672"); 545