1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * ASoC machine driver for Intel Broadwell platforms with RT5677 codec 4 * 5 * Copyright (c) 2014, The Chromium OS Authors. All rights reserved. 6 */ 7 8 #include <linux/acpi.h> 9 #include <linux/module.h> 10 #include <linux/platform_device.h> 11 #include <linux/gpio/consumer.h> 12 #include <linux/delay.h> 13 #include <sound/core.h> 14 #include <sound/pcm.h> 15 #include <sound/soc.h> 16 #include <sound/pcm_params.h> 17 #include <sound/jack.h> 18 #include <sound/soc-acpi.h> 19 20 #include "../../codecs/rt5677.h" 21 22 struct bdw_rt5677_priv { 23 struct gpio_desc *gpio_hp_en; 24 struct snd_soc_component *component; 25 }; 26 27 static int bdw_rt5677_event_hp(struct snd_soc_dapm_widget *w, 28 struct snd_kcontrol *k, int event) 29 { 30 struct snd_soc_dapm_context *dapm = w->dapm; 31 struct snd_soc_card *card = dapm->card; 32 struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card); 33 34 if (SND_SOC_DAPM_EVENT_ON(event)) 35 msleep(70); 36 37 gpiod_set_value_cansleep(bdw_rt5677->gpio_hp_en, 38 SND_SOC_DAPM_EVENT_ON(event)); 39 40 return 0; 41 } 42 43 static const struct snd_soc_dapm_widget bdw_rt5677_widgets[] = { 44 SND_SOC_DAPM_HP("Headphone", bdw_rt5677_event_hp), 45 SND_SOC_DAPM_SPK("Speaker", NULL), 46 SND_SOC_DAPM_MIC("Headset Mic", NULL), 47 SND_SOC_DAPM_MIC("Local DMICs", NULL), 48 SND_SOC_DAPM_MIC("Remote DMICs", NULL), 49 }; 50 51 static const struct snd_soc_dapm_route bdw_rt5677_map[] = { 52 /* Speakers */ 53 {"Speaker", NULL, "PDM1L"}, 54 {"Speaker", NULL, "PDM1R"}, 55 56 /* Headset jack connectors */ 57 {"Headphone", NULL, "LOUT1"}, 58 {"Headphone", NULL, "LOUT2"}, 59 {"IN1P", NULL, "Headset Mic"}, 60 {"IN1N", NULL, "Headset Mic"}, 61 62 /* Digital MICs 63 * Local DMICs: the two DMICs on the mainboard 64 * Remote DMICs: the two DMICs on the camera module 65 */ 66 {"DMIC L1", NULL, "Remote DMICs"}, 67 {"DMIC R1", NULL, "Remote DMICs"}, 68 {"DMIC L2", NULL, "Local DMICs"}, 69 {"DMIC R2", NULL, "Local DMICs"}, 70 71 /* CODEC BE connections */ 72 {"SSP0 CODEC IN", NULL, "AIF1 Capture"}, 73 {"AIF1 Playback", NULL, "SSP0 CODEC OUT"}, 74 {"DSP Capture", NULL, "DSP Buffer"}, 75 76 /* DSP Clock Connections */ 77 { "DSP Buffer", NULL, "SSP0 CODEC IN" }, 78 { "SSP0 CODEC IN", NULL, "DSPTX" }, 79 }; 80 81 static const struct snd_kcontrol_new bdw_rt5677_controls[] = { 82 SOC_DAPM_PIN_SWITCH("Speaker"), 83 SOC_DAPM_PIN_SWITCH("Headphone"), 84 SOC_DAPM_PIN_SWITCH("Headset Mic"), 85 SOC_DAPM_PIN_SWITCH("Local DMICs"), 86 SOC_DAPM_PIN_SWITCH("Remote DMICs"), 87 }; 88 89 90 static struct snd_soc_jack headphone_jack; 91 static struct snd_soc_jack mic_jack; 92 93 static struct snd_soc_jack_pin headphone_jack_pin = { 94 .pin = "Headphone", 95 .mask = SND_JACK_HEADPHONE, 96 }; 97 98 static struct snd_soc_jack_pin mic_jack_pin = { 99 .pin = "Headset Mic", 100 .mask = SND_JACK_MICROPHONE, 101 }; 102 103 static struct snd_soc_jack_gpio headphone_jack_gpio = { 104 .name = "plug-det", 105 .report = SND_JACK_HEADPHONE, 106 .debounce_time = 200, 107 }; 108 109 static struct snd_soc_jack_gpio mic_jack_gpio = { 110 .name = "mic-present", 111 .report = SND_JACK_MICROPHONE, 112 .debounce_time = 200, 113 .invert = 1, 114 }; 115 116 /* GPIO indexes defined by ACPI */ 117 enum { 118 RT5677_GPIO_PLUG_DET = 0, 119 RT5677_GPIO_MIC_PRESENT_L = 1, 120 RT5677_GPIO_HOTWORD_DET_L = 2, 121 RT5677_GPIO_DSP_INT = 3, 122 RT5677_GPIO_HP_AMP_SHDN_L = 4, 123 }; 124 125 static const struct acpi_gpio_params plug_det_gpio = { RT5677_GPIO_PLUG_DET, 0, false }; 126 static const struct acpi_gpio_params mic_present_gpio = { RT5677_GPIO_MIC_PRESENT_L, 0, false }; 127 static const struct acpi_gpio_params headphone_enable_gpio = { RT5677_GPIO_HP_AMP_SHDN_L, 0, false }; 128 129 static const struct acpi_gpio_mapping bdw_rt5677_gpios[] = { 130 { "plug-det-gpios", &plug_det_gpio, 1 }, 131 { "mic-present-gpios", &mic_present_gpio, 1 }, 132 { "headphone-enable-gpios", &headphone_enable_gpio, 1 }, 133 { NULL }, 134 }; 135 136 static int broadwell_ssp0_fixup(struct snd_soc_pcm_runtime *rtd, 137 struct snd_pcm_hw_params *params) 138 { 139 struct snd_interval *rate = hw_param_interval(params, 140 SNDRV_PCM_HW_PARAM_RATE); 141 struct snd_interval *chan = hw_param_interval(params, 142 SNDRV_PCM_HW_PARAM_CHANNELS); 143 144 /* The ADSP will covert the FE rate to 48k, stereo */ 145 rate->min = rate->max = 48000; 146 chan->min = chan->max = 2; 147 148 /* set SSP0 to 16 bit */ 149 params_set_format(params, SNDRV_PCM_FORMAT_S16_LE); 150 return 0; 151 } 152 153 static int bdw_rt5677_hw_params(struct snd_pcm_substream *substream, 154 struct snd_pcm_hw_params *params) 155 { 156 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 157 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 158 int ret; 159 160 ret = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, 24576000, 161 SND_SOC_CLOCK_IN); 162 if (ret < 0) { 163 dev_err(rtd->dev, "can't set codec sysclk configuration\n"); 164 return ret; 165 } 166 167 return ret; 168 } 169 170 static int bdw_rt5677_dsp_hw_params(struct snd_pcm_substream *substream, 171 struct snd_pcm_hw_params *params) 172 { 173 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 174 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 175 int ret; 176 177 ret = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_PLL1, 24576000, 178 SND_SOC_CLOCK_IN); 179 if (ret < 0) { 180 dev_err(rtd->dev, "can't set codec sysclk configuration\n"); 181 return ret; 182 } 183 ret = snd_soc_dai_set_pll(codec_dai, 0, RT5677_PLL1_S_MCLK, 184 24000000, 24576000); 185 if (ret < 0) { 186 dev_err(rtd->dev, "can't set codec pll configuration\n"); 187 return ret; 188 } 189 190 return 0; 191 } 192 193 static const struct snd_soc_ops bdw_rt5677_ops = { 194 .hw_params = bdw_rt5677_hw_params, 195 }; 196 197 static const struct snd_soc_ops bdw_rt5677_dsp_ops = { 198 .hw_params = bdw_rt5677_dsp_hw_params, 199 }; 200 201 static const unsigned int channels[] = { 202 2, 203 }; 204 205 static const struct snd_pcm_hw_constraint_list constraints_channels = { 206 .count = ARRAY_SIZE(channels), 207 .list = channels, 208 .mask = 0, 209 }; 210 211 static int bdw_rt5677_fe_startup(struct snd_pcm_substream *substream) 212 { 213 struct snd_pcm_runtime *runtime = substream->runtime; 214 215 /* Board supports stereo configuration only */ 216 runtime->hw.channels_max = 2; 217 return snd_pcm_hw_constraint_list(runtime, 0, 218 SNDRV_PCM_HW_PARAM_CHANNELS, 219 &constraints_channels); 220 } 221 222 static const struct snd_soc_ops bdw_rt5677_fe_ops = { 223 .startup = bdw_rt5677_fe_startup, 224 }; 225 226 static int bdw_rt5677_init(struct snd_soc_pcm_runtime *rtd) 227 { 228 struct bdw_rt5677_priv *bdw_rt5677 = 229 snd_soc_card_get_drvdata(rtd->card); 230 struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component; 231 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); 232 int ret; 233 234 ret = devm_acpi_dev_add_driver_gpios(component->dev, bdw_rt5677_gpios); 235 if (ret) 236 dev_warn(component->dev, "Failed to add driver gpios\n"); 237 238 /* Enable codec ASRC function for Stereo DAC/Stereo1 ADC/DMIC/I2S1. 239 * The ASRC clock source is clk_i2s1_asrc. 240 */ 241 rt5677_sel_asrc_clk_src(component, RT5677_DA_STEREO_FILTER | 242 RT5677_AD_STEREO1_FILTER | RT5677_I2S1_SOURCE, 243 RT5677_CLK_SEL_I2S1_ASRC); 244 /* Enable codec ASRC function for Mono ADC L. 245 * The ASRC clock source is clk_sys2_asrc. 246 */ 247 rt5677_sel_asrc_clk_src(component, RT5677_AD_MONO_L_FILTER, 248 RT5677_CLK_SEL_SYS2); 249 250 /* Request rt5677 GPIO for headphone amp control */ 251 bdw_rt5677->gpio_hp_en = gpiod_get(component->dev, "headphone-enable", 252 GPIOD_OUT_LOW); 253 if (IS_ERR(bdw_rt5677->gpio_hp_en)) { 254 dev_err(component->dev, "Can't find HP_AMP_SHDN_L gpio\n"); 255 return PTR_ERR(bdw_rt5677->gpio_hp_en); 256 } 257 258 /* Create and initialize headphone jack */ 259 if (!snd_soc_card_jack_new(rtd->card, "Headphone Jack", 260 SND_JACK_HEADPHONE, &headphone_jack, 261 &headphone_jack_pin, 1)) { 262 headphone_jack_gpio.gpiod_dev = component->dev; 263 if (snd_soc_jack_add_gpios(&headphone_jack, 1, 264 &headphone_jack_gpio)) 265 dev_err(component->dev, "Can't add headphone jack gpio\n"); 266 } else { 267 dev_err(component->dev, "Can't create headphone jack\n"); 268 } 269 270 /* Create and initialize mic jack */ 271 if (!snd_soc_card_jack_new(rtd->card, "Mic Jack", 272 SND_JACK_MICROPHONE, &mic_jack, 273 &mic_jack_pin, 1)) { 274 mic_jack_gpio.gpiod_dev = component->dev; 275 if (snd_soc_jack_add_gpios(&mic_jack, 1, &mic_jack_gpio)) 276 dev_err(component->dev, "Can't add mic jack gpio\n"); 277 } else { 278 dev_err(component->dev, "Can't create mic jack\n"); 279 } 280 bdw_rt5677->component = component; 281 282 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1"); 283 return 0; 284 } 285 286 static void bdw_rt5677_exit(struct snd_soc_pcm_runtime *rtd) 287 { 288 struct bdw_rt5677_priv *bdw_rt5677 = 289 snd_soc_card_get_drvdata(rtd->card); 290 291 /* 292 * The .exit() can be reached without going through the .init() 293 * so explicitly test if the gpiod is valid 294 */ 295 if (!IS_ERR_OR_NULL(bdw_rt5677->gpio_hp_en)) 296 gpiod_put(bdw_rt5677->gpio_hp_en); 297 } 298 299 /* broadwell digital audio interface glue - connects codec <--> CPU */ 300 SND_SOC_DAILINK_DEF(dummy, 301 DAILINK_COMP_ARRAY(COMP_DUMMY())); 302 303 SND_SOC_DAILINK_DEF(fe, 304 DAILINK_COMP_ARRAY(COMP_CPU("System Pin"))); 305 306 SND_SOC_DAILINK_DEF(platform, 307 DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audio"))); 308 309 SND_SOC_DAILINK_DEF(be, 310 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-RT5677CE:00", "rt5677-aif1"))); 311 312 SND_SOC_DAILINK_DEF(ssp0_port, 313 DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port"))); 314 315 /* Wake on voice interface */ 316 SND_SOC_DAILINK_DEFS(dsp, 317 DAILINK_COMP_ARRAY(COMP_CPU("spi-RT5677AA:00")), 318 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-RT5677CE:00", "rt5677-dspbuffer")), 319 DAILINK_COMP_ARRAY(COMP_PLATFORM("spi-RT5677AA:00"))); 320 321 static struct snd_soc_dai_link bdw_rt5677_dais[] = { 322 /* Front End DAI links */ 323 { 324 .name = "System PCM", 325 .stream_name = "System Playback/Capture", 326 .nonatomic = 1, 327 .dynamic = 1, 328 .trigger = { 329 SND_SOC_DPCM_TRIGGER_POST, 330 SND_SOC_DPCM_TRIGGER_POST 331 }, 332 .dpcm_capture = 1, 333 .dpcm_playback = 1, 334 .ops = &bdw_rt5677_fe_ops, 335 SND_SOC_DAILINK_REG(fe, dummy, platform), 336 }, 337 338 /* Non-DPCM links */ 339 { 340 .name = "Codec DSP", 341 .stream_name = "Wake on Voice", 342 .capture_only = 1, 343 .ops = &bdw_rt5677_dsp_ops, 344 SND_SOC_DAILINK_REG(dsp), 345 }, 346 347 /* Back End DAI links */ 348 { 349 /* SSP0 - Codec */ 350 .name = "Codec", 351 .id = 0, 352 .no_pcm = 1, 353 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 354 SND_SOC_DAIFMT_CBS_CFS, 355 .ignore_pmdown_time = 1, 356 .be_hw_params_fixup = broadwell_ssp0_fixup, 357 .ops = &bdw_rt5677_ops, 358 .dpcm_playback = 1, 359 .dpcm_capture = 1, 360 .init = bdw_rt5677_init, 361 .exit = bdw_rt5677_exit, 362 SND_SOC_DAILINK_REG(ssp0_port, be, platform), 363 }, 364 }; 365 366 static int bdw_rt5677_suspend_pre(struct snd_soc_card *card) 367 { 368 struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card); 369 struct snd_soc_dapm_context *dapm; 370 371 if (bdw_rt5677->component) { 372 dapm = snd_soc_component_get_dapm(bdw_rt5677->component); 373 snd_soc_dapm_disable_pin(dapm, "MICBIAS1"); 374 } 375 return 0; 376 } 377 378 static int bdw_rt5677_resume_post(struct snd_soc_card *card) 379 { 380 struct bdw_rt5677_priv *bdw_rt5677 = snd_soc_card_get_drvdata(card); 381 struct snd_soc_dapm_context *dapm; 382 383 if (bdw_rt5677->component) { 384 dapm = snd_soc_component_get_dapm(bdw_rt5677->component); 385 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1"); 386 } 387 return 0; 388 } 389 390 /* use space before codec name to simplify card ID, and simplify driver name */ 391 #define SOF_CARD_NAME "bdw rt5677" /* card name will be 'sof-bdw rt5677' */ 392 #define SOF_DRIVER_NAME "SOF" 393 394 #define CARD_NAME "bdw-rt5677" 395 #define DRIVER_NAME NULL /* card name will be used for driver name */ 396 397 /* ASoC machine driver for Broadwell DSP + RT5677 */ 398 static struct snd_soc_card bdw_rt5677_card = { 399 .name = CARD_NAME, 400 .driver_name = DRIVER_NAME, 401 .owner = THIS_MODULE, 402 .dai_link = bdw_rt5677_dais, 403 .num_links = ARRAY_SIZE(bdw_rt5677_dais), 404 .dapm_widgets = bdw_rt5677_widgets, 405 .num_dapm_widgets = ARRAY_SIZE(bdw_rt5677_widgets), 406 .dapm_routes = bdw_rt5677_map, 407 .num_dapm_routes = ARRAY_SIZE(bdw_rt5677_map), 408 .controls = bdw_rt5677_controls, 409 .num_controls = ARRAY_SIZE(bdw_rt5677_controls), 410 .fully_routed = true, 411 .suspend_pre = bdw_rt5677_suspend_pre, 412 .resume_post = bdw_rt5677_resume_post, 413 }; 414 415 static int bdw_rt5677_probe(struct platform_device *pdev) 416 { 417 struct bdw_rt5677_priv *bdw_rt5677; 418 struct snd_soc_acpi_mach *mach; 419 int ret; 420 421 bdw_rt5677_card.dev = &pdev->dev; 422 423 /* Allocate driver private struct */ 424 bdw_rt5677 = devm_kzalloc(&pdev->dev, sizeof(struct bdw_rt5677_priv), 425 GFP_KERNEL); 426 if (!bdw_rt5677) { 427 dev_err(&pdev->dev, "Can't allocate bdw_rt5677\n"); 428 return -ENOMEM; 429 } 430 431 /* override plaform name, if required */ 432 mach = pdev->dev.platform_data; 433 ret = snd_soc_fixup_dai_links_platform_name(&bdw_rt5677_card, 434 mach->mach_params.platform); 435 if (ret) 436 return ret; 437 438 /* set card and driver name */ 439 if (snd_soc_acpi_sof_parent(&pdev->dev)) { 440 bdw_rt5677_card.name = SOF_CARD_NAME; 441 bdw_rt5677_card.driver_name = SOF_DRIVER_NAME; 442 } else { 443 bdw_rt5677_card.name = CARD_NAME; 444 bdw_rt5677_card.driver_name = DRIVER_NAME; 445 } 446 447 snd_soc_card_set_drvdata(&bdw_rt5677_card, bdw_rt5677); 448 449 return devm_snd_soc_register_card(&pdev->dev, &bdw_rt5677_card); 450 } 451 452 static struct platform_driver bdw_rt5677_audio = { 453 .probe = bdw_rt5677_probe, 454 .driver = { 455 .name = "bdw-rt5677", 456 .pm = &snd_soc_pm_ops 457 }, 458 }; 459 460 module_platform_driver(bdw_rt5677_audio) 461 462 /* Module information */ 463 MODULE_AUTHOR("Ben Zhang"); 464 MODULE_DESCRIPTION("Intel Broadwell RT5677 machine driver"); 465 MODULE_LICENSE("GPL v2"); 466 MODULE_ALIAS("platform:bdw-rt5677"); 467