1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * bytcr_wm5102.c - ASoc Machine driver for Intel Baytrail platforms with a 4 * Wolfson Microelectronics WM5102 codec 5 * 6 * Copyright (C) 2020 Hans de Goede <hdegoede@redhat.com> 7 * Loosely based on bytcr_rt5640.c which is: 8 * Copyright (C) 2014-2020 Intel Corp 9 * Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com> 10 */ 11 12 #include <linux/acpi.h> 13 #include <linux/clk.h> 14 #include <linux/device.h> 15 #include <linux/init.h> 16 #include <linux/module.h> 17 #include <linux/moduleparam.h> 18 #include <linux/platform_device.h> 19 #include <linux/slab.h> 20 #include <linux/spi/spi.h> 21 #include <sound/jack.h> 22 #include <sound/pcm.h> 23 #include <sound/pcm_params.h> 24 #include <sound/soc.h> 25 #include <sound/soc-acpi.h> 26 #include "../../codecs/wm5102.h" 27 #include "../atom/sst-atom-controls.h" 28 29 #define MCLK_FREQ 25000000 30 31 #define WM5102_MAX_SYSCLK_4K 49152000 /* max sysclk for 4K family */ 32 #define WM5102_MAX_SYSCLK_11025 45158400 /* max sysclk for 11.025K family */ 33 34 struct byt_wm5102_private { 35 struct snd_soc_jack jack; 36 struct clk *mclk; 37 struct gpio_desc *spkvdd_en_gpio; 38 }; 39 40 static int byt_wm5102_spkvdd_power_event(struct snd_soc_dapm_widget *w, 41 struct snd_kcontrol *kcontrol, int event) 42 { 43 struct snd_soc_card *card = w->dapm->card; 44 struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); 45 46 gpiod_set_value_cansleep(priv->spkvdd_en_gpio, 47 !!SND_SOC_DAPM_EVENT_ON(event)); 48 49 return 0; 50 } 51 52 static int byt_wm5102_prepare_and_enable_pll1(struct snd_soc_dai *codec_dai, int rate) 53 { 54 struct snd_soc_component *codec_component = codec_dai->component; 55 int sr_mult = ((rate % 4000) == 0) ? 56 (WM5102_MAX_SYSCLK_4K / rate) : 57 (WM5102_MAX_SYSCLK_11025 / rate); 58 int ret; 59 60 /* Reset FLL1 */ 61 snd_soc_dai_set_pll(codec_dai, WM5102_FLL1_REFCLK, ARIZONA_FLL_SRC_NONE, 0, 0); 62 snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0); 63 64 /* Configure the FLL1 PLL before selecting it */ 65 ret = snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_CLK_SRC_MCLK1, 66 MCLK_FREQ, rate * sr_mult); 67 if (ret) { 68 dev_err(codec_component->dev, "Error setting PLL: %d\n", ret); 69 return ret; 70 } 71 72 ret = snd_soc_component_set_sysclk(codec_component, ARIZONA_CLK_SYSCLK, 73 ARIZONA_CLK_SRC_FLL1, rate * sr_mult, 74 SND_SOC_CLOCK_IN); 75 if (ret) { 76 dev_err(codec_component->dev, "Error setting SYSCLK: %d\n", ret); 77 return ret; 78 } 79 80 ret = snd_soc_dai_set_sysclk(codec_dai, ARIZONA_CLK_SYSCLK, 81 rate * 512, SND_SOC_CLOCK_IN); 82 if (ret) { 83 dev_err(codec_component->dev, "Error setting clock: %d\n", ret); 84 return ret; 85 } 86 87 return 0; 88 } 89 90 static int platform_clock_control(struct snd_soc_dapm_widget *w, 91 struct snd_kcontrol *k, int event) 92 { 93 struct snd_soc_dapm_context *dapm = w->dapm; 94 struct snd_soc_card *card = dapm->card; 95 struct snd_soc_dai *codec_dai; 96 struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); 97 int ret; 98 99 codec_dai = snd_soc_card_get_codec_dai(card, "wm5102-aif1"); 100 if (!codec_dai) { 101 dev_err(card->dev, "Error codec DAI not found\n"); 102 return -EIO; 103 } 104 105 if (SND_SOC_DAPM_EVENT_ON(event)) { 106 ret = clk_prepare_enable(priv->mclk); 107 if (ret) { 108 dev_err(card->dev, "Error enabling MCLK: %d\n", ret); 109 return ret; 110 } 111 ret = byt_wm5102_prepare_and_enable_pll1(codec_dai, 48000); 112 if (ret) { 113 dev_err(card->dev, "Error setting codec sysclk: %d\n", ret); 114 return ret; 115 } 116 } else { 117 /* 118 * The WM5102 has a separate 32KHz clock for jack-detect 119 * so we can disable the PLL, followed by disabling the 120 * platform clock which is the source-clock for the PLL. 121 */ 122 snd_soc_dai_set_pll(codec_dai, WM5102_FLL1, ARIZONA_FLL_SRC_NONE, 0, 0); 123 clk_disable_unprepare(priv->mclk); 124 } 125 126 return 0; 127 } 128 129 static const struct snd_soc_dapm_widget byt_wm5102_widgets[] = { 130 SND_SOC_DAPM_HP("Headphone", NULL), 131 SND_SOC_DAPM_MIC("Headset Mic", NULL), 132 SND_SOC_DAPM_MIC("Internal Mic", NULL), 133 SND_SOC_DAPM_SPK("Speaker", NULL), 134 SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, 135 platform_clock_control, SND_SOC_DAPM_PRE_PMU | 136 SND_SOC_DAPM_POST_PMD), 137 SND_SOC_DAPM_SUPPLY("Speaker VDD", SND_SOC_NOPM, 0, 0, 138 byt_wm5102_spkvdd_power_event, 139 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU), 140 }; 141 142 static const struct snd_soc_dapm_route byt_wm5102_audio_map[] = { 143 {"Headphone", NULL, "Platform Clock"}, 144 {"Headset Mic", NULL, "Platform Clock"}, 145 {"Internal Mic", NULL, "Platform Clock"}, 146 {"Speaker", NULL, "Platform Clock"}, 147 148 {"Speaker", NULL, "SPKOUTLP"}, 149 {"Speaker", NULL, "SPKOUTLN"}, 150 {"Speaker", NULL, "SPKOUTRP"}, 151 {"Speaker", NULL, "SPKOUTRN"}, 152 {"Speaker", NULL, "Speaker VDD"}, 153 154 {"Headphone", NULL, "HPOUT1L"}, 155 {"Headphone", NULL, "HPOUT1R"}, 156 157 {"Internal Mic", NULL, "MICBIAS3"}, 158 {"IN3L", NULL, "Internal Mic"}, 159 160 /* 161 * The Headset Mix uses MICBIAS1 or 2 depending on if a CTIA/OMTP Headset 162 * is connected, as the MICBIAS is applied after the CTIA/OMTP cross-switch. 163 */ 164 {"Headset Mic", NULL, "MICBIAS1"}, 165 {"Headset Mic", NULL, "MICBIAS2"}, 166 {"IN1L", NULL, "Headset Mic"}, 167 168 {"AIF1 Playback", NULL, "ssp0 Tx"}, 169 {"ssp0 Tx", NULL, "modem_out"}, 170 171 {"modem_in", NULL, "ssp0 Rx"}, 172 {"ssp0 Rx", NULL, "AIF1 Capture"}, 173 }; 174 175 static const struct snd_kcontrol_new byt_wm5102_controls[] = { 176 SOC_DAPM_PIN_SWITCH("Headphone"), 177 SOC_DAPM_PIN_SWITCH("Headset Mic"), 178 SOC_DAPM_PIN_SWITCH("Internal Mic"), 179 SOC_DAPM_PIN_SWITCH("Speaker"), 180 }; 181 182 static struct snd_soc_jack_pin byt_wm5102_pins[] = { 183 { 184 .pin = "Headphone", 185 .mask = SND_JACK_HEADPHONE, 186 }, 187 { 188 .pin = "Headset Mic", 189 .mask = SND_JACK_MICROPHONE, 190 }, 191 }; 192 193 static int byt_wm5102_init(struct snd_soc_pcm_runtime *runtime) 194 { 195 struct snd_soc_card *card = runtime->card; 196 struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); 197 struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component; 198 int ret, jack_type; 199 200 card->dapm.idle_bias_off = true; 201 202 ret = snd_soc_add_card_controls(card, byt_wm5102_controls, 203 ARRAY_SIZE(byt_wm5102_controls)); 204 if (ret) { 205 dev_err(card->dev, "Error adding card controls: %d\n", ret); 206 return ret; 207 } 208 209 /* 210 * The firmware might enable the clock at boot (this information 211 * may or may not be reflected in the enable clock register). 212 * To change the rate we must disable the clock first to cover these 213 * cases. Due to common clock framework restrictions that do not allow 214 * to disable a clock that has not been enabled, we need to enable 215 * the clock first. 216 */ 217 ret = clk_prepare_enable(priv->mclk); 218 if (!ret) 219 clk_disable_unprepare(priv->mclk); 220 221 ret = clk_set_rate(priv->mclk, MCLK_FREQ); 222 if (ret) { 223 dev_err(card->dev, "Error setting MCLK rate: %d\n", ret); 224 return ret; 225 } 226 227 jack_type = ARIZONA_JACK_MASK | SND_JACK_BTN_0 | SND_JACK_BTN_1 | 228 SND_JACK_BTN_2 | SND_JACK_BTN_3; 229 ret = snd_soc_card_jack_new(card, "Headset", jack_type, 230 &priv->jack, byt_wm5102_pins, 231 ARRAY_SIZE(byt_wm5102_pins)); 232 if (ret) { 233 dev_err(card->dev, "Error creating jack: %d\n", ret); 234 return ret; 235 } 236 237 snd_soc_component_set_jack(component, &priv->jack, NULL); 238 239 return 0; 240 } 241 242 static int byt_wm5102_codec_fixup(struct snd_soc_pcm_runtime *rtd, 243 struct snd_pcm_hw_params *params) 244 { 245 struct snd_interval *rate = hw_param_interval(params, 246 SNDRV_PCM_HW_PARAM_RATE); 247 struct snd_interval *channels = hw_param_interval(params, 248 SNDRV_PCM_HW_PARAM_CHANNELS); 249 int ret; 250 251 /* The DSP will covert the FE rate to 48k, stereo */ 252 rate->min = 48000; 253 rate->max = 48000; 254 channels->min = 2; 255 channels->max = 2; 256 257 /* set SSP0 to 16-bit */ 258 params_set_format(params, SNDRV_PCM_FORMAT_S16_LE); 259 260 /* 261 * Default mode for SSP configuration is TDM 4 slot, override config 262 * with explicit setting to I2S 2ch 16-bit. The word length is set with 263 * dai_set_tdm_slot() since there is no other API exposed 264 */ 265 ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0), 266 SND_SOC_DAIFMT_I2S | 267 SND_SOC_DAIFMT_NB_NF | 268 SND_SOC_DAIFMT_CBS_CFS); 269 if (ret) { 270 dev_err(rtd->dev, "Error setting format to I2S: %d\n", ret); 271 return ret; 272 } 273 274 ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 16); 275 if (ret) { 276 dev_err(rtd->dev, "Error setting I2S config: %d\n", ret); 277 return ret; 278 } 279 280 return 0; 281 } 282 283 static int byt_wm5102_aif1_startup(struct snd_pcm_substream *substream) 284 { 285 return snd_pcm_hw_constraint_single(substream->runtime, 286 SNDRV_PCM_HW_PARAM_RATE, 48000); 287 } 288 289 static const struct snd_soc_ops byt_wm5102_aif1_ops = { 290 .startup = byt_wm5102_aif1_startup, 291 }; 292 293 SND_SOC_DAILINK_DEF(dummy, 294 DAILINK_COMP_ARRAY(COMP_DUMMY())); 295 296 SND_SOC_DAILINK_DEF(media, 297 DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai"))); 298 299 SND_SOC_DAILINK_DEF(deepbuffer, 300 DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai"))); 301 302 SND_SOC_DAILINK_DEF(ssp0_port, 303 DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port"))); 304 305 SND_SOC_DAILINK_DEF(ssp0_codec, 306 DAILINK_COMP_ARRAY(COMP_CODEC( 307 /* 308 * Note there is no need to overwrite the codec-name as is done in 309 * other bytcr machine drivers, because the codec is a MFD child-dev. 310 */ 311 "wm5102-codec", 312 "wm5102-aif1"))); 313 314 SND_SOC_DAILINK_DEF(platform, 315 DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform"))); 316 317 static struct snd_soc_dai_link byt_wm5102_dais[] = { 318 [MERR_DPCM_AUDIO] = { 319 .name = "Baytrail Audio Port", 320 .stream_name = "Baytrail Audio", 321 .nonatomic = true, 322 .dynamic = 1, 323 .dpcm_playback = 1, 324 .dpcm_capture = 1, 325 .ops = &byt_wm5102_aif1_ops, 326 SND_SOC_DAILINK_REG(media, dummy, platform), 327 328 }, 329 [MERR_DPCM_DEEP_BUFFER] = { 330 .name = "Deep-Buffer Audio Port", 331 .stream_name = "Deep-Buffer Audio", 332 .nonatomic = true, 333 .dynamic = 1, 334 .dpcm_playback = 1, 335 .ops = &byt_wm5102_aif1_ops, 336 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform), 337 }, 338 /* back ends */ 339 { 340 /* 341 * This must be named SSP2-Codec even though this machine driver 342 * always uses SSP0. Most machine drivers support both and dynamically 343 * update the dailink to point to SSP0 or SSP2, while keeping the name 344 * as "SSP2-Codec". The SOF tplg files hardcode the "SSP2-Codec" even 345 * in the byt-foo-ssp0.tplg versions because the other machine-drivers 346 * use "SSP2-Codec" even when SSP0 is used. 347 */ 348 .name = "SSP2-Codec", 349 .id = 0, 350 .no_pcm = 1, 351 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF 352 | SND_SOC_DAIFMT_CBS_CFS, 353 .be_hw_params_fixup = byt_wm5102_codec_fixup, 354 .dpcm_playback = 1, 355 .dpcm_capture = 1, 356 .init = byt_wm5102_init, 357 SND_SOC_DAILINK_REG(ssp0_port, ssp0_codec, platform), 358 }, 359 }; 360 361 /* use space before codec name to simplify card ID, and simplify driver name */ 362 #define SOF_CARD_NAME "bytcht wm5102" /* card name will be 'sof-bytcht wm5102' */ 363 #define SOF_DRIVER_NAME "SOF" 364 365 #define CARD_NAME "bytcr-wm5102" 366 #define DRIVER_NAME NULL /* card name will be used for driver name */ 367 368 /* SoC card */ 369 static struct snd_soc_card byt_wm5102_card = { 370 .owner = THIS_MODULE, 371 .dai_link = byt_wm5102_dais, 372 .num_links = ARRAY_SIZE(byt_wm5102_dais), 373 .dapm_widgets = byt_wm5102_widgets, 374 .num_dapm_widgets = ARRAY_SIZE(byt_wm5102_widgets), 375 .dapm_routes = byt_wm5102_audio_map, 376 .num_dapm_routes = ARRAY_SIZE(byt_wm5102_audio_map), 377 .fully_routed = true, 378 }; 379 380 static int snd_byt_wm5102_mc_probe(struct platform_device *pdev) 381 { 382 char codec_name[SND_ACPI_I2C_ID_LEN]; 383 struct device *dev = &pdev->dev; 384 struct byt_wm5102_private *priv; 385 struct snd_soc_acpi_mach *mach; 386 const char *platform_name; 387 struct acpi_device *adev; 388 struct device *codec_dev; 389 bool sof_parent; 390 int ret; 391 392 priv = devm_kzalloc(dev, sizeof(*priv), GFP_ATOMIC); 393 if (!priv) 394 return -ENOMEM; 395 396 /* Get MCLK */ 397 priv->mclk = devm_clk_get(dev, "pmc_plt_clk_3"); 398 if (IS_ERR(priv->mclk)) 399 return dev_err_probe(dev, PTR_ERR(priv->mclk), "getting pmc_plt_clk_3\n"); 400 401 /* 402 * Get speaker VDD enable GPIO: 403 * 1. Get codec-device-name 404 * 2. Get codec-device 405 * 3. Get GPIO from codec-device 406 */ 407 mach = dev->platform_data; 408 adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1); 409 if (!adev) { 410 dev_err(dev, "Error cannot find acpi-dev for codec\n"); 411 return -ENOENT; 412 } 413 snprintf(codec_name, sizeof(codec_name), "spi-%s", acpi_dev_name(adev)); 414 put_device(&adev->dev); 415 416 codec_dev = bus_find_device_by_name(&spi_bus_type, NULL, codec_name); 417 if (!codec_dev) 418 return -EPROBE_DEFER; 419 420 /* Note no devm_ here since we call gpiod_get on codec_dev rather then dev */ 421 priv->spkvdd_en_gpio = gpiod_get(codec_dev, "wlf,spkvdd-ena", GPIOD_OUT_LOW); 422 put_device(codec_dev); 423 424 if (IS_ERR(priv->spkvdd_en_gpio)) 425 return dev_err_probe(dev, PTR_ERR(priv->spkvdd_en_gpio), "getting spkvdd-GPIO\n"); 426 427 /* override platform name, if required */ 428 byt_wm5102_card.dev = dev; 429 platform_name = mach->mach_params.platform; 430 ret = snd_soc_fixup_dai_links_platform_name(&byt_wm5102_card, platform_name); 431 if (ret) 432 goto out_put_gpio; 433 434 /* set card and driver name and pm-ops */ 435 sof_parent = snd_soc_acpi_sof_parent(dev); 436 if (sof_parent) { 437 byt_wm5102_card.name = SOF_CARD_NAME; 438 byt_wm5102_card.driver_name = SOF_DRIVER_NAME; 439 dev->driver->pm = &snd_soc_pm_ops; 440 } else { 441 byt_wm5102_card.name = CARD_NAME; 442 byt_wm5102_card.driver_name = DRIVER_NAME; 443 } 444 445 snd_soc_card_set_drvdata(&byt_wm5102_card, priv); 446 ret = devm_snd_soc_register_card(dev, &byt_wm5102_card); 447 if (ret) { 448 dev_err_probe(dev, ret, "registering card\n"); 449 goto out_put_gpio; 450 } 451 452 platform_set_drvdata(pdev, &byt_wm5102_card); 453 return 0; 454 455 out_put_gpio: 456 gpiod_put(priv->spkvdd_en_gpio); 457 return ret; 458 } 459 460 static int snd_byt_wm5102_mc_remove(struct platform_device *pdev) 461 { 462 struct snd_soc_card *card = platform_get_drvdata(pdev); 463 struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card); 464 465 gpiod_put(priv->spkvdd_en_gpio); 466 return 0; 467 } 468 469 static struct platform_driver snd_byt_wm5102_mc_driver = { 470 .driver = { 471 .name = "bytcr_wm5102", 472 }, 473 .probe = snd_byt_wm5102_mc_probe, 474 .remove = snd_byt_wm5102_mc_remove, 475 }; 476 477 module_platform_driver(snd_byt_wm5102_mc_driver); 478 479 MODULE_DESCRIPTION("ASoC Baytrail with WM5102 codec machine driver"); 480 MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); 481 MODULE_LICENSE("GPL v2"); 482 MODULE_ALIAS("platform:bytcr_wm5102"); 483