1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *  cht-bsw-max98090.c - ASoc Machine driver for Intel Cherryview-based
4  *  platforms Cherrytrail and Braswell, with max98090 & TI codec.
5  *
6  *  Copyright (C) 2015 Intel Corp
7  *  Author: Fang, Yang A <yang.a.fang@intel.com>
8  *  This file is modified from cht_bsw_rt5645.c
9  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
10  *
11  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
12  */
13 
14 #include <linux/dmi.h>
15 #include <linux/gpio/consumer.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/slab.h>
19 #include <linux/acpi.h>
20 #include <linux/clk.h>
21 #include <sound/pcm.h>
22 #include <sound/pcm_params.h>
23 #include <sound/soc.h>
24 #include <sound/soc-acpi.h>
25 #include <sound/jack.h>
26 #include "../../codecs/max98090.h"
27 #include "../atom/sst-atom-controls.h"
28 #include "../../codecs/ts3a227e.h"
29 
30 #define CHT_PLAT_CLK_3_HZ	19200000
31 #define CHT_CODEC_DAI	"HiFi"
32 
33 #define QUIRK_PMC_PLT_CLK_0				0x01
34 
35 struct cht_mc_private {
36 	struct clk *mclk;
37 	struct snd_soc_jack jack;
38 	bool ts3a227e_present;
39 	int quirks;
40 };
41 
42 static int platform_clock_control(struct snd_soc_dapm_widget *w,
43 					  struct snd_kcontrol *k, int  event)
44 {
45 	struct snd_soc_dapm_context *dapm = w->dapm;
46 	struct snd_soc_card *card = dapm->card;
47 	struct snd_soc_dai *codec_dai;
48 	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
49 	int ret;
50 
51 	/* See the comment in snd_cht_mc_probe() */
52 	if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
53 		return 0;
54 
55 	codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI);
56 	if (!codec_dai) {
57 		dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
58 		return -EIO;
59 	}
60 
61 	if (SND_SOC_DAPM_EVENT_ON(event)) {
62 		ret = clk_prepare_enable(ctx->mclk);
63 		if (ret < 0) {
64 			dev_err(card->dev,
65 				"could not configure MCLK state");
66 			return ret;
67 		}
68 	} else {
69 		clk_disable_unprepare(ctx->mclk);
70 	}
71 
72 	return 0;
73 }
74 
75 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
76 	SND_SOC_DAPM_HP("Headphone", NULL),
77 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
78 	SND_SOC_DAPM_MIC("Int Mic", NULL),
79 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
80 	SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
81 			    platform_clock_control, SND_SOC_DAPM_PRE_PMU |
82 			    SND_SOC_DAPM_POST_PMD),
83 };
84 
85 static const struct snd_soc_dapm_route cht_audio_map[] = {
86 	{"IN34", NULL, "Headset Mic"},
87 	{"Headset Mic", NULL, "MICBIAS"},
88 	{"DMICL", NULL, "Int Mic"},
89 	{"Headphone", NULL, "HPL"},
90 	{"Headphone", NULL, "HPR"},
91 	{"Ext Spk", NULL, "SPKL"},
92 	{"Ext Spk", NULL, "SPKR"},
93 	{"HiFi Playback", NULL, "ssp2 Tx"},
94 	{"ssp2 Tx", NULL, "codec_out0"},
95 	{"ssp2 Tx", NULL, "codec_out1"},
96 	{"codec_in0", NULL, "ssp2 Rx" },
97 	{"codec_in1", NULL, "ssp2 Rx" },
98 	{"ssp2 Rx", NULL, "HiFi Capture"},
99 	{"Headphone", NULL, "Platform Clock"},
100 	{"Headset Mic", NULL, "Platform Clock"},
101 	{"Int Mic", NULL, "Platform Clock"},
102 	{"Ext Spk", NULL, "Platform Clock"},
103 };
104 
105 static const struct snd_kcontrol_new cht_mc_controls[] = {
106 	SOC_DAPM_PIN_SWITCH("Headphone"),
107 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
108 	SOC_DAPM_PIN_SWITCH("Int Mic"),
109 	SOC_DAPM_PIN_SWITCH("Ext Spk"),
110 };
111 
112 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
113 			     struct snd_pcm_hw_params *params)
114 {
115 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
116 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
117 	int ret;
118 
119 	ret = snd_soc_dai_set_sysclk(codec_dai, M98090_REG_SYSTEM_CLOCK,
120 				     CHT_PLAT_CLK_3_HZ, SND_SOC_CLOCK_IN);
121 	if (ret < 0) {
122 		dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
123 		return ret;
124 	}
125 
126 	return 0;
127 }
128 
129 static int cht_ti_jack_event(struct notifier_block *nb,
130 		unsigned long event, void *data)
131 {
132 	struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
133 	struct snd_soc_dapm_context *dapm = &jack->card->dapm;
134 
135 	if (event & SND_JACK_MICROPHONE) {
136 		snd_soc_dapm_force_enable_pin(dapm, "SHDN");
137 		snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
138 		snd_soc_dapm_sync(dapm);
139 	} else {
140 		snd_soc_dapm_disable_pin(dapm, "MICBIAS");
141 		snd_soc_dapm_disable_pin(dapm, "SHDN");
142 		snd_soc_dapm_sync(dapm);
143 	}
144 
145 	return 0;
146 }
147 
148 static struct notifier_block cht_jack_nb = {
149 	.notifier_call = cht_ti_jack_event,
150 };
151 
152 static struct snd_soc_jack_pin hs_jack_pins[] = {
153 	{
154 		.pin	= "Headphone",
155 		.mask	= SND_JACK_HEADPHONE,
156 	},
157 	{
158 		.pin	= "Headset Mic",
159 		.mask	= SND_JACK_MICROPHONE,
160 	},
161 };
162 
163 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
164 	{
165 		.name		= "hp",
166 		.report		= SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
167 		.debounce_time	= 200,
168 	},
169 	{
170 		.name		= "mic",
171 		.invert		= 1,
172 		.report		= SND_JACK_MICROPHONE,
173 		.debounce_time	= 200,
174 	},
175 };
176 
177 static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
178 static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
179 
180 static const struct acpi_gpio_mapping acpi_max98090_gpios[] = {
181 	{ "hp-gpios", &hp_gpios, 1 },
182 	{ "mic-gpios", &mic_gpios, 1 },
183 	{},
184 };
185 
186 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
187 {
188 	int ret;
189 	int jack_type;
190 	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
191 	struct snd_soc_jack *jack = &ctx->jack;
192 
193 	if (ctx->ts3a227e_present) {
194 		/*
195 		 * The jack has already been created in the
196 		 * cht_max98090_headset_init() function.
197 		 */
198 		snd_soc_jack_notifier_register(jack, &cht_jack_nb);
199 		return 0;
200 	}
201 
202 	jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
203 
204 	ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
205 				    jack_type, jack,
206 				    hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
207 	if (ret) {
208 		dev_err(runtime->dev, "Headset Jack creation failed %d\n", ret);
209 		return ret;
210 	}
211 
212 	ret = snd_soc_jack_add_gpiods(runtime->card->dev->parent, jack,
213 				      ARRAY_SIZE(hs_jack_gpios),
214 				      hs_jack_gpios);
215 	if (ret) {
216 		/*
217 		 * flag error but don't bail if jack detect is broken
218 		 * due to platform issues or bad BIOS/configuration
219 		 */
220 		dev_err(runtime->dev,
221 			"jack detection gpios not added, error %d\n", ret);
222 	}
223 
224 	/* See the comment in snd_cht_mc_probe() */
225 	if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
226 		return 0;
227 
228 	/*
229 	 * The firmware might enable the clock at
230 	 * boot (this information may or may not
231 	 * be reflected in the enable clock register).
232 	 * To change the rate we must disable the clock
233 	 * first to cover these cases. Due to common
234 	 * clock framework restrictions that do not allow
235 	 * to disable a clock that has not been enabled,
236 	 * we need to enable the clock first.
237 	 */
238 	ret = clk_prepare_enable(ctx->mclk);
239 	if (!ret)
240 		clk_disable_unprepare(ctx->mclk);
241 
242 	ret = clk_set_rate(ctx->mclk, CHT_PLAT_CLK_3_HZ);
243 
244 	if (ret)
245 		dev_err(runtime->dev, "unable to set MCLK rate\n");
246 
247 	return ret;
248 }
249 
250 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
251 			    struct snd_pcm_hw_params *params)
252 {
253 	struct snd_interval *rate = hw_param_interval(params,
254 			SNDRV_PCM_HW_PARAM_RATE);
255 	struct snd_interval *channels = hw_param_interval(params,
256 						SNDRV_PCM_HW_PARAM_CHANNELS);
257 	int ret = 0;
258 	unsigned int fmt = 0;
259 
260 	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 16);
261 	if (ret < 0) {
262 		dev_err(rtd->dev, "can't set cpu_dai slot fmt: %d\n", ret);
263 		return ret;
264 	}
265 
266 	fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
267 				| SND_SOC_DAIFMT_CBS_CFS;
268 
269 	ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0), fmt);
270 	if (ret < 0) {
271 		dev_err(rtd->dev, "can't set cpu_dai set fmt: %d\n", ret);
272 		return ret;
273 	}
274 
275 	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
276 	rate->min = rate->max = 48000;
277 	channels->min = channels->max = 2;
278 
279 	/* set SSP2 to 16-bit */
280 	params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
281 	return 0;
282 }
283 
284 static int cht_aif1_startup(struct snd_pcm_substream *substream)
285 {
286 	return snd_pcm_hw_constraint_single(substream->runtime,
287 			SNDRV_PCM_HW_PARAM_RATE, 48000);
288 }
289 
290 static int cht_max98090_headset_init(struct snd_soc_component *component)
291 {
292 	struct snd_soc_card *card = component->card;
293 	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
294 	struct snd_soc_jack *jack = &ctx->jack;
295 	int jack_type;
296 	int ret;
297 
298 	/*
299 	 * TI supports 4 butons headset detection
300 	 * KEY_MEDIA
301 	 * KEY_VOICECOMMAND
302 	 * KEY_VOLUMEUP
303 	 * KEY_VOLUMEDOWN
304 	 */
305 	jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
306 		    SND_JACK_BTN_0 | SND_JACK_BTN_1 |
307 		    SND_JACK_BTN_2 | SND_JACK_BTN_3;
308 
309 	ret = snd_soc_card_jack_new(card, "Headset Jack", jack_type,
310 				    jack, NULL, 0);
311 	if (ret) {
312 		dev_err(card->dev, "Headset Jack creation failed %d\n", ret);
313 		return ret;
314 	}
315 
316 	return ts3a227e_enable_jack_detect(component, jack);
317 }
318 
319 static const struct snd_soc_ops cht_aif1_ops = {
320 	.startup = cht_aif1_startup,
321 };
322 
323 static const struct snd_soc_ops cht_be_ssp2_ops = {
324 	.hw_params = cht_aif1_hw_params,
325 };
326 
327 static struct snd_soc_aux_dev cht_max98090_headset_dev = {
328 	.dlc = COMP_AUX("i2c-104C227E:00"),
329 	.init = cht_max98090_headset_init,
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-193C9890:00", "HiFi")));
345 
346 SND_SOC_DAILINK_DEF(platform,
347 	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
348 
349 static struct snd_soc_dai_link cht_dailink[] = {
350 	[MERR_DPCM_AUDIO] = {
351 		.name = "Audio Port",
352 		.stream_name = "Audio",
353 		.nonatomic = true,
354 		.dynamic = 1,
355 		.dpcm_playback = 1,
356 		.dpcm_capture = 1,
357 		.ops = &cht_aif1_ops,
358 		SND_SOC_DAILINK_REG(media, dummy, platform),
359 	},
360 	[MERR_DPCM_DEEP_BUFFER] = {
361 		.name = "Deep-Buffer Audio Port",
362 		.stream_name = "Deep-Buffer Audio",
363 		.nonatomic = true,
364 		.dynamic = 1,
365 		.dpcm_playback = 1,
366 		.ops = &cht_aif1_ops,
367 		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
368 	},
369 	/* back ends */
370 	{
371 		.name = "SSP2-Codec",
372 		.id = 0,
373 		.no_pcm = 1,
374 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
375 					| SND_SOC_DAIFMT_CBS_CFS,
376 		.init = cht_codec_init,
377 		.be_hw_params_fixup = cht_codec_fixup,
378 		.dpcm_playback = 1,
379 		.dpcm_capture = 1,
380 		.ops = &cht_be_ssp2_ops,
381 		SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
382 	},
383 };
384 
385 /* use space before codec name to simplify card ID, and simplify driver name */
386 #define SOF_CARD_NAME "bytcht max98090" /* card name will be 'sof-bytcht max98090 */
387 #define SOF_DRIVER_NAME "SOF"
388 
389 #define CARD_NAME "chtmax98090"
390 #define DRIVER_NAME NULL /* card name will be used for driver name */
391 
392 /* SoC card */
393 static struct snd_soc_card snd_soc_card_cht = {
394 	.owner = THIS_MODULE,
395 	.dai_link = cht_dailink,
396 	.num_links = ARRAY_SIZE(cht_dailink),
397 	.aux_dev = &cht_max98090_headset_dev,
398 	.num_aux_devs = 1,
399 	.dapm_widgets = cht_dapm_widgets,
400 	.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
401 	.dapm_routes = cht_audio_map,
402 	.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
403 	.controls = cht_mc_controls,
404 	.num_controls = ARRAY_SIZE(cht_mc_controls),
405 };
406 
407 static const struct dmi_system_id cht_max98090_quirk_table[] = {
408 	{
409 		/* Banjo model Chromebook */
410 		.matches = {
411 			DMI_MATCH(DMI_PRODUCT_NAME, "Banjo"),
412 		},
413 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
414 	},
415 	{
416 		/* Candy model Chromebook */
417 		.matches = {
418 			DMI_MATCH(DMI_PRODUCT_NAME, "Candy"),
419 		},
420 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
421 	},
422 	{
423 		/* Clapper model Chromebook */
424 		.matches = {
425 			DMI_MATCH(DMI_PRODUCT_NAME, "Clapper"),
426 		},
427 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
428 	},
429 	{
430 		/* Cyan model Chromebook */
431 		.matches = {
432 			DMI_MATCH(DMI_PRODUCT_NAME, "Cyan"),
433 		},
434 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
435 	},
436 	{
437 		/* Enguarde model Chromebook */
438 		.matches = {
439 			DMI_MATCH(DMI_PRODUCT_NAME, "Enguarde"),
440 		},
441 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
442 	},
443 	{
444 		/* Glimmer model Chromebook */
445 		.matches = {
446 			DMI_MATCH(DMI_PRODUCT_NAME, "Glimmer"),
447 		},
448 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
449 	},
450 	{
451 		/* Gnawty model Chromebook (Acer Chromebook CB3-111) */
452 		.matches = {
453 			DMI_MATCH(DMI_PRODUCT_NAME, "Gnawty"),
454 		},
455 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
456 	},
457 	{
458 		/* Heli model Chromebook */
459 		.matches = {
460 			DMI_MATCH(DMI_PRODUCT_NAME, "Heli"),
461 		},
462 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
463 	},
464 	{
465 		/* Kip model Chromebook */
466 		.matches = {
467 			DMI_MATCH(DMI_PRODUCT_NAME, "Kip"),
468 		},
469 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
470 	},
471 	{
472 		/* Ninja model Chromebook */
473 		.matches = {
474 			DMI_MATCH(DMI_PRODUCT_NAME, "Ninja"),
475 		},
476 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
477 	},
478 	{
479 		/* Orco model Chromebook */
480 		.matches = {
481 			DMI_MATCH(DMI_PRODUCT_NAME, "Orco"),
482 		},
483 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
484 	},
485 	{
486 		/* Quawks model Chromebook */
487 		.matches = {
488 			DMI_MATCH(DMI_PRODUCT_NAME, "Quawks"),
489 		},
490 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
491 	},
492 	{
493 		/* Rambi model Chromebook */
494 		.matches = {
495 			DMI_MATCH(DMI_PRODUCT_NAME, "Rambi"),
496 		},
497 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
498 	},
499 	{
500 		/* Squawks model Chromebook */
501 		.matches = {
502 			DMI_MATCH(DMI_PRODUCT_NAME, "Squawks"),
503 		},
504 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
505 	},
506 	{
507 		/* Sumo model Chromebook */
508 		.matches = {
509 			DMI_MATCH(DMI_PRODUCT_NAME, "Sumo"),
510 		},
511 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
512 	},
513 	{
514 		/* Swanky model Chromebook (Toshiba Chromebook 2) */
515 		.matches = {
516 			DMI_MATCH(DMI_PRODUCT_NAME, "Swanky"),
517 		},
518 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
519 	},
520 	{
521 		/* Winky model Chromebook */
522 		.matches = {
523 			DMI_MATCH(DMI_PRODUCT_NAME, "Winky"),
524 		},
525 		.driver_data = (void *)QUIRK_PMC_PLT_CLK_0,
526 	},
527 	{}
528 };
529 
530 static int snd_cht_mc_probe(struct platform_device *pdev)
531 {
532 	const struct dmi_system_id *dmi_id;
533 	struct device *dev = &pdev->dev;
534 	int ret_val = 0;
535 	struct cht_mc_private *drv;
536 	const char *mclk_name;
537 	struct snd_soc_acpi_mach *mach;
538 	const char *platform_name;
539 	bool sof_parent;
540 
541 	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
542 	if (!drv)
543 		return -ENOMEM;
544 
545 	dmi_id = dmi_first_match(cht_max98090_quirk_table);
546 	if (dmi_id)
547 		drv->quirks = (unsigned long)dmi_id->driver_data;
548 
549 	drv->ts3a227e_present = acpi_dev_found("104C227E");
550 	if (!drv->ts3a227e_present) {
551 		/* no need probe TI jack detection chip */
552 		snd_soc_card_cht.aux_dev = NULL;
553 		snd_soc_card_cht.num_aux_devs = 0;
554 
555 		ret_val = devm_acpi_dev_add_driver_gpios(dev->parent,
556 							 acpi_max98090_gpios);
557 		if (ret_val)
558 			dev_dbg(dev, "Unable to add GPIO mapping table\n");
559 	}
560 
561 	/* override plaform name, if required */
562 	snd_soc_card_cht.dev = &pdev->dev;
563 	mach = pdev->dev.platform_data;
564 	platform_name = mach->mach_params.platform;
565 
566 	ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
567 							platform_name);
568 	if (ret_val)
569 		return ret_val;
570 
571 	/* register the soc card */
572 	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
573 
574 	if (drv->quirks & QUIRK_PMC_PLT_CLK_0)
575 		mclk_name = "pmc_plt_clk_0";
576 	else
577 		mclk_name = "pmc_plt_clk_3";
578 
579 	drv->mclk = devm_clk_get(&pdev->dev, mclk_name);
580 	if (IS_ERR(drv->mclk)) {
581 		dev_err(&pdev->dev,
582 			"Failed to get MCLK from %s: %ld\n",
583 			mclk_name, PTR_ERR(drv->mclk));
584 		return PTR_ERR(drv->mclk);
585 	}
586 
587 	/*
588 	 * Boards which have the MAX98090's clk connected to clk_0 do not seem
589 	 * to like it if we muck with the clock. If we disable the clock when
590 	 * it is unused we get "max98090 i2c-193C9890:00: PLL unlocked" errors
591 	 * and the PLL never seems to lock again.
592 	 * So for these boards we enable it here once and leave it at that.
593 	 */
594 	if (drv->quirks & QUIRK_PMC_PLT_CLK_0) {
595 		ret_val = clk_prepare_enable(drv->mclk);
596 		if (ret_val < 0) {
597 			dev_err(&pdev->dev, "MCLK enable error: %d\n", ret_val);
598 			return ret_val;
599 		}
600 	}
601 
602 	sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
603 
604 	/* set card and driver name */
605 	if (sof_parent) {
606 		snd_soc_card_cht.name = SOF_CARD_NAME;
607 		snd_soc_card_cht.driver_name = SOF_DRIVER_NAME;
608 	} else {
609 		snd_soc_card_cht.name = CARD_NAME;
610 		snd_soc_card_cht.driver_name = DRIVER_NAME;
611 	}
612 
613 	/* set pm ops */
614 	if (sof_parent)
615 		dev->driver->pm = &snd_soc_pm_ops;
616 
617 	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
618 	if (ret_val) {
619 		dev_err(&pdev->dev,
620 			"snd_soc_register_card failed %d\n", ret_val);
621 		return ret_val;
622 	}
623 	platform_set_drvdata(pdev, &snd_soc_card_cht);
624 	return ret_val;
625 }
626 
627 static int snd_cht_mc_remove(struct platform_device *pdev)
628 {
629 	struct snd_soc_card *card = platform_get_drvdata(pdev);
630 	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
631 
632 	if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
633 		clk_disable_unprepare(ctx->mclk);
634 
635 	return 0;
636 }
637 
638 static struct platform_driver snd_cht_mc_driver = {
639 	.driver = {
640 		.name = "cht-bsw-max98090",
641 	},
642 	.probe = snd_cht_mc_probe,
643 	.remove = snd_cht_mc_remove,
644 };
645 
646 module_platform_driver(snd_cht_mc_driver)
647 
648 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
649 MODULE_AUTHOR("Fang, Yang A <yang.a.fang@intel.com>");
650 MODULE_LICENSE("GPL v2");
651 MODULE_ALIAS("platform:cht-bsw-max98090");
652