xref: /openbmc/linux/sound/soc/codecs/cs35l32.c (revision 176bb179)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * cs35l32.c -- CS35L32 ALSA SoC audio driver
4  *
5  * Copyright 2014 CirrusLogic, Inc.
6  *
7  * Author: Brian Austin <brian.austin@cirrus.com>
8  */
9 
10 #include <linux/module.h>
11 #include <linux/moduleparam.h>
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/delay.h>
15 #include <linux/i2c.h>
16 #include <linux/gpio.h>
17 #include <linux/regmap.h>
18 #include <linux/slab.h>
19 #include <linux/platform_device.h>
20 #include <linux/regulator/consumer.h>
21 #include <linux/gpio/consumer.h>
22 #include <linux/of_device.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/soc.h>
27 #include <sound/soc-dapm.h>
28 #include <sound/initval.h>
29 #include <sound/tlv.h>
30 #include <dt-bindings/sound/cs35l32.h>
31 
32 #include "cs35l32.h"
33 #include "cirrus_legacy.h"
34 
35 #define CS35L32_NUM_SUPPLIES 2
36 static const char *const cs35l32_supply_names[CS35L32_NUM_SUPPLIES] = {
37 	"VA",
38 	"VP",
39 };
40 
41 struct  cs35l32_private {
42 	struct regmap *regmap;
43 	struct snd_soc_component *component;
44 	struct regulator_bulk_data supplies[CS35L32_NUM_SUPPLIES];
45 	struct cs35l32_platform_data pdata;
46 	struct gpio_desc *reset_gpio;
47 };
48 
49 static const struct reg_default cs35l32_reg_defaults[] = {
50 
51 	{ 0x06, 0x04 }, /* Power Ctl 1 */
52 	{ 0x07, 0xE8 }, /* Power Ctl 2 */
53 	{ 0x08, 0x40 }, /* Clock Ctl */
54 	{ 0x09, 0x20 }, /* Low Battery Threshold */
55 	{ 0x0A, 0x00 }, /* Voltage Monitor [RO] */
56 	{ 0x0B, 0x40 }, /* Conv Peak Curr Protection CTL */
57 	{ 0x0C, 0x07 }, /* IMON Scaling */
58 	{ 0x0D, 0x03 }, /* Audio/LED Pwr Manager */
59 	{ 0x0F, 0x20 }, /* Serial Port Control */
60 	{ 0x10, 0x14 }, /* Class D Amp CTL */
61 	{ 0x11, 0x00 }, /* Protection Release CTL */
62 	{ 0x12, 0xFF }, /* Interrupt Mask 1 */
63 	{ 0x13, 0xFF }, /* Interrupt Mask 2 */
64 	{ 0x14, 0xFF }, /* Interrupt Mask 3 */
65 	{ 0x19, 0x00 }, /* LED Flash Mode Current */
66 	{ 0x1A, 0x00 }, /* LED Movie Mode Current */
67 	{ 0x1B, 0x20 }, /* LED Flash Timer */
68 	{ 0x1C, 0x00 }, /* LED Flash Inhibit Current */
69 };
70 
cs35l32_readable_register(struct device * dev,unsigned int reg)71 static bool cs35l32_readable_register(struct device *dev, unsigned int reg)
72 {
73 	switch (reg) {
74 	case CS35L32_DEVID_AB ... CS35L32_AUDIO_LED_MNGR:
75 	case CS35L32_ADSP_CTL ... CS35L32_FLASH_INHIBIT:
76 		return true;
77 	default:
78 		return false;
79 	}
80 }
81 
cs35l32_volatile_register(struct device * dev,unsigned int reg)82 static bool cs35l32_volatile_register(struct device *dev, unsigned int reg)
83 {
84 	switch (reg) {
85 	case CS35L32_DEVID_AB ... CS35L32_REV_ID:
86 	case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
87 		return true;
88 	default:
89 		return false;
90 	}
91 }
92 
cs35l32_precious_register(struct device * dev,unsigned int reg)93 static bool cs35l32_precious_register(struct device *dev, unsigned int reg)
94 {
95 	switch (reg) {
96 	case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
97 		return true;
98 	default:
99 		return false;
100 	}
101 }
102 
103 static DECLARE_TLV_DB_SCALE(classd_ctl_tlv, 900, 300, 0);
104 
105 static const struct snd_kcontrol_new imon_ctl =
106 	SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 6, 1, 1);
107 
108 static const struct snd_kcontrol_new vmon_ctl =
109 	SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 7, 1, 1);
110 
111 static const struct snd_kcontrol_new vpmon_ctl =
112 	SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 5, 1, 1);
113 
114 static const struct snd_kcontrol_new cs35l32_snd_controls[] = {
115 	SOC_SINGLE_TLV("Speaker Volume", CS35L32_CLASSD_CTL,
116 		       3, 0x04, 1, classd_ctl_tlv),
117 	SOC_SINGLE("Zero Cross Switch", CS35L32_CLASSD_CTL, 2, 1, 0),
118 	SOC_SINGLE("Gain Manager Switch", CS35L32_AUDIO_LED_MNGR, 3, 1, 0),
119 };
120 
121 static const struct snd_soc_dapm_widget cs35l32_dapm_widgets[] = {
122 
123 	SND_SOC_DAPM_SUPPLY("BOOST", CS35L32_PWRCTL1, 2, 1, NULL, 0),
124 	SND_SOC_DAPM_OUT_DRV("Speaker", CS35L32_PWRCTL1, 7, 1, NULL, 0),
125 
126 	SND_SOC_DAPM_AIF_OUT("SDOUT", NULL, 0, CS35L32_PWRCTL2, 3, 1),
127 
128 	SND_SOC_DAPM_INPUT("VP"),
129 	SND_SOC_DAPM_INPUT("ISENSE"),
130 	SND_SOC_DAPM_INPUT("VSENSE"),
131 
132 	SND_SOC_DAPM_SWITCH("VMON ADC", CS35L32_PWRCTL2, 7, 1, &vmon_ctl),
133 	SND_SOC_DAPM_SWITCH("IMON ADC", CS35L32_PWRCTL2, 6, 1, &imon_ctl),
134 	SND_SOC_DAPM_SWITCH("VPMON ADC", CS35L32_PWRCTL2, 5, 1, &vpmon_ctl),
135 };
136 
137 static const struct snd_soc_dapm_route cs35l32_audio_map[] = {
138 
139 	{"Speaker", NULL, "BOOST"},
140 
141 	{"VMON ADC", NULL, "VSENSE"},
142 	{"IMON ADC", NULL, "ISENSE"},
143 	{"VPMON ADC", NULL, "VP"},
144 
145 	{"SDOUT", "Switch", "VMON ADC"},
146 	{"SDOUT",  "Switch", "IMON ADC"},
147 	{"SDOUT", "Switch", "VPMON ADC"},
148 
149 	{"Capture", NULL, "SDOUT"},
150 };
151 
cs35l32_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)152 static int cs35l32_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
153 {
154 	struct snd_soc_component *component = codec_dai->component;
155 
156 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
157 	case SND_SOC_DAIFMT_CBM_CFM:
158 		snd_soc_component_update_bits(component, CS35L32_ADSP_CTL,
159 				    CS35L32_ADSP_MASTER_MASK,
160 				CS35L32_ADSP_MASTER_MASK);
161 		break;
162 	case SND_SOC_DAIFMT_CBS_CFS:
163 		snd_soc_component_update_bits(component, CS35L32_ADSP_CTL,
164 				    CS35L32_ADSP_MASTER_MASK, 0);
165 		break;
166 	default:
167 		return -EINVAL;
168 	}
169 
170 	return 0;
171 }
172 
cs35l32_set_tristate(struct snd_soc_dai * dai,int tristate)173 static int cs35l32_set_tristate(struct snd_soc_dai *dai, int tristate)
174 {
175 	struct snd_soc_component *component = dai->component;
176 
177 	return snd_soc_component_update_bits(component, CS35L32_PWRCTL2,
178 					CS35L32_SDOUT_3ST, tristate << 3);
179 }
180 
181 static const struct snd_soc_dai_ops cs35l32_ops = {
182 	.set_fmt = cs35l32_set_dai_fmt,
183 	.set_tristate = cs35l32_set_tristate,
184 };
185 
186 static struct snd_soc_dai_driver cs35l32_dai[] = {
187 	{
188 		.name = "cs35l32-monitor",
189 		.id = 0,
190 		.capture = {
191 			.stream_name = "Capture",
192 			.channels_min = 2,
193 			.channels_max = 2,
194 			.rates = CS35L32_RATES,
195 			.formats = CS35L32_FORMATS,
196 		},
197 		.ops = &cs35l32_ops,
198 		.symmetric_rate = 1,
199 	}
200 };
201 
cs35l32_component_set_sysclk(struct snd_soc_component * component,int clk_id,int source,unsigned int freq,int dir)202 static int cs35l32_component_set_sysclk(struct snd_soc_component *component,
203 			      int clk_id, int source, unsigned int freq, int dir)
204 {
205 	unsigned int val;
206 
207 	switch (freq) {
208 	case 6000000:
209 		val = CS35L32_MCLK_RATIO;
210 		break;
211 	case 12000000:
212 		val = CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO;
213 		break;
214 	case 6144000:
215 		val = 0;
216 		break;
217 	case 12288000:
218 		val = CS35L32_MCLK_DIV2_MASK;
219 		break;
220 	default:
221 		return -EINVAL;
222 	}
223 
224 	return snd_soc_component_update_bits(component, CS35L32_CLK_CTL,
225 			CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO_MASK, val);
226 }
227 
228 static const struct snd_soc_component_driver soc_component_dev_cs35l32 = {
229 	.set_sysclk		= cs35l32_component_set_sysclk,
230 	.controls		= cs35l32_snd_controls,
231 	.num_controls		= ARRAY_SIZE(cs35l32_snd_controls),
232 	.dapm_widgets		= cs35l32_dapm_widgets,
233 	.num_dapm_widgets	= ARRAY_SIZE(cs35l32_dapm_widgets),
234 	.dapm_routes		= cs35l32_audio_map,
235 	.num_dapm_routes	= ARRAY_SIZE(cs35l32_audio_map),
236 	.idle_bias_on		= 1,
237 	.use_pmdown_time	= 1,
238 	.endianness		= 1,
239 };
240 
241 /* Current and threshold powerup sequence Pg37 in datasheet */
242 static const struct reg_sequence cs35l32_monitor_patch[] = {
243 
244 	{ 0x00, 0x99 },
245 	{ 0x48, 0x17 },
246 	{ 0x49, 0x56 },
247 	{ 0x43, 0x01 },
248 	{ 0x3B, 0x62 },
249 	{ 0x3C, 0x80 },
250 	{ 0x00, 0x00 },
251 };
252 
253 static const struct regmap_config cs35l32_regmap = {
254 	.reg_bits = 8,
255 	.val_bits = 8,
256 
257 	.max_register = CS35L32_MAX_REGISTER,
258 	.reg_defaults = cs35l32_reg_defaults,
259 	.num_reg_defaults = ARRAY_SIZE(cs35l32_reg_defaults),
260 	.volatile_reg = cs35l32_volatile_register,
261 	.readable_reg = cs35l32_readable_register,
262 	.precious_reg = cs35l32_precious_register,
263 	.cache_type = REGCACHE_MAPLE,
264 
265 	.use_single_read = true,
266 	.use_single_write = true,
267 };
268 
cs35l32_handle_of_data(struct i2c_client * i2c_client,struct cs35l32_platform_data * pdata)269 static int cs35l32_handle_of_data(struct i2c_client *i2c_client,
270 				    struct cs35l32_platform_data *pdata)
271 {
272 	struct device_node *np = i2c_client->dev.of_node;
273 	unsigned int val;
274 
275 	if (of_property_read_u32(np, "cirrus,sdout-share", &val) >= 0)
276 		pdata->sdout_share = val;
277 
278 	if (of_property_read_u32(np, "cirrus,boost-manager", &val))
279 		val = -1u;
280 
281 	switch (val) {
282 	case CS35L32_BOOST_MGR_AUTO:
283 	case CS35L32_BOOST_MGR_AUTO_AUDIO:
284 	case CS35L32_BOOST_MGR_BYPASS:
285 	case CS35L32_BOOST_MGR_FIXED:
286 		pdata->boost_mng = val;
287 		break;
288 	case -1u:
289 	default:
290 		dev_err(&i2c_client->dev,
291 			"Wrong cirrus,boost-manager DT value %d\n", val);
292 		pdata->boost_mng = CS35L32_BOOST_MGR_BYPASS;
293 	}
294 
295 	if (of_property_read_u32(np, "cirrus,sdout-datacfg", &val))
296 		val = -1u;
297 	switch (val) {
298 	case CS35L32_DATA_CFG_LR_VP:
299 	case CS35L32_DATA_CFG_LR_STAT:
300 	case CS35L32_DATA_CFG_LR:
301 	case CS35L32_DATA_CFG_LR_VPSTAT:
302 		pdata->sdout_datacfg = val;
303 		break;
304 	case -1u:
305 	default:
306 		dev_err(&i2c_client->dev,
307 			"Wrong cirrus,sdout-datacfg DT value %d\n", val);
308 		pdata->sdout_datacfg = CS35L32_DATA_CFG_LR;
309 	}
310 
311 	if (of_property_read_u32(np, "cirrus,battery-threshold", &val))
312 		val = -1u;
313 	switch (val) {
314 	case CS35L32_BATT_THRESH_3_1V:
315 	case CS35L32_BATT_THRESH_3_2V:
316 	case CS35L32_BATT_THRESH_3_3V:
317 	case CS35L32_BATT_THRESH_3_4V:
318 		pdata->batt_thresh = val;
319 		break;
320 	case -1u:
321 	default:
322 		dev_err(&i2c_client->dev,
323 			"Wrong cirrus,battery-threshold DT value %d\n", val);
324 		pdata->batt_thresh = CS35L32_BATT_THRESH_3_3V;
325 	}
326 
327 	if (of_property_read_u32(np, "cirrus,battery-recovery", &val))
328 		val = -1u;
329 	switch (val) {
330 	case CS35L32_BATT_RECOV_3_1V:
331 	case CS35L32_BATT_RECOV_3_2V:
332 	case CS35L32_BATT_RECOV_3_3V:
333 	case CS35L32_BATT_RECOV_3_4V:
334 	case CS35L32_BATT_RECOV_3_5V:
335 	case CS35L32_BATT_RECOV_3_6V:
336 		pdata->batt_recov = val;
337 		break;
338 	case -1u:
339 	default:
340 		dev_err(&i2c_client->dev,
341 			"Wrong cirrus,battery-recovery DT value %d\n", val);
342 		pdata->batt_recov = CS35L32_BATT_RECOV_3_4V;
343 	}
344 
345 	return 0;
346 }
347 
cs35l32_i2c_probe(struct i2c_client * i2c_client)348 static int cs35l32_i2c_probe(struct i2c_client *i2c_client)
349 {
350 	struct cs35l32_private *cs35l32;
351 	struct cs35l32_platform_data *pdata =
352 		dev_get_platdata(&i2c_client->dev);
353 	int ret, i, devid;
354 	unsigned int reg;
355 
356 	cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(*cs35l32), GFP_KERNEL);
357 	if (!cs35l32)
358 		return -ENOMEM;
359 
360 	i2c_set_clientdata(i2c_client, cs35l32);
361 
362 	cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap);
363 	if (IS_ERR(cs35l32->regmap)) {
364 		ret = PTR_ERR(cs35l32->regmap);
365 		dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
366 		return ret;
367 	}
368 
369 	if (pdata) {
370 		cs35l32->pdata = *pdata;
371 	} else {
372 		pdata = devm_kzalloc(&i2c_client->dev, sizeof(*pdata),
373 				     GFP_KERNEL);
374 		if (!pdata)
375 			return -ENOMEM;
376 
377 		if (i2c_client->dev.of_node) {
378 			ret = cs35l32_handle_of_data(i2c_client,
379 						     &cs35l32->pdata);
380 			if (ret != 0)
381 				return ret;
382 		}
383 	}
384 
385 	for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++)
386 		cs35l32->supplies[i].supply = cs35l32_supply_names[i];
387 
388 	ret = devm_regulator_bulk_get(&i2c_client->dev,
389 				      ARRAY_SIZE(cs35l32->supplies),
390 				      cs35l32->supplies);
391 	if (ret != 0) {
392 		dev_err(&i2c_client->dev,
393 			"Failed to request supplies: %d\n", ret);
394 		return ret;
395 	}
396 
397 	ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
398 				    cs35l32->supplies);
399 	if (ret != 0) {
400 		dev_err(&i2c_client->dev,
401 			"Failed to enable supplies: %d\n", ret);
402 		return ret;
403 	}
404 
405 	/* Reset the Device */
406 	cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
407 		"reset", GPIOD_OUT_LOW);
408 	if (IS_ERR(cs35l32->reset_gpio)) {
409 		ret = PTR_ERR(cs35l32->reset_gpio);
410 		goto err_supplies;
411 	}
412 
413 	gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
414 
415 	/* initialize codec */
416 	devid = cirrus_read_device_id(cs35l32->regmap, CS35L32_DEVID_AB);
417 	if (devid < 0) {
418 		ret = devid;
419 		dev_err(&i2c_client->dev, "Failed to read device ID: %d\n", ret);
420 		goto err_disable;
421 	}
422 
423 	if (devid != CS35L32_CHIP_ID) {
424 		ret = -ENODEV;
425 		dev_err(&i2c_client->dev,
426 			"CS35L32 Device ID (%X). Expected %X\n",
427 			devid, CS35L32_CHIP_ID);
428 		goto err_disable;
429 	}
430 
431 	ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, &reg);
432 	if (ret < 0) {
433 		dev_err(&i2c_client->dev, "Get Revision ID failed\n");
434 		goto err_disable;
435 	}
436 
437 	ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch,
438 				    ARRAY_SIZE(cs35l32_monitor_patch));
439 	if (ret < 0) {
440 		dev_err(&i2c_client->dev, "Failed to apply errata patch\n");
441 		goto err_disable;
442 	}
443 
444 	dev_info(&i2c_client->dev,
445 		 "Cirrus Logic CS35L32, Revision: %02X\n", reg & 0xFF);
446 
447 	/* Setup VBOOST Management */
448 	if (cs35l32->pdata.boost_mng)
449 		regmap_update_bits(cs35l32->regmap, CS35L32_AUDIO_LED_MNGR,
450 				   CS35L32_BOOST_MASK,
451 				cs35l32->pdata.boost_mng);
452 
453 	/* Setup ADSP Format Config */
454 	if (cs35l32->pdata.sdout_share)
455 		regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
456 				    CS35L32_ADSP_SHARE_MASK,
457 				cs35l32->pdata.sdout_share << 3);
458 
459 	/* Setup ADSP Data Configuration */
460 	if (cs35l32->pdata.sdout_datacfg)
461 		regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
462 				   CS35L32_ADSP_DATACFG_MASK,
463 				cs35l32->pdata.sdout_datacfg << 4);
464 
465 	/* Setup Low Battery Recovery  */
466 	if (cs35l32->pdata.batt_recov)
467 		regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
468 				   CS35L32_BATT_REC_MASK,
469 				cs35l32->pdata.batt_recov << 1);
470 
471 	/* Setup Low Battery Threshold */
472 	if (cs35l32->pdata.batt_thresh)
473 		regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
474 				   CS35L32_BATT_THRESH_MASK,
475 				cs35l32->pdata.batt_thresh << 4);
476 
477 	/* Power down the AMP */
478 	regmap_update_bits(cs35l32->regmap, CS35L32_PWRCTL1, CS35L32_PDN_AMP,
479 			    CS35L32_PDN_AMP);
480 
481 	/* Clear MCLK Error Bit since we don't have the clock yet */
482 	regmap_read(cs35l32->regmap, CS35L32_INT_STATUS_1, &reg);
483 
484 	ret = devm_snd_soc_register_component(&i2c_client->dev,
485 			&soc_component_dev_cs35l32, cs35l32_dai,
486 			ARRAY_SIZE(cs35l32_dai));
487 	if (ret < 0)
488 		goto err_disable;
489 
490 	return 0;
491 
492 err_disable:
493 	gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
494 err_supplies:
495 	regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
496 			       cs35l32->supplies);
497 	return ret;
498 }
499 
cs35l32_i2c_remove(struct i2c_client * i2c_client)500 static void cs35l32_i2c_remove(struct i2c_client *i2c_client)
501 {
502 	struct cs35l32_private *cs35l32 = i2c_get_clientdata(i2c_client);
503 
504 	/* Hold down reset */
505 	gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
506 }
507 
508 #ifdef CONFIG_PM
cs35l32_runtime_suspend(struct device * dev)509 static int cs35l32_runtime_suspend(struct device *dev)
510 {
511 	struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
512 
513 	regcache_cache_only(cs35l32->regmap, true);
514 	regcache_mark_dirty(cs35l32->regmap);
515 
516 	/* Hold down reset */
517 	gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
518 
519 	/* remove power */
520 	regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
521 			       cs35l32->supplies);
522 
523 	return 0;
524 }
525 
cs35l32_runtime_resume(struct device * dev)526 static int cs35l32_runtime_resume(struct device *dev)
527 {
528 	struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
529 	int ret;
530 
531 	/* Enable power */
532 	ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
533 				    cs35l32->supplies);
534 	if (ret != 0) {
535 		dev_err(dev, "Failed to enable supplies: %d\n",
536 			ret);
537 		return ret;
538 	}
539 
540 	gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
541 
542 	regcache_cache_only(cs35l32->regmap, false);
543 	regcache_sync(cs35l32->regmap);
544 
545 	return 0;
546 }
547 #endif
548 
549 static const struct dev_pm_ops cs35l32_runtime_pm = {
550 	SET_RUNTIME_PM_OPS(cs35l32_runtime_suspend, cs35l32_runtime_resume,
551 			   NULL)
552 };
553 
554 static const struct of_device_id cs35l32_of_match[] = {
555 	{ .compatible = "cirrus,cs35l32", },
556 	{},
557 };
558 MODULE_DEVICE_TABLE(of, cs35l32_of_match);
559 
560 
561 static const struct i2c_device_id cs35l32_id[] = {
562 	{"cs35l32", 0},
563 	{}
564 };
565 
566 MODULE_DEVICE_TABLE(i2c, cs35l32_id);
567 
568 static struct i2c_driver cs35l32_i2c_driver = {
569 	.driver = {
570 		   .name = "cs35l32",
571 		   .pm = &cs35l32_runtime_pm,
572 		   .of_match_table = cs35l32_of_match,
573 		   },
574 	.id_table = cs35l32_id,
575 	.probe = cs35l32_i2c_probe,
576 	.remove = cs35l32_i2c_remove,
577 };
578 
579 module_i2c_driver(cs35l32_i2c_driver);
580 
581 MODULE_DESCRIPTION("ASoC CS35L32 driver");
582 MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>");
583 MODULE_LICENSE("GPL");
584