blob: 44c30fe3e3151dc6621c308da5c1f4759a6d3f65 [file] [log] [blame]
Brian Austineef5bb22014-08-04 15:11:16 -05001/*
2 * cs35l32.c -- CS35L32 ALSA SoC audio driver
3 *
4 * Copyright 2014 CirrusLogic, Inc.
5 *
6 * Author: Brian Austin <brian.austin@cirrus.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/moduleparam.h>
Brian Austineef5bb22014-08-04 15:11:16 -050016#include <linux/kernel.h>
17#include <linux/init.h>
18#include <linux/delay.h>
19#include <linux/i2c.h>
20#include <linux/gpio.h>
21#include <linux/regmap.h>
22#include <linux/slab.h>
23#include <linux/platform_device.h>
24#include <linux/regulator/consumer.h>
25#include <linux/gpio/consumer.h>
26#include <linux/of_device.h>
Brian Austineef5bb22014-08-04 15:11:16 -050027#include <sound/core.h>
28#include <sound/pcm.h>
29#include <sound/pcm_params.h>
30#include <sound/soc.h>
31#include <sound/soc-dapm.h>
32#include <sound/initval.h>
33#include <sound/tlv.h>
34#include <dt-bindings/sound/cs35l32.h>
35
36#include "cs35l32.h"
37
38#define CS35L32_NUM_SUPPLIES 2
39static const char *const cs35l32_supply_names[CS35L32_NUM_SUPPLIES] = {
40 "VA",
41 "VP",
42};
43
44struct cs35l32_private {
45 struct regmap *regmap;
46 struct snd_soc_codec *codec;
47 struct regulator_bulk_data supplies[CS35L32_NUM_SUPPLIES];
48 struct cs35l32_platform_data pdata;
49 struct gpio_desc *reset_gpio;
50};
51
52static const struct reg_default cs35l32_reg_defaults[] = {
53
54 { 0x06, 0x04 }, /* Power Ctl 1 */
55 { 0x07, 0xE8 }, /* Power Ctl 2 */
56 { 0x08, 0x40 }, /* Clock Ctl */
57 { 0x09, 0x20 }, /* Low Battery Threshold */
58 { 0x0A, 0x00 }, /* Voltage Monitor [RO] */
59 { 0x0B, 0x40 }, /* Conv Peak Curr Protection CTL */
60 { 0x0C, 0x07 }, /* IMON Scaling */
61 { 0x0D, 0x03 }, /* Audio/LED Pwr Manager */
62 { 0x0F, 0x20 }, /* Serial Port Control */
63 { 0x10, 0x14 }, /* Class D Amp CTL */
64 { 0x11, 0x00 }, /* Protection Release CTL */
65 { 0x12, 0xFF }, /* Interrupt Mask 1 */
66 { 0x13, 0xFF }, /* Interrupt Mask 2 */
67 { 0x14, 0xFF }, /* Interrupt Mask 3 */
68 { 0x19, 0x00 }, /* LED Flash Mode Current */
69 { 0x1A, 0x00 }, /* LED Movie Mode Current */
70 { 0x1B, 0x20 }, /* LED Flash Timer */
71 { 0x1C, 0x00 }, /* LED Flash Inhibit Current */
72};
73
74static bool cs35l32_readable_register(struct device *dev, unsigned int reg)
75{
76 switch (reg) {
Axel Linc1763302015-08-12 11:07:46 +080077 case CS35L32_DEVID_AB ... CS35L32_AUDIO_LED_MNGR:
78 case CS35L32_ADSP_CTL ... CS35L32_FLASH_INHIBIT:
Brian Austineef5bb22014-08-04 15:11:16 -050079 return true;
80 default:
81 return false;
82 }
83}
84
85static bool cs35l32_volatile_register(struct device *dev, unsigned int reg)
86{
87 switch (reg) {
Axel Linc1763302015-08-12 11:07:46 +080088 case CS35L32_DEVID_AB ... CS35L32_REV_ID:
89 case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
Brian Austin7eef0852014-08-28 10:02:40 -050090 return true;
Brian Austineef5bb22014-08-04 15:11:16 -050091 default:
Brian Austin7eef0852014-08-28 10:02:40 -050092 return false;
Brian Austineef5bb22014-08-04 15:11:16 -050093 }
94}
95
96static bool cs35l32_precious_register(struct device *dev, unsigned int reg)
97{
98 switch (reg) {
Axel Linc1763302015-08-12 11:07:46 +080099 case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
Brian Austin7eef0852014-08-28 10:02:40 -0500100 return true;
Brian Austineef5bb22014-08-04 15:11:16 -0500101 default:
Brian Austin7eef0852014-08-28 10:02:40 -0500102 return false;
Brian Austineef5bb22014-08-04 15:11:16 -0500103 }
104}
105
106static DECLARE_TLV_DB_SCALE(classd_ctl_tlv, 900, 300, 0);
107
108static const struct snd_kcontrol_new imon_ctl =
109 SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 6, 1, 1);
110
111static const struct snd_kcontrol_new vmon_ctl =
112 SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 7, 1, 1);
113
114static const struct snd_kcontrol_new vpmon_ctl =
115 SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 5, 1, 1);
116
117static const struct snd_kcontrol_new cs35l32_snd_controls[] = {
118 SOC_SINGLE_TLV("Speaker Volume", CS35L32_CLASSD_CTL,
119 3, 0x04, 1, classd_ctl_tlv),
120 SOC_SINGLE("Zero Cross Switch", CS35L32_CLASSD_CTL, 2, 1, 0),
121 SOC_SINGLE("Gain Manager Switch", CS35L32_AUDIO_LED_MNGR, 3, 1, 0),
122};
123
124static const struct snd_soc_dapm_widget cs35l32_dapm_widgets[] = {
125
126 SND_SOC_DAPM_SUPPLY("BOOST", CS35L32_PWRCTL1, 2, 1, NULL, 0),
127 SND_SOC_DAPM_OUT_DRV("Speaker", CS35L32_PWRCTL1, 7, 1, NULL, 0),
128
129 SND_SOC_DAPM_AIF_OUT("SDOUT", NULL, 0, CS35L32_PWRCTL2, 3, 1),
130
131 SND_SOC_DAPM_INPUT("VP"),
132 SND_SOC_DAPM_INPUT("ISENSE"),
133 SND_SOC_DAPM_INPUT("VSENSE"),
134
135 SND_SOC_DAPM_SWITCH("VMON ADC", CS35L32_PWRCTL2, 7, 1, &vmon_ctl),
136 SND_SOC_DAPM_SWITCH("IMON ADC", CS35L32_PWRCTL2, 6, 1, &imon_ctl),
137 SND_SOC_DAPM_SWITCH("VPMON ADC", CS35L32_PWRCTL2, 5, 1, &vpmon_ctl),
138};
139
140static const struct snd_soc_dapm_route cs35l32_audio_map[] = {
141
142 {"Speaker", NULL, "BOOST"},
143
144 {"VMON ADC", NULL, "VSENSE"},
145 {"IMON ADC", NULL, "ISENSE"},
146 {"VPMON ADC", NULL, "VP"},
147
148 {"SDOUT", "Switch", "VMON ADC"},
149 {"SDOUT", "Switch", "IMON ADC"},
150 {"SDOUT", "Switch", "VPMON ADC"},
151
152 {"Capture", NULL, "SDOUT"},
153};
154
155static int cs35l32_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
156{
157 struct snd_soc_codec *codec = codec_dai->codec;
158
159 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
160 case SND_SOC_DAIFMT_CBM_CFM:
161 snd_soc_update_bits(codec, CS35L32_ADSP_CTL,
162 CS35L32_ADSP_MASTER_MASK,
163 CS35L32_ADSP_MASTER_MASK);
164 break;
165 case SND_SOC_DAIFMT_CBS_CFS:
166 snd_soc_update_bits(codec, CS35L32_ADSP_CTL,
167 CS35L32_ADSP_MASTER_MASK, 0);
168 break;
169 default:
170 return -EINVAL;
171 }
172
173 return 0;
174}
175
176static int cs35l32_set_tristate(struct snd_soc_dai *dai, int tristate)
177{
178 struct snd_soc_codec *codec = dai->codec;
179
180 return snd_soc_update_bits(codec, CS35L32_PWRCTL2,
181 CS35L32_SDOUT_3ST, tristate << 3);
182}
183
184static const struct snd_soc_dai_ops cs35l32_ops = {
185 .set_fmt = cs35l32_set_dai_fmt,
186 .set_tristate = cs35l32_set_tristate,
187};
188
189static struct snd_soc_dai_driver cs35l32_dai[] = {
190 {
191 .name = "cs35l32-monitor",
192 .id = 0,
193 .capture = {
194 .stream_name = "Capture",
195 .channels_min = 2,
196 .channels_max = 2,
197 .rates = CS35L32_RATES,
198 .formats = CS35L32_FORMATS,
199 },
200 .ops = &cs35l32_ops,
201 .symmetric_rates = 1,
202 }
203};
204
205static int cs35l32_codec_set_sysclk(struct snd_soc_codec *codec,
206 int clk_id, int source, unsigned int freq, int dir)
207{
Axel Lin5f609f22014-08-28 16:27:56 +0800208 unsigned int val;
Brian Austineef5bb22014-08-04 15:11:16 -0500209
210 switch (freq) {
211 case 6000000:
Axel Lin5f609f22014-08-28 16:27:56 +0800212 val = CS35L32_MCLK_RATIO;
Brian Austineef5bb22014-08-04 15:11:16 -0500213 break;
214 case 12000000:
Axel Lin5f609f22014-08-28 16:27:56 +0800215 val = CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO;
Brian Austineef5bb22014-08-04 15:11:16 -0500216 break;
217 case 6144000:
Axel Lin5f609f22014-08-28 16:27:56 +0800218 val = 0;
Brian Austineef5bb22014-08-04 15:11:16 -0500219 break;
220 case 12288000:
Axel Lin5f609f22014-08-28 16:27:56 +0800221 val = CS35L32_MCLK_DIV2_MASK;
Brian Austineef5bb22014-08-04 15:11:16 -0500222 break;
223 default:
224 return -EINVAL;
225 }
226
Axel Lin5f609f22014-08-28 16:27:56 +0800227 return snd_soc_update_bits(codec, CS35L32_CLK_CTL,
228 CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO_MASK, val);
Brian Austineef5bb22014-08-04 15:11:16 -0500229}
230
Krzysztof Kozlowskid8836412015-01-05 10:18:22 +0100231static const struct snd_soc_codec_driver soc_codec_dev_cs35l32 = {
Brian Austineef5bb22014-08-04 15:11:16 -0500232 .set_sysclk = cs35l32_codec_set_sysclk,
233
234 .dapm_widgets = cs35l32_dapm_widgets,
235 .num_dapm_widgets = ARRAY_SIZE(cs35l32_dapm_widgets),
236 .dapm_routes = cs35l32_audio_map,
237 .num_dapm_routes = ARRAY_SIZE(cs35l32_audio_map),
238
239 .controls = cs35l32_snd_controls,
240 .num_controls = ARRAY_SIZE(cs35l32_snd_controls),
241};
242
243/* Current and threshold powerup sequence Pg37 in datasheet */
Nariman Poushin8019ff62015-07-16 16:36:21 +0100244static const struct reg_sequence cs35l32_monitor_patch[] = {
Brian Austineef5bb22014-08-04 15:11:16 -0500245
246 { 0x00, 0x99 },
247 { 0x48, 0x17 },
248 { 0x49, 0x56 },
249 { 0x43, 0x01 },
250 { 0x3B, 0x62 },
251 { 0x3C, 0x80 },
252 { 0x00, 0x00 },
253};
254
Krzysztof Kozlowskid8836412015-01-05 10:18:22 +0100255static const struct regmap_config cs35l32_regmap = {
Brian Austineef5bb22014-08-04 15:11:16 -0500256 .reg_bits = 8,
257 .val_bits = 8,
258
259 .max_register = CS35L32_MAX_REGISTER,
260 .reg_defaults = cs35l32_reg_defaults,
261 .num_reg_defaults = ARRAY_SIZE(cs35l32_reg_defaults),
262 .volatile_reg = cs35l32_volatile_register,
263 .readable_reg = cs35l32_readable_register,
264 .precious_reg = cs35l32_precious_register,
265 .cache_type = REGCACHE_RBTREE,
266};
267
268static int cs35l32_handle_of_data(struct i2c_client *i2c_client,
269 struct cs35l32_platform_data *pdata)
270{
271 struct device_node *np = i2c_client->dev.of_node;
272 unsigned int val;
273
274 if (of_property_read_u32(np, "cirrus,sdout-share", &val) >= 0)
275 pdata->sdout_share = val;
276
277 of_property_read_u32(np, "cirrus,boost-manager", &val);
278 switch (val) {
279 case CS35L32_BOOST_MGR_AUTO:
280 case CS35L32_BOOST_MGR_AUTO_AUDIO:
281 case CS35L32_BOOST_MGR_BYPASS:
282 case CS35L32_BOOST_MGR_FIXED:
283 pdata->boost_mng = val;
284 break;
285 default:
286 dev_err(&i2c_client->dev,
287 "Wrong cirrus,boost-manager DT value %d\n", val);
288 pdata->boost_mng = CS35L32_BOOST_MGR_BYPASS;
289 }
290
291 of_property_read_u32(np, "cirrus,sdout-datacfg", &val);
292 switch (val) {
293 case CS35L32_DATA_CFG_LR_VP:
294 case CS35L32_DATA_CFG_LR_STAT:
295 case CS35L32_DATA_CFG_LR:
296 case CS35L32_DATA_CFG_LR_VPSTAT:
297 pdata->sdout_datacfg = val;
298 break;
299 default:
300 dev_err(&i2c_client->dev,
301 "Wrong cirrus,sdout-datacfg DT value %d\n", val);
302 pdata->sdout_datacfg = CS35L32_DATA_CFG_LR;
303 }
304
305 of_property_read_u32(np, "cirrus,battery-threshold", &val);
306 switch (val) {
307 case CS35L32_BATT_THRESH_3_1V:
308 case CS35L32_BATT_THRESH_3_2V:
309 case CS35L32_BATT_THRESH_3_3V:
310 case CS35L32_BATT_THRESH_3_4V:
311 pdata->batt_thresh = val;
312 break;
313 default:
314 dev_err(&i2c_client->dev,
315 "Wrong cirrus,battery-threshold DT value %d\n", val);
316 pdata->batt_thresh = CS35L32_BATT_THRESH_3_3V;
317 }
318
319 of_property_read_u32(np, "cirrus,battery-recovery", &val);
320 switch (val) {
321 case CS35L32_BATT_RECOV_3_1V:
322 case CS35L32_BATT_RECOV_3_2V:
323 case CS35L32_BATT_RECOV_3_3V:
324 case CS35L32_BATT_RECOV_3_4V:
325 case CS35L32_BATT_RECOV_3_5V:
326 case CS35L32_BATT_RECOV_3_6V:
327 pdata->batt_recov = val;
328 break;
329 default:
330 dev_err(&i2c_client->dev,
331 "Wrong cirrus,battery-recovery DT value %d\n", val);
332 pdata->batt_recov = CS35L32_BATT_RECOV_3_4V;
333 }
334
335 return 0;
336}
337
338static int cs35l32_i2c_probe(struct i2c_client *i2c_client,
339 const struct i2c_device_id *id)
340{
341 struct cs35l32_private *cs35l32;
342 struct cs35l32_platform_data *pdata =
343 dev_get_platdata(&i2c_client->dev);
344 int ret, i;
345 unsigned int devid = 0;
346 unsigned int reg;
347
348
349 cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs35l32_private),
350 GFP_KERNEL);
351 if (!cs35l32) {
352 dev_err(&i2c_client->dev, "could not allocate codec\n");
353 return -ENOMEM;
354 }
355
356 i2c_set_clientdata(i2c_client, cs35l32);
357
358 cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap);
359 if (IS_ERR(cs35l32->regmap)) {
360 ret = PTR_ERR(cs35l32->regmap);
361 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
362 return ret;
363 }
364
365 if (pdata) {
366 cs35l32->pdata = *pdata;
367 } else {
368 pdata = devm_kzalloc(&i2c_client->dev,
369 sizeof(struct cs35l32_platform_data),
370 GFP_KERNEL);
371 if (!pdata) {
372 dev_err(&i2c_client->dev, "could not allocate pdata\n");
373 return -ENOMEM;
374 }
375 if (i2c_client->dev.of_node) {
376 ret = cs35l32_handle_of_data(i2c_client,
377 &cs35l32->pdata);
378 if (ret != 0)
379 return ret;
380 }
381 }
382
383 for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++)
384 cs35l32->supplies[i].supply = cs35l32_supply_names[i];
385
386 ret = devm_regulator_bulk_get(&i2c_client->dev,
387 ARRAY_SIZE(cs35l32->supplies),
388 cs35l32->supplies);
389 if (ret != 0) {
390 dev_err(&i2c_client->dev,
391 "Failed to request supplies: %d\n", ret);
392 return ret;
393 }
394
395 ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
396 cs35l32->supplies);
397 if (ret != 0) {
398 dev_err(&i2c_client->dev,
399 "Failed to enable supplies: %d\n", ret);
400 return ret;
401 }
402
403 /* Reset the Device */
Uwe Kleine-König34d7c392015-02-21 16:33:24 +0100404 cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
405 "reset", GPIOD_OUT_LOW);
406 if (IS_ERR(cs35l32->reset_gpio))
407 return PTR_ERR(cs35l32->reset_gpio);
Brian Austineef5bb22014-08-04 15:11:16 -0500408
Axel Lind5a78c82015-07-23 08:29:57 +0800409 gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
Brian Austineef5bb22014-08-04 15:11:16 -0500410
411 /* initialize codec */
412 ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_AB, &reg);
413 devid = (reg & 0xFF) << 12;
414
415 ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_CD, &reg);
416 devid |= (reg & 0xFF) << 4;
417
418 ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_E, &reg);
419 devid |= (reg & 0xF0) >> 4;
420
421 if (devid != CS35L32_CHIP_ID) {
422 ret = -ENODEV;
423 dev_err(&i2c_client->dev,
424 "CS35L32 Device ID (%X). Expected %X\n",
425 devid, CS35L32_CHIP_ID);
426 return ret;
427 }
428
429 ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, &reg);
430 if (ret < 0) {
431 dev_err(&i2c_client->dev, "Get Revision ID failed\n");
432 return ret;
433 }
434
435 ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch,
436 ARRAY_SIZE(cs35l32_monitor_patch));
437 if (ret < 0) {
438 dev_err(&i2c_client->dev, "Failed to apply errata patch\n");
439 return ret;
440 }
441
442 dev_info(&i2c_client->dev,
443 "Cirrus Logic CS35L32, Revision: %02X\n", reg & 0xFF);
444
445 /* Setup VBOOST Management */
446 if (cs35l32->pdata.boost_mng)
447 regmap_update_bits(cs35l32->regmap, CS35L32_AUDIO_LED_MNGR,
448 CS35L32_BOOST_MASK,
449 cs35l32->pdata.boost_mng);
450
451 /* Setup ADSP Format Config */
452 if (cs35l32->pdata.sdout_share)
453 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
454 CS35L32_ADSP_SHARE_MASK,
455 cs35l32->pdata.sdout_share << 3);
456
457 /* Setup ADSP Data Configuration */
458 if (cs35l32->pdata.sdout_datacfg)
459 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
460 CS35L32_ADSP_DATACFG_MASK,
461 cs35l32->pdata.sdout_datacfg << 4);
462
463 /* Setup Low Battery Recovery */
464 if (cs35l32->pdata.batt_recov)
465 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
466 CS35L32_BATT_REC_MASK,
467 cs35l32->pdata.batt_recov << 1);
468
469 /* Setup Low Battery Threshold */
470 if (cs35l32->pdata.batt_thresh)
471 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
472 CS35L32_BATT_THRESH_MASK,
473 cs35l32->pdata.batt_thresh << 4);
474
475 /* Power down the AMP */
476 regmap_update_bits(cs35l32->regmap, CS35L32_PWRCTL1, CS35L32_PDN_AMP,
477 CS35L32_PDN_AMP);
478
479 /* Clear MCLK Error Bit since we don't have the clock yet */
480 ret = regmap_read(cs35l32->regmap, CS35L32_INT_STATUS_1, &reg);
481
482 ret = snd_soc_register_codec(&i2c_client->dev,
483 &soc_codec_dev_cs35l32, cs35l32_dai,
484 ARRAY_SIZE(cs35l32_dai));
485 if (ret < 0)
486 goto err_disable;
487
488 return 0;
489
490err_disable:
491 regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
492 cs35l32->supplies);
Brian Austin38f57532014-08-07 09:34:38 -0500493 return ret;
Brian Austineef5bb22014-08-04 15:11:16 -0500494}
495
496static int cs35l32_i2c_remove(struct i2c_client *i2c_client)
497{
498 struct cs35l32_private *cs35l32 = i2c_get_clientdata(i2c_client);
499
500 snd_soc_unregister_codec(&i2c_client->dev);
501
502 /* Hold down reset */
Axel Lind5a78c82015-07-23 08:29:57 +0800503 gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
Brian Austineef5bb22014-08-04 15:11:16 -0500504
Brian Austineef5bb22014-08-04 15:11:16 -0500505 return 0;
506}
507
Rafael J. Wysocki641d3342014-12-13 00:42:18 +0100508#ifdef CONFIG_PM
Brian Austineef5bb22014-08-04 15:11:16 -0500509static 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 */
Axel Lind5a78c82015-07-23 08:29:57 +0800517 gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
Brian Austineef5bb22014-08-04 15:11:16 -0500518
519 /* remove power */
520 regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
521 cs35l32->supplies);
522
523 return 0;
524}
525
526static 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
Axel Lind5a78c82015-07-23 08:29:57 +0800540 gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
Brian Austineef5bb22014-08-04 15:11:16 -0500541
542 regcache_cache_only(cs35l32->regmap, false);
543 regcache_sync(cs35l32->regmap);
544
545 return 0;
546}
547#endif
548
549static const struct dev_pm_ops cs35l32_runtime_pm = {
550 SET_RUNTIME_PM_OPS(cs35l32_runtime_suspend, cs35l32_runtime_resume,
551 NULL)
552};
553
554static const struct of_device_id cs35l32_of_match[] = {
555 { .compatible = "cirrus,cs35l32", },
556 {},
557};
558MODULE_DEVICE_TABLE(of, cs35l32_of_match);
559
560
561static const struct i2c_device_id cs35l32_id[] = {
562 {"cs35l32", 0},
563 {}
564};
565
566MODULE_DEVICE_TABLE(i2c, cs35l32_id);
567
568static struct i2c_driver cs35l32_i2c_driver = {
569 .driver = {
570 .name = "cs35l32",
Brian Austineef5bb22014-08-04 15:11:16 -0500571 .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
579module_i2c_driver(cs35l32_i2c_driver);
580
581MODULE_DESCRIPTION("ASoC CS35L32 driver");
582MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>");
583MODULE_LICENSE("GPL");