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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
36static const char *const cs35l32_supply_names[CS35L32_NUM_SUPPLIES] = {
37 "VA",
38 "VP",
39};
40
41struct 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
49static const struct reg_default cs35l32_reg_defaults[] = {
50
51 { 0x06, 0x04 },
52 { 0x07, 0xE8 },
53 { 0x08, 0x40 },
54 { 0x09, 0x20 },
55 { 0x0A, 0x00 },
56 { 0x0B, 0x40 },
57 { 0x0C, 0x07 },
58 { 0x0D, 0x03 },
59 { 0x0F, 0x20 },
60 { 0x10, 0x14 },
61 { 0x11, 0x00 },
62 { 0x12, 0xFF },
63 { 0x13, 0xFF },
64 { 0x14, 0xFF },
65 { 0x19, 0x00 },
66 { 0x1A, 0x00 },
67 { 0x1B, 0x20 },
68 { 0x1C, 0x00 },
69};
70
71static 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
82static 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
93static 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
103static DECLARE_TLV_DB_SCALE(classd_ctl_tlv, 900, 300, 0);
104
105static const struct snd_kcontrol_new imon_ctl =
106 SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 6, 1, 1);
107
108static const struct snd_kcontrol_new vmon_ctl =
109 SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 7, 1, 1);
110
111static const struct snd_kcontrol_new vpmon_ctl =
112 SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 5, 1, 1);
113
114static 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
121static 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
137static 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
152static 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
173static 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
181static const struct snd_soc_dai_ops cs35l32_ops = {
182 .set_fmt = cs35l32_set_dai_fmt,
183 .set_tristate = cs35l32_set_tristate,
184};
185
186static 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
202static 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
228static 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 .non_legacy_dai_naming = 1,
240};
241
242
243static const struct reg_sequence cs35l32_monitor_patch[] = {
244
245 { 0x00, 0x99 },
246 { 0x48, 0x17 },
247 { 0x49, 0x56 },
248 { 0x43, 0x01 },
249 { 0x3B, 0x62 },
250 { 0x3C, 0x80 },
251 { 0x00, 0x00 },
252};
253
254static const struct regmap_config cs35l32_regmap = {
255 .reg_bits = 8,
256 .val_bits = 8,
257
258 .max_register = CS35L32_MAX_REGISTER,
259 .reg_defaults = cs35l32_reg_defaults,
260 .num_reg_defaults = ARRAY_SIZE(cs35l32_reg_defaults),
261 .volatile_reg = cs35l32_volatile_register,
262 .readable_reg = cs35l32_readable_register,
263 .precious_reg = cs35l32_precious_register,
264 .cache_type = REGCACHE_RBTREE,
265
266 .use_single_read = true,
267 .use_single_write = true,
268};
269
270static int cs35l32_handle_of_data(struct i2c_client *i2c_client,
271 struct cs35l32_platform_data *pdata)
272{
273 struct device_node *np = i2c_client->dev.of_node;
274 unsigned int val;
275
276 if (of_property_read_u32(np, "cirrus,sdout-share", &val) >= 0)
277 pdata->sdout_share = val;
278
279 if (of_property_read_u32(np, "cirrus,boost-manager", &val))
280 val = -1u;
281
282 switch (val) {
283 case CS35L32_BOOST_MGR_AUTO:
284 case CS35L32_BOOST_MGR_AUTO_AUDIO:
285 case CS35L32_BOOST_MGR_BYPASS:
286 case CS35L32_BOOST_MGR_FIXED:
287 pdata->boost_mng = val;
288 break;
289 case -1u:
290 default:
291 dev_err(&i2c_client->dev,
292 "Wrong cirrus,boost-manager DT value %d\n", val);
293 pdata->boost_mng = CS35L32_BOOST_MGR_BYPASS;
294 }
295
296 if (of_property_read_u32(np, "cirrus,sdout-datacfg", &val))
297 val = -1u;
298 switch (val) {
299 case CS35L32_DATA_CFG_LR_VP:
300 case CS35L32_DATA_CFG_LR_STAT:
301 case CS35L32_DATA_CFG_LR:
302 case CS35L32_DATA_CFG_LR_VPSTAT:
303 pdata->sdout_datacfg = val;
304 break;
305 case -1u:
306 default:
307 dev_err(&i2c_client->dev,
308 "Wrong cirrus,sdout-datacfg DT value %d\n", val);
309 pdata->sdout_datacfg = CS35L32_DATA_CFG_LR;
310 }
311
312 if (of_property_read_u32(np, "cirrus,battery-threshold", &val))
313 val = -1u;
314 switch (val) {
315 case CS35L32_BATT_THRESH_3_1V:
316 case CS35L32_BATT_THRESH_3_2V:
317 case CS35L32_BATT_THRESH_3_3V:
318 case CS35L32_BATT_THRESH_3_4V:
319 pdata->batt_thresh = val;
320 break;
321 case -1u:
322 default:
323 dev_err(&i2c_client->dev,
324 "Wrong cirrus,battery-threshold DT value %d\n", val);
325 pdata->batt_thresh = CS35L32_BATT_THRESH_3_3V;
326 }
327
328 if (of_property_read_u32(np, "cirrus,battery-recovery", &val))
329 val = -1u;
330 switch (val) {
331 case CS35L32_BATT_RECOV_3_1V:
332 case CS35L32_BATT_RECOV_3_2V:
333 case CS35L32_BATT_RECOV_3_3V:
334 case CS35L32_BATT_RECOV_3_4V:
335 case CS35L32_BATT_RECOV_3_5V:
336 case CS35L32_BATT_RECOV_3_6V:
337 pdata->batt_recov = val;
338 break;
339 case -1u:
340 default:
341 dev_err(&i2c_client->dev,
342 "Wrong cirrus,battery-recovery DT value %d\n", val);
343 pdata->batt_recov = CS35L32_BATT_RECOV_3_4V;
344 }
345
346 return 0;
347}
348
349static int cs35l32_i2c_probe(struct i2c_client *i2c_client,
350 const struct i2c_device_id *id)
351{
352 struct cs35l32_private *cs35l32;
353 struct cs35l32_platform_data *pdata =
354 dev_get_platdata(&i2c_client->dev);
355 int ret, i, devid;
356 unsigned int reg;
357
358 cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(*cs35l32), GFP_KERNEL);
359 if (!cs35l32)
360 return -ENOMEM;
361
362 i2c_set_clientdata(i2c_client, cs35l32);
363
364 cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap);
365 if (IS_ERR(cs35l32->regmap)) {
366 ret = PTR_ERR(cs35l32->regmap);
367 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
368 return ret;
369 }
370
371 if (pdata) {
372 cs35l32->pdata = *pdata;
373 } else {
374 pdata = devm_kzalloc(&i2c_client->dev, sizeof(*pdata),
375 GFP_KERNEL);
376 if (!pdata)
377 return -ENOMEM;
378
379 if (i2c_client->dev.of_node) {
380 ret = cs35l32_handle_of_data(i2c_client,
381 &cs35l32->pdata);
382 if (ret != 0)
383 return ret;
384 }
385 }
386
387 for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++)
388 cs35l32->supplies[i].supply = cs35l32_supply_names[i];
389
390 ret = devm_regulator_bulk_get(&i2c_client->dev,
391 ARRAY_SIZE(cs35l32->supplies),
392 cs35l32->supplies);
393 if (ret != 0) {
394 dev_err(&i2c_client->dev,
395 "Failed to request supplies: %d\n", ret);
396 return ret;
397 }
398
399 ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
400 cs35l32->supplies);
401 if (ret != 0) {
402 dev_err(&i2c_client->dev,
403 "Failed to enable supplies: %d\n", ret);
404 return ret;
405 }
406
407
408 cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
409 "reset", GPIOD_OUT_LOW);
410 if (IS_ERR(cs35l32->reset_gpio)) {
411 ret = PTR_ERR(cs35l32->reset_gpio);
412 goto err_supplies;
413 }
414
415 gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
416
417
418 devid = cirrus_read_device_id(cs35l32->regmap, CS35L32_DEVID_AB);
419 if (devid < 0) {
420 ret = devid;
421 dev_err(&i2c_client->dev, "Failed to read device ID: %d\n", ret);
422 goto err_disable;
423 }
424
425 if (devid != CS35L32_CHIP_ID) {
426 ret = -ENODEV;
427 dev_err(&i2c_client->dev,
428 "CS35L32 Device ID (%X). Expected %X\n",
429 devid, CS35L32_CHIP_ID);
430 goto err_disable;
431 }
432
433 ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, ®);
434 if (ret < 0) {
435 dev_err(&i2c_client->dev, "Get Revision ID failed\n");
436 goto err_disable;
437 }
438
439 ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch,
440 ARRAY_SIZE(cs35l32_monitor_patch));
441 if (ret < 0) {
442 dev_err(&i2c_client->dev, "Failed to apply errata patch\n");
443 goto err_disable;
444 }
445
446 dev_info(&i2c_client->dev,
447 "Cirrus Logic CS35L32, Revision: %02X\n", reg & 0xFF);
448
449
450 if (cs35l32->pdata.boost_mng)
451 regmap_update_bits(cs35l32->regmap, CS35L32_AUDIO_LED_MNGR,
452 CS35L32_BOOST_MASK,
453 cs35l32->pdata.boost_mng);
454
455
456 if (cs35l32->pdata.sdout_share)
457 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
458 CS35L32_ADSP_SHARE_MASK,
459 cs35l32->pdata.sdout_share << 3);
460
461
462 if (cs35l32->pdata.sdout_datacfg)
463 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
464 CS35L32_ADSP_DATACFG_MASK,
465 cs35l32->pdata.sdout_datacfg << 4);
466
467
468 if (cs35l32->pdata.batt_recov)
469 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
470 CS35L32_BATT_REC_MASK,
471 cs35l32->pdata.batt_recov << 1);
472
473
474 if (cs35l32->pdata.batt_thresh)
475 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
476 CS35L32_BATT_THRESH_MASK,
477 cs35l32->pdata.batt_thresh << 4);
478
479
480 regmap_update_bits(cs35l32->regmap, CS35L32_PWRCTL1, CS35L32_PDN_AMP,
481 CS35L32_PDN_AMP);
482
483
484 regmap_read(cs35l32->regmap, CS35L32_INT_STATUS_1, ®);
485
486 ret = devm_snd_soc_register_component(&i2c_client->dev,
487 &soc_component_dev_cs35l32, cs35l32_dai,
488 ARRAY_SIZE(cs35l32_dai));
489 if (ret < 0)
490 goto err_disable;
491
492 return 0;
493
494err_disable:
495 gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
496err_supplies:
497 regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
498 cs35l32->supplies);
499 return ret;
500}
501
502static int cs35l32_i2c_remove(struct i2c_client *i2c_client)
503{
504 struct cs35l32_private *cs35l32 = i2c_get_clientdata(i2c_client);
505
506
507 gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
508
509 return 0;
510}
511
512#ifdef CONFIG_PM
513static int cs35l32_runtime_suspend(struct device *dev)
514{
515 struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
516
517 regcache_cache_only(cs35l32->regmap, true);
518 regcache_mark_dirty(cs35l32->regmap);
519
520
521 gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
522
523
524 regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
525 cs35l32->supplies);
526
527 return 0;
528}
529
530static int cs35l32_runtime_resume(struct device *dev)
531{
532 struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
533 int ret;
534
535
536 ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
537 cs35l32->supplies);
538 if (ret != 0) {
539 dev_err(dev, "Failed to enable supplies: %d\n",
540 ret);
541 return ret;
542 }
543
544 gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
545
546 regcache_cache_only(cs35l32->regmap, false);
547 regcache_sync(cs35l32->regmap);
548
549 return 0;
550}
551#endif
552
553static const struct dev_pm_ops cs35l32_runtime_pm = {
554 SET_RUNTIME_PM_OPS(cs35l32_runtime_suspend, cs35l32_runtime_resume,
555 NULL)
556};
557
558static const struct of_device_id cs35l32_of_match[] = {
559 { .compatible = "cirrus,cs35l32", },
560 {},
561};
562MODULE_DEVICE_TABLE(of, cs35l32_of_match);
563
564
565static const struct i2c_device_id cs35l32_id[] = {
566 {"cs35l32", 0},
567 {}
568};
569
570MODULE_DEVICE_TABLE(i2c, cs35l32_id);
571
572static struct i2c_driver cs35l32_i2c_driver = {
573 .driver = {
574 .name = "cs35l32",
575 .pm = &cs35l32_runtime_pm,
576 .of_match_table = cs35l32_of_match,
577 },
578 .id_table = cs35l32_id,
579 .probe = cs35l32_i2c_probe,
580 .remove = cs35l32_i2c_remove,
581};
582
583module_i2c_driver(cs35l32_i2c_driver);
584
585MODULE_DESCRIPTION("ASoC CS35L32 driver");
586MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>");
587MODULE_LICENSE("GPL");
588
