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13#include <linux/clk.h>
14#include <linux/delay.h>
15#include <linux/module.h>
16#include <linux/of_device.h>
17#include <linux/gpio/consumer.h>
18#include <linux/pm_runtime.h>
19#include <linux/regulator/consumer.h>
20#include <sound/pcm_params.h>
21#include <sound/soc.h>
22#include <sound/tlv.h>
23
24#include "cs42xx8.h"
25
26#define CS42XX8_NUM_SUPPLIES 4
27static const char *const cs42xx8_supply_names[CS42XX8_NUM_SUPPLIES] = {
28 "VA",
29 "VD",
30 "VLS",
31 "VLC",
32};
33
34#define CS42XX8_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
35 SNDRV_PCM_FMTBIT_S20_3LE | \
36 SNDRV_PCM_FMTBIT_S24_LE | \
37 SNDRV_PCM_FMTBIT_S32_LE)
38
39
40struct cs42xx8_priv {
41 struct regulator_bulk_data supplies[CS42XX8_NUM_SUPPLIES];
42 const struct cs42xx8_driver_data *drvdata;
43 struct regmap *regmap;
44 struct clk *clk;
45
46 bool slave_mode;
47 unsigned long sysclk;
48 u32 tx_channels;
49 struct gpio_desc *gpiod_reset;
50 u32 rate[2];
51};
52
53
54static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
55
56static const DECLARE_TLV_DB_SCALE(adc_tlv, -6400, 50, 0);
57
58static const char *const cs42xx8_adc_single[] = { "Differential", "Single-Ended" };
59static const char *const cs42xx8_szc[] = { "Immediate Change", "Zero Cross",
60 "Soft Ramp", "Soft Ramp on Zero Cross" };
61
62static const struct soc_enum adc1_single_enum =
63 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 4, 2, cs42xx8_adc_single);
64static const struct soc_enum adc2_single_enum =
65 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 3, 2, cs42xx8_adc_single);
66static const struct soc_enum adc3_single_enum =
67 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 2, 2, cs42xx8_adc_single);
68static const struct soc_enum dac_szc_enum =
69 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 5, 4, cs42xx8_szc);
70static const struct soc_enum adc_szc_enum =
71 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 0, 4, cs42xx8_szc);
72
73static const struct snd_kcontrol_new cs42xx8_snd_controls[] = {
74 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", CS42XX8_VOLAOUT1,
75 CS42XX8_VOLAOUT2, 0, 0xff, 1, dac_tlv),
76 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", CS42XX8_VOLAOUT3,
77 CS42XX8_VOLAOUT4, 0, 0xff, 1, dac_tlv),
78 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", CS42XX8_VOLAOUT5,
79 CS42XX8_VOLAOUT6, 0, 0xff, 1, dac_tlv),
80 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", CS42XX8_VOLAOUT7,
81 CS42XX8_VOLAOUT8, 0, 0xff, 1, dac_tlv),
82 SOC_DOUBLE_R_S_TLV("ADC1 Capture Volume", CS42XX8_VOLAIN1,
83 CS42XX8_VOLAIN2, 0, -0x80, 0x30, 7, 0, adc_tlv),
84 SOC_DOUBLE_R_S_TLV("ADC2 Capture Volume", CS42XX8_VOLAIN3,
85 CS42XX8_VOLAIN4, 0, -0x80, 0x30, 7, 0, adc_tlv),
86 SOC_DOUBLE("DAC1 Invert Switch", CS42XX8_DACINV, 0, 1, 1, 0),
87 SOC_DOUBLE("DAC2 Invert Switch", CS42XX8_DACINV, 2, 3, 1, 0),
88 SOC_DOUBLE("DAC3 Invert Switch", CS42XX8_DACINV, 4, 5, 1, 0),
89 SOC_DOUBLE("DAC4 Invert Switch", CS42XX8_DACINV, 6, 7, 1, 0),
90 SOC_DOUBLE("ADC1 Invert Switch", CS42XX8_ADCINV, 0, 1, 1, 0),
91 SOC_DOUBLE("ADC2 Invert Switch", CS42XX8_ADCINV, 2, 3, 1, 0),
92 SOC_SINGLE("ADC High-Pass Filter Switch", CS42XX8_ADCCTL, 7, 1, 1),
93 SOC_SINGLE("DAC De-emphasis Switch", CS42XX8_ADCCTL, 5, 1, 0),
94 SOC_ENUM("ADC1 Single Ended Mode Switch", adc1_single_enum),
95 SOC_ENUM("ADC2 Single Ended Mode Switch", adc2_single_enum),
96 SOC_SINGLE("DAC Single Volume Control Switch", CS42XX8_TXCTL, 7, 1, 0),
97 SOC_ENUM("DAC Soft Ramp & Zero Cross Control Switch", dac_szc_enum),
98 SOC_SINGLE("DAC Auto Mute Switch", CS42XX8_TXCTL, 4, 1, 0),
99 SOC_SINGLE("Mute ADC Serial Port Switch", CS42XX8_TXCTL, 3, 1, 0),
100 SOC_SINGLE("ADC Single Volume Control Switch", CS42XX8_TXCTL, 2, 1, 0),
101 SOC_ENUM("ADC Soft Ramp & Zero Cross Control Switch", adc_szc_enum),
102};
103
104static const struct snd_kcontrol_new cs42xx8_adc3_snd_controls[] = {
105 SOC_DOUBLE_R_S_TLV("ADC3 Capture Volume", CS42XX8_VOLAIN5,
106 CS42XX8_VOLAIN6, 0, -0x80, 0x30, 7, 0, adc_tlv),
107 SOC_DOUBLE("ADC3 Invert Switch", CS42XX8_ADCINV, 4, 5, 1, 0),
108 SOC_ENUM("ADC3 Single Ended Mode Switch", adc3_single_enum),
109};
110
111static const struct snd_soc_dapm_widget cs42xx8_dapm_widgets[] = {
112 SND_SOC_DAPM_DAC("DAC1", "Playback", CS42XX8_PWRCTL, 1, 1),
113 SND_SOC_DAPM_DAC("DAC2", "Playback", CS42XX8_PWRCTL, 2, 1),
114 SND_SOC_DAPM_DAC("DAC3", "Playback", CS42XX8_PWRCTL, 3, 1),
115 SND_SOC_DAPM_DAC("DAC4", "Playback", CS42XX8_PWRCTL, 4, 1),
116
117 SND_SOC_DAPM_OUTPUT("AOUT1L"),
118 SND_SOC_DAPM_OUTPUT("AOUT1R"),
119 SND_SOC_DAPM_OUTPUT("AOUT2L"),
120 SND_SOC_DAPM_OUTPUT("AOUT2R"),
121 SND_SOC_DAPM_OUTPUT("AOUT3L"),
122 SND_SOC_DAPM_OUTPUT("AOUT3R"),
123 SND_SOC_DAPM_OUTPUT("AOUT4L"),
124 SND_SOC_DAPM_OUTPUT("AOUT4R"),
125
126 SND_SOC_DAPM_ADC("ADC1", "Capture", CS42XX8_PWRCTL, 5, 1),
127 SND_SOC_DAPM_ADC("ADC2", "Capture", CS42XX8_PWRCTL, 6, 1),
128
129 SND_SOC_DAPM_INPUT("AIN1L"),
130 SND_SOC_DAPM_INPUT("AIN1R"),
131 SND_SOC_DAPM_INPUT("AIN2L"),
132 SND_SOC_DAPM_INPUT("AIN2R"),
133
134 SND_SOC_DAPM_SUPPLY("PWR", CS42XX8_PWRCTL, 0, 1, NULL, 0),
135};
136
137static const struct snd_soc_dapm_widget cs42xx8_adc3_dapm_widgets[] = {
138 SND_SOC_DAPM_ADC("ADC3", "Capture", CS42XX8_PWRCTL, 7, 1),
139
140 SND_SOC_DAPM_INPUT("AIN3L"),
141 SND_SOC_DAPM_INPUT("AIN3R"),
142};
143
144static const struct snd_soc_dapm_route cs42xx8_dapm_routes[] = {
145
146 { "AOUT1L", NULL, "DAC1" },
147 { "AOUT1R", NULL, "DAC1" },
148 { "DAC1", NULL, "PWR" },
149
150 { "AOUT2L", NULL, "DAC2" },
151 { "AOUT2R", NULL, "DAC2" },
152 { "DAC2", NULL, "PWR" },
153
154 { "AOUT3L", NULL, "DAC3" },
155 { "AOUT3R", NULL, "DAC3" },
156 { "DAC3", NULL, "PWR" },
157
158 { "AOUT4L", NULL, "DAC4" },
159 { "AOUT4R", NULL, "DAC4" },
160 { "DAC4", NULL, "PWR" },
161
162
163 { "ADC1", NULL, "AIN1L" },
164 { "ADC1", NULL, "AIN1R" },
165 { "ADC1", NULL, "PWR" },
166
167 { "ADC2", NULL, "AIN2L" },
168 { "ADC2", NULL, "AIN2R" },
169 { "ADC2", NULL, "PWR" },
170};
171
172static const struct snd_soc_dapm_route cs42xx8_adc3_dapm_routes[] = {
173
174 { "ADC3", NULL, "AIN3L" },
175 { "ADC3", NULL, "AIN3R" },
176 { "ADC3", NULL, "PWR" },
177};
178
179struct cs42xx8_ratios {
180 unsigned int mfreq;
181 unsigned int min_mclk;
182 unsigned int max_mclk;
183 unsigned int ratio[3];
184};
185
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189
190
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192
193
194
195static const struct cs42xx8_ratios cs42xx8_ratios[] = {
196 { 0, 1029000, 12800000, {256, 128, 64} },
197 { 2, 1536000, 19200000, {384, 192, 96} },
198 { 4, 2048000, 25600000, {512, 256, 128} },
199 { 6, 3072000, 38400000, {768, 384, 192} },
200 { 8, 4096000, 51200000, {1024, 512, 256} },
201};
202
203static int cs42xx8_set_dai_sysclk(struct snd_soc_dai *codec_dai,
204 int clk_id, unsigned int freq, int dir)
205{
206 struct snd_soc_component *component = codec_dai->component;
207 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
208
209 cs42xx8->sysclk = freq;
210
211 return 0;
212}
213
214static int cs42xx8_set_dai_fmt(struct snd_soc_dai *codec_dai,
215 unsigned int format)
216{
217 struct snd_soc_component *component = codec_dai->component;
218 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
219 u32 val;
220
221
222 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
223 case SND_SOC_DAIFMT_LEFT_J:
224 val = CS42XX8_INTF_DAC_DIF_LEFTJ | CS42XX8_INTF_ADC_DIF_LEFTJ;
225 break;
226 case SND_SOC_DAIFMT_I2S:
227 val = CS42XX8_INTF_DAC_DIF_I2S | CS42XX8_INTF_ADC_DIF_I2S;
228 break;
229 case SND_SOC_DAIFMT_RIGHT_J:
230 val = CS42XX8_INTF_DAC_DIF_RIGHTJ | CS42XX8_INTF_ADC_DIF_RIGHTJ;
231 break;
232 case SND_SOC_DAIFMT_DSP_A:
233 val = CS42XX8_INTF_DAC_DIF_TDM | CS42XX8_INTF_ADC_DIF_TDM;
234 break;
235 default:
236 dev_err(component->dev, "unsupported dai format\n");
237 return -EINVAL;
238 }
239
240 regmap_update_bits(cs42xx8->regmap, CS42XX8_INTF,
241 CS42XX8_INTF_DAC_DIF_MASK |
242 CS42XX8_INTF_ADC_DIF_MASK, val);
243
244
245 switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
246 case SND_SOC_DAIFMT_CBS_CFS:
247 cs42xx8->slave_mode = true;
248 break;
249 case SND_SOC_DAIFMT_CBM_CFM:
250 cs42xx8->slave_mode = false;
251 break;
252 default:
253 dev_err(component->dev, "unsupported master/slave mode\n");
254 return -EINVAL;
255 }
256
257 return 0;
258}
259
260static int cs42xx8_hw_params(struct snd_pcm_substream *substream,
261 struct snd_pcm_hw_params *params,
262 struct snd_soc_dai *dai)
263{
264 struct snd_soc_component *component = dai->component;
265 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
266 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
267 u32 ratio[2];
268 u32 rate[2];
269 u32 fm[2];
270 u32 i, val, mask;
271 bool condition1, condition2;
272
273 if (tx)
274 cs42xx8->tx_channels = params_channels(params);
275
276 rate[tx] = params_rate(params);
277 rate[!tx] = cs42xx8->rate[!tx];
278
279 ratio[tx] = rate[tx] > 0 ? cs42xx8->sysclk / rate[tx] : 0;
280 ratio[!tx] = rate[!tx] > 0 ? cs42xx8->sysclk / rate[!tx] : 0;
281
282
283 for (i = 0; i < 2; i++) {
284 if (cs42xx8->slave_mode) {
285 fm[i] = CS42XX8_FM_AUTO;
286 } else {
287 if (rate[i] < 50000) {
288 fm[i] = CS42XX8_FM_SINGLE;
289 } else if (rate[i] > 50000 && rate[i] < 100000) {
290 fm[i] = CS42XX8_FM_DOUBLE;
291 } else if (rate[i] > 100000 && rate[i] < 200000) {
292 fm[i] = CS42XX8_FM_QUAD;
293 } else {
294 dev_err(component->dev,
295 "unsupported sample rate\n");
296 return -EINVAL;
297 }
298 }
299 }
300
301 for (i = 0; i < ARRAY_SIZE(cs42xx8_ratios); i++) {
302
303 condition1 = ((fm[tx] == CS42XX8_FM_AUTO) ?
304 (cs42xx8_ratios[i].ratio[0] == ratio[tx] ||
305 cs42xx8_ratios[i].ratio[1] == ratio[tx] ||
306 cs42xx8_ratios[i].ratio[2] == ratio[tx]) :
307 (cs42xx8_ratios[i].ratio[fm[tx]] == ratio[tx])) &&
308 cs42xx8->sysclk >= cs42xx8_ratios[i].min_mclk &&
309 cs42xx8->sysclk <= cs42xx8_ratios[i].max_mclk;
310
311 if (!ratio[tx])
312 condition1 = true;
313
314
315 condition2 = ((fm[!tx] == CS42XX8_FM_AUTO) ?
316 (cs42xx8_ratios[i].ratio[0] == ratio[!tx] ||
317 cs42xx8_ratios[i].ratio[1] == ratio[!tx] ||
318 cs42xx8_ratios[i].ratio[2] == ratio[!tx]) :
319 (cs42xx8_ratios[i].ratio[fm[!tx]] == ratio[!tx]));
320
321 if (!ratio[!tx])
322 condition2 = true;
323
324
325
326
327
328 if (condition1 && condition2)
329 break;
330 }
331
332 if (i == ARRAY_SIZE(cs42xx8_ratios)) {
333 dev_err(component->dev, "unsupported sysclk ratio\n");
334 return -EINVAL;
335 }
336
337 cs42xx8->rate[tx] = params_rate(params);
338
339 mask = CS42XX8_FUNCMOD_MFREQ_MASK;
340 val = cs42xx8_ratios[i].mfreq;
341
342 regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD,
343 CS42XX8_FUNCMOD_xC_FM_MASK(tx) | mask,
344 CS42XX8_FUNCMOD_xC_FM(tx, fm[tx]) | val);
345
346 return 0;
347}
348
349static int cs42xx8_hw_free(struct snd_pcm_substream *substream,
350 struct snd_soc_dai *dai)
351{
352 struct snd_soc_component *component = dai->component;
353 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
354 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
355
356
357 cs42xx8->rate[tx] = 0;
358
359 regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD,
360 CS42XX8_FUNCMOD_xC_FM_MASK(tx),
361 CS42XX8_FUNCMOD_xC_FM(tx, CS42XX8_FM_AUTO));
362 return 0;
363}
364
365static int cs42xx8_mute(struct snd_soc_dai *dai, int mute, int direction)
366{
367 struct snd_soc_component *component = dai->component;
368 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
369 u8 dac_unmute = cs42xx8->tx_channels ?
370 ~((0x1 << cs42xx8->tx_channels) - 1) : 0;
371
372 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE,
373 mute ? CS42XX8_DACMUTE_ALL : dac_unmute);
374
375 return 0;
376}
377
378static const struct snd_soc_dai_ops cs42xx8_dai_ops = {
379 .set_fmt = cs42xx8_set_dai_fmt,
380 .set_sysclk = cs42xx8_set_dai_sysclk,
381 .hw_params = cs42xx8_hw_params,
382 .hw_free = cs42xx8_hw_free,
383 .mute_stream = cs42xx8_mute,
384 .no_capture_mute = 1,
385};
386
387static struct snd_soc_dai_driver cs42xx8_dai = {
388 .playback = {
389 .stream_name = "Playback",
390 .channels_min = 1,
391 .channels_max = 8,
392 .rates = SNDRV_PCM_RATE_8000_192000,
393 .formats = CS42XX8_FORMATS,
394 },
395 .capture = {
396 .stream_name = "Capture",
397 .channels_min = 1,
398 .rates = SNDRV_PCM_RATE_8000_192000,
399 .formats = CS42XX8_FORMATS,
400 },
401 .ops = &cs42xx8_dai_ops,
402};
403
404static const struct reg_default cs42xx8_reg[] = {
405 { 0x02, 0x00 },
406 { 0x03, 0xF0 },
407 { 0x04, 0x46 },
408 { 0x05, 0x00 },
409 { 0x06, 0x10 },
410 { 0x07, 0x00 },
411 { 0x08, 0x00 },
412 { 0x09, 0x00 },
413 { 0x0a, 0x00 },
414 { 0x0b, 0x00 },
415 { 0x0c, 0x00 },
416 { 0x0d, 0x00 },
417 { 0x0e, 0x00 },
418 { 0x0f, 0x00 },
419 { 0x10, 0x00 },
420 { 0x11, 0x00 },
421 { 0x12, 0x00 },
422 { 0x13, 0x00 },
423 { 0x14, 0x00 },
424 { 0x15, 0x00 },
425 { 0x16, 0x00 },
426 { 0x17, 0x00 },
427 { 0x18, 0x00 },
428 { 0x1a, 0x00 },
429 { 0x1b, 0x00 },
430};
431
432static bool cs42xx8_volatile_register(struct device *dev, unsigned int reg)
433{
434 switch (reg) {
435 case CS42XX8_STATUS:
436 return true;
437 default:
438 return false;
439 }
440}
441
442static bool cs42xx8_writeable_register(struct device *dev, unsigned int reg)
443{
444 switch (reg) {
445 case CS42XX8_CHIPID:
446 case CS42XX8_STATUS:
447 return false;
448 default:
449 return true;
450 }
451}
452
453const struct regmap_config cs42xx8_regmap_config = {
454 .reg_bits = 8,
455 .val_bits = 8,
456
457 .max_register = CS42XX8_LASTREG,
458 .reg_defaults = cs42xx8_reg,
459 .num_reg_defaults = ARRAY_SIZE(cs42xx8_reg),
460 .volatile_reg = cs42xx8_volatile_register,
461 .writeable_reg = cs42xx8_writeable_register,
462 .cache_type = REGCACHE_RBTREE,
463};
464EXPORT_SYMBOL_GPL(cs42xx8_regmap_config);
465
466static int cs42xx8_component_probe(struct snd_soc_component *component)
467{
468 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
469 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
470
471 switch (cs42xx8->drvdata->num_adcs) {
472 case 3:
473 snd_soc_add_component_controls(component, cs42xx8_adc3_snd_controls,
474 ARRAY_SIZE(cs42xx8_adc3_snd_controls));
475 snd_soc_dapm_new_controls(dapm, cs42xx8_adc3_dapm_widgets,
476 ARRAY_SIZE(cs42xx8_adc3_dapm_widgets));
477 snd_soc_dapm_add_routes(dapm, cs42xx8_adc3_dapm_routes,
478 ARRAY_SIZE(cs42xx8_adc3_dapm_routes));
479 break;
480 default:
481 break;
482 }
483
484
485 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE, CS42XX8_DACMUTE_ALL);
486
487 return 0;
488}
489
490static const struct snd_soc_component_driver cs42xx8_driver = {
491 .probe = cs42xx8_component_probe,
492 .controls = cs42xx8_snd_controls,
493 .num_controls = ARRAY_SIZE(cs42xx8_snd_controls),
494 .dapm_widgets = cs42xx8_dapm_widgets,
495 .num_dapm_widgets = ARRAY_SIZE(cs42xx8_dapm_widgets),
496 .dapm_routes = cs42xx8_dapm_routes,
497 .num_dapm_routes = ARRAY_SIZE(cs42xx8_dapm_routes),
498 .use_pmdown_time = 1,
499 .endianness = 1,
500 .non_legacy_dai_naming = 1,
501};
502
503const struct cs42xx8_driver_data cs42448_data = {
504 .name = "cs42448",
505 .num_adcs = 3,
506};
507EXPORT_SYMBOL_GPL(cs42448_data);
508
509const struct cs42xx8_driver_data cs42888_data = {
510 .name = "cs42888",
511 .num_adcs = 2,
512};
513EXPORT_SYMBOL_GPL(cs42888_data);
514
515const struct of_device_id cs42xx8_of_match[] = {
516 { .compatible = "cirrus,cs42448", .data = &cs42448_data, },
517 { .compatible = "cirrus,cs42888", .data = &cs42888_data, },
518 { }
519};
520MODULE_DEVICE_TABLE(of, cs42xx8_of_match);
521EXPORT_SYMBOL_GPL(cs42xx8_of_match);
522
523int cs42xx8_probe(struct device *dev, struct regmap *regmap)
524{
525 const struct of_device_id *of_id;
526 struct cs42xx8_priv *cs42xx8;
527 int ret, val, i;
528
529 if (IS_ERR(regmap)) {
530 ret = PTR_ERR(regmap);
531 dev_err(dev, "failed to allocate regmap: %d\n", ret);
532 return ret;
533 }
534
535 cs42xx8 = devm_kzalloc(dev, sizeof(*cs42xx8), GFP_KERNEL);
536 if (cs42xx8 == NULL)
537 return -ENOMEM;
538
539 cs42xx8->regmap = regmap;
540 dev_set_drvdata(dev, cs42xx8);
541
542 of_id = of_match_device(cs42xx8_of_match, dev);
543 if (of_id)
544 cs42xx8->drvdata = of_id->data;
545
546 if (!cs42xx8->drvdata) {
547 dev_err(dev, "failed to find driver data\n");
548 return -EINVAL;
549 }
550
551 cs42xx8->gpiod_reset = devm_gpiod_get_optional(dev, "reset",
552 GPIOD_OUT_HIGH);
553 if (IS_ERR(cs42xx8->gpiod_reset))
554 return PTR_ERR(cs42xx8->gpiod_reset);
555
556 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0);
557
558 cs42xx8->clk = devm_clk_get(dev, "mclk");
559 if (IS_ERR(cs42xx8->clk)) {
560 dev_err(dev, "failed to get the clock: %ld\n",
561 PTR_ERR(cs42xx8->clk));
562 return -EINVAL;
563 }
564
565 cs42xx8->sysclk = clk_get_rate(cs42xx8->clk);
566
567 for (i = 0; i < ARRAY_SIZE(cs42xx8->supplies); i++)
568 cs42xx8->supplies[i].supply = cs42xx8_supply_names[i];
569
570 ret = devm_regulator_bulk_get(dev,
571 ARRAY_SIZE(cs42xx8->supplies), cs42xx8->supplies);
572 if (ret) {
573 dev_err(dev, "failed to request supplies: %d\n", ret);
574 return ret;
575 }
576
577 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies),
578 cs42xx8->supplies);
579 if (ret) {
580 dev_err(dev, "failed to enable supplies: %d\n", ret);
581 return ret;
582 }
583
584
585 msleep(5);
586
587
588 ret = regmap_read(cs42xx8->regmap, CS42XX8_CHIPID, &val);
589 if (ret < 0) {
590 dev_err(dev, "failed to get device ID, ret = %d", ret);
591 goto err_enable;
592 }
593
594
595 if (((val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4) != 0x00) {
596 dev_err(dev, "unmatched chip ID: %d\n",
597 (val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4);
598 ret = -EINVAL;
599 goto err_enable;
600 }
601
602 dev_info(dev, "found device, revision %X\n",
603 val & CS42XX8_CHIPID_REV_ID_MASK);
604
605 cs42xx8_dai.name = cs42xx8->drvdata->name;
606
607
608 cs42xx8_dai.capture.channels_max = cs42xx8->drvdata->num_adcs * 2;
609
610 ret = devm_snd_soc_register_component(dev, &cs42xx8_driver, &cs42xx8_dai, 1);
611 if (ret) {
612 dev_err(dev, "failed to register component:%d\n", ret);
613 goto err_enable;
614 }
615
616 regcache_cache_only(cs42xx8->regmap, true);
617
618err_enable:
619 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
620 cs42xx8->supplies);
621
622 return ret;
623}
624EXPORT_SYMBOL_GPL(cs42xx8_probe);
625
626#ifdef CONFIG_PM
627static int cs42xx8_runtime_resume(struct device *dev)
628{
629 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev);
630 int ret;
631
632 ret = clk_prepare_enable(cs42xx8->clk);
633 if (ret) {
634 dev_err(dev, "failed to enable mclk: %d\n", ret);
635 return ret;
636 }
637
638 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0);
639
640 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies),
641 cs42xx8->supplies);
642 if (ret) {
643 dev_err(dev, "failed to enable supplies: %d\n", ret);
644 goto err_clk;
645 }
646
647
648 msleep(5);
649
650 regcache_cache_only(cs42xx8->regmap, false);
651 regcache_mark_dirty(cs42xx8->regmap);
652
653 ret = regcache_sync(cs42xx8->regmap);
654 if (ret) {
655 dev_err(dev, "failed to sync regmap: %d\n", ret);
656 goto err_bulk;
657 }
658
659 return 0;
660
661err_bulk:
662 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
663 cs42xx8->supplies);
664err_clk:
665 clk_disable_unprepare(cs42xx8->clk);
666
667 return ret;
668}
669
670static int cs42xx8_runtime_suspend(struct device *dev)
671{
672 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev);
673
674 regcache_cache_only(cs42xx8->regmap, true);
675
676 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
677 cs42xx8->supplies);
678
679 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 1);
680
681 clk_disable_unprepare(cs42xx8->clk);
682
683 return 0;
684}
685#endif
686
687const struct dev_pm_ops cs42xx8_pm = {
688 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
689 pm_runtime_force_resume)
690 SET_RUNTIME_PM_OPS(cs42xx8_runtime_suspend, cs42xx8_runtime_resume, NULL)
691};
692EXPORT_SYMBOL_GPL(cs42xx8_pm);
693
694MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec Driver");
695MODULE_AUTHOR("Freescale Semiconductor, Inc.");
696MODULE_LICENSE("GPL");
697
