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13#include <linux/module.h>
14#include <linux/slab.h>
15#include <linux/delay.h>
16#include <linux/gpio.h>
17#include <linux/of.h>
18#include <linux/of_device.h>
19#include <linux/of_gpio.h>
20#include <linux/regulator/consumer.h>
21#include <sound/pcm.h>
22#include <sound/soc.h>
23#include <sound/tlv.h>
24#include <sound/cs4271.h>
25#include "cs4271.h"
26
27#define CS4271_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
28 SNDRV_PCM_FMTBIT_S24_LE | \
29 SNDRV_PCM_FMTBIT_S32_LE)
30#define CS4271_PCM_RATES SNDRV_PCM_RATE_8000_192000
31
32
33
34
35#define CS4271_MODE1 0x01
36#define CS4271_DACCTL 0x02
37#define CS4271_DACVOL 0x03
38#define CS4271_VOLA 0x04
39#define CS4271_VOLB 0x05
40#define CS4271_ADCCTL 0x06
41#define CS4271_MODE2 0x07
42#define CS4271_CHIPID 0x08
43
44#define CS4271_FIRSTREG CS4271_MODE1
45#define CS4271_LASTREG CS4271_MODE2
46#define CS4271_NR_REGS ((CS4271_LASTREG & 0xFF) + 1)
47
48
49#define CS4271_MODE1_MODE_MASK 0xC0
50#define CS4271_MODE1_MODE_1X 0x00
51#define CS4271_MODE1_MODE_2X 0x80
52#define CS4271_MODE1_MODE_4X 0xC0
53
54#define CS4271_MODE1_DIV_MASK 0x30
55#define CS4271_MODE1_DIV_1 0x00
56#define CS4271_MODE1_DIV_15 0x10
57#define CS4271_MODE1_DIV_2 0x20
58#define CS4271_MODE1_DIV_3 0x30
59
60#define CS4271_MODE1_MASTER 0x08
61
62#define CS4271_MODE1_DAC_DIF_MASK 0x07
63#define CS4271_MODE1_DAC_DIF_LJ 0x00
64#define CS4271_MODE1_DAC_DIF_I2S 0x01
65#define CS4271_MODE1_DAC_DIF_RJ16 0x02
66#define CS4271_MODE1_DAC_DIF_RJ24 0x03
67#define CS4271_MODE1_DAC_DIF_RJ20 0x04
68#define CS4271_MODE1_DAC_DIF_RJ18 0x05
69
70#define CS4271_DACCTL_AMUTE 0x80
71#define CS4271_DACCTL_IF_SLOW 0x40
72
73#define CS4271_DACCTL_DEM_MASK 0x30
74#define CS4271_DACCTL_DEM_DIS 0x00
75#define CS4271_DACCTL_DEM_441 0x10
76#define CS4271_DACCTL_DEM_48 0x20
77#define CS4271_DACCTL_DEM_32 0x30
78
79#define CS4271_DACCTL_SVRU 0x08
80#define CS4271_DACCTL_SRD 0x04
81#define CS4271_DACCTL_INVA 0x02
82#define CS4271_DACCTL_INVB 0x01
83
84#define CS4271_DACVOL_BEQUA 0x40
85#define CS4271_DACVOL_SOFT 0x20
86#define CS4271_DACVOL_ZEROC 0x10
87
88#define CS4271_DACVOL_ATAPI_MASK 0x0F
89#define CS4271_DACVOL_ATAPI_M_M 0x00
90#define CS4271_DACVOL_ATAPI_M_BR 0x01
91#define CS4271_DACVOL_ATAPI_M_BL 0x02
92#define CS4271_DACVOL_ATAPI_M_BLR2 0x03
93#define CS4271_DACVOL_ATAPI_AR_M 0x04
94#define CS4271_DACVOL_ATAPI_AR_BR 0x05
95#define CS4271_DACVOL_ATAPI_AR_BL 0x06
96#define CS4271_DACVOL_ATAPI_AR_BLR2 0x07
97#define CS4271_DACVOL_ATAPI_AL_M 0x08
98#define CS4271_DACVOL_ATAPI_AL_BR 0x09
99#define CS4271_DACVOL_ATAPI_AL_BL 0x0A
100#define CS4271_DACVOL_ATAPI_AL_BLR2 0x0B
101#define CS4271_DACVOL_ATAPI_ALR2_M 0x0C
102#define CS4271_DACVOL_ATAPI_ALR2_BR 0x0D
103#define CS4271_DACVOL_ATAPI_ALR2_BL 0x0E
104#define CS4271_DACVOL_ATAPI_ALR2_BLR2 0x0F
105
106#define CS4271_VOLA_MUTE 0x80
107#define CS4271_VOLA_VOL_MASK 0x7F
108#define CS4271_VOLB_MUTE 0x80
109#define CS4271_VOLB_VOL_MASK 0x7F
110
111#define CS4271_ADCCTL_DITHER16 0x20
112
113#define CS4271_ADCCTL_ADC_DIF_MASK 0x10
114#define CS4271_ADCCTL_ADC_DIF_LJ 0x00
115#define CS4271_ADCCTL_ADC_DIF_I2S 0x10
116
117#define CS4271_ADCCTL_MUTEA 0x08
118#define CS4271_ADCCTL_MUTEB 0x04
119#define CS4271_ADCCTL_HPFDA 0x02
120#define CS4271_ADCCTL_HPFDB 0x01
121
122#define CS4271_MODE2_LOOP 0x10
123#define CS4271_MODE2_MUTECAEQUB 0x08
124#define CS4271_MODE2_FREEZE 0x04
125#define CS4271_MODE2_CPEN 0x02
126#define CS4271_MODE2_PDN 0x01
127
128#define CS4271_CHIPID_PART_MASK 0xF0
129#define CS4271_CHIPID_REV_MASK 0x0F
130
131
132
133
134
135
136
137static const struct reg_default cs4271_reg_defaults[] = {
138 { CS4271_MODE1, 0, },
139 { CS4271_DACCTL, CS4271_DACCTL_AMUTE, },
140 { CS4271_DACVOL, CS4271_DACVOL_SOFT | CS4271_DACVOL_ATAPI_AL_BR, },
141 { CS4271_VOLA, 0, },
142 { CS4271_VOLB, 0, },
143 { CS4271_ADCCTL, 0, },
144 { CS4271_MODE2, 0, },
145};
146
147static bool cs4271_volatile_reg(struct device *dev, unsigned int reg)
148{
149 return reg == CS4271_CHIPID;
150}
151
152static const char * const supply_names[] = {
153 "vd", "vl", "va"
154};
155
156struct cs4271_private {
157 unsigned int mclk;
158 bool master;
159 bool deemph;
160 struct regmap *regmap;
161
162 int rate;
163
164 int gpio_nreset;
165
166 int gpio_disable;
167
168 bool enable_soft_reset;
169 struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
170};
171
172static const struct snd_soc_dapm_widget cs4271_dapm_widgets[] = {
173SND_SOC_DAPM_INPUT("AINA"),
174SND_SOC_DAPM_INPUT("AINB"),
175
176SND_SOC_DAPM_OUTPUT("AOUTA+"),
177SND_SOC_DAPM_OUTPUT("AOUTA-"),
178SND_SOC_DAPM_OUTPUT("AOUTB+"),
179SND_SOC_DAPM_OUTPUT("AOUTB-"),
180};
181
182static const struct snd_soc_dapm_route cs4271_dapm_routes[] = {
183 { "Capture", NULL, "AINA" },
184 { "Capture", NULL, "AINB" },
185
186 { "AOUTA+", NULL, "Playback" },
187 { "AOUTA-", NULL, "Playback" },
188 { "AOUTB+", NULL, "Playback" },
189 { "AOUTB-", NULL, "Playback" },
190};
191
192
193
194
195
196
197static int cs4271_set_dai_sysclk(struct snd_soc_dai *codec_dai,
198 int clk_id, unsigned int freq, int dir)
199{
200 struct snd_soc_component *component = codec_dai->component;
201 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
202
203 cs4271->mclk = freq;
204 return 0;
205}
206
207static int cs4271_set_dai_fmt(struct snd_soc_dai *codec_dai,
208 unsigned int format)
209{
210 struct snd_soc_component *component = codec_dai->component;
211 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
212 unsigned int val = 0;
213 int ret;
214
215 switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
216 case SND_SOC_DAIFMT_CBS_CFS:
217 cs4271->master = false;
218 break;
219 case SND_SOC_DAIFMT_CBM_CFM:
220 cs4271->master = true;
221 val |= CS4271_MODE1_MASTER;
222 break;
223 default:
224 dev_err(component->dev, "Invalid DAI format\n");
225 return -EINVAL;
226 }
227
228 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
229 case SND_SOC_DAIFMT_LEFT_J:
230 val |= CS4271_MODE1_DAC_DIF_LJ;
231 ret = regmap_update_bits(cs4271->regmap, CS4271_ADCCTL,
232 CS4271_ADCCTL_ADC_DIF_MASK, CS4271_ADCCTL_ADC_DIF_LJ);
233 if (ret < 0)
234 return ret;
235 break;
236 case SND_SOC_DAIFMT_I2S:
237 val |= CS4271_MODE1_DAC_DIF_I2S;
238 ret = regmap_update_bits(cs4271->regmap, CS4271_ADCCTL,
239 CS4271_ADCCTL_ADC_DIF_MASK, CS4271_ADCCTL_ADC_DIF_I2S);
240 if (ret < 0)
241 return ret;
242 break;
243 default:
244 dev_err(component->dev, "Invalid DAI format\n");
245 return -EINVAL;
246 }
247
248 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE1,
249 CS4271_MODE1_DAC_DIF_MASK | CS4271_MODE1_MASTER, val);
250 if (ret < 0)
251 return ret;
252 return 0;
253}
254
255static int cs4271_deemph[] = {0, 44100, 48000, 32000};
256
257static int cs4271_set_deemph(struct snd_soc_component *component)
258{
259 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
260 int i, ret;
261 int val = CS4271_DACCTL_DEM_DIS;
262
263 if (cs4271->deemph) {
264
265 val = 1;
266 for (i = 2; i < ARRAY_SIZE(cs4271_deemph); i++)
267 if (abs(cs4271_deemph[i] - cs4271->rate) <
268 abs(cs4271_deemph[val] - cs4271->rate))
269 val = i;
270 val <<= 4;
271 }
272
273 ret = regmap_update_bits(cs4271->regmap, CS4271_DACCTL,
274 CS4271_DACCTL_DEM_MASK, val);
275 if (ret < 0)
276 return ret;
277 return 0;
278}
279
280static int cs4271_get_deemph(struct snd_kcontrol *kcontrol,
281 struct snd_ctl_elem_value *ucontrol)
282{
283 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
284 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
285
286 ucontrol->value.integer.value[0] = cs4271->deemph;
287 return 0;
288}
289
290static int cs4271_put_deemph(struct snd_kcontrol *kcontrol,
291 struct snd_ctl_elem_value *ucontrol)
292{
293 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
294 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
295
296 cs4271->deemph = ucontrol->value.integer.value[0];
297 return cs4271_set_deemph(component);
298}
299
300struct cs4271_clk_cfg {
301 bool master;
302 u8 speed_mode;
303 unsigned short ratio;
304 u8 ratio_mask;
305};
306
307static struct cs4271_clk_cfg cs4271_clk_tab[] = {
308 {1, CS4271_MODE1_MODE_1X, 256, CS4271_MODE1_DIV_1},
309 {1, CS4271_MODE1_MODE_1X, 384, CS4271_MODE1_DIV_15},
310 {1, CS4271_MODE1_MODE_1X, 512, CS4271_MODE1_DIV_2},
311 {1, CS4271_MODE1_MODE_1X, 768, CS4271_MODE1_DIV_3},
312 {1, CS4271_MODE1_MODE_2X, 128, CS4271_MODE1_DIV_1},
313 {1, CS4271_MODE1_MODE_2X, 192, CS4271_MODE1_DIV_15},
314 {1, CS4271_MODE1_MODE_2X, 256, CS4271_MODE1_DIV_2},
315 {1, CS4271_MODE1_MODE_2X, 384, CS4271_MODE1_DIV_3},
316 {1, CS4271_MODE1_MODE_4X, 64, CS4271_MODE1_DIV_1},
317 {1, CS4271_MODE1_MODE_4X, 96, CS4271_MODE1_DIV_15},
318 {1, CS4271_MODE1_MODE_4X, 128, CS4271_MODE1_DIV_2},
319 {1, CS4271_MODE1_MODE_4X, 192, CS4271_MODE1_DIV_3},
320 {0, CS4271_MODE1_MODE_1X, 256, CS4271_MODE1_DIV_1},
321 {0, CS4271_MODE1_MODE_1X, 384, CS4271_MODE1_DIV_1},
322 {0, CS4271_MODE1_MODE_1X, 512, CS4271_MODE1_DIV_1},
323 {0, CS4271_MODE1_MODE_1X, 768, CS4271_MODE1_DIV_2},
324 {0, CS4271_MODE1_MODE_1X, 1024, CS4271_MODE1_DIV_2},
325 {0, CS4271_MODE1_MODE_2X, 128, CS4271_MODE1_DIV_1},
326 {0, CS4271_MODE1_MODE_2X, 192, CS4271_MODE1_DIV_1},
327 {0, CS4271_MODE1_MODE_2X, 256, CS4271_MODE1_DIV_1},
328 {0, CS4271_MODE1_MODE_2X, 384, CS4271_MODE1_DIV_2},
329 {0, CS4271_MODE1_MODE_2X, 512, CS4271_MODE1_DIV_2},
330 {0, CS4271_MODE1_MODE_4X, 64, CS4271_MODE1_DIV_1},
331 {0, CS4271_MODE1_MODE_4X, 96, CS4271_MODE1_DIV_1},
332 {0, CS4271_MODE1_MODE_4X, 128, CS4271_MODE1_DIV_1},
333 {0, CS4271_MODE1_MODE_4X, 192, CS4271_MODE1_DIV_2},
334 {0, CS4271_MODE1_MODE_4X, 256, CS4271_MODE1_DIV_2},
335};
336
337#define CS4271_NR_RATIOS ARRAY_SIZE(cs4271_clk_tab)
338
339static int cs4271_hw_params(struct snd_pcm_substream *substream,
340 struct snd_pcm_hw_params *params,
341 struct snd_soc_dai *dai)
342{
343 struct snd_soc_component *component = dai->component;
344 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
345 int i, ret;
346 unsigned int ratio, val;
347
348 if (cs4271->enable_soft_reset) {
349
350
351
352
353
354
355
356
357
358 if ((substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
359 !snd_soc_dai_stream_active(dai, SNDRV_PCM_STREAM_CAPTURE)) ||
360 (substream->stream == SNDRV_PCM_STREAM_CAPTURE &&
361 !snd_soc_dai_stream_active(dai, SNDRV_PCM_STREAM_PLAYBACK))) {
362 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
363 CS4271_MODE2_PDN,
364 CS4271_MODE2_PDN);
365 if (ret < 0)
366 return ret;
367
368 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
369 CS4271_MODE2_PDN, 0);
370 if (ret < 0)
371 return ret;
372 }
373 }
374
375 cs4271->rate = params_rate(params);
376
377
378 if (cs4271->rate < 50000)
379 val = CS4271_MODE1_MODE_1X;
380 else if (cs4271->rate < 100000)
381 val = CS4271_MODE1_MODE_2X;
382 else
383 val = CS4271_MODE1_MODE_4X;
384
385 ratio = cs4271->mclk / cs4271->rate;
386 for (i = 0; i < CS4271_NR_RATIOS; i++)
387 if ((cs4271_clk_tab[i].master == cs4271->master) &&
388 (cs4271_clk_tab[i].speed_mode == val) &&
389 (cs4271_clk_tab[i].ratio == ratio))
390 break;
391
392 if (i == CS4271_NR_RATIOS) {
393 dev_err(component->dev, "Invalid sample rate\n");
394 return -EINVAL;
395 }
396
397 val |= cs4271_clk_tab[i].ratio_mask;
398
399 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE1,
400 CS4271_MODE1_MODE_MASK | CS4271_MODE1_DIV_MASK, val);
401 if (ret < 0)
402 return ret;
403
404 return cs4271_set_deemph(component);
405}
406
407static int cs4271_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
408{
409 struct snd_soc_component *component = dai->component;
410 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
411 int ret;
412 int val_a = 0;
413 int val_b = 0;
414
415 if (stream != SNDRV_PCM_STREAM_PLAYBACK)
416 return 0;
417
418 if (mute) {
419 val_a = CS4271_VOLA_MUTE;
420 val_b = CS4271_VOLB_MUTE;
421 }
422
423 ret = regmap_update_bits(cs4271->regmap, CS4271_VOLA,
424 CS4271_VOLA_MUTE, val_a);
425 if (ret < 0)
426 return ret;
427
428 ret = regmap_update_bits(cs4271->regmap, CS4271_VOLB,
429 CS4271_VOLB_MUTE, val_b);
430 if (ret < 0)
431 return ret;
432
433 return 0;
434}
435
436
437static DECLARE_TLV_DB_SCALE(cs4271_dac_tlv, -12700, 100, 0);
438
439static const struct snd_kcontrol_new cs4271_snd_controls[] = {
440 SOC_DOUBLE_R_TLV("Master Playback Volume", CS4271_VOLA, CS4271_VOLB,
441 0, 0x7F, 1, cs4271_dac_tlv),
442 SOC_SINGLE("Digital Loopback Switch", CS4271_MODE2, 4, 1, 0),
443 SOC_SINGLE("Soft Ramp Switch", CS4271_DACVOL, 5, 1, 0),
444 SOC_SINGLE("Zero Cross Switch", CS4271_DACVOL, 4, 1, 0),
445 SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
446 cs4271_get_deemph, cs4271_put_deemph),
447 SOC_SINGLE("Auto-Mute Switch", CS4271_DACCTL, 7, 1, 0),
448 SOC_SINGLE("Slow Roll Off Filter Switch", CS4271_DACCTL, 6, 1, 0),
449 SOC_SINGLE("Soft Volume Ramp-Up Switch", CS4271_DACCTL, 3, 1, 0),
450 SOC_SINGLE("Soft Ramp-Down Switch", CS4271_DACCTL, 2, 1, 0),
451 SOC_SINGLE("Left Channel Inversion Switch", CS4271_DACCTL, 1, 1, 0),
452 SOC_SINGLE("Right Channel Inversion Switch", CS4271_DACCTL, 0, 1, 0),
453 SOC_DOUBLE("Master Capture Switch", CS4271_ADCCTL, 3, 2, 1, 1),
454 SOC_SINGLE("Dither 16-Bit Data Switch", CS4271_ADCCTL, 5, 1, 0),
455 SOC_DOUBLE("High Pass Filter Switch", CS4271_ADCCTL, 1, 0, 1, 1),
456 SOC_DOUBLE_R("Master Playback Switch", CS4271_VOLA, CS4271_VOLB,
457 7, 1, 1),
458};
459
460static const struct snd_soc_dai_ops cs4271_dai_ops = {
461 .hw_params = cs4271_hw_params,
462 .set_sysclk = cs4271_set_dai_sysclk,
463 .set_fmt = cs4271_set_dai_fmt,
464 .mute_stream = cs4271_mute_stream,
465};
466
467static struct snd_soc_dai_driver cs4271_dai = {
468 .name = "cs4271-hifi",
469 .playback = {
470 .stream_name = "Playback",
471 .channels_min = 2,
472 .channels_max = 2,
473 .rates = CS4271_PCM_RATES,
474 .formats = CS4271_PCM_FORMATS,
475 },
476 .capture = {
477 .stream_name = "Capture",
478 .channels_min = 2,
479 .channels_max = 2,
480 .rates = CS4271_PCM_RATES,
481 .formats = CS4271_PCM_FORMATS,
482 },
483 .ops = &cs4271_dai_ops,
484 .symmetric_rate = 1,
485};
486
487static int cs4271_reset(struct snd_soc_component *component)
488{
489 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
490
491 if (gpio_is_valid(cs4271->gpio_nreset)) {
492 gpio_direction_output(cs4271->gpio_nreset, 0);
493 mdelay(1);
494 gpio_set_value(cs4271->gpio_nreset, 1);
495 mdelay(1);
496 }
497
498 return 0;
499}
500
501#ifdef CONFIG_PM
502static int cs4271_soc_suspend(struct snd_soc_component *component)
503{
504 int ret;
505 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
506
507
508 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
509 CS4271_MODE2_PDN, CS4271_MODE2_PDN);
510 if (ret < 0)
511 return ret;
512
513 regcache_mark_dirty(cs4271->regmap);
514 regulator_bulk_disable(ARRAY_SIZE(cs4271->supplies), cs4271->supplies);
515
516 return 0;
517}
518
519static int cs4271_soc_resume(struct snd_soc_component *component)
520{
521 int ret;
522 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
523
524 ret = regulator_bulk_enable(ARRAY_SIZE(cs4271->supplies),
525 cs4271->supplies);
526 if (ret < 0) {
527 dev_err(component->dev, "Failed to enable regulators: %d\n", ret);
528 return ret;
529 }
530
531
532 cs4271_reset(component);
533
534
535 ret = regcache_sync(cs4271->regmap);
536 if (ret < 0)
537 return ret;
538
539
540 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
541 CS4271_MODE2_PDN, 0);
542 if (ret < 0)
543 return ret;
544
545 return 0;
546}
547#else
548#define cs4271_soc_suspend NULL
549#define cs4271_soc_resume NULL
550#endif
551
552#ifdef CONFIG_OF
553const struct of_device_id cs4271_dt_ids[] = {
554 { .compatible = "cirrus,cs4271", },
555 { }
556};
557MODULE_DEVICE_TABLE(of, cs4271_dt_ids);
558EXPORT_SYMBOL_GPL(cs4271_dt_ids);
559#endif
560
561static int cs4271_component_probe(struct snd_soc_component *component)
562{
563 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
564 struct cs4271_platform_data *cs4271plat = component->dev->platform_data;
565 int ret;
566 bool amutec_eq_bmutec = false;
567
568#ifdef CONFIG_OF
569 if (of_match_device(cs4271_dt_ids, component->dev)) {
570 if (of_get_property(component->dev->of_node,
571 "cirrus,amutec-eq-bmutec", NULL))
572 amutec_eq_bmutec = true;
573
574 if (of_get_property(component->dev->of_node,
575 "cirrus,enable-soft-reset", NULL))
576 cs4271->enable_soft_reset = true;
577 }
578#endif
579
580 ret = regulator_bulk_enable(ARRAY_SIZE(cs4271->supplies),
581 cs4271->supplies);
582 if (ret < 0) {
583 dev_err(component->dev, "Failed to enable regulators: %d\n", ret);
584 return ret;
585 }
586
587 if (cs4271plat) {
588 amutec_eq_bmutec = cs4271plat->amutec_eq_bmutec;
589 cs4271->enable_soft_reset = cs4271plat->enable_soft_reset;
590 }
591
592
593 cs4271_reset(component);
594
595 ret = regcache_sync(cs4271->regmap);
596 if (ret < 0)
597 return ret;
598
599 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
600 CS4271_MODE2_PDN | CS4271_MODE2_CPEN,
601 CS4271_MODE2_PDN | CS4271_MODE2_CPEN);
602 if (ret < 0)
603 return ret;
604 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
605 CS4271_MODE2_PDN, 0);
606 if (ret < 0)
607 return ret;
608
609 udelay(85);
610
611 if (amutec_eq_bmutec)
612 regmap_update_bits(cs4271->regmap, CS4271_MODE2,
613 CS4271_MODE2_MUTECAEQUB,
614 CS4271_MODE2_MUTECAEQUB);
615
616 return 0;
617}
618
619static void cs4271_component_remove(struct snd_soc_component *component)
620{
621 struct cs4271_private *cs4271 = snd_soc_component_get_drvdata(component);
622
623 if (gpio_is_valid(cs4271->gpio_nreset))
624
625 gpio_set_value(cs4271->gpio_nreset, 0);
626
627 regcache_mark_dirty(cs4271->regmap);
628 regulator_bulk_disable(ARRAY_SIZE(cs4271->supplies), cs4271->supplies);
629};
630
631static const struct snd_soc_component_driver soc_component_dev_cs4271 = {
632 .probe = cs4271_component_probe,
633 .remove = cs4271_component_remove,
634 .suspend = cs4271_soc_suspend,
635 .resume = cs4271_soc_resume,
636 .controls = cs4271_snd_controls,
637 .num_controls = ARRAY_SIZE(cs4271_snd_controls),
638 .dapm_widgets = cs4271_dapm_widgets,
639 .num_dapm_widgets = ARRAY_SIZE(cs4271_dapm_widgets),
640 .dapm_routes = cs4271_dapm_routes,
641 .num_dapm_routes = ARRAY_SIZE(cs4271_dapm_routes),
642 .idle_bias_on = 1,
643 .use_pmdown_time = 1,
644 .endianness = 1,
645 .non_legacy_dai_naming = 1,
646};
647
648static int cs4271_common_probe(struct device *dev,
649 struct cs4271_private **c)
650{
651 struct cs4271_platform_data *cs4271plat = dev->platform_data;
652 struct cs4271_private *cs4271;
653 int i, ret;
654
655 cs4271 = devm_kzalloc(dev, sizeof(*cs4271), GFP_KERNEL);
656 if (!cs4271)
657 return -ENOMEM;
658
659 if (of_match_device(cs4271_dt_ids, dev))
660 cs4271->gpio_nreset =
661 of_get_named_gpio(dev->of_node, "reset-gpio", 0);
662
663 if (cs4271plat)
664 cs4271->gpio_nreset = cs4271plat->gpio_nreset;
665
666 if (gpio_is_valid(cs4271->gpio_nreset)) {
667 ret = devm_gpio_request(dev, cs4271->gpio_nreset,
668 "CS4271 Reset");
669 if (ret < 0)
670 return ret;
671 }
672
673 for (i = 0; i < ARRAY_SIZE(supply_names); i++)
674 cs4271->supplies[i].supply = supply_names[i];
675
676 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(cs4271->supplies),
677 cs4271->supplies);
678
679 if (ret < 0) {
680 dev_err(dev, "Failed to get regulators: %d\n", ret);
681 return ret;
682 }
683
684 *c = cs4271;
685 return 0;
686}
687
688const struct regmap_config cs4271_regmap_config = {
689 .max_register = CS4271_LASTREG,
690
691 .reg_defaults = cs4271_reg_defaults,
692 .num_reg_defaults = ARRAY_SIZE(cs4271_reg_defaults),
693 .cache_type = REGCACHE_RBTREE,
694
695 .volatile_reg = cs4271_volatile_reg,
696};
697EXPORT_SYMBOL_GPL(cs4271_regmap_config);
698
699int cs4271_probe(struct device *dev, struct regmap *regmap)
700{
701 struct cs4271_private *cs4271;
702 int ret;
703
704 if (IS_ERR(regmap))
705 return PTR_ERR(regmap);
706
707 ret = cs4271_common_probe(dev, &cs4271);
708 if (ret < 0)
709 return ret;
710
711 dev_set_drvdata(dev, cs4271);
712 cs4271->regmap = regmap;
713
714 return devm_snd_soc_register_component(dev, &soc_component_dev_cs4271,
715 &cs4271_dai, 1);
716}
717EXPORT_SYMBOL_GPL(cs4271_probe);
718
719MODULE_AUTHOR("Alexander Sverdlin <subaparts@yandex.ru>");
720MODULE_DESCRIPTION("Cirrus Logic CS4271 ALSA SoC Codec Driver");
721MODULE_LICENSE("GPL");
722
