1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Driver for ADAU1701 SigmaDSP processor
4 *
5 * Copyright 2011 Analog Devices Inc.
6 * Author: Lars-Peter Clausen <lars@metafoo.de>
7 * based on an inital version by Cliff Cai <cliff.cai@analog.com>
8 */
9
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/i2c.h>
13#include <linux/delay.h>
14#include <linux/slab.h>
15#include <linux/of.h>
16#include <linux/gpio/consumer.h>
17#include <linux/regulator/consumer.h>
18#include <linux/regmap.h>
19#include <sound/core.h>
20#include <sound/pcm.h>
21#include <sound/pcm_params.h>
22#include <sound/soc.h>
23
24#include <asm/unaligned.h>
25
26#include "sigmadsp.h"
27#include "adau1701.h"
28
29#define ADAU1701_SAFELOAD_DATA(i) (0x0810 + (i))
30#define ADAU1701_SAFELOAD_ADDR(i) (0x0815 + (i))
31
32#define ADAU1701_DSPCTRL 0x081c
33#define ADAU1701_SEROCTL 0x081e
34#define ADAU1701_SERICTL 0x081f
35
36#define ADAU1701_AUXNPOW 0x0822
37#define ADAU1701_PINCONF_0 0x0820
38#define ADAU1701_PINCONF_1 0x0821
39#define ADAU1701_AUXNPOW 0x0822
40
41#define ADAU1701_OSCIPOW 0x0826
42#define ADAU1701_DACSET 0x0827
43
44#define ADAU1701_MAX_REGISTER 0x0828
45
46#define ADAU1701_DSPCTRL_CR (1 << 2)
47#define ADAU1701_DSPCTRL_DAM (1 << 3)
48#define ADAU1701_DSPCTRL_ADM (1 << 4)
49#define ADAU1701_DSPCTRL_IST (1 << 5)
50#define ADAU1701_DSPCTRL_SR_48 0x00
51#define ADAU1701_DSPCTRL_SR_96 0x01
52#define ADAU1701_DSPCTRL_SR_192 0x02
53#define ADAU1701_DSPCTRL_SR_MASK 0x03
54
55#define ADAU1701_SEROCTL_INV_LRCLK 0x2000
56#define ADAU1701_SEROCTL_INV_BCLK 0x1000
57#define ADAU1701_SEROCTL_MASTER 0x0800
58
59#define ADAU1701_SEROCTL_OBF16 0x0000
60#define ADAU1701_SEROCTL_OBF8 0x0200
61#define ADAU1701_SEROCTL_OBF4 0x0400
62#define ADAU1701_SEROCTL_OBF2 0x0600
63#define ADAU1701_SEROCTL_OBF_MASK 0x0600
64
65#define ADAU1701_SEROCTL_OLF1024 0x0000
66#define ADAU1701_SEROCTL_OLF512 0x0080
67#define ADAU1701_SEROCTL_OLF256 0x0100
68#define ADAU1701_SEROCTL_OLF_MASK 0x0180
69
70#define ADAU1701_SEROCTL_MSB_DEALY1 0x0000
71#define ADAU1701_SEROCTL_MSB_DEALY0 0x0004
72#define ADAU1701_SEROCTL_MSB_DEALY8 0x0008
73#define ADAU1701_SEROCTL_MSB_DEALY12 0x000c
74#define ADAU1701_SEROCTL_MSB_DEALY16 0x0010
75#define ADAU1701_SEROCTL_MSB_DEALY_MASK 0x001c
76
77#define ADAU1701_SEROCTL_WORD_LEN_24 0x0000
78#define ADAU1701_SEROCTL_WORD_LEN_20 0x0001
79#define ADAU1701_SEROCTL_WORD_LEN_16 0x0002
80#define ADAU1701_SEROCTL_WORD_LEN_MASK 0x0003
81
82#define ADAU1701_AUXNPOW_VBPD 0x40
83#define ADAU1701_AUXNPOW_VRPD 0x20
84
85#define ADAU1701_SERICTL_I2S 0
86#define ADAU1701_SERICTL_LEFTJ 1
87#define ADAU1701_SERICTL_TDM 2
88#define ADAU1701_SERICTL_RIGHTJ_24 3
89#define ADAU1701_SERICTL_RIGHTJ_20 4
90#define ADAU1701_SERICTL_RIGHTJ_18 5
91#define ADAU1701_SERICTL_RIGHTJ_16 6
92#define ADAU1701_SERICTL_MODE_MASK 7
93#define ADAU1701_SERICTL_INV_BCLK BIT(3)
94#define ADAU1701_SERICTL_INV_LRCLK BIT(4)
95
96#define ADAU1701_OSCIPOW_OPD 0x04
97#define ADAU1701_DACSET_DACINIT 1
98
99#define ADAU1707_CLKDIV_UNSET (-1U)
100
101#define ADAU1701_FIRMWARE "adau1701.bin"
102
103static const char * const supply_names[] = {
104 "dvdd", "avdd"
105};
106
107struct adau1701 {
108 struct gpio_desc *gpio_nreset;
109 struct gpio_descs *gpio_pll_mode;
110 unsigned int dai_fmt;
111 unsigned int pll_clkdiv;
112 unsigned int sysclk;
113 struct regmap *regmap;
114 struct i2c_client *client;
115 u8 pin_config[12];
116
117 struct sigmadsp *sigmadsp;
118 struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
119};
120
121static const struct snd_kcontrol_new adau1701_controls[] = {
122 SOC_SINGLE("Master Capture Switch", ADAU1701_DSPCTRL, 4, 1, 0),
123};
124
125static const struct snd_soc_dapm_widget adau1701_dapm_widgets[] = {
126 SND_SOC_DAPM_DAC("DAC0", "Playback", ADAU1701_AUXNPOW, 3, 1),
127 SND_SOC_DAPM_DAC("DAC1", "Playback", ADAU1701_AUXNPOW, 2, 1),
128 SND_SOC_DAPM_DAC("DAC2", "Playback", ADAU1701_AUXNPOW, 1, 1),
129 SND_SOC_DAPM_DAC("DAC3", "Playback", ADAU1701_AUXNPOW, 0, 1),
130 SND_SOC_DAPM_ADC("ADC", "Capture", ADAU1701_AUXNPOW, 7, 1),
131
132 SND_SOC_DAPM_OUTPUT("OUT0"),
133 SND_SOC_DAPM_OUTPUT("OUT1"),
134 SND_SOC_DAPM_OUTPUT("OUT2"),
135 SND_SOC_DAPM_OUTPUT("OUT3"),
136 SND_SOC_DAPM_INPUT("IN0"),
137 SND_SOC_DAPM_INPUT("IN1"),
138};
139
140static const struct snd_soc_dapm_route adau1701_dapm_routes[] = {
141 { "OUT0", NULL, "DAC0" },
142 { "OUT1", NULL, "DAC1" },
143 { "OUT2", NULL, "DAC2" },
144 { "OUT3", NULL, "DAC3" },
145
146 { "ADC", NULL, "IN0" },
147 { "ADC", NULL, "IN1" },
148};
149
150static unsigned int adau1701_register_size(struct device *dev,
151 unsigned int reg)
152{
153 switch (reg) {
154 case ADAU1701_PINCONF_0:
155 case ADAU1701_PINCONF_1:
156 return 3;
157 case ADAU1701_DSPCTRL:
158 case ADAU1701_SEROCTL:
159 case ADAU1701_AUXNPOW:
160 case ADAU1701_OSCIPOW:
161 case ADAU1701_DACSET:
162 return 2;
163 case ADAU1701_SERICTL:
164 return 1;
165 }
166
167 dev_err(dev, "Unsupported register address: %d\n", reg);
168 return 0;
169}
170
171static bool adau1701_volatile_reg(struct device *dev, unsigned int reg)
172{
173 switch (reg) {
174 case ADAU1701_DACSET:
175 case ADAU1701_DSPCTRL:
176 return true;
177 default:
178 return false;
179 }
180}
181
182static int adau1701_reg_write(void *context, unsigned int reg,
183 unsigned int value)
184{
185 struct i2c_client *client = context;
186 unsigned int i;
187 unsigned int size;
188 uint8_t buf[5];
189 int ret;
190
191 size = adau1701_register_size(dev: &client->dev, reg);
192 if (size == 0)
193 return -EINVAL;
194
195 buf[0] = reg >> 8;
196 buf[1] = reg & 0xff;
197
198 for (i = size + 1; i >= 2; --i) {
199 buf[i] = value;
200 value >>= 8;
201 }
202
203 ret = i2c_master_send(client, buf, count: size + 2);
204 if (ret == size + 2)
205 return 0;
206 else if (ret < 0)
207 return ret;
208 else
209 return -EIO;
210}
211
212static int adau1701_reg_read(void *context, unsigned int reg,
213 unsigned int *value)
214{
215 int ret;
216 unsigned int i;
217 unsigned int size;
218 uint8_t send_buf[2], recv_buf[3];
219 struct i2c_client *client = context;
220 struct i2c_msg msgs[2];
221
222 size = adau1701_register_size(dev: &client->dev, reg);
223 if (size == 0)
224 return -EINVAL;
225
226 send_buf[0] = reg >> 8;
227 send_buf[1] = reg & 0xff;
228
229 msgs[0].addr = client->addr;
230 msgs[0].len = sizeof(send_buf);
231 msgs[0].buf = send_buf;
232 msgs[0].flags = 0;
233
234 msgs[1].addr = client->addr;
235 msgs[1].len = size;
236 msgs[1].buf = recv_buf;
237 msgs[1].flags = I2C_M_RD;
238
239 ret = i2c_transfer(adap: client->adapter, msgs, ARRAY_SIZE(msgs));
240 if (ret < 0)
241 return ret;
242 else if (ret != ARRAY_SIZE(msgs))
243 return -EIO;
244
245 *value = 0;
246
247 for (i = 0; i < size; i++) {
248 *value <<= 8;
249 *value |= recv_buf[i];
250 }
251
252 return 0;
253}
254
255static int adau1701_safeload(struct sigmadsp *sigmadsp, unsigned int addr,
256 const uint8_t bytes[], size_t len)
257{
258 struct i2c_client *client = to_i2c_client(sigmadsp->dev);
259 struct adau1701 *adau1701 = i2c_get_clientdata(client);
260 unsigned int val;
261 unsigned int i;
262 uint8_t buf[10];
263 int ret;
264
265 ret = regmap_read(map: adau1701->regmap, ADAU1701_DSPCTRL, val: &val);
266 if (ret)
267 return ret;
268
269 if (val & ADAU1701_DSPCTRL_IST)
270 msleep(msecs: 50);
271
272 for (i = 0; i < len / 4; i++) {
273 put_unaligned_le16(ADAU1701_SAFELOAD_DATA(i), p: buf);
274 buf[2] = 0x00;
275 memcpy(buf + 3, bytes + i * 4, 4);
276 ret = i2c_master_send(client, buf, count: 7);
277 if (ret < 0)
278 return ret;
279 else if (ret != 7)
280 return -EIO;
281
282 put_unaligned_le16(ADAU1701_SAFELOAD_ADDR(i), p: buf);
283 put_unaligned_le16(val: addr + i, p: buf + 2);
284 ret = i2c_master_send(client, buf, count: 4);
285 if (ret < 0)
286 return ret;
287 else if (ret != 4)
288 return -EIO;
289 }
290
291 return regmap_update_bits(map: adau1701->regmap, ADAU1701_DSPCTRL,
292 ADAU1701_DSPCTRL_IST, ADAU1701_DSPCTRL_IST);
293}
294
295static const struct sigmadsp_ops adau1701_sigmadsp_ops = {
296 .safeload = adau1701_safeload,
297};
298
299static int adau1701_reset(struct snd_soc_component *component, unsigned int clkdiv,
300 unsigned int rate)
301{
302 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
303 int ret;
304
305 DECLARE_BITMAP(values, 2);
306 sigmadsp_reset(sigmadsp: adau1701->sigmadsp);
307
308 if (clkdiv != ADAU1707_CLKDIV_UNSET && adau1701->gpio_pll_mode) {
309 switch (clkdiv) {
310 case 64:
311 __assign_bit(nr: 0, addr: values, value: 0);
312 __assign_bit(nr: 1, addr: values, value: 0);
313 break;
314 case 256:
315 __assign_bit(nr: 0, addr: values, value: 0);
316 __assign_bit(nr: 1, addr: values, value: 1);
317 break;
318 case 384:
319 __assign_bit(nr: 0, addr: values, value: 1);
320 __assign_bit(nr: 1, addr: values, value: 0);
321 break;
322 case 0: /* fallback */
323 case 512:
324 __assign_bit(nr: 0, addr: values, value: 1);
325 __assign_bit(nr: 1, addr: values, value: 1);
326 break;
327 }
328 gpiod_set_array_value_cansleep(array_size: adau1701->gpio_pll_mode->ndescs,
329 desc_array: adau1701->gpio_pll_mode->desc, array_info: adau1701->gpio_pll_mode->info,
330 value_bitmap: values);
331 }
332
333 adau1701->pll_clkdiv = clkdiv;
334
335 if (adau1701->gpio_nreset) {
336 gpiod_set_value_cansleep(desc: adau1701->gpio_nreset, value: 0);
337 /* minimum reset time is 20ns */
338 udelay(1);
339 gpiod_set_value_cansleep(desc: adau1701->gpio_nreset, value: 1);
340 /* power-up time may be as long as 85ms */
341 mdelay(85);
342 }
343
344 /*
345 * Postpone the firmware download to a point in time when we
346 * know the correct PLL setup
347 */
348 if (clkdiv != ADAU1707_CLKDIV_UNSET) {
349 ret = sigmadsp_setup(sigmadsp: adau1701->sigmadsp, samplerate: rate);
350 if (ret) {
351 dev_warn(component->dev, "Failed to load firmware\n");
352 return ret;
353 }
354 }
355
356 regmap_write(map: adau1701->regmap, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT);
357 regmap_write(map: adau1701->regmap, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR);
358
359 regcache_mark_dirty(map: adau1701->regmap);
360 regcache_sync(map: adau1701->regmap);
361
362 return 0;
363}
364
365static int adau1701_set_capture_pcm_format(struct snd_soc_component *component,
366 struct snd_pcm_hw_params *params)
367{
368 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
369 unsigned int mask = ADAU1701_SEROCTL_WORD_LEN_MASK;
370 unsigned int val;
371
372 switch (params_width(p: params)) {
373 case 16:
374 val = ADAU1701_SEROCTL_WORD_LEN_16;
375 break;
376 case 20:
377 val = ADAU1701_SEROCTL_WORD_LEN_20;
378 break;
379 case 24:
380 val = ADAU1701_SEROCTL_WORD_LEN_24;
381 break;
382 default:
383 return -EINVAL;
384 }
385
386 if (adau1701->dai_fmt == SND_SOC_DAIFMT_RIGHT_J) {
387 switch (params_width(p: params)) {
388 case 16:
389 val |= ADAU1701_SEROCTL_MSB_DEALY16;
390 break;
391 case 20:
392 val |= ADAU1701_SEROCTL_MSB_DEALY12;
393 break;
394 case 24:
395 val |= ADAU1701_SEROCTL_MSB_DEALY8;
396 break;
397 }
398 mask |= ADAU1701_SEROCTL_MSB_DEALY_MASK;
399 }
400
401 regmap_update_bits(map: adau1701->regmap, ADAU1701_SEROCTL, mask, val);
402
403 return 0;
404}
405
406static int adau1701_set_playback_pcm_format(struct snd_soc_component *component,
407 struct snd_pcm_hw_params *params)
408{
409 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
410 unsigned int val;
411
412 if (adau1701->dai_fmt != SND_SOC_DAIFMT_RIGHT_J)
413 return 0;
414
415 switch (params_width(p: params)) {
416 case 16:
417 val = ADAU1701_SERICTL_RIGHTJ_16;
418 break;
419 case 20:
420 val = ADAU1701_SERICTL_RIGHTJ_20;
421 break;
422 case 24:
423 val = ADAU1701_SERICTL_RIGHTJ_24;
424 break;
425 default:
426 return -EINVAL;
427 }
428
429 regmap_update_bits(map: adau1701->regmap, ADAU1701_SERICTL,
430 ADAU1701_SERICTL_MODE_MASK, val);
431
432 return 0;
433}
434
435static int adau1701_hw_params(struct snd_pcm_substream *substream,
436 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
437{
438 struct snd_soc_component *component = dai->component;
439 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
440 unsigned int clkdiv = adau1701->sysclk / params_rate(p: params);
441 unsigned int val;
442 int ret;
443
444 /*
445 * If the mclk/lrclk ratio changes, the chip needs updated PLL
446 * mode GPIO settings, and a full reset cycle, including a new
447 * firmware upload.
448 */
449 if (clkdiv != adau1701->pll_clkdiv) {
450 ret = adau1701_reset(component, clkdiv, rate: params_rate(p: params));
451 if (ret < 0)
452 return ret;
453 }
454
455 switch (params_rate(p: params)) {
456 case 192000:
457 val = ADAU1701_DSPCTRL_SR_192;
458 break;
459 case 96000:
460 val = ADAU1701_DSPCTRL_SR_96;
461 break;
462 case 48000:
463 val = ADAU1701_DSPCTRL_SR_48;
464 break;
465 default:
466 return -EINVAL;
467 }
468
469 regmap_update_bits(map: adau1701->regmap, ADAU1701_DSPCTRL,
470 ADAU1701_DSPCTRL_SR_MASK, val);
471
472 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
473 return adau1701_set_playback_pcm_format(component, params);
474 else
475 return adau1701_set_capture_pcm_format(component, params);
476}
477
478static int adau1701_set_dai_fmt(struct snd_soc_dai *codec_dai,
479 unsigned int fmt)
480{
481 struct snd_soc_component *component = codec_dai->component;
482 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
483 unsigned int serictl = 0x00, seroctl = 0x00;
484 bool invert_lrclk;
485
486 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
487 case SND_SOC_DAIFMT_CBP_CFP:
488 /* master, 64-bits per sample, 1 frame per sample */
489 seroctl |= ADAU1701_SEROCTL_MASTER | ADAU1701_SEROCTL_OBF16
490 | ADAU1701_SEROCTL_OLF1024;
491 break;
492 case SND_SOC_DAIFMT_CBC_CFC:
493 break;
494 default:
495 return -EINVAL;
496 }
497
498 /* clock inversion */
499 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
500 case SND_SOC_DAIFMT_NB_NF:
501 invert_lrclk = false;
502 break;
503 case SND_SOC_DAIFMT_NB_IF:
504 invert_lrclk = true;
505 break;
506 case SND_SOC_DAIFMT_IB_NF:
507 invert_lrclk = false;
508 serictl |= ADAU1701_SERICTL_INV_BCLK;
509 seroctl |= ADAU1701_SEROCTL_INV_BCLK;
510 break;
511 case SND_SOC_DAIFMT_IB_IF:
512 invert_lrclk = true;
513 serictl |= ADAU1701_SERICTL_INV_BCLK;
514 seroctl |= ADAU1701_SEROCTL_INV_BCLK;
515 break;
516 default:
517 return -EINVAL;
518 }
519
520 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
521 case SND_SOC_DAIFMT_I2S:
522 break;
523 case SND_SOC_DAIFMT_LEFT_J:
524 serictl |= ADAU1701_SERICTL_LEFTJ;
525 seroctl |= ADAU1701_SEROCTL_MSB_DEALY0;
526 invert_lrclk = !invert_lrclk;
527 break;
528 case SND_SOC_DAIFMT_RIGHT_J:
529 serictl |= ADAU1701_SERICTL_RIGHTJ_24;
530 seroctl |= ADAU1701_SEROCTL_MSB_DEALY8;
531 invert_lrclk = !invert_lrclk;
532 break;
533 default:
534 return -EINVAL;
535 }
536
537 if (invert_lrclk) {
538 seroctl |= ADAU1701_SEROCTL_INV_LRCLK;
539 serictl |= ADAU1701_SERICTL_INV_LRCLK;
540 }
541
542 adau1701->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
543
544 regmap_write(map: adau1701->regmap, ADAU1701_SERICTL, val: serictl);
545 regmap_update_bits(map: adau1701->regmap, ADAU1701_SEROCTL,
546 mask: ~ADAU1701_SEROCTL_WORD_LEN_MASK, val: seroctl);
547
548 return 0;
549}
550
551static int adau1701_set_bias_level(struct snd_soc_component *component,
552 enum snd_soc_bias_level level)
553{
554 unsigned int mask = ADAU1701_AUXNPOW_VBPD | ADAU1701_AUXNPOW_VRPD;
555 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
556
557 switch (level) {
558 case SND_SOC_BIAS_ON:
559 break;
560 case SND_SOC_BIAS_PREPARE:
561 break;
562 case SND_SOC_BIAS_STANDBY:
563 /* Enable VREF and VREF buffer */
564 regmap_update_bits(map: adau1701->regmap,
565 ADAU1701_AUXNPOW, mask, val: 0x00);
566 break;
567 case SND_SOC_BIAS_OFF:
568 /* Disable VREF and VREF buffer */
569 regmap_update_bits(map: adau1701->regmap,
570 ADAU1701_AUXNPOW, mask, val: mask);
571 break;
572 }
573
574 return 0;
575}
576
577static int adau1701_mute_stream(struct snd_soc_dai *dai, int mute, int direction)
578{
579 struct snd_soc_component *component = dai->component;
580 unsigned int mask = ADAU1701_DSPCTRL_DAM;
581 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
582 unsigned int val;
583
584 if (mute)
585 val = 0;
586 else
587 val = mask;
588
589 regmap_update_bits(map: adau1701->regmap, ADAU1701_DSPCTRL, mask, val);
590
591 return 0;
592}
593
594static int adau1701_set_sysclk(struct snd_soc_component *component, int clk_id,
595 int source, unsigned int freq, int dir)
596{
597 unsigned int val;
598 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
599
600 switch (clk_id) {
601 case ADAU1701_CLK_SRC_OSC:
602 val = 0x0;
603 break;
604 case ADAU1701_CLK_SRC_MCLK:
605 val = ADAU1701_OSCIPOW_OPD;
606 break;
607 default:
608 return -EINVAL;
609 }
610
611 regmap_update_bits(map: adau1701->regmap, ADAU1701_OSCIPOW,
612 ADAU1701_OSCIPOW_OPD, val);
613 adau1701->sysclk = freq;
614
615 return 0;
616}
617
618static int adau1701_startup(struct snd_pcm_substream *substream,
619 struct snd_soc_dai *dai)
620{
621 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: dai->component);
622
623 return sigmadsp_restrict_params(sigmadsp: adau1701->sigmadsp, substream);
624}
625
626#define ADAU1701_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \
627 SNDRV_PCM_RATE_192000)
628
629#define ADAU1701_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
630 SNDRV_PCM_FMTBIT_S24_LE)
631
632static const struct snd_soc_dai_ops adau1701_dai_ops = {
633 .set_fmt = adau1701_set_dai_fmt,
634 .hw_params = adau1701_hw_params,
635 .mute_stream = adau1701_mute_stream,
636 .startup = adau1701_startup,
637 .no_capture_mute = 1,
638};
639
640static struct snd_soc_dai_driver adau1701_dai = {
641 .name = "adau1701",
642 .playback = {
643 .stream_name = "Playback",
644 .channels_min = 2,
645 .channels_max = 8,
646 .rates = ADAU1701_RATES,
647 .formats = ADAU1701_FORMATS,
648 },
649 .capture = {
650 .stream_name = "Capture",
651 .channels_min = 2,
652 .channels_max = 8,
653 .rates = ADAU1701_RATES,
654 .formats = ADAU1701_FORMATS,
655 },
656 .ops = &adau1701_dai_ops,
657 .symmetric_rate = 1,
658};
659
660#ifdef CONFIG_OF
661static const struct of_device_id adau1701_dt_ids[] = {
662 { .compatible = "adi,adau1701", },
663 { }
664};
665MODULE_DEVICE_TABLE(of, adau1701_dt_ids);
666#endif
667
668static int adau1701_probe(struct snd_soc_component *component)
669{
670 int i, ret;
671 unsigned int val;
672 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
673
674 ret = sigmadsp_attach(sigmadsp: adau1701->sigmadsp, component);
675 if (ret)
676 return ret;
677
678 ret = regulator_bulk_enable(ARRAY_SIZE(adau1701->supplies),
679 consumers: adau1701->supplies);
680 if (ret < 0) {
681 dev_err(component->dev, "Failed to enable regulators: %d\n", ret);
682 return ret;
683 }
684
685 /*
686 * Let the pll_clkdiv variable default to something that won't happen
687 * at runtime. That way, we can postpone the firmware download from
688 * adau1701_reset() to a point in time when we know the correct PLL
689 * mode parameters.
690 */
691 adau1701->pll_clkdiv = ADAU1707_CLKDIV_UNSET;
692
693 /* initalize with pre-configured pll mode settings */
694 ret = adau1701_reset(component, clkdiv: adau1701->pll_clkdiv, rate: 0);
695 if (ret < 0)
696 goto exit_regulators_disable;
697
698 /* set up pin config */
699 val = 0;
700 for (i = 0; i < 6; i++)
701 val |= adau1701->pin_config[i] << (i * 4);
702
703 regmap_write(map: adau1701->regmap, ADAU1701_PINCONF_0, val);
704
705 val = 0;
706 for (i = 0; i < 6; i++)
707 val |= adau1701->pin_config[i + 6] << (i * 4);
708
709 regmap_write(map: adau1701->regmap, ADAU1701_PINCONF_1, val);
710
711 return 0;
712
713exit_regulators_disable:
714
715 regulator_bulk_disable(ARRAY_SIZE(adau1701->supplies), consumers: adau1701->supplies);
716 return ret;
717}
718
719static void adau1701_remove(struct snd_soc_component *component)
720{
721 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
722
723 if (adau1701->gpio_nreset)
724 gpiod_set_value_cansleep(desc: adau1701->gpio_nreset, value: 0);
725
726 regulator_bulk_disable(ARRAY_SIZE(adau1701->supplies), consumers: adau1701->supplies);
727}
728
729#ifdef CONFIG_PM
730static int adau1701_suspend(struct snd_soc_component *component)
731{
732 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
733
734 regulator_bulk_disable(ARRAY_SIZE(adau1701->supplies),
735 consumers: adau1701->supplies);
736
737 return 0;
738}
739
740static int adau1701_resume(struct snd_soc_component *component)
741{
742 struct adau1701 *adau1701 = snd_soc_component_get_drvdata(c: component);
743 int ret;
744
745 ret = regulator_bulk_enable(ARRAY_SIZE(adau1701->supplies),
746 consumers: adau1701->supplies);
747 if (ret < 0) {
748 dev_err(component->dev, "Failed to enable regulators: %d\n", ret);
749 return ret;
750 }
751
752 return adau1701_reset(component, clkdiv: adau1701->pll_clkdiv, rate: 0);
753}
754#else
755#define adau1701_resume NULL
756#define adau1701_suspend NULL
757#endif /* CONFIG_PM */
758
759static const struct snd_soc_component_driver adau1701_component_drv = {
760 .probe = adau1701_probe,
761 .remove = adau1701_remove,
762 .resume = adau1701_resume,
763 .suspend = adau1701_suspend,
764 .set_bias_level = adau1701_set_bias_level,
765 .controls = adau1701_controls,
766 .num_controls = ARRAY_SIZE(adau1701_controls),
767 .dapm_widgets = adau1701_dapm_widgets,
768 .num_dapm_widgets = ARRAY_SIZE(adau1701_dapm_widgets),
769 .dapm_routes = adau1701_dapm_routes,
770 .num_dapm_routes = ARRAY_SIZE(adau1701_dapm_routes),
771 .set_sysclk = adau1701_set_sysclk,
772 .use_pmdown_time = 1,
773 .endianness = 1,
774};
775
776static const struct regmap_config adau1701_regmap = {
777 .reg_bits = 16,
778 .val_bits = 32,
779 .max_register = ADAU1701_MAX_REGISTER,
780 .cache_type = REGCACHE_MAPLE,
781 .volatile_reg = adau1701_volatile_reg,
782 .reg_write = adau1701_reg_write,
783 .reg_read = adau1701_reg_read,
784};
785
786static int adau1701_i2c_probe(struct i2c_client *client)
787{
788 struct adau1701 *adau1701;
789 struct device *dev = &client->dev;
790 int ret, i;
791
792 adau1701 = devm_kzalloc(dev, size: sizeof(*adau1701), GFP_KERNEL);
793 if (!adau1701)
794 return -ENOMEM;
795
796 for (i = 0; i < ARRAY_SIZE(supply_names); i++)
797 adau1701->supplies[i].supply = supply_names[i];
798
799 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(adau1701->supplies),
800 consumers: adau1701->supplies);
801 if (ret < 0) {
802 dev_err(dev, "Failed to get regulators: %d\n", ret);
803 return ret;
804 }
805
806 ret = regulator_bulk_enable(ARRAY_SIZE(adau1701->supplies),
807 consumers: adau1701->supplies);
808 if (ret < 0) {
809 dev_err(dev, "Failed to enable regulators: %d\n", ret);
810 return ret;
811 }
812
813 adau1701->client = client;
814 adau1701->regmap = devm_regmap_init(dev, NULL, client,
815 &adau1701_regmap);
816 if (IS_ERR(ptr: adau1701->regmap)) {
817 ret = PTR_ERR(ptr: adau1701->regmap);
818 goto exit_regulators_disable;
819 }
820
821
822 if (dev->of_node) {
823 of_property_read_u32(np: dev->of_node, propname: "adi,pll-clkdiv",
824 out_value: &adau1701->pll_clkdiv);
825
826 of_property_read_u8_array(np: dev->of_node, propname: "adi,pin-config",
827 out_values: adau1701->pin_config,
828 ARRAY_SIZE(adau1701->pin_config));
829 }
830
831 adau1701->gpio_nreset = devm_gpiod_get_optional(dev, con_id: "reset", flags: GPIOD_IN);
832
833 if (IS_ERR(ptr: adau1701->gpio_nreset)) {
834 ret = PTR_ERR(ptr: adau1701->gpio_nreset);
835 goto exit_regulators_disable;
836 }
837
838 adau1701->gpio_pll_mode = devm_gpiod_get_array_optional(dev, con_id: "adi,pll-mode", flags: GPIOD_OUT_LOW);
839
840 if (IS_ERR(ptr: adau1701->gpio_pll_mode)) {
841 ret = PTR_ERR(ptr: adau1701->gpio_pll_mode);
842 goto exit_regulators_disable;
843 }
844
845 i2c_set_clientdata(client, data: adau1701);
846
847 adau1701->sigmadsp = devm_sigmadsp_init_i2c(client,
848 ops: &adau1701_sigmadsp_ops, ADAU1701_FIRMWARE);
849 if (IS_ERR(ptr: adau1701->sigmadsp)) {
850 ret = PTR_ERR(ptr: adau1701->sigmadsp);
851 goto exit_regulators_disable;
852 }
853
854 ret = devm_snd_soc_register_component(dev: &client->dev,
855 component_driver: &adau1701_component_drv,
856 dai_drv: &adau1701_dai, num_dai: 1);
857
858exit_regulators_disable:
859
860 regulator_bulk_disable(ARRAY_SIZE(adau1701->supplies), consumers: adau1701->supplies);
861 return ret;
862}
863
864static const struct i2c_device_id adau1701_i2c_id[] = {
865 { "adau1401", 0 },
866 { "adau1401a", 0 },
867 { "adau1701", 0 },
868 { "adau1702", 0 },
869 { }
870};
871MODULE_DEVICE_TABLE(i2c, adau1701_i2c_id);
872
873static struct i2c_driver adau1701_i2c_driver = {
874 .driver = {
875 .name = "adau1701",
876 .of_match_table = of_match_ptr(adau1701_dt_ids),
877 },
878 .probe = adau1701_i2c_probe,
879 .id_table = adau1701_i2c_id,
880};
881
882module_i2c_driver(adau1701_i2c_driver);
883
884MODULE_DESCRIPTION("ASoC ADAU1701 SigmaDSP driver");
885MODULE_AUTHOR("Cliff Cai <cliff.cai@analog.com>");
886MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
887MODULE_LICENSE("GPL");
888

source code of linux/sound/soc/codecs/adau1701.c