?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
media: v4l: rcar_fdp1: Change platform dependency to ARCH_RENESAS
[linux/fpc-iii.git] / sound / soc / codecs / ak4613.c
blob8523ff9351cf59a61bcf48517fc7cc08484fdbec
1 /*
2 * ak4613.c -- Asahi Kasei ALSA Soc Audio driver
3 *
4 * Copyright (C) 2015 Renesas Electronics Corporation
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * Based on ak4642.c by Kuninori Morimoto
8 * Based on wm8731.c by Richard Purdie
9 * Based on ak4535.c by Richard Purdie
10 * Based on wm8753.c by Liam Girdwood
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 */
16
17 #include <linux/clk.h>
18 #include <linux/delay.h>
19 #include <linux/i2c.h>
20 #include <linux/slab.h>
21 #include <linux/of_device.h>
22 #include <linux/module.h>
23 #include <linux/regmap.h>
24 #include <sound/soc.h>
25 #include <sound/pcm_params.h>
26 #include <sound/tlv.h>
27
28 #define PW_MGMT1 0x00 /* Power Management 1 */
29 #define PW_MGMT2 0x01 /* Power Management 2 */
30 #define PW_MGMT3 0x02 /* Power Management 3 */
31 #define CTRL1 0x03 /* Control 1 */
32 #define CTRL2 0x04 /* Control 2 */
33 #define DEMP1 0x05 /* De-emphasis1 */
34 #define DEMP2 0x06 /* De-emphasis2 */
35 #define OFD 0x07 /* Overflow Detect */
36 #define ZRD 0x08 /* Zero Detect */
37 #define ICTRL 0x09 /* Input Control */
38 #define OCTRL 0x0a /* Output Control */
39 #define LOUT1 0x0b /* LOUT1 Volume Control */
40 #define ROUT1 0x0c /* ROUT1 Volume Control */
41 #define LOUT2 0x0d /* LOUT2 Volume Control */
42 #define ROUT2 0x0e /* ROUT2 Volume Control */
43 #define LOUT3 0x0f /* LOUT3 Volume Control */
44 #define ROUT3 0x10 /* ROUT3 Volume Control */
45 #define LOUT4 0x11 /* LOUT4 Volume Control */
46 #define ROUT4 0x12 /* ROUT4 Volume Control */
47 #define LOUT5 0x13 /* LOUT5 Volume Control */
48 #define ROUT5 0x14 /* ROUT5 Volume Control */
49 #define LOUT6 0x15 /* LOUT6 Volume Control */
50 #define ROUT6 0x16 /* ROUT6 Volume Control */
51
52 /* PW_MGMT1 */
53 #define RSTN BIT(0)
54 #define PMDAC BIT(1)
55 #define PMADC BIT(2)
56 #define PMVR BIT(3)
57
58 /* PW_MGMT2 */
59 #define PMAD_ALL 0x7
60
61 /* PW_MGMT3 */
62 #define PMDA_ALL 0x3f
63
64 /* CTRL1 */
65 #define DIF0 BIT(3)
66 #define DIF1 BIT(4)
67 #define DIF2 BIT(5)
68 #define TDM0 BIT(6)
69 #define TDM1 BIT(7)
70 #define NO_FMT (0xff)
71 #define FMT_MASK (0xf8)
72
73 /* CTRL2 */
74 #define DFS_MASK (3 << 2)
75 #define DFS_NORMAL_SPEED (0 << 2)
76 #define DFS_DOUBLE_SPEED (1 << 2)
77 #define DFS_QUAD_SPEED (2 << 2)
78
79 /* ICTRL */
80 #define ICTRL_MASK (0x3)
81
82 /* OCTRL */
83 #define OCTRL_MASK (0x3F)
84
85 struct ak4613_formats {
86 unsigned int width;
87 unsigned int fmt;
88 };
89
90 struct ak4613_interface {
91 struct ak4613_formats capture;
92 struct ak4613_formats playback;
93 };
94
95 struct ak4613_priv {
96 struct mutex lock;
97 const struct ak4613_interface *iface;
98 struct snd_pcm_hw_constraint_list constraint;
99 struct work_struct dummy_write_work;
100 struct snd_soc_component *component;
101 unsigned int rate;
102 unsigned int sysclk;
103
104 unsigned int fmt;
105 u8 oc;
106 u8 ic;
107 int cnt;
108 };
109
110 /*
111 * Playback Volume
112 *
113 * max : 0x00 : 0 dB
114 * ( 0.5 dB step )
115 * min : 0xFE : -127.0 dB
116 * mute: 0xFF
117 */
118 static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
119
120 static const struct snd_kcontrol_new ak4613_snd_controls[] = {
121 SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
122 0, 0xFF, 1, out_tlv),
123 SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
124 0, 0xFF, 1, out_tlv),
125 SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
126 0, 0xFF, 1, out_tlv),
127 SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
128 0, 0xFF, 1, out_tlv),
129 SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
130 0, 0xFF, 1, out_tlv),
131 SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
132 0, 0xFF, 1, out_tlv),
133 };
134
135 static const struct reg_default ak4613_reg[] = {
136 { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
137 { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
138 { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
139 { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
140 { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
141 { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
142 };
143
144 #define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
145 #define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
146 static const struct ak4613_interface ak4613_iface[] = {
147 /* capture */ /* playback */
148 /* [0] - [2] are not supported */
149 [3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) },
150 [4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) },
151 };
152
153 static const struct regmap_config ak4613_regmap_cfg = {
154 .reg_bits = 8,
155 .val_bits = 8,
156 .max_register = 0x16,
157 .reg_defaults = ak4613_reg,
158 .num_reg_defaults = ARRAY_SIZE(ak4613_reg),
159 .cache_type = REGCACHE_RBTREE,
160 };
161
162 static const struct of_device_id ak4613_of_match[] = {
163 { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg },
164 {},
165 };
166 MODULE_DEVICE_TABLE(of, ak4613_of_match);
167
168 static const struct i2c_device_id ak4613_i2c_id[] = {
169 { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
170 { }
171 };
172 MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
173
174 static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
175
176 /* Outputs */
177 SND_SOC_DAPM_OUTPUT("LOUT1"),
178 SND_SOC_DAPM_OUTPUT("LOUT2"),
179 SND_SOC_DAPM_OUTPUT("LOUT3"),
180 SND_SOC_DAPM_OUTPUT("LOUT4"),
181 SND_SOC_DAPM_OUTPUT("LOUT5"),
182 SND_SOC_DAPM_OUTPUT("LOUT6"),
183
184 SND_SOC_DAPM_OUTPUT("ROUT1"),
185 SND_SOC_DAPM_OUTPUT("ROUT2"),
186 SND_SOC_DAPM_OUTPUT("ROUT3"),
187 SND_SOC_DAPM_OUTPUT("ROUT4"),
188 SND_SOC_DAPM_OUTPUT("ROUT5"),
189 SND_SOC_DAPM_OUTPUT("ROUT6"),
190
191 /* Inputs */
192 SND_SOC_DAPM_INPUT("LIN1"),
193 SND_SOC_DAPM_INPUT("LIN2"),
194
195 SND_SOC_DAPM_INPUT("RIN1"),
196 SND_SOC_DAPM_INPUT("RIN2"),
197
198 /* DAC */
199 SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
200 SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
201 SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
202 SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
203 SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
204 SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
205
206 /* ADC */
207 SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
208 SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
209 };
210
211 static const struct snd_soc_dapm_route ak4613_intercon[] = {
212 {"LOUT1", NULL, "DAC1"},
213 {"LOUT2", NULL, "DAC2"},
214 {"LOUT3", NULL, "DAC3"},
215 {"LOUT4", NULL, "DAC4"},
216 {"LOUT5", NULL, "DAC5"},
217 {"LOUT6", NULL, "DAC6"},
218
219 {"ROUT1", NULL, "DAC1"},
220 {"ROUT2", NULL, "DAC2"},
221 {"ROUT3", NULL, "DAC3"},
222 {"ROUT4", NULL, "DAC4"},
223 {"ROUT5", NULL, "DAC5"},
224 {"ROUT6", NULL, "DAC6"},
225
226 {"DAC1", NULL, "Playback"},
227 {"DAC2", NULL, "Playback"},
228 {"DAC3", NULL, "Playback"},
229 {"DAC4", NULL, "Playback"},
230 {"DAC5", NULL, "Playback"},
231 {"DAC6", NULL, "Playback"},
232
233 {"Capture", NULL, "ADC1"},
234 {"Capture", NULL, "ADC2"},
235
236 {"ADC1", NULL, "LIN1"},
237 {"ADC2", NULL, "LIN2"},
238
239 {"ADC1", NULL, "RIN1"},
240 {"ADC2", NULL, "RIN2"},
241 };
242
243 static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
244 struct snd_soc_dai *dai)
245 {
246 struct snd_soc_component *component = dai->component;
247 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
248 struct device *dev = component->dev;
249
250 mutex_lock(&priv->lock);
251 priv->cnt--;
252 if (priv->cnt < 0) {
253 dev_err(dev, "unexpected counter error\n");
254 priv->cnt = 0;
255 }
256 if (!priv->cnt)
257 priv->iface = NULL;
258 mutex_unlock(&priv->lock);
259 }
260
261 static void ak4613_hw_constraints(struct ak4613_priv *priv,
262 struct snd_pcm_runtime *runtime)
263 {
264 static const unsigned int ak4613_rates[] = {
265 32000,
266 44100,
267 48000,
268 64000,
269 88200,
270 96000,
271 176400,
272 192000,
273 };
274 struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
275 unsigned int fs;
276 int i;
277
278 constraint->list = ak4613_rates;
279 constraint->mask = 0;
280 constraint->count = 0;
281
282 /*
283 * Slave Mode
284 * Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
285 * Double: [64kHz, 96kHz] : 256fs
286 * Quad : [128kHz,192kHz]: 128fs
287 *
288 * Master mode
289 * Normal: [32kHz, 48kHz] : 256fs or 512fs
290 * Double: [64kHz, 96kHz] : 256fs
291 * Quad : [128kHz,192kHz]: 128fs
292 */
293 for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
294 /* minimum fs on each range */
295 fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
296
297 if (priv->sysclk >= ak4613_rates[i] * fs)
298 constraint->count = i + 1;
299 }
300
301 snd_pcm_hw_constraint_list(runtime, 0,
302 SNDRV_PCM_HW_PARAM_RATE, constraint);
303 }
304
305 static int ak4613_dai_startup(struct snd_pcm_substream *substream,
306 struct snd_soc_dai *dai)
307 {
308 struct snd_soc_component *component = dai->component;
309 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
310
311 priv->cnt++;
312
313 ak4613_hw_constraints(priv, substream->runtime);
314
315 return 0;
316 }
317
318 static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
319 int clk_id, unsigned int freq, int dir)
320 {
321 struct snd_soc_component *component = codec_dai->component;
322 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
323
324 priv->sysclk = freq;
325
326 return 0;
327 }
328
329 static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
330 {
331 struct snd_soc_component *component = dai->component;
332 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
333
334 fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
335
336 switch (fmt) {
337 case SND_SOC_DAIFMT_LEFT_J:
338 case SND_SOC_DAIFMT_I2S:
339 priv->fmt = fmt;
340 break;
341 default:
342 return -EINVAL;
343 }
344
345 return 0;
346 }
347
348 static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
349 int is_play,
350 unsigned int fmt, unsigned int width)
351 {
352 const struct ak4613_formats *fmts;
353
354 fmts = (is_play) ? &iface->playback : &iface->capture;
355
356 if (fmts->fmt != fmt)
357 return false;
358
359 if (fmts->width != width)
360 return false;
361
362 return true;
363 }
364
365 static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
366 struct snd_pcm_hw_params *params,
367 struct snd_soc_dai *dai)
368 {
369 struct snd_soc_component *component = dai->component;
370 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
371 const struct ak4613_interface *iface;
372 struct device *dev = component->dev;
373 unsigned int width = params_width(params);
374 unsigned int fmt = priv->fmt;
375 unsigned int rate;
376 int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
377 int i, ret;
378 u8 fmt_ctrl, ctrl2;
379
380 rate = params_rate(params);
381 switch (rate) {
382 case 32000:
383 case 44100:
384 case 48000:
385 ctrl2 = DFS_NORMAL_SPEED;
386 break;
387 case 64000:
388 case 88200:
389 case 96000:
390 ctrl2 = DFS_DOUBLE_SPEED;
391 break;
392 case 176400:
393 case 192000:
394 ctrl2 = DFS_QUAD_SPEED;
395 break;
396 default:
397 return -EINVAL;
398 }
399 priv->rate = rate;
400
401 /*
402 * FIXME
403 *
404 * It doesn't support TDM at this point
405 */
406 fmt_ctrl = NO_FMT;
407 ret = -EINVAL;
408 iface = NULL;
409
410 mutex_lock(&priv->lock);
411 if (priv->iface) {
412 if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
413 iface = priv->iface;
414 } else {
415 for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
416 if (!ak4613_dai_fmt_matching(ak4613_iface + i,
417 is_play,
418 fmt, width))
419 continue;
420 iface = ak4613_iface + i;
421 break;
422 }
423 }
424
425 if ((priv->iface == NULL) ||
426 (priv->iface == iface)) {
427 priv->iface = iface;
428 ret = 0;
429 }
430 mutex_unlock(&priv->lock);
431
432 if (ret < 0)
433 goto hw_params_end;
434
435 fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
436
437 snd_soc_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl);
438 snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);
439
440 snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
441 snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc);
442
443 hw_params_end:
444 if (ret < 0)
445 dev_warn(dev, "unsupported data width/format combination\n");
446
447 return ret;
448 }
449
450 static int ak4613_set_bias_level(struct snd_soc_component *component,
451 enum snd_soc_bias_level level)
452 {
453 u8 mgmt1 = 0;
454
455 switch (level) {
456 case SND_SOC_BIAS_ON:
457 mgmt1 |= RSTN;
458 /* fall through */
459 case SND_SOC_BIAS_PREPARE:
460 mgmt1 |= PMADC | PMDAC;
461 /* fall through */
462 case SND_SOC_BIAS_STANDBY:
463 mgmt1 |= PMVR;
464 /* fall through */
465 case SND_SOC_BIAS_OFF:
466 default:
467 break;
468 }
469
470 snd_soc_component_write(component, PW_MGMT1, mgmt1);
471
472 return 0;
473 }
474
475 static void ak4613_dummy_write(struct work_struct *work)
476 {
477 struct ak4613_priv *priv = container_of(work,
478 struct ak4613_priv,
479 dummy_write_work);
480 struct snd_soc_component *component = priv->component;
481 unsigned int mgmt1;
482 unsigned int mgmt3;
483
484 /*
485 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
486 *
487 * Note
488 *
489 * To avoid extra delay, we want to avoid preemption here,
490 * but we can't. Because it uses I2C access which is using IRQ
491 * and sleep. Thus, delay might be more than 5 LR clocks
492 * see also
493 * ak4613_dai_trigger()
494 */
495 udelay(5000000 / priv->rate);
496
497 snd_soc_component_read(component, PW_MGMT1, &mgmt1);
498 snd_soc_component_read(component, PW_MGMT3, &mgmt3);
499
500 snd_soc_component_write(component, PW_MGMT1, mgmt1);
501 snd_soc_component_write(component, PW_MGMT3, mgmt3);
502 }
503
504 static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd,
505 struct snd_soc_dai *dai)
506 {
507 struct snd_soc_component *component = dai->component;
508 struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
509
510 /*
511 * FIXME
512 *
513 * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
514 * from Power Down Release. Otherwise, Playback volume will be 0dB.
515 * To avoid complex multiple delay/dummy_write method from
516 * ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...),
517 * call it once here.
518 *
519 * But, unfortunately, we can't "write" here because here is atomic
520 * context (It uses I2C access for writing).
521 * Thus, use schedule_work() to switching to normal context
522 * immediately.
523 *
524 * Note
525 *
526 * Calling ak4613_dummy_write() function might be delayed.
527 * In such case, ak4613 volume might be temporarily 0dB when
528 * beggining of playback.
529 * see also
530 * ak4613_dummy_write()
531 */
532
533 if ((cmd != SNDRV_PCM_TRIGGER_START) &&
534 (cmd != SNDRV_PCM_TRIGGER_RESUME))
535 return 0;
536
537 if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
538 return 0;
539
540 priv->component = component;
541 schedule_work(&priv->dummy_write_work);
542
543 return 0;
544 }
545
546 static const struct snd_soc_dai_ops ak4613_dai_ops = {
547 .startup = ak4613_dai_startup,
548 .shutdown = ak4613_dai_shutdown,
549 .set_sysclk = ak4613_dai_set_sysclk,
550 .set_fmt = ak4613_dai_set_fmt,
551 .trigger = ak4613_dai_trigger,
552 .hw_params = ak4613_dai_hw_params,
553 };
554
555 #define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\
556 SNDRV_PCM_RATE_44100 |\
557 SNDRV_PCM_RATE_48000 |\
558 SNDRV_PCM_RATE_64000 |\
559 SNDRV_PCM_RATE_88200 |\
560 SNDRV_PCM_RATE_96000 |\
561 SNDRV_PCM_RATE_176400 |\
562 SNDRV_PCM_RATE_192000)
563 #define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE)
564
565 static struct snd_soc_dai_driver ak4613_dai = {
566 .name = "ak4613-hifi",
567 .playback = {
568 .stream_name = "Playback",
569 .channels_min = 2,
570 .channels_max = 2,
571 .rates = AK4613_PCM_RATE,
572 .formats = AK4613_PCM_FMTBIT,
573 },
574 .capture = {
575 .stream_name = "Capture",
576 .channels_min = 2,
577 .channels_max = 2,
578 .rates = AK4613_PCM_RATE,
579 .formats = AK4613_PCM_FMTBIT,
580 },
581 .ops = &ak4613_dai_ops,
582 .symmetric_rates = 1,
583 };
584
585 static int ak4613_suspend(struct snd_soc_component *component)
586 {
587 struct regmap *regmap = dev_get_regmap(component->dev, NULL);
588
589 regcache_cache_only(regmap, true);
590 regcache_mark_dirty(regmap);
591 return 0;
592 }
593
594 static int ak4613_resume(struct snd_soc_component *component)
595 {
596 struct regmap *regmap = dev_get_regmap(component->dev, NULL);
597
598 regcache_cache_only(regmap, false);
599 return regcache_sync(regmap);
600 }
601
602 static const struct snd_soc_component_driver soc_component_dev_ak4613 = {
603 .suspend = ak4613_suspend,
604 .resume = ak4613_resume,
605 .set_bias_level = ak4613_set_bias_level,
606 .controls = ak4613_snd_controls,
607 .num_controls = ARRAY_SIZE(ak4613_snd_controls),
608 .dapm_widgets = ak4613_dapm_widgets,
609 .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
610 .dapm_routes = ak4613_intercon,
611 .num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
612 .idle_bias_on = 1,
613 .endianness = 1,
614 .non_legacy_dai_naming = 1,
615 };
616
617 static void ak4613_parse_of(struct ak4613_priv *priv,
618 struct device *dev)
619 {
620 struct device_node *np = dev->of_node;
621 char prop[32];
622 int i;
623
624 /* Input 1 - 2 */
625 for (i = 0; i < 2; i++) {
626 snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
627 if (!of_get_property(np, prop, NULL))
628 priv->ic |= 1 << i;
629 }
630
631 /* Output 1 - 6 */
632 for (i = 0; i < 6; i++) {
633 snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
634 if (!of_get_property(np, prop, NULL))
635 priv->oc |= 1 << i;
636 }
637 }
638
639 static int ak4613_i2c_probe(struct i2c_client *i2c,
640 const struct i2c_device_id *id)
641 {
642 struct device *dev = &i2c->dev;
643 struct device_node *np = dev->of_node;
644 const struct regmap_config *regmap_cfg;
645 struct regmap *regmap;
646 struct ak4613_priv *priv;
647
648 regmap_cfg = NULL;
649 if (np) {
650 const struct of_device_id *of_id;
651
652 of_id = of_match_device(ak4613_of_match, dev);
653 if (of_id)
654 regmap_cfg = of_id->data;
655 } else {
656 regmap_cfg = (const struct regmap_config *)id->driver_data;
657 }
658
659 if (!regmap_cfg)
660 return -EINVAL;
661
662 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
663 if (!priv)
664 return -ENOMEM;
665
666 ak4613_parse_of(priv, dev);
667
668 priv->iface = NULL;
669 priv->cnt = 0;
670 priv->sysclk = 0;
671 INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);
672
673 mutex_init(&priv->lock);
674
675 i2c_set_clientdata(i2c, priv);
676
677 regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
678 if (IS_ERR(regmap))
679 return PTR_ERR(regmap);
680
681 return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613,
682 &ak4613_dai, 1);
683 }
684
685 static int ak4613_i2c_remove(struct i2c_client *client)
686 {
687 return 0;
688 }
689
690 static struct i2c_driver ak4613_i2c_driver = {
691 .driver = {
692 .name = "ak4613-codec",
693 .of_match_table = ak4613_of_match,
694 },
695 .probe = ak4613_i2c_probe,
696 .remove = ak4613_i2c_remove,
697 .id_table = ak4613_i2c_id,
698 };
699
700 module_i2c_driver(ak4613_i2c_driver);
701
702 MODULE_DESCRIPTION("Soc AK4613 driver");
703 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
704 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support