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ASoC: wm8962: Replace direct snd_soc_codec dapm field access
[deliverable/linux.git] / sound / soc / codecs / wm9081.c
1 /*
2 * wm9081.c -- WM9081 ALSA SoC Audio driver
3 *
4 * Author: Mark Brown
5 *
6 * Copyright 2009-12 Wolfson Microelectronics plc
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 */
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/delay.h>
18 #include <linux/device.h>
19 #include <linux/pm.h>
20 #include <linux/i2c.h>
21 #include <linux/regmap.h>
22 #include <linux/slab.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/initval.h>
28 #include <sound/tlv.h>
29
30 #include <sound/wm9081.h>
31 #include "wm9081.h"
32
33 static struct reg_default wm9081_reg[] = {
34 { 2, 0x00B9 }, /* R2 - Analogue Lineout */
35 { 3, 0x00B9 }, /* R3 - Analogue Speaker PGA */
36 { 4, 0x0001 }, /* R4 - VMID Control */
37 { 5, 0x0068 }, /* R5 - Bias Control 1 */
38 { 7, 0x0000 }, /* R7 - Analogue Mixer */
39 { 8, 0x0000 }, /* R8 - Anti Pop Control */
40 { 9, 0x01DB }, /* R9 - Analogue Speaker 1 */
41 { 10, 0x0018 }, /* R10 - Analogue Speaker 2 */
42 { 11, 0x0180 }, /* R11 - Power Management */
43 { 12, 0x0000 }, /* R12 - Clock Control 1 */
44 { 13, 0x0038 }, /* R13 - Clock Control 2 */
45 { 14, 0x4000 }, /* R14 - Clock Control 3 */
46 { 16, 0x0000 }, /* R16 - FLL Control 1 */
47 { 17, 0x0200 }, /* R17 - FLL Control 2 */
48 { 18, 0x0000 }, /* R18 - FLL Control 3 */
49 { 19, 0x0204 }, /* R19 - FLL Control 4 */
50 { 20, 0x0000 }, /* R20 - FLL Control 5 */
51 { 22, 0x0000 }, /* R22 - Audio Interface 1 */
52 { 23, 0x0002 }, /* R23 - Audio Interface 2 */
53 { 24, 0x0008 }, /* R24 - Audio Interface 3 */
54 { 25, 0x0022 }, /* R25 - Audio Interface 4 */
55 { 27, 0x0006 }, /* R27 - Interrupt Status Mask */
56 { 28, 0x0000 }, /* R28 - Interrupt Polarity */
57 { 29, 0x0000 }, /* R29 - Interrupt Control */
58 { 30, 0x00C0 }, /* R30 - DAC Digital 1 */
59 { 31, 0x0008 }, /* R31 - DAC Digital 2 */
60 { 32, 0x09AF }, /* R32 - DRC 1 */
61 { 33, 0x4201 }, /* R33 - DRC 2 */
62 { 34, 0x0000 }, /* R34 - DRC 3 */
63 { 35, 0x0000 }, /* R35 - DRC 4 */
64 { 38, 0x0000 }, /* R38 - Write Sequencer 1 */
65 { 39, 0x0000 }, /* R39 - Write Sequencer 2 */
66 { 40, 0x0002 }, /* R40 - MW Slave 1 */
67 { 42, 0x0000 }, /* R42 - EQ 1 */
68 { 43, 0x0000 }, /* R43 - EQ 2 */
69 { 44, 0x0FCA }, /* R44 - EQ 3 */
70 { 45, 0x0400 }, /* R45 - EQ 4 */
71 { 46, 0x00B8 }, /* R46 - EQ 5 */
72 { 47, 0x1EB5 }, /* R47 - EQ 6 */
73 { 48, 0xF145 }, /* R48 - EQ 7 */
74 { 49, 0x0B75 }, /* R49 - EQ 8 */
75 { 50, 0x01C5 }, /* R50 - EQ 9 */
76 { 51, 0x169E }, /* R51 - EQ 10 */
77 { 52, 0xF829 }, /* R52 - EQ 11 */
78 { 53, 0x07AD }, /* R53 - EQ 12 */
79 { 54, 0x1103 }, /* R54 - EQ 13 */
80 { 55, 0x1C58 }, /* R55 - EQ 14 */
81 { 56, 0xF373 }, /* R56 - EQ 15 */
82 { 57, 0x0A54 }, /* R57 - EQ 16 */
83 { 58, 0x0558 }, /* R58 - EQ 17 */
84 { 59, 0x0564 }, /* R59 - EQ 18 */
85 { 60, 0x0559 }, /* R60 - EQ 19 */
86 { 61, 0x4000 }, /* R61 - EQ 20 */
87 };
88
89 static struct {
90 int ratio;
91 int clk_sys_rate;
92 } clk_sys_rates[] = {
93 { 64, 0 },
94 { 128, 1 },
95 { 192, 2 },
96 { 256, 3 },
97 { 384, 4 },
98 { 512, 5 },
99 { 768, 6 },
100 { 1024, 7 },
101 { 1408, 8 },
102 { 1536, 9 },
103 };
104
105 static struct {
106 int rate;
107 int sample_rate;
108 } sample_rates[] = {
109 { 8000, 0 },
110 { 11025, 1 },
111 { 12000, 2 },
112 { 16000, 3 },
113 { 22050, 4 },
114 { 24000, 5 },
115 { 32000, 6 },
116 { 44100, 7 },
117 { 48000, 8 },
118 { 88200, 9 },
119 { 96000, 10 },
120 };
121
122 static struct {
123 int div; /* *10 due to .5s */
124 int bclk_div;
125 } bclk_divs[] = {
126 { 10, 0 },
127 { 15, 1 },
128 { 20, 2 },
129 { 30, 3 },
130 { 40, 4 },
131 { 50, 5 },
132 { 55, 6 },
133 { 60, 7 },
134 { 80, 8 },
135 { 100, 9 },
136 { 110, 10 },
137 { 120, 11 },
138 { 160, 12 },
139 { 200, 13 },
140 { 220, 14 },
141 { 240, 15 },
142 { 250, 16 },
143 { 300, 17 },
144 { 320, 18 },
145 { 440, 19 },
146 { 480, 20 },
147 };
148
149 struct wm9081_priv {
150 struct regmap *regmap;
151 int sysclk_source;
152 int mclk_rate;
153 int sysclk_rate;
154 int fs;
155 int bclk;
156 int master;
157 int fll_fref;
158 int fll_fout;
159 int tdm_width;
160 struct wm9081_pdata pdata;
161 };
162
163 static bool wm9081_volatile_register(struct device *dev, unsigned int reg)
164 {
165 switch (reg) {
166 case WM9081_SOFTWARE_RESET:
167 case WM9081_INTERRUPT_STATUS:
168 return true;
169 default:
170 return false;
171 }
172 }
173
174 static bool wm9081_readable_register(struct device *dev, unsigned int reg)
175 {
176 switch (reg) {
177 case WM9081_SOFTWARE_RESET:
178 case WM9081_ANALOGUE_LINEOUT:
179 case WM9081_ANALOGUE_SPEAKER_PGA:
180 case WM9081_VMID_CONTROL:
181 case WM9081_BIAS_CONTROL_1:
182 case WM9081_ANALOGUE_MIXER:
183 case WM9081_ANTI_POP_CONTROL:
184 case WM9081_ANALOGUE_SPEAKER_1:
185 case WM9081_ANALOGUE_SPEAKER_2:
186 case WM9081_POWER_MANAGEMENT:
187 case WM9081_CLOCK_CONTROL_1:
188 case WM9081_CLOCK_CONTROL_2:
189 case WM9081_CLOCK_CONTROL_3:
190 case WM9081_FLL_CONTROL_1:
191 case WM9081_FLL_CONTROL_2:
192 case WM9081_FLL_CONTROL_3:
193 case WM9081_FLL_CONTROL_4:
194 case WM9081_FLL_CONTROL_5:
195 case WM9081_AUDIO_INTERFACE_1:
196 case WM9081_AUDIO_INTERFACE_2:
197 case WM9081_AUDIO_INTERFACE_3:
198 case WM9081_AUDIO_INTERFACE_4:
199 case WM9081_INTERRUPT_STATUS:
200 case WM9081_INTERRUPT_STATUS_MASK:
201 case WM9081_INTERRUPT_POLARITY:
202 case WM9081_INTERRUPT_CONTROL:
203 case WM9081_DAC_DIGITAL_1:
204 case WM9081_DAC_DIGITAL_2:
205 case WM9081_DRC_1:
206 case WM9081_DRC_2:
207 case WM9081_DRC_3:
208 case WM9081_DRC_4:
209 case WM9081_WRITE_SEQUENCER_1:
210 case WM9081_WRITE_SEQUENCER_2:
211 case WM9081_MW_SLAVE_1:
212 case WM9081_EQ_1:
213 case WM9081_EQ_2:
214 case WM9081_EQ_3:
215 case WM9081_EQ_4:
216 case WM9081_EQ_5:
217 case WM9081_EQ_6:
218 case WM9081_EQ_7:
219 case WM9081_EQ_8:
220 case WM9081_EQ_9:
221 case WM9081_EQ_10:
222 case WM9081_EQ_11:
223 case WM9081_EQ_12:
224 case WM9081_EQ_13:
225 case WM9081_EQ_14:
226 case WM9081_EQ_15:
227 case WM9081_EQ_16:
228 case WM9081_EQ_17:
229 case WM9081_EQ_18:
230 case WM9081_EQ_19:
231 case WM9081_EQ_20:
232 return true;
233 default:
234 return false;
235 }
236 }
237
238 static int wm9081_reset(struct regmap *map)
239 {
240 return regmap_write(map, WM9081_SOFTWARE_RESET, 0x9081);
241 }
242
243 static const DECLARE_TLV_DB_SCALE(drc_in_tlv, -4500, 75, 0);
244 static const DECLARE_TLV_DB_SCALE(drc_out_tlv, -2250, 75, 0);
245 static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0);
246 static unsigned int drc_max_tlv[] = {
247 TLV_DB_RANGE_HEAD(4),
248 0, 0, TLV_DB_SCALE_ITEM(1200, 0, 0),
249 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0),
250 2, 2, TLV_DB_SCALE_ITEM(2400, 0, 0),
251 3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0),
252 };
253 static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0);
254 static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -300, 50, 0);
255
256 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
257
258 static const DECLARE_TLV_DB_SCALE(in_tlv, -600, 600, 0);
259 static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1);
260 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
261
262 static const char *drc_high_text[] = {
263 "1",
264 "1/2",
265 "1/4",
266 "1/8",
267 "1/16",
268 "0",
269 };
270
271 static SOC_ENUM_SINGLE_DECL(drc_high, WM9081_DRC_3, 3, drc_high_text);
272
273 static const char *drc_low_text[] = {
274 "1",
275 "1/2",
276 "1/4",
277 "1/8",
278 "0",
279 };
280
281 static SOC_ENUM_SINGLE_DECL(drc_low, WM9081_DRC_3, 0, drc_low_text);
282
283 static const char *drc_atk_text[] = {
284 "181us",
285 "181us",
286 "363us",
287 "726us",
288 "1.45ms",
289 "2.9ms",
290 "5.8ms",
291 "11.6ms",
292 "23.2ms",
293 "46.4ms",
294 "92.8ms",
295 "185.6ms",
296 };
297
298 static SOC_ENUM_SINGLE_DECL(drc_atk, WM9081_DRC_2, 12, drc_atk_text);
299
300 static const char *drc_dcy_text[] = {
301 "186ms",
302 "372ms",
303 "743ms",
304 "1.49s",
305 "2.97s",
306 "5.94s",
307 "11.89s",
308 "23.78s",
309 "47.56s",
310 };
311
312 static SOC_ENUM_SINGLE_DECL(drc_dcy, WM9081_DRC_2, 8, drc_dcy_text);
313
314 static const char *drc_qr_dcy_text[] = {
315 "0.725ms",
316 "1.45ms",
317 "5.8ms",
318 };
319
320 static SOC_ENUM_SINGLE_DECL(drc_qr_dcy, WM9081_DRC_2, 4, drc_qr_dcy_text);
321
322 static const char *dac_deemph_text[] = {
323 "None",
324 "32kHz",
325 "44.1kHz",
326 "48kHz",
327 };
328
329 static SOC_ENUM_SINGLE_DECL(dac_deemph, WM9081_DAC_DIGITAL_2, 1,
330 dac_deemph_text);
331
332 static const char *speaker_mode_text[] = {
333 "Class D",
334 "Class AB",
335 };
336
337 static SOC_ENUM_SINGLE_DECL(speaker_mode, WM9081_ANALOGUE_SPEAKER_2, 6,
338 speaker_mode_text);
339
340 static int speaker_mode_get(struct snd_kcontrol *kcontrol,
341 struct snd_ctl_elem_value *ucontrol)
342 {
343 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
344 unsigned int reg;
345
346 reg = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2);
347 if (reg & WM9081_SPK_MODE)
348 ucontrol->value.integer.value[0] = 1;
349 else
350 ucontrol->value.integer.value[0] = 0;
351
352 return 0;
353 }
354
355 /*
356 * Stop any attempts to change speaker mode while the speaker is enabled.
357 *
358 * We also have some special anti-pop controls dependent on speaker
359 * mode which must be changed along with the mode.
360 */
361 static int speaker_mode_put(struct snd_kcontrol *kcontrol,
362 struct snd_ctl_elem_value *ucontrol)
363 {
364 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
365 unsigned int reg_pwr = snd_soc_read(codec, WM9081_POWER_MANAGEMENT);
366 unsigned int reg2 = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2);
367
368 /* Are we changing anything? */
369 if (ucontrol->value.integer.value[0] ==
370 ((reg2 & WM9081_SPK_MODE) != 0))
371 return 0;
372
373 /* Don't try to change modes while enabled */
374 if (reg_pwr & WM9081_SPK_ENA)
375 return -EINVAL;
376
377 if (ucontrol->value.integer.value[0]) {
378 /* Class AB */
379 reg2 &= ~(WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL);
380 reg2 |= WM9081_SPK_MODE;
381 } else {
382 /* Class D */
383 reg2 |= WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL;
384 reg2 &= ~WM9081_SPK_MODE;
385 }
386
387 snd_soc_write(codec, WM9081_ANALOGUE_SPEAKER_2, reg2);
388
389 return 0;
390 }
391
392 static const struct snd_kcontrol_new wm9081_snd_controls[] = {
393 SOC_SINGLE_TLV("IN1 Volume", WM9081_ANALOGUE_MIXER, 1, 1, 1, in_tlv),
394 SOC_SINGLE_TLV("IN2 Volume", WM9081_ANALOGUE_MIXER, 3, 1, 1, in_tlv),
395
396 SOC_SINGLE_TLV("Playback Volume", WM9081_DAC_DIGITAL_1, 1, 96, 0, dac_tlv),
397
398 SOC_SINGLE("LINEOUT Switch", WM9081_ANALOGUE_LINEOUT, 7, 1, 1),
399 SOC_SINGLE("LINEOUT ZC Switch", WM9081_ANALOGUE_LINEOUT, 6, 1, 0),
400 SOC_SINGLE_TLV("LINEOUT Volume", WM9081_ANALOGUE_LINEOUT, 0, 63, 0, out_tlv),
401
402 SOC_SINGLE("DRC Switch", WM9081_DRC_1, 15, 1, 0),
403 SOC_ENUM("DRC High Slope", drc_high),
404 SOC_ENUM("DRC Low Slope", drc_low),
405 SOC_SINGLE_TLV("DRC Input Volume", WM9081_DRC_4, 5, 60, 1, drc_in_tlv),
406 SOC_SINGLE_TLV("DRC Output Volume", WM9081_DRC_4, 0, 30, 1, drc_out_tlv),
407 SOC_SINGLE_TLV("DRC Minimum Volume", WM9081_DRC_2, 2, 3, 1, drc_min_tlv),
408 SOC_SINGLE_TLV("DRC Maximum Volume", WM9081_DRC_2, 0, 3, 0, drc_max_tlv),
409 SOC_ENUM("DRC Attack", drc_atk),
410 SOC_ENUM("DRC Decay", drc_dcy),
411 SOC_SINGLE("DRC Quick Release Switch", WM9081_DRC_1, 2, 1, 0),
412 SOC_SINGLE_TLV("DRC Quick Release Volume", WM9081_DRC_2, 6, 3, 0, drc_qr_tlv),
413 SOC_ENUM("DRC Quick Release Decay", drc_qr_dcy),
414 SOC_SINGLE_TLV("DRC Startup Volume", WM9081_DRC_1, 6, 18, 0, drc_startup_tlv),
415
416 SOC_SINGLE("EQ Switch", WM9081_EQ_1, 0, 1, 0),
417
418 SOC_SINGLE("Speaker DC Volume", WM9081_ANALOGUE_SPEAKER_1, 3, 5, 0),
419 SOC_SINGLE("Speaker AC Volume", WM9081_ANALOGUE_SPEAKER_1, 0, 5, 0),
420 SOC_SINGLE("Speaker Switch", WM9081_ANALOGUE_SPEAKER_PGA, 7, 1, 1),
421 SOC_SINGLE("Speaker ZC Switch", WM9081_ANALOGUE_SPEAKER_PGA, 6, 1, 0),
422 SOC_SINGLE_TLV("Speaker Volume", WM9081_ANALOGUE_SPEAKER_PGA, 0, 63, 0,
423 out_tlv),
424 SOC_ENUM("DAC Deemphasis", dac_deemph),
425 SOC_ENUM_EXT("Speaker Mode", speaker_mode, speaker_mode_get, speaker_mode_put),
426 };
427
428 static const struct snd_kcontrol_new wm9081_eq_controls[] = {
429 SOC_SINGLE_TLV("EQ1 Volume", WM9081_EQ_1, 11, 24, 0, eq_tlv),
430 SOC_SINGLE_TLV("EQ2 Volume", WM9081_EQ_1, 6, 24, 0, eq_tlv),
431 SOC_SINGLE_TLV("EQ3 Volume", WM9081_EQ_1, 1, 24, 0, eq_tlv),
432 SOC_SINGLE_TLV("EQ4 Volume", WM9081_EQ_2, 11, 24, 0, eq_tlv),
433 SOC_SINGLE_TLV("EQ5 Volume", WM9081_EQ_2, 6, 24, 0, eq_tlv),
434 };
435
436 static const struct snd_kcontrol_new mixer[] = {
437 SOC_DAPM_SINGLE("IN1 Switch", WM9081_ANALOGUE_MIXER, 0, 1, 0),
438 SOC_DAPM_SINGLE("IN2 Switch", WM9081_ANALOGUE_MIXER, 2, 1, 0),
439 SOC_DAPM_SINGLE("Playback Switch", WM9081_ANALOGUE_MIXER, 4, 1, 0),
440 };
441
442 struct _fll_div {
443 u16 fll_fratio;
444 u16 fll_outdiv;
445 u16 fll_clk_ref_div;
446 u16 n;
447 u16 k;
448 };
449
450 /* The size in bits of the FLL divide multiplied by 10
451 * to allow rounding later */
452 #define FIXED_FLL_SIZE ((1 << 16) * 10)
453
454 static struct {
455 unsigned int min;
456 unsigned int max;
457 u16 fll_fratio;
458 int ratio;
459 } fll_fratios[] = {
460 { 0, 64000, 4, 16 },
461 { 64000, 128000, 3, 8 },
462 { 128000, 256000, 2, 4 },
463 { 256000, 1000000, 1, 2 },
464 { 1000000, 13500000, 0, 1 },
465 };
466
467 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
468 unsigned int Fout)
469 {
470 u64 Kpart;
471 unsigned int K, Ndiv, Nmod, target;
472 unsigned int div;
473 int i;
474
475 /* Fref must be <=13.5MHz */
476 div = 1;
477 while ((Fref / div) > 13500000) {
478 div *= 2;
479
480 if (div > 8) {
481 pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
482 Fref);
483 return -EINVAL;
484 }
485 }
486 fll_div->fll_clk_ref_div = div / 2;
487
488 pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
489
490 /* Apply the division for our remaining calculations */
491 Fref /= div;
492
493 /* Fvco should be 90-100MHz; don't check the upper bound */
494 div = 0;
495 target = Fout * 2;
496 while (target < 90000000) {
497 div++;
498 target *= 2;
499 if (div > 7) {
500 pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
501 Fout);
502 return -EINVAL;
503 }
504 }
505 fll_div->fll_outdiv = div;
506
507 pr_debug("Fvco=%dHz\n", target);
508
509 /* Find an appropriate FLL_FRATIO and factor it out of the target */
510 for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
511 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
512 fll_div->fll_fratio = fll_fratios[i].fll_fratio;
513 target /= fll_fratios[i].ratio;
514 break;
515 }
516 }
517 if (i == ARRAY_SIZE(fll_fratios)) {
518 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
519 return -EINVAL;
520 }
521
522 /* Now, calculate N.K */
523 Ndiv = target / Fref;
524
525 fll_div->n = Ndiv;
526 Nmod = target % Fref;
527 pr_debug("Nmod=%d\n", Nmod);
528
529 /* Calculate fractional part - scale up so we can round. */
530 Kpart = FIXED_FLL_SIZE * (long long)Nmod;
531
532 do_div(Kpart, Fref);
533
534 K = Kpart & 0xFFFFFFFF;
535
536 if ((K % 10) >= 5)
537 K += 5;
538
539 /* Move down to proper range now rounding is done */
540 fll_div->k = K / 10;
541
542 pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
543 fll_div->n, fll_div->k,
544 fll_div->fll_fratio, fll_div->fll_outdiv,
545 fll_div->fll_clk_ref_div);
546
547 return 0;
548 }
549
550 static int wm9081_set_fll(struct snd_soc_codec *codec, int fll_id,
551 unsigned int Fref, unsigned int Fout)
552 {
553 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
554 u16 reg1, reg4, reg5;
555 struct _fll_div fll_div;
556 int ret;
557 int clk_sys_reg;
558
559 /* Any change? */
560 if (Fref == wm9081->fll_fref && Fout == wm9081->fll_fout)
561 return 0;
562
563 /* Disable the FLL */
564 if (Fout == 0) {
565 dev_dbg(codec->dev, "FLL disabled\n");
566 wm9081->fll_fref = 0;
567 wm9081->fll_fout = 0;
568
569 return 0;
570 }
571
572 ret = fll_factors(&fll_div, Fref, Fout);
573 if (ret != 0)
574 return ret;
575
576 reg5 = snd_soc_read(codec, WM9081_FLL_CONTROL_5);
577 reg5 &= ~WM9081_FLL_CLK_SRC_MASK;
578
579 switch (fll_id) {
580 case WM9081_SYSCLK_FLL_MCLK:
581 reg5 |= 0x1;
582 break;
583
584 default:
585 dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
586 return -EINVAL;
587 }
588
589 /* Disable CLK_SYS while we reconfigure */
590 clk_sys_reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3);
591 if (clk_sys_reg & WM9081_CLK_SYS_ENA)
592 snd_soc_write(codec, WM9081_CLOCK_CONTROL_3,
593 clk_sys_reg & ~WM9081_CLK_SYS_ENA);
594
595 /* Any FLL configuration change requires that the FLL be
596 * disabled first. */
597 reg1 = snd_soc_read(codec, WM9081_FLL_CONTROL_1);
598 reg1 &= ~WM9081_FLL_ENA;
599 snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1);
600
601 /* Apply the configuration */
602 if (fll_div.k)
603 reg1 |= WM9081_FLL_FRAC_MASK;
604 else
605 reg1 &= ~WM9081_FLL_FRAC_MASK;
606 snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1);
607
608 snd_soc_write(codec, WM9081_FLL_CONTROL_2,
609 (fll_div.fll_outdiv << WM9081_FLL_OUTDIV_SHIFT) |
610 (fll_div.fll_fratio << WM9081_FLL_FRATIO_SHIFT));
611 snd_soc_write(codec, WM9081_FLL_CONTROL_3, fll_div.k);
612
613 reg4 = snd_soc_read(codec, WM9081_FLL_CONTROL_4);
614 reg4 &= ~WM9081_FLL_N_MASK;
615 reg4 |= fll_div.n << WM9081_FLL_N_SHIFT;
616 snd_soc_write(codec, WM9081_FLL_CONTROL_4, reg4);
617
618 reg5 &= ~WM9081_FLL_CLK_REF_DIV_MASK;
619 reg5 |= fll_div.fll_clk_ref_div << WM9081_FLL_CLK_REF_DIV_SHIFT;
620 snd_soc_write(codec, WM9081_FLL_CONTROL_5, reg5);
621
622 /* Set gain to the recommended value */
623 snd_soc_update_bits(codec, WM9081_FLL_CONTROL_4,
624 WM9081_FLL_GAIN_MASK, 0);
625
626 /* Enable the FLL */
627 snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1 | WM9081_FLL_ENA);
628
629 /* Then bring CLK_SYS up again if it was disabled */
630 if (clk_sys_reg & WM9081_CLK_SYS_ENA)
631 snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, clk_sys_reg);
632
633 dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
634
635 wm9081->fll_fref = Fref;
636 wm9081->fll_fout = Fout;
637
638 return 0;
639 }
640
641 static int configure_clock(struct snd_soc_codec *codec)
642 {
643 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
644 int new_sysclk, i, target;
645 unsigned int reg;
646 int ret = 0;
647 int mclkdiv = 0;
648 int fll = 0;
649
650 switch (wm9081->sysclk_source) {
651 case WM9081_SYSCLK_MCLK:
652 if (wm9081->mclk_rate > 12225000) {
653 mclkdiv = 1;
654 wm9081->sysclk_rate = wm9081->mclk_rate / 2;
655 } else {
656 wm9081->sysclk_rate = wm9081->mclk_rate;
657 }
658 wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK, 0, 0);
659 break;
660
661 case WM9081_SYSCLK_FLL_MCLK:
662 /* If we have a sample rate calculate a CLK_SYS that
663 * gives us a suitable DAC configuration, plus BCLK.
664 * Ideally we would check to see if we can clock
665 * directly from MCLK and only use the FLL if this is
666 * not the case, though care must be taken with free
667 * running mode.
668 */
669 if (wm9081->master && wm9081->bclk) {
670 /* Make sure we can generate CLK_SYS and BCLK
671 * and that we've got 3MHz for optimal
672 * performance. */
673 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
674 target = wm9081->fs * clk_sys_rates[i].ratio;
675 new_sysclk = target;
676 if (target >= wm9081->bclk &&
677 target > 3000000)
678 break;
679 }
680
681 if (i == ARRAY_SIZE(clk_sys_rates))
682 return -EINVAL;
683
684 } else if (wm9081->fs) {
685 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
686 new_sysclk = clk_sys_rates[i].ratio
687 * wm9081->fs;
688 if (new_sysclk > 3000000)
689 break;
690 }
691
692 if (i == ARRAY_SIZE(clk_sys_rates))
693 return -EINVAL;
694
695 } else {
696 new_sysclk = 12288000;
697 }
698
699 ret = wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK,
700 wm9081->mclk_rate, new_sysclk);
701 if (ret == 0) {
702 wm9081->sysclk_rate = new_sysclk;
703
704 /* Switch SYSCLK over to FLL */
705 fll = 1;
706 } else {
707 wm9081->sysclk_rate = wm9081->mclk_rate;
708 }
709 break;
710
711 default:
712 return -EINVAL;
713 }
714
715 reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_1);
716 if (mclkdiv)
717 reg |= WM9081_MCLKDIV2;
718 else
719 reg &= ~WM9081_MCLKDIV2;
720 snd_soc_write(codec, WM9081_CLOCK_CONTROL_1, reg);
721
722 reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3);
723 if (fll)
724 reg |= WM9081_CLK_SRC_SEL;
725 else
726 reg &= ~WM9081_CLK_SRC_SEL;
727 snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, reg);
728
729 dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm9081->sysclk_rate);
730
731 return ret;
732 }
733
734 static int clk_sys_event(struct snd_soc_dapm_widget *w,
735 struct snd_kcontrol *kcontrol, int event)
736 {
737 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
738 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
739
740 /* This should be done on init() for bypass paths */
741 switch (wm9081->sysclk_source) {
742 case WM9081_SYSCLK_MCLK:
743 dev_dbg(codec->dev, "Using %dHz MCLK\n", wm9081->mclk_rate);
744 break;
745 case WM9081_SYSCLK_FLL_MCLK:
746 dev_dbg(codec->dev, "Using %dHz MCLK with FLL\n",
747 wm9081->mclk_rate);
748 break;
749 default:
750 dev_err(codec->dev, "System clock not configured\n");
751 return -EINVAL;
752 }
753
754 switch (event) {
755 case SND_SOC_DAPM_PRE_PMU:
756 configure_clock(codec);
757 break;
758
759 case SND_SOC_DAPM_POST_PMD:
760 /* Disable the FLL if it's running */
761 wm9081_set_fll(codec, 0, 0, 0);
762 break;
763 }
764
765 return 0;
766 }
767
768 static const struct snd_soc_dapm_widget wm9081_dapm_widgets[] = {
769 SND_SOC_DAPM_INPUT("IN1"),
770 SND_SOC_DAPM_INPUT("IN2"),
771
772 SND_SOC_DAPM_DAC("DAC", NULL, WM9081_POWER_MANAGEMENT, 0, 0),
773
774 SND_SOC_DAPM_MIXER_NAMED_CTL("Mixer", SND_SOC_NOPM, 0, 0,
775 mixer, ARRAY_SIZE(mixer)),
776
777 SND_SOC_DAPM_PGA("LINEOUT PGA", WM9081_POWER_MANAGEMENT, 4, 0, NULL, 0),
778
779 SND_SOC_DAPM_PGA("Speaker PGA", WM9081_POWER_MANAGEMENT, 2, 0, NULL, 0),
780 SND_SOC_DAPM_OUT_DRV("Speaker", WM9081_POWER_MANAGEMENT, 1, 0, NULL, 0),
781
782 SND_SOC_DAPM_OUTPUT("LINEOUT"),
783 SND_SOC_DAPM_OUTPUT("SPKN"),
784 SND_SOC_DAPM_OUTPUT("SPKP"),
785
786 SND_SOC_DAPM_SUPPLY("CLK_SYS", WM9081_CLOCK_CONTROL_3, 0, 0, clk_sys_event,
787 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
788 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM9081_CLOCK_CONTROL_3, 1, 0, NULL, 0),
789 SND_SOC_DAPM_SUPPLY("TOCLK", WM9081_CLOCK_CONTROL_3, 2, 0, NULL, 0),
790 SND_SOC_DAPM_SUPPLY("TSENSE", WM9081_POWER_MANAGEMENT, 7, 0, NULL, 0),
791 };
792
793
794 static const struct snd_soc_dapm_route wm9081_audio_paths[] = {
795 { "DAC", NULL, "CLK_SYS" },
796 { "DAC", NULL, "CLK_DSP" },
797 { "DAC", NULL, "AIF" },
798
799 { "Mixer", "IN1 Switch", "IN1" },
800 { "Mixer", "IN2 Switch", "IN2" },
801 { "Mixer", "Playback Switch", "DAC" },
802
803 { "LINEOUT PGA", NULL, "Mixer" },
804 { "LINEOUT PGA", NULL, "TOCLK" },
805 { "LINEOUT PGA", NULL, "CLK_SYS" },
806
807 { "LINEOUT", NULL, "LINEOUT PGA" },
808
809 { "Speaker PGA", NULL, "Mixer" },
810 { "Speaker PGA", NULL, "TOCLK" },
811 { "Speaker PGA", NULL, "CLK_SYS" },
812
813 { "Speaker", NULL, "Speaker PGA" },
814 { "Speaker", NULL, "TSENSE" },
815
816 { "SPKN", NULL, "Speaker" },
817 { "SPKP", NULL, "Speaker" },
818 };
819
820 static int wm9081_set_bias_level(struct snd_soc_codec *codec,
821 enum snd_soc_bias_level level)
822 {
823 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
824
825 switch (level) {
826 case SND_SOC_BIAS_ON:
827 break;
828
829 case SND_SOC_BIAS_PREPARE:
830 /* VMID=2*40k */
831 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
832 WM9081_VMID_SEL_MASK, 0x2);
833
834 /* Normal bias current */
835 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
836 WM9081_STBY_BIAS_ENA, 0);
837 break;
838
839 case SND_SOC_BIAS_STANDBY:
840 /* Initial cold start */
841 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
842 regcache_cache_only(wm9081->regmap, false);
843 regcache_sync(wm9081->regmap);
844
845 /* Disable LINEOUT discharge */
846 snd_soc_update_bits(codec, WM9081_ANTI_POP_CONTROL,
847 WM9081_LINEOUT_DISCH, 0);
848
849 /* Select startup bias source */
850 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
851 WM9081_BIAS_SRC | WM9081_BIAS_ENA,
852 WM9081_BIAS_SRC | WM9081_BIAS_ENA);
853
854 /* VMID 2*4k; Soft VMID ramp enable */
855 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
856 WM9081_VMID_RAMP |
857 WM9081_VMID_SEL_MASK,
858 WM9081_VMID_RAMP | 0x6);
859
860 mdelay(100);
861
862 /* Normal bias enable & soft start off */
863 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
864 WM9081_VMID_RAMP, 0);
865
866 /* Standard bias source */
867 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
868 WM9081_BIAS_SRC, 0);
869 }
870
871 /* VMID 2*240k */
872 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
873 WM9081_VMID_SEL_MASK, 0x04);
874
875 /* Standby bias current on */
876 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
877 WM9081_STBY_BIAS_ENA,
878 WM9081_STBY_BIAS_ENA);
879 break;
880
881 case SND_SOC_BIAS_OFF:
882 /* Startup bias source and disable bias */
883 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
884 WM9081_BIAS_SRC | WM9081_BIAS_ENA,
885 WM9081_BIAS_SRC);
886
887 /* Disable VMID with soft ramping */
888 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
889 WM9081_VMID_RAMP | WM9081_VMID_SEL_MASK,
890 WM9081_VMID_RAMP);
891
892 /* Actively discharge LINEOUT */
893 snd_soc_update_bits(codec, WM9081_ANTI_POP_CONTROL,
894 WM9081_LINEOUT_DISCH,
895 WM9081_LINEOUT_DISCH);
896
897 regcache_cache_only(wm9081->regmap, true);
898 break;
899 }
900
901 return 0;
902 }
903
904 static int wm9081_set_dai_fmt(struct snd_soc_dai *dai,
905 unsigned int fmt)
906 {
907 struct snd_soc_codec *codec = dai->codec;
908 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
909 unsigned int aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2);
910
911 aif2 &= ~(WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV |
912 WM9081_BCLK_DIR | WM9081_LRCLK_DIR | WM9081_AIF_FMT_MASK);
913
914 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
915 case SND_SOC_DAIFMT_CBS_CFS:
916 wm9081->master = 0;
917 break;
918 case SND_SOC_DAIFMT_CBS_CFM:
919 aif2 |= WM9081_LRCLK_DIR;
920 wm9081->master = 1;
921 break;
922 case SND_SOC_DAIFMT_CBM_CFS:
923 aif2 |= WM9081_BCLK_DIR;
924 wm9081->master = 1;
925 break;
926 case SND_SOC_DAIFMT_CBM_CFM:
927 aif2 |= WM9081_LRCLK_DIR | WM9081_BCLK_DIR;
928 wm9081->master = 1;
929 break;
930 default:
931 return -EINVAL;
932 }
933
934 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
935 case SND_SOC_DAIFMT_DSP_B:
936 aif2 |= WM9081_AIF_LRCLK_INV;
937 case SND_SOC_DAIFMT_DSP_A:
938 aif2 |= 0x3;
939 break;
940 case SND_SOC_DAIFMT_I2S:
941 aif2 |= 0x2;
942 break;
943 case SND_SOC_DAIFMT_RIGHT_J:
944 break;
945 case SND_SOC_DAIFMT_LEFT_J:
946 aif2 |= 0x1;
947 break;
948 default:
949 return -EINVAL;
950 }
951
952 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
953 case SND_SOC_DAIFMT_DSP_A:
954 case SND_SOC_DAIFMT_DSP_B:
955 /* frame inversion not valid for DSP modes */
956 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
957 case SND_SOC_DAIFMT_NB_NF:
958 break;
959 case SND_SOC_DAIFMT_IB_NF:
960 aif2 |= WM9081_AIF_BCLK_INV;
961 break;
962 default:
963 return -EINVAL;
964 }
965 break;
966
967 case SND_SOC_DAIFMT_I2S:
968 case SND_SOC_DAIFMT_RIGHT_J:
969 case SND_SOC_DAIFMT_LEFT_J:
970 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
971 case SND_SOC_DAIFMT_NB_NF:
972 break;
973 case SND_SOC_DAIFMT_IB_IF:
974 aif2 |= WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV;
975 break;
976 case SND_SOC_DAIFMT_IB_NF:
977 aif2 |= WM9081_AIF_BCLK_INV;
978 break;
979 case SND_SOC_DAIFMT_NB_IF:
980 aif2 |= WM9081_AIF_LRCLK_INV;
981 break;
982 default:
983 return -EINVAL;
984 }
985 break;
986 default:
987 return -EINVAL;
988 }
989
990 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2);
991
992 return 0;
993 }
994
995 static int wm9081_hw_params(struct snd_pcm_substream *substream,
996 struct snd_pcm_hw_params *params,
997 struct snd_soc_dai *dai)
998 {
999 struct snd_soc_codec *codec = dai->codec;
1000 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
1001 int ret, i, best, best_val, cur_val;
1002 unsigned int clk_ctrl2, aif1, aif2, aif3, aif4;
1003
1004 clk_ctrl2 = snd_soc_read(codec, WM9081_CLOCK_CONTROL_2);
1005 clk_ctrl2 &= ~(WM9081_CLK_SYS_RATE_MASK | WM9081_SAMPLE_RATE_MASK);
1006
1007 aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1);
1008
1009 aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2);
1010 aif2 &= ~WM9081_AIF_WL_MASK;
1011
1012 aif3 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_3);
1013 aif3 &= ~WM9081_BCLK_DIV_MASK;
1014
1015 aif4 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_4);
1016 aif4 &= ~WM9081_LRCLK_RATE_MASK;
1017
1018 wm9081->fs = params_rate(params);
1019
1020 if (wm9081->tdm_width) {
1021 /* If TDM is set up then that fixes our BCLK. */
1022 int slots = ((aif1 & WM9081_AIFDAC_TDM_MODE_MASK) >>
1023 WM9081_AIFDAC_TDM_MODE_SHIFT) + 1;
1024
1025 wm9081->bclk = wm9081->fs * wm9081->tdm_width * slots;
1026 } else {
1027 /* Otherwise work out a BCLK from the sample size */
1028 wm9081->bclk = 2 * wm9081->fs;
1029
1030 switch (params_width(params)) {
1031 case 16:
1032 wm9081->bclk *= 16;
1033 break;
1034 case 20:
1035 wm9081->bclk *= 20;
1036 aif2 |= 0x4;
1037 break;
1038 case 24:
1039 wm9081->bclk *= 24;
1040 aif2 |= 0x8;
1041 break;
1042 case 32:
1043 wm9081->bclk *= 32;
1044 aif2 |= 0xc;
1045 break;
1046 default:
1047 return -EINVAL;
1048 }
1049 }
1050
1051 dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm9081->bclk);
1052
1053 ret = configure_clock(codec);
1054 if (ret != 0)
1055 return ret;
1056
1057 /* Select nearest CLK_SYS_RATE */
1058 best = 0;
1059 best_val = abs((wm9081->sysclk_rate / clk_sys_rates[0].ratio)
1060 - wm9081->fs);
1061 for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1062 cur_val = abs((wm9081->sysclk_rate /
1063 clk_sys_rates[i].ratio) - wm9081->fs);
1064 if (cur_val < best_val) {
1065 best = i;
1066 best_val = cur_val;
1067 }
1068 }
1069 dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
1070 clk_sys_rates[best].ratio);
1071 clk_ctrl2 |= (clk_sys_rates[best].clk_sys_rate
1072 << WM9081_CLK_SYS_RATE_SHIFT);
1073
1074 /* SAMPLE_RATE */
1075 best = 0;
1076 best_val = abs(wm9081->fs - sample_rates[0].rate);
1077 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1078 /* Closest match */
1079 cur_val = abs(wm9081->fs - sample_rates[i].rate);
1080 if (cur_val < best_val) {
1081 best = i;
1082 best_val = cur_val;
1083 }
1084 }
1085 dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
1086 sample_rates[best].rate);
1087 clk_ctrl2 |= (sample_rates[best].sample_rate
1088 << WM9081_SAMPLE_RATE_SHIFT);
1089
1090 /* BCLK_DIV */
1091 best = 0;
1092 best_val = INT_MAX;
1093 for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1094 cur_val = ((wm9081->sysclk_rate * 10) / bclk_divs[i].div)
1095 - wm9081->bclk;
1096 if (cur_val < 0) /* Table is sorted */
1097 break;
1098 if (cur_val < best_val) {
1099 best = i;
1100 best_val = cur_val;
1101 }
1102 }
1103 wm9081->bclk = (wm9081->sysclk_rate * 10) / bclk_divs[best].div;
1104 dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1105 bclk_divs[best].div, wm9081->bclk);
1106 aif3 |= bclk_divs[best].bclk_div;
1107
1108 /* LRCLK is a simple fraction of BCLK */
1109 dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm9081->bclk / wm9081->fs);
1110 aif4 |= wm9081->bclk / wm9081->fs;
1111
1112 /* Apply a ReTune Mobile configuration if it's in use */
1113 if (wm9081->pdata.num_retune_configs) {
1114 struct wm9081_pdata *pdata = &wm9081->pdata;
1115 struct wm9081_retune_mobile_setting *s;
1116 int eq1;
1117
1118 best = 0;
1119 best_val = abs(pdata->retune_configs[0].rate - wm9081->fs);
1120 for (i = 0; i < pdata->num_retune_configs; i++) {
1121 cur_val = abs(pdata->retune_configs[i].rate -
1122 wm9081->fs);
1123 if (cur_val < best_val) {
1124 best_val = cur_val;
1125 best = i;
1126 }
1127 }
1128 s = &pdata->retune_configs[best];
1129
1130 dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n",
1131 s->name, s->rate);
1132
1133 /* If the EQ is enabled then disable it while we write out */
1134 eq1 = snd_soc_read(codec, WM9081_EQ_1) & WM9081_EQ_ENA;
1135 if (eq1 & WM9081_EQ_ENA)
1136 snd_soc_write(codec, WM9081_EQ_1, 0);
1137
1138 /* Write out the other values */
1139 for (i = 1; i < ARRAY_SIZE(s->config); i++)
1140 snd_soc_write(codec, WM9081_EQ_1 + i, s->config[i]);
1141
1142 eq1 |= (s->config[0] & ~WM9081_EQ_ENA);
1143 snd_soc_write(codec, WM9081_EQ_1, eq1);
1144 }
1145
1146 snd_soc_write(codec, WM9081_CLOCK_CONTROL_2, clk_ctrl2);
1147 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2);
1148 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_3, aif3);
1149 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_4, aif4);
1150
1151 return 0;
1152 }
1153
1154 static int wm9081_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1155 {
1156 struct snd_soc_codec *codec = codec_dai->codec;
1157 unsigned int reg;
1158
1159 reg = snd_soc_read(codec, WM9081_DAC_DIGITAL_2);
1160
1161 if (mute)
1162 reg |= WM9081_DAC_MUTE;
1163 else
1164 reg &= ~WM9081_DAC_MUTE;
1165
1166 snd_soc_write(codec, WM9081_DAC_DIGITAL_2, reg);
1167
1168 return 0;
1169 }
1170
1171 static int wm9081_set_sysclk(struct snd_soc_codec *codec, int clk_id,
1172 int source, unsigned int freq, int dir)
1173 {
1174 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
1175
1176 switch (clk_id) {
1177 case WM9081_SYSCLK_MCLK:
1178 case WM9081_SYSCLK_FLL_MCLK:
1179 wm9081->sysclk_source = clk_id;
1180 wm9081->mclk_rate = freq;
1181 break;
1182
1183 default:
1184 return -EINVAL;
1185 }
1186
1187 return 0;
1188 }
1189
1190 static int wm9081_set_tdm_slot(struct snd_soc_dai *dai,
1191 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
1192 {
1193 struct snd_soc_codec *codec = dai->codec;
1194 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
1195 unsigned int aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1);
1196
1197 aif1 &= ~(WM9081_AIFDAC_TDM_SLOT_MASK | WM9081_AIFDAC_TDM_MODE_MASK);
1198
1199 if (slots < 0 || slots > 4)
1200 return -EINVAL;
1201
1202 wm9081->tdm_width = slot_width;
1203
1204 if (slots == 0)
1205 slots = 1;
1206
1207 aif1 |= (slots - 1) << WM9081_AIFDAC_TDM_MODE_SHIFT;
1208
1209 switch (rx_mask) {
1210 case 1:
1211 break;
1212 case 2:
1213 aif1 |= 0x10;
1214 break;
1215 case 4:
1216 aif1 |= 0x20;
1217 break;
1218 case 8:
1219 aif1 |= 0x30;
1220 break;
1221 default:
1222 return -EINVAL;
1223 }
1224
1225 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_1, aif1);
1226
1227 return 0;
1228 }
1229
1230 #define WM9081_RATES SNDRV_PCM_RATE_8000_96000
1231
1232 #define WM9081_FORMATS \
1233 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
1234 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
1235
1236 static const struct snd_soc_dai_ops wm9081_dai_ops = {
1237 .hw_params = wm9081_hw_params,
1238 .set_fmt = wm9081_set_dai_fmt,
1239 .digital_mute = wm9081_digital_mute,
1240 .set_tdm_slot = wm9081_set_tdm_slot,
1241 };
1242
1243 /* We report two channels because the CODEC processes a stereo signal, even
1244 * though it is only capable of handling a mono output.
1245 */
1246 static struct snd_soc_dai_driver wm9081_dai = {
1247 .name = "wm9081-hifi",
1248 .playback = {
1249 .stream_name = "AIF",
1250 .channels_min = 1,
1251 .channels_max = 2,
1252 .rates = WM9081_RATES,
1253 .formats = WM9081_FORMATS,
1254 },
1255 .ops = &wm9081_dai_ops,
1256 };
1257
1258 static int wm9081_probe(struct snd_soc_codec *codec)
1259 {
1260 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
1261
1262 /* Enable zero cross by default */
1263 snd_soc_update_bits(codec, WM9081_ANALOGUE_LINEOUT,
1264 WM9081_LINEOUTZC, WM9081_LINEOUTZC);
1265 snd_soc_update_bits(codec, WM9081_ANALOGUE_SPEAKER_PGA,
1266 WM9081_SPKPGAZC, WM9081_SPKPGAZC);
1267
1268 if (!wm9081->pdata.num_retune_configs) {
1269 dev_dbg(codec->dev,
1270 "No ReTune Mobile data, using normal EQ\n");
1271 snd_soc_add_codec_controls(codec, wm9081_eq_controls,
1272 ARRAY_SIZE(wm9081_eq_controls));
1273 }
1274
1275 return 0;
1276 }
1277
1278 static struct snd_soc_codec_driver soc_codec_dev_wm9081 = {
1279 .probe = wm9081_probe,
1280
1281 .set_sysclk = wm9081_set_sysclk,
1282 .set_bias_level = wm9081_set_bias_level,
1283
1284 .idle_bias_off = true,
1285
1286 .controls = wm9081_snd_controls,
1287 .num_controls = ARRAY_SIZE(wm9081_snd_controls),
1288 .dapm_widgets = wm9081_dapm_widgets,
1289 .num_dapm_widgets = ARRAY_SIZE(wm9081_dapm_widgets),
1290 .dapm_routes = wm9081_audio_paths,
1291 .num_dapm_routes = ARRAY_SIZE(wm9081_audio_paths),
1292 };
1293
1294 static const struct regmap_config wm9081_regmap = {
1295 .reg_bits = 8,
1296 .val_bits = 16,
1297
1298 .max_register = WM9081_MAX_REGISTER,
1299 .reg_defaults = wm9081_reg,
1300 .num_reg_defaults = ARRAY_SIZE(wm9081_reg),
1301 .volatile_reg = wm9081_volatile_register,
1302 .readable_reg = wm9081_readable_register,
1303 .cache_type = REGCACHE_RBTREE,
1304 };
1305
1306 #if IS_ENABLED(CONFIG_I2C)
1307 static int wm9081_i2c_probe(struct i2c_client *i2c,
1308 const struct i2c_device_id *id)
1309 {
1310 struct wm9081_priv *wm9081;
1311 unsigned int reg;
1312 int ret;
1313
1314 wm9081 = devm_kzalloc(&i2c->dev, sizeof(struct wm9081_priv),
1315 GFP_KERNEL);
1316 if (wm9081 == NULL)
1317 return -ENOMEM;
1318
1319 i2c_set_clientdata(i2c, wm9081);
1320
1321 wm9081->regmap = devm_regmap_init_i2c(i2c, &wm9081_regmap);
1322 if (IS_ERR(wm9081->regmap)) {
1323 ret = PTR_ERR(wm9081->regmap);
1324 dev_err(&i2c->dev, "regmap_init() failed: %d\n", ret);
1325 return ret;
1326 }
1327
1328 ret = regmap_read(wm9081->regmap, WM9081_SOFTWARE_RESET, &reg);
1329 if (ret != 0) {
1330 dev_err(&i2c->dev, "Failed to read chip ID: %d\n", ret);
1331 return ret;
1332 }
1333 if (reg != 0x9081) {
1334 dev_err(&i2c->dev, "Device is not a WM9081: ID=0x%x\n", reg);
1335 return -EINVAL;
1336 }
1337
1338 ret = wm9081_reset(wm9081->regmap);
1339 if (ret < 0) {
1340 dev_err(&i2c->dev, "Failed to issue reset\n");
1341 return ret;
1342 }
1343
1344 if (dev_get_platdata(&i2c->dev))
1345 memcpy(&wm9081->pdata, dev_get_platdata(&i2c->dev),
1346 sizeof(wm9081->pdata));
1347
1348 reg = 0;
1349 if (wm9081->pdata.irq_high)
1350 reg |= WM9081_IRQ_POL;
1351 if (!wm9081->pdata.irq_cmos)
1352 reg |= WM9081_IRQ_OP_CTRL;
1353 regmap_update_bits(wm9081->regmap, WM9081_INTERRUPT_CONTROL,
1354 WM9081_IRQ_POL | WM9081_IRQ_OP_CTRL, reg);
1355
1356 regcache_cache_only(wm9081->regmap, true);
1357
1358 ret = snd_soc_register_codec(&i2c->dev,
1359 &soc_codec_dev_wm9081, &wm9081_dai, 1);
1360 if (ret < 0)
1361 return ret;
1362
1363 return 0;
1364 }
1365
1366 static int wm9081_i2c_remove(struct i2c_client *client)
1367 {
1368 snd_soc_unregister_codec(&client->dev);
1369 return 0;
1370 }
1371
1372 static const struct i2c_device_id wm9081_i2c_id[] = {
1373 { "wm9081", 0 },
1374 { }
1375 };
1376 MODULE_DEVICE_TABLE(i2c, wm9081_i2c_id);
1377
1378 static struct i2c_driver wm9081_i2c_driver = {
1379 .driver = {
1380 .name = "wm9081",
1381 .owner = THIS_MODULE,
1382 },
1383 .probe = wm9081_i2c_probe,
1384 .remove = wm9081_i2c_remove,
1385 .id_table = wm9081_i2c_id,
1386 };
1387 #endif
1388
1389 module_i2c_driver(wm9081_i2c_driver);
1390
1391 MODULE_DESCRIPTION("ASoC WM9081 driver");
1392 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1393 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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