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x86/speculation/mds: Fix documentation typo
[linux/fpc-iii.git] / sound / soc / codecs / wm9081.c
blob6febef337dd23c033e67aa6d2d6e22ab2494091d
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 const 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 const DECLARE_TLV_DB_RANGE(drc_max_tlv,
247 0, 0, TLV_DB_SCALE_ITEM(1200, 0, 0),
248 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0),
249 2, 2, TLV_DB_SCALE_ITEM(2400, 0, 0),
250 3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0)
251 );
252 static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0);
253 static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -300, 50, 0);
254
255 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
256
257 static const DECLARE_TLV_DB_SCALE(in_tlv, -600, 600, 0);
258 static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1);
259 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
260
261 static const char *drc_high_text[] = {
262 "1",
263 "1/2",
264 "1/4",
265 "1/8",
266 "1/16",
267 "0",
268 };
269
270 static SOC_ENUM_SINGLE_DECL(drc_high, WM9081_DRC_3, 3, drc_high_text);
271
272 static const char *drc_low_text[] = {
273 "1",
274 "1/2",
275 "1/4",
276 "1/8",
277 "0",
278 };
279
280 static SOC_ENUM_SINGLE_DECL(drc_low, WM9081_DRC_3, 0, drc_low_text);
281
282 static const char *drc_atk_text[] = {
283 "181us",
284 "181us",
285 "363us",
286 "726us",
287 "1.45ms",
288 "2.9ms",
289 "5.8ms",
290 "11.6ms",
291 "23.2ms",
292 "46.4ms",
293 "92.8ms",
294 "185.6ms",
295 };
296
297 static SOC_ENUM_SINGLE_DECL(drc_atk, WM9081_DRC_2, 12, drc_atk_text);
298
299 static const char *drc_dcy_text[] = {
300 "186ms",
301 "372ms",
302 "743ms",
303 "1.49s",
304 "2.97s",
305 "5.94s",
306 "11.89s",
307 "23.78s",
308 "47.56s",
309 };
310
311 static SOC_ENUM_SINGLE_DECL(drc_dcy, WM9081_DRC_2, 8, drc_dcy_text);
312
313 static const char *drc_qr_dcy_text[] = {
314 "0.725ms",
315 "1.45ms",
316 "5.8ms",
317 };
318
319 static SOC_ENUM_SINGLE_DECL(drc_qr_dcy, WM9081_DRC_2, 4, drc_qr_dcy_text);
320
321 static const char *dac_deemph_text[] = {
322 "None",
323 "32kHz",
324 "44.1kHz",
325 "48kHz",
326 };
327
328 static SOC_ENUM_SINGLE_DECL(dac_deemph, WM9081_DAC_DIGITAL_2, 1,
329 dac_deemph_text);
330
331 static const char *speaker_mode_text[] = {
332 "Class D",
333 "Class AB",
334 };
335
336 static SOC_ENUM_SINGLE_DECL(speaker_mode, WM9081_ANALOGUE_SPEAKER_2, 6,
337 speaker_mode_text);
338
339 static int speaker_mode_get(struct snd_kcontrol *kcontrol,
340 struct snd_ctl_elem_value *ucontrol)
341 {
342 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
343 unsigned int reg;
344
345 reg = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2);
346 if (reg & WM9081_SPK_MODE)
347 ucontrol->value.enumerated.item[0] = 1;
348 else
349 ucontrol->value.enumerated.item[0] = 0;
350
351 return 0;
352 }
353
354 /*
355 * Stop any attempts to change speaker mode while the speaker is enabled.
356 *
357 * We also have some special anti-pop controls dependent on speaker
358 * mode which must be changed along with the mode.
359 */
360 static int speaker_mode_put(struct snd_kcontrol *kcontrol,
361 struct snd_ctl_elem_value *ucontrol)
362 {
363 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
364 unsigned int reg_pwr = snd_soc_read(codec, WM9081_POWER_MANAGEMENT);
365 unsigned int reg2 = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2);
366
367 /* Are we changing anything? */
368 if (ucontrol->value.enumerated.item[0] ==
369 ((reg2 & WM9081_SPK_MODE) != 0))
370 return 0;
371
372 /* Don't try to change modes while enabled */
373 if (reg_pwr & WM9081_SPK_ENA)
374 return -EINVAL;
375
376 if (ucontrol->value.enumerated.item[0]) {
377 /* Class AB */
378 reg2 &= ~(WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL);
379 reg2 |= WM9081_SPK_MODE;
380 } else {
381 /* Class D */
382 reg2 |= WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL;
383 reg2 &= ~WM9081_SPK_MODE;
384 }
385
386 snd_soc_write(codec, WM9081_ANALOGUE_SPEAKER_2, reg2);
387
388 return 0;
389 }
390
391 static const struct snd_kcontrol_new wm9081_snd_controls[] = {
392 SOC_SINGLE_TLV("IN1 Volume", WM9081_ANALOGUE_MIXER, 1, 1, 1, in_tlv),
393 SOC_SINGLE_TLV("IN2 Volume", WM9081_ANALOGUE_MIXER, 3, 1, 1, in_tlv),
394
395 SOC_SINGLE_TLV("Playback Volume", WM9081_DAC_DIGITAL_1, 1, 96, 0, dac_tlv),
396
397 SOC_SINGLE("LINEOUT Switch", WM9081_ANALOGUE_LINEOUT, 7, 1, 1),
398 SOC_SINGLE("LINEOUT ZC Switch", WM9081_ANALOGUE_LINEOUT, 6, 1, 0),
399 SOC_SINGLE_TLV("LINEOUT Volume", WM9081_ANALOGUE_LINEOUT, 0, 63, 0, out_tlv),
400
401 SOC_SINGLE("DRC Switch", WM9081_DRC_1, 15, 1, 0),
402 SOC_ENUM("DRC High Slope", drc_high),
403 SOC_ENUM("DRC Low Slope", drc_low),
404 SOC_SINGLE_TLV("DRC Input Volume", WM9081_DRC_4, 5, 60, 1, drc_in_tlv),
405 SOC_SINGLE_TLV("DRC Output Volume", WM9081_DRC_4, 0, 30, 1, drc_out_tlv),
406 SOC_SINGLE_TLV("DRC Minimum Volume", WM9081_DRC_2, 2, 3, 1, drc_min_tlv),
407 SOC_SINGLE_TLV("DRC Maximum Volume", WM9081_DRC_2, 0, 3, 0, drc_max_tlv),
408 SOC_ENUM("DRC Attack", drc_atk),
409 SOC_ENUM("DRC Decay", drc_dcy),
410 SOC_SINGLE("DRC Quick Release Switch", WM9081_DRC_1, 2, 1, 0),
411 SOC_SINGLE_TLV("DRC Quick Release Volume", WM9081_DRC_2, 6, 3, 0, drc_qr_tlv),
412 SOC_ENUM("DRC Quick Release Decay", drc_qr_dcy),
413 SOC_SINGLE_TLV("DRC Startup Volume", WM9081_DRC_1, 6, 18, 0, drc_startup_tlv),
414
415 SOC_SINGLE("EQ Switch", WM9081_EQ_1, 0, 1, 0),
416
417 SOC_SINGLE("Speaker DC Volume", WM9081_ANALOGUE_SPEAKER_1, 3, 5, 0),
418 SOC_SINGLE("Speaker AC Volume", WM9081_ANALOGUE_SPEAKER_1, 0, 5, 0),
419 SOC_SINGLE("Speaker Switch", WM9081_ANALOGUE_SPEAKER_PGA, 7, 1, 1),
420 SOC_SINGLE("Speaker ZC Switch", WM9081_ANALOGUE_SPEAKER_PGA, 6, 1, 0),
421 SOC_SINGLE_TLV("Speaker Volume", WM9081_ANALOGUE_SPEAKER_PGA, 0, 63, 0,
422 out_tlv),
423 SOC_ENUM("DAC Deemphasis", dac_deemph),
424 SOC_ENUM_EXT("Speaker Mode", speaker_mode, speaker_mode_get, speaker_mode_put),
425 };
426
427 static const struct snd_kcontrol_new wm9081_eq_controls[] = {
428 SOC_SINGLE_TLV("EQ1 Volume", WM9081_EQ_1, 11, 24, 0, eq_tlv),
429 SOC_SINGLE_TLV("EQ2 Volume", WM9081_EQ_1, 6, 24, 0, eq_tlv),
430 SOC_SINGLE_TLV("EQ3 Volume", WM9081_EQ_1, 1, 24, 0, eq_tlv),
431 SOC_SINGLE_TLV("EQ4 Volume", WM9081_EQ_2, 11, 24, 0, eq_tlv),
432 SOC_SINGLE_TLV("EQ5 Volume", WM9081_EQ_2, 6, 24, 0, eq_tlv),
433 };
434
435 static const struct snd_kcontrol_new mixer[] = {
436 SOC_DAPM_SINGLE("IN1 Switch", WM9081_ANALOGUE_MIXER, 0, 1, 0),
437 SOC_DAPM_SINGLE("IN2 Switch", WM9081_ANALOGUE_MIXER, 2, 1, 0),
438 SOC_DAPM_SINGLE("Playback Switch", WM9081_ANALOGUE_MIXER, 4, 1, 0),
439 };
440
441 struct _fll_div {
442 u16 fll_fratio;
443 u16 fll_outdiv;
444 u16 fll_clk_ref_div;
445 u16 n;
446 u16 k;
447 };
448
449 /* The size in bits of the FLL divide multiplied by 10
450 * to allow rounding later */
451 #define FIXED_FLL_SIZE ((1 << 16) * 10)
452
453 static struct {
454 unsigned int min;
455 unsigned int max;
456 u16 fll_fratio;
457 int ratio;
458 } fll_fratios[] = {
459 { 0, 64000, 4, 16 },
460 { 64000, 128000, 3, 8 },
461 { 128000, 256000, 2, 4 },
462 { 256000, 1000000, 1, 2 },
463 { 1000000, 13500000, 0, 1 },
464 };
465
466 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
467 unsigned int Fout)
468 {
469 u64 Kpart;
470 unsigned int K, Ndiv, Nmod, target;
471 unsigned int div;
472 int i;
473
474 /* Fref must be <=13.5MHz */
475 div = 1;
476 while ((Fref / div) > 13500000) {
477 div *= 2;
478
479 if (div > 8) {
480 pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
481 Fref);
482 return -EINVAL;
483 }
484 }
485 fll_div->fll_clk_ref_div = div / 2;
486
487 pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
488
489 /* Apply the division for our remaining calculations */
490 Fref /= div;
491
492 /* Fvco should be 90-100MHz; don't check the upper bound */
493 div = 0;
494 target = Fout * 2;
495 while (target < 90000000) {
496 div++;
497 target *= 2;
498 if (div > 7) {
499 pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
500 Fout);
501 return -EINVAL;
502 }
503 }
504 fll_div->fll_outdiv = div;
505
506 pr_debug("Fvco=%dHz\n", target);
507
508 /* Find an appropriate FLL_FRATIO and factor it out of the target */
509 for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
510 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
511 fll_div->fll_fratio = fll_fratios[i].fll_fratio;
512 target /= fll_fratios[i].ratio;
513 break;
514 }
515 }
516 if (i == ARRAY_SIZE(fll_fratios)) {
517 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
518 return -EINVAL;
519 }
520
521 /* Now, calculate N.K */
522 Ndiv = target / Fref;
523
524 fll_div->n = Ndiv;
525 Nmod = target % Fref;
526 pr_debug("Nmod=%d\n", Nmod);
527
528 /* Calculate fractional part - scale up so we can round. */
529 Kpart = FIXED_FLL_SIZE * (long long)Nmod;
530
531 do_div(Kpart, Fref);
532
533 K = Kpart & 0xFFFFFFFF;
534
535 if ((K % 10) >= 5)
536 K += 5;
537
538 /* Move down to proper range now rounding is done */
539 fll_div->k = K / 10;
540
541 pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
542 fll_div->n, fll_div->k,
543 fll_div->fll_fratio, fll_div->fll_outdiv,
544 fll_div->fll_clk_ref_div);
545
546 return 0;
547 }
548
549 static int wm9081_set_fll(struct snd_soc_codec *codec, int fll_id,
550 unsigned int Fref, unsigned int Fout)
551 {
552 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
553 u16 reg1, reg4, reg5;
554 struct _fll_div fll_div;
555 int ret;
556 int clk_sys_reg;
557
558 /* Any change? */
559 if (Fref == wm9081->fll_fref && Fout == wm9081->fll_fout)
560 return 0;
561
562 /* Disable the FLL */
563 if (Fout == 0) {
564 dev_dbg(codec->dev, "FLL disabled\n");
565 wm9081->fll_fref = 0;
566 wm9081->fll_fout = 0;
567
568 return 0;
569 }
570
571 ret = fll_factors(&fll_div, Fref, Fout);
572 if (ret != 0)
573 return ret;
574
575 reg5 = snd_soc_read(codec, WM9081_FLL_CONTROL_5);
576 reg5 &= ~WM9081_FLL_CLK_SRC_MASK;
577
578 switch (fll_id) {
579 case WM9081_SYSCLK_FLL_MCLK:
580 reg5 |= 0x1;
581 break;
582
583 default:
584 dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
585 return -EINVAL;
586 }
587
588 /* Disable CLK_SYS while we reconfigure */
589 clk_sys_reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3);
590 if (clk_sys_reg & WM9081_CLK_SYS_ENA)
591 snd_soc_write(codec, WM9081_CLOCK_CONTROL_3,
592 clk_sys_reg & ~WM9081_CLK_SYS_ENA);
593
594 /* Any FLL configuration change requires that the FLL be
595 * disabled first. */
596 reg1 = snd_soc_read(codec, WM9081_FLL_CONTROL_1);
597 reg1 &= ~WM9081_FLL_ENA;
598 snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1);
599
600 /* Apply the configuration */
601 if (fll_div.k)
602 reg1 |= WM9081_FLL_FRAC_MASK;
603 else
604 reg1 &= ~WM9081_FLL_FRAC_MASK;
605 snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1);
606
607 snd_soc_write(codec, WM9081_FLL_CONTROL_2,
608 (fll_div.fll_outdiv << WM9081_FLL_OUTDIV_SHIFT) |
609 (fll_div.fll_fratio << WM9081_FLL_FRATIO_SHIFT));
610 snd_soc_write(codec, WM9081_FLL_CONTROL_3, fll_div.k);
611
612 reg4 = snd_soc_read(codec, WM9081_FLL_CONTROL_4);
613 reg4 &= ~WM9081_FLL_N_MASK;
614 reg4 |= fll_div.n << WM9081_FLL_N_SHIFT;
615 snd_soc_write(codec, WM9081_FLL_CONTROL_4, reg4);
616
617 reg5 &= ~WM9081_FLL_CLK_REF_DIV_MASK;
618 reg5 |= fll_div.fll_clk_ref_div << WM9081_FLL_CLK_REF_DIV_SHIFT;
619 snd_soc_write(codec, WM9081_FLL_CONTROL_5, reg5);
620
621 /* Set gain to the recommended value */
622 snd_soc_update_bits(codec, WM9081_FLL_CONTROL_4,
623 WM9081_FLL_GAIN_MASK, 0);
624
625 /* Enable the FLL */
626 snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1 | WM9081_FLL_ENA);
627
628 /* Then bring CLK_SYS up again if it was disabled */
629 if (clk_sys_reg & WM9081_CLK_SYS_ENA)
630 snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, clk_sys_reg);
631
632 dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
633
634 wm9081->fll_fref = Fref;
635 wm9081->fll_fout = Fout;
636
637 return 0;
638 }
639
640 static int configure_clock(struct snd_soc_codec *codec)
641 {
642 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
643 int new_sysclk, i, target;
644 unsigned int reg;
645 int ret = 0;
646 int mclkdiv = 0;
647 int fll = 0;
648
649 switch (wm9081->sysclk_source) {
650 case WM9081_SYSCLK_MCLK:
651 if (wm9081->mclk_rate > 12225000) {
652 mclkdiv = 1;
653 wm9081->sysclk_rate = wm9081->mclk_rate / 2;
654 } else {
655 wm9081->sysclk_rate = wm9081->mclk_rate;
656 }
657 wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK, 0, 0);
658 break;
659
660 case WM9081_SYSCLK_FLL_MCLK:
661 /* If we have a sample rate calculate a CLK_SYS that
662 * gives us a suitable DAC configuration, plus BCLK.
663 * Ideally we would check to see if we can clock
664 * directly from MCLK and only use the FLL if this is
665 * not the case, though care must be taken with free
666 * running mode.
667 */
668 if (wm9081->master && wm9081->bclk) {
669 /* Make sure we can generate CLK_SYS and BCLK
670 * and that we've got 3MHz for optimal
671 * performance. */
672 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
673 target = wm9081->fs * clk_sys_rates[i].ratio;
674 new_sysclk = target;
675 if (target >= wm9081->bclk &&
676 target > 3000000)
677 break;
678 }
679
680 if (i == ARRAY_SIZE(clk_sys_rates))
681 return -EINVAL;
682
683 } else if (wm9081->fs) {
684 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
685 new_sysclk = clk_sys_rates[i].ratio
686 * wm9081->fs;
687 if (new_sysclk > 3000000)
688 break;
689 }
690
691 if (i == ARRAY_SIZE(clk_sys_rates))
692 return -EINVAL;
693
694 } else {
695 new_sysclk = 12288000;
696 }
697
698 ret = wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK,
699 wm9081->mclk_rate, new_sysclk);
700 if (ret == 0) {
701 wm9081->sysclk_rate = new_sysclk;
702
703 /* Switch SYSCLK over to FLL */
704 fll = 1;
705 } else {
706 wm9081->sysclk_rate = wm9081->mclk_rate;
707 }
708 break;
709
710 default:
711 return -EINVAL;
712 }
713
714 reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_1);
715 if (mclkdiv)
716 reg |= WM9081_MCLKDIV2;
717 else
718 reg &= ~WM9081_MCLKDIV2;
719 snd_soc_write(codec, WM9081_CLOCK_CONTROL_1, reg);
720
721 reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3);
722 if (fll)
723 reg |= WM9081_CLK_SRC_SEL;
724 else
725 reg &= ~WM9081_CLK_SRC_SEL;
726 snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, reg);
727
728 dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm9081->sysclk_rate);
729
730 return ret;
731 }
732
733 static int clk_sys_event(struct snd_soc_dapm_widget *w,
734 struct snd_kcontrol *kcontrol, int event)
735 {
736 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
737 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
738
739 /* This should be done on init() for bypass paths */
740 switch (wm9081->sysclk_source) {
741 case WM9081_SYSCLK_MCLK:
742 dev_dbg(codec->dev, "Using %dHz MCLK\n", wm9081->mclk_rate);
743 break;
744 case WM9081_SYSCLK_FLL_MCLK:
745 dev_dbg(codec->dev, "Using %dHz MCLK with FLL\n",
746 wm9081->mclk_rate);
747 break;
748 default:
749 dev_err(codec->dev, "System clock not configured\n");
750 return -EINVAL;
751 }
752
753 switch (event) {
754 case SND_SOC_DAPM_PRE_PMU:
755 configure_clock(codec);
756 break;
757
758 case SND_SOC_DAPM_POST_PMD:
759 /* Disable the FLL if it's running */
760 wm9081_set_fll(codec, 0, 0, 0);
761 break;
762 }
763
764 return 0;
765 }
766
767 static const struct snd_soc_dapm_widget wm9081_dapm_widgets[] = {
768 SND_SOC_DAPM_INPUT("IN1"),
769 SND_SOC_DAPM_INPUT("IN2"),
770
771 SND_SOC_DAPM_DAC("DAC", NULL, WM9081_POWER_MANAGEMENT, 0, 0),
772
773 SND_SOC_DAPM_MIXER_NAMED_CTL("Mixer", SND_SOC_NOPM, 0, 0,
774 mixer, ARRAY_SIZE(mixer)),
775
776 SND_SOC_DAPM_PGA("LINEOUT PGA", WM9081_POWER_MANAGEMENT, 4, 0, NULL, 0),
777
778 SND_SOC_DAPM_PGA("Speaker PGA", WM9081_POWER_MANAGEMENT, 2, 0, NULL, 0),
779 SND_SOC_DAPM_OUT_DRV("Speaker", WM9081_POWER_MANAGEMENT, 1, 0, NULL, 0),
780
781 SND_SOC_DAPM_OUTPUT("LINEOUT"),
782 SND_SOC_DAPM_OUTPUT("SPKN"),
783 SND_SOC_DAPM_OUTPUT("SPKP"),
784
785 SND_SOC_DAPM_SUPPLY("CLK_SYS", WM9081_CLOCK_CONTROL_3, 0, 0, clk_sys_event,
786 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
787 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM9081_CLOCK_CONTROL_3, 1, 0, NULL, 0),
788 SND_SOC_DAPM_SUPPLY("TOCLK", WM9081_CLOCK_CONTROL_3, 2, 0, NULL, 0),
789 SND_SOC_DAPM_SUPPLY("TSENSE", WM9081_POWER_MANAGEMENT, 7, 0, NULL, 0),
790 };
791
792
793 static const struct snd_soc_dapm_route wm9081_audio_paths[] = {
794 { "DAC", NULL, "CLK_SYS" },
795 { "DAC", NULL, "CLK_DSP" },
796 { "DAC", NULL, "AIF" },
797
798 { "Mixer", "IN1 Switch", "IN1" },
799 { "Mixer", "IN2 Switch", "IN2" },
800 { "Mixer", "Playback Switch", "DAC" },
801
802 { "LINEOUT PGA", NULL, "Mixer" },
803 { "LINEOUT PGA", NULL, "TOCLK" },
804 { "LINEOUT PGA", NULL, "CLK_SYS" },
805
806 { "LINEOUT", NULL, "LINEOUT PGA" },
807
808 { "Speaker PGA", NULL, "Mixer" },
809 { "Speaker PGA", NULL, "TOCLK" },
810 { "Speaker PGA", NULL, "CLK_SYS" },
811
812 { "Speaker", NULL, "Speaker PGA" },
813 { "Speaker", NULL, "TSENSE" },
814
815 { "SPKN", NULL, "Speaker" },
816 { "SPKP", NULL, "Speaker" },
817 };
818
819 static int wm9081_set_bias_level(struct snd_soc_codec *codec,
820 enum snd_soc_bias_level level)
821 {
822 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
823
824 switch (level) {
825 case SND_SOC_BIAS_ON:
826 break;
827
828 case SND_SOC_BIAS_PREPARE:
829 /* VMID=2*40k */
830 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
831 WM9081_VMID_SEL_MASK, 0x2);
832
833 /* Normal bias current */
834 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
835 WM9081_STBY_BIAS_ENA, 0);
836 break;
837
838 case SND_SOC_BIAS_STANDBY:
839 /* Initial cold start */
840 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
841 regcache_cache_only(wm9081->regmap, false);
842 regcache_sync(wm9081->regmap);
843
844 /* Disable LINEOUT discharge */
845 snd_soc_update_bits(codec, WM9081_ANTI_POP_CONTROL,
846 WM9081_LINEOUT_DISCH, 0);
847
848 /* Select startup bias source */
849 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
850 WM9081_BIAS_SRC | WM9081_BIAS_ENA,
851 WM9081_BIAS_SRC | WM9081_BIAS_ENA);
852
853 /* VMID 2*4k; Soft VMID ramp enable */
854 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
855 WM9081_VMID_RAMP |
856 WM9081_VMID_SEL_MASK,
857 WM9081_VMID_RAMP | 0x6);
858
859 mdelay(100);
860
861 /* Normal bias enable & soft start off */
862 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
863 WM9081_VMID_RAMP, 0);
864
865 /* Standard bias source */
866 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
867 WM9081_BIAS_SRC, 0);
868 }
869
870 /* VMID 2*240k */
871 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
872 WM9081_VMID_SEL_MASK, 0x04);
873
874 /* Standby bias current on */
875 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
876 WM9081_STBY_BIAS_ENA,
877 WM9081_STBY_BIAS_ENA);
878 break;
879
880 case SND_SOC_BIAS_OFF:
881 /* Startup bias source and disable bias */
882 snd_soc_update_bits(codec, WM9081_BIAS_CONTROL_1,
883 WM9081_BIAS_SRC | WM9081_BIAS_ENA,
884 WM9081_BIAS_SRC);
885
886 /* Disable VMID with soft ramping */
887 snd_soc_update_bits(codec, WM9081_VMID_CONTROL,
888 WM9081_VMID_RAMP | WM9081_VMID_SEL_MASK,
889 WM9081_VMID_RAMP);
890
891 /* Actively discharge LINEOUT */
892 snd_soc_update_bits(codec, WM9081_ANTI_POP_CONTROL,
893 WM9081_LINEOUT_DISCH,
894 WM9081_LINEOUT_DISCH);
895
896 regcache_cache_only(wm9081->regmap, true);
897 break;
898 }
899
900 return 0;
901 }
902
903 static int wm9081_set_dai_fmt(struct snd_soc_dai *dai,
904 unsigned int fmt)
905 {
906 struct snd_soc_codec *codec = dai->codec;
907 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
908 unsigned int aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2);
909
910 aif2 &= ~(WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV |
911 WM9081_BCLK_DIR | WM9081_LRCLK_DIR | WM9081_AIF_FMT_MASK);
912
913 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
914 case SND_SOC_DAIFMT_CBS_CFS:
915 wm9081->master = 0;
916 break;
917 case SND_SOC_DAIFMT_CBS_CFM:
918 aif2 |= WM9081_LRCLK_DIR;
919 wm9081->master = 1;
920 break;
921 case SND_SOC_DAIFMT_CBM_CFS:
922 aif2 |= WM9081_BCLK_DIR;
923 wm9081->master = 1;
924 break;
925 case SND_SOC_DAIFMT_CBM_CFM:
926 aif2 |= WM9081_LRCLK_DIR | WM9081_BCLK_DIR;
927 wm9081->master = 1;
928 break;
929 default:
930 return -EINVAL;
931 }
932
933 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
934 case SND_SOC_DAIFMT_DSP_B:
935 aif2 |= WM9081_AIF_LRCLK_INV;
936 case SND_SOC_DAIFMT_DSP_A:
937 aif2 |= 0x3;
938 break;
939 case SND_SOC_DAIFMT_I2S:
940 aif2 |= 0x2;
941 break;
942 case SND_SOC_DAIFMT_RIGHT_J:
943 break;
944 case SND_SOC_DAIFMT_LEFT_J:
945 aif2 |= 0x1;
946 break;
947 default:
948 return -EINVAL;
949 }
950
951 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
952 case SND_SOC_DAIFMT_DSP_A:
953 case SND_SOC_DAIFMT_DSP_B:
954 /* frame inversion not valid for DSP modes */
955 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
956 case SND_SOC_DAIFMT_NB_NF:
957 break;
958 case SND_SOC_DAIFMT_IB_NF:
959 aif2 |= WM9081_AIF_BCLK_INV;
960 break;
961 default:
962 return -EINVAL;
963 }
964 break;
965
966 case SND_SOC_DAIFMT_I2S:
967 case SND_SOC_DAIFMT_RIGHT_J:
968 case SND_SOC_DAIFMT_LEFT_J:
969 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
970 case SND_SOC_DAIFMT_NB_NF:
971 break;
972 case SND_SOC_DAIFMT_IB_IF:
973 aif2 |= WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV;
974 break;
975 case SND_SOC_DAIFMT_IB_NF:
976 aif2 |= WM9081_AIF_BCLK_INV;
977 break;
978 case SND_SOC_DAIFMT_NB_IF:
979 aif2 |= WM9081_AIF_LRCLK_INV;
980 break;
981 default:
982 return -EINVAL;
983 }
984 break;
985 default:
986 return -EINVAL;
987 }
988
989 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2);
990
991 return 0;
992 }
993
994 static int wm9081_hw_params(struct snd_pcm_substream *substream,
995 struct snd_pcm_hw_params *params,
996 struct snd_soc_dai *dai)
997 {
998 struct snd_soc_codec *codec = dai->codec;
999 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
1000 int ret, i, best, best_val, cur_val;
1001 unsigned int clk_ctrl2, aif1, aif2, aif3, aif4;
1002
1003 clk_ctrl2 = snd_soc_read(codec, WM9081_CLOCK_CONTROL_2);
1004 clk_ctrl2 &= ~(WM9081_CLK_SYS_RATE_MASK | WM9081_SAMPLE_RATE_MASK);
1005
1006 aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1);
1007
1008 aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2);
1009 aif2 &= ~WM9081_AIF_WL_MASK;
1010
1011 aif3 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_3);
1012 aif3 &= ~WM9081_BCLK_DIV_MASK;
1013
1014 aif4 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_4);
1015 aif4 &= ~WM9081_LRCLK_RATE_MASK;
1016
1017 wm9081->fs = params_rate(params);
1018
1019 if (wm9081->tdm_width) {
1020 /* If TDM is set up then that fixes our BCLK. */
1021 int slots = ((aif1 & WM9081_AIFDAC_TDM_MODE_MASK) >>
1022 WM9081_AIFDAC_TDM_MODE_SHIFT) + 1;
1023
1024 wm9081->bclk = wm9081->fs * wm9081->tdm_width * slots;
1025 } else {
1026 /* Otherwise work out a BCLK from the sample size */
1027 wm9081->bclk = 2 * wm9081->fs;
1028
1029 switch (params_width(params)) {
1030 case 16:
1031 wm9081->bclk *= 16;
1032 break;
1033 case 20:
1034 wm9081->bclk *= 20;
1035 aif2 |= 0x4;
1036 break;
1037 case 24:
1038 wm9081->bclk *= 24;
1039 aif2 |= 0x8;
1040 break;
1041 case 32:
1042 wm9081->bclk *= 32;
1043 aif2 |= 0xc;
1044 break;
1045 default:
1046 return -EINVAL;
1047 }
1048 }
1049
1050 dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm9081->bclk);
1051
1052 ret = configure_clock(codec);
1053 if (ret != 0)
1054 return ret;
1055
1056 /* Select nearest CLK_SYS_RATE */
1057 best = 0;
1058 best_val = abs((wm9081->sysclk_rate / clk_sys_rates[0].ratio)
1059 - wm9081->fs);
1060 for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1061 cur_val = abs((wm9081->sysclk_rate /
1062 clk_sys_rates[i].ratio) - wm9081->fs);
1063 if (cur_val < best_val) {
1064 best = i;
1065 best_val = cur_val;
1066 }
1067 }
1068 dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
1069 clk_sys_rates[best].ratio);
1070 clk_ctrl2 |= (clk_sys_rates[best].clk_sys_rate
1071 << WM9081_CLK_SYS_RATE_SHIFT);
1072
1073 /* SAMPLE_RATE */
1074 best = 0;
1075 best_val = abs(wm9081->fs - sample_rates[0].rate);
1076 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1077 /* Closest match */
1078 cur_val = abs(wm9081->fs - sample_rates[i].rate);
1079 if (cur_val < best_val) {
1080 best = i;
1081 best_val = cur_val;
1082 }
1083 }
1084 dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
1085 sample_rates[best].rate);
1086 clk_ctrl2 |= (sample_rates[best].sample_rate
1087 << WM9081_SAMPLE_RATE_SHIFT);
1088
1089 /* BCLK_DIV */
1090 best = 0;
1091 best_val = INT_MAX;
1092 for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1093 cur_val = ((wm9081->sysclk_rate * 10) / bclk_divs[i].div)
1094 - wm9081->bclk;
1095 if (cur_val < 0) /* Table is sorted */
1096 break;
1097 if (cur_val < best_val) {
1098 best = i;
1099 best_val = cur_val;
1100 }
1101 }
1102 wm9081->bclk = (wm9081->sysclk_rate * 10) / bclk_divs[best].div;
1103 dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1104 bclk_divs[best].div, wm9081->bclk);
1105 aif3 |= bclk_divs[best].bclk_div;
1106
1107 /* LRCLK is a simple fraction of BCLK */
1108 dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm9081->bclk / wm9081->fs);
1109 aif4 |= wm9081->bclk / wm9081->fs;
1110
1111 /* Apply a ReTune Mobile configuration if it's in use */
1112 if (wm9081->pdata.num_retune_configs) {
1113 struct wm9081_pdata *pdata = &wm9081->pdata;
1114 struct wm9081_retune_mobile_setting *s;
1115 int eq1;
1116
1117 best = 0;
1118 best_val = abs(pdata->retune_configs[0].rate - wm9081->fs);
1119 for (i = 0; i < pdata->num_retune_configs; i++) {
1120 cur_val = abs(pdata->retune_configs[i].rate -
1121 wm9081->fs);
1122 if (cur_val < best_val) {
1123 best_val = cur_val;
1124 best = i;
1125 }
1126 }
1127 s = &pdata->retune_configs[best];
1128
1129 dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n",
1130 s->name, s->rate);
1131
1132 /* If the EQ is enabled then disable it while we write out */
1133 eq1 = snd_soc_read(codec, WM9081_EQ_1) & WM9081_EQ_ENA;
1134 if (eq1 & WM9081_EQ_ENA)
1135 snd_soc_write(codec, WM9081_EQ_1, 0);
1136
1137 /* Write out the other values */
1138 for (i = 1; i < ARRAY_SIZE(s->config); i++)
1139 snd_soc_write(codec, WM9081_EQ_1 + i, s->config[i]);
1140
1141 eq1 |= (s->config[0] & ~WM9081_EQ_ENA);
1142 snd_soc_write(codec, WM9081_EQ_1, eq1);
1143 }
1144
1145 snd_soc_write(codec, WM9081_CLOCK_CONTROL_2, clk_ctrl2);
1146 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2);
1147 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_3, aif3);
1148 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_4, aif4);
1149
1150 return 0;
1151 }
1152
1153 static int wm9081_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1154 {
1155 struct snd_soc_codec *codec = codec_dai->codec;
1156 unsigned int reg;
1157
1158 reg = snd_soc_read(codec, WM9081_DAC_DIGITAL_2);
1159
1160 if (mute)
1161 reg |= WM9081_DAC_MUTE;
1162 else
1163 reg &= ~WM9081_DAC_MUTE;
1164
1165 snd_soc_write(codec, WM9081_DAC_DIGITAL_2, reg);
1166
1167 return 0;
1168 }
1169
1170 static int wm9081_set_sysclk(struct snd_soc_codec *codec, int clk_id,
1171 int source, unsigned int freq, int dir)
1172 {
1173 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
1174
1175 switch (clk_id) {
1176 case WM9081_SYSCLK_MCLK:
1177 case WM9081_SYSCLK_FLL_MCLK:
1178 wm9081->sysclk_source = clk_id;
1179 wm9081->mclk_rate = freq;
1180 break;
1181
1182 default:
1183 return -EINVAL;
1184 }
1185
1186 return 0;
1187 }
1188
1189 static int wm9081_set_tdm_slot(struct snd_soc_dai *dai,
1190 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
1191 {
1192 struct snd_soc_codec *codec = dai->codec;
1193 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
1194 unsigned int aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1);
1195
1196 aif1 &= ~(WM9081_AIFDAC_TDM_SLOT_MASK | WM9081_AIFDAC_TDM_MODE_MASK);
1197
1198 if (slots < 0 || slots > 4)
1199 return -EINVAL;
1200
1201 wm9081->tdm_width = slot_width;
1202
1203 if (slots == 0)
1204 slots = 1;
1205
1206 aif1 |= (slots - 1) << WM9081_AIFDAC_TDM_MODE_SHIFT;
1207
1208 switch (rx_mask) {
1209 case 1:
1210 break;
1211 case 2:
1212 aif1 |= 0x10;
1213 break;
1214 case 4:
1215 aif1 |= 0x20;
1216 break;
1217 case 8:
1218 aif1 |= 0x30;
1219 break;
1220 default:
1221 return -EINVAL;
1222 }
1223
1224 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_1, aif1);
1225
1226 return 0;
1227 }
1228
1229 #define WM9081_RATES SNDRV_PCM_RATE_8000_96000
1230
1231 #define WM9081_FORMATS \
1232 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
1233 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
1234
1235 static const struct snd_soc_dai_ops wm9081_dai_ops = {
1236 .hw_params = wm9081_hw_params,
1237 .set_fmt = wm9081_set_dai_fmt,
1238 .digital_mute = wm9081_digital_mute,
1239 .set_tdm_slot = wm9081_set_tdm_slot,
1240 };
1241
1242 /* We report two channels because the CODEC processes a stereo signal, even
1243 * though it is only capable of handling a mono output.
1244 */
1245 static struct snd_soc_dai_driver wm9081_dai = {
1246 .name = "wm9081-hifi",
1247 .playback = {
1248 .stream_name = "AIF",
1249 .channels_min = 1,
1250 .channels_max = 2,
1251 .rates = WM9081_RATES,
1252 .formats = WM9081_FORMATS,
1253 },
1254 .ops = &wm9081_dai_ops,
1255 };
1256
1257 static int wm9081_probe(struct snd_soc_codec *codec)
1258 {
1259 struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);
1260
1261 /* Enable zero cross by default */
1262 snd_soc_update_bits(codec, WM9081_ANALOGUE_LINEOUT,
1263 WM9081_LINEOUTZC, WM9081_LINEOUTZC);
1264 snd_soc_update_bits(codec, WM9081_ANALOGUE_SPEAKER_PGA,
1265 WM9081_SPKPGAZC, WM9081_SPKPGAZC);
1266
1267 if (!wm9081->pdata.num_retune_configs) {
1268 dev_dbg(codec->dev,
1269 "No ReTune Mobile data, using normal EQ\n");
1270 snd_soc_add_codec_controls(codec, wm9081_eq_controls,
1271 ARRAY_SIZE(wm9081_eq_controls));
1272 }
1273
1274 return 0;
1275 }
1276
1277 static const struct snd_soc_codec_driver soc_codec_dev_wm9081 = {
1278 .probe = wm9081_probe,
1279
1280 .set_sysclk = wm9081_set_sysclk,
1281 .set_bias_level = wm9081_set_bias_level,
1282
1283 .idle_bias_off = true,
1284
1285 .component_driver = {
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
1295 static const struct regmap_config wm9081_regmap = {
1296 .reg_bits = 8,
1297 .val_bits = 16,
1298
1299 .max_register = WM9081_MAX_REGISTER,
1300 .reg_defaults = wm9081_reg,
1301 .num_reg_defaults = ARRAY_SIZE(wm9081_reg),
1302 .volatile_reg = wm9081_volatile_register,
1303 .readable_reg = wm9081_readable_register,
1304 .cache_type = REGCACHE_RBTREE,
1305 };
1306
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 },
1382 .probe = wm9081_i2c_probe,
1383 .remove = wm9081_i2c_remove,
1384 .id_table = wm9081_i2c_id,
1385 };
1386
1387 module_i2c_driver(wm9081_i2c_driver);
1388
1389 MODULE_DESCRIPTION("ASoC WM9081 driver");
1390 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1391 MODULE_LICENSE("GPL");
Linux with added FPC-III support