/sound/soc/codecs/wm9081.c
C | 1485 lines | 1159 code | 245 blank | 81 comment | 106 complexity | 62b8fdb8c3ed75b75f01bac315755d20 MD5 | raw file
Possible License(s): CC-BY-SA-3.0, GPL-2.0, LGPL-2.0, AGPL-1.0
1/*
2 * wm9081.c -- WM9081 ALSA SoC Audio driver
3 *
4 * Author: Mark Brown
5 *
6 * Copyright 2009 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/pm.h>
19#include <linux/i2c.h>
20#include <linux/platform_device.h>
21#include <linux/slab.h>
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26#include <sound/soc-dapm.h>
27#include <sound/initval.h>
28#include <sound/tlv.h>
29
30#include <sound/wm9081.h>
31#include "wm9081.h"
32
33static u16 wm9081_reg_defaults[] = {
34 0x0000, /* R0 - Software Reset */
35 0x0000, /* R1 */
36 0x00B9, /* R2 - Analogue Lineout */
37 0x00B9, /* R3 - Analogue Speaker PGA */
38 0x0001, /* R4 - VMID Control */
39 0x0068, /* R5 - Bias Control 1 */
40 0x0000, /* R6 */
41 0x0000, /* R7 - Analogue Mixer */
42 0x0000, /* R8 - Anti Pop Control */
43 0x01DB, /* R9 - Analogue Speaker 1 */
44 0x0018, /* R10 - Analogue Speaker 2 */
45 0x0180, /* R11 - Power Management */
46 0x0000, /* R12 - Clock Control 1 */
47 0x0038, /* R13 - Clock Control 2 */
48 0x4000, /* R14 - Clock Control 3 */
49 0x0000, /* R15 */
50 0x0000, /* R16 - FLL Control 1 */
51 0x0200, /* R17 - FLL Control 2 */
52 0x0000, /* R18 - FLL Control 3 */
53 0x0204, /* R19 - FLL Control 4 */
54 0x0000, /* R20 - FLL Control 5 */
55 0x0000, /* R21 */
56 0x0000, /* R22 - Audio Interface 1 */
57 0x0002, /* R23 - Audio Interface 2 */
58 0x0008, /* R24 - Audio Interface 3 */
59 0x0022, /* R25 - Audio Interface 4 */
60 0x0000, /* R26 - Interrupt Status */
61 0x0006, /* R27 - Interrupt Status Mask */
62 0x0000, /* R28 - Interrupt Polarity */
63 0x0000, /* R29 - Interrupt Control */
64 0x00C0, /* R30 - DAC Digital 1 */
65 0x0008, /* R31 - DAC Digital 2 */
66 0x09AF, /* R32 - DRC 1 */
67 0x4201, /* R33 - DRC 2 */
68 0x0000, /* R34 - DRC 3 */
69 0x0000, /* R35 - DRC 4 */
70 0x0000, /* R36 */
71 0x0000, /* R37 */
72 0x0000, /* R38 - Write Sequencer 1 */
73 0x0000, /* R39 - Write Sequencer 2 */
74 0x0002, /* R40 - MW Slave 1 */
75 0x0000, /* R41 */
76 0x0000, /* R42 - EQ 1 */
77 0x0000, /* R43 - EQ 2 */
78 0x0FCA, /* R44 - EQ 3 */
79 0x0400, /* R45 - EQ 4 */
80 0x00B8, /* R46 - EQ 5 */
81 0x1EB5, /* R47 - EQ 6 */
82 0xF145, /* R48 - EQ 7 */
83 0x0B75, /* R49 - EQ 8 */
84 0x01C5, /* R50 - EQ 9 */
85 0x169E, /* R51 - EQ 10 */
86 0xF829, /* R52 - EQ 11 */
87 0x07AD, /* R53 - EQ 12 */
88 0x1103, /* R54 - EQ 13 */
89 0x1C58, /* R55 - EQ 14 */
90 0xF373, /* R56 - EQ 15 */
91 0x0A54, /* R57 - EQ 16 */
92 0x0558, /* R58 - EQ 17 */
93 0x0564, /* R59 - EQ 18 */
94 0x0559, /* R60 - EQ 19 */
95 0x4000, /* R61 - EQ 20 */
96};
97
98static struct {
99 int ratio;
100 int clk_sys_rate;
101} clk_sys_rates[] = {
102 { 64, 0 },
103 { 128, 1 },
104 { 192, 2 },
105 { 256, 3 },
106 { 384, 4 },
107 { 512, 5 },
108 { 768, 6 },
109 { 1024, 7 },
110 { 1408, 8 },
111 { 1536, 9 },
112};
113
114static struct {
115 int rate;
116 int sample_rate;
117} sample_rates[] = {
118 { 8000, 0 },
119 { 11025, 1 },
120 { 12000, 2 },
121 { 16000, 3 },
122 { 22050, 4 },
123 { 24000, 5 },
124 { 32000, 6 },
125 { 44100, 7 },
126 { 48000, 8 },
127 { 88200, 9 },
128 { 96000, 10 },
129};
130
131static struct {
132 int div; /* *10 due to .5s */
133 int bclk_div;
134} bclk_divs[] = {
135 { 10, 0 },
136 { 15, 1 },
137 { 20, 2 },
138 { 30, 3 },
139 { 40, 4 },
140 { 50, 5 },
141 { 55, 6 },
142 { 60, 7 },
143 { 80, 8 },
144 { 100, 9 },
145 { 110, 10 },
146 { 120, 11 },
147 { 160, 12 },
148 { 200, 13 },
149 { 220, 14 },
150 { 240, 15 },
151 { 250, 16 },
152 { 300, 17 },
153 { 320, 18 },
154 { 440, 19 },
155 { 480, 20 },
156};
157
158struct wm9081_priv {
159 struct snd_soc_codec codec;
160 u16 reg_cache[WM9081_MAX_REGISTER + 1];
161 int sysclk_source;
162 int mclk_rate;
163 int sysclk_rate;
164 int fs;
165 int bclk;
166 int master;
167 int fll_fref;
168 int fll_fout;
169 int tdm_width;
170 struct wm9081_retune_mobile_config *retune;
171};
172
173static int wm9081_volatile_register(unsigned int reg)
174{
175 switch (reg) {
176 case WM9081_SOFTWARE_RESET:
177 return 1;
178 default:
179 return 0;
180 }
181}
182
183static int wm9081_reset(struct snd_soc_codec *codec)
184{
185 return snd_soc_write(codec, WM9081_SOFTWARE_RESET, 0);
186}
187
188static const DECLARE_TLV_DB_SCALE(drc_in_tlv, -4500, 75, 0);
189static const DECLARE_TLV_DB_SCALE(drc_out_tlv, -2250, 75, 0);
190static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0);
191static unsigned int drc_max_tlv[] = {
192 TLV_DB_RANGE_HEAD(4),
193 0, 0, TLV_DB_SCALE_ITEM(1200, 0, 0),
194 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0),
195 2, 2, TLV_DB_SCALE_ITEM(2400, 0, 0),
196 3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0),
197};
198static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0);
199static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -300, 50, 0);
200
201static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
202
203static const DECLARE_TLV_DB_SCALE(in_tlv, -600, 600, 0);
204static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1);
205static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
206
207static const char *drc_high_text[] = {
208 "1",
209 "1/2",
210 "1/4",
211 "1/8",
212 "1/16",
213 "0",
214};
215
216static const struct soc_enum drc_high =
217 SOC_ENUM_SINGLE(WM9081_DRC_3, 3, 6, drc_high_text);
218
219static const char *drc_low_text[] = {
220 "1",
221 "1/2",
222 "1/4",
223 "1/8",
224 "0",
225};
226
227static const struct soc_enum drc_low =
228 SOC_ENUM_SINGLE(WM9081_DRC_3, 0, 5, drc_low_text);
229
230static const char *drc_atk_text[] = {
231 "181us",
232 "181us",
233 "363us",
234 "726us",
235 "1.45ms",
236 "2.9ms",
237 "5.8ms",
238 "11.6ms",
239 "23.2ms",
240 "46.4ms",
241 "92.8ms",
242 "185.6ms",
243};
244
245static const struct soc_enum drc_atk =
246 SOC_ENUM_SINGLE(WM9081_DRC_2, 12, 12, drc_atk_text);
247
248static const char *drc_dcy_text[] = {
249 "186ms",
250 "372ms",
251 "743ms",
252 "1.49s",
253 "2.97s",
254 "5.94s",
255 "11.89s",
256 "23.78s",
257 "47.56s",
258};
259
260static const struct soc_enum drc_dcy =
261 SOC_ENUM_SINGLE(WM9081_DRC_2, 8, 9, drc_dcy_text);
262
263static const char *drc_qr_dcy_text[] = {
264 "0.725ms",
265 "1.45ms",
266 "5.8ms",
267};
268
269static const struct soc_enum drc_qr_dcy =
270 SOC_ENUM_SINGLE(WM9081_DRC_2, 4, 3, drc_qr_dcy_text);
271
272static const char *dac_deemph_text[] = {
273 "None",
274 "32kHz",
275 "44.1kHz",
276 "48kHz",
277};
278
279static const struct soc_enum dac_deemph =
280 SOC_ENUM_SINGLE(WM9081_DAC_DIGITAL_2, 1, 4, dac_deemph_text);
281
282static const char *speaker_mode_text[] = {
283 "Class D",
284 "Class AB",
285};
286
287static const struct soc_enum speaker_mode =
288 SOC_ENUM_SINGLE(WM9081_ANALOGUE_SPEAKER_2, 6, 2, speaker_mode_text);
289
290static int speaker_mode_get(struct snd_kcontrol *kcontrol,
291 struct snd_ctl_elem_value *ucontrol)
292{
293 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
294 unsigned int reg;
295
296 reg = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2);
297 if (reg & WM9081_SPK_MODE)
298 ucontrol->value.integer.value[0] = 1;
299 else
300 ucontrol->value.integer.value[0] = 0;
301
302 return 0;
303}
304
305/*
306 * Stop any attempts to change speaker mode while the speaker is enabled.
307 *
308 * We also have some special anti-pop controls dependant on speaker
309 * mode which must be changed along with the mode.
310 */
311static int speaker_mode_put(struct snd_kcontrol *kcontrol,
312 struct snd_ctl_elem_value *ucontrol)
313{
314 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
315 unsigned int reg_pwr = snd_soc_read(codec, WM9081_POWER_MANAGEMENT);
316 unsigned int reg2 = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2);
317
318 /* Are we changing anything? */
319 if (ucontrol->value.integer.value[0] ==
320 ((reg2 & WM9081_SPK_MODE) != 0))
321 return 0;
322
323 /* Don't try to change modes while enabled */
324 if (reg_pwr & WM9081_SPK_ENA)
325 return -EINVAL;
326
327 if (ucontrol->value.integer.value[0]) {
328 /* Class AB */
329 reg2 &= ~(WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL);
330 reg2 |= WM9081_SPK_MODE;
331 } else {
332 /* Class D */
333 reg2 |= WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL;
334 reg2 &= ~WM9081_SPK_MODE;
335 }
336
337 snd_soc_write(codec, WM9081_ANALOGUE_SPEAKER_2, reg2);
338
339 return 0;
340}
341
342static const struct snd_kcontrol_new wm9081_snd_controls[] = {
343SOC_SINGLE_TLV("IN1 Volume", WM9081_ANALOGUE_MIXER, 1, 1, 1, in_tlv),
344SOC_SINGLE_TLV("IN2 Volume", WM9081_ANALOGUE_MIXER, 3, 1, 1, in_tlv),
345
346SOC_SINGLE_TLV("Playback Volume", WM9081_DAC_DIGITAL_1, 1, 96, 0, dac_tlv),
347
348SOC_SINGLE("LINEOUT Switch", WM9081_ANALOGUE_LINEOUT, 7, 1, 1),
349SOC_SINGLE("LINEOUT ZC Switch", WM9081_ANALOGUE_LINEOUT, 6, 1, 0),
350SOC_SINGLE_TLV("LINEOUT Volume", WM9081_ANALOGUE_LINEOUT, 0, 63, 0, out_tlv),
351
352SOC_SINGLE("DRC Switch", WM9081_DRC_1, 15, 1, 0),
353SOC_ENUM("DRC High Slope", drc_high),
354SOC_ENUM("DRC Low Slope", drc_low),
355SOC_SINGLE_TLV("DRC Input Volume", WM9081_DRC_4, 5, 60, 1, drc_in_tlv),
356SOC_SINGLE_TLV("DRC Output Volume", WM9081_DRC_4, 0, 30, 1, drc_out_tlv),
357SOC_SINGLE_TLV("DRC Minimum Volume", WM9081_DRC_2, 2, 3, 1, drc_min_tlv),
358SOC_SINGLE_TLV("DRC Maximum Volume", WM9081_DRC_2, 0, 3, 0, drc_max_tlv),
359SOC_ENUM("DRC Attack", drc_atk),
360SOC_ENUM("DRC Decay", drc_dcy),
361SOC_SINGLE("DRC Quick Release Switch", WM9081_DRC_1, 2, 1, 0),
362SOC_SINGLE_TLV("DRC Quick Release Volume", WM9081_DRC_2, 6, 3, 0, drc_qr_tlv),
363SOC_ENUM("DRC Quick Release Decay", drc_qr_dcy),
364SOC_SINGLE_TLV("DRC Startup Volume", WM9081_DRC_1, 6, 18, 0, drc_startup_tlv),
365
366SOC_SINGLE("EQ Switch", WM9081_EQ_1, 0, 1, 0),
367
368SOC_SINGLE("Speaker DC Volume", WM9081_ANALOGUE_SPEAKER_1, 3, 5, 0),
369SOC_SINGLE("Speaker AC Volume", WM9081_ANALOGUE_SPEAKER_1, 0, 5, 0),
370SOC_SINGLE("Speaker Switch", WM9081_ANALOGUE_SPEAKER_PGA, 7, 1, 1),
371SOC_SINGLE("Speaker ZC Switch", WM9081_ANALOGUE_SPEAKER_PGA, 6, 1, 0),
372SOC_SINGLE_TLV("Speaker Volume", WM9081_ANALOGUE_SPEAKER_PGA, 0, 63, 0,
373 out_tlv),
374SOC_ENUM("DAC Deemphasis", dac_deemph),
375SOC_ENUM_EXT("Speaker Mode", speaker_mode, speaker_mode_get, speaker_mode_put),
376};
377
378static const struct snd_kcontrol_new wm9081_eq_controls[] = {
379SOC_SINGLE_TLV("EQ1 Volume", WM9081_EQ_1, 11, 24, 0, eq_tlv),
380SOC_SINGLE_TLV("EQ2 Volume", WM9081_EQ_1, 6, 24, 0, eq_tlv),
381SOC_SINGLE_TLV("EQ3 Volume", WM9081_EQ_1, 1, 24, 0, eq_tlv),
382SOC_SINGLE_TLV("EQ4 Volume", WM9081_EQ_2, 11, 24, 0, eq_tlv),
383SOC_SINGLE_TLV("EQ5 Volume", WM9081_EQ_2, 6, 24, 0, eq_tlv),
384};
385
386static const struct snd_kcontrol_new mixer[] = {
387SOC_DAPM_SINGLE("IN1 Switch", WM9081_ANALOGUE_MIXER, 0, 1, 0),
388SOC_DAPM_SINGLE("IN2 Switch", WM9081_ANALOGUE_MIXER, 2, 1, 0),
389SOC_DAPM_SINGLE("Playback Switch", WM9081_ANALOGUE_MIXER, 4, 1, 0),
390};
391
392static int speaker_event(struct snd_soc_dapm_widget *w,
393 struct snd_kcontrol *kcontrol, int event)
394{
395 struct snd_soc_codec *codec = w->codec;
396 unsigned int reg = snd_soc_read(codec, WM9081_POWER_MANAGEMENT);
397
398 switch (event) {
399 case SND_SOC_DAPM_POST_PMU:
400 reg |= WM9081_SPK_ENA;
401 break;
402
403 case SND_SOC_DAPM_PRE_PMD:
404 reg &= ~WM9081_SPK_ENA;
405 break;
406 }
407
408 snd_soc_write(codec, WM9081_POWER_MANAGEMENT, reg);
409
410 return 0;
411}
412
413struct _fll_div {
414 u16 fll_fratio;
415 u16 fll_outdiv;
416 u16 fll_clk_ref_div;
417 u16 n;
418 u16 k;
419};
420
421/* The size in bits of the FLL divide multiplied by 10
422 * to allow rounding later */
423#define FIXED_FLL_SIZE ((1 << 16) * 10)
424
425static struct {
426 unsigned int min;
427 unsigned int max;
428 u16 fll_fratio;
429 int ratio;
430} fll_fratios[] = {
431 { 0, 64000, 4, 16 },
432 { 64000, 128000, 3, 8 },
433 { 128000, 256000, 2, 4 },
434 { 256000, 1000000, 1, 2 },
435 { 1000000, 13500000, 0, 1 },
436};
437
438static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
439 unsigned int Fout)
440{
441 u64 Kpart;
442 unsigned int K, Ndiv, Nmod, target;
443 unsigned int div;
444 int i;
445
446 /* Fref must be <=13.5MHz */
447 div = 1;
448 while ((Fref / div) > 13500000) {
449 div *= 2;
450
451 if (div > 8) {
452 pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
453 Fref);
454 return -EINVAL;
455 }
456 }
457 fll_div->fll_clk_ref_div = div / 2;
458
459 pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
460
461 /* Apply the division for our remaining calculations */
462 Fref /= div;
463
464 /* Fvco should be 90-100MHz; don't check the upper bound */
465 div = 0;
466 target = Fout * 2;
467 while (target < 90000000) {
468 div++;
469 target *= 2;
470 if (div > 7) {
471 pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
472 Fout);
473 return -EINVAL;
474 }
475 }
476 fll_div->fll_outdiv = div;
477
478 pr_debug("Fvco=%dHz\n", target);
479
480 /* Find an appropraite FLL_FRATIO and factor it out of the target */
481 for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
482 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
483 fll_div->fll_fratio = fll_fratios[i].fll_fratio;
484 target /= fll_fratios[i].ratio;
485 break;
486 }
487 }
488 if (i == ARRAY_SIZE(fll_fratios)) {
489 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
490 return -EINVAL;
491 }
492
493 /* Now, calculate N.K */
494 Ndiv = target / Fref;
495
496 fll_div->n = Ndiv;
497 Nmod = target % Fref;
498 pr_debug("Nmod=%d\n", Nmod);
499
500 /* Calculate fractional part - scale up so we can round. */
501 Kpart = FIXED_FLL_SIZE * (long long)Nmod;
502
503 do_div(Kpart, Fref);
504
505 K = Kpart & 0xFFFFFFFF;
506
507 if ((K % 10) >= 5)
508 K += 5;
509
510 /* Move down to proper range now rounding is done */
511 fll_div->k = K / 10;
512
513 pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
514 fll_div->n, fll_div->k,
515 fll_div->fll_fratio, fll_div->fll_outdiv,
516 fll_div->fll_clk_ref_div);
517
518 return 0;
519}
520
521static int wm9081_set_fll(struct snd_soc_codec *codec, int fll_id,
522 unsigned int Fref, unsigned int Fout)
523{
524 struct wm9081_priv *wm9081 = codec->private_data;
525 u16 reg1, reg4, reg5;
526 struct _fll_div fll_div;
527 int ret;
528 int clk_sys_reg;
529
530 /* Any change? */
531 if (Fref == wm9081->fll_fref && Fout == wm9081->fll_fout)
532 return 0;
533
534 /* Disable the FLL */
535 if (Fout == 0) {
536 dev_dbg(codec->dev, "FLL disabled\n");
537 wm9081->fll_fref = 0;
538 wm9081->fll_fout = 0;
539
540 return 0;
541 }
542
543 ret = fll_factors(&fll_div, Fref, Fout);
544 if (ret != 0)
545 return ret;
546
547 reg5 = snd_soc_read(codec, WM9081_FLL_CONTROL_5);
548 reg5 &= ~WM9081_FLL_CLK_SRC_MASK;
549
550 switch (fll_id) {
551 case WM9081_SYSCLK_FLL_MCLK:
552 reg5 |= 0x1;
553 break;
554
555 default:
556 dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
557 return -EINVAL;
558 }
559
560 /* Disable CLK_SYS while we reconfigure */
561 clk_sys_reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3);
562 if (clk_sys_reg & WM9081_CLK_SYS_ENA)
563 snd_soc_write(codec, WM9081_CLOCK_CONTROL_3,
564 clk_sys_reg & ~WM9081_CLK_SYS_ENA);
565
566 /* Any FLL configuration change requires that the FLL be
567 * disabled first. */
568 reg1 = snd_soc_read(codec, WM9081_FLL_CONTROL_1);
569 reg1 &= ~WM9081_FLL_ENA;
570 snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1);
571
572 /* Apply the configuration */
573 if (fll_div.k)
574 reg1 |= WM9081_FLL_FRAC_MASK;
575 else
576 reg1 &= ~WM9081_FLL_FRAC_MASK;
577 snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1);
578
579 snd_soc_write(codec, WM9081_FLL_CONTROL_2,
580 (fll_div.fll_outdiv << WM9081_FLL_OUTDIV_SHIFT) |
581 (fll_div.fll_fratio << WM9081_FLL_FRATIO_SHIFT));
582 snd_soc_write(codec, WM9081_FLL_CONTROL_3, fll_div.k);
583
584 reg4 = snd_soc_read(codec, WM9081_FLL_CONTROL_4);
585 reg4 &= ~WM9081_FLL_N_MASK;
586 reg4 |= fll_div.n << WM9081_FLL_N_SHIFT;
587 snd_soc_write(codec, WM9081_FLL_CONTROL_4, reg4);
588
589 reg5 &= ~WM9081_FLL_CLK_REF_DIV_MASK;
590 reg5 |= fll_div.fll_clk_ref_div << WM9081_FLL_CLK_REF_DIV_SHIFT;
591 snd_soc_write(codec, WM9081_FLL_CONTROL_5, reg5);
592
593 /* Enable the FLL */
594 snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1 | WM9081_FLL_ENA);
595
596 /* Then bring CLK_SYS up again if it was disabled */
597 if (clk_sys_reg & WM9081_CLK_SYS_ENA)
598 snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, clk_sys_reg);
599
600 dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
601
602 wm9081->fll_fref = Fref;
603 wm9081->fll_fout = Fout;
604
605 return 0;
606}
607
608static int configure_clock(struct snd_soc_codec *codec)
609{
610 struct wm9081_priv *wm9081 = codec->private_data;
611 int new_sysclk, i, target;
612 unsigned int reg;
613 int ret = 0;
614 int mclkdiv = 0;
615 int fll = 0;
616
617 switch (wm9081->sysclk_source) {
618 case WM9081_SYSCLK_MCLK:
619 if (wm9081->mclk_rate > 12225000) {
620 mclkdiv = 1;
621 wm9081->sysclk_rate = wm9081->mclk_rate / 2;
622 } else {
623 wm9081->sysclk_rate = wm9081->mclk_rate;
624 }
625 wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK, 0, 0);
626 break;
627
628 case WM9081_SYSCLK_FLL_MCLK:
629 /* If we have a sample rate calculate a CLK_SYS that
630 * gives us a suitable DAC configuration, plus BCLK.
631 * Ideally we would check to see if we can clock
632 * directly from MCLK and only use the FLL if this is
633 * not the case, though care must be taken with free
634 * running mode.
635 */
636 if (wm9081->master && wm9081->bclk) {
637 /* Make sure we can generate CLK_SYS and BCLK
638 * and that we've got 3MHz for optimal
639 * performance. */
640 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
641 target = wm9081->fs * clk_sys_rates[i].ratio;
642 new_sysclk = target;
643 if (target >= wm9081->bclk &&
644 target > 3000000)
645 break;
646 }
647
648 if (i == ARRAY_SIZE(clk_sys_rates))
649 return -EINVAL;
650
651 } else if (wm9081->fs) {
652 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
653 new_sysclk = clk_sys_rates[i].ratio
654 * wm9081->fs;
655 if (new_sysclk > 3000000)
656 break;
657 }
658
659 if (i == ARRAY_SIZE(clk_sys_rates))
660 return -EINVAL;
661
662 } else {
663 new_sysclk = 12288000;
664 }
665
666 ret = wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK,
667 wm9081->mclk_rate, new_sysclk);
668 if (ret == 0) {
669 wm9081->sysclk_rate = new_sysclk;
670
671 /* Switch SYSCLK over to FLL */
672 fll = 1;
673 } else {
674 wm9081->sysclk_rate = wm9081->mclk_rate;
675 }
676 break;
677
678 default:
679 return -EINVAL;
680 }
681
682 reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_1);
683 if (mclkdiv)
684 reg |= WM9081_MCLKDIV2;
685 else
686 reg &= ~WM9081_MCLKDIV2;
687 snd_soc_write(codec, WM9081_CLOCK_CONTROL_1, reg);
688
689 reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3);
690 if (fll)
691 reg |= WM9081_CLK_SRC_SEL;
692 else
693 reg &= ~WM9081_CLK_SRC_SEL;
694 snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, reg);
695
696 dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm9081->sysclk_rate);
697
698 return ret;
699}
700
701static int clk_sys_event(struct snd_soc_dapm_widget *w,
702 struct snd_kcontrol *kcontrol, int event)
703{
704 struct snd_soc_codec *codec = w->codec;
705 struct wm9081_priv *wm9081 = codec->private_data;
706
707 /* This should be done on init() for bypass paths */
708 switch (wm9081->sysclk_source) {
709 case WM9081_SYSCLK_MCLK:
710 dev_dbg(codec->dev, "Using %dHz MCLK\n", wm9081->mclk_rate);
711 break;
712 case WM9081_SYSCLK_FLL_MCLK:
713 dev_dbg(codec->dev, "Using %dHz MCLK with FLL\n",
714 wm9081->mclk_rate);
715 break;
716 default:
717 dev_err(codec->dev, "System clock not configured\n");
718 return -EINVAL;
719 }
720
721 switch (event) {
722 case SND_SOC_DAPM_PRE_PMU:
723 configure_clock(codec);
724 break;
725
726 case SND_SOC_DAPM_POST_PMD:
727 /* Disable the FLL if it's running */
728 wm9081_set_fll(codec, 0, 0, 0);
729 break;
730 }
731
732 return 0;
733}
734
735static const struct snd_soc_dapm_widget wm9081_dapm_widgets[] = {
736SND_SOC_DAPM_INPUT("IN1"),
737SND_SOC_DAPM_INPUT("IN2"),
738
739SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM9081_POWER_MANAGEMENT, 0, 0),
740
741SND_SOC_DAPM_MIXER_NAMED_CTL("Mixer", SND_SOC_NOPM, 0, 0,
742 mixer, ARRAY_SIZE(mixer)),
743
744SND_SOC_DAPM_PGA("LINEOUT PGA", WM9081_POWER_MANAGEMENT, 4, 0, NULL, 0),
745
746SND_SOC_DAPM_PGA_E("Speaker PGA", WM9081_POWER_MANAGEMENT, 2, 0, NULL, 0,
747 speaker_event,
748 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
749
750SND_SOC_DAPM_OUTPUT("LINEOUT"),
751SND_SOC_DAPM_OUTPUT("SPKN"),
752SND_SOC_DAPM_OUTPUT("SPKP"),
753
754SND_SOC_DAPM_SUPPLY("CLK_SYS", WM9081_CLOCK_CONTROL_3, 0, 0, clk_sys_event,
755 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
756SND_SOC_DAPM_SUPPLY("CLK_DSP", WM9081_CLOCK_CONTROL_3, 1, 0, NULL, 0),
757SND_SOC_DAPM_SUPPLY("TOCLK", WM9081_CLOCK_CONTROL_3, 2, 0, NULL, 0),
758};
759
760
761static const struct snd_soc_dapm_route audio_paths[] = {
762 { "DAC", NULL, "CLK_SYS" },
763 { "DAC", NULL, "CLK_DSP" },
764
765 { "Mixer", "IN1 Switch", "IN1" },
766 { "Mixer", "IN2 Switch", "IN2" },
767 { "Mixer", "Playback Switch", "DAC" },
768
769 { "LINEOUT PGA", NULL, "Mixer" },
770 { "LINEOUT PGA", NULL, "TOCLK" },
771 { "LINEOUT PGA", NULL, "CLK_SYS" },
772
773 { "LINEOUT", NULL, "LINEOUT PGA" },
774
775 { "Speaker PGA", NULL, "Mixer" },
776 { "Speaker PGA", NULL, "TOCLK" },
777 { "Speaker PGA", NULL, "CLK_SYS" },
778
779 { "SPKN", NULL, "Speaker PGA" },
780 { "SPKP", NULL, "Speaker PGA" },
781};
782
783static int wm9081_set_bias_level(struct snd_soc_codec *codec,
784 enum snd_soc_bias_level level)
785{
786 u16 reg;
787
788 switch (level) {
789 case SND_SOC_BIAS_ON:
790 break;
791
792 case SND_SOC_BIAS_PREPARE:
793 /* VMID=2*40k */
794 reg = snd_soc_read(codec, WM9081_VMID_CONTROL);
795 reg &= ~WM9081_VMID_SEL_MASK;
796 reg |= 0x2;
797 snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
798
799 /* Normal bias current */
800 reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
801 reg &= ~WM9081_STBY_BIAS_ENA;
802 snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
803 break;
804
805 case SND_SOC_BIAS_STANDBY:
806 /* Initial cold start */
807 if (codec->bias_level == SND_SOC_BIAS_OFF) {
808 /* Disable LINEOUT discharge */
809 reg = snd_soc_read(codec, WM9081_ANTI_POP_CONTROL);
810 reg &= ~WM9081_LINEOUT_DISCH;
811 snd_soc_write(codec, WM9081_ANTI_POP_CONTROL, reg);
812
813 /* Select startup bias source */
814 reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
815 reg |= WM9081_BIAS_SRC | WM9081_BIAS_ENA;
816 snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
817
818 /* VMID 2*4k; Soft VMID ramp enable */
819 reg = snd_soc_read(codec, WM9081_VMID_CONTROL);
820 reg |= WM9081_VMID_RAMP | 0x6;
821 snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
822
823 mdelay(100);
824
825 /* Normal bias enable & soft start off */
826 reg |= WM9081_BIAS_ENA;
827 reg &= ~WM9081_VMID_RAMP;
828 snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
829
830 /* Standard bias source */
831 reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
832 reg &= ~WM9081_BIAS_SRC;
833 snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
834 }
835
836 /* VMID 2*240k */
837 reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
838 reg &= ~WM9081_VMID_SEL_MASK;
839 reg |= 0x40;
840 snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
841
842 /* Standby bias current on */
843 reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
844 reg |= WM9081_STBY_BIAS_ENA;
845 snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
846 break;
847
848 case SND_SOC_BIAS_OFF:
849 /* Startup bias source */
850 reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
851 reg |= WM9081_BIAS_SRC;
852 snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
853
854 /* Disable VMID and biases with soft ramping */
855 reg = snd_soc_read(codec, WM9081_VMID_CONTROL);
856 reg &= ~(WM9081_VMID_SEL_MASK | WM9081_BIAS_ENA);
857 reg |= WM9081_VMID_RAMP;
858 snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
859
860 /* Actively discharge LINEOUT */
861 reg = snd_soc_read(codec, WM9081_ANTI_POP_CONTROL);
862 reg |= WM9081_LINEOUT_DISCH;
863 snd_soc_write(codec, WM9081_ANTI_POP_CONTROL, reg);
864 break;
865 }
866
867 codec->bias_level = level;
868
869 return 0;
870}
871
872static int wm9081_set_dai_fmt(struct snd_soc_dai *dai,
873 unsigned int fmt)
874{
875 struct snd_soc_codec *codec = dai->codec;
876 struct wm9081_priv *wm9081 = codec->private_data;
877 unsigned int aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2);
878
879 aif2 &= ~(WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV |
880 WM9081_BCLK_DIR | WM9081_LRCLK_DIR | WM9081_AIF_FMT_MASK);
881
882 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
883 case SND_SOC_DAIFMT_CBS_CFS:
884 wm9081->master = 0;
885 break;
886 case SND_SOC_DAIFMT_CBS_CFM:
887 aif2 |= WM9081_LRCLK_DIR;
888 wm9081->master = 1;
889 break;
890 case SND_SOC_DAIFMT_CBM_CFS:
891 aif2 |= WM9081_BCLK_DIR;
892 wm9081->master = 1;
893 break;
894 case SND_SOC_DAIFMT_CBM_CFM:
895 aif2 |= WM9081_LRCLK_DIR | WM9081_BCLK_DIR;
896 wm9081->master = 1;
897 break;
898 default:
899 return -EINVAL;
900 }
901
902 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
903 case SND_SOC_DAIFMT_DSP_B:
904 aif2 |= WM9081_AIF_LRCLK_INV;
905 case SND_SOC_DAIFMT_DSP_A:
906 aif2 |= 0x3;
907 break;
908 case SND_SOC_DAIFMT_I2S:
909 aif2 |= 0x2;
910 break;
911 case SND_SOC_DAIFMT_RIGHT_J:
912 break;
913 case SND_SOC_DAIFMT_LEFT_J:
914 aif2 |= 0x1;
915 break;
916 default:
917 return -EINVAL;
918 }
919
920 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
921 case SND_SOC_DAIFMT_DSP_A:
922 case SND_SOC_DAIFMT_DSP_B:
923 /* frame inversion not valid for DSP modes */
924 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
925 case SND_SOC_DAIFMT_NB_NF:
926 break;
927 case SND_SOC_DAIFMT_IB_NF:
928 aif2 |= WM9081_AIF_BCLK_INV;
929 break;
930 default:
931 return -EINVAL;
932 }
933 break;
934
935 case SND_SOC_DAIFMT_I2S:
936 case SND_SOC_DAIFMT_RIGHT_J:
937 case SND_SOC_DAIFMT_LEFT_J:
938 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
939 case SND_SOC_DAIFMT_NB_NF:
940 break;
941 case SND_SOC_DAIFMT_IB_IF:
942 aif2 |= WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV;
943 break;
944 case SND_SOC_DAIFMT_IB_NF:
945 aif2 |= WM9081_AIF_BCLK_INV;
946 break;
947 case SND_SOC_DAIFMT_NB_IF:
948 aif2 |= WM9081_AIF_LRCLK_INV;
949 break;
950 default:
951 return -EINVAL;
952 }
953 break;
954 default:
955 return -EINVAL;
956 }
957
958 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2);
959
960 return 0;
961}
962
963static int wm9081_hw_params(struct snd_pcm_substream *substream,
964 struct snd_pcm_hw_params *params,
965 struct snd_soc_dai *dai)
966{
967 struct snd_soc_codec *codec = dai->codec;
968 struct wm9081_priv *wm9081 = codec->private_data;
969 int ret, i, best, best_val, cur_val;
970 unsigned int clk_ctrl2, aif1, aif2, aif3, aif4;
971
972 clk_ctrl2 = snd_soc_read(codec, WM9081_CLOCK_CONTROL_2);
973 clk_ctrl2 &= ~(WM9081_CLK_SYS_RATE_MASK | WM9081_SAMPLE_RATE_MASK);
974
975 aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1);
976
977 aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2);
978 aif2 &= ~WM9081_AIF_WL_MASK;
979
980 aif3 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_3);
981 aif3 &= ~WM9081_BCLK_DIV_MASK;
982
983 aif4 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_4);
984 aif4 &= ~WM9081_LRCLK_RATE_MASK;
985
986 wm9081->fs = params_rate(params);
987
988 if (wm9081->tdm_width) {
989 /* If TDM is set up then that fixes our BCLK. */
990 int slots = ((aif1 & WM9081_AIFDAC_TDM_MODE_MASK) >>
991 WM9081_AIFDAC_TDM_MODE_SHIFT) + 1;
992
993 wm9081->bclk = wm9081->fs * wm9081->tdm_width * slots;
994 } else {
995 /* Otherwise work out a BCLK from the sample size */
996 wm9081->bclk = 2 * wm9081->fs;
997
998 switch (params_format(params)) {
999 case SNDRV_PCM_FORMAT_S16_LE:
1000 wm9081->bclk *= 16;
1001 break;
1002 case SNDRV_PCM_FORMAT_S20_3LE:
1003 wm9081->bclk *= 20;
1004 aif2 |= 0x4;
1005 break;
1006 case SNDRV_PCM_FORMAT_S24_LE:
1007 wm9081->bclk *= 24;
1008 aif2 |= 0x8;
1009 break;
1010 case SNDRV_PCM_FORMAT_S32_LE:
1011 wm9081->bclk *= 32;
1012 aif2 |= 0xc;
1013 break;
1014 default:
1015 return -EINVAL;
1016 }
1017 }
1018
1019 dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm9081->bclk);
1020
1021 ret = configure_clock(codec);
1022 if (ret != 0)
1023 return ret;
1024
1025 /* Select nearest CLK_SYS_RATE */
1026 best = 0;
1027 best_val = abs((wm9081->sysclk_rate / clk_sys_rates[0].ratio)
1028 - wm9081->fs);
1029 for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1030 cur_val = abs((wm9081->sysclk_rate /
1031 clk_sys_rates[i].ratio) - wm9081->fs);
1032 if (cur_val < best_val) {
1033 best = i;
1034 best_val = cur_val;
1035 }
1036 }
1037 dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
1038 clk_sys_rates[best].ratio);
1039 clk_ctrl2 |= (clk_sys_rates[best].clk_sys_rate
1040 << WM9081_CLK_SYS_RATE_SHIFT);
1041
1042 /* SAMPLE_RATE */
1043 best = 0;
1044 best_val = abs(wm9081->fs - sample_rates[0].rate);
1045 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1046 /* Closest match */
1047 cur_val = abs(wm9081->fs - sample_rates[i].rate);
1048 if (cur_val < best_val) {
1049 best = i;
1050 best_val = cur_val;
1051 }
1052 }
1053 dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
1054 sample_rates[best].rate);
1055 clk_ctrl2 |= (sample_rates[best].sample_rate
1056 << WM9081_SAMPLE_RATE_SHIFT);
1057
1058 /* BCLK_DIV */
1059 best = 0;
1060 best_val = INT_MAX;
1061 for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1062 cur_val = ((wm9081->sysclk_rate * 10) / bclk_divs[i].div)
1063 - wm9081->bclk;
1064 if (cur_val < 0) /* Table is sorted */
1065 break;
1066 if (cur_val < best_val) {
1067 best = i;
1068 best_val = cur_val;
1069 }
1070 }
1071 wm9081->bclk = (wm9081->sysclk_rate * 10) / bclk_divs[best].div;
1072 dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1073 bclk_divs[best].div, wm9081->bclk);
1074 aif3 |= bclk_divs[best].bclk_div;
1075
1076 /* LRCLK is a simple fraction of BCLK */
1077 dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm9081->bclk / wm9081->fs);
1078 aif4 |= wm9081->bclk / wm9081->fs;
1079
1080 /* Apply a ReTune Mobile configuration if it's in use */
1081 if (wm9081->retune) {
1082 struct wm9081_retune_mobile_config *retune = wm9081->retune;
1083 struct wm9081_retune_mobile_setting *s;
1084 int eq1;
1085
1086 best = 0;
1087 best_val = abs(retune->configs[0].rate - wm9081->fs);
1088 for (i = 0; i < retune->num_configs; i++) {
1089 cur_val = abs(retune->configs[i].rate - wm9081->fs);
1090 if (cur_val < best_val) {
1091 best_val = cur_val;
1092 best = i;
1093 }
1094 }
1095 s = &retune->configs[best];
1096
1097 dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n",
1098 s->name, s->rate);
1099
1100 /* If the EQ is enabled then disable it while we write out */
1101 eq1 = snd_soc_read(codec, WM9081_EQ_1) & WM9081_EQ_ENA;
1102 if (eq1 & WM9081_EQ_ENA)
1103 snd_soc_write(codec, WM9081_EQ_1, 0);
1104
1105 /* Write out the other values */
1106 for (i = 1; i < ARRAY_SIZE(s->config); i++)
1107 snd_soc_write(codec, WM9081_EQ_1 + i, s->config[i]);
1108
1109 eq1 |= (s->config[0] & ~WM9081_EQ_ENA);
1110 snd_soc_write(codec, WM9081_EQ_1, eq1);
1111 }
1112
1113 snd_soc_write(codec, WM9081_CLOCK_CONTROL_2, clk_ctrl2);
1114 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2);
1115 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_3, aif3);
1116 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_4, aif4);
1117
1118 return 0;
1119}
1120
1121static int wm9081_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1122{
1123 struct snd_soc_codec *codec = codec_dai->codec;
1124 unsigned int reg;
1125
1126 reg = snd_soc_read(codec, WM9081_DAC_DIGITAL_2);
1127
1128 if (mute)
1129 reg |= WM9081_DAC_MUTE;
1130 else
1131 reg &= ~WM9081_DAC_MUTE;
1132
1133 snd_soc_write(codec, WM9081_DAC_DIGITAL_2, reg);
1134
1135 return 0;
1136}
1137
1138static int wm9081_set_sysclk(struct snd_soc_dai *codec_dai,
1139 int clk_id, unsigned int freq, int dir)
1140{
1141 struct snd_soc_codec *codec = codec_dai->codec;
1142 struct wm9081_priv *wm9081 = codec->private_data;
1143
1144 switch (clk_id) {
1145 case WM9081_SYSCLK_MCLK:
1146 case WM9081_SYSCLK_FLL_MCLK:
1147 wm9081->sysclk_source = clk_id;
1148 wm9081->mclk_rate = freq;
1149 break;
1150
1151 default:
1152 return -EINVAL;
1153 }
1154
1155 return 0;
1156}
1157
1158static int wm9081_set_tdm_slot(struct snd_soc_dai *dai,
1159 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
1160{
1161 struct snd_soc_codec *codec = dai->codec;
1162 struct wm9081_priv *wm9081 = codec->private_data;
1163 unsigned int aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1);
1164
1165 aif1 &= ~(WM9081_AIFDAC_TDM_SLOT_MASK | WM9081_AIFDAC_TDM_MODE_MASK);
1166
1167 if (slots < 0 || slots > 4)
1168 return -EINVAL;
1169
1170 wm9081->tdm_width = slot_width;
1171
1172 if (slots == 0)
1173 slots = 1;
1174
1175 aif1 |= (slots - 1) << WM9081_AIFDAC_TDM_MODE_SHIFT;
1176
1177 switch (rx_mask) {
1178 case 1:
1179 break;
1180 case 2:
1181 aif1 |= 0x10;
1182 break;
1183 case 4:
1184 aif1 |= 0x20;
1185 break;
1186 case 8:
1187 aif1 |= 0x30;
1188 break;
1189 default:
1190 return -EINVAL;
1191 }
1192
1193 snd_soc_write(codec, WM9081_AUDIO_INTERFACE_1, aif1);
1194
1195 return 0;
1196}
1197
1198#define WM9081_RATES SNDRV_PCM_RATE_8000_96000
1199
1200#define WM9081_FORMATS \
1201 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
1202 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
1203
1204static struct snd_soc_dai_ops wm9081_dai_ops = {
1205 .hw_params = wm9081_hw_params,
1206 .set_sysclk = wm9081_set_sysclk,
1207 .set_fmt = wm9081_set_dai_fmt,
1208 .digital_mute = wm9081_digital_mute,
1209 .set_tdm_slot = wm9081_set_tdm_slot,
1210};
1211
1212/* We report two channels because the CODEC processes a stereo signal, even
1213 * though it is only capable of handling a mono output.
1214 */
1215struct snd_soc_dai wm9081_dai = {
1216 .name = "WM9081",
1217 .playback = {
1218 .stream_name = "HiFi Playback",
1219 .channels_min = 1,
1220 .channels_max = 2,
1221 .rates = WM9081_RATES,
1222 .formats = WM9081_FORMATS,
1223 },
1224 .ops = &wm9081_dai_ops,
1225};
1226EXPORT_SYMBOL_GPL(wm9081_dai);
1227
1228
1229static struct snd_soc_codec *wm9081_codec;
1230
1231static int wm9081_probe(struct platform_device *pdev)
1232{
1233 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1234 struct snd_soc_codec *codec;
1235 struct wm9081_priv *wm9081;
1236 int ret = 0;
1237
1238 if (wm9081_codec == NULL) {
1239 dev_err(&pdev->dev, "Codec device not registered\n");
1240 return -ENODEV;
1241 }
1242
1243 socdev->card->codec = wm9081_codec;
1244 codec = wm9081_codec;
1245 wm9081 = codec->private_data;
1246
1247 /* register pcms */
1248 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1249 if (ret < 0) {
1250 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
1251 goto pcm_err;
1252 }
1253
1254 snd_soc_add_controls(codec, wm9081_snd_controls,
1255 ARRAY_SIZE(wm9081_snd_controls));
1256 if (!wm9081->retune) {
1257 dev_dbg(codec->dev,
1258 "No ReTune Mobile data, using normal EQ\n");
1259 snd_soc_add_controls(codec, wm9081_eq_controls,
1260 ARRAY_SIZE(wm9081_eq_controls));
1261 }
1262
1263 snd_soc_dapm_new_controls(codec, wm9081_dapm_widgets,
1264 ARRAY_SIZE(wm9081_dapm_widgets));
1265 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
1266
1267 return ret;
1268
1269pcm_err:
1270 return ret;
1271}
1272
1273static int wm9081_remove(struct platform_device *pdev)
1274{
1275 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1276
1277 snd_soc_free_pcms(socdev);
1278 snd_soc_dapm_free(socdev);
1279
1280 return 0;
1281}
1282
1283#ifdef CONFIG_PM
1284static int wm9081_suspend(struct platform_device *pdev, pm_message_t state)
1285{
1286 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1287 struct snd_soc_codec *codec = socdev->card->codec;
1288
1289 wm9081_set_bias_level(codec, SND_SOC_BIAS_OFF);
1290
1291 return 0;
1292}
1293
1294static int wm9081_resume(struct platform_device *pdev)
1295{
1296 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1297 struct snd_soc_codec *codec = socdev->card->codec;
1298 u16 *reg_cache = codec->reg_cache;
1299 int i;
1300
1301 for (i = 0; i < codec->reg_cache_size; i++) {
1302 if (i == WM9081_SOFTWARE_RESET)
1303 continue;
1304
1305 snd_soc_write(codec, i, reg_cache[i]);
1306 }
1307
1308 wm9081_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1309
1310 return 0;
1311}
1312#else
1313#define wm9081_suspend NULL
1314#define wm9081_resume NULL
1315#endif
1316
1317struct snd_soc_codec_device soc_codec_dev_wm9081 = {
1318 .probe = wm9081_probe,
1319 .remove = wm9081_remove,
1320 .suspend = wm9081_suspend,
1321 .resume = wm9081_resume,
1322};
1323EXPORT_SYMBOL_GPL(soc_codec_dev_wm9081);
1324
1325static int wm9081_register(struct wm9081_priv *wm9081,
1326 enum snd_soc_control_type control)
1327{
1328 struct snd_soc_codec *codec = &wm9081->codec;
1329 int ret;
1330 u16 reg;
1331
1332 if (wm9081_codec) {
1333 dev_err(codec->dev, "Another WM9081 is registered\n");
1334 ret = -EINVAL;
1335 goto err;
1336 }
1337
1338 mutex_init(&codec->mutex);
1339 INIT_LIST_HEAD(&codec->dapm_widgets);
1340 INIT_LIST_HEAD(&codec->dapm_paths);
1341
1342 codec->private_data = wm9081;
1343 codec->name = "WM9081";
1344 codec->owner = THIS_MODULE;
1345 codec->dai = &wm9081_dai;
1346 codec->num_dai = 1;
1347 codec->reg_cache_size = ARRAY_SIZE(wm9081->reg_cache);
1348 codec->reg_cache = &wm9081->reg_cache;
1349 codec->bias_level = SND_SOC_BIAS_OFF;
1350 codec->set_bias_level = wm9081_set_bias_level;
1351 codec->volatile_register = wm9081_volatile_register;
1352
1353 memcpy(codec->reg_cache, wm9081_reg_defaults,
1354 sizeof(wm9081_reg_defaults));
1355
1356 ret = snd_soc_codec_set_cache_io(codec, 8, 16, control);
1357 if (ret != 0) {
1358 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1359 return ret;
1360 }
1361
1362 reg = snd_soc_read(codec, WM9081_SOFTWARE_RESET);
1363 if (reg != 0x9081) {
1364 dev_err(codec->dev, "Device is not a WM9081: ID=0x%x\n", reg);
1365 ret = -EINVAL;
1366 goto err;
1367 }
1368
1369 ret = wm9081_reset(codec);
1370 if (ret < 0) {
1371 dev_err(codec->dev, "Failed to issue reset\n");
1372 return ret;
1373 }
1374
1375 wm9081_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1376
1377 /* Enable zero cross by default */
1378 reg = snd_soc_read(codec, WM9081_ANALOGUE_LINEOUT);
1379 snd_soc_write(codec, WM9081_ANALOGUE_LINEOUT, reg | WM9081_LINEOUTZC);
1380 reg = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_PGA);
1381 snd_soc_write(codec, WM9081_ANALOGUE_SPEAKER_PGA,
1382 reg | WM9081_SPKPGAZC);
1383
1384 wm9081_dai.dev = codec->dev;
1385
1386 wm9081_codec = codec;
1387
1388 ret = snd_soc_register_codec(codec);
1389 if (ret != 0) {
1390 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
1391 return ret;
1392 }
1393
1394 ret = snd_soc_register_dai(&wm9081_dai);
1395 if (ret != 0) {
1396 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
1397 snd_soc_unregister_codec(codec);
1398 return ret;
1399 }
1400
1401 return 0;
1402
1403err:
1404 kfree(wm9081);
1405 return ret;
1406}
1407
1408static void wm9081_unregister(struct wm9081_priv *wm9081)
1409{
1410 wm9081_set_bias_level(&wm9081->codec, SND_SOC_BIAS_OFF);
1411 snd_soc_unregister_dai(&wm9081_dai);
1412 snd_soc_unregister_codec(&wm9081->codec);
1413 kfree(wm9081);
1414 wm9081_codec = NULL;
1415}
1416
1417static __devinit int wm9081_i2c_probe(struct i2c_client *i2c,
1418 const struct i2c_device_id *id)
1419{
1420 struct wm9081_priv *wm9081;
1421 struct snd_soc_codec *codec;
1422
1423 wm9081 = kzalloc(sizeof(struct wm9081_priv), GFP_KERNEL);
1424 if (wm9081 == NULL)
1425 return -ENOMEM;
1426
1427 codec = &wm9081->codec;
1428 codec->hw_write = (hw_write_t)i2c_master_send;
1429 wm9081->retune = i2c->dev.platform_data;
1430
1431 i2c_set_clientdata(i2c, wm9081);
1432 codec->control_data = i2c;
1433
1434 codec->dev = &i2c->dev;
1435
1436 return wm9081_register(wm9081, SND_SOC_I2C);
1437}
1438
1439static __devexit int wm9081_i2c_remove(struct i2c_client *client)
1440{
1441 struct wm9081_priv *wm9081 = i2c_get_clientdata(client);
1442 wm9081_unregister(wm9081);
1443 return 0;
1444}
1445
1446static const struct i2c_device_id wm9081_i2c_id[] = {
1447 { "wm9081", 0 },
1448 { }
1449};
1450MODULE_DEVICE_TABLE(i2c, wm9081_i2c_id);
1451
1452static struct i2c_driver wm9081_i2c_driver = {
1453 .driver = {
1454 .name = "wm9081",
1455 .owner = THIS_MODULE,
1456 },
1457 .probe = wm9081_i2c_probe,
1458 .remove = __devexit_p(wm9081_i2c_remove),
1459 .id_table = wm9081_i2c_id,
1460};
1461
1462static int __init wm9081_modinit(void)
1463{
1464 int ret;
1465
1466 ret = i2c_add_driver(&wm9081_i2c_driver);
1467 if (ret != 0) {
1468 printk(KERN_ERR "Failed to register WM9081 I2C driver: %d\n",
1469 ret);
1470 }
1471
1472 return ret;
1473}
1474module_init(wm9081_modinit);
1475
1476static void __exit wm9081_exit(void)
1477{
1478 i2c_del_driver(&wm9081_i2c_driver);
1479}
1480module_exit(wm9081_exit);
1481
1482
1483MODULE_DESCRIPTION("ASoC WM9081 driver");
1484MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1485MODULE_LICENSE("GPL");