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gerrit-public.fairphone.software / kernel / msm-4.19 / 74dc55ed5b709e4a2a538252f98ea62358df82ce / . / sound / soc / codecs / wm8961.c
blob: 8e78959ca40936c95f0f37fff16d4073caf7e6fd [file] [log] [blame]
Mark Brown74dc55e2009-06-09 09:55:51 +0100[diff] [blame^]1/*
2 * wm8961.c -- WM8961 ALSA SoC Audio driver
3 *
4 * Author: Mark Brown
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Currently unimplemented features:
11 * - ALC
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 <sound/core.h>
22#include <sound/pcm.h>
23#include <sound/pcm_params.h>
24#include <sound/soc.h>
25#include <sound/soc-dapm.h>
26#include <sound/initval.h>
27#include <sound/tlv.h>
28
29#include "wm8961.h"
30
31#define WM8961_MAX_REGISTER 0xFC
32
33static u16 wm8961_reg_defaults[] = {
34 0x009F, /* R0 - Left Input volume */
35 0x009F, /* R1 - Right Input volume */
36 0x0000, /* R2 - LOUT1 volume */
37 0x0000, /* R3 - ROUT1 volume */
38 0x0020, /* R4 - Clocking1 */
39 0x0008, /* R5 - ADC & DAC Control 1 */
40 0x0000, /* R6 - ADC & DAC Control 2 */
41 0x000A, /* R7 - Audio Interface 0 */
42 0x01F4, /* R8 - Clocking2 */
43 0x0000, /* R9 - Audio Interface 1 */
44 0x00FF, /* R10 - Left DAC volume */
45 0x00FF, /* R11 - Right DAC volume */
46 0x0000, /* R12 */
47 0x0000, /* R13 */
48 0x0040, /* R14 - Audio Interface 2 */
49 0x0000, /* R15 - Software Reset */
50 0x0000, /* R16 */
51 0x007B, /* R17 - ALC1 */
52 0x0000, /* R18 - ALC2 */
53 0x0032, /* R19 - ALC3 */
54 0x0000, /* R20 - Noise Gate */
55 0x00C0, /* R21 - Left ADC volume */
56 0x00C0, /* R22 - Right ADC volume */
57 0x0120, /* R23 - Additional control(1) */
58 0x0000, /* R24 - Additional control(2) */
59 0x0000, /* R25 - Pwr Mgmt (1) */
60 0x0000, /* R26 - Pwr Mgmt (2) */
61 0x0000, /* R27 - Additional Control (3) */
62 0x0000, /* R28 - Anti-pop */
63 0x0000, /* R29 */
64 0x005F, /* R30 - Clocking 3 */
65 0x0000, /* R31 */
66 0x0000, /* R32 - ADCL signal path */
67 0x0000, /* R33 - ADCR signal path */
68 0x0000, /* R34 */
69 0x0000, /* R35 */
70 0x0000, /* R36 */
71 0x0000, /* R37 */
72 0x0000, /* R38 */
73 0x0000, /* R39 */
74 0x0000, /* R40 - LOUT2 volume */
75 0x0000, /* R41 - ROUT2 volume */
76 0x0000, /* R42 */
77 0x0000, /* R43 */
78 0x0000, /* R44 */
79 0x0000, /* R45 */
80 0x0000, /* R46 */
81 0x0000, /* R47 - Pwr Mgmt (3) */
82 0x0023, /* R48 - Additional Control (4) */
83 0x0000, /* R49 - Class D Control 1 */
84 0x0000, /* R50 */
85 0x0003, /* R51 - Class D Control 2 */
86 0x0000, /* R52 */
87 0x0000, /* R53 */
88 0x0000, /* R54 */
89 0x0000, /* R55 */
90 0x0106, /* R56 - Clocking 4 */
91 0x0000, /* R57 - DSP Sidetone 0 */
92 0x0000, /* R58 - DSP Sidetone 1 */
93 0x0000, /* R59 */
94 0x0000, /* R60 - DC Servo 0 */
95 0x0000, /* R61 - DC Servo 1 */
96 0x0000, /* R62 */
97 0x015E, /* R63 - DC Servo 3 */
98 0x0010, /* R64 */
99 0x0010, /* R65 - DC Servo 5 */
100 0x0000, /* R66 */
101 0x0001, /* R67 */
102 0x0003, /* R68 - Analogue PGA Bias */
103 0x0000, /* R69 - Analogue HP 0 */
104 0x0060, /* R70 */
105 0x01FB, /* R71 - Analogue HP 2 */
106 0x0000, /* R72 - Charge Pump 1 */
107 0x0065, /* R73 */
108 0x005F, /* R74 */
109 0x0059, /* R75 */
110 0x006B, /* R76 */
111 0x0038, /* R77 */
112 0x000C, /* R78 */
113 0x000A, /* R79 */
114 0x006B, /* R80 */
115 0x0000, /* R81 */
116 0x0000, /* R82 - Charge Pump B */
117 0x0087, /* R83 */
118 0x0000, /* R84 */
119 0x005C, /* R85 */
120 0x0000, /* R86 */
121 0x0000, /* R87 - Write Sequencer 1 */
122 0x0000, /* R88 - Write Sequencer 2 */
123 0x0000, /* R89 - Write Sequencer 3 */
124 0x0000, /* R90 - Write Sequencer 4 */
125 0x0000, /* R91 - Write Sequencer 5 */
126 0x0000, /* R92 - Write Sequencer 6 */
127 0x0000, /* R93 - Write Sequencer 7 */
128 0x0000, /* R94 */
129 0x0000, /* R95 */
130 0x0000, /* R96 */
131 0x0000, /* R97 */
132 0x0000, /* R98 */
133 0x0000, /* R99 */
134 0x0000, /* R100 */
135 0x0000, /* R101 */
136 0x0000, /* R102 */
137 0x0000, /* R103 */
138 0x0000, /* R104 */
139 0x0000, /* R105 */
140 0x0000, /* R106 */
141 0x0000, /* R107 */
142 0x0000, /* R108 */
143 0x0000, /* R109 */
144 0x0000, /* R110 */
145 0x0000, /* R111 */
146 0x0000, /* R112 */
147 0x0000, /* R113 */
148 0x0000, /* R114 */
149 0x0000, /* R115 */
150 0x0000, /* R116 */
151 0x0000, /* R117 */
152 0x0000, /* R118 */
153 0x0000, /* R119 */
154 0x0000, /* R120 */
155 0x0000, /* R121 */
156 0x0000, /* R122 */
157 0x0000, /* R123 */
158 0x0000, /* R124 */
159 0x0000, /* R125 */
160 0x0000, /* R126 */
161 0x0000, /* R127 */
162 0x0000, /* R128 */
163 0x0000, /* R129 */
164 0x0000, /* R130 */
165 0x0000, /* R131 */
166 0x0000, /* R132 */
167 0x0000, /* R133 */
168 0x0000, /* R134 */
169 0x0000, /* R135 */
170 0x0000, /* R136 */
171 0x0000, /* R137 */
172 0x0000, /* R138 */
173 0x0000, /* R139 */
174 0x0000, /* R140 */
175 0x0000, /* R141 */
176 0x0000, /* R142 */
177 0x0000, /* R143 */
178 0x0000, /* R144 */
179 0x0000, /* R145 */
180 0x0000, /* R146 */
181 0x0000, /* R147 */
182 0x0000, /* R148 */
183 0x0000, /* R149 */
184 0x0000, /* R150 */
185 0x0000, /* R151 */
186 0x0000, /* R152 */
187 0x0000, /* R153 */
188 0x0000, /* R154 */
189 0x0000, /* R155 */
190 0x0000, /* R156 */
191 0x0000, /* R157 */
192 0x0000, /* R158 */
193 0x0000, /* R159 */
194 0x0000, /* R160 */
195 0x0000, /* R161 */
196 0x0000, /* R162 */
197 0x0000, /* R163 */
198 0x0000, /* R164 */
199 0x0000, /* R165 */
200 0x0000, /* R166 */
201 0x0000, /* R167 */
202 0x0000, /* R168 */
203 0x0000, /* R169 */
204 0x0000, /* R170 */
205 0x0000, /* R171 */
206 0x0000, /* R172 */
207 0x0000, /* R173 */
208 0x0000, /* R174 */
209 0x0000, /* R175 */
210 0x0000, /* R176 */
211 0x0000, /* R177 */
212 0x0000, /* R178 */
213 0x0000, /* R179 */
214 0x0000, /* R180 */
215 0x0000, /* R181 */
216 0x0000, /* R182 */
217 0x0000, /* R183 */
218 0x0000, /* R184 */
219 0x0000, /* R185 */
220 0x0000, /* R186 */
221 0x0000, /* R187 */
222 0x0000, /* R188 */
223 0x0000, /* R189 */
224 0x0000, /* R190 */
225 0x0000, /* R191 */
226 0x0000, /* R192 */
227 0x0000, /* R193 */
228 0x0000, /* R194 */
229 0x0000, /* R195 */
230 0x0030, /* R196 */
231 0x0006, /* R197 */
232 0x0000, /* R198 */
233 0x0060, /* R199 */
234 0x0000, /* R200 */
235 0x003F, /* R201 */
236 0x0000, /* R202 */
237 0x0000, /* R203 */
238 0x0000, /* R204 */
239 0x0001, /* R205 */
240 0x0000, /* R206 */
241 0x0181, /* R207 */
242 0x0005, /* R208 */
243 0x0008, /* R209 */
244 0x0008, /* R210 */
245 0x0000, /* R211 */
246 0x013B, /* R212 */
247 0x0000, /* R213 */
248 0x0000, /* R214 */
249 0x0000, /* R215 */
250 0x0000, /* R216 */
251 0x0070, /* R217 */
252 0x0000, /* R218 */
253 0x0000, /* R219 */
254 0x0000, /* R220 */
255 0x0000, /* R221 */
256 0x0000, /* R222 */
257 0x0003, /* R223 */
258 0x0000, /* R224 */
259 0x0000, /* R225 */
260 0x0001, /* R226 */
261 0x0008, /* R227 */
262 0x0000, /* R228 */
263 0x0000, /* R229 */
264 0x0000, /* R230 */
265 0x0000, /* R231 */
266 0x0004, /* R232 */
267 0x0000, /* R233 */
268 0x0000, /* R234 */
269 0x0000, /* R235 */
270 0x0000, /* R236 */
271 0x0000, /* R237 */
272 0x0080, /* R238 */
273 0x0000, /* R239 */
274 0x0000, /* R240 */
275 0x0000, /* R241 */
276 0x0000, /* R242 */
277 0x0000, /* R243 */
278 0x0000, /* R244 */
279 0x0052, /* R245 */
280 0x0110, /* R246 */
281 0x0040, /* R247 */
282 0x0000, /* R248 */
283 0x0030, /* R249 */
284 0x0000, /* R250 */
285 0x0000, /* R251 */
286 0x0001, /* R252 - General test 1 */
287};
288
289struct wm8961_priv {
290 struct snd_soc_codec codec;
291 int sysclk;
292 u16 reg_cache[WM8961_MAX_REGISTER];
293};
294
295static int wm8961_reg_is_volatile(int reg)
296{
297 switch (reg) {
298 case WM8961_WRITE_SEQUENCER_7:
299 case WM8961_DC_SERVO_1:
300 return 1;
301
302 default:
303 return 0;
304 }
305}
306
307static unsigned int wm8961_read_reg_cache(struct snd_soc_codec *codec,
308 unsigned int reg)
309{
310 u16 *cache = codec->reg_cache;
311 BUG_ON(reg > WM8961_MAX_REGISTER);
312 return cache[reg];
313}
314
315static unsigned int wm8961_read_hw(struct snd_soc_codec *codec, u8 reg)
316{
317 struct i2c_msg xfer[2];
318 u16 data;
319 int ret;
320 struct i2c_client *client = codec->control_data;
321
322 BUG_ON(reg > WM8961_MAX_REGISTER);
323
324 /* Write register */
325 xfer[0].addr = client->addr;
326 xfer[0].flags = 0;
327 xfer[0].len = 1;
328 xfer[0].buf = &reg;
329
330 /* Read data */
331 xfer[1].addr = client->addr;
332 xfer[1].flags = I2C_M_RD;
333 xfer[1].len = 2;
334 xfer[1].buf = (u8 *)&data;
335
336 ret = i2c_transfer(client->adapter, xfer, 2);
337 if (ret != 2) {
338 dev_err(&client->dev, "i2c_transfer() returned %d\n", ret);
339 return 0;
340 }
341
342 return (data >> 8) | ((data & 0xff) << 8);
343}
344
345static unsigned int wm8961_read(struct snd_soc_codec *codec, unsigned int reg)
346{
347 if (wm8961_reg_is_volatile(reg))
348 return wm8961_read_hw(codec, reg);
349 else
350 return wm8961_read_reg_cache(codec, reg);
351}
352
353static int wm8961_write(struct snd_soc_codec *codec, unsigned int reg,
354 unsigned int value)
355{
356 u16 *cache = codec->reg_cache;
357 u8 data[3];
358
359 BUG_ON(reg > WM8961_MAX_REGISTER);
360
361 if (!wm8961_reg_is_volatile(reg))
362 cache[reg] = value;
363
364 data[0] = reg;
365 data[1] = value >> 8;
366 data[2] = value & 0x00ff;
367
368 if (codec->hw_write(codec->control_data, data, 3) == 3)
369 return 0;
370 else
371 return -EIO;
372}
373
374static int wm8961_reset(struct snd_soc_codec *codec)
375{
376 return wm8961_write(codec, WM8961_SOFTWARE_RESET, 0);
377}
378
379/*
380 * The headphone output supports special anti-pop sequences giving
381 * silent power up and power down.
382 */
383static int wm8961_hp_event(struct snd_soc_dapm_widget *w,
384 struct snd_kcontrol *kcontrol, int event)
385{
386 struct snd_soc_codec *codec = w->codec;
387 u16 hp_reg = wm8961_read(codec, WM8961_ANALOGUE_HP_0);
388 u16 cp_reg = wm8961_read(codec, WM8961_CHARGE_PUMP_1);
389 u16 pwr_reg = wm8961_read(codec, WM8961_PWR_MGMT_2);
390 u16 dcs_reg = wm8961_read(codec, WM8961_DC_SERVO_1);
391 int timeout = 500;
392
393 if (event & SND_SOC_DAPM_POST_PMU) {
394 /* Make sure the output is shorted */
395 hp_reg &= ~(WM8961_HPR_RMV_SHORT | WM8961_HPL_RMV_SHORT);
396 wm8961_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
397
398 /* Enable the charge pump */
399 cp_reg |= WM8961_CP_ENA;
400 wm8961_write(codec, WM8961_CHARGE_PUMP_1, cp_reg);
401 mdelay(5);
402
403 /* Enable the PGA */
404 pwr_reg |= WM8961_LOUT1_PGA | WM8961_ROUT1_PGA;
405 wm8961_write(codec, WM8961_PWR_MGMT_2, pwr_reg);
406
407 /* Enable the amplifier */
408 hp_reg |= WM8961_HPR_ENA | WM8961_HPL_ENA;
409 wm8961_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
410
411 /* Second stage enable */
412 hp_reg |= WM8961_HPR_ENA_DLY | WM8961_HPL_ENA_DLY;
413 wm8961_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
414
415 /* Enable the DC servo & trigger startup */
416 dcs_reg |=
417 WM8961_DCS_ENA_CHAN_HPR | WM8961_DCS_TRIG_STARTUP_HPR |
418 WM8961_DCS_ENA_CHAN_HPL | WM8961_DCS_TRIG_STARTUP_HPL;
419 dev_dbg(codec->dev, "Enabling DC servo\n");
420
421 wm8961_write(codec, WM8961_DC_SERVO_1, dcs_reg);
422 do {
423 msleep(1);
424 dcs_reg = wm8961_read(codec, WM8961_DC_SERVO_1);
425 } while (--timeout &&
426 dcs_reg & (WM8961_DCS_TRIG_STARTUP_HPR |
427 WM8961_DCS_TRIG_STARTUP_HPL));
428 if (dcs_reg & (WM8961_DCS_TRIG_STARTUP_HPR |
429 WM8961_DCS_TRIG_STARTUP_HPL))
430 dev_err(codec->dev, "DC servo timed out\n");
431 else
432 dev_dbg(codec->dev, "DC servo startup complete\n");
433
434 /* Enable the output stage */
435 hp_reg |= WM8961_HPR_ENA_OUTP | WM8961_HPL_ENA_OUTP;
436 wm8961_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
437
438 /* Remove the short on the output stage */
439 hp_reg |= WM8961_HPR_RMV_SHORT | WM8961_HPL_RMV_SHORT;
440 wm8961_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
441 }
442
443 if (event & SND_SOC_DAPM_PRE_PMD) {
444 /* Short the output */
445 hp_reg &= ~(WM8961_HPR_RMV_SHORT | WM8961_HPL_RMV_SHORT);
446 wm8961_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
447
448 /* Disable the output stage */
449 hp_reg &= ~(WM8961_HPR_ENA_OUTP | WM8961_HPL_ENA_OUTP);
450 wm8961_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
451
452 /* Disable DC offset cancellation */
453 dcs_reg &= ~(WM8961_DCS_ENA_CHAN_HPR |
454 WM8961_DCS_ENA_CHAN_HPL);
455 wm8961_write(codec, WM8961_DC_SERVO_1, dcs_reg);
456
457 /* Finish up */
458 hp_reg &= ~(WM8961_HPR_ENA_DLY | WM8961_HPR_ENA |
459 WM8961_HPL_ENA_DLY | WM8961_HPL_ENA);
460 wm8961_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
461
462 /* Disable the PGA */
463 pwr_reg &= ~(WM8961_LOUT1_PGA | WM8961_ROUT1_PGA);
464 wm8961_write(codec, WM8961_PWR_MGMT_2, pwr_reg);
465
466 /* Disable the charge pump */
467 dev_dbg(codec->dev, "Disabling charge pump\n");
468 wm8961_write(codec, WM8961_CHARGE_PUMP_1,
469 cp_reg & ~WM8961_CP_ENA);
470 }
471
472 return 0;
473}
474
475static int wm8961_spk_event(struct snd_soc_dapm_widget *w,
476 struct snd_kcontrol *kcontrol, int event)
477{
478 struct snd_soc_codec *codec = w->codec;
479 u16 pwr_reg = wm8961_read(codec, WM8961_PWR_MGMT_2);
480 u16 spk_reg = wm8961_read(codec, WM8961_CLASS_D_CONTROL_1);
481
482 if (event & SND_SOC_DAPM_POST_PMU) {
483 /* Enable the PGA */
484 pwr_reg |= WM8961_SPKL_PGA | WM8961_SPKR_PGA;
485 wm8961_write(codec, WM8961_PWR_MGMT_2, pwr_reg);
486
487 /* Enable the amplifier */
488 spk_reg |= WM8961_SPKL_ENA | WM8961_SPKR_ENA;
489 wm8961_write(codec, WM8961_CLASS_D_CONTROL_1, spk_reg);
490 }
491
492 if (event & SND_SOC_DAPM_PRE_PMD) {
493 /* Enable the amplifier */
494 spk_reg &= ~(WM8961_SPKL_ENA | WM8961_SPKR_ENA);
495 wm8961_write(codec, WM8961_CLASS_D_CONTROL_1, spk_reg);
496
497 /* Enable the PGA */
498 pwr_reg &= ~(WM8961_SPKL_PGA | WM8961_SPKR_PGA);
499 wm8961_write(codec, WM8961_PWR_MGMT_2, pwr_reg);
500 }
501
502 return 0;
503}
504
505static const char *adc_hpf_text[] = {
506 "Hi-fi", "Voice 1", "Voice 2", "Voice 3",
507};
508
509static const struct soc_enum adc_hpf =
510 SOC_ENUM_SINGLE(WM8961_ADC_DAC_CONTROL_2, 7, 4, adc_hpf_text);
511
512static const char *dac_deemph_text[] = {
513 "None", "32kHz", "44.1kHz", "48kHz",
514};
515
516static const struct soc_enum dac_deemph =
517 SOC_ENUM_SINGLE(WM8961_ADC_DAC_CONTROL_1, 1, 4, dac_deemph_text);
518
519static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
520static const DECLARE_TLV_DB_SCALE(hp_sec_tlv, -700, 100, 0);
521static const DECLARE_TLV_DB_SCALE(adc_tlv, -7200, 75, 1);
522static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
523static unsigned int boost_tlv[] = {
524 TLV_DB_RANGE_HEAD(4),
525 0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
526 1, 1, TLV_DB_SCALE_ITEM(13, 0, 0),
527 2, 2, TLV_DB_SCALE_ITEM(20, 0, 0),
528 3, 3, TLV_DB_SCALE_ITEM(29, 0, 0),
529};
530static const DECLARE_TLV_DB_SCALE(pga_tlv, -2325, 75, 0);
531
532static const struct snd_kcontrol_new wm8961_snd_controls[] = {
533SOC_DOUBLE_R_TLV("Headphone Volume", WM8961_LOUT1_VOLUME, WM8961_ROUT1_VOLUME,
534 0, 127, 0, out_tlv),
535SOC_DOUBLE_TLV("Headphone Secondary Volume", WM8961_ANALOGUE_HP_2,
536 6, 3, 7, 0, hp_sec_tlv),
537SOC_DOUBLE_R("Headphone ZC Switch", WM8961_LOUT1_VOLUME, WM8961_ROUT1_VOLUME,
538 7, 1, 0),
539
540SOC_DOUBLE_R_TLV("Speaker Volume", WM8961_LOUT2_VOLUME, WM8961_ROUT2_VOLUME,
541 0, 127, 0, out_tlv),
542SOC_DOUBLE_R("Speaker ZC Switch", WM8961_LOUT2_VOLUME, WM8961_ROUT2_VOLUME,
543 7, 1, 0),
544SOC_SINGLE("Speaker AC Gain", WM8961_CLASS_D_CONTROL_2, 0, 7, 0),
545
546SOC_SINGLE("DAC x128 OSR Switch", WM8961_ADC_DAC_CONTROL_2, 0, 1, 0),
547SOC_ENUM("DAC Deemphasis", dac_deemph),
548SOC_SINGLE("DAC Soft Mute Switch", WM8961_ADC_DAC_CONTROL_2, 3, 1, 0),
549
550SOC_DOUBLE_R_TLV("Sidetone Volume", WM8961_DSP_SIDETONE_0,
551 WM8961_DSP_SIDETONE_1, 4, 12, 0, sidetone_tlv),
552
553SOC_SINGLE("ADC High Pass Filter Switch", WM8961_ADC_DAC_CONTROL_1, 0, 1, 0),
554SOC_ENUM("ADC High Pass Filter Mode", adc_hpf),
555
556SOC_DOUBLE_R_TLV("Capture Volume",
557 WM8961_LEFT_ADC_VOLUME, WM8961_RIGHT_ADC_VOLUME,
558 1, 119, 0, adc_tlv),
559SOC_DOUBLE_R_TLV("Capture Boost Volume",
560 WM8961_ADCL_SIGNAL_PATH, WM8961_ADCR_SIGNAL_PATH,
561 4, 3, 0, boost_tlv),
562SOC_DOUBLE_R_TLV("Capture PGA Volume",
563 WM8961_LEFT_INPUT_VOLUME, WM8961_RIGHT_INPUT_VOLUME,
564 0, 62, 0, pga_tlv),
565SOC_DOUBLE_R("Capture PGA ZC Switch",
566 WM8961_LEFT_INPUT_VOLUME, WM8961_RIGHT_INPUT_VOLUME,
567 6, 1, 1),
568SOC_DOUBLE_R("Capture PGA Switch",
569 WM8961_LEFT_INPUT_VOLUME, WM8961_RIGHT_INPUT_VOLUME,
570 7, 1, 1),
571};
572
573static const char *sidetone_text[] = {
574 "None", "Left", "Right"
575};
576
577static const struct soc_enum dacl_sidetone =
578 SOC_ENUM_SINGLE(WM8961_DSP_SIDETONE_0, 2, 3, sidetone_text);
579
580static const struct soc_enum dacr_sidetone =
581 SOC_ENUM_SINGLE(WM8961_DSP_SIDETONE_1, 2, 3, sidetone_text);
582
583static const struct snd_kcontrol_new dacl_mux =
584 SOC_DAPM_ENUM("DACL Sidetone", dacl_sidetone);
585
586static const struct snd_kcontrol_new dacr_mux =
587 SOC_DAPM_ENUM("DACR Sidetone", dacr_sidetone);
588
589static const struct snd_soc_dapm_widget wm8961_dapm_widgets[] = {
590SND_SOC_DAPM_INPUT("LINPUT"),
591SND_SOC_DAPM_INPUT("RINPUT"),
592
593SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8961_CLOCKING2, 4, 0, NULL, 0),
594
595SND_SOC_DAPM_PGA("Left Input", WM8961_PWR_MGMT_1, 5, 0, NULL, 0),
596SND_SOC_DAPM_PGA("Right Input", WM8961_PWR_MGMT_1, 4, 0, NULL, 0),
597
598SND_SOC_DAPM_ADC("ADCL", "HiFi Capture", WM8961_PWR_MGMT_1, 3, 0),
599SND_SOC_DAPM_ADC("ADCR", "HiFi Capture", WM8961_PWR_MGMT_1, 2, 0),
600
601SND_SOC_DAPM_MICBIAS("MICBIAS", WM8961_PWR_MGMT_1, 1, 0),
602
603SND_SOC_DAPM_MUX("DACL Sidetone", SND_SOC_NOPM, 0, 0, &dacl_mux),
604SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &dacr_mux),
605
606SND_SOC_DAPM_DAC("DACL", "HiFi Playback", WM8961_PWR_MGMT_2, 8, 0),
607SND_SOC_DAPM_DAC("DACR", "HiFi Playback", WM8961_PWR_MGMT_2, 7, 0),
608
609/* Handle as a mono path for DCS */
610SND_SOC_DAPM_PGA_E("Headphone Output", SND_SOC_NOPM,
611 4, 0, NULL, 0, wm8961_hp_event,
612 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
613SND_SOC_DAPM_PGA_E("Speaker Output", SND_SOC_NOPM,
614 4, 0, NULL, 0, wm8961_spk_event,
615 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
616
617SND_SOC_DAPM_OUTPUT("HP_L"),
618SND_SOC_DAPM_OUTPUT("HP_R"),
619SND_SOC_DAPM_OUTPUT("SPK_LN"),
620SND_SOC_DAPM_OUTPUT("SPK_LP"),
621SND_SOC_DAPM_OUTPUT("SPK_RN"),
622SND_SOC_DAPM_OUTPUT("SPK_RP"),
623};
624
625
626static const struct snd_soc_dapm_route audio_paths[] = {
627 { "DACL", NULL, "CLK_DSP" },
628 { "DACL", NULL, "DACL Sidetone" },
629 { "DACR", NULL, "CLK_DSP" },
630 { "DACR", NULL, "DACR Sidetone" },
631
632 { "DACL Sidetone", "Left", "ADCL" },
633 { "DACL Sidetone", "Right", "ADCR" },
634
635 { "DACR Sidetone", "Left", "ADCL" },
636 { "DACR Sidetone", "Right", "ADCR" },
637
638 { "HP_L", NULL, "Headphone Output" },
639 { "HP_R", NULL, "Headphone Output" },
640 { "Headphone Output", NULL, "DACL" },
641 { "Headphone Output", NULL, "DACR" },
642
643 { "SPK_LN", NULL, "Speaker Output" },
644 { "SPK_LP", NULL, "Speaker Output" },
645 { "SPK_RN", NULL, "Speaker Output" },
646 { "SPK_RP", NULL, "Speaker Output" },
647
648 { "Speaker Output", NULL, "DACL" },
649 { "Speaker Output", NULL, "DACR" },
650
651 { "ADCL", NULL, "Left Input" },
652 { "ADCL", NULL, "CLK_DSP" },
653 { "ADCR", NULL, "Right Input" },
654 { "ADCR", NULL, "CLK_DSP" },
655
656 { "Left Input", NULL, "LINPUT" },
657 { "Right Input", NULL, "RINPUT" },
658
659};
660
661/* Values for CLK_SYS_RATE */
662static struct {
663 int ratio;
664 u16 val;
665} wm8961_clk_sys_ratio[] = {
666 { 64, 0 },
667 { 128, 1 },
668 { 192, 2 },
669 { 256, 3 },
670 { 384, 4 },
671 { 512, 5 },
672 { 768, 6 },
673 { 1024, 7 },
674 { 1408, 8 },
675 { 1536, 9 },
676};
677
678/* Values for SAMPLE_RATE */
679static struct {
680 int rate;
681 u16 val;
682} wm8961_srate[] = {
683 { 48000, 0 },
684 { 44100, 0 },
685 { 32000, 1 },
686 { 22050, 2 },
687 { 24000, 2 },
688 { 16000, 3 },
689 { 11250, 4 },
690 { 12000, 4 },
691 { 8000, 5 },
692};
693
694static int wm8961_hw_params(struct snd_pcm_substream *substream,
695 struct snd_pcm_hw_params *params,
696 struct snd_soc_dai *dai)
697{
698 struct snd_soc_codec *codec = dai->codec;
699 struct wm8961_priv *wm8961 = codec->private_data;
700 int i, best, target, fs;
701 u16 reg;
702
703 fs = params_rate(params);
704
705 if (!wm8961->sysclk) {
706 dev_err(codec->dev, "MCLK has not been specified\n");
707 return -EINVAL;
708 }
709
710 /* Find the closest sample rate for the filters */
711 best = 0;
712 for (i = 0; i < ARRAY_SIZE(wm8961_srate); i++) {
713 if (abs(wm8961_srate[i].rate - fs) <
714 abs(wm8961_srate[best].rate - fs))
715 best = i;
716 }
717 reg = wm8961_read(codec, WM8961_ADDITIONAL_CONTROL_3);
718 reg &= ~WM8961_SAMPLE_RATE_MASK;
719 reg |= wm8961_srate[best].val;
720 wm8961_write(codec, WM8961_ADDITIONAL_CONTROL_3, reg);
721 dev_dbg(codec->dev, "Selected SRATE %dHz for %dHz\n",
722 wm8961_srate[best].rate, fs);
723
724 /* Select a CLK_SYS/fs ratio equal to or higher than required */
725 target = wm8961->sysclk / fs;
726
727 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && target < 64) {
728 dev_err(codec->dev,
729 "SYSCLK must be at least 64*fs for DAC\n");
730 return -EINVAL;
731 }
732 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE && target < 256) {
733 dev_err(codec->dev,
734 "SYSCLK must be at least 256*fs for ADC\n");
735 return -EINVAL;
736 }
737
738 for (i = 0; i < ARRAY_SIZE(wm8961_clk_sys_ratio); i++) {
739 if (wm8961_clk_sys_ratio[i].ratio >= target)
740 break;
741 }
742 if (i == ARRAY_SIZE(wm8961_clk_sys_ratio)) {
743 dev_err(codec->dev, "Unable to generate CLK_SYS_RATE\n");
744 return -EINVAL;
745 }
746 dev_dbg(codec->dev, "Selected CLK_SYS_RATE of %d for %d/%d=%d\n",
747 wm8961_clk_sys_ratio[i].ratio, wm8961->sysclk, fs,
748 wm8961->sysclk / fs);
749
750 reg = wm8961_read(codec, WM8961_CLOCKING_4);
751 reg &= ~WM8961_CLK_SYS_RATE_MASK;
752 reg |= wm8961_clk_sys_ratio[i].val << WM8961_CLK_SYS_RATE_SHIFT;
753 wm8961_write(codec, WM8961_CLOCKING_4, reg);
754
755 reg = wm8961_read(codec, WM8961_AUDIO_INTERFACE_0);
756 reg &= ~WM8961_WL_MASK;
757 switch (params_format(params)) {
758 case SNDRV_PCM_FORMAT_S16_LE:
759 break;
760 case SNDRV_PCM_FORMAT_S20_3LE:
761 reg |= 1 << WM8961_WL_SHIFT;
762 break;
763 case SNDRV_PCM_FORMAT_S24_LE:
764 reg |= 2 << WM8961_WL_SHIFT;
765 break;
766 case SNDRV_PCM_FORMAT_S32_LE:
767 reg |= 3 << WM8961_WL_SHIFT;
768 break;
769 default:
770 return -EINVAL;
771 }
772 wm8961_write(codec, WM8961_AUDIO_INTERFACE_0, reg);
773
774 /* Sloping stop-band filter is recommended for <= 24kHz */
775 reg = wm8961_read(codec, WM8961_ADC_DAC_CONTROL_2);
776 if (fs <= 24000)
777 reg |= WM8961_DACSLOPE;
778 else
779 reg &= WM8961_DACSLOPE;
780 wm8961_write(codec, WM8961_ADC_DAC_CONTROL_2, reg);
781
782 return 0;
783}
784
785static int wm8961_set_sysclk(struct snd_soc_dai *dai, int clk_id,
786 unsigned int freq,
787 int dir)
788{
789 struct snd_soc_codec *codec = dai->codec;
790 struct wm8961_priv *wm8961 = codec->private_data;
791 u16 reg = wm8961_read(codec, WM8961_CLOCKING1);
792
793 if (freq > 33000000) {
794 dev_err(codec->dev, "MCLK must be <33MHz\n");
795 return -EINVAL;
796 }
797
798 if (freq > 16500000) {
799 dev_dbg(codec->dev, "Using MCLK/2 for %dHz MCLK\n", freq);
800 reg |= WM8961_MCLKDIV;
801 freq /= 2;
802 } else {
803 dev_dbg(codec->dev, "Using MCLK/1 for %dHz MCLK\n", freq);
804 reg &= WM8961_MCLKDIV;
805 }
806
807 wm8961_write(codec, WM8961_CLOCKING1, reg);
808
809 wm8961->sysclk = freq;
810
811 return 0;
812}
813
814static int wm8961_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
815{
816 struct snd_soc_codec *codec = dai->codec;
817 u16 aif = wm8961_read(codec, WM8961_AUDIO_INTERFACE_0);
818
819 aif &= ~(WM8961_BCLKINV | WM8961_LRP |
820 WM8961_MS | WM8961_FORMAT_MASK);
821
822 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
823 case SND_SOC_DAIFMT_CBM_CFM:
824 aif |= WM8961_MS;
825 break;
826 case SND_SOC_DAIFMT_CBS_CFS:
827 break;
828 default:
829 return -EINVAL;
830 }
831
832 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
833 case SND_SOC_DAIFMT_RIGHT_J:
834 break;
835
836 case SND_SOC_DAIFMT_LEFT_J:
837 aif |= 1;
838 break;
839
840 case SND_SOC_DAIFMT_I2S:
841 aif |= 2;
842 break;
843
844 case SND_SOC_DAIFMT_DSP_B:
845 aif |= WM8961_LRP;
846 case SND_SOC_DAIFMT_DSP_A:
847 aif |= 3;
848 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
849 case SND_SOC_DAIFMT_NB_NF:
850 case SND_SOC_DAIFMT_IB_NF:
851 break;
852 default:
853 return -EINVAL;
854 }
855 break;
856
857 default:
858 return -EINVAL;
859 }
860
861 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
862 case SND_SOC_DAIFMT_NB_NF:
863 break;
864 case SND_SOC_DAIFMT_NB_IF:
865 aif |= WM8961_LRP;
866 break;
867 case SND_SOC_DAIFMT_IB_NF:
868 aif |= WM8961_BCLKINV;
869 break;
870 case SND_SOC_DAIFMT_IB_IF:
871 aif |= WM8961_BCLKINV | WM8961_LRP;
872 break;
873 default:
874 return -EINVAL;
875 }
876
877 return wm8961_write(codec, WM8961_AUDIO_INTERFACE_0, aif);
878}
879
880static int wm8961_set_tristate(struct snd_soc_dai *dai, int tristate)
881{
882 struct snd_soc_codec *codec = dai->codec;
883 u16 reg = wm8961_read(codec, WM8961_ADDITIONAL_CONTROL_2);
884
885 if (tristate)
886 reg |= WM8961_TRIS;
887 else
888 reg &= ~WM8961_TRIS;
889
890 return wm8961_write(codec, WM8961_ADDITIONAL_CONTROL_2, reg);
891}
892
893static int wm8961_digital_mute(struct snd_soc_dai *dai, int mute)
894{
895 struct snd_soc_codec *codec = dai->codec;
896 u16 reg = wm8961_read(codec, WM8961_ADC_DAC_CONTROL_1);
897
898 if (mute)
899 reg |= WM8961_DACMU;
900 else
901 reg &= ~WM8961_DACMU;
902
903 msleep(17);
904
905 return wm8961_write(codec, WM8961_ADC_DAC_CONTROL_1, reg);
906}
907
908static int wm8961_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div)
909{
910 struct snd_soc_codec *codec = dai->codec;
911 u16 reg;
912
913 switch (div_id) {
914 case WM8961_BCLK:
915 reg = wm8961_read(codec, WM8961_CLOCKING2);
916 reg &= ~WM8961_BCLKDIV_MASK;
917 reg |= div;
918 wm8961_write(codec, WM8961_CLOCKING2, reg);
919 break;
920
921 case WM8961_LRCLK:
922 reg = wm8961_read(codec, WM8961_AUDIO_INTERFACE_2);
923 reg &= ~WM8961_LRCLK_RATE_MASK;
924 reg |= div;
925 wm8961_write(codec, WM8961_AUDIO_INTERFACE_2, reg);
926 break;
927
928 default:
929 return -EINVAL;
930 }
931
932 return 0;
933}
934
935static int wm8961_set_bias_level(struct snd_soc_codec *codec,
936 enum snd_soc_bias_level level)
937{
938 u16 reg;
939
940 /* This is all slightly unusual since we have no bypass paths
941 * and the output amplifier structure means we can just slam
942 * the biases straight up rather than having to ramp them
943 * slowly.
944 */
945 switch (level) {
946 case SND_SOC_BIAS_ON:
947 break;
948
949 case SND_SOC_BIAS_PREPARE:
950 if (codec->bias_level == SND_SOC_BIAS_STANDBY) {
951 /* Enable bias generation */
952 reg = wm8961_read(codec, WM8961_ANTI_POP);
953 reg |= WM8961_BUFIOEN | WM8961_BUFDCOPEN;
954 wm8961_write(codec, WM8961_ANTI_POP, reg);
955
956 /* VMID=2*50k, VREF */
957 reg = wm8961_read(codec, WM8961_PWR_MGMT_1);
958 reg &= ~WM8961_VMIDSEL_MASK;
959 reg |= (1 << WM8961_VMIDSEL_SHIFT) | WM8961_VREF;
960 wm8961_write(codec, WM8961_PWR_MGMT_1, reg);
961 }
962 break;
963
964 case SND_SOC_BIAS_STANDBY:
965 if (codec->bias_level == SND_SOC_BIAS_PREPARE) {
966 /* VREF off */
967 reg = wm8961_read(codec, WM8961_PWR_MGMT_1);
968 reg &= ~WM8961_VREF;
969 wm8961_write(codec, WM8961_PWR_MGMT_1, reg);
970
971 /* Bias generation off */
972 reg = wm8961_read(codec, WM8961_ANTI_POP);
973 reg &= ~(WM8961_BUFIOEN | WM8961_BUFDCOPEN);
974 wm8961_write(codec, WM8961_ANTI_POP, reg);
975
976 /* VMID off */
977 reg = wm8961_read(codec, WM8961_PWR_MGMT_1);
978 reg &= ~WM8961_VMIDSEL_MASK;
979 wm8961_write(codec, WM8961_PWR_MGMT_1, reg);
980 }
981 break;
982
983 case SND_SOC_BIAS_OFF:
984 break;
985 }
986
987 codec->bias_level = level;
988
989 return 0;
990}
991
992
993#define WM8961_RATES SNDRV_PCM_RATE_8000_48000
994
995#define WM8961_FORMATS \
996 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
997 SNDRV_PCM_FMTBIT_S24_LE)
998
999static struct snd_soc_dai_ops wm8961_dai_ops = {
1000 .hw_params = wm8961_hw_params,
1001 .set_sysclk = wm8961_set_sysclk,
1002 .set_fmt = wm8961_set_fmt,
1003 .digital_mute = wm8961_digital_mute,
1004 .set_tristate = wm8961_set_tristate,
1005 .set_clkdiv = wm8961_set_clkdiv,
1006};
1007
1008struct snd_soc_dai wm8961_dai = {
1009 .name = "WM8961",
1010 .playback = {
1011 .stream_name = "HiFi Playback",
1012 .channels_min = 1,
1013 .channels_max = 2,
1014 .rates = WM8961_RATES,
1015 .formats = WM8961_FORMATS,},
1016 .capture = {
1017 .stream_name = "HiFi Capture",
1018 .channels_min = 1,
1019 .channels_max = 2,
1020 .rates = WM8961_RATES,
1021 .formats = WM8961_FORMATS,},
1022 .ops = &wm8961_dai_ops,
1023};
1024EXPORT_SYMBOL_GPL(wm8961_dai);
1025
1026
1027static struct snd_soc_codec *wm8961_codec;
1028
1029static int wm8961_probe(struct platform_device *pdev)
1030{
1031 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1032 struct snd_soc_codec *codec;
1033 int ret = 0;
1034
1035 if (wm8961_codec == NULL) {
1036 dev_err(&pdev->dev, "Codec device not registered\n");
1037 return -ENODEV;
1038 }
1039
1040 socdev->card->codec = wm8961_codec;
1041 codec = wm8961_codec;
1042
1043 /* register pcms */
1044 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1045 if (ret < 0) {
1046 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
1047 goto pcm_err;
1048 }
1049
1050 snd_soc_add_controls(codec, wm8961_snd_controls,
1051 ARRAY_SIZE(wm8961_snd_controls));
1052 snd_soc_dapm_new_controls(codec, wm8961_dapm_widgets,
1053 ARRAY_SIZE(wm8961_dapm_widgets));
1054 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
1055 snd_soc_dapm_new_widgets(codec);
1056
1057 ret = snd_soc_init_card(socdev);
1058 if (ret < 0) {
1059 dev_err(codec->dev, "failed to register card: %d\n", ret);
1060 goto card_err;
1061 }
1062
1063 return ret;
1064
1065card_err:
1066 snd_soc_free_pcms(socdev);
1067 snd_soc_dapm_free(socdev);
1068pcm_err:
1069 return ret;
1070}
1071
1072static int wm8961_remove(struct platform_device *pdev)
1073{
1074 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1075
1076 snd_soc_free_pcms(socdev);
1077 snd_soc_dapm_free(socdev);
1078
1079 return 0;
1080}
1081
1082#ifdef CONFIG_PM
1083static int wm8961_suspend(struct platform_device *pdev, pm_message_t state)
1084{
1085 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1086 struct snd_soc_codec *codec = socdev->card->codec;
1087
1088 wm8961_set_bias_level(codec, SND_SOC_BIAS_OFF);
1089
1090 return 0;
1091}
1092
1093static int wm8961_resume(struct platform_device *pdev)
1094{
1095 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1096 struct snd_soc_codec *codec = socdev->card->codec;
1097 u16 *reg_cache = codec->reg_cache;
1098 int i;
1099
1100 for (i = 0; i < codec->reg_cache_size; i++) {
1101 if (i == WM8961_SOFTWARE_RESET)
1102 continue;
1103
1104 wm8961_write(codec, i, reg_cache[i]);
1105 }
1106
1107 wm8961_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1108
1109 return 0;
1110}
1111#else
1112#define wm8961_suspend NULL
1113#define wm8961_resume NULL
1114#endif
1115
1116struct snd_soc_codec_device soc_codec_dev_wm8961 = {
1117 .probe = wm8961_probe,
1118 .remove = wm8961_remove,
1119 .suspend = wm8961_suspend,
1120 .resume = wm8961_resume,
1121};
1122EXPORT_SYMBOL_GPL(soc_codec_dev_wm8961);
1123
1124static int wm8961_register(struct wm8961_priv *wm8961)
1125{
1126 struct snd_soc_codec *codec = &wm8961->codec;
1127 int ret;
1128 u16 reg;
1129
1130 if (wm8961_codec) {
1131 dev_err(codec->dev, "Another WM8961 is registered\n");
1132 ret = -EINVAL;
1133 goto err;
1134 }
1135
1136 mutex_init(&codec->mutex);
1137 INIT_LIST_HEAD(&codec->dapm_widgets);
1138 INIT_LIST_HEAD(&codec->dapm_paths);
1139
1140 codec->private_data = wm8961;
1141 codec->name = "WM8961";
1142 codec->owner = THIS_MODULE;
1143 codec->read = wm8961_read;
1144 codec->write = wm8961_write;
1145 codec->dai = &wm8961_dai;
1146 codec->num_dai = 1;
1147 codec->reg_cache_size = ARRAY_SIZE(wm8961->reg_cache);
1148 codec->reg_cache = &wm8961->reg_cache;
1149 codec->bias_level = SND_SOC_BIAS_OFF;
1150 codec->set_bias_level = wm8961_set_bias_level;
1151
1152 memcpy(codec->reg_cache, wm8961_reg_defaults,
1153 sizeof(wm8961_reg_defaults));
1154
1155 reg = wm8961_read_hw(codec, WM8961_SOFTWARE_RESET);
1156 if (reg != 0x1801) {
1157 dev_err(codec->dev, "Device is not a WM8961: ID=0x%x\n", reg);
1158 ret = -EINVAL;
1159 goto err;
1160 }
1161
1162 reg = wm8961_read_hw(codec, WM8961_RIGHT_INPUT_VOLUME);
1163 dev_info(codec->dev, "WM8961 family %d revision %c\n",
1164 (reg & WM8961_DEVICE_ID_MASK) >> WM8961_DEVICE_ID_SHIFT,
1165 ((reg & WM8961_CHIP_REV_MASK) >> WM8961_CHIP_REV_SHIFT)
1166 + 'A');
1167
1168 ret = wm8961_reset(codec);
1169 if (ret < 0) {
1170 dev_err(codec->dev, "Failed to issue reset\n");
1171 return ret;
1172 }
1173
1174 /* Enable class W */
1175 reg = wm8961_read(codec, WM8961_CHARGE_PUMP_B);
1176 reg |= WM8961_CP_DYN_PWR_MASK;
1177 wm8961_write(codec, WM8961_CHARGE_PUMP_B, reg);
1178
1179 /* Latch volume update bits (right channel only, we always
1180 * write both out) and default ZC on. */
1181 reg = wm8961_read(codec, WM8961_ROUT1_VOLUME);
1182 wm8961_write(codec, WM8961_ROUT1_VOLUME,
1183 reg | WM8961_LO1ZC | WM8961_OUT1VU);
1184 wm8961_write(codec, WM8961_LOUT1_VOLUME, reg | WM8961_LO1ZC);
1185 reg = wm8961_read(codec, WM8961_ROUT2_VOLUME);
1186 wm8961_write(codec, WM8961_ROUT2_VOLUME,
1187 reg | WM8961_SPKRZC | WM8961_SPKVU);
1188 wm8961_write(codec, WM8961_LOUT2_VOLUME, reg | WM8961_SPKLZC);
1189
1190 reg = wm8961_read(codec, WM8961_RIGHT_ADC_VOLUME);
1191 wm8961_write(codec, WM8961_RIGHT_ADC_VOLUME, reg | WM8961_ADCVU);
1192 reg = wm8961_read(codec, WM8961_RIGHT_INPUT_VOLUME);
1193 wm8961_write(codec, WM8961_RIGHT_INPUT_VOLUME, reg | WM8961_IPVU);
1194
1195 /* Use soft mute by default */
1196 reg = wm8961_read(codec, WM8961_ADC_DAC_CONTROL_2);
1197 reg |= WM8961_DACSMM;
1198 wm8961_write(codec, WM8961_ADC_DAC_CONTROL_2, reg);
1199
1200 /* Use automatic clocking mode by default; for now this is all
1201 * we support.
1202 */
1203 reg = wm8961_read(codec, WM8961_CLOCKING_3);
1204 reg &= ~WM8961_MANUAL_MODE;
1205 wm8961_write(codec, WM8961_CLOCKING_3, reg);
1206
1207 wm8961_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1208
1209 wm8961_dai.dev = codec->dev;
1210
1211 wm8961_codec = codec;
1212
1213 ret = snd_soc_register_codec(codec);
1214 if (ret != 0) {
1215 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
1216 return ret;
1217 }
1218
1219 ret = snd_soc_register_dai(&wm8961_dai);
1220 if (ret != 0) {
1221 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
1222 snd_soc_unregister_codec(codec);
1223 return ret;
1224 }
1225
1226 return 0;
1227
1228err:
1229 kfree(wm8961);
1230 return ret;
1231}
1232
1233static void wm8961_unregister(struct wm8961_priv *wm8961)
1234{
1235 wm8961_set_bias_level(&wm8961->codec, SND_SOC_BIAS_OFF);
1236 snd_soc_unregister_dai(&wm8961_dai);
1237 snd_soc_unregister_codec(&wm8961->codec);
1238 kfree(wm8961);
1239 wm8961_codec = NULL;
1240}
1241
1242static __devinit int wm8961_i2c_probe(struct i2c_client *i2c,
1243 const struct i2c_device_id *id)
1244{
1245 struct wm8961_priv *wm8961;
1246 struct snd_soc_codec *codec;
1247
1248 wm8961 = kzalloc(sizeof(struct wm8961_priv), GFP_KERNEL);
1249 if (wm8961 == NULL)
1250 return -ENOMEM;
1251
1252 codec = &wm8961->codec;
1253 codec->hw_write = (hw_write_t)i2c_master_send;
1254
1255 i2c_set_clientdata(i2c, wm8961);
1256 codec->control_data = i2c;
1257
1258 codec->dev = &i2c->dev;
1259
1260 return wm8961_register(wm8961);
1261}
1262
1263static __devexit int wm8961_i2c_remove(struct i2c_client *client)
1264{
1265 struct wm8961_priv *wm8961 = i2c_get_clientdata(client);
1266 wm8961_unregister(wm8961);
1267 return 0;
1268}
1269
1270static const struct i2c_device_id wm8961_i2c_id[] = {
1271 { "wm8961", 0 },
1272 { }
1273};
1274MODULE_DEVICE_TABLE(i2c, wm8961_i2c_id);
1275
1276static struct i2c_driver wm8961_i2c_driver = {
1277 .driver = {
1278 .name = "wm8961",
1279 .owner = THIS_MODULE,
1280 },
1281 .probe = wm8961_i2c_probe,
1282 .remove = __devexit_p(wm8961_i2c_remove),
1283 .id_table = wm8961_i2c_id,
1284};
1285
1286static int __init wm8961_modinit(void)
1287{
1288 int ret;
1289
1290 ret = i2c_add_driver(&wm8961_i2c_driver);
1291 if (ret != 0) {
1292 printk(KERN_ERR "Failed to register WM8961 I2C driver: %d\n",
1293 ret);
1294 }
1295
1296 return ret;
1297}
1298module_init(wm8961_modinit);
1299
1300static void __exit wm8961_exit(void)
1301{
1302 i2c_del_driver(&wm8961_i2c_driver);
1303}
1304module_exit(wm8961_exit);
1305
1306
1307MODULE_DESCRIPTION("ASoC WM8961 driver");
1308MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1309MODULE_LICENSE("GPL");