2 * wm8904.c -- WM8904 ALSA SoC Audio driver
4 * Copyright 2009 Wolfson Microelectronics plc
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/delay.h>
19 #include <linux/i2c.h>
20 #include <linux/platform_device.h>
21 #include <linux/regulator/consumer.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 #include <sound/wm8904.h>
33 static struct snd_soc_codec *wm8904_codec;
34 struct snd_soc_codec_device soc_codec_dev_wm8904;
36 #define WM8904_NUM_DCS_CHANNELS 4
38 #define WM8904_NUM_SUPPLIES 5
39 static const char *wm8904_supply_names[WM8904_NUM_SUPPLIES] = {
47 /* codec private data */
49 struct snd_soc_codec codec;
50 u16 reg_cache[WM8904_MAX_REGISTER + 1];
52 struct regulator_bulk_data supplies[WM8904_NUM_SUPPLIES];
54 struct wm8904_pdata *pdata;
58 /* Platform provided DRC configuration */
59 const char **drc_texts;
61 struct soc_enum drc_enum;
63 /* Platform provided ReTune mobile configuration */
64 int num_retune_mobile_texts;
65 const char **retune_mobile_texts;
66 int retune_mobile_cfg;
67 struct soc_enum retune_mobile_enum;
74 /* Clocking configuration */
75 unsigned int mclk_rate;
77 unsigned int sysclk_rate;
84 /* DC servo configuration - cached offset values */
85 int dcs_state[WM8904_NUM_DCS_CHANNELS];
88 static const u16 wm8904_reg[WM8904_MAX_REGISTER + 1] = {
89 0x8904, /* R0 - SW Reset and ID */
90 0x0000, /* R1 - Revision */
93 0x0018, /* R4 - Bias Control 0 */
94 0x0000, /* R5 - VMID Control 0 */
95 0x0000, /* R6 - Mic Bias Control 0 */
96 0x0000, /* R7 - Mic Bias Control 1 */
97 0x0001, /* R8 - Analogue DAC 0 */
98 0x9696, /* R9 - mic Filter Control */
99 0x0001, /* R10 - Analogue ADC 0 */
101 0x0000, /* R12 - Power Management 0 */
103 0x0000, /* R14 - Power Management 2 */
104 0x0000, /* R15 - Power Management 3 */
107 0x0000, /* R18 - Power Management 6 */
109 0x945E, /* R20 - Clock Rates 0 */
110 0x0C05, /* R21 - Clock Rates 1 */
111 0x0006, /* R22 - Clock Rates 2 */
113 0x0050, /* R24 - Audio Interface 0 */
114 0x000A, /* R25 - Audio Interface 1 */
115 0x00E4, /* R26 - Audio Interface 2 */
116 0x0040, /* R27 - Audio Interface 3 */
119 0x00C0, /* R30 - DAC Digital Volume Left */
120 0x00C0, /* R31 - DAC Digital Volume Right */
121 0x0000, /* R32 - DAC Digital 0 */
122 0x0008, /* R33 - DAC Digital 1 */
125 0x00C0, /* R36 - ADC Digital Volume Left */
126 0x00C0, /* R37 - ADC Digital Volume Right */
127 0x0010, /* R38 - ADC Digital 0 */
128 0x0000, /* R39 - Digital Microphone 0 */
129 0x01AF, /* R40 - DRC 0 */
130 0x3248, /* R41 - DRC 1 */
131 0x0000, /* R42 - DRC 2 */
132 0x0000, /* R43 - DRC 3 */
133 0x0085, /* R44 - Analogue Left Input 0 */
134 0x0085, /* R45 - Analogue Right Input 0 */
135 0x0044, /* R46 - Analogue Left Input 1 */
136 0x0044, /* R47 - Analogue Right Input 1 */
146 0x002D, /* R57 - Analogue OUT1 Left */
147 0x002D, /* R58 - Analogue OUT1 Right */
148 0x0039, /* R59 - Analogue OUT2 Left */
149 0x0039, /* R60 - Analogue OUT2 Right */
150 0x0000, /* R61 - Analogue OUT12 ZC */
156 0x0000, /* R67 - DC Servo 0 */
157 0x0000, /* R68 - DC Servo 1 */
158 0xAAAA, /* R69 - DC Servo 2 */
160 0xAAAA, /* R71 - DC Servo 4 */
161 0xAAAA, /* R72 - DC Servo 5 */
162 0x0000, /* R73 - DC Servo 6 */
163 0x0000, /* R74 - DC Servo 7 */
164 0x0000, /* R75 - DC Servo 8 */
165 0x0000, /* R76 - DC Servo 9 */
166 0x0000, /* R77 - DC Servo Readback 0 */
179 0x0000, /* R90 - Analogue HP 0 */
183 0x0000, /* R94 - Analogue Lineout 0 */
187 0x0000, /* R98 - Charge Pump 0 */
193 0x0004, /* R104 - Class W 0 */
197 0x0000, /* R108 - Write Sequencer 0 */
198 0x0000, /* R109 - Write Sequencer 1 */
199 0x0000, /* R110 - Write Sequencer 2 */
200 0x0000, /* R111 - Write Sequencer 3 */
201 0x0000, /* R112 - Write Sequencer 4 */
205 0x0000, /* R116 - FLL Control 1 */
206 0x0007, /* R117 - FLL Control 2 */
207 0x0000, /* R118 - FLL Control 3 */
208 0x2EE0, /* R119 - FLL Control 4 */
209 0x0004, /* R120 - FLL Control 5 */
210 0x0014, /* R121 - GPIO Control 1 */
211 0x0010, /* R122 - GPIO Control 2 */
212 0x0010, /* R123 - GPIO Control 3 */
213 0x0000, /* R124 - GPIO Control 4 */
215 0x0000, /* R126 - Digital Pulls */
216 0x0000, /* R127 - Interrupt Status */
217 0xFFFF, /* R128 - Interrupt Status Mask */
218 0x0000, /* R129 - Interrupt Polarity */
219 0x0000, /* R130 - Interrupt Debounce */
223 0x0000, /* R134 - EQ1 */
224 0x000C, /* R135 - EQ2 */
225 0x000C, /* R136 - EQ3 */
226 0x000C, /* R137 - EQ4 */
227 0x000C, /* R138 - EQ5 */
228 0x000C, /* R139 - EQ6 */
229 0x0FCA, /* R140 - EQ7 */
230 0x0400, /* R141 - EQ8 */
231 0x00D8, /* R142 - EQ9 */
232 0x1EB5, /* R143 - EQ10 */
233 0xF145, /* R144 - EQ11 */
234 0x0B75, /* R145 - EQ12 */
235 0x01C5, /* R146 - EQ13 */
236 0x1C58, /* R147 - EQ14 */
237 0xF373, /* R148 - EQ15 */
238 0x0A54, /* R149 - EQ16 */
239 0x0558, /* R150 - EQ17 */
240 0x168E, /* R151 - EQ18 */
241 0xF829, /* R152 - EQ19 */
242 0x07AD, /* R153 - EQ20 */
243 0x1103, /* R154 - EQ21 */
244 0x0564, /* R155 - EQ22 */
245 0x0559, /* R156 - EQ23 */
246 0x4000, /* R157 - EQ24 */
250 0x0000, /* R161 - Control Interface Test 1 */
293 0x0000, /* R204 - Analogue Output Bias 0 */
336 0x0000, /* R247 - FLL NCO Test 0 */
337 0x0019, /* R248 - FLL NCO Test 1 */
344 } wm8904_access[] = {
345 { 0xFFFF, 0xFFFF, 1 }, /* R0 - SW Reset and ID */
346 { 0x0000, 0x0000, 0 }, /* R1 - Revision */
347 { 0x0000, 0x0000, 0 }, /* R2 */
348 { 0x0000, 0x0000, 0 }, /* R3 */
349 { 0x001F, 0x001F, 0 }, /* R4 - Bias Control 0 */
350 { 0x0047, 0x0047, 0 }, /* R5 - VMID Control 0 */
351 { 0x007F, 0x007F, 0 }, /* R6 - Mic Bias Control 0 */
352 { 0xC007, 0xC007, 0 }, /* R7 - Mic Bias Control 1 */
353 { 0x001E, 0x001E, 0 }, /* R8 - Analogue DAC 0 */
354 { 0xFFFF, 0xFFFF, 0 }, /* R9 - mic Filter Control */
355 { 0x0001, 0x0001, 0 }, /* R10 - Analogue ADC 0 */
356 { 0x0000, 0x0000, 0 }, /* R11 */
357 { 0x0003, 0x0003, 0 }, /* R12 - Power Management 0 */
358 { 0x0000, 0x0000, 0 }, /* R13 */
359 { 0x0003, 0x0003, 0 }, /* R14 - Power Management 2 */
360 { 0x0003, 0x0003, 0 }, /* R15 - Power Management 3 */
361 { 0x0000, 0x0000, 0 }, /* R16 */
362 { 0x0000, 0x0000, 0 }, /* R17 */
363 { 0x000F, 0x000F, 0 }, /* R18 - Power Management 6 */
364 { 0x0000, 0x0000, 0 }, /* R19 */
365 { 0x7001, 0x7001, 0 }, /* R20 - Clock Rates 0 */
366 { 0x3C07, 0x3C07, 0 }, /* R21 - Clock Rates 1 */
367 { 0xD00F, 0xD00F, 0 }, /* R22 - Clock Rates 2 */
368 { 0x0000, 0x0000, 0 }, /* R23 */
369 { 0x1FFF, 0x1FFF, 0 }, /* R24 - Audio Interface 0 */
370 { 0x3DDF, 0x3DDF, 0 }, /* R25 - Audio Interface 1 */
371 { 0x0F1F, 0x0F1F, 0 }, /* R26 - Audio Interface 2 */
372 { 0x0FFF, 0x0FFF, 0 }, /* R27 - Audio Interface 3 */
373 { 0x0000, 0x0000, 0 }, /* R28 */
374 { 0x0000, 0x0000, 0 }, /* R29 */
375 { 0x00FF, 0x01FF, 0 }, /* R30 - DAC Digital Volume Left */
376 { 0x00FF, 0x01FF, 0 }, /* R31 - DAC Digital Volume Right */
377 { 0x0FFF, 0x0FFF, 0 }, /* R32 - DAC Digital 0 */
378 { 0x1E4E, 0x1E4E, 0 }, /* R33 - DAC Digital 1 */
379 { 0x0000, 0x0000, 0 }, /* R34 */
380 { 0x0000, 0x0000, 0 }, /* R35 */
381 { 0x00FF, 0x01FF, 0 }, /* R36 - ADC Digital Volume Left */
382 { 0x00FF, 0x01FF, 0 }, /* R37 - ADC Digital Volume Right */
383 { 0x0073, 0x0073, 0 }, /* R38 - ADC Digital 0 */
384 { 0x1800, 0x1800, 0 }, /* R39 - Digital Microphone 0 */
385 { 0xDFEF, 0xDFEF, 0 }, /* R40 - DRC 0 */
386 { 0xFFFF, 0xFFFF, 0 }, /* R41 - DRC 1 */
387 { 0x003F, 0x003F, 0 }, /* R42 - DRC 2 */
388 { 0x07FF, 0x07FF, 0 }, /* R43 - DRC 3 */
389 { 0x009F, 0x009F, 0 }, /* R44 - Analogue Left Input 0 */
390 { 0x009F, 0x009F, 0 }, /* R45 - Analogue Right Input 0 */
391 { 0x007F, 0x007F, 0 }, /* R46 - Analogue Left Input 1 */
392 { 0x007F, 0x007F, 0 }, /* R47 - Analogue Right Input 1 */
393 { 0x0000, 0x0000, 0 }, /* R48 */
394 { 0x0000, 0x0000, 0 }, /* R49 */
395 { 0x0000, 0x0000, 0 }, /* R50 */
396 { 0x0000, 0x0000, 0 }, /* R51 */
397 { 0x0000, 0x0000, 0 }, /* R52 */
398 { 0x0000, 0x0000, 0 }, /* R53 */
399 { 0x0000, 0x0000, 0 }, /* R54 */
400 { 0x0000, 0x0000, 0 }, /* R55 */
401 { 0x0000, 0x0000, 0 }, /* R56 */
402 { 0x017F, 0x01FF, 0 }, /* R57 - Analogue OUT1 Left */
403 { 0x017F, 0x01FF, 0 }, /* R58 - Analogue OUT1 Right */
404 { 0x017F, 0x01FF, 0 }, /* R59 - Analogue OUT2 Left */
405 { 0x017F, 0x01FF, 0 }, /* R60 - Analogue OUT2 Right */
406 { 0x000F, 0x000F, 0 }, /* R61 - Analogue OUT12 ZC */
407 { 0x0000, 0x0000, 0 }, /* R62 */
408 { 0x0000, 0x0000, 0 }, /* R63 */
409 { 0x0000, 0x0000, 0 }, /* R64 */
410 { 0x0000, 0x0000, 0 }, /* R65 */
411 { 0x0000, 0x0000, 0 }, /* R66 */
412 { 0x000F, 0x000F, 0 }, /* R67 - DC Servo 0 */
413 { 0xFFFF, 0xFFFF, 1 }, /* R68 - DC Servo 1 */
414 { 0x0F0F, 0x0F0F, 0 }, /* R69 - DC Servo 2 */
415 { 0x0000, 0x0000, 0 }, /* R70 */
416 { 0x007F, 0x007F, 0 }, /* R71 - DC Servo 4 */
417 { 0x007F, 0x007F, 0 }, /* R72 - DC Servo 5 */
418 { 0x00FF, 0x00FF, 1 }, /* R73 - DC Servo 6 */
419 { 0x00FF, 0x00FF, 1 }, /* R74 - DC Servo 7 */
420 { 0x00FF, 0x00FF, 1 }, /* R75 - DC Servo 8 */
421 { 0x00FF, 0x00FF, 1 }, /* R76 - DC Servo 9 */
422 { 0x0FFF, 0x0000, 1 }, /* R77 - DC Servo Readback 0 */
423 { 0x0000, 0x0000, 0 }, /* R78 */
424 { 0x0000, 0x0000, 0 }, /* R79 */
425 { 0x0000, 0x0000, 0 }, /* R80 */
426 { 0x0000, 0x0000, 0 }, /* R81 */
427 { 0x0000, 0x0000, 0 }, /* R82 */
428 { 0x0000, 0x0000, 0 }, /* R83 */
429 { 0x0000, 0x0000, 0 }, /* R84 */
430 { 0x0000, 0x0000, 0 }, /* R85 */
431 { 0x0000, 0x0000, 0 }, /* R86 */
432 { 0x0000, 0x0000, 0 }, /* R87 */
433 { 0x0000, 0x0000, 0 }, /* R88 */
434 { 0x0000, 0x0000, 0 }, /* R89 */
435 { 0x00FF, 0x00FF, 0 }, /* R90 - Analogue HP 0 */
436 { 0x0000, 0x0000, 0 }, /* R91 */
437 { 0x0000, 0x0000, 0 }, /* R92 */
438 { 0x0000, 0x0000, 0 }, /* R93 */
439 { 0x00FF, 0x00FF, 0 }, /* R94 - Analogue Lineout 0 */
440 { 0x0000, 0x0000, 0 }, /* R95 */
441 { 0x0000, 0x0000, 0 }, /* R96 */
442 { 0x0000, 0x0000, 0 }, /* R97 */
443 { 0x0001, 0x0001, 0 }, /* R98 - Charge Pump 0 */
444 { 0x0000, 0x0000, 0 }, /* R99 */
445 { 0x0000, 0x0000, 0 }, /* R100 */
446 { 0x0000, 0x0000, 0 }, /* R101 */
447 { 0x0000, 0x0000, 0 }, /* R102 */
448 { 0x0000, 0x0000, 0 }, /* R103 */
449 { 0x0001, 0x0001, 0 }, /* R104 - Class W 0 */
450 { 0x0000, 0x0000, 0 }, /* R105 */
451 { 0x0000, 0x0000, 0 }, /* R106 */
452 { 0x0000, 0x0000, 0 }, /* R107 */
453 { 0x011F, 0x011F, 0 }, /* R108 - Write Sequencer 0 */
454 { 0x7FFF, 0x7FFF, 0 }, /* R109 - Write Sequencer 1 */
455 { 0x4FFF, 0x4FFF, 0 }, /* R110 - Write Sequencer 2 */
456 { 0x003F, 0x033F, 0 }, /* R111 - Write Sequencer 3 */
457 { 0x03F1, 0x0000, 0 }, /* R112 - Write Sequencer 4 */
458 { 0x0000, 0x0000, 0 }, /* R113 */
459 { 0x0000, 0x0000, 0 }, /* R114 */
460 { 0x0000, 0x0000, 0 }, /* R115 */
461 { 0x0007, 0x0007, 0 }, /* R116 - FLL Control 1 */
462 { 0x3F77, 0x3F77, 0 }, /* R117 - FLL Control 2 */
463 { 0xFFFF, 0xFFFF, 0 }, /* R118 - FLL Control 3 */
464 { 0x7FEF, 0x7FEF, 0 }, /* R119 - FLL Control 4 */
465 { 0x001B, 0x001B, 0 }, /* R120 - FLL Control 5 */
466 { 0x003F, 0x003F, 0 }, /* R121 - GPIO Control 1 */
467 { 0x003F, 0x003F, 0 }, /* R122 - GPIO Control 2 */
468 { 0x003F, 0x003F, 0 }, /* R123 - GPIO Control 3 */
469 { 0x038F, 0x038F, 0 }, /* R124 - GPIO Control 4 */
470 { 0x0000, 0x0000, 0 }, /* R125 */
471 { 0x00FF, 0x00FF, 0 }, /* R126 - Digital Pulls */
472 { 0x07FF, 0x03FF, 1 }, /* R127 - Interrupt Status */
473 { 0x03FF, 0x03FF, 0 }, /* R128 - Interrupt Status Mask */
474 { 0x03FF, 0x03FF, 0 }, /* R129 - Interrupt Polarity */
475 { 0x03FF, 0x03FF, 0 }, /* R130 - Interrupt Debounce */
476 { 0x0000, 0x0000, 0 }, /* R131 */
477 { 0x0000, 0x0000, 0 }, /* R132 */
478 { 0x0000, 0x0000, 0 }, /* R133 */
479 { 0x0001, 0x0001, 0 }, /* R134 - EQ1 */
480 { 0x001F, 0x001F, 0 }, /* R135 - EQ2 */
481 { 0x001F, 0x001F, 0 }, /* R136 - EQ3 */
482 { 0x001F, 0x001F, 0 }, /* R137 - EQ4 */
483 { 0x001F, 0x001F, 0 }, /* R138 - EQ5 */
484 { 0x001F, 0x001F, 0 }, /* R139 - EQ6 */
485 { 0xFFFF, 0xFFFF, 0 }, /* R140 - EQ7 */
486 { 0xFFFF, 0xFFFF, 0 }, /* R141 - EQ8 */
487 { 0xFFFF, 0xFFFF, 0 }, /* R142 - EQ9 */
488 { 0xFFFF, 0xFFFF, 0 }, /* R143 - EQ10 */
489 { 0xFFFF, 0xFFFF, 0 }, /* R144 - EQ11 */
490 { 0xFFFF, 0xFFFF, 0 }, /* R145 - EQ12 */
491 { 0xFFFF, 0xFFFF, 0 }, /* R146 - EQ13 */
492 { 0xFFFF, 0xFFFF, 0 }, /* R147 - EQ14 */
493 { 0xFFFF, 0xFFFF, 0 }, /* R148 - EQ15 */
494 { 0xFFFF, 0xFFFF, 0 }, /* R149 - EQ16 */
495 { 0xFFFF, 0xFFFF, 0 }, /* R150 - EQ17 */
496 { 0xFFFF, 0xFFFF, 0 }, /* R151wm8523_dai - EQ18 */
497 { 0xFFFF, 0xFFFF, 0 }, /* R152 - EQ19 */
498 { 0xFFFF, 0xFFFF, 0 }, /* R153 - EQ20 */
499 { 0xFFFF, 0xFFFF, 0 }, /* R154 - EQ21 */
500 { 0xFFFF, 0xFFFF, 0 }, /* R155 - EQ22 */
501 { 0xFFFF, 0xFFFF, 0 }, /* R156 - EQ23 */
502 { 0xFFFF, 0xFFFF, 0 }, /* R157 - EQ24 */
503 { 0x0000, 0x0000, 0 }, /* R158 */
504 { 0x0000, 0x0000, 0 }, /* R159 */
505 { 0x0000, 0x0000, 0 }, /* R160 */
506 { 0x0002, 0x0002, 0 }, /* R161 - Control Interface Test 1 */
507 { 0x0000, 0x0000, 0 }, /* R162 */
508 { 0x0000, 0x0000, 0 }, /* R163 */
509 { 0x0000, 0x0000, 0 }, /* R164 */
510 { 0x0000, 0x0000, 0 }, /* R165 */
511 { 0x0000, 0x0000, 0 }, /* R166 */
512 { 0x0000, 0x0000, 0 }, /* R167 */
513 { 0x0000, 0x0000, 0 }, /* R168 */
514 { 0x0000, 0x0000, 0 }, /* R169 */
515 { 0x0000, 0x0000, 0 }, /* R170 */
516 { 0x0000, 0x0000, 0 }, /* R171 */
517 { 0x0000, 0x0000, 0 }, /* R172 */
518 { 0x0000, 0x0000, 0 }, /* R173 */
519 { 0x0000, 0x0000, 0 }, /* R174 */
520 { 0x0000, 0x0000, 0 }, /* R175 */
521 { 0x0000, 0x0000, 0 }, /* R176 */
522 { 0x0000, 0x0000, 0 }, /* R177 */
523 { 0x0000, 0x0000, 0 }, /* R178 */
524 { 0x0000, 0x0000, 0 }, /* R179 */
525 { 0x0000, 0x0000, 0 }, /* R180 */
526 { 0x0000, 0x0000, 0 }, /* R181 */
527 { 0x0000, 0x0000, 0 }, /* R182 */
528 { 0x0000, 0x0000, 0 }, /* R183 */
529 { 0x0000, 0x0000, 0 }, /* R184 */
530 { 0x0000, 0x0000, 0 }, /* R185 */
531 { 0x0000, 0x0000, 0 }, /* R186 */
532 { 0x0000, 0x0000, 0 }, /* R187 */
533 { 0x0000, 0x0000, 0 }, /* R188 */
534 { 0x0000, 0x0000, 0 }, /* R189 */
535 { 0x0000, 0x0000, 0 }, /* R190 */
536 { 0x0000, 0x0000, 0 }, /* R191 */
537 { 0x0000, 0x0000, 0 }, /* R192 */
538 { 0x0000, 0x0000, 0 }, /* R193 */
539 { 0x0000, 0x0000, 0 }, /* R194 */
540 { 0x0000, 0x0000, 0 }, /* R195 */
541 { 0x0000, 0x0000, 0 }, /* R196 */
542 { 0x0000, 0x0000, 0 }, /* R197 */
543 { 0x0000, 0x0000, 0 }, /* R198 */
544 { 0x0000, 0x0000, 0 }, /* R199 */
545 { 0x0000, 0x0000, 0 }, /* R200 */
546 { 0x0000, 0x0000, 0 }, /* R201 */
547 { 0x0000, 0x0000, 0 }, /* R202 */
548 { 0x0000, 0x0000, 0 }, /* R203 */
549 { 0x0070, 0x0070, 0 }, /* R204 - Analogue Output Bias 0 */
550 { 0x0000, 0x0000, 0 }, /* R205 */
551 { 0x0000, 0x0000, 0 }, /* R206 */
552 { 0x0000, 0x0000, 0 }, /* R207 */
553 { 0x0000, 0x0000, 0 }, /* R208 */
554 { 0x0000, 0x0000, 0 }, /* R209 */
555 { 0x0000, 0x0000, 0 }, /* R210 */
556 { 0x0000, 0x0000, 0 }, /* R211 */
557 { 0x0000, 0x0000, 0 }, /* R212 */
558 { 0x0000, 0x0000, 0 }, /* R213 */
559 { 0x0000, 0x0000, 0 }, /* R214 */
560 { 0x0000, 0x0000, 0 }, /* R215 */
561 { 0x0000, 0x0000, 0 }, /* R216 */
562 { 0x0000, 0x0000, 0 }, /* R217 */
563 { 0x0000, 0x0000, 0 }, /* R218 */
564 { 0x0000, 0x0000, 0 }, /* R219 */
565 { 0x0000, 0x0000, 0 }, /* R220 */
566 { 0x0000, 0x0000, 0 }, /* R221 */
567 { 0x0000, 0x0000, 0 }, /* R222 */
568 { 0x0000, 0x0000, 0 }, /* R223 */
569 { 0x0000, 0x0000, 0 }, /* R224 */
570 { 0x0000, 0x0000, 0 }, /* R225 */
571 { 0x0000, 0x0000, 0 }, /* R226 */
572 { 0x0000, 0x0000, 0 }, /* R227 */
573 { 0x0000, 0x0000, 0 }, /* R228 */
574 { 0x0000, 0x0000, 0 }, /* R229 */
575 { 0x0000, 0x0000, 0 }, /* R230 */
576 { 0x0000, 0x0000, 0 }, /* R231 */
577 { 0x0000, 0x0000, 0 }, /* R232 */
578 { 0x0000, 0x0000, 0 }, /* R233 */
579 { 0x0000, 0x0000, 0 }, /* R234 */
580 { 0x0000, 0x0000, 0 }, /* R235 */
581 { 0x0000, 0x0000, 0 }, /* R236 */
582 { 0x0000, 0x0000, 0 }, /* R237 */
583 { 0x0000, 0x0000, 0 }, /* R238 */
584 { 0x0000, 0x0000, 0 }, /* R239 */
585 { 0x0000, 0x0000, 0 }, /* R240 */
586 { 0x0000, 0x0000, 0 }, /* R241 */
587 { 0x0000, 0x0000, 0 }, /* R242 */
588 { 0x0000, 0x0000, 0 }, /* R243 */
589 { 0x0000, 0x0000, 0 }, /* R244 */
590 { 0x0000, 0x0000, 0 }, /* R245 */
591 { 0x0000, 0x0000, 0 }, /* R246 */
592 { 0x0001, 0x0001, 0 }, /* R247 - FLL NCO Test 0 */
593 { 0x003F, 0x003F, 0 }, /* R248 - FLL NCO Test 1 */
596 static int wm8904_volatile_register(unsigned int reg)
598 return wm8904_access[reg].vol;
601 static int wm8904_reset(struct snd_soc_codec *codec)
603 return snd_soc_write(codec, WM8904_SW_RESET_AND_ID, 0);
606 static int wm8904_configure_clocking(struct snd_soc_codec *codec)
608 struct wm8904_priv *wm8904 = codec->private_data;
609 unsigned int clock0, clock2, rate;
611 /* Gate the clock while we're updating to avoid misclocking */
612 clock2 = snd_soc_read(codec, WM8904_CLOCK_RATES_2);
613 snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
614 WM8904_SYSCLK_SRC, 0);
616 /* This should be done on init() for bypass paths */
617 switch (wm8904->sysclk_src) {
618 case WM8904_CLK_MCLK:
619 dev_dbg(codec->dev, "Using %dHz MCLK\n", wm8904->mclk_rate);
621 clock2 &= ~WM8904_SYSCLK_SRC;
622 rate = wm8904->mclk_rate;
624 /* Ensure the FLL is stopped */
625 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
626 WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
630 dev_dbg(codec->dev, "Using %dHz FLL clock\n",
633 clock2 |= WM8904_SYSCLK_SRC;
634 rate = wm8904->fll_fout;
638 dev_err(codec->dev, "System clock not configured\n");
642 /* SYSCLK shouldn't be over 13.5MHz */
643 if (rate > 13500000) {
644 clock0 = WM8904_MCLK_DIV;
645 wm8904->sysclk_rate = rate / 2;
648 wm8904->sysclk_rate = rate;
651 snd_soc_update_bits(codec, WM8904_CLOCK_RATES_0, WM8904_MCLK_DIV,
654 snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
655 WM8904_CLK_SYS_ENA | WM8904_SYSCLK_SRC, clock2);
657 dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm8904->sysclk_rate);
662 static void wm8904_set_drc(struct snd_soc_codec *codec)
664 struct wm8904_priv *wm8904 = codec->private_data;
665 struct wm8904_pdata *pdata = wm8904->pdata;
668 /* Save any enables; the configuration should clear them. */
669 save = snd_soc_read(codec, WM8904_DRC_0);
671 for (i = 0; i < WM8904_DRC_REGS; i++)
672 snd_soc_update_bits(codec, WM8904_DRC_0 + i, 0xffff,
673 pdata->drc_cfgs[wm8904->drc_cfg].regs[i]);
675 /* Reenable the DRC */
676 snd_soc_update_bits(codec, WM8904_DRC_0,
677 WM8904_DRC_ENA | WM8904_DRC_DAC_PATH, save);
680 static int wm8904_put_drc_enum(struct snd_kcontrol *kcontrol,
681 struct snd_ctl_elem_value *ucontrol)
683 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
684 struct wm8904_priv *wm8904 = codec->private_data;
685 struct wm8904_pdata *pdata = wm8904->pdata;
686 int value = ucontrol->value.integer.value[0];
688 if (value >= pdata->num_drc_cfgs)
691 wm8904->drc_cfg = value;
693 wm8904_set_drc(codec);
698 static int wm8904_get_drc_enum(struct snd_kcontrol *kcontrol,
699 struct snd_ctl_elem_value *ucontrol)
701 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
702 struct wm8904_priv *wm8904 = codec->private_data;
704 ucontrol->value.enumerated.item[0] = wm8904->drc_cfg;
709 static void wm8904_set_retune_mobile(struct snd_soc_codec *codec)
711 struct wm8904_priv *wm8904 = codec->private_data;
712 struct wm8904_pdata *pdata = wm8904->pdata;
713 int best, best_val, save, i, cfg;
715 if (!pdata || !wm8904->num_retune_mobile_texts)
718 /* Find the version of the currently selected configuration
719 * with the nearest sample rate. */
720 cfg = wm8904->retune_mobile_cfg;
723 for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) {
724 if (strcmp(pdata->retune_mobile_cfgs[i].name,
725 wm8904->retune_mobile_texts[cfg]) == 0 &&
726 abs(pdata->retune_mobile_cfgs[i].rate
727 - wm8904->fs) < best_val) {
729 best_val = abs(pdata->retune_mobile_cfgs[i].rate
734 dev_dbg(codec->dev, "ReTune Mobile %s/%dHz for %dHz sample rate\n",
735 pdata->retune_mobile_cfgs[best].name,
736 pdata->retune_mobile_cfgs[best].rate,
739 /* The EQ will be disabled while reconfiguring it, remember the
740 * current configuration.
742 save = snd_soc_read(codec, WM8904_EQ1);
744 for (i = 0; i < WM8904_EQ_REGS; i++)
745 snd_soc_update_bits(codec, WM8904_EQ1 + i, 0xffff,
746 pdata->retune_mobile_cfgs[best].regs[i]);
748 snd_soc_update_bits(codec, WM8904_EQ1, WM8904_EQ_ENA, save);
751 static int wm8904_put_retune_mobile_enum(struct snd_kcontrol *kcontrol,
752 struct snd_ctl_elem_value *ucontrol)
754 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
755 struct wm8904_priv *wm8904 = codec->private_data;
756 struct wm8904_pdata *pdata = wm8904->pdata;
757 int value = ucontrol->value.integer.value[0];
759 if (value >= pdata->num_retune_mobile_cfgs)
762 wm8904->retune_mobile_cfg = value;
764 wm8904_set_retune_mobile(codec);
769 static int wm8904_get_retune_mobile_enum(struct snd_kcontrol *kcontrol,
770 struct snd_ctl_elem_value *ucontrol)
772 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
773 struct wm8904_priv *wm8904 = codec->private_data;
775 ucontrol->value.enumerated.item[0] = wm8904->retune_mobile_cfg;
780 static int deemph_settings[] = { 0, 32000, 44100, 48000 };
782 static int wm8904_set_deemph(struct snd_soc_codec *codec)
784 struct wm8904_priv *wm8904 = codec->private_data;
787 /* If we're using deemphasis select the nearest available sample
790 if (wm8904->deemph) {
792 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
793 if (abs(deemph_settings[i] - wm8904->fs) <
794 abs(deemph_settings[best] - wm8904->fs))
798 val = best << WM8904_DEEMPH_SHIFT;
803 dev_dbg(codec->dev, "Set deemphasis %d\n", val);
805 return snd_soc_update_bits(codec, WM8904_DAC_DIGITAL_1,
806 WM8904_DEEMPH_MASK, val);
809 static int wm8904_get_deemph(struct snd_kcontrol *kcontrol,
810 struct snd_ctl_elem_value *ucontrol)
812 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
813 struct wm8904_priv *wm8904 = codec->private_data;
815 return wm8904->deemph;
818 static int wm8904_put_deemph(struct snd_kcontrol *kcontrol,
819 struct snd_ctl_elem_value *ucontrol)
821 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
822 struct wm8904_priv *wm8904 = codec->private_data;
823 int deemph = ucontrol->value.enumerated.item[0];
828 wm8904->deemph = deemph;
830 return wm8904_set_deemph(codec);
833 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
834 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
835 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
836 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
837 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
839 static const char *input_mode_text[] = {
840 "Single-Ended", "Differential Line", "Differential Mic"
843 static const struct soc_enum lin_mode =
844 SOC_ENUM_SINGLE(WM8904_ANALOGUE_LEFT_INPUT_1, 0, 3, input_mode_text);
846 static const struct soc_enum rin_mode =
847 SOC_ENUM_SINGLE(WM8904_ANALOGUE_RIGHT_INPUT_1, 0, 3, input_mode_text);
849 static const char *hpf_mode_text[] = {
850 "Hi-fi", "Voice 1", "Voice 2", "Voice 3"
853 static const struct soc_enum hpf_mode =
854 SOC_ENUM_SINGLE(WM8904_ADC_DIGITAL_0, 5, 4, hpf_mode_text);
856 static const struct snd_kcontrol_new wm8904_adc_snd_controls[] = {
857 SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8904_ADC_DIGITAL_VOLUME_LEFT,
858 WM8904_ADC_DIGITAL_VOLUME_RIGHT, 1, 119, 0, digital_tlv),
860 SOC_ENUM("Left Caputure Mode", lin_mode),
861 SOC_ENUM("Right Capture Mode", rin_mode),
863 /* No TLV since it depends on mode */
864 SOC_DOUBLE_R("Capture Volume", WM8904_ANALOGUE_LEFT_INPUT_0,
865 WM8904_ANALOGUE_RIGHT_INPUT_0, 0, 31, 0),
866 SOC_DOUBLE_R("Capture Switch", WM8904_ANALOGUE_LEFT_INPUT_0,
867 WM8904_ANALOGUE_RIGHT_INPUT_0, 7, 1, 0),
869 SOC_SINGLE("High Pass Filter Switch", WM8904_ADC_DIGITAL_0, 4, 1, 0),
870 SOC_ENUM("High Pass Filter Mode", hpf_mode),
872 SOC_SINGLE("ADC 128x OSR Switch", WM8904_ANALOGUE_ADC_0, 0, 1, 0),
875 static const char *drc_path_text[] = {
879 static const struct soc_enum drc_path =
880 SOC_ENUM_SINGLE(WM8904_DRC_0, 14, 2, drc_path_text);
882 static const struct snd_kcontrol_new wm8904_dac_snd_controls[] = {
883 SOC_SINGLE_TLV("Digital Playback Boost Volume",
884 WM8904_AUDIO_INTERFACE_0, 9, 3, 0, dac_boost_tlv),
885 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8904_DAC_DIGITAL_VOLUME_LEFT,
886 WM8904_DAC_DIGITAL_VOLUME_RIGHT, 1, 96, 0, digital_tlv),
888 SOC_DOUBLE_R_TLV("Headphone Volume", WM8904_ANALOGUE_OUT1_LEFT,
889 WM8904_ANALOGUE_OUT1_RIGHT, 0, 63, 0, out_tlv),
890 SOC_DOUBLE_R("Headphone Switch", WM8904_ANALOGUE_OUT1_LEFT,
891 WM8904_ANALOGUE_OUT1_RIGHT, 8, 1, 1),
892 SOC_DOUBLE_R("Headphone ZC Switch", WM8904_ANALOGUE_OUT1_LEFT,
893 WM8904_ANALOGUE_OUT1_RIGHT, 6, 1, 0),
895 SOC_DOUBLE_R_TLV("Line Output Volume", WM8904_ANALOGUE_OUT2_LEFT,
896 WM8904_ANALOGUE_OUT2_RIGHT, 0, 63, 0, out_tlv),
897 SOC_DOUBLE_R("Line Output Switch", WM8904_ANALOGUE_OUT2_LEFT,
898 WM8904_ANALOGUE_OUT2_RIGHT, 8, 1, 1),
899 SOC_DOUBLE_R("Line Output ZC Switch", WM8904_ANALOGUE_OUT2_LEFT,
900 WM8904_ANALOGUE_OUT2_RIGHT, 6, 1, 0),
902 SOC_SINGLE("EQ Switch", WM8904_EQ1, 0, 1, 0),
903 SOC_SINGLE("DRC Switch", WM8904_DRC_0, 15, 1, 0),
904 SOC_ENUM("DRC Path", drc_path),
905 SOC_SINGLE("DAC OSRx2 Switch", WM8904_DAC_DIGITAL_1, 6, 1, 0),
906 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
907 wm8904_get_deemph, wm8904_put_deemph),
910 static const struct snd_kcontrol_new wm8904_snd_controls[] = {
911 SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8904_DAC_DIGITAL_0, 4, 8, 15, 0,
915 static const struct snd_kcontrol_new wm8904_eq_controls[] = {
916 SOC_SINGLE_TLV("EQ1 Volume", WM8904_EQ2, 0, 24, 0, eq_tlv),
917 SOC_SINGLE_TLV("EQ2 Volume", WM8904_EQ3, 0, 24, 0, eq_tlv),
918 SOC_SINGLE_TLV("EQ3 Volume", WM8904_EQ4, 0, 24, 0, eq_tlv),
919 SOC_SINGLE_TLV("EQ4 Volume", WM8904_EQ5, 0, 24, 0, eq_tlv),
920 SOC_SINGLE_TLV("EQ5 Volume", WM8904_EQ6, 0, 24, 0, eq_tlv),
923 static int cp_event(struct snd_soc_dapm_widget *w,
924 struct snd_kcontrol *kcontrol, int event)
926 BUG_ON(event != SND_SOC_DAPM_POST_PMU);
928 /* Maximum startup time */
934 static int sysclk_event(struct snd_soc_dapm_widget *w,
935 struct snd_kcontrol *kcontrol, int event)
937 struct snd_soc_codec *codec = w->codec;
938 struct wm8904_priv *wm8904 = codec->private_data;
941 case SND_SOC_DAPM_PRE_PMU:
942 /* If we're using the FLL then we only start it when
943 * required; we assume that the configuration has been
944 * done previously and all we need to do is kick it
947 switch (wm8904->sysclk_src) {
949 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
953 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
963 case SND_SOC_DAPM_POST_PMD:
964 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
965 WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
972 static int out_pga_event(struct snd_soc_dapm_widget *w,
973 struct snd_kcontrol *kcontrol, int event)
975 struct snd_soc_codec *codec = w->codec;
976 struct wm8904_priv *wm8904 = codec->private_data;
980 int dcs_l_reg, dcs_r_reg;
983 /* This code is shared between HP and LINEOUT; we do all our
984 * power management in stereo pairs to avoid latency issues so
985 * we reuse shift to identify which rather than strcmp() the
990 case WM8904_ANALOGUE_HP_0:
991 dcs_mask = WM8904_DCS_ENA_CHAN_0 | WM8904_DCS_ENA_CHAN_1;
992 dcs_r_reg = WM8904_DC_SERVO_8;
993 dcs_l_reg = WM8904_DC_SERVO_9;
997 case WM8904_ANALOGUE_LINEOUT_0:
998 dcs_mask = WM8904_DCS_ENA_CHAN_2 | WM8904_DCS_ENA_CHAN_3;
999 dcs_r_reg = WM8904_DC_SERVO_6;
1000 dcs_l_reg = WM8904_DC_SERVO_7;
1010 case SND_SOC_DAPM_POST_PMU:
1011 /* Power on the amplifier */
1012 snd_soc_update_bits(codec, reg,
1013 WM8904_HPL_ENA | WM8904_HPR_ENA,
1014 WM8904_HPL_ENA | WM8904_HPR_ENA);
1016 /* Enable the first stage */
1017 snd_soc_update_bits(codec, reg,
1018 WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY,
1019 WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY);
1021 /* Power up the DC servo */
1022 snd_soc_update_bits(codec, WM8904_DC_SERVO_0,
1023 dcs_mask, dcs_mask);
1025 /* Either calibrate the DC servo or restore cached state
1028 if (wm8904->dcs_state[dcs_l] || wm8904->dcs_state[dcs_r]) {
1029 dev_dbg(codec->dev, "Restoring DC servo state\n");
1031 snd_soc_write(codec, dcs_l_reg,
1032 wm8904->dcs_state[dcs_l]);
1033 snd_soc_write(codec, dcs_r_reg,
1034 wm8904->dcs_state[dcs_r]);
1036 snd_soc_write(codec, WM8904_DC_SERVO_1, dcs_mask);
1040 dev_dbg(codec->dev, "Calibrating DC servo\n");
1042 snd_soc_write(codec, WM8904_DC_SERVO_1,
1043 dcs_mask << WM8904_DCS_TRIG_STARTUP_0_SHIFT);
1048 /* Wait for DC servo to complete */
1049 dcs_mask <<= WM8904_DCS_CAL_COMPLETE_SHIFT;
1051 val = snd_soc_read(codec, WM8904_DC_SERVO_READBACK_0);
1052 if ((val & dcs_mask) == dcs_mask)
1056 } while (--timeout);
1058 if ((val & dcs_mask) != dcs_mask)
1059 dev_warn(codec->dev, "DC servo timed out\n");
1061 dev_dbg(codec->dev, "DC servo ready\n");
1063 /* Enable the output stage */
1064 snd_soc_update_bits(codec, reg,
1065 WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP,
1066 WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP);
1068 /* Unshort the output itself */
1069 snd_soc_update_bits(codec, reg,
1070 WM8904_HPL_RMV_SHORT |
1071 WM8904_HPR_RMV_SHORT,
1072 WM8904_HPL_RMV_SHORT |
1073 WM8904_HPR_RMV_SHORT);
1077 case SND_SOC_DAPM_PRE_PMD:
1078 /* Short the output */
1079 snd_soc_update_bits(codec, reg,
1080 WM8904_HPL_RMV_SHORT |
1081 WM8904_HPR_RMV_SHORT, 0);
1083 /* Cache the DC servo configuration; this will be
1084 * invalidated if we change the configuration. */
1085 wm8904->dcs_state[dcs_l] = snd_soc_read(codec, dcs_l_reg);
1086 wm8904->dcs_state[dcs_r] = snd_soc_read(codec, dcs_r_reg);
1088 snd_soc_update_bits(codec, WM8904_DC_SERVO_0,
1091 /* Disable the amplifier input and output stages */
1092 snd_soc_update_bits(codec, reg,
1093 WM8904_HPL_ENA | WM8904_HPR_ENA |
1094 WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY |
1095 WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP,
1103 static const char *lin_text[] = {
1104 "IN1L", "IN2L", "IN3L"
1107 static const struct soc_enum lin_enum =
1108 SOC_ENUM_SINGLE(WM8904_ANALOGUE_LEFT_INPUT_1, 2, 3, lin_text);
1110 static const struct snd_kcontrol_new lin_mux =
1111 SOC_DAPM_ENUM("Left Capture Mux", lin_enum);
1113 static const struct soc_enum lin_inv_enum =
1114 SOC_ENUM_SINGLE(WM8904_ANALOGUE_LEFT_INPUT_1, 4, 3, lin_text);
1116 static const struct snd_kcontrol_new lin_inv_mux =
1117 SOC_DAPM_ENUM("Left Capture Inveting Mux", lin_inv_enum);
1119 static const char *rin_text[] = {
1120 "IN1R", "IN2R", "IN3R"
1123 static const struct soc_enum rin_enum =
1124 SOC_ENUM_SINGLE(WM8904_ANALOGUE_RIGHT_INPUT_1, 2, 3, rin_text);
1126 static const struct snd_kcontrol_new rin_mux =
1127 SOC_DAPM_ENUM("Right Capture Mux", rin_enum);
1129 static const struct soc_enum rin_inv_enum =
1130 SOC_ENUM_SINGLE(WM8904_ANALOGUE_RIGHT_INPUT_1, 4, 3, rin_text);
1132 static const struct snd_kcontrol_new rin_inv_mux =
1133 SOC_DAPM_ENUM("Right Capture Inveting Mux", rin_inv_enum);
1135 static const char *aif_text[] = {
1139 static const struct soc_enum aifoutl_enum =
1140 SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 7, 2, aif_text);
1142 static const struct snd_kcontrol_new aifoutl_mux =
1143 SOC_DAPM_ENUM("AIFOUTL Mux", aifoutl_enum);
1145 static const struct soc_enum aifoutr_enum =
1146 SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 6, 2, aif_text);
1148 static const struct snd_kcontrol_new aifoutr_mux =
1149 SOC_DAPM_ENUM("AIFOUTR Mux", aifoutr_enum);
1151 static const struct soc_enum aifinl_enum =
1152 SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 5, 2, aif_text);
1154 static const struct snd_kcontrol_new aifinl_mux =
1155 SOC_DAPM_ENUM("AIFINL Mux", aifinl_enum);
1157 static const struct soc_enum aifinr_enum =
1158 SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 4, 2, aif_text);
1160 static const struct snd_kcontrol_new aifinr_mux =
1161 SOC_DAPM_ENUM("AIFINR Mux", aifinr_enum);
1163 static const struct snd_soc_dapm_widget wm8904_core_dapm_widgets[] = {
1164 SND_SOC_DAPM_SUPPLY("SYSCLK", WM8904_CLOCK_RATES_2, 2, 0, sysclk_event,
1165 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
1166 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8904_CLOCK_RATES_2, 1, 0, NULL, 0),
1167 SND_SOC_DAPM_SUPPLY("TOCLK", WM8904_CLOCK_RATES_2, 0, 0, NULL, 0),
1170 static const struct snd_soc_dapm_widget wm8904_adc_dapm_widgets[] = {
1171 SND_SOC_DAPM_INPUT("IN1L"),
1172 SND_SOC_DAPM_INPUT("IN1R"),
1173 SND_SOC_DAPM_INPUT("IN2L"),
1174 SND_SOC_DAPM_INPUT("IN2R"),
1175 SND_SOC_DAPM_INPUT("IN3L"),
1176 SND_SOC_DAPM_INPUT("IN3R"),
1178 SND_SOC_DAPM_MICBIAS("MICBIAS", WM8904_MIC_BIAS_CONTROL_0, 0, 0),
1180 SND_SOC_DAPM_MUX("Left Capture Mux", SND_SOC_NOPM, 0, 0, &lin_mux),
1181 SND_SOC_DAPM_MUX("Left Capture Inverting Mux", SND_SOC_NOPM, 0, 0,
1183 SND_SOC_DAPM_MUX("Right Capture Mux", SND_SOC_NOPM, 0, 0, &rin_mux),
1184 SND_SOC_DAPM_MUX("Right Capture Inverting Mux", SND_SOC_NOPM, 0, 0,
1187 SND_SOC_DAPM_PGA("Left Capture PGA", WM8904_POWER_MANAGEMENT_0, 1, 0,
1189 SND_SOC_DAPM_PGA("Right Capture PGA", WM8904_POWER_MANAGEMENT_0, 0, 0,
1192 SND_SOC_DAPM_ADC("ADCL", NULL, WM8904_POWER_MANAGEMENT_6, 1, 0),
1193 SND_SOC_DAPM_ADC("ADCR", NULL, WM8904_POWER_MANAGEMENT_6, 0, 0),
1195 SND_SOC_DAPM_MUX("AIFOUTL Mux", SND_SOC_NOPM, 0, 0, &aifoutl_mux),
1196 SND_SOC_DAPM_MUX("AIFOUTR Mux", SND_SOC_NOPM, 0, 0, &aifoutr_mux),
1198 SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
1199 SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
1202 static const struct snd_soc_dapm_widget wm8904_dac_dapm_widgets[] = {
1203 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
1204 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
1206 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &aifinl_mux),
1207 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &aifinr_mux),
1209 SND_SOC_DAPM_DAC("DACL", NULL, WM8904_POWER_MANAGEMENT_6, 3, 0),
1210 SND_SOC_DAPM_DAC("DACR", NULL, WM8904_POWER_MANAGEMENT_6, 2, 0),
1212 SND_SOC_DAPM_SUPPLY("Charge pump", WM8904_CHARGE_PUMP_0, 0, 0, cp_event,
1213 SND_SOC_DAPM_POST_PMU),
1215 SND_SOC_DAPM_PGA("HPL PGA", WM8904_POWER_MANAGEMENT_2, 1, 0, NULL, 0),
1216 SND_SOC_DAPM_PGA("HPR PGA", WM8904_POWER_MANAGEMENT_2, 0, 0, NULL, 0),
1218 SND_SOC_DAPM_PGA("LINEL PGA", WM8904_POWER_MANAGEMENT_3, 1, 0, NULL, 0),
1219 SND_SOC_DAPM_PGA("LINER PGA", WM8904_POWER_MANAGEMENT_3, 0, 0, NULL, 0),
1221 SND_SOC_DAPM_PGA_E("Headphone Output", SND_SOC_NOPM, WM8904_ANALOGUE_HP_0,
1222 0, NULL, 0, out_pga_event,
1223 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
1224 SND_SOC_DAPM_PGA_E("Line Output", SND_SOC_NOPM, WM8904_ANALOGUE_LINEOUT_0,
1225 0, NULL, 0, out_pga_event,
1226 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
1228 SND_SOC_DAPM_OUTPUT("HPOUTL"),
1229 SND_SOC_DAPM_OUTPUT("HPOUTR"),
1230 SND_SOC_DAPM_OUTPUT("LINEOUTL"),
1231 SND_SOC_DAPM_OUTPUT("LINEOUTR"),
1234 static const char *out_mux_text[] = {
1238 static const struct soc_enum hpl_enum =
1239 SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 3, 2, out_mux_text);
1241 static const struct snd_kcontrol_new hpl_mux =
1242 SOC_DAPM_ENUM("HPL Mux", hpl_enum);
1244 static const struct soc_enum hpr_enum =
1245 SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 2, 2, out_mux_text);
1247 static const struct snd_kcontrol_new hpr_mux =
1248 SOC_DAPM_ENUM("HPR Mux", hpr_enum);
1250 static const struct soc_enum linel_enum =
1251 SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 1, 2, out_mux_text);
1253 static const struct snd_kcontrol_new linel_mux =
1254 SOC_DAPM_ENUM("LINEL Mux", linel_enum);
1256 static const struct soc_enum liner_enum =
1257 SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 0, 2, out_mux_text);
1259 static const struct snd_kcontrol_new liner_mux =
1260 SOC_DAPM_ENUM("LINEL Mux", liner_enum);
1262 static const char *sidetone_text[] = {
1263 "None", "Left", "Right"
1266 static const struct soc_enum dacl_sidetone_enum =
1267 SOC_ENUM_SINGLE(WM8904_DAC_DIGITAL_0, 2, 3, sidetone_text);
1269 static const struct snd_kcontrol_new dacl_sidetone_mux =
1270 SOC_DAPM_ENUM("Left Sidetone Mux", dacl_sidetone_enum);
1272 static const struct soc_enum dacr_sidetone_enum =
1273 SOC_ENUM_SINGLE(WM8904_DAC_DIGITAL_0, 0, 3, sidetone_text);
1275 static const struct snd_kcontrol_new dacr_sidetone_mux =
1276 SOC_DAPM_ENUM("Right Sidetone Mux", dacr_sidetone_enum);
1278 static const struct snd_soc_dapm_widget wm8904_dapm_widgets[] = {
1279 SND_SOC_DAPM_SUPPLY("Class G", WM8904_CLASS_W_0, 0, 1, NULL, 0),
1280 SND_SOC_DAPM_PGA("Left Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
1281 SND_SOC_DAPM_PGA("Right Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
1283 SND_SOC_DAPM_MUX("Left Sidetone", SND_SOC_NOPM, 0, 0, &dacl_sidetone_mux),
1284 SND_SOC_DAPM_MUX("Right Sidetone", SND_SOC_NOPM, 0, 0, &dacr_sidetone_mux),
1286 SND_SOC_DAPM_MUX("HPL Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
1287 SND_SOC_DAPM_MUX("HPR Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
1288 SND_SOC_DAPM_MUX("LINEL Mux", SND_SOC_NOPM, 0, 0, &linel_mux),
1289 SND_SOC_DAPM_MUX("LINER Mux", SND_SOC_NOPM, 0, 0, &liner_mux),
1292 static const struct snd_soc_dapm_route core_intercon[] = {
1293 { "CLK_DSP", NULL, "SYSCLK" },
1294 { "TOCLK", NULL, "SYSCLK" },
1297 static const struct snd_soc_dapm_route adc_intercon[] = {
1298 { "Left Capture Mux", "IN1L", "IN1L" },
1299 { "Left Capture Mux", "IN2L", "IN2L" },
1300 { "Left Capture Mux", "IN3L", "IN3L" },
1302 { "Left Capture Inverting Mux", "IN1L", "IN1L" },
1303 { "Left Capture Inverting Mux", "IN2L", "IN2L" },
1304 { "Left Capture Inverting Mux", "IN3L", "IN3L" },
1306 { "Right Capture Mux", "IN1R", "IN1R" },
1307 { "Right Capture Mux", "IN2R", "IN2R" },
1308 { "Right Capture Mux", "IN3R", "IN3R" },
1310 { "Right Capture Inverting Mux", "IN1R", "IN1R" },
1311 { "Right Capture Inverting Mux", "IN2R", "IN2R" },
1312 { "Right Capture Inverting Mux", "IN3R", "IN3R" },
1314 { "Left Capture PGA", NULL, "Left Capture Mux" },
1315 { "Left Capture PGA", NULL, "Left Capture Inverting Mux" },
1317 { "Right Capture PGA", NULL, "Right Capture Mux" },
1318 { "Right Capture PGA", NULL, "Right Capture Inverting Mux" },
1320 { "AIFOUTL", "Left", "ADCL" },
1321 { "AIFOUTL", "Right", "ADCR" },
1322 { "AIFOUTR", "Left", "ADCL" },
1323 { "AIFOUTR", "Right", "ADCR" },
1325 { "ADCL", NULL, "CLK_DSP" },
1326 { "ADCL", NULL, "Left Capture PGA" },
1328 { "ADCR", NULL, "CLK_DSP" },
1329 { "ADCR", NULL, "Right Capture PGA" },
1332 static const struct snd_soc_dapm_route dac_intercon[] = {
1333 { "DACL", "Right", "AIFINR" },
1334 { "DACL", "Left", "AIFINL" },
1335 { "DACL", NULL, "CLK_DSP" },
1337 { "DACR", "Right", "AIFINR" },
1338 { "DACR", "Left", "AIFINL" },
1339 { "DACR", NULL, "CLK_DSP" },
1341 { "Charge pump", NULL, "SYSCLK" },
1343 { "Headphone Output", NULL, "HPL PGA" },
1344 { "Headphone Output", NULL, "HPR PGA" },
1345 { "Headphone Output", NULL, "Charge pump" },
1346 { "Headphone Output", NULL, "TOCLK" },
1348 { "Line Output", NULL, "LINEL PGA" },
1349 { "Line Output", NULL, "LINER PGA" },
1350 { "Line Output", NULL, "Charge pump" },
1351 { "Line Output", NULL, "TOCLK" },
1353 { "HPOUTL", NULL, "Headphone Output" },
1354 { "HPOUTR", NULL, "Headphone Output" },
1356 { "LINEOUTL", NULL, "Line Output" },
1357 { "LINEOUTR", NULL, "Line Output" },
1360 static const struct snd_soc_dapm_route wm8904_intercon[] = {
1361 { "Left Sidetone", "Left", "ADCL" },
1362 { "Left Sidetone", "Right", "ADCR" },
1363 { "DACL", NULL, "Left Sidetone" },
1365 { "Right Sidetone", "Left", "ADCL" },
1366 { "Right Sidetone", "Right", "ADCR" },
1367 { "DACR", NULL, "Right Sidetone" },
1369 { "Left Bypass", NULL, "Class G" },
1370 { "Left Bypass", NULL, "Left Capture PGA" },
1372 { "Right Bypass", NULL, "Class G" },
1373 { "Right Bypass", NULL, "Right Capture PGA" },
1375 { "HPL Mux", "DAC", "DACL" },
1376 { "HPL Mux", "Bypass", "Left Bypass" },
1378 { "HPR Mux", "DAC", "DACR" },
1379 { "HPR Mux", "Bypass", "Right Bypass" },
1381 { "LINEL Mux", "DAC", "DACL" },
1382 { "LINEL Mux", "Bypass", "Left Bypass" },
1384 { "LINER Mux", "DAC", "DACR" },
1385 { "LINER Mux", "Bypass", "Right Bypass" },
1387 { "HPL PGA", NULL, "HPL Mux" },
1388 { "HPR PGA", NULL, "HPR Mux" },
1390 { "LINEL PGA", NULL, "LINEL Mux" },
1391 { "LINER PGA", NULL, "LINER Mux" },
1394 static int wm8904_add_widgets(struct snd_soc_codec *codec)
1396 snd_soc_add_controls(codec, wm8904_adc_snd_controls,
1397 ARRAY_SIZE(wm8904_adc_snd_controls));
1398 snd_soc_add_controls(codec, wm8904_dac_snd_controls,
1399 ARRAY_SIZE(wm8904_dac_snd_controls));
1400 snd_soc_add_controls(codec, wm8904_snd_controls,
1401 ARRAY_SIZE(wm8904_snd_controls));
1403 snd_soc_dapm_new_controls(codec, wm8904_core_dapm_widgets,
1404 ARRAY_SIZE(wm8904_core_dapm_widgets));
1405 snd_soc_dapm_new_controls(codec, wm8904_adc_dapm_widgets,
1406 ARRAY_SIZE(wm8904_adc_dapm_widgets));
1407 snd_soc_dapm_new_controls(codec, wm8904_dac_dapm_widgets,
1408 ARRAY_SIZE(wm8904_dac_dapm_widgets));
1409 snd_soc_dapm_new_controls(codec, wm8904_dapm_widgets,
1410 ARRAY_SIZE(wm8904_dapm_widgets));
1412 snd_soc_dapm_add_routes(codec, core_intercon,
1413 ARRAY_SIZE(core_intercon));
1414 snd_soc_dapm_add_routes(codec, adc_intercon, ARRAY_SIZE(adc_intercon));
1415 snd_soc_dapm_add_routes(codec, dac_intercon, ARRAY_SIZE(dac_intercon));
1416 snd_soc_dapm_add_routes(codec, wm8904_intercon,
1417 ARRAY_SIZE(wm8904_intercon));
1419 snd_soc_dapm_new_widgets(codec);
1425 unsigned int clk_sys_rate;
1426 } clk_sys_rates[] = {
1442 } sample_rates[] = {
1455 int div; /* *10 due to .5s */
1481 static int wm8904_hw_params(struct snd_pcm_substream *substream,
1482 struct snd_pcm_hw_params *params,
1483 struct snd_soc_dai *dai)
1485 struct snd_soc_codec *codec = dai->codec;
1486 struct wm8904_priv *wm8904 = codec->private_data;
1487 int ret, i, best, best_val, cur_val;
1488 unsigned int aif1 = 0;
1489 unsigned int aif2 = 0;
1490 unsigned int aif3 = 0;
1491 unsigned int clock1 = 0;
1492 unsigned int dac_digital1 = 0;
1494 /* What BCLK do we need? */
1495 wm8904->fs = params_rate(params);
1496 if (wm8904->tdm_slots) {
1497 dev_dbg(codec->dev, "Configuring for %d %d bit TDM slots\n",
1498 wm8904->tdm_slots, wm8904->tdm_width);
1499 wm8904->bclk = snd_soc_calc_bclk(wm8904->fs,
1500 wm8904->tdm_width, 2,
1503 wm8904->bclk = snd_soc_params_to_bclk(params);
1506 switch (params_format(params)) {
1507 case SNDRV_PCM_FORMAT_S16_LE:
1509 case SNDRV_PCM_FORMAT_S20_3LE:
1512 case SNDRV_PCM_FORMAT_S24_LE:
1515 case SNDRV_PCM_FORMAT_S32_LE:
1523 dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8904->bclk);
1525 ret = wm8904_configure_clocking(codec);
1529 /* Select nearest CLK_SYS_RATE */
1531 best_val = abs((wm8904->sysclk_rate / clk_sys_rates[0].ratio)
1533 for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1534 cur_val = abs((wm8904->sysclk_rate /
1535 clk_sys_rates[i].ratio) - wm8904->fs);;
1536 if (cur_val < best_val) {
1541 dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
1542 clk_sys_rates[best].ratio);
1543 clock1 |= (clk_sys_rates[best].clk_sys_rate
1544 << WM8904_CLK_SYS_RATE_SHIFT);
1548 best_val = abs(wm8904->fs - sample_rates[0].rate);
1549 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1551 cur_val = abs(wm8904->fs - sample_rates[i].rate);
1552 if (cur_val < best_val) {
1557 dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
1558 sample_rates[best].rate);
1559 clock1 |= (sample_rates[best].sample_rate
1560 << WM8904_SAMPLE_RATE_SHIFT);
1562 /* Enable sloping stopband filter for low sample rates */
1563 if (wm8904->fs <= 24000)
1564 dac_digital1 |= WM8904_DAC_SB_FILT;
1569 for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1570 cur_val = ((wm8904->sysclk_rate * 10) / bclk_divs[i].div)
1572 if (cur_val < 0) /* Table is sorted */
1574 if (cur_val < best_val) {
1579 wm8904->bclk = (wm8904->sysclk_rate * 10) / bclk_divs[best].div;
1580 dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1581 bclk_divs[best].div, wm8904->bclk);
1582 aif2 |= bclk_divs[best].bclk_div;
1584 /* LRCLK is a simple fraction of BCLK */
1585 dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm8904->bclk / wm8904->fs);
1586 aif3 |= wm8904->bclk / wm8904->fs;
1588 /* Apply the settings */
1589 snd_soc_update_bits(codec, WM8904_DAC_DIGITAL_1,
1590 WM8904_DAC_SB_FILT, dac_digital1);
1591 snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_1,
1592 WM8904_AIF_WL_MASK, aif1);
1593 snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_2,
1594 WM8904_BCLK_DIV_MASK, aif2);
1595 snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_3,
1596 WM8904_LRCLK_RATE_MASK, aif3);
1597 snd_soc_update_bits(codec, WM8904_CLOCK_RATES_1,
1598 WM8904_SAMPLE_RATE_MASK |
1599 WM8904_CLK_SYS_RATE_MASK, clock1);
1601 /* Update filters for the new settings */
1602 wm8904_set_retune_mobile(codec);
1603 wm8904_set_deemph(codec);
1609 static int wm8904_set_sysclk(struct snd_soc_dai *dai, int clk_id,
1610 unsigned int freq, int dir)
1612 struct snd_soc_codec *codec = dai->codec;
1613 struct wm8904_priv *priv = codec->private_data;
1616 case WM8904_CLK_MCLK:
1617 priv->sysclk_src = clk_id;
1618 priv->mclk_rate = freq;
1621 case WM8904_CLK_FLL:
1622 priv->sysclk_src = clk_id;
1629 dev_dbg(dai->dev, "Clock source is %d at %uHz\n", clk_id, freq);
1631 wm8904_configure_clocking(codec);
1636 static int wm8904_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
1638 struct snd_soc_codec *codec = dai->codec;
1639 unsigned int aif1 = 0;
1640 unsigned int aif3 = 0;
1642 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1643 case SND_SOC_DAIFMT_CBS_CFS:
1645 case SND_SOC_DAIFMT_CBS_CFM:
1646 aif3 |= WM8904_LRCLK_DIR;
1648 case SND_SOC_DAIFMT_CBM_CFS:
1649 aif1 |= WM8904_BCLK_DIR;
1651 case SND_SOC_DAIFMT_CBM_CFM:
1652 aif1 |= WM8904_BCLK_DIR;
1653 aif3 |= WM8904_LRCLK_DIR;
1659 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1660 case SND_SOC_DAIFMT_DSP_B:
1661 aif1 |= WM8904_AIF_LRCLK_INV;
1662 case SND_SOC_DAIFMT_DSP_A:
1665 case SND_SOC_DAIFMT_I2S:
1668 case SND_SOC_DAIFMT_RIGHT_J:
1670 case SND_SOC_DAIFMT_LEFT_J:
1677 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1678 case SND_SOC_DAIFMT_DSP_A:
1679 case SND_SOC_DAIFMT_DSP_B:
1680 /* frame inversion not valid for DSP modes */
1681 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1682 case SND_SOC_DAIFMT_NB_NF:
1684 case SND_SOC_DAIFMT_IB_NF:
1685 aif1 |= WM8904_AIF_BCLK_INV;
1692 case SND_SOC_DAIFMT_I2S:
1693 case SND_SOC_DAIFMT_RIGHT_J:
1694 case SND_SOC_DAIFMT_LEFT_J:
1695 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1696 case SND_SOC_DAIFMT_NB_NF:
1698 case SND_SOC_DAIFMT_IB_IF:
1699 aif1 |= WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV;
1701 case SND_SOC_DAIFMT_IB_NF:
1702 aif1 |= WM8904_AIF_BCLK_INV;
1704 case SND_SOC_DAIFMT_NB_IF:
1705 aif1 |= WM8904_AIF_LRCLK_INV;
1715 snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_1,
1716 WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV |
1717 WM8904_AIF_FMT_MASK | WM8904_BCLK_DIR, aif1);
1718 snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_3,
1719 WM8904_LRCLK_DIR, aif3);
1725 static int wm8904_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
1726 unsigned int rx_mask, int slots, int slot_width)
1728 struct snd_soc_codec *codec = dai->codec;
1729 struct wm8904_priv *wm8904 = codec->private_data;
1732 /* Don't need to validate anything if we're turning off TDM */
1736 /* Note that we allow configurations we can't handle ourselves -
1737 * for example, we can generate clocks for slots 2 and up even if
1738 * we can't use those slots ourselves.
1740 aif1 |= WM8904_AIFADC_TDM | WM8904_AIFDAC_TDM;
1746 aif1 |= WM8904_AIFADC_TDM_CHAN;
1757 aif1 |= WM8904_AIFDAC_TDM_CHAN;
1764 wm8904->tdm_width = slot_width;
1765 wm8904->tdm_slots = slots / 2;
1767 snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_1,
1768 WM8904_AIFADC_TDM | WM8904_AIFADC_TDM_CHAN |
1769 WM8904_AIFDAC_TDM | WM8904_AIFDAC_TDM_CHAN, aif1);
1777 u16 fll_clk_ref_div;
1782 /* The size in bits of the FLL divide multiplied by 10
1783 * to allow rounding later */
1784 #define FIXED_FLL_SIZE ((1 << 16) * 10)
1792 { 0, 64000, 4, 16 },
1793 { 64000, 128000, 3, 8 },
1794 { 128000, 256000, 2, 4 },
1795 { 256000, 1000000, 1, 2 },
1796 { 1000000, 13500000, 0, 1 },
1799 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
1803 unsigned int K, Ndiv, Nmod, target;
1807 /* Fref must be <=13.5MHz */
1809 fll_div->fll_clk_ref_div = 0;
1810 while ((Fref / div) > 13500000) {
1812 fll_div->fll_clk_ref_div++;
1815 pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
1821 pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
1823 /* Apply the division for our remaining calculations */
1826 /* Fvco should be 90-100MHz; don't check the upper bound */
1828 while (Fout * div < 90000000) {
1831 pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
1836 target = Fout * div;
1837 fll_div->fll_outdiv = div - 1;
1839 pr_debug("Fvco=%dHz\n", target);
1841 /* Find an appropraite FLL_FRATIO and factor it out of the target */
1842 for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
1843 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
1844 fll_div->fll_fratio = fll_fratios[i].fll_fratio;
1845 target /= fll_fratios[i].ratio;
1849 if (i == ARRAY_SIZE(fll_fratios)) {
1850 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
1854 /* Now, calculate N.K */
1855 Ndiv = target / Fref;
1858 Nmod = target % Fref;
1859 pr_debug("Nmod=%d\n", Nmod);
1861 /* Calculate fractional part - scale up so we can round. */
1862 Kpart = FIXED_FLL_SIZE * (long long)Nmod;
1864 do_div(Kpart, Fref);
1866 K = Kpart & 0xFFFFFFFF;
1871 /* Move down to proper range now rounding is done */
1872 fll_div->k = K / 10;
1874 pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
1875 fll_div->n, fll_div->k,
1876 fll_div->fll_fratio, fll_div->fll_outdiv,
1877 fll_div->fll_clk_ref_div);
1882 static int wm8904_set_fll(struct snd_soc_dai *dai, int fll_id, int source,
1883 unsigned int Fref, unsigned int Fout)
1885 struct snd_soc_codec *codec = dai->codec;
1886 struct wm8904_priv *wm8904 = codec->private_data;
1887 struct _fll_div fll_div;
1892 if (source == wm8904->fll_src && Fref == wm8904->fll_fref &&
1893 Fout == wm8904->fll_fout)
1896 clock2 = snd_soc_read(codec, WM8904_CLOCK_RATES_2);
1899 dev_dbg(codec->dev, "FLL disabled\n");
1901 wm8904->fll_fref = 0;
1902 wm8904->fll_fout = 0;
1904 /* Gate SYSCLK to avoid glitches */
1905 snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
1906 WM8904_CLK_SYS_ENA, 0);
1908 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
1909 WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
1914 /* Validate the FLL ID */
1916 case WM8904_FLL_MCLK:
1917 case WM8904_FLL_LRCLK:
1918 case WM8904_FLL_BCLK:
1919 ret = fll_factors(&fll_div, Fref, Fout);
1924 case WM8904_FLL_FREE_RUNNING:
1925 dev_dbg(codec->dev, "Using free running FLL\n");
1926 /* Force 12MHz and output/4 for now */
1930 memset(&fll_div, 0, sizeof(fll_div));
1931 fll_div.fll_outdiv = 3;
1935 dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
1939 /* Save current state then disable the FLL and SYSCLK to avoid
1941 fll1 = snd_soc_read(codec, WM8904_FLL_CONTROL_1);
1942 snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
1943 WM8904_CLK_SYS_ENA, 0);
1944 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
1945 WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
1947 /* Unlock forced oscilator control to switch it on/off */
1948 snd_soc_update_bits(codec, WM8904_CONTROL_INTERFACE_TEST_1,
1949 WM8904_USER_KEY, WM8904_USER_KEY);
1951 if (fll_id == WM8904_FLL_FREE_RUNNING) {
1952 val = WM8904_FLL_FRC_NCO;
1957 snd_soc_update_bits(codec, WM8904_FLL_NCO_TEST_1, WM8904_FLL_FRC_NCO,
1959 snd_soc_update_bits(codec, WM8904_CONTROL_INTERFACE_TEST_1,
1960 WM8904_USER_KEY, 0);
1963 case WM8904_FLL_MCLK:
1964 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
1965 WM8904_FLL_CLK_REF_SRC_MASK, 0);
1968 case WM8904_FLL_LRCLK:
1969 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
1970 WM8904_FLL_CLK_REF_SRC_MASK, 1);
1973 case WM8904_FLL_BCLK:
1974 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
1975 WM8904_FLL_CLK_REF_SRC_MASK, 2);
1980 val = WM8904_FLL_FRACN_ENA;
1983 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
1984 WM8904_FLL_FRACN_ENA, val);
1986 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_2,
1987 WM8904_FLL_OUTDIV_MASK | WM8904_FLL_FRATIO_MASK,
1988 (fll_div.fll_outdiv << WM8904_FLL_OUTDIV_SHIFT) |
1989 (fll_div.fll_fratio << WM8904_FLL_FRATIO_SHIFT));
1991 snd_soc_write(codec, WM8904_FLL_CONTROL_3, fll_div.k);
1993 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_4, WM8904_FLL_N_MASK,
1994 fll_div.n << WM8904_FLL_N_SHIFT);
1996 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
1997 WM8904_FLL_CLK_REF_DIV_MASK,
1998 fll_div.fll_clk_ref_div
1999 << WM8904_FLL_CLK_REF_DIV_SHIFT);
2001 dev_dbg(codec->dev, "FLL configured for %dHz->%dHz\n", Fref, Fout);
2003 wm8904->fll_fref = Fref;
2004 wm8904->fll_fout = Fout;
2005 wm8904->fll_src = source;
2007 /* Enable the FLL if it was previously active */
2008 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
2009 WM8904_FLL_OSC_ENA, fll1);
2010 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
2011 WM8904_FLL_ENA, fll1);
2014 /* Reenable SYSCLK if it was previously active */
2015 snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
2016 WM8904_CLK_SYS_ENA, clock2);
2021 static int wm8904_digital_mute(struct snd_soc_dai *codec_dai, int mute)
2023 struct snd_soc_codec *codec = codec_dai->codec;
2027 val = WM8904_DAC_MUTE;
2031 snd_soc_update_bits(codec, WM8904_DAC_DIGITAL_1, WM8904_DAC_MUTE, val);
2036 static void wm8904_sync_cache(struct snd_soc_codec *codec)
2038 struct wm8904_priv *wm8904 = codec->private_data;
2041 if (!codec->cache_sync)
2044 codec->cache_only = 0;
2046 /* Sync back cached values if they're different from the
2049 for (i = 1; i < ARRAY_SIZE(wm8904->reg_cache); i++) {
2050 if (!wm8904_access[i].writable)
2053 if (wm8904->reg_cache[i] == wm8904_reg[i])
2056 snd_soc_write(codec, i, wm8904->reg_cache[i]);
2059 codec->cache_sync = 0;
2062 static int wm8904_set_bias_level(struct snd_soc_codec *codec,
2063 enum snd_soc_bias_level level)
2065 struct wm8904_priv *wm8904 = codec->private_data;
2069 case SND_SOC_BIAS_ON:
2072 case SND_SOC_BIAS_PREPARE:
2073 /* VMID resistance 2*50k */
2074 snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
2075 WM8904_VMID_RES_MASK,
2076 0x1 << WM8904_VMID_RES_SHIFT);
2078 /* Normal bias current */
2079 snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
2080 WM8904_ISEL_MASK, 2 << WM8904_ISEL_SHIFT);
2083 case SND_SOC_BIAS_STANDBY:
2084 if (codec->bias_level == SND_SOC_BIAS_OFF) {
2085 ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
2089 "Failed to enable supplies: %d\n",
2094 wm8904_sync_cache(codec);
2097 snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
2098 WM8904_BIAS_ENA, WM8904_BIAS_ENA);
2100 /* Enable VMID, VMID buffering, 2*5k resistance */
2101 snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
2103 WM8904_VMID_RES_MASK,
2105 0x3 << WM8904_VMID_RES_SHIFT);
2111 /* Maintain VMID with 2*250k */
2112 snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
2113 WM8904_VMID_RES_MASK,
2114 0x2 << WM8904_VMID_RES_SHIFT);
2116 /* Bias current *0.5 */
2117 snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
2118 WM8904_ISEL_MASK, 0);
2121 case SND_SOC_BIAS_OFF:
2123 snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
2124 WM8904_VMID_RES_MASK | WM8904_VMID_ENA, 0);
2126 /* Stop bias generation */
2127 snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
2128 WM8904_BIAS_ENA, 0);
2130 #ifdef CONFIG_REGULATOR
2131 /* Post 2.6.34 we will be able to get a callback when
2132 * the regulators are disabled which we can use but
2133 * for now just assume that the power will be cut if
2134 * the regulator API is in use.
2136 codec->cache_sync = 1;
2139 regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies),
2143 codec->bias_level = level;
2147 #define WM8904_RATES SNDRV_PCM_RATE_8000_96000
2149 #define WM8904_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
2150 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
2152 static struct snd_soc_dai_ops wm8904_dai_ops = {
2153 .set_sysclk = wm8904_set_sysclk,
2154 .set_fmt = wm8904_set_fmt,
2155 .set_tdm_slot = wm8904_set_tdm_slot,
2156 .set_pll = wm8904_set_fll,
2157 .hw_params = wm8904_hw_params,
2158 .digital_mute = wm8904_digital_mute,
2161 struct snd_soc_dai wm8904_dai = {
2164 .stream_name = "Playback",
2167 .rates = WM8904_RATES,
2168 .formats = WM8904_FORMATS,
2171 .stream_name = "Capture",
2174 .rates = WM8904_RATES,
2175 .formats = WM8904_FORMATS,
2177 .ops = &wm8904_dai_ops,
2178 .symmetric_rates = 1,
2180 EXPORT_SYMBOL_GPL(wm8904_dai);
2183 static int wm8904_suspend(struct platform_device *pdev, pm_message_t state)
2185 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
2186 struct snd_soc_codec *codec = socdev->card->codec;
2188 wm8904_set_bias_level(codec, SND_SOC_BIAS_OFF);
2193 static int wm8904_resume(struct platform_device *pdev)
2195 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
2196 struct snd_soc_codec *codec = socdev->card->codec;
2198 wm8904_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
2203 #define wm8904_suspend NULL
2204 #define wm8904_resume NULL
2207 static void wm8904_handle_retune_mobile_pdata(struct wm8904_priv *wm8904)
2209 struct snd_soc_codec *codec = &wm8904->codec;
2210 struct wm8904_pdata *pdata = wm8904->pdata;
2211 struct snd_kcontrol_new control =
2212 SOC_ENUM_EXT("EQ Mode",
2213 wm8904->retune_mobile_enum,
2214 wm8904_get_retune_mobile_enum,
2215 wm8904_put_retune_mobile_enum);
2219 /* We need an array of texts for the enum API but the number
2220 * of texts is likely to be less than the number of
2221 * configurations due to the sample rate dependency of the
2222 * configurations. */
2223 wm8904->num_retune_mobile_texts = 0;
2224 wm8904->retune_mobile_texts = NULL;
2225 for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) {
2226 for (j = 0; j < wm8904->num_retune_mobile_texts; j++) {
2227 if (strcmp(pdata->retune_mobile_cfgs[i].name,
2228 wm8904->retune_mobile_texts[j]) == 0)
2232 if (j != wm8904->num_retune_mobile_texts)
2235 /* Expand the array... */
2236 t = krealloc(wm8904->retune_mobile_texts,
2238 (wm8904->num_retune_mobile_texts + 1),
2243 /* ...store the new entry... */
2244 t[wm8904->num_retune_mobile_texts] =
2245 pdata->retune_mobile_cfgs[i].name;
2247 /* ...and remember the new version. */
2248 wm8904->num_retune_mobile_texts++;
2249 wm8904->retune_mobile_texts = t;
2252 dev_dbg(codec->dev, "Allocated %d unique ReTune Mobile names\n",
2253 wm8904->num_retune_mobile_texts);
2255 wm8904->retune_mobile_enum.max = wm8904->num_retune_mobile_texts;
2256 wm8904->retune_mobile_enum.texts = wm8904->retune_mobile_texts;
2258 ret = snd_soc_add_controls(&wm8904->codec, &control, 1);
2260 dev_err(wm8904->codec.dev,
2261 "Failed to add ReTune Mobile control: %d\n", ret);
2264 static void wm8904_handle_pdata(struct wm8904_priv *wm8904)
2266 struct snd_soc_codec *codec = &wm8904->codec;
2267 struct wm8904_pdata *pdata = wm8904->pdata;
2271 snd_soc_add_controls(&wm8904->codec, wm8904_eq_controls,
2272 ARRAY_SIZE(wm8904_eq_controls));
2276 dev_dbg(codec->dev, "%d DRC configurations\n", pdata->num_drc_cfgs);
2278 if (pdata->num_drc_cfgs) {
2279 struct snd_kcontrol_new control =
2280 SOC_ENUM_EXT("DRC Mode", wm8904->drc_enum,
2281 wm8904_get_drc_enum, wm8904_put_drc_enum);
2283 /* We need an array of texts for the enum API */
2284 wm8904->drc_texts = kmalloc(sizeof(char *)
2285 * pdata->num_drc_cfgs, GFP_KERNEL);
2286 if (!wm8904->drc_texts) {
2287 dev_err(wm8904->codec.dev,
2288 "Failed to allocate %d DRC config texts\n",
2289 pdata->num_drc_cfgs);
2293 for (i = 0; i < pdata->num_drc_cfgs; i++)
2294 wm8904->drc_texts[i] = pdata->drc_cfgs[i].name;
2296 wm8904->drc_enum.max = pdata->num_drc_cfgs;
2297 wm8904->drc_enum.texts = wm8904->drc_texts;
2299 ret = snd_soc_add_controls(&wm8904->codec, &control, 1);
2301 dev_err(wm8904->codec.dev,
2302 "Failed to add DRC mode control: %d\n", ret);
2304 wm8904_set_drc(codec);
2307 dev_dbg(codec->dev, "%d ReTune Mobile configurations\n",
2308 pdata->num_retune_mobile_cfgs);
2310 if (pdata->num_retune_mobile_cfgs)
2311 wm8904_handle_retune_mobile_pdata(wm8904);
2313 snd_soc_add_controls(&wm8904->codec, wm8904_eq_controls,
2314 ARRAY_SIZE(wm8904_eq_controls));
2317 static int wm8904_probe(struct platform_device *pdev)
2319 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
2320 struct snd_soc_codec *codec;
2323 if (wm8904_codec == NULL) {
2324 dev_err(&pdev->dev, "Codec device not registered\n");
2328 socdev->card->codec = wm8904_codec;
2329 codec = wm8904_codec;
2332 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
2334 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
2338 wm8904_handle_pdata(codec->private_data);
2340 wm8904_add_widgets(codec);
2348 static int wm8904_remove(struct platform_device *pdev)
2350 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
2352 snd_soc_free_pcms(socdev);
2353 snd_soc_dapm_free(socdev);
2358 struct snd_soc_codec_device soc_codec_dev_wm8904 = {
2359 .probe = wm8904_probe,
2360 .remove = wm8904_remove,
2361 .suspend = wm8904_suspend,
2362 .resume = wm8904_resume,
2364 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8904);
2366 static int wm8904_register(struct wm8904_priv *wm8904,
2367 enum snd_soc_control_type control)
2370 struct snd_soc_codec *codec = &wm8904->codec;
2374 dev_err(codec->dev, "Another WM8904 is registered\n");
2378 mutex_init(&codec->mutex);
2379 INIT_LIST_HEAD(&codec->dapm_widgets);
2380 INIT_LIST_HEAD(&codec->dapm_paths);
2382 codec->private_data = wm8904;
2383 codec->name = "WM8904";
2384 codec->owner = THIS_MODULE;
2385 codec->bias_level = SND_SOC_BIAS_OFF;
2386 codec->set_bias_level = wm8904_set_bias_level;
2387 codec->dai = &wm8904_dai;
2389 codec->reg_cache_size = WM8904_MAX_REGISTER;
2390 codec->reg_cache = &wm8904->reg_cache;
2391 codec->volatile_register = wm8904_volatile_register;
2392 codec->cache_sync = 1;
2393 codec->idle_bias_off = 1;
2395 memcpy(codec->reg_cache, wm8904_reg, sizeof(wm8904_reg));
2397 ret = snd_soc_codec_set_cache_io(codec, 8, 16, control);
2399 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
2403 for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++)
2404 wm8904->supplies[i].supply = wm8904_supply_names[i];
2406 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8904->supplies),
2409 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
2413 ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
2416 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
2420 ret = snd_soc_read(codec, WM8904_SW_RESET_AND_ID);
2422 dev_err(codec->dev, "Failed to read ID register\n");
2425 if (ret != wm8904_reg[WM8904_SW_RESET_AND_ID]) {
2426 dev_err(codec->dev, "Device is not a WM8904, ID is %x\n", ret);
2431 ret = snd_soc_read(codec, WM8904_REVISION);
2433 dev_err(codec->dev, "Failed to read device revision: %d\n",
2437 dev_info(codec->dev, "revision %c\n", ret + 'A');
2439 ret = wm8904_reset(codec);
2441 dev_err(codec->dev, "Failed to issue reset\n");
2445 wm8904_dai.dev = codec->dev;
2447 /* Change some default settings - latch VU and enable ZC */
2448 wm8904->reg_cache[WM8904_ADC_DIGITAL_VOLUME_LEFT] |= WM8904_ADC_VU;
2449 wm8904->reg_cache[WM8904_ADC_DIGITAL_VOLUME_RIGHT] |= WM8904_ADC_VU;
2450 wm8904->reg_cache[WM8904_DAC_DIGITAL_VOLUME_LEFT] |= WM8904_DAC_VU;
2451 wm8904->reg_cache[WM8904_DAC_DIGITAL_VOLUME_RIGHT] |= WM8904_DAC_VU;
2452 wm8904->reg_cache[WM8904_ANALOGUE_OUT1_LEFT] |= WM8904_HPOUT_VU |
2454 wm8904->reg_cache[WM8904_ANALOGUE_OUT1_RIGHT] |= WM8904_HPOUT_VU |
2456 wm8904->reg_cache[WM8904_ANALOGUE_OUT2_LEFT] |= WM8904_LINEOUT_VU |
2458 wm8904->reg_cache[WM8904_ANALOGUE_OUT2_RIGHT] |= WM8904_LINEOUT_VU |
2460 wm8904->reg_cache[WM8904_CLOCK_RATES_0] &= ~WM8904_SR_MODE;
2462 /* Set Class W by default - this will be managed by the Class
2463 * G widget at runtime where bypass paths are available.
2465 wm8904->reg_cache[WM8904_CLASS_W_0] |= WM8904_CP_DYN_PWR;
2467 /* Use normal bias source */
2468 wm8904->reg_cache[WM8904_BIAS_CONTROL_0] &= ~WM8904_POBCTRL;
2470 wm8904_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
2472 /* Bias level configuration will have done an extra enable */
2473 regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
2475 wm8904_codec = codec;
2477 ret = snd_soc_register_codec(codec);
2479 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
2483 ret = snd_soc_register_dai(&wm8904_dai);
2485 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
2486 snd_soc_unregister_codec(codec);
2493 regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
2495 regulator_bulk_free(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
2501 static void wm8904_unregister(struct wm8904_priv *wm8904)
2503 wm8904_set_bias_level(&wm8904->codec, SND_SOC_BIAS_OFF);
2504 regulator_bulk_free(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
2505 snd_soc_unregister_dai(&wm8904_dai);
2506 snd_soc_unregister_codec(&wm8904->codec);
2508 wm8904_codec = NULL;
2511 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
2512 static __devinit int wm8904_i2c_probe(struct i2c_client *i2c,
2513 const struct i2c_device_id *id)
2515 struct wm8904_priv *wm8904;
2516 struct snd_soc_codec *codec;
2518 wm8904 = kzalloc(sizeof(struct wm8904_priv), GFP_KERNEL);
2522 codec = &wm8904->codec;
2523 codec->hw_write = (hw_write_t)i2c_master_send;
2525 i2c_set_clientdata(i2c, wm8904);
2526 codec->control_data = i2c;
2527 wm8904->pdata = i2c->dev.platform_data;
2529 codec->dev = &i2c->dev;
2531 return wm8904_register(wm8904, SND_SOC_I2C);
2534 static __devexit int wm8904_i2c_remove(struct i2c_client *client)
2536 struct wm8904_priv *wm8904 = i2c_get_clientdata(client);
2537 wm8904_unregister(wm8904);
2541 static const struct i2c_device_id wm8904_i2c_id[] = {
2545 MODULE_DEVICE_TABLE(i2c, wm8904_i2c_id);
2547 static struct i2c_driver wm8904_i2c_driver = {
2550 .owner = THIS_MODULE,
2552 .probe = wm8904_i2c_probe,
2553 .remove = __devexit_p(wm8904_i2c_remove),
2554 .id_table = wm8904_i2c_id,
2558 static int __init wm8904_modinit(void)
2561 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
2562 ret = i2c_add_driver(&wm8904_i2c_driver);
2564 printk(KERN_ERR "Failed to register WM8904 I2C driver: %d\n",
2570 module_init(wm8904_modinit);
2572 static void __exit wm8904_exit(void)
2574 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
2575 i2c_del_driver(&wm8904_i2c_driver);
2578 module_exit(wm8904_exit);
2580 MODULE_DESCRIPTION("ASoC WM8904 driver");
2581 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
2582 MODULE_LICENSE("GPL");