?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
netxen: fix mac list management
[linux-2.6/btrfs-unstable.git] / sound / soc / codecs / wm8903.c
blob8cf571f1a803d3ae7b1b1e561aedb01470cc19dd
1 /*
2 * wm8903.c -- WM8903 ALSA SoC Audio driver
3 *
4 * Copyright 2008 Wolfson Microelectronics
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 * TODO:
13 * - TDM mode configuration.
14 * - Mic detect.
15 * - Digital microphone support.
16 * - Interrupt support (mic detect and sequencer).
17 */
18
19 #include <linux/module.h>
20 #include <linux/moduleparam.h>
21 #include <linux/init.h>
22 #include <linux/delay.h>
23 #include <linux/pm.h>
24 #include <linux/i2c.h>
25 #include <linux/platform_device.h>
26 #include <sound/core.h>
27 #include <sound/pcm.h>
28 #include <sound/pcm_params.h>
29 #include <sound/tlv.h>
30 #include <sound/soc.h>
31 #include <sound/soc-dapm.h>
32 #include <sound/initval.h>
33
34 #include "wm8903.h"
35
36 /* Register defaults at reset */
37 static u16 wm8903_reg_defaults[] = {
38 0x8903, /* R0 - SW Reset and ID */
39 0x0000, /* R1 - Revision Number */
40 0x0000, /* R2 */
41 0x0000, /* R3 */
42 0x0018, /* R4 - Bias Control 0 */
43 0x0000, /* R5 - VMID Control 0 */
44 0x0000, /* R6 - Mic Bias Control 0 */
45 0x0000, /* R7 */
46 0x0001, /* R8 - Analogue DAC 0 */
47 0x0000, /* R9 */
48 0x0001, /* R10 - Analogue ADC 0 */
49 0x0000, /* R11 */
50 0x0000, /* R12 - Power Management 0 */
51 0x0000, /* R13 - Power Management 1 */
52 0x0000, /* R14 - Power Management 2 */
53 0x0000, /* R15 - Power Management 3 */
54 0x0000, /* R16 - Power Management 4 */
55 0x0000, /* R17 - Power Management 5 */
56 0x0000, /* R18 - Power Management 6 */
57 0x0000, /* R19 */
58 0x0400, /* R20 - Clock Rates 0 */
59 0x0D07, /* R21 - Clock Rates 1 */
60 0x0000, /* R22 - Clock Rates 2 */
61 0x0000, /* R23 */
62 0x0050, /* R24 - Audio Interface 0 */
63 0x0242, /* R25 - Audio Interface 1 */
64 0x0008, /* R26 - Audio Interface 2 */
65 0x0022, /* R27 - Audio Interface 3 */
66 0x0000, /* R28 */
67 0x0000, /* R29 */
68 0x00C0, /* R30 - DAC Digital Volume Left */
69 0x00C0, /* R31 - DAC Digital Volume Right */
70 0x0000, /* R32 - DAC Digital 0 */
71 0x0000, /* R33 - DAC Digital 1 */
72 0x0000, /* R34 */
73 0x0000, /* R35 */
74 0x00C0, /* R36 - ADC Digital Volume Left */
75 0x00C0, /* R37 - ADC Digital Volume Right */
76 0x0000, /* R38 - ADC Digital 0 */
77 0x0073, /* R39 - Digital Microphone 0 */
78 0x09BF, /* R40 - DRC 0 */
79 0x3241, /* R41 - DRC 1 */
80 0x0020, /* R42 - DRC 2 */
81 0x0000, /* R43 - DRC 3 */
82 0x0085, /* R44 - Analogue Left Input 0 */
83 0x0085, /* R45 - Analogue Right Input 0 */
84 0x0044, /* R46 - Analogue Left Input 1 */
85 0x0044, /* R47 - Analogue Right Input 1 */
86 0x0000, /* R48 */
87 0x0000, /* R49 */
88 0x0008, /* R50 - Analogue Left Mix 0 */
89 0x0004, /* R51 - Analogue Right Mix 0 */
90 0x0000, /* R52 - Analogue Spk Mix Left 0 */
91 0x0000, /* R53 - Analogue Spk Mix Left 1 */
92 0x0000, /* R54 - Analogue Spk Mix Right 0 */
93 0x0000, /* R55 - Analogue Spk Mix Right 1 */
94 0x0000, /* R56 */
95 0x002D, /* R57 - Analogue OUT1 Left */
96 0x002D, /* R58 - Analogue OUT1 Right */
97 0x0039, /* R59 - Analogue OUT2 Left */
98 0x0039, /* R60 - Analogue OUT2 Right */
99 0x0100, /* R61 */
100 0x0139, /* R62 - Analogue OUT3 Left */
101 0x0139, /* R63 - Analogue OUT3 Right */
102 0x0000, /* R64 */
103 0x0000, /* R65 - Analogue SPK Output Control 0 */
104 0x0000, /* R66 */
105 0x0010, /* R67 - DC Servo 0 */
106 0x0100, /* R68 */
107 0x00A4, /* R69 - DC Servo 2 */
108 0x0807, /* R70 */
109 0x0000, /* R71 */
110 0x0000, /* R72 */
111 0x0000, /* R73 */
112 0x0000, /* R74 */
113 0x0000, /* R75 */
114 0x0000, /* R76 */
115 0x0000, /* R77 */
116 0x0000, /* R78 */
117 0x000E, /* R79 */
118 0x0000, /* R80 */
119 0x0000, /* R81 */
120 0x0000, /* R82 */
121 0x0000, /* R83 */
122 0x0000, /* R84 */
123 0x0000, /* R85 */
124 0x0000, /* R86 */
125 0x0006, /* R87 */
126 0x0000, /* R88 */
127 0x0000, /* R89 */
128 0x0000, /* R90 - Analogue HP 0 */
129 0x0060, /* R91 */
130 0x0000, /* R92 */
131 0x0000, /* R93 */
132 0x0000, /* R94 - Analogue Lineout 0 */
133 0x0060, /* R95 */
134 0x0000, /* R96 */
135 0x0000, /* R97 */
136 0x0000, /* R98 - Charge Pump 0 */
137 0x1F25, /* R99 */
138 0x2B19, /* R100 */
139 0x01C0, /* R101 */
140 0x01EF, /* R102 */
141 0x2B00, /* R103 */
142 0x0000, /* R104 - Class W 0 */
143 0x01C0, /* R105 */
144 0x1C10, /* R106 */
145 0x0000, /* R107 */
146 0x0000, /* R108 - Write Sequencer 0 */
147 0x0000, /* R109 - Write Sequencer 1 */
148 0x0000, /* R110 - Write Sequencer 2 */
149 0x0000, /* R111 - Write Sequencer 3 */
150 0x0000, /* R112 - Write Sequencer 4 */
151 0x0000, /* R113 */
152 0x0000, /* R114 - Control Interface */
153 0x0000, /* R115 */
154 0x00A8, /* R116 - GPIO Control 1 */
155 0x00A8, /* R117 - GPIO Control 2 */
156 0x00A8, /* R118 - GPIO Control 3 */
157 0x0220, /* R119 - GPIO Control 4 */
158 0x01A0, /* R120 - GPIO Control 5 */
159 0x0000, /* R121 - Interrupt Status 1 */
160 0xFFFF, /* R122 - Interrupt Status 1 Mask */
161 0x0000, /* R123 - Interrupt Polarity 1 */
162 0x0000, /* R124 */
163 0x0003, /* R125 */
164 0x0000, /* R126 - Interrupt Control */
165 0x0000, /* R127 */
166 0x0005, /* R128 */
167 0x0000, /* R129 - Control Interface Test 1 */
168 0x0000, /* R130 */
169 0x0000, /* R131 */
170 0x0000, /* R132 */
171 0x0000, /* R133 */
172 0x0000, /* R134 */
173 0x03FF, /* R135 */
174 0x0007, /* R136 */
175 0x0040, /* R137 */
176 0x0000, /* R138 */
177 0x0000, /* R139 */
178 0x0000, /* R140 */
179 0x0000, /* R141 */
180 0x0000, /* R142 */
181 0x0000, /* R143 */
182 0x0000, /* R144 */
183 0x0000, /* R145 */
184 0x0000, /* R146 */
185 0x0000, /* R147 */
186 0x4000, /* R148 */
187 0x6810, /* R149 - Charge Pump Test 1 */
188 0x0004, /* R150 */
189 0x0000, /* R151 */
190 0x0000, /* R152 */
191 0x0000, /* R153 */
192 0x0000, /* R154 */
193 0x0000, /* R155 */
194 0x0000, /* R156 */
195 0x0000, /* R157 */
196 0x0000, /* R158 */
197 0x0000, /* R159 */
198 0x0000, /* R160 */
199 0x0000, /* R161 */
200 0x0000, /* R162 */
201 0x0000, /* R163 */
202 0x0028, /* R164 - Clock Rate Test 4 */
203 0x0004, /* R165 */
204 0x0000, /* R166 */
205 0x0060, /* R167 */
206 0x0000, /* R168 */
207 0x0000, /* R169 */
208 0x0000, /* R170 */
209 0x0000, /* R171 */
210 0x0000, /* R172 - Analogue Output Bias 0 */
211 };
212
213 struct wm8903_priv {
214 struct snd_soc_codec codec;
215 u16 reg_cache[ARRAY_SIZE(wm8903_reg_defaults)];
216
217 int sysclk;
218
219 /* Reference counts */
220 int charge_pump_users;
221 int class_w_users;
222 int playback_active;
223 int capture_active;
224
225 struct snd_pcm_substream *master_substream;
226 struct snd_pcm_substream *slave_substream;
227 };
228
229
230 static unsigned int wm8903_read_reg_cache(struct snd_soc_codec *codec,
231 unsigned int reg)
232 {
233 u16 *cache = codec->reg_cache;
234
235 BUG_ON(reg >= ARRAY_SIZE(wm8903_reg_defaults));
236
237 return cache[reg];
238 }
239
240 static unsigned int wm8903_hw_read(struct snd_soc_codec *codec, u8 reg)
241 {
242 struct i2c_msg xfer[2];
243 u16 data;
244 int ret;
245 struct i2c_client *client = codec->control_data;
246
247 /* Write register */
248 xfer[0].addr = client->addr;
249 xfer[0].flags = 0;
250 xfer[0].len = 1;
251 xfer[0].buf = &reg;
252
253 /* Read data */
254 xfer[1].addr = client->addr;
255 xfer[1].flags = I2C_M_RD;
256 xfer[1].len = 2;
257 xfer[1].buf = (u8 *)&data;
258
259 ret = i2c_transfer(client->adapter, xfer, 2);
260 if (ret != 2) {
261 pr_err("i2c_transfer returned %d\n", ret);
262 return 0;
263 }
264
265 return (data >> 8) | ((data & 0xff) << 8);
266 }
267
268 static unsigned int wm8903_read(struct snd_soc_codec *codec,
269 unsigned int reg)
270 {
271 switch (reg) {
272 case WM8903_SW_RESET_AND_ID:
273 case WM8903_REVISION_NUMBER:
274 case WM8903_INTERRUPT_STATUS_1:
275 case WM8903_WRITE_SEQUENCER_4:
276 return wm8903_hw_read(codec, reg);
277
278 default:
279 return wm8903_read_reg_cache(codec, reg);
280 }
281 }
282
283 static void wm8903_write_reg_cache(struct snd_soc_codec *codec,
284 u16 reg, unsigned int value)
285 {
286 u16 *cache = codec->reg_cache;
287
288 BUG_ON(reg >= ARRAY_SIZE(wm8903_reg_defaults));
289
290 switch (reg) {
291 case WM8903_SW_RESET_AND_ID:
292 case WM8903_REVISION_NUMBER:
293 break;
294
295 default:
296 cache[reg] = value;
297 break;
298 }
299 }
300
301 static int wm8903_write(struct snd_soc_codec *codec, unsigned int reg,
302 unsigned int value)
303 {
304 u8 data[3];
305
306 wm8903_write_reg_cache(codec, reg, value);
307
308 /* Data format is 1 byte of address followed by 2 bytes of data */
309 data[0] = reg;
310 data[1] = (value >> 8) & 0xff;
311 data[2] = value & 0xff;
312
313 if (codec->hw_write(codec->control_data, data, 3) == 2)
314 return 0;
315 else
316 return -EIO;
317 }
318
319 static int wm8903_run_sequence(struct snd_soc_codec *codec, unsigned int start)
320 {
321 u16 reg[5];
322 struct i2c_client *i2c = codec->control_data;
323
324 BUG_ON(start > 48);
325
326 /* Enable the sequencer */
327 reg[0] = wm8903_read(codec, WM8903_WRITE_SEQUENCER_0);
328 reg[0] |= WM8903_WSEQ_ENA;
329 wm8903_write(codec, WM8903_WRITE_SEQUENCER_0, reg[0]);
330
331 dev_dbg(&i2c->dev, "Starting sequence at %d\n", start);
332
333 wm8903_write(codec, WM8903_WRITE_SEQUENCER_3,
334 start | WM8903_WSEQ_START);
335
336 /* Wait for it to complete. If we have the interrupt wired up then
337 * we could block waiting for an interrupt, though polling may still
338 * be desirable for diagnostic purposes.
339 */
340 do {
341 msleep(10);
342
343 reg[4] = wm8903_read(codec, WM8903_WRITE_SEQUENCER_4);
344 } while (reg[4] & WM8903_WSEQ_BUSY);
345
346 dev_dbg(&i2c->dev, "Sequence complete\n");
347
348 /* Disable the sequencer again */
349 wm8903_write(codec, WM8903_WRITE_SEQUENCER_0,
350 reg[0] & ~WM8903_WSEQ_ENA);
351
352 return 0;
353 }
354
355 static void wm8903_sync_reg_cache(struct snd_soc_codec *codec, u16 *cache)
356 {
357 int i;
358
359 /* There really ought to be something better we can do here :/ */
360 for (i = 0; i < ARRAY_SIZE(wm8903_reg_defaults); i++)
361 cache[i] = wm8903_hw_read(codec, i);
362 }
363
364 static void wm8903_reset(struct snd_soc_codec *codec)
365 {
366 wm8903_write(codec, WM8903_SW_RESET_AND_ID, 0);
367 memcpy(codec->reg_cache, wm8903_reg_defaults,
368 sizeof(wm8903_reg_defaults));
369 }
370
371 #define WM8903_OUTPUT_SHORT 0x8
372 #define WM8903_OUTPUT_OUT 0x4
373 #define WM8903_OUTPUT_INT 0x2
374 #define WM8903_OUTPUT_IN 0x1
375
376 /*
377 * Event for headphone and line out amplifier power changes. Special
378 * power up/down sequences are required in order to maximise pop/click
379 * performance.
380 */
381 static int wm8903_output_event(struct snd_soc_dapm_widget *w,
382 struct snd_kcontrol *kcontrol, int event)
383 {
384 struct snd_soc_codec *codec = w->codec;
385 struct wm8903_priv *wm8903 = codec->private_data;
386 struct i2c_client *i2c = codec->control_data;
387 u16 val;
388 u16 reg;
389 int shift;
390 u16 cp_reg = wm8903_read(codec, WM8903_CHARGE_PUMP_0);
391
392 switch (w->reg) {
393 case WM8903_POWER_MANAGEMENT_2:
394 reg = WM8903_ANALOGUE_HP_0;
395 break;
396 case WM8903_POWER_MANAGEMENT_3:
397 reg = WM8903_ANALOGUE_LINEOUT_0;
398 break;
399 default:
400 BUG();
401 return -EINVAL; /* Spurious warning from some compilers */
402 }
403
404 switch (w->shift) {
405 case 0:
406 shift = 0;
407 break;
408 case 1:
409 shift = 4;
410 break;
411 default:
412 BUG();
413 return -EINVAL; /* Spurious warning from some compilers */
414 }
415
416 if (event & SND_SOC_DAPM_PRE_PMU) {
417 val = wm8903_read(codec, reg);
418
419 /* Short the output */
420 val &= ~(WM8903_OUTPUT_SHORT << shift);
421 wm8903_write(codec, reg, val);
422
423 wm8903->charge_pump_users++;
424
425 dev_dbg(&i2c->dev, "Charge pump use count now %d\n",
426 wm8903->charge_pump_users);
427
428 if (wm8903->charge_pump_users == 1) {
429 dev_dbg(&i2c->dev, "Enabling charge pump\n");
430 wm8903_write(codec, WM8903_CHARGE_PUMP_0,
431 cp_reg | WM8903_CP_ENA);
432 mdelay(4);
433 }
434 }
435
436 if (event & SND_SOC_DAPM_POST_PMU) {
437 val = wm8903_read(codec, reg);
438
439 val |= (WM8903_OUTPUT_IN << shift);
440 wm8903_write(codec, reg, val);
441
442 val |= (WM8903_OUTPUT_INT << shift);
443 wm8903_write(codec, reg, val);
444
445 /* Turn on the output ENA_OUTP */
446 val |= (WM8903_OUTPUT_OUT << shift);
447 wm8903_write(codec, reg, val);
448
449 /* Remove the short */
450 val |= (WM8903_OUTPUT_SHORT << shift);
451 wm8903_write(codec, reg, val);
452 }
453
454 if (event & SND_SOC_DAPM_PRE_PMD) {
455 val = wm8903_read(codec, reg);
456
457 /* Short the output */
458 val &= ~(WM8903_OUTPUT_SHORT << shift);
459 wm8903_write(codec, reg, val);
460
461 /* Then disable the intermediate and output stages */
462 val &= ~((WM8903_OUTPUT_OUT | WM8903_OUTPUT_INT |
463 WM8903_OUTPUT_IN) << shift);
464 wm8903_write(codec, reg, val);
465 }
466
467 if (event & SND_SOC_DAPM_POST_PMD) {
468 wm8903->charge_pump_users--;
469
470 dev_dbg(&i2c->dev, "Charge pump use count now %d\n",
471 wm8903->charge_pump_users);
472
473 if (wm8903->charge_pump_users == 0) {
474 dev_dbg(&i2c->dev, "Disabling charge pump\n");
475 wm8903_write(codec, WM8903_CHARGE_PUMP_0,
476 cp_reg & ~WM8903_CP_ENA);
477 }
478 }
479
480 return 0;
481 }
482
483 /*
484 * When used with DAC outputs only the WM8903 charge pump supports
485 * operation in class W mode, providing very low power consumption
486 * when used with digital sources. Enable and disable this mode
487 * automatically depending on the mixer configuration.
488 *
489 * All the relevant controls are simple switches.
490 */
491 static int wm8903_class_w_put(struct snd_kcontrol *kcontrol,
492 struct snd_ctl_elem_value *ucontrol)
493 {
494 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
495 struct snd_soc_codec *codec = widget->codec;
496 struct wm8903_priv *wm8903 = codec->private_data;
497 struct i2c_client *i2c = codec->control_data;
498 u16 reg;
499 int ret;
500
501 reg = wm8903_read(codec, WM8903_CLASS_W_0);
502
503 /* Turn it off if we're about to enable bypass */
504 if (ucontrol->value.integer.value[0]) {
505 if (wm8903->class_w_users == 0) {
506 dev_dbg(&i2c->dev, "Disabling Class W\n");
507 wm8903_write(codec, WM8903_CLASS_W_0, reg &
508 ~(WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V));
509 }
510 wm8903->class_w_users++;
511 }
512
513 /* Implement the change */
514 ret = snd_soc_dapm_put_volsw(kcontrol, ucontrol);
515
516 /* If we've just disabled the last bypass path turn Class W on */
517 if (!ucontrol->value.integer.value[0]) {
518 if (wm8903->class_w_users == 1) {
519 dev_dbg(&i2c->dev, "Enabling Class W\n");
520 wm8903_write(codec, WM8903_CLASS_W_0, reg |
521 WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V);
522 }
523 wm8903->class_w_users--;
524 }
525
526 dev_dbg(&i2c->dev, "Bypass use count now %d\n",
527 wm8903->class_w_users);
528
529 return ret;
530 }
531
532 #define SOC_DAPM_SINGLE_W(xname, reg, shift, max, invert) \
533 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
534 .info = snd_soc_info_volsw, \
535 .get = snd_soc_dapm_get_volsw, .put = wm8903_class_w_put, \
536 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
537
538
539 /* ALSA can only do steps of .01dB */
540 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
541
542 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
543
544 static const DECLARE_TLV_DB_SCALE(drc_tlv_thresh, 0, 75, 0);
545 static const DECLARE_TLV_DB_SCALE(drc_tlv_amp, -2250, 75, 0);
546 static const DECLARE_TLV_DB_SCALE(drc_tlv_min, 0, 600, 0);
547 static const DECLARE_TLV_DB_SCALE(drc_tlv_max, 1200, 600, 0);
548 static const DECLARE_TLV_DB_SCALE(drc_tlv_startup, -300, 50, 0);
549
550 static const char *drc_slope_text[] = {
551 "1", "1/2", "1/4", "1/8", "1/16", "0"
552 };
553
554 static const struct soc_enum drc_slope_r0 =
555 SOC_ENUM_SINGLE(WM8903_DRC_2, 3, 6, drc_slope_text);
556
557 static const struct soc_enum drc_slope_r1 =
558 SOC_ENUM_SINGLE(WM8903_DRC_2, 0, 6, drc_slope_text);
559
560 static const char *drc_attack_text[] = {
561 "instantaneous",
562 "363us", "762us", "1.45ms", "2.9ms", "5.8ms", "11.6ms", "23.2ms",
563 "46.4ms", "92.8ms", "185.6ms"
564 };
565
566 static const struct soc_enum drc_attack =
567 SOC_ENUM_SINGLE(WM8903_DRC_1, 12, 11, drc_attack_text);
568
569 static const char *drc_decay_text[] = {
570 "186ms", "372ms", "743ms", "1.49s", "2.97s", "5.94s", "11.89s",
571 "23.87s", "47.56s"
572 };
573
574 static const struct soc_enum drc_decay =
575 SOC_ENUM_SINGLE(WM8903_DRC_1, 8, 9, drc_decay_text);
576
577 static const char *drc_ff_delay_text[] = {
578 "5 samples", "9 samples"
579 };
580
581 static const struct soc_enum drc_ff_delay =
582 SOC_ENUM_SINGLE(WM8903_DRC_0, 5, 2, drc_ff_delay_text);
583
584 static const char *drc_qr_decay_text[] = {
585 "0.725ms", "1.45ms", "5.8ms"
586 };
587
588 static const struct soc_enum drc_qr_decay =
589 SOC_ENUM_SINGLE(WM8903_DRC_1, 4, 3, drc_qr_decay_text);
590
591 static const char *drc_smoothing_text[] = {
592 "Low", "Medium", "High"
593 };
594
595 static const struct soc_enum drc_smoothing =
596 SOC_ENUM_SINGLE(WM8903_DRC_0, 11, 3, drc_smoothing_text);
597
598 static const char *soft_mute_text[] = {
599 "Fast (fs/2)", "Slow (fs/32)"
600 };
601
602 static const struct soc_enum soft_mute =
603 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_1, 10, 2, soft_mute_text);
604
605 static const char *mute_mode_text[] = {
606 "Hard", "Soft"
607 };
608
609 static const struct soc_enum mute_mode =
610 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_1, 9, 2, mute_mode_text);
611
612 static const char *dac_deemphasis_text[] = {
613 "Disabled", "32kHz", "44.1kHz", "48kHz"
614 };
615
616 static const struct soc_enum dac_deemphasis =
617 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_1, 1, 4, dac_deemphasis_text);
618
619 static const char *companding_text[] = {
620 "ulaw", "alaw"
621 };
622
623 static const struct soc_enum dac_companding =
624 SOC_ENUM_SINGLE(WM8903_AUDIO_INTERFACE_0, 0, 2, companding_text);
625
626 static const struct soc_enum adc_companding =
627 SOC_ENUM_SINGLE(WM8903_AUDIO_INTERFACE_0, 2, 2, companding_text);
628
629 static const char *input_mode_text[] = {
630 "Single-Ended", "Differential Line", "Differential Mic"
631 };
632
633 static const struct soc_enum linput_mode_enum =
634 SOC_ENUM_SINGLE(WM8903_ANALOGUE_LEFT_INPUT_1, 0, 3, input_mode_text);
635
636 static const struct soc_enum rinput_mode_enum =
637 SOC_ENUM_SINGLE(WM8903_ANALOGUE_RIGHT_INPUT_1, 0, 3, input_mode_text);
638
639 static const char *linput_mux_text[] = {
640 "IN1L", "IN2L", "IN3L"
641 };
642
643 static const struct soc_enum linput_enum =
644 SOC_ENUM_SINGLE(WM8903_ANALOGUE_LEFT_INPUT_1, 2, 3, linput_mux_text);
645
646 static const struct soc_enum linput_inv_enum =
647 SOC_ENUM_SINGLE(WM8903_ANALOGUE_LEFT_INPUT_1, 4, 3, linput_mux_text);
648
649 static const char *rinput_mux_text[] = {
650 "IN1R", "IN2R", "IN3R"
651 };
652
653 static const struct soc_enum rinput_enum =
654 SOC_ENUM_SINGLE(WM8903_ANALOGUE_RIGHT_INPUT_1, 2, 3, rinput_mux_text);
655
656 static const struct soc_enum rinput_inv_enum =
657 SOC_ENUM_SINGLE(WM8903_ANALOGUE_RIGHT_INPUT_1, 4, 3, rinput_mux_text);
658
659
660 static const struct snd_kcontrol_new wm8903_snd_controls[] = {
661
662 /* Input PGAs - No TLV since the scale depends on PGA mode */
663 SOC_SINGLE("Left Input PGA Switch", WM8903_ANALOGUE_LEFT_INPUT_0,
664 7, 1, 1),
665 SOC_SINGLE("Left Input PGA Volume", WM8903_ANALOGUE_LEFT_INPUT_0,
666 0, 31, 0),
667 SOC_SINGLE("Left Input PGA Common Mode Switch", WM8903_ANALOGUE_LEFT_INPUT_1,
668 6, 1, 0),
669
670 SOC_SINGLE("Right Input PGA Switch", WM8903_ANALOGUE_RIGHT_INPUT_0,
671 7, 1, 1),
672 SOC_SINGLE("Right Input PGA Volume", WM8903_ANALOGUE_RIGHT_INPUT_0,
673 0, 31, 0),
674 SOC_SINGLE("Right Input PGA Common Mode Switch", WM8903_ANALOGUE_RIGHT_INPUT_1,
675 6, 1, 0),
676
677 /* ADCs */
678 SOC_SINGLE("DRC Switch", WM8903_DRC_0, 15, 1, 0),
679 SOC_ENUM("DRC Compressor Slope R0", drc_slope_r0),
680 SOC_ENUM("DRC Compressor Slope R1", drc_slope_r1),
681 SOC_SINGLE_TLV("DRC Compressor Threashold Volume", WM8903_DRC_3, 5, 124, 1,
682 drc_tlv_thresh),
683 SOC_SINGLE_TLV("DRC Volume", WM8903_DRC_3, 0, 30, 1, drc_tlv_amp),
684 SOC_SINGLE_TLV("DRC Minimum Gain Volume", WM8903_DRC_1, 2, 3, 1, drc_tlv_min),
685 SOC_SINGLE_TLV("DRC Maximum Gain Volume", WM8903_DRC_1, 0, 3, 0, drc_tlv_max),
686 SOC_ENUM("DRC Attack Rate", drc_attack),
687 SOC_ENUM("DRC Decay Rate", drc_decay),
688 SOC_ENUM("DRC FF Delay", drc_ff_delay),
689 SOC_SINGLE("DRC Anticlip Switch", WM8903_DRC_0, 1, 1, 0),
690 SOC_SINGLE("DRC QR Switch", WM8903_DRC_0, 2, 1, 0),
691 SOC_SINGLE_TLV("DRC QR Threashold Volume", WM8903_DRC_0, 6, 3, 0, drc_tlv_max),
692 SOC_ENUM("DRC QR Decay Rate", drc_qr_decay),
693 SOC_SINGLE("DRC Smoothing Switch", WM8903_DRC_0, 3, 1, 0),
694 SOC_SINGLE("DRC Smoothing Hysteresis Switch", WM8903_DRC_0, 0, 1, 0),
695 SOC_ENUM("DRC Smoothing Threashold", drc_smoothing),
696 SOC_SINGLE_TLV("DRC Startup Volume", WM8903_DRC_0, 6, 18, 0, drc_tlv_startup),
697
698 SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8903_ADC_DIGITAL_VOLUME_LEFT,
699 WM8903_ADC_DIGITAL_VOLUME_RIGHT, 1, 96, 0, digital_tlv),
700 SOC_ENUM("ADC Companding Mode", adc_companding),
701 SOC_SINGLE("ADC Companding Switch", WM8903_AUDIO_INTERFACE_0, 3, 1, 0),
702
703 /* DAC */
704 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8903_DAC_DIGITAL_VOLUME_LEFT,
705 WM8903_DAC_DIGITAL_VOLUME_RIGHT, 1, 120, 0, digital_tlv),
706 SOC_ENUM("DAC Soft Mute Rate", soft_mute),
707 SOC_ENUM("DAC Mute Mode", mute_mode),
708 SOC_SINGLE("DAC Mono Switch", WM8903_DAC_DIGITAL_1, 12, 1, 0),
709 SOC_ENUM("DAC De-emphasis", dac_deemphasis),
710 SOC_SINGLE("DAC Sloping Stopband Filter Switch",
711 WM8903_DAC_DIGITAL_1, 11, 1, 0),
712 SOC_ENUM("DAC Companding Mode", dac_companding),
713 SOC_SINGLE("DAC Companding Switch", WM8903_AUDIO_INTERFACE_0, 1, 1, 0),
714
715 /* Headphones */
716 SOC_DOUBLE_R("Headphone Switch",
717 WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
718 8, 1, 1),
719 SOC_DOUBLE_R("Headphone ZC Switch",
720 WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
721 6, 1, 0),
722 SOC_DOUBLE_R_TLV("Headphone Volume",
723 WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
724 0, 63, 0, out_tlv),
725
726 /* Line out */
727 SOC_DOUBLE_R("Line Out Switch",
728 WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
729 8, 1, 1),
730 SOC_DOUBLE_R("Line Out ZC Switch",
731 WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
732 6, 1, 0),
733 SOC_DOUBLE_R_TLV("Line Out Volume",
734 WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
735 0, 63, 0, out_tlv),
736
737 /* Speaker */
738 SOC_DOUBLE_R("Speaker Switch",
739 WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT, 8, 1, 1),
740 SOC_DOUBLE_R("Speaker ZC Switch",
741 WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT, 6, 1, 0),
742 SOC_DOUBLE_R_TLV("Speaker Volume",
743 WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT,
744 0, 63, 0, out_tlv),
745 };
746
747 static const struct snd_kcontrol_new linput_mode_mux =
748 SOC_DAPM_ENUM("Left Input Mode Mux", linput_mode_enum);
749
750 static const struct snd_kcontrol_new rinput_mode_mux =
751 SOC_DAPM_ENUM("Right Input Mode Mux", rinput_mode_enum);
752
753 static const struct snd_kcontrol_new linput_mux =
754 SOC_DAPM_ENUM("Left Input Mux", linput_enum);
755
756 static const struct snd_kcontrol_new linput_inv_mux =
757 SOC_DAPM_ENUM("Left Inverting Input Mux", linput_inv_enum);
758
759 static const struct snd_kcontrol_new rinput_mux =
760 SOC_DAPM_ENUM("Right Input Mux", rinput_enum);
761
762 static const struct snd_kcontrol_new rinput_inv_mux =
763 SOC_DAPM_ENUM("Right Inverting Input Mux", rinput_inv_enum);
764
765 static const struct snd_kcontrol_new left_output_mixer[] = {
766 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_LEFT_MIX_0, 3, 1, 0),
767 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_LEFT_MIX_0, 2, 1, 0),
768 SOC_DAPM_SINGLE_W("Left Bypass Switch", WM8903_ANALOGUE_LEFT_MIX_0, 1, 1, 0),
769 SOC_DAPM_SINGLE_W("Right Bypass Switch", WM8903_ANALOGUE_LEFT_MIX_0, 0, 1, 0),
770 };
771
772 static const struct snd_kcontrol_new right_output_mixer[] = {
773 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 3, 1, 0),
774 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 2, 1, 0),
775 SOC_DAPM_SINGLE_W("Left Bypass Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 1, 1, 0),
776 SOC_DAPM_SINGLE_W("Right Bypass Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 0, 1, 0),
777 };
778
779 static const struct snd_kcontrol_new left_speaker_mixer[] = {
780 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 3, 1, 0),
781 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 2, 1, 0),
782 SOC_DAPM_SINGLE("Left Bypass Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 1, 1, 0),
783 SOC_DAPM_SINGLE("Right Bypass Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0,
784 0, 1, 0),
785 };
786
787 static const struct snd_kcontrol_new right_speaker_mixer[] = {
788 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0, 3, 1, 0),
789 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0, 2, 1, 0),
790 SOC_DAPM_SINGLE("Left Bypass Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0,
791 1, 1, 0),
792 SOC_DAPM_SINGLE("Right Bypass Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0,
793 0, 1, 0),
794 };
795
796 static const struct snd_soc_dapm_widget wm8903_dapm_widgets[] = {
797 SND_SOC_DAPM_INPUT("IN1L"),
798 SND_SOC_DAPM_INPUT("IN1R"),
799 SND_SOC_DAPM_INPUT("IN2L"),
800 SND_SOC_DAPM_INPUT("IN2R"),
801 SND_SOC_DAPM_INPUT("IN3L"),
802 SND_SOC_DAPM_INPUT("IN3R"),
803
804 SND_SOC_DAPM_OUTPUT("HPOUTL"),
805 SND_SOC_DAPM_OUTPUT("HPOUTR"),
806 SND_SOC_DAPM_OUTPUT("LINEOUTL"),
807 SND_SOC_DAPM_OUTPUT("LINEOUTR"),
808 SND_SOC_DAPM_OUTPUT("LOP"),
809 SND_SOC_DAPM_OUTPUT("LON"),
810 SND_SOC_DAPM_OUTPUT("ROP"),
811 SND_SOC_DAPM_OUTPUT("RON"),
812
813 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8903_MIC_BIAS_CONTROL_0, 0, 0),
814
815 SND_SOC_DAPM_MUX("Left Input Mux", SND_SOC_NOPM, 0, 0, &linput_mux),
816 SND_SOC_DAPM_MUX("Left Input Inverting Mux", SND_SOC_NOPM, 0, 0,
817 &linput_inv_mux),
818 SND_SOC_DAPM_MUX("Left Input Mode Mux", SND_SOC_NOPM, 0, 0, &linput_mode_mux),
819
820 SND_SOC_DAPM_MUX("Right Input Mux", SND_SOC_NOPM, 0, 0, &rinput_mux),
821 SND_SOC_DAPM_MUX("Right Input Inverting Mux", SND_SOC_NOPM, 0, 0,
822 &rinput_inv_mux),
823 SND_SOC_DAPM_MUX("Right Input Mode Mux", SND_SOC_NOPM, 0, 0, &rinput_mode_mux),
824
825 SND_SOC_DAPM_PGA("Left Input PGA", WM8903_POWER_MANAGEMENT_0, 1, 0, NULL, 0),
826 SND_SOC_DAPM_PGA("Right Input PGA", WM8903_POWER_MANAGEMENT_0, 0, 0, NULL, 0),
827
828 SND_SOC_DAPM_ADC("ADCL", "Left HiFi Capture", WM8903_POWER_MANAGEMENT_6, 1, 0),
829 SND_SOC_DAPM_ADC("ADCR", "Right HiFi Capture", WM8903_POWER_MANAGEMENT_6, 0, 0),
830
831 SND_SOC_DAPM_DAC("DACL", "Left Playback", WM8903_POWER_MANAGEMENT_6, 3, 0),
832 SND_SOC_DAPM_DAC("DACR", "Right Playback", WM8903_POWER_MANAGEMENT_6, 2, 0),
833
834 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8903_POWER_MANAGEMENT_1, 1, 0,
835 left_output_mixer, ARRAY_SIZE(left_output_mixer)),
836 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8903_POWER_MANAGEMENT_1, 0, 0,
837 right_output_mixer, ARRAY_SIZE(right_output_mixer)),
838
839 SND_SOC_DAPM_MIXER("Left Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 1, 0,
840 left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
841 SND_SOC_DAPM_MIXER("Right Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 0, 0,
842 right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
843
844 SND_SOC_DAPM_PGA_E("Left Headphone Output PGA", WM8903_POWER_MANAGEMENT_2,
845 1, 0, NULL, 0, wm8903_output_event,
846 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
847 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
848 SND_SOC_DAPM_PGA_E("Right Headphone Output PGA", WM8903_POWER_MANAGEMENT_2,
849 0, 0, NULL, 0, wm8903_output_event,
850 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
851 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
852
853 SND_SOC_DAPM_PGA_E("Left Line Output PGA", WM8903_POWER_MANAGEMENT_3, 1, 0,
854 NULL, 0, wm8903_output_event,
855 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
856 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
857 SND_SOC_DAPM_PGA_E("Right Line Output PGA", WM8903_POWER_MANAGEMENT_3, 0, 0,
858 NULL, 0, wm8903_output_event,
859 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
860 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
861
862 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8903_POWER_MANAGEMENT_5, 1, 0,
863 NULL, 0),
864 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8903_POWER_MANAGEMENT_5, 0, 0,
865 NULL, 0),
866
867 };
868
869 static const struct snd_soc_dapm_route intercon[] = {
870
871 { "Left Input Mux", "IN1L", "IN1L" },
872 { "Left Input Mux", "IN2L", "IN2L" },
873 { "Left Input Mux", "IN3L", "IN3L" },
874
875 { "Left Input Inverting Mux", "IN1L", "IN1L" },
876 { "Left Input Inverting Mux", "IN2L", "IN2L" },
877 { "Left Input Inverting Mux", "IN3L", "IN3L" },
878
879 { "Right Input Mux", "IN1R", "IN1R" },
880 { "Right Input Mux", "IN2R", "IN2R" },
881 { "Right Input Mux", "IN3R", "IN3R" },
882
883 { "Right Input Inverting Mux", "IN1R", "IN1R" },
884 { "Right Input Inverting Mux", "IN2R", "IN2R" },
885 { "Right Input Inverting Mux", "IN3R", "IN3R" },
886
887 { "Left Input Mode Mux", "Single-Ended", "Left Input Inverting Mux" },
888 { "Left Input Mode Mux", "Differential Line",
889 "Left Input Mux" },
890 { "Left Input Mode Mux", "Differential Line",
891 "Left Input Inverting Mux" },
892 { "Left Input Mode Mux", "Differential Mic",
893 "Left Input Mux" },
894 { "Left Input Mode Mux", "Differential Mic",
895 "Left Input Inverting Mux" },
896
897 { "Right Input Mode Mux", "Single-Ended",
898 "Right Input Inverting Mux" },
899 { "Right Input Mode Mux", "Differential Line",
900 "Right Input Mux" },
901 { "Right Input Mode Mux", "Differential Line",
902 "Right Input Inverting Mux" },
903 { "Right Input Mode Mux", "Differential Mic",
904 "Right Input Mux" },
905 { "Right Input Mode Mux", "Differential Mic",
906 "Right Input Inverting Mux" },
907
908 { "Left Input PGA", NULL, "Left Input Mode Mux" },
909 { "Right Input PGA", NULL, "Right Input Mode Mux" },
910
911 { "ADCL", NULL, "Left Input PGA" },
912 { "ADCR", NULL, "Right Input PGA" },
913
914 { "Left Output Mixer", "Left Bypass Switch", "Left Input PGA" },
915 { "Left Output Mixer", "Right Bypass Switch", "Right Input PGA" },
916 { "Left Output Mixer", "DACL Switch", "DACL" },
917 { "Left Output Mixer", "DACR Switch", "DACR" },
918
919 { "Right Output Mixer", "Left Bypass Switch", "Left Input PGA" },
920 { "Right Output Mixer", "Right Bypass Switch", "Right Input PGA" },
921 { "Right Output Mixer", "DACL Switch", "DACL" },
922 { "Right Output Mixer", "DACR Switch", "DACR" },
923
924 { "Left Speaker Mixer", "Left Bypass Switch", "Left Input PGA" },
925 { "Left Speaker Mixer", "Right Bypass Switch", "Right Input PGA" },
926 { "Left Speaker Mixer", "DACL Switch", "DACL" },
927 { "Left Speaker Mixer", "DACR Switch", "DACR" },
928
929 { "Right Speaker Mixer", "Left Bypass Switch", "Left Input PGA" },
930 { "Right Speaker Mixer", "Right Bypass Switch", "Right Input PGA" },
931 { "Right Speaker Mixer", "DACL Switch", "DACL" },
932 { "Right Speaker Mixer", "DACR Switch", "DACR" },
933
934 { "Left Line Output PGA", NULL, "Left Output Mixer" },
935 { "Right Line Output PGA", NULL, "Right Output Mixer" },
936
937 { "Left Headphone Output PGA", NULL, "Left Output Mixer" },
938 { "Right Headphone Output PGA", NULL, "Right Output Mixer" },
939
940 { "Left Speaker PGA", NULL, "Left Speaker Mixer" },
941 { "Right Speaker PGA", NULL, "Right Speaker Mixer" },
942
943 { "HPOUTL", NULL, "Left Headphone Output PGA" },
944 { "HPOUTR", NULL, "Right Headphone Output PGA" },
945
946 { "LINEOUTL", NULL, "Left Line Output PGA" },
947 { "LINEOUTR", NULL, "Right Line Output PGA" },
948
949 { "LOP", NULL, "Left Speaker PGA" },
950 { "LON", NULL, "Left Speaker PGA" },
951
952 { "ROP", NULL, "Right Speaker PGA" },
953 { "RON", NULL, "Right Speaker PGA" },
954 };
955
956 static int wm8903_add_widgets(struct snd_soc_codec *codec)
957 {
958 snd_soc_dapm_new_controls(codec, wm8903_dapm_widgets,
959 ARRAY_SIZE(wm8903_dapm_widgets));
960
961 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
962
963 snd_soc_dapm_new_widgets(codec);
964
965 return 0;
966 }
967
968 static int wm8903_set_bias_level(struct snd_soc_codec *codec,
969 enum snd_soc_bias_level level)
970 {
971 struct i2c_client *i2c = codec->control_data;
972 u16 reg, reg2;
973
974 switch (level) {
975 case SND_SOC_BIAS_ON:
976 case SND_SOC_BIAS_PREPARE:
977 reg = wm8903_read(codec, WM8903_VMID_CONTROL_0);
978 reg &= ~(WM8903_VMID_RES_MASK);
979 reg |= WM8903_VMID_RES_50K;
980 wm8903_write(codec, WM8903_VMID_CONTROL_0, reg);
981 break;
982
983 case SND_SOC_BIAS_STANDBY:
984 if (codec->bias_level == SND_SOC_BIAS_OFF) {
985 wm8903_write(codec, WM8903_CLOCK_RATES_2,
986 WM8903_CLK_SYS_ENA);
987
988 wm8903_run_sequence(codec, 0);
989 wm8903_sync_reg_cache(codec, codec->reg_cache);
990
991 /* Enable low impedence charge pump output */
992 reg = wm8903_read(codec,
993 WM8903_CONTROL_INTERFACE_TEST_1);
994 wm8903_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
995 reg | WM8903_TEST_KEY);
996 reg2 = wm8903_read(codec, WM8903_CHARGE_PUMP_TEST_1);
997 wm8903_write(codec, WM8903_CHARGE_PUMP_TEST_1,
998 reg2 | WM8903_CP_SW_KELVIN_MODE_MASK);
999 wm8903_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
1000 reg);
1001
1002 /* By default no bypass paths are enabled so
1003 * enable Class W support.
1004 */
1005 dev_dbg(&i2c->dev, "Enabling Class W\n");
1006 wm8903_write(codec, WM8903_CLASS_W_0, reg |
1007 WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V);
1008 }
1009
1010 reg = wm8903_read(codec, WM8903_VMID_CONTROL_0);
1011 reg &= ~(WM8903_VMID_RES_MASK);
1012 reg |= WM8903_VMID_RES_250K;
1013 wm8903_write(codec, WM8903_VMID_CONTROL_0, reg);
1014 break;
1015
1016 case SND_SOC_BIAS_OFF:
1017 wm8903_run_sequence(codec, 32);
1018 reg = wm8903_read(codec, WM8903_CLOCK_RATES_2);
1019 reg &= ~WM8903_CLK_SYS_ENA;
1020 wm8903_write(codec, WM8903_CLOCK_RATES_2, reg);
1021 break;
1022 }
1023
1024 codec->bias_level = level;
1025
1026 return 0;
1027 }
1028
1029 static int wm8903_set_dai_sysclk(struct snd_soc_dai *codec_dai,
1030 int clk_id, unsigned int freq, int dir)
1031 {
1032 struct snd_soc_codec *codec = codec_dai->codec;
1033 struct wm8903_priv *wm8903 = codec->private_data;
1034
1035 wm8903->sysclk = freq;
1036
1037 return 0;
1038 }
1039
1040 static int wm8903_set_dai_fmt(struct snd_soc_dai *codec_dai,
1041 unsigned int fmt)
1042 {
1043 struct snd_soc_codec *codec = codec_dai->codec;
1044 u16 aif1 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_1);
1045
1046 aif1 &= ~(WM8903_LRCLK_DIR | WM8903_BCLK_DIR | WM8903_AIF_FMT_MASK |
1047 WM8903_AIF_LRCLK_INV | WM8903_AIF_BCLK_INV);
1048
1049 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1050 case SND_SOC_DAIFMT_CBS_CFS:
1051 break;
1052 case SND_SOC_DAIFMT_CBS_CFM:
1053 aif1 |= WM8903_LRCLK_DIR;
1054 break;
1055 case SND_SOC_DAIFMT_CBM_CFM:
1056 aif1 |= WM8903_LRCLK_DIR | WM8903_BCLK_DIR;
1057 break;
1058 case SND_SOC_DAIFMT_CBM_CFS:
1059 aif1 |= WM8903_BCLK_DIR;
1060 break;
1061 default:
1062 return -EINVAL;
1063 }
1064
1065 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1066 case SND_SOC_DAIFMT_DSP_A:
1067 aif1 |= 0x3;
1068 break;
1069 case SND_SOC_DAIFMT_DSP_B:
1070 aif1 |= 0x3 | WM8903_AIF_LRCLK_INV;
1071 break;
1072 case SND_SOC_DAIFMT_I2S:
1073 aif1 |= 0x2;
1074 break;
1075 case SND_SOC_DAIFMT_RIGHT_J:
1076 aif1 |= 0x1;
1077 break;
1078 case SND_SOC_DAIFMT_LEFT_J:
1079 break;
1080 default:
1081 return -EINVAL;
1082 }
1083
1084 /* Clock inversion */
1085 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1086 case SND_SOC_DAIFMT_DSP_A:
1087 case SND_SOC_DAIFMT_DSP_B:
1088 /* frame inversion not valid for DSP modes */
1089 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1090 case SND_SOC_DAIFMT_NB_NF:
1091 break;
1092 case SND_SOC_DAIFMT_IB_NF:
1093 aif1 |= WM8903_AIF_BCLK_INV;
1094 break;
1095 default:
1096 return -EINVAL;
1097 }
1098 break;
1099 case SND_SOC_DAIFMT_I2S:
1100 case SND_SOC_DAIFMT_RIGHT_J:
1101 case SND_SOC_DAIFMT_LEFT_J:
1102 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1103 case SND_SOC_DAIFMT_NB_NF:
1104 break;
1105 case SND_SOC_DAIFMT_IB_IF:
1106 aif1 |= WM8903_AIF_BCLK_INV | WM8903_AIF_LRCLK_INV;
1107 break;
1108 case SND_SOC_DAIFMT_IB_NF:
1109 aif1 |= WM8903_AIF_BCLK_INV;
1110 break;
1111 case SND_SOC_DAIFMT_NB_IF:
1112 aif1 |= WM8903_AIF_LRCLK_INV;
1113 break;
1114 default:
1115 return -EINVAL;
1116 }
1117 break;
1118 default:
1119 return -EINVAL;
1120 }
1121
1122 wm8903_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
1123
1124 return 0;
1125 }
1126
1127 static int wm8903_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1128 {
1129 struct snd_soc_codec *codec = codec_dai->codec;
1130 u16 reg;
1131
1132 reg = wm8903_read(codec, WM8903_DAC_DIGITAL_1);
1133
1134 if (mute)
1135 reg |= WM8903_DAC_MUTE;
1136 else
1137 reg &= ~WM8903_DAC_MUTE;
1138
1139 wm8903_write(codec, WM8903_DAC_DIGITAL_1, reg);
1140
1141 return 0;
1142 }
1143
1144 /* Lookup table for CLK_SYS/fs ratio. 256fs or more is recommended
1145 * for optimal performance so we list the lower rates first and match
1146 * on the last match we find. */
1147 static struct {
1148 int div;
1149 int rate;
1150 int mode;
1151 int mclk_div;
1152 } clk_sys_ratios[] = {
1153 { 64, 0x0, 0x0, 1 },
1154 { 68, 0x0, 0x1, 1 },
1155 { 125, 0x0, 0x2, 1 },
1156 { 128, 0x1, 0x0, 1 },
1157 { 136, 0x1, 0x1, 1 },
1158 { 192, 0x2, 0x0, 1 },
1159 { 204, 0x2, 0x1, 1 },
1160
1161 { 64, 0x0, 0x0, 2 },
1162 { 68, 0x0, 0x1, 2 },
1163 { 125, 0x0, 0x2, 2 },
1164 { 128, 0x1, 0x0, 2 },
1165 { 136, 0x1, 0x1, 2 },
1166 { 192, 0x2, 0x0, 2 },
1167 { 204, 0x2, 0x1, 2 },
1168
1169 { 250, 0x2, 0x2, 1 },
1170 { 256, 0x3, 0x0, 1 },
1171 { 272, 0x3, 0x1, 1 },
1172 { 384, 0x4, 0x0, 1 },
1173 { 408, 0x4, 0x1, 1 },
1174 { 375, 0x4, 0x2, 1 },
1175 { 512, 0x5, 0x0, 1 },
1176 { 544, 0x5, 0x1, 1 },
1177 { 500, 0x5, 0x2, 1 },
1178 { 768, 0x6, 0x0, 1 },
1179 { 816, 0x6, 0x1, 1 },
1180 { 750, 0x6, 0x2, 1 },
1181 { 1024, 0x7, 0x0, 1 },
1182 { 1088, 0x7, 0x1, 1 },
1183 { 1000, 0x7, 0x2, 1 },
1184 { 1408, 0x8, 0x0, 1 },
1185 { 1496, 0x8, 0x1, 1 },
1186 { 1536, 0x9, 0x0, 1 },
1187 { 1632, 0x9, 0x1, 1 },
1188 { 1500, 0x9, 0x2, 1 },
1189
1190 { 250, 0x2, 0x2, 2 },
1191 { 256, 0x3, 0x0, 2 },
1192 { 272, 0x3, 0x1, 2 },
1193 { 384, 0x4, 0x0, 2 },
1194 { 408, 0x4, 0x1, 2 },
1195 { 375, 0x4, 0x2, 2 },
1196 { 512, 0x5, 0x0, 2 },
1197 { 544, 0x5, 0x1, 2 },
1198 { 500, 0x5, 0x2, 2 },
1199 { 768, 0x6, 0x0, 2 },
1200 { 816, 0x6, 0x1, 2 },
1201 { 750, 0x6, 0x2, 2 },
1202 { 1024, 0x7, 0x0, 2 },
1203 { 1088, 0x7, 0x1, 2 },
1204 { 1000, 0x7, 0x2, 2 },
1205 { 1408, 0x8, 0x0, 2 },
1206 { 1496, 0x8, 0x1, 2 },
1207 { 1536, 0x9, 0x0, 2 },
1208 { 1632, 0x9, 0x1, 2 },
1209 { 1500, 0x9, 0x2, 2 },
1210 };
1211
1212 /* CLK_SYS/BCLK ratios - multiplied by 10 due to .5s */
1213 static struct {
1214 int ratio;
1215 int div;
1216 } bclk_divs[] = {
1217 { 10, 0 },
1218 { 15, 1 },
1219 { 20, 2 },
1220 { 30, 3 },
1221 { 40, 4 },
1222 { 50, 5 },
1223 { 55, 6 },
1224 { 60, 7 },
1225 { 80, 8 },
1226 { 100, 9 },
1227 { 110, 10 },
1228 { 120, 11 },
1229 { 160, 12 },
1230 { 200, 13 },
1231 { 220, 14 },
1232 { 240, 15 },
1233 { 250, 16 },
1234 { 300, 17 },
1235 { 320, 18 },
1236 { 440, 19 },
1237 { 480, 20 },
1238 };
1239
1240 /* Sample rates for DSP */
1241 static struct {
1242 int rate;
1243 int value;
1244 } sample_rates[] = {
1245 { 8000, 0 },
1246 { 11025, 1 },
1247 { 12000, 2 },
1248 { 16000, 3 },
1249 { 22050, 4 },
1250 { 24000, 5 },
1251 { 32000, 6 },
1252 { 44100, 7 },
1253 { 48000, 8 },
1254 { 88200, 9 },
1255 { 96000, 10 },
1256 { 0, 0 },
1257 };
1258
1259 static int wm8903_startup(struct snd_pcm_substream *substream,
1260 struct snd_soc_dai *dai)
1261 {
1262 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1263 struct snd_soc_device *socdev = rtd->socdev;
1264 struct snd_soc_codec *codec = socdev->card->codec;
1265 struct wm8903_priv *wm8903 = codec->private_data;
1266 struct i2c_client *i2c = codec->control_data;
1267 struct snd_pcm_runtime *master_runtime;
1268
1269 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1270 wm8903->playback_active++;
1271 else
1272 wm8903->capture_active++;
1273
1274 /* The DAI has shared clocks so if we already have a playback or
1275 * capture going then constrain this substream to match it.
1276 */
1277 if (wm8903->master_substream) {
1278 master_runtime = wm8903->master_substream->runtime;
1279
1280 dev_dbg(&i2c->dev, "Constraining to %d bits at %dHz\n",
1281 master_runtime->sample_bits,
1282 master_runtime->rate);
1283
1284 snd_pcm_hw_constraint_minmax(substream->runtime,
1285 SNDRV_PCM_HW_PARAM_RATE,
1286 master_runtime->rate,
1287 master_runtime->rate);
1288
1289 snd_pcm_hw_constraint_minmax(substream->runtime,
1290 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
1291 master_runtime->sample_bits,
1292 master_runtime->sample_bits);
1293
1294 wm8903->slave_substream = substream;
1295 } else
1296 wm8903->master_substream = substream;
1297
1298 return 0;
1299 }
1300
1301 static void wm8903_shutdown(struct snd_pcm_substream *substream,
1302 struct snd_soc_dai *dai)
1303 {
1304 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1305 struct snd_soc_device *socdev = rtd->socdev;
1306 struct snd_soc_codec *codec = socdev->card->codec;
1307 struct wm8903_priv *wm8903 = codec->private_data;
1308
1309 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1310 wm8903->playback_active--;
1311 else
1312 wm8903->capture_active--;
1313
1314 if (wm8903->master_substream == substream)
1315 wm8903->master_substream = wm8903->slave_substream;
1316
1317 wm8903->slave_substream = NULL;
1318 }
1319
1320 static int wm8903_hw_params(struct snd_pcm_substream *substream,
1321 struct snd_pcm_hw_params *params,
1322 struct snd_soc_dai *dai)
1323 {
1324 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1325 struct snd_soc_device *socdev = rtd->socdev;
1326 struct snd_soc_codec *codec = socdev->card->codec;
1327 struct wm8903_priv *wm8903 = codec->private_data;
1328 struct i2c_client *i2c = codec->control_data;
1329 int fs = params_rate(params);
1330 int bclk;
1331 int bclk_div;
1332 int i;
1333 int dsp_config;
1334 int clk_config;
1335 int best_val;
1336 int cur_val;
1337 int clk_sys;
1338
1339 u16 aif1 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_1);
1340 u16 aif2 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_2);
1341 u16 aif3 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_3);
1342 u16 clock0 = wm8903_read(codec, WM8903_CLOCK_RATES_0);
1343 u16 clock1 = wm8903_read(codec, WM8903_CLOCK_RATES_1);
1344
1345 if (substream == wm8903->slave_substream) {
1346 dev_dbg(&i2c->dev, "Ignoring hw_params for slave substream\n");
1347 return 0;
1348 }
1349
1350 /* Configure sample rate logic for DSP - choose nearest rate */
1351 dsp_config = 0;
1352 best_val = abs(sample_rates[dsp_config].rate - fs);
1353 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1354 cur_val = abs(sample_rates[i].rate - fs);
1355 if (cur_val <= best_val) {
1356 dsp_config = i;
1357 best_val = cur_val;
1358 }
1359 }
1360
1361 /* Constraints should stop us hitting this but let's make sure */
1362 if (wm8903->capture_active)
1363 switch (sample_rates[dsp_config].rate) {
1364 case 88200:
1365 case 96000:
1366 dev_err(&i2c->dev, "%dHz unsupported by ADC\n",
1367 fs);
1368 return -EINVAL;
1369
1370 default:
1371 break;
1372 }
1373
1374 dev_dbg(&i2c->dev, "DSP fs = %dHz\n", sample_rates[dsp_config].rate);
1375 clock1 &= ~WM8903_SAMPLE_RATE_MASK;
1376 clock1 |= sample_rates[dsp_config].value;
1377
1378 aif1 &= ~WM8903_AIF_WL_MASK;
1379 bclk = 2 * fs;
1380 switch (params_format(params)) {
1381 case SNDRV_PCM_FORMAT_S16_LE:
1382 bclk *= 16;
1383 break;
1384 case SNDRV_PCM_FORMAT_S20_3LE:
1385 bclk *= 20;
1386 aif1 |= 0x4;
1387 break;
1388 case SNDRV_PCM_FORMAT_S24_LE:
1389 bclk *= 24;
1390 aif1 |= 0x8;
1391 break;
1392 case SNDRV_PCM_FORMAT_S32_LE:
1393 bclk *= 32;
1394 aif1 |= 0xc;
1395 break;
1396 default:
1397 return -EINVAL;
1398 }
1399
1400 dev_dbg(&i2c->dev, "MCLK = %dHz, target sample rate = %dHz\n",
1401 wm8903->sysclk, fs);
1402
1403 /* We may not have an MCLK which allows us to generate exactly
1404 * the clock we want, particularly with USB derived inputs, so
1405 * approximate.
1406 */
1407 clk_config = 0;
1408 best_val = abs((wm8903->sysclk /
1409 (clk_sys_ratios[0].mclk_div *
1410 clk_sys_ratios[0].div)) - fs);
1411 for (i = 1; i < ARRAY_SIZE(clk_sys_ratios); i++) {
1412 cur_val = abs((wm8903->sysclk /
1413 (clk_sys_ratios[i].mclk_div *
1414 clk_sys_ratios[i].div)) - fs);
1415
1416 if (cur_val <= best_val) {
1417 clk_config = i;
1418 best_val = cur_val;
1419 }
1420 }
1421
1422 if (clk_sys_ratios[clk_config].mclk_div == 2) {
1423 clock0 |= WM8903_MCLKDIV2;
1424 clk_sys = wm8903->sysclk / 2;
1425 } else {
1426 clock0 &= ~WM8903_MCLKDIV2;
1427 clk_sys = wm8903->sysclk;
1428 }
1429
1430 clock1 &= ~(WM8903_CLK_SYS_RATE_MASK |
1431 WM8903_CLK_SYS_MODE_MASK);
1432 clock1 |= clk_sys_ratios[clk_config].rate << WM8903_CLK_SYS_RATE_SHIFT;
1433 clock1 |= clk_sys_ratios[clk_config].mode << WM8903_CLK_SYS_MODE_SHIFT;
1434
1435 dev_dbg(&i2c->dev, "CLK_SYS_RATE=%x, CLK_SYS_MODE=%x div=%d\n",
1436 clk_sys_ratios[clk_config].rate,
1437 clk_sys_ratios[clk_config].mode,
1438 clk_sys_ratios[clk_config].div);
1439
1440 dev_dbg(&i2c->dev, "Actual CLK_SYS = %dHz\n", clk_sys);
1441
1442 /* We may not get quite the right frequency if using
1443 * approximate clocks so look for the closest match that is
1444 * higher than the target (we need to ensure that there enough
1445 * BCLKs to clock out the samples).
1446 */
1447 bclk_div = 0;
1448 best_val = ((clk_sys * 10) / bclk_divs[0].ratio) - bclk;
1449 i = 1;
1450 while (i < ARRAY_SIZE(bclk_divs)) {
1451 cur_val = ((clk_sys * 10) / bclk_divs[i].ratio) - bclk;
1452 if (cur_val < 0) /* BCLK table is sorted */
1453 break;
1454 bclk_div = i;
1455 best_val = cur_val;
1456 i++;
1457 }
1458
1459 aif2 &= ~WM8903_BCLK_DIV_MASK;
1460 aif3 &= ~WM8903_LRCLK_RATE_MASK;
1461
1462 dev_dbg(&i2c->dev, "BCLK ratio %d for %dHz - actual BCLK = %dHz\n",
1463 bclk_divs[bclk_div].ratio / 10, bclk,
1464 (clk_sys * 10) / bclk_divs[bclk_div].ratio);
1465
1466 aif2 |= bclk_divs[bclk_div].div;
1467 aif3 |= bclk / fs;
1468
1469 wm8903_write(codec, WM8903_CLOCK_RATES_0, clock0);
1470 wm8903_write(codec, WM8903_CLOCK_RATES_1, clock1);
1471 wm8903_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
1472 wm8903_write(codec, WM8903_AUDIO_INTERFACE_2, aif2);
1473 wm8903_write(codec, WM8903_AUDIO_INTERFACE_3, aif3);
1474
1475 return 0;
1476 }
1477
1478 #define WM8903_PLAYBACK_RATES (SNDRV_PCM_RATE_8000 |\
1479 SNDRV_PCM_RATE_11025 | \
1480 SNDRV_PCM_RATE_16000 | \
1481 SNDRV_PCM_RATE_22050 | \
1482 SNDRV_PCM_RATE_32000 | \
1483 SNDRV_PCM_RATE_44100 | \
1484 SNDRV_PCM_RATE_48000 | \
1485 SNDRV_PCM_RATE_88200 | \
1486 SNDRV_PCM_RATE_96000)
1487
1488 #define WM8903_CAPTURE_RATES (SNDRV_PCM_RATE_8000 |\
1489 SNDRV_PCM_RATE_11025 | \
1490 SNDRV_PCM_RATE_16000 | \
1491 SNDRV_PCM_RATE_22050 | \
1492 SNDRV_PCM_RATE_32000 | \
1493 SNDRV_PCM_RATE_44100 | \
1494 SNDRV_PCM_RATE_48000)
1495
1496 #define WM8903_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
1497 SNDRV_PCM_FMTBIT_S20_3LE |\
1498 SNDRV_PCM_FMTBIT_S24_LE)
1499
1500 static struct snd_soc_dai_ops wm8903_dai_ops = {
1501 .startup = wm8903_startup,
1502 .shutdown = wm8903_shutdown,
1503 .hw_params = wm8903_hw_params,
1504 .digital_mute = wm8903_digital_mute,
1505 .set_fmt = wm8903_set_dai_fmt,
1506 .set_sysclk = wm8903_set_dai_sysclk,
1507 };
1508
1509 struct snd_soc_dai wm8903_dai = {
1510 .name = "WM8903",
1511 .playback = {
1512 .stream_name = "Playback",
1513 .channels_min = 2,
1514 .channels_max = 2,
1515 .rates = WM8903_PLAYBACK_RATES,
1516 .formats = WM8903_FORMATS,
1517 },
1518 .capture = {
1519 .stream_name = "Capture",
1520 .channels_min = 2,
1521 .channels_max = 2,
1522 .rates = WM8903_CAPTURE_RATES,
1523 .formats = WM8903_FORMATS,
1524 },
1525 .ops = &wm8903_dai_ops,
1526 };
1527 EXPORT_SYMBOL_GPL(wm8903_dai);
1528
1529 static int wm8903_suspend(struct platform_device *pdev, pm_message_t state)
1530 {
1531 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1532 struct snd_soc_codec *codec = socdev->card->codec;
1533
1534 wm8903_set_bias_level(codec, SND_SOC_BIAS_OFF);
1535
1536 return 0;
1537 }
1538
1539 static int wm8903_resume(struct platform_device *pdev)
1540 {
1541 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1542 struct snd_soc_codec *codec = socdev->card->codec;
1543 struct i2c_client *i2c = codec->control_data;
1544 int i;
1545 u16 *reg_cache = codec->reg_cache;
1546 u16 *tmp_cache = kmemdup(codec->reg_cache, sizeof(wm8903_reg_defaults),
1547 GFP_KERNEL);
1548
1549 /* Bring the codec back up to standby first to minimise pop/clicks */
1550 wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1551 wm8903_set_bias_level(codec, codec->suspend_bias_level);
1552
1553 /* Sync back everything else */
1554 if (tmp_cache) {
1555 for (i = 2; i < ARRAY_SIZE(wm8903_reg_defaults); i++)
1556 if (tmp_cache[i] != reg_cache[i])
1557 wm8903_write(codec, i, tmp_cache[i]);
1558 } else {
1559 dev_err(&i2c->dev, "Failed to allocate temporary cache\n");
1560 }
1561
1562 return 0;
1563 }
1564
1565 static struct snd_soc_codec *wm8903_codec;
1566
1567 static __devinit int wm8903_i2c_probe(struct i2c_client *i2c,
1568 const struct i2c_device_id *id)
1569 {
1570 struct wm8903_priv *wm8903;
1571 struct snd_soc_codec *codec;
1572 int ret;
1573 u16 val;
1574
1575 wm8903 = kzalloc(sizeof(struct wm8903_priv), GFP_KERNEL);
1576 if (wm8903 == NULL)
1577 return -ENOMEM;
1578
1579 codec = &wm8903->codec;
1580
1581 mutex_init(&codec->mutex);
1582 INIT_LIST_HEAD(&codec->dapm_widgets);
1583 INIT_LIST_HEAD(&codec->dapm_paths);
1584
1585 codec->dev = &i2c->dev;
1586 codec->name = "WM8903";
1587 codec->owner = THIS_MODULE;
1588 codec->read = wm8903_read;
1589 codec->write = wm8903_write;
1590 codec->hw_write = (hw_write_t)i2c_master_send;
1591 codec->bias_level = SND_SOC_BIAS_OFF;
1592 codec->set_bias_level = wm8903_set_bias_level;
1593 codec->dai = &wm8903_dai;
1594 codec->num_dai = 1;
1595 codec->reg_cache_size = ARRAY_SIZE(wm8903->reg_cache);
1596 codec->reg_cache = &wm8903->reg_cache[0];
1597 codec->private_data = wm8903;
1598
1599 i2c_set_clientdata(i2c, codec);
1600 codec->control_data = i2c;
1601
1602 val = wm8903_hw_read(codec, WM8903_SW_RESET_AND_ID);
1603 if (val != wm8903_reg_defaults[WM8903_SW_RESET_AND_ID]) {
1604 dev_err(&i2c->dev,
1605 "Device with ID register %x is not a WM8903\n", val);
1606 return -ENODEV;
1607 }
1608
1609 val = wm8903_read(codec, WM8903_REVISION_NUMBER);
1610 dev_info(&i2c->dev, "WM8903 revision %d\n",
1611 val & WM8903_CHIP_REV_MASK);
1612
1613 wm8903_reset(codec);
1614
1615 /* power on device */
1616 wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1617
1618 /* Latch volume update bits */
1619 val = wm8903_read(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT);
1620 val |= WM8903_ADCVU;
1621 wm8903_write(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT, val);
1622 wm8903_write(codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT, val);
1623
1624 val = wm8903_read(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT);
1625 val |= WM8903_DACVU;
1626 wm8903_write(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT, val);
1627 wm8903_write(codec, WM8903_DAC_DIGITAL_VOLUME_RIGHT, val);
1628
1629 val = wm8903_read(codec, WM8903_ANALOGUE_OUT1_LEFT);
1630 val |= WM8903_HPOUTVU;
1631 wm8903_write(codec, WM8903_ANALOGUE_OUT1_LEFT, val);
1632 wm8903_write(codec, WM8903_ANALOGUE_OUT1_RIGHT, val);
1633
1634 val = wm8903_read(codec, WM8903_ANALOGUE_OUT2_LEFT);
1635 val |= WM8903_LINEOUTVU;
1636 wm8903_write(codec, WM8903_ANALOGUE_OUT2_LEFT, val);
1637 wm8903_write(codec, WM8903_ANALOGUE_OUT2_RIGHT, val);
1638
1639 val = wm8903_read(codec, WM8903_ANALOGUE_OUT3_LEFT);
1640 val |= WM8903_SPKVU;
1641 wm8903_write(codec, WM8903_ANALOGUE_OUT3_LEFT, val);
1642 wm8903_write(codec, WM8903_ANALOGUE_OUT3_RIGHT, val);
1643
1644 /* Enable DAC soft mute by default */
1645 val = wm8903_read(codec, WM8903_DAC_DIGITAL_1);
1646 val |= WM8903_DAC_MUTEMODE;
1647 wm8903_write(codec, WM8903_DAC_DIGITAL_1, val);
1648
1649 wm8903_dai.dev = &i2c->dev;
1650 wm8903_codec = codec;
1651
1652 ret = snd_soc_register_codec(codec);
1653 if (ret != 0) {
1654 dev_err(&i2c->dev, "Failed to register codec: %d\n", ret);
1655 goto err;
1656 }
1657
1658 ret = snd_soc_register_dai(&wm8903_dai);
1659 if (ret != 0) {
1660 dev_err(&i2c->dev, "Failed to register DAI: %d\n", ret);
1661 goto err_codec;
1662 }
1663
1664 return ret;
1665
1666 err_codec:
1667 snd_soc_unregister_codec(codec);
1668 err:
1669 wm8903_codec = NULL;
1670 kfree(wm8903);
1671 return ret;
1672 }
1673
1674 static __devexit int wm8903_i2c_remove(struct i2c_client *client)
1675 {
1676 struct snd_soc_codec *codec = i2c_get_clientdata(client);
1677
1678 snd_soc_unregister_dai(&wm8903_dai);
1679 snd_soc_unregister_codec(codec);
1680
1681 wm8903_set_bias_level(codec, SND_SOC_BIAS_OFF);
1682
1683 kfree(codec->private_data);
1684
1685 wm8903_codec = NULL;
1686 wm8903_dai.dev = NULL;
1687
1688 return 0;
1689 }
1690
1691 /* i2c codec control layer */
1692 static const struct i2c_device_id wm8903_i2c_id[] = {
1693 { "wm8903", 0 },
1694 { }
1695 };
1696 MODULE_DEVICE_TABLE(i2c, wm8903_i2c_id);
1697
1698 static struct i2c_driver wm8903_i2c_driver = {
1699 .driver = {
1700 .name = "WM8903",
1701 .owner = THIS_MODULE,
1702 },
1703 .probe = wm8903_i2c_probe,
1704 .remove = __devexit_p(wm8903_i2c_remove),
1705 .id_table = wm8903_i2c_id,
1706 };
1707
1708 static int wm8903_probe(struct platform_device *pdev)
1709 {
1710 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1711 int ret = 0;
1712
1713 if (!wm8903_codec) {
1714 dev_err(&pdev->dev, "I2C device not yet probed\n");
1715 goto err;
1716 }
1717
1718 socdev->card->codec = wm8903_codec;
1719
1720 /* register pcms */
1721 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1722 if (ret < 0) {
1723 dev_err(&pdev->dev, "failed to create pcms\n");
1724 goto err;
1725 }
1726
1727 snd_soc_add_controls(socdev->card->codec, wm8903_snd_controls,
1728 ARRAY_SIZE(wm8903_snd_controls));
1729 wm8903_add_widgets(socdev->card->codec);
1730
1731 ret = snd_soc_init_card(socdev);
1732 if (ret < 0) {
1733 dev_err(&pdev->dev, "wm8903: failed to register card\n");
1734 goto card_err;
1735 }
1736
1737 return ret;
1738
1739 card_err:
1740 snd_soc_free_pcms(socdev);
1741 snd_soc_dapm_free(socdev);
1742 err:
1743 return ret;
1744 }
1745
1746 /* power down chip */
1747 static int wm8903_remove(struct platform_device *pdev)
1748 {
1749 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1750 struct snd_soc_codec *codec = socdev->card->codec;
1751
1752 if (codec->control_data)
1753 wm8903_set_bias_level(codec, SND_SOC_BIAS_OFF);
1754
1755 snd_soc_free_pcms(socdev);
1756 snd_soc_dapm_free(socdev);
1757
1758 return 0;
1759 }
1760
1761 struct snd_soc_codec_device soc_codec_dev_wm8903 = {
1762 .probe = wm8903_probe,
1763 .remove = wm8903_remove,
1764 .suspend = wm8903_suspend,
1765 .resume = wm8903_resume,
1766 };
1767 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8903);
1768
1769 static int __init wm8903_modinit(void)
1770 {
1771 return i2c_add_driver(&wm8903_i2c_driver);
1772 }
1773 module_init(wm8903_modinit);
1774
1775 static void __exit wm8903_exit(void)
1776 {
1777 i2c_del_driver(&wm8903_i2c_driver);
1778 }
1779 module_exit(wm8903_exit);
1780
1781 MODULE_DESCRIPTION("ASoC WM8903 driver");
1782 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.cm>");
1783 MODULE_LICENSE("GPL");
(deprecated) Btrfs devel tree