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Merge branch 'for-next' of git://android.git.kernel.org/kernel/tegra
[deliverable/linux.git] / sound / soc / codecs / wm8903.c
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 * - Digital microphone support.
15 */
16
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/init.h>
20 #include <linux/completion.h>
21 #include <linux/delay.h>
22 #include <linux/pm.h>
23 #include <linux/i2c.h>
24 #include <linux/platform_device.h>
25 #include <linux/slab.h>
26 #include <sound/core.h>
27 #include <sound/jack.h>
28 #include <sound/pcm.h>
29 #include <sound/pcm_params.h>
30 #include <sound/tlv.h>
31 #include <sound/soc.h>
32 #include <sound/soc-dapm.h>
33 #include <sound/initval.h>
34 #include <sound/wm8903.h>
35
36 #include "wm8903.h"
37
38 /* Register defaults at reset */
39 static u16 wm8903_reg_defaults[] = {
40 0x8903, /* R0 - SW Reset and ID */
41 0x0000, /* R1 - Revision Number */
42 0x0000, /* R2 */
43 0x0000, /* R3 */
44 0x0018, /* R4 - Bias Control 0 */
45 0x0000, /* R5 - VMID Control 0 */
46 0x0000, /* R6 - Mic Bias Control 0 */
47 0x0000, /* R7 */
48 0x0001, /* R8 - Analogue DAC 0 */
49 0x0000, /* R9 */
50 0x0001, /* R10 - Analogue ADC 0 */
51 0x0000, /* R11 */
52 0x0000, /* R12 - Power Management 0 */
53 0x0000, /* R13 - Power Management 1 */
54 0x0000, /* R14 - Power Management 2 */
55 0x0000, /* R15 - Power Management 3 */
56 0x0000, /* R16 - Power Management 4 */
57 0x0000, /* R17 - Power Management 5 */
58 0x0000, /* R18 - Power Management 6 */
59 0x0000, /* R19 */
60 0x0400, /* R20 - Clock Rates 0 */
61 0x0D07, /* R21 - Clock Rates 1 */
62 0x0000, /* R22 - Clock Rates 2 */
63 0x0000, /* R23 */
64 0x0050, /* R24 - Audio Interface 0 */
65 0x0242, /* R25 - Audio Interface 1 */
66 0x0008, /* R26 - Audio Interface 2 */
67 0x0022, /* R27 - Audio Interface 3 */
68 0x0000, /* R28 */
69 0x0000, /* R29 */
70 0x00C0, /* R30 - DAC Digital Volume Left */
71 0x00C0, /* R31 - DAC Digital Volume Right */
72 0x0000, /* R32 - DAC Digital 0 */
73 0x0000, /* R33 - DAC Digital 1 */
74 0x0000, /* R34 */
75 0x0000, /* R35 */
76 0x00C0, /* R36 - ADC Digital Volume Left */
77 0x00C0, /* R37 - ADC Digital Volume Right */
78 0x0000, /* R38 - ADC Digital 0 */
79 0x0073, /* R39 - Digital Microphone 0 */
80 0x09BF, /* R40 - DRC 0 */
81 0x3241, /* R41 - DRC 1 */
82 0x0020, /* R42 - DRC 2 */
83 0x0000, /* R43 - DRC 3 */
84 0x0085, /* R44 - Analogue Left Input 0 */
85 0x0085, /* R45 - Analogue Right Input 0 */
86 0x0044, /* R46 - Analogue Left Input 1 */
87 0x0044, /* R47 - Analogue Right Input 1 */
88 0x0000, /* R48 */
89 0x0000, /* R49 */
90 0x0008, /* R50 - Analogue Left Mix 0 */
91 0x0004, /* R51 - Analogue Right Mix 0 */
92 0x0000, /* R52 - Analogue Spk Mix Left 0 */
93 0x0000, /* R53 - Analogue Spk Mix Left 1 */
94 0x0000, /* R54 - Analogue Spk Mix Right 0 */
95 0x0000, /* R55 - Analogue Spk Mix Right 1 */
96 0x0000, /* R56 */
97 0x002D, /* R57 - Analogue OUT1 Left */
98 0x002D, /* R58 - Analogue OUT1 Right */
99 0x0039, /* R59 - Analogue OUT2 Left */
100 0x0039, /* R60 - Analogue OUT2 Right */
101 0x0100, /* R61 */
102 0x0139, /* R62 - Analogue OUT3 Left */
103 0x0139, /* R63 - Analogue OUT3 Right */
104 0x0000, /* R64 */
105 0x0000, /* R65 - Analogue SPK Output Control 0 */
106 0x0000, /* R66 */
107 0x0010, /* R67 - DC Servo 0 */
108 0x0100, /* R68 */
109 0x00A4, /* R69 - DC Servo 2 */
110 0x0807, /* R70 */
111 0x0000, /* R71 */
112 0x0000, /* R72 */
113 0x0000, /* R73 */
114 0x0000, /* R74 */
115 0x0000, /* R75 */
116 0x0000, /* R76 */
117 0x0000, /* R77 */
118 0x0000, /* R78 */
119 0x000E, /* R79 */
120 0x0000, /* R80 */
121 0x0000, /* R81 */
122 0x0000, /* R82 */
123 0x0000, /* R83 */
124 0x0000, /* R84 */
125 0x0000, /* R85 */
126 0x0000, /* R86 */
127 0x0006, /* R87 */
128 0x0000, /* R88 */
129 0x0000, /* R89 */
130 0x0000, /* R90 - Analogue HP 0 */
131 0x0060, /* R91 */
132 0x0000, /* R92 */
133 0x0000, /* R93 */
134 0x0000, /* R94 - Analogue Lineout 0 */
135 0x0060, /* R95 */
136 0x0000, /* R96 */
137 0x0000, /* R97 */
138 0x0000, /* R98 - Charge Pump 0 */
139 0x1F25, /* R99 */
140 0x2B19, /* R100 */
141 0x01C0, /* R101 */
142 0x01EF, /* R102 */
143 0x2B00, /* R103 */
144 0x0000, /* R104 - Class W 0 */
145 0x01C0, /* R105 */
146 0x1C10, /* R106 */
147 0x0000, /* R107 */
148 0x0000, /* R108 - Write Sequencer 0 */
149 0x0000, /* R109 - Write Sequencer 1 */
150 0x0000, /* R110 - Write Sequencer 2 */
151 0x0000, /* R111 - Write Sequencer 3 */
152 0x0000, /* R112 - Write Sequencer 4 */
153 0x0000, /* R113 */
154 0x0000, /* R114 - Control Interface */
155 0x0000, /* R115 */
156 0x00A8, /* R116 - GPIO Control 1 */
157 0x00A8, /* R117 - GPIO Control 2 */
158 0x00A8, /* R118 - GPIO Control 3 */
159 0x0220, /* R119 - GPIO Control 4 */
160 0x01A0, /* R120 - GPIO Control 5 */
161 0x0000, /* R121 - Interrupt Status 1 */
162 0xFFFF, /* R122 - Interrupt Status 1 Mask */
163 0x0000, /* R123 - Interrupt Polarity 1 */
164 0x0000, /* R124 */
165 0x0003, /* R125 */
166 0x0000, /* R126 - Interrupt Control */
167 0x0000, /* R127 */
168 0x0005, /* R128 */
169 0x0000, /* R129 - Control Interface Test 1 */
170 0x0000, /* R130 */
171 0x0000, /* R131 */
172 0x0000, /* R132 */
173 0x0000, /* R133 */
174 0x0000, /* R134 */
175 0x03FF, /* R135 */
176 0x0007, /* R136 */
177 0x0040, /* R137 */
178 0x0000, /* R138 */
179 0x0000, /* R139 */
180 0x0000, /* R140 */
181 0x0000, /* R141 */
182 0x0000, /* R142 */
183 0x0000, /* R143 */
184 0x0000, /* R144 */
185 0x0000, /* R145 */
186 0x0000, /* R146 */
187 0x0000, /* R147 */
188 0x4000, /* R148 */
189 0x6810, /* R149 - Charge Pump Test 1 */
190 0x0004, /* R150 */
191 0x0000, /* R151 */
192 0x0000, /* R152 */
193 0x0000, /* R153 */
194 0x0000, /* R154 */
195 0x0000, /* R155 */
196 0x0000, /* R156 */
197 0x0000, /* R157 */
198 0x0000, /* R158 */
199 0x0000, /* R159 */
200 0x0000, /* R160 */
201 0x0000, /* R161 */
202 0x0000, /* R162 */
203 0x0000, /* R163 */
204 0x0028, /* R164 - Clock Rate Test 4 */
205 0x0004, /* R165 */
206 0x0000, /* R166 */
207 0x0060, /* R167 */
208 0x0000, /* R168 */
209 0x0000, /* R169 */
210 0x0000, /* R170 */
211 0x0000, /* R171 */
212 0x0000, /* R172 - Analogue Output Bias 0 */
213 };
214
215 struct wm8903_priv {
216
217 u16 reg_cache[ARRAY_SIZE(wm8903_reg_defaults)];
218
219 int sysclk;
220 int irq;
221
222 /* Reference counts */
223 int class_w_users;
224 int playback_active;
225 int capture_active;
226
227 struct completion wseq;
228
229 struct snd_soc_jack *mic_jack;
230 int mic_det;
231 int mic_short;
232 int mic_last_report;
233 int mic_delay;
234
235 struct snd_pcm_substream *master_substream;
236 struct snd_pcm_substream *slave_substream;
237 };
238
239 static int wm8903_volatile_register(unsigned int reg)
240 {
241 switch (reg) {
242 case WM8903_SW_RESET_AND_ID:
243 case WM8903_REVISION_NUMBER:
244 case WM8903_INTERRUPT_STATUS_1:
245 case WM8903_WRITE_SEQUENCER_4:
246 return 1;
247
248 default:
249 return 0;
250 }
251 }
252
253 static int wm8903_run_sequence(struct snd_soc_codec *codec, unsigned int start)
254 {
255 u16 reg[5];
256 struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
257
258 BUG_ON(start > 48);
259
260 /* Enable the sequencer if it's not already on */
261 reg[0] = snd_soc_read(codec, WM8903_WRITE_SEQUENCER_0);
262 snd_soc_write(codec, WM8903_WRITE_SEQUENCER_0,
263 reg[0] | WM8903_WSEQ_ENA);
264
265 dev_dbg(codec->dev, "Starting sequence at %d\n", start);
266
267 snd_soc_write(codec, WM8903_WRITE_SEQUENCER_3,
268 start | WM8903_WSEQ_START);
269
270 /* Wait for it to complete. If we have the interrupt wired up then
271 * that will break us out of the poll early.
272 */
273 do {
274 wait_for_completion_timeout(&wm8903->wseq,
275 msecs_to_jiffies(10));
276
277 reg[4] = snd_soc_read(codec, WM8903_WRITE_SEQUENCER_4);
278 } while (reg[4] & WM8903_WSEQ_BUSY);
279
280 dev_dbg(codec->dev, "Sequence complete\n");
281
282 /* Disable the sequencer again if we enabled it */
283 snd_soc_write(codec, WM8903_WRITE_SEQUENCER_0, reg[0]);
284
285 return 0;
286 }
287
288 static void wm8903_sync_reg_cache(struct snd_soc_codec *codec, u16 *cache)
289 {
290 int i;
291
292 /* There really ought to be something better we can do here :/ */
293 for (i = 0; i < ARRAY_SIZE(wm8903_reg_defaults); i++)
294 cache[i] = codec->hw_read(codec, i);
295 }
296
297 static void wm8903_reset(struct snd_soc_codec *codec)
298 {
299 snd_soc_write(codec, WM8903_SW_RESET_AND_ID, 0);
300 memcpy(codec->reg_cache, wm8903_reg_defaults,
301 sizeof(wm8903_reg_defaults));
302 }
303
304 #define WM8903_OUTPUT_SHORT 0x8
305 #define WM8903_OUTPUT_OUT 0x4
306 #define WM8903_OUTPUT_INT 0x2
307 #define WM8903_OUTPUT_IN 0x1
308
309 static int wm8903_cp_event(struct snd_soc_dapm_widget *w,
310 struct snd_kcontrol *kcontrol, int event)
311 {
312 WARN_ON(event != SND_SOC_DAPM_POST_PMU);
313 mdelay(4);
314
315 return 0;
316 }
317
318 /*
319 * Event for headphone and line out amplifier power changes. Special
320 * power up/down sequences are required in order to maximise pop/click
321 * performance.
322 */
323 static int wm8903_output_event(struct snd_soc_dapm_widget *w,
324 struct snd_kcontrol *kcontrol, int event)
325 {
326 struct snd_soc_codec *codec = w->codec;
327 u16 val;
328 u16 reg;
329 u16 dcs_reg;
330 u16 dcs_bit;
331 int shift;
332
333 switch (w->reg) {
334 case WM8903_POWER_MANAGEMENT_2:
335 reg = WM8903_ANALOGUE_HP_0;
336 dcs_bit = 0 + w->shift;
337 break;
338 case WM8903_POWER_MANAGEMENT_3:
339 reg = WM8903_ANALOGUE_LINEOUT_0;
340 dcs_bit = 2 + w->shift;
341 break;
342 default:
343 BUG();
344 return -EINVAL; /* Spurious warning from some compilers */
345 }
346
347 switch (w->shift) {
348 case 0:
349 shift = 0;
350 break;
351 case 1:
352 shift = 4;
353 break;
354 default:
355 BUG();
356 return -EINVAL; /* Spurious warning from some compilers */
357 }
358
359 if (event & SND_SOC_DAPM_PRE_PMU) {
360 val = snd_soc_read(codec, reg);
361
362 /* Short the output */
363 val &= ~(WM8903_OUTPUT_SHORT << shift);
364 snd_soc_write(codec, reg, val);
365 }
366
367 if (event & SND_SOC_DAPM_POST_PMU) {
368 val = snd_soc_read(codec, reg);
369
370 val |= (WM8903_OUTPUT_IN << shift);
371 snd_soc_write(codec, reg, val);
372
373 val |= (WM8903_OUTPUT_INT << shift);
374 snd_soc_write(codec, reg, val);
375
376 /* Turn on the output ENA_OUTP */
377 val |= (WM8903_OUTPUT_OUT << shift);
378 snd_soc_write(codec, reg, val);
379
380 /* Enable the DC servo */
381 dcs_reg = snd_soc_read(codec, WM8903_DC_SERVO_0);
382 dcs_reg |= dcs_bit;
383 snd_soc_write(codec, WM8903_DC_SERVO_0, dcs_reg);
384
385 /* Remove the short */
386 val |= (WM8903_OUTPUT_SHORT << shift);
387 snd_soc_write(codec, reg, val);
388 }
389
390 if (event & SND_SOC_DAPM_PRE_PMD) {
391 val = snd_soc_read(codec, reg);
392
393 /* Short the output */
394 val &= ~(WM8903_OUTPUT_SHORT << shift);
395 snd_soc_write(codec, reg, val);
396
397 /* Disable the DC servo */
398 dcs_reg = snd_soc_read(codec, WM8903_DC_SERVO_0);
399 dcs_reg &= ~dcs_bit;
400 snd_soc_write(codec, WM8903_DC_SERVO_0, dcs_reg);
401
402 /* Then disable the intermediate and output stages */
403 val &= ~((WM8903_OUTPUT_OUT | WM8903_OUTPUT_INT |
404 WM8903_OUTPUT_IN) << shift);
405 snd_soc_write(codec, reg, val);
406 }
407
408 return 0;
409 }
410
411 /*
412 * When used with DAC outputs only the WM8903 charge pump supports
413 * operation in class W mode, providing very low power consumption
414 * when used with digital sources. Enable and disable this mode
415 * automatically depending on the mixer configuration.
416 *
417 * All the relevant controls are simple switches.
418 */
419 static int wm8903_class_w_put(struct snd_kcontrol *kcontrol,
420 struct snd_ctl_elem_value *ucontrol)
421 {
422 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
423 struct snd_soc_codec *codec = widget->codec;
424 struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
425 u16 reg;
426 int ret;
427
428 reg = snd_soc_read(codec, WM8903_CLASS_W_0);
429
430 /* Turn it off if we're about to enable bypass */
431 if (ucontrol->value.integer.value[0]) {
432 if (wm8903->class_w_users == 0) {
433 dev_dbg(codec->dev, "Disabling Class W\n");
434 snd_soc_write(codec, WM8903_CLASS_W_0, reg &
435 ~(WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V));
436 }
437 wm8903->class_w_users++;
438 }
439
440 /* Implement the change */
441 ret = snd_soc_dapm_put_volsw(kcontrol, ucontrol);
442
443 /* If we've just disabled the last bypass path turn Class W on */
444 if (!ucontrol->value.integer.value[0]) {
445 if (wm8903->class_w_users == 1) {
446 dev_dbg(codec->dev, "Enabling Class W\n");
447 snd_soc_write(codec, WM8903_CLASS_W_0, reg |
448 WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V);
449 }
450 wm8903->class_w_users--;
451 }
452
453 dev_dbg(codec->dev, "Bypass use count now %d\n",
454 wm8903->class_w_users);
455
456 return ret;
457 }
458
459 #define SOC_DAPM_SINGLE_W(xname, reg, shift, max, invert) \
460 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
461 .info = snd_soc_info_volsw, \
462 .get = snd_soc_dapm_get_volsw, .put = wm8903_class_w_put, \
463 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
464
465
466 /* ALSA can only do steps of .01dB */
467 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
468
469 static const DECLARE_TLV_DB_SCALE(digital_sidetone_tlv, -3600, 300, 0);
470 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
471
472 static const DECLARE_TLV_DB_SCALE(drc_tlv_thresh, 0, 75, 0);
473 static const DECLARE_TLV_DB_SCALE(drc_tlv_amp, -2250, 75, 0);
474 static const DECLARE_TLV_DB_SCALE(drc_tlv_min, 0, 600, 0);
475 static const DECLARE_TLV_DB_SCALE(drc_tlv_max, 1200, 600, 0);
476 static const DECLARE_TLV_DB_SCALE(drc_tlv_startup, -300, 50, 0);
477
478 static const char *drc_slope_text[] = {
479 "1", "1/2", "1/4", "1/8", "1/16", "0"
480 };
481
482 static const struct soc_enum drc_slope_r0 =
483 SOC_ENUM_SINGLE(WM8903_DRC_2, 3, 6, drc_slope_text);
484
485 static const struct soc_enum drc_slope_r1 =
486 SOC_ENUM_SINGLE(WM8903_DRC_2, 0, 6, drc_slope_text);
487
488 static const char *drc_attack_text[] = {
489 "instantaneous",
490 "363us", "762us", "1.45ms", "2.9ms", "5.8ms", "11.6ms", "23.2ms",
491 "46.4ms", "92.8ms", "185.6ms"
492 };
493
494 static const struct soc_enum drc_attack =
495 SOC_ENUM_SINGLE(WM8903_DRC_1, 12, 11, drc_attack_text);
496
497 static const char *drc_decay_text[] = {
498 "186ms", "372ms", "743ms", "1.49s", "2.97s", "5.94s", "11.89s",
499 "23.87s", "47.56s"
500 };
501
502 static const struct soc_enum drc_decay =
503 SOC_ENUM_SINGLE(WM8903_DRC_1, 8, 9, drc_decay_text);
504
505 static const char *drc_ff_delay_text[] = {
506 "5 samples", "9 samples"
507 };
508
509 static const struct soc_enum drc_ff_delay =
510 SOC_ENUM_SINGLE(WM8903_DRC_0, 5, 2, drc_ff_delay_text);
511
512 static const char *drc_qr_decay_text[] = {
513 "0.725ms", "1.45ms", "5.8ms"
514 };
515
516 static const struct soc_enum drc_qr_decay =
517 SOC_ENUM_SINGLE(WM8903_DRC_1, 4, 3, drc_qr_decay_text);
518
519 static const char *drc_smoothing_text[] = {
520 "Low", "Medium", "High"
521 };
522
523 static const struct soc_enum drc_smoothing =
524 SOC_ENUM_SINGLE(WM8903_DRC_0, 11, 3, drc_smoothing_text);
525
526 static const char *soft_mute_text[] = {
527 "Fast (fs/2)", "Slow (fs/32)"
528 };
529
530 static const struct soc_enum soft_mute =
531 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_1, 10, 2, soft_mute_text);
532
533 static const char *mute_mode_text[] = {
534 "Hard", "Soft"
535 };
536
537 static const struct soc_enum mute_mode =
538 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_1, 9, 2, mute_mode_text);
539
540 static const char *dac_deemphasis_text[] = {
541 "Disabled", "32kHz", "44.1kHz", "48kHz"
542 };
543
544 static const struct soc_enum dac_deemphasis =
545 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_1, 1, 4, dac_deemphasis_text);
546
547 static const char *companding_text[] = {
548 "ulaw", "alaw"
549 };
550
551 static const struct soc_enum dac_companding =
552 SOC_ENUM_SINGLE(WM8903_AUDIO_INTERFACE_0, 0, 2, companding_text);
553
554 static const struct soc_enum adc_companding =
555 SOC_ENUM_SINGLE(WM8903_AUDIO_INTERFACE_0, 2, 2, companding_text);
556
557 static const char *input_mode_text[] = {
558 "Single-Ended", "Differential Line", "Differential Mic"
559 };
560
561 static const struct soc_enum linput_mode_enum =
562 SOC_ENUM_SINGLE(WM8903_ANALOGUE_LEFT_INPUT_1, 0, 3, input_mode_text);
563
564 static const struct soc_enum rinput_mode_enum =
565 SOC_ENUM_SINGLE(WM8903_ANALOGUE_RIGHT_INPUT_1, 0, 3, input_mode_text);
566
567 static const char *linput_mux_text[] = {
568 "IN1L", "IN2L", "IN3L"
569 };
570
571 static const struct soc_enum linput_enum =
572 SOC_ENUM_SINGLE(WM8903_ANALOGUE_LEFT_INPUT_1, 2, 3, linput_mux_text);
573
574 static const struct soc_enum linput_inv_enum =
575 SOC_ENUM_SINGLE(WM8903_ANALOGUE_LEFT_INPUT_1, 4, 3, linput_mux_text);
576
577 static const char *rinput_mux_text[] = {
578 "IN1R", "IN2R", "IN3R"
579 };
580
581 static const struct soc_enum rinput_enum =
582 SOC_ENUM_SINGLE(WM8903_ANALOGUE_RIGHT_INPUT_1, 2, 3, rinput_mux_text);
583
584 static const struct soc_enum rinput_inv_enum =
585 SOC_ENUM_SINGLE(WM8903_ANALOGUE_RIGHT_INPUT_1, 4, 3, rinput_mux_text);
586
587
588 static const char *sidetone_text[] = {
589 "None", "Left", "Right"
590 };
591
592 static const struct soc_enum lsidetone_enum =
593 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_0, 2, 3, sidetone_text);
594
595 static const struct soc_enum rsidetone_enum =
596 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_0, 0, 3, sidetone_text);
597
598 static const struct snd_kcontrol_new wm8903_snd_controls[] = {
599
600 /* Input PGAs - No TLV since the scale depends on PGA mode */
601 SOC_SINGLE("Left Input PGA Switch", WM8903_ANALOGUE_LEFT_INPUT_0,
602 7, 1, 1),
603 SOC_SINGLE("Left Input PGA Volume", WM8903_ANALOGUE_LEFT_INPUT_0,
604 0, 31, 0),
605 SOC_SINGLE("Left Input PGA Common Mode Switch", WM8903_ANALOGUE_LEFT_INPUT_1,
606 6, 1, 0),
607
608 SOC_SINGLE("Right Input PGA Switch", WM8903_ANALOGUE_RIGHT_INPUT_0,
609 7, 1, 1),
610 SOC_SINGLE("Right Input PGA Volume", WM8903_ANALOGUE_RIGHT_INPUT_0,
611 0, 31, 0),
612 SOC_SINGLE("Right Input PGA Common Mode Switch", WM8903_ANALOGUE_RIGHT_INPUT_1,
613 6, 1, 0),
614
615 /* ADCs */
616 SOC_SINGLE("DRC Switch", WM8903_DRC_0, 15, 1, 0),
617 SOC_ENUM("DRC Compressor Slope R0", drc_slope_r0),
618 SOC_ENUM("DRC Compressor Slope R1", drc_slope_r1),
619 SOC_SINGLE_TLV("DRC Compressor Threshold Volume", WM8903_DRC_3, 5, 124, 1,
620 drc_tlv_thresh),
621 SOC_SINGLE_TLV("DRC Volume", WM8903_DRC_3, 0, 30, 1, drc_tlv_amp),
622 SOC_SINGLE_TLV("DRC Minimum Gain Volume", WM8903_DRC_1, 2, 3, 1, drc_tlv_min),
623 SOC_SINGLE_TLV("DRC Maximum Gain Volume", WM8903_DRC_1, 0, 3, 0, drc_tlv_max),
624 SOC_ENUM("DRC Attack Rate", drc_attack),
625 SOC_ENUM("DRC Decay Rate", drc_decay),
626 SOC_ENUM("DRC FF Delay", drc_ff_delay),
627 SOC_SINGLE("DRC Anticlip Switch", WM8903_DRC_0, 1, 1, 0),
628 SOC_SINGLE("DRC QR Switch", WM8903_DRC_0, 2, 1, 0),
629 SOC_SINGLE_TLV("DRC QR Threshold Volume", WM8903_DRC_0, 6, 3, 0, drc_tlv_max),
630 SOC_ENUM("DRC QR Decay Rate", drc_qr_decay),
631 SOC_SINGLE("DRC Smoothing Switch", WM8903_DRC_0, 3, 1, 0),
632 SOC_SINGLE("DRC Smoothing Hysteresis Switch", WM8903_DRC_0, 0, 1, 0),
633 SOC_ENUM("DRC Smoothing Threshold", drc_smoothing),
634 SOC_SINGLE_TLV("DRC Startup Volume", WM8903_DRC_0, 6, 18, 0, drc_tlv_startup),
635
636 SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8903_ADC_DIGITAL_VOLUME_LEFT,
637 WM8903_ADC_DIGITAL_VOLUME_RIGHT, 1, 96, 0, digital_tlv),
638 SOC_ENUM("ADC Companding Mode", adc_companding),
639 SOC_SINGLE("ADC Companding Switch", WM8903_AUDIO_INTERFACE_0, 3, 1, 0),
640
641 SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8903_DAC_DIGITAL_0, 4, 8,
642 12, 0, digital_sidetone_tlv),
643
644 /* DAC */
645 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8903_DAC_DIGITAL_VOLUME_LEFT,
646 WM8903_DAC_DIGITAL_VOLUME_RIGHT, 1, 120, 0, digital_tlv),
647 SOC_ENUM("DAC Soft Mute Rate", soft_mute),
648 SOC_ENUM("DAC Mute Mode", mute_mode),
649 SOC_SINGLE("DAC Mono Switch", WM8903_DAC_DIGITAL_1, 12, 1, 0),
650 SOC_ENUM("DAC De-emphasis", dac_deemphasis),
651 SOC_ENUM("DAC Companding Mode", dac_companding),
652 SOC_SINGLE("DAC Companding Switch", WM8903_AUDIO_INTERFACE_0, 1, 1, 0),
653
654 /* Headphones */
655 SOC_DOUBLE_R("Headphone Switch",
656 WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
657 8, 1, 1),
658 SOC_DOUBLE_R("Headphone ZC Switch",
659 WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
660 6, 1, 0),
661 SOC_DOUBLE_R_TLV("Headphone Volume",
662 WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
663 0, 63, 0, out_tlv),
664
665 /* Line out */
666 SOC_DOUBLE_R("Line Out Switch",
667 WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
668 8, 1, 1),
669 SOC_DOUBLE_R("Line Out ZC Switch",
670 WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
671 6, 1, 0),
672 SOC_DOUBLE_R_TLV("Line Out Volume",
673 WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
674 0, 63, 0, out_tlv),
675
676 /* Speaker */
677 SOC_DOUBLE_R("Speaker Switch",
678 WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT, 8, 1, 1),
679 SOC_DOUBLE_R("Speaker ZC Switch",
680 WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT, 6, 1, 0),
681 SOC_DOUBLE_R_TLV("Speaker Volume",
682 WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT,
683 0, 63, 0, out_tlv),
684 };
685
686 static const struct snd_kcontrol_new linput_mode_mux =
687 SOC_DAPM_ENUM("Left Input Mode Mux", linput_mode_enum);
688
689 static const struct snd_kcontrol_new rinput_mode_mux =
690 SOC_DAPM_ENUM("Right Input Mode Mux", rinput_mode_enum);
691
692 static const struct snd_kcontrol_new linput_mux =
693 SOC_DAPM_ENUM("Left Input Mux", linput_enum);
694
695 static const struct snd_kcontrol_new linput_inv_mux =
696 SOC_DAPM_ENUM("Left Inverting Input Mux", linput_inv_enum);
697
698 static const struct snd_kcontrol_new rinput_mux =
699 SOC_DAPM_ENUM("Right Input Mux", rinput_enum);
700
701 static const struct snd_kcontrol_new rinput_inv_mux =
702 SOC_DAPM_ENUM("Right Inverting Input Mux", rinput_inv_enum);
703
704 static const struct snd_kcontrol_new lsidetone_mux =
705 SOC_DAPM_ENUM("DACL Sidetone Mux", lsidetone_enum);
706
707 static const struct snd_kcontrol_new rsidetone_mux =
708 SOC_DAPM_ENUM("DACR Sidetone Mux", rsidetone_enum);
709
710 static const struct snd_kcontrol_new left_output_mixer[] = {
711 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_LEFT_MIX_0, 3, 1, 0),
712 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_LEFT_MIX_0, 2, 1, 0),
713 SOC_DAPM_SINGLE_W("Left Bypass Switch", WM8903_ANALOGUE_LEFT_MIX_0, 1, 1, 0),
714 SOC_DAPM_SINGLE_W("Right Bypass Switch", WM8903_ANALOGUE_LEFT_MIX_0, 0, 1, 0),
715 };
716
717 static const struct snd_kcontrol_new right_output_mixer[] = {
718 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 3, 1, 0),
719 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 2, 1, 0),
720 SOC_DAPM_SINGLE_W("Left Bypass Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 1, 1, 0),
721 SOC_DAPM_SINGLE_W("Right Bypass Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 0, 1, 0),
722 };
723
724 static const struct snd_kcontrol_new left_speaker_mixer[] = {
725 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 3, 1, 0),
726 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 2, 1, 0),
727 SOC_DAPM_SINGLE("Left Bypass Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 1, 1, 0),
728 SOC_DAPM_SINGLE("Right Bypass Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0,
729 0, 1, 0),
730 };
731
732 static const struct snd_kcontrol_new right_speaker_mixer[] = {
733 SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0, 3, 1, 0),
734 SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0, 2, 1, 0),
735 SOC_DAPM_SINGLE("Left Bypass Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0,
736 1, 1, 0),
737 SOC_DAPM_SINGLE("Right Bypass Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0,
738 0, 1, 0),
739 };
740
741 static const struct snd_soc_dapm_widget wm8903_dapm_widgets[] = {
742 SND_SOC_DAPM_INPUT("IN1L"),
743 SND_SOC_DAPM_INPUT("IN1R"),
744 SND_SOC_DAPM_INPUT("IN2L"),
745 SND_SOC_DAPM_INPUT("IN2R"),
746 SND_SOC_DAPM_INPUT("IN3L"),
747 SND_SOC_DAPM_INPUT("IN3R"),
748
749 SND_SOC_DAPM_OUTPUT("HPOUTL"),
750 SND_SOC_DAPM_OUTPUT("HPOUTR"),
751 SND_SOC_DAPM_OUTPUT("LINEOUTL"),
752 SND_SOC_DAPM_OUTPUT("LINEOUTR"),
753 SND_SOC_DAPM_OUTPUT("LOP"),
754 SND_SOC_DAPM_OUTPUT("LON"),
755 SND_SOC_DAPM_OUTPUT("ROP"),
756 SND_SOC_DAPM_OUTPUT("RON"),
757
758 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8903_MIC_BIAS_CONTROL_0, 0, 0),
759
760 SND_SOC_DAPM_MUX("Left Input Mux", SND_SOC_NOPM, 0, 0, &linput_mux),
761 SND_SOC_DAPM_MUX("Left Input Inverting Mux", SND_SOC_NOPM, 0, 0,
762 &linput_inv_mux),
763 SND_SOC_DAPM_MUX("Left Input Mode Mux", SND_SOC_NOPM, 0, 0, &linput_mode_mux),
764
765 SND_SOC_DAPM_MUX("Right Input Mux", SND_SOC_NOPM, 0, 0, &rinput_mux),
766 SND_SOC_DAPM_MUX("Right Input Inverting Mux", SND_SOC_NOPM, 0, 0,
767 &rinput_inv_mux),
768 SND_SOC_DAPM_MUX("Right Input Mode Mux", SND_SOC_NOPM, 0, 0, &rinput_mode_mux),
769
770 SND_SOC_DAPM_PGA("Left Input PGA", WM8903_POWER_MANAGEMENT_0, 1, 0, NULL, 0),
771 SND_SOC_DAPM_PGA("Right Input PGA", WM8903_POWER_MANAGEMENT_0, 0, 0, NULL, 0),
772
773 SND_SOC_DAPM_ADC("ADCL", "Left HiFi Capture", WM8903_POWER_MANAGEMENT_6, 1, 0),
774 SND_SOC_DAPM_ADC("ADCR", "Right HiFi Capture", WM8903_POWER_MANAGEMENT_6, 0, 0),
775
776 SND_SOC_DAPM_MUX("DACL Sidetone", SND_SOC_NOPM, 0, 0, &lsidetone_mux),
777 SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &rsidetone_mux),
778
779 SND_SOC_DAPM_DAC("DACL", "Left Playback", WM8903_POWER_MANAGEMENT_6, 3, 0),
780 SND_SOC_DAPM_DAC("DACR", "Right Playback", WM8903_POWER_MANAGEMENT_6, 2, 0),
781
782 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8903_POWER_MANAGEMENT_1, 1, 0,
783 left_output_mixer, ARRAY_SIZE(left_output_mixer)),
784 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8903_POWER_MANAGEMENT_1, 0, 0,
785 right_output_mixer, ARRAY_SIZE(right_output_mixer)),
786
787 SND_SOC_DAPM_MIXER("Left Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 1, 0,
788 left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
789 SND_SOC_DAPM_MIXER("Right Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 0, 0,
790 right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
791
792 SND_SOC_DAPM_PGA_E("Left Headphone Output PGA", WM8903_POWER_MANAGEMENT_2,
793 1, 0, NULL, 0, wm8903_output_event,
794 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
795 SND_SOC_DAPM_PRE_PMD),
796 SND_SOC_DAPM_PGA_E("Right Headphone Output PGA", WM8903_POWER_MANAGEMENT_2,
797 0, 0, NULL, 0, wm8903_output_event,
798 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
799 SND_SOC_DAPM_PRE_PMD),
800
801 SND_SOC_DAPM_PGA_E("Left Line Output PGA", WM8903_POWER_MANAGEMENT_3, 1, 0,
802 NULL, 0, wm8903_output_event,
803 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
804 SND_SOC_DAPM_PRE_PMD),
805 SND_SOC_DAPM_PGA_E("Right Line Output PGA", WM8903_POWER_MANAGEMENT_3, 0, 0,
806 NULL, 0, wm8903_output_event,
807 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
808 SND_SOC_DAPM_PRE_PMD),
809
810 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8903_POWER_MANAGEMENT_5, 1, 0,
811 NULL, 0),
812 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8903_POWER_MANAGEMENT_5, 0, 0,
813 NULL, 0),
814
815 SND_SOC_DAPM_SUPPLY("Charge Pump", WM8903_CHARGE_PUMP_0, 0, 0,
816 wm8903_cp_event, SND_SOC_DAPM_POST_PMU),
817 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8903_CLOCK_RATES_2, 1, 0, NULL, 0),
818 };
819
820 static const struct snd_soc_dapm_route intercon[] = {
821
822 { "Left Input Mux", "IN1L", "IN1L" },
823 { "Left Input Mux", "IN2L", "IN2L" },
824 { "Left Input Mux", "IN3L", "IN3L" },
825
826 { "Left Input Inverting Mux", "IN1L", "IN1L" },
827 { "Left Input Inverting Mux", "IN2L", "IN2L" },
828 { "Left Input Inverting Mux", "IN3L", "IN3L" },
829
830 { "Right Input Mux", "IN1R", "IN1R" },
831 { "Right Input Mux", "IN2R", "IN2R" },
832 { "Right Input Mux", "IN3R", "IN3R" },
833
834 { "Right Input Inverting Mux", "IN1R", "IN1R" },
835 { "Right Input Inverting Mux", "IN2R", "IN2R" },
836 { "Right Input Inverting Mux", "IN3R", "IN3R" },
837
838 { "Left Input Mode Mux", "Single-Ended", "Left Input Inverting Mux" },
839 { "Left Input Mode Mux", "Differential Line",
840 "Left Input Mux" },
841 { "Left Input Mode Mux", "Differential Line",
842 "Left Input Inverting Mux" },
843 { "Left Input Mode Mux", "Differential Mic",
844 "Left Input Mux" },
845 { "Left Input Mode Mux", "Differential Mic",
846 "Left Input Inverting Mux" },
847
848 { "Right Input Mode Mux", "Single-Ended",
849 "Right Input Inverting Mux" },
850 { "Right Input Mode Mux", "Differential Line",
851 "Right Input Mux" },
852 { "Right Input Mode Mux", "Differential Line",
853 "Right Input Inverting Mux" },
854 { "Right Input Mode Mux", "Differential Mic",
855 "Right Input Mux" },
856 { "Right Input Mode Mux", "Differential Mic",
857 "Right Input Inverting Mux" },
858
859 { "Left Input PGA", NULL, "Left Input Mode Mux" },
860 { "Right Input PGA", NULL, "Right Input Mode Mux" },
861
862 { "ADCL", NULL, "Left Input PGA" },
863 { "ADCL", NULL, "CLK_DSP" },
864 { "ADCR", NULL, "Right Input PGA" },
865 { "ADCR", NULL, "CLK_DSP" },
866
867 { "DACL Sidetone", "Left", "ADCL" },
868 { "DACL Sidetone", "Right", "ADCR" },
869 { "DACR Sidetone", "Left", "ADCL" },
870 { "DACR Sidetone", "Right", "ADCR" },
871
872 { "DACL", NULL, "DACL Sidetone" },
873 { "DACL", NULL, "CLK_DSP" },
874 { "DACR", NULL, "DACR Sidetone" },
875 { "DACR", NULL, "CLK_DSP" },
876
877 { "Left Output Mixer", "Left Bypass Switch", "Left Input PGA" },
878 { "Left Output Mixer", "Right Bypass Switch", "Right Input PGA" },
879 { "Left Output Mixer", "DACL Switch", "DACL" },
880 { "Left Output Mixer", "DACR Switch", "DACR" },
881
882 { "Right Output Mixer", "Left Bypass Switch", "Left Input PGA" },
883 { "Right Output Mixer", "Right Bypass Switch", "Right Input PGA" },
884 { "Right Output Mixer", "DACL Switch", "DACL" },
885 { "Right Output Mixer", "DACR Switch", "DACR" },
886
887 { "Left Speaker Mixer", "Left Bypass Switch", "Left Input PGA" },
888 { "Left Speaker Mixer", "Right Bypass Switch", "Right Input PGA" },
889 { "Left Speaker Mixer", "DACL Switch", "DACL" },
890 { "Left Speaker Mixer", "DACR Switch", "DACR" },
891
892 { "Right Speaker Mixer", "Left Bypass Switch", "Left Input PGA" },
893 { "Right Speaker Mixer", "Right Bypass Switch", "Right Input PGA" },
894 { "Right Speaker Mixer", "DACL Switch", "DACL" },
895 { "Right Speaker Mixer", "DACR Switch", "DACR" },
896
897 { "Left Line Output PGA", NULL, "Left Output Mixer" },
898 { "Right Line Output PGA", NULL, "Right Output Mixer" },
899
900 { "Left Headphone Output PGA", NULL, "Left Output Mixer" },
901 { "Right Headphone Output PGA", NULL, "Right Output Mixer" },
902
903 { "Left Speaker PGA", NULL, "Left Speaker Mixer" },
904 { "Right Speaker PGA", NULL, "Right Speaker Mixer" },
905
906 { "HPOUTL", NULL, "Left Headphone Output PGA" },
907 { "HPOUTR", NULL, "Right Headphone Output PGA" },
908
909 { "LINEOUTL", NULL, "Left Line Output PGA" },
910 { "LINEOUTR", NULL, "Right Line Output PGA" },
911
912 { "LOP", NULL, "Left Speaker PGA" },
913 { "LON", NULL, "Left Speaker PGA" },
914
915 { "ROP", NULL, "Right Speaker PGA" },
916 { "RON", NULL, "Right Speaker PGA" },
917
918 { "Left Headphone Output PGA", NULL, "Charge Pump" },
919 { "Right Headphone Output PGA", NULL, "Charge Pump" },
920 { "Left Line Output PGA", NULL, "Charge Pump" },
921 { "Right Line Output PGA", NULL, "Charge Pump" },
922 };
923
924 static int wm8903_add_widgets(struct snd_soc_codec *codec)
925 {
926 snd_soc_dapm_new_controls(codec, wm8903_dapm_widgets,
927 ARRAY_SIZE(wm8903_dapm_widgets));
928
929 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
930
931 return 0;
932 }
933
934 static int wm8903_set_bias_level(struct snd_soc_codec *codec,
935 enum snd_soc_bias_level level)
936 {
937 u16 reg, reg2;
938
939 switch (level) {
940 case SND_SOC_BIAS_ON:
941 case SND_SOC_BIAS_PREPARE:
942 reg = snd_soc_read(codec, WM8903_VMID_CONTROL_0);
943 reg &= ~(WM8903_VMID_RES_MASK);
944 reg |= WM8903_VMID_RES_50K;
945 snd_soc_write(codec, WM8903_VMID_CONTROL_0, reg);
946 break;
947
948 case SND_SOC_BIAS_STANDBY:
949 if (codec->bias_level == SND_SOC_BIAS_OFF) {
950 snd_soc_write(codec, WM8903_CLOCK_RATES_2,
951 WM8903_CLK_SYS_ENA);
952
953 /* Change DC servo dither level in startup sequence */
954 snd_soc_write(codec, WM8903_WRITE_SEQUENCER_0, 0x11);
955 snd_soc_write(codec, WM8903_WRITE_SEQUENCER_1, 0x1257);
956 snd_soc_write(codec, WM8903_WRITE_SEQUENCER_2, 0x2);
957
958 wm8903_run_sequence(codec, 0);
959 wm8903_sync_reg_cache(codec, codec->reg_cache);
960
961 /* Enable low impedence charge pump output */
962 reg = snd_soc_read(codec,
963 WM8903_CONTROL_INTERFACE_TEST_1);
964 snd_soc_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
965 reg | WM8903_TEST_KEY);
966 reg2 = snd_soc_read(codec, WM8903_CHARGE_PUMP_TEST_1);
967 snd_soc_write(codec, WM8903_CHARGE_PUMP_TEST_1,
968 reg2 | WM8903_CP_SW_KELVIN_MODE_MASK);
969 snd_soc_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
970 reg);
971
972 /* By default no bypass paths are enabled so
973 * enable Class W support.
974 */
975 dev_dbg(codec->dev, "Enabling Class W\n");
976 snd_soc_write(codec, WM8903_CLASS_W_0, reg |
977 WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V);
978 }
979
980 reg = snd_soc_read(codec, WM8903_VMID_CONTROL_0);
981 reg &= ~(WM8903_VMID_RES_MASK);
982 reg |= WM8903_VMID_RES_250K;
983 snd_soc_write(codec, WM8903_VMID_CONTROL_0, reg);
984 break;
985
986 case SND_SOC_BIAS_OFF:
987 wm8903_run_sequence(codec, 32);
988 reg = snd_soc_read(codec, WM8903_CLOCK_RATES_2);
989 reg &= ~WM8903_CLK_SYS_ENA;
990 snd_soc_write(codec, WM8903_CLOCK_RATES_2, reg);
991 break;
992 }
993
994 codec->bias_level = level;
995
996 return 0;
997 }
998
999 static int wm8903_set_dai_sysclk(struct snd_soc_dai *codec_dai,
1000 int clk_id, unsigned int freq, int dir)
1001 {
1002 struct snd_soc_codec *codec = codec_dai->codec;
1003 struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
1004
1005 wm8903->sysclk = freq;
1006
1007 return 0;
1008 }
1009
1010 static int wm8903_set_dai_fmt(struct snd_soc_dai *codec_dai,
1011 unsigned int fmt)
1012 {
1013 struct snd_soc_codec *codec = codec_dai->codec;
1014 u16 aif1 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_1);
1015
1016 aif1 &= ~(WM8903_LRCLK_DIR | WM8903_BCLK_DIR | WM8903_AIF_FMT_MASK |
1017 WM8903_AIF_LRCLK_INV | WM8903_AIF_BCLK_INV);
1018
1019 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1020 case SND_SOC_DAIFMT_CBS_CFS:
1021 break;
1022 case SND_SOC_DAIFMT_CBS_CFM:
1023 aif1 |= WM8903_LRCLK_DIR;
1024 break;
1025 case SND_SOC_DAIFMT_CBM_CFM:
1026 aif1 |= WM8903_LRCLK_DIR | WM8903_BCLK_DIR;
1027 break;
1028 case SND_SOC_DAIFMT_CBM_CFS:
1029 aif1 |= WM8903_BCLK_DIR;
1030 break;
1031 default:
1032 return -EINVAL;
1033 }
1034
1035 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1036 case SND_SOC_DAIFMT_DSP_A:
1037 aif1 |= 0x3;
1038 break;
1039 case SND_SOC_DAIFMT_DSP_B:
1040 aif1 |= 0x3 | WM8903_AIF_LRCLK_INV;
1041 break;
1042 case SND_SOC_DAIFMT_I2S:
1043 aif1 |= 0x2;
1044 break;
1045 case SND_SOC_DAIFMT_RIGHT_J:
1046 aif1 |= 0x1;
1047 break;
1048 case SND_SOC_DAIFMT_LEFT_J:
1049 break;
1050 default:
1051 return -EINVAL;
1052 }
1053
1054 /* Clock inversion */
1055 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1056 case SND_SOC_DAIFMT_DSP_A:
1057 case SND_SOC_DAIFMT_DSP_B:
1058 /* frame inversion not valid for DSP modes */
1059 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1060 case SND_SOC_DAIFMT_NB_NF:
1061 break;
1062 case SND_SOC_DAIFMT_IB_NF:
1063 aif1 |= WM8903_AIF_BCLK_INV;
1064 break;
1065 default:
1066 return -EINVAL;
1067 }
1068 break;
1069 case SND_SOC_DAIFMT_I2S:
1070 case SND_SOC_DAIFMT_RIGHT_J:
1071 case SND_SOC_DAIFMT_LEFT_J:
1072 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1073 case SND_SOC_DAIFMT_NB_NF:
1074 break;
1075 case SND_SOC_DAIFMT_IB_IF:
1076 aif1 |= WM8903_AIF_BCLK_INV | WM8903_AIF_LRCLK_INV;
1077 break;
1078 case SND_SOC_DAIFMT_IB_NF:
1079 aif1 |= WM8903_AIF_BCLK_INV;
1080 break;
1081 case SND_SOC_DAIFMT_NB_IF:
1082 aif1 |= WM8903_AIF_LRCLK_INV;
1083 break;
1084 default:
1085 return -EINVAL;
1086 }
1087 break;
1088 default:
1089 return -EINVAL;
1090 }
1091
1092 snd_soc_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
1093
1094 return 0;
1095 }
1096
1097 static int wm8903_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1098 {
1099 struct snd_soc_codec *codec = codec_dai->codec;
1100 u16 reg;
1101
1102 reg = snd_soc_read(codec, WM8903_DAC_DIGITAL_1);
1103
1104 if (mute)
1105 reg |= WM8903_DAC_MUTE;
1106 else
1107 reg &= ~WM8903_DAC_MUTE;
1108
1109 snd_soc_write(codec, WM8903_DAC_DIGITAL_1, reg);
1110
1111 return 0;
1112 }
1113
1114 /* Lookup table for CLK_SYS/fs ratio. 256fs or more is recommended
1115 * for optimal performance so we list the lower rates first and match
1116 * on the last match we find. */
1117 static struct {
1118 int div;
1119 int rate;
1120 int mode;
1121 int mclk_div;
1122 } clk_sys_ratios[] = {
1123 { 64, 0x0, 0x0, 1 },
1124 { 68, 0x0, 0x1, 1 },
1125 { 125, 0x0, 0x2, 1 },
1126 { 128, 0x1, 0x0, 1 },
1127 { 136, 0x1, 0x1, 1 },
1128 { 192, 0x2, 0x0, 1 },
1129 { 204, 0x2, 0x1, 1 },
1130
1131 { 64, 0x0, 0x0, 2 },
1132 { 68, 0x0, 0x1, 2 },
1133 { 125, 0x0, 0x2, 2 },
1134 { 128, 0x1, 0x0, 2 },
1135 { 136, 0x1, 0x1, 2 },
1136 { 192, 0x2, 0x0, 2 },
1137 { 204, 0x2, 0x1, 2 },
1138
1139 { 250, 0x2, 0x2, 1 },
1140 { 256, 0x3, 0x0, 1 },
1141 { 272, 0x3, 0x1, 1 },
1142 { 384, 0x4, 0x0, 1 },
1143 { 408, 0x4, 0x1, 1 },
1144 { 375, 0x4, 0x2, 1 },
1145 { 512, 0x5, 0x0, 1 },
1146 { 544, 0x5, 0x1, 1 },
1147 { 500, 0x5, 0x2, 1 },
1148 { 768, 0x6, 0x0, 1 },
1149 { 816, 0x6, 0x1, 1 },
1150 { 750, 0x6, 0x2, 1 },
1151 { 1024, 0x7, 0x0, 1 },
1152 { 1088, 0x7, 0x1, 1 },
1153 { 1000, 0x7, 0x2, 1 },
1154 { 1408, 0x8, 0x0, 1 },
1155 { 1496, 0x8, 0x1, 1 },
1156 { 1536, 0x9, 0x0, 1 },
1157 { 1632, 0x9, 0x1, 1 },
1158 { 1500, 0x9, 0x2, 1 },
1159
1160 { 250, 0x2, 0x2, 2 },
1161 { 256, 0x3, 0x0, 2 },
1162 { 272, 0x3, 0x1, 2 },
1163 { 384, 0x4, 0x0, 2 },
1164 { 408, 0x4, 0x1, 2 },
1165 { 375, 0x4, 0x2, 2 },
1166 { 512, 0x5, 0x0, 2 },
1167 { 544, 0x5, 0x1, 2 },
1168 { 500, 0x5, 0x2, 2 },
1169 { 768, 0x6, 0x0, 2 },
1170 { 816, 0x6, 0x1, 2 },
1171 { 750, 0x6, 0x2, 2 },
1172 { 1024, 0x7, 0x0, 2 },
1173 { 1088, 0x7, 0x1, 2 },
1174 { 1000, 0x7, 0x2, 2 },
1175 { 1408, 0x8, 0x0, 2 },
1176 { 1496, 0x8, 0x1, 2 },
1177 { 1536, 0x9, 0x0, 2 },
1178 { 1632, 0x9, 0x1, 2 },
1179 { 1500, 0x9, 0x2, 2 },
1180 };
1181
1182 /* CLK_SYS/BCLK ratios - multiplied by 10 due to .5s */
1183 static struct {
1184 int ratio;
1185 int div;
1186 } bclk_divs[] = {
1187 { 10, 0 },
1188 { 20, 2 },
1189 { 30, 3 },
1190 { 40, 4 },
1191 { 50, 5 },
1192 { 60, 7 },
1193 { 80, 8 },
1194 { 100, 9 },
1195 { 120, 11 },
1196 { 160, 12 },
1197 { 200, 13 },
1198 { 220, 14 },
1199 { 240, 15 },
1200 { 300, 17 },
1201 { 320, 18 },
1202 { 440, 19 },
1203 { 480, 20 },
1204 };
1205
1206 /* Sample rates for DSP */
1207 static struct {
1208 int rate;
1209 int value;
1210 } sample_rates[] = {
1211 { 8000, 0 },
1212 { 11025, 1 },
1213 { 12000, 2 },
1214 { 16000, 3 },
1215 { 22050, 4 },
1216 { 24000, 5 },
1217 { 32000, 6 },
1218 { 44100, 7 },
1219 { 48000, 8 },
1220 { 88200, 9 },
1221 { 96000, 10 },
1222 { 0, 0 },
1223 };
1224
1225 static int wm8903_startup(struct snd_pcm_substream *substream,
1226 struct snd_soc_dai *dai)
1227 {
1228 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1229 struct snd_soc_codec *codec = rtd->codec;
1230 struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
1231 struct snd_pcm_runtime *master_runtime;
1232
1233 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1234 wm8903->playback_active++;
1235 else
1236 wm8903->capture_active++;
1237
1238 /* The DAI has shared clocks so if we already have a playback or
1239 * capture going then constrain this substream to match it.
1240 */
1241 if (wm8903->master_substream) {
1242 master_runtime = wm8903->master_substream->runtime;
1243
1244 dev_dbg(codec->dev, "Constraining to %d bits\n",
1245 master_runtime->sample_bits);
1246
1247 snd_pcm_hw_constraint_minmax(substream->runtime,
1248 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
1249 master_runtime->sample_bits,
1250 master_runtime->sample_bits);
1251
1252 wm8903->slave_substream = substream;
1253 } else
1254 wm8903->master_substream = substream;
1255
1256 return 0;
1257 }
1258
1259 static void wm8903_shutdown(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_codec *codec = rtd->codec;
1264 struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
1265
1266 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1267 wm8903->playback_active--;
1268 else
1269 wm8903->capture_active--;
1270
1271 if (wm8903->master_substream == substream)
1272 wm8903->master_substream = wm8903->slave_substream;
1273
1274 wm8903->slave_substream = NULL;
1275 }
1276
1277 static int wm8903_hw_params(struct snd_pcm_substream *substream,
1278 struct snd_pcm_hw_params *params,
1279 struct snd_soc_dai *dai)
1280 {
1281 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1282 struct snd_soc_codec *codec =rtd->codec;
1283 struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
1284 int fs = params_rate(params);
1285 int bclk;
1286 int bclk_div;
1287 int i;
1288 int dsp_config;
1289 int clk_config;
1290 int best_val;
1291 int cur_val;
1292 int clk_sys;
1293
1294 u16 aif1 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_1);
1295 u16 aif2 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_2);
1296 u16 aif3 = snd_soc_read(codec, WM8903_AUDIO_INTERFACE_3);
1297 u16 clock0 = snd_soc_read(codec, WM8903_CLOCK_RATES_0);
1298 u16 clock1 = snd_soc_read(codec, WM8903_CLOCK_RATES_1);
1299 u16 dac_digital1 = snd_soc_read(codec, WM8903_DAC_DIGITAL_1);
1300
1301 if (substream == wm8903->slave_substream) {
1302 dev_dbg(codec->dev, "Ignoring hw_params for slave substream\n");
1303 return 0;
1304 }
1305
1306 /* Enable sloping stopband filter for low sample rates */
1307 if (fs <= 24000)
1308 dac_digital1 |= WM8903_DAC_SB_FILT;
1309 else
1310 dac_digital1 &= ~WM8903_DAC_SB_FILT;
1311
1312 /* Configure sample rate logic for DSP - choose nearest rate */
1313 dsp_config = 0;
1314 best_val = abs(sample_rates[dsp_config].rate - fs);
1315 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1316 cur_val = abs(sample_rates[i].rate - fs);
1317 if (cur_val <= best_val) {
1318 dsp_config = i;
1319 best_val = cur_val;
1320 }
1321 }
1322
1323 /* Constraints should stop us hitting this but let's make sure */
1324 if (wm8903->capture_active)
1325 switch (sample_rates[dsp_config].rate) {
1326 case 88200:
1327 case 96000:
1328 dev_err(codec->dev, "%dHz unsupported by ADC\n",
1329 fs);
1330 return -EINVAL;
1331
1332 default:
1333 break;
1334 }
1335
1336 dev_dbg(codec->dev, "DSP fs = %dHz\n", sample_rates[dsp_config].rate);
1337 clock1 &= ~WM8903_SAMPLE_RATE_MASK;
1338 clock1 |= sample_rates[dsp_config].value;
1339
1340 aif1 &= ~WM8903_AIF_WL_MASK;
1341 bclk = 2 * fs;
1342 switch (params_format(params)) {
1343 case SNDRV_PCM_FORMAT_S16_LE:
1344 bclk *= 16;
1345 break;
1346 case SNDRV_PCM_FORMAT_S20_3LE:
1347 bclk *= 20;
1348 aif1 |= 0x4;
1349 break;
1350 case SNDRV_PCM_FORMAT_S24_LE:
1351 bclk *= 24;
1352 aif1 |= 0x8;
1353 break;
1354 case SNDRV_PCM_FORMAT_S32_LE:
1355 bclk *= 32;
1356 aif1 |= 0xc;
1357 break;
1358 default:
1359 return -EINVAL;
1360 }
1361
1362 dev_dbg(codec->dev, "MCLK = %dHz, target sample rate = %dHz\n",
1363 wm8903->sysclk, fs);
1364
1365 /* We may not have an MCLK which allows us to generate exactly
1366 * the clock we want, particularly with USB derived inputs, so
1367 * approximate.
1368 */
1369 clk_config = 0;
1370 best_val = abs((wm8903->sysclk /
1371 (clk_sys_ratios[0].mclk_div *
1372 clk_sys_ratios[0].div)) - fs);
1373 for (i = 1; i < ARRAY_SIZE(clk_sys_ratios); i++) {
1374 cur_val = abs((wm8903->sysclk /
1375 (clk_sys_ratios[i].mclk_div *
1376 clk_sys_ratios[i].div)) - fs);
1377
1378 if (cur_val <= best_val) {
1379 clk_config = i;
1380 best_val = cur_val;
1381 }
1382 }
1383
1384 if (clk_sys_ratios[clk_config].mclk_div == 2) {
1385 clock0 |= WM8903_MCLKDIV2;
1386 clk_sys = wm8903->sysclk / 2;
1387 } else {
1388 clock0 &= ~WM8903_MCLKDIV2;
1389 clk_sys = wm8903->sysclk;
1390 }
1391
1392 clock1 &= ~(WM8903_CLK_SYS_RATE_MASK |
1393 WM8903_CLK_SYS_MODE_MASK);
1394 clock1 |= clk_sys_ratios[clk_config].rate << WM8903_CLK_SYS_RATE_SHIFT;
1395 clock1 |= clk_sys_ratios[clk_config].mode << WM8903_CLK_SYS_MODE_SHIFT;
1396
1397 dev_dbg(codec->dev, "CLK_SYS_RATE=%x, CLK_SYS_MODE=%x div=%d\n",
1398 clk_sys_ratios[clk_config].rate,
1399 clk_sys_ratios[clk_config].mode,
1400 clk_sys_ratios[clk_config].div);
1401
1402 dev_dbg(codec->dev, "Actual CLK_SYS = %dHz\n", clk_sys);
1403
1404 /* We may not get quite the right frequency if using
1405 * approximate clocks so look for the closest match that is
1406 * higher than the target (we need to ensure that there enough
1407 * BCLKs to clock out the samples).
1408 */
1409 bclk_div = 0;
1410 best_val = ((clk_sys * 10) / bclk_divs[0].ratio) - bclk;
1411 i = 1;
1412 while (i < ARRAY_SIZE(bclk_divs)) {
1413 cur_val = ((clk_sys * 10) / bclk_divs[i].ratio) - bclk;
1414 if (cur_val < 0) /* BCLK table is sorted */
1415 break;
1416 bclk_div = i;
1417 best_val = cur_val;
1418 i++;
1419 }
1420
1421 aif2 &= ~WM8903_BCLK_DIV_MASK;
1422 aif3 &= ~WM8903_LRCLK_RATE_MASK;
1423
1424 dev_dbg(codec->dev, "BCLK ratio %d for %dHz - actual BCLK = %dHz\n",
1425 bclk_divs[bclk_div].ratio / 10, bclk,
1426 (clk_sys * 10) / bclk_divs[bclk_div].ratio);
1427
1428 aif2 |= bclk_divs[bclk_div].div;
1429 aif3 |= bclk / fs;
1430
1431 snd_soc_write(codec, WM8903_CLOCK_RATES_0, clock0);
1432 snd_soc_write(codec, WM8903_CLOCK_RATES_1, clock1);
1433 snd_soc_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
1434 snd_soc_write(codec, WM8903_AUDIO_INTERFACE_2, aif2);
1435 snd_soc_write(codec, WM8903_AUDIO_INTERFACE_3, aif3);
1436 snd_soc_write(codec, WM8903_DAC_DIGITAL_1, dac_digital1);
1437
1438 return 0;
1439 }
1440
1441 /**
1442 * wm8903_mic_detect - Enable microphone detection via the WM8903 IRQ
1443 *
1444 * @codec: WM8903 codec
1445 * @jack: jack to report detection events on
1446 * @det: value to report for presence detection
1447 * @shrt: value to report for short detection
1448 *
1449 * Enable microphone detection via IRQ on the WM8903. If GPIOs are
1450 * being used to bring out signals to the processor then only platform
1451 * data configuration is needed for WM8903 and processor GPIOs should
1452 * be configured using snd_soc_jack_add_gpios() instead.
1453 *
1454 * The current threasholds for detection should be configured using
1455 * micdet_cfg in the platform data. Using this function will force on
1456 * the microphone bias for the device.
1457 */
1458 int wm8903_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack,
1459 int det, int shrt)
1460 {
1461 struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
1462 int irq_mask = WM8903_MICDET_EINT | WM8903_MICSHRT_EINT;
1463
1464 dev_dbg(codec->dev, "Enabling microphone detection: %x %x\n",
1465 det, shrt);
1466
1467 /* Store the configuration */
1468 wm8903->mic_jack = jack;
1469 wm8903->mic_det = det;
1470 wm8903->mic_short = shrt;
1471
1472 /* Enable interrupts we've got a report configured for */
1473 if (det)
1474 irq_mask &= ~WM8903_MICDET_EINT;
1475 if (shrt)
1476 irq_mask &= ~WM8903_MICSHRT_EINT;
1477
1478 snd_soc_update_bits(codec, WM8903_INTERRUPT_STATUS_1_MASK,
1479 WM8903_MICDET_EINT | WM8903_MICSHRT_EINT,
1480 irq_mask);
1481
1482 if (det && shrt) {
1483 /* Enable mic detection, this may not have been set through
1484 * platform data (eg, if the defaults are OK). */
1485 snd_soc_update_bits(codec, WM8903_WRITE_SEQUENCER_0,
1486 WM8903_WSEQ_ENA, WM8903_WSEQ_ENA);
1487 snd_soc_update_bits(codec, WM8903_MIC_BIAS_CONTROL_0,
1488 WM8903_MICDET_ENA, WM8903_MICDET_ENA);
1489 } else {
1490 snd_soc_update_bits(codec, WM8903_MIC_BIAS_CONTROL_0,
1491 WM8903_MICDET_ENA, 0);
1492 }
1493
1494 return 0;
1495 }
1496 EXPORT_SYMBOL_GPL(wm8903_mic_detect);
1497
1498 static irqreturn_t wm8903_irq(int irq, void *data)
1499 {
1500 struct snd_soc_codec *codec = data;
1501 struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
1502 int mic_report;
1503 int int_pol;
1504 int int_val = 0;
1505 int mask = ~snd_soc_read(codec, WM8903_INTERRUPT_STATUS_1_MASK);
1506
1507 int_val = snd_soc_read(codec, WM8903_INTERRUPT_STATUS_1) & mask;
1508
1509 if (int_val & WM8903_WSEQ_BUSY_EINT) {
1510 dev_dbg(codec->dev, "Write sequencer done\n");
1511 complete(&wm8903->wseq);
1512 }
1513
1514 /*
1515 * The rest is microphone jack detection. We need to manually
1516 * invert the polarity of the interrupt after each event - to
1517 * simplify the code keep track of the last state we reported
1518 * and just invert the relevant bits in both the report and
1519 * the polarity register.
1520 */
1521 mic_report = wm8903->mic_last_report;
1522 int_pol = snd_soc_read(codec, WM8903_INTERRUPT_POLARITY_1);
1523
1524 if (int_val & WM8903_MICSHRT_EINT) {
1525 dev_dbg(codec->dev, "Microphone short (pol=%x)\n", int_pol);
1526
1527 mic_report ^= wm8903->mic_short;
1528 int_pol ^= WM8903_MICSHRT_INV;
1529 }
1530
1531 if (int_val & WM8903_MICDET_EINT) {
1532 dev_dbg(codec->dev, "Microphone detect (pol=%x)\n", int_pol);
1533
1534 mic_report ^= wm8903->mic_det;
1535 int_pol ^= WM8903_MICDET_INV;
1536
1537 msleep(wm8903->mic_delay);
1538 }
1539
1540 snd_soc_update_bits(codec, WM8903_INTERRUPT_POLARITY_1,
1541 WM8903_MICSHRT_INV | WM8903_MICDET_INV, int_pol);
1542
1543 snd_soc_jack_report(wm8903->mic_jack, mic_report,
1544 wm8903->mic_short | wm8903->mic_det);
1545
1546 wm8903->mic_last_report = mic_report;
1547
1548 return IRQ_HANDLED;
1549 }
1550
1551 #define WM8903_PLAYBACK_RATES (SNDRV_PCM_RATE_8000 |\
1552 SNDRV_PCM_RATE_11025 | \
1553 SNDRV_PCM_RATE_16000 | \
1554 SNDRV_PCM_RATE_22050 | \
1555 SNDRV_PCM_RATE_32000 | \
1556 SNDRV_PCM_RATE_44100 | \
1557 SNDRV_PCM_RATE_48000 | \
1558 SNDRV_PCM_RATE_88200 | \
1559 SNDRV_PCM_RATE_96000)
1560
1561 #define WM8903_CAPTURE_RATES (SNDRV_PCM_RATE_8000 |\
1562 SNDRV_PCM_RATE_11025 | \
1563 SNDRV_PCM_RATE_16000 | \
1564 SNDRV_PCM_RATE_22050 | \
1565 SNDRV_PCM_RATE_32000 | \
1566 SNDRV_PCM_RATE_44100 | \
1567 SNDRV_PCM_RATE_48000)
1568
1569 #define WM8903_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
1570 SNDRV_PCM_FMTBIT_S20_3LE |\
1571 SNDRV_PCM_FMTBIT_S24_LE)
1572
1573 static struct snd_soc_dai_ops wm8903_dai_ops = {
1574 .startup = wm8903_startup,
1575 .shutdown = wm8903_shutdown,
1576 .hw_params = wm8903_hw_params,
1577 .digital_mute = wm8903_digital_mute,
1578 .set_fmt = wm8903_set_dai_fmt,
1579 .set_sysclk = wm8903_set_dai_sysclk,
1580 };
1581
1582 static struct snd_soc_dai_driver wm8903_dai = {
1583 .name = "wm8903-hifi",
1584 .playback = {
1585 .stream_name = "Playback",
1586 .channels_min = 2,
1587 .channels_max = 2,
1588 .rates = WM8903_PLAYBACK_RATES,
1589 .formats = WM8903_FORMATS,
1590 },
1591 .capture = {
1592 .stream_name = "Capture",
1593 .channels_min = 2,
1594 .channels_max = 2,
1595 .rates = WM8903_CAPTURE_RATES,
1596 .formats = WM8903_FORMATS,
1597 },
1598 .ops = &wm8903_dai_ops,
1599 .symmetric_rates = 1,
1600 };
1601
1602 static int wm8903_suspend(struct snd_soc_codec *codec, pm_message_t state)
1603 {
1604 wm8903_set_bias_level(codec, SND_SOC_BIAS_OFF);
1605
1606 return 0;
1607 }
1608
1609 static int wm8903_resume(struct snd_soc_codec *codec)
1610 {
1611 int i;
1612 u16 *reg_cache = codec->reg_cache;
1613 u16 *tmp_cache = kmemdup(reg_cache, sizeof(wm8903_reg_defaults),
1614 GFP_KERNEL);
1615
1616 /* Bring the codec back up to standby first to minimise pop/clicks */
1617 wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1618
1619 /* Sync back everything else */
1620 if (tmp_cache) {
1621 for (i = 2; i < ARRAY_SIZE(wm8903_reg_defaults); i++)
1622 if (tmp_cache[i] != reg_cache[i])
1623 snd_soc_write(codec, i, tmp_cache[i]);
1624 kfree(tmp_cache);
1625 } else {
1626 dev_err(codec->dev, "Failed to allocate temporary cache\n");
1627 }
1628
1629 return 0;
1630 }
1631
1632 static int wm8903_probe(struct snd_soc_codec *codec)
1633 {
1634 struct wm8903_platform_data *pdata = dev_get_platdata(codec->dev);
1635 struct wm8903_priv *wm8903 = snd_soc_codec_get_drvdata(codec);
1636 int ret, i;
1637 int trigger, irq_pol;
1638 u16 val;
1639
1640 init_completion(&wm8903->wseq);
1641
1642 ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
1643 if (ret != 0) {
1644 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1645 return ret;
1646 }
1647
1648 val = snd_soc_read(codec, WM8903_SW_RESET_AND_ID);
1649 if (val != wm8903_reg_defaults[WM8903_SW_RESET_AND_ID]) {
1650 dev_err(codec->dev,
1651 "Device with ID register %x is not a WM8903\n", val);
1652 return -ENODEV;
1653 }
1654
1655 val = snd_soc_read(codec, WM8903_REVISION_NUMBER);
1656 dev_info(codec->dev, "WM8903 revision %d\n",
1657 val & WM8903_CHIP_REV_MASK);
1658
1659 wm8903_reset(codec);
1660
1661 /* Set up GPIOs and microphone detection */
1662 if (pdata) {
1663 for (i = 0; i < ARRAY_SIZE(pdata->gpio_cfg); i++) {
1664 if (!pdata->gpio_cfg[i])
1665 continue;
1666
1667 snd_soc_write(codec, WM8903_GPIO_CONTROL_1 + i,
1668 pdata->gpio_cfg[i] & 0xffff);
1669 }
1670
1671 snd_soc_write(codec, WM8903_MIC_BIAS_CONTROL_0,
1672 pdata->micdet_cfg);
1673
1674 /* Microphone detection needs the WSEQ clock */
1675 if (pdata->micdet_cfg)
1676 snd_soc_update_bits(codec, WM8903_WRITE_SEQUENCER_0,
1677 WM8903_WSEQ_ENA, WM8903_WSEQ_ENA);
1678
1679 wm8903->mic_delay = pdata->micdet_delay;
1680 }
1681
1682 if (wm8903->irq) {
1683 if (pdata && pdata->irq_active_low) {
1684 trigger = IRQF_TRIGGER_LOW;
1685 irq_pol = WM8903_IRQ_POL;
1686 } else {
1687 trigger = IRQF_TRIGGER_HIGH;
1688 irq_pol = 0;
1689 }
1690
1691 snd_soc_update_bits(codec, WM8903_INTERRUPT_CONTROL,
1692 WM8903_IRQ_POL, irq_pol);
1693
1694 ret = request_threaded_irq(wm8903->irq, NULL, wm8903_irq,
1695 trigger | IRQF_ONESHOT,
1696 "wm8903", codec);
1697 if (ret != 0) {
1698 dev_err(codec->dev, "Failed to request IRQ: %d\n",
1699 ret);
1700 return ret;
1701 }
1702
1703 /* Enable write sequencer interrupts */
1704 snd_soc_update_bits(codec, WM8903_INTERRUPT_STATUS_1_MASK,
1705 WM8903_IM_WSEQ_BUSY_EINT, 0);
1706 }
1707
1708 /* power on device */
1709 wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1710
1711 /* Latch volume update bits */
1712 val = snd_soc_read(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT);
1713 val |= WM8903_ADCVU;
1714 snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT, val);
1715 snd_soc_write(codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT, val);
1716
1717 val = snd_soc_read(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT);
1718 val |= WM8903_DACVU;
1719 snd_soc_write(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT, val);
1720 snd_soc_write(codec, WM8903_DAC_DIGITAL_VOLUME_RIGHT, val);
1721
1722 val = snd_soc_read(codec, WM8903_ANALOGUE_OUT1_LEFT);
1723 val |= WM8903_HPOUTVU;
1724 snd_soc_write(codec, WM8903_ANALOGUE_OUT1_LEFT, val);
1725 snd_soc_write(codec, WM8903_ANALOGUE_OUT1_RIGHT, val);
1726
1727 val = snd_soc_read(codec, WM8903_ANALOGUE_OUT2_LEFT);
1728 val |= WM8903_LINEOUTVU;
1729 snd_soc_write(codec, WM8903_ANALOGUE_OUT2_LEFT, val);
1730 snd_soc_write(codec, WM8903_ANALOGUE_OUT2_RIGHT, val);
1731
1732 val = snd_soc_read(codec, WM8903_ANALOGUE_OUT3_LEFT);
1733 val |= WM8903_SPKVU;
1734 snd_soc_write(codec, WM8903_ANALOGUE_OUT3_LEFT, val);
1735 snd_soc_write(codec, WM8903_ANALOGUE_OUT3_RIGHT, val);
1736
1737 /* Enable DAC soft mute by default */
1738 val = snd_soc_read(codec, WM8903_DAC_DIGITAL_1);
1739 val |= WM8903_DAC_MUTEMODE;
1740 snd_soc_write(codec, WM8903_DAC_DIGITAL_1, val);
1741
1742 snd_soc_add_controls(codec, wm8903_snd_controls,
1743 ARRAY_SIZE(wm8903_snd_controls));
1744 wm8903_add_widgets(codec);
1745
1746 return ret;
1747 }
1748
1749 /* power down chip */
1750 static int wm8903_remove(struct snd_soc_codec *codec)
1751 {
1752 wm8903_set_bias_level(codec, SND_SOC_BIAS_OFF);
1753 return 0;
1754 }
1755
1756 static struct snd_soc_codec_driver soc_codec_dev_wm8903 = {
1757 .probe = wm8903_probe,
1758 .remove = wm8903_remove,
1759 .suspend = wm8903_suspend,
1760 .resume = wm8903_resume,
1761 .set_bias_level = wm8903_set_bias_level,
1762 .reg_cache_size = ARRAY_SIZE(wm8903_reg_defaults),
1763 .reg_word_size = sizeof(u16),
1764 .reg_cache_default = wm8903_reg_defaults,
1765 .volatile_register = wm8903_volatile_register,
1766 };
1767
1768 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1769 static __devinit int wm8903_i2c_probe(struct i2c_client *i2c,
1770 const struct i2c_device_id *id)
1771 {
1772 struct wm8903_priv *wm8903;
1773 int ret;
1774
1775 wm8903 = kzalloc(sizeof(struct wm8903_priv), GFP_KERNEL);
1776 if (wm8903 == NULL)
1777 return -ENOMEM;
1778
1779 i2c_set_clientdata(i2c, wm8903);
1780 wm8903->irq = i2c->irq;
1781
1782 ret = snd_soc_register_codec(&i2c->dev,
1783 &soc_codec_dev_wm8903, &wm8903_dai, 1);
1784 if (ret < 0)
1785 kfree(wm8903);
1786 return ret;
1787 }
1788
1789 static __devexit int wm8903_i2c_remove(struct i2c_client *client)
1790 {
1791 snd_soc_unregister_codec(&client->dev);
1792 kfree(i2c_get_clientdata(client));
1793 return 0;
1794 }
1795
1796 static const struct i2c_device_id wm8903_i2c_id[] = {
1797 { "wm8903", 0 },
1798 { }
1799 };
1800 MODULE_DEVICE_TABLE(i2c, wm8903_i2c_id);
1801
1802 static struct i2c_driver wm8903_i2c_driver = {
1803 .driver = {
1804 .name = "wm8903-codec",
1805 .owner = THIS_MODULE,
1806 },
1807 .probe = wm8903_i2c_probe,
1808 .remove = __devexit_p(wm8903_i2c_remove),
1809 .id_table = wm8903_i2c_id,
1810 };
1811 #endif
1812
1813 static int __init wm8903_modinit(void)
1814 {
1815 int ret = 0;
1816 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1817 ret = i2c_add_driver(&wm8903_i2c_driver);
1818 if (ret != 0) {
1819 printk(KERN_ERR "Failed to register wm8903 I2C driver: %d\n",
1820 ret);
1821 }
1822 #endif
1823 return ret;
1824 }
1825 module_init(wm8903_modinit);
1826
1827 static void __exit wm8903_exit(void)
1828 {
1829 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1830 i2c_del_driver(&wm8903_i2c_driver);
1831 #endif
1832 }
1833 module_exit(wm8903_exit);
1834
1835 MODULE_DESCRIPTION("ASoC WM8903 driver");
1836 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.cm>");
1837 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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