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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-08-26 08:05:27 -0400
committerJaroslav Kysela <perex@perex.cz>2008-08-29 04:05:47 -0400
commitf1c0a02f32f86f604d811876e748a405c68cc57d (patch)
tree6db6e774ad7210bfc118dba30b9d4016dbc479e7 /sound/soc/codecs/wm8903.c
parentd67f49b0211ff6cc2192bef884cb7b27acb32c56 (diff)
ALSA: ASoC: Add WM8903 CODEC driver
The WM8903 is a high performance ultra-low power stereo CODEC optimised for portable audio applications. Features include: * 5mW power consumption for DAC to headphone playback * Stereo DAC SNR 96dB typical, THD -86dB typical * Stereo ADC SNR 93dB typical, THD -80dB typical * Up to 3 single ended inputs per stereo channel * Up to 2 pseudo differential inputs per stereo channel * Up to 1 fully differential mic input per stereo channel * Digital Dynamic Range Controller (compressor/limiter) * Digital sidetone mixing Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/soc/codecs/wm8903.c')
-rw-r--r--sound/soc/codecs/wm8903.c1813
1 files changed, 1813 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
new file mode 100644
index 000000000000..73dfd5b8f148
--- /dev/null
+++ b/sound/soc/codecs/wm8903.c
@@ -0,0 +1,1813 @@
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
36struct wm8903_priv {
37 int sysclk;
38
39 /* Reference counts */
40 int charge_pump_users;
41 int class_w_users;
42 int playback_active;
43 int capture_active;
44
45 struct snd_pcm_substream *master_substream;
46 struct snd_pcm_substream *slave_substream;
47};
48
49/* Register defaults at reset */
50static u16 wm8903_reg_defaults[] = {
51 0x8903, /* R0 - SW Reset and ID */
52 0x0000, /* R1 - Revision Number */
53 0x0000, /* R2 */
54 0x0000, /* R3 */
55 0x0018, /* R4 - Bias Control 0 */
56 0x0000, /* R5 - VMID Control 0 */
57 0x0000, /* R6 - Mic Bias Control 0 */
58 0x0000, /* R7 */
59 0x0001, /* R8 - Analogue DAC 0 */
60 0x0000, /* R9 */
61 0x0001, /* R10 - Analogue ADC 0 */
62 0x0000, /* R11 */
63 0x0000, /* R12 - Power Management 0 */
64 0x0000, /* R13 - Power Management 1 */
65 0x0000, /* R14 - Power Management 2 */
66 0x0000, /* R15 - Power Management 3 */
67 0x0000, /* R16 - Power Management 4 */
68 0x0000, /* R17 - Power Management 5 */
69 0x0000, /* R18 - Power Management 6 */
70 0x0000, /* R19 */
71 0x0400, /* R20 - Clock Rates 0 */
72 0x0D07, /* R21 - Clock Rates 1 */
73 0x0000, /* R22 - Clock Rates 2 */
74 0x0000, /* R23 */
75 0x0050, /* R24 - Audio Interface 0 */
76 0x0242, /* R25 - Audio Interface 1 */
77 0x0008, /* R26 - Audio Interface 2 */
78 0x0022, /* R27 - Audio Interface 3 */
79 0x0000, /* R28 */
80 0x0000, /* R29 */
81 0x00C0, /* R30 - DAC Digital Volume Left */
82 0x00C0, /* R31 - DAC Digital Volume Right */
83 0x0000, /* R32 - DAC Digital 0 */
84 0x0000, /* R33 - DAC Digital 1 */
85 0x0000, /* R34 */
86 0x0000, /* R35 */
87 0x00C0, /* R36 - ADC Digital Volume Left */
88 0x00C0, /* R37 - ADC Digital Volume Right */
89 0x0000, /* R38 - ADC Digital 0 */
90 0x0073, /* R39 - Digital Microphone 0 */
91 0x09BF, /* R40 - DRC 0 */
92 0x3241, /* R41 - DRC 1 */
93 0x0020, /* R42 - DRC 2 */
94 0x0000, /* R43 - DRC 3 */
95 0x0085, /* R44 - Analogue Left Input 0 */
96 0x0085, /* R45 - Analogue Right Input 0 */
97 0x0044, /* R46 - Analogue Left Input 1 */
98 0x0044, /* R47 - Analogue Right Input 1 */
99 0x0000, /* R48 */
100 0x0000, /* R49 */
101 0x0008, /* R50 - Analogue Left Mix 0 */
102 0x0004, /* R51 - Analogue Right Mix 0 */
103 0x0000, /* R52 - Analogue Spk Mix Left 0 */
104 0x0000, /* R53 - Analogue Spk Mix Left 1 */
105 0x0000, /* R54 - Analogue Spk Mix Right 0 */
106 0x0000, /* R55 - Analogue Spk Mix Right 1 */
107 0x0000, /* R56 */
108 0x002D, /* R57 - Analogue OUT1 Left */
109 0x002D, /* R58 - Analogue OUT1 Right */
110 0x0039, /* R59 - Analogue OUT2 Left */
111 0x0039, /* R60 - Analogue OUT2 Right */
112 0x0100, /* R61 */
113 0x0139, /* R62 - Analogue OUT3 Left */
114 0x0139, /* R63 - Analogue OUT3 Right */
115 0x0000, /* R64 */
116 0x0000, /* R65 - Analogue SPK Output Control 0 */
117 0x0000, /* R66 */
118 0x0010, /* R67 - DC Servo 0 */
119 0x0100, /* R68 */
120 0x00A4, /* R69 - DC Servo 2 */
121 0x0807, /* R70 */
122 0x0000, /* R71 */
123 0x0000, /* R72 */
124 0x0000, /* R73 */
125 0x0000, /* R74 */
126 0x0000, /* R75 */
127 0x0000, /* R76 */
128 0x0000, /* R77 */
129 0x0000, /* R78 */
130 0x000E, /* R79 */
131 0x0000, /* R80 */
132 0x0000, /* R81 */
133 0x0000, /* R82 */
134 0x0000, /* R83 */
135 0x0000, /* R84 */
136 0x0000, /* R85 */
137 0x0000, /* R86 */
138 0x0006, /* R87 */
139 0x0000, /* R88 */
140 0x0000, /* R89 */
141 0x0000, /* R90 - Analogue HP 0 */
142 0x0060, /* R91 */
143 0x0000, /* R92 */
144 0x0000, /* R93 */
145 0x0000, /* R94 - Analogue Lineout 0 */
146 0x0060, /* R95 */
147 0x0000, /* R96 */
148 0x0000, /* R97 */
149 0x0000, /* R98 - Charge Pump 0 */
150 0x1F25, /* R99 */
151 0x2B19, /* R100 */
152 0x01C0, /* R101 */
153 0x01EF, /* R102 */
154 0x2B00, /* R103 */
155 0x0000, /* R104 - Class W 0 */
156 0x01C0, /* R105 */
157 0x1C10, /* R106 */
158 0x0000, /* R107 */
159 0x0000, /* R108 - Write Sequencer 0 */
160 0x0000, /* R109 - Write Sequencer 1 */
161 0x0000, /* R110 - Write Sequencer 2 */
162 0x0000, /* R111 - Write Sequencer 3 */
163 0x0000, /* R112 - Write Sequencer 4 */
164 0x0000, /* R113 */
165 0x0000, /* R114 - Control Interface */
166 0x0000, /* R115 */
167 0x00A8, /* R116 - GPIO Control 1 */
168 0x00A8, /* R117 - GPIO Control 2 */
169 0x00A8, /* R118 - GPIO Control 3 */
170 0x0220, /* R119 - GPIO Control 4 */
171 0x01A0, /* R120 - GPIO Control 5 */
172 0x0000, /* R121 - Interrupt Status 1 */
173 0xFFFF, /* R122 - Interrupt Status 1 Mask */
174 0x0000, /* R123 - Interrupt Polarity 1 */
175 0x0000, /* R124 */
176 0x0003, /* R125 */
177 0x0000, /* R126 - Interrupt Control */
178 0x0000, /* R127 */
179 0x0005, /* R128 */
180 0x0000, /* R129 - Control Interface Test 1 */
181 0x0000, /* R130 */
182 0x0000, /* R131 */
183 0x0000, /* R132 */
184 0x0000, /* R133 */
185 0x0000, /* R134 */
186 0x03FF, /* R135 */
187 0x0007, /* R136 */
188 0x0040, /* R137 */
189 0x0000, /* R138 */
190 0x0000, /* R139 */
191 0x0000, /* R140 */
192 0x0000, /* R141 */
193 0x0000, /* R142 */
194 0x0000, /* R143 */
195 0x0000, /* R144 */
196 0x0000, /* R145 */
197 0x0000, /* R146 */
198 0x0000, /* R147 */
199 0x4000, /* R148 */
200 0x6810, /* R149 - Charge Pump Test 1 */
201 0x0004, /* R150 */
202 0x0000, /* R151 */
203 0x0000, /* R152 */
204 0x0000, /* R153 */
205 0x0000, /* R154 */
206 0x0000, /* R155 */
207 0x0000, /* R156 */
208 0x0000, /* R157 */
209 0x0000, /* R158 */
210 0x0000, /* R159 */
211 0x0000, /* R160 */
212 0x0000, /* R161 */
213 0x0000, /* R162 */
214 0x0000, /* R163 */
215 0x0028, /* R164 - Clock Rate Test 4 */
216 0x0004, /* R165 */
217 0x0000, /* R166 */
218 0x0060, /* R167 */
219 0x0000, /* R168 */
220 0x0000, /* R169 */
221 0x0000, /* R170 */
222 0x0000, /* R171 */
223 0x0000, /* R172 - Analogue Output Bias 0 */
224};
225
226static unsigned int wm8903_read_reg_cache(struct snd_soc_codec *codec,
227 unsigned int reg)
228{
229 u16 *cache = codec->reg_cache;
230
231 BUG_ON(reg >= ARRAY_SIZE(wm8903_reg_defaults));
232
233 return cache[reg];
234}
235
236static unsigned int wm8903_hw_read(struct snd_soc_codec *codec, u8 reg)
237{
238 struct i2c_msg xfer[2];
239 u16 data;
240 int ret;
241 struct i2c_client *client = codec->control_data;
242
243 /* Write register */
244 xfer[0].addr = client->addr;
245 xfer[0].flags = 0;
246 xfer[0].len = 1;
247 xfer[0].buf = &reg;
248
249 /* Read data */
250 xfer[1].addr = client->addr;
251 xfer[1].flags = I2C_M_RD;
252 xfer[1].len = 2;
253 xfer[1].buf = (u8 *)&data;
254
255 ret = i2c_transfer(client->adapter, xfer, 2);
256 if (ret != 2) {
257 pr_err("i2c_transfer returned %d\n", ret);
258 return 0;
259 }
260
261 return (data >> 8) | ((data & 0xff) << 8);
262}
263
264static unsigned int wm8903_read(struct snd_soc_codec *codec,
265 unsigned int reg)
266{
267 switch (reg) {
268 case WM8903_SW_RESET_AND_ID:
269 case WM8903_REVISION_NUMBER:
270 case WM8903_INTERRUPT_STATUS_1:
271 case WM8903_WRITE_SEQUENCER_4:
272 return wm8903_hw_read(codec, reg);
273
274 default:
275 return wm8903_read_reg_cache(codec, reg);
276 }
277}
278
279static void wm8903_write_reg_cache(struct snd_soc_codec *codec,
280 u16 reg, unsigned int value)
281{
282 u16 *cache = codec->reg_cache;
283
284 BUG_ON(reg >= ARRAY_SIZE(wm8903_reg_defaults));
285
286 switch (reg) {
287 case WM8903_SW_RESET_AND_ID:
288 case WM8903_REVISION_NUMBER:
289 break;
290
291 default:
292 cache[reg] = value;
293 break;
294 }
295}
296
297static int wm8903_write(struct snd_soc_codec *codec, unsigned int reg,
298 unsigned int value)
299{
300 u8 data[3];
301
302 wm8903_write_reg_cache(codec, reg, value);
303
304 /* Data format is 1 byte of address followed by 2 bytes of data */
305 data[0] = reg;
306 data[1] = (value >> 8) & 0xff;
307 data[2] = value & 0xff;
308
309 if (codec->hw_write(codec->control_data, data, 3) == 2)
310 return 0;
311 else
312 return -EIO;
313}
314
315static int wm8903_run_sequence(struct snd_soc_codec *codec, unsigned int start)
316{
317 u16 reg[5];
318 struct i2c_client *i2c = codec->control_data;
319
320 BUG_ON(start > 48);
321
322 /* Enable the sequencer */
323 reg[0] = wm8903_read(codec, WM8903_WRITE_SEQUENCER_0);
324 reg[0] |= WM8903_WSEQ_ENA;
325 wm8903_write(codec, WM8903_WRITE_SEQUENCER_0, reg[0]);
326
327 dev_dbg(&i2c->dev, "Starting sequence at %d\n", start);
328
329 wm8903_write(codec, WM8903_WRITE_SEQUENCER_3,
330 start | WM8903_WSEQ_START);
331
332 /* Wait for it to complete. If we have the interrupt wired up then
333 * we could block waiting for an interrupt, though polling may still
334 * be desirable for diagnostic purposes.
335 */
336 do {
337 msleep(10);
338
339 reg[4] = wm8903_read(codec, WM8903_WRITE_SEQUENCER_4);
340 } while (reg[4] & WM8903_WSEQ_BUSY);
341
342 dev_dbg(&i2c->dev, "Sequence complete\n");
343
344 /* Disable the sequencer again */
345 wm8903_write(codec, WM8903_WRITE_SEQUENCER_0,
346 reg[0] & ~WM8903_WSEQ_ENA);
347
348 return 0;
349}
350
351static void wm8903_sync_reg_cache(struct snd_soc_codec *codec, u16 *cache)
352{
353 int i;
354
355 /* There really ought to be something better we can do here :/ */
356 for (i = 0; i < ARRAY_SIZE(wm8903_reg_defaults); i++)
357 cache[i] = wm8903_hw_read(codec, i);
358}
359
360static void wm8903_reset(struct snd_soc_codec *codec)
361{
362 wm8903_write(codec, WM8903_SW_RESET_AND_ID, 0);
363}
364
365#define WM8903_OUTPUT_SHORT 0x8
366#define WM8903_OUTPUT_OUT 0x4
367#define WM8903_OUTPUT_INT 0x2
368#define WM8903_OUTPUT_IN 0x1
369
370/*
371 * Event for headphone and line out amplifier power changes. Special
372 * power up/down sequences are required in order to maximise pop/click
373 * performance.
374 */
375static int wm8903_output_event(struct snd_soc_dapm_widget *w,
376 struct snd_kcontrol *kcontrol, int event)
377{
378 struct snd_soc_codec *codec = w->codec;
379 struct wm8903_priv *wm8903 = codec->private_data;
380 struct i2c_client *i2c = codec->control_data;
381 u16 val;
382 u16 reg;
383 int shift;
384 u16 cp_reg = wm8903_read(codec, WM8903_CHARGE_PUMP_0);
385
386 switch (w->reg) {
387 case WM8903_POWER_MANAGEMENT_2:
388 reg = WM8903_ANALOGUE_HP_0;
389 break;
390 case WM8903_POWER_MANAGEMENT_3:
391 reg = WM8903_ANALOGUE_LINEOUT_0;
392 break;
393 default:
394 BUG();
395 }
396
397 switch (w->shift) {
398 case 0:
399 shift = 0;
400 break;
401 case 1:
402 shift = 4;
403 break;
404 default:
405 BUG();
406 }
407
408 if (event & SND_SOC_DAPM_PRE_PMU) {
409 val = wm8903_read(codec, reg);
410
411 /* Short the output */
412 val &= ~(WM8903_OUTPUT_SHORT << shift);
413 wm8903_write(codec, reg, val);
414
415 wm8903->charge_pump_users++;
416
417 dev_dbg(&i2c->dev, "Charge pump use count now %d\n",
418 wm8903->charge_pump_users);
419
420 if (wm8903->charge_pump_users == 1) {
421 dev_dbg(&i2c->dev, "Enabling charge pump\n");
422 wm8903_write(codec, WM8903_CHARGE_PUMP_0,
423 cp_reg | WM8903_CP_ENA);
424 mdelay(4);
425 }
426 }
427
428 if (event & SND_SOC_DAPM_POST_PMU) {
429 val = wm8903_read(codec, reg);
430
431 val |= (WM8903_OUTPUT_IN << shift);
432 wm8903_write(codec, reg, val);
433
434 val |= (WM8903_OUTPUT_INT << shift);
435 wm8903_write(codec, reg, val);
436
437 /* Turn on the output ENA_OUTP */
438 val |= (WM8903_OUTPUT_OUT << shift);
439 wm8903_write(codec, reg, val);
440
441 /* Remove the short */
442 val |= (WM8903_OUTPUT_SHORT << shift);
443 wm8903_write(codec, reg, val);
444 }
445
446 if (event & SND_SOC_DAPM_PRE_PMD) {
447 val = wm8903_read(codec, reg);
448
449 /* Short the output */
450 val &= ~(WM8903_OUTPUT_SHORT << shift);
451 wm8903_write(codec, reg, val);
452
453 /* Then disable the intermediate and output stages */
454 val &= ~((WM8903_OUTPUT_OUT | WM8903_OUTPUT_INT |
455 WM8903_OUTPUT_IN) << shift);
456 wm8903_write(codec, reg, val);
457 }
458
459 if (event & SND_SOC_DAPM_POST_PMD) {
460 wm8903->charge_pump_users--;
461
462 dev_dbg(&i2c->dev, "Charge pump use count now %d\n",
463 wm8903->charge_pump_users);
464
465 if (wm8903->charge_pump_users == 0) {
466 dev_dbg(&i2c->dev, "Disabling charge pump\n");
467 wm8903_write(codec, WM8903_CHARGE_PUMP_0,
468 cp_reg & ~WM8903_CP_ENA);
469 }
470 }
471
472 return 0;
473}
474
475/*
476 * When used with DAC outputs only the WM8903 charge pump supports
477 * operation in class W mode, providing very low power consumption
478 * when used with digital sources. Enable and disable this mode
479 * automatically depending on the mixer configuration.
480 *
481 * All the relevant controls are simple switches.
482 */
483static int wm8903_class_w_put(struct snd_kcontrol *kcontrol,
484 struct snd_ctl_elem_value *ucontrol)
485{
486 struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol);
487 struct snd_soc_codec *codec = widget->codec;
488 struct wm8903_priv *wm8903 = codec->private_data;
489 struct i2c_client *i2c = codec->control_data;
490 u16 reg;
491 int ret;
492
493 reg = wm8903_read(codec, WM8903_CLASS_W_0);
494
495 /* Turn it off if we're about to enable bypass */
496 if (ucontrol->value.integer.value[0]) {
497 if (wm8903->class_w_users == 0) {
498 dev_dbg(&i2c->dev, "Disabling Class W\n");
499 wm8903_write(codec, WM8903_CLASS_W_0, reg &
500 ~(WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V));
501 }
502 wm8903->class_w_users++;
503 }
504
505 /* Implement the change */
506 ret = snd_soc_dapm_put_volsw(kcontrol, ucontrol);
507
508 /* If we've just disabled the last bypass path turn Class W on */
509 if (!ucontrol->value.integer.value[0]) {
510 if (wm8903->class_w_users == 1) {
511 dev_dbg(&i2c->dev, "Enabling Class W\n");
512 wm8903_write(codec, WM8903_CLASS_W_0, reg |
513 WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V);
514 }
515 wm8903->class_w_users--;
516 }
517
518 dev_dbg(&i2c->dev, "Bypass use count now %d\n",
519 wm8903->class_w_users);
520
521 return ret;
522}
523
524#define SOC_DAPM_SINGLE_W(xname, reg, shift, max, invert) \
525{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
526 .info = snd_soc_info_volsw, \
527 .get = snd_soc_dapm_get_volsw, .put = wm8903_class_w_put, \
528 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
529
530
531/* ALSA can only do steps of .01dB */
532static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
533
534static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
535
536static const DECLARE_TLV_DB_SCALE(drc_tlv_thresh, 0, 75, 0);
537static const DECLARE_TLV_DB_SCALE(drc_tlv_amp, -2250, 75, 0);
538static const DECLARE_TLV_DB_SCALE(drc_tlv_min, 0, 600, 0);
539static const DECLARE_TLV_DB_SCALE(drc_tlv_max, 1200, 600, 0);
540static const DECLARE_TLV_DB_SCALE(drc_tlv_startup, -300, 50, 0);
541
542static const char *drc_slope_text[] = {
543 "1", "1/2", "1/4", "1/8", "1/16", "0"
544};
545
546static const struct soc_enum drc_slope_r0 =
547 SOC_ENUM_SINGLE(WM8903_DRC_2, 3, 6, drc_slope_text);
548
549static const struct soc_enum drc_slope_r1 =
550 SOC_ENUM_SINGLE(WM8903_DRC_2, 0, 6, drc_slope_text);
551
552static const char *drc_attack_text[] = {
553 "instantaneous",
554 "363us", "762us", "1.45ms", "2.9ms", "5.8ms", "11.6ms", "23.2ms",
555 "46.4ms", "92.8ms", "185.6ms"
556};
557
558static const struct soc_enum drc_attack =
559 SOC_ENUM_SINGLE(WM8903_DRC_1, 12, 11, drc_attack_text);
560
561static const char *drc_decay_text[] = {
562 "186ms", "372ms", "743ms", "1.49s", "2.97s", "5.94s", "11.89s",
563 "23.87s", "47.56s"
564};
565
566static const struct soc_enum drc_decay =
567 SOC_ENUM_SINGLE(WM8903_DRC_1, 8, 9, drc_decay_text);
568
569static const char *drc_ff_delay_text[] = {
570 "5 samples", "9 samples"
571};
572
573static const struct soc_enum drc_ff_delay =
574 SOC_ENUM_SINGLE(WM8903_DRC_0, 5, 2, drc_ff_delay_text);
575
576static const char *drc_qr_decay_text[] = {
577 "0.725ms", "1.45ms", "5.8ms"
578};
579
580static const struct soc_enum drc_qr_decay =
581 SOC_ENUM_SINGLE(WM8903_DRC_1, 4, 3, drc_qr_decay_text);
582
583static const char *drc_smoothing_text[] = {
584 "Low", "Medium", "High"
585};
586
587static const struct soc_enum drc_smoothing =
588 SOC_ENUM_SINGLE(WM8903_DRC_0, 11, 3, drc_smoothing_text);
589
590static const char *soft_mute_text[] = {
591 "Fast (fs/2)", "Slow (fs/32)"
592};
593
594static const struct soc_enum soft_mute =
595 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_1, 10, 2, soft_mute_text);
596
597static const char *mute_mode_text[] = {
598 "Hard", "Soft"
599};
600
601static const struct soc_enum mute_mode =
602 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_1, 9, 2, mute_mode_text);
603
604static const char *dac_deemphasis_text[] = {
605 "Disabled", "32kHz", "44.1kHz", "48kHz"
606};
607
608static const struct soc_enum dac_deemphasis =
609 SOC_ENUM_SINGLE(WM8903_DAC_DIGITAL_1, 1, 4, dac_deemphasis_text);
610
611static const char *companding_text[] = {
612 "ulaw", "alaw"
613};
614
615static const struct soc_enum dac_companding =
616 SOC_ENUM_SINGLE(WM8903_AUDIO_INTERFACE_0, 0, 2, companding_text);
617
618static const struct soc_enum adc_companding =
619 SOC_ENUM_SINGLE(WM8903_AUDIO_INTERFACE_0, 2, 2, companding_text);
620
621static const char *input_mode_text[] = {
622 "Single-Ended", "Differential Line", "Differential Mic"
623};
624
625static const struct soc_enum linput_mode_enum =
626 SOC_ENUM_SINGLE(WM8903_ANALOGUE_LEFT_INPUT_1, 0, 3, input_mode_text);
627
628static const struct soc_enum rinput_mode_enum =
629 SOC_ENUM_SINGLE(WM8903_ANALOGUE_RIGHT_INPUT_1, 0, 3, input_mode_text);
630
631static const char *linput_mux_text[] = {
632 "IN1L", "IN2L", "IN3L"
633};
634
635static const struct soc_enum linput_enum =
636 SOC_ENUM_SINGLE(WM8903_ANALOGUE_LEFT_INPUT_1, 2, 3, linput_mux_text);
637
638static const struct soc_enum linput_inv_enum =
639 SOC_ENUM_SINGLE(WM8903_ANALOGUE_LEFT_INPUT_1, 4, 3, linput_mux_text);
640
641static const char *rinput_mux_text[] = {
642 "IN1R", "IN2R", "IN3R"
643};
644
645static const struct soc_enum rinput_enum =
646 SOC_ENUM_SINGLE(WM8903_ANALOGUE_RIGHT_INPUT_1, 2, 3, rinput_mux_text);
647
648static const struct soc_enum rinput_inv_enum =
649 SOC_ENUM_SINGLE(WM8903_ANALOGUE_RIGHT_INPUT_1, 4, 3, rinput_mux_text);
650
651
652static const struct snd_kcontrol_new wm8903_snd_controls[] = {
653
654/* Input PGAs - No TLV since the scale depends on PGA mode */
655SOC_SINGLE("Left Input PGA Switch", WM8903_ANALOGUE_LEFT_INPUT_0,
656 7, 1, 0),
657SOC_SINGLE("Left Input PGA Volume", WM8903_ANALOGUE_LEFT_INPUT_0,
658 0, 31, 0),
659SOC_SINGLE("Left Input PGA Common Mode Switch", WM8903_ANALOGUE_LEFT_INPUT_1,
660 6, 1, 0),
661
662SOC_SINGLE("Right Input PGA Switch", WM8903_ANALOGUE_RIGHT_INPUT_0,
663 7, 1, 0),
664SOC_SINGLE("Right Input PGA Volume", WM8903_ANALOGUE_RIGHT_INPUT_0,
665 0, 31, 0),
666SOC_SINGLE("Right Input PGA Common Mode Switch", WM8903_ANALOGUE_RIGHT_INPUT_1,
667 6, 1, 0),
668
669/* ADCs */
670SOC_SINGLE("DRC Switch", WM8903_DRC_0, 15, 1, 0),
671SOC_ENUM("DRC Compressor Slope R0", drc_slope_r0),
672SOC_ENUM("DRC Compressor Slope R1", drc_slope_r1),
673SOC_SINGLE_TLV("DRC Compressor Threashold Volume", WM8903_DRC_3, 5, 124, 1,
674 drc_tlv_thresh),
675SOC_SINGLE_TLV("DRC Volume", WM8903_DRC_3, 0, 30, 1, drc_tlv_amp),
676SOC_SINGLE_TLV("DRC Minimum Gain Volume", WM8903_DRC_1, 2, 3, 1, drc_tlv_min),
677SOC_SINGLE_TLV("DRC Maximum Gain Volume", WM8903_DRC_1, 0, 3, 0, drc_tlv_max),
678SOC_ENUM("DRC Attack Rate", drc_attack),
679SOC_ENUM("DRC Decay Rate", drc_decay),
680SOC_ENUM("DRC FF Delay", drc_ff_delay),
681SOC_SINGLE("DRC Anticlip Switch", WM8903_DRC_0, 1, 1, 0),
682SOC_SINGLE("DRC QR Switch", WM8903_DRC_0, 2, 1, 0),
683SOC_SINGLE_TLV("DRC QR Threashold Volume", WM8903_DRC_0, 6, 3, 0, drc_tlv_max),
684SOC_ENUM("DRC QR Decay Rate", drc_qr_decay),
685SOC_SINGLE("DRC Smoothing Switch", WM8903_DRC_0, 3, 1, 0),
686SOC_SINGLE("DRC Smoothing Hysteresis Switch", WM8903_DRC_0, 0, 1, 0),
687SOC_ENUM("DRC Smoothing Threashold", drc_smoothing),
688SOC_SINGLE_TLV("DRC Startup Volume", WM8903_DRC_0, 6, 18, 0, drc_tlv_startup),
689
690SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8903_ADC_DIGITAL_VOLUME_LEFT,
691 WM8903_ADC_DIGITAL_VOLUME_RIGHT, 1, 96, 0, digital_tlv),
692SOC_ENUM("ADC Companding Mode", adc_companding),
693SOC_SINGLE("ADC Companding Switch", WM8903_AUDIO_INTERFACE_0, 3, 1, 0),
694
695/* DAC */
696SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8903_DAC_DIGITAL_VOLUME_LEFT,
697 WM8903_DAC_DIGITAL_VOLUME_RIGHT, 1, 120, 0, digital_tlv),
698SOC_ENUM("DAC Soft Mute Rate", soft_mute),
699SOC_ENUM("DAC Mute Mode", mute_mode),
700SOC_SINGLE("DAC Mono Switch", WM8903_DAC_DIGITAL_1, 12, 1, 0),
701SOC_ENUM("DAC De-emphasis", dac_deemphasis),
702SOC_SINGLE("DAC Sloping Stopband Filter Switch",
703 WM8903_DAC_DIGITAL_1, 11, 1, 0),
704SOC_ENUM("DAC Companding Mode", dac_companding),
705SOC_SINGLE("DAC Companding Switch", WM8903_AUDIO_INTERFACE_0, 1, 1, 0),
706
707/* Headphones */
708SOC_DOUBLE_R("Headphone Switch",
709 WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
710 8, 1, 1),
711SOC_DOUBLE_R("Headphone ZC Switch",
712 WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
713 6, 1, 0),
714SOC_DOUBLE_R_TLV("Headphone Volume",
715 WM8903_ANALOGUE_OUT1_LEFT, WM8903_ANALOGUE_OUT1_RIGHT,
716 0, 63, 0, out_tlv),
717
718/* Line out */
719SOC_DOUBLE_R("Line Out Switch",
720 WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
721 8, 1, 1),
722SOC_DOUBLE_R("Line Out ZC Switch",
723 WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
724 6, 1, 0),
725SOC_DOUBLE_R_TLV("Line Out Volume",
726 WM8903_ANALOGUE_OUT2_LEFT, WM8903_ANALOGUE_OUT2_RIGHT,
727 0, 63, 0, out_tlv),
728
729/* Speaker */
730SOC_DOUBLE_R("Speaker Switch",
731 WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT, 8, 1, 1),
732SOC_DOUBLE_R("Speaker ZC Switch",
733 WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT, 6, 1, 0),
734SOC_DOUBLE_R_TLV("Speaker Volume",
735 WM8903_ANALOGUE_OUT3_LEFT, WM8903_ANALOGUE_OUT3_RIGHT,
736 0, 63, 0, out_tlv),
737};
738
739static int wm8903_add_controls(struct snd_soc_codec *codec)
740{
741 int err, i;
742
743 for (i = 0; i < ARRAY_SIZE(wm8903_snd_controls); i++) {
744 err = snd_ctl_add(codec->card,
745 snd_soc_cnew(&wm8903_snd_controls[i],
746 codec, NULL));
747 if (err < 0)
748 return err;
749 }
750
751 return 0;
752}
753
754static const struct snd_kcontrol_new linput_mode_mux =
755 SOC_DAPM_ENUM("Left Input Mode Mux", linput_mode_enum);
756
757static const struct snd_kcontrol_new rinput_mode_mux =
758 SOC_DAPM_ENUM("Right Input Mode Mux", rinput_mode_enum);
759
760static const struct snd_kcontrol_new linput_mux =
761 SOC_DAPM_ENUM("Left Input Mux", linput_enum);
762
763static const struct snd_kcontrol_new linput_inv_mux =
764 SOC_DAPM_ENUM("Left Inverting Input Mux", linput_inv_enum);
765
766static const struct snd_kcontrol_new rinput_mux =
767 SOC_DAPM_ENUM("Right Input Mux", rinput_enum);
768
769static const struct snd_kcontrol_new rinput_inv_mux =
770 SOC_DAPM_ENUM("Right Inverting Input Mux", rinput_inv_enum);
771
772static const struct snd_kcontrol_new left_output_mixer[] = {
773SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_LEFT_MIX_0, 3, 1, 0),
774SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_LEFT_MIX_0, 2, 1, 0),
775SOC_DAPM_SINGLE_W("Left Bypass Switch", WM8903_ANALOGUE_LEFT_MIX_0, 1, 1, 0),
776SOC_DAPM_SINGLE_W("Right Bypass Switch", WM8903_ANALOGUE_LEFT_MIX_0, 1, 1, 0),
777};
778
779static const struct snd_kcontrol_new right_output_mixer[] = {
780SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 3, 1, 0),
781SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 2, 1, 0),
782SOC_DAPM_SINGLE_W("Left Bypass Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 1, 1, 0),
783SOC_DAPM_SINGLE_W("Right Bypass Switch", WM8903_ANALOGUE_RIGHT_MIX_0, 1, 1, 0),
784};
785
786static const struct snd_kcontrol_new left_speaker_mixer[] = {
787SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 3, 1, 0),
788SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 2, 1, 0),
789SOC_DAPM_SINGLE("Left Bypass Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0, 1, 1, 0),
790SOC_DAPM_SINGLE("Right Bypass Switch", WM8903_ANALOGUE_SPK_MIX_LEFT_0,
791 1, 1, 0),
792};
793
794static const struct snd_kcontrol_new right_speaker_mixer[] = {
795SOC_DAPM_SINGLE("DACL Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0, 3, 1, 0),
796SOC_DAPM_SINGLE("DACR Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0, 2, 1, 0),
797SOC_DAPM_SINGLE("Left Bypass Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0,
798 1, 1, 0),
799SOC_DAPM_SINGLE("Right Bypass Switch", WM8903_ANALOGUE_SPK_MIX_RIGHT_0,
800 1, 1, 0),
801};
802
803static const struct snd_soc_dapm_widget wm8903_dapm_widgets[] = {
804SND_SOC_DAPM_INPUT("IN1L"),
805SND_SOC_DAPM_INPUT("IN1R"),
806SND_SOC_DAPM_INPUT("IN2L"),
807SND_SOC_DAPM_INPUT("IN2R"),
808SND_SOC_DAPM_INPUT("IN3L"),
809SND_SOC_DAPM_INPUT("IN3R"),
810
811SND_SOC_DAPM_OUTPUT("HPOUTL"),
812SND_SOC_DAPM_OUTPUT("HPOUTR"),
813SND_SOC_DAPM_OUTPUT("LINEOUTL"),
814SND_SOC_DAPM_OUTPUT("LINEOUTR"),
815SND_SOC_DAPM_OUTPUT("LOP"),
816SND_SOC_DAPM_OUTPUT("LON"),
817SND_SOC_DAPM_OUTPUT("ROP"),
818SND_SOC_DAPM_OUTPUT("RON"),
819
820SND_SOC_DAPM_MICBIAS("Mic Bias", WM8903_MIC_BIAS_CONTROL_0, 0, 0),
821
822SND_SOC_DAPM_MUX("Left Input Mux", SND_SOC_NOPM, 0, 0, &linput_mux),
823SND_SOC_DAPM_MUX("Left Input Inverting Mux", SND_SOC_NOPM, 0, 0,
824 &linput_inv_mux),
825SND_SOC_DAPM_MUX("Left Input Mode Mux", SND_SOC_NOPM, 0, 0, &linput_mode_mux),
826
827SND_SOC_DAPM_MUX("Right Input Mux", SND_SOC_NOPM, 0, 0, &rinput_mux),
828SND_SOC_DAPM_MUX("Right Input Inverting Mux", SND_SOC_NOPM, 0, 0,
829 &rinput_inv_mux),
830SND_SOC_DAPM_MUX("Right Input Mode Mux", SND_SOC_NOPM, 0, 0, &rinput_mode_mux),
831
832SND_SOC_DAPM_PGA("Left Input PGA", WM8903_POWER_MANAGEMENT_0, 1, 0, NULL, 0),
833SND_SOC_DAPM_PGA("Right Input PGA", WM8903_POWER_MANAGEMENT_0, 0, 0, NULL, 0),
834
835SND_SOC_DAPM_ADC("ADCL", "Left HiFi Capture", WM8903_POWER_MANAGEMENT_6, 1, 0),
836SND_SOC_DAPM_ADC("ADCR", "Right HiFi Capture", WM8903_POWER_MANAGEMENT_6, 0, 0),
837
838SND_SOC_DAPM_DAC("DACL", "Left Playback", WM8903_POWER_MANAGEMENT_6, 3, 0),
839SND_SOC_DAPM_DAC("DACR", "Right Playback", WM8903_POWER_MANAGEMENT_6, 2, 0),
840
841SND_SOC_DAPM_MIXER("Left Output Mixer", WM8903_POWER_MANAGEMENT_1, 1, 0,
842 left_output_mixer, ARRAY_SIZE(left_output_mixer)),
843SND_SOC_DAPM_MIXER("Right Output Mixer", WM8903_POWER_MANAGEMENT_1, 0, 0,
844 right_output_mixer, ARRAY_SIZE(right_output_mixer)),
845
846SND_SOC_DAPM_MIXER("Left Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 1, 0,
847 left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
848SND_SOC_DAPM_MIXER("Right Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 0, 0,
849 right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
850
851SND_SOC_DAPM_PGA_E("Left Headphone Output PGA", WM8903_POWER_MANAGEMENT_2,
852 1, 0, NULL, 0, wm8903_output_event,
853 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
854 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
855SND_SOC_DAPM_PGA_E("Right Headphone Output PGA", WM8903_POWER_MANAGEMENT_2,
856 0, 0, NULL, 0, wm8903_output_event,
857 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
858 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
859
860SND_SOC_DAPM_PGA_E("Left Line Output PGA", WM8903_POWER_MANAGEMENT_3, 1, 0,
861 NULL, 0, wm8903_output_event,
862 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
863 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
864SND_SOC_DAPM_PGA_E("Right Line Output PGA", WM8903_POWER_MANAGEMENT_3, 0, 0,
865 NULL, 0, wm8903_output_event,
866 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
867 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
868
869SND_SOC_DAPM_PGA("Left Speaker PGA", WM8903_POWER_MANAGEMENT_5, 1, 0,
870 NULL, 0),
871SND_SOC_DAPM_PGA("Right Speaker PGA", WM8903_POWER_MANAGEMENT_5, 0, 0,
872 NULL, 0),
873
874};
875
876static const struct snd_soc_dapm_route intercon[] = {
877
878 { "Left Input Mux", "IN1L", "IN1L" },
879 { "Left Input Mux", "IN2L", "IN2L" },
880 { "Left Input Mux", "IN3L", "IN3L" },
881
882 { "Left Input Inverting Mux", "IN1L", "IN1L" },
883 { "Left Input Inverting Mux", "IN2L", "IN2L" },
884 { "Left Input Inverting Mux", "IN3L", "IN3L" },
885
886 { "Right Input Mux", "IN1R", "IN1R" },
887 { "Right Input Mux", "IN2R", "IN2R" },
888 { "Right Input Mux", "IN3R", "IN3R" },
889
890 { "Right Input Inverting Mux", "IN1R", "IN1R" },
891 { "Right Input Inverting Mux", "IN2R", "IN2R" },
892 { "Right Input Inverting Mux", "IN3R", "IN3R" },
893
894 { "Left Input Mode Mux", "Single-Ended", "Left Input Inverting Mux" },
895 { "Left Input Mode Mux", "Differential Line",
896 "Left Input Mux" },
897 { "Left Input Mode Mux", "Differential Line",
898 "Left Input Inverting Mux" },
899 { "Left Input Mode Mux", "Differential Mic",
900 "Left Input Mux" },
901 { "Left Input Mode Mux", "Differential Mic",
902 "Left Input Inverting Mux" },
903
904 { "Right Input Mode Mux", "Single-Ended",
905 "Right Input Inverting Mux" },
906 { "Right Input Mode Mux", "Differential Line",
907 "Right Input Mux" },
908 { "Right Input Mode Mux", "Differential Line",
909 "Right Input Inverting Mux" },
910 { "Right Input Mode Mux", "Differential Mic",
911 "Right Input Mux" },
912 { "Right Input Mode Mux", "Differential Mic",
913 "Right Input Inverting Mux" },
914
915 { "Left Input PGA", NULL, "Left Input Mode Mux" },
916 { "Right Input PGA", NULL, "Right Input Mode Mux" },
917
918 { "ADCL", NULL, "Left Input PGA" },
919 { "ADCR", NULL, "Right Input PGA" },
920
921 { "Left Output Mixer", "Left Bypass Switch", "Left Input PGA" },
922 { "Left Output Mixer", "Right Bypass Switch", "Right Input PGA" },
923 { "Left Output Mixer", "DACL Switch", "DACL" },
924 { "Left Output Mixer", "DACR Switch", "DACR" },
925
926 { "Right Output Mixer", "Left Bypass Switch", "Left Input PGA" },
927 { "Right Output Mixer", "Right Bypass Switch", "Right Input PGA" },
928 { "Right Output Mixer", "DACL Switch", "DACL" },
929 { "Right Output Mixer", "DACR Switch", "DACR" },
930
931 { "Left Speaker Mixer", "Left Bypass Switch", "Left Input PGA" },
932 { "Left Speaker Mixer", "Right Bypass Switch", "Right Input PGA" },
933 { "Left Speaker Mixer", "DACL Switch", "DACL" },
934 { "Left Speaker Mixer", "DACR Switch", "DACR" },
935
936 { "Right Speaker Mixer", "Left Bypass Switch", "Left Input PGA" },
937 { "Right Speaker Mixer", "Right Bypass Switch", "Right Input PGA" },
938 { "Right Speaker Mixer", "DACL Switch", "DACL" },
939 { "Right Speaker Mixer", "DACR Switch", "DACR" },
940
941 { "Left Line Output PGA", NULL, "Left Output Mixer" },
942 { "Right Line Output PGA", NULL, "Right Output Mixer" },
943
944 { "Left Headphone Output PGA", NULL, "Left Output Mixer" },
945 { "Right Headphone Output PGA", NULL, "Right Output Mixer" },
946
947 { "Left Speaker PGA", NULL, "Left Speaker Mixer" },
948 { "Right Speaker PGA", NULL, "Right Speaker Mixer" },
949
950 { "HPOUTL", NULL, "Left Headphone Output PGA" },
951 { "HPOUTR", NULL, "Right Headphone Output PGA" },
952
953 { "LINEOUTL", NULL, "Left Line Output PGA" },
954 { "LINEOUTR", NULL, "Right Line Output PGA" },
955
956 { "LOP", NULL, "Left Speaker PGA" },
957 { "LON", NULL, "Left Speaker PGA" },
958
959 { "ROP", NULL, "Right Speaker PGA" },
960 { "RON", NULL, "Right Speaker PGA" },
961};
962
963static int wm8903_add_widgets(struct snd_soc_codec *codec)
964{
965 snd_soc_dapm_new_controls(codec, wm8903_dapm_widgets,
966 ARRAY_SIZE(wm8903_dapm_widgets));
967
968 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
969
970 snd_soc_dapm_new_widgets(codec);
971
972 return 0;
973}
974
975static int wm8903_set_bias_level(struct snd_soc_codec *codec,
976 enum snd_soc_bias_level level)
977{
978 struct i2c_client *i2c = codec->control_data;
979 u16 reg, reg2;
980
981 switch (level) {
982 case SND_SOC_BIAS_ON:
983 case SND_SOC_BIAS_PREPARE:
984 reg = wm8903_read(codec, WM8903_VMID_CONTROL_0);
985 reg &= ~(WM8903_VMID_RES_MASK);
986 reg |= WM8903_VMID_RES_50K;
987 wm8903_write(codec, WM8903_VMID_CONTROL_0, reg);
988 break;
989
990 case SND_SOC_BIAS_STANDBY:
991 if (codec->bias_level == SND_SOC_BIAS_OFF) {
992 wm8903_run_sequence(codec, 0);
993 wm8903_sync_reg_cache(codec, codec->reg_cache);
994
995 /* Enable low impedence charge pump output */
996 reg = wm8903_read(codec,
997 WM8903_CONTROL_INTERFACE_TEST_1);
998 wm8903_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
999 reg | WM8903_TEST_KEY);
1000 reg2 = wm8903_read(codec, WM8903_CHARGE_PUMP_TEST_1);
1001 wm8903_write(codec, WM8903_CHARGE_PUMP_TEST_1,
1002 reg2 | WM8903_CP_SW_KELVIN_MODE_MASK);
1003 wm8903_write(codec, WM8903_CONTROL_INTERFACE_TEST_1,
1004 reg);
1005
1006 /* By default no bypass paths are enabled so
1007 * enable Class W support.
1008 */
1009 dev_dbg(&i2c->dev, "Enabling Class W\n");
1010 wm8903_write(codec, WM8903_CLASS_W_0, reg |
1011 WM8903_CP_DYN_FREQ | WM8903_CP_DYN_V);
1012 }
1013
1014 reg = wm8903_read(codec, WM8903_VMID_CONTROL_0);
1015 reg &= ~(WM8903_VMID_RES_MASK);
1016 reg |= WM8903_VMID_RES_250K;
1017 wm8903_write(codec, WM8903_VMID_CONTROL_0, reg);
1018 break;
1019
1020 case SND_SOC_BIAS_OFF:
1021 wm8903_run_sequence(codec, 32);
1022 break;
1023 }
1024
1025 codec->bias_level = level;
1026
1027 return 0;
1028}
1029
1030static int wm8903_set_dai_sysclk(struct snd_soc_dai *codec_dai,
1031 int clk_id, unsigned int freq, int dir)
1032{
1033 struct snd_soc_codec *codec = codec_dai->codec;
1034 struct wm8903_priv *wm8903 = codec->private_data;
1035
1036 wm8903->sysclk = freq;
1037
1038 return 0;
1039}
1040
1041static int wm8903_set_dai_fmt(struct snd_soc_dai *codec_dai,
1042 unsigned int fmt)
1043{
1044 struct snd_soc_codec *codec = codec_dai->codec;
1045 u16 aif1 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_1);
1046
1047 aif1 &= ~(WM8903_LRCLK_DIR | WM8903_BCLK_DIR | WM8903_AIF_FMT_MASK |
1048 WM8903_AIF_LRCLK_INV | WM8903_AIF_BCLK_INV);
1049
1050 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1051 case SND_SOC_DAIFMT_CBS_CFS:
1052 break;
1053 case SND_SOC_DAIFMT_CBS_CFM:
1054 aif1 |= WM8903_LRCLK_DIR;
1055 break;
1056 case SND_SOC_DAIFMT_CBM_CFM:
1057 aif1 |= WM8903_LRCLK_DIR | WM8903_BCLK_DIR;
1058 break;
1059 case SND_SOC_DAIFMT_CBM_CFS:
1060 aif1 |= WM8903_BCLK_DIR;
1061 break;
1062 default:
1063 return -EINVAL;
1064 }
1065
1066 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1067 case SND_SOC_DAIFMT_DSP_A:
1068 aif1 |= 0x3;
1069 break;
1070 case SND_SOC_DAIFMT_DSP_B:
1071 aif1 |= 0x3 | WM8903_AIF_LRCLK_INV;
1072 break;
1073 case SND_SOC_DAIFMT_I2S:
1074 aif1 |= 0x2;
1075 break;
1076 case SND_SOC_DAIFMT_RIGHT_J:
1077 aif1 |= 0x1;
1078 break;
1079 case SND_SOC_DAIFMT_LEFT_J:
1080 break;
1081 default:
1082 return -EINVAL;
1083 }
1084
1085 /* Clock inversion */
1086 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1087 case SND_SOC_DAIFMT_DSP_A:
1088 case SND_SOC_DAIFMT_DSP_B:
1089 /* frame inversion not valid for DSP modes */
1090 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1091 case SND_SOC_DAIFMT_NB_NF:
1092 break;
1093 case SND_SOC_DAIFMT_IB_NF:
1094 aif1 |= WM8903_AIF_BCLK_INV;
1095 break;
1096 default:
1097 return -EINVAL;
1098 }
1099 break;
1100 case SND_SOC_DAIFMT_I2S:
1101 case SND_SOC_DAIFMT_RIGHT_J:
1102 case SND_SOC_DAIFMT_LEFT_J:
1103 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1104 case SND_SOC_DAIFMT_NB_NF:
1105 break;
1106 case SND_SOC_DAIFMT_IB_IF:
1107 aif1 |= WM8903_AIF_BCLK_INV | WM8903_AIF_LRCLK_INV;
1108 break;
1109 case SND_SOC_DAIFMT_IB_NF:
1110 aif1 |= WM8903_AIF_BCLK_INV;
1111 break;
1112 case SND_SOC_DAIFMT_NB_IF:
1113 aif1 |= WM8903_AIF_LRCLK_INV;
1114 break;
1115 default:
1116 return -EINVAL;
1117 }
1118 break;
1119 default:
1120 return -EINVAL;
1121 }
1122
1123 wm8903_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
1124
1125 return 0;
1126}
1127
1128static int wm8903_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1129{
1130 struct snd_soc_codec *codec = codec_dai->codec;
1131 u16 reg;
1132
1133 reg = wm8903_read(codec, WM8903_DAC_DIGITAL_1);
1134
1135 if (mute)
1136 reg |= WM8903_DAC_MUTE;
1137 else
1138 reg &= ~WM8903_DAC_MUTE;
1139
1140 wm8903_write(codec, WM8903_DAC_DIGITAL_1, reg);
1141
1142 return 0;
1143}
1144
1145/* Lookup table for CLK_SYS/fs ratio. 256fs or more is recommended
1146 * for optimal performance so we list the lower rates first and match
1147 * on the last match we find. */
1148static struct {
1149 int div;
1150 int rate;
1151 int mode;
1152 int mclk_div;
1153} clk_sys_ratios[] = {
1154 { 64, 0x0, 0x0, 1 },
1155 { 68, 0x0, 0x1, 1 },
1156 { 125, 0x0, 0x2, 1 },
1157 { 128, 0x1, 0x0, 1 },
1158 { 136, 0x1, 0x1, 1 },
1159 { 192, 0x2, 0x0, 1 },
1160 { 204, 0x2, 0x1, 1 },
1161
1162 { 64, 0x0, 0x0, 2 },
1163 { 68, 0x0, 0x1, 2 },
1164 { 125, 0x0, 0x2, 2 },
1165 { 128, 0x1, 0x0, 2 },
1166 { 136, 0x1, 0x1, 2 },
1167 { 192, 0x2, 0x0, 2 },
1168 { 204, 0x2, 0x1, 2 },
1169
1170 { 250, 0x2, 0x2, 1 },
1171 { 256, 0x3, 0x0, 1 },
1172 { 272, 0x3, 0x1, 1 },
1173 { 384, 0x4, 0x0, 1 },
1174 { 408, 0x4, 0x1, 1 },
1175 { 375, 0x4, 0x2, 1 },
1176 { 512, 0x5, 0x0, 1 },
1177 { 544, 0x5, 0x1, 1 },
1178 { 500, 0x5, 0x2, 1 },
1179 { 768, 0x6, 0x0, 1 },
1180 { 816, 0x6, 0x1, 1 },
1181 { 750, 0x6, 0x2, 1 },
1182 { 1024, 0x7, 0x0, 1 },
1183 { 1088, 0x7, 0x1, 1 },
1184 { 1000, 0x7, 0x2, 1 },
1185 { 1408, 0x8, 0x0, 1 },
1186 { 1496, 0x8, 0x1, 1 },
1187 { 1536, 0x9, 0x0, 1 },
1188 { 1632, 0x9, 0x1, 1 },
1189 { 1500, 0x9, 0x2, 1 },
1190
1191 { 250, 0x2, 0x2, 2 },
1192 { 256, 0x3, 0x0, 2 },
1193 { 272, 0x3, 0x1, 2 },
1194 { 384, 0x4, 0x0, 2 },
1195 { 408, 0x4, 0x1, 2 },
1196 { 375, 0x4, 0x2, 2 },
1197 { 512, 0x5, 0x0, 2 },
1198 { 544, 0x5, 0x1, 2 },
1199 { 500, 0x5, 0x2, 2 },
1200 { 768, 0x6, 0x0, 2 },
1201 { 816, 0x6, 0x1, 2 },
1202 { 750, 0x6, 0x2, 2 },
1203 { 1024, 0x7, 0x0, 2 },
1204 { 1088, 0x7, 0x1, 2 },
1205 { 1000, 0x7, 0x2, 2 },
1206 { 1408, 0x8, 0x0, 2 },
1207 { 1496, 0x8, 0x1, 2 },
1208 { 1536, 0x9, 0x0, 2 },
1209 { 1632, 0x9, 0x1, 2 },
1210 { 1500, 0x9, 0x2, 2 },
1211};
1212
1213/* CLK_SYS/BCLK ratios - multiplied by 10 due to .5s */
1214static struct {
1215 int ratio;
1216 int div;
1217} bclk_divs[] = {
1218 { 10, 0 },
1219 { 15, 1 },
1220 { 20, 2 },
1221 { 30, 3 },
1222 { 40, 4 },
1223 { 50, 5 },
1224 { 55, 6 },
1225 { 60, 7 },
1226 { 80, 8 },
1227 { 100, 9 },
1228 { 110, 10 },
1229 { 120, 11 },
1230 { 160, 12 },
1231 { 200, 13 },
1232 { 220, 14 },
1233 { 240, 15 },
1234 { 250, 16 },
1235 { 300, 17 },
1236 { 320, 18 },
1237 { 440, 19 },
1238 { 480, 20 },
1239};
1240
1241/* Sample rates for DSP */
1242static struct {
1243 int rate;
1244 int value;
1245} sample_rates[] = {
1246 { 8000, 0 },
1247 { 11025, 1 },
1248 { 12000, 2 },
1249 { 16000, 3 },
1250 { 22050, 4 },
1251 { 24000, 5 },
1252 { 32000, 6 },
1253 { 44100, 7 },
1254 { 48000, 8 },
1255 { 88200, 9 },
1256 { 96000, 10 },
1257 { 0, 0 },
1258};
1259
1260static int wm8903_startup(struct snd_pcm_substream *substream)
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->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
1301static void wm8903_shutdown(struct snd_pcm_substream *substream)
1302{
1303 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1304 struct snd_soc_device *socdev = rtd->socdev;
1305 struct snd_soc_codec *codec = socdev->codec;
1306 struct wm8903_priv *wm8903 = codec->private_data;
1307
1308 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1309 wm8903->playback_active--;
1310 else
1311 wm8903->capture_active--;
1312
1313 if (wm8903->master_substream == substream)
1314 wm8903->master_substream = wm8903->slave_substream;
1315
1316 wm8903->slave_substream = NULL;
1317}
1318
1319static int wm8903_hw_params(struct snd_pcm_substream *substream,
1320 struct snd_pcm_hw_params *params)
1321{
1322 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1323 struct snd_soc_device *socdev = rtd->socdev;
1324 struct snd_soc_codec *codec = socdev->codec;
1325 struct wm8903_priv *wm8903 = codec->private_data;
1326 struct i2c_client *i2c = codec->control_data;
1327 int fs = params_rate(params);
1328 int bclk;
1329 int bclk_div;
1330 int i;
1331 int dsp_config;
1332 int clk_config;
1333 int best_val;
1334 int cur_val;
1335 int clk_sys;
1336
1337 u16 aif1 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_1);
1338 u16 aif2 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_2);
1339 u16 aif3 = wm8903_read(codec, WM8903_AUDIO_INTERFACE_3);
1340 u16 clock0 = wm8903_read(codec, WM8903_CLOCK_RATES_0);
1341 u16 clock1 = wm8903_read(codec, WM8903_CLOCK_RATES_1);
1342
1343 if (substream == wm8903->slave_substream) {
1344 dev_dbg(&i2c->dev, "Ignoring hw_params for slave substream\n");
1345 return 0;
1346 }
1347
1348 /* Configure sample rate logic for DSP - choose nearest rate */
1349 dsp_config = 0;
1350 best_val = abs(sample_rates[dsp_config].rate - fs);
1351 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1352 cur_val = abs(sample_rates[i].rate - fs);
1353 if (cur_val <= best_val) {
1354 dsp_config = i;
1355 best_val = cur_val;
1356 }
1357 }
1358
1359 /* Constraints should stop us hitting this but let's make sure */
1360 if (wm8903->capture_active)
1361 switch (sample_rates[dsp_config].rate) {
1362 case 88200:
1363 case 96000:
1364 dev_err(&i2c->dev, "%dHz unsupported by ADC\n",
1365 fs);
1366 return -EINVAL;
1367
1368 default:
1369 break;
1370 }
1371
1372 dev_dbg(&i2c->dev, "DSP fs = %dHz\n", sample_rates[dsp_config].rate);
1373 clock1 &= ~WM8903_SAMPLE_RATE_MASK;
1374 clock1 |= sample_rates[dsp_config].value;
1375
1376 aif1 &= ~WM8903_AIF_WL_MASK;
1377 bclk = 2 * fs;
1378 switch (params_format(params)) {
1379 case SNDRV_PCM_FORMAT_S16_LE:
1380 bclk *= 16;
1381 break;
1382 case SNDRV_PCM_FORMAT_S20_3LE:
1383 bclk *= 20;
1384 aif1 |= 0x4;
1385 break;
1386 case SNDRV_PCM_FORMAT_S24_LE:
1387 bclk *= 24;
1388 aif1 |= 0x8;
1389 break;
1390 case SNDRV_PCM_FORMAT_S32_LE:
1391 bclk *= 32;
1392 aif1 |= 0xc;
1393 break;
1394 default:
1395 return -EINVAL;
1396 }
1397
1398 dev_dbg(&i2c->dev, "MCLK = %dHz, target sample rate = %dHz\n",
1399 wm8903->sysclk, fs);
1400
1401 /* We may not have an MCLK which allows us to generate exactly
1402 * the clock we want, particularly with USB derived inputs, so
1403 * approximate.
1404 */
1405 clk_config = 0;
1406 best_val = abs((wm8903->sysclk /
1407 (clk_sys_ratios[0].mclk_div *
1408 clk_sys_ratios[0].div)) - fs);
1409 for (i = 1; i < ARRAY_SIZE(clk_sys_ratios); i++) {
1410 cur_val = abs((wm8903->sysclk /
1411 (clk_sys_ratios[i].mclk_div *
1412 clk_sys_ratios[i].div)) - fs);
1413
1414 if (cur_val <= best_val) {
1415 clk_config = i;
1416 best_val = cur_val;
1417 }
1418 }
1419
1420 if (clk_sys_ratios[clk_config].mclk_div == 2) {
1421 clock0 |= WM8903_MCLKDIV2;
1422 clk_sys = wm8903->sysclk / 2;
1423 } else {
1424 clock0 &= ~WM8903_MCLKDIV2;
1425 clk_sys = wm8903->sysclk;
1426 }
1427
1428 clock1 &= ~(WM8903_CLK_SYS_RATE_MASK |
1429 WM8903_CLK_SYS_MODE_MASK);
1430 clock1 |= clk_sys_ratios[clk_config].rate << WM8903_CLK_SYS_RATE_SHIFT;
1431 clock1 |= clk_sys_ratios[clk_config].mode << WM8903_CLK_SYS_MODE_SHIFT;
1432
1433 dev_dbg(&i2c->dev, "CLK_SYS_RATE=%x, CLK_SYS_MODE=%x div=%d\n",
1434 clk_sys_ratios[clk_config].rate,
1435 clk_sys_ratios[clk_config].mode,
1436 clk_sys_ratios[clk_config].div);
1437
1438 dev_dbg(&i2c->dev, "Actual CLK_SYS = %dHz\n", clk_sys);
1439
1440 /* We may not get quite the right frequency if using
1441 * approximate clocks so look for the closest match that is
1442 * higher than the target (we need to ensure that there enough
1443 * BCLKs to clock out the samples).
1444 */
1445 bclk_div = 0;
1446 best_val = ((clk_sys * 10) / bclk_divs[0].ratio) - bclk;
1447 i = 1;
1448 while (i < ARRAY_SIZE(bclk_divs)) {
1449 cur_val = ((clk_sys * 10) / bclk_divs[i].ratio) - bclk;
1450 if (cur_val < 0) /* BCLK table is sorted */
1451 break;
1452 bclk_div = i;
1453 best_val = cur_val;
1454 i++;
1455 }
1456
1457 aif2 &= ~WM8903_BCLK_DIV_MASK;
1458 aif3 &= ~WM8903_LRCLK_RATE_MASK;
1459
1460 dev_dbg(&i2c->dev, "BCLK ratio %d for %dHz - actual BCLK = %dHz\n",
1461 bclk_divs[bclk_div].ratio / 10, bclk,
1462 (clk_sys * 10) / bclk_divs[bclk_div].ratio);
1463
1464 aif2 |= bclk_divs[bclk_div].div;
1465 aif3 |= bclk / fs;
1466
1467 wm8903_write(codec, WM8903_CLOCK_RATES_0, clock0);
1468 wm8903_write(codec, WM8903_CLOCK_RATES_1, clock1);
1469 wm8903_write(codec, WM8903_AUDIO_INTERFACE_1, aif1);
1470 wm8903_write(codec, WM8903_AUDIO_INTERFACE_2, aif2);
1471 wm8903_write(codec, WM8903_AUDIO_INTERFACE_3, aif3);
1472
1473 return 0;
1474}
1475
1476#define WM8903_PLAYBACK_RATES (SNDRV_PCM_RATE_8000 |\
1477 SNDRV_PCM_RATE_11025 | \
1478 SNDRV_PCM_RATE_16000 | \
1479 SNDRV_PCM_RATE_22050 | \
1480 SNDRV_PCM_RATE_32000 | \
1481 SNDRV_PCM_RATE_44100 | \
1482 SNDRV_PCM_RATE_48000 | \
1483 SNDRV_PCM_RATE_88200 | \
1484 SNDRV_PCM_RATE_96000)
1485
1486#define WM8903_CAPTURE_RATES (SNDRV_PCM_RATE_8000 |\
1487 SNDRV_PCM_RATE_11025 | \
1488 SNDRV_PCM_RATE_16000 | \
1489 SNDRV_PCM_RATE_22050 | \
1490 SNDRV_PCM_RATE_32000 | \
1491 SNDRV_PCM_RATE_44100 | \
1492 SNDRV_PCM_RATE_48000)
1493
1494#define WM8903_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
1495 SNDRV_PCM_FMTBIT_S20_3LE |\
1496 SNDRV_PCM_FMTBIT_S24_LE)
1497
1498struct snd_soc_dai wm8903_dai = {
1499 .name = "WM8903",
1500 .playback = {
1501 .stream_name = "Playback",
1502 .channels_min = 2,
1503 .channels_max = 2,
1504 .rates = WM8903_PLAYBACK_RATES,
1505 .formats = WM8903_FORMATS,
1506 },
1507 .capture = {
1508 .stream_name = "Capture",
1509 .channels_min = 2,
1510 .channels_max = 2,
1511 .rates = WM8903_CAPTURE_RATES,
1512 .formats = WM8903_FORMATS,
1513 },
1514 .ops = {
1515 .startup = wm8903_startup,
1516 .shutdown = wm8903_shutdown,
1517 .hw_params = wm8903_hw_params,
1518 },
1519 .dai_ops = {
1520 .digital_mute = wm8903_digital_mute,
1521 .set_fmt = wm8903_set_dai_fmt,
1522 .set_sysclk = wm8903_set_dai_sysclk
1523 }
1524};
1525EXPORT_SYMBOL_GPL(wm8903_dai);
1526
1527static int wm8903_suspend(struct platform_device *pdev, pm_message_t state)
1528{
1529 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1530 struct snd_soc_codec *codec = socdev->codec;
1531
1532 wm8903_set_bias_level(codec, SND_SOC_BIAS_OFF);
1533
1534 return 0;
1535}
1536
1537static int wm8903_resume(struct platform_device *pdev)
1538{
1539 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1540 struct snd_soc_codec *codec = socdev->codec;
1541 struct i2c_client *i2c = codec->control_data;
1542 int i;
1543 u16 *reg_cache = codec->reg_cache;
1544 u16 *tmp_cache = kmemdup(codec->reg_cache, sizeof(wm8903_reg_defaults),
1545 GFP_KERNEL);
1546
1547 /* Bring the codec back up to standby first to minimise pop/clicks */
1548 wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1549 wm8903_set_bias_level(codec, codec->suspend_bias_level);
1550
1551 /* Sync back everything else */
1552 if (tmp_cache) {
1553 for (i = 2; i < ARRAY_SIZE(wm8903_reg_defaults); i++)
1554 if (tmp_cache[i] != reg_cache[i])
1555 wm8903_write(codec, i, tmp_cache[i]);
1556 } else {
1557 dev_err(&i2c->dev, "Failed to allocate temporary cache\n");
1558 }
1559
1560 return 0;
1561}
1562
1563/*
1564 * initialise the WM8903 driver
1565 * register the mixer and dsp interfaces with the kernel
1566 */
1567static int wm8903_init(struct snd_soc_device *socdev)
1568{
1569 struct snd_soc_codec *codec = socdev->codec;
1570 struct i2c_client *i2c = codec->control_data;
1571 int ret = 0;
1572 u16 val;
1573
1574 val = wm8903_hw_read(codec, WM8903_SW_RESET_AND_ID);
1575 if (val != wm8903_reg_defaults[WM8903_SW_RESET_AND_ID]) {
1576 dev_err(&i2c->dev,
1577 "Device with ID register %x is not a WM8903\n", val);
1578 return -ENODEV;
1579 }
1580
1581 codec->name = "WM8903";
1582 codec->owner = THIS_MODULE;
1583 codec->read = wm8903_read;
1584 codec->write = wm8903_write;
1585 codec->bias_level = SND_SOC_BIAS_OFF;
1586 codec->set_bias_level = wm8903_set_bias_level;
1587 codec->dai = &wm8903_dai;
1588 codec->num_dai = 1;
1589 codec->reg_cache_size = ARRAY_SIZE(wm8903_reg_defaults);
1590 codec->reg_cache = kmemdup(wm8903_reg_defaults,
1591 sizeof(wm8903_reg_defaults),
1592 GFP_KERNEL);
1593 if (codec->reg_cache == NULL) {
1594 dev_err(&i2c->dev, "Failed to allocate register cache\n");
1595 return -ENOMEM;
1596 }
1597
1598 val = wm8903_read(codec, WM8903_REVISION_NUMBER);
1599 dev_info(&i2c->dev, "WM8903 revision %d\n",
1600 val & WM8903_CHIP_REV_MASK);
1601
1602 wm8903_reset(codec);
1603
1604 /* register pcms */
1605 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1606 if (ret < 0) {
1607 dev_err(&i2c->dev, "failed to create pcms\n");
1608 goto pcm_err;
1609 }
1610
1611 /* SYSCLK is required for pretty much anything */
1612 wm8903_write(codec, WM8903_CLOCK_RATES_2, WM8903_CLK_SYS_ENA);
1613
1614 /* power on device */
1615 wm8903_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1616
1617 /* Latch volume update bits */
1618 val = wm8903_read(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT);
1619 val |= WM8903_ADCVU;
1620 wm8903_write(codec, WM8903_ADC_DIGITAL_VOLUME_LEFT, val);
1621 wm8903_write(codec, WM8903_ADC_DIGITAL_VOLUME_RIGHT, val);
1622
1623 val = wm8903_read(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT);
1624 val |= WM8903_DACVU;
1625 wm8903_write(codec, WM8903_DAC_DIGITAL_VOLUME_LEFT, val);
1626 wm8903_write(codec, WM8903_DAC_DIGITAL_VOLUME_RIGHT, val);
1627
1628 val = wm8903_read(codec, WM8903_ANALOGUE_OUT1_LEFT);
1629 val |= WM8903_HPOUTVU;
1630 wm8903_write(codec, WM8903_ANALOGUE_OUT1_LEFT, val);
1631 wm8903_write(codec, WM8903_ANALOGUE_OUT1_RIGHT, val);
1632
1633 val = wm8903_read(codec, WM8903_ANALOGUE_OUT2_LEFT);
1634 val |= WM8903_LINEOUTVU;
1635 wm8903_write(codec, WM8903_ANALOGUE_OUT2_LEFT, val);
1636 wm8903_write(codec, WM8903_ANALOGUE_OUT2_RIGHT, val);
1637
1638 val = wm8903_read(codec, WM8903_ANALOGUE_OUT3_LEFT);
1639 val |= WM8903_SPKVU;
1640 wm8903_write(codec, WM8903_ANALOGUE_OUT3_LEFT, val);
1641 wm8903_write(codec, WM8903_ANALOGUE_OUT3_RIGHT, val);
1642
1643 /* Enable DAC soft mute by default */
1644 val = wm8903_read(codec, WM8903_DAC_DIGITAL_1);
1645 val |= WM8903_DAC_MUTEMODE;
1646 wm8903_write(codec, WM8903_DAC_DIGITAL_1, val);
1647
1648 wm8903_add_controls(codec);
1649 wm8903_add_widgets(codec);
1650 ret = snd_soc_register_card(socdev);
1651 if (ret < 0) {
1652 dev_err(&i2c->dev, "wm8903: failed to register card\n");
1653 goto card_err;
1654 }
1655
1656 return ret;
1657
1658card_err:
1659 snd_soc_free_pcms(socdev);
1660 snd_soc_dapm_free(socdev);
1661pcm_err:
1662 kfree(codec->reg_cache);
1663 return ret;
1664}
1665
1666static struct snd_soc_device *wm8903_socdev;
1667
1668static int wm8903_i2c_probe(struct i2c_client *i2c,
1669 const struct i2c_device_id *id)
1670{
1671 struct snd_soc_device *socdev = wm8903_socdev;
1672 struct snd_soc_codec *codec = socdev->codec;
1673 int ret;
1674
1675 i2c_set_clientdata(i2c, codec);
1676 codec->control_data = i2c;
1677
1678 ret = wm8903_init(socdev);
1679 if (ret < 0)
1680 dev_err(&i2c->dev, "Device initialisation failed\n");
1681
1682 return ret;
1683}
1684
1685static int wm8903_i2c_remove(struct i2c_client *client)
1686{
1687 struct snd_soc_codec *codec = i2c_get_clientdata(client);
1688 kfree(codec->reg_cache);
1689 return 0;
1690}
1691
1692/* i2c codec control layer */
1693static const struct i2c_device_id wm8903_i2c_id[] = {
1694 { "wm8903", 0 },
1695 { }
1696};
1697MODULE_DEVICE_TABLE(i2c, wm8903_i2c_id);
1698
1699static struct i2c_driver wm8903_i2c_driver = {
1700 .driver = {
1701 .name = "WM8903",
1702 .owner = THIS_MODULE,
1703 },
1704 .probe = wm8903_i2c_probe,
1705 .remove = wm8903_i2c_remove,
1706 .id_table = wm8903_i2c_id,
1707};
1708
1709static struct i2c_client *wm8903_i2c_device;
1710
1711static int wm8903_probe(struct platform_device *pdev)
1712{
1713 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1714 struct wm8903_setup_data *setup;
1715 struct snd_soc_codec *codec;
1716 struct wm8903_priv *wm8903;
1717 struct i2c_board_info board_info;
1718 struct i2c_adapter *adapter;
1719 int ret = 0;
1720
1721 setup = socdev->codec_data;
1722
1723 if (!setup->i2c_address) {
1724 dev_err(&pdev->dev, "No codec address provided\n");
1725 return -ENODEV;
1726 }
1727
1728 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
1729 if (codec == NULL)
1730 return -ENOMEM;
1731
1732 wm8903 = kzalloc(sizeof(struct wm8903_priv), GFP_KERNEL);
1733 if (wm8903 == NULL) {
1734 ret = -ENOMEM;
1735 goto err_codec;
1736 }
1737
1738 codec->private_data = wm8903;
1739 socdev->codec = codec;
1740 mutex_init(&codec->mutex);
1741 INIT_LIST_HEAD(&codec->dapm_widgets);
1742 INIT_LIST_HEAD(&codec->dapm_paths);
1743
1744 wm8903_socdev = socdev;
1745
1746 codec->hw_write = (hw_write_t)i2c_master_send;
1747 ret = i2c_add_driver(&wm8903_i2c_driver);
1748 if (ret != 0) {
1749 dev_err(&pdev->dev, "can't add i2c driver");
1750 goto err_priv;
1751 } else {
1752 memset(&board_info, 0, sizeof(board_info));
1753 strlcpy(board_info.type, "wm8903", I2C_NAME_SIZE);
1754 board_info.addr = setup->i2c_address;
1755
1756 adapter = i2c_get_adapter(setup->i2c_bus);
1757 if (!adapter) {
1758 dev_err(&pdev->dev, "Can't get I2C bus %d\n",
1759 setup->i2c_bus);
1760 goto err_adapter;
1761 }
1762
1763 wm8903_i2c_device = i2c_new_device(adapter, &board_info);
1764 i2c_put_adapter(adapter);
1765 if (wm8903_i2c_device == NULL) {
1766 dev_err(&pdev->dev,
1767 "I2C driver registration failed\n");
1768 ret = -ENODEV;
1769 goto err_adapter;
1770 }
1771 }
1772
1773 return ret;
1774
1775err_adapter:
1776 i2c_del_driver(&wm8903_i2c_driver);
1777err_priv:
1778 kfree(codec->private_data);
1779err_codec:
1780 kfree(codec);
1781 return ret;
1782}
1783
1784/* power down chip */
1785static int wm8903_remove(struct platform_device *pdev)
1786{
1787 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1788 struct snd_soc_codec *codec = socdev->codec;
1789
1790 if (codec->control_data)
1791 wm8903_set_bias_level(codec, SND_SOC_BIAS_OFF);
1792
1793 snd_soc_free_pcms(socdev);
1794 snd_soc_dapm_free(socdev);
1795 i2c_unregister_device(wm8903_i2c_device);
1796 i2c_del_driver(&wm8903_i2c_driver);
1797 kfree(codec->private_data);
1798 kfree(codec);
1799
1800 return 0;
1801}
1802
1803struct snd_soc_codec_device soc_codec_dev_wm8903 = {
1804 .probe = wm8903_probe,
1805 .remove = wm8903_remove,
1806 .suspend = wm8903_suspend,
1807 .resume = wm8903_resume,
1808};
1809EXPORT_SYMBOL_GPL(soc_codec_dev_wm8903);
1810
1811MODULE_DESCRIPTION("ASoC WM8903 driver");
1812MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.cm>");
1813MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 01:28:30 -0500