tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * ALSA SoC WM9090 driver
3 *
4 * Copyright 2009, 2010 Wolfson Microelectronics
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 */
22
23#include <linux/module.h>
24#include <linux/errno.h>
25#include <linux/device.h>
26#include <linux/i2c.h>
27#include <linux/delay.h>
28#include <linux/slab.h>
29#include <sound/initval.h>
30#include <sound/soc.h>
31#include <sound/tlv.h>
32#include <sound/wm9090.h>
33
34#include "wm9090.h"
35
36static const u16 wm9090_reg_defaults[] = {
37 0x9093, /* R0 - Software Reset */
38 0x0006, /* R1 - Power Management (1) */
39 0x6000, /* R2 - Power Management (2) */
40 0x0000, /* R3 - Power Management (3) */
41 0x0000, /* R4 */
42 0x0000, /* R5 */
43 0x01C0, /* R6 - Clocking 1 */
44 0x0000, /* R7 */
45 0x0000, /* R8 */
46 0x0000, /* R9 */
47 0x0000, /* R10 */
48 0x0000, /* R11 */
49 0x0000, /* R12 */
50 0x0000, /* R13 */
51 0x0000, /* R14 */
52 0x0000, /* R15 */
53 0x0000, /* R16 */
54 0x0000, /* R17 */
55 0x0000, /* R18 */
56 0x0000, /* R19 */
57 0x0000, /* R20 */
58 0x0000, /* R21 */
59 0x0003, /* R22 - IN1 Line Control */
60 0x0003, /* R23 - IN2 Line Control */
61 0x0083, /* R24 - IN1 Line Input A Volume */
62 0x0083, /* R25 - IN1 Line Input B Volume */
63 0x0083, /* R26 - IN2 Line Input A Volume */
64 0x0083, /* R27 - IN2 Line Input B Volume */
65 0x002D, /* R28 - Left Output Volume */
66 0x002D, /* R29 - Right Output Volume */
67 0x0000, /* R30 */
68 0x0000, /* R31 */
69 0x0000, /* R32 */
70 0x0000, /* R33 */
71 0x0100, /* R34 - SPKMIXL Attenuation */
72 0x0000, /* R35 */
73 0x0010, /* R36 - SPKOUT Mixers */
74 0x0140, /* R37 - ClassD3 */
75 0x0039, /* R38 - Speaker Volume Left */
76 0x0000, /* R39 */
77 0x0000, /* R40 */
78 0x0000, /* R41 */
79 0x0000, /* R42 */
80 0x0000, /* R43 */
81 0x0000, /* R44 */
82 0x0000, /* R45 - Output Mixer1 */
83 0x0000, /* R46 - Output Mixer2 */
84 0x0100, /* R47 - Output Mixer3 */
85 0x0100, /* R48 - Output Mixer4 */
86 0x0000, /* R49 */
87 0x0000, /* R50 */
88 0x0000, /* R51 */
89 0x0000, /* R52 */
90 0x0000, /* R53 */
91 0x0000, /* R54 - Speaker Mixer */
92 0x0000, /* R55 */
93 0x0000, /* R56 */
94 0x000D, /* R57 - AntiPOP2 */
95 0x0000, /* R58 */
96 0x0000, /* R59 */
97 0x0000, /* R60 */
98 0x0000, /* R61 */
99 0x0000, /* R62 */
100 0x0000, /* R63 */
101 0x0000, /* R64 */
102 0x0000, /* R65 */
103 0x0000, /* R66 */
104 0x0000, /* R67 */
105 0x0000, /* R68 */
106 0x0000, /* R69 */
107 0x0000, /* R70 - Write Sequencer 0 */
108 0x0000, /* R71 - Write Sequencer 1 */
109 0x0000, /* R72 - Write Sequencer 2 */
110 0x0000, /* R73 - Write Sequencer 3 */
111 0x0000, /* R74 - Write Sequencer 4 */
112 0x0000, /* R75 - Write Sequencer 5 */
113 0x1F25, /* R76 - Charge Pump 1 */
114 0x0000, /* R77 */
115 0x0000, /* R78 */
116 0x0000, /* R79 */
117 0x0000, /* R80 */
118 0x0000, /* R81 */
119 0x0000, /* R82 */
120 0x0000, /* R83 */
121 0x0000, /* R84 - DC Servo 0 */
122 0x054A, /* R85 - DC Servo 1 */
123 0x0000, /* R86 */
124 0x0000, /* R87 - DC Servo 3 */
125 0x0000, /* R88 - DC Servo Readback 0 */
126 0x0000, /* R89 - DC Servo Readback 1 */
127 0x0000, /* R90 - DC Servo Readback 2 */
128 0x0000, /* R91 */
129 0x0000, /* R92 */
130 0x0000, /* R93 */
131 0x0000, /* R94 */
132 0x0000, /* R95 */
133 0x0100, /* R96 - Analogue HP 0 */
134 0x0000, /* R97 */
135 0x8640, /* R98 - AGC Control 0 */
136 0xC000, /* R99 - AGC Control 1 */
137 0x0200, /* R100 - AGC Control 2 */
138};
139
140/* This struct is used to save the context */
141struct wm9090_priv {
142 struct mutex mutex;
143 struct wm9090_platform_data pdata;
144 void *control_data;
145};
146
147static int wm9090_volatile(struct snd_soc_codec *codec, unsigned int reg)
148{
149 switch (reg) {
150 case WM9090_SOFTWARE_RESET:
151 case WM9090_DC_SERVO_0:
152 case WM9090_DC_SERVO_READBACK_0:
153 case WM9090_DC_SERVO_READBACK_1:
154 case WM9090_DC_SERVO_READBACK_2:
155 return 1;
156
157 default:
158 return 0;
159 }
160}
161
162static void wait_for_dc_servo(struct snd_soc_codec *codec)
163{
164 unsigned int reg;
165 int count = 0;
166
167 dev_dbg(codec->dev, "Waiting for DC servo...\n");
168 do {
169 count++;
170 msleep(1);
171 reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0);
172 dev_dbg(codec->dev, "DC servo status: %x\n", reg);
173 } while ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
174 != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000);
175
176 if ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
177 != WM9090_DCS_CAL_COMPLETE_MASK)
178 dev_err(codec->dev, "Timed out waiting for DC Servo\n");
179}
180
181static const unsigned int in_tlv[] = {
182 TLV_DB_RANGE_HEAD(6),
183 0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
184 1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0),
185 4, 6, TLV_DB_SCALE_ITEM(600, 600, 0),
186};
187static const unsigned int mix_tlv[] = {
188 TLV_DB_RANGE_HEAD(4),
189 0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0),
190 3, 3, TLV_DB_SCALE_ITEM(0, 0, 0),
191};
192static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
193static const unsigned int spkboost_tlv[] = {
194 TLV_DB_RANGE_HEAD(7),
195 0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
196 7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0),
197};
198
199static const struct snd_kcontrol_new wm9090_controls[] = {
200SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0,
201 in_tlv),
202SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1),
203SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0),
204
205SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0,
206 in_tlv),
207SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1),
208SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0),
209
210SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1),
211SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1,
212 mix_tlv),
213SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1,
214 mix_tlv),
215
216SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1),
217SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1,
218 mix_tlv),
219SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1,
220 mix_tlv),
221
222SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1),
223SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1,
224 mix_tlv),
225SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1,
226 mix_tlv),
227
228SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME,
229 WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv),
230SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME,
231 WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1),
232SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME,
233 WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0),
234
235SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0,
236 out_tlv),
237SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1),
238SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0),
239SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv),
240};
241
242static const struct snd_kcontrol_new wm9090_in1_se_controls[] = {
243SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0,
244 in_tlv),
245SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1),
246SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0),
247
248SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1,
249 mix_tlv),
250SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1,
251 mix_tlv),
252SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1,
253 mix_tlv),
254};
255
256static const struct snd_kcontrol_new wm9090_in2_se_controls[] = {
257SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0,
258 in_tlv),
259SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1),
260SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0),
261
262SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1,
263 mix_tlv),
264SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1,
265 mix_tlv),
266SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1,
267 mix_tlv),
268};
269
270static int hp_ev(struct snd_soc_dapm_widget *w,
271 struct snd_kcontrol *kcontrol, int event)
272{
273 struct snd_soc_codec *codec = w->codec;
274 unsigned int reg = snd_soc_read(codec, WM9090_ANALOGUE_HP_0);
275
276 switch (event) {
277 case SND_SOC_DAPM_POST_PMU:
278 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
279 WM9090_CP_ENA, WM9090_CP_ENA);
280
281 msleep(5);
282
283 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
284 WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
285 WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA);
286
287 reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY;
288 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
289
290 /* Start the DC servo. We don't currently use the
291 * ability to save the state since we don't have full
292 * control of the analogue paths and they can change
293 * DC offsets; see the WM8904 driver for an example of
294 * doing so.
295 */
296 snd_soc_write(codec, WM9090_DC_SERVO_0,
297 WM9090_DCS_ENA_CHAN_0 |
298 WM9090_DCS_ENA_CHAN_1 |
299 WM9090_DCS_TRIG_STARTUP_1 |
300 WM9090_DCS_TRIG_STARTUP_0);
301 wait_for_dc_servo(codec);
302
303 reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT |
304 WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT;
305 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
306 break;
307
308 case SND_SOC_DAPM_PRE_PMD:
309 reg &= ~(WM9090_HPOUT1L_RMV_SHORT |
310 WM9090_HPOUT1L_DLY |
311 WM9090_HPOUT1L_OUTP |
312 WM9090_HPOUT1R_RMV_SHORT |
313 WM9090_HPOUT1R_DLY |
314 WM9090_HPOUT1R_OUTP);
315
316 snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
317
318 snd_soc_write(codec, WM9090_DC_SERVO_0, 0);
319
320 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
321 WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
322 0);
323
324 snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
325 WM9090_CP_ENA, 0);
326 break;
327 }
328
329 return 0;
330}
331
332static const struct snd_kcontrol_new spkmix[] = {
333SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0),
334SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0),
335SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0),
336SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0),
337};
338
339static const struct snd_kcontrol_new spkout[] = {
340SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0),
341};
342
343static const struct snd_kcontrol_new mixoutl[] = {
344SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0),
345SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0),
346SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0),
347SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0),
348};
349
350static const struct snd_kcontrol_new mixoutr[] = {
351SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0),
352SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0),
353SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0),
354SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0),
355};
356
357static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = {
358SND_SOC_DAPM_INPUT("IN1+"),
359SND_SOC_DAPM_INPUT("IN1-"),
360SND_SOC_DAPM_INPUT("IN2+"),
361SND_SOC_DAPM_INPUT("IN2-"),
362
363SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0),
364
365SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0),
366SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
367SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
368SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
369
370SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0,
371 spkmix, ARRAY_SIZE(spkmix)),
372SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0,
373 mixoutl, ARRAY_SIZE(mixoutl)),
374SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0,
375 mixoutr, ARRAY_SIZE(mixoutr)),
376
377SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
378 hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
379
380SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0),
381SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0,
382 spkout, ARRAY_SIZE(spkout)),
383
384SND_SOC_DAPM_OUTPUT("HPR"),
385SND_SOC_DAPM_OUTPUT("HPL"),
386SND_SOC_DAPM_OUTPUT("Speaker"),
387};
388
389static const struct snd_soc_dapm_route audio_map[] = {
390 { "IN1A PGA", NULL, "IN1+" },
391 { "IN2A PGA", NULL, "IN2+" },
392
393 { "SPKMIX", "IN1A Switch", "IN1A PGA" },
394 { "SPKMIX", "IN2A Switch", "IN2A PGA" },
395
396 { "MIXOUTL", "IN1A Switch", "IN1A PGA" },
397 { "MIXOUTL", "IN2A Switch", "IN2A PGA" },
398
399 { "MIXOUTR", "IN1A Switch", "IN1A PGA" },
400 { "MIXOUTR", "IN2A Switch", "IN2A PGA" },
401
402 { "HP PGA", NULL, "OSC" },
403 { "HP PGA", NULL, "MIXOUTL" },
404 { "HP PGA", NULL, "MIXOUTR" },
405
406 { "HPL", NULL, "HP PGA" },
407 { "HPR", NULL, "HP PGA" },
408
409 { "SPKPGA", NULL, "OSC" },
410 { "SPKPGA", NULL, "SPKMIX" },
411
412 { "SPKOUT", "Mixer Switch", "SPKPGA" },
413
414 { "Speaker", NULL, "SPKOUT" },
415};
416
417static const struct snd_soc_dapm_route audio_map_in1_se[] = {
418 { "IN1B PGA", NULL, "IN1-" },
419
420 { "SPKMIX", "IN1B Switch", "IN1B PGA" },
421 { "MIXOUTL", "IN1B Switch", "IN1B PGA" },
422 { "MIXOUTR", "IN1B Switch", "IN1B PGA" },
423};
424
425static const struct snd_soc_dapm_route audio_map_in1_diff[] = {
426 { "IN1A PGA", NULL, "IN1-" },
427};
428
429static const struct snd_soc_dapm_route audio_map_in2_se[] = {
430 { "IN2B PGA", NULL, "IN2-" },
431
432 { "SPKMIX", "IN2B Switch", "IN2B PGA" },
433 { "MIXOUTL", "IN2B Switch", "IN2B PGA" },
434 { "MIXOUTR", "IN2B Switch", "IN2B PGA" },
435};
436
437static const struct snd_soc_dapm_route audio_map_in2_diff[] = {
438 { "IN2A PGA", NULL, "IN2-" },
439};
440
441static int wm9090_add_controls(struct snd_soc_codec *codec)
442{
443 struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
444 struct snd_soc_dapm_context *dapm = &codec->dapm;
445 int i;
446
447 snd_soc_dapm_new_controls(dapm, wm9090_dapm_widgets,
448 ARRAY_SIZE(wm9090_dapm_widgets));
449
450 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
451
452 snd_soc_add_controls(codec, wm9090_controls,
453 ARRAY_SIZE(wm9090_controls));
454
455 if (wm9090->pdata.lin1_diff) {
456 snd_soc_dapm_add_routes(dapm, audio_map_in1_diff,
457 ARRAY_SIZE(audio_map_in1_diff));
458 } else {
459 snd_soc_dapm_add_routes(dapm, audio_map_in1_se,
460 ARRAY_SIZE(audio_map_in1_se));
461 snd_soc_add_controls(codec, wm9090_in1_se_controls,
462 ARRAY_SIZE(wm9090_in1_se_controls));
463 }
464
465 if (wm9090->pdata.lin2_diff) {
466 snd_soc_dapm_add_routes(dapm, audio_map_in2_diff,
467 ARRAY_SIZE(audio_map_in2_diff));
468 } else {
469 snd_soc_dapm_add_routes(dapm, audio_map_in2_se,
470 ARRAY_SIZE(audio_map_in2_se));
471 snd_soc_add_controls(codec, wm9090_in2_se_controls,
472 ARRAY_SIZE(wm9090_in2_se_controls));
473 }
474
475 if (wm9090->pdata.agc_ena) {
476 for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++)
477 snd_soc_write(codec, WM9090_AGC_CONTROL_0 + i,
478 wm9090->pdata.agc[i]);
479 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
480 WM9090_AGC_ENA, WM9090_AGC_ENA);
481 } else {
482 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
483 WM9090_AGC_ENA, 0);
484 }
485
486 return 0;
487
488}
489
490/*
491 * The machine driver should call this from their set_bias_level; if there
492 * isn't one then this can just be set as the set_bias_level function.
493 */
494static int wm9090_set_bias_level(struct snd_soc_codec *codec,
495 enum snd_soc_bias_level level)
496{
497 u16 *reg_cache = codec->reg_cache;
498 int i, ret;
499
500 switch (level) {
501 case SND_SOC_BIAS_ON:
502 break;
503
504 case SND_SOC_BIAS_PREPARE:
505 snd_soc_update_bits(codec, WM9090_ANTIPOP2, WM9090_VMID_ENA,
506 WM9090_VMID_ENA);
507 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
508 WM9090_BIAS_ENA |
509 WM9090_VMID_RES_MASK,
510 WM9090_BIAS_ENA |
511 1 << WM9090_VMID_RES_SHIFT);
512 msleep(1); /* Probably an overestimate */
513 break;
514
515 case SND_SOC_BIAS_STANDBY:
516 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
517 /* Restore the register cache */
518 for (i = 1; i < codec->driver->reg_cache_size; i++) {
519 if (reg_cache[i] == wm9090_reg_defaults[i])
520 continue;
521 if (wm9090_volatile(codec, i))
522 continue;
523
524 ret = snd_soc_write(codec, i, reg_cache[i]);
525 if (ret != 0)
526 dev_warn(codec->dev,
527 "Failed to restore register %d: %d\n",
528 i, ret);
529 }
530 }
531
532 /* We keep VMID off during standby since the combination of
533 * ground referenced outputs and class D speaker mean that
534 * latency is not an issue.
535 */
536 snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
537 WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0);
538 snd_soc_update_bits(codec, WM9090_ANTIPOP2,
539 WM9090_VMID_ENA, 0);
540 break;
541
542 case SND_SOC_BIAS_OFF:
543 break;
544 }
545
546 codec->dapm.bias_level = level;
547
548 return 0;
549}
550
551static int wm9090_probe(struct snd_soc_codec *codec)
552{
553 struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
554 int ret;
555
556 codec->control_data = wm9090->control_data;
557 ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
558 if (ret != 0) {
559 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
560 return ret;
561 }
562
563 ret = snd_soc_read(codec, WM9090_SOFTWARE_RESET);
564 if (ret < 0)
565 return ret;
566 if (ret != wm9090_reg_defaults[WM9090_SOFTWARE_RESET]) {
567 dev_err(codec->dev, "Device is not a WM9090, ID=%x\n", ret);
568 return -EINVAL;
569 }
570
571 ret = snd_soc_write(codec, WM9090_SOFTWARE_RESET, 0);
572 if (ret < 0)
573 return ret;
574
575 /* Configure some defaults; they will be written out when we
576 * bring the bias up.
577 */
578 snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_A_VOLUME,
579 WM9090_IN1_VU | WM9090_IN1A_ZC,
580 WM9090_IN1_VU | WM9090_IN1A_ZC);
581 snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_B_VOLUME,
582 WM9090_IN1_VU | WM9090_IN1B_ZC,
583 WM9090_IN1_VU | WM9090_IN1B_ZC);
584 snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_A_VOLUME,
585 WM9090_IN2_VU | WM9090_IN2A_ZC,
586 WM9090_IN2_VU | WM9090_IN2A_ZC);
587 snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_B_VOLUME,
588 WM9090_IN2_VU | WM9090_IN2B_ZC,
589 WM9090_IN2_VU | WM9090_IN2B_ZC);
590 snd_soc_update_bits(codec, WM9090_SPEAKER_VOLUME_LEFT,
591 WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC,
592 WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC);
593 snd_soc_update_bits(codec, WM9090_LEFT_OUTPUT_VOLUME,
594 WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC,
595 WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC);
596 snd_soc_update_bits(codec, WM9090_RIGHT_OUTPUT_VOLUME,
597 WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC,
598 WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC);
599
600 snd_soc_update_bits(codec, WM9090_CLOCKING_1,
601 WM9090_TOCLK_ENA, WM9090_TOCLK_ENA);
602
603 wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
604
605 wm9090_add_controls(codec);
606
607 return 0;
608}
609
610#ifdef CONFIG_PM
611static int wm9090_suspend(struct snd_soc_codec *codec, pm_message_t state)
612{
613 wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF);
614
615 return 0;
616}
617
618static int wm9090_resume(struct snd_soc_codec *codec)
619{
620 wm9090_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
621
622 return 0;
623}
624#else
625#define wm9090_suspend NULL
626#define wm9090_resume NULL
627#endif
628
629static int wm9090_remove(struct snd_soc_codec *codec)
630{
631 wm9090_set_bias_level(codec, SND_SOC_BIAS_OFF);
632
633 return 0;
634}
635
636static struct snd_soc_codec_driver soc_codec_dev_wm9090 = {
637 .probe = wm9090_probe,
638 .remove = wm9090_remove,
639 .suspend = wm9090_suspend,
640 .resume = wm9090_resume,
641 .set_bias_level = wm9090_set_bias_level,
642 .reg_cache_size = (WM9090_MAX_REGISTER + 1),
643 .reg_word_size = sizeof(u16),
644 .reg_cache_default = wm9090_reg_defaults,
645 .volatile_register = wm9090_volatile,
646};
647
648static int wm9090_i2c_probe(struct i2c_client *i2c,
649 const struct i2c_device_id *id)
650{
651 struct wm9090_priv *wm9090;
652 int ret;
653
654 wm9090 = kzalloc(sizeof(*wm9090), GFP_KERNEL);
655 if (wm9090 == NULL) {
656 dev_err(&i2c->dev, "Can not allocate memory\n");
657 return -ENOMEM;
658 }
659
660 if (i2c->dev.platform_data)
661 memcpy(&wm9090->pdata, i2c->dev.platform_data,
662 sizeof(wm9090->pdata));
663
664 i2c_set_clientdata(i2c, wm9090);
665 wm9090->control_data = i2c;
666 mutex_init(&wm9090->mutex);
667
668 ret = snd_soc_register_codec(&i2c->dev,
669 &soc_codec_dev_wm9090, NULL, 0);
670 if (ret < 0)
671 kfree(wm9090);
672 return ret;
673}
674
675static int __devexit wm9090_i2c_remove(struct i2c_client *i2c)
676{
677 struct wm9090_priv *wm9090 = i2c_get_clientdata(i2c);
678
679 snd_soc_unregister_codec(&i2c->dev);
680 kfree(wm9090);
681
682 return 0;
683}
684
685static const struct i2c_device_id wm9090_id[] = {
686 { "wm9090", 0 },
687 { }
688};
689MODULE_DEVICE_TABLE(i2c, wm9090_id);
690
691static struct i2c_driver wm9090_i2c_driver = {
692 .driver = {
693 .name = "wm9090-codec",
694 .owner = THIS_MODULE,
695 },
696 .probe = wm9090_i2c_probe,
697 .remove = __devexit_p(wm9090_i2c_remove),
698 .id_table = wm9090_id,
699};
700
701static int __init wm9090_init(void)
702{
703 return i2c_add_driver(&wm9090_i2c_driver);
704}
705module_init(wm9090_init);
706
707static void __exit wm9090_exit(void)
708{
709 i2c_del_driver(&wm9090_i2c_driver);
710}
711module_exit(wm9090_exit);
712
713MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
714MODULE_DESCRIPTION("WM9090 ASoC driver");
715MODULE_LICENSE("GPL");