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