1/*
2 * ALSA SoC WM9090 driver
3 *
4 * Copyright 2009-12 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/regmap.h>
29#include <linux/slab.h>
30#include <sound/initval.h>
31#include <sound/soc.h>
32#include <sound/tlv.h>
33#include <sound/wm9090.h>
34
35#include "wm9090.h"
36
37static const struct reg_default wm9090_reg_defaults[] = {
38	{ 1,  0x0006 },     /* R1   - Power Management (1) */
39	{ 2,  0x6000 },     /* R2   - Power Management (2) */
40	{ 3,  0x0000 },     /* R3   - Power Management (3) */
41	{ 6,  0x01C0 },     /* R6   - Clocking 1 */
42	{ 22, 0x0003 },     /* R22  - IN1 Line Control */
43	{ 23, 0x0003 },     /* R23  - IN2 Line Control */
44	{ 24, 0x0083 },     /* R24  - IN1 Line Input A Volume */
45	{ 25, 0x0083 },     /* R25  - IN1  Line Input B Volume */
46	{ 26, 0x0083 },     /* R26  - IN2 Line Input A Volume */
47	{ 27, 0x0083 },     /* R27  - IN2 Line Input B Volume */
48	{ 28, 0x002D },     /* R28  - Left Output Volume */
49	{ 29, 0x002D },     /* R29  - Right Output Volume */
50	{ 34, 0x0100 },     /* R34  - SPKMIXL Attenuation */
51	{ 35, 0x0010 },     /* R36  - SPKOUT Mixers */
52	{ 37, 0x0140 },     /* R37  - ClassD3 */
53	{ 38, 0x0039 },     /* R38  - Speaker Volume Left */
54	{ 45, 0x0000 },     /* R45  - Output Mixer1 */
55	{ 46, 0x0000 },     /* R46  - Output Mixer2 */
56	{ 47, 0x0100 },     /* R47  - Output Mixer3 */
57	{ 48, 0x0100 },     /* R48  - Output Mixer4 */
58	{ 54, 0x0000 },     /* R54  - Speaker Mixer */
59	{ 57, 0x000D },     /* R57  - AntiPOP2 */
60	{ 70, 0x0000 },     /* R70  - Write Sequencer 0 */
61	{ 71, 0x0000 },     /* R71  - Write Sequencer 1 */
62	{ 72, 0x0000 },     /* R72  - Write Sequencer 2 */
63	{ 73, 0x0000 },     /* R73  - Write Sequencer 3 */
64	{ 74, 0x0000 },     /* R74  - Write Sequencer 4 */
65	{ 75, 0x0000 },     /* R75  - Write Sequencer 5 */
66	{ 76, 0x1F25 },     /* R76  - Charge Pump 1 */
67	{ 85, 0x054A },     /* R85  - DC Servo 1 */
68	{ 87, 0x0000 },     /* R87  - DC Servo 3 */
69	{ 96, 0x0100 },     /* R96  - Analogue HP 0 */
70	{ 98, 0x8640 },     /* R98  - AGC Control 0 */
71	{ 99, 0xC000 },     /* R99  - AGC Control 1 */
72	{ 100, 0x0200 },     /* R100 - AGC Control 2 */
73};
74
75/* This struct is used to save the context */
76struct wm9090_priv {
77	struct wm9090_platform_data pdata;
78	struct regmap *regmap;
79};
80
81static bool wm9090_volatile(struct device *dev, unsigned int reg)
82{
83	switch (reg) {
84	case WM9090_SOFTWARE_RESET:
85	case WM9090_DC_SERVO_0:
86	case WM9090_DC_SERVO_READBACK_0:
87	case WM9090_DC_SERVO_READBACK_1:
88	case WM9090_DC_SERVO_READBACK_2:
89		return true;
90
91	default:
92		return false;
93	}
94}
95
96static bool wm9090_readable(struct device *dev, unsigned int reg)
97{
98	switch (reg) {
99	case WM9090_SOFTWARE_RESET:
100	case WM9090_POWER_MANAGEMENT_1:
101	case WM9090_POWER_MANAGEMENT_2:
102	case WM9090_POWER_MANAGEMENT_3:
103	case WM9090_CLOCKING_1:
104	case WM9090_IN1_LINE_CONTROL:
105	case WM9090_IN2_LINE_CONTROL:
106	case WM9090_IN1_LINE_INPUT_A_VOLUME:
107	case WM9090_IN1_LINE_INPUT_B_VOLUME:
108	case WM9090_IN2_LINE_INPUT_A_VOLUME:
109	case WM9090_IN2_LINE_INPUT_B_VOLUME:
110	case WM9090_LEFT_OUTPUT_VOLUME:
111	case WM9090_RIGHT_OUTPUT_VOLUME:
112	case WM9090_SPKMIXL_ATTENUATION:
113	case WM9090_SPKOUT_MIXERS:
114	case WM9090_CLASSD3:
115	case WM9090_SPEAKER_VOLUME_LEFT:
116	case WM9090_OUTPUT_MIXER1:
117	case WM9090_OUTPUT_MIXER2:
118	case WM9090_OUTPUT_MIXER3:
119	case WM9090_OUTPUT_MIXER4:
120	case WM9090_SPEAKER_MIXER:
121	case WM9090_ANTIPOP2:
122	case WM9090_WRITE_SEQUENCER_0:
123	case WM9090_WRITE_SEQUENCER_1:
124	case WM9090_WRITE_SEQUENCER_2:
125	case WM9090_WRITE_SEQUENCER_3:
126	case WM9090_WRITE_SEQUENCER_4:
127	case WM9090_WRITE_SEQUENCER_5:
128	case WM9090_CHARGE_PUMP_1:
129	case WM9090_DC_SERVO_0:
130	case WM9090_DC_SERVO_1:
131	case WM9090_DC_SERVO_3:
132	case WM9090_DC_SERVO_READBACK_0:
133	case WM9090_DC_SERVO_READBACK_1:
134	case WM9090_DC_SERVO_READBACK_2:
135	case WM9090_ANALOGUE_HP_0:
136	case WM9090_AGC_CONTROL_0:
137	case WM9090_AGC_CONTROL_1:
138	case WM9090_AGC_CONTROL_2:
139		return true;
140
141	default:
142		return false;
143	}
144}
145
146static void wait_for_dc_servo(struct snd_soc_codec *codec)
147{
148	unsigned int reg;
149	int count = 0;
150
151	dev_dbg(codec->dev, "Waiting for DC servo...\n");
152	do {
153		count++;
154		msleep(1);
155		reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0);
156		dev_dbg(codec->dev, "DC servo status: %x\n", reg);
157	} while ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
158		 != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000);
159
160	if ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
161	    != WM9090_DCS_CAL_COMPLETE_MASK)
162		dev_err(codec->dev, "Timed out waiting for DC Servo\n");
163}
164
165static const unsigned int in_tlv[] = {
166	TLV_DB_RANGE_HEAD(3),
167	0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
168	1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0),
169	4, 6, TLV_DB_SCALE_ITEM(600, 600, 0),
170};
171static const unsigned int mix_tlv[] = {
172	TLV_DB_RANGE_HEAD(2),
173	0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0),
174	3, 3, TLV_DB_SCALE_ITEM(0, 0, 0),
175};
176static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
177static const unsigned int spkboost_tlv[] = {
178	TLV_DB_RANGE_HEAD(2),
179	0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
180	7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0),
181};
182
183static const struct snd_kcontrol_new wm9090_controls[] = {
184SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0,
185	       in_tlv),
186SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1),
187SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0),
188
189SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0,
190	       in_tlv),
191SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1),
192SOC_SINGLE("IN2A ZC Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 6, 1, 0),
193
194SOC_SINGLE("MIXOUTL Switch", WM9090_OUTPUT_MIXER3, 8, 1, 1),
195SOC_SINGLE_TLV("MIXOUTL IN1A Volume", WM9090_OUTPUT_MIXER3, 6, 3, 1,
196	       mix_tlv),
197SOC_SINGLE_TLV("MIXOUTL IN2A Volume", WM9090_OUTPUT_MIXER3, 2, 3, 1,
198	       mix_tlv),
199
200SOC_SINGLE("MIXOUTR Switch", WM9090_OUTPUT_MIXER4, 8, 1, 1),
201SOC_SINGLE_TLV("MIXOUTR IN1A Volume", WM9090_OUTPUT_MIXER4, 6, 3, 1,
202	       mix_tlv),
203SOC_SINGLE_TLV("MIXOUTR IN2A Volume", WM9090_OUTPUT_MIXER4, 2, 3, 1,
204	       mix_tlv),
205
206SOC_SINGLE("SPKMIX Switch", WM9090_SPKMIXL_ATTENUATION, 8, 1, 1),
207SOC_SINGLE_TLV("SPKMIX IN1A Volume", WM9090_SPKMIXL_ATTENUATION, 6, 3, 1,
208	       mix_tlv),
209SOC_SINGLE_TLV("SPKMIX IN2A Volume", WM9090_SPKMIXL_ATTENUATION, 2, 3, 1,
210	       mix_tlv),
211
212SOC_DOUBLE_R_TLV("Headphone Volume", WM9090_LEFT_OUTPUT_VOLUME,
213		 WM9090_RIGHT_OUTPUT_VOLUME, 0, 63, 0, out_tlv),
214SOC_DOUBLE_R("Headphone Switch", WM9090_LEFT_OUTPUT_VOLUME,
215	     WM9090_RIGHT_OUTPUT_VOLUME, 6, 1, 1),
216SOC_DOUBLE_R("Headphone ZC Switch", WM9090_LEFT_OUTPUT_VOLUME,
217	     WM9090_RIGHT_OUTPUT_VOLUME, 7, 1, 0),
218
219SOC_SINGLE_TLV("Speaker Volume", WM9090_SPEAKER_VOLUME_LEFT, 0, 63, 0,
220	       out_tlv),
221SOC_SINGLE("Speaker Switch", WM9090_SPEAKER_VOLUME_LEFT, 6, 1, 1),
222SOC_SINGLE("Speaker ZC Switch", WM9090_SPEAKER_VOLUME_LEFT, 7, 1, 0),
223SOC_SINGLE_TLV("Speaker Boost Volume", WM9090_CLASSD3, 3, 7, 0, spkboost_tlv),
224};
225
226static const struct snd_kcontrol_new wm9090_in1_se_controls[] = {
227SOC_SINGLE_TLV("IN1B Volume", WM9090_IN1_LINE_INPUT_B_VOLUME, 0, 6, 0,
228	       in_tlv),
229SOC_SINGLE("IN1B Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 7, 1, 1),
230SOC_SINGLE("IN1B ZC Switch", WM9090_IN1_LINE_INPUT_B_VOLUME, 6, 1, 0),
231
232SOC_SINGLE_TLV("SPKMIX IN1B Volume", WM9090_SPKMIXL_ATTENUATION, 4, 3, 1,
233	       mix_tlv),
234SOC_SINGLE_TLV("MIXOUTL IN1B Volume", WM9090_OUTPUT_MIXER3, 4, 3, 1,
235	       mix_tlv),
236SOC_SINGLE_TLV("MIXOUTR IN1B Volume", WM9090_OUTPUT_MIXER4, 4, 3, 1,
237	       mix_tlv),
238};
239
240static const struct snd_kcontrol_new wm9090_in2_se_controls[] = {
241SOC_SINGLE_TLV("IN2B Volume", WM9090_IN2_LINE_INPUT_B_VOLUME, 0, 6, 0,
242	       in_tlv),
243SOC_SINGLE("IN2B Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 7, 1, 1),
244SOC_SINGLE("IN2B ZC Switch", WM9090_IN2_LINE_INPUT_B_VOLUME, 6, 1, 0),
245
246SOC_SINGLE_TLV("SPKMIX IN2B Volume", WM9090_SPKMIXL_ATTENUATION, 0, 3, 1,
247	       mix_tlv),
248SOC_SINGLE_TLV("MIXOUTL IN2B Volume", WM9090_OUTPUT_MIXER3, 0, 3, 1,
249	       mix_tlv),
250SOC_SINGLE_TLV("MIXOUTR IN2B Volume", WM9090_OUTPUT_MIXER4, 0, 3, 1,
251	       mix_tlv),
252};
253
254static int hp_ev(struct snd_soc_dapm_widget *w,
255		 struct snd_kcontrol *kcontrol, int event)
256{
257	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
258	unsigned int reg = snd_soc_read(codec, WM9090_ANALOGUE_HP_0);
259
260	switch (event) {
261	case SND_SOC_DAPM_POST_PMU:
262		snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
263				    WM9090_CP_ENA, WM9090_CP_ENA);
264
265		msleep(5);
266
267		snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
268				    WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
269				    WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA);
270
271		reg |= WM9090_HPOUT1L_DLY | WM9090_HPOUT1R_DLY;
272		snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
273
274		/* Start the DC servo.  We don't currently use the
275		 * ability to save the state since we don't have full
276		 * control of the analogue paths and they can change
277		 * DC offsets; see the WM8904 driver for an example of
278		 * doing so.
279		 */
280		snd_soc_write(codec, WM9090_DC_SERVO_0,
281			      WM9090_DCS_ENA_CHAN_0 |
282			      WM9090_DCS_ENA_CHAN_1 |
283			      WM9090_DCS_TRIG_STARTUP_1 |
284			      WM9090_DCS_TRIG_STARTUP_0);
285		wait_for_dc_servo(codec);
286
287		reg |= WM9090_HPOUT1R_OUTP | WM9090_HPOUT1R_RMV_SHORT |
288			WM9090_HPOUT1L_OUTP | WM9090_HPOUT1L_RMV_SHORT;
289		snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
290		break;
291
292	case SND_SOC_DAPM_PRE_PMD:
293		reg &= ~(WM9090_HPOUT1L_RMV_SHORT |
294			 WM9090_HPOUT1L_DLY |
295			 WM9090_HPOUT1L_OUTP |
296			 WM9090_HPOUT1R_RMV_SHORT |
297			 WM9090_HPOUT1R_DLY |
298			 WM9090_HPOUT1R_OUTP);
299
300		snd_soc_write(codec, WM9090_ANALOGUE_HP_0, reg);
301
302		snd_soc_write(codec, WM9090_DC_SERVO_0, 0);
303
304		snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
305				    WM9090_HPOUT1L_ENA | WM9090_HPOUT1R_ENA,
306				    0);
307
308		snd_soc_update_bits(codec, WM9090_CHARGE_PUMP_1,
309				    WM9090_CP_ENA, 0);
310		break;
311	}
312
313	return 0;
314}
315
316static const struct snd_kcontrol_new spkmix[] = {
317SOC_DAPM_SINGLE("IN1A Switch", WM9090_SPEAKER_MIXER, 6, 1, 0),
318SOC_DAPM_SINGLE("IN1B Switch", WM9090_SPEAKER_MIXER, 4, 1, 0),
319SOC_DAPM_SINGLE("IN2A Switch", WM9090_SPEAKER_MIXER, 2, 1, 0),
320SOC_DAPM_SINGLE("IN2B Switch", WM9090_SPEAKER_MIXER, 0, 1, 0),
321};
322
323static const struct snd_kcontrol_new spkout[] = {
324SOC_DAPM_SINGLE("Mixer Switch", WM9090_SPKOUT_MIXERS, 4, 1, 0),
325};
326
327static const struct snd_kcontrol_new mixoutl[] = {
328SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER1, 6, 1, 0),
329SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER1, 4, 1, 0),
330SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER1, 2, 1, 0),
331SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER1, 0, 1, 0),
332};
333
334static const struct snd_kcontrol_new mixoutr[] = {
335SOC_DAPM_SINGLE("IN1A Switch", WM9090_OUTPUT_MIXER2, 6, 1, 0),
336SOC_DAPM_SINGLE("IN1B Switch", WM9090_OUTPUT_MIXER2, 4, 1, 0),
337SOC_DAPM_SINGLE("IN2A Switch", WM9090_OUTPUT_MIXER2, 2, 1, 0),
338SOC_DAPM_SINGLE("IN2B Switch", WM9090_OUTPUT_MIXER2, 0, 1, 0),
339};
340
341static const struct snd_soc_dapm_widget wm9090_dapm_widgets[] = {
342SND_SOC_DAPM_INPUT("IN1+"),
343SND_SOC_DAPM_INPUT("IN1-"),
344SND_SOC_DAPM_INPUT("IN2+"),
345SND_SOC_DAPM_INPUT("IN2-"),
346
347SND_SOC_DAPM_SUPPLY("OSC", WM9090_POWER_MANAGEMENT_1, 3, 0, NULL, 0),
348
349SND_SOC_DAPM_PGA("IN1A PGA", WM9090_POWER_MANAGEMENT_2, 7, 0, NULL, 0),
350SND_SOC_DAPM_PGA("IN1B PGA", WM9090_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
351SND_SOC_DAPM_PGA("IN2A PGA", WM9090_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
352SND_SOC_DAPM_PGA("IN2B PGA", WM9090_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
353
354SND_SOC_DAPM_MIXER("SPKMIX", WM9090_POWER_MANAGEMENT_3, 3, 0,
355		   spkmix, ARRAY_SIZE(spkmix)),
356SND_SOC_DAPM_MIXER("MIXOUTL", WM9090_POWER_MANAGEMENT_3, 5, 0,
357		   mixoutl, ARRAY_SIZE(mixoutl)),
358SND_SOC_DAPM_MIXER("MIXOUTR", WM9090_POWER_MANAGEMENT_3, 4, 0,
359		   mixoutr, ARRAY_SIZE(mixoutr)),
360
361SND_SOC_DAPM_PGA_E("HP PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
362		   hp_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
363
364SND_SOC_DAPM_PGA("SPKPGA", WM9090_POWER_MANAGEMENT_3, 8, 0, NULL, 0),
365SND_SOC_DAPM_MIXER("SPKOUT", WM9090_POWER_MANAGEMENT_1, 12, 0,
366		   spkout, ARRAY_SIZE(spkout)),
367
368SND_SOC_DAPM_OUTPUT("HPR"),
369SND_SOC_DAPM_OUTPUT("HPL"),
370SND_SOC_DAPM_OUTPUT("Speaker"),
371};
372
373static const struct snd_soc_dapm_route audio_map[] = {
374	{ "IN1A PGA", NULL, "IN1+" },
375	{ "IN2A PGA", NULL, "IN2+" },
376
377	{ "SPKMIX", "IN1A Switch", "IN1A PGA" },
378	{ "SPKMIX", "IN2A Switch", "IN2A PGA" },
379
380	{ "MIXOUTL", "IN1A Switch", "IN1A PGA" },
381	{ "MIXOUTL", "IN2A Switch", "IN2A PGA" },
382
383	{ "MIXOUTR", "IN1A Switch", "IN1A PGA" },
384	{ "MIXOUTR", "IN2A Switch", "IN2A PGA" },
385
386	{ "HP PGA", NULL, "OSC" },
387	{ "HP PGA", NULL, "MIXOUTL" },
388	{ "HP PGA", NULL, "MIXOUTR" },
389
390	{ "HPL", NULL, "HP PGA" },
391	{ "HPR", NULL, "HP PGA" },
392
393	{ "SPKPGA", NULL, "OSC" },
394	{ "SPKPGA", NULL, "SPKMIX" },
395
396	{ "SPKOUT", "Mixer Switch", "SPKPGA" },
397
398	{ "Speaker", NULL, "SPKOUT" },
399};
400
401static const struct snd_soc_dapm_route audio_map_in1_se[] = {
402	{ "IN1B PGA", NULL, "IN1-" },
403
404	{ "SPKMIX", "IN1B Switch", "IN1B PGA" },
405	{ "MIXOUTL", "IN1B Switch", "IN1B PGA" },
406	{ "MIXOUTR", "IN1B Switch", "IN1B PGA" },
407};
408
409static const struct snd_soc_dapm_route audio_map_in1_diff[] = {
410	{ "IN1A PGA", NULL, "IN1-" },
411};
412
413static const struct snd_soc_dapm_route audio_map_in2_se[] = {
414	{ "IN2B PGA", NULL, "IN2-" },
415
416	{ "SPKMIX", "IN2B Switch", "IN2B PGA" },
417	{ "MIXOUTL", "IN2B Switch", "IN2B PGA" },
418	{ "MIXOUTR", "IN2B Switch", "IN2B PGA" },
419};
420
421static const struct snd_soc_dapm_route audio_map_in2_diff[] = {
422	{ "IN2A PGA", NULL, "IN2-" },
423};
424
425static int wm9090_add_controls(struct snd_soc_codec *codec)
426{
427	struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
428	struct snd_soc_dapm_context *dapm = &codec->dapm;
429	int i;
430
431	snd_soc_dapm_new_controls(dapm, wm9090_dapm_widgets,
432				  ARRAY_SIZE(wm9090_dapm_widgets));
433
434	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
435
436	snd_soc_add_codec_controls(codec, wm9090_controls,
437			     ARRAY_SIZE(wm9090_controls));
438
439	if (wm9090->pdata.lin1_diff) {
440		snd_soc_dapm_add_routes(dapm, audio_map_in1_diff,
441					ARRAY_SIZE(audio_map_in1_diff));
442	} else {
443		snd_soc_dapm_add_routes(dapm, audio_map_in1_se,
444					ARRAY_SIZE(audio_map_in1_se));
445		snd_soc_add_codec_controls(codec, wm9090_in1_se_controls,
446				     ARRAY_SIZE(wm9090_in1_se_controls));
447	}
448
449	if (wm9090->pdata.lin2_diff) {
450		snd_soc_dapm_add_routes(dapm, audio_map_in2_diff,
451					ARRAY_SIZE(audio_map_in2_diff));
452	} else {
453		snd_soc_dapm_add_routes(dapm, audio_map_in2_se,
454					ARRAY_SIZE(audio_map_in2_se));
455		snd_soc_add_codec_controls(codec, wm9090_in2_se_controls,
456				     ARRAY_SIZE(wm9090_in2_se_controls));
457	}
458
459	if (wm9090->pdata.agc_ena) {
460		for (i = 0; i < ARRAY_SIZE(wm9090->pdata.agc); i++)
461			snd_soc_write(codec, WM9090_AGC_CONTROL_0 + i,
462				      wm9090->pdata.agc[i]);
463		snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
464				    WM9090_AGC_ENA, WM9090_AGC_ENA);
465	} else {
466		snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_3,
467				    WM9090_AGC_ENA, 0);
468	}
469
470	return 0;
471
472}
473
474/*
475 * The machine driver should call this from their set_bias_level; if there
476 * isn't one then this can just be set as the set_bias_level function.
477 */
478static int wm9090_set_bias_level(struct snd_soc_codec *codec,
479				 enum snd_soc_bias_level level)
480{
481	struct wm9090_priv *wm9090 = snd_soc_codec_get_drvdata(codec);
482
483	switch (level) {
484	case SND_SOC_BIAS_ON:
485		break;
486
487	case SND_SOC_BIAS_PREPARE:
488		snd_soc_update_bits(codec, WM9090_ANTIPOP2, WM9090_VMID_ENA,
489				    WM9090_VMID_ENA);
490		snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
491				    WM9090_BIAS_ENA |
492				    WM9090_VMID_RES_MASK,
493				    WM9090_BIAS_ENA |
494				    1 << WM9090_VMID_RES_SHIFT);
495		msleep(1);  /* Probably an overestimate */
496		break;
497
498	case SND_SOC_BIAS_STANDBY:
499		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
500			/* Restore the register cache */
501			regcache_sync(wm9090->regmap);
502		}
503
504		/* We keep VMID off during standby since the combination of
505		 * ground referenced outputs and class D speaker mean that
506		 * latency is not an issue.
507		 */
508		snd_soc_update_bits(codec, WM9090_POWER_MANAGEMENT_1,
509				    WM9090_BIAS_ENA | WM9090_VMID_RES_MASK, 0);
510		snd_soc_update_bits(codec, WM9090_ANTIPOP2,
511				    WM9090_VMID_ENA, 0);
512		break;
513
514	case SND_SOC_BIAS_OFF:
515		break;
516	}
517
518	codec->dapm.bias_level = level;
519
520	return 0;
521}
522
523static int wm9090_probe(struct snd_soc_codec *codec)
524{
525	/* Configure some defaults; they will be written out when we
526	 * bring the bias up.
527	 */
528	snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_A_VOLUME,
529			    WM9090_IN1_VU | WM9090_IN1A_ZC,
530			    WM9090_IN1_VU | WM9090_IN1A_ZC);
531	snd_soc_update_bits(codec, WM9090_IN1_LINE_INPUT_B_VOLUME,
532			    WM9090_IN1_VU | WM9090_IN1B_ZC,
533			    WM9090_IN1_VU | WM9090_IN1B_ZC);
534	snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_A_VOLUME,
535			    WM9090_IN2_VU | WM9090_IN2A_ZC,
536			    WM9090_IN2_VU | WM9090_IN2A_ZC);
537	snd_soc_update_bits(codec, WM9090_IN2_LINE_INPUT_B_VOLUME,
538			    WM9090_IN2_VU | WM9090_IN2B_ZC,
539			    WM9090_IN2_VU | WM9090_IN2B_ZC);
540	snd_soc_update_bits(codec, WM9090_SPEAKER_VOLUME_LEFT,
541			    WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC,
542			    WM9090_SPKOUT_VU | WM9090_SPKOUTL_ZC);
543	snd_soc_update_bits(codec, WM9090_LEFT_OUTPUT_VOLUME,
544			    WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC,
545			    WM9090_HPOUT1_VU | WM9090_HPOUT1L_ZC);
546	snd_soc_update_bits(codec, WM9090_RIGHT_OUTPUT_VOLUME,
547			    WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC,
548			    WM9090_HPOUT1_VU | WM9090_HPOUT1R_ZC);
549
550	snd_soc_update_bits(codec, WM9090_CLOCKING_1,
551			    WM9090_TOCLK_ENA, WM9090_TOCLK_ENA);
552
553	wm9090_add_controls(codec);
554
555	return 0;
556}
557
558static struct snd_soc_codec_driver soc_codec_dev_wm9090 = {
559	.probe = 	wm9090_probe,
560	.set_bias_level = wm9090_set_bias_level,
561	.suspend_bias_off = true,
562};
563
564static const struct regmap_config wm9090_regmap = {
565	.reg_bits = 8,
566	.val_bits = 16,
567
568	.max_register = WM9090_MAX_REGISTER,
569	.volatile_reg = wm9090_volatile,
570	.readable_reg = wm9090_readable,
571
572	.cache_type = REGCACHE_RBTREE,
573	.reg_defaults = wm9090_reg_defaults,
574	.num_reg_defaults = ARRAY_SIZE(wm9090_reg_defaults),
575};
576
577
578static int wm9090_i2c_probe(struct i2c_client *i2c,
579			    const struct i2c_device_id *id)
580{
581	struct wm9090_priv *wm9090;
582	unsigned int reg;
583	int ret;
584
585	wm9090 = devm_kzalloc(&i2c->dev, sizeof(*wm9090), GFP_KERNEL);
586	if (!wm9090)
587		return -ENOMEM;
588
589	wm9090->regmap = devm_regmap_init_i2c(i2c, &wm9090_regmap);
590	if (IS_ERR(wm9090->regmap)) {
591		ret = PTR_ERR(wm9090->regmap);
592		dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
593		return ret;
594	}
595
596	ret = regmap_read(wm9090->regmap, WM9090_SOFTWARE_RESET, &reg);
597	if (ret < 0)
598		return ret;
599
600	if (reg != 0x9093) {
601		dev_err(&i2c->dev, "Device is not a WM9090, ID=%x\n", reg);
602		return -ENODEV;
603	}
604
605	ret = regmap_write(wm9090->regmap, WM9090_SOFTWARE_RESET, 0);
606	if (ret < 0)
607		return ret;
608
609	if (i2c->dev.platform_data)
610		memcpy(&wm9090->pdata, i2c->dev.platform_data,
611		       sizeof(wm9090->pdata));
612
613	i2c_set_clientdata(i2c, wm9090);
614
615	ret =  snd_soc_register_codec(&i2c->dev,
616			&soc_codec_dev_wm9090,  NULL, 0);
617	if (ret != 0) {
618		dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
619		return ret;
620	}
621
622	return 0;
623}
624
625static int wm9090_i2c_remove(struct i2c_client *i2c)
626{
627	snd_soc_unregister_codec(&i2c->dev);
628	return 0;
629}
630
631static const struct i2c_device_id wm9090_id[] = {
632	{ "wm9090", 0 },
633	{ "wm9093", 0 },
634	{ }
635};
636MODULE_DEVICE_TABLE(i2c, wm9090_id);
637
638static struct i2c_driver wm9090_i2c_driver = {
639	.driver = {
640		.name = "wm9090",
641		.owner = THIS_MODULE,
642	},
643	.probe = wm9090_i2c_probe,
644	.remove = wm9090_i2c_remove,
645	.id_table = wm9090_id,
646};
647
648module_i2c_driver(wm9090_i2c_driver);
649
650MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
651MODULE_DESCRIPTION("WM9090 ASoC driver");
652MODULE_LICENSE("GPL");
653