xref: /linux/sound/soc/codecs/wm8991.c (revision e0bf6c5ca2d3281f231c5f0c9bf145e9513644de)
1 /*
2  * wm8991.c  --  WM8991 ALSA Soc Audio driver
3  *
4  * Copyright 2007-2010 Wolfson Microelectronics PLC.
5  * Author: Graeme Gregory
6  *         Graeme.Gregory@wolfsonmicro.com
7  *
8  *  This program is free software; you can redistribute  it and/or modify it
9  *  under  the terms of  the GNU General  Public License as published by the
10  *  Free Software Foundation;  either version 2 of the  License, or (at your
11  *  option) any later version.
12  */
13 
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
19 #include <linux/pm.h>
20 #include <linux/i2c.h>
21 #include <linux/regmap.h>
22 #include <linux/slab.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/soc.h>
27 #include <sound/soc-dapm.h>
28 #include <sound/initval.h>
29 #include <sound/tlv.h>
30 #include <asm/div64.h>
31 
32 #include "wm8991.h"
33 
34 struct wm8991_priv {
35 	struct regmap *regmap;
36 	unsigned int pcmclk;
37 };
38 
39 static const struct reg_default wm8991_reg_defaults[] = {
40 	{  1, 0x0000 },     /* R1  - Power Management (1) */
41 	{  2, 0x6000 },     /* R2  - Power Management (2) */
42 	{  3, 0x0000 },     /* R3  - Power Management (3) */
43 	{  4, 0x4050 },     /* R4  - Audio Interface (1) */
44 	{  5, 0x4000 },     /* R5  - Audio Interface (2) */
45 	{  6, 0x01C8 },     /* R6  - Clocking (1) */
46 	{  7, 0x0000 },     /* R7  - Clocking (2) */
47 	{  8, 0x0040 },     /* R8  - Audio Interface (3) */
48 	{  9, 0x0040 },     /* R9  - Audio Interface (4) */
49 	{ 10, 0x0004 },     /* R10 - DAC CTRL */
50 	{ 11, 0x00C0 },     /* R11 - Left DAC Digital Volume */
51 	{ 12, 0x00C0 },     /* R12 - Right DAC Digital Volume */
52 	{ 13, 0x0000 },     /* R13 - Digital Side Tone */
53 	{ 14, 0x0100 },     /* R14 - ADC CTRL */
54 	{ 15, 0x00C0 },     /* R15 - Left ADC Digital Volume */
55 	{ 16, 0x00C0 },     /* R16 - Right ADC Digital Volume */
56 
57 	{ 18, 0x0000 },     /* R18 - GPIO CTRL 1 */
58 	{ 19, 0x1000 },     /* R19 - GPIO1 & GPIO2 */
59 	{ 20, 0x1010 },     /* R20 - GPIO3 & GPIO4 */
60 	{ 21, 0x1010 },     /* R21 - GPIO5 & GPIO6 */
61 	{ 22, 0x8000 },     /* R22 - GPIOCTRL 2 */
62 	{ 23, 0x0800 },     /* R23 - GPIO_POL */
63 	{ 24, 0x008B },     /* R24 - Left Line Input 1&2 Volume */
64 	{ 25, 0x008B },     /* R25 - Left Line Input 3&4 Volume */
65 	{ 26, 0x008B },     /* R26 - Right Line Input 1&2 Volume */
66 	{ 27, 0x008B },     /* R27 - Right Line Input 3&4 Volume */
67 	{ 28, 0x0000 },     /* R28 - Left Output Volume */
68 	{ 29, 0x0000 },     /* R29 - Right Output Volume */
69 	{ 30, 0x0066 },     /* R30 - Line Outputs Volume */
70 	{ 31, 0x0022 },     /* R31 - Out3/4 Volume */
71 	{ 32, 0x0079 },     /* R32 - Left OPGA Volume */
72 	{ 33, 0x0079 },     /* R33 - Right OPGA Volume */
73 	{ 34, 0x0003 },     /* R34 - Speaker Volume */
74 	{ 35, 0x0003 },     /* R35 - ClassD1 */
75 
76 	{ 37, 0x0100 },     /* R37 - ClassD3 */
77 
78 	{ 39, 0x0000 },     /* R39 - Input Mixer1 */
79 	{ 40, 0x0000 },     /* R40 - Input Mixer2 */
80 	{ 41, 0x0000 },     /* R41 - Input Mixer3 */
81 	{ 42, 0x0000 },     /* R42 - Input Mixer4 */
82 	{ 43, 0x0000 },     /* R43 - Input Mixer5 */
83 	{ 44, 0x0000 },     /* R44 - Input Mixer6 */
84 	{ 45, 0x0000 },     /* R45 - Output Mixer1 */
85 	{ 46, 0x0000 },     /* R46 - Output Mixer2 */
86 	{ 47, 0x0000 },     /* R47 - Output Mixer3 */
87 	{ 48, 0x0000 },     /* R48 - Output Mixer4 */
88 	{ 49, 0x0000 },     /* R49 - Output Mixer5 */
89 	{ 50, 0x0000 },     /* R50 - Output Mixer6 */
90 	{ 51, 0x0180 },     /* R51 - Out3/4 Mixer */
91 	{ 52, 0x0000 },     /* R52 - Line Mixer1 */
92 	{ 53, 0x0000 },     /* R53 - Line Mixer2 */
93 	{ 54, 0x0000 },     /* R54 - Speaker Mixer */
94 	{ 55, 0x0000 },     /* R55 - Additional Control */
95 	{ 56, 0x0000 },     /* R56 - AntiPOP1 */
96 	{ 57, 0x0000 },     /* R57 - AntiPOP2 */
97 	{ 58, 0x0000 },     /* R58 - MICBIAS */
98 
99 	{ 60, 0x0008 },     /* R60 - PLL1 */
100 	{ 61, 0x0031 },     /* R61 - PLL2 */
101 	{ 62, 0x0026 },     /* R62 - PLL3 */
102 };
103 
104 static bool wm8991_volatile(struct device *dev, unsigned int reg)
105 {
106 	switch (reg) {
107 	case WM8991_RESET:
108 		return true;
109 	default:
110 		return false;
111 	}
112 }
113 
114 static const unsigned int rec_mix_tlv[] = {
115 	TLV_DB_RANGE_HEAD(1),
116 	0, 7, TLV_DB_LINEAR_ITEM(-1500, 600),
117 };
118 
119 static const unsigned int in_pga_tlv[] = {
120 	TLV_DB_RANGE_HEAD(1),
121 	0, 0x1F, TLV_DB_LINEAR_ITEM(-1650, 3000),
122 };
123 
124 static const unsigned int out_mix_tlv[] = {
125 	TLV_DB_RANGE_HEAD(1),
126 	0, 7, TLV_DB_LINEAR_ITEM(0, -2100),
127 };
128 
129 static const unsigned int out_pga_tlv[] = {
130 	TLV_DB_RANGE_HEAD(1),
131 	0, 127, TLV_DB_LINEAR_ITEM(-7300, 600),
132 };
133 
134 static const unsigned int out_omix_tlv[] = {
135 	TLV_DB_RANGE_HEAD(1),
136 	0, 7, TLV_DB_LINEAR_ITEM(-600, 0),
137 };
138 
139 static const unsigned int out_dac_tlv[] = {
140 	TLV_DB_RANGE_HEAD(1),
141 	0, 255, TLV_DB_LINEAR_ITEM(-7163, 0),
142 };
143 
144 static const unsigned int in_adc_tlv[] = {
145 	TLV_DB_RANGE_HEAD(1),
146 	0, 255, TLV_DB_LINEAR_ITEM(-7163, 1763),
147 };
148 
149 static const unsigned int out_sidetone_tlv[] = {
150 	TLV_DB_RANGE_HEAD(1),
151 	0, 31, TLV_DB_LINEAR_ITEM(-3600, 0),
152 };
153 
154 static int wm899x_outpga_put_volsw_vu(struct snd_kcontrol *kcontrol,
155 				      struct snd_ctl_elem_value *ucontrol)
156 {
157 	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
158 	int reg = kcontrol->private_value & 0xff;
159 	int ret;
160 	u16 val;
161 
162 	ret = snd_soc_put_volsw(kcontrol, ucontrol);
163 	if (ret < 0)
164 		return ret;
165 
166 	/* now hit the volume update bits (always bit 8) */
167 	val = snd_soc_read(codec, reg);
168 	return snd_soc_write(codec, reg, val | 0x0100);
169 }
170 
171 static const char *wm8991_digital_sidetone[] =
172 {"None", "Left ADC", "Right ADC", "Reserved"};
173 
174 static SOC_ENUM_SINGLE_DECL(wm8991_left_digital_sidetone_enum,
175 			    WM8991_DIGITAL_SIDE_TONE,
176 			    WM8991_ADC_TO_DACL_SHIFT,
177 			    wm8991_digital_sidetone);
178 
179 static SOC_ENUM_SINGLE_DECL(wm8991_right_digital_sidetone_enum,
180 			    WM8991_DIGITAL_SIDE_TONE,
181 			    WM8991_ADC_TO_DACR_SHIFT,
182 			    wm8991_digital_sidetone);
183 
184 static const char *wm8991_adcmode[] =
185 {"Hi-fi mode", "Voice mode 1", "Voice mode 2", "Voice mode 3"};
186 
187 static SOC_ENUM_SINGLE_DECL(wm8991_right_adcmode_enum,
188 			    WM8991_ADC_CTRL,
189 			    WM8991_ADC_HPF_CUT_SHIFT,
190 			    wm8991_adcmode);
191 
192 static const struct snd_kcontrol_new wm8991_snd_controls[] = {
193 	/* INMIXL */
194 	SOC_SINGLE("LIN12 PGA Boost", WM8991_INPUT_MIXER3, WM8991_L12MNBST_BIT, 1, 0),
195 	SOC_SINGLE("LIN34 PGA Boost", WM8991_INPUT_MIXER3, WM8991_L34MNBST_BIT, 1, 0),
196 	/* INMIXR */
197 	SOC_SINGLE("RIN12 PGA Boost", WM8991_INPUT_MIXER3, WM8991_R12MNBST_BIT, 1, 0),
198 	SOC_SINGLE("RIN34 PGA Boost", WM8991_INPUT_MIXER3, WM8991_R34MNBST_BIT, 1, 0),
199 
200 	/* LOMIX */
201 	SOC_SINGLE_TLV("LOMIX LIN3 Bypass Volume", WM8991_OUTPUT_MIXER3,
202 		WM8991_LLI3LOVOL_SHIFT, WM8991_LLI3LOVOL_MASK, 1, out_mix_tlv),
203 	SOC_SINGLE_TLV("LOMIX RIN12 PGA Bypass Volume", WM8991_OUTPUT_MIXER3,
204 		WM8991_LR12LOVOL_SHIFT, WM8991_LR12LOVOL_MASK, 1, out_mix_tlv),
205 	SOC_SINGLE_TLV("LOMIX LIN12 PGA Bypass Volume", WM8991_OUTPUT_MIXER3,
206 		WM8991_LL12LOVOL_SHIFT, WM8991_LL12LOVOL_MASK, 1, out_mix_tlv),
207 	SOC_SINGLE_TLV("LOMIX RIN3 Bypass Volume", WM8991_OUTPUT_MIXER5,
208 		WM8991_LRI3LOVOL_SHIFT, WM8991_LRI3LOVOL_MASK, 1, out_mix_tlv),
209 	SOC_SINGLE_TLV("LOMIX AINRMUX Bypass Volume", WM8991_OUTPUT_MIXER5,
210 		WM8991_LRBLOVOL_SHIFT, WM8991_LRBLOVOL_MASK, 1, out_mix_tlv),
211 	SOC_SINGLE_TLV("LOMIX AINLMUX Bypass Volume", WM8991_OUTPUT_MIXER5,
212 		WM8991_LRBLOVOL_SHIFT, WM8991_LRBLOVOL_MASK, 1, out_mix_tlv),
213 
214 	/* ROMIX */
215 	SOC_SINGLE_TLV("ROMIX RIN3 Bypass Volume", WM8991_OUTPUT_MIXER4,
216 		WM8991_RRI3ROVOL_SHIFT, WM8991_RRI3ROVOL_MASK, 1, out_mix_tlv),
217 	SOC_SINGLE_TLV("ROMIX LIN12 PGA Bypass Volume", WM8991_OUTPUT_MIXER4,
218 		WM8991_RL12ROVOL_SHIFT, WM8991_RL12ROVOL_MASK, 1, out_mix_tlv),
219 	SOC_SINGLE_TLV("ROMIX RIN12 PGA Bypass Volume", WM8991_OUTPUT_MIXER4,
220 		WM8991_RR12ROVOL_SHIFT, WM8991_RR12ROVOL_MASK, 1, out_mix_tlv),
221 	SOC_SINGLE_TLV("ROMIX LIN3 Bypass Volume", WM8991_OUTPUT_MIXER6,
222 		WM8991_RLI3ROVOL_SHIFT, WM8991_RLI3ROVOL_MASK, 1, out_mix_tlv),
223 	SOC_SINGLE_TLV("ROMIX AINLMUX Bypass Volume", WM8991_OUTPUT_MIXER6,
224 		WM8991_RLBROVOL_SHIFT, WM8991_RLBROVOL_MASK, 1, out_mix_tlv),
225 	SOC_SINGLE_TLV("ROMIX AINRMUX Bypass Volume", WM8991_OUTPUT_MIXER6,
226 		WM8991_RRBROVOL_SHIFT, WM8991_RRBROVOL_MASK, 1, out_mix_tlv),
227 
228 	/* LOUT */
229 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("LOUT Volume", WM8991_LEFT_OUTPUT_VOLUME,
230 		WM8991_LOUTVOL_SHIFT, WM8991_LOUTVOL_MASK, 0, out_pga_tlv),
231 	SOC_SINGLE("LOUT ZC", WM8991_LEFT_OUTPUT_VOLUME, WM8991_LOZC_BIT, 1, 0),
232 
233 	/* ROUT */
234 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("ROUT Volume", WM8991_RIGHT_OUTPUT_VOLUME,
235 		WM8991_ROUTVOL_SHIFT, WM8991_ROUTVOL_MASK, 0, out_pga_tlv),
236 	SOC_SINGLE("ROUT ZC", WM8991_RIGHT_OUTPUT_VOLUME, WM8991_ROZC_BIT, 1, 0),
237 
238 	/* LOPGA */
239 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("LOPGA Volume", WM8991_LEFT_OPGA_VOLUME,
240 		WM8991_LOPGAVOL_SHIFT, WM8991_LOPGAVOL_MASK, 0, out_pga_tlv),
241 	SOC_SINGLE("LOPGA ZC Switch", WM8991_LEFT_OPGA_VOLUME,
242 		WM8991_LOPGAZC_BIT, 1, 0),
243 
244 	/* ROPGA */
245 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("ROPGA Volume", WM8991_RIGHT_OPGA_VOLUME,
246 		WM8991_ROPGAVOL_SHIFT, WM8991_ROPGAVOL_MASK, 0, out_pga_tlv),
247 	SOC_SINGLE("ROPGA ZC Switch", WM8991_RIGHT_OPGA_VOLUME,
248 		WM8991_ROPGAZC_BIT, 1, 0),
249 
250 	SOC_SINGLE("LON Mute Switch", WM8991_LINE_OUTPUTS_VOLUME,
251 		WM8991_LONMUTE_BIT, 1, 0),
252 	SOC_SINGLE("LOP Mute Switch", WM8991_LINE_OUTPUTS_VOLUME,
253 		WM8991_LOPMUTE_BIT, 1, 0),
254 	SOC_SINGLE("LOP Attenuation Switch", WM8991_LINE_OUTPUTS_VOLUME,
255 		WM8991_LOATTN_BIT, 1, 0),
256 	SOC_SINGLE("RON Mute Switch", WM8991_LINE_OUTPUTS_VOLUME,
257 		WM8991_RONMUTE_BIT, 1, 0),
258 	SOC_SINGLE("ROP Mute Switch", WM8991_LINE_OUTPUTS_VOLUME,
259 		WM8991_ROPMUTE_BIT, 1, 0),
260 	SOC_SINGLE("ROP Attenuation Switch", WM8991_LINE_OUTPUTS_VOLUME,
261 		WM8991_ROATTN_BIT, 1, 0),
262 
263 	SOC_SINGLE("OUT3 Mute Switch", WM8991_OUT3_4_VOLUME,
264 		WM8991_OUT3MUTE_BIT, 1, 0),
265 	SOC_SINGLE("OUT3 Attenuation Switch", WM8991_OUT3_4_VOLUME,
266 		WM8991_OUT3ATTN_BIT, 1, 0),
267 
268 	SOC_SINGLE("OUT4 Mute Switch", WM8991_OUT3_4_VOLUME,
269 		WM8991_OUT4MUTE_BIT, 1, 0),
270 	SOC_SINGLE("OUT4 Attenuation Switch", WM8991_OUT3_4_VOLUME,
271 		WM8991_OUT4ATTN_BIT, 1, 0),
272 
273 	SOC_SINGLE("Speaker Mode Switch", WM8991_CLASSD1,
274 		WM8991_CDMODE_BIT, 1, 0),
275 
276 	SOC_SINGLE("Speaker Output Attenuation Volume", WM8991_SPEAKER_VOLUME,
277 		WM8991_SPKVOL_SHIFT, WM8991_SPKVOL_MASK, 0),
278 	SOC_SINGLE("Speaker DC Boost Volume", WM8991_CLASSD3,
279 		WM8991_DCGAIN_SHIFT, WM8991_DCGAIN_MASK, 0),
280 	SOC_SINGLE("Speaker AC Boost Volume", WM8991_CLASSD3,
281 		WM8991_ACGAIN_SHIFT, WM8991_ACGAIN_MASK, 0),
282 
283 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("Left DAC Digital Volume",
284 		WM8991_LEFT_DAC_DIGITAL_VOLUME,
285 		WM8991_DACL_VOL_SHIFT,
286 		WM8991_DACL_VOL_MASK,
287 		0,
288 		out_dac_tlv),
289 
290 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("Right DAC Digital Volume",
291 		WM8991_RIGHT_DAC_DIGITAL_VOLUME,
292 		WM8991_DACR_VOL_SHIFT,
293 		WM8991_DACR_VOL_MASK,
294 		0,
295 		out_dac_tlv),
296 
297 	SOC_ENUM("Left Digital Sidetone", wm8991_left_digital_sidetone_enum),
298 	SOC_ENUM("Right Digital Sidetone", wm8991_right_digital_sidetone_enum),
299 
300 	SOC_SINGLE_TLV("Left Digital Sidetone Volume", WM8991_DIGITAL_SIDE_TONE,
301 		WM8991_ADCL_DAC_SVOL_SHIFT, WM8991_ADCL_DAC_SVOL_MASK, 0,
302 		out_sidetone_tlv),
303 	SOC_SINGLE_TLV("Right Digital Sidetone Volume", WM8991_DIGITAL_SIDE_TONE,
304 		WM8991_ADCR_DAC_SVOL_SHIFT, WM8991_ADCR_DAC_SVOL_MASK, 0,
305 		out_sidetone_tlv),
306 
307 	SOC_SINGLE("ADC Digital High Pass Filter Switch", WM8991_ADC_CTRL,
308 		WM8991_ADC_HPF_ENA_BIT, 1, 0),
309 
310 	SOC_ENUM("ADC HPF Mode", wm8991_right_adcmode_enum),
311 
312 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("Left ADC Digital Volume",
313 		WM8991_LEFT_ADC_DIGITAL_VOLUME,
314 		WM8991_ADCL_VOL_SHIFT,
315 		WM8991_ADCL_VOL_MASK,
316 		0,
317 		in_adc_tlv),
318 
319 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("Right ADC Digital Volume",
320 		WM8991_RIGHT_ADC_DIGITAL_VOLUME,
321 		WM8991_ADCR_VOL_SHIFT,
322 		WM8991_ADCR_VOL_MASK,
323 		0,
324 		in_adc_tlv),
325 
326 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("LIN12 Volume",
327 		WM8991_LEFT_LINE_INPUT_1_2_VOLUME,
328 		WM8991_LIN12VOL_SHIFT,
329 		WM8991_LIN12VOL_MASK,
330 		0,
331 		in_pga_tlv),
332 
333 	SOC_SINGLE("LIN12 ZC Switch", WM8991_LEFT_LINE_INPUT_1_2_VOLUME,
334 		WM8991_LI12ZC_BIT, 1, 0),
335 
336 	SOC_SINGLE("LIN12 Mute Switch", WM8991_LEFT_LINE_INPUT_1_2_VOLUME,
337 		WM8991_LI12MUTE_BIT, 1, 0),
338 
339 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("LIN34 Volume",
340 		WM8991_LEFT_LINE_INPUT_3_4_VOLUME,
341 		WM8991_LIN34VOL_SHIFT,
342 		WM8991_LIN34VOL_MASK,
343 		0,
344 		in_pga_tlv),
345 
346 	SOC_SINGLE("LIN34 ZC Switch", WM8991_LEFT_LINE_INPUT_3_4_VOLUME,
347 		WM8991_LI34ZC_BIT, 1, 0),
348 
349 	SOC_SINGLE("LIN34 Mute Switch", WM8991_LEFT_LINE_INPUT_3_4_VOLUME,
350 		WM8991_LI34MUTE_BIT, 1, 0),
351 
352 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("RIN12 Volume",
353 		WM8991_RIGHT_LINE_INPUT_1_2_VOLUME,
354 		WM8991_RIN12VOL_SHIFT,
355 		WM8991_RIN12VOL_MASK,
356 		0,
357 		in_pga_tlv),
358 
359 	SOC_SINGLE("RIN12 ZC Switch", WM8991_RIGHT_LINE_INPUT_1_2_VOLUME,
360 		WM8991_RI12ZC_BIT, 1, 0),
361 
362 	SOC_SINGLE("RIN12 Mute Switch", WM8991_RIGHT_LINE_INPUT_1_2_VOLUME,
363 		WM8991_RI12MUTE_BIT, 1, 0),
364 
365 	SOC_WM899X_OUTPGA_SINGLE_R_TLV("RIN34 Volume",
366 		WM8991_RIGHT_LINE_INPUT_3_4_VOLUME,
367 		WM8991_RIN34VOL_SHIFT,
368 		WM8991_RIN34VOL_MASK,
369 		0,
370 		in_pga_tlv),
371 
372 	SOC_SINGLE("RIN34 ZC Switch", WM8991_RIGHT_LINE_INPUT_3_4_VOLUME,
373 		WM8991_RI34ZC_BIT, 1, 0),
374 
375 	SOC_SINGLE("RIN34 Mute Switch", WM8991_RIGHT_LINE_INPUT_3_4_VOLUME,
376 		WM8991_RI34MUTE_BIT, 1, 0),
377 };
378 
379 /*
380  * _DAPM_ Controls
381  */
382 static int outmixer_event(struct snd_soc_dapm_widget *w,
383 			  struct snd_kcontrol *kcontrol, int event)
384 {
385 	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
386 	u32 reg_shift = kcontrol->private_value & 0xfff;
387 	int ret = 0;
388 	u16 reg;
389 
390 	switch (reg_shift) {
391 	case WM8991_SPEAKER_MIXER | (WM8991_LDSPK_BIT << 8):
392 		reg = snd_soc_read(codec, WM8991_OUTPUT_MIXER1);
393 		if (reg & WM8991_LDLO) {
394 			printk(KERN_WARNING
395 			       "Cannot set as Output Mixer 1 LDLO Set\n");
396 			ret = -1;
397 		}
398 		break;
399 
400 	case WM8991_SPEAKER_MIXER | (WM8991_RDSPK_BIT << 8):
401 		reg = snd_soc_read(codec, WM8991_OUTPUT_MIXER2);
402 		if (reg & WM8991_RDRO) {
403 			printk(KERN_WARNING
404 			       "Cannot set as Output Mixer 2 RDRO Set\n");
405 			ret = -1;
406 		}
407 		break;
408 
409 	case WM8991_OUTPUT_MIXER1 | (WM8991_LDLO_BIT << 8):
410 		reg = snd_soc_read(codec, WM8991_SPEAKER_MIXER);
411 		if (reg & WM8991_LDSPK) {
412 			printk(KERN_WARNING
413 			       "Cannot set as Speaker Mixer LDSPK Set\n");
414 			ret = -1;
415 		}
416 		break;
417 
418 	case WM8991_OUTPUT_MIXER2 | (WM8991_RDRO_BIT << 8):
419 		reg = snd_soc_read(codec, WM8991_SPEAKER_MIXER);
420 		if (reg & WM8991_RDSPK) {
421 			printk(KERN_WARNING
422 			       "Cannot set as Speaker Mixer RDSPK Set\n");
423 			ret = -1;
424 		}
425 		break;
426 	}
427 
428 	return ret;
429 }
430 
431 /* INMIX dB values */
432 static const unsigned int in_mix_tlv[] = {
433 	TLV_DB_RANGE_HEAD(1),
434 	0, 7, TLV_DB_LINEAR_ITEM(-1200, 600),
435 };
436 
437 /* Left In PGA Connections */
438 static const struct snd_kcontrol_new wm8991_dapm_lin12_pga_controls[] = {
439 	SOC_DAPM_SINGLE("LIN1 Switch", WM8991_INPUT_MIXER2, WM8991_LMN1_BIT, 1, 0),
440 	SOC_DAPM_SINGLE("LIN2 Switch", WM8991_INPUT_MIXER2, WM8991_LMP2_BIT, 1, 0),
441 };
442 
443 static const struct snd_kcontrol_new wm8991_dapm_lin34_pga_controls[] = {
444 	SOC_DAPM_SINGLE("LIN3 Switch", WM8991_INPUT_MIXER2, WM8991_LMN3_BIT, 1, 0),
445 	SOC_DAPM_SINGLE("LIN4 Switch", WM8991_INPUT_MIXER2, WM8991_LMP4_BIT, 1, 0),
446 };
447 
448 /* Right In PGA Connections */
449 static const struct snd_kcontrol_new wm8991_dapm_rin12_pga_controls[] = {
450 	SOC_DAPM_SINGLE("RIN1 Switch", WM8991_INPUT_MIXER2, WM8991_RMN1_BIT, 1, 0),
451 	SOC_DAPM_SINGLE("RIN2 Switch", WM8991_INPUT_MIXER2, WM8991_RMP2_BIT, 1, 0),
452 };
453 
454 static const struct snd_kcontrol_new wm8991_dapm_rin34_pga_controls[] = {
455 	SOC_DAPM_SINGLE("RIN3 Switch", WM8991_INPUT_MIXER2, WM8991_RMN3_BIT, 1, 0),
456 	SOC_DAPM_SINGLE("RIN4 Switch", WM8991_INPUT_MIXER2, WM8991_RMP4_BIT, 1, 0),
457 };
458 
459 /* INMIXL */
460 static const struct snd_kcontrol_new wm8991_dapm_inmixl_controls[] = {
461 	SOC_DAPM_SINGLE_TLV("Record Left Volume", WM8991_INPUT_MIXER3,
462 		WM8991_LDBVOL_SHIFT, WM8991_LDBVOL_MASK, 0, in_mix_tlv),
463 	SOC_DAPM_SINGLE_TLV("LIN2 Volume", WM8991_INPUT_MIXER5, WM8991_LI2BVOL_SHIFT,
464 		7, 0, in_mix_tlv),
465 	SOC_DAPM_SINGLE("LINPGA12 Switch", WM8991_INPUT_MIXER3, WM8991_L12MNB_BIT,
466 		1, 0),
467 	SOC_DAPM_SINGLE("LINPGA34 Switch", WM8991_INPUT_MIXER3, WM8991_L34MNB_BIT,
468 		1, 0),
469 };
470 
471 /* INMIXR */
472 static const struct snd_kcontrol_new wm8991_dapm_inmixr_controls[] = {
473 	SOC_DAPM_SINGLE_TLV("Record Right Volume", WM8991_INPUT_MIXER4,
474 		WM8991_RDBVOL_SHIFT, WM8991_RDBVOL_MASK, 0, in_mix_tlv),
475 	SOC_DAPM_SINGLE_TLV("RIN2 Volume", WM8991_INPUT_MIXER6, WM8991_RI2BVOL_SHIFT,
476 		7, 0, in_mix_tlv),
477 	SOC_DAPM_SINGLE("RINPGA12 Switch", WM8991_INPUT_MIXER3, WM8991_L12MNB_BIT,
478 		1, 0),
479 	SOC_DAPM_SINGLE("RINPGA34 Switch", WM8991_INPUT_MIXER3, WM8991_L34MNB_BIT,
480 		1, 0),
481 };
482 
483 /* AINLMUX */
484 static const char *wm8991_ainlmux[] =
485 {"INMIXL Mix", "RXVOICE Mix", "DIFFINL Mix"};
486 
487 static SOC_ENUM_SINGLE_DECL(wm8991_ainlmux_enum,
488 			    WM8991_INPUT_MIXER1, WM8991_AINLMODE_SHIFT,
489 			    wm8991_ainlmux);
490 
491 static const struct snd_kcontrol_new wm8991_dapm_ainlmux_controls =
492 	SOC_DAPM_ENUM("Route", wm8991_ainlmux_enum);
493 
494 /* DIFFINL */
495 
496 /* AINRMUX */
497 static const char *wm8991_ainrmux[] =
498 {"INMIXR Mix", "RXVOICE Mix", "DIFFINR Mix"};
499 
500 static SOC_ENUM_SINGLE_DECL(wm8991_ainrmux_enum,
501 			    WM8991_INPUT_MIXER1, WM8991_AINRMODE_SHIFT,
502 			    wm8991_ainrmux);
503 
504 static const struct snd_kcontrol_new wm8991_dapm_ainrmux_controls =
505 	SOC_DAPM_ENUM("Route", wm8991_ainrmux_enum);
506 
507 /* RXVOICE */
508 static const struct snd_kcontrol_new wm8991_dapm_rxvoice_controls[] = {
509 	SOC_DAPM_SINGLE_TLV("LIN4RXN", WM8991_INPUT_MIXER5, WM8991_LR4BVOL_SHIFT,
510 		WM8991_LR4BVOL_MASK, 0, in_mix_tlv),
511 	SOC_DAPM_SINGLE_TLV("RIN4RXP", WM8991_INPUT_MIXER6, WM8991_RL4BVOL_SHIFT,
512 		WM8991_RL4BVOL_MASK, 0, in_mix_tlv),
513 };
514 
515 /* LOMIX */
516 static const struct snd_kcontrol_new wm8991_dapm_lomix_controls[] = {
517 	SOC_DAPM_SINGLE("LOMIX Right ADC Bypass Switch", WM8991_OUTPUT_MIXER1,
518 		WM8991_LRBLO_BIT, 1, 0),
519 	SOC_DAPM_SINGLE("LOMIX Left ADC Bypass Switch", WM8991_OUTPUT_MIXER1,
520 		WM8991_LLBLO_BIT, 1, 0),
521 	SOC_DAPM_SINGLE("LOMIX RIN3 Bypass Switch", WM8991_OUTPUT_MIXER1,
522 		WM8991_LRI3LO_BIT, 1, 0),
523 	SOC_DAPM_SINGLE("LOMIX LIN3 Bypass Switch", WM8991_OUTPUT_MIXER1,
524 		WM8991_LLI3LO_BIT, 1, 0),
525 	SOC_DAPM_SINGLE("LOMIX RIN12 PGA Bypass Switch", WM8991_OUTPUT_MIXER1,
526 		WM8991_LR12LO_BIT, 1, 0),
527 	SOC_DAPM_SINGLE("LOMIX LIN12 PGA Bypass Switch", WM8991_OUTPUT_MIXER1,
528 		WM8991_LL12LO_BIT, 1, 0),
529 	SOC_DAPM_SINGLE("LOMIX Left DAC Switch", WM8991_OUTPUT_MIXER1,
530 		WM8991_LDLO_BIT, 1, 0),
531 };
532 
533 /* ROMIX */
534 static const struct snd_kcontrol_new wm8991_dapm_romix_controls[] = {
535 	SOC_DAPM_SINGLE("ROMIX Left ADC Bypass Switch", WM8991_OUTPUT_MIXER2,
536 		WM8991_RLBRO_BIT, 1, 0),
537 	SOC_DAPM_SINGLE("ROMIX Right ADC Bypass Switch", WM8991_OUTPUT_MIXER2,
538 		WM8991_RRBRO_BIT, 1, 0),
539 	SOC_DAPM_SINGLE("ROMIX LIN3 Bypass Switch", WM8991_OUTPUT_MIXER2,
540 		WM8991_RLI3RO_BIT, 1, 0),
541 	SOC_DAPM_SINGLE("ROMIX RIN3 Bypass Switch", WM8991_OUTPUT_MIXER2,
542 		WM8991_RRI3RO_BIT, 1, 0),
543 	SOC_DAPM_SINGLE("ROMIX LIN12 PGA Bypass Switch", WM8991_OUTPUT_MIXER2,
544 		WM8991_RL12RO_BIT, 1, 0),
545 	SOC_DAPM_SINGLE("ROMIX RIN12 PGA Bypass Switch", WM8991_OUTPUT_MIXER2,
546 		WM8991_RR12RO_BIT, 1, 0),
547 	SOC_DAPM_SINGLE("ROMIX Right DAC Switch", WM8991_OUTPUT_MIXER2,
548 		WM8991_RDRO_BIT, 1, 0),
549 };
550 
551 /* LONMIX */
552 static const struct snd_kcontrol_new wm8991_dapm_lonmix_controls[] = {
553 	SOC_DAPM_SINGLE("LONMIX Left Mixer PGA Switch", WM8991_LINE_MIXER1,
554 		WM8991_LLOPGALON_BIT, 1, 0),
555 	SOC_DAPM_SINGLE("LONMIX Right Mixer PGA Switch", WM8991_LINE_MIXER1,
556 		WM8991_LROPGALON_BIT, 1, 0),
557 	SOC_DAPM_SINGLE("LONMIX Inverted LOP Switch", WM8991_LINE_MIXER1,
558 		WM8991_LOPLON_BIT, 1, 0),
559 };
560 
561 /* LOPMIX */
562 static const struct snd_kcontrol_new wm8991_dapm_lopmix_controls[] = {
563 	SOC_DAPM_SINGLE("LOPMIX Right Mic Bypass Switch", WM8991_LINE_MIXER1,
564 		WM8991_LR12LOP_BIT, 1, 0),
565 	SOC_DAPM_SINGLE("LOPMIX Left Mic Bypass Switch", WM8991_LINE_MIXER1,
566 		WM8991_LL12LOP_BIT, 1, 0),
567 	SOC_DAPM_SINGLE("LOPMIX Left Mixer PGA Switch", WM8991_LINE_MIXER1,
568 		WM8991_LLOPGALOP_BIT, 1, 0),
569 };
570 
571 /* RONMIX */
572 static const struct snd_kcontrol_new wm8991_dapm_ronmix_controls[] = {
573 	SOC_DAPM_SINGLE("RONMIX Right Mixer PGA Switch", WM8991_LINE_MIXER2,
574 		WM8991_RROPGARON_BIT, 1, 0),
575 	SOC_DAPM_SINGLE("RONMIX Left Mixer PGA Switch", WM8991_LINE_MIXER2,
576 		WM8991_RLOPGARON_BIT, 1, 0),
577 	SOC_DAPM_SINGLE("RONMIX Inverted ROP Switch", WM8991_LINE_MIXER2,
578 		WM8991_ROPRON_BIT, 1, 0),
579 };
580 
581 /* ROPMIX */
582 static const struct snd_kcontrol_new wm8991_dapm_ropmix_controls[] = {
583 	SOC_DAPM_SINGLE("ROPMIX Left Mic Bypass Switch", WM8991_LINE_MIXER2,
584 		WM8991_RL12ROP_BIT, 1, 0),
585 	SOC_DAPM_SINGLE("ROPMIX Right Mic Bypass Switch", WM8991_LINE_MIXER2,
586 		WM8991_RR12ROP_BIT, 1, 0),
587 	SOC_DAPM_SINGLE("ROPMIX Right Mixer PGA Switch", WM8991_LINE_MIXER2,
588 		WM8991_RROPGAROP_BIT, 1, 0),
589 };
590 
591 /* OUT3MIX */
592 static const struct snd_kcontrol_new wm8991_dapm_out3mix_controls[] = {
593 	SOC_DAPM_SINGLE("OUT3MIX LIN4RXN Bypass Switch", WM8991_OUT3_4_MIXER,
594 		WM8991_LI4O3_BIT, 1, 0),
595 	SOC_DAPM_SINGLE("OUT3MIX Left Out PGA Switch", WM8991_OUT3_4_MIXER,
596 		WM8991_LPGAO3_BIT, 1, 0),
597 };
598 
599 /* OUT4MIX */
600 static const struct snd_kcontrol_new wm8991_dapm_out4mix_controls[] = {
601 	SOC_DAPM_SINGLE("OUT4MIX Right Out PGA Switch", WM8991_OUT3_4_MIXER,
602 		WM8991_RPGAO4_BIT, 1, 0),
603 	SOC_DAPM_SINGLE("OUT4MIX RIN4RXP Bypass Switch", WM8991_OUT3_4_MIXER,
604 		WM8991_RI4O4_BIT, 1, 0),
605 };
606 
607 /* SPKMIX */
608 static const struct snd_kcontrol_new wm8991_dapm_spkmix_controls[] = {
609 	SOC_DAPM_SINGLE("SPKMIX LIN2 Bypass Switch", WM8991_SPEAKER_MIXER,
610 		WM8991_LI2SPK_BIT, 1, 0),
611 	SOC_DAPM_SINGLE("SPKMIX LADC Bypass Switch", WM8991_SPEAKER_MIXER,
612 		WM8991_LB2SPK_BIT, 1, 0),
613 	SOC_DAPM_SINGLE("SPKMIX Left Mixer PGA Switch", WM8991_SPEAKER_MIXER,
614 		WM8991_LOPGASPK_BIT, 1, 0),
615 	SOC_DAPM_SINGLE("SPKMIX Left DAC Switch", WM8991_SPEAKER_MIXER,
616 		WM8991_LDSPK_BIT, 1, 0),
617 	SOC_DAPM_SINGLE("SPKMIX Right DAC Switch", WM8991_SPEAKER_MIXER,
618 		WM8991_RDSPK_BIT, 1, 0),
619 	SOC_DAPM_SINGLE("SPKMIX Right Mixer PGA Switch", WM8991_SPEAKER_MIXER,
620 		WM8991_ROPGASPK_BIT, 1, 0),
621 	SOC_DAPM_SINGLE("SPKMIX RADC Bypass Switch", WM8991_SPEAKER_MIXER,
622 		WM8991_RL12ROP_BIT, 1, 0),
623 	SOC_DAPM_SINGLE("SPKMIX RIN2 Bypass Switch", WM8991_SPEAKER_MIXER,
624 		WM8991_RI2SPK_BIT, 1, 0),
625 };
626 
627 static const struct snd_soc_dapm_widget wm8991_dapm_widgets[] = {
628 	/* Input Side */
629 	/* Input Lines */
630 	SND_SOC_DAPM_INPUT("LIN1"),
631 	SND_SOC_DAPM_INPUT("LIN2"),
632 	SND_SOC_DAPM_INPUT("LIN3"),
633 	SND_SOC_DAPM_INPUT("LIN4RXN"),
634 	SND_SOC_DAPM_INPUT("RIN3"),
635 	SND_SOC_DAPM_INPUT("RIN4RXP"),
636 	SND_SOC_DAPM_INPUT("RIN1"),
637 	SND_SOC_DAPM_INPUT("RIN2"),
638 	SND_SOC_DAPM_INPUT("Internal ADC Source"),
639 
640 	SND_SOC_DAPM_SUPPLY("INL", WM8991_POWER_MANAGEMENT_2,
641 			    WM8991_AINL_ENA_BIT, 0, NULL, 0),
642 	SND_SOC_DAPM_SUPPLY("INR", WM8991_POWER_MANAGEMENT_2,
643 			    WM8991_AINR_ENA_BIT, 0, NULL, 0),
644 
645 	/* DACs */
646 	SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8991_POWER_MANAGEMENT_2,
647 		WM8991_ADCL_ENA_BIT, 0),
648 	SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8991_POWER_MANAGEMENT_2,
649 		WM8991_ADCR_ENA_BIT, 0),
650 
651 	/* Input PGAs */
652 	SND_SOC_DAPM_MIXER("LIN12 PGA", WM8991_POWER_MANAGEMENT_2, WM8991_LIN12_ENA_BIT,
653 		0, &wm8991_dapm_lin12_pga_controls[0],
654 		ARRAY_SIZE(wm8991_dapm_lin12_pga_controls)),
655 	SND_SOC_DAPM_MIXER("LIN34 PGA", WM8991_POWER_MANAGEMENT_2, WM8991_LIN34_ENA_BIT,
656 		0, &wm8991_dapm_lin34_pga_controls[0],
657 		ARRAY_SIZE(wm8991_dapm_lin34_pga_controls)),
658 	SND_SOC_DAPM_MIXER("RIN12 PGA", WM8991_POWER_MANAGEMENT_2, WM8991_RIN12_ENA_BIT,
659 		0, &wm8991_dapm_rin12_pga_controls[0],
660 		ARRAY_SIZE(wm8991_dapm_rin12_pga_controls)),
661 	SND_SOC_DAPM_MIXER("RIN34 PGA", WM8991_POWER_MANAGEMENT_2, WM8991_RIN34_ENA_BIT,
662 		0, &wm8991_dapm_rin34_pga_controls[0],
663 		ARRAY_SIZE(wm8991_dapm_rin34_pga_controls)),
664 
665 	/* INMIXL */
666 	SND_SOC_DAPM_MIXER("INMIXL", SND_SOC_NOPM, 0, 0,
667 		&wm8991_dapm_inmixl_controls[0],
668 		ARRAY_SIZE(wm8991_dapm_inmixl_controls)),
669 
670 	/* AINLMUX */
671 	SND_SOC_DAPM_MUX("AINLMUX", SND_SOC_NOPM, 0, 0,
672 		&wm8991_dapm_ainlmux_controls),
673 
674 	/* INMIXR */
675 	SND_SOC_DAPM_MIXER("INMIXR", SND_SOC_NOPM, 0, 0,
676 		&wm8991_dapm_inmixr_controls[0],
677 		ARRAY_SIZE(wm8991_dapm_inmixr_controls)),
678 
679 	/* AINRMUX */
680 	SND_SOC_DAPM_MUX("AINRMUX", SND_SOC_NOPM, 0, 0,
681 		&wm8991_dapm_ainrmux_controls),
682 
683 	/* Output Side */
684 	/* DACs */
685 	SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8991_POWER_MANAGEMENT_3,
686 		WM8991_DACL_ENA_BIT, 0),
687 	SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8991_POWER_MANAGEMENT_3,
688 		WM8991_DACR_ENA_BIT, 0),
689 
690 	/* LOMIX */
691 	SND_SOC_DAPM_MIXER_E("LOMIX", WM8991_POWER_MANAGEMENT_3, WM8991_LOMIX_ENA_BIT,
692 		0, &wm8991_dapm_lomix_controls[0],
693 		ARRAY_SIZE(wm8991_dapm_lomix_controls),
694 		outmixer_event, SND_SOC_DAPM_PRE_REG),
695 
696 	/* LONMIX */
697 	SND_SOC_DAPM_MIXER("LONMIX", WM8991_POWER_MANAGEMENT_3, WM8991_LON_ENA_BIT, 0,
698 		&wm8991_dapm_lonmix_controls[0],
699 		ARRAY_SIZE(wm8991_dapm_lonmix_controls)),
700 
701 	/* LOPMIX */
702 	SND_SOC_DAPM_MIXER("LOPMIX", WM8991_POWER_MANAGEMENT_3, WM8991_LOP_ENA_BIT, 0,
703 		&wm8991_dapm_lopmix_controls[0],
704 		ARRAY_SIZE(wm8991_dapm_lopmix_controls)),
705 
706 	/* OUT3MIX */
707 	SND_SOC_DAPM_MIXER("OUT3MIX", WM8991_POWER_MANAGEMENT_1, WM8991_OUT3_ENA_BIT, 0,
708 		&wm8991_dapm_out3mix_controls[0],
709 		ARRAY_SIZE(wm8991_dapm_out3mix_controls)),
710 
711 	/* SPKMIX */
712 	SND_SOC_DAPM_MIXER_E("SPKMIX", WM8991_POWER_MANAGEMENT_1, WM8991_SPK_ENA_BIT, 0,
713 		&wm8991_dapm_spkmix_controls[0],
714 		ARRAY_SIZE(wm8991_dapm_spkmix_controls), outmixer_event,
715 		SND_SOC_DAPM_PRE_REG),
716 
717 	/* OUT4MIX */
718 	SND_SOC_DAPM_MIXER("OUT4MIX", WM8991_POWER_MANAGEMENT_1, WM8991_OUT4_ENA_BIT, 0,
719 		&wm8991_dapm_out4mix_controls[0],
720 		ARRAY_SIZE(wm8991_dapm_out4mix_controls)),
721 
722 	/* ROPMIX */
723 	SND_SOC_DAPM_MIXER("ROPMIX", WM8991_POWER_MANAGEMENT_3, WM8991_ROP_ENA_BIT, 0,
724 		&wm8991_dapm_ropmix_controls[0],
725 		ARRAY_SIZE(wm8991_dapm_ropmix_controls)),
726 
727 	/* RONMIX */
728 	SND_SOC_DAPM_MIXER("RONMIX", WM8991_POWER_MANAGEMENT_3, WM8991_RON_ENA_BIT, 0,
729 		&wm8991_dapm_ronmix_controls[0],
730 		ARRAY_SIZE(wm8991_dapm_ronmix_controls)),
731 
732 	/* ROMIX */
733 	SND_SOC_DAPM_MIXER_E("ROMIX", WM8991_POWER_MANAGEMENT_3, WM8991_ROMIX_ENA_BIT,
734 		0, &wm8991_dapm_romix_controls[0],
735 		ARRAY_SIZE(wm8991_dapm_romix_controls),
736 		outmixer_event, SND_SOC_DAPM_PRE_REG),
737 
738 	/* LOUT PGA */
739 	SND_SOC_DAPM_PGA("LOUT PGA", WM8991_POWER_MANAGEMENT_1, WM8991_LOUT_ENA_BIT, 0,
740 		NULL, 0),
741 
742 	/* ROUT PGA */
743 	SND_SOC_DAPM_PGA("ROUT PGA", WM8991_POWER_MANAGEMENT_1, WM8991_ROUT_ENA_BIT, 0,
744 		NULL, 0),
745 
746 	/* LOPGA */
747 	SND_SOC_DAPM_PGA("LOPGA", WM8991_POWER_MANAGEMENT_3, WM8991_LOPGA_ENA_BIT, 0,
748 		NULL, 0),
749 
750 	/* ROPGA */
751 	SND_SOC_DAPM_PGA("ROPGA", WM8991_POWER_MANAGEMENT_3, WM8991_ROPGA_ENA_BIT, 0,
752 		NULL, 0),
753 
754 	/* MICBIAS */
755 	SND_SOC_DAPM_SUPPLY("MICBIAS", WM8991_POWER_MANAGEMENT_1,
756 			    WM8991_MICBIAS_ENA_BIT, 0, NULL, 0),
757 
758 	SND_SOC_DAPM_OUTPUT("LON"),
759 	SND_SOC_DAPM_OUTPUT("LOP"),
760 	SND_SOC_DAPM_OUTPUT("OUT3"),
761 	SND_SOC_DAPM_OUTPUT("LOUT"),
762 	SND_SOC_DAPM_OUTPUT("SPKN"),
763 	SND_SOC_DAPM_OUTPUT("SPKP"),
764 	SND_SOC_DAPM_OUTPUT("ROUT"),
765 	SND_SOC_DAPM_OUTPUT("OUT4"),
766 	SND_SOC_DAPM_OUTPUT("ROP"),
767 	SND_SOC_DAPM_OUTPUT("RON"),
768 	SND_SOC_DAPM_OUTPUT("OUT"),
769 
770 	SND_SOC_DAPM_OUTPUT("Internal DAC Sink"),
771 };
772 
773 static const struct snd_soc_dapm_route wm8991_dapm_routes[] = {
774 	/* Make DACs turn on when playing even if not mixed into any outputs */
775 	{"Internal DAC Sink", NULL, "Left DAC"},
776 	{"Internal DAC Sink", NULL, "Right DAC"},
777 
778 	/* Make ADCs turn on when recording even if not mixed from any inputs */
779 	{"Left ADC", NULL, "Internal ADC Source"},
780 	{"Right ADC", NULL, "Internal ADC Source"},
781 
782 	/* Input Side */
783 	{"INMIXL", NULL, "INL"},
784 	{"AINLMUX", NULL, "INL"},
785 	{"INMIXR", NULL, "INR"},
786 	{"AINRMUX", NULL, "INR"},
787 	/* LIN12 PGA */
788 	{"LIN12 PGA", "LIN1 Switch", "LIN1"},
789 	{"LIN12 PGA", "LIN2 Switch", "LIN2"},
790 	/* LIN34 PGA */
791 	{"LIN34 PGA", "LIN3 Switch", "LIN3"},
792 	{"LIN34 PGA", "LIN4 Switch", "LIN4RXN"},
793 	/* INMIXL */
794 	{"INMIXL", "Record Left Volume", "LOMIX"},
795 	{"INMIXL", "LIN2 Volume", "LIN2"},
796 	{"INMIXL", "LINPGA12 Switch", "LIN12 PGA"},
797 	{"INMIXL", "LINPGA34 Switch", "LIN34 PGA"},
798 	/* AINLMUX */
799 	{"AINLMUX", "INMIXL Mix", "INMIXL"},
800 	{"AINLMUX", "DIFFINL Mix", "LIN12 PGA"},
801 	{"AINLMUX", "DIFFINL Mix", "LIN34 PGA"},
802 	{"AINLMUX", "RXVOICE Mix", "LIN4RXN"},
803 	{"AINLMUX", "RXVOICE Mix", "RIN4RXP"},
804 	/* ADC */
805 	{"Left ADC", NULL, "AINLMUX"},
806 
807 	/* RIN12 PGA */
808 	{"RIN12 PGA", "RIN1 Switch", "RIN1"},
809 	{"RIN12 PGA", "RIN2 Switch", "RIN2"},
810 	/* RIN34 PGA */
811 	{"RIN34 PGA", "RIN3 Switch", "RIN3"},
812 	{"RIN34 PGA", "RIN4 Switch", "RIN4RXP"},
813 	/* INMIXL */
814 	{"INMIXR", "Record Right Volume", "ROMIX"},
815 	{"INMIXR", "RIN2 Volume", "RIN2"},
816 	{"INMIXR", "RINPGA12 Switch", "RIN12 PGA"},
817 	{"INMIXR", "RINPGA34 Switch", "RIN34 PGA"},
818 	/* AINRMUX */
819 	{"AINRMUX", "INMIXR Mix", "INMIXR"},
820 	{"AINRMUX", "DIFFINR Mix", "RIN12 PGA"},
821 	{"AINRMUX", "DIFFINR Mix", "RIN34 PGA"},
822 	{"AINRMUX", "RXVOICE Mix", "LIN4RXN"},
823 	{"AINRMUX", "RXVOICE Mix", "RIN4RXP"},
824 	/* ADC */
825 	{"Right ADC", NULL, "AINRMUX"},
826 
827 	/* LOMIX */
828 	{"LOMIX", "LOMIX RIN3 Bypass Switch", "RIN3"},
829 	{"LOMIX", "LOMIX LIN3 Bypass Switch", "LIN3"},
830 	{"LOMIX", "LOMIX LIN12 PGA Bypass Switch", "LIN12 PGA"},
831 	{"LOMIX", "LOMIX RIN12 PGA Bypass Switch", "RIN12 PGA"},
832 	{"LOMIX", "LOMIX Right ADC Bypass Switch", "AINRMUX"},
833 	{"LOMIX", "LOMIX Left ADC Bypass Switch", "AINLMUX"},
834 	{"LOMIX", "LOMIX Left DAC Switch", "Left DAC"},
835 
836 	/* ROMIX */
837 	{"ROMIX", "ROMIX RIN3 Bypass Switch", "RIN3"},
838 	{"ROMIX", "ROMIX LIN3 Bypass Switch", "LIN3"},
839 	{"ROMIX", "ROMIX LIN12 PGA Bypass Switch", "LIN12 PGA"},
840 	{"ROMIX", "ROMIX RIN12 PGA Bypass Switch", "RIN12 PGA"},
841 	{"ROMIX", "ROMIX Right ADC Bypass Switch", "AINRMUX"},
842 	{"ROMIX", "ROMIX Left ADC Bypass Switch", "AINLMUX"},
843 	{"ROMIX", "ROMIX Right DAC Switch", "Right DAC"},
844 
845 	/* SPKMIX */
846 	{"SPKMIX", "SPKMIX LIN2 Bypass Switch", "LIN2"},
847 	{"SPKMIX", "SPKMIX RIN2 Bypass Switch", "RIN2"},
848 	{"SPKMIX", "SPKMIX LADC Bypass Switch", "AINLMUX"},
849 	{"SPKMIX", "SPKMIX RADC Bypass Switch", "AINRMUX"},
850 	{"SPKMIX", "SPKMIX Left Mixer PGA Switch", "LOPGA"},
851 	{"SPKMIX", "SPKMIX Right Mixer PGA Switch", "ROPGA"},
852 	{"SPKMIX", "SPKMIX Right DAC Switch", "Right DAC"},
853 	{"SPKMIX", "SPKMIX Left DAC Switch", "Right DAC"},
854 
855 	/* LONMIX */
856 	{"LONMIX", "LONMIX Left Mixer PGA Switch", "LOPGA"},
857 	{"LONMIX", "LONMIX Right Mixer PGA Switch", "ROPGA"},
858 	{"LONMIX", "LONMIX Inverted LOP Switch", "LOPMIX"},
859 
860 	/* LOPMIX */
861 	{"LOPMIX", "LOPMIX Right Mic Bypass Switch", "RIN12 PGA"},
862 	{"LOPMIX", "LOPMIX Left Mic Bypass Switch", "LIN12 PGA"},
863 	{"LOPMIX", "LOPMIX Left Mixer PGA Switch", "LOPGA"},
864 
865 	/* OUT3MIX */
866 	{"OUT3MIX", "OUT3MIX LIN4RXN Bypass Switch", "LIN4RXN"},
867 	{"OUT3MIX", "OUT3MIX Left Out PGA Switch", "LOPGA"},
868 
869 	/* OUT4MIX */
870 	{"OUT4MIX", "OUT4MIX Right Out PGA Switch", "ROPGA"},
871 	{"OUT4MIX", "OUT4MIX RIN4RXP Bypass Switch", "RIN4RXP"},
872 
873 	/* RONMIX */
874 	{"RONMIX", "RONMIX Right Mixer PGA Switch", "ROPGA"},
875 	{"RONMIX", "RONMIX Left Mixer PGA Switch", "LOPGA"},
876 	{"RONMIX", "RONMIX Inverted ROP Switch", "ROPMIX"},
877 
878 	/* ROPMIX */
879 	{"ROPMIX", "ROPMIX Left Mic Bypass Switch", "LIN12 PGA"},
880 	{"ROPMIX", "ROPMIX Right Mic Bypass Switch", "RIN12 PGA"},
881 	{"ROPMIX", "ROPMIX Right Mixer PGA Switch", "ROPGA"},
882 
883 	/* Out Mixer PGAs */
884 	{"LOPGA", NULL, "LOMIX"},
885 	{"ROPGA", NULL, "ROMIX"},
886 
887 	{"LOUT PGA", NULL, "LOMIX"},
888 	{"ROUT PGA", NULL, "ROMIX"},
889 
890 	/* Output Pins */
891 	{"LON", NULL, "LONMIX"},
892 	{"LOP", NULL, "LOPMIX"},
893 	{"OUT", NULL, "OUT3MIX"},
894 	{"LOUT", NULL, "LOUT PGA"},
895 	{"SPKN", NULL, "SPKMIX"},
896 	{"ROUT", NULL, "ROUT PGA"},
897 	{"OUT4", NULL, "OUT4MIX"},
898 	{"ROP", NULL, "ROPMIX"},
899 	{"RON", NULL, "RONMIX"},
900 };
901 
902 /* PLL divisors */
903 struct _pll_div {
904 	u32 div2;
905 	u32 n;
906 	u32 k;
907 };
908 
909 /* The size in bits of the pll divide multiplied by 10
910  * to allow rounding later */
911 #define FIXED_PLL_SIZE ((1 << 16) * 10)
912 
913 static void pll_factors(struct _pll_div *pll_div, unsigned int target,
914 			unsigned int source)
915 {
916 	u64 Kpart;
917 	unsigned int K, Ndiv, Nmod;
918 
919 
920 	Ndiv = target / source;
921 	if (Ndiv < 6) {
922 		source >>= 1;
923 		pll_div->div2 = 1;
924 		Ndiv = target / source;
925 	} else
926 		pll_div->div2 = 0;
927 
928 	if ((Ndiv < 6) || (Ndiv > 12))
929 		printk(KERN_WARNING
930 		       "WM8991 N value outwith recommended range! N = %d\n", Ndiv);
931 
932 	pll_div->n = Ndiv;
933 	Nmod = target % source;
934 	Kpart = FIXED_PLL_SIZE * (long long)Nmod;
935 
936 	do_div(Kpart, source);
937 
938 	K = Kpart & 0xFFFFFFFF;
939 
940 	/* Check if we need to round */
941 	if ((K % 10) >= 5)
942 		K += 5;
943 
944 	/* Move down to proper range now rounding is done */
945 	K /= 10;
946 
947 	pll_div->k = K;
948 }
949 
950 static int wm8991_set_dai_pll(struct snd_soc_dai *codec_dai,
951 			      int pll_id, int src, unsigned int freq_in, unsigned int freq_out)
952 {
953 	u16 reg;
954 	struct snd_soc_codec *codec = codec_dai->codec;
955 	struct _pll_div pll_div;
956 
957 	if (freq_in && freq_out) {
958 		pll_factors(&pll_div, freq_out * 4, freq_in);
959 
960 		/* Turn on PLL */
961 		reg = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_2);
962 		reg |= WM8991_PLL_ENA;
963 		snd_soc_write(codec, WM8991_POWER_MANAGEMENT_2, reg);
964 
965 		/* sysclk comes from PLL */
966 		reg = snd_soc_read(codec, WM8991_CLOCKING_2);
967 		snd_soc_write(codec, WM8991_CLOCKING_2, reg | WM8991_SYSCLK_SRC);
968 
969 		/* set up N , fractional mode and pre-divisor if necessary */
970 		snd_soc_write(codec, WM8991_PLL1, pll_div.n | WM8991_SDM |
971 			      (pll_div.div2 ? WM8991_PRESCALE : 0));
972 		snd_soc_write(codec, WM8991_PLL2, (u8)(pll_div.k>>8));
973 		snd_soc_write(codec, WM8991_PLL3, (u8)(pll_div.k & 0xFF));
974 	} else {
975 		/* Turn on PLL */
976 		reg = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_2);
977 		reg &= ~WM8991_PLL_ENA;
978 		snd_soc_write(codec, WM8991_POWER_MANAGEMENT_2, reg);
979 	}
980 	return 0;
981 }
982 
983 /*
984  * Set's ADC and Voice DAC format.
985  */
986 static int wm8991_set_dai_fmt(struct snd_soc_dai *codec_dai,
987 			      unsigned int fmt)
988 {
989 	struct snd_soc_codec *codec = codec_dai->codec;
990 	u16 audio1, audio3;
991 
992 	audio1 = snd_soc_read(codec, WM8991_AUDIO_INTERFACE_1);
993 	audio3 = snd_soc_read(codec, WM8991_AUDIO_INTERFACE_3);
994 
995 	/* set master/slave audio interface */
996 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
997 	case SND_SOC_DAIFMT_CBS_CFS:
998 		audio3 &= ~WM8991_AIF_MSTR1;
999 		break;
1000 	case SND_SOC_DAIFMT_CBM_CFM:
1001 		audio3 |= WM8991_AIF_MSTR1;
1002 		break;
1003 	default:
1004 		return -EINVAL;
1005 	}
1006 
1007 	audio1 &= ~WM8991_AIF_FMT_MASK;
1008 
1009 	/* interface format */
1010 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1011 	case SND_SOC_DAIFMT_I2S:
1012 		audio1 |= WM8991_AIF_TMF_I2S;
1013 		audio1 &= ~WM8991_AIF_LRCLK_INV;
1014 		break;
1015 	case SND_SOC_DAIFMT_RIGHT_J:
1016 		audio1 |= WM8991_AIF_TMF_RIGHTJ;
1017 		audio1 &= ~WM8991_AIF_LRCLK_INV;
1018 		break;
1019 	case SND_SOC_DAIFMT_LEFT_J:
1020 		audio1 |= WM8991_AIF_TMF_LEFTJ;
1021 		audio1 &= ~WM8991_AIF_LRCLK_INV;
1022 		break;
1023 	case SND_SOC_DAIFMT_DSP_A:
1024 		audio1 |= WM8991_AIF_TMF_DSP;
1025 		audio1 &= ~WM8991_AIF_LRCLK_INV;
1026 		break;
1027 	case SND_SOC_DAIFMT_DSP_B:
1028 		audio1 |= WM8991_AIF_TMF_DSP | WM8991_AIF_LRCLK_INV;
1029 		break;
1030 	default:
1031 		return -EINVAL;
1032 	}
1033 
1034 	snd_soc_write(codec, WM8991_AUDIO_INTERFACE_1, audio1);
1035 	snd_soc_write(codec, WM8991_AUDIO_INTERFACE_3, audio3);
1036 	return 0;
1037 }
1038 
1039 static int wm8991_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
1040 				 int div_id, int div)
1041 {
1042 	struct snd_soc_codec *codec = codec_dai->codec;
1043 	u16 reg;
1044 
1045 	switch (div_id) {
1046 	case WM8991_MCLK_DIV:
1047 		reg = snd_soc_read(codec, WM8991_CLOCKING_2) &
1048 		      ~WM8991_MCLK_DIV_MASK;
1049 		snd_soc_write(codec, WM8991_CLOCKING_2, reg | div);
1050 		break;
1051 	case WM8991_DACCLK_DIV:
1052 		reg = snd_soc_read(codec, WM8991_CLOCKING_2) &
1053 		      ~WM8991_DAC_CLKDIV_MASK;
1054 		snd_soc_write(codec, WM8991_CLOCKING_2, reg | div);
1055 		break;
1056 	case WM8991_ADCCLK_DIV:
1057 		reg = snd_soc_read(codec, WM8991_CLOCKING_2) &
1058 		      ~WM8991_ADC_CLKDIV_MASK;
1059 		snd_soc_write(codec, WM8991_CLOCKING_2, reg | div);
1060 		break;
1061 	case WM8991_BCLK_DIV:
1062 		reg = snd_soc_read(codec, WM8991_CLOCKING_1) &
1063 		      ~WM8991_BCLK_DIV_MASK;
1064 		snd_soc_write(codec, WM8991_CLOCKING_1, reg | div);
1065 		break;
1066 	default:
1067 		return -EINVAL;
1068 	}
1069 
1070 	return 0;
1071 }
1072 
1073 /*
1074  * Set PCM DAI bit size and sample rate.
1075  */
1076 static int wm8991_hw_params(struct snd_pcm_substream *substream,
1077 			    struct snd_pcm_hw_params *params,
1078 			    struct snd_soc_dai *dai)
1079 {
1080 	struct snd_soc_codec *codec = dai->codec;
1081 	u16 audio1 = snd_soc_read(codec, WM8991_AUDIO_INTERFACE_1);
1082 
1083 	audio1 &= ~WM8991_AIF_WL_MASK;
1084 	/* bit size */
1085 	switch (params_width(params)) {
1086 	case 16:
1087 		break;
1088 	case 20:
1089 		audio1 |= WM8991_AIF_WL_20BITS;
1090 		break;
1091 	case 24:
1092 		audio1 |= WM8991_AIF_WL_24BITS;
1093 		break;
1094 	case 32:
1095 		audio1 |= WM8991_AIF_WL_32BITS;
1096 		break;
1097 	}
1098 
1099 	snd_soc_write(codec, WM8991_AUDIO_INTERFACE_1, audio1);
1100 	return 0;
1101 }
1102 
1103 static int wm8991_mute(struct snd_soc_dai *dai, int mute)
1104 {
1105 	struct snd_soc_codec *codec = dai->codec;
1106 	u16 val;
1107 
1108 	val  = snd_soc_read(codec, WM8991_DAC_CTRL) & ~WM8991_DAC_MUTE;
1109 	if (mute)
1110 		snd_soc_write(codec, WM8991_DAC_CTRL, val | WM8991_DAC_MUTE);
1111 	else
1112 		snd_soc_write(codec, WM8991_DAC_CTRL, val);
1113 	return 0;
1114 }
1115 
1116 static int wm8991_set_bias_level(struct snd_soc_codec *codec,
1117 				 enum snd_soc_bias_level level)
1118 {
1119 	struct wm8991_priv *wm8991 = snd_soc_codec_get_drvdata(codec);
1120 	u16 val;
1121 
1122 	switch (level) {
1123 	case SND_SOC_BIAS_ON:
1124 		break;
1125 
1126 	case SND_SOC_BIAS_PREPARE:
1127 		/* VMID=2*50k */
1128 		val = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_1) &
1129 		      ~WM8991_VMID_MODE_MASK;
1130 		snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, val | 0x2);
1131 		break;
1132 
1133 	case SND_SOC_BIAS_STANDBY:
1134 		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
1135 			regcache_sync(wm8991->regmap);
1136 			/* Enable all output discharge bits */
1137 			snd_soc_write(codec, WM8991_ANTIPOP1, WM8991_DIS_LLINE |
1138 				      WM8991_DIS_RLINE | WM8991_DIS_OUT3 |
1139 				      WM8991_DIS_OUT4 | WM8991_DIS_LOUT |
1140 				      WM8991_DIS_ROUT);
1141 
1142 			/* Enable POBCTRL, SOFT_ST, VMIDTOG and BUFDCOPEN */
1143 			snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
1144 				      WM8991_BUFDCOPEN | WM8991_POBCTRL |
1145 				      WM8991_VMIDTOG);
1146 
1147 			/* Delay to allow output caps to discharge */
1148 			msleep(300);
1149 
1150 			/* Disable VMIDTOG */
1151 			snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
1152 				      WM8991_BUFDCOPEN | WM8991_POBCTRL);
1153 
1154 			/* disable all output discharge bits */
1155 			snd_soc_write(codec, WM8991_ANTIPOP1, 0);
1156 
1157 			/* Enable outputs */
1158 			snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1b00);
1159 
1160 			msleep(50);
1161 
1162 			/* Enable VMID at 2x50k */
1163 			snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1f02);
1164 
1165 			msleep(100);
1166 
1167 			/* Enable VREF */
1168 			snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1f03);
1169 
1170 			msleep(600);
1171 
1172 			/* Enable BUFIOEN */
1173 			snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
1174 				      WM8991_BUFDCOPEN | WM8991_POBCTRL |
1175 				      WM8991_BUFIOEN);
1176 
1177 			/* Disable outputs */
1178 			snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x3);
1179 
1180 			/* disable POBCTRL, SOFT_ST and BUFDCOPEN */
1181 			snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_BUFIOEN);
1182 		}
1183 
1184 		/* VMID=2*250k */
1185 		val = snd_soc_read(codec, WM8991_POWER_MANAGEMENT_1) &
1186 		      ~WM8991_VMID_MODE_MASK;
1187 		snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, val | 0x4);
1188 		break;
1189 
1190 	case SND_SOC_BIAS_OFF:
1191 		/* Enable POBCTRL and SOFT_ST */
1192 		snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
1193 			      WM8991_POBCTRL | WM8991_BUFIOEN);
1194 
1195 		/* Enable POBCTRL, SOFT_ST and BUFDCOPEN */
1196 		snd_soc_write(codec, WM8991_ANTIPOP2, WM8991_SOFTST |
1197 			      WM8991_BUFDCOPEN | WM8991_POBCTRL |
1198 			      WM8991_BUFIOEN);
1199 
1200 		/* mute DAC */
1201 		val = snd_soc_read(codec, WM8991_DAC_CTRL);
1202 		snd_soc_write(codec, WM8991_DAC_CTRL, val | WM8991_DAC_MUTE);
1203 
1204 		/* Enable any disabled outputs */
1205 		snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1f03);
1206 
1207 		/* Disable VMID */
1208 		snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x1f01);
1209 
1210 		msleep(300);
1211 
1212 		/* Enable all output discharge bits */
1213 		snd_soc_write(codec, WM8991_ANTIPOP1, WM8991_DIS_LLINE |
1214 			      WM8991_DIS_RLINE | WM8991_DIS_OUT3 |
1215 			      WM8991_DIS_OUT4 | WM8991_DIS_LOUT |
1216 			      WM8991_DIS_ROUT);
1217 
1218 		/* Disable VREF */
1219 		snd_soc_write(codec, WM8991_POWER_MANAGEMENT_1, 0x0);
1220 
1221 		/* disable POBCTRL, SOFT_ST and BUFDCOPEN */
1222 		snd_soc_write(codec, WM8991_ANTIPOP2, 0x0);
1223 		regcache_mark_dirty(wm8991->regmap);
1224 		break;
1225 	}
1226 
1227 	codec->dapm.bias_level = level;
1228 	return 0;
1229 }
1230 
1231 #define WM8991_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
1232 			SNDRV_PCM_FMTBIT_S24_LE)
1233 
1234 static const struct snd_soc_dai_ops wm8991_ops = {
1235 	.hw_params = wm8991_hw_params,
1236 	.digital_mute = wm8991_mute,
1237 	.set_fmt = wm8991_set_dai_fmt,
1238 	.set_clkdiv = wm8991_set_dai_clkdiv,
1239 	.set_pll = wm8991_set_dai_pll
1240 };
1241 
1242 /*
1243  * The WM8991 supports 2 different and mutually exclusive DAI
1244  * configurations.
1245  *
1246  * 1. ADC/DAC on Primary Interface
1247  * 2. ADC on Primary Interface/DAC on secondary
1248  */
1249 static struct snd_soc_dai_driver wm8991_dai = {
1250 	/* ADC/DAC on primary */
1251 	.name = "wm8991",
1252 	.id = 1,
1253 	.playback = {
1254 		.stream_name = "Playback",
1255 		.channels_min = 1,
1256 		.channels_max = 2,
1257 		.rates = SNDRV_PCM_RATE_8000_96000,
1258 		.formats = WM8991_FORMATS
1259 	},
1260 	.capture = {
1261 		.stream_name = "Capture",
1262 		.channels_min = 1,
1263 		.channels_max = 2,
1264 		.rates = SNDRV_PCM_RATE_8000_96000,
1265 		.formats = WM8991_FORMATS
1266 	},
1267 	.ops = &wm8991_ops
1268 };
1269 
1270 static struct snd_soc_codec_driver soc_codec_dev_wm8991 = {
1271 	.set_bias_level = wm8991_set_bias_level,
1272 	.suspend_bias_off = true,
1273 
1274 	.controls = wm8991_snd_controls,
1275 	.num_controls = ARRAY_SIZE(wm8991_snd_controls),
1276 	.dapm_widgets = wm8991_dapm_widgets,
1277 	.num_dapm_widgets = ARRAY_SIZE(wm8991_dapm_widgets),
1278 	.dapm_routes = wm8991_dapm_routes,
1279 	.num_dapm_routes = ARRAY_SIZE(wm8991_dapm_routes),
1280 };
1281 
1282 static const struct regmap_config wm8991_regmap = {
1283 	.reg_bits = 8,
1284 	.val_bits = 16,
1285 
1286 	.max_register = WM8991_PLL3,
1287 	.volatile_reg = wm8991_volatile,
1288 	.reg_defaults = wm8991_reg_defaults,
1289 	.num_reg_defaults = ARRAY_SIZE(wm8991_reg_defaults),
1290 	.cache_type = REGCACHE_RBTREE,
1291 };
1292 
1293 static int wm8991_i2c_probe(struct i2c_client *i2c,
1294 			    const struct i2c_device_id *id)
1295 {
1296 	struct wm8991_priv *wm8991;
1297 	unsigned int val;
1298 	int ret;
1299 
1300 	wm8991 = devm_kzalloc(&i2c->dev, sizeof(*wm8991), GFP_KERNEL);
1301 	if (!wm8991)
1302 		return -ENOMEM;
1303 
1304 	wm8991->regmap = devm_regmap_init_i2c(i2c, &wm8991_regmap);
1305 	if (IS_ERR(wm8991->regmap))
1306 		return PTR_ERR(wm8991->regmap);
1307 
1308 	i2c_set_clientdata(i2c, wm8991);
1309 
1310 	ret = regmap_read(wm8991->regmap, WM8991_RESET, &val);
1311 	if (ret != 0) {
1312 		dev_err(&i2c->dev, "Failed to read device ID: %d\n", ret);
1313 		return ret;
1314 	}
1315 	if (val != 0x8991) {
1316 		dev_err(&i2c->dev, "Device with ID %x is not a WM8991\n", val);
1317 		return -EINVAL;
1318 	}
1319 
1320 	ret = regmap_write(wm8991->regmap, WM8991_RESET, 0);
1321 	if (ret < 0) {
1322 		dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret);
1323 		return ret;
1324 	}
1325 
1326 	regmap_update_bits(wm8991->regmap, WM8991_AUDIO_INTERFACE_4,
1327 			   WM8991_ALRCGPIO1, WM8991_ALRCGPIO1);
1328 
1329 	regmap_update_bits(wm8991->regmap, WM8991_GPIO1_GPIO2,
1330 			   WM8991_GPIO1_SEL_MASK, 1);
1331 
1332 	regmap_update_bits(wm8991->regmap, WM8991_POWER_MANAGEMENT_1,
1333 			   WM8991_VREF_ENA | WM8991_VMID_MODE_MASK,
1334 			   WM8991_VREF_ENA | WM8991_VMID_MODE_MASK);
1335 
1336 	regmap_update_bits(wm8991->regmap, WM8991_POWER_MANAGEMENT_2,
1337 			   WM8991_OPCLK_ENA, WM8991_OPCLK_ENA);
1338 
1339 	regmap_write(wm8991->regmap, WM8991_DAC_CTRL, 0);
1340 	regmap_write(wm8991->regmap, WM8991_LEFT_OUTPUT_VOLUME,
1341 		     0x50 | (1<<8));
1342 	regmap_write(wm8991->regmap, WM8991_RIGHT_OUTPUT_VOLUME,
1343 		     0x50 | (1<<8));
1344 
1345 	ret = snd_soc_register_codec(&i2c->dev,
1346 				     &soc_codec_dev_wm8991, &wm8991_dai, 1);
1347 
1348 	return ret;
1349 }
1350 
1351 static int wm8991_i2c_remove(struct i2c_client *client)
1352 {
1353 	snd_soc_unregister_codec(&client->dev);
1354 
1355 	return 0;
1356 }
1357 
1358 static const struct i2c_device_id wm8991_i2c_id[] = {
1359 	{ "wm8991", 0 },
1360 	{ }
1361 };
1362 MODULE_DEVICE_TABLE(i2c, wm8991_i2c_id);
1363 
1364 static struct i2c_driver wm8991_i2c_driver = {
1365 	.driver = {
1366 		.name = "wm8991",
1367 		.owner = THIS_MODULE,
1368 	},
1369 	.probe = wm8991_i2c_probe,
1370 	.remove = wm8991_i2c_remove,
1371 	.id_table = wm8991_i2c_id,
1372 };
1373 
1374 module_i2c_driver(wm8991_i2c_driver);
1375 
1376 MODULE_DESCRIPTION("ASoC WM8991 driver");
1377 MODULE_AUTHOR("Graeme Gregory");
1378 MODULE_LICENSE("GPL");
1379