xref: /openbmc/linux/sound/soc/codecs/wm8753.c (revision b6dcefde)
1 /*
2  * wm8753.c  --  WM8753 ALSA Soc Audio driver
3  *
4  * Copyright 2003 Wolfson Microelectronics PLC.
5  * Author: Liam Girdwood <lrg@slimlogic.co.uk>
6  *
7  *  This program is free software; you can redistribute  it and/or modify it
8  *  under  the terms of  the GNU General  Public License as published by the
9  *  Free Software Foundation;  either version 2 of the  License, or (at your
10  *  option) any later version.
11  *
12  * Notes:
13  *  The WM8753 is a low power, high quality stereo codec with integrated PCM
14  *  codec designed for portable digital telephony applications.
15  *
16  * Dual DAI:-
17  *
18  * This driver support 2 DAI PCM's. This makes the default PCM available for
19  * HiFi audio (e.g. MP3, ogg) playback/capture and the other PCM available for
20  * voice.
21  *
22  * Please note that the voice PCM can be connected directly to a Bluetooth
23  * codec or GSM modem and thus cannot be read or written to, although it is
24  * available to be configured with snd_hw_params(), etc and kcontrols in the
25  * normal alsa manner.
26  *
27  * Fast DAI switching:-
28  *
29  * The driver can now fast switch between the DAI configurations via a
30  * an alsa kcontrol. This allows the PCM to remain open.
31  *
32  */
33 
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/kernel.h>
37 #include <linux/init.h>
38 #include <linux/delay.h>
39 #include <linux/pm.h>
40 #include <linux/i2c.h>
41 #include <linux/platform_device.h>
42 #include <linux/spi/spi.h>
43 #include <sound/core.h>
44 #include <sound/pcm.h>
45 #include <sound/pcm_params.h>
46 #include <sound/soc.h>
47 #include <sound/soc-dapm.h>
48 #include <sound/initval.h>
49 #include <sound/tlv.h>
50 #include <asm/div64.h>
51 
52 #include "wm8753.h"
53 
54 static int caps_charge = 2000;
55 module_param(caps_charge, int, 0);
56 MODULE_PARM_DESC(caps_charge, "WM8753 cap charge time (msecs)");
57 
58 static void wm8753_set_dai_mode(struct snd_soc_codec *codec,
59 	unsigned int mode);
60 
61 /*
62  * wm8753 register cache
63  * We can't read the WM8753 register space when we
64  * are using 2 wire for device control, so we cache them instead.
65  */
66 static const u16 wm8753_reg[] = {
67 	0x0008, 0x0000, 0x000a, 0x000a,
68 	0x0033, 0x0000, 0x0007, 0x00ff,
69 	0x00ff, 0x000f, 0x000f, 0x007b,
70 	0x0000, 0x0032, 0x0000, 0x00c3,
71 	0x00c3, 0x00c0, 0x0000, 0x0000,
72 	0x0000, 0x0000, 0x0000, 0x0000,
73 	0x0000, 0x0000, 0x0000, 0x0000,
74 	0x0000, 0x0000, 0x0000, 0x0055,
75 	0x0005, 0x0050, 0x0055, 0x0050,
76 	0x0055, 0x0050, 0x0055, 0x0079,
77 	0x0079, 0x0079, 0x0079, 0x0079,
78 	0x0000, 0x0000, 0x0000, 0x0000,
79 	0x0097, 0x0097, 0x0000, 0x0004,
80 	0x0000, 0x0083, 0x0024, 0x01ba,
81 	0x0000, 0x0083, 0x0024, 0x01ba,
82 	0x0000, 0x0000, 0x0000
83 };
84 
85 /* codec private data */
86 struct wm8753_priv {
87 	unsigned int sysclk;
88 	unsigned int pcmclk;
89 	struct snd_soc_codec codec;
90 	u16 reg_cache[ARRAY_SIZE(wm8753_reg)];
91 };
92 
93 /*
94  * read wm8753 register cache
95  */
96 static inline unsigned int wm8753_read_reg_cache(struct snd_soc_codec *codec,
97 	unsigned int reg)
98 {
99 	u16 *cache = codec->reg_cache;
100 	if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
101 		return -1;
102 	return cache[reg - 1];
103 }
104 
105 /*
106  * write wm8753 register cache
107  */
108 static inline void wm8753_write_reg_cache(struct snd_soc_codec *codec,
109 	unsigned int reg, unsigned int value)
110 {
111 	u16 *cache = codec->reg_cache;
112 	if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
113 		return;
114 	cache[reg - 1] = value;
115 }
116 
117 /*
118  * write to the WM8753 register space
119  */
120 static int wm8753_write(struct snd_soc_codec *codec, unsigned int reg,
121 	unsigned int value)
122 {
123 	u8 data[2];
124 
125 	/* data is
126 	 *   D15..D9 WM8753 register offset
127 	 *   D8...D0 register data
128 	 */
129 	data[0] = (reg << 1) | ((value >> 8) & 0x0001);
130 	data[1] = value & 0x00ff;
131 
132 	wm8753_write_reg_cache(codec, reg, value);
133 	if (codec->hw_write(codec->control_data, data, 2) == 2)
134 		return 0;
135 	else
136 		return -EIO;
137 }
138 
139 #define wm8753_reset(c) wm8753_write(c, WM8753_RESET, 0)
140 
141 /*
142  * WM8753 Controls
143  */
144 static const char *wm8753_base[] = {"Linear Control", "Adaptive Boost"};
145 static const char *wm8753_base_filter[] =
146 	{"130Hz @ 48kHz", "200Hz @ 48kHz", "100Hz @ 16kHz", "400Hz @ 48kHz",
147 	"100Hz @ 8kHz", "200Hz @ 8kHz"};
148 static const char *wm8753_treble[] = {"8kHz", "4kHz"};
149 static const char *wm8753_alc_func[] = {"Off", "Right", "Left", "Stereo"};
150 static const char *wm8753_ng_type[] = {"Constant PGA Gain", "Mute ADC Output"};
151 static const char *wm8753_3d_func[] = {"Capture", "Playback"};
152 static const char *wm8753_3d_uc[] = {"2.2kHz", "1.5kHz"};
153 static const char *wm8753_3d_lc[] = {"200Hz", "500Hz"};
154 static const char *wm8753_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz"};
155 static const char *wm8753_mono_mix[] = {"Stereo", "Left", "Right", "Mono"};
156 static const char *wm8753_dac_phase[] = {"Non Inverted", "Inverted"};
157 static const char *wm8753_line_mix[] = {"Line 1 + 2", "Line 1 - 2",
158 	"Line 1", "Line 2"};
159 static const char *wm8753_mono_mux[] = {"Line Mix", "Rx Mix"};
160 static const char *wm8753_right_mux[] = {"Line 2", "Rx Mix"};
161 static const char *wm8753_left_mux[] = {"Line 1", "Rx Mix"};
162 static const char *wm8753_rxmsel[] = {"RXP - RXN", "RXP + RXN", "RXP", "RXN"};
163 static const char *wm8753_sidetone_mux[] = {"Left PGA", "Mic 1", "Mic 2",
164 	"Right PGA"};
165 static const char *wm8753_mono2_src[] = {"Inverted Mono 1", "Left", "Right",
166 	"Left + Right"};
167 static const char *wm8753_out3[] = {"VREF", "ROUT2", "Left + Right"};
168 static const char *wm8753_out4[] = {"VREF", "Capture ST", "LOUT2"};
169 static const char *wm8753_radcsel[] = {"PGA", "Line or RXP-RXN", "Sidetone"};
170 static const char *wm8753_ladcsel[] = {"PGA", "Line or RXP-RXN", "Line"};
171 static const char *wm8753_mono_adc[] = {"Stereo", "Analogue Mix Left",
172 	"Analogue Mix Right", "Digital Mono Mix"};
173 static const char *wm8753_adc_hp[] = {"3.4Hz @ 48kHz", "82Hz @ 16k",
174 	"82Hz @ 8kHz", "170Hz @ 8kHz"};
175 static const char *wm8753_adc_filter[] = {"HiFi", "Voice"};
176 static const char *wm8753_mic_sel[] = {"Mic 1", "Mic 2", "Mic 3"};
177 static const char *wm8753_dai_mode[] = {"DAI 0", "DAI 1", "DAI 2", "DAI 3"};
178 static const char *wm8753_dat_sel[] = {"Stereo", "Left ADC", "Right ADC",
179 	"Channel Swap"};
180 static const char *wm8753_rout2_phase[] = {"Non Inverted", "Inverted"};
181 
182 static const struct soc_enum wm8753_enum[] = {
183 SOC_ENUM_SINGLE(WM8753_BASS, 7, 2, wm8753_base),
184 SOC_ENUM_SINGLE(WM8753_BASS, 4, 6, wm8753_base_filter),
185 SOC_ENUM_SINGLE(WM8753_TREBLE, 6, 2, wm8753_treble),
186 SOC_ENUM_SINGLE(WM8753_ALC1, 7, 4, wm8753_alc_func),
187 SOC_ENUM_SINGLE(WM8753_NGATE, 1, 2, wm8753_ng_type),
188 SOC_ENUM_SINGLE(WM8753_3D, 7, 2, wm8753_3d_func),
189 SOC_ENUM_SINGLE(WM8753_3D, 6, 2, wm8753_3d_uc),
190 SOC_ENUM_SINGLE(WM8753_3D, 5, 2, wm8753_3d_lc),
191 SOC_ENUM_SINGLE(WM8753_DAC, 1, 4, wm8753_deemp),
192 SOC_ENUM_SINGLE(WM8753_DAC, 4, 4, wm8753_mono_mix),
193 SOC_ENUM_SINGLE(WM8753_DAC, 6, 2, wm8753_dac_phase),
194 SOC_ENUM_SINGLE(WM8753_INCTL1, 3, 4, wm8753_line_mix),
195 SOC_ENUM_SINGLE(WM8753_INCTL1, 2, 2, wm8753_mono_mux),
196 SOC_ENUM_SINGLE(WM8753_INCTL1, 1, 2, wm8753_right_mux),
197 SOC_ENUM_SINGLE(WM8753_INCTL1, 0, 2, wm8753_left_mux),
198 SOC_ENUM_SINGLE(WM8753_INCTL2, 6, 4, wm8753_rxmsel),
199 SOC_ENUM_SINGLE(WM8753_INCTL2, 4, 4, wm8753_sidetone_mux),
200 SOC_ENUM_SINGLE(WM8753_OUTCTL, 7, 4, wm8753_mono2_src),
201 SOC_ENUM_SINGLE(WM8753_OUTCTL, 0, 3, wm8753_out3),
202 SOC_ENUM_SINGLE(WM8753_ADCTL2, 7, 3, wm8753_out4),
203 SOC_ENUM_SINGLE(WM8753_ADCIN, 2, 3, wm8753_radcsel),
204 SOC_ENUM_SINGLE(WM8753_ADCIN, 0, 3, wm8753_ladcsel),
205 SOC_ENUM_SINGLE(WM8753_ADCIN, 4, 4, wm8753_mono_adc),
206 SOC_ENUM_SINGLE(WM8753_ADC, 2, 4, wm8753_adc_hp),
207 SOC_ENUM_SINGLE(WM8753_ADC, 4, 2, wm8753_adc_filter),
208 SOC_ENUM_SINGLE(WM8753_MICBIAS, 6, 3, wm8753_mic_sel),
209 SOC_ENUM_SINGLE(WM8753_IOCTL, 2, 4, wm8753_dai_mode),
210 SOC_ENUM_SINGLE(WM8753_ADC, 7, 4, wm8753_dat_sel),
211 SOC_ENUM_SINGLE(WM8753_OUTCTL, 2, 2, wm8753_rout2_phase),
212 };
213 
214 
215 static int wm8753_get_dai(struct snd_kcontrol *kcontrol,
216 	struct snd_ctl_elem_value *ucontrol)
217 {
218 	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
219 	int mode = wm8753_read_reg_cache(codec, WM8753_IOCTL);
220 
221 	ucontrol->value.integer.value[0] = (mode & 0xc) >> 2;
222 	return 0;
223 }
224 
225 static int wm8753_set_dai(struct snd_kcontrol *kcontrol,
226 	struct snd_ctl_elem_value *ucontrol)
227 {
228 	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
229 	int mode = wm8753_read_reg_cache(codec, WM8753_IOCTL);
230 
231 	if (((mode & 0xc) >> 2) == ucontrol->value.integer.value[0])
232 		return 0;
233 
234 	mode &= 0xfff3;
235 	mode |= (ucontrol->value.integer.value[0] << 2);
236 
237 	wm8753_write(codec, WM8753_IOCTL, mode);
238 	wm8753_set_dai_mode(codec, ucontrol->value.integer.value[0]);
239 	return 1;
240 }
241 
242 static const DECLARE_TLV_DB_SCALE(rec_mix_tlv, -1500, 300, 0);
243 static const DECLARE_TLV_DB_SCALE(mic_preamp_tlv, 1200, 600, 0);
244 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
245 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
246 static const unsigned int out_tlv[] = {
247 	TLV_DB_RANGE_HEAD(2),
248 	/* 0000000 - 0101111 = "Analogue mute" */
249 	0, 48, TLV_DB_SCALE_ITEM(-25500, 0, 0),
250 	48, 127, TLV_DB_SCALE_ITEM(-7300, 100, 0),
251 };
252 static const DECLARE_TLV_DB_SCALE(mix_tlv, -1500, 300, 0);
253 static const DECLARE_TLV_DB_SCALE(voice_mix_tlv, -1200, 300, 0);
254 static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0);
255 
256 static const struct snd_kcontrol_new wm8753_snd_controls[] = {
257 SOC_DOUBLE_R_TLV("PCM Volume", WM8753_LDAC, WM8753_RDAC, 0, 255, 0, dac_tlv),
258 
259 SOC_DOUBLE_R_TLV("ADC Capture Volume", WM8753_LADC, WM8753_RADC, 0, 255, 0,
260 		 adc_tlv),
261 
262 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8753_LOUT1V, WM8753_ROUT1V,
263 		 0, 127, 0, out_tlv),
264 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8753_LOUT2V, WM8753_ROUT2V, 0,
265 		 127, 0, out_tlv),
266 
267 SOC_SINGLE_TLV("Mono Playback Volume", WM8753_MOUTV, 0, 127, 0, out_tlv),
268 
269 SOC_DOUBLE_R_TLV("Bypass Playback Volume", WM8753_LOUTM1, WM8753_ROUTM1, 4, 7,
270 		 1, mix_tlv),
271 SOC_DOUBLE_R_TLV("Sidetone Playback Volume", WM8753_LOUTM2, WM8753_ROUTM2, 4,
272 		 7, 1, mix_tlv),
273 SOC_DOUBLE_R_TLV("Voice Playback Volume", WM8753_LOUTM2, WM8753_ROUTM2, 0, 7,
274 		 1, voice_mix_tlv),
275 
276 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8753_LOUT1V, WM8753_ROUT1V, 7,
277 	     1, 0),
278 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8753_LOUT2V, WM8753_ROUT2V, 7,
279 	     1, 0),
280 
281 SOC_SINGLE_TLV("Mono Bypass Playback Volume", WM8753_MOUTM1, 4, 7, 1, mix_tlv),
282 SOC_SINGLE_TLV("Mono Sidetone Playback Volume", WM8753_MOUTM2, 4, 7, 1,
283 	       mix_tlv),
284 SOC_SINGLE_TLV("Mono Voice Playback Volume", WM8753_MOUTM2, 0, 7, 1,
285 	       voice_mix_tlv),
286 SOC_SINGLE("Mono Playback ZC Switch", WM8753_MOUTV, 7, 1, 0),
287 
288 SOC_ENUM("Bass Boost", wm8753_enum[0]),
289 SOC_ENUM("Bass Filter", wm8753_enum[1]),
290 SOC_SINGLE("Bass Volume", WM8753_BASS, 0, 15, 1),
291 
292 SOC_SINGLE("Treble Volume", WM8753_TREBLE, 0, 15, 1),
293 SOC_ENUM("Treble Cut-off", wm8753_enum[2]),
294 
295 SOC_DOUBLE_TLV("Sidetone Capture Volume", WM8753_RECMIX1, 0, 4, 7, 1,
296 	       rec_mix_tlv),
297 SOC_SINGLE_TLV("Voice Sidetone Capture Volume", WM8753_RECMIX2, 0, 7, 1,
298 	       rec_mix_tlv),
299 
300 SOC_DOUBLE_R_TLV("Capture Volume", WM8753_LINVOL, WM8753_RINVOL, 0, 63, 0,
301 		 pga_tlv),
302 SOC_DOUBLE_R("Capture ZC Switch", WM8753_LINVOL, WM8753_RINVOL, 6, 1, 0),
303 SOC_DOUBLE_R("Capture Switch", WM8753_LINVOL, WM8753_RINVOL, 7, 1, 1),
304 
305 SOC_ENUM("Capture Filter Select", wm8753_enum[23]),
306 SOC_ENUM("Capture Filter Cut-off", wm8753_enum[24]),
307 SOC_SINGLE("Capture Filter Switch", WM8753_ADC, 0, 1, 1),
308 
309 SOC_SINGLE("ALC Capture Target Volume", WM8753_ALC1, 0, 7, 0),
310 SOC_SINGLE("ALC Capture Max Volume", WM8753_ALC1, 4, 7, 0),
311 SOC_ENUM("ALC Capture Function", wm8753_enum[3]),
312 SOC_SINGLE("ALC Capture ZC Switch", WM8753_ALC2, 8, 1, 0),
313 SOC_SINGLE("ALC Capture Hold Time", WM8753_ALC2, 0, 15, 1),
314 SOC_SINGLE("ALC Capture Decay Time", WM8753_ALC3, 4, 15, 1),
315 SOC_SINGLE("ALC Capture Attack Time", WM8753_ALC3, 0, 15, 0),
316 SOC_SINGLE("ALC Capture NG Threshold", WM8753_NGATE, 3, 31, 0),
317 SOC_ENUM("ALC Capture NG Type", wm8753_enum[4]),
318 SOC_SINGLE("ALC Capture NG Switch", WM8753_NGATE, 0, 1, 0),
319 
320 SOC_ENUM("3D Function", wm8753_enum[5]),
321 SOC_ENUM("3D Upper Cut-off", wm8753_enum[6]),
322 SOC_ENUM("3D Lower Cut-off", wm8753_enum[7]),
323 SOC_SINGLE("3D Volume", WM8753_3D, 1, 15, 0),
324 SOC_SINGLE("3D Switch", WM8753_3D, 0, 1, 0),
325 
326 SOC_SINGLE("Capture 6dB Attenuate", WM8753_ADCTL1, 2, 1, 0),
327 SOC_SINGLE("Playback 6dB Attenuate", WM8753_ADCTL1, 1, 1, 0),
328 
329 SOC_ENUM("De-emphasis", wm8753_enum[8]),
330 SOC_ENUM("Playback Mono Mix", wm8753_enum[9]),
331 SOC_ENUM("Playback Phase", wm8753_enum[10]),
332 
333 SOC_SINGLE_TLV("Mic2 Capture Volume", WM8753_INCTL1, 7, 3, 0, mic_preamp_tlv),
334 SOC_SINGLE_TLV("Mic1 Capture Volume", WM8753_INCTL1, 5, 3, 0, mic_preamp_tlv),
335 
336 SOC_ENUM_EXT("DAI Mode", wm8753_enum[26], wm8753_get_dai, wm8753_set_dai),
337 
338 SOC_ENUM("ADC Data Select", wm8753_enum[27]),
339 SOC_ENUM("ROUT2 Phase", wm8753_enum[28]),
340 };
341 
342 /*
343  * _DAPM_ Controls
344  */
345 
346 /* Left Mixer */
347 static const struct snd_kcontrol_new wm8753_left_mixer_controls[] = {
348 SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_LOUTM2, 8, 1, 0),
349 SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_LOUTM2, 7, 1, 0),
350 SOC_DAPM_SINGLE("Left Playback Switch", WM8753_LOUTM1, 8, 1, 0),
351 SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_LOUTM1, 7, 1, 0),
352 };
353 
354 /* Right mixer */
355 static const struct snd_kcontrol_new wm8753_right_mixer_controls[] = {
356 SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_ROUTM2, 8, 1, 0),
357 SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_ROUTM2, 7, 1, 0),
358 SOC_DAPM_SINGLE("Right Playback Switch", WM8753_ROUTM1, 8, 1, 0),
359 SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_ROUTM1, 7, 1, 0),
360 };
361 
362 /* Mono mixer */
363 static const struct snd_kcontrol_new wm8753_mono_mixer_controls[] = {
364 SOC_DAPM_SINGLE("Left Playback Switch", WM8753_MOUTM1, 8, 1, 0),
365 SOC_DAPM_SINGLE("Right Playback Switch", WM8753_MOUTM2, 8, 1, 0),
366 SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_MOUTM2, 3, 1, 0),
367 SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_MOUTM2, 7, 1, 0),
368 SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_MOUTM1, 7, 1, 0),
369 };
370 
371 /* Mono 2 Mux */
372 static const struct snd_kcontrol_new wm8753_mono2_controls =
373 SOC_DAPM_ENUM("Route", wm8753_enum[17]);
374 
375 /* Out 3 Mux */
376 static const struct snd_kcontrol_new wm8753_out3_controls =
377 SOC_DAPM_ENUM("Route", wm8753_enum[18]);
378 
379 /* Out 4 Mux */
380 static const struct snd_kcontrol_new wm8753_out4_controls =
381 SOC_DAPM_ENUM("Route", wm8753_enum[19]);
382 
383 /* ADC Mono Mix */
384 static const struct snd_kcontrol_new wm8753_adc_mono_controls =
385 SOC_DAPM_ENUM("Route", wm8753_enum[22]);
386 
387 /* Record mixer */
388 static const struct snd_kcontrol_new wm8753_record_mixer_controls[] = {
389 SOC_DAPM_SINGLE("Voice Capture Switch", WM8753_RECMIX2, 3, 1, 0),
390 SOC_DAPM_SINGLE("Left Capture Switch", WM8753_RECMIX1, 3, 1, 0),
391 SOC_DAPM_SINGLE("Right Capture Switch", WM8753_RECMIX1, 7, 1, 0),
392 };
393 
394 /* Left ADC mux */
395 static const struct snd_kcontrol_new wm8753_adc_left_controls =
396 SOC_DAPM_ENUM("Route", wm8753_enum[21]);
397 
398 /* Right ADC mux */
399 static const struct snd_kcontrol_new wm8753_adc_right_controls =
400 SOC_DAPM_ENUM("Route", wm8753_enum[20]);
401 
402 /* MIC mux */
403 static const struct snd_kcontrol_new wm8753_mic_mux_controls =
404 SOC_DAPM_ENUM("Route", wm8753_enum[16]);
405 
406 /* ALC mixer */
407 static const struct snd_kcontrol_new wm8753_alc_mixer_controls[] = {
408 SOC_DAPM_SINGLE("Line Capture Switch", WM8753_INCTL2, 3, 1, 0),
409 SOC_DAPM_SINGLE("Mic2 Capture Switch", WM8753_INCTL2, 2, 1, 0),
410 SOC_DAPM_SINGLE("Mic1 Capture Switch", WM8753_INCTL2, 1, 1, 0),
411 SOC_DAPM_SINGLE("Rx Capture Switch", WM8753_INCTL2, 0, 1, 0),
412 };
413 
414 /* Left Line mux */
415 static const struct snd_kcontrol_new wm8753_line_left_controls =
416 SOC_DAPM_ENUM("Route", wm8753_enum[14]);
417 
418 /* Right Line mux */
419 static const struct snd_kcontrol_new wm8753_line_right_controls =
420 SOC_DAPM_ENUM("Route", wm8753_enum[13]);
421 
422 /* Mono Line mux */
423 static const struct snd_kcontrol_new wm8753_line_mono_controls =
424 SOC_DAPM_ENUM("Route", wm8753_enum[12]);
425 
426 /* Line mux and mixer */
427 static const struct snd_kcontrol_new wm8753_line_mux_mix_controls =
428 SOC_DAPM_ENUM("Route", wm8753_enum[11]);
429 
430 /* Rx mux and mixer */
431 static const struct snd_kcontrol_new wm8753_rx_mux_mix_controls =
432 SOC_DAPM_ENUM("Route", wm8753_enum[15]);
433 
434 /* Mic Selector Mux */
435 static const struct snd_kcontrol_new wm8753_mic_sel_mux_controls =
436 SOC_DAPM_ENUM("Route", wm8753_enum[25]);
437 
438 static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
439 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8753_PWR1, 5, 0),
440 SND_SOC_DAPM_MIXER("Left Mixer", WM8753_PWR4, 0, 0,
441 	&wm8753_left_mixer_controls[0], ARRAY_SIZE(wm8753_left_mixer_controls)),
442 SND_SOC_DAPM_PGA("Left Out 1", WM8753_PWR3, 8, 0, NULL, 0),
443 SND_SOC_DAPM_PGA("Left Out 2", WM8753_PWR3, 6, 0, NULL, 0),
444 SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", WM8753_PWR1, 3, 0),
445 SND_SOC_DAPM_OUTPUT("LOUT1"),
446 SND_SOC_DAPM_OUTPUT("LOUT2"),
447 SND_SOC_DAPM_MIXER("Right Mixer", WM8753_PWR4, 1, 0,
448 	&wm8753_right_mixer_controls[0], ARRAY_SIZE(wm8753_right_mixer_controls)),
449 SND_SOC_DAPM_PGA("Right Out 1", WM8753_PWR3, 7, 0, NULL, 0),
450 SND_SOC_DAPM_PGA("Right Out 2", WM8753_PWR3, 5, 0, NULL, 0),
451 SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", WM8753_PWR1, 2, 0),
452 SND_SOC_DAPM_OUTPUT("ROUT1"),
453 SND_SOC_DAPM_OUTPUT("ROUT2"),
454 SND_SOC_DAPM_MIXER("Mono Mixer", WM8753_PWR4, 2, 0,
455 	&wm8753_mono_mixer_controls[0], ARRAY_SIZE(wm8753_mono_mixer_controls)),
456 SND_SOC_DAPM_PGA("Mono Out 1", WM8753_PWR3, 2, 0, NULL, 0),
457 SND_SOC_DAPM_PGA("Mono Out 2", WM8753_PWR3, 1, 0, NULL, 0),
458 SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", WM8753_PWR1, 4, 0),
459 SND_SOC_DAPM_OUTPUT("MONO1"),
460 SND_SOC_DAPM_MUX("Mono 2 Mux", SND_SOC_NOPM, 0, 0, &wm8753_mono2_controls),
461 SND_SOC_DAPM_OUTPUT("MONO2"),
462 SND_SOC_DAPM_MIXER("Out3 Left + Right", -1, 0, 0, NULL, 0),
463 SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8753_out3_controls),
464 SND_SOC_DAPM_PGA("Out 3", WM8753_PWR3, 4, 0, NULL, 0),
465 SND_SOC_DAPM_OUTPUT("OUT3"),
466 SND_SOC_DAPM_MUX("Out4 Mux", SND_SOC_NOPM, 0, 0, &wm8753_out4_controls),
467 SND_SOC_DAPM_PGA("Out 4", WM8753_PWR3, 3, 0, NULL, 0),
468 SND_SOC_DAPM_OUTPUT("OUT4"),
469 SND_SOC_DAPM_MIXER("Playback Mixer", WM8753_PWR4, 3, 0,
470 	&wm8753_record_mixer_controls[0],
471 	ARRAY_SIZE(wm8753_record_mixer_controls)),
472 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8753_PWR2, 3, 0),
473 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8753_PWR2, 2, 0),
474 SND_SOC_DAPM_MUX("Capture Left Mixer", SND_SOC_NOPM, 0, 0,
475 	&wm8753_adc_mono_controls),
476 SND_SOC_DAPM_MUX("Capture Right Mixer", SND_SOC_NOPM, 0, 0,
477 	&wm8753_adc_mono_controls),
478 SND_SOC_DAPM_MUX("Capture Left Mux", SND_SOC_NOPM, 0, 0,
479 	&wm8753_adc_left_controls),
480 SND_SOC_DAPM_MUX("Capture Right Mux", SND_SOC_NOPM, 0, 0,
481 	&wm8753_adc_right_controls),
482 SND_SOC_DAPM_MUX("Mic Sidetone Mux", SND_SOC_NOPM, 0, 0,
483 	&wm8753_mic_mux_controls),
484 SND_SOC_DAPM_PGA("Left Capture Volume", WM8753_PWR2, 5, 0, NULL, 0),
485 SND_SOC_DAPM_PGA("Right Capture Volume", WM8753_PWR2, 4, 0, NULL, 0),
486 SND_SOC_DAPM_MIXER("ALC Mixer", WM8753_PWR2, 6, 0,
487 	&wm8753_alc_mixer_controls[0], ARRAY_SIZE(wm8753_alc_mixer_controls)),
488 SND_SOC_DAPM_MUX("Line Left Mux", SND_SOC_NOPM, 0, 0,
489 	&wm8753_line_left_controls),
490 SND_SOC_DAPM_MUX("Line Right Mux", SND_SOC_NOPM, 0, 0,
491 	&wm8753_line_right_controls),
492 SND_SOC_DAPM_MUX("Line Mono Mux", SND_SOC_NOPM, 0, 0,
493 	&wm8753_line_mono_controls),
494 SND_SOC_DAPM_MUX("Line Mixer", WM8753_PWR2, 0, 0,
495 	&wm8753_line_mux_mix_controls),
496 SND_SOC_DAPM_MUX("Rx Mixer", WM8753_PWR2, 1, 0,
497 	&wm8753_rx_mux_mix_controls),
498 SND_SOC_DAPM_PGA("Mic 1 Volume", WM8753_PWR2, 8, 0, NULL, 0),
499 SND_SOC_DAPM_PGA("Mic 2 Volume", WM8753_PWR2, 7, 0, NULL, 0),
500 SND_SOC_DAPM_MUX("Mic Selection Mux", SND_SOC_NOPM, 0, 0,
501 	&wm8753_mic_sel_mux_controls),
502 SND_SOC_DAPM_INPUT("LINE1"),
503 SND_SOC_DAPM_INPUT("LINE2"),
504 SND_SOC_DAPM_INPUT("RXP"),
505 SND_SOC_DAPM_INPUT("RXN"),
506 SND_SOC_DAPM_INPUT("ACIN"),
507 SND_SOC_DAPM_OUTPUT("ACOP"),
508 SND_SOC_DAPM_INPUT("MIC1N"),
509 SND_SOC_DAPM_INPUT("MIC1"),
510 SND_SOC_DAPM_INPUT("MIC2N"),
511 SND_SOC_DAPM_INPUT("MIC2"),
512 SND_SOC_DAPM_VMID("VREF"),
513 };
514 
515 static const struct snd_soc_dapm_route audio_map[] = {
516 	/* left mixer */
517 	{"Left Mixer", "Left Playback Switch", "Left DAC"},
518 	{"Left Mixer", "Voice Playback Switch", "Voice DAC"},
519 	{"Left Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
520 	{"Left Mixer", "Bypass Playback Switch", "Line Left Mux"},
521 
522 	/* right mixer */
523 	{"Right Mixer", "Right Playback Switch", "Right DAC"},
524 	{"Right Mixer", "Voice Playback Switch", "Voice DAC"},
525 	{"Right Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
526 	{"Right Mixer", "Bypass Playback Switch", "Line Right Mux"},
527 
528 	/* mono mixer */
529 	{"Mono Mixer", "Voice Playback Switch", "Voice DAC"},
530 	{"Mono Mixer", "Left Playback Switch", "Left DAC"},
531 	{"Mono Mixer", "Right Playback Switch", "Right DAC"},
532 	{"Mono Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
533 	{"Mono Mixer", "Bypass Playback Switch", "Line Mono Mux"},
534 
535 	/* left out */
536 	{"Left Out 1", NULL, "Left Mixer"},
537 	{"Left Out 2", NULL, "Left Mixer"},
538 	{"LOUT1", NULL, "Left Out 1"},
539 	{"LOUT2", NULL, "Left Out 2"},
540 
541 	/* right out */
542 	{"Right Out 1", NULL, "Right Mixer"},
543 	{"Right Out 2", NULL, "Right Mixer"},
544 	{"ROUT1", NULL, "Right Out 1"},
545 	{"ROUT2", NULL, "Right Out 2"},
546 
547 	/* mono 1 out */
548 	{"Mono Out 1", NULL, "Mono Mixer"},
549 	{"MONO1", NULL, "Mono Out 1"},
550 
551 	/* mono 2 out */
552 	{"Mono 2 Mux", "Left + Right", "Out3 Left + Right"},
553 	{"Mono 2 Mux", "Inverted Mono 1", "MONO1"},
554 	{"Mono 2 Mux", "Left", "Left Mixer"},
555 	{"Mono 2 Mux", "Right", "Right Mixer"},
556 	{"Mono Out 2", NULL, "Mono 2 Mux"},
557 	{"MONO2", NULL, "Mono Out 2"},
558 
559 	/* out 3 */
560 	{"Out3 Left + Right", NULL, "Left Mixer"},
561 	{"Out3 Left + Right", NULL, "Right Mixer"},
562 	{"Out3 Mux", "VREF", "VREF"},
563 	{"Out3 Mux", "Left + Right", "Out3 Left + Right"},
564 	{"Out3 Mux", "ROUT2", "ROUT2"},
565 	{"Out 3", NULL, "Out3 Mux"},
566 	{"OUT3", NULL, "Out 3"},
567 
568 	/* out 4 */
569 	{"Out4 Mux", "VREF", "VREF"},
570 	{"Out4 Mux", "Capture ST", "Playback Mixer"},
571 	{"Out4 Mux", "LOUT2", "LOUT2"},
572 	{"Out 4", NULL, "Out4 Mux"},
573 	{"OUT4", NULL, "Out 4"},
574 
575 	/* record mixer  */
576 	{"Playback Mixer", "Left Capture Switch", "Left Mixer"},
577 	{"Playback Mixer", "Voice Capture Switch", "Mono Mixer"},
578 	{"Playback Mixer", "Right Capture Switch", "Right Mixer"},
579 
580 	/* Mic/SideTone Mux */
581 	{"Mic Sidetone Mux", "Left PGA", "Left Capture Volume"},
582 	{"Mic Sidetone Mux", "Right PGA", "Right Capture Volume"},
583 	{"Mic Sidetone Mux", "Mic 1", "Mic 1 Volume"},
584 	{"Mic Sidetone Mux", "Mic 2", "Mic 2 Volume"},
585 
586 	/* Capture Left Mux */
587 	{"Capture Left Mux", "PGA", "Left Capture Volume"},
588 	{"Capture Left Mux", "Line or RXP-RXN", "Line Left Mux"},
589 	{"Capture Left Mux", "Line", "LINE1"},
590 
591 	/* Capture Right Mux */
592 	{"Capture Right Mux", "PGA", "Right Capture Volume"},
593 	{"Capture Right Mux", "Line or RXP-RXN", "Line Right Mux"},
594 	{"Capture Right Mux", "Sidetone", "Playback Mixer"},
595 
596 	/* Mono Capture mixer-mux */
597 	{"Capture Right Mixer", "Stereo", "Capture Right Mux"},
598 	{"Capture Left Mixer", "Stereo", "Capture Left Mux"},
599 	{"Capture Left Mixer", "Analogue Mix Left", "Capture Left Mux"},
600 	{"Capture Left Mixer", "Analogue Mix Left", "Capture Right Mux"},
601 	{"Capture Right Mixer", "Analogue Mix Right", "Capture Left Mux"},
602 	{"Capture Right Mixer", "Analogue Mix Right", "Capture Right Mux"},
603 	{"Capture Left Mixer", "Digital Mono Mix", "Capture Left Mux"},
604 	{"Capture Left Mixer", "Digital Mono Mix", "Capture Right Mux"},
605 	{"Capture Right Mixer", "Digital Mono Mix", "Capture Left Mux"},
606 	{"Capture Right Mixer", "Digital Mono Mix", "Capture Right Mux"},
607 
608 	/* ADC */
609 	{"Left ADC", NULL, "Capture Left Mixer"},
610 	{"Right ADC", NULL, "Capture Right Mixer"},
611 
612 	/* Left Capture Volume */
613 	{"Left Capture Volume", NULL, "ACIN"},
614 
615 	/* Right Capture Volume */
616 	{"Right Capture Volume", NULL, "Mic 2 Volume"},
617 
618 	/* ALC Mixer */
619 	{"ALC Mixer", "Line Capture Switch", "Line Mixer"},
620 	{"ALC Mixer", "Mic2 Capture Switch", "Mic 2 Volume"},
621 	{"ALC Mixer", "Mic1 Capture Switch", "Mic 1 Volume"},
622 	{"ALC Mixer", "Rx Capture Switch", "Rx Mixer"},
623 
624 	/* Line Left Mux */
625 	{"Line Left Mux", "Line 1", "LINE1"},
626 	{"Line Left Mux", "Rx Mix", "Rx Mixer"},
627 
628 	/* Line Right Mux */
629 	{"Line Right Mux", "Line 2", "LINE2"},
630 	{"Line Right Mux", "Rx Mix", "Rx Mixer"},
631 
632 	/* Line Mono Mux */
633 	{"Line Mono Mux", "Line Mix", "Line Mixer"},
634 	{"Line Mono Mux", "Rx Mix", "Rx Mixer"},
635 
636 	/* Line Mixer/Mux */
637 	{"Line Mixer", "Line 1 + 2", "LINE1"},
638 	{"Line Mixer", "Line 1 - 2", "LINE1"},
639 	{"Line Mixer", "Line 1 + 2", "LINE2"},
640 	{"Line Mixer", "Line 1 - 2", "LINE2"},
641 	{"Line Mixer", "Line 1", "LINE1"},
642 	{"Line Mixer", "Line 2", "LINE2"},
643 
644 	/* Rx Mixer/Mux */
645 	{"Rx Mixer", "RXP - RXN", "RXP"},
646 	{"Rx Mixer", "RXP + RXN", "RXP"},
647 	{"Rx Mixer", "RXP - RXN", "RXN"},
648 	{"Rx Mixer", "RXP + RXN", "RXN"},
649 	{"Rx Mixer", "RXP", "RXP"},
650 	{"Rx Mixer", "RXN", "RXN"},
651 
652 	/* Mic 1 Volume */
653 	{"Mic 1 Volume", NULL, "MIC1N"},
654 	{"Mic 1 Volume", NULL, "Mic Selection Mux"},
655 
656 	/* Mic 2 Volume */
657 	{"Mic 2 Volume", NULL, "MIC2N"},
658 	{"Mic 2 Volume", NULL, "MIC2"},
659 
660 	/* Mic Selector Mux */
661 	{"Mic Selection Mux", "Mic 1", "MIC1"},
662 	{"Mic Selection Mux", "Mic 2", "MIC2N"},
663 	{"Mic Selection Mux", "Mic 3", "MIC2"},
664 
665 	/* ACOP */
666 	{"ACOP", NULL, "ALC Mixer"},
667 };
668 
669 static int wm8753_add_widgets(struct snd_soc_codec *codec)
670 {
671 	snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
672 				  ARRAY_SIZE(wm8753_dapm_widgets));
673 
674 	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
675 
676 	return 0;
677 }
678 
679 /* PLL divisors */
680 struct _pll_div {
681 	u32 div2:1;
682 	u32 n:4;
683 	u32 k:24;
684 };
685 
686 /* The size in bits of the pll divide multiplied by 10
687  * to allow rounding later */
688 #define FIXED_PLL_SIZE ((1 << 22) * 10)
689 
690 static void pll_factors(struct _pll_div *pll_div, unsigned int target,
691 	unsigned int source)
692 {
693 	u64 Kpart;
694 	unsigned int K, Ndiv, Nmod;
695 
696 	Ndiv = target / source;
697 	if (Ndiv < 6) {
698 		source >>= 1;
699 		pll_div->div2 = 1;
700 		Ndiv = target / source;
701 	} else
702 		pll_div->div2 = 0;
703 
704 	if ((Ndiv < 6) || (Ndiv > 12))
705 		printk(KERN_WARNING
706 			"wm8753: unsupported N = %u\n", Ndiv);
707 
708 	pll_div->n = Ndiv;
709 	Nmod = target % source;
710 	Kpart = FIXED_PLL_SIZE * (long long)Nmod;
711 
712 	do_div(Kpart, source);
713 
714 	K = Kpart & 0xFFFFFFFF;
715 
716 	/* Check if we need to round */
717 	if ((K % 10) >= 5)
718 		K += 5;
719 
720 	/* Move down to proper range now rounding is done */
721 	K /= 10;
722 
723 	pll_div->k = K;
724 }
725 
726 static int wm8753_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
727 		int source, unsigned int freq_in, unsigned int freq_out)
728 {
729 	u16 reg, enable;
730 	int offset;
731 	struct snd_soc_codec *codec = codec_dai->codec;
732 
733 	if (pll_id < WM8753_PLL1 || pll_id > WM8753_PLL2)
734 		return -ENODEV;
735 
736 	if (pll_id == WM8753_PLL1) {
737 		offset = 0;
738 		enable = 0x10;
739 		reg = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xffef;
740 	} else {
741 		offset = 4;
742 		enable = 0x8;
743 		reg = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfff7;
744 	}
745 
746 	if (!freq_in || !freq_out) {
747 		/* disable PLL  */
748 		wm8753_write(codec, WM8753_PLL1CTL1 + offset, 0x0026);
749 		wm8753_write(codec, WM8753_CLOCK, reg);
750 		return 0;
751 	} else {
752 		u16 value = 0;
753 		struct _pll_div pll_div;
754 
755 		pll_factors(&pll_div, freq_out * 8, freq_in);
756 
757 		/* set up N and K PLL divisor ratios */
758 		/* bits 8:5 = PLL_N, bits 3:0 = PLL_K[21:18] */
759 		value = (pll_div.n << 5) + ((pll_div.k & 0x3c0000) >> 18);
760 		wm8753_write(codec, WM8753_PLL1CTL2 + offset, value);
761 
762 		/* bits 8:0 = PLL_K[17:9] */
763 		value = (pll_div.k & 0x03fe00) >> 9;
764 		wm8753_write(codec, WM8753_PLL1CTL3 + offset, value);
765 
766 		/* bits 8:0 = PLL_K[8:0] */
767 		value = pll_div.k & 0x0001ff;
768 		wm8753_write(codec, WM8753_PLL1CTL4 + offset, value);
769 
770 		/* set PLL as input and enable */
771 		wm8753_write(codec, WM8753_PLL1CTL1 + offset, 0x0027 |
772 			(pll_div.div2 << 3));
773 		wm8753_write(codec, WM8753_CLOCK, reg | enable);
774 	}
775 	return 0;
776 }
777 
778 struct _coeff_div {
779 	u32 mclk;
780 	u32 rate;
781 	u8 sr:5;
782 	u8 usb:1;
783 };
784 
785 /* codec hifi mclk (after PLL) clock divider coefficients */
786 static const struct _coeff_div coeff_div[] = {
787 	/* 8k */
788 	{12288000, 8000, 0x6, 0x0},
789 	{11289600, 8000, 0x16, 0x0},
790 	{18432000, 8000, 0x7, 0x0},
791 	{16934400, 8000, 0x17, 0x0},
792 	{12000000, 8000, 0x6, 0x1},
793 
794 	/* 11.025k */
795 	{11289600, 11025, 0x18, 0x0},
796 	{16934400, 11025, 0x19, 0x0},
797 	{12000000, 11025, 0x19, 0x1},
798 
799 	/* 16k */
800 	{12288000, 16000, 0xa, 0x0},
801 	{18432000, 16000, 0xb, 0x0},
802 	{12000000, 16000, 0xa, 0x1},
803 
804 	/* 22.05k */
805 	{11289600, 22050, 0x1a, 0x0},
806 	{16934400, 22050, 0x1b, 0x0},
807 	{12000000, 22050, 0x1b, 0x1},
808 
809 	/* 32k */
810 	{12288000, 32000, 0xc, 0x0},
811 	{18432000, 32000, 0xd, 0x0},
812 	{12000000, 32000, 0xa, 0x1},
813 
814 	/* 44.1k */
815 	{11289600, 44100, 0x10, 0x0},
816 	{16934400, 44100, 0x11, 0x0},
817 	{12000000, 44100, 0x11, 0x1},
818 
819 	/* 48k */
820 	{12288000, 48000, 0x0, 0x0},
821 	{18432000, 48000, 0x1, 0x0},
822 	{12000000, 48000, 0x0, 0x1},
823 
824 	/* 88.2k */
825 	{11289600, 88200, 0x1e, 0x0},
826 	{16934400, 88200, 0x1f, 0x0},
827 	{12000000, 88200, 0x1f, 0x1},
828 
829 	/* 96k */
830 	{12288000, 96000, 0xe, 0x0},
831 	{18432000, 96000, 0xf, 0x0},
832 	{12000000, 96000, 0xe, 0x1},
833 };
834 
835 static int get_coeff(int mclk, int rate)
836 {
837 	int i;
838 
839 	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
840 		if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
841 			return i;
842 	}
843 	return -EINVAL;
844 }
845 
846 /*
847  * Clock after PLL and dividers
848  */
849 static int wm8753_set_dai_sysclk(struct snd_soc_dai *codec_dai,
850 		int clk_id, unsigned int freq, int dir)
851 {
852 	struct snd_soc_codec *codec = codec_dai->codec;
853 	struct wm8753_priv *wm8753 = codec->private_data;
854 
855 	switch (freq) {
856 	case 11289600:
857 	case 12000000:
858 	case 12288000:
859 	case 16934400:
860 	case 18432000:
861 		if (clk_id == WM8753_MCLK) {
862 			wm8753->sysclk = freq;
863 			return 0;
864 		} else if (clk_id == WM8753_PCMCLK) {
865 			wm8753->pcmclk = freq;
866 			return 0;
867 		}
868 		break;
869 	}
870 	return -EINVAL;
871 }
872 
873 /*
874  * Set's ADC and Voice DAC format.
875  */
876 static int wm8753_vdac_adc_set_dai_fmt(struct snd_soc_dai *codec_dai,
877 		unsigned int fmt)
878 {
879 	struct snd_soc_codec *codec = codec_dai->codec;
880 	u16 voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x01ec;
881 
882 	/* interface format */
883 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
884 	case SND_SOC_DAIFMT_I2S:
885 		voice |= 0x0002;
886 		break;
887 	case SND_SOC_DAIFMT_RIGHT_J:
888 		break;
889 	case SND_SOC_DAIFMT_LEFT_J:
890 		voice |= 0x0001;
891 		break;
892 	case SND_SOC_DAIFMT_DSP_A:
893 		voice |= 0x0003;
894 		break;
895 	case SND_SOC_DAIFMT_DSP_B:
896 		voice |= 0x0013;
897 		break;
898 	default:
899 		return -EINVAL;
900 	}
901 
902 	wm8753_write(codec, WM8753_PCM, voice);
903 	return 0;
904 }
905 
906 /*
907  * Set PCM DAI bit size and sample rate.
908  */
909 static int wm8753_pcm_hw_params(struct snd_pcm_substream *substream,
910 				struct snd_pcm_hw_params *params,
911 				struct snd_soc_dai *dai)
912 {
913 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
914 	struct snd_soc_device *socdev = rtd->socdev;
915 	struct snd_soc_codec *codec = socdev->card->codec;
916 	struct wm8753_priv *wm8753 = codec->private_data;
917 	u16 voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x01f3;
918 	u16 srate = wm8753_read_reg_cache(codec, WM8753_SRATE1) & 0x017f;
919 
920 	/* bit size */
921 	switch (params_format(params)) {
922 	case SNDRV_PCM_FORMAT_S16_LE:
923 		break;
924 	case SNDRV_PCM_FORMAT_S20_3LE:
925 		voice |= 0x0004;
926 		break;
927 	case SNDRV_PCM_FORMAT_S24_LE:
928 		voice |= 0x0008;
929 		break;
930 	case SNDRV_PCM_FORMAT_S32_LE:
931 		voice |= 0x000c;
932 		break;
933 	}
934 
935 	/* sample rate */
936 	if (params_rate(params) * 384 == wm8753->pcmclk)
937 		srate |= 0x80;
938 	wm8753_write(codec, WM8753_SRATE1, srate);
939 
940 	wm8753_write(codec, WM8753_PCM, voice);
941 	return 0;
942 }
943 
944 /*
945  * Set's PCM dai fmt and BCLK.
946  */
947 static int wm8753_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,
948 		unsigned int fmt)
949 {
950 	struct snd_soc_codec *codec = codec_dai->codec;
951 	u16 voice, ioctl;
952 
953 	voice = wm8753_read_reg_cache(codec, WM8753_PCM) & 0x011f;
954 	ioctl = wm8753_read_reg_cache(codec, WM8753_IOCTL) & 0x015d;
955 
956 	/* set master/slave audio interface */
957 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
958 	case SND_SOC_DAIFMT_CBS_CFS:
959 		break;
960 	case SND_SOC_DAIFMT_CBM_CFM:
961 		ioctl |= 0x2;
962 	case SND_SOC_DAIFMT_CBM_CFS:
963 		voice |= 0x0040;
964 		break;
965 	default:
966 		return -EINVAL;
967 	}
968 
969 	/* clock inversion */
970 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
971 	case SND_SOC_DAIFMT_DSP_A:
972 	case SND_SOC_DAIFMT_DSP_B:
973 		/* frame inversion not valid for DSP modes */
974 		switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
975 		case SND_SOC_DAIFMT_NB_NF:
976 			break;
977 		case SND_SOC_DAIFMT_IB_NF:
978 			voice |= 0x0080;
979 			break;
980 		default:
981 			return -EINVAL;
982 		}
983 		break;
984 	case SND_SOC_DAIFMT_I2S:
985 	case SND_SOC_DAIFMT_RIGHT_J:
986 	case SND_SOC_DAIFMT_LEFT_J:
987 		voice &= ~0x0010;
988 		switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
989 		case SND_SOC_DAIFMT_NB_NF:
990 			break;
991 		case SND_SOC_DAIFMT_IB_IF:
992 			voice |= 0x0090;
993 			break;
994 		case SND_SOC_DAIFMT_IB_NF:
995 			voice |= 0x0080;
996 			break;
997 		case SND_SOC_DAIFMT_NB_IF:
998 			voice |= 0x0010;
999 			break;
1000 		default:
1001 			return -EINVAL;
1002 		}
1003 		break;
1004 	default:
1005 		return -EINVAL;
1006 	}
1007 
1008 	wm8753_write(codec, WM8753_PCM, voice);
1009 	wm8753_write(codec, WM8753_IOCTL, ioctl);
1010 	return 0;
1011 }
1012 
1013 static int wm8753_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
1014 		int div_id, int div)
1015 {
1016 	struct snd_soc_codec *codec = codec_dai->codec;
1017 	u16 reg;
1018 
1019 	switch (div_id) {
1020 	case WM8753_PCMDIV:
1021 		reg = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0x003f;
1022 		wm8753_write(codec, WM8753_CLOCK, reg | div);
1023 		break;
1024 	case WM8753_BCLKDIV:
1025 		reg = wm8753_read_reg_cache(codec, WM8753_SRATE2) & 0x01c7;
1026 		wm8753_write(codec, WM8753_SRATE2, reg | div);
1027 		break;
1028 	case WM8753_VXCLKDIV:
1029 		reg = wm8753_read_reg_cache(codec, WM8753_SRATE2) & 0x003f;
1030 		wm8753_write(codec, WM8753_SRATE2, reg | div);
1031 		break;
1032 	default:
1033 		return -EINVAL;
1034 	}
1035 	return 0;
1036 }
1037 
1038 /*
1039  * Set's HiFi DAC format.
1040  */
1041 static int wm8753_hdac_set_dai_fmt(struct snd_soc_dai *codec_dai,
1042 		unsigned int fmt)
1043 {
1044 	struct snd_soc_codec *codec = codec_dai->codec;
1045 	u16 hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x01e0;
1046 
1047 	/* interface format */
1048 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1049 	case SND_SOC_DAIFMT_I2S:
1050 		hifi |= 0x0002;
1051 		break;
1052 	case SND_SOC_DAIFMT_RIGHT_J:
1053 		break;
1054 	case SND_SOC_DAIFMT_LEFT_J:
1055 		hifi |= 0x0001;
1056 		break;
1057 	case SND_SOC_DAIFMT_DSP_A:
1058 		hifi |= 0x0003;
1059 		break;
1060 	case SND_SOC_DAIFMT_DSP_B:
1061 		hifi |= 0x0013;
1062 		break;
1063 	default:
1064 		return -EINVAL;
1065 	}
1066 
1067 	wm8753_write(codec, WM8753_HIFI, hifi);
1068 	return 0;
1069 }
1070 
1071 /*
1072  * Set's I2S DAI format.
1073  */
1074 static int wm8753_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai,
1075 		unsigned int fmt)
1076 {
1077 	struct snd_soc_codec *codec = codec_dai->codec;
1078 	u16 ioctl, hifi;
1079 
1080 	hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x011f;
1081 	ioctl = wm8753_read_reg_cache(codec, WM8753_IOCTL) & 0x00ae;
1082 
1083 	/* set master/slave audio interface */
1084 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1085 	case SND_SOC_DAIFMT_CBS_CFS:
1086 		break;
1087 	case SND_SOC_DAIFMT_CBM_CFM:
1088 		ioctl |= 0x1;
1089 	case SND_SOC_DAIFMT_CBM_CFS:
1090 		hifi |= 0x0040;
1091 		break;
1092 	default:
1093 		return -EINVAL;
1094 	}
1095 
1096 	/* clock inversion */
1097 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1098 	case SND_SOC_DAIFMT_DSP_A:
1099 	case SND_SOC_DAIFMT_DSP_B:
1100 		/* frame inversion not valid for DSP modes */
1101 		switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1102 		case SND_SOC_DAIFMT_NB_NF:
1103 			break;
1104 		case SND_SOC_DAIFMT_IB_NF:
1105 			hifi |= 0x0080;
1106 			break;
1107 		default:
1108 			return -EINVAL;
1109 		}
1110 		break;
1111 	case SND_SOC_DAIFMT_I2S:
1112 	case SND_SOC_DAIFMT_RIGHT_J:
1113 	case SND_SOC_DAIFMT_LEFT_J:
1114 		hifi &= ~0x0010;
1115 		switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1116 		case SND_SOC_DAIFMT_NB_NF:
1117 			break;
1118 		case SND_SOC_DAIFMT_IB_IF:
1119 			hifi |= 0x0090;
1120 			break;
1121 		case SND_SOC_DAIFMT_IB_NF:
1122 			hifi |= 0x0080;
1123 			break;
1124 		case SND_SOC_DAIFMT_NB_IF:
1125 			hifi |= 0x0010;
1126 			break;
1127 		default:
1128 			return -EINVAL;
1129 		}
1130 		break;
1131 	default:
1132 		return -EINVAL;
1133 	}
1134 
1135 	wm8753_write(codec, WM8753_HIFI, hifi);
1136 	wm8753_write(codec, WM8753_IOCTL, ioctl);
1137 	return 0;
1138 }
1139 
1140 /*
1141  * Set PCM DAI bit size and sample rate.
1142  */
1143 static int wm8753_i2s_hw_params(struct snd_pcm_substream *substream,
1144 				struct snd_pcm_hw_params *params,
1145 				struct snd_soc_dai *dai)
1146 {
1147 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
1148 	struct snd_soc_device *socdev = rtd->socdev;
1149 	struct snd_soc_codec *codec = socdev->card->codec;
1150 	struct wm8753_priv *wm8753 = codec->private_data;
1151 	u16 srate = wm8753_read_reg_cache(codec, WM8753_SRATE1) & 0x01c0;
1152 	u16 hifi = wm8753_read_reg_cache(codec, WM8753_HIFI) & 0x01f3;
1153 	int coeff;
1154 
1155 	/* is digital filter coefficient valid ? */
1156 	coeff = get_coeff(wm8753->sysclk, params_rate(params));
1157 	if (coeff < 0) {
1158 		printk(KERN_ERR "wm8753 invalid MCLK or rate\n");
1159 		return coeff;
1160 	}
1161 	wm8753_write(codec, WM8753_SRATE1, srate | (coeff_div[coeff].sr << 1) |
1162 		coeff_div[coeff].usb);
1163 
1164 	/* bit size */
1165 	switch (params_format(params)) {
1166 	case SNDRV_PCM_FORMAT_S16_LE:
1167 		break;
1168 	case SNDRV_PCM_FORMAT_S20_3LE:
1169 		hifi |= 0x0004;
1170 		break;
1171 	case SNDRV_PCM_FORMAT_S24_LE:
1172 		hifi |= 0x0008;
1173 		break;
1174 	case SNDRV_PCM_FORMAT_S32_LE:
1175 		hifi |= 0x000c;
1176 		break;
1177 	}
1178 
1179 	wm8753_write(codec, WM8753_HIFI, hifi);
1180 	return 0;
1181 }
1182 
1183 static int wm8753_mode1v_set_dai_fmt(struct snd_soc_dai *codec_dai,
1184 		unsigned int fmt)
1185 {
1186 	struct snd_soc_codec *codec = codec_dai->codec;
1187 	u16 clock;
1188 
1189 	/* set clk source as pcmclk */
1190 	clock = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfffb;
1191 	wm8753_write(codec, WM8753_CLOCK, clock);
1192 
1193 	if (wm8753_vdac_adc_set_dai_fmt(codec_dai, fmt) < 0)
1194 		return -EINVAL;
1195 	return wm8753_pcm_set_dai_fmt(codec_dai, fmt);
1196 }
1197 
1198 static int wm8753_mode1h_set_dai_fmt(struct snd_soc_dai *codec_dai,
1199 		unsigned int fmt)
1200 {
1201 	if (wm8753_hdac_set_dai_fmt(codec_dai, fmt) < 0)
1202 		return -EINVAL;
1203 	return wm8753_i2s_set_dai_fmt(codec_dai, fmt);
1204 }
1205 
1206 static int wm8753_mode2_set_dai_fmt(struct snd_soc_dai *codec_dai,
1207 		unsigned int fmt)
1208 {
1209 	struct snd_soc_codec *codec = codec_dai->codec;
1210 	u16 clock;
1211 
1212 	/* set clk source as pcmclk */
1213 	clock = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfffb;
1214 	wm8753_write(codec, WM8753_CLOCK, clock);
1215 
1216 	if (wm8753_vdac_adc_set_dai_fmt(codec_dai, fmt) < 0)
1217 		return -EINVAL;
1218 	return wm8753_i2s_set_dai_fmt(codec_dai, fmt);
1219 }
1220 
1221 static int wm8753_mode3_4_set_dai_fmt(struct snd_soc_dai *codec_dai,
1222 		unsigned int fmt)
1223 {
1224 	struct snd_soc_codec *codec = codec_dai->codec;
1225 	u16 clock;
1226 
1227 	/* set clk source as mclk */
1228 	clock = wm8753_read_reg_cache(codec, WM8753_CLOCK) & 0xfffb;
1229 	wm8753_write(codec, WM8753_CLOCK, clock | 0x4);
1230 
1231 	if (wm8753_hdac_set_dai_fmt(codec_dai, fmt) < 0)
1232 		return -EINVAL;
1233 	if (wm8753_vdac_adc_set_dai_fmt(codec_dai, fmt) < 0)
1234 		return -EINVAL;
1235 	return wm8753_i2s_set_dai_fmt(codec_dai, fmt);
1236 }
1237 
1238 static int wm8753_mute(struct snd_soc_dai *dai, int mute)
1239 {
1240 	struct snd_soc_codec *codec = dai->codec;
1241 	u16 mute_reg = wm8753_read_reg_cache(codec, WM8753_DAC) & 0xfff7;
1242 
1243 	/* the digital mute covers the HiFi and Voice DAC's on the WM8753.
1244 	 * make sure we check if they are not both active when we mute */
1245 	if (mute && dai->id == 1) {
1246 		if (!wm8753_dai[WM8753_DAI_VOICE].playback.active ||
1247 			!wm8753_dai[WM8753_DAI_HIFI].playback.active)
1248 			wm8753_write(codec, WM8753_DAC, mute_reg | 0x8);
1249 	} else {
1250 		if (mute)
1251 			wm8753_write(codec, WM8753_DAC, mute_reg | 0x8);
1252 		else
1253 			wm8753_write(codec, WM8753_DAC, mute_reg);
1254 	}
1255 
1256 	return 0;
1257 }
1258 
1259 static int wm8753_set_bias_level(struct snd_soc_codec *codec,
1260 				 enum snd_soc_bias_level level)
1261 {
1262 	u16 pwr_reg = wm8753_read_reg_cache(codec, WM8753_PWR1) & 0xfe3e;
1263 
1264 	switch (level) {
1265 	case SND_SOC_BIAS_ON:
1266 		/* set vmid to 50k and unmute dac */
1267 		wm8753_write(codec, WM8753_PWR1, pwr_reg | 0x00c0);
1268 		break;
1269 	case SND_SOC_BIAS_PREPARE:
1270 		/* set vmid to 5k for quick power up */
1271 		wm8753_write(codec, WM8753_PWR1, pwr_reg | 0x01c1);
1272 		break;
1273 	case SND_SOC_BIAS_STANDBY:
1274 		/* mute dac and set vmid to 500k, enable VREF */
1275 		wm8753_write(codec, WM8753_PWR1, pwr_reg | 0x0141);
1276 		break;
1277 	case SND_SOC_BIAS_OFF:
1278 		wm8753_write(codec, WM8753_PWR1, 0x0001);
1279 		break;
1280 	}
1281 	codec->bias_level = level;
1282 	return 0;
1283 }
1284 
1285 #define WM8753_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
1286 		SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
1287 		SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
1288 		SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
1289 
1290 #define WM8753_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
1291 	SNDRV_PCM_FMTBIT_S24_LE)
1292 
1293 /*
1294  * The WM8753 supports upto 4 different and mutually exclusive DAI
1295  * configurations. This gives 2 PCM's available for use, hifi and voice.
1296  * NOTE: The Voice PCM cannot play or capture audio to the CPU as it's DAI
1297  * is connected between the wm8753 and a BT codec or GSM modem.
1298  *
1299  * 1. Voice over PCM DAI - HIFI DAC over HIFI DAI
1300  * 2. Voice over HIFI DAI - HIFI disabled
1301  * 3. Voice disabled - HIFI over HIFI
1302  * 4. Voice disabled - HIFI over HIFI, uses voice DAI LRC for capture
1303  */
1304 static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode1 = {
1305 	.hw_params	= wm8753_i2s_hw_params,
1306 	.digital_mute	= wm8753_mute,
1307 	.set_fmt	= wm8753_mode1h_set_dai_fmt,
1308 	.set_clkdiv	= wm8753_set_dai_clkdiv,
1309 	.set_pll	= wm8753_set_dai_pll,
1310 	.set_sysclk	= wm8753_set_dai_sysclk,
1311 };
1312 
1313 static struct snd_soc_dai_ops wm8753_dai_ops_voice_mode1 = {
1314 	.hw_params	= wm8753_pcm_hw_params,
1315 	.digital_mute	= wm8753_mute,
1316 	.set_fmt	= wm8753_mode1v_set_dai_fmt,
1317 	.set_clkdiv	= wm8753_set_dai_clkdiv,
1318 	.set_pll	= wm8753_set_dai_pll,
1319 	.set_sysclk	= wm8753_set_dai_sysclk,
1320 };
1321 
1322 static struct snd_soc_dai_ops wm8753_dai_ops_voice_mode2 = {
1323 	.hw_params	= wm8753_pcm_hw_params,
1324 	.digital_mute	= wm8753_mute,
1325 	.set_fmt	= wm8753_mode2_set_dai_fmt,
1326 	.set_clkdiv	= wm8753_set_dai_clkdiv,
1327 	.set_pll	= wm8753_set_dai_pll,
1328 	.set_sysclk	= wm8753_set_dai_sysclk,
1329 };
1330 
1331 static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode3	= {
1332 	.hw_params	= wm8753_i2s_hw_params,
1333 	.digital_mute	= wm8753_mute,
1334 	.set_fmt	= wm8753_mode3_4_set_dai_fmt,
1335 	.set_clkdiv	= wm8753_set_dai_clkdiv,
1336 	.set_pll	= wm8753_set_dai_pll,
1337 	.set_sysclk	= wm8753_set_dai_sysclk,
1338 };
1339 
1340 static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode4	= {
1341 	.hw_params	= wm8753_i2s_hw_params,
1342 	.digital_mute	= wm8753_mute,
1343 	.set_fmt	= wm8753_mode3_4_set_dai_fmt,
1344 	.set_clkdiv	= wm8753_set_dai_clkdiv,
1345 	.set_pll	= wm8753_set_dai_pll,
1346 	.set_sysclk	= wm8753_set_dai_sysclk,
1347 };
1348 
1349 static const struct snd_soc_dai wm8753_all_dai[] = {
1350 /* DAI HiFi mode 1 */
1351 {	.name = "WM8753 HiFi",
1352 	.id = 1,
1353 	.playback = {
1354 		.stream_name = "HiFi Playback",
1355 		.channels_min = 1,
1356 		.channels_max = 2,
1357 		.rates = WM8753_RATES,
1358 		.formats = WM8753_FORMATS},
1359 	.capture = { /* dummy for fast DAI switching */
1360 		.stream_name = "Capture",
1361 		.channels_min = 1,
1362 		.channels_max = 2,
1363 		.rates = WM8753_RATES,
1364 		.formats = WM8753_FORMATS},
1365 	.ops = &wm8753_dai_ops_hifi_mode1,
1366 },
1367 /* DAI Voice mode 1 */
1368 {	.name = "WM8753 Voice",
1369 	.id = 1,
1370 	.playback = {
1371 		.stream_name = "Voice Playback",
1372 		.channels_min = 1,
1373 		.channels_max = 1,
1374 		.rates = WM8753_RATES,
1375 		.formats = WM8753_FORMATS,},
1376 	.capture = {
1377 		.stream_name = "Capture",
1378 		.channels_min = 1,
1379 		.channels_max = 2,
1380 		.rates = WM8753_RATES,
1381 		.formats = WM8753_FORMATS,},
1382 	.ops = &wm8753_dai_ops_voice_mode1,
1383 },
1384 /* DAI HiFi mode 2 - dummy */
1385 {	.name = "WM8753 HiFi",
1386 	.id = 2,
1387 },
1388 /* DAI Voice mode 2 */
1389 {	.name = "WM8753 Voice",
1390 	.id = 2,
1391 	.playback = {
1392 		.stream_name = "Voice Playback",
1393 		.channels_min = 1,
1394 		.channels_max = 1,
1395 		.rates = WM8753_RATES,
1396 		.formats = WM8753_FORMATS,},
1397 	.capture = {
1398 		.stream_name = "Capture",
1399 		.channels_min = 1,
1400 		.channels_max = 2,
1401 		.rates = WM8753_RATES,
1402 		.formats = WM8753_FORMATS,},
1403 	.ops = &wm8753_dai_ops_voice_mode2,
1404 },
1405 /* DAI HiFi mode 3 */
1406 {	.name = "WM8753 HiFi",
1407 	.id = 3,
1408 	.playback = {
1409 		.stream_name = "HiFi Playback",
1410 		.channels_min = 1,
1411 		.channels_max = 2,
1412 		.rates = WM8753_RATES,
1413 		.formats = WM8753_FORMATS,},
1414 	.capture = {
1415 		.stream_name = "Capture",
1416 		.channels_min = 1,
1417 		.channels_max = 2,
1418 		.rates = WM8753_RATES,
1419 		.formats = WM8753_FORMATS,},
1420 	.ops = &wm8753_dai_ops_hifi_mode3,
1421 },
1422 /* DAI Voice mode 3 - dummy */
1423 {	.name = "WM8753 Voice",
1424 	.id = 3,
1425 },
1426 /* DAI HiFi mode 4 */
1427 {	.name = "WM8753 HiFi",
1428 	.id = 4,
1429 	.playback = {
1430 		.stream_name = "HiFi Playback",
1431 		.channels_min = 1,
1432 		.channels_max = 2,
1433 		.rates = WM8753_RATES,
1434 		.formats = WM8753_FORMATS,},
1435 	.capture = {
1436 		.stream_name = "Capture",
1437 		.channels_min = 1,
1438 		.channels_max = 2,
1439 		.rates = WM8753_RATES,
1440 		.formats = WM8753_FORMATS,},
1441 	.ops = &wm8753_dai_ops_hifi_mode4,
1442 },
1443 /* DAI Voice mode 4 - dummy */
1444 {	.name = "WM8753 Voice",
1445 	.id = 4,
1446 },
1447 };
1448 
1449 struct snd_soc_dai wm8753_dai[] = {
1450 	{
1451 		.name = "WM8753 DAI 0",
1452 	},
1453 	{
1454 		.name = "WM8753 DAI 1",
1455 	},
1456 };
1457 EXPORT_SYMBOL_GPL(wm8753_dai);
1458 
1459 static void wm8753_set_dai_mode(struct snd_soc_codec *codec, unsigned int mode)
1460 {
1461 	if (mode < 4) {
1462 		int playback_active, capture_active, codec_active, pop_wait;
1463 		void *private_data;
1464 		struct list_head list;
1465 
1466 		playback_active = wm8753_dai[0].playback.active;
1467 		capture_active = wm8753_dai[0].capture.active;
1468 		codec_active = wm8753_dai[0].active;
1469 		private_data = wm8753_dai[0].private_data;
1470 		pop_wait = wm8753_dai[0].pop_wait;
1471 		list = wm8753_dai[0].list;
1472 		wm8753_dai[0] = wm8753_all_dai[mode << 1];
1473 		wm8753_dai[0].playback.active = playback_active;
1474 		wm8753_dai[0].capture.active = capture_active;
1475 		wm8753_dai[0].active = codec_active;
1476 		wm8753_dai[0].private_data = private_data;
1477 		wm8753_dai[0].pop_wait = pop_wait;
1478 		wm8753_dai[0].list = list;
1479 
1480 		playback_active = wm8753_dai[1].playback.active;
1481 		capture_active = wm8753_dai[1].capture.active;
1482 		codec_active = wm8753_dai[1].active;
1483 		private_data = wm8753_dai[1].private_data;
1484 		pop_wait = wm8753_dai[1].pop_wait;
1485 		list = wm8753_dai[1].list;
1486 		wm8753_dai[1] = wm8753_all_dai[(mode << 1) + 1];
1487 		wm8753_dai[1].playback.active = playback_active;
1488 		wm8753_dai[1].capture.active = capture_active;
1489 		wm8753_dai[1].active = codec_active;
1490 		wm8753_dai[1].private_data = private_data;
1491 		wm8753_dai[1].pop_wait = pop_wait;
1492 		wm8753_dai[1].list = list;
1493 	}
1494 	wm8753_dai[0].codec = codec;
1495 	wm8753_dai[1].codec = codec;
1496 }
1497 
1498 static void wm8753_work(struct work_struct *work)
1499 {
1500 	struct snd_soc_codec *codec =
1501 		container_of(work, struct snd_soc_codec, delayed_work.work);
1502 	wm8753_set_bias_level(codec, codec->bias_level);
1503 }
1504 
1505 static int wm8753_suspend(struct platform_device *pdev, pm_message_t state)
1506 {
1507 	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1508 	struct snd_soc_codec *codec = socdev->card->codec;
1509 
1510 	/* we only need to suspend if we are a valid card */
1511 	if (!codec->card)
1512 		return 0;
1513 
1514 	wm8753_set_bias_level(codec, SND_SOC_BIAS_OFF);
1515 	return 0;
1516 }
1517 
1518 static int wm8753_resume(struct platform_device *pdev)
1519 {
1520 	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1521 	struct snd_soc_codec *codec = socdev->card->codec;
1522 	int i;
1523 	u8 data[2];
1524 	u16 *cache = codec->reg_cache;
1525 
1526 	/* we only need to resume if we are a valid card */
1527 	if (!codec->card)
1528 		return 0;
1529 
1530 	/* Sync reg_cache with the hardware */
1531 	for (i = 0; i < ARRAY_SIZE(wm8753_reg); i++) {
1532 		if (i + 1 == WM8753_RESET)
1533 			continue;
1534 
1535 		/* No point in writing hardware default values back */
1536 		if (cache[i] == wm8753_reg[i])
1537 			continue;
1538 
1539 		data[0] = ((i + 1) << 1) | ((cache[i] >> 8) & 0x0001);
1540 		data[1] = cache[i] & 0x00ff;
1541 		codec->hw_write(codec->control_data, data, 2);
1542 	}
1543 
1544 	wm8753_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1545 
1546 	/* charge wm8753 caps */
1547 	if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
1548 		wm8753_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
1549 		codec->bias_level = SND_SOC_BIAS_ON;
1550 		schedule_delayed_work(&codec->delayed_work,
1551 			msecs_to_jiffies(caps_charge));
1552 	}
1553 
1554 	return 0;
1555 }
1556 
1557 static struct snd_soc_codec *wm8753_codec;
1558 
1559 static int wm8753_probe(struct platform_device *pdev)
1560 {
1561 	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1562 	struct snd_soc_codec *codec;
1563 	int ret = 0;
1564 
1565 	if (!wm8753_codec) {
1566 		dev_err(&pdev->dev, "WM8753 codec not yet registered\n");
1567 		return -EINVAL;
1568 	}
1569 
1570 	socdev->card->codec = wm8753_codec;
1571 	codec = wm8753_codec;
1572 
1573 	wm8753_set_dai_mode(codec, 0);
1574 
1575 	/* register pcms */
1576 	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1577 	if (ret < 0) {
1578 		printk(KERN_ERR "wm8753: failed to create pcms\n");
1579 		goto pcm_err;
1580 	}
1581 
1582 	snd_soc_add_controls(codec, wm8753_snd_controls,
1583 			     ARRAY_SIZE(wm8753_snd_controls));
1584 	wm8753_add_widgets(codec);
1585 
1586 	return 0;
1587 
1588 pcm_err:
1589 	return ret;
1590 }
1591 
1592 /*
1593  * This function forces any delayed work to be queued and run.
1594  */
1595 static int run_delayed_work(struct delayed_work *dwork)
1596 {
1597 	int ret;
1598 
1599 	/* cancel any work waiting to be queued. */
1600 	ret = cancel_delayed_work(dwork);
1601 
1602 	/* if there was any work waiting then we run it now and
1603 	 * wait for it's completion */
1604 	if (ret) {
1605 		schedule_delayed_work(dwork, 0);
1606 		flush_scheduled_work();
1607 	}
1608 	return ret;
1609 }
1610 
1611 /* power down chip */
1612 static int wm8753_remove(struct platform_device *pdev)
1613 {
1614 	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1615 
1616 	snd_soc_free_pcms(socdev);
1617 	snd_soc_dapm_free(socdev);
1618 
1619 	return 0;
1620 }
1621 
1622 struct snd_soc_codec_device soc_codec_dev_wm8753 = {
1623 	.probe = 	wm8753_probe,
1624 	.remove = 	wm8753_remove,
1625 	.suspend = 	wm8753_suspend,
1626 	.resume =	wm8753_resume,
1627 };
1628 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8753);
1629 
1630 static int wm8753_register(struct wm8753_priv *wm8753)
1631 {
1632 	int ret, i;
1633 	struct snd_soc_codec *codec = &wm8753->codec;
1634 	u16 reg;
1635 
1636 	if (wm8753_codec) {
1637 		dev_err(codec->dev, "Multiple WM8753 devices not supported\n");
1638 		ret = -EINVAL;
1639 		goto err;
1640 	}
1641 
1642 	mutex_init(&codec->mutex);
1643 	INIT_LIST_HEAD(&codec->dapm_widgets);
1644 	INIT_LIST_HEAD(&codec->dapm_paths);
1645 
1646 	codec->name = "WM8753";
1647 	codec->owner = THIS_MODULE;
1648 	codec->read = wm8753_read_reg_cache;
1649 	codec->write = wm8753_write;
1650 	codec->bias_level = SND_SOC_BIAS_STANDBY;
1651 	codec->set_bias_level = wm8753_set_bias_level;
1652 	codec->dai = wm8753_dai;
1653 	codec->num_dai = 2;
1654 	codec->reg_cache_size = ARRAY_SIZE(wm8753->reg_cache) + 1;
1655 	codec->reg_cache = &wm8753->reg_cache;
1656 	codec->private_data = wm8753;
1657 
1658 	memcpy(codec->reg_cache, wm8753_reg, sizeof(wm8753->reg_cache));
1659 	INIT_DELAYED_WORK(&codec->delayed_work, wm8753_work);
1660 
1661 	ret = wm8753_reset(codec);
1662 	if (ret < 0) {
1663 		dev_err(codec->dev, "Failed to issue reset\n");
1664 		goto err;
1665 	}
1666 
1667 	/* charge output caps */
1668 	wm8753_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
1669 	schedule_delayed_work(&codec->delayed_work,
1670 			      msecs_to_jiffies(caps_charge));
1671 
1672 	/* set the update bits */
1673 	reg = wm8753_read_reg_cache(codec, WM8753_LDAC);
1674 	wm8753_write(codec, WM8753_LDAC, reg | 0x0100);
1675 	reg = wm8753_read_reg_cache(codec, WM8753_RDAC);
1676 	wm8753_write(codec, WM8753_RDAC, reg | 0x0100);
1677 	reg = wm8753_read_reg_cache(codec, WM8753_LADC);
1678 	wm8753_write(codec, WM8753_LADC, reg | 0x0100);
1679 	reg = wm8753_read_reg_cache(codec, WM8753_RADC);
1680 	wm8753_write(codec, WM8753_RADC, reg | 0x0100);
1681 	reg = wm8753_read_reg_cache(codec, WM8753_LOUT1V);
1682 	wm8753_write(codec, WM8753_LOUT1V, reg | 0x0100);
1683 	reg = wm8753_read_reg_cache(codec, WM8753_ROUT1V);
1684 	wm8753_write(codec, WM8753_ROUT1V, reg | 0x0100);
1685 	reg = wm8753_read_reg_cache(codec, WM8753_LOUT2V);
1686 	wm8753_write(codec, WM8753_LOUT2V, reg | 0x0100);
1687 	reg = wm8753_read_reg_cache(codec, WM8753_ROUT2V);
1688 	wm8753_write(codec, WM8753_ROUT2V, reg | 0x0100);
1689 	reg = wm8753_read_reg_cache(codec, WM8753_LINVOL);
1690 	wm8753_write(codec, WM8753_LINVOL, reg | 0x0100);
1691 	reg = wm8753_read_reg_cache(codec, WM8753_RINVOL);
1692 	wm8753_write(codec, WM8753_RINVOL, reg | 0x0100);
1693 
1694 	wm8753_codec = codec;
1695 
1696 	for (i = 0; i < ARRAY_SIZE(wm8753_dai); i++)
1697 		wm8753_dai[i].dev = codec->dev;
1698 
1699 	ret = snd_soc_register_codec(codec);
1700 	if (ret != 0) {
1701 		dev_err(codec->dev, "Failed to register codec: %d\n", ret);
1702 		goto err;
1703 	}
1704 
1705 	ret = snd_soc_register_dais(&wm8753_dai[0], ARRAY_SIZE(wm8753_dai));
1706 	if (ret != 0) {
1707 		dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
1708 		goto err_codec;
1709 	}
1710 
1711 	return 0;
1712 
1713 err_codec:
1714 	run_delayed_work(&codec->delayed_work);
1715 	snd_soc_unregister_codec(codec);
1716 err:
1717 	kfree(wm8753);
1718 	return ret;
1719 }
1720 
1721 static void wm8753_unregister(struct wm8753_priv *wm8753)
1722 {
1723 	wm8753_set_bias_level(&wm8753->codec, SND_SOC_BIAS_OFF);
1724 	run_delayed_work(&wm8753->codec.delayed_work);
1725 	snd_soc_unregister_dais(&wm8753_dai[0], ARRAY_SIZE(wm8753_dai));
1726 	snd_soc_unregister_codec(&wm8753->codec);
1727 	kfree(wm8753);
1728 	wm8753_codec = NULL;
1729 }
1730 
1731 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1732 
1733 static int wm8753_i2c_probe(struct i2c_client *i2c,
1734 			    const struct i2c_device_id *id)
1735 {
1736 	struct snd_soc_codec *codec;
1737 	struct wm8753_priv *wm8753;
1738 
1739 	wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
1740 	if (wm8753 == NULL)
1741 		return -ENOMEM;
1742 
1743         codec = &wm8753->codec;
1744         codec->hw_write = (hw_write_t)i2c_master_send;
1745         codec->control_data = i2c;
1746         i2c_set_clientdata(i2c, wm8753);
1747 
1748         codec->dev = &i2c->dev;
1749 
1750 	return wm8753_register(wm8753);
1751 }
1752 
1753 static int wm8753_i2c_remove(struct i2c_client *client)
1754 {
1755         struct wm8753_priv *wm8753 = i2c_get_clientdata(client);
1756         wm8753_unregister(wm8753);
1757         return 0;
1758 }
1759 
1760 static const struct i2c_device_id wm8753_i2c_id[] = {
1761 	{ "wm8753", 0 },
1762 	{ }
1763 };
1764 MODULE_DEVICE_TABLE(i2c, wm8753_i2c_id);
1765 
1766 static struct i2c_driver wm8753_i2c_driver = {
1767 	.driver = {
1768 		.name = "wm8753",
1769 		.owner = THIS_MODULE,
1770 	},
1771 	.probe =    wm8753_i2c_probe,
1772 	.remove =   wm8753_i2c_remove,
1773 	.id_table = wm8753_i2c_id,
1774 };
1775 #endif
1776 
1777 #if defined(CONFIG_SPI_MASTER)
1778 static int wm8753_spi_write(struct spi_device *spi, const char *data, int len)
1779 {
1780 	struct spi_transfer t;
1781 	struct spi_message m;
1782 	u8 msg[2];
1783 
1784 	if (len <= 0)
1785 		return 0;
1786 
1787 	msg[0] = data[0];
1788 	msg[1] = data[1];
1789 
1790 	spi_message_init(&m);
1791 	memset(&t, 0, (sizeof t));
1792 
1793 	t.tx_buf = &msg[0];
1794 	t.len = len;
1795 
1796 	spi_message_add_tail(&t, &m);
1797 	spi_sync(spi, &m);
1798 
1799 	return len;
1800 }
1801 
1802 static int __devinit wm8753_spi_probe(struct spi_device *spi)
1803 {
1804 	struct snd_soc_codec *codec;
1805 	struct wm8753_priv *wm8753;
1806 
1807 	wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
1808 	if (wm8753 == NULL)
1809 		return -ENOMEM;
1810 
1811 	codec = &wm8753->codec;
1812 	codec->control_data = spi;
1813 	codec->hw_write = (hw_write_t)wm8753_spi_write;
1814 	codec->dev = &spi->dev;
1815 
1816 	dev_set_drvdata(&spi->dev, wm8753);
1817 
1818 	return wm8753_register(wm8753);
1819 }
1820 
1821 static int __devexit wm8753_spi_remove(struct spi_device *spi)
1822 {
1823 	struct wm8753_priv *wm8753 = dev_get_drvdata(&spi->dev);
1824 	wm8753_unregister(wm8753);
1825 	return 0;
1826 }
1827 
1828 static struct spi_driver wm8753_spi_driver = {
1829 	.driver = {
1830 		.name	= "wm8753",
1831 		.bus	= &spi_bus_type,
1832 		.owner	= THIS_MODULE,
1833 	},
1834 	.probe		= wm8753_spi_probe,
1835 	.remove		= __devexit_p(wm8753_spi_remove),
1836 };
1837 #endif
1838 
1839 static int __init wm8753_modinit(void)
1840 {
1841 	int ret;
1842 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1843 	ret = i2c_add_driver(&wm8753_i2c_driver);
1844 	if (ret != 0)
1845 		pr_err("Failed to register WM8753 I2C driver: %d\n", ret);
1846 #endif
1847 #if defined(CONFIG_SPI_MASTER)
1848 	ret = spi_register_driver(&wm8753_spi_driver);
1849 	if (ret != 0)
1850 		pr_err("Failed to register WM8753 SPI driver: %d\n", ret);
1851 #endif
1852 	return 0;
1853 }
1854 module_init(wm8753_modinit);
1855 
1856 static void __exit wm8753_exit(void)
1857 {
1858 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1859 	i2c_del_driver(&wm8753_i2c_driver);
1860 #endif
1861 #if defined(CONFIG_SPI_MASTER)
1862 	spi_unregister_driver(&wm8753_spi_driver);
1863 #endif
1864 }
1865 module_exit(wm8753_exit);
1866 
1867 MODULE_DESCRIPTION("ASoC WM8753 driver");
1868 MODULE_AUTHOR("Liam Girdwood");
1869 MODULE_LICENSE("GPL");
1870