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TOMOYO Linux Cross Reference
Linux/sound/soc/codecs/wm8960.c

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  1 /*
  2  * wm8960.c  --  WM8960 ALSA SoC Audio driver
  3  *
  4  * Copyright 2007-11 Wolfson Microelectronics, plc
  5  *
  6  * Author: Liam Girdwood
  7  *
  8  * This program is free software; you can redistribute it and/or modify
  9  * it under the terms of the GNU General Public License version 2 as
 10  * published by the Free Software Foundation.
 11  */
 12 
 13 #include <linux/module.h>
 14 #include <linux/moduleparam.h>
 15 #include <linux/init.h>
 16 #include <linux/delay.h>
 17 #include <linux/pm.h>
 18 #include <linux/i2c.h>
 19 #include <linux/slab.h>
 20 #include <sound/core.h>
 21 #include <sound/pcm.h>
 22 #include <sound/pcm_params.h>
 23 #include <sound/soc.h>
 24 #include <sound/initval.h>
 25 #include <sound/tlv.h>
 26 #include <sound/wm8960.h>
 27 
 28 #include "wm8960.h"
 29 
 30 /* R25 - Power 1 */
 31 #define WM8960_VMID_MASK 0x180
 32 #define WM8960_VREF      0x40
 33 
 34 /* R26 - Power 2 */
 35 #define WM8960_PWR2_LOUT1       0x40
 36 #define WM8960_PWR2_ROUT1       0x20
 37 #define WM8960_PWR2_OUT3        0x02
 38 
 39 /* R28 - Anti-pop 1 */
 40 #define WM8960_POBCTRL   0x80
 41 #define WM8960_BUFDCOPEN 0x10
 42 #define WM8960_BUFIOEN   0x08
 43 #define WM8960_SOFT_ST   0x04
 44 #define WM8960_HPSTBY    0x01
 45 
 46 /* R29 - Anti-pop 2 */
 47 #define WM8960_DISOP     0x40
 48 #define WM8960_DRES_MASK 0x30
 49 
 50 /*
 51  * wm8960 register cache
 52  * We can't read the WM8960 register space when we are
 53  * using 2 wire for device control, so we cache them instead.
 54  */
 55 static const struct reg_default wm8960_reg_defaults[] = {
 56         {  0x0, 0x00a7 },
 57         {  0x1, 0x00a7 },
 58         {  0x2, 0x0000 },
 59         {  0x3, 0x0000 },
 60         {  0x4, 0x0000 },
 61         {  0x5, 0x0008 },
 62         {  0x6, 0x0000 },
 63         {  0x7, 0x000a },
 64         {  0x8, 0x01c0 },
 65         {  0x9, 0x0000 },
 66         {  0xa, 0x00ff },
 67         {  0xb, 0x00ff },
 68 
 69         { 0x10, 0x0000 },
 70         { 0x11, 0x007b },
 71         { 0x12, 0x0100 },
 72         { 0x13, 0x0032 },
 73         { 0x14, 0x0000 },
 74         { 0x15, 0x00c3 },
 75         { 0x16, 0x00c3 },
 76         { 0x17, 0x01c0 },
 77         { 0x18, 0x0000 },
 78         { 0x19, 0x0000 },
 79         { 0x1a, 0x0000 },
 80         { 0x1b, 0x0000 },
 81         { 0x1c, 0x0000 },
 82         { 0x1d, 0x0000 },
 83 
 84         { 0x20, 0x0100 },
 85         { 0x21, 0x0100 },
 86         { 0x22, 0x0050 },
 87 
 88         { 0x25, 0x0050 },
 89         { 0x26, 0x0000 },
 90         { 0x27, 0x0000 },
 91         { 0x28, 0x0000 },
 92         { 0x29, 0x0000 },
 93         { 0x2a, 0x0040 },
 94         { 0x2b, 0x0000 },
 95         { 0x2c, 0x0000 },
 96         { 0x2d, 0x0050 },
 97         { 0x2e, 0x0050 },
 98         { 0x2f, 0x0000 },
 99         { 0x30, 0x0002 },
100         { 0x31, 0x0037 },
101 
102         { 0x33, 0x0080 },
103         { 0x34, 0x0008 },
104         { 0x35, 0x0031 },
105         { 0x36, 0x0026 },
106         { 0x37, 0x00e9 },
107 };
108 
109 static bool wm8960_volatile(struct device *dev, unsigned int reg)
110 {
111         switch (reg) {
112         case WM8960_RESET:
113                 return true;
114         default:
115                 return false;
116         }
117 }
118 
119 struct wm8960_priv {
120         struct regmap *regmap;
121         int (*set_bias_level)(struct snd_soc_codec *,
122                               enum snd_soc_bias_level level);
123         struct snd_soc_dapm_widget *lout1;
124         struct snd_soc_dapm_widget *rout1;
125         struct snd_soc_dapm_widget *out3;
126         bool deemph;
127         int playback_fs;
128 };
129 
130 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
131 
132 /* enumerated controls */
133 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
134         "Right Inverted", "Stereo Inversion"};
135 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
136 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
137 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
138 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
139 
140 static const struct soc_enum wm8960_enum[] = {
141         SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
142         SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
143         SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
144         SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
145         SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
146         SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
147 };
148 
149 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
150 
151 static int wm8960_set_deemph(struct snd_soc_codec *codec)
152 {
153         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
154         int val, i, best;
155 
156         /* If we're using deemphasis select the nearest available sample
157          * rate.
158          */
159         if (wm8960->deemph) {
160                 best = 1;
161                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
162                         if (abs(deemph_settings[i] - wm8960->playback_fs) <
163                             abs(deemph_settings[best] - wm8960->playback_fs))
164                                 best = i;
165                 }
166 
167                 val = best << 1;
168         } else {
169                 val = 0;
170         }
171 
172         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
173 
174         return snd_soc_update_bits(codec, WM8960_DACCTL1,
175                                    0x6, val);
176 }
177 
178 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
179                              struct snd_ctl_elem_value *ucontrol)
180 {
181         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
182         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
183 
184         ucontrol->value.integer.value[0] = wm8960->deemph;
185         return 0;
186 }
187 
188 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
189                              struct snd_ctl_elem_value *ucontrol)
190 {
191         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
192         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
193         int deemph = ucontrol->value.integer.value[0];
194 
195         if (deemph > 1)
196                 return -EINVAL;
197 
198         wm8960->deemph = deemph;
199 
200         return wm8960_set_deemph(codec);
201 }
202 
203 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
204 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
205 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
206 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
207 static const DECLARE_TLV_DB_SCALE(boost_tlv, -1200, 300, 1);
208 
209 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
210 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
211                  0, 63, 0, adc_tlv),
212 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
213         6, 1, 0),
214 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
215         7, 1, 0),
216 
217 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume",
218                WM8960_INBMIX1, 4, 7, 0, boost_tlv),
219 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume",
220                WM8960_INBMIX1, 1, 7, 0, boost_tlv),
221 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume",
222                WM8960_INBMIX2, 4, 7, 0, boost_tlv),
223 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume",
224                WM8960_INBMIX2, 1, 7, 0, boost_tlv),
225 
226 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
227                  0, 255, 0, dac_tlv),
228 
229 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
230                  0, 127, 0, out_tlv),
231 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
232         7, 1, 0),
233 
234 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
235                  0, 127, 0, out_tlv),
236 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
237         7, 1, 0),
238 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
239 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
240 
241 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
242 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
243 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
244 
245 SOC_ENUM("DAC Polarity", wm8960_enum[1]),
246 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
247                     wm8960_get_deemph, wm8960_put_deemph),
248 
249 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
250 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
251 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
252 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
253 
254 SOC_ENUM("ALC Function", wm8960_enum[4]),
255 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
256 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
257 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
258 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
259 SOC_ENUM("ALC Mode", wm8960_enum[5]),
260 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
261 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
262 
263 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
264 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
265 
266 SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC,
267         0, 255, 0, adc_tlv),
268 
269 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
270                WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
271 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
272                WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
273 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
274                WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
275 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
276                WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
277 };
278 
279 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
280 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
281 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
282 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
283 };
284 
285 static const struct snd_kcontrol_new wm8960_lin[] = {
286 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
287 };
288 
289 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
290 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
291 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
292 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
293 };
294 
295 static const struct snd_kcontrol_new wm8960_rin[] = {
296 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
297 };
298 
299 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
300 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
301 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
302 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
303 };
304 
305 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
306 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
307 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
308 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
309 };
310 
311 static const struct snd_kcontrol_new wm8960_mono_out[] = {
312 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
313 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
314 };
315 
316 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
317 SND_SOC_DAPM_INPUT("LINPUT1"),
318 SND_SOC_DAPM_INPUT("RINPUT1"),
319 SND_SOC_DAPM_INPUT("LINPUT2"),
320 SND_SOC_DAPM_INPUT("RINPUT2"),
321 SND_SOC_DAPM_INPUT("LINPUT3"),
322 SND_SOC_DAPM_INPUT("RINPUT3"),
323 
324 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
325 
326 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
327                    wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
328 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
329                    wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
330 
331 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
332                    wm8960_lin, ARRAY_SIZE(wm8960_lin)),
333 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
334                    wm8960_rin, ARRAY_SIZE(wm8960_rin)),
335 
336 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0),
337 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0),
338 
339 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
340 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
341 
342 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
343         &wm8960_loutput_mixer[0],
344         ARRAY_SIZE(wm8960_loutput_mixer)),
345 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
346         &wm8960_routput_mixer[0],
347         ARRAY_SIZE(wm8960_routput_mixer)),
348 
349 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
350 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
351 
352 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
353 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
354 
355 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
356 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
357 
358 SND_SOC_DAPM_OUTPUT("SPK_LP"),
359 SND_SOC_DAPM_OUTPUT("SPK_LN"),
360 SND_SOC_DAPM_OUTPUT("HP_L"),
361 SND_SOC_DAPM_OUTPUT("HP_R"),
362 SND_SOC_DAPM_OUTPUT("SPK_RP"),
363 SND_SOC_DAPM_OUTPUT("SPK_RN"),
364 SND_SOC_DAPM_OUTPUT("OUT3"),
365 };
366 
367 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
368 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
369         &wm8960_mono_out[0],
370         ARRAY_SIZE(wm8960_mono_out)),
371 };
372 
373 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
374 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
375 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
376 };
377 
378 static const struct snd_soc_dapm_route audio_paths[] = {
379         { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
380         { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
381         { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
382 
383         { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
384         { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
385         { "Left Input Mixer", NULL, "LINPUT2" },
386         { "Left Input Mixer", NULL, "LINPUT3" },
387 
388         { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
389         { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
390         { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
391 
392         { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
393         { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
394         { "Right Input Mixer", NULL, "RINPUT2" },
395         { "Right Input Mixer", NULL, "RINPUT3" },
396 
397         { "Left ADC", NULL, "Left Input Mixer" },
398         { "Right ADC", NULL, "Right Input Mixer" },
399 
400         { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
401         { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
402         { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
403 
404         { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
405         { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
406         { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
407 
408         { "LOUT1 PGA", NULL, "Left Output Mixer" },
409         { "ROUT1 PGA", NULL, "Right Output Mixer" },
410 
411         { "HP_L", NULL, "LOUT1 PGA" },
412         { "HP_R", NULL, "ROUT1 PGA" },
413 
414         { "Left Speaker PGA", NULL, "Left Output Mixer" },
415         { "Right Speaker PGA", NULL, "Right Output Mixer" },
416 
417         { "Left Speaker Output", NULL, "Left Speaker PGA" },
418         { "Right Speaker Output", NULL, "Right Speaker PGA" },
419 
420         { "SPK_LN", NULL, "Left Speaker Output" },
421         { "SPK_LP", NULL, "Left Speaker Output" },
422         { "SPK_RN", NULL, "Right Speaker Output" },
423         { "SPK_RP", NULL, "Right Speaker Output" },
424 };
425 
426 static const struct snd_soc_dapm_route audio_paths_out3[] = {
427         { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
428         { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
429 
430         { "OUT3", NULL, "Mono Output Mixer", }
431 };
432 
433 static const struct snd_soc_dapm_route audio_paths_capless[] = {
434         { "HP_L", NULL, "OUT3 VMID" },
435         { "HP_R", NULL, "OUT3 VMID" },
436 
437         { "OUT3 VMID", NULL, "Left Output Mixer" },
438         { "OUT3 VMID", NULL, "Right Output Mixer" },
439 };
440 
441 static int wm8960_add_widgets(struct snd_soc_codec *codec)
442 {
443         struct wm8960_data *pdata = codec->dev->platform_data;
444         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
445         struct snd_soc_dapm_context *dapm = &codec->dapm;
446         struct snd_soc_dapm_widget *w;
447 
448         snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
449                                   ARRAY_SIZE(wm8960_dapm_widgets));
450 
451         snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
452 
453         /* In capless mode OUT3 is used to provide VMID for the
454          * headphone outputs, otherwise it is used as a mono mixer.
455          */
456         if (pdata && pdata->capless) {
457                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
458                                           ARRAY_SIZE(wm8960_dapm_widgets_capless));
459 
460                 snd_soc_dapm_add_routes(dapm, audio_paths_capless,
461                                         ARRAY_SIZE(audio_paths_capless));
462         } else {
463                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
464                                           ARRAY_SIZE(wm8960_dapm_widgets_out3));
465 
466                 snd_soc_dapm_add_routes(dapm, audio_paths_out3,
467                                         ARRAY_SIZE(audio_paths_out3));
468         }
469 
470         /* We need to power up the headphone output stage out of
471          * sequence for capless mode.  To save scanning the widget
472          * list each time to find the desired power state do so now
473          * and save the result.
474          */
475         list_for_each_entry(w, &codec->card->widgets, list) {
476                 if (w->dapm != &codec->dapm)
477                         continue;
478                 if (strcmp(w->name, "LOUT1 PGA") == 0)
479                         wm8960->lout1 = w;
480                 if (strcmp(w->name, "ROUT1 PGA") == 0)
481                         wm8960->rout1 = w;
482                 if (strcmp(w->name, "OUT3 VMID") == 0)
483                         wm8960->out3 = w;
484         }
485         
486         return 0;
487 }
488 
489 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
490                 unsigned int fmt)
491 {
492         struct snd_soc_codec *codec = codec_dai->codec;
493         u16 iface = 0;
494 
495         /* set master/slave audio interface */
496         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
497         case SND_SOC_DAIFMT_CBM_CFM:
498                 iface |= 0x0040;
499                 break;
500         case SND_SOC_DAIFMT_CBS_CFS:
501                 break;
502         default:
503                 return -EINVAL;
504         }
505 
506         /* interface format */
507         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
508         case SND_SOC_DAIFMT_I2S:
509                 iface |= 0x0002;
510                 break;
511         case SND_SOC_DAIFMT_RIGHT_J:
512                 break;
513         case SND_SOC_DAIFMT_LEFT_J:
514                 iface |= 0x0001;
515                 break;
516         case SND_SOC_DAIFMT_DSP_A:
517                 iface |= 0x0003;
518                 break;
519         case SND_SOC_DAIFMT_DSP_B:
520                 iface |= 0x0013;
521                 break;
522         default:
523                 return -EINVAL;
524         }
525 
526         /* clock inversion */
527         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
528         case SND_SOC_DAIFMT_NB_NF:
529                 break;
530         case SND_SOC_DAIFMT_IB_IF:
531                 iface |= 0x0090;
532                 break;
533         case SND_SOC_DAIFMT_IB_NF:
534                 iface |= 0x0080;
535                 break;
536         case SND_SOC_DAIFMT_NB_IF:
537                 iface |= 0x0010;
538                 break;
539         default:
540                 return -EINVAL;
541         }
542 
543         /* set iface */
544         snd_soc_write(codec, WM8960_IFACE1, iface);
545         return 0;
546 }
547 
548 static struct {
549         int rate;
550         unsigned int val;
551 } alc_rates[] = {
552         { 48000, 0 },
553         { 44100, 0 },
554         { 32000, 1 },
555         { 22050, 2 },
556         { 24000, 2 },
557         { 16000, 3 },
558         { 11025, 4 },
559         { 12000, 4 },
560         {  8000, 5 },
561 };
562 
563 static int wm8960_hw_params(struct snd_pcm_substream *substream,
564                             struct snd_pcm_hw_params *params,
565                             struct snd_soc_dai *dai)
566 {
567         struct snd_soc_codec *codec = dai->codec;
568         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
569         u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
570         snd_pcm_format_t format = params_format(params);
571         int i;
572 
573         /* bit size */
574         switch (format) {
575         case SNDRV_PCM_FORMAT_S16_LE:
576         case SNDRV_PCM_FORMAT_S16_BE:
577                 break;
578         case SNDRV_PCM_FORMAT_S20_3LE:
579         case SNDRV_PCM_FORMAT_S20_3BE:
580                 iface |= 0x0004;
581                 break;
582         case SNDRV_PCM_FORMAT_S24_LE:
583         case SNDRV_PCM_FORMAT_S24_BE:
584                 iface |= 0x0008;
585                 break;
586         default:
587                 dev_err(codec->dev, "unsupported format %i\n", format);
588                 return -EINVAL;
589         }
590 
591         /* Update filters for the new rate */
592         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
593                 wm8960->playback_fs = params_rate(params);
594                 wm8960_set_deemph(codec);
595         } else {
596                 for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
597                         if (alc_rates[i].rate == params_rate(params))
598                                 snd_soc_update_bits(codec,
599                                                     WM8960_ADDCTL3, 0x7,
600                                                     alc_rates[i].val);
601         }
602 
603         /* set iface */
604         snd_soc_write(codec, WM8960_IFACE1, iface);
605         return 0;
606 }
607 
608 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
609 {
610         struct snd_soc_codec *codec = dai->codec;
611 
612         if (mute)
613                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);
614         else
615                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);
616         return 0;
617 }
618 
619 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
620                                       enum snd_soc_bias_level level)
621 {
622         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
623 
624         switch (level) {
625         case SND_SOC_BIAS_ON:
626                 break;
627 
628         case SND_SOC_BIAS_PREPARE:
629                 /* Set VMID to 2x50k */
630                 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);
631                 break;
632 
633         case SND_SOC_BIAS_STANDBY:
634                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
635                         regcache_sync(wm8960->regmap);
636 
637                         /* Enable anti-pop features */
638                         snd_soc_write(codec, WM8960_APOP1,
639                                       WM8960_POBCTRL | WM8960_SOFT_ST |
640                                       WM8960_BUFDCOPEN | WM8960_BUFIOEN);
641 
642                         /* Enable & ramp VMID at 2x50k */
643                         snd_soc_update_bits(codec, WM8960_POWER1, 0x80, 0x80);
644                         msleep(100);
645 
646                         /* Enable VREF */
647                         snd_soc_update_bits(codec, WM8960_POWER1, WM8960_VREF,
648                                             WM8960_VREF);
649 
650                         /* Disable anti-pop features */
651                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
652                 }
653 
654                 /* Set VMID to 2x250k */
655                 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x100);
656                 break;
657 
658         case SND_SOC_BIAS_OFF:
659                 /* Enable anti-pop features */
660                 snd_soc_write(codec, WM8960_APOP1,
661                              WM8960_POBCTRL | WM8960_SOFT_ST |
662                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
663 
664                 /* Disable VMID and VREF, let them discharge */
665                 snd_soc_write(codec, WM8960_POWER1, 0);
666                 msleep(600);
667                 break;
668         }
669 
670         codec->dapm.bias_level = level;
671 
672         return 0;
673 }
674 
675 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
676                                          enum snd_soc_bias_level level)
677 {
678         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
679         int reg;
680 
681         switch (level) {
682         case SND_SOC_BIAS_ON:
683                 break;
684 
685         case SND_SOC_BIAS_PREPARE:
686                 switch (codec->dapm.bias_level) {
687                 case SND_SOC_BIAS_STANDBY:
688                         /* Enable anti pop mode */
689                         snd_soc_update_bits(codec, WM8960_APOP1,
690                                             WM8960_POBCTRL | WM8960_SOFT_ST |
691                                             WM8960_BUFDCOPEN,
692                                             WM8960_POBCTRL | WM8960_SOFT_ST |
693                                             WM8960_BUFDCOPEN);
694 
695                         /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
696                         reg = 0;
697                         if (wm8960->lout1 && wm8960->lout1->power)
698                                 reg |= WM8960_PWR2_LOUT1;
699                         if (wm8960->rout1 && wm8960->rout1->power)
700                                 reg |= WM8960_PWR2_ROUT1;
701                         if (wm8960->out3 && wm8960->out3->power)
702                                 reg |= WM8960_PWR2_OUT3;
703                         snd_soc_update_bits(codec, WM8960_POWER2,
704                                             WM8960_PWR2_LOUT1 |
705                                             WM8960_PWR2_ROUT1 |
706                                             WM8960_PWR2_OUT3, reg);
707 
708                         /* Enable VMID at 2*50k */
709                         snd_soc_update_bits(codec, WM8960_POWER1,
710                                             WM8960_VMID_MASK, 0x80);
711 
712                         /* Ramp */
713                         msleep(100);
714 
715                         /* Enable VREF */
716                         snd_soc_update_bits(codec, WM8960_POWER1,
717                                             WM8960_VREF, WM8960_VREF);
718 
719                         msleep(100);
720                         break;
721 
722                 case SND_SOC_BIAS_ON:
723                         /* Enable anti-pop mode */
724                         snd_soc_update_bits(codec, WM8960_APOP1,
725                                             WM8960_POBCTRL | WM8960_SOFT_ST |
726                                             WM8960_BUFDCOPEN,
727                                             WM8960_POBCTRL | WM8960_SOFT_ST |
728                                             WM8960_BUFDCOPEN);
729 
730                         /* Disable VMID and VREF */
731                         snd_soc_update_bits(codec, WM8960_POWER1,
732                                             WM8960_VREF | WM8960_VMID_MASK, 0);
733                         break;
734 
735                 case SND_SOC_BIAS_OFF:
736                         regcache_sync(wm8960->regmap);
737                         break;
738                 default:
739                         break;
740                 }
741                 break;
742 
743         case SND_SOC_BIAS_STANDBY:
744                 switch (codec->dapm.bias_level) {
745                 case SND_SOC_BIAS_PREPARE:
746                         /* Disable HP discharge */
747                         snd_soc_update_bits(codec, WM8960_APOP2,
748                                             WM8960_DISOP | WM8960_DRES_MASK,
749                                             0);
750 
751                         /* Disable anti-pop features */
752                         snd_soc_update_bits(codec, WM8960_APOP1,
753                                             WM8960_POBCTRL | WM8960_SOFT_ST |
754                                             WM8960_BUFDCOPEN,
755                                             WM8960_POBCTRL | WM8960_SOFT_ST |
756                                             WM8960_BUFDCOPEN);
757                         break;
758 
759                 default:
760                         break;
761                 }
762                 break;
763 
764         case SND_SOC_BIAS_OFF:
765                 break;
766         }
767 
768         codec->dapm.bias_level = level;
769 
770         return 0;
771 }
772 
773 /* PLL divisors */
774 struct _pll_div {
775         u32 pre_div:1;
776         u32 n:4;
777         u32 k:24;
778 };
779 
780 /* The size in bits of the pll divide multiplied by 10
781  * to allow rounding later */
782 #define FIXED_PLL_SIZE ((1 << 24) * 10)
783 
784 static int pll_factors(unsigned int source, unsigned int target,
785                        struct _pll_div *pll_div)
786 {
787         unsigned long long Kpart;
788         unsigned int K, Ndiv, Nmod;
789 
790         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
791 
792         /* Scale up target to PLL operating frequency */
793         target *= 4;
794 
795         Ndiv = target / source;
796         if (Ndiv < 6) {
797                 source >>= 1;
798                 pll_div->pre_div = 1;
799                 Ndiv = target / source;
800         } else
801                 pll_div->pre_div = 0;
802 
803         if ((Ndiv < 6) || (Ndiv > 12)) {
804                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
805                 return -EINVAL;
806         }
807 
808         pll_div->n = Ndiv;
809         Nmod = target % source;
810         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
811 
812         do_div(Kpart, source);
813 
814         K = Kpart & 0xFFFFFFFF;
815 
816         /* Check if we need to round */
817         if ((K % 10) >= 5)
818                 K += 5;
819 
820         /* Move down to proper range now rounding is done */
821         K /= 10;
822 
823         pll_div->k = K;
824 
825         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
826                  pll_div->n, pll_div->k, pll_div->pre_div);
827 
828         return 0;
829 }
830 
831 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
832                 int source, unsigned int freq_in, unsigned int freq_out)
833 {
834         struct snd_soc_codec *codec = codec_dai->codec;
835         u16 reg;
836         static struct _pll_div pll_div;
837         int ret;
838 
839         if (freq_in && freq_out) {
840                 ret = pll_factors(freq_in, freq_out, &pll_div);
841                 if (ret != 0)
842                         return ret;
843         }
844 
845         /* Disable the PLL: even if we are changing the frequency the
846          * PLL needs to be disabled while we do so. */
847         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0);
848         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0);
849 
850         if (!freq_in || !freq_out)
851                 return 0;
852 
853         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
854         reg |= pll_div.pre_div << 4;
855         reg |= pll_div.n;
856 
857         if (pll_div.k) {
858                 reg |= 0x20;
859 
860                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 16) & 0xff);
861                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 8) & 0xff);
862                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0xff);
863         }
864         snd_soc_write(codec, WM8960_PLL1, reg);
865 
866         /* Turn it on */
867         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0x1);
868         msleep(250);
869         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0x1);
870 
871         return 0;
872 }
873 
874 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
875                 int div_id, int div)
876 {
877         struct snd_soc_codec *codec = codec_dai->codec;
878         u16 reg;
879 
880         switch (div_id) {
881         case WM8960_SYSCLKDIV:
882                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
883                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
884                 break;
885         case WM8960_DACDIV:
886                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
887                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
888                 break;
889         case WM8960_OPCLKDIV:
890                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
891                 snd_soc_write(codec, WM8960_PLL1, reg | div);
892                 break;
893         case WM8960_DCLKDIV:
894                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
895                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
896                 break;
897         case WM8960_TOCLKSEL:
898                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
899                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
900                 break;
901         default:
902                 return -EINVAL;
903         }
904 
905         return 0;
906 }
907 
908 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
909                                  enum snd_soc_bias_level level)
910 {
911         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
912 
913         return wm8960->set_bias_level(codec, level);
914 }
915 
916 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
917 
918 #define WM8960_FORMATS \
919         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
920         SNDRV_PCM_FMTBIT_S24_LE)
921 
922 static const struct snd_soc_dai_ops wm8960_dai_ops = {
923         .hw_params = wm8960_hw_params,
924         .digital_mute = wm8960_mute,
925         .set_fmt = wm8960_set_dai_fmt,
926         .set_clkdiv = wm8960_set_dai_clkdiv,
927         .set_pll = wm8960_set_dai_pll,
928 };
929 
930 static struct snd_soc_dai_driver wm8960_dai = {
931         .name = "wm8960-hifi",
932         .playback = {
933                 .stream_name = "Playback",
934                 .channels_min = 1,
935                 .channels_max = 2,
936                 .rates = WM8960_RATES,
937                 .formats = WM8960_FORMATS,},
938         .capture = {
939                 .stream_name = "Capture",
940                 .channels_min = 1,
941                 .channels_max = 2,
942                 .rates = WM8960_RATES,
943                 .formats = WM8960_FORMATS,},
944         .ops = &wm8960_dai_ops,
945         .symmetric_rates = 1,
946 };
947 
948 static int wm8960_suspend(struct snd_soc_codec *codec)
949 {
950         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
951 
952         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
953         return 0;
954 }
955 
956 static int wm8960_resume(struct snd_soc_codec *codec)
957 {
958         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
959 
960         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
961         return 0;
962 }
963 
964 static int wm8960_probe(struct snd_soc_codec *codec)
965 {
966         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
967         struct wm8960_data *pdata = dev_get_platdata(codec->dev);
968         int ret;
969 
970         wm8960->set_bias_level = wm8960_set_bias_level_out3;
971 
972         if (!pdata) {
973                 dev_warn(codec->dev, "No platform data supplied\n");
974         } else {
975                 if (pdata->capless)
976                         wm8960->set_bias_level = wm8960_set_bias_level_capless;
977         }
978 
979         ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
980         if (ret < 0) {
981                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
982                 return ret;
983         }
984 
985         ret = wm8960_reset(codec);
986         if (ret < 0) {
987                 dev_err(codec->dev, "Failed to issue reset\n");
988                 return ret;
989         }
990 
991         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
992 
993         /* Latch the update bits */
994         snd_soc_update_bits(codec, WM8960_LINVOL, 0x100, 0x100);
995         snd_soc_update_bits(codec, WM8960_RINVOL, 0x100, 0x100);
996         snd_soc_update_bits(codec, WM8960_LADC, 0x100, 0x100);
997         snd_soc_update_bits(codec, WM8960_RADC, 0x100, 0x100);
998         snd_soc_update_bits(codec, WM8960_LDAC, 0x100, 0x100);
999         snd_soc_update_bits(codec, WM8960_RDAC, 0x100, 0x100);
1000         snd_soc_update_bits(codec, WM8960_LOUT1, 0x100, 0x100);
1001         snd_soc_update_bits(codec, WM8960_ROUT1, 0x100, 0x100);
1002         snd_soc_update_bits(codec, WM8960_LOUT2, 0x100, 0x100);
1003         snd_soc_update_bits(codec, WM8960_ROUT2, 0x100, 0x100);
1004 
1005         snd_soc_add_codec_controls(codec, wm8960_snd_controls,
1006                                      ARRAY_SIZE(wm8960_snd_controls));
1007         wm8960_add_widgets(codec);
1008 
1009         return 0;
1010 }
1011 
1012 /* power down chip */
1013 static int wm8960_remove(struct snd_soc_codec *codec)
1014 {
1015         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
1016 
1017         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
1018         return 0;
1019 }
1020 
1021 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
1022         .probe =        wm8960_probe,
1023         .remove =       wm8960_remove,
1024         .suspend =      wm8960_suspend,
1025         .resume =       wm8960_resume,
1026         .set_bias_level = wm8960_set_bias_level,
1027 };
1028 
1029 static const struct regmap_config wm8960_regmap = {
1030         .reg_bits = 7,
1031         .val_bits = 9,
1032         .max_register = WM8960_PLL4,
1033 
1034         .reg_defaults = wm8960_reg_defaults,
1035         .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults),
1036         .cache_type = REGCACHE_RBTREE,
1037 
1038         .volatile_reg = wm8960_volatile,
1039 };
1040 
1041 static int wm8960_i2c_probe(struct i2c_client *i2c,
1042                             const struct i2c_device_id *id)
1043 {
1044         struct wm8960_data *pdata = dev_get_platdata(&i2c->dev);
1045         struct wm8960_priv *wm8960;
1046         int ret;
1047 
1048         wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv),
1049                               GFP_KERNEL);
1050         if (wm8960 == NULL)
1051                 return -ENOMEM;
1052 
1053         wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap);
1054         if (IS_ERR(wm8960->regmap))
1055                 return PTR_ERR(wm8960->regmap);
1056 
1057         if (pdata && pdata->shared_lrclk) {
1058                 ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2,
1059                                          0x4, 0x4);
1060                 if (ret != 0) {
1061                         dev_err(&i2c->dev, "Failed to enable LRCM: %d\n",
1062                                 ret);
1063                         return ret;
1064                 }
1065         }
1066 
1067         i2c_set_clientdata(i2c, wm8960);
1068 
1069         ret = snd_soc_register_codec(&i2c->dev,
1070                         &soc_codec_dev_wm8960, &wm8960_dai, 1);
1071 
1072         return ret;
1073 }
1074 
1075 static int wm8960_i2c_remove(struct i2c_client *client)
1076 {
1077         snd_soc_unregister_codec(&client->dev);
1078         return 0;
1079 }
1080 
1081 static const struct i2c_device_id wm8960_i2c_id[] = {
1082         { "wm8960", 0 },
1083         { }
1084 };
1085 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1086 
1087 static struct i2c_driver wm8960_i2c_driver = {
1088         .driver = {
1089                 .name = "wm8960",
1090                 .owner = THIS_MODULE,
1091         },
1092         .probe =    wm8960_i2c_probe,
1093         .remove =   wm8960_i2c_remove,
1094         .id_table = wm8960_i2c_id,
1095 };
1096 
1097 module_i2c_driver(wm8960_i2c_driver);
1098 
1099 MODULE_DESCRIPTION("ASoC WM8960 driver");
1100 MODULE_AUTHOR("Liam Girdwood");
1101 MODULE_LICENSE("GPL");
1102 

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