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TOMOYO Linux Cross Reference
Linux/sound/soc/codecs/wm8993.c

Version: ~ [ linux-5.6-rc1 ] ~ [ linux-5.5.2 ] ~ [ linux-5.4.17 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.102 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.170 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.213 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.213 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.81 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * wm8993.c -- WM8993 ALSA SoC audio driver
  3  *
  4  * Copyright 2009, 2010 Wolfson Microelectronics plc
  5  *
  6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  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/regulator/consumer.h>
 20 #include <linux/spi/spi.h>
 21 #include <linux/slab.h>
 22 #include <sound/core.h>
 23 #include <sound/pcm.h>
 24 #include <sound/pcm_params.h>
 25 #include <sound/tlv.h>
 26 #include <sound/soc.h>
 27 #include <sound/initval.h>
 28 #include <sound/wm8993.h>
 29 
 30 #include "wm8993.h"
 31 #include "wm_hubs.h"
 32 
 33 #define WM8993_NUM_SUPPLIES 6
 34 static const char *wm8993_supply_names[WM8993_NUM_SUPPLIES] = {
 35         "DCVDD",
 36         "DBVDD",
 37         "AVDD1",
 38         "AVDD2",
 39         "CPVDD",
 40         "SPKVDD",
 41 };
 42 
 43 static u16 wm8993_reg_defaults[WM8993_REGISTER_COUNT] = {
 44         0x8993,     /* R0   - Software Reset */
 45         0x0000,     /* R1   - Power Management (1) */
 46         0x6000,     /* R2   - Power Management (2) */
 47         0x0000,     /* R3   - Power Management (3) */
 48         0x4050,     /* R4   - Audio Interface (1) */
 49         0x4000,     /* R5   - Audio Interface (2) */
 50         0x01C8,     /* R6   - Clocking 1 */
 51         0x0000,     /* R7   - Clocking 2 */
 52         0x0000,     /* R8   - Audio Interface (3) */
 53         0x0040,     /* R9   - Audio Interface (4) */
 54         0x0004,     /* R10  - DAC CTRL */
 55         0x00C0,     /* R11  - Left DAC Digital Volume */
 56         0x00C0,     /* R12  - Right DAC Digital Volume */
 57         0x0000,     /* R13  - Digital Side Tone */
 58         0x0300,     /* R14  - ADC CTRL */
 59         0x00C0,     /* R15  - Left ADC Digital Volume */
 60         0x00C0,     /* R16  - Right ADC Digital Volume */
 61         0x0000,     /* R17 */
 62         0x0000,     /* R18  - GPIO CTRL 1 */
 63         0x0010,     /* R19  - GPIO1 */
 64         0x0000,     /* R20  - IRQ_DEBOUNCE */
 65         0x0000,     /* R21 */
 66         0x8000,     /* R22  - GPIOCTRL 2 */
 67         0x0800,     /* R23  - GPIO_POL */
 68         0x008B,     /* R24  - Left Line Input 1&2 Volume */
 69         0x008B,     /* R25  - Left Line Input 3&4 Volume */
 70         0x008B,     /* R26  - Right Line Input 1&2 Volume */
 71         0x008B,     /* R27  - Right Line Input 3&4 Volume */
 72         0x006D,     /* R28  - Left Output Volume */
 73         0x006D,     /* R29  - Right Output Volume */
 74         0x0066,     /* R30  - Line Outputs Volume */
 75         0x0020,     /* R31  - HPOUT2 Volume */
 76         0x0079,     /* R32  - Left OPGA Volume */
 77         0x0079,     /* R33  - Right OPGA Volume */
 78         0x0003,     /* R34  - SPKMIXL Attenuation */
 79         0x0003,     /* R35  - SPKMIXR Attenuation */
 80         0x0011,     /* R36  - SPKOUT Mixers */
 81         0x0100,     /* R37  - SPKOUT Boost */
 82         0x0079,     /* R38  - Speaker Volume Left */
 83         0x0079,     /* R39  - Speaker Volume Right */
 84         0x0000,     /* R40  - Input Mixer2 */
 85         0x0000,     /* R41  - Input Mixer3 */
 86         0x0000,     /* R42  - Input Mixer4 */
 87         0x0000,     /* R43  - Input Mixer5 */
 88         0x0000,     /* R44  - Input Mixer6 */
 89         0x0000,     /* R45  - Output Mixer1 */
 90         0x0000,     /* R46  - Output Mixer2 */
 91         0x0000,     /* R47  - Output Mixer3 */
 92         0x0000,     /* R48  - Output Mixer4 */
 93         0x0000,     /* R49  - Output Mixer5 */
 94         0x0000,     /* R50  - Output Mixer6 */
 95         0x0000,     /* R51  - HPOUT2 Mixer */
 96         0x0000,     /* R52  - Line Mixer1 */
 97         0x0000,     /* R53  - Line Mixer2 */
 98         0x0000,     /* R54  - Speaker Mixer */
 99         0x0000,     /* R55  - Additional Control */
100         0x0000,     /* R56  - AntiPOP1 */
101         0x0000,     /* R57  - AntiPOP2 */
102         0x0000,     /* R58  - MICBIAS */
103         0x0000,     /* R59 */
104         0x0000,     /* R60  - FLL Control 1 */
105         0x0000,     /* R61  - FLL Control 2 */
106         0x0000,     /* R62  - FLL Control 3 */
107         0x2EE0,     /* R63  - FLL Control 4 */
108         0x0002,     /* R64  - FLL Control 5 */
109         0x2287,     /* R65  - Clocking 3 */
110         0x025F,     /* R66  - Clocking 4 */
111         0x0000,     /* R67  - MW Slave Control */
112         0x0000,     /* R68 */
113         0x0002,     /* R69  - Bus Control 1 */
114         0x0000,     /* R70  - Write Sequencer 0 */
115         0x0000,     /* R71  - Write Sequencer 1 */
116         0x0000,     /* R72  - Write Sequencer 2 */
117         0x0000,     /* R73  - Write Sequencer 3 */
118         0x0000,     /* R74  - Write Sequencer 4 */
119         0x0000,     /* R75  - Write Sequencer 5 */
120         0x1F25,     /* R76  - Charge Pump 1 */
121         0x0000,     /* R77 */
122         0x0000,     /* R78 */
123         0x0000,     /* R79 */
124         0x0000,     /* R80 */
125         0x0000,     /* R81  - Class W 0 */
126         0x0000,     /* R82 */
127         0x0000,     /* R83 */
128         0x0000,     /* R84  - DC Servo 0 */
129         0x054A,     /* R85  - DC Servo 1 */
130         0x0000,     /* R86 */
131         0x0000,     /* R87  - DC Servo 3 */
132         0x0000,     /* R88  - DC Servo Readback 0 */
133         0x0000,     /* R89  - DC Servo Readback 1 */
134         0x0000,     /* R90  - DC Servo Readback 2 */
135         0x0000,     /* R91 */
136         0x0000,     /* R92 */
137         0x0000,     /* R93 */
138         0x0000,     /* R94 */
139         0x0000,     /* R95 */
140         0x0100,     /* R96  - Analogue HP 0 */
141         0x0000,     /* R97 */
142         0x0000,     /* R98  - EQ1 */
143         0x000C,     /* R99  - EQ2 */
144         0x000C,     /* R100 - EQ3 */
145         0x000C,     /* R101 - EQ4 */
146         0x000C,     /* R102 - EQ5 */
147         0x000C,     /* R103 - EQ6 */
148         0x0FCA,     /* R104 - EQ7 */
149         0x0400,     /* R105 - EQ8 */
150         0x00D8,     /* R106 - EQ9 */
151         0x1EB5,     /* R107 - EQ10 */
152         0xF145,     /* R108 - EQ11 */
153         0x0B75,     /* R109 - EQ12 */
154         0x01C5,     /* R110 - EQ13 */
155         0x1C58,     /* R111 - EQ14 */
156         0xF373,     /* R112 - EQ15 */
157         0x0A54,     /* R113 - EQ16 */
158         0x0558,     /* R114 - EQ17 */
159         0x168E,     /* R115 - EQ18 */
160         0xF829,     /* R116 - EQ19 */
161         0x07AD,     /* R117 - EQ20 */
162         0x1103,     /* R118 - EQ21 */
163         0x0564,     /* R119 - EQ22 */
164         0x0559,     /* R120 - EQ23 */
165         0x4000,     /* R121 - EQ24 */
166         0x0000,     /* R122 - Digital Pulls */
167         0x0F08,     /* R123 - DRC Control 1 */
168         0x0000,     /* R124 - DRC Control 2 */
169         0x0080,     /* R125 - DRC Control 3 */
170         0x0000,     /* R126 - DRC Control 4 */
171 };
172 
173 static struct {
174         int ratio;
175         int clk_sys_rate;
176 } clk_sys_rates[] = {
177         { 64,   0 },
178         { 128,  1 },
179         { 192,  2 },
180         { 256,  3 },
181         { 384,  4 },
182         { 512,  5 },
183         { 768,  6 },
184         { 1024, 7 },
185         { 1408, 8 },
186         { 1536, 9 },
187 };
188 
189 static struct {
190         int rate;
191         int sample_rate;
192 } sample_rates[] = {
193         { 8000,  0  },
194         { 11025, 1  },
195         { 12000, 1  },
196         { 16000, 2  },
197         { 22050, 3  },
198         { 24000, 3  },
199         { 32000, 4  },
200         { 44100, 5  },
201         { 48000, 5  },
202 };
203 
204 static struct {
205         int div; /* *10 due to .5s */
206         int bclk_div;
207 } bclk_divs[] = {
208         { 10,  0  },
209         { 15,  1  },
210         { 20,  2  },
211         { 30,  3  },
212         { 40,  4  },
213         { 55,  5  },
214         { 60,  6  },
215         { 80,  7  },
216         { 110, 8  },
217         { 120, 9  },
218         { 160, 10 },
219         { 220, 11 },
220         { 240, 12 },
221         { 320, 13 },
222         { 440, 14 },
223         { 480, 15 },
224 };
225 
226 struct wm8993_priv {
227         struct wm_hubs_data hubs_data;
228         struct regulator_bulk_data supplies[WM8993_NUM_SUPPLIES];
229         struct wm8993_platform_data pdata;
230         enum snd_soc_control_type control_type;
231         int master;
232         int sysclk_source;
233         int tdm_slots;
234         int tdm_width;
235         unsigned int mclk_rate;
236         unsigned int sysclk_rate;
237         unsigned int fs;
238         unsigned int bclk;
239         int class_w_users;
240         unsigned int fll_fref;
241         unsigned int fll_fout;
242         int fll_src;
243 };
244 
245 static int wm8993_volatile(struct snd_soc_codec *codec, unsigned int reg)
246 {
247         switch (reg) {
248         case WM8993_SOFTWARE_RESET:
249         case WM8993_DC_SERVO_0:
250         case WM8993_DC_SERVO_READBACK_0:
251         case WM8993_DC_SERVO_READBACK_1:
252         case WM8993_DC_SERVO_READBACK_2:
253                 return 1;
254         default:
255                 return 0;
256         }
257 }
258 
259 struct _fll_div {
260         u16 fll_fratio;
261         u16 fll_outdiv;
262         u16 fll_clk_ref_div;
263         u16 n;
264         u16 k;
265 };
266 
267 /* The size in bits of the FLL divide multiplied by 10
268  * to allow rounding later */
269 #define FIXED_FLL_SIZE ((1 << 16) * 10)
270 
271 static struct {
272         unsigned int min;
273         unsigned int max;
274         u16 fll_fratio;
275         int ratio;
276 } fll_fratios[] = {
277         {       0,    64000, 4, 16 },
278         {   64000,   128000, 3,  8 },
279         {  128000,   256000, 2,  4 },
280         {  256000,  1000000, 1,  2 },
281         { 1000000, 13500000, 0,  1 },
282 };
283 
284 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
285                        unsigned int Fout)
286 {
287         u64 Kpart;
288         unsigned int K, Ndiv, Nmod, target;
289         unsigned int div;
290         int i;
291 
292         /* Fref must be <=13.5MHz */
293         div = 1;
294         fll_div->fll_clk_ref_div = 0;
295         while ((Fref / div) > 13500000) {
296                 div *= 2;
297                 fll_div->fll_clk_ref_div++;
298 
299                 if (div > 8) {
300                         pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
301                                Fref);
302                         return -EINVAL;
303                 }
304         }
305 
306         pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
307 
308         /* Apply the division for our remaining calculations */
309         Fref /= div;
310 
311         /* Fvco should be 90-100MHz; don't check the upper bound */
312         div = 0;
313         target = Fout * 2;
314         while (target < 90000000) {
315                 div++;
316                 target *= 2;
317                 if (div > 7) {
318                         pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
319                                Fout);
320                         return -EINVAL;
321                 }
322         }
323         fll_div->fll_outdiv = div;
324 
325         pr_debug("Fvco=%dHz\n", target);
326 
327         /* Find an appropriate FLL_FRATIO and factor it out of the target */
328         for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
329                 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
330                         fll_div->fll_fratio = fll_fratios[i].fll_fratio;
331                         target /= fll_fratios[i].ratio;
332                         break;
333                 }
334         }
335         if (i == ARRAY_SIZE(fll_fratios)) {
336                 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
337                 return -EINVAL;
338         }
339 
340         /* Now, calculate N.K */
341         Ndiv = target / Fref;
342 
343         fll_div->n = Ndiv;
344         Nmod = target % Fref;
345         pr_debug("Nmod=%d\n", Nmod);
346 
347         /* Calculate fractional part - scale up so we can round. */
348         Kpart = FIXED_FLL_SIZE * (long long)Nmod;
349 
350         do_div(Kpart, Fref);
351 
352         K = Kpart & 0xFFFFFFFF;
353 
354         if ((K % 10) >= 5)
355                 K += 5;
356 
357         /* Move down to proper range now rounding is done */
358         fll_div->k = K / 10;
359 
360         pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
361                  fll_div->n, fll_div->k,
362                  fll_div->fll_fratio, fll_div->fll_outdiv,
363                  fll_div->fll_clk_ref_div);
364 
365         return 0;
366 }
367 
368 static int _wm8993_set_fll(struct snd_soc_codec *codec, int fll_id, int source,
369                           unsigned int Fref, unsigned int Fout)
370 {
371         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
372         u16 reg1, reg4, reg5;
373         struct _fll_div fll_div;
374         int ret;
375 
376         /* Any change? */
377         if (Fref == wm8993->fll_fref && Fout == wm8993->fll_fout)
378                 return 0;
379 
380         /* Disable the FLL */
381         if (Fout == 0) {
382                 dev_dbg(codec->dev, "FLL disabled\n");
383                 wm8993->fll_fref = 0;
384                 wm8993->fll_fout = 0;
385 
386                 reg1 = snd_soc_read(codec, WM8993_FLL_CONTROL_1);
387                 reg1 &= ~WM8993_FLL_ENA;
388                 snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1);
389 
390                 return 0;
391         }
392 
393         ret = fll_factors(&fll_div, Fref, Fout);
394         if (ret != 0)
395                 return ret;
396 
397         reg5 = snd_soc_read(codec, WM8993_FLL_CONTROL_5);
398         reg5 &= ~WM8993_FLL_CLK_SRC_MASK;
399 
400         switch (fll_id) {
401         case WM8993_FLL_MCLK:
402                 break;
403 
404         case WM8993_FLL_LRCLK:
405                 reg5 |= 1;
406                 break;
407 
408         case WM8993_FLL_BCLK:
409                 reg5 |= 2;
410                 break;
411 
412         default:
413                 dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
414                 return -EINVAL;
415         }
416 
417         /* Any FLL configuration change requires that the FLL be
418          * disabled first. */
419         reg1 = snd_soc_read(codec, WM8993_FLL_CONTROL_1);
420         reg1 &= ~WM8993_FLL_ENA;
421         snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1);
422 
423         /* Apply the configuration */
424         if (fll_div.k)
425                 reg1 |= WM8993_FLL_FRAC_MASK;
426         else
427                 reg1 &= ~WM8993_FLL_FRAC_MASK;
428         snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1);
429 
430         snd_soc_write(codec, WM8993_FLL_CONTROL_2,
431                       (fll_div.fll_outdiv << WM8993_FLL_OUTDIV_SHIFT) |
432                       (fll_div.fll_fratio << WM8993_FLL_FRATIO_SHIFT));
433         snd_soc_write(codec, WM8993_FLL_CONTROL_3, fll_div.k);
434 
435         reg4 = snd_soc_read(codec, WM8993_FLL_CONTROL_4);
436         reg4 &= ~WM8993_FLL_N_MASK;
437         reg4 |= fll_div.n << WM8993_FLL_N_SHIFT;
438         snd_soc_write(codec, WM8993_FLL_CONTROL_4, reg4);
439 
440         reg5 &= ~WM8993_FLL_CLK_REF_DIV_MASK;
441         reg5 |= fll_div.fll_clk_ref_div << WM8993_FLL_CLK_REF_DIV_SHIFT;
442         snd_soc_write(codec, WM8993_FLL_CONTROL_5, reg5);
443 
444         /* Enable the FLL */
445         snd_soc_write(codec, WM8993_FLL_CONTROL_1, reg1 | WM8993_FLL_ENA);
446 
447         /* Both overestimates */
448         if (Fref < 1000000)
449                 msleep(3);
450         else
451                 msleep(1);
452 
453         dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
454 
455         wm8993->fll_fref = Fref;
456         wm8993->fll_fout = Fout;
457         wm8993->fll_src = source;
458 
459         return 0;
460 }
461 
462 static int wm8993_set_fll(struct snd_soc_dai *dai, int fll_id, int source,
463                           unsigned int Fref, unsigned int Fout)
464 {
465         return _wm8993_set_fll(dai->codec, fll_id, source, Fref, Fout);
466 }
467 
468 static int configure_clock(struct snd_soc_codec *codec)
469 {
470         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
471         unsigned int reg;
472 
473         /* This should be done on init() for bypass paths */
474         switch (wm8993->sysclk_source) {
475         case WM8993_SYSCLK_MCLK:
476                 dev_dbg(codec->dev, "Using %dHz MCLK\n", wm8993->mclk_rate);
477 
478                 reg = snd_soc_read(codec, WM8993_CLOCKING_2);
479                 reg &= ~(WM8993_MCLK_DIV | WM8993_SYSCLK_SRC);
480                 if (wm8993->mclk_rate > 13500000) {
481                         reg |= WM8993_MCLK_DIV;
482                         wm8993->sysclk_rate = wm8993->mclk_rate / 2;
483                 } else {
484                         reg &= ~WM8993_MCLK_DIV;
485                         wm8993->sysclk_rate = wm8993->mclk_rate;
486                 }
487                 snd_soc_write(codec, WM8993_CLOCKING_2, reg);
488                 break;
489 
490         case WM8993_SYSCLK_FLL:
491                 dev_dbg(codec->dev, "Using %dHz FLL clock\n",
492                         wm8993->fll_fout);
493 
494                 reg = snd_soc_read(codec, WM8993_CLOCKING_2);
495                 reg |= WM8993_SYSCLK_SRC;
496                 if (wm8993->fll_fout > 13500000) {
497                         reg |= WM8993_MCLK_DIV;
498                         wm8993->sysclk_rate = wm8993->fll_fout / 2;
499                 } else {
500                         reg &= ~WM8993_MCLK_DIV;
501                         wm8993->sysclk_rate = wm8993->fll_fout;
502                 }
503                 snd_soc_write(codec, WM8993_CLOCKING_2, reg);
504                 break;
505 
506         default:
507                 dev_err(codec->dev, "System clock not configured\n");
508                 return -EINVAL;
509         }
510 
511         dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm8993->sysclk_rate);
512 
513         return 0;
514 }
515 
516 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
517 static const DECLARE_TLV_DB_SCALE(drc_comp_threash, -4500, 75, 0);
518 static const DECLARE_TLV_DB_SCALE(drc_comp_amp, -2250, 75, 0);
519 static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0);
520 static const unsigned int drc_max_tlv[] = {
521         TLV_DB_RANGE_HEAD(2),
522         0, 2, TLV_DB_SCALE_ITEM(1200, 600, 0),
523         3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0),
524 };
525 static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0);
526 static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -1800, 300, 0);
527 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
528 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
529 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
530 
531 static const char *dac_deemph_text[] = {
532         "None",
533         "32kHz",
534         "44.1kHz",
535         "48kHz",
536 };
537 
538 static const struct soc_enum dac_deemph =
539         SOC_ENUM_SINGLE(WM8993_DAC_CTRL, 4, 4, dac_deemph_text);
540 
541 static const char *adc_hpf_text[] = {
542         "Hi-Fi",
543         "Voice 1",
544         "Voice 2",
545         "Voice 3",
546 };
547 
548 static const struct soc_enum adc_hpf =
549         SOC_ENUM_SINGLE(WM8993_ADC_CTRL, 5, 4, adc_hpf_text);
550 
551 static const char *drc_path_text[] = {
552         "ADC",
553         "DAC"
554 };
555 
556 static const struct soc_enum drc_path =
557         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 14, 2, drc_path_text);
558 
559 static const char *drc_r0_text[] = {
560         "1",
561         "1/2",
562         "1/4",
563         "1/8",
564         "1/16",
565         "",
566 };
567 
568 static const struct soc_enum drc_r0 =
569         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 8, 6, drc_r0_text);
570 
571 static const char *drc_r1_text[] = {
572         "1",
573         "1/2",
574         "1/4",
575         "1/8",
576         "",
577 };
578 
579 static const struct soc_enum drc_r1 =
580         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_4, 13, 5, drc_r1_text);
581 
582 static const char *drc_attack_text[] = {
583         "Reserved",
584         "181us",
585         "363us",
586         "726us",
587         "1.45ms",
588         "2.9ms",
589         "5.8ms",
590         "11.6ms",
591         "23.2ms",
592         "46.4ms",
593         "92.8ms",
594         "185.6ms",
595 };
596 
597 static const struct soc_enum drc_attack =
598         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 12, 12, drc_attack_text);
599 
600 static const char *drc_decay_text[] = {
601         "186ms",
602         "372ms",
603         "743ms",
604         "1.49s",
605         "2.97ms",
606         "5.94ms",
607         "11.89ms",
608         "23.78ms",
609         "47.56ms",
610 };
611 
612 static const struct soc_enum drc_decay =
613         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_2, 8, 9, drc_decay_text);
614 
615 static const char *drc_ff_text[] = {
616         "5 samples",
617         "9 samples",
618 };
619 
620 static const struct soc_enum drc_ff =
621         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 7, 2, drc_ff_text);
622 
623 static const char *drc_qr_rate_text[] = {
624         "0.725ms",
625         "1.45ms",
626         "5.8ms",
627 };
628 
629 static const struct soc_enum drc_qr_rate =
630         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_3, 0, 3, drc_qr_rate_text);
631 
632 static const char *drc_smooth_text[] = {
633         "Low",
634         "Medium",
635         "High",
636 };
637 
638 static const struct soc_enum drc_smooth =
639         SOC_ENUM_SINGLE(WM8993_DRC_CONTROL_1, 4, 3, drc_smooth_text);
640 
641 static const struct snd_kcontrol_new wm8993_snd_controls[] = {
642 SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8993_DIGITAL_SIDE_TONE,
643                5, 9, 12, 0, sidetone_tlv),
644 
645 SOC_SINGLE("DRC Switch", WM8993_DRC_CONTROL_1, 15, 1, 0),
646 SOC_ENUM("DRC Path", drc_path),
647 SOC_SINGLE_TLV("DRC Compressor Threshold Volume", WM8993_DRC_CONTROL_2,
648                2, 60, 1, drc_comp_threash),
649 SOC_SINGLE_TLV("DRC Compressor Amplitude Volume", WM8993_DRC_CONTROL_3,
650                11, 30, 1, drc_comp_amp),
651 SOC_ENUM("DRC R0", drc_r0),
652 SOC_ENUM("DRC R1", drc_r1),
653 SOC_SINGLE_TLV("DRC Minimum Volume", WM8993_DRC_CONTROL_1, 2, 3, 1,
654                drc_min_tlv),
655 SOC_SINGLE_TLV("DRC Maximum Volume", WM8993_DRC_CONTROL_1, 0, 3, 0,
656                drc_max_tlv),
657 SOC_ENUM("DRC Attack Rate", drc_attack),
658 SOC_ENUM("DRC Decay Rate", drc_decay),
659 SOC_ENUM("DRC FF Delay", drc_ff),
660 SOC_SINGLE("DRC Anti-clip Switch", WM8993_DRC_CONTROL_1, 9, 1, 0),
661 SOC_SINGLE("DRC Quick Release Switch", WM8993_DRC_CONTROL_1, 10, 1, 0),
662 SOC_SINGLE_TLV("DRC Quick Release Volume", WM8993_DRC_CONTROL_3, 2, 3, 0,
663                drc_qr_tlv),
664 SOC_ENUM("DRC Quick Release Rate", drc_qr_rate),
665 SOC_SINGLE("DRC Smoothing Switch", WM8993_DRC_CONTROL_1, 11, 1, 0),
666 SOC_SINGLE("DRC Smoothing Hysteresis Switch", WM8993_DRC_CONTROL_1, 8, 1, 0),
667 SOC_ENUM("DRC Smoothing Hysteresis Threshold", drc_smooth),
668 SOC_SINGLE_TLV("DRC Startup Volume", WM8993_DRC_CONTROL_4, 8, 18, 0,
669                drc_startup_tlv),
670 
671 SOC_SINGLE("EQ Switch", WM8993_EQ1, 0, 1, 0),
672 
673 SOC_DOUBLE_R_TLV("Capture Volume", WM8993_LEFT_ADC_DIGITAL_VOLUME,
674                  WM8993_RIGHT_ADC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv),
675 SOC_SINGLE("ADC High Pass Filter Switch", WM8993_ADC_CTRL, 8, 1, 0),
676 SOC_ENUM("ADC High Pass Filter Mode", adc_hpf),
677 
678 SOC_DOUBLE_R_TLV("Playback Volume", WM8993_LEFT_DAC_DIGITAL_VOLUME,
679                  WM8993_RIGHT_DAC_DIGITAL_VOLUME, 1, 96, 0, digital_tlv),
680 SOC_SINGLE_TLV("Playback Boost Volume", WM8993_AUDIO_INTERFACE_2, 10, 3, 0,
681                dac_boost_tlv),
682 SOC_ENUM("DAC Deemphasis", dac_deemph),
683 
684 SOC_SINGLE_TLV("SPKL DAC Volume", WM8993_SPKMIXL_ATTENUATION,
685                2, 1, 1, wm_hubs_spkmix_tlv),
686 
687 SOC_SINGLE_TLV("SPKR DAC Volume", WM8993_SPKMIXR_ATTENUATION,
688                2, 1, 1, wm_hubs_spkmix_tlv),
689 };
690 
691 static const struct snd_kcontrol_new wm8993_eq_controls[] = {
692 SOC_SINGLE_TLV("EQ1 Volume", WM8993_EQ2, 0, 24, 0, eq_tlv),
693 SOC_SINGLE_TLV("EQ2 Volume", WM8993_EQ3, 0, 24, 0, eq_tlv),
694 SOC_SINGLE_TLV("EQ3 Volume", WM8993_EQ4, 0, 24, 0, eq_tlv),
695 SOC_SINGLE_TLV("EQ4 Volume", WM8993_EQ5, 0, 24, 0, eq_tlv),
696 SOC_SINGLE_TLV("EQ5 Volume", WM8993_EQ6, 0, 24, 0, eq_tlv),
697 };
698 
699 static int clk_sys_event(struct snd_soc_dapm_widget *w,
700                          struct snd_kcontrol *kcontrol, int event)
701 {
702         struct snd_soc_codec *codec = w->codec;
703 
704         switch (event) {
705         case SND_SOC_DAPM_PRE_PMU:
706                 return configure_clock(codec);
707 
708         case SND_SOC_DAPM_POST_PMD:
709                 break;
710         }
711 
712         return 0;
713 }
714 
715 /*
716  * When used with DAC outputs only the WM8993 charge pump supports
717  * operation in class W mode, providing very low power consumption
718  * when used with digital sources.  Enable and disable this mode
719  * automatically depending on the mixer configuration.
720  *
721  * Currently the only supported paths are the direct DAC->headphone
722  * paths (which provide minimum power consumption anyway).
723  */
724 static int class_w_put(struct snd_kcontrol *kcontrol,
725                        struct snd_ctl_elem_value *ucontrol)
726 {
727         struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
728         struct snd_soc_dapm_widget *widget = wlist->widgets[0];
729         struct snd_soc_codec *codec = widget->codec;
730         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
731         int ret;
732 
733         /* Turn it off if we're using the main output mixer */
734         if (ucontrol->value.integer.value[0] == 0) {
735                 if (wm8993->class_w_users == 0) {
736                         dev_dbg(codec->dev, "Disabling Class W\n");
737                         snd_soc_update_bits(codec, WM8993_CLASS_W_0,
738                                             WM8993_CP_DYN_FREQ |
739                                             WM8993_CP_DYN_V,
740                                             0);
741                 }
742                 wm8993->class_w_users++;
743                 wm8993->hubs_data.class_w = true;
744         }
745 
746         /* Implement the change */
747         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
748 
749         /* Enable it if we're using the direct DAC path */
750         if (ucontrol->value.integer.value[0] == 1) {
751                 if (wm8993->class_w_users == 1) {
752                         dev_dbg(codec->dev, "Enabling Class W\n");
753                         snd_soc_update_bits(codec, WM8993_CLASS_W_0,
754                                             WM8993_CP_DYN_FREQ |
755                                             WM8993_CP_DYN_V,
756                                             WM8993_CP_DYN_FREQ |
757                                             WM8993_CP_DYN_V);
758                 }
759                 wm8993->class_w_users--;
760                 wm8993->hubs_data.class_w = false;
761         }
762 
763         dev_dbg(codec->dev, "Indirect DAC use count now %d\n",
764                 wm8993->class_w_users);
765 
766         return ret;
767 }
768 
769 #define SOC_DAPM_ENUM_W(xname, xenum) \
770 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
771         .info = snd_soc_info_enum_double, \
772         .get = snd_soc_dapm_get_enum_double, \
773         .put = class_w_put, \
774         .private_value = (unsigned long)&xenum }
775 
776 static const char *hp_mux_text[] = {
777         "Mixer",
778         "DAC",
779 };
780 
781 static const struct soc_enum hpl_enum =
782         SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER1, 8, 2, hp_mux_text);
783 
784 static const struct snd_kcontrol_new hpl_mux =
785         SOC_DAPM_ENUM_W("Left Headphone Mux", hpl_enum);
786 
787 static const struct soc_enum hpr_enum =
788         SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER2, 8, 2, hp_mux_text);
789 
790 static const struct snd_kcontrol_new hpr_mux =
791         SOC_DAPM_ENUM_W("Right Headphone Mux", hpr_enum);
792 
793 static const struct snd_kcontrol_new left_speaker_mixer[] = {
794 SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 7, 1, 0),
795 SOC_DAPM_SINGLE("IN1LP Switch", WM8993_SPEAKER_MIXER, 5, 1, 0),
796 SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 3, 1, 0),
797 SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
798 };
799 
800 static const struct snd_kcontrol_new right_speaker_mixer[] = {
801 SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 6, 1, 0),
802 SOC_DAPM_SINGLE("IN1RP Switch", WM8993_SPEAKER_MIXER, 4, 1, 0),
803 SOC_DAPM_SINGLE("Output Switch", WM8993_SPEAKER_MIXER, 2, 1, 0),
804 SOC_DAPM_SINGLE("DAC Switch", WM8993_SPEAKER_MIXER, 0, 1, 0),
805 };
806 
807 static const char *aif_text[] = {
808         "Left", "Right"
809 };
810 
811 static const struct soc_enum aifoutl_enum =
812         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_1, 15, 2, aif_text);
813 
814 static const struct snd_kcontrol_new aifoutl_mux =
815         SOC_DAPM_ENUM("AIFOUTL Mux", aifoutl_enum);
816 
817 static const struct soc_enum aifoutr_enum =
818         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_1, 14, 2, aif_text);
819 
820 static const struct snd_kcontrol_new aifoutr_mux =
821         SOC_DAPM_ENUM("AIFOUTR Mux", aifoutr_enum);
822 
823 static const struct soc_enum aifinl_enum =
824         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_2, 15, 2, aif_text);
825 
826 static const struct snd_kcontrol_new aifinl_mux =
827         SOC_DAPM_ENUM("AIFINL Mux", aifinl_enum);
828 
829 static const struct soc_enum aifinr_enum =
830         SOC_ENUM_SINGLE(WM8993_AUDIO_INTERFACE_2, 14, 2, aif_text);
831 
832 static const struct snd_kcontrol_new aifinr_mux =
833         SOC_DAPM_ENUM("AIFINR Mux", aifinr_enum);
834 
835 static const char *sidetone_text[] = {
836         "None", "Left", "Right"
837 };
838 
839 static const struct soc_enum sidetonel_enum =
840         SOC_ENUM_SINGLE(WM8993_DIGITAL_SIDE_TONE, 2, 3, sidetone_text);
841 
842 static const struct snd_kcontrol_new sidetonel_mux =
843         SOC_DAPM_ENUM("Left Sidetone", sidetonel_enum);
844 
845 static const struct soc_enum sidetoner_enum =
846         SOC_ENUM_SINGLE(WM8993_DIGITAL_SIDE_TONE, 0, 3, sidetone_text);
847 
848 static const struct snd_kcontrol_new sidetoner_mux =
849         SOC_DAPM_ENUM("Right Sidetone", sidetoner_enum);
850 
851 static const struct snd_soc_dapm_widget wm8993_dapm_widgets[] = {
852 SND_SOC_DAPM_SUPPLY("CLK_SYS", WM8993_BUS_CONTROL_1, 1, 0, clk_sys_event,
853                     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
854 SND_SOC_DAPM_SUPPLY("TOCLK", WM8993_CLOCKING_1, 14, 0, NULL, 0),
855 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8993_CLOCKING_3, 0, 0, NULL, 0),
856 SND_SOC_DAPM_SUPPLY("VMID", SND_SOC_NOPM, 0, 0, NULL, 0),
857 
858 SND_SOC_DAPM_ADC("ADCL", NULL, WM8993_POWER_MANAGEMENT_2, 1, 0),
859 SND_SOC_DAPM_ADC("ADCR", NULL, WM8993_POWER_MANAGEMENT_2, 0, 0),
860 
861 SND_SOC_DAPM_MUX("AIFOUTL Mux", SND_SOC_NOPM, 0, 0, &aifoutl_mux),
862 SND_SOC_DAPM_MUX("AIFOUTR Mux", SND_SOC_NOPM, 0, 0, &aifoutr_mux),
863 
864 SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
865 SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
866 
867 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
868 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
869 
870 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &aifinl_mux),
871 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &aifinr_mux),
872 
873 SND_SOC_DAPM_MUX("DACL Sidetone", SND_SOC_NOPM, 0, 0, &sidetonel_mux),
874 SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &sidetoner_mux),
875 
876 SND_SOC_DAPM_DAC("DACL", NULL, WM8993_POWER_MANAGEMENT_3, 1, 0),
877 SND_SOC_DAPM_DAC("DACR", NULL, WM8993_POWER_MANAGEMENT_3, 0, 0),
878 
879 SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
880 SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
881 
882 SND_SOC_DAPM_MIXER("SPKL", WM8993_POWER_MANAGEMENT_3, 8, 0,
883                    left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
884 SND_SOC_DAPM_MIXER("SPKR", WM8993_POWER_MANAGEMENT_3, 9, 0,
885                    right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
886 SND_SOC_DAPM_PGA("Direct Voice", SND_SOC_NOPM, 0, 0, NULL, 0),
887 };
888 
889 static const struct snd_soc_dapm_route routes[] = {
890         { "MICBIAS1", NULL, "VMID" },
891         { "MICBIAS2", NULL, "VMID" },
892 
893         { "ADCL", NULL, "CLK_SYS" },
894         { "ADCL", NULL, "CLK_DSP" },
895         { "ADCR", NULL, "CLK_SYS" },
896         { "ADCR", NULL, "CLK_DSP" },
897 
898         { "AIFOUTL Mux", "Left", "ADCL" },
899         { "AIFOUTL Mux", "Right", "ADCR" },
900         { "AIFOUTR Mux", "Left", "ADCL" },
901         { "AIFOUTR Mux", "Right", "ADCR" },
902 
903         { "AIFOUTL", NULL, "AIFOUTL Mux" },
904         { "AIFOUTR", NULL, "AIFOUTR Mux" },
905 
906         { "DACL Mux", "Left", "AIFINL" },
907         { "DACL Mux", "Right", "AIFINR" },
908         { "DACR Mux", "Left", "AIFINL" },
909         { "DACR Mux", "Right", "AIFINR" },
910 
911         { "DACL Sidetone", "Left", "ADCL" },
912         { "DACL Sidetone", "Right", "ADCR" },
913         { "DACR Sidetone", "Left", "ADCL" },
914         { "DACR Sidetone", "Right", "ADCR" },
915 
916         { "DACL", NULL, "CLK_SYS" },
917         { "DACL", NULL, "CLK_DSP" },
918         { "DACL", NULL, "DACL Mux" },
919         { "DACL", NULL, "DACL Sidetone" },
920         { "DACR", NULL, "CLK_SYS" },
921         { "DACR", NULL, "CLK_DSP" },
922         { "DACR", NULL, "DACR Mux" },
923         { "DACR", NULL, "DACR Sidetone" },
924 
925         { "Left Output Mixer", "DAC Switch", "DACL" },
926 
927         { "Right Output Mixer", "DAC Switch", "DACR" },
928 
929         { "Left Output PGA", NULL, "CLK_SYS" },
930 
931         { "Right Output PGA", NULL, "CLK_SYS" },
932 
933         { "SPKL", "DAC Switch", "DACL" },
934         { "SPKL", NULL, "CLK_SYS" },
935 
936         { "SPKR", "DAC Switch", "DACR" },
937         { "SPKR", NULL, "CLK_SYS" },
938 
939         { "Left Headphone Mux", "DAC", "DACL" },
940         { "Right Headphone Mux", "DAC", "DACR" },
941 };
942 
943 static int wm8993_set_bias_level(struct snd_soc_codec *codec,
944                                  enum snd_soc_bias_level level)
945 {
946         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
947         int ret;
948 
949         switch (level) {
950         case SND_SOC_BIAS_ON:
951         case SND_SOC_BIAS_PREPARE:
952                 /* VMID=2*40k */
953                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
954                                     WM8993_VMID_SEL_MASK, 0x2);
955                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
956                                     WM8993_TSHUT_ENA, WM8993_TSHUT_ENA);
957                 break;
958 
959         case SND_SOC_BIAS_STANDBY:
960                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
961                         ret = regulator_bulk_enable(ARRAY_SIZE(wm8993->supplies),
962                                                     wm8993->supplies);
963                         if (ret != 0)
964                                 return ret;
965 
966                         snd_soc_cache_sync(codec);
967 
968                         /* Tune DC servo configuration */
969                         snd_soc_write(codec, 0x44, 3);
970                         snd_soc_write(codec, 0x56, 3);
971                         snd_soc_write(codec, 0x44, 0);
972 
973                         /* Bring up VMID with fast soft start */
974                         snd_soc_update_bits(codec, WM8993_ANTIPOP2,
975                                             WM8993_STARTUP_BIAS_ENA |
976                                             WM8993_VMID_BUF_ENA |
977                                             WM8993_VMID_RAMP_MASK |
978                                             WM8993_BIAS_SRC,
979                                             WM8993_STARTUP_BIAS_ENA |
980                                             WM8993_VMID_BUF_ENA |
981                                             WM8993_VMID_RAMP_MASK |
982                                             WM8993_BIAS_SRC);
983 
984                         /* If either line output is single ended we
985                          * need the VMID buffer */
986                         if (!wm8993->pdata.lineout1_diff ||
987                             !wm8993->pdata.lineout2_diff)
988                                 snd_soc_update_bits(codec, WM8993_ANTIPOP1,
989                                                  WM8993_LINEOUT_VMID_BUF_ENA,
990                                                  WM8993_LINEOUT_VMID_BUF_ENA);
991 
992                         /* VMID=2*40k */
993                         snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
994                                             WM8993_VMID_SEL_MASK |
995                                             WM8993_BIAS_ENA,
996                                             WM8993_BIAS_ENA | 0x2);
997                         msleep(32);
998 
999                         /* Switch to normal bias */
1000                         snd_soc_update_bits(codec, WM8993_ANTIPOP2,
1001                                             WM8993_BIAS_SRC |
1002                                             WM8993_STARTUP_BIAS_ENA, 0);
1003                 }
1004 
1005                 /* VMID=2*240k */
1006                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1007                                     WM8993_VMID_SEL_MASK, 0x4);
1008 
1009                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_2,
1010                                     WM8993_TSHUT_ENA, 0);
1011                 break;
1012 
1013         case SND_SOC_BIAS_OFF:
1014                 snd_soc_update_bits(codec, WM8993_ANTIPOP1,
1015                                     WM8993_LINEOUT_VMID_BUF_ENA, 0);
1016 
1017                 snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_1,
1018                                     WM8993_VMID_SEL_MASK | WM8993_BIAS_ENA,
1019                                     0);
1020 
1021                 snd_soc_update_bits(codec, WM8993_ANTIPOP2,
1022                                     WM8993_STARTUP_BIAS_ENA |
1023                                     WM8993_VMID_BUF_ENA |
1024                                     WM8993_VMID_RAMP_MASK |
1025                                     WM8993_BIAS_SRC, 0);
1026 
1027 #ifdef CONFIG_REGULATOR
1028                /* Post 2.6.34 we will be able to get a callback when
1029                 * the regulators are disabled which we can use but
1030                 * for now just assume that the power will be cut if
1031                 * the regulator API is in use.
1032                 */
1033                 codec->cache_sync = 1;
1034 #endif
1035 
1036                 regulator_bulk_disable(ARRAY_SIZE(wm8993->supplies),
1037                                        wm8993->supplies);
1038                 break;
1039         }
1040 
1041         codec->dapm.bias_level = level;
1042 
1043         return 0;
1044 }
1045 
1046 static int wm8993_set_sysclk(struct snd_soc_dai *codec_dai,
1047                              int clk_id, unsigned int freq, int dir)
1048 {
1049         struct snd_soc_codec *codec = codec_dai->codec;
1050         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1051 
1052         switch (clk_id) {
1053         case WM8993_SYSCLK_MCLK:
1054                 wm8993->mclk_rate = freq;
1055         case WM8993_SYSCLK_FLL:
1056                 wm8993->sysclk_source = clk_id;
1057                 break;
1058 
1059         default:
1060                 return -EINVAL;
1061         }
1062 
1063         return 0;
1064 }
1065 
1066 static int wm8993_set_dai_fmt(struct snd_soc_dai *dai,
1067                               unsigned int fmt)
1068 {
1069         struct snd_soc_codec *codec = dai->codec;
1070         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1071         unsigned int aif1 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_1);
1072         unsigned int aif4 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_4);
1073 
1074         aif1 &= ~(WM8993_BCLK_DIR | WM8993_AIF_BCLK_INV |
1075                   WM8993_AIF_LRCLK_INV | WM8993_AIF_FMT_MASK);
1076         aif4 &= ~WM8993_LRCLK_DIR;
1077 
1078         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1079         case SND_SOC_DAIFMT_CBS_CFS:
1080                 wm8993->master = 0;
1081                 break;
1082         case SND_SOC_DAIFMT_CBS_CFM:
1083                 aif4 |= WM8993_LRCLK_DIR;
1084                 wm8993->master = 1;
1085                 break;
1086         case SND_SOC_DAIFMT_CBM_CFS:
1087                 aif1 |= WM8993_BCLK_DIR;
1088                 wm8993->master = 1;
1089                 break;
1090         case SND_SOC_DAIFMT_CBM_CFM:
1091                 aif1 |= WM8993_BCLK_DIR;
1092                 aif4 |= WM8993_LRCLK_DIR;
1093                 wm8993->master = 1;
1094                 break;
1095         default:
1096                 return -EINVAL;
1097         }
1098 
1099         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1100         case SND_SOC_DAIFMT_DSP_B:
1101                 aif1 |= WM8993_AIF_LRCLK_INV;
1102         case SND_SOC_DAIFMT_DSP_A:
1103                 aif1 |= 0x18;
1104                 break;
1105         case SND_SOC_DAIFMT_I2S:
1106                 aif1 |= 0x10;
1107                 break;
1108         case SND_SOC_DAIFMT_RIGHT_J:
1109                 break;
1110         case SND_SOC_DAIFMT_LEFT_J:
1111                 aif1 |= 0x8;
1112                 break;
1113         default:
1114                 return -EINVAL;
1115         }
1116 
1117         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1118         case SND_SOC_DAIFMT_DSP_A:
1119         case SND_SOC_DAIFMT_DSP_B:
1120                 /* frame inversion not valid for DSP modes */
1121                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1122                 case SND_SOC_DAIFMT_NB_NF:
1123                         break;
1124                 case SND_SOC_DAIFMT_IB_NF:
1125                         aif1 |= WM8993_AIF_BCLK_INV;
1126                         break;
1127                 default:
1128                         return -EINVAL;
1129                 }
1130                 break;
1131 
1132         case SND_SOC_DAIFMT_I2S:
1133         case SND_SOC_DAIFMT_RIGHT_J:
1134         case SND_SOC_DAIFMT_LEFT_J:
1135                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1136                 case SND_SOC_DAIFMT_NB_NF:
1137                         break;
1138                 case SND_SOC_DAIFMT_IB_IF:
1139                         aif1 |= WM8993_AIF_BCLK_INV | WM8993_AIF_LRCLK_INV;
1140                         break;
1141                 case SND_SOC_DAIFMT_IB_NF:
1142                         aif1 |= WM8993_AIF_BCLK_INV;
1143                         break;
1144                 case SND_SOC_DAIFMT_NB_IF:
1145                         aif1 |= WM8993_AIF_LRCLK_INV;
1146                         break;
1147                 default:
1148                         return -EINVAL;
1149                 }
1150                 break;
1151         default:
1152                 return -EINVAL;
1153         }
1154 
1155         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
1156         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
1157 
1158         return 0;
1159 }
1160 
1161 static int wm8993_hw_params(struct snd_pcm_substream *substream,
1162                             struct snd_pcm_hw_params *params,
1163                             struct snd_soc_dai *dai)
1164 {
1165         struct snd_soc_codec *codec = dai->codec;
1166         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1167         int ret, i, best, best_val, cur_val;
1168         unsigned int clocking1, clocking3, aif1, aif4;
1169 
1170         clocking1 = snd_soc_read(codec, WM8993_CLOCKING_1);
1171         clocking1 &= ~WM8993_BCLK_DIV_MASK;
1172 
1173         clocking3 = snd_soc_read(codec, WM8993_CLOCKING_3);
1174         clocking3 &= ~(WM8993_CLK_SYS_RATE_MASK | WM8993_SAMPLE_RATE_MASK);
1175 
1176         aif1 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_1);
1177         aif1 &= ~WM8993_AIF_WL_MASK;
1178 
1179         aif4 = snd_soc_read(codec, WM8993_AUDIO_INTERFACE_4);
1180         aif4 &= ~WM8993_LRCLK_RATE_MASK;
1181 
1182         /* What BCLK do we need? */
1183         wm8993->fs = params_rate(params);
1184         wm8993->bclk = 2 * wm8993->fs;
1185         if (wm8993->tdm_slots) {
1186                 dev_dbg(codec->dev, "Configuring for %d %d bit TDM slots\n",
1187                         wm8993->tdm_slots, wm8993->tdm_width);
1188                 wm8993->bclk *= wm8993->tdm_width * wm8993->tdm_slots;
1189         } else {
1190                 switch (params_format(params)) {
1191                 case SNDRV_PCM_FORMAT_S16_LE:
1192                         wm8993->bclk *= 16;
1193                         break;
1194                 case SNDRV_PCM_FORMAT_S20_3LE:
1195                         wm8993->bclk *= 20;
1196                         aif1 |= 0x8;
1197                         break;
1198                 case SNDRV_PCM_FORMAT_S24_LE:
1199                         wm8993->bclk *= 24;
1200                         aif1 |= 0x10;
1201                         break;
1202                 case SNDRV_PCM_FORMAT_S32_LE:
1203                         wm8993->bclk *= 32;
1204                         aif1 |= 0x18;
1205                         break;
1206                 default:
1207                         return -EINVAL;
1208                 }
1209         }
1210 
1211         dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8993->bclk);
1212 
1213         ret = configure_clock(codec);
1214         if (ret != 0)
1215                 return ret;
1216 
1217         /* Select nearest CLK_SYS_RATE */
1218         best = 0;
1219         best_val = abs((wm8993->sysclk_rate / clk_sys_rates[0].ratio)
1220                        - wm8993->fs);
1221         for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1222                 cur_val = abs((wm8993->sysclk_rate /
1223                                clk_sys_rates[i].ratio) - wm8993->fs);
1224                 if (cur_val < best_val) {
1225                         best = i;
1226                         best_val = cur_val;
1227                 }
1228         }
1229         dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
1230                 clk_sys_rates[best].ratio);
1231         clocking3 |= (clk_sys_rates[best].clk_sys_rate
1232                       << WM8993_CLK_SYS_RATE_SHIFT);
1233 
1234         /* SAMPLE_RATE */
1235         best = 0;
1236         best_val = abs(wm8993->fs - sample_rates[0].rate);
1237         for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1238                 /* Closest match */
1239                 cur_val = abs(wm8993->fs - sample_rates[i].rate);
1240                 if (cur_val < best_val) {
1241                         best = i;
1242                         best_val = cur_val;
1243                 }
1244         }
1245         dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
1246                 sample_rates[best].rate);
1247         clocking3 |= (sample_rates[best].sample_rate
1248                       << WM8993_SAMPLE_RATE_SHIFT);
1249 
1250         /* BCLK_DIV */
1251         best = 0;
1252         best_val = INT_MAX;
1253         for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1254                 cur_val = ((wm8993->sysclk_rate * 10) / bclk_divs[i].div)
1255                         - wm8993->bclk;
1256                 if (cur_val < 0) /* Table is sorted */
1257                         break;
1258                 if (cur_val < best_val) {
1259                         best = i;
1260                         best_val = cur_val;
1261                 }
1262         }
1263         wm8993->bclk = (wm8993->sysclk_rate * 10) / bclk_divs[best].div;
1264         dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1265                 bclk_divs[best].div, wm8993->bclk);
1266         clocking1 |= bclk_divs[best].bclk_div << WM8993_BCLK_DIV_SHIFT;
1267 
1268         /* LRCLK is a simple fraction of BCLK */
1269         dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm8993->bclk / wm8993->fs);
1270         aif4 |= wm8993->bclk / wm8993->fs;
1271 
1272         snd_soc_write(codec, WM8993_CLOCKING_1, clocking1);
1273         snd_soc_write(codec, WM8993_CLOCKING_3, clocking3);
1274         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_1, aif1);
1275         snd_soc_write(codec, WM8993_AUDIO_INTERFACE_4, aif4);
1276 
1277         /* ReTune Mobile? */
1278         if (wm8993->pdata.num_retune_configs) {
1279                 u16 eq1 = snd_soc_read(codec, WM8993_EQ1);
1280                 struct wm8993_retune_mobile_setting *s;
1281 
1282                 best = 0;
1283                 best_val = abs(wm8993->pdata.retune_configs[0].rate
1284                                - wm8993->fs);
1285                 for (i = 0; i < wm8993->pdata.num_retune_configs; i++) {
1286                         cur_val = abs(wm8993->pdata.retune_configs[i].rate
1287                                       - wm8993->fs);
1288                         if (cur_val < best_val) {
1289                                 best_val = cur_val;
1290                                 best = i;
1291                         }
1292                 }
1293                 s = &wm8993->pdata.retune_configs[best];
1294 
1295                 dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n",
1296                         s->name, s->rate);
1297 
1298                 /* Disable EQ while we reconfigure */
1299                 snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, 0);
1300 
1301                 for (i = 1; i < ARRAY_SIZE(s->config); i++)
1302                         snd_soc_write(codec, WM8993_EQ1 + i, s->config[i]);
1303 
1304                 snd_soc_update_bits(codec, WM8993_EQ1, WM8993_EQ_ENA, eq1);
1305         }
1306 
1307         return 0;
1308 }
1309 
1310 static int wm8993_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1311 {
1312         struct snd_soc_codec *codec = codec_dai->codec;
1313         unsigned int reg;
1314 
1315         reg = snd_soc_read(codec, WM8993_DAC_CTRL);
1316 
1317         if (mute)
1318                 reg |= WM8993_DAC_MUTE;
1319         else
1320                 reg &= ~WM8993_DAC_MUTE;
1321 
1322         snd_soc_write(codec, WM8993_DAC_CTRL, reg);
1323 
1324         return 0;
1325 }
1326 
1327 static int wm8993_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
1328                                unsigned int rx_mask, int slots, int slot_width)
1329 {
1330         struct snd_soc_codec *codec = dai->codec;
1331         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1332         int aif1 = 0;
1333         int aif2 = 0;
1334 
1335         /* Don't need to validate anything if we're turning off TDM */
1336         if (slots == 0) {
1337                 wm8993->tdm_slots = 0;
1338                 goto out;
1339         }
1340 
1341         /* Note that we allow configurations we can't handle ourselves - 
1342          * for example, we can generate clocks for slots 2 and up even if
1343          * we can't use those slots ourselves.
1344          */
1345         aif1 |= WM8993_AIFADC_TDM;
1346         aif2 |= WM8993_AIFDAC_TDM;
1347 
1348         switch (rx_mask) {
1349         case 3:
1350                 break;
1351         case 0xc:
1352                 aif1 |= WM8993_AIFADC_TDM_CHAN;
1353                 break;
1354         default:
1355                 return -EINVAL;
1356         }
1357 
1358 
1359         switch (tx_mask) {
1360         case 3:
1361                 break;
1362         case 0xc:
1363                 aif2 |= WM8993_AIFDAC_TDM_CHAN;
1364                 break;
1365         default:
1366                 return -EINVAL;
1367         }
1368 
1369 out:
1370         wm8993->tdm_width = slot_width;
1371         wm8993->tdm_slots = slots / 2;
1372 
1373         snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_1,
1374                             WM8993_AIFADC_TDM | WM8993_AIFADC_TDM_CHAN, aif1);
1375         snd_soc_update_bits(codec, WM8993_AUDIO_INTERFACE_2,
1376                             WM8993_AIFDAC_TDM | WM8993_AIFDAC_TDM_CHAN, aif2);
1377 
1378         return 0;
1379 }
1380 
1381 static const struct snd_soc_dai_ops wm8993_ops = {
1382         .set_sysclk = wm8993_set_sysclk,
1383         .set_fmt = wm8993_set_dai_fmt,
1384         .hw_params = wm8993_hw_params,
1385         .digital_mute = wm8993_digital_mute,
1386         .set_pll = wm8993_set_fll,
1387         .set_tdm_slot = wm8993_set_tdm_slot,
1388 };
1389 
1390 #define WM8993_RATES SNDRV_PCM_RATE_8000_48000
1391 
1392 #define WM8993_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
1393                         SNDRV_PCM_FMTBIT_S20_3LE |\
1394                         SNDRV_PCM_FMTBIT_S24_LE |\
1395                         SNDRV_PCM_FMTBIT_S32_LE)
1396 
1397 static struct snd_soc_dai_driver wm8993_dai = {
1398         .name = "wm8993-hifi",
1399         .playback = {
1400                 .stream_name = "Playback",
1401                 .channels_min = 1,
1402                 .channels_max = 2,
1403                 .rates = WM8993_RATES,
1404                 .formats = WM8993_FORMATS,
1405         },
1406         .capture = {
1407                  .stream_name = "Capture",
1408                  .channels_min = 1,
1409                  .channels_max = 2,
1410                  .rates = WM8993_RATES,
1411                  .formats = WM8993_FORMATS,
1412          },
1413         .ops = &wm8993_ops,
1414         .symmetric_rates = 1,
1415 };
1416 
1417 static int wm8993_probe(struct snd_soc_codec *codec)
1418 {
1419         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1420         struct snd_soc_dapm_context *dapm = &codec->dapm;
1421         int ret, i, val;
1422 
1423         wm8993->hubs_data.hp_startup_mode = 1;
1424         wm8993->hubs_data.dcs_codes_l = -2;
1425         wm8993->hubs_data.dcs_codes_r = -2;
1426         wm8993->hubs_data.series_startup = 1;
1427 
1428         ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
1429         if (ret != 0) {
1430                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1431                 return ret;
1432         }
1433 
1434         for (i = 0; i < ARRAY_SIZE(wm8993->supplies); i++)
1435                 wm8993->supplies[i].supply = wm8993_supply_names[i];
1436 
1437         ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8993->supplies),
1438                                  wm8993->supplies);
1439         if (ret != 0) {
1440                 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
1441                 return ret;
1442         }
1443 
1444         ret = regulator_bulk_enable(ARRAY_SIZE(wm8993->supplies),
1445                                     wm8993->supplies);
1446         if (ret != 0) {
1447                 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
1448                 goto err_get;
1449         }
1450 
1451         val = snd_soc_read(codec, WM8993_SOFTWARE_RESET);
1452         if (val != wm8993_reg_defaults[WM8993_SOFTWARE_RESET]) {
1453                 dev_err(codec->dev, "Invalid ID register value %x\n", val);
1454                 ret = -EINVAL;
1455                 goto err_enable;
1456         }
1457 
1458         ret = snd_soc_write(codec, WM8993_SOFTWARE_RESET, 0xffff);
1459         if (ret != 0)
1460                 goto err_enable;
1461 
1462         codec->cache_only = 1;
1463 
1464         /* By default we're using the output mixers */
1465         wm8993->class_w_users = 2;
1466 
1467         /* Latch volume update bits and default ZC on */
1468         snd_soc_update_bits(codec, WM8993_RIGHT_DAC_DIGITAL_VOLUME,
1469                             WM8993_DAC_VU, WM8993_DAC_VU);
1470         snd_soc_update_bits(codec, WM8993_RIGHT_ADC_DIGITAL_VOLUME,
1471                             WM8993_ADC_VU, WM8993_ADC_VU);
1472 
1473         /* Manualy manage the HPOUT sequencing for independent stereo
1474          * control. */
1475         snd_soc_update_bits(codec, WM8993_ANALOGUE_HP_0,
1476                             WM8993_HPOUT1_AUTO_PU, 0);
1477 
1478         /* Use automatic clock configuration */
1479         snd_soc_update_bits(codec, WM8993_CLOCKING_4, WM8993_SR_MODE, 0);
1480 
1481         wm_hubs_handle_analogue_pdata(codec, wm8993->pdata.lineout1_diff,
1482                                       wm8993->pdata.lineout2_diff,
1483                                       wm8993->pdata.lineout1fb,
1484                                       wm8993->pdata.lineout2fb,
1485                                       wm8993->pdata.jd_scthr,
1486                                       wm8993->pdata.jd_thr,
1487                                       wm8993->pdata.micbias1_lvl,
1488                                       wm8993->pdata.micbias2_lvl);
1489 
1490         ret = wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1491         if (ret != 0)
1492                 goto err_enable;
1493 
1494         snd_soc_add_controls(codec, wm8993_snd_controls,
1495                              ARRAY_SIZE(wm8993_snd_controls));
1496         if (wm8993->pdata.num_retune_configs != 0) {
1497                 dev_dbg(codec->dev, "Using ReTune Mobile\n");
1498         } else {
1499                 dev_dbg(codec->dev, "No ReTune Mobile, using normal EQ\n");
1500                 snd_soc_add_controls(codec, wm8993_eq_controls,
1501                                      ARRAY_SIZE(wm8993_eq_controls));
1502         }
1503 
1504         snd_soc_dapm_new_controls(dapm, wm8993_dapm_widgets,
1505                                   ARRAY_SIZE(wm8993_dapm_widgets));
1506         wm_hubs_add_analogue_controls(codec);
1507 
1508         snd_soc_dapm_add_routes(dapm, routes, ARRAY_SIZE(routes));
1509         wm_hubs_add_analogue_routes(codec, wm8993->pdata.lineout1_diff,
1510                                     wm8993->pdata.lineout2_diff);
1511 
1512         return 0;
1513 
1514 err_enable:
1515         regulator_bulk_disable(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
1516 err_get:
1517         regulator_bulk_free(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
1518         return ret;
1519 }
1520 
1521 static int wm8993_remove(struct snd_soc_codec *codec)
1522 {
1523         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1524 
1525         wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF);
1526         regulator_bulk_free(ARRAY_SIZE(wm8993->supplies), wm8993->supplies);
1527         return 0;
1528 }
1529 
1530 #ifdef CONFIG_PM
1531 static int wm8993_suspend(struct snd_soc_codec *codec)
1532 {
1533         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1534         int fll_fout = wm8993->fll_fout;
1535         int fll_fref  = wm8993->fll_fref;
1536         int ret;
1537 
1538         /* Stop the FLL in an orderly fashion */
1539         ret = _wm8993_set_fll(codec, 0, 0, 0, 0);
1540         if (ret != 0) {
1541                 dev_err(codec->dev, "Failed to stop FLL\n");
1542                 return ret;
1543         }
1544 
1545         wm8993->fll_fout = fll_fout;
1546         wm8993->fll_fref = fll_fref;
1547 
1548         wm8993_set_bias_level(codec, SND_SOC_BIAS_OFF);
1549 
1550         return 0;
1551 }
1552 
1553 static int wm8993_resume(struct snd_soc_codec *codec)
1554 {
1555         struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
1556         int ret;
1557 
1558         wm8993_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1559 
1560         /* Restart the FLL? */
1561         if (wm8993->fll_fout) {
1562                 int fll_fout = wm8993->fll_fout;
1563                 int fll_fref  = wm8993->fll_fref;
1564 
1565                 wm8993->fll_fref = 0;
1566                 wm8993->fll_fout = 0;
1567 
1568                 ret = _wm8993_set_fll(codec, 0, wm8993->fll_src,
1569                                      fll_fref, fll_fout);
1570                 if (ret != 0)
1571                         dev_err(codec->dev, "Failed to restart FLL\n");
1572         }
1573 
1574         return 0;
1575 }
1576 #else
1577 #define wm8993_suspend NULL
1578 #define wm8993_resume NULL
1579 #endif
1580 
1581 static struct snd_soc_codec_driver soc_codec_dev_wm8993 = {
1582         .probe =        wm8993_probe,
1583         .remove =       wm8993_remove,
1584         .suspend =      wm8993_suspend,
1585         .resume =       wm8993_resume,
1586         .set_bias_level = wm8993_set_bias_level,
1587         .reg_cache_size = ARRAY_SIZE(wm8993_reg_defaults),
1588         .reg_word_size = sizeof(u16),
1589         .reg_cache_default = wm8993_reg_defaults,
1590         .volatile_register = wm8993_volatile,
1591 };
1592 
1593 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1594 static __devinit int wm8993_i2c_probe(struct i2c_client *i2c,
1595                                       const struct i2c_device_id *id)
1596 {
1597         struct wm8993_priv *wm8993;
1598         int ret;
1599 
1600         wm8993 = devm_kzalloc(&i2c->dev, sizeof(struct wm8993_priv),
1601                               GFP_KERNEL);
1602         if (wm8993 == NULL)
1603                 return -ENOMEM;
1604 
1605         i2c_set_clientdata(i2c, wm8993);
1606 
1607         ret = snd_soc_register_codec(&i2c->dev,
1608                         &soc_codec_dev_wm8993, &wm8993_dai, 1);
1609         return ret;
1610 }
1611 
1612 static __devexit int wm8993_i2c_remove(struct i2c_client *client)
1613 {
1614         snd_soc_unregister_codec(&client->dev);
1615         kfree(i2c_get_clientdata(client));
1616         return 0;
1617 }
1618 
1619 static const struct i2c_device_id wm8993_i2c_id[] = {
1620         { "wm8993", 0 },
1621         { }
1622 };
1623 MODULE_DEVICE_TABLE(i2c, wm8993_i2c_id);
1624 
1625 static struct i2c_driver wm8993_i2c_driver = {
1626         .driver = {
1627                 .name = "wm8993",
1628                 .owner = THIS_MODULE,
1629         },
1630         .probe =    wm8993_i2c_probe,
1631         .remove =   __devexit_p(wm8993_i2c_remove),
1632         .id_table = wm8993_i2c_id,
1633 };
1634 #endif
1635 
1636 static int __init wm8993_modinit(void)
1637 {
1638         int ret = 0;
1639 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1640         ret = i2c_add_driver(&wm8993_i2c_driver);
1641         if (ret != 0) {
1642                 pr_err("WM8993: Unable to register I2C driver: %d\n",
1643                        ret);
1644         }
1645 #endif
1646         return ret;
1647 }
1648 module_init(wm8993_modinit);
1649 
1650 static void __exit wm8993_exit(void)
1651 {
1652 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1653         i2c_del_driver(&wm8993_i2c_driver);
1654 #endif
1655 }
1656 module_exit(wm8993_exit);
1657 
1658 
1659 MODULE_DESCRIPTION("ASoC WM8993 driver");
1660 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1661 MODULE_LICENSE("GPL");
1662 

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