53bbfac6a83ad14ed43d2aafca2514ea3a319468
[pandora-kernel.git] / sound / soc / codecs / wm8904.c
1 /*
2  * wm8904.c  --  WM8904 ALSA SoC Audio driver
3  *
4  * Copyright 2009-12 Wolfson Microelectronics plc
5  *
6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7  *
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  */
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/delay.h>
18 #include <linux/pm.h>
19 #include <linux/i2c.h>
20 #include <linux/regmap.h>
21 #include <linux/regulator/consumer.h>
22 #include <linux/slab.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/soc.h>
27 #include <sound/initval.h>
28 #include <sound/tlv.h>
29 #include <sound/wm8904.h>
30
31 #include "wm8904.h"
32
33 enum wm8904_type {
34         WM8904,
35         WM8912,
36 };
37
38 #define WM8904_NUM_DCS_CHANNELS 4
39
40 #define WM8904_NUM_SUPPLIES 5
41 static const char *wm8904_supply_names[WM8904_NUM_SUPPLIES] = {
42         "DCVDD",
43         "DBVDD",
44         "AVDD",
45         "CPVDD",
46         "MICVDD",
47 };
48
49 /* codec private data */
50 struct wm8904_priv {
51         struct regmap *regmap;
52
53         enum wm8904_type devtype;
54
55         struct regulator_bulk_data supplies[WM8904_NUM_SUPPLIES];
56
57         struct wm8904_pdata *pdata;
58
59         int deemph;
60
61         /* Platform provided DRC configuration */
62         const char **drc_texts;
63         int drc_cfg;
64         struct soc_enum drc_enum;
65
66         /* Platform provided ReTune mobile configuration */
67         int num_retune_mobile_texts;
68         const char **retune_mobile_texts;
69         int retune_mobile_cfg;
70         struct soc_enum retune_mobile_enum;
71
72         /* FLL setup */
73         int fll_src;
74         int fll_fref;
75         int fll_fout;
76
77         /* Clocking configuration */
78         unsigned int mclk_rate;
79         int sysclk_src;
80         unsigned int sysclk_rate;
81
82         int tdm_width;
83         int tdm_slots;
84         int bclk;
85         int fs;
86
87         /* DC servo configuration - cached offset values */
88         int dcs_state[WM8904_NUM_DCS_CHANNELS];
89 };
90
91 static const struct reg_default wm8904_reg_defaults[] = {
92         { 4,   0x0018 },     /* R4   - Bias Control 0 */
93         { 5,   0x0000 },     /* R5   - VMID Control 0 */
94         { 6,   0x0000 },     /* R6   - Mic Bias Control 0 */
95         { 7,   0x0000 },     /* R7   - Mic Bias Control 1 */
96         { 8,   0x0001 },     /* R8   - Analogue DAC 0 */
97         { 9,   0x9696 },     /* R9   - mic Filter Control */
98         { 10,  0x0001 },     /* R10  - Analogue ADC 0 */
99         { 12,  0x0000 },     /* R12  - Power Management 0 */
100         { 14,  0x0000 },     /* R14  - Power Management 2 */
101         { 15,  0x0000 },     /* R15  - Power Management 3 */
102         { 18,  0x0000 },     /* R18  - Power Management 6 */
103         { 20,  0x945E },     /* R20  - Clock Rates 0 */
104         { 21,  0x0C05 },     /* R21  - Clock Rates 1 */
105         { 22,  0x0006 },     /* R22  - Clock Rates 2 */
106         { 24,  0x0050 },     /* R24  - Audio Interface 0 */
107         { 25,  0x000A },     /* R25  - Audio Interface 1 */
108         { 26,  0x00E4 },     /* R26  - Audio Interface 2 */
109         { 27,  0x0040 },     /* R27  - Audio Interface 3 */
110         { 30,  0x00C0 },     /* R30  - DAC Digital Volume Left */
111         { 31,  0x00C0 },     /* R31  - DAC Digital Volume Right */
112         { 32,  0x0000 },     /* R32  - DAC Digital 0 */
113         { 33,  0x0008 },     /* R33  - DAC Digital 1 */
114         { 36,  0x00C0 },     /* R36  - ADC Digital Volume Left */
115         { 37,  0x00C0 },     /* R37  - ADC Digital Volume Right */
116         { 38,  0x0010 },     /* R38  - ADC Digital 0 */
117         { 39,  0x0000 },     /* R39  - Digital Microphone 0 */
118         { 40,  0x01AF },     /* R40  - DRC 0 */
119         { 41,  0x3248 },     /* R41  - DRC 1 */
120         { 42,  0x0000 },     /* R42  - DRC 2 */
121         { 43,  0x0000 },     /* R43  - DRC 3 */
122         { 44,  0x0085 },     /* R44  - Analogue Left Input 0 */
123         { 45,  0x0085 },     /* R45  - Analogue Right Input 0 */
124         { 46,  0x0044 },     /* R46  - Analogue Left Input 1 */
125         { 47,  0x0044 },     /* R47  - Analogue Right Input 1 */
126         { 57,  0x002D },     /* R57  - Analogue OUT1 Left */
127         { 58,  0x002D },     /* R58  - Analogue OUT1 Right */
128         { 59,  0x0039 },     /* R59  - Analogue OUT2 Left */
129         { 60,  0x0039 },     /* R60  - Analogue OUT2 Right */
130         { 61,  0x0000 },     /* R61  - Analogue OUT12 ZC */
131         { 67,  0x0000 },     /* R67  - DC Servo 0 */
132         { 69,  0xAAAA },     /* R69  - DC Servo 2 */
133         { 71,  0xAAAA },     /* R71  - DC Servo 4 */
134         { 72,  0xAAAA },     /* R72  - DC Servo 5 */
135         { 90,  0x0000 },     /* R90  - Analogue HP 0 */
136         { 94,  0x0000 },     /* R94  - Analogue Lineout 0 */
137         { 98,  0x0000 },     /* R98  - Charge Pump 0 */
138         { 104, 0x0004 },     /* R104 - Class W 0 */
139         { 108, 0x0000 },     /* R108 - Write Sequencer 0 */
140         { 109, 0x0000 },     /* R109 - Write Sequencer 1 */
141         { 110, 0x0000 },     /* R110 - Write Sequencer 2 */
142         { 111, 0x0000 },     /* R111 - Write Sequencer 3 */
143         { 112, 0x0000 },     /* R112 - Write Sequencer 4 */
144         { 116, 0x0000 },     /* R116 - FLL Control 1 */
145         { 117, 0x0007 },     /* R117 - FLL Control 2 */
146         { 118, 0x0000 },     /* R118 - FLL Control 3 */
147         { 119, 0x2EE0 },     /* R119 - FLL Control 4 */
148         { 120, 0x0004 },     /* R120 - FLL Control 5 */
149         { 121, 0x0014 },     /* R121 - GPIO Control 1 */
150         { 122, 0x0010 },     /* R122 - GPIO Control 2 */
151         { 123, 0x0010 },     /* R123 - GPIO Control 3 */
152         { 124, 0x0000 },     /* R124 - GPIO Control 4 */
153         { 126, 0x0000 },     /* R126 - Digital Pulls */
154         { 128, 0xFFFF },     /* R128 - Interrupt Status Mask */
155         { 129, 0x0000 },     /* R129 - Interrupt Polarity */
156         { 130, 0x0000 },     /* R130 - Interrupt Debounce */
157         { 134, 0x0000 },     /* R134 - EQ1 */
158         { 135, 0x000C },     /* R135 - EQ2 */
159         { 136, 0x000C },     /* R136 - EQ3 */
160         { 137, 0x000C },     /* R137 - EQ4 */
161         { 138, 0x000C },     /* R138 - EQ5 */
162         { 139, 0x000C },     /* R139 - EQ6 */
163         { 140, 0x0FCA },     /* R140 - EQ7 */
164         { 141, 0x0400 },     /* R141 - EQ8 */
165         { 142, 0x00D8 },     /* R142 - EQ9 */
166         { 143, 0x1EB5 },     /* R143 - EQ10 */
167         { 144, 0xF145 },     /* R144 - EQ11 */
168         { 145, 0x0B75 },     /* R145 - EQ12 */
169         { 146, 0x01C5 },     /* R146 - EQ13 */
170         { 147, 0x1C58 },     /* R147 - EQ14 */
171         { 148, 0xF373 },     /* R148 - EQ15 */
172         { 149, 0x0A54 },     /* R149 - EQ16 */
173         { 150, 0x0558 },     /* R150 - EQ17 */
174         { 151, 0x168E },     /* R151 - EQ18 */
175         { 152, 0xF829 },     /* R152 - EQ19 */
176         { 153, 0x07AD },     /* R153 - EQ20 */
177         { 154, 0x1103 },     /* R154 - EQ21 */
178         { 155, 0x0564 },     /* R155 - EQ22 */
179         { 156, 0x0559 },     /* R156 - EQ23 */
180         { 157, 0x4000 },     /* R157 - EQ24 */
181         { 161, 0x0000 },     /* R161 - Control Interface Test 1 */
182         { 204, 0x0000 },     /* R204 - Analogue Output Bias 0 */
183         { 247, 0x0000 },     /* R247 - FLL NCO Test 0 */
184         { 248, 0x0019 },     /* R248 - FLL NCO Test 1 */
185 };
186
187 static bool wm8904_volatile_register(struct device *dev, unsigned int reg)
188 {
189         switch (reg) {
190         case WM8904_SW_RESET_AND_ID:
191         case WM8904_REVISION:
192         case WM8904_DC_SERVO_1:
193         case WM8904_DC_SERVO_6:
194         case WM8904_DC_SERVO_7:
195         case WM8904_DC_SERVO_8:
196         case WM8904_DC_SERVO_9:
197         case WM8904_DC_SERVO_READBACK_0:
198         case WM8904_INTERRUPT_STATUS:
199                 return true;
200         default:
201                 return false;
202         }
203 }
204
205 static bool wm8904_readable_register(struct device *dev, unsigned int reg)
206 {
207         switch (reg) {
208         case WM8904_SW_RESET_AND_ID:
209         case WM8904_REVISION:
210         case WM8904_BIAS_CONTROL_0:
211         case WM8904_VMID_CONTROL_0:
212         case WM8904_MIC_BIAS_CONTROL_0:
213         case WM8904_MIC_BIAS_CONTROL_1:
214         case WM8904_ANALOGUE_DAC_0:
215         case WM8904_MIC_FILTER_CONTROL:
216         case WM8904_ANALOGUE_ADC_0:
217         case WM8904_POWER_MANAGEMENT_0:
218         case WM8904_POWER_MANAGEMENT_2:
219         case WM8904_POWER_MANAGEMENT_3:
220         case WM8904_POWER_MANAGEMENT_6:
221         case WM8904_CLOCK_RATES_0:
222         case WM8904_CLOCK_RATES_1:
223         case WM8904_CLOCK_RATES_2:
224         case WM8904_AUDIO_INTERFACE_0:
225         case WM8904_AUDIO_INTERFACE_1:
226         case WM8904_AUDIO_INTERFACE_2:
227         case WM8904_AUDIO_INTERFACE_3:
228         case WM8904_DAC_DIGITAL_VOLUME_LEFT:
229         case WM8904_DAC_DIGITAL_VOLUME_RIGHT:
230         case WM8904_DAC_DIGITAL_0:
231         case WM8904_DAC_DIGITAL_1:
232         case WM8904_ADC_DIGITAL_VOLUME_LEFT:
233         case WM8904_ADC_DIGITAL_VOLUME_RIGHT:
234         case WM8904_ADC_DIGITAL_0:
235         case WM8904_DIGITAL_MICROPHONE_0:
236         case WM8904_DRC_0:
237         case WM8904_DRC_1:
238         case WM8904_DRC_2:
239         case WM8904_DRC_3:
240         case WM8904_ANALOGUE_LEFT_INPUT_0:
241         case WM8904_ANALOGUE_RIGHT_INPUT_0:
242         case WM8904_ANALOGUE_LEFT_INPUT_1:
243         case WM8904_ANALOGUE_RIGHT_INPUT_1:
244         case WM8904_ANALOGUE_OUT1_LEFT:
245         case WM8904_ANALOGUE_OUT1_RIGHT:
246         case WM8904_ANALOGUE_OUT2_LEFT:
247         case WM8904_ANALOGUE_OUT2_RIGHT:
248         case WM8904_ANALOGUE_OUT12_ZC:
249         case WM8904_DC_SERVO_0:
250         case WM8904_DC_SERVO_1:
251         case WM8904_DC_SERVO_2:
252         case WM8904_DC_SERVO_4:
253         case WM8904_DC_SERVO_5:
254         case WM8904_DC_SERVO_6:
255         case WM8904_DC_SERVO_7:
256         case WM8904_DC_SERVO_8:
257         case WM8904_DC_SERVO_9:
258         case WM8904_DC_SERVO_READBACK_0:
259         case WM8904_ANALOGUE_HP_0:
260         case WM8904_ANALOGUE_LINEOUT_0:
261         case WM8904_CHARGE_PUMP_0:
262         case WM8904_CLASS_W_0:
263         case WM8904_WRITE_SEQUENCER_0:
264         case WM8904_WRITE_SEQUENCER_1:
265         case WM8904_WRITE_SEQUENCER_2:
266         case WM8904_WRITE_SEQUENCER_3:
267         case WM8904_WRITE_SEQUENCER_4:
268         case WM8904_FLL_CONTROL_1:
269         case WM8904_FLL_CONTROL_2:
270         case WM8904_FLL_CONTROL_3:
271         case WM8904_FLL_CONTROL_4:
272         case WM8904_FLL_CONTROL_5:
273         case WM8904_GPIO_CONTROL_1:
274         case WM8904_GPIO_CONTROL_2:
275         case WM8904_GPIO_CONTROL_3:
276         case WM8904_GPIO_CONTROL_4:
277         case WM8904_DIGITAL_PULLS:
278         case WM8904_INTERRUPT_STATUS:
279         case WM8904_INTERRUPT_STATUS_MASK:
280         case WM8904_INTERRUPT_POLARITY:
281         case WM8904_INTERRUPT_DEBOUNCE:
282         case WM8904_EQ1:
283         case WM8904_EQ2:
284         case WM8904_EQ3:
285         case WM8904_EQ4:
286         case WM8904_EQ5:
287         case WM8904_EQ6:
288         case WM8904_EQ7:
289         case WM8904_EQ8:
290         case WM8904_EQ9:
291         case WM8904_EQ10:
292         case WM8904_EQ11:
293         case WM8904_EQ12:
294         case WM8904_EQ13:
295         case WM8904_EQ14:
296         case WM8904_EQ15:
297         case WM8904_EQ16:
298         case WM8904_EQ17:
299         case WM8904_EQ18:
300         case WM8904_EQ19:
301         case WM8904_EQ20:
302         case WM8904_EQ21:
303         case WM8904_EQ22:
304         case WM8904_EQ23:
305         case WM8904_EQ24:
306         case WM8904_CONTROL_INTERFACE_TEST_1:
307         case WM8904_ADC_TEST_0:
308         case WM8904_ANALOGUE_OUTPUT_BIAS_0:
309         case WM8904_FLL_NCO_TEST_0:
310         case WM8904_FLL_NCO_TEST_1:
311                 return true;
312         default:
313                 return true;
314         }
315 }
316
317 static int wm8904_configure_clocking(struct snd_soc_codec *codec)
318 {
319         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
320         unsigned int clock0, clock2, rate;
321
322         /* Gate the clock while we're updating to avoid misclocking */
323         clock2 = snd_soc_read(codec, WM8904_CLOCK_RATES_2);
324         snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
325                             WM8904_SYSCLK_SRC, 0);
326
327         /* This should be done on init() for bypass paths */
328         switch (wm8904->sysclk_src) {
329         case WM8904_CLK_MCLK:
330                 dev_dbg(codec->dev, "Using %dHz MCLK\n", wm8904->mclk_rate);
331
332                 clock2 &= ~WM8904_SYSCLK_SRC;
333                 rate = wm8904->mclk_rate;
334
335                 /* Ensure the FLL is stopped */
336                 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
337                                     WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
338                 break;
339
340         case WM8904_CLK_FLL:
341                 dev_dbg(codec->dev, "Using %dHz FLL clock\n",
342                         wm8904->fll_fout);
343
344                 clock2 |= WM8904_SYSCLK_SRC;
345                 rate = wm8904->fll_fout;
346                 break;
347
348         default:
349                 dev_err(codec->dev, "System clock not configured\n");
350                 return -EINVAL;
351         }
352
353         /* SYSCLK shouldn't be over 13.5MHz */
354         if (rate > 13500000) {
355                 clock0 = WM8904_MCLK_DIV;
356                 wm8904->sysclk_rate = rate / 2;
357         } else {
358                 clock0 = 0;
359                 wm8904->sysclk_rate = rate;
360         }
361
362         snd_soc_update_bits(codec, WM8904_CLOCK_RATES_0, WM8904_MCLK_DIV,
363                             clock0);
364
365         snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
366                             WM8904_CLK_SYS_ENA | WM8904_SYSCLK_SRC, clock2);
367
368         dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm8904->sysclk_rate);
369
370         return 0;
371 }
372
373 static void wm8904_set_drc(struct snd_soc_codec *codec)
374 {
375         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
376         struct wm8904_pdata *pdata = wm8904->pdata;
377         int save, i;
378
379         /* Save any enables; the configuration should clear them. */
380         save = snd_soc_read(codec, WM8904_DRC_0);
381
382         for (i = 0; i < WM8904_DRC_REGS; i++)
383                 snd_soc_update_bits(codec, WM8904_DRC_0 + i, 0xffff,
384                                     pdata->drc_cfgs[wm8904->drc_cfg].regs[i]);
385
386         /* Reenable the DRC */
387         snd_soc_update_bits(codec, WM8904_DRC_0,
388                             WM8904_DRC_ENA | WM8904_DRC_DAC_PATH, save);
389 }
390
391 static int wm8904_put_drc_enum(struct snd_kcontrol *kcontrol,
392                                struct snd_ctl_elem_value *ucontrol)
393 {
394         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
395         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
396         struct wm8904_pdata *pdata = wm8904->pdata;
397         int value = ucontrol->value.integer.value[0];
398
399         if (value >= pdata->num_drc_cfgs)
400                 return -EINVAL;
401
402         wm8904->drc_cfg = value;
403
404         wm8904_set_drc(codec);
405
406         return 0;
407 }
408
409 static int wm8904_get_drc_enum(struct snd_kcontrol *kcontrol,
410                                struct snd_ctl_elem_value *ucontrol)
411 {
412         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
413         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
414
415         ucontrol->value.enumerated.item[0] = wm8904->drc_cfg;
416
417         return 0;
418 }
419
420 static void wm8904_set_retune_mobile(struct snd_soc_codec *codec)
421 {
422         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
423         struct wm8904_pdata *pdata = wm8904->pdata;
424         int best, best_val, save, i, cfg;
425
426         if (!pdata || !wm8904->num_retune_mobile_texts)
427                 return;
428
429         /* Find the version of the currently selected configuration
430          * with the nearest sample rate. */
431         cfg = wm8904->retune_mobile_cfg;
432         best = 0;
433         best_val = INT_MAX;
434         for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) {
435                 if (strcmp(pdata->retune_mobile_cfgs[i].name,
436                            wm8904->retune_mobile_texts[cfg]) == 0 &&
437                     abs(pdata->retune_mobile_cfgs[i].rate
438                         - wm8904->fs) < best_val) {
439                         best = i;
440                         best_val = abs(pdata->retune_mobile_cfgs[i].rate
441                                        - wm8904->fs);
442                 }
443         }
444
445         dev_dbg(codec->dev, "ReTune Mobile %s/%dHz for %dHz sample rate\n",
446                 pdata->retune_mobile_cfgs[best].name,
447                 pdata->retune_mobile_cfgs[best].rate,
448                 wm8904->fs);
449
450         /* The EQ will be disabled while reconfiguring it, remember the
451          * current configuration. 
452          */
453         save = snd_soc_read(codec, WM8904_EQ1);
454
455         for (i = 0; i < WM8904_EQ_REGS; i++)
456                 snd_soc_update_bits(codec, WM8904_EQ1 + i, 0xffff,
457                                 pdata->retune_mobile_cfgs[best].regs[i]);
458
459         snd_soc_update_bits(codec, WM8904_EQ1, WM8904_EQ_ENA, save);
460 }
461
462 static int wm8904_put_retune_mobile_enum(struct snd_kcontrol *kcontrol,
463                                          struct snd_ctl_elem_value *ucontrol)
464 {
465         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
466         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
467         struct wm8904_pdata *pdata = wm8904->pdata;
468         int value = ucontrol->value.integer.value[0];
469
470         if (value >= pdata->num_retune_mobile_cfgs)
471                 return -EINVAL;
472
473         wm8904->retune_mobile_cfg = value;
474
475         wm8904_set_retune_mobile(codec);
476
477         return 0;
478 }
479
480 static int wm8904_get_retune_mobile_enum(struct snd_kcontrol *kcontrol,
481                                          struct snd_ctl_elem_value *ucontrol)
482 {
483         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
484         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
485
486         ucontrol->value.enumerated.item[0] = wm8904->retune_mobile_cfg;
487
488         return 0;
489 }
490
491 static int deemph_settings[] = { 0, 32000, 44100, 48000 };
492
493 static int wm8904_set_deemph(struct snd_soc_codec *codec)
494 {
495         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
496         int val, i, best;
497
498         /* If we're using deemphasis select the nearest available sample 
499          * rate.
500          */
501         if (wm8904->deemph) {
502                 best = 1;
503                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
504                         if (abs(deemph_settings[i] - wm8904->fs) <
505                             abs(deemph_settings[best] - wm8904->fs))
506                                 best = i;
507                 }
508
509                 val = best << WM8904_DEEMPH_SHIFT;
510         } else {
511                 val = 0;
512         }
513
514         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
515
516         return snd_soc_update_bits(codec, WM8904_DAC_DIGITAL_1,
517                                    WM8904_DEEMPH_MASK, val);
518 }
519
520 static int wm8904_get_deemph(struct snd_kcontrol *kcontrol,
521                              struct snd_ctl_elem_value *ucontrol)
522 {
523         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
524         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
525
526         ucontrol->value.enumerated.item[0] = wm8904->deemph;
527         return 0;
528 }
529
530 static int wm8904_put_deemph(struct snd_kcontrol *kcontrol,
531                               struct snd_ctl_elem_value *ucontrol)
532 {
533         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
534         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
535         int deemph = ucontrol->value.enumerated.item[0];
536
537         if (deemph > 1)
538                 return -EINVAL;
539
540         wm8904->deemph = deemph;
541
542         return wm8904_set_deemph(codec);
543 }
544
545 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
546 static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
547 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
548 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
549 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
550
551 static const char *input_mode_text[] = {
552         "Single-Ended", "Differential Line", "Differential Mic"
553 };
554
555 static const struct soc_enum lin_mode =
556         SOC_ENUM_SINGLE(WM8904_ANALOGUE_LEFT_INPUT_1, 0, 3, input_mode_text);
557
558 static const struct soc_enum rin_mode =
559         SOC_ENUM_SINGLE(WM8904_ANALOGUE_RIGHT_INPUT_1, 0, 3, input_mode_text);
560
561 static const char *hpf_mode_text[] = {
562         "Hi-fi", "Voice 1", "Voice 2", "Voice 3"
563 };
564
565 static const struct soc_enum hpf_mode =
566         SOC_ENUM_SINGLE(WM8904_ADC_DIGITAL_0, 5, 4, hpf_mode_text);
567
568 static int wm8904_adc_osr_put(struct snd_kcontrol *kcontrol,
569                               struct snd_ctl_elem_value *ucontrol)
570 {
571         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
572         unsigned int val;
573         int ret;
574
575         ret = snd_soc_put_volsw(kcontrol, ucontrol);
576         if (ret < 0)
577                 return ret;
578
579         if (ucontrol->value.integer.value[0])
580                 val = 0;
581         else
582                 val = WM8904_ADC_128_OSR_TST_MODE | WM8904_ADC_BIASX1P5;
583
584         snd_soc_update_bits(codec, WM8904_ADC_TEST_0,
585                             WM8904_ADC_128_OSR_TST_MODE | WM8904_ADC_BIASX1P5,
586                             val);
587
588         return ret;
589 }
590
591 static const struct snd_kcontrol_new wm8904_adc_snd_controls[] = {
592 SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8904_ADC_DIGITAL_VOLUME_LEFT,
593                  WM8904_ADC_DIGITAL_VOLUME_RIGHT, 1, 119, 0, digital_tlv),
594
595 SOC_ENUM("Left Caputure Mode", lin_mode),
596 SOC_ENUM("Right Capture Mode", rin_mode),
597
598 /* No TLV since it depends on mode */
599 SOC_DOUBLE_R("Capture Volume", WM8904_ANALOGUE_LEFT_INPUT_0,
600              WM8904_ANALOGUE_RIGHT_INPUT_0, 0, 31, 0),
601 SOC_DOUBLE_R("Capture Switch", WM8904_ANALOGUE_LEFT_INPUT_0,
602              WM8904_ANALOGUE_RIGHT_INPUT_0, 7, 1, 1),
603
604 SOC_SINGLE("High Pass Filter Switch", WM8904_ADC_DIGITAL_0, 4, 1, 0),
605 SOC_ENUM("High Pass Filter Mode", hpf_mode),
606 SOC_SINGLE_EXT("ADC 128x OSR Switch", WM8904_ANALOGUE_ADC_0, 0, 1, 0,
607         snd_soc_get_volsw, wm8904_adc_osr_put),
608 };
609
610 static const char *drc_path_text[] = {
611         "ADC", "DAC"
612 };
613
614 static const struct soc_enum drc_path =
615         SOC_ENUM_SINGLE(WM8904_DRC_0, 14, 2, drc_path_text);
616
617 static const struct snd_kcontrol_new wm8904_dac_snd_controls[] = {
618 SOC_SINGLE_TLV("Digital Playback Boost Volume", 
619                WM8904_AUDIO_INTERFACE_0, 9, 3, 0, dac_boost_tlv),
620 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8904_DAC_DIGITAL_VOLUME_LEFT,
621                  WM8904_DAC_DIGITAL_VOLUME_RIGHT, 1, 96, 0, digital_tlv),
622
623 SOC_DOUBLE_R_TLV("Headphone Volume", WM8904_ANALOGUE_OUT1_LEFT,
624                  WM8904_ANALOGUE_OUT1_RIGHT, 0, 63, 0, out_tlv),
625 SOC_DOUBLE_R("Headphone Switch", WM8904_ANALOGUE_OUT1_LEFT,
626              WM8904_ANALOGUE_OUT1_RIGHT, 8, 1, 1),
627 SOC_DOUBLE_R("Headphone ZC Switch", WM8904_ANALOGUE_OUT1_LEFT,
628              WM8904_ANALOGUE_OUT1_RIGHT, 6, 1, 0),
629
630 SOC_DOUBLE_R_TLV("Line Output Volume", WM8904_ANALOGUE_OUT2_LEFT,
631                  WM8904_ANALOGUE_OUT2_RIGHT, 0, 63, 0, out_tlv),
632 SOC_DOUBLE_R("Line Output Switch", WM8904_ANALOGUE_OUT2_LEFT,
633              WM8904_ANALOGUE_OUT2_RIGHT, 8, 1, 1),
634 SOC_DOUBLE_R("Line Output ZC Switch", WM8904_ANALOGUE_OUT2_LEFT,
635              WM8904_ANALOGUE_OUT2_RIGHT, 6, 1, 0),
636
637 SOC_SINGLE("EQ Switch", WM8904_EQ1, 0, 1, 0),
638 SOC_SINGLE("DRC Switch", WM8904_DRC_0, 15, 1, 0),
639 SOC_ENUM("DRC Path", drc_path),
640 SOC_SINGLE("DAC OSRx2 Switch", WM8904_DAC_DIGITAL_1, 6, 1, 0),
641 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
642                     wm8904_get_deemph, wm8904_put_deemph),
643 };
644
645 static const struct snd_kcontrol_new wm8904_snd_controls[] = {
646 SOC_DOUBLE_TLV("Digital Sidetone Volume", WM8904_DAC_DIGITAL_0, 4, 8, 15, 0,
647                sidetone_tlv),
648 };
649
650 static const struct snd_kcontrol_new wm8904_eq_controls[] = {
651 SOC_SINGLE_TLV("EQ1 Volume", WM8904_EQ2, 0, 24, 0, eq_tlv),
652 SOC_SINGLE_TLV("EQ2 Volume", WM8904_EQ3, 0, 24, 0, eq_tlv),
653 SOC_SINGLE_TLV("EQ3 Volume", WM8904_EQ4, 0, 24, 0, eq_tlv),
654 SOC_SINGLE_TLV("EQ4 Volume", WM8904_EQ5, 0, 24, 0, eq_tlv),
655 SOC_SINGLE_TLV("EQ5 Volume", WM8904_EQ6, 0, 24, 0, eq_tlv),
656 };
657
658 static int cp_event(struct snd_soc_dapm_widget *w,
659                     struct snd_kcontrol *kcontrol, int event)
660 {
661         if (WARN_ON(event != SND_SOC_DAPM_POST_PMU))
662                 return -EINVAL;
663
664         /* Maximum startup time */
665         udelay(500);
666
667         return 0;
668 }
669
670 static int sysclk_event(struct snd_soc_dapm_widget *w,
671                          struct snd_kcontrol *kcontrol, int event)
672 {
673         struct snd_soc_codec *codec = w->codec;
674         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
675
676         switch (event) {
677         case SND_SOC_DAPM_PRE_PMU:
678                 /* If we're using the FLL then we only start it when
679                  * required; we assume that the configuration has been
680                  * done previously and all we need to do is kick it
681                  * off.
682                  */
683                 switch (wm8904->sysclk_src) {
684                 case WM8904_CLK_FLL:
685                         snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
686                                             WM8904_FLL_OSC_ENA,
687                                             WM8904_FLL_OSC_ENA);
688
689                         snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
690                                             WM8904_FLL_ENA,
691                                             WM8904_FLL_ENA);
692                         break;
693
694                 default:
695                         break;
696                 }
697                 break;
698
699         case SND_SOC_DAPM_POST_PMD:
700                 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
701                                     WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
702                 break;
703         }
704
705         return 0;
706 }
707
708 static int out_pga_event(struct snd_soc_dapm_widget *w,
709                          struct snd_kcontrol *kcontrol, int event)
710 {
711         struct snd_soc_codec *codec = w->codec;
712         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
713         int reg, val;
714         int dcs_mask;
715         int dcs_l, dcs_r;
716         int dcs_l_reg, dcs_r_reg;
717         int timeout;
718         int pwr_reg;
719
720         /* This code is shared between HP and LINEOUT; we do all our
721          * power management in stereo pairs to avoid latency issues so
722          * we reuse shift to identify which rather than strcmp() the
723          * name. */
724         reg = w->shift;
725
726         switch (reg) {
727         case WM8904_ANALOGUE_HP_0:
728                 pwr_reg = WM8904_POWER_MANAGEMENT_2;
729                 dcs_mask = WM8904_DCS_ENA_CHAN_0 | WM8904_DCS_ENA_CHAN_1;
730                 dcs_r_reg = WM8904_DC_SERVO_8;
731                 dcs_l_reg = WM8904_DC_SERVO_9;
732                 dcs_l = 0;
733                 dcs_r = 1;
734                 break;
735         case WM8904_ANALOGUE_LINEOUT_0:
736                 pwr_reg = WM8904_POWER_MANAGEMENT_3;
737                 dcs_mask = WM8904_DCS_ENA_CHAN_2 | WM8904_DCS_ENA_CHAN_3;
738                 dcs_r_reg = WM8904_DC_SERVO_6;
739                 dcs_l_reg = WM8904_DC_SERVO_7;
740                 dcs_l = 2;
741                 dcs_r = 3;
742                 break;
743         default:
744                 WARN(1, "Invalid reg %d\n", reg);
745                 return -EINVAL;
746         }
747
748         switch (event) {
749         case SND_SOC_DAPM_PRE_PMU:
750                 /* Power on the PGAs */
751                 snd_soc_update_bits(codec, pwr_reg,
752                                     WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA,
753                                     WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA);
754
755                 /* Power on the amplifier */
756                 snd_soc_update_bits(codec, reg,
757                                     WM8904_HPL_ENA | WM8904_HPR_ENA,
758                                     WM8904_HPL_ENA | WM8904_HPR_ENA);
759
760
761                 /* Enable the first stage */
762                 snd_soc_update_bits(codec, reg,
763                                     WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY,
764                                     WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY);
765
766                 /* Power up the DC servo */
767                 snd_soc_update_bits(codec, WM8904_DC_SERVO_0,
768                                     dcs_mask, dcs_mask);
769
770                 /* Either calibrate the DC servo or restore cached state
771                  * if we have that.
772                  */
773                 if (wm8904->dcs_state[dcs_l] || wm8904->dcs_state[dcs_r]) {
774                         dev_dbg(codec->dev, "Restoring DC servo state\n");
775
776                         snd_soc_write(codec, dcs_l_reg,
777                                       wm8904->dcs_state[dcs_l]);
778                         snd_soc_write(codec, dcs_r_reg,
779                                       wm8904->dcs_state[dcs_r]);
780
781                         snd_soc_write(codec, WM8904_DC_SERVO_1, dcs_mask);
782
783                         timeout = 20;
784                 } else {
785                         dev_dbg(codec->dev, "Calibrating DC servo\n");
786
787                         snd_soc_write(codec, WM8904_DC_SERVO_1,
788                                 dcs_mask << WM8904_DCS_TRIG_STARTUP_0_SHIFT);
789
790                         timeout = 500;
791                 }
792
793                 /* Wait for DC servo to complete */
794                 dcs_mask <<= WM8904_DCS_CAL_COMPLETE_SHIFT;
795                 do {
796                         val = snd_soc_read(codec, WM8904_DC_SERVO_READBACK_0);
797                         if ((val & dcs_mask) == dcs_mask)
798                                 break;
799
800                         msleep(1);
801                 } while (--timeout);
802
803                 if ((val & dcs_mask) != dcs_mask)
804                         dev_warn(codec->dev, "DC servo timed out\n");
805                 else
806                         dev_dbg(codec->dev, "DC servo ready\n");
807
808                 /* Enable the output stage */
809                 snd_soc_update_bits(codec, reg,
810                                     WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP,
811                                     WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP);
812                 break;
813
814         case SND_SOC_DAPM_POST_PMU:
815                 /* Unshort the output itself */
816                 snd_soc_update_bits(codec, reg,
817                                     WM8904_HPL_RMV_SHORT |
818                                     WM8904_HPR_RMV_SHORT,
819                                     WM8904_HPL_RMV_SHORT |
820                                     WM8904_HPR_RMV_SHORT);
821
822                 break;
823
824         case SND_SOC_DAPM_PRE_PMD:
825                 /* Short the output */
826                 snd_soc_update_bits(codec, reg,
827                                     WM8904_HPL_RMV_SHORT |
828                                     WM8904_HPR_RMV_SHORT, 0);
829                 break;
830
831         case SND_SOC_DAPM_POST_PMD:
832                 /* Cache the DC servo configuration; this will be
833                  * invalidated if we change the configuration. */
834                 wm8904->dcs_state[dcs_l] = snd_soc_read(codec, dcs_l_reg);
835                 wm8904->dcs_state[dcs_r] = snd_soc_read(codec, dcs_r_reg);
836
837                 snd_soc_update_bits(codec, WM8904_DC_SERVO_0,
838                                     dcs_mask, 0);
839
840                 /* Disable the amplifier input and output stages */
841                 snd_soc_update_bits(codec, reg,
842                                     WM8904_HPL_ENA | WM8904_HPR_ENA |
843                                     WM8904_HPL_ENA_DLY | WM8904_HPR_ENA_DLY |
844                                     WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP,
845                                     0);
846
847                 /* PGAs too */
848                 snd_soc_update_bits(codec, pwr_reg,
849                                     WM8904_HPL_PGA_ENA | WM8904_HPR_PGA_ENA,
850                                     0);
851                 break;
852         }
853
854         return 0;
855 }
856
857 static const char *lin_text[] = {
858         "IN1L", "IN2L", "IN3L"
859 };
860
861 static const struct soc_enum lin_enum =
862         SOC_ENUM_SINGLE(WM8904_ANALOGUE_LEFT_INPUT_1, 2, 3, lin_text);
863
864 static const struct snd_kcontrol_new lin_mux =
865         SOC_DAPM_ENUM("Left Capture Mux", lin_enum);
866
867 static const struct soc_enum lin_inv_enum =
868         SOC_ENUM_SINGLE(WM8904_ANALOGUE_LEFT_INPUT_1, 4, 3, lin_text);
869
870 static const struct snd_kcontrol_new lin_inv_mux =
871         SOC_DAPM_ENUM("Left Capture Inveting Mux", lin_inv_enum);
872
873 static const char *rin_text[] = {
874         "IN1R", "IN2R", "IN3R"
875 };
876
877 static const struct soc_enum rin_enum =
878         SOC_ENUM_SINGLE(WM8904_ANALOGUE_RIGHT_INPUT_1, 2, 3, rin_text);
879
880 static const struct snd_kcontrol_new rin_mux =
881         SOC_DAPM_ENUM("Right Capture Mux", rin_enum);
882
883 static const struct soc_enum rin_inv_enum =
884         SOC_ENUM_SINGLE(WM8904_ANALOGUE_RIGHT_INPUT_1, 4, 3, rin_text);
885
886 static const struct snd_kcontrol_new rin_inv_mux =
887         SOC_DAPM_ENUM("Right Capture Inveting Mux", rin_inv_enum);
888
889 static const char *aif_text[] = {
890         "Left", "Right"
891 };
892
893 static const struct soc_enum aifoutl_enum =
894         SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 7, 2, aif_text);
895
896 static const struct snd_kcontrol_new aifoutl_mux =
897         SOC_DAPM_ENUM("AIFOUTL Mux", aifoutl_enum);
898
899 static const struct soc_enum aifoutr_enum =
900         SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 6, 2, aif_text);
901
902 static const struct snd_kcontrol_new aifoutr_mux =
903         SOC_DAPM_ENUM("AIFOUTR Mux", aifoutr_enum);
904
905 static const struct soc_enum aifinl_enum =
906         SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 5, 2, aif_text);
907
908 static const struct snd_kcontrol_new aifinl_mux =
909         SOC_DAPM_ENUM("AIFINL Mux", aifinl_enum);
910
911 static const struct soc_enum aifinr_enum =
912         SOC_ENUM_SINGLE(WM8904_AUDIO_INTERFACE_0, 4, 2, aif_text);
913
914 static const struct snd_kcontrol_new aifinr_mux =
915         SOC_DAPM_ENUM("AIFINR Mux", aifinr_enum);
916
917 static const struct snd_soc_dapm_widget wm8904_core_dapm_widgets[] = {
918 SND_SOC_DAPM_SUPPLY("SYSCLK", WM8904_CLOCK_RATES_2, 2, 0, sysclk_event,
919                     SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
920 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8904_CLOCK_RATES_2, 1, 0, NULL, 0),
921 SND_SOC_DAPM_SUPPLY("TOCLK", WM8904_CLOCK_RATES_2, 0, 0, NULL, 0),
922 };
923
924 static const struct snd_soc_dapm_widget wm8904_adc_dapm_widgets[] = {
925 SND_SOC_DAPM_INPUT("IN1L"),
926 SND_SOC_DAPM_INPUT("IN1R"),
927 SND_SOC_DAPM_INPUT("IN2L"),
928 SND_SOC_DAPM_INPUT("IN2R"),
929 SND_SOC_DAPM_INPUT("IN3L"),
930 SND_SOC_DAPM_INPUT("IN3R"),
931
932 SND_SOC_DAPM_SUPPLY("MICBIAS", WM8904_MIC_BIAS_CONTROL_0, 0, 0, NULL, 0),
933
934 SND_SOC_DAPM_MUX("Left Capture Mux", SND_SOC_NOPM, 0, 0, &lin_mux),
935 SND_SOC_DAPM_MUX("Left Capture Inverting Mux", SND_SOC_NOPM, 0, 0,
936                  &lin_inv_mux),
937 SND_SOC_DAPM_MUX("Right Capture Mux", SND_SOC_NOPM, 0, 0, &rin_mux),
938 SND_SOC_DAPM_MUX("Right Capture Inverting Mux", SND_SOC_NOPM, 0, 0,
939                  &rin_inv_mux),
940
941 SND_SOC_DAPM_PGA("Left Capture PGA", WM8904_POWER_MANAGEMENT_0, 1, 0,
942                  NULL, 0),
943 SND_SOC_DAPM_PGA("Right Capture PGA", WM8904_POWER_MANAGEMENT_0, 0, 0,
944                  NULL, 0),
945
946 SND_SOC_DAPM_ADC("ADCL", NULL, WM8904_POWER_MANAGEMENT_6, 1, 0),
947 SND_SOC_DAPM_ADC("ADCR", NULL, WM8904_POWER_MANAGEMENT_6, 0, 0),
948
949 SND_SOC_DAPM_MUX("AIFOUTL Mux", SND_SOC_NOPM, 0, 0, &aifoutl_mux),
950 SND_SOC_DAPM_MUX("AIFOUTR Mux", SND_SOC_NOPM, 0, 0, &aifoutr_mux),
951
952 SND_SOC_DAPM_AIF_OUT("AIFOUTL", "Capture", 0, SND_SOC_NOPM, 0, 0),
953 SND_SOC_DAPM_AIF_OUT("AIFOUTR", "Capture", 1, SND_SOC_NOPM, 0, 0),
954 };
955
956 static const struct snd_soc_dapm_widget wm8904_dac_dapm_widgets[] = {
957 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
958 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
959
960 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &aifinl_mux),
961 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &aifinr_mux),
962
963 SND_SOC_DAPM_DAC("DACL", NULL, WM8904_POWER_MANAGEMENT_6, 3, 0),
964 SND_SOC_DAPM_DAC("DACR", NULL, WM8904_POWER_MANAGEMENT_6, 2, 0),
965
966 SND_SOC_DAPM_SUPPLY("Charge pump", WM8904_CHARGE_PUMP_0, 0, 0, cp_event,
967                     SND_SOC_DAPM_POST_PMU),
968
969 SND_SOC_DAPM_PGA("HPL PGA", SND_SOC_NOPM, 1, 0, NULL, 0),
970 SND_SOC_DAPM_PGA("HPR PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
971
972 SND_SOC_DAPM_PGA("LINEL PGA", SND_SOC_NOPM, 1, 0, NULL, 0),
973 SND_SOC_DAPM_PGA("LINER PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
974
975 SND_SOC_DAPM_PGA_E("Headphone Output", SND_SOC_NOPM, WM8904_ANALOGUE_HP_0,
976                    0, NULL, 0, out_pga_event,
977                    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
978                    SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
979 SND_SOC_DAPM_PGA_E("Line Output", SND_SOC_NOPM, WM8904_ANALOGUE_LINEOUT_0,
980                    0, NULL, 0, out_pga_event,
981                    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
982                    SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
983
984 SND_SOC_DAPM_OUTPUT("HPOUTL"),
985 SND_SOC_DAPM_OUTPUT("HPOUTR"),
986 SND_SOC_DAPM_OUTPUT("LINEOUTL"),
987 SND_SOC_DAPM_OUTPUT("LINEOUTR"),
988 };
989
990 static const char *out_mux_text[] = {
991         "DAC", "Bypass"
992 };
993
994 static const struct soc_enum hpl_enum =
995         SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 3, 2, out_mux_text);
996
997 static const struct snd_kcontrol_new hpl_mux =
998         SOC_DAPM_ENUM("HPL Mux", hpl_enum);
999
1000 static const struct soc_enum hpr_enum =
1001         SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 2, 2, out_mux_text);
1002
1003 static const struct snd_kcontrol_new hpr_mux =
1004         SOC_DAPM_ENUM("HPR Mux", hpr_enum);
1005
1006 static const struct soc_enum linel_enum =
1007         SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 1, 2, out_mux_text);
1008
1009 static const struct snd_kcontrol_new linel_mux =
1010         SOC_DAPM_ENUM("LINEL Mux", linel_enum);
1011
1012 static const struct soc_enum liner_enum =
1013         SOC_ENUM_SINGLE(WM8904_ANALOGUE_OUT12_ZC, 0, 2, out_mux_text);
1014
1015 static const struct snd_kcontrol_new liner_mux =
1016         SOC_DAPM_ENUM("LINER Mux", liner_enum);
1017
1018 static const char *sidetone_text[] = {
1019         "None", "Left", "Right"
1020 };
1021
1022 static const struct soc_enum dacl_sidetone_enum =
1023         SOC_ENUM_SINGLE(WM8904_DAC_DIGITAL_0, 2, 3, sidetone_text);
1024
1025 static const struct snd_kcontrol_new dacl_sidetone_mux =
1026         SOC_DAPM_ENUM("Left Sidetone Mux", dacl_sidetone_enum);
1027
1028 static const struct soc_enum dacr_sidetone_enum =
1029         SOC_ENUM_SINGLE(WM8904_DAC_DIGITAL_0, 0, 3, sidetone_text);
1030
1031 static const struct snd_kcontrol_new dacr_sidetone_mux =
1032         SOC_DAPM_ENUM("Right Sidetone Mux", dacr_sidetone_enum);
1033
1034 static const struct snd_soc_dapm_widget wm8904_dapm_widgets[] = {
1035 SND_SOC_DAPM_SUPPLY("Class G", WM8904_CLASS_W_0, 0, 1, NULL, 0),
1036 SND_SOC_DAPM_PGA("Left Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
1037 SND_SOC_DAPM_PGA("Right Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
1038
1039 SND_SOC_DAPM_MUX("Left Sidetone", SND_SOC_NOPM, 0, 0, &dacl_sidetone_mux),
1040 SND_SOC_DAPM_MUX("Right Sidetone", SND_SOC_NOPM, 0, 0, &dacr_sidetone_mux),
1041
1042 SND_SOC_DAPM_MUX("HPL Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
1043 SND_SOC_DAPM_MUX("HPR Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
1044 SND_SOC_DAPM_MUX("LINEL Mux", SND_SOC_NOPM, 0, 0, &linel_mux),
1045 SND_SOC_DAPM_MUX("LINER Mux", SND_SOC_NOPM, 0, 0, &liner_mux),
1046 };
1047
1048 static const struct snd_soc_dapm_route core_intercon[] = {
1049         { "CLK_DSP", NULL, "SYSCLK" },
1050         { "TOCLK", NULL, "SYSCLK" },
1051 };
1052
1053 static const struct snd_soc_dapm_route adc_intercon[] = {
1054         { "Left Capture Mux", "IN1L", "IN1L" },
1055         { "Left Capture Mux", "IN2L", "IN2L" },
1056         { "Left Capture Mux", "IN3L", "IN3L" },
1057
1058         { "Left Capture Inverting Mux", "IN1L", "IN1L" },
1059         { "Left Capture Inverting Mux", "IN2L", "IN2L" },
1060         { "Left Capture Inverting Mux", "IN3L", "IN3L" },
1061
1062         { "Right Capture Mux", "IN1R", "IN1R" },
1063         { "Right Capture Mux", "IN2R", "IN2R" },
1064         { "Right Capture Mux", "IN3R", "IN3R" },
1065
1066         { "Right Capture Inverting Mux", "IN1R", "IN1R" },
1067         { "Right Capture Inverting Mux", "IN2R", "IN2R" },
1068         { "Right Capture Inverting Mux", "IN3R", "IN3R" },
1069
1070         { "Left Capture PGA", NULL, "Left Capture Mux" },
1071         { "Left Capture PGA", NULL, "Left Capture Inverting Mux" },
1072
1073         { "Right Capture PGA", NULL, "Right Capture Mux" },
1074         { "Right Capture PGA", NULL, "Right Capture Inverting Mux" },
1075
1076         { "AIFOUTL", "Left",  "ADCL" },
1077         { "AIFOUTL", "Right", "ADCR" },
1078         { "AIFOUTR", "Left",  "ADCL" },
1079         { "AIFOUTR", "Right", "ADCR" },
1080
1081         { "ADCL", NULL, "CLK_DSP" },
1082         { "ADCL", NULL, "Left Capture PGA" },
1083
1084         { "ADCR", NULL, "CLK_DSP" },
1085         { "ADCR", NULL, "Right Capture PGA" },
1086 };
1087
1088 static const struct snd_soc_dapm_route dac_intercon[] = {
1089         { "DACL", "Right", "AIFINR" },
1090         { "DACL", "Left",  "AIFINL" },
1091         { "DACL", NULL, "CLK_DSP" },
1092
1093         { "DACR", "Right", "AIFINR" },
1094         { "DACR", "Left",  "AIFINL" },
1095         { "DACR", NULL, "CLK_DSP" },
1096
1097         { "Charge pump", NULL, "SYSCLK" },
1098
1099         { "Headphone Output", NULL, "HPL PGA" },
1100         { "Headphone Output", NULL, "HPR PGA" },
1101         { "Headphone Output", NULL, "Charge pump" },
1102         { "Headphone Output", NULL, "TOCLK" },
1103
1104         { "Line Output", NULL, "LINEL PGA" },
1105         { "Line Output", NULL, "LINER PGA" },
1106         { "Line Output", NULL, "Charge pump" },
1107         { "Line Output", NULL, "TOCLK" },
1108
1109         { "HPOUTL", NULL, "Headphone Output" },
1110         { "HPOUTR", NULL, "Headphone Output" },
1111
1112         { "LINEOUTL", NULL, "Line Output" },
1113         { "LINEOUTR", NULL, "Line Output" },
1114 };
1115
1116 static const struct snd_soc_dapm_route wm8904_intercon[] = {
1117         { "Left Sidetone", "Left", "ADCL" },
1118         { "Left Sidetone", "Right", "ADCR" },
1119         { "DACL", NULL, "Left Sidetone" },
1120         
1121         { "Right Sidetone", "Left", "ADCL" },
1122         { "Right Sidetone", "Right", "ADCR" },
1123         { "DACR", NULL, "Right Sidetone" },
1124
1125         { "Left Bypass", NULL, "Class G" },
1126         { "Left Bypass", NULL, "Left Capture PGA" },
1127
1128         { "Right Bypass", NULL, "Class G" },
1129         { "Right Bypass", NULL, "Right Capture PGA" },
1130
1131         { "HPL Mux", "DAC", "DACL" },
1132         { "HPL Mux", "Bypass", "Left Bypass" },
1133
1134         { "HPR Mux", "DAC", "DACR" },
1135         { "HPR Mux", "Bypass", "Right Bypass" },
1136
1137         { "LINEL Mux", "DAC", "DACL" },
1138         { "LINEL Mux", "Bypass", "Left Bypass" },
1139
1140         { "LINER Mux", "DAC", "DACR" },
1141         { "LINER Mux", "Bypass", "Right Bypass" },
1142
1143         { "HPL PGA", NULL, "HPL Mux" },
1144         { "HPR PGA", NULL, "HPR Mux" },
1145
1146         { "LINEL PGA", NULL, "LINEL Mux" },
1147         { "LINER PGA", NULL, "LINER Mux" },
1148 };
1149
1150 static const struct snd_soc_dapm_route wm8912_intercon[] = {
1151         { "HPL PGA", NULL, "DACL" },
1152         { "HPR PGA", NULL, "DACR" },
1153
1154         { "LINEL PGA", NULL, "DACL" },
1155         { "LINER PGA", NULL, "DACR" },
1156 };
1157
1158 static int wm8904_add_widgets(struct snd_soc_codec *codec)
1159 {
1160         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
1161         struct snd_soc_dapm_context *dapm = &codec->dapm;
1162
1163         snd_soc_dapm_new_controls(dapm, wm8904_core_dapm_widgets,
1164                                   ARRAY_SIZE(wm8904_core_dapm_widgets));
1165         snd_soc_dapm_add_routes(dapm, core_intercon,
1166                                 ARRAY_SIZE(core_intercon));
1167
1168         switch (wm8904->devtype) {
1169         case WM8904:
1170                 snd_soc_add_codec_controls(codec, wm8904_adc_snd_controls,
1171                                      ARRAY_SIZE(wm8904_adc_snd_controls));
1172                 snd_soc_add_codec_controls(codec, wm8904_dac_snd_controls,
1173                                      ARRAY_SIZE(wm8904_dac_snd_controls));
1174                 snd_soc_add_codec_controls(codec, wm8904_snd_controls,
1175                                      ARRAY_SIZE(wm8904_snd_controls));
1176
1177                 snd_soc_dapm_new_controls(dapm, wm8904_adc_dapm_widgets,
1178                                           ARRAY_SIZE(wm8904_adc_dapm_widgets));
1179                 snd_soc_dapm_new_controls(dapm, wm8904_dac_dapm_widgets,
1180                                           ARRAY_SIZE(wm8904_dac_dapm_widgets));
1181                 snd_soc_dapm_new_controls(dapm, wm8904_dapm_widgets,
1182                                           ARRAY_SIZE(wm8904_dapm_widgets));
1183
1184                 snd_soc_dapm_add_routes(dapm, adc_intercon,
1185                                         ARRAY_SIZE(adc_intercon));
1186                 snd_soc_dapm_add_routes(dapm, dac_intercon,
1187                                         ARRAY_SIZE(dac_intercon));
1188                 snd_soc_dapm_add_routes(dapm, wm8904_intercon,
1189                                         ARRAY_SIZE(wm8904_intercon));
1190                 break;
1191
1192         case WM8912:
1193                 snd_soc_add_codec_controls(codec, wm8904_dac_snd_controls,
1194                                      ARRAY_SIZE(wm8904_dac_snd_controls));
1195
1196                 snd_soc_dapm_new_controls(dapm, wm8904_dac_dapm_widgets,
1197                                           ARRAY_SIZE(wm8904_dac_dapm_widgets));
1198
1199                 snd_soc_dapm_add_routes(dapm, dac_intercon,
1200                                         ARRAY_SIZE(dac_intercon));
1201                 snd_soc_dapm_add_routes(dapm, wm8912_intercon,
1202                                         ARRAY_SIZE(wm8912_intercon));
1203                 break;
1204         }
1205
1206         return 0;
1207 }
1208
1209 static struct {
1210         int ratio;
1211         unsigned int clk_sys_rate;
1212 } clk_sys_rates[] = {
1213         {   64,  0 },
1214         {  128,  1 },
1215         {  192,  2 },
1216         {  256,  3 },
1217         {  384,  4 },
1218         {  512,  5 },
1219         {  786,  6 },
1220         { 1024,  7 },
1221         { 1408,  8 },
1222         { 1536,  9 },
1223 };
1224
1225 static struct {
1226         int rate;
1227         int sample_rate;
1228 } sample_rates[] = {
1229         { 8000,  0  },
1230         { 11025, 1  },
1231         { 12000, 1  },
1232         { 16000, 2  },
1233         { 22050, 3  },
1234         { 24000, 3  },
1235         { 32000, 4  },
1236         { 44100, 5  },
1237         { 48000, 5  },
1238 };
1239
1240 static struct {
1241         int div; /* *10 due to .5s */
1242         int bclk_div;
1243 } bclk_divs[] = {
1244         { 10,  0  },
1245         { 15,  1  },
1246         { 20,  2  },
1247         { 30,  3  },
1248         { 40,  4  },
1249         { 50,  5  },
1250         { 55,  6  },
1251         { 60,  7  },
1252         { 80,  8  },
1253         { 100, 9  },
1254         { 110, 10 },
1255         { 120, 11 },
1256         { 160, 12 },
1257         { 200, 13 },
1258         { 220, 14 },
1259         { 240, 16 },
1260         { 200, 17 },
1261         { 320, 18 },
1262         { 440, 19 },
1263         { 480, 20 },
1264 };
1265
1266
1267 static int wm8904_hw_params(struct snd_pcm_substream *substream,
1268                             struct snd_pcm_hw_params *params,
1269                             struct snd_soc_dai *dai)
1270 {
1271         struct snd_soc_codec *codec = dai->codec;
1272         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
1273         int ret, i, best, best_val, cur_val;
1274         unsigned int aif1 = 0;
1275         unsigned int aif2 = 0;
1276         unsigned int aif3 = 0;
1277         unsigned int clock1 = 0;
1278         unsigned int dac_digital1 = 0;
1279
1280         /* What BCLK do we need? */
1281         wm8904->fs = params_rate(params);
1282         if (wm8904->tdm_slots) {
1283                 dev_dbg(codec->dev, "Configuring for %d %d bit TDM slots\n",
1284                         wm8904->tdm_slots, wm8904->tdm_width);
1285                 wm8904->bclk = snd_soc_calc_bclk(wm8904->fs,
1286                                                  wm8904->tdm_width, 2,
1287                                                  wm8904->tdm_slots);
1288         } else {
1289                 wm8904->bclk = snd_soc_params_to_bclk(params);
1290         }
1291
1292         switch (params_format(params)) {
1293         case SNDRV_PCM_FORMAT_S16_LE:
1294                 break;
1295         case SNDRV_PCM_FORMAT_S20_3LE:
1296                 aif1 |= 0x40;
1297                 break;
1298         case SNDRV_PCM_FORMAT_S24_LE:
1299                 aif1 |= 0x80;
1300                 break;
1301         case SNDRV_PCM_FORMAT_S32_LE:
1302                 aif1 |= 0xc0;
1303                 break;
1304         default:
1305                 return -EINVAL;
1306         }
1307
1308
1309         dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm8904->bclk);
1310
1311         ret = wm8904_configure_clocking(codec);
1312         if (ret != 0)
1313                 return ret;
1314
1315         /* Select nearest CLK_SYS_RATE */
1316         best = 0;
1317         best_val = abs((wm8904->sysclk_rate / clk_sys_rates[0].ratio)
1318                        - wm8904->fs);
1319         for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1320                 cur_val = abs((wm8904->sysclk_rate /
1321                                clk_sys_rates[i].ratio) - wm8904->fs);
1322                 if (cur_val < best_val) {
1323                         best = i;
1324                         best_val = cur_val;
1325                 }
1326         }
1327         dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
1328                 clk_sys_rates[best].ratio);
1329         clock1 |= (clk_sys_rates[best].clk_sys_rate
1330                    << WM8904_CLK_SYS_RATE_SHIFT);
1331
1332         /* SAMPLE_RATE */
1333         best = 0;
1334         best_val = abs(wm8904->fs - sample_rates[0].rate);
1335         for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1336                 /* Closest match */
1337                 cur_val = abs(wm8904->fs - sample_rates[i].rate);
1338                 if (cur_val < best_val) {
1339                         best = i;
1340                         best_val = cur_val;
1341                 }
1342         }
1343         dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
1344                 sample_rates[best].rate);
1345         clock1 |= (sample_rates[best].sample_rate
1346                    << WM8904_SAMPLE_RATE_SHIFT);
1347
1348         /* Enable sloping stopband filter for low sample rates */
1349         if (wm8904->fs <= 24000)
1350                 dac_digital1 |= WM8904_DAC_SB_FILT;
1351
1352         /* BCLK_DIV */
1353         best = 0;
1354         best_val = INT_MAX;
1355         for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1356                 cur_val = ((wm8904->sysclk_rate * 10) / bclk_divs[i].div)
1357                         - wm8904->bclk;
1358                 if (cur_val < 0) /* Table is sorted */
1359                         break;
1360                 if (cur_val < best_val) {
1361                         best = i;
1362                         best_val = cur_val;
1363                 }
1364         }
1365         wm8904->bclk = (wm8904->sysclk_rate * 10) / bclk_divs[best].div;
1366         dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1367                 bclk_divs[best].div, wm8904->bclk);
1368         aif2 |= bclk_divs[best].bclk_div;
1369
1370         /* LRCLK is a simple fraction of BCLK */
1371         dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm8904->bclk / wm8904->fs);
1372         aif3 |= wm8904->bclk / wm8904->fs;
1373
1374         /* Apply the settings */
1375         snd_soc_update_bits(codec, WM8904_DAC_DIGITAL_1,
1376                             WM8904_DAC_SB_FILT, dac_digital1);
1377         snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_1,
1378                             WM8904_AIF_WL_MASK, aif1);
1379         snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_2,
1380                             WM8904_BCLK_DIV_MASK, aif2);
1381         snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_3,
1382                             WM8904_LRCLK_RATE_MASK, aif3);
1383         snd_soc_update_bits(codec, WM8904_CLOCK_RATES_1,
1384                             WM8904_SAMPLE_RATE_MASK |
1385                             WM8904_CLK_SYS_RATE_MASK, clock1);
1386
1387         /* Update filters for the new settings */
1388         wm8904_set_retune_mobile(codec);
1389         wm8904_set_deemph(codec);
1390
1391         return 0;
1392 }
1393
1394
1395 static int wm8904_set_sysclk(struct snd_soc_dai *dai, int clk_id,
1396                              unsigned int freq, int dir)
1397 {
1398         struct snd_soc_codec *codec = dai->codec;
1399         struct wm8904_priv *priv = snd_soc_codec_get_drvdata(codec);
1400
1401         switch (clk_id) {
1402         case WM8904_CLK_MCLK:
1403                 priv->sysclk_src = clk_id;
1404                 priv->mclk_rate = freq;
1405                 break;
1406
1407         case WM8904_CLK_FLL:
1408                 priv->sysclk_src = clk_id;
1409                 break;
1410
1411         default:
1412                 return -EINVAL;
1413         }
1414
1415         dev_dbg(dai->dev, "Clock source is %d at %uHz\n", clk_id, freq);
1416
1417         wm8904_configure_clocking(codec);
1418
1419         return 0;
1420 }
1421
1422 static int wm8904_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
1423 {
1424         struct snd_soc_codec *codec = dai->codec;
1425         unsigned int aif1 = 0;
1426         unsigned int aif3 = 0;
1427
1428         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1429         case SND_SOC_DAIFMT_CBS_CFS:
1430                 break;
1431         case SND_SOC_DAIFMT_CBS_CFM:
1432                 aif3 |= WM8904_LRCLK_DIR;
1433                 break;
1434         case SND_SOC_DAIFMT_CBM_CFS:
1435                 aif1 |= WM8904_BCLK_DIR;
1436                 break;
1437         case SND_SOC_DAIFMT_CBM_CFM:
1438                 aif1 |= WM8904_BCLK_DIR;
1439                 aif3 |= WM8904_LRCLK_DIR;
1440                 break;
1441         default:
1442                 return -EINVAL;
1443         }
1444
1445         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1446         case SND_SOC_DAIFMT_DSP_B:
1447                 aif1 |= 0x3 | WM8904_AIF_LRCLK_INV;
1448         case SND_SOC_DAIFMT_DSP_A:
1449                 aif1 |= 0x3;
1450                 break;
1451         case SND_SOC_DAIFMT_I2S:
1452                 aif1 |= 0x2;
1453                 break;
1454         case SND_SOC_DAIFMT_RIGHT_J:
1455                 break;
1456         case SND_SOC_DAIFMT_LEFT_J:
1457                 aif1 |= 0x1;
1458                 break;
1459         default:
1460                 return -EINVAL;
1461         }
1462
1463         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1464         case SND_SOC_DAIFMT_DSP_A:
1465         case SND_SOC_DAIFMT_DSP_B:
1466                 /* frame inversion not valid for DSP modes */
1467                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1468                 case SND_SOC_DAIFMT_NB_NF:
1469                         break;
1470                 case SND_SOC_DAIFMT_IB_NF:
1471                         aif1 |= WM8904_AIF_BCLK_INV;
1472                         break;
1473                 default:
1474                         return -EINVAL;
1475                 }
1476                 break;
1477
1478         case SND_SOC_DAIFMT_I2S:
1479         case SND_SOC_DAIFMT_RIGHT_J:
1480         case SND_SOC_DAIFMT_LEFT_J:
1481                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1482                 case SND_SOC_DAIFMT_NB_NF:
1483                         break;
1484                 case SND_SOC_DAIFMT_IB_IF:
1485                         aif1 |= WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV;
1486                         break;
1487                 case SND_SOC_DAIFMT_IB_NF:
1488                         aif1 |= WM8904_AIF_BCLK_INV;
1489                         break;
1490                 case SND_SOC_DAIFMT_NB_IF:
1491                         aif1 |= WM8904_AIF_LRCLK_INV;
1492                         break;
1493                 default:
1494                         return -EINVAL;
1495                 }
1496                 break;
1497         default:
1498                 return -EINVAL;
1499         }
1500
1501         snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_1,
1502                             WM8904_AIF_BCLK_INV | WM8904_AIF_LRCLK_INV |
1503                             WM8904_AIF_FMT_MASK | WM8904_BCLK_DIR, aif1);
1504         snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_3,
1505                             WM8904_LRCLK_DIR, aif3);
1506
1507         return 0;
1508 }
1509
1510
1511 static int wm8904_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
1512                                unsigned int rx_mask, int slots, int slot_width)
1513 {
1514         struct snd_soc_codec *codec = dai->codec;
1515         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
1516         int aif1 = 0;
1517
1518         /* Don't need to validate anything if we're turning off TDM */
1519         if (slots == 0)
1520                 goto out;
1521
1522         /* Note that we allow configurations we can't handle ourselves - 
1523          * for example, we can generate clocks for slots 2 and up even if
1524          * we can't use those slots ourselves.
1525          */
1526         aif1 |= WM8904_AIFADC_TDM | WM8904_AIFDAC_TDM;
1527
1528         switch (rx_mask) {
1529         case 3:
1530                 break;
1531         case 0xc:
1532                 aif1 |= WM8904_AIFADC_TDM_CHAN;
1533                 break;
1534         default:
1535                 return -EINVAL;
1536         }
1537
1538
1539         switch (tx_mask) {
1540         case 3:
1541                 break;
1542         case 0xc:
1543                 aif1 |= WM8904_AIFDAC_TDM_CHAN;
1544                 break;
1545         default:
1546                 return -EINVAL;
1547         }
1548
1549 out:
1550         wm8904->tdm_width = slot_width;
1551         wm8904->tdm_slots = slots / 2;
1552
1553         snd_soc_update_bits(codec, WM8904_AUDIO_INTERFACE_1,
1554                             WM8904_AIFADC_TDM | WM8904_AIFADC_TDM_CHAN |
1555                             WM8904_AIFDAC_TDM | WM8904_AIFDAC_TDM_CHAN, aif1);
1556
1557         return 0;
1558 }
1559
1560 struct _fll_div {
1561         u16 fll_fratio;
1562         u16 fll_outdiv;
1563         u16 fll_clk_ref_div;
1564         u16 n;
1565         u16 k;
1566 };
1567
1568 /* The size in bits of the FLL divide multiplied by 10
1569  * to allow rounding later */
1570 #define FIXED_FLL_SIZE ((1 << 16) * 10)
1571
1572 static struct {
1573         unsigned int min;
1574         unsigned int max;
1575         u16 fll_fratio;
1576         int ratio;
1577 } fll_fratios[] = {
1578         {       0,    64000, 4, 16 },
1579         {   64000,   128000, 3,  8 },
1580         {  128000,   256000, 2,  4 },
1581         {  256000,  1000000, 1,  2 },
1582         { 1000000, 13500000, 0,  1 },
1583 };
1584
1585 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
1586                        unsigned int Fout)
1587 {
1588         u64 Kpart;
1589         unsigned int K, Ndiv, Nmod, target;
1590         unsigned int div;
1591         int i;
1592
1593         /* Fref must be <=13.5MHz */
1594         div = 1;
1595         fll_div->fll_clk_ref_div = 0;
1596         while ((Fref / div) > 13500000) {
1597                 div *= 2;
1598                 fll_div->fll_clk_ref_div++;
1599
1600                 if (div > 8) {
1601                         pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
1602                                Fref);
1603                         return -EINVAL;
1604                 }
1605         }
1606
1607         pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
1608
1609         /* Apply the division for our remaining calculations */
1610         Fref /= div;
1611
1612         /* Fvco should be 90-100MHz; don't check the upper bound */
1613         div = 4;
1614         while (Fout * div < 90000000) {
1615                 div++;
1616                 if (div > 64) {
1617                         pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
1618                                Fout);
1619                         return -EINVAL;
1620                 }
1621         }
1622         target = Fout * div;
1623         fll_div->fll_outdiv = div - 1;
1624
1625         pr_debug("Fvco=%dHz\n", target);
1626
1627         /* Find an appropriate FLL_FRATIO and factor it out of the target */
1628         for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
1629                 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
1630                         fll_div->fll_fratio = fll_fratios[i].fll_fratio;
1631                         target /= fll_fratios[i].ratio;
1632                         break;
1633                 }
1634         }
1635         if (i == ARRAY_SIZE(fll_fratios)) {
1636                 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
1637                 return -EINVAL;
1638         }
1639
1640         /* Now, calculate N.K */
1641         Ndiv = target / Fref;
1642
1643         fll_div->n = Ndiv;
1644         Nmod = target % Fref;
1645         pr_debug("Nmod=%d\n", Nmod);
1646
1647         /* Calculate fractional part - scale up so we can round. */
1648         Kpart = FIXED_FLL_SIZE * (long long)Nmod;
1649
1650         do_div(Kpart, Fref);
1651
1652         K = Kpart & 0xFFFFFFFF;
1653
1654         if ((K % 10) >= 5)
1655                 K += 5;
1656
1657         /* Move down to proper range now rounding is done */
1658         fll_div->k = K / 10;
1659
1660         pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
1661                  fll_div->n, fll_div->k,
1662                  fll_div->fll_fratio, fll_div->fll_outdiv,
1663                  fll_div->fll_clk_ref_div);
1664
1665         return 0;
1666 }
1667
1668 static int wm8904_set_fll(struct snd_soc_dai *dai, int fll_id, int source,
1669                           unsigned int Fref, unsigned int Fout)
1670 {
1671         struct snd_soc_codec *codec = dai->codec;
1672         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
1673         struct _fll_div fll_div;
1674         int ret, val;
1675         int clock2, fll1;
1676
1677         /* Any change? */
1678         if (source == wm8904->fll_src && Fref == wm8904->fll_fref &&
1679             Fout == wm8904->fll_fout)
1680                 return 0;
1681
1682         clock2 = snd_soc_read(codec, WM8904_CLOCK_RATES_2);
1683
1684         if (Fout == 0) {
1685                 dev_dbg(codec->dev, "FLL disabled\n");
1686
1687                 wm8904->fll_fref = 0;
1688                 wm8904->fll_fout = 0;
1689
1690                 /* Gate SYSCLK to avoid glitches */
1691                 snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
1692                                     WM8904_CLK_SYS_ENA, 0);
1693
1694                 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
1695                                     WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
1696
1697                 goto out;
1698         }
1699
1700         /* Validate the FLL ID */
1701         switch (source) {
1702         case WM8904_FLL_MCLK:
1703         case WM8904_FLL_LRCLK:
1704         case WM8904_FLL_BCLK:
1705                 ret = fll_factors(&fll_div, Fref, Fout);
1706                 if (ret != 0)
1707                         return ret;
1708                 break;
1709
1710         case WM8904_FLL_FREE_RUNNING:
1711                 dev_dbg(codec->dev, "Using free running FLL\n");
1712                 /* Force 12MHz and output/4 for now */
1713                 Fout = 12000000;
1714                 Fref = 12000000;
1715
1716                 memset(&fll_div, 0, sizeof(fll_div));
1717                 fll_div.fll_outdiv = 3;
1718                 break;
1719
1720         default:
1721                 dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
1722                 return -EINVAL;
1723         }
1724
1725         /* Save current state then disable the FLL and SYSCLK to avoid
1726          * misclocking */
1727         fll1 = snd_soc_read(codec, WM8904_FLL_CONTROL_1);
1728         snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
1729                             WM8904_CLK_SYS_ENA, 0);
1730         snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
1731                             WM8904_FLL_OSC_ENA | WM8904_FLL_ENA, 0);
1732
1733         /* Unlock forced oscilator control to switch it on/off */
1734         snd_soc_update_bits(codec, WM8904_CONTROL_INTERFACE_TEST_1,
1735                             WM8904_USER_KEY, WM8904_USER_KEY);
1736
1737         if (fll_id == WM8904_FLL_FREE_RUNNING) {
1738                 val = WM8904_FLL_FRC_NCO;
1739         } else {
1740                 val = 0;
1741         }
1742
1743         snd_soc_update_bits(codec, WM8904_FLL_NCO_TEST_1, WM8904_FLL_FRC_NCO,
1744                             val);
1745         snd_soc_update_bits(codec, WM8904_CONTROL_INTERFACE_TEST_1,
1746                             WM8904_USER_KEY, 0);
1747
1748         switch (fll_id) {
1749         case WM8904_FLL_MCLK:
1750                 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
1751                                     WM8904_FLL_CLK_REF_SRC_MASK, 0);
1752                 break;
1753
1754         case WM8904_FLL_LRCLK:
1755                 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
1756                                     WM8904_FLL_CLK_REF_SRC_MASK, 1);
1757                 break;
1758
1759         case WM8904_FLL_BCLK:
1760                 snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
1761                                     WM8904_FLL_CLK_REF_SRC_MASK, 2);
1762                 break;
1763         }
1764
1765         if (fll_div.k)
1766                 val = WM8904_FLL_FRACN_ENA;
1767         else
1768                 val = 0;
1769         snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
1770                             WM8904_FLL_FRACN_ENA, val);
1771
1772         snd_soc_update_bits(codec, WM8904_FLL_CONTROL_2,
1773                             WM8904_FLL_OUTDIV_MASK | WM8904_FLL_FRATIO_MASK,
1774                             (fll_div.fll_outdiv << WM8904_FLL_OUTDIV_SHIFT) |
1775                             (fll_div.fll_fratio << WM8904_FLL_FRATIO_SHIFT));
1776
1777         snd_soc_write(codec, WM8904_FLL_CONTROL_3, fll_div.k);
1778
1779         snd_soc_update_bits(codec, WM8904_FLL_CONTROL_4, WM8904_FLL_N_MASK,
1780                             fll_div.n << WM8904_FLL_N_SHIFT);
1781
1782         snd_soc_update_bits(codec, WM8904_FLL_CONTROL_5,
1783                             WM8904_FLL_CLK_REF_DIV_MASK,
1784                             fll_div.fll_clk_ref_div 
1785                             << WM8904_FLL_CLK_REF_DIV_SHIFT);
1786
1787         dev_dbg(codec->dev, "FLL configured for %dHz->%dHz\n", Fref, Fout);
1788
1789         wm8904->fll_fref = Fref;
1790         wm8904->fll_fout = Fout;
1791         wm8904->fll_src = source;
1792
1793         /* Enable the FLL if it was previously active */
1794         snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
1795                             WM8904_FLL_OSC_ENA, fll1);
1796         snd_soc_update_bits(codec, WM8904_FLL_CONTROL_1,
1797                             WM8904_FLL_ENA, fll1);
1798
1799 out:
1800         /* Reenable SYSCLK if it was previously active */
1801         snd_soc_update_bits(codec, WM8904_CLOCK_RATES_2,
1802                             WM8904_CLK_SYS_ENA, clock2);
1803
1804         return 0;
1805 }
1806
1807 static int wm8904_digital_mute(struct snd_soc_dai *codec_dai, int mute)
1808 {
1809         struct snd_soc_codec *codec = codec_dai->codec;
1810         int val;
1811
1812         if (mute)
1813                 val = WM8904_DAC_MUTE;
1814         else
1815                 val = 0;
1816
1817         snd_soc_update_bits(codec, WM8904_DAC_DIGITAL_1, WM8904_DAC_MUTE, val);
1818
1819         return 0;
1820 }
1821
1822 static int wm8904_set_bias_level(struct snd_soc_codec *codec,
1823                                  enum snd_soc_bias_level level)
1824 {
1825         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
1826         int ret;
1827
1828         switch (level) {
1829         case SND_SOC_BIAS_ON:
1830                 break;
1831
1832         case SND_SOC_BIAS_PREPARE:
1833                 /* VMID resistance 2*50k */
1834                 snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
1835                                     WM8904_VMID_RES_MASK,
1836                                     0x1 << WM8904_VMID_RES_SHIFT);
1837
1838                 /* Normal bias current */
1839                 snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
1840                                     WM8904_ISEL_MASK, 2 << WM8904_ISEL_SHIFT);
1841                 break;
1842
1843         case SND_SOC_BIAS_STANDBY:
1844                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
1845                         ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
1846                                                     wm8904->supplies);
1847                         if (ret != 0) {
1848                                 dev_err(codec->dev,
1849                                         "Failed to enable supplies: %d\n",
1850                                         ret);
1851                                 return ret;
1852                         }
1853
1854                         regcache_cache_only(wm8904->regmap, false);
1855                         regcache_sync(wm8904->regmap);
1856
1857                         /* Enable bias */
1858                         snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
1859                                             WM8904_BIAS_ENA, WM8904_BIAS_ENA);
1860
1861                         /* Enable VMID, VMID buffering, 2*5k resistance */
1862                         snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
1863                                             WM8904_VMID_ENA |
1864                                             WM8904_VMID_RES_MASK,
1865                                             WM8904_VMID_ENA |
1866                                             0x3 << WM8904_VMID_RES_SHIFT);
1867
1868                         /* Let VMID ramp */
1869                         msleep(1);
1870                 }
1871
1872                 /* Maintain VMID with 2*250k */
1873                 snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
1874                                     WM8904_VMID_RES_MASK,
1875                                     0x2 << WM8904_VMID_RES_SHIFT);
1876
1877                 /* Bias current *0.5 */
1878                 snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
1879                                     WM8904_ISEL_MASK, 0);
1880                 break;
1881
1882         case SND_SOC_BIAS_OFF:
1883                 /* Turn off VMID */
1884                 snd_soc_update_bits(codec, WM8904_VMID_CONTROL_0,
1885                                     WM8904_VMID_RES_MASK | WM8904_VMID_ENA, 0);
1886
1887                 /* Stop bias generation */
1888                 snd_soc_update_bits(codec, WM8904_BIAS_CONTROL_0,
1889                                     WM8904_BIAS_ENA, 0);
1890
1891                 regcache_cache_only(wm8904->regmap, true);
1892                 regcache_mark_dirty(wm8904->regmap);
1893
1894                 regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies),
1895                                        wm8904->supplies);
1896                 break;
1897         }
1898         codec->dapm.bias_level = level;
1899         return 0;
1900 }
1901
1902 #define WM8904_RATES SNDRV_PCM_RATE_8000_96000
1903
1904 #define WM8904_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
1905                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
1906
1907 static const struct snd_soc_dai_ops wm8904_dai_ops = {
1908         .set_sysclk = wm8904_set_sysclk,
1909         .set_fmt = wm8904_set_fmt,
1910         .set_tdm_slot = wm8904_set_tdm_slot,
1911         .set_pll = wm8904_set_fll,
1912         .hw_params = wm8904_hw_params,
1913         .digital_mute = wm8904_digital_mute,
1914 };
1915
1916 static struct snd_soc_dai_driver wm8904_dai = {
1917         .name = "wm8904-hifi",
1918         .playback = {
1919                 .stream_name = "Playback",
1920                 .channels_min = 2,
1921                 .channels_max = 2,
1922                 .rates = WM8904_RATES,
1923                 .formats = WM8904_FORMATS,
1924         },
1925         .capture = {
1926                 .stream_name = "Capture",
1927                 .channels_min = 2,
1928                 .channels_max = 2,
1929                 .rates = WM8904_RATES,
1930                 .formats = WM8904_FORMATS,
1931         },
1932         .ops = &wm8904_dai_ops,
1933         .symmetric_rates = 1,
1934 };
1935
1936 static void wm8904_handle_retune_mobile_pdata(struct snd_soc_codec *codec)
1937 {
1938         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
1939         struct wm8904_pdata *pdata = wm8904->pdata;
1940         struct snd_kcontrol_new control =
1941                 SOC_ENUM_EXT("EQ Mode",
1942                              wm8904->retune_mobile_enum,
1943                              wm8904_get_retune_mobile_enum,
1944                              wm8904_put_retune_mobile_enum);
1945         int ret, i, j;
1946         const char **t;
1947
1948         /* We need an array of texts for the enum API but the number
1949          * of texts is likely to be less than the number of
1950          * configurations due to the sample rate dependency of the
1951          * configurations. */
1952         wm8904->num_retune_mobile_texts = 0;
1953         wm8904->retune_mobile_texts = NULL;
1954         for (i = 0; i < pdata->num_retune_mobile_cfgs; i++) {
1955                 for (j = 0; j < wm8904->num_retune_mobile_texts; j++) {
1956                         if (strcmp(pdata->retune_mobile_cfgs[i].name,
1957                                    wm8904->retune_mobile_texts[j]) == 0)
1958                                 break;
1959                 }
1960
1961                 if (j != wm8904->num_retune_mobile_texts)
1962                         continue;
1963
1964                 /* Expand the array... */
1965                 t = krealloc(wm8904->retune_mobile_texts,
1966                              sizeof(char *) * 
1967                              (wm8904->num_retune_mobile_texts + 1),
1968                              GFP_KERNEL);
1969                 if (t == NULL)
1970                         continue;
1971
1972                 /* ...store the new entry... */
1973                 t[wm8904->num_retune_mobile_texts] = 
1974                         pdata->retune_mobile_cfgs[i].name;
1975
1976                 /* ...and remember the new version. */
1977                 wm8904->num_retune_mobile_texts++;
1978                 wm8904->retune_mobile_texts = t;
1979         }
1980
1981         dev_dbg(codec->dev, "Allocated %d unique ReTune Mobile names\n",
1982                 wm8904->num_retune_mobile_texts);
1983
1984         wm8904->retune_mobile_enum.max = wm8904->num_retune_mobile_texts;
1985         wm8904->retune_mobile_enum.texts = wm8904->retune_mobile_texts;
1986
1987         ret = snd_soc_add_codec_controls(codec, &control, 1);
1988         if (ret != 0)
1989                 dev_err(codec->dev,
1990                         "Failed to add ReTune Mobile control: %d\n", ret);
1991 }
1992
1993 static void wm8904_handle_pdata(struct snd_soc_codec *codec)
1994 {
1995         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
1996         struct wm8904_pdata *pdata = wm8904->pdata;
1997         int ret, i;
1998
1999         if (!pdata) {
2000                 snd_soc_add_codec_controls(codec, wm8904_eq_controls,
2001                                      ARRAY_SIZE(wm8904_eq_controls));
2002                 return;
2003         }
2004
2005         dev_dbg(codec->dev, "%d DRC configurations\n", pdata->num_drc_cfgs);
2006
2007         if (pdata->num_drc_cfgs) {
2008                 struct snd_kcontrol_new control =
2009                         SOC_ENUM_EXT("DRC Mode", wm8904->drc_enum,
2010                                      wm8904_get_drc_enum, wm8904_put_drc_enum);
2011
2012                 /* We need an array of texts for the enum API */
2013                 wm8904->drc_texts = kmalloc(sizeof(char *)
2014                                             * pdata->num_drc_cfgs, GFP_KERNEL);
2015                 if (!wm8904->drc_texts) {
2016                         dev_err(codec->dev,
2017                                 "Failed to allocate %d DRC config texts\n",
2018                                 pdata->num_drc_cfgs);
2019                         return;
2020                 }
2021
2022                 for (i = 0; i < pdata->num_drc_cfgs; i++)
2023                         wm8904->drc_texts[i] = pdata->drc_cfgs[i].name;
2024
2025                 wm8904->drc_enum.max = pdata->num_drc_cfgs;
2026                 wm8904->drc_enum.texts = wm8904->drc_texts;
2027
2028                 ret = snd_soc_add_codec_controls(codec, &control, 1);
2029                 if (ret != 0)
2030                         dev_err(codec->dev,
2031                                 "Failed to add DRC mode control: %d\n", ret);
2032
2033                 wm8904_set_drc(codec);
2034         }
2035
2036         dev_dbg(codec->dev, "%d ReTune Mobile configurations\n",
2037                 pdata->num_retune_mobile_cfgs);
2038
2039         if (pdata->num_retune_mobile_cfgs)
2040                 wm8904_handle_retune_mobile_pdata(codec);
2041         else
2042                 snd_soc_add_codec_controls(codec, wm8904_eq_controls,
2043                                      ARRAY_SIZE(wm8904_eq_controls));
2044 }
2045
2046
2047 static int wm8904_probe(struct snd_soc_codec *codec)
2048 {
2049         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
2050         int ret;
2051
2052         codec->control_data = wm8904->regmap;
2053
2054         switch (wm8904->devtype) {
2055         case WM8904:
2056                 break;
2057         case WM8912:
2058                 memset(&wm8904_dai.capture, 0, sizeof(wm8904_dai.capture));
2059                 break;
2060         default:
2061                 dev_err(codec->dev, "Unknown device type %d\n",
2062                         wm8904->devtype);
2063                 return -EINVAL;
2064         }
2065
2066         ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_REGMAP);
2067         if (ret != 0) {
2068                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
2069                 return ret;
2070         }
2071
2072         wm8904_handle_pdata(codec);
2073
2074         wm8904_add_widgets(codec);
2075
2076         return 0;
2077 }
2078
2079 static int wm8904_remove(struct snd_soc_codec *codec)
2080 {
2081         struct wm8904_priv *wm8904 = snd_soc_codec_get_drvdata(codec);
2082
2083         kfree(wm8904->retune_mobile_texts);
2084         kfree(wm8904->drc_texts);
2085
2086         return 0;
2087 }
2088
2089 static struct snd_soc_codec_driver soc_codec_dev_wm8904 = {
2090         .probe =        wm8904_probe,
2091         .remove =       wm8904_remove,
2092         .set_bias_level = wm8904_set_bias_level,
2093         .idle_bias_off = true,
2094 };
2095
2096 static const struct regmap_config wm8904_regmap = {
2097         .reg_bits = 8,
2098         .val_bits = 16,
2099
2100         .max_register = WM8904_MAX_REGISTER,
2101         .volatile_reg = wm8904_volatile_register,
2102         .readable_reg = wm8904_readable_register,
2103
2104         .cache_type = REGCACHE_RBTREE,
2105         .reg_defaults = wm8904_reg_defaults,
2106         .num_reg_defaults = ARRAY_SIZE(wm8904_reg_defaults),
2107 };
2108
2109 static int wm8904_i2c_probe(struct i2c_client *i2c,
2110                             const struct i2c_device_id *id)
2111 {
2112         struct wm8904_priv *wm8904;
2113         unsigned int val;
2114         int ret, i;
2115
2116         wm8904 = devm_kzalloc(&i2c->dev, sizeof(struct wm8904_priv),
2117                               GFP_KERNEL);
2118         if (wm8904 == NULL)
2119                 return -ENOMEM;
2120
2121         wm8904->regmap = devm_regmap_init_i2c(i2c, &wm8904_regmap);
2122         if (IS_ERR(wm8904->regmap)) {
2123                 ret = PTR_ERR(wm8904->regmap);
2124                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
2125                         ret);
2126                 return ret;
2127         }
2128
2129         wm8904->devtype = id->driver_data;
2130         i2c_set_clientdata(i2c, wm8904);
2131         wm8904->pdata = i2c->dev.platform_data;
2132
2133         for (i = 0; i < ARRAY_SIZE(wm8904->supplies); i++)
2134                 wm8904->supplies[i].supply = wm8904_supply_names[i];
2135
2136         ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8904->supplies),
2137                                       wm8904->supplies);
2138         if (ret != 0) {
2139                 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
2140                 return ret;
2141         }
2142
2143         ret = regulator_bulk_enable(ARRAY_SIZE(wm8904->supplies),
2144                                     wm8904->supplies);
2145         if (ret != 0) {
2146                 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
2147                 return ret;
2148         }
2149
2150         ret = regmap_read(wm8904->regmap, WM8904_SW_RESET_AND_ID, &val);
2151         if (ret < 0) {
2152                 dev_err(&i2c->dev, "Failed to read ID register: %d\n", ret);
2153                 goto err_enable;
2154         }
2155         if (val != 0x8904) {
2156                 dev_err(&i2c->dev, "Device is not a WM8904, ID is %x\n", val);
2157                 ret = -EINVAL;
2158                 goto err_enable;
2159         }
2160
2161         ret = regmap_read(wm8904->regmap, WM8904_REVISION, &val);
2162         if (ret < 0) {
2163                 dev_err(&i2c->dev, "Failed to read device revision: %d\n",
2164                         ret);
2165                 goto err_enable;
2166         }
2167         dev_info(&i2c->dev, "revision %c\n", val + 'A');
2168
2169         ret = regmap_write(wm8904->regmap, WM8904_SW_RESET_AND_ID, 0);
2170         if (ret < 0) {
2171                 dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret);
2172                 goto err_enable;
2173         }
2174
2175         /* Change some default settings - latch VU and enable ZC */
2176         regmap_update_bits(wm8904->regmap, WM8904_ADC_DIGITAL_VOLUME_LEFT,
2177                            WM8904_ADC_VU, WM8904_ADC_VU);
2178         regmap_update_bits(wm8904->regmap, WM8904_ADC_DIGITAL_VOLUME_RIGHT,
2179                            WM8904_ADC_VU, WM8904_ADC_VU);
2180         regmap_update_bits(wm8904->regmap, WM8904_DAC_DIGITAL_VOLUME_LEFT,
2181                            WM8904_DAC_VU, WM8904_DAC_VU);
2182         regmap_update_bits(wm8904->regmap, WM8904_DAC_DIGITAL_VOLUME_RIGHT,
2183                            WM8904_DAC_VU, WM8904_DAC_VU);
2184         regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT1_LEFT,
2185                            WM8904_HPOUT_VU | WM8904_HPOUTLZC,
2186                            WM8904_HPOUT_VU | WM8904_HPOUTLZC);
2187         regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT1_RIGHT,
2188                            WM8904_HPOUT_VU | WM8904_HPOUTRZC,
2189                            WM8904_HPOUT_VU | WM8904_HPOUTRZC);
2190         regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT2_LEFT,
2191                            WM8904_LINEOUT_VU | WM8904_LINEOUTLZC,
2192                            WM8904_LINEOUT_VU | WM8904_LINEOUTLZC);
2193         regmap_update_bits(wm8904->regmap, WM8904_ANALOGUE_OUT2_RIGHT,
2194                            WM8904_LINEOUT_VU | WM8904_LINEOUTRZC,
2195                            WM8904_LINEOUT_VU | WM8904_LINEOUTRZC);
2196         regmap_update_bits(wm8904->regmap, WM8904_CLOCK_RATES_0,
2197                            WM8904_SR_MODE, 0);
2198
2199         /* Apply configuration from the platform data. */
2200         if (wm8904->pdata) {
2201                 for (i = 0; i < WM8904_GPIO_REGS; i++) {
2202                         if (!wm8904->pdata->gpio_cfg[i])
2203                                 continue;
2204
2205                         regmap_update_bits(wm8904->regmap,
2206                                            WM8904_GPIO_CONTROL_1 + i,
2207                                            0xffff,
2208                                            wm8904->pdata->gpio_cfg[i]);
2209                 }
2210
2211                 /* Zero is the default value for these anyway */
2212                 for (i = 0; i < WM8904_MIC_REGS; i++)
2213                         regmap_update_bits(wm8904->regmap,
2214                                            WM8904_MIC_BIAS_CONTROL_0 + i,
2215                                            0xffff,
2216                                            wm8904->pdata->mic_cfg[i]);
2217         }
2218
2219         /* Set Class W by default - this will be managed by the Class
2220          * G widget at runtime where bypass paths are available.
2221          */
2222         regmap_update_bits(wm8904->regmap, WM8904_CLASS_W_0,
2223                             WM8904_CP_DYN_PWR, WM8904_CP_DYN_PWR);
2224
2225         /* Use normal bias source */
2226         regmap_update_bits(wm8904->regmap, WM8904_BIAS_CONTROL_0,
2227                             WM8904_POBCTRL, 0);
2228
2229         /* Can leave the device powered off until we need it */
2230         regcache_cache_only(wm8904->regmap, true);
2231         regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
2232
2233         ret = snd_soc_register_codec(&i2c->dev,
2234                         &soc_codec_dev_wm8904, &wm8904_dai, 1);
2235         if (ret != 0)
2236                 return ret;
2237
2238         return 0;
2239
2240 err_enable:
2241         regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);
2242         return ret;
2243 }
2244
2245 static int wm8904_i2c_remove(struct i2c_client *client)
2246 {
2247         snd_soc_unregister_codec(&client->dev);
2248         return 0;
2249 }
2250
2251 static const struct i2c_device_id wm8904_i2c_id[] = {
2252         { "wm8904", WM8904 },
2253         { "wm8912", WM8912 },
2254         { "wm8918", WM8904 },   /* Actually a subset, updates to follow */
2255         { }
2256 };
2257 MODULE_DEVICE_TABLE(i2c, wm8904_i2c_id);
2258
2259 static struct i2c_driver wm8904_i2c_driver = {
2260         .driver = {
2261                 .name = "wm8904",
2262                 .owner = THIS_MODULE,
2263         },
2264         .probe =    wm8904_i2c_probe,
2265         .remove =   wm8904_i2c_remove,
2266         .id_table = wm8904_i2c_id,
2267 };
2268
2269 module_i2c_driver(wm8904_i2c_driver);
2270
2271 MODULE_DESCRIPTION("ASoC WM8904 driver");
2272 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
2273 MODULE_LICENSE("GPL");