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mtd: add ECC info for nand_flash_dev{}
[linux/fpc-iii.git] / sound / soc / codecs / wm8955.c
blob82c8ba9757202402cfe53e44b0a7dd587df502b5
1 /*
2 * wm8955.c -- WM8955 ALSA SoC Audio driver
3 *
4 * Copyright 2009 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/regmap.h>
20 #include <linux/regulator/consumer.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/soc.h>
26 #include <sound/initval.h>
27 #include <sound/tlv.h>
28 #include <sound/wm8955.h>
29
30 #include "wm8955.h"
31
32 #define WM8955_NUM_SUPPLIES 4
33 static const char *wm8955_supply_names[WM8955_NUM_SUPPLIES] = {
34 "DCVDD",
35 "DBVDD",
36 "HPVDD",
37 "AVDD",
38 };
39
40 /* codec private data */
41 struct wm8955_priv {
42 struct regmap *regmap;
43
44 unsigned int mclk_rate;
45
46 int deemph;
47 int fs;
48
49 struct regulator_bulk_data supplies[WM8955_NUM_SUPPLIES];
50 };
51
52 static const struct reg_default wm8955_reg_defaults[] = {
53 { 2, 0x0079 }, /* R2 - LOUT1 volume */
54 { 3, 0x0079 }, /* R3 - ROUT1 volume */
55 { 5, 0x0008 }, /* R5 - DAC Control */
56 { 7, 0x000A }, /* R7 - Audio Interface */
57 { 8, 0x0000 }, /* R8 - Sample Rate */
58 { 10, 0x00FF }, /* R10 - Left DAC volume */
59 { 11, 0x00FF }, /* R11 - Right DAC volume */
60 { 12, 0x000F }, /* R12 - Bass control */
61 { 13, 0x000F }, /* R13 - Treble control */
62 { 23, 0x00C1 }, /* R23 - Additional control (1) */
63 { 24, 0x0000 }, /* R24 - Additional control (2) */
64 { 25, 0x0000 }, /* R25 - Power Management (1) */
65 { 26, 0x0000 }, /* R26 - Power Management (2) */
66 { 27, 0x0000 }, /* R27 - Additional Control (3) */
67 { 34, 0x0050 }, /* R34 - Left out Mix (1) */
68 { 35, 0x0050 }, /* R35 - Left out Mix (2) */
69 { 36, 0x0050 }, /* R36 - Right out Mix (1) */
70 { 37, 0x0050 }, /* R37 - Right Out Mix (2) */
71 { 38, 0x0050 }, /* R38 - Mono out Mix (1) */
72 { 39, 0x0050 }, /* R39 - Mono out Mix (2) */
73 { 40, 0x0079 }, /* R40 - LOUT2 volume */
74 { 41, 0x0079 }, /* R41 - ROUT2 volume */
75 { 42, 0x0079 }, /* R42 - MONOOUT volume */
76 { 43, 0x0000 }, /* R43 - Clocking / PLL */
77 { 44, 0x0103 }, /* R44 - PLL Control 1 */
78 { 45, 0x0024 }, /* R45 - PLL Control 2 */
79 { 46, 0x01BA }, /* R46 - PLL Control 3 */
80 { 59, 0x0000 }, /* R59 - PLL Control 4 */
81 };
82
83 static bool wm8955_writeable(struct device *dev, unsigned int reg)
84 {
85 switch (reg) {
86 case WM8955_LOUT1_VOLUME:
87 case WM8955_ROUT1_VOLUME:
88 case WM8955_DAC_CONTROL:
89 case WM8955_AUDIO_INTERFACE:
90 case WM8955_SAMPLE_RATE:
91 case WM8955_LEFT_DAC_VOLUME:
92 case WM8955_RIGHT_DAC_VOLUME:
93 case WM8955_BASS_CONTROL:
94 case WM8955_TREBLE_CONTROL:
95 case WM8955_RESET:
96 case WM8955_ADDITIONAL_CONTROL_1:
97 case WM8955_ADDITIONAL_CONTROL_2:
98 case WM8955_POWER_MANAGEMENT_1:
99 case WM8955_POWER_MANAGEMENT_2:
100 case WM8955_ADDITIONAL_CONTROL_3:
101 case WM8955_LEFT_OUT_MIX_1:
102 case WM8955_LEFT_OUT_MIX_2:
103 case WM8955_RIGHT_OUT_MIX_1:
104 case WM8955_RIGHT_OUT_MIX_2:
105 case WM8955_MONO_OUT_MIX_1:
106 case WM8955_MONO_OUT_MIX_2:
107 case WM8955_LOUT2_VOLUME:
108 case WM8955_ROUT2_VOLUME:
109 case WM8955_MONOOUT_VOLUME:
110 case WM8955_CLOCKING_PLL:
111 case WM8955_PLL_CONTROL_1:
112 case WM8955_PLL_CONTROL_2:
113 case WM8955_PLL_CONTROL_3:
114 case WM8955_PLL_CONTROL_4:
115 return true;
116 default:
117 return false;
118 }
119 }
120
121 static bool wm8955_volatile(struct device *dev, unsigned int reg)
122 {
123 switch (reg) {
124 case WM8955_RESET:
125 return true;
126 default:
127 return false;
128 }
129 }
130
131 static int wm8955_reset(struct snd_soc_codec *codec)
132 {
133 return snd_soc_write(codec, WM8955_RESET, 0);
134 }
135
136 struct pll_factors {
137 int n;
138 int k;
139 int outdiv;
140 };
141
142 /* The size in bits of the FLL divide multiplied by 10
143 * to allow rounding later */
144 #define FIXED_FLL_SIZE ((1 << 22) * 10)
145
146 static int wm8995_pll_factors(struct device *dev,
147 int Fref, int Fout, struct pll_factors *pll)
148 {
149 u64 Kpart;
150 unsigned int K, Ndiv, Nmod, target;
151
152 dev_dbg(dev, "Fref=%u Fout=%u\n", Fref, Fout);
153
154 /* The oscilator should run at should be 90-100MHz, and
155 * there's a divide by 4 plus an optional divide by 2 in the
156 * output path to generate the system clock. The clock table
157 * is sortd so we should always generate a suitable target. */
158 target = Fout * 4;
159 if (target < 90000000) {
160 pll->outdiv = 1;
161 target *= 2;
162 } else {
163 pll->outdiv = 0;
164 }
165
166 WARN_ON(target < 90000000 || target > 100000000);
167
168 dev_dbg(dev, "Fvco=%dHz\n", target);
169
170 /* Now, calculate N.K */
171 Ndiv = target / Fref;
172
173 pll->n = Ndiv;
174 Nmod = target % Fref;
175 dev_dbg(dev, "Nmod=%d\n", Nmod);
176
177 /* Calculate fractional part - scale up so we can round. */
178 Kpart = FIXED_FLL_SIZE * (long long)Nmod;
179
180 do_div(Kpart, Fref);
181
182 K = Kpart & 0xFFFFFFFF;
183
184 if ((K % 10) >= 5)
185 K += 5;
186
187 /* Move down to proper range now rounding is done */
188 pll->k = K / 10;
189
190 dev_dbg(dev, "N=%x K=%x OUTDIV=%x\n", pll->n, pll->k, pll->outdiv);
191
192 return 0;
193 }
194
195 /* Lookup table specifying SRATE (table 25 in datasheet); some of the
196 * output frequencies have been rounded to the standard frequencies
197 * they are intended to match where the error is slight. */
198 static struct {
199 int mclk;
200 int fs;
201 int usb;
202 int sr;
203 } clock_cfgs[] = {
204 { 18432000, 8000, 0, 3, },
205 { 18432000, 12000, 0, 9, },
206 { 18432000, 16000, 0, 11, },
207 { 18432000, 24000, 0, 29, },
208 { 18432000, 32000, 0, 13, },
209 { 18432000, 48000, 0, 1, },
210 { 18432000, 96000, 0, 15, },
211
212 { 16934400, 8018, 0, 19, },
213 { 16934400, 11025, 0, 25, },
214 { 16934400, 22050, 0, 27, },
215 { 16934400, 44100, 0, 17, },
216 { 16934400, 88200, 0, 31, },
217
218 { 12000000, 8000, 1, 2, },
219 { 12000000, 11025, 1, 25, },
220 { 12000000, 12000, 1, 8, },
221 { 12000000, 16000, 1, 10, },
222 { 12000000, 22050, 1, 27, },
223 { 12000000, 24000, 1, 28, },
224 { 12000000, 32000, 1, 12, },
225 { 12000000, 44100, 1, 17, },
226 { 12000000, 48000, 1, 0, },
227 { 12000000, 88200, 1, 31, },
228 { 12000000, 96000, 1, 14, },
229
230 { 12288000, 8000, 0, 2, },
231 { 12288000, 12000, 0, 8, },
232 { 12288000, 16000, 0, 10, },
233 { 12288000, 24000, 0, 28, },
234 { 12288000, 32000, 0, 12, },
235 { 12288000, 48000, 0, 0, },
236 { 12288000, 96000, 0, 14, },
237
238 { 12289600, 8018, 0, 18, },
239 { 12289600, 11025, 0, 24, },
240 { 12289600, 22050, 0, 26, },
241 { 11289600, 44100, 0, 16, },
242 { 11289600, 88200, 0, 31, },
243 };
244
245 static int wm8955_configure_clocking(struct snd_soc_codec *codec)
246 {
247 struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
248 int i, ret, val;
249 int clocking = 0;
250 int srate = 0;
251 int sr = -1;
252 struct pll_factors pll;
253
254 /* If we're not running a sample rate currently just pick one */
255 if (wm8955->fs == 0)
256 wm8955->fs = 8000;
257
258 /* Can we generate an exact output? */
259 for (i = 0; i < ARRAY_SIZE(clock_cfgs); i++) {
260 if (wm8955->fs != clock_cfgs[i].fs)
261 continue;
262 sr = i;
263
264 if (wm8955->mclk_rate == clock_cfgs[i].mclk)
265 break;
266 }
267
268 /* We should never get here with an unsupported sample rate */
269 if (sr == -1) {
270 dev_err(codec->dev, "Sample rate %dHz unsupported\n",
271 wm8955->fs);
272 WARN_ON(sr == -1);
273 return -EINVAL;
274 }
275
276 if (i == ARRAY_SIZE(clock_cfgs)) {
277 /* If we can't generate the right clock from MCLK then
278 * we should configure the PLL to supply us with an
279 * appropriate clock.
280 */
281 clocking |= WM8955_MCLKSEL;
282
283 /* Use the last divider configuration we saw for the
284 * sample rate. */
285 ret = wm8995_pll_factors(codec->dev, wm8955->mclk_rate,
286 clock_cfgs[sr].mclk, &pll);
287 if (ret != 0) {
288 dev_err(codec->dev,
289 "Unable to generate %dHz from %dHz MCLK\n",
290 wm8955->fs, wm8955->mclk_rate);
291 return -EINVAL;
292 }
293
294 snd_soc_update_bits(codec, WM8955_PLL_CONTROL_1,
295 WM8955_N_MASK | WM8955_K_21_18_MASK,
296 (pll.n << WM8955_N_SHIFT) |
297 pll.k >> 18);
298 snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
299 WM8955_K_17_9_MASK,
300 (pll.k >> 9) & WM8955_K_17_9_MASK);
301 snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2,
302 WM8955_K_8_0_MASK,
303 pll.k & WM8955_K_8_0_MASK);
304 if (pll.k)
305 snd_soc_update_bits(codec, WM8955_PLL_CONTROL_4,
306 WM8955_KEN, WM8955_KEN);
307 else
308 snd_soc_update_bits(codec, WM8955_PLL_CONTROL_4,
309 WM8955_KEN, 0);
310
311 if (pll.outdiv)
312 val = WM8955_PLL_RB | WM8955_PLLOUTDIV2;
313 else
314 val = WM8955_PLL_RB;
315
316 /* Now start the PLL running */
317 snd_soc_update_bits(codec, WM8955_CLOCKING_PLL,
318 WM8955_PLL_RB | WM8955_PLLOUTDIV2, val);
319 snd_soc_update_bits(codec, WM8955_CLOCKING_PLL,
320 WM8955_PLLEN, WM8955_PLLEN);
321 }
322
323 srate = clock_cfgs[sr].usb | (clock_cfgs[sr].sr << WM8955_SR_SHIFT);
324
325 snd_soc_update_bits(codec, WM8955_SAMPLE_RATE,
326 WM8955_USB | WM8955_SR_MASK, srate);
327 snd_soc_update_bits(codec, WM8955_CLOCKING_PLL,
328 WM8955_MCLKSEL, clocking);
329
330 return 0;
331 }
332
333 static int wm8955_sysclk(struct snd_soc_dapm_widget *w,
334 struct snd_kcontrol *kcontrol, int event)
335 {
336 struct snd_soc_codec *codec = w->codec;
337 int ret = 0;
338
339 /* Always disable the clocks - if we're doing reconfiguration this
340 * avoids misclocking.
341 */
342 snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1,
343 WM8955_DIGENB, 0);
344 snd_soc_update_bits(codec, WM8955_CLOCKING_PLL,
345 WM8955_PLL_RB | WM8955_PLLEN, 0);
346
347 switch (event) {
348 case SND_SOC_DAPM_POST_PMD:
349 break;
350 case SND_SOC_DAPM_PRE_PMU:
351 ret = wm8955_configure_clocking(codec);
352 break;
353 default:
354 ret = -EINVAL;
355 break;
356 }
357
358 return ret;
359 }
360
361 static int deemph_settings[] = { 0, 32000, 44100, 48000 };
362
363 static int wm8955_set_deemph(struct snd_soc_codec *codec)
364 {
365 struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
366 int val, i, best;
367
368 /* If we're using deemphasis select the nearest available sample
369 * rate.
370 */
371 if (wm8955->deemph) {
372 best = 1;
373 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
374 if (abs(deemph_settings[i] - wm8955->fs) <
375 abs(deemph_settings[best] - wm8955->fs))
376 best = i;
377 }
378
379 val = best << WM8955_DEEMPH_SHIFT;
380 } else {
381 val = 0;
382 }
383
384 dev_dbg(codec->dev, "Set deemphasis %d\n", val);
385
386 return snd_soc_update_bits(codec, WM8955_DAC_CONTROL,
387 WM8955_DEEMPH_MASK, val);
388 }
389
390 static int wm8955_get_deemph(struct snd_kcontrol *kcontrol,
391 struct snd_ctl_elem_value *ucontrol)
392 {
393 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
394 struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
395
396 ucontrol->value.enumerated.item[0] = wm8955->deemph;
397 return 0;
398 }
399
400 static int wm8955_put_deemph(struct snd_kcontrol *kcontrol,
401 struct snd_ctl_elem_value *ucontrol)
402 {
403 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
404 struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
405 int deemph = ucontrol->value.enumerated.item[0];
406
407 if (deemph > 1)
408 return -EINVAL;
409
410 wm8955->deemph = deemph;
411
412 return wm8955_set_deemph(codec);
413 }
414
415 static const char *bass_mode_text[] = {
416 "Linear", "Adaptive",
417 };
418
419 static const struct soc_enum bass_mode =
420 SOC_ENUM_SINGLE(WM8955_BASS_CONTROL, 7, 2, bass_mode_text);
421
422 static const char *bass_cutoff_text[] = {
423 "Low", "High"
424 };
425
426 static const struct soc_enum bass_cutoff =
427 SOC_ENUM_SINGLE(WM8955_BASS_CONTROL, 6, 2, bass_cutoff_text);
428
429 static const char *treble_cutoff_text[] = {
430 "High", "Low"
431 };
432
433 static const struct soc_enum treble_cutoff =
434 SOC_ENUM_SINGLE(WM8955_TREBLE_CONTROL, 6, 2, treble_cutoff_text);
435
436 static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
437 static const DECLARE_TLV_DB_SCALE(atten_tlv, -600, 600, 0);
438 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
439 static const DECLARE_TLV_DB_SCALE(mono_tlv, -2100, 300, 0);
440 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
441 static const DECLARE_TLV_DB_SCALE(treble_tlv, -1200, 150, 1);
442
443 static const struct snd_kcontrol_new wm8955_snd_controls[] = {
444 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8955_LEFT_DAC_VOLUME,
445 WM8955_RIGHT_DAC_VOLUME, 0, 255, 0, digital_tlv),
446 SOC_SINGLE_TLV("Playback Attenuation Volume", WM8955_DAC_CONTROL, 7, 1, 1,
447 atten_tlv),
448 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
449 wm8955_get_deemph, wm8955_put_deemph),
450
451 SOC_ENUM("Bass Mode", bass_mode),
452 SOC_ENUM("Bass Cutoff", bass_cutoff),
453 SOC_SINGLE("Bass Volume", WM8955_BASS_CONTROL, 0, 15, 1),
454
455 SOC_ENUM("Treble Cutoff", treble_cutoff),
456 SOC_SINGLE_TLV("Treble Volume", WM8955_TREBLE_CONTROL, 0, 14, 1, treble_tlv),
457
458 SOC_SINGLE_TLV("Left Bypass Volume", WM8955_LEFT_OUT_MIX_1, 4, 7, 1,
459 bypass_tlv),
460 SOC_SINGLE_TLV("Left Mono Volume", WM8955_LEFT_OUT_MIX_2, 4, 7, 1,
461 bypass_tlv),
462
463 SOC_SINGLE_TLV("Right Mono Volume", WM8955_RIGHT_OUT_MIX_1, 4, 7, 1,
464 bypass_tlv),
465 SOC_SINGLE_TLV("Right Bypass Volume", WM8955_RIGHT_OUT_MIX_2, 4, 7, 1,
466 bypass_tlv),
467
468 /* Not a stereo pair so they line up with the DAPM switches */
469 SOC_SINGLE_TLV("Mono Left Bypass Volume", WM8955_MONO_OUT_MIX_1, 4, 7, 1,
470 mono_tlv),
471 SOC_SINGLE_TLV("Mono Right Bypass Volume", WM8955_MONO_OUT_MIX_2, 4, 7, 1,
472 mono_tlv),
473
474 SOC_DOUBLE_R_TLV("Headphone Volume", WM8955_LOUT1_VOLUME,
475 WM8955_ROUT1_VOLUME, 0, 127, 0, out_tlv),
476 SOC_DOUBLE_R("Headphone ZC Switch", WM8955_LOUT1_VOLUME,
477 WM8955_ROUT1_VOLUME, 7, 1, 0),
478
479 SOC_DOUBLE_R_TLV("Speaker Volume", WM8955_LOUT2_VOLUME,
480 WM8955_ROUT2_VOLUME, 0, 127, 0, out_tlv),
481 SOC_DOUBLE_R("Speaker ZC Switch", WM8955_LOUT2_VOLUME,
482 WM8955_ROUT2_VOLUME, 7, 1, 0),
483
484 SOC_SINGLE_TLV("Mono Volume", WM8955_MONOOUT_VOLUME, 0, 127, 0, out_tlv),
485 SOC_SINGLE("Mono ZC Switch", WM8955_MONOOUT_VOLUME, 7, 1, 0),
486 };
487
488 static const struct snd_kcontrol_new lmixer[] = {
489 SOC_DAPM_SINGLE("Playback Switch", WM8955_LEFT_OUT_MIX_1, 8, 1, 0),
490 SOC_DAPM_SINGLE("Bypass Switch", WM8955_LEFT_OUT_MIX_1, 7, 1, 0),
491 SOC_DAPM_SINGLE("Right Playback Switch", WM8955_LEFT_OUT_MIX_2, 8, 1, 0),
492 SOC_DAPM_SINGLE("Mono Switch", WM8955_LEFT_OUT_MIX_2, 7, 1, 0),
493 };
494
495 static const struct snd_kcontrol_new rmixer[] = {
496 SOC_DAPM_SINGLE("Left Playback Switch", WM8955_RIGHT_OUT_MIX_1, 8, 1, 0),
497 SOC_DAPM_SINGLE("Mono Switch", WM8955_RIGHT_OUT_MIX_1, 7, 1, 0),
498 SOC_DAPM_SINGLE("Playback Switch", WM8955_RIGHT_OUT_MIX_2, 8, 1, 0),
499 SOC_DAPM_SINGLE("Bypass Switch", WM8955_RIGHT_OUT_MIX_2, 7, 1, 0),
500 };
501
502 static const struct snd_kcontrol_new mmixer[] = {
503 SOC_DAPM_SINGLE("Left Playback Switch", WM8955_MONO_OUT_MIX_1, 8, 1, 0),
504 SOC_DAPM_SINGLE("Left Bypass Switch", WM8955_MONO_OUT_MIX_1, 7, 1, 0),
505 SOC_DAPM_SINGLE("Right Playback Switch", WM8955_MONO_OUT_MIX_2, 8, 1, 0),
506 SOC_DAPM_SINGLE("Right Bypass Switch", WM8955_MONO_OUT_MIX_2, 7, 1, 0),
507 };
508
509 static const struct snd_soc_dapm_widget wm8955_dapm_widgets[] = {
510 SND_SOC_DAPM_INPUT("MONOIN-"),
511 SND_SOC_DAPM_INPUT("MONOIN+"),
512 SND_SOC_DAPM_INPUT("LINEINR"),
513 SND_SOC_DAPM_INPUT("LINEINL"),
514
515 SND_SOC_DAPM_PGA("Mono Input", SND_SOC_NOPM, 0, 0, NULL, 0),
516
517 SND_SOC_DAPM_SUPPLY("SYSCLK", WM8955_POWER_MANAGEMENT_1, 0, 1, wm8955_sysclk,
518 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
519 SND_SOC_DAPM_SUPPLY("TSDEN", WM8955_ADDITIONAL_CONTROL_1, 8, 0, NULL, 0),
520
521 SND_SOC_DAPM_DAC("DACL", "Playback", WM8955_POWER_MANAGEMENT_2, 8, 0),
522 SND_SOC_DAPM_DAC("DACR", "Playback", WM8955_POWER_MANAGEMENT_2, 7, 0),
523
524 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8955_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
525 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8955_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
526 SND_SOC_DAPM_PGA("LOUT2 PGA", WM8955_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
527 SND_SOC_DAPM_PGA("ROUT2 PGA", WM8955_POWER_MANAGEMENT_2, 3, 0, NULL, 0),
528 SND_SOC_DAPM_PGA("MOUT PGA", WM8955_POWER_MANAGEMENT_2, 2, 0, NULL, 0),
529 SND_SOC_DAPM_PGA("OUT3 PGA", WM8955_POWER_MANAGEMENT_2, 1, 0, NULL, 0),
530
531 /* The names are chosen to make the control names nice */
532 SND_SOC_DAPM_MIXER("Left", SND_SOC_NOPM, 0, 0,
533 lmixer, ARRAY_SIZE(lmixer)),
534 SND_SOC_DAPM_MIXER("Right", SND_SOC_NOPM, 0, 0,
535 rmixer, ARRAY_SIZE(rmixer)),
536 SND_SOC_DAPM_MIXER("Mono", SND_SOC_NOPM, 0, 0,
537 mmixer, ARRAY_SIZE(mmixer)),
538
539 SND_SOC_DAPM_OUTPUT("LOUT1"),
540 SND_SOC_DAPM_OUTPUT("ROUT1"),
541 SND_SOC_DAPM_OUTPUT("LOUT2"),
542 SND_SOC_DAPM_OUTPUT("ROUT2"),
543 SND_SOC_DAPM_OUTPUT("MONOOUT"),
544 SND_SOC_DAPM_OUTPUT("OUT3"),
545 };
546
547 static const struct snd_soc_dapm_route wm8955_dapm_routes[] = {
548 { "DACL", NULL, "SYSCLK" },
549 { "DACR", NULL, "SYSCLK" },
550
551 { "Mono Input", NULL, "MONOIN-" },
552 { "Mono Input", NULL, "MONOIN+" },
553
554 { "Left", "Playback Switch", "DACL" },
555 { "Left", "Right Playback Switch", "DACR" },
556 { "Left", "Bypass Switch", "LINEINL" },
557 { "Left", "Mono Switch", "Mono Input" },
558
559 { "Right", "Playback Switch", "DACR" },
560 { "Right", "Left Playback Switch", "DACL" },
561 { "Right", "Bypass Switch", "LINEINR" },
562 { "Right", "Mono Switch", "Mono Input" },
563
564 { "Mono", "Left Playback Switch", "DACL" },
565 { "Mono", "Right Playback Switch", "DACR" },
566 { "Mono", "Left Bypass Switch", "LINEINL" },
567 { "Mono", "Right Bypass Switch", "LINEINR" },
568
569 { "LOUT1 PGA", NULL, "Left" },
570 { "LOUT1", NULL, "TSDEN" },
571 { "LOUT1", NULL, "LOUT1 PGA" },
572
573 { "ROUT1 PGA", NULL, "Right" },
574 { "ROUT1", NULL, "TSDEN" },
575 { "ROUT1", NULL, "ROUT1 PGA" },
576
577 { "LOUT2 PGA", NULL, "Left" },
578 { "LOUT2", NULL, "TSDEN" },
579 { "LOUT2", NULL, "LOUT2 PGA" },
580
581 { "ROUT2 PGA", NULL, "Right" },
582 { "ROUT2", NULL, "TSDEN" },
583 { "ROUT2", NULL, "ROUT2 PGA" },
584
585 { "MOUT PGA", NULL, "Mono" },
586 { "MONOOUT", NULL, "MOUT PGA" },
587
588 /* OUT3 not currently implemented */
589 { "OUT3", NULL, "OUT3 PGA" },
590 };
591
592 static int wm8955_hw_params(struct snd_pcm_substream *substream,
593 struct snd_pcm_hw_params *params,
594 struct snd_soc_dai *dai)
595 {
596 struct snd_soc_codec *codec = dai->codec;
597 struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
598 int ret;
599 int wl;
600
601 switch (params_format(params)) {
602 case SNDRV_PCM_FORMAT_S16_LE:
603 wl = 0;
604 break;
605 case SNDRV_PCM_FORMAT_S20_3LE:
606 wl = 0x4;
607 break;
608 case SNDRV_PCM_FORMAT_S24_LE:
609 wl = 0x8;
610 break;
611 case SNDRV_PCM_FORMAT_S32_LE:
612 wl = 0xc;
613 break;
614 default:
615 return -EINVAL;
616 }
617 snd_soc_update_bits(codec, WM8955_AUDIO_INTERFACE,
618 WM8955_WL_MASK, wl);
619
620 wm8955->fs = params_rate(params);
621 wm8955_set_deemph(codec);
622
623 /* If the chip is clocked then disable the clocks and force a
624 * reconfiguration, otherwise DAPM will power up the
625 * clocks for us later. */
626 ret = snd_soc_read(codec, WM8955_POWER_MANAGEMENT_1);
627 if (ret < 0)
628 return ret;
629 if (ret & WM8955_DIGENB) {
630 snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1,
631 WM8955_DIGENB, 0);
632 snd_soc_update_bits(codec, WM8955_CLOCKING_PLL,
633 WM8955_PLL_RB | WM8955_PLLEN, 0);
634
635 wm8955_configure_clocking(codec);
636 }
637
638 return 0;
639 }
640
641
642 static int wm8955_set_sysclk(struct snd_soc_dai *dai, int clk_id,
643 unsigned int freq, int dir)
644 {
645 struct snd_soc_codec *codec = dai->codec;
646 struct wm8955_priv *priv = snd_soc_codec_get_drvdata(codec);
647 int div;
648
649 switch (clk_id) {
650 case WM8955_CLK_MCLK:
651 if (freq > 15000000) {
652 priv->mclk_rate = freq /= 2;
653 div = WM8955_MCLKDIV2;
654 } else {
655 priv->mclk_rate = freq;
656 div = 0;
657 }
658
659 snd_soc_update_bits(codec, WM8955_SAMPLE_RATE,
660 WM8955_MCLKDIV2, div);
661 break;
662
663 default:
664 return -EINVAL;
665 }
666
667 dev_dbg(dai->dev, "Clock source is %d at %uHz\n", clk_id, freq);
668
669 return 0;
670 }
671
672 static int wm8955_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
673 {
674 struct snd_soc_codec *codec = dai->codec;
675 u16 aif = 0;
676
677 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
678 case SND_SOC_DAIFMT_CBS_CFS:
679 break;
680 case SND_SOC_DAIFMT_CBM_CFM:
681 aif |= WM8955_MS;
682 break;
683 default:
684 return -EINVAL;
685 }
686
687 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
688 case SND_SOC_DAIFMT_DSP_B:
689 aif |= WM8955_LRP;
690 case SND_SOC_DAIFMT_DSP_A:
691 aif |= 0x3;
692 break;
693 case SND_SOC_DAIFMT_I2S:
694 aif |= 0x2;
695 break;
696 case SND_SOC_DAIFMT_RIGHT_J:
697 break;
698 case SND_SOC_DAIFMT_LEFT_J:
699 aif |= 0x1;
700 break;
701 default:
702 return -EINVAL;
703 }
704
705 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
706 case SND_SOC_DAIFMT_DSP_A:
707 case SND_SOC_DAIFMT_DSP_B:
708 /* frame inversion not valid for DSP modes */
709 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
710 case SND_SOC_DAIFMT_NB_NF:
711 break;
712 case SND_SOC_DAIFMT_IB_NF:
713 aif |= WM8955_BCLKINV;
714 break;
715 default:
716 return -EINVAL;
717 }
718 break;
719
720 case SND_SOC_DAIFMT_I2S:
721 case SND_SOC_DAIFMT_RIGHT_J:
722 case SND_SOC_DAIFMT_LEFT_J:
723 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
724 case SND_SOC_DAIFMT_NB_NF:
725 break;
726 case SND_SOC_DAIFMT_IB_IF:
727 aif |= WM8955_BCLKINV | WM8955_LRP;
728 break;
729 case SND_SOC_DAIFMT_IB_NF:
730 aif |= WM8955_BCLKINV;
731 break;
732 case SND_SOC_DAIFMT_NB_IF:
733 aif |= WM8955_LRP;
734 break;
735 default:
736 return -EINVAL;
737 }
738 break;
739 default:
740 return -EINVAL;
741 }
742
743 snd_soc_update_bits(codec, WM8955_AUDIO_INTERFACE,
744 WM8955_MS | WM8955_FORMAT_MASK | WM8955_BCLKINV |
745 WM8955_LRP, aif);
746
747 return 0;
748 }
749
750
751 static int wm8955_digital_mute(struct snd_soc_dai *codec_dai, int mute)
752 {
753 struct snd_soc_codec *codec = codec_dai->codec;
754 int val;
755
756 if (mute)
757 val = WM8955_DACMU;
758 else
759 val = 0;
760
761 snd_soc_update_bits(codec, WM8955_DAC_CONTROL, WM8955_DACMU, val);
762
763 return 0;
764 }
765
766 static int wm8955_set_bias_level(struct snd_soc_codec *codec,
767 enum snd_soc_bias_level level)
768 {
769 struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
770 int ret;
771
772 switch (level) {
773 case SND_SOC_BIAS_ON:
774 break;
775
776 case SND_SOC_BIAS_PREPARE:
777 /* VMID resistance 2*50k */
778 snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1,
779 WM8955_VMIDSEL_MASK,
780 0x1 << WM8955_VMIDSEL_SHIFT);
781
782 /* Default bias current */
783 snd_soc_update_bits(codec, WM8955_ADDITIONAL_CONTROL_1,
784 WM8955_VSEL_MASK,
785 0x2 << WM8955_VSEL_SHIFT);
786 break;
787
788 case SND_SOC_BIAS_STANDBY:
789 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
790 ret = regulator_bulk_enable(ARRAY_SIZE(wm8955->supplies),
791 wm8955->supplies);
792 if (ret != 0) {
793 dev_err(codec->dev,
794 "Failed to enable supplies: %d\n",
795 ret);
796 return ret;
797 }
798
799 regcache_sync(wm8955->regmap);
800
801 /* Enable VREF and VMID */
802 snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1,
803 WM8955_VREF |
804 WM8955_VMIDSEL_MASK,
805 WM8955_VREF |
806 0x3 << WM8955_VREF_SHIFT);
807
808 /* Let VMID ramp */
809 msleep(500);
810
811 /* High resistance VROI to maintain outputs */
812 snd_soc_update_bits(codec,
813 WM8955_ADDITIONAL_CONTROL_3,
814 WM8955_VROI, WM8955_VROI);
815 }
816
817 /* Maintain VMID with 2*250k */
818 snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1,
819 WM8955_VMIDSEL_MASK,
820 0x2 << WM8955_VMIDSEL_SHIFT);
821
822 /* Minimum bias current */
823 snd_soc_update_bits(codec, WM8955_ADDITIONAL_CONTROL_1,
824 WM8955_VSEL_MASK, 0);
825 break;
826
827 case SND_SOC_BIAS_OFF:
828 /* Low resistance VROI to help discharge */
829 snd_soc_update_bits(codec,
830 WM8955_ADDITIONAL_CONTROL_3,
831 WM8955_VROI, 0);
832
833 /* Turn off VMID and VREF */
834 snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1,
835 WM8955_VREF |
836 WM8955_VMIDSEL_MASK, 0);
837
838 regulator_bulk_disable(ARRAY_SIZE(wm8955->supplies),
839 wm8955->supplies);
840 break;
841 }
842 codec->dapm.bias_level = level;
843 return 0;
844 }
845
846 #define WM8955_RATES SNDRV_PCM_RATE_8000_96000
847
848 #define WM8955_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
849 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
850
851 static const struct snd_soc_dai_ops wm8955_dai_ops = {
852 .set_sysclk = wm8955_set_sysclk,
853 .set_fmt = wm8955_set_fmt,
854 .hw_params = wm8955_hw_params,
855 .digital_mute = wm8955_digital_mute,
856 };
857
858 static struct snd_soc_dai_driver wm8955_dai = {
859 .name = "wm8955-hifi",
860 .playback = {
861 .stream_name = "Playback",
862 .channels_min = 2,
863 .channels_max = 2,
864 .rates = WM8955_RATES,
865 .formats = WM8955_FORMATS,
866 },
867 .ops = &wm8955_dai_ops,
868 };
869
870 #ifdef CONFIG_PM
871 static int wm8955_suspend(struct snd_soc_codec *codec)
872 {
873 struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
874
875 wm8955_set_bias_level(codec, SND_SOC_BIAS_OFF);
876
877 regcache_mark_dirty(wm8955->regmap);
878
879 return 0;
880 }
881
882 static int wm8955_resume(struct snd_soc_codec *codec)
883 {
884 wm8955_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
885
886 return 0;
887 }
888 #else
889 #define wm8955_suspend NULL
890 #define wm8955_resume NULL
891 #endif
892
893 static int wm8955_probe(struct snd_soc_codec *codec)
894 {
895 struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
896 struct wm8955_pdata *pdata = dev_get_platdata(codec->dev);
897 int ret, i;
898
899 codec->control_data = wm8955->regmap;
900
901 ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
902 if (ret != 0) {
903 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
904 return ret;
905 }
906
907 for (i = 0; i < ARRAY_SIZE(wm8955->supplies); i++)
908 wm8955->supplies[i].supply = wm8955_supply_names[i];
909
910 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8955->supplies),
911 wm8955->supplies);
912 if (ret != 0) {
913 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
914 return ret;
915 }
916
917 ret = regulator_bulk_enable(ARRAY_SIZE(wm8955->supplies),
918 wm8955->supplies);
919 if (ret != 0) {
920 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
921 goto err_get;
922 }
923
924 ret = wm8955_reset(codec);
925 if (ret < 0) {
926 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
927 goto err_enable;
928 }
929
930 /* Change some default settings - latch VU and enable ZC */
931 snd_soc_update_bits(codec, WM8955_LEFT_DAC_VOLUME,
932 WM8955_LDVU, WM8955_LDVU);
933 snd_soc_update_bits(codec, WM8955_RIGHT_DAC_VOLUME,
934 WM8955_RDVU, WM8955_RDVU);
935 snd_soc_update_bits(codec, WM8955_LOUT1_VOLUME,
936 WM8955_LO1VU | WM8955_LO1ZC,
937 WM8955_LO1VU | WM8955_LO1ZC);
938 snd_soc_update_bits(codec, WM8955_ROUT1_VOLUME,
939 WM8955_RO1VU | WM8955_RO1ZC,
940 WM8955_RO1VU | WM8955_RO1ZC);
941 snd_soc_update_bits(codec, WM8955_LOUT2_VOLUME,
942 WM8955_LO2VU | WM8955_LO2ZC,
943 WM8955_LO2VU | WM8955_LO2ZC);
944 snd_soc_update_bits(codec, WM8955_ROUT2_VOLUME,
945 WM8955_RO2VU | WM8955_RO2ZC,
946 WM8955_RO2VU | WM8955_RO2ZC);
947 snd_soc_update_bits(codec, WM8955_MONOOUT_VOLUME,
948 WM8955_MOZC, WM8955_MOZC);
949
950 /* Also enable adaptive bass boost by default */
951 snd_soc_update_bits(codec, WM8955_BASS_CONTROL, WM8955_BB, WM8955_BB);
952
953 /* Set platform data values */
954 if (pdata) {
955 if (pdata->out2_speaker)
956 snd_soc_update_bits(codec, WM8955_ADDITIONAL_CONTROL_2,
957 WM8955_ROUT2INV, WM8955_ROUT2INV);
958
959 if (pdata->monoin_diff)
960 snd_soc_update_bits(codec, WM8955_MONO_OUT_MIX_1,
961 WM8955_DMEN, WM8955_DMEN);
962 }
963
964 wm8955_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
965
966 /* Bias level configuration will have done an extra enable */
967 regulator_bulk_disable(ARRAY_SIZE(wm8955->supplies), wm8955->supplies);
968
969 return 0;
970
971 err_enable:
972 regulator_bulk_disable(ARRAY_SIZE(wm8955->supplies), wm8955->supplies);
973 err_get:
974 regulator_bulk_free(ARRAY_SIZE(wm8955->supplies), wm8955->supplies);
975 return ret;
976 }
977
978 static int wm8955_remove(struct snd_soc_codec *codec)
979 {
980 struct wm8955_priv *wm8955 = snd_soc_codec_get_drvdata(codec);
981
982 wm8955_set_bias_level(codec, SND_SOC_BIAS_OFF);
983 regulator_bulk_free(ARRAY_SIZE(wm8955->supplies), wm8955->supplies);
984 return 0;
985 }
986
987 static struct snd_soc_codec_driver soc_codec_dev_wm8955 = {
988 .probe = wm8955_probe,
989 .remove = wm8955_remove,
990 .suspend = wm8955_suspend,
991 .resume = wm8955_resume,
992 .set_bias_level = wm8955_set_bias_level,
993
994 .controls = wm8955_snd_controls,
995 .num_controls = ARRAY_SIZE(wm8955_snd_controls),
996 .dapm_widgets = wm8955_dapm_widgets,
997 .num_dapm_widgets = ARRAY_SIZE(wm8955_dapm_widgets),
998 .dapm_routes = wm8955_dapm_routes,
999 .num_dapm_routes = ARRAY_SIZE(wm8955_dapm_routes),
1000 };
1001
1002 static const struct regmap_config wm8955_regmap = {
1003 .reg_bits = 7,
1004 .val_bits = 9,
1005
1006 .max_register = WM8955_MAX_REGISTER,
1007 .volatile_reg = wm8955_volatile,
1008 .writeable_reg = wm8955_writeable,
1009
1010 .cache_type = REGCACHE_RBTREE,
1011 .reg_defaults = wm8955_reg_defaults,
1012 .num_reg_defaults = ARRAY_SIZE(wm8955_reg_defaults),
1013 };
1014
1015 static int wm8955_i2c_probe(struct i2c_client *i2c,
1016 const struct i2c_device_id *id)
1017 {
1018 struct wm8955_priv *wm8955;
1019 int ret;
1020
1021 wm8955 = devm_kzalloc(&i2c->dev, sizeof(struct wm8955_priv),
1022 GFP_KERNEL);
1023 if (wm8955 == NULL)
1024 return -ENOMEM;
1025
1026 wm8955->regmap = devm_regmap_init_i2c(i2c, &wm8955_regmap);
1027 if (IS_ERR(wm8955->regmap)) {
1028 ret = PTR_ERR(wm8955->regmap);
1029 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
1030 ret);
1031 return ret;
1032 }
1033
1034 i2c_set_clientdata(i2c, wm8955);
1035
1036 ret = snd_soc_register_codec(&i2c->dev,
1037 &soc_codec_dev_wm8955, &wm8955_dai, 1);
1038
1039 return ret;
1040 }
1041
1042 static int wm8955_i2c_remove(struct i2c_client *client)
1043 {
1044 snd_soc_unregister_codec(&client->dev);
1045
1046 return 0;
1047 }
1048
1049 static const struct i2c_device_id wm8955_i2c_id[] = {
1050 { "wm8955", 0 },
1051 { }
1052 };
1053 MODULE_DEVICE_TABLE(i2c, wm8955_i2c_id);
1054
1055 static struct i2c_driver wm8955_i2c_driver = {
1056 .driver = {
1057 .name = "wm8955",
1058 .owner = THIS_MODULE,
1059 },
1060 .probe = wm8955_i2c_probe,
1061 .remove = wm8955_i2c_remove,
1062 .id_table = wm8955_i2c_id,
1063 };
1064
1065 module_i2c_driver(wm8955_i2c_driver);
1066
1067 MODULE_DESCRIPTION("ASoC WM8955 driver");
1068 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1069 MODULE_LICENSE("GPL");
Linux with added FPC-III support