1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * wm8955.c -- WM8955 ALSA SoC Audio driver
4 *
5 * Copyright 2009 Wolfson Microelectronics plc
6 *
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 */
9
10 #include <linux/module.h>
11 #include <linux/moduleparam.h>
12 #include <linux/init.h>
13 #include <linux/delay.h>
14 #include <linux/pm.h>
15 #include <linux/i2c.h>
16 #include <linux/regmap.h>
17 #include <linux/regulator/consumer.h>
18 #include <linux/slab.h>
19 #include <sound/core.h>
20 #include <sound/pcm.h>
21 #include <sound/pcm_params.h>
22 #include <sound/soc.h>
23 #include <sound/initval.h>
24 #include <sound/tlv.h>
25 #include <sound/wm8955.h>
26
27 #include "wm8955.h"
28
29 #define WM8955_NUM_SUPPLIES 4
30 static const char *wm8955_supply_names[WM8955_NUM_SUPPLIES] = {
31 "DCVDD",
32 "DBVDD",
33 "HPVDD",
34 "AVDD",
35 };
36
37 /* codec private data */
38 struct wm8955_priv {
39 struct regmap *regmap;
40
41 unsigned int mclk_rate;
42
43 int deemph;
44 int fs;
45
46 struct regulator_bulk_data supplies[WM8955_NUM_SUPPLIES];
47 };
48
49 static const struct reg_default wm8955_reg_defaults[] = {
50 { 2, 0x0079 }, /* R2 - LOUT1 volume */
51 { 3, 0x0079 }, /* R3 - ROUT1 volume */
52 { 5, 0x0008 }, /* R5 - DAC Control */
53 { 7, 0x000A }, /* R7 - Audio Interface */
54 { 8, 0x0000 }, /* R8 - Sample Rate */
55 { 10, 0x00FF }, /* R10 - Left DAC volume */
56 { 11, 0x00FF }, /* R11 - Right DAC volume */
57 { 12, 0x000F }, /* R12 - Bass control */
58 { 13, 0x000F }, /* R13 - Treble control */
59 { 23, 0x00C1 }, /* R23 - Additional control (1) */
60 { 24, 0x0000 }, /* R24 - Additional control (2) */
61 { 25, 0x0000 }, /* R25 - Power Management (1) */
62 { 26, 0x0000 }, /* R26 - Power Management (2) */
63 { 27, 0x0000 }, /* R27 - Additional Control (3) */
64 { 34, 0x0050 }, /* R34 - Left out Mix (1) */
65 { 35, 0x0050 }, /* R35 - Left out Mix (2) */
66 { 36, 0x0050 }, /* R36 - Right out Mix (1) */
67 { 37, 0x0050 }, /* R37 - Right Out Mix (2) */
68 { 38, 0x0050 }, /* R38 - Mono out Mix (1) */
69 { 39, 0x0050 }, /* R39 - Mono out Mix (2) */
70 { 40, 0x0079 }, /* R40 - LOUT2 volume */
71 { 41, 0x0079 }, /* R41 - ROUT2 volume */
72 { 42, 0x0079 }, /* R42 - MONOOUT volume */
73 { 43, 0x0000 }, /* R43 - Clocking / PLL */
74 { 44, 0x0103 }, /* R44 - PLL Control 1 */
75 { 45, 0x0024 }, /* R45 - PLL Control 2 */
76 { 46, 0x01BA }, /* R46 - PLL Control 3 */
77 { 59, 0x0000 }, /* R59 - PLL Control 4 */
78 };
79
80 static bool wm8955_writeable(struct device *dev, unsigned int reg)
81 {
82 switch (reg) {
83 case WM8955_LOUT1_VOLUME:
84 case WM8955_ROUT1_VOLUME:
85 case WM8955_DAC_CONTROL:
86 case WM8955_AUDIO_INTERFACE:
87 case WM8955_SAMPLE_RATE:
88 case WM8955_LEFT_DAC_VOLUME:
89 case WM8955_RIGHT_DAC_VOLUME:
90 case WM8955_BASS_CONTROL:
91 case WM8955_TREBLE_CONTROL:
92 case WM8955_RESET:
93 case WM8955_ADDITIONAL_CONTROL_1:
94 case WM8955_ADDITIONAL_CONTROL_2:
95 case WM8955_POWER_MANAGEMENT_1:
96 case WM8955_POWER_MANAGEMENT_2:
97 case WM8955_ADDITIONAL_CONTROL_3:
98 case WM8955_LEFT_OUT_MIX_1:
99 case WM8955_LEFT_OUT_MIX_2:
100 case WM8955_RIGHT_OUT_MIX_1:
101 case WM8955_RIGHT_OUT_MIX_2:
102 case WM8955_MONO_OUT_MIX_1:
103 case WM8955_MONO_OUT_MIX_2:
104 case WM8955_LOUT2_VOLUME:
105 case WM8955_ROUT2_VOLUME:
106 case WM8955_MONOOUT_VOLUME:
107 case WM8955_CLOCKING_PLL:
108 case WM8955_PLL_CONTROL_1:
109 case WM8955_PLL_CONTROL_2:
110 case WM8955_PLL_CONTROL_3:
111 case WM8955_PLL_CONTROL_4:
112 return true;
113 default:
114 return false;
115 }
116 }
117
118 static bool wm8955_volatile(struct device *dev, unsigned int reg)
119 {
120 switch (reg) {
121 case WM8955_RESET:
122 return true;
123 default:
124 return false;
125 }
126 }
127
128 static int wm8955_reset(struct snd_soc_component *component)
129 {
130 return snd_soc_component_write(component, WM8955_RESET, 0);
131 }
132
133 struct pll_factors {
134 int n;
135 int k;
136 int outdiv;
137 };
138
139 /* The size in bits of the FLL divide multiplied by 10
140 * to allow rounding later */
141 #define FIXED_FLL_SIZE ((1 << 22) * 10)
142
143 static int wm8955_pll_factors(struct device *dev,
144 int Fref, int Fout, struct pll_factors *pll)
145 {
146 u64 Kpart;
147 unsigned int K, Ndiv, Nmod, target;
148
149 dev_dbg(dev, "Fref=%u Fout=%u\n", Fref, Fout);
150
151 /* The oscilator should run at should be 90-100MHz, and
152 * there's a divide by 4 plus an optional divide by 2 in the
153 * output path to generate the system clock. The clock table
154 * is sortd so we should always generate a suitable target. */
155 target = Fout * 4;
156 if (target < 90000000) {
157 pll->outdiv = 1;
158 target *= 2;
159 } else {
160 pll->outdiv = 0;
161 }
162
163 WARN_ON(target < 90000000 || target > 100000000);
164
165 dev_dbg(dev, "Fvco=%dHz\n", target);
166
167 /* Now, calculate N.K */
168 Ndiv = target / Fref;
169
170 pll->n = Ndiv;
171 Nmod = target % Fref;
172 dev_dbg(dev, "Nmod=%d\n", Nmod);
173
174 /* Calculate fractional part - scale up so we can round. */
175 Kpart = FIXED_FLL_SIZE * (long long)Nmod;
176
177 do_div(Kpart, Fref);
178
179 K = Kpart & 0xFFFFFFFF;
180
181 if ((K % 10) >= 5)
182 K += 5;
183
184 /* Move down to proper range now rounding is done */
185 pll->k = K / 10;
186
187 dev_dbg(dev, "N=%x K=%x OUTDIV=%x\n", pll->n, pll->k, pll->outdiv);
188
189 return 0;
190 }
191
192 /* Lookup table specifying SRATE (table 25 in datasheet); some of the
193 * output frequencies have been rounded to the standard frequencies
194 * they are intended to match where the error is slight. */
195 static struct {
196 int mclk;
197 int fs;
198 int usb;
199 int sr;
200 } clock_cfgs[] = {
201 { 18432000, 8000, 0, 3, },
202 { 18432000, 12000, 0, 9, },
203 { 18432000, 16000, 0, 11, },
204 { 18432000, 24000, 0, 29, },
205 { 18432000, 32000, 0, 13, },
206 { 18432000, 48000, 0, 1, },
207 { 18432000, 96000, 0, 15, },
208
209 { 16934400, 8018, 0, 19, },
210 { 16934400, 11025, 0, 25, },
211 { 16934400, 22050, 0, 27, },
212 { 16934400, 44100, 0, 17, },
213 { 16934400, 88200, 0, 31, },
214
215 { 12000000, 8000, 1, 2, },
216 { 12000000, 11025, 1, 25, },
217 { 12000000, 12000, 1, 8, },
218 { 12000000, 16000, 1, 10, },
219 { 12000000, 22050, 1, 27, },
220 { 12000000, 24000, 1, 28, },
221 { 12000000, 32000, 1, 12, },
222 { 12000000, 44100, 1, 17, },
223 { 12000000, 48000, 1, 0, },
224 { 12000000, 88200, 1, 31, },
225 { 12000000, 96000, 1, 14, },
226
227 { 12288000, 8000, 0, 2, },
228 { 12288000, 12000, 0, 8, },
229 { 12288000, 16000, 0, 10, },
230 { 12288000, 24000, 0, 28, },
231 { 12288000, 32000, 0, 12, },
232 { 12288000, 48000, 0, 0, },
233 { 12288000, 96000, 0, 14, },
234
235 { 12289600, 8018, 0, 18, },
236 { 12289600, 11025, 0, 24, },
237 { 12289600, 22050, 0, 26, },
238 { 11289600, 44100, 0, 16, },
239 { 11289600, 88200, 0, 31, },
240 };
241
242 static int wm8955_configure_clocking(struct snd_soc_component *component)
243 {
244 struct wm8955_priv *wm8955 = snd_soc_component_get_drvdata(component);
245 int i, ret, val;
246 int clocking = 0;
247 int srate = 0;
248 int sr = -1;
249 struct pll_factors pll;
250
251 /* If we're not running a sample rate currently just pick one */
252 if (wm8955->fs == 0)
253 wm8955->fs = 8000;
254
255 /* Can we generate an exact output? */
256 for (i = 0; i < ARRAY_SIZE(clock_cfgs); i++) {
257 if (wm8955->fs != clock_cfgs[i].fs)
258 continue;
259 sr = i;
260
261 if (wm8955->mclk_rate == clock_cfgs[i].mclk)
262 break;
263 }
264
265 /* We should never get here with an unsupported sample rate */
266 if (sr == -1) {
267 dev_err(component->dev, "Sample rate %dHz unsupported\n",
268 wm8955->fs);
269 WARN_ON(sr == -1);
270 return -EINVAL;
271 }
272
273 if (i == ARRAY_SIZE(clock_cfgs)) {
274 /* If we can't generate the right clock from MCLK then
275 * we should configure the PLL to supply us with an
276 * appropriate clock.
277 */
278 clocking |= WM8955_MCLKSEL;
279
280 /* Use the last divider configuration we saw for the
281 * sample rate. */
282 ret = wm8955_pll_factors(component->dev, wm8955->mclk_rate,
283 clock_cfgs[sr].mclk, &pll);
284 if (ret != 0) {
285 dev_err(component->dev,
286 "Unable to generate %dHz from %dHz MCLK\n",
287 wm8955->fs, wm8955->mclk_rate);
288 return -EINVAL;
289 }
290
291 snd_soc_component_update_bits(component, WM8955_PLL_CONTROL_1,
292 WM8955_N_MASK | WM8955_K_21_18_MASK,
293 (pll.n << WM8955_N_SHIFT) |
294 pll.k >> 18);
295 snd_soc_component_update_bits(component, WM8955_PLL_CONTROL_2,
296 WM8955_K_17_9_MASK,
297 (pll.k >> 9) & WM8955_K_17_9_MASK);
298 snd_soc_component_update_bits(component, WM8955_PLL_CONTROL_3,
299 WM8955_K_8_0_MASK,
300 pll.k & WM8955_K_8_0_MASK);
301 if (pll.k)
302 snd_soc_component_update_bits(component, WM8955_PLL_CONTROL_4,
303 WM8955_KEN, WM8955_KEN);
304 else
305 snd_soc_component_update_bits(component, WM8955_PLL_CONTROL_4,
306 WM8955_KEN, 0);
307
308 if (pll.outdiv)
309 val = WM8955_PLL_RB | WM8955_PLLOUTDIV2;
310 else
311 val = WM8955_PLL_RB;
312
313 /* Now start the PLL running */
314 snd_soc_component_update_bits(component, WM8955_CLOCKING_PLL,
315 WM8955_PLL_RB | WM8955_PLLOUTDIV2, val);
316 snd_soc_component_update_bits(component, WM8955_CLOCKING_PLL,
317 WM8955_PLLEN, WM8955_PLLEN);
318 }
319
320 srate = clock_cfgs[sr].usb | (clock_cfgs[sr].sr << WM8955_SR_SHIFT);
321
322 snd_soc_component_update_bits(component, WM8955_SAMPLE_RATE,
323 WM8955_USB | WM8955_SR_MASK, srate);
324 snd_soc_component_update_bits(component, WM8955_CLOCKING_PLL,
325 WM8955_MCLKSEL, clocking);
326
327 return 0;
328 }
329
330 static int wm8955_sysclk(struct snd_soc_dapm_widget *w,
331 struct snd_kcontrol *kcontrol, int event)
332 {
333 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
334 int ret = 0;
335
336 /* Always disable the clocks - if we're doing reconfiguration this
337 * avoids misclocking.
338 */
339 snd_soc_component_update_bits(component, WM8955_POWER_MANAGEMENT_1,
340 WM8955_DIGENB, 0);
341 snd_soc_component_update_bits(component, WM8955_CLOCKING_PLL,
342 WM8955_PLL_RB | WM8955_PLLEN, 0);
343
344 switch (event) {
345 case SND_SOC_DAPM_POST_PMD:
346 break;
347 case SND_SOC_DAPM_PRE_PMU:
348 ret = wm8955_configure_clocking(component);
349 break;
350 default:
351 ret = -EINVAL;
352 break;
353 }
354
355 return ret;
356 }
357
358 static int deemph_settings[] = { 0, 32000, 44100, 48000 };
359
360 static int wm8955_set_deemph(struct snd_soc_component *component)
361 {
362 struct wm8955_priv *wm8955 = snd_soc_component_get_drvdata(component);
363 int val, i, best;
364
365 /* If we're using deemphasis select the nearest available sample
366 * rate.
367 */
368 if (wm8955->deemph) {
369 best = 1;
370 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
371 if (abs(deemph_settings[i] - wm8955->fs) <
372 abs(deemph_settings[best] - wm8955->fs))
373 best = i;
374 }
375
376 val = best << WM8955_DEEMPH_SHIFT;
377 } else {
378 val = 0;
379 }
380
381 dev_dbg(component->dev, "Set deemphasis %d\n", val);
382
383 return snd_soc_component_update_bits(component, WM8955_DAC_CONTROL,
384 WM8955_DEEMPH_MASK, val);
385 }
386
387 static int wm8955_get_deemph(struct snd_kcontrol *kcontrol,
388 struct snd_ctl_elem_value *ucontrol)
389 {
390 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
391 struct wm8955_priv *wm8955 = snd_soc_component_get_drvdata(component);
392
393 ucontrol->value.integer.value[0] = wm8955->deemph;
394 return 0;
395 }
396
397 static int wm8955_put_deemph(struct snd_kcontrol *kcontrol,
398 struct snd_ctl_elem_value *ucontrol)
399 {
400 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
401 struct wm8955_priv *wm8955 = snd_soc_component_get_drvdata(component);
402 unsigned int deemph = ucontrol->value.integer.value[0];
403
404 if (deemph > 1)
405 return -EINVAL;
406
407 wm8955->deemph = deemph;
408
409 return wm8955_set_deemph(component);
410 }
411
412 static const char *bass_mode_text[] = {
413 "Linear", "Adaptive",
414 };
415
416 static SOC_ENUM_SINGLE_DECL(bass_mode, WM8955_BASS_CONTROL, 7, bass_mode_text);
417
418 static const char *bass_cutoff_text[] = {
419 "Low", "High"
420 };
421
422 static SOC_ENUM_SINGLE_DECL(bass_cutoff, WM8955_BASS_CONTROL, 6,
423 bass_cutoff_text);
424
425 static const char *treble_cutoff_text[] = {
426 "High", "Low"
427 };
428
429 static SOC_ENUM_SINGLE_DECL(treble_cutoff, WM8955_TREBLE_CONTROL, 2,
430 treble_cutoff_text);
431
432 static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
433 static const DECLARE_TLV_DB_SCALE(atten_tlv, -600, 600, 0);
434 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
435 static const DECLARE_TLV_DB_SCALE(mono_tlv, -2100, 300, 0);
436 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
437 static const DECLARE_TLV_DB_SCALE(treble_tlv, -1200, 150, 1);
438
439 static const struct snd_kcontrol_new wm8955_snd_controls[] = {
440 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8955_LEFT_DAC_VOLUME,
441 WM8955_RIGHT_DAC_VOLUME, 0, 255, 0, digital_tlv),
442 SOC_SINGLE_TLV("Playback Attenuation Volume", WM8955_DAC_CONTROL, 7, 1, 1,
443 atten_tlv),
444 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
445 wm8955_get_deemph, wm8955_put_deemph),
446
447 SOC_ENUM("Bass Mode", bass_mode),
448 SOC_ENUM("Bass Cutoff", bass_cutoff),
449 SOC_SINGLE("Bass Volume", WM8955_BASS_CONTROL, 0, 15, 1),
450
451 SOC_ENUM("Treble Cutoff", treble_cutoff),
452 SOC_SINGLE_TLV("Treble Volume", WM8955_TREBLE_CONTROL, 0, 14, 1, treble_tlv),
453
454 SOC_SINGLE_TLV("Left Bypass Volume", WM8955_LEFT_OUT_MIX_1, 4, 7, 1,
455 bypass_tlv),
456 SOC_SINGLE_TLV("Left Mono Volume", WM8955_LEFT_OUT_MIX_2, 4, 7, 1,
457 bypass_tlv),
458
459 SOC_SINGLE_TLV("Right Mono Volume", WM8955_RIGHT_OUT_MIX_1, 4, 7, 1,
460 bypass_tlv),
461 SOC_SINGLE_TLV("Right Bypass Volume", WM8955_RIGHT_OUT_MIX_2, 4, 7, 1,
462 bypass_tlv),
463
464 /* Not a stereo pair so they line up with the DAPM switches */
465 SOC_SINGLE_TLV("Mono Left Bypass Volume", WM8955_MONO_OUT_MIX_1, 4, 7, 1,
466 mono_tlv),
467 SOC_SINGLE_TLV("Mono Right Bypass Volume", WM8955_MONO_OUT_MIX_2, 4, 7, 1,
468 mono_tlv),
469
470 SOC_DOUBLE_R_TLV("Headphone Volume", WM8955_LOUT1_VOLUME,
471 WM8955_ROUT1_VOLUME, 0, 127, 0, out_tlv),
472 SOC_DOUBLE_R("Headphone ZC Switch", WM8955_LOUT1_VOLUME,
473 WM8955_ROUT1_VOLUME, 7, 1, 0),
474
475 SOC_DOUBLE_R_TLV("Speaker Volume", WM8955_LOUT2_VOLUME,
476 WM8955_ROUT2_VOLUME, 0, 127, 0, out_tlv),
477 SOC_DOUBLE_R("Speaker ZC Switch", WM8955_LOUT2_VOLUME,
478 WM8955_ROUT2_VOLUME, 7, 1, 0),
479
480 SOC_SINGLE_TLV("Mono Volume", WM8955_MONOOUT_VOLUME, 0, 127, 0, out_tlv),
481 SOC_SINGLE("Mono ZC Switch", WM8955_MONOOUT_VOLUME, 7, 1, 0),
482 };
483
484 static const struct snd_kcontrol_new lmixer[] = {
485 SOC_DAPM_SINGLE("Playback Switch", WM8955_LEFT_OUT_MIX_1, 8, 1, 0),
486 SOC_DAPM_SINGLE("Bypass Switch", WM8955_LEFT_OUT_MIX_1, 7, 1, 0),
487 SOC_DAPM_SINGLE("Right Playback Switch", WM8955_LEFT_OUT_MIX_2, 8, 1, 0),
488 SOC_DAPM_SINGLE("Mono Switch", WM8955_LEFT_OUT_MIX_2, 7, 1, 0),
489 };
490
491 static const struct snd_kcontrol_new rmixer[] = {
492 SOC_DAPM_SINGLE("Left Playback Switch", WM8955_RIGHT_OUT_MIX_1, 8, 1, 0),
493 SOC_DAPM_SINGLE("Mono Switch", WM8955_RIGHT_OUT_MIX_1, 7, 1, 0),
494 SOC_DAPM_SINGLE("Playback Switch", WM8955_RIGHT_OUT_MIX_2, 8, 1, 0),
495 SOC_DAPM_SINGLE("Bypass Switch", WM8955_RIGHT_OUT_MIX_2, 7, 1, 0),
496 };
497
498 static const struct snd_kcontrol_new mmixer[] = {
499 SOC_DAPM_SINGLE("Left Playback Switch", WM8955_MONO_OUT_MIX_1, 8, 1, 0),
500 SOC_DAPM_SINGLE("Left Bypass Switch", WM8955_MONO_OUT_MIX_1, 7, 1, 0),
501 SOC_DAPM_SINGLE("Right Playback Switch", WM8955_MONO_OUT_MIX_2, 8, 1, 0),
502 SOC_DAPM_SINGLE("Right Bypass Switch", WM8955_MONO_OUT_MIX_2, 7, 1, 0),
503 };
504
505 static const struct snd_soc_dapm_widget wm8955_dapm_widgets[] = {
506 SND_SOC_DAPM_INPUT("MONOIN-"),
507 SND_SOC_DAPM_INPUT("MONOIN+"),
508 SND_SOC_DAPM_INPUT("LINEINR"),
509 SND_SOC_DAPM_INPUT("LINEINL"),
510
511 SND_SOC_DAPM_PGA("Mono Input", SND_SOC_NOPM, 0, 0, NULL, 0),
512
513 SND_SOC_DAPM_SUPPLY("SYSCLK", WM8955_POWER_MANAGEMENT_1, 0, 1, wm8955_sysclk,
514 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
515 SND_SOC_DAPM_SUPPLY("TSDEN", WM8955_ADDITIONAL_CONTROL_1, 8, 0, NULL, 0),
516
517 SND_SOC_DAPM_DAC("DACL", "Playback", WM8955_POWER_MANAGEMENT_2, 8, 0),
518 SND_SOC_DAPM_DAC("DACR", "Playback", WM8955_POWER_MANAGEMENT_2, 7, 0),
519
520 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8955_POWER_MANAGEMENT_2, 6, 0, NULL, 0),
521 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8955_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
522 SND_SOC_DAPM_PGA("LOUT2 PGA", WM8955_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
523 SND_SOC_DAPM_PGA("ROUT2 PGA", WM8955_POWER_MANAGEMENT_2, 3, 0, NULL, 0),
524 SND_SOC_DAPM_PGA("MOUT PGA", WM8955_POWER_MANAGEMENT_2, 2, 0, NULL, 0),
525 SND_SOC_DAPM_PGA("OUT3 PGA", WM8955_POWER_MANAGEMENT_2, 1, 0, NULL, 0),
526
527 /* The names are chosen to make the control names nice */
528 SND_SOC_DAPM_MIXER("Left", SND_SOC_NOPM, 0, 0,
529 lmixer, ARRAY_SIZE(lmixer)),
530 SND_SOC_DAPM_MIXER("Right", SND_SOC_NOPM, 0, 0,
531 rmixer, ARRAY_SIZE(rmixer)),
532 SND_SOC_DAPM_MIXER("Mono", SND_SOC_NOPM, 0, 0,
533 mmixer, ARRAY_SIZE(mmixer)),
534
535 SND_SOC_DAPM_OUTPUT("LOUT1"),
536 SND_SOC_DAPM_OUTPUT("ROUT1"),
537 SND_SOC_DAPM_OUTPUT("LOUT2"),
538 SND_SOC_DAPM_OUTPUT("ROUT2"),
539 SND_SOC_DAPM_OUTPUT("MONOOUT"),
540 SND_SOC_DAPM_OUTPUT("OUT3"),
541 };
542
543 static const struct snd_soc_dapm_route wm8955_dapm_routes[] = {
544 { "DACL", NULL, "SYSCLK" },
545 { "DACR", NULL, "SYSCLK" },
546
547 { "Mono Input", NULL, "MONOIN-" },
548 { "Mono Input", NULL, "MONOIN+" },
549
550 { "Left", "Playback Switch", "DACL" },
551 { "Left", "Right Playback Switch", "DACR" },
552 { "Left", "Bypass Switch", "LINEINL" },
553 { "Left", "Mono Switch", "Mono Input" },
554
555 { "Right", "Playback Switch", "DACR" },
556 { "Right", "Left Playback Switch", "DACL" },
557 { "Right", "Bypass Switch", "LINEINR" },
558 { "Right", "Mono Switch", "Mono Input" },
559
560 { "Mono", "Left Playback Switch", "DACL" },
561 { "Mono", "Right Playback Switch", "DACR" },
562 { "Mono", "Left Bypass Switch", "LINEINL" },
563 { "Mono", "Right Bypass Switch", "LINEINR" },
564
565 { "LOUT1 PGA", NULL, "Left" },
566 { "LOUT1", NULL, "TSDEN" },
567 { "LOUT1", NULL, "LOUT1 PGA" },
568
569 { "ROUT1 PGA", NULL, "Right" },
570 { "ROUT1", NULL, "TSDEN" },
571 { "ROUT1", NULL, "ROUT1 PGA" },
572
573 { "LOUT2 PGA", NULL, "Left" },
574 { "LOUT2", NULL, "TSDEN" },
575 { "LOUT2", NULL, "LOUT2 PGA" },
576
577 { "ROUT2 PGA", NULL, "Right" },
578 { "ROUT2", NULL, "TSDEN" },
579 { "ROUT2", NULL, "ROUT2 PGA" },
580
581 { "MOUT PGA", NULL, "Mono" },
582 { "MONOOUT", NULL, "MOUT PGA" },
583
584 /* OUT3 not currently implemented */
585 { "OUT3", NULL, "OUT3 PGA" },
586 };
587
588 static int wm8955_hw_params(struct snd_pcm_substream *substream,
589 struct snd_pcm_hw_params *params,
590 struct snd_soc_dai *dai)
591 {
592 struct snd_soc_component *component = dai->component;
593 struct wm8955_priv *wm8955 = snd_soc_component_get_drvdata(component);
594 int ret;
595 int wl;
596
597 switch (params_width(params)) {
598 case 16:
599 wl = 0;
600 break;
601 case 20:
602 wl = 0x4;
603 break;
604 case 24:
605 wl = 0x8;
606 break;
607 case 32:
608 wl = 0xc;
609 break;
610 default:
611 return -EINVAL;
612 }
613 snd_soc_component_update_bits(component, WM8955_AUDIO_INTERFACE,
614 WM8955_WL_MASK, wl);
615
616 wm8955->fs = params_rate(params);
617 wm8955_set_deemph(component);
618
619 /* If the chip is clocked then disable the clocks and force a
620 * reconfiguration, otherwise DAPM will power up the
621 * clocks for us later. */
622 ret = snd_soc_component_read(component, WM8955_POWER_MANAGEMENT_1);
623 if (ret < 0)
624 return ret;
625 if (ret & WM8955_DIGENB) {
626 snd_soc_component_update_bits(component, WM8955_POWER_MANAGEMENT_1,
627 WM8955_DIGENB, 0);
628 snd_soc_component_update_bits(component, WM8955_CLOCKING_PLL,
629 WM8955_PLL_RB | WM8955_PLLEN, 0);
630
631 wm8955_configure_clocking(component);
632 }
633
634 return 0;
635 }
636
637
638 static int wm8955_set_sysclk(struct snd_soc_dai *dai, int clk_id,
639 unsigned int freq, int dir)
640 {
641 struct snd_soc_component *component = dai->component;
642 struct wm8955_priv *priv = snd_soc_component_get_drvdata(component);
643 int div;
644
645 switch (clk_id) {
646 case WM8955_CLK_MCLK:
647 if (freq > 15000000) {
648 priv->mclk_rate = freq /= 2;
649 div = WM8955_MCLKDIV2;
650 } else {
651 priv->mclk_rate = freq;
652 div = 0;
653 }
654
655 snd_soc_component_update_bits(component, WM8955_SAMPLE_RATE,
656 WM8955_MCLKDIV2, div);
657 break;
658
659 default:
660 return -EINVAL;
661 }
662
663 dev_dbg(dai->dev, "Clock source is %d at %uHz\n", clk_id, freq);
664
665 return 0;
666 }
667
668 static int wm8955_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
669 {
670 struct snd_soc_component *component = dai->component;
671 u16 aif = 0;
672
673 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
674 case SND_SOC_DAIFMT_CBS_CFS:
675 break;
676 case SND_SOC_DAIFMT_CBM_CFM:
677 aif |= WM8955_MS;
678 break;
679 default:
680 return -EINVAL;
681 }
682
683 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
684 case SND_SOC_DAIFMT_DSP_B:
685 aif |= WM8955_LRP;
686 fallthrough;
687 case SND_SOC_DAIFMT_DSP_A:
688 aif |= 0x3;
689 break;
690 case SND_SOC_DAIFMT_I2S:
691 aif |= 0x2;
692 break;
693 case SND_SOC_DAIFMT_RIGHT_J:
694 break;
695 case SND_SOC_DAIFMT_LEFT_J:
696 aif |= 0x1;
697 break;
698 default:
699 return -EINVAL;
700 }
701
702 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
703 case SND_SOC_DAIFMT_DSP_A:
704 case SND_SOC_DAIFMT_DSP_B:
705 /* frame inversion not valid for DSP modes */
706 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
707 case SND_SOC_DAIFMT_NB_NF:
708 break;
709 case SND_SOC_DAIFMT_IB_NF:
710 aif |= WM8955_BCLKINV;
711 break;
712 default:
713 return -EINVAL;
714 }
715 break;
716
717 case SND_SOC_DAIFMT_I2S:
718 case SND_SOC_DAIFMT_RIGHT_J:
719 case SND_SOC_DAIFMT_LEFT_J:
720 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
721 case SND_SOC_DAIFMT_NB_NF:
722 break;
723 case SND_SOC_DAIFMT_IB_IF:
724 aif |= WM8955_BCLKINV | WM8955_LRP;
725 break;
726 case SND_SOC_DAIFMT_IB_NF:
727 aif |= WM8955_BCLKINV;
728 break;
729 case SND_SOC_DAIFMT_NB_IF:
730 aif |= WM8955_LRP;
731 break;
732 default:
733 return -EINVAL;
734 }
735 break;
736 default:
737 return -EINVAL;
738 }
739
740 snd_soc_component_update_bits(component, WM8955_AUDIO_INTERFACE,
741 WM8955_MS | WM8955_FORMAT_MASK | WM8955_BCLKINV |
742 WM8955_LRP, aif);
743
744 return 0;
745 }
746
747
748 static int wm8955_mute(struct snd_soc_dai *codec_dai, int mute, int direction)
749 {
750 struct snd_soc_component *component = codec_dai->component;
751 int val;
752
753 if (mute)
754 val = WM8955_DACMU;
755 else
756 val = 0;
757
758 snd_soc_component_update_bits(component, WM8955_DAC_CONTROL, WM8955_DACMU, val);
759
760 return 0;
761 }
762
763 static int wm8955_set_bias_level(struct snd_soc_component *component,
764 enum snd_soc_bias_level level)
765 {
766 struct wm8955_priv *wm8955 = snd_soc_component_get_drvdata(component);
767 int ret;
768
769 switch (level) {
770 case SND_SOC_BIAS_ON:
771 break;
772
773 case SND_SOC_BIAS_PREPARE:
774 /* VMID resistance 2*50k */
775 snd_soc_component_update_bits(component, WM8955_POWER_MANAGEMENT_1,
776 WM8955_VMIDSEL_MASK,
777 0x1 << WM8955_VMIDSEL_SHIFT);
778
779 /* Default bias current */
780 snd_soc_component_update_bits(component, WM8955_ADDITIONAL_CONTROL_1,
781 WM8955_VSEL_MASK,
782 0x2 << WM8955_VSEL_SHIFT);
783 break;
784
785 case SND_SOC_BIAS_STANDBY:
786 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
787 ret = regulator_bulk_enable(ARRAY_SIZE(wm8955->supplies),
788 wm8955->supplies);
789 if (ret != 0) {
790 dev_err(component->dev,
791 "Failed to enable supplies: %d\n",
792 ret);
793 return ret;
794 }
795
796 regcache_sync(wm8955->regmap);
797
798 /* Enable VREF and VMID */
799 snd_soc_component_update_bits(component, WM8955_POWER_MANAGEMENT_1,
800 WM8955_VREF |
801 WM8955_VMIDSEL_MASK,
802 WM8955_VREF |
803 0x3 << WM8955_VREF_SHIFT);
804
805 /* Let VMID ramp */
806 msleep(500);
807
808 /* High resistance VROI to maintain outputs */
809 snd_soc_component_update_bits(component,
810 WM8955_ADDITIONAL_CONTROL_3,
811 WM8955_VROI, WM8955_VROI);
812 }
813
814 /* Maintain VMID with 2*250k */
815 snd_soc_component_update_bits(component, WM8955_POWER_MANAGEMENT_1,
816 WM8955_VMIDSEL_MASK,
817 0x2 << WM8955_VMIDSEL_SHIFT);
818
819 /* Minimum bias current */
820 snd_soc_component_update_bits(component, WM8955_ADDITIONAL_CONTROL_1,
821 WM8955_VSEL_MASK, 0);
822 break;
823
824 case SND_SOC_BIAS_OFF:
825 /* Low resistance VROI to help discharge */
826 snd_soc_component_update_bits(component,
827 WM8955_ADDITIONAL_CONTROL_3,
828 WM8955_VROI, 0);
829
830 /* Turn off VMID and VREF */
831 snd_soc_component_update_bits(component, WM8955_POWER_MANAGEMENT_1,
832 WM8955_VREF |
833 WM8955_VMIDSEL_MASK, 0);
834
835 regulator_bulk_disable(ARRAY_SIZE(wm8955->supplies),
836 wm8955->supplies);
837 break;
838 }
839 return 0;
840 }
841
842 #define WM8955_RATES SNDRV_PCM_RATE_8000_96000
843
844 #define WM8955_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
845 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
846
847 static const struct snd_soc_dai_ops wm8955_dai_ops = {
848 .set_sysclk = wm8955_set_sysclk,
849 .set_fmt = wm8955_set_fmt,
850 .hw_params = wm8955_hw_params,
851 .mute_stream = wm8955_mute,
852 .no_capture_mute = 1,
853 };
854
855 static struct snd_soc_dai_driver wm8955_dai = {
856 .name = "wm8955-hifi",
857 .playback = {
858 .stream_name = "Playback",
859 .channels_min = 2,
860 .channels_max = 2,
861 .rates = WM8955_RATES,
862 .formats = WM8955_FORMATS,
863 },
864 .ops = &wm8955_dai_ops,
865 };
866
867 static int wm8955_probe(struct snd_soc_component *component)
868 {
869 struct wm8955_priv *wm8955 = snd_soc_component_get_drvdata(component);
870 struct wm8955_pdata *pdata = dev_get_platdata(component->dev);
871 int ret, i;
872
873 for (i = 0; i < ARRAY_SIZE(wm8955->supplies); i++)
874 wm8955->supplies[i].supply = wm8955_supply_names[i];
875
876 ret = devm_regulator_bulk_get(component->dev, ARRAY_SIZE(wm8955->supplies),
877 wm8955->supplies);
878 if (ret != 0) {
879 dev_err(component->dev, "Failed to request supplies: %d\n", ret);
880 return ret;
881 }
882
883 ret = regulator_bulk_enable(ARRAY_SIZE(wm8955->supplies),
884 wm8955->supplies);
885 if (ret != 0) {
886 dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
887 return ret;
888 }
889
890 ret = wm8955_reset(component);
891 if (ret < 0) {
892 dev_err(component->dev, "Failed to issue reset: %d\n", ret);
893 goto err_enable;
894 }
895
896 /* Change some default settings - latch VU and enable ZC */
897 snd_soc_component_update_bits(component, WM8955_LEFT_DAC_VOLUME,
898 WM8955_LDVU, WM8955_LDVU);
899 snd_soc_component_update_bits(component, WM8955_RIGHT_DAC_VOLUME,
900 WM8955_RDVU, WM8955_RDVU);
901 snd_soc_component_update_bits(component, WM8955_LOUT1_VOLUME,
902 WM8955_LO1VU | WM8955_LO1ZC,
903 WM8955_LO1VU | WM8955_LO1ZC);
904 snd_soc_component_update_bits(component, WM8955_ROUT1_VOLUME,
905 WM8955_RO1VU | WM8955_RO1ZC,
906 WM8955_RO1VU | WM8955_RO1ZC);
907 snd_soc_component_update_bits(component, WM8955_LOUT2_VOLUME,
908 WM8955_LO2VU | WM8955_LO2ZC,
909 WM8955_LO2VU | WM8955_LO2ZC);
910 snd_soc_component_update_bits(component, WM8955_ROUT2_VOLUME,
911 WM8955_RO2VU | WM8955_RO2ZC,
912 WM8955_RO2VU | WM8955_RO2ZC);
913 snd_soc_component_update_bits(component, WM8955_MONOOUT_VOLUME,
914 WM8955_MOZC, WM8955_MOZC);
915
916 /* Also enable adaptive bass boost by default */
917 snd_soc_component_update_bits(component, WM8955_BASS_CONTROL, WM8955_BB, WM8955_BB);
918
919 /* Set platform data values */
920 if (pdata) {
921 if (pdata->out2_speaker)
922 snd_soc_component_update_bits(component, WM8955_ADDITIONAL_CONTROL_2,
923 WM8955_ROUT2INV, WM8955_ROUT2INV);
924
925 if (pdata->monoin_diff)
926 snd_soc_component_update_bits(component, WM8955_MONO_OUT_MIX_1,
927 WM8955_DMEN, WM8955_DMEN);
928 }
929
930 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
931
932 /* Bias level configuration will have done an extra enable */
933 regulator_bulk_disable(ARRAY_SIZE(wm8955->supplies), wm8955->supplies);
934
935 return 0;
936
937 err_enable:
938 regulator_bulk_disable(ARRAY_SIZE(wm8955->supplies), wm8955->supplies);
939 return ret;
940 }
941
942 static const struct snd_soc_component_driver soc_component_dev_wm8955 = {
943 .probe = wm8955_probe,
944 .set_bias_level = wm8955_set_bias_level,
945 .controls = wm8955_snd_controls,
946 .num_controls = ARRAY_SIZE(wm8955_snd_controls),
947 .dapm_widgets = wm8955_dapm_widgets,
948 .num_dapm_widgets = ARRAY_SIZE(wm8955_dapm_widgets),
949 .dapm_routes = wm8955_dapm_routes,
950 .num_dapm_routes = ARRAY_SIZE(wm8955_dapm_routes),
951 .suspend_bias_off = 1,
952 .idle_bias_on = 1,
953 .use_pmdown_time = 1,
954 .endianness = 1,
955 };
956
957 static const struct regmap_config wm8955_regmap = {
958 .reg_bits = 7,
959 .val_bits = 9,
960
961 .max_register = WM8955_MAX_REGISTER,
962 .volatile_reg = wm8955_volatile,
963 .writeable_reg = wm8955_writeable,
964
965 .cache_type = REGCACHE_MAPLE,
966 .reg_defaults = wm8955_reg_defaults,
967 .num_reg_defaults = ARRAY_SIZE(wm8955_reg_defaults),
968 };
969
970 static int wm8955_i2c_probe(struct i2c_client *i2c)
971 {
972 struct wm8955_priv *wm8955;
973 int ret;
974
975 wm8955 = devm_kzalloc(&i2c->dev, sizeof(struct wm8955_priv),
976 GFP_KERNEL);
977 if (wm8955 == NULL)
978 return -ENOMEM;
979
980 wm8955->regmap = devm_regmap_init_i2c(i2c, &wm8955_regmap);
981 if (IS_ERR(wm8955->regmap)) {
982 ret = PTR_ERR(wm8955->regmap);
983 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
984 ret);
985 return ret;
986 }
987
988 i2c_set_clientdata(i2c, wm8955);
989
990 ret = devm_snd_soc_register_component(&i2c->dev,
991 &soc_component_dev_wm8955, &wm8955_dai, 1);
992
993 return ret;
994 }
995
996 static const struct i2c_device_id wm8955_i2c_id[] = {
997 { "wm8955" },
998 { }
999 };
1000 MODULE_DEVICE_TABLE(i2c, wm8955_i2c_id);
1001
1002 static struct i2c_driver wm8955_i2c_driver = {
1003 .driver = {
1004 .name = "wm8955",
1005 },
1006 .probe = wm8955_i2c_probe,
1007 .id_table = wm8955_i2c_id,
1008 };
1009
1010 module_i2c_driver(wm8955_i2c_driver);
1011
1012 MODULE_DESCRIPTION("ASoC WM8955 driver");
1013 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1014 MODULE_LICENSE("GPL");
1015
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