1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * wm9081.c -- WM9081 ALSA SoC Audio driver
4 *
5 * Author: Mark Brown
6 *
7 * Copyright 2009-12 Wolfson Microelectronics plc
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/device.h>
15 #include <linux/pm.h>
16 #include <linux/i2c.h>
17 #include <linux/regmap.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
26 #include <sound/wm9081.h>
27 #include "wm9081.h"
28
29 static const struct reg_default wm9081_reg[] = {
30 { 2, 0x00B9 }, /* R2 - Analogue Lineout */
31 { 3, 0x00B9 }, /* R3 - Analogue Speaker PGA */
32 { 4, 0x0001 }, /* R4 - VMID Control */
33 { 5, 0x0068 }, /* R5 - Bias Control 1 */
34 { 7, 0x0000 }, /* R7 - Analogue Mixer */
35 { 8, 0x0000 }, /* R8 - Anti Pop Control */
36 { 9, 0x01DB }, /* R9 - Analogue Speaker 1 */
37 { 10, 0x0018 }, /* R10 - Analogue Speaker 2 */
38 { 11, 0x0180 }, /* R11 - Power Management */
39 { 12, 0x0000 }, /* R12 - Clock Control 1 */
40 { 13, 0x0038 }, /* R13 - Clock Control 2 */
41 { 14, 0x4000 }, /* R14 - Clock Control 3 */
42 { 16, 0x0000 }, /* R16 - FLL Control 1 */
43 { 17, 0x0200 }, /* R17 - FLL Control 2 */
44 { 18, 0x0000 }, /* R18 - FLL Control 3 */
45 { 19, 0x0204 }, /* R19 - FLL Control 4 */
46 { 20, 0x0000 }, /* R20 - FLL Control 5 */
47 { 22, 0x0000 }, /* R22 - Audio Interface 1 */
48 { 23, 0x0002 }, /* R23 - Audio Interface 2 */
49 { 24, 0x0008 }, /* R24 - Audio Interface 3 */
50 { 25, 0x0022 }, /* R25 - Audio Interface 4 */
51 { 27, 0x0006 }, /* R27 - Interrupt Status Mask */
52 { 28, 0x0000 }, /* R28 - Interrupt Polarity */
53 { 29, 0x0000 }, /* R29 - Interrupt Control */
54 { 30, 0x00C0 }, /* R30 - DAC Digital 1 */
55 { 31, 0x0008 }, /* R31 - DAC Digital 2 */
56 { 32, 0x09AF }, /* R32 - DRC 1 */
57 { 33, 0x4201 }, /* R33 - DRC 2 */
58 { 34, 0x0000 }, /* R34 - DRC 3 */
59 { 35, 0x0000 }, /* R35 - DRC 4 */
60 { 38, 0x0000 }, /* R38 - Write Sequencer 1 */
61 { 39, 0x0000 }, /* R39 - Write Sequencer 2 */
62 { 40, 0x0002 }, /* R40 - MW Slave 1 */
63 { 42, 0x0000 }, /* R42 - EQ 1 */
64 { 43, 0x0000 }, /* R43 - EQ 2 */
65 { 44, 0x0FCA }, /* R44 - EQ 3 */
66 { 45, 0x0400 }, /* R45 - EQ 4 */
67 { 46, 0x00B8 }, /* R46 - EQ 5 */
68 { 47, 0x1EB5 }, /* R47 - EQ 6 */
69 { 48, 0xF145 }, /* R48 - EQ 7 */
70 { 49, 0x0B75 }, /* R49 - EQ 8 */
71 { 50, 0x01C5 }, /* R50 - EQ 9 */
72 { 51, 0x169E }, /* R51 - EQ 10 */
73 { 52, 0xF829 }, /* R52 - EQ 11 */
74 { 53, 0x07AD }, /* R53 - EQ 12 */
75 { 54, 0x1103 }, /* R54 - EQ 13 */
76 { 55, 0x1C58 }, /* R55 - EQ 14 */
77 { 56, 0xF373 }, /* R56 - EQ 15 */
78 { 57, 0x0A54 }, /* R57 - EQ 16 */
79 { 58, 0x0558 }, /* R58 - EQ 17 */
80 { 59, 0x0564 }, /* R59 - EQ 18 */
81 { 60, 0x0559 }, /* R60 - EQ 19 */
82 { 61, 0x4000 }, /* R61 - EQ 20 */
83 };
84
85 static struct {
86 int ratio;
87 int clk_sys_rate;
88 } clk_sys_rates[] = {
89 { 64, 0 },
90 { 128, 1 },
91 { 192, 2 },
92 { 256, 3 },
93 { 384, 4 },
94 { 512, 5 },
95 { 768, 6 },
96 { 1024, 7 },
97 { 1408, 8 },
98 { 1536, 9 },
99 };
100
101 static struct {
102 int rate;
103 int sample_rate;
104 } sample_rates[] = {
105 { 8000, 0 },
106 { 11025, 1 },
107 { 12000, 2 },
108 { 16000, 3 },
109 { 22050, 4 },
110 { 24000, 5 },
111 { 32000, 6 },
112 { 44100, 7 },
113 { 48000, 8 },
114 { 88200, 9 },
115 { 96000, 10 },
116 };
117
118 static struct {
119 int div; /* *10 due to .5s */
120 int bclk_div;
121 } bclk_divs[] = {
122 { 10, 0 },
123 { 15, 1 },
124 { 20, 2 },
125 { 30, 3 },
126 { 40, 4 },
127 { 50, 5 },
128 { 55, 6 },
129 { 60, 7 },
130 { 80, 8 },
131 { 100, 9 },
132 { 110, 10 },
133 { 120, 11 },
134 { 160, 12 },
135 { 200, 13 },
136 { 220, 14 },
137 { 240, 15 },
138 { 250, 16 },
139 { 300, 17 },
140 { 320, 18 },
141 { 440, 19 },
142 { 480, 20 },
143 };
144
145 struct wm9081_priv {
146 struct regmap *regmap;
147 int sysclk_source;
148 int mclk_rate;
149 int sysclk_rate;
150 int fs;
151 int bclk;
152 int master;
153 int fll_fref;
154 int fll_fout;
155 int tdm_width;
156 struct wm9081_pdata pdata;
157 };
158
wm9081_volatile_register(struct device * dev,unsigned int reg)159 static bool wm9081_volatile_register(struct device *dev, unsigned int reg)
160 {
161 switch (reg) {
162 case WM9081_SOFTWARE_RESET:
163 case WM9081_INTERRUPT_STATUS:
164 return true;
165 default:
166 return false;
167 }
168 }
169
wm9081_readable_register(struct device * dev,unsigned int reg)170 static bool wm9081_readable_register(struct device *dev, unsigned int reg)
171 {
172 switch (reg) {
173 case WM9081_SOFTWARE_RESET:
174 case WM9081_ANALOGUE_LINEOUT:
175 case WM9081_ANALOGUE_SPEAKER_PGA:
176 case WM9081_VMID_CONTROL:
177 case WM9081_BIAS_CONTROL_1:
178 case WM9081_ANALOGUE_MIXER:
179 case WM9081_ANTI_POP_CONTROL:
180 case WM9081_ANALOGUE_SPEAKER_1:
181 case WM9081_ANALOGUE_SPEAKER_2:
182 case WM9081_POWER_MANAGEMENT:
183 case WM9081_CLOCK_CONTROL_1:
184 case WM9081_CLOCK_CONTROL_2:
185 case WM9081_CLOCK_CONTROL_3:
186 case WM9081_FLL_CONTROL_1:
187 case WM9081_FLL_CONTROL_2:
188 case WM9081_FLL_CONTROL_3:
189 case WM9081_FLL_CONTROL_4:
190 case WM9081_FLL_CONTROL_5:
191 case WM9081_AUDIO_INTERFACE_1:
192 case WM9081_AUDIO_INTERFACE_2:
193 case WM9081_AUDIO_INTERFACE_3:
194 case WM9081_AUDIO_INTERFACE_4:
195 case WM9081_INTERRUPT_STATUS:
196 case WM9081_INTERRUPT_STATUS_MASK:
197 case WM9081_INTERRUPT_POLARITY:
198 case WM9081_INTERRUPT_CONTROL:
199 case WM9081_DAC_DIGITAL_1:
200 case WM9081_DAC_DIGITAL_2:
201 case WM9081_DRC_1:
202 case WM9081_DRC_2:
203 case WM9081_DRC_3:
204 case WM9081_DRC_4:
205 case WM9081_WRITE_SEQUENCER_1:
206 case WM9081_WRITE_SEQUENCER_2:
207 case WM9081_MW_SLAVE_1:
208 case WM9081_EQ_1:
209 case WM9081_EQ_2:
210 case WM9081_EQ_3:
211 case WM9081_EQ_4:
212 case WM9081_EQ_5:
213 case WM9081_EQ_6:
214 case WM9081_EQ_7:
215 case WM9081_EQ_8:
216 case WM9081_EQ_9:
217 case WM9081_EQ_10:
218 case WM9081_EQ_11:
219 case WM9081_EQ_12:
220 case WM9081_EQ_13:
221 case WM9081_EQ_14:
222 case WM9081_EQ_15:
223 case WM9081_EQ_16:
224 case WM9081_EQ_17:
225 case WM9081_EQ_18:
226 case WM9081_EQ_19:
227 case WM9081_EQ_20:
228 return true;
229 default:
230 return false;
231 }
232 }
233
wm9081_reset(struct regmap * map)234 static int wm9081_reset(struct regmap *map)
235 {
236 return regmap_write(map, WM9081_SOFTWARE_RESET, 0x9081);
237 }
238
239 static const DECLARE_TLV_DB_SCALE(drc_in_tlv, -4500, 75, 0);
240 static const DECLARE_TLV_DB_SCALE(drc_out_tlv, -2250, 75, 0);
241 static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0);
242 static const DECLARE_TLV_DB_RANGE(drc_max_tlv,
243 0, 0, TLV_DB_SCALE_ITEM(1200, 0, 0),
244 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0),
245 2, 2, TLV_DB_SCALE_ITEM(2400, 0, 0),
246 3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0)
247 );
248 static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0);
249 static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -300, 50, 0);
250
251 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
252
253 static const DECLARE_TLV_DB_SCALE(in_tlv, -600, 600, 0);
254 static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1);
255 static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
256
257 static const char *drc_high_text[] = {
258 "1",
259 "1/2",
260 "1/4",
261 "1/8",
262 "1/16",
263 "0",
264 };
265
266 static SOC_ENUM_SINGLE_DECL(drc_high, WM9081_DRC_3, 3, drc_high_text);
267
268 static const char *drc_low_text[] = {
269 "1",
270 "1/2",
271 "1/4",
272 "1/8",
273 "0",
274 };
275
276 static SOC_ENUM_SINGLE_DECL(drc_low, WM9081_DRC_3, 0, drc_low_text);
277
278 static const char *drc_atk_text[] = {
279 "181us",
280 "181us",
281 "363us",
282 "726us",
283 "1.45ms",
284 "2.9ms",
285 "5.8ms",
286 "11.6ms",
287 "23.2ms",
288 "46.4ms",
289 "92.8ms",
290 "185.6ms",
291 };
292
293 static SOC_ENUM_SINGLE_DECL(drc_atk, WM9081_DRC_2, 12, drc_atk_text);
294
295 static const char *drc_dcy_text[] = {
296 "186ms",
297 "372ms",
298 "743ms",
299 "1.49s",
300 "2.97s",
301 "5.94s",
302 "11.89s",
303 "23.78s",
304 "47.56s",
305 };
306
307 static SOC_ENUM_SINGLE_DECL(drc_dcy, WM9081_DRC_2, 8, drc_dcy_text);
308
309 static const char *drc_qr_dcy_text[] = {
310 "0.725ms",
311 "1.45ms",
312 "5.8ms",
313 };
314
315 static SOC_ENUM_SINGLE_DECL(drc_qr_dcy, WM9081_DRC_2, 4, drc_qr_dcy_text);
316
317 static const char *dac_deemph_text[] = {
318 "None",
319 "32kHz",
320 "44.1kHz",
321 "48kHz",
322 };
323
324 static SOC_ENUM_SINGLE_DECL(dac_deemph, WM9081_DAC_DIGITAL_2, 1,
325 dac_deemph_text);
326
327 static const char *speaker_mode_text[] = {
328 "Class D",
329 "Class AB",
330 };
331
332 static SOC_ENUM_SINGLE_DECL(speaker_mode, WM9081_ANALOGUE_SPEAKER_2, 6,
333 speaker_mode_text);
334
speaker_mode_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)335 static int speaker_mode_get(struct snd_kcontrol *kcontrol,
336 struct snd_ctl_elem_value *ucontrol)
337 {
338 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
339 unsigned int reg;
340
341 reg = snd_soc_component_read(component, WM9081_ANALOGUE_SPEAKER_2);
342 if (reg & WM9081_SPK_MODE)
343 ucontrol->value.enumerated.item[0] = 1;
344 else
345 ucontrol->value.enumerated.item[0] = 0;
346
347 return 0;
348 }
349
350 /*
351 * Stop any attempts to change speaker mode while the speaker is enabled.
352 *
353 * We also have some special anti-pop controls dependent on speaker
354 * mode which must be changed along with the mode.
355 */
speaker_mode_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)356 static int speaker_mode_put(struct snd_kcontrol *kcontrol,
357 struct snd_ctl_elem_value *ucontrol)
358 {
359 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
360 unsigned int reg_pwr = snd_soc_component_read(component, WM9081_POWER_MANAGEMENT);
361 unsigned int reg2 = snd_soc_component_read(component, WM9081_ANALOGUE_SPEAKER_2);
362
363 /* Are we changing anything? */
364 if (ucontrol->value.enumerated.item[0] ==
365 ((reg2 & WM9081_SPK_MODE) != 0))
366 return 0;
367
368 /* Don't try to change modes while enabled */
369 if (reg_pwr & WM9081_SPK_ENA)
370 return -EINVAL;
371
372 if (ucontrol->value.enumerated.item[0]) {
373 /* Class AB */
374 reg2 &= ~(WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL);
375 reg2 |= WM9081_SPK_MODE;
376 } else {
377 /* Class D */
378 reg2 |= WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL;
379 reg2 &= ~WM9081_SPK_MODE;
380 }
381
382 snd_soc_component_write(component, WM9081_ANALOGUE_SPEAKER_2, reg2);
383
384 return 0;
385 }
386
387 static const struct snd_kcontrol_new wm9081_snd_controls[] = {
388 SOC_SINGLE_TLV("IN1 Volume", WM9081_ANALOGUE_MIXER, 1, 1, 1, in_tlv),
389 SOC_SINGLE_TLV("IN2 Volume", WM9081_ANALOGUE_MIXER, 3, 1, 1, in_tlv),
390
391 SOC_SINGLE_TLV("Playback Volume", WM9081_DAC_DIGITAL_1, 1, 96, 0, dac_tlv),
392
393 SOC_SINGLE("LINEOUT Switch", WM9081_ANALOGUE_LINEOUT, 7, 1, 1),
394 SOC_SINGLE("LINEOUT ZC Switch", WM9081_ANALOGUE_LINEOUT, 6, 1, 0),
395 SOC_SINGLE_TLV("LINEOUT Volume", WM9081_ANALOGUE_LINEOUT, 0, 63, 0, out_tlv),
396
397 SOC_SINGLE("DRC Switch", WM9081_DRC_1, 15, 1, 0),
398 SOC_ENUM("DRC High Slope", drc_high),
399 SOC_ENUM("DRC Low Slope", drc_low),
400 SOC_SINGLE_TLV("DRC Input Volume", WM9081_DRC_4, 5, 60, 1, drc_in_tlv),
401 SOC_SINGLE_TLV("DRC Output Volume", WM9081_DRC_4, 0, 30, 1, drc_out_tlv),
402 SOC_SINGLE_TLV("DRC Minimum Volume", WM9081_DRC_2, 2, 3, 1, drc_min_tlv),
403 SOC_SINGLE_TLV("DRC Maximum Volume", WM9081_DRC_2, 0, 3, 0, drc_max_tlv),
404 SOC_ENUM("DRC Attack", drc_atk),
405 SOC_ENUM("DRC Decay", drc_dcy),
406 SOC_SINGLE("DRC Quick Release Switch", WM9081_DRC_1, 2, 1, 0),
407 SOC_SINGLE_TLV("DRC Quick Release Volume", WM9081_DRC_2, 6, 3, 0, drc_qr_tlv),
408 SOC_ENUM("DRC Quick Release Decay", drc_qr_dcy),
409 SOC_SINGLE_TLV("DRC Startup Volume", WM9081_DRC_1, 6, 18, 0, drc_startup_tlv),
410
411 SOC_SINGLE("EQ Switch", WM9081_EQ_1, 0, 1, 0),
412
413 SOC_SINGLE("Speaker DC Volume", WM9081_ANALOGUE_SPEAKER_1, 3, 5, 0),
414 SOC_SINGLE("Speaker AC Volume", WM9081_ANALOGUE_SPEAKER_1, 0, 5, 0),
415 SOC_SINGLE("Speaker Switch", WM9081_ANALOGUE_SPEAKER_PGA, 7, 1, 1),
416 SOC_SINGLE("Speaker ZC Switch", WM9081_ANALOGUE_SPEAKER_PGA, 6, 1, 0),
417 SOC_SINGLE_TLV("Speaker Volume", WM9081_ANALOGUE_SPEAKER_PGA, 0, 63, 0,
418 out_tlv),
419 SOC_ENUM("DAC Deemphasis", dac_deemph),
420 SOC_ENUM_EXT("Speaker Mode", speaker_mode, speaker_mode_get, speaker_mode_put),
421 };
422
423 static const struct snd_kcontrol_new wm9081_eq_controls[] = {
424 SOC_SINGLE_TLV("EQ1 Volume", WM9081_EQ_1, 11, 24, 0, eq_tlv),
425 SOC_SINGLE_TLV("EQ2 Volume", WM9081_EQ_1, 6, 24, 0, eq_tlv),
426 SOC_SINGLE_TLV("EQ3 Volume", WM9081_EQ_1, 1, 24, 0, eq_tlv),
427 SOC_SINGLE_TLV("EQ4 Volume", WM9081_EQ_2, 11, 24, 0, eq_tlv),
428 SOC_SINGLE_TLV("EQ5 Volume", WM9081_EQ_2, 6, 24, 0, eq_tlv),
429 };
430
431 static const struct snd_kcontrol_new mixer[] = {
432 SOC_DAPM_SINGLE("IN1 Switch", WM9081_ANALOGUE_MIXER, 0, 1, 0),
433 SOC_DAPM_SINGLE("IN2 Switch", WM9081_ANALOGUE_MIXER, 2, 1, 0),
434 SOC_DAPM_SINGLE("Playback Switch", WM9081_ANALOGUE_MIXER, 4, 1, 0),
435 };
436
437 struct _fll_div {
438 u16 fll_fratio;
439 u16 fll_outdiv;
440 u16 fll_clk_ref_div;
441 u16 n;
442 u16 k;
443 };
444
445 /* The size in bits of the FLL divide multiplied by 10
446 * to allow rounding later */
447 #define FIXED_FLL_SIZE ((1 << 16) * 10)
448
449 static struct {
450 unsigned int min;
451 unsigned int max;
452 u16 fll_fratio;
453 int ratio;
454 } fll_fratios[] = {
455 { 0, 64000, 4, 16 },
456 { 64000, 128000, 3, 8 },
457 { 128000, 256000, 2, 4 },
458 { 256000, 1000000, 1, 2 },
459 { 1000000, 13500000, 0, 1 },
460 };
461
fll_factors(struct _fll_div * fll_div,unsigned int Fref,unsigned int Fout)462 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
463 unsigned int Fout)
464 {
465 u64 Kpart;
466 unsigned int K, Ndiv, Nmod, target;
467 unsigned int div;
468 int i;
469
470 /* Fref must be <=13.5MHz */
471 div = 1;
472 while ((Fref / div) > 13500000) {
473 div *= 2;
474
475 if (div > 8) {
476 pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
477 Fref);
478 return -EINVAL;
479 }
480 }
481 fll_div->fll_clk_ref_div = div / 2;
482
483 pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
484
485 /* Apply the division for our remaining calculations */
486 Fref /= div;
487
488 /* Fvco should be 90-100MHz; don't check the upper bound */
489 div = 0;
490 target = Fout * 2;
491 while (target < 90000000) {
492 div++;
493 target *= 2;
494 if (div > 7) {
495 pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
496 Fout);
497 return -EINVAL;
498 }
499 }
500 fll_div->fll_outdiv = div;
501
502 pr_debug("Fvco=%dHz\n", target);
503
504 /* Find an appropriate FLL_FRATIO and factor it out of the target */
505 for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
506 if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
507 fll_div->fll_fratio = fll_fratios[i].fll_fratio;
508 target /= fll_fratios[i].ratio;
509 break;
510 }
511 }
512 if (i == ARRAY_SIZE(fll_fratios)) {
513 pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
514 return -EINVAL;
515 }
516
517 /* Now, calculate N.K */
518 Ndiv = target / Fref;
519
520 fll_div->n = Ndiv;
521 Nmod = target % Fref;
522 pr_debug("Nmod=%d\n", Nmod);
523
524 /* Calculate fractional part - scale up so we can round. */
525 Kpart = FIXED_FLL_SIZE * (long long)Nmod;
526
527 do_div(Kpart, Fref);
528
529 K = Kpart & 0xFFFFFFFF;
530
531 if ((K % 10) >= 5)
532 K += 5;
533
534 /* Move down to proper range now rounding is done */
535 fll_div->k = K / 10;
536
537 pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
538 fll_div->n, fll_div->k,
539 fll_div->fll_fratio, fll_div->fll_outdiv,
540 fll_div->fll_clk_ref_div);
541
542 return 0;
543 }
544
wm9081_set_fll(struct snd_soc_component * component,int fll_id,unsigned int Fref,unsigned int Fout)545 static int wm9081_set_fll(struct snd_soc_component *component, int fll_id,
546 unsigned int Fref, unsigned int Fout)
547 {
548 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component);
549 u16 reg1, reg4, reg5;
550 struct _fll_div fll_div;
551 int ret;
552 int clk_sys_reg;
553
554 /* Any change? */
555 if (Fref == wm9081->fll_fref && Fout == wm9081->fll_fout)
556 return 0;
557
558 /* Disable the FLL */
559 if (Fout == 0) {
560 dev_dbg(component->dev, "FLL disabled\n");
561 wm9081->fll_fref = 0;
562 wm9081->fll_fout = 0;
563
564 return 0;
565 }
566
567 ret = fll_factors(&fll_div, Fref, Fout);
568 if (ret != 0)
569 return ret;
570
571 reg5 = snd_soc_component_read(component, WM9081_FLL_CONTROL_5);
572 reg5 &= ~WM9081_FLL_CLK_SRC_MASK;
573
574 switch (fll_id) {
575 case WM9081_SYSCLK_FLL_MCLK:
576 reg5 |= 0x1;
577 break;
578
579 default:
580 dev_err(component->dev, "Unknown FLL ID %d\n", fll_id);
581 return -EINVAL;
582 }
583
584 /* Disable CLK_SYS while we reconfigure */
585 clk_sys_reg = snd_soc_component_read(component, WM9081_CLOCK_CONTROL_3);
586 if (clk_sys_reg & WM9081_CLK_SYS_ENA)
587 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_3,
588 clk_sys_reg & ~WM9081_CLK_SYS_ENA);
589
590 /* Any FLL configuration change requires that the FLL be
591 * disabled first. */
592 reg1 = snd_soc_component_read(component, WM9081_FLL_CONTROL_1);
593 reg1 &= ~WM9081_FLL_ENA;
594 snd_soc_component_write(component, WM9081_FLL_CONTROL_1, reg1);
595
596 /* Apply the configuration */
597 if (fll_div.k)
598 reg1 |= WM9081_FLL_FRAC_MASK;
599 else
600 reg1 &= ~WM9081_FLL_FRAC_MASK;
601 snd_soc_component_write(component, WM9081_FLL_CONTROL_1, reg1);
602
603 snd_soc_component_write(component, WM9081_FLL_CONTROL_2,
604 (fll_div.fll_outdiv << WM9081_FLL_OUTDIV_SHIFT) |
605 (fll_div.fll_fratio << WM9081_FLL_FRATIO_SHIFT));
606 snd_soc_component_write(component, WM9081_FLL_CONTROL_3, fll_div.k);
607
608 reg4 = snd_soc_component_read(component, WM9081_FLL_CONTROL_4);
609 reg4 &= ~WM9081_FLL_N_MASK;
610 reg4 |= fll_div.n << WM9081_FLL_N_SHIFT;
611 snd_soc_component_write(component, WM9081_FLL_CONTROL_4, reg4);
612
613 reg5 &= ~WM9081_FLL_CLK_REF_DIV_MASK;
614 reg5 |= fll_div.fll_clk_ref_div << WM9081_FLL_CLK_REF_DIV_SHIFT;
615 snd_soc_component_write(component, WM9081_FLL_CONTROL_5, reg5);
616
617 /* Set gain to the recommended value */
618 snd_soc_component_update_bits(component, WM9081_FLL_CONTROL_4,
619 WM9081_FLL_GAIN_MASK, 0);
620
621 /* Enable the FLL */
622 snd_soc_component_write(component, WM9081_FLL_CONTROL_1, reg1 | WM9081_FLL_ENA);
623
624 /* Then bring CLK_SYS up again if it was disabled */
625 if (clk_sys_reg & WM9081_CLK_SYS_ENA)
626 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_3, clk_sys_reg);
627
628 dev_dbg(component->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
629
630 wm9081->fll_fref = Fref;
631 wm9081->fll_fout = Fout;
632
633 return 0;
634 }
635
configure_clock(struct snd_soc_component * component)636 static int configure_clock(struct snd_soc_component *component)
637 {
638 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component);
639 int new_sysclk, i, target;
640 unsigned int reg;
641 int ret = 0;
642 int mclkdiv = 0;
643 int fll = 0;
644
645 switch (wm9081->sysclk_source) {
646 case WM9081_SYSCLK_MCLK:
647 if (wm9081->mclk_rate > 12225000) {
648 mclkdiv = 1;
649 wm9081->sysclk_rate = wm9081->mclk_rate / 2;
650 } else {
651 wm9081->sysclk_rate = wm9081->mclk_rate;
652 }
653 wm9081_set_fll(component, WM9081_SYSCLK_FLL_MCLK, 0, 0);
654 break;
655
656 case WM9081_SYSCLK_FLL_MCLK:
657 /* If we have a sample rate calculate a CLK_SYS that
658 * gives us a suitable DAC configuration, plus BCLK.
659 * Ideally we would check to see if we can clock
660 * directly from MCLK and only use the FLL if this is
661 * not the case, though care must be taken with free
662 * running mode.
663 */
664 if (wm9081->master && wm9081->bclk) {
665 /* Make sure we can generate CLK_SYS and BCLK
666 * and that we've got 3MHz for optimal
667 * performance. */
668 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
669 target = wm9081->fs * clk_sys_rates[i].ratio;
670 new_sysclk = target;
671 if (target >= wm9081->bclk &&
672 target > 3000000)
673 break;
674 }
675
676 if (i == ARRAY_SIZE(clk_sys_rates))
677 return -EINVAL;
678
679 } else if (wm9081->fs) {
680 for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
681 new_sysclk = clk_sys_rates[i].ratio
682 * wm9081->fs;
683 if (new_sysclk > 3000000)
684 break;
685 }
686
687 if (i == ARRAY_SIZE(clk_sys_rates))
688 return -EINVAL;
689
690 } else {
691 new_sysclk = 12288000;
692 }
693
694 ret = wm9081_set_fll(component, WM9081_SYSCLK_FLL_MCLK,
695 wm9081->mclk_rate, new_sysclk);
696 if (ret == 0) {
697 wm9081->sysclk_rate = new_sysclk;
698
699 /* Switch SYSCLK over to FLL */
700 fll = 1;
701 } else {
702 wm9081->sysclk_rate = wm9081->mclk_rate;
703 }
704 break;
705
706 default:
707 return -EINVAL;
708 }
709
710 reg = snd_soc_component_read(component, WM9081_CLOCK_CONTROL_1);
711 if (mclkdiv)
712 reg |= WM9081_MCLKDIV2;
713 else
714 reg &= ~WM9081_MCLKDIV2;
715 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_1, reg);
716
717 reg = snd_soc_component_read(component, WM9081_CLOCK_CONTROL_3);
718 if (fll)
719 reg |= WM9081_CLK_SRC_SEL;
720 else
721 reg &= ~WM9081_CLK_SRC_SEL;
722 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_3, reg);
723
724 dev_dbg(component->dev, "CLK_SYS is %dHz\n", wm9081->sysclk_rate);
725
726 return ret;
727 }
728
clk_sys_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)729 static int clk_sys_event(struct snd_soc_dapm_widget *w,
730 struct snd_kcontrol *kcontrol, int event)
731 {
732 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
733 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component);
734
735 /* This should be done on init() for bypass paths */
736 switch (wm9081->sysclk_source) {
737 case WM9081_SYSCLK_MCLK:
738 dev_dbg(component->dev, "Using %dHz MCLK\n", wm9081->mclk_rate);
739 break;
740 case WM9081_SYSCLK_FLL_MCLK:
741 dev_dbg(component->dev, "Using %dHz MCLK with FLL\n",
742 wm9081->mclk_rate);
743 break;
744 default:
745 dev_err(component->dev, "System clock not configured\n");
746 return -EINVAL;
747 }
748
749 switch (event) {
750 case SND_SOC_DAPM_PRE_PMU:
751 configure_clock(component);
752 break;
753
754 case SND_SOC_DAPM_POST_PMD:
755 /* Disable the FLL if it's running */
756 wm9081_set_fll(component, 0, 0, 0);
757 break;
758 }
759
760 return 0;
761 }
762
763 static const struct snd_soc_dapm_widget wm9081_dapm_widgets[] = {
764 SND_SOC_DAPM_INPUT("IN1"),
765 SND_SOC_DAPM_INPUT("IN2"),
766
767 SND_SOC_DAPM_DAC("DAC", NULL, WM9081_POWER_MANAGEMENT, 0, 0),
768
769 SND_SOC_DAPM_MIXER_NAMED_CTL("Mixer", SND_SOC_NOPM, 0, 0,
770 mixer, ARRAY_SIZE(mixer)),
771
772 SND_SOC_DAPM_PGA("LINEOUT PGA", WM9081_POWER_MANAGEMENT, 4, 0, NULL, 0),
773
774 SND_SOC_DAPM_PGA("Speaker PGA", WM9081_POWER_MANAGEMENT, 2, 0, NULL, 0),
775 SND_SOC_DAPM_OUT_DRV("Speaker", WM9081_POWER_MANAGEMENT, 1, 0, NULL, 0),
776
777 SND_SOC_DAPM_OUTPUT("LINEOUT"),
778 SND_SOC_DAPM_OUTPUT("SPKN"),
779 SND_SOC_DAPM_OUTPUT("SPKP"),
780
781 SND_SOC_DAPM_SUPPLY("CLK_SYS", WM9081_CLOCK_CONTROL_3, 0, 0, clk_sys_event,
782 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
783 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM9081_CLOCK_CONTROL_3, 1, 0, NULL, 0),
784 SND_SOC_DAPM_SUPPLY("TOCLK", WM9081_CLOCK_CONTROL_3, 2, 0, NULL, 0),
785 SND_SOC_DAPM_SUPPLY("TSENSE", WM9081_POWER_MANAGEMENT, 7, 0, NULL, 0),
786 };
787
788
789 static const struct snd_soc_dapm_route wm9081_audio_paths[] = {
790 { "DAC", NULL, "CLK_SYS" },
791 { "DAC", NULL, "CLK_DSP" },
792 { "DAC", NULL, "AIF" },
793
794 { "Mixer", "IN1 Switch", "IN1" },
795 { "Mixer", "IN2 Switch", "IN2" },
796 { "Mixer", "Playback Switch", "DAC" },
797
798 { "LINEOUT PGA", NULL, "Mixer" },
799 { "LINEOUT PGA", NULL, "TOCLK" },
800 { "LINEOUT PGA", NULL, "CLK_SYS" },
801
802 { "LINEOUT", NULL, "LINEOUT PGA" },
803
804 { "Speaker PGA", NULL, "Mixer" },
805 { "Speaker PGA", NULL, "TOCLK" },
806 { "Speaker PGA", NULL, "CLK_SYS" },
807
808 { "Speaker", NULL, "Speaker PGA" },
809 { "Speaker", NULL, "TSENSE" },
810
811 { "SPKN", NULL, "Speaker" },
812 { "SPKP", NULL, "Speaker" },
813 };
814
wm9081_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)815 static int wm9081_set_bias_level(struct snd_soc_component *component,
816 enum snd_soc_bias_level level)
817 {
818 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component);
819
820 switch (level) {
821 case SND_SOC_BIAS_ON:
822 break;
823
824 case SND_SOC_BIAS_PREPARE:
825 /* VMID=2*40k */
826 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL,
827 WM9081_VMID_SEL_MASK, 0x2);
828
829 /* Normal bias current */
830 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1,
831 WM9081_STBY_BIAS_ENA, 0);
832 break;
833
834 case SND_SOC_BIAS_STANDBY:
835 /* Initial cold start */
836 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
837 regcache_cache_only(wm9081->regmap, false);
838 regcache_sync(wm9081->regmap);
839
840 /* Disable LINEOUT discharge */
841 snd_soc_component_update_bits(component, WM9081_ANTI_POP_CONTROL,
842 WM9081_LINEOUT_DISCH, 0);
843
844 /* Select startup bias source */
845 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1,
846 WM9081_BIAS_SRC | WM9081_BIAS_ENA,
847 WM9081_BIAS_SRC | WM9081_BIAS_ENA);
848
849 /* VMID 2*4k; Soft VMID ramp enable */
850 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL,
851 WM9081_VMID_RAMP |
852 WM9081_VMID_SEL_MASK,
853 WM9081_VMID_RAMP | 0x6);
854
855 mdelay(100);
856
857 /* Normal bias enable & soft start off */
858 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL,
859 WM9081_VMID_RAMP, 0);
860
861 /* Standard bias source */
862 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1,
863 WM9081_BIAS_SRC, 0);
864 }
865
866 /* VMID 2*240k */
867 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL,
868 WM9081_VMID_SEL_MASK, 0x04);
869
870 /* Standby bias current on */
871 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1,
872 WM9081_STBY_BIAS_ENA,
873 WM9081_STBY_BIAS_ENA);
874 break;
875
876 case SND_SOC_BIAS_OFF:
877 /* Startup bias source and disable bias */
878 snd_soc_component_update_bits(component, WM9081_BIAS_CONTROL_1,
879 WM9081_BIAS_SRC | WM9081_BIAS_ENA,
880 WM9081_BIAS_SRC);
881
882 /* Disable VMID with soft ramping */
883 snd_soc_component_update_bits(component, WM9081_VMID_CONTROL,
884 WM9081_VMID_RAMP | WM9081_VMID_SEL_MASK,
885 WM9081_VMID_RAMP);
886
887 /* Actively discharge LINEOUT */
888 snd_soc_component_update_bits(component, WM9081_ANTI_POP_CONTROL,
889 WM9081_LINEOUT_DISCH,
890 WM9081_LINEOUT_DISCH);
891
892 regcache_cache_only(wm9081->regmap, true);
893 break;
894 }
895
896 return 0;
897 }
898
wm9081_set_dai_fmt(struct snd_soc_dai * dai,unsigned int fmt)899 static int wm9081_set_dai_fmt(struct snd_soc_dai *dai,
900 unsigned int fmt)
901 {
902 struct snd_soc_component *component = dai->component;
903 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component);
904 unsigned int aif2 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_2);
905
906 aif2 &= ~(WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV |
907 WM9081_BCLK_DIR | WM9081_LRCLK_DIR | WM9081_AIF_FMT_MASK);
908
909 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
910 case SND_SOC_DAIFMT_CBS_CFS:
911 wm9081->master = 0;
912 break;
913 case SND_SOC_DAIFMT_CBS_CFM:
914 aif2 |= WM9081_LRCLK_DIR;
915 wm9081->master = 1;
916 break;
917 case SND_SOC_DAIFMT_CBM_CFS:
918 aif2 |= WM9081_BCLK_DIR;
919 wm9081->master = 1;
920 break;
921 case SND_SOC_DAIFMT_CBM_CFM:
922 aif2 |= WM9081_LRCLK_DIR | WM9081_BCLK_DIR;
923 wm9081->master = 1;
924 break;
925 default:
926 return -EINVAL;
927 }
928
929 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
930 case SND_SOC_DAIFMT_DSP_B:
931 aif2 |= WM9081_AIF_LRCLK_INV;
932 fallthrough;
933 case SND_SOC_DAIFMT_DSP_A:
934 aif2 |= 0x3;
935 break;
936 case SND_SOC_DAIFMT_I2S:
937 aif2 |= 0x2;
938 break;
939 case SND_SOC_DAIFMT_RIGHT_J:
940 break;
941 case SND_SOC_DAIFMT_LEFT_J:
942 aif2 |= 0x1;
943 break;
944 default:
945 return -EINVAL;
946 }
947
948 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
949 case SND_SOC_DAIFMT_DSP_A:
950 case SND_SOC_DAIFMT_DSP_B:
951 /* frame inversion not valid for DSP modes */
952 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
953 case SND_SOC_DAIFMT_NB_NF:
954 break;
955 case SND_SOC_DAIFMT_IB_NF:
956 aif2 |= WM9081_AIF_BCLK_INV;
957 break;
958 default:
959 return -EINVAL;
960 }
961 break;
962
963 case SND_SOC_DAIFMT_I2S:
964 case SND_SOC_DAIFMT_RIGHT_J:
965 case SND_SOC_DAIFMT_LEFT_J:
966 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
967 case SND_SOC_DAIFMT_NB_NF:
968 break;
969 case SND_SOC_DAIFMT_IB_IF:
970 aif2 |= WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV;
971 break;
972 case SND_SOC_DAIFMT_IB_NF:
973 aif2 |= WM9081_AIF_BCLK_INV;
974 break;
975 case SND_SOC_DAIFMT_NB_IF:
976 aif2 |= WM9081_AIF_LRCLK_INV;
977 break;
978 default:
979 return -EINVAL;
980 }
981 break;
982 default:
983 return -EINVAL;
984 }
985
986 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_2, aif2);
987
988 return 0;
989 }
990
wm9081_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)991 static int wm9081_hw_params(struct snd_pcm_substream *substream,
992 struct snd_pcm_hw_params *params,
993 struct snd_soc_dai *dai)
994 {
995 struct snd_soc_component *component = dai->component;
996 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component);
997 int ret, i, best, best_val, cur_val;
998 unsigned int clk_ctrl2, aif1, aif2, aif3, aif4;
999
1000 clk_ctrl2 = snd_soc_component_read(component, WM9081_CLOCK_CONTROL_2);
1001 clk_ctrl2 &= ~(WM9081_CLK_SYS_RATE_MASK | WM9081_SAMPLE_RATE_MASK);
1002
1003 aif1 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_1);
1004
1005 aif2 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_2);
1006 aif2 &= ~WM9081_AIF_WL_MASK;
1007
1008 aif3 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_3);
1009 aif3 &= ~WM9081_BCLK_DIV_MASK;
1010
1011 aif4 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_4);
1012 aif4 &= ~WM9081_LRCLK_RATE_MASK;
1013
1014 wm9081->fs = params_rate(params);
1015
1016 if (wm9081->tdm_width) {
1017 /* If TDM is set up then that fixes our BCLK. */
1018 int slots = ((aif1 & WM9081_AIFDAC_TDM_MODE_MASK) >>
1019 WM9081_AIFDAC_TDM_MODE_SHIFT) + 1;
1020
1021 wm9081->bclk = wm9081->fs * wm9081->tdm_width * slots;
1022 } else {
1023 /* Otherwise work out a BCLK from the sample size */
1024 wm9081->bclk = 2 * wm9081->fs;
1025
1026 switch (params_width(params)) {
1027 case 16:
1028 wm9081->bclk *= 16;
1029 break;
1030 case 20:
1031 wm9081->bclk *= 20;
1032 aif2 |= 0x4;
1033 break;
1034 case 24:
1035 wm9081->bclk *= 24;
1036 aif2 |= 0x8;
1037 break;
1038 case 32:
1039 wm9081->bclk *= 32;
1040 aif2 |= 0xc;
1041 break;
1042 default:
1043 return -EINVAL;
1044 }
1045 }
1046
1047 dev_dbg(component->dev, "Target BCLK is %dHz\n", wm9081->bclk);
1048
1049 ret = configure_clock(component);
1050 if (ret != 0)
1051 return ret;
1052
1053 /* Select nearest CLK_SYS_RATE */
1054 best = 0;
1055 best_val = abs((wm9081->sysclk_rate / clk_sys_rates[0].ratio)
1056 - wm9081->fs);
1057 for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
1058 cur_val = abs((wm9081->sysclk_rate /
1059 clk_sys_rates[i].ratio) - wm9081->fs);
1060 if (cur_val < best_val) {
1061 best = i;
1062 best_val = cur_val;
1063 }
1064 }
1065 dev_dbg(component->dev, "Selected CLK_SYS_RATIO of %d\n",
1066 clk_sys_rates[best].ratio);
1067 clk_ctrl2 |= (clk_sys_rates[best].clk_sys_rate
1068 << WM9081_CLK_SYS_RATE_SHIFT);
1069
1070 /* SAMPLE_RATE */
1071 best = 0;
1072 best_val = abs(wm9081->fs - sample_rates[0].rate);
1073 for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
1074 /* Closest match */
1075 cur_val = abs(wm9081->fs - sample_rates[i].rate);
1076 if (cur_val < best_val) {
1077 best = i;
1078 best_val = cur_val;
1079 }
1080 }
1081 dev_dbg(component->dev, "Selected SAMPLE_RATE of %dHz\n",
1082 sample_rates[best].rate);
1083 clk_ctrl2 |= (sample_rates[best].sample_rate
1084 << WM9081_SAMPLE_RATE_SHIFT);
1085
1086 /* BCLK_DIV */
1087 best = 0;
1088 best_val = INT_MAX;
1089 for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
1090 cur_val = ((wm9081->sysclk_rate * 10) / bclk_divs[i].div)
1091 - wm9081->bclk;
1092 if (cur_val < 0) /* Table is sorted */
1093 break;
1094 if (cur_val < best_val) {
1095 best = i;
1096 best_val = cur_val;
1097 }
1098 }
1099 wm9081->bclk = (wm9081->sysclk_rate * 10) / bclk_divs[best].div;
1100 dev_dbg(component->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
1101 bclk_divs[best].div, wm9081->bclk);
1102 aif3 |= bclk_divs[best].bclk_div;
1103
1104 /* LRCLK is a simple fraction of BCLK */
1105 dev_dbg(component->dev, "LRCLK_RATE is %d\n", wm9081->bclk / wm9081->fs);
1106 aif4 |= wm9081->bclk / wm9081->fs;
1107
1108 /* Apply a ReTune Mobile configuration if it's in use */
1109 if (wm9081->pdata.num_retune_configs) {
1110 struct wm9081_pdata *pdata = &wm9081->pdata;
1111 struct wm9081_retune_mobile_setting *s;
1112 int eq1;
1113
1114 best = 0;
1115 best_val = abs(pdata->retune_configs[0].rate - wm9081->fs);
1116 for (i = 0; i < pdata->num_retune_configs; i++) {
1117 cur_val = abs(pdata->retune_configs[i].rate -
1118 wm9081->fs);
1119 if (cur_val < best_val) {
1120 best_val = cur_val;
1121 best = i;
1122 }
1123 }
1124 s = &pdata->retune_configs[best];
1125
1126 dev_dbg(component->dev, "ReTune Mobile %s tuned for %dHz\n",
1127 s->name, s->rate);
1128
1129 /* If the EQ is enabled then disable it while we write out */
1130 eq1 = snd_soc_component_read(component, WM9081_EQ_1) & WM9081_EQ_ENA;
1131 if (eq1 & WM9081_EQ_ENA)
1132 snd_soc_component_write(component, WM9081_EQ_1, 0);
1133
1134 /* Write out the other values */
1135 for (i = 1; i < ARRAY_SIZE(s->config); i++)
1136 snd_soc_component_write(component, WM9081_EQ_1 + i, s->config[i]);
1137
1138 eq1 |= (s->config[0] & ~WM9081_EQ_ENA);
1139 snd_soc_component_write(component, WM9081_EQ_1, eq1);
1140 }
1141
1142 snd_soc_component_write(component, WM9081_CLOCK_CONTROL_2, clk_ctrl2);
1143 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_2, aif2);
1144 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_3, aif3);
1145 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_4, aif4);
1146
1147 return 0;
1148 }
1149
wm9081_mute(struct snd_soc_dai * codec_dai,int mute,int direction)1150 static int wm9081_mute(struct snd_soc_dai *codec_dai, int mute, int direction)
1151 {
1152 struct snd_soc_component *component = codec_dai->component;
1153 unsigned int reg;
1154
1155 reg = snd_soc_component_read(component, WM9081_DAC_DIGITAL_2);
1156
1157 if (mute)
1158 reg |= WM9081_DAC_MUTE;
1159 else
1160 reg &= ~WM9081_DAC_MUTE;
1161
1162 snd_soc_component_write(component, WM9081_DAC_DIGITAL_2, reg);
1163
1164 return 0;
1165 }
1166
wm9081_set_sysclk(struct snd_soc_component * component,int clk_id,int source,unsigned int freq,int dir)1167 static int wm9081_set_sysclk(struct snd_soc_component *component, int clk_id,
1168 int source, unsigned int freq, int dir)
1169 {
1170 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component);
1171
1172 switch (clk_id) {
1173 case WM9081_SYSCLK_MCLK:
1174 case WM9081_SYSCLK_FLL_MCLK:
1175 wm9081->sysclk_source = clk_id;
1176 wm9081->mclk_rate = freq;
1177 break;
1178
1179 default:
1180 return -EINVAL;
1181 }
1182
1183 return 0;
1184 }
1185
wm9081_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)1186 static int wm9081_set_tdm_slot(struct snd_soc_dai *dai,
1187 unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
1188 {
1189 struct snd_soc_component *component = dai->component;
1190 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component);
1191 unsigned int aif1 = snd_soc_component_read(component, WM9081_AUDIO_INTERFACE_1);
1192
1193 aif1 &= ~(WM9081_AIFDAC_TDM_SLOT_MASK | WM9081_AIFDAC_TDM_MODE_MASK);
1194
1195 if (slots < 0 || slots > 4)
1196 return -EINVAL;
1197
1198 wm9081->tdm_width = slot_width;
1199
1200 if (slots == 0)
1201 slots = 1;
1202
1203 aif1 |= (slots - 1) << WM9081_AIFDAC_TDM_MODE_SHIFT;
1204
1205 switch (rx_mask) {
1206 case 1:
1207 break;
1208 case 2:
1209 aif1 |= 0x10;
1210 break;
1211 case 4:
1212 aif1 |= 0x20;
1213 break;
1214 case 8:
1215 aif1 |= 0x30;
1216 break;
1217 default:
1218 return -EINVAL;
1219 }
1220
1221 snd_soc_component_write(component, WM9081_AUDIO_INTERFACE_1, aif1);
1222
1223 return 0;
1224 }
1225
1226 #define WM9081_RATES SNDRV_PCM_RATE_8000_96000
1227
1228 #define WM9081_FORMATS \
1229 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
1230 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
1231
1232 static const struct snd_soc_dai_ops wm9081_dai_ops = {
1233 .hw_params = wm9081_hw_params,
1234 .set_fmt = wm9081_set_dai_fmt,
1235 .mute_stream = wm9081_mute,
1236 .set_tdm_slot = wm9081_set_tdm_slot,
1237 .no_capture_mute = 1,
1238 };
1239
1240 /* We report two channels because the CODEC processes a stereo signal, even
1241 * though it is only capable of handling a mono output.
1242 */
1243 static struct snd_soc_dai_driver wm9081_dai = {
1244 .name = "wm9081-hifi",
1245 .playback = {
1246 .stream_name = "AIF",
1247 .channels_min = 1,
1248 .channels_max = 2,
1249 .rates = WM9081_RATES,
1250 .formats = WM9081_FORMATS,
1251 },
1252 .ops = &wm9081_dai_ops,
1253 };
1254
wm9081_probe(struct snd_soc_component * component)1255 static int wm9081_probe(struct snd_soc_component *component)
1256 {
1257 struct wm9081_priv *wm9081 = snd_soc_component_get_drvdata(component);
1258
1259 /* Enable zero cross by default */
1260 snd_soc_component_update_bits(component, WM9081_ANALOGUE_LINEOUT,
1261 WM9081_LINEOUTZC, WM9081_LINEOUTZC);
1262 snd_soc_component_update_bits(component, WM9081_ANALOGUE_SPEAKER_PGA,
1263 WM9081_SPKPGAZC, WM9081_SPKPGAZC);
1264
1265 if (!wm9081->pdata.num_retune_configs) {
1266 dev_dbg(component->dev,
1267 "No ReTune Mobile data, using normal EQ\n");
1268 snd_soc_add_component_controls(component, wm9081_eq_controls,
1269 ARRAY_SIZE(wm9081_eq_controls));
1270 }
1271
1272 return 0;
1273 }
1274
1275 static const struct snd_soc_component_driver soc_component_dev_wm9081 = {
1276 .probe = wm9081_probe,
1277 .set_sysclk = wm9081_set_sysclk,
1278 .set_bias_level = wm9081_set_bias_level,
1279 .controls = wm9081_snd_controls,
1280 .num_controls = ARRAY_SIZE(wm9081_snd_controls),
1281 .dapm_widgets = wm9081_dapm_widgets,
1282 .num_dapm_widgets = ARRAY_SIZE(wm9081_dapm_widgets),
1283 .dapm_routes = wm9081_audio_paths,
1284 .num_dapm_routes = ARRAY_SIZE(wm9081_audio_paths),
1285 .use_pmdown_time = 1,
1286 .endianness = 1,
1287 };
1288
1289 static const struct regmap_config wm9081_regmap = {
1290 .reg_bits = 8,
1291 .val_bits = 16,
1292
1293 .max_register = WM9081_MAX_REGISTER,
1294 .reg_defaults = wm9081_reg,
1295 .num_reg_defaults = ARRAY_SIZE(wm9081_reg),
1296 .volatile_reg = wm9081_volatile_register,
1297 .readable_reg = wm9081_readable_register,
1298 .cache_type = REGCACHE_MAPLE,
1299 };
1300
wm9081_i2c_probe(struct i2c_client * i2c)1301 static int wm9081_i2c_probe(struct i2c_client *i2c)
1302 {
1303 struct wm9081_priv *wm9081;
1304 unsigned int reg;
1305 int ret;
1306
1307 wm9081 = devm_kzalloc(&i2c->dev, sizeof(struct wm9081_priv),
1308 GFP_KERNEL);
1309 if (wm9081 == NULL)
1310 return -ENOMEM;
1311
1312 i2c_set_clientdata(i2c, wm9081);
1313
1314 wm9081->regmap = devm_regmap_init_i2c(i2c, &wm9081_regmap);
1315 if (IS_ERR(wm9081->regmap)) {
1316 ret = PTR_ERR(wm9081->regmap);
1317 dev_err(&i2c->dev, "regmap_init() failed: %d\n", ret);
1318 return ret;
1319 }
1320
1321 ret = regmap_read(wm9081->regmap, WM9081_SOFTWARE_RESET, ®);
1322 if (ret != 0) {
1323 dev_err(&i2c->dev, "Failed to read chip ID: %d\n", ret);
1324 return ret;
1325 }
1326 if (reg != 0x9081) {
1327 dev_err(&i2c->dev, "Device is not a WM9081: ID=0x%x\n", reg);
1328 return -EINVAL;
1329 }
1330
1331 ret = wm9081_reset(wm9081->regmap);
1332 if (ret < 0) {
1333 dev_err(&i2c->dev, "Failed to issue reset\n");
1334 return ret;
1335 }
1336
1337 if (dev_get_platdata(&i2c->dev))
1338 memcpy(&wm9081->pdata, dev_get_platdata(&i2c->dev),
1339 sizeof(wm9081->pdata));
1340
1341 reg = 0;
1342 if (wm9081->pdata.irq_high)
1343 reg |= WM9081_IRQ_POL;
1344 if (!wm9081->pdata.irq_cmos)
1345 reg |= WM9081_IRQ_OP_CTRL;
1346 regmap_update_bits(wm9081->regmap, WM9081_INTERRUPT_CONTROL,
1347 WM9081_IRQ_POL | WM9081_IRQ_OP_CTRL, reg);
1348
1349 regcache_cache_only(wm9081->regmap, true);
1350
1351 ret = devm_snd_soc_register_component(&i2c->dev,
1352 &soc_component_dev_wm9081, &wm9081_dai, 1);
1353 if (ret < 0)
1354 return ret;
1355
1356 return 0;
1357 }
1358
wm9081_i2c_remove(struct i2c_client * client)1359 static void wm9081_i2c_remove(struct i2c_client *client)
1360 {}
1361
1362 static const struct i2c_device_id wm9081_i2c_id[] = {
1363 { "wm9081" },
1364 { }
1365 };
1366 MODULE_DEVICE_TABLE(i2c, wm9081_i2c_id);
1367
1368 static struct i2c_driver wm9081_i2c_driver = {
1369 .driver = {
1370 .name = "wm9081",
1371 },
1372 .probe = wm9081_i2c_probe,
1373 .remove = wm9081_i2c_remove,
1374 .id_table = wm9081_i2c_id,
1375 };
1376
1377 module_i2c_driver(wm9081_i2c_driver);
1378
1379 MODULE_DESCRIPTION("ASoC WM9081 driver");
1380 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1381 MODULE_LICENSE("GPL");
1382