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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * wm8974.c -- WM8974 ALSA Soc Audio driver
4 *
5 * Copyright 2006-2009 Wolfson Microelectronics PLC.
6 *
7 * Author: Liam Girdwood <Liam.Girdwood@wolfsonmicro.com>
8 */
9
10#include <linux/module.h>
11#include <linux/kernel.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/slab.h>
18#include <sound/core.h>
19#include <sound/pcm.h>
20#include <sound/pcm_params.h>
21#include <sound/soc.h>
22#include <sound/initval.h>
23#include <sound/tlv.h>
24
25#include "wm8974.h"
26
27struct wm8974_priv {
28 unsigned int mclk;
29 unsigned int fs;
30};
31
32static const struct reg_default wm8974_reg_defaults[] = {
33 { 0, 0x0000 }, { 1, 0x0000 }, { 2, 0x0000 }, { 3, 0x0000 },
34 { 4, 0x0050 }, { 5, 0x0000 }, { 6, 0x0140 }, { 7, 0x0000 },
35 { 8, 0x0000 }, { 9, 0x0000 }, { 10, 0x0000 }, { 11, 0x00ff },
36 { 12, 0x0000 }, { 13, 0x0000 }, { 14, 0x0100 }, { 15, 0x00ff },
37 { 16, 0x0000 }, { 17, 0x0000 }, { 18, 0x012c }, { 19, 0x002c },
38 { 20, 0x002c }, { 21, 0x002c }, { 22, 0x002c }, { 23, 0x0000 },
39 { 24, 0x0032 }, { 25, 0x0000 }, { 26, 0x0000 }, { 27, 0x0000 },
40 { 28, 0x0000 }, { 29, 0x0000 }, { 30, 0x0000 }, { 31, 0x0000 },
41 { 32, 0x0038 }, { 33, 0x000b }, { 34, 0x0032 }, { 35, 0x0000 },
42 { 36, 0x0008 }, { 37, 0x000c }, { 38, 0x0093 }, { 39, 0x00e9 },
43 { 40, 0x0000 }, { 41, 0x0000 }, { 42, 0x0000 }, { 43, 0x0000 },
44 { 44, 0x0003 }, { 45, 0x0010 }, { 46, 0x0000 }, { 47, 0x0000 },
45 { 48, 0x0000 }, { 49, 0x0002 }, { 50, 0x0000 }, { 51, 0x0000 },
46 { 52, 0x0000 }, { 53, 0x0000 }, { 54, 0x0039 }, { 55, 0x0000 },
47 { 56, 0x0000 },
48};
49
50#define WM8974_POWER1_BIASEN 0x08
51#define WM8974_POWER1_BUFIOEN 0x04
52
53#define wm8974_reset(c) snd_soc_component_write(c, WM8974_RESET, 0)
54
55static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" };
56static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" };
57static const char *wm8974_eqmode[] = {"Capture", "Playback" };
58static const char *wm8974_bw[] = {"Narrow", "Wide" };
59static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" };
60static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" };
61static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" };
62static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" };
63static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" };
64static const char *wm8974_alc[] = {"ALC", "Limiter" };
65
66static const struct soc_enum wm8974_enum[] = {
67 SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */
68 SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */
69 SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp),
70 SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode),
71
72 SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1),
73 SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw),
74 SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2),
75 SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw),
76
77 SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3),
78 SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw),
79 SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4),
80 SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw),
81
82 SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5),
83 SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc),
84};
85
86static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" };
87
88static SOC_ENUM_SINGLE_DECL(wm8974_auxmode,
89 WM8974_INPUT, 3, wm8974_auxmode_text);
90
91static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
92static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
93static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
94static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
95
96static const struct snd_kcontrol_new wm8974_snd_controls[] = {
97
98SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0),
99
100SOC_ENUM("DAC Companding", wm8974_enum[1]),
101SOC_ENUM("ADC Companding", wm8974_enum[0]),
102
103SOC_ENUM("Playback De-emphasis", wm8974_enum[2]),
104SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0),
105
106SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv),
107
108SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0),
109SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0),
110SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0),
111
112SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv),
113
114SOC_ENUM("Equaliser Function", wm8974_enum[3]),
115SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]),
116SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv),
117
118SOC_ENUM("Equaliser EQ2 Bandwidth", wm8974_enum[5]),
119SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]),
120SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv),
121
122SOC_ENUM("Equaliser EQ3 Bandwidth", wm8974_enum[7]),
123SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]),
124SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv),
125
126SOC_ENUM("Equaliser EQ4 Bandwidth", wm8974_enum[9]),
127SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]),
128SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv),
129
130SOC_ENUM("Equaliser EQ5 Bandwidth", wm8974_enum[11]),
131SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]),
132SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv),
133
134SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0),
135SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0),
136SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0),
137
138SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0),
139SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0),
140
141SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0),
142SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0),
143SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0),
144
145SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0),
146SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0),
147SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0),
148
149SOC_ENUM("ALC Capture Mode", wm8974_enum[13]),
150SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0),
151SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0),
152
153SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0),
154SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0),
155
156SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0),
157SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv),
158
159SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0),
160SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1),
161SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv),
162
163SOC_ENUM("Aux Mode", wm8974_auxmode),
164
165SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0),
166SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1),
167
168/* DAC / ADC oversampling */
169SOC_SINGLE("DAC 128x Oversampling Switch", WM8974_DAC, 8, 1, 0),
170SOC_SINGLE("ADC 128x Oversampling Switch", WM8974_ADC, 8, 1, 0),
171};
172
173/* Speaker Output Mixer */
174static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = {
175SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0),
176SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0),
177SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 0),
178};
179
180/* Mono Output Mixer */
181static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = {
182SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0),
183SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0),
184SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0),
185};
186
187/* Boost mixer */
188static const struct snd_kcontrol_new wm8974_boost_mixer[] = {
189SOC_DAPM_SINGLE("PGA Switch", WM8974_INPPGA, 6, 1, 1),
190};
191
192/* Input PGA */
193static const struct snd_kcontrol_new wm8974_inpga[] = {
194SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0),
195SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0),
196SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0),
197};
198
199static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = {
200SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0,
201 &wm8974_speaker_mixer_controls[0],
202 ARRAY_SIZE(wm8974_speaker_mixer_controls)),
203SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0,
204 &wm8974_mono_mixer_controls[0],
205 ARRAY_SIZE(wm8974_mono_mixer_controls)),
206SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0),
207SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0),
208SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0),
209SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0),
210SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0),
211SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0),
212
213SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga,
214 ARRAY_SIZE(wm8974_inpga)),
215SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0,
216 wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)),
217
218SND_SOC_DAPM_SUPPLY("Mic Bias", WM8974_POWER1, 4, 0, NULL, 0),
219
220SND_SOC_DAPM_INPUT("MICN"),
221SND_SOC_DAPM_INPUT("MICP"),
222SND_SOC_DAPM_INPUT("AUX"),
223SND_SOC_DAPM_OUTPUT("MONOOUT"),
224SND_SOC_DAPM_OUTPUT("SPKOUTP"),
225SND_SOC_DAPM_OUTPUT("SPKOUTN"),
226};
227
228static const struct snd_soc_dapm_route wm8974_dapm_routes[] = {
229 /* Mono output mixer */
230 {"Mono Mixer", "PCM Playback Switch", "DAC"},
231 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
232 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
233
234 /* Speaker output mixer */
235 {"Speaker Mixer", "PCM Playback Switch", "DAC"},
236 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
237 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
238
239 /* Outputs */
240 {"Mono Out", NULL, "Mono Mixer"},
241 {"MONOOUT", NULL, "Mono Out"},
242 {"SpkN Out", NULL, "Speaker Mixer"},
243 {"SpkP Out", NULL, "Speaker Mixer"},
244 {"SPKOUTN", NULL, "SpkN Out"},
245 {"SPKOUTP", NULL, "SpkP Out"},
246
247 /* Boost Mixer */
248 {"ADC", NULL, "Boost Mixer"},
249 {"Boost Mixer", NULL, "Aux Input"},
250 {"Boost Mixer", "PGA Switch", "Input PGA"},
251 {"Boost Mixer", NULL, "MICP"},
252
253 /* Input PGA */
254 {"Input PGA", "Aux Switch", "Aux Input"},
255 {"Input PGA", "MicN Switch", "MICN"},
256 {"Input PGA", "MicP Switch", "MICP"},
257
258 /* Inputs */
259 {"Aux Input", NULL, "AUX"},
260};
261
262struct pll_ {
263 unsigned int pre_div:1;
264 unsigned int n:4;
265 unsigned int k;
266};
267
268/* The size in bits of the pll divide multiplied by 10
269 * to allow rounding later */
270#define FIXED_PLL_SIZE ((1 << 24) * 10)
271
272static void pll_factors(struct pll_ *pll_div,
273 unsigned int target, unsigned int source)
274{
275 unsigned long long Kpart;
276 unsigned int K, Ndiv, Nmod;
277
278 /* There is a fixed divide by 4 in the output path */
279 target *= 4;
280
281 Ndiv = target / source;
282 if (Ndiv < 6) {
283 source /= 2;
284 pll_div->pre_div = 1;
285 Ndiv = target / source;
286 } else
287 pll_div->pre_div = 0;
288
289 if ((Ndiv < 6) || (Ndiv > 12))
290 printk(KERN_WARNING
291 "WM8974 N value %u outwith recommended range!\n",
292 Ndiv);
293
294 pll_div->n = Ndiv;
295 Nmod = target % source;
296 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
297
298 do_div(Kpart, source);
299
300 K = Kpart & 0xFFFFFFFF;
301
302 /* Check if we need to round */
303 if ((K % 10) >= 5)
304 K += 5;
305
306 /* Move down to proper range now rounding is done */
307 K /= 10;
308
309 pll_div->k = K;
310}
311
312static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
313 int source, unsigned int freq_in, unsigned int freq_out)
314{
315 struct snd_soc_component *component = codec_dai->component;
316 struct pll_ pll_div;
317 u16 reg;
318
319 if (freq_in == 0 || freq_out == 0) {
320 /* Clock CODEC directly from MCLK */
321 reg = snd_soc_component_read(component, WM8974_CLOCK);
322 snd_soc_component_write(component, WM8974_CLOCK, reg & 0x0ff);
323
324 /* Turn off PLL */
325 reg = snd_soc_component_read(component, WM8974_POWER1);
326 snd_soc_component_write(component, WM8974_POWER1, reg & 0x1df);
327 return 0;
328 }
329
330 pll_factors(&pll_div, freq_out, freq_in);
331
332 snd_soc_component_write(component, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
333 snd_soc_component_write(component, WM8974_PLLK1, pll_div.k >> 18);
334 snd_soc_component_write(component, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
335 snd_soc_component_write(component, WM8974_PLLK3, pll_div.k & 0x1ff);
336 reg = snd_soc_component_read(component, WM8974_POWER1);
337 snd_soc_component_write(component, WM8974_POWER1, reg | 0x020);
338
339 /* Run CODEC from PLL instead of MCLK */
340 reg = snd_soc_component_read(component, WM8974_CLOCK);
341 snd_soc_component_write(component, WM8974_CLOCK, reg | 0x100);
342
343 return 0;
344}
345
346/*
347 * Configure WM8974 clock dividers.
348 */
349static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
350 int div_id, int div)
351{
352 struct snd_soc_component *component = codec_dai->component;
353 u16 reg;
354
355 switch (div_id) {
356 case WM8974_OPCLKDIV:
357 reg = snd_soc_component_read(component, WM8974_GPIO) & 0x1cf;
358 snd_soc_component_write(component, WM8974_GPIO, reg | div);
359 break;
360 case WM8974_MCLKDIV:
361 reg = snd_soc_component_read(component, WM8974_CLOCK) & 0x11f;
362 snd_soc_component_write(component, WM8974_CLOCK, reg | div);
363 break;
364 case WM8974_BCLKDIV:
365 reg = snd_soc_component_read(component, WM8974_CLOCK) & 0x1e3;
366 snd_soc_component_write(component, WM8974_CLOCK, reg | div);
367 break;
368 default:
369 return -EINVAL;
370 }
371
372 return 0;
373}
374
375static unsigned int wm8974_get_mclkdiv(unsigned int f_in, unsigned int f_out,
376 int *mclkdiv)
377{
378 unsigned int ratio = 2 * f_in / f_out;
379
380 if (ratio <= 2) {
381 *mclkdiv = WM8974_MCLKDIV_1;
382 ratio = 2;
383 } else if (ratio == 3) {
384 *mclkdiv = WM8974_MCLKDIV_1_5;
385 } else if (ratio == 4) {
386 *mclkdiv = WM8974_MCLKDIV_2;
387 } else if (ratio <= 6) {
388 *mclkdiv = WM8974_MCLKDIV_3;
389 ratio = 6;
390 } else if (ratio <= 8) {
391 *mclkdiv = WM8974_MCLKDIV_4;
392 ratio = 8;
393 } else if (ratio <= 12) {
394 *mclkdiv = WM8974_MCLKDIV_6;
395 ratio = 12;
396 } else if (ratio <= 16) {
397 *mclkdiv = WM8974_MCLKDIV_8;
398 ratio = 16;
399 } else {
400 *mclkdiv = WM8974_MCLKDIV_12;
401 ratio = 24;
402 }
403
404 return f_out * ratio / 2;
405}
406
407static int wm8974_update_clocks(struct snd_soc_dai *dai)
408{
409 struct snd_soc_component *component = dai->component;
410 struct wm8974_priv *priv = snd_soc_component_get_drvdata(component);
411 unsigned int fs256;
412 unsigned int fpll = 0;
413 unsigned int f;
414 int mclkdiv;
415
416 if (!priv->mclk || !priv->fs)
417 return 0;
418
419 fs256 = 256 * priv->fs;
420
421 f = wm8974_get_mclkdiv(priv->mclk, fs256, &mclkdiv);
422
423 if (f != priv->mclk) {
424 /* The PLL performs best around 90MHz */
425 fpll = wm8974_get_mclkdiv(22500000, fs256, &mclkdiv);
426 }
427
428 wm8974_set_dai_pll(dai, 0, 0, priv->mclk, fpll);
429 wm8974_set_dai_clkdiv(dai, WM8974_MCLKDIV, mclkdiv);
430
431 return 0;
432}
433
434static int wm8974_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
435 unsigned int freq, int dir)
436{
437 struct snd_soc_component *component = dai->component;
438 struct wm8974_priv *priv = snd_soc_component_get_drvdata(component);
439
440 if (dir != SND_SOC_CLOCK_IN)
441 return -EINVAL;
442
443 priv->mclk = freq;
444
445 return wm8974_update_clocks(dai);
446}
447
448static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
449 unsigned int fmt)
450{
451 struct snd_soc_component *component = codec_dai->component;
452 u16 iface = 0;
453 u16 clk = snd_soc_component_read(component, WM8974_CLOCK) & 0x1fe;
454
455 /* set master/slave audio interface */
456 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
457 case SND_SOC_DAIFMT_CBM_CFM:
458 clk |= 0x0001;
459 break;
460 case SND_SOC_DAIFMT_CBS_CFS:
461 break;
462 default:
463 return -EINVAL;
464 }
465
466 /* interface format */
467 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
468 case SND_SOC_DAIFMT_I2S:
469 iface |= 0x0010;
470 break;
471 case SND_SOC_DAIFMT_RIGHT_J:
472 break;
473 case SND_SOC_DAIFMT_LEFT_J:
474 iface |= 0x0008;
475 break;
476 case SND_SOC_DAIFMT_DSP_A:
477 if ((fmt & SND_SOC_DAIFMT_INV_MASK) == SND_SOC_DAIFMT_IB_IF ||
478 (fmt & SND_SOC_DAIFMT_INV_MASK) == SND_SOC_DAIFMT_NB_IF) {
479 return -EINVAL;
480 }
481 iface |= 0x00018;
482 break;
483 default:
484 return -EINVAL;
485 }
486
487 /* clock inversion */
488 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
489 case SND_SOC_DAIFMT_NB_NF:
490 break;
491 case SND_SOC_DAIFMT_IB_IF:
492 iface |= 0x0180;
493 break;
494 case SND_SOC_DAIFMT_IB_NF:
495 iface |= 0x0100;
496 break;
497 case SND_SOC_DAIFMT_NB_IF:
498 iface |= 0x0080;
499 break;
500 default:
501 return -EINVAL;
502 }
503
504 snd_soc_component_write(component, WM8974_IFACE, iface);
505 snd_soc_component_write(component, WM8974_CLOCK, clk);
506 return 0;
507}
508
509static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
510 struct snd_pcm_hw_params *params,
511 struct snd_soc_dai *dai)
512{
513 struct snd_soc_component *component = dai->component;
514 struct wm8974_priv *priv = snd_soc_component_get_drvdata(component);
515 u16 iface = snd_soc_component_read(component, WM8974_IFACE) & 0x19f;
516 u16 adn = snd_soc_component_read(component, WM8974_ADD) & 0x1f1;
517 int err;
518
519 priv->fs = params_rate(params);
520 err = wm8974_update_clocks(dai);
521 if (err)
522 return err;
523
524 /* bit size */
525 switch (params_width(params)) {
526 case 16:
527 break;
528 case 20:
529 iface |= 0x0020;
530 break;
531 case 24:
532 iface |= 0x0040;
533 break;
534 case 32:
535 iface |= 0x0060;
536 break;
537 }
538
539 /* filter coefficient */
540 switch (params_rate(params)) {
541 case 8000:
542 adn |= 0x5 << 1;
543 break;
544 case 11025:
545 adn |= 0x4 << 1;
546 break;
547 case 16000:
548 adn |= 0x3 << 1;
549 break;
550 case 22050:
551 adn |= 0x2 << 1;
552 break;
553 case 32000:
554 adn |= 0x1 << 1;
555 break;
556 case 44100:
557 case 48000:
558 break;
559 }
560
561 snd_soc_component_write(component, WM8974_IFACE, iface);
562 snd_soc_component_write(component, WM8974_ADD, adn);
563 return 0;
564}
565
566static int wm8974_mute(struct snd_soc_dai *dai, int mute, int direction)
567{
568 struct snd_soc_component *component = dai->component;
569 u16 mute_reg = snd_soc_component_read(component, WM8974_DAC) & 0xffbf;
570
571 if (mute)
572 snd_soc_component_write(component, WM8974_DAC, mute_reg | 0x40);
573 else
574 snd_soc_component_write(component, WM8974_DAC, mute_reg);
575 return 0;
576}
577
578/* liam need to make this lower power with dapm */
579static int wm8974_set_bias_level(struct snd_soc_component *component,
580 enum snd_soc_bias_level level)
581{
582 u16 power1 = snd_soc_component_read(component, WM8974_POWER1) & ~0x3;
583
584 switch (level) {
585 case SND_SOC_BIAS_ON:
586 case SND_SOC_BIAS_PREPARE:
587 power1 |= 0x1; /* VMID 50k */
588 snd_soc_component_write(component, WM8974_POWER1, power1);
589 break;
590
591 case SND_SOC_BIAS_STANDBY:
592 power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN;
593
594 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
595 regcache_sync(dev_get_regmap(component->dev, NULL));
596
597 /* Initial cap charge at VMID 5k */
598 snd_soc_component_write(component, WM8974_POWER1, power1 | 0x3);
599 mdelay(100);
600 }
601
602 power1 |= 0x2; /* VMID 500k */
603 snd_soc_component_write(component, WM8974_POWER1, power1);
604 break;
605
606 case SND_SOC_BIAS_OFF:
607 snd_soc_component_write(component, WM8974_POWER1, 0);
608 snd_soc_component_write(component, WM8974_POWER2, 0);
609 snd_soc_component_write(component, WM8974_POWER3, 0);
610 break;
611 }
612
613 return 0;
614}
615
616#define WM8974_RATES (SNDRV_PCM_RATE_8000_48000)
617
618#define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
619 SNDRV_PCM_FMTBIT_S24_LE)
620
621static const struct snd_soc_dai_ops wm8974_ops = {
622 .hw_params = wm8974_pcm_hw_params,
623 .mute_stream = wm8974_mute,
624 .set_fmt = wm8974_set_dai_fmt,
625 .set_clkdiv = wm8974_set_dai_clkdiv,
626 .set_pll = wm8974_set_dai_pll,
627 .set_sysclk = wm8974_set_dai_sysclk,
628 .no_capture_mute = 1,
629};
630
631static struct snd_soc_dai_driver wm8974_dai = {
632 .name = "wm8974-hifi",
633 .playback = {
634 .stream_name = "Playback",
635 .channels_min = 1,
636 .channels_max = 2, /* Only 1 channel of data */
637 .rates = WM8974_RATES,
638 .formats = WM8974_FORMATS,},
639 .capture = {
640 .stream_name = "Capture",
641 .channels_min = 1,
642 .channels_max = 2, /* Only 1 channel of data */
643 .rates = WM8974_RATES,
644 .formats = WM8974_FORMATS,},
645 .ops = &wm8974_ops,
646 .symmetric_rate = 1,
647};
648
649static const struct regmap_config wm8974_regmap = {
650 .reg_bits = 7,
651 .val_bits = 9,
652
653 .max_register = WM8974_MONOMIX,
654 .reg_defaults = wm8974_reg_defaults,
655 .num_reg_defaults = ARRAY_SIZE(wm8974_reg_defaults),
656 .cache_type = REGCACHE_FLAT,
657};
658
659static int wm8974_probe(struct snd_soc_component *component)
660{
661 int ret = 0;
662
663 ret = wm8974_reset(component);
664 if (ret < 0) {
665 dev_err(component->dev, "Failed to issue reset\n");
666 return ret;
667 }
668
669 return 0;
670}
671
672static const struct snd_soc_component_driver soc_component_dev_wm8974 = {
673 .probe = wm8974_probe,
674 .set_bias_level = wm8974_set_bias_level,
675 .controls = wm8974_snd_controls,
676 .num_controls = ARRAY_SIZE(wm8974_snd_controls),
677 .dapm_widgets = wm8974_dapm_widgets,
678 .num_dapm_widgets = ARRAY_SIZE(wm8974_dapm_widgets),
679 .dapm_routes = wm8974_dapm_routes,
680 .num_dapm_routes = ARRAY_SIZE(wm8974_dapm_routes),
681 .suspend_bias_off = 1,
682 .idle_bias_on = 1,
683 .use_pmdown_time = 1,
684 .endianness = 1,
685};
686
687static int wm8974_i2c_probe(struct i2c_client *i2c)
688{
689 struct wm8974_priv *priv;
690 struct regmap *regmap;
691 int ret;
692
693 priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
694 if (!priv)
695 return -ENOMEM;
696
697 i2c_set_clientdata(i2c, priv);
698
699 regmap = devm_regmap_init_i2c(i2c, &wm8974_regmap);
700 if (IS_ERR(regmap))
701 return PTR_ERR(regmap);
702
703 ret = devm_snd_soc_register_component(&i2c->dev,
704 &soc_component_dev_wm8974, &wm8974_dai, 1);
705
706 return ret;
707}
708
709static const struct i2c_device_id wm8974_i2c_id[] = {
710 { "wm8974" },
711 { }
712};
713MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id);
714
715static const struct of_device_id wm8974_of_match[] = {
716 { .compatible = "wlf,wm8974", },
717 { }
718};
719MODULE_DEVICE_TABLE(of, wm8974_of_match);
720
721static struct i2c_driver wm8974_i2c_driver = {
722 .driver = {
723 .name = "wm8974",
724 .of_match_table = wm8974_of_match,
725 },
726 .probe = wm8974_i2c_probe,
727 .id_table = wm8974_i2c_id,
728};
729
730module_i2c_driver(wm8974_i2c_driver);
731
732MODULE_DESCRIPTION("ASoC WM8974 driver");
733MODULE_AUTHOR("Liam Girdwood");
734MODULE_LICENSE("GPL");
1/*
2 * wm8974.c -- WM8974 ALSA Soc Audio driver
3 *
4 * Copyright 2006-2009 Wolfson Microelectronics PLC.
5 *
6 * Author: Liam Girdwood <Liam.Girdwood@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/kernel.h>
16#include <linux/init.h>
17#include <linux/delay.h>
18#include <linux/pm.h>
19#include <linux/i2c.h>
20#include <linux/regmap.h>
21#include <linux/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
29#include "wm8974.h"
30
31struct wm8974_priv {
32 unsigned int mclk;
33 unsigned int fs;
34};
35
36static const struct reg_default wm8974_reg_defaults[] = {
37 { 0, 0x0000 }, { 1, 0x0000 }, { 2, 0x0000 }, { 3, 0x0000 },
38 { 4, 0x0050 }, { 5, 0x0000 }, { 6, 0x0140 }, { 7, 0x0000 },
39 { 8, 0x0000 }, { 9, 0x0000 }, { 10, 0x0000 }, { 11, 0x00ff },
40 { 12, 0x0000 }, { 13, 0x0000 }, { 14, 0x0100 }, { 15, 0x00ff },
41 { 16, 0x0000 }, { 17, 0x0000 }, { 18, 0x012c }, { 19, 0x002c },
42 { 20, 0x002c }, { 21, 0x002c }, { 22, 0x002c }, { 23, 0x0000 },
43 { 24, 0x0032 }, { 25, 0x0000 }, { 26, 0x0000 }, { 27, 0x0000 },
44 { 28, 0x0000 }, { 29, 0x0000 }, { 30, 0x0000 }, { 31, 0x0000 },
45 { 32, 0x0038 }, { 33, 0x000b }, { 34, 0x0032 }, { 35, 0x0000 },
46 { 36, 0x0008 }, { 37, 0x000c }, { 38, 0x0093 }, { 39, 0x00e9 },
47 { 40, 0x0000 }, { 41, 0x0000 }, { 42, 0x0000 }, { 43, 0x0000 },
48 { 44, 0x0003 }, { 45, 0x0010 }, { 46, 0x0000 }, { 47, 0x0000 },
49 { 48, 0x0000 }, { 49, 0x0002 }, { 50, 0x0000 }, { 51, 0x0000 },
50 { 52, 0x0000 }, { 53, 0x0000 }, { 54, 0x0039 }, { 55, 0x0000 },
51 { 56, 0x0000 },
52};
53
54#define WM8974_POWER1_BIASEN 0x08
55#define WM8974_POWER1_BUFIOEN 0x04
56
57#define wm8974_reset(c) snd_soc_write(c, WM8974_RESET, 0)
58
59static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" };
60static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" };
61static const char *wm8974_eqmode[] = {"Capture", "Playback" };
62static const char *wm8974_bw[] = {"Narrow", "Wide" };
63static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" };
64static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" };
65static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" };
66static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" };
67static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" };
68static const char *wm8974_alc[] = {"ALC", "Limiter" };
69
70static const struct soc_enum wm8974_enum[] = {
71 SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */
72 SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */
73 SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp),
74 SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode),
75
76 SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1),
77 SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw),
78 SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2),
79 SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw),
80
81 SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3),
82 SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw),
83 SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4),
84 SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw),
85
86 SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5),
87 SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc),
88};
89
90static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" };
91
92static SOC_ENUM_SINGLE_DECL(wm8974_auxmode,
93 WM8974_INPUT, 3, wm8974_auxmode_text);
94
95static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
96static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
97static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
98static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
99
100static const struct snd_kcontrol_new wm8974_snd_controls[] = {
101
102SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0),
103
104SOC_ENUM("DAC Companding", wm8974_enum[1]),
105SOC_ENUM("ADC Companding", wm8974_enum[0]),
106
107SOC_ENUM("Playback De-emphasis", wm8974_enum[2]),
108SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0),
109
110SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv),
111
112SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0),
113SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0),
114SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0),
115
116SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv),
117
118SOC_ENUM("Equaliser Function", wm8974_enum[3]),
119SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]),
120SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv),
121
122SOC_ENUM("Equaliser EQ2 Bandwidth", wm8974_enum[5]),
123SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]),
124SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv),
125
126SOC_ENUM("Equaliser EQ3 Bandwidth", wm8974_enum[7]),
127SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]),
128SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv),
129
130SOC_ENUM("Equaliser EQ4 Bandwidth", wm8974_enum[9]),
131SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]),
132SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv),
133
134SOC_ENUM("Equaliser EQ5 Bandwidth", wm8974_enum[11]),
135SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]),
136SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv),
137
138SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0),
139SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0),
140SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0),
141
142SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0),
143SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0),
144
145SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0),
146SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0),
147SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0),
148
149SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0),
150SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0),
151SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0),
152
153SOC_ENUM("ALC Capture Mode", wm8974_enum[13]),
154SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0),
155SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0),
156
157SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0),
158SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0),
159
160SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0),
161SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv),
162
163SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0),
164SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1),
165SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv),
166
167SOC_ENUM("Aux Mode", wm8974_auxmode),
168
169SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0),
170SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1),
171
172/* DAC / ADC oversampling */
173SOC_SINGLE("DAC 128x Oversampling Switch", WM8974_DAC, 8, 1, 0),
174SOC_SINGLE("ADC 128x Oversampling Switch", WM8974_ADC, 8, 1, 0),
175};
176
177/* Speaker Output Mixer */
178static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = {
179SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0),
180SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0),
181SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 0),
182};
183
184/* Mono Output Mixer */
185static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = {
186SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0),
187SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0),
188SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0),
189};
190
191/* Boost mixer */
192static const struct snd_kcontrol_new wm8974_boost_mixer[] = {
193SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0),
194};
195
196/* Input PGA */
197static const struct snd_kcontrol_new wm8974_inpga[] = {
198SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0),
199SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0),
200SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0),
201};
202
203/* AUX Input boost vol */
204static const struct snd_kcontrol_new wm8974_aux_boost_controls =
205SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0);
206
207/* Mic Input boost vol */
208static const struct snd_kcontrol_new wm8974_mic_boost_controls =
209SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0);
210
211static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = {
212SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0,
213 &wm8974_speaker_mixer_controls[0],
214 ARRAY_SIZE(wm8974_speaker_mixer_controls)),
215SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0,
216 &wm8974_mono_mixer_controls[0],
217 ARRAY_SIZE(wm8974_mono_mixer_controls)),
218SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0),
219SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0),
220SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0),
221SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0),
222SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0),
223SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0),
224
225SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga,
226 ARRAY_SIZE(wm8974_inpga)),
227SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0,
228 wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)),
229
230SND_SOC_DAPM_SUPPLY("Mic Bias", WM8974_POWER1, 4, 0, NULL, 0),
231
232SND_SOC_DAPM_INPUT("MICN"),
233SND_SOC_DAPM_INPUT("MICP"),
234SND_SOC_DAPM_INPUT("AUX"),
235SND_SOC_DAPM_OUTPUT("MONOOUT"),
236SND_SOC_DAPM_OUTPUT("SPKOUTP"),
237SND_SOC_DAPM_OUTPUT("SPKOUTN"),
238};
239
240static const struct snd_soc_dapm_route wm8974_dapm_routes[] = {
241 /* Mono output mixer */
242 {"Mono Mixer", "PCM Playback Switch", "DAC"},
243 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
244 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
245
246 /* Speaker output mixer */
247 {"Speaker Mixer", "PCM Playback Switch", "DAC"},
248 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
249 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
250
251 /* Outputs */
252 {"Mono Out", NULL, "Mono Mixer"},
253 {"MONOOUT", NULL, "Mono Out"},
254 {"SpkN Out", NULL, "Speaker Mixer"},
255 {"SpkP Out", NULL, "Speaker Mixer"},
256 {"SPKOUTN", NULL, "SpkN Out"},
257 {"SPKOUTP", NULL, "SpkP Out"},
258
259 /* Boost Mixer */
260 {"ADC", NULL, "Boost Mixer"},
261 {"Boost Mixer", "Aux Switch", "Aux Input"},
262 {"Boost Mixer", NULL, "Input PGA"},
263 {"Boost Mixer", NULL, "MICP"},
264
265 /* Input PGA */
266 {"Input PGA", "Aux Switch", "Aux Input"},
267 {"Input PGA", "MicN Switch", "MICN"},
268 {"Input PGA", "MicP Switch", "MICP"},
269
270 /* Inputs */
271 {"Aux Input", NULL, "AUX"},
272};
273
274struct pll_ {
275 unsigned int pre_div:1;
276 unsigned int n:4;
277 unsigned int k;
278};
279
280/* The size in bits of the pll divide multiplied by 10
281 * to allow rounding later */
282#define FIXED_PLL_SIZE ((1 << 24) * 10)
283
284static void pll_factors(struct pll_ *pll_div,
285 unsigned int target, unsigned int source)
286{
287 unsigned long long Kpart;
288 unsigned int K, Ndiv, Nmod;
289
290 /* There is a fixed divide by 4 in the output path */
291 target *= 4;
292
293 Ndiv = target / source;
294 if (Ndiv < 6) {
295 source /= 2;
296 pll_div->pre_div = 1;
297 Ndiv = target / source;
298 } else
299 pll_div->pre_div = 0;
300
301 if ((Ndiv < 6) || (Ndiv > 12))
302 printk(KERN_WARNING
303 "WM8974 N value %u outwith recommended range!\n",
304 Ndiv);
305
306 pll_div->n = Ndiv;
307 Nmod = target % source;
308 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
309
310 do_div(Kpart, source);
311
312 K = Kpart & 0xFFFFFFFF;
313
314 /* Check if we need to round */
315 if ((K % 10) >= 5)
316 K += 5;
317
318 /* Move down to proper range now rounding is done */
319 K /= 10;
320
321 pll_div->k = K;
322}
323
324static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
325 int source, unsigned int freq_in, unsigned int freq_out)
326{
327 struct snd_soc_codec *codec = codec_dai->codec;
328 struct pll_ pll_div;
329 u16 reg;
330
331 if (freq_in == 0 || freq_out == 0) {
332 /* Clock CODEC directly from MCLK */
333 reg = snd_soc_read(codec, WM8974_CLOCK);
334 snd_soc_write(codec, WM8974_CLOCK, reg & 0x0ff);
335
336 /* Turn off PLL */
337 reg = snd_soc_read(codec, WM8974_POWER1);
338 snd_soc_write(codec, WM8974_POWER1, reg & 0x1df);
339 return 0;
340 }
341
342 pll_factors(&pll_div, freq_out, freq_in);
343
344 snd_soc_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
345 snd_soc_write(codec, WM8974_PLLK1, pll_div.k >> 18);
346 snd_soc_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
347 snd_soc_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff);
348 reg = snd_soc_read(codec, WM8974_POWER1);
349 snd_soc_write(codec, WM8974_POWER1, reg | 0x020);
350
351 /* Run CODEC from PLL instead of MCLK */
352 reg = snd_soc_read(codec, WM8974_CLOCK);
353 snd_soc_write(codec, WM8974_CLOCK, reg | 0x100);
354
355 return 0;
356}
357
358/*
359 * Configure WM8974 clock dividers.
360 */
361static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
362 int div_id, int div)
363{
364 struct snd_soc_codec *codec = codec_dai->codec;
365 u16 reg;
366
367 switch (div_id) {
368 case WM8974_OPCLKDIV:
369 reg = snd_soc_read(codec, WM8974_GPIO) & 0x1cf;
370 snd_soc_write(codec, WM8974_GPIO, reg | div);
371 break;
372 case WM8974_MCLKDIV:
373 reg = snd_soc_read(codec, WM8974_CLOCK) & 0x11f;
374 snd_soc_write(codec, WM8974_CLOCK, reg | div);
375 break;
376 case WM8974_BCLKDIV:
377 reg = snd_soc_read(codec, WM8974_CLOCK) & 0x1e3;
378 snd_soc_write(codec, WM8974_CLOCK, reg | div);
379 break;
380 default:
381 return -EINVAL;
382 }
383
384 return 0;
385}
386
387static unsigned int wm8974_get_mclkdiv(unsigned int f_in, unsigned int f_out,
388 int *mclkdiv)
389{
390 unsigned int ratio = 2 * f_in / f_out;
391
392 if (ratio <= 2) {
393 *mclkdiv = WM8974_MCLKDIV_1;
394 ratio = 2;
395 } else if (ratio == 3) {
396 *mclkdiv = WM8974_MCLKDIV_1_5;
397 } else if (ratio == 4) {
398 *mclkdiv = WM8974_MCLKDIV_2;
399 } else if (ratio <= 6) {
400 *mclkdiv = WM8974_MCLKDIV_3;
401 ratio = 6;
402 } else if (ratio <= 8) {
403 *mclkdiv = WM8974_MCLKDIV_4;
404 ratio = 8;
405 } else if (ratio <= 12) {
406 *mclkdiv = WM8974_MCLKDIV_6;
407 ratio = 12;
408 } else if (ratio <= 16) {
409 *mclkdiv = WM8974_MCLKDIV_8;
410 ratio = 16;
411 } else {
412 *mclkdiv = WM8974_MCLKDIV_12;
413 ratio = 24;
414 }
415
416 return f_out * ratio / 2;
417}
418
419static int wm8974_update_clocks(struct snd_soc_dai *dai)
420{
421 struct snd_soc_codec *codec = dai->codec;
422 struct wm8974_priv *priv = snd_soc_codec_get_drvdata(codec);
423 unsigned int fs256;
424 unsigned int fpll = 0;
425 unsigned int f;
426 int mclkdiv;
427
428 if (!priv->mclk || !priv->fs)
429 return 0;
430
431 fs256 = 256 * priv->fs;
432
433 f = wm8974_get_mclkdiv(priv->mclk, fs256, &mclkdiv);
434
435 if (f != priv->mclk) {
436 /* The PLL performs best around 90MHz */
437 fpll = wm8974_get_mclkdiv(22500000, fs256, &mclkdiv);
438 }
439
440 wm8974_set_dai_pll(dai, 0, 0, priv->mclk, fpll);
441 wm8974_set_dai_clkdiv(dai, WM8974_MCLKDIV, mclkdiv);
442
443 return 0;
444}
445
446static int wm8974_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
447 unsigned int freq, int dir)
448{
449 struct snd_soc_codec *codec = dai->codec;
450 struct wm8974_priv *priv = snd_soc_codec_get_drvdata(codec);
451
452 if (dir != SND_SOC_CLOCK_IN)
453 return -EINVAL;
454
455 priv->mclk = freq;
456
457 return wm8974_update_clocks(dai);
458}
459
460static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
461 unsigned int fmt)
462{
463 struct snd_soc_codec *codec = codec_dai->codec;
464 u16 iface = 0;
465 u16 clk = snd_soc_read(codec, WM8974_CLOCK) & 0x1fe;
466
467 /* set master/slave audio interface */
468 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
469 case SND_SOC_DAIFMT_CBM_CFM:
470 clk |= 0x0001;
471 break;
472 case SND_SOC_DAIFMT_CBS_CFS:
473 break;
474 default:
475 return -EINVAL;
476 }
477
478 /* interface format */
479 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
480 case SND_SOC_DAIFMT_I2S:
481 iface |= 0x0010;
482 break;
483 case SND_SOC_DAIFMT_RIGHT_J:
484 break;
485 case SND_SOC_DAIFMT_LEFT_J:
486 iface |= 0x0008;
487 break;
488 case SND_SOC_DAIFMT_DSP_A:
489 iface |= 0x00018;
490 break;
491 default:
492 return -EINVAL;
493 }
494
495 /* clock inversion */
496 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
497 case SND_SOC_DAIFMT_NB_NF:
498 break;
499 case SND_SOC_DAIFMT_IB_IF:
500 iface |= 0x0180;
501 break;
502 case SND_SOC_DAIFMT_IB_NF:
503 iface |= 0x0100;
504 break;
505 case SND_SOC_DAIFMT_NB_IF:
506 iface |= 0x0080;
507 break;
508 default:
509 return -EINVAL;
510 }
511
512 snd_soc_write(codec, WM8974_IFACE, iface);
513 snd_soc_write(codec, WM8974_CLOCK, clk);
514 return 0;
515}
516
517static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
518 struct snd_pcm_hw_params *params,
519 struct snd_soc_dai *dai)
520{
521 struct snd_soc_codec *codec = dai->codec;
522 struct wm8974_priv *priv = snd_soc_codec_get_drvdata(codec);
523 u16 iface = snd_soc_read(codec, WM8974_IFACE) & 0x19f;
524 u16 adn = snd_soc_read(codec, WM8974_ADD) & 0x1f1;
525 int err;
526
527 priv->fs = params_rate(params);
528 err = wm8974_update_clocks(dai);
529 if (err)
530 return err;
531
532 /* bit size */
533 switch (params_width(params)) {
534 case 16:
535 break;
536 case 20:
537 iface |= 0x0020;
538 break;
539 case 24:
540 iface |= 0x0040;
541 break;
542 case 32:
543 iface |= 0x0060;
544 break;
545 }
546
547 /* filter coefficient */
548 switch (params_rate(params)) {
549 case 8000:
550 adn |= 0x5 << 1;
551 break;
552 case 11025:
553 adn |= 0x4 << 1;
554 break;
555 case 16000:
556 adn |= 0x3 << 1;
557 break;
558 case 22050:
559 adn |= 0x2 << 1;
560 break;
561 case 32000:
562 adn |= 0x1 << 1;
563 break;
564 case 44100:
565 case 48000:
566 break;
567 }
568
569 snd_soc_write(codec, WM8974_IFACE, iface);
570 snd_soc_write(codec, WM8974_ADD, adn);
571 return 0;
572}
573
574static int wm8974_mute(struct snd_soc_dai *dai, int mute)
575{
576 struct snd_soc_codec *codec = dai->codec;
577 u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf;
578
579 if (mute)
580 snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40);
581 else
582 snd_soc_write(codec, WM8974_DAC, mute_reg);
583 return 0;
584}
585
586/* liam need to make this lower power with dapm */
587static int wm8974_set_bias_level(struct snd_soc_codec *codec,
588 enum snd_soc_bias_level level)
589{
590 u16 power1 = snd_soc_read(codec, WM8974_POWER1) & ~0x3;
591
592 switch (level) {
593 case SND_SOC_BIAS_ON:
594 case SND_SOC_BIAS_PREPARE:
595 power1 |= 0x1; /* VMID 50k */
596 snd_soc_write(codec, WM8974_POWER1, power1);
597 break;
598
599 case SND_SOC_BIAS_STANDBY:
600 power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN;
601
602 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
603 regcache_sync(dev_get_regmap(codec->dev, NULL));
604
605 /* Initial cap charge at VMID 5k */
606 snd_soc_write(codec, WM8974_POWER1, power1 | 0x3);
607 mdelay(100);
608 }
609
610 power1 |= 0x2; /* VMID 500k */
611 snd_soc_write(codec, WM8974_POWER1, power1);
612 break;
613
614 case SND_SOC_BIAS_OFF:
615 snd_soc_write(codec, WM8974_POWER1, 0);
616 snd_soc_write(codec, WM8974_POWER2, 0);
617 snd_soc_write(codec, WM8974_POWER3, 0);
618 break;
619 }
620
621 return 0;
622}
623
624#define WM8974_RATES (SNDRV_PCM_RATE_8000_48000)
625
626#define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
627 SNDRV_PCM_FMTBIT_S24_LE)
628
629static const struct snd_soc_dai_ops wm8974_ops = {
630 .hw_params = wm8974_pcm_hw_params,
631 .digital_mute = wm8974_mute,
632 .set_fmt = wm8974_set_dai_fmt,
633 .set_clkdiv = wm8974_set_dai_clkdiv,
634 .set_pll = wm8974_set_dai_pll,
635 .set_sysclk = wm8974_set_dai_sysclk,
636};
637
638static struct snd_soc_dai_driver wm8974_dai = {
639 .name = "wm8974-hifi",
640 .playback = {
641 .stream_name = "Playback",
642 .channels_min = 1,
643 .channels_max = 2, /* Only 1 channel of data */
644 .rates = WM8974_RATES,
645 .formats = WM8974_FORMATS,},
646 .capture = {
647 .stream_name = "Capture",
648 .channels_min = 1,
649 .channels_max = 2, /* Only 1 channel of data */
650 .rates = WM8974_RATES,
651 .formats = WM8974_FORMATS,},
652 .ops = &wm8974_ops,
653 .symmetric_rates = 1,
654};
655
656static const struct regmap_config wm8974_regmap = {
657 .reg_bits = 7,
658 .val_bits = 9,
659
660 .max_register = WM8974_MONOMIX,
661 .reg_defaults = wm8974_reg_defaults,
662 .num_reg_defaults = ARRAY_SIZE(wm8974_reg_defaults),
663 .cache_type = REGCACHE_FLAT,
664};
665
666static int wm8974_probe(struct snd_soc_codec *codec)
667{
668 int ret = 0;
669
670 ret = wm8974_reset(codec);
671 if (ret < 0) {
672 dev_err(codec->dev, "Failed to issue reset\n");
673 return ret;
674 }
675
676 return 0;
677}
678
679static const struct snd_soc_codec_driver soc_codec_dev_wm8974 = {
680 .probe = wm8974_probe,
681 .set_bias_level = wm8974_set_bias_level,
682 .suspend_bias_off = true,
683
684 .component_driver = {
685 .controls = wm8974_snd_controls,
686 .num_controls = ARRAY_SIZE(wm8974_snd_controls),
687 .dapm_widgets = wm8974_dapm_widgets,
688 .num_dapm_widgets = ARRAY_SIZE(wm8974_dapm_widgets),
689 .dapm_routes = wm8974_dapm_routes,
690 .num_dapm_routes = ARRAY_SIZE(wm8974_dapm_routes),
691 },
692};
693
694static int wm8974_i2c_probe(struct i2c_client *i2c,
695 const struct i2c_device_id *id)
696{
697 struct wm8974_priv *priv;
698 struct regmap *regmap;
699 int ret;
700
701 priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
702 if (!priv)
703 return -ENOMEM;
704
705 i2c_set_clientdata(i2c, priv);
706
707 regmap = devm_regmap_init_i2c(i2c, &wm8974_regmap);
708 if (IS_ERR(regmap))
709 return PTR_ERR(regmap);
710
711 ret = snd_soc_register_codec(&i2c->dev,
712 &soc_codec_dev_wm8974, &wm8974_dai, 1);
713
714 return ret;
715}
716
717static int wm8974_i2c_remove(struct i2c_client *client)
718{
719 snd_soc_unregister_codec(&client->dev);
720
721 return 0;
722}
723
724static const struct i2c_device_id wm8974_i2c_id[] = {
725 { "wm8974", 0 },
726 { }
727};
728MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id);
729
730static const struct of_device_id wm8974_of_match[] = {
731 { .compatible = "wlf,wm8974", },
732 { }
733};
734MODULE_DEVICE_TABLE(of, wm8974_of_match);
735
736static struct i2c_driver wm8974_i2c_driver = {
737 .driver = {
738 .name = "wm8974",
739 .of_match_table = wm8974_of_match,
740 },
741 .probe = wm8974_i2c_probe,
742 .remove = wm8974_i2c_remove,
743 .id_table = wm8974_i2c_id,
744};
745
746module_i2c_driver(wm8974_i2c_driver);
747
748MODULE_DESCRIPTION("ASoC WM8974 driver");
749MODULE_AUTHOR("Liam Girdwood");
750MODULE_LICENSE("GPL");