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ASoC: wm8971: Use system_power_efficient_wq instead of custom workqueue
[deliverable/linux.git] / sound / soc / codecs / wm8971.c
CommitLineData
8bae3e23
KK		 1/*
2 * wm8971.c -- WM8971 ALSA SoC Audio driver
3 *
4 * Copyright 2005 Lab126, Inc.
5 *
6 * Author: Kenneth Kiraly <kiraly@lab126.com>
7 *
8 * Based on wm8753.c by Liam Girdwood
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 */
15
16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/init.h>
19#include <linux/delay.h>
20#include <linux/pm.h>
21#include <linux/i2c.h>
bc7f610f 22#include <linux/regmap.h>
5a0e3ad6 23#include <linux/slab.h>
8bae3e23
KK		 24#include <sound/core.h>
25#include <sound/pcm.h>
26#include <sound/pcm_params.h>
27#include <sound/soc.h>
8bae3e23
KK		 28#include <sound/initval.h>
29
30#include "wm8971.h"
31
8bae3e23
KK		 32#define WM8971_REG_COUNT 43
33
8bae3e23
KK		 34/* codec private data */
35struct wm8971_priv {
36 unsigned int sysclk;
37};
38
39/*
40 * wm8971 register cache
41 * We can't read the WM8971 register space when we
42 * are using 2 wire for device control, so we cache them instead.
43 */
bc7f610f
MB		 44static const struct reg_default wm8971_reg_defaults[] = {
45 { 0, 0x0097 },
46 { 1, 0x0097 },
47 { 2, 0x0079 },
48 { 3, 0x0079 },
49 { 4, 0x0000 },
50 { 5, 0x0008 },
51 { 6, 0x0000 },
52 { 7, 0x000a },
53 { 8, 0x0000 },
54 { 9, 0x0000 },
55 { 10, 0x00ff },
56 { 11, 0x00ff },
57 { 12, 0x000f },
58 { 13, 0x000f },
59 { 14, 0x0000 },
60 { 15, 0x0000 },
61 { 16, 0x0000 },
62 { 17, 0x007b },
63 { 18, 0x0000 },
64 { 19, 0x0032 },
65 { 20, 0x0000 },
66 { 21, 0x00c3 },
67 { 22, 0x00c3 },
68 { 23, 0x00c0 },
69 { 24, 0x0000 },
70 { 25, 0x0000 },
71 { 26, 0x0000 },
72 { 27, 0x0000 },
73 { 28, 0x0000 },
74 { 29, 0x0000 },
75 { 30, 0x0000 },
76 { 31, 0x0000 },
77 { 32, 0x0000 },
78 { 33, 0x0000 },
79 { 34, 0x0050 },
80 { 35, 0x0050 },
81 { 36, 0x0050 },
82 { 37, 0x0050 },
83 { 38, 0x0050 },
84 { 39, 0x0050 },
85 { 40, 0x0079 },
86 { 41, 0x0079 },
87 { 42, 0x0079 },
8bae3e23
KK		 88};
89
17a52fd6 90#define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
8bae3e23
KK		 91
92/* WM8971 Controls */
93static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
94static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
95 "200Hz @ 48kHz" };
96static const char *wm8971_treble[] = { "8kHz", "4kHz" };
97static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
98static const char *wm8971_ng_type[] = { "Constant PGA Gain",
99 "Mute ADC Output" };
100static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
101static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
102 "Mono (Right)", "Digital Mono"};
103static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
104static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
105 "Differential"};
106static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
107 "Differential"};
108static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
109static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
110static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
111 "L + R Invert"};
112
113static const struct soc_enum wm8971_enum[] = {
114 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */
115 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
116 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
117 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
118 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */
119 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
120 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
121 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
122 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
123 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
124 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
125 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
126 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */
127 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
128};
129
130static const struct snd_kcontrol_new wm8971_snd_controls[] = {
131 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
132 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
133 6, 1, 0),
134 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
135
136 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
137 WM8971_ROUT1V, 7, 1, 0),
138 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
139 WM8971_ROUT2V, 7, 1, 0),
140 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
141
142 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
143
144 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
145 WM8971_LOUTM2, 4, 7, 1),
146 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
147 WM8971_ROUTM2, 4, 7, 1),
148 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
149 WM8971_MOUTM2, 4, 7, 1),
150
151 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
152 WM8971_ROUT1V, 0, 127, 0),
153 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
154 WM8971_ROUT2V, 0, 127, 0),
155
156 SOC_ENUM("Bass Boost", wm8971_enum[0]),
157 SOC_ENUM("Bass Filter", wm8971_enum[1]),
158 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
159
160 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
161 SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
162
163 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
164
165 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
166 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
167
168 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
169 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
170 SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
171 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
172 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
173 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
174 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
175 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
176 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
177 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
178
179 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
180 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
181
182 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
183 SOC_ENUM("Playback Function", wm8971_enum[6]),
184 SOC_ENUM("Playback Phase", wm8971_enum[7]),
185
186 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
187};
188
8bae3e23
KK		 189/*
190 * DAPM Controls
191 */
192
193/* Left Mixer */
194static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
195SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
196SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
197SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
198SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
199};
200
201/* Right Mixer */
202static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
203SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
204SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
205SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
206SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
207};
208
209/* Mono Mixer */
210static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
211SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
212SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
213SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
214SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
215};
216
217/* Left Line Mux */
218static const struct snd_kcontrol_new wm8971_left_line_controls =
219SOC_DAPM_ENUM("Route", wm8971_enum[8]);
220
221/* Right Line Mux */
222static const struct snd_kcontrol_new wm8971_right_line_controls =
223SOC_DAPM_ENUM("Route", wm8971_enum[9]);
224
225/* Left PGA Mux */
226static const struct snd_kcontrol_new wm8971_left_pga_controls =
227SOC_DAPM_ENUM("Route", wm8971_enum[10]);
228
229/* Right PGA Mux */
230static const struct snd_kcontrol_new wm8971_right_pga_controls =
231SOC_DAPM_ENUM("Route", wm8971_enum[11]);
232
233/* Mono ADC Mux */
234static const struct snd_kcontrol_new wm8971_monomux_controls =
235SOC_DAPM_ENUM("Route", wm8971_enum[13]);
236
237static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
238 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
239 &wm8971_left_mixer_controls[0],
240 ARRAY_SIZE(wm8971_left_mixer_controls)),
241 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
242 &wm8971_right_mixer_controls[0],
243 ARRAY_SIZE(wm8971_right_mixer_controls)),
244 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
245 &wm8971_mono_mixer_controls[0],
246 ARRAY_SIZE(wm8971_mono_mixer_controls)),
247
248 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
249 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
250 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
251 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
252 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
253 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
254 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
255
7d6f6b0f 256 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1, 1, 0, NULL, 0),
8bae3e23
KK		 257 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
258 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
259
260 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
261 &wm8971_left_pga_controls),
262 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
263 &wm8971_right_pga_controls),
264 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
265 &wm8971_left_line_controls),
266 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
267 &wm8971_right_line_controls),
268
269 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
270 &wm8971_monomux_controls),
271 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
272 &wm8971_monomux_controls),
273
274 SND_SOC_DAPM_OUTPUT("LOUT1"),
275 SND_SOC_DAPM_OUTPUT("ROUT1"),
276 SND_SOC_DAPM_OUTPUT("LOUT2"),
277 SND_SOC_DAPM_OUTPUT("ROUT2"),
278 SND_SOC_DAPM_OUTPUT("MONO"),
279
280 SND_SOC_DAPM_INPUT("LINPUT1"),
281 SND_SOC_DAPM_INPUT("RINPUT1"),
282 SND_SOC_DAPM_INPUT("MIC"),
283};
284
c4850644 285static const struct snd_soc_dapm_route wm8971_dapm_routes[] = {
8bae3e23
KK		 286 /* left mixer */
287 {"Left Mixer", "Playback Switch", "Left DAC"},
288 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
289 {"Left Mixer", "Right Playback Switch", "Right DAC"},
290 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
291
292 /* right mixer */
293 {"Right Mixer", "Left Playback Switch", "Left DAC"},
294 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
295 {"Right Mixer", "Playback Switch", "Right DAC"},
296 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
297
298 /* left out 1 */
299 {"Left Out 1", NULL, "Left Mixer"},
300 {"LOUT1", NULL, "Left Out 1"},
301
302 /* left out 2 */
303 {"Left Out 2", NULL, "Left Mixer"},
304 {"LOUT2", NULL, "Left Out 2"},
305
306 /* right out 1 */
307 {"Right Out 1", NULL, "Right Mixer"},
308 {"ROUT1", NULL, "Right Out 1"},
309
310 /* right out 2 */
311 {"Right Out 2", NULL, "Right Mixer"},
312 {"ROUT2", NULL, "Right Out 2"},
313
314 /* mono mixer */
315 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
316 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
317 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
318 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
319
320 /* mono out */
321 {"Mono Out", NULL, "Mono Mixer"},
322 {"MONO1", NULL, "Mono Out"},
323
324 /* Left Line Mux */
325 {"Left Line Mux", "Line", "LINPUT1"},
326 {"Left Line Mux", "PGA", "Left PGA Mux"},
327 {"Left Line Mux", "Differential", "Differential Mux"},
328
329 /* Right Line Mux */
330 {"Right Line Mux", "Line", "RINPUT1"},
331 {"Right Line Mux", "Mic", "MIC"},
332 {"Right Line Mux", "PGA", "Right PGA Mux"},
333 {"Right Line Mux", "Differential", "Differential Mux"},
334
335 /* Left PGA Mux */
336 {"Left PGA Mux", "Line", "LINPUT1"},
337 {"Left PGA Mux", "Differential", "Differential Mux"},
338
339 /* Right PGA Mux */
340 {"Right PGA Mux", "Line", "RINPUT1"},
341 {"Right PGA Mux", "Differential", "Differential Mux"},
342
343 /* Differential Mux */
344 {"Differential Mux", "Line", "LINPUT1"},
345 {"Differential Mux", "Line", "RINPUT1"},
346
347 /* Left ADC Mux */
348 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
349 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
350 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
351
352 /* Right ADC Mux */
353 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
354 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
355 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
356
357 /* ADC */
358 {"Left ADC", NULL, "Left ADC Mux"},
359 {"Right ADC", NULL, "Right ADC Mux"},
360};
361
8bae3e23
KK		 362struct _coeff_div {
363 u32 mclk;
364 u32 rate;
365 u16 fs;
366 u8 sr:5;
367 u8 usb:1;
368};
369
370/* codec hifi mclk clock divider coefficients */
371static const struct _coeff_div coeff_div[] = {
372 /* 8k */
373 {12288000, 8000, 1536, 0x6, 0x0},
374 {11289600, 8000, 1408, 0x16, 0x0},
375 {18432000, 8000, 2304, 0x7, 0x0},
376 {16934400, 8000, 2112, 0x17, 0x0},
377 {12000000, 8000, 1500, 0x6, 0x1},
378
379 /* 11.025k */
380 {11289600, 11025, 1024, 0x18, 0x0},
381 {16934400, 11025, 1536, 0x19, 0x0},
382 {12000000, 11025, 1088, 0x19, 0x1},
383
384 /* 16k */
385 {12288000, 16000, 768, 0xa, 0x0},
386 {18432000, 16000, 1152, 0xb, 0x0},
387 {12000000, 16000, 750, 0xa, 0x1},
388
389 /* 22.05k */
390 {11289600, 22050, 512, 0x1a, 0x0},
391 {16934400, 22050, 768, 0x1b, 0x0},
392 {12000000, 22050, 544, 0x1b, 0x1},
393
394 /* 32k */
395 {12288000, 32000, 384, 0xc, 0x0},
396 {18432000, 32000, 576, 0xd, 0x0},
397 {12000000, 32000, 375, 0xa, 0x1},
398
399 /* 44.1k */
400 {11289600, 44100, 256, 0x10, 0x0},
401 {16934400, 44100, 384, 0x11, 0x0},
402 {12000000, 44100, 272, 0x11, 0x1},
403
404 /* 48k */
405 {12288000, 48000, 256, 0x0, 0x0},
406 {18432000, 48000, 384, 0x1, 0x0},
407 {12000000, 48000, 250, 0x0, 0x1},
408
409 /* 88.2k */
410 {11289600, 88200, 128, 0x1e, 0x0},
411 {16934400, 88200, 192, 0x1f, 0x0},
412 {12000000, 88200, 136, 0x1f, 0x1},
413
414 /* 96k */
415 {12288000, 96000, 128, 0xe, 0x0},
416 {18432000, 96000, 192, 0xf, 0x0},
417 {12000000, 96000, 125, 0xe, 0x1},
418};
419
420static int get_coeff(int mclk, int rate)
421{
422 int i;
423
424 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
425 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
426 return i;
427 }
428 return -EINVAL;
429}
430
431static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
432 int clk_id, unsigned int freq, int dir)
433{
434 struct snd_soc_codec *codec = codec_dai->codec;
b2c812e2 435 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
8bae3e23
KK		 436
437 switch (freq) {
438 case 11289600:
439 case 12000000:
440 case 12288000:
441 case 16934400:
442 case 18432000:
443 wm8971->sysclk = freq;
444 return 0;
445 }
446 return -EINVAL;
447}
448
449static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
450 unsigned int fmt)
451{
452 struct snd_soc_codec *codec = codec_dai->codec;
453 u16 iface = 0;
454
455 /* set master/slave audio interface */
456 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
457 case SND_SOC_DAIFMT_CBM_CFM:
458 iface = 0x0040;
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 |= 0x0002;
470 break;
471 case SND_SOC_DAIFMT_RIGHT_J:
472 break;
473 case SND_SOC_DAIFMT_LEFT_J:
474 iface |= 0x0001;
475 break;
476 case SND_SOC_DAIFMT_DSP_A:
477 iface |= 0x0003;
478 break;
479 case SND_SOC_DAIFMT_DSP_B:
480 iface |= 0x0013;
481 break;
482 default:
483 return -EINVAL;
484 }
485
486 /* clock inversion */
487 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
488 case SND_SOC_DAIFMT_NB_NF:
489 break;
490 case SND_SOC_DAIFMT_IB_IF:
491 iface |= 0x0090;
492 break;
493 case SND_SOC_DAIFMT_IB_NF:
494 iface |= 0x0080;
495 break;
496 case SND_SOC_DAIFMT_NB_IF:
497 iface |= 0x0010;
498 break;
499 default:
500 return -EINVAL;
501 }
502
17a52fd6 503 snd_soc_write(codec, WM8971_IFACE, iface);
8bae3e23
KK		 504 return 0;
505}
506
507static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
dee89c4d
MB		 508 struct snd_pcm_hw_params *params,
509 struct snd_soc_dai *dai)
8bae3e23 510{
e6968a17 511 struct snd_soc_codec *codec = dai->codec;
b2c812e2 512 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
17a52fd6
MB		 513 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
514 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
8bae3e23
KK		 515 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
516
517 /* bit size */
d835e99a
MB		 518 switch (params_width(params)) {
519 case 16:
8bae3e23 520 break;
d835e99a 521 case 20:
8bae3e23
KK		 522 iface |= 0x0004;
523 break;
d835e99a 524 case 24:
8bae3e23
KK		 525 iface |= 0x0008;
526 break;
d835e99a 527 case 32:
8bae3e23
KK		 528 iface |= 0x000c;
529 break;
530 }
531
532 /* set iface & srate */
17a52fd6 533 snd_soc_write(codec, WM8971_IFACE, iface);
8bae3e23 534 if (coeff >= 0)
17a52fd6 535 snd_soc_write(codec, WM8971_SRATE, srate |
8bae3e23
KK		 536 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
537
538 return 0;
539}
540
541static int wm8971_mute(struct snd_soc_dai *dai, int mute)
542{
543 struct snd_soc_codec *codec = dai->codec;
17a52fd6 544 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
8bae3e23
KK		 545
546 if (mute)
17a52fd6 547 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
8bae3e23 548 else
17a52fd6 549 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
8bae3e23
KK		 550 return 0;
551}
552
553static int wm8971_set_bias_level(struct snd_soc_codec *codec,
554 enum snd_soc_bias_level level)
555{
17a52fd6 556 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
8bae3e23
KK		 557
558 switch (level) {
559 case SND_SOC_BIAS_ON:
560 /* set vmid to 50k and unmute dac */
17a52fd6 561 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
8bae3e23
KK		 562 break;
563 case SND_SOC_BIAS_PREPARE:
564 break;
565 case SND_SOC_BIAS_STANDBY:
e46199ec
AL		 566 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
567 snd_soc_cache_sync(codec);
568
8bae3e23 569 /* mute dac and set vmid to 500k, enable VREF */
17a52fd6 570 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
8bae3e23
KK		 571 break;
572 case SND_SOC_BIAS_OFF:
17a52fd6 573 snd_soc_write(codec, WM8971_PWR1, 0x0001);
8bae3e23
KK		 574 break;
575 }
ce6120cc 576 codec->dapm.bias_level = level;
8bae3e23
KK		 577 return 0;
578}
579
580#define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
581 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
582 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
583
584#define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
585 SNDRV_PCM_FMTBIT_S24_LE)
586
85e7652d 587static const struct snd_soc_dai_ops wm8971_dai_ops = {
6335d055
EM		 588 .hw_params = wm8971_pcm_hw_params,
589 .digital_mute = wm8971_mute,
590 .set_fmt = wm8971_set_dai_fmt,
591 .set_sysclk = wm8971_set_dai_sysclk,
592};
593
f0fba2ad
LG		 594static struct snd_soc_dai_driver wm8971_dai = {
595 .name = "wm8971-hifi",
8bae3e23
KK		 596 .playback = {
597 .stream_name = "Playback",
598 .channels_min = 1,
599 .channels_max = 2,
600 .rates = WM8971_RATES,
601 .formats = WM8971_FORMATS,},
602 .capture = {
603 .stream_name = "Capture",
604 .channels_min = 1,
605 .channels_max = 2,
606 .rates = WM8971_RATES,
607 .formats = WM8971_FORMATS,},
6335d055 608 .ops = &wm8971_dai_ops,
8bae3e23 609};
8bae3e23
KK		 610
611static void wm8971_work(struct work_struct *work)
612{
ce6120cc
LG		 613 struct snd_soc_dapm_context *dapm =
614 container_of(work, struct snd_soc_dapm_context,
615 delayed_work.work);
9cca023e 616 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);
ce6120cc 617 wm8971_set_bias_level(codec, codec->dapm.bias_level);
8bae3e23
KK		 618}
619
84b315ee 620static int wm8971_suspend(struct snd_soc_codec *codec)
8bae3e23 621{
8bae3e23
KK		 622 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
623 return 0;
624}
625
f0fba2ad 626static int wm8971_resume(struct snd_soc_codec *codec)
8bae3e23 627{
8bae3e23
KK		 628 u16 reg;
629
8bae3e23
KK		 630 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
631
632 /* charge wm8971 caps */
ce6120cc 633 if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) {
17a52fd6
MB		 634 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
635 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
ce6120cc 636 codec->dapm.bias_level = SND_SOC_BIAS_ON;
ab87ce1d
LPC		 637 queue_delayed_work(system_power_efficient_wq,
638 &codec->dapm.delayed_work,
8bae3e23
KK		 639 msecs_to_jiffies(1000));
640 }
641
642 return 0;
643}
644
f0fba2ad 645static int wm8971_probe(struct snd_soc_codec *codec)
8bae3e23 646{
f0fba2ad
LG		 647 int ret = 0;
648 u16 reg;
649
ce6120cc 650 INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8971_work);
8bae3e23 651
f0fba2ad 652 wm8971_reset(codec);
8bae3e23
KK		 653
654 /* charge output caps - set vmid to 5k for quick power up */
17a52fd6
MB		 655 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
656 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
ce6120cc 657 codec->dapm.bias_level = SND_SOC_BIAS_STANDBY;
ab87ce1d
LPC		 658 queue_delayed_work(system_power_efficient_wq,
659 &codec->dapm.delayed_work,
8bae3e23
KK		 660 msecs_to_jiffies(1000));
661
662 /* set the update bits */
c6d43417
AL		 663 snd_soc_update_bits(codec, WM8971_LDAC, 0x0100, 0x0100);
664 snd_soc_update_bits(codec, WM8971_RDAC, 0x0100, 0x0100);
665 snd_soc_update_bits(codec, WM8971_LOUT1V, 0x0100, 0x0100);
666 snd_soc_update_bits(codec, WM8971_ROUT1V, 0x0100, 0x0100);
667 snd_soc_update_bits(codec, WM8971_LOUT2V, 0x0100, 0x0100);
668 snd_soc_update_bits(codec, WM8971_ROUT2V, 0x0100, 0x0100);
669 snd_soc_update_bits(codec, WM8971_LINVOL, 0x0100, 0x0100);
670 snd_soc_update_bits(codec, WM8971_RINVOL, 0x0100, 0x0100);
8bae3e23 671
8bae3e23 672 return ret;
8bae3e23
KK		 673}
674
8bae3e23 675
f0fba2ad
LG		 676/* power down chip */
677static int wm8971_remove(struct snd_soc_codec *codec)
678{
679 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
680
f0fba2ad
LG		 681 return 0;
682}
683
684static struct snd_soc_codec_driver soc_codec_dev_wm8971 = {
685 .probe = wm8971_probe,
686 .remove = wm8971_remove,
687 .suspend = wm8971_suspend,
688 .resume = wm8971_resume,
689 .set_bias_level = wm8971_set_bias_level,
c4850644
MB		 690
691 .controls = wm8971_snd_controls,
692 .num_controls = ARRAY_SIZE(wm8971_snd_controls),
693 .dapm_widgets = wm8971_dapm_widgets,
694 .num_dapm_widgets = ARRAY_SIZE(wm8971_dapm_widgets),
695 .dapm_routes = wm8971_dapm_routes,
696 .num_dapm_routes = ARRAY_SIZE(wm8971_dapm_routes),
f0fba2ad 697};
8bae3e23 698
bc7f610f
MB		 699static const struct regmap_config wm8971_regmap = {
700 .reg_bits = 7,
701 .val_bits = 9,
702 .max_register = WM8971_MOUTV,
703
704 .reg_defaults = wm8971_reg_defaults,
705 .num_reg_defaults = ARRAY_SIZE(wm8971_reg_defaults),
706 .cache_type = REGCACHE_RBTREE,
707};
708
7a79e94e
BP		 709static int wm8971_i2c_probe(struct i2c_client *i2c,
710 const struct i2c_device_id *id)
8bae3e23 711{
f0fba2ad 712 struct wm8971_priv *wm8971;
bc7f610f 713 struct regmap *regmap;
8bae3e23
KK		 714 int ret;
715
028b0a0a
MB		 716 wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv),
717 GFP_KERNEL);
f0fba2ad
LG		 718 if (wm8971 == NULL)
719 return -ENOMEM;
8bae3e23 720
bc7f610f
MB		 721 regmap = devm_regmap_init_i2c(i2c, &wm8971_regmap);
722 if (IS_ERR(regmap))
723 return PTR_ERR(regmap);
724
f0fba2ad 725 i2c_set_clientdata(i2c, wm8971);
8bae3e23 726
f0fba2ad
LG		 727 ret = snd_soc_register_codec(&i2c->dev,
728 &soc_codec_dev_wm8971, &wm8971_dai, 1);
028b0a0a 729
8bae3e23
KK		 730 return ret;
731}
732
7a79e94e 733static int wm8971_i2c_remove(struct i2c_client *client)
8bae3e23 734{
f0fba2ad 735 snd_soc_unregister_codec(&client->dev);
8bae3e23
KK		 736 return 0;
737}
738
739static const struct i2c_device_id wm8971_i2c_id[] = {
740 { "wm8971", 0 },
741 { }
742};
743MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
744
745static struct i2c_driver wm8971_i2c_driver = {
746 .driver = {
091edccf 747 .name = "wm8971",
8bae3e23
KK		 748 .owner = THIS_MODULE,
749 },
f0fba2ad 750 .probe = wm8971_i2c_probe,
7a79e94e 751 .remove = wm8971_i2c_remove,
8bae3e23
KK		 752 .id_table = wm8971_i2c_id,
753};
8bae3e23 754
28285b96 755module_i2c_driver(wm8971_i2c_driver);
64089b84 756
8bae3e23
KK		 757MODULE_DESCRIPTION("ASoC WM8971 driver");
758MODULE_AUTHOR("Lab126");
759MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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