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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>
22#include <linux/regmap.h>
23#include <linux/slab.h>
24#include <sound/core.h>
25#include <sound/pcm.h>
26#include <sound/pcm_params.h>
27#include <sound/soc.h>
28#include <sound/initval.h>
29
30#include "wm8971.h"
31
32#define WM8971_REG_COUNT 43
33
34static struct workqueue_struct *wm8971_workq = NULL;
35
36
37struct wm8971_priv {
38 unsigned int sysclk;
39};
40
41
42
43
44
45
46static const struct reg_default wm8971_reg_defaults[] = {
47 { 0, 0x0097 },
48 { 1, 0x0097 },
49 { 2, 0x0079 },
50 { 3, 0x0079 },
51 { 4, 0x0000 },
52 { 5, 0x0008 },
53 { 6, 0x0000 },
54 { 7, 0x000a },
55 { 8, 0x0000 },
56 { 9, 0x0000 },
57 { 10, 0x00ff },
58 { 11, 0x00ff },
59 { 12, 0x000f },
60 { 13, 0x000f },
61 { 14, 0x0000 },
62 { 15, 0x0000 },
63 { 16, 0x0000 },
64 { 17, 0x007b },
65 { 18, 0x0000 },
66 { 19, 0x0032 },
67 { 20, 0x0000 },
68 { 21, 0x00c3 },
69 { 22, 0x00c3 },
70 { 23, 0x00c0 },
71 { 24, 0x0000 },
72 { 25, 0x0000 },
73 { 26, 0x0000 },
74 { 27, 0x0000 },
75 { 28, 0x0000 },
76 { 29, 0x0000 },
77 { 30, 0x0000 },
78 { 31, 0x0000 },
79 { 32, 0x0000 },
80 { 33, 0x0000 },
81 { 34, 0x0050 },
82 { 35, 0x0050 },
83 { 36, 0x0050 },
84 { 37, 0x0050 },
85 { 38, 0x0050 },
86 { 39, 0x0050 },
87 { 40, 0x0079 },
88 { 41, 0x0079 },
89 { 42, 0x0079 },
90};
91
92#define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
93
94
95static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
96static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
97 "200Hz @ 48kHz" };
98static const char *wm8971_treble[] = { "8kHz", "4kHz" };
99static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
100static const char *wm8971_ng_type[] = { "Constant PGA Gain",
101 "Mute ADC Output" };
102static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
103static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
104 "Mono (Right)", "Digital Mono"};
105static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
106static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
107 "Differential"};
108static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
109 "Differential"};
110static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
111static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
112static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
113 "L + R Invert"};
114
115static const struct soc_enum wm8971_enum[] = {
116 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass),
117 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
118 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
119 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
120 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type),
121 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
122 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
123 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
124 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux),
125 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
126 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
127 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
128 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol),
129 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
130};
131
132static const struct snd_kcontrol_new wm8971_snd_controls[] = {
133 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
134 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
135 6, 1, 0),
136 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
137
138 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
139 WM8971_ROUT1V, 7, 1, 0),
140 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
141 WM8971_ROUT2V, 7, 1, 0),
142 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
143
144 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
145
146 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
147 WM8971_LOUTM2, 4, 7, 1),
148 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
149 WM8971_ROUTM2, 4, 7, 1),
150 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
151 WM8971_MOUTM2, 4, 7, 1),
152
153 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
154 WM8971_ROUT1V, 0, 127, 0),
155 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
156 WM8971_ROUT2V, 0, 127, 0),
157
158 SOC_ENUM("Bass Boost", wm8971_enum[0]),
159 SOC_ENUM("Bass Filter", wm8971_enum[1]),
160 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
161
162 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
163 SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
164
165 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
166
167 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
168 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
169
170 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
171 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
172 SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
173 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
174 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
175 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
176 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
177 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
178 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
179 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
180
181 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
182 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
183
184 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
185 SOC_ENUM("Playback Function", wm8971_enum[6]),
186 SOC_ENUM("Playback Phase", wm8971_enum[7]),
187
188 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
189};
190
191
192
193
194
195
196static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
197SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
198SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
199SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
200SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
201};
202
203
204static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
205SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
206SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
207SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
208SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
209};
210
211
212static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
213SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
214SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
215SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
216SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
217};
218
219
220static const struct snd_kcontrol_new wm8971_left_line_controls =
221SOC_DAPM_ENUM("Route", wm8971_enum[8]);
222
223
224static const struct snd_kcontrol_new wm8971_right_line_controls =
225SOC_DAPM_ENUM("Route", wm8971_enum[9]);
226
227
228static const struct snd_kcontrol_new wm8971_left_pga_controls =
229SOC_DAPM_ENUM("Route", wm8971_enum[10]);
230
231
232static const struct snd_kcontrol_new wm8971_right_pga_controls =
233SOC_DAPM_ENUM("Route", wm8971_enum[11]);
234
235
236static const struct snd_kcontrol_new wm8971_monomux_controls =
237SOC_DAPM_ENUM("Route", wm8971_enum[13]);
238
239static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
240 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
241 &wm8971_left_mixer_controls[0],
242 ARRAY_SIZE(wm8971_left_mixer_controls)),
243 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
244 &wm8971_right_mixer_controls[0],
245 ARRAY_SIZE(wm8971_right_mixer_controls)),
246 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
247 &wm8971_mono_mixer_controls[0],
248 ARRAY_SIZE(wm8971_mono_mixer_controls)),
249
250 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
251 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
252 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
253 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
254 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
255 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
256 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
257
258 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1, 1, 0, NULL, 0),
259 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
260 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
261
262 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
263 &wm8971_left_pga_controls),
264 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
265 &wm8971_right_pga_controls),
266 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
267 &wm8971_left_line_controls),
268 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
269 &wm8971_right_line_controls),
270
271 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
272 &wm8971_monomux_controls),
273 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
274 &wm8971_monomux_controls),
275
276 SND_SOC_DAPM_OUTPUT("LOUT1"),
277 SND_SOC_DAPM_OUTPUT("ROUT1"),
278 SND_SOC_DAPM_OUTPUT("LOUT2"),
279 SND_SOC_DAPM_OUTPUT("ROUT2"),
280 SND_SOC_DAPM_OUTPUT("MONO"),
281
282 SND_SOC_DAPM_INPUT("LINPUT1"),
283 SND_SOC_DAPM_INPUT("RINPUT1"),
284 SND_SOC_DAPM_INPUT("MIC"),
285};
286
287static const struct snd_soc_dapm_route wm8971_dapm_routes[] = {
288
289 {"Left Mixer", "Playback Switch", "Left DAC"},
290 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
291 {"Left Mixer", "Right Playback Switch", "Right DAC"},
292 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
293
294
295 {"Right Mixer", "Left Playback Switch", "Left DAC"},
296 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
297 {"Right Mixer", "Playback Switch", "Right DAC"},
298 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
299
300
301 {"Left Out 1", NULL, "Left Mixer"},
302 {"LOUT1", NULL, "Left Out 1"},
303
304
305 {"Left Out 2", NULL, "Left Mixer"},
306 {"LOUT2", NULL, "Left Out 2"},
307
308
309 {"Right Out 1", NULL, "Right Mixer"},
310 {"ROUT1", NULL, "Right Out 1"},
311
312
313 {"Right Out 2", NULL, "Right Mixer"},
314 {"ROUT2", NULL, "Right Out 2"},
315
316
317 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
318 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
319 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
320 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
321
322
323 {"Mono Out", NULL, "Mono Mixer"},
324 {"MONO1", NULL, "Mono Out"},
325
326
327 {"Left Line Mux", "Line", "LINPUT1"},
328 {"Left Line Mux", "PGA", "Left PGA Mux"},
329 {"Left Line Mux", "Differential", "Differential Mux"},
330
331
332 {"Right Line Mux", "Line", "RINPUT1"},
333 {"Right Line Mux", "Mic", "MIC"},
334 {"Right Line Mux", "PGA", "Right PGA Mux"},
335 {"Right Line Mux", "Differential", "Differential Mux"},
336
337
338 {"Left PGA Mux", "Line", "LINPUT1"},
339 {"Left PGA Mux", "Differential", "Differential Mux"},
340
341
342 {"Right PGA Mux", "Line", "RINPUT1"},
343 {"Right PGA Mux", "Differential", "Differential Mux"},
344
345
346 {"Differential Mux", "Line", "LINPUT1"},
347 {"Differential Mux", "Line", "RINPUT1"},
348
349
350 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
351 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
352 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
353
354
355 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
356 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
357 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
358
359
360 {"Left ADC", NULL, "Left ADC Mux"},
361 {"Right ADC", NULL, "Right ADC Mux"},
362};
363
364struct _coeff_div {
365 u32 mclk;
366 u32 rate;
367 u16 fs;
368 u8 sr:5;
369 u8 usb:1;
370};
371
372
373static const struct _coeff_div coeff_div[] = {
374
375 {12288000, 8000, 1536, 0x6, 0x0},
376 {11289600, 8000, 1408, 0x16, 0x0},
377 {18432000, 8000, 2304, 0x7, 0x0},
378 {16934400, 8000, 2112, 0x17, 0x0},
379 {12000000, 8000, 1500, 0x6, 0x1},
380
381
382 {11289600, 11025, 1024, 0x18, 0x0},
383 {16934400, 11025, 1536, 0x19, 0x0},
384 {12000000, 11025, 1088, 0x19, 0x1},
385
386
387 {12288000, 16000, 768, 0xa, 0x0},
388 {18432000, 16000, 1152, 0xb, 0x0},
389 {12000000, 16000, 750, 0xa, 0x1},
390
391
392 {11289600, 22050, 512, 0x1a, 0x0},
393 {16934400, 22050, 768, 0x1b, 0x0},
394 {12000000, 22050, 544, 0x1b, 0x1},
395
396
397 {12288000, 32000, 384, 0xc, 0x0},
398 {18432000, 32000, 576, 0xd, 0x0},
399 {12000000, 32000, 375, 0xa, 0x1},
400
401
402 {11289600, 44100, 256, 0x10, 0x0},
403 {16934400, 44100, 384, 0x11, 0x0},
404 {12000000, 44100, 272, 0x11, 0x1},
405
406
407 {12288000, 48000, 256, 0x0, 0x0},
408 {18432000, 48000, 384, 0x1, 0x0},
409 {12000000, 48000, 250, 0x0, 0x1},
410
411
412 {11289600, 88200, 128, 0x1e, 0x0},
413 {16934400, 88200, 192, 0x1f, 0x0},
414 {12000000, 88200, 136, 0x1f, 0x1},
415
416
417 {12288000, 96000, 128, 0xe, 0x0},
418 {18432000, 96000, 192, 0xf, 0x0},
419 {12000000, 96000, 125, 0xe, 0x1},
420};
421
422static int get_coeff(int mclk, int rate)
423{
424 int i;
425
426 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
427 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
428 return i;
429 }
430 return -EINVAL;
431}
432
433static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
434 int clk_id, unsigned int freq, int dir)
435{
436 struct snd_soc_codec *codec = codec_dai->codec;
437 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
438
439 switch (freq) {
440 case 11289600:
441 case 12000000:
442 case 12288000:
443 case 16934400:
444 case 18432000:
445 wm8971->sysclk = freq;
446 return 0;
447 }
448 return -EINVAL;
449}
450
451static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
452 unsigned int fmt)
453{
454 struct snd_soc_codec *codec = codec_dai->codec;
455 u16 iface = 0;
456
457
458 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
459 case SND_SOC_DAIFMT_CBM_CFM:
460 iface = 0x0040;
461 break;
462 case SND_SOC_DAIFMT_CBS_CFS:
463 break;
464 default:
465 return -EINVAL;
466 }
467
468
469 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
470 case SND_SOC_DAIFMT_I2S:
471 iface |= 0x0002;
472 break;
473 case SND_SOC_DAIFMT_RIGHT_J:
474 break;
475 case SND_SOC_DAIFMT_LEFT_J:
476 iface |= 0x0001;
477 break;
478 case SND_SOC_DAIFMT_DSP_A:
479 iface |= 0x0003;
480 break;
481 case SND_SOC_DAIFMT_DSP_B:
482 iface |= 0x0013;
483 break;
484 default:
485 return -EINVAL;
486 }
487
488
489 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
490 case SND_SOC_DAIFMT_NB_NF:
491 break;
492 case SND_SOC_DAIFMT_IB_IF:
493 iface |= 0x0090;
494 break;
495 case SND_SOC_DAIFMT_IB_NF:
496 iface |= 0x0080;
497 break;
498 case SND_SOC_DAIFMT_NB_IF:
499 iface |= 0x0010;
500 break;
501 default:
502 return -EINVAL;
503 }
504
505 snd_soc_write(codec, WM8971_IFACE, iface);
506 return 0;
507}
508
509static int wm8971_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_codec *codec = dai->codec;
514 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
515 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
516 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
517 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
518
519
520 switch (params_width(params)) {
521 case 16:
522 break;
523 case 20:
524 iface |= 0x0004;
525 break;
526 case 24:
527 iface |= 0x0008;
528 break;
529 case 32:
530 iface |= 0x000c;
531 break;
532 }
533
534
535 snd_soc_write(codec, WM8971_IFACE, iface);
536 if (coeff >= 0)
537 snd_soc_write(codec, WM8971_SRATE, srate |
538 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
539
540 return 0;
541}
542
543static int wm8971_mute(struct snd_soc_dai *dai, int mute)
544{
545 struct snd_soc_codec *codec = dai->codec;
546 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
547
548 if (mute)
549 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
550 else
551 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
552 return 0;
553}
554
555static int wm8971_set_bias_level(struct snd_soc_codec *codec,
556 enum snd_soc_bias_level level)
557{
558 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
559
560 switch (level) {
561 case SND_SOC_BIAS_ON:
562
563 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
564 break;
565 case SND_SOC_BIAS_PREPARE:
566 break;
567 case SND_SOC_BIAS_STANDBY:
568 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
569 snd_soc_cache_sync(codec);
570
571
572 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
573 break;
574 case SND_SOC_BIAS_OFF:
575 snd_soc_write(codec, WM8971_PWR1, 0x0001);
576 break;
577 }
578 codec->dapm.bias_level = level;
579 return 0;
580}
581
582#define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
583 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
584 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
585
586#define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
587 SNDRV_PCM_FMTBIT_S24_LE)
588
589static const struct snd_soc_dai_ops wm8971_dai_ops = {
590 .hw_params = wm8971_pcm_hw_params,
591 .digital_mute = wm8971_mute,
592 .set_fmt = wm8971_set_dai_fmt,
593 .set_sysclk = wm8971_set_dai_sysclk,
594};
595
596static struct snd_soc_dai_driver wm8971_dai = {
597 .name = "wm8971-hifi",
598 .playback = {
599 .stream_name = "Playback",
600 .channels_min = 1,
601 .channels_max = 2,
602 .rates = WM8971_RATES,
603 .formats = WM8971_FORMATS,},
604 .capture = {
605 .stream_name = "Capture",
606 .channels_min = 1,
607 .channels_max = 2,
608 .rates = WM8971_RATES,
609 .formats = WM8971_FORMATS,},
610 .ops = &wm8971_dai_ops,
611};
612
613static void wm8971_work(struct work_struct *work)
614{
615 struct snd_soc_dapm_context *dapm =
616 container_of(work, struct snd_soc_dapm_context,
617 delayed_work.work);
618 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(dapm);
619 wm8971_set_bias_level(codec, codec->dapm.bias_level);
620}
621
622static int wm8971_suspend(struct snd_soc_codec *codec)
623{
624 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
625 return 0;
626}
627
628static int wm8971_resume(struct snd_soc_codec *codec)
629{
630 u16 reg;
631
632 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
633
634
635 if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) {
636 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
637 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
638 codec->dapm.bias_level = SND_SOC_BIAS_ON;
639 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
640 msecs_to_jiffies(1000));
641 }
642
643 return 0;
644}
645
646static int wm8971_probe(struct snd_soc_codec *codec)
647{
648 int ret = 0;
649 u16 reg;
650
651 INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8971_work);
652 wm8971_workq = create_workqueue("wm8971");
653 if (wm8971_workq == NULL)
654 return -ENOMEM;
655
656 wm8971_reset(codec);
657
658
659 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
660 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
661 codec->dapm.bias_level = SND_SOC_BIAS_STANDBY;
662 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
663 msecs_to_jiffies(1000));
664
665
666 snd_soc_update_bits(codec, WM8971_LDAC, 0x0100, 0x0100);
667 snd_soc_update_bits(codec, WM8971_RDAC, 0x0100, 0x0100);
668 snd_soc_update_bits(codec, WM8971_LOUT1V, 0x0100, 0x0100);
669 snd_soc_update_bits(codec, WM8971_ROUT1V, 0x0100, 0x0100);
670 snd_soc_update_bits(codec, WM8971_LOUT2V, 0x0100, 0x0100);
671 snd_soc_update_bits(codec, WM8971_ROUT2V, 0x0100, 0x0100);
672 snd_soc_update_bits(codec, WM8971_LINVOL, 0x0100, 0x0100);
673 snd_soc_update_bits(codec, WM8971_RINVOL, 0x0100, 0x0100);
674
675 return ret;
676}
677
678
679
680static int wm8971_remove(struct snd_soc_codec *codec)
681{
682 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
683
684 if (wm8971_workq)
685 destroy_workqueue(wm8971_workq);
686 return 0;
687}
688
689static struct snd_soc_codec_driver soc_codec_dev_wm8971 = {
690 .probe = wm8971_probe,
691 .remove = wm8971_remove,
692 .suspend = wm8971_suspend,
693 .resume = wm8971_resume,
694 .set_bias_level = wm8971_set_bias_level,
695
696 .controls = wm8971_snd_controls,
697 .num_controls = ARRAY_SIZE(wm8971_snd_controls),
698 .dapm_widgets = wm8971_dapm_widgets,
699 .num_dapm_widgets = ARRAY_SIZE(wm8971_dapm_widgets),
700 .dapm_routes = wm8971_dapm_routes,
701 .num_dapm_routes = ARRAY_SIZE(wm8971_dapm_routes),
702};
703
704static const struct regmap_config wm8971_regmap = {
705 .reg_bits = 7,
706 .val_bits = 9,
707 .max_register = WM8971_MOUTV,
708
709 .reg_defaults = wm8971_reg_defaults,
710 .num_reg_defaults = ARRAY_SIZE(wm8971_reg_defaults),
711 .cache_type = REGCACHE_RBTREE,
712};
713
714static int wm8971_i2c_probe(struct i2c_client *i2c,
715 const struct i2c_device_id *id)
716{
717 struct wm8971_priv *wm8971;
718 struct regmap *regmap;
719 int ret;
720
721 wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv),
722 GFP_KERNEL);
723 if (wm8971 == NULL)
724 return -ENOMEM;
725
726 regmap = devm_regmap_init_i2c(i2c, &wm8971_regmap);
727 if (IS_ERR(regmap))
728 return PTR_ERR(regmap);
729
730 i2c_set_clientdata(i2c, wm8971);
731
732 ret = snd_soc_register_codec(&i2c->dev,
733 &soc_codec_dev_wm8971, &wm8971_dai, 1);
734
735 return ret;
736}
737
738static int wm8971_i2c_remove(struct i2c_client *client)
739{
740 snd_soc_unregister_codec(&client->dev);
741 return 0;
742}
743
744static const struct i2c_device_id wm8971_i2c_id[] = {
745 { "wm8971", 0 },
746 { }
747};
748MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
749
750static struct i2c_driver wm8971_i2c_driver = {
751 .driver = {
752 .name = "wm8971",
753 .owner = THIS_MODULE,
754 },
755 .probe = wm8971_i2c_probe,
756 .remove = wm8971_i2c_remove,
757 .id_table = wm8971_i2c_id,
758};
759
760module_i2c_driver(wm8971_i2c_driver);
761
762MODULE_DESCRIPTION("ASoC WM8971 driver");
763MODULE_AUTHOR("Lab126");
764MODULE_LICENSE("GPL");
765
