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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/platform_device.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 enum snd_soc_control_type control_type;
39 unsigned int sysclk;
40};
41
42
43
44
45
46
47static const u16 wm8971_reg[] = {
48 0x0097, 0x0097, 0x0079, 0x0079,
49 0x0000, 0x0008, 0x0000, 0x000a,
50 0x0000, 0x0000, 0x00ff, 0x00ff,
51 0x000f, 0x000f, 0x0000, 0x0000,
52 0x0000, 0x007b, 0x0000, 0x0032,
53 0x0000, 0x00c3, 0x00c3, 0x00c0,
54 0x0000, 0x0000, 0x0000, 0x0000,
55 0x0000, 0x0000, 0x0000, 0x0000,
56 0x0000, 0x0000, 0x0050, 0x0050,
57 0x0050, 0x0050, 0x0050, 0x0050,
58 0x0079, 0x0079, 0x0079,
59};
60
61#define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
62
63
64static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
65static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
66 "200Hz @ 48kHz" };
67static const char *wm8971_treble[] = { "8kHz", "4kHz" };
68static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
69static const char *wm8971_ng_type[] = { "Constant PGA Gain",
70 "Mute ADC Output" };
71static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
72static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
73 "Mono (Right)", "Digital Mono"};
74static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
75static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
76 "Differential"};
77static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
78 "Differential"};
79static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
80static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
81static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
82 "L + R Invert"};
83
84static const struct soc_enum wm8971_enum[] = {
85 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass),
86 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
87 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
88 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
89 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type),
90 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
91 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
92 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
93 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux),
94 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
95 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
96 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
97 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol),
98 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
99};
100
101static const struct snd_kcontrol_new wm8971_snd_controls[] = {
102 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
103 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
104 6, 1, 0),
105 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
106
107 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
108 WM8971_ROUT1V, 7, 1, 0),
109 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
110 WM8971_ROUT2V, 7, 1, 0),
111 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
112
113 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
114
115 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
116 WM8971_LOUTM2, 4, 7, 1),
117 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
118 WM8971_ROUTM2, 4, 7, 1),
119 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
120 WM8971_MOUTM2, 4, 7, 1),
121
122 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
123 WM8971_ROUT1V, 0, 127, 0),
124 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
125 WM8971_ROUT2V, 0, 127, 0),
126
127 SOC_ENUM("Bass Boost", wm8971_enum[0]),
128 SOC_ENUM("Bass Filter", wm8971_enum[1]),
129 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
130
131 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
132 SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
133
134 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
135
136 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
137 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
138
139 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
140 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
141 SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
142 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
143 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
144 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
145 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
146 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
147 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
148 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
149
150 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
151 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
152
153 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
154 SOC_ENUM("Playback Function", wm8971_enum[6]),
155 SOC_ENUM("Playback Phase", wm8971_enum[7]),
156
157 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
158};
159
160
161
162
163
164
165static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
166SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
167SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
168SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
169SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
170};
171
172
173static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
174SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
175SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
176SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
177SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
178};
179
180
181static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
182SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
183SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
184SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
185SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
186};
187
188
189static const struct snd_kcontrol_new wm8971_left_line_controls =
190SOC_DAPM_ENUM("Route", wm8971_enum[8]);
191
192
193static const struct snd_kcontrol_new wm8971_right_line_controls =
194SOC_DAPM_ENUM("Route", wm8971_enum[9]);
195
196
197static const struct snd_kcontrol_new wm8971_left_pga_controls =
198SOC_DAPM_ENUM("Route", wm8971_enum[10]);
199
200
201static const struct snd_kcontrol_new wm8971_right_pga_controls =
202SOC_DAPM_ENUM("Route", wm8971_enum[11]);
203
204
205static const struct snd_kcontrol_new wm8971_monomux_controls =
206SOC_DAPM_ENUM("Route", wm8971_enum[13]);
207
208static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
209 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
210 &wm8971_left_mixer_controls[0],
211 ARRAY_SIZE(wm8971_left_mixer_controls)),
212 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
213 &wm8971_right_mixer_controls[0],
214 ARRAY_SIZE(wm8971_right_mixer_controls)),
215 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
216 &wm8971_mono_mixer_controls[0],
217 ARRAY_SIZE(wm8971_mono_mixer_controls)),
218
219 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
220 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
221 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
222 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
223 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
224 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
225 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
226
227 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
228 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
229 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
230
231 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
232 &wm8971_left_pga_controls),
233 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
234 &wm8971_right_pga_controls),
235 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
236 &wm8971_left_line_controls),
237 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
238 &wm8971_right_line_controls),
239
240 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
241 &wm8971_monomux_controls),
242 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
243 &wm8971_monomux_controls),
244
245 SND_SOC_DAPM_OUTPUT("LOUT1"),
246 SND_SOC_DAPM_OUTPUT("ROUT1"),
247 SND_SOC_DAPM_OUTPUT("LOUT2"),
248 SND_SOC_DAPM_OUTPUT("ROUT2"),
249 SND_SOC_DAPM_OUTPUT("MONO"),
250
251 SND_SOC_DAPM_INPUT("LINPUT1"),
252 SND_SOC_DAPM_INPUT("RINPUT1"),
253 SND_SOC_DAPM_INPUT("MIC"),
254};
255
256static const struct snd_soc_dapm_route audio_map[] = {
257
258 {"Left Mixer", "Playback Switch", "Left DAC"},
259 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
260 {"Left Mixer", "Right Playback Switch", "Right DAC"},
261 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
262
263
264 {"Right Mixer", "Left Playback Switch", "Left DAC"},
265 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
266 {"Right Mixer", "Playback Switch", "Right DAC"},
267 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
268
269
270 {"Left Out 1", NULL, "Left Mixer"},
271 {"LOUT1", NULL, "Left Out 1"},
272
273
274 {"Left Out 2", NULL, "Left Mixer"},
275 {"LOUT2", NULL, "Left Out 2"},
276
277
278 {"Right Out 1", NULL, "Right Mixer"},
279 {"ROUT1", NULL, "Right Out 1"},
280
281
282 {"Right Out 2", NULL, "Right Mixer"},
283 {"ROUT2", NULL, "Right Out 2"},
284
285
286 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
287 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
288 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
289 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
290
291
292 {"Mono Out", NULL, "Mono Mixer"},
293 {"MONO1", NULL, "Mono Out"},
294
295
296 {"Left Line Mux", "Line", "LINPUT1"},
297 {"Left Line Mux", "PGA", "Left PGA Mux"},
298 {"Left Line Mux", "Differential", "Differential Mux"},
299
300
301 {"Right Line Mux", "Line", "RINPUT1"},
302 {"Right Line Mux", "Mic", "MIC"},
303 {"Right Line Mux", "PGA", "Right PGA Mux"},
304 {"Right Line Mux", "Differential", "Differential Mux"},
305
306
307 {"Left PGA Mux", "Line", "LINPUT1"},
308 {"Left PGA Mux", "Differential", "Differential Mux"},
309
310
311 {"Right PGA Mux", "Line", "RINPUT1"},
312 {"Right PGA Mux", "Differential", "Differential Mux"},
313
314
315 {"Differential Mux", "Line", "LINPUT1"},
316 {"Differential Mux", "Line", "RINPUT1"},
317
318
319 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
320 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
321 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
322
323
324 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
325 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
326 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
327
328
329 {"Left ADC", NULL, "Left ADC Mux"},
330 {"Right ADC", NULL, "Right ADC Mux"},
331};
332
333static int wm8971_add_widgets(struct snd_soc_codec *codec)
334{
335 struct snd_soc_dapm_context *dapm = &codec->dapm;
336
337 snd_soc_dapm_new_controls(dapm, wm8971_dapm_widgets,
338 ARRAY_SIZE(wm8971_dapm_widgets));
339 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
340
341 return 0;
342}
343
344struct _coeff_div {
345 u32 mclk;
346 u32 rate;
347 u16 fs;
348 u8 sr:5;
349 u8 usb:1;
350};
351
352
353static const struct _coeff_div coeff_div[] = {
354
355 {12288000, 8000, 1536, 0x6, 0x0},
356 {11289600, 8000, 1408, 0x16, 0x0},
357 {18432000, 8000, 2304, 0x7, 0x0},
358 {16934400, 8000, 2112, 0x17, 0x0},
359 {12000000, 8000, 1500, 0x6, 0x1},
360
361
362 {11289600, 11025, 1024, 0x18, 0x0},
363 {16934400, 11025, 1536, 0x19, 0x0},
364 {12000000, 11025, 1088, 0x19, 0x1},
365
366
367 {12288000, 16000, 768, 0xa, 0x0},
368 {18432000, 16000, 1152, 0xb, 0x0},
369 {12000000, 16000, 750, 0xa, 0x1},
370
371
372 {11289600, 22050, 512, 0x1a, 0x0},
373 {16934400, 22050, 768, 0x1b, 0x0},
374 {12000000, 22050, 544, 0x1b, 0x1},
375
376
377 {12288000, 32000, 384, 0xc, 0x0},
378 {18432000, 32000, 576, 0xd, 0x0},
379 {12000000, 32000, 375, 0xa, 0x1},
380
381
382 {11289600, 44100, 256, 0x10, 0x0},
383 {16934400, 44100, 384, 0x11, 0x0},
384 {12000000, 44100, 272, 0x11, 0x1},
385
386
387 {12288000, 48000, 256, 0x0, 0x0},
388 {18432000, 48000, 384, 0x1, 0x0},
389 {12000000, 48000, 250, 0x0, 0x1},
390
391
392 {11289600, 88200, 128, 0x1e, 0x0},
393 {16934400, 88200, 192, 0x1f, 0x0},
394 {12000000, 88200, 136, 0x1f, 0x1},
395
396
397 {12288000, 96000, 128, 0xe, 0x0},
398 {18432000, 96000, 192, 0xf, 0x0},
399 {12000000, 96000, 125, 0xe, 0x1},
400};
401
402static int get_coeff(int mclk, int rate)
403{
404 int i;
405
406 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
407 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
408 return i;
409 }
410 return -EINVAL;
411}
412
413static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
414 int clk_id, unsigned int freq, int dir)
415{
416 struct snd_soc_codec *codec = codec_dai->codec;
417 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
418
419 switch (freq) {
420 case 11289600:
421 case 12000000:
422 case 12288000:
423 case 16934400:
424 case 18432000:
425 wm8971->sysclk = freq;
426 return 0;
427 }
428 return -EINVAL;
429}
430
431static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
432 unsigned int fmt)
433{
434 struct snd_soc_codec *codec = codec_dai->codec;
435 u16 iface = 0;
436
437
438 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
439 case SND_SOC_DAIFMT_CBM_CFM:
440 iface = 0x0040;
441 break;
442 case SND_SOC_DAIFMT_CBS_CFS:
443 break;
444 default:
445 return -EINVAL;
446 }
447
448
449 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
450 case SND_SOC_DAIFMT_I2S:
451 iface |= 0x0002;
452 break;
453 case SND_SOC_DAIFMT_RIGHT_J:
454 break;
455 case SND_SOC_DAIFMT_LEFT_J:
456 iface |= 0x0001;
457 break;
458 case SND_SOC_DAIFMT_DSP_A:
459 iface |= 0x0003;
460 break;
461 case SND_SOC_DAIFMT_DSP_B:
462 iface |= 0x0013;
463 break;
464 default:
465 return -EINVAL;
466 }
467
468
469 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
470 case SND_SOC_DAIFMT_NB_NF:
471 break;
472 case SND_SOC_DAIFMT_IB_IF:
473 iface |= 0x0090;
474 break;
475 case SND_SOC_DAIFMT_IB_NF:
476 iface |= 0x0080;
477 break;
478 case SND_SOC_DAIFMT_NB_IF:
479 iface |= 0x0010;
480 break;
481 default:
482 return -EINVAL;
483 }
484
485 snd_soc_write(codec, WM8971_IFACE, iface);
486 return 0;
487}
488
489static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
490 struct snd_pcm_hw_params *params,
491 struct snd_soc_dai *dai)
492{
493 struct snd_soc_pcm_runtime *rtd = substream->private_data;
494 struct snd_soc_codec *codec = rtd->codec;
495 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
496 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
497 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
498 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
499
500
501 switch (params_format(params)) {
502 case SNDRV_PCM_FORMAT_S16_LE:
503 break;
504 case SNDRV_PCM_FORMAT_S20_3LE:
505 iface |= 0x0004;
506 break;
507 case SNDRV_PCM_FORMAT_S24_LE:
508 iface |= 0x0008;
509 break;
510 case SNDRV_PCM_FORMAT_S32_LE:
511 iface |= 0x000c;
512 break;
513 }
514
515
516 snd_soc_write(codec, WM8971_IFACE, iface);
517 if (coeff >= 0)
518 snd_soc_write(codec, WM8971_SRATE, srate |
519 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
520
521 return 0;
522}
523
524static int wm8971_mute(struct snd_soc_dai *dai, int mute)
525{
526 struct snd_soc_codec *codec = dai->codec;
527 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
528
529 if (mute)
530 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
531 else
532 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
533 return 0;
534}
535
536static int wm8971_set_bias_level(struct snd_soc_codec *codec,
537 enum snd_soc_bias_level level)
538{
539 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
540
541 switch (level) {
542 case SND_SOC_BIAS_ON:
543
544 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
545 break;
546 case SND_SOC_BIAS_PREPARE:
547 break;
548 case SND_SOC_BIAS_STANDBY:
549
550 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
551 break;
552 case SND_SOC_BIAS_OFF:
553 snd_soc_write(codec, WM8971_PWR1, 0x0001);
554 break;
555 }
556 codec->dapm.bias_level = level;
557 return 0;
558}
559
560#define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
561 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
562 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
563
564#define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
565 SNDRV_PCM_FMTBIT_S24_LE)
566
567static struct snd_soc_dai_ops wm8971_dai_ops = {
568 .hw_params = wm8971_pcm_hw_params,
569 .digital_mute = wm8971_mute,
570 .set_fmt = wm8971_set_dai_fmt,
571 .set_sysclk = wm8971_set_dai_sysclk,
572};
573
574static struct snd_soc_dai_driver wm8971_dai = {
575 .name = "wm8971-hifi",
576 .playback = {
577 .stream_name = "Playback",
578 .channels_min = 1,
579 .channels_max = 2,
580 .rates = WM8971_RATES,
581 .formats = WM8971_FORMATS,},
582 .capture = {
583 .stream_name = "Capture",
584 .channels_min = 1,
585 .channels_max = 2,
586 .rates = WM8971_RATES,
587 .formats = WM8971_FORMATS,},
588 .ops = &wm8971_dai_ops,
589};
590
591static void wm8971_work(struct work_struct *work)
592{
593 struct snd_soc_dapm_context *dapm =
594 container_of(work, struct snd_soc_dapm_context,
595 delayed_work.work);
596 struct snd_soc_codec *codec = dapm->codec;
597 wm8971_set_bias_level(codec, codec->dapm.bias_level);
598}
599
600static int wm8971_suspend(struct snd_soc_codec *codec, pm_message_t state)
601{
602 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
603 return 0;
604}
605
606static int wm8971_resume(struct snd_soc_codec *codec)
607{
608 int i;
609 u8 data[2];
610 u16 *cache = codec->reg_cache;
611 u16 reg;
612
613
614 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
615 if (i + 1 == WM8971_RESET)
616 continue;
617 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
618 data[1] = cache[i] & 0x00ff;
619 codec->hw_write(codec->control_data, data, 2);
620 }
621
622 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
623
624
625 if (codec->dapm.suspend_bias_level == SND_SOC_BIAS_ON) {
626 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
627 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
628 codec->dapm.bias_level = SND_SOC_BIAS_ON;
629 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
630 msecs_to_jiffies(1000));
631 }
632
633 return 0;
634}
635
636static int wm8971_probe(struct snd_soc_codec *codec)
637{
638 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
639 int ret = 0;
640 u16 reg;
641
642 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8971->control_type);
643 if (ret < 0) {
644 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
645 return ret;
646 }
647
648 INIT_DELAYED_WORK(&codec->dapm.delayed_work, wm8971_work);
649 wm8971_workq = create_workqueue("wm8971");
650 if (wm8971_workq == NULL)
651 return -ENOMEM;
652
653 wm8971_reset(codec);
654
655
656 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
657 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
658 codec->dapm.bias_level = SND_SOC_BIAS_STANDBY;
659 queue_delayed_work(wm8971_workq, &codec->dapm.delayed_work,
660 msecs_to_jiffies(1000));
661
662
663 reg = snd_soc_read(codec, WM8971_LDAC);
664 snd_soc_write(codec, WM8971_LDAC, reg | 0x0100);
665 reg = snd_soc_read(codec, WM8971_RDAC);
666 snd_soc_write(codec, WM8971_RDAC, reg | 0x0100);
667
668 reg = snd_soc_read(codec, WM8971_LOUT1V);
669 snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100);
670 reg = snd_soc_read(codec, WM8971_ROUT1V);
671 snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100);
672
673 reg = snd_soc_read(codec, WM8971_LOUT2V);
674 snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100);
675 reg = snd_soc_read(codec, WM8971_ROUT2V);
676 snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100);
677
678 reg = snd_soc_read(codec, WM8971_LINVOL);
679 snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100);
680 reg = snd_soc_read(codec, WM8971_RINVOL);
681 snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100);
682
683 snd_soc_add_controls(codec, wm8971_snd_controls,
684 ARRAY_SIZE(wm8971_snd_controls));
685 wm8971_add_widgets(codec);
686
687 return ret;
688}
689
690
691
692static int wm8971_remove(struct snd_soc_codec *codec)
693{
694 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
695
696 if (wm8971_workq)
697 destroy_workqueue(wm8971_workq);
698 return 0;
699}
700
701static struct snd_soc_codec_driver soc_codec_dev_wm8971 = {
702 .probe = wm8971_probe,
703 .remove = wm8971_remove,
704 .suspend = wm8971_suspend,
705 .resume = wm8971_resume,
706 .set_bias_level = wm8971_set_bias_level,
707 .reg_cache_size = ARRAY_SIZE(wm8971_reg),
708 .reg_word_size = sizeof(u16),
709 .reg_cache_default = wm8971_reg,
710};
711
712#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
713static __devinit int wm8971_i2c_probe(struct i2c_client *i2c,
714 const struct i2c_device_id *id)
715{
716 struct wm8971_priv *wm8971;
717 int ret;
718
719 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
720 if (wm8971 == NULL)
721 return -ENOMEM;
722
723 wm8971->control_type = SND_SOC_I2C;
724 i2c_set_clientdata(i2c, wm8971);
725
726 ret = snd_soc_register_codec(&i2c->dev,
727 &soc_codec_dev_wm8971, &wm8971_dai, 1);
728 if (ret < 0)
729 kfree(wm8971);
730 return ret;
731}
732
733static __devexit int wm8971_i2c_remove(struct i2c_client *client)
734{
735 snd_soc_unregister_codec(&client->dev);
736 kfree(i2c_get_clientdata(client));
737 return 0;
738}
739
740static const struct i2c_device_id wm8971_i2c_id[] = {
741 { "wm8971", 0 },
742 { }
743};
744MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
745
746static struct i2c_driver wm8971_i2c_driver = {
747 .driver = {
748 .name = "wm8971-codec",
749 .owner = THIS_MODULE,
750 },
751 .probe = wm8971_i2c_probe,
752 .remove = __devexit_p(wm8971_i2c_remove),
753 .id_table = wm8971_i2c_id,
754};
755#endif
756
757static int __init wm8971_modinit(void)
758{
759 int ret = 0;
760#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
761 ret = i2c_add_driver(&wm8971_i2c_driver);
762 if (ret != 0) {
763 printk(KERN_ERR "Failed to register WM8971 I2C driver: %d\n",
764 ret);
765 }
766#endif
767 return ret;
768}
769module_init(wm8971_modinit);
770
771static void __exit wm8971_exit(void)
772{
773#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
774 i2c_del_driver(&wm8971_i2c_driver);
775#endif
776}
777module_exit(wm8971_exit);
778
779MODULE_DESCRIPTION("ASoC WM8971 driver");
780MODULE_AUTHOR("Lab126");
781MODULE_LICENSE("GPL");
782
