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ASoC: multi-component - ASoC Multi-Component Support
[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>
22#include <linux/platform_device.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>
28#include <sound/soc-dapm.h>
29#include <sound/initval.h>
30
31#include "wm8971.h"
32
8bae3e23
KK		 33#define WM8971_VERSION "0.9"
34
35#define WM8971_REG_COUNT 43
36
37static struct workqueue_struct *wm8971_workq = NULL;
38
39/* codec private data */
40struct wm8971_priv {
f0fba2ad
LG		 41 enum snd_soc_control_type control_type;
42 void *control_data;
8bae3e23
KK		 43 unsigned int sysclk;
44};
45
46/*
47 * wm8971 register cache
48 * We can't read the WM8971 register space when we
49 * are using 2 wire for device control, so we cache them instead.
50 */
51static const u16 wm8971_reg[] = {
52 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
53 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
54 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
55 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
56 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
57 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
58 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
59 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
60 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
61 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
62 0x0079, 0x0079, 0x0079, /* 40 */
63};
64
17a52fd6 65#define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
8bae3e23
KK		 66
67/* WM8971 Controls */
68static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
69static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
70 "200Hz @ 48kHz" };
71static const char *wm8971_treble[] = { "8kHz", "4kHz" };
72static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
73static const char *wm8971_ng_type[] = { "Constant PGA Gain",
74 "Mute ADC Output" };
75static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
76static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
77 "Mono (Right)", "Digital Mono"};
78static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
79static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
80 "Differential"};
81static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
82 "Differential"};
83static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
84static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
85static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
86 "L + R Invert"};
87
88static const struct soc_enum wm8971_enum[] = {
89 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */
90 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
91 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
92 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
93 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */
94 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
95 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
96 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
97 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
98 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
99 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
100 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
101 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */
102 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
103};
104
105static const struct snd_kcontrol_new wm8971_snd_controls[] = {
106 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
107 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
108 6, 1, 0),
109 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
110
111 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
112 WM8971_ROUT1V, 7, 1, 0),
113 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
114 WM8971_ROUT2V, 7, 1, 0),
115 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
116
117 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
118
119 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
120 WM8971_LOUTM2, 4, 7, 1),
121 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
122 WM8971_ROUTM2, 4, 7, 1),
123 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
124 WM8971_MOUTM2, 4, 7, 1),
125
126 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
127 WM8971_ROUT1V, 0, 127, 0),
128 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
129 WM8971_ROUT2V, 0, 127, 0),
130
131 SOC_ENUM("Bass Boost", wm8971_enum[0]),
132 SOC_ENUM("Bass Filter", wm8971_enum[1]),
133 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
134
135 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
136 SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
137
138 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
139
140 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
141 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
142
143 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
144 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
145 SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
146 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
147 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
148 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
149 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
150 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
151 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
152 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
153
154 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
155 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
156
157 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
158 SOC_ENUM("Playback Function", wm8971_enum[6]),
159 SOC_ENUM("Playback Phase", wm8971_enum[7]),
160
161 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
162};
163
8bae3e23
KK		 164/*
165 * DAPM Controls
166 */
167
168/* Left Mixer */
169static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
170SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
171SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
172SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
173SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
174};
175
176/* Right Mixer */
177static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
178SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
179SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
180SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
181SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
182};
183
184/* Mono Mixer */
185static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
186SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
187SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
188SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
189SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
190};
191
192/* Left Line Mux */
193static const struct snd_kcontrol_new wm8971_left_line_controls =
194SOC_DAPM_ENUM("Route", wm8971_enum[8]);
195
196/* Right Line Mux */
197static const struct snd_kcontrol_new wm8971_right_line_controls =
198SOC_DAPM_ENUM("Route", wm8971_enum[9]);
199
200/* Left PGA Mux */
201static const struct snd_kcontrol_new wm8971_left_pga_controls =
202SOC_DAPM_ENUM("Route", wm8971_enum[10]);
203
204/* Right PGA Mux */
205static const struct snd_kcontrol_new wm8971_right_pga_controls =
206SOC_DAPM_ENUM("Route", wm8971_enum[11]);
207
208/* Mono ADC Mux */
209static const struct snd_kcontrol_new wm8971_monomux_controls =
210SOC_DAPM_ENUM("Route", wm8971_enum[13]);
211
212static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
213 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
214 &wm8971_left_mixer_controls[0],
215 ARRAY_SIZE(wm8971_left_mixer_controls)),
216 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
217 &wm8971_right_mixer_controls[0],
218 ARRAY_SIZE(wm8971_right_mixer_controls)),
219 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
220 &wm8971_mono_mixer_controls[0],
221 ARRAY_SIZE(wm8971_mono_mixer_controls)),
222
223 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
224 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
225 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
226 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
227 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
228 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
229 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
230
231 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
232 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
233 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
234
235 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
236 &wm8971_left_pga_controls),
237 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
238 &wm8971_right_pga_controls),
239 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
240 &wm8971_left_line_controls),
241 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
242 &wm8971_right_line_controls),
243
244 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
245 &wm8971_monomux_controls),
246 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
247 &wm8971_monomux_controls),
248
249 SND_SOC_DAPM_OUTPUT("LOUT1"),
250 SND_SOC_DAPM_OUTPUT("ROUT1"),
251 SND_SOC_DAPM_OUTPUT("LOUT2"),
252 SND_SOC_DAPM_OUTPUT("ROUT2"),
253 SND_SOC_DAPM_OUTPUT("MONO"),
254
255 SND_SOC_DAPM_INPUT("LINPUT1"),
256 SND_SOC_DAPM_INPUT("RINPUT1"),
257 SND_SOC_DAPM_INPUT("MIC"),
258};
259
260static const struct snd_soc_dapm_route audio_map[] = {
261 /* left mixer */
262 {"Left Mixer", "Playback Switch", "Left DAC"},
263 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
264 {"Left Mixer", "Right Playback Switch", "Right DAC"},
265 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
266
267 /* right mixer */
268 {"Right Mixer", "Left Playback Switch", "Left DAC"},
269 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
270 {"Right Mixer", "Playback Switch", "Right DAC"},
271 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
272
273 /* left out 1 */
274 {"Left Out 1", NULL, "Left Mixer"},
275 {"LOUT1", NULL, "Left Out 1"},
276
277 /* left out 2 */
278 {"Left Out 2", NULL, "Left Mixer"},
279 {"LOUT2", NULL, "Left Out 2"},
280
281 /* right out 1 */
282 {"Right Out 1", NULL, "Right Mixer"},
283 {"ROUT1", NULL, "Right Out 1"},
284
285 /* right out 2 */
286 {"Right Out 2", NULL, "Right Mixer"},
287 {"ROUT2", NULL, "Right Out 2"},
288
289 /* mono mixer */
290 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
291 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
292 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
293 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
294
295 /* mono out */
296 {"Mono Out", NULL, "Mono Mixer"},
297 {"MONO1", NULL, "Mono Out"},
298
299 /* Left Line Mux */
300 {"Left Line Mux", "Line", "LINPUT1"},
301 {"Left Line Mux", "PGA", "Left PGA Mux"},
302 {"Left Line Mux", "Differential", "Differential Mux"},
303
304 /* Right Line Mux */
305 {"Right Line Mux", "Line", "RINPUT1"},
306 {"Right Line Mux", "Mic", "MIC"},
307 {"Right Line Mux", "PGA", "Right PGA Mux"},
308 {"Right Line Mux", "Differential", "Differential Mux"},
309
310 /* Left PGA Mux */
311 {"Left PGA Mux", "Line", "LINPUT1"},
312 {"Left PGA Mux", "Differential", "Differential Mux"},
313
314 /* Right PGA Mux */
315 {"Right PGA Mux", "Line", "RINPUT1"},
316 {"Right PGA Mux", "Differential", "Differential Mux"},
317
318 /* Differential Mux */
319 {"Differential Mux", "Line", "LINPUT1"},
320 {"Differential Mux", "Line", "RINPUT1"},
321
322 /* Left ADC Mux */
323 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
324 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
325 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
326
327 /* Right ADC Mux */
328 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
329 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
330 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
331
332 /* ADC */
333 {"Left ADC", NULL, "Left ADC Mux"},
334 {"Right ADC", NULL, "Right ADC Mux"},
335};
336
337static int wm8971_add_widgets(struct snd_soc_codec *codec)
338{
339 snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
340 ARRAY_SIZE(wm8971_dapm_widgets));
341
342 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
343
8bae3e23
KK		 344 return 0;
345}
346
347struct _coeff_div {
348 u32 mclk;
349 u32 rate;
350 u16 fs;
351 u8 sr:5;
352 u8 usb:1;
353};
354
355/* codec hifi mclk clock divider coefficients */
356static const struct _coeff_div coeff_div[] = {
357 /* 8k */
358 {12288000, 8000, 1536, 0x6, 0x0},
359 {11289600, 8000, 1408, 0x16, 0x0},
360 {18432000, 8000, 2304, 0x7, 0x0},
361 {16934400, 8000, 2112, 0x17, 0x0},
362 {12000000, 8000, 1500, 0x6, 0x1},
363
364 /* 11.025k */
365 {11289600, 11025, 1024, 0x18, 0x0},
366 {16934400, 11025, 1536, 0x19, 0x0},
367 {12000000, 11025, 1088, 0x19, 0x1},
368
369 /* 16k */
370 {12288000, 16000, 768, 0xa, 0x0},
371 {18432000, 16000, 1152, 0xb, 0x0},
372 {12000000, 16000, 750, 0xa, 0x1},
373
374 /* 22.05k */
375 {11289600, 22050, 512, 0x1a, 0x0},
376 {16934400, 22050, 768, 0x1b, 0x0},
377 {12000000, 22050, 544, 0x1b, 0x1},
378
379 /* 32k */
380 {12288000, 32000, 384, 0xc, 0x0},
381 {18432000, 32000, 576, 0xd, 0x0},
382 {12000000, 32000, 375, 0xa, 0x1},
383
384 /* 44.1k */
385 {11289600, 44100, 256, 0x10, 0x0},
386 {16934400, 44100, 384, 0x11, 0x0},
387 {12000000, 44100, 272, 0x11, 0x1},
388
389 /* 48k */
390 {12288000, 48000, 256, 0x0, 0x0},
391 {18432000, 48000, 384, 0x1, 0x0},
392 {12000000, 48000, 250, 0x0, 0x1},
393
394 /* 88.2k */
395 {11289600, 88200, 128, 0x1e, 0x0},
396 {16934400, 88200, 192, 0x1f, 0x0},
397 {12000000, 88200, 136, 0x1f, 0x1},
398
399 /* 96k */
400 {12288000, 96000, 128, 0xe, 0x0},
401 {18432000, 96000, 192, 0xf, 0x0},
402 {12000000, 96000, 125, 0xe, 0x1},
403};
404
405static int get_coeff(int mclk, int rate)
406{
407 int i;
408
409 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
410 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
411 return i;
412 }
413 return -EINVAL;
414}
415
416static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
417 int clk_id, unsigned int freq, int dir)
418{
419 struct snd_soc_codec *codec = codec_dai->codec;
b2c812e2 420 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
8bae3e23
KK		 421
422 switch (freq) {
423 case 11289600:
424 case 12000000:
425 case 12288000:
426 case 16934400:
427 case 18432000:
428 wm8971->sysclk = freq;
429 return 0;
430 }
431 return -EINVAL;
432}
433
434static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
435 unsigned int fmt)
436{
437 struct snd_soc_codec *codec = codec_dai->codec;
438 u16 iface = 0;
439
440 /* set master/slave audio interface */
441 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
442 case SND_SOC_DAIFMT_CBM_CFM:
443 iface = 0x0040;
444 break;
445 case SND_SOC_DAIFMT_CBS_CFS:
446 break;
447 default:
448 return -EINVAL;
449 }
450
451 /* interface format */
452 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
453 case SND_SOC_DAIFMT_I2S:
454 iface |= 0x0002;
455 break;
456 case SND_SOC_DAIFMT_RIGHT_J:
457 break;
458 case SND_SOC_DAIFMT_LEFT_J:
459 iface |= 0x0001;
460 break;
461 case SND_SOC_DAIFMT_DSP_A:
462 iface |= 0x0003;
463 break;
464 case SND_SOC_DAIFMT_DSP_B:
465 iface |= 0x0013;
466 break;
467 default:
468 return -EINVAL;
469 }
470
471 /* clock inversion */
472 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
473 case SND_SOC_DAIFMT_NB_NF:
474 break;
475 case SND_SOC_DAIFMT_IB_IF:
476 iface |= 0x0090;
477 break;
478 case SND_SOC_DAIFMT_IB_NF:
479 iface |= 0x0080;
480 break;
481 case SND_SOC_DAIFMT_NB_IF:
482 iface |= 0x0010;
483 break;
484 default:
485 return -EINVAL;
486 }
487
17a52fd6 488 snd_soc_write(codec, WM8971_IFACE, iface);
8bae3e23
KK		 489 return 0;
490}
491
492static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
dee89c4d
MB		 493 struct snd_pcm_hw_params *params,
494 struct snd_soc_dai *dai)
8bae3e23
KK		 495{
496 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad 497 struct snd_soc_codec *codec = rtd->codec;
b2c812e2 498 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
17a52fd6
MB		 499 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
500 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
8bae3e23
KK		 501 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
502
503 /* bit size */
504 switch (params_format(params)) {
505 case SNDRV_PCM_FORMAT_S16_LE:
506 break;
507 case SNDRV_PCM_FORMAT_S20_3LE:
508 iface |= 0x0004;
509 break;
510 case SNDRV_PCM_FORMAT_S24_LE:
511 iface |= 0x0008;
512 break;
513 case SNDRV_PCM_FORMAT_S32_LE:
514 iface |= 0x000c;
515 break;
516 }
517
518 /* set iface & srate */
17a52fd6 519 snd_soc_write(codec, WM8971_IFACE, iface);
8bae3e23 520 if (coeff >= 0)
17a52fd6 521 snd_soc_write(codec, WM8971_SRATE, srate |
8bae3e23
KK		 522 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
523
524 return 0;
525}
526
527static int wm8971_mute(struct snd_soc_dai *dai, int mute)
528{
529 struct snd_soc_codec *codec = dai->codec;
17a52fd6 530 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
8bae3e23
KK		 531
532 if (mute)
17a52fd6 533 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
8bae3e23 534 else
17a52fd6 535 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
8bae3e23
KK		 536 return 0;
537}
538
539static int wm8971_set_bias_level(struct snd_soc_codec *codec,
540 enum snd_soc_bias_level level)
541{
17a52fd6 542 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
8bae3e23
KK		 543
544 switch (level) {
545 case SND_SOC_BIAS_ON:
546 /* set vmid to 50k and unmute dac */
17a52fd6 547 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
8bae3e23
KK		 548 break;
549 case SND_SOC_BIAS_PREPARE:
550 break;
551 case SND_SOC_BIAS_STANDBY:
552 /* mute dac and set vmid to 500k, enable VREF */
17a52fd6 553 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
8bae3e23
KK		 554 break;
555 case SND_SOC_BIAS_OFF:
17a52fd6 556 snd_soc_write(codec, WM8971_PWR1, 0x0001);
8bae3e23
KK		 557 break;
558 }
559 codec->bias_level = level;
560 return 0;
561}
562
563#define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
564 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
565 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
566
567#define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
568 SNDRV_PCM_FMTBIT_S24_LE)
569
6335d055
EM		 570static struct snd_soc_dai_ops wm8971_dai_ops = {
571 .hw_params = wm8971_pcm_hw_params,
572 .digital_mute = wm8971_mute,
573 .set_fmt = wm8971_set_dai_fmt,
574 .set_sysclk = wm8971_set_dai_sysclk,
575};
576
f0fba2ad
LG		 577static struct snd_soc_dai_driver wm8971_dai = {
578 .name = "wm8971-hifi",
8bae3e23
KK		 579 .playback = {
580 .stream_name = "Playback",
581 .channels_min = 1,
582 .channels_max = 2,
583 .rates = WM8971_RATES,
584 .formats = WM8971_FORMATS,},
585 .capture = {
586 .stream_name = "Capture",
587 .channels_min = 1,
588 .channels_max = 2,
589 .rates = WM8971_RATES,
590 .formats = WM8971_FORMATS,},
6335d055 591 .ops = &wm8971_dai_ops,
8bae3e23 592};
8bae3e23
KK		 593
594static void wm8971_work(struct work_struct *work)
595{
596 struct snd_soc_codec *codec =
597 container_of(work, struct snd_soc_codec, delayed_work.work);
598 wm8971_set_bias_level(codec, codec->bias_level);
599}
600
f0fba2ad 601static int wm8971_suspend(struct snd_soc_codec *codec, pm_message_t state)
8bae3e23 602{
8bae3e23
KK		 603 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
604 return 0;
605}
606
f0fba2ad 607static int wm8971_resume(struct snd_soc_codec *codec)
8bae3e23 608{
8bae3e23
KK		 609 int i;
610 u8 data[2];
611 u16 *cache = codec->reg_cache;
612 u16 reg;
613
614 /* Sync reg_cache with the hardware */
615 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
616 if (i + 1 == WM8971_RESET)
617 continue;
618 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
619 data[1] = cache[i] & 0x00ff;
620 codec->hw_write(codec->control_data, data, 2);
621 }
622
623 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
624
625 /* charge wm8971 caps */
626 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
17a52fd6
MB		 627 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
628 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
8bae3e23
KK		 629 codec->bias_level = SND_SOC_BIAS_ON;
630 queue_delayed_work(wm8971_workq, &codec->delayed_work,
631 msecs_to_jiffies(1000));
632 }
633
634 return 0;
635}
636
f0fba2ad 637static int wm8971_probe(struct snd_soc_codec *codec)
8bae3e23 638{
f0fba2ad
LG		 639 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
640 int ret = 0;
641 u16 reg;
642
643 pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
8bae3e23 644
f0fba2ad
LG		 645 codec->control_data = wm8971->control_data;
646 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8971->control_type);
17a52fd6
MB		 647 if (ret < 0) {
648 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
f0fba2ad 649 return ret;
17a52fd6
MB		 650 }
651
f0fba2ad
LG		 652 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
653 wm8971_workq = create_workqueue("wm8971");
654 if (wm8971_workq == NULL)
655 return -ENOMEM;
8bae3e23 656
f0fba2ad 657 wm8971_reset(codec);
8bae3e23
KK		 658
659 /* charge output caps - set vmid to 5k for quick power up */
17a52fd6
MB		 660 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
661 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
8bae3e23
KK		 662 codec->bias_level = SND_SOC_BIAS_STANDBY;
663 queue_delayed_work(wm8971_workq, &codec->delayed_work,
664 msecs_to_jiffies(1000));
665
666 /* set the update bits */
17a52fd6
MB		 667 reg = snd_soc_read(codec, WM8971_LDAC);
668 snd_soc_write(codec, WM8971_LDAC, reg | 0x0100);
669 reg = snd_soc_read(codec, WM8971_RDAC);
670 snd_soc_write(codec, WM8971_RDAC, reg | 0x0100);
671
672 reg = snd_soc_read(codec, WM8971_LOUT1V);
673 snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100);
674 reg = snd_soc_read(codec, WM8971_ROUT1V);
675 snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100);
676
677 reg = snd_soc_read(codec, WM8971_LOUT2V);
678 snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100);
679 reg = snd_soc_read(codec, WM8971_ROUT2V);
680 snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100);
681
682 reg = snd_soc_read(codec, WM8971_LINVOL);
683 snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100);
684 reg = snd_soc_read(codec, WM8971_RINVOL);
685 snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100);
8bae3e23 686
3e8e1952
IM		 687 snd_soc_add_controls(codec, wm8971_snd_controls,
688 ARRAY_SIZE(wm8971_snd_controls));
8bae3e23 689 wm8971_add_widgets(codec);
fe3e78e0 690
8bae3e23 691 return ret;
8bae3e23
KK		 692}
693
8bae3e23 694
f0fba2ad
LG		 695/* power down chip */
696static int wm8971_remove(struct snd_soc_codec *codec)
697{
698 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
699
700 if (wm8971_workq)
701 destroy_workqueue(wm8971_workq);
702 return 0;
703}
704
705static struct snd_soc_codec_driver soc_codec_dev_wm8971 = {
706 .probe = wm8971_probe,
707 .remove = wm8971_remove,
708 .suspend = wm8971_suspend,
709 .resume = wm8971_resume,
710 .set_bias_level = wm8971_set_bias_level,
711 .reg_cache_size = ARRAY_SIZE(wm8971_reg),
712 .reg_word_size = sizeof(u16),
713 .reg_cache_default = wm8971_reg,
714};
8bae3e23 715
f0fba2ad
LG		 716#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
717static __devinit int wm8971_i2c_probe(struct i2c_client *i2c,
718 const struct i2c_device_id *id)
8bae3e23 719{
f0fba2ad 720 struct wm8971_priv *wm8971;
8bae3e23
KK		 721 int ret;
722
f0fba2ad
LG		 723 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
724 if (wm8971 == NULL)
725 return -ENOMEM;
8bae3e23 726
f0fba2ad
LG		 727 i2c_set_clientdata(i2c, wm8971);
728 wm8971->control_data = i2c;
8bae3e23 729
f0fba2ad
LG		 730 ret = snd_soc_register_codec(&i2c->dev,
731 &soc_codec_dev_wm8971, &wm8971_dai, 1);
8bae3e23 732 if (ret < 0)
f0fba2ad 733 kfree(wm8971);
8bae3e23
KK		 734 return ret;
735}
736
f0fba2ad 737static __devexit int wm8971_i2c_remove(struct i2c_client *client)
8bae3e23 738{
f0fba2ad
LG		 739 snd_soc_unregister_codec(&client->dev);
740 kfree(i2c_get_clientdata(client));
8bae3e23
KK		 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 = {
f0fba2ad 752 .name = "wm8971-codec",
8bae3e23
KK		 753 .owner = THIS_MODULE,
754 },
f0fba2ad
LG		 755 .probe = wm8971_i2c_probe,
756 .remove = __devexit_p(wm8971_i2c_remove),
8bae3e23
KK		 757 .id_table = wm8971_i2c_id,
758};
8bae3e23
KK		 759#endif
760
f0fba2ad 761static int __init wm8971_modinit(void)
8bae3e23 762{
8bae3e23 763 int ret = 0;
f0fba2ad
LG		 764#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
765 ret = i2c_add_driver(&wm8971_i2c_driver);
8bae3e23 766 if (ret != 0) {
f0fba2ad
LG		 767 printk(KERN_ERR "Failed to register WM8971 I2C driver: %d\n",
768 ret);
8bae3e23 769 }
8bae3e23 770#endif
f0fba2ad 771 return ret;
64089b84
MB		 772}
773module_init(wm8971_modinit);
774
775static void __exit wm8971_exit(void)
776{
f0fba2ad
LG		 777#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
778 i2c_del_driver(&wm8971_i2c_driver);
779#endif
64089b84
MB		 780}
781module_exit(wm8971_exit);
782
8bae3e23
KK		 783MODULE_DESCRIPTION("ASoC WM8971 driver");
784MODULE_AUTHOR("Lab126");
785MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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