projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
sound: ASoC: Add WM8971 CODEC driver
[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>
23#include <sound/core.h>
24#include <sound/pcm.h>
25#include <sound/pcm_params.h>
26#include <sound/soc.h>
27#include <sound/soc-dapm.h>
28#include <sound/initval.h>
29
30#include "wm8971.h"
31
32#define AUDIO_NAME "wm8971"
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 {
41 unsigned int sysclk;
42};
43
44/*
45 * wm8971 register cache
46 * We can't read the WM8971 register space when we
47 * are using 2 wire for device control, so we cache them instead.
48 */
49static const u16 wm8971_reg[] = {
50 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
51 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
52 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
53 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
54 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
55 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
56 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
57 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
58 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
59 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
60 0x0079, 0x0079, 0x0079, /* 40 */
61};
62
63static inline unsigned int wm8971_read_reg_cache(struct snd_soc_codec *codec,
64 unsigned int reg)
65{
66 u16 *cache = codec->reg_cache;
67 if (reg < WM8971_REG_COUNT)
68 return cache[reg];
69
70 return -1;
71}
72
73static inline void wm8971_write_reg_cache(struct snd_soc_codec *codec,
74 unsigned int reg, unsigned int value)
75{
76 u16 *cache = codec->reg_cache;
77 if (reg < WM8971_REG_COUNT)
78 cache[reg] = value;
79}
80
81static int wm8971_write(struct snd_soc_codec *codec, unsigned int reg,
82 unsigned int value)
83{
84 u8 data[2];
85
86 /* data is
87 * D15..D9 WM8753 register offset
88 * D8...D0 register data
89 */
90 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
91 data[1] = value & 0x00ff;
92
93 wm8971_write_reg_cache (codec, reg, value);
94 if (codec->hw_write(codec->control_data, data, 2) == 2)
95 return 0;
96 else
97 return -EIO;
98}
99
100#define wm8971_reset(c) wm8971_write(c, WM8971_RESET, 0)
101
102/* WM8971 Controls */
103static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
104static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
105 "200Hz @ 48kHz" };
106static const char *wm8971_treble[] = { "8kHz", "4kHz" };
107static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
108static const char *wm8971_ng_type[] = { "Constant PGA Gain",
109 "Mute ADC Output" };
110static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
111static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
112 "Mono (Right)", "Digital Mono"};
113static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
114static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
115 "Differential"};
116static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
117 "Differential"};
118static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
119static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
120static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
121 "L + R Invert"};
122
123static const struct soc_enum wm8971_enum[] = {
124 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */
125 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
126 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
127 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
128 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */
129 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
130 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
131 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
132 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
133 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
134 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
135 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
136 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */
137 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
138};
139
140static const struct snd_kcontrol_new wm8971_snd_controls[] = {
141 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
142 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
143 6, 1, 0),
144 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
145
146 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
147 WM8971_ROUT1V, 7, 1, 0),
148 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
149 WM8971_ROUT2V, 7, 1, 0),
150 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
151
152 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
153
154 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
155 WM8971_LOUTM2, 4, 7, 1),
156 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
157 WM8971_ROUTM2, 4, 7, 1),
158 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
159 WM8971_MOUTM2, 4, 7, 1),
160
161 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
162 WM8971_ROUT1V, 0, 127, 0),
163 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
164 WM8971_ROUT2V, 0, 127, 0),
165
166 SOC_ENUM("Bass Boost", wm8971_enum[0]),
167 SOC_ENUM("Bass Filter", wm8971_enum[1]),
168 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
169
170 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
171 SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
172
173 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
174
175 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
176 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
177
178 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
179 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
180 SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
181 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
182 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
183 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
184 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
185 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
186 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
187 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
188
189 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
190 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
191
192 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
193 SOC_ENUM("Playback Function", wm8971_enum[6]),
194 SOC_ENUM("Playback Phase", wm8971_enum[7]),
195
196 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
197};
198
199/* add non-DAPM controls */
200static int wm8971_add_controls(struct snd_soc_codec *codec)
201{
202 int err, i;
203
204 for (i = 0; i < ARRAY_SIZE(wm8971_snd_controls); i++) {
205 err = snd_ctl_add(codec->card,
206 snd_soc_cnew(&wm8971_snd_controls[i],
207 codec, NULL));
208 if (err < 0)
209 return err;
210 }
211 return 0;
212}
213
214/*
215 * DAPM Controls
216 */
217
218/* Left Mixer */
219static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
220SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
221SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
222SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
223SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
224};
225
226/* Right Mixer */
227static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
228SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
229SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
230SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
231SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
232};
233
234/* Mono Mixer */
235static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
236SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
237SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
238SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
239SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
240};
241
242/* Left Line Mux */
243static const struct snd_kcontrol_new wm8971_left_line_controls =
244SOC_DAPM_ENUM("Route", wm8971_enum[8]);
245
246/* Right Line Mux */
247static const struct snd_kcontrol_new wm8971_right_line_controls =
248SOC_DAPM_ENUM("Route", wm8971_enum[9]);
249
250/* Left PGA Mux */
251static const struct snd_kcontrol_new wm8971_left_pga_controls =
252SOC_DAPM_ENUM("Route", wm8971_enum[10]);
253
254/* Right PGA Mux */
255static const struct snd_kcontrol_new wm8971_right_pga_controls =
256SOC_DAPM_ENUM("Route", wm8971_enum[11]);
257
258/* Mono ADC Mux */
259static const struct snd_kcontrol_new wm8971_monomux_controls =
260SOC_DAPM_ENUM("Route", wm8971_enum[13]);
261
262static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
263 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
264 &wm8971_left_mixer_controls[0],
265 ARRAY_SIZE(wm8971_left_mixer_controls)),
266 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
267 &wm8971_right_mixer_controls[0],
268 ARRAY_SIZE(wm8971_right_mixer_controls)),
269 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
270 &wm8971_mono_mixer_controls[0],
271 ARRAY_SIZE(wm8971_mono_mixer_controls)),
272
273 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
274 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
275 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
276 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
277 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
278 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
279 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
280
281 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
282 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
283 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
284
285 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
286 &wm8971_left_pga_controls),
287 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
288 &wm8971_right_pga_controls),
289 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
290 &wm8971_left_line_controls),
291 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
292 &wm8971_right_line_controls),
293
294 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
295 &wm8971_monomux_controls),
296 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
297 &wm8971_monomux_controls),
298
299 SND_SOC_DAPM_OUTPUT("LOUT1"),
300 SND_SOC_DAPM_OUTPUT("ROUT1"),
301 SND_SOC_DAPM_OUTPUT("LOUT2"),
302 SND_SOC_DAPM_OUTPUT("ROUT2"),
303 SND_SOC_DAPM_OUTPUT("MONO"),
304
305 SND_SOC_DAPM_INPUT("LINPUT1"),
306 SND_SOC_DAPM_INPUT("RINPUT1"),
307 SND_SOC_DAPM_INPUT("MIC"),
308};
309
310static const struct snd_soc_dapm_route audio_map[] = {
311 /* left mixer */
312 {"Left Mixer", "Playback Switch", "Left DAC"},
313 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
314 {"Left Mixer", "Right Playback Switch", "Right DAC"},
315 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
316
317 /* right mixer */
318 {"Right Mixer", "Left Playback Switch", "Left DAC"},
319 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
320 {"Right Mixer", "Playback Switch", "Right DAC"},
321 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
322
323 /* left out 1 */
324 {"Left Out 1", NULL, "Left Mixer"},
325 {"LOUT1", NULL, "Left Out 1"},
326
327 /* left out 2 */
328 {"Left Out 2", NULL, "Left Mixer"},
329 {"LOUT2", NULL, "Left Out 2"},
330
331 /* right out 1 */
332 {"Right Out 1", NULL, "Right Mixer"},
333 {"ROUT1", NULL, "Right Out 1"},
334
335 /* right out 2 */
336 {"Right Out 2", NULL, "Right Mixer"},
337 {"ROUT2", NULL, "Right Out 2"},
338
339 /* mono mixer */
340 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
341 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
342 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
343 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
344
345 /* mono out */
346 {"Mono Out", NULL, "Mono Mixer"},
347 {"MONO1", NULL, "Mono Out"},
348
349 /* Left Line Mux */
350 {"Left Line Mux", "Line", "LINPUT1"},
351 {"Left Line Mux", "PGA", "Left PGA Mux"},
352 {"Left Line Mux", "Differential", "Differential Mux"},
353
354 /* Right Line Mux */
355 {"Right Line Mux", "Line", "RINPUT1"},
356 {"Right Line Mux", "Mic", "MIC"},
357 {"Right Line Mux", "PGA", "Right PGA Mux"},
358 {"Right Line Mux", "Differential", "Differential Mux"},
359
360 /* Left PGA Mux */
361 {"Left PGA Mux", "Line", "LINPUT1"},
362 {"Left PGA Mux", "Differential", "Differential Mux"},
363
364 /* Right PGA Mux */
365 {"Right PGA Mux", "Line", "RINPUT1"},
366 {"Right PGA Mux", "Differential", "Differential Mux"},
367
368 /* Differential Mux */
369 {"Differential Mux", "Line", "LINPUT1"},
370 {"Differential Mux", "Line", "RINPUT1"},
371
372 /* Left ADC Mux */
373 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
374 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
375 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
376
377 /* Right ADC Mux */
378 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
379 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
380 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
381
382 /* ADC */
383 {"Left ADC", NULL, "Left ADC Mux"},
384 {"Right ADC", NULL, "Right ADC Mux"},
385};
386
387static int wm8971_add_widgets(struct snd_soc_codec *codec)
388{
389 snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
390 ARRAY_SIZE(wm8971_dapm_widgets));
391
392 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
393
394 snd_soc_dapm_new_widgets(codec);
395
396 return 0;
397}
398
399struct _coeff_div {
400 u32 mclk;
401 u32 rate;
402 u16 fs;
403 u8 sr:5;
404 u8 usb:1;
405};
406
407/* codec hifi mclk clock divider coefficients */
408static const struct _coeff_div coeff_div[] = {
409 /* 8k */
410 {12288000, 8000, 1536, 0x6, 0x0},
411 {11289600, 8000, 1408, 0x16, 0x0},
412 {18432000, 8000, 2304, 0x7, 0x0},
413 {16934400, 8000, 2112, 0x17, 0x0},
414 {12000000, 8000, 1500, 0x6, 0x1},
415
416 /* 11.025k */
417 {11289600, 11025, 1024, 0x18, 0x0},
418 {16934400, 11025, 1536, 0x19, 0x0},
419 {12000000, 11025, 1088, 0x19, 0x1},
420
421 /* 16k */
422 {12288000, 16000, 768, 0xa, 0x0},
423 {18432000, 16000, 1152, 0xb, 0x0},
424 {12000000, 16000, 750, 0xa, 0x1},
425
426 /* 22.05k */
427 {11289600, 22050, 512, 0x1a, 0x0},
428 {16934400, 22050, 768, 0x1b, 0x0},
429 {12000000, 22050, 544, 0x1b, 0x1},
430
431 /* 32k */
432 {12288000, 32000, 384, 0xc, 0x0},
433 {18432000, 32000, 576, 0xd, 0x0},
434 {12000000, 32000, 375, 0xa, 0x1},
435
436 /* 44.1k */
437 {11289600, 44100, 256, 0x10, 0x0},
438 {16934400, 44100, 384, 0x11, 0x0},
439 {12000000, 44100, 272, 0x11, 0x1},
440
441 /* 48k */
442 {12288000, 48000, 256, 0x0, 0x0},
443 {18432000, 48000, 384, 0x1, 0x0},
444 {12000000, 48000, 250, 0x0, 0x1},
445
446 /* 88.2k */
447 {11289600, 88200, 128, 0x1e, 0x0},
448 {16934400, 88200, 192, 0x1f, 0x0},
449 {12000000, 88200, 136, 0x1f, 0x1},
450
451 /* 96k */
452 {12288000, 96000, 128, 0xe, 0x0},
453 {18432000, 96000, 192, 0xf, 0x0},
454 {12000000, 96000, 125, 0xe, 0x1},
455};
456
457static int get_coeff(int mclk, int rate)
458{
459 int i;
460
461 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
462 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
463 return i;
464 }
465 return -EINVAL;
466}
467
468static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
469 int clk_id, unsigned int freq, int dir)
470{
471 struct snd_soc_codec *codec = codec_dai->codec;
472 struct wm8971_priv *wm8971 = codec->private_data;
473
474 switch (freq) {
475 case 11289600:
476 case 12000000:
477 case 12288000:
478 case 16934400:
479 case 18432000:
480 wm8971->sysclk = freq;
481 return 0;
482 }
483 return -EINVAL;
484}
485
486static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
487 unsigned int fmt)
488{
489 struct snd_soc_codec *codec = codec_dai->codec;
490 u16 iface = 0;
491
492 /* set master/slave audio interface */
493 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
494 case SND_SOC_DAIFMT_CBM_CFM:
495 iface = 0x0040;
496 break;
497 case SND_SOC_DAIFMT_CBS_CFS:
498 break;
499 default:
500 return -EINVAL;
501 }
502
503 /* interface format */
504 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
505 case SND_SOC_DAIFMT_I2S:
506 iface |= 0x0002;
507 break;
508 case SND_SOC_DAIFMT_RIGHT_J:
509 break;
510 case SND_SOC_DAIFMT_LEFT_J:
511 iface |= 0x0001;
512 break;
513 case SND_SOC_DAIFMT_DSP_A:
514 iface |= 0x0003;
515 break;
516 case SND_SOC_DAIFMT_DSP_B:
517 iface |= 0x0013;
518 break;
519 default:
520 return -EINVAL;
521 }
522
523 /* clock inversion */
524 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
525 case SND_SOC_DAIFMT_NB_NF:
526 break;
527 case SND_SOC_DAIFMT_IB_IF:
528 iface |= 0x0090;
529 break;
530 case SND_SOC_DAIFMT_IB_NF:
531 iface |= 0x0080;
532 break;
533 case SND_SOC_DAIFMT_NB_IF:
534 iface |= 0x0010;
535 break;
536 default:
537 return -EINVAL;
538 }
539
540 wm8971_write(codec, WM8971_IFACE, iface);
541 return 0;
542}
543
544static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
545 struct snd_pcm_hw_params *params)
546{
547 struct snd_soc_pcm_runtime *rtd = substream->private_data;
548 struct snd_soc_device *socdev = rtd->socdev;
549 struct snd_soc_codec *codec = socdev->codec;
550 struct wm8971_priv *wm8971 = codec->private_data;
551 u16 iface = wm8971_read_reg_cache(codec, WM8971_IFACE) & 0x1f3;
552 u16 srate = wm8971_read_reg_cache(codec, WM8971_SRATE) & 0x1c0;
553 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
554
555 /* bit size */
556 switch (params_format(params)) {
557 case SNDRV_PCM_FORMAT_S16_LE:
558 break;
559 case SNDRV_PCM_FORMAT_S20_3LE:
560 iface |= 0x0004;
561 break;
562 case SNDRV_PCM_FORMAT_S24_LE:
563 iface |= 0x0008;
564 break;
565 case SNDRV_PCM_FORMAT_S32_LE:
566 iface |= 0x000c;
567 break;
568 }
569
570 /* set iface & srate */
571 wm8971_write(codec, WM8971_IFACE, iface);
572 if (coeff >= 0)
573 wm8971_write(codec, WM8971_SRATE, srate |
574 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
575
576 return 0;
577}
578
579static int wm8971_mute(struct snd_soc_dai *dai, int mute)
580{
581 struct snd_soc_codec *codec = dai->codec;
582 u16 mute_reg = wm8971_read_reg_cache(codec, WM8971_ADCDAC) & 0xfff7;
583
584 if (mute)
585 wm8971_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
586 else
587 wm8971_write(codec, WM8971_ADCDAC, mute_reg);
588 return 0;
589}
590
591static int wm8971_set_bias_level(struct snd_soc_codec *codec,
592 enum snd_soc_bias_level level)
593{
594 u16 pwr_reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
595
596 switch (level) {
597 case SND_SOC_BIAS_ON:
598 /* set vmid to 50k and unmute dac */
599 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
600 break;
601 case SND_SOC_BIAS_PREPARE:
602 break;
603 case SND_SOC_BIAS_STANDBY:
604 /* mute dac and set vmid to 500k, enable VREF */
605 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
606 break;
607 case SND_SOC_BIAS_OFF:
608 wm8971_write(codec, WM8971_PWR1, 0x0001);
609 break;
610 }
611 codec->bias_level = level;
612 return 0;
613}
614
615#define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
616 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
617 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
618
619#define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
620 SNDRV_PCM_FMTBIT_S24_LE)
621
622struct snd_soc_dai wm8971_dai = {
623 .name = "WM8971",
624 .playback = {
625 .stream_name = "Playback",
626 .channels_min = 1,
627 .channels_max = 2,
628 .rates = WM8971_RATES,
629 .formats = WM8971_FORMATS,},
630 .capture = {
631 .stream_name = "Capture",
632 .channels_min = 1,
633 .channels_max = 2,
634 .rates = WM8971_RATES,
635 .formats = WM8971_FORMATS,},
636 .ops = {
637 .hw_params = wm8971_pcm_hw_params,
638 },
639 .dai_ops = {
640 .digital_mute = wm8971_mute,
641 .set_fmt = wm8971_set_dai_fmt,
642 .set_sysclk = wm8971_set_dai_sysclk,
643 },
644};
645EXPORT_SYMBOL_GPL(wm8971_dai);
646
647static void wm8971_work(struct work_struct *work)
648{
649 struct snd_soc_codec *codec =
650 container_of(work, struct snd_soc_codec, delayed_work.work);
651 wm8971_set_bias_level(codec, codec->bias_level);
652}
653
654static int wm8971_suspend(struct platform_device *pdev, pm_message_t state)
655{
656 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
657 struct snd_soc_codec *codec = socdev->codec;
658
659 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
660 return 0;
661}
662
663static int wm8971_resume(struct platform_device *pdev)
664{
665 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
666 struct snd_soc_codec *codec = socdev->codec;
667 int i;
668 u8 data[2];
669 u16 *cache = codec->reg_cache;
670 u16 reg;
671
672 /* Sync reg_cache with the hardware */
673 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
674 if (i + 1 == WM8971_RESET)
675 continue;
676 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
677 data[1] = cache[i] & 0x00ff;
678 codec->hw_write(codec->control_data, data, 2);
679 }
680
681 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
682
683 /* charge wm8971 caps */
684 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
685 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
686 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
687 codec->bias_level = SND_SOC_BIAS_ON;
688 queue_delayed_work(wm8971_workq, &codec->delayed_work,
689 msecs_to_jiffies(1000));
690 }
691
692 return 0;
693}
694
695static int wm8971_init(struct snd_soc_device *socdev)
696{
697 struct snd_soc_codec *codec = socdev->codec;
698 int reg, ret = 0;
699
700 codec->name = "WM8971";
701 codec->owner = THIS_MODULE;
702 codec->read = wm8971_read_reg_cache;
703 codec->write = wm8971_write;
704 codec->set_bias_level = wm8971_set_bias_level;
705 codec->dai = &wm8971_dai;
706 codec->reg_cache_size = ARRAY_SIZE(wm8971_reg);
707 codec->num_dai = 1;
708 codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL);
709
710 if (codec->reg_cache == NULL)
711 return -ENOMEM;
712
713 wm8971_reset(codec);
714
715 /* register pcms */
716 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
717 if (ret < 0) {
718 printk(KERN_ERR "wm8971: failed to create pcms\n");
719 goto pcm_err;
720 }
721
722 /* charge output caps - set vmid to 5k for quick power up */
723 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
724 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
725 codec->bias_level = SND_SOC_BIAS_STANDBY;
726 queue_delayed_work(wm8971_workq, &codec->delayed_work,
727 msecs_to_jiffies(1000));
728
729 /* set the update bits */
730 reg = wm8971_read_reg_cache(codec, WM8971_LDAC);
731 wm8971_write(codec, WM8971_LDAC, reg | 0x0100);
732 reg = wm8971_read_reg_cache(codec, WM8971_RDAC);
733 wm8971_write(codec, WM8971_RDAC, reg | 0x0100);
734
735 reg = wm8971_read_reg_cache(codec, WM8971_LOUT1V);
736 wm8971_write(codec, WM8971_LOUT1V, reg | 0x0100);
737 reg = wm8971_read_reg_cache(codec, WM8971_ROUT1V);
738 wm8971_write(codec, WM8971_ROUT1V, reg | 0x0100);
739
740 reg = wm8971_read_reg_cache(codec, WM8971_LOUT2V);
741 wm8971_write(codec, WM8971_LOUT2V, reg | 0x0100);
742 reg = wm8971_read_reg_cache(codec, WM8971_ROUT2V);
743 wm8971_write(codec, WM8971_ROUT2V, reg | 0x0100);
744
745 reg = wm8971_read_reg_cache(codec, WM8971_LINVOL);
746 wm8971_write(codec, WM8971_LINVOL, reg | 0x0100);
747 reg = wm8971_read_reg_cache(codec, WM8971_RINVOL);
748 wm8971_write(codec, WM8971_RINVOL, reg | 0x0100);
749
750 wm8971_add_controls(codec);
751 wm8971_add_widgets(codec);
752 ret = snd_soc_register_card(socdev);
753 if (ret < 0) {
754 printk(KERN_ERR "wm8971: failed to register card\n");
755 goto card_err;
756 }
757 return ret;
758
759card_err:
760 snd_soc_free_pcms(socdev);
761 snd_soc_dapm_free(socdev);
762pcm_err:
763 kfree(codec->reg_cache);
764 return ret;
765}
766
767/* If the i2c layer weren't so broken, we could pass this kind of data
768 around */
769static struct snd_soc_device *wm8971_socdev;
770
771#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
772
773static int wm8971_i2c_probe(struct i2c_client *i2c,
774 const struct i2c_device_id *id)
775{
776 struct snd_soc_device *socdev = wm8971_socdev;
777 struct snd_soc_codec *codec = socdev->codec;
778 int ret;
779
780 i2c_set_clientdata(i2c, codec);
781
782 codec->control_data = i2c;
783
784 ret = wm8971_init(socdev);
785 if (ret < 0)
786 pr_err("failed to initialise WM8971\n");
787
788 return ret;
789}
790
791static int wm8971_i2c_remove(struct i2c_client *client)
792{
793 struct snd_soc_codec *codec = i2c_get_clientdata(client);
794 kfree(codec->reg_cache);
795 return 0;
796}
797
798static const struct i2c_device_id wm8971_i2c_id[] = {
799 { "wm8971", 0 },
800 { }
801};
802MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
803
804static struct i2c_driver wm8971_i2c_driver = {
805 .driver = {
806 .name = "WM8971 I2C Codec",
807 .owner = THIS_MODULE,
808 },
809 .probe = wm8971_i2c_probe,
810 .remove = wm8971_i2c_remove,
811 .id_table = wm8971_i2c_id,
812};
813
814static int wm8971_add_i2c_device(struct platform_device *pdev,
815 const struct wm8971_setup_data *setup)
816{
817 struct i2c_board_info info;
818 struct i2c_adapter *adapter;
819 struct i2c_client *client;
820 int ret;
821
822 ret = i2c_add_driver(&wm8971_i2c_driver);
823 if (ret != 0) {
824 dev_err(&pdev->dev, "can't add i2c driver\n");
825 return ret;
826 }
827
828 memset(&info, 0, sizeof(struct i2c_board_info));
829 info.addr = setup->i2c_address;
830 strlcpy(info.type, "wm8971", I2C_NAME_SIZE);
831
832 adapter = i2c_get_adapter(setup->i2c_bus);
833 if (!adapter) {
834 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
835 setup->i2c_bus);
836 goto err_driver;
837 }
838
839 client = i2c_new_device(adapter, &info);
840 i2c_put_adapter(adapter);
841 if (!client) {
842 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
843 (unsigned int)info.addr);
844 goto err_driver;
845 }
846
847 return 0;
848
849err_driver:
850 i2c_del_driver(&wm8971_i2c_driver);
851 return -ENODEV;
852}
853
854#endif
855
856static int wm8971_probe(struct platform_device *pdev)
857{
858 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
859 struct wm8971_setup_data *setup;
860 struct snd_soc_codec *codec;
861 struct wm8971_priv *wm8971;
862 int ret = 0;
863
864 pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
865
866 setup = socdev->codec_data;
867 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
868 if (codec == NULL)
869 return -ENOMEM;
870
871 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
872 if (wm8971 == NULL) {
873 kfree(codec);
874 return -ENOMEM;
875 }
876
877 codec->private_data = wm8971;
878 socdev->codec = codec;
879 mutex_init(&codec->mutex);
880 INIT_LIST_HEAD(&codec->dapm_widgets);
881 INIT_LIST_HEAD(&codec->dapm_paths);
882 wm8971_socdev = socdev;
883
884 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
885 wm8971_workq = create_workqueue("wm8971");
886 if (wm8971_workq == NULL) {
887 kfree(codec->private_data);
888 kfree(codec);
889 return -ENOMEM;
890 }
891
892#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
893 if (setup->i2c_address) {
894 codec->hw_write = (hw_write_t)i2c_master_send;
895 ret = wm8971_add_i2c_device(pdev, setup);
896 }
897#endif
898 /* Add other interfaces here */
899
900 if (ret != 0) {
901 destroy_workqueue(wm8971_workq);
902 kfree(codec->private_data);
903 kfree(codec);
904 }
905
906 return ret;
907}
908
909/* power down chip */
910static int wm8971_remove(struct platform_device *pdev)
911{
912 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
913 struct snd_soc_codec *codec = socdev->codec;
914
915 if (codec->control_data)
916 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
917 if (wm8971_workq)
918 destroy_workqueue(wm8971_workq);
919 snd_soc_free_pcms(socdev);
920 snd_soc_dapm_free(socdev);
921#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
922 i2c_unregister_device(codec->control_data);
923 i2c_del_driver(&wm8971_i2c_driver);
924#endif
925 kfree(codec->private_data);
926 kfree(codec);
927
928 return 0;
929}
930
931struct snd_soc_codec_device soc_codec_dev_wm8971 = {
932 .probe = wm8971_probe,
933 .remove = wm8971_remove,
934 .suspend = wm8971_suspend,
935 .resume = wm8971_resume,
936};
937
938EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971);
939
940MODULE_DESCRIPTION("ASoC WM8971 driver");
941MODULE_AUTHOR("Lab126");
942MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.07604 seconds and 5 git commands to generate.