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Diffstat (limited to 'sound/soc/codecs/wm8971.c')
-rw-r--r--sound/soc/codecs/wm8971.c941
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diff --git a/sound/soc/codecs/wm8971.c b/sound/soc/codecs/wm8971.c
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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 WM8971_VERSION "0.9"
33
34#define WM8971_REG_COUNT 43
35
36static struct workqueue_struct *wm8971_workq = NULL;
37
38/* codec private data */
39struct wm8971_priv {
40 unsigned int sysclk;
41};
42
43/*
44 * wm8971 register cache
45 * We can't read the WM8971 register space when we
46 * are using 2 wire for device control, so we cache them instead.
47 */
48static const u16 wm8971_reg[] = {
49 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
50 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
51 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
52 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
53 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
54 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
55 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
56 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
57 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
58 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
59 0x0079, 0x0079, 0x0079, /* 40 */
60};
61
62static inline unsigned int wm8971_read_reg_cache(struct snd_soc_codec *codec,
63 unsigned int reg)
64{
65 u16 *cache = codec->reg_cache;
66 if (reg < WM8971_REG_COUNT)
67 return cache[reg];
68
69 return -1;
70}
71
72static inline void wm8971_write_reg_cache(struct snd_soc_codec *codec,
73 unsigned int reg, unsigned int value)
74{
75 u16 *cache = codec->reg_cache;
76 if (reg < WM8971_REG_COUNT)
77 cache[reg] = value;
78}
79
80static int wm8971_write(struct snd_soc_codec *codec, unsigned int reg,
81 unsigned int value)
82{
83 u8 data[2];
84
85 /* data is
86 * D15..D9 WM8753 register offset
87 * D8...D0 register data
88 */
89 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
90 data[1] = value & 0x00ff;
91
92 wm8971_write_reg_cache (codec, reg, value);
93 if (codec->hw_write(codec->control_data, data, 2) == 2)
94 return 0;
95 else
96 return -EIO;
97}
98
99#define wm8971_reset(c) wm8971_write(c, WM8971_RESET, 0)
100
101/* WM8971 Controls */
102static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
103static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
104 "200Hz @ 48kHz" };
105static const char *wm8971_treble[] = { "8kHz", "4kHz" };
106static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
107static const char *wm8971_ng_type[] = { "Constant PGA Gain",
108 "Mute ADC Output" };
109static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
110static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
111 "Mono (Right)", "Digital Mono"};
112static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
113static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
114 "Differential"};
115static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
116 "Differential"};
117static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
118static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
119static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
120 "L + R Invert"};
121
122static const struct soc_enum wm8971_enum[] = {
123 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */
124 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
125 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
126 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
127 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */
128 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
129 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
130 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
131 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
132 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
133 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
134 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
135 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */
136 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
137};
138
139static const struct snd_kcontrol_new wm8971_snd_controls[] = {
140 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
141 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
142 6, 1, 0),
143 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
144
145 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
146 WM8971_ROUT1V, 7, 1, 0),
147 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
148 WM8971_ROUT2V, 7, 1, 0),
149 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
150
151 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
152
153 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
154 WM8971_LOUTM2, 4, 7, 1),
155 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
156 WM8971_ROUTM2, 4, 7, 1),
157 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
158 WM8971_MOUTM2, 4, 7, 1),
159
160 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
161 WM8971_ROUT1V, 0, 127, 0),
162 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
163 WM8971_ROUT2V, 0, 127, 0),
164
165 SOC_ENUM("Bass Boost", wm8971_enum[0]),
166 SOC_ENUM("Bass Filter", wm8971_enum[1]),
167 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
168
169 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
170 SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
171
172 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
173
174 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
175 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
176
177 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
178 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
179 SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
180 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
181 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
182 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
183 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
184 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
185 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
186 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
187
188 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
189 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
190
191 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
192 SOC_ENUM("Playback Function", wm8971_enum[6]),
193 SOC_ENUM("Playback Phase", wm8971_enum[7]),
194
195 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
196};
197
198/* add non-DAPM controls */
199static int wm8971_add_controls(struct snd_soc_codec *codec)
200{
201 int err, i;
202
203 for (i = 0; i < ARRAY_SIZE(wm8971_snd_controls); i++) {
204 err = snd_ctl_add(codec->card,
205 snd_soc_cnew(&wm8971_snd_controls[i],
206 codec, NULL));
207 if (err < 0)
208 return err;
209 }
210 return 0;
211}
212
213/*
214 * DAPM Controls
215 */
216
217/* Left Mixer */
218static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
219SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
220SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
221SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
222SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
223};
224
225/* Right Mixer */
226static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
227SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
228SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
229SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
230SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
231};
232
233/* Mono Mixer */
234static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
235SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
236SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
237SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
238SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
239};
240
241/* Left Line Mux */
242static const struct snd_kcontrol_new wm8971_left_line_controls =
243SOC_DAPM_ENUM("Route", wm8971_enum[8]);
244
245/* Right Line Mux */
246static const struct snd_kcontrol_new wm8971_right_line_controls =
247SOC_DAPM_ENUM("Route", wm8971_enum[9]);
248
249/* Left PGA Mux */
250static const struct snd_kcontrol_new wm8971_left_pga_controls =
251SOC_DAPM_ENUM("Route", wm8971_enum[10]);
252
253/* Right PGA Mux */
254static const struct snd_kcontrol_new wm8971_right_pga_controls =
255SOC_DAPM_ENUM("Route", wm8971_enum[11]);
256
257/* Mono ADC Mux */
258static const struct snd_kcontrol_new wm8971_monomux_controls =
259SOC_DAPM_ENUM("Route", wm8971_enum[13]);
260
261static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
262 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
263 &wm8971_left_mixer_controls[0],
264 ARRAY_SIZE(wm8971_left_mixer_controls)),
265 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
266 &wm8971_right_mixer_controls[0],
267 ARRAY_SIZE(wm8971_right_mixer_controls)),
268 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
269 &wm8971_mono_mixer_controls[0],
270 ARRAY_SIZE(wm8971_mono_mixer_controls)),
271
272 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
273 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
274 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
275 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
276 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
277 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
278 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
279
280 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
281 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
282 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
283
284 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
285 &wm8971_left_pga_controls),
286 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
287 &wm8971_right_pga_controls),
288 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
289 &wm8971_left_line_controls),
290 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
291 &wm8971_right_line_controls),
292
293 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
294 &wm8971_monomux_controls),
295 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
296 &wm8971_monomux_controls),
297
298 SND_SOC_DAPM_OUTPUT("LOUT1"),
299 SND_SOC_DAPM_OUTPUT("ROUT1"),
300 SND_SOC_DAPM_OUTPUT("LOUT2"),
301 SND_SOC_DAPM_OUTPUT("ROUT2"),
302 SND_SOC_DAPM_OUTPUT("MONO"),
303
304 SND_SOC_DAPM_INPUT("LINPUT1"),
305 SND_SOC_DAPM_INPUT("RINPUT1"),
306 SND_SOC_DAPM_INPUT("MIC"),
307};
308
309static const struct snd_soc_dapm_route audio_map[] = {
310 /* left mixer */
311 {"Left Mixer", "Playback Switch", "Left DAC"},
312 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
313 {"Left Mixer", "Right Playback Switch", "Right DAC"},
314 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
315
316 /* right mixer */
317 {"Right Mixer", "Left Playback Switch", "Left DAC"},
318 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
319 {"Right Mixer", "Playback Switch", "Right DAC"},
320 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
321
322 /* left out 1 */
323 {"Left Out 1", NULL, "Left Mixer"},
324 {"LOUT1", NULL, "Left Out 1"},
325
326 /* left out 2 */
327 {"Left Out 2", NULL, "Left Mixer"},
328 {"LOUT2", NULL, "Left Out 2"},
329
330 /* right out 1 */
331 {"Right Out 1", NULL, "Right Mixer"},
332 {"ROUT1", NULL, "Right Out 1"},
333
334 /* right out 2 */
335 {"Right Out 2", NULL, "Right Mixer"},
336 {"ROUT2", NULL, "Right Out 2"},
337
338 /* mono mixer */
339 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
340 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
341 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
342 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
343
344 /* mono out */
345 {"Mono Out", NULL, "Mono Mixer"},
346 {"MONO1", NULL, "Mono Out"},
347
348 /* Left Line Mux */
349 {"Left Line Mux", "Line", "LINPUT1"},
350 {"Left Line Mux", "PGA", "Left PGA Mux"},
351 {"Left Line Mux", "Differential", "Differential Mux"},
352
353 /* Right Line Mux */
354 {"Right Line Mux", "Line", "RINPUT1"},
355 {"Right Line Mux", "Mic", "MIC"},
356 {"Right Line Mux", "PGA", "Right PGA Mux"},
357 {"Right Line Mux", "Differential", "Differential Mux"},
358
359 /* Left PGA Mux */
360 {"Left PGA Mux", "Line", "LINPUT1"},
361 {"Left PGA Mux", "Differential", "Differential Mux"},
362
363 /* Right PGA Mux */
364 {"Right PGA Mux", "Line", "RINPUT1"},
365 {"Right PGA Mux", "Differential", "Differential Mux"},
366
367 /* Differential Mux */
368 {"Differential Mux", "Line", "LINPUT1"},
369 {"Differential Mux", "Line", "RINPUT1"},
370
371 /* Left ADC Mux */
372 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
373 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
374 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
375
376 /* Right ADC Mux */
377 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
378 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
379 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
380
381 /* ADC */
382 {"Left ADC", NULL, "Left ADC Mux"},
383 {"Right ADC", NULL, "Right ADC Mux"},
384};
385
386static int wm8971_add_widgets(struct snd_soc_codec *codec)
387{
388 snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
389 ARRAY_SIZE(wm8971_dapm_widgets));
390
391 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
392
393 snd_soc_dapm_new_widgets(codec);
394
395 return 0;
396}
397
398struct _coeff_div {
399 u32 mclk;
400 u32 rate;
401 u16 fs;
402 u8 sr:5;
403 u8 usb:1;
404};
405
406/* codec hifi mclk clock divider coefficients */
407static const struct _coeff_div coeff_div[] = {
408 /* 8k */
409 {12288000, 8000, 1536, 0x6, 0x0},
410 {11289600, 8000, 1408, 0x16, 0x0},
411 {18432000, 8000, 2304, 0x7, 0x0},
412 {16934400, 8000, 2112, 0x17, 0x0},
413 {12000000, 8000, 1500, 0x6, 0x1},
414
415 /* 11.025k */
416 {11289600, 11025, 1024, 0x18, 0x0},
417 {16934400, 11025, 1536, 0x19, 0x0},
418 {12000000, 11025, 1088, 0x19, 0x1},
419
420 /* 16k */
421 {12288000, 16000, 768, 0xa, 0x0},
422 {18432000, 16000, 1152, 0xb, 0x0},
423 {12000000, 16000, 750, 0xa, 0x1},
424
425 /* 22.05k */
426 {11289600, 22050, 512, 0x1a, 0x0},
427 {16934400, 22050, 768, 0x1b, 0x0},
428 {12000000, 22050, 544, 0x1b, 0x1},
429
430 /* 32k */
431 {12288000, 32000, 384, 0xc, 0x0},
432 {18432000, 32000, 576, 0xd, 0x0},
433 {12000000, 32000, 375, 0xa, 0x1},
434
435 /* 44.1k */
436 {11289600, 44100, 256, 0x10, 0x0},
437 {16934400, 44100, 384, 0x11, 0x0},
438 {12000000, 44100, 272, 0x11, 0x1},
439
440 /* 48k */
441 {12288000, 48000, 256, 0x0, 0x0},
442 {18432000, 48000, 384, 0x1, 0x0},
443 {12000000, 48000, 250, 0x0, 0x1},
444
445 /* 88.2k */
446 {11289600, 88200, 128, 0x1e, 0x0},
447 {16934400, 88200, 192, 0x1f, 0x0},
448 {12000000, 88200, 136, 0x1f, 0x1},
449
450 /* 96k */
451 {12288000, 96000, 128, 0xe, 0x0},
452 {18432000, 96000, 192, 0xf, 0x0},
453 {12000000, 96000, 125, 0xe, 0x1},
454};
455
456static int get_coeff(int mclk, int rate)
457{
458 int i;
459
460 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
461 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
462 return i;
463 }
464 return -EINVAL;
465}
466
467static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
468 int clk_id, unsigned int freq, int dir)
469{
470 struct snd_soc_codec *codec = codec_dai->codec;
471 struct wm8971_priv *wm8971 = codec->private_data;
472
473 switch (freq) {
474 case 11289600:
475 case 12000000:
476 case 12288000:
477 case 16934400:
478 case 18432000:
479 wm8971->sysclk = freq;
480 return 0;
481 }
482 return -EINVAL;
483}
484
485static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
486 unsigned int fmt)
487{
488 struct snd_soc_codec *codec = codec_dai->codec;
489 u16 iface = 0;
490
491 /* set master/slave audio interface */
492 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
493 case SND_SOC_DAIFMT_CBM_CFM:
494 iface = 0x0040;
495 break;
496 case SND_SOC_DAIFMT_CBS_CFS:
497 break;
498 default:
499 return -EINVAL;
500 }
501
502 /* interface format */
503 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
504 case SND_SOC_DAIFMT_I2S:
505 iface |= 0x0002;
506 break;
507 case SND_SOC_DAIFMT_RIGHT_J:
508 break;
509 case SND_SOC_DAIFMT_LEFT_J:
510 iface |= 0x0001;
511 break;
512 case SND_SOC_DAIFMT_DSP_A:
513 iface |= 0x0003;
514 break;
515 case SND_SOC_DAIFMT_DSP_B:
516 iface |= 0x0013;
517 break;
518 default:
519 return -EINVAL;
520 }
521
522 /* clock inversion */
523 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
524 case SND_SOC_DAIFMT_NB_NF:
525 break;
526 case SND_SOC_DAIFMT_IB_IF:
527 iface |= 0x0090;
528 break;
529 case SND_SOC_DAIFMT_IB_NF:
530 iface |= 0x0080;
531 break;
532 case SND_SOC_DAIFMT_NB_IF:
533 iface |= 0x0010;
534 break;
535 default:
536 return -EINVAL;
537 }
538
539 wm8971_write(codec, WM8971_IFACE, iface);
540 return 0;
541}
542
543static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
544 struct snd_pcm_hw_params *params)
545{
546 struct snd_soc_pcm_runtime *rtd = substream->private_data;
547 struct snd_soc_device *socdev = rtd->socdev;
548 struct snd_soc_codec *codec = socdev->codec;
549 struct wm8971_priv *wm8971 = codec->private_data;
550 u16 iface = wm8971_read_reg_cache(codec, WM8971_IFACE) & 0x1f3;
551 u16 srate = wm8971_read_reg_cache(codec, WM8971_SRATE) & 0x1c0;
552 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
553
554 /* bit size */
555 switch (params_format(params)) {
556 case SNDRV_PCM_FORMAT_S16_LE:
557 break;
558 case SNDRV_PCM_FORMAT_S20_3LE:
559 iface |= 0x0004;
560 break;
561 case SNDRV_PCM_FORMAT_S24_LE:
562 iface |= 0x0008;
563 break;
564 case SNDRV_PCM_FORMAT_S32_LE:
565 iface |= 0x000c;
566 break;
567 }
568
569 /* set iface & srate */
570 wm8971_write(codec, WM8971_IFACE, iface);
571 if (coeff >= 0)
572 wm8971_write(codec, WM8971_SRATE, srate |
573 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
574
575 return 0;
576}
577
578static int wm8971_mute(struct snd_soc_dai *dai, int mute)
579{
580 struct snd_soc_codec *codec = dai->codec;
581 u16 mute_reg = wm8971_read_reg_cache(codec, WM8971_ADCDAC) & 0xfff7;
582
583 if (mute)
584 wm8971_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
585 else
586 wm8971_write(codec, WM8971_ADCDAC, mute_reg);
587 return 0;
588}
589
590static int wm8971_set_bias_level(struct snd_soc_codec *codec,
591 enum snd_soc_bias_level level)
592{
593 u16 pwr_reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
594
595 switch (level) {
596 case SND_SOC_BIAS_ON:
597 /* set vmid to 50k and unmute dac */
598 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
599 break;
600 case SND_SOC_BIAS_PREPARE:
601 break;
602 case SND_SOC_BIAS_STANDBY:
603 /* mute dac and set vmid to 500k, enable VREF */
604 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
605 break;
606 case SND_SOC_BIAS_OFF:
607 wm8971_write(codec, WM8971_PWR1, 0x0001);
608 break;
609 }
610 codec->bias_level = level;
611 return 0;
612}
613
614#define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
615 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
616 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
617
618#define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
619 SNDRV_PCM_FMTBIT_S24_LE)
620
621struct snd_soc_dai wm8971_dai = {
622 .name = "WM8971",
623 .playback = {
624 .stream_name = "Playback",
625 .channels_min = 1,
626 .channels_max = 2,
627 .rates = WM8971_RATES,
628 .formats = WM8971_FORMATS,},
629 .capture = {
630 .stream_name = "Capture",
631 .channels_min = 1,
632 .channels_max = 2,
633 .rates = WM8971_RATES,
634 .formats = WM8971_FORMATS,},
635 .ops = {
636 .hw_params = wm8971_pcm_hw_params,
637 },
638 .dai_ops = {
639 .digital_mute = wm8971_mute,
640 .set_fmt = wm8971_set_dai_fmt,
641 .set_sysclk = wm8971_set_dai_sysclk,
642 },
643};
644EXPORT_SYMBOL_GPL(wm8971_dai);
645
646static void wm8971_work(struct work_struct *work)
647{
648 struct snd_soc_codec *codec =
649 container_of(work, struct snd_soc_codec, delayed_work.work);
650 wm8971_set_bias_level(codec, codec->bias_level);
651}
652
653static int wm8971_suspend(struct platform_device *pdev, pm_message_t state)
654{
655 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
656 struct snd_soc_codec *codec = socdev->codec;
657
658 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
659 return 0;
660}
661
662static int wm8971_resume(struct platform_device *pdev)
663{
664 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
665 struct snd_soc_codec *codec = socdev->codec;
666 int i;
667 u8 data[2];
668 u16 *cache = codec->reg_cache;
669 u16 reg;
670
671 /* Sync reg_cache with the hardware */
672 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
673 if (i + 1 == WM8971_RESET)
674 continue;
675 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
676 data[1] = cache[i] & 0x00ff;
677 codec->hw_write(codec->control_data, data, 2);
678 }
679
680 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
681
682 /* charge wm8971 caps */
683 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
684 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
685 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
686 codec->bias_level = SND_SOC_BIAS_ON;
687 queue_delayed_work(wm8971_workq, &codec->delayed_work,
688 msecs_to_jiffies(1000));
689 }
690
691 return 0;
692}
693
694static int wm8971_init(struct snd_soc_device *socdev)
695{
696 struct snd_soc_codec *codec = socdev->codec;
697 int reg, ret = 0;
698
699 codec->name = "WM8971";
700 codec->owner = THIS_MODULE;
701 codec->read = wm8971_read_reg_cache;
702 codec->write = wm8971_write;
703 codec->set_bias_level = wm8971_set_bias_level;
704 codec->dai = &wm8971_dai;
705 codec->reg_cache_size = ARRAY_SIZE(wm8971_reg);
706 codec->num_dai = 1;
707 codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL);
708
709 if (codec->reg_cache == NULL)
710 return -ENOMEM;
711
712 wm8971_reset(codec);
713
714 /* register pcms */
715 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
716 if (ret < 0) {
717 printk(KERN_ERR "wm8971: failed to create pcms\n");
718 goto pcm_err;
719 }
720
721 /* charge output caps - set vmid to 5k for quick power up */
722 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
723 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
724 codec->bias_level = SND_SOC_BIAS_STANDBY;
725 queue_delayed_work(wm8971_workq, &codec->delayed_work,
726 msecs_to_jiffies(1000));
727
728 /* set the update bits */
729 reg = wm8971_read_reg_cache(codec, WM8971_LDAC);
730 wm8971_write(codec, WM8971_LDAC, reg | 0x0100);
731 reg = wm8971_read_reg_cache(codec, WM8971_RDAC);
732 wm8971_write(codec, WM8971_RDAC, reg | 0x0100);
733
734 reg = wm8971_read_reg_cache(codec, WM8971_LOUT1V);
735 wm8971_write(codec, WM8971_LOUT1V, reg | 0x0100);
736 reg = wm8971_read_reg_cache(codec, WM8971_ROUT1V);
737 wm8971_write(codec, WM8971_ROUT1V, reg | 0x0100);
738
739 reg = wm8971_read_reg_cache(codec, WM8971_LOUT2V);
740 wm8971_write(codec, WM8971_LOUT2V, reg | 0x0100);
741 reg = wm8971_read_reg_cache(codec, WM8971_ROUT2V);
742 wm8971_write(codec, WM8971_ROUT2V, reg | 0x0100);
743
744 reg = wm8971_read_reg_cache(codec, WM8971_LINVOL);
745 wm8971_write(codec, WM8971_LINVOL, reg | 0x0100);
746 reg = wm8971_read_reg_cache(codec, WM8971_RINVOL);
747 wm8971_write(codec, WM8971_RINVOL, reg | 0x0100);
748
749 wm8971_add_controls(codec);
750 wm8971_add_widgets(codec);
751 ret = snd_soc_register_card(socdev);
752 if (ret < 0) {
753 printk(KERN_ERR "wm8971: failed to register card\n");
754 goto card_err;
755 }
756 return ret;
757
758card_err:
759 snd_soc_free_pcms(socdev);
760 snd_soc_dapm_free(socdev);
761pcm_err:
762 kfree(codec->reg_cache);
763 return ret;
764}
765
766/* If the i2c layer weren't so broken, we could pass this kind of data
767 around */
768static struct snd_soc_device *wm8971_socdev;
769
770#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
771
772static int wm8971_i2c_probe(struct i2c_client *i2c,
773 const struct i2c_device_id *id)
774{
775 struct snd_soc_device *socdev = wm8971_socdev;
776 struct snd_soc_codec *codec = socdev->codec;
777 int ret;
778
779 i2c_set_clientdata(i2c, codec);
780
781 codec->control_data = i2c;
782
783 ret = wm8971_init(socdev);
784 if (ret < 0)
785 pr_err("failed to initialise WM8971\n");
786
787 return ret;
788}
789
790static int wm8971_i2c_remove(struct i2c_client *client)
791{
792 struct snd_soc_codec *codec = i2c_get_clientdata(client);
793 kfree(codec->reg_cache);
794 return 0;
795}
796
797static const struct i2c_device_id wm8971_i2c_id[] = {
798 { "wm8971", 0 },
799 { }
800};
801MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
802
803static struct i2c_driver wm8971_i2c_driver = {
804 .driver = {
805 .name = "WM8971 I2C Codec",
806 .owner = THIS_MODULE,
807 },
808 .probe = wm8971_i2c_probe,
809 .remove = wm8971_i2c_remove,
810 .id_table = wm8971_i2c_id,
811};
812
813static int wm8971_add_i2c_device(struct platform_device *pdev,
814 const struct wm8971_setup_data *setup)
815{
816 struct i2c_board_info info;
817 struct i2c_adapter *adapter;
818 struct i2c_client *client;
819 int ret;
820
821 ret = i2c_add_driver(&wm8971_i2c_driver);
822 if (ret != 0) {
823 dev_err(&pdev->dev, "can't add i2c driver\n");
824 return ret;
825 }
826
827 memset(&info, 0, sizeof(struct i2c_board_info));
828 info.addr = setup->i2c_address;
829 strlcpy(info.type, "wm8971", I2C_NAME_SIZE);
830
831 adapter = i2c_get_adapter(setup->i2c_bus);
832 if (!adapter) {
833 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
834 setup->i2c_bus);
835 goto err_driver;
836 }
837
838 client = i2c_new_device(adapter, &info);
839 i2c_put_adapter(adapter);
840 if (!client) {
841 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
842 (unsigned int)info.addr);
843 goto err_driver;
844 }
845
846 return 0;
847
848err_driver:
849 i2c_del_driver(&wm8971_i2c_driver);
850 return -ENODEV;
851}
852
853#endif
854
855static int wm8971_probe(struct platform_device *pdev)
856{
857 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
858 struct wm8971_setup_data *setup;
859 struct snd_soc_codec *codec;
860 struct wm8971_priv *wm8971;
861 int ret = 0;
862
863 pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
864
865 setup = socdev->codec_data;
866 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
867 if (codec == NULL)
868 return -ENOMEM;
869
870 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
871 if (wm8971 == NULL) {
872 kfree(codec);
873 return -ENOMEM;
874 }
875
876 codec->private_data = wm8971;
877 socdev->codec = codec;
878 mutex_init(&codec->mutex);
879 INIT_LIST_HEAD(&codec->dapm_widgets);
880 INIT_LIST_HEAD(&codec->dapm_paths);
881 wm8971_socdev = socdev;
882
883 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
884 wm8971_workq = create_workqueue("wm8971");
885 if (wm8971_workq == NULL) {
886 kfree(codec->private_data);
887 kfree(codec);
888 return -ENOMEM;
889 }
890
891#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
892 if (setup->i2c_address) {
893 codec->hw_write = (hw_write_t)i2c_master_send;
894 ret = wm8971_add_i2c_device(pdev, setup);
895 }
896#endif
897 /* Add other interfaces here */
898
899 if (ret != 0) {
900 destroy_workqueue(wm8971_workq);
901 kfree(codec->private_data);
902 kfree(codec);
903 }
904
905 return ret;
906}
907
908/* power down chip */
909static int wm8971_remove(struct platform_device *pdev)
910{
911 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
912 struct snd_soc_codec *codec = socdev->codec;
913
914 if (codec->control_data)
915 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
916 if (wm8971_workq)
917 destroy_workqueue(wm8971_workq);
918 snd_soc_free_pcms(socdev);
919 snd_soc_dapm_free(socdev);
920#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
921 i2c_unregister_device(codec->control_data);
922 i2c_del_driver(&wm8971_i2c_driver);
923#endif
924 kfree(codec->private_data);
925 kfree(codec);
926
927 return 0;
928}
929
930struct snd_soc_codec_device soc_codec_dev_wm8971 = {
931 .probe = wm8971_probe,
932 .remove = wm8971_remove,
933 .suspend = wm8971_suspend,
934 .resume = wm8971_resume,
935};
936
937EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971);
938
939MODULE_DESCRIPTION("ASoC WM8971 driver");
940MODULE_AUTHOR("Lab126");
941MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-25 20:21:10 -0500