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ARM: Merge for-2637/s3c24xx/h1940
[deliverable/linux.git] / sound / soc / codecs / wm8971.c
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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_REG_COUNT 43
34
35static struct workqueue_struct *wm8971_workq = NULL;
36
37/* codec private data */
38struct wm8971_priv {
f0fba2ad 39 enum snd_soc_control_type control_type;
8bae3e23
KK		 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
17a52fd6 62#define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
8bae3e23
KK		 63
64/* WM8971 Controls */
65static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
66static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
67 "200Hz @ 48kHz" };
68static const char *wm8971_treble[] = { "8kHz", "4kHz" };
69static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
70static const char *wm8971_ng_type[] = { "Constant PGA Gain",
71 "Mute ADC Output" };
72static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
73static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
74 "Mono (Right)", "Digital Mono"};
75static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
76static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
77 "Differential"};
78static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
79 "Differential"};
80static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
81static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
82static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
83 "L + R Invert"};
84
85static const struct soc_enum wm8971_enum[] = {
86 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */
87 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
88 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
89 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
90 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */
91 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
92 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
93 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
94 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
95 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
96 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
97 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
98 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */
99 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
100};
101
102static const struct snd_kcontrol_new wm8971_snd_controls[] = {
103 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
104 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
105 6, 1, 0),
106 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
107
108 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
109 WM8971_ROUT1V, 7, 1, 0),
110 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
111 WM8971_ROUT2V, 7, 1, 0),
112 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
113
114 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
115
116 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
117 WM8971_LOUTM2, 4, 7, 1),
118 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
119 WM8971_ROUTM2, 4, 7, 1),
120 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
121 WM8971_MOUTM2, 4, 7, 1),
122
123 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
124 WM8971_ROUT1V, 0, 127, 0),
125 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
126 WM8971_ROUT2V, 0, 127, 0),
127
128 SOC_ENUM("Bass Boost", wm8971_enum[0]),
129 SOC_ENUM("Bass Filter", wm8971_enum[1]),
130 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
131
132 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
133 SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
134
135 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
136
137 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
138 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
139
140 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
141 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
142 SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
143 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
144 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
145 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
146 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
147 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
148 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
149 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
150
151 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
152 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
153
154 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
155 SOC_ENUM("Playback Function", wm8971_enum[6]),
156 SOC_ENUM("Playback Phase", wm8971_enum[7]),
157
158 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
159};
160
8bae3e23
KK		 161/*
162 * DAPM Controls
163 */
164
165/* Left Mixer */
166static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
167SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
168SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
169SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
170SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
171};
172
173/* Right Mixer */
174static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
175SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
176SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
177SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
178SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
179};
180
181/* Mono Mixer */
182static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
183SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
184SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
185SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
186SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
187};
188
189/* Left Line Mux */
190static const struct snd_kcontrol_new wm8971_left_line_controls =
191SOC_DAPM_ENUM("Route", wm8971_enum[8]);
192
193/* Right Line Mux */
194static const struct snd_kcontrol_new wm8971_right_line_controls =
195SOC_DAPM_ENUM("Route", wm8971_enum[9]);
196
197/* Left PGA Mux */
198static const struct snd_kcontrol_new wm8971_left_pga_controls =
199SOC_DAPM_ENUM("Route", wm8971_enum[10]);
200
201/* Right PGA Mux */
202static const struct snd_kcontrol_new wm8971_right_pga_controls =
203SOC_DAPM_ENUM("Route", wm8971_enum[11]);
204
205/* Mono ADC Mux */
206static const struct snd_kcontrol_new wm8971_monomux_controls =
207SOC_DAPM_ENUM("Route", wm8971_enum[13]);
208
209static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
210 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
211 &wm8971_left_mixer_controls[0],
212 ARRAY_SIZE(wm8971_left_mixer_controls)),
213 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
214 &wm8971_right_mixer_controls[0],
215 ARRAY_SIZE(wm8971_right_mixer_controls)),
216 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
217 &wm8971_mono_mixer_controls[0],
218 ARRAY_SIZE(wm8971_mono_mixer_controls)),
219
220 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
221 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
222 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
223 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
224 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
225 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
226 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
227
228 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
229 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
230 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
231
232 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
233 &wm8971_left_pga_controls),
234 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
235 &wm8971_right_pga_controls),
236 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
237 &wm8971_left_line_controls),
238 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
239 &wm8971_right_line_controls),
240
241 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
242 &wm8971_monomux_controls),
243 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
244 &wm8971_monomux_controls),
245
246 SND_SOC_DAPM_OUTPUT("LOUT1"),
247 SND_SOC_DAPM_OUTPUT("ROUT1"),
248 SND_SOC_DAPM_OUTPUT("LOUT2"),
249 SND_SOC_DAPM_OUTPUT("ROUT2"),
250 SND_SOC_DAPM_OUTPUT("MONO"),
251
252 SND_SOC_DAPM_INPUT("LINPUT1"),
253 SND_SOC_DAPM_INPUT("RINPUT1"),
254 SND_SOC_DAPM_INPUT("MIC"),
255};
256
257static const struct snd_soc_dapm_route audio_map[] = {
258 /* left mixer */
259 {"Left Mixer", "Playback Switch", "Left DAC"},
260 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
261 {"Left Mixer", "Right Playback Switch", "Right DAC"},
262 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
263
264 /* right mixer */
265 {"Right Mixer", "Left Playback Switch", "Left DAC"},
266 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
267 {"Right Mixer", "Playback Switch", "Right DAC"},
268 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
269
270 /* left out 1 */
271 {"Left Out 1", NULL, "Left Mixer"},
272 {"LOUT1", NULL, "Left Out 1"},
273
274 /* left out 2 */
275 {"Left Out 2", NULL, "Left Mixer"},
276 {"LOUT2", NULL, "Left Out 2"},
277
278 /* right out 1 */
279 {"Right Out 1", NULL, "Right Mixer"},
280 {"ROUT1", NULL, "Right Out 1"},
281
282 /* right out 2 */
283 {"Right Out 2", NULL, "Right Mixer"},
284 {"ROUT2", NULL, "Right Out 2"},
285
286 /* mono mixer */
287 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
288 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
289 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
290 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
291
292 /* mono out */
293 {"Mono Out", NULL, "Mono Mixer"},
294 {"MONO1", NULL, "Mono Out"},
295
296 /* Left Line Mux */
297 {"Left Line Mux", "Line", "LINPUT1"},
298 {"Left Line Mux", "PGA", "Left PGA Mux"},
299 {"Left Line Mux", "Differential", "Differential Mux"},
300
301 /* Right Line Mux */
302 {"Right Line Mux", "Line", "RINPUT1"},
303 {"Right Line Mux", "Mic", "MIC"},
304 {"Right Line Mux", "PGA", "Right PGA Mux"},
305 {"Right Line Mux", "Differential", "Differential Mux"},
306
307 /* Left PGA Mux */
308 {"Left PGA Mux", "Line", "LINPUT1"},
309 {"Left PGA Mux", "Differential", "Differential Mux"},
310
311 /* Right PGA Mux */
312 {"Right PGA Mux", "Line", "RINPUT1"},
313 {"Right PGA Mux", "Differential", "Differential Mux"},
314
315 /* Differential Mux */
316 {"Differential Mux", "Line", "LINPUT1"},
317 {"Differential Mux", "Line", "RINPUT1"},
318
319 /* Left ADC Mux */
320 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
321 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
322 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
323
324 /* Right ADC Mux */
325 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
326 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
327 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
328
329 /* ADC */
330 {"Left ADC", NULL, "Left ADC Mux"},
331 {"Right ADC", NULL, "Right ADC Mux"},
332};
333
334static int wm8971_add_widgets(struct snd_soc_codec *codec)
335{
336 snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
337 ARRAY_SIZE(wm8971_dapm_widgets));
338
339 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
340
8bae3e23
KK		 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/* codec hifi mclk clock divider coefficients */
353static const struct _coeff_div coeff_div[] = {
354 /* 8k */
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 /* 11.025k */
362 {11289600, 11025, 1024, 0x18, 0x0},
363 {16934400, 11025, 1536, 0x19, 0x0},
364 {12000000, 11025, 1088, 0x19, 0x1},
365
366 /* 16k */
367 {12288000, 16000, 768, 0xa, 0x0},
368 {18432000, 16000, 1152, 0xb, 0x0},
369 {12000000, 16000, 750, 0xa, 0x1},
370
371 /* 22.05k */
372 {11289600, 22050, 512, 0x1a, 0x0},
373 {16934400, 22050, 768, 0x1b, 0x0},
374 {12000000, 22050, 544, 0x1b, 0x1},
375
376 /* 32k */
377 {12288000, 32000, 384, 0xc, 0x0},
378 {18432000, 32000, 576, 0xd, 0x0},
379 {12000000, 32000, 375, 0xa, 0x1},
380
381 /* 44.1k */
382 {11289600, 44100, 256, 0x10, 0x0},
383 {16934400, 44100, 384, 0x11, 0x0},
384 {12000000, 44100, 272, 0x11, 0x1},
385
386 /* 48k */
387 {12288000, 48000, 256, 0x0, 0x0},
388 {18432000, 48000, 384, 0x1, 0x0},
389 {12000000, 48000, 250, 0x0, 0x1},
390
391 /* 88.2k */
392 {11289600, 88200, 128, 0x1e, 0x0},
393 {16934400, 88200, 192, 0x1f, 0x0},
394 {12000000, 88200, 136, 0x1f, 0x1},
395
396 /* 96k */
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;
b2c812e2 417 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
8bae3e23
KK		 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 /* set master/slave audio interface */
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 /* interface format */
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 /* clock inversion */
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
17a52fd6 485 snd_soc_write(codec, WM8971_IFACE, iface);
8bae3e23
KK		 486 return 0;
487}
488
489static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
dee89c4d
MB		 490 struct snd_pcm_hw_params *params,
491 struct snd_soc_dai *dai)
8bae3e23
KK		 492{
493 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad 494 struct snd_soc_codec *codec = rtd->codec;
b2c812e2 495 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
17a52fd6
MB		 496 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
497 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
8bae3e23
KK		 498 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
499
500 /* bit size */
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 /* set iface & srate */
17a52fd6 516 snd_soc_write(codec, WM8971_IFACE, iface);
8bae3e23 517 if (coeff >= 0)
17a52fd6 518 snd_soc_write(codec, WM8971_SRATE, srate |
8bae3e23
KK		 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;
17a52fd6 527 u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7;
8bae3e23
KK		 528
529 if (mute)
17a52fd6 530 snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
8bae3e23 531 else
17a52fd6 532 snd_soc_write(codec, WM8971_ADCDAC, mute_reg);
8bae3e23
KK		 533 return 0;
534}
535
536static int wm8971_set_bias_level(struct snd_soc_codec *codec,
537 enum snd_soc_bias_level level)
538{
17a52fd6 539 u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
8bae3e23
KK		 540
541 switch (level) {
542 case SND_SOC_BIAS_ON:
543 /* set vmid to 50k and unmute dac */
17a52fd6 544 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
8bae3e23
KK		 545 break;
546 case SND_SOC_BIAS_PREPARE:
547 break;
548 case SND_SOC_BIAS_STANDBY:
549 /* mute dac and set vmid to 500k, enable VREF */
17a52fd6 550 snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
8bae3e23
KK		 551 break;
552 case SND_SOC_BIAS_OFF:
17a52fd6 553 snd_soc_write(codec, WM8971_PWR1, 0x0001);
8bae3e23
KK		 554 break;
555 }
556 codec->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
6335d055
EM		 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
f0fba2ad
LG		 574static struct snd_soc_dai_driver wm8971_dai = {
575 .name = "wm8971-hifi",
8bae3e23
KK		 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,},
6335d055 588 .ops = &wm8971_dai_ops,
8bae3e23 589};
8bae3e23
KK		 590
591static void wm8971_work(struct work_struct *work)
592{
593 struct snd_soc_codec *codec =
594 container_of(work, struct snd_soc_codec, delayed_work.work);
595 wm8971_set_bias_level(codec, codec->bias_level);
596}
597
f0fba2ad 598static int wm8971_suspend(struct snd_soc_codec *codec, pm_message_t state)
8bae3e23 599{
8bae3e23
KK		 600 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
601 return 0;
602}
603
f0fba2ad 604static int wm8971_resume(struct snd_soc_codec *codec)
8bae3e23 605{
8bae3e23
KK		 606 int i;
607 u8 data[2];
608 u16 *cache = codec->reg_cache;
609 u16 reg;
610
611 /* Sync reg_cache with the hardware */
612 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
613 if (i + 1 == WM8971_RESET)
614 continue;
615 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
616 data[1] = cache[i] & 0x00ff;
617 codec->hw_write(codec->control_data, data, 2);
618 }
619
620 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
621
622 /* charge wm8971 caps */
623 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
17a52fd6
MB		 624 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
625 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
8bae3e23
KK		 626 codec->bias_level = SND_SOC_BIAS_ON;
627 queue_delayed_work(wm8971_workq, &codec->delayed_work,
628 msecs_to_jiffies(1000));
629 }
630
631 return 0;
632}
633
f0fba2ad 634static int wm8971_probe(struct snd_soc_codec *codec)
8bae3e23 635{
f0fba2ad
LG		 636 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
637 int ret = 0;
638 u16 reg;
639
f0fba2ad 640 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8971->control_type);
17a52fd6
MB		 641 if (ret < 0) {
642 printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret);
f0fba2ad 643 return ret;
17a52fd6
MB		 644 }
645
f0fba2ad
LG		 646 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
647 wm8971_workq = create_workqueue("wm8971");
648 if (wm8971_workq == NULL)
649 return -ENOMEM;
8bae3e23 650
f0fba2ad 651 wm8971_reset(codec);
8bae3e23
KK		 652
653 /* charge output caps - set vmid to 5k for quick power up */
17a52fd6
MB		 654 reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e;
655 snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0);
8bae3e23
KK		 656 codec->bias_level = SND_SOC_BIAS_STANDBY;
657 queue_delayed_work(wm8971_workq, &codec->delayed_work,
658 msecs_to_jiffies(1000));
659
660 /* set the update bits */
17a52fd6
MB		 661 reg = snd_soc_read(codec, WM8971_LDAC);
662 snd_soc_write(codec, WM8971_LDAC, reg | 0x0100);
663 reg = snd_soc_read(codec, WM8971_RDAC);
664 snd_soc_write(codec, WM8971_RDAC, reg | 0x0100);
665
666 reg = snd_soc_read(codec, WM8971_LOUT1V);
667 snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100);
668 reg = snd_soc_read(codec, WM8971_ROUT1V);
669 snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100);
670
671 reg = snd_soc_read(codec, WM8971_LOUT2V);
672 snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100);
673 reg = snd_soc_read(codec, WM8971_ROUT2V);
674 snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100);
675
676 reg = snd_soc_read(codec, WM8971_LINVOL);
677 snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100);
678 reg = snd_soc_read(codec, WM8971_RINVOL);
679 snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100);
8bae3e23 680
3e8e1952
IM		 681 snd_soc_add_controls(codec, wm8971_snd_controls,
682 ARRAY_SIZE(wm8971_snd_controls));
8bae3e23 683 wm8971_add_widgets(codec);
fe3e78e0 684
8bae3e23 685 return ret;
8bae3e23
KK		 686}
687
8bae3e23 688
f0fba2ad
LG		 689/* power down chip */
690static int wm8971_remove(struct snd_soc_codec *codec)
691{
692 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
693
694 if (wm8971_workq)
695 destroy_workqueue(wm8971_workq);
696 return 0;
697}
698
699static struct snd_soc_codec_driver soc_codec_dev_wm8971 = {
700 .probe = wm8971_probe,
701 .remove = wm8971_remove,
702 .suspend = wm8971_suspend,
703 .resume = wm8971_resume,
704 .set_bias_level = wm8971_set_bias_level,
705 .reg_cache_size = ARRAY_SIZE(wm8971_reg),
706 .reg_word_size = sizeof(u16),
707 .reg_cache_default = wm8971_reg,
708};
8bae3e23 709
f0fba2ad
LG		 710#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
711static __devinit int wm8971_i2c_probe(struct i2c_client *i2c,
712 const struct i2c_device_id *id)
8bae3e23 713{
f0fba2ad 714 struct wm8971_priv *wm8971;
8bae3e23
KK		 715 int ret;
716
f0fba2ad
LG		 717 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
718 if (wm8971 == NULL)
719 return -ENOMEM;
8bae3e23 720
f0fba2ad 721 i2c_set_clientdata(i2c, wm8971);
8bae3e23 722
f0fba2ad
LG		 723 ret = snd_soc_register_codec(&i2c->dev,
724 &soc_codec_dev_wm8971, &wm8971_dai, 1);
8bae3e23 725 if (ret < 0)
f0fba2ad 726 kfree(wm8971);
8bae3e23
KK		 727 return ret;
728}
729
f0fba2ad 730static __devexit int wm8971_i2c_remove(struct i2c_client *client)
8bae3e23 731{
f0fba2ad
LG		 732 snd_soc_unregister_codec(&client->dev);
733 kfree(i2c_get_clientdata(client));
8bae3e23
KK		 734 return 0;
735}
736
737static const struct i2c_device_id wm8971_i2c_id[] = {
738 { "wm8971", 0 },
739 { }
740};
741MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
742
743static struct i2c_driver wm8971_i2c_driver = {
744 .driver = {
f0fba2ad 745 .name = "wm8971-codec",
8bae3e23
KK		 746 .owner = THIS_MODULE,
747 },
f0fba2ad
LG		 748 .probe = wm8971_i2c_probe,
749 .remove = __devexit_p(wm8971_i2c_remove),
8bae3e23
KK		 750 .id_table = wm8971_i2c_id,
751};
8bae3e23
KK		 752#endif
753
f0fba2ad 754static int __init wm8971_modinit(void)
8bae3e23 755{
8bae3e23 756 int ret = 0;
f0fba2ad
LG		 757#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
758 ret = i2c_add_driver(&wm8971_i2c_driver);
8bae3e23 759 if (ret != 0) {
f0fba2ad
LG		 760 printk(KERN_ERR "Failed to register WM8971 I2C driver: %d\n",
761 ret);
8bae3e23 762 }
8bae3e23 763#endif
f0fba2ad 764 return ret;
64089b84
MB		 765}
766module_init(wm8971_modinit);
767
768static void __exit wm8971_exit(void)
769{
f0fba2ad
LG		 770#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
771 i2c_del_driver(&wm8971_i2c_driver);
772#endif
64089b84
MB		 773}
774module_exit(wm8971_exit);
775
8bae3e23
KK		 776MODULE_DESCRIPTION("ASoC WM8971 driver");
777MODULE_AUTHOR("Lab126");
778MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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