2 * wm8971.c -- WM8971 ALSA SoC Audio driver
4 * Copyright 2005 Lab126, Inc.
6 * Author: Kenneth Kiraly <kiraly@lab126.com>
8 * Based on wm8753.c by Liam Girdwood
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.
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/init.h>
19 #include <linux/delay.h>
21 #include <linux/i2c.h>
22 #include <linux/regmap.h>
23 #include <linux/slab.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/pcm_params.h>
27 #include <sound/soc.h>
28 #include <sound/initval.h>
32 #define WM8971_REG_COUNT 43
34 /* codec private data */
40 * wm8971 register cache
41 * We can't read the WM8971 register space when we
42 * are using 2 wire for device control, so we cache them instead.
44 static const struct reg_default wm8971_reg_defaults
[] = {
90 #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0)
93 static const char *wm8971_bass
[] = { "Linear Control", "Adaptive Boost" };
94 static const char *wm8971_bass_filter
[] = { "130Hz @ 48kHz",
96 static const char *wm8971_treble
[] = { "8kHz", "4kHz" };
97 static const char *wm8971_alc_func
[] = { "Off", "Right", "Left", "Stereo" };
98 static const char *wm8971_ng_type
[] = { "Constant PGA Gain",
100 static const char *wm8971_deemp
[] = { "None", "32kHz", "44.1kHz", "48kHz" };
101 static const char *wm8971_mono_mux
[] = {"Stereo", "Mono (Left)",
102 "Mono (Right)", "Digital Mono"};
103 static const char *wm8971_dac_phase
[] = { "Non Inverted", "Inverted" };
104 static const char *wm8971_lline_mux
[] = {"Line", "NC", "NC", "PGA",
106 static const char *wm8971_rline_mux
[] = {"Line", "Mic", "NC", "PGA",
108 static const char *wm8971_lpga_sel
[] = {"Line", "NC", "NC", "Differential"};
109 static const char *wm8971_rpga_sel
[] = {"Line", "Mic", "NC", "Differential"};
110 static const char *wm8971_adcpol
[] = {"Normal", "L Invert", "R Invert",
113 static const struct soc_enum wm8971_enum
[] = {
114 SOC_ENUM_SINGLE(WM8971_BASS
, 7, 2, wm8971_bass
), /* 0 */
115 SOC_ENUM_SINGLE(WM8971_BASS
, 6, 2, wm8971_bass_filter
),
116 SOC_ENUM_SINGLE(WM8971_TREBLE
, 6, 2, wm8971_treble
),
117 SOC_ENUM_SINGLE(WM8971_ALC1
, 7, 4, wm8971_alc_func
),
118 SOC_ENUM_SINGLE(WM8971_NGATE
, 1, 2, wm8971_ng_type
), /* 4 */
119 SOC_ENUM_SINGLE(WM8971_ADCDAC
, 1, 4, wm8971_deemp
),
120 SOC_ENUM_SINGLE(WM8971_ADCTL1
, 4, 4, wm8971_mono_mux
),
121 SOC_ENUM_SINGLE(WM8971_ADCTL1
, 1, 2, wm8971_dac_phase
),
122 SOC_ENUM_SINGLE(WM8971_LOUTM1
, 0, 5, wm8971_lline_mux
), /* 8 */
123 SOC_ENUM_SINGLE(WM8971_ROUTM1
, 0, 5, wm8971_rline_mux
),
124 SOC_ENUM_SINGLE(WM8971_LADCIN
, 6, 4, wm8971_lpga_sel
),
125 SOC_ENUM_SINGLE(WM8971_RADCIN
, 6, 4, wm8971_rpga_sel
),
126 SOC_ENUM_SINGLE(WM8971_ADCDAC
, 5, 4, wm8971_adcpol
), /* 12 */
127 SOC_ENUM_SINGLE(WM8971_ADCIN
, 6, 4, wm8971_mono_mux
),
130 static const struct snd_kcontrol_new wm8971_snd_controls
[] = {
131 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL
, WM8971_RINVOL
, 0, 63, 0),
132 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL
, WM8971_RINVOL
,
134 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL
, WM8971_RINVOL
, 7, 1, 1),
136 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V
,
137 WM8971_ROUT1V
, 7, 1, 0),
138 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V
,
139 WM8971_ROUT2V
, 7, 1, 0),
140 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV
, 7, 1, 0),
142 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC
, WM8971_RDAC
, 0, 255, 0),
144 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1
,
145 WM8971_LOUTM2
, 4, 7, 1),
146 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1
,
147 WM8971_ROUTM2
, 4, 7, 1),
148 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1
,
149 WM8971_MOUTM2
, 4, 7, 1),
151 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V
,
152 WM8971_ROUT1V
, 0, 127, 0),
153 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V
,
154 WM8971_ROUT2V
, 0, 127, 0),
156 SOC_ENUM("Bass Boost", wm8971_enum
[0]),
157 SOC_ENUM("Bass Filter", wm8971_enum
[1]),
158 SOC_SINGLE("Bass Volume", WM8971_BASS
, 0, 7, 1),
160 SOC_SINGLE("Treble Volume", WM8971_TREBLE
, 0, 7, 0),
161 SOC_ENUM("Treble Cut-off", wm8971_enum
[2]),
163 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC
, 0, 1, 1),
165 SOC_SINGLE("ALC Target Volume", WM8971_ALC1
, 0, 7, 0),
166 SOC_SINGLE("ALC Max Volume", WM8971_ALC1
, 4, 7, 0),
168 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1
, 0, 7, 0),
169 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1
, 4, 7, 0),
170 SOC_ENUM("ALC Capture Function", wm8971_enum
[3]),
171 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2
, 7, 1, 0),
172 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2
, 0, 15, 0),
173 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3
, 4, 15, 0),
174 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3
, 0, 15, 0),
175 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE
, 3, 31, 0),
176 SOC_ENUM("ALC Capture NG Type", wm8971_enum
[4]),
177 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE
, 0, 1, 0),
179 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC
, 8, 1, 0),
180 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC
, 7, 1, 0),
182 SOC_ENUM("Playback De-emphasis", wm8971_enum
[5]),
183 SOC_ENUM("Playback Function", wm8971_enum
[6]),
184 SOC_ENUM("Playback Phase", wm8971_enum
[7]),
186 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN
, WM8971_RADCIN
, 4, 3, 0),
194 static const struct snd_kcontrol_new wm8971_left_mixer_controls
[] = {
195 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1
, 8, 1, 0),
196 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1
, 7, 1, 0),
197 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2
, 8, 1, 0),
198 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2
, 7, 1, 0),
202 static const struct snd_kcontrol_new wm8971_right_mixer_controls
[] = {
203 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1
, 8, 1, 0),
204 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1
, 7, 1, 0),
205 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2
, 8, 1, 0),
206 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2
, 7, 1, 0),
210 static const struct snd_kcontrol_new wm8971_mono_mixer_controls
[] = {
211 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1
, 8, 1, 0),
212 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1
, 7, 1, 0),
213 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2
, 8, 1, 0),
214 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2
, 7, 1, 0),
218 static const struct snd_kcontrol_new wm8971_left_line_controls
=
219 SOC_DAPM_ENUM("Route", wm8971_enum
[8]);
222 static const struct snd_kcontrol_new wm8971_right_line_controls
=
223 SOC_DAPM_ENUM("Route", wm8971_enum
[9]);
226 static const struct snd_kcontrol_new wm8971_left_pga_controls
=
227 SOC_DAPM_ENUM("Route", wm8971_enum
[10]);
230 static const struct snd_kcontrol_new wm8971_right_pga_controls
=
231 SOC_DAPM_ENUM("Route", wm8971_enum
[11]);
234 static const struct snd_kcontrol_new wm8971_monomux_controls
=
235 SOC_DAPM_ENUM("Route", wm8971_enum
[13]);
237 static const struct snd_soc_dapm_widget wm8971_dapm_widgets
[] = {
238 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM
, 0, 0,
239 &wm8971_left_mixer_controls
[0],
240 ARRAY_SIZE(wm8971_left_mixer_controls
)),
241 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM
, 0, 0,
242 &wm8971_right_mixer_controls
[0],
243 ARRAY_SIZE(wm8971_right_mixer_controls
)),
244 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2
, 2, 0,
245 &wm8971_mono_mixer_controls
[0],
246 ARRAY_SIZE(wm8971_mono_mixer_controls
)),
248 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2
, 3, 0, NULL
, 0),
249 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2
, 4, 0, NULL
, 0),
250 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2
, 5, 0, NULL
, 0),
251 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2
, 6, 0, NULL
, 0),
252 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2
, 7, 0),
253 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2
, 8, 0),
254 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2
, 2, 0, NULL
, 0),
256 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1
, 1, 0, NULL
, 0),
257 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1
, 2, 0),
258 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1
, 3, 0),
260 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1
, 5, 0,
261 &wm8971_left_pga_controls
),
262 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1
, 4, 0,
263 &wm8971_right_pga_controls
),
264 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM
, 0, 0,
265 &wm8971_left_line_controls
),
266 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM
, 0, 0,
267 &wm8971_right_line_controls
),
269 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM
, 0, 0,
270 &wm8971_monomux_controls
),
271 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM
, 0, 0,
272 &wm8971_monomux_controls
),
274 SND_SOC_DAPM_OUTPUT("LOUT1"),
275 SND_SOC_DAPM_OUTPUT("ROUT1"),
276 SND_SOC_DAPM_OUTPUT("LOUT2"),
277 SND_SOC_DAPM_OUTPUT("ROUT2"),
278 SND_SOC_DAPM_OUTPUT("MONO"),
280 SND_SOC_DAPM_INPUT("LINPUT1"),
281 SND_SOC_DAPM_INPUT("RINPUT1"),
282 SND_SOC_DAPM_INPUT("MIC"),
285 static const struct snd_soc_dapm_route wm8971_dapm_routes
[] = {
287 {"Left Mixer", "Playback Switch", "Left DAC"},
288 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
289 {"Left Mixer", "Right Playback Switch", "Right DAC"},
290 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
293 {"Right Mixer", "Left Playback Switch", "Left DAC"},
294 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
295 {"Right Mixer", "Playback Switch", "Right DAC"},
296 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
299 {"Left Out 1", NULL
, "Left Mixer"},
300 {"LOUT1", NULL
, "Left Out 1"},
303 {"Left Out 2", NULL
, "Left Mixer"},
304 {"LOUT2", NULL
, "Left Out 2"},
307 {"Right Out 1", NULL
, "Right Mixer"},
308 {"ROUT1", NULL
, "Right Out 1"},
311 {"Right Out 2", NULL
, "Right Mixer"},
312 {"ROUT2", NULL
, "Right Out 2"},
315 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
316 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
317 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
318 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
321 {"Mono Out", NULL
, "Mono Mixer"},
322 {"MONO1", NULL
, "Mono Out"},
325 {"Left Line Mux", "Line", "LINPUT1"},
326 {"Left Line Mux", "PGA", "Left PGA Mux"},
327 {"Left Line Mux", "Differential", "Differential Mux"},
330 {"Right Line Mux", "Line", "RINPUT1"},
331 {"Right Line Mux", "Mic", "MIC"},
332 {"Right Line Mux", "PGA", "Right PGA Mux"},
333 {"Right Line Mux", "Differential", "Differential Mux"},
336 {"Left PGA Mux", "Line", "LINPUT1"},
337 {"Left PGA Mux", "Differential", "Differential Mux"},
340 {"Right PGA Mux", "Line", "RINPUT1"},
341 {"Right PGA Mux", "Differential", "Differential Mux"},
343 /* Differential Mux */
344 {"Differential Mux", "Line", "LINPUT1"},
345 {"Differential Mux", "Line", "RINPUT1"},
348 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
349 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
350 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
353 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
354 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
355 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
358 {"Left ADC", NULL
, "Left ADC Mux"},
359 {"Right ADC", NULL
, "Right ADC Mux"},
370 /* codec hifi mclk clock divider coefficients */
371 static const struct _coeff_div coeff_div
[] = {
373 {12288000, 8000, 1536, 0x6, 0x0},
374 {11289600, 8000, 1408, 0x16, 0x0},
375 {18432000, 8000, 2304, 0x7, 0x0},
376 {16934400, 8000, 2112, 0x17, 0x0},
377 {12000000, 8000, 1500, 0x6, 0x1},
380 {11289600, 11025, 1024, 0x18, 0x0},
381 {16934400, 11025, 1536, 0x19, 0x0},
382 {12000000, 11025, 1088, 0x19, 0x1},
385 {12288000, 16000, 768, 0xa, 0x0},
386 {18432000, 16000, 1152, 0xb, 0x0},
387 {12000000, 16000, 750, 0xa, 0x1},
390 {11289600, 22050, 512, 0x1a, 0x0},
391 {16934400, 22050, 768, 0x1b, 0x0},
392 {12000000, 22050, 544, 0x1b, 0x1},
395 {12288000, 32000, 384, 0xc, 0x0},
396 {18432000, 32000, 576, 0xd, 0x0},
397 {12000000, 32000, 375, 0xa, 0x1},
400 {11289600, 44100, 256, 0x10, 0x0},
401 {16934400, 44100, 384, 0x11, 0x0},
402 {12000000, 44100, 272, 0x11, 0x1},
405 {12288000, 48000, 256, 0x0, 0x0},
406 {18432000, 48000, 384, 0x1, 0x0},
407 {12000000, 48000, 250, 0x0, 0x1},
410 {11289600, 88200, 128, 0x1e, 0x0},
411 {16934400, 88200, 192, 0x1f, 0x0},
412 {12000000, 88200, 136, 0x1f, 0x1},
415 {12288000, 96000, 128, 0xe, 0x0},
416 {18432000, 96000, 192, 0xf, 0x0},
417 {12000000, 96000, 125, 0xe, 0x1},
420 static int get_coeff(int mclk
, int rate
)
424 for (i
= 0; i
< ARRAY_SIZE(coeff_div
); i
++) {
425 if (coeff_div
[i
].rate
== rate
&& coeff_div
[i
].mclk
== mclk
)
431 static int wm8971_set_dai_sysclk(struct snd_soc_dai
*codec_dai
,
432 int clk_id
, unsigned int freq
, int dir
)
434 struct snd_soc_codec
*codec
= codec_dai
->codec
;
435 struct wm8971_priv
*wm8971
= snd_soc_codec_get_drvdata(codec
);
443 wm8971
->sysclk
= freq
;
449 static int wm8971_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
452 struct snd_soc_codec
*codec
= codec_dai
->codec
;
455 /* set master/slave audio interface */
456 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
457 case SND_SOC_DAIFMT_CBM_CFM
:
460 case SND_SOC_DAIFMT_CBS_CFS
:
466 /* interface format */
467 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
468 case SND_SOC_DAIFMT_I2S
:
471 case SND_SOC_DAIFMT_RIGHT_J
:
473 case SND_SOC_DAIFMT_LEFT_J
:
476 case SND_SOC_DAIFMT_DSP_A
:
479 case SND_SOC_DAIFMT_DSP_B
:
486 /* clock inversion */
487 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
488 case SND_SOC_DAIFMT_NB_NF
:
490 case SND_SOC_DAIFMT_IB_IF
:
493 case SND_SOC_DAIFMT_IB_NF
:
496 case SND_SOC_DAIFMT_NB_IF
:
503 snd_soc_write(codec
, WM8971_IFACE
, iface
);
507 static int wm8971_pcm_hw_params(struct snd_pcm_substream
*substream
,
508 struct snd_pcm_hw_params
*params
,
509 struct snd_soc_dai
*dai
)
511 struct snd_soc_codec
*codec
= dai
->codec
;
512 struct wm8971_priv
*wm8971
= snd_soc_codec_get_drvdata(codec
);
513 u16 iface
= snd_soc_read(codec
, WM8971_IFACE
) & 0x1f3;
514 u16 srate
= snd_soc_read(codec
, WM8971_SRATE
) & 0x1c0;
515 int coeff
= get_coeff(wm8971
->sysclk
, params_rate(params
));
518 switch (params_width(params
)) {
532 /* set iface & srate */
533 snd_soc_write(codec
, WM8971_IFACE
, iface
);
535 snd_soc_write(codec
, WM8971_SRATE
, srate
|
536 (coeff_div
[coeff
].sr
<< 1) | coeff_div
[coeff
].usb
);
541 static int wm8971_mute(struct snd_soc_dai
*dai
, int mute
)
543 struct snd_soc_codec
*codec
= dai
->codec
;
544 u16 mute_reg
= snd_soc_read(codec
, WM8971_ADCDAC
) & 0xfff7;
547 snd_soc_write(codec
, WM8971_ADCDAC
, mute_reg
| 0x8);
549 snd_soc_write(codec
, WM8971_ADCDAC
, mute_reg
);
553 static int wm8971_set_bias_level(struct snd_soc_codec
*codec
,
554 enum snd_soc_bias_level level
)
556 u16 pwr_reg
= snd_soc_read(codec
, WM8971_PWR1
) & 0xfe3e;
559 case SND_SOC_BIAS_ON
:
560 /* set vmid to 50k and unmute dac */
561 snd_soc_write(codec
, WM8971_PWR1
, pwr_reg
| 0x00c1);
563 case SND_SOC_BIAS_PREPARE
:
565 case SND_SOC_BIAS_STANDBY
:
566 if (codec
->dapm
.bias_level
== SND_SOC_BIAS_OFF
)
567 snd_soc_cache_sync(codec
);
569 /* mute dac and set vmid to 500k, enable VREF */
570 snd_soc_write(codec
, WM8971_PWR1
, pwr_reg
| 0x0140);
572 case SND_SOC_BIAS_OFF
:
573 snd_soc_write(codec
, WM8971_PWR1
, 0x0001);
576 codec
->dapm
.bias_level
= level
;
580 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
581 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
582 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
584 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
585 SNDRV_PCM_FMTBIT_S24_LE)
587 static const struct snd_soc_dai_ops wm8971_dai_ops
= {
588 .hw_params
= wm8971_pcm_hw_params
,
589 .digital_mute
= wm8971_mute
,
590 .set_fmt
= wm8971_set_dai_fmt
,
591 .set_sysclk
= wm8971_set_dai_sysclk
,
594 static struct snd_soc_dai_driver wm8971_dai
= {
595 .name
= "wm8971-hifi",
597 .stream_name
= "Playback",
600 .rates
= WM8971_RATES
,
601 .formats
= WM8971_FORMATS
,},
603 .stream_name
= "Capture",
606 .rates
= WM8971_RATES
,
607 .formats
= WM8971_FORMATS
,},
608 .ops
= &wm8971_dai_ops
,
611 static void wm8971_work(struct work_struct
*work
)
613 struct snd_soc_dapm_context
*dapm
=
614 container_of(work
, struct snd_soc_dapm_context
,
616 struct snd_soc_codec
*codec
= snd_soc_dapm_to_codec(dapm
);
617 wm8971_set_bias_level(codec
, codec
->dapm
.bias_level
);
620 static int wm8971_suspend(struct snd_soc_codec
*codec
)
622 wm8971_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
626 static int wm8971_resume(struct snd_soc_codec
*codec
)
630 wm8971_set_bias_level(codec
, SND_SOC_BIAS_STANDBY
);
632 /* charge wm8971 caps */
633 if (codec
->dapm
.suspend_bias_level
== SND_SOC_BIAS_ON
) {
634 reg
= snd_soc_read(codec
, WM8971_PWR1
) & 0xfe3e;
635 snd_soc_write(codec
, WM8971_PWR1
, reg
| 0x01c0);
636 codec
->dapm
.bias_level
= SND_SOC_BIAS_ON
;
637 queue_delayed_work(system_power_efficient_wq
,
638 &codec
->dapm
.delayed_work
,
639 msecs_to_jiffies(1000));
645 static int wm8971_probe(struct snd_soc_codec
*codec
)
650 INIT_DELAYED_WORK(&codec
->dapm
.delayed_work
, wm8971_work
);
654 /* charge output caps - set vmid to 5k for quick power up */
655 reg
= snd_soc_read(codec
, WM8971_PWR1
) & 0xfe3e;
656 snd_soc_write(codec
, WM8971_PWR1
, reg
| 0x01c0);
657 codec
->dapm
.bias_level
= SND_SOC_BIAS_STANDBY
;
658 queue_delayed_work(system_power_efficient_wq
,
659 &codec
->dapm
.delayed_work
,
660 msecs_to_jiffies(1000));
662 /* set the update bits */
663 snd_soc_update_bits(codec
, WM8971_LDAC
, 0x0100, 0x0100);
664 snd_soc_update_bits(codec
, WM8971_RDAC
, 0x0100, 0x0100);
665 snd_soc_update_bits(codec
, WM8971_LOUT1V
, 0x0100, 0x0100);
666 snd_soc_update_bits(codec
, WM8971_ROUT1V
, 0x0100, 0x0100);
667 snd_soc_update_bits(codec
, WM8971_LOUT2V
, 0x0100, 0x0100);
668 snd_soc_update_bits(codec
, WM8971_ROUT2V
, 0x0100, 0x0100);
669 snd_soc_update_bits(codec
, WM8971_LINVOL
, 0x0100, 0x0100);
670 snd_soc_update_bits(codec
, WM8971_RINVOL
, 0x0100, 0x0100);
676 /* power down chip */
677 static int wm8971_remove(struct snd_soc_codec
*codec
)
679 wm8971_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
684 static struct snd_soc_codec_driver soc_codec_dev_wm8971
= {
685 .probe
= wm8971_probe
,
686 .remove
= wm8971_remove
,
687 .suspend
= wm8971_suspend
,
688 .resume
= wm8971_resume
,
689 .set_bias_level
= wm8971_set_bias_level
,
691 .controls
= wm8971_snd_controls
,
692 .num_controls
= ARRAY_SIZE(wm8971_snd_controls
),
693 .dapm_widgets
= wm8971_dapm_widgets
,
694 .num_dapm_widgets
= ARRAY_SIZE(wm8971_dapm_widgets
),
695 .dapm_routes
= wm8971_dapm_routes
,
696 .num_dapm_routes
= ARRAY_SIZE(wm8971_dapm_routes
),
699 static const struct regmap_config wm8971_regmap
= {
702 .max_register
= WM8971_MOUTV
,
704 .reg_defaults
= wm8971_reg_defaults
,
705 .num_reg_defaults
= ARRAY_SIZE(wm8971_reg_defaults
),
706 .cache_type
= REGCACHE_RBTREE
,
709 static int wm8971_i2c_probe(struct i2c_client
*i2c
,
710 const struct i2c_device_id
*id
)
712 struct wm8971_priv
*wm8971
;
713 struct regmap
*regmap
;
716 wm8971
= devm_kzalloc(&i2c
->dev
, sizeof(struct wm8971_priv
),
721 regmap
= devm_regmap_init_i2c(i2c
, &wm8971_regmap
);
723 return PTR_ERR(regmap
);
725 i2c_set_clientdata(i2c
, wm8971
);
727 ret
= snd_soc_register_codec(&i2c
->dev
,
728 &soc_codec_dev_wm8971
, &wm8971_dai
, 1);
733 static int wm8971_i2c_remove(struct i2c_client
*client
)
735 snd_soc_unregister_codec(&client
->dev
);
739 static const struct i2c_device_id wm8971_i2c_id
[] = {
743 MODULE_DEVICE_TABLE(i2c
, wm8971_i2c_id
);
745 static struct i2c_driver wm8971_i2c_driver
= {
748 .owner
= THIS_MODULE
,
750 .probe
= wm8971_i2c_probe
,
751 .remove
= wm8971_i2c_remove
,
752 .id_table
= wm8971_i2c_id
,
755 module_i2c_driver(wm8971_i2c_driver
);
757 MODULE_DESCRIPTION("ASoC WM8971 driver");
758 MODULE_AUTHOR("Lab126");
759 MODULE_LICENSE("GPL");