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/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>
32 #define WM8971_VERSION "0.9"
34 #define WM8971_REG_COUNT 43
36 static struct workqueue_struct *wm8971_workq = NULL;
38 /* codec private data */
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.
48 static 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 */
62 static inline unsigned int wm8971_read_reg_cache(struct snd_soc_codec *codec,
65 u16 *cache = codec->reg_cache;
66 if (reg < WM8971_REG_COUNT)
72 static inline void wm8971_write_reg_cache(struct snd_soc_codec *codec,
73 unsigned int reg, unsigned int value)
75 u16 *cache = codec->reg_cache;
76 if (reg < WM8971_REG_COUNT)
80 static int wm8971_write(struct snd_soc_codec *codec, unsigned int reg,
86 * D15..D9 WM8753 register offset
87 * D8...D0 register data
89 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
90 data[1] = value & 0x00ff;
92 wm8971_write_reg_cache (codec, reg, value);
93 if (codec->hw_write(codec->control_data, data, 2) == 2)
99 #define wm8971_reset(c) wm8971_write(c, WM8971_RESET, 0)
101 /* WM8971 Controls */
102 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
103 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
105 static const char *wm8971_treble[] = { "8kHz", "4kHz" };
106 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
107 static const char *wm8971_ng_type[] = { "Constant PGA Gain",
109 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
110 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
111 "Mono (Right)", "Digital Mono"};
112 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
113 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
115 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
117 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
118 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
119 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
122 static 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),
139 static 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,
143 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
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),
151 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
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),
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),
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),
169 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
170 SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
172 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
174 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
175 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
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),
188 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
189 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
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]),
195 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
203 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
204 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
205 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
206 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
207 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
211 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
212 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
213 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
214 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
215 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
219 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
220 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
221 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
222 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
223 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
227 static const struct snd_kcontrol_new wm8971_left_line_controls =
228 SOC_DAPM_ENUM("Route", wm8971_enum[8]);
231 static const struct snd_kcontrol_new wm8971_right_line_controls =
232 SOC_DAPM_ENUM("Route", wm8971_enum[9]);
235 static const struct snd_kcontrol_new wm8971_left_pga_controls =
236 SOC_DAPM_ENUM("Route", wm8971_enum[10]);
239 static const struct snd_kcontrol_new wm8971_right_pga_controls =
240 SOC_DAPM_ENUM("Route", wm8971_enum[11]);
243 static const struct snd_kcontrol_new wm8971_monomux_controls =
244 SOC_DAPM_ENUM("Route", wm8971_enum[13]);
246 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
247 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
248 &wm8971_left_mixer_controls[0],
249 ARRAY_SIZE(wm8971_left_mixer_controls)),
250 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
251 &wm8971_right_mixer_controls[0],
252 ARRAY_SIZE(wm8971_right_mixer_controls)),
253 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
254 &wm8971_mono_mixer_controls[0],
255 ARRAY_SIZE(wm8971_mono_mixer_controls)),
257 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
258 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
259 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
260 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
261 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
262 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
263 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
265 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0),
266 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
267 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
269 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
270 &wm8971_left_pga_controls),
271 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
272 &wm8971_right_pga_controls),
273 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
274 &wm8971_left_line_controls),
275 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
276 &wm8971_right_line_controls),
278 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
279 &wm8971_monomux_controls),
280 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
281 &wm8971_monomux_controls),
283 SND_SOC_DAPM_OUTPUT("LOUT1"),
284 SND_SOC_DAPM_OUTPUT("ROUT1"),
285 SND_SOC_DAPM_OUTPUT("LOUT2"),
286 SND_SOC_DAPM_OUTPUT("ROUT2"),
287 SND_SOC_DAPM_OUTPUT("MONO"),
289 SND_SOC_DAPM_INPUT("LINPUT1"),
290 SND_SOC_DAPM_INPUT("RINPUT1"),
291 SND_SOC_DAPM_INPUT("MIC"),
294 static const struct snd_soc_dapm_route audio_map[] = {
296 {"Left Mixer", "Playback Switch", "Left DAC"},
297 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
298 {"Left Mixer", "Right Playback Switch", "Right DAC"},
299 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
302 {"Right Mixer", "Left Playback Switch", "Left DAC"},
303 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
304 {"Right Mixer", "Playback Switch", "Right DAC"},
305 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
308 {"Left Out 1", NULL, "Left Mixer"},
309 {"LOUT1", NULL, "Left Out 1"},
312 {"Left Out 2", NULL, "Left Mixer"},
313 {"LOUT2", NULL, "Left Out 2"},
316 {"Right Out 1", NULL, "Right Mixer"},
317 {"ROUT1", NULL, "Right Out 1"},
320 {"Right Out 2", NULL, "Right Mixer"},
321 {"ROUT2", NULL, "Right Out 2"},
324 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
325 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
326 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
327 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
330 {"Mono Out", NULL, "Mono Mixer"},
331 {"MONO1", NULL, "Mono Out"},
334 {"Left Line Mux", "Line", "LINPUT1"},
335 {"Left Line Mux", "PGA", "Left PGA Mux"},
336 {"Left Line Mux", "Differential", "Differential Mux"},
339 {"Right Line Mux", "Line", "RINPUT1"},
340 {"Right Line Mux", "Mic", "MIC"},
341 {"Right Line Mux", "PGA", "Right PGA Mux"},
342 {"Right Line Mux", "Differential", "Differential Mux"},
345 {"Left PGA Mux", "Line", "LINPUT1"},
346 {"Left PGA Mux", "Differential", "Differential Mux"},
349 {"Right PGA Mux", "Line", "RINPUT1"},
350 {"Right PGA Mux", "Differential", "Differential Mux"},
352 /* Differential Mux */
353 {"Differential Mux", "Line", "LINPUT1"},
354 {"Differential Mux", "Line", "RINPUT1"},
357 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
358 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
359 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
362 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
363 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
364 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
367 {"Left ADC", NULL, "Left ADC Mux"},
368 {"Right ADC", NULL, "Right ADC Mux"},
371 static int wm8971_add_widgets(struct snd_soc_codec *codec)
373 snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets,
374 ARRAY_SIZE(wm8971_dapm_widgets));
376 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
378 snd_soc_dapm_new_widgets(codec);
391 /* codec hifi mclk clock divider coefficients */
392 static const struct _coeff_div coeff_div[] = {
394 {12288000, 8000, 1536, 0x6, 0x0},
395 {11289600, 8000, 1408, 0x16, 0x0},
396 {18432000, 8000, 2304, 0x7, 0x0},
397 {16934400, 8000, 2112, 0x17, 0x0},
398 {12000000, 8000, 1500, 0x6, 0x1},
401 {11289600, 11025, 1024, 0x18, 0x0},
402 {16934400, 11025, 1536, 0x19, 0x0},
403 {12000000, 11025, 1088, 0x19, 0x1},
406 {12288000, 16000, 768, 0xa, 0x0},
407 {18432000, 16000, 1152, 0xb, 0x0},
408 {12000000, 16000, 750, 0xa, 0x1},
411 {11289600, 22050, 512, 0x1a, 0x0},
412 {16934400, 22050, 768, 0x1b, 0x0},
413 {12000000, 22050, 544, 0x1b, 0x1},
416 {12288000, 32000, 384, 0xc, 0x0},
417 {18432000, 32000, 576, 0xd, 0x0},
418 {12000000, 32000, 375, 0xa, 0x1},
421 {11289600, 44100, 256, 0x10, 0x0},
422 {16934400, 44100, 384, 0x11, 0x0},
423 {12000000, 44100, 272, 0x11, 0x1},
426 {12288000, 48000, 256, 0x0, 0x0},
427 {18432000, 48000, 384, 0x1, 0x0},
428 {12000000, 48000, 250, 0x0, 0x1},
431 {11289600, 88200, 128, 0x1e, 0x0},
432 {16934400, 88200, 192, 0x1f, 0x0},
433 {12000000, 88200, 136, 0x1f, 0x1},
436 {12288000, 96000, 128, 0xe, 0x0},
437 {18432000, 96000, 192, 0xf, 0x0},
438 {12000000, 96000, 125, 0xe, 0x1},
441 static int get_coeff(int mclk, int rate)
445 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
446 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
452 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
453 int clk_id, unsigned int freq, int dir)
455 struct snd_soc_codec *codec = codec_dai->codec;
456 struct wm8971_priv *wm8971 = codec->private_data;
464 wm8971->sysclk = freq;
470 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
473 struct snd_soc_codec *codec = codec_dai->codec;
476 /* set master/slave audio interface */
477 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
478 case SND_SOC_DAIFMT_CBM_CFM:
481 case SND_SOC_DAIFMT_CBS_CFS:
487 /* interface format */
488 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
489 case SND_SOC_DAIFMT_I2S:
492 case SND_SOC_DAIFMT_RIGHT_J:
494 case SND_SOC_DAIFMT_LEFT_J:
497 case SND_SOC_DAIFMT_DSP_A:
500 case SND_SOC_DAIFMT_DSP_B:
507 /* clock inversion */
508 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
509 case SND_SOC_DAIFMT_NB_NF:
511 case SND_SOC_DAIFMT_IB_IF:
514 case SND_SOC_DAIFMT_IB_NF:
517 case SND_SOC_DAIFMT_NB_IF:
524 wm8971_write(codec, WM8971_IFACE, iface);
528 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
529 struct snd_pcm_hw_params *params,
530 struct snd_soc_dai *dai)
532 struct snd_soc_pcm_runtime *rtd = substream->private_data;
533 struct snd_soc_device *socdev = rtd->socdev;
534 struct snd_soc_codec *codec = socdev->card->codec;
535 struct wm8971_priv *wm8971 = codec->private_data;
536 u16 iface = wm8971_read_reg_cache(codec, WM8971_IFACE) & 0x1f3;
537 u16 srate = wm8971_read_reg_cache(codec, WM8971_SRATE) & 0x1c0;
538 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
541 switch (params_format(params)) {
542 case SNDRV_PCM_FORMAT_S16_LE:
544 case SNDRV_PCM_FORMAT_S20_3LE:
547 case SNDRV_PCM_FORMAT_S24_LE:
550 case SNDRV_PCM_FORMAT_S32_LE:
555 /* set iface & srate */
556 wm8971_write(codec, WM8971_IFACE, iface);
558 wm8971_write(codec, WM8971_SRATE, srate |
559 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
564 static int wm8971_mute(struct snd_soc_dai *dai, int mute)
566 struct snd_soc_codec *codec = dai->codec;
567 u16 mute_reg = wm8971_read_reg_cache(codec, WM8971_ADCDAC) & 0xfff7;
570 wm8971_write(codec, WM8971_ADCDAC, mute_reg | 0x8);
572 wm8971_write(codec, WM8971_ADCDAC, mute_reg);
576 static int wm8971_set_bias_level(struct snd_soc_codec *codec,
577 enum snd_soc_bias_level level)
579 u16 pwr_reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
582 case SND_SOC_BIAS_ON:
583 /* set vmid to 50k and unmute dac */
584 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x00c1);
586 case SND_SOC_BIAS_PREPARE:
588 case SND_SOC_BIAS_STANDBY:
589 /* mute dac and set vmid to 500k, enable VREF */
590 wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x0140);
592 case SND_SOC_BIAS_OFF:
593 wm8971_write(codec, WM8971_PWR1, 0x0001);
596 codec->bias_level = level;
600 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
601 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
602 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
604 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
605 SNDRV_PCM_FMTBIT_S24_LE)
607 static struct snd_soc_dai_ops wm8971_dai_ops = {
608 .hw_params = wm8971_pcm_hw_params,
609 .digital_mute = wm8971_mute,
610 .set_fmt = wm8971_set_dai_fmt,
611 .set_sysclk = wm8971_set_dai_sysclk,
614 struct snd_soc_dai wm8971_dai = {
617 .stream_name = "Playback",
620 .rates = WM8971_RATES,
621 .formats = WM8971_FORMATS,},
623 .stream_name = "Capture",
626 .rates = WM8971_RATES,
627 .formats = WM8971_FORMATS,},
628 .ops = &wm8971_dai_ops,
630 EXPORT_SYMBOL_GPL(wm8971_dai);
632 static void wm8971_work(struct work_struct *work)
634 struct snd_soc_codec *codec =
635 container_of(work, struct snd_soc_codec, delayed_work.work);
636 wm8971_set_bias_level(codec, codec->bias_level);
639 static int wm8971_suspend(struct platform_device *pdev, pm_message_t state)
641 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
642 struct snd_soc_codec *codec = socdev->card->codec;
644 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
648 static int wm8971_resume(struct platform_device *pdev)
650 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
651 struct snd_soc_codec *codec = socdev->card->codec;
654 u16 *cache = codec->reg_cache;
657 /* Sync reg_cache with the hardware */
658 for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) {
659 if (i + 1 == WM8971_RESET)
661 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
662 data[1] = cache[i] & 0x00ff;
663 codec->hw_write(codec->control_data, data, 2);
666 wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
668 /* charge wm8971 caps */
669 if (codec->suspend_bias_level == SND_SOC_BIAS_ON) {
670 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
671 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
672 codec->bias_level = SND_SOC_BIAS_ON;
673 queue_delayed_work(wm8971_workq, &codec->delayed_work,
674 msecs_to_jiffies(1000));
680 static int wm8971_init(struct snd_soc_device *socdev)
682 struct snd_soc_codec *codec = socdev->card->codec;
685 codec->name = "WM8971";
686 codec->owner = THIS_MODULE;
687 codec->read = wm8971_read_reg_cache;
688 codec->write = wm8971_write;
689 codec->set_bias_level = wm8971_set_bias_level;
690 codec->dai = &wm8971_dai;
691 codec->reg_cache_size = ARRAY_SIZE(wm8971_reg);
693 codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL);
695 if (codec->reg_cache == NULL)
701 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
703 printk(KERN_ERR "wm8971: failed to create pcms\n");
707 /* charge output caps - set vmid to 5k for quick power up */
708 reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e;
709 wm8971_write(codec, WM8971_PWR1, reg | 0x01c0);
710 codec->bias_level = SND_SOC_BIAS_STANDBY;
711 queue_delayed_work(wm8971_workq, &codec->delayed_work,
712 msecs_to_jiffies(1000));
714 /* set the update bits */
715 reg = wm8971_read_reg_cache(codec, WM8971_LDAC);
716 wm8971_write(codec, WM8971_LDAC, reg | 0x0100);
717 reg = wm8971_read_reg_cache(codec, WM8971_RDAC);
718 wm8971_write(codec, WM8971_RDAC, reg | 0x0100);
720 reg = wm8971_read_reg_cache(codec, WM8971_LOUT1V);
721 wm8971_write(codec, WM8971_LOUT1V, reg | 0x0100);
722 reg = wm8971_read_reg_cache(codec, WM8971_ROUT1V);
723 wm8971_write(codec, WM8971_ROUT1V, reg | 0x0100);
725 reg = wm8971_read_reg_cache(codec, WM8971_LOUT2V);
726 wm8971_write(codec, WM8971_LOUT2V, reg | 0x0100);
727 reg = wm8971_read_reg_cache(codec, WM8971_ROUT2V);
728 wm8971_write(codec, WM8971_ROUT2V, reg | 0x0100);
730 reg = wm8971_read_reg_cache(codec, WM8971_LINVOL);
731 wm8971_write(codec, WM8971_LINVOL, reg | 0x0100);
732 reg = wm8971_read_reg_cache(codec, WM8971_RINVOL);
733 wm8971_write(codec, WM8971_RINVOL, reg | 0x0100);
735 snd_soc_add_controls(codec, wm8971_snd_controls,
736 ARRAY_SIZE(wm8971_snd_controls));
737 wm8971_add_widgets(codec);
738 ret = snd_soc_init_card(socdev);
740 printk(KERN_ERR "wm8971: failed to register card\n");
746 snd_soc_free_pcms(socdev);
747 snd_soc_dapm_free(socdev);
749 kfree(codec->reg_cache);
753 /* If the i2c layer weren't so broken, we could pass this kind of data
755 static struct snd_soc_device *wm8971_socdev;
757 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
759 static int wm8971_i2c_probe(struct i2c_client *i2c,
760 const struct i2c_device_id *id)
762 struct snd_soc_device *socdev = wm8971_socdev;
763 struct snd_soc_codec *codec = socdev->card->codec;
766 i2c_set_clientdata(i2c, codec);
768 codec->control_data = i2c;
770 ret = wm8971_init(socdev);
772 pr_err("failed to initialise WM8971\n");
777 static int wm8971_i2c_remove(struct i2c_client *client)
779 struct snd_soc_codec *codec = i2c_get_clientdata(client);
780 kfree(codec->reg_cache);
784 static const struct i2c_device_id wm8971_i2c_id[] = {
788 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
790 static struct i2c_driver wm8971_i2c_driver = {
792 .name = "WM8971 I2C Codec",
793 .owner = THIS_MODULE,
795 .probe = wm8971_i2c_probe,
796 .remove = wm8971_i2c_remove,
797 .id_table = wm8971_i2c_id,
800 static int wm8971_add_i2c_device(struct platform_device *pdev,
801 const struct wm8971_setup_data *setup)
803 struct i2c_board_info info;
804 struct i2c_adapter *adapter;
805 struct i2c_client *client;
808 ret = i2c_add_driver(&wm8971_i2c_driver);
810 dev_err(&pdev->dev, "can't add i2c driver\n");
814 memset(&info, 0, sizeof(struct i2c_board_info));
815 info.addr = setup->i2c_address;
816 strlcpy(info.type, "wm8971", I2C_NAME_SIZE);
818 adapter = i2c_get_adapter(setup->i2c_bus);
820 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
825 client = i2c_new_device(adapter, &info);
826 i2c_put_adapter(adapter);
828 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
829 (unsigned int)info.addr);
836 i2c_del_driver(&wm8971_i2c_driver);
842 static int wm8971_probe(struct platform_device *pdev)
844 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
845 struct wm8971_setup_data *setup;
846 struct snd_soc_codec *codec;
847 struct wm8971_priv *wm8971;
850 pr_info("WM8971 Audio Codec %s", WM8971_VERSION);
852 setup = socdev->codec_data;
853 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
857 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
858 if (wm8971 == NULL) {
863 codec->private_data = wm8971;
864 socdev->card->codec = codec;
865 mutex_init(&codec->mutex);
866 INIT_LIST_HEAD(&codec->dapm_widgets);
867 INIT_LIST_HEAD(&codec->dapm_paths);
868 wm8971_socdev = socdev;
870 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
871 wm8971_workq = create_workqueue("wm8971");
872 if (wm8971_workq == NULL) {
873 kfree(codec->private_data);
878 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
879 if (setup->i2c_address) {
880 codec->hw_write = (hw_write_t)i2c_master_send;
881 ret = wm8971_add_i2c_device(pdev, setup);
884 /* Add other interfaces here */
887 destroy_workqueue(wm8971_workq);
888 kfree(codec->private_data);
895 /* power down chip */
896 static int wm8971_remove(struct platform_device *pdev)
898 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
899 struct snd_soc_codec *codec = socdev->card->codec;
901 if (codec->control_data)
902 wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF);
904 destroy_workqueue(wm8971_workq);
905 snd_soc_free_pcms(socdev);
906 snd_soc_dapm_free(socdev);
907 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
908 i2c_unregister_device(codec->control_data);
909 i2c_del_driver(&wm8971_i2c_driver);
911 kfree(codec->private_data);
917 struct snd_soc_codec_device soc_codec_dev_wm8971 = {
918 .probe = wm8971_probe,
919 .remove = wm8971_remove,
920 .suspend = wm8971_suspend,
921 .resume = wm8971_resume,
924 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971);
926 static int __init wm8971_modinit(void)
928 return snd_soc_register_dai(&wm8971_dai);
930 module_init(wm8971_modinit);
932 static void __exit wm8971_exit(void)
934 snd_soc_unregister_dai(&wm8971_dai);
936 module_exit(wm8971_exit);
938 MODULE_DESCRIPTION("ASoC WM8971 driver");
939 MODULE_AUTHOR("Lab126");
940 MODULE_LICENSE("GPL");