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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> | |
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 | ||
8bae3e23 KK |
32 | #define WM8971_VERSION "0.9" |
33 | ||
34 | #define WM8971_REG_COUNT 43 | |
35 | ||
36 | static struct workqueue_struct *wm8971_workq = NULL; | |
37 | ||
38 | /* codec private data */ | |
39 | struct 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 | */ | |
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 */ | |
60 | }; | |
61 | ||
17a52fd6 | 62 | #define wm8971_reset(c) snd_soc_write(c, WM8971_RESET, 0) |
8bae3e23 KK |
63 | |
64 | /* WM8971 Controls */ | |
65 | static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" }; | |
66 | static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz", | |
67 | "200Hz @ 48kHz" }; | |
68 | static const char *wm8971_treble[] = { "8kHz", "4kHz" }; | |
69 | static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" }; | |
70 | static const char *wm8971_ng_type[] = { "Constant PGA Gain", | |
71 | "Mute ADC Output" }; | |
72 | static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; | |
73 | static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)", | |
74 | "Mono (Right)", "Digital Mono"}; | |
75 | static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" }; | |
76 | static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA", | |
77 | "Differential"}; | |
78 | static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA", | |
79 | "Differential"}; | |
80 | static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"}; | |
81 | static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"}; | |
82 | static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert", | |
83 | "L + R Invert"}; | |
84 | ||
85 | static 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 | ||
102 | static 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 */ | |
166 | static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { | |
167 | SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), | |
168 | SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), | |
169 | SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), | |
170 | SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), | |
171 | }; | |
172 | ||
173 | /* Right Mixer */ | |
174 | static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { | |
175 | SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), | |
176 | SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), | |
177 | SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), | |
178 | SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), | |
179 | }; | |
180 | ||
181 | /* Mono Mixer */ | |
182 | static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { | |
183 | SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), | |
184 | SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), | |
185 | SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), | |
186 | SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), | |
187 | }; | |
188 | ||
189 | /* Left Line Mux */ | |
190 | static const struct snd_kcontrol_new wm8971_left_line_controls = | |
191 | SOC_DAPM_ENUM("Route", wm8971_enum[8]); | |
192 | ||
193 | /* Right Line Mux */ | |
194 | static const struct snd_kcontrol_new wm8971_right_line_controls = | |
195 | SOC_DAPM_ENUM("Route", wm8971_enum[9]); | |
196 | ||
197 | /* Left PGA Mux */ | |
198 | static const struct snd_kcontrol_new wm8971_left_pga_controls = | |
199 | SOC_DAPM_ENUM("Route", wm8971_enum[10]); | |
200 | ||
201 | /* Right PGA Mux */ | |
202 | static const struct snd_kcontrol_new wm8971_right_pga_controls = | |
203 | SOC_DAPM_ENUM("Route", wm8971_enum[11]); | |
204 | ||
205 | /* Mono ADC Mux */ | |
206 | static const struct snd_kcontrol_new wm8971_monomux_controls = | |
207 | SOC_DAPM_ENUM("Route", wm8971_enum[13]); | |
208 | ||
209 | static 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 | ||
257 | static 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 | ||
334 | static 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 | ||
341 | snd_soc_dapm_new_widgets(codec); | |
342 | ||
343 | return 0; | |
344 | } | |
345 | ||
346 | struct _coeff_div { | |
347 | u32 mclk; | |
348 | u32 rate; | |
349 | u16 fs; | |
350 | u8 sr:5; | |
351 | u8 usb:1; | |
352 | }; | |
353 | ||
354 | /* codec hifi mclk clock divider coefficients */ | |
355 | static const struct _coeff_div coeff_div[] = { | |
356 | /* 8k */ | |
357 | {12288000, 8000, 1536, 0x6, 0x0}, | |
358 | {11289600, 8000, 1408, 0x16, 0x0}, | |
359 | {18432000, 8000, 2304, 0x7, 0x0}, | |
360 | {16934400, 8000, 2112, 0x17, 0x0}, | |
361 | {12000000, 8000, 1500, 0x6, 0x1}, | |
362 | ||
363 | /* 11.025k */ | |
364 | {11289600, 11025, 1024, 0x18, 0x0}, | |
365 | {16934400, 11025, 1536, 0x19, 0x0}, | |
366 | {12000000, 11025, 1088, 0x19, 0x1}, | |
367 | ||
368 | /* 16k */ | |
369 | {12288000, 16000, 768, 0xa, 0x0}, | |
370 | {18432000, 16000, 1152, 0xb, 0x0}, | |
371 | {12000000, 16000, 750, 0xa, 0x1}, | |
372 | ||
373 | /* 22.05k */ | |
374 | {11289600, 22050, 512, 0x1a, 0x0}, | |
375 | {16934400, 22050, 768, 0x1b, 0x0}, | |
376 | {12000000, 22050, 544, 0x1b, 0x1}, | |
377 | ||
378 | /* 32k */ | |
379 | {12288000, 32000, 384, 0xc, 0x0}, | |
380 | {18432000, 32000, 576, 0xd, 0x0}, | |
381 | {12000000, 32000, 375, 0xa, 0x1}, | |
382 | ||
383 | /* 44.1k */ | |
384 | {11289600, 44100, 256, 0x10, 0x0}, | |
385 | {16934400, 44100, 384, 0x11, 0x0}, | |
386 | {12000000, 44100, 272, 0x11, 0x1}, | |
387 | ||
388 | /* 48k */ | |
389 | {12288000, 48000, 256, 0x0, 0x0}, | |
390 | {18432000, 48000, 384, 0x1, 0x0}, | |
391 | {12000000, 48000, 250, 0x0, 0x1}, | |
392 | ||
393 | /* 88.2k */ | |
394 | {11289600, 88200, 128, 0x1e, 0x0}, | |
395 | {16934400, 88200, 192, 0x1f, 0x0}, | |
396 | {12000000, 88200, 136, 0x1f, 0x1}, | |
397 | ||
398 | /* 96k */ | |
399 | {12288000, 96000, 128, 0xe, 0x0}, | |
400 | {18432000, 96000, 192, 0xf, 0x0}, | |
401 | {12000000, 96000, 125, 0xe, 0x1}, | |
402 | }; | |
403 | ||
404 | static int get_coeff(int mclk, int rate) | |
405 | { | |
406 | int i; | |
407 | ||
408 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
409 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) | |
410 | return i; | |
411 | } | |
412 | return -EINVAL; | |
413 | } | |
414 | ||
415 | static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
416 | int clk_id, unsigned int freq, int dir) | |
417 | { | |
418 | struct snd_soc_codec *codec = codec_dai->codec; | |
419 | struct wm8971_priv *wm8971 = codec->private_data; | |
420 | ||
421 | switch (freq) { | |
422 | case 11289600: | |
423 | case 12000000: | |
424 | case 12288000: | |
425 | case 16934400: | |
426 | case 18432000: | |
427 | wm8971->sysclk = freq; | |
428 | return 0; | |
429 | } | |
430 | return -EINVAL; | |
431 | } | |
432 | ||
433 | static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
434 | unsigned int fmt) | |
435 | { | |
436 | struct snd_soc_codec *codec = codec_dai->codec; | |
437 | u16 iface = 0; | |
438 | ||
439 | /* set master/slave audio interface */ | |
440 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
441 | case SND_SOC_DAIFMT_CBM_CFM: | |
442 | iface = 0x0040; | |
443 | break; | |
444 | case SND_SOC_DAIFMT_CBS_CFS: | |
445 | break; | |
446 | default: | |
447 | return -EINVAL; | |
448 | } | |
449 | ||
450 | /* interface format */ | |
451 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
452 | case SND_SOC_DAIFMT_I2S: | |
453 | iface |= 0x0002; | |
454 | break; | |
455 | case SND_SOC_DAIFMT_RIGHT_J: | |
456 | break; | |
457 | case SND_SOC_DAIFMT_LEFT_J: | |
458 | iface |= 0x0001; | |
459 | break; | |
460 | case SND_SOC_DAIFMT_DSP_A: | |
461 | iface |= 0x0003; | |
462 | break; | |
463 | case SND_SOC_DAIFMT_DSP_B: | |
464 | iface |= 0x0013; | |
465 | break; | |
466 | default: | |
467 | return -EINVAL; | |
468 | } | |
469 | ||
470 | /* clock inversion */ | |
471 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
472 | case SND_SOC_DAIFMT_NB_NF: | |
473 | break; | |
474 | case SND_SOC_DAIFMT_IB_IF: | |
475 | iface |= 0x0090; | |
476 | break; | |
477 | case SND_SOC_DAIFMT_IB_NF: | |
478 | iface |= 0x0080; | |
479 | break; | |
480 | case SND_SOC_DAIFMT_NB_IF: | |
481 | iface |= 0x0010; | |
482 | break; | |
483 | default: | |
484 | return -EINVAL; | |
485 | } | |
486 | ||
17a52fd6 | 487 | snd_soc_write(codec, WM8971_IFACE, iface); |
8bae3e23 KK |
488 | return 0; |
489 | } | |
490 | ||
491 | static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream, | |
dee89c4d MB |
492 | struct snd_pcm_hw_params *params, |
493 | struct snd_soc_dai *dai) | |
8bae3e23 KK |
494 | { |
495 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
496 | struct snd_soc_device *socdev = rtd->socdev; | |
6627a653 | 497 | struct snd_soc_codec *codec = socdev->card->codec; |
8bae3e23 | 498 | struct wm8971_priv *wm8971 = codec->private_data; |
17a52fd6 MB |
499 | u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3; |
500 | u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0; | |
8bae3e23 KK |
501 | int coeff = get_coeff(wm8971->sysclk, params_rate(params)); |
502 | ||
503 | /* bit size */ | |
504 | switch (params_format(params)) { | |
505 | case SNDRV_PCM_FORMAT_S16_LE: | |
506 | break; | |
507 | case SNDRV_PCM_FORMAT_S20_3LE: | |
508 | iface |= 0x0004; | |
509 | break; | |
510 | case SNDRV_PCM_FORMAT_S24_LE: | |
511 | iface |= 0x0008; | |
512 | break; | |
513 | case SNDRV_PCM_FORMAT_S32_LE: | |
514 | iface |= 0x000c; | |
515 | break; | |
516 | } | |
517 | ||
518 | /* set iface & srate */ | |
17a52fd6 | 519 | snd_soc_write(codec, WM8971_IFACE, iface); |
8bae3e23 | 520 | if (coeff >= 0) |
17a52fd6 | 521 | snd_soc_write(codec, WM8971_SRATE, srate | |
8bae3e23 KK |
522 | (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
527 | static int wm8971_mute(struct snd_soc_dai *dai, int mute) | |
528 | { | |
529 | struct snd_soc_codec *codec = dai->codec; | |
17a52fd6 | 530 | u16 mute_reg = snd_soc_read(codec, WM8971_ADCDAC) & 0xfff7; |
8bae3e23 KK |
531 | |
532 | if (mute) | |
17a52fd6 | 533 | snd_soc_write(codec, WM8971_ADCDAC, mute_reg | 0x8); |
8bae3e23 | 534 | else |
17a52fd6 | 535 | snd_soc_write(codec, WM8971_ADCDAC, mute_reg); |
8bae3e23 KK |
536 | return 0; |
537 | } | |
538 | ||
539 | static int wm8971_set_bias_level(struct snd_soc_codec *codec, | |
540 | enum snd_soc_bias_level level) | |
541 | { | |
17a52fd6 | 542 | u16 pwr_reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; |
8bae3e23 KK |
543 | |
544 | switch (level) { | |
545 | case SND_SOC_BIAS_ON: | |
546 | /* set vmid to 50k and unmute dac */ | |
17a52fd6 | 547 | snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); |
8bae3e23 KK |
548 | break; |
549 | case SND_SOC_BIAS_PREPARE: | |
550 | break; | |
551 | case SND_SOC_BIAS_STANDBY: | |
552 | /* mute dac and set vmid to 500k, enable VREF */ | |
17a52fd6 | 553 | snd_soc_write(codec, WM8971_PWR1, pwr_reg | 0x0140); |
8bae3e23 KK |
554 | break; |
555 | case SND_SOC_BIAS_OFF: | |
17a52fd6 | 556 | snd_soc_write(codec, WM8971_PWR1, 0x0001); |
8bae3e23 KK |
557 | break; |
558 | } | |
559 | codec->bias_level = level; | |
560 | return 0; | |
561 | } | |
562 | ||
563 | #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | |
564 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ | |
565 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) | |
566 | ||
567 | #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
568 | SNDRV_PCM_FMTBIT_S24_LE) | |
569 | ||
6335d055 EM |
570 | static struct snd_soc_dai_ops wm8971_dai_ops = { |
571 | .hw_params = wm8971_pcm_hw_params, | |
572 | .digital_mute = wm8971_mute, | |
573 | .set_fmt = wm8971_set_dai_fmt, | |
574 | .set_sysclk = wm8971_set_dai_sysclk, | |
575 | }; | |
576 | ||
8bae3e23 KK |
577 | struct snd_soc_dai wm8971_dai = { |
578 | .name = "WM8971", | |
579 | .playback = { | |
580 | .stream_name = "Playback", | |
581 | .channels_min = 1, | |
582 | .channels_max = 2, | |
583 | .rates = WM8971_RATES, | |
584 | .formats = WM8971_FORMATS,}, | |
585 | .capture = { | |
586 | .stream_name = "Capture", | |
587 | .channels_min = 1, | |
588 | .channels_max = 2, | |
589 | .rates = WM8971_RATES, | |
590 | .formats = WM8971_FORMATS,}, | |
6335d055 | 591 | .ops = &wm8971_dai_ops, |
8bae3e23 KK |
592 | }; |
593 | EXPORT_SYMBOL_GPL(wm8971_dai); | |
594 | ||
595 | static void wm8971_work(struct work_struct *work) | |
596 | { | |
597 | struct snd_soc_codec *codec = | |
598 | container_of(work, struct snd_soc_codec, delayed_work.work); | |
599 | wm8971_set_bias_level(codec, codec->bias_level); | |
600 | } | |
601 | ||
602 | static int wm8971_suspend(struct platform_device *pdev, pm_message_t state) | |
603 | { | |
604 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 605 | struct snd_soc_codec *codec = socdev->card->codec; |
8bae3e23 KK |
606 | |
607 | wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
608 | return 0; | |
609 | } | |
610 | ||
611 | static int wm8971_resume(struct platform_device *pdev) | |
612 | { | |
613 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 614 | struct snd_soc_codec *codec = socdev->card->codec; |
8bae3e23 KK |
615 | int i; |
616 | u8 data[2]; | |
617 | u16 *cache = codec->reg_cache; | |
618 | u16 reg; | |
619 | ||
620 | /* Sync reg_cache with the hardware */ | |
621 | for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) { | |
622 | if (i + 1 == WM8971_RESET) | |
623 | continue; | |
624 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
625 | data[1] = cache[i] & 0x00ff; | |
626 | codec->hw_write(codec->control_data, data, 2); | |
627 | } | |
628 | ||
629 | wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
630 | ||
631 | /* charge wm8971 caps */ | |
632 | if (codec->suspend_bias_level == SND_SOC_BIAS_ON) { | |
17a52fd6 MB |
633 | reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; |
634 | snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); | |
8bae3e23 KK |
635 | codec->bias_level = SND_SOC_BIAS_ON; |
636 | queue_delayed_work(wm8971_workq, &codec->delayed_work, | |
637 | msecs_to_jiffies(1000)); | |
638 | } | |
639 | ||
640 | return 0; | |
641 | } | |
642 | ||
7084a42b MB |
643 | static int wm8971_init(struct snd_soc_device *socdev, |
644 | enum snd_soc_control_type control) | |
8bae3e23 | 645 | { |
6627a653 | 646 | struct snd_soc_codec *codec = socdev->card->codec; |
8bae3e23 KK |
647 | int reg, ret = 0; |
648 | ||
649 | codec->name = "WM8971"; | |
650 | codec->owner = THIS_MODULE; | |
8bae3e23 KK |
651 | codec->set_bias_level = wm8971_set_bias_level; |
652 | codec->dai = &wm8971_dai; | |
653 | codec->reg_cache_size = ARRAY_SIZE(wm8971_reg); | |
654 | codec->num_dai = 1; | |
655 | codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL); | |
656 | ||
657 | if (codec->reg_cache == NULL) | |
658 | return -ENOMEM; | |
659 | ||
7084a42b | 660 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); |
17a52fd6 MB |
661 | if (ret < 0) { |
662 | printk(KERN_ERR "wm8971: failed to set cache I/O: %d\n", ret); | |
663 | goto err; | |
664 | } | |
665 | ||
8bae3e23 KK |
666 | wm8971_reset(codec); |
667 | ||
668 | /* register pcms */ | |
669 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
670 | if (ret < 0) { | |
671 | printk(KERN_ERR "wm8971: failed to create pcms\n"); | |
17a52fd6 | 672 | goto err; |
8bae3e23 KK |
673 | } |
674 | ||
675 | /* charge output caps - set vmid to 5k for quick power up */ | |
17a52fd6 MB |
676 | reg = snd_soc_read(codec, WM8971_PWR1) & 0xfe3e; |
677 | snd_soc_write(codec, WM8971_PWR1, reg | 0x01c0); | |
8bae3e23 KK |
678 | codec->bias_level = SND_SOC_BIAS_STANDBY; |
679 | queue_delayed_work(wm8971_workq, &codec->delayed_work, | |
680 | msecs_to_jiffies(1000)); | |
681 | ||
682 | /* set the update bits */ | |
17a52fd6 MB |
683 | reg = snd_soc_read(codec, WM8971_LDAC); |
684 | snd_soc_write(codec, WM8971_LDAC, reg | 0x0100); | |
685 | reg = snd_soc_read(codec, WM8971_RDAC); | |
686 | snd_soc_write(codec, WM8971_RDAC, reg | 0x0100); | |
687 | ||
688 | reg = snd_soc_read(codec, WM8971_LOUT1V); | |
689 | snd_soc_write(codec, WM8971_LOUT1V, reg | 0x0100); | |
690 | reg = snd_soc_read(codec, WM8971_ROUT1V); | |
691 | snd_soc_write(codec, WM8971_ROUT1V, reg | 0x0100); | |
692 | ||
693 | reg = snd_soc_read(codec, WM8971_LOUT2V); | |
694 | snd_soc_write(codec, WM8971_LOUT2V, reg | 0x0100); | |
695 | reg = snd_soc_read(codec, WM8971_ROUT2V); | |
696 | snd_soc_write(codec, WM8971_ROUT2V, reg | 0x0100); | |
697 | ||
698 | reg = snd_soc_read(codec, WM8971_LINVOL); | |
699 | snd_soc_write(codec, WM8971_LINVOL, reg | 0x0100); | |
700 | reg = snd_soc_read(codec, WM8971_RINVOL); | |
701 | snd_soc_write(codec, WM8971_RINVOL, reg | 0x0100); | |
8bae3e23 | 702 | |
3e8e1952 IM |
703 | snd_soc_add_controls(codec, wm8971_snd_controls, |
704 | ARRAY_SIZE(wm8971_snd_controls)); | |
8bae3e23 | 705 | wm8971_add_widgets(codec); |
968a6025 | 706 | ret = snd_soc_init_card(socdev); |
8bae3e23 KK |
707 | if (ret < 0) { |
708 | printk(KERN_ERR "wm8971: failed to register card\n"); | |
709 | goto card_err; | |
710 | } | |
711 | return ret; | |
712 | ||
713 | card_err: | |
714 | snd_soc_free_pcms(socdev); | |
715 | snd_soc_dapm_free(socdev); | |
17a52fd6 | 716 | err: |
8bae3e23 KK |
717 | kfree(codec->reg_cache); |
718 | return ret; | |
719 | } | |
720 | ||
721 | /* If the i2c layer weren't so broken, we could pass this kind of data | |
722 | around */ | |
723 | static struct snd_soc_device *wm8971_socdev; | |
724 | ||
725 | #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) | |
726 | ||
727 | static int wm8971_i2c_probe(struct i2c_client *i2c, | |
728 | const struct i2c_device_id *id) | |
729 | { | |
730 | struct snd_soc_device *socdev = wm8971_socdev; | |
6627a653 | 731 | struct snd_soc_codec *codec = socdev->card->codec; |
8bae3e23 KK |
732 | int ret; |
733 | ||
734 | i2c_set_clientdata(i2c, codec); | |
735 | ||
736 | codec->control_data = i2c; | |
737 | ||
7084a42b | 738 | ret = wm8971_init(socdev, SND_SOC_I2C); |
8bae3e23 KK |
739 | if (ret < 0) |
740 | pr_err("failed to initialise WM8971\n"); | |
741 | ||
742 | return ret; | |
743 | } | |
744 | ||
745 | static int wm8971_i2c_remove(struct i2c_client *client) | |
746 | { | |
747 | struct snd_soc_codec *codec = i2c_get_clientdata(client); | |
748 | kfree(codec->reg_cache); | |
749 | return 0; | |
750 | } | |
751 | ||
752 | static const struct i2c_device_id wm8971_i2c_id[] = { | |
753 | { "wm8971", 0 }, | |
754 | { } | |
755 | }; | |
756 | MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); | |
757 | ||
758 | static struct i2c_driver wm8971_i2c_driver = { | |
759 | .driver = { | |
760 | .name = "WM8971 I2C Codec", | |
761 | .owner = THIS_MODULE, | |
762 | }, | |
763 | .probe = wm8971_i2c_probe, | |
764 | .remove = wm8971_i2c_remove, | |
765 | .id_table = wm8971_i2c_id, | |
766 | }; | |
767 | ||
768 | static int wm8971_add_i2c_device(struct platform_device *pdev, | |
769 | const struct wm8971_setup_data *setup) | |
770 | { | |
771 | struct i2c_board_info info; | |
772 | struct i2c_adapter *adapter; | |
773 | struct i2c_client *client; | |
774 | int ret; | |
775 | ||
776 | ret = i2c_add_driver(&wm8971_i2c_driver); | |
777 | if (ret != 0) { | |
778 | dev_err(&pdev->dev, "can't add i2c driver\n"); | |
779 | return ret; | |
780 | } | |
781 | ||
782 | memset(&info, 0, sizeof(struct i2c_board_info)); | |
783 | info.addr = setup->i2c_address; | |
784 | strlcpy(info.type, "wm8971", I2C_NAME_SIZE); | |
785 | ||
786 | adapter = i2c_get_adapter(setup->i2c_bus); | |
787 | if (!adapter) { | |
788 | dev_err(&pdev->dev, "can't get i2c adapter %d\n", | |
789 | setup->i2c_bus); | |
790 | goto err_driver; | |
791 | } | |
792 | ||
793 | client = i2c_new_device(adapter, &info); | |
794 | i2c_put_adapter(adapter); | |
795 | if (!client) { | |
796 | dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", | |
797 | (unsigned int)info.addr); | |
798 | goto err_driver; | |
799 | } | |
800 | ||
801 | return 0; | |
802 | ||
803 | err_driver: | |
804 | i2c_del_driver(&wm8971_i2c_driver); | |
805 | return -ENODEV; | |
806 | } | |
807 | ||
808 | #endif | |
809 | ||
810 | static int wm8971_probe(struct platform_device *pdev) | |
811 | { | |
812 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
813 | struct wm8971_setup_data *setup; | |
814 | struct snd_soc_codec *codec; | |
815 | struct wm8971_priv *wm8971; | |
816 | int ret = 0; | |
817 | ||
818 | pr_info("WM8971 Audio Codec %s", WM8971_VERSION); | |
819 | ||
820 | setup = socdev->codec_data; | |
821 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); | |
822 | if (codec == NULL) | |
823 | return -ENOMEM; | |
824 | ||
825 | wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL); | |
826 | if (wm8971 == NULL) { | |
827 | kfree(codec); | |
828 | return -ENOMEM; | |
829 | } | |
830 | ||
831 | codec->private_data = wm8971; | |
6627a653 | 832 | socdev->card->codec = codec; |
8bae3e23 KK |
833 | mutex_init(&codec->mutex); |
834 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
835 | INIT_LIST_HEAD(&codec->dapm_paths); | |
836 | wm8971_socdev = socdev; | |
837 | ||
838 | INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work); | |
839 | wm8971_workq = create_workqueue("wm8971"); | |
840 | if (wm8971_workq == NULL) { | |
841 | kfree(codec->private_data); | |
842 | kfree(codec); | |
843 | return -ENOMEM; | |
844 | } | |
845 | ||
846 | #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) | |
847 | if (setup->i2c_address) { | |
8bae3e23 KK |
848 | ret = wm8971_add_i2c_device(pdev, setup); |
849 | } | |
850 | #endif | |
851 | /* Add other interfaces here */ | |
852 | ||
853 | if (ret != 0) { | |
854 | destroy_workqueue(wm8971_workq); | |
855 | kfree(codec->private_data); | |
856 | kfree(codec); | |
857 | } | |
858 | ||
859 | return ret; | |
860 | } | |
861 | ||
862 | /* power down chip */ | |
863 | static int wm8971_remove(struct platform_device *pdev) | |
864 | { | |
865 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 866 | struct snd_soc_codec *codec = socdev->card->codec; |
8bae3e23 KK |
867 | |
868 | if (codec->control_data) | |
869 | wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
870 | if (wm8971_workq) | |
871 | destroy_workqueue(wm8971_workq); | |
872 | snd_soc_free_pcms(socdev); | |
873 | snd_soc_dapm_free(socdev); | |
874 | #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) | |
875 | i2c_unregister_device(codec->control_data); | |
876 | i2c_del_driver(&wm8971_i2c_driver); | |
877 | #endif | |
878 | kfree(codec->private_data); | |
879 | kfree(codec); | |
880 | ||
881 | return 0; | |
882 | } | |
883 | ||
884 | struct snd_soc_codec_device soc_codec_dev_wm8971 = { | |
885 | .probe = wm8971_probe, | |
886 | .remove = wm8971_remove, | |
887 | .suspend = wm8971_suspend, | |
888 | .resume = wm8971_resume, | |
889 | }; | |
890 | ||
891 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971); | |
892 | ||
c9b3a40f | 893 | static int __init wm8971_modinit(void) |
64089b84 MB |
894 | { |
895 | return snd_soc_register_dai(&wm8971_dai); | |
896 | } | |
897 | module_init(wm8971_modinit); | |
898 | ||
899 | static void __exit wm8971_exit(void) | |
900 | { | |
901 | snd_soc_unregister_dai(&wm8971_dai); | |
902 | } | |
903 | module_exit(wm8971_exit); | |
904 | ||
8bae3e23 KK |
905 | MODULE_DESCRIPTION("ASoC WM8971 driver"); |
906 | MODULE_AUTHOR("Lab126"); | |
907 | MODULE_LICENSE("GPL"); |