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f2644a2c MB |
1 | /* |
2 | * wm8960.c -- WM8960 ALSA SoC Audio driver | |
3 | * | |
4 | * Author: Liam Girdwood | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/module.h> | |
12 | #include <linux/moduleparam.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/delay.h> | |
15 | #include <linux/pm.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <sound/core.h> | |
19 | #include <sound/pcm.h> | |
20 | #include <sound/pcm_params.h> | |
21 | #include <sound/soc.h> | |
22 | #include <sound/soc-dapm.h> | |
23 | #include <sound/initval.h> | |
24 | #include <sound/tlv.h> | |
b6877a47 | 25 | #include <sound/wm8960.h> |
f2644a2c MB |
26 | |
27 | #include "wm8960.h" | |
28 | ||
29 | #define AUDIO_NAME "wm8960" | |
30 | ||
31 | struct snd_soc_codec_device soc_codec_dev_wm8960; | |
32 | ||
33 | /* R25 - Power 1 */ | |
34 | #define WM8960_VREF 0x40 | |
35 | ||
36 | /* R28 - Anti-pop 1 */ | |
37 | #define WM8960_POBCTRL 0x80 | |
38 | #define WM8960_BUFDCOPEN 0x10 | |
39 | #define WM8960_BUFIOEN 0x08 | |
40 | #define WM8960_SOFT_ST 0x04 | |
41 | #define WM8960_HPSTBY 0x01 | |
42 | ||
43 | /* R29 - Anti-pop 2 */ | |
44 | #define WM8960_DISOP 0x40 | |
45 | ||
46 | /* | |
47 | * wm8960 register cache | |
48 | * We can't read the WM8960 register space when we are | |
49 | * using 2 wire for device control, so we cache them instead. | |
50 | */ | |
51 | static const u16 wm8960_reg[WM8960_CACHEREGNUM] = { | |
52 | 0x0097, 0x0097, 0x0000, 0x0000, | |
53 | 0x0000, 0x0008, 0x0000, 0x000a, | |
54 | 0x01c0, 0x0000, 0x00ff, 0x00ff, | |
55 | 0x0000, 0x0000, 0x0000, 0x0000, | |
56 | 0x0000, 0x007b, 0x0100, 0x0032, | |
57 | 0x0000, 0x00c3, 0x00c3, 0x01c0, | |
58 | 0x0000, 0x0000, 0x0000, 0x0000, | |
59 | 0x0000, 0x0000, 0x0000, 0x0000, | |
60 | 0x0100, 0x0100, 0x0050, 0x0050, | |
61 | 0x0050, 0x0050, 0x0000, 0x0000, | |
62 | 0x0000, 0x0000, 0x0040, 0x0000, | |
63 | 0x0000, 0x0050, 0x0050, 0x0000, | |
64 | 0x0002, 0x0037, 0x004d, 0x0080, | |
65 | 0x0008, 0x0031, 0x0026, 0x00e9, | |
66 | }; | |
67 | ||
68 | struct wm8960_priv { | |
69 | u16 reg_cache[WM8960_CACHEREGNUM]; | |
70 | struct snd_soc_codec codec; | |
71 | }; | |
72 | ||
17a52fd6 | 73 | #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0) |
f2644a2c MB |
74 | |
75 | /* enumerated controls */ | |
76 | static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; | |
77 | static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted", | |
78 | "Right Inverted", "Stereo Inversion"}; | |
79 | static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"}; | |
80 | static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"}; | |
81 | static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"}; | |
82 | static const char *wm8960_alcmode[] = {"ALC", "Limiter"}; | |
83 | ||
84 | static const struct soc_enum wm8960_enum[] = { | |
85 | SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph), | |
86 | SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity), | |
87 | SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity), | |
88 | SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff), | |
89 | SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff), | |
90 | SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc), | |
91 | SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode), | |
92 | }; | |
93 | ||
94 | static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0); | |
95 | static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1); | |
96 | static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0); | |
97 | static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); | |
98 | ||
99 | static const struct snd_kcontrol_new wm8960_snd_controls[] = { | |
100 | SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL, | |
101 | 0, 63, 0, adc_tlv), | |
102 | SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL, | |
103 | 6, 1, 0), | |
104 | SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL, | |
105 | 7, 1, 0), | |
106 | ||
107 | SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC, | |
108 | 0, 255, 0, dac_tlv), | |
109 | ||
110 | SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1, | |
111 | 0, 127, 0, out_tlv), | |
112 | SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1, | |
113 | 7, 1, 0), | |
114 | ||
115 | SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2, | |
116 | 0, 127, 0, out_tlv), | |
117 | SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2, | |
118 | 7, 1, 0), | |
119 | SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0), | |
120 | SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0), | |
121 | ||
122 | SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0), | |
123 | SOC_ENUM("ADC Polarity", wm8960_enum[1]), | |
124 | SOC_ENUM("Playback De-emphasis", wm8960_enum[0]), | |
125 | SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0), | |
126 | ||
127 | SOC_ENUM("DAC Polarity", wm8960_enum[2]), | |
128 | ||
129 | SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]), | |
130 | SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]), | |
131 | SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), | |
132 | SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0), | |
133 | ||
134 | SOC_ENUM("ALC Function", wm8960_enum[5]), | |
135 | SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0), | |
136 | SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1), | |
137 | SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0), | |
138 | SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0), | |
139 | SOC_ENUM("ALC Mode", wm8960_enum[6]), | |
140 | SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0), | |
141 | SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0), | |
142 | ||
143 | SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0), | |
144 | SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0), | |
145 | ||
146 | SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH, | |
147 | 0, 127, 0), | |
148 | ||
149 | SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume", | |
150 | WM8960_BYPASS1, 4, 7, 1, bypass_tlv), | |
151 | SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume", | |
152 | WM8960_LOUTMIX, 4, 7, 1, bypass_tlv), | |
153 | SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume", | |
154 | WM8960_BYPASS2, 4, 7, 1, bypass_tlv), | |
155 | SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume", | |
156 | WM8960_ROUTMIX, 4, 7, 1, bypass_tlv), | |
157 | }; | |
158 | ||
159 | static const struct snd_kcontrol_new wm8960_lin_boost[] = { | |
160 | SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0), | |
161 | SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0), | |
162 | SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0), | |
163 | }; | |
164 | ||
165 | static const struct snd_kcontrol_new wm8960_lin[] = { | |
166 | SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0), | |
167 | }; | |
168 | ||
169 | static const struct snd_kcontrol_new wm8960_rin_boost[] = { | |
170 | SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0), | |
171 | SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0), | |
172 | SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0), | |
173 | }; | |
174 | ||
175 | static const struct snd_kcontrol_new wm8960_rin[] = { | |
176 | SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0), | |
177 | }; | |
178 | ||
179 | static const struct snd_kcontrol_new wm8960_loutput_mixer[] = { | |
180 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0), | |
181 | SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0), | |
182 | SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0), | |
183 | }; | |
184 | ||
185 | static const struct snd_kcontrol_new wm8960_routput_mixer[] = { | |
186 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0), | |
187 | SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0), | |
188 | SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0), | |
189 | }; | |
190 | ||
191 | static const struct snd_kcontrol_new wm8960_mono_out[] = { | |
192 | SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0), | |
193 | SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0), | |
194 | }; | |
195 | ||
196 | static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = { | |
197 | SND_SOC_DAPM_INPUT("LINPUT1"), | |
198 | SND_SOC_DAPM_INPUT("RINPUT1"), | |
199 | SND_SOC_DAPM_INPUT("LINPUT2"), | |
200 | SND_SOC_DAPM_INPUT("RINPUT2"), | |
201 | SND_SOC_DAPM_INPUT("LINPUT3"), | |
202 | SND_SOC_DAPM_INPUT("RINPUT3"), | |
203 | ||
204 | SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0), | |
205 | ||
206 | SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0, | |
207 | wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)), | |
208 | SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0, | |
209 | wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)), | |
210 | ||
211 | SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, | |
212 | wm8960_lin, ARRAY_SIZE(wm8960_lin)), | |
213 | SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, | |
214 | wm8960_rin, ARRAY_SIZE(wm8960_rin)), | |
215 | ||
216 | SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0), | |
217 | SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0), | |
218 | ||
219 | SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), | |
220 | SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), | |
221 | ||
222 | SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0, | |
223 | &wm8960_loutput_mixer[0], | |
224 | ARRAY_SIZE(wm8960_loutput_mixer)), | |
225 | SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0, | |
226 | &wm8960_routput_mixer[0], | |
227 | ARRAY_SIZE(wm8960_routput_mixer)), | |
228 | ||
229 | SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0, | |
230 | &wm8960_mono_out[0], | |
231 | ARRAY_SIZE(wm8960_mono_out)), | |
232 | ||
233 | SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0), | |
234 | SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0), | |
235 | ||
236 | SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0), | |
237 | SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0), | |
238 | ||
239 | SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0), | |
240 | SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0), | |
241 | ||
242 | SND_SOC_DAPM_OUTPUT("SPK_LP"), | |
243 | SND_SOC_DAPM_OUTPUT("SPK_LN"), | |
244 | SND_SOC_DAPM_OUTPUT("HP_L"), | |
245 | SND_SOC_DAPM_OUTPUT("HP_R"), | |
246 | SND_SOC_DAPM_OUTPUT("SPK_RP"), | |
247 | SND_SOC_DAPM_OUTPUT("SPK_RN"), | |
248 | SND_SOC_DAPM_OUTPUT("OUT3"), | |
249 | }; | |
250 | ||
251 | static const struct snd_soc_dapm_route audio_paths[] = { | |
252 | { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" }, | |
253 | { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" }, | |
254 | { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" }, | |
255 | ||
256 | { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", }, | |
257 | { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */ | |
258 | { "Left Input Mixer", NULL, "LINPUT2" }, | |
259 | { "Left Input Mixer", NULL, "LINPUT3" }, | |
260 | ||
261 | { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" }, | |
262 | { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" }, | |
263 | { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" }, | |
264 | ||
265 | { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", }, | |
266 | { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */ | |
267 | { "Right Input Mixer", NULL, "RINPUT2" }, | |
268 | { "Right Input Mixer", NULL, "LINPUT3" }, | |
269 | ||
270 | { "Left ADC", NULL, "Left Input Mixer" }, | |
271 | { "Right ADC", NULL, "Right Input Mixer" }, | |
272 | ||
273 | { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" }, | |
274 | { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} , | |
275 | { "Left Output Mixer", "PCM Playback Switch", "Left DAC" }, | |
276 | ||
277 | { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" }, | |
278 | { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } , | |
279 | { "Right Output Mixer", "PCM Playback Switch", "Right DAC" }, | |
280 | ||
281 | { "Mono Output Mixer", "Left Switch", "Left Output Mixer" }, | |
282 | { "Mono Output Mixer", "Right Switch", "Right Output Mixer" }, | |
283 | ||
284 | { "LOUT1 PGA", NULL, "Left Output Mixer" }, | |
285 | { "ROUT1 PGA", NULL, "Right Output Mixer" }, | |
286 | ||
287 | { "HP_L", NULL, "LOUT1 PGA" }, | |
288 | { "HP_R", NULL, "ROUT1 PGA" }, | |
289 | ||
290 | { "Left Speaker PGA", NULL, "Left Output Mixer" }, | |
291 | { "Right Speaker PGA", NULL, "Right Output Mixer" }, | |
292 | ||
293 | { "Left Speaker Output", NULL, "Left Speaker PGA" }, | |
294 | { "Right Speaker Output", NULL, "Right Speaker PGA" }, | |
295 | ||
296 | { "SPK_LN", NULL, "Left Speaker Output" }, | |
297 | { "SPK_LP", NULL, "Left Speaker Output" }, | |
298 | { "SPK_RN", NULL, "Right Speaker Output" }, | |
299 | { "SPK_RP", NULL, "Right Speaker Output" }, | |
300 | ||
301 | { "OUT3", NULL, "Mono Output Mixer", } | |
302 | }; | |
303 | ||
304 | static int wm8960_add_widgets(struct snd_soc_codec *codec) | |
305 | { | |
306 | snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets, | |
307 | ARRAY_SIZE(wm8960_dapm_widgets)); | |
308 | ||
309 | snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); | |
310 | ||
f2644a2c MB |
311 | return 0; |
312 | } | |
313 | ||
314 | static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
315 | unsigned int fmt) | |
316 | { | |
317 | struct snd_soc_codec *codec = codec_dai->codec; | |
318 | u16 iface = 0; | |
319 | ||
320 | /* set master/slave audio interface */ | |
321 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
322 | case SND_SOC_DAIFMT_CBM_CFM: | |
323 | iface |= 0x0040; | |
324 | break; | |
325 | case SND_SOC_DAIFMT_CBS_CFS: | |
326 | break; | |
327 | default: | |
328 | return -EINVAL; | |
329 | } | |
330 | ||
331 | /* interface format */ | |
332 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
333 | case SND_SOC_DAIFMT_I2S: | |
334 | iface |= 0x0002; | |
335 | break; | |
336 | case SND_SOC_DAIFMT_RIGHT_J: | |
337 | break; | |
338 | case SND_SOC_DAIFMT_LEFT_J: | |
339 | iface |= 0x0001; | |
340 | break; | |
341 | case SND_SOC_DAIFMT_DSP_A: | |
342 | iface |= 0x0003; | |
343 | break; | |
344 | case SND_SOC_DAIFMT_DSP_B: | |
345 | iface |= 0x0013; | |
346 | break; | |
347 | default: | |
348 | return -EINVAL; | |
349 | } | |
350 | ||
351 | /* clock inversion */ | |
352 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
353 | case SND_SOC_DAIFMT_NB_NF: | |
354 | break; | |
355 | case SND_SOC_DAIFMT_IB_IF: | |
356 | iface |= 0x0090; | |
357 | break; | |
358 | case SND_SOC_DAIFMT_IB_NF: | |
359 | iface |= 0x0080; | |
360 | break; | |
361 | case SND_SOC_DAIFMT_NB_IF: | |
362 | iface |= 0x0010; | |
363 | break; | |
364 | default: | |
365 | return -EINVAL; | |
366 | } | |
367 | ||
368 | /* set iface */ | |
17a52fd6 | 369 | snd_soc_write(codec, WM8960_IFACE1, iface); |
f2644a2c MB |
370 | return 0; |
371 | } | |
372 | ||
373 | static int wm8960_hw_params(struct snd_pcm_substream *substream, | |
374 | struct snd_pcm_hw_params *params, | |
375 | struct snd_soc_dai *dai) | |
376 | { | |
377 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
378 | struct snd_soc_device *socdev = rtd->socdev; | |
379 | struct snd_soc_codec *codec = socdev->card->codec; | |
17a52fd6 | 380 | u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3; |
f2644a2c MB |
381 | |
382 | /* bit size */ | |
383 | switch (params_format(params)) { | |
384 | case SNDRV_PCM_FORMAT_S16_LE: | |
385 | break; | |
386 | case SNDRV_PCM_FORMAT_S20_3LE: | |
387 | iface |= 0x0004; | |
388 | break; | |
389 | case SNDRV_PCM_FORMAT_S24_LE: | |
390 | iface |= 0x0008; | |
391 | break; | |
392 | } | |
393 | ||
394 | /* set iface */ | |
17a52fd6 | 395 | snd_soc_write(codec, WM8960_IFACE1, iface); |
f2644a2c MB |
396 | return 0; |
397 | } | |
398 | ||
399 | static int wm8960_mute(struct snd_soc_dai *dai, int mute) | |
400 | { | |
401 | struct snd_soc_codec *codec = dai->codec; | |
17a52fd6 | 402 | u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7; |
f2644a2c MB |
403 | |
404 | if (mute) | |
17a52fd6 | 405 | snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8); |
f2644a2c | 406 | else |
17a52fd6 | 407 | snd_soc_write(codec, WM8960_DACCTL1, mute_reg); |
f2644a2c MB |
408 | return 0; |
409 | } | |
410 | ||
411 | static int wm8960_set_bias_level(struct snd_soc_codec *codec, | |
412 | enum snd_soc_bias_level level) | |
413 | { | |
414 | struct wm8960_data *pdata = codec->dev->platform_data; | |
415 | u16 reg; | |
416 | ||
417 | switch (level) { | |
418 | case SND_SOC_BIAS_ON: | |
419 | break; | |
420 | ||
421 | case SND_SOC_BIAS_PREPARE: | |
422 | /* Set VMID to 2x50k */ | |
17a52fd6 | 423 | reg = snd_soc_read(codec, WM8960_POWER1); |
f2644a2c MB |
424 | reg &= ~0x180; |
425 | reg |= 0x80; | |
17a52fd6 | 426 | snd_soc_write(codec, WM8960_POWER1, reg); |
f2644a2c MB |
427 | break; |
428 | ||
429 | case SND_SOC_BIAS_STANDBY: | |
430 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
431 | /* Enable anti-pop features */ | |
17a52fd6 | 432 | snd_soc_write(codec, WM8960_APOP1, |
f2644a2c MB |
433 | WM8960_POBCTRL | WM8960_SOFT_ST | |
434 | WM8960_BUFDCOPEN | WM8960_BUFIOEN); | |
435 | ||
436 | /* Discharge HP output */ | |
437 | reg = WM8960_DISOP; | |
438 | if (pdata) | |
439 | reg |= pdata->dres << 4; | |
17a52fd6 | 440 | snd_soc_write(codec, WM8960_APOP2, reg); |
f2644a2c MB |
441 | |
442 | msleep(400); | |
443 | ||
17a52fd6 | 444 | snd_soc_write(codec, WM8960_APOP2, 0); |
f2644a2c MB |
445 | |
446 | /* Enable & ramp VMID at 2x50k */ | |
17a52fd6 | 447 | reg = snd_soc_read(codec, WM8960_POWER1); |
f2644a2c | 448 | reg |= 0x80; |
17a52fd6 | 449 | snd_soc_write(codec, WM8960_POWER1, reg); |
f2644a2c MB |
450 | msleep(100); |
451 | ||
452 | /* Enable VREF */ | |
17a52fd6 | 453 | snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF); |
f2644a2c MB |
454 | |
455 | /* Disable anti-pop features */ | |
17a52fd6 | 456 | snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN); |
f2644a2c MB |
457 | } |
458 | ||
459 | /* Set VMID to 2x250k */ | |
17a52fd6 | 460 | reg = snd_soc_read(codec, WM8960_POWER1); |
f2644a2c MB |
461 | reg &= ~0x180; |
462 | reg |= 0x100; | |
17a52fd6 | 463 | snd_soc_write(codec, WM8960_POWER1, reg); |
f2644a2c MB |
464 | break; |
465 | ||
466 | case SND_SOC_BIAS_OFF: | |
467 | /* Enable anti-pop features */ | |
17a52fd6 | 468 | snd_soc_write(codec, WM8960_APOP1, |
f2644a2c MB |
469 | WM8960_POBCTRL | WM8960_SOFT_ST | |
470 | WM8960_BUFDCOPEN | WM8960_BUFIOEN); | |
471 | ||
472 | /* Disable VMID and VREF, let them discharge */ | |
17a52fd6 | 473 | snd_soc_write(codec, WM8960_POWER1, 0); |
f2644a2c MB |
474 | msleep(600); |
475 | ||
17a52fd6 | 476 | snd_soc_write(codec, WM8960_APOP1, 0); |
f2644a2c MB |
477 | break; |
478 | } | |
479 | ||
480 | codec->bias_level = level; | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
485 | /* PLL divisors */ | |
486 | struct _pll_div { | |
487 | u32 pre_div:1; | |
488 | u32 n:4; | |
489 | u32 k:24; | |
490 | }; | |
491 | ||
492 | /* The size in bits of the pll divide multiplied by 10 | |
493 | * to allow rounding later */ | |
494 | #define FIXED_PLL_SIZE ((1 << 24) * 10) | |
495 | ||
496 | static int pll_factors(unsigned int source, unsigned int target, | |
497 | struct _pll_div *pll_div) | |
498 | { | |
499 | unsigned long long Kpart; | |
500 | unsigned int K, Ndiv, Nmod; | |
501 | ||
502 | pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target); | |
503 | ||
504 | /* Scale up target to PLL operating frequency */ | |
505 | target *= 4; | |
506 | ||
507 | Ndiv = target / source; | |
508 | if (Ndiv < 6) { | |
509 | source >>= 1; | |
510 | pll_div->pre_div = 1; | |
511 | Ndiv = target / source; | |
512 | } else | |
513 | pll_div->pre_div = 0; | |
514 | ||
515 | if ((Ndiv < 6) || (Ndiv > 12)) { | |
516 | pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv); | |
517 | return -EINVAL; | |
518 | } | |
519 | ||
520 | pll_div->n = Ndiv; | |
521 | Nmod = target % source; | |
522 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; | |
523 | ||
524 | do_div(Kpart, source); | |
525 | ||
526 | K = Kpart & 0xFFFFFFFF; | |
527 | ||
528 | /* Check if we need to round */ | |
529 | if ((K % 10) >= 5) | |
530 | K += 5; | |
531 | ||
532 | /* Move down to proper range now rounding is done */ | |
533 | K /= 10; | |
534 | ||
535 | pll_div->k = K; | |
536 | ||
537 | pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n", | |
538 | pll_div->n, pll_div->k, pll_div->pre_div); | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
85488037 MB |
543 | static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, |
544 | int source, unsigned int freq_in, unsigned int freq_out) | |
f2644a2c MB |
545 | { |
546 | struct snd_soc_codec *codec = codec_dai->codec; | |
547 | u16 reg; | |
548 | static struct _pll_div pll_div; | |
549 | int ret; | |
550 | ||
551 | if (freq_in && freq_out) { | |
552 | ret = pll_factors(freq_in, freq_out, &pll_div); | |
553 | if (ret != 0) | |
554 | return ret; | |
555 | } | |
556 | ||
557 | /* Disable the PLL: even if we are changing the frequency the | |
558 | * PLL needs to be disabled while we do so. */ | |
17a52fd6 MB |
559 | snd_soc_write(codec, WM8960_CLOCK1, |
560 | snd_soc_read(codec, WM8960_CLOCK1) & ~1); | |
561 | snd_soc_write(codec, WM8960_POWER2, | |
562 | snd_soc_read(codec, WM8960_POWER2) & ~1); | |
f2644a2c MB |
563 | |
564 | if (!freq_in || !freq_out) | |
565 | return 0; | |
566 | ||
17a52fd6 | 567 | reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f; |
f2644a2c MB |
568 | reg |= pll_div.pre_div << 4; |
569 | reg |= pll_div.n; | |
570 | ||
571 | if (pll_div.k) { | |
572 | reg |= 0x20; | |
573 | ||
17a52fd6 MB |
574 | snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f); |
575 | snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff); | |
576 | snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff); | |
f2644a2c | 577 | } |
17a52fd6 | 578 | snd_soc_write(codec, WM8960_PLL1, reg); |
f2644a2c MB |
579 | |
580 | /* Turn it on */ | |
17a52fd6 MB |
581 | snd_soc_write(codec, WM8960_POWER2, |
582 | snd_soc_read(codec, WM8960_POWER2) | 1); | |
f2644a2c | 583 | msleep(250); |
17a52fd6 MB |
584 | snd_soc_write(codec, WM8960_CLOCK1, |
585 | snd_soc_read(codec, WM8960_CLOCK1) | 1); | |
f2644a2c MB |
586 | |
587 | return 0; | |
588 | } | |
589 | ||
590 | static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
591 | int div_id, int div) | |
592 | { | |
593 | struct snd_soc_codec *codec = codec_dai->codec; | |
594 | u16 reg; | |
595 | ||
596 | switch (div_id) { | |
597 | case WM8960_SYSCLKSEL: | |
17a52fd6 MB |
598 | reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1fe; |
599 | snd_soc_write(codec, WM8960_CLOCK1, reg | div); | |
f2644a2c MB |
600 | break; |
601 | case WM8960_SYSCLKDIV: | |
17a52fd6 MB |
602 | reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9; |
603 | snd_soc_write(codec, WM8960_CLOCK1, reg | div); | |
f2644a2c MB |
604 | break; |
605 | case WM8960_DACDIV: | |
17a52fd6 MB |
606 | reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7; |
607 | snd_soc_write(codec, WM8960_CLOCK1, reg | div); | |
f2644a2c MB |
608 | break; |
609 | case WM8960_OPCLKDIV: | |
17a52fd6 MB |
610 | reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f; |
611 | snd_soc_write(codec, WM8960_PLL1, reg | div); | |
f2644a2c MB |
612 | break; |
613 | case WM8960_DCLKDIV: | |
17a52fd6 MB |
614 | reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f; |
615 | snd_soc_write(codec, WM8960_CLOCK2, reg | div); | |
f2644a2c MB |
616 | break; |
617 | case WM8960_TOCLKSEL: | |
17a52fd6 MB |
618 | reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd; |
619 | snd_soc_write(codec, WM8960_ADDCTL1, reg | div); | |
f2644a2c MB |
620 | break; |
621 | default: | |
622 | return -EINVAL; | |
623 | } | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | #define WM8960_RATES SNDRV_PCM_RATE_8000_48000 | |
629 | ||
630 | #define WM8960_FORMATS \ | |
631 | (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ | |
632 | SNDRV_PCM_FMTBIT_S24_LE) | |
633 | ||
634 | static struct snd_soc_dai_ops wm8960_dai_ops = { | |
635 | .hw_params = wm8960_hw_params, | |
636 | .digital_mute = wm8960_mute, | |
637 | .set_fmt = wm8960_set_dai_fmt, | |
638 | .set_clkdiv = wm8960_set_dai_clkdiv, | |
639 | .set_pll = wm8960_set_dai_pll, | |
640 | }; | |
641 | ||
642 | struct snd_soc_dai wm8960_dai = { | |
643 | .name = "WM8960", | |
644 | .playback = { | |
645 | .stream_name = "Playback", | |
646 | .channels_min = 1, | |
647 | .channels_max = 2, | |
648 | .rates = WM8960_RATES, | |
649 | .formats = WM8960_FORMATS,}, | |
650 | .capture = { | |
651 | .stream_name = "Capture", | |
652 | .channels_min = 1, | |
653 | .channels_max = 2, | |
654 | .rates = WM8960_RATES, | |
655 | .formats = WM8960_FORMATS,}, | |
656 | .ops = &wm8960_dai_ops, | |
657 | .symmetric_rates = 1, | |
658 | }; | |
659 | EXPORT_SYMBOL_GPL(wm8960_dai); | |
660 | ||
661 | static int wm8960_suspend(struct platform_device *pdev, pm_message_t state) | |
662 | { | |
663 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
664 | struct snd_soc_codec *codec = socdev->card->codec; | |
665 | ||
666 | wm8960_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
667 | return 0; | |
668 | } | |
669 | ||
670 | static int wm8960_resume(struct platform_device *pdev) | |
671 | { | |
672 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
673 | struct snd_soc_codec *codec = socdev->card->codec; | |
674 | int i; | |
675 | u8 data[2]; | |
676 | u16 *cache = codec->reg_cache; | |
677 | ||
678 | /* Sync reg_cache with the hardware */ | |
679 | for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) { | |
680 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
681 | data[1] = cache[i] & 0x00ff; | |
682 | codec->hw_write(codec->control_data, data, 2); | |
683 | } | |
684 | ||
685 | wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
686 | wm8960_set_bias_level(codec, codec->suspend_bias_level); | |
687 | return 0; | |
688 | } | |
689 | ||
690 | static struct snd_soc_codec *wm8960_codec; | |
691 | ||
692 | static int wm8960_probe(struct platform_device *pdev) | |
693 | { | |
694 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
695 | struct snd_soc_codec *codec; | |
696 | int ret = 0; | |
697 | ||
698 | if (wm8960_codec == NULL) { | |
699 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
700 | return -ENODEV; | |
701 | } | |
702 | ||
703 | socdev->card->codec = wm8960_codec; | |
704 | codec = wm8960_codec; | |
705 | ||
706 | /* register pcms */ | |
707 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
708 | if (ret < 0) { | |
709 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); | |
710 | goto pcm_err; | |
711 | } | |
712 | ||
713 | snd_soc_add_controls(codec, wm8960_snd_controls, | |
714 | ARRAY_SIZE(wm8960_snd_controls)); | |
715 | wm8960_add_widgets(codec); | |
f2644a2c MB |
716 | |
717 | return ret; | |
718 | ||
f2644a2c MB |
719 | pcm_err: |
720 | return ret; | |
721 | } | |
722 | ||
723 | /* power down chip */ | |
724 | static int wm8960_remove(struct platform_device *pdev) | |
725 | { | |
726 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
727 | ||
728 | snd_soc_free_pcms(socdev); | |
729 | snd_soc_dapm_free(socdev); | |
730 | ||
731 | return 0; | |
732 | } | |
733 | ||
734 | struct snd_soc_codec_device soc_codec_dev_wm8960 = { | |
735 | .probe = wm8960_probe, | |
736 | .remove = wm8960_remove, | |
737 | .suspend = wm8960_suspend, | |
738 | .resume = wm8960_resume, | |
739 | }; | |
740 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960); | |
741 | ||
7084a42b MB |
742 | static int wm8960_register(struct wm8960_priv *wm8960, |
743 | enum snd_soc_control_type control) | |
f2644a2c MB |
744 | { |
745 | struct wm8960_data *pdata = wm8960->codec.dev->platform_data; | |
746 | struct snd_soc_codec *codec = &wm8960->codec; | |
747 | int ret; | |
748 | u16 reg; | |
749 | ||
750 | if (wm8960_codec) { | |
751 | dev_err(codec->dev, "Another WM8960 is registered\n"); | |
1a01417e MB |
752 | ret = -EINVAL; |
753 | goto err; | |
f2644a2c MB |
754 | } |
755 | ||
756 | if (!pdata) { | |
757 | dev_warn(codec->dev, "No platform data supplied\n"); | |
758 | } else { | |
759 | if (pdata->dres > WM8960_DRES_MAX) { | |
760 | dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres); | |
761 | pdata->dres = 0; | |
762 | } | |
763 | } | |
764 | ||
765 | mutex_init(&codec->mutex); | |
766 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
767 | INIT_LIST_HEAD(&codec->dapm_paths); | |
768 | ||
769 | codec->private_data = wm8960; | |
770 | codec->name = "WM8960"; | |
771 | codec->owner = THIS_MODULE; | |
f2644a2c MB |
772 | codec->bias_level = SND_SOC_BIAS_OFF; |
773 | codec->set_bias_level = wm8960_set_bias_level; | |
774 | codec->dai = &wm8960_dai; | |
775 | codec->num_dai = 1; | |
776 | codec->reg_cache_size = WM8960_CACHEREGNUM; | |
777 | codec->reg_cache = &wm8960->reg_cache; | |
778 | ||
779 | memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg)); | |
780 | ||
7084a42b | 781 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); |
17a52fd6 MB |
782 | if (ret < 0) { |
783 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
784 | goto err; | |
785 | } | |
786 | ||
f2644a2c MB |
787 | ret = wm8960_reset(codec); |
788 | if (ret < 0) { | |
789 | dev_err(codec->dev, "Failed to issue reset\n"); | |
1a01417e | 790 | goto err; |
f2644a2c MB |
791 | } |
792 | ||
793 | wm8960_dai.dev = codec->dev; | |
794 | ||
795 | wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
796 | ||
797 | /* Latch the update bits */ | |
17a52fd6 MB |
798 | reg = snd_soc_read(codec, WM8960_LINVOL); |
799 | snd_soc_write(codec, WM8960_LINVOL, reg | 0x100); | |
800 | reg = snd_soc_read(codec, WM8960_RINVOL); | |
801 | snd_soc_write(codec, WM8960_RINVOL, reg | 0x100); | |
802 | reg = snd_soc_read(codec, WM8960_LADC); | |
803 | snd_soc_write(codec, WM8960_LADC, reg | 0x100); | |
804 | reg = snd_soc_read(codec, WM8960_RADC); | |
805 | snd_soc_write(codec, WM8960_RADC, reg | 0x100); | |
806 | reg = snd_soc_read(codec, WM8960_LDAC); | |
807 | snd_soc_write(codec, WM8960_LDAC, reg | 0x100); | |
808 | reg = snd_soc_read(codec, WM8960_RDAC); | |
809 | snd_soc_write(codec, WM8960_RDAC, reg | 0x100); | |
810 | reg = snd_soc_read(codec, WM8960_LOUT1); | |
811 | snd_soc_write(codec, WM8960_LOUT1, reg | 0x100); | |
812 | reg = snd_soc_read(codec, WM8960_ROUT1); | |
813 | snd_soc_write(codec, WM8960_ROUT1, reg | 0x100); | |
814 | reg = snd_soc_read(codec, WM8960_LOUT2); | |
815 | snd_soc_write(codec, WM8960_LOUT2, reg | 0x100); | |
816 | reg = snd_soc_read(codec, WM8960_ROUT2); | |
817 | snd_soc_write(codec, WM8960_ROUT2, reg | 0x100); | |
f2644a2c MB |
818 | |
819 | wm8960_codec = codec; | |
820 | ||
821 | ret = snd_soc_register_codec(codec); | |
822 | if (ret != 0) { | |
823 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
1a01417e | 824 | goto err; |
f2644a2c MB |
825 | } |
826 | ||
827 | ret = snd_soc_register_dai(&wm8960_dai); | |
828 | if (ret != 0) { | |
829 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
1a01417e | 830 | goto err_codec; |
f2644a2c MB |
831 | } |
832 | ||
833 | return 0; | |
1a01417e MB |
834 | |
835 | err_codec: | |
836 | snd_soc_unregister_codec(codec); | |
837 | err: | |
838 | kfree(wm8960); | |
839 | return ret; | |
f2644a2c MB |
840 | } |
841 | ||
842 | static void wm8960_unregister(struct wm8960_priv *wm8960) | |
843 | { | |
844 | wm8960_set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF); | |
845 | snd_soc_unregister_dai(&wm8960_dai); | |
846 | snd_soc_unregister_codec(&wm8960->codec); | |
847 | kfree(wm8960); | |
848 | wm8960_codec = NULL; | |
849 | } | |
850 | ||
851 | static __devinit int wm8960_i2c_probe(struct i2c_client *i2c, | |
852 | const struct i2c_device_id *id) | |
853 | { | |
854 | struct wm8960_priv *wm8960; | |
855 | struct snd_soc_codec *codec; | |
856 | ||
857 | wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL); | |
858 | if (wm8960 == NULL) | |
859 | return -ENOMEM; | |
860 | ||
861 | codec = &wm8960->codec; | |
f2644a2c MB |
862 | |
863 | i2c_set_clientdata(i2c, wm8960); | |
864 | codec->control_data = i2c; | |
865 | ||
866 | codec->dev = &i2c->dev; | |
867 | ||
7084a42b | 868 | return wm8960_register(wm8960, SND_SOC_I2C); |
f2644a2c MB |
869 | } |
870 | ||
871 | static __devexit int wm8960_i2c_remove(struct i2c_client *client) | |
872 | { | |
873 | struct wm8960_priv *wm8960 = i2c_get_clientdata(client); | |
874 | wm8960_unregister(wm8960); | |
875 | return 0; | |
876 | } | |
877 | ||
878 | static const struct i2c_device_id wm8960_i2c_id[] = { | |
879 | { "wm8960", 0 }, | |
880 | { } | |
881 | }; | |
882 | MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); | |
883 | ||
884 | static struct i2c_driver wm8960_i2c_driver = { | |
885 | .driver = { | |
a24d62d2 | 886 | .name = "wm8960", |
f2644a2c MB |
887 | .owner = THIS_MODULE, |
888 | }, | |
889 | .probe = wm8960_i2c_probe, | |
890 | .remove = __devexit_p(wm8960_i2c_remove), | |
891 | .id_table = wm8960_i2c_id, | |
892 | }; | |
893 | ||
894 | static int __init wm8960_modinit(void) | |
895 | { | |
896 | int ret; | |
897 | ||
898 | ret = i2c_add_driver(&wm8960_i2c_driver); | |
899 | if (ret != 0) { | |
900 | printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n", | |
901 | ret); | |
902 | } | |
903 | ||
904 | return ret; | |
905 | } | |
906 | module_init(wm8960_modinit); | |
907 | ||
908 | static void __exit wm8960_exit(void) | |
909 | { | |
910 | i2c_del_driver(&wm8960_i2c_driver); | |
911 | } | |
912 | module_exit(wm8960_exit); | |
913 | ||
914 | ||
915 | MODULE_DESCRIPTION("ASoC WM8960 driver"); | |
916 | MODULE_AUTHOR("Liam Girdwood"); | |
917 | MODULE_LICENSE("GPL"); |