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1 | /* |
2 | * wm8974.c -- WM8974 ALSA Soc Audio driver | |
3 | * | |
8b83a193 | 4 | * Copyright 2006-2009 Wolfson Microelectronics PLC. |
0a1bf553 | 5 | * |
4fcbbb67 | 6 | * Author: Liam Girdwood <linux@wolfsonmicro.com> |
0a1bf553 MB |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/moduleparam.h> | |
15 | #include <linux/version.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/pm.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <sound/core.h> | |
23 | #include <sound/pcm.h> | |
24 | #include <sound/pcm_params.h> | |
25 | #include <sound/soc.h> | |
26 | #include <sound/soc-dapm.h> | |
27 | #include <sound/initval.h> | |
a5f8d2f1 | 28 | #include <sound/tlv.h> |
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29 | |
30 | #include "wm8974.h" | |
31 | ||
0a1bf553 | 32 | static const u16 wm8974_reg[WM8974_CACHEREGNUM] = { |
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33 | 0x0000, 0x0000, 0x0000, 0x0000, |
34 | 0x0050, 0x0000, 0x0140, 0x0000, | |
35 | 0x0000, 0x0000, 0x0000, 0x00ff, | |
36 | 0x0000, 0x0000, 0x0100, 0x00ff, | |
37 | 0x0000, 0x0000, 0x012c, 0x002c, | |
38 | 0x002c, 0x002c, 0x002c, 0x0000, | |
39 | 0x0032, 0x0000, 0x0000, 0x0000, | |
40 | 0x0000, 0x0000, 0x0000, 0x0000, | |
41 | 0x0038, 0x000b, 0x0032, 0x0000, | |
42 | 0x0008, 0x000c, 0x0093, 0x00e9, | |
43 | 0x0000, 0x0000, 0x0000, 0x0000, | |
44 | 0x0003, 0x0010, 0x0000, 0x0000, | |
45 | 0x0000, 0x0002, 0x0000, 0x0000, | |
46 | 0x0000, 0x0000, 0x0039, 0x0000, | |
47 | 0x0000, | |
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48 | }; |
49 | ||
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50 | #define WM8974_POWER1_BIASEN 0x08 |
51 | #define WM8974_POWER1_BUFIOEN 0x10 | |
52 | ||
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53 | struct wm8974_priv { |
54 | struct snd_soc_codec codec; | |
55 | u16 reg_cache[WM8974_CACHEREGNUM]; | |
56 | }; | |
57 | ||
58 | static struct snd_soc_codec *wm8974_codec; | |
59 | ||
1e97f50b | 60 | #define wm8974_reset(c) snd_soc_write(c, WM8974_RESET, 0) |
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61 | |
62 | static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" }; | |
63 | static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" }; | |
64 | static const char *wm8974_eqmode[] = {"Capture", "Playback" }; | |
65 | static const char *wm8974_bw[] = {"Narrow", "Wide" }; | |
66 | static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" }; | |
67 | static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" }; | |
68 | static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" }; | |
69 | static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" }; | |
70 | static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" }; | |
71 | static const char *wm8974_alc[] = {"ALC", "Limiter" }; | |
72 | ||
73 | static const struct soc_enum wm8974_enum[] = { | |
74 | SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */ | |
75 | SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */ | |
76 | SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp), | |
77 | SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode), | |
78 | ||
79 | SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1), | |
80 | SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw), | |
81 | SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2), | |
82 | SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw), | |
83 | ||
84 | SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3), | |
85 | SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw), | |
86 | SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4), | |
87 | SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw), | |
88 | ||
89 | SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5), | |
90 | SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc), | |
91 | }; | |
92 | ||
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93 | static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" }; |
94 | ||
95 | static const struct soc_enum wm8974_auxmode = | |
96 | SOC_ENUM_SINGLE(WM8974_INPUT, 3, 2, wm8974_auxmode_text); | |
97 | ||
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98 | static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1); |
99 | static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); | |
100 | static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0); | |
101 | static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0); | |
102 | ||
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103 | static const struct snd_kcontrol_new wm8974_snd_controls[] = { |
104 | ||
105 | SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0), | |
106 | ||
107 | SOC_ENUM("DAC Companding", wm8974_enum[1]), | |
108 | SOC_ENUM("ADC Companding", wm8974_enum[0]), | |
109 | ||
110 | SOC_ENUM("Playback De-emphasis", wm8974_enum[2]), | |
111 | SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0), | |
112 | ||
a5f8d2f1 | 113 | SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv), |
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114 | |
115 | SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0), | |
116 | SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0), | |
25cbf465 | 117 | SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0), |
0a1bf553 | 118 | |
a5f8d2f1 | 119 | SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv), |
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120 | |
121 | SOC_ENUM("Equaliser Function", wm8974_enum[3]), | |
122 | SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]), | |
a5f8d2f1 | 123 | SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv), |
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124 | |
125 | SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]), | |
126 | SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]), | |
a5f8d2f1 | 127 | SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv), |
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128 | |
129 | SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]), | |
130 | SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]), | |
a5f8d2f1 | 131 | SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv), |
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132 | |
133 | SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]), | |
134 | SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]), | |
a5f8d2f1 | 135 | SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv), |
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136 | |
137 | SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]), | |
138 | SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]), | |
a5f8d2f1 | 139 | SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv), |
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140 | |
141 | SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0), | |
142 | SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0), | |
143 | SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0), | |
144 | ||
145 | SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0), | |
146 | SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0), | |
147 | ||
148 | SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0), | |
149 | SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0), | |
150 | SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0), | |
151 | ||
152 | SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0), | |
153 | SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0), | |
154 | SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0), | |
155 | ||
156 | SOC_ENUM("ALC Capture Mode", wm8974_enum[13]), | |
157 | SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0), | |
158 | SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0), | |
159 | ||
160 | SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0), | |
161 | SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0), | |
162 | ||
163 | SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0), | |
a5f8d2f1 | 164 | SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv), |
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165 | |
166 | SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0), | |
167 | SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1), | |
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168 | SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv), |
169 | ||
170 | SOC_ENUM("Aux Mode", wm8974_auxmode), | |
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171 | |
172 | SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0), | |
8a123ee2 | 173 | SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1), |
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174 | }; |
175 | ||
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176 | /* Speaker Output Mixer */ |
177 | static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = { | |
178 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0), | |
179 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0), | |
180 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 1), | |
181 | }; | |
182 | ||
183 | /* Mono Output Mixer */ | |
184 | static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = { | |
185 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0), | |
186 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0), | |
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187 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0), |
188 | }; | |
189 | ||
190 | /* Boost mixer */ | |
191 | static const struct snd_kcontrol_new wm8974_boost_mixer[] = { | |
192 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0), | |
193 | }; | |
194 | ||
195 | /* Input PGA */ | |
196 | static const struct snd_kcontrol_new wm8974_inpga[] = { | |
197 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0), | |
198 | SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0), | |
199 | SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0), | |
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200 | }; |
201 | ||
202 | /* AUX Input boost vol */ | |
203 | static const struct snd_kcontrol_new wm8974_aux_boost_controls = | |
204 | SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); | |
205 | ||
206 | /* Mic Input boost vol */ | |
207 | static const struct snd_kcontrol_new wm8974_mic_boost_controls = | |
208 | SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); | |
209 | ||
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210 | static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { |
211 | SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, | |
212 | &wm8974_speaker_mixer_controls[0], | |
213 | ARRAY_SIZE(wm8974_speaker_mixer_controls)), | |
214 | SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, | |
215 | &wm8974_mono_mixer_controls[0], | |
216 | ARRAY_SIZE(wm8974_mono_mixer_controls)), | |
217 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), | |
8a123ee2 | 218 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0), |
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219 | SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), |
220 | SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), | |
221 | SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), | |
222 | SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), | |
0a1bf553 | 223 | |
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224 | SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga, |
225 | ARRAY_SIZE(wm8974_inpga)), | |
226 | SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, | |
227 | wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)), | |
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228 | |
229 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), | |
230 | ||
231 | SND_SOC_DAPM_INPUT("MICN"), | |
232 | SND_SOC_DAPM_INPUT("MICP"), | |
233 | SND_SOC_DAPM_INPUT("AUX"), | |
234 | SND_SOC_DAPM_OUTPUT("MONOOUT"), | |
235 | SND_SOC_DAPM_OUTPUT("SPKOUTP"), | |
236 | SND_SOC_DAPM_OUTPUT("SPKOUTN"), | |
237 | }; | |
238 | ||
239 | static const struct snd_soc_dapm_route audio_map[] = { | |
240 | /* Mono output mixer */ | |
241 | {"Mono Mixer", "PCM Playback Switch", "DAC"}, | |
242 | {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, | |
243 | {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
244 | ||
245 | /* Speaker output mixer */ | |
246 | {"Speaker Mixer", "PCM Playback Switch", "DAC"}, | |
247 | {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, | |
248 | {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
249 | ||
250 | /* Outputs */ | |
251 | {"Mono Out", NULL, "Mono Mixer"}, | |
252 | {"MONOOUT", NULL, "Mono Out"}, | |
253 | {"SpkN Out", NULL, "Speaker Mixer"}, | |
254 | {"SpkP Out", NULL, "Speaker Mixer"}, | |
255 | {"SPKOUTN", NULL, "SpkN Out"}, | |
256 | {"SPKOUTP", NULL, "SpkP Out"}, | |
257 | ||
258 | /* Boost Mixer */ | |
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259 | {"ADC", NULL, "Boost Mixer"}, |
260 | {"Boost Mixer", "Aux Switch", "Aux Input"}, | |
261 | {"Boost Mixer", NULL, "Input PGA"}, | |
262 | {"Boost Mixer", NULL, "MICP"}, | |
263 | ||
264 | /* Input PGA */ | |
265 | {"Input PGA", "Aux Switch", "Aux Input"}, | |
266 | {"Input PGA", "MicN Switch", "MICN"}, | |
267 | {"Input PGA", "MicP Switch", "MICP"}, | |
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268 | |
269 | /* Inputs */ | |
8a123ee2 | 270 | {"Aux Input", NULL, "AUX"}, |
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271 | }; |
272 | ||
273 | static int wm8974_add_widgets(struct snd_soc_codec *codec) | |
274 | { | |
275 | snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, | |
276 | ARRAY_SIZE(wm8974_dapm_widgets)); | |
277 | ||
278 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
279 | ||
280 | snd_soc_dapm_new_widgets(codec); | |
281 | return 0; | |
282 | } | |
283 | ||
284 | struct pll_ { | |
91d0c3ec | 285 | unsigned int pre_div:4; /* prescale - 1 */ |
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286 | unsigned int n:4; |
287 | unsigned int k; | |
288 | }; | |
289 | ||
91d0c3ec MB |
290 | static struct pll_ pll_div; |
291 | ||
292 | /* The size in bits of the pll divide multiplied by 10 | |
293 | * to allow rounding later */ | |
294 | #define FIXED_PLL_SIZE ((1 << 24) * 10) | |
295 | ||
296 | static void pll_factors(unsigned int target, unsigned int source) | |
297 | { | |
298 | unsigned long long Kpart; | |
299 | unsigned int K, Ndiv, Nmod; | |
300 | ||
301 | Ndiv = target / source; | |
302 | if (Ndiv < 6) { | |
303 | source >>= 1; | |
304 | pll_div.pre_div = 1; | |
305 | Ndiv = target / source; | |
306 | } else | |
307 | pll_div.pre_div = 0; | |
308 | ||
309 | if ((Ndiv < 6) || (Ndiv > 12)) | |
310 | printk(KERN_WARNING | |
8b83a193 | 311 | "WM8974 N value %u outwith recommended range!\n", |
91d0c3ec MB |
312 | Ndiv); |
313 | ||
314 | pll_div.n = Ndiv; | |
315 | Nmod = target % source; | |
316 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; | |
317 | ||
318 | do_div(Kpart, source); | |
319 | ||
320 | K = Kpart & 0xFFFFFFFF; | |
321 | ||
322 | /* Check if we need to round */ | |
323 | if ((K % 10) >= 5) | |
324 | K += 5; | |
325 | ||
326 | /* Move down to proper range now rounding is done */ | |
327 | K /= 10; | |
328 | ||
329 | pll_div.k = K; | |
330 | } | |
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331 | |
332 | static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, | |
333 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
334 | { | |
335 | struct snd_soc_codec *codec = codec_dai->codec; | |
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336 | u16 reg; |
337 | ||
1a55b3f6 | 338 | if (freq_in == 0 || freq_out == 0) { |
91d0c3ec | 339 | /* Clock CODEC directly from MCLK */ |
1e97f50b MB |
340 | reg = snd_soc_read(codec, WM8974_CLOCK); |
341 | snd_soc_write(codec, WM8974_CLOCK, reg & 0x0ff); | |
91d0c3ec MB |
342 | |
343 | /* Turn off PLL */ | |
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344 | reg = snd_soc_read(codec, WM8974_POWER1); |
345 | snd_soc_write(codec, WM8974_POWER1, reg & 0x1df); | |
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346 | return 0; |
347 | } | |
348 | ||
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349 | pll_factors(freq_out*4, freq_in); |
350 | ||
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351 | snd_soc_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n); |
352 | snd_soc_write(codec, WM8974_PLLK1, pll_div.k >> 18); | |
353 | snd_soc_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff); | |
354 | snd_soc_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff); | |
355 | reg = snd_soc_read(codec, WM8974_POWER1); | |
356 | snd_soc_write(codec, WM8974_POWER1, reg | 0x020); | |
1a55b3f6 | 357 | |
91d0c3ec | 358 | /* Run CODEC from PLL instead of MCLK */ |
1e97f50b MB |
359 | reg = snd_soc_read(codec, WM8974_CLOCK); |
360 | snd_soc_write(codec, WM8974_CLOCK, reg | 0x100); | |
91d0c3ec MB |
361 | |
362 | return 0; | |
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363 | } |
364 | ||
365 | /* | |
366 | * Configure WM8974 clock dividers. | |
367 | */ | |
368 | static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
369 | int div_id, int div) | |
370 | { | |
371 | struct snd_soc_codec *codec = codec_dai->codec; | |
372 | u16 reg; | |
373 | ||
374 | switch (div_id) { | |
375 | case WM8974_OPCLKDIV: | |
1e97f50b MB |
376 | reg = snd_soc_read(codec, WM8974_GPIO) & 0x1cf; |
377 | snd_soc_write(codec, WM8974_GPIO, reg | div); | |
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378 | break; |
379 | case WM8974_MCLKDIV: | |
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380 | reg = snd_soc_read(codec, WM8974_CLOCK) & 0x11f; |
381 | snd_soc_write(codec, WM8974_CLOCK, reg | div); | |
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382 | break; |
383 | case WM8974_ADCCLK: | |
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384 | reg = snd_soc_read(codec, WM8974_ADC) & 0x1f7; |
385 | snd_soc_write(codec, WM8974_ADC, reg | div); | |
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386 | break; |
387 | case WM8974_DACCLK: | |
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388 | reg = snd_soc_read(codec, WM8974_DAC) & 0x1f7; |
389 | snd_soc_write(codec, WM8974_DAC, reg | div); | |
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390 | break; |
391 | case WM8974_BCLKDIV: | |
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392 | reg = snd_soc_read(codec, WM8974_CLOCK) & 0x1e3; |
393 | snd_soc_write(codec, WM8974_CLOCK, reg | div); | |
0a1bf553 MB |
394 | break; |
395 | default: | |
396 | return -EINVAL; | |
397 | } | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
403 | unsigned int fmt) | |
404 | { | |
405 | struct snd_soc_codec *codec = codec_dai->codec; | |
406 | u16 iface = 0; | |
1e97f50b | 407 | u16 clk = snd_soc_read(codec, WM8974_CLOCK) & 0x1fe; |
0a1bf553 MB |
408 | |
409 | /* set master/slave audio interface */ | |
410 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
411 | case SND_SOC_DAIFMT_CBM_CFM: | |
412 | clk |= 0x0001; | |
413 | break; | |
414 | case SND_SOC_DAIFMT_CBS_CFS: | |
415 | break; | |
416 | default: | |
417 | return -EINVAL; | |
418 | } | |
419 | ||
420 | /* interface format */ | |
421 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
422 | case SND_SOC_DAIFMT_I2S: | |
423 | iface |= 0x0010; | |
424 | break; | |
425 | case SND_SOC_DAIFMT_RIGHT_J: | |
426 | break; | |
427 | case SND_SOC_DAIFMT_LEFT_J: | |
428 | iface |= 0x0008; | |
429 | break; | |
430 | case SND_SOC_DAIFMT_DSP_A: | |
431 | iface |= 0x00018; | |
432 | break; | |
433 | default: | |
434 | return -EINVAL; | |
435 | } | |
436 | ||
437 | /* clock inversion */ | |
438 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
439 | case SND_SOC_DAIFMT_NB_NF: | |
440 | break; | |
441 | case SND_SOC_DAIFMT_IB_IF: | |
442 | iface |= 0x0180; | |
443 | break; | |
444 | case SND_SOC_DAIFMT_IB_NF: | |
445 | iface |= 0x0100; | |
446 | break; | |
447 | case SND_SOC_DAIFMT_NB_IF: | |
448 | iface |= 0x0080; | |
449 | break; | |
450 | default: | |
451 | return -EINVAL; | |
452 | } | |
453 | ||
1e97f50b MB |
454 | snd_soc_write(codec, WM8974_IFACE, iface); |
455 | snd_soc_write(codec, WM8974_CLOCK, clk); | |
0a1bf553 MB |
456 | return 0; |
457 | } | |
458 | ||
459 | static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream, | |
460 | struct snd_pcm_hw_params *params, | |
461 | struct snd_soc_dai *dai) | |
462 | { | |
463 | struct snd_soc_codec *codec = dai->codec; | |
1e97f50b MB |
464 | u16 iface = snd_soc_read(codec, WM8974_IFACE) & 0x19f; |
465 | u16 adn = snd_soc_read(codec, WM8974_ADD) & 0x1f1; | |
0a1bf553 MB |
466 | |
467 | /* bit size */ | |
468 | switch (params_format(params)) { | |
469 | case SNDRV_PCM_FORMAT_S16_LE: | |
470 | break; | |
471 | case SNDRV_PCM_FORMAT_S20_3LE: | |
472 | iface |= 0x0020; | |
473 | break; | |
474 | case SNDRV_PCM_FORMAT_S24_LE: | |
475 | iface |= 0x0040; | |
476 | break; | |
477 | case SNDRV_PCM_FORMAT_S32_LE: | |
478 | iface |= 0x0060; | |
479 | break; | |
480 | } | |
481 | ||
482 | /* filter coefficient */ | |
483 | switch (params_rate(params)) { | |
484 | case SNDRV_PCM_RATE_8000: | |
485 | adn |= 0x5 << 1; | |
486 | break; | |
487 | case SNDRV_PCM_RATE_11025: | |
488 | adn |= 0x4 << 1; | |
489 | break; | |
490 | case SNDRV_PCM_RATE_16000: | |
491 | adn |= 0x3 << 1; | |
492 | break; | |
493 | case SNDRV_PCM_RATE_22050: | |
494 | adn |= 0x2 << 1; | |
495 | break; | |
496 | case SNDRV_PCM_RATE_32000: | |
497 | adn |= 0x1 << 1; | |
498 | break; | |
499 | case SNDRV_PCM_RATE_44100: | |
8b83a193 | 500 | case SNDRV_PCM_RATE_48000: |
0a1bf553 MB |
501 | break; |
502 | } | |
503 | ||
1e97f50b MB |
504 | snd_soc_write(codec, WM8974_IFACE, iface); |
505 | snd_soc_write(codec, WM8974_ADD, adn); | |
0a1bf553 MB |
506 | return 0; |
507 | } | |
508 | ||
509 | static int wm8974_mute(struct snd_soc_dai *dai, int mute) | |
510 | { | |
511 | struct snd_soc_codec *codec = dai->codec; | |
1e97f50b | 512 | u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf; |
0a1bf553 | 513 | |
1a55b3f6 | 514 | if (mute) |
1e97f50b | 515 | snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40); |
0a1bf553 | 516 | else |
1e97f50b | 517 | snd_soc_write(codec, WM8974_DAC, mute_reg); |
0a1bf553 MB |
518 | return 0; |
519 | } | |
520 | ||
521 | /* liam need to make this lower power with dapm */ | |
522 | static int wm8974_set_bias_level(struct snd_soc_codec *codec, | |
523 | enum snd_soc_bias_level level) | |
524 | { | |
1e97f50b | 525 | u16 power1 = snd_soc_read(codec, WM8974_POWER1) & ~0x3; |
df1ef7a3 | 526 | |
0a1bf553 MB |
527 | switch (level) { |
528 | case SND_SOC_BIAS_ON: | |
0a1bf553 | 529 | case SND_SOC_BIAS_PREPARE: |
df1ef7a3 | 530 | power1 |= 0x1; /* VMID 50k */ |
1e97f50b | 531 | snd_soc_write(codec, WM8974_POWER1, power1); |
0a1bf553 | 532 | break; |
df1ef7a3 | 533 | |
0a1bf553 | 534 | case SND_SOC_BIAS_STANDBY: |
df1ef7a3 MB |
535 | power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN; |
536 | ||
537 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
538 | /* Initial cap charge at VMID 5k */ | |
1e97f50b | 539 | snd_soc_write(codec, WM8974_POWER1, power1 | 0x3); |
df1ef7a3 MB |
540 | mdelay(100); |
541 | } | |
542 | ||
543 | power1 |= 0x2; /* VMID 500k */ | |
1e97f50b | 544 | snd_soc_write(codec, WM8974_POWER1, power1); |
0a1bf553 | 545 | break; |
df1ef7a3 | 546 | |
0a1bf553 | 547 | case SND_SOC_BIAS_OFF: |
1e97f50b MB |
548 | snd_soc_write(codec, WM8974_POWER1, 0); |
549 | snd_soc_write(codec, WM8974_POWER2, 0); | |
550 | snd_soc_write(codec, WM8974_POWER3, 0); | |
0a1bf553 MB |
551 | break; |
552 | } | |
df1ef7a3 | 553 | |
0a1bf553 MB |
554 | codec->bias_level = level; |
555 | return 0; | |
556 | } | |
557 | ||
1a55b3f6 | 558 | #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000) |
0a1bf553 MB |
559 | |
560 | #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
561 | SNDRV_PCM_FMTBIT_S24_LE) | |
562 | ||
563 | static struct snd_soc_dai_ops wm8974_ops = { | |
564 | .hw_params = wm8974_pcm_hw_params, | |
565 | .digital_mute = wm8974_mute, | |
566 | .set_fmt = wm8974_set_dai_fmt, | |
567 | .set_clkdiv = wm8974_set_dai_clkdiv, | |
568 | .set_pll = wm8974_set_dai_pll, | |
569 | }; | |
570 | ||
571 | struct snd_soc_dai wm8974_dai = { | |
572 | .name = "WM8974 HiFi", | |
573 | .playback = { | |
574 | .stream_name = "Playback", | |
575 | .channels_min = 1, | |
33d81af4 | 576 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
577 | .rates = WM8974_RATES, |
578 | .formats = WM8974_FORMATS,}, | |
579 | .capture = { | |
580 | .stream_name = "Capture", | |
581 | .channels_min = 1, | |
33d81af4 | 582 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
583 | .rates = WM8974_RATES, |
584 | .formats = WM8974_FORMATS,}, | |
585 | .ops = &wm8974_ops, | |
cb11d39e | 586 | .symmetric_rates = 1, |
0a1bf553 MB |
587 | }; |
588 | EXPORT_SYMBOL_GPL(wm8974_dai); | |
589 | ||
590 | static int wm8974_suspend(struct platform_device *pdev, pm_message_t state) | |
591 | { | |
592 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
593 | struct snd_soc_codec *codec = socdev->card->codec; | |
594 | ||
595 | wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
596 | return 0; | |
597 | } | |
598 | ||
599 | static int wm8974_resume(struct platform_device *pdev) | |
600 | { | |
601 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
602 | struct snd_soc_codec *codec = socdev->card->codec; | |
603 | int i; | |
604 | u8 data[2]; | |
605 | u16 *cache = codec->reg_cache; | |
606 | ||
607 | /* Sync reg_cache with the hardware */ | |
608 | for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { | |
609 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
610 | data[1] = cache[i] & 0x00ff; | |
611 | codec->hw_write(codec->control_data, data, 2); | |
612 | } | |
613 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
614 | wm8974_set_bias_level(codec, codec->suspend_bias_level); | |
615 | return 0; | |
616 | } | |
617 | ||
4fcbbb67 | 618 | static int wm8974_probe(struct platform_device *pdev) |
0a1bf553 | 619 | { |
4fcbbb67 MB |
620 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
621 | struct snd_soc_codec *codec; | |
0a1bf553 MB |
622 | int ret = 0; |
623 | ||
4fcbbb67 MB |
624 | if (wm8974_codec == NULL) { |
625 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
626 | return -ENODEV; | |
627 | } | |
0a1bf553 | 628 | |
4fcbbb67 MB |
629 | socdev->card->codec = wm8974_codec; |
630 | codec = wm8974_codec; | |
0a1bf553 MB |
631 | |
632 | /* register pcms */ | |
633 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
1a55b3f6 | 634 | if (ret < 0) { |
4fcbbb67 | 635 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); |
0a1bf553 MB |
636 | goto pcm_err; |
637 | } | |
638 | ||
4fcbbb67 MB |
639 | snd_soc_add_controls(codec, wm8974_snd_controls, |
640 | ARRAY_SIZE(wm8974_snd_controls)); | |
0a1bf553 MB |
641 | wm8974_add_widgets(codec); |
642 | ret = snd_soc_init_card(socdev); | |
643 | if (ret < 0) { | |
4fcbbb67 | 644 | dev_err(codec->dev, "failed to register card: %d\n", ret); |
0a1bf553 MB |
645 | goto card_err; |
646 | } | |
4fcbbb67 | 647 | |
0a1bf553 MB |
648 | return ret; |
649 | ||
650 | card_err: | |
651 | snd_soc_free_pcms(socdev); | |
652 | snd_soc_dapm_free(socdev); | |
653 | pcm_err: | |
0a1bf553 MB |
654 | return ret; |
655 | } | |
656 | ||
4fcbbb67 MB |
657 | /* power down chip */ |
658 | static int wm8974_remove(struct platform_device *pdev) | |
659 | { | |
660 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
0a1bf553 | 661 | |
4fcbbb67 MB |
662 | snd_soc_free_pcms(socdev); |
663 | snd_soc_dapm_free(socdev); | |
0a1bf553 | 664 | |
4fcbbb67 MB |
665 | return 0; |
666 | } | |
0a1bf553 | 667 | |
4fcbbb67 MB |
668 | struct snd_soc_codec_device soc_codec_dev_wm8974 = { |
669 | .probe = wm8974_probe, | |
670 | .remove = wm8974_remove, | |
671 | .suspend = wm8974_suspend, | |
672 | .resume = wm8974_resume, | |
673 | }; | |
674 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); | |
0a1bf553 | 675 | |
4fcbbb67 | 676 | static __devinit int wm8974_register(struct wm8974_priv *wm8974) |
0a1bf553 | 677 | { |
0a1bf553 | 678 | int ret; |
4fcbbb67 | 679 | struct snd_soc_codec *codec = &wm8974->codec; |
0a1bf553 | 680 | |
4fcbbb67 MB |
681 | if (wm8974_codec) { |
682 | dev_err(codec->dev, "Another WM8974 is registered\n"); | |
683 | return -EINVAL; | |
684 | } | |
0a1bf553 | 685 | |
4fcbbb67 MB |
686 | mutex_init(&codec->mutex); |
687 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
688 | INIT_LIST_HEAD(&codec->dapm_paths); | |
0a1bf553 | 689 | |
4fcbbb67 MB |
690 | codec->private_data = wm8974; |
691 | codec->name = "WM8974"; | |
692 | codec->owner = THIS_MODULE; | |
4fcbbb67 MB |
693 | codec->bias_level = SND_SOC_BIAS_OFF; |
694 | codec->set_bias_level = wm8974_set_bias_level; | |
695 | codec->dai = &wm8974_dai; | |
696 | codec->num_dai = 1; | |
697 | codec->reg_cache_size = WM8974_CACHEREGNUM; | |
698 | codec->reg_cache = &wm8974->reg_cache; | |
0a1bf553 | 699 | |
1e97f50b MB |
700 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C); |
701 | if (ret < 0) { | |
702 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
703 | goto err; | |
704 | } | |
705 | ||
4fcbbb67 MB |
706 | memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg)); |
707 | ||
708 | ret = wm8974_reset(codec); | |
0a1bf553 | 709 | if (ret < 0) { |
4fcbbb67 | 710 | dev_err(codec->dev, "Failed to issue reset\n"); |
1e97f50b | 711 | goto err; |
0a1bf553 MB |
712 | } |
713 | ||
4fcbbb67 MB |
714 | wm8974_dai.dev = codec->dev; |
715 | ||
716 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
717 | ||
718 | wm8974_codec = codec; | |
719 | ||
720 | ret = snd_soc_register_codec(codec); | |
721 | if (ret != 0) { | |
722 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
1e97f50b | 723 | goto err; |
0a1bf553 | 724 | } |
0a1bf553 | 725 | |
4fcbbb67 MB |
726 | ret = snd_soc_register_dai(&wm8974_dai); |
727 | if (ret != 0) { | |
728 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
1e97f50b | 729 | goto err_codec; |
4fcbbb67 | 730 | } |
0a1bf553 | 731 | |
0a1bf553 | 732 | return 0; |
1e97f50b MB |
733 | |
734 | err_codec: | |
735 | snd_soc_unregister_codec(codec); | |
736 | err: | |
737 | kfree(wm8974); | |
738 | return ret; | |
0a1bf553 MB |
739 | } |
740 | ||
4fcbbb67 | 741 | static __devexit void wm8974_unregister(struct wm8974_priv *wm8974) |
0a1bf553 | 742 | { |
4fcbbb67 MB |
743 | wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF); |
744 | snd_soc_unregister_dai(&wm8974_dai); | |
745 | snd_soc_unregister_codec(&wm8974->codec); | |
746 | kfree(wm8974); | |
747 | wm8974_codec = NULL; | |
0a1bf553 MB |
748 | } |
749 | ||
4fcbbb67 MB |
750 | static __devinit int wm8974_i2c_probe(struct i2c_client *i2c, |
751 | const struct i2c_device_id *id) | |
0a1bf553 | 752 | { |
4fcbbb67 | 753 | struct wm8974_priv *wm8974; |
0a1bf553 | 754 | struct snd_soc_codec *codec; |
0a1bf553 | 755 | |
4fcbbb67 MB |
756 | wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL); |
757 | if (wm8974 == NULL) | |
0a1bf553 MB |
758 | return -ENOMEM; |
759 | ||
4fcbbb67 MB |
760 | codec = &wm8974->codec; |
761 | codec->hw_write = (hw_write_t)i2c_master_send; | |
0a1bf553 | 762 | |
4fcbbb67 MB |
763 | i2c_set_clientdata(i2c, wm8974); |
764 | codec->control_data = i2c; | |
0a1bf553 | 765 | |
4fcbbb67 | 766 | codec->dev = &i2c->dev; |
0a1bf553 | 767 | |
4fcbbb67 MB |
768 | return wm8974_register(wm8974); |
769 | } | |
0a1bf553 | 770 | |
4fcbbb67 MB |
771 | static __devexit int wm8974_i2c_remove(struct i2c_client *client) |
772 | { | |
773 | struct wm8974_priv *wm8974 = i2c_get_clientdata(client); | |
774 | wm8974_unregister(wm8974); | |
0a1bf553 MB |
775 | return 0; |
776 | } | |
777 | ||
4fcbbb67 MB |
778 | static const struct i2c_device_id wm8974_i2c_id[] = { |
779 | { "wm8974", 0 }, | |
780 | { } | |
781 | }; | |
782 | MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id); | |
783 | ||
784 | static struct i2c_driver wm8974_i2c_driver = { | |
785 | .driver = { | |
8b83a193 | 786 | .name = "WM8974", |
4fcbbb67 MB |
787 | .owner = THIS_MODULE, |
788 | }, | |
789 | .probe = wm8974_i2c_probe, | |
790 | .remove = __devexit_p(wm8974_i2c_remove), | |
791 | .id_table = wm8974_i2c_id, | |
0a1bf553 | 792 | }; |
0a1bf553 MB |
793 | |
794 | static int __init wm8974_modinit(void) | |
795 | { | |
4fcbbb67 | 796 | return i2c_add_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
797 | } |
798 | module_init(wm8974_modinit); | |
799 | ||
800 | static void __exit wm8974_exit(void) | |
801 | { | |
4fcbbb67 | 802 | i2c_del_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
803 | } |
804 | module_exit(wm8974_exit); | |
805 | ||
806 | MODULE_DESCRIPTION("ASoC WM8974 driver"); | |
807 | MODULE_AUTHOR("Liam Girdwood"); | |
808 | MODULE_LICENSE("GPL"); |