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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> | |
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15 | #include <linux/kernel.h> |
16 | #include <linux/init.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/pm.h> | |
19 | #include <linux/i2c.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <sound/core.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/pcm_params.h> | |
24 | #include <sound/soc.h> | |
25 | #include <sound/soc-dapm.h> | |
26 | #include <sound/initval.h> | |
a5f8d2f1 | 27 | #include <sound/tlv.h> |
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28 | |
29 | #include "wm8974.h" | |
30 | ||
0a1bf553 | 31 | static const u16 wm8974_reg[WM8974_CACHEREGNUM] = { |
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32 | 0x0000, 0x0000, 0x0000, 0x0000, |
33 | 0x0050, 0x0000, 0x0140, 0x0000, | |
34 | 0x0000, 0x0000, 0x0000, 0x00ff, | |
35 | 0x0000, 0x0000, 0x0100, 0x00ff, | |
36 | 0x0000, 0x0000, 0x012c, 0x002c, | |
37 | 0x002c, 0x002c, 0x002c, 0x0000, | |
38 | 0x0032, 0x0000, 0x0000, 0x0000, | |
39 | 0x0000, 0x0000, 0x0000, 0x0000, | |
40 | 0x0038, 0x000b, 0x0032, 0x0000, | |
41 | 0x0008, 0x000c, 0x0093, 0x00e9, | |
42 | 0x0000, 0x0000, 0x0000, 0x0000, | |
43 | 0x0003, 0x0010, 0x0000, 0x0000, | |
44 | 0x0000, 0x0002, 0x0000, 0x0000, | |
45 | 0x0000, 0x0000, 0x0039, 0x0000, | |
46 | 0x0000, | |
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47 | }; |
48 | ||
df1ef7a3 | 49 | #define WM8974_POWER1_BIASEN 0x08 |
48c03ce7 | 50 | #define WM8974_POWER1_BUFIOEN 0x04 |
df1ef7a3 | 51 | |
4fcbbb67 MB |
52 | struct wm8974_priv { |
53 | struct snd_soc_codec codec; | |
54 | u16 reg_cache[WM8974_CACHEREGNUM]; | |
55 | }; | |
56 | ||
57 | static struct snd_soc_codec *wm8974_codec; | |
58 | ||
1e97f50b | 59 | #define wm8974_reset(c) snd_soc_write(c, WM8974_RESET, 0) |
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60 | |
61 | static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" }; | |
62 | static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" }; | |
63 | static const char *wm8974_eqmode[] = {"Capture", "Playback" }; | |
64 | static const char *wm8974_bw[] = {"Narrow", "Wide" }; | |
65 | static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" }; | |
66 | static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" }; | |
67 | static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" }; | |
68 | static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" }; | |
69 | static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" }; | |
70 | static const char *wm8974_alc[] = {"ALC", "Limiter" }; | |
71 | ||
72 | static const struct soc_enum wm8974_enum[] = { | |
73 | SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */ | |
74 | SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */ | |
75 | SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp), | |
76 | SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode), | |
77 | ||
78 | SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1), | |
79 | SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw), | |
80 | SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2), | |
81 | SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw), | |
82 | ||
83 | SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3), | |
84 | SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw), | |
85 | SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4), | |
86 | SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw), | |
87 | ||
88 | SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5), | |
89 | SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc), | |
90 | }; | |
91 | ||
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92 | static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" }; |
93 | ||
94 | static const struct soc_enum wm8974_auxmode = | |
95 | SOC_ENUM_SINGLE(WM8974_INPUT, 3, 2, wm8974_auxmode_text); | |
96 | ||
a5f8d2f1 MB |
97 | static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1); |
98 | static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); | |
99 | static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0); | |
100 | static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0); | |
101 | ||
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102 | static const struct snd_kcontrol_new wm8974_snd_controls[] = { |
103 | ||
104 | SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0), | |
105 | ||
106 | SOC_ENUM("DAC Companding", wm8974_enum[1]), | |
107 | SOC_ENUM("ADC Companding", wm8974_enum[0]), | |
108 | ||
109 | SOC_ENUM("Playback De-emphasis", wm8974_enum[2]), | |
110 | SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0), | |
111 | ||
a5f8d2f1 | 112 | SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv), |
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113 | |
114 | SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0), | |
115 | SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0), | |
25cbf465 | 116 | SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0), |
0a1bf553 | 117 | |
a5f8d2f1 | 118 | SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv), |
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119 | |
120 | SOC_ENUM("Equaliser Function", wm8974_enum[3]), | |
121 | SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]), | |
a5f8d2f1 | 122 | SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv), |
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123 | |
124 | SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]), | |
125 | SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]), | |
a5f8d2f1 | 126 | SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv), |
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127 | |
128 | SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]), | |
129 | SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]), | |
a5f8d2f1 | 130 | SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv), |
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131 | |
132 | SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]), | |
133 | SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]), | |
a5f8d2f1 | 134 | SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv), |
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135 | |
136 | SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]), | |
137 | SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]), | |
a5f8d2f1 | 138 | SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv), |
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139 | |
140 | SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0), | |
141 | SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0), | |
142 | SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0), | |
143 | ||
144 | SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0), | |
145 | SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0), | |
146 | ||
147 | SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0), | |
148 | SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0), | |
149 | SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0), | |
150 | ||
151 | SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0), | |
152 | SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0), | |
153 | SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0), | |
154 | ||
155 | SOC_ENUM("ALC Capture Mode", wm8974_enum[13]), | |
156 | SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0), | |
157 | SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0), | |
158 | ||
159 | SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0), | |
160 | SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0), | |
161 | ||
162 | SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0), | |
a5f8d2f1 | 163 | SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv), |
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164 | |
165 | SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0), | |
166 | SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1), | |
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167 | SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv), |
168 | ||
169 | SOC_ENUM("Aux Mode", wm8974_auxmode), | |
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170 | |
171 | SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0), | |
8a123ee2 | 172 | SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1), |
b2c3e923 GL |
173 | |
174 | /* DAC / ADC oversampling */ | |
175 | SOC_SINGLE("DAC 128x Oversampling Switch", WM8974_DAC, 8, 1, 0), | |
176 | SOC_SINGLE("ADC 128x Oversampling Switch", WM8974_ADC, 8, 1, 0), | |
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177 | }; |
178 | ||
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179 | /* Speaker Output Mixer */ |
180 | static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = { | |
181 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0), | |
182 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0), | |
183 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 1), | |
184 | }; | |
185 | ||
186 | /* Mono Output Mixer */ | |
187 | static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = { | |
188 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0), | |
189 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0), | |
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190 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0), |
191 | }; | |
192 | ||
193 | /* Boost mixer */ | |
194 | static const struct snd_kcontrol_new wm8974_boost_mixer[] = { | |
195 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0), | |
196 | }; | |
197 | ||
198 | /* Input PGA */ | |
199 | static const struct snd_kcontrol_new wm8974_inpga[] = { | |
200 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0), | |
201 | SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0), | |
202 | SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0), | |
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203 | }; |
204 | ||
205 | /* AUX Input boost vol */ | |
206 | static const struct snd_kcontrol_new wm8974_aux_boost_controls = | |
207 | SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); | |
208 | ||
209 | /* Mic Input boost vol */ | |
210 | static const struct snd_kcontrol_new wm8974_mic_boost_controls = | |
211 | SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); | |
212 | ||
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213 | static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { |
214 | SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, | |
215 | &wm8974_speaker_mixer_controls[0], | |
216 | ARRAY_SIZE(wm8974_speaker_mixer_controls)), | |
217 | SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, | |
218 | &wm8974_mono_mixer_controls[0], | |
219 | ARRAY_SIZE(wm8974_mono_mixer_controls)), | |
220 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), | |
8a123ee2 | 221 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0), |
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222 | SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), |
223 | SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), | |
224 | SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), | |
225 | SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), | |
0a1bf553 | 226 | |
8a123ee2 MB |
227 | SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga, |
228 | ARRAY_SIZE(wm8974_inpga)), | |
229 | SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, | |
230 | wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)), | |
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231 | |
232 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), | |
233 | ||
234 | SND_SOC_DAPM_INPUT("MICN"), | |
235 | SND_SOC_DAPM_INPUT("MICP"), | |
236 | SND_SOC_DAPM_INPUT("AUX"), | |
237 | SND_SOC_DAPM_OUTPUT("MONOOUT"), | |
238 | SND_SOC_DAPM_OUTPUT("SPKOUTP"), | |
239 | SND_SOC_DAPM_OUTPUT("SPKOUTN"), | |
240 | }; | |
241 | ||
242 | static const struct snd_soc_dapm_route audio_map[] = { | |
243 | /* Mono output mixer */ | |
244 | {"Mono Mixer", "PCM Playback Switch", "DAC"}, | |
245 | {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, | |
246 | {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
247 | ||
248 | /* Speaker output mixer */ | |
249 | {"Speaker Mixer", "PCM Playback Switch", "DAC"}, | |
250 | {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, | |
251 | {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
252 | ||
253 | /* Outputs */ | |
254 | {"Mono Out", NULL, "Mono Mixer"}, | |
255 | {"MONOOUT", NULL, "Mono Out"}, | |
256 | {"SpkN Out", NULL, "Speaker Mixer"}, | |
257 | {"SpkP Out", NULL, "Speaker Mixer"}, | |
258 | {"SPKOUTN", NULL, "SpkN Out"}, | |
259 | {"SPKOUTP", NULL, "SpkP Out"}, | |
260 | ||
261 | /* Boost Mixer */ | |
8a123ee2 MB |
262 | {"ADC", NULL, "Boost Mixer"}, |
263 | {"Boost Mixer", "Aux Switch", "Aux Input"}, | |
264 | {"Boost Mixer", NULL, "Input PGA"}, | |
265 | {"Boost Mixer", NULL, "MICP"}, | |
266 | ||
267 | /* Input PGA */ | |
268 | {"Input PGA", "Aux Switch", "Aux Input"}, | |
269 | {"Input PGA", "MicN Switch", "MICN"}, | |
270 | {"Input PGA", "MicP Switch", "MICP"}, | |
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271 | |
272 | /* Inputs */ | |
8a123ee2 | 273 | {"Aux Input", NULL, "AUX"}, |
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274 | }; |
275 | ||
276 | static int wm8974_add_widgets(struct snd_soc_codec *codec) | |
277 | { | |
278 | snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, | |
279 | ARRAY_SIZE(wm8974_dapm_widgets)); | |
280 | ||
281 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
282 | ||
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283 | return 0; |
284 | } | |
285 | ||
286 | struct pll_ { | |
c36b2fc7 | 287 | unsigned int pre_div:1; |
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288 | unsigned int n:4; |
289 | unsigned int k; | |
290 | }; | |
291 | ||
91d0c3ec MB |
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 | ||
c36b2fc7 MB |
296 | static void pll_factors(struct pll_ *pll_div, |
297 | unsigned int target, unsigned int source) | |
91d0c3ec MB |
298 | { |
299 | unsigned long long Kpart; | |
300 | unsigned int K, Ndiv, Nmod; | |
301 | ||
c36b2fc7 MB |
302 | /* There is a fixed divide by 4 in the output path */ |
303 | target *= 4; | |
304 | ||
91d0c3ec MB |
305 | Ndiv = target / source; |
306 | if (Ndiv < 6) { | |
c36b2fc7 MB |
307 | source /= 2; |
308 | pll_div->pre_div = 1; | |
91d0c3ec MB |
309 | Ndiv = target / source; |
310 | } else | |
c36b2fc7 | 311 | pll_div->pre_div = 0; |
91d0c3ec MB |
312 | |
313 | if ((Ndiv < 6) || (Ndiv > 12)) | |
314 | printk(KERN_WARNING | |
8b83a193 | 315 | "WM8974 N value %u outwith recommended range!\n", |
91d0c3ec MB |
316 | Ndiv); |
317 | ||
c36b2fc7 | 318 | pll_div->n = Ndiv; |
91d0c3ec MB |
319 | Nmod = target % source; |
320 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; | |
321 | ||
322 | do_div(Kpart, source); | |
323 | ||
324 | K = Kpart & 0xFFFFFFFF; | |
325 | ||
326 | /* Check if we need to round */ | |
327 | if ((K % 10) >= 5) | |
328 | K += 5; | |
329 | ||
330 | /* Move down to proper range now rounding is done */ | |
331 | K /= 10; | |
332 | ||
c36b2fc7 | 333 | pll_div->k = K; |
91d0c3ec | 334 | } |
0a1bf553 | 335 | |
85488037 MB |
336 | static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, |
337 | int source, unsigned int freq_in, unsigned int freq_out) | |
0a1bf553 MB |
338 | { |
339 | struct snd_soc_codec *codec = codec_dai->codec; | |
c36b2fc7 | 340 | struct pll_ pll_div; |
0a1bf553 MB |
341 | u16 reg; |
342 | ||
1a55b3f6 | 343 | if (freq_in == 0 || freq_out == 0) { |
91d0c3ec | 344 | /* Clock CODEC directly from MCLK */ |
1e97f50b MB |
345 | reg = snd_soc_read(codec, WM8974_CLOCK); |
346 | snd_soc_write(codec, WM8974_CLOCK, reg & 0x0ff); | |
91d0c3ec MB |
347 | |
348 | /* Turn off PLL */ | |
1e97f50b MB |
349 | reg = snd_soc_read(codec, WM8974_POWER1); |
350 | snd_soc_write(codec, WM8974_POWER1, reg & 0x1df); | |
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351 | return 0; |
352 | } | |
353 | ||
c36b2fc7 | 354 | pll_factors(&pll_div, freq_out, freq_in); |
91d0c3ec | 355 | |
1e97f50b MB |
356 | snd_soc_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n); |
357 | snd_soc_write(codec, WM8974_PLLK1, pll_div.k >> 18); | |
358 | snd_soc_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff); | |
359 | snd_soc_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff); | |
360 | reg = snd_soc_read(codec, WM8974_POWER1); | |
361 | snd_soc_write(codec, WM8974_POWER1, reg | 0x020); | |
1a55b3f6 | 362 | |
91d0c3ec | 363 | /* Run CODEC from PLL instead of MCLK */ |
1e97f50b MB |
364 | reg = snd_soc_read(codec, WM8974_CLOCK); |
365 | snd_soc_write(codec, WM8974_CLOCK, reg | 0x100); | |
91d0c3ec MB |
366 | |
367 | return 0; | |
0a1bf553 MB |
368 | } |
369 | ||
370 | /* | |
371 | * Configure WM8974 clock dividers. | |
372 | */ | |
373 | static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
374 | int div_id, int div) | |
375 | { | |
376 | struct snd_soc_codec *codec = codec_dai->codec; | |
377 | u16 reg; | |
378 | ||
379 | switch (div_id) { | |
380 | case WM8974_OPCLKDIV: | |
1e97f50b MB |
381 | reg = snd_soc_read(codec, WM8974_GPIO) & 0x1cf; |
382 | snd_soc_write(codec, WM8974_GPIO, reg | div); | |
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383 | break; |
384 | case WM8974_MCLKDIV: | |
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385 | reg = snd_soc_read(codec, WM8974_CLOCK) & 0x11f; |
386 | snd_soc_write(codec, WM8974_CLOCK, reg | div); | |
0a1bf553 | 387 | break; |
0a1bf553 | 388 | case WM8974_BCLKDIV: |
1e97f50b MB |
389 | reg = snd_soc_read(codec, WM8974_CLOCK) & 0x1e3; |
390 | snd_soc_write(codec, WM8974_CLOCK, reg | div); | |
0a1bf553 MB |
391 | break; |
392 | default: | |
393 | return -EINVAL; | |
394 | } | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
400 | unsigned int fmt) | |
401 | { | |
402 | struct snd_soc_codec *codec = codec_dai->codec; | |
403 | u16 iface = 0; | |
1e97f50b | 404 | u16 clk = snd_soc_read(codec, WM8974_CLOCK) & 0x1fe; |
0a1bf553 MB |
405 | |
406 | /* set master/slave audio interface */ | |
407 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
408 | case SND_SOC_DAIFMT_CBM_CFM: | |
409 | clk |= 0x0001; | |
410 | break; | |
411 | case SND_SOC_DAIFMT_CBS_CFS: | |
412 | break; | |
413 | default: | |
414 | return -EINVAL; | |
415 | } | |
416 | ||
417 | /* interface format */ | |
418 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
419 | case SND_SOC_DAIFMT_I2S: | |
420 | iface |= 0x0010; | |
421 | break; | |
422 | case SND_SOC_DAIFMT_RIGHT_J: | |
423 | break; | |
424 | case SND_SOC_DAIFMT_LEFT_J: | |
425 | iface |= 0x0008; | |
426 | break; | |
427 | case SND_SOC_DAIFMT_DSP_A: | |
428 | iface |= 0x00018; | |
429 | break; | |
430 | default: | |
431 | return -EINVAL; | |
432 | } | |
433 | ||
434 | /* clock inversion */ | |
435 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
436 | case SND_SOC_DAIFMT_NB_NF: | |
437 | break; | |
438 | case SND_SOC_DAIFMT_IB_IF: | |
439 | iface |= 0x0180; | |
440 | break; | |
441 | case SND_SOC_DAIFMT_IB_NF: | |
442 | iface |= 0x0100; | |
443 | break; | |
444 | case SND_SOC_DAIFMT_NB_IF: | |
445 | iface |= 0x0080; | |
446 | break; | |
447 | default: | |
448 | return -EINVAL; | |
449 | } | |
450 | ||
1e97f50b MB |
451 | snd_soc_write(codec, WM8974_IFACE, iface); |
452 | snd_soc_write(codec, WM8974_CLOCK, clk); | |
0a1bf553 MB |
453 | return 0; |
454 | } | |
455 | ||
456 | static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream, | |
457 | struct snd_pcm_hw_params *params, | |
458 | struct snd_soc_dai *dai) | |
459 | { | |
460 | struct snd_soc_codec *codec = dai->codec; | |
1e97f50b MB |
461 | u16 iface = snd_soc_read(codec, WM8974_IFACE) & 0x19f; |
462 | u16 adn = snd_soc_read(codec, WM8974_ADD) & 0x1f1; | |
0a1bf553 MB |
463 | |
464 | /* bit size */ | |
465 | switch (params_format(params)) { | |
466 | case SNDRV_PCM_FORMAT_S16_LE: | |
467 | break; | |
468 | case SNDRV_PCM_FORMAT_S20_3LE: | |
469 | iface |= 0x0020; | |
470 | break; | |
471 | case SNDRV_PCM_FORMAT_S24_LE: | |
472 | iface |= 0x0040; | |
473 | break; | |
474 | case SNDRV_PCM_FORMAT_S32_LE: | |
475 | iface |= 0x0060; | |
476 | break; | |
477 | } | |
478 | ||
479 | /* filter coefficient */ | |
480 | switch (params_rate(params)) { | |
b3172f22 | 481 | case 8000: |
0a1bf553 MB |
482 | adn |= 0x5 << 1; |
483 | break; | |
b3172f22 | 484 | case 11025: |
0a1bf553 MB |
485 | adn |= 0x4 << 1; |
486 | break; | |
b3172f22 | 487 | case 16000: |
0a1bf553 MB |
488 | adn |= 0x3 << 1; |
489 | break; | |
b3172f22 | 490 | case 22050: |
0a1bf553 MB |
491 | adn |= 0x2 << 1; |
492 | break; | |
b3172f22 | 493 | case 32000: |
0a1bf553 MB |
494 | adn |= 0x1 << 1; |
495 | break; | |
b3172f22 GL |
496 | case 44100: |
497 | case 48000: | |
0a1bf553 MB |
498 | break; |
499 | } | |
500 | ||
1e97f50b MB |
501 | snd_soc_write(codec, WM8974_IFACE, iface); |
502 | snd_soc_write(codec, WM8974_ADD, adn); | |
0a1bf553 MB |
503 | return 0; |
504 | } | |
505 | ||
506 | static int wm8974_mute(struct snd_soc_dai *dai, int mute) | |
507 | { | |
508 | struct snd_soc_codec *codec = dai->codec; | |
1e97f50b | 509 | u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf; |
0a1bf553 | 510 | |
1a55b3f6 | 511 | if (mute) |
1e97f50b | 512 | snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40); |
0a1bf553 | 513 | else |
1e97f50b | 514 | snd_soc_write(codec, WM8974_DAC, mute_reg); |
0a1bf553 MB |
515 | return 0; |
516 | } | |
517 | ||
518 | /* liam need to make this lower power with dapm */ | |
519 | static int wm8974_set_bias_level(struct snd_soc_codec *codec, | |
520 | enum snd_soc_bias_level level) | |
521 | { | |
1e97f50b | 522 | u16 power1 = snd_soc_read(codec, WM8974_POWER1) & ~0x3; |
df1ef7a3 | 523 | |
0a1bf553 MB |
524 | switch (level) { |
525 | case SND_SOC_BIAS_ON: | |
0a1bf553 | 526 | case SND_SOC_BIAS_PREPARE: |
df1ef7a3 | 527 | power1 |= 0x1; /* VMID 50k */ |
1e97f50b | 528 | snd_soc_write(codec, WM8974_POWER1, power1); |
0a1bf553 | 529 | break; |
df1ef7a3 | 530 | |
0a1bf553 | 531 | case SND_SOC_BIAS_STANDBY: |
df1ef7a3 MB |
532 | power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN; |
533 | ||
534 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
535 | /* Initial cap charge at VMID 5k */ | |
1e97f50b | 536 | snd_soc_write(codec, WM8974_POWER1, power1 | 0x3); |
df1ef7a3 MB |
537 | mdelay(100); |
538 | } | |
539 | ||
540 | power1 |= 0x2; /* VMID 500k */ | |
1e97f50b | 541 | snd_soc_write(codec, WM8974_POWER1, power1); |
0a1bf553 | 542 | break; |
df1ef7a3 | 543 | |
0a1bf553 | 544 | case SND_SOC_BIAS_OFF: |
1e97f50b MB |
545 | snd_soc_write(codec, WM8974_POWER1, 0); |
546 | snd_soc_write(codec, WM8974_POWER2, 0); | |
547 | snd_soc_write(codec, WM8974_POWER3, 0); | |
0a1bf553 MB |
548 | break; |
549 | } | |
df1ef7a3 | 550 | |
0a1bf553 MB |
551 | codec->bias_level = level; |
552 | return 0; | |
553 | } | |
554 | ||
1a55b3f6 | 555 | #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000) |
0a1bf553 MB |
556 | |
557 | #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
558 | SNDRV_PCM_FMTBIT_S24_LE) | |
559 | ||
560 | static struct snd_soc_dai_ops wm8974_ops = { | |
561 | .hw_params = wm8974_pcm_hw_params, | |
562 | .digital_mute = wm8974_mute, | |
563 | .set_fmt = wm8974_set_dai_fmt, | |
564 | .set_clkdiv = wm8974_set_dai_clkdiv, | |
565 | .set_pll = wm8974_set_dai_pll, | |
566 | }; | |
567 | ||
568 | struct snd_soc_dai wm8974_dai = { | |
569 | .name = "WM8974 HiFi", | |
570 | .playback = { | |
571 | .stream_name = "Playback", | |
572 | .channels_min = 1, | |
33d81af4 | 573 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
574 | .rates = WM8974_RATES, |
575 | .formats = WM8974_FORMATS,}, | |
576 | .capture = { | |
577 | .stream_name = "Capture", | |
578 | .channels_min = 1, | |
33d81af4 | 579 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
580 | .rates = WM8974_RATES, |
581 | .formats = WM8974_FORMATS,}, | |
582 | .ops = &wm8974_ops, | |
cb11d39e | 583 | .symmetric_rates = 1, |
0a1bf553 MB |
584 | }; |
585 | EXPORT_SYMBOL_GPL(wm8974_dai); | |
586 | ||
587 | static int wm8974_suspend(struct platform_device *pdev, pm_message_t state) | |
588 | { | |
589 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
590 | struct snd_soc_codec *codec = socdev->card->codec; | |
591 | ||
592 | wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
593 | return 0; | |
594 | } | |
595 | ||
596 | static int wm8974_resume(struct platform_device *pdev) | |
597 | { | |
598 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
599 | struct snd_soc_codec *codec = socdev->card->codec; | |
600 | int i; | |
601 | u8 data[2]; | |
602 | u16 *cache = codec->reg_cache; | |
603 | ||
604 | /* Sync reg_cache with the hardware */ | |
605 | for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { | |
606 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
607 | data[1] = cache[i] & 0x00ff; | |
608 | codec->hw_write(codec->control_data, data, 2); | |
609 | } | |
610 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
611 | wm8974_set_bias_level(codec, codec->suspend_bias_level); | |
612 | return 0; | |
613 | } | |
614 | ||
4fcbbb67 | 615 | static int wm8974_probe(struct platform_device *pdev) |
0a1bf553 | 616 | { |
4fcbbb67 MB |
617 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
618 | struct snd_soc_codec *codec; | |
0a1bf553 MB |
619 | int ret = 0; |
620 | ||
4fcbbb67 MB |
621 | if (wm8974_codec == NULL) { |
622 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
623 | return -ENODEV; | |
624 | } | |
0a1bf553 | 625 | |
4fcbbb67 MB |
626 | socdev->card->codec = wm8974_codec; |
627 | codec = wm8974_codec; | |
0a1bf553 MB |
628 | |
629 | /* register pcms */ | |
630 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
1a55b3f6 | 631 | if (ret < 0) { |
4fcbbb67 | 632 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); |
0a1bf553 MB |
633 | goto pcm_err; |
634 | } | |
635 | ||
4fcbbb67 MB |
636 | snd_soc_add_controls(codec, wm8974_snd_controls, |
637 | ARRAY_SIZE(wm8974_snd_controls)); | |
0a1bf553 | 638 | wm8974_add_widgets(codec); |
4fcbbb67 | 639 | |
0a1bf553 MB |
640 | return ret; |
641 | ||
0a1bf553 | 642 | pcm_err: |
0a1bf553 MB |
643 | return ret; |
644 | } | |
645 | ||
4fcbbb67 MB |
646 | /* power down chip */ |
647 | static int wm8974_remove(struct platform_device *pdev) | |
648 | { | |
649 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
0a1bf553 | 650 | |
4fcbbb67 MB |
651 | snd_soc_free_pcms(socdev); |
652 | snd_soc_dapm_free(socdev); | |
0a1bf553 | 653 | |
4fcbbb67 MB |
654 | return 0; |
655 | } | |
0a1bf553 | 656 | |
4fcbbb67 MB |
657 | struct snd_soc_codec_device soc_codec_dev_wm8974 = { |
658 | .probe = wm8974_probe, | |
659 | .remove = wm8974_remove, | |
660 | .suspend = wm8974_suspend, | |
661 | .resume = wm8974_resume, | |
662 | }; | |
663 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); | |
0a1bf553 | 664 | |
4fcbbb67 | 665 | static __devinit int wm8974_register(struct wm8974_priv *wm8974) |
0a1bf553 | 666 | { |
0a1bf553 | 667 | int ret; |
4fcbbb67 | 668 | struct snd_soc_codec *codec = &wm8974->codec; |
0a1bf553 | 669 | |
4fcbbb67 MB |
670 | if (wm8974_codec) { |
671 | dev_err(codec->dev, "Another WM8974 is registered\n"); | |
672 | return -EINVAL; | |
673 | } | |
0a1bf553 | 674 | |
4fcbbb67 MB |
675 | mutex_init(&codec->mutex); |
676 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
677 | INIT_LIST_HEAD(&codec->dapm_paths); | |
0a1bf553 | 678 | |
4fcbbb67 MB |
679 | codec->private_data = wm8974; |
680 | codec->name = "WM8974"; | |
681 | codec->owner = THIS_MODULE; | |
4fcbbb67 MB |
682 | codec->bias_level = SND_SOC_BIAS_OFF; |
683 | codec->set_bias_level = wm8974_set_bias_level; | |
684 | codec->dai = &wm8974_dai; | |
685 | codec->num_dai = 1; | |
686 | codec->reg_cache_size = WM8974_CACHEREGNUM; | |
687 | codec->reg_cache = &wm8974->reg_cache; | |
0a1bf553 | 688 | |
1e97f50b MB |
689 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C); |
690 | if (ret < 0) { | |
691 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
692 | goto err; | |
693 | } | |
694 | ||
4fcbbb67 MB |
695 | memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg)); |
696 | ||
697 | ret = wm8974_reset(codec); | |
0a1bf553 | 698 | if (ret < 0) { |
4fcbbb67 | 699 | dev_err(codec->dev, "Failed to issue reset\n"); |
1e97f50b | 700 | goto err; |
0a1bf553 MB |
701 | } |
702 | ||
4fcbbb67 MB |
703 | wm8974_dai.dev = codec->dev; |
704 | ||
705 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
706 | ||
707 | wm8974_codec = codec; | |
708 | ||
709 | ret = snd_soc_register_codec(codec); | |
710 | if (ret != 0) { | |
711 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
1e97f50b | 712 | goto err; |
0a1bf553 | 713 | } |
0a1bf553 | 714 | |
4fcbbb67 MB |
715 | ret = snd_soc_register_dai(&wm8974_dai); |
716 | if (ret != 0) { | |
717 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
1e97f50b | 718 | goto err_codec; |
4fcbbb67 | 719 | } |
0a1bf553 | 720 | |
0a1bf553 | 721 | return 0; |
1e97f50b MB |
722 | |
723 | err_codec: | |
724 | snd_soc_unregister_codec(codec); | |
725 | err: | |
726 | kfree(wm8974); | |
727 | return ret; | |
0a1bf553 MB |
728 | } |
729 | ||
4fcbbb67 | 730 | static __devexit void wm8974_unregister(struct wm8974_priv *wm8974) |
0a1bf553 | 731 | { |
4fcbbb67 MB |
732 | wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF); |
733 | snd_soc_unregister_dai(&wm8974_dai); | |
734 | snd_soc_unregister_codec(&wm8974->codec); | |
735 | kfree(wm8974); | |
736 | wm8974_codec = NULL; | |
0a1bf553 MB |
737 | } |
738 | ||
4fcbbb67 MB |
739 | static __devinit int wm8974_i2c_probe(struct i2c_client *i2c, |
740 | const struct i2c_device_id *id) | |
0a1bf553 | 741 | { |
4fcbbb67 | 742 | struct wm8974_priv *wm8974; |
0a1bf553 | 743 | struct snd_soc_codec *codec; |
0a1bf553 | 744 | |
4fcbbb67 MB |
745 | wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL); |
746 | if (wm8974 == NULL) | |
0a1bf553 MB |
747 | return -ENOMEM; |
748 | ||
4fcbbb67 MB |
749 | codec = &wm8974->codec; |
750 | codec->hw_write = (hw_write_t)i2c_master_send; | |
0a1bf553 | 751 | |
4fcbbb67 MB |
752 | i2c_set_clientdata(i2c, wm8974); |
753 | codec->control_data = i2c; | |
0a1bf553 | 754 | |
4fcbbb67 | 755 | codec->dev = &i2c->dev; |
0a1bf553 | 756 | |
4fcbbb67 MB |
757 | return wm8974_register(wm8974); |
758 | } | |
0a1bf553 | 759 | |
4fcbbb67 MB |
760 | static __devexit int wm8974_i2c_remove(struct i2c_client *client) |
761 | { | |
762 | struct wm8974_priv *wm8974 = i2c_get_clientdata(client); | |
763 | wm8974_unregister(wm8974); | |
0a1bf553 MB |
764 | return 0; |
765 | } | |
766 | ||
4fcbbb67 MB |
767 | static const struct i2c_device_id wm8974_i2c_id[] = { |
768 | { "wm8974", 0 }, | |
769 | { } | |
770 | }; | |
771 | MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id); | |
772 | ||
773 | static struct i2c_driver wm8974_i2c_driver = { | |
774 | .driver = { | |
8b83a193 | 775 | .name = "WM8974", |
4fcbbb67 MB |
776 | .owner = THIS_MODULE, |
777 | }, | |
778 | .probe = wm8974_i2c_probe, | |
779 | .remove = __devexit_p(wm8974_i2c_remove), | |
780 | .id_table = wm8974_i2c_id, | |
0a1bf553 | 781 | }; |
0a1bf553 MB |
782 | |
783 | static int __init wm8974_modinit(void) | |
784 | { | |
4fcbbb67 | 785 | return i2c_add_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
786 | } |
787 | module_init(wm8974_modinit); | |
788 | ||
789 | static void __exit wm8974_exit(void) | |
790 | { | |
4fcbbb67 | 791 | i2c_del_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
792 | } |
793 | module_exit(wm8974_exit); | |
794 | ||
795 | MODULE_DESCRIPTION("ASoC WM8974 driver"); | |
796 | MODULE_AUTHOR("Liam Girdwood"); | |
797 | MODULE_LICENSE("GPL"); |