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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> | |
0a1bf553 MB |
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> | |
5a0e3ad6 | 21 | #include <linux/slab.h> |
0a1bf553 MB |
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] = { |
1a55b3f6 MB |
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, | |
0a1bf553 MB |
48 | }; |
49 | ||
df1ef7a3 | 50 | #define WM8974_POWER1_BIASEN 0x08 |
48c03ce7 | 51 | #define WM8974_POWER1_BUFIOEN 0x04 |
df1ef7a3 | 52 | |
4fcbbb67 MB |
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 | ||
8a123ee2 MB |
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 | ||
a5f8d2f1 MB |
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), |
b2c3e923 GL |
174 | |
175 | /* DAC / ADC oversampling */ | |
176 | SOC_SINGLE("DAC 128x Oversampling Switch", WM8974_DAC, 8, 1, 0), | |
177 | SOC_SINGLE("ADC 128x Oversampling Switch", WM8974_ADC, 8, 1, 0), | |
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178 | }; |
179 | ||
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180 | /* Speaker Output Mixer */ |
181 | static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = { | |
182 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0), | |
183 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0), | |
759512fb | 184 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 0), |
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185 | }; |
186 | ||
187 | /* Mono Output Mixer */ | |
188 | static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = { | |
189 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0), | |
190 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0), | |
8a123ee2 MB |
191 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0), |
192 | }; | |
193 | ||
194 | /* Boost mixer */ | |
195 | static const struct snd_kcontrol_new wm8974_boost_mixer[] = { | |
196 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0), | |
197 | }; | |
198 | ||
199 | /* Input PGA */ | |
200 | static const struct snd_kcontrol_new wm8974_inpga[] = { | |
201 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0), | |
202 | SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0), | |
203 | SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0), | |
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204 | }; |
205 | ||
206 | /* AUX Input boost vol */ | |
207 | static const struct snd_kcontrol_new wm8974_aux_boost_controls = | |
208 | SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); | |
209 | ||
210 | /* Mic Input boost vol */ | |
211 | static const struct snd_kcontrol_new wm8974_mic_boost_controls = | |
212 | SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); | |
213 | ||
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214 | static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { |
215 | SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, | |
216 | &wm8974_speaker_mixer_controls[0], | |
217 | ARRAY_SIZE(wm8974_speaker_mixer_controls)), | |
218 | SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, | |
219 | &wm8974_mono_mixer_controls[0], | |
220 | ARRAY_SIZE(wm8974_mono_mixer_controls)), | |
221 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), | |
8a123ee2 | 222 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0), |
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223 | SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), |
224 | SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), | |
225 | SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), | |
226 | SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), | |
0a1bf553 | 227 | |
8a123ee2 MB |
228 | SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga, |
229 | ARRAY_SIZE(wm8974_inpga)), | |
230 | SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, | |
231 | wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)), | |
0a1bf553 MB |
232 | |
233 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), | |
234 | ||
235 | SND_SOC_DAPM_INPUT("MICN"), | |
236 | SND_SOC_DAPM_INPUT("MICP"), | |
237 | SND_SOC_DAPM_INPUT("AUX"), | |
238 | SND_SOC_DAPM_OUTPUT("MONOOUT"), | |
239 | SND_SOC_DAPM_OUTPUT("SPKOUTP"), | |
240 | SND_SOC_DAPM_OUTPUT("SPKOUTN"), | |
241 | }; | |
242 | ||
243 | static const struct snd_soc_dapm_route audio_map[] = { | |
244 | /* Mono output mixer */ | |
245 | {"Mono Mixer", "PCM Playback Switch", "DAC"}, | |
246 | {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, | |
247 | {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
248 | ||
249 | /* Speaker output mixer */ | |
250 | {"Speaker Mixer", "PCM Playback Switch", "DAC"}, | |
251 | {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, | |
252 | {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
253 | ||
254 | /* Outputs */ | |
255 | {"Mono Out", NULL, "Mono Mixer"}, | |
256 | {"MONOOUT", NULL, "Mono Out"}, | |
257 | {"SpkN Out", NULL, "Speaker Mixer"}, | |
258 | {"SpkP Out", NULL, "Speaker Mixer"}, | |
259 | {"SPKOUTN", NULL, "SpkN Out"}, | |
260 | {"SPKOUTP", NULL, "SpkP Out"}, | |
261 | ||
262 | /* Boost Mixer */ | |
8a123ee2 MB |
263 | {"ADC", NULL, "Boost Mixer"}, |
264 | {"Boost Mixer", "Aux Switch", "Aux Input"}, | |
265 | {"Boost Mixer", NULL, "Input PGA"}, | |
266 | {"Boost Mixer", NULL, "MICP"}, | |
267 | ||
268 | /* Input PGA */ | |
269 | {"Input PGA", "Aux Switch", "Aux Input"}, | |
270 | {"Input PGA", "MicN Switch", "MICN"}, | |
271 | {"Input PGA", "MicP Switch", "MICP"}, | |
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272 | |
273 | /* Inputs */ | |
8a123ee2 | 274 | {"Aux Input", NULL, "AUX"}, |
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275 | }; |
276 | ||
277 | static int wm8974_add_widgets(struct snd_soc_codec *codec) | |
278 | { | |
279 | snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, | |
280 | ARRAY_SIZE(wm8974_dapm_widgets)); | |
281 | ||
282 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
283 | ||
0a1bf553 MB |
284 | return 0; |
285 | } | |
286 | ||
287 | struct pll_ { | |
c36b2fc7 | 288 | unsigned int pre_div:1; |
0a1bf553 MB |
289 | unsigned int n:4; |
290 | unsigned int k; | |
291 | }; | |
292 | ||
91d0c3ec MB |
293 | /* The size in bits of the pll divide multiplied by 10 |
294 | * to allow rounding later */ | |
295 | #define FIXED_PLL_SIZE ((1 << 24) * 10) | |
296 | ||
c36b2fc7 MB |
297 | static void pll_factors(struct pll_ *pll_div, |
298 | unsigned int target, unsigned int source) | |
91d0c3ec MB |
299 | { |
300 | unsigned long long Kpart; | |
301 | unsigned int K, Ndiv, Nmod; | |
302 | ||
c36b2fc7 MB |
303 | /* There is a fixed divide by 4 in the output path */ |
304 | target *= 4; | |
305 | ||
91d0c3ec MB |
306 | Ndiv = target / source; |
307 | if (Ndiv < 6) { | |
c36b2fc7 MB |
308 | source /= 2; |
309 | pll_div->pre_div = 1; | |
91d0c3ec MB |
310 | Ndiv = target / source; |
311 | } else | |
c36b2fc7 | 312 | pll_div->pre_div = 0; |
91d0c3ec MB |
313 | |
314 | if ((Ndiv < 6) || (Ndiv > 12)) | |
315 | printk(KERN_WARNING | |
8b83a193 | 316 | "WM8974 N value %u outwith recommended range!\n", |
91d0c3ec MB |
317 | Ndiv); |
318 | ||
c36b2fc7 | 319 | pll_div->n = Ndiv; |
91d0c3ec MB |
320 | Nmod = target % source; |
321 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; | |
322 | ||
323 | do_div(Kpart, source); | |
324 | ||
325 | K = Kpart & 0xFFFFFFFF; | |
326 | ||
327 | /* Check if we need to round */ | |
328 | if ((K % 10) >= 5) | |
329 | K += 5; | |
330 | ||
331 | /* Move down to proper range now rounding is done */ | |
332 | K /= 10; | |
333 | ||
c36b2fc7 | 334 | pll_div->k = K; |
91d0c3ec | 335 | } |
0a1bf553 | 336 | |
85488037 MB |
337 | static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, |
338 | int source, unsigned int freq_in, unsigned int freq_out) | |
0a1bf553 MB |
339 | { |
340 | struct snd_soc_codec *codec = codec_dai->codec; | |
c36b2fc7 | 341 | struct pll_ pll_div; |
0a1bf553 MB |
342 | u16 reg; |
343 | ||
1a55b3f6 | 344 | if (freq_in == 0 || freq_out == 0) { |
91d0c3ec | 345 | /* Clock CODEC directly from MCLK */ |
1e97f50b MB |
346 | reg = snd_soc_read(codec, WM8974_CLOCK); |
347 | snd_soc_write(codec, WM8974_CLOCK, reg & 0x0ff); | |
91d0c3ec MB |
348 | |
349 | /* Turn off PLL */ | |
1e97f50b MB |
350 | reg = snd_soc_read(codec, WM8974_POWER1); |
351 | snd_soc_write(codec, WM8974_POWER1, reg & 0x1df); | |
0a1bf553 MB |
352 | return 0; |
353 | } | |
354 | ||
c36b2fc7 | 355 | pll_factors(&pll_div, freq_out, freq_in); |
91d0c3ec | 356 | |
1e97f50b MB |
357 | snd_soc_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n); |
358 | snd_soc_write(codec, WM8974_PLLK1, pll_div.k >> 18); | |
359 | snd_soc_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff); | |
360 | snd_soc_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff); | |
361 | reg = snd_soc_read(codec, WM8974_POWER1); | |
362 | snd_soc_write(codec, WM8974_POWER1, reg | 0x020); | |
1a55b3f6 | 363 | |
91d0c3ec | 364 | /* Run CODEC from PLL instead of MCLK */ |
1e97f50b MB |
365 | reg = snd_soc_read(codec, WM8974_CLOCK); |
366 | snd_soc_write(codec, WM8974_CLOCK, reg | 0x100); | |
91d0c3ec MB |
367 | |
368 | return 0; | |
0a1bf553 MB |
369 | } |
370 | ||
371 | /* | |
372 | * Configure WM8974 clock dividers. | |
373 | */ | |
374 | static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
375 | int div_id, int div) | |
376 | { | |
377 | struct snd_soc_codec *codec = codec_dai->codec; | |
378 | u16 reg; | |
379 | ||
380 | switch (div_id) { | |
381 | case WM8974_OPCLKDIV: | |
1e97f50b MB |
382 | reg = snd_soc_read(codec, WM8974_GPIO) & 0x1cf; |
383 | snd_soc_write(codec, WM8974_GPIO, reg | div); | |
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384 | break; |
385 | case WM8974_MCLKDIV: | |
1e97f50b MB |
386 | reg = snd_soc_read(codec, WM8974_CLOCK) & 0x11f; |
387 | snd_soc_write(codec, WM8974_CLOCK, reg | div); | |
0a1bf553 | 388 | break; |
0a1bf553 | 389 | case WM8974_BCLKDIV: |
1e97f50b MB |
390 | reg = snd_soc_read(codec, WM8974_CLOCK) & 0x1e3; |
391 | snd_soc_write(codec, WM8974_CLOCK, reg | div); | |
0a1bf553 MB |
392 | break; |
393 | default: | |
394 | return -EINVAL; | |
395 | } | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
401 | unsigned int fmt) | |
402 | { | |
403 | struct snd_soc_codec *codec = codec_dai->codec; | |
404 | u16 iface = 0; | |
1e97f50b | 405 | u16 clk = snd_soc_read(codec, WM8974_CLOCK) & 0x1fe; |
0a1bf553 MB |
406 | |
407 | /* set master/slave audio interface */ | |
408 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
409 | case SND_SOC_DAIFMT_CBM_CFM: | |
410 | clk |= 0x0001; | |
411 | break; | |
412 | case SND_SOC_DAIFMT_CBS_CFS: | |
413 | break; | |
414 | default: | |
415 | return -EINVAL; | |
416 | } | |
417 | ||
418 | /* interface format */ | |
419 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
420 | case SND_SOC_DAIFMT_I2S: | |
421 | iface |= 0x0010; | |
422 | break; | |
423 | case SND_SOC_DAIFMT_RIGHT_J: | |
424 | break; | |
425 | case SND_SOC_DAIFMT_LEFT_J: | |
426 | iface |= 0x0008; | |
427 | break; | |
428 | case SND_SOC_DAIFMT_DSP_A: | |
429 | iface |= 0x00018; | |
430 | break; | |
431 | default: | |
432 | return -EINVAL; | |
433 | } | |
434 | ||
435 | /* clock inversion */ | |
436 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
437 | case SND_SOC_DAIFMT_NB_NF: | |
438 | break; | |
439 | case SND_SOC_DAIFMT_IB_IF: | |
440 | iface |= 0x0180; | |
441 | break; | |
442 | case SND_SOC_DAIFMT_IB_NF: | |
443 | iface |= 0x0100; | |
444 | break; | |
445 | case SND_SOC_DAIFMT_NB_IF: | |
446 | iface |= 0x0080; | |
447 | break; | |
448 | default: | |
449 | return -EINVAL; | |
450 | } | |
451 | ||
1e97f50b MB |
452 | snd_soc_write(codec, WM8974_IFACE, iface); |
453 | snd_soc_write(codec, WM8974_CLOCK, clk); | |
0a1bf553 MB |
454 | return 0; |
455 | } | |
456 | ||
457 | static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream, | |
458 | struct snd_pcm_hw_params *params, | |
459 | struct snd_soc_dai *dai) | |
460 | { | |
461 | struct snd_soc_codec *codec = dai->codec; | |
1e97f50b MB |
462 | u16 iface = snd_soc_read(codec, WM8974_IFACE) & 0x19f; |
463 | u16 adn = snd_soc_read(codec, WM8974_ADD) & 0x1f1; | |
0a1bf553 MB |
464 | |
465 | /* bit size */ | |
466 | switch (params_format(params)) { | |
467 | case SNDRV_PCM_FORMAT_S16_LE: | |
468 | break; | |
469 | case SNDRV_PCM_FORMAT_S20_3LE: | |
470 | iface |= 0x0020; | |
471 | break; | |
472 | case SNDRV_PCM_FORMAT_S24_LE: | |
473 | iface |= 0x0040; | |
474 | break; | |
475 | case SNDRV_PCM_FORMAT_S32_LE: | |
476 | iface |= 0x0060; | |
477 | break; | |
478 | } | |
479 | ||
480 | /* filter coefficient */ | |
481 | switch (params_rate(params)) { | |
b3172f22 | 482 | case 8000: |
0a1bf553 MB |
483 | adn |= 0x5 << 1; |
484 | break; | |
b3172f22 | 485 | case 11025: |
0a1bf553 MB |
486 | adn |= 0x4 << 1; |
487 | break; | |
b3172f22 | 488 | case 16000: |
0a1bf553 MB |
489 | adn |= 0x3 << 1; |
490 | break; | |
b3172f22 | 491 | case 22050: |
0a1bf553 MB |
492 | adn |= 0x2 << 1; |
493 | break; | |
b3172f22 | 494 | case 32000: |
0a1bf553 MB |
495 | adn |= 0x1 << 1; |
496 | break; | |
b3172f22 GL |
497 | case 44100: |
498 | case 48000: | |
0a1bf553 MB |
499 | break; |
500 | } | |
501 | ||
1e97f50b MB |
502 | snd_soc_write(codec, WM8974_IFACE, iface); |
503 | snd_soc_write(codec, WM8974_ADD, adn); | |
0a1bf553 MB |
504 | return 0; |
505 | } | |
506 | ||
507 | static int wm8974_mute(struct snd_soc_dai *dai, int mute) | |
508 | { | |
509 | struct snd_soc_codec *codec = dai->codec; | |
1e97f50b | 510 | u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf; |
0a1bf553 | 511 | |
1a55b3f6 | 512 | if (mute) |
1e97f50b | 513 | snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40); |
0a1bf553 | 514 | else |
1e97f50b | 515 | snd_soc_write(codec, WM8974_DAC, mute_reg); |
0a1bf553 MB |
516 | return 0; |
517 | } | |
518 | ||
519 | /* liam need to make this lower power with dapm */ | |
520 | static int wm8974_set_bias_level(struct snd_soc_codec *codec, | |
521 | enum snd_soc_bias_level level) | |
522 | { | |
1e97f50b | 523 | u16 power1 = snd_soc_read(codec, WM8974_POWER1) & ~0x3; |
df1ef7a3 | 524 | |
0a1bf553 MB |
525 | switch (level) { |
526 | case SND_SOC_BIAS_ON: | |
0a1bf553 | 527 | case SND_SOC_BIAS_PREPARE: |
df1ef7a3 | 528 | power1 |= 0x1; /* VMID 50k */ |
1e97f50b | 529 | snd_soc_write(codec, WM8974_POWER1, power1); |
0a1bf553 | 530 | break; |
df1ef7a3 | 531 | |
0a1bf553 | 532 | case SND_SOC_BIAS_STANDBY: |
df1ef7a3 MB |
533 | power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN; |
534 | ||
535 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
536 | /* Initial cap charge at VMID 5k */ | |
1e97f50b | 537 | snd_soc_write(codec, WM8974_POWER1, power1 | 0x3); |
df1ef7a3 MB |
538 | mdelay(100); |
539 | } | |
540 | ||
541 | power1 |= 0x2; /* VMID 500k */ | |
1e97f50b | 542 | snd_soc_write(codec, WM8974_POWER1, power1); |
0a1bf553 | 543 | break; |
df1ef7a3 | 544 | |
0a1bf553 | 545 | case SND_SOC_BIAS_OFF: |
1e97f50b MB |
546 | snd_soc_write(codec, WM8974_POWER1, 0); |
547 | snd_soc_write(codec, WM8974_POWER2, 0); | |
548 | snd_soc_write(codec, WM8974_POWER3, 0); | |
0a1bf553 MB |
549 | break; |
550 | } | |
df1ef7a3 | 551 | |
0a1bf553 MB |
552 | codec->bias_level = level; |
553 | return 0; | |
554 | } | |
555 | ||
1a55b3f6 | 556 | #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000) |
0a1bf553 MB |
557 | |
558 | #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
559 | SNDRV_PCM_FMTBIT_S24_LE) | |
560 | ||
561 | static struct snd_soc_dai_ops wm8974_ops = { | |
562 | .hw_params = wm8974_pcm_hw_params, | |
563 | .digital_mute = wm8974_mute, | |
564 | .set_fmt = wm8974_set_dai_fmt, | |
565 | .set_clkdiv = wm8974_set_dai_clkdiv, | |
566 | .set_pll = wm8974_set_dai_pll, | |
567 | }; | |
568 | ||
569 | struct snd_soc_dai wm8974_dai = { | |
570 | .name = "WM8974 HiFi", | |
571 | .playback = { | |
572 | .stream_name = "Playback", | |
573 | .channels_min = 1, | |
33d81af4 | 574 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
575 | .rates = WM8974_RATES, |
576 | .formats = WM8974_FORMATS,}, | |
577 | .capture = { | |
578 | .stream_name = "Capture", | |
579 | .channels_min = 1, | |
33d81af4 | 580 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
581 | .rates = WM8974_RATES, |
582 | .formats = WM8974_FORMATS,}, | |
583 | .ops = &wm8974_ops, | |
cb11d39e | 584 | .symmetric_rates = 1, |
0a1bf553 MB |
585 | }; |
586 | EXPORT_SYMBOL_GPL(wm8974_dai); | |
587 | ||
588 | static int wm8974_suspend(struct platform_device *pdev, pm_message_t state) | |
589 | { | |
590 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
591 | struct snd_soc_codec *codec = socdev->card->codec; | |
592 | ||
593 | wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
594 | return 0; | |
595 | } | |
596 | ||
597 | static int wm8974_resume(struct platform_device *pdev) | |
598 | { | |
599 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
600 | struct snd_soc_codec *codec = socdev->card->codec; | |
601 | int i; | |
602 | u8 data[2]; | |
603 | u16 *cache = codec->reg_cache; | |
604 | ||
605 | /* Sync reg_cache with the hardware */ | |
606 | for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { | |
607 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
608 | data[1] = cache[i] & 0x00ff; | |
609 | codec->hw_write(codec->control_data, data, 2); | |
610 | } | |
611 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
29e189c2 | 612 | |
0a1bf553 MB |
613 | return 0; |
614 | } | |
615 | ||
4fcbbb67 | 616 | static int wm8974_probe(struct platform_device *pdev) |
0a1bf553 | 617 | { |
4fcbbb67 MB |
618 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
619 | struct snd_soc_codec *codec; | |
0a1bf553 MB |
620 | int ret = 0; |
621 | ||
4fcbbb67 MB |
622 | if (wm8974_codec == NULL) { |
623 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
624 | return -ENODEV; | |
625 | } | |
0a1bf553 | 626 | |
4fcbbb67 MB |
627 | socdev->card->codec = wm8974_codec; |
628 | codec = wm8974_codec; | |
0a1bf553 MB |
629 | |
630 | /* register pcms */ | |
631 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
1a55b3f6 | 632 | if (ret < 0) { |
4fcbbb67 | 633 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); |
0a1bf553 MB |
634 | goto pcm_err; |
635 | } | |
636 | ||
4fcbbb67 MB |
637 | snd_soc_add_controls(codec, wm8974_snd_controls, |
638 | ARRAY_SIZE(wm8974_snd_controls)); | |
0a1bf553 | 639 | wm8974_add_widgets(codec); |
4fcbbb67 | 640 | |
0a1bf553 MB |
641 | return ret; |
642 | ||
0a1bf553 | 643 | pcm_err: |
0a1bf553 MB |
644 | return ret; |
645 | } | |
646 | ||
4fcbbb67 MB |
647 | /* power down chip */ |
648 | static int wm8974_remove(struct platform_device *pdev) | |
649 | { | |
650 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
0a1bf553 | 651 | |
4fcbbb67 MB |
652 | snd_soc_free_pcms(socdev); |
653 | snd_soc_dapm_free(socdev); | |
0a1bf553 | 654 | |
4fcbbb67 MB |
655 | return 0; |
656 | } | |
0a1bf553 | 657 | |
4fcbbb67 MB |
658 | struct snd_soc_codec_device soc_codec_dev_wm8974 = { |
659 | .probe = wm8974_probe, | |
660 | .remove = wm8974_remove, | |
661 | .suspend = wm8974_suspend, | |
662 | .resume = wm8974_resume, | |
663 | }; | |
664 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); | |
0a1bf553 | 665 | |
4fcbbb67 | 666 | static __devinit int wm8974_register(struct wm8974_priv *wm8974) |
0a1bf553 | 667 | { |
0a1bf553 | 668 | int ret; |
4fcbbb67 | 669 | struct snd_soc_codec *codec = &wm8974->codec; |
0a1bf553 | 670 | |
4fcbbb67 MB |
671 | if (wm8974_codec) { |
672 | dev_err(codec->dev, "Another WM8974 is registered\n"); | |
4eaac505 AL |
673 | ret = -EINVAL; |
674 | goto err; | |
4fcbbb67 | 675 | } |
0a1bf553 | 676 | |
4fcbbb67 MB |
677 | mutex_init(&codec->mutex); |
678 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
679 | INIT_LIST_HEAD(&codec->dapm_paths); | |
0a1bf553 | 680 | |
b2c812e2 | 681 | snd_soc_codec_set_drvdata(codec, wm8974); |
4fcbbb67 MB |
682 | codec->name = "WM8974"; |
683 | codec->owner = THIS_MODULE; | |
4fcbbb67 MB |
684 | codec->bias_level = SND_SOC_BIAS_OFF; |
685 | codec->set_bias_level = wm8974_set_bias_level; | |
686 | codec->dai = &wm8974_dai; | |
687 | codec->num_dai = 1; | |
688 | codec->reg_cache_size = WM8974_CACHEREGNUM; | |
689 | codec->reg_cache = &wm8974->reg_cache; | |
0a1bf553 | 690 | |
1e97f50b MB |
691 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C); |
692 | if (ret < 0) { | |
693 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
694 | goto err; | |
695 | } | |
696 | ||
4fcbbb67 MB |
697 | memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg)); |
698 | ||
699 | ret = wm8974_reset(codec); | |
0a1bf553 | 700 | if (ret < 0) { |
4fcbbb67 | 701 | dev_err(codec->dev, "Failed to issue reset\n"); |
1e97f50b | 702 | goto err; |
0a1bf553 MB |
703 | } |
704 | ||
4fcbbb67 MB |
705 | wm8974_dai.dev = codec->dev; |
706 | ||
707 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
708 | ||
709 | wm8974_codec = codec; | |
710 | ||
711 | ret = snd_soc_register_codec(codec); | |
712 | if (ret != 0) { | |
713 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
1e97f50b | 714 | goto err; |
0a1bf553 | 715 | } |
0a1bf553 | 716 | |
4fcbbb67 MB |
717 | ret = snd_soc_register_dai(&wm8974_dai); |
718 | if (ret != 0) { | |
719 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
1e97f50b | 720 | goto err_codec; |
4fcbbb67 | 721 | } |
0a1bf553 | 722 | |
0a1bf553 | 723 | return 0; |
1e97f50b MB |
724 | |
725 | err_codec: | |
726 | snd_soc_unregister_codec(codec); | |
727 | err: | |
728 | kfree(wm8974); | |
729 | return ret; | |
0a1bf553 MB |
730 | } |
731 | ||
4fcbbb67 | 732 | static __devexit void wm8974_unregister(struct wm8974_priv *wm8974) |
0a1bf553 | 733 | { |
4fcbbb67 MB |
734 | wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF); |
735 | snd_soc_unregister_dai(&wm8974_dai); | |
736 | snd_soc_unregister_codec(&wm8974->codec); | |
737 | kfree(wm8974); | |
738 | wm8974_codec = NULL; | |
0a1bf553 MB |
739 | } |
740 | ||
4fcbbb67 MB |
741 | static __devinit int wm8974_i2c_probe(struct i2c_client *i2c, |
742 | const struct i2c_device_id *id) | |
0a1bf553 | 743 | { |
4fcbbb67 | 744 | struct wm8974_priv *wm8974; |
0a1bf553 | 745 | struct snd_soc_codec *codec; |
0a1bf553 | 746 | |
4fcbbb67 MB |
747 | wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL); |
748 | if (wm8974 == NULL) | |
0a1bf553 MB |
749 | return -ENOMEM; |
750 | ||
4fcbbb67 MB |
751 | codec = &wm8974->codec; |
752 | codec->hw_write = (hw_write_t)i2c_master_send; | |
0a1bf553 | 753 | |
4fcbbb67 MB |
754 | i2c_set_clientdata(i2c, wm8974); |
755 | codec->control_data = i2c; | |
0a1bf553 | 756 | |
4fcbbb67 | 757 | codec->dev = &i2c->dev; |
0a1bf553 | 758 | |
4fcbbb67 MB |
759 | return wm8974_register(wm8974); |
760 | } | |
0a1bf553 | 761 | |
4fcbbb67 MB |
762 | static __devexit int wm8974_i2c_remove(struct i2c_client *client) |
763 | { | |
764 | struct wm8974_priv *wm8974 = i2c_get_clientdata(client); | |
765 | wm8974_unregister(wm8974); | |
0a1bf553 MB |
766 | return 0; |
767 | } | |
768 | ||
4fcbbb67 MB |
769 | static const struct i2c_device_id wm8974_i2c_id[] = { |
770 | { "wm8974", 0 }, | |
771 | { } | |
772 | }; | |
773 | MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id); | |
774 | ||
775 | static struct i2c_driver wm8974_i2c_driver = { | |
776 | .driver = { | |
8b83a193 | 777 | .name = "WM8974", |
4fcbbb67 MB |
778 | .owner = THIS_MODULE, |
779 | }, | |
780 | .probe = wm8974_i2c_probe, | |
781 | .remove = __devexit_p(wm8974_i2c_remove), | |
782 | .id_table = wm8974_i2c_id, | |
0a1bf553 | 783 | }; |
0a1bf553 MB |
784 | |
785 | static int __init wm8974_modinit(void) | |
786 | { | |
4fcbbb67 | 787 | return i2c_add_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
788 | } |
789 | module_init(wm8974_modinit); | |
790 | ||
791 | static void __exit wm8974_exit(void) | |
792 | { | |
4fcbbb67 | 793 | i2c_del_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
794 | } |
795 | module_exit(wm8974_exit); | |
796 | ||
797 | MODULE_DESCRIPTION("ASoC WM8974 driver"); | |
798 | MODULE_AUTHOR("Liam Girdwood"); | |
799 | MODULE_LICENSE("GPL"); |