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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> | |
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] = { |
1a55b3f6 MB |
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 MB |
49 | #define WM8974_POWER1_BIASEN 0x08 |
50 | #define WM8974_POWER1_BUFIOEN 0x10 | |
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 | ||
8a123ee2 MB |
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), |
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173 | }; |
174 | ||
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175 | /* Speaker Output Mixer */ |
176 | static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = { | |
177 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0), | |
178 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0), | |
179 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 1), | |
180 | }; | |
181 | ||
182 | /* Mono Output Mixer */ | |
183 | static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = { | |
184 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0), | |
185 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0), | |
8a123ee2 MB |
186 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0), |
187 | }; | |
188 | ||
189 | /* Boost mixer */ | |
190 | static const struct snd_kcontrol_new wm8974_boost_mixer[] = { | |
191 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0), | |
192 | }; | |
193 | ||
194 | /* Input PGA */ | |
195 | static const struct snd_kcontrol_new wm8974_inpga[] = { | |
196 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0), | |
197 | SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0), | |
198 | SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0), | |
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199 | }; |
200 | ||
201 | /* AUX Input boost vol */ | |
202 | static const struct snd_kcontrol_new wm8974_aux_boost_controls = | |
203 | SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); | |
204 | ||
205 | /* Mic Input boost vol */ | |
206 | static const struct snd_kcontrol_new wm8974_mic_boost_controls = | |
207 | SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); | |
208 | ||
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209 | static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { |
210 | SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, | |
211 | &wm8974_speaker_mixer_controls[0], | |
212 | ARRAY_SIZE(wm8974_speaker_mixer_controls)), | |
213 | SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, | |
214 | &wm8974_mono_mixer_controls[0], | |
215 | ARRAY_SIZE(wm8974_mono_mixer_controls)), | |
216 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), | |
8a123ee2 | 217 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0), |
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218 | SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), |
219 | SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), | |
220 | SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), | |
221 | SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), | |
0a1bf553 | 222 | |
8a123ee2 MB |
223 | SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga, |
224 | ARRAY_SIZE(wm8974_inpga)), | |
225 | SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, | |
226 | wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)), | |
0a1bf553 MB |
227 | |
228 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), | |
229 | ||
230 | SND_SOC_DAPM_INPUT("MICN"), | |
231 | SND_SOC_DAPM_INPUT("MICP"), | |
232 | SND_SOC_DAPM_INPUT("AUX"), | |
233 | SND_SOC_DAPM_OUTPUT("MONOOUT"), | |
234 | SND_SOC_DAPM_OUTPUT("SPKOUTP"), | |
235 | SND_SOC_DAPM_OUTPUT("SPKOUTN"), | |
236 | }; | |
237 | ||
238 | static const struct snd_soc_dapm_route audio_map[] = { | |
239 | /* Mono output mixer */ | |
240 | {"Mono Mixer", "PCM Playback Switch", "DAC"}, | |
241 | {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, | |
242 | {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
243 | ||
244 | /* Speaker output mixer */ | |
245 | {"Speaker Mixer", "PCM Playback Switch", "DAC"}, | |
246 | {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, | |
247 | {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
248 | ||
249 | /* Outputs */ | |
250 | {"Mono Out", NULL, "Mono Mixer"}, | |
251 | {"MONOOUT", NULL, "Mono Out"}, | |
252 | {"SpkN Out", NULL, "Speaker Mixer"}, | |
253 | {"SpkP Out", NULL, "Speaker Mixer"}, | |
254 | {"SPKOUTN", NULL, "SpkN Out"}, | |
255 | {"SPKOUTP", NULL, "SpkP Out"}, | |
256 | ||
257 | /* Boost Mixer */ | |
8a123ee2 MB |
258 | {"ADC", NULL, "Boost Mixer"}, |
259 | {"Boost Mixer", "Aux Switch", "Aux Input"}, | |
260 | {"Boost Mixer", NULL, "Input PGA"}, | |
261 | {"Boost Mixer", NULL, "MICP"}, | |
262 | ||
263 | /* Input PGA */ | |
264 | {"Input PGA", "Aux Switch", "Aux Input"}, | |
265 | {"Input PGA", "MicN Switch", "MICN"}, | |
266 | {"Input PGA", "MicP Switch", "MICP"}, | |
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267 | |
268 | /* Inputs */ | |
8a123ee2 | 269 | {"Aux Input", NULL, "AUX"}, |
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270 | }; |
271 | ||
272 | static int wm8974_add_widgets(struct snd_soc_codec *codec) | |
273 | { | |
274 | snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, | |
275 | ARRAY_SIZE(wm8974_dapm_widgets)); | |
276 | ||
277 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
278 | ||
0a1bf553 MB |
279 | return 0; |
280 | } | |
281 | ||
282 | struct pll_ { | |
c36b2fc7 | 283 | unsigned int pre_div:1; |
0a1bf553 MB |
284 | unsigned int n:4; |
285 | unsigned int k; | |
286 | }; | |
287 | ||
91d0c3ec MB |
288 | /* The size in bits of the pll divide multiplied by 10 |
289 | * to allow rounding later */ | |
290 | #define FIXED_PLL_SIZE ((1 << 24) * 10) | |
291 | ||
c36b2fc7 MB |
292 | static void pll_factors(struct pll_ *pll_div, |
293 | unsigned int target, unsigned int source) | |
91d0c3ec MB |
294 | { |
295 | unsigned long long Kpart; | |
296 | unsigned int K, Ndiv, Nmod; | |
297 | ||
c36b2fc7 MB |
298 | /* There is a fixed divide by 4 in the output path */ |
299 | target *= 4; | |
300 | ||
91d0c3ec MB |
301 | Ndiv = target / source; |
302 | if (Ndiv < 6) { | |
c36b2fc7 MB |
303 | source /= 2; |
304 | pll_div->pre_div = 1; | |
91d0c3ec MB |
305 | Ndiv = target / source; |
306 | } else | |
c36b2fc7 | 307 | pll_div->pre_div = 0; |
91d0c3ec MB |
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 | ||
c36b2fc7 | 314 | pll_div->n = Ndiv; |
91d0c3ec MB |
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 | ||
c36b2fc7 | 329 | pll_div->k = K; |
91d0c3ec | 330 | } |
0a1bf553 | 331 | |
85488037 MB |
332 | static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, |
333 | int source, unsigned int freq_in, unsigned int freq_out) | |
0a1bf553 MB |
334 | { |
335 | struct snd_soc_codec *codec = codec_dai->codec; | |
c36b2fc7 | 336 | struct pll_ pll_div; |
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337 | u16 reg; |
338 | ||
1a55b3f6 | 339 | if (freq_in == 0 || freq_out == 0) { |
91d0c3ec | 340 | /* Clock CODEC directly from MCLK */ |
1e97f50b MB |
341 | reg = snd_soc_read(codec, WM8974_CLOCK); |
342 | snd_soc_write(codec, WM8974_CLOCK, reg & 0x0ff); | |
91d0c3ec MB |
343 | |
344 | /* Turn off PLL */ | |
1e97f50b MB |
345 | reg = snd_soc_read(codec, WM8974_POWER1); |
346 | snd_soc_write(codec, WM8974_POWER1, reg & 0x1df); | |
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347 | return 0; |
348 | } | |
349 | ||
c36b2fc7 | 350 | pll_factors(&pll_div, freq_out, freq_in); |
91d0c3ec | 351 | |
1e97f50b MB |
352 | snd_soc_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n); |
353 | snd_soc_write(codec, WM8974_PLLK1, pll_div.k >> 18); | |
354 | snd_soc_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff); | |
355 | snd_soc_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff); | |
356 | reg = snd_soc_read(codec, WM8974_POWER1); | |
357 | snd_soc_write(codec, WM8974_POWER1, reg | 0x020); | |
1a55b3f6 | 358 | |
91d0c3ec | 359 | /* Run CODEC from PLL instead of MCLK */ |
1e97f50b MB |
360 | reg = snd_soc_read(codec, WM8974_CLOCK); |
361 | snd_soc_write(codec, WM8974_CLOCK, reg | 0x100); | |
91d0c3ec MB |
362 | |
363 | return 0; | |
0a1bf553 MB |
364 | } |
365 | ||
366 | /* | |
367 | * Configure WM8974 clock dividers. | |
368 | */ | |
369 | static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
370 | int div_id, int div) | |
371 | { | |
372 | struct snd_soc_codec *codec = codec_dai->codec; | |
373 | u16 reg; | |
374 | ||
375 | switch (div_id) { | |
376 | case WM8974_OPCLKDIV: | |
1e97f50b MB |
377 | reg = snd_soc_read(codec, WM8974_GPIO) & 0x1cf; |
378 | snd_soc_write(codec, WM8974_GPIO, reg | div); | |
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379 | break; |
380 | case WM8974_MCLKDIV: | |
1e97f50b MB |
381 | reg = snd_soc_read(codec, WM8974_CLOCK) & 0x11f; |
382 | snd_soc_write(codec, WM8974_CLOCK, reg | div); | |
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383 | break; |
384 | case WM8974_ADCCLK: | |
1e97f50b MB |
385 | reg = snd_soc_read(codec, WM8974_ADC) & 0x1f7; |
386 | snd_soc_write(codec, WM8974_ADC, reg | div); | |
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387 | break; |
388 | case WM8974_DACCLK: | |
1e97f50b MB |
389 | reg = snd_soc_read(codec, WM8974_DAC) & 0x1f7; |
390 | snd_soc_write(codec, WM8974_DAC, reg | div); | |
0a1bf553 MB |
391 | break; |
392 | case WM8974_BCLKDIV: | |
1e97f50b MB |
393 | reg = snd_soc_read(codec, WM8974_CLOCK) & 0x1e3; |
394 | snd_soc_write(codec, WM8974_CLOCK, reg | div); | |
0a1bf553 MB |
395 | break; |
396 | default: | |
397 | return -EINVAL; | |
398 | } | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
404 | unsigned int fmt) | |
405 | { | |
406 | struct snd_soc_codec *codec = codec_dai->codec; | |
407 | u16 iface = 0; | |
1e97f50b | 408 | u16 clk = snd_soc_read(codec, WM8974_CLOCK) & 0x1fe; |
0a1bf553 MB |
409 | |
410 | /* set master/slave audio interface */ | |
411 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
412 | case SND_SOC_DAIFMT_CBM_CFM: | |
413 | clk |= 0x0001; | |
414 | break; | |
415 | case SND_SOC_DAIFMT_CBS_CFS: | |
416 | break; | |
417 | default: | |
418 | return -EINVAL; | |
419 | } | |
420 | ||
421 | /* interface format */ | |
422 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
423 | case SND_SOC_DAIFMT_I2S: | |
424 | iface |= 0x0010; | |
425 | break; | |
426 | case SND_SOC_DAIFMT_RIGHT_J: | |
427 | break; | |
428 | case SND_SOC_DAIFMT_LEFT_J: | |
429 | iface |= 0x0008; | |
430 | break; | |
431 | case SND_SOC_DAIFMT_DSP_A: | |
432 | iface |= 0x00018; | |
433 | break; | |
434 | default: | |
435 | return -EINVAL; | |
436 | } | |
437 | ||
438 | /* clock inversion */ | |
439 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
440 | case SND_SOC_DAIFMT_NB_NF: | |
441 | break; | |
442 | case SND_SOC_DAIFMT_IB_IF: | |
443 | iface |= 0x0180; | |
444 | break; | |
445 | case SND_SOC_DAIFMT_IB_NF: | |
446 | iface |= 0x0100; | |
447 | break; | |
448 | case SND_SOC_DAIFMT_NB_IF: | |
449 | iface |= 0x0080; | |
450 | break; | |
451 | default: | |
452 | return -EINVAL; | |
453 | } | |
454 | ||
1e97f50b MB |
455 | snd_soc_write(codec, WM8974_IFACE, iface); |
456 | snd_soc_write(codec, WM8974_CLOCK, clk); | |
0a1bf553 MB |
457 | return 0; |
458 | } | |
459 | ||
460 | static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream, | |
461 | struct snd_pcm_hw_params *params, | |
462 | struct snd_soc_dai *dai) | |
463 | { | |
464 | struct snd_soc_codec *codec = dai->codec; | |
1e97f50b MB |
465 | u16 iface = snd_soc_read(codec, WM8974_IFACE) & 0x19f; |
466 | u16 adn = snd_soc_read(codec, WM8974_ADD) & 0x1f1; | |
0a1bf553 MB |
467 | |
468 | /* bit size */ | |
469 | switch (params_format(params)) { | |
470 | case SNDRV_PCM_FORMAT_S16_LE: | |
471 | break; | |
472 | case SNDRV_PCM_FORMAT_S20_3LE: | |
473 | iface |= 0x0020; | |
474 | break; | |
475 | case SNDRV_PCM_FORMAT_S24_LE: | |
476 | iface |= 0x0040; | |
477 | break; | |
478 | case SNDRV_PCM_FORMAT_S32_LE: | |
479 | iface |= 0x0060; | |
480 | break; | |
481 | } | |
482 | ||
483 | /* filter coefficient */ | |
484 | switch (params_rate(params)) { | |
485 | case SNDRV_PCM_RATE_8000: | |
486 | adn |= 0x5 << 1; | |
487 | break; | |
488 | case SNDRV_PCM_RATE_11025: | |
489 | adn |= 0x4 << 1; | |
490 | break; | |
491 | case SNDRV_PCM_RATE_16000: | |
492 | adn |= 0x3 << 1; | |
493 | break; | |
494 | case SNDRV_PCM_RATE_22050: | |
495 | adn |= 0x2 << 1; | |
496 | break; | |
497 | case SNDRV_PCM_RATE_32000: | |
498 | adn |= 0x1 << 1; | |
499 | break; | |
500 | case SNDRV_PCM_RATE_44100: | |
8b83a193 | 501 | case SNDRV_PCM_RATE_48000: |
0a1bf553 MB |
502 | break; |
503 | } | |
504 | ||
1e97f50b MB |
505 | snd_soc_write(codec, WM8974_IFACE, iface); |
506 | snd_soc_write(codec, WM8974_ADD, adn); | |
0a1bf553 MB |
507 | return 0; |
508 | } | |
509 | ||
510 | static int wm8974_mute(struct snd_soc_dai *dai, int mute) | |
511 | { | |
512 | struct snd_soc_codec *codec = dai->codec; | |
1e97f50b | 513 | u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf; |
0a1bf553 | 514 | |
1a55b3f6 | 515 | if (mute) |
1e97f50b | 516 | snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40); |
0a1bf553 | 517 | else |
1e97f50b | 518 | snd_soc_write(codec, WM8974_DAC, mute_reg); |
0a1bf553 MB |
519 | return 0; |
520 | } | |
521 | ||
522 | /* liam need to make this lower power with dapm */ | |
523 | static int wm8974_set_bias_level(struct snd_soc_codec *codec, | |
524 | enum snd_soc_bias_level level) | |
525 | { | |
1e97f50b | 526 | u16 power1 = snd_soc_read(codec, WM8974_POWER1) & ~0x3; |
df1ef7a3 | 527 | |
0a1bf553 MB |
528 | switch (level) { |
529 | case SND_SOC_BIAS_ON: | |
0a1bf553 | 530 | case SND_SOC_BIAS_PREPARE: |
df1ef7a3 | 531 | power1 |= 0x1; /* VMID 50k */ |
1e97f50b | 532 | snd_soc_write(codec, WM8974_POWER1, power1); |
0a1bf553 | 533 | break; |
df1ef7a3 | 534 | |
0a1bf553 | 535 | case SND_SOC_BIAS_STANDBY: |
df1ef7a3 MB |
536 | power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN; |
537 | ||
538 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
539 | /* Initial cap charge at VMID 5k */ | |
1e97f50b | 540 | snd_soc_write(codec, WM8974_POWER1, power1 | 0x3); |
df1ef7a3 MB |
541 | mdelay(100); |
542 | } | |
543 | ||
544 | power1 |= 0x2; /* VMID 500k */ | |
1e97f50b | 545 | snd_soc_write(codec, WM8974_POWER1, power1); |
0a1bf553 | 546 | break; |
df1ef7a3 | 547 | |
0a1bf553 | 548 | case SND_SOC_BIAS_OFF: |
1e97f50b MB |
549 | snd_soc_write(codec, WM8974_POWER1, 0); |
550 | snd_soc_write(codec, WM8974_POWER2, 0); | |
551 | snd_soc_write(codec, WM8974_POWER3, 0); | |
0a1bf553 MB |
552 | break; |
553 | } | |
df1ef7a3 | 554 | |
0a1bf553 MB |
555 | codec->bias_level = level; |
556 | return 0; | |
557 | } | |
558 | ||
1a55b3f6 | 559 | #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000) |
0a1bf553 MB |
560 | |
561 | #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
562 | SNDRV_PCM_FMTBIT_S24_LE) | |
563 | ||
564 | static struct snd_soc_dai_ops wm8974_ops = { | |
565 | .hw_params = wm8974_pcm_hw_params, | |
566 | .digital_mute = wm8974_mute, | |
567 | .set_fmt = wm8974_set_dai_fmt, | |
568 | .set_clkdiv = wm8974_set_dai_clkdiv, | |
569 | .set_pll = wm8974_set_dai_pll, | |
570 | }; | |
571 | ||
572 | struct snd_soc_dai wm8974_dai = { | |
573 | .name = "WM8974 HiFi", | |
574 | .playback = { | |
575 | .stream_name = "Playback", | |
576 | .channels_min = 1, | |
33d81af4 | 577 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
578 | .rates = WM8974_RATES, |
579 | .formats = WM8974_FORMATS,}, | |
580 | .capture = { | |
581 | .stream_name = "Capture", | |
582 | .channels_min = 1, | |
33d81af4 | 583 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
584 | .rates = WM8974_RATES, |
585 | .formats = WM8974_FORMATS,}, | |
586 | .ops = &wm8974_ops, | |
cb11d39e | 587 | .symmetric_rates = 1, |
0a1bf553 MB |
588 | }; |
589 | EXPORT_SYMBOL_GPL(wm8974_dai); | |
590 | ||
591 | static int wm8974_suspend(struct platform_device *pdev, pm_message_t state) | |
592 | { | |
593 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
594 | struct snd_soc_codec *codec = socdev->card->codec; | |
595 | ||
596 | wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
597 | return 0; | |
598 | } | |
599 | ||
600 | static int wm8974_resume(struct platform_device *pdev) | |
601 | { | |
602 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
603 | struct snd_soc_codec *codec = socdev->card->codec; | |
604 | int i; | |
605 | u8 data[2]; | |
606 | u16 *cache = codec->reg_cache; | |
607 | ||
608 | /* Sync reg_cache with the hardware */ | |
609 | for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { | |
610 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
611 | data[1] = cache[i] & 0x00ff; | |
612 | codec->hw_write(codec->control_data, data, 2); | |
613 | } | |
614 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
615 | wm8974_set_bias_level(codec, codec->suspend_bias_level); | |
616 | return 0; | |
617 | } | |
618 | ||
4fcbbb67 | 619 | static int wm8974_probe(struct platform_device *pdev) |
0a1bf553 | 620 | { |
4fcbbb67 MB |
621 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
622 | struct snd_soc_codec *codec; | |
0a1bf553 MB |
623 | int ret = 0; |
624 | ||
4fcbbb67 MB |
625 | if (wm8974_codec == NULL) { |
626 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
627 | return -ENODEV; | |
628 | } | |
0a1bf553 | 629 | |
4fcbbb67 MB |
630 | socdev->card->codec = wm8974_codec; |
631 | codec = wm8974_codec; | |
0a1bf553 MB |
632 | |
633 | /* register pcms */ | |
634 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
1a55b3f6 | 635 | if (ret < 0) { |
4fcbbb67 | 636 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); |
0a1bf553 MB |
637 | goto pcm_err; |
638 | } | |
639 | ||
4fcbbb67 MB |
640 | snd_soc_add_controls(codec, wm8974_snd_controls, |
641 | ARRAY_SIZE(wm8974_snd_controls)); | |
0a1bf553 | 642 | wm8974_add_widgets(codec); |
4fcbbb67 | 643 | |
0a1bf553 MB |
644 | return ret; |
645 | ||
0a1bf553 | 646 | pcm_err: |
0a1bf553 MB |
647 | return ret; |
648 | } | |
649 | ||
4fcbbb67 MB |
650 | /* power down chip */ |
651 | static int wm8974_remove(struct platform_device *pdev) | |
652 | { | |
653 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
0a1bf553 | 654 | |
4fcbbb67 MB |
655 | snd_soc_free_pcms(socdev); |
656 | snd_soc_dapm_free(socdev); | |
0a1bf553 | 657 | |
4fcbbb67 MB |
658 | return 0; |
659 | } | |
0a1bf553 | 660 | |
4fcbbb67 MB |
661 | struct snd_soc_codec_device soc_codec_dev_wm8974 = { |
662 | .probe = wm8974_probe, | |
663 | .remove = wm8974_remove, | |
664 | .suspend = wm8974_suspend, | |
665 | .resume = wm8974_resume, | |
666 | }; | |
667 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); | |
0a1bf553 | 668 | |
4fcbbb67 | 669 | static __devinit int wm8974_register(struct wm8974_priv *wm8974) |
0a1bf553 | 670 | { |
0a1bf553 | 671 | int ret; |
4fcbbb67 | 672 | struct snd_soc_codec *codec = &wm8974->codec; |
0a1bf553 | 673 | |
4fcbbb67 MB |
674 | if (wm8974_codec) { |
675 | dev_err(codec->dev, "Another WM8974 is registered\n"); | |
676 | return -EINVAL; | |
677 | } | |
0a1bf553 | 678 | |
4fcbbb67 MB |
679 | mutex_init(&codec->mutex); |
680 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
681 | INIT_LIST_HEAD(&codec->dapm_paths); | |
0a1bf553 | 682 | |
4fcbbb67 MB |
683 | codec->private_data = wm8974; |
684 | codec->name = "WM8974"; | |
685 | codec->owner = THIS_MODULE; | |
4fcbbb67 MB |
686 | codec->bias_level = SND_SOC_BIAS_OFF; |
687 | codec->set_bias_level = wm8974_set_bias_level; | |
688 | codec->dai = &wm8974_dai; | |
689 | codec->num_dai = 1; | |
690 | codec->reg_cache_size = WM8974_CACHEREGNUM; | |
691 | codec->reg_cache = &wm8974->reg_cache; | |
0a1bf553 | 692 | |
1e97f50b MB |
693 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C); |
694 | if (ret < 0) { | |
695 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
696 | goto err; | |
697 | } | |
698 | ||
4fcbbb67 MB |
699 | memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg)); |
700 | ||
701 | ret = wm8974_reset(codec); | |
0a1bf553 | 702 | if (ret < 0) { |
4fcbbb67 | 703 | dev_err(codec->dev, "Failed to issue reset\n"); |
1e97f50b | 704 | goto err; |
0a1bf553 MB |
705 | } |
706 | ||
4fcbbb67 MB |
707 | wm8974_dai.dev = codec->dev; |
708 | ||
709 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
710 | ||
711 | wm8974_codec = codec; | |
712 | ||
713 | ret = snd_soc_register_codec(codec); | |
714 | if (ret != 0) { | |
715 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
1e97f50b | 716 | goto err; |
0a1bf553 | 717 | } |
0a1bf553 | 718 | |
4fcbbb67 MB |
719 | ret = snd_soc_register_dai(&wm8974_dai); |
720 | if (ret != 0) { | |
721 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
1e97f50b | 722 | goto err_codec; |
4fcbbb67 | 723 | } |
0a1bf553 | 724 | |
0a1bf553 | 725 | return 0; |
1e97f50b MB |
726 | |
727 | err_codec: | |
728 | snd_soc_unregister_codec(codec); | |
729 | err: | |
730 | kfree(wm8974); | |
731 | return ret; | |
0a1bf553 MB |
732 | } |
733 | ||
4fcbbb67 | 734 | static __devexit void wm8974_unregister(struct wm8974_priv *wm8974) |
0a1bf553 | 735 | { |
4fcbbb67 MB |
736 | wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF); |
737 | snd_soc_unregister_dai(&wm8974_dai); | |
738 | snd_soc_unregister_codec(&wm8974->codec); | |
739 | kfree(wm8974); | |
740 | wm8974_codec = NULL; | |
0a1bf553 MB |
741 | } |
742 | ||
4fcbbb67 MB |
743 | static __devinit int wm8974_i2c_probe(struct i2c_client *i2c, |
744 | const struct i2c_device_id *id) | |
0a1bf553 | 745 | { |
4fcbbb67 | 746 | struct wm8974_priv *wm8974; |
0a1bf553 | 747 | struct snd_soc_codec *codec; |
0a1bf553 | 748 | |
4fcbbb67 MB |
749 | wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL); |
750 | if (wm8974 == NULL) | |
0a1bf553 MB |
751 | return -ENOMEM; |
752 | ||
4fcbbb67 MB |
753 | codec = &wm8974->codec; |
754 | codec->hw_write = (hw_write_t)i2c_master_send; | |
0a1bf553 | 755 | |
4fcbbb67 MB |
756 | i2c_set_clientdata(i2c, wm8974); |
757 | codec->control_data = i2c; | |
0a1bf553 | 758 | |
4fcbbb67 | 759 | codec->dev = &i2c->dev; |
0a1bf553 | 760 | |
4fcbbb67 MB |
761 | return wm8974_register(wm8974); |
762 | } | |
0a1bf553 | 763 | |
4fcbbb67 MB |
764 | static __devexit int wm8974_i2c_remove(struct i2c_client *client) |
765 | { | |
766 | struct wm8974_priv *wm8974 = i2c_get_clientdata(client); | |
767 | wm8974_unregister(wm8974); | |
0a1bf553 MB |
768 | return 0; |
769 | } | |
770 | ||
4fcbbb67 MB |
771 | static const struct i2c_device_id wm8974_i2c_id[] = { |
772 | { "wm8974", 0 }, | |
773 | { } | |
774 | }; | |
775 | MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id); | |
776 | ||
777 | static struct i2c_driver wm8974_i2c_driver = { | |
778 | .driver = { | |
8b83a193 | 779 | .name = "WM8974", |
4fcbbb67 MB |
780 | .owner = THIS_MODULE, |
781 | }, | |
782 | .probe = wm8974_i2c_probe, | |
783 | .remove = __devexit_p(wm8974_i2c_remove), | |
784 | .id_table = wm8974_i2c_id, | |
0a1bf553 | 785 | }; |
0a1bf553 MB |
786 | |
787 | static int __init wm8974_modinit(void) | |
788 | { | |
4fcbbb67 | 789 | return i2c_add_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
790 | } |
791 | module_init(wm8974_modinit); | |
792 | ||
793 | static void __exit wm8974_exit(void) | |
794 | { | |
4fcbbb67 | 795 | i2c_del_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
796 | } |
797 | module_exit(wm8974_exit); | |
798 | ||
799 | MODULE_DESCRIPTION("ASoC WM8974 driver"); | |
800 | MODULE_AUTHOR("Liam Girdwood"); | |
801 | MODULE_LICENSE("GPL"); |