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1 | /* |
2 | * wm8974.c -- WM8974 ALSA Soc Audio driver | |
3 | * | |
8b83a193 | 4 | * Copyright 2006-2009 Wolfson Microelectronics PLC. |
0a1bf553 | 5 | * |
4fcbbb67 | 6 | * Author: Liam Girdwood <linux@wolfsonmicro.com> |
0a1bf553 MB |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/moduleparam.h> | |
15 | #include <linux/version.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/pm.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <sound/core.h> | |
23 | #include <sound/pcm.h> | |
24 | #include <sound/pcm_params.h> | |
25 | #include <sound/soc.h> | |
26 | #include <sound/soc-dapm.h> | |
27 | #include <sound/initval.h> | |
a5f8d2f1 | 28 | #include <sound/tlv.h> |
0a1bf553 MB |
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 MB |
50 | #define WM8974_POWER1_BIASEN 0x08 |
51 | #define WM8974_POWER1_BUFIOEN 0x10 | |
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 | ||
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60 | /* |
61 | * read wm8974 register cache | |
62 | */ | |
1a55b3f6 | 63 | static inline unsigned int wm8974_read_reg_cache(struct snd_soc_codec *codec, |
0a1bf553 MB |
64 | unsigned int reg) |
65 | { | |
66 | u16 *cache = codec->reg_cache; | |
67 | if (reg == WM8974_RESET) | |
68 | return 0; | |
69 | if (reg >= WM8974_CACHEREGNUM) | |
70 | return -1; | |
71 | return cache[reg]; | |
72 | } | |
73 | ||
74 | /* | |
75 | * write wm8974 register cache | |
76 | */ | |
77 | static inline void wm8974_write_reg_cache(struct snd_soc_codec *codec, | |
78 | u16 reg, unsigned int value) | |
79 | { | |
80 | u16 *cache = codec->reg_cache; | |
81 | if (reg >= WM8974_CACHEREGNUM) | |
82 | return; | |
83 | cache[reg] = value; | |
84 | } | |
85 | ||
86 | /* | |
87 | * write to the WM8974 register space | |
88 | */ | |
89 | static int wm8974_write(struct snd_soc_codec *codec, unsigned int reg, | |
90 | unsigned int value) | |
91 | { | |
92 | u8 data[2]; | |
93 | ||
94 | /* data is | |
95 | * D15..D9 WM8974 register offset | |
96 | * D8...D0 register data | |
97 | */ | |
98 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); | |
99 | data[1] = value & 0x00ff; | |
100 | ||
1a55b3f6 | 101 | wm8974_write_reg_cache(codec, reg, value); |
0a1bf553 MB |
102 | if (codec->hw_write(codec->control_data, data, 2) == 2) |
103 | return 0; | |
104 | else | |
105 | return -EIO; | |
106 | } | |
107 | ||
108 | #define wm8974_reset(c) wm8974_write(c, WM8974_RESET, 0) | |
109 | ||
110 | static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" }; | |
111 | static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" }; | |
112 | static const char *wm8974_eqmode[] = {"Capture", "Playback" }; | |
113 | static const char *wm8974_bw[] = {"Narrow", "Wide" }; | |
114 | static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" }; | |
115 | static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" }; | |
116 | static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" }; | |
117 | static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" }; | |
118 | static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" }; | |
119 | static const char *wm8974_alc[] = {"ALC", "Limiter" }; | |
120 | ||
121 | static const struct soc_enum wm8974_enum[] = { | |
122 | SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */ | |
123 | SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */ | |
124 | SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp), | |
125 | SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode), | |
126 | ||
127 | SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1), | |
128 | SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw), | |
129 | SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2), | |
130 | SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw), | |
131 | ||
132 | SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3), | |
133 | SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw), | |
134 | SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4), | |
135 | SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw), | |
136 | ||
137 | SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5), | |
138 | SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc), | |
139 | }; | |
140 | ||
8a123ee2 MB |
141 | static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" }; |
142 | ||
143 | static const struct soc_enum wm8974_auxmode = | |
144 | SOC_ENUM_SINGLE(WM8974_INPUT, 3, 2, wm8974_auxmode_text); | |
145 | ||
a5f8d2f1 MB |
146 | static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1); |
147 | static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); | |
148 | static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0); | |
149 | static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0); | |
150 | ||
0a1bf553 MB |
151 | static const struct snd_kcontrol_new wm8974_snd_controls[] = { |
152 | ||
153 | SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0), | |
154 | ||
155 | SOC_ENUM("DAC Companding", wm8974_enum[1]), | |
156 | SOC_ENUM("ADC Companding", wm8974_enum[0]), | |
157 | ||
158 | SOC_ENUM("Playback De-emphasis", wm8974_enum[2]), | |
159 | SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0), | |
160 | ||
a5f8d2f1 | 161 | SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv), |
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162 | |
163 | SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0), | |
164 | SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0), | |
25cbf465 | 165 | SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0), |
0a1bf553 | 166 | |
a5f8d2f1 | 167 | SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv), |
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168 | |
169 | SOC_ENUM("Equaliser Function", wm8974_enum[3]), | |
170 | SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]), | |
a5f8d2f1 | 171 | SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv), |
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172 | |
173 | SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]), | |
174 | SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]), | |
a5f8d2f1 | 175 | SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv), |
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176 | |
177 | SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]), | |
178 | SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]), | |
a5f8d2f1 | 179 | SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv), |
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180 | |
181 | SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]), | |
182 | SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]), | |
a5f8d2f1 | 183 | SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv), |
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184 | |
185 | SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]), | |
186 | SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]), | |
a5f8d2f1 | 187 | SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv), |
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188 | |
189 | SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0), | |
190 | SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0), | |
191 | SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0), | |
192 | ||
193 | SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0), | |
194 | SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0), | |
195 | ||
196 | SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0), | |
197 | SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0), | |
198 | SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0), | |
199 | ||
200 | SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0), | |
201 | SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0), | |
202 | SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0), | |
203 | ||
204 | SOC_ENUM("ALC Capture Mode", wm8974_enum[13]), | |
205 | SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0), | |
206 | SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0), | |
207 | ||
208 | SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0), | |
209 | SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0), | |
210 | ||
211 | SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0), | |
a5f8d2f1 | 212 | SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv), |
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213 | |
214 | SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0), | |
215 | SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1), | |
8a123ee2 MB |
216 | SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv), |
217 | ||
218 | SOC_ENUM("Aux Mode", wm8974_auxmode), | |
0a1bf553 MB |
219 | |
220 | SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0), | |
8a123ee2 | 221 | SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1), |
0a1bf553 MB |
222 | }; |
223 | ||
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224 | /* Speaker Output Mixer */ |
225 | static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = { | |
226 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0), | |
227 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0), | |
228 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 1), | |
229 | }; | |
230 | ||
231 | /* Mono Output Mixer */ | |
232 | static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = { | |
233 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0), | |
234 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0), | |
8a123ee2 MB |
235 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0), |
236 | }; | |
237 | ||
238 | /* Boost mixer */ | |
239 | static const struct snd_kcontrol_new wm8974_boost_mixer[] = { | |
240 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0), | |
241 | }; | |
242 | ||
243 | /* Input PGA */ | |
244 | static const struct snd_kcontrol_new wm8974_inpga[] = { | |
245 | SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0), | |
246 | SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0), | |
247 | SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0), | |
0a1bf553 MB |
248 | }; |
249 | ||
250 | /* AUX Input boost vol */ | |
251 | static const struct snd_kcontrol_new wm8974_aux_boost_controls = | |
252 | SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); | |
253 | ||
254 | /* Mic Input boost vol */ | |
255 | static const struct snd_kcontrol_new wm8974_mic_boost_controls = | |
256 | SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); | |
257 | ||
0a1bf553 MB |
258 | static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { |
259 | SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, | |
260 | &wm8974_speaker_mixer_controls[0], | |
261 | ARRAY_SIZE(wm8974_speaker_mixer_controls)), | |
262 | SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, | |
263 | &wm8974_mono_mixer_controls[0], | |
264 | ARRAY_SIZE(wm8974_mono_mixer_controls)), | |
265 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), | |
8a123ee2 | 266 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0), |
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267 | SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), |
268 | SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), | |
269 | SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), | |
270 | SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), | |
0a1bf553 | 271 | |
8a123ee2 MB |
272 | SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga, |
273 | ARRAY_SIZE(wm8974_inpga)), | |
274 | SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, | |
275 | wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)), | |
0a1bf553 MB |
276 | |
277 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), | |
278 | ||
279 | SND_SOC_DAPM_INPUT("MICN"), | |
280 | SND_SOC_DAPM_INPUT("MICP"), | |
281 | SND_SOC_DAPM_INPUT("AUX"), | |
282 | SND_SOC_DAPM_OUTPUT("MONOOUT"), | |
283 | SND_SOC_DAPM_OUTPUT("SPKOUTP"), | |
284 | SND_SOC_DAPM_OUTPUT("SPKOUTN"), | |
285 | }; | |
286 | ||
287 | static const struct snd_soc_dapm_route audio_map[] = { | |
288 | /* Mono output mixer */ | |
289 | {"Mono Mixer", "PCM Playback Switch", "DAC"}, | |
290 | {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, | |
291 | {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
292 | ||
293 | /* Speaker output mixer */ | |
294 | {"Speaker Mixer", "PCM Playback Switch", "DAC"}, | |
295 | {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, | |
296 | {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
297 | ||
298 | /* Outputs */ | |
299 | {"Mono Out", NULL, "Mono Mixer"}, | |
300 | {"MONOOUT", NULL, "Mono Out"}, | |
301 | {"SpkN Out", NULL, "Speaker Mixer"}, | |
302 | {"SpkP Out", NULL, "Speaker Mixer"}, | |
303 | {"SPKOUTN", NULL, "SpkN Out"}, | |
304 | {"SPKOUTP", NULL, "SpkP Out"}, | |
305 | ||
306 | /* Boost Mixer */ | |
8a123ee2 MB |
307 | {"ADC", NULL, "Boost Mixer"}, |
308 | {"Boost Mixer", "Aux Switch", "Aux Input"}, | |
309 | {"Boost Mixer", NULL, "Input PGA"}, | |
310 | {"Boost Mixer", NULL, "MICP"}, | |
311 | ||
312 | /* Input PGA */ | |
313 | {"Input PGA", "Aux Switch", "Aux Input"}, | |
314 | {"Input PGA", "MicN Switch", "MICN"}, | |
315 | {"Input PGA", "MicP Switch", "MICP"}, | |
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316 | |
317 | /* Inputs */ | |
8a123ee2 | 318 | {"Aux Input", NULL, "AUX"}, |
0a1bf553 MB |
319 | }; |
320 | ||
321 | static int wm8974_add_widgets(struct snd_soc_codec *codec) | |
322 | { | |
323 | snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, | |
324 | ARRAY_SIZE(wm8974_dapm_widgets)); | |
325 | ||
326 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
327 | ||
328 | snd_soc_dapm_new_widgets(codec); | |
329 | return 0; | |
330 | } | |
331 | ||
332 | struct pll_ { | |
c36b2fc7 | 333 | unsigned int pre_div:1; |
0a1bf553 MB |
334 | unsigned int n:4; |
335 | unsigned int k; | |
336 | }; | |
337 | ||
91d0c3ec MB |
338 | /* The size in bits of the pll divide multiplied by 10 |
339 | * to allow rounding later */ | |
340 | #define FIXED_PLL_SIZE ((1 << 24) * 10) | |
341 | ||
c36b2fc7 MB |
342 | static void pll_factors(struct pll_ *pll_div, |
343 | unsigned int target, unsigned int source) | |
91d0c3ec MB |
344 | { |
345 | unsigned long long Kpart; | |
346 | unsigned int K, Ndiv, Nmod; | |
347 | ||
c36b2fc7 MB |
348 | /* There is a fixed divide by 4 in the output path */ |
349 | target *= 4; | |
350 | ||
91d0c3ec MB |
351 | Ndiv = target / source; |
352 | if (Ndiv < 6) { | |
c36b2fc7 MB |
353 | source /= 2; |
354 | pll_div->pre_div = 1; | |
91d0c3ec MB |
355 | Ndiv = target / source; |
356 | } else | |
c36b2fc7 | 357 | pll_div->pre_div = 0; |
91d0c3ec MB |
358 | |
359 | if ((Ndiv < 6) || (Ndiv > 12)) | |
360 | printk(KERN_WARNING | |
8b83a193 | 361 | "WM8974 N value %u outwith recommended range!\n", |
91d0c3ec MB |
362 | Ndiv); |
363 | ||
c36b2fc7 | 364 | pll_div->n = Ndiv; |
91d0c3ec MB |
365 | Nmod = target % source; |
366 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; | |
367 | ||
368 | do_div(Kpart, source); | |
369 | ||
370 | K = Kpart & 0xFFFFFFFF; | |
371 | ||
372 | /* Check if we need to round */ | |
373 | if ((K % 10) >= 5) | |
374 | K += 5; | |
375 | ||
376 | /* Move down to proper range now rounding is done */ | |
377 | K /= 10; | |
378 | ||
c36b2fc7 | 379 | pll_div->k = K; |
91d0c3ec | 380 | } |
0a1bf553 MB |
381 | |
382 | static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, | |
383 | int pll_id, unsigned int freq_in, unsigned int freq_out) | |
384 | { | |
385 | struct snd_soc_codec *codec = codec_dai->codec; | |
c36b2fc7 | 386 | struct pll_ pll_div; |
0a1bf553 MB |
387 | u16 reg; |
388 | ||
1a55b3f6 | 389 | if (freq_in == 0 || freq_out == 0) { |
91d0c3ec MB |
390 | /* Clock CODEC directly from MCLK */ |
391 | reg = wm8974_read_reg_cache(codec, WM8974_CLOCK); | |
392 | wm8974_write(codec, WM8974_CLOCK, reg & 0x0ff); | |
393 | ||
394 | /* Turn off PLL */ | |
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395 | reg = wm8974_read_reg_cache(codec, WM8974_POWER1); |
396 | wm8974_write(codec, WM8974_POWER1, reg & 0x1df); | |
397 | return 0; | |
398 | } | |
399 | ||
c36b2fc7 | 400 | pll_factors(&pll_div, freq_out, freq_in); |
91d0c3ec MB |
401 | |
402 | wm8974_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n); | |
403 | wm8974_write(codec, WM8974_PLLK1, pll_div.k >> 18); | |
404 | wm8974_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff); | |
405 | wm8974_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff); | |
406 | reg = wm8974_read_reg_cache(codec, WM8974_POWER1); | |
407 | wm8974_write(codec, WM8974_POWER1, reg | 0x020); | |
1a55b3f6 | 408 | |
91d0c3ec MB |
409 | /* Run CODEC from PLL instead of MCLK */ |
410 | reg = wm8974_read_reg_cache(codec, WM8974_CLOCK); | |
411 | wm8974_write(codec, WM8974_CLOCK, reg | 0x100); | |
412 | ||
413 | return 0; | |
0a1bf553 MB |
414 | } |
415 | ||
416 | /* | |
417 | * Configure WM8974 clock dividers. | |
418 | */ | |
419 | static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
420 | int div_id, int div) | |
421 | { | |
422 | struct snd_soc_codec *codec = codec_dai->codec; | |
423 | u16 reg; | |
424 | ||
425 | switch (div_id) { | |
426 | case WM8974_OPCLKDIV: | |
1a55b3f6 | 427 | reg = wm8974_read_reg_cache(codec, WM8974_GPIO) & 0x1cf; |
0a1bf553 MB |
428 | wm8974_write(codec, WM8974_GPIO, reg | div); |
429 | break; | |
430 | case WM8974_MCLKDIV: | |
431 | reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x11f; | |
432 | wm8974_write(codec, WM8974_CLOCK, reg | div); | |
433 | break; | |
434 | case WM8974_ADCCLK: | |
435 | reg = wm8974_read_reg_cache(codec, WM8974_ADC) & 0x1f7; | |
436 | wm8974_write(codec, WM8974_ADC, reg | div); | |
437 | break; | |
438 | case WM8974_DACCLK: | |
439 | reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0x1f7; | |
440 | wm8974_write(codec, WM8974_DAC, reg | div); | |
441 | break; | |
442 | case WM8974_BCLKDIV: | |
443 | reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1e3; | |
444 | wm8974_write(codec, WM8974_CLOCK, reg | div); | |
445 | break; | |
446 | default: | |
447 | return -EINVAL; | |
448 | } | |
449 | ||
450 | return 0; | |
451 | } | |
452 | ||
453 | static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
454 | unsigned int fmt) | |
455 | { | |
456 | struct snd_soc_codec *codec = codec_dai->codec; | |
457 | u16 iface = 0; | |
458 | u16 clk = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1fe; | |
459 | ||
460 | /* set master/slave audio interface */ | |
461 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
462 | case SND_SOC_DAIFMT_CBM_CFM: | |
463 | clk |= 0x0001; | |
464 | break; | |
465 | case SND_SOC_DAIFMT_CBS_CFS: | |
466 | break; | |
467 | default: | |
468 | return -EINVAL; | |
469 | } | |
470 | ||
471 | /* interface format */ | |
472 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
473 | case SND_SOC_DAIFMT_I2S: | |
474 | iface |= 0x0010; | |
475 | break; | |
476 | case SND_SOC_DAIFMT_RIGHT_J: | |
477 | break; | |
478 | case SND_SOC_DAIFMT_LEFT_J: | |
479 | iface |= 0x0008; | |
480 | break; | |
481 | case SND_SOC_DAIFMT_DSP_A: | |
482 | iface |= 0x00018; | |
483 | break; | |
484 | default: | |
485 | return -EINVAL; | |
486 | } | |
487 | ||
488 | /* clock inversion */ | |
489 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
490 | case SND_SOC_DAIFMT_NB_NF: | |
491 | break; | |
492 | case SND_SOC_DAIFMT_IB_IF: | |
493 | iface |= 0x0180; | |
494 | break; | |
495 | case SND_SOC_DAIFMT_IB_NF: | |
496 | iface |= 0x0100; | |
497 | break; | |
498 | case SND_SOC_DAIFMT_NB_IF: | |
499 | iface |= 0x0080; | |
500 | break; | |
501 | default: | |
502 | return -EINVAL; | |
503 | } | |
504 | ||
505 | wm8974_write(codec, WM8974_IFACE, iface); | |
506 | wm8974_write(codec, WM8974_CLOCK, clk); | |
507 | return 0; | |
508 | } | |
509 | ||
510 | static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream, | |
511 | struct snd_pcm_hw_params *params, | |
512 | struct snd_soc_dai *dai) | |
513 | { | |
514 | struct snd_soc_codec *codec = dai->codec; | |
515 | u16 iface = wm8974_read_reg_cache(codec, WM8974_IFACE) & 0x19f; | |
516 | u16 adn = wm8974_read_reg_cache(codec, WM8974_ADD) & 0x1f1; | |
517 | ||
518 | /* bit size */ | |
519 | switch (params_format(params)) { | |
520 | case SNDRV_PCM_FORMAT_S16_LE: | |
521 | break; | |
522 | case SNDRV_PCM_FORMAT_S20_3LE: | |
523 | iface |= 0x0020; | |
524 | break; | |
525 | case SNDRV_PCM_FORMAT_S24_LE: | |
526 | iface |= 0x0040; | |
527 | break; | |
528 | case SNDRV_PCM_FORMAT_S32_LE: | |
529 | iface |= 0x0060; | |
530 | break; | |
531 | } | |
532 | ||
533 | /* filter coefficient */ | |
534 | switch (params_rate(params)) { | |
535 | case SNDRV_PCM_RATE_8000: | |
536 | adn |= 0x5 << 1; | |
537 | break; | |
538 | case SNDRV_PCM_RATE_11025: | |
539 | adn |= 0x4 << 1; | |
540 | break; | |
541 | case SNDRV_PCM_RATE_16000: | |
542 | adn |= 0x3 << 1; | |
543 | break; | |
544 | case SNDRV_PCM_RATE_22050: | |
545 | adn |= 0x2 << 1; | |
546 | break; | |
547 | case SNDRV_PCM_RATE_32000: | |
548 | adn |= 0x1 << 1; | |
549 | break; | |
550 | case SNDRV_PCM_RATE_44100: | |
8b83a193 | 551 | case SNDRV_PCM_RATE_48000: |
0a1bf553 MB |
552 | break; |
553 | } | |
554 | ||
555 | wm8974_write(codec, WM8974_IFACE, iface); | |
556 | wm8974_write(codec, WM8974_ADD, adn); | |
557 | return 0; | |
558 | } | |
559 | ||
560 | static int wm8974_mute(struct snd_soc_dai *dai, int mute) | |
561 | { | |
562 | struct snd_soc_codec *codec = dai->codec; | |
563 | u16 mute_reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0xffbf; | |
564 | ||
1a55b3f6 | 565 | if (mute) |
0a1bf553 MB |
566 | wm8974_write(codec, WM8974_DAC, mute_reg | 0x40); |
567 | else | |
568 | wm8974_write(codec, WM8974_DAC, mute_reg); | |
569 | return 0; | |
570 | } | |
571 | ||
572 | /* liam need to make this lower power with dapm */ | |
573 | static int wm8974_set_bias_level(struct snd_soc_codec *codec, | |
574 | enum snd_soc_bias_level level) | |
575 | { | |
df1ef7a3 MB |
576 | u16 power1 = wm8974_read_reg_cache(codec, WM8974_POWER1) & ~0x3; |
577 | ||
0a1bf553 MB |
578 | switch (level) { |
579 | case SND_SOC_BIAS_ON: | |
0a1bf553 | 580 | case SND_SOC_BIAS_PREPARE: |
df1ef7a3 MB |
581 | power1 |= 0x1; /* VMID 50k */ |
582 | wm8974_write(codec, WM8974_POWER1, power1); | |
0a1bf553 | 583 | break; |
df1ef7a3 | 584 | |
0a1bf553 | 585 | case SND_SOC_BIAS_STANDBY: |
df1ef7a3 MB |
586 | power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN; |
587 | ||
588 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
589 | /* Initial cap charge at VMID 5k */ | |
590 | wm8974_write(codec, WM8974_POWER1, power1 | 0x3); | |
591 | mdelay(100); | |
592 | } | |
593 | ||
594 | power1 |= 0x2; /* VMID 500k */ | |
595 | wm8974_write(codec, WM8974_POWER1, power1); | |
0a1bf553 | 596 | break; |
df1ef7a3 | 597 | |
0a1bf553 | 598 | case SND_SOC_BIAS_OFF: |
df1ef7a3 MB |
599 | wm8974_write(codec, WM8974_POWER1, 0); |
600 | wm8974_write(codec, WM8974_POWER2, 0); | |
601 | wm8974_write(codec, WM8974_POWER3, 0); | |
0a1bf553 MB |
602 | break; |
603 | } | |
df1ef7a3 | 604 | |
0a1bf553 MB |
605 | codec->bias_level = level; |
606 | return 0; | |
607 | } | |
608 | ||
1a55b3f6 | 609 | #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000) |
0a1bf553 MB |
610 | |
611 | #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
612 | SNDRV_PCM_FMTBIT_S24_LE) | |
613 | ||
614 | static struct snd_soc_dai_ops wm8974_ops = { | |
615 | .hw_params = wm8974_pcm_hw_params, | |
616 | .digital_mute = wm8974_mute, | |
617 | .set_fmt = wm8974_set_dai_fmt, | |
618 | .set_clkdiv = wm8974_set_dai_clkdiv, | |
619 | .set_pll = wm8974_set_dai_pll, | |
620 | }; | |
621 | ||
622 | struct snd_soc_dai wm8974_dai = { | |
623 | .name = "WM8974 HiFi", | |
624 | .playback = { | |
625 | .stream_name = "Playback", | |
626 | .channels_min = 1, | |
33d81af4 | 627 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
628 | .rates = WM8974_RATES, |
629 | .formats = WM8974_FORMATS,}, | |
630 | .capture = { | |
631 | .stream_name = "Capture", | |
632 | .channels_min = 1, | |
33d81af4 | 633 | .channels_max = 2, /* Only 1 channel of data */ |
0a1bf553 MB |
634 | .rates = WM8974_RATES, |
635 | .formats = WM8974_FORMATS,}, | |
636 | .ops = &wm8974_ops, | |
cb11d39e | 637 | .symmetric_rates = 1, |
0a1bf553 MB |
638 | }; |
639 | EXPORT_SYMBOL_GPL(wm8974_dai); | |
640 | ||
641 | static int wm8974_suspend(struct platform_device *pdev, pm_message_t state) | |
642 | { | |
643 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
644 | struct snd_soc_codec *codec = socdev->card->codec; | |
645 | ||
646 | wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
647 | return 0; | |
648 | } | |
649 | ||
650 | static int wm8974_resume(struct platform_device *pdev) | |
651 | { | |
652 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
653 | struct snd_soc_codec *codec = socdev->card->codec; | |
654 | int i; | |
655 | u8 data[2]; | |
656 | u16 *cache = codec->reg_cache; | |
657 | ||
658 | /* Sync reg_cache with the hardware */ | |
659 | for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { | |
660 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
661 | data[1] = cache[i] & 0x00ff; | |
662 | codec->hw_write(codec->control_data, data, 2); | |
663 | } | |
664 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
665 | wm8974_set_bias_level(codec, codec->suspend_bias_level); | |
666 | return 0; | |
667 | } | |
668 | ||
4fcbbb67 | 669 | static int wm8974_probe(struct platform_device *pdev) |
0a1bf553 | 670 | { |
4fcbbb67 MB |
671 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
672 | struct snd_soc_codec *codec; | |
0a1bf553 MB |
673 | int ret = 0; |
674 | ||
4fcbbb67 MB |
675 | if (wm8974_codec == NULL) { |
676 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
677 | return -ENODEV; | |
678 | } | |
0a1bf553 | 679 | |
4fcbbb67 MB |
680 | socdev->card->codec = wm8974_codec; |
681 | codec = wm8974_codec; | |
0a1bf553 MB |
682 | |
683 | /* register pcms */ | |
684 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
1a55b3f6 | 685 | if (ret < 0) { |
4fcbbb67 | 686 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); |
0a1bf553 MB |
687 | goto pcm_err; |
688 | } | |
689 | ||
4fcbbb67 MB |
690 | snd_soc_add_controls(codec, wm8974_snd_controls, |
691 | ARRAY_SIZE(wm8974_snd_controls)); | |
0a1bf553 MB |
692 | wm8974_add_widgets(codec); |
693 | ret = snd_soc_init_card(socdev); | |
694 | if (ret < 0) { | |
4fcbbb67 | 695 | dev_err(codec->dev, "failed to register card: %d\n", ret); |
0a1bf553 MB |
696 | goto card_err; |
697 | } | |
4fcbbb67 | 698 | |
0a1bf553 MB |
699 | return ret; |
700 | ||
701 | card_err: | |
702 | snd_soc_free_pcms(socdev); | |
703 | snd_soc_dapm_free(socdev); | |
704 | pcm_err: | |
0a1bf553 MB |
705 | return ret; |
706 | } | |
707 | ||
4fcbbb67 MB |
708 | /* power down chip */ |
709 | static int wm8974_remove(struct platform_device *pdev) | |
710 | { | |
711 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
0a1bf553 | 712 | |
4fcbbb67 MB |
713 | snd_soc_free_pcms(socdev); |
714 | snd_soc_dapm_free(socdev); | |
0a1bf553 | 715 | |
4fcbbb67 MB |
716 | return 0; |
717 | } | |
0a1bf553 | 718 | |
4fcbbb67 MB |
719 | struct snd_soc_codec_device soc_codec_dev_wm8974 = { |
720 | .probe = wm8974_probe, | |
721 | .remove = wm8974_remove, | |
722 | .suspend = wm8974_suspend, | |
723 | .resume = wm8974_resume, | |
724 | }; | |
725 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); | |
0a1bf553 | 726 | |
4fcbbb67 | 727 | static __devinit int wm8974_register(struct wm8974_priv *wm8974) |
0a1bf553 | 728 | { |
0a1bf553 | 729 | int ret; |
4fcbbb67 | 730 | struct snd_soc_codec *codec = &wm8974->codec; |
0a1bf553 | 731 | |
4fcbbb67 MB |
732 | if (wm8974_codec) { |
733 | dev_err(codec->dev, "Another WM8974 is registered\n"); | |
734 | return -EINVAL; | |
735 | } | |
0a1bf553 | 736 | |
4fcbbb67 MB |
737 | mutex_init(&codec->mutex); |
738 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
739 | INIT_LIST_HEAD(&codec->dapm_paths); | |
0a1bf553 | 740 | |
4fcbbb67 MB |
741 | codec->private_data = wm8974; |
742 | codec->name = "WM8974"; | |
743 | codec->owner = THIS_MODULE; | |
744 | codec->read = wm8974_read_reg_cache; | |
745 | codec->write = wm8974_write; | |
746 | codec->bias_level = SND_SOC_BIAS_OFF; | |
747 | codec->set_bias_level = wm8974_set_bias_level; | |
748 | codec->dai = &wm8974_dai; | |
749 | codec->num_dai = 1; | |
750 | codec->reg_cache_size = WM8974_CACHEREGNUM; | |
751 | codec->reg_cache = &wm8974->reg_cache; | |
0a1bf553 | 752 | |
4fcbbb67 MB |
753 | memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg)); |
754 | ||
755 | ret = wm8974_reset(codec); | |
0a1bf553 | 756 | if (ret < 0) { |
4fcbbb67 MB |
757 | dev_err(codec->dev, "Failed to issue reset\n"); |
758 | return ret; | |
0a1bf553 MB |
759 | } |
760 | ||
4fcbbb67 MB |
761 | wm8974_dai.dev = codec->dev; |
762 | ||
763 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
764 | ||
765 | wm8974_codec = codec; | |
766 | ||
767 | ret = snd_soc_register_codec(codec); | |
768 | if (ret != 0) { | |
769 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
770 | return ret; | |
0a1bf553 | 771 | } |
0a1bf553 | 772 | |
4fcbbb67 MB |
773 | ret = snd_soc_register_dai(&wm8974_dai); |
774 | if (ret != 0) { | |
775 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
776 | snd_soc_unregister_codec(codec); | |
777 | return ret; | |
778 | } | |
0a1bf553 | 779 | |
0a1bf553 MB |
780 | return 0; |
781 | } | |
782 | ||
4fcbbb67 | 783 | static __devexit void wm8974_unregister(struct wm8974_priv *wm8974) |
0a1bf553 | 784 | { |
4fcbbb67 MB |
785 | wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF); |
786 | snd_soc_unregister_dai(&wm8974_dai); | |
787 | snd_soc_unregister_codec(&wm8974->codec); | |
788 | kfree(wm8974); | |
789 | wm8974_codec = NULL; | |
0a1bf553 MB |
790 | } |
791 | ||
4fcbbb67 MB |
792 | static __devinit int wm8974_i2c_probe(struct i2c_client *i2c, |
793 | const struct i2c_device_id *id) | |
0a1bf553 | 794 | { |
4fcbbb67 | 795 | struct wm8974_priv *wm8974; |
0a1bf553 | 796 | struct snd_soc_codec *codec; |
0a1bf553 | 797 | |
4fcbbb67 MB |
798 | wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL); |
799 | if (wm8974 == NULL) | |
0a1bf553 MB |
800 | return -ENOMEM; |
801 | ||
4fcbbb67 MB |
802 | codec = &wm8974->codec; |
803 | codec->hw_write = (hw_write_t)i2c_master_send; | |
0a1bf553 | 804 | |
4fcbbb67 MB |
805 | i2c_set_clientdata(i2c, wm8974); |
806 | codec->control_data = i2c; | |
0a1bf553 | 807 | |
4fcbbb67 | 808 | codec->dev = &i2c->dev; |
0a1bf553 | 809 | |
4fcbbb67 MB |
810 | return wm8974_register(wm8974); |
811 | } | |
0a1bf553 | 812 | |
4fcbbb67 MB |
813 | static __devexit int wm8974_i2c_remove(struct i2c_client *client) |
814 | { | |
815 | struct wm8974_priv *wm8974 = i2c_get_clientdata(client); | |
816 | wm8974_unregister(wm8974); | |
0a1bf553 MB |
817 | return 0; |
818 | } | |
819 | ||
4fcbbb67 MB |
820 | static const struct i2c_device_id wm8974_i2c_id[] = { |
821 | { "wm8974", 0 }, | |
822 | { } | |
823 | }; | |
824 | MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id); | |
825 | ||
826 | static struct i2c_driver wm8974_i2c_driver = { | |
827 | .driver = { | |
8b83a193 | 828 | .name = "WM8974", |
4fcbbb67 MB |
829 | .owner = THIS_MODULE, |
830 | }, | |
831 | .probe = wm8974_i2c_probe, | |
832 | .remove = __devexit_p(wm8974_i2c_remove), | |
833 | .id_table = wm8974_i2c_id, | |
0a1bf553 | 834 | }; |
0a1bf553 MB |
835 | |
836 | static int __init wm8974_modinit(void) | |
837 | { | |
4fcbbb67 | 838 | return i2c_add_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
839 | } |
840 | module_init(wm8974_modinit); | |
841 | ||
842 | static void __exit wm8974_exit(void) | |
843 | { | |
4fcbbb67 | 844 | i2c_del_driver(&wm8974_i2c_driver); |
0a1bf553 MB |
845 | } |
846 | module_exit(wm8974_exit); | |
847 | ||
848 | MODULE_DESCRIPTION("ASoC WM8974 driver"); | |
849 | MODULE_AUTHOR("Liam Girdwood"); | |
850 | MODULE_LICENSE("GPL"); |