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0d34e915 GL |
1 | /* |
2 | * wm8978.c -- WM8978 ALSA SoC Audio Codec driver | |
3 | * | |
4 | * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> | |
5 | * Copyright (C) 2007 Carlos Munoz <carlos@kenati.com> | |
6 | * Copyright 2006-2009 Wolfson Microelectronics PLC. | |
7 | * Based on wm8974 and wm8990 by Liam Girdwood <lrg@slimlogic.co.uk> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/moduleparam.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> | |
28 | #include <sound/tlv.h> | |
29 | #include <asm/div64.h> | |
30 | ||
31 | #include "wm8978.h" | |
32 | ||
33 | static struct snd_soc_codec *wm8978_codec; | |
34 | ||
35 | /* wm8978 register cache. Note that register 0 is not included in the cache. */ | |
36 | static const u16 wm8978_reg[WM8978_CACHEREGNUM] = { | |
37 | 0x0000, 0x0000, 0x0000, 0x0000, /* 0x00...0x03 */ | |
38 | 0x0050, 0x0000, 0x0140, 0x0000, /* 0x04...0x07 */ | |
39 | 0x0000, 0x0000, 0x0000, 0x00ff, /* 0x08...0x0b */ | |
40 | 0x00ff, 0x0000, 0x0100, 0x00ff, /* 0x0c...0x0f */ | |
41 | 0x00ff, 0x0000, 0x012c, 0x002c, /* 0x10...0x13 */ | |
42 | 0x002c, 0x002c, 0x002c, 0x0000, /* 0x14...0x17 */ | |
43 | 0x0032, 0x0000, 0x0000, 0x0000, /* 0x18...0x1b */ | |
44 | 0x0000, 0x0000, 0x0000, 0x0000, /* 0x1c...0x1f */ | |
45 | 0x0038, 0x000b, 0x0032, 0x0000, /* 0x20...0x23 */ | |
46 | 0x0008, 0x000c, 0x0093, 0x00e9, /* 0x24...0x27 */ | |
47 | 0x0000, 0x0000, 0x0000, 0x0000, /* 0x28...0x2b */ | |
48 | 0x0033, 0x0010, 0x0010, 0x0100, /* 0x2c...0x2f */ | |
49 | 0x0100, 0x0002, 0x0001, 0x0001, /* 0x30...0x33 */ | |
50 | 0x0039, 0x0039, 0x0039, 0x0039, /* 0x34...0x37 */ | |
51 | 0x0001, 0x0001, /* 0x38...0x3b */ | |
52 | }; | |
53 | ||
54 | /* codec private data */ | |
55 | struct wm8978_priv { | |
56 | struct snd_soc_codec codec; | |
57 | unsigned int f_pllout; | |
58 | unsigned int f_mclk; | |
59 | unsigned int f_256fs; | |
60 | unsigned int f_opclk; | |
b0580913 | 61 | int mclk_idx; |
0d34e915 GL |
62 | enum wm8978_sysclk_src sysclk; |
63 | u16 reg_cache[WM8978_CACHEREGNUM]; | |
64 | }; | |
65 | ||
66 | static const char *wm8978_companding[] = {"Off", "NC", "u-law", "A-law"}; | |
67 | static const char *wm8978_eqmode[] = {"Capture", "Playback"}; | |
68 | static const char *wm8978_bw[] = {"Narrow", "Wide"}; | |
69 | static const char *wm8978_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz"}; | |
70 | static const char *wm8978_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz"}; | |
71 | static const char *wm8978_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz"}; | |
72 | static const char *wm8978_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz"}; | |
73 | static const char *wm8978_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz"}; | |
74 | static const char *wm8978_alc3[] = {"ALC", "Limiter"}; | |
75 | static const char *wm8978_alc1[] = {"Off", "Right", "Left", "Both"}; | |
76 | ||
77 | static const SOC_ENUM_SINGLE_DECL(adc_compand, WM8978_COMPANDING_CONTROL, 1, | |
78 | wm8978_companding); | |
79 | static const SOC_ENUM_SINGLE_DECL(dac_compand, WM8978_COMPANDING_CONTROL, 3, | |
80 | wm8978_companding); | |
81 | static const SOC_ENUM_SINGLE_DECL(eqmode, WM8978_EQ1, 8, wm8978_eqmode); | |
82 | static const SOC_ENUM_SINGLE_DECL(eq1, WM8978_EQ1, 5, wm8978_eq1); | |
83 | static const SOC_ENUM_SINGLE_DECL(eq2bw, WM8978_EQ2, 8, wm8978_bw); | |
84 | static const SOC_ENUM_SINGLE_DECL(eq2, WM8978_EQ2, 5, wm8978_eq2); | |
85 | static const SOC_ENUM_SINGLE_DECL(eq3bw, WM8978_EQ3, 8, wm8978_bw); | |
86 | static const SOC_ENUM_SINGLE_DECL(eq3, WM8978_EQ3, 5, wm8978_eq3); | |
87 | static const SOC_ENUM_SINGLE_DECL(eq4bw, WM8978_EQ4, 8, wm8978_bw); | |
88 | static const SOC_ENUM_SINGLE_DECL(eq4, WM8978_EQ4, 5, wm8978_eq4); | |
89 | static const SOC_ENUM_SINGLE_DECL(eq5, WM8978_EQ5, 5, wm8978_eq5); | |
90 | static const SOC_ENUM_SINGLE_DECL(alc3, WM8978_ALC_CONTROL_3, 8, wm8978_alc3); | |
91 | static const SOC_ENUM_SINGLE_DECL(alc1, WM8978_ALC_CONTROL_1, 7, wm8978_alc1); | |
92 | ||
93 | static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1); | |
94 | static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); | |
95 | static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0); | |
96 | static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0); | |
97 | static const DECLARE_TLV_DB_SCALE(boost_tlv, -1500, 300, 1); | |
98 | ||
99 | static const struct snd_kcontrol_new wm8978_snd_controls[] = { | |
100 | ||
101 | SOC_SINGLE("Digital Loopback Switch", | |
102 | WM8978_COMPANDING_CONTROL, 0, 1, 0), | |
103 | ||
104 | SOC_ENUM("ADC Companding", adc_compand), | |
105 | SOC_ENUM("DAC Companding", dac_compand), | |
106 | ||
107 | SOC_DOUBLE("DAC Inversion Switch", WM8978_DAC_CONTROL, 0, 1, 1, 0), | |
108 | ||
109 | SOC_DOUBLE_R_TLV("PCM Volume", | |
110 | WM8978_LEFT_DAC_DIGITAL_VOLUME, WM8978_RIGHT_DAC_DIGITAL_VOLUME, | |
111 | 0, 255, 0, digital_tlv), | |
112 | ||
113 | SOC_SINGLE("High Pass Filter Switch", WM8978_ADC_CONTROL, 8, 1, 0), | |
114 | SOC_SINGLE("High Pass Cut Off", WM8978_ADC_CONTROL, 4, 7, 0), | |
115 | SOC_DOUBLE("ADC Inversion Switch", WM8978_ADC_CONTROL, 0, 1, 1, 0), | |
116 | ||
117 | SOC_DOUBLE_R_TLV("ADC Volume", | |
118 | WM8978_LEFT_ADC_DIGITAL_VOLUME, WM8978_RIGHT_ADC_DIGITAL_VOLUME, | |
119 | 0, 255, 0, digital_tlv), | |
120 | ||
121 | SOC_ENUM("Equaliser Function", eqmode), | |
122 | SOC_ENUM("EQ1 Cut Off", eq1), | |
123 | SOC_SINGLE_TLV("EQ1 Volume", WM8978_EQ1, 0, 24, 1, eq_tlv), | |
124 | ||
125 | SOC_ENUM("Equaliser EQ2 Bandwith", eq2bw), | |
126 | SOC_ENUM("EQ2 Cut Off", eq2), | |
127 | SOC_SINGLE_TLV("EQ2 Volume", WM8978_EQ2, 0, 24, 1, eq_tlv), | |
128 | ||
129 | SOC_ENUM("Equaliser EQ3 Bandwith", eq3bw), | |
130 | SOC_ENUM("EQ3 Cut Off", eq3), | |
131 | SOC_SINGLE_TLV("EQ3 Volume", WM8978_EQ3, 0, 24, 1, eq_tlv), | |
132 | ||
133 | SOC_ENUM("Equaliser EQ4 Bandwith", eq4bw), | |
134 | SOC_ENUM("EQ4 Cut Off", eq4), | |
135 | SOC_SINGLE_TLV("EQ4 Volume", WM8978_EQ4, 0, 24, 1, eq_tlv), | |
136 | ||
137 | SOC_ENUM("EQ5 Cut Off", eq5), | |
138 | SOC_SINGLE_TLV("EQ5 Volume", WM8978_EQ5, 0, 24, 1, eq_tlv), | |
139 | ||
140 | SOC_SINGLE("DAC Playback Limiter Switch", | |
141 | WM8978_DAC_LIMITER_1, 8, 1, 0), | |
142 | SOC_SINGLE("DAC Playback Limiter Decay", | |
143 | WM8978_DAC_LIMITER_1, 4, 15, 0), | |
144 | SOC_SINGLE("DAC Playback Limiter Attack", | |
145 | WM8978_DAC_LIMITER_1, 0, 15, 0), | |
146 | ||
147 | SOC_SINGLE("DAC Playback Limiter Threshold", | |
148 | WM8978_DAC_LIMITER_2, 4, 7, 0), | |
149 | SOC_SINGLE("DAC Playback Limiter Boost", | |
150 | WM8978_DAC_LIMITER_2, 0, 15, 0), | |
151 | ||
152 | SOC_ENUM("ALC Enable Switch", alc1), | |
153 | SOC_SINGLE("ALC Capture Min Gain", WM8978_ALC_CONTROL_1, 0, 7, 0), | |
154 | SOC_SINGLE("ALC Capture Max Gain", WM8978_ALC_CONTROL_1, 3, 7, 0), | |
155 | ||
156 | SOC_SINGLE("ALC Capture Hold", WM8978_ALC_CONTROL_2, 4, 7, 0), | |
157 | SOC_SINGLE("ALC Capture Target", WM8978_ALC_CONTROL_2, 0, 15, 0), | |
158 | ||
159 | SOC_ENUM("ALC Capture Mode", alc3), | |
160 | SOC_SINGLE("ALC Capture Decay", WM8978_ALC_CONTROL_3, 4, 15, 0), | |
161 | SOC_SINGLE("ALC Capture Attack", WM8978_ALC_CONTROL_3, 0, 15, 0), | |
162 | ||
163 | SOC_SINGLE("ALC Capture Noise Gate Switch", WM8978_NOISE_GATE, 3, 1, 0), | |
164 | SOC_SINGLE("ALC Capture Noise Gate Threshold", | |
165 | WM8978_NOISE_GATE, 0, 7, 0), | |
166 | ||
167 | SOC_DOUBLE_R("Capture PGA ZC Switch", | |
168 | WM8978_LEFT_INP_PGA_CONTROL, WM8978_RIGHT_INP_PGA_CONTROL, | |
169 | 7, 1, 0), | |
170 | ||
171 | /* OUT1 - Headphones */ | |
172 | SOC_DOUBLE_R("Headphone Playback ZC Switch", | |
173 | WM8978_LOUT1_HP_CONTROL, WM8978_ROUT1_HP_CONTROL, 7, 1, 0), | |
174 | ||
175 | SOC_DOUBLE_R_TLV("Headphone Playback Volume", | |
176 | WM8978_LOUT1_HP_CONTROL, WM8978_ROUT1_HP_CONTROL, | |
177 | 0, 63, 0, spk_tlv), | |
178 | ||
179 | /* OUT2 - Speakers */ | |
180 | SOC_DOUBLE_R("Speaker Playback ZC Switch", | |
181 | WM8978_LOUT2_SPK_CONTROL, WM8978_ROUT2_SPK_CONTROL, 7, 1, 0), | |
182 | ||
183 | SOC_DOUBLE_R_TLV("Speaker Playback Volume", | |
184 | WM8978_LOUT2_SPK_CONTROL, WM8978_ROUT2_SPK_CONTROL, | |
185 | 0, 63, 0, spk_tlv), | |
186 | ||
187 | /* OUT3/4 - Line Output */ | |
188 | SOC_DOUBLE_R("Line Playback Switch", | |
189 | WM8978_OUT3_MIXER_CONTROL, WM8978_OUT4_MIXER_CONTROL, 6, 1, 1), | |
190 | ||
191 | /* Mixer #3: Boost (Input) mixer */ | |
192 | SOC_DOUBLE_R("PGA Boost (+20dB)", | |
193 | WM8978_LEFT_ADC_BOOST_CONTROL, WM8978_RIGHT_ADC_BOOST_CONTROL, | |
194 | 8, 1, 0), | |
195 | SOC_DOUBLE_R_TLV("L2/R2 Boost Volume", | |
196 | WM8978_LEFT_ADC_BOOST_CONTROL, WM8978_RIGHT_ADC_BOOST_CONTROL, | |
197 | 4, 7, 0, boost_tlv), | |
198 | SOC_DOUBLE_R_TLV("Aux Boost Volume", | |
199 | WM8978_LEFT_ADC_BOOST_CONTROL, WM8978_RIGHT_ADC_BOOST_CONTROL, | |
200 | 0, 7, 0, boost_tlv), | |
201 | ||
202 | /* Input PGA volume */ | |
203 | SOC_DOUBLE_R_TLV("Input PGA Volume", | |
204 | WM8978_LEFT_INP_PGA_CONTROL, WM8978_RIGHT_INP_PGA_CONTROL, | |
205 | 0, 63, 0, inpga_tlv), | |
206 | ||
207 | /* Headphone */ | |
208 | SOC_DOUBLE_R("Headphone Switch", | |
209 | WM8978_LOUT1_HP_CONTROL, WM8978_ROUT1_HP_CONTROL, 6, 1, 1), | |
210 | ||
211 | /* Speaker */ | |
212 | SOC_DOUBLE_R("Speaker Switch", | |
213 | WM8978_LOUT2_SPK_CONTROL, WM8978_ROUT2_SPK_CONTROL, 6, 1, 1), | |
b2c3e923 GL |
214 | |
215 | /* DAC / ADC oversampling */ | |
216 | SOC_SINGLE("DAC 128x Oversampling Switch", WM8978_DAC_CONTROL, 8, 1, 0), | |
217 | SOC_SINGLE("ADC 128x Oversampling Switch", WM8978_ADC_CONTROL, 8, 1, 0), | |
0d34e915 GL |
218 | }; |
219 | ||
220 | /* Mixer #1: Output (OUT1, OUT2) Mixer: mix AUX, Input mixer output and DAC */ | |
221 | static const struct snd_kcontrol_new wm8978_left_out_mixer[] = { | |
222 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8978_LEFT_MIXER_CONTROL, 1, 1, 0), | |
223 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8978_LEFT_MIXER_CONTROL, 5, 1, 0), | |
224 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8978_LEFT_MIXER_CONTROL, 0, 1, 0), | |
225 | }; | |
226 | ||
227 | static const struct snd_kcontrol_new wm8978_right_out_mixer[] = { | |
228 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8978_RIGHT_MIXER_CONTROL, 1, 1, 0), | |
229 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8978_RIGHT_MIXER_CONTROL, 5, 1, 0), | |
230 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8978_RIGHT_MIXER_CONTROL, 0, 1, 0), | |
231 | }; | |
232 | ||
233 | /* OUT3/OUT4 Mixer not implemented */ | |
234 | ||
235 | /* Mixer #2: Input PGA Mute */ | |
236 | static const struct snd_kcontrol_new wm8978_left_input_mixer[] = { | |
237 | SOC_DAPM_SINGLE("L2 Switch", WM8978_INPUT_CONTROL, 2, 1, 0), | |
238 | SOC_DAPM_SINGLE("MicN Switch", WM8978_INPUT_CONTROL, 1, 1, 0), | |
239 | SOC_DAPM_SINGLE("MicP Switch", WM8978_INPUT_CONTROL, 0, 1, 0), | |
240 | }; | |
241 | static const struct snd_kcontrol_new wm8978_right_input_mixer[] = { | |
242 | SOC_DAPM_SINGLE("R2 Switch", WM8978_INPUT_CONTROL, 6, 1, 0), | |
243 | SOC_DAPM_SINGLE("MicN Switch", WM8978_INPUT_CONTROL, 5, 1, 0), | |
244 | SOC_DAPM_SINGLE("MicP Switch", WM8978_INPUT_CONTROL, 4, 1, 0), | |
245 | }; | |
246 | ||
247 | static const struct snd_soc_dapm_widget wm8978_dapm_widgets[] = { | |
248 | SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", | |
249 | WM8978_POWER_MANAGEMENT_3, 0, 0), | |
250 | SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", | |
251 | WM8978_POWER_MANAGEMENT_3, 1, 0), | |
252 | SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", | |
253 | WM8978_POWER_MANAGEMENT_2, 0, 0), | |
254 | SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", | |
255 | WM8978_POWER_MANAGEMENT_2, 1, 0), | |
256 | ||
257 | /* Mixer #1: OUT1,2 */ | |
258 | SOC_MIXER_ARRAY("Left Output Mixer", WM8978_POWER_MANAGEMENT_3, | |
259 | 2, 0, wm8978_left_out_mixer), | |
260 | SOC_MIXER_ARRAY("Right Output Mixer", WM8978_POWER_MANAGEMENT_3, | |
261 | 3, 0, wm8978_right_out_mixer), | |
262 | ||
263 | SOC_MIXER_ARRAY("Left Input Mixer", WM8978_POWER_MANAGEMENT_2, | |
264 | 2, 0, wm8978_left_input_mixer), | |
265 | SOC_MIXER_ARRAY("Right Input Mixer", WM8978_POWER_MANAGEMENT_2, | |
266 | 3, 0, wm8978_right_input_mixer), | |
267 | ||
268 | SND_SOC_DAPM_PGA("Left Boost Mixer", WM8978_POWER_MANAGEMENT_2, | |
269 | 4, 0, NULL, 0), | |
270 | SND_SOC_DAPM_PGA("Right Boost Mixer", WM8978_POWER_MANAGEMENT_2, | |
271 | 5, 0, NULL, 0), | |
272 | ||
273 | SND_SOC_DAPM_PGA("Left Capture PGA", WM8978_LEFT_INP_PGA_CONTROL, | |
274 | 6, 1, NULL, 0), | |
275 | SND_SOC_DAPM_PGA("Right Capture PGA", WM8978_RIGHT_INP_PGA_CONTROL, | |
276 | 6, 1, NULL, 0), | |
277 | ||
278 | SND_SOC_DAPM_PGA("Left Headphone Out", WM8978_POWER_MANAGEMENT_2, | |
279 | 7, 0, NULL, 0), | |
280 | SND_SOC_DAPM_PGA("Right Headphone Out", WM8978_POWER_MANAGEMENT_2, | |
281 | 8, 0, NULL, 0), | |
282 | ||
283 | SND_SOC_DAPM_PGA("Left Speaker Out", WM8978_POWER_MANAGEMENT_3, | |
284 | 6, 0, NULL, 0), | |
285 | SND_SOC_DAPM_PGA("Right Speaker Out", WM8978_POWER_MANAGEMENT_3, | |
286 | 5, 0, NULL, 0), | |
287 | ||
288 | SND_SOC_DAPM_MIXER("OUT4 VMID", WM8978_POWER_MANAGEMENT_3, | |
289 | 8, 0, NULL, 0), | |
290 | ||
291 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8978_POWER_MANAGEMENT_1, 4, 0), | |
292 | ||
293 | SND_SOC_DAPM_INPUT("LMICN"), | |
294 | SND_SOC_DAPM_INPUT("LMICP"), | |
295 | SND_SOC_DAPM_INPUT("RMICN"), | |
296 | SND_SOC_DAPM_INPUT("RMICP"), | |
297 | SND_SOC_DAPM_INPUT("LAUX"), | |
298 | SND_SOC_DAPM_INPUT("RAUX"), | |
299 | SND_SOC_DAPM_INPUT("L2"), | |
300 | SND_SOC_DAPM_INPUT("R2"), | |
301 | SND_SOC_DAPM_OUTPUT("LHP"), | |
302 | SND_SOC_DAPM_OUTPUT("RHP"), | |
303 | SND_SOC_DAPM_OUTPUT("LSPK"), | |
304 | SND_SOC_DAPM_OUTPUT("RSPK"), | |
305 | }; | |
306 | ||
307 | static const struct snd_soc_dapm_route audio_map[] = { | |
308 | /* Output mixer */ | |
309 | {"Right Output Mixer", "PCM Playback Switch", "Right DAC"}, | |
310 | {"Right Output Mixer", "Aux Playback Switch", "RAUX"}, | |
311 | {"Right Output Mixer", "Line Bypass Switch", "Right Boost Mixer"}, | |
312 | ||
313 | {"Left Output Mixer", "PCM Playback Switch", "Left DAC"}, | |
314 | {"Left Output Mixer", "Aux Playback Switch", "LAUX"}, | |
315 | {"Left Output Mixer", "Line Bypass Switch", "Left Boost Mixer"}, | |
316 | ||
317 | /* Outputs */ | |
318 | {"Right Headphone Out", NULL, "Right Output Mixer"}, | |
319 | {"RHP", NULL, "Right Headphone Out"}, | |
320 | ||
321 | {"Left Headphone Out", NULL, "Left Output Mixer"}, | |
322 | {"LHP", NULL, "Left Headphone Out"}, | |
323 | ||
324 | {"Right Speaker Out", NULL, "Right Output Mixer"}, | |
325 | {"RSPK", NULL, "Right Speaker Out"}, | |
326 | ||
327 | {"Left Speaker Out", NULL, "Left Output Mixer"}, | |
328 | {"LSPK", NULL, "Left Speaker Out"}, | |
329 | ||
330 | /* Boost Mixer */ | |
331 | {"Right ADC", NULL, "Right Boost Mixer"}, | |
332 | ||
333 | {"Right Boost Mixer", NULL, "RAUX"}, | |
334 | {"Right Boost Mixer", NULL, "Right Capture PGA"}, | |
335 | {"Right Boost Mixer", NULL, "R2"}, | |
336 | ||
337 | {"Left ADC", NULL, "Left Boost Mixer"}, | |
338 | ||
339 | {"Left Boost Mixer", NULL, "LAUX"}, | |
340 | {"Left Boost Mixer", NULL, "Left Capture PGA"}, | |
341 | {"Left Boost Mixer", NULL, "L2"}, | |
342 | ||
343 | /* Input PGA */ | |
344 | {"Right Capture PGA", NULL, "Right Input Mixer"}, | |
345 | {"Left Capture PGA", NULL, "Left Input Mixer"}, | |
346 | ||
347 | {"Right Input Mixer", "R2 Switch", "R2"}, | |
348 | {"Right Input Mixer", "MicN Switch", "RMICN"}, | |
349 | {"Right Input Mixer", "MicP Switch", "RMICP"}, | |
350 | ||
351 | {"Left Input Mixer", "L2 Switch", "L2"}, | |
352 | {"Left Input Mixer", "MicN Switch", "LMICN"}, | |
353 | {"Left Input Mixer", "MicP Switch", "LMICP"}, | |
354 | }; | |
355 | ||
356 | static int wm8978_add_widgets(struct snd_soc_codec *codec) | |
357 | { | |
358 | snd_soc_dapm_new_controls(codec, wm8978_dapm_widgets, | |
359 | ARRAY_SIZE(wm8978_dapm_widgets)); | |
360 | ||
361 | /* set up the WM8978 audio map */ | |
362 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
367 | /* PLL divisors */ | |
368 | struct wm8978_pll_div { | |
369 | u32 k; | |
370 | u8 n; | |
371 | u8 div2; | |
372 | }; | |
373 | ||
374 | #define FIXED_PLL_SIZE (1 << 24) | |
375 | ||
376 | static void pll_factors(struct wm8978_pll_div *pll_div, unsigned int target, | |
377 | unsigned int source) | |
378 | { | |
379 | u64 k_part; | |
380 | unsigned int k, n_div, n_mod; | |
381 | ||
382 | n_div = target / source; | |
383 | if (n_div < 6) { | |
384 | source >>= 1; | |
385 | pll_div->div2 = 1; | |
386 | n_div = target / source; | |
387 | } else { | |
388 | pll_div->div2 = 0; | |
389 | } | |
390 | ||
391 | if (n_div < 6 || n_div > 12) | |
392 | dev_warn(wm8978_codec->dev, | |
393 | "WM8978 N value exceeds recommended range! N = %u\n", | |
394 | n_div); | |
395 | ||
396 | pll_div->n = n_div; | |
397 | n_mod = target - source * n_div; | |
398 | k_part = FIXED_PLL_SIZE * (long long)n_mod + source / 2; | |
399 | ||
400 | do_div(k_part, source); | |
401 | ||
402 | k = k_part & 0xFFFFFFFF; | |
403 | ||
404 | pll_div->k = k; | |
405 | } | |
b0580913 GL |
406 | |
407 | /* MCLK dividers */ | |
408 | static const int mclk_numerator[] = {1, 3, 2, 3, 4, 6, 8, 12}; | |
409 | static const int mclk_denominator[] = {1, 2, 1, 1, 1, 1, 1, 1}; | |
410 | ||
411 | /* | |
412 | * find index >= idx, such that, for a given f_out, | |
413 | * 3 * f_mclk / 4 <= f_PLLOUT < 13 * f_mclk / 4 | |
414 | * f_out can be f_256fs or f_opclk, currently only used for f_256fs. Can be | |
415 | * generalised for f_opclk with suitable coefficient arrays, but currently | |
416 | * the OPCLK divisor is calculated directly, not iteratively. | |
417 | */ | |
418 | static int wm8978_enum_mclk(unsigned int f_out, unsigned int f_mclk, | |
419 | unsigned int *f_pllout) | |
420 | { | |
421 | int i; | |
422 | ||
423 | for (i = 0; i < ARRAY_SIZE(mclk_numerator); i++) { | |
424 | unsigned int f_pllout_x4 = 4 * f_out * mclk_numerator[i] / | |
425 | mclk_denominator[i]; | |
426 | if (3 * f_mclk <= f_pllout_x4 && f_pllout_x4 < 13 * f_mclk) { | |
427 | *f_pllout = f_pllout_x4 / 4; | |
428 | return i; | |
429 | } | |
430 | } | |
431 | ||
432 | return -EINVAL; | |
433 | } | |
434 | ||
0d34e915 GL |
435 | /* |
436 | * Calculate internal frequencies and dividers, according to Figure 40 | |
437 | * "PLL and Clock Select Circuit" in WM8978 datasheet Rev. 2.6 | |
438 | */ | |
439 | static int wm8978_configure_pll(struct snd_soc_codec *codec) | |
440 | { | |
441 | struct wm8978_priv *wm8978 = codec->private_data; | |
442 | struct wm8978_pll_div pll_div; | |
443 | unsigned int f_opclk = wm8978->f_opclk, f_mclk = wm8978->f_mclk, | |
444 | f_256fs = wm8978->f_256fs; | |
b0580913 | 445 | unsigned int f2; |
0d34e915 GL |
446 | |
447 | if (!f_mclk) | |
448 | return -EINVAL; | |
449 | ||
450 | if (f_opclk) { | |
b0580913 GL |
451 | unsigned int opclk_div; |
452 | /* Cannot set up MCLK divider now, do later */ | |
453 | wm8978->mclk_idx = -1; | |
454 | ||
0d34e915 GL |
455 | /* |
456 | * The user needs OPCLK. Choose OPCLKDIV to put | |
457 | * 6 <= R = f2 / f1 < 13, 1 <= OPCLKDIV <= 4. | |
458 | * f_opclk = f_mclk * prescale * R / 4 / OPCLKDIV, where | |
459 | * prescale = 1, or prescale = 2. Prescale is calculated inside | |
460 | * pll_factors(). We have to select f_PLLOUT, such that | |
461 | * f_mclk * 3 / 4 <= f_PLLOUT < f_mclk * 13 / 4. Must be | |
462 | * f_mclk * 3 / 16 <= f_opclk < f_mclk * 13 / 4. | |
463 | */ | |
464 | if (16 * f_opclk < 3 * f_mclk || 4 * f_opclk >= 13 * f_mclk) | |
465 | return -EINVAL; | |
466 | ||
467 | if (4 * f_opclk < 3 * f_mclk) | |
468 | /* Have to use OPCLKDIV */ | |
469 | opclk_div = (3 * f_mclk / 4 + f_opclk - 1) / f_opclk; | |
470 | else | |
471 | opclk_div = 1; | |
472 | ||
473 | dev_dbg(codec->dev, "%s: OPCLKDIV=%d\n", __func__, opclk_div); | |
474 | ||
475 | snd_soc_update_bits(codec, WM8978_GPIO_CONTROL, 0x30, | |
476 | (opclk_div - 1) << 4); | |
477 | ||
478 | wm8978->f_pllout = f_opclk * opclk_div; | |
479 | } else if (f_256fs) { | |
480 | /* | |
b0580913 | 481 | * Not using OPCLK, but PLL is used for the codec, choose R: |
0d34e915 GL |
482 | * 6 <= R = f2 / f1 < 13, to put 1 <= MCLKDIV <= 12. |
483 | * f_256fs = f_mclk * prescale * R / 4 / MCLKDIV, where | |
484 | * prescale = 1, or prescale = 2. Prescale is calculated inside | |
485 | * pll_factors(). We have to select f_PLLOUT, such that | |
486 | * f_mclk * 3 / 4 <= f_PLLOUT < f_mclk * 13 / 4. Must be | |
487 | * f_mclk * 3 / 48 <= f_256fs < f_mclk * 13 / 4. This means MCLK | |
488 | * must be 3.781MHz <= f_MCLK <= 32.768MHz | |
489 | */ | |
b0580913 GL |
490 | int idx = wm8978_enum_mclk(f_256fs, f_mclk, &wm8978->f_pllout); |
491 | if (idx < 0) | |
492 | return idx; | |
0d34e915 | 493 | |
b0580913 | 494 | wm8978->mclk_idx = idx; |
0d34e915 GL |
495 | |
496 | /* GPIO1 into default mode as input - before configuring PLL */ | |
497 | snd_soc_update_bits(codec, WM8978_GPIO_CONTROL, 7, 0); | |
498 | } else { | |
499 | return -EINVAL; | |
500 | } | |
501 | ||
502 | f2 = wm8978->f_pllout * 4; | |
503 | ||
504 | dev_dbg(codec->dev, "%s: f_MCLK=%uHz, f_PLLOUT=%uHz\n", __func__, | |
505 | wm8978->f_mclk, wm8978->f_pllout); | |
506 | ||
507 | pll_factors(&pll_div, f2, wm8978->f_mclk); | |
508 | ||
509 | dev_dbg(codec->dev, "%s: calculated PLL N=0x%x, K=0x%x, div2=%d\n", | |
510 | __func__, pll_div.n, pll_div.k, pll_div.div2); | |
511 | ||
512 | /* Turn PLL off for configuration... */ | |
513 | snd_soc_update_bits(codec, WM8978_POWER_MANAGEMENT_1, 0x20, 0); | |
514 | ||
515 | snd_soc_write(codec, WM8978_PLL_N, (pll_div.div2 << 4) | pll_div.n); | |
516 | snd_soc_write(codec, WM8978_PLL_K1, pll_div.k >> 18); | |
517 | snd_soc_write(codec, WM8978_PLL_K2, (pll_div.k >> 9) & 0x1ff); | |
518 | snd_soc_write(codec, WM8978_PLL_K3, pll_div.k & 0x1ff); | |
519 | ||
520 | /* ...and on again */ | |
521 | snd_soc_update_bits(codec, WM8978_POWER_MANAGEMENT_1, 0x20, 0x20); | |
522 | ||
523 | if (f_opclk) | |
524 | /* Output PLL (OPCLK) to GPIO1 */ | |
525 | snd_soc_update_bits(codec, WM8978_GPIO_CONTROL, 7, 4); | |
526 | ||
527 | return 0; | |
528 | } | |
529 | ||
530 | /* | |
531 | * Configure WM8978 clock dividers. | |
532 | */ | |
533 | static int wm8978_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
534 | int div_id, int div) | |
535 | { | |
536 | struct snd_soc_codec *codec = codec_dai->codec; | |
537 | struct wm8978_priv *wm8978 = codec->private_data; | |
538 | int ret = 0; | |
539 | ||
540 | switch (div_id) { | |
541 | case WM8978_OPCLKRATE: | |
542 | wm8978->f_opclk = div; | |
543 | ||
544 | if (wm8978->f_mclk) | |
b0580913 GL |
545 | /* |
546 | * We know the MCLK frequency, the user has requested | |
547 | * OPCLK, configure the PLL based on that and start it | |
548 | * and OPCLK immediately. We will configure PLL to match | |
549 | * user-requested OPCLK frquency as good as possible. | |
550 | * In fact, it is likely, that matching the sampling | |
551 | * rate, when it becomes known, is more important, and | |
552 | * we will not be reconfiguring PLL then, because we | |
553 | * must not interrupt OPCLK. But it should be fine, | |
554 | * because typically the user will request OPCLK to run | |
555 | * at 256fs or 512fs, and for these cases we will also | |
556 | * find an exact MCLK divider configuration - it will | |
557 | * be equal to or double the OPCLK divisor. | |
558 | */ | |
0d34e915 GL |
559 | ret = wm8978_configure_pll(codec); |
560 | break; | |
0d34e915 GL |
561 | case WM8978_BCLKDIV: |
562 | if (div & ~0x1c) | |
563 | return -EINVAL; | |
564 | snd_soc_update_bits(codec, WM8978_CLOCKING, 0x1c, div); | |
565 | break; | |
566 | default: | |
567 | return -EINVAL; | |
568 | } | |
569 | ||
570 | dev_dbg(codec->dev, "%s: ID %d, value %u\n", __func__, div_id, div); | |
571 | ||
572 | return ret; | |
573 | } | |
574 | ||
575 | /* | |
576 | * @freq: when .set_pll() us not used, freq is codec MCLK input frequency | |
577 | */ | |
578 | static int wm8978_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, | |
579 | unsigned int freq, int dir) | |
580 | { | |
581 | struct snd_soc_codec *codec = codec_dai->codec; | |
582 | struct wm8978_priv *wm8978 = codec->private_data; | |
583 | int ret = 0; | |
584 | ||
585 | dev_dbg(codec->dev, "%s: ID %d, freq %u\n", __func__, clk_id, freq); | |
586 | ||
587 | if (freq) { | |
588 | wm8978->f_mclk = freq; | |
589 | ||
590 | /* Even if MCLK is used for system clock, might have to drive OPCLK */ | |
591 | if (wm8978->f_opclk) | |
592 | ret = wm8978_configure_pll(codec); | |
593 | ||
594 | /* Our sysclk is fixed to 256 * fs, will configure in .hw_params() */ | |
595 | ||
596 | if (!ret) | |
597 | wm8978->sysclk = clk_id; | |
598 | } | |
599 | ||
600 | if (wm8978->sysclk == WM8978_PLL && (!freq || clk_id == WM8978_MCLK)) { | |
601 | /* Clock CODEC directly from MCLK */ | |
602 | snd_soc_update_bits(codec, WM8978_CLOCKING, 0x100, 0); | |
603 | ||
604 | /* GPIO1 into default mode as input - before configuring PLL */ | |
605 | snd_soc_update_bits(codec, WM8978_GPIO_CONTROL, 7, 0); | |
606 | ||
607 | /* Turn off PLL */ | |
608 | snd_soc_update_bits(codec, WM8978_POWER_MANAGEMENT_1, 0x20, 0); | |
609 | wm8978->sysclk = WM8978_MCLK; | |
610 | wm8978->f_pllout = 0; | |
611 | wm8978->f_opclk = 0; | |
612 | } | |
613 | ||
614 | return ret; | |
615 | } | |
616 | ||
617 | /* | |
618 | * Set ADC and Voice DAC format. | |
619 | */ | |
620 | static int wm8978_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) | |
621 | { | |
622 | struct snd_soc_codec *codec = codec_dai->codec; | |
623 | /* | |
624 | * BCLK polarity mask = 0x100, LRC clock polarity mask = 0x80, | |
625 | * Data Format mask = 0x18: all will be calculated anew | |
626 | */ | |
627 | u16 iface = snd_soc_read(codec, WM8978_AUDIO_INTERFACE) & ~0x198; | |
628 | u16 clk = snd_soc_read(codec, WM8978_CLOCKING); | |
629 | ||
630 | dev_dbg(codec->dev, "%s\n", __func__); | |
631 | ||
632 | /* set master/slave audio interface */ | |
633 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
634 | case SND_SOC_DAIFMT_CBM_CFM: | |
635 | clk |= 1; | |
636 | break; | |
637 | case SND_SOC_DAIFMT_CBS_CFS: | |
638 | clk &= ~1; | |
639 | break; | |
640 | default: | |
641 | return -EINVAL; | |
642 | } | |
643 | ||
644 | /* interface format */ | |
645 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
646 | case SND_SOC_DAIFMT_I2S: | |
647 | iface |= 0x10; | |
648 | break; | |
649 | case SND_SOC_DAIFMT_RIGHT_J: | |
650 | break; | |
651 | case SND_SOC_DAIFMT_LEFT_J: | |
652 | iface |= 0x8; | |
653 | break; | |
654 | case SND_SOC_DAIFMT_DSP_A: | |
655 | iface |= 0x18; | |
656 | break; | |
657 | default: | |
658 | return -EINVAL; | |
659 | } | |
660 | ||
661 | /* clock inversion */ | |
662 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
663 | case SND_SOC_DAIFMT_NB_NF: | |
664 | break; | |
665 | case SND_SOC_DAIFMT_IB_IF: | |
666 | iface |= 0x180; | |
667 | break; | |
668 | case SND_SOC_DAIFMT_IB_NF: | |
669 | iface |= 0x100; | |
670 | break; | |
671 | case SND_SOC_DAIFMT_NB_IF: | |
672 | iface |= 0x80; | |
673 | break; | |
674 | default: | |
675 | return -EINVAL; | |
676 | } | |
677 | ||
678 | snd_soc_write(codec, WM8978_AUDIO_INTERFACE, iface); | |
679 | snd_soc_write(codec, WM8978_CLOCKING, clk); | |
680 | ||
681 | return 0; | |
682 | } | |
683 | ||
0d34e915 GL |
684 | /* |
685 | * Set PCM DAI bit size and sample rate. | |
686 | */ | |
687 | static int wm8978_hw_params(struct snd_pcm_substream *substream, | |
688 | struct snd_pcm_hw_params *params, | |
689 | struct snd_soc_dai *dai) | |
690 | { | |
691 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
692 | struct snd_soc_device *socdev = rtd->socdev; | |
693 | struct snd_soc_codec *codec = socdev->card->codec; | |
694 | struct wm8978_priv *wm8978 = codec->private_data; | |
695 | /* Word length mask = 0x60 */ | |
696 | u16 iface_ctl = snd_soc_read(codec, WM8978_AUDIO_INTERFACE) & ~0x60; | |
697 | /* Sampling rate mask = 0xe (for filters) */ | |
698 | u16 add_ctl = snd_soc_read(codec, WM8978_ADDITIONAL_CONTROL) & ~0xe; | |
699 | u16 clking = snd_soc_read(codec, WM8978_CLOCKING); | |
700 | enum wm8978_sysclk_src current_clk_id = clking & 0x100 ? | |
701 | WM8978_PLL : WM8978_MCLK; | |
702 | unsigned int f_sel, diff, diff_best = INT_MAX; | |
703 | int i, best = 0; | |
704 | ||
705 | if (!wm8978->f_mclk) | |
706 | return -EINVAL; | |
707 | ||
708 | /* bit size */ | |
709 | switch (params_format(params)) { | |
710 | case SNDRV_PCM_FORMAT_S16_LE: | |
711 | break; | |
712 | case SNDRV_PCM_FORMAT_S20_3LE: | |
713 | iface_ctl |= 0x20; | |
714 | break; | |
715 | case SNDRV_PCM_FORMAT_S24_LE: | |
716 | iface_ctl |= 0x40; | |
717 | break; | |
718 | case SNDRV_PCM_FORMAT_S32_LE: | |
719 | iface_ctl |= 0x60; | |
720 | break; | |
721 | } | |
722 | ||
723 | /* filter coefficient */ | |
724 | switch (params_rate(params)) { | |
725 | case 8000: | |
726 | add_ctl |= 0x5 << 1; | |
727 | break; | |
728 | case 11025: | |
729 | add_ctl |= 0x4 << 1; | |
730 | break; | |
731 | case 16000: | |
732 | add_ctl |= 0x3 << 1; | |
733 | break; | |
734 | case 22050: | |
735 | add_ctl |= 0x2 << 1; | |
736 | break; | |
737 | case 32000: | |
738 | add_ctl |= 0x1 << 1; | |
739 | break; | |
740 | case 44100: | |
741 | case 48000: | |
742 | break; | |
743 | } | |
744 | ||
745 | /* Sampling rate is known now, can configure the MCLK divider */ | |
746 | wm8978->f_256fs = params_rate(params) * 256; | |
747 | ||
748 | if (wm8978->sysclk == WM8978_MCLK) { | |
b0580913 | 749 | wm8978->mclk_idx = -1; |
0d34e915 GL |
750 | f_sel = wm8978->f_mclk; |
751 | } else { | |
752 | if (!wm8978->f_pllout) { | |
b0580913 | 753 | /* We only enter here, if OPCLK is not used */ |
0d34e915 GL |
754 | int ret = wm8978_configure_pll(codec); |
755 | if (ret < 0) | |
756 | return ret; | |
757 | } | |
758 | f_sel = wm8978->f_pllout; | |
759 | } | |
760 | ||
b0580913 GL |
761 | if (wm8978->mclk_idx < 0) { |
762 | /* Either MCLK is used directly, or OPCLK is used */ | |
763 | if (f_sel < wm8978->f_256fs || f_sel > 12 * wm8978->f_256fs) | |
764 | return -EINVAL; | |
0d34e915 | 765 | |
b0580913 GL |
766 | for (i = 0; i < ARRAY_SIZE(mclk_numerator); i++) { |
767 | diff = abs(wm8978->f_256fs * 3 - | |
768 | f_sel * 3 * mclk_denominator[i] / mclk_numerator[i]); | |
0d34e915 | 769 | |
b0580913 GL |
770 | if (diff < diff_best) { |
771 | diff_best = diff; | |
772 | best = i; | |
773 | } | |
0d34e915 | 774 | |
b0580913 GL |
775 | if (!diff) |
776 | break; | |
777 | } | |
778 | } else { | |
779 | /* OPCLK not used, codec driven by PLL */ | |
780 | best = wm8978->mclk_idx; | |
781 | diff = 0; | |
0d34e915 GL |
782 | } |
783 | ||
784 | if (diff) | |
b0580913 GL |
785 | dev_warn(codec->dev, "Imprecise sampling rate: %uHz%s\n", |
786 | f_sel * mclk_denominator[best] / mclk_numerator[best] / 256, | |
787 | wm8978->sysclk == WM8978_MCLK ? | |
788 | ", consider using PLL" : ""); | |
0d34e915 GL |
789 | |
790 | dev_dbg(codec->dev, "%s: fmt %d, rate %u, MCLK divisor #%d\n", __func__, | |
791 | params_format(params), params_rate(params), best); | |
792 | ||
793 | /* MCLK divisor mask = 0xe0 */ | |
794 | snd_soc_update_bits(codec, WM8978_CLOCKING, 0xe0, best << 5); | |
795 | ||
796 | snd_soc_write(codec, WM8978_AUDIO_INTERFACE, iface_ctl); | |
797 | snd_soc_write(codec, WM8978_ADDITIONAL_CONTROL, add_ctl); | |
798 | ||
799 | if (wm8978->sysclk != current_clk_id) { | |
800 | if (wm8978->sysclk == WM8978_PLL) | |
801 | /* Run CODEC from PLL instead of MCLK */ | |
802 | snd_soc_update_bits(codec, WM8978_CLOCKING, | |
803 | 0x100, 0x100); | |
804 | else | |
805 | /* Clock CODEC directly from MCLK */ | |
806 | snd_soc_update_bits(codec, WM8978_CLOCKING, 0x100, 0); | |
807 | } | |
808 | ||
809 | return 0; | |
810 | } | |
811 | ||
812 | static int wm8978_mute(struct snd_soc_dai *dai, int mute) | |
813 | { | |
814 | struct snd_soc_codec *codec = dai->codec; | |
815 | ||
816 | dev_dbg(codec->dev, "%s: %d\n", __func__, mute); | |
817 | ||
818 | if (mute) | |
819 | snd_soc_update_bits(codec, WM8978_DAC_CONTROL, 0x40, 0x40); | |
820 | else | |
821 | snd_soc_update_bits(codec, WM8978_DAC_CONTROL, 0x40, 0); | |
822 | ||
823 | return 0; | |
824 | } | |
825 | ||
826 | static int wm8978_set_bias_level(struct snd_soc_codec *codec, | |
827 | enum snd_soc_bias_level level) | |
828 | { | |
829 | u16 power1 = snd_soc_read(codec, WM8978_POWER_MANAGEMENT_1) & ~3; | |
830 | ||
831 | switch (level) { | |
832 | case SND_SOC_BIAS_ON: | |
833 | case SND_SOC_BIAS_PREPARE: | |
834 | power1 |= 1; /* VMID 75k */ | |
835 | snd_soc_write(codec, WM8978_POWER_MANAGEMENT_1, power1); | |
836 | break; | |
837 | case SND_SOC_BIAS_STANDBY: | |
838 | /* bit 3: enable bias, bit 2: enable I/O tie off buffer */ | |
839 | power1 |= 0xc; | |
840 | ||
841 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
842 | /* Initial cap charge at VMID 5k */ | |
843 | snd_soc_write(codec, WM8978_POWER_MANAGEMENT_1, | |
844 | power1 | 0x3); | |
845 | mdelay(100); | |
846 | } | |
847 | ||
848 | power1 |= 0x2; /* VMID 500k */ | |
849 | snd_soc_write(codec, WM8978_POWER_MANAGEMENT_1, power1); | |
850 | break; | |
851 | case SND_SOC_BIAS_OFF: | |
852 | /* Preserve PLL - OPCLK may be used by someone */ | |
853 | snd_soc_update_bits(codec, WM8978_POWER_MANAGEMENT_1, ~0x20, 0); | |
854 | snd_soc_write(codec, WM8978_POWER_MANAGEMENT_2, 0); | |
855 | snd_soc_write(codec, WM8978_POWER_MANAGEMENT_3, 0); | |
856 | break; | |
857 | } | |
858 | ||
859 | dev_dbg(codec->dev, "%s: %d, %x\n", __func__, level, power1); | |
860 | ||
861 | codec->bias_level = level; | |
862 | return 0; | |
863 | } | |
864 | ||
865 | #define WM8978_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ | |
866 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
867 | ||
868 | static struct snd_soc_dai_ops wm8978_dai_ops = { | |
869 | .hw_params = wm8978_hw_params, | |
870 | .digital_mute = wm8978_mute, | |
871 | .set_fmt = wm8978_set_dai_fmt, | |
872 | .set_clkdiv = wm8978_set_dai_clkdiv, | |
873 | .set_sysclk = wm8978_set_dai_sysclk, | |
874 | }; | |
875 | ||
876 | /* Also supports 12kHz */ | |
877 | struct snd_soc_dai wm8978_dai = { | |
878 | .name = "WM8978 HiFi", | |
879 | .id = 1, | |
880 | .playback = { | |
881 | .stream_name = "Playback", | |
882 | .channels_min = 1, | |
883 | .channels_max = 2, | |
884 | .rates = SNDRV_PCM_RATE_8000_48000, | |
885 | .formats = WM8978_FORMATS, | |
886 | }, | |
887 | .capture = { | |
888 | .stream_name = "Capture", | |
889 | .channels_min = 1, | |
890 | .channels_max = 2, | |
891 | .rates = SNDRV_PCM_RATE_8000_48000, | |
892 | .formats = WM8978_FORMATS, | |
893 | }, | |
894 | .ops = &wm8978_dai_ops, | |
895 | }; | |
896 | EXPORT_SYMBOL_GPL(wm8978_dai); | |
897 | ||
898 | static int wm8978_suspend(struct platform_device *pdev, pm_message_t state) | |
899 | { | |
900 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
901 | struct snd_soc_codec *codec = socdev->card->codec; | |
902 | ||
903 | wm8978_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
904 | /* Also switch PLL off */ | |
905 | snd_soc_write(codec, WM8978_POWER_MANAGEMENT_1, 0); | |
0d34e915 GL |
906 | |
907 | return 0; | |
908 | } | |
909 | ||
910 | static int wm8978_resume(struct platform_device *pdev) | |
911 | { | |
912 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
913 | struct snd_soc_codec *codec = socdev->card->codec; | |
914 | struct wm8978_priv *wm8978 = codec->private_data; | |
915 | int i; | |
916 | u16 *cache = codec->reg_cache; | |
917 | ||
0d34e915 GL |
918 | /* Sync reg_cache with the hardware */ |
919 | for (i = 0; i < ARRAY_SIZE(wm8978_reg); i++) { | |
920 | if (i == WM8978_RESET) | |
921 | continue; | |
922 | if (cache[i] != wm8978_reg[i]) | |
923 | snd_soc_write(codec, i, cache[i]); | |
924 | } | |
925 | ||
926 | wm8978_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
927 | ||
928 | if (wm8978->f_pllout) | |
929 | /* Switch PLL on */ | |
930 | snd_soc_update_bits(codec, WM8978_POWER_MANAGEMENT_1, 0x20, 0x20); | |
931 | ||
932 | return 0; | |
933 | } | |
934 | ||
935 | static int wm8978_probe(struct platform_device *pdev) | |
936 | { | |
937 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
938 | struct snd_soc_codec *codec; | |
939 | int ret = 0; | |
940 | ||
941 | if (wm8978_codec == NULL) { | |
942 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
943 | return -ENODEV; | |
944 | } | |
945 | ||
946 | socdev->card->codec = wm8978_codec; | |
947 | codec = wm8978_codec; | |
948 | ||
949 | /* register pcms */ | |
950 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
951 | if (ret < 0) { | |
952 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); | |
953 | goto pcm_err; | |
954 | } | |
955 | ||
956 | snd_soc_add_controls(codec, wm8978_snd_controls, | |
957 | ARRAY_SIZE(wm8978_snd_controls)); | |
958 | wm8978_add_widgets(codec); | |
959 | ||
960 | pcm_err: | |
961 | return ret; | |
962 | } | |
963 | ||
964 | /* power down chip */ | |
965 | static int wm8978_remove(struct platform_device *pdev) | |
966 | { | |
967 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
968 | ||
969 | snd_soc_free_pcms(socdev); | |
970 | snd_soc_dapm_free(socdev); | |
971 | ||
972 | return 0; | |
973 | } | |
974 | ||
975 | struct snd_soc_codec_device soc_codec_dev_wm8978 = { | |
976 | .probe = wm8978_probe, | |
977 | .remove = wm8978_remove, | |
978 | .suspend = wm8978_suspend, | |
979 | .resume = wm8978_resume, | |
980 | }; | |
981 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8978); | |
982 | ||
983 | /* | |
984 | * These registers contain an "update" bit - bit 8. This means, for example, | |
985 | * that one can write new DAC digital volume for both channels, but only when | |
986 | * the update bit is set, will also the volume be updated - simultaneously for | |
987 | * both channels. | |
988 | */ | |
989 | static const int update_reg[] = { | |
990 | WM8978_LEFT_DAC_DIGITAL_VOLUME, | |
991 | WM8978_RIGHT_DAC_DIGITAL_VOLUME, | |
992 | WM8978_LEFT_ADC_DIGITAL_VOLUME, | |
993 | WM8978_RIGHT_ADC_DIGITAL_VOLUME, | |
994 | WM8978_LEFT_INP_PGA_CONTROL, | |
995 | WM8978_RIGHT_INP_PGA_CONTROL, | |
996 | WM8978_LOUT1_HP_CONTROL, | |
997 | WM8978_ROUT1_HP_CONTROL, | |
998 | WM8978_LOUT2_SPK_CONTROL, | |
999 | WM8978_ROUT2_SPK_CONTROL, | |
1000 | }; | |
1001 | ||
1002 | static __devinit int wm8978_register(struct wm8978_priv *wm8978) | |
1003 | { | |
1004 | int ret, i; | |
1005 | struct snd_soc_codec *codec = &wm8978->codec; | |
1006 | ||
1007 | if (wm8978_codec) { | |
1008 | dev_err(codec->dev, "Another WM8978 is registered\n"); | |
1009 | return -EINVAL; | |
1010 | } | |
1011 | ||
1012 | /* | |
1013 | * Set default system clock to PLL, it is more precise, this is also the | |
1014 | * default hardware setting | |
1015 | */ | |
1016 | wm8978->sysclk = WM8978_PLL; | |
1017 | ||
1018 | mutex_init(&codec->mutex); | |
1019 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
1020 | INIT_LIST_HEAD(&codec->dapm_paths); | |
1021 | ||
1022 | codec->private_data = wm8978; | |
1023 | codec->name = "WM8978"; | |
1024 | codec->owner = THIS_MODULE; | |
1025 | codec->bias_level = SND_SOC_BIAS_OFF; | |
1026 | codec->set_bias_level = wm8978_set_bias_level; | |
1027 | codec->dai = &wm8978_dai; | |
1028 | codec->num_dai = 1; | |
1029 | codec->reg_cache_size = WM8978_CACHEREGNUM; | |
1030 | codec->reg_cache = &wm8978->reg_cache; | |
1031 | ||
1032 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C); | |
1033 | if (ret < 0) { | |
1034 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
1035 | goto err; | |
1036 | } | |
1037 | ||
1038 | memcpy(codec->reg_cache, wm8978_reg, sizeof(wm8978_reg)); | |
1039 | ||
1040 | /* | |
1041 | * Set the update bit in all registers, that have one. This way all | |
1042 | * writes to those registers will also cause the update bit to be | |
1043 | * written. | |
1044 | */ | |
1045 | for (i = 0; i < ARRAY_SIZE(update_reg); i++) | |
1046 | ((u16 *)codec->reg_cache)[update_reg[i]] |= 0x100; | |
1047 | ||
1048 | /* Reset the codec */ | |
1049 | ret = snd_soc_write(codec, WM8978_RESET, 0); | |
1050 | if (ret < 0) { | |
1051 | dev_err(codec->dev, "Failed to issue reset\n"); | |
1052 | goto err; | |
1053 | } | |
1054 | ||
1055 | wm8978_dai.dev = codec->dev; | |
1056 | ||
1057 | wm8978_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
1058 | ||
1059 | wm8978_codec = codec; | |
1060 | ||
1061 | ret = snd_soc_register_codec(codec); | |
1062 | if (ret != 0) { | |
1063 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
1064 | goto err; | |
1065 | } | |
1066 | ||
1067 | ret = snd_soc_register_dai(&wm8978_dai); | |
1068 | if (ret != 0) { | |
1069 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
1070 | goto err_codec; | |
1071 | } | |
1072 | ||
1073 | return 0; | |
1074 | ||
1075 | err_codec: | |
1076 | snd_soc_unregister_codec(codec); | |
1077 | err: | |
1078 | kfree(wm8978); | |
1079 | return ret; | |
1080 | } | |
1081 | ||
1082 | static __devexit void wm8978_unregister(struct wm8978_priv *wm8978) | |
1083 | { | |
1084 | wm8978_set_bias_level(&wm8978->codec, SND_SOC_BIAS_OFF); | |
1085 | snd_soc_unregister_dai(&wm8978_dai); | |
1086 | snd_soc_unregister_codec(&wm8978->codec); | |
1087 | kfree(wm8978); | |
1088 | wm8978_codec = NULL; | |
1089 | } | |
1090 | ||
1091 | static __devinit int wm8978_i2c_probe(struct i2c_client *i2c, | |
1092 | const struct i2c_device_id *id) | |
1093 | { | |
1094 | struct wm8978_priv *wm8978; | |
1095 | struct snd_soc_codec *codec; | |
1096 | ||
1097 | wm8978 = kzalloc(sizeof(struct wm8978_priv), GFP_KERNEL); | |
1098 | if (wm8978 == NULL) | |
1099 | return -ENOMEM; | |
1100 | ||
1101 | codec = &wm8978->codec; | |
1102 | codec->hw_write = (hw_write_t)i2c_master_send; | |
1103 | ||
1104 | i2c_set_clientdata(i2c, wm8978); | |
1105 | codec->control_data = i2c; | |
1106 | ||
1107 | codec->dev = &i2c->dev; | |
1108 | ||
1109 | return wm8978_register(wm8978); | |
1110 | } | |
1111 | ||
1112 | static __devexit int wm8978_i2c_remove(struct i2c_client *client) | |
1113 | { | |
1114 | struct wm8978_priv *wm8978 = i2c_get_clientdata(client); | |
1115 | wm8978_unregister(wm8978); | |
1116 | return 0; | |
1117 | } | |
1118 | ||
1119 | static const struct i2c_device_id wm8978_i2c_id[] = { | |
1120 | { "wm8978", 0 }, | |
1121 | { } | |
1122 | }; | |
1123 | MODULE_DEVICE_TABLE(i2c, wm8978_i2c_id); | |
1124 | ||
1125 | static struct i2c_driver wm8978_i2c_driver = { | |
1126 | .driver = { | |
1127 | .name = "WM8978", | |
1128 | .owner = THIS_MODULE, | |
1129 | }, | |
1130 | .probe = wm8978_i2c_probe, | |
1131 | .remove = __devexit_p(wm8978_i2c_remove), | |
1132 | .id_table = wm8978_i2c_id, | |
1133 | }; | |
1134 | ||
1135 | static int __init wm8978_modinit(void) | |
1136 | { | |
1137 | return i2c_add_driver(&wm8978_i2c_driver); | |
1138 | } | |
1139 | module_init(wm8978_modinit); | |
1140 | ||
1141 | static void __exit wm8978_exit(void) | |
1142 | { | |
1143 | i2c_del_driver(&wm8978_i2c_driver); | |
1144 | } | |
1145 | module_exit(wm8978_exit); | |
1146 | ||
1147 | MODULE_DESCRIPTION("ASoC WM8978 codec driver"); | |
1148 | MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); | |
1149 | MODULE_LICENSE("GPL"); |