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0b5e92c5 JC |
1 | /* |
2 | * wm8940.c -- WM8940 ALSA Soc Audio driver | |
3 | * | |
4 | * Author: Jonathan Cameron <jic23@cam.ac.uk> | |
5 | * | |
6 | * Based on wm8510.c | |
7 | * Copyright 2006 Wolfson Microelectronics PLC. | |
8 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * Not currently handled: | |
15 | * Notch filter control | |
16 | * AUXMode (inverting vs mixer) | |
17 | * No means to obtain current gain if alc enabled. | |
18 | * No use made of gpio | |
19 | * Fast VMID discharge for power down | |
20 | * Soft Start | |
21 | * DLR and ALR Swaps not enabled | |
22 | * Digital Sidetone not supported | |
23 | */ | |
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/pm.h> | |
30 | #include <linux/i2c.h> | |
fbbf7fea | 31 | #include <linux/regmap.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
0b5e92c5 JC |
33 | #include <sound/core.h> |
34 | #include <sound/pcm.h> | |
35 | #include <sound/pcm_params.h> | |
36 | #include <sound/soc.h> | |
0b5e92c5 JC |
37 | #include <sound/initval.h> |
38 | #include <sound/tlv.h> | |
39 | ||
40 | #include "wm8940.h" | |
41 | ||
42 | struct wm8940_priv { | |
43 | unsigned int sysclk; | |
fbbf7fea | 44 | struct regmap *regmap; |
0b5e92c5 JC |
45 | }; |
46 | ||
fbbf7fea | 47 | static bool wm8940_volatile_register(struct device *dev, unsigned int reg) |
788b6e8e AL |
48 | { |
49 | switch (reg) { | |
50 | case WM8940_SOFTRESET: | |
fbbf7fea | 51 | return true; |
788b6e8e | 52 | default: |
fbbf7fea MB |
53 | return false; |
54 | } | |
55 | } | |
56 | ||
57 | static bool wm8940_readable_register(struct device *dev, unsigned int reg) | |
58 | { | |
59 | switch (reg) { | |
60 | case WM8940_SOFTRESET: | |
61 | case WM8940_POWER1: | |
62 | case WM8940_POWER2: | |
63 | case WM8940_POWER3: | |
64 | case WM8940_IFACE: | |
65 | case WM8940_COMPANDINGCTL: | |
66 | case WM8940_CLOCK: | |
67 | case WM8940_ADDCNTRL: | |
68 | case WM8940_GPIO: | |
69 | case WM8940_CTLINT: | |
70 | case WM8940_DAC: | |
71 | case WM8940_DACVOL: | |
72 | case WM8940_ADC: | |
73 | case WM8940_ADCVOL: | |
74 | case WM8940_NOTCH1: | |
75 | case WM8940_NOTCH2: | |
76 | case WM8940_NOTCH3: | |
77 | case WM8940_NOTCH4: | |
78 | case WM8940_NOTCH5: | |
79 | case WM8940_NOTCH6: | |
80 | case WM8940_NOTCH7: | |
81 | case WM8940_NOTCH8: | |
82 | case WM8940_DACLIM1: | |
83 | case WM8940_DACLIM2: | |
84 | case WM8940_ALC1: | |
85 | case WM8940_ALC2: | |
86 | case WM8940_ALC3: | |
87 | case WM8940_NOISEGATE: | |
88 | case WM8940_PLLN: | |
89 | case WM8940_PLLK1: | |
90 | case WM8940_PLLK2: | |
91 | case WM8940_PLLK3: | |
92 | case WM8940_ALC4: | |
93 | case WM8940_INPUTCTL: | |
94 | case WM8940_PGAGAIN: | |
95 | case WM8940_ADCBOOST: | |
96 | case WM8940_OUTPUTCTL: | |
97 | case WM8940_SPKMIX: | |
98 | case WM8940_SPKVOL: | |
99 | case WM8940_MONOMIX: | |
100 | return true; | |
101 | default: | |
102 | return false; | |
788b6e8e AL |
103 | } |
104 | } | |
105 | ||
fbbf7fea MB |
106 | static const struct reg_default wm8940_reg_defaults[] = { |
107 | { 0x1, 0x0000 }, /* Power 1 */ | |
108 | { 0x2, 0x0000 }, /* Power 2 */ | |
109 | { 0x3, 0x0000 }, /* Power 3 */ | |
110 | { 0x4, 0x0010 }, /* Interface Control */ | |
111 | { 0x5, 0x0000 }, /* Companding Control */ | |
112 | { 0x6, 0x0140 }, /* Clock Control */ | |
113 | { 0x7, 0x0000 }, /* Additional Controls */ | |
114 | { 0x8, 0x0000 }, /* GPIO Control */ | |
115 | { 0x9, 0x0002 }, /* Auto Increment Control */ | |
116 | { 0xa, 0x0000 }, /* DAC Control */ | |
117 | { 0xb, 0x00FF }, /* DAC Volume */ | |
118 | ||
119 | { 0xe, 0x0100 }, /* ADC Control */ | |
120 | { 0xf, 0x00FF }, /* ADC Volume */ | |
121 | { 0x10, 0x0000 }, /* Notch Filter 1 Control 1 */ | |
122 | { 0x11, 0x0000 }, /* Notch Filter 1 Control 2 */ | |
123 | { 0x12, 0x0000 }, /* Notch Filter 2 Control 1 */ | |
124 | { 0x13, 0x0000 }, /* Notch Filter 2 Control 2 */ | |
125 | { 0x14, 0x0000 }, /* Notch Filter 3 Control 1 */ | |
126 | { 0x15, 0x0000 }, /* Notch Filter 3 Control 2 */ | |
127 | { 0x16, 0x0000 }, /* Notch Filter 4 Control 1 */ | |
128 | { 0x17, 0x0000 }, /* Notch Filter 4 Control 2 */ | |
129 | { 0x18, 0x0032 }, /* DAC Limit Control 1 */ | |
130 | { 0x19, 0x0000 }, /* DAC Limit Control 2 */ | |
131 | ||
132 | { 0x20, 0x0038 }, /* ALC Control 1 */ | |
133 | { 0x21, 0x000B }, /* ALC Control 2 */ | |
134 | { 0x22, 0x0032 }, /* ALC Control 3 */ | |
135 | { 0x23, 0x0000 }, /* Noise Gate */ | |
136 | { 0x24, 0x0041 }, /* PLLN */ | |
137 | { 0x25, 0x000C }, /* PLLK1 */ | |
138 | { 0x26, 0x0093 }, /* PLLK2 */ | |
139 | { 0x27, 0x00E9 }, /* PLLK3 */ | |
140 | ||
141 | { 0x2a, 0x0030 }, /* ALC Control 4 */ | |
142 | ||
143 | { 0x2c, 0x0002 }, /* Input Control */ | |
144 | { 0x2d, 0x0050 }, /* PGA Gain */ | |
145 | ||
146 | { 0x2f, 0x0002 }, /* ADC Boost Control */ | |
147 | ||
148 | { 0x31, 0x0002 }, /* Output Control */ | |
149 | { 0x32, 0x0000 }, /* Speaker Mixer Control */ | |
150 | ||
151 | { 0x36, 0x0079 }, /* Speaker Volume */ | |
152 | ||
153 | { 0x38, 0x0000 }, /* Mono Mixer Control */ | |
0b5e92c5 JC |
154 | }; |
155 | ||
0b5e92c5 | 156 | static const char *wm8940_companding[] = { "Off", "NC", "u-law", "A-law" }; |
47ef3427 TI |
157 | static SOC_ENUM_SINGLE_DECL(wm8940_adc_companding_enum, |
158 | WM8940_COMPANDINGCTL, 1, wm8940_companding); | |
159 | static SOC_ENUM_SINGLE_DECL(wm8940_dac_companding_enum, | |
160 | WM8940_COMPANDINGCTL, 3, wm8940_companding); | |
0b5e92c5 JC |
161 | |
162 | static const char *wm8940_alc_mode_text[] = {"ALC", "Limiter"}; | |
47ef3427 TI |
163 | static SOC_ENUM_SINGLE_DECL(wm8940_alc_mode_enum, |
164 | WM8940_ALC3, 8, wm8940_alc_mode_text); | |
0b5e92c5 JC |
165 | |
166 | static const char *wm8940_mic_bias_level_text[] = {"0.9", "0.65"}; | |
47ef3427 TI |
167 | static SOC_ENUM_SINGLE_DECL(wm8940_mic_bias_level_enum, |
168 | WM8940_INPUTCTL, 8, wm8940_mic_bias_level_text); | |
0b5e92c5 JC |
169 | |
170 | static const char *wm8940_filter_mode_text[] = {"Audio", "Application"}; | |
47ef3427 TI |
171 | static SOC_ENUM_SINGLE_DECL(wm8940_filter_mode_enum, |
172 | WM8940_ADC, 7, wm8940_filter_mode_text); | |
0b5e92c5 | 173 | |
6be01cfb MB |
174 | static DECLARE_TLV_DB_SCALE(wm8940_spk_vol_tlv, -5700, 100, 1); |
175 | static DECLARE_TLV_DB_SCALE(wm8940_att_tlv, -1000, 1000, 0); | |
176 | static DECLARE_TLV_DB_SCALE(wm8940_pga_vol_tlv, -1200, 75, 0); | |
177 | static DECLARE_TLV_DB_SCALE(wm8940_alc_min_tlv, -1200, 600, 0); | |
178 | static DECLARE_TLV_DB_SCALE(wm8940_alc_max_tlv, 675, 600, 0); | |
179 | static DECLARE_TLV_DB_SCALE(wm8940_alc_tar_tlv, -2250, 50, 0); | |
180 | static DECLARE_TLV_DB_SCALE(wm8940_lim_boost_tlv, 0, 100, 0); | |
181 | static DECLARE_TLV_DB_SCALE(wm8940_lim_thresh_tlv, -600, 100, 0); | |
182 | static DECLARE_TLV_DB_SCALE(wm8940_adc_tlv, -12750, 50, 1); | |
183 | static DECLARE_TLV_DB_SCALE(wm8940_capture_boost_vol_tlv, 0, 2000, 0); | |
0b5e92c5 JC |
184 | |
185 | static const struct snd_kcontrol_new wm8940_snd_controls[] = { | |
186 | SOC_SINGLE("Digital Loopback Switch", WM8940_COMPANDINGCTL, | |
187 | 6, 1, 0), | |
188 | SOC_ENUM("DAC Companding", wm8940_dac_companding_enum), | |
189 | SOC_ENUM("ADC Companding", wm8940_adc_companding_enum), | |
190 | ||
191 | SOC_ENUM("ALC Mode", wm8940_alc_mode_enum), | |
192 | SOC_SINGLE("ALC Switch", WM8940_ALC1, 8, 1, 0), | |
193 | SOC_SINGLE_TLV("ALC Capture Max Gain", WM8940_ALC1, | |
194 | 3, 7, 1, wm8940_alc_max_tlv), | |
195 | SOC_SINGLE_TLV("ALC Capture Min Gain", WM8940_ALC1, | |
196 | 0, 7, 0, wm8940_alc_min_tlv), | |
197 | SOC_SINGLE_TLV("ALC Capture Target", WM8940_ALC2, | |
198 | 0, 14, 0, wm8940_alc_tar_tlv), | |
199 | SOC_SINGLE("ALC Capture Hold", WM8940_ALC2, 4, 10, 0), | |
200 | SOC_SINGLE("ALC Capture Decay", WM8940_ALC3, 4, 10, 0), | |
201 | SOC_SINGLE("ALC Capture Attach", WM8940_ALC3, 0, 10, 0), | |
202 | SOC_SINGLE("ALC ZC Switch", WM8940_ALC4, 1, 1, 0), | |
203 | SOC_SINGLE("ALC Capture Noise Gate Switch", WM8940_NOISEGATE, | |
204 | 3, 1, 0), | |
205 | SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8940_NOISEGATE, | |
206 | 0, 7, 0), | |
207 | ||
208 | SOC_SINGLE("DAC Playback Limiter Switch", WM8940_DACLIM1, 8, 1, 0), | |
209 | SOC_SINGLE("DAC Playback Limiter Attack", WM8940_DACLIM1, 0, 9, 0), | |
210 | SOC_SINGLE("DAC Playback Limiter Decay", WM8940_DACLIM1, 4, 11, 0), | |
211 | SOC_SINGLE_TLV("DAC Playback Limiter Threshold", WM8940_DACLIM2, | |
212 | 4, 9, 1, wm8940_lim_thresh_tlv), | |
213 | SOC_SINGLE_TLV("DAC Playback Limiter Boost", WM8940_DACLIM2, | |
214 | 0, 12, 0, wm8940_lim_boost_tlv), | |
215 | ||
216 | SOC_SINGLE("Capture PGA ZC Switch", WM8940_PGAGAIN, 7, 1, 0), | |
217 | SOC_SINGLE_TLV("Capture PGA Volume", WM8940_PGAGAIN, | |
218 | 0, 63, 0, wm8940_pga_vol_tlv), | |
219 | SOC_SINGLE_TLV("Digital Playback Volume", WM8940_DACVOL, | |
220 | 0, 255, 0, wm8940_adc_tlv), | |
221 | SOC_SINGLE_TLV("Digital Capture Volume", WM8940_ADCVOL, | |
222 | 0, 255, 0, wm8940_adc_tlv), | |
223 | SOC_ENUM("Mic Bias Level", wm8940_mic_bias_level_enum), | |
224 | SOC_SINGLE_TLV("Capture Boost Volue", WM8940_ADCBOOST, | |
225 | 8, 1, 0, wm8940_capture_boost_vol_tlv), | |
226 | SOC_SINGLE_TLV("Speaker Playback Volume", WM8940_SPKVOL, | |
227 | 0, 63, 0, wm8940_spk_vol_tlv), | |
228 | SOC_SINGLE("Speaker Playback Switch", WM8940_SPKVOL, 6, 1, 1), | |
229 | ||
230 | SOC_SINGLE_TLV("Speaker Mixer Line Bypass Volume", WM8940_SPKVOL, | |
231 | 8, 1, 1, wm8940_att_tlv), | |
232 | SOC_SINGLE("Speaker Playback ZC Switch", WM8940_SPKVOL, 7, 1, 0), | |
233 | ||
234 | SOC_SINGLE("Mono Out Switch", WM8940_MONOMIX, 6, 1, 1), | |
235 | SOC_SINGLE_TLV("Mono Mixer Line Bypass Volume", WM8940_MONOMIX, | |
236 | 7, 1, 1, wm8940_att_tlv), | |
237 | ||
238 | SOC_SINGLE("High Pass Filter Switch", WM8940_ADC, 8, 1, 0), | |
239 | SOC_ENUM("High Pass Filter Mode", wm8940_filter_mode_enum), | |
240 | SOC_SINGLE("High Pass Filter Cut Off", WM8940_ADC, 4, 7, 0), | |
241 | SOC_SINGLE("ADC Inversion Switch", WM8940_ADC, 0, 1, 0), | |
242 | SOC_SINGLE("DAC Inversion Switch", WM8940_DAC, 0, 1, 0), | |
243 | SOC_SINGLE("DAC Auto Mute Switch", WM8940_DAC, 2, 1, 0), | |
244 | SOC_SINGLE("ZC Timeout Clock Switch", WM8940_ADDCNTRL, 0, 1, 0), | |
245 | }; | |
246 | ||
247 | static const struct snd_kcontrol_new wm8940_speaker_mixer_controls[] = { | |
248 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8940_SPKMIX, 1, 1, 0), | |
249 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8940_SPKMIX, 5, 1, 0), | |
250 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8940_SPKMIX, 0, 1, 0), | |
251 | }; | |
252 | ||
253 | static const struct snd_kcontrol_new wm8940_mono_mixer_controls[] = { | |
254 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8940_MONOMIX, 1, 1, 0), | |
255 | SOC_DAPM_SINGLE("Aux Playback Switch", WM8940_MONOMIX, 2, 1, 0), | |
256 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8940_MONOMIX, 0, 1, 0), | |
257 | }; | |
258 | ||
6be01cfb | 259 | static DECLARE_TLV_DB_SCALE(wm8940_boost_vol_tlv, -1500, 300, 1); |
0b5e92c5 JC |
260 | static const struct snd_kcontrol_new wm8940_input_boost_controls[] = { |
261 | SOC_DAPM_SINGLE("Mic PGA Switch", WM8940_PGAGAIN, 6, 1, 1), | |
262 | SOC_DAPM_SINGLE_TLV("Aux Volume", WM8940_ADCBOOST, | |
263 | 0, 7, 0, wm8940_boost_vol_tlv), | |
264 | SOC_DAPM_SINGLE_TLV("Mic Volume", WM8940_ADCBOOST, | |
265 | 4, 7, 0, wm8940_boost_vol_tlv), | |
266 | }; | |
267 | ||
268 | static const struct snd_kcontrol_new wm8940_micpga_controls[] = { | |
269 | SOC_DAPM_SINGLE("AUX Switch", WM8940_INPUTCTL, 2, 1, 0), | |
270 | SOC_DAPM_SINGLE("MICP Switch", WM8940_INPUTCTL, 0, 1, 0), | |
271 | SOC_DAPM_SINGLE("MICN Switch", WM8940_INPUTCTL, 1, 1, 0), | |
272 | }; | |
273 | ||
274 | static const struct snd_soc_dapm_widget wm8940_dapm_widgets[] = { | |
275 | SND_SOC_DAPM_MIXER("Speaker Mixer", WM8940_POWER3, 2, 0, | |
276 | &wm8940_speaker_mixer_controls[0], | |
277 | ARRAY_SIZE(wm8940_speaker_mixer_controls)), | |
278 | SND_SOC_DAPM_MIXER("Mono Mixer", WM8940_POWER3, 3, 0, | |
279 | &wm8940_mono_mixer_controls[0], | |
280 | ARRAY_SIZE(wm8940_mono_mixer_controls)), | |
281 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8940_POWER3, 0, 0), | |
282 | ||
283 | SND_SOC_DAPM_PGA("SpkN Out", WM8940_POWER3, 5, 0, NULL, 0), | |
284 | SND_SOC_DAPM_PGA("SpkP Out", WM8940_POWER3, 6, 0, NULL, 0), | |
285 | SND_SOC_DAPM_PGA("Mono Out", WM8940_POWER3, 7, 0, NULL, 0), | |
286 | SND_SOC_DAPM_OUTPUT("MONOOUT"), | |
287 | SND_SOC_DAPM_OUTPUT("SPKOUTP"), | |
288 | SND_SOC_DAPM_OUTPUT("SPKOUTN"), | |
289 | ||
290 | SND_SOC_DAPM_PGA("Aux Input", WM8940_POWER1, 6, 0, NULL, 0), | |
291 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8940_POWER2, 0, 0), | |
292 | SND_SOC_DAPM_MIXER("Mic PGA", WM8940_POWER2, 2, 0, | |
293 | &wm8940_micpga_controls[0], | |
294 | ARRAY_SIZE(wm8940_micpga_controls)), | |
295 | SND_SOC_DAPM_MIXER("Boost Mixer", WM8940_POWER2, 4, 0, | |
296 | &wm8940_input_boost_controls[0], | |
297 | ARRAY_SIZE(wm8940_input_boost_controls)), | |
298 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8940_POWER1, 4, 0), | |
299 | ||
300 | SND_SOC_DAPM_INPUT("MICN"), | |
301 | SND_SOC_DAPM_INPUT("MICP"), | |
302 | SND_SOC_DAPM_INPUT("AUX"), | |
303 | }; | |
304 | ||
6435e5be | 305 | static const struct snd_soc_dapm_route wm8940_dapm_routes[] = { |
0b5e92c5 JC |
306 | /* Mono output mixer */ |
307 | {"Mono Mixer", "PCM Playback Switch", "DAC"}, | |
308 | {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, | |
309 | {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
310 | ||
311 | /* Speaker output mixer */ | |
312 | {"Speaker Mixer", "PCM Playback Switch", "DAC"}, | |
313 | {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, | |
314 | {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, | |
315 | ||
316 | /* Outputs */ | |
317 | {"Mono Out", NULL, "Mono Mixer"}, | |
318 | {"MONOOUT", NULL, "Mono Out"}, | |
319 | {"SpkN Out", NULL, "Speaker Mixer"}, | |
320 | {"SpkP Out", NULL, "Speaker Mixer"}, | |
321 | {"SPKOUTN", NULL, "SpkN Out"}, | |
322 | {"SPKOUTP", NULL, "SpkP Out"}, | |
323 | ||
324 | /* Microphone PGA */ | |
325 | {"Mic PGA", "MICN Switch", "MICN"}, | |
326 | {"Mic PGA", "MICP Switch", "MICP"}, | |
327 | {"Mic PGA", "AUX Switch", "AUX"}, | |
328 | ||
329 | /* Boost Mixer */ | |
330 | {"Boost Mixer", "Mic PGA Switch", "Mic PGA"}, | |
331 | {"Boost Mixer", "Mic Volume", "MICP"}, | |
332 | {"Boost Mixer", "Aux Volume", "Aux Input"}, | |
333 | ||
334 | {"ADC", NULL, "Boost Mixer"}, | |
335 | }; | |
336 | ||
8d50e447 | 337 | #define wm8940_reset(c) snd_soc_write(c, WM8940_SOFTRESET, 0); |
0b5e92c5 JC |
338 | |
339 | static int wm8940_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
340 | unsigned int fmt) | |
341 | { | |
342 | struct snd_soc_codec *codec = codec_dai->codec; | |
8d50e447 MB |
343 | u16 iface = snd_soc_read(codec, WM8940_IFACE) & 0xFE67; |
344 | u16 clk = snd_soc_read(codec, WM8940_CLOCK) & 0x1fe; | |
0b5e92c5 JC |
345 | |
346 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
347 | case SND_SOC_DAIFMT_CBM_CFM: | |
348 | clk |= 1; | |
349 | break; | |
350 | case SND_SOC_DAIFMT_CBS_CFS: | |
351 | break; | |
352 | default: | |
353 | return -EINVAL; | |
354 | } | |
8d50e447 | 355 | snd_soc_write(codec, WM8940_CLOCK, clk); |
0b5e92c5 JC |
356 | |
357 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
358 | case SND_SOC_DAIFMT_I2S: | |
359 | iface |= (2 << 3); | |
360 | break; | |
361 | case SND_SOC_DAIFMT_LEFT_J: | |
362 | iface |= (1 << 3); | |
363 | break; | |
364 | case SND_SOC_DAIFMT_RIGHT_J: | |
365 | break; | |
366 | case SND_SOC_DAIFMT_DSP_A: | |
367 | iface |= (3 << 3); | |
368 | break; | |
369 | case SND_SOC_DAIFMT_DSP_B: | |
370 | iface |= (3 << 3) | (1 << 7); | |
371 | break; | |
372 | } | |
373 | ||
374 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
375 | case SND_SOC_DAIFMT_NB_NF: | |
376 | break; | |
377 | case SND_SOC_DAIFMT_NB_IF: | |
378 | iface |= (1 << 7); | |
379 | break; | |
380 | case SND_SOC_DAIFMT_IB_NF: | |
381 | iface |= (1 << 8); | |
382 | break; | |
383 | case SND_SOC_DAIFMT_IB_IF: | |
384 | iface |= (1 << 8) | (1 << 7); | |
385 | break; | |
386 | } | |
387 | ||
8d50e447 | 388 | snd_soc_write(codec, WM8940_IFACE, iface); |
0b5e92c5 JC |
389 | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static int wm8940_i2s_hw_params(struct snd_pcm_substream *substream, | |
394 | struct snd_pcm_hw_params *params, | |
395 | struct snd_soc_dai *dai) | |
396 | { | |
e6968a17 | 397 | struct snd_soc_codec *codec = dai->codec; |
8d50e447 MB |
398 | u16 iface = snd_soc_read(codec, WM8940_IFACE) & 0xFD9F; |
399 | u16 addcntrl = snd_soc_read(codec, WM8940_ADDCNTRL) & 0xFFF1; | |
400 | u16 companding = snd_soc_read(codec, | |
0b5e92c5 JC |
401 | WM8940_COMPANDINGCTL) & 0xFFDF; |
402 | int ret; | |
403 | ||
404 | /* LoutR control */ | |
405 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE | |
406 | && params_channels(params) == 2) | |
407 | iface |= (1 << 9); | |
408 | ||
409 | switch (params_rate(params)) { | |
b3172f22 | 410 | case 8000: |
0b5e92c5 JC |
411 | addcntrl |= (0x5 << 1); |
412 | break; | |
b3172f22 | 413 | case 11025: |
0b5e92c5 JC |
414 | addcntrl |= (0x4 << 1); |
415 | break; | |
b3172f22 | 416 | case 16000: |
0b5e92c5 JC |
417 | addcntrl |= (0x3 << 1); |
418 | break; | |
b3172f22 | 419 | case 22050: |
0b5e92c5 JC |
420 | addcntrl |= (0x2 << 1); |
421 | break; | |
b3172f22 | 422 | case 32000: |
0b5e92c5 JC |
423 | addcntrl |= (0x1 << 1); |
424 | break; | |
b3172f22 GL |
425 | case 44100: |
426 | case 48000: | |
0b5e92c5 JC |
427 | break; |
428 | } | |
8d50e447 | 429 | ret = snd_soc_write(codec, WM8940_ADDCNTRL, addcntrl); |
0b5e92c5 JC |
430 | if (ret) |
431 | goto error_ret; | |
432 | ||
74b24c38 MB |
433 | switch (params_width(params)) { |
434 | case 8: | |
0b5e92c5 JC |
435 | companding = companding | (1 << 5); |
436 | break; | |
74b24c38 | 437 | case 16: |
0b5e92c5 | 438 | break; |
74b24c38 | 439 | case 20: |
0b5e92c5 JC |
440 | iface |= (1 << 5); |
441 | break; | |
74b24c38 | 442 | case 24: |
0b5e92c5 JC |
443 | iface |= (2 << 5); |
444 | break; | |
74b24c38 | 445 | case 32: |
0b5e92c5 JC |
446 | iface |= (3 << 5); |
447 | break; | |
448 | } | |
8d50e447 | 449 | ret = snd_soc_write(codec, WM8940_COMPANDINGCTL, companding); |
0b5e92c5 JC |
450 | if (ret) |
451 | goto error_ret; | |
8d50e447 | 452 | ret = snd_soc_write(codec, WM8940_IFACE, iface); |
0b5e92c5 JC |
453 | |
454 | error_ret: | |
455 | return ret; | |
456 | } | |
457 | ||
458 | static int wm8940_mute(struct snd_soc_dai *dai, int mute) | |
459 | { | |
460 | struct snd_soc_codec *codec = dai->codec; | |
8d50e447 | 461 | u16 mute_reg = snd_soc_read(codec, WM8940_DAC) & 0xffbf; |
0b5e92c5 JC |
462 | |
463 | if (mute) | |
464 | mute_reg |= 0x40; | |
465 | ||
8d50e447 | 466 | return snd_soc_write(codec, WM8940_DAC, mute_reg); |
0b5e92c5 JC |
467 | } |
468 | ||
469 | static int wm8940_set_bias_level(struct snd_soc_codec *codec, | |
470 | enum snd_soc_bias_level level) | |
471 | { | |
fbbf7fea | 472 | struct wm8940_priv *wm8940 = snd_soc_codec_get_drvdata(codec); |
0b5e92c5 | 473 | u16 val; |
8d50e447 | 474 | u16 pwr_reg = snd_soc_read(codec, WM8940_POWER1) & 0x1F0; |
0b5e92c5 JC |
475 | int ret = 0; |
476 | ||
477 | switch (level) { | |
478 | case SND_SOC_BIAS_ON: | |
479 | /* ensure bufioen and biasen */ | |
480 | pwr_reg |= (1 << 2) | (1 << 3); | |
481 | /* Enable thermal shutdown */ | |
8d50e447 MB |
482 | val = snd_soc_read(codec, WM8940_OUTPUTCTL); |
483 | ret = snd_soc_write(codec, WM8940_OUTPUTCTL, val | 0x2); | |
0b5e92c5 JC |
484 | if (ret) |
485 | break; | |
486 | /* set vmid to 75k */ | |
8d50e447 | 487 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x1); |
0b5e92c5 JC |
488 | break; |
489 | case SND_SOC_BIAS_PREPARE: | |
490 | /* ensure bufioen and biasen */ | |
491 | pwr_reg |= (1 << 2) | (1 << 3); | |
8d50e447 | 492 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x1); |
0b5e92c5 JC |
493 | break; |
494 | case SND_SOC_BIAS_STANDBY: | |
2145554f | 495 | if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) { |
fbbf7fea | 496 | ret = regcache_sync(wm8940->regmap); |
788b6e8e AL |
497 | if (ret < 0) { |
498 | dev_err(codec->dev, "Failed to sync cache: %d\n", ret); | |
499 | return ret; | |
500 | } | |
501 | } | |
502 | ||
0b5e92c5 JC |
503 | /* ensure bufioen and biasen */ |
504 | pwr_reg |= (1 << 2) | (1 << 3); | |
505 | /* set vmid to 300k for standby */ | |
8d50e447 | 506 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg | 0x2); |
0b5e92c5 JC |
507 | break; |
508 | case SND_SOC_BIAS_OFF: | |
8d50e447 | 509 | ret = snd_soc_write(codec, WM8940_POWER1, pwr_reg); |
0b5e92c5 JC |
510 | break; |
511 | } | |
512 | ||
513 | return ret; | |
514 | } | |
515 | ||
516 | struct pll_ { | |
517 | unsigned int pre_scale:2; | |
518 | unsigned int n:4; | |
519 | unsigned int k; | |
520 | }; | |
521 | ||
522 | static struct pll_ pll_div; | |
523 | ||
524 | /* The size in bits of the pll divide multiplied by 10 | |
525 | * to allow rounding later */ | |
526 | #define FIXED_PLL_SIZE ((1 << 24) * 10) | |
527 | static void pll_factors(unsigned int target, unsigned int source) | |
528 | { | |
529 | unsigned long long Kpart; | |
530 | unsigned int K, Ndiv, Nmod; | |
531 | /* The left shift ist to avoid accuracy loss when right shifting */ | |
532 | Ndiv = target / source; | |
533 | ||
534 | if (Ndiv > 12) { | |
535 | source <<= 1; | |
536 | /* Multiply by 2 */ | |
537 | pll_div.pre_scale = 0; | |
538 | Ndiv = target / source; | |
539 | } else if (Ndiv < 3) { | |
540 | source >>= 2; | |
541 | /* Divide by 4 */ | |
542 | pll_div.pre_scale = 3; | |
543 | Ndiv = target / source; | |
544 | } else if (Ndiv < 6) { | |
545 | source >>= 1; | |
546 | /* divide by 2 */ | |
547 | pll_div.pre_scale = 2; | |
548 | Ndiv = target / source; | |
549 | } else | |
550 | pll_div.pre_scale = 1; | |
551 | ||
552 | if ((Ndiv < 6) || (Ndiv > 12)) | |
553 | printk(KERN_WARNING | |
554 | "WM8940 N value %d outwith recommended range!d\n", | |
555 | Ndiv); | |
556 | ||
557 | pll_div.n = Ndiv; | |
558 | Nmod = target % source; | |
559 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; | |
560 | ||
561 | do_div(Kpart, source); | |
562 | ||
563 | K = Kpart & 0xFFFFFFFF; | |
564 | ||
565 | /* Check if we need to round */ | |
566 | if ((K % 10) >= 5) | |
567 | K += 5; | |
568 | ||
569 | /* Move down to proper range now rounding is done */ | |
570 | K /= 10; | |
571 | ||
572 | pll_div.k = K; | |
573 | } | |
574 | ||
575 | /* Untested at the moment */ | |
85488037 MB |
576 | static int wm8940_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, |
577 | int source, unsigned int freq_in, unsigned int freq_out) | |
0b5e92c5 JC |
578 | { |
579 | struct snd_soc_codec *codec = codec_dai->codec; | |
580 | u16 reg; | |
581 | ||
582 | /* Turn off PLL */ | |
8d50e447 MB |
583 | reg = snd_soc_read(codec, WM8940_POWER1); |
584 | snd_soc_write(codec, WM8940_POWER1, reg & 0x1df); | |
0b5e92c5 JC |
585 | |
586 | if (freq_in == 0 || freq_out == 0) { | |
587 | /* Clock CODEC directly from MCLK */ | |
8d50e447 MB |
588 | reg = snd_soc_read(codec, WM8940_CLOCK); |
589 | snd_soc_write(codec, WM8940_CLOCK, reg & 0x0ff); | |
0b5e92c5 | 590 | /* Pll power down */ |
8d50e447 | 591 | snd_soc_write(codec, WM8940_PLLN, (1 << 7)); |
0b5e92c5 JC |
592 | return 0; |
593 | } | |
594 | ||
595 | /* Pll is followed by a frequency divide by 4 */ | |
596 | pll_factors(freq_out*4, freq_in); | |
597 | if (pll_div.k) | |
8d50e447 | 598 | snd_soc_write(codec, WM8940_PLLN, |
0b5e92c5 JC |
599 | (pll_div.pre_scale << 4) | pll_div.n | (1 << 6)); |
600 | else /* No factional component */ | |
8d50e447 | 601 | snd_soc_write(codec, WM8940_PLLN, |
0b5e92c5 | 602 | (pll_div.pre_scale << 4) | pll_div.n); |
8d50e447 MB |
603 | snd_soc_write(codec, WM8940_PLLK1, pll_div.k >> 18); |
604 | snd_soc_write(codec, WM8940_PLLK2, (pll_div.k >> 9) & 0x1ff); | |
605 | snd_soc_write(codec, WM8940_PLLK3, pll_div.k & 0x1ff); | |
0b5e92c5 | 606 | /* Enable the PLL */ |
8d50e447 MB |
607 | reg = snd_soc_read(codec, WM8940_POWER1); |
608 | snd_soc_write(codec, WM8940_POWER1, reg | 0x020); | |
0b5e92c5 JC |
609 | |
610 | /* Run CODEC from PLL instead of MCLK */ | |
8d50e447 MB |
611 | reg = snd_soc_read(codec, WM8940_CLOCK); |
612 | snd_soc_write(codec, WM8940_CLOCK, reg | 0x100); | |
0b5e92c5 JC |
613 | |
614 | return 0; | |
615 | } | |
616 | ||
617 | static int wm8940_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
618 | int clk_id, unsigned int freq, int dir) | |
619 | { | |
620 | struct snd_soc_codec *codec = codec_dai->codec; | |
b2c812e2 | 621 | struct wm8940_priv *wm8940 = snd_soc_codec_get_drvdata(codec); |
0b5e92c5 JC |
622 | |
623 | switch (freq) { | |
624 | case 11289600: | |
625 | case 12000000: | |
626 | case 12288000: | |
627 | case 16934400: | |
628 | case 18432000: | |
629 | wm8940->sysclk = freq; | |
630 | return 0; | |
631 | } | |
632 | return -EINVAL; | |
633 | } | |
634 | ||
635 | static int wm8940_set_dai_clkdiv(struct snd_soc_dai *codec_dai, | |
636 | int div_id, int div) | |
637 | { | |
638 | struct snd_soc_codec *codec = codec_dai->codec; | |
639 | u16 reg; | |
640 | int ret = 0; | |
641 | ||
642 | switch (div_id) { | |
643 | case WM8940_BCLKDIV: | |
b272cc76 | 644 | reg = snd_soc_read(codec, WM8940_CLOCK) & 0xFFE3; |
8d50e447 | 645 | ret = snd_soc_write(codec, WM8940_CLOCK, reg | (div << 2)); |
0b5e92c5 JC |
646 | break; |
647 | case WM8940_MCLKDIV: | |
8d50e447 MB |
648 | reg = snd_soc_read(codec, WM8940_CLOCK) & 0xFF1F; |
649 | ret = snd_soc_write(codec, WM8940_CLOCK, reg | (div << 5)); | |
0b5e92c5 JC |
650 | break; |
651 | case WM8940_OPCLKDIV: | |
49fa4d9b AL |
652 | reg = snd_soc_read(codec, WM8940_GPIO) & 0xFFCF; |
653 | ret = snd_soc_write(codec, WM8940_GPIO, reg | (div << 4)); | |
0b5e92c5 JC |
654 | break; |
655 | } | |
656 | return ret; | |
657 | } | |
658 | ||
659 | #define WM8940_RATES SNDRV_PCM_RATE_8000_48000 | |
660 | ||
661 | #define WM8940_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ | |
662 | SNDRV_PCM_FMTBIT_S16_LE | \ | |
663 | SNDRV_PCM_FMTBIT_S20_3LE | \ | |
664 | SNDRV_PCM_FMTBIT_S24_LE | \ | |
665 | SNDRV_PCM_FMTBIT_S32_LE) | |
666 | ||
85e7652d | 667 | static const struct snd_soc_dai_ops wm8940_dai_ops = { |
0b5e92c5 JC |
668 | .hw_params = wm8940_i2s_hw_params, |
669 | .set_sysclk = wm8940_set_dai_sysclk, | |
670 | .digital_mute = wm8940_mute, | |
671 | .set_fmt = wm8940_set_dai_fmt, | |
672 | .set_clkdiv = wm8940_set_dai_clkdiv, | |
673 | .set_pll = wm8940_set_dai_pll, | |
674 | }; | |
675 | ||
f0fba2ad LG |
676 | static struct snd_soc_dai_driver wm8940_dai = { |
677 | .name = "wm8940-hifi", | |
0b5e92c5 JC |
678 | .playback = { |
679 | .stream_name = "Playback", | |
680 | .channels_min = 1, | |
681 | .channels_max = 2, | |
682 | .rates = WM8940_RATES, | |
683 | .formats = WM8940_FORMATS, | |
684 | }, | |
685 | .capture = { | |
686 | .stream_name = "Capture", | |
687 | .channels_min = 1, | |
688 | .channels_max = 2, | |
689 | .rates = WM8940_RATES, | |
690 | .formats = WM8940_FORMATS, | |
691 | }, | |
692 | .ops = &wm8940_dai_ops, | |
693 | .symmetric_rates = 1, | |
694 | }; | |
0b5e92c5 | 695 | |
f0fba2ad | 696 | static int wm8940_probe(struct snd_soc_codec *codec) |
0b5e92c5 | 697 | { |
f0fba2ad | 698 | struct wm8940_setup_data *pdata = codec->dev->platform_data; |
0b5e92c5 JC |
699 | int ret; |
700 | u16 reg; | |
0b5e92c5 | 701 | |
0b5e92c5 JC |
702 | ret = wm8940_reset(codec); |
703 | if (ret < 0) { | |
704 | dev_err(codec->dev, "Failed to issue reset\n"); | |
705 | return ret; | |
706 | } | |
707 | ||
bd1204cb | 708 | snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_STANDBY); |
0b5e92c5 | 709 | |
8d50e447 | 710 | ret = snd_soc_write(codec, WM8940_POWER1, 0x180); |
0b5e92c5 JC |
711 | if (ret < 0) |
712 | return ret; | |
713 | ||
714 | if (!pdata) | |
715 | dev_warn(codec->dev, "No platform data supplied\n"); | |
716 | else { | |
8d50e447 MB |
717 | reg = snd_soc_read(codec, WM8940_OUTPUTCTL); |
718 | ret = snd_soc_write(codec, WM8940_OUTPUTCTL, reg | pdata->vroi); | |
0b5e92c5 JC |
719 | if (ret < 0) |
720 | return ret; | |
721 | } | |
722 | ||
f0fba2ad | 723 | return ret; |
0b5e92c5 JC |
724 | } |
725 | ||
f0fba2ad LG |
726 | static struct snd_soc_codec_driver soc_codec_dev_wm8940 = { |
727 | .probe = wm8940_probe, | |
f0fba2ad | 728 | .set_bias_level = wm8940_set_bias_level, |
5fdf082b LPC |
729 | .suspend_bias_off = true, |
730 | ||
6435e5be MB |
731 | .controls = wm8940_snd_controls, |
732 | .num_controls = ARRAY_SIZE(wm8940_snd_controls), | |
733 | .dapm_widgets = wm8940_dapm_widgets, | |
734 | .num_dapm_widgets = ARRAY_SIZE(wm8940_dapm_widgets), | |
735 | .dapm_routes = wm8940_dapm_routes, | |
736 | .num_dapm_routes = ARRAY_SIZE(wm8940_dapm_routes), | |
fbbf7fea MB |
737 | }; |
738 | ||
739 | static const struct regmap_config wm8940_regmap = { | |
740 | .reg_bits = 8, | |
741 | .val_bits = 16, | |
742 | ||
743 | .max_register = WM8940_MONOMIX, | |
744 | .reg_defaults = wm8940_reg_defaults, | |
745 | .num_reg_defaults = ARRAY_SIZE(wm8940_reg_defaults), | |
746 | ||
747 | .readable_reg = wm8940_readable_register, | |
748 | .volatile_reg = wm8940_volatile_register, | |
f0fba2ad LG |
749 | }; |
750 | ||
7a79e94e BP |
751 | static int wm8940_i2c_probe(struct i2c_client *i2c, |
752 | const struct i2c_device_id *id) | |
0b5e92c5 JC |
753 | { |
754 | struct wm8940_priv *wm8940; | |
f0fba2ad | 755 | int ret; |
0b5e92c5 | 756 | |
42dad0d8 MB |
757 | wm8940 = devm_kzalloc(&i2c->dev, sizeof(struct wm8940_priv), |
758 | GFP_KERNEL); | |
0b5e92c5 JC |
759 | if (wm8940 == NULL) |
760 | return -ENOMEM; | |
761 | ||
fbbf7fea MB |
762 | wm8940->regmap = devm_regmap_init_i2c(i2c, &wm8940_regmap); |
763 | if (IS_ERR(wm8940->regmap)) | |
764 | return PTR_ERR(wm8940->regmap); | |
765 | ||
0b5e92c5 | 766 | i2c_set_clientdata(i2c, wm8940); |
0b5e92c5 | 767 | |
f0fba2ad LG |
768 | ret = snd_soc_register_codec(&i2c->dev, |
769 | &soc_codec_dev_wm8940, &wm8940_dai, 1); | |
42dad0d8 | 770 | |
db1e18de | 771 | return ret; |
0b5e92c5 JC |
772 | } |
773 | ||
7a79e94e | 774 | static int wm8940_i2c_remove(struct i2c_client *client) |
0b5e92c5 | 775 | { |
f0fba2ad | 776 | snd_soc_unregister_codec(&client->dev); |
42dad0d8 | 777 | |
0b5e92c5 JC |
778 | return 0; |
779 | } | |
780 | ||
781 | static const struct i2c_device_id wm8940_i2c_id[] = { | |
782 | { "wm8940", 0 }, | |
783 | { } | |
784 | }; | |
785 | MODULE_DEVICE_TABLE(i2c, wm8940_i2c_id); | |
786 | ||
787 | static struct i2c_driver wm8940_i2c_driver = { | |
788 | .driver = { | |
091edccf | 789 | .name = "wm8940", |
0b5e92c5 | 790 | }, |
f0fba2ad | 791 | .probe = wm8940_i2c_probe, |
7a79e94e | 792 | .remove = wm8940_i2c_remove, |
0b5e92c5 JC |
793 | .id_table = wm8940_i2c_id, |
794 | }; | |
795 | ||
794836b9 | 796 | module_i2c_driver(wm8940_i2c_driver); |
0b5e92c5 JC |
797 | |
798 | MODULE_DESCRIPTION("ASoC WM8940 driver"); | |
799 | MODULE_AUTHOR("Jonathan Cameron"); | |
800 | MODULE_LICENSE("GPL"); |