Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 1 | /* |
| 2 | * wm8974.c -- WM8974 ALSA Soc Audio driver |
| 3 | * |
| 4 | * Copyright 2006 Wolfson Microelectronics PLC. |
| 5 | * |
| 6 | * Author: Liam Girdwood <liam.girdwood@wolfsonmicro.com> |
| 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> |
| 28 | |
| 29 | #include "wm8974.h" |
| 30 | |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 31 | struct snd_soc_codec_device soc_codec_dev_wm8974; |
| 32 | |
| 33 | /* |
| 34 | * wm8974 register cache |
| 35 | * We can't read the WM8974 register space when we are |
| 36 | * using 2 wire for device control, so we cache them instead. |
| 37 | */ |
| 38 | static const u16 wm8974_reg[WM8974_CACHEREGNUM] = { |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 39 | 0x0000, 0x0000, 0x0000, 0x0000, |
| 40 | 0x0050, 0x0000, 0x0140, 0x0000, |
| 41 | 0x0000, 0x0000, 0x0000, 0x00ff, |
| 42 | 0x0000, 0x0000, 0x0100, 0x00ff, |
| 43 | 0x0000, 0x0000, 0x012c, 0x002c, |
| 44 | 0x002c, 0x002c, 0x002c, 0x0000, |
| 45 | 0x0032, 0x0000, 0x0000, 0x0000, |
| 46 | 0x0000, 0x0000, 0x0000, 0x0000, |
| 47 | 0x0038, 0x000b, 0x0032, 0x0000, |
| 48 | 0x0008, 0x000c, 0x0093, 0x00e9, |
| 49 | 0x0000, 0x0000, 0x0000, 0x0000, |
| 50 | 0x0003, 0x0010, 0x0000, 0x0000, |
| 51 | 0x0000, 0x0002, 0x0000, 0x0000, |
| 52 | 0x0000, 0x0000, 0x0039, 0x0000, |
| 53 | 0x0000, |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 54 | }; |
| 55 | |
| 56 | /* |
| 57 | * read wm8974 register cache |
| 58 | */ |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 59 | static inline unsigned int wm8974_read_reg_cache(struct snd_soc_codec *codec, |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 60 | unsigned int reg) |
| 61 | { |
| 62 | u16 *cache = codec->reg_cache; |
| 63 | if (reg == WM8974_RESET) |
| 64 | return 0; |
| 65 | if (reg >= WM8974_CACHEREGNUM) |
| 66 | return -1; |
| 67 | return cache[reg]; |
| 68 | } |
| 69 | |
| 70 | /* |
| 71 | * write wm8974 register cache |
| 72 | */ |
| 73 | static inline void wm8974_write_reg_cache(struct snd_soc_codec *codec, |
| 74 | u16 reg, unsigned int value) |
| 75 | { |
| 76 | u16 *cache = codec->reg_cache; |
| 77 | if (reg >= WM8974_CACHEREGNUM) |
| 78 | return; |
| 79 | cache[reg] = value; |
| 80 | } |
| 81 | |
| 82 | /* |
| 83 | * write to the WM8974 register space |
| 84 | */ |
| 85 | static int wm8974_write(struct snd_soc_codec *codec, unsigned int reg, |
| 86 | unsigned int value) |
| 87 | { |
| 88 | u8 data[2]; |
| 89 | |
| 90 | /* data is |
| 91 | * D15..D9 WM8974 register offset |
| 92 | * D8...D0 register data |
| 93 | */ |
| 94 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); |
| 95 | data[1] = value & 0x00ff; |
| 96 | |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 97 | wm8974_write_reg_cache(codec, reg, value); |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 98 | if (codec->hw_write(codec->control_data, data, 2) == 2) |
| 99 | return 0; |
| 100 | else |
| 101 | return -EIO; |
| 102 | } |
| 103 | |
| 104 | #define wm8974_reset(c) wm8974_write(c, WM8974_RESET, 0) |
| 105 | |
| 106 | static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" }; |
| 107 | static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" }; |
| 108 | static const char *wm8974_eqmode[] = {"Capture", "Playback" }; |
| 109 | static const char *wm8974_bw[] = {"Narrow", "Wide" }; |
| 110 | static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" }; |
| 111 | static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" }; |
| 112 | static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" }; |
| 113 | static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" }; |
| 114 | static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" }; |
| 115 | static const char *wm8974_alc[] = {"ALC", "Limiter" }; |
| 116 | |
| 117 | static const struct soc_enum wm8974_enum[] = { |
| 118 | SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */ |
| 119 | SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */ |
| 120 | SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp), |
| 121 | SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode), |
| 122 | |
| 123 | SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1), |
| 124 | SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw), |
| 125 | SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2), |
| 126 | SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw), |
| 127 | |
| 128 | SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3), |
| 129 | SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw), |
| 130 | SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4), |
| 131 | SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw), |
| 132 | |
| 133 | SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5), |
| 134 | SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc), |
| 135 | }; |
| 136 | |
| 137 | static const struct snd_kcontrol_new wm8974_snd_controls[] = { |
| 138 | |
| 139 | SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0), |
| 140 | |
| 141 | SOC_ENUM("DAC Companding", wm8974_enum[1]), |
| 142 | SOC_ENUM("ADC Companding", wm8974_enum[0]), |
| 143 | |
| 144 | SOC_ENUM("Playback De-emphasis", wm8974_enum[2]), |
| 145 | SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0), |
| 146 | |
| 147 | SOC_SINGLE("PCM Volume", WM8974_DACVOL, 0, 127, 0), |
| 148 | |
| 149 | SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0), |
| 150 | SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0), |
| 151 | SOC_SINGLE("ADC Inversion Switch", WM8974_COMP, 0, 1, 0), |
| 152 | |
| 153 | SOC_SINGLE("Capture Volume", WM8974_ADCVOL, 0, 127, 0), |
| 154 | |
| 155 | SOC_ENUM("Equaliser Function", wm8974_enum[3]), |
| 156 | SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]), |
| 157 | SOC_SINGLE("EQ1 Volume", WM8974_EQ1, 0, 31, 1), |
| 158 | |
| 159 | SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]), |
| 160 | SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]), |
| 161 | SOC_SINGLE("EQ2 Volume", WM8974_EQ2, 0, 31, 1), |
| 162 | |
| 163 | SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]), |
| 164 | SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]), |
| 165 | SOC_SINGLE("EQ3 Volume", WM8974_EQ3, 0, 31, 1), |
| 166 | |
| 167 | SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]), |
| 168 | SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]), |
| 169 | SOC_SINGLE("EQ4 Volume", WM8974_EQ4, 0, 31, 1), |
| 170 | |
| 171 | SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]), |
| 172 | SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]), |
| 173 | SOC_SINGLE("EQ5 Volume", WM8974_EQ5, 0, 31, 1), |
| 174 | |
| 175 | SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0), |
| 176 | SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0), |
| 177 | SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0), |
| 178 | |
| 179 | SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0), |
| 180 | SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0), |
| 181 | |
| 182 | SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0), |
| 183 | SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0), |
| 184 | SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0), |
| 185 | |
| 186 | SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0), |
| 187 | SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0), |
| 188 | SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0), |
| 189 | |
| 190 | SOC_ENUM("ALC Capture Mode", wm8974_enum[13]), |
| 191 | SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0), |
| 192 | SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0), |
| 193 | |
| 194 | SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0), |
| 195 | SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0), |
| 196 | |
| 197 | SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0), |
| 198 | SOC_SINGLE("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0), |
| 199 | |
| 200 | SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0), |
| 201 | SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1), |
| 202 | SOC_SINGLE("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0), |
| 203 | |
| 204 | SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0), |
| 205 | SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 0), |
| 206 | }; |
| 207 | |
| 208 | /* add non dapm controls */ |
| 209 | static int wm8974_add_controls(struct snd_soc_codec *codec) |
| 210 | { |
| 211 | int err, i; |
| 212 | |
| 213 | for (i = 0; i < ARRAY_SIZE(wm8974_snd_controls); i++) { |
| 214 | err = snd_ctl_add(codec->card, |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 215 | snd_soc_cnew(&wm8974_snd_controls[i], |
| 216 | codec, NULL)); |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 217 | if (err < 0) |
| 218 | return err; |
| 219 | } |
| 220 | |
| 221 | return 0; |
| 222 | } |
| 223 | |
| 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), |
| 235 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 1), |
| 236 | }; |
| 237 | |
| 238 | /* AUX Input boost vol */ |
| 239 | static const struct snd_kcontrol_new wm8974_aux_boost_controls = |
| 240 | SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); |
| 241 | |
| 242 | /* Mic Input boost vol */ |
| 243 | static const struct snd_kcontrol_new wm8974_mic_boost_controls = |
| 244 | SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); |
| 245 | |
| 246 | /* Capture boost switch */ |
| 247 | static const struct snd_kcontrol_new wm8974_capture_boost_controls = |
| 248 | SOC_DAPM_SINGLE("Capture Boost Switch", WM8974_INPPGA, 6, 1, 0); |
| 249 | |
| 250 | /* Aux In to PGA */ |
| 251 | static const struct snd_kcontrol_new wm8974_aux_capture_boost_controls = |
| 252 | SOC_DAPM_SINGLE("Aux Capture Boost Switch", WM8974_INPPGA, 2, 1, 0); |
| 253 | |
| 254 | /* Mic P In to PGA */ |
| 255 | static const struct snd_kcontrol_new wm8974_micp_capture_boost_controls = |
| 256 | SOC_DAPM_SINGLE("Mic P Capture Boost Switch", WM8974_INPPGA, 0, 1, 0); |
| 257 | |
| 258 | /* Mic N In to PGA */ |
| 259 | static const struct snd_kcontrol_new wm8974_micn_capture_boost_controls = |
| 260 | SOC_DAPM_SINGLE("Mic N Capture Boost Switch", WM8974_INPPGA, 1, 1, 0); |
| 261 | |
| 262 | static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { |
| 263 | SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, |
| 264 | &wm8974_speaker_mixer_controls[0], |
| 265 | ARRAY_SIZE(wm8974_speaker_mixer_controls)), |
| 266 | SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, |
| 267 | &wm8974_mono_mixer_controls[0], |
| 268 | ARRAY_SIZE(wm8974_mono_mixer_controls)), |
| 269 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), |
| 270 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER3, 0, 0), |
| 271 | SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), |
| 272 | SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), |
| 273 | SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), |
| 274 | SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), |
| 275 | SND_SOC_DAPM_PGA("Mic PGA", WM8974_POWER2, 2, 0, NULL, 0), |
| 276 | |
| 277 | SND_SOC_DAPM_PGA("Aux Boost", SND_SOC_NOPM, 0, 0, |
| 278 | &wm8974_aux_boost_controls, 1), |
| 279 | SND_SOC_DAPM_PGA("Mic Boost", SND_SOC_NOPM, 0, 0, |
| 280 | &wm8974_mic_boost_controls, 1), |
| 281 | SND_SOC_DAPM_SWITCH("Capture Boost", SND_SOC_NOPM, 0, 0, |
| 282 | &wm8974_capture_boost_controls), |
| 283 | |
| 284 | SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, NULL, 0), |
| 285 | |
| 286 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), |
| 287 | |
| 288 | SND_SOC_DAPM_INPUT("MICN"), |
| 289 | SND_SOC_DAPM_INPUT("MICP"), |
| 290 | SND_SOC_DAPM_INPUT("AUX"), |
| 291 | SND_SOC_DAPM_OUTPUT("MONOOUT"), |
| 292 | SND_SOC_DAPM_OUTPUT("SPKOUTP"), |
| 293 | SND_SOC_DAPM_OUTPUT("SPKOUTN"), |
| 294 | }; |
| 295 | |
| 296 | static const struct snd_soc_dapm_route audio_map[] = { |
| 297 | /* Mono output mixer */ |
| 298 | {"Mono Mixer", "PCM Playback Switch", "DAC"}, |
| 299 | {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, |
| 300 | {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, |
| 301 | |
| 302 | /* Speaker output mixer */ |
| 303 | {"Speaker Mixer", "PCM Playback Switch", "DAC"}, |
| 304 | {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, |
| 305 | {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, |
| 306 | |
| 307 | /* Outputs */ |
| 308 | {"Mono Out", NULL, "Mono Mixer"}, |
| 309 | {"MONOOUT", NULL, "Mono Out"}, |
| 310 | {"SpkN Out", NULL, "Speaker Mixer"}, |
| 311 | {"SpkP Out", NULL, "Speaker Mixer"}, |
| 312 | {"SPKOUTN", NULL, "SpkN Out"}, |
| 313 | {"SPKOUTP", NULL, "SpkP Out"}, |
| 314 | |
| 315 | /* Boost Mixer */ |
| 316 | {"Boost Mixer", NULL, "ADC"}, |
| 317 | {"Capture Boost Switch", "Aux Capture Boost Switch", "AUX"}, |
| 318 | {"Aux Boost", "Aux Volume", "Boost Mixer"}, |
| 319 | {"Capture Boost", "Capture Switch", "Boost Mixer"}, |
| 320 | {"Mic Boost", "Mic Volume", "Boost Mixer"}, |
| 321 | |
| 322 | /* Inputs */ |
| 323 | {"MICP", NULL, "Mic Boost"}, |
| 324 | {"MICN", NULL, "Mic PGA"}, |
| 325 | {"Mic PGA", NULL, "Capture Boost"}, |
| 326 | {"AUX", NULL, "Aux Input"}, |
| 327 | }; |
| 328 | |
| 329 | static int wm8974_add_widgets(struct snd_soc_codec *codec) |
| 330 | { |
| 331 | snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, |
| 332 | ARRAY_SIZE(wm8974_dapm_widgets)); |
| 333 | |
| 334 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); |
| 335 | |
| 336 | snd_soc_dapm_new_widgets(codec); |
| 337 | return 0; |
| 338 | } |
| 339 | |
| 340 | struct pll_ { |
| 341 | unsigned int in_hz, out_hz; |
| 342 | unsigned int pre:4; /* prescale - 1 */ |
| 343 | unsigned int n:4; |
| 344 | unsigned int k; |
| 345 | }; |
| 346 | |
| 347 | static struct pll_ pll[] = { |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 348 | { 12000000, 11289600, 0, 7, 0x86c220 }, |
| 349 | { 12000000, 12288000, 0, 8, 0x3126e8 }, |
| 350 | { 13000000, 11289600, 0, 6, 0xf28bd4 }, |
| 351 | { 13000000, 12288000, 0, 7, 0x8fd525 }, |
| 352 | { 12288000, 11289600, 0, 7, 0x59999a }, |
| 353 | { 11289600, 12288000, 0, 8, 0x80dee9 }, |
| 354 | { 25000000, 11289600, 1, 7, 0x39B024 }, |
| 355 | { 25000000, 24576000, 1, 7, 0xdd4413 } |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 356 | }; |
| 357 | |
| 358 | static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, |
| 359 | int pll_id, unsigned int freq_in, unsigned int freq_out) |
| 360 | { |
| 361 | struct snd_soc_codec *codec = codec_dai->codec; |
| 362 | int i; |
| 363 | u16 reg; |
| 364 | |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 365 | if (freq_in == 0 || freq_out == 0) { |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 366 | reg = wm8974_read_reg_cache(codec, WM8974_POWER1); |
| 367 | wm8974_write(codec, WM8974_POWER1, reg & 0x1df); |
| 368 | return 0; |
| 369 | } |
| 370 | |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 371 | for (i = 0; i < ARRAY_SIZE(pll); i++) { |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 372 | if (freq_in == pll[i].in_hz && freq_out == pll[i].out_hz) { |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 373 | wm8974_write(codec, WM8974_PLLN, |
| 374 | (pll[i].pre << 4) | pll[i].n); |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 375 | wm8974_write(codec, WM8974_PLLK1, pll[i].k >> 18); |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 376 | wm8974_write(codec, WM8974_PLLK2, |
| 377 | (pll[i].k >> 9) & 0x1ff); |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 378 | wm8974_write(codec, WM8974_PLLK3, pll[i].k & 0x1ff); |
| 379 | reg = wm8974_read_reg_cache(codec, WM8974_POWER1); |
| 380 | wm8974_write(codec, WM8974_POWER1, reg | 0x020); |
| 381 | return 0; |
| 382 | } |
| 383 | } |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 384 | |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 385 | return -EINVAL; |
| 386 | } |
| 387 | |
| 388 | /* |
| 389 | * Configure WM8974 clock dividers. |
| 390 | */ |
| 391 | static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, |
| 392 | int div_id, int div) |
| 393 | { |
| 394 | struct snd_soc_codec *codec = codec_dai->codec; |
| 395 | u16 reg; |
| 396 | |
| 397 | switch (div_id) { |
| 398 | case WM8974_OPCLKDIV: |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 399 | reg = wm8974_read_reg_cache(codec, WM8974_GPIO) & 0x1cf; |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 400 | wm8974_write(codec, WM8974_GPIO, reg | div); |
| 401 | break; |
| 402 | case WM8974_MCLKDIV: |
| 403 | reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x11f; |
| 404 | wm8974_write(codec, WM8974_CLOCK, reg | div); |
| 405 | break; |
| 406 | case WM8974_ADCCLK: |
| 407 | reg = wm8974_read_reg_cache(codec, WM8974_ADC) & 0x1f7; |
| 408 | wm8974_write(codec, WM8974_ADC, reg | div); |
| 409 | break; |
| 410 | case WM8974_DACCLK: |
| 411 | reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0x1f7; |
| 412 | wm8974_write(codec, WM8974_DAC, reg | div); |
| 413 | break; |
| 414 | case WM8974_BCLKDIV: |
| 415 | reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1e3; |
| 416 | wm8974_write(codec, WM8974_CLOCK, reg | div); |
| 417 | break; |
| 418 | default: |
| 419 | return -EINVAL; |
| 420 | } |
| 421 | |
| 422 | return 0; |
| 423 | } |
| 424 | |
| 425 | static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, |
| 426 | unsigned int fmt) |
| 427 | { |
| 428 | struct snd_soc_codec *codec = codec_dai->codec; |
| 429 | u16 iface = 0; |
| 430 | u16 clk = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1fe; |
| 431 | |
| 432 | /* set master/slave audio interface */ |
| 433 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 434 | case SND_SOC_DAIFMT_CBM_CFM: |
| 435 | clk |= 0x0001; |
| 436 | break; |
| 437 | case SND_SOC_DAIFMT_CBS_CFS: |
| 438 | break; |
| 439 | default: |
| 440 | return -EINVAL; |
| 441 | } |
| 442 | |
| 443 | /* interface format */ |
| 444 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 445 | case SND_SOC_DAIFMT_I2S: |
| 446 | iface |= 0x0010; |
| 447 | break; |
| 448 | case SND_SOC_DAIFMT_RIGHT_J: |
| 449 | break; |
| 450 | case SND_SOC_DAIFMT_LEFT_J: |
| 451 | iface |= 0x0008; |
| 452 | break; |
| 453 | case SND_SOC_DAIFMT_DSP_A: |
| 454 | iface |= 0x00018; |
| 455 | break; |
| 456 | default: |
| 457 | return -EINVAL; |
| 458 | } |
| 459 | |
| 460 | /* clock inversion */ |
| 461 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 462 | case SND_SOC_DAIFMT_NB_NF: |
| 463 | break; |
| 464 | case SND_SOC_DAIFMT_IB_IF: |
| 465 | iface |= 0x0180; |
| 466 | break; |
| 467 | case SND_SOC_DAIFMT_IB_NF: |
| 468 | iface |= 0x0100; |
| 469 | break; |
| 470 | case SND_SOC_DAIFMT_NB_IF: |
| 471 | iface |= 0x0080; |
| 472 | break; |
| 473 | default: |
| 474 | return -EINVAL; |
| 475 | } |
| 476 | |
| 477 | wm8974_write(codec, WM8974_IFACE, iface); |
| 478 | wm8974_write(codec, WM8974_CLOCK, clk); |
| 479 | return 0; |
| 480 | } |
| 481 | |
| 482 | static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream, |
| 483 | struct snd_pcm_hw_params *params, |
| 484 | struct snd_soc_dai *dai) |
| 485 | { |
| 486 | struct snd_soc_codec *codec = dai->codec; |
| 487 | u16 iface = wm8974_read_reg_cache(codec, WM8974_IFACE) & 0x19f; |
| 488 | u16 adn = wm8974_read_reg_cache(codec, WM8974_ADD) & 0x1f1; |
| 489 | |
| 490 | /* bit size */ |
| 491 | switch (params_format(params)) { |
| 492 | case SNDRV_PCM_FORMAT_S16_LE: |
| 493 | break; |
| 494 | case SNDRV_PCM_FORMAT_S20_3LE: |
| 495 | iface |= 0x0020; |
| 496 | break; |
| 497 | case SNDRV_PCM_FORMAT_S24_LE: |
| 498 | iface |= 0x0040; |
| 499 | break; |
| 500 | case SNDRV_PCM_FORMAT_S32_LE: |
| 501 | iface |= 0x0060; |
| 502 | break; |
| 503 | } |
| 504 | |
| 505 | /* filter coefficient */ |
| 506 | switch (params_rate(params)) { |
| 507 | case SNDRV_PCM_RATE_8000: |
| 508 | adn |= 0x5 << 1; |
| 509 | break; |
| 510 | case SNDRV_PCM_RATE_11025: |
| 511 | adn |= 0x4 << 1; |
| 512 | break; |
| 513 | case SNDRV_PCM_RATE_16000: |
| 514 | adn |= 0x3 << 1; |
| 515 | break; |
| 516 | case SNDRV_PCM_RATE_22050: |
| 517 | adn |= 0x2 << 1; |
| 518 | break; |
| 519 | case SNDRV_PCM_RATE_32000: |
| 520 | adn |= 0x1 << 1; |
| 521 | break; |
| 522 | case SNDRV_PCM_RATE_44100: |
| 523 | break; |
| 524 | } |
| 525 | |
| 526 | wm8974_write(codec, WM8974_IFACE, iface); |
| 527 | wm8974_write(codec, WM8974_ADD, adn); |
| 528 | return 0; |
| 529 | } |
| 530 | |
| 531 | static int wm8974_mute(struct snd_soc_dai *dai, int mute) |
| 532 | { |
| 533 | struct snd_soc_codec *codec = dai->codec; |
| 534 | u16 mute_reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0xffbf; |
| 535 | |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 536 | if (mute) |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 537 | wm8974_write(codec, WM8974_DAC, mute_reg | 0x40); |
| 538 | else |
| 539 | wm8974_write(codec, WM8974_DAC, mute_reg); |
| 540 | return 0; |
| 541 | } |
| 542 | |
| 543 | /* liam need to make this lower power with dapm */ |
| 544 | static int wm8974_set_bias_level(struct snd_soc_codec *codec, |
| 545 | enum snd_soc_bias_level level) |
| 546 | { |
| 547 | switch (level) { |
| 548 | case SND_SOC_BIAS_ON: |
| 549 | wm8974_write(codec, WM8974_POWER1, 0x1ff); |
| 550 | wm8974_write(codec, WM8974_POWER2, 0x1ff); |
| 551 | wm8974_write(codec, WM8974_POWER3, 0x1ff); |
| 552 | break; |
| 553 | case SND_SOC_BIAS_PREPARE: |
| 554 | break; |
| 555 | case SND_SOC_BIAS_STANDBY: |
| 556 | break; |
| 557 | case SND_SOC_BIAS_OFF: |
| 558 | wm8974_write(codec, WM8974_POWER1, 0x0); |
| 559 | wm8974_write(codec, WM8974_POWER2, 0x0); |
| 560 | wm8974_write(codec, WM8974_POWER3, 0x0); |
| 561 | break; |
| 562 | } |
| 563 | codec->bias_level = level; |
| 564 | return 0; |
| 565 | } |
| 566 | |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 567 | #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000) |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 568 | |
| 569 | #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
| 570 | SNDRV_PCM_FMTBIT_S24_LE) |
| 571 | |
| 572 | static struct snd_soc_dai_ops wm8974_ops = { |
| 573 | .hw_params = wm8974_pcm_hw_params, |
| 574 | .digital_mute = wm8974_mute, |
| 575 | .set_fmt = wm8974_set_dai_fmt, |
| 576 | .set_clkdiv = wm8974_set_dai_clkdiv, |
| 577 | .set_pll = wm8974_set_dai_pll, |
| 578 | }; |
| 579 | |
| 580 | struct snd_soc_dai wm8974_dai = { |
| 581 | .name = "WM8974 HiFi", |
| 582 | .playback = { |
| 583 | .stream_name = "Playback", |
| 584 | .channels_min = 1, |
| 585 | .channels_max = 1, |
| 586 | .rates = WM8974_RATES, |
| 587 | .formats = WM8974_FORMATS,}, |
| 588 | .capture = { |
| 589 | .stream_name = "Capture", |
| 590 | .channels_min = 1, |
| 591 | .channels_max = 1, |
| 592 | .rates = WM8974_RATES, |
| 593 | .formats = WM8974_FORMATS,}, |
| 594 | .ops = &wm8974_ops, |
| 595 | }; |
| 596 | EXPORT_SYMBOL_GPL(wm8974_dai); |
| 597 | |
| 598 | static int wm8974_suspend(struct platform_device *pdev, pm_message_t state) |
| 599 | { |
| 600 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 601 | struct snd_soc_codec *codec = socdev->card->codec; |
| 602 | |
| 603 | wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| 604 | return 0; |
| 605 | } |
| 606 | |
| 607 | static int wm8974_resume(struct platform_device *pdev) |
| 608 | { |
| 609 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 610 | struct snd_soc_codec *codec = socdev->card->codec; |
| 611 | int i; |
| 612 | u8 data[2]; |
| 613 | u16 *cache = codec->reg_cache; |
| 614 | |
| 615 | /* Sync reg_cache with the hardware */ |
| 616 | for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { |
| 617 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| 618 | data[1] = cache[i] & 0x00ff; |
| 619 | codec->hw_write(codec->control_data, data, 2); |
| 620 | } |
| 621 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 622 | wm8974_set_bias_level(codec, codec->suspend_bias_level); |
| 623 | return 0; |
| 624 | } |
| 625 | |
| 626 | /* |
| 627 | * initialise the WM8974 driver |
| 628 | * register the mixer and dsp interfaces with the kernel |
| 629 | */ |
| 630 | static int wm8974_init(struct snd_soc_device *socdev) |
| 631 | { |
| 632 | struct snd_soc_codec *codec = socdev->card->codec; |
| 633 | int ret = 0; |
| 634 | |
| 635 | codec->name = "WM8974"; |
| 636 | codec->owner = THIS_MODULE; |
| 637 | codec->read = wm8974_read_reg_cache; |
| 638 | codec->write = wm8974_write; |
| 639 | codec->set_bias_level = wm8974_set_bias_level; |
| 640 | codec->dai = &wm8974_dai; |
| 641 | codec->num_dai = 1; |
| 642 | codec->reg_cache_size = ARRAY_SIZE(wm8974_reg); |
| 643 | codec->reg_cache = kmemdup(wm8974_reg, sizeof(wm8974_reg), GFP_KERNEL); |
| 644 | |
| 645 | if (codec->reg_cache == NULL) |
| 646 | return -ENOMEM; |
| 647 | |
| 648 | wm8974_reset(codec); |
| 649 | |
| 650 | /* register pcms */ |
| 651 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
Mark Brown | 1a55b3f | 2009-05-23 11:31:40 +0100 | [diff] [blame^] | 652 | if (ret < 0) { |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 653 | printk(KERN_ERR "wm8974: failed to create pcms\n"); |
| 654 | goto pcm_err; |
| 655 | } |
| 656 | |
| 657 | /* power on device */ |
| 658 | wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 659 | wm8974_add_controls(codec); |
| 660 | wm8974_add_widgets(codec); |
| 661 | ret = snd_soc_init_card(socdev); |
| 662 | if (ret < 0) { |
| 663 | printk(KERN_ERR "wm8974: failed to register card\n"); |
| 664 | goto card_err; |
| 665 | } |
| 666 | return ret; |
| 667 | |
| 668 | card_err: |
| 669 | snd_soc_free_pcms(socdev); |
| 670 | snd_soc_dapm_free(socdev); |
| 671 | pcm_err: |
| 672 | kfree(codec->reg_cache); |
| 673 | return ret; |
| 674 | } |
| 675 | |
| 676 | static struct snd_soc_device *wm8974_socdev; |
| 677 | |
| 678 | #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) |
| 679 | |
| 680 | /* |
| 681 | * WM8974 2 wire address is 0x1a |
| 682 | */ |
| 683 | #define I2C_DRIVERID_WM8974 0xfefe /* liam - need a proper id */ |
| 684 | |
| 685 | static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END }; |
| 686 | |
| 687 | /* Magic definition of all other variables and things */ |
| 688 | I2C_CLIENT_INSMOD; |
| 689 | |
| 690 | static struct i2c_driver wm8974_i2c_driver; |
| 691 | static struct i2c_client client_template; |
| 692 | |
| 693 | /* If the i2c layer weren't so broken, we could pass this kind of data |
| 694 | around */ |
| 695 | |
| 696 | static int wm8974_codec_probe(struct i2c_adapter *adap, int addr, int kind) |
| 697 | { |
| 698 | struct snd_soc_device *socdev = wm8974_socdev; |
| 699 | struct wm8974_setup_data *setup = socdev->codec_data; |
| 700 | struct snd_soc_codec *codec = socdev->card->codec; |
| 701 | struct i2c_client *i2c; |
| 702 | int ret; |
| 703 | |
| 704 | if (addr != setup->i2c_address) |
| 705 | return -ENODEV; |
| 706 | |
| 707 | client_template.adapter = adap; |
| 708 | client_template.addr = addr; |
| 709 | |
| 710 | i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL); |
| 711 | if (i2c == NULL) { |
| 712 | kfree(codec); |
| 713 | return -ENOMEM; |
| 714 | } |
| 715 | i2c_set_clientdata(i2c, codec); |
| 716 | codec->control_data = i2c; |
| 717 | |
| 718 | ret = i2c_attach_client(i2c); |
| 719 | if (ret < 0) { |
| 720 | pr_err("failed to attach codec at addr %x\n", addr); |
| 721 | goto err; |
| 722 | } |
| 723 | |
| 724 | ret = wm8974_init(socdev); |
| 725 | if (ret < 0) { |
| 726 | pr_err("failed to initialise WM8974\n"); |
| 727 | goto err; |
| 728 | } |
| 729 | return ret; |
| 730 | |
| 731 | err: |
| 732 | kfree(codec); |
| 733 | kfree(i2c); |
| 734 | return ret; |
| 735 | } |
| 736 | |
| 737 | static int wm8974_i2c_detach(struct i2c_client *client) |
| 738 | { |
| 739 | struct snd_soc_codec *codec = i2c_get_clientdata(client); |
| 740 | i2c_detach_client(client); |
| 741 | kfree(codec->reg_cache); |
| 742 | kfree(client); |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | static int wm8974_i2c_attach(struct i2c_adapter *adap) |
| 747 | { |
| 748 | return i2c_probe(adap, &addr_data, wm8974_codec_probe); |
| 749 | } |
| 750 | |
| 751 | /* corgi i2c codec control layer */ |
| 752 | static struct i2c_driver wm8974_i2c_driver = { |
| 753 | .driver = { |
| 754 | .name = "WM8974 I2C Codec", |
| 755 | .owner = THIS_MODULE, |
| 756 | }, |
| 757 | .id = I2C_DRIVERID_WM8974, |
| 758 | .attach_adapter = wm8974_i2c_attach, |
| 759 | .detach_client = wm8974_i2c_detach, |
| 760 | .command = NULL, |
| 761 | }; |
| 762 | |
| 763 | static struct i2c_client client_template = { |
| 764 | .name = "WM8974", |
| 765 | .driver = &wm8974_i2c_driver, |
| 766 | }; |
| 767 | #endif |
| 768 | |
| 769 | static int wm8974_probe(struct platform_device *pdev) |
| 770 | { |
| 771 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 772 | struct wm8974_setup_data *setup; |
| 773 | struct snd_soc_codec *codec; |
| 774 | int ret = 0; |
| 775 | |
Mark Brown | 0a1bf55 | 2009-05-23 11:18:41 +0100 | [diff] [blame] | 776 | setup = socdev->codec_data; |
| 777 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| 778 | if (codec == NULL) |
| 779 | return -ENOMEM; |
| 780 | |
| 781 | socdev->card->codec = codec; |
| 782 | mutex_init(&codec->mutex); |
| 783 | INIT_LIST_HEAD(&codec->dapm_widgets); |
| 784 | INIT_LIST_HEAD(&codec->dapm_paths); |
| 785 | |
| 786 | wm8974_socdev = socdev; |
| 787 | #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) |
| 788 | if (setup->i2c_address) { |
| 789 | normal_i2c[0] = setup->i2c_address; |
| 790 | codec->hw_write = (hw_write_t)i2c_master_send; |
| 791 | ret = i2c_add_driver(&wm8974_i2c_driver); |
| 792 | if (ret != 0) |
| 793 | printk(KERN_ERR "can't add i2c driver"); |
| 794 | } |
| 795 | #else |
| 796 | /* Add other interfaces here */ |
| 797 | #endif |
| 798 | return ret; |
| 799 | } |
| 800 | |
| 801 | /* power down chip */ |
| 802 | static int wm8974_remove(struct platform_device *pdev) |
| 803 | { |
| 804 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 805 | struct snd_soc_codec *codec = socdev->card->codec; |
| 806 | |
| 807 | if (codec->control_data) |
| 808 | wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| 809 | |
| 810 | snd_soc_free_pcms(socdev); |
| 811 | snd_soc_dapm_free(socdev); |
| 812 | #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) |
| 813 | i2c_del_driver(&wm8974_i2c_driver); |
| 814 | #endif |
| 815 | kfree(codec); |
| 816 | |
| 817 | return 0; |
| 818 | } |
| 819 | |
| 820 | struct snd_soc_codec_device soc_codec_dev_wm8974 = { |
| 821 | .probe = wm8974_probe, |
| 822 | .remove = wm8974_remove, |
| 823 | .suspend = wm8974_suspend, |
| 824 | .resume = wm8974_resume, |
| 825 | }; |
| 826 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); |
| 827 | |
| 828 | static int __init wm8974_modinit(void) |
| 829 | { |
| 830 | return snd_soc_register_dai(&wm8974_dai); |
| 831 | } |
| 832 | module_init(wm8974_modinit); |
| 833 | |
| 834 | static void __exit wm8974_exit(void) |
| 835 | { |
| 836 | snd_soc_unregister_dai(&wm8974_dai); |
| 837 | } |
| 838 | module_exit(wm8974_exit); |
| 839 | |
| 840 | MODULE_DESCRIPTION("ASoC WM8974 driver"); |
| 841 | MODULE_AUTHOR("Liam Girdwood"); |
| 842 | MODULE_LICENSE("GPL"); |