Kenneth Kiraly | 8bae3e2 | 2008-09-10 19:33:32 +0100 | [diff] [blame] | 1 | /* |
| 2 | * wm8971.c -- WM8971 ALSA SoC Audio driver |
| 3 | * |
| 4 | * Copyright 2005 Lab126, Inc. |
| 5 | * |
| 6 | * Author: Kenneth Kiraly <kiraly@lab126.com> |
| 7 | * |
| 8 | * Based on wm8753.c by Liam Girdwood |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your |
| 13 | * option) any later version. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/moduleparam.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/delay.h> |
| 20 | #include <linux/pm.h> |
| 21 | #include <linux/i2c.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <sound/core.h> |
| 24 | #include <sound/pcm.h> |
| 25 | #include <sound/pcm_params.h> |
| 26 | #include <sound/soc.h> |
| 27 | #include <sound/soc-dapm.h> |
| 28 | #include <sound/initval.h> |
| 29 | |
| 30 | #include "wm8971.h" |
| 31 | |
Kenneth Kiraly | 8bae3e2 | 2008-09-10 19:33:32 +0100 | [diff] [blame] | 32 | #define WM8971_VERSION "0.9" |
| 33 | |
| 34 | #define WM8971_REG_COUNT 43 |
| 35 | |
| 36 | static struct workqueue_struct *wm8971_workq = NULL; |
| 37 | |
| 38 | /* codec private data */ |
| 39 | struct wm8971_priv { |
| 40 | unsigned int sysclk; |
| 41 | }; |
| 42 | |
| 43 | /* |
| 44 | * wm8971 register cache |
| 45 | * We can't read the WM8971 register space when we |
| 46 | * are using 2 wire for device control, so we cache them instead. |
| 47 | */ |
| 48 | static const u16 wm8971_reg[] = { |
| 49 | 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ |
| 50 | 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ |
| 51 | 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ |
| 52 | 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ |
| 53 | 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ |
| 54 | 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ |
| 55 | 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ |
| 56 | 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ |
| 57 | 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ |
| 58 | 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ |
| 59 | 0x0079, 0x0079, 0x0079, /* 40 */ |
| 60 | }; |
| 61 | |
| 62 | static inline unsigned int wm8971_read_reg_cache(struct snd_soc_codec *codec, |
| 63 | unsigned int reg) |
| 64 | { |
| 65 | u16 *cache = codec->reg_cache; |
| 66 | if (reg < WM8971_REG_COUNT) |
| 67 | return cache[reg]; |
| 68 | |
| 69 | return -1; |
| 70 | } |
| 71 | |
| 72 | static inline void wm8971_write_reg_cache(struct snd_soc_codec *codec, |
| 73 | unsigned int reg, unsigned int value) |
| 74 | { |
| 75 | u16 *cache = codec->reg_cache; |
| 76 | if (reg < WM8971_REG_COUNT) |
| 77 | cache[reg] = value; |
| 78 | } |
| 79 | |
| 80 | static int wm8971_write(struct snd_soc_codec *codec, unsigned int reg, |
| 81 | unsigned int value) |
| 82 | { |
| 83 | u8 data[2]; |
| 84 | |
| 85 | /* data is |
| 86 | * D15..D9 WM8753 register offset |
| 87 | * D8...D0 register data |
| 88 | */ |
| 89 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); |
| 90 | data[1] = value & 0x00ff; |
| 91 | |
| 92 | wm8971_write_reg_cache (codec, reg, value); |
| 93 | if (codec->hw_write(codec->control_data, data, 2) == 2) |
| 94 | return 0; |
| 95 | else |
| 96 | return -EIO; |
| 97 | } |
| 98 | |
| 99 | #define wm8971_reset(c) wm8971_write(c, WM8971_RESET, 0) |
| 100 | |
| 101 | /* WM8971 Controls */ |
| 102 | static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" }; |
| 103 | static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz", |
| 104 | "200Hz @ 48kHz" }; |
| 105 | static const char *wm8971_treble[] = { "8kHz", "4kHz" }; |
| 106 | static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" }; |
| 107 | static const char *wm8971_ng_type[] = { "Constant PGA Gain", |
| 108 | "Mute ADC Output" }; |
| 109 | static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" }; |
| 110 | static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)", |
| 111 | "Mono (Right)", "Digital Mono"}; |
| 112 | static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" }; |
| 113 | static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA", |
| 114 | "Differential"}; |
| 115 | static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA", |
| 116 | "Differential"}; |
| 117 | static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"}; |
| 118 | static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"}; |
| 119 | static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert", |
| 120 | "L + R Invert"}; |
| 121 | |
| 122 | static const struct soc_enum wm8971_enum[] = { |
| 123 | SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */ |
| 124 | SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter), |
| 125 | SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble), |
| 126 | SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func), |
| 127 | SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */ |
| 128 | SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp), |
| 129 | SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux), |
| 130 | SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase), |
| 131 | SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */ |
| 132 | SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux), |
| 133 | SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel), |
| 134 | SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel), |
| 135 | SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */ |
| 136 | SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux), |
| 137 | }; |
| 138 | |
| 139 | static const struct snd_kcontrol_new wm8971_snd_controls[] = { |
| 140 | SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0), |
| 141 | SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL, |
| 142 | 6, 1, 0), |
| 143 | SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1), |
| 144 | |
| 145 | SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V, |
| 146 | WM8971_ROUT1V, 7, 1, 0), |
| 147 | SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V, |
| 148 | WM8971_ROUT2V, 7, 1, 0), |
| 149 | SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0), |
| 150 | |
| 151 | SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0), |
| 152 | |
| 153 | SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1, |
| 154 | WM8971_LOUTM2, 4, 7, 1), |
| 155 | SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1, |
| 156 | WM8971_ROUTM2, 4, 7, 1), |
| 157 | SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1, |
| 158 | WM8971_MOUTM2, 4, 7, 1), |
| 159 | |
| 160 | SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V, |
| 161 | WM8971_ROUT1V, 0, 127, 0), |
| 162 | SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V, |
| 163 | WM8971_ROUT2V, 0, 127, 0), |
| 164 | |
| 165 | SOC_ENUM("Bass Boost", wm8971_enum[0]), |
| 166 | SOC_ENUM("Bass Filter", wm8971_enum[1]), |
| 167 | SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1), |
| 168 | |
| 169 | SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0), |
| 170 | SOC_ENUM("Treble Cut-off", wm8971_enum[2]), |
| 171 | |
| 172 | SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1), |
| 173 | |
| 174 | SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0), |
| 175 | SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0), |
| 176 | |
| 177 | SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0), |
| 178 | SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0), |
| 179 | SOC_ENUM("ALC Capture Function", wm8971_enum[3]), |
| 180 | SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0), |
| 181 | SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0), |
| 182 | SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0), |
| 183 | SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0), |
| 184 | SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0), |
| 185 | SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]), |
| 186 | SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0), |
| 187 | |
| 188 | SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0), |
| 189 | SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0), |
| 190 | |
| 191 | SOC_ENUM("Playback De-emphasis", wm8971_enum[5]), |
| 192 | SOC_ENUM("Playback Function", wm8971_enum[6]), |
| 193 | SOC_ENUM("Playback Phase", wm8971_enum[7]), |
| 194 | |
| 195 | SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0), |
| 196 | }; |
| 197 | |
| 198 | /* add non-DAPM controls */ |
| 199 | static int wm8971_add_controls(struct snd_soc_codec *codec) |
| 200 | { |
| 201 | int err, i; |
| 202 | |
| 203 | for (i = 0; i < ARRAY_SIZE(wm8971_snd_controls); i++) { |
| 204 | err = snd_ctl_add(codec->card, |
| 205 | snd_soc_cnew(&wm8971_snd_controls[i], |
| 206 | codec, NULL)); |
| 207 | if (err < 0) |
| 208 | return err; |
| 209 | } |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | /* |
| 214 | * DAPM Controls |
| 215 | */ |
| 216 | |
| 217 | /* Left Mixer */ |
| 218 | static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = { |
| 219 | SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0), |
| 220 | SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0), |
| 221 | SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0), |
| 222 | SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0), |
| 223 | }; |
| 224 | |
| 225 | /* Right Mixer */ |
| 226 | static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = { |
| 227 | SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0), |
| 228 | SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0), |
| 229 | SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0), |
| 230 | SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0), |
| 231 | }; |
| 232 | |
| 233 | /* Mono Mixer */ |
| 234 | static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = { |
| 235 | SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0), |
| 236 | SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0), |
| 237 | SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0), |
| 238 | SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0), |
| 239 | }; |
| 240 | |
| 241 | /* Left Line Mux */ |
| 242 | static const struct snd_kcontrol_new wm8971_left_line_controls = |
| 243 | SOC_DAPM_ENUM("Route", wm8971_enum[8]); |
| 244 | |
| 245 | /* Right Line Mux */ |
| 246 | static const struct snd_kcontrol_new wm8971_right_line_controls = |
| 247 | SOC_DAPM_ENUM("Route", wm8971_enum[9]); |
| 248 | |
| 249 | /* Left PGA Mux */ |
| 250 | static const struct snd_kcontrol_new wm8971_left_pga_controls = |
| 251 | SOC_DAPM_ENUM("Route", wm8971_enum[10]); |
| 252 | |
| 253 | /* Right PGA Mux */ |
| 254 | static const struct snd_kcontrol_new wm8971_right_pga_controls = |
| 255 | SOC_DAPM_ENUM("Route", wm8971_enum[11]); |
| 256 | |
| 257 | /* Mono ADC Mux */ |
| 258 | static const struct snd_kcontrol_new wm8971_monomux_controls = |
| 259 | SOC_DAPM_ENUM("Route", wm8971_enum[13]); |
| 260 | |
| 261 | static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = { |
| 262 | SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, |
| 263 | &wm8971_left_mixer_controls[0], |
| 264 | ARRAY_SIZE(wm8971_left_mixer_controls)), |
| 265 | SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, |
| 266 | &wm8971_right_mixer_controls[0], |
| 267 | ARRAY_SIZE(wm8971_right_mixer_controls)), |
| 268 | SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0, |
| 269 | &wm8971_mono_mixer_controls[0], |
| 270 | ARRAY_SIZE(wm8971_mono_mixer_controls)), |
| 271 | |
| 272 | SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0), |
| 273 | SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0), |
| 274 | SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0), |
| 275 | SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0), |
| 276 | SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0), |
| 277 | SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0), |
| 278 | SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0), |
| 279 | |
| 280 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8971_PWR1, 1, 0), |
| 281 | SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0), |
| 282 | SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0), |
| 283 | |
| 284 | SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0, |
| 285 | &wm8971_left_pga_controls), |
| 286 | SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0, |
| 287 | &wm8971_right_pga_controls), |
| 288 | SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, |
| 289 | &wm8971_left_line_controls), |
| 290 | SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, |
| 291 | &wm8971_right_line_controls), |
| 292 | |
| 293 | SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, |
| 294 | &wm8971_monomux_controls), |
| 295 | SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, |
| 296 | &wm8971_monomux_controls), |
| 297 | |
| 298 | SND_SOC_DAPM_OUTPUT("LOUT1"), |
| 299 | SND_SOC_DAPM_OUTPUT("ROUT1"), |
| 300 | SND_SOC_DAPM_OUTPUT("LOUT2"), |
| 301 | SND_SOC_DAPM_OUTPUT("ROUT2"), |
| 302 | SND_SOC_DAPM_OUTPUT("MONO"), |
| 303 | |
| 304 | SND_SOC_DAPM_INPUT("LINPUT1"), |
| 305 | SND_SOC_DAPM_INPUT("RINPUT1"), |
| 306 | SND_SOC_DAPM_INPUT("MIC"), |
| 307 | }; |
| 308 | |
| 309 | static const struct snd_soc_dapm_route audio_map[] = { |
| 310 | /* left mixer */ |
| 311 | {"Left Mixer", "Playback Switch", "Left DAC"}, |
| 312 | {"Left Mixer", "Left Bypass Switch", "Left Line Mux"}, |
| 313 | {"Left Mixer", "Right Playback Switch", "Right DAC"}, |
| 314 | {"Left Mixer", "Right Bypass Switch", "Right Line Mux"}, |
| 315 | |
| 316 | /* right mixer */ |
| 317 | {"Right Mixer", "Left Playback Switch", "Left DAC"}, |
| 318 | {"Right Mixer", "Left Bypass Switch", "Left Line Mux"}, |
| 319 | {"Right Mixer", "Playback Switch", "Right DAC"}, |
| 320 | {"Right Mixer", "Right Bypass Switch", "Right Line Mux"}, |
| 321 | |
| 322 | /* left out 1 */ |
| 323 | {"Left Out 1", NULL, "Left Mixer"}, |
| 324 | {"LOUT1", NULL, "Left Out 1"}, |
| 325 | |
| 326 | /* left out 2 */ |
| 327 | {"Left Out 2", NULL, "Left Mixer"}, |
| 328 | {"LOUT2", NULL, "Left Out 2"}, |
| 329 | |
| 330 | /* right out 1 */ |
| 331 | {"Right Out 1", NULL, "Right Mixer"}, |
| 332 | {"ROUT1", NULL, "Right Out 1"}, |
| 333 | |
| 334 | /* right out 2 */ |
| 335 | {"Right Out 2", NULL, "Right Mixer"}, |
| 336 | {"ROUT2", NULL, "Right Out 2"}, |
| 337 | |
| 338 | /* mono mixer */ |
| 339 | {"Mono Mixer", "Left Playback Switch", "Left DAC"}, |
| 340 | {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"}, |
| 341 | {"Mono Mixer", "Right Playback Switch", "Right DAC"}, |
| 342 | {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"}, |
| 343 | |
| 344 | /* mono out */ |
| 345 | {"Mono Out", NULL, "Mono Mixer"}, |
| 346 | {"MONO1", NULL, "Mono Out"}, |
| 347 | |
| 348 | /* Left Line Mux */ |
| 349 | {"Left Line Mux", "Line", "LINPUT1"}, |
| 350 | {"Left Line Mux", "PGA", "Left PGA Mux"}, |
| 351 | {"Left Line Mux", "Differential", "Differential Mux"}, |
| 352 | |
| 353 | /* Right Line Mux */ |
| 354 | {"Right Line Mux", "Line", "RINPUT1"}, |
| 355 | {"Right Line Mux", "Mic", "MIC"}, |
| 356 | {"Right Line Mux", "PGA", "Right PGA Mux"}, |
| 357 | {"Right Line Mux", "Differential", "Differential Mux"}, |
| 358 | |
| 359 | /* Left PGA Mux */ |
| 360 | {"Left PGA Mux", "Line", "LINPUT1"}, |
| 361 | {"Left PGA Mux", "Differential", "Differential Mux"}, |
| 362 | |
| 363 | /* Right PGA Mux */ |
| 364 | {"Right PGA Mux", "Line", "RINPUT1"}, |
| 365 | {"Right PGA Mux", "Differential", "Differential Mux"}, |
| 366 | |
| 367 | /* Differential Mux */ |
| 368 | {"Differential Mux", "Line", "LINPUT1"}, |
| 369 | {"Differential Mux", "Line", "RINPUT1"}, |
| 370 | |
| 371 | /* Left ADC Mux */ |
| 372 | {"Left ADC Mux", "Stereo", "Left PGA Mux"}, |
| 373 | {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"}, |
| 374 | {"Left ADC Mux", "Digital Mono", "Left PGA Mux"}, |
| 375 | |
| 376 | /* Right ADC Mux */ |
| 377 | {"Right ADC Mux", "Stereo", "Right PGA Mux"}, |
| 378 | {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"}, |
| 379 | {"Right ADC Mux", "Digital Mono", "Right PGA Mux"}, |
| 380 | |
| 381 | /* ADC */ |
| 382 | {"Left ADC", NULL, "Left ADC Mux"}, |
| 383 | {"Right ADC", NULL, "Right ADC Mux"}, |
| 384 | }; |
| 385 | |
| 386 | static int wm8971_add_widgets(struct snd_soc_codec *codec) |
| 387 | { |
| 388 | snd_soc_dapm_new_controls(codec, wm8971_dapm_widgets, |
| 389 | ARRAY_SIZE(wm8971_dapm_widgets)); |
| 390 | |
| 391 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); |
| 392 | |
| 393 | snd_soc_dapm_new_widgets(codec); |
| 394 | |
| 395 | return 0; |
| 396 | } |
| 397 | |
| 398 | struct _coeff_div { |
| 399 | u32 mclk; |
| 400 | u32 rate; |
| 401 | u16 fs; |
| 402 | u8 sr:5; |
| 403 | u8 usb:1; |
| 404 | }; |
| 405 | |
| 406 | /* codec hifi mclk clock divider coefficients */ |
| 407 | static const struct _coeff_div coeff_div[] = { |
| 408 | /* 8k */ |
| 409 | {12288000, 8000, 1536, 0x6, 0x0}, |
| 410 | {11289600, 8000, 1408, 0x16, 0x0}, |
| 411 | {18432000, 8000, 2304, 0x7, 0x0}, |
| 412 | {16934400, 8000, 2112, 0x17, 0x0}, |
| 413 | {12000000, 8000, 1500, 0x6, 0x1}, |
| 414 | |
| 415 | /* 11.025k */ |
| 416 | {11289600, 11025, 1024, 0x18, 0x0}, |
| 417 | {16934400, 11025, 1536, 0x19, 0x0}, |
| 418 | {12000000, 11025, 1088, 0x19, 0x1}, |
| 419 | |
| 420 | /* 16k */ |
| 421 | {12288000, 16000, 768, 0xa, 0x0}, |
| 422 | {18432000, 16000, 1152, 0xb, 0x0}, |
| 423 | {12000000, 16000, 750, 0xa, 0x1}, |
| 424 | |
| 425 | /* 22.05k */ |
| 426 | {11289600, 22050, 512, 0x1a, 0x0}, |
| 427 | {16934400, 22050, 768, 0x1b, 0x0}, |
| 428 | {12000000, 22050, 544, 0x1b, 0x1}, |
| 429 | |
| 430 | /* 32k */ |
| 431 | {12288000, 32000, 384, 0xc, 0x0}, |
| 432 | {18432000, 32000, 576, 0xd, 0x0}, |
| 433 | {12000000, 32000, 375, 0xa, 0x1}, |
| 434 | |
| 435 | /* 44.1k */ |
| 436 | {11289600, 44100, 256, 0x10, 0x0}, |
| 437 | {16934400, 44100, 384, 0x11, 0x0}, |
| 438 | {12000000, 44100, 272, 0x11, 0x1}, |
| 439 | |
| 440 | /* 48k */ |
| 441 | {12288000, 48000, 256, 0x0, 0x0}, |
| 442 | {18432000, 48000, 384, 0x1, 0x0}, |
| 443 | {12000000, 48000, 250, 0x0, 0x1}, |
| 444 | |
| 445 | /* 88.2k */ |
| 446 | {11289600, 88200, 128, 0x1e, 0x0}, |
| 447 | {16934400, 88200, 192, 0x1f, 0x0}, |
| 448 | {12000000, 88200, 136, 0x1f, 0x1}, |
| 449 | |
| 450 | /* 96k */ |
| 451 | {12288000, 96000, 128, 0xe, 0x0}, |
| 452 | {18432000, 96000, 192, 0xf, 0x0}, |
| 453 | {12000000, 96000, 125, 0xe, 0x1}, |
| 454 | }; |
| 455 | |
| 456 | static int get_coeff(int mclk, int rate) |
| 457 | { |
| 458 | int i; |
| 459 | |
| 460 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { |
| 461 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) |
| 462 | return i; |
| 463 | } |
| 464 | return -EINVAL; |
| 465 | } |
| 466 | |
| 467 | static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
| 468 | int clk_id, unsigned int freq, int dir) |
| 469 | { |
| 470 | struct snd_soc_codec *codec = codec_dai->codec; |
| 471 | struct wm8971_priv *wm8971 = codec->private_data; |
| 472 | |
| 473 | switch (freq) { |
| 474 | case 11289600: |
| 475 | case 12000000: |
| 476 | case 12288000: |
| 477 | case 16934400: |
| 478 | case 18432000: |
| 479 | wm8971->sysclk = freq; |
| 480 | return 0; |
| 481 | } |
| 482 | return -EINVAL; |
| 483 | } |
| 484 | |
| 485 | static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai, |
| 486 | unsigned int fmt) |
| 487 | { |
| 488 | struct snd_soc_codec *codec = codec_dai->codec; |
| 489 | u16 iface = 0; |
| 490 | |
| 491 | /* set master/slave audio interface */ |
| 492 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 493 | case SND_SOC_DAIFMT_CBM_CFM: |
| 494 | iface = 0x0040; |
| 495 | break; |
| 496 | case SND_SOC_DAIFMT_CBS_CFS: |
| 497 | break; |
| 498 | default: |
| 499 | return -EINVAL; |
| 500 | } |
| 501 | |
| 502 | /* interface format */ |
| 503 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 504 | case SND_SOC_DAIFMT_I2S: |
| 505 | iface |= 0x0002; |
| 506 | break; |
| 507 | case SND_SOC_DAIFMT_RIGHT_J: |
| 508 | break; |
| 509 | case SND_SOC_DAIFMT_LEFT_J: |
| 510 | iface |= 0x0001; |
| 511 | break; |
| 512 | case SND_SOC_DAIFMT_DSP_A: |
| 513 | iface |= 0x0003; |
| 514 | break; |
| 515 | case SND_SOC_DAIFMT_DSP_B: |
| 516 | iface |= 0x0013; |
| 517 | break; |
| 518 | default: |
| 519 | return -EINVAL; |
| 520 | } |
| 521 | |
| 522 | /* clock inversion */ |
| 523 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 524 | case SND_SOC_DAIFMT_NB_NF: |
| 525 | break; |
| 526 | case SND_SOC_DAIFMT_IB_IF: |
| 527 | iface |= 0x0090; |
| 528 | break; |
| 529 | case SND_SOC_DAIFMT_IB_NF: |
| 530 | iface |= 0x0080; |
| 531 | break; |
| 532 | case SND_SOC_DAIFMT_NB_IF: |
| 533 | iface |= 0x0010; |
| 534 | break; |
| 535 | default: |
| 536 | return -EINVAL; |
| 537 | } |
| 538 | |
| 539 | wm8971_write(codec, WM8971_IFACE, iface); |
| 540 | return 0; |
| 541 | } |
| 542 | |
| 543 | static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream, |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame^] | 544 | struct snd_pcm_hw_params *params, |
| 545 | struct snd_soc_dai *dai) |
Kenneth Kiraly | 8bae3e2 | 2008-09-10 19:33:32 +0100 | [diff] [blame] | 546 | { |
| 547 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 548 | struct snd_soc_device *socdev = rtd->socdev; |
| 549 | struct snd_soc_codec *codec = socdev->codec; |
| 550 | struct wm8971_priv *wm8971 = codec->private_data; |
| 551 | u16 iface = wm8971_read_reg_cache(codec, WM8971_IFACE) & 0x1f3; |
| 552 | u16 srate = wm8971_read_reg_cache(codec, WM8971_SRATE) & 0x1c0; |
| 553 | int coeff = get_coeff(wm8971->sysclk, params_rate(params)); |
| 554 | |
| 555 | /* bit size */ |
| 556 | switch (params_format(params)) { |
| 557 | case SNDRV_PCM_FORMAT_S16_LE: |
| 558 | break; |
| 559 | case SNDRV_PCM_FORMAT_S20_3LE: |
| 560 | iface |= 0x0004; |
| 561 | break; |
| 562 | case SNDRV_PCM_FORMAT_S24_LE: |
| 563 | iface |= 0x0008; |
| 564 | break; |
| 565 | case SNDRV_PCM_FORMAT_S32_LE: |
| 566 | iface |= 0x000c; |
| 567 | break; |
| 568 | } |
| 569 | |
| 570 | /* set iface & srate */ |
| 571 | wm8971_write(codec, WM8971_IFACE, iface); |
| 572 | if (coeff >= 0) |
| 573 | wm8971_write(codec, WM8971_SRATE, srate | |
| 574 | (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); |
| 575 | |
| 576 | return 0; |
| 577 | } |
| 578 | |
| 579 | static int wm8971_mute(struct snd_soc_dai *dai, int mute) |
| 580 | { |
| 581 | struct snd_soc_codec *codec = dai->codec; |
| 582 | u16 mute_reg = wm8971_read_reg_cache(codec, WM8971_ADCDAC) & 0xfff7; |
| 583 | |
| 584 | if (mute) |
| 585 | wm8971_write(codec, WM8971_ADCDAC, mute_reg | 0x8); |
| 586 | else |
| 587 | wm8971_write(codec, WM8971_ADCDAC, mute_reg); |
| 588 | return 0; |
| 589 | } |
| 590 | |
| 591 | static int wm8971_set_bias_level(struct snd_soc_codec *codec, |
| 592 | enum snd_soc_bias_level level) |
| 593 | { |
| 594 | u16 pwr_reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e; |
| 595 | |
| 596 | switch (level) { |
| 597 | case SND_SOC_BIAS_ON: |
| 598 | /* set vmid to 50k and unmute dac */ |
| 599 | wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x00c1); |
| 600 | break; |
| 601 | case SND_SOC_BIAS_PREPARE: |
| 602 | break; |
| 603 | case SND_SOC_BIAS_STANDBY: |
| 604 | /* mute dac and set vmid to 500k, enable VREF */ |
| 605 | wm8971_write(codec, WM8971_PWR1, pwr_reg | 0x0140); |
| 606 | break; |
| 607 | case SND_SOC_BIAS_OFF: |
| 608 | wm8971_write(codec, WM8971_PWR1, 0x0001); |
| 609 | break; |
| 610 | } |
| 611 | codec->bias_level = level; |
| 612 | return 0; |
| 613 | } |
| 614 | |
| 615 | #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
| 616 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \ |
| 617 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) |
| 618 | |
| 619 | #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
| 620 | SNDRV_PCM_FMTBIT_S24_LE) |
| 621 | |
| 622 | struct snd_soc_dai wm8971_dai = { |
| 623 | .name = "WM8971", |
| 624 | .playback = { |
| 625 | .stream_name = "Playback", |
| 626 | .channels_min = 1, |
| 627 | .channels_max = 2, |
| 628 | .rates = WM8971_RATES, |
| 629 | .formats = WM8971_FORMATS,}, |
| 630 | .capture = { |
| 631 | .stream_name = "Capture", |
| 632 | .channels_min = 1, |
| 633 | .channels_max = 2, |
| 634 | .rates = WM8971_RATES, |
| 635 | .formats = WM8971_FORMATS,}, |
| 636 | .ops = { |
| 637 | .hw_params = wm8971_pcm_hw_params, |
Kenneth Kiraly | 8bae3e2 | 2008-09-10 19:33:32 +0100 | [diff] [blame] | 638 | .digital_mute = wm8971_mute, |
| 639 | .set_fmt = wm8971_set_dai_fmt, |
| 640 | .set_sysclk = wm8971_set_dai_sysclk, |
| 641 | }, |
| 642 | }; |
| 643 | EXPORT_SYMBOL_GPL(wm8971_dai); |
| 644 | |
| 645 | static void wm8971_work(struct work_struct *work) |
| 646 | { |
| 647 | struct snd_soc_codec *codec = |
| 648 | container_of(work, struct snd_soc_codec, delayed_work.work); |
| 649 | wm8971_set_bias_level(codec, codec->bias_level); |
| 650 | } |
| 651 | |
| 652 | static int wm8971_suspend(struct platform_device *pdev, pm_message_t state) |
| 653 | { |
| 654 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 655 | struct snd_soc_codec *codec = socdev->codec; |
| 656 | |
| 657 | wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| 658 | return 0; |
| 659 | } |
| 660 | |
| 661 | static int wm8971_resume(struct platform_device *pdev) |
| 662 | { |
| 663 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 664 | struct snd_soc_codec *codec = socdev->codec; |
| 665 | int i; |
| 666 | u8 data[2]; |
| 667 | u16 *cache = codec->reg_cache; |
| 668 | u16 reg; |
| 669 | |
| 670 | /* Sync reg_cache with the hardware */ |
| 671 | for (i = 0; i < ARRAY_SIZE(wm8971_reg); i++) { |
| 672 | if (i + 1 == WM8971_RESET) |
| 673 | continue; |
| 674 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| 675 | data[1] = cache[i] & 0x00ff; |
| 676 | codec->hw_write(codec->control_data, data, 2); |
| 677 | } |
| 678 | |
| 679 | wm8971_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 680 | |
| 681 | /* charge wm8971 caps */ |
| 682 | if (codec->suspend_bias_level == SND_SOC_BIAS_ON) { |
| 683 | reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e; |
| 684 | wm8971_write(codec, WM8971_PWR1, reg | 0x01c0); |
| 685 | codec->bias_level = SND_SOC_BIAS_ON; |
| 686 | queue_delayed_work(wm8971_workq, &codec->delayed_work, |
| 687 | msecs_to_jiffies(1000)); |
| 688 | } |
| 689 | |
| 690 | return 0; |
| 691 | } |
| 692 | |
| 693 | static int wm8971_init(struct snd_soc_device *socdev) |
| 694 | { |
| 695 | struct snd_soc_codec *codec = socdev->codec; |
| 696 | int reg, ret = 0; |
| 697 | |
| 698 | codec->name = "WM8971"; |
| 699 | codec->owner = THIS_MODULE; |
| 700 | codec->read = wm8971_read_reg_cache; |
| 701 | codec->write = wm8971_write; |
| 702 | codec->set_bias_level = wm8971_set_bias_level; |
| 703 | codec->dai = &wm8971_dai; |
| 704 | codec->reg_cache_size = ARRAY_SIZE(wm8971_reg); |
| 705 | codec->num_dai = 1; |
| 706 | codec->reg_cache = kmemdup(wm8971_reg, sizeof(wm8971_reg), GFP_KERNEL); |
| 707 | |
| 708 | if (codec->reg_cache == NULL) |
| 709 | return -ENOMEM; |
| 710 | |
| 711 | wm8971_reset(codec); |
| 712 | |
| 713 | /* register pcms */ |
| 714 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
| 715 | if (ret < 0) { |
| 716 | printk(KERN_ERR "wm8971: failed to create pcms\n"); |
| 717 | goto pcm_err; |
| 718 | } |
| 719 | |
| 720 | /* charge output caps - set vmid to 5k for quick power up */ |
| 721 | reg = wm8971_read_reg_cache(codec, WM8971_PWR1) & 0xfe3e; |
| 722 | wm8971_write(codec, WM8971_PWR1, reg | 0x01c0); |
| 723 | codec->bias_level = SND_SOC_BIAS_STANDBY; |
| 724 | queue_delayed_work(wm8971_workq, &codec->delayed_work, |
| 725 | msecs_to_jiffies(1000)); |
| 726 | |
| 727 | /* set the update bits */ |
| 728 | reg = wm8971_read_reg_cache(codec, WM8971_LDAC); |
| 729 | wm8971_write(codec, WM8971_LDAC, reg | 0x0100); |
| 730 | reg = wm8971_read_reg_cache(codec, WM8971_RDAC); |
| 731 | wm8971_write(codec, WM8971_RDAC, reg | 0x0100); |
| 732 | |
| 733 | reg = wm8971_read_reg_cache(codec, WM8971_LOUT1V); |
| 734 | wm8971_write(codec, WM8971_LOUT1V, reg | 0x0100); |
| 735 | reg = wm8971_read_reg_cache(codec, WM8971_ROUT1V); |
| 736 | wm8971_write(codec, WM8971_ROUT1V, reg | 0x0100); |
| 737 | |
| 738 | reg = wm8971_read_reg_cache(codec, WM8971_LOUT2V); |
| 739 | wm8971_write(codec, WM8971_LOUT2V, reg | 0x0100); |
| 740 | reg = wm8971_read_reg_cache(codec, WM8971_ROUT2V); |
| 741 | wm8971_write(codec, WM8971_ROUT2V, reg | 0x0100); |
| 742 | |
| 743 | reg = wm8971_read_reg_cache(codec, WM8971_LINVOL); |
| 744 | wm8971_write(codec, WM8971_LINVOL, reg | 0x0100); |
| 745 | reg = wm8971_read_reg_cache(codec, WM8971_RINVOL); |
| 746 | wm8971_write(codec, WM8971_RINVOL, reg | 0x0100); |
| 747 | |
| 748 | wm8971_add_controls(codec); |
| 749 | wm8971_add_widgets(codec); |
| 750 | ret = snd_soc_register_card(socdev); |
| 751 | if (ret < 0) { |
| 752 | printk(KERN_ERR "wm8971: failed to register card\n"); |
| 753 | goto card_err; |
| 754 | } |
| 755 | return ret; |
| 756 | |
| 757 | card_err: |
| 758 | snd_soc_free_pcms(socdev); |
| 759 | snd_soc_dapm_free(socdev); |
| 760 | pcm_err: |
| 761 | kfree(codec->reg_cache); |
| 762 | return ret; |
| 763 | } |
| 764 | |
| 765 | /* If the i2c layer weren't so broken, we could pass this kind of data |
| 766 | around */ |
| 767 | static struct snd_soc_device *wm8971_socdev; |
| 768 | |
| 769 | #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) |
| 770 | |
| 771 | static int wm8971_i2c_probe(struct i2c_client *i2c, |
| 772 | const struct i2c_device_id *id) |
| 773 | { |
| 774 | struct snd_soc_device *socdev = wm8971_socdev; |
| 775 | struct snd_soc_codec *codec = socdev->codec; |
| 776 | int ret; |
| 777 | |
| 778 | i2c_set_clientdata(i2c, codec); |
| 779 | |
| 780 | codec->control_data = i2c; |
| 781 | |
| 782 | ret = wm8971_init(socdev); |
| 783 | if (ret < 0) |
| 784 | pr_err("failed to initialise WM8971\n"); |
| 785 | |
| 786 | return ret; |
| 787 | } |
| 788 | |
| 789 | static int wm8971_i2c_remove(struct i2c_client *client) |
| 790 | { |
| 791 | struct snd_soc_codec *codec = i2c_get_clientdata(client); |
| 792 | kfree(codec->reg_cache); |
| 793 | return 0; |
| 794 | } |
| 795 | |
| 796 | static const struct i2c_device_id wm8971_i2c_id[] = { |
| 797 | { "wm8971", 0 }, |
| 798 | { } |
| 799 | }; |
| 800 | MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id); |
| 801 | |
| 802 | static struct i2c_driver wm8971_i2c_driver = { |
| 803 | .driver = { |
| 804 | .name = "WM8971 I2C Codec", |
| 805 | .owner = THIS_MODULE, |
| 806 | }, |
| 807 | .probe = wm8971_i2c_probe, |
| 808 | .remove = wm8971_i2c_remove, |
| 809 | .id_table = wm8971_i2c_id, |
| 810 | }; |
| 811 | |
| 812 | static int wm8971_add_i2c_device(struct platform_device *pdev, |
| 813 | const struct wm8971_setup_data *setup) |
| 814 | { |
| 815 | struct i2c_board_info info; |
| 816 | struct i2c_adapter *adapter; |
| 817 | struct i2c_client *client; |
| 818 | int ret; |
| 819 | |
| 820 | ret = i2c_add_driver(&wm8971_i2c_driver); |
| 821 | if (ret != 0) { |
| 822 | dev_err(&pdev->dev, "can't add i2c driver\n"); |
| 823 | return ret; |
| 824 | } |
| 825 | |
| 826 | memset(&info, 0, sizeof(struct i2c_board_info)); |
| 827 | info.addr = setup->i2c_address; |
| 828 | strlcpy(info.type, "wm8971", I2C_NAME_SIZE); |
| 829 | |
| 830 | adapter = i2c_get_adapter(setup->i2c_bus); |
| 831 | if (!adapter) { |
| 832 | dev_err(&pdev->dev, "can't get i2c adapter %d\n", |
| 833 | setup->i2c_bus); |
| 834 | goto err_driver; |
| 835 | } |
| 836 | |
| 837 | client = i2c_new_device(adapter, &info); |
| 838 | i2c_put_adapter(adapter); |
| 839 | if (!client) { |
| 840 | dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", |
| 841 | (unsigned int)info.addr); |
| 842 | goto err_driver; |
| 843 | } |
| 844 | |
| 845 | return 0; |
| 846 | |
| 847 | err_driver: |
| 848 | i2c_del_driver(&wm8971_i2c_driver); |
| 849 | return -ENODEV; |
| 850 | } |
| 851 | |
| 852 | #endif |
| 853 | |
| 854 | static int wm8971_probe(struct platform_device *pdev) |
| 855 | { |
| 856 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 857 | struct wm8971_setup_data *setup; |
| 858 | struct snd_soc_codec *codec; |
| 859 | struct wm8971_priv *wm8971; |
| 860 | int ret = 0; |
| 861 | |
| 862 | pr_info("WM8971 Audio Codec %s", WM8971_VERSION); |
| 863 | |
| 864 | setup = socdev->codec_data; |
| 865 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); |
| 866 | if (codec == NULL) |
| 867 | return -ENOMEM; |
| 868 | |
| 869 | wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL); |
| 870 | if (wm8971 == NULL) { |
| 871 | kfree(codec); |
| 872 | return -ENOMEM; |
| 873 | } |
| 874 | |
| 875 | codec->private_data = wm8971; |
| 876 | socdev->codec = codec; |
| 877 | mutex_init(&codec->mutex); |
| 878 | INIT_LIST_HEAD(&codec->dapm_widgets); |
| 879 | INIT_LIST_HEAD(&codec->dapm_paths); |
| 880 | wm8971_socdev = socdev; |
| 881 | |
| 882 | INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work); |
| 883 | wm8971_workq = create_workqueue("wm8971"); |
| 884 | if (wm8971_workq == NULL) { |
| 885 | kfree(codec->private_data); |
| 886 | kfree(codec); |
| 887 | return -ENOMEM; |
| 888 | } |
| 889 | |
| 890 | #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) |
| 891 | if (setup->i2c_address) { |
| 892 | codec->hw_write = (hw_write_t)i2c_master_send; |
| 893 | ret = wm8971_add_i2c_device(pdev, setup); |
| 894 | } |
| 895 | #endif |
| 896 | /* Add other interfaces here */ |
| 897 | |
| 898 | if (ret != 0) { |
| 899 | destroy_workqueue(wm8971_workq); |
| 900 | kfree(codec->private_data); |
| 901 | kfree(codec); |
| 902 | } |
| 903 | |
| 904 | return ret; |
| 905 | } |
| 906 | |
| 907 | /* power down chip */ |
| 908 | static int wm8971_remove(struct platform_device *pdev) |
| 909 | { |
| 910 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 911 | struct snd_soc_codec *codec = socdev->codec; |
| 912 | |
| 913 | if (codec->control_data) |
| 914 | wm8971_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| 915 | if (wm8971_workq) |
| 916 | destroy_workqueue(wm8971_workq); |
| 917 | snd_soc_free_pcms(socdev); |
| 918 | snd_soc_dapm_free(socdev); |
| 919 | #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE) |
| 920 | i2c_unregister_device(codec->control_data); |
| 921 | i2c_del_driver(&wm8971_i2c_driver); |
| 922 | #endif |
| 923 | kfree(codec->private_data); |
| 924 | kfree(codec); |
| 925 | |
| 926 | return 0; |
| 927 | } |
| 928 | |
| 929 | struct snd_soc_codec_device soc_codec_dev_wm8971 = { |
| 930 | .probe = wm8971_probe, |
| 931 | .remove = wm8971_remove, |
| 932 | .suspend = wm8971_suspend, |
| 933 | .resume = wm8971_resume, |
| 934 | }; |
| 935 | |
| 936 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8971); |
| 937 | |
| 938 | MODULE_DESCRIPTION("ASoC WM8971 driver"); |
| 939 | MODULE_AUTHOR("Lab126"); |
| 940 | MODULE_LICENSE("GPL"); |