Mark Brown | f2644a2 | 2009-04-07 19:20:14 +0100 | [diff] [blame] | 1 | /* |
| 2 | * wm8960.c -- WM8960 ALSA SoC Audio driver |
| 3 | * |
| 4 | * Author: Liam Girdwood |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/moduleparam.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/delay.h> |
| 15 | #include <linux/pm.h> |
| 16 | #include <linux/i2c.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <sound/core.h> |
| 19 | #include <sound/pcm.h> |
| 20 | #include <sound/pcm_params.h> |
| 21 | #include <sound/soc.h> |
| 22 | #include <sound/soc-dapm.h> |
| 23 | #include <sound/initval.h> |
| 24 | #include <sound/tlv.h> |
| 25 | |
| 26 | #include "wm8960.h" |
| 27 | |
| 28 | #define AUDIO_NAME "wm8960" |
| 29 | |
| 30 | struct snd_soc_codec_device soc_codec_dev_wm8960; |
| 31 | |
| 32 | /* R25 - Power 1 */ |
| 33 | #define WM8960_VREF 0x40 |
| 34 | |
| 35 | /* R28 - Anti-pop 1 */ |
| 36 | #define WM8960_POBCTRL 0x80 |
| 37 | #define WM8960_BUFDCOPEN 0x10 |
| 38 | #define WM8960_BUFIOEN 0x08 |
| 39 | #define WM8960_SOFT_ST 0x04 |
| 40 | #define WM8960_HPSTBY 0x01 |
| 41 | |
| 42 | /* R29 - Anti-pop 2 */ |
| 43 | #define WM8960_DISOP 0x40 |
| 44 | |
| 45 | /* |
| 46 | * wm8960 register cache |
| 47 | * We can't read the WM8960 register space when we are |
| 48 | * using 2 wire for device control, so we cache them instead. |
| 49 | */ |
| 50 | static const u16 wm8960_reg[WM8960_CACHEREGNUM] = { |
| 51 | 0x0097, 0x0097, 0x0000, 0x0000, |
| 52 | 0x0000, 0x0008, 0x0000, 0x000a, |
| 53 | 0x01c0, 0x0000, 0x00ff, 0x00ff, |
| 54 | 0x0000, 0x0000, 0x0000, 0x0000, |
| 55 | 0x0000, 0x007b, 0x0100, 0x0032, |
| 56 | 0x0000, 0x00c3, 0x00c3, 0x01c0, |
| 57 | 0x0000, 0x0000, 0x0000, 0x0000, |
| 58 | 0x0000, 0x0000, 0x0000, 0x0000, |
| 59 | 0x0100, 0x0100, 0x0050, 0x0050, |
| 60 | 0x0050, 0x0050, 0x0000, 0x0000, |
| 61 | 0x0000, 0x0000, 0x0040, 0x0000, |
| 62 | 0x0000, 0x0050, 0x0050, 0x0000, |
| 63 | 0x0002, 0x0037, 0x004d, 0x0080, |
| 64 | 0x0008, 0x0031, 0x0026, 0x00e9, |
| 65 | }; |
| 66 | |
| 67 | struct wm8960_priv { |
| 68 | u16 reg_cache[WM8960_CACHEREGNUM]; |
| 69 | struct snd_soc_codec codec; |
| 70 | }; |
| 71 | |
| 72 | /* |
| 73 | * read wm8960 register cache |
| 74 | */ |
| 75 | static inline unsigned int wm8960_read_reg_cache(struct snd_soc_codec *codec, |
| 76 | unsigned int reg) |
| 77 | { |
| 78 | u16 *cache = codec->reg_cache; |
| 79 | if (reg == WM8960_RESET) |
| 80 | return 0; |
| 81 | if (reg >= WM8960_CACHEREGNUM) |
| 82 | return -1; |
| 83 | return cache[reg]; |
| 84 | } |
| 85 | |
| 86 | /* |
| 87 | * write wm8960 register cache |
| 88 | */ |
| 89 | static inline void wm8960_write_reg_cache(struct snd_soc_codec *codec, |
| 90 | u16 reg, unsigned int value) |
| 91 | { |
| 92 | u16 *cache = codec->reg_cache; |
| 93 | if (reg >= WM8960_CACHEREGNUM) |
| 94 | return; |
| 95 | cache[reg] = value; |
| 96 | } |
| 97 | |
| 98 | static inline unsigned int wm8960_read(struct snd_soc_codec *codec, |
| 99 | unsigned int reg) |
| 100 | { |
| 101 | return wm8960_read_reg_cache(codec, reg); |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * write to the WM8960 register space |
| 106 | */ |
| 107 | static int wm8960_write(struct snd_soc_codec *codec, unsigned int reg, |
| 108 | unsigned int value) |
| 109 | { |
| 110 | u8 data[2]; |
| 111 | |
| 112 | /* data is |
| 113 | * D15..D9 WM8960 register offset |
| 114 | * D8...D0 register data |
| 115 | */ |
| 116 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); |
| 117 | data[1] = value & 0x00ff; |
| 118 | |
| 119 | wm8960_write_reg_cache(codec, reg, value); |
| 120 | if (codec->hw_write(codec->control_data, data, 2) == 2) |
| 121 | return 0; |
| 122 | else |
| 123 | return -EIO; |
| 124 | } |
| 125 | |
| 126 | #define wm8960_reset(c) wm8960_write(c, WM8960_RESET, 0) |
| 127 | |
| 128 | /* enumerated controls */ |
| 129 | static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; |
| 130 | static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted", |
| 131 | "Right Inverted", "Stereo Inversion"}; |
| 132 | static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"}; |
| 133 | static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"}; |
| 134 | static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"}; |
| 135 | static const char *wm8960_alcmode[] = {"ALC", "Limiter"}; |
| 136 | |
| 137 | static const struct soc_enum wm8960_enum[] = { |
| 138 | SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph), |
| 139 | SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity), |
| 140 | SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity), |
| 141 | SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff), |
| 142 | SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff), |
| 143 | SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc), |
| 144 | SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode), |
| 145 | }; |
| 146 | |
| 147 | static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0); |
| 148 | static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1); |
| 149 | static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0); |
| 150 | static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); |
| 151 | |
| 152 | static const struct snd_kcontrol_new wm8960_snd_controls[] = { |
| 153 | SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL, |
| 154 | 0, 63, 0, adc_tlv), |
| 155 | SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL, |
| 156 | 6, 1, 0), |
| 157 | SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL, |
| 158 | 7, 1, 0), |
| 159 | |
| 160 | SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC, |
| 161 | 0, 255, 0, dac_tlv), |
| 162 | |
| 163 | SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1, |
| 164 | 0, 127, 0, out_tlv), |
| 165 | SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1, |
| 166 | 7, 1, 0), |
| 167 | |
| 168 | SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2, |
| 169 | 0, 127, 0, out_tlv), |
| 170 | SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2, |
| 171 | 7, 1, 0), |
| 172 | SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0), |
| 173 | SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0), |
| 174 | |
| 175 | SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0), |
| 176 | SOC_ENUM("ADC Polarity", wm8960_enum[1]), |
| 177 | SOC_ENUM("Playback De-emphasis", wm8960_enum[0]), |
| 178 | SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0), |
| 179 | |
| 180 | SOC_ENUM("DAC Polarity", wm8960_enum[2]), |
| 181 | |
| 182 | SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]), |
| 183 | SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]), |
| 184 | SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), |
| 185 | SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0), |
| 186 | |
| 187 | SOC_ENUM("ALC Function", wm8960_enum[5]), |
| 188 | SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0), |
| 189 | SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1), |
| 190 | SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0), |
| 191 | SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0), |
| 192 | SOC_ENUM("ALC Mode", wm8960_enum[6]), |
| 193 | SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0), |
| 194 | SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0), |
| 195 | |
| 196 | SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0), |
| 197 | SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0), |
| 198 | |
| 199 | SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH, |
| 200 | 0, 127, 0), |
| 201 | |
| 202 | SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume", |
| 203 | WM8960_BYPASS1, 4, 7, 1, bypass_tlv), |
| 204 | SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume", |
| 205 | WM8960_LOUTMIX, 4, 7, 1, bypass_tlv), |
| 206 | SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume", |
| 207 | WM8960_BYPASS2, 4, 7, 1, bypass_tlv), |
| 208 | SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume", |
| 209 | WM8960_ROUTMIX, 4, 7, 1, bypass_tlv), |
| 210 | }; |
| 211 | |
| 212 | static const struct snd_kcontrol_new wm8960_lin_boost[] = { |
| 213 | SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0), |
| 214 | SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0), |
| 215 | SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0), |
| 216 | }; |
| 217 | |
| 218 | static const struct snd_kcontrol_new wm8960_lin[] = { |
| 219 | SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0), |
| 220 | }; |
| 221 | |
| 222 | static const struct snd_kcontrol_new wm8960_rin_boost[] = { |
| 223 | SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0), |
| 224 | SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0), |
| 225 | SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0), |
| 226 | }; |
| 227 | |
| 228 | static const struct snd_kcontrol_new wm8960_rin[] = { |
| 229 | SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0), |
| 230 | }; |
| 231 | |
| 232 | static const struct snd_kcontrol_new wm8960_loutput_mixer[] = { |
| 233 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0), |
| 234 | SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0), |
| 235 | SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0), |
| 236 | }; |
| 237 | |
| 238 | static const struct snd_kcontrol_new wm8960_routput_mixer[] = { |
| 239 | SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0), |
| 240 | SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0), |
| 241 | SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0), |
| 242 | }; |
| 243 | |
| 244 | static const struct snd_kcontrol_new wm8960_mono_out[] = { |
| 245 | SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0), |
| 246 | SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0), |
| 247 | }; |
| 248 | |
| 249 | static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = { |
| 250 | SND_SOC_DAPM_INPUT("LINPUT1"), |
| 251 | SND_SOC_DAPM_INPUT("RINPUT1"), |
| 252 | SND_SOC_DAPM_INPUT("LINPUT2"), |
| 253 | SND_SOC_DAPM_INPUT("RINPUT2"), |
| 254 | SND_SOC_DAPM_INPUT("LINPUT3"), |
| 255 | SND_SOC_DAPM_INPUT("RINPUT3"), |
| 256 | |
| 257 | SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0), |
| 258 | |
| 259 | SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0, |
| 260 | wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)), |
| 261 | SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0, |
| 262 | wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)), |
| 263 | |
| 264 | SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, |
| 265 | wm8960_lin, ARRAY_SIZE(wm8960_lin)), |
| 266 | SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, |
| 267 | wm8960_rin, ARRAY_SIZE(wm8960_rin)), |
| 268 | |
| 269 | SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0), |
| 270 | SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0), |
| 271 | |
| 272 | SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), |
| 273 | SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), |
| 274 | |
| 275 | SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0, |
| 276 | &wm8960_loutput_mixer[0], |
| 277 | ARRAY_SIZE(wm8960_loutput_mixer)), |
| 278 | SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0, |
| 279 | &wm8960_routput_mixer[0], |
| 280 | ARRAY_SIZE(wm8960_routput_mixer)), |
| 281 | |
| 282 | SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0, |
| 283 | &wm8960_mono_out[0], |
| 284 | ARRAY_SIZE(wm8960_mono_out)), |
| 285 | |
| 286 | SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0), |
| 287 | SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0), |
| 288 | |
| 289 | SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0), |
| 290 | SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0), |
| 291 | |
| 292 | SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0), |
| 293 | SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0), |
| 294 | |
| 295 | SND_SOC_DAPM_OUTPUT("SPK_LP"), |
| 296 | SND_SOC_DAPM_OUTPUT("SPK_LN"), |
| 297 | SND_SOC_DAPM_OUTPUT("HP_L"), |
| 298 | SND_SOC_DAPM_OUTPUT("HP_R"), |
| 299 | SND_SOC_DAPM_OUTPUT("SPK_RP"), |
| 300 | SND_SOC_DAPM_OUTPUT("SPK_RN"), |
| 301 | SND_SOC_DAPM_OUTPUT("OUT3"), |
| 302 | }; |
| 303 | |
| 304 | static const struct snd_soc_dapm_route audio_paths[] = { |
| 305 | { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" }, |
| 306 | { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" }, |
| 307 | { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" }, |
| 308 | |
| 309 | { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", }, |
| 310 | { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */ |
| 311 | { "Left Input Mixer", NULL, "LINPUT2" }, |
| 312 | { "Left Input Mixer", NULL, "LINPUT3" }, |
| 313 | |
| 314 | { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" }, |
| 315 | { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" }, |
| 316 | { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" }, |
| 317 | |
| 318 | { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", }, |
| 319 | { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */ |
| 320 | { "Right Input Mixer", NULL, "RINPUT2" }, |
| 321 | { "Right Input Mixer", NULL, "LINPUT3" }, |
| 322 | |
| 323 | { "Left ADC", NULL, "Left Input Mixer" }, |
| 324 | { "Right ADC", NULL, "Right Input Mixer" }, |
| 325 | |
| 326 | { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" }, |
| 327 | { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} , |
| 328 | { "Left Output Mixer", "PCM Playback Switch", "Left DAC" }, |
| 329 | |
| 330 | { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" }, |
| 331 | { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } , |
| 332 | { "Right Output Mixer", "PCM Playback Switch", "Right DAC" }, |
| 333 | |
| 334 | { "Mono Output Mixer", "Left Switch", "Left Output Mixer" }, |
| 335 | { "Mono Output Mixer", "Right Switch", "Right Output Mixer" }, |
| 336 | |
| 337 | { "LOUT1 PGA", NULL, "Left Output Mixer" }, |
| 338 | { "ROUT1 PGA", NULL, "Right Output Mixer" }, |
| 339 | |
| 340 | { "HP_L", NULL, "LOUT1 PGA" }, |
| 341 | { "HP_R", NULL, "ROUT1 PGA" }, |
| 342 | |
| 343 | { "Left Speaker PGA", NULL, "Left Output Mixer" }, |
| 344 | { "Right Speaker PGA", NULL, "Right Output Mixer" }, |
| 345 | |
| 346 | { "Left Speaker Output", NULL, "Left Speaker PGA" }, |
| 347 | { "Right Speaker Output", NULL, "Right Speaker PGA" }, |
| 348 | |
| 349 | { "SPK_LN", NULL, "Left Speaker Output" }, |
| 350 | { "SPK_LP", NULL, "Left Speaker Output" }, |
| 351 | { "SPK_RN", NULL, "Right Speaker Output" }, |
| 352 | { "SPK_RP", NULL, "Right Speaker Output" }, |
| 353 | |
| 354 | { "OUT3", NULL, "Mono Output Mixer", } |
| 355 | }; |
| 356 | |
| 357 | static int wm8960_add_widgets(struct snd_soc_codec *codec) |
| 358 | { |
| 359 | snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets, |
| 360 | ARRAY_SIZE(wm8960_dapm_widgets)); |
| 361 | |
| 362 | snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); |
| 363 | |
| 364 | snd_soc_dapm_new_widgets(codec); |
| 365 | return 0; |
| 366 | } |
| 367 | |
| 368 | static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, |
| 369 | unsigned int fmt) |
| 370 | { |
| 371 | struct snd_soc_codec *codec = codec_dai->codec; |
| 372 | u16 iface = 0; |
| 373 | |
| 374 | /* set master/slave audio interface */ |
| 375 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 376 | case SND_SOC_DAIFMT_CBM_CFM: |
| 377 | iface |= 0x0040; |
| 378 | break; |
| 379 | case SND_SOC_DAIFMT_CBS_CFS: |
| 380 | break; |
| 381 | default: |
| 382 | return -EINVAL; |
| 383 | } |
| 384 | |
| 385 | /* interface format */ |
| 386 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 387 | case SND_SOC_DAIFMT_I2S: |
| 388 | iface |= 0x0002; |
| 389 | break; |
| 390 | case SND_SOC_DAIFMT_RIGHT_J: |
| 391 | break; |
| 392 | case SND_SOC_DAIFMT_LEFT_J: |
| 393 | iface |= 0x0001; |
| 394 | break; |
| 395 | case SND_SOC_DAIFMT_DSP_A: |
| 396 | iface |= 0x0003; |
| 397 | break; |
| 398 | case SND_SOC_DAIFMT_DSP_B: |
| 399 | iface |= 0x0013; |
| 400 | break; |
| 401 | default: |
| 402 | return -EINVAL; |
| 403 | } |
| 404 | |
| 405 | /* clock inversion */ |
| 406 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| 407 | case SND_SOC_DAIFMT_NB_NF: |
| 408 | break; |
| 409 | case SND_SOC_DAIFMT_IB_IF: |
| 410 | iface |= 0x0090; |
| 411 | break; |
| 412 | case SND_SOC_DAIFMT_IB_NF: |
| 413 | iface |= 0x0080; |
| 414 | break; |
| 415 | case SND_SOC_DAIFMT_NB_IF: |
| 416 | iface |= 0x0010; |
| 417 | break; |
| 418 | default: |
| 419 | return -EINVAL; |
| 420 | } |
| 421 | |
| 422 | /* set iface */ |
| 423 | wm8960_write(codec, WM8960_IFACE1, iface); |
| 424 | return 0; |
| 425 | } |
| 426 | |
| 427 | static int wm8960_hw_params(struct snd_pcm_substream *substream, |
| 428 | struct snd_pcm_hw_params *params, |
| 429 | struct snd_soc_dai *dai) |
| 430 | { |
| 431 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 432 | struct snd_soc_device *socdev = rtd->socdev; |
| 433 | struct snd_soc_codec *codec = socdev->card->codec; |
| 434 | u16 iface = wm8960_read(codec, WM8960_IFACE1) & 0xfff3; |
| 435 | |
| 436 | /* bit size */ |
| 437 | switch (params_format(params)) { |
| 438 | case SNDRV_PCM_FORMAT_S16_LE: |
| 439 | break; |
| 440 | case SNDRV_PCM_FORMAT_S20_3LE: |
| 441 | iface |= 0x0004; |
| 442 | break; |
| 443 | case SNDRV_PCM_FORMAT_S24_LE: |
| 444 | iface |= 0x0008; |
| 445 | break; |
| 446 | } |
| 447 | |
| 448 | /* set iface */ |
| 449 | wm8960_write(codec, WM8960_IFACE1, iface); |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | static int wm8960_mute(struct snd_soc_dai *dai, int mute) |
| 454 | { |
| 455 | struct snd_soc_codec *codec = dai->codec; |
| 456 | u16 mute_reg = wm8960_read(codec, WM8960_DACCTL1) & 0xfff7; |
| 457 | |
| 458 | if (mute) |
| 459 | wm8960_write(codec, WM8960_DACCTL1, mute_reg | 0x8); |
| 460 | else |
| 461 | wm8960_write(codec, WM8960_DACCTL1, mute_reg); |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | static int wm8960_set_bias_level(struct snd_soc_codec *codec, |
| 466 | enum snd_soc_bias_level level) |
| 467 | { |
| 468 | struct wm8960_data *pdata = codec->dev->platform_data; |
| 469 | u16 reg; |
| 470 | |
| 471 | switch (level) { |
| 472 | case SND_SOC_BIAS_ON: |
| 473 | break; |
| 474 | |
| 475 | case SND_SOC_BIAS_PREPARE: |
| 476 | /* Set VMID to 2x50k */ |
| 477 | reg = wm8960_read(codec, WM8960_POWER1); |
| 478 | reg &= ~0x180; |
| 479 | reg |= 0x80; |
| 480 | wm8960_write(codec, WM8960_POWER1, reg); |
| 481 | break; |
| 482 | |
| 483 | case SND_SOC_BIAS_STANDBY: |
| 484 | if (codec->bias_level == SND_SOC_BIAS_OFF) { |
| 485 | /* Enable anti-pop features */ |
| 486 | wm8960_write(codec, WM8960_APOP1, |
| 487 | WM8960_POBCTRL | WM8960_SOFT_ST | |
| 488 | WM8960_BUFDCOPEN | WM8960_BUFIOEN); |
| 489 | |
| 490 | /* Discharge HP output */ |
| 491 | reg = WM8960_DISOP; |
| 492 | if (pdata) |
| 493 | reg |= pdata->dres << 4; |
| 494 | wm8960_write(codec, WM8960_APOP2, reg); |
| 495 | |
| 496 | msleep(400); |
| 497 | |
| 498 | wm8960_write(codec, WM8960_APOP2, 0); |
| 499 | |
| 500 | /* Enable & ramp VMID at 2x50k */ |
| 501 | reg = wm8960_read(codec, WM8960_POWER1); |
| 502 | reg |= 0x80; |
| 503 | wm8960_write(codec, WM8960_POWER1, reg); |
| 504 | msleep(100); |
| 505 | |
| 506 | /* Enable VREF */ |
| 507 | wm8960_write(codec, WM8960_POWER1, reg | WM8960_VREF); |
| 508 | |
| 509 | /* Disable anti-pop features */ |
| 510 | wm8960_write(codec, WM8960_APOP1, WM8960_BUFIOEN); |
| 511 | } |
| 512 | |
| 513 | /* Set VMID to 2x250k */ |
| 514 | reg = wm8960_read(codec, WM8960_POWER1); |
| 515 | reg &= ~0x180; |
| 516 | reg |= 0x100; |
| 517 | wm8960_write(codec, WM8960_POWER1, reg); |
| 518 | break; |
| 519 | |
| 520 | case SND_SOC_BIAS_OFF: |
| 521 | /* Enable anti-pop features */ |
| 522 | wm8960_write(codec, WM8960_APOP1, |
| 523 | WM8960_POBCTRL | WM8960_SOFT_ST | |
| 524 | WM8960_BUFDCOPEN | WM8960_BUFIOEN); |
| 525 | |
| 526 | /* Disable VMID and VREF, let them discharge */ |
| 527 | wm8960_write(codec, WM8960_POWER1, 0); |
| 528 | msleep(600); |
| 529 | |
| 530 | wm8960_write(codec, WM8960_APOP1, 0); |
| 531 | break; |
| 532 | } |
| 533 | |
| 534 | codec->bias_level = level; |
| 535 | |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | /* PLL divisors */ |
| 540 | struct _pll_div { |
| 541 | u32 pre_div:1; |
| 542 | u32 n:4; |
| 543 | u32 k:24; |
| 544 | }; |
| 545 | |
| 546 | /* The size in bits of the pll divide multiplied by 10 |
| 547 | * to allow rounding later */ |
| 548 | #define FIXED_PLL_SIZE ((1 << 24) * 10) |
| 549 | |
| 550 | static int pll_factors(unsigned int source, unsigned int target, |
| 551 | struct _pll_div *pll_div) |
| 552 | { |
| 553 | unsigned long long Kpart; |
| 554 | unsigned int K, Ndiv, Nmod; |
| 555 | |
| 556 | pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target); |
| 557 | |
| 558 | /* Scale up target to PLL operating frequency */ |
| 559 | target *= 4; |
| 560 | |
| 561 | Ndiv = target / source; |
| 562 | if (Ndiv < 6) { |
| 563 | source >>= 1; |
| 564 | pll_div->pre_div = 1; |
| 565 | Ndiv = target / source; |
| 566 | } else |
| 567 | pll_div->pre_div = 0; |
| 568 | |
| 569 | if ((Ndiv < 6) || (Ndiv > 12)) { |
| 570 | pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv); |
| 571 | return -EINVAL; |
| 572 | } |
| 573 | |
| 574 | pll_div->n = Ndiv; |
| 575 | Nmod = target % source; |
| 576 | Kpart = FIXED_PLL_SIZE * (long long)Nmod; |
| 577 | |
| 578 | do_div(Kpart, source); |
| 579 | |
| 580 | K = Kpart & 0xFFFFFFFF; |
| 581 | |
| 582 | /* Check if we need to round */ |
| 583 | if ((K % 10) >= 5) |
| 584 | K += 5; |
| 585 | |
| 586 | /* Move down to proper range now rounding is done */ |
| 587 | K /= 10; |
| 588 | |
| 589 | pll_div->k = K; |
| 590 | |
| 591 | pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n", |
| 592 | pll_div->n, pll_div->k, pll_div->pre_div); |
| 593 | |
| 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, |
| 598 | int pll_id, unsigned int freq_in, unsigned int freq_out) |
| 599 | { |
| 600 | struct snd_soc_codec *codec = codec_dai->codec; |
| 601 | u16 reg; |
| 602 | static struct _pll_div pll_div; |
| 603 | int ret; |
| 604 | |
| 605 | if (freq_in && freq_out) { |
| 606 | ret = pll_factors(freq_in, freq_out, &pll_div); |
| 607 | if (ret != 0) |
| 608 | return ret; |
| 609 | } |
| 610 | |
| 611 | /* Disable the PLL: even if we are changing the frequency the |
| 612 | * PLL needs to be disabled while we do so. */ |
| 613 | wm8960_write(codec, WM8960_CLOCK1, |
| 614 | wm8960_read(codec, WM8960_CLOCK1) & ~1); |
| 615 | wm8960_write(codec, WM8960_POWER2, |
| 616 | wm8960_read(codec, WM8960_POWER2) & ~1); |
| 617 | |
| 618 | if (!freq_in || !freq_out) |
| 619 | return 0; |
| 620 | |
| 621 | reg = wm8960_read(codec, WM8960_PLL1) & ~0x3f; |
| 622 | reg |= pll_div.pre_div << 4; |
| 623 | reg |= pll_div.n; |
| 624 | |
| 625 | if (pll_div.k) { |
| 626 | reg |= 0x20; |
| 627 | |
| 628 | wm8960_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f); |
| 629 | wm8960_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff); |
| 630 | wm8960_write(codec, WM8960_PLL4, pll_div.k & 0x1ff); |
| 631 | } |
| 632 | wm8960_write(codec, WM8960_PLL1, reg); |
| 633 | |
| 634 | /* Turn it on */ |
| 635 | wm8960_write(codec, WM8960_POWER2, |
| 636 | wm8960_read(codec, WM8960_POWER2) | 1); |
| 637 | msleep(250); |
| 638 | wm8960_write(codec, WM8960_CLOCK1, |
| 639 | wm8960_read(codec, WM8960_CLOCK1) | 1); |
| 640 | |
| 641 | return 0; |
| 642 | } |
| 643 | |
| 644 | static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai, |
| 645 | int div_id, int div) |
| 646 | { |
| 647 | struct snd_soc_codec *codec = codec_dai->codec; |
| 648 | u16 reg; |
| 649 | |
| 650 | switch (div_id) { |
| 651 | case WM8960_SYSCLKSEL: |
| 652 | reg = wm8960_read(codec, WM8960_CLOCK1) & 0x1fe; |
| 653 | wm8960_write(codec, WM8960_CLOCK1, reg | div); |
| 654 | break; |
| 655 | case WM8960_SYSCLKDIV: |
| 656 | reg = wm8960_read(codec, WM8960_CLOCK1) & 0x1f9; |
| 657 | wm8960_write(codec, WM8960_CLOCK1, reg | div); |
| 658 | break; |
| 659 | case WM8960_DACDIV: |
| 660 | reg = wm8960_read(codec, WM8960_CLOCK1) & 0x1c7; |
| 661 | wm8960_write(codec, WM8960_CLOCK1, reg | div); |
| 662 | break; |
| 663 | case WM8960_OPCLKDIV: |
| 664 | reg = wm8960_read(codec, WM8960_PLL1) & 0x03f; |
| 665 | wm8960_write(codec, WM8960_PLL1, reg | div); |
| 666 | break; |
| 667 | case WM8960_DCLKDIV: |
| 668 | reg = wm8960_read(codec, WM8960_CLOCK2) & 0x03f; |
| 669 | wm8960_write(codec, WM8960_CLOCK2, reg | div); |
| 670 | break; |
| 671 | case WM8960_TOCLKSEL: |
| 672 | reg = wm8960_read(codec, WM8960_ADDCTL1) & 0x1fd; |
| 673 | wm8960_write(codec, WM8960_ADDCTL1, reg | div); |
| 674 | break; |
| 675 | default: |
| 676 | return -EINVAL; |
| 677 | } |
| 678 | |
| 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | #define WM8960_RATES SNDRV_PCM_RATE_8000_48000 |
| 683 | |
| 684 | #define WM8960_FORMATS \ |
| 685 | (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ |
| 686 | SNDRV_PCM_FMTBIT_S24_LE) |
| 687 | |
| 688 | static struct snd_soc_dai_ops wm8960_dai_ops = { |
| 689 | .hw_params = wm8960_hw_params, |
| 690 | .digital_mute = wm8960_mute, |
| 691 | .set_fmt = wm8960_set_dai_fmt, |
| 692 | .set_clkdiv = wm8960_set_dai_clkdiv, |
| 693 | .set_pll = wm8960_set_dai_pll, |
| 694 | }; |
| 695 | |
| 696 | struct snd_soc_dai wm8960_dai = { |
| 697 | .name = "WM8960", |
| 698 | .playback = { |
| 699 | .stream_name = "Playback", |
| 700 | .channels_min = 1, |
| 701 | .channels_max = 2, |
| 702 | .rates = WM8960_RATES, |
| 703 | .formats = WM8960_FORMATS,}, |
| 704 | .capture = { |
| 705 | .stream_name = "Capture", |
| 706 | .channels_min = 1, |
| 707 | .channels_max = 2, |
| 708 | .rates = WM8960_RATES, |
| 709 | .formats = WM8960_FORMATS,}, |
| 710 | .ops = &wm8960_dai_ops, |
| 711 | .symmetric_rates = 1, |
| 712 | }; |
| 713 | EXPORT_SYMBOL_GPL(wm8960_dai); |
| 714 | |
| 715 | static int wm8960_suspend(struct platform_device *pdev, pm_message_t state) |
| 716 | { |
| 717 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 718 | struct snd_soc_codec *codec = socdev->card->codec; |
| 719 | |
| 720 | wm8960_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| 721 | return 0; |
| 722 | } |
| 723 | |
| 724 | static int wm8960_resume(struct platform_device *pdev) |
| 725 | { |
| 726 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 727 | struct snd_soc_codec *codec = socdev->card->codec; |
| 728 | int i; |
| 729 | u8 data[2]; |
| 730 | u16 *cache = codec->reg_cache; |
| 731 | |
| 732 | /* Sync reg_cache with the hardware */ |
| 733 | for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) { |
| 734 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| 735 | data[1] = cache[i] & 0x00ff; |
| 736 | codec->hw_write(codec->control_data, data, 2); |
| 737 | } |
| 738 | |
| 739 | wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 740 | wm8960_set_bias_level(codec, codec->suspend_bias_level); |
| 741 | return 0; |
| 742 | } |
| 743 | |
| 744 | static struct snd_soc_codec *wm8960_codec; |
| 745 | |
| 746 | static int wm8960_probe(struct platform_device *pdev) |
| 747 | { |
| 748 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 749 | struct snd_soc_codec *codec; |
| 750 | int ret = 0; |
| 751 | |
| 752 | if (wm8960_codec == NULL) { |
| 753 | dev_err(&pdev->dev, "Codec device not registered\n"); |
| 754 | return -ENODEV; |
| 755 | } |
| 756 | |
| 757 | socdev->card->codec = wm8960_codec; |
| 758 | codec = wm8960_codec; |
| 759 | |
| 760 | /* register pcms */ |
| 761 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
| 762 | if (ret < 0) { |
| 763 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); |
| 764 | goto pcm_err; |
| 765 | } |
| 766 | |
| 767 | snd_soc_add_controls(codec, wm8960_snd_controls, |
| 768 | ARRAY_SIZE(wm8960_snd_controls)); |
| 769 | wm8960_add_widgets(codec); |
| 770 | ret = snd_soc_init_card(socdev); |
| 771 | if (ret < 0) { |
| 772 | dev_err(codec->dev, "failed to register card: %d\n", ret); |
| 773 | goto card_err; |
| 774 | } |
| 775 | |
| 776 | return ret; |
| 777 | |
| 778 | card_err: |
| 779 | snd_soc_free_pcms(socdev); |
| 780 | snd_soc_dapm_free(socdev); |
| 781 | pcm_err: |
| 782 | return ret; |
| 783 | } |
| 784 | |
| 785 | /* power down chip */ |
| 786 | static int wm8960_remove(struct platform_device *pdev) |
| 787 | { |
| 788 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 789 | |
| 790 | snd_soc_free_pcms(socdev); |
| 791 | snd_soc_dapm_free(socdev); |
| 792 | |
| 793 | return 0; |
| 794 | } |
| 795 | |
| 796 | struct snd_soc_codec_device soc_codec_dev_wm8960 = { |
| 797 | .probe = wm8960_probe, |
| 798 | .remove = wm8960_remove, |
| 799 | .suspend = wm8960_suspend, |
| 800 | .resume = wm8960_resume, |
| 801 | }; |
| 802 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960); |
| 803 | |
| 804 | static int wm8960_register(struct wm8960_priv *wm8960) |
| 805 | { |
| 806 | struct wm8960_data *pdata = wm8960->codec.dev->platform_data; |
| 807 | struct snd_soc_codec *codec = &wm8960->codec; |
| 808 | int ret; |
| 809 | u16 reg; |
| 810 | |
| 811 | if (wm8960_codec) { |
| 812 | dev_err(codec->dev, "Another WM8960 is registered\n"); |
| 813 | return -EINVAL; |
| 814 | } |
| 815 | |
| 816 | if (!pdata) { |
| 817 | dev_warn(codec->dev, "No platform data supplied\n"); |
| 818 | } else { |
| 819 | if (pdata->dres > WM8960_DRES_MAX) { |
| 820 | dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres); |
| 821 | pdata->dres = 0; |
| 822 | } |
| 823 | } |
| 824 | |
| 825 | mutex_init(&codec->mutex); |
| 826 | INIT_LIST_HEAD(&codec->dapm_widgets); |
| 827 | INIT_LIST_HEAD(&codec->dapm_paths); |
| 828 | |
| 829 | codec->private_data = wm8960; |
| 830 | codec->name = "WM8960"; |
| 831 | codec->owner = THIS_MODULE; |
| 832 | codec->read = wm8960_read_reg_cache; |
| 833 | codec->write = wm8960_write; |
| 834 | codec->bias_level = SND_SOC_BIAS_OFF; |
| 835 | codec->set_bias_level = wm8960_set_bias_level; |
| 836 | codec->dai = &wm8960_dai; |
| 837 | codec->num_dai = 1; |
| 838 | codec->reg_cache_size = WM8960_CACHEREGNUM; |
| 839 | codec->reg_cache = &wm8960->reg_cache; |
| 840 | |
| 841 | memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg)); |
| 842 | |
| 843 | ret = wm8960_reset(codec); |
| 844 | if (ret < 0) { |
| 845 | dev_err(codec->dev, "Failed to issue reset\n"); |
| 846 | return ret; |
| 847 | } |
| 848 | |
| 849 | wm8960_dai.dev = codec->dev; |
| 850 | |
| 851 | wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| 852 | |
| 853 | /* Latch the update bits */ |
| 854 | reg = wm8960_read(codec, WM8960_LINVOL); |
| 855 | wm8960_write(codec, WM8960_LINVOL, reg | 0x100); |
| 856 | reg = wm8960_read(codec, WM8960_RINVOL); |
| 857 | wm8960_write(codec, WM8960_RINVOL, reg | 0x100); |
| 858 | reg = wm8960_read(codec, WM8960_LADC); |
| 859 | wm8960_write(codec, WM8960_LADC, reg | 0x100); |
| 860 | reg = wm8960_read(codec, WM8960_RADC); |
| 861 | wm8960_write(codec, WM8960_RADC, reg | 0x100); |
| 862 | reg = wm8960_read(codec, WM8960_LDAC); |
| 863 | wm8960_write(codec, WM8960_LDAC, reg | 0x100); |
| 864 | reg = wm8960_read(codec, WM8960_RDAC); |
| 865 | wm8960_write(codec, WM8960_RDAC, reg | 0x100); |
| 866 | reg = wm8960_read(codec, WM8960_LOUT1); |
| 867 | wm8960_write(codec, WM8960_LOUT1, reg | 0x100); |
| 868 | reg = wm8960_read(codec, WM8960_ROUT1); |
| 869 | wm8960_write(codec, WM8960_ROUT1, reg | 0x100); |
| 870 | reg = wm8960_read(codec, WM8960_LOUT2); |
| 871 | wm8960_write(codec, WM8960_LOUT2, reg | 0x100); |
| 872 | reg = wm8960_read(codec, WM8960_ROUT2); |
| 873 | wm8960_write(codec, WM8960_ROUT2, reg | 0x100); |
| 874 | |
| 875 | wm8960_codec = codec; |
| 876 | |
| 877 | ret = snd_soc_register_codec(codec); |
| 878 | if (ret != 0) { |
| 879 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); |
| 880 | return ret; |
| 881 | } |
| 882 | |
| 883 | ret = snd_soc_register_dai(&wm8960_dai); |
| 884 | if (ret != 0) { |
| 885 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); |
| 886 | snd_soc_unregister_codec(codec); |
| 887 | return ret; |
| 888 | } |
| 889 | |
| 890 | return 0; |
| 891 | } |
| 892 | |
| 893 | static void wm8960_unregister(struct wm8960_priv *wm8960) |
| 894 | { |
| 895 | wm8960_set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF); |
| 896 | snd_soc_unregister_dai(&wm8960_dai); |
| 897 | snd_soc_unregister_codec(&wm8960->codec); |
| 898 | kfree(wm8960); |
| 899 | wm8960_codec = NULL; |
| 900 | } |
| 901 | |
| 902 | static __devinit int wm8960_i2c_probe(struct i2c_client *i2c, |
| 903 | const struct i2c_device_id *id) |
| 904 | { |
| 905 | struct wm8960_priv *wm8960; |
| 906 | struct snd_soc_codec *codec; |
| 907 | |
| 908 | wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL); |
| 909 | if (wm8960 == NULL) |
| 910 | return -ENOMEM; |
| 911 | |
| 912 | codec = &wm8960->codec; |
| 913 | codec->hw_write = (hw_write_t)i2c_master_send; |
| 914 | |
| 915 | i2c_set_clientdata(i2c, wm8960); |
| 916 | codec->control_data = i2c; |
| 917 | |
| 918 | codec->dev = &i2c->dev; |
| 919 | |
| 920 | return wm8960_register(wm8960); |
| 921 | } |
| 922 | |
| 923 | static __devexit int wm8960_i2c_remove(struct i2c_client *client) |
| 924 | { |
| 925 | struct wm8960_priv *wm8960 = i2c_get_clientdata(client); |
| 926 | wm8960_unregister(wm8960); |
| 927 | return 0; |
| 928 | } |
| 929 | |
| 930 | static const struct i2c_device_id wm8960_i2c_id[] = { |
| 931 | { "wm8960", 0 }, |
| 932 | { } |
| 933 | }; |
| 934 | MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); |
| 935 | |
| 936 | static struct i2c_driver wm8960_i2c_driver = { |
| 937 | .driver = { |
| 938 | .name = "WM8960 I2C Codec", |
| 939 | .owner = THIS_MODULE, |
| 940 | }, |
| 941 | .probe = wm8960_i2c_probe, |
| 942 | .remove = __devexit_p(wm8960_i2c_remove), |
| 943 | .id_table = wm8960_i2c_id, |
| 944 | }; |
| 945 | |
| 946 | static int __init wm8960_modinit(void) |
| 947 | { |
| 948 | int ret; |
| 949 | |
| 950 | ret = i2c_add_driver(&wm8960_i2c_driver); |
| 951 | if (ret != 0) { |
| 952 | printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n", |
| 953 | ret); |
| 954 | } |
| 955 | |
| 956 | return ret; |
| 957 | } |
| 958 | module_init(wm8960_modinit); |
| 959 | |
| 960 | static void __exit wm8960_exit(void) |
| 961 | { |
| 962 | i2c_del_driver(&wm8960_i2c_driver); |
| 963 | } |
| 964 | module_exit(wm8960_exit); |
| 965 | |
| 966 | |
| 967 | MODULE_DESCRIPTION("ASoC WM8960 driver"); |
| 968 | MODULE_AUTHOR("Liam Girdwood"); |
| 969 | MODULE_LICENSE("GPL"); |