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 <linux/slab.h> 19 #include <sound/core.h> 20 #include <sound/pcm.h> 21 #include <sound/pcm_params.h> 22 #include <sound/soc.h> 23 #include <sound/soc-dapm.h> 24 #include <sound/initval.h> 25 #include <sound/tlv.h> 26 #include <sound/wm8960.h> 27 28 #include "wm8960.h" 29 30 #define AUDIO_NAME "wm8960" 31 32 struct snd_soc_codec_device soc_codec_dev_wm8960; 33 34 /* R25 - Power 1 */ 35 #define WM8960_VMID_MASK 0x180 36 #define WM8960_VREF 0x40 37 38 /* R26 - Power 2 */ 39 #define WM8960_PWR2_LOUT1 0x40 40 #define WM8960_PWR2_ROUT1 0x20 41 #define WM8960_PWR2_OUT3 0x02 42 43 /* R28 - Anti-pop 1 */ 44 #define WM8960_POBCTRL 0x80 45 #define WM8960_BUFDCOPEN 0x10 46 #define WM8960_BUFIOEN 0x08 47 #define WM8960_SOFT_ST 0x04 48 #define WM8960_HPSTBY 0x01 49 50 /* R29 - Anti-pop 2 */ 51 #define WM8960_DISOP 0x40 52 #define WM8960_DRES_MASK 0x30 53 54 /* 55 * wm8960 register cache 56 * We can't read the WM8960 register space when we are 57 * using 2 wire for device control, so we cache them instead. 58 */ 59 static const u16 wm8960_reg[WM8960_CACHEREGNUM] = { 60 0x0097, 0x0097, 0x0000, 0x0000, 61 0x0000, 0x0008, 0x0000, 0x000a, 62 0x01c0, 0x0000, 0x00ff, 0x00ff, 63 0x0000, 0x0000, 0x0000, 0x0000, 64 0x0000, 0x007b, 0x0100, 0x0032, 65 0x0000, 0x00c3, 0x00c3, 0x01c0, 66 0x0000, 0x0000, 0x0000, 0x0000, 67 0x0000, 0x0000, 0x0000, 0x0000, 68 0x0100, 0x0100, 0x0050, 0x0050, 69 0x0050, 0x0050, 0x0000, 0x0000, 70 0x0000, 0x0000, 0x0040, 0x0000, 71 0x0000, 0x0050, 0x0050, 0x0000, 72 0x0002, 0x0037, 0x004d, 0x0080, 73 0x0008, 0x0031, 0x0026, 0x00e9, 74 }; 75 76 struct wm8960_priv { 77 u16 reg_cache[WM8960_CACHEREGNUM]; 78 struct snd_soc_codec codec; 79 struct snd_soc_dapm_widget *lout1; 80 struct snd_soc_dapm_widget *rout1; 81 struct snd_soc_dapm_widget *out3; 82 }; 83 84 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0) 85 86 /* enumerated controls */ 87 static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 88 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted", 89 "Right Inverted", "Stereo Inversion"}; 90 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"}; 91 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"}; 92 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"}; 93 static const char *wm8960_alcmode[] = {"ALC", "Limiter"}; 94 95 static const struct soc_enum wm8960_enum[] = { 96 SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph), 97 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity), 98 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity), 99 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff), 100 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff), 101 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc), 102 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode), 103 }; 104 105 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0); 106 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1); 107 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0); 108 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); 109 110 static const struct snd_kcontrol_new wm8960_snd_controls[] = { 111 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL, 112 0, 63, 0, adc_tlv), 113 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL, 114 6, 1, 0), 115 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL, 116 7, 1, 0), 117 118 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC, 119 0, 255, 0, dac_tlv), 120 121 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1, 122 0, 127, 0, out_tlv), 123 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1, 124 7, 1, 0), 125 126 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2, 127 0, 127, 0, out_tlv), 128 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2, 129 7, 1, 0), 130 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0), 131 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0), 132 133 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0), 134 SOC_ENUM("ADC Polarity", wm8960_enum[1]), 135 SOC_ENUM("Playback De-emphasis", wm8960_enum[0]), 136 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0), 137 138 SOC_ENUM("DAC Polarity", wm8960_enum[2]), 139 140 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]), 141 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]), 142 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), 143 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0), 144 145 SOC_ENUM("ALC Function", wm8960_enum[5]), 146 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0), 147 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1), 148 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0), 149 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0), 150 SOC_ENUM("ALC Mode", wm8960_enum[6]), 151 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0), 152 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0), 153 154 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0), 155 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0), 156 157 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH, 158 0, 127, 0), 159 160 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume", 161 WM8960_BYPASS1, 4, 7, 1, bypass_tlv), 162 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume", 163 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv), 164 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume", 165 WM8960_BYPASS2, 4, 7, 1, bypass_tlv), 166 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume", 167 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv), 168 }; 169 170 static const struct snd_kcontrol_new wm8960_lin_boost[] = { 171 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0), 172 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0), 173 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0), 174 }; 175 176 static const struct snd_kcontrol_new wm8960_lin[] = { 177 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0), 178 }; 179 180 static const struct snd_kcontrol_new wm8960_rin_boost[] = { 181 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0), 182 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0), 183 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0), 184 }; 185 186 static const struct snd_kcontrol_new wm8960_rin[] = { 187 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0), 188 }; 189 190 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = { 191 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0), 192 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0), 193 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0), 194 }; 195 196 static const struct snd_kcontrol_new wm8960_routput_mixer[] = { 197 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0), 198 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0), 199 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0), 200 }; 201 202 static const struct snd_kcontrol_new wm8960_mono_out[] = { 203 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0), 204 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0), 205 }; 206 207 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = { 208 SND_SOC_DAPM_INPUT("LINPUT1"), 209 SND_SOC_DAPM_INPUT("RINPUT1"), 210 SND_SOC_DAPM_INPUT("LINPUT2"), 211 SND_SOC_DAPM_INPUT("RINPUT2"), 212 SND_SOC_DAPM_INPUT("LINPUT3"), 213 SND_SOC_DAPM_INPUT("RINPUT3"), 214 215 SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0), 216 217 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0, 218 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)), 219 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0, 220 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)), 221 222 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, 223 wm8960_lin, ARRAY_SIZE(wm8960_lin)), 224 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, 225 wm8960_rin, ARRAY_SIZE(wm8960_rin)), 226 227 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0), 228 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0), 229 230 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), 231 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), 232 233 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0, 234 &wm8960_loutput_mixer[0], 235 ARRAY_SIZE(wm8960_loutput_mixer)), 236 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0, 237 &wm8960_routput_mixer[0], 238 ARRAY_SIZE(wm8960_routput_mixer)), 239 240 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0), 241 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0), 242 243 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0), 244 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0), 245 246 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0), 247 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0), 248 249 SND_SOC_DAPM_OUTPUT("SPK_LP"), 250 SND_SOC_DAPM_OUTPUT("SPK_LN"), 251 SND_SOC_DAPM_OUTPUT("HP_L"), 252 SND_SOC_DAPM_OUTPUT("HP_R"), 253 SND_SOC_DAPM_OUTPUT("SPK_RP"), 254 SND_SOC_DAPM_OUTPUT("SPK_RN"), 255 SND_SOC_DAPM_OUTPUT("OUT3"), 256 }; 257 258 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = { 259 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0, 260 &wm8960_mono_out[0], 261 ARRAY_SIZE(wm8960_mono_out)), 262 }; 263 264 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */ 265 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = { 266 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0), 267 }; 268 269 static const struct snd_soc_dapm_route audio_paths[] = { 270 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" }, 271 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" }, 272 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" }, 273 274 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", }, 275 { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */ 276 { "Left Input Mixer", NULL, "LINPUT2" }, 277 { "Left Input Mixer", NULL, "LINPUT3" }, 278 279 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" }, 280 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" }, 281 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" }, 282 283 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", }, 284 { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */ 285 { "Right Input Mixer", NULL, "RINPUT2" }, 286 { "Right Input Mixer", NULL, "LINPUT3" }, 287 288 { "Left ADC", NULL, "Left Input Mixer" }, 289 { "Right ADC", NULL, "Right Input Mixer" }, 290 291 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" }, 292 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} , 293 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" }, 294 295 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" }, 296 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } , 297 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" }, 298 299 { "LOUT1 PGA", NULL, "Left Output Mixer" }, 300 { "ROUT1 PGA", NULL, "Right Output Mixer" }, 301 302 { "HP_L", NULL, "LOUT1 PGA" }, 303 { "HP_R", NULL, "ROUT1 PGA" }, 304 305 { "Left Speaker PGA", NULL, "Left Output Mixer" }, 306 { "Right Speaker PGA", NULL, "Right Output Mixer" }, 307 308 { "Left Speaker Output", NULL, "Left Speaker PGA" }, 309 { "Right Speaker Output", NULL, "Right Speaker PGA" }, 310 311 { "SPK_LN", NULL, "Left Speaker Output" }, 312 { "SPK_LP", NULL, "Left Speaker Output" }, 313 { "SPK_RN", NULL, "Right Speaker Output" }, 314 { "SPK_RP", NULL, "Right Speaker Output" }, 315 }; 316 317 static const struct snd_soc_dapm_route audio_paths_out3[] = { 318 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" }, 319 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" }, 320 321 { "OUT3", NULL, "Mono Output Mixer", } 322 }; 323 324 static const struct snd_soc_dapm_route audio_paths_capless[] = { 325 { "HP_L", NULL, "OUT3 VMID" }, 326 { "HP_R", NULL, "OUT3 VMID" }, 327 328 { "OUT3 VMID", NULL, "Left Output Mixer" }, 329 { "OUT3 VMID", NULL, "Right Output Mixer" }, 330 }; 331 332 static int wm8960_add_widgets(struct snd_soc_codec *codec) 333 { 334 struct wm8960_data *pdata = codec->dev->platform_data; 335 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec); 336 struct snd_soc_dapm_widget *w; 337 338 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets, 339 ARRAY_SIZE(wm8960_dapm_widgets)); 340 341 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); 342 343 /* In capless mode OUT3 is used to provide VMID for the 344 * headphone outputs, otherwise it is used as a mono mixer. 345 */ 346 if (pdata && pdata->capless) { 347 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_capless, 348 ARRAY_SIZE(wm8960_dapm_widgets_capless)); 349 350 snd_soc_dapm_add_routes(codec, audio_paths_capless, 351 ARRAY_SIZE(audio_paths_capless)); 352 } else { 353 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_out3, 354 ARRAY_SIZE(wm8960_dapm_widgets_out3)); 355 356 snd_soc_dapm_add_routes(codec, audio_paths_out3, 357 ARRAY_SIZE(audio_paths_out3)); 358 } 359 360 /* We need to power up the headphone output stage out of 361 * sequence for capless mode. To save scanning the widget 362 * list each time to find the desired power state do so now 363 * and save the result. 364 */ 365 list_for_each_entry(w, &codec->dapm_widgets, list) { 366 if (strcmp(w->name, "LOUT1 PGA") == 0) 367 wm8960->lout1 = w; 368 if (strcmp(w->name, "ROUT1 PGA") == 0) 369 wm8960->rout1 = w; 370 if (strcmp(w->name, "OUT3 VMID") == 0) 371 wm8960->out3 = w; 372 } 373 374 return 0; 375 } 376 377 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, 378 unsigned int fmt) 379 { 380 struct snd_soc_codec *codec = codec_dai->codec; 381 u16 iface = 0; 382 383 /* set master/slave audio interface */ 384 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 385 case SND_SOC_DAIFMT_CBM_CFM: 386 iface |= 0x0040; 387 break; 388 case SND_SOC_DAIFMT_CBS_CFS: 389 break; 390 default: 391 return -EINVAL; 392 } 393 394 /* interface format */ 395 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 396 case SND_SOC_DAIFMT_I2S: 397 iface |= 0x0002; 398 break; 399 case SND_SOC_DAIFMT_RIGHT_J: 400 break; 401 case SND_SOC_DAIFMT_LEFT_J: 402 iface |= 0x0001; 403 break; 404 case SND_SOC_DAIFMT_DSP_A: 405 iface |= 0x0003; 406 break; 407 case SND_SOC_DAIFMT_DSP_B: 408 iface |= 0x0013; 409 break; 410 default: 411 return -EINVAL; 412 } 413 414 /* clock inversion */ 415 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 416 case SND_SOC_DAIFMT_NB_NF: 417 break; 418 case SND_SOC_DAIFMT_IB_IF: 419 iface |= 0x0090; 420 break; 421 case SND_SOC_DAIFMT_IB_NF: 422 iface |= 0x0080; 423 break; 424 case SND_SOC_DAIFMT_NB_IF: 425 iface |= 0x0010; 426 break; 427 default: 428 return -EINVAL; 429 } 430 431 /* set iface */ 432 snd_soc_write(codec, WM8960_IFACE1, iface); 433 return 0; 434 } 435 436 static int wm8960_hw_params(struct snd_pcm_substream *substream, 437 struct snd_pcm_hw_params *params, 438 struct snd_soc_dai *dai) 439 { 440 struct snd_soc_pcm_runtime *rtd = substream->private_data; 441 struct snd_soc_device *socdev = rtd->socdev; 442 struct snd_soc_codec *codec = socdev->card->codec; 443 u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3; 444 445 /* bit size */ 446 switch (params_format(params)) { 447 case SNDRV_PCM_FORMAT_S16_LE: 448 break; 449 case SNDRV_PCM_FORMAT_S20_3LE: 450 iface |= 0x0004; 451 break; 452 case SNDRV_PCM_FORMAT_S24_LE: 453 iface |= 0x0008; 454 break; 455 } 456 457 /* set iface */ 458 snd_soc_write(codec, WM8960_IFACE1, iface); 459 return 0; 460 } 461 462 static int wm8960_mute(struct snd_soc_dai *dai, int mute) 463 { 464 struct snd_soc_codec *codec = dai->codec; 465 u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7; 466 467 if (mute) 468 snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8); 469 else 470 snd_soc_write(codec, WM8960_DACCTL1, mute_reg); 471 return 0; 472 } 473 474 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec, 475 enum snd_soc_bias_level level) 476 { 477 u16 reg; 478 479 switch (level) { 480 case SND_SOC_BIAS_ON: 481 break; 482 483 case SND_SOC_BIAS_PREPARE: 484 /* Set VMID to 2x50k */ 485 reg = snd_soc_read(codec, WM8960_POWER1); 486 reg &= ~0x180; 487 reg |= 0x80; 488 snd_soc_write(codec, WM8960_POWER1, reg); 489 break; 490 491 case SND_SOC_BIAS_STANDBY: 492 if (codec->bias_level == SND_SOC_BIAS_OFF) { 493 /* Enable anti-pop features */ 494 snd_soc_write(codec, WM8960_APOP1, 495 WM8960_POBCTRL | WM8960_SOFT_ST | 496 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 497 498 /* Enable & ramp VMID at 2x50k */ 499 reg = snd_soc_read(codec, WM8960_POWER1); 500 reg |= 0x80; 501 snd_soc_write(codec, WM8960_POWER1, reg); 502 msleep(100); 503 504 /* Enable VREF */ 505 snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF); 506 507 /* Disable anti-pop features */ 508 snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN); 509 } 510 511 /* Set VMID to 2x250k */ 512 reg = snd_soc_read(codec, WM8960_POWER1); 513 reg &= ~0x180; 514 reg |= 0x100; 515 snd_soc_write(codec, WM8960_POWER1, reg); 516 break; 517 518 case SND_SOC_BIAS_OFF: 519 /* Enable anti-pop features */ 520 snd_soc_write(codec, WM8960_APOP1, 521 WM8960_POBCTRL | WM8960_SOFT_ST | 522 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 523 524 /* Disable VMID and VREF, let them discharge */ 525 snd_soc_write(codec, WM8960_POWER1, 0); 526 msleep(600); 527 break; 528 } 529 530 codec->bias_level = level; 531 532 return 0; 533 } 534 535 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec, 536 enum snd_soc_bias_level level) 537 { 538 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec); 539 int reg; 540 541 switch (level) { 542 case SND_SOC_BIAS_ON: 543 break; 544 545 case SND_SOC_BIAS_PREPARE: 546 switch (codec->bias_level) { 547 case SND_SOC_BIAS_STANDBY: 548 /* Enable anti pop mode */ 549 snd_soc_update_bits(codec, WM8960_APOP1, 550 WM8960_POBCTRL | WM8960_SOFT_ST | 551 WM8960_BUFDCOPEN, 552 WM8960_POBCTRL | WM8960_SOFT_ST | 553 WM8960_BUFDCOPEN); 554 555 /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */ 556 reg = 0; 557 if (wm8960->lout1 && wm8960->lout1->power) 558 reg |= WM8960_PWR2_LOUT1; 559 if (wm8960->rout1 && wm8960->rout1->power) 560 reg |= WM8960_PWR2_ROUT1; 561 if (wm8960->out3 && wm8960->out3->power) 562 reg |= WM8960_PWR2_OUT3; 563 snd_soc_update_bits(codec, WM8960_POWER2, 564 WM8960_PWR2_LOUT1 | 565 WM8960_PWR2_ROUT1 | 566 WM8960_PWR2_OUT3, reg); 567 568 /* Enable VMID at 2*50k */ 569 snd_soc_update_bits(codec, WM8960_POWER1, 570 WM8960_VMID_MASK, 0x80); 571 572 /* Ramp */ 573 msleep(100); 574 575 /* Enable VREF */ 576 snd_soc_update_bits(codec, WM8960_POWER1, 577 WM8960_VREF, WM8960_VREF); 578 579 msleep(100); 580 break; 581 582 case SND_SOC_BIAS_ON: 583 /* Enable anti-pop mode */ 584 snd_soc_update_bits(codec, WM8960_APOP1, 585 WM8960_POBCTRL | WM8960_SOFT_ST | 586 WM8960_BUFDCOPEN, 587 WM8960_POBCTRL | WM8960_SOFT_ST | 588 WM8960_BUFDCOPEN); 589 590 /* Disable VMID and VREF */ 591 snd_soc_update_bits(codec, WM8960_POWER1, 592 WM8960_VREF | WM8960_VMID_MASK, 0); 593 break; 594 595 default: 596 break; 597 } 598 break; 599 600 case SND_SOC_BIAS_STANDBY: 601 switch (codec->bias_level) { 602 case SND_SOC_BIAS_PREPARE: 603 /* Disable HP discharge */ 604 snd_soc_update_bits(codec, WM8960_APOP2, 605 WM8960_DISOP | WM8960_DRES_MASK, 606 0); 607 608 /* Disable anti-pop features */ 609 snd_soc_update_bits(codec, WM8960_APOP1, 610 WM8960_POBCTRL | WM8960_SOFT_ST | 611 WM8960_BUFDCOPEN, 612 WM8960_POBCTRL | WM8960_SOFT_ST | 613 WM8960_BUFDCOPEN); 614 break; 615 616 default: 617 break; 618 } 619 break; 620 621 case SND_SOC_BIAS_OFF: 622 break; 623 } 624 625 codec->bias_level = level; 626 627 return 0; 628 } 629 630 /* PLL divisors */ 631 struct _pll_div { 632 u32 pre_div:1; 633 u32 n:4; 634 u32 k:24; 635 }; 636 637 /* The size in bits of the pll divide multiplied by 10 638 * to allow rounding later */ 639 #define FIXED_PLL_SIZE ((1 << 24) * 10) 640 641 static int pll_factors(unsigned int source, unsigned int target, 642 struct _pll_div *pll_div) 643 { 644 unsigned long long Kpart; 645 unsigned int K, Ndiv, Nmod; 646 647 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target); 648 649 /* Scale up target to PLL operating frequency */ 650 target *= 4; 651 652 Ndiv = target / source; 653 if (Ndiv < 6) { 654 source >>= 1; 655 pll_div->pre_div = 1; 656 Ndiv = target / source; 657 } else 658 pll_div->pre_div = 0; 659 660 if ((Ndiv < 6) || (Ndiv > 12)) { 661 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv); 662 return -EINVAL; 663 } 664 665 pll_div->n = Ndiv; 666 Nmod = target % source; 667 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 668 669 do_div(Kpart, source); 670 671 K = Kpart & 0xFFFFFFFF; 672 673 /* Check if we need to round */ 674 if ((K % 10) >= 5) 675 K += 5; 676 677 /* Move down to proper range now rounding is done */ 678 K /= 10; 679 680 pll_div->k = K; 681 682 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n", 683 pll_div->n, pll_div->k, pll_div->pre_div); 684 685 return 0; 686 } 687 688 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 689 int source, unsigned int freq_in, unsigned int freq_out) 690 { 691 struct snd_soc_codec *codec = codec_dai->codec; 692 u16 reg; 693 static struct _pll_div pll_div; 694 int ret; 695 696 if (freq_in && freq_out) { 697 ret = pll_factors(freq_in, freq_out, &pll_div); 698 if (ret != 0) 699 return ret; 700 } 701 702 /* Disable the PLL: even if we are changing the frequency the 703 * PLL needs to be disabled while we do so. */ 704 snd_soc_write(codec, WM8960_CLOCK1, 705 snd_soc_read(codec, WM8960_CLOCK1) & ~1); 706 snd_soc_write(codec, WM8960_POWER2, 707 snd_soc_read(codec, WM8960_POWER2) & ~1); 708 709 if (!freq_in || !freq_out) 710 return 0; 711 712 reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f; 713 reg |= pll_div.pre_div << 4; 714 reg |= pll_div.n; 715 716 if (pll_div.k) { 717 reg |= 0x20; 718 719 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f); 720 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff); 721 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff); 722 } 723 snd_soc_write(codec, WM8960_PLL1, reg); 724 725 /* Turn it on */ 726 snd_soc_write(codec, WM8960_POWER2, 727 snd_soc_read(codec, WM8960_POWER2) | 1); 728 msleep(250); 729 snd_soc_write(codec, WM8960_CLOCK1, 730 snd_soc_read(codec, WM8960_CLOCK1) | 1); 731 732 return 0; 733 } 734 735 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 736 int div_id, int div) 737 { 738 struct snd_soc_codec *codec = codec_dai->codec; 739 u16 reg; 740 741 switch (div_id) { 742 case WM8960_SYSCLKDIV: 743 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9; 744 snd_soc_write(codec, WM8960_CLOCK1, reg | div); 745 break; 746 case WM8960_DACDIV: 747 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7; 748 snd_soc_write(codec, WM8960_CLOCK1, reg | div); 749 break; 750 case WM8960_OPCLKDIV: 751 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f; 752 snd_soc_write(codec, WM8960_PLL1, reg | div); 753 break; 754 case WM8960_DCLKDIV: 755 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f; 756 snd_soc_write(codec, WM8960_CLOCK2, reg | div); 757 break; 758 case WM8960_TOCLKSEL: 759 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd; 760 snd_soc_write(codec, WM8960_ADDCTL1, reg | div); 761 break; 762 default: 763 return -EINVAL; 764 } 765 766 return 0; 767 } 768 769 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000 770 771 #define WM8960_FORMATS \ 772 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 773 SNDRV_PCM_FMTBIT_S24_LE) 774 775 static struct snd_soc_dai_ops wm8960_dai_ops = { 776 .hw_params = wm8960_hw_params, 777 .digital_mute = wm8960_mute, 778 .set_fmt = wm8960_set_dai_fmt, 779 .set_clkdiv = wm8960_set_dai_clkdiv, 780 .set_pll = wm8960_set_dai_pll, 781 }; 782 783 struct snd_soc_dai wm8960_dai = { 784 .name = "WM8960", 785 .playback = { 786 .stream_name = "Playback", 787 .channels_min = 1, 788 .channels_max = 2, 789 .rates = WM8960_RATES, 790 .formats = WM8960_FORMATS,}, 791 .capture = { 792 .stream_name = "Capture", 793 .channels_min = 1, 794 .channels_max = 2, 795 .rates = WM8960_RATES, 796 .formats = WM8960_FORMATS,}, 797 .ops = &wm8960_dai_ops, 798 .symmetric_rates = 1, 799 }; 800 EXPORT_SYMBOL_GPL(wm8960_dai); 801 802 static int wm8960_suspend(struct platform_device *pdev, pm_message_t state) 803 { 804 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 805 struct snd_soc_codec *codec = socdev->card->codec; 806 807 codec->set_bias_level(codec, SND_SOC_BIAS_OFF); 808 return 0; 809 } 810 811 static int wm8960_resume(struct platform_device *pdev) 812 { 813 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 814 struct snd_soc_codec *codec = socdev->card->codec; 815 int i; 816 u8 data[2]; 817 u16 *cache = codec->reg_cache; 818 819 /* Sync reg_cache with the hardware */ 820 for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) { 821 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 822 data[1] = cache[i] & 0x00ff; 823 codec->hw_write(codec->control_data, data, 2); 824 } 825 826 codec->set_bias_level(codec, SND_SOC_BIAS_STANDBY); 827 828 return 0; 829 } 830 831 static struct snd_soc_codec *wm8960_codec; 832 833 static int wm8960_probe(struct platform_device *pdev) 834 { 835 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 836 struct snd_soc_codec *codec; 837 int ret = 0; 838 839 if (wm8960_codec == NULL) { 840 dev_err(&pdev->dev, "Codec device not registered\n"); 841 return -ENODEV; 842 } 843 844 socdev->card->codec = wm8960_codec; 845 codec = wm8960_codec; 846 847 /* register pcms */ 848 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 849 if (ret < 0) { 850 dev_err(codec->dev, "failed to create pcms: %d\n", ret); 851 goto pcm_err; 852 } 853 854 snd_soc_add_controls(codec, wm8960_snd_controls, 855 ARRAY_SIZE(wm8960_snd_controls)); 856 wm8960_add_widgets(codec); 857 858 return ret; 859 860 pcm_err: 861 return ret; 862 } 863 864 /* power down chip */ 865 static int wm8960_remove(struct platform_device *pdev) 866 { 867 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 868 869 snd_soc_free_pcms(socdev); 870 snd_soc_dapm_free(socdev); 871 872 return 0; 873 } 874 875 struct snd_soc_codec_device soc_codec_dev_wm8960 = { 876 .probe = wm8960_probe, 877 .remove = wm8960_remove, 878 .suspend = wm8960_suspend, 879 .resume = wm8960_resume, 880 }; 881 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960); 882 883 static int wm8960_register(struct wm8960_priv *wm8960, 884 enum snd_soc_control_type control) 885 { 886 struct wm8960_data *pdata = wm8960->codec.dev->platform_data; 887 struct snd_soc_codec *codec = &wm8960->codec; 888 int ret; 889 u16 reg; 890 891 if (wm8960_codec) { 892 dev_err(codec->dev, "Another WM8960 is registered\n"); 893 ret = -EINVAL; 894 goto err; 895 } 896 897 codec->set_bias_level = wm8960_set_bias_level_out3; 898 899 if (!pdata) { 900 dev_warn(codec->dev, "No platform data supplied\n"); 901 } else { 902 if (pdata->dres > WM8960_DRES_MAX) { 903 dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres); 904 pdata->dres = 0; 905 } 906 907 if (pdata->capless) 908 codec->set_bias_level = wm8960_set_bias_level_capless; 909 } 910 911 mutex_init(&codec->mutex); 912 INIT_LIST_HEAD(&codec->dapm_widgets); 913 INIT_LIST_HEAD(&codec->dapm_paths); 914 915 snd_soc_codec_set_drvdata(codec, wm8960); 916 codec->name = "WM8960"; 917 codec->owner = THIS_MODULE; 918 codec->bias_level = SND_SOC_BIAS_OFF; 919 codec->dai = &wm8960_dai; 920 codec->num_dai = 1; 921 codec->reg_cache_size = WM8960_CACHEREGNUM; 922 codec->reg_cache = &wm8960->reg_cache; 923 924 memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg)); 925 926 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); 927 if (ret < 0) { 928 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 929 goto err; 930 } 931 932 ret = wm8960_reset(codec); 933 if (ret < 0) { 934 dev_err(codec->dev, "Failed to issue reset\n"); 935 goto err; 936 } 937 938 wm8960_dai.dev = codec->dev; 939 940 codec->set_bias_level(codec, SND_SOC_BIAS_STANDBY); 941 942 /* Latch the update bits */ 943 reg = snd_soc_read(codec, WM8960_LINVOL); 944 snd_soc_write(codec, WM8960_LINVOL, reg | 0x100); 945 reg = snd_soc_read(codec, WM8960_RINVOL); 946 snd_soc_write(codec, WM8960_RINVOL, reg | 0x100); 947 reg = snd_soc_read(codec, WM8960_LADC); 948 snd_soc_write(codec, WM8960_LADC, reg | 0x100); 949 reg = snd_soc_read(codec, WM8960_RADC); 950 snd_soc_write(codec, WM8960_RADC, reg | 0x100); 951 reg = snd_soc_read(codec, WM8960_LDAC); 952 snd_soc_write(codec, WM8960_LDAC, reg | 0x100); 953 reg = snd_soc_read(codec, WM8960_RDAC); 954 snd_soc_write(codec, WM8960_RDAC, reg | 0x100); 955 reg = snd_soc_read(codec, WM8960_LOUT1); 956 snd_soc_write(codec, WM8960_LOUT1, reg | 0x100); 957 reg = snd_soc_read(codec, WM8960_ROUT1); 958 snd_soc_write(codec, WM8960_ROUT1, reg | 0x100); 959 reg = snd_soc_read(codec, WM8960_LOUT2); 960 snd_soc_write(codec, WM8960_LOUT2, reg | 0x100); 961 reg = snd_soc_read(codec, WM8960_ROUT2); 962 snd_soc_write(codec, WM8960_ROUT2, reg | 0x100); 963 964 wm8960_codec = codec; 965 966 ret = snd_soc_register_codec(codec); 967 if (ret != 0) { 968 dev_err(codec->dev, "Failed to register codec: %d\n", ret); 969 goto err; 970 } 971 972 ret = snd_soc_register_dai(&wm8960_dai); 973 if (ret != 0) { 974 dev_err(codec->dev, "Failed to register DAI: %d\n", ret); 975 goto err_codec; 976 } 977 978 return 0; 979 980 err_codec: 981 snd_soc_unregister_codec(codec); 982 err: 983 kfree(wm8960); 984 return ret; 985 } 986 987 static void wm8960_unregister(struct wm8960_priv *wm8960) 988 { 989 wm8960->codec.set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF); 990 snd_soc_unregister_dai(&wm8960_dai); 991 snd_soc_unregister_codec(&wm8960->codec); 992 kfree(wm8960); 993 wm8960_codec = NULL; 994 } 995 996 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c, 997 const struct i2c_device_id *id) 998 { 999 struct wm8960_priv *wm8960; 1000 struct snd_soc_codec *codec; 1001 1002 wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL); 1003 if (wm8960 == NULL) 1004 return -ENOMEM; 1005 1006 codec = &wm8960->codec; 1007 1008 i2c_set_clientdata(i2c, wm8960); 1009 codec->control_data = i2c; 1010 1011 codec->dev = &i2c->dev; 1012 1013 return wm8960_register(wm8960, SND_SOC_I2C); 1014 } 1015 1016 static __devexit int wm8960_i2c_remove(struct i2c_client *client) 1017 { 1018 struct wm8960_priv *wm8960 = i2c_get_clientdata(client); 1019 wm8960_unregister(wm8960); 1020 return 0; 1021 } 1022 1023 static const struct i2c_device_id wm8960_i2c_id[] = { 1024 { "wm8960", 0 }, 1025 { } 1026 }; 1027 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); 1028 1029 static struct i2c_driver wm8960_i2c_driver = { 1030 .driver = { 1031 .name = "wm8960", 1032 .owner = THIS_MODULE, 1033 }, 1034 .probe = wm8960_i2c_probe, 1035 .remove = __devexit_p(wm8960_i2c_remove), 1036 .id_table = wm8960_i2c_id, 1037 }; 1038 1039 static int __init wm8960_modinit(void) 1040 { 1041 int ret; 1042 1043 ret = i2c_add_driver(&wm8960_i2c_driver); 1044 if (ret != 0) { 1045 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n", 1046 ret); 1047 } 1048 1049 return ret; 1050 } 1051 module_init(wm8960_modinit); 1052 1053 static void __exit wm8960_exit(void) 1054 { 1055 i2c_del_driver(&wm8960_i2c_driver); 1056 } 1057 module_exit(wm8960_exit); 1058 1059 1060 MODULE_DESCRIPTION("ASoC WM8960 driver"); 1061 MODULE_AUTHOR("Liam Girdwood"); 1062 MODULE_LICENSE("GPL"); 1063