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 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0) 73 74 /* enumerated controls */ 75 static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; 76 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted", 77 "Right Inverted", "Stereo Inversion"}; 78 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"}; 79 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"}; 80 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"}; 81 static const char *wm8960_alcmode[] = {"ALC", "Limiter"}; 82 83 static const struct soc_enum wm8960_enum[] = { 84 SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph), 85 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity), 86 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity), 87 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff), 88 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff), 89 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc), 90 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode), 91 }; 92 93 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0); 94 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1); 95 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0); 96 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); 97 98 static const struct snd_kcontrol_new wm8960_snd_controls[] = { 99 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL, 100 0, 63, 0, adc_tlv), 101 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL, 102 6, 1, 0), 103 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL, 104 7, 1, 0), 105 106 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC, 107 0, 255, 0, dac_tlv), 108 109 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1, 110 0, 127, 0, out_tlv), 111 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1, 112 7, 1, 0), 113 114 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2, 115 0, 127, 0, out_tlv), 116 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2, 117 7, 1, 0), 118 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0), 119 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0), 120 121 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0), 122 SOC_ENUM("ADC Polarity", wm8960_enum[1]), 123 SOC_ENUM("Playback De-emphasis", wm8960_enum[0]), 124 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0), 125 126 SOC_ENUM("DAC Polarity", wm8960_enum[2]), 127 128 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]), 129 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]), 130 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0), 131 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0), 132 133 SOC_ENUM("ALC Function", wm8960_enum[5]), 134 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0), 135 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1), 136 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0), 137 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0), 138 SOC_ENUM("ALC Mode", wm8960_enum[6]), 139 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0), 140 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0), 141 142 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0), 143 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0), 144 145 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH, 146 0, 127, 0), 147 148 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume", 149 WM8960_BYPASS1, 4, 7, 1, bypass_tlv), 150 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume", 151 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv), 152 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume", 153 WM8960_BYPASS2, 4, 7, 1, bypass_tlv), 154 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume", 155 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv), 156 }; 157 158 static const struct snd_kcontrol_new wm8960_lin_boost[] = { 159 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0), 160 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0), 161 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0), 162 }; 163 164 static const struct snd_kcontrol_new wm8960_lin[] = { 165 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0), 166 }; 167 168 static const struct snd_kcontrol_new wm8960_rin_boost[] = { 169 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0), 170 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0), 171 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0), 172 }; 173 174 static const struct snd_kcontrol_new wm8960_rin[] = { 175 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0), 176 }; 177 178 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = { 179 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0), 180 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0), 181 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0), 182 }; 183 184 static const struct snd_kcontrol_new wm8960_routput_mixer[] = { 185 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0), 186 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0), 187 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0), 188 }; 189 190 static const struct snd_kcontrol_new wm8960_mono_out[] = { 191 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0), 192 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0), 193 }; 194 195 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = { 196 SND_SOC_DAPM_INPUT("LINPUT1"), 197 SND_SOC_DAPM_INPUT("RINPUT1"), 198 SND_SOC_DAPM_INPUT("LINPUT2"), 199 SND_SOC_DAPM_INPUT("RINPUT2"), 200 SND_SOC_DAPM_INPUT("LINPUT3"), 201 SND_SOC_DAPM_INPUT("RINPUT3"), 202 203 SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0), 204 205 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0, 206 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)), 207 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0, 208 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)), 209 210 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, 211 wm8960_lin, ARRAY_SIZE(wm8960_lin)), 212 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, 213 wm8960_rin, ARRAY_SIZE(wm8960_rin)), 214 215 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0), 216 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0), 217 218 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), 219 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), 220 221 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0, 222 &wm8960_loutput_mixer[0], 223 ARRAY_SIZE(wm8960_loutput_mixer)), 224 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0, 225 &wm8960_routput_mixer[0], 226 ARRAY_SIZE(wm8960_routput_mixer)), 227 228 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0, 229 &wm8960_mono_out[0], 230 ARRAY_SIZE(wm8960_mono_out)), 231 232 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0), 233 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0), 234 235 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0), 236 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0), 237 238 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0), 239 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0), 240 241 SND_SOC_DAPM_OUTPUT("SPK_LP"), 242 SND_SOC_DAPM_OUTPUT("SPK_LN"), 243 SND_SOC_DAPM_OUTPUT("HP_L"), 244 SND_SOC_DAPM_OUTPUT("HP_R"), 245 SND_SOC_DAPM_OUTPUT("SPK_RP"), 246 SND_SOC_DAPM_OUTPUT("SPK_RN"), 247 SND_SOC_DAPM_OUTPUT("OUT3"), 248 }; 249 250 static const struct snd_soc_dapm_route audio_paths[] = { 251 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" }, 252 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" }, 253 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" }, 254 255 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", }, 256 { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */ 257 { "Left Input Mixer", NULL, "LINPUT2" }, 258 { "Left Input Mixer", NULL, "LINPUT3" }, 259 260 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" }, 261 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" }, 262 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" }, 263 264 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", }, 265 { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */ 266 { "Right Input Mixer", NULL, "RINPUT2" }, 267 { "Right Input Mixer", NULL, "LINPUT3" }, 268 269 { "Left ADC", NULL, "Left Input Mixer" }, 270 { "Right ADC", NULL, "Right Input Mixer" }, 271 272 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" }, 273 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} , 274 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" }, 275 276 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" }, 277 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } , 278 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" }, 279 280 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" }, 281 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" }, 282 283 { "LOUT1 PGA", NULL, "Left Output Mixer" }, 284 { "ROUT1 PGA", NULL, "Right Output Mixer" }, 285 286 { "HP_L", NULL, "LOUT1 PGA" }, 287 { "HP_R", NULL, "ROUT1 PGA" }, 288 289 { "Left Speaker PGA", NULL, "Left Output Mixer" }, 290 { "Right Speaker PGA", NULL, "Right Output Mixer" }, 291 292 { "Left Speaker Output", NULL, "Left Speaker PGA" }, 293 { "Right Speaker Output", NULL, "Right Speaker PGA" }, 294 295 { "SPK_LN", NULL, "Left Speaker Output" }, 296 { "SPK_LP", NULL, "Left Speaker Output" }, 297 { "SPK_RN", NULL, "Right Speaker Output" }, 298 { "SPK_RP", NULL, "Right Speaker Output" }, 299 300 { "OUT3", NULL, "Mono Output Mixer", } 301 }; 302 303 static int wm8960_add_widgets(struct snd_soc_codec *codec) 304 { 305 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets, 306 ARRAY_SIZE(wm8960_dapm_widgets)); 307 308 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); 309 310 return 0; 311 } 312 313 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, 314 unsigned int fmt) 315 { 316 struct snd_soc_codec *codec = codec_dai->codec; 317 u16 iface = 0; 318 319 /* set master/slave audio interface */ 320 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 321 case SND_SOC_DAIFMT_CBM_CFM: 322 iface |= 0x0040; 323 break; 324 case SND_SOC_DAIFMT_CBS_CFS: 325 break; 326 default: 327 return -EINVAL; 328 } 329 330 /* interface format */ 331 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 332 case SND_SOC_DAIFMT_I2S: 333 iface |= 0x0002; 334 break; 335 case SND_SOC_DAIFMT_RIGHT_J: 336 break; 337 case SND_SOC_DAIFMT_LEFT_J: 338 iface |= 0x0001; 339 break; 340 case SND_SOC_DAIFMT_DSP_A: 341 iface |= 0x0003; 342 break; 343 case SND_SOC_DAIFMT_DSP_B: 344 iface |= 0x0013; 345 break; 346 default: 347 return -EINVAL; 348 } 349 350 /* clock inversion */ 351 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 352 case SND_SOC_DAIFMT_NB_NF: 353 break; 354 case SND_SOC_DAIFMT_IB_IF: 355 iface |= 0x0090; 356 break; 357 case SND_SOC_DAIFMT_IB_NF: 358 iface |= 0x0080; 359 break; 360 case SND_SOC_DAIFMT_NB_IF: 361 iface |= 0x0010; 362 break; 363 default: 364 return -EINVAL; 365 } 366 367 /* set iface */ 368 snd_soc_write(codec, WM8960_IFACE1, iface); 369 return 0; 370 } 371 372 static int wm8960_hw_params(struct snd_pcm_substream *substream, 373 struct snd_pcm_hw_params *params, 374 struct snd_soc_dai *dai) 375 { 376 struct snd_soc_pcm_runtime *rtd = substream->private_data; 377 struct snd_soc_device *socdev = rtd->socdev; 378 struct snd_soc_codec *codec = socdev->card->codec; 379 u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3; 380 381 /* bit size */ 382 switch (params_format(params)) { 383 case SNDRV_PCM_FORMAT_S16_LE: 384 break; 385 case SNDRV_PCM_FORMAT_S20_3LE: 386 iface |= 0x0004; 387 break; 388 case SNDRV_PCM_FORMAT_S24_LE: 389 iface |= 0x0008; 390 break; 391 } 392 393 /* set iface */ 394 snd_soc_write(codec, WM8960_IFACE1, iface); 395 return 0; 396 } 397 398 static int wm8960_mute(struct snd_soc_dai *dai, int mute) 399 { 400 struct snd_soc_codec *codec = dai->codec; 401 u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7; 402 403 if (mute) 404 snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8); 405 else 406 snd_soc_write(codec, WM8960_DACCTL1, mute_reg); 407 return 0; 408 } 409 410 static int wm8960_set_bias_level(struct snd_soc_codec *codec, 411 enum snd_soc_bias_level level) 412 { 413 struct wm8960_data *pdata = codec->dev->platform_data; 414 u16 reg; 415 416 switch (level) { 417 case SND_SOC_BIAS_ON: 418 break; 419 420 case SND_SOC_BIAS_PREPARE: 421 /* Set VMID to 2x50k */ 422 reg = snd_soc_read(codec, WM8960_POWER1); 423 reg &= ~0x180; 424 reg |= 0x80; 425 snd_soc_write(codec, WM8960_POWER1, reg); 426 break; 427 428 case SND_SOC_BIAS_STANDBY: 429 if (codec->bias_level == SND_SOC_BIAS_OFF) { 430 /* Enable anti-pop features */ 431 snd_soc_write(codec, WM8960_APOP1, 432 WM8960_POBCTRL | WM8960_SOFT_ST | 433 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 434 435 /* Discharge HP output */ 436 reg = WM8960_DISOP; 437 if (pdata) 438 reg |= pdata->dres << 4; 439 snd_soc_write(codec, WM8960_APOP2, reg); 440 441 msleep(400); 442 443 snd_soc_write(codec, WM8960_APOP2, 0); 444 445 /* Enable & ramp VMID at 2x50k */ 446 reg = snd_soc_read(codec, WM8960_POWER1); 447 reg |= 0x80; 448 snd_soc_write(codec, WM8960_POWER1, reg); 449 msleep(100); 450 451 /* Enable VREF */ 452 snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF); 453 454 /* Disable anti-pop features */ 455 snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN); 456 } 457 458 /* Set VMID to 2x250k */ 459 reg = snd_soc_read(codec, WM8960_POWER1); 460 reg &= ~0x180; 461 reg |= 0x100; 462 snd_soc_write(codec, WM8960_POWER1, reg); 463 break; 464 465 case SND_SOC_BIAS_OFF: 466 /* Enable anti-pop features */ 467 snd_soc_write(codec, WM8960_APOP1, 468 WM8960_POBCTRL | WM8960_SOFT_ST | 469 WM8960_BUFDCOPEN | WM8960_BUFIOEN); 470 471 /* Disable VMID and VREF, let them discharge */ 472 snd_soc_write(codec, WM8960_POWER1, 0); 473 msleep(600); 474 475 snd_soc_write(codec, WM8960_APOP1, 0); 476 break; 477 } 478 479 codec->bias_level = level; 480 481 return 0; 482 } 483 484 /* PLL divisors */ 485 struct _pll_div { 486 u32 pre_div:1; 487 u32 n:4; 488 u32 k:24; 489 }; 490 491 /* The size in bits of the pll divide multiplied by 10 492 * to allow rounding later */ 493 #define FIXED_PLL_SIZE ((1 << 24) * 10) 494 495 static int pll_factors(unsigned int source, unsigned int target, 496 struct _pll_div *pll_div) 497 { 498 unsigned long long Kpart; 499 unsigned int K, Ndiv, Nmod; 500 501 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target); 502 503 /* Scale up target to PLL operating frequency */ 504 target *= 4; 505 506 Ndiv = target / source; 507 if (Ndiv < 6) { 508 source >>= 1; 509 pll_div->pre_div = 1; 510 Ndiv = target / source; 511 } else 512 pll_div->pre_div = 0; 513 514 if ((Ndiv < 6) || (Ndiv > 12)) { 515 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv); 516 return -EINVAL; 517 } 518 519 pll_div->n = Ndiv; 520 Nmod = target % source; 521 Kpart = FIXED_PLL_SIZE * (long long)Nmod; 522 523 do_div(Kpart, source); 524 525 K = Kpart & 0xFFFFFFFF; 526 527 /* Check if we need to round */ 528 if ((K % 10) >= 5) 529 K += 5; 530 531 /* Move down to proper range now rounding is done */ 532 K /= 10; 533 534 pll_div->k = K; 535 536 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n", 537 pll_div->n, pll_div->k, pll_div->pre_div); 538 539 return 0; 540 } 541 542 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 543 int source, unsigned int freq_in, unsigned int freq_out) 544 { 545 struct snd_soc_codec *codec = codec_dai->codec; 546 u16 reg; 547 static struct _pll_div pll_div; 548 int ret; 549 550 if (freq_in && freq_out) { 551 ret = pll_factors(freq_in, freq_out, &pll_div); 552 if (ret != 0) 553 return ret; 554 } 555 556 /* Disable the PLL: even if we are changing the frequency the 557 * PLL needs to be disabled while we do so. */ 558 snd_soc_write(codec, WM8960_CLOCK1, 559 snd_soc_read(codec, WM8960_CLOCK1) & ~1); 560 snd_soc_write(codec, WM8960_POWER2, 561 snd_soc_read(codec, WM8960_POWER2) & ~1); 562 563 if (!freq_in || !freq_out) 564 return 0; 565 566 reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f; 567 reg |= pll_div.pre_div << 4; 568 reg |= pll_div.n; 569 570 if (pll_div.k) { 571 reg |= 0x20; 572 573 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f); 574 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff); 575 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff); 576 } 577 snd_soc_write(codec, WM8960_PLL1, reg); 578 579 /* Turn it on */ 580 snd_soc_write(codec, WM8960_POWER2, 581 snd_soc_read(codec, WM8960_POWER2) | 1); 582 msleep(250); 583 snd_soc_write(codec, WM8960_CLOCK1, 584 snd_soc_read(codec, WM8960_CLOCK1) | 1); 585 586 return 0; 587 } 588 589 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 590 int div_id, int div) 591 { 592 struct snd_soc_codec *codec = codec_dai->codec; 593 u16 reg; 594 595 switch (div_id) { 596 case WM8960_SYSCLKSEL: 597 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1fe; 598 snd_soc_write(codec, WM8960_CLOCK1, reg | div); 599 break; 600 case WM8960_SYSCLKDIV: 601 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9; 602 snd_soc_write(codec, WM8960_CLOCK1, reg | div); 603 break; 604 case WM8960_DACDIV: 605 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7; 606 snd_soc_write(codec, WM8960_CLOCK1, reg | div); 607 break; 608 case WM8960_OPCLKDIV: 609 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f; 610 snd_soc_write(codec, WM8960_PLL1, reg | div); 611 break; 612 case WM8960_DCLKDIV: 613 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f; 614 snd_soc_write(codec, WM8960_CLOCK2, reg | div); 615 break; 616 case WM8960_TOCLKSEL: 617 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd; 618 snd_soc_write(codec, WM8960_ADDCTL1, reg | div); 619 break; 620 default: 621 return -EINVAL; 622 } 623 624 return 0; 625 } 626 627 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000 628 629 #define WM8960_FORMATS \ 630 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 631 SNDRV_PCM_FMTBIT_S24_LE) 632 633 static struct snd_soc_dai_ops wm8960_dai_ops = { 634 .hw_params = wm8960_hw_params, 635 .digital_mute = wm8960_mute, 636 .set_fmt = wm8960_set_dai_fmt, 637 .set_clkdiv = wm8960_set_dai_clkdiv, 638 .set_pll = wm8960_set_dai_pll, 639 }; 640 641 struct snd_soc_dai wm8960_dai = { 642 .name = "WM8960", 643 .playback = { 644 .stream_name = "Playback", 645 .channels_min = 1, 646 .channels_max = 2, 647 .rates = WM8960_RATES, 648 .formats = WM8960_FORMATS,}, 649 .capture = { 650 .stream_name = "Capture", 651 .channels_min = 1, 652 .channels_max = 2, 653 .rates = WM8960_RATES, 654 .formats = WM8960_FORMATS,}, 655 .ops = &wm8960_dai_ops, 656 .symmetric_rates = 1, 657 }; 658 EXPORT_SYMBOL_GPL(wm8960_dai); 659 660 static int wm8960_suspend(struct platform_device *pdev, pm_message_t state) 661 { 662 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 663 struct snd_soc_codec *codec = socdev->card->codec; 664 665 wm8960_set_bias_level(codec, SND_SOC_BIAS_OFF); 666 return 0; 667 } 668 669 static int wm8960_resume(struct platform_device *pdev) 670 { 671 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 672 struct snd_soc_codec *codec = socdev->card->codec; 673 int i; 674 u8 data[2]; 675 u16 *cache = codec->reg_cache; 676 677 /* Sync reg_cache with the hardware */ 678 for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) { 679 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 680 data[1] = cache[i] & 0x00ff; 681 codec->hw_write(codec->control_data, data, 2); 682 } 683 684 wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 685 wm8960_set_bias_level(codec, codec->suspend_bias_level); 686 return 0; 687 } 688 689 static struct snd_soc_codec *wm8960_codec; 690 691 static int wm8960_probe(struct platform_device *pdev) 692 { 693 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 694 struct snd_soc_codec *codec; 695 int ret = 0; 696 697 if (wm8960_codec == NULL) { 698 dev_err(&pdev->dev, "Codec device not registered\n"); 699 return -ENODEV; 700 } 701 702 socdev->card->codec = wm8960_codec; 703 codec = wm8960_codec; 704 705 /* register pcms */ 706 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 707 if (ret < 0) { 708 dev_err(codec->dev, "failed to create pcms: %d\n", ret); 709 goto pcm_err; 710 } 711 712 snd_soc_add_controls(codec, wm8960_snd_controls, 713 ARRAY_SIZE(wm8960_snd_controls)); 714 wm8960_add_widgets(codec); 715 716 return ret; 717 718 pcm_err: 719 return ret; 720 } 721 722 /* power down chip */ 723 static int wm8960_remove(struct platform_device *pdev) 724 { 725 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 726 727 snd_soc_free_pcms(socdev); 728 snd_soc_dapm_free(socdev); 729 730 return 0; 731 } 732 733 struct snd_soc_codec_device soc_codec_dev_wm8960 = { 734 .probe = wm8960_probe, 735 .remove = wm8960_remove, 736 .suspend = wm8960_suspend, 737 .resume = wm8960_resume, 738 }; 739 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960); 740 741 static int wm8960_register(struct wm8960_priv *wm8960, 742 enum snd_soc_control_type control) 743 { 744 struct wm8960_data *pdata = wm8960->codec.dev->platform_data; 745 struct snd_soc_codec *codec = &wm8960->codec; 746 int ret; 747 u16 reg; 748 749 if (wm8960_codec) { 750 dev_err(codec->dev, "Another WM8960 is registered\n"); 751 ret = -EINVAL; 752 goto err; 753 } 754 755 if (!pdata) { 756 dev_warn(codec->dev, "No platform data supplied\n"); 757 } else { 758 if (pdata->dres > WM8960_DRES_MAX) { 759 dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres); 760 pdata->dres = 0; 761 } 762 } 763 764 mutex_init(&codec->mutex); 765 INIT_LIST_HEAD(&codec->dapm_widgets); 766 INIT_LIST_HEAD(&codec->dapm_paths); 767 768 codec->private_data = wm8960; 769 codec->name = "WM8960"; 770 codec->owner = THIS_MODULE; 771 codec->bias_level = SND_SOC_BIAS_OFF; 772 codec->set_bias_level = wm8960_set_bias_level; 773 codec->dai = &wm8960_dai; 774 codec->num_dai = 1; 775 codec->reg_cache_size = WM8960_CACHEREGNUM; 776 codec->reg_cache = &wm8960->reg_cache; 777 778 memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg)); 779 780 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); 781 if (ret < 0) { 782 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 783 goto err; 784 } 785 786 ret = wm8960_reset(codec); 787 if (ret < 0) { 788 dev_err(codec->dev, "Failed to issue reset\n"); 789 goto err; 790 } 791 792 wm8960_dai.dev = codec->dev; 793 794 wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 795 796 /* Latch the update bits */ 797 reg = snd_soc_read(codec, WM8960_LINVOL); 798 snd_soc_write(codec, WM8960_LINVOL, reg | 0x100); 799 reg = snd_soc_read(codec, WM8960_RINVOL); 800 snd_soc_write(codec, WM8960_RINVOL, reg | 0x100); 801 reg = snd_soc_read(codec, WM8960_LADC); 802 snd_soc_write(codec, WM8960_LADC, reg | 0x100); 803 reg = snd_soc_read(codec, WM8960_RADC); 804 snd_soc_write(codec, WM8960_RADC, reg | 0x100); 805 reg = snd_soc_read(codec, WM8960_LDAC); 806 snd_soc_write(codec, WM8960_LDAC, reg | 0x100); 807 reg = snd_soc_read(codec, WM8960_RDAC); 808 snd_soc_write(codec, WM8960_RDAC, reg | 0x100); 809 reg = snd_soc_read(codec, WM8960_LOUT1); 810 snd_soc_write(codec, WM8960_LOUT1, reg | 0x100); 811 reg = snd_soc_read(codec, WM8960_ROUT1); 812 snd_soc_write(codec, WM8960_ROUT1, reg | 0x100); 813 reg = snd_soc_read(codec, WM8960_LOUT2); 814 snd_soc_write(codec, WM8960_LOUT2, reg | 0x100); 815 reg = snd_soc_read(codec, WM8960_ROUT2); 816 snd_soc_write(codec, WM8960_ROUT2, reg | 0x100); 817 818 wm8960_codec = codec; 819 820 ret = snd_soc_register_codec(codec); 821 if (ret != 0) { 822 dev_err(codec->dev, "Failed to register codec: %d\n", ret); 823 goto err; 824 } 825 826 ret = snd_soc_register_dai(&wm8960_dai); 827 if (ret != 0) { 828 dev_err(codec->dev, "Failed to register DAI: %d\n", ret); 829 goto err_codec; 830 } 831 832 return 0; 833 834 err_codec: 835 snd_soc_unregister_codec(codec); 836 err: 837 kfree(wm8960); 838 return ret; 839 } 840 841 static void wm8960_unregister(struct wm8960_priv *wm8960) 842 { 843 wm8960_set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF); 844 snd_soc_unregister_dai(&wm8960_dai); 845 snd_soc_unregister_codec(&wm8960->codec); 846 kfree(wm8960); 847 wm8960_codec = NULL; 848 } 849 850 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c, 851 const struct i2c_device_id *id) 852 { 853 struct wm8960_priv *wm8960; 854 struct snd_soc_codec *codec; 855 856 wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL); 857 if (wm8960 == NULL) 858 return -ENOMEM; 859 860 codec = &wm8960->codec; 861 862 i2c_set_clientdata(i2c, wm8960); 863 codec->control_data = i2c; 864 865 codec->dev = &i2c->dev; 866 867 return wm8960_register(wm8960, SND_SOC_I2C); 868 } 869 870 static __devexit int wm8960_i2c_remove(struct i2c_client *client) 871 { 872 struct wm8960_priv *wm8960 = i2c_get_clientdata(client); 873 wm8960_unregister(wm8960); 874 return 0; 875 } 876 877 static const struct i2c_device_id wm8960_i2c_id[] = { 878 { "wm8960", 0 }, 879 { } 880 }; 881 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id); 882 883 static struct i2c_driver wm8960_i2c_driver = { 884 .driver = { 885 .name = "WM8960 I2C Codec", 886 .owner = THIS_MODULE, 887 }, 888 .probe = wm8960_i2c_probe, 889 .remove = __devexit_p(wm8960_i2c_remove), 890 .id_table = wm8960_i2c_id, 891 }; 892 893 static int __init wm8960_modinit(void) 894 { 895 int ret; 896 897 ret = i2c_add_driver(&wm8960_i2c_driver); 898 if (ret != 0) { 899 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n", 900 ret); 901 } 902 903 return ret; 904 } 905 module_init(wm8960_modinit); 906 907 static void __exit wm8960_exit(void) 908 { 909 i2c_del_driver(&wm8960_i2c_driver); 910 } 911 module_exit(wm8960_exit); 912 913 914 MODULE_DESCRIPTION("ASoC WM8960 driver"); 915 MODULE_AUTHOR("Liam Girdwood"); 916 MODULE_LICENSE("GPL"); 917