1 /* 2 * wm8900.c -- WM8900 ALSA Soc Audio driver 3 * 4 * Copyright 2007, 2008 Wolfson Microelectronics PLC. 5 * 6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 * 12 * TODO: 13 * - Tristating. 14 * - TDM. 15 * - Jack detect. 16 * - FLL source configuration, currently only MCLK is supported. 17 */ 18 19 #include <linux/module.h> 20 #include <linux/moduleparam.h> 21 #include <linux/kernel.h> 22 #include <linux/init.h> 23 #include <linux/delay.h> 24 #include <linux/pm.h> 25 #include <linux/i2c.h> 26 #include <linux/regmap.h> 27 #include <linux/spi/spi.h> 28 #include <linux/slab.h> 29 #include <sound/core.h> 30 #include <sound/pcm.h> 31 #include <sound/pcm_params.h> 32 #include <sound/soc.h> 33 #include <sound/initval.h> 34 #include <sound/tlv.h> 35 36 #include "wm8900.h" 37 38 /* WM8900 register space */ 39 #define WM8900_REG_RESET 0x0 40 #define WM8900_REG_ID 0x0 41 #define WM8900_REG_POWER1 0x1 42 #define WM8900_REG_POWER2 0x2 43 #define WM8900_REG_POWER3 0x3 44 #define WM8900_REG_AUDIO1 0x4 45 #define WM8900_REG_AUDIO2 0x5 46 #define WM8900_REG_CLOCKING1 0x6 47 #define WM8900_REG_CLOCKING2 0x7 48 #define WM8900_REG_AUDIO3 0x8 49 #define WM8900_REG_AUDIO4 0x9 50 #define WM8900_REG_DACCTRL 0xa 51 #define WM8900_REG_LDAC_DV 0xb 52 #define WM8900_REG_RDAC_DV 0xc 53 #define WM8900_REG_SIDETONE 0xd 54 #define WM8900_REG_ADCCTRL 0xe 55 #define WM8900_REG_LADC_DV 0xf 56 #define WM8900_REG_RADC_DV 0x10 57 #define WM8900_REG_GPIO 0x12 58 #define WM8900_REG_INCTL 0x15 59 #define WM8900_REG_LINVOL 0x16 60 #define WM8900_REG_RINVOL 0x17 61 #define WM8900_REG_INBOOSTMIX1 0x18 62 #define WM8900_REG_INBOOSTMIX2 0x19 63 #define WM8900_REG_ADCPATH 0x1a 64 #define WM8900_REG_AUXBOOST 0x1b 65 #define WM8900_REG_ADDCTL 0x1e 66 #define WM8900_REG_FLLCTL1 0x24 67 #define WM8900_REG_FLLCTL2 0x25 68 #define WM8900_REG_FLLCTL3 0x26 69 #define WM8900_REG_FLLCTL4 0x27 70 #define WM8900_REG_FLLCTL5 0x28 71 #define WM8900_REG_FLLCTL6 0x29 72 #define WM8900_REG_LOUTMIXCTL1 0x2c 73 #define WM8900_REG_ROUTMIXCTL1 0x2d 74 #define WM8900_REG_BYPASS1 0x2e 75 #define WM8900_REG_BYPASS2 0x2f 76 #define WM8900_REG_AUXOUT_CTL 0x30 77 #define WM8900_REG_LOUT1CTL 0x33 78 #define WM8900_REG_ROUT1CTL 0x34 79 #define WM8900_REG_LOUT2CTL 0x35 80 #define WM8900_REG_ROUT2CTL 0x36 81 #define WM8900_REG_HPCTL1 0x3a 82 #define WM8900_REG_OUTBIASCTL 0x73 83 84 #define WM8900_MAXREG 0x80 85 86 #define WM8900_REG_ADDCTL_OUT1_DIS 0x80 87 #define WM8900_REG_ADDCTL_OUT2_DIS 0x40 88 #define WM8900_REG_ADDCTL_VMID_DIS 0x20 89 #define WM8900_REG_ADDCTL_BIAS_SRC 0x10 90 #define WM8900_REG_ADDCTL_VMID_SOFTST 0x04 91 #define WM8900_REG_ADDCTL_TEMP_SD 0x02 92 93 #define WM8900_REG_GPIO_TEMP_ENA 0x2 94 95 #define WM8900_REG_POWER1_STARTUP_BIAS_ENA 0x0100 96 #define WM8900_REG_POWER1_BIAS_ENA 0x0008 97 #define WM8900_REG_POWER1_VMID_BUF_ENA 0x0004 98 #define WM8900_REG_POWER1_FLL_ENA 0x0040 99 100 #define WM8900_REG_POWER2_SYSCLK_ENA 0x8000 101 #define WM8900_REG_POWER2_ADCL_ENA 0x0002 102 #define WM8900_REG_POWER2_ADCR_ENA 0x0001 103 104 #define WM8900_REG_POWER3_DACL_ENA 0x0002 105 #define WM8900_REG_POWER3_DACR_ENA 0x0001 106 107 #define WM8900_REG_AUDIO1_AIF_FMT_MASK 0x0018 108 #define WM8900_REG_AUDIO1_LRCLK_INV 0x0080 109 #define WM8900_REG_AUDIO1_BCLK_INV 0x0100 110 111 #define WM8900_REG_CLOCKING1_BCLK_DIR 0x1 112 #define WM8900_REG_CLOCKING1_MCLK_SRC 0x100 113 #define WM8900_REG_CLOCKING1_BCLK_MASK 0x01e 114 #define WM8900_REG_CLOCKING1_OPCLK_MASK 0x7000 115 116 #define WM8900_REG_CLOCKING2_ADC_CLKDIV 0xe0 117 #define WM8900_REG_CLOCKING2_DAC_CLKDIV 0x1c 118 119 #define WM8900_REG_DACCTRL_MUTE 0x004 120 #define WM8900_REG_DACCTRL_DAC_SB_FILT 0x100 121 #define WM8900_REG_DACCTRL_AIF_LRCLKRATE 0x400 122 123 #define WM8900_REG_AUDIO3_ADCLRC_DIR 0x0800 124 125 #define WM8900_REG_AUDIO4_DACLRC_DIR 0x0800 126 127 #define WM8900_REG_FLLCTL1_OSC_ENA 0x100 128 129 #define WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF 0x100 130 131 #define WM8900_REG_HPCTL1_HP_IPSTAGE_ENA 0x80 132 #define WM8900_REG_HPCTL1_HP_OPSTAGE_ENA 0x40 133 #define WM8900_REG_HPCTL1_HP_CLAMP_IP 0x20 134 #define WM8900_REG_HPCTL1_HP_CLAMP_OP 0x10 135 #define WM8900_REG_HPCTL1_HP_SHORT 0x08 136 #define WM8900_REG_HPCTL1_HP_SHORT2 0x04 137 138 #define WM8900_LRC_MASK 0x03ff 139 140 struct wm8900_priv { 141 struct regmap *regmap; 142 143 u32 fll_in; /* FLL input frequency */ 144 u32 fll_out; /* FLL output frequency */ 145 }; 146 147 /* 148 * wm8900 register cache. We can't read the entire register space and we 149 * have slow control buses so we cache the registers. 150 */ 151 static const struct reg_default wm8900_reg_defaults[] = { 152 { 1, 0x0000 }, 153 { 2, 0xc000 }, 154 { 3, 0x0000 }, 155 { 4, 0x4050 }, 156 { 5, 0x4000 }, 157 { 6, 0x0008 }, 158 { 7, 0x0000 }, 159 { 8, 0x0040 }, 160 { 9, 0x0040 }, 161 { 10, 0x1004 }, 162 { 11, 0x00c0 }, 163 { 12, 0x00c0 }, 164 { 13, 0x0000 }, 165 { 14, 0x0100 }, 166 { 15, 0x00c0 }, 167 { 16, 0x00c0 }, 168 { 17, 0x0000 }, 169 { 18, 0xb001 }, 170 { 19, 0x0000 }, 171 { 20, 0x0000 }, 172 { 21, 0x0044 }, 173 { 22, 0x004c }, 174 { 23, 0x004c }, 175 { 24, 0x0044 }, 176 { 25, 0x0044 }, 177 { 26, 0x0000 }, 178 { 27, 0x0044 }, 179 { 28, 0x0000 }, 180 { 29, 0x0000 }, 181 { 30, 0x0002 }, 182 { 31, 0x0000 }, 183 { 32, 0x0000 }, 184 { 33, 0x0000 }, 185 { 34, 0x0000 }, 186 { 35, 0x0000 }, 187 { 36, 0x0008 }, 188 { 37, 0x0000 }, 189 { 38, 0x0000 }, 190 { 39, 0x0008 }, 191 { 40, 0x0097 }, 192 { 41, 0x0100 }, 193 { 42, 0x0000 }, 194 { 43, 0x0000 }, 195 { 44, 0x0050 }, 196 { 45, 0x0050 }, 197 { 46, 0x0055 }, 198 { 47, 0x0055 }, 199 { 48, 0x0055 }, 200 { 49, 0x0000 }, 201 { 50, 0x0000 }, 202 { 51, 0x0079 }, 203 { 52, 0x0079 }, 204 { 53, 0x0079 }, 205 { 54, 0x0079 }, 206 { 55, 0x0000 }, 207 }; 208 209 static bool wm8900_volatile_register(struct device *dev, unsigned int reg) 210 { 211 switch (reg) { 212 case WM8900_REG_ID: 213 return true; 214 default: 215 return false; 216 } 217 } 218 219 static void wm8900_reset(struct snd_soc_codec *codec) 220 { 221 snd_soc_write(codec, WM8900_REG_RESET, 0); 222 } 223 224 static int wm8900_hp_event(struct snd_soc_dapm_widget *w, 225 struct snd_kcontrol *kcontrol, int event) 226 { 227 struct snd_soc_codec *codec = w->codec; 228 u16 hpctl1 = snd_soc_read(codec, WM8900_REG_HPCTL1); 229 230 switch (event) { 231 case SND_SOC_DAPM_PRE_PMU: 232 /* Clamp headphone outputs */ 233 hpctl1 = WM8900_REG_HPCTL1_HP_CLAMP_IP | 234 WM8900_REG_HPCTL1_HP_CLAMP_OP; 235 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1); 236 break; 237 238 case SND_SOC_DAPM_POST_PMU: 239 /* Enable the input stage */ 240 hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_IP; 241 hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT | 242 WM8900_REG_HPCTL1_HP_SHORT2 | 243 WM8900_REG_HPCTL1_HP_IPSTAGE_ENA; 244 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1); 245 246 msleep(400); 247 248 /* Enable the output stage */ 249 hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_OP; 250 hpctl1 |= WM8900_REG_HPCTL1_HP_OPSTAGE_ENA; 251 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1); 252 253 /* Remove the shorts */ 254 hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT2; 255 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1); 256 hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT; 257 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1); 258 break; 259 260 case SND_SOC_DAPM_PRE_PMD: 261 /* Short the output */ 262 hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT; 263 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1); 264 265 /* Disable the output stage */ 266 hpctl1 &= ~WM8900_REG_HPCTL1_HP_OPSTAGE_ENA; 267 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1); 268 269 /* Clamp the outputs and power down input */ 270 hpctl1 |= WM8900_REG_HPCTL1_HP_CLAMP_IP | 271 WM8900_REG_HPCTL1_HP_CLAMP_OP; 272 hpctl1 &= ~WM8900_REG_HPCTL1_HP_IPSTAGE_ENA; 273 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1); 274 break; 275 276 case SND_SOC_DAPM_POST_PMD: 277 /* Disable everything */ 278 snd_soc_write(codec, WM8900_REG_HPCTL1, 0); 279 break; 280 281 default: 282 WARN(1, "Invalid event %d\n", event); 283 break; 284 } 285 286 return 0; 287 } 288 289 static const DECLARE_TLV_DB_SCALE(out_pga_tlv, -5700, 100, 0); 290 291 static const DECLARE_TLV_DB_SCALE(out_mix_tlv, -1500, 300, 0); 292 293 static const DECLARE_TLV_DB_SCALE(in_boost_tlv, -1200, 600, 0); 294 295 static const DECLARE_TLV_DB_SCALE(in_pga_tlv, -1200, 100, 0); 296 297 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0); 298 299 static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1); 300 301 static const DECLARE_TLV_DB_SCALE(adc_svol_tlv, -3600, 300, 0); 302 303 static const DECLARE_TLV_DB_SCALE(adc_tlv, -7200, 75, 1); 304 305 static const char *mic_bias_level_txt[] = { "0.9*AVDD", "0.65*AVDD" }; 306 307 static SOC_ENUM_SINGLE_DECL(mic_bias_level, 308 WM8900_REG_INCTL, 8, mic_bias_level_txt); 309 310 static const char *dac_mute_rate_txt[] = { "Fast", "Slow" }; 311 312 static SOC_ENUM_SINGLE_DECL(dac_mute_rate, 313 WM8900_REG_DACCTRL, 7, dac_mute_rate_txt); 314 315 static const char *dac_deemphasis_txt[] = { 316 "Disabled", "32kHz", "44.1kHz", "48kHz" 317 }; 318 319 static SOC_ENUM_SINGLE_DECL(dac_deemphasis, 320 WM8900_REG_DACCTRL, 4, dac_deemphasis_txt); 321 322 static const char *adc_hpf_cut_txt[] = { 323 "Hi-fi mode", "Voice mode 1", "Voice mode 2", "Voice mode 3" 324 }; 325 326 static SOC_ENUM_SINGLE_DECL(adc_hpf_cut, 327 WM8900_REG_ADCCTRL, 5, adc_hpf_cut_txt); 328 329 static const char *lr_txt[] = { 330 "Left", "Right" 331 }; 332 333 static SOC_ENUM_SINGLE_DECL(aifl_src, 334 WM8900_REG_AUDIO1, 15, lr_txt); 335 336 static SOC_ENUM_SINGLE_DECL(aifr_src, 337 WM8900_REG_AUDIO1, 14, lr_txt); 338 339 static SOC_ENUM_SINGLE_DECL(dacl_src, 340 WM8900_REG_AUDIO2, 15, lr_txt); 341 342 static SOC_ENUM_SINGLE_DECL(dacr_src, 343 WM8900_REG_AUDIO2, 14, lr_txt); 344 345 static const char *sidetone_txt[] = { 346 "Disabled", "Left ADC", "Right ADC" 347 }; 348 349 static SOC_ENUM_SINGLE_DECL(dacl_sidetone, 350 WM8900_REG_SIDETONE, 2, sidetone_txt); 351 352 static SOC_ENUM_SINGLE_DECL(dacr_sidetone, 353 WM8900_REG_SIDETONE, 0, sidetone_txt); 354 355 static const struct snd_kcontrol_new wm8900_snd_controls[] = { 356 SOC_ENUM("Mic Bias Level", mic_bias_level), 357 358 SOC_SINGLE_TLV("Left Input PGA Volume", WM8900_REG_LINVOL, 0, 31, 0, 359 in_pga_tlv), 360 SOC_SINGLE("Left Input PGA Switch", WM8900_REG_LINVOL, 6, 1, 1), 361 SOC_SINGLE("Left Input PGA ZC Switch", WM8900_REG_LINVOL, 7, 1, 0), 362 363 SOC_SINGLE_TLV("Right Input PGA Volume", WM8900_REG_RINVOL, 0, 31, 0, 364 in_pga_tlv), 365 SOC_SINGLE("Right Input PGA Switch", WM8900_REG_RINVOL, 6, 1, 1), 366 SOC_SINGLE("Right Input PGA ZC Switch", WM8900_REG_RINVOL, 7, 1, 0), 367 368 SOC_SINGLE("DAC Soft Mute Switch", WM8900_REG_DACCTRL, 6, 1, 1), 369 SOC_ENUM("DAC Mute Rate", dac_mute_rate), 370 SOC_SINGLE("DAC Mono Switch", WM8900_REG_DACCTRL, 9, 1, 0), 371 SOC_ENUM("DAC Deemphasis", dac_deemphasis), 372 SOC_SINGLE("DAC Sigma-Delta Modulator Clock Switch", WM8900_REG_DACCTRL, 373 12, 1, 0), 374 375 SOC_SINGLE("ADC HPF Switch", WM8900_REG_ADCCTRL, 8, 1, 0), 376 SOC_ENUM("ADC HPF Cut-Off", adc_hpf_cut), 377 SOC_DOUBLE("ADC Invert Switch", WM8900_REG_ADCCTRL, 1, 0, 1, 0), 378 SOC_SINGLE_TLV("Left ADC Sidetone Volume", WM8900_REG_SIDETONE, 9, 12, 0, 379 adc_svol_tlv), 380 SOC_SINGLE_TLV("Right ADC Sidetone Volume", WM8900_REG_SIDETONE, 5, 12, 0, 381 adc_svol_tlv), 382 SOC_ENUM("Left Digital Audio Source", aifl_src), 383 SOC_ENUM("Right Digital Audio Source", aifr_src), 384 385 SOC_SINGLE_TLV("DAC Input Boost Volume", WM8900_REG_AUDIO2, 10, 4, 0, 386 dac_boost_tlv), 387 SOC_ENUM("Left DAC Source", dacl_src), 388 SOC_ENUM("Right DAC Source", dacr_src), 389 SOC_ENUM("Left DAC Sidetone", dacl_sidetone), 390 SOC_ENUM("Right DAC Sidetone", dacr_sidetone), 391 SOC_DOUBLE("DAC Invert Switch", WM8900_REG_DACCTRL, 1, 0, 1, 0), 392 393 SOC_DOUBLE_R_TLV("Digital Playback Volume", 394 WM8900_REG_LDAC_DV, WM8900_REG_RDAC_DV, 395 1, 96, 0, dac_tlv), 396 SOC_DOUBLE_R_TLV("Digital Capture Volume", 397 WM8900_REG_LADC_DV, WM8900_REG_RADC_DV, 1, 119, 0, adc_tlv), 398 399 SOC_SINGLE_TLV("LINPUT3 Bypass Volume", WM8900_REG_LOUTMIXCTL1, 4, 7, 0, 400 out_mix_tlv), 401 SOC_SINGLE_TLV("RINPUT3 Bypass Volume", WM8900_REG_ROUTMIXCTL1, 4, 7, 0, 402 out_mix_tlv), 403 SOC_SINGLE_TLV("Left AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 4, 7, 0, 404 out_mix_tlv), 405 SOC_SINGLE_TLV("Right AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 0, 7, 0, 406 out_mix_tlv), 407 408 SOC_SINGLE_TLV("LeftIn to RightOut Mixer Volume", WM8900_REG_BYPASS1, 0, 7, 0, 409 out_mix_tlv), 410 SOC_SINGLE_TLV("LeftIn to LeftOut Mixer Volume", WM8900_REG_BYPASS1, 4, 7, 0, 411 out_mix_tlv), 412 SOC_SINGLE_TLV("RightIn to LeftOut Mixer Volume", WM8900_REG_BYPASS2, 0, 7, 0, 413 out_mix_tlv), 414 SOC_SINGLE_TLV("RightIn to RightOut Mixer Volume", WM8900_REG_BYPASS2, 4, 7, 0, 415 out_mix_tlv), 416 417 SOC_SINGLE_TLV("IN2L Boost Volume", WM8900_REG_INBOOSTMIX1, 0, 3, 0, 418 in_boost_tlv), 419 SOC_SINGLE_TLV("IN3L Boost Volume", WM8900_REG_INBOOSTMIX1, 4, 3, 0, 420 in_boost_tlv), 421 SOC_SINGLE_TLV("IN2R Boost Volume", WM8900_REG_INBOOSTMIX2, 0, 3, 0, 422 in_boost_tlv), 423 SOC_SINGLE_TLV("IN3R Boost Volume", WM8900_REG_INBOOSTMIX2, 4, 3, 0, 424 in_boost_tlv), 425 SOC_SINGLE_TLV("Left AUX Boost Volume", WM8900_REG_AUXBOOST, 4, 3, 0, 426 in_boost_tlv), 427 SOC_SINGLE_TLV("Right AUX Boost Volume", WM8900_REG_AUXBOOST, 0, 3, 0, 428 in_boost_tlv), 429 430 SOC_DOUBLE_R_TLV("LINEOUT1 Volume", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL, 431 0, 63, 0, out_pga_tlv), 432 SOC_DOUBLE_R("LINEOUT1 Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL, 433 6, 1, 1), 434 SOC_DOUBLE_R("LINEOUT1 ZC Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL, 435 7, 1, 0), 436 437 SOC_DOUBLE_R_TLV("LINEOUT2 Volume", 438 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 439 0, 63, 0, out_pga_tlv), 440 SOC_DOUBLE_R("LINEOUT2 Switch", 441 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 6, 1, 1), 442 SOC_DOUBLE_R("LINEOUT2 ZC Switch", 443 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 7, 1, 0), 444 SOC_SINGLE("LINEOUT2 LP -12dB", WM8900_REG_LOUTMIXCTL1, 445 0, 1, 1), 446 447 }; 448 449 static const struct snd_kcontrol_new wm8900_dapm_loutput2_control = 450 SOC_DAPM_SINGLE("LINEOUT2L Switch", WM8900_REG_POWER3, 6, 1, 0); 451 452 static const struct snd_kcontrol_new wm8900_dapm_routput2_control = 453 SOC_DAPM_SINGLE("LINEOUT2R Switch", WM8900_REG_POWER3, 5, 1, 0); 454 455 static const struct snd_kcontrol_new wm8900_loutmix_controls[] = { 456 SOC_DAPM_SINGLE("LINPUT3 Bypass Switch", WM8900_REG_LOUTMIXCTL1, 7, 1, 0), 457 SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 7, 1, 0), 458 SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 7, 1, 0), 459 SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 3, 1, 0), 460 SOC_DAPM_SINGLE("DACL Switch", WM8900_REG_LOUTMIXCTL1, 8, 1, 0), 461 }; 462 463 static const struct snd_kcontrol_new wm8900_routmix_controls[] = { 464 SOC_DAPM_SINGLE("RINPUT3 Bypass Switch", WM8900_REG_ROUTMIXCTL1, 7, 1, 0), 465 SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 3, 1, 0), 466 SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 3, 1, 0), 467 SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 7, 1, 0), 468 SOC_DAPM_SINGLE("DACR Switch", WM8900_REG_ROUTMIXCTL1, 8, 1, 0), 469 }; 470 471 static const struct snd_kcontrol_new wm8900_linmix_controls[] = { 472 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INBOOSTMIX1, 2, 1, 1), 473 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INBOOSTMIX1, 6, 1, 1), 474 SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 6, 1, 1), 475 SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 6, 1, 0), 476 }; 477 478 static const struct snd_kcontrol_new wm8900_rinmix_controls[] = { 479 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INBOOSTMIX2, 2, 1, 1), 480 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INBOOSTMIX2, 6, 1, 1), 481 SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 2, 1, 1), 482 SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 2, 1, 0), 483 }; 484 485 static const struct snd_kcontrol_new wm8900_linpga_controls[] = { 486 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8900_REG_INCTL, 6, 1, 0), 487 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INCTL, 5, 1, 0), 488 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INCTL, 4, 1, 0), 489 }; 490 491 static const struct snd_kcontrol_new wm8900_rinpga_controls[] = { 492 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8900_REG_INCTL, 2, 1, 0), 493 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INCTL, 1, 1, 0), 494 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INCTL, 0, 1, 0), 495 }; 496 497 static const char *wm8900_lp_mux[] = { "Disabled", "Enabled" }; 498 499 static SOC_ENUM_SINGLE_DECL(wm8900_lineout2_lp_mux, 500 WM8900_REG_LOUTMIXCTL1, 1, wm8900_lp_mux); 501 502 static const struct snd_kcontrol_new wm8900_lineout2_lp = 503 SOC_DAPM_ENUM("Route", wm8900_lineout2_lp_mux); 504 505 static const struct snd_soc_dapm_widget wm8900_dapm_widgets[] = { 506 507 /* Externally visible pins */ 508 SND_SOC_DAPM_OUTPUT("LINEOUT1L"), 509 SND_SOC_DAPM_OUTPUT("LINEOUT1R"), 510 SND_SOC_DAPM_OUTPUT("LINEOUT2L"), 511 SND_SOC_DAPM_OUTPUT("LINEOUT2R"), 512 SND_SOC_DAPM_OUTPUT("HP_L"), 513 SND_SOC_DAPM_OUTPUT("HP_R"), 514 515 SND_SOC_DAPM_INPUT("RINPUT1"), 516 SND_SOC_DAPM_INPUT("LINPUT1"), 517 SND_SOC_DAPM_INPUT("RINPUT2"), 518 SND_SOC_DAPM_INPUT("LINPUT2"), 519 SND_SOC_DAPM_INPUT("RINPUT3"), 520 SND_SOC_DAPM_INPUT("LINPUT3"), 521 SND_SOC_DAPM_INPUT("AUX"), 522 523 SND_SOC_DAPM_VMID("VMID"), 524 525 /* Input */ 526 SND_SOC_DAPM_MIXER("Left Input PGA", WM8900_REG_POWER2, 3, 0, 527 wm8900_linpga_controls, 528 ARRAY_SIZE(wm8900_linpga_controls)), 529 SND_SOC_DAPM_MIXER("Right Input PGA", WM8900_REG_POWER2, 2, 0, 530 wm8900_rinpga_controls, 531 ARRAY_SIZE(wm8900_rinpga_controls)), 532 533 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8900_REG_POWER2, 5, 0, 534 wm8900_linmix_controls, 535 ARRAY_SIZE(wm8900_linmix_controls)), 536 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8900_REG_POWER2, 4, 0, 537 wm8900_rinmix_controls, 538 ARRAY_SIZE(wm8900_rinmix_controls)), 539 540 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8900_REG_POWER1, 4, 0, NULL, 0), 541 542 SND_SOC_DAPM_ADC("ADCL", "Left HiFi Capture", WM8900_REG_POWER2, 1, 0), 543 SND_SOC_DAPM_ADC("ADCR", "Right HiFi Capture", WM8900_REG_POWER2, 0, 0), 544 545 /* Output */ 546 SND_SOC_DAPM_DAC("DACL", "Left HiFi Playback", WM8900_REG_POWER3, 1, 0), 547 SND_SOC_DAPM_DAC("DACR", "Right HiFi Playback", WM8900_REG_POWER3, 0, 0), 548 549 SND_SOC_DAPM_PGA_E("Headphone Amplifier", WM8900_REG_POWER3, 7, 0, NULL, 0, 550 wm8900_hp_event, 551 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | 552 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), 553 554 SND_SOC_DAPM_PGA("LINEOUT1L PGA", WM8900_REG_POWER2, 8, 0, NULL, 0), 555 SND_SOC_DAPM_PGA("LINEOUT1R PGA", WM8900_REG_POWER2, 7, 0, NULL, 0), 556 557 SND_SOC_DAPM_MUX("LINEOUT2 LP", SND_SOC_NOPM, 0, 0, &wm8900_lineout2_lp), 558 SND_SOC_DAPM_PGA("LINEOUT2L PGA", WM8900_REG_POWER3, 6, 0, NULL, 0), 559 SND_SOC_DAPM_PGA("LINEOUT2R PGA", WM8900_REG_POWER3, 5, 0, NULL, 0), 560 561 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8900_REG_POWER3, 3, 0, 562 wm8900_loutmix_controls, 563 ARRAY_SIZE(wm8900_loutmix_controls)), 564 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8900_REG_POWER3, 2, 0, 565 wm8900_routmix_controls, 566 ARRAY_SIZE(wm8900_routmix_controls)), 567 }; 568 569 /* Target, Path, Source */ 570 static const struct snd_soc_dapm_route wm8900_dapm_routes[] = { 571 /* Inputs */ 572 {"Left Input PGA", "LINPUT1 Switch", "LINPUT1"}, 573 {"Left Input PGA", "LINPUT2 Switch", "LINPUT2"}, 574 {"Left Input PGA", "LINPUT3 Switch", "LINPUT3"}, 575 576 {"Right Input PGA", "RINPUT1 Switch", "RINPUT1"}, 577 {"Right Input PGA", "RINPUT2 Switch", "RINPUT2"}, 578 {"Right Input PGA", "RINPUT3 Switch", "RINPUT3"}, 579 580 {"Left Input Mixer", "LINPUT2 Switch", "LINPUT2"}, 581 {"Left Input Mixer", "LINPUT3 Switch", "LINPUT3"}, 582 {"Left Input Mixer", "AUX Switch", "AUX"}, 583 {"Left Input Mixer", "Input PGA Switch", "Left Input PGA"}, 584 585 {"Right Input Mixer", "RINPUT2 Switch", "RINPUT2"}, 586 {"Right Input Mixer", "RINPUT3 Switch", "RINPUT3"}, 587 {"Right Input Mixer", "AUX Switch", "AUX"}, 588 {"Right Input Mixer", "Input PGA Switch", "Right Input PGA"}, 589 590 {"ADCL", NULL, "Left Input Mixer"}, 591 {"ADCR", NULL, "Right Input Mixer"}, 592 593 /* Outputs */ 594 {"LINEOUT1L", NULL, "LINEOUT1L PGA"}, 595 {"LINEOUT1L PGA", NULL, "Left Output Mixer"}, 596 {"LINEOUT1R", NULL, "LINEOUT1R PGA"}, 597 {"LINEOUT1R PGA", NULL, "Right Output Mixer"}, 598 599 {"LINEOUT2L PGA", NULL, "Left Output Mixer"}, 600 {"LINEOUT2 LP", "Disabled", "LINEOUT2L PGA"}, 601 {"LINEOUT2 LP", "Enabled", "Left Output Mixer"}, 602 {"LINEOUT2L", NULL, "LINEOUT2 LP"}, 603 604 {"LINEOUT2R PGA", NULL, "Right Output Mixer"}, 605 {"LINEOUT2 LP", "Disabled", "LINEOUT2R PGA"}, 606 {"LINEOUT2 LP", "Enabled", "Right Output Mixer"}, 607 {"LINEOUT2R", NULL, "LINEOUT2 LP"}, 608 609 {"Left Output Mixer", "LINPUT3 Bypass Switch", "LINPUT3"}, 610 {"Left Output Mixer", "AUX Bypass Switch", "AUX"}, 611 {"Left Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"}, 612 {"Left Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"}, 613 {"Left Output Mixer", "DACL Switch", "DACL"}, 614 615 {"Right Output Mixer", "RINPUT3 Bypass Switch", "RINPUT3"}, 616 {"Right Output Mixer", "AUX Bypass Switch", "AUX"}, 617 {"Right Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"}, 618 {"Right Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"}, 619 {"Right Output Mixer", "DACR Switch", "DACR"}, 620 621 /* Note that the headphone output stage needs to be connected 622 * externally to LINEOUT2 via DC blocking capacitors. Other 623 * configurations are not supported. 624 * 625 * Note also that left and right headphone paths are treated as a 626 * mono path. 627 */ 628 {"Headphone Amplifier", NULL, "LINEOUT2 LP"}, 629 {"Headphone Amplifier", NULL, "LINEOUT2 LP"}, 630 {"HP_L", NULL, "Headphone Amplifier"}, 631 {"HP_R", NULL, "Headphone Amplifier"}, 632 }; 633 634 static int wm8900_hw_params(struct snd_pcm_substream *substream, 635 struct snd_pcm_hw_params *params, 636 struct snd_soc_dai *dai) 637 { 638 struct snd_soc_codec *codec = dai->codec; 639 u16 reg; 640 641 reg = snd_soc_read(codec, WM8900_REG_AUDIO1) & ~0x60; 642 643 switch (params_width(params)) { 644 case 16: 645 break; 646 case 20: 647 reg |= 0x20; 648 break; 649 case 24: 650 reg |= 0x40; 651 break; 652 case 32: 653 reg |= 0x60; 654 break; 655 default: 656 return -EINVAL; 657 } 658 659 snd_soc_write(codec, WM8900_REG_AUDIO1, reg); 660 661 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 662 reg = snd_soc_read(codec, WM8900_REG_DACCTRL); 663 664 if (params_rate(params) <= 24000) 665 reg |= WM8900_REG_DACCTRL_DAC_SB_FILT; 666 else 667 reg &= ~WM8900_REG_DACCTRL_DAC_SB_FILT; 668 669 snd_soc_write(codec, WM8900_REG_DACCTRL, reg); 670 } 671 672 return 0; 673 } 674 675 /* FLL divisors */ 676 struct _fll_div { 677 u16 fll_ratio; 678 u16 fllclk_div; 679 u16 fll_slow_lock_ref; 680 u16 n; 681 u16 k; 682 }; 683 684 /* The size in bits of the FLL divide multiplied by 10 685 * to allow rounding later */ 686 #define FIXED_FLL_SIZE ((1 << 16) * 10) 687 688 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref, 689 unsigned int Fout) 690 { 691 u64 Kpart; 692 unsigned int K, Ndiv, Nmod, target; 693 unsigned int div; 694 695 if (WARN_ON(!Fout)) 696 return -EINVAL; 697 698 /* The FLL must run at 90-100MHz which is then scaled down to 699 * the output value by FLLCLK_DIV. */ 700 target = Fout; 701 div = 1; 702 while (target < 90000000) { 703 div *= 2; 704 target *= 2; 705 } 706 707 if (target > 100000000) 708 printk(KERN_WARNING "wm8900: FLL rate %u out of range, Fref=%u" 709 " Fout=%u\n", target, Fref, Fout); 710 if (div > 32) { 711 printk(KERN_ERR "wm8900: Invalid FLL division rate %u, " 712 "Fref=%u, Fout=%u, target=%u\n", 713 div, Fref, Fout, target); 714 return -EINVAL; 715 } 716 717 fll_div->fllclk_div = div >> 2; 718 719 if (Fref < 48000) 720 fll_div->fll_slow_lock_ref = 1; 721 else 722 fll_div->fll_slow_lock_ref = 0; 723 724 Ndiv = target / Fref; 725 726 if (Fref < 1000000) 727 fll_div->fll_ratio = 8; 728 else 729 fll_div->fll_ratio = 1; 730 731 fll_div->n = Ndiv / fll_div->fll_ratio; 732 Nmod = (target / fll_div->fll_ratio) % Fref; 733 734 /* Calculate fractional part - scale up so we can round. */ 735 Kpart = FIXED_FLL_SIZE * (long long)Nmod; 736 737 do_div(Kpart, Fref); 738 739 K = Kpart & 0xFFFFFFFF; 740 741 if ((K % 10) >= 5) 742 K += 5; 743 744 /* Move down to proper range now rounding is done */ 745 fll_div->k = K / 10; 746 747 if (WARN_ON(target != Fout * (fll_div->fllclk_div << 2)) || 748 WARN_ON(!K && target != Fref * fll_div->fll_ratio * fll_div->n)) 749 return -EINVAL; 750 751 return 0; 752 } 753 754 static int wm8900_set_fll(struct snd_soc_codec *codec, 755 int fll_id, unsigned int freq_in, unsigned int freq_out) 756 { 757 struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec); 758 struct _fll_div fll_div; 759 760 if (wm8900->fll_in == freq_in && wm8900->fll_out == freq_out) 761 return 0; 762 763 /* The digital side should be disabled during any change. */ 764 snd_soc_update_bits(codec, WM8900_REG_POWER1, 765 WM8900_REG_POWER1_FLL_ENA, 0); 766 767 /* Disable the FLL? */ 768 if (!freq_in || !freq_out) { 769 snd_soc_update_bits(codec, WM8900_REG_CLOCKING1, 770 WM8900_REG_CLOCKING1_MCLK_SRC, 0); 771 snd_soc_update_bits(codec, WM8900_REG_FLLCTL1, 772 WM8900_REG_FLLCTL1_OSC_ENA, 0); 773 wm8900->fll_in = freq_in; 774 wm8900->fll_out = freq_out; 775 776 return 0; 777 } 778 779 if (fll_factors(&fll_div, freq_in, freq_out) != 0) 780 goto reenable; 781 782 wm8900->fll_in = freq_in; 783 wm8900->fll_out = freq_out; 784 785 /* The osclilator *MUST* be enabled before we enable the 786 * digital circuit. */ 787 snd_soc_write(codec, WM8900_REG_FLLCTL1, 788 fll_div.fll_ratio | WM8900_REG_FLLCTL1_OSC_ENA); 789 790 snd_soc_write(codec, WM8900_REG_FLLCTL4, fll_div.n >> 5); 791 snd_soc_write(codec, WM8900_REG_FLLCTL5, 792 (fll_div.fllclk_div << 6) | (fll_div.n & 0x1f)); 793 794 if (fll_div.k) { 795 snd_soc_write(codec, WM8900_REG_FLLCTL2, 796 (fll_div.k >> 8) | 0x100); 797 snd_soc_write(codec, WM8900_REG_FLLCTL3, fll_div.k & 0xff); 798 } else 799 snd_soc_write(codec, WM8900_REG_FLLCTL2, 0); 800 801 if (fll_div.fll_slow_lock_ref) 802 snd_soc_write(codec, WM8900_REG_FLLCTL6, 803 WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF); 804 else 805 snd_soc_write(codec, WM8900_REG_FLLCTL6, 0); 806 807 snd_soc_update_bits(codec, WM8900_REG_POWER1, 808 WM8900_REG_POWER1_FLL_ENA, 809 WM8900_REG_POWER1_FLL_ENA); 810 811 reenable: 812 snd_soc_update_bits(codec, WM8900_REG_CLOCKING1, 813 WM8900_REG_CLOCKING1_MCLK_SRC, 814 WM8900_REG_CLOCKING1_MCLK_SRC); 815 return 0; 816 } 817 818 static int wm8900_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 819 int source, unsigned int freq_in, unsigned int freq_out) 820 { 821 return wm8900_set_fll(codec_dai->codec, pll_id, freq_in, freq_out); 822 } 823 824 static int wm8900_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 825 int div_id, int div) 826 { 827 struct snd_soc_codec *codec = codec_dai->codec; 828 829 switch (div_id) { 830 case WM8900_BCLK_DIV: 831 snd_soc_update_bits(codec, WM8900_REG_CLOCKING1, 832 WM8900_REG_CLOCKING1_BCLK_MASK, div); 833 break; 834 case WM8900_OPCLK_DIV: 835 snd_soc_update_bits(codec, WM8900_REG_CLOCKING1, 836 WM8900_REG_CLOCKING1_OPCLK_MASK, div); 837 break; 838 case WM8900_DAC_LRCLK: 839 snd_soc_update_bits(codec, WM8900_REG_AUDIO4, 840 WM8900_LRC_MASK, div); 841 break; 842 case WM8900_ADC_LRCLK: 843 snd_soc_update_bits(codec, WM8900_REG_AUDIO3, 844 WM8900_LRC_MASK, div); 845 break; 846 case WM8900_DAC_CLKDIV: 847 snd_soc_update_bits(codec, WM8900_REG_CLOCKING2, 848 WM8900_REG_CLOCKING2_DAC_CLKDIV, div); 849 break; 850 case WM8900_ADC_CLKDIV: 851 snd_soc_update_bits(codec, WM8900_REG_CLOCKING2, 852 WM8900_REG_CLOCKING2_ADC_CLKDIV, div); 853 break; 854 case WM8900_LRCLK_MODE: 855 snd_soc_update_bits(codec, WM8900_REG_DACCTRL, 856 WM8900_REG_DACCTRL_AIF_LRCLKRATE, div); 857 break; 858 default: 859 return -EINVAL; 860 } 861 862 return 0; 863 } 864 865 866 static int wm8900_set_dai_fmt(struct snd_soc_dai *codec_dai, 867 unsigned int fmt) 868 { 869 struct snd_soc_codec *codec = codec_dai->codec; 870 unsigned int clocking1, aif1, aif3, aif4; 871 872 clocking1 = snd_soc_read(codec, WM8900_REG_CLOCKING1); 873 aif1 = snd_soc_read(codec, WM8900_REG_AUDIO1); 874 aif3 = snd_soc_read(codec, WM8900_REG_AUDIO3); 875 aif4 = snd_soc_read(codec, WM8900_REG_AUDIO4); 876 877 /* set master/slave audio interface */ 878 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 879 case SND_SOC_DAIFMT_CBS_CFS: 880 clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR; 881 aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR; 882 aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR; 883 break; 884 case SND_SOC_DAIFMT_CBS_CFM: 885 clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR; 886 aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR; 887 aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR; 888 break; 889 case SND_SOC_DAIFMT_CBM_CFM: 890 clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR; 891 aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR; 892 aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR; 893 break; 894 case SND_SOC_DAIFMT_CBM_CFS: 895 clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR; 896 aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR; 897 aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR; 898 break; 899 default: 900 return -EINVAL; 901 } 902 903 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 904 case SND_SOC_DAIFMT_DSP_A: 905 aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK; 906 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV; 907 break; 908 case SND_SOC_DAIFMT_DSP_B: 909 aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK; 910 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV; 911 break; 912 case SND_SOC_DAIFMT_I2S: 913 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK; 914 aif1 |= 0x10; 915 break; 916 case SND_SOC_DAIFMT_RIGHT_J: 917 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK; 918 break; 919 case SND_SOC_DAIFMT_LEFT_J: 920 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK; 921 aif1 |= 0x8; 922 break; 923 default: 924 return -EINVAL; 925 } 926 927 /* Clock inversion */ 928 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 929 case SND_SOC_DAIFMT_DSP_A: 930 case SND_SOC_DAIFMT_DSP_B: 931 /* frame inversion not valid for DSP modes */ 932 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 933 case SND_SOC_DAIFMT_NB_NF: 934 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV; 935 break; 936 case SND_SOC_DAIFMT_IB_NF: 937 aif1 |= WM8900_REG_AUDIO1_BCLK_INV; 938 break; 939 default: 940 return -EINVAL; 941 } 942 break; 943 case SND_SOC_DAIFMT_I2S: 944 case SND_SOC_DAIFMT_RIGHT_J: 945 case SND_SOC_DAIFMT_LEFT_J: 946 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 947 case SND_SOC_DAIFMT_NB_NF: 948 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV; 949 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV; 950 break; 951 case SND_SOC_DAIFMT_IB_IF: 952 aif1 |= WM8900_REG_AUDIO1_BCLK_INV; 953 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV; 954 break; 955 case SND_SOC_DAIFMT_IB_NF: 956 aif1 |= WM8900_REG_AUDIO1_BCLK_INV; 957 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV; 958 break; 959 case SND_SOC_DAIFMT_NB_IF: 960 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV; 961 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV; 962 break; 963 default: 964 return -EINVAL; 965 } 966 break; 967 default: 968 return -EINVAL; 969 } 970 971 snd_soc_write(codec, WM8900_REG_CLOCKING1, clocking1); 972 snd_soc_write(codec, WM8900_REG_AUDIO1, aif1); 973 snd_soc_write(codec, WM8900_REG_AUDIO3, aif3); 974 snd_soc_write(codec, WM8900_REG_AUDIO4, aif4); 975 976 return 0; 977 } 978 979 static int wm8900_digital_mute(struct snd_soc_dai *codec_dai, int mute) 980 { 981 struct snd_soc_codec *codec = codec_dai->codec; 982 u16 reg; 983 984 reg = snd_soc_read(codec, WM8900_REG_DACCTRL); 985 986 if (mute) 987 reg |= WM8900_REG_DACCTRL_MUTE; 988 else 989 reg &= ~WM8900_REG_DACCTRL_MUTE; 990 991 snd_soc_write(codec, WM8900_REG_DACCTRL, reg); 992 993 return 0; 994 } 995 996 #define WM8900_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 997 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 998 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 999 1000 #define WM8900_PCM_FORMATS \ 1001 (SNDRV_PCM_FORMAT_S16_LE | SNDRV_PCM_FORMAT_S20_3LE | \ 1002 SNDRV_PCM_FORMAT_S24_LE) 1003 1004 static const struct snd_soc_dai_ops wm8900_dai_ops = { 1005 .hw_params = wm8900_hw_params, 1006 .set_clkdiv = wm8900_set_dai_clkdiv, 1007 .set_pll = wm8900_set_dai_pll, 1008 .set_fmt = wm8900_set_dai_fmt, 1009 .digital_mute = wm8900_digital_mute, 1010 }; 1011 1012 static struct snd_soc_dai_driver wm8900_dai = { 1013 .name = "wm8900-hifi", 1014 .playback = { 1015 .stream_name = "HiFi Playback", 1016 .channels_min = 1, 1017 .channels_max = 2, 1018 .rates = WM8900_RATES, 1019 .formats = WM8900_PCM_FORMATS, 1020 }, 1021 .capture = { 1022 .stream_name = "HiFi Capture", 1023 .channels_min = 1, 1024 .channels_max = 2, 1025 .rates = WM8900_RATES, 1026 .formats = WM8900_PCM_FORMATS, 1027 }, 1028 .ops = &wm8900_dai_ops, 1029 }; 1030 1031 static int wm8900_set_bias_level(struct snd_soc_codec *codec, 1032 enum snd_soc_bias_level level) 1033 { 1034 u16 reg; 1035 1036 switch (level) { 1037 case SND_SOC_BIAS_ON: 1038 /* Enable thermal shutdown */ 1039 snd_soc_update_bits(codec, WM8900_REG_GPIO, 1040 WM8900_REG_GPIO_TEMP_ENA, 1041 WM8900_REG_GPIO_TEMP_ENA); 1042 snd_soc_update_bits(codec, WM8900_REG_ADDCTL, 1043 WM8900_REG_ADDCTL_TEMP_SD, 1044 WM8900_REG_ADDCTL_TEMP_SD); 1045 break; 1046 1047 case SND_SOC_BIAS_PREPARE: 1048 break; 1049 1050 case SND_SOC_BIAS_STANDBY: 1051 /* Charge capacitors if initial power up */ 1052 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 1053 /* STARTUP_BIAS_ENA on */ 1054 snd_soc_write(codec, WM8900_REG_POWER1, 1055 WM8900_REG_POWER1_STARTUP_BIAS_ENA); 1056 1057 /* Startup bias mode */ 1058 snd_soc_write(codec, WM8900_REG_ADDCTL, 1059 WM8900_REG_ADDCTL_BIAS_SRC | 1060 WM8900_REG_ADDCTL_VMID_SOFTST); 1061 1062 /* VMID 2x50k */ 1063 snd_soc_write(codec, WM8900_REG_POWER1, 1064 WM8900_REG_POWER1_STARTUP_BIAS_ENA | 0x1); 1065 1066 /* Allow capacitors to charge */ 1067 schedule_timeout_interruptible(msecs_to_jiffies(400)); 1068 1069 /* Enable bias */ 1070 snd_soc_write(codec, WM8900_REG_POWER1, 1071 WM8900_REG_POWER1_STARTUP_BIAS_ENA | 1072 WM8900_REG_POWER1_BIAS_ENA | 0x1); 1073 1074 snd_soc_write(codec, WM8900_REG_ADDCTL, 0); 1075 1076 snd_soc_write(codec, WM8900_REG_POWER1, 1077 WM8900_REG_POWER1_BIAS_ENA | 0x1); 1078 } 1079 1080 reg = snd_soc_read(codec, WM8900_REG_POWER1); 1081 snd_soc_write(codec, WM8900_REG_POWER1, 1082 (reg & WM8900_REG_POWER1_FLL_ENA) | 1083 WM8900_REG_POWER1_BIAS_ENA | 0x1); 1084 snd_soc_write(codec, WM8900_REG_POWER2, 1085 WM8900_REG_POWER2_SYSCLK_ENA); 1086 snd_soc_write(codec, WM8900_REG_POWER3, 0); 1087 break; 1088 1089 case SND_SOC_BIAS_OFF: 1090 /* Startup bias enable */ 1091 reg = snd_soc_read(codec, WM8900_REG_POWER1); 1092 snd_soc_write(codec, WM8900_REG_POWER1, 1093 reg & WM8900_REG_POWER1_STARTUP_BIAS_ENA); 1094 snd_soc_write(codec, WM8900_REG_ADDCTL, 1095 WM8900_REG_ADDCTL_BIAS_SRC | 1096 WM8900_REG_ADDCTL_VMID_SOFTST); 1097 1098 /* Discharge caps */ 1099 snd_soc_write(codec, WM8900_REG_POWER1, 1100 WM8900_REG_POWER1_STARTUP_BIAS_ENA); 1101 schedule_timeout_interruptible(msecs_to_jiffies(500)); 1102 1103 /* Remove clamp */ 1104 snd_soc_write(codec, WM8900_REG_HPCTL1, 0); 1105 1106 /* Power down */ 1107 snd_soc_write(codec, WM8900_REG_ADDCTL, 0); 1108 snd_soc_write(codec, WM8900_REG_POWER1, 0); 1109 snd_soc_write(codec, WM8900_REG_POWER2, 0); 1110 snd_soc_write(codec, WM8900_REG_POWER3, 0); 1111 1112 /* Need to let things settle before stopping the clock 1113 * to ensure that restart works, see "Stopping the 1114 * master clock" in the datasheet. */ 1115 schedule_timeout_interruptible(msecs_to_jiffies(1)); 1116 snd_soc_write(codec, WM8900_REG_POWER2, 1117 WM8900_REG_POWER2_SYSCLK_ENA); 1118 break; 1119 } 1120 codec->dapm.bias_level = level; 1121 return 0; 1122 } 1123 1124 static int wm8900_suspend(struct snd_soc_codec *codec) 1125 { 1126 struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec); 1127 int fll_out = wm8900->fll_out; 1128 int fll_in = wm8900->fll_in; 1129 int ret; 1130 1131 /* Stop the FLL in an orderly fashion */ 1132 ret = wm8900_set_fll(codec, 0, 0, 0); 1133 if (ret != 0) { 1134 dev_err(codec->dev, "Failed to stop FLL\n"); 1135 return ret; 1136 } 1137 1138 wm8900->fll_out = fll_out; 1139 wm8900->fll_in = fll_in; 1140 1141 wm8900_set_bias_level(codec, SND_SOC_BIAS_OFF); 1142 1143 return 0; 1144 } 1145 1146 static int wm8900_resume(struct snd_soc_codec *codec) 1147 { 1148 struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec); 1149 int ret; 1150 1151 wm8900_reset(codec); 1152 1153 ret = regcache_sync(wm8900->regmap); 1154 if (ret != 0) { 1155 dev_err(codec->dev, "Failed to restore cache: %d\n", ret); 1156 return ret; 1157 } 1158 1159 wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 1160 1161 /* Restart the FLL? */ 1162 if (wm8900->fll_out) { 1163 int fll_out = wm8900->fll_out; 1164 int fll_in = wm8900->fll_in; 1165 1166 wm8900->fll_in = 0; 1167 wm8900->fll_out = 0; 1168 1169 ret = wm8900_set_fll(codec, 0, fll_in, fll_out); 1170 if (ret != 0) { 1171 dev_err(codec->dev, "Failed to restart FLL\n"); 1172 return ret; 1173 } 1174 } 1175 1176 return 0; 1177 } 1178 1179 static int wm8900_probe(struct snd_soc_codec *codec) 1180 { 1181 int reg; 1182 1183 reg = snd_soc_read(codec, WM8900_REG_ID); 1184 if (reg != 0x8900) { 1185 dev_err(codec->dev, "Device is not a WM8900 - ID %x\n", reg); 1186 return -ENODEV; 1187 } 1188 1189 wm8900_reset(codec); 1190 1191 /* Turn the chip on */ 1192 wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 1193 1194 /* Latch the volume update bits */ 1195 snd_soc_update_bits(codec, WM8900_REG_LINVOL, 0x100, 0x100); 1196 snd_soc_update_bits(codec, WM8900_REG_RINVOL, 0x100, 0x100); 1197 snd_soc_update_bits(codec, WM8900_REG_LOUT1CTL, 0x100, 0x100); 1198 snd_soc_update_bits(codec, WM8900_REG_ROUT1CTL, 0x100, 0x100); 1199 snd_soc_update_bits(codec, WM8900_REG_LOUT2CTL, 0x100, 0x100); 1200 snd_soc_update_bits(codec, WM8900_REG_ROUT2CTL, 0x100, 0x100); 1201 snd_soc_update_bits(codec, WM8900_REG_LDAC_DV, 0x100, 0x100); 1202 snd_soc_update_bits(codec, WM8900_REG_RDAC_DV, 0x100, 0x100); 1203 snd_soc_update_bits(codec, WM8900_REG_LADC_DV, 0x100, 0x100); 1204 snd_soc_update_bits(codec, WM8900_REG_RADC_DV, 0x100, 0x100); 1205 1206 /* Set the DAC and mixer output bias */ 1207 snd_soc_write(codec, WM8900_REG_OUTBIASCTL, 0x81); 1208 1209 return 0; 1210 } 1211 1212 static struct snd_soc_codec_driver soc_codec_dev_wm8900 = { 1213 .probe = wm8900_probe, 1214 .suspend = wm8900_suspend, 1215 .resume = wm8900_resume, 1216 .set_bias_level = wm8900_set_bias_level, 1217 1218 .controls = wm8900_snd_controls, 1219 .num_controls = ARRAY_SIZE(wm8900_snd_controls), 1220 .dapm_widgets = wm8900_dapm_widgets, 1221 .num_dapm_widgets = ARRAY_SIZE(wm8900_dapm_widgets), 1222 .dapm_routes = wm8900_dapm_routes, 1223 .num_dapm_routes = ARRAY_SIZE(wm8900_dapm_routes), 1224 }; 1225 1226 static const struct regmap_config wm8900_regmap = { 1227 .reg_bits = 8, 1228 .val_bits = 16, 1229 .max_register = WM8900_MAXREG, 1230 1231 .reg_defaults = wm8900_reg_defaults, 1232 .num_reg_defaults = ARRAY_SIZE(wm8900_reg_defaults), 1233 .cache_type = REGCACHE_RBTREE, 1234 1235 .volatile_reg = wm8900_volatile_register, 1236 }; 1237 1238 #if defined(CONFIG_SPI_MASTER) 1239 static int wm8900_spi_probe(struct spi_device *spi) 1240 { 1241 struct wm8900_priv *wm8900; 1242 int ret; 1243 1244 wm8900 = devm_kzalloc(&spi->dev, sizeof(struct wm8900_priv), 1245 GFP_KERNEL); 1246 if (wm8900 == NULL) 1247 return -ENOMEM; 1248 1249 wm8900->regmap = devm_regmap_init_spi(spi, &wm8900_regmap); 1250 if (IS_ERR(wm8900->regmap)) 1251 return PTR_ERR(wm8900->regmap); 1252 1253 spi_set_drvdata(spi, wm8900); 1254 1255 ret = snd_soc_register_codec(&spi->dev, 1256 &soc_codec_dev_wm8900, &wm8900_dai, 1); 1257 1258 return ret; 1259 } 1260 1261 static int wm8900_spi_remove(struct spi_device *spi) 1262 { 1263 snd_soc_unregister_codec(&spi->dev); 1264 return 0; 1265 } 1266 1267 static struct spi_driver wm8900_spi_driver = { 1268 .driver = { 1269 .name = "wm8900", 1270 .owner = THIS_MODULE, 1271 }, 1272 .probe = wm8900_spi_probe, 1273 .remove = wm8900_spi_remove, 1274 }; 1275 #endif /* CONFIG_SPI_MASTER */ 1276 1277 #if IS_ENABLED(CONFIG_I2C) 1278 static int wm8900_i2c_probe(struct i2c_client *i2c, 1279 const struct i2c_device_id *id) 1280 { 1281 struct wm8900_priv *wm8900; 1282 int ret; 1283 1284 wm8900 = devm_kzalloc(&i2c->dev, sizeof(struct wm8900_priv), 1285 GFP_KERNEL); 1286 if (wm8900 == NULL) 1287 return -ENOMEM; 1288 1289 wm8900->regmap = devm_regmap_init_i2c(i2c, &wm8900_regmap); 1290 if (IS_ERR(wm8900->regmap)) 1291 return PTR_ERR(wm8900->regmap); 1292 1293 i2c_set_clientdata(i2c, wm8900); 1294 1295 ret = snd_soc_register_codec(&i2c->dev, 1296 &soc_codec_dev_wm8900, &wm8900_dai, 1); 1297 1298 return ret; 1299 } 1300 1301 static int wm8900_i2c_remove(struct i2c_client *client) 1302 { 1303 snd_soc_unregister_codec(&client->dev); 1304 return 0; 1305 } 1306 1307 static const struct i2c_device_id wm8900_i2c_id[] = { 1308 { "wm8900", 0 }, 1309 { } 1310 }; 1311 MODULE_DEVICE_TABLE(i2c, wm8900_i2c_id); 1312 1313 static struct i2c_driver wm8900_i2c_driver = { 1314 .driver = { 1315 .name = "wm8900", 1316 .owner = THIS_MODULE, 1317 }, 1318 .probe = wm8900_i2c_probe, 1319 .remove = wm8900_i2c_remove, 1320 .id_table = wm8900_i2c_id, 1321 }; 1322 #endif 1323 1324 static int __init wm8900_modinit(void) 1325 { 1326 int ret = 0; 1327 #if IS_ENABLED(CONFIG_I2C) 1328 ret = i2c_add_driver(&wm8900_i2c_driver); 1329 if (ret != 0) { 1330 printk(KERN_ERR "Failed to register wm8900 I2C driver: %d\n", 1331 ret); 1332 } 1333 #endif 1334 #if defined(CONFIG_SPI_MASTER) 1335 ret = spi_register_driver(&wm8900_spi_driver); 1336 if (ret != 0) { 1337 printk(KERN_ERR "Failed to register wm8900 SPI driver: %d\n", 1338 ret); 1339 } 1340 #endif 1341 return ret; 1342 } 1343 module_init(wm8900_modinit); 1344 1345 static void __exit wm8900_exit(void) 1346 { 1347 #if IS_ENABLED(CONFIG_I2C) 1348 i2c_del_driver(&wm8900_i2c_driver); 1349 #endif 1350 #if defined(CONFIG_SPI_MASTER) 1351 spi_unregister_driver(&wm8900_spi_driver); 1352 #endif 1353 } 1354 module_exit(wm8900_exit); 1355 1356 MODULE_DESCRIPTION("ASoC WM8900 driver"); 1357 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>"); 1358 MODULE_LICENSE("GPL"); 1359