1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * wm8900.c -- WM8900 ALSA Soc Audio driver 4 * 5 * Copyright 2007, 2008 Wolfson Microelectronics PLC. 6 * 7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> 8 * 9 * TODO: 10 * - Tristating. 11 * - TDM. 12 * - Jack detect. 13 * - FLL source configuration, currently only MCLK is supported. 14 */ 15 16 #include <linux/module.h> 17 #include <linux/moduleparam.h> 18 #include <linux/kernel.h> 19 #include <linux/init.h> 20 #include <linux/delay.h> 21 #include <linux/pm.h> 22 #include <linux/i2c.h> 23 #include <linux/regmap.h> 24 #include <linux/spi/spi.h> 25 #include <linux/slab.h> 26 #include <sound/core.h> 27 #include <sound/pcm.h> 28 #include <sound/pcm_params.h> 29 #include <sound/soc.h> 30 #include <sound/initval.h> 31 #include <sound/tlv.h> 32 33 #include "wm8900.h" 34 35 /* WM8900 register space */ 36 #define WM8900_REG_RESET 0x0 37 #define WM8900_REG_ID 0x0 38 #define WM8900_REG_POWER1 0x1 39 #define WM8900_REG_POWER2 0x2 40 #define WM8900_REG_POWER3 0x3 41 #define WM8900_REG_AUDIO1 0x4 42 #define WM8900_REG_AUDIO2 0x5 43 #define WM8900_REG_CLOCKING1 0x6 44 #define WM8900_REG_CLOCKING2 0x7 45 #define WM8900_REG_AUDIO3 0x8 46 #define WM8900_REG_AUDIO4 0x9 47 #define WM8900_REG_DACCTRL 0xa 48 #define WM8900_REG_LDAC_DV 0xb 49 #define WM8900_REG_RDAC_DV 0xc 50 #define WM8900_REG_SIDETONE 0xd 51 #define WM8900_REG_ADCCTRL 0xe 52 #define WM8900_REG_LADC_DV 0xf 53 #define WM8900_REG_RADC_DV 0x10 54 #define WM8900_REG_GPIO 0x12 55 #define WM8900_REG_INCTL 0x15 56 #define WM8900_REG_LINVOL 0x16 57 #define WM8900_REG_RINVOL 0x17 58 #define WM8900_REG_INBOOSTMIX1 0x18 59 #define WM8900_REG_INBOOSTMIX2 0x19 60 #define WM8900_REG_ADCPATH 0x1a 61 #define WM8900_REG_AUXBOOST 0x1b 62 #define WM8900_REG_ADDCTL 0x1e 63 #define WM8900_REG_FLLCTL1 0x24 64 #define WM8900_REG_FLLCTL2 0x25 65 #define WM8900_REG_FLLCTL3 0x26 66 #define WM8900_REG_FLLCTL4 0x27 67 #define WM8900_REG_FLLCTL5 0x28 68 #define WM8900_REG_FLLCTL6 0x29 69 #define WM8900_REG_LOUTMIXCTL1 0x2c 70 #define WM8900_REG_ROUTMIXCTL1 0x2d 71 #define WM8900_REG_BYPASS1 0x2e 72 #define WM8900_REG_BYPASS2 0x2f 73 #define WM8900_REG_AUXOUT_CTL 0x30 74 #define WM8900_REG_LOUT1CTL 0x33 75 #define WM8900_REG_ROUT1CTL 0x34 76 #define WM8900_REG_LOUT2CTL 0x35 77 #define WM8900_REG_ROUT2CTL 0x36 78 #define WM8900_REG_HPCTL1 0x3a 79 #define WM8900_REG_OUTBIASCTL 0x73 80 81 #define WM8900_MAXREG 0x80 82 83 #define WM8900_REG_ADDCTL_OUT1_DIS 0x80 84 #define WM8900_REG_ADDCTL_OUT2_DIS 0x40 85 #define WM8900_REG_ADDCTL_VMID_DIS 0x20 86 #define WM8900_REG_ADDCTL_BIAS_SRC 0x10 87 #define WM8900_REG_ADDCTL_VMID_SOFTST 0x04 88 #define WM8900_REG_ADDCTL_TEMP_SD 0x02 89 90 #define WM8900_REG_GPIO_TEMP_ENA 0x2 91 92 #define WM8900_REG_POWER1_STARTUP_BIAS_ENA 0x0100 93 #define WM8900_REG_POWER1_BIAS_ENA 0x0008 94 #define WM8900_REG_POWER1_VMID_BUF_ENA 0x0004 95 #define WM8900_REG_POWER1_FLL_ENA 0x0040 96 97 #define WM8900_REG_POWER2_SYSCLK_ENA 0x8000 98 #define WM8900_REG_POWER2_ADCL_ENA 0x0002 99 #define WM8900_REG_POWER2_ADCR_ENA 0x0001 100 101 #define WM8900_REG_POWER3_DACL_ENA 0x0002 102 #define WM8900_REG_POWER3_DACR_ENA 0x0001 103 104 #define WM8900_REG_AUDIO1_AIF_FMT_MASK 0x0018 105 #define WM8900_REG_AUDIO1_LRCLK_INV 0x0080 106 #define WM8900_REG_AUDIO1_BCLK_INV 0x0100 107 108 #define WM8900_REG_CLOCKING1_BCLK_DIR 0x1 109 #define WM8900_REG_CLOCKING1_MCLK_SRC 0x100 110 #define WM8900_REG_CLOCKING1_BCLK_MASK 0x01e 111 #define WM8900_REG_CLOCKING1_OPCLK_MASK 0x7000 112 113 #define WM8900_REG_CLOCKING2_ADC_CLKDIV 0xe0 114 #define WM8900_REG_CLOCKING2_DAC_CLKDIV 0x1c 115 116 #define WM8900_REG_DACCTRL_MUTE 0x004 117 #define WM8900_REG_DACCTRL_DAC_SB_FILT 0x100 118 #define WM8900_REG_DACCTRL_AIF_LRCLKRATE 0x400 119 120 #define WM8900_REG_AUDIO3_ADCLRC_DIR 0x0800 121 122 #define WM8900_REG_AUDIO4_DACLRC_DIR 0x0800 123 124 #define WM8900_REG_FLLCTL1_OSC_ENA 0x100 125 126 #define WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF 0x100 127 128 #define WM8900_REG_HPCTL1_HP_IPSTAGE_ENA 0x80 129 #define WM8900_REG_HPCTL1_HP_OPSTAGE_ENA 0x40 130 #define WM8900_REG_HPCTL1_HP_CLAMP_IP 0x20 131 #define WM8900_REG_HPCTL1_HP_CLAMP_OP 0x10 132 #define WM8900_REG_HPCTL1_HP_SHORT 0x08 133 #define WM8900_REG_HPCTL1_HP_SHORT2 0x04 134 135 #define WM8900_LRC_MASK 0x03ff 136 137 struct wm8900_priv { 138 struct regmap *regmap; 139 140 u32 fll_in; /* FLL input frequency */ 141 u32 fll_out; /* FLL output frequency */ 142 }; 143 144 /* 145 * wm8900 register cache. We can't read the entire register space and we 146 * have slow control buses so we cache the registers. 147 */ 148 static const struct reg_default wm8900_reg_defaults[] = { 149 { 1, 0x0000 }, 150 { 2, 0xc000 }, 151 { 3, 0x0000 }, 152 { 4, 0x4050 }, 153 { 5, 0x4000 }, 154 { 6, 0x0008 }, 155 { 7, 0x0000 }, 156 { 8, 0x0040 }, 157 { 9, 0x0040 }, 158 { 10, 0x1004 }, 159 { 11, 0x00c0 }, 160 { 12, 0x00c0 }, 161 { 13, 0x0000 }, 162 { 14, 0x0100 }, 163 { 15, 0x00c0 }, 164 { 16, 0x00c0 }, 165 { 17, 0x0000 }, 166 { 18, 0xb001 }, 167 { 19, 0x0000 }, 168 { 20, 0x0000 }, 169 { 21, 0x0044 }, 170 { 22, 0x004c }, 171 { 23, 0x004c }, 172 { 24, 0x0044 }, 173 { 25, 0x0044 }, 174 { 26, 0x0000 }, 175 { 27, 0x0044 }, 176 { 28, 0x0000 }, 177 { 29, 0x0000 }, 178 { 30, 0x0002 }, 179 { 31, 0x0000 }, 180 { 32, 0x0000 }, 181 { 33, 0x0000 }, 182 { 34, 0x0000 }, 183 { 35, 0x0000 }, 184 { 36, 0x0008 }, 185 { 37, 0x0000 }, 186 { 38, 0x0000 }, 187 { 39, 0x0008 }, 188 { 40, 0x0097 }, 189 { 41, 0x0100 }, 190 { 42, 0x0000 }, 191 { 43, 0x0000 }, 192 { 44, 0x0050 }, 193 { 45, 0x0050 }, 194 { 46, 0x0055 }, 195 { 47, 0x0055 }, 196 { 48, 0x0055 }, 197 { 49, 0x0000 }, 198 { 50, 0x0000 }, 199 { 51, 0x0079 }, 200 { 52, 0x0079 }, 201 { 53, 0x0079 }, 202 { 54, 0x0079 }, 203 { 55, 0x0000 }, 204 }; 205 206 static bool wm8900_volatile_register(struct device *dev, unsigned int reg) 207 { 208 switch (reg) { 209 case WM8900_REG_ID: 210 return true; 211 default: 212 return false; 213 } 214 } 215 216 static void wm8900_reset(struct snd_soc_component *component) 217 { 218 snd_soc_component_write(component, WM8900_REG_RESET, 0); 219 } 220 221 static int wm8900_hp_event(struct snd_soc_dapm_widget *w, 222 struct snd_kcontrol *kcontrol, int event) 223 { 224 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 225 u16 hpctl1 = snd_soc_component_read(component, WM8900_REG_HPCTL1); 226 227 switch (event) { 228 case SND_SOC_DAPM_PRE_PMU: 229 /* Clamp headphone outputs */ 230 hpctl1 = WM8900_REG_HPCTL1_HP_CLAMP_IP | 231 WM8900_REG_HPCTL1_HP_CLAMP_OP; 232 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); 233 break; 234 235 case SND_SOC_DAPM_POST_PMU: 236 /* Enable the input stage */ 237 hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_IP; 238 hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT | 239 WM8900_REG_HPCTL1_HP_SHORT2 | 240 WM8900_REG_HPCTL1_HP_IPSTAGE_ENA; 241 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); 242 243 msleep(400); 244 245 /* Enable the output stage */ 246 hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_OP; 247 hpctl1 |= WM8900_REG_HPCTL1_HP_OPSTAGE_ENA; 248 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); 249 250 /* Remove the shorts */ 251 hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT2; 252 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); 253 hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT; 254 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); 255 break; 256 257 case SND_SOC_DAPM_PRE_PMD: 258 /* Short the output */ 259 hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT; 260 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); 261 262 /* Disable the output stage */ 263 hpctl1 &= ~WM8900_REG_HPCTL1_HP_OPSTAGE_ENA; 264 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); 265 266 /* Clamp the outputs and power down input */ 267 hpctl1 |= WM8900_REG_HPCTL1_HP_CLAMP_IP | 268 WM8900_REG_HPCTL1_HP_CLAMP_OP; 269 hpctl1 &= ~WM8900_REG_HPCTL1_HP_IPSTAGE_ENA; 270 snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); 271 break; 272 273 case SND_SOC_DAPM_POST_PMD: 274 /* Disable everything */ 275 snd_soc_component_write(component, WM8900_REG_HPCTL1, 0); 276 break; 277 278 default: 279 WARN(1, "Invalid event %d\n", event); 280 break; 281 } 282 283 return 0; 284 } 285 286 static const DECLARE_TLV_DB_SCALE(out_pga_tlv, -5700, 100, 0); 287 288 static const DECLARE_TLV_DB_SCALE(out_mix_tlv, -1500, 300, 0); 289 290 static const DECLARE_TLV_DB_SCALE(in_boost_tlv, -1200, 600, 0); 291 292 static const DECLARE_TLV_DB_SCALE(in_pga_tlv, -1200, 100, 0); 293 294 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0); 295 296 static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1); 297 298 static const DECLARE_TLV_DB_SCALE(adc_svol_tlv, -3600, 300, 0); 299 300 static const DECLARE_TLV_DB_SCALE(adc_tlv, -7200, 75, 1); 301 302 static const char *mic_bias_level_txt[] = { "0.9*AVDD", "0.65*AVDD" }; 303 304 static SOC_ENUM_SINGLE_DECL(mic_bias_level, 305 WM8900_REG_INCTL, 8, mic_bias_level_txt); 306 307 static const char *dac_mute_rate_txt[] = { "Fast", "Slow" }; 308 309 static SOC_ENUM_SINGLE_DECL(dac_mute_rate, 310 WM8900_REG_DACCTRL, 7, dac_mute_rate_txt); 311 312 static const char *dac_deemphasis_txt[] = { 313 "Disabled", "32kHz", "44.1kHz", "48kHz" 314 }; 315 316 static SOC_ENUM_SINGLE_DECL(dac_deemphasis, 317 WM8900_REG_DACCTRL, 4, dac_deemphasis_txt); 318 319 static const char *adc_hpf_cut_txt[] = { 320 "Hi-fi mode", "Voice mode 1", "Voice mode 2", "Voice mode 3" 321 }; 322 323 static SOC_ENUM_SINGLE_DECL(adc_hpf_cut, 324 WM8900_REG_ADCCTRL, 5, adc_hpf_cut_txt); 325 326 static const char *lr_txt[] = { 327 "Left", "Right" 328 }; 329 330 static SOC_ENUM_SINGLE_DECL(aifl_src, 331 WM8900_REG_AUDIO1, 15, lr_txt); 332 333 static SOC_ENUM_SINGLE_DECL(aifr_src, 334 WM8900_REG_AUDIO1, 14, lr_txt); 335 336 static SOC_ENUM_SINGLE_DECL(dacl_src, 337 WM8900_REG_AUDIO2, 15, lr_txt); 338 339 static SOC_ENUM_SINGLE_DECL(dacr_src, 340 WM8900_REG_AUDIO2, 14, lr_txt); 341 342 static const char *sidetone_txt[] = { 343 "Disabled", "Left ADC", "Right ADC" 344 }; 345 346 static SOC_ENUM_SINGLE_DECL(dacl_sidetone, 347 WM8900_REG_SIDETONE, 2, sidetone_txt); 348 349 static SOC_ENUM_SINGLE_DECL(dacr_sidetone, 350 WM8900_REG_SIDETONE, 0, sidetone_txt); 351 352 static const struct snd_kcontrol_new wm8900_snd_controls[] = { 353 SOC_ENUM("Mic Bias Level", mic_bias_level), 354 355 SOC_SINGLE_TLV("Left Input PGA Volume", WM8900_REG_LINVOL, 0, 31, 0, 356 in_pga_tlv), 357 SOC_SINGLE("Left Input PGA Switch", WM8900_REG_LINVOL, 6, 1, 1), 358 SOC_SINGLE("Left Input PGA ZC Switch", WM8900_REG_LINVOL, 7, 1, 0), 359 360 SOC_SINGLE_TLV("Right Input PGA Volume", WM8900_REG_RINVOL, 0, 31, 0, 361 in_pga_tlv), 362 SOC_SINGLE("Right Input PGA Switch", WM8900_REG_RINVOL, 6, 1, 1), 363 SOC_SINGLE("Right Input PGA ZC Switch", WM8900_REG_RINVOL, 7, 1, 0), 364 365 SOC_SINGLE("DAC Soft Mute Switch", WM8900_REG_DACCTRL, 6, 1, 1), 366 SOC_ENUM("DAC Mute Rate", dac_mute_rate), 367 SOC_SINGLE("DAC Mono Switch", WM8900_REG_DACCTRL, 9, 1, 0), 368 SOC_ENUM("DAC Deemphasis", dac_deemphasis), 369 SOC_SINGLE("DAC Sigma-Delta Modulator Clock Switch", WM8900_REG_DACCTRL, 370 12, 1, 0), 371 372 SOC_SINGLE("ADC HPF Switch", WM8900_REG_ADCCTRL, 8, 1, 0), 373 SOC_ENUM("ADC HPF Cut-Off", adc_hpf_cut), 374 SOC_DOUBLE("ADC Invert Switch", WM8900_REG_ADCCTRL, 1, 0, 1, 0), 375 SOC_SINGLE_TLV("Left ADC Sidetone Volume", WM8900_REG_SIDETONE, 9, 12, 0, 376 adc_svol_tlv), 377 SOC_SINGLE_TLV("Right ADC Sidetone Volume", WM8900_REG_SIDETONE, 5, 12, 0, 378 adc_svol_tlv), 379 SOC_ENUM("Left Digital Audio Source", aifl_src), 380 SOC_ENUM("Right Digital Audio Source", aifr_src), 381 382 SOC_SINGLE_TLV("DAC Input Boost Volume", WM8900_REG_AUDIO2, 10, 4, 0, 383 dac_boost_tlv), 384 SOC_ENUM("Left DAC Source", dacl_src), 385 SOC_ENUM("Right DAC Source", dacr_src), 386 SOC_ENUM("Left DAC Sidetone", dacl_sidetone), 387 SOC_ENUM("Right DAC Sidetone", dacr_sidetone), 388 SOC_DOUBLE("DAC Invert Switch", WM8900_REG_DACCTRL, 1, 0, 1, 0), 389 390 SOC_DOUBLE_R_TLV("Digital Playback Volume", 391 WM8900_REG_LDAC_DV, WM8900_REG_RDAC_DV, 392 1, 96, 0, dac_tlv), 393 SOC_DOUBLE_R_TLV("Digital Capture Volume", 394 WM8900_REG_LADC_DV, WM8900_REG_RADC_DV, 1, 119, 0, adc_tlv), 395 396 SOC_SINGLE_TLV("LINPUT3 Bypass Volume", WM8900_REG_LOUTMIXCTL1, 4, 7, 0, 397 out_mix_tlv), 398 SOC_SINGLE_TLV("RINPUT3 Bypass Volume", WM8900_REG_ROUTMIXCTL1, 4, 7, 0, 399 out_mix_tlv), 400 SOC_SINGLE_TLV("Left AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 4, 7, 0, 401 out_mix_tlv), 402 SOC_SINGLE_TLV("Right AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 0, 7, 0, 403 out_mix_tlv), 404 405 SOC_SINGLE_TLV("LeftIn to RightOut Mixer Volume", WM8900_REG_BYPASS1, 0, 7, 0, 406 out_mix_tlv), 407 SOC_SINGLE_TLV("LeftIn to LeftOut Mixer Volume", WM8900_REG_BYPASS1, 4, 7, 0, 408 out_mix_tlv), 409 SOC_SINGLE_TLV("RightIn to LeftOut Mixer Volume", WM8900_REG_BYPASS2, 0, 7, 0, 410 out_mix_tlv), 411 SOC_SINGLE_TLV("RightIn to RightOut Mixer Volume", WM8900_REG_BYPASS2, 4, 7, 0, 412 out_mix_tlv), 413 414 SOC_SINGLE_TLV("IN2L Boost Volume", WM8900_REG_INBOOSTMIX1, 0, 3, 0, 415 in_boost_tlv), 416 SOC_SINGLE_TLV("IN3L Boost Volume", WM8900_REG_INBOOSTMIX1, 4, 3, 0, 417 in_boost_tlv), 418 SOC_SINGLE_TLV("IN2R Boost Volume", WM8900_REG_INBOOSTMIX2, 0, 3, 0, 419 in_boost_tlv), 420 SOC_SINGLE_TLV("IN3R Boost Volume", WM8900_REG_INBOOSTMIX2, 4, 3, 0, 421 in_boost_tlv), 422 SOC_SINGLE_TLV("Left AUX Boost Volume", WM8900_REG_AUXBOOST, 4, 3, 0, 423 in_boost_tlv), 424 SOC_SINGLE_TLV("Right AUX Boost Volume", WM8900_REG_AUXBOOST, 0, 3, 0, 425 in_boost_tlv), 426 427 SOC_DOUBLE_R_TLV("LINEOUT1 Volume", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL, 428 0, 63, 0, out_pga_tlv), 429 SOC_DOUBLE_R("LINEOUT1 Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL, 430 6, 1, 1), 431 SOC_DOUBLE_R("LINEOUT1 ZC Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL, 432 7, 1, 0), 433 434 SOC_DOUBLE_R_TLV("LINEOUT2 Volume", 435 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 436 0, 63, 0, out_pga_tlv), 437 SOC_DOUBLE_R("LINEOUT2 Switch", 438 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 6, 1, 1), 439 SOC_DOUBLE_R("LINEOUT2 ZC Switch", 440 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 7, 1, 0), 441 SOC_SINGLE("LINEOUT2 LP -12dB", WM8900_REG_LOUTMIXCTL1, 442 0, 1, 1), 443 444 }; 445 446 static const struct snd_kcontrol_new wm8900_loutmix_controls[] = { 447 SOC_DAPM_SINGLE("LINPUT3 Bypass Switch", WM8900_REG_LOUTMIXCTL1, 7, 1, 0), 448 SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 7, 1, 0), 449 SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 7, 1, 0), 450 SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 3, 1, 0), 451 SOC_DAPM_SINGLE("DACL Switch", WM8900_REG_LOUTMIXCTL1, 8, 1, 0), 452 }; 453 454 static const struct snd_kcontrol_new wm8900_routmix_controls[] = { 455 SOC_DAPM_SINGLE("RINPUT3 Bypass Switch", WM8900_REG_ROUTMIXCTL1, 7, 1, 0), 456 SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 3, 1, 0), 457 SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 3, 1, 0), 458 SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 7, 1, 0), 459 SOC_DAPM_SINGLE("DACR Switch", WM8900_REG_ROUTMIXCTL1, 8, 1, 0), 460 }; 461 462 static const struct snd_kcontrol_new wm8900_linmix_controls[] = { 463 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INBOOSTMIX1, 2, 1, 1), 464 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INBOOSTMIX1, 6, 1, 1), 465 SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 6, 1, 1), 466 SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 6, 1, 0), 467 }; 468 469 static const struct snd_kcontrol_new wm8900_rinmix_controls[] = { 470 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INBOOSTMIX2, 2, 1, 1), 471 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INBOOSTMIX2, 6, 1, 1), 472 SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 2, 1, 1), 473 SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 2, 1, 0), 474 }; 475 476 static const struct snd_kcontrol_new wm8900_linpga_controls[] = { 477 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8900_REG_INCTL, 6, 1, 0), 478 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INCTL, 5, 1, 0), 479 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INCTL, 4, 1, 0), 480 }; 481 482 static const struct snd_kcontrol_new wm8900_rinpga_controls[] = { 483 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8900_REG_INCTL, 2, 1, 0), 484 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INCTL, 1, 1, 0), 485 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INCTL, 0, 1, 0), 486 }; 487 488 static const char *wm8900_lp_mux[] = { "Disabled", "Enabled" }; 489 490 static SOC_ENUM_SINGLE_DECL(wm8900_lineout2_lp_mux, 491 WM8900_REG_LOUTMIXCTL1, 1, wm8900_lp_mux); 492 493 static const struct snd_kcontrol_new wm8900_lineout2_lp = 494 SOC_DAPM_ENUM("Route", wm8900_lineout2_lp_mux); 495 496 static const struct snd_soc_dapm_widget wm8900_dapm_widgets[] = { 497 498 /* Externally visible pins */ 499 SND_SOC_DAPM_OUTPUT("LINEOUT1L"), 500 SND_SOC_DAPM_OUTPUT("LINEOUT1R"), 501 SND_SOC_DAPM_OUTPUT("LINEOUT2L"), 502 SND_SOC_DAPM_OUTPUT("LINEOUT2R"), 503 SND_SOC_DAPM_OUTPUT("HP_L"), 504 SND_SOC_DAPM_OUTPUT("HP_R"), 505 506 SND_SOC_DAPM_INPUT("RINPUT1"), 507 SND_SOC_DAPM_INPUT("LINPUT1"), 508 SND_SOC_DAPM_INPUT("RINPUT2"), 509 SND_SOC_DAPM_INPUT("LINPUT2"), 510 SND_SOC_DAPM_INPUT("RINPUT3"), 511 SND_SOC_DAPM_INPUT("LINPUT3"), 512 SND_SOC_DAPM_INPUT("AUX"), 513 514 SND_SOC_DAPM_VMID("VMID"), 515 516 /* Input */ 517 SND_SOC_DAPM_MIXER("Left Input PGA", WM8900_REG_POWER2, 3, 0, 518 wm8900_linpga_controls, 519 ARRAY_SIZE(wm8900_linpga_controls)), 520 SND_SOC_DAPM_MIXER("Right Input PGA", WM8900_REG_POWER2, 2, 0, 521 wm8900_rinpga_controls, 522 ARRAY_SIZE(wm8900_rinpga_controls)), 523 524 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8900_REG_POWER2, 5, 0, 525 wm8900_linmix_controls, 526 ARRAY_SIZE(wm8900_linmix_controls)), 527 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8900_REG_POWER2, 4, 0, 528 wm8900_rinmix_controls, 529 ARRAY_SIZE(wm8900_rinmix_controls)), 530 531 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8900_REG_POWER1, 4, 0, NULL, 0), 532 533 SND_SOC_DAPM_ADC("ADCL", "Left HiFi Capture", WM8900_REG_POWER2, 1, 0), 534 SND_SOC_DAPM_ADC("ADCR", "Right HiFi Capture", WM8900_REG_POWER2, 0, 0), 535 536 /* Output */ 537 SND_SOC_DAPM_DAC("DACL", "Left HiFi Playback", WM8900_REG_POWER3, 1, 0), 538 SND_SOC_DAPM_DAC("DACR", "Right HiFi Playback", WM8900_REG_POWER3, 0, 0), 539 540 SND_SOC_DAPM_PGA_E("Headphone Amplifier", WM8900_REG_POWER3, 7, 0, NULL, 0, 541 wm8900_hp_event, 542 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU | 543 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD), 544 545 SND_SOC_DAPM_PGA("LINEOUT1L PGA", WM8900_REG_POWER2, 8, 0, NULL, 0), 546 SND_SOC_DAPM_PGA("LINEOUT1R PGA", WM8900_REG_POWER2, 7, 0, NULL, 0), 547 548 SND_SOC_DAPM_MUX("LINEOUT2 LP", SND_SOC_NOPM, 0, 0, &wm8900_lineout2_lp), 549 SND_SOC_DAPM_PGA("LINEOUT2L PGA", WM8900_REG_POWER3, 6, 0, NULL, 0), 550 SND_SOC_DAPM_PGA("LINEOUT2R PGA", WM8900_REG_POWER3, 5, 0, NULL, 0), 551 552 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8900_REG_POWER3, 3, 0, 553 wm8900_loutmix_controls, 554 ARRAY_SIZE(wm8900_loutmix_controls)), 555 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8900_REG_POWER3, 2, 0, 556 wm8900_routmix_controls, 557 ARRAY_SIZE(wm8900_routmix_controls)), 558 }; 559 560 /* Target, Path, Source */ 561 static const struct snd_soc_dapm_route wm8900_dapm_routes[] = { 562 /* Inputs */ 563 {"Left Input PGA", "LINPUT1 Switch", "LINPUT1"}, 564 {"Left Input PGA", "LINPUT2 Switch", "LINPUT2"}, 565 {"Left Input PGA", "LINPUT3 Switch", "LINPUT3"}, 566 567 {"Right Input PGA", "RINPUT1 Switch", "RINPUT1"}, 568 {"Right Input PGA", "RINPUT2 Switch", "RINPUT2"}, 569 {"Right Input PGA", "RINPUT3 Switch", "RINPUT3"}, 570 571 {"Left Input Mixer", "LINPUT2 Switch", "LINPUT2"}, 572 {"Left Input Mixer", "LINPUT3 Switch", "LINPUT3"}, 573 {"Left Input Mixer", "AUX Switch", "AUX"}, 574 {"Left Input Mixer", "Input PGA Switch", "Left Input PGA"}, 575 576 {"Right Input Mixer", "RINPUT2 Switch", "RINPUT2"}, 577 {"Right Input Mixer", "RINPUT3 Switch", "RINPUT3"}, 578 {"Right Input Mixer", "AUX Switch", "AUX"}, 579 {"Right Input Mixer", "Input PGA Switch", "Right Input PGA"}, 580 581 {"ADCL", NULL, "Left Input Mixer"}, 582 {"ADCR", NULL, "Right Input Mixer"}, 583 584 /* Outputs */ 585 {"LINEOUT1L", NULL, "LINEOUT1L PGA"}, 586 {"LINEOUT1L PGA", NULL, "Left Output Mixer"}, 587 {"LINEOUT1R", NULL, "LINEOUT1R PGA"}, 588 {"LINEOUT1R PGA", NULL, "Right Output Mixer"}, 589 590 {"LINEOUT2L PGA", NULL, "Left Output Mixer"}, 591 {"LINEOUT2 LP", "Disabled", "LINEOUT2L PGA"}, 592 {"LINEOUT2 LP", "Enabled", "Left Output Mixer"}, 593 {"LINEOUT2L", NULL, "LINEOUT2 LP"}, 594 595 {"LINEOUT2R PGA", NULL, "Right Output Mixer"}, 596 {"LINEOUT2 LP", "Disabled", "LINEOUT2R PGA"}, 597 {"LINEOUT2 LP", "Enabled", "Right Output Mixer"}, 598 {"LINEOUT2R", NULL, "LINEOUT2 LP"}, 599 600 {"Left Output Mixer", "LINPUT3 Bypass Switch", "LINPUT3"}, 601 {"Left Output Mixer", "AUX Bypass Switch", "AUX"}, 602 {"Left Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"}, 603 {"Left Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"}, 604 {"Left Output Mixer", "DACL Switch", "DACL"}, 605 606 {"Right Output Mixer", "RINPUT3 Bypass Switch", "RINPUT3"}, 607 {"Right Output Mixer", "AUX Bypass Switch", "AUX"}, 608 {"Right Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"}, 609 {"Right Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"}, 610 {"Right Output Mixer", "DACR Switch", "DACR"}, 611 612 /* Note that the headphone output stage needs to be connected 613 * externally to LINEOUT2 via DC blocking capacitors. Other 614 * configurations are not supported. 615 * 616 * Note also that left and right headphone paths are treated as a 617 * mono path. 618 */ 619 {"Headphone Amplifier", NULL, "LINEOUT2 LP"}, 620 {"Headphone Amplifier", NULL, "LINEOUT2 LP"}, 621 {"HP_L", NULL, "Headphone Amplifier"}, 622 {"HP_R", NULL, "Headphone Amplifier"}, 623 }; 624 625 static int wm8900_hw_params(struct snd_pcm_substream *substream, 626 struct snd_pcm_hw_params *params, 627 struct snd_soc_dai *dai) 628 { 629 struct snd_soc_component *component = dai->component; 630 u16 reg; 631 632 reg = snd_soc_component_read(component, WM8900_REG_AUDIO1) & ~0x60; 633 634 switch (params_width(params)) { 635 case 16: 636 break; 637 case 20: 638 reg |= 0x20; 639 break; 640 case 24: 641 reg |= 0x40; 642 break; 643 case 32: 644 reg |= 0x60; 645 break; 646 default: 647 return -EINVAL; 648 } 649 650 snd_soc_component_write(component, WM8900_REG_AUDIO1, reg); 651 652 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 653 reg = snd_soc_component_read(component, WM8900_REG_DACCTRL); 654 655 if (params_rate(params) <= 24000) 656 reg |= WM8900_REG_DACCTRL_DAC_SB_FILT; 657 else 658 reg &= ~WM8900_REG_DACCTRL_DAC_SB_FILT; 659 660 snd_soc_component_write(component, WM8900_REG_DACCTRL, reg); 661 } 662 663 return 0; 664 } 665 666 /* FLL divisors */ 667 struct _fll_div { 668 u16 fll_ratio; 669 u16 fllclk_div; 670 u16 fll_slow_lock_ref; 671 u16 n; 672 u16 k; 673 }; 674 675 /* The size in bits of the FLL divide multiplied by 10 676 * to allow rounding later */ 677 #define FIXED_FLL_SIZE ((1 << 16) * 10) 678 679 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref, 680 unsigned int Fout) 681 { 682 u64 Kpart; 683 unsigned int K, Ndiv, Nmod, target; 684 unsigned int div; 685 686 if (WARN_ON(!Fout)) 687 return -EINVAL; 688 689 /* The FLL must run at 90-100MHz which is then scaled down to 690 * the output value by FLLCLK_DIV. */ 691 target = Fout; 692 div = 1; 693 while (target < 90000000) { 694 div *= 2; 695 target *= 2; 696 } 697 698 if (target > 100000000) 699 printk(KERN_WARNING "wm8900: FLL rate %u out of range, Fref=%u" 700 " Fout=%u\n", target, Fref, Fout); 701 if (div > 32) { 702 printk(KERN_ERR "wm8900: Invalid FLL division rate %u, " 703 "Fref=%u, Fout=%u, target=%u\n", 704 div, Fref, Fout, target); 705 return -EINVAL; 706 } 707 708 fll_div->fllclk_div = div >> 2; 709 710 if (Fref < 48000) 711 fll_div->fll_slow_lock_ref = 1; 712 else 713 fll_div->fll_slow_lock_ref = 0; 714 715 Ndiv = target / Fref; 716 717 if (Fref < 1000000) 718 fll_div->fll_ratio = 8; 719 else 720 fll_div->fll_ratio = 1; 721 722 fll_div->n = Ndiv / fll_div->fll_ratio; 723 Nmod = (target / fll_div->fll_ratio) % Fref; 724 725 /* Calculate fractional part - scale up so we can round. */ 726 Kpart = FIXED_FLL_SIZE * (long long)Nmod; 727 728 do_div(Kpart, Fref); 729 730 K = Kpart & 0xFFFFFFFF; 731 732 if ((K % 10) >= 5) 733 K += 5; 734 735 /* Move down to proper range now rounding is done */ 736 fll_div->k = K / 10; 737 738 if (WARN_ON(target != Fout * (fll_div->fllclk_div << 2)) || 739 WARN_ON(!K && target != Fref * fll_div->fll_ratio * fll_div->n)) 740 return -EINVAL; 741 742 return 0; 743 } 744 745 static int wm8900_set_fll(struct snd_soc_component *component, 746 int fll_id, unsigned int freq_in, unsigned int freq_out) 747 { 748 struct wm8900_priv *wm8900 = snd_soc_component_get_drvdata(component); 749 struct _fll_div fll_div; 750 751 if (wm8900->fll_in == freq_in && wm8900->fll_out == freq_out) 752 return 0; 753 754 /* The digital side should be disabled during any change. */ 755 snd_soc_component_update_bits(component, WM8900_REG_POWER1, 756 WM8900_REG_POWER1_FLL_ENA, 0); 757 758 /* Disable the FLL? */ 759 if (!freq_in || !freq_out) { 760 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1, 761 WM8900_REG_CLOCKING1_MCLK_SRC, 0); 762 snd_soc_component_update_bits(component, WM8900_REG_FLLCTL1, 763 WM8900_REG_FLLCTL1_OSC_ENA, 0); 764 wm8900->fll_in = freq_in; 765 wm8900->fll_out = freq_out; 766 767 return 0; 768 } 769 770 if (fll_factors(&fll_div, freq_in, freq_out) != 0) 771 goto reenable; 772 773 wm8900->fll_in = freq_in; 774 wm8900->fll_out = freq_out; 775 776 /* The osclilator *MUST* be enabled before we enable the 777 * digital circuit. */ 778 snd_soc_component_write(component, WM8900_REG_FLLCTL1, 779 fll_div.fll_ratio | WM8900_REG_FLLCTL1_OSC_ENA); 780 781 snd_soc_component_write(component, WM8900_REG_FLLCTL4, fll_div.n >> 5); 782 snd_soc_component_write(component, WM8900_REG_FLLCTL5, 783 (fll_div.fllclk_div << 6) | (fll_div.n & 0x1f)); 784 785 if (fll_div.k) { 786 snd_soc_component_write(component, WM8900_REG_FLLCTL2, 787 (fll_div.k >> 8) | 0x100); 788 snd_soc_component_write(component, WM8900_REG_FLLCTL3, fll_div.k & 0xff); 789 } else 790 snd_soc_component_write(component, WM8900_REG_FLLCTL2, 0); 791 792 if (fll_div.fll_slow_lock_ref) 793 snd_soc_component_write(component, WM8900_REG_FLLCTL6, 794 WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF); 795 else 796 snd_soc_component_write(component, WM8900_REG_FLLCTL6, 0); 797 798 snd_soc_component_update_bits(component, WM8900_REG_POWER1, 799 WM8900_REG_POWER1_FLL_ENA, 800 WM8900_REG_POWER1_FLL_ENA); 801 802 reenable: 803 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1, 804 WM8900_REG_CLOCKING1_MCLK_SRC, 805 WM8900_REG_CLOCKING1_MCLK_SRC); 806 return 0; 807 } 808 809 static int wm8900_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 810 int source, unsigned int freq_in, unsigned int freq_out) 811 { 812 return wm8900_set_fll(codec_dai->component, pll_id, freq_in, freq_out); 813 } 814 815 static int wm8900_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 816 int div_id, int div) 817 { 818 struct snd_soc_component *component = codec_dai->component; 819 820 switch (div_id) { 821 case WM8900_BCLK_DIV: 822 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1, 823 WM8900_REG_CLOCKING1_BCLK_MASK, div); 824 break; 825 case WM8900_OPCLK_DIV: 826 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1, 827 WM8900_REG_CLOCKING1_OPCLK_MASK, div); 828 break; 829 case WM8900_DAC_LRCLK: 830 snd_soc_component_update_bits(component, WM8900_REG_AUDIO4, 831 WM8900_LRC_MASK, div); 832 break; 833 case WM8900_ADC_LRCLK: 834 snd_soc_component_update_bits(component, WM8900_REG_AUDIO3, 835 WM8900_LRC_MASK, div); 836 break; 837 case WM8900_DAC_CLKDIV: 838 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING2, 839 WM8900_REG_CLOCKING2_DAC_CLKDIV, div); 840 break; 841 case WM8900_ADC_CLKDIV: 842 snd_soc_component_update_bits(component, WM8900_REG_CLOCKING2, 843 WM8900_REG_CLOCKING2_ADC_CLKDIV, div); 844 break; 845 case WM8900_LRCLK_MODE: 846 snd_soc_component_update_bits(component, WM8900_REG_DACCTRL, 847 WM8900_REG_DACCTRL_AIF_LRCLKRATE, div); 848 break; 849 default: 850 return -EINVAL; 851 } 852 853 return 0; 854 } 855 856 857 static int wm8900_set_dai_fmt(struct snd_soc_dai *codec_dai, 858 unsigned int fmt) 859 { 860 struct snd_soc_component *component = codec_dai->component; 861 unsigned int clocking1, aif1, aif3, aif4; 862 863 clocking1 = snd_soc_component_read(component, WM8900_REG_CLOCKING1); 864 aif1 = snd_soc_component_read(component, WM8900_REG_AUDIO1); 865 aif3 = snd_soc_component_read(component, WM8900_REG_AUDIO3); 866 aif4 = snd_soc_component_read(component, WM8900_REG_AUDIO4); 867 868 /* set master/slave audio interface */ 869 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 870 case SND_SOC_DAIFMT_CBS_CFS: 871 clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR; 872 aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR; 873 aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR; 874 break; 875 case SND_SOC_DAIFMT_CBS_CFM: 876 clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR; 877 aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR; 878 aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR; 879 break; 880 case SND_SOC_DAIFMT_CBM_CFM: 881 clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR; 882 aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR; 883 aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR; 884 break; 885 case SND_SOC_DAIFMT_CBM_CFS: 886 clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR; 887 aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR; 888 aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR; 889 break; 890 default: 891 return -EINVAL; 892 } 893 894 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 895 case SND_SOC_DAIFMT_DSP_A: 896 aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK; 897 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV; 898 break; 899 case SND_SOC_DAIFMT_DSP_B: 900 aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK; 901 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV; 902 break; 903 case SND_SOC_DAIFMT_I2S: 904 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK; 905 aif1 |= 0x10; 906 break; 907 case SND_SOC_DAIFMT_RIGHT_J: 908 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK; 909 break; 910 case SND_SOC_DAIFMT_LEFT_J: 911 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK; 912 aif1 |= 0x8; 913 break; 914 default: 915 return -EINVAL; 916 } 917 918 /* Clock inversion */ 919 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 920 case SND_SOC_DAIFMT_DSP_A: 921 case SND_SOC_DAIFMT_DSP_B: 922 /* frame inversion not valid for DSP modes */ 923 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 924 case SND_SOC_DAIFMT_NB_NF: 925 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV; 926 break; 927 case SND_SOC_DAIFMT_IB_NF: 928 aif1 |= WM8900_REG_AUDIO1_BCLK_INV; 929 break; 930 default: 931 return -EINVAL; 932 } 933 break; 934 case SND_SOC_DAIFMT_I2S: 935 case SND_SOC_DAIFMT_RIGHT_J: 936 case SND_SOC_DAIFMT_LEFT_J: 937 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 938 case SND_SOC_DAIFMT_NB_NF: 939 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV; 940 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV; 941 break; 942 case SND_SOC_DAIFMT_IB_IF: 943 aif1 |= WM8900_REG_AUDIO1_BCLK_INV; 944 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV; 945 break; 946 case SND_SOC_DAIFMT_IB_NF: 947 aif1 |= WM8900_REG_AUDIO1_BCLK_INV; 948 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV; 949 break; 950 case SND_SOC_DAIFMT_NB_IF: 951 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV; 952 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV; 953 break; 954 default: 955 return -EINVAL; 956 } 957 break; 958 default: 959 return -EINVAL; 960 } 961 962 snd_soc_component_write(component, WM8900_REG_CLOCKING1, clocking1); 963 snd_soc_component_write(component, WM8900_REG_AUDIO1, aif1); 964 snd_soc_component_write(component, WM8900_REG_AUDIO3, aif3); 965 snd_soc_component_write(component, WM8900_REG_AUDIO4, aif4); 966 967 return 0; 968 } 969 970 static int wm8900_mute(struct snd_soc_dai *codec_dai, int mute, int direction) 971 { 972 struct snd_soc_component *component = codec_dai->component; 973 u16 reg; 974 975 reg = snd_soc_component_read(component, WM8900_REG_DACCTRL); 976 977 if (mute) 978 reg |= WM8900_REG_DACCTRL_MUTE; 979 else 980 reg &= ~WM8900_REG_DACCTRL_MUTE; 981 982 snd_soc_component_write(component, WM8900_REG_DACCTRL, reg); 983 984 return 0; 985 } 986 987 #define WM8900_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ 988 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ 989 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) 990 991 #define WM8900_PCM_FORMATS \ 992 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ 993 SNDRV_PCM_FMTBIT_S24_LE) 994 995 static const struct snd_soc_dai_ops wm8900_dai_ops = { 996 .hw_params = wm8900_hw_params, 997 .set_clkdiv = wm8900_set_dai_clkdiv, 998 .set_pll = wm8900_set_dai_pll, 999 .set_fmt = wm8900_set_dai_fmt, 1000 .mute_stream = wm8900_mute, 1001 .no_capture_mute = 1, 1002 }; 1003 1004 static struct snd_soc_dai_driver wm8900_dai = { 1005 .name = "wm8900-hifi", 1006 .playback = { 1007 .stream_name = "HiFi Playback", 1008 .channels_min = 1, 1009 .channels_max = 2, 1010 .rates = WM8900_RATES, 1011 .formats = WM8900_PCM_FORMATS, 1012 }, 1013 .capture = { 1014 .stream_name = "HiFi Capture", 1015 .channels_min = 1, 1016 .channels_max = 2, 1017 .rates = WM8900_RATES, 1018 .formats = WM8900_PCM_FORMATS, 1019 }, 1020 .ops = &wm8900_dai_ops, 1021 }; 1022 1023 static int wm8900_set_bias_level(struct snd_soc_component *component, 1024 enum snd_soc_bias_level level) 1025 { 1026 u16 reg; 1027 1028 switch (level) { 1029 case SND_SOC_BIAS_ON: 1030 /* Enable thermal shutdown */ 1031 snd_soc_component_update_bits(component, WM8900_REG_GPIO, 1032 WM8900_REG_GPIO_TEMP_ENA, 1033 WM8900_REG_GPIO_TEMP_ENA); 1034 snd_soc_component_update_bits(component, WM8900_REG_ADDCTL, 1035 WM8900_REG_ADDCTL_TEMP_SD, 1036 WM8900_REG_ADDCTL_TEMP_SD); 1037 break; 1038 1039 case SND_SOC_BIAS_PREPARE: 1040 break; 1041 1042 case SND_SOC_BIAS_STANDBY: 1043 /* Charge capacitors if initial power up */ 1044 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { 1045 /* STARTUP_BIAS_ENA on */ 1046 snd_soc_component_write(component, WM8900_REG_POWER1, 1047 WM8900_REG_POWER1_STARTUP_BIAS_ENA); 1048 1049 /* Startup bias mode */ 1050 snd_soc_component_write(component, WM8900_REG_ADDCTL, 1051 WM8900_REG_ADDCTL_BIAS_SRC | 1052 WM8900_REG_ADDCTL_VMID_SOFTST); 1053 1054 /* VMID 2x50k */ 1055 snd_soc_component_write(component, WM8900_REG_POWER1, 1056 WM8900_REG_POWER1_STARTUP_BIAS_ENA | 0x1); 1057 1058 /* Allow capacitors to charge */ 1059 schedule_timeout_interruptible(msecs_to_jiffies(400)); 1060 1061 /* Enable bias */ 1062 snd_soc_component_write(component, WM8900_REG_POWER1, 1063 WM8900_REG_POWER1_STARTUP_BIAS_ENA | 1064 WM8900_REG_POWER1_BIAS_ENA | 0x1); 1065 1066 snd_soc_component_write(component, WM8900_REG_ADDCTL, 0); 1067 1068 snd_soc_component_write(component, WM8900_REG_POWER1, 1069 WM8900_REG_POWER1_BIAS_ENA | 0x1); 1070 } 1071 1072 reg = snd_soc_component_read(component, WM8900_REG_POWER1); 1073 snd_soc_component_write(component, WM8900_REG_POWER1, 1074 (reg & WM8900_REG_POWER1_FLL_ENA) | 1075 WM8900_REG_POWER1_BIAS_ENA | 0x1); 1076 snd_soc_component_write(component, WM8900_REG_POWER2, 1077 WM8900_REG_POWER2_SYSCLK_ENA); 1078 snd_soc_component_write(component, WM8900_REG_POWER3, 0); 1079 break; 1080 1081 case SND_SOC_BIAS_OFF: 1082 /* Startup bias enable */ 1083 reg = snd_soc_component_read(component, WM8900_REG_POWER1); 1084 snd_soc_component_write(component, WM8900_REG_POWER1, 1085 reg & WM8900_REG_POWER1_STARTUP_BIAS_ENA); 1086 snd_soc_component_write(component, WM8900_REG_ADDCTL, 1087 WM8900_REG_ADDCTL_BIAS_SRC | 1088 WM8900_REG_ADDCTL_VMID_SOFTST); 1089 1090 /* Discharge caps */ 1091 snd_soc_component_write(component, WM8900_REG_POWER1, 1092 WM8900_REG_POWER1_STARTUP_BIAS_ENA); 1093 schedule_timeout_interruptible(msecs_to_jiffies(500)); 1094 1095 /* Remove clamp */ 1096 snd_soc_component_write(component, WM8900_REG_HPCTL1, 0); 1097 1098 /* Power down */ 1099 snd_soc_component_write(component, WM8900_REG_ADDCTL, 0); 1100 snd_soc_component_write(component, WM8900_REG_POWER1, 0); 1101 snd_soc_component_write(component, WM8900_REG_POWER2, 0); 1102 snd_soc_component_write(component, WM8900_REG_POWER3, 0); 1103 1104 /* Need to let things settle before stopping the clock 1105 * to ensure that restart works, see "Stopping the 1106 * master clock" in the datasheet. */ 1107 schedule_timeout_interruptible(msecs_to_jiffies(1)); 1108 snd_soc_component_write(component, WM8900_REG_POWER2, 1109 WM8900_REG_POWER2_SYSCLK_ENA); 1110 break; 1111 } 1112 return 0; 1113 } 1114 1115 static int wm8900_suspend(struct snd_soc_component *component) 1116 { 1117 struct wm8900_priv *wm8900 = snd_soc_component_get_drvdata(component); 1118 int fll_out = wm8900->fll_out; 1119 int fll_in = wm8900->fll_in; 1120 int ret; 1121 1122 /* Stop the FLL in an orderly fashion */ 1123 ret = wm8900_set_fll(component, 0, 0, 0); 1124 if (ret != 0) { 1125 dev_err(component->dev, "Failed to stop FLL\n"); 1126 return ret; 1127 } 1128 1129 wm8900->fll_out = fll_out; 1130 wm8900->fll_in = fll_in; 1131 1132 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF); 1133 1134 return 0; 1135 } 1136 1137 static int wm8900_resume(struct snd_soc_component *component) 1138 { 1139 struct wm8900_priv *wm8900 = snd_soc_component_get_drvdata(component); 1140 int ret; 1141 1142 wm8900_reset(component); 1143 1144 ret = regcache_sync(wm8900->regmap); 1145 if (ret != 0) { 1146 dev_err(component->dev, "Failed to restore cache: %d\n", ret); 1147 return ret; 1148 } 1149 1150 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY); 1151 1152 /* Restart the FLL? */ 1153 if (wm8900->fll_out) { 1154 int fll_out = wm8900->fll_out; 1155 int fll_in = wm8900->fll_in; 1156 1157 wm8900->fll_in = 0; 1158 wm8900->fll_out = 0; 1159 1160 ret = wm8900_set_fll(component, 0, fll_in, fll_out); 1161 if (ret != 0) { 1162 dev_err(component->dev, "Failed to restart FLL\n"); 1163 return ret; 1164 } 1165 } 1166 1167 return 0; 1168 } 1169 1170 static int wm8900_probe(struct snd_soc_component *component) 1171 { 1172 int reg; 1173 1174 reg = snd_soc_component_read(component, WM8900_REG_ID); 1175 if (reg != 0x8900) { 1176 dev_err(component->dev, "Device is not a WM8900 - ID %x\n", reg); 1177 return -ENODEV; 1178 } 1179 1180 wm8900_reset(component); 1181 1182 /* Turn the chip on */ 1183 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY); 1184 1185 /* Latch the volume update bits */ 1186 snd_soc_component_update_bits(component, WM8900_REG_LINVOL, 0x100, 0x100); 1187 snd_soc_component_update_bits(component, WM8900_REG_RINVOL, 0x100, 0x100); 1188 snd_soc_component_update_bits(component, WM8900_REG_LOUT1CTL, 0x100, 0x100); 1189 snd_soc_component_update_bits(component, WM8900_REG_ROUT1CTL, 0x100, 0x100); 1190 snd_soc_component_update_bits(component, WM8900_REG_LOUT2CTL, 0x100, 0x100); 1191 snd_soc_component_update_bits(component, WM8900_REG_ROUT2CTL, 0x100, 0x100); 1192 snd_soc_component_update_bits(component, WM8900_REG_LDAC_DV, 0x100, 0x100); 1193 snd_soc_component_update_bits(component, WM8900_REG_RDAC_DV, 0x100, 0x100); 1194 snd_soc_component_update_bits(component, WM8900_REG_LADC_DV, 0x100, 0x100); 1195 snd_soc_component_update_bits(component, WM8900_REG_RADC_DV, 0x100, 0x100); 1196 1197 /* Set the DAC and mixer output bias */ 1198 snd_soc_component_write(component, WM8900_REG_OUTBIASCTL, 0x81); 1199 1200 return 0; 1201 } 1202 1203 static const struct snd_soc_component_driver soc_component_dev_wm8900 = { 1204 .probe = wm8900_probe, 1205 .suspend = wm8900_suspend, 1206 .resume = wm8900_resume, 1207 .set_bias_level = wm8900_set_bias_level, 1208 .controls = wm8900_snd_controls, 1209 .num_controls = ARRAY_SIZE(wm8900_snd_controls), 1210 .dapm_widgets = wm8900_dapm_widgets, 1211 .num_dapm_widgets = ARRAY_SIZE(wm8900_dapm_widgets), 1212 .dapm_routes = wm8900_dapm_routes, 1213 .num_dapm_routes = ARRAY_SIZE(wm8900_dapm_routes), 1214 .idle_bias_on = 1, 1215 .use_pmdown_time = 1, 1216 .endianness = 1, 1217 .non_legacy_dai_naming = 1, 1218 }; 1219 1220 static const struct regmap_config wm8900_regmap = { 1221 .reg_bits = 8, 1222 .val_bits = 16, 1223 .max_register = WM8900_MAXREG, 1224 1225 .reg_defaults = wm8900_reg_defaults, 1226 .num_reg_defaults = ARRAY_SIZE(wm8900_reg_defaults), 1227 .cache_type = REGCACHE_RBTREE, 1228 1229 .volatile_reg = wm8900_volatile_register, 1230 }; 1231 1232 #if defined(CONFIG_SPI_MASTER) 1233 static int wm8900_spi_probe(struct spi_device *spi) 1234 { 1235 struct wm8900_priv *wm8900; 1236 int ret; 1237 1238 wm8900 = devm_kzalloc(&spi->dev, sizeof(struct wm8900_priv), 1239 GFP_KERNEL); 1240 if (wm8900 == NULL) 1241 return -ENOMEM; 1242 1243 wm8900->regmap = devm_regmap_init_spi(spi, &wm8900_regmap); 1244 if (IS_ERR(wm8900->regmap)) 1245 return PTR_ERR(wm8900->regmap); 1246 1247 spi_set_drvdata(spi, wm8900); 1248 1249 ret = devm_snd_soc_register_component(&spi->dev, 1250 &soc_component_dev_wm8900, &wm8900_dai, 1); 1251 1252 return ret; 1253 } 1254 1255 static struct spi_driver wm8900_spi_driver = { 1256 .driver = { 1257 .name = "wm8900", 1258 }, 1259 .probe = wm8900_spi_probe, 1260 }; 1261 #endif /* CONFIG_SPI_MASTER */ 1262 1263 #if IS_ENABLED(CONFIG_I2C) 1264 static int wm8900_i2c_probe(struct i2c_client *i2c, 1265 const struct i2c_device_id *id) 1266 { 1267 struct wm8900_priv *wm8900; 1268 int ret; 1269 1270 wm8900 = devm_kzalloc(&i2c->dev, sizeof(struct wm8900_priv), 1271 GFP_KERNEL); 1272 if (wm8900 == NULL) 1273 return -ENOMEM; 1274 1275 wm8900->regmap = devm_regmap_init_i2c(i2c, &wm8900_regmap); 1276 if (IS_ERR(wm8900->regmap)) 1277 return PTR_ERR(wm8900->regmap); 1278 1279 i2c_set_clientdata(i2c, wm8900); 1280 1281 ret = devm_snd_soc_register_component(&i2c->dev, 1282 &soc_component_dev_wm8900, &wm8900_dai, 1); 1283 1284 return ret; 1285 } 1286 1287 static int wm8900_i2c_remove(struct i2c_client *client) 1288 { 1289 return 0; 1290 } 1291 1292 static const struct i2c_device_id wm8900_i2c_id[] = { 1293 { "wm8900", 0 }, 1294 { } 1295 }; 1296 MODULE_DEVICE_TABLE(i2c, wm8900_i2c_id); 1297 1298 static struct i2c_driver wm8900_i2c_driver = { 1299 .driver = { 1300 .name = "wm8900", 1301 }, 1302 .probe = wm8900_i2c_probe, 1303 .remove = wm8900_i2c_remove, 1304 .id_table = wm8900_i2c_id, 1305 }; 1306 #endif 1307 1308 static int __init wm8900_modinit(void) 1309 { 1310 int ret = 0; 1311 #if IS_ENABLED(CONFIG_I2C) 1312 ret = i2c_add_driver(&wm8900_i2c_driver); 1313 if (ret != 0) { 1314 printk(KERN_ERR "Failed to register wm8900 I2C driver: %d\n", 1315 ret); 1316 } 1317 #endif 1318 #if defined(CONFIG_SPI_MASTER) 1319 ret = spi_register_driver(&wm8900_spi_driver); 1320 if (ret != 0) { 1321 printk(KERN_ERR "Failed to register wm8900 SPI driver: %d\n", 1322 ret); 1323 } 1324 #endif 1325 return ret; 1326 } 1327 module_init(wm8900_modinit); 1328 1329 static void __exit wm8900_exit(void) 1330 { 1331 #if IS_ENABLED(CONFIG_I2C) 1332 i2c_del_driver(&wm8900_i2c_driver); 1333 #endif 1334 #if defined(CONFIG_SPI_MASTER) 1335 spi_unregister_driver(&wm8900_spi_driver); 1336 #endif 1337 } 1338 module_exit(wm8900_exit); 1339 1340 MODULE_DESCRIPTION("ASoC WM8900 driver"); 1341 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>"); 1342 MODULE_LICENSE("GPL"); 1343