as3722.c revision 1.9
1 /* $NetBSD: as3722.c,v 1.9 2017/04/22 23:50:13 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2015 Jared D. McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "opt_fdt.h" 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: as3722.c,v 1.9 2017/04/22 23:50:13 jmcneill Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/device.h> 38 #include <sys/conf.h> 39 #include <sys/bus.h> 40 #include <sys/kmem.h> 41 #include <sys/wdog.h> 42 43 #include <dev/clock_subr.h> 44 45 #include <dev/sysmon/sysmonvar.h> 46 47 #include <dev/i2c/i2cvar.h> 48 #include <dev/i2c/as3722.h> 49 50 #ifdef FDT 51 #include <dev/fdt/fdtvar.h> 52 #endif 53 54 #define AS3722_START_YEAR 2000 55 56 #define AS3722_SD0_VOLTAGE_REG 0x00 57 58 #define AS3722_GPIO0_CTRL_REG 0x08 59 #define AS3722_GPIO0_CTRL_INVERT __BIT(7) 60 #define AS3722_GPIO0_CTRL_IOSF __BITS(6,3) 61 #define AS3722_GPIO0_CTRL_IOSF_GPIO 0 62 #define AS3722_GPIO0_CTRL_IOSF_WATCHDOG 9 63 #define AS3722_GPIO0_CTRL_MODE __BITS(2,0) 64 #define AS3722_GPIO0_CTRL_MODE_PULLDOWN 5 65 66 #define AS3722_LDO6_VOLTAGE_REG 0x16 67 68 #define AS3722_RESET_CTRL_REG 0x36 69 #define AS3722_RESET_CTRL_POWER_OFF __BIT(1) 70 #define AS3722_RESET_CTRL_FORCE_RESET __BIT(0) 71 72 #define AS3722_WATCHDOG_CTRL_REG 0x38 73 #define AS3722_WATCHDOG_CTRL_MODE __BITS(2,1) 74 #define AS3722_WATCHDOG_CTRL_ON __BIT(0) 75 76 #define AS3722_WATCHDOG_TIMER_REG 0x46 77 #define AS3722_WATCHDOG_TIMER_TIMER __BITS(6,0) 78 79 #define AS3722_WATCHDOG_SIGNAL_REG 0x48 80 #define AS3722_WATCHDOG_SIGNAL_PWM_DIV __BITS(7,6) 81 #define AS3722_WATCHDOG_SIGNAL_SW_SIG __BIT(0) 82 83 #define AS3722_LDOCONTROL0_REG 0x4e 84 85 #define AS3722_RTC_CONTROL_REG 0x60 86 #define AS3722_RTC_CONTROL_RTC_ON __BIT(2) 87 88 #define AS3722_RTC_SECOND_REG 0x61 89 #define AS3722_RTC_MINUTE_REG 0x62 90 #define AS3722_RTC_HOUR_REG 0x63 91 #define AS3722_RTC_DAY_REG 0x64 92 #define AS3722_RTC_MONTH_REG 0x65 93 #define AS3722_RTC_YEAR_REG 0x66 94 #define AS3722_RTC_ACCESS_REG 0x6f 95 96 #define AS3722_ASIC_ID1_REG 0x90 97 #define AS3722_ASIC_ID2_REG 0x91 98 99 struct as3722_softc { 100 device_t sc_dev; 101 i2c_tag_t sc_i2c; 102 i2c_addr_t sc_addr; 103 int sc_phandle; 104 105 struct sysmon_wdog sc_smw; 106 struct todr_chip_handle sc_todr; 107 }; 108 109 #ifdef FDT 110 static int as3722reg_set_voltage_sd0(device_t, u_int, u_int); 111 static int as3722reg_get_voltage_sd0(device_t, u_int *); 112 static int as3722reg_set_voltage_ldo(device_t, u_int, u_int); 113 static int as3722reg_get_voltage_ldo(device_t, u_int *); 114 115 static const struct as3722regdef { 116 const char *name; 117 u_int vsel_reg; 118 u_int vsel_mask; 119 u_int enable_reg; 120 u_int enable_mask; 121 int (*set)(device_t, u_int, u_int); 122 int (*get)(device_t, u_int *); 123 } as3722regdefs[] = { 124 { .name = "sd0", 125 .vsel_reg = AS3722_SD0_VOLTAGE_REG, 126 .vsel_mask = 0x7f, 127 .set = as3722reg_set_voltage_sd0, 128 .get = as3722reg_get_voltage_sd0 }, 129 { .name = "ldo6", 130 .vsel_reg = AS3722_LDO6_VOLTAGE_REG, 131 .vsel_mask = 0x7f, 132 .enable_reg = AS3722_LDOCONTROL0_REG, 133 .enable_mask = 0x40, 134 .set = as3722reg_set_voltage_ldo, 135 .get = as3722reg_get_voltage_ldo }, 136 }; 137 138 struct as3722reg_softc { 139 device_t sc_dev; 140 int sc_phandle; 141 const struct as3722regdef *sc_regdef; 142 }; 143 144 struct as3722reg_attach_args { 145 const struct as3722regdef *reg_def; 146 int reg_phandle; 147 }; 148 #endif 149 150 #define AS3722_WATCHDOG_DEFAULT_PERIOD 10 151 152 static int as3722_match(device_t, cfdata_t, void *); 153 static void as3722_attach(device_t, device_t, void *); 154 155 static void as3722_wdt_attach(struct as3722_softc *); 156 static int as3722_wdt_setmode(struct sysmon_wdog *); 157 static int as3722_wdt_tickle(struct sysmon_wdog *); 158 159 static void as3722_rtc_attach(struct as3722_softc *); 160 static int as3722_rtc_gettime(todr_chip_handle_t, struct clock_ymdhms *); 161 static int as3722_rtc_settime(todr_chip_handle_t, struct clock_ymdhms *); 162 163 #ifdef FDT 164 static void as3722_regulator_attach(struct as3722_softc *); 165 static int as3722reg_match(device_t, cfdata_t, void *); 166 static void as3722reg_attach(device_t, device_t, void *); 167 168 static int as3722reg_acquire(device_t); 169 static void as3722reg_release(device_t); 170 static int as3722reg_enable(device_t, bool); 171 static int as3722reg_set_voltage(device_t, u_int, u_int); 172 static int as3722reg_get_voltage(device_t, u_int *); 173 174 static struct fdtbus_regulator_controller_func as3722reg_funcs = { 175 .acquire = as3722reg_acquire, 176 .release = as3722reg_release, 177 .enable = as3722reg_enable, 178 .set_voltage = as3722reg_set_voltage, 179 .get_voltage = as3722reg_get_voltage, 180 }; 181 #endif 182 183 static int as3722_read(struct as3722_softc *, uint8_t, uint8_t *, int); 184 static int as3722_write(struct as3722_softc *, uint8_t, uint8_t, int); 185 static int as3722_set_clear(struct as3722_softc *, uint8_t, uint8_t, 186 uint8_t, int); 187 188 CFATTACH_DECL_NEW(as3722pmic, sizeof(struct as3722_softc), 189 as3722_match, as3722_attach, NULL, NULL); 190 191 #ifdef FDT 192 CFATTACH_DECL_NEW(as3722reg, sizeof(struct as3722reg_softc), 193 as3722reg_match, as3722reg_attach, NULL, NULL); 194 #endif 195 196 static const char * as3722_compats[] = { 197 "ams,as3722", 198 NULL 199 }; 200 201 static int 202 as3722_match(device_t parent, cfdata_t match, void *aux) 203 { 204 struct i2c_attach_args *ia = aux; 205 uint8_t reg, id1; 206 int error; 207 208 if (ia->ia_name == NULL) { 209 iic_acquire_bus(ia->ia_tag, I2C_F_POLL); 210 reg = AS3722_ASIC_ID1_REG; 211 error = iic_exec(ia->ia_tag, I2C_OP_READ_WITH_STOP, ia->ia_addr, 212 ®, 1, &id1, 1, I2C_F_POLL); 213 iic_release_bus(ia->ia_tag, I2C_F_POLL); 214 215 if (error == 0 && id1 == 0x0c) 216 return 1; 217 218 return 0; 219 } else { 220 return iic_compat_match(ia, as3722_compats); 221 } 222 } 223 224 static void 225 as3722_attach(device_t parent, device_t self, void *aux) 226 { 227 struct as3722_softc * const sc = device_private(self); 228 struct i2c_attach_args *ia = aux; 229 230 sc->sc_dev = self; 231 sc->sc_i2c = ia->ia_tag; 232 sc->sc_addr = ia->ia_addr; 233 sc->sc_phandle = ia->ia_cookie; 234 235 aprint_naive("\n"); 236 aprint_normal(": AMS AS3722\n"); 237 238 as3722_wdt_attach(sc); 239 as3722_rtc_attach(sc); 240 #ifdef FDT 241 as3722_regulator_attach(sc); 242 #endif 243 } 244 245 static void 246 as3722_wdt_attach(struct as3722_softc *sc) 247 { 248 int error; 249 250 iic_acquire_bus(sc->sc_i2c, I2C_F_POLL); 251 error = as3722_write(sc, AS3722_GPIO0_CTRL_REG, 252 __SHIFTIN(AS3722_GPIO0_CTRL_IOSF_GPIO, 253 AS3722_GPIO0_CTRL_IOSF) | 254 __SHIFTIN(AS3722_GPIO0_CTRL_MODE_PULLDOWN, 255 AS3722_GPIO0_CTRL_MODE), 256 I2C_F_POLL); 257 error += as3722_set_clear(sc, AS3722_WATCHDOG_CTRL_REG, 258 __SHIFTIN(1, AS3722_WATCHDOG_CTRL_MODE), 0, I2C_F_POLL); 259 iic_release_bus(sc->sc_i2c, I2C_F_POLL); 260 261 if (error) { 262 aprint_error_dev(sc->sc_dev, "couldn't setup watchdog\n"); 263 return; 264 } 265 266 sc->sc_smw.smw_name = device_xname(sc->sc_dev); 267 sc->sc_smw.smw_cookie = sc; 268 sc->sc_smw.smw_setmode = as3722_wdt_setmode; 269 sc->sc_smw.smw_tickle = as3722_wdt_tickle; 270 sc->sc_smw.smw_period = AS3722_WATCHDOG_DEFAULT_PERIOD; 271 272 aprint_normal_dev(sc->sc_dev, "default watchdog period is %u seconds\n", 273 sc->sc_smw.smw_period); 274 275 if (sysmon_wdog_register(&sc->sc_smw) != 0) 276 aprint_error_dev(sc->sc_dev, "couldn't register with sysmon\n"); 277 } 278 279 static void 280 as3722_rtc_attach(struct as3722_softc *sc) 281 { 282 int error; 283 284 iic_acquire_bus(sc->sc_i2c, I2C_F_POLL); 285 error = as3722_set_clear(sc, AS3722_RTC_CONTROL_REG, 286 AS3722_RTC_CONTROL_RTC_ON, 0, I2C_F_POLL); 287 iic_release_bus(sc->sc_i2c, I2C_F_POLL); 288 289 if (error) { 290 aprint_error_dev(sc->sc_dev, "couldn't setup RTC\n"); 291 return; 292 } 293 294 sc->sc_todr.todr_gettime_ymdhms = as3722_rtc_gettime; 295 sc->sc_todr.todr_settime_ymdhms = as3722_rtc_settime; 296 sc->sc_todr.cookie = sc; 297 #ifdef FDT 298 fdtbus_todr_attach(sc->sc_dev, sc->sc_phandle, &sc->sc_todr); 299 #else 300 todr_attach(&sc->sc_todr); 301 #endif 302 } 303 304 static int 305 as3722_read(struct as3722_softc *sc, uint8_t reg, uint8_t *val, int flags) 306 { 307 return iic_exec(sc->sc_i2c, I2C_OP_READ_WITH_STOP, sc->sc_addr, 308 ®, 1, val, 1, flags); 309 } 310 311 static int 312 as3722_write(struct as3722_softc *sc, uint8_t reg, uint8_t val, int flags) 313 { 314 uint8_t buf[2] = { reg, val }; 315 return iic_exec(sc->sc_i2c, I2C_OP_WRITE_WITH_STOP, sc->sc_addr, 316 NULL, 0, buf, 2, flags); 317 } 318 319 static int 320 as3722_set_clear(struct as3722_softc *sc, uint8_t reg, uint8_t set, 321 uint8_t clr, int flags) 322 { 323 uint8_t old, new; 324 int error; 325 326 error = as3722_read(sc, reg, &old, flags); 327 if (error) { 328 return error; 329 } 330 new = set | (old & ~clr); 331 332 return as3722_write(sc, reg, new, flags); 333 } 334 335 static int 336 as3722_wdt_setmode(struct sysmon_wdog *smw) 337 { 338 struct as3722_softc * const sc = smw->smw_cookie; 339 int error; 340 341 const int flags = (cold ? I2C_F_POLL : 0); 342 343 if ((smw->smw_mode & WDOG_MODE_MASK) == WDOG_MODE_DISARMED) { 344 iic_acquire_bus(sc->sc_i2c, flags); 345 error = as3722_set_clear(sc, AS3722_WATCHDOG_CTRL_REG, 346 0, AS3722_WATCHDOG_CTRL_ON, flags); 347 iic_release_bus(sc->sc_i2c, flags); 348 return error; 349 } 350 351 if (smw->smw_period == WDOG_PERIOD_DEFAULT) { 352 smw->smw_period = AS3722_WATCHDOG_DEFAULT_PERIOD; 353 } 354 if (smw->smw_period < 1 || smw->smw_period > 128) { 355 return EINVAL; 356 } 357 sc->sc_smw.smw_period = smw->smw_period; 358 359 iic_acquire_bus(sc->sc_i2c, flags); 360 error = as3722_set_clear(sc, AS3722_WATCHDOG_TIMER_REG, 361 __SHIFTIN(sc->sc_smw.smw_period - 1, AS3722_WATCHDOG_TIMER_TIMER), 362 AS3722_WATCHDOG_TIMER_TIMER, flags); 363 if (error == 0) { 364 error = as3722_set_clear(sc, AS3722_WATCHDOG_CTRL_REG, 365 AS3722_WATCHDOG_CTRL_ON, 0, flags); 366 } 367 iic_release_bus(sc->sc_i2c, flags); 368 369 return error; 370 } 371 372 static int 373 as3722_wdt_tickle(struct sysmon_wdog *smw) 374 { 375 struct as3722_softc * const sc = smw->smw_cookie; 376 int error; 377 378 const int flags = (cold ? I2C_F_POLL : 0); 379 380 iic_acquire_bus(sc->sc_i2c, flags); 381 error = as3722_set_clear(sc, AS3722_WATCHDOG_SIGNAL_REG, 382 AS3722_WATCHDOG_SIGNAL_SW_SIG, 0, flags); 383 iic_release_bus(sc->sc_i2c, flags); 384 385 return error; 386 } 387 388 static int 389 as3722_rtc_gettime(todr_chip_handle_t tch, struct clock_ymdhms *dt) 390 { 391 struct as3722_softc * const sc = tch->cookie; 392 uint8_t buf[6]; 393 int error = 0; 394 395 const int flags = (cold ? I2C_F_POLL : 0); 396 397 iic_acquire_bus(sc->sc_i2c, flags); 398 error += as3722_read(sc, AS3722_RTC_SECOND_REG, &buf[0], flags); 399 error += as3722_read(sc, AS3722_RTC_MINUTE_REG, &buf[1], flags); 400 error += as3722_read(sc, AS3722_RTC_HOUR_REG, &buf[2], flags); 401 error += as3722_read(sc, AS3722_RTC_DAY_REG, &buf[3], flags); 402 error += as3722_read(sc, AS3722_RTC_MONTH_REG, &buf[4], flags); 403 error += as3722_read(sc, AS3722_RTC_YEAR_REG, &buf[5], flags); 404 iic_release_bus(sc->sc_i2c, flags); 405 406 if (error) 407 return error; 408 409 dt->dt_sec = bcdtobin(buf[0] & 0x7f); 410 dt->dt_min = bcdtobin(buf[1] & 0x7f); 411 dt->dt_hour = bcdtobin(buf[2] & 0x3f); 412 dt->dt_day = bcdtobin(buf[3] & 0x3f); 413 dt->dt_mon = bcdtobin(buf[4] & 0x1f) - 1; 414 dt->dt_year = AS3722_START_YEAR + bcdtobin(buf[5] & 0x7f); 415 dt->dt_wday = 0; 416 417 return 0; 418 } 419 420 static int 421 as3722_rtc_settime(todr_chip_handle_t tch, struct clock_ymdhms *dt) 422 { 423 struct as3722_softc * const sc = tch->cookie; 424 uint8_t buf[6]; 425 int error = 0; 426 427 if (dt->dt_year < AS3722_START_YEAR) 428 return EINVAL; 429 430 buf[0] = bintobcd(dt->dt_sec) & 0x7f; 431 buf[1] = bintobcd(dt->dt_min) & 0x7f; 432 buf[2] = bintobcd(dt->dt_hour) & 0x3f; 433 buf[3] = bintobcd(dt->dt_day) & 0x3f; 434 buf[4] = bintobcd(dt->dt_mon + 1) & 0x1f; 435 buf[5] = bintobcd(dt->dt_year - AS3722_START_YEAR) & 0x7f; 436 437 const int flags = (cold ? I2C_F_POLL : 0); 438 439 iic_acquire_bus(sc->sc_i2c, flags); 440 error += as3722_write(sc, AS3722_RTC_SECOND_REG, buf[0], flags); 441 error += as3722_write(sc, AS3722_RTC_MINUTE_REG, buf[1], flags); 442 error += as3722_write(sc, AS3722_RTC_HOUR_REG, buf[2], flags); 443 error += as3722_write(sc, AS3722_RTC_DAY_REG, buf[3], flags); 444 error += as3722_write(sc, AS3722_RTC_MONTH_REG, buf[4], flags); 445 error += as3722_write(sc, AS3722_RTC_YEAR_REG, buf[5], flags); 446 iic_release_bus(sc->sc_i2c, flags); 447 448 return error; 449 } 450 451 #ifdef FDT 452 static void 453 as3722_regulator_attach(struct as3722_softc *sc) 454 { 455 struct as3722reg_attach_args raa; 456 int phandle, child; 457 458 phandle = of_find_firstchild_byname(sc->sc_phandle, "regulators"); 459 if (phandle <= 0) 460 return; 461 462 for (int i = 0; i < __arraycount(as3722regdefs); i++) { 463 const struct as3722regdef *regdef = &as3722regdefs[i]; 464 child = of_find_firstchild_byname(phandle, regdef->name); 465 if (child <= 0) 466 continue; 467 raa.reg_def = regdef; 468 raa.reg_phandle = child; 469 config_found(sc->sc_dev, &raa, NULL); 470 } 471 } 472 473 static int 474 as3722reg_match(device_t parent, cfdata_t match, void *aux) 475 { 476 return 1; 477 } 478 479 static void 480 as3722reg_attach(device_t parent, device_t self, void *aux) 481 { 482 struct as3722reg_softc *sc = device_private(self); 483 struct as3722reg_attach_args *raa = aux; 484 char *name = NULL; 485 int len; 486 487 sc->sc_dev = self; 488 sc->sc_phandle = raa->reg_phandle; 489 sc->sc_regdef = raa->reg_def; 490 491 fdtbus_register_regulator_controller(self, sc->sc_phandle, 492 &as3722reg_funcs); 493 494 len = OF_getproplen(sc->sc_phandle, "regulator-name"); 495 if (len > 0) { 496 name = kmem_zalloc(len, KM_SLEEP); 497 OF_getprop(sc->sc_phandle, "regulator-name", name, len); 498 } 499 500 aprint_naive("\n"); 501 if (name) 502 aprint_normal(": %s\n", name); 503 else 504 aprint_normal("\n"); 505 506 if (name) 507 kmem_free(name, len); 508 } 509 510 static int 511 as3722reg_acquire(device_t dev) 512 { 513 return 0; 514 } 515 516 static void 517 as3722reg_release(device_t dev) 518 { 519 } 520 521 static int 522 as3722reg_enable(device_t dev, bool enable) 523 { 524 struct as3722reg_softc *sc = device_private(dev); 525 struct as3722_softc *asc = device_private(device_parent(dev)); 526 const struct as3722regdef *regdef = sc->sc_regdef; 527 const int flags = (cold ? I2C_F_POLL : 0); 528 int error; 529 530 if (!regdef->enable_mask) 531 return enable ? 0 : EINVAL; 532 533 iic_acquire_bus(asc->sc_i2c, flags); 534 if (enable) 535 error = as3722_set_clear(asc, regdef->enable_reg, 536 regdef->enable_mask, 0, flags); 537 else 538 error = as3722_set_clear(asc, regdef->enable_reg, 539 0, regdef->enable_mask, flags); 540 iic_release_bus(asc->sc_i2c, flags); 541 542 return error; 543 } 544 545 static int 546 as3722reg_set_voltage_ldo(device_t dev, u_int min_uvol, u_int max_uvol) 547 { 548 struct as3722reg_softc *sc = device_private(dev); 549 struct as3722_softc *asc = device_private(device_parent(dev)); 550 const struct as3722regdef *regdef = sc->sc_regdef; 551 const int flags = (cold ? I2C_F_POLL : 0); 552 uint8_t set_v = 0x00; 553 u_int uvol; 554 int error; 555 556 for (uint8_t v = 0x01; v <= 0x24; v++) { 557 uvol = 800000 + (v * 25000); 558 if (uvol >= min_uvol && uvol <= max_uvol) { 559 set_v = v; 560 goto done; 561 } 562 } 563 for (uint8_t v = 0x40; v <= 0x7f; v++) { 564 uvol = 1725000 + ((v - 0x40) * 25000); 565 if (uvol >= min_uvol && uvol <= max_uvol) { 566 set_v = v; 567 goto done; 568 } 569 } 570 if (set_v == 0) 571 return ERANGE; 572 573 done: 574 iic_acquire_bus(asc->sc_i2c, flags); 575 error = as3722_set_clear(asc, regdef->vsel_reg, set_v, 576 regdef->vsel_mask, flags); 577 iic_release_bus(asc->sc_i2c, flags); 578 579 return error; 580 } 581 582 static int 583 as3722reg_get_voltage_ldo(device_t dev, u_int *puvol) 584 { 585 struct as3722reg_softc *sc = device_private(dev); 586 struct as3722_softc *asc = device_private(device_parent(dev)); 587 const struct as3722regdef *regdef = sc->sc_regdef; 588 const int flags = (cold ? I2C_F_POLL : 0); 589 uint8_t v; 590 int error; 591 592 iic_acquire_bus(asc->sc_i2c, flags); 593 error = as3722_read(asc, regdef->vsel_reg, &v, flags); 594 iic_release_bus(asc->sc_i2c, flags); 595 if (error != 0) 596 return error; 597 598 v &= regdef->vsel_mask; 599 600 if (v == 0) 601 *puvol = 0; /* LDO off */ 602 else if (v >= 0x01 && v <= 0x24) 603 *puvol = 800000 + (v * 25000); 604 else if (v >= 0x40 && v <= 0x7f) 605 *puvol = 1725000 + ((v - 0x40) * 25000); 606 else 607 return EINVAL; 608 609 return 0; 610 } 611 612 static int 613 as3722reg_set_voltage_sd0(device_t dev, u_int min_uvol, u_int max_uvol) 614 { 615 struct as3722reg_softc *sc = device_private(dev); 616 struct as3722_softc *asc = device_private(device_parent(dev)); 617 const struct as3722regdef *regdef = sc->sc_regdef; 618 const int flags = (cold ? I2C_F_POLL : 0); 619 uint8_t set_v = 0x00; 620 u_int uvol; 621 int error; 622 623 for (uint8_t v = 0x01; v <= 0x5a; v++) { 624 uvol = 600000 + (v * 10000); 625 if (uvol >= min_uvol && uvol <= max_uvol) { 626 set_v = v; 627 goto done; 628 } 629 } 630 if (set_v == 0) 631 return ERANGE; 632 633 done: 634 iic_acquire_bus(asc->sc_i2c, flags); 635 error = as3722_set_clear(asc, regdef->vsel_reg, set_v, 636 regdef->vsel_mask, flags); 637 iic_release_bus(asc->sc_i2c, flags); 638 639 return error; 640 } 641 642 static int 643 as3722reg_get_voltage_sd0(device_t dev, u_int *puvol) 644 { 645 struct as3722reg_softc *sc = device_private(dev); 646 struct as3722_softc *asc = device_private(device_parent(dev)); 647 const struct as3722regdef *regdef = sc->sc_regdef; 648 const int flags = (cold ? I2C_F_POLL : 0); 649 uint8_t v; 650 int error; 651 652 iic_acquire_bus(asc->sc_i2c, flags); 653 error = as3722_read(asc, regdef->vsel_reg, &v, flags); 654 iic_release_bus(asc->sc_i2c, flags); 655 if (error != 0) 656 return error; 657 658 v &= regdef->vsel_mask; 659 660 if (v == 0) 661 *puvol = 0; /* DC/DC powered down */ 662 else if (v >= 0x01 && v <= 0x5a) 663 *puvol = 600000 + (v * 10000); 664 else 665 return EINVAL; 666 667 return 0; 668 } 669 670 static int 671 as3722reg_set_voltage(device_t dev, u_int min_uvol, u_int max_uvol) 672 { 673 struct as3722reg_softc *sc = device_private(dev); 674 const struct as3722regdef *regdef = sc->sc_regdef; 675 676 return regdef->set(dev, min_uvol, max_uvol); 677 } 678 679 static int 680 as3722reg_get_voltage(device_t dev, u_int *puvol) 681 { 682 struct as3722reg_softc *sc = device_private(dev); 683 const struct as3722regdef *regdef = sc->sc_regdef; 684 685 return regdef->get(dev, puvol); 686 } 687 #endif 688 689 int 690 as3722_poweroff(device_t dev) 691 { 692 struct as3722_softc * const sc = device_private(dev); 693 int error; 694 695 const int flags = I2C_F_POLL; 696 697 iic_acquire_bus(sc->sc_i2c, flags); 698 error = as3722_write(sc, AS3722_RESET_CTRL_REG, 699 AS3722_RESET_CTRL_POWER_OFF, flags); 700 iic_release_bus(sc->sc_i2c, flags); 701 702 return error; 703 } 704 705 int 706 as3722_reboot(device_t dev) 707 { 708 struct as3722_softc * const sc = device_private(dev); 709 int error; 710 711 const int flags = I2C_F_POLL; 712 713 iic_acquire_bus(sc->sc_i2c, flags); 714 error = as3722_write(sc, AS3722_RESET_CTRL_REG, 715 AS3722_RESET_CTRL_FORCE_RESET, flags); 716 iic_release_bus(sc->sc_i2c, flags); 717 718 return error; 719 } 720
Indexes created Fri Oct 03 02:09:57 GMT 2025