sdtemp.c revision 1.25
1 /* $NetBSD: sdtemp.c,v 1.25 2015/04/23 23:23:00 pgoyette Exp $ */ 2 3 /* 4 * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Goyette. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: sdtemp.c,v 1.25 2015/04/23 23:23:00 pgoyette Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kmem.h> 38 #include <sys/device.h> 39 #include <sys/kernel.h> 40 #include <sys/endian.h> 41 #include <sys/module.h> 42 43 #include <dev/sysmon/sysmonvar.h> 44 45 #include <dev/i2c/i2cvar.h> 46 #include <dev/i2c/sdtemp_reg.h> 47 48 struct sdtemp_softc { 49 device_t sc_dev; 50 i2c_tag_t sc_tag; 51 int sc_address; 52 53 struct sysmon_envsys *sc_sme; 54 envsys_data_t *sc_sensor; 55 sysmon_envsys_lim_t sc_deflims; 56 uint32_t sc_defprops; 57 int sc_resolution; 58 uint16_t sc_capability; 59 }; 60 61 static int sdtemp_match(device_t, cfdata_t, void *); 62 static void sdtemp_attach(device_t, device_t, void *); 63 static int sdtemp_detach(device_t, int); 64 65 CFATTACH_DECL_NEW(sdtemp, sizeof(struct sdtemp_softc), 66 sdtemp_match, sdtemp_attach, sdtemp_detach, NULL); 67 68 static void sdtemp_refresh(struct sysmon_envsys *, envsys_data_t *); 69 static void sdtemp_get_limits(struct sysmon_envsys *, envsys_data_t *, 70 sysmon_envsys_lim_t *, uint32_t *); 71 static void sdtemp_set_limits(struct sysmon_envsys *, envsys_data_t *, 72 sysmon_envsys_lim_t *, uint32_t *); 73 #ifdef NOT_YET 74 static int sdtemp_read_8(struct sdtemp_softc *, uint8_t, uint8_t *); 75 static int sdtemp_write_8(struct sdtemp_softc *, uint8_t, uint8_t); 76 #endif /* NOT YET */ 77 static int sdtemp_read_16(struct sdtemp_softc *, uint8_t, uint16_t *); 78 static int sdtemp_write_16(struct sdtemp_softc *, uint8_t, uint16_t); 79 static uint32_t sdtemp_decode_temp(struct sdtemp_softc *, uint16_t); 80 static bool sdtemp_pmf_suspend(device_t, const pmf_qual_t *); 81 static bool sdtemp_pmf_resume(device_t, const pmf_qual_t *); 82 83 struct sdtemp_dev_entry { 84 const uint16_t sdtemp_mfg_id; 85 const uint16_t sdtemp_devrev; 86 const uint16_t sdtemp_mask; 87 const uint8_t sdtemp_resolution; 88 const char *sdtemp_desc; 89 }; 90 91 /* Convert sysmon_envsys uKelvin value to simple degC */ 92 93 #define __UK2C(uk) (((uk) - 273150000) / 1000000) 94 95 /* 96 * List of devices known to conform to JEDEC JC42.4 97 * 98 * NOTE: A non-negative value for resolution indicates that the sensor 99 * resolution is fixed at that number of fractional bits; a negative 100 * value indicates that the sensor needs to be configured. In either 101 * case, trip-point registers are fixed at two-bit (0.25C) resolution. 102 */ 103 static const struct sdtemp_dev_entry 104 sdtemp_dev_table[] = { 105 { MAXIM_MANUFACTURER_ID, MAX_6604_DEVICE_ID, MAX_6604_MASK, 3, 106 "Maxim MAX6604" }, 107 { MCP_MANUFACTURER_ID, MCP_9805_DEVICE_ID, MCP_9805_MASK, 2, 108 "Microchip Tech MCP9805/MCP9843" }, 109 { MCP_MANUFACTURER_ID, MCP_98243_DEVICE_ID, MCP_98243_MASK, -4, 110 "Microchip Tech MCP98243" }, 111 { MCP_MANUFACTURER_ID, MCP_98242_DEVICE_ID, MCP_98242_MASK, -4, 112 "Microchip Tech MCP98242" }, 113 { ADT_MANUFACTURER_ID, ADT_7408_DEVICE_ID, ADT_7408_MASK, 4, 114 "Analog Devices ADT7408" }, 115 { NXP_MANUFACTURER_ID, NXP_SE98_DEVICE_ID, NXP_SE98_MASK, 3, 116 "NXP Semiconductors SE97B/SE98" }, 117 { NXP_MANUFACTURER_ID, NXP_SE97_DEVICE_ID, NXP_SE97_MASK, 3, 118 "NXP Semiconductors SE97" }, 119 { STTS_MANUFACTURER_ID, STTS_424E_DEVICE_ID, STTS_424E_MASK, 2, 120 "STmicroelectronics STTS424E" }, 121 { STTS_MANUFACTURER_ID, STTS_424_DEVICE_ID, STTS_424_MASK, 2, 122 "STmicroelectronics STTS424" }, 123 { STTS_MANUFACTURER_ID, STTS_2002_DEVICE_ID, STTS_2002_MASK, 2, 124 "STmicroelectronics STTS2002" }, 125 { STTS_MANUFACTURER_ID, STTS_2004_DEVICE_ID, STTS_2004_MASK, 2, 126 "STmicroelectronics STTS2002" }, 127 { STTS_MANUFACTURER_ID, STTS_3000_DEVICE_ID, STTS_3000_MASK, 2, 128 "STmicroelectronics STTS3000" }, 129 { CAT_MANUFACTURER_ID, CAT_34TS02_DEVICE_ID, CAT_34TS02_MASK, 4, 130 "Catalyst CAT34TS02/CAT6095" }, 131 { IDT_MANUFACTURER_ID, IDT_TS3000B3_DEVICE_ID, IDT_TS3000B3_MASK, 4, 132 "Integrated Device Technology TS3000B3/TSE2002B3" }, 133 { 0, 0, 0, 2, "Unknown" } 134 }; 135 136 static int 137 sdtemp_lookup(uint16_t mfg, uint16_t devrev) 138 { 139 int i; 140 141 for (i = 0; sdtemp_dev_table[i].sdtemp_mfg_id; i++) { 142 if (mfg != sdtemp_dev_table[i].sdtemp_mfg_id) 143 continue; 144 if ((devrev & sdtemp_dev_table[i].sdtemp_mask) == 145 sdtemp_dev_table[i].sdtemp_devrev) 146 break; 147 } 148 149 return i; 150 } 151 152 static int 153 sdtemp_match(device_t parent, cfdata_t cf, void *aux) 154 { 155 struct i2c_attach_args *ia = aux; 156 uint16_t mfgid, devid; 157 struct sdtemp_softc sc; 158 int i, error; 159 160 sc.sc_tag = ia->ia_tag; 161 sc.sc_address = ia->ia_addr; 162 163 if ((ia->ia_addr & SDTEMP_ADDRMASK) != SDTEMP_ADDR) 164 return 0; 165 166 /* Verify that we can read the manufacturer ID & Device ID */ 167 iic_acquire_bus(sc.sc_tag, 0); 168 error = sdtemp_read_16(&sc, SDTEMP_REG_MFG_ID, &mfgid) | 169 sdtemp_read_16(&sc, SDTEMP_REG_DEV_REV, &devid); 170 iic_release_bus(sc.sc_tag, 0); 171 172 if (error) 173 return 0; 174 175 i = sdtemp_lookup(mfgid, devid); 176 if (sdtemp_dev_table[i].sdtemp_mfg_id == 0) { 177 aprint_debug("sdtemp: No match for mfg 0x%04x dev 0x%02x " 178 "rev 0x%02x at address 0x%02x\n", mfgid, devid >> 8, 179 devid & 0xff, sc.sc_address); 180 return 0; 181 } 182 183 return 1; 184 } 185 186 static void 187 sdtemp_attach(device_t parent, device_t self, void *aux) 188 { 189 struct sdtemp_softc *sc = device_private(self); 190 struct i2c_attach_args *ia = aux; 191 uint16_t mfgid, devid; 192 int i, error; 193 194 sc->sc_tag = ia->ia_tag; 195 sc->sc_address = ia->ia_addr; 196 sc->sc_dev = self; 197 198 iic_acquire_bus(sc->sc_tag, 0); 199 if ((error = sdtemp_read_16(sc, SDTEMP_REG_MFG_ID, &mfgid)) != 0 || 200 (error = sdtemp_read_16(sc, SDTEMP_REG_DEV_REV, &devid)) != 0) { 201 iic_release_bus(sc->sc_tag, 0); 202 aprint_error(": attach error %d\n", error); 203 return; 204 } 205 i = sdtemp_lookup(mfgid, devid); 206 sc->sc_resolution = 207 sdtemp_dev_table[i].sdtemp_resolution; 208 209 aprint_naive(": Temp Sensor\n"); 210 aprint_normal(": %s Temp Sensor\n", sdtemp_dev_table[i].sdtemp_desc); 211 212 if (sdtemp_dev_table[i].sdtemp_mfg_id == 0) 213 aprint_debug_dev(self, 214 "mfg 0x%04x dev 0x%02x rev 0x%02x at addr 0x%02x\n", 215 mfgid, devid >> 8, devid & 0xff, ia->ia_addr); 216 217 /* 218 * Alarm capability is required; if not present, this is likely 219 * not a real sdtemp device. 220 */ 221 error = sdtemp_read_16(sc, SDTEMP_REG_CAPABILITY, &sc->sc_capability); 222 if (error != 0 || (sc->sc_capability & SDTEMP_CAP_HAS_ALARM) == 0) { 223 iic_release_bus(sc->sc_tag, 0); 224 aprint_error_dev(self, 225 "required alarm capability not present!\n"); 226 return; 227 } 228 /* Set the configuration to defaults. */ 229 error = sdtemp_write_16(sc, SDTEMP_REG_CONFIG, 0); 230 if (error != 0) { 231 iic_release_bus(sc->sc_tag, 0); 232 aprint_error_dev(self, "error %d writing config register\n", 233 error); 234 return; 235 } 236 /* If variable resolution, set to max */ 237 if (sc->sc_resolution < 0) { 238 sc->sc_resolution = ~sc->sc_resolution; 239 error = sdtemp_write_16(sc, SDTEMP_REG_RESOLUTION, 240 sc->sc_resolution & 0x3); 241 if (error != 0) { 242 iic_release_bus(sc->sc_tag, 0); 243 aprint_error_dev(self, 244 "error %d writing resolution register\n", error); 245 return; 246 } else 247 sc->sc_resolution++; 248 } 249 iic_release_bus(sc->sc_tag, 0); 250 251 /* Hook us into the sysmon_envsys subsystem */ 252 sc->sc_sme = sysmon_envsys_create(); 253 sc->sc_sme->sme_name = device_xname(self); 254 sc->sc_sme->sme_cookie = sc; 255 sc->sc_sme->sme_refresh = sdtemp_refresh; 256 sc->sc_sme->sme_get_limits = sdtemp_get_limits; 257 sc->sc_sme->sme_set_limits = sdtemp_set_limits; 258 259 sc->sc_sensor = kmem_zalloc(sizeof(envsys_data_t), KM_NOSLEEP); 260 if (!sc->sc_sensor) { 261 aprint_error_dev(self, "unable to allocate sc_sensor\n"); 262 goto bad2; 263 } 264 265 /* Initialize sensor data. */ 266 sc->sc_sensor->units = ENVSYS_STEMP; 267 sc->sc_sensor->state = ENVSYS_SINVALID; 268 sc->sc_sensor->flags |= ENVSYS_FMONLIMITS; 269 (void)strlcpy(sc->sc_sensor->desc, device_xname(self), 270 sizeof(sc->sc_sensor->desc)); 271 snprintf(sc->sc_sensor->desc, sizeof(sc->sc_sensor->desc), 272 "DIMM %d temperature", sc->sc_address - SDTEMP_ADDR); 273 274 /* Now attach the sensor */ 275 if (sysmon_envsys_sensor_attach(sc->sc_sme, sc->sc_sensor)) { 276 aprint_error_dev(self, "unable to attach sensor\n"); 277 goto bad; 278 } 279 280 /* Register the device */ 281 error = sysmon_envsys_register(sc->sc_sme); 282 if (error) { 283 aprint_error_dev(self, "error %d registering with sysmon\n", 284 error); 285 goto bad; 286 } 287 288 if (!pmf_device_register(self, sdtemp_pmf_suspend, sdtemp_pmf_resume)) 289 aprint_error_dev(self, "couldn't establish power handler\n"); 290 291 /* Retrieve and display hardware monitor limits */ 292 sdtemp_get_limits(sc->sc_sme, sc->sc_sensor, &sc->sc_deflims, 293 &sc->sc_defprops); 294 aprint_normal_dev(self, "Hardware limits: "); 295 i = 0; 296 if (sc->sc_defprops & PROP_WARNMIN) { 297 aprint_normal("low %dC", 298 __UK2C(sc->sc_deflims.sel_warnmin)); 299 i++; 300 } 301 if (sc->sc_defprops & PROP_WARNMAX) { 302 aprint_normal("%shigh %dC ", (i)?", ":"", 303 __UK2C(sc->sc_deflims.sel_warnmax)); 304 i++; 305 } 306 if (sc->sc_defprops & PROP_CRITMAX) { 307 aprint_normal("%scritical %dC ", (i)?", ":"", 308 __UK2C(sc->sc_deflims.sel_critmax)); 309 i++; 310 } 311 aprint_normal("%s\n", (i)?"":"none set"); 312 313 return; 314 315 bad: 316 kmem_free(sc->sc_sensor, sizeof(envsys_data_t)); 317 bad2: 318 sysmon_envsys_destroy(sc->sc_sme); 319 } 320 321 static int 322 sdtemp_detach(device_t self, int flags) 323 { 324 struct sdtemp_softc *sc = device_private(self); 325 326 pmf_device_deregister(self); 327 328 if (sc->sc_sme) 329 sysmon_envsys_unregister(sc->sc_sme); 330 if (sc->sc_sensor) 331 kmem_free(sc->sc_sensor, sizeof(envsys_data_t)); 332 333 return 0; 334 } 335 336 /* Retrieve current limits from device, and encode in uKelvins */ 337 static void 338 sdtemp_get_limits(struct sysmon_envsys *sme, envsys_data_t *edata, 339 sysmon_envsys_lim_t *limits, uint32_t *props) 340 { 341 struct sdtemp_softc *sc = sme->sme_cookie; 342 uint16_t lim; 343 344 *props = 0; 345 iic_acquire_bus(sc->sc_tag, 0); 346 if (sdtemp_read_16(sc, SDTEMP_REG_LOWER_LIM, &lim) == 0 && lim != 0) { 347 limits->sel_warnmin = sdtemp_decode_temp(sc, lim); 348 *props |= PROP_WARNMIN; 349 } 350 if (sdtemp_read_16(sc, SDTEMP_REG_UPPER_LIM, &lim) == 0 && lim != 0) { 351 limits->sel_warnmax = sdtemp_decode_temp(sc, lim); 352 *props |= PROP_WARNMAX; 353 } 354 if (sdtemp_read_16(sc, SDTEMP_REG_CRIT_LIM, &lim) == 0 && lim != 0) { 355 limits->sel_critmax = sdtemp_decode_temp(sc, lim); 356 *props |= PROP_CRITMAX; 357 } 358 iic_release_bus(sc->sc_tag, 0); 359 if (*props != 0) 360 *props |= PROP_DRIVER_LIMITS; 361 } 362 363 /* Send current limit values to the device */ 364 static void 365 sdtemp_set_limits(struct sysmon_envsys *sme, envsys_data_t *edata, 366 sysmon_envsys_lim_t *limits, uint32_t *props) 367 { 368 uint16_t val; 369 struct sdtemp_softc *sc = sme->sme_cookie; 370 371 if (limits == NULL) { 372 limits = &sc->sc_deflims; 373 props = &sc->sc_defprops; 374 } 375 iic_acquire_bus(sc->sc_tag, 0); 376 if (*props & PROP_WARNMIN) { 377 val = __UK2C(limits->sel_warnmin); 378 (void)sdtemp_write_16(sc, SDTEMP_REG_LOWER_LIM, 379 (val << 4) & SDTEMP_TEMP_MASK); 380 } 381 if (*props & PROP_WARNMAX) { 382 val = __UK2C(limits->sel_warnmax); 383 (void)sdtemp_write_16(sc, SDTEMP_REG_UPPER_LIM, 384 (val << 4) & SDTEMP_TEMP_MASK); 385 } 386 if (*props & PROP_CRITMAX) { 387 val = __UK2C(limits->sel_critmax); 388 (void)sdtemp_write_16(sc, SDTEMP_REG_CRIT_LIM, 389 (val << 4) & SDTEMP_TEMP_MASK); 390 } 391 iic_release_bus(sc->sc_tag, 0); 392 393 /* 394 * If at least one limit is set that we can handle, and no 395 * limits are set that we cannot handle, tell sysmon that 396 * the driver will take care of monitoring the limits! 397 */ 398 if (*props & (PROP_CRITMIN | PROP_BATTCAP | PROP_BATTWARN)) 399 *props &= ~PROP_DRIVER_LIMITS; 400 else if (*props & PROP_LIMITS) 401 *props |= PROP_DRIVER_LIMITS; 402 else 403 *props &= ~PROP_DRIVER_LIMITS; 404 } 405 406 #ifdef NOT_YET /* All registers on these sensors are 16-bits */ 407 408 /* Read a 8-bit value from a register */ 409 static int 410 sdtemp_read_8(struct sdtemp_softc *sc, uint8_t reg, uint8_t *valp) 411 { 412 int error; 413 414 error = iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, 415 sc->sc_address, ®, 1, valp, sizeof(*valp), 0); 416 417 return error; 418 } 419 420 static int 421 sdtemp_write_8(struct sdtemp_softc *sc, uint8_t reg, uint8_t val) 422 { 423 return iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP, 424 sc->sc_address, ®, 1, &val, sizeof(val), 0); 425 } 426 #endif /* NOT_YET */ 427 428 /* Read a 16-bit value from a register */ 429 static int 430 sdtemp_read_16(struct sdtemp_softc *sc, uint8_t reg, uint16_t *valp) 431 { 432 int error; 433 434 error = iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, 435 sc->sc_address, ®, 1, valp, sizeof(*valp), 0); 436 if (error) 437 return error; 438 439 *valp = be16toh(*valp); 440 441 return 0; 442 } 443 444 static int 445 sdtemp_write_16(struct sdtemp_softc *sc, uint8_t reg, uint16_t val) 446 { 447 uint16_t temp; 448 449 temp = htobe16(val); 450 return iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP, 451 sc->sc_address, ®, 1, &temp, sizeof(temp), 0); 452 } 453 454 static uint32_t 455 sdtemp_decode_temp(struct sdtemp_softc *sc, uint16_t temp) 456 { 457 uint32_t val; 458 int32_t stemp; 459 460 /* Get only the temperature bits */ 461 temp &= SDTEMP_TEMP_MASK; 462 463 /* If necessary, extend the sign bit */ 464 if ((sc->sc_capability & SDTEMP_CAP_WIDER_RANGE) && 465 (temp & SDTEMP_TEMP_NEGATIVE)) 466 temp |= SDTEMP_TEMP_SIGN_EXT; 467 468 /* Mask off only bits valid within current resolution */ 469 temp &= ~(0xf >> sc->sc_resolution); 470 471 /* Treat as signed and extend to 32-bits */ 472 stemp = (int16_t)temp; 473 474 /* Now convert from 0.0625 (1/16) deg C increments to microKelvins */ 475 val = (stemp * 62500) + 273150000; 476 477 return val; 478 } 479 480 static void 481 sdtemp_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) 482 { 483 struct sdtemp_softc *sc = sme->sme_cookie; 484 uint16_t val; 485 int error; 486 487 iic_acquire_bus(sc->sc_tag, 0); 488 error = sdtemp_read_16(sc, SDTEMP_REG_AMBIENT_TEMP, &val); 489 iic_release_bus(sc->sc_tag, 0); 490 491 if (error) { 492 edata->state = ENVSYS_SINVALID; 493 return; 494 } 495 496 edata->value_cur = sdtemp_decode_temp(sc, val); 497 498 /* Now check for limits */ 499 if ((edata->upropset & PROP_DRIVER_LIMITS) == 0) 500 edata->state = ENVSYS_SVALID; 501 else if ((val & SDTEMP_ABOVE_CRIT) && 502 (edata->upropset & PROP_CRITMAX)) 503 edata->state = ENVSYS_SCRITOVER; 504 else if ((val & SDTEMP_ABOVE_UPPER) && 505 (edata->upropset & PROP_WARNMAX)) 506 edata->state = ENVSYS_SWARNOVER; 507 else if ((val & SDTEMP_BELOW_LOWER) && 508 (edata->upropset & PROP_WARNMIN)) 509 edata->state = ENVSYS_SWARNUNDER; 510 else 511 edata->state = ENVSYS_SVALID; 512 } 513 514 /* 515 * power management functions 516 * 517 * We go into "shutdown" mode at suspend time, and return to normal 518 * mode upon resume. This reduces power consumption by disabling 519 * the A/D converter. 520 */ 521 522 static bool 523 sdtemp_pmf_suspend(device_t dev, const pmf_qual_t *qual) 524 { 525 struct sdtemp_softc *sc = device_private(dev); 526 int error; 527 uint16_t config; 528 529 iic_acquire_bus(sc->sc_tag, 0); 530 error = sdtemp_read_16(sc, SDTEMP_REG_CONFIG, &config); 531 if (error == 0) { 532 config |= SDTEMP_CONFIG_SHUTDOWN_MODE; 533 error = sdtemp_write_16(sc, SDTEMP_REG_CONFIG, config); 534 } 535 iic_release_bus(sc->sc_tag, 0); 536 return (error == 0); 537 } 538 539 static bool 540 sdtemp_pmf_resume(device_t dev, const pmf_qual_t *qual) 541 { 542 struct sdtemp_softc *sc = device_private(dev); 543 int error; 544 uint16_t config; 545 546 iic_acquire_bus(sc->sc_tag, 0); 547 error = sdtemp_read_16(sc, SDTEMP_REG_CONFIG, &config); 548 if (error == 0) { 549 config &= ~SDTEMP_CONFIG_SHUTDOWN_MODE; 550 error = sdtemp_write_16(sc, SDTEMP_REG_CONFIG, config); 551 } 552 iic_release_bus(sc->sc_tag, 0); 553 return (error == 0); 554 } 555 556 MODULE(MODULE_CLASS_DRIVER, sdtemp, "i2cexec,sysmon_envsys"); 557 558 #ifdef _MODULE 559 #include "ioconf.c" 560 #endif 561 562 static int 563 sdtemp_modcmd(modcmd_t cmd, void *opaque) 564 { 565 int error = 0; 566 567 switch (cmd) { 568 case MODULE_CMD_INIT: 569 #ifdef _MODULE 570 error = config_init_component(cfdriver_ioconf_sdtemp, 571 cfattach_ioconf_sdtemp, cfdata_ioconf_sdtemp); 572 #endif 573 return error; 574 case MODULE_CMD_FINI: 575 #ifdef _MODULE 576 error = config_fini_component(cfdriver_ioconf_sdtemp, 577 cfattach_ioconf_sdtemp, cfdata_ioconf_sdtemp); 578 #endif 579 return error; 580 default: 581 return ENOTTY; 582 } 583 } 584
Indexes created Fri Sep 26 08:10:20 GMT 2025