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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 | /*************************************************************************** * Copyright (C) 2010-2012 Hans de Goede <hdegoede@redhat.com> * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/err.h> #include <linux/mutex.h> #include "sch56xx-common.h" #define DRVNAME "sch5627" #define DEVNAME DRVNAME /* We only support one model */ #define SCH5627_HWMON_ID 0xa5 #define SCH5627_COMPANY_ID 0x5c #define SCH5627_PRIMARY_ID 0xa0 #define SCH5627_REG_BUILD_CODE 0x39 #define SCH5627_REG_BUILD_ID 0x3a #define SCH5627_REG_HWMON_ID 0x3c #define SCH5627_REG_HWMON_REV 0x3d #define SCH5627_REG_COMPANY_ID 0x3e #define SCH5627_REG_PRIMARY_ID 0x3f #define SCH5627_REG_CTRL 0x40 #define SCH5627_NO_TEMPS 8 #define SCH5627_NO_FANS 4 #define SCH5627_NO_IN 5 static const u16 SCH5627_REG_TEMP_MSB[SCH5627_NO_TEMPS] = { 0x2B, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x180, 0x181 }; static const u16 SCH5627_REG_TEMP_LSN[SCH5627_NO_TEMPS] = { 0xE2, 0xE1, 0xE1, 0xE5, 0xE5, 0xE6, 0x182, 0x182 }; static const u16 SCH5627_REG_TEMP_HIGH_NIBBLE[SCH5627_NO_TEMPS] = { 0, 0, 1, 1, 0, 0, 0, 1 }; static const u16 SCH5627_REG_TEMP_HIGH[SCH5627_NO_TEMPS] = { 0x61, 0x57, 0x59, 0x5B, 0x5D, 0x5F, 0x184, 0x186 }; static const u16 SCH5627_REG_TEMP_ABS[SCH5627_NO_TEMPS] = { 0x9B, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x1A8, 0x1A9 }; static const u16 SCH5627_REG_FAN[SCH5627_NO_FANS] = { 0x2C, 0x2E, 0x30, 0x32 }; static const u16 SCH5627_REG_FAN_MIN[SCH5627_NO_FANS] = { 0x62, 0x64, 0x66, 0x68 }; static const u16 SCH5627_REG_IN_MSB[SCH5627_NO_IN] = { 0x22, 0x23, 0x24, 0x25, 0x189 }; static const u16 SCH5627_REG_IN_LSN[SCH5627_NO_IN] = { 0xE4, 0xE4, 0xE3, 0xE3, 0x18A }; static const u16 SCH5627_REG_IN_HIGH_NIBBLE[SCH5627_NO_IN] = { 1, 0, 1, 0, 1 }; static const u16 SCH5627_REG_IN_FACTOR[SCH5627_NO_IN] = { 10745, 3660, 9765, 10745, 3660 }; static const char * const SCH5627_IN_LABELS[SCH5627_NO_IN] = { "VCC", "VTT", "VBAT", "VTR", "V_IN" }; struct sch5627_data { unsigned short addr; struct device *hwmon_dev; struct sch56xx_watchdog_data *watchdog; u8 control; u8 temp_max[SCH5627_NO_TEMPS]; u8 temp_crit[SCH5627_NO_TEMPS]; u16 fan_min[SCH5627_NO_FANS]; struct mutex update_lock; unsigned long last_battery; /* In jiffies */ char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ u16 temp[SCH5627_NO_TEMPS]; u16 fan[SCH5627_NO_FANS]; u16 in[SCH5627_NO_IN]; }; static struct sch5627_data *sch5627_update_device(struct device *dev) { struct sch5627_data *data = dev_get_drvdata(dev); struct sch5627_data *ret = data; int i, val; mutex_lock(&data->update_lock); /* Trigger a Vbat voltage measurement every 5 minutes */ if (time_after(jiffies, data->last_battery + 300 * HZ)) { sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL, data->control | 0x10); data->last_battery = jiffies; } /* Cache the values for 1 second */ if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { for (i = 0; i < SCH5627_NO_TEMPS; i++) { val = sch56xx_read_virtual_reg12(data->addr, SCH5627_REG_TEMP_MSB[i], SCH5627_REG_TEMP_LSN[i], SCH5627_REG_TEMP_HIGH_NIBBLE[i]); if (unlikely(val < 0)) { ret = ERR_PTR(val); goto abort; } data->temp[i] = val; } for (i = 0; i < SCH5627_NO_FANS; i++) { val = sch56xx_read_virtual_reg16(data->addr, SCH5627_REG_FAN[i]); if (unlikely(val < 0)) { ret = ERR_PTR(val); goto abort; } data->fan[i] = val; } for (i = 0; i < SCH5627_NO_IN; i++) { val = sch56xx_read_virtual_reg12(data->addr, SCH5627_REG_IN_MSB[i], SCH5627_REG_IN_LSN[i], SCH5627_REG_IN_HIGH_NIBBLE[i]); if (unlikely(val < 0)) { ret = ERR_PTR(val); goto abort; } data->in[i] = val; } data->last_updated = jiffies; data->valid = 1; } abort: mutex_unlock(&data->update_lock); return ret; } static int __devinit sch5627_read_limits(struct sch5627_data *data) { int i, val; for (i = 0; i < SCH5627_NO_TEMPS; i++) { /* * Note what SMSC calls ABS, is what lm_sensors calls max * (aka high), and HIGH is what lm_sensors calls crit. */ val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_TEMP_ABS[i]); if (val < 0) return val; data->temp_max[i] = val; val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_TEMP_HIGH[i]); if (val < 0) return val; data->temp_crit[i] = val; } for (i = 0; i < SCH5627_NO_FANS; i++) { val = sch56xx_read_virtual_reg16(data->addr, SCH5627_REG_FAN_MIN[i]); if (val < 0) return val; data->fan_min[i] = val; } return 0; } static int reg_to_temp(u16 reg) { return (reg * 625) / 10 - 64000; } static int reg_to_temp_limit(u8 reg) { return (reg - 64) * 1000; } static int reg_to_rpm(u16 reg) { if (reg == 0) return -EIO; if (reg == 0xffff) return 0; return 5400540 / reg; } static ssize_t show_name(struct device *dev, struct device_attribute *devattr, char *buf) { return snprintf(buf, PAGE_SIZE, "%s\n", DEVNAME); } static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct sch5627_data *data = sch5627_update_device(dev); int val; if (IS_ERR(data)) return PTR_ERR(data); val = reg_to_temp(data->temp[attr->index]); return snprintf(buf, PAGE_SIZE, "%d\n", val); } static ssize_t show_temp_fault(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct sch5627_data *data = sch5627_update_device(dev); if (IS_ERR(data)) return PTR_ERR(data); return snprintf(buf, PAGE_SIZE, "%d\n", data->temp[attr->index] == 0); } static ssize_t show_temp_max(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct sch5627_data *data = dev_get_drvdata(dev); int val; val = reg_to_temp_limit(data->temp_max[attr->index]); return snprintf(buf, PAGE_SIZE, "%d\n", val); } static ssize_t show_temp_crit(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct sch5627_data *data = dev_get_drvdata(dev); int val; val = reg_to_temp_limit(data->temp_crit[attr->index]); return snprintf(buf, PAGE_SIZE, "%d\n", val); } static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct sch5627_data *data = sch5627_update_device(dev); int val; if (IS_ERR(data)) return PTR_ERR(data); val = reg_to_rpm(data->fan[attr->index]); if (val < 0) return val; return snprintf(buf, PAGE_SIZE, "%d\n", val); } static ssize_t show_fan_fault(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct sch5627_data *data = sch5627_update_device(dev); if (IS_ERR(data)) return PTR_ERR(data); return snprintf(buf, PAGE_SIZE, "%d\n", data->fan[attr->index] == 0xffff); } static ssize_t show_fan_min(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct sch5627_data *data = dev_get_drvdata(dev); int val = reg_to_rpm(data->fan_min[attr->index]); if (val < 0) return val; return snprintf(buf, PAGE_SIZE, "%d\n", val); } static ssize_t show_in(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct sch5627_data *data = sch5627_update_device(dev); int val; if (IS_ERR(data)) return PTR_ERR(data); val = DIV_ROUND_CLOSEST( data->in[attr->index] * SCH5627_REG_IN_FACTOR[attr->index], 10000); return snprintf(buf, PAGE_SIZE, "%d\n", val); } static ssize_t show_in_label(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); return snprintf(buf, PAGE_SIZE, "%s\n", SCH5627_IN_LABELS[attr->index]); } static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4); static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5); static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6); static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7); static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0); static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1); static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2); static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3); static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4); static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5); static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_temp_fault, NULL, 6); static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_temp_fault, NULL, 7); static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL, 0); static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, NULL, 1); static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, NULL, 2); static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, NULL, 3); static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, NULL, 4); static SENSOR_DEVICE_ATTR(temp6_max, S_IRUGO, show_temp_max, NULL, 5); static SENSOR_DEVICE_ATTR(temp7_max, S_IRUGO, show_temp_max, NULL, 6); static SENSOR_DEVICE_ATTR(temp8_max, S_IRUGO, show_temp_max, NULL, 7); static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0); static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL, 1); static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit, NULL, 2); static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL, 3); static SENSOR_DEVICE_ATTR(temp5_crit, S_IRUGO, show_temp_crit, NULL, 4); static SENSOR_DEVICE_ATTR(temp6_crit, S_IRUGO, show_temp_crit, NULL, 5); static SENSOR_DEVICE_ATTR(temp7_crit, S_IRUGO, show_temp_crit, NULL, 6); static SENSOR_DEVICE_ATTR(temp8_crit, S_IRUGO, show_temp_crit, NULL, 7); static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL, 0); static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_fan_fault, NULL, 1); static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, show_fan_fault, NULL, 2); static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, show_fan_fault, NULL, 3); static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, show_fan_min, NULL, 0); static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO, show_fan_min, NULL, 1); static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO, show_fan_min, NULL, 2); static SENSOR_DEVICE_ATTR(fan4_min, S_IRUGO, show_fan_min, NULL, 3); static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4); static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_in_label, NULL, 0); static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_in_label, NULL, 1); static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_in_label, NULL, 2); static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_in_label, NULL, 3); static struct attribute *sch5627_attributes[] = { &dev_attr_name.attr, &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp3_input.dev_attr.attr, &sensor_dev_attr_temp4_input.dev_attr.attr, &sensor_dev_attr_temp5_input.dev_attr.attr, &sensor_dev_attr_temp6_input.dev_attr.attr, &sensor_dev_attr_temp7_input.dev_attr.attr, &sensor_dev_attr_temp8_input.dev_attr.attr, &sensor_dev_attr_temp1_fault.dev_attr.attr, &sensor_dev_attr_temp2_fault.dev_attr.attr, &sensor_dev_attr_temp3_fault.dev_attr.attr, &sensor_dev_attr_temp4_fault.dev_attr.attr, &sensor_dev_attr_temp5_fault.dev_attr.attr, &sensor_dev_attr_temp6_fault.dev_attr.attr, &sensor_dev_attr_temp7_fault.dev_attr.attr, &sensor_dev_attr_temp8_fault.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp2_max.dev_attr.attr, &sensor_dev_attr_temp3_max.dev_attr.attr, &sensor_dev_attr_temp4_max.dev_attr.attr, &sensor_dev_attr_temp5_max.dev_attr.attr, &sensor_dev_attr_temp6_max.dev_attr.attr, &sensor_dev_attr_temp7_max.dev_attr.attr, &sensor_dev_attr_temp8_max.dev_attr.attr, &sensor_dev_attr_temp1_crit.dev_attr.attr, &sensor_dev_attr_temp2_crit.dev_attr.attr, &sensor_dev_attr_temp3_crit.dev_attr.attr, &sensor_dev_attr_temp4_crit.dev_attr.attr, &sensor_dev_attr_temp5_crit.dev_attr.attr, &sensor_dev_attr_temp6_crit.dev_attr.attr, &sensor_dev_attr_temp7_crit.dev_attr.attr, &sensor_dev_attr_temp8_crit.dev_attr.attr, &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan3_input.dev_attr.attr, &sensor_dev_attr_fan4_input.dev_attr.attr, &sensor_dev_attr_fan1_fault.dev_attr.attr, &sensor_dev_attr_fan2_fault.dev_attr.attr, &sensor_dev_attr_fan3_fault.dev_attr.attr, &sensor_dev_attr_fan4_fault.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan3_min.dev_attr.attr, &sensor_dev_attr_fan4_min.dev_attr.attr, &sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_in3_input.dev_attr.attr, &sensor_dev_attr_in4_input.dev_attr.attr, &sensor_dev_attr_in0_label.dev_attr.attr, &sensor_dev_attr_in1_label.dev_attr.attr, &sensor_dev_attr_in2_label.dev_attr.attr, &sensor_dev_attr_in3_label.dev_attr.attr, /* No in4_label as in4 is a generic input pin */ NULL }; static const struct attribute_group sch5627_group = { .attrs = sch5627_attributes, }; static int sch5627_remove(struct platform_device *pdev) { struct sch5627_data *data = platform_get_drvdata(pdev); if (data->watchdog) sch56xx_watchdog_unregister(data->watchdog); if (data->hwmon_dev) hwmon_device_unregister(data->hwmon_dev); sysfs_remove_group(&pdev->dev.kobj, &sch5627_group); platform_set_drvdata(pdev, NULL); kfree(data); return 0; } static int __devinit sch5627_probe(struct platform_device *pdev) { struct sch5627_data *data; int err, build_code, build_id, hwmon_rev, val; data = kzalloc(sizeof(struct sch5627_data), GFP_KERNEL); if (!data) return -ENOMEM; data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start; mutex_init(&data->update_lock); platform_set_drvdata(pdev, data); val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_HWMON_ID); if (val < 0) { err = val; goto error; } if (val != SCH5627_HWMON_ID) { pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "hwmon", val, SCH5627_HWMON_ID); err = -ENODEV; goto error; } val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_COMPANY_ID); if (val < 0) { err = val; goto error; } if (val != SCH5627_COMPANY_ID) { pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "company", val, SCH5627_COMPANY_ID); err = -ENODEV; goto error; } val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_PRIMARY_ID); if (val < 0) { err = val; goto error; } if (val != SCH5627_PRIMARY_ID) { pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "primary", val, SCH5627_PRIMARY_ID); err = -ENODEV; goto error; } build_code = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_BUILD_CODE); if (build_code < 0) { err = build_code; goto error; } build_id = sch56xx_read_virtual_reg16(data->addr, SCH5627_REG_BUILD_ID); if (build_id < 0) { err = build_id; goto error; } hwmon_rev = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_HWMON_REV); if (hwmon_rev < 0) { err = hwmon_rev; goto error; } val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_CTRL); if (val < 0) { err = val; goto error; } data->control = val; if (!(data->control & 0x01)) { pr_err("hardware monitoring not enabled\n"); err = -ENODEV; goto error; } /* Trigger a Vbat voltage measurement, so that we get a valid reading the first time we read Vbat */ sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL, data->control | 0x10); data->last_battery = jiffies; /* * Read limits, we do this only once as reading a register on * the sch5627 is quite expensive (and they don't change). */ err = sch5627_read_limits(data); if (err) goto error; pr_info("found %s chip at %#hx\n", DEVNAME, data->addr); pr_info("firmware build: code 0x%02X, id 0x%04X, hwmon: rev 0x%02X\n", build_code, build_id, hwmon_rev); /* Register sysfs interface files */ err = sysfs_create_group(&pdev->dev.kobj, &sch5627_group); if (err) goto error; data->hwmon_dev = hwmon_device_register(&pdev->dev); if (IS_ERR(data->hwmon_dev)) { err = PTR_ERR(data->hwmon_dev); data->hwmon_dev = NULL; goto error; } /* Note failing to register the watchdog is not a fatal error */ data->watchdog = sch56xx_watchdog_register(data->addr, (build_code << 24) | (build_id << 8) | hwmon_rev, &data->update_lock, 1); return 0; error: sch5627_remove(pdev); return err; } static struct platform_driver sch5627_driver = { .driver = { .owner = THIS_MODULE, .name = DRVNAME, }, .probe = sch5627_probe, .remove = sch5627_remove, }; module_platform_driver(sch5627_driver); MODULE_DESCRIPTION("SMSC SCH5627 Hardware Monitoring Driver"); MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); MODULE_LICENSE("GPL"); |