1 /*-*-linux-c-*-*/ 2 3 /* 4 Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com> 5 6 based on MSI driver 7 8 Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de> 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 2 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, but 16 WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 23 02110-1301, USA. 24 */ 25 26 /* 27 * compal-laptop.c - Compal laptop support. 28 * 29 * This driver exports a few files in /sys/devices/platform/compal-laptop/: 30 * wake_up_XXX Whether or not we listen to such wake up events (rw) 31 * 32 * In addition to these platform device attributes the driver 33 * registers itself in the Linux backlight control, power_supply, rfkill 34 * and hwmon subsystem and is available to userspace under: 35 * 36 * /sys/class/backlight/compal-laptop/ 37 * /sys/class/power_supply/compal-laptop/ 38 * /sys/class/rfkill/rfkillX/ 39 * /sys/class/hwmon/hwmonX/ 40 * 41 * Notes on the power_supply battery interface: 42 * - the "minimum" design voltage is *the* design voltage 43 * - the ambient temperature is the average battery temperature 44 * and the value is an educated guess (see commented code below) 45 * 46 * 47 * This driver might work on other laptops produced by Compal. If you 48 * want to try it you can pass force=1 as argument to the module which 49 * will force it to load even when the DMI data doesn't identify the 50 * laptop as compatible. 51 * 52 * Lots of data available at: 53 * http://service1.marasst.com/Compal/JHL90_91/Service%20Manual/ 54 * JHL90%20service%20manual-Final-0725.pdf 55 * 56 * 57 * 58 * Support for the Compal JHL90 added by Roald Frederickx 59 * (roald.frederickx@gmail.com): 60 * Driver got large revision. Added functionalities: backlight 61 * power, wake_on_XXX, a hwmon and power_supply interface. 62 * 63 * In case this gets merged into the kernel source: I want to dedicate this 64 * to Kasper Meerts, the awesome guy who showed me Linux and C! 65 */ 66 67 /* NOTE: currently the wake_on_XXX, hwmon and power_supply interfaces are 68 * only enabled on a JHL90 board until it is verified that they work on the 69 * other boards too. See the extra_features variable. */ 70 71 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 72 73 #include <linux/module.h> 74 #include <linux/kernel.h> 75 #include <linux/init.h> 76 #include <linux/acpi.h> 77 #include <linux/dmi.h> 78 #include <linux/backlight.h> 79 #include <linux/platform_device.h> 80 #include <linux/rfkill.h> 81 #include <linux/hwmon.h> 82 #include <linux/hwmon-sysfs.h> 83 #include <linux/power_supply.h> 84 #include <linux/fb.h> 85 86 87 /* ======= */ 88 /* Defines */ 89 /* ======= */ 90 #define DRIVER_NAME "compal-laptop" 91 #define DRIVER_VERSION "0.2.7" 92 93 #define BACKLIGHT_LEVEL_ADDR 0xB9 94 #define BACKLIGHT_LEVEL_MAX 7 95 #define BACKLIGHT_STATE_ADDR 0x59 96 #define BACKLIGHT_STATE_ON_DATA 0xE1 97 #define BACKLIGHT_STATE_OFF_DATA 0xE2 98 99 #define WAKE_UP_ADDR 0xA4 100 #define WAKE_UP_PME (1 << 0) 101 #define WAKE_UP_MODEM (1 << 1) 102 #define WAKE_UP_LAN (1 << 2) 103 #define WAKE_UP_WLAN (1 << 4) 104 #define WAKE_UP_KEY (1 << 6) 105 #define WAKE_UP_MOUSE (1 << 7) 106 107 #define WIRELESS_ADDR 0xBB 108 #define WIRELESS_WLAN (1 << 0) 109 #define WIRELESS_BT (1 << 1) 110 #define WIRELESS_WLAN_EXISTS (1 << 2) 111 #define WIRELESS_BT_EXISTS (1 << 3) 112 #define WIRELESS_KILLSWITCH (1 << 4) 113 114 #define PWM_ADDRESS 0x46 115 #define PWM_DISABLE_ADDR 0x59 116 #define PWM_DISABLE_DATA 0xA5 117 #define PWM_ENABLE_ADDR 0x59 118 #define PWM_ENABLE_DATA 0xA8 119 120 #define FAN_ADDRESS 0x46 121 #define FAN_DATA 0x81 122 #define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */ 123 #define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */ 124 #define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */ 125 126 #define TEMP_CPU 0xB0 127 #define TEMP_CPU_LOCAL 0xB1 128 #define TEMP_CPU_DTS 0xB5 129 #define TEMP_NORTHBRIDGE 0xB6 130 #define TEMP_VGA 0xB4 131 #define TEMP_SKIN 0xB2 132 133 #define BAT_MANUFACTURER_NAME_ADDR 0x10 134 #define BAT_MANUFACTURER_NAME_LEN 9 135 #define BAT_MODEL_NAME_ADDR 0x19 136 #define BAT_MODEL_NAME_LEN 6 137 #define BAT_SERIAL_NUMBER_ADDR 0xC4 138 #define BAT_SERIAL_NUMBER_LEN 5 139 #define BAT_CHARGE_NOW 0xC2 140 #define BAT_CHARGE_DESIGN 0xCA 141 #define BAT_VOLTAGE_NOW 0xC6 142 #define BAT_VOLTAGE_DESIGN 0xC8 143 #define BAT_CURRENT_NOW 0xD0 144 #define BAT_CURRENT_AVG 0xD2 145 #define BAT_POWER 0xD4 146 #define BAT_CAPACITY 0xCE 147 #define BAT_TEMP 0xD6 148 #define BAT_TEMP_AVG 0xD7 149 #define BAT_STATUS0 0xC1 150 #define BAT_STATUS1 0xF0 151 #define BAT_STATUS2 0xF1 152 #define BAT_STOP_CHARGE1 0xF2 153 #define BAT_STOP_CHARGE2 0xF3 154 155 #define BAT_S0_DISCHARGE (1 << 0) 156 #define BAT_S0_DISCHRG_CRITICAL (1 << 2) 157 #define BAT_S0_LOW (1 << 3) 158 #define BAT_S0_CHARGING (1 << 1) 159 #define BAT_S0_AC (1 << 7) 160 #define BAT_S1_EXISTS (1 << 0) 161 #define BAT_S1_FULL (1 << 1) 162 #define BAT_S1_EMPTY (1 << 2) 163 #define BAT_S1_LiION_OR_NiMH (1 << 7) 164 #define BAT_S2_LOW_LOW (1 << 0) 165 #define BAT_STOP_CHRG1_BAD_CELL (1 << 1) 166 #define BAT_STOP_CHRG1_COMM_FAIL (1 << 2) 167 #define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6) 168 #define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7) 169 170 171 /* ======= */ 172 /* Structs */ 173 /* ======= */ 174 struct compal_data{ 175 /* Fan control */ 176 struct device *hwmon_dev; 177 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by moterboard */ 178 unsigned char curr_pwm; 179 180 /* Power supply */ 181 struct power_supply psy; 182 struct power_supply_info psy_info; 183 char bat_model_name[BAT_MODEL_NAME_LEN + 1]; 184 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1]; 185 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1]; 186 }; 187 188 189 /* =============== */ 190 /* General globals */ 191 /* =============== */ 192 static bool force; 193 module_param(force, bool, 0); 194 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data"); 195 196 /* Support for the wake_on_XXX, hwmon and power_supply interface. Currently 197 * only gets enabled on a JHL90 board. Might work with the others too */ 198 static bool extra_features; 199 200 /* Nasty stuff. For some reason the fan control is very un-linear. I've 201 * come up with these values by looping through the possible inputs and 202 * watching the output of address 0x4F (do an ec_transaction writing 0x33 203 * into 0x4F and read a few bytes from the output, like so: 204 * u8 writeData = 0x33; 205 * ec_transaction(0x4F, &writeData, 1, buffer, 32); 206 * That address is labeled "fan1 table information" in the service manual. 207 * It should be clear which value in 'buffer' changes). This seems to be 208 * related to fan speed. It isn't a proper 'realtime' fan speed value 209 * though, because physically stopping or speeding up the fan doesn't 210 * change it. It might be the average voltage or current of the pwm output. 211 * Nevertheless, it is more fine-grained than the actual RPM reading */ 212 static const unsigned char pwm_lookup_table[256] = { 213 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 214 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95, 215 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70, 216 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94, 217 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139, 218 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76, 219 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22, 220 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219, 221 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186, 222 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33, 223 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38, 224 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46, 225 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48, 226 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44, 227 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251, 228 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187, 229 187, 187, 193, 50 230 }; 231 232 233 234 235 /* ========================= */ 236 /* Hardware access functions */ 237 /* ========================= */ 238 /* General access */ 239 static u8 ec_read_u8(u8 addr) 240 { 241 u8 value; 242 ec_read(addr, &value); 243 return value; 244 } 245 246 static s8 ec_read_s8(u8 addr) 247 { 248 return (s8)ec_read_u8(addr); 249 } 250 251 static u16 ec_read_u16(u8 addr) 252 { 253 int hi, lo; 254 lo = ec_read_u8(addr); 255 hi = ec_read_u8(addr + 1); 256 return (hi << 8) + lo; 257 } 258 259 static s16 ec_read_s16(u8 addr) 260 { 261 return (s16) ec_read_u16(addr); 262 } 263 264 static void ec_read_sequence(u8 addr, u8 *buf, int len) 265 { 266 int i; 267 for (i = 0; i < len; i++) 268 ec_read(addr + i, buf + i); 269 } 270 271 272 /* Backlight access */ 273 static int set_backlight_level(int level) 274 { 275 if (level < 0 || level > BACKLIGHT_LEVEL_MAX) 276 return -EINVAL; 277 278 ec_write(BACKLIGHT_LEVEL_ADDR, level); 279 280 return 0; 281 } 282 283 static int get_backlight_level(void) 284 { 285 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR); 286 } 287 288 static void set_backlight_state(bool on) 289 { 290 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA; 291 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0); 292 } 293 294 295 /* Fan control access */ 296 static void pwm_enable_control(void) 297 { 298 unsigned char writeData = PWM_ENABLE_DATA; 299 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0); 300 } 301 302 static void pwm_disable_control(void) 303 { 304 unsigned char writeData = PWM_DISABLE_DATA; 305 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0); 306 } 307 308 static void set_pwm(int pwm) 309 { 310 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0); 311 } 312 313 static int get_fan_rpm(void) 314 { 315 u8 value, data = FAN_DATA; 316 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1); 317 return 100 * (int)value; 318 } 319 320 321 322 323 /* =================== */ 324 /* Interface functions */ 325 /* =================== */ 326 327 /* Backlight interface */ 328 static int bl_get_brightness(struct backlight_device *b) 329 { 330 return get_backlight_level(); 331 } 332 333 static int bl_update_status(struct backlight_device *b) 334 { 335 int ret = set_backlight_level(b->props.brightness); 336 if (ret) 337 return ret; 338 339 set_backlight_state((b->props.power == FB_BLANK_UNBLANK) 340 && !(b->props.state & BL_CORE_SUSPENDED) 341 && !(b->props.state & BL_CORE_FBBLANK)); 342 return 0; 343 } 344 345 static const struct backlight_ops compalbl_ops = { 346 .get_brightness = bl_get_brightness, 347 .update_status = bl_update_status, 348 }; 349 350 351 /* Wireless interface */ 352 static int compal_rfkill_set(void *data, bool blocked) 353 { 354 unsigned long radio = (unsigned long) data; 355 u8 result = ec_read_u8(WIRELESS_ADDR); 356 u8 value; 357 358 if (!blocked) 359 value = (u8) (result | radio); 360 else 361 value = (u8) (result & ~radio); 362 ec_write(WIRELESS_ADDR, value); 363 364 return 0; 365 } 366 367 static void compal_rfkill_poll(struct rfkill *rfkill, void *data) 368 { 369 u8 result = ec_read_u8(WIRELESS_ADDR); 370 bool hw_blocked = !(result & WIRELESS_KILLSWITCH); 371 rfkill_set_hw_state(rfkill, hw_blocked); 372 } 373 374 static const struct rfkill_ops compal_rfkill_ops = { 375 .poll = compal_rfkill_poll, 376 .set_block = compal_rfkill_set, 377 }; 378 379 380 /* Wake_up interface */ 381 #define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \ 382 static ssize_t NAME##_show(struct device *dev, \ 383 struct device_attribute *attr, char *buf) \ 384 { \ 385 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \ 386 } \ 387 static ssize_t NAME##_store(struct device *dev, \ 388 struct device_attribute *attr, const char *buf, size_t count) \ 389 { \ 390 int state; \ 391 u8 old_val = ec_read_u8(ADDR); \ 392 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \ 393 return -EINVAL; \ 394 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \ 395 return count; \ 396 } 397 398 SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME) 399 SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM) 400 SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN) 401 SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN) 402 SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY) 403 SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE) 404 405 406 /* General hwmon interface */ 407 static ssize_t hwmon_name_show(struct device *dev, 408 struct device_attribute *attr, char *buf) 409 { 410 return sprintf(buf, "%s\n", DRIVER_NAME); 411 } 412 413 414 /* Fan control interface */ 415 static ssize_t pwm_enable_show(struct device *dev, 416 struct device_attribute *attr, char *buf) 417 { 418 struct compal_data *data = dev_get_drvdata(dev); 419 return sprintf(buf, "%d\n", data->pwm_enable); 420 } 421 422 static ssize_t pwm_enable_store(struct device *dev, 423 struct device_attribute *attr, const char *buf, size_t count) 424 { 425 struct compal_data *data = dev_get_drvdata(dev); 426 long val; 427 int err; 428 429 err = kstrtol(buf, 10, &val); 430 if (err) 431 return err; 432 if (val < 0) 433 return -EINVAL; 434 435 data->pwm_enable = val; 436 437 switch (val) { 438 case 0: /* Full speed */ 439 pwm_enable_control(); 440 set_pwm(255); 441 break; 442 case 1: /* As set by pwm1 */ 443 pwm_enable_control(); 444 set_pwm(data->curr_pwm); 445 break; 446 default: /* Control by motherboard */ 447 pwm_disable_control(); 448 break; 449 } 450 451 return count; 452 } 453 454 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 455 char *buf) 456 { 457 struct compal_data *data = dev_get_drvdata(dev); 458 return sprintf(buf, "%hhu\n", data->curr_pwm); 459 } 460 461 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 462 const char *buf, size_t count) 463 { 464 struct compal_data *data = dev_get_drvdata(dev); 465 long val; 466 int err; 467 468 err = kstrtol(buf, 10, &val); 469 if (err) 470 return err; 471 if (val < 0 || val > 255) 472 return -EINVAL; 473 474 data->curr_pwm = val; 475 476 if (data->pwm_enable != 1) 477 return count; 478 set_pwm(val); 479 480 return count; 481 } 482 483 static ssize_t fan_show(struct device *dev, struct device_attribute *attr, 484 char *buf) 485 { 486 return sprintf(buf, "%d\n", get_fan_rpm()); 487 } 488 489 490 /* Temperature interface */ 491 #define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \ 492 static ssize_t temp_##POSTFIX(struct device *dev, \ 493 struct device_attribute *attr, char *buf) \ 494 { \ 495 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \ 496 } \ 497 static ssize_t label_##POSTFIX(struct device *dev, \ 498 struct device_attribute *attr, char *buf) \ 499 { \ 500 return sprintf(buf, "%s\n", LABEL); \ 501 } 502 503 /* Labels as in service guide */ 504 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP"); 505 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL"); 506 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS"); 507 TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge"); 508 TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP"); 509 TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90"); 510 511 512 /* Power supply interface */ 513 static int bat_status(void) 514 { 515 u8 status0 = ec_read_u8(BAT_STATUS0); 516 u8 status1 = ec_read_u8(BAT_STATUS1); 517 518 if (status0 & BAT_S0_CHARGING) 519 return POWER_SUPPLY_STATUS_CHARGING; 520 if (status0 & BAT_S0_DISCHARGE) 521 return POWER_SUPPLY_STATUS_DISCHARGING; 522 if (status1 & BAT_S1_FULL) 523 return POWER_SUPPLY_STATUS_FULL; 524 return POWER_SUPPLY_STATUS_NOT_CHARGING; 525 } 526 527 static int bat_health(void) 528 { 529 u8 status = ec_read_u8(BAT_STOP_CHARGE1); 530 531 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE) 532 return POWER_SUPPLY_HEALTH_OVERHEAT; 533 if (status & BAT_STOP_CHRG1_OVERVOLTAGE) 534 return POWER_SUPPLY_HEALTH_OVERVOLTAGE; 535 if (status & BAT_STOP_CHRG1_BAD_CELL) 536 return POWER_SUPPLY_HEALTH_DEAD; 537 if (status & BAT_STOP_CHRG1_COMM_FAIL) 538 return POWER_SUPPLY_HEALTH_UNKNOWN; 539 return POWER_SUPPLY_HEALTH_GOOD; 540 } 541 542 static int bat_is_present(void) 543 { 544 u8 status = ec_read_u8(BAT_STATUS2); 545 return ((status & BAT_S1_EXISTS) != 0); 546 } 547 548 static int bat_technology(void) 549 { 550 u8 status = ec_read_u8(BAT_STATUS1); 551 552 if (status & BAT_S1_LiION_OR_NiMH) 553 return POWER_SUPPLY_TECHNOLOGY_LION; 554 return POWER_SUPPLY_TECHNOLOGY_NiMH; 555 } 556 557 static int bat_capacity_level(void) 558 { 559 u8 status0 = ec_read_u8(BAT_STATUS0); 560 u8 status1 = ec_read_u8(BAT_STATUS1); 561 u8 status2 = ec_read_u8(BAT_STATUS2); 562 563 if (status0 & BAT_S0_DISCHRG_CRITICAL 564 || status1 & BAT_S1_EMPTY 565 || status2 & BAT_S2_LOW_LOW) 566 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 567 if (status0 & BAT_S0_LOW) 568 return POWER_SUPPLY_CAPACITY_LEVEL_LOW; 569 if (status1 & BAT_S1_FULL) 570 return POWER_SUPPLY_CAPACITY_LEVEL_FULL; 571 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 572 } 573 574 static int bat_get_property(struct power_supply *psy, 575 enum power_supply_property psp, 576 union power_supply_propval *val) 577 { 578 struct compal_data *data; 579 data = container_of(psy, struct compal_data, psy); 580 581 switch (psp) { 582 case POWER_SUPPLY_PROP_STATUS: 583 val->intval = bat_status(); 584 break; 585 case POWER_SUPPLY_PROP_HEALTH: 586 val->intval = bat_health(); 587 break; 588 case POWER_SUPPLY_PROP_PRESENT: 589 val->intval = bat_is_present(); 590 break; 591 case POWER_SUPPLY_PROP_TECHNOLOGY: 592 val->intval = bat_technology(); 593 break; 594 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */ 595 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000; 596 break; 597 case POWER_SUPPLY_PROP_VOLTAGE_NOW: 598 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000; 599 break; 600 case POWER_SUPPLY_PROP_CURRENT_NOW: 601 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000; 602 break; 603 case POWER_SUPPLY_PROP_CURRENT_AVG: 604 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000; 605 break; 606 case POWER_SUPPLY_PROP_POWER_NOW: 607 val->intval = ec_read_u8(BAT_POWER) * 1000000; 608 break; 609 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: 610 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000; 611 break; 612 case POWER_SUPPLY_PROP_CHARGE_NOW: 613 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000; 614 break; 615 case POWER_SUPPLY_PROP_CAPACITY: 616 val->intval = ec_read_u8(BAT_CAPACITY); 617 break; 618 case POWER_SUPPLY_PROP_CAPACITY_LEVEL: 619 val->intval = bat_capacity_level(); 620 break; 621 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing 622 * the number of degrees, whereas BAT_TEMP is somewhat more 623 * complicated. It looks like this is a negative nember with a 624 * 100/256 divider and an offset of 222. Both were determined 625 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */ 626 case POWER_SUPPLY_PROP_TEMP: 627 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8; 628 break; 629 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */ 630 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10; 631 break; 632 /* Neither the model name nor manufacturer name work for me. */ 633 case POWER_SUPPLY_PROP_MODEL_NAME: 634 val->strval = data->bat_model_name; 635 break; 636 case POWER_SUPPLY_PROP_MANUFACTURER: 637 val->strval = data->bat_manufacturer_name; 638 break; 639 case POWER_SUPPLY_PROP_SERIAL_NUMBER: 640 val->strval = data->bat_serial_number; 641 break; 642 default: 643 break; 644 } 645 return 0; 646 } 647 648 649 650 651 652 /* ============== */ 653 /* Driver Globals */ 654 /* ============== */ 655 static DEVICE_ATTR(wake_up_pme, 656 0644, wake_up_pme_show, wake_up_pme_store); 657 static DEVICE_ATTR(wake_up_modem, 658 0644, wake_up_modem_show, wake_up_modem_store); 659 static DEVICE_ATTR(wake_up_lan, 660 0644, wake_up_lan_show, wake_up_lan_store); 661 static DEVICE_ATTR(wake_up_wlan, 662 0644, wake_up_wlan_show, wake_up_wlan_store); 663 static DEVICE_ATTR(wake_up_key, 664 0644, wake_up_key_show, wake_up_key_store); 665 static DEVICE_ATTR(wake_up_mouse, 666 0644, wake_up_mouse_show, wake_up_mouse_store); 667 668 static SENSOR_DEVICE_ATTR(name, S_IRUGO, hwmon_name_show, NULL, 1); 669 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL, 1); 670 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL, 1); 671 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL, 1); 672 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL, 1); 673 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL, 1); 674 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL, 1); 675 static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL, 1); 676 static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL, 1); 677 static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL, 1); 678 static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL, 1); 679 static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL, 1); 680 static SENSOR_DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL, 1); 681 static SENSOR_DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL, 1); 682 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store, 1); 683 static SENSOR_DEVICE_ATTR(pwm1_enable, 684 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store, 0); 685 686 static struct attribute *compal_attributes[] = { 687 &dev_attr_wake_up_pme.attr, 688 &dev_attr_wake_up_modem.attr, 689 &dev_attr_wake_up_lan.attr, 690 &dev_attr_wake_up_wlan.attr, 691 &dev_attr_wake_up_key.attr, 692 &dev_attr_wake_up_mouse.attr, 693 /* Maybe put the sensor-stuff in a separate hwmon-driver? That way, 694 * the hwmon sysfs won't be cluttered with the above files. */ 695 &sensor_dev_attr_name.dev_attr.attr, 696 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 697 &sensor_dev_attr_pwm1.dev_attr.attr, 698 &sensor_dev_attr_fan1_input.dev_attr.attr, 699 &sensor_dev_attr_temp1_input.dev_attr.attr, 700 &sensor_dev_attr_temp2_input.dev_attr.attr, 701 &sensor_dev_attr_temp3_input.dev_attr.attr, 702 &sensor_dev_attr_temp4_input.dev_attr.attr, 703 &sensor_dev_attr_temp5_input.dev_attr.attr, 704 &sensor_dev_attr_temp6_input.dev_attr.attr, 705 &sensor_dev_attr_temp1_label.dev_attr.attr, 706 &sensor_dev_attr_temp2_label.dev_attr.attr, 707 &sensor_dev_attr_temp3_label.dev_attr.attr, 708 &sensor_dev_attr_temp4_label.dev_attr.attr, 709 &sensor_dev_attr_temp5_label.dev_attr.attr, 710 &sensor_dev_attr_temp6_label.dev_attr.attr, 711 NULL 712 }; 713 714 static struct attribute_group compal_attribute_group = { 715 .attrs = compal_attributes 716 }; 717 718 static int compal_probe(struct platform_device *); 719 static int compal_remove(struct platform_device *); 720 static struct platform_driver compal_driver = { 721 .driver = { 722 .name = DRIVER_NAME, 723 .owner = THIS_MODULE, 724 }, 725 .probe = compal_probe, 726 .remove = compal_remove, 727 }; 728 729 static enum power_supply_property compal_bat_properties[] = { 730 POWER_SUPPLY_PROP_STATUS, 731 POWER_SUPPLY_PROP_HEALTH, 732 POWER_SUPPLY_PROP_PRESENT, 733 POWER_SUPPLY_PROP_TECHNOLOGY, 734 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, 735 POWER_SUPPLY_PROP_VOLTAGE_NOW, 736 POWER_SUPPLY_PROP_CURRENT_NOW, 737 POWER_SUPPLY_PROP_CURRENT_AVG, 738 POWER_SUPPLY_PROP_POWER_NOW, 739 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 740 POWER_SUPPLY_PROP_CHARGE_NOW, 741 POWER_SUPPLY_PROP_CAPACITY, 742 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 743 POWER_SUPPLY_PROP_TEMP, 744 POWER_SUPPLY_PROP_TEMP_AMBIENT, 745 POWER_SUPPLY_PROP_MODEL_NAME, 746 POWER_SUPPLY_PROP_MANUFACTURER, 747 POWER_SUPPLY_PROP_SERIAL_NUMBER, 748 }; 749 750 static struct backlight_device *compalbl_device; 751 752 static struct platform_device *compal_device; 753 754 static struct rfkill *wifi_rfkill; 755 static struct rfkill *bt_rfkill; 756 757 758 759 760 761 /* =================================== */ 762 /* Initialization & clean-up functions */ 763 /* =================================== */ 764 765 static int dmi_check_cb(const struct dmi_system_id *id) 766 { 767 pr_info("Identified laptop model '%s'\n", id->ident); 768 extra_features = false; 769 return 1; 770 } 771 772 static int dmi_check_cb_extra(const struct dmi_system_id *id) 773 { 774 pr_info("Identified laptop model '%s', enabling extra features\n", 775 id->ident); 776 extra_features = true; 777 return 1; 778 } 779 780 static struct dmi_system_id __initdata compal_dmi_table[] = { 781 { 782 .ident = "FL90/IFL90", 783 .matches = { 784 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 785 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 786 }, 787 .callback = dmi_check_cb 788 }, 789 { 790 .ident = "FL90/IFL90", 791 .matches = { 792 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 793 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 794 }, 795 .callback = dmi_check_cb 796 }, 797 { 798 .ident = "FL91/IFL91", 799 .matches = { 800 DMI_MATCH(DMI_BOARD_NAME, "IFL91"), 801 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 802 }, 803 .callback = dmi_check_cb 804 }, 805 { 806 .ident = "FL92/JFL92", 807 .matches = { 808 DMI_MATCH(DMI_BOARD_NAME, "JFL92"), 809 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 810 }, 811 .callback = dmi_check_cb 812 }, 813 { 814 .ident = "FT00/IFT00", 815 .matches = { 816 DMI_MATCH(DMI_BOARD_NAME, "IFT00"), 817 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 818 }, 819 .callback = dmi_check_cb 820 }, 821 { 822 .ident = "Dell Mini 9", 823 .matches = { 824 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 825 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"), 826 }, 827 .callback = dmi_check_cb 828 }, 829 { 830 .ident = "Dell Mini 10", 831 .matches = { 832 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 833 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"), 834 }, 835 .callback = dmi_check_cb 836 }, 837 { 838 .ident = "Dell Mini 10v", 839 .matches = { 840 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 841 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"), 842 }, 843 .callback = dmi_check_cb 844 }, 845 { 846 .ident = "Dell Mini 1012", 847 .matches = { 848 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 849 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"), 850 }, 851 .callback = dmi_check_cb 852 }, 853 { 854 .ident = "Dell Inspiron 11z", 855 .matches = { 856 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 857 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"), 858 }, 859 .callback = dmi_check_cb 860 }, 861 { 862 .ident = "Dell Mini 12", 863 .matches = { 864 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 865 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"), 866 }, 867 .callback = dmi_check_cb 868 }, 869 { 870 .ident = "JHL90", 871 .matches = { 872 DMI_MATCH(DMI_BOARD_NAME, "JHL90"), 873 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 874 }, 875 .callback = dmi_check_cb_extra 876 }, 877 { 878 .ident = "KHLB2", 879 .matches = { 880 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"), 881 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 882 }, 883 .callback = dmi_check_cb_extra 884 }, 885 { } 886 }; 887 MODULE_DEVICE_TABLE(dmi, compal_dmi_table); 888 889 static void initialize_power_supply_data(struct compal_data *data) 890 { 891 data->psy.name = DRIVER_NAME; 892 data->psy.type = POWER_SUPPLY_TYPE_BATTERY; 893 data->psy.properties = compal_bat_properties; 894 data->psy.num_properties = ARRAY_SIZE(compal_bat_properties); 895 data->psy.get_property = bat_get_property; 896 897 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR, 898 data->bat_manufacturer_name, 899 BAT_MANUFACTURER_NAME_LEN); 900 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0; 901 902 ec_read_sequence(BAT_MODEL_NAME_ADDR, 903 data->bat_model_name, 904 BAT_MODEL_NAME_LEN); 905 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0; 906 907 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d", 908 ec_read_u16(BAT_SERIAL_NUMBER_ADDR)); 909 } 910 911 static void initialize_fan_control_data(struct compal_data *data) 912 { 913 data->pwm_enable = 2; /* Keep motherboard in control for now */ 914 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception 915 if we take over... */ 916 } 917 918 static int setup_rfkill(void) 919 { 920 int ret; 921 922 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev, 923 RFKILL_TYPE_WLAN, &compal_rfkill_ops, 924 (void *) WIRELESS_WLAN); 925 if (!wifi_rfkill) 926 return -ENOMEM; 927 928 ret = rfkill_register(wifi_rfkill); 929 if (ret) 930 goto err_wifi; 931 932 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev, 933 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops, 934 (void *) WIRELESS_BT); 935 if (!bt_rfkill) { 936 ret = -ENOMEM; 937 goto err_allocate_bt; 938 } 939 ret = rfkill_register(bt_rfkill); 940 if (ret) 941 goto err_register_bt; 942 943 return 0; 944 945 err_register_bt: 946 rfkill_destroy(bt_rfkill); 947 948 err_allocate_bt: 949 rfkill_unregister(wifi_rfkill); 950 951 err_wifi: 952 rfkill_destroy(wifi_rfkill); 953 954 return ret; 955 } 956 957 static int __init compal_init(void) 958 { 959 int ret; 960 961 if (acpi_disabled) { 962 pr_err("ACPI needs to be enabled for this driver to work!\n"); 963 return -ENODEV; 964 } 965 966 if (!force && !dmi_check_system(compal_dmi_table)) { 967 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n"); 968 return -ENODEV; 969 } 970 971 if (!acpi_video_backlight_support()) { 972 struct backlight_properties props; 973 memset(&props, 0, sizeof(struct backlight_properties)); 974 props.type = BACKLIGHT_PLATFORM; 975 props.max_brightness = BACKLIGHT_LEVEL_MAX; 976 compalbl_device = backlight_device_register(DRIVER_NAME, 977 NULL, NULL, 978 &compalbl_ops, 979 &props); 980 if (IS_ERR(compalbl_device)) 981 return PTR_ERR(compalbl_device); 982 } 983 984 ret = platform_driver_register(&compal_driver); 985 if (ret) 986 goto err_backlight; 987 988 compal_device = platform_device_alloc(DRIVER_NAME, -1); 989 if (!compal_device) { 990 ret = -ENOMEM; 991 goto err_platform_driver; 992 } 993 994 ret = platform_device_add(compal_device); /* This calls compal_probe */ 995 if (ret) 996 goto err_platform_device; 997 998 ret = setup_rfkill(); 999 if (ret) 1000 goto err_rfkill; 1001 1002 pr_info("Driver " DRIVER_VERSION " successfully loaded\n"); 1003 return 0; 1004 1005 err_rfkill: 1006 platform_device_del(compal_device); 1007 1008 err_platform_device: 1009 platform_device_put(compal_device); 1010 1011 err_platform_driver: 1012 platform_driver_unregister(&compal_driver); 1013 1014 err_backlight: 1015 backlight_device_unregister(compalbl_device); 1016 1017 return ret; 1018 } 1019 1020 static int compal_probe(struct platform_device *pdev) 1021 { 1022 int err; 1023 struct compal_data *data; 1024 1025 if (!extra_features) 1026 return 0; 1027 1028 /* Fan control */ 1029 data = kzalloc(sizeof(struct compal_data), GFP_KERNEL); 1030 if (!data) 1031 return -ENOMEM; 1032 1033 initialize_fan_control_data(data); 1034 1035 err = sysfs_create_group(&pdev->dev.kobj, &compal_attribute_group); 1036 if (err) { 1037 kfree(data); 1038 return err; 1039 } 1040 1041 data->hwmon_dev = hwmon_device_register(&pdev->dev); 1042 if (IS_ERR(data->hwmon_dev)) { 1043 err = PTR_ERR(data->hwmon_dev); 1044 sysfs_remove_group(&pdev->dev.kobj, 1045 &compal_attribute_group); 1046 kfree(data); 1047 return err; 1048 } 1049 1050 /* Power supply */ 1051 initialize_power_supply_data(data); 1052 power_supply_register(&compal_device->dev, &data->psy); 1053 1054 platform_set_drvdata(pdev, data); 1055 1056 return 0; 1057 } 1058 1059 static void __exit compal_cleanup(void) 1060 { 1061 platform_device_unregister(compal_device); 1062 platform_driver_unregister(&compal_driver); 1063 backlight_device_unregister(compalbl_device); 1064 rfkill_unregister(wifi_rfkill); 1065 rfkill_unregister(bt_rfkill); 1066 rfkill_destroy(wifi_rfkill); 1067 rfkill_destroy(bt_rfkill); 1068 1069 pr_info("Driver unloaded\n"); 1070 } 1071 1072 static int compal_remove(struct platform_device *pdev) 1073 { 1074 struct compal_data *data; 1075 1076 if (!extra_features) 1077 return 0; 1078 1079 pr_info("Unloading: resetting fan control to motherboard\n"); 1080 pwm_disable_control(); 1081 1082 data = platform_get_drvdata(pdev); 1083 hwmon_device_unregister(data->hwmon_dev); 1084 power_supply_unregister(&data->psy); 1085 1086 kfree(data); 1087 1088 sysfs_remove_group(&pdev->dev.kobj, &compal_attribute_group); 1089 1090 return 0; 1091 } 1092 1093 1094 module_init(compal_init); 1095 module_exit(compal_cleanup); 1096 1097 MODULE_AUTHOR("Cezary Jackiewicz"); 1098 MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)"); 1099 MODULE_DESCRIPTION("Compal Laptop Support"); 1100 MODULE_VERSION(DRIVER_VERSION); 1101 MODULE_LICENSE("GPL"); 1102