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 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */ 177 unsigned char curr_pwm; 178 179 /* Power supply */ 180 struct power_supply psy; 181 struct power_supply_info psy_info; 182 char bat_model_name[BAT_MODEL_NAME_LEN + 1]; 183 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1]; 184 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1]; 185 }; 186 187 188 /* =============== */ 189 /* General globals */ 190 /* =============== */ 191 static bool force; 192 module_param(force, bool, 0); 193 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data"); 194 195 /* Support for the wake_on_XXX, hwmon and power_supply interface. Currently 196 * only gets enabled on a JHL90 board. Might work with the others too */ 197 static bool extra_features; 198 199 /* Nasty stuff. For some reason the fan control is very un-linear. I've 200 * come up with these values by looping through the possible inputs and 201 * watching the output of address 0x4F (do an ec_transaction writing 0x33 202 * into 0x4F and read a few bytes from the output, like so: 203 * u8 writeData = 0x33; 204 * ec_transaction(0x4F, &writeData, 1, buffer, 32); 205 * That address is labeled "fan1 table information" in the service manual. 206 * It should be clear which value in 'buffer' changes). This seems to be 207 * related to fan speed. It isn't a proper 'realtime' fan speed value 208 * though, because physically stopping or speeding up the fan doesn't 209 * change it. It might be the average voltage or current of the pwm output. 210 * Nevertheless, it is more fine-grained than the actual RPM reading */ 211 static const unsigned char pwm_lookup_table[256] = { 212 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 213 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95, 214 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70, 215 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94, 216 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139, 217 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76, 218 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22, 219 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219, 220 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186, 221 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33, 222 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38, 223 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46, 224 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48, 225 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44, 226 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251, 227 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187, 228 187, 187, 193, 50 229 }; 230 231 232 233 234 /* ========================= */ 235 /* Hardware access functions */ 236 /* ========================= */ 237 /* General access */ 238 static u8 ec_read_u8(u8 addr) 239 { 240 u8 value; 241 ec_read(addr, &value); 242 return value; 243 } 244 245 static s8 ec_read_s8(u8 addr) 246 { 247 return (s8)ec_read_u8(addr); 248 } 249 250 static u16 ec_read_u16(u8 addr) 251 { 252 int hi, lo; 253 lo = ec_read_u8(addr); 254 hi = ec_read_u8(addr + 1); 255 return (hi << 8) + lo; 256 } 257 258 static s16 ec_read_s16(u8 addr) 259 { 260 return (s16) ec_read_u16(addr); 261 } 262 263 static void ec_read_sequence(u8 addr, u8 *buf, int len) 264 { 265 int i; 266 for (i = 0; i < len; i++) 267 ec_read(addr + i, buf + i); 268 } 269 270 271 /* Backlight access */ 272 static int set_backlight_level(int level) 273 { 274 if (level < 0 || level > BACKLIGHT_LEVEL_MAX) 275 return -EINVAL; 276 277 ec_write(BACKLIGHT_LEVEL_ADDR, level); 278 279 return 0; 280 } 281 282 static int get_backlight_level(void) 283 { 284 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR); 285 } 286 287 static void set_backlight_state(bool on) 288 { 289 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA; 290 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0); 291 } 292 293 294 /* Fan control access */ 295 static void pwm_enable_control(void) 296 { 297 unsigned char writeData = PWM_ENABLE_DATA; 298 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0); 299 } 300 301 static void pwm_disable_control(void) 302 { 303 unsigned char writeData = PWM_DISABLE_DATA; 304 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0); 305 } 306 307 static void set_pwm(int pwm) 308 { 309 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0); 310 } 311 312 static int get_fan_rpm(void) 313 { 314 u8 value, data = FAN_DATA; 315 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1); 316 return 100 * (int)value; 317 } 318 319 320 321 322 /* =================== */ 323 /* Interface functions */ 324 /* =================== */ 325 326 /* Backlight interface */ 327 static int bl_get_brightness(struct backlight_device *b) 328 { 329 return get_backlight_level(); 330 } 331 332 static int bl_update_status(struct backlight_device *b) 333 { 334 int ret = set_backlight_level(b->props.brightness); 335 if (ret) 336 return ret; 337 338 set_backlight_state((b->props.power == FB_BLANK_UNBLANK) 339 && !(b->props.state & BL_CORE_SUSPENDED) 340 && !(b->props.state & BL_CORE_FBBLANK)); 341 return 0; 342 } 343 344 static const struct backlight_ops compalbl_ops = { 345 .get_brightness = bl_get_brightness, 346 .update_status = bl_update_status, 347 }; 348 349 350 /* Wireless interface */ 351 static int compal_rfkill_set(void *data, bool blocked) 352 { 353 unsigned long radio = (unsigned long) data; 354 u8 result = ec_read_u8(WIRELESS_ADDR); 355 u8 value; 356 357 if (!blocked) 358 value = (u8) (result | radio); 359 else 360 value = (u8) (result & ~radio); 361 ec_write(WIRELESS_ADDR, value); 362 363 return 0; 364 } 365 366 static void compal_rfkill_poll(struct rfkill *rfkill, void *data) 367 { 368 u8 result = ec_read_u8(WIRELESS_ADDR); 369 bool hw_blocked = !(result & WIRELESS_KILLSWITCH); 370 rfkill_set_hw_state(rfkill, hw_blocked); 371 } 372 373 static const struct rfkill_ops compal_rfkill_ops = { 374 .poll = compal_rfkill_poll, 375 .set_block = compal_rfkill_set, 376 }; 377 378 379 /* Wake_up interface */ 380 #define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \ 381 static ssize_t NAME##_show(struct device *dev, \ 382 struct device_attribute *attr, char *buf) \ 383 { \ 384 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \ 385 } \ 386 static ssize_t NAME##_store(struct device *dev, \ 387 struct device_attribute *attr, const char *buf, size_t count) \ 388 { \ 389 int state; \ 390 u8 old_val = ec_read_u8(ADDR); \ 391 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \ 392 return -EINVAL; \ 393 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \ 394 return count; \ 395 } 396 397 SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME) 398 SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM) 399 SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN) 400 SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN) 401 SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY) 402 SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE) 403 404 /* Fan control interface */ 405 static ssize_t pwm_enable_show(struct device *dev, 406 struct device_attribute *attr, char *buf) 407 { 408 struct compal_data *data = dev_get_drvdata(dev); 409 return sprintf(buf, "%d\n", data->pwm_enable); 410 } 411 412 static ssize_t pwm_enable_store(struct device *dev, 413 struct device_attribute *attr, const char *buf, size_t count) 414 { 415 struct compal_data *data = dev_get_drvdata(dev); 416 long val; 417 int err; 418 419 err = kstrtol(buf, 10, &val); 420 if (err) 421 return err; 422 if (val < 0) 423 return -EINVAL; 424 425 data->pwm_enable = val; 426 427 switch (val) { 428 case 0: /* Full speed */ 429 pwm_enable_control(); 430 set_pwm(255); 431 break; 432 case 1: /* As set by pwm1 */ 433 pwm_enable_control(); 434 set_pwm(data->curr_pwm); 435 break; 436 default: /* Control by motherboard */ 437 pwm_disable_control(); 438 break; 439 } 440 441 return count; 442 } 443 444 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 445 char *buf) 446 { 447 struct compal_data *data = dev_get_drvdata(dev); 448 return sprintf(buf, "%hhu\n", data->curr_pwm); 449 } 450 451 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 452 const char *buf, size_t count) 453 { 454 struct compal_data *data = dev_get_drvdata(dev); 455 long val; 456 int err; 457 458 err = kstrtol(buf, 10, &val); 459 if (err) 460 return err; 461 if (val < 0 || val > 255) 462 return -EINVAL; 463 464 data->curr_pwm = val; 465 466 if (data->pwm_enable != 1) 467 return count; 468 set_pwm(val); 469 470 return count; 471 } 472 473 static ssize_t fan_show(struct device *dev, struct device_attribute *attr, 474 char *buf) 475 { 476 return sprintf(buf, "%d\n", get_fan_rpm()); 477 } 478 479 480 /* Temperature interface */ 481 #define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \ 482 static ssize_t temp_##POSTFIX(struct device *dev, \ 483 struct device_attribute *attr, char *buf) \ 484 { \ 485 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \ 486 } \ 487 static ssize_t label_##POSTFIX(struct device *dev, \ 488 struct device_attribute *attr, char *buf) \ 489 { \ 490 return sprintf(buf, "%s\n", LABEL); \ 491 } 492 493 /* Labels as in service guide */ 494 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP"); 495 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL"); 496 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS"); 497 TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge"); 498 TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP"); 499 TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90"); 500 501 502 /* Power supply interface */ 503 static int bat_status(void) 504 { 505 u8 status0 = ec_read_u8(BAT_STATUS0); 506 u8 status1 = ec_read_u8(BAT_STATUS1); 507 508 if (status0 & BAT_S0_CHARGING) 509 return POWER_SUPPLY_STATUS_CHARGING; 510 if (status0 & BAT_S0_DISCHARGE) 511 return POWER_SUPPLY_STATUS_DISCHARGING; 512 if (status1 & BAT_S1_FULL) 513 return POWER_SUPPLY_STATUS_FULL; 514 return POWER_SUPPLY_STATUS_NOT_CHARGING; 515 } 516 517 static int bat_health(void) 518 { 519 u8 status = ec_read_u8(BAT_STOP_CHARGE1); 520 521 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE) 522 return POWER_SUPPLY_HEALTH_OVERHEAT; 523 if (status & BAT_STOP_CHRG1_OVERVOLTAGE) 524 return POWER_SUPPLY_HEALTH_OVERVOLTAGE; 525 if (status & BAT_STOP_CHRG1_BAD_CELL) 526 return POWER_SUPPLY_HEALTH_DEAD; 527 if (status & BAT_STOP_CHRG1_COMM_FAIL) 528 return POWER_SUPPLY_HEALTH_UNKNOWN; 529 return POWER_SUPPLY_HEALTH_GOOD; 530 } 531 532 static int bat_is_present(void) 533 { 534 u8 status = ec_read_u8(BAT_STATUS2); 535 return ((status & BAT_S1_EXISTS) != 0); 536 } 537 538 static int bat_technology(void) 539 { 540 u8 status = ec_read_u8(BAT_STATUS1); 541 542 if (status & BAT_S1_LiION_OR_NiMH) 543 return POWER_SUPPLY_TECHNOLOGY_LION; 544 return POWER_SUPPLY_TECHNOLOGY_NiMH; 545 } 546 547 static int bat_capacity_level(void) 548 { 549 u8 status0 = ec_read_u8(BAT_STATUS0); 550 u8 status1 = ec_read_u8(BAT_STATUS1); 551 u8 status2 = ec_read_u8(BAT_STATUS2); 552 553 if (status0 & BAT_S0_DISCHRG_CRITICAL 554 || status1 & BAT_S1_EMPTY 555 || status2 & BAT_S2_LOW_LOW) 556 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 557 if (status0 & BAT_S0_LOW) 558 return POWER_SUPPLY_CAPACITY_LEVEL_LOW; 559 if (status1 & BAT_S1_FULL) 560 return POWER_SUPPLY_CAPACITY_LEVEL_FULL; 561 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 562 } 563 564 static int bat_get_property(struct power_supply *psy, 565 enum power_supply_property psp, 566 union power_supply_propval *val) 567 { 568 struct compal_data *data; 569 data = container_of(psy, struct compal_data, psy); 570 571 switch (psp) { 572 case POWER_SUPPLY_PROP_STATUS: 573 val->intval = bat_status(); 574 break; 575 case POWER_SUPPLY_PROP_HEALTH: 576 val->intval = bat_health(); 577 break; 578 case POWER_SUPPLY_PROP_PRESENT: 579 val->intval = bat_is_present(); 580 break; 581 case POWER_SUPPLY_PROP_TECHNOLOGY: 582 val->intval = bat_technology(); 583 break; 584 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */ 585 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000; 586 break; 587 case POWER_SUPPLY_PROP_VOLTAGE_NOW: 588 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000; 589 break; 590 case POWER_SUPPLY_PROP_CURRENT_NOW: 591 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000; 592 break; 593 case POWER_SUPPLY_PROP_CURRENT_AVG: 594 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000; 595 break; 596 case POWER_SUPPLY_PROP_POWER_NOW: 597 val->intval = ec_read_u8(BAT_POWER) * 1000000; 598 break; 599 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: 600 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000; 601 break; 602 case POWER_SUPPLY_PROP_CHARGE_NOW: 603 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000; 604 break; 605 case POWER_SUPPLY_PROP_CAPACITY: 606 val->intval = ec_read_u8(BAT_CAPACITY); 607 break; 608 case POWER_SUPPLY_PROP_CAPACITY_LEVEL: 609 val->intval = bat_capacity_level(); 610 break; 611 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing 612 * the number of degrees, whereas BAT_TEMP is somewhat more 613 * complicated. It looks like this is a negative nember with a 614 * 100/256 divider and an offset of 222. Both were determined 615 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */ 616 case POWER_SUPPLY_PROP_TEMP: 617 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8; 618 break; 619 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */ 620 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10; 621 break; 622 /* Neither the model name nor manufacturer name work for me. */ 623 case POWER_SUPPLY_PROP_MODEL_NAME: 624 val->strval = data->bat_model_name; 625 break; 626 case POWER_SUPPLY_PROP_MANUFACTURER: 627 val->strval = data->bat_manufacturer_name; 628 break; 629 case POWER_SUPPLY_PROP_SERIAL_NUMBER: 630 val->strval = data->bat_serial_number; 631 break; 632 default: 633 break; 634 } 635 return 0; 636 } 637 638 639 640 641 642 /* ============== */ 643 /* Driver Globals */ 644 /* ============== */ 645 static DEVICE_ATTR(wake_up_pme, 646 0644, wake_up_pme_show, wake_up_pme_store); 647 static DEVICE_ATTR(wake_up_modem, 648 0644, wake_up_modem_show, wake_up_modem_store); 649 static DEVICE_ATTR(wake_up_lan, 650 0644, wake_up_lan_show, wake_up_lan_store); 651 static DEVICE_ATTR(wake_up_wlan, 652 0644, wake_up_wlan_show, wake_up_wlan_store); 653 static DEVICE_ATTR(wake_up_key, 654 0644, wake_up_key_show, wake_up_key_store); 655 static DEVICE_ATTR(wake_up_mouse, 656 0644, wake_up_mouse_show, wake_up_mouse_store); 657 658 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL); 659 static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL); 660 static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL); 661 static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL); 662 static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL); 663 static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL); 664 static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL); 665 static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL); 666 static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL); 667 static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL); 668 static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL); 669 static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL); 670 static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL); 671 static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store); 672 static DEVICE_ATTR(pwm1_enable, 673 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store); 674 675 static struct attribute *compal_platform_attrs[] = { 676 &dev_attr_wake_up_pme.attr, 677 &dev_attr_wake_up_modem.attr, 678 &dev_attr_wake_up_lan.attr, 679 &dev_attr_wake_up_wlan.attr, 680 &dev_attr_wake_up_key.attr, 681 &dev_attr_wake_up_mouse.attr, 682 NULL 683 }; 684 static struct attribute_group compal_platform_attr_group = { 685 .attrs = compal_platform_attrs 686 }; 687 688 static struct attribute *compal_hwmon_attrs[] = { 689 &dev_attr_pwm1_enable.attr, 690 &dev_attr_pwm1.attr, 691 &dev_attr_fan1_input.attr, 692 &dev_attr_temp1_input.attr, 693 &dev_attr_temp2_input.attr, 694 &dev_attr_temp3_input.attr, 695 &dev_attr_temp4_input.attr, 696 &dev_attr_temp5_input.attr, 697 &dev_attr_temp6_input.attr, 698 &dev_attr_temp1_label.attr, 699 &dev_attr_temp2_label.attr, 700 &dev_attr_temp3_label.attr, 701 &dev_attr_temp4_label.attr, 702 &dev_attr_temp5_label.attr, 703 &dev_attr_temp6_label.attr, 704 NULL 705 }; 706 ATTRIBUTE_GROUPS(compal_hwmon); 707 708 static int compal_probe(struct platform_device *); 709 static int compal_remove(struct platform_device *); 710 static struct platform_driver compal_driver = { 711 .driver = { 712 .name = DRIVER_NAME, 713 }, 714 .probe = compal_probe, 715 .remove = compal_remove, 716 }; 717 718 static enum power_supply_property compal_bat_properties[] = { 719 POWER_SUPPLY_PROP_STATUS, 720 POWER_SUPPLY_PROP_HEALTH, 721 POWER_SUPPLY_PROP_PRESENT, 722 POWER_SUPPLY_PROP_TECHNOLOGY, 723 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, 724 POWER_SUPPLY_PROP_VOLTAGE_NOW, 725 POWER_SUPPLY_PROP_CURRENT_NOW, 726 POWER_SUPPLY_PROP_CURRENT_AVG, 727 POWER_SUPPLY_PROP_POWER_NOW, 728 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 729 POWER_SUPPLY_PROP_CHARGE_NOW, 730 POWER_SUPPLY_PROP_CAPACITY, 731 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 732 POWER_SUPPLY_PROP_TEMP, 733 POWER_SUPPLY_PROP_TEMP_AMBIENT, 734 POWER_SUPPLY_PROP_MODEL_NAME, 735 POWER_SUPPLY_PROP_MANUFACTURER, 736 POWER_SUPPLY_PROP_SERIAL_NUMBER, 737 }; 738 739 static struct backlight_device *compalbl_device; 740 741 static struct platform_device *compal_device; 742 743 static struct rfkill *wifi_rfkill; 744 static struct rfkill *bt_rfkill; 745 746 747 748 749 750 /* =================================== */ 751 /* Initialization & clean-up functions */ 752 /* =================================== */ 753 754 static int dmi_check_cb(const struct dmi_system_id *id) 755 { 756 pr_info("Identified laptop model '%s'\n", id->ident); 757 extra_features = false; 758 return 1; 759 } 760 761 static int dmi_check_cb_extra(const struct dmi_system_id *id) 762 { 763 pr_info("Identified laptop model '%s', enabling extra features\n", 764 id->ident); 765 extra_features = true; 766 return 1; 767 } 768 769 static struct dmi_system_id __initdata compal_dmi_table[] = { 770 { 771 .ident = "FL90/IFL90", 772 .matches = { 773 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 774 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 775 }, 776 .callback = dmi_check_cb 777 }, 778 { 779 .ident = "FL90/IFL90", 780 .matches = { 781 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 782 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 783 }, 784 .callback = dmi_check_cb 785 }, 786 { 787 .ident = "FL91/IFL91", 788 .matches = { 789 DMI_MATCH(DMI_BOARD_NAME, "IFL91"), 790 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 791 }, 792 .callback = dmi_check_cb 793 }, 794 { 795 .ident = "FL92/JFL92", 796 .matches = { 797 DMI_MATCH(DMI_BOARD_NAME, "JFL92"), 798 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 799 }, 800 .callback = dmi_check_cb 801 }, 802 { 803 .ident = "FT00/IFT00", 804 .matches = { 805 DMI_MATCH(DMI_BOARD_NAME, "IFT00"), 806 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 807 }, 808 .callback = dmi_check_cb 809 }, 810 { 811 .ident = "Dell Mini 9", 812 .matches = { 813 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 814 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"), 815 }, 816 .callback = dmi_check_cb 817 }, 818 { 819 .ident = "Dell Mini 10", 820 .matches = { 821 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 822 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"), 823 }, 824 .callback = dmi_check_cb 825 }, 826 { 827 .ident = "Dell Mini 10v", 828 .matches = { 829 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 830 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"), 831 }, 832 .callback = dmi_check_cb 833 }, 834 { 835 .ident = "Dell Mini 1012", 836 .matches = { 837 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 838 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"), 839 }, 840 .callback = dmi_check_cb 841 }, 842 { 843 .ident = "Dell Inspiron 11z", 844 .matches = { 845 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 846 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"), 847 }, 848 .callback = dmi_check_cb 849 }, 850 { 851 .ident = "Dell Mini 12", 852 .matches = { 853 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 854 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"), 855 }, 856 .callback = dmi_check_cb 857 }, 858 { 859 .ident = "JHL90", 860 .matches = { 861 DMI_MATCH(DMI_BOARD_NAME, "JHL90"), 862 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 863 }, 864 .callback = dmi_check_cb_extra 865 }, 866 { 867 .ident = "KHLB2", 868 .matches = { 869 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"), 870 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 871 }, 872 .callback = dmi_check_cb_extra 873 }, 874 { } 875 }; 876 MODULE_DEVICE_TABLE(dmi, compal_dmi_table); 877 878 static void initialize_power_supply_data(struct compal_data *data) 879 { 880 data->psy.name = DRIVER_NAME; 881 data->psy.type = POWER_SUPPLY_TYPE_BATTERY; 882 data->psy.properties = compal_bat_properties; 883 data->psy.num_properties = ARRAY_SIZE(compal_bat_properties); 884 data->psy.get_property = bat_get_property; 885 886 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR, 887 data->bat_manufacturer_name, 888 BAT_MANUFACTURER_NAME_LEN); 889 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0; 890 891 ec_read_sequence(BAT_MODEL_NAME_ADDR, 892 data->bat_model_name, 893 BAT_MODEL_NAME_LEN); 894 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0; 895 896 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d", 897 ec_read_u16(BAT_SERIAL_NUMBER_ADDR)); 898 } 899 900 static void initialize_fan_control_data(struct compal_data *data) 901 { 902 data->pwm_enable = 2; /* Keep motherboard in control for now */ 903 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception 904 if we take over... */ 905 } 906 907 static int setup_rfkill(void) 908 { 909 int ret; 910 911 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev, 912 RFKILL_TYPE_WLAN, &compal_rfkill_ops, 913 (void *) WIRELESS_WLAN); 914 if (!wifi_rfkill) 915 return -ENOMEM; 916 917 ret = rfkill_register(wifi_rfkill); 918 if (ret) 919 goto err_wifi; 920 921 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev, 922 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops, 923 (void *) WIRELESS_BT); 924 if (!bt_rfkill) { 925 ret = -ENOMEM; 926 goto err_allocate_bt; 927 } 928 ret = rfkill_register(bt_rfkill); 929 if (ret) 930 goto err_register_bt; 931 932 return 0; 933 934 err_register_bt: 935 rfkill_destroy(bt_rfkill); 936 937 err_allocate_bt: 938 rfkill_unregister(wifi_rfkill); 939 940 err_wifi: 941 rfkill_destroy(wifi_rfkill); 942 943 return ret; 944 } 945 946 static int __init compal_init(void) 947 { 948 int ret; 949 950 if (acpi_disabled) { 951 pr_err("ACPI needs to be enabled for this driver to work!\n"); 952 return -ENODEV; 953 } 954 955 if (!force && !dmi_check_system(compal_dmi_table)) { 956 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n"); 957 return -ENODEV; 958 } 959 960 if (!acpi_video_backlight_support()) { 961 struct backlight_properties props; 962 memset(&props, 0, sizeof(struct backlight_properties)); 963 props.type = BACKLIGHT_PLATFORM; 964 props.max_brightness = BACKLIGHT_LEVEL_MAX; 965 compalbl_device = backlight_device_register(DRIVER_NAME, 966 NULL, NULL, 967 &compalbl_ops, 968 &props); 969 if (IS_ERR(compalbl_device)) 970 return PTR_ERR(compalbl_device); 971 } 972 973 ret = platform_driver_register(&compal_driver); 974 if (ret) 975 goto err_backlight; 976 977 compal_device = platform_device_alloc(DRIVER_NAME, -1); 978 if (!compal_device) { 979 ret = -ENOMEM; 980 goto err_platform_driver; 981 } 982 983 ret = platform_device_add(compal_device); /* This calls compal_probe */ 984 if (ret) 985 goto err_platform_device; 986 987 ret = setup_rfkill(); 988 if (ret) 989 goto err_rfkill; 990 991 pr_info("Driver " DRIVER_VERSION " successfully loaded\n"); 992 return 0; 993 994 err_rfkill: 995 platform_device_del(compal_device); 996 997 err_platform_device: 998 platform_device_put(compal_device); 999 1000 err_platform_driver: 1001 platform_driver_unregister(&compal_driver); 1002 1003 err_backlight: 1004 backlight_device_unregister(compalbl_device); 1005 1006 return ret; 1007 } 1008 1009 static int compal_probe(struct platform_device *pdev) 1010 { 1011 int err; 1012 struct compal_data *data; 1013 struct device *hwmon_dev; 1014 1015 if (!extra_features) 1016 return 0; 1017 1018 /* Fan control */ 1019 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL); 1020 if (!data) 1021 return -ENOMEM; 1022 1023 initialize_fan_control_data(data); 1024 1025 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group); 1026 if (err) 1027 return err; 1028 1029 hwmon_dev = hwmon_device_register_with_groups(&pdev->dev, 1030 "compal", data, 1031 compal_hwmon_groups); 1032 if (IS_ERR(hwmon_dev)) { 1033 err = PTR_ERR(hwmon_dev); 1034 goto remove; 1035 } 1036 1037 /* Power supply */ 1038 initialize_power_supply_data(data); 1039 power_supply_register(&compal_device->dev, &data->psy); 1040 1041 platform_set_drvdata(pdev, data); 1042 1043 return 0; 1044 1045 remove: 1046 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group); 1047 return err; 1048 } 1049 1050 static void __exit compal_cleanup(void) 1051 { 1052 platform_device_unregister(compal_device); 1053 platform_driver_unregister(&compal_driver); 1054 backlight_device_unregister(compalbl_device); 1055 rfkill_unregister(wifi_rfkill); 1056 rfkill_unregister(bt_rfkill); 1057 rfkill_destroy(wifi_rfkill); 1058 rfkill_destroy(bt_rfkill); 1059 1060 pr_info("Driver unloaded\n"); 1061 } 1062 1063 static int compal_remove(struct platform_device *pdev) 1064 { 1065 struct compal_data *data; 1066 1067 if (!extra_features) 1068 return 0; 1069 1070 pr_info("Unloading: resetting fan control to motherboard\n"); 1071 pwm_disable_control(); 1072 1073 data = platform_get_drvdata(pdev); 1074 power_supply_unregister(&data->psy); 1075 1076 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group); 1077 1078 return 0; 1079 } 1080 1081 1082 module_init(compal_init); 1083 module_exit(compal_cleanup); 1084 1085 MODULE_AUTHOR("Cezary Jackiewicz"); 1086 MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)"); 1087 MODULE_DESCRIPTION("Compal Laptop Support"); 1088 MODULE_VERSION(DRIVER_VERSION); 1089 MODULE_LICENSE("GPL"); 1090