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 err = strict_strtol(buf, 10, &val); 429 if (err) 430 return err; 431 if (val < 0) 432 return -EINVAL; 433 434 data->pwm_enable = val; 435 436 switch (val) { 437 case 0: /* Full speed */ 438 pwm_enable_control(); 439 set_pwm(255); 440 break; 441 case 1: /* As set by pwm1 */ 442 pwm_enable_control(); 443 set_pwm(data->curr_pwm); 444 break; 445 default: /* Control by motherboard */ 446 pwm_disable_control(); 447 break; 448 } 449 450 return count; 451 } 452 453 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 454 char *buf) 455 { 456 struct compal_data *data = dev_get_drvdata(dev); 457 return sprintf(buf, "%hhu\n", data->curr_pwm); 458 } 459 460 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 461 const char *buf, size_t count) 462 { 463 struct compal_data *data = dev_get_drvdata(dev); 464 long val; 465 int err; 466 err = strict_strtol(buf, 10, &val); 467 if (err) 468 return err; 469 if (val < 0 || val > 255) 470 return -EINVAL; 471 472 data->curr_pwm = val; 473 474 if (data->pwm_enable != 1) 475 return count; 476 set_pwm(val); 477 478 return count; 479 } 480 481 static ssize_t fan_show(struct device *dev, struct device_attribute *attr, 482 char *buf) 483 { 484 return sprintf(buf, "%d\n", get_fan_rpm()); 485 } 486 487 488 /* Temperature interface */ 489 #define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \ 490 static ssize_t temp_##POSTFIX(struct device *dev, \ 491 struct device_attribute *attr, char *buf) \ 492 { \ 493 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \ 494 } \ 495 static ssize_t label_##POSTFIX(struct device *dev, \ 496 struct device_attribute *attr, char *buf) \ 497 { \ 498 return sprintf(buf, "%s\n", LABEL); \ 499 } 500 501 /* Labels as in service guide */ 502 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP"); 503 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL"); 504 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS"); 505 TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge"); 506 TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP"); 507 TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90"); 508 509 510 /* Power supply interface */ 511 static int bat_status(void) 512 { 513 u8 status0 = ec_read_u8(BAT_STATUS0); 514 u8 status1 = ec_read_u8(BAT_STATUS1); 515 516 if (status0 & BAT_S0_CHARGING) 517 return POWER_SUPPLY_STATUS_CHARGING; 518 if (status0 & BAT_S0_DISCHARGE) 519 return POWER_SUPPLY_STATUS_DISCHARGING; 520 if (status1 & BAT_S1_FULL) 521 return POWER_SUPPLY_STATUS_FULL; 522 return POWER_SUPPLY_STATUS_NOT_CHARGING; 523 } 524 525 static int bat_health(void) 526 { 527 u8 status = ec_read_u8(BAT_STOP_CHARGE1); 528 529 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE) 530 return POWER_SUPPLY_HEALTH_OVERHEAT; 531 if (status & BAT_STOP_CHRG1_OVERVOLTAGE) 532 return POWER_SUPPLY_HEALTH_OVERVOLTAGE; 533 if (status & BAT_STOP_CHRG1_BAD_CELL) 534 return POWER_SUPPLY_HEALTH_DEAD; 535 if (status & BAT_STOP_CHRG1_COMM_FAIL) 536 return POWER_SUPPLY_HEALTH_UNKNOWN; 537 return POWER_SUPPLY_HEALTH_GOOD; 538 } 539 540 static int bat_is_present(void) 541 { 542 u8 status = ec_read_u8(BAT_STATUS2); 543 return ((status & BAT_S1_EXISTS) != 0); 544 } 545 546 static int bat_technology(void) 547 { 548 u8 status = ec_read_u8(BAT_STATUS1); 549 550 if (status & BAT_S1_LiION_OR_NiMH) 551 return POWER_SUPPLY_TECHNOLOGY_LION; 552 return POWER_SUPPLY_TECHNOLOGY_NiMH; 553 } 554 555 static int bat_capacity_level(void) 556 { 557 u8 status0 = ec_read_u8(BAT_STATUS0); 558 u8 status1 = ec_read_u8(BAT_STATUS1); 559 u8 status2 = ec_read_u8(BAT_STATUS2); 560 561 if (status0 & BAT_S0_DISCHRG_CRITICAL 562 || status1 & BAT_S1_EMPTY 563 || status2 & BAT_S2_LOW_LOW) 564 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 565 if (status0 & BAT_S0_LOW) 566 return POWER_SUPPLY_CAPACITY_LEVEL_LOW; 567 if (status1 & BAT_S1_FULL) 568 return POWER_SUPPLY_CAPACITY_LEVEL_FULL; 569 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 570 } 571 572 static int bat_get_property(struct power_supply *psy, 573 enum power_supply_property psp, 574 union power_supply_propval *val) 575 { 576 struct compal_data *data; 577 data = container_of(psy, struct compal_data, psy); 578 579 switch (psp) { 580 case POWER_SUPPLY_PROP_STATUS: 581 val->intval = bat_status(); 582 break; 583 case POWER_SUPPLY_PROP_HEALTH: 584 val->intval = bat_health(); 585 break; 586 case POWER_SUPPLY_PROP_PRESENT: 587 val->intval = bat_is_present(); 588 break; 589 case POWER_SUPPLY_PROP_TECHNOLOGY: 590 val->intval = bat_technology(); 591 break; 592 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */ 593 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000; 594 break; 595 case POWER_SUPPLY_PROP_VOLTAGE_NOW: 596 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000; 597 break; 598 case POWER_SUPPLY_PROP_CURRENT_NOW: 599 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000; 600 break; 601 case POWER_SUPPLY_PROP_CURRENT_AVG: 602 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000; 603 break; 604 case POWER_SUPPLY_PROP_POWER_NOW: 605 val->intval = ec_read_u8(BAT_POWER) * 1000000; 606 break; 607 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: 608 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000; 609 break; 610 case POWER_SUPPLY_PROP_CHARGE_NOW: 611 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000; 612 break; 613 case POWER_SUPPLY_PROP_CAPACITY: 614 val->intval = ec_read_u8(BAT_CAPACITY); 615 break; 616 case POWER_SUPPLY_PROP_CAPACITY_LEVEL: 617 val->intval = bat_capacity_level(); 618 break; 619 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing 620 * the number of degrees, whereas BAT_TEMP is somewhat more 621 * complicated. It looks like this is a negative nember with a 622 * 100/256 divider and an offset of 222. Both were determined 623 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */ 624 case POWER_SUPPLY_PROP_TEMP: 625 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8; 626 break; 627 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */ 628 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10; 629 break; 630 /* Neither the model name nor manufacturer name work for me. */ 631 case POWER_SUPPLY_PROP_MODEL_NAME: 632 val->strval = data->bat_model_name; 633 break; 634 case POWER_SUPPLY_PROP_MANUFACTURER: 635 val->strval = data->bat_manufacturer_name; 636 break; 637 case POWER_SUPPLY_PROP_SERIAL_NUMBER: 638 val->strval = data->bat_serial_number; 639 break; 640 default: 641 break; 642 } 643 return 0; 644 } 645 646 647 648 649 650 /* ============== */ 651 /* Driver Globals */ 652 /* ============== */ 653 static DEVICE_ATTR(wake_up_pme, 654 0644, wake_up_pme_show, wake_up_pme_store); 655 static DEVICE_ATTR(wake_up_modem, 656 0644, wake_up_modem_show, wake_up_modem_store); 657 static DEVICE_ATTR(wake_up_lan, 658 0644, wake_up_lan_show, wake_up_lan_store); 659 static DEVICE_ATTR(wake_up_wlan, 660 0644, wake_up_wlan_show, wake_up_wlan_store); 661 static DEVICE_ATTR(wake_up_key, 662 0644, wake_up_key_show, wake_up_key_store); 663 static DEVICE_ATTR(wake_up_mouse, 664 0644, wake_up_mouse_show, wake_up_mouse_store); 665 666 static SENSOR_DEVICE_ATTR(name, S_IRUGO, hwmon_name_show, NULL, 1); 667 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL, 1); 668 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL, 1); 669 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL, 1); 670 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL, 1); 671 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL, 1); 672 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL, 1); 673 static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL, 1); 674 static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL, 1); 675 static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL, 1); 676 static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL, 1); 677 static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL, 1); 678 static SENSOR_DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL, 1); 679 static SENSOR_DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL, 1); 680 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store, 1); 681 static SENSOR_DEVICE_ATTR(pwm1_enable, 682 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store, 0); 683 684 static struct attribute *compal_attributes[] = { 685 &dev_attr_wake_up_pme.attr, 686 &dev_attr_wake_up_modem.attr, 687 &dev_attr_wake_up_lan.attr, 688 &dev_attr_wake_up_wlan.attr, 689 &dev_attr_wake_up_key.attr, 690 &dev_attr_wake_up_mouse.attr, 691 /* Maybe put the sensor-stuff in a separate hwmon-driver? That way, 692 * the hwmon sysfs won't be cluttered with the above files. */ 693 &sensor_dev_attr_name.dev_attr.attr, 694 &sensor_dev_attr_pwm1_enable.dev_attr.attr, 695 &sensor_dev_attr_pwm1.dev_attr.attr, 696 &sensor_dev_attr_fan1_input.dev_attr.attr, 697 &sensor_dev_attr_temp1_input.dev_attr.attr, 698 &sensor_dev_attr_temp2_input.dev_attr.attr, 699 &sensor_dev_attr_temp3_input.dev_attr.attr, 700 &sensor_dev_attr_temp4_input.dev_attr.attr, 701 &sensor_dev_attr_temp5_input.dev_attr.attr, 702 &sensor_dev_attr_temp6_input.dev_attr.attr, 703 &sensor_dev_attr_temp1_label.dev_attr.attr, 704 &sensor_dev_attr_temp2_label.dev_attr.attr, 705 &sensor_dev_attr_temp3_label.dev_attr.attr, 706 &sensor_dev_attr_temp4_label.dev_attr.attr, 707 &sensor_dev_attr_temp5_label.dev_attr.attr, 708 &sensor_dev_attr_temp6_label.dev_attr.attr, 709 NULL 710 }; 711 712 static struct attribute_group compal_attribute_group = { 713 .attrs = compal_attributes 714 }; 715 716 static int __devinit compal_probe(struct platform_device *); 717 static int __devexit compal_remove(struct platform_device *); 718 static struct platform_driver compal_driver = { 719 .driver = { 720 .name = DRIVER_NAME, 721 .owner = THIS_MODULE, 722 }, 723 .probe = compal_probe, 724 .remove = __devexit_p(compal_remove) 725 }; 726 727 static enum power_supply_property compal_bat_properties[] = { 728 POWER_SUPPLY_PROP_STATUS, 729 POWER_SUPPLY_PROP_HEALTH, 730 POWER_SUPPLY_PROP_PRESENT, 731 POWER_SUPPLY_PROP_TECHNOLOGY, 732 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, 733 POWER_SUPPLY_PROP_VOLTAGE_NOW, 734 POWER_SUPPLY_PROP_CURRENT_NOW, 735 POWER_SUPPLY_PROP_CURRENT_AVG, 736 POWER_SUPPLY_PROP_POWER_NOW, 737 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 738 POWER_SUPPLY_PROP_CHARGE_NOW, 739 POWER_SUPPLY_PROP_CAPACITY, 740 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 741 POWER_SUPPLY_PROP_TEMP, 742 POWER_SUPPLY_PROP_TEMP_AMBIENT, 743 POWER_SUPPLY_PROP_MODEL_NAME, 744 POWER_SUPPLY_PROP_MANUFACTURER, 745 POWER_SUPPLY_PROP_SERIAL_NUMBER, 746 }; 747 748 static struct backlight_device *compalbl_device; 749 750 static struct platform_device *compal_device; 751 752 static struct rfkill *wifi_rfkill; 753 static struct rfkill *bt_rfkill; 754 755 756 757 758 759 /* =================================== */ 760 /* Initialization & clean-up functions */ 761 /* =================================== */ 762 763 static int dmi_check_cb(const struct dmi_system_id *id) 764 { 765 pr_info("Identified laptop model '%s'\n", id->ident); 766 extra_features = false; 767 return 1; 768 } 769 770 static int dmi_check_cb_extra(const struct dmi_system_id *id) 771 { 772 pr_info("Identified laptop model '%s', enabling extra features\n", 773 id->ident); 774 extra_features = true; 775 return 1; 776 } 777 778 static struct dmi_system_id __initdata compal_dmi_table[] = { 779 { 780 .ident = "FL90/IFL90", 781 .matches = { 782 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 783 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 784 }, 785 .callback = dmi_check_cb 786 }, 787 { 788 .ident = "FL90/IFL90", 789 .matches = { 790 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 791 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 792 }, 793 .callback = dmi_check_cb 794 }, 795 { 796 .ident = "FL91/IFL91", 797 .matches = { 798 DMI_MATCH(DMI_BOARD_NAME, "IFL91"), 799 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 800 }, 801 .callback = dmi_check_cb 802 }, 803 { 804 .ident = "FL92/JFL92", 805 .matches = { 806 DMI_MATCH(DMI_BOARD_NAME, "JFL92"), 807 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 808 }, 809 .callback = dmi_check_cb 810 }, 811 { 812 .ident = "FT00/IFT00", 813 .matches = { 814 DMI_MATCH(DMI_BOARD_NAME, "IFT00"), 815 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 816 }, 817 .callback = dmi_check_cb 818 }, 819 { 820 .ident = "Dell Mini 9", 821 .matches = { 822 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 823 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"), 824 }, 825 .callback = dmi_check_cb 826 }, 827 { 828 .ident = "Dell Mini 10", 829 .matches = { 830 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 831 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"), 832 }, 833 .callback = dmi_check_cb 834 }, 835 { 836 .ident = "Dell Mini 10v", 837 .matches = { 838 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 839 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"), 840 }, 841 .callback = dmi_check_cb 842 }, 843 { 844 .ident = "Dell Mini 1012", 845 .matches = { 846 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 847 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"), 848 }, 849 .callback = dmi_check_cb 850 }, 851 { 852 .ident = "Dell Inspiron 11z", 853 .matches = { 854 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 855 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"), 856 }, 857 .callback = dmi_check_cb 858 }, 859 { 860 .ident = "Dell Mini 12", 861 .matches = { 862 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 863 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"), 864 }, 865 .callback = dmi_check_cb 866 }, 867 { 868 .ident = "JHL90", 869 .matches = { 870 DMI_MATCH(DMI_BOARD_NAME, "JHL90"), 871 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 872 }, 873 .callback = dmi_check_cb_extra 874 }, 875 { 876 .ident = "KHLB2", 877 .matches = { 878 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"), 879 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 880 }, 881 .callback = dmi_check_cb_extra 882 }, 883 { } 884 }; 885 MODULE_DEVICE_TABLE(dmi, compal_dmi_table); 886 887 static void initialize_power_supply_data(struct compal_data *data) 888 { 889 data->psy.name = DRIVER_NAME; 890 data->psy.type = POWER_SUPPLY_TYPE_BATTERY; 891 data->psy.properties = compal_bat_properties; 892 data->psy.num_properties = ARRAY_SIZE(compal_bat_properties); 893 data->psy.get_property = bat_get_property; 894 895 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR, 896 data->bat_manufacturer_name, 897 BAT_MANUFACTURER_NAME_LEN); 898 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0; 899 900 ec_read_sequence(BAT_MODEL_NAME_ADDR, 901 data->bat_model_name, 902 BAT_MODEL_NAME_LEN); 903 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0; 904 905 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d", 906 ec_read_u16(BAT_SERIAL_NUMBER_ADDR)); 907 } 908 909 static void initialize_fan_control_data(struct compal_data *data) 910 { 911 data->pwm_enable = 2; /* Keep motherboard in control for now */ 912 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception 913 if we take over... */ 914 } 915 916 static int setup_rfkill(void) 917 { 918 int ret; 919 920 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev, 921 RFKILL_TYPE_WLAN, &compal_rfkill_ops, 922 (void *) WIRELESS_WLAN); 923 if (!wifi_rfkill) 924 return -ENOMEM; 925 926 ret = rfkill_register(wifi_rfkill); 927 if (ret) 928 goto err_wifi; 929 930 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev, 931 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops, 932 (void *) WIRELESS_BT); 933 if (!bt_rfkill) { 934 ret = -ENOMEM; 935 goto err_allocate_bt; 936 } 937 ret = rfkill_register(bt_rfkill); 938 if (ret) 939 goto err_register_bt; 940 941 return 0; 942 943 err_register_bt: 944 rfkill_destroy(bt_rfkill); 945 946 err_allocate_bt: 947 rfkill_unregister(wifi_rfkill); 948 949 err_wifi: 950 rfkill_destroy(wifi_rfkill); 951 952 return ret; 953 } 954 955 static int __init compal_init(void) 956 { 957 int ret; 958 959 if (acpi_disabled) { 960 pr_err("ACPI needs to be enabled for this driver to work!\n"); 961 return -ENODEV; 962 } 963 964 if (!force && !dmi_check_system(compal_dmi_table)) { 965 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n"); 966 return -ENODEV; 967 } 968 969 if (!acpi_video_backlight_support()) { 970 struct backlight_properties props; 971 memset(&props, 0, sizeof(struct backlight_properties)); 972 props.type = BACKLIGHT_PLATFORM; 973 props.max_brightness = BACKLIGHT_LEVEL_MAX; 974 compalbl_device = backlight_device_register(DRIVER_NAME, 975 NULL, NULL, 976 &compalbl_ops, 977 &props); 978 if (IS_ERR(compalbl_device)) 979 return PTR_ERR(compalbl_device); 980 } 981 982 ret = platform_driver_register(&compal_driver); 983 if (ret) 984 goto err_backlight; 985 986 compal_device = platform_device_alloc(DRIVER_NAME, -1); 987 if (!compal_device) { 988 ret = -ENOMEM; 989 goto err_platform_driver; 990 } 991 992 ret = platform_device_add(compal_device); /* This calls compal_probe */ 993 if (ret) 994 goto err_platform_device; 995 996 ret = setup_rfkill(); 997 if (ret) 998 goto err_rfkill; 999 1000 pr_info("Driver " DRIVER_VERSION " successfully loaded\n"); 1001 return 0; 1002 1003 err_rfkill: 1004 platform_device_del(compal_device); 1005 1006 err_platform_device: 1007 platform_device_put(compal_device); 1008 1009 err_platform_driver: 1010 platform_driver_unregister(&compal_driver); 1011 1012 err_backlight: 1013 backlight_device_unregister(compalbl_device); 1014 1015 return ret; 1016 } 1017 1018 static int __devinit compal_probe(struct platform_device *pdev) 1019 { 1020 int err; 1021 struct compal_data *data; 1022 1023 if (!extra_features) 1024 return 0; 1025 1026 /* Fan control */ 1027 data = kzalloc(sizeof(struct compal_data), GFP_KERNEL); 1028 if (!data) 1029 return -ENOMEM; 1030 1031 initialize_fan_control_data(data); 1032 1033 err = sysfs_create_group(&pdev->dev.kobj, &compal_attribute_group); 1034 if (err) { 1035 kfree(data); 1036 return err; 1037 } 1038 1039 data->hwmon_dev = hwmon_device_register(&pdev->dev); 1040 if (IS_ERR(data->hwmon_dev)) { 1041 err = PTR_ERR(data->hwmon_dev); 1042 sysfs_remove_group(&pdev->dev.kobj, 1043 &compal_attribute_group); 1044 kfree(data); 1045 return err; 1046 } 1047 1048 /* Power supply */ 1049 initialize_power_supply_data(data); 1050 power_supply_register(&compal_device->dev, &data->psy); 1051 1052 platform_set_drvdata(pdev, data); 1053 1054 return 0; 1055 } 1056 1057 static void __exit compal_cleanup(void) 1058 { 1059 platform_device_unregister(compal_device); 1060 platform_driver_unregister(&compal_driver); 1061 backlight_device_unregister(compalbl_device); 1062 rfkill_unregister(wifi_rfkill); 1063 rfkill_unregister(bt_rfkill); 1064 rfkill_destroy(wifi_rfkill); 1065 rfkill_destroy(bt_rfkill); 1066 1067 pr_info("Driver unloaded\n"); 1068 } 1069 1070 static int __devexit compal_remove(struct platform_device *pdev) 1071 { 1072 struct compal_data *data; 1073 1074 if (!extra_features) 1075 return 0; 1076 1077 pr_info("Unloading: resetting fan control to motherboard\n"); 1078 pwm_disable_control(); 1079 1080 data = platform_get_drvdata(pdev); 1081 hwmon_device_unregister(data->hwmon_dev); 1082 power_supply_unregister(&data->psy); 1083 1084 platform_set_drvdata(pdev, NULL); 1085 kfree(data); 1086 1087 sysfs_remove_group(&pdev->dev.kobj, &compal_attribute_group); 1088 1089 return 0; 1090 } 1091 1092 1093 module_init(compal_init); 1094 module_exit(compal_cleanup); 1095 1096 MODULE_AUTHOR("Cezary Jackiewicz"); 1097 MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)"); 1098 MODULE_DESCRIPTION("Compal Laptop Support"); 1099 MODULE_VERSION(DRIVER_VERSION); 1100 MODULE_LICENSE("GPL"); 1101