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 #include <acpi/video.h> 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 #define BAT_CHARGE_LIMIT 0x03 155 #define BAT_CHARGE_LIMIT_MAX 100 156 157 #define BAT_S0_DISCHARGE (1 << 0) 158 #define BAT_S0_DISCHRG_CRITICAL (1 << 2) 159 #define BAT_S0_LOW (1 << 3) 160 #define BAT_S0_CHARGING (1 << 1) 161 #define BAT_S0_AC (1 << 7) 162 #define BAT_S1_EXISTS (1 << 0) 163 #define BAT_S1_FULL (1 << 1) 164 #define BAT_S1_EMPTY (1 << 2) 165 #define BAT_S1_LiION_OR_NiMH (1 << 7) 166 #define BAT_S2_LOW_LOW (1 << 0) 167 #define BAT_STOP_CHRG1_BAD_CELL (1 << 1) 168 #define BAT_STOP_CHRG1_COMM_FAIL (1 << 2) 169 #define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6) 170 #define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7) 171 172 173 /* ======= */ 174 /* Structs */ 175 /* ======= */ 176 struct compal_data{ 177 /* Fan control */ 178 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */ 179 unsigned char curr_pwm; 180 181 /* Power supply */ 182 struct power_supply *psy; 183 struct power_supply_info psy_info; 184 char bat_model_name[BAT_MODEL_NAME_LEN + 1]; 185 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1]; 186 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1]; 187 }; 188 189 190 /* =============== */ 191 /* General globals */ 192 /* =============== */ 193 static bool force; 194 module_param(force, bool, 0); 195 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data"); 196 197 /* Support for the wake_on_XXX, hwmon and power_supply interface. Currently 198 * only gets enabled on a JHL90 board. Might work with the others too */ 199 static bool extra_features; 200 201 /* Nasty stuff. For some reason the fan control is very un-linear. I've 202 * come up with these values by looping through the possible inputs and 203 * watching the output of address 0x4F (do an ec_transaction writing 0x33 204 * into 0x4F and read a few bytes from the output, like so: 205 * u8 writeData = 0x33; 206 * ec_transaction(0x4F, &writeData, 1, buffer, 32); 207 * That address is labeled "fan1 table information" in the service manual. 208 * It should be clear which value in 'buffer' changes). This seems to be 209 * related to fan speed. It isn't a proper 'realtime' fan speed value 210 * though, because physically stopping or speeding up the fan doesn't 211 * change it. It might be the average voltage or current of the pwm output. 212 * Nevertheless, it is more fine-grained than the actual RPM reading */ 213 static const unsigned char pwm_lookup_table[256] = { 214 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 215 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95, 216 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70, 217 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94, 218 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139, 219 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76, 220 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22, 221 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219, 222 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186, 223 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33, 224 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38, 225 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46, 226 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48, 227 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44, 228 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251, 229 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187, 230 187, 187, 193, 50 231 }; 232 233 234 235 236 /* ========================= */ 237 /* Hardware access functions */ 238 /* ========================= */ 239 /* General access */ 240 static u8 ec_read_u8(u8 addr) 241 { 242 u8 value; 243 ec_read(addr, &value); 244 return value; 245 } 246 247 static s8 ec_read_s8(u8 addr) 248 { 249 return (s8)ec_read_u8(addr); 250 } 251 252 static u16 ec_read_u16(u8 addr) 253 { 254 int hi, lo; 255 lo = ec_read_u8(addr); 256 hi = ec_read_u8(addr + 1); 257 return (hi << 8) + lo; 258 } 259 260 static s16 ec_read_s16(u8 addr) 261 { 262 return (s16) ec_read_u16(addr); 263 } 264 265 static void ec_read_sequence(u8 addr, u8 *buf, int len) 266 { 267 int i; 268 for (i = 0; i < len; i++) 269 ec_read(addr + i, buf + i); 270 } 271 272 273 /* Backlight access */ 274 static int set_backlight_level(int level) 275 { 276 if (level < 0 || level > BACKLIGHT_LEVEL_MAX) 277 return -EINVAL; 278 279 ec_write(BACKLIGHT_LEVEL_ADDR, level); 280 281 return 0; 282 } 283 284 static int get_backlight_level(void) 285 { 286 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR); 287 } 288 289 static void set_backlight_state(bool on) 290 { 291 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA; 292 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0); 293 } 294 295 296 /* Fan control access */ 297 static void pwm_enable_control(void) 298 { 299 unsigned char writeData = PWM_ENABLE_DATA; 300 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0); 301 } 302 303 static void pwm_disable_control(void) 304 { 305 unsigned char writeData = PWM_DISABLE_DATA; 306 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0); 307 } 308 309 static void set_pwm(int pwm) 310 { 311 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0); 312 } 313 314 static int get_fan_rpm(void) 315 { 316 u8 value, data = FAN_DATA; 317 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1); 318 return 100 * (int)value; 319 } 320 321 322 323 324 /* =================== */ 325 /* Interface functions */ 326 /* =================== */ 327 328 /* Backlight interface */ 329 static int bl_get_brightness(struct backlight_device *b) 330 { 331 return get_backlight_level(); 332 } 333 334 static int bl_update_status(struct backlight_device *b) 335 { 336 int ret = set_backlight_level(b->props.brightness); 337 if (ret) 338 return ret; 339 340 set_backlight_state((b->props.power == FB_BLANK_UNBLANK) 341 && !(b->props.state & BL_CORE_SUSPENDED) 342 && !(b->props.state & BL_CORE_FBBLANK)); 343 return 0; 344 } 345 346 static const struct backlight_ops compalbl_ops = { 347 .get_brightness = bl_get_brightness, 348 .update_status = bl_update_status, 349 }; 350 351 352 /* Wireless interface */ 353 static int compal_rfkill_set(void *data, bool blocked) 354 { 355 unsigned long radio = (unsigned long) data; 356 u8 result = ec_read_u8(WIRELESS_ADDR); 357 u8 value; 358 359 if (!blocked) 360 value = (u8) (result | radio); 361 else 362 value = (u8) (result & ~radio); 363 ec_write(WIRELESS_ADDR, value); 364 365 return 0; 366 } 367 368 static void compal_rfkill_poll(struct rfkill *rfkill, void *data) 369 { 370 u8 result = ec_read_u8(WIRELESS_ADDR); 371 bool hw_blocked = !(result & WIRELESS_KILLSWITCH); 372 rfkill_set_hw_state(rfkill, hw_blocked); 373 } 374 375 static const struct rfkill_ops compal_rfkill_ops = { 376 .poll = compal_rfkill_poll, 377 .set_block = compal_rfkill_set, 378 }; 379 380 381 /* Wake_up interface */ 382 #define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \ 383 static ssize_t NAME##_show(struct device *dev, \ 384 struct device_attribute *attr, char *buf) \ 385 { \ 386 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \ 387 } \ 388 static ssize_t NAME##_store(struct device *dev, \ 389 struct device_attribute *attr, const char *buf, size_t count) \ 390 { \ 391 int state; \ 392 u8 old_val = ec_read_u8(ADDR); \ 393 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \ 394 return -EINVAL; \ 395 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \ 396 return count; \ 397 } 398 399 SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME) 400 SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM) 401 SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN) 402 SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN) 403 SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY) 404 SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE) 405 406 /* Fan control interface */ 407 static ssize_t pwm_enable_show(struct device *dev, 408 struct device_attribute *attr, char *buf) 409 { 410 struct compal_data *data = dev_get_drvdata(dev); 411 return sprintf(buf, "%d\n", data->pwm_enable); 412 } 413 414 static ssize_t pwm_enable_store(struct device *dev, 415 struct device_attribute *attr, const char *buf, size_t count) 416 { 417 struct compal_data *data = dev_get_drvdata(dev); 418 long val; 419 int err; 420 421 err = kstrtol(buf, 10, &val); 422 if (err) 423 return err; 424 if (val < 0) 425 return -EINVAL; 426 427 data->pwm_enable = val; 428 429 switch (val) { 430 case 0: /* Full speed */ 431 pwm_enable_control(); 432 set_pwm(255); 433 break; 434 case 1: /* As set by pwm1 */ 435 pwm_enable_control(); 436 set_pwm(data->curr_pwm); 437 break; 438 default: /* Control by motherboard */ 439 pwm_disable_control(); 440 break; 441 } 442 443 return count; 444 } 445 446 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 447 char *buf) 448 { 449 struct compal_data *data = dev_get_drvdata(dev); 450 return sprintf(buf, "%hhu\n", data->curr_pwm); 451 } 452 453 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 454 const char *buf, size_t count) 455 { 456 struct compal_data *data = dev_get_drvdata(dev); 457 long val; 458 int err; 459 460 err = kstrtol(buf, 10, &val); 461 if (err) 462 return err; 463 if (val < 0 || val > 255) 464 return -EINVAL; 465 466 data->curr_pwm = val; 467 468 if (data->pwm_enable != 1) 469 return count; 470 set_pwm(val); 471 472 return count; 473 } 474 475 static ssize_t fan_show(struct device *dev, struct device_attribute *attr, 476 char *buf) 477 { 478 return sprintf(buf, "%d\n", get_fan_rpm()); 479 } 480 481 482 /* Temperature interface */ 483 #define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \ 484 static ssize_t temp_##POSTFIX(struct device *dev, \ 485 struct device_attribute *attr, char *buf) \ 486 { \ 487 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \ 488 } \ 489 static ssize_t label_##POSTFIX(struct device *dev, \ 490 struct device_attribute *attr, char *buf) \ 491 { \ 492 return sprintf(buf, "%s\n", LABEL); \ 493 } 494 495 /* Labels as in service guide */ 496 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP"); 497 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL"); 498 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS"); 499 TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge"); 500 TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP"); 501 TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90"); 502 503 504 /* Power supply interface */ 505 static int bat_status(void) 506 { 507 u8 status0 = ec_read_u8(BAT_STATUS0); 508 u8 status1 = ec_read_u8(BAT_STATUS1); 509 510 if (status0 & BAT_S0_CHARGING) 511 return POWER_SUPPLY_STATUS_CHARGING; 512 if (status0 & BAT_S0_DISCHARGE) 513 return POWER_SUPPLY_STATUS_DISCHARGING; 514 if (status1 & BAT_S1_FULL) 515 return POWER_SUPPLY_STATUS_FULL; 516 return POWER_SUPPLY_STATUS_NOT_CHARGING; 517 } 518 519 static int bat_health(void) 520 { 521 u8 status = ec_read_u8(BAT_STOP_CHARGE1); 522 523 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE) 524 return POWER_SUPPLY_HEALTH_OVERHEAT; 525 if (status & BAT_STOP_CHRG1_OVERVOLTAGE) 526 return POWER_SUPPLY_HEALTH_OVERVOLTAGE; 527 if (status & BAT_STOP_CHRG1_BAD_CELL) 528 return POWER_SUPPLY_HEALTH_DEAD; 529 if (status & BAT_STOP_CHRG1_COMM_FAIL) 530 return POWER_SUPPLY_HEALTH_UNKNOWN; 531 return POWER_SUPPLY_HEALTH_GOOD; 532 } 533 534 static int bat_is_present(void) 535 { 536 u8 status = ec_read_u8(BAT_STATUS2); 537 return ((status & BAT_S1_EXISTS) != 0); 538 } 539 540 static int bat_technology(void) 541 { 542 u8 status = ec_read_u8(BAT_STATUS1); 543 544 if (status & BAT_S1_LiION_OR_NiMH) 545 return POWER_SUPPLY_TECHNOLOGY_LION; 546 return POWER_SUPPLY_TECHNOLOGY_NiMH; 547 } 548 549 static int bat_capacity_level(void) 550 { 551 u8 status0 = ec_read_u8(BAT_STATUS0); 552 u8 status1 = ec_read_u8(BAT_STATUS1); 553 u8 status2 = ec_read_u8(BAT_STATUS2); 554 555 if (status0 & BAT_S0_DISCHRG_CRITICAL 556 || status1 & BAT_S1_EMPTY 557 || status2 & BAT_S2_LOW_LOW) 558 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 559 if (status0 & BAT_S0_LOW) 560 return POWER_SUPPLY_CAPACITY_LEVEL_LOW; 561 if (status1 & BAT_S1_FULL) 562 return POWER_SUPPLY_CAPACITY_LEVEL_FULL; 563 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 564 } 565 566 static int bat_get_property(struct power_supply *psy, 567 enum power_supply_property psp, 568 union power_supply_propval *val) 569 { 570 struct compal_data *data = power_supply_get_drvdata(psy); 571 572 switch (psp) { 573 case POWER_SUPPLY_PROP_STATUS: 574 val->intval = bat_status(); 575 break; 576 case POWER_SUPPLY_PROP_HEALTH: 577 val->intval = bat_health(); 578 break; 579 case POWER_SUPPLY_PROP_PRESENT: 580 val->intval = bat_is_present(); 581 break; 582 case POWER_SUPPLY_PROP_TECHNOLOGY: 583 val->intval = bat_technology(); 584 break; 585 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */ 586 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000; 587 break; 588 case POWER_SUPPLY_PROP_VOLTAGE_NOW: 589 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000; 590 break; 591 case POWER_SUPPLY_PROP_CURRENT_NOW: 592 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000; 593 break; 594 case POWER_SUPPLY_PROP_CURRENT_AVG: 595 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000; 596 break; 597 case POWER_SUPPLY_PROP_POWER_NOW: 598 val->intval = ec_read_u8(BAT_POWER) * 1000000; 599 break; 600 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: 601 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000; 602 break; 603 case POWER_SUPPLY_PROP_CHARGE_NOW: 604 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000; 605 break; 606 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: 607 val->intval = ec_read_u8(BAT_CHARGE_LIMIT); 608 break; 609 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX: 610 val->intval = BAT_CHARGE_LIMIT_MAX; 611 break; 612 case POWER_SUPPLY_PROP_CAPACITY: 613 val->intval = ec_read_u8(BAT_CAPACITY); 614 break; 615 case POWER_SUPPLY_PROP_CAPACITY_LEVEL: 616 val->intval = bat_capacity_level(); 617 break; 618 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing 619 * the number of degrees, whereas BAT_TEMP is somewhat more 620 * complicated. It looks like this is a negative nember with a 621 * 100/256 divider and an offset of 222. Both were determined 622 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */ 623 case POWER_SUPPLY_PROP_TEMP: 624 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8; 625 break; 626 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */ 627 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10; 628 break; 629 /* Neither the model name nor manufacturer name work for me. */ 630 case POWER_SUPPLY_PROP_MODEL_NAME: 631 val->strval = data->bat_model_name; 632 break; 633 case POWER_SUPPLY_PROP_MANUFACTURER: 634 val->strval = data->bat_manufacturer_name; 635 break; 636 case POWER_SUPPLY_PROP_SERIAL_NUMBER: 637 val->strval = data->bat_serial_number; 638 break; 639 default: 640 break; 641 } 642 return 0; 643 } 644 645 static int bat_set_property(struct power_supply *psy, 646 enum power_supply_property psp, 647 const union power_supply_propval *val) 648 { 649 int level; 650 651 switch (psp) { 652 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: 653 level = val->intval; 654 if (level < 0 || level > BAT_CHARGE_LIMIT_MAX) 655 return -EINVAL; 656 if (ec_write(BAT_CHARGE_LIMIT, level) < 0) 657 return -EIO; 658 break; 659 default: 660 break; 661 } 662 return 0; 663 } 664 665 static int bat_writeable_property(struct power_supply *psy, 666 enum power_supply_property psp) 667 { 668 switch (psp) { 669 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: 670 return 1; 671 default: 672 return 0; 673 } 674 } 675 676 677 678 679 /* ============== */ 680 /* Driver Globals */ 681 /* ============== */ 682 static DEVICE_ATTR_RW(wake_up_pme); 683 static DEVICE_ATTR_RW(wake_up_modem); 684 static DEVICE_ATTR_RW(wake_up_lan); 685 static DEVICE_ATTR_RW(wake_up_wlan); 686 static DEVICE_ATTR_RW(wake_up_key); 687 static DEVICE_ATTR_RW(wake_up_mouse); 688 689 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL); 690 static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL); 691 static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL); 692 static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL); 693 static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL); 694 static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL); 695 static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL); 696 static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL); 697 static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL); 698 static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL); 699 static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL); 700 static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL); 701 static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL); 702 static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store); 703 static DEVICE_ATTR(pwm1_enable, 704 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store); 705 706 static struct attribute *compal_platform_attrs[] = { 707 &dev_attr_wake_up_pme.attr, 708 &dev_attr_wake_up_modem.attr, 709 &dev_attr_wake_up_lan.attr, 710 &dev_attr_wake_up_wlan.attr, 711 &dev_attr_wake_up_key.attr, 712 &dev_attr_wake_up_mouse.attr, 713 NULL 714 }; 715 static const struct attribute_group compal_platform_attr_group = { 716 .attrs = compal_platform_attrs 717 }; 718 719 static struct attribute *compal_hwmon_attrs[] = { 720 &dev_attr_pwm1_enable.attr, 721 &dev_attr_pwm1.attr, 722 &dev_attr_fan1_input.attr, 723 &dev_attr_temp1_input.attr, 724 &dev_attr_temp2_input.attr, 725 &dev_attr_temp3_input.attr, 726 &dev_attr_temp4_input.attr, 727 &dev_attr_temp5_input.attr, 728 &dev_attr_temp6_input.attr, 729 &dev_attr_temp1_label.attr, 730 &dev_attr_temp2_label.attr, 731 &dev_attr_temp3_label.attr, 732 &dev_attr_temp4_label.attr, 733 &dev_attr_temp5_label.attr, 734 &dev_attr_temp6_label.attr, 735 NULL 736 }; 737 ATTRIBUTE_GROUPS(compal_hwmon); 738 739 static int compal_probe(struct platform_device *); 740 static int compal_remove(struct platform_device *); 741 static struct platform_driver compal_driver = { 742 .driver = { 743 .name = DRIVER_NAME, 744 }, 745 .probe = compal_probe, 746 .remove = compal_remove, 747 }; 748 749 static enum power_supply_property compal_bat_properties[] = { 750 POWER_SUPPLY_PROP_STATUS, 751 POWER_SUPPLY_PROP_HEALTH, 752 POWER_SUPPLY_PROP_PRESENT, 753 POWER_SUPPLY_PROP_TECHNOLOGY, 754 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, 755 POWER_SUPPLY_PROP_VOLTAGE_NOW, 756 POWER_SUPPLY_PROP_CURRENT_NOW, 757 POWER_SUPPLY_PROP_CURRENT_AVG, 758 POWER_SUPPLY_PROP_POWER_NOW, 759 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 760 POWER_SUPPLY_PROP_CHARGE_NOW, 761 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, 762 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, 763 POWER_SUPPLY_PROP_CAPACITY, 764 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 765 POWER_SUPPLY_PROP_TEMP, 766 POWER_SUPPLY_PROP_TEMP_AMBIENT, 767 POWER_SUPPLY_PROP_MODEL_NAME, 768 POWER_SUPPLY_PROP_MANUFACTURER, 769 POWER_SUPPLY_PROP_SERIAL_NUMBER, 770 }; 771 772 static struct backlight_device *compalbl_device; 773 774 static struct platform_device *compal_device; 775 776 static struct rfkill *wifi_rfkill; 777 static struct rfkill *bt_rfkill; 778 779 780 781 782 783 /* =================================== */ 784 /* Initialization & clean-up functions */ 785 /* =================================== */ 786 787 static int dmi_check_cb(const struct dmi_system_id *id) 788 { 789 pr_info("Identified laptop model '%s'\n", id->ident); 790 extra_features = false; 791 return 1; 792 } 793 794 static int dmi_check_cb_extra(const struct dmi_system_id *id) 795 { 796 pr_info("Identified laptop model '%s', enabling extra features\n", 797 id->ident); 798 extra_features = true; 799 return 1; 800 } 801 802 static const struct dmi_system_id compal_dmi_table[] __initconst = { 803 { 804 .ident = "FL90/IFL90", 805 .matches = { 806 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 807 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 808 }, 809 .callback = dmi_check_cb 810 }, 811 { 812 .ident = "FL90/IFL90", 813 .matches = { 814 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 815 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 816 }, 817 .callback = dmi_check_cb 818 }, 819 { 820 .ident = "FL91/IFL91", 821 .matches = { 822 DMI_MATCH(DMI_BOARD_NAME, "IFL91"), 823 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 824 }, 825 .callback = dmi_check_cb 826 }, 827 { 828 .ident = "FL92/JFL92", 829 .matches = { 830 DMI_MATCH(DMI_BOARD_NAME, "JFL92"), 831 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 832 }, 833 .callback = dmi_check_cb 834 }, 835 { 836 .ident = "FT00/IFT00", 837 .matches = { 838 DMI_MATCH(DMI_BOARD_NAME, "IFT00"), 839 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 840 }, 841 .callback = dmi_check_cb 842 }, 843 { 844 .ident = "Dell Mini 9", 845 .matches = { 846 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 847 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"), 848 }, 849 .callback = dmi_check_cb 850 }, 851 { 852 .ident = "Dell Mini 10", 853 .matches = { 854 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 855 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"), 856 }, 857 .callback = dmi_check_cb 858 }, 859 { 860 .ident = "Dell Mini 10v", 861 .matches = { 862 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 863 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"), 864 }, 865 .callback = dmi_check_cb 866 }, 867 { 868 .ident = "Dell Mini 1012", 869 .matches = { 870 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 871 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"), 872 }, 873 .callback = dmi_check_cb 874 }, 875 { 876 .ident = "Dell Inspiron 11z", 877 .matches = { 878 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 879 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"), 880 }, 881 .callback = dmi_check_cb 882 }, 883 { 884 .ident = "Dell Mini 12", 885 .matches = { 886 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 887 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"), 888 }, 889 .callback = dmi_check_cb 890 }, 891 { 892 .ident = "JHL90", 893 .matches = { 894 DMI_MATCH(DMI_BOARD_NAME, "JHL90"), 895 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 896 }, 897 .callback = dmi_check_cb_extra 898 }, 899 { 900 .ident = "KHLB2", 901 .matches = { 902 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"), 903 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 904 }, 905 .callback = dmi_check_cb_extra 906 }, 907 { } 908 }; 909 MODULE_DEVICE_TABLE(dmi, compal_dmi_table); 910 911 static const struct power_supply_desc psy_bat_desc = { 912 .name = DRIVER_NAME, 913 .type = POWER_SUPPLY_TYPE_BATTERY, 914 .properties = compal_bat_properties, 915 .num_properties = ARRAY_SIZE(compal_bat_properties), 916 .get_property = bat_get_property, 917 .set_property = bat_set_property, 918 .property_is_writeable = bat_writeable_property, 919 }; 920 921 static void initialize_power_supply_data(struct compal_data *data) 922 { 923 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR, 924 data->bat_manufacturer_name, 925 BAT_MANUFACTURER_NAME_LEN); 926 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0; 927 928 ec_read_sequence(BAT_MODEL_NAME_ADDR, 929 data->bat_model_name, 930 BAT_MODEL_NAME_LEN); 931 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0; 932 933 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d", 934 ec_read_u16(BAT_SERIAL_NUMBER_ADDR)); 935 } 936 937 static void initialize_fan_control_data(struct compal_data *data) 938 { 939 data->pwm_enable = 2; /* Keep motherboard in control for now */ 940 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception 941 if we take over... */ 942 } 943 944 static int setup_rfkill(void) 945 { 946 int ret; 947 948 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev, 949 RFKILL_TYPE_WLAN, &compal_rfkill_ops, 950 (void *) WIRELESS_WLAN); 951 if (!wifi_rfkill) 952 return -ENOMEM; 953 954 ret = rfkill_register(wifi_rfkill); 955 if (ret) 956 goto err_wifi; 957 958 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev, 959 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops, 960 (void *) WIRELESS_BT); 961 if (!bt_rfkill) { 962 ret = -ENOMEM; 963 goto err_allocate_bt; 964 } 965 ret = rfkill_register(bt_rfkill); 966 if (ret) 967 goto err_register_bt; 968 969 return 0; 970 971 err_register_bt: 972 rfkill_destroy(bt_rfkill); 973 974 err_allocate_bt: 975 rfkill_unregister(wifi_rfkill); 976 977 err_wifi: 978 rfkill_destroy(wifi_rfkill); 979 980 return ret; 981 } 982 983 static int __init compal_init(void) 984 { 985 int ret; 986 987 if (acpi_disabled) { 988 pr_err("ACPI needs to be enabled for this driver to work!\n"); 989 return -ENODEV; 990 } 991 992 if (!force && !dmi_check_system(compal_dmi_table)) { 993 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n"); 994 return -ENODEV; 995 } 996 997 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 998 struct backlight_properties props; 999 memset(&props, 0, sizeof(struct backlight_properties)); 1000 props.type = BACKLIGHT_PLATFORM; 1001 props.max_brightness = BACKLIGHT_LEVEL_MAX; 1002 compalbl_device = backlight_device_register(DRIVER_NAME, 1003 NULL, NULL, 1004 &compalbl_ops, 1005 &props); 1006 if (IS_ERR(compalbl_device)) 1007 return PTR_ERR(compalbl_device); 1008 } 1009 1010 ret = platform_driver_register(&compal_driver); 1011 if (ret) 1012 goto err_backlight; 1013 1014 compal_device = platform_device_alloc(DRIVER_NAME, -1); 1015 if (!compal_device) { 1016 ret = -ENOMEM; 1017 goto err_platform_driver; 1018 } 1019 1020 ret = platform_device_add(compal_device); /* This calls compal_probe */ 1021 if (ret) 1022 goto err_platform_device; 1023 1024 ret = setup_rfkill(); 1025 if (ret) 1026 goto err_rfkill; 1027 1028 pr_info("Driver " DRIVER_VERSION " successfully loaded\n"); 1029 return 0; 1030 1031 err_rfkill: 1032 platform_device_del(compal_device); 1033 1034 err_platform_device: 1035 platform_device_put(compal_device); 1036 1037 err_platform_driver: 1038 platform_driver_unregister(&compal_driver); 1039 1040 err_backlight: 1041 backlight_device_unregister(compalbl_device); 1042 1043 return ret; 1044 } 1045 1046 static int compal_probe(struct platform_device *pdev) 1047 { 1048 int err; 1049 struct compal_data *data; 1050 struct device *hwmon_dev; 1051 struct power_supply_config psy_cfg = {}; 1052 1053 if (!extra_features) 1054 return 0; 1055 1056 /* Fan control */ 1057 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL); 1058 if (!data) 1059 return -ENOMEM; 1060 1061 initialize_fan_control_data(data); 1062 1063 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group); 1064 if (err) 1065 return err; 1066 1067 hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev, 1068 "compal", data, 1069 compal_hwmon_groups); 1070 if (IS_ERR(hwmon_dev)) { 1071 err = PTR_ERR(hwmon_dev); 1072 goto remove; 1073 } 1074 1075 /* Power supply */ 1076 initialize_power_supply_data(data); 1077 psy_cfg.drv_data = data; 1078 data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc, 1079 &psy_cfg); 1080 if (IS_ERR(data->psy)) { 1081 err = PTR_ERR(data->psy); 1082 goto remove; 1083 } 1084 1085 platform_set_drvdata(pdev, data); 1086 1087 return 0; 1088 1089 remove: 1090 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group); 1091 return err; 1092 } 1093 1094 static void __exit compal_cleanup(void) 1095 { 1096 platform_device_unregister(compal_device); 1097 platform_driver_unregister(&compal_driver); 1098 backlight_device_unregister(compalbl_device); 1099 rfkill_unregister(wifi_rfkill); 1100 rfkill_unregister(bt_rfkill); 1101 rfkill_destroy(wifi_rfkill); 1102 rfkill_destroy(bt_rfkill); 1103 1104 pr_info("Driver unloaded\n"); 1105 } 1106 1107 static int compal_remove(struct platform_device *pdev) 1108 { 1109 struct compal_data *data; 1110 1111 if (!extra_features) 1112 return 0; 1113 1114 pr_info("Unloading: resetting fan control to motherboard\n"); 1115 pwm_disable_control(); 1116 1117 data = platform_get_drvdata(pdev); 1118 power_supply_unregister(data->psy); 1119 1120 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group); 1121 1122 return 0; 1123 } 1124 1125 1126 module_init(compal_init); 1127 module_exit(compal_cleanup); 1128 1129 MODULE_AUTHOR("Cezary Jackiewicz"); 1130 MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)"); 1131 MODULE_DESCRIPTION("Compal Laptop Support"); 1132 MODULE_VERSION(DRIVER_VERSION); 1133 MODULE_LICENSE("GPL"); 1134