1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /*-*-linux-c-*-*/ 3 4 /* 5 Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com> 6 7 based on MSI driver 8 9 Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de> 10 11 */ 12 13 /* 14 * compal-laptop.c - Compal laptop support. 15 * 16 * This driver exports a few files in /sys/devices/platform/compal-laptop/: 17 * wake_up_XXX Whether or not we listen to such wake up events (rw) 18 * 19 * In addition to these platform device attributes the driver 20 * registers itself in the Linux backlight control, power_supply, rfkill 21 * and hwmon subsystem and is available to userspace under: 22 * 23 * /sys/class/backlight/compal-laptop/ 24 * /sys/class/power_supply/compal-laptop/ 25 * /sys/class/rfkill/rfkillX/ 26 * /sys/class/hwmon/hwmonX/ 27 * 28 * Notes on the power_supply battery interface: 29 * - the "minimum" design voltage is *the* design voltage 30 * - the ambient temperature is the average battery temperature 31 * and the value is an educated guess (see commented code below) 32 * 33 * 34 * This driver might work on other laptops produced by Compal. If you 35 * want to try it you can pass force=1 as argument to the module which 36 * will force it to load even when the DMI data doesn't identify the 37 * laptop as compatible. 38 * 39 * Lots of data available at: 40 * http://service1.marasst.com/Compal/JHL90_91/Service%20Manual/ 41 * JHL90%20service%20manual-Final-0725.pdf 42 * 43 * 44 * 45 * Support for the Compal JHL90 added by Roald Frederickx 46 * (roald.frederickx@gmail.com): 47 * Driver got large revision. Added functionalities: backlight 48 * power, wake_on_XXX, a hwmon and power_supply interface. 49 * 50 * In case this gets merged into the kernel source: I want to dedicate this 51 * to Kasper Meerts, the awesome guy who showed me Linux and C! 52 */ 53 54 /* NOTE: currently the wake_on_XXX, hwmon and power_supply interfaces are 55 * only enabled on a JHL90 board until it is verified that they work on the 56 * other boards too. See the extra_features variable. */ 57 58 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 59 60 #include <linux/module.h> 61 #include <linux/kernel.h> 62 #include <linux/init.h> 63 #include <linux/acpi.h> 64 #include <linux/dmi.h> 65 #include <linux/backlight.h> 66 #include <linux/platform_device.h> 67 #include <linux/rfkill.h> 68 #include <linux/hwmon.h> 69 #include <linux/hwmon-sysfs.h> 70 #include <linux/power_supply.h> 71 #include <linux/fb.h> 72 #include <acpi/video.h> 73 74 /* ======= */ 75 /* Defines */ 76 /* ======= */ 77 #define DRIVER_NAME "compal-laptop" 78 #define DRIVER_VERSION "0.2.7" 79 80 #define BACKLIGHT_LEVEL_ADDR 0xB9 81 #define BACKLIGHT_LEVEL_MAX 7 82 #define BACKLIGHT_STATE_ADDR 0x59 83 #define BACKLIGHT_STATE_ON_DATA 0xE1 84 #define BACKLIGHT_STATE_OFF_DATA 0xE2 85 86 #define WAKE_UP_ADDR 0xA4 87 #define WAKE_UP_PME (1 << 0) 88 #define WAKE_UP_MODEM (1 << 1) 89 #define WAKE_UP_LAN (1 << 2) 90 #define WAKE_UP_WLAN (1 << 4) 91 #define WAKE_UP_KEY (1 << 6) 92 #define WAKE_UP_MOUSE (1 << 7) 93 94 #define WIRELESS_ADDR 0xBB 95 #define WIRELESS_WLAN (1 << 0) 96 #define WIRELESS_BT (1 << 1) 97 #define WIRELESS_WLAN_EXISTS (1 << 2) 98 #define WIRELESS_BT_EXISTS (1 << 3) 99 #define WIRELESS_KILLSWITCH (1 << 4) 100 101 #define PWM_ADDRESS 0x46 102 #define PWM_DISABLE_ADDR 0x59 103 #define PWM_DISABLE_DATA 0xA5 104 #define PWM_ENABLE_ADDR 0x59 105 #define PWM_ENABLE_DATA 0xA8 106 107 #define FAN_ADDRESS 0x46 108 #define FAN_DATA 0x81 109 #define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */ 110 #define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */ 111 #define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */ 112 113 #define TEMP_CPU 0xB0 114 #define TEMP_CPU_LOCAL 0xB1 115 #define TEMP_CPU_DTS 0xB5 116 #define TEMP_NORTHBRIDGE 0xB6 117 #define TEMP_VGA 0xB4 118 #define TEMP_SKIN 0xB2 119 120 #define BAT_MANUFACTURER_NAME_ADDR 0x10 121 #define BAT_MANUFACTURER_NAME_LEN 9 122 #define BAT_MODEL_NAME_ADDR 0x19 123 #define BAT_MODEL_NAME_LEN 6 124 #define BAT_SERIAL_NUMBER_ADDR 0xC4 125 #define BAT_SERIAL_NUMBER_LEN 5 126 #define BAT_CHARGE_NOW 0xC2 127 #define BAT_CHARGE_DESIGN 0xCA 128 #define BAT_VOLTAGE_NOW 0xC6 129 #define BAT_VOLTAGE_DESIGN 0xC8 130 #define BAT_CURRENT_NOW 0xD0 131 #define BAT_CURRENT_AVG 0xD2 132 #define BAT_POWER 0xD4 133 #define BAT_CAPACITY 0xCE 134 #define BAT_TEMP 0xD6 135 #define BAT_TEMP_AVG 0xD7 136 #define BAT_STATUS0 0xC1 137 #define BAT_STATUS1 0xF0 138 #define BAT_STATUS2 0xF1 139 #define BAT_STOP_CHARGE1 0xF2 140 #define BAT_STOP_CHARGE2 0xF3 141 #define BAT_CHARGE_LIMIT 0x03 142 #define BAT_CHARGE_LIMIT_MAX 100 143 144 #define BAT_S0_DISCHARGE (1 << 0) 145 #define BAT_S0_DISCHRG_CRITICAL (1 << 2) 146 #define BAT_S0_LOW (1 << 3) 147 #define BAT_S0_CHARGING (1 << 1) 148 #define BAT_S0_AC (1 << 7) 149 #define BAT_S1_EXISTS (1 << 0) 150 #define BAT_S1_FULL (1 << 1) 151 #define BAT_S1_EMPTY (1 << 2) 152 #define BAT_S1_LiION_OR_NiMH (1 << 7) 153 #define BAT_S2_LOW_LOW (1 << 0) 154 #define BAT_STOP_CHRG1_BAD_CELL (1 << 1) 155 #define BAT_STOP_CHRG1_COMM_FAIL (1 << 2) 156 #define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6) 157 #define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7) 158 159 160 /* ======= */ 161 /* Structs */ 162 /* ======= */ 163 struct compal_data{ 164 /* Fan control */ 165 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */ 166 unsigned char curr_pwm; 167 168 /* Power supply */ 169 struct power_supply *psy; 170 struct power_supply_info psy_info; 171 char bat_model_name[BAT_MODEL_NAME_LEN + 1]; 172 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1]; 173 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1]; 174 }; 175 176 177 /* =============== */ 178 /* General globals */ 179 /* =============== */ 180 static bool force; 181 module_param(force, bool, 0); 182 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data"); 183 184 /* Support for the wake_on_XXX, hwmon and power_supply interface. Currently 185 * only gets enabled on a JHL90 board. Might work with the others too */ 186 static bool extra_features; 187 188 /* Nasty stuff. For some reason the fan control is very un-linear. I've 189 * come up with these values by looping through the possible inputs and 190 * watching the output of address 0x4F (do an ec_transaction writing 0x33 191 * into 0x4F and read a few bytes from the output, like so: 192 * u8 writeData = 0x33; 193 * ec_transaction(0x4F, &writeData, 1, buffer, 32); 194 * That address is labeled "fan1 table information" in the service manual. 195 * It should be clear which value in 'buffer' changes). This seems to be 196 * related to fan speed. It isn't a proper 'realtime' fan speed value 197 * though, because physically stopping or speeding up the fan doesn't 198 * change it. It might be the average voltage or current of the pwm output. 199 * Nevertheless, it is more fine-grained than the actual RPM reading */ 200 static const unsigned char pwm_lookup_table[256] = { 201 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 202 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95, 203 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70, 204 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94, 205 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139, 206 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76, 207 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22, 208 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219, 209 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186, 210 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33, 211 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38, 212 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46, 213 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48, 214 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44, 215 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251, 216 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187, 217 187, 187, 193, 50 218 }; 219 220 221 222 223 /* ========================= */ 224 /* Hardware access functions */ 225 /* ========================= */ 226 /* General access */ 227 static u8 ec_read_u8(u8 addr) 228 { 229 u8 value = 0; 230 ec_read(addr, &value); 231 return value; 232 } 233 234 static s8 ec_read_s8(u8 addr) 235 { 236 return (s8)ec_read_u8(addr); 237 } 238 239 static u16 ec_read_u16(u8 addr) 240 { 241 int hi, lo; 242 lo = ec_read_u8(addr); 243 hi = ec_read_u8(addr + 1); 244 return (hi << 8) + lo; 245 } 246 247 static s16 ec_read_s16(u8 addr) 248 { 249 return (s16) ec_read_u16(addr); 250 } 251 252 static void ec_read_sequence(u8 addr, u8 *buf, int len) 253 { 254 int i; 255 for (i = 0; i < len; i++) 256 ec_read(addr + i, buf + i); 257 } 258 259 260 /* Backlight access */ 261 static int set_backlight_level(int level) 262 { 263 if (level < 0 || level > BACKLIGHT_LEVEL_MAX) 264 return -EINVAL; 265 266 ec_write(BACKLIGHT_LEVEL_ADDR, level); 267 268 return 0; 269 } 270 271 static int get_backlight_level(void) 272 { 273 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR); 274 } 275 276 static void set_backlight_state(bool on) 277 { 278 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA; 279 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0); 280 } 281 282 283 /* Fan control access */ 284 static void pwm_enable_control(void) 285 { 286 unsigned char writeData = PWM_ENABLE_DATA; 287 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0); 288 } 289 290 static void pwm_disable_control(void) 291 { 292 unsigned char writeData = PWM_DISABLE_DATA; 293 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0); 294 } 295 296 static void set_pwm(int pwm) 297 { 298 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0); 299 } 300 301 static int get_fan_rpm(void) 302 { 303 u8 value, data = FAN_DATA; 304 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1); 305 return 100 * (int)value; 306 } 307 308 309 310 311 /* =================== */ 312 /* Interface functions */ 313 /* =================== */ 314 315 /* Backlight interface */ 316 static int bl_get_brightness(struct backlight_device *b) 317 { 318 return get_backlight_level(); 319 } 320 321 static int bl_update_status(struct backlight_device *b) 322 { 323 int ret = set_backlight_level(b->props.brightness); 324 if (ret) 325 return ret; 326 327 set_backlight_state(!backlight_is_blank(b)); 328 return 0; 329 } 330 331 static const struct backlight_ops compalbl_ops = { 332 .get_brightness = bl_get_brightness, 333 .update_status = bl_update_status, 334 }; 335 336 337 /* Wireless interface */ 338 static int compal_rfkill_set(void *data, bool blocked) 339 { 340 unsigned long radio = (unsigned long) data; 341 u8 result = ec_read_u8(WIRELESS_ADDR); 342 u8 value; 343 344 if (!blocked) 345 value = (u8) (result | radio); 346 else 347 value = (u8) (result & ~radio); 348 ec_write(WIRELESS_ADDR, value); 349 350 return 0; 351 } 352 353 static void compal_rfkill_poll(struct rfkill *rfkill, void *data) 354 { 355 u8 result = ec_read_u8(WIRELESS_ADDR); 356 bool hw_blocked = !(result & WIRELESS_KILLSWITCH); 357 rfkill_set_hw_state(rfkill, hw_blocked); 358 } 359 360 static const struct rfkill_ops compal_rfkill_ops = { 361 .poll = compal_rfkill_poll, 362 .set_block = compal_rfkill_set, 363 }; 364 365 366 /* Wake_up interface */ 367 #define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \ 368 static ssize_t NAME##_show(struct device *dev, \ 369 struct device_attribute *attr, char *buf) \ 370 { \ 371 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \ 372 } \ 373 static ssize_t NAME##_store(struct device *dev, \ 374 struct device_attribute *attr, const char *buf, size_t count) \ 375 { \ 376 int state; \ 377 u8 old_val = ec_read_u8(ADDR); \ 378 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \ 379 return -EINVAL; \ 380 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \ 381 return count; \ 382 } 383 384 SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME) 385 SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM) 386 SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN) 387 SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN) 388 SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY) 389 SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE) 390 391 /* Fan control interface */ 392 static ssize_t pwm_enable_show(struct device *dev, 393 struct device_attribute *attr, char *buf) 394 { 395 struct compal_data *data = dev_get_drvdata(dev); 396 return sprintf(buf, "%d\n", data->pwm_enable); 397 } 398 399 static ssize_t pwm_enable_store(struct device *dev, 400 struct device_attribute *attr, const char *buf, size_t count) 401 { 402 struct compal_data *data = dev_get_drvdata(dev); 403 long val; 404 int err; 405 406 err = kstrtol(buf, 10, &val); 407 if (err) 408 return err; 409 if (val < 0) 410 return -EINVAL; 411 412 data->pwm_enable = val; 413 414 switch (val) { 415 case 0: /* Full speed */ 416 pwm_enable_control(); 417 set_pwm(255); 418 break; 419 case 1: /* As set by pwm1 */ 420 pwm_enable_control(); 421 set_pwm(data->curr_pwm); 422 break; 423 default: /* Control by motherboard */ 424 pwm_disable_control(); 425 break; 426 } 427 428 return count; 429 } 430 431 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, 432 char *buf) 433 { 434 struct compal_data *data = dev_get_drvdata(dev); 435 return sprintf(buf, "%hhu\n", data->curr_pwm); 436 } 437 438 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, 439 const char *buf, size_t count) 440 { 441 struct compal_data *data = dev_get_drvdata(dev); 442 long val; 443 int err; 444 445 err = kstrtol(buf, 10, &val); 446 if (err) 447 return err; 448 if (val < 0 || val > 255) 449 return -EINVAL; 450 451 data->curr_pwm = val; 452 453 if (data->pwm_enable != 1) 454 return count; 455 set_pwm(val); 456 457 return count; 458 } 459 460 static ssize_t fan_show(struct device *dev, struct device_attribute *attr, 461 char *buf) 462 { 463 return sprintf(buf, "%d\n", get_fan_rpm()); 464 } 465 466 467 /* Temperature interface */ 468 #define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \ 469 static ssize_t temp_##POSTFIX(struct device *dev, \ 470 struct device_attribute *attr, char *buf) \ 471 { \ 472 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \ 473 } \ 474 static ssize_t label_##POSTFIX(struct device *dev, \ 475 struct device_attribute *attr, char *buf) \ 476 { \ 477 return sprintf(buf, "%s\n", LABEL); \ 478 } 479 480 /* Labels as in service guide */ 481 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP"); 482 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL"); 483 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS"); 484 TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge"); 485 TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP"); 486 TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90"); 487 488 489 /* Power supply interface */ 490 static int bat_status(void) 491 { 492 u8 status0 = ec_read_u8(BAT_STATUS0); 493 u8 status1 = ec_read_u8(BAT_STATUS1); 494 495 if (status0 & BAT_S0_CHARGING) 496 return POWER_SUPPLY_STATUS_CHARGING; 497 if (status0 & BAT_S0_DISCHARGE) 498 return POWER_SUPPLY_STATUS_DISCHARGING; 499 if (status1 & BAT_S1_FULL) 500 return POWER_SUPPLY_STATUS_FULL; 501 return POWER_SUPPLY_STATUS_NOT_CHARGING; 502 } 503 504 static int bat_health(void) 505 { 506 u8 status = ec_read_u8(BAT_STOP_CHARGE1); 507 508 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE) 509 return POWER_SUPPLY_HEALTH_OVERHEAT; 510 if (status & BAT_STOP_CHRG1_OVERVOLTAGE) 511 return POWER_SUPPLY_HEALTH_OVERVOLTAGE; 512 if (status & BAT_STOP_CHRG1_BAD_CELL) 513 return POWER_SUPPLY_HEALTH_DEAD; 514 if (status & BAT_STOP_CHRG1_COMM_FAIL) 515 return POWER_SUPPLY_HEALTH_UNKNOWN; 516 return POWER_SUPPLY_HEALTH_GOOD; 517 } 518 519 static int bat_is_present(void) 520 { 521 u8 status = ec_read_u8(BAT_STATUS2); 522 return ((status & BAT_S1_EXISTS) != 0); 523 } 524 525 static int bat_technology(void) 526 { 527 u8 status = ec_read_u8(BAT_STATUS1); 528 529 if (status & BAT_S1_LiION_OR_NiMH) 530 return POWER_SUPPLY_TECHNOLOGY_LION; 531 return POWER_SUPPLY_TECHNOLOGY_NiMH; 532 } 533 534 static int bat_capacity_level(void) 535 { 536 u8 status0 = ec_read_u8(BAT_STATUS0); 537 u8 status1 = ec_read_u8(BAT_STATUS1); 538 u8 status2 = ec_read_u8(BAT_STATUS2); 539 540 if (status0 & BAT_S0_DISCHRG_CRITICAL 541 || status1 & BAT_S1_EMPTY 542 || status2 & BAT_S2_LOW_LOW) 543 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; 544 if (status0 & BAT_S0_LOW) 545 return POWER_SUPPLY_CAPACITY_LEVEL_LOW; 546 if (status1 & BAT_S1_FULL) 547 return POWER_SUPPLY_CAPACITY_LEVEL_FULL; 548 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; 549 } 550 551 static int bat_get_property(struct power_supply *psy, 552 enum power_supply_property psp, 553 union power_supply_propval *val) 554 { 555 struct compal_data *data = power_supply_get_drvdata(psy); 556 557 switch (psp) { 558 case POWER_SUPPLY_PROP_STATUS: 559 val->intval = bat_status(); 560 break; 561 case POWER_SUPPLY_PROP_HEALTH: 562 val->intval = bat_health(); 563 break; 564 case POWER_SUPPLY_PROP_PRESENT: 565 val->intval = bat_is_present(); 566 break; 567 case POWER_SUPPLY_PROP_TECHNOLOGY: 568 val->intval = bat_technology(); 569 break; 570 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */ 571 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000; 572 break; 573 case POWER_SUPPLY_PROP_VOLTAGE_NOW: 574 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000; 575 break; 576 case POWER_SUPPLY_PROP_CURRENT_NOW: 577 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000; 578 break; 579 case POWER_SUPPLY_PROP_CURRENT_AVG: 580 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000; 581 break; 582 case POWER_SUPPLY_PROP_POWER_NOW: 583 val->intval = ec_read_u8(BAT_POWER) * 1000000; 584 break; 585 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: 586 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000; 587 break; 588 case POWER_SUPPLY_PROP_CHARGE_NOW: 589 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000; 590 break; 591 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: 592 val->intval = ec_read_u8(BAT_CHARGE_LIMIT); 593 break; 594 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX: 595 val->intval = BAT_CHARGE_LIMIT_MAX; 596 break; 597 case POWER_SUPPLY_PROP_CAPACITY: 598 val->intval = ec_read_u8(BAT_CAPACITY); 599 break; 600 case POWER_SUPPLY_PROP_CAPACITY_LEVEL: 601 val->intval = bat_capacity_level(); 602 break; 603 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing 604 * the number of degrees, whereas BAT_TEMP is somewhat more 605 * complicated. It looks like this is a negative nember with a 606 * 100/256 divider and an offset of 222. Both were determined 607 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */ 608 case POWER_SUPPLY_PROP_TEMP: 609 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8; 610 break; 611 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */ 612 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10; 613 break; 614 /* Neither the model name nor manufacturer name work for me. */ 615 case POWER_SUPPLY_PROP_MODEL_NAME: 616 val->strval = data->bat_model_name; 617 break; 618 case POWER_SUPPLY_PROP_MANUFACTURER: 619 val->strval = data->bat_manufacturer_name; 620 break; 621 case POWER_SUPPLY_PROP_SERIAL_NUMBER: 622 val->strval = data->bat_serial_number; 623 break; 624 default: 625 break; 626 } 627 return 0; 628 } 629 630 static int bat_set_property(struct power_supply *psy, 631 enum power_supply_property psp, 632 const union power_supply_propval *val) 633 { 634 int level; 635 636 switch (psp) { 637 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: 638 level = val->intval; 639 if (level < 0 || level > BAT_CHARGE_LIMIT_MAX) 640 return -EINVAL; 641 if (ec_write(BAT_CHARGE_LIMIT, level) < 0) 642 return -EIO; 643 break; 644 default: 645 break; 646 } 647 return 0; 648 } 649 650 static int bat_writeable_property(struct power_supply *psy, 651 enum power_supply_property psp) 652 { 653 switch (psp) { 654 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: 655 return 1; 656 default: 657 return 0; 658 } 659 } 660 661 662 663 664 /* ============== */ 665 /* Driver Globals */ 666 /* ============== */ 667 static DEVICE_ATTR_RW(wake_up_pme); 668 static DEVICE_ATTR_RW(wake_up_modem); 669 static DEVICE_ATTR_RW(wake_up_lan); 670 static DEVICE_ATTR_RW(wake_up_wlan); 671 static DEVICE_ATTR_RW(wake_up_key); 672 static DEVICE_ATTR_RW(wake_up_mouse); 673 674 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL); 675 static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL); 676 static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL); 677 static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL); 678 static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL); 679 static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL); 680 static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL); 681 static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL); 682 static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL); 683 static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL); 684 static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL); 685 static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL); 686 static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL); 687 static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store); 688 static DEVICE_ATTR(pwm1_enable, 689 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store); 690 691 static struct attribute *compal_platform_attrs[] = { 692 &dev_attr_wake_up_pme.attr, 693 &dev_attr_wake_up_modem.attr, 694 &dev_attr_wake_up_lan.attr, 695 &dev_attr_wake_up_wlan.attr, 696 &dev_attr_wake_up_key.attr, 697 &dev_attr_wake_up_mouse.attr, 698 NULL 699 }; 700 static const struct attribute_group compal_platform_attr_group = { 701 .attrs = compal_platform_attrs 702 }; 703 704 static struct attribute *compal_hwmon_attrs[] = { 705 &dev_attr_pwm1_enable.attr, 706 &dev_attr_pwm1.attr, 707 &dev_attr_fan1_input.attr, 708 &dev_attr_temp1_input.attr, 709 &dev_attr_temp2_input.attr, 710 &dev_attr_temp3_input.attr, 711 &dev_attr_temp4_input.attr, 712 &dev_attr_temp5_input.attr, 713 &dev_attr_temp6_input.attr, 714 &dev_attr_temp1_label.attr, 715 &dev_attr_temp2_label.attr, 716 &dev_attr_temp3_label.attr, 717 &dev_attr_temp4_label.attr, 718 &dev_attr_temp5_label.attr, 719 &dev_attr_temp6_label.attr, 720 NULL 721 }; 722 ATTRIBUTE_GROUPS(compal_hwmon); 723 724 static int compal_probe(struct platform_device *); 725 static int compal_remove(struct platform_device *); 726 static struct platform_driver compal_driver = { 727 .driver = { 728 .name = DRIVER_NAME, 729 }, 730 .probe = compal_probe, 731 .remove = compal_remove, 732 }; 733 734 static enum power_supply_property compal_bat_properties[] = { 735 POWER_SUPPLY_PROP_STATUS, 736 POWER_SUPPLY_PROP_HEALTH, 737 POWER_SUPPLY_PROP_PRESENT, 738 POWER_SUPPLY_PROP_TECHNOLOGY, 739 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, 740 POWER_SUPPLY_PROP_VOLTAGE_NOW, 741 POWER_SUPPLY_PROP_CURRENT_NOW, 742 POWER_SUPPLY_PROP_CURRENT_AVG, 743 POWER_SUPPLY_PROP_POWER_NOW, 744 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 745 POWER_SUPPLY_PROP_CHARGE_NOW, 746 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, 747 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, 748 POWER_SUPPLY_PROP_CAPACITY, 749 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 750 POWER_SUPPLY_PROP_TEMP, 751 POWER_SUPPLY_PROP_TEMP_AMBIENT, 752 POWER_SUPPLY_PROP_MODEL_NAME, 753 POWER_SUPPLY_PROP_MANUFACTURER, 754 POWER_SUPPLY_PROP_SERIAL_NUMBER, 755 }; 756 757 static struct backlight_device *compalbl_device; 758 759 static struct platform_device *compal_device; 760 761 static struct rfkill *wifi_rfkill; 762 static struct rfkill *bt_rfkill; 763 764 765 766 767 768 /* =================================== */ 769 /* Initialization & clean-up functions */ 770 /* =================================== */ 771 772 static int dmi_check_cb(const struct dmi_system_id *id) 773 { 774 pr_info("Identified laptop model '%s'\n", id->ident); 775 extra_features = false; 776 return 1; 777 } 778 779 static int dmi_check_cb_extra(const struct dmi_system_id *id) 780 { 781 pr_info("Identified laptop model '%s', enabling extra features\n", 782 id->ident); 783 extra_features = true; 784 return 1; 785 } 786 787 static const struct dmi_system_id compal_dmi_table[] __initconst = { 788 { 789 .ident = "FL90/IFL90", 790 .matches = { 791 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 792 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 793 }, 794 .callback = dmi_check_cb 795 }, 796 { 797 .ident = "FL90/IFL90", 798 .matches = { 799 DMI_MATCH(DMI_BOARD_NAME, "IFL90"), 800 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 801 }, 802 .callback = dmi_check_cb 803 }, 804 { 805 .ident = "FL91/IFL91", 806 .matches = { 807 DMI_MATCH(DMI_BOARD_NAME, "IFL91"), 808 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 809 }, 810 .callback = dmi_check_cb 811 }, 812 { 813 .ident = "FL92/JFL92", 814 .matches = { 815 DMI_MATCH(DMI_BOARD_NAME, "JFL92"), 816 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 817 }, 818 .callback = dmi_check_cb 819 }, 820 { 821 .ident = "FT00/IFT00", 822 .matches = { 823 DMI_MATCH(DMI_BOARD_NAME, "IFT00"), 824 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"), 825 }, 826 .callback = dmi_check_cb 827 }, 828 { 829 .ident = "Dell Mini 9", 830 .matches = { 831 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 832 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"), 833 }, 834 .callback = dmi_check_cb 835 }, 836 { 837 .ident = "Dell Mini 10", 838 .matches = { 839 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 840 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"), 841 }, 842 .callback = dmi_check_cb 843 }, 844 { 845 .ident = "Dell Mini 10v", 846 .matches = { 847 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 848 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"), 849 }, 850 .callback = dmi_check_cb 851 }, 852 { 853 .ident = "Dell Mini 1012", 854 .matches = { 855 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 856 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"), 857 }, 858 .callback = dmi_check_cb 859 }, 860 { 861 .ident = "Dell Inspiron 11z", 862 .matches = { 863 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 864 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"), 865 }, 866 .callback = dmi_check_cb 867 }, 868 { 869 .ident = "Dell Mini 12", 870 .matches = { 871 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 872 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"), 873 }, 874 .callback = dmi_check_cb 875 }, 876 { 877 .ident = "JHL90", 878 .matches = { 879 DMI_MATCH(DMI_BOARD_NAME, "JHL90"), 880 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 881 }, 882 .callback = dmi_check_cb_extra 883 }, 884 { 885 .ident = "KHLB2", 886 .matches = { 887 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"), 888 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"), 889 }, 890 .callback = dmi_check_cb_extra 891 }, 892 { } 893 }; 894 MODULE_DEVICE_TABLE(dmi, compal_dmi_table); 895 896 static const struct power_supply_desc psy_bat_desc = { 897 .name = DRIVER_NAME, 898 .type = POWER_SUPPLY_TYPE_BATTERY, 899 .properties = compal_bat_properties, 900 .num_properties = ARRAY_SIZE(compal_bat_properties), 901 .get_property = bat_get_property, 902 .set_property = bat_set_property, 903 .property_is_writeable = bat_writeable_property, 904 }; 905 906 static void initialize_power_supply_data(struct compal_data *data) 907 { 908 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR, 909 data->bat_manufacturer_name, 910 BAT_MANUFACTURER_NAME_LEN); 911 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0; 912 913 ec_read_sequence(BAT_MODEL_NAME_ADDR, 914 data->bat_model_name, 915 BAT_MODEL_NAME_LEN); 916 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0; 917 918 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d", 919 ec_read_u16(BAT_SERIAL_NUMBER_ADDR)); 920 } 921 922 static void initialize_fan_control_data(struct compal_data *data) 923 { 924 data->pwm_enable = 2; /* Keep motherboard in control for now */ 925 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception 926 if we take over... */ 927 } 928 929 static int setup_rfkill(void) 930 { 931 int ret; 932 933 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev, 934 RFKILL_TYPE_WLAN, &compal_rfkill_ops, 935 (void *) WIRELESS_WLAN); 936 if (!wifi_rfkill) 937 return -ENOMEM; 938 939 ret = rfkill_register(wifi_rfkill); 940 if (ret) 941 goto err_wifi; 942 943 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev, 944 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops, 945 (void *) WIRELESS_BT); 946 if (!bt_rfkill) { 947 ret = -ENOMEM; 948 goto err_allocate_bt; 949 } 950 ret = rfkill_register(bt_rfkill); 951 if (ret) 952 goto err_register_bt; 953 954 return 0; 955 956 err_register_bt: 957 rfkill_destroy(bt_rfkill); 958 959 err_allocate_bt: 960 rfkill_unregister(wifi_rfkill); 961 962 err_wifi: 963 rfkill_destroy(wifi_rfkill); 964 965 return ret; 966 } 967 968 static int __init compal_init(void) 969 { 970 int ret; 971 972 if (acpi_disabled) { 973 pr_err("ACPI needs to be enabled for this driver to work!\n"); 974 return -ENODEV; 975 } 976 977 if (!force && !dmi_check_system(compal_dmi_table)) { 978 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n"); 979 return -ENODEV; 980 } 981 982 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) { 983 struct backlight_properties props; 984 memset(&props, 0, sizeof(struct backlight_properties)); 985 props.type = BACKLIGHT_PLATFORM; 986 props.max_brightness = BACKLIGHT_LEVEL_MAX; 987 compalbl_device = backlight_device_register(DRIVER_NAME, 988 NULL, NULL, 989 &compalbl_ops, 990 &props); 991 if (IS_ERR(compalbl_device)) 992 return PTR_ERR(compalbl_device); 993 } 994 995 ret = platform_driver_register(&compal_driver); 996 if (ret) 997 goto err_backlight; 998 999 compal_device = platform_device_alloc(DRIVER_NAME, -1); 1000 if (!compal_device) { 1001 ret = -ENOMEM; 1002 goto err_platform_driver; 1003 } 1004 1005 ret = platform_device_add(compal_device); /* This calls compal_probe */ 1006 if (ret) 1007 goto err_platform_device; 1008 1009 ret = setup_rfkill(); 1010 if (ret) 1011 goto err_rfkill; 1012 1013 pr_info("Driver " DRIVER_VERSION " successfully loaded\n"); 1014 return 0; 1015 1016 err_rfkill: 1017 platform_device_del(compal_device); 1018 1019 err_platform_device: 1020 platform_device_put(compal_device); 1021 1022 err_platform_driver: 1023 platform_driver_unregister(&compal_driver); 1024 1025 err_backlight: 1026 backlight_device_unregister(compalbl_device); 1027 1028 return ret; 1029 } 1030 1031 static int compal_probe(struct platform_device *pdev) 1032 { 1033 int err; 1034 struct compal_data *data; 1035 struct device *hwmon_dev; 1036 struct power_supply_config psy_cfg = {}; 1037 1038 if (!extra_features) 1039 return 0; 1040 1041 /* Fan control */ 1042 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL); 1043 if (!data) 1044 return -ENOMEM; 1045 1046 initialize_fan_control_data(data); 1047 1048 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group); 1049 if (err) 1050 return err; 1051 1052 hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev, 1053 "compal", data, 1054 compal_hwmon_groups); 1055 if (IS_ERR(hwmon_dev)) { 1056 err = PTR_ERR(hwmon_dev); 1057 goto remove; 1058 } 1059 1060 /* Power supply */ 1061 initialize_power_supply_data(data); 1062 psy_cfg.drv_data = data; 1063 data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc, 1064 &psy_cfg); 1065 if (IS_ERR(data->psy)) { 1066 err = PTR_ERR(data->psy); 1067 goto remove; 1068 } 1069 1070 platform_set_drvdata(pdev, data); 1071 1072 return 0; 1073 1074 remove: 1075 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group); 1076 return err; 1077 } 1078 1079 static void __exit compal_cleanup(void) 1080 { 1081 platform_device_unregister(compal_device); 1082 platform_driver_unregister(&compal_driver); 1083 backlight_device_unregister(compalbl_device); 1084 rfkill_unregister(wifi_rfkill); 1085 rfkill_unregister(bt_rfkill); 1086 rfkill_destroy(wifi_rfkill); 1087 rfkill_destroy(bt_rfkill); 1088 1089 pr_info("Driver unloaded\n"); 1090 } 1091 1092 static int compal_remove(struct platform_device *pdev) 1093 { 1094 struct compal_data *data; 1095 1096 if (!extra_features) 1097 return 0; 1098 1099 pr_info("Unloading: resetting fan control to motherboard\n"); 1100 pwm_disable_control(); 1101 1102 data = platform_get_drvdata(pdev); 1103 power_supply_unregister(data->psy); 1104 1105 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group); 1106 1107 return 0; 1108 } 1109 1110 1111 module_init(compal_init); 1112 module_exit(compal_cleanup); 1113 1114 MODULE_AUTHOR("Cezary Jackiewicz"); 1115 MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)"); 1116 MODULE_DESCRIPTION("Compal Laptop Support"); 1117 MODULE_VERSION(DRIVER_VERSION); 1118 MODULE_LICENSE("GPL"); 1119