drivers/platform/x86/compal-laptop.c

   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 #include <linux/module.h>
  72 #include <linux/kernel.h>
  73 #include <linux/init.h>
  74 #include <linux/acpi.h>
  75 #include <linux/dmi.h>
  76 #include <linux/backlight.h>
  77 #include <linux/platform_device.h>
  78 #include <linux/rfkill.h>
  79 #include <linux/hwmon.h>
  80 #include <linux/hwmon-sysfs.h>
  81 #include <linux/power_supply.h>
  82 #include <linux/fb.h>
  83
  84
  85 /* ======= */
  86 /* Defines */
  87 /* ======= */
  88 #define DRIVER_NAME "compal-laptop"
  89 #define DRIVER_VERSION  "0.2.7"
  90
  91 #define BACKLIGHT_LEVEL_ADDR            0xB9
  92 #define BACKLIGHT_LEVEL_MAX             7
  93 #define BACKLIGHT_STATE_ADDR            0x59
  94 #define BACKLIGHT_STATE_ON_DATA         0xE1
  95 #define BACKLIGHT_STATE_OFF_DATA        0xE2
  96
  97 #define WAKE_UP_ADDR                    0xA4
  98 #define WAKE_UP_PME                     (1 << 0)
  99 #define WAKE_UP_MODEM                   (1 << 1)
 100 #define WAKE_UP_LAN                     (1 << 2)
 101 #define WAKE_UP_WLAN                    (1 << 4)
 102 #define WAKE_UP_KEY                     (1 << 6)
 103 #define WAKE_UP_MOUSE                   (1 << 7)
 104
 105 #define WIRELESS_ADDR                   0xBB
 106 #define WIRELESS_WLAN                   (1 << 0)
 107 #define WIRELESS_BT                     (1 << 1)
 108 #define WIRELESS_WLAN_EXISTS            (1 << 2)
 109 #define WIRELESS_BT_EXISTS              (1 << 3)
 110 #define WIRELESS_KILLSWITCH             (1 << 4)
 111
 112 #define PWM_ADDRESS                     0x46
 113 #define PWM_DISABLE_ADDR                0x59
 114 #define PWM_DISABLE_DATA                0xA5
 115 #define PWM_ENABLE_ADDR                 0x59
 116 #define PWM_ENABLE_DATA                 0xA8
 117
 118 #define FAN_ADDRESS                     0x46
 119 #define FAN_DATA                        0x81
 120 #define FAN_FULL_ON_CMD                 0x59 /* Doesn't seem to work. Just */
 121 #define FAN_FULL_ON_ENABLE              0x76 /* force the pwm signal to its */
 122 #define FAN_FULL_ON_DISABLE             0x77 /* maximum value instead */
 123
 124 #define TEMP_CPU                        0xB0
 125 #define TEMP_CPU_LOCAL                  0xB1
 126 #define TEMP_CPU_DTS                    0xB5
 127 #define TEMP_NORTHBRIDGE                0xB6
 128 #define TEMP_VGA                        0xB4
 129 #define TEMP_SKIN                       0xB2
 130
 131 #define BAT_MANUFACTURER_NAME_ADDR      0x10
 132 #define BAT_MANUFACTURER_NAME_LEN       9
 133 #define BAT_MODEL_NAME_ADDR             0x19
 134 #define BAT_MODEL_NAME_LEN              6
 135 #define BAT_SERIAL_NUMBER_ADDR          0xC4
 136 #define BAT_SERIAL_NUMBER_LEN           5
 137 #define BAT_CHARGE_NOW                  0xC2
 138 #define BAT_CHARGE_DESIGN               0xCA
 139 #define BAT_VOLTAGE_NOW                 0xC6
 140 #define BAT_VOLTAGE_DESIGN              0xC8
 141 #define BAT_CURRENT_NOW                 0xD0
 142 #define BAT_CURRENT_AVG                 0xD2
 143 #define BAT_POWER                       0xD4
 144 #define BAT_CAPACITY                    0xCE
 145 #define BAT_TEMP                        0xD6
 146 #define BAT_TEMP_AVG                    0xD7
 147 #define BAT_STATUS0                     0xC1
 148 #define BAT_STATUS1                     0xF0
 149 #define BAT_STATUS2                     0xF1
 150 #define BAT_STOP_CHARGE1                0xF2
 151 #define BAT_STOP_CHARGE2                0xF3
 152
 153 #define BAT_S0_DISCHARGE                (1 << 0)
 154 #define BAT_S0_DISCHRG_CRITICAL         (1 << 2)
 155 #define BAT_S0_LOW                      (1 << 3)
 156 #define BAT_S0_CHARGING                 (1 << 1)
 157 #define BAT_S0_AC                       (1 << 7)
 158 #define BAT_S1_EXISTS                   (1 << 0)
 159 #define BAT_S1_FULL                     (1 << 1)
 160 #define BAT_S1_EMPTY                    (1 << 2)
 161 #define BAT_S1_LiION_OR_NiMH            (1 << 7)
 162 #define BAT_S2_LOW_LOW                  (1 << 0)
 163 #define BAT_STOP_CHRG1_BAD_CELL         (1 << 1)
 164 #define BAT_STOP_CHRG1_COMM_FAIL        (1 << 2)
 165 #define BAT_STOP_CHRG1_OVERVOLTAGE      (1 << 6)
 166 #define BAT_STOP_CHRG1_OVERTEMPERATURE  (1 << 7)
 167
 168
 169 /* ======= */
 170 /* Structs */
 171 /* ======= */
 172 struct compal_data{
 173         /* Fan control */
 174         struct device *hwmon_dev;
 175         int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by moterboard */
 176         unsigned char curr_pwm;
 177
 178         /* Power supply */
 179         struct power_supply psy;
 180         struct power_supply_info psy_info;
 181         char bat_model_name[BAT_MODEL_NAME_LEN + 1];
 182         char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
 183         char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
 184 };
 185
 186
 187 /* =============== */
 188 /* General globals */
 189 /* =============== */
 190 static int force;
 191 module_param(force, bool, 0);
 192 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
 193
 194 /* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
 195  * only gets enabled on a JHL90 board. Might work with the others too */
 196 static bool extra_features;
 197
 198 /* Nasty stuff. For some reason the fan control is very un-linear.  I've
 199  * come up with these values by looping through the possible inputs and
 200  * watching the output of address 0x4F (do an ec_transaction writing 0x33
 201  * into 0x4F and read a few bytes from the output, like so:
 202  *      u8 writeData = 0x33;
 203  *      ec_transaction(0x4F, &writeData, 1, buffer, 32, 0);
 204  * That address is labled "fan1 table information" in the service manual.
 205  * It should be clear which value in 'buffer' changes). This seems to be
 206  * related to fan speed. It isn't a proper 'realtime' fan speed value
 207  * though, because physically stopping or speeding up the fan doesn't
 208  * change it. It might be the average voltage or current of the pwm output.
 209  * Nevertheless, it is more fine-grained than the actual RPM reading */
 210 static const unsigned char pwm_lookup_table[256] = {
 211         0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
 212         7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
 213         13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
 214         75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
 215         94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
 216         139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
 217         76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
 218         22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
 219         219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
 220         186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
 221         33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
 222         206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
 223         47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
 224         48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
 225         189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
 226         191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
 227         187, 187, 193, 50
 228 };
 229
 230
 231
 232
 233 /* ========================= */
 234 /* Hardware access functions */
 235 /* ========================= */
 236 /* General access */
 237 static u8 ec_read_u8(u8 addr)
 238 {
 239         u8 value;
 240         ec_read(addr, &value);
 241         return value;
 242 }
 243
 244 static s8 ec_read_s8(u8 addr)
 245 {
 246         return (s8)ec_read_u8(addr);
 247 }
 248
 249 static u16 ec_read_u16(u8 addr)
 250 {
 251         int hi, lo;
 252         lo = ec_read_u8(addr);
 253         hi = ec_read_u8(addr + 1);
 254         return (hi << 8) + lo;
 255 }
 256
 257 static s16 ec_read_s16(u8 addr)
 258 {
 259         return (s16) ec_read_u16(addr);
 260 }
 261
 262 static void ec_read_sequence(u8 addr, u8 *buf, int len)
 263 {
 264         int i;
 265         for (i = 0; i < len; i++)
 266                 ec_read(addr + i, buf + i);
 267 }
 268
 269
 270 /* Backlight access */
 271 static int set_backlight_level(int level)
 272 {
 273         if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
 274                 return -EINVAL;
 275
 276         ec_write(BACKLIGHT_LEVEL_ADDR, level);
 277
 278         return 0;
 279 }
 280
 281 static int get_backlight_level(void)
 282 {
 283         return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
 284 }
 285
 286 static void set_backlight_state(bool on)
 287 {
 288         u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
 289         ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0, 0);
 290 }
 291
 292
 293 /* Fan control access */
 294 static void pwm_enable_control(void)
 295 {
 296         unsigned char writeData = PWM_ENABLE_DATA;
 297         ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0, 0);
 298 }
 299
 300 static void pwm_disable_control(void)
 301 {
 302         unsigned char writeData = PWM_DISABLE_DATA;
 303         ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0, 0);
 304 }
 305
 306 static void set_pwm(int pwm)
 307 {
 308         ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0, 0);
 309 }
 310
 311 static int get_fan_rpm(void)
 312 {
 313         u8 value, data = FAN_DATA;
 314         ec_transaction(FAN_ADDRESS, &data, 1, &value, 1, 0);
 315         return 100 * (int)value;
 316 }
 317
 318
 319
 320
 321 /* =================== */
 322 /* Interface functions */
 323 /* =================== */
 324
 325 /* Backlight interface */
 326 static int bl_get_brightness(struct backlight_device *b)
 327 {
 328         return get_backlight_level();
 329 }
 330
 331 static int bl_update_status(struct backlight_device *b)
 332 {
 333         int ret = set_backlight_level(b->props.brightness);
 334         if (ret)
 335                 return ret;
 336
 337         set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
 338                 &&    !(b->props.state & BL_CORE_SUSPENDED)
 339                 &&    !(b->props.state & BL_CORE_FBBLANK));
 340         return 0;
 341 }
 342
 343 static const struct backlight_ops compalbl_ops = {
 344         .get_brightness = bl_get_brightness,
 345         .update_status  = bl_update_status,
 346 };
 347
 348
 349 /* Wireless interface */
 350 static int compal_rfkill_set(void *data, bool blocked)
 351 {
 352         unsigned long radio = (unsigned long) data;
 353         u8 result = ec_read_u8(WIRELESS_ADDR);
 354         u8 value;
 355
 356         if (!blocked)
 357                 value = (u8) (result | radio);
 358         else
 359                 value = (u8) (result & ~radio);
 360         ec_write(WIRELESS_ADDR, value);
 361
 362         return 0;
 363 }
 364
 365 static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
 366 {
 367         u8 result = ec_read_u8(WIRELESS_ADDR);
 368         bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
 369         rfkill_set_hw_state(rfkill, hw_blocked);
 370 }
 371
 372 static const struct rfkill_ops compal_rfkill_ops = {
 373         .poll = compal_rfkill_poll,
 374         .set_block = compal_rfkill_set,
 375 };
 376
 377
 378 /* Wake_up interface */
 379 #define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK)                      \
 380 static ssize_t NAME##_show(struct device *dev,                          \
 381         struct device_attribute *attr, char *buf)                       \
 382 {                                                                       \
 383         return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0));  \
 384 }                                                                       \
 385 static ssize_t NAME##_store(struct device *dev,                         \
 386         struct device_attribute *attr, const char *buf, size_t count)   \
 387 {                                                                       \
 388         int state;                                                      \
 389         u8 old_val = ec_read_u8(ADDR);                                  \
 390         if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
 391                 return -EINVAL;                                         \
 392         ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK));   \
 393         return count;                                                   \
 394 }
 395
 396 SIMPLE_MASKED_STORE_SHOW(wake_up_pme,   WAKE_UP_ADDR, WAKE_UP_PME)
 397 SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
 398 SIMPLE_MASKED_STORE_SHOW(wake_up_lan,   WAKE_UP_ADDR, WAKE_UP_LAN)
 399 SIMPLE_MASKED_STORE_SHOW(wake_up_wlan,  WAKE_UP_ADDR, WAKE_UP_WLAN)
 400 SIMPLE_MASKED_STORE_SHOW(wake_up_key,   WAKE_UP_ADDR, WAKE_UP_KEY)
 401 SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
 402
 403
 404 /* General hwmon interface */
 405 static ssize_t hwmon_name_show(struct device *dev,
 406                 struct device_attribute *attr, char *buf)
 407 {
 408         return sprintf(buf, "%s\n", DRIVER_NAME);
 409 }
 410
 411
 412 /* Fan control interface */
 413 static ssize_t pwm_enable_show(struct device *dev,
 414                 struct device_attribute *attr, char *buf)
 415 {
 416         struct compal_data *data = dev_get_drvdata(dev);
 417         return sprintf(buf, "%d\n", data->pwm_enable);
 418 }
 419
 420 static ssize_t pwm_enable_store(struct device *dev,
 421                 struct device_attribute *attr, const char *buf, size_t count)
 422 {
 423         struct compal_data *data = dev_get_drvdata(dev);
 424         long val;
 425         int err;
 426         err = strict_strtol(buf, 10, &val);
 427         if (err)
 428                 return err;
 429         if (val < 0)
 430                 return -EINVAL;
 431
 432         data->pwm_enable = val;
 433
 434         switch (val) {
 435         case 0:  /* Full speed */
 436                 pwm_enable_control();
 437                 set_pwm(255);
 438                 break;
 439         case 1:  /* As set by pwm1 */
 440                 pwm_enable_control();
 441                 set_pwm(data->curr_pwm);
 442                 break;
 443         default: /* Control by motherboard */
 444                 pwm_disable_control();
 445                 break;
 446         }
 447
 448         return count;
 449 }
 450
 451 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
 452                 char *buf)
 453 {
 454         struct compal_data *data = dev_get_drvdata(dev);
 455         return sprintf(buf, "%hhu\n", data->curr_pwm);
 456 }
 457
 458 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
 459                 const char *buf, size_t count)
 460 {
 461         struct compal_data *data = dev_get_drvdata(dev);
 462         long val;
 463         int err;
 464         err = strict_strtol(buf, 10, &val);
 465         if (err)
 466                 return err;
 467         if (val < 0 || val > 255)
 468                 return -EINVAL;
 469
 470         data->curr_pwm = val;
 471
 472         if (data->pwm_enable != 1)
 473                 return count;
 474         set_pwm(val);
 475
 476         return count;
 477 }
 478
 479 static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
 480                 char *buf)
 481 {
 482         return sprintf(buf, "%d\n", get_fan_rpm());
 483 }
 484
 485
 486 /* Temperature interface */
 487 #define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL)        \
 488 static ssize_t temp_##POSTFIX(struct device *dev,                       \
 489                 struct device_attribute *attr, char *buf)               \
 490 {                                                                       \
 491         return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS));   \
 492 }                                                                       \
 493 static ssize_t label_##POSTFIX(struct device *dev,                      \
 494                 struct device_attribute *attr, char *buf)               \
 495 {                                                                       \
 496         return sprintf(buf, "%s\n", LABEL);                             \
 497 }
 498
 499 /* Labels as in service guide */
 500 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu,        TEMP_CPU,        "CPU_TEMP");
 501 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local,  TEMP_CPU_LOCAL,  "CPU_TEMP_LOCAL");
 502 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS,    TEMP_CPU_DTS,    "CPU_DTS");
 503 TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
 504 TEMPERATURE_SHOW_TEMP_AND_LABEL(vga,        TEMP_VGA,        "VGA_TEMP");
 505 TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN,       TEMP_SKIN,       "SKIN_TEMP90");
 506
 507
 508 /* Power supply interface */
 509 static int bat_status(void)
 510 {
 511         u8 status0 = ec_read_u8(BAT_STATUS0);
 512         u8 status1 = ec_read_u8(BAT_STATUS1);
 513
 514         if (status0 & BAT_S0_CHARGING)
 515                 return POWER_SUPPLY_STATUS_CHARGING;
 516         if (status0 & BAT_S0_DISCHARGE)
 517                 return POWER_SUPPLY_STATUS_DISCHARGING;
 518         if (status1 & BAT_S1_FULL)
 519                 return POWER_SUPPLY_STATUS_FULL;
 520         return POWER_SUPPLY_STATUS_NOT_CHARGING;
 521 }
 522
 523 static int bat_health(void)
 524 {
 525         u8 status = ec_read_u8(BAT_STOP_CHARGE1);
 526
 527         if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
 528                 return POWER_SUPPLY_HEALTH_OVERHEAT;
 529         if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
 530                 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
 531         if (status & BAT_STOP_CHRG1_BAD_CELL)
 532                 return POWER_SUPPLY_HEALTH_DEAD;
 533         if (status & BAT_STOP_CHRG1_COMM_FAIL)
 534                 return POWER_SUPPLY_HEALTH_UNKNOWN;
 535         return POWER_SUPPLY_HEALTH_GOOD;
 536 }
 537
 538 static int bat_is_present(void)
 539 {
 540         u8 status = ec_read_u8(BAT_STATUS2);
 541         return ((status & BAT_S1_EXISTS) != 0);
 542 }
 543
 544 static int bat_technology(void)
 545 {
 546         u8 status = ec_read_u8(BAT_STATUS1);
 547
 548         if (status & BAT_S1_LiION_OR_NiMH)
 549                 return POWER_SUPPLY_TECHNOLOGY_LION;
 550         return POWER_SUPPLY_TECHNOLOGY_NiMH;
 551 }
 552
 553 static int bat_capacity_level(void)
 554 {
 555         u8 status0 = ec_read_u8(BAT_STATUS0);
 556         u8 status1 = ec_read_u8(BAT_STATUS1);
 557         u8 status2 = ec_read_u8(BAT_STATUS2);
 558
 559         if (status0 & BAT_S0_DISCHRG_CRITICAL
 560                         || status1 & BAT_S1_EMPTY
 561                         || status2 & BAT_S2_LOW_LOW)
 562                 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
 563         if (status0 & BAT_S0_LOW)
 564                 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
 565         if (status1 & BAT_S1_FULL)
 566                 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
 567         return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
 568 }
 569
 570 static int bat_get_property(struct power_supply *psy,
 571                                 enum power_supply_property psp,
 572                                 union power_supply_propval *val)
 573 {
 574         struct compal_data *data;
 575         data = container_of(psy, struct compal_data, psy);
 576
 577         switch (psp) {
 578         case POWER_SUPPLY_PROP_STATUS:
 579                 val->intval = bat_status();
 580                 break;
 581         case POWER_SUPPLY_PROP_HEALTH:
 582                 val->intval = bat_health();
 583                 break;
 584         case POWER_SUPPLY_PROP_PRESENT:
 585                 val->intval = bat_is_present();
 586                 break;
 587         case POWER_SUPPLY_PROP_TECHNOLOGY:
 588                 val->intval = bat_technology();
 589                 break;
 590         case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
 591                 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
 592                 break;
 593         case POWER_SUPPLY_PROP_VOLTAGE_NOW:
 594                 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
 595                 break;
 596         case POWER_SUPPLY_PROP_CURRENT_NOW:
 597                 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
 598                 break;
 599         case POWER_SUPPLY_PROP_CURRENT_AVG:
 600                 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
 601                 break;
 602         case POWER_SUPPLY_PROP_POWER_NOW:
 603                 val->intval = ec_read_u8(BAT_POWER) * 1000000;
 604                 break;
 605         case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
 606                 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
 607                 break;
 608         case POWER_SUPPLY_PROP_CHARGE_NOW:
 609                 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
 610                 break;
 611         case POWER_SUPPLY_PROP_CAPACITY:
 612                 val->intval = ec_read_u8(BAT_CAPACITY);
 613                 break;
 614         case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
 615                 val->intval = bat_capacity_level();
 616                 break;
 617         /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
 618          * the number of degrees, whereas BAT_TEMP is somewhat more
 619          * complicated. It looks like this is a negative nember with a
 620          * 100/256 divider and an offset of 222. Both were determined
 621          * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
 622         case POWER_SUPPLY_PROP_TEMP:
 623                 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
 624                 break;
 625         case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
 626                 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
 627                 break;
 628         /* Neither the model name nor manufacturer name work for me. */
 629         case POWER_SUPPLY_PROP_MODEL_NAME:
 630                 val->strval = data->bat_model_name;
 631                 break;
 632         case POWER_SUPPLY_PROP_MANUFACTURER:
 633                 val->strval = data->bat_manufacturer_name;
 634                 break;
 635         case POWER_SUPPLY_PROP_SERIAL_NUMBER:
 636                 val->strval = data->bat_serial_number;
 637                 break;
 638         default:
 639                 break;
 640         }
 641         return 0;
 642 }
 643
 644
 645
 646
 647
 648 /* ============== */
 649 /* Driver Globals */
 650 /* ============== */
 651 static DEVICE_ATTR(wake_up_pme,
 652                 0644, wake_up_pme_show,         wake_up_pme_store);
 653 static DEVICE_ATTR(wake_up_modem,
 654                 0644, wake_up_modem_show,       wake_up_modem_store);
 655 static DEVICE_ATTR(wake_up_lan,
 656                 0644, wake_up_lan_show, wake_up_lan_store);
 657 static DEVICE_ATTR(wake_up_wlan,
 658                 0644, wake_up_wlan_show,        wake_up_wlan_store);
 659 static DEVICE_ATTR(wake_up_key,
 660                 0644, wake_up_key_show, wake_up_key_store);
 661 static DEVICE_ATTR(wake_up_mouse,
 662                 0644, wake_up_mouse_show,       wake_up_mouse_store);
 663
 664 static SENSOR_DEVICE_ATTR(name,        S_IRUGO, hwmon_name_show,   NULL, 1);
 665 static SENSOR_DEVICE_ATTR(fan1_input,  S_IRUGO, fan_show,          NULL, 1);
 666 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu,          NULL, 1);
 667 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local,    NULL, 1);
 668 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS,      NULL, 1);
 669 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge,  NULL, 1);
 670 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga,          NULL, 1);
 671 static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN,         NULL, 1);
 672 static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu,         NULL, 1);
 673 static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local,   NULL, 1);
 674 static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS,     NULL, 1);
 675 static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL, 1);
 676 static SENSOR_DEVICE_ATTR(temp5_label, S_IRUGO, label_vga,         NULL, 1);
 677 static SENSOR_DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN,        NULL, 1);
 678 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store, 1);
 679 static SENSOR_DEVICE_ATTR(pwm1_enable,
 680                 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store, 0);
 681
 682 static struct attribute *compal_attributes[] = {
 683         &dev_attr_wake_up_pme.attr,
 684         &dev_attr_wake_up_modem.attr,
 685         &dev_attr_wake_up_lan.attr,
 686         &dev_attr_wake_up_wlan.attr,
 687         &dev_attr_wake_up_key.attr,
 688         &dev_attr_wake_up_mouse.attr,
 689         /* Maybe put the sensor-stuff in a separate hwmon-driver? That way,
 690          * the hwmon sysfs won't be cluttered with the above files. */
 691         &sensor_dev_attr_name.dev_attr.attr,
 692         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
 693         &sensor_dev_attr_pwm1.dev_attr.attr,
 694         &sensor_dev_attr_fan1_input.dev_attr.attr,
 695         &sensor_dev_attr_temp1_input.dev_attr.attr,
 696         &sensor_dev_attr_temp2_input.dev_attr.attr,
 697         &sensor_dev_attr_temp3_input.dev_attr.attr,
 698         &sensor_dev_attr_temp4_input.dev_attr.attr,
 699         &sensor_dev_attr_temp5_input.dev_attr.attr,
 700         &sensor_dev_attr_temp6_input.dev_attr.attr,
 701         &sensor_dev_attr_temp1_label.dev_attr.attr,
 702         &sensor_dev_attr_temp2_label.dev_attr.attr,
 703         &sensor_dev_attr_temp3_label.dev_attr.attr,
 704         &sensor_dev_attr_temp4_label.dev_attr.attr,
 705         &sensor_dev_attr_temp5_label.dev_attr.attr,
 706         &sensor_dev_attr_temp6_label.dev_attr.attr,
 707         NULL
 708 };
 709
 710 static struct attribute_group compal_attribute_group = {
 711         .attrs = compal_attributes
 712 };
 713
 714 static int __devinit compal_probe(struct platform_device *);
 715 static int __devexit compal_remove(struct platform_device *);
 716 static struct platform_driver compal_driver = {
 717         .driver = {
 718                 .name = DRIVER_NAME,
 719                 .owner = THIS_MODULE,
 720         },
 721         .probe  = compal_probe,
 722         .remove = __devexit_p(compal_remove)
 723 };
 724
 725 static enum power_supply_property compal_bat_properties[] = {
 726         POWER_SUPPLY_PROP_STATUS,
 727         POWER_SUPPLY_PROP_HEALTH,
 728         POWER_SUPPLY_PROP_PRESENT,
 729         POWER_SUPPLY_PROP_TECHNOLOGY,
 730         POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
 731         POWER_SUPPLY_PROP_VOLTAGE_NOW,
 732         POWER_SUPPLY_PROP_CURRENT_NOW,
 733         POWER_SUPPLY_PROP_CURRENT_AVG,
 734         POWER_SUPPLY_PROP_POWER_NOW,
 735         POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
 736         POWER_SUPPLY_PROP_CHARGE_NOW,
 737         POWER_SUPPLY_PROP_CAPACITY,
 738         POWER_SUPPLY_PROP_CAPACITY_LEVEL,
 739         POWER_SUPPLY_PROP_TEMP,
 740         POWER_SUPPLY_PROP_TEMP_AMBIENT,
 741         POWER_SUPPLY_PROP_MODEL_NAME,
 742         POWER_SUPPLY_PROP_MANUFACTURER,
 743         POWER_SUPPLY_PROP_SERIAL_NUMBER,
 744 };
 745
 746 static struct backlight_device *compalbl_device;
 747
 748 static struct platform_device *compal_device;
 749
 750 static struct rfkill *wifi_rfkill;
 751 static struct rfkill *bt_rfkill;
 752
 753
 754
 755
 756
 757 /* =================================== */
 758 /* Initialization & clean-up functions */
 759 /* =================================== */
 760
 761 static int dmi_check_cb(const struct dmi_system_id *id)
 762 {
 763         printk(KERN_INFO DRIVER_NAME": Identified laptop model '%s'\n",
 764                 id->ident);
 765         extra_features = false;
 766         return 0;
 767 }
 768
 769 static int dmi_check_cb_extra(const struct dmi_system_id *id)
 770 {
 771         printk(KERN_INFO DRIVER_NAME": Identified laptop model '%s', "
 772                 "enabling extra features\n",
 773                 id->ident);
 774         extra_features = true;
 775         return 0;
 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 Inspiron 11z",
 845                 .matches = {
 846                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 847                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
 848                 },
 849                 .callback = dmi_check_cb
 850         },
 851         {
 852                 .ident = "Dell Mini 12",
 853                 .matches = {
 854                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 855                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
 856                 },
 857                 .callback = dmi_check_cb
 858         },
 859         {
 860                 .ident = "JHL90",
 861                 .matches = {
 862                         DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
 863                         DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
 864                 },
 865                 .callback = dmi_check_cb_extra
 866         },
 867         { }
 868 };
 869
 870 static void initialize_power_supply_data(struct compal_data *data)
 871 {
 872         data->psy.name = DRIVER_NAME;
 873         data->psy.type = POWER_SUPPLY_TYPE_BATTERY;
 874         data->psy.properties = compal_bat_properties;
 875         data->psy.num_properties = ARRAY_SIZE(compal_bat_properties);
 876         data->psy.get_property = bat_get_property;
 877
 878         ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
 879                                         data->bat_manufacturer_name,
 880                                         BAT_MANUFACTURER_NAME_LEN);
 881         data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
 882
 883         ec_read_sequence(BAT_MODEL_NAME_ADDR,
 884                                         data->bat_model_name,
 885                                         BAT_MODEL_NAME_LEN);
 886         data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
 887
 888         scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
 889                                 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
 890 }
 891
 892 static void initialize_fan_control_data(struct compal_data *data)
 893 {
 894         data->pwm_enable = 2; /* Keep motherboard in control for now */
 895         data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
 896                                  if we take over... */
 897 }
 898
 899 static int setup_rfkill(void)
 900 {
 901         int ret;
 902
 903         wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
 904                                 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
 905                                 (void *) WIRELESS_WLAN);
 906         if (!wifi_rfkill)
 907                 return -ENOMEM;
 908
 909         ret = rfkill_register(wifi_rfkill);
 910         if (ret)
 911                 goto err_wifi;
 912
 913         bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
 914                                 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
 915                                 (void *) WIRELESS_BT);
 916         if (!bt_rfkill) {
 917                 ret = -ENOMEM;
 918                 goto err_allocate_bt;
 919         }
 920         ret = rfkill_register(bt_rfkill);
 921         if (ret)
 922                 goto err_register_bt;
 923
 924         return 0;
 925
 926 err_register_bt:
 927         rfkill_destroy(bt_rfkill);
 928
 929 err_allocate_bt:
 930         rfkill_unregister(wifi_rfkill);
 931
 932 err_wifi:
 933         rfkill_destroy(wifi_rfkill);
 934
 935         return ret;
 936 }
 937
 938 static int __init compal_init(void)
 939 {
 940         int ret;
 941
 942         if (acpi_disabled) {
 943                 printk(KERN_ERR DRIVER_NAME": ACPI needs to be enabled for "
 944                                                 "this driver to work!\n");
 945                 return -ENODEV;
 946         }
 947
 948         if (!force && !dmi_check_system(compal_dmi_table)) {
 949                 printk(KERN_ERR DRIVER_NAME": Motherboard not recognized (You "
 950                                 "could try the module's force-parameter)");
 951                 return -ENODEV;
 952         }
 953
 954         if (!acpi_video_backlight_support()) {
 955                 struct backlight_properties props;
 956                 memset(&props, 0, sizeof(struct backlight_properties));
 957                 props.max_brightness = BACKLIGHT_LEVEL_MAX;
 958                 compalbl_device = backlight_device_register(DRIVER_NAME,
 959                                                             NULL, NULL,
 960                                                             &compalbl_ops,
 961                                                             &props);
 962                 if (IS_ERR(compalbl_device))
 963                         return PTR_ERR(compalbl_device);
 964         }
 965
 966         ret = platform_driver_register(&compal_driver);
 967         if (ret)
 968                 goto err_backlight;
 969
 970         compal_device = platform_device_alloc(DRIVER_NAME, -1);
 971         if (!compal_device) {
 972                 ret = -ENOMEM;
 973                 goto err_platform_driver;
 974         }
 975
 976         ret = platform_device_add(compal_device); /* This calls compal_probe */
 977         if (ret)
 978                 goto err_platform_device;
 979
 980         ret = setup_rfkill();
 981         if (ret)
 982                 goto err_rfkill;
 983
 984         printk(KERN_INFO DRIVER_NAME": Driver "DRIVER_VERSION
 985                                                 " successfully loaded\n");
 986         return 0;
 987
 988 err_rfkill:
 989         platform_device_del(compal_device);
 990
 991 err_platform_device:
 992         platform_device_put(compal_device);
 993
 994 err_platform_driver:
 995         platform_driver_unregister(&compal_driver);
 996
 997 err_backlight:
 998         backlight_device_unregister(compalbl_device);
 999
1000         return ret;
1001 }
1002
1003 static int __devinit compal_probe(struct platform_device *pdev)
1004 {
1005         int err;
1006         struct compal_data *data;
1007
1008         if (!extra_features)
1009                 return 0;
1010
1011         /* Fan control */
1012         data = kzalloc(sizeof(struct compal_data), GFP_KERNEL);
1013         if (!data)
1014                 return -ENOMEM;
1015
1016         initialize_fan_control_data(data);
1017
1018         err = sysfs_create_group(&pdev->dev.kobj, &compal_attribute_group);
1019         if (err)
1020                 return err;
1021
1022         data->hwmon_dev = hwmon_device_register(&pdev->dev);
1023         if (IS_ERR(data->hwmon_dev)) {
1024                 err = PTR_ERR(data->hwmon_dev);
1025                 sysfs_remove_group(&pdev->dev.kobj,
1026                                 &compal_attribute_group);
1027                 kfree(data);
1028                 return err;
1029         }
1030
1031         /* Power supply */
1032         initialize_power_supply_data(data);
1033         power_supply_register(&compal_device->dev, &data->psy);
1034
1035         platform_set_drvdata(pdev, data);
1036
1037         return 0;
1038 }
1039
1040 static void __exit compal_cleanup(void)
1041 {
1042         platform_device_unregister(compal_device);
1043         platform_driver_unregister(&compal_driver);
1044         backlight_device_unregister(compalbl_device);
1045         rfkill_unregister(wifi_rfkill);
1046         rfkill_unregister(bt_rfkill);
1047         rfkill_destroy(wifi_rfkill);
1048         rfkill_destroy(bt_rfkill);
1049
1050         printk(KERN_INFO DRIVER_NAME": Driver unloaded\n");
1051 }
1052
1053 static int __devexit compal_remove(struct platform_device *pdev)
1054 {
1055         struct compal_data *data;
1056
1057         if (!extra_features)
1058                 return 0;
1059
1060         printk(KERN_INFO DRIVER_NAME": Unloading: resetting fan control "
1061                                                         "to motherboard\n");
1062         pwm_disable_control();
1063
1064         data = platform_get_drvdata(pdev);
1065         hwmon_device_unregister(data->hwmon_dev);
1066         power_supply_unregister(&data->psy);
1067
1068         platform_set_drvdata(pdev, NULL);
1069         kfree(data);
1070
1071         sysfs_remove_group(&pdev->dev.kobj, &compal_attribute_group);
1072
1073         return 0;
1074 }
1075
1076
1077 module_init(compal_init);
1078 module_exit(compal_cleanup);
1079
1080 MODULE_AUTHOR("Cezary Jackiewicz");
1081 MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1082 MODULE_DESCRIPTION("Compal Laptop Support");
1083 MODULE_VERSION(DRIVER_VERSION);
1084 MODULE_LICENSE("GPL");
1085
1086 MODULE_ALIAS("dmi:*:rnIFL90:rvrIFT00:*");
1087 MODULE_ALIAS("dmi:*:rnIFL90:rvrREFERENCE:*");
1088 MODULE_ALIAS("dmi:*:rnIFL91:rvrIFT00:*");
1089 MODULE_ALIAS("dmi:*:rnJFL92:rvrIFT00:*");
1090 MODULE_ALIAS("dmi:*:rnIFT00:rvrIFT00:*");
1091 MODULE_ALIAS("dmi:*:rnJHL90:rvrREFERENCE:*");
1092 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron910:*");
1093 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1010:*");
1094 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1011:*");
1095 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1110:*");
1096 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1210:*");