drivers/misc/thinkpad_acpi.h

   1 /*
   2  *  thinkpad_acpi.h - ThinkPad ACPI Extras
   3  *
   4  *
   5  *  Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
   6  *  Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21  *  02110-1301, USA.
  22  */
  23
  24 #ifndef __THINKPAD_ACPI_H__
  25 #define __THINKPAD_ACPI_H__
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/types.h>
  31 #include <linux/string.h>
  32 #include <linux/list.h>
  33 #include <linux/mutex.h>
  34 #include <linux/kthread.h>
  35 #include <linux/freezer.h>
  36 #include <linux/delay.h>
  37
  38 #include <linux/nvram.h>
  39 #include <linux/proc_fs.h>
  40 #include <linux/sysfs.h>
  41 #include <linux/backlight.h>
  42 #include <linux/fb.h>
  43 #include <linux/platform_device.h>
  44 #include <linux/hwmon.h>
  45 #include <linux/hwmon-sysfs.h>
  46 #include <linux/input.h>
  47 #include <asm/uaccess.h>
  48
  49 #include <linux/dmi.h>
  50 #include <linux/jiffies.h>
  51 #include <linux/workqueue.h>
  52
  53 #include <acpi/acpi_drivers.h>
  54 #include <acpi/acnamesp.h>
  55
  56 #include <linux/pci_ids.h>
  57
  58 /****************************************************************************
  59  * Main driver
  60  */
  61
  62 #define IBM_NAME "thinkpad"
  63 #define IBM_DESC "ThinkPad ACPI Extras"
  64 #define IBM_FILE "thinkpad_acpi"
  65 #define IBM_URL "http://ibm-acpi.sf.net/"
  66 #define IBM_MAIL "ibm-acpi-devel@lists.sourceforge.net"
  67
  68 #define IBM_PROC_DIR "ibm"
  69 #define IBM_ACPI_EVENT_PREFIX "ibm"
  70 #define IBM_DRVR_NAME IBM_FILE
  71
  72 #define IBM_LOG IBM_FILE ": "
  73 #define IBM_ERR    KERN_ERR    IBM_LOG
  74 #define IBM_NOTICE KERN_NOTICE IBM_LOG
  75 #define IBM_INFO   KERN_INFO   IBM_LOG
  76 #define IBM_DEBUG  KERN_DEBUG  IBM_LOG
  77
  78 #define IBM_MAX_ACPI_ARGS 3
  79
  80 /* ThinkPad CMOS commands */
  81 #define TP_CMOS_VOLUME_DOWN     0
  82 #define TP_CMOS_VOLUME_UP       1
  83 #define TP_CMOS_VOLUME_MUTE     2
  84 #define TP_CMOS_BRIGHTNESS_UP   4
  85 #define TP_CMOS_BRIGHTNESS_DOWN 5
  86
  87 /* NVRAM Addresses */
  88 enum tp_nvram_addr {
  89         TP_NVRAM_ADDR_HK2               = 0x57,
  90         TP_NVRAM_ADDR_THINKLIGHT        = 0x58,
  91         TP_NVRAM_ADDR_VIDEO             = 0x59,
  92         TP_NVRAM_ADDR_BRIGHTNESS        = 0x5e,
  93         TP_NVRAM_ADDR_MIXER             = 0x60,
  94 };
  95
  96 /* NVRAM bit masks */
  97 enum {
  98         TP_NVRAM_MASK_HKT_THINKPAD      = 0x08,
  99         TP_NVRAM_MASK_HKT_ZOOM          = 0x20,
 100         TP_NVRAM_MASK_HKT_DISPLAY       = 0x40,
 101         TP_NVRAM_MASK_HKT_HIBERNATE     = 0x80,
 102         TP_NVRAM_MASK_THINKLIGHT        = 0x10,
 103         TP_NVRAM_MASK_HKT_DISPEXPND     = 0x30,
 104         TP_NVRAM_MASK_HKT_BRIGHTNESS    = 0x20,
 105         TP_NVRAM_MASK_LEVEL_BRIGHTNESS  = 0x07,
 106         TP_NVRAM_POS_LEVEL_BRIGHTNESS   = 0,
 107         TP_NVRAM_MASK_MUTE              = 0x40,
 108         TP_NVRAM_MASK_HKT_VOLUME        = 0x80,
 109         TP_NVRAM_MASK_LEVEL_VOLUME      = 0x0f,
 110         TP_NVRAM_POS_LEVEL_VOLUME       = 0,
 111 };
 112
 113 #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
 114 #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
 115 #define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
 116
 117 /* Debugging */
 118 #define TPACPI_DBG_ALL          0xffff
 119 #define TPACPI_DBG_ALL          0xffff
 120 #define TPACPI_DBG_INIT         0x0001
 121 #define TPACPI_DBG_EXIT         0x0002
 122 #define dbg_printk(a_dbg_level, format, arg...) \
 123         do { if (dbg_level & a_dbg_level) \
 124                 printk(IBM_DEBUG "%s: " format, __func__ , ## arg); } while (0)
 125 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
 126 #define vdbg_printk(a_dbg_level, format, arg...) \
 127         dbg_printk(a_dbg_level, format, ## arg)
 128 static const char *str_supported(int is_supported);
 129 #else
 130 #define vdbg_printk(a_dbg_level, format, arg...)
 131 #endif
 132
 133 /* Input IDs */
 134 #define TPACPI_HKEY_INPUT_VENDOR        PCI_VENDOR_ID_IBM
 135 #define TPACPI_HKEY_INPUT_PRODUCT       0x5054 /* "TP" */
 136 #define TPACPI_HKEY_INPUT_VERSION       0x4101
 137
 138 /* ACPI HIDs */
 139 #define IBM_HKEY_HID    "IBM0068"
 140
 141 /* ACPI helpers */
 142 static int __must_check acpi_evalf(acpi_handle handle,
 143                       void *res, char *method, char *fmt, ...);
 144 static int __must_check acpi_ec_read(int i, u8 * p);
 145 static int __must_check acpi_ec_write(int i, u8 v);
 146 static int __must_check _sta(acpi_handle handle);
 147
 148 /* ACPI handles */
 149 static acpi_handle root_handle;                 /* root namespace */
 150 static acpi_handle ec_handle;                   /* EC */
 151 static acpi_handle ecrd_handle, ecwr_handle;    /* 570 EC access */
 152 static acpi_handle cmos_handle, hkey_handle;    /* basic thinkpad handles */
 153
 154 static void drv_acpi_handle_init(char *name,
 155                    acpi_handle *handle, acpi_handle parent,
 156                    char **paths, int num_paths, char **path);
 157 #define IBM_ACPIHANDLE_INIT(object)                                             \
 158         drv_acpi_handle_init(#object, &object##_handle, *object##_parent,       \
 159                 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
 160
 161 /* ThinkPad ACPI helpers */
 162 static int issue_thinkpad_cmos_command(int cmos_cmd);
 163
 164 /* procfs support */
 165 static struct proc_dir_entry *proc_dir;
 166
 167 /* procfs helpers */
 168 static int dispatch_procfs_read(char *page, char **start, off_t off,
 169                 int count, int *eof, void *data);
 170 static int dispatch_procfs_write(struct file *file,
 171                 const char __user * userbuf,
 172                 unsigned long count, void *data);
 173 static char *next_cmd(char **cmds);
 174
 175 /* sysfs support */
 176 struct attribute_set {
 177         unsigned int members, max_members;
 178         struct attribute_group group;
 179 };
 180
 181 static struct attribute_set *create_attr_set(unsigned int max_members,
 182                                                 const char* name);
 183 #define destroy_attr_set(_set) \
 184         kfree(_set);
 185 static int add_to_attr_set(struct attribute_set* s, struct attribute *attr);
 186 static int add_many_to_attr_set(struct attribute_set* s,
 187                         struct attribute **attr,
 188                         unsigned int count);
 189 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
 190         sysfs_create_group(_kobj, &_attr_set->group)
 191 static void delete_attr_set(struct attribute_set* s, struct kobject *kobj);
 192
 193 static int parse_strtoul(const char *buf, unsigned long max,
 194                         unsigned long *value);
 195
 196 /* Device model */
 197 static struct platform_device *tpacpi_pdev;
 198 static struct class_device *tpacpi_hwmon;
 199 static struct platform_driver tpacpi_pdriver;
 200 static struct input_dev *tpacpi_inputdev;
 201 static int tpacpi_create_driver_attributes(struct device_driver *drv);
 202 static void tpacpi_remove_driver_attributes(struct device_driver *drv);
 203
 204 /* Module */
 205 static int experimental;
 206 static u32 dbg_level;
 207 static int force_load;
 208 static unsigned int hotkey_report_mode;
 209
 210 static int thinkpad_acpi_module_init(void);
 211 static void thinkpad_acpi_module_exit(void);
 212
 213
 214 /****************************************************************************
 215  * Subdrivers
 216  */
 217
 218 struct ibm_struct;
 219
 220 struct tp_acpi_drv_struct {
 221         const struct acpi_device_id *hid;
 222         struct acpi_driver *driver;
 223
 224         void (*notify) (struct ibm_struct *, u32);
 225         acpi_handle *handle;
 226         u32 type;
 227         struct acpi_device *device;
 228 };
 229
 230 struct ibm_struct {
 231         char *name;
 232
 233         int (*read) (char *);
 234         int (*write) (char *);
 235         void (*exit) (void);
 236         void (*resume) (void);
 237
 238         struct list_head all_drivers;
 239
 240         struct tp_acpi_drv_struct *acpi;
 241
 242         struct {
 243                 u8 acpi_driver_registered:1;
 244                 u8 acpi_notify_installed:1;
 245                 u8 proc_created:1;
 246                 u8 init_called:1;
 247                 u8 experimental:1;
 248         } flags;
 249 };
 250
 251 struct ibm_init_struct {
 252         char param[32];
 253
 254         int (*init) (struct ibm_init_struct *);
 255         struct ibm_struct *data;
 256 };
 257
 258 static struct {
 259 #ifdef CONFIG_THINKPAD_ACPI_BAY
 260         u32 bay_status:1;
 261         u32 bay_eject:1;
 262         u32 bay_status2:1;
 263         u32 bay_eject2:1;
 264 #endif
 265         u32 bluetooth:1;
 266         u32 hotkey:1;
 267         u32 hotkey_mask:1;
 268         u32 hotkey_wlsw:1;
 269         u32 light:1;
 270         u32 light_status:1;
 271         u32 wan:1;
 272         u32 fan_ctrl_status_undef:1;
 273         u32 input_device_registered:1;
 274         u32 platform_drv_registered:1;
 275         u32 platform_drv_attrs_registered:1;
 276         u32 hotkey_poll_active:1;
 277 } tp_features;
 278
 279 struct thinkpad_id_data {
 280         unsigned int vendor;    /* ThinkPad vendor:
 281                                  * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
 282
 283         char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
 284         char *ec_version_str;   /* Something like 1ZHT51WW-1.04a */
 285
 286         u16 bios_model;         /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
 287         u16 ec_model;
 288
 289         char *model_str;
 290 };
 291
 292 static struct thinkpad_id_data thinkpad_id;
 293
 294 static struct list_head tpacpi_all_drivers;
 295
 296 static struct ibm_init_struct ibms_init[];
 297 static int set_ibm_param(const char *val, struct kernel_param *kp);
 298 static int ibm_init(struct ibm_init_struct *iibm);
 299 static void ibm_exit(struct ibm_struct *ibm);
 300
 301
 302 /*
 303  * procfs master subdriver
 304  */
 305 static int thinkpad_acpi_driver_init(struct ibm_init_struct *iibm);
 306 static int thinkpad_acpi_driver_read(char *p);
 307
 308
 309 /*
 310  * Bay subdriver
 311  */
 312
 313 #ifdef CONFIG_THINKPAD_ACPI_BAY
 314 static acpi_handle bay_handle, bay_ej_handle;
 315 static acpi_handle bay2_handle, bay2_ej_handle;
 316
 317 static int bay_init(struct ibm_init_struct *iibm);
 318 static void bay_notify(struct ibm_struct *ibm, u32 event);
 319 static int bay_read(char *p);
 320 static int bay_write(char *buf);
 321 #endif /* CONFIG_THINKPAD_ACPI_BAY */
 322
 323
 324 /*
 325  * Beep subdriver
 326  */
 327
 328 static acpi_handle beep_handle;
 329
 330 static int beep_read(char *p);
 331 static int beep_write(char *buf);
 332
 333
 334 /*
 335  * Bluetooth subdriver
 336  */
 337
 338 enum {
 339         /* ACPI GBDC/SBDC bits */
 340         TP_ACPI_BLUETOOTH_HWPRESENT     = 0x01, /* Bluetooth hw available */
 341         TP_ACPI_BLUETOOTH_RADIOSSW      = 0x02, /* Bluetooth radio enabled */
 342         TP_ACPI_BLUETOOTH_UNK           = 0x04, /* unknown function */
 343 };
 344
 345 static int bluetooth_init(struct ibm_init_struct *iibm);
 346 static int bluetooth_get_radiosw(void);
 347 static int bluetooth_set_radiosw(int radio_on);
 348 static int bluetooth_read(char *p);
 349 static int bluetooth_write(char *buf);
 350
 351
 352 /*
 353  * Brightness (backlight) subdriver
 354  */
 355
 356 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
 357
 358 static struct backlight_device *ibm_backlight_device;
 359 static int brightness_offset = 0x31;
 360 static int brightness_mode;
 361
 362 static int brightness_init(struct ibm_init_struct *iibm);
 363 static void brightness_exit(void);
 364 static int brightness_get(struct backlight_device *bd);
 365 static int brightness_set(int value);
 366 static int brightness_update_status(struct backlight_device *bd);
 367 static int brightness_read(char *p);
 368 static int brightness_write(char *buf);
 369
 370
 371 /*
 372  * CMOS subdriver
 373  */
 374
 375 static int cmos_read(char *p);
 376 static int cmos_write(char *buf);
 377
 378
 379 /*
 380  * Dock subdriver
 381  */
 382
 383 #ifdef CONFIG_THINKPAD_ACPI_DOCK
 384 static acpi_handle pci_handle;
 385 static acpi_handle dock_handle;
 386
 387 static void dock_notify(struct ibm_struct *ibm, u32 event);
 388 static int dock_read(char *p);
 389 static int dock_write(char *buf);
 390 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
 391
 392
 393 /*
 394  * EC dump subdriver
 395  */
 396
 397 static int ecdump_read(char *p) ;
 398 static int ecdump_write(char *buf);
 399
 400
 401 /*
 402  * Fan subdriver
 403  */
 404
 405 enum {                                  /* Fan control constants */
 406         fan_status_offset = 0x2f,       /* EC register 0x2f */
 407         fan_rpm_offset = 0x84,          /* EC register 0x84: LSB, 0x85 MSB (RPM)
 408                                          * 0x84 must be read before 0x85 */
 409
 410         TP_EC_FAN_FULLSPEED = 0x40,     /* EC fan mode: full speed */
 411         TP_EC_FAN_AUTO      = 0x80,     /* EC fan mode: auto fan control */
 412
 413         TPACPI_FAN_LAST_LEVEL = 0x100,  /* Use cached last-seen fan level */
 414 };
 415
 416 enum fan_status_access_mode {
 417         TPACPI_FAN_NONE = 0,            /* No fan status or control */
 418         TPACPI_FAN_RD_ACPI_GFAN,        /* Use ACPI GFAN */
 419         TPACPI_FAN_RD_TPEC,             /* Use ACPI EC regs 0x2f, 0x84-0x85 */
 420 };
 421
 422 enum fan_control_access_mode {
 423         TPACPI_FAN_WR_NONE = 0,         /* No fan control */
 424         TPACPI_FAN_WR_ACPI_SFAN,        /* Use ACPI SFAN */
 425         TPACPI_FAN_WR_TPEC,             /* Use ACPI EC reg 0x2f */
 426         TPACPI_FAN_WR_ACPI_FANS,        /* Use ACPI FANS and EC reg 0x2f */
 427 };
 428
 429 enum fan_control_commands {
 430         TPACPI_FAN_CMD_SPEED    = 0x0001,       /* speed command */
 431         TPACPI_FAN_CMD_LEVEL    = 0x0002,       /* level command  */
 432         TPACPI_FAN_CMD_ENABLE   = 0x0004,       /* enable/disable cmd,
 433                                                  * and also watchdog cmd */
 434 };
 435
 436 static int fan_control_allowed;
 437
 438 static enum fan_status_access_mode fan_status_access_mode;
 439 static enum fan_control_access_mode fan_control_access_mode;
 440 static enum fan_control_commands fan_control_commands;
 441 static u8 fan_control_initial_status;
 442 static u8 fan_control_desired_level;
 443 static int fan_watchdog_maxinterval;
 444
 445 static struct mutex fan_mutex;
 446
 447 static acpi_handle fans_handle, gfan_handle, sfan_handle;
 448
 449 static int fan_init(struct ibm_init_struct *iibm);
 450 static void fan_exit(void);
 451 static int fan_get_status(u8 *status);
 452 static int fan_get_status_safe(u8 *status);
 453 static int fan_get_speed(unsigned int *speed);
 454 static void fan_update_desired_level(u8 status);
 455 static void fan_watchdog_fire(struct work_struct *ignored);
 456 static void fan_watchdog_reset(void);
 457 static int fan_set_level(int level);
 458 static int fan_set_level_safe(int level);
 459 static int fan_set_enable(void);
 460 static int fan_set_disable(void);
 461 static int fan_set_speed(int speed);
 462 static int fan_read(char *p);
 463 static int fan_write(char *buf);
 464 static int fan_write_cmd_level(const char *cmd, int *rc);
 465 static int fan_write_cmd_enable(const char *cmd, int *rc);
 466 static int fan_write_cmd_disable(const char *cmd, int *rc);
 467 static int fan_write_cmd_speed(const char *cmd, int *rc);
 468 static int fan_write_cmd_watchdog(const char *cmd, int *rc);
 469
 470
 471 /*
 472  * Hotkey subdriver
 473  */
 474
 475 enum {  /* hot key scan codes (derived from ACPI DSDT) */
 476         TP_ACPI_HOTKEYSCAN_FNF1         = 0,
 477         TP_ACPI_HOTKEYSCAN_FNF2,
 478         TP_ACPI_HOTKEYSCAN_FNF3,
 479         TP_ACPI_HOTKEYSCAN_FNF4,
 480         TP_ACPI_HOTKEYSCAN_FNF5,
 481         TP_ACPI_HOTKEYSCAN_FNF6,
 482         TP_ACPI_HOTKEYSCAN_FNF7,
 483         TP_ACPI_HOTKEYSCAN_FNF8,
 484         TP_ACPI_HOTKEYSCAN_FNF9,
 485         TP_ACPI_HOTKEYSCAN_FNF10,
 486         TP_ACPI_HOTKEYSCAN_FNF11,
 487         TP_ACPI_HOTKEYSCAN_FNF12,
 488         TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
 489         TP_ACPI_HOTKEYSCAN_FNINSERT,
 490         TP_ACPI_HOTKEYSCAN_FNDELETE,
 491         TP_ACPI_HOTKEYSCAN_FNHOME,
 492         TP_ACPI_HOTKEYSCAN_FNEND,
 493         TP_ACPI_HOTKEYSCAN_FNPAGEUP,
 494         TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
 495         TP_ACPI_HOTKEYSCAN_FNSPACE,
 496         TP_ACPI_HOTKEYSCAN_VOLUMEUP,
 497         TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
 498         TP_ACPI_HOTKEYSCAN_MUTE,
 499         TP_ACPI_HOTKEYSCAN_THINKPAD,
 500 };
 501
 502 static int hotkey_orig_status;
 503 static u32 hotkey_orig_mask;
 504
 505 static struct mutex hotkey_mutex;
 506
 507 static int hotkey_init(struct ibm_init_struct *iibm);
 508 static void hotkey_exit(void);
 509 static int hotkey_get(int *status, u32 *mask);
 510 static int hotkey_set(int status, u32 mask);
 511 static void hotkey_notify(struct ibm_struct *ibm, u32 event);
 512 static int hotkey_read(char *p);
 513 static int hotkey_write(char *buf);
 514
 515
 516 /*
 517  * LED subdriver
 518  */
 519
 520 enum led_access_mode {
 521         TPACPI_LED_NONE = 0,
 522         TPACPI_LED_570, /* 570 */
 523         TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
 524         TPACPI_LED_NEW, /* all others */
 525 };
 526
 527 enum {  /* For TPACPI_LED_OLD */
 528         TPACPI_LED_EC_HLCL = 0x0c,      /* EC reg to get led to power on */
 529         TPACPI_LED_EC_HLBL = 0x0d,      /* EC reg to blink a lit led */
 530         TPACPI_LED_EC_HLMS = 0x0e,      /* EC reg to select led to command */
 531 };
 532
 533 static enum led_access_mode led_supported;
 534 static acpi_handle led_handle;
 535
 536 static int led_init(struct ibm_init_struct *iibm);
 537 static int led_read(char *p);
 538 static int led_write(char *buf);
 539
 540 /*
 541  * Light (thinklight) subdriver
 542  */
 543
 544 static acpi_handle lght_handle, ledb_handle;
 545
 546 static int light_init(struct ibm_init_struct *iibm);
 547 static int light_read(char *p);
 548 static int light_write(char *buf);
 549
 550
 551 /*
 552  * Thermal subdriver
 553  */
 554
 555 enum thermal_access_mode {
 556         TPACPI_THERMAL_NONE = 0,        /* No thermal support */
 557         TPACPI_THERMAL_ACPI_TMP07,      /* Use ACPI TMP0-7 */
 558         TPACPI_THERMAL_ACPI_UPDT,       /* Use ACPI TMP0-7 with UPDT */
 559         TPACPI_THERMAL_TPEC_8,          /* Use ACPI EC regs, 8 sensors */
 560         TPACPI_THERMAL_TPEC_16,         /* Use ACPI EC regs, 16 sensors */
 561 };
 562
 563 enum { /* TPACPI_THERMAL_TPEC_* */
 564         TP_EC_THERMAL_TMP0 = 0x78,      /* ACPI EC regs TMP 0..7 */
 565         TP_EC_THERMAL_TMP8 = 0xC0,      /* ACPI EC regs TMP 8..15 */
 566         TP_EC_THERMAL_TMP_NA = -128,    /* ACPI EC sensor not available */
 567 };
 568
 569 #define TPACPI_MAX_THERMAL_SENSORS 16   /* Max thermal sensors supported */
 570 struct ibm_thermal_sensors_struct {
 571         s32 temp[TPACPI_MAX_THERMAL_SENSORS];
 572 };
 573
 574 static enum thermal_access_mode thermal_read_mode;
 575
 576 static int thermal_init(struct ibm_init_struct *iibm);
 577 static int thermal_get_sensor(int idx, s32 *value);
 578 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s);
 579 static int thermal_read(char *p);
 580
 581
 582 /*
 583  * Video subdriver
 584  */
 585
 586 enum video_access_mode {
 587         TPACPI_VIDEO_NONE = 0,
 588         TPACPI_VIDEO_570,       /* 570 */
 589         TPACPI_VIDEO_770,       /* 600e/x, 770e, 770x */
 590         TPACPI_VIDEO_NEW,       /* all others */
 591 };
 592
 593 enum {  /* video status flags, based on VIDEO_570 */
 594         TP_ACPI_VIDEO_S_LCD = 0x01,     /* LCD output enabled */
 595         TP_ACPI_VIDEO_S_CRT = 0x02,     /* CRT output enabled */
 596         TP_ACPI_VIDEO_S_DVI = 0x08,     /* DVI output enabled */
 597 };
 598
 599 enum {  /* TPACPI_VIDEO_570 constants */
 600         TP_ACPI_VIDEO_570_PHSCMD = 0x87,        /* unknown magic constant :( */
 601         TP_ACPI_VIDEO_570_PHSMASK = 0x03,       /* PHS bits that map to
 602                                                  * video_status_flags */
 603         TP_ACPI_VIDEO_570_PHS2CMD = 0x8b,       /* unknown magic constant :( */
 604         TP_ACPI_VIDEO_570_PHS2SET = 0x80,       /* unknown magic constant :( */
 605 };
 606
 607 static enum video_access_mode video_supported;
 608 static int video_orig_autosw;
 609 static acpi_handle vid_handle, vid2_handle;
 610
 611 static int video_init(struct ibm_init_struct *iibm);
 612 static void video_exit(void);
 613 static int video_outputsw_get(void);
 614 static int video_outputsw_set(int status);
 615 static int video_autosw_get(void);
 616 static int video_autosw_set(int enable);
 617 static int video_outputsw_cycle(void);
 618 static int video_expand_toggle(void);
 619 static int video_read(char *p);
 620 static int video_write(char *buf);
 621
 622
 623 /*
 624  * Volume subdriver
 625  */
 626
 627 static int volume_offset = 0x30;
 628
 629 static int volume_read(char *p);
 630 static int volume_write(char *buf);
 631
 632
 633 /*
 634  * Wan subdriver
 635  */
 636
 637 enum {
 638         /* ACPI GWAN/SWAN bits */
 639         TP_ACPI_WANCARD_HWPRESENT       = 0x01, /* Wan hw available */
 640         TP_ACPI_WANCARD_RADIOSSW        = 0x02, /* Wan radio enabled */
 641         TP_ACPI_WANCARD_UNK             = 0x04, /* unknown function */
 642 };
 643
 644 static int wan_init(struct ibm_init_struct *iibm);
 645 static int wan_get_radiosw(void);
 646 static int wan_set_radiosw(int radio_on);
 647 static int wan_read(char *p);
 648 static int wan_write(char *buf);
 649
 650
 651 #endif /* __THINKPAD_ACPI_H */