2 * thinkpad_acpi.h - ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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.
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.
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
24 #ifndef __THINKPAD_ACPI_H__
25 #define __THINKPAD_ACPI_H__
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>
35 #include <linux/nvram.h>
36 #include <linux/proc_fs.h>
37 #include <linux/sysfs.h>
38 #include <linux/backlight.h>
40 #include <linux/platform_device.h>
41 #include <linux/hwmon.h>
42 #include <linux/hwmon-sysfs.h>
43 #include <linux/input.h>
44 #include <asm/uaccess.h>
46 #include <linux/dmi.h>
47 #include <linux/jiffies.h>
48 #include <linux/workqueue.h>
50 #include <acpi/acpi_drivers.h>
51 #include <acpi/acnamesp.h>
53 #include <linux/pci_ids.h>
55 /****************************************************************************
59 #define IBM_NAME "thinkpad"
60 #define IBM_DESC "ThinkPad ACPI Extras"
61 #define IBM_FILE "thinkpad_acpi"
62 #define IBM_URL "http://ibm-acpi.sf.net/"
63 #define IBM_MAIL "ibm-acpi-devel@lists.sourceforge.net"
65 #define IBM_PROC_DIR "ibm"
66 #define IBM_ACPI_EVENT_PREFIX "ibm"
67 #define IBM_DRVR_NAME IBM_FILE
69 #define IBM_LOG IBM_FILE ": "
70 #define IBM_ERR KERN_ERR IBM_LOG
71 #define IBM_NOTICE KERN_NOTICE IBM_LOG
72 #define IBM_INFO KERN_INFO IBM_LOG
73 #define IBM_DEBUG KERN_DEBUG IBM_LOG
75 #define IBM_MAX_ACPI_ARGS 3
77 /* ThinkPad CMOS commands */
78 #define TP_CMOS_VOLUME_DOWN 0
79 #define TP_CMOS_VOLUME_UP 1
80 #define TP_CMOS_VOLUME_MUTE 2
81 #define TP_CMOS_BRIGHTNESS_UP 4
82 #define TP_CMOS_BRIGHTNESS_DOWN 5
84 /* ThinkPad CMOS NVRAM constants */
85 #define TP_NVRAM_ADDR_BRIGHTNESS 0x5e
86 #define TP_NVRAM_MASK_LEVEL_BRIGHTNESS 0x07
87 #define TP_NVRAM_POS_LEVEL_BRIGHTNESS 0
89 #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
90 #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
91 #define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
94 #define TPACPI_DBG_ALL 0xffff
95 #define TPACPI_DBG_ALL 0xffff
96 #define TPACPI_DBG_INIT 0x0001
97 #define TPACPI_DBG_EXIT 0x0002
98 #define dbg_printk(a_dbg_level, format, arg...) \
99 do { if (dbg_level & a_dbg_level) \
100 printk(IBM_DEBUG "%s: " format, __func__ , ## arg); } while (0)
101 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
102 #define vdbg_printk(a_dbg_level, format, arg...) \
103 dbg_printk(a_dbg_level, format, ## arg)
104 static const char *str_supported(int is_supported);
106 #define vdbg_printk(a_dbg_level, format, arg...)
110 #define TPACPI_HKEY_INPUT_VENDOR PCI_VENDOR_ID_IBM
111 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
112 #define TPACPI_HKEY_INPUT_VERSION 0x4101
115 #define IBM_HKEY_HID "IBM0068"
118 static int __must_check acpi_evalf(acpi_handle handle,
119 void *res, char *method, char *fmt, ...);
120 static int __must_check acpi_ec_read(int i, u8 * p);
121 static int __must_check acpi_ec_write(int i, u8 v);
122 static int __must_check _sta(acpi_handle handle);
125 static acpi_handle root_handle; /* root namespace */
126 static acpi_handle ec_handle; /* EC */
127 static acpi_handle ecrd_handle, ecwr_handle; /* 570 EC access */
128 static acpi_handle cmos_handle, hkey_handle; /* basic thinkpad handles */
130 static void drv_acpi_handle_init(char *name,
131 acpi_handle *handle, acpi_handle parent,
132 char **paths, int num_paths, char **path);
133 #define IBM_ACPIHANDLE_INIT(object) \
134 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
135 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
137 /* ThinkPad ACPI helpers */
138 static int issue_thinkpad_cmos_command(int cmos_cmd);
141 static struct proc_dir_entry *proc_dir;
144 static int dispatch_procfs_read(char *page, char **start, off_t off,
145 int count, int *eof, void *data);
146 static int dispatch_procfs_write(struct file *file,
147 const char __user * userbuf,
148 unsigned long count, void *data);
149 static char *next_cmd(char **cmds);
152 struct attribute_set {
153 unsigned int members, max_members;
154 struct attribute_group group;
157 static struct attribute_set *create_attr_set(unsigned int max_members,
159 #define destroy_attr_set(_set) \
161 static int add_to_attr_set(struct attribute_set* s, struct attribute *attr);
162 static int add_many_to_attr_set(struct attribute_set* s,
163 struct attribute **attr,
165 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
166 sysfs_create_group(_kobj, &_attr_set->group)
167 static void delete_attr_set(struct attribute_set* s, struct kobject *kobj);
169 static int parse_strtoul(const char *buf, unsigned long max,
170 unsigned long *value);
173 static struct platform_device *tpacpi_pdev;
174 static struct device *tpacpi_hwmon;
175 static struct platform_driver tpacpi_pdriver;
176 static struct input_dev *tpacpi_inputdev;
177 static int tpacpi_create_driver_attributes(struct device_driver *drv);
178 static void tpacpi_remove_driver_attributes(struct device_driver *drv);
181 static int experimental;
182 static u32 dbg_level;
183 static int force_load;
184 static unsigned int hotkey_report_mode;
186 static int thinkpad_acpi_module_init(void);
187 static void thinkpad_acpi_module_exit(void);
190 /****************************************************************************
196 struct tp_acpi_drv_struct {
197 const struct acpi_device_id *hid;
198 struct acpi_driver *driver;
200 void (*notify) (struct ibm_struct *, u32);
203 struct acpi_device *device;
209 int (*read) (char *);
210 int (*write) (char *);
212 void (*resume) (void);
214 struct list_head all_drivers;
216 struct tp_acpi_drv_struct *acpi;
219 u8 acpi_driver_registered:1;
220 u8 acpi_notify_installed:1;
227 struct ibm_init_struct {
230 int (*init) (struct ibm_init_struct *);
231 struct ibm_struct *data;
235 #ifdef CONFIG_THINKPAD_ACPI_BAY
248 u16 fan_ctrl_status_undef:1;
249 u16 input_device_registered:1;
250 u16 platform_drv_registered:1;
251 u16 platform_drv_attrs_registered:1;
254 struct thinkpad_id_data {
255 unsigned int vendor; /* ThinkPad vendor:
256 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
258 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
259 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
261 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
267 static struct thinkpad_id_data thinkpad_id;
269 static struct list_head tpacpi_all_drivers;
271 static struct ibm_init_struct ibms_init[];
272 static int set_ibm_param(const char *val, struct kernel_param *kp);
273 static int ibm_init(struct ibm_init_struct *iibm);
274 static void ibm_exit(struct ibm_struct *ibm);
278 * procfs master subdriver
280 static int thinkpad_acpi_driver_init(struct ibm_init_struct *iibm);
281 static int thinkpad_acpi_driver_read(char *p);
288 #ifdef CONFIG_THINKPAD_ACPI_BAY
289 static acpi_handle bay_handle, bay_ej_handle;
290 static acpi_handle bay2_handle, bay2_ej_handle;
292 static int bay_init(struct ibm_init_struct *iibm);
293 static void bay_notify(struct ibm_struct *ibm, u32 event);
294 static int bay_read(char *p);
295 static int bay_write(char *buf);
296 #endif /* CONFIG_THINKPAD_ACPI_BAY */
303 static acpi_handle beep_handle;
305 static int beep_read(char *p);
306 static int beep_write(char *buf);
310 * Bluetooth subdriver
314 /* ACPI GBDC/SBDC bits */
315 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
316 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
317 TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */
320 static int bluetooth_init(struct ibm_init_struct *iibm);
321 static int bluetooth_get_radiosw(void);
322 static int bluetooth_set_radiosw(int radio_on);
323 static int bluetooth_read(char *p);
324 static int bluetooth_write(char *buf);
328 * Brightness (backlight) subdriver
331 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
333 static struct backlight_device *ibm_backlight_device;
334 static int brightness_offset = 0x31;
335 static int brightness_mode;
337 static int brightness_init(struct ibm_init_struct *iibm);
338 static void brightness_exit(void);
339 static int brightness_get(struct backlight_device *bd);
340 static int brightness_set(int value);
341 static int brightness_update_status(struct backlight_device *bd);
342 static int brightness_read(char *p);
343 static int brightness_write(char *buf);
350 static int cmos_read(char *p);
351 static int cmos_write(char *buf);
358 #ifdef CONFIG_THINKPAD_ACPI_DOCK
359 static acpi_handle pci_handle;
360 static acpi_handle dock_handle;
362 static void dock_notify(struct ibm_struct *ibm, u32 event);
363 static int dock_read(char *p);
364 static int dock_write(char *buf);
365 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
372 static int ecdump_read(char *p) ;
373 static int ecdump_write(char *buf);
380 enum { /* Fan control constants */
381 fan_status_offset = 0x2f, /* EC register 0x2f */
382 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
383 * 0x84 must be read before 0x85 */
385 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
386 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
388 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
391 enum fan_status_access_mode {
392 TPACPI_FAN_NONE = 0, /* No fan status or control */
393 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
394 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
397 enum fan_control_access_mode {
398 TPACPI_FAN_WR_NONE = 0, /* No fan control */
399 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
400 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
401 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
404 enum fan_control_commands {
405 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
406 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
407 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
408 * and also watchdog cmd */
411 static int fan_control_allowed;
413 static enum fan_status_access_mode fan_status_access_mode;
414 static enum fan_control_access_mode fan_control_access_mode;
415 static enum fan_control_commands fan_control_commands;
416 static u8 fan_control_initial_status;
417 static u8 fan_control_desired_level;
418 static int fan_watchdog_maxinterval;
420 static struct mutex fan_mutex;
422 static acpi_handle fans_handle, gfan_handle, sfan_handle;
424 static int fan_init(struct ibm_init_struct *iibm);
425 static void fan_exit(void);
426 static int fan_get_status(u8 *status);
427 static int fan_get_status_safe(u8 *status);
428 static int fan_get_speed(unsigned int *speed);
429 static void fan_update_desired_level(u8 status);
430 static void fan_watchdog_fire(struct work_struct *ignored);
431 static void fan_watchdog_reset(void);
432 static int fan_set_level(int level);
433 static int fan_set_level_safe(int level);
434 static int fan_set_enable(void);
435 static int fan_set_disable(void);
436 static int fan_set_speed(int speed);
437 static int fan_read(char *p);
438 static int fan_write(char *buf);
439 static int fan_write_cmd_level(const char *cmd, int *rc);
440 static int fan_write_cmd_enable(const char *cmd, int *rc);
441 static int fan_write_cmd_disable(const char *cmd, int *rc);
442 static int fan_write_cmd_speed(const char *cmd, int *rc);
443 static int fan_write_cmd_watchdog(const char *cmd, int *rc);
450 static int hotkey_orig_status;
451 static u32 hotkey_orig_mask;
453 static struct mutex hotkey_mutex;
455 static int hotkey_init(struct ibm_init_struct *iibm);
456 static void hotkey_exit(void);
457 static int hotkey_get(int *status, u32 *mask);
458 static int hotkey_set(int status, u32 mask);
459 static void hotkey_notify(struct ibm_struct *ibm, u32 event);
460 static int hotkey_read(char *p);
461 static int hotkey_write(char *buf);
468 enum led_access_mode {
470 TPACPI_LED_570, /* 570 */
471 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
472 TPACPI_LED_NEW, /* all others */
475 enum { /* For TPACPI_LED_OLD */
476 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
477 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
478 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
481 static enum led_access_mode led_supported;
482 static acpi_handle led_handle;
484 static int led_init(struct ibm_init_struct *iibm);
485 static int led_read(char *p);
486 static int led_write(char *buf);
489 * Light (thinklight) subdriver
492 static acpi_handle lght_handle, ledb_handle;
494 static int light_init(struct ibm_init_struct *iibm);
495 static int light_read(char *p);
496 static int light_write(char *buf);
503 enum thermal_access_mode {
504 TPACPI_THERMAL_NONE = 0, /* No thermal support */
505 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
506 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
507 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
508 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
511 enum { /* TPACPI_THERMAL_TPEC_* */
512 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
513 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
514 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
517 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
518 struct ibm_thermal_sensors_struct {
519 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
522 static enum thermal_access_mode thermal_read_mode;
524 static int thermal_init(struct ibm_init_struct *iibm);
525 static int thermal_get_sensor(int idx, s32 *value);
526 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s);
527 static int thermal_read(char *p);
534 enum video_access_mode {
535 TPACPI_VIDEO_NONE = 0,
536 TPACPI_VIDEO_570, /* 570 */
537 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
538 TPACPI_VIDEO_NEW, /* all others */
541 enum { /* video status flags, based on VIDEO_570 */
542 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
543 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
544 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
547 enum { /* TPACPI_VIDEO_570 constants */
548 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
549 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
550 * video_status_flags */
551 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
552 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
555 static enum video_access_mode video_supported;
556 static int video_orig_autosw;
557 static acpi_handle vid_handle, vid2_handle;
559 static int video_init(struct ibm_init_struct *iibm);
560 static void video_exit(void);
561 static int video_outputsw_get(void);
562 static int video_outputsw_set(int status);
563 static int video_autosw_get(void);
564 static int video_autosw_set(int enable);
565 static int video_outputsw_cycle(void);
566 static int video_expand_toggle(void);
567 static int video_read(char *p);
568 static int video_write(char *buf);
575 static int volume_offset = 0x30;
577 static int volume_read(char *p);
578 static int volume_write(char *buf);
586 /* ACPI GWAN/SWAN bits */
587 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
588 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
589 TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */
592 static int wan_init(struct ibm_init_struct *iibm);
593 static int wan_get_radiosw(void);
594 static int wan_set_radiosw(int radio_on);
595 static int wan_read(char *p);
596 static int wan_write(char *buf);
599 #endif /* __THINKPAD_ACPI_H */