/* * thinkpad_acpi.h - ThinkPad ACPI Extras * * * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> * Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #ifndef __THINKPAD_ACPI_H__ #define __THINKPAD_ACPI_H__ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/types.h> #include <linux/string.h> #include <linux/list.h> #include <linux/mutex.h> #include <linux/proc_fs.h> #include <linux/sysfs.h> #include <linux/backlight.h> #include <linux/fb.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <asm/uaccess.h> #include <linux/dmi.h> #include <linux/jiffies.h> #include <linux/workqueue.h> #include <acpi/acpi_drivers.h> #include <acpi/acnamesp.h> /**************************************************************************** * Main driver */ #define IBM_NAME "thinkpad" #define IBM_DESC "ThinkPad ACPI Extras" #define IBM_FILE "thinkpad_acpi" #define IBM_URL "http://ibm-acpi.sf.net/" #define IBM_MAIL "ibm-acpi-devel@lists.sourceforge.net" #define IBM_PROC_DIR "ibm" #define IBM_ACPI_EVENT_PREFIX "ibm" #define IBM_DRVR_NAME IBM_FILE #define IBM_LOG IBM_FILE ": " #define IBM_ERR KERN_ERR IBM_LOG #define IBM_NOTICE KERN_NOTICE IBM_LOG #define IBM_INFO KERN_INFO IBM_LOG #define IBM_DEBUG KERN_DEBUG IBM_LOG #define IBM_MAX_ACPI_ARGS 3 /* ThinkPad CMOS commands */ #define TP_CMOS_VOLUME_DOWN 0 #define TP_CMOS_VOLUME_UP 1 #define TP_CMOS_VOLUME_MUTE 2 #define TP_CMOS_BRIGHTNESS_UP 4 #define TP_CMOS_BRIGHTNESS_DOWN 5 #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off") #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") #define strlencmp(a,b) (strncmp((a), (b), strlen(b))) /* Debugging */ #define TPACPI_DBG_ALL 0xffff #define TPACPI_DBG_ALL 0xffff #define TPACPI_DBG_INIT 0x0001 #define TPACPI_DBG_EXIT 0x0002 #define dbg_printk(a_dbg_level, format, arg...) \ do { if (dbg_level & a_dbg_level) \ printk(IBM_DEBUG "%s: " format, __func__ , ## arg); } while (0) #ifdef CONFIG_THINKPAD_ACPI_DEBUG #define vdbg_printk(a_dbg_level, format, arg...) \ dbg_printk(a_dbg_level, format, ## arg) static const char *str_supported(int is_supported); #else #define vdbg_printk(a_dbg_level, format, arg...) #endif /* ACPI HIDs */ #define IBM_HKEY_HID "IBM0068" #define IBM_PCI_HID "PNP0A03" /* ACPI helpers */ static int __must_check acpi_evalf(acpi_handle handle, void *res, char *method, char *fmt, ...); static int __must_check acpi_ec_read(int i, u8 * p); static int __must_check acpi_ec_write(int i, u8 v); static int __must_check _sta(acpi_handle handle); /* ACPI handles */ static acpi_handle root_handle; /* root namespace */ static acpi_handle ec_handle; /* EC */ static acpi_handle ecrd_handle, ecwr_handle; /* 570 EC access */ static acpi_handle cmos_handle, hkey_handle; /* basic thinkpad handles */ static void drv_acpi_handle_init(char *name, acpi_handle *handle, acpi_handle parent, char **paths, int num_paths, char **path); #define IBM_ACPIHANDLE_INIT(object) \ drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ object##_paths, ARRAY_SIZE(object##_paths), &object##_path) /* ThinkPad ACPI helpers */ static int issue_thinkpad_cmos_command(int cmos_cmd); /* procfs support */ static struct proc_dir_entry *proc_dir; /* procfs helpers */ static int dispatch_procfs_read(char *page, char **start, off_t off, int count, int *eof, void *data); static int dispatch_procfs_write(struct file *file, const char __user * userbuf, unsigned long count, void *data); static char *next_cmd(char **cmds); /* sysfs support */ struct attribute_set { unsigned int members, max_members; struct attribute_group group; }; static struct attribute_set *create_attr_set(unsigned int max_members, const char* name); #define destroy_attr_set(_set) \ kfree(_set); static int add_to_attr_set(struct attribute_set* s, struct attribute *attr); static int add_many_to_attr_set(struct attribute_set* s, struct attribute **attr, unsigned int count); #define register_attr_set_with_sysfs(_attr_set, _kobj) \ sysfs_create_group(_kobj, &_attr_set->group) static void delete_attr_set(struct attribute_set* s, struct kobject *kobj); static int parse_strtoul(const char *buf, unsigned long max, unsigned long *value); /* Device model */ static struct platform_device *tpacpi_pdev; static struct class_device *tpacpi_hwmon; static struct platform_driver tpacpi_pdriver; static int tpacpi_create_driver_attributes(struct device_driver *drv); static void tpacpi_remove_driver_attributes(struct device_driver *drv); /* Module */ static int experimental; static u32 dbg_level; static int force_load; static char *ibm_thinkpad_ec_found; static char* check_dmi_for_ec(void); static int thinkpad_acpi_module_init(void); static void thinkpad_acpi_module_exit(void); /**************************************************************************** * Subdrivers */ struct ibm_struct; struct tp_acpi_drv_struct { char *hid; struct acpi_driver *driver; void (*notify) (struct ibm_struct *, u32); acpi_handle *handle; u32 type; struct acpi_device *device; }; struct ibm_struct { char *name; int (*read) (char *); int (*write) (char *); void (*exit) (void); struct list_head all_drivers; struct tp_acpi_drv_struct *acpi; struct { u8 acpi_driver_registered:1; u8 acpi_notify_installed:1; u8 proc_created:1; u8 init_called:1; u8 experimental:1; } flags; }; struct ibm_init_struct { char param[32]; int (*init) (struct ibm_init_struct *); struct ibm_struct *data; }; static struct { #ifdef CONFIG_THINKPAD_ACPI_BAY u16 bay_status:1; u16 bay_eject:1; u16 bay_status2:1; u16 bay_eject2:1; #endif u16 bluetooth:1; u16 hotkey:1; u16 hotkey_mask:1; u16 light:1; u16 light_status:1; u16 wan:1; u16 fan_ctrl_status_undef:1; } tp_features; static struct list_head tpacpi_all_drivers; static struct ibm_init_struct ibms_init[]; static int set_ibm_param(const char *val, struct kernel_param *kp); static int ibm_init(struct ibm_init_struct *iibm); static void ibm_exit(struct ibm_struct *ibm); /* * procfs master subdriver */ static int thinkpad_acpi_driver_init(struct ibm_init_struct *iibm); static int thinkpad_acpi_driver_read(char *p); /* * Bay subdriver */ #ifdef CONFIG_THINKPAD_ACPI_BAY static acpi_handle bay_handle, bay_ej_handle; static acpi_handle bay2_handle, bay2_ej_handle; static int bay_init(struct ibm_init_struct *iibm); static void bay_notify(struct ibm_struct *ibm, u32 event); static int bay_read(char *p); static int bay_write(char *buf); #endif /* CONFIG_THINKPAD_ACPI_BAY */ /* * Beep subdriver */ static acpi_handle beep_handle; static int beep_read(char *p); static int beep_write(char *buf); /* * Bluetooth subdriver */ #define TPACPI_BLUETH_SYSFS_GROUP "bluetooth" enum { /* ACPI GBDC/SBDC bits */ TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */ }; static int bluetooth_init(struct ibm_init_struct *iibm); static int bluetooth_get_radiosw(void); static int bluetooth_set_radiosw(int radio_on); static int bluetooth_read(char *p); static int bluetooth_write(char *buf); /* * Brightness (backlight) subdriver */ #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" static struct backlight_device *ibm_backlight_device; static int brightness_offset = 0x31; static int brightness_init(struct ibm_init_struct *iibm); static void brightness_exit(void); static int brightness_get(struct backlight_device *bd); static int brightness_set(int value); static int brightness_update_status(struct backlight_device *bd); static int brightness_read(char *p); static int brightness_write(char *buf); /* * CMOS subdriver */ static int cmos_read(char *p); static int cmos_write(char *buf); /* * Dock subdriver */ #ifdef CONFIG_THINKPAD_ACPI_DOCK static acpi_handle pci_handle; static acpi_handle dock_handle; static void dock_notify(struct ibm_struct *ibm, u32 event); static int dock_read(char *p); static int dock_write(char *buf); #endif /* CONFIG_THINKPAD_ACPI_DOCK */ /* * EC dump subdriver */ static int ecdump_read(char *p) ; static int ecdump_write(char *buf); /* * Fan subdriver */ enum { /* Fan control constants */ fan_status_offset = 0x2f, /* EC register 0x2f */ fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) * 0x84 must be read before 0x85 */ TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ }; enum fan_status_access_mode { TPACPI_FAN_NONE = 0, /* No fan status or control */ TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ }; enum fan_control_access_mode { TPACPI_FAN_WR_NONE = 0, /* No fan control */ TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ }; enum fan_control_commands { TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, * and also watchdog cmd */ }; static int fan_control_allowed; static enum fan_status_access_mode fan_status_access_mode; static enum fan_control_access_mode fan_control_access_mode; static enum fan_control_commands fan_control_commands; static u8 fan_control_initial_status; static u8 fan_control_desired_level; static int fan_watchdog_maxinterval; static struct mutex fan_mutex; static acpi_handle fans_handle, gfan_handle, sfan_handle; static int fan_init(struct ibm_init_struct *iibm); static void fan_exit(void); static int fan_get_status(u8 *status); static int fan_get_status_safe(u8 *status); static int fan_get_speed(unsigned int *speed); static void fan_update_desired_level(u8 status); static void fan_watchdog_fire(struct work_struct *ignored); static void fan_watchdog_reset(void); static int fan_set_level(int level); static int fan_set_level_safe(int level); static int fan_set_enable(void); static int fan_set_disable(void); static int fan_set_speed(int speed); static int fan_read(char *p); static int fan_write(char *buf); static int fan_write_cmd_level(const char *cmd, int *rc); static int fan_write_cmd_enable(const char *cmd, int *rc); static int fan_write_cmd_disable(const char *cmd, int *rc); static int fan_write_cmd_speed(const char *cmd, int *rc); static int fan_write_cmd_watchdog(const char *cmd, int *rc); /* * Hotkey subdriver */ #define TPACPI_HOTKEY_SYSFS_GROUP "hotkey" static int hotkey_orig_status; static int hotkey_orig_mask; static struct mutex hotkey_mutex; static int hotkey_init(struct ibm_init_struct *iibm); static void hotkey_exit(void); static int hotkey_get(int *status, int *mask); static int hotkey_set(int status, int mask); static void hotkey_notify(struct ibm_struct *ibm, u32 event); static int hotkey_read(char *p); static int hotkey_write(char *buf); /* * LED subdriver */ enum led_access_mode { TPACPI_LED_NONE = 0, TPACPI_LED_570, /* 570 */ TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ TPACPI_LED_NEW, /* all others */ }; enum { /* For TPACPI_LED_OLD */ TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ }; static enum led_access_mode led_supported; static acpi_handle led_handle; static int led_init(struct ibm_init_struct *iibm); static int led_read(char *p); static int led_write(char *buf); /* * Light (thinklight) subdriver */ static acpi_handle lght_handle, ledb_handle; static int light_init(struct ibm_init_struct *iibm); static int light_read(char *p); static int light_write(char *buf); /* * Thermal subdriver */ enum thermal_access_mode { TPACPI_THERMAL_NONE = 0, /* No thermal support */ TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ }; enum { /* TPACPI_THERMAL_TPEC_* */ TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ }; #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ struct ibm_thermal_sensors_struct { s32 temp[TPACPI_MAX_THERMAL_SENSORS]; }; static enum thermal_access_mode thermal_read_mode; static int thermal_init(struct ibm_init_struct *iibm); static int thermal_get_sensor(int idx, s32 *value); static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s); static int thermal_read(char *p); /* * Video subdriver */ enum video_access_mode { TPACPI_VIDEO_NONE = 0, TPACPI_VIDEO_570, /* 570 */ TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ TPACPI_VIDEO_NEW, /* all others */ }; enum { /* video status flags, based on VIDEO_570 */ TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ }; enum { /* TPACPI_VIDEO_570 constants */ TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to * video_status_flags */ TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ }; static enum video_access_mode video_supported; static int video_orig_autosw; static acpi_handle vid_handle, vid2_handle; static int video_init(struct ibm_init_struct *iibm); static void video_exit(void); static int video_outputsw_get(void); static int video_outputsw_set(int status); static int video_autosw_get(void); static int video_autosw_set(int enable); static int video_outputsw_cycle(void); static int video_expand_toggle(void); static int video_read(char *p); static int video_write(char *buf); /* * Volume subdriver */ static int volume_offset = 0x30; static int volume_read(char *p); static int volume_write(char *buf); /* * Wan subdriver */ #define TPACPI_WAN_SYSFS_GROUP "wwan" enum { /* ACPI GWAN/SWAN bits */ TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */ }; static int wan_init(struct ibm_init_struct *iibm); static int wan_get_radiosw(void); static int wan_set_radiosw(int radio_on); static int wan_read(char *p); static int wan_write(char *buf); #endif /* __THINKPAD_ACPI_H */