/*
* 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/proc_fs.h>
#include <linux/backlight.h>
#include <linux/fb.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_DIR "ibm"
#define IBM_ACPI_EVENT_PREFIX "ibm"
#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)))
/* ACPI HIDs */
#define IBM_HKEY_HID "IBM0068"
#define IBM_PCI_HID "PNP0A03"
/* ACPI helpers */
static int acpi_evalf(acpi_handle handle,
void *res, char *method, char *fmt, ...);
static int acpi_ec_read(int i, u8 * p);
static int acpi_ec_write(int i, u8 v);
static int _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 ibm_handle_init(char *name,
acpi_handle * handle, acpi_handle parent,
char **paths, int num_paths, char **path);
#define IBM_HANDLE_INIT(object) \
ibm_handle_init(#object, &object##_handle, *object##_parent, \
object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
/* procfs support */
static struct proc_dir_entry *proc_dir;
static int thinkpad_acpi_driver_init(void);
static int thinkpad_acpi_driver_read(char *p);
/* procfs helpers */
static int dispatch_read(char *page, char **start, off_t off, int count,
int *eof, void *data);
static int dispatch_write(struct file *file, const char __user * userbuf,
unsigned long count, void *data);
static char *next_cmd(char **cmds);
/* Module */
static int experimental;
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 {
char *name;
char param[32];
char *hid;
struct acpi_driver *driver;
int (*init) (void);
int (*read) (char *);
int (*write) (char *);
void (*exit) (void);
void (*notify) (struct ibm_struct *, u32);
acpi_handle *handle;
int type;
struct acpi_device *device;
int driver_registered;
int proc_created;
int init_called;
int notify_installed;
int experimental;
};
static struct ibm_struct ibms[];
static int set_ibm_param(const char *val, struct kernel_param *kp);
static int ibm_init(struct ibm_struct *ibm);
static void ibm_exit(struct ibm_struct *ibm);
/* ACPI devices */
static void dispatch_notify(acpi_handle handle, u32 event, void *data);
static int setup_notify(struct ibm_struct *ibm);
static int ibm_device_add(struct acpi_device *device);
static int register_tpacpi_subdriver(struct ibm_struct *ibm);
/*
* Bay subdriver
*/
#ifdef CONFIG_THINKPAD_ACPI_BAY
static int bay_status_supported, bay_eject_supported;
static int bay_status2_supported, bay_eject2_supported;
static acpi_handle bay_handle, bay_ej_handle;
static acpi_handle bay2_handle, bay2_ej_handle;
static int bay_init(void);
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
*/
static int bluetooth_supported;
static int bluetooth_init(void);
static int bluetooth_status(void);
static int bluetooth_read(char *p);
static int bluetooth_write(char *buf);
/*
* Brightness (backlight) subdriver
*/
static struct backlight_device *ibm_backlight_device;
static int brightness_offset = 0x31;
static int brightness_init(void);
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_eval(int cmos_cmd);
static int cmos_read(char *p);
static int cmos_write(char *buf);
/*
* Dock subdriver
*/
static acpi_handle pci_handle;
#ifdef CONFIG_THINKPAD_ACPI_DOCK
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 */
IBMACPI_FAN_EC_DISENGAGED = 0x40, /* EC mode: tachometer
* disengaged */
IBMACPI_FAN_EC_AUTO = 0x80, /* EC mode: auto fan
* control */
};
enum fan_status_access_mode {
IBMACPI_FAN_NONE = 0, /* No fan status or control */
IBMACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
IBMACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
};
enum fan_control_access_mode {
IBMACPI_FAN_WR_NONE = 0, /* No fan control */
IBMACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
IBMACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
IBMACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
};
enum fan_control_commands {
IBMACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
IBMACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
IBMACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
* and also watchdog cmd */
};
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 int fan_control_status_known;
static u8 fan_control_initial_status;
static int fan_watchdog_maxinterval;
static acpi_handle fans_handle, gfan_handle, sfan_handle;
static int fan_init(void);
static void fan_exit(void);
static int fan_get_status(u8 *status);
static int fan_get_speed(unsigned int *speed);
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_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
*/
static int hotkey_supported;
static int hotkey_mask_supported;
static int hotkey_orig_status;
static int hotkey_orig_mask;
static int hotkey_init(void);
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 {
IBMACPI_LED_NONE = 0,
IBMACPI_LED_570, /* 570 */
IBMACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
IBMACPI_LED_NEW, /* all others */
};
enum { /* For IBMACPI_LED_OLD */
IBMACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
IBMACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
IBMACPI_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(void);
static int led_read(char *p);
static int led_write(char *buf);
/*
* Light (thinklight) subdriver
*/
static int light_supported;
static int light_status_supported;
static acpi_handle lght_handle, ledb_handle;
static int light_init(void);
static int light_read(char *p);
static int light_write(char *buf);
/*
* Thermal subdriver
*/
enum thermal_access_mode {
IBMACPI_THERMAL_NONE = 0, /* No thermal support */
IBMACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
IBMACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
IBMACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
IBMACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
};
#define IBMACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
struct ibm_thermal_sensors_struct {
s32 temp[IBMACPI_MAX_THERMAL_SENSORS];
};
static int thermal_init(void);
static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s);
static int thermal_read(char *p);
/*
* Video subdriver
*/
enum video_access_mode {
IBMACPI_VIDEO_NONE = 0,
IBMACPI_VIDEO_570, /* 570 */
IBMACPI_VIDEO_770, /* 600e/x, 770e, 770x */
IBMACPI_VIDEO_NEW, /* all others */
};
static enum video_access_mode video_supported;
static int video_orig_autosw;
static acpi_handle vid_handle, vid2_handle;
static int video_init(void);
static void video_exit(void);
static int video_status(void);
static int video_autosw(void);
static int video_switch(void);
static int video_switch2(int status);
static int video_expand(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
*/
static int wan_supported;
static int wan_init(void);
static int wan_status(void);
static int wan_read(char *p);
static int wan_write(char *buf);
#endif /* __THINKPAD_ACPI_H */
