439 lines
11 KiB
C
439 lines
11 KiB
C
/*
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* thinkpad_acpi.h - ThinkPad ACPI Extras
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*
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*
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* Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
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* Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#ifndef __THINKPAD_ACPI_H__
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#define __THINKPAD_ACPI_H__
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/proc_fs.h>
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#include <linux/backlight.h>
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#include <linux/fb.h>
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#include <asm/uaccess.h>
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#include <linux/dmi.h>
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#include <linux/jiffies.h>
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#include <linux/workqueue.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acnamesp.h>
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/****************************************************************************
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* Main driver
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*/
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#define IBM_NAME "thinkpad"
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#define IBM_DESC "ThinkPad ACPI Extras"
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#define IBM_FILE "thinkpad_acpi"
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#define IBM_URL "http://ibm-acpi.sf.net/"
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#define IBM_DIR "ibm"
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#define IBM_ACPI_EVENT_PREFIX "ibm"
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#define IBM_LOG IBM_FILE ": "
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#define IBM_ERR KERN_ERR IBM_LOG
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#define IBM_NOTICE KERN_NOTICE IBM_LOG
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#define IBM_INFO KERN_INFO IBM_LOG
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#define IBM_DEBUG KERN_DEBUG IBM_LOG
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#define IBM_MAX_ACPI_ARGS 3
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/* ThinkPad CMOS commands */
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#define TP_CMOS_VOLUME_DOWN 0
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#define TP_CMOS_VOLUME_UP 1
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#define TP_CMOS_VOLUME_MUTE 2
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#define TP_CMOS_BRIGHTNESS_UP 4
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#define TP_CMOS_BRIGHTNESS_DOWN 5
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#define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
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#define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
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#define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
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/* ACPI HIDs */
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#define IBM_HKEY_HID "IBM0068"
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#define IBM_PCI_HID "PNP0A03"
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/* ACPI helpers */
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static int acpi_evalf(acpi_handle handle,
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void *res, char *method, char *fmt, ...);
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static int acpi_ec_read(int i, u8 * p);
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static int acpi_ec_write(int i, u8 v);
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static int _sta(acpi_handle handle);
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/* ACPI handles */
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static acpi_handle root_handle; /* root namespace */
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static acpi_handle ec_handle; /* EC */
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static acpi_handle ecrd_handle, ecwr_handle; /* 570 EC access */
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static acpi_handle cmos_handle, hkey_handle; /* basic thinkpad handles */
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static void ibm_handle_init(char *name,
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acpi_handle * handle, acpi_handle parent,
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char **paths, int num_paths, char **path);
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#define IBM_HANDLE_INIT(object) \
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ibm_handle_init(#object, &object##_handle, *object##_parent, \
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object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
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/* procfs support */
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static struct proc_dir_entry *proc_dir;
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static int thinkpad_acpi_driver_init(void);
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static int thinkpad_acpi_driver_read(char *p);
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/* procfs helpers */
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static int dispatch_read(char *page, char **start, off_t off, int count,
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int *eof, void *data);
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static int dispatch_write(struct file *file, const char __user * userbuf,
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unsigned long count, void *data);
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static char *next_cmd(char **cmds);
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/* Module */
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static int experimental;
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static char *ibm_thinkpad_ec_found;
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static char* check_dmi_for_ec(void);
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static int thinkpad_acpi_module_init(void);
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static void thinkpad_acpi_module_exit(void);
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/****************************************************************************
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* Subdrivers
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*/
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struct ibm_struct {
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char *name;
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char param[32];
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char *hid;
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struct acpi_driver *driver;
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int (*init) (void);
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int (*read) (char *);
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int (*write) (char *);
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void (*exit) (void);
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void (*notify) (struct ibm_struct *, u32);
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acpi_handle *handle;
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int type;
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struct acpi_device *device;
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int driver_registered;
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int proc_created;
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int init_called;
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int notify_installed;
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int experimental;
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};
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static struct ibm_struct ibms[];
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static int set_ibm_param(const char *val, struct kernel_param *kp);
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static int ibm_init(struct ibm_struct *ibm);
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static void ibm_exit(struct ibm_struct *ibm);
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/* ACPI devices */
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static void dispatch_notify(acpi_handle handle, u32 event, void *data);
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static int setup_notify(struct ibm_struct *ibm);
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static int ibm_device_add(struct acpi_device *device);
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static int register_tpacpi_subdriver(struct ibm_struct *ibm);
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/*
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* Bay subdriver
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*/
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#ifdef CONFIG_THINKPAD_ACPI_BAY
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static int bay_status_supported, bay_eject_supported;
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static int bay_status2_supported, bay_eject2_supported;
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static acpi_handle bay_handle, bay_ej_handle;
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static acpi_handle bay2_handle, bay2_ej_handle;
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static int bay_init(void);
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static void bay_notify(struct ibm_struct *ibm, u32 event);
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static int bay_read(char *p);
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static int bay_write(char *buf);
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#endif /* CONFIG_THINKPAD_ACPI_BAY */
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/*
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* Beep subdriver
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*/
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static acpi_handle beep_handle;
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static int beep_read(char *p);
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static int beep_write(char *buf);
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/*
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* Bluetooth subdriver
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*/
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static int bluetooth_supported;
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static int bluetooth_init(void);
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static int bluetooth_status(void);
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static int bluetooth_read(char *p);
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static int bluetooth_write(char *buf);
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/*
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* Brightness (backlight) subdriver
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*/
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static struct backlight_device *ibm_backlight_device;
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static int brightness_offset = 0x31;
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static int brightness_init(void);
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static void brightness_exit(void);
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static int brightness_get(struct backlight_device *bd);
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static int brightness_set(int value);
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static int brightness_update_status(struct backlight_device *bd);
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static int brightness_read(char *p);
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static int brightness_write(char *buf);
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/*
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* CMOS subdriver
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*/
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static int cmos_eval(int cmos_cmd);
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static int cmos_read(char *p);
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static int cmos_write(char *buf);
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/*
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* Dock subdriver
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*/
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static acpi_handle pci_handle;
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#ifdef CONFIG_THINKPAD_ACPI_DOCK
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static acpi_handle dock_handle;
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static void dock_notify(struct ibm_struct *ibm, u32 event);
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static int dock_read(char *p);
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static int dock_write(char *buf);
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#endif /* CONFIG_THINKPAD_ACPI_DOCK */
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/*
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* EC dump subdriver
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*/
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static int ecdump_read(char *p) ;
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static int ecdump_write(char *buf);
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/*
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* Fan subdriver
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*/
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enum { /* Fan control constants */
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fan_status_offset = 0x2f, /* EC register 0x2f */
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fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
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* 0x84 must be read before 0x85 */
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IBMACPI_FAN_EC_DISENGAGED = 0x40, /* EC mode: tachometer
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* disengaged */
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IBMACPI_FAN_EC_AUTO = 0x80, /* EC mode: auto fan
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* control */
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};
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enum fan_status_access_mode {
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IBMACPI_FAN_NONE = 0, /* No fan status or control */
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IBMACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
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IBMACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
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};
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enum fan_control_access_mode {
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IBMACPI_FAN_WR_NONE = 0, /* No fan control */
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IBMACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
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IBMACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
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IBMACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
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};
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enum fan_control_commands {
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IBMACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
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IBMACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
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IBMACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
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* and also watchdog cmd */
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};
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static enum fan_status_access_mode fan_status_access_mode;
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static enum fan_control_access_mode fan_control_access_mode;
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static enum fan_control_commands fan_control_commands;
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static int fan_control_status_known;
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static u8 fan_control_initial_status;
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static int fan_watchdog_maxinterval;
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static acpi_handle fans_handle, gfan_handle, sfan_handle;
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static int fan_init(void);
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static void fan_exit(void);
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static int fan_get_status(u8 *status);
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static int fan_get_speed(unsigned int *speed);
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static void fan_watchdog_fire(struct work_struct *ignored);
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static void fan_watchdog_reset(void);
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static int fan_set_level(int level);
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static int fan_set_enable(void);
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static int fan_set_disable(void);
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static int fan_set_speed(int speed);
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static int fan_read(char *p);
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static int fan_write(char *buf);
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static int fan_write_cmd_level(const char *cmd, int *rc);
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static int fan_write_cmd_enable(const char *cmd, int *rc);
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static int fan_write_cmd_disable(const char *cmd, int *rc);
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static int fan_write_cmd_speed(const char *cmd, int *rc);
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static int fan_write_cmd_watchdog(const char *cmd, int *rc);
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/*
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* Hotkey subdriver
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*/
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static int hotkey_supported;
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static int hotkey_mask_supported;
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static int hotkey_orig_status;
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static int hotkey_orig_mask;
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static int hotkey_init(void);
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static void hotkey_exit(void);
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static int hotkey_get(int *status, int *mask);
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static int hotkey_set(int status, int mask);
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static void hotkey_notify(struct ibm_struct *ibm, u32 event);
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static int hotkey_read(char *p);
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static int hotkey_write(char *buf);
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/*
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* LED subdriver
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*/
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enum led_access_mode {
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IBMACPI_LED_NONE = 0,
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IBMACPI_LED_570, /* 570 */
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IBMACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
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IBMACPI_LED_NEW, /* all others */
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};
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enum { /* For IBMACPI_LED_OLD */
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IBMACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
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IBMACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
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IBMACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
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};
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static enum led_access_mode led_supported;
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static acpi_handle led_handle;
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static int led_init(void);
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static int led_read(char *p);
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static int led_write(char *buf);
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/*
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* Light (thinklight) subdriver
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*/
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static int light_supported;
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static int light_status_supported;
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static acpi_handle lght_handle, ledb_handle;
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static int light_init(void);
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static int light_read(char *p);
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static int light_write(char *buf);
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/*
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* Thermal subdriver
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*/
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enum thermal_access_mode {
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IBMACPI_THERMAL_NONE = 0, /* No thermal support */
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IBMACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
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IBMACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
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IBMACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
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IBMACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
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};
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#define IBMACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
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struct ibm_thermal_sensors_struct {
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s32 temp[IBMACPI_MAX_THERMAL_SENSORS];
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};
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static int thermal_init(void);
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static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s);
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static int thermal_read(char *p);
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/*
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* Video subdriver
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*/
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enum video_access_mode {
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IBMACPI_VIDEO_NONE = 0,
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IBMACPI_VIDEO_570, /* 570 */
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IBMACPI_VIDEO_770, /* 600e/x, 770e, 770x */
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IBMACPI_VIDEO_NEW, /* all others */
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};
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static enum video_access_mode video_supported;
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static int video_orig_autosw;
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static acpi_handle vid_handle, vid2_handle;
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static int video_init(void);
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static void video_exit(void);
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static int video_status(void);
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static int video_autosw(void);
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static int video_switch(void);
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static int video_switch2(int status);
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static int video_expand(void);
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static int video_read(char *p);
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static int video_write(char *buf);
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/*
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* Volume subdriver
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*/
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static int volume_offset = 0x30;
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static int volume_read(char *p);
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static int volume_write(char *buf);
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/*
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* Wan subdriver
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*/
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static int wan_supported;
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static int wan_init(void);
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static int wan_status(void);
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static int wan_read(char *p);
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static int wan_write(char *buf);
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#endif /* __THINKPAD_ACPI_H */
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