linux-imx

/*

 * dell-smm-hwmon.c -- Linux driver for accessing the SMM BIOS on Dell laptops.

 *

 * Copyright (C) 2001  Massimo Dal Zotto <dz@debian.org>

 *

 * Hwmon integration:

 * Copyright (C) 2011  Jean Delvare <jdelvare@suse.de>

 * Copyright (C) 2013, 2014  Guenter Roeck <linux@roeck-us.net>

 * Copyright (C) 2014, 2015  Pali Rohár <pali.rohar@gmail.com>

 *

 * 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, 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.

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/cpu.h>

#include <linux/delay.h>

#include <linux/module.h>

#include <linux/types.h>

#include <linux/init.h>

#include <linux/proc_fs.h>

#include <linux/seq_file.h>

#include <linux/dmi.h>

#include <linux/capability.h>

#include <linux/mutex.h>

#include <linux/hwmon.h>

#include <linux/hwmon-sysfs.h>

#include <linux/uaccess.h>

#include <linux/io.h>

#include <linux/sched.h>

#include <linux/ctype.h>

#include <linux/smp.h>

​

#include <linux/i8k.h>

​

#define I8K_SMM_FN_STATUS   0x0025

#define I8K_SMM_POWER_STATUS    0x0069

#define I8K_SMM_SET_FAN     0x01a3

#define I8K_SMM_GET_FAN     0x00a3

#define I8K_SMM_GET_SPEED   0x02a3

#define I8K_SMM_GET_FAN_TYPE    0x03a3

#define I8K_SMM_GET_NOM_SPEED   0x04a3

#define I8K_SMM_GET_TEMP    0x10a3

#define I8K_SMM_GET_TEMP_TYPE   0x11a3

#define I8K_SMM_GET_DELL_SIG1   0xfea3

#define I8K_SMM_GET_DELL_SIG2   0xffa3

​

#define I8K_FAN_MULT        30

#define I8K_FAN_MAX_RPM     30000

#define I8K_MAX_TEMP        127

​

#define I8K_FN_NONE     0x00

#define I8K_FN_UP       0x01

#define I8K_FN_DOWN     0x02

#define I8K_FN_MUTE     0x04