linux-imx

/*

 * smsc47b397.c - Part of lm_sensors, Linux kernel modules

 * for hardware monitoring

 *

 * Supports the SMSC LPC47B397-NC Super-I/O chip.

 *

 * Author/Maintainer: Mark M. Hoffman <mhoffman@lightlink.com>

 * Copyright (C) 2004 Utilitek Systems, Inc.

 *

 * derived in part from smsc47m1.c:

 * Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>

 * Copyright (C) 2004 Jean Delvare <jdelvare@suse.de>

 *

 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/ioport.h>

#include <linux/jiffies.h>

#include <linux/platform_device.h>

#include <linux/hwmon.h>

#include <linux/hwmon-sysfs.h>

#include <linux/err.h>

#include <linux/init.h>

#include <linux/mutex.h>

#include <linux/acpi.h>

#include <linux/io.h>

​

static unsigned short force_id;

module_param(force_id, ushort, 0);

MODULE_PARM_DESC(force_id, "Override the detected device ID");

​

static struct platform_device *pdev;

​

#define DRVNAME "smsc47b397"

​

/* Super-I/0 registers and commands */

​

#define REG 0x2e    /* The register to read/write */

#define VAL 0x2f    /* The value to read/write */

​

static inline void superio_outb(int reg, int val)

{

    outb(reg, REG);

    outb(val, VAL);

}

​

static inline int superio_inb(int reg)