linux-imx

/*

 * via686a.c - Part of lm_sensors, Linux kernel modules

 *         for hardware monitoring

 *

 * Copyright (c) 1998 - 2002  Frodo Looijaard <frodol@dds.nl>,

 *                Kyösti Mälkki <kmalkki@cc.hut.fi>,

 *                Mark Studebaker <mdsxyz123@yahoo.com>,

 *                and Bob Dougherty <bobd@stanford.edu>

 *

 * (Some conversion-factor data were contributed by Jonathan Teh Soon Yew

 * <j.teh@iname.com> and Alex van Kaam <darkside@chello.nl>.)

 *

 * 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.

 */

​

/*

 * Supports the Via VT82C686A, VT82C686B south bridges.

 * Reports all as a 686A.

 * Warning - only supports a single device.

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/pci.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/sysfs.h>

#include <linux/acpi.h>

#include <linux/io.h>

​

​

/*

 * If force_addr is set to anything different from 0, we forcibly enable

 * the device at the given address.

 */

static unsigned short force_addr;

module_param(force_addr, ushort, 0);

MODULE_PARM_DESC(force_addr,

         "Initialize the base address of the sensors");

​

static struct platform_device *pdev;

​

/*

 * The Via 686a southbridge has a LM78-like chip integrated on the same IC.