2005-04-17 06:20:36 +08:00
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/*
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2012-01-15 12:39:24 +08:00
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* lm78.c - Part of lm_sensors, Linux kernel modules for hardware
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* monitoring
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* Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
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2014-01-30 03:40:08 +08:00
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* Copyright (c) 2007, 2011 Jean Delvare <jdelvare@suse.de>
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2012-01-15 12:39:24 +08:00
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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2005-04-17 06:20:36 +08:00
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2011-01-13 04:55:10 +08:00
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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2005-04-17 06:20:36 +08:00
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/jiffies.h>
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#include <linux/i2c.h>
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2005-07-16 09:39:18 +08:00
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#include <linux/hwmon.h>
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2005-08-01 04:12:09 +08:00
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#include <linux/hwmon-vid.h>
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2007-05-08 23:22:01 +08:00
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#include <linux/hwmon-sysfs.h>
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2005-07-16 09:39:18 +08:00
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#include <linux/err.h>
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2006-01-19 06:19:26 +08:00
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#include <linux/mutex.h>
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2005-04-17 06:20:36 +08:00
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2011-07-26 03:46:11 +08:00
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#ifdef CONFIG_ISA
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#include <linux/platform_device.h>
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#include <linux/ioport.h>
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#include <linux/io.h>
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#endif
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2007-05-08 23:22:00 +08:00
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2005-04-17 06:20:36 +08:00
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/* Addresses to scan */
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2008-02-18 11:28:03 +08:00
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static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
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0x2e, 0x2f, I2C_CLIENT_END };
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2009-12-15 04:17:27 +08:00
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enum chips { lm78, lm79 };
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2005-04-17 06:20:36 +08:00
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/* Many LM78 constants specified below */
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/* Length of ISA address segment */
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#define LM78_EXTENT 8
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/* Where are the ISA address/data registers relative to the base address */
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#define LM78_ADDR_REG_OFFSET 5
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#define LM78_DATA_REG_OFFSET 6
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/* The LM78 registers */
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#define LM78_REG_IN_MAX(nr) (0x2b + (nr) * 2)
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#define LM78_REG_IN_MIN(nr) (0x2c + (nr) * 2)
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#define LM78_REG_IN(nr) (0x20 + (nr))
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#define LM78_REG_FAN_MIN(nr) (0x3b + (nr))
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#define LM78_REG_FAN(nr) (0x28 + (nr))
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#define LM78_REG_TEMP 0x27
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#define LM78_REG_TEMP_OVER 0x39
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#define LM78_REG_TEMP_HYST 0x3a
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#define LM78_REG_ALARM1 0x41
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#define LM78_REG_ALARM2 0x42
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#define LM78_REG_VID_FANDIV 0x47
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#define LM78_REG_CONFIG 0x40
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#define LM78_REG_CHIPID 0x49
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#define LM78_REG_I2C_ADDR 0x48
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2012-01-15 12:39:24 +08:00
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/*
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* Conversions. Rounding and limit checking is only done on the TO_REG
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* variants.
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*/
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2005-04-17 06:20:36 +08:00
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2012-01-15 12:39:24 +08:00
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/*
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* IN: mV (0V to 4.08V)
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* REG: 16mV/bit
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*/
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2005-04-17 06:20:36 +08:00
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static inline u8 IN_TO_REG(unsigned long val)
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{
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2013-01-10 00:09:34 +08:00
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unsigned long nval = clamp_val(val, 0, 4080);
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2005-04-17 06:20:36 +08:00
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return (nval + 8) / 16;
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}
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#define IN_FROM_REG(val) ((val) * 16)
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static inline u8 FAN_TO_REG(long rpm, int div)
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{
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if (rpm <= 0)
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return 255;
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2013-12-12 15:05:33 +08:00
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if (rpm > 1350000)
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return 1;
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2013-01-10 00:09:34 +08:00
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return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
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2005-04-17 06:20:36 +08:00
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}
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static inline int FAN_FROM_REG(u8 val, int div)
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{
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2012-01-15 12:39:24 +08:00
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return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div);
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2005-04-17 06:20:36 +08:00
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}
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2012-01-15 12:39:24 +08:00
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/*
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* TEMP: mC (-128C to +127C)
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* REG: 1C/bit, two's complement
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*/
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2014-07-30 11:48:59 +08:00
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static inline s8 TEMP_TO_REG(long val)
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2005-04-17 06:20:36 +08:00
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{
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2013-01-10 00:09:34 +08:00
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int nval = clamp_val(val, -128000, 127000) ;
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2012-01-15 12:39:24 +08:00
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return nval < 0 ? (nval - 500) / 1000 : (nval + 500) / 1000;
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2005-04-17 06:20:36 +08:00
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}
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static inline int TEMP_FROM_REG(s8 val)
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{
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return val * 1000;
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}
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#define DIV_FROM_REG(val) (1 << (val))
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struct lm78_data {
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2008-10-17 23:51:16 +08:00
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struct i2c_client *client;
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2006-01-19 06:19:26 +08:00
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struct mutex lock;
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2005-04-17 06:20:36 +08:00
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enum chips type;
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2008-10-17 23:51:15 +08:00
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/* For ISA device only */
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const char *name;
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int isa_addr;
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2006-01-19 06:19:26 +08:00
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struct mutex update_lock;
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2005-04-17 06:20:36 +08:00
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char valid; /* !=0 if following fields are valid */
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unsigned long last_updated; /* In jiffies */
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u8 in[7]; /* Register value */
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u8 in_max[7]; /* Register value */
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u8 in_min[7]; /* Register value */
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u8 fan[3]; /* Register value */
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u8 fan_min[3]; /* Register value */
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s8 temp; /* Register value */
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s8 temp_over; /* Register value */
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s8 temp_hyst; /* Register value */
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u8 fan_div[3]; /* Register encoding, shifted right */
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u8 vid; /* Register encoding, combined */
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u16 alarms; /* Register encoding, combined */
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};
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2007-05-08 23:22:01 +08:00
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static int lm78_read_value(struct lm78_data *data, u8 reg);
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static int lm78_write_value(struct lm78_data *data, u8 reg, u8 value);
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2005-04-17 06:20:36 +08:00
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static struct lm78_data *lm78_update_device(struct device *dev);
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2007-05-08 23:22:01 +08:00
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static void lm78_init_device(struct lm78_data *data);
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2005-04-17 06:20:36 +08:00
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/* 7 Voltages */
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2019-01-23 02:07:16 +08:00
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static ssize_t in_show(struct device *dev, struct device_attribute *da,
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2007-05-08 23:22:01 +08:00
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char *buf)
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2005-04-17 06:20:36 +08:00
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{
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2007-05-08 23:22:01 +08:00
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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2005-04-17 06:20:36 +08:00
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struct lm78_data *data = lm78_update_device(dev);
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2007-05-08 23:22:01 +08:00
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in[attr->index]));
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2005-04-17 06:20:36 +08:00
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}
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2019-01-23 02:07:16 +08:00
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static ssize_t in_min_show(struct device *dev, struct device_attribute *da,
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2007-05-08 23:22:01 +08:00
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char *buf)
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2005-04-17 06:20:36 +08:00
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{
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2007-05-08 23:22:01 +08:00
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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2005-04-17 06:20:36 +08:00
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struct lm78_data *data = lm78_update_device(dev);
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2007-05-08 23:22:01 +08:00
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[attr->index]));
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2005-04-17 06:20:36 +08:00
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}
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2019-01-23 02:07:16 +08:00
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static ssize_t in_max_show(struct device *dev, struct device_attribute *da,
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2007-05-08 23:22:01 +08:00
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char *buf)
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2005-04-17 06:20:36 +08:00
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{
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2007-05-08 23:22:01 +08:00
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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2005-04-17 06:20:36 +08:00
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struct lm78_data *data = lm78_update_device(dev);
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2007-05-08 23:22:01 +08:00
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[attr->index]));
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2005-04-17 06:20:36 +08:00
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}
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2019-01-23 02:07:16 +08:00
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static ssize_t in_min_store(struct device *dev, struct device_attribute *da,
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const char *buf, size_t count)
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2005-04-17 06:20:36 +08:00
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{
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2007-05-08 23:22:01 +08:00
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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2007-05-08 23:22:00 +08:00
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struct lm78_data *data = dev_get_drvdata(dev);
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2007-05-08 23:22:01 +08:00
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int nr = attr->index;
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2012-01-15 12:39:24 +08:00
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
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2005-04-17 06:20:36 +08:00
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2006-01-19 06:19:26 +08:00
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mutex_lock(&data->update_lock);
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2005-04-17 06:20:36 +08:00
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data->in_min[nr] = IN_TO_REG(val);
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2007-05-08 23:22:01 +08:00
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lm78_write_value(data, LM78_REG_IN_MIN(nr), data->in_min[nr]);
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2006-01-19 06:19:26 +08:00
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mutex_unlock(&data->update_lock);
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2005-04-17 06:20:36 +08:00
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return count;
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}
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2019-01-23 02:07:16 +08:00
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static ssize_t in_max_store(struct device *dev, struct device_attribute *da,
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const char *buf, size_t count)
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2005-04-17 06:20:36 +08:00
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{
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2007-05-08 23:22:01 +08:00
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
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2007-05-08 23:22:00 +08:00
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struct lm78_data *data = dev_get_drvdata(dev);
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2007-05-08 23:22:01 +08:00
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int nr = attr->index;
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2012-01-15 12:39:24 +08:00
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err)
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return err;
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2005-04-17 06:20:36 +08:00
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2006-01-19 06:19:26 +08:00
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mutex_lock(&data->update_lock);
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2005-04-17 06:20:36 +08:00
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data->in_max[nr] = IN_TO_REG(val);
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2007-05-08 23:22:01 +08:00
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lm78_write_value(data, LM78_REG_IN_MAX(nr), data->in_max[nr]);
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2006-01-19 06:19:26 +08:00
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mutex_unlock(&data->update_lock);
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2005-04-17 06:20:36 +08:00
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return count;
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}
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2012-01-15 12:39:24 +08:00
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2019-01-23 02:07:16 +08:00
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static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0);
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static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0);
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static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0);
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static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1);
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static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1);
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static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1);
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static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2);
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static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2);
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static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2);
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static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3);
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static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3);
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static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3);
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static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4);
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static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4);
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static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4);
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static SENSOR_DEVICE_ATTR_RO(in5_input, in, 5);
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static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5);
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static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5);
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static SENSOR_DEVICE_ATTR_RO(in6_input, in, 6);
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static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6);
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static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6);
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2005-04-17 06:20:36 +08:00
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/* Temperature */
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2016-12-22 20:05:25 +08:00
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static ssize_t temp1_input_show(struct device *dev,
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struct device_attribute *da, char *buf)
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2005-04-17 06:20:36 +08:00
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{
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struct lm78_data *data = lm78_update_device(dev);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
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}
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2016-12-22 20:05:25 +08:00
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static ssize_t temp1_max_show(struct device *dev, struct device_attribute *da,
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2007-05-08 23:22:01 +08:00
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char *buf)
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2005-04-17 06:20:36 +08:00
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{
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struct lm78_data *data = lm78_update_device(dev);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
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}
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2016-12-22 20:05:25 +08:00
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static ssize_t temp1_max_store(struct device *dev,
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struct device_attribute *da, const char *buf,
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size_t count)
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2005-04-17 06:20:36 +08:00
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{
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2007-05-08 23:22:00 +08:00
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struct lm78_data *data = dev_get_drvdata(dev);
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2012-01-15 12:39:24 +08:00
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long val;
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int err;
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err = kstrtol(buf, 10, &val);
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if (err)
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return err;
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2005-04-17 06:20:36 +08:00
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2006-01-19 06:19:26 +08:00
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mutex_lock(&data->update_lock);
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2005-04-17 06:20:36 +08:00
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data->temp_over = TEMP_TO_REG(val);
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2007-05-08 23:22:01 +08:00
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lm78_write_value(data, LM78_REG_TEMP_OVER, data->temp_over);
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2006-01-19 06:19:26 +08:00
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mutex_unlock(&data->update_lock);
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2005-04-17 06:20:36 +08:00
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2016-12-22 20:05:25 +08:00
|
|
|
static ssize_t temp1_max_hyst_show(struct device *dev,
|
|
|
|
struct device_attribute *da, char *buf)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
struct lm78_data *data = lm78_update_device(dev);
|
|
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst));
|
|
|
|
}
|
|
|
|
|
2016-12-22 20:05:25 +08:00
|
|
|
static ssize_t temp1_max_hyst_store(struct device *dev,
|
|
|
|
struct device_attribute *da,
|
|
|
|
const char *buf, size_t count)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2007-05-08 23:22:00 +08:00
|
|
|
struct lm78_data *data = dev_get_drvdata(dev);
|
2012-01-15 12:39:24 +08:00
|
|
|
long val;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
|
|
if (err)
|
|
|
|
return err;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_lock(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
data->temp_hyst = TEMP_TO_REG(val);
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_write_value(data, LM78_REG_TEMP_HYST, data->temp_hyst);
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_unlock(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2016-12-22 20:05:25 +08:00
|
|
|
static DEVICE_ATTR_RO(temp1_input);
|
|
|
|
static DEVICE_ATTR_RW(temp1_max);
|
|
|
|
static DEVICE_ATTR_RW(temp1_max_hyst);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* 3 Fans */
|
2019-01-23 02:07:16 +08:00
|
|
|
static ssize_t fan_show(struct device *dev, struct device_attribute *da,
|
2007-05-08 23:22:01 +08:00
|
|
|
char *buf)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2007-05-08 23:22:01 +08:00
|
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
|
2005-04-17 06:20:36 +08:00
|
|
|
struct lm78_data *data = lm78_update_device(dev);
|
2007-05-08 23:22:01 +08:00
|
|
|
int nr = attr->index;
|
2005-04-17 06:20:36 +08:00
|
|
|
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
|
2012-01-15 12:39:24 +08:00
|
|
|
DIV_FROM_REG(data->fan_div[nr])));
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2019-01-23 02:07:16 +08:00
|
|
|
static ssize_t fan_min_show(struct device *dev, struct device_attribute *da,
|
2007-05-08 23:22:01 +08:00
|
|
|
char *buf)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2007-05-08 23:22:01 +08:00
|
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
|
2005-04-17 06:20:36 +08:00
|
|
|
struct lm78_data *data = lm78_update_device(dev);
|
2007-05-08 23:22:01 +08:00
|
|
|
int nr = attr->index;
|
2012-01-15 12:39:24 +08:00
|
|
|
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
|
|
|
|
DIV_FROM_REG(data->fan_div[nr])));
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2019-01-23 02:07:16 +08:00
|
|
|
static ssize_t fan_min_store(struct device *dev, struct device_attribute *da,
|
|
|
|
const char *buf, size_t count)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2007-05-08 23:22:01 +08:00
|
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
|
2007-05-08 23:22:00 +08:00
|
|
|
struct lm78_data *data = dev_get_drvdata(dev);
|
2007-05-08 23:22:01 +08:00
|
|
|
int nr = attr->index;
|
2012-01-15 12:39:24 +08:00
|
|
|
unsigned long val;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
|
|
if (err)
|
|
|
|
return err;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_lock(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_write_value(data, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_unlock(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2019-01-23 02:07:16 +08:00
|
|
|
static ssize_t fan_div_show(struct device *dev, struct device_attribute *da,
|
2007-05-08 23:22:01 +08:00
|
|
|
char *buf)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2007-05-08 23:22:01 +08:00
|
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
|
2005-04-17 06:20:36 +08:00
|
|
|
struct lm78_data *data = lm78_update_device(dev);
|
2007-05-08 23:22:01 +08:00
|
|
|
return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[attr->index]));
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2012-01-15 12:39:24 +08:00
|
|
|
/*
|
|
|
|
* Note: we save and restore the fan minimum here, because its value is
|
|
|
|
* determined in part by the fan divisor. This follows the principle of
|
|
|
|
* least surprise; the user doesn't expect the fan minimum to change just
|
|
|
|
* because the divisor changed.
|
|
|
|
*/
|
2019-01-23 02:07:16 +08:00
|
|
|
static ssize_t fan_div_store(struct device *dev, struct device_attribute *da,
|
|
|
|
const char *buf, size_t count)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2007-05-08 23:22:01 +08:00
|
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
|
2007-05-08 23:22:00 +08:00
|
|
|
struct lm78_data *data = dev_get_drvdata(dev);
|
2007-05-08 23:22:01 +08:00
|
|
|
int nr = attr->index;
|
2005-04-17 06:20:36 +08:00
|
|
|
unsigned long min;
|
|
|
|
u8 reg;
|
2012-01-15 12:39:24 +08:00
|
|
|
unsigned long val;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
|
|
if (err)
|
|
|
|
return err;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_lock(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
min = FAN_FROM_REG(data->fan_min[nr],
|
|
|
|
DIV_FROM_REG(data->fan_div[nr]));
|
|
|
|
|
|
|
|
switch (val) {
|
2012-01-15 12:39:24 +08:00
|
|
|
case 1:
|
|
|
|
data->fan_div[nr] = 0;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
data->fan_div[nr] = 1;
|
|
|
|
break;
|
|
|
|
case 4:
|
|
|
|
data->fan_div[nr] = 2;
|
|
|
|
break;
|
|
|
|
case 8:
|
|
|
|
data->fan_div[nr] = 3;
|
|
|
|
break;
|
2005-04-17 06:20:36 +08:00
|
|
|
default:
|
2013-01-11 02:01:24 +08:00
|
|
|
dev_err(dev,
|
|
|
|
"fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n",
|
|
|
|
val);
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_unlock(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2007-05-08 23:22:01 +08:00
|
|
|
reg = lm78_read_value(data, LM78_REG_VID_FANDIV);
|
2005-04-17 06:20:36 +08:00
|
|
|
switch (nr) {
|
|
|
|
case 0:
|
|
|
|
reg = (reg & 0xcf) | (data->fan_div[nr] << 4);
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
|
|
|
|
break;
|
|
|
|
}
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_write_value(data, LM78_REG_VID_FANDIV, reg);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
data->fan_min[nr] =
|
|
|
|
FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_write_value(data, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_unlock(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
2019-01-23 02:07:16 +08:00
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0);
|
|
|
|
static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1);
|
|
|
|
static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 2);
|
|
|
|
static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Fan 3 divisor is locked in H/W */
|
2019-01-23 02:07:16 +08:00
|
|
|
static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);
|
|
|
|
static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan3_div, fan_div, 2);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* VID */
|
2016-12-22 20:05:25 +08:00
|
|
|
static ssize_t cpu0_vid_show(struct device *dev, struct device_attribute *da,
|
|
|
|
char *buf)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
struct lm78_data *data = lm78_update_device(dev);
|
2005-11-24 07:44:26 +08:00
|
|
|
return sprintf(buf, "%d\n", vid_from_reg(data->vid, 82));
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2016-12-22 20:05:25 +08:00
|
|
|
static DEVICE_ATTR_RO(cpu0_vid);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Alarms */
|
2016-12-22 20:05:25 +08:00
|
|
|
static ssize_t alarms_show(struct device *dev, struct device_attribute *da,
|
2007-05-08 23:22:01 +08:00
|
|
|
char *buf)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
struct lm78_data *data = lm78_update_device(dev);
|
|
|
|
return sprintf(buf, "%u\n", data->alarms);
|
|
|
|
}
|
2016-12-22 20:05:25 +08:00
|
|
|
static DEVICE_ATTR_RO(alarms);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2019-01-23 02:07:16 +08:00
|
|
|
static ssize_t alarm_show(struct device *dev, struct device_attribute *da,
|
2007-09-05 05:25:33 +08:00
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct lm78_data *data = lm78_update_device(dev);
|
|
|
|
int nr = to_sensor_dev_attr(da)->index;
|
|
|
|
return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
|
|
|
|
}
|
2019-01-23 02:07:16 +08:00
|
|
|
static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 8);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 9);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 10);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan3_alarm, alarm, 11);
|
|
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4);
|
2007-09-05 05:25:33 +08:00
|
|
|
|
2014-07-23 12:39:21 +08:00
|
|
|
static struct attribute *lm78_attrs[] = {
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_in0_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in0_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in0_max.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_in0_alarm.dev_attr.attr,
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_in1_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in1_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in1_max.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_in1_alarm.dev_attr.attr,
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_in2_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in2_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in2_max.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_in2_alarm.dev_attr.attr,
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_in3_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in3_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in3_max.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_in3_alarm.dev_attr.attr,
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_in4_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in4_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in4_max.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_in4_alarm.dev_attr.attr,
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_in5_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in5_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in5_max.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_in5_alarm.dev_attr.attr,
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_in6_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in6_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in6_max.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_in6_alarm.dev_attr.attr,
|
2006-09-25 02:59:49 +08:00
|
|
|
&dev_attr_temp1_input.attr,
|
|
|
|
&dev_attr_temp1_max.attr,
|
|
|
|
&dev_attr_temp1_max_hyst.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan1_div.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan2_div.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
|
2007-05-08 23:22:01 +08:00
|
|
|
&sensor_dev_attr_fan3_input.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan3_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan3_div.dev_attr.attr,
|
2007-09-05 05:25:33 +08:00
|
|
|
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
|
2006-09-25 02:59:49 +08:00
|
|
|
&dev_attr_alarms.attr,
|
|
|
|
&dev_attr_cpu0_vid.attr,
|
|
|
|
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
2014-07-23 12:39:21 +08:00
|
|
|
ATTRIBUTE_GROUPS(lm78);
|
2006-09-25 02:59:49 +08:00
|
|
|
|
2011-07-26 03:46:11 +08:00
|
|
|
/*
|
|
|
|
* ISA related code
|
|
|
|
*/
|
|
|
|
#ifdef CONFIG_ISA
|
|
|
|
|
|
|
|
/* ISA device, if found */
|
|
|
|
static struct platform_device *pdev;
|
|
|
|
|
|
|
|
static unsigned short isa_address = 0x290;
|
|
|
|
|
|
|
|
static struct lm78_data *lm78_data_if_isa(void)
|
|
|
|
{
|
|
|
|
return pdev ? platform_get_drvdata(pdev) : NULL;
|
|
|
|
}
|
|
|
|
|
2008-10-17 23:51:15 +08:00
|
|
|
/* Returns 1 if the I2C chip appears to be an alias of the ISA chip */
|
|
|
|
static int lm78_alias_detect(struct i2c_client *client, u8 chipid)
|
|
|
|
{
|
2008-10-17 23:51:16 +08:00
|
|
|
struct lm78_data *isa;
|
2008-10-17 23:51:15 +08:00
|
|
|
int i;
|
|
|
|
|
|
|
|
if (!pdev) /* No ISA chip */
|
|
|
|
return 0;
|
|
|
|
isa = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
if (lm78_read_value(isa, LM78_REG_I2C_ADDR) != client->addr)
|
|
|
|
return 0; /* Address doesn't match */
|
|
|
|
if ((lm78_read_value(isa, LM78_REG_CHIPID) & 0xfe) != (chipid & 0xfe))
|
|
|
|
return 0; /* Chip type doesn't match */
|
|
|
|
|
2012-01-15 12:39:24 +08:00
|
|
|
/*
|
|
|
|
* We compare all the limit registers, the config register and the
|
|
|
|
* interrupt mask registers
|
|
|
|
*/
|
2008-10-17 23:51:15 +08:00
|
|
|
for (i = 0x2b; i <= 0x3d; i++) {
|
2008-10-17 23:51:16 +08:00
|
|
|
if (lm78_read_value(isa, i) !=
|
|
|
|
i2c_smbus_read_byte_data(client, i))
|
2008-10-17 23:51:15 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (lm78_read_value(isa, LM78_REG_CONFIG) !=
|
2008-10-17 23:51:16 +08:00
|
|
|
i2c_smbus_read_byte_data(client, LM78_REG_CONFIG))
|
2008-10-17 23:51:15 +08:00
|
|
|
return 0;
|
|
|
|
for (i = 0x43; i <= 0x46; i++) {
|
2008-10-17 23:51:16 +08:00
|
|
|
if (lm78_read_value(isa, i) !=
|
|
|
|
i2c_smbus_read_byte_data(client, i))
|
2008-10-17 23:51:15 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
2011-07-26 03:46:11 +08:00
|
|
|
#else /* !CONFIG_ISA */
|
|
|
|
|
|
|
|
static int lm78_alias_detect(struct i2c_client *client, u8 chipid)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct lm78_data *lm78_data_if_isa(void)
|
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
#endif /* CONFIG_ISA */
|
2008-10-17 23:51:15 +08:00
|
|
|
|
2009-12-15 04:17:23 +08:00
|
|
|
static int lm78_i2c_detect(struct i2c_client *client,
|
2008-10-17 23:51:16 +08:00
|
|
|
struct i2c_board_info *info)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2008-10-17 23:51:16 +08:00
|
|
|
int i;
|
2011-07-26 03:46:11 +08:00
|
|
|
struct lm78_data *isa = lm78_data_if_isa();
|
2008-10-17 23:51:16 +08:00
|
|
|
const char *client_name;
|
|
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
|
|
int address = client->addr;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2008-10-17 23:51:16 +08:00
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
|
|
return -ENODEV;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2012-01-15 12:39:24 +08:00
|
|
|
/*
|
|
|
|
* We block updates of the ISA device to minimize the risk of
|
|
|
|
* concurrent access to the same LM78 chip through different
|
|
|
|
* interfaces.
|
|
|
|
*/
|
2008-10-17 23:51:16 +08:00
|
|
|
if (isa)
|
|
|
|
mutex_lock(&isa->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2009-12-10 03:35:57 +08:00
|
|
|
if ((i2c_smbus_read_byte_data(client, LM78_REG_CONFIG) & 0x80)
|
|
|
|
|| i2c_smbus_read_byte_data(client, LM78_REG_I2C_ADDR) != address)
|
|
|
|
goto err_nodev;
|
|
|
|
|
|
|
|
/* Explicitly prevent the misdetection of Winbond chips */
|
|
|
|
i = i2c_smbus_read_byte_data(client, 0x4f);
|
|
|
|
if (i == 0xa3 || i == 0x5c)
|
|
|
|
goto err_nodev;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Determine the chip type. */
|
2009-12-10 03:35:57 +08:00
|
|
|
i = i2c_smbus_read_byte_data(client, LM78_REG_CHIPID);
|
|
|
|
if (i == 0x00 || i == 0x20 /* LM78 */
|
|
|
|
|| i == 0x40) /* LM78-J */
|
|
|
|
client_name = "lm78";
|
|
|
|
else if ((i & 0xfe) == 0xc0)
|
|
|
|
client_name = "lm79";
|
|
|
|
else
|
|
|
|
goto err_nodev;
|
|
|
|
|
|
|
|
if (lm78_alias_detect(client, i)) {
|
2013-01-11 02:01:24 +08:00
|
|
|
dev_dbg(&adapter->dev,
|
|
|
|
"Device at 0x%02x appears to be the same as ISA device\n",
|
|
|
|
address);
|
2009-12-10 03:35:57 +08:00
|
|
|
goto err_nodev;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2008-10-17 23:51:16 +08:00
|
|
|
if (isa)
|
|
|
|
mutex_unlock(&isa->update_lock);
|
|
|
|
|
|
|
|
strlcpy(info->type, client_name, I2C_NAME_SIZE);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2008-10-17 23:51:16 +08:00
|
|
|
return 0;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2008-10-17 23:51:16 +08:00
|
|
|
err_nodev:
|
|
|
|
if (isa)
|
|
|
|
mutex_unlock(&isa->update_lock);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int lm78_i2c_probe(struct i2c_client *client,
|
|
|
|
const struct i2c_device_id *id)
|
|
|
|
{
|
2014-07-23 12:39:21 +08:00
|
|
|
struct device *dev = &client->dev;
|
|
|
|
struct device *hwmon_dev;
|
2008-10-17 23:51:16 +08:00
|
|
|
struct lm78_data *data;
|
|
|
|
|
2014-07-23 12:39:21 +08:00
|
|
|
data = devm_kzalloc(dev, sizeof(struct lm78_data), GFP_KERNEL);
|
2008-10-17 23:51:16 +08:00
|
|
|
if (!data)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
data->client = client;
|
|
|
|
data->type = id->driver_data;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Initialize the LM78 chip */
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_init_device(data);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2014-07-23 12:39:21 +08:00
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
|
|
|
|
data, lm78_groups);
|
|
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
2007-05-08 23:22:00 +08:00
|
|
|
}
|
|
|
|
|
2011-07-26 03:46:11 +08:00
|
|
|
static const struct i2c_device_id lm78_i2c_id[] = {
|
|
|
|
{ "lm78", lm78 },
|
|
|
|
{ "lm79", lm79 },
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, lm78_i2c_id);
|
2008-10-17 23:51:15 +08:00
|
|
|
|
2011-07-26 03:46:11 +08:00
|
|
|
static struct i2c_driver lm78_driver = {
|
|
|
|
.class = I2C_CLASS_HWMON,
|
|
|
|
.driver = {
|
|
|
|
.name = "lm78",
|
|
|
|
},
|
|
|
|
.probe = lm78_i2c_probe,
|
|
|
|
.id_table = lm78_i2c_id,
|
|
|
|
.detect = lm78_i2c_detect,
|
|
|
|
.address_list = normal_i2c,
|
|
|
|
};
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2012-01-15 12:39:24 +08:00
|
|
|
/*
|
|
|
|
* The SMBus locks itself, but ISA access must be locked explicitly!
|
|
|
|
* We don't want to lock the whole ISA bus, so we lock each client
|
|
|
|
* separately.
|
|
|
|
* We ignore the LM78 BUSY flag at this moment - it could lead to deadlocks,
|
|
|
|
* would slow down the LM78 access and should not be necessary.
|
|
|
|
*/
|
2007-05-08 23:22:01 +08:00
|
|
|
static int lm78_read_value(struct lm78_data *data, u8 reg)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2008-10-17 23:51:16 +08:00
|
|
|
struct i2c_client *client = data->client;
|
2007-05-08 23:22:01 +08:00
|
|
|
|
2011-07-26 03:46:11 +08:00
|
|
|
#ifdef CONFIG_ISA
|
2008-10-17 23:51:16 +08:00
|
|
|
if (!client) { /* ISA device */
|
2007-05-08 23:22:01 +08:00
|
|
|
int res;
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_lock(&data->lock);
|
2008-10-17 23:51:15 +08:00
|
|
|
outb_p(reg, data->isa_addr + LM78_ADDR_REG_OFFSET);
|
|
|
|
res = inb_p(data->isa_addr + LM78_DATA_REG_OFFSET);
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_unlock(&data->lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
return res;
|
|
|
|
} else
|
2011-07-26 03:46:11 +08:00
|
|
|
#endif
|
2005-04-17 06:20:36 +08:00
|
|
|
return i2c_smbus_read_byte_data(client, reg);
|
|
|
|
}
|
|
|
|
|
2007-05-08 23:22:01 +08:00
|
|
|
static int lm78_write_value(struct lm78_data *data, u8 reg, u8 value)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2008-10-17 23:51:16 +08:00
|
|
|
struct i2c_client *client = data->client;
|
2007-05-08 23:22:01 +08:00
|
|
|
|
2011-07-26 03:46:11 +08:00
|
|
|
#ifdef CONFIG_ISA
|
2008-10-17 23:51:16 +08:00
|
|
|
if (!client) { /* ISA device */
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_lock(&data->lock);
|
2008-10-17 23:51:15 +08:00
|
|
|
outb_p(reg, data->isa_addr + LM78_ADDR_REG_OFFSET);
|
|
|
|
outb_p(value, data->isa_addr + LM78_DATA_REG_OFFSET);
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_unlock(&data->lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
return 0;
|
|
|
|
} else
|
2011-07-26 03:46:11 +08:00
|
|
|
#endif
|
2005-04-17 06:20:36 +08:00
|
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
|
|
|
}
|
|
|
|
|
2007-05-08 23:22:01 +08:00
|
|
|
static void lm78_init_device(struct lm78_data *data)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2007-05-08 23:22:00 +08:00
|
|
|
u8 config;
|
|
|
|
int i;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
/* Start monitoring */
|
2007-05-08 23:22:01 +08:00
|
|
|
config = lm78_read_value(data, LM78_REG_CONFIG);
|
2007-05-08 23:22:00 +08:00
|
|
|
if ((config & 0x09) != 0x01)
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_write_value(data, LM78_REG_CONFIG,
|
2005-04-17 06:20:36 +08:00
|
|
|
(config & 0xf7) | 0x01);
|
2007-05-08 23:22:00 +08:00
|
|
|
|
|
|
|
/* A few vars need to be filled upon startup */
|
|
|
|
for (i = 0; i < 3; i++) {
|
2007-05-08 23:22:01 +08:00
|
|
|
data->fan_min[i] = lm78_read_value(data,
|
2007-05-08 23:22:00 +08:00
|
|
|
LM78_REG_FAN_MIN(i));
|
|
|
|
}
|
|
|
|
|
|
|
|
mutex_init(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct lm78_data *lm78_update_device(struct device *dev)
|
|
|
|
{
|
2007-05-08 23:22:00 +08:00
|
|
|
struct lm78_data *data = dev_get_drvdata(dev);
|
2005-04-17 06:20:36 +08:00
|
|
|
int i;
|
|
|
|
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_lock(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|
|
|
|
|| !data->valid) {
|
|
|
|
|
2007-05-08 23:22:00 +08:00
|
|
|
dev_dbg(dev, "Starting lm78 update\n");
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
for (i = 0; i <= 6; i++) {
|
|
|
|
data->in[i] =
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_read_value(data, LM78_REG_IN(i));
|
2005-04-17 06:20:36 +08:00
|
|
|
data->in_min[i] =
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_read_value(data, LM78_REG_IN_MIN(i));
|
2005-04-17 06:20:36 +08:00
|
|
|
data->in_max[i] =
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_read_value(data, LM78_REG_IN_MAX(i));
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
|
|
data->fan[i] =
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_read_value(data, LM78_REG_FAN(i));
|
2005-04-17 06:20:36 +08:00
|
|
|
data->fan_min[i] =
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_read_value(data, LM78_REG_FAN_MIN(i));
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
2007-05-08 23:22:01 +08:00
|
|
|
data->temp = lm78_read_value(data, LM78_REG_TEMP);
|
2005-04-17 06:20:36 +08:00
|
|
|
data->temp_over =
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_read_value(data, LM78_REG_TEMP_OVER);
|
2005-04-17 06:20:36 +08:00
|
|
|
data->temp_hyst =
|
2007-05-08 23:22:01 +08:00
|
|
|
lm78_read_value(data, LM78_REG_TEMP_HYST);
|
|
|
|
i = lm78_read_value(data, LM78_REG_VID_FANDIV);
|
2005-04-17 06:20:36 +08:00
|
|
|
data->vid = i & 0x0f;
|
|
|
|
if (data->type == lm79)
|
|
|
|
data->vid |=
|
2007-05-08 23:22:01 +08:00
|
|
|
(lm78_read_value(data, LM78_REG_CHIPID) &
|
2005-04-17 06:20:36 +08:00
|
|
|
0x01) << 4;
|
|
|
|
else
|
|
|
|
data->vid |= 0x10;
|
|
|
|
data->fan_div[0] = (i >> 4) & 0x03;
|
|
|
|
data->fan_div[1] = i >> 6;
|
2007-05-08 23:22:01 +08:00
|
|
|
data->alarms = lm78_read_value(data, LM78_REG_ALARM1) +
|
|
|
|
(lm78_read_value(data, LM78_REG_ALARM2) << 8);
|
2005-04-17 06:20:36 +08:00
|
|
|
data->last_updated = jiffies;
|
|
|
|
data->valid = 1;
|
|
|
|
|
|
|
|
data->fan_div[2] = 1;
|
|
|
|
}
|
|
|
|
|
2006-01-19 06:19:26 +08:00
|
|
|
mutex_unlock(&data->update_lock);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
return data;
|
|
|
|
}
|
|
|
|
|
2011-07-26 03:46:11 +08:00
|
|
|
#ifdef CONFIG_ISA
|
2012-11-20 02:22:35 +08:00
|
|
|
static int lm78_isa_probe(struct platform_device *pdev)
|
2011-07-26 03:46:11 +08:00
|
|
|
{
|
2014-07-23 12:39:21 +08:00
|
|
|
struct device *dev = &pdev->dev;
|
|
|
|
struct device *hwmon_dev;
|
2011-07-26 03:46:11 +08:00
|
|
|
struct lm78_data *data;
|
|
|
|
struct resource *res;
|
|
|
|
|
|
|
|
/* Reserve the ISA region */
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
2014-07-23 12:39:21 +08:00
|
|
|
if (!devm_request_region(dev, res->start + LM78_ADDR_REG_OFFSET,
|
2012-06-03 00:58:09 +08:00
|
|
|
2, "lm78"))
|
|
|
|
return -EBUSY;
|
|
|
|
|
2014-07-23 12:39:21 +08:00
|
|
|
data = devm_kzalloc(dev, sizeof(struct lm78_data), GFP_KERNEL);
|
2012-06-03 00:58:09 +08:00
|
|
|
if (!data)
|
|
|
|
return -ENOMEM;
|
2011-07-26 03:46:11 +08:00
|
|
|
|
|
|
|
mutex_init(&data->lock);
|
|
|
|
data->isa_addr = res->start;
|
|
|
|
platform_set_drvdata(pdev, data);
|
|
|
|
|
|
|
|
if (lm78_read_value(data, LM78_REG_CHIPID) & 0x80) {
|
|
|
|
data->type = lm79;
|
|
|
|
data->name = "lm79";
|
|
|
|
} else {
|
|
|
|
data->type = lm78;
|
|
|
|
data->name = "lm78";
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Initialize the LM78 chip */
|
|
|
|
lm78_init_device(data);
|
|
|
|
|
2014-07-23 12:39:21 +08:00
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(dev, data->name,
|
|
|
|
data, lm78_groups);
|
|
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
2011-07-26 03:46:11 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver lm78_isa_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "lm78",
|
|
|
|
},
|
|
|
|
.probe = lm78_isa_probe,
|
|
|
|
};
|
|
|
|
|
2007-05-08 23:22:00 +08:00
|
|
|
/* return 1 if a supported chip is found, 0 otherwise */
|
|
|
|
static int __init lm78_isa_found(unsigned short address)
|
|
|
|
{
|
|
|
|
int val, save, found = 0;
|
2010-02-06 02:58:36 +08:00
|
|
|
int port;
|
|
|
|
|
2012-01-15 12:39:24 +08:00
|
|
|
/*
|
|
|
|
* Some boards declare base+0 to base+7 as a PNP device, some base+4
|
2010-02-06 02:58:36 +08:00
|
|
|
* to base+7 and some base+5 to base+6. So we better request each port
|
2012-01-15 12:39:24 +08:00
|
|
|
* individually for the probing phase.
|
|
|
|
*/
|
2010-02-06 02:58:36 +08:00
|
|
|
for (port = address; port < address + LM78_EXTENT; port++) {
|
|
|
|
if (!request_region(port, 1, "lm78")) {
|
2011-01-13 04:55:10 +08:00
|
|
|
pr_debug("Failed to request port 0x%x\n", port);
|
2010-02-06 02:58:36 +08:00
|
|
|
goto release;
|
|
|
|
}
|
2008-10-17 23:51:15 +08:00
|
|
|
}
|
2007-05-08 23:22:00 +08:00
|
|
|
|
|
|
|
#define REALLY_SLOW_IO
|
2012-01-15 12:39:24 +08:00
|
|
|
/*
|
|
|
|
* We need the timeouts for at least some LM78-like
|
|
|
|
* chips. But only if we read 'undefined' registers.
|
|
|
|
*/
|
2007-05-08 23:22:00 +08:00
|
|
|
val = inb_p(address + 1);
|
|
|
|
if (inb_p(address + 2) != val
|
|
|
|
|| inb_p(address + 3) != val
|
|
|
|
|| inb_p(address + 7) != val)
|
|
|
|
goto release;
|
|
|
|
#undef REALLY_SLOW_IO
|
|
|
|
|
2012-01-15 12:39:24 +08:00
|
|
|
/*
|
|
|
|
* We should be able to change the 7 LSB of the address port. The
|
|
|
|
* MSB (busy flag) should be clear initially, set after the write.
|
|
|
|
*/
|
2007-05-08 23:22:00 +08:00
|
|
|
save = inb_p(address + LM78_ADDR_REG_OFFSET);
|
|
|
|
if (save & 0x80)
|
|
|
|
goto release;
|
|
|
|
val = ~save & 0x7f;
|
|
|
|
outb_p(val, address + LM78_ADDR_REG_OFFSET);
|
|
|
|
if (inb_p(address + LM78_ADDR_REG_OFFSET) != (val | 0x80)) {
|
|
|
|
outb_p(save, address + LM78_ADDR_REG_OFFSET);
|
|
|
|
goto release;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* We found a device, now see if it could be an LM78 */
|
|
|
|
outb_p(LM78_REG_CONFIG, address + LM78_ADDR_REG_OFFSET);
|
|
|
|
val = inb_p(address + LM78_DATA_REG_OFFSET);
|
|
|
|
if (val & 0x80)
|
|
|
|
goto release;
|
|
|
|
outb_p(LM78_REG_I2C_ADDR, address + LM78_ADDR_REG_OFFSET);
|
|
|
|
val = inb_p(address + LM78_DATA_REG_OFFSET);
|
|
|
|
if (val < 0x03 || val > 0x77) /* Not a valid I2C address */
|
|
|
|
goto release;
|
|
|
|
|
|
|
|
/* The busy flag should be clear again */
|
|
|
|
if (inb_p(address + LM78_ADDR_REG_OFFSET) & 0x80)
|
|
|
|
goto release;
|
|
|
|
|
|
|
|
/* Explicitly prevent the misdetection of Winbond chips */
|
|
|
|
outb_p(0x4f, address + LM78_ADDR_REG_OFFSET);
|
|
|
|
val = inb_p(address + LM78_DATA_REG_OFFSET);
|
|
|
|
if (val == 0xa3 || val == 0x5c)
|
|
|
|
goto release;
|
|
|
|
|
|
|
|
/* Explicitly prevent the misdetection of ITE chips */
|
|
|
|
outb_p(0x58, address + LM78_ADDR_REG_OFFSET);
|
|
|
|
val = inb_p(address + LM78_DATA_REG_OFFSET);
|
|
|
|
if (val == 0x90)
|
|
|
|
goto release;
|
|
|
|
|
|
|
|
/* Determine the chip type */
|
|
|
|
outb_p(LM78_REG_CHIPID, address + LM78_ADDR_REG_OFFSET);
|
|
|
|
val = inb_p(address + LM78_DATA_REG_OFFSET);
|
2007-07-25 05:36:00 +08:00
|
|
|
if (val == 0x00 || val == 0x20 /* LM78 */
|
2007-05-08 23:22:00 +08:00
|
|
|
|| val == 0x40 /* LM78-J */
|
|
|
|
|| (val & 0xfe) == 0xc0) /* LM79 */
|
|
|
|
found = 1;
|
|
|
|
|
|
|
|
if (found)
|
2011-01-13 04:55:10 +08:00
|
|
|
pr_info("Found an %s chip at %#x\n",
|
2007-05-08 23:22:00 +08:00
|
|
|
val & 0x80 ? "LM79" : "LM78", (int)address);
|
|
|
|
|
|
|
|
release:
|
2010-02-06 02:58:36 +08:00
|
|
|
for (port--; port >= address; port--)
|
|
|
|
release_region(port, 1);
|
2007-05-08 23:22:00 +08:00
|
|
|
return found;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init lm78_isa_device_add(unsigned short address)
|
|
|
|
{
|
|
|
|
struct resource res = {
|
|
|
|
.start = address,
|
2007-08-29 16:39:57 +08:00
|
|
|
.end = address + LM78_EXTENT - 1,
|
2007-05-08 23:22:00 +08:00
|
|
|
.name = "lm78",
|
|
|
|
.flags = IORESOURCE_IO,
|
|
|
|
};
|
|
|
|
int err;
|
|
|
|
|
|
|
|
pdev = platform_device_alloc("lm78", address);
|
|
|
|
if (!pdev) {
|
|
|
|
err = -ENOMEM;
|
2011-01-13 04:55:10 +08:00
|
|
|
pr_err("Device allocation failed\n");
|
2007-05-08 23:22:00 +08:00
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = platform_device_add_resources(pdev, &res, 1);
|
|
|
|
if (err) {
|
2011-01-13 04:55:10 +08:00
|
|
|
pr_err("Device resource addition failed (%d)\n", err);
|
2007-05-08 23:22:00 +08:00
|
|
|
goto exit_device_put;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = platform_device_add(pdev);
|
|
|
|
if (err) {
|
2011-01-13 04:55:10 +08:00
|
|
|
pr_err("Device addition failed (%d)\n", err);
|
2007-05-08 23:22:00 +08:00
|
|
|
goto exit_device_put;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
exit_device_put:
|
|
|
|
platform_device_put(pdev);
|
|
|
|
exit:
|
|
|
|
pdev = NULL;
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2011-07-26 03:46:11 +08:00
|
|
|
static int __init lm78_isa_register(void)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
[PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (3/9)
Convert the 10 ISA hardware monitoring drivers (it87, lm78, pc87360,
sis5595, smsc47b397, smsc47m1, via686a, w83627hf, w83627ehf, w83781d) to
explicitely register with i2c-isa. For hybrid drivers (it87, lm78,
w83781d), we now have two separate instances of i2c_driver, one for the
I2C interface of the chip, and one for ISA interface. In the long run,
the one for ISA will be replaced with a different driver type.
At this point, all drivers are working again, except for missing
dependencies in Kconfig.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-20 05:51:07 +08:00
|
|
|
int res;
|
|
|
|
|
2007-05-08 23:22:00 +08:00
|
|
|
if (lm78_isa_found(isa_address)) {
|
|
|
|
res = platform_driver_register(&lm78_isa_driver);
|
|
|
|
if (res)
|
2008-10-17 23:51:15 +08:00
|
|
|
goto exit;
|
[PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (3/9)
Convert the 10 ISA hardware monitoring drivers (it87, lm78, pc87360,
sis5595, smsc47b397, smsc47m1, via686a, w83627hf, w83627ehf, w83781d) to
explicitely register with i2c-isa. For hybrid drivers (it87, lm78,
w83781d), we now have two separate instances of i2c_driver, one for the
I2C interface of the chip, and one for ISA interface. In the long run,
the one for ISA will be replaced with a different driver type.
At this point, all drivers are working again, except for missing
dependencies in Kconfig.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-20 05:51:07 +08:00
|
|
|
|
2007-05-08 23:22:00 +08:00
|
|
|
/* Sets global pdev as a side effect */
|
|
|
|
res = lm78_isa_device_add(isa_address);
|
|
|
|
if (res)
|
|
|
|
goto exit_unreg_isa_driver;
|
|
|
|
}
|
[PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (3/9)
Convert the 10 ISA hardware monitoring drivers (it87, lm78, pc87360,
sis5595, smsc47b397, smsc47m1, via686a, w83627hf, w83627ehf, w83781d) to
explicitely register with i2c-isa. For hybrid drivers (it87, lm78,
w83781d), we now have two separate instances of i2c_driver, one for the
I2C interface of the chip, and one for ISA interface. In the long run,
the one for ISA will be replaced with a different driver type.
At this point, all drivers are working again, except for missing
dependencies in Kconfig.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-20 05:51:07 +08:00
|
|
|
|
|
|
|
return 0;
|
2007-05-08 23:22:00 +08:00
|
|
|
|
|
|
|
exit_unreg_isa_driver:
|
|
|
|
platform_driver_unregister(&lm78_isa_driver);
|
|
|
|
exit:
|
|
|
|
return res;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
2011-07-26 03:46:11 +08:00
|
|
|
static void lm78_isa_unregister(void)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
2007-05-08 23:22:00 +08:00
|
|
|
if (pdev) {
|
|
|
|
platform_device_unregister(pdev);
|
|
|
|
platform_driver_unregister(&lm78_isa_driver);
|
|
|
|
}
|
2011-07-26 03:46:11 +08:00
|
|
|
}
|
|
|
|
#else /* !CONFIG_ISA */
|
|
|
|
|
|
|
|
static int __init lm78_isa_register(void)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void lm78_isa_unregister(void)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
#endif /* CONFIG_ISA */
|
|
|
|
|
|
|
|
static int __init sm_lm78_init(void)
|
|
|
|
{
|
|
|
|
int res;
|
|
|
|
|
2012-01-15 12:39:24 +08:00
|
|
|
/*
|
|
|
|
* We register the ISA device first, so that we can skip the
|
|
|
|
* registration of an I2C interface to the same device.
|
|
|
|
*/
|
2011-07-26 03:46:11 +08:00
|
|
|
res = lm78_isa_register();
|
|
|
|
if (res)
|
|
|
|
goto exit;
|
|
|
|
|
|
|
|
res = i2c_add_driver(&lm78_driver);
|
|
|
|
if (res)
|
|
|
|
goto exit_unreg_isa_device;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
exit_unreg_isa_device:
|
|
|
|
lm78_isa_unregister();
|
|
|
|
exit:
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit sm_lm78_exit(void)
|
|
|
|
{
|
|
|
|
lm78_isa_unregister();
|
2005-04-17 06:20:36 +08:00
|
|
|
i2c_del_driver(&lm78_driver);
|
|
|
|
}
|
|
|
|
|
2014-01-30 03:40:08 +08:00
|
|
|
MODULE_AUTHOR("Frodo Looijaard, Jean Delvare <jdelvare@suse.de>");
|
2005-07-28 03:30:16 +08:00
|
|
|
MODULE_DESCRIPTION("LM78/LM79 driver");
|
2005-04-17 06:20:36 +08:00
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
module_init(sm_lm78_init);
|
|
|
|
module_exit(sm_lm78_exit);
|