![Greg Kroah-Hartman](/assets/img/avatar_default.png)
Now that i2c_add_driver() doesn't need the module owner to be set by hand, we can delete it from the drivers. This patch catches all of the drivers that I found in the current tree (if a driver sets the .owner by hand, it's not a problem, just not needed.) Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Cc: Jean Delvare <khali@linux-fr.org>
610 lines
20 KiB
C
610 lines
20 KiB
C
/*
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* lm80.c - From 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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* and Philip Edelbrock <phil@netroedge.com>
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*
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* Ported to Linux 2.6 by Tiago Sousa <mirage@kaotik.org>
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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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#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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#include <linux/hwmon.h>
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#include <linux/err.h>
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/* Addresses to scan */
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static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c,
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0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
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/* Insmod parameters */
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I2C_CLIENT_INSMOD_1(lm80);
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/* Many LM80 constants specified below */
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/* The LM80 registers */
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#define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2)
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#define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2)
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#define LM80_REG_IN(nr) (0x20 + (nr))
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#define LM80_REG_FAN1 0x28
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#define LM80_REG_FAN2 0x29
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#define LM80_REG_FAN_MIN(nr) (0x3b + (nr))
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#define LM80_REG_TEMP 0x27
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#define LM80_REG_TEMP_HOT_MAX 0x38
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#define LM80_REG_TEMP_HOT_HYST 0x39
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#define LM80_REG_TEMP_OS_MAX 0x3a
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#define LM80_REG_TEMP_OS_HYST 0x3b
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#define LM80_REG_CONFIG 0x00
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#define LM80_REG_ALARM1 0x01
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#define LM80_REG_ALARM2 0x02
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#define LM80_REG_MASK1 0x03
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#define LM80_REG_MASK2 0x04
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#define LM80_REG_FANDIV 0x05
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#define LM80_REG_RES 0x06
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/* Conversions. Rounding and limit checking is only done on the TO_REG
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variants. Note that you should be a bit careful with which arguments
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these macros are called: arguments may be evaluated more than once.
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Fixing this is just not worth it. */
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#define IN_TO_REG(val) (SENSORS_LIMIT(((val)+5)/10,0,255))
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#define IN_FROM_REG(val) ((val)*10)
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static inline unsigned char FAN_TO_REG(unsigned rpm, unsigned div)
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{
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if (rpm == 0)
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return 255;
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rpm = SENSORS_LIMIT(rpm, 1, 1000000);
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return SENSORS_LIMIT((1350000 + rpm*div / 2) / (rpm*div), 1, 254);
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}
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#define FAN_FROM_REG(val,div) ((val)==0?-1:\
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(val)==255?0:1350000/((div)*(val)))
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static inline long TEMP_FROM_REG(u16 temp)
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{
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long res;
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temp >>= 4;
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if (temp < 0x0800)
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res = 625 * (long) temp;
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else
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res = ((long) temp - 0x01000) * 625;
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return res / 10;
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}
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#define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000)
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#define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT((val)<0?\
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((val)-500)/1000:((val)+500)/1000,0,255)
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#define DIV_FROM_REG(val) (1 << (val))
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/*
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* Client data (each client gets its own)
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*/
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struct lm80_data {
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struct i2c_client client;
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struct class_device *class_dev;
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struct semaphore update_lock;
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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[2]; /* Register value */
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u8 fan_min[2]; /* Register value */
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u8 fan_div[2]; /* Register encoding, shifted right */
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u16 temp; /* Register values, shifted right */
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u8 temp_hot_max; /* Register value */
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u8 temp_hot_hyst; /* Register value */
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u8 temp_os_max; /* Register value */
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u8 temp_os_hyst; /* Register value */
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u16 alarms; /* Register encoding, combined */
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};
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/*
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* Functions declaration
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*/
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static int lm80_attach_adapter(struct i2c_adapter *adapter);
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static int lm80_detect(struct i2c_adapter *adapter, int address, int kind);
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static void lm80_init_client(struct i2c_client *client);
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static int lm80_detach_client(struct i2c_client *client);
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static struct lm80_data *lm80_update_device(struct device *dev);
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static int lm80_read_value(struct i2c_client *client, u8 reg);
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static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value);
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/*
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* Driver data (common to all clients)
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*/
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static struct i2c_driver lm80_driver = {
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.driver = {
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.name = "lm80",
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},
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.id = I2C_DRIVERID_LM80,
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.attach_adapter = lm80_attach_adapter,
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.detach_client = lm80_detach_client,
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};
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/*
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* Sysfs stuff
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*/
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#define show_in(suffix, value) \
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static ssize_t show_in_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct lm80_data *data = lm80_update_device(dev); \
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return sprintf(buf, "%d\n", IN_FROM_REG(data->value)); \
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}
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show_in(min0, in_min[0]);
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show_in(min1, in_min[1]);
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show_in(min2, in_min[2]);
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show_in(min3, in_min[3]);
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show_in(min4, in_min[4]);
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show_in(min5, in_min[5]);
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show_in(min6, in_min[6]);
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show_in(max0, in_max[0]);
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show_in(max1, in_max[1]);
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show_in(max2, in_max[2]);
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show_in(max3, in_max[3]);
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show_in(max4, in_max[4]);
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show_in(max5, in_max[5]);
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show_in(max6, in_max[6]);
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show_in(input0, in[0]);
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show_in(input1, in[1]);
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show_in(input2, in[2]);
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show_in(input3, in[3]);
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show_in(input4, in[4]);
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show_in(input5, in[5]);
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show_in(input6, in[6]);
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#define set_in(suffix, value, reg) \
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static ssize_t set_in_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \
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size_t count) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct lm80_data *data = i2c_get_clientdata(client); \
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long val = simple_strtol(buf, NULL, 10); \
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\
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down(&data->update_lock);\
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data->value = IN_TO_REG(val); \
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lm80_write_value(client, reg, data->value); \
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up(&data->update_lock);\
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return count; \
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}
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set_in(min0, in_min[0], LM80_REG_IN_MIN(0));
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set_in(min1, in_min[1], LM80_REG_IN_MIN(1));
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set_in(min2, in_min[2], LM80_REG_IN_MIN(2));
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set_in(min3, in_min[3], LM80_REG_IN_MIN(3));
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set_in(min4, in_min[4], LM80_REG_IN_MIN(4));
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set_in(min5, in_min[5], LM80_REG_IN_MIN(5));
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set_in(min6, in_min[6], LM80_REG_IN_MIN(6));
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set_in(max0, in_max[0], LM80_REG_IN_MAX(0));
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set_in(max1, in_max[1], LM80_REG_IN_MAX(1));
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set_in(max2, in_max[2], LM80_REG_IN_MAX(2));
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set_in(max3, in_max[3], LM80_REG_IN_MAX(3));
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set_in(max4, in_max[4], LM80_REG_IN_MAX(4));
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set_in(max5, in_max[5], LM80_REG_IN_MAX(5));
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set_in(max6, in_max[6], LM80_REG_IN_MAX(6));
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#define show_fan(suffix, value, div) \
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static ssize_t show_fan_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct lm80_data *data = lm80_update_device(dev); \
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->value, \
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DIV_FROM_REG(data->div))); \
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}
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show_fan(min1, fan_min[0], fan_div[0]);
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show_fan(min2, fan_min[1], fan_div[1]);
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show_fan(input1, fan[0], fan_div[0]);
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show_fan(input2, fan[1], fan_div[1]);
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#define show_fan_div(suffix, value) \
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static ssize_t show_fan_div##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct lm80_data *data = lm80_update_device(dev); \
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return sprintf(buf, "%d\n", DIV_FROM_REG(data->value)); \
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}
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show_fan_div(1, fan_div[0]);
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show_fan_div(2, fan_div[1]);
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#define set_fan(suffix, value, reg, div) \
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static ssize_t set_fan_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \
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size_t count) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct lm80_data *data = i2c_get_clientdata(client); \
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long val = simple_strtoul(buf, NULL, 10); \
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\
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down(&data->update_lock);\
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data->value = FAN_TO_REG(val, DIV_FROM_REG(data->div)); \
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lm80_write_value(client, reg, data->value); \
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up(&data->update_lock);\
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return count; \
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}
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set_fan(min1, fan_min[0], LM80_REG_FAN_MIN(1), fan_div[0]);
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set_fan(min2, fan_min[1], LM80_REG_FAN_MIN(2), fan_div[1]);
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/* Note: we save and restore the fan minimum here, because its value is
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determined in part by the fan divisor. This follows the principle of
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least suprise; the user doesn't expect the fan minimum to change just
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because the divisor changed. */
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static ssize_t set_fan_div(struct device *dev, const char *buf,
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size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct lm80_data *data = i2c_get_clientdata(client);
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unsigned long min, val = simple_strtoul(buf, NULL, 10);
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u8 reg;
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/* Save fan_min */
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down(&data->update_lock);
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min = FAN_FROM_REG(data->fan_min[nr],
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DIV_FROM_REG(data->fan_div[nr]));
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switch (val) {
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case 1: data->fan_div[nr] = 0; break;
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case 2: data->fan_div[nr] = 1; break;
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case 4: data->fan_div[nr] = 2; break;
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case 8: data->fan_div[nr] = 3; break;
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default:
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dev_err(&client->dev, "fan_div value %ld not "
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"supported. Choose one of 1, 2, 4 or 8!\n", val);
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up(&data->update_lock);
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return -EINVAL;
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}
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reg = (lm80_read_value(client, LM80_REG_FANDIV) & ~(3 << (2 * (nr + 1))))
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| (data->fan_div[nr] << (2 * (nr + 1)));
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lm80_write_value(client, LM80_REG_FANDIV, reg);
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/* Restore fan_min */
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data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
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lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1), data->fan_min[nr]);
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up(&data->update_lock);
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return count;
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}
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#define set_fan_div(number) \
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static ssize_t set_fan_div##number(struct device *dev, struct device_attribute *attr, const char *buf, \
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size_t count) \
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{ \
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return set_fan_div(dev, buf, count, number - 1); \
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}
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set_fan_div(1);
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set_fan_div(2);
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static ssize_t show_temp_input1(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct lm80_data *data = lm80_update_device(dev);
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return sprintf(buf, "%ld\n", TEMP_FROM_REG(data->temp));
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}
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#define show_temp(suffix, value) \
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static ssize_t show_temp_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct lm80_data *data = lm80_update_device(dev); \
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return sprintf(buf, "%d\n", TEMP_LIMIT_FROM_REG(data->value)); \
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}
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show_temp(hot_max, temp_hot_max);
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show_temp(hot_hyst, temp_hot_hyst);
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show_temp(os_max, temp_os_max);
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show_temp(os_hyst, temp_os_hyst);
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#define set_temp(suffix, value, reg) \
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static ssize_t set_temp_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \
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size_t count) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct lm80_data *data = i2c_get_clientdata(client); \
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long val = simple_strtoul(buf, NULL, 10); \
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\
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down(&data->update_lock); \
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data->value = TEMP_LIMIT_TO_REG(val); \
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lm80_write_value(client, reg, data->value); \
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up(&data->update_lock); \
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return count; \
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}
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set_temp(hot_max, temp_hot_max, LM80_REG_TEMP_HOT_MAX);
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set_temp(hot_hyst, temp_hot_hyst, LM80_REG_TEMP_HOT_HYST);
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set_temp(os_max, temp_os_max, LM80_REG_TEMP_OS_MAX);
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set_temp(os_hyst, temp_os_hyst, LM80_REG_TEMP_OS_HYST);
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static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct lm80_data *data = lm80_update_device(dev);
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return sprintf(buf, "%u\n", data->alarms);
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}
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static DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min0, set_in_min0);
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static DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min1, set_in_min1);
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static DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min2, set_in_min2);
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static DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min3, set_in_min3);
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static DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min4, set_in_min4);
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static DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min5, set_in_min5);
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static DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min6, set_in_min6);
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static DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max0, set_in_max0);
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static DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max1, set_in_max1);
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static DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max2, set_in_max2);
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static DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max3, set_in_max3);
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static DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max4, set_in_max4);
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static DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max5, set_in_max5);
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static DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max6, set_in_max6);
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static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL);
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static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL);
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static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL);
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static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL);
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static DEVICE_ATTR(in4_input, S_IRUGO, show_in_input4, NULL);
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static DEVICE_ATTR(in5_input, S_IRUGO, show_in_input5, NULL);
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static DEVICE_ATTR(in6_input, S_IRUGO, show_in_input6, NULL);
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static DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min1,
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set_fan_min1);
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static DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min2,
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set_fan_min2);
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static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input1, NULL);
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static DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input2, NULL);
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static DEVICE_ATTR(fan1_div, S_IWUSR | S_IRUGO, show_fan_div1, set_fan_div1);
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static DEVICE_ATTR(fan2_div, S_IWUSR | S_IRUGO, show_fan_div2, set_fan_div2);
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static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL);
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static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_hot_max,
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set_temp_hot_max);
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static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, show_temp_hot_hyst,
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set_temp_hot_hyst);
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static DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_os_max,
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set_temp_os_max);
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static DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temp_os_hyst,
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set_temp_os_hyst);
|
|
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
|
|
|
|
/*
|
|
* Real code
|
|
*/
|
|
|
|
static int lm80_attach_adapter(struct i2c_adapter *adapter)
|
|
{
|
|
if (!(adapter->class & I2C_CLASS_HWMON))
|
|
return 0;
|
|
return i2c_probe(adapter, &addr_data, lm80_detect);
|
|
}
|
|
|
|
static int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
|
|
{
|
|
int i, cur;
|
|
struct i2c_client *new_client;
|
|
struct lm80_data *data;
|
|
int err = 0;
|
|
const char *name;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
goto exit;
|
|
|
|
/* OK. For now, we presume we have a valid client. We now create the
|
|
client structure, even though we cannot fill it completely yet.
|
|
But it allows us to access lm80_{read,write}_value. */
|
|
if (!(data = kzalloc(sizeof(struct lm80_data), GFP_KERNEL))) {
|
|
err = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
new_client = &data->client;
|
|
i2c_set_clientdata(new_client, data);
|
|
new_client->addr = address;
|
|
new_client->adapter = adapter;
|
|
new_client->driver = &lm80_driver;
|
|
new_client->flags = 0;
|
|
|
|
/* Now, we do the remaining detection. It is lousy. */
|
|
if (lm80_read_value(new_client, LM80_REG_ALARM2) & 0xc0)
|
|
goto error_free;
|
|
for (i = 0x2a; i <= 0x3d; i++) {
|
|
cur = i2c_smbus_read_byte_data(new_client, i);
|
|
if ((i2c_smbus_read_byte_data(new_client, i + 0x40) != cur)
|
|
|| (i2c_smbus_read_byte_data(new_client, i + 0x80) != cur)
|
|
|| (i2c_smbus_read_byte_data(new_client, i + 0xc0) != cur))
|
|
goto error_free;
|
|
}
|
|
|
|
/* Determine the chip type - only one kind supported! */
|
|
kind = lm80;
|
|
name = "lm80";
|
|
|
|
/* Fill in the remaining client fields and put it into the global list */
|
|
strlcpy(new_client->name, name, I2C_NAME_SIZE);
|
|
data->valid = 0;
|
|
init_MUTEX(&data->update_lock);
|
|
|
|
/* Tell the I2C layer a new client has arrived */
|
|
if ((err = i2c_attach_client(new_client)))
|
|
goto error_free;
|
|
|
|
/* Initialize the LM80 chip */
|
|
lm80_init_client(new_client);
|
|
|
|
/* A few vars need to be filled upon startup */
|
|
data->fan_min[0] = lm80_read_value(new_client, LM80_REG_FAN_MIN(1));
|
|
data->fan_min[1] = lm80_read_value(new_client, LM80_REG_FAN_MIN(2));
|
|
|
|
/* Register sysfs hooks */
|
|
data->class_dev = hwmon_device_register(&new_client->dev);
|
|
if (IS_ERR(data->class_dev)) {
|
|
err = PTR_ERR(data->class_dev);
|
|
goto error_detach;
|
|
}
|
|
|
|
device_create_file(&new_client->dev, &dev_attr_in0_min);
|
|
device_create_file(&new_client->dev, &dev_attr_in1_min);
|
|
device_create_file(&new_client->dev, &dev_attr_in2_min);
|
|
device_create_file(&new_client->dev, &dev_attr_in3_min);
|
|
device_create_file(&new_client->dev, &dev_attr_in4_min);
|
|
device_create_file(&new_client->dev, &dev_attr_in5_min);
|
|
device_create_file(&new_client->dev, &dev_attr_in6_min);
|
|
device_create_file(&new_client->dev, &dev_attr_in0_max);
|
|
device_create_file(&new_client->dev, &dev_attr_in1_max);
|
|
device_create_file(&new_client->dev, &dev_attr_in2_max);
|
|
device_create_file(&new_client->dev, &dev_attr_in3_max);
|
|
device_create_file(&new_client->dev, &dev_attr_in4_max);
|
|
device_create_file(&new_client->dev, &dev_attr_in5_max);
|
|
device_create_file(&new_client->dev, &dev_attr_in6_max);
|
|
device_create_file(&new_client->dev, &dev_attr_in0_input);
|
|
device_create_file(&new_client->dev, &dev_attr_in1_input);
|
|
device_create_file(&new_client->dev, &dev_attr_in2_input);
|
|
device_create_file(&new_client->dev, &dev_attr_in3_input);
|
|
device_create_file(&new_client->dev, &dev_attr_in4_input);
|
|
device_create_file(&new_client->dev, &dev_attr_in5_input);
|
|
device_create_file(&new_client->dev, &dev_attr_in6_input);
|
|
device_create_file(&new_client->dev, &dev_attr_fan1_min);
|
|
device_create_file(&new_client->dev, &dev_attr_fan2_min);
|
|
device_create_file(&new_client->dev, &dev_attr_fan1_input);
|
|
device_create_file(&new_client->dev, &dev_attr_fan2_input);
|
|
device_create_file(&new_client->dev, &dev_attr_fan1_div);
|
|
device_create_file(&new_client->dev, &dev_attr_fan2_div);
|
|
device_create_file(&new_client->dev, &dev_attr_temp1_input);
|
|
device_create_file(&new_client->dev, &dev_attr_temp1_max);
|
|
device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
|
|
device_create_file(&new_client->dev, &dev_attr_temp1_crit);
|
|
device_create_file(&new_client->dev, &dev_attr_temp1_crit_hyst);
|
|
device_create_file(&new_client->dev, &dev_attr_alarms);
|
|
|
|
return 0;
|
|
|
|
error_detach:
|
|
i2c_detach_client(new_client);
|
|
error_free:
|
|
kfree(data);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
static int lm80_detach_client(struct i2c_client *client)
|
|
{
|
|
struct lm80_data *data = i2c_get_clientdata(client);
|
|
int err;
|
|
|
|
hwmon_device_unregister(data->class_dev);
|
|
|
|
if ((err = i2c_detach_client(client)))
|
|
return err;
|
|
|
|
kfree(data);
|
|
return 0;
|
|
}
|
|
|
|
static int lm80_read_value(struct i2c_client *client, u8 reg)
|
|
{
|
|
return i2c_smbus_read_byte_data(client, reg);
|
|
}
|
|
|
|
static int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)
|
|
{
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
|
}
|
|
|
|
/* Called when we have found a new LM80. */
|
|
static void lm80_init_client(struct i2c_client *client)
|
|
{
|
|
/* Reset all except Watchdog values and last conversion values
|
|
This sets fan-divs to 2, among others. This makes most other
|
|
initializations unnecessary */
|
|
lm80_write_value(client, LM80_REG_CONFIG, 0x80);
|
|
/* Set 11-bit temperature resolution */
|
|
lm80_write_value(client, LM80_REG_RES, 0x08);
|
|
|
|
/* Start monitoring */
|
|
lm80_write_value(client, LM80_REG_CONFIG, 0x01);
|
|
}
|
|
|
|
static struct lm80_data *lm80_update_device(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct lm80_data *data = i2c_get_clientdata(client);
|
|
int i;
|
|
|
|
down(&data->update_lock);
|
|
|
|
if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
|
|
dev_dbg(&client->dev, "Starting lm80 update\n");
|
|
for (i = 0; i <= 6; i++) {
|
|
data->in[i] =
|
|
lm80_read_value(client, LM80_REG_IN(i));
|
|
data->in_min[i] =
|
|
lm80_read_value(client, LM80_REG_IN_MIN(i));
|
|
data->in_max[i] =
|
|
lm80_read_value(client, LM80_REG_IN_MAX(i));
|
|
}
|
|
data->fan[0] = lm80_read_value(client, LM80_REG_FAN1);
|
|
data->fan_min[0] =
|
|
lm80_read_value(client, LM80_REG_FAN_MIN(1));
|
|
data->fan[1] = lm80_read_value(client, LM80_REG_FAN2);
|
|
data->fan_min[1] =
|
|
lm80_read_value(client, LM80_REG_FAN_MIN(2));
|
|
|
|
data->temp =
|
|
(lm80_read_value(client, LM80_REG_TEMP) << 8) |
|
|
(lm80_read_value(client, LM80_REG_RES) & 0xf0);
|
|
data->temp_os_max =
|
|
lm80_read_value(client, LM80_REG_TEMP_OS_MAX);
|
|
data->temp_os_hyst =
|
|
lm80_read_value(client, LM80_REG_TEMP_OS_HYST);
|
|
data->temp_hot_max =
|
|
lm80_read_value(client, LM80_REG_TEMP_HOT_MAX);
|
|
data->temp_hot_hyst =
|
|
lm80_read_value(client, LM80_REG_TEMP_HOT_HYST);
|
|
|
|
i = lm80_read_value(client, LM80_REG_FANDIV);
|
|
data->fan_div[0] = (i >> 2) & 0x03;
|
|
data->fan_div[1] = (i >> 4) & 0x03;
|
|
data->alarms = lm80_read_value(client, LM80_REG_ALARM1) +
|
|
(lm80_read_value(client, LM80_REG_ALARM2) << 8);
|
|
data->last_updated = jiffies;
|
|
data->valid = 1;
|
|
}
|
|
|
|
up(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static int __init sensors_lm80_init(void)
|
|
{
|
|
return i2c_add_driver(&lm80_driver);
|
|
}
|
|
|
|
static void __exit sensors_lm80_exit(void)
|
|
{
|
|
i2c_del_driver(&lm80_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and "
|
|
"Philip Edelbrock <phil@netroedge.com>");
|
|
MODULE_DESCRIPTION("LM80 driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sensors_lm80_init);
|
|
module_exit(sensors_lm80_exit);
|