![Jean Delvare](/assets/img/avatar_default.png)
VRM values fit in u8 by design now. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
1200 lines
36 KiB
C
1200 lines
36 KiB
C
/*
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it87.c - Part of lm_sensors, Linux kernel modules for hardware
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monitoring.
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Supports: IT8705F Super I/O chip w/LPC interface
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IT8712F Super I/O chip w/LPC interface & SMBus
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Sis950 A clone of the IT8705F
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Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com>
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Largely inspired by lm78.c of the same package
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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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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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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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/*
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djg@pdp8.net David Gesswein 7/18/01
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Modified to fix bug with not all alarms enabled.
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Added ability to read battery voltage and select temperature sensor
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type at module load time.
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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/i2c-isa.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/hwmon-vid.h>
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#include <linux/err.h>
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#include <asm/io.h>
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/* Addresses to scan */
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static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
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0x2e, 0x2f, I2C_CLIENT_END };
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static unsigned short isa_address;
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/* Insmod parameters */
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I2C_CLIENT_INSMOD_2(it87, it8712);
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#define REG 0x2e /* The register to read/write */
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#define DEV 0x07 /* Register: Logical device select */
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#define VAL 0x2f /* The value to read/write */
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#define PME 0x04 /* The device with the fan registers in it */
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#define DEVID 0x20 /* Register: Device ID */
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#define DEVREV 0x22 /* Register: Device Revision */
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static inline int
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superio_inb(int reg)
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{
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outb(reg, REG);
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return inb(VAL);
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}
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static int superio_inw(int reg)
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{
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int val;
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outb(reg++, REG);
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val = inb(VAL) << 8;
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outb(reg, REG);
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val |= inb(VAL);
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return val;
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}
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static inline void
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superio_select(void)
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{
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outb(DEV, REG);
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outb(PME, VAL);
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}
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static inline void
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superio_enter(void)
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{
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outb(0x87, REG);
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outb(0x01, REG);
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outb(0x55, REG);
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outb(0x55, REG);
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}
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static inline void
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superio_exit(void)
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{
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outb(0x02, REG);
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outb(0x02, VAL);
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}
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#define IT8712F_DEVID 0x8712
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#define IT8705F_DEVID 0x8705
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#define IT87_ACT_REG 0x30
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#define IT87_BASE_REG 0x60
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/* Update battery voltage after every reading if true */
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static int update_vbat;
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/* Not all BIOSes properly configure the PWM registers */
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static int fix_pwm_polarity;
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/* Chip Type */
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static u16 chip_type;
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/* Many IT87 constants specified below */
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/* Length of ISA address segment */
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#define IT87_EXTENT 8
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/* Where are the ISA address/data registers relative to the base address */
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#define IT87_ADDR_REG_OFFSET 5
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#define IT87_DATA_REG_OFFSET 6
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/*----- The IT87 registers -----*/
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#define IT87_REG_CONFIG 0x00
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#define IT87_REG_ALARM1 0x01
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#define IT87_REG_ALARM2 0x02
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#define IT87_REG_ALARM3 0x03
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#define IT87_REG_VID 0x0a
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#define IT87_REG_FAN_DIV 0x0b
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/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
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#define IT87_REG_FAN(nr) (0x0d + (nr))
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#define IT87_REG_FAN_MIN(nr) (0x10 + (nr))
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#define IT87_REG_FAN_MAIN_CTRL 0x13
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#define IT87_REG_FAN_CTL 0x14
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#define IT87_REG_PWM(nr) (0x15 + (nr))
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#define IT87_REG_VIN(nr) (0x20 + (nr))
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#define IT87_REG_TEMP(nr) (0x29 + (nr))
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#define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
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#define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
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#define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2)
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#define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2)
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#define IT87_REG_I2C_ADDR 0x48
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#define IT87_REG_VIN_ENABLE 0x50
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#define IT87_REG_TEMP_ENABLE 0x51
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#define IT87_REG_CHIPID 0x58
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#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255))
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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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rpm = SENSORS_LIMIT(rpm, 1, 1000000);
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return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
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254);
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}
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#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div)))
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#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\
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((val)+500)/1000),-128,127))
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#define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000)
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#define PWM_TO_REG(val) ((val) >> 1)
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#define PWM_FROM_REG(val) (((val)&0x7f) << 1)
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static int DIV_TO_REG(int val)
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{
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int answer = 0;
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while ((val >>= 1) != 0)
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answer++;
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return answer;
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}
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#define DIV_FROM_REG(val) (1 << (val))
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/* For each registered IT87, we need to keep some data in memory. That
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data is pointed to by it87_list[NR]->data. The structure itself is
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dynamically allocated, at the same time when a new it87 client is
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allocated. */
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struct it87_data {
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struct i2c_client client;
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struct class_device *class_dev;
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struct semaphore lock;
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enum chips type;
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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[9]; /* Register value */
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u8 in_max[9]; /* Register value */
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u8 in_min[9]; /* 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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u8 temp[3]; /* Register value */
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u8 temp_high[3]; /* Register value */
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u8 temp_low[3]; /* Register value */
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u8 sensor; /* 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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u8 vrm;
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u32 alarms; /* Register encoding, combined */
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u8 fan_main_ctrl; /* Register value */
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u8 manual_pwm_ctl[3]; /* manual PWM value set by user */
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};
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static int it87_attach_adapter(struct i2c_adapter *adapter);
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static int it87_isa_attach_adapter(struct i2c_adapter *adapter);
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static int it87_detect(struct i2c_adapter *adapter, int address, int kind);
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static int it87_detach_client(struct i2c_client *client);
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static int it87_read_value(struct i2c_client *client, u8 register);
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static int it87_write_value(struct i2c_client *client, u8 register,
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u8 value);
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static struct it87_data *it87_update_device(struct device *dev);
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static int it87_check_pwm(struct i2c_client *client);
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static void it87_init_client(struct i2c_client *client, struct it87_data *data);
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static struct i2c_driver it87_driver = {
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.driver = {
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.name = "it87",
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},
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.id = I2C_DRIVERID_IT87,
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.attach_adapter = it87_attach_adapter,
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.detach_client = it87_detach_client,
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};
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static struct i2c_driver it87_isa_driver = {
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.driver = {
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.name = "it87-isa",
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},
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.attach_adapter = it87_isa_attach_adapter,
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.detach_client = it87_detach_client,
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};
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static ssize_t show_in(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct it87_data *data = it87_update_device(dev);
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
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}
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static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct it87_data *data = it87_update_device(dev);
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
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}
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static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct it87_data *data = it87_update_device(dev);
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return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
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}
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static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct it87_data *data = i2c_get_clientdata(client);
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unsigned long val = simple_strtoul(buf, NULL, 10);
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down(&data->update_lock);
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data->in_min[nr] = IN_TO_REG(val);
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it87_write_value(client, IT87_REG_VIN_MIN(nr),
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data->in_min[nr]);
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up(&data->update_lock);
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return count;
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}
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static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct it87_data *data = i2c_get_clientdata(client);
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unsigned long val = simple_strtoul(buf, NULL, 10);
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down(&data->update_lock);
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data->in_max[nr] = IN_TO_REG(val);
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it87_write_value(client, IT87_REG_VIN_MAX(nr),
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data->in_max[nr]);
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up(&data->update_lock);
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return count;
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}
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#define show_in_offset(offset) \
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static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
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show_in, NULL, offset);
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#define limit_in_offset(offset) \
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static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
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show_in_min, set_in_min, offset); \
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static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
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show_in_max, set_in_max, offset);
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show_in_offset(0);
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limit_in_offset(0);
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show_in_offset(1);
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limit_in_offset(1);
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show_in_offset(2);
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limit_in_offset(2);
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show_in_offset(3);
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limit_in_offset(3);
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show_in_offset(4);
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limit_in_offset(4);
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show_in_offset(5);
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limit_in_offset(5);
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show_in_offset(6);
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limit_in_offset(6);
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show_in_offset(7);
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limit_in_offset(7);
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show_in_offset(8);
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/* 3 temperatures */
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static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct it87_data *data = it87_update_device(dev);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
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}
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static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct it87_data *data = it87_update_device(dev);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
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}
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static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct it87_data *data = it87_update_device(dev);
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return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr]));
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}
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static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct it87_data *data = i2c_get_clientdata(client);
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int val = simple_strtol(buf, NULL, 10);
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down(&data->update_lock);
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data->temp_high[nr] = TEMP_TO_REG(val);
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it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
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up(&data->update_lock);
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return count;
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}
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static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct it87_data *data = i2c_get_clientdata(client);
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int val = simple_strtol(buf, NULL, 10);
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down(&data->update_lock);
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data->temp_low[nr] = TEMP_TO_REG(val);
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it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
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up(&data->update_lock);
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return count;
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}
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#define show_temp_offset(offset) \
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static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
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show_temp, NULL, offset - 1); \
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static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
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show_temp_max, set_temp_max, offset - 1); \
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static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
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show_temp_min, set_temp_min, offset - 1);
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show_temp_offset(1);
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show_temp_offset(2);
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show_temp_offset(3);
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static ssize_t show_sensor(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct it87_data *data = it87_update_device(dev);
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u8 reg = data->sensor; /* In case the value is updated while we use it */
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if (reg & (1 << nr))
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return sprintf(buf, "3\n"); /* thermal diode */
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if (reg & (8 << nr))
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return sprintf(buf, "2\n"); /* thermistor */
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return sprintf(buf, "0\n"); /* disabled */
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}
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static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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int nr = sensor_attr->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct it87_data *data = i2c_get_clientdata(client);
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int val = simple_strtol(buf, NULL, 10);
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down(&data->update_lock);
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data->sensor &= ~(1 << nr);
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data->sensor &= ~(8 << nr);
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/* 3 = thermal diode; 2 = thermistor; 0 = disabled */
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if (val == 3)
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data->sensor |= 1 << nr;
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else if (val == 2)
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data->sensor |= 8 << nr;
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else if (val != 0) {
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up(&data->update_lock);
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return -EINVAL;
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}
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it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor);
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up(&data->update_lock);
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return count;
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}
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#define show_sensor_offset(offset) \
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static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
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show_sensor, set_sensor, offset - 1);
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show_sensor_offset(1);
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show_sensor_offset(2);
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show_sensor_offset(3);
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/* 3 Fans */
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|
static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
|
|
struct it87_data *data = it87_update_device(dev);
|
|
return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr],
|
|
DIV_FROM_REG(data->fan_div[nr])));
|
|
}
|
|
static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
|
|
struct it87_data *data = it87_update_device(dev);
|
|
return sprintf(buf,"%d\n",
|
|
FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])));
|
|
}
|
|
static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
|
|
struct it87_data *data = it87_update_device(dev);
|
|
return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
|
|
}
|
|
static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
|
|
struct it87_data *data = it87_update_device(dev);
|
|
return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0);
|
|
}
|
|
static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
|
|
struct it87_data *data = it87_update_device(dev);
|
|
return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]);
|
|
}
|
|
static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct it87_data *data = i2c_get_clientdata(client);
|
|
int val = simple_strtol(buf, NULL, 10);
|
|
u8 reg = it87_read_value(client, IT87_REG_FAN_DIV);
|
|
|
|
down(&data->update_lock);
|
|
switch (nr) {
|
|
case 0: data->fan_div[nr] = reg & 0x07; break;
|
|
case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break;
|
|
case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break;
|
|
}
|
|
|
|
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
|
|
it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]);
|
|
up(&data->update_lock);
|
|
return count;
|
|
}
|
|
static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct it87_data *data = i2c_get_clientdata(client);
|
|
int val = simple_strtol(buf, NULL, 10);
|
|
int i, min[3];
|
|
u8 old;
|
|
|
|
down(&data->update_lock);
|
|
old = it87_read_value(client, IT87_REG_FAN_DIV);
|
|
|
|
for (i = 0; i < 3; i++)
|
|
min[i] = FAN_FROM_REG(data->fan_min[i], DIV_FROM_REG(data->fan_div[i]));
|
|
|
|
switch (nr) {
|
|
case 0:
|
|
case 1:
|
|
data->fan_div[nr] = DIV_TO_REG(val);
|
|
break;
|
|
case 2:
|
|
if (val < 8)
|
|
data->fan_div[nr] = 1;
|
|
else
|
|
data->fan_div[nr] = 3;
|
|
}
|
|
val = old & 0x80;
|
|
val |= (data->fan_div[0] & 0x07);
|
|
val |= (data->fan_div[1] & 0x07) << 3;
|
|
if (data->fan_div[2] == 3)
|
|
val |= 0x1 << 6;
|
|
it87_write_value(client, IT87_REG_FAN_DIV, val);
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
data->fan_min[i]=FAN_TO_REG(min[i], DIV_FROM_REG(data->fan_div[i]));
|
|
it87_write_value(client, IT87_REG_FAN_MIN(i), data->fan_min[i]);
|
|
}
|
|
up(&data->update_lock);
|
|
return count;
|
|
}
|
|
static ssize_t set_pwm_enable(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct it87_data *data = i2c_get_clientdata(client);
|
|
int val = simple_strtol(buf, NULL, 10);
|
|
|
|
down(&data->update_lock);
|
|
|
|
if (val == 0) {
|
|
int tmp;
|
|
/* make sure the fan is on when in on/off mode */
|
|
tmp = it87_read_value(client, IT87_REG_FAN_CTL);
|
|
it87_write_value(client, IT87_REG_FAN_CTL, tmp | (1 << nr));
|
|
/* set on/off mode */
|
|
data->fan_main_ctrl &= ~(1 << nr);
|
|
it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
|
|
} else if (val == 1) {
|
|
/* set SmartGuardian mode */
|
|
data->fan_main_ctrl |= (1 << nr);
|
|
it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
|
|
/* set saved pwm value, clear FAN_CTLX PWM mode bit */
|
|
it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
|
|
} else {
|
|
up(&data->update_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
up(&data->update_lock);
|
|
return count;
|
|
}
|
|
static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct it87_data *data = i2c_get_clientdata(client);
|
|
int val = simple_strtol(buf, NULL, 10);
|
|
|
|
if (val < 0 || val > 255)
|
|
return -EINVAL;
|
|
|
|
down(&data->update_lock);
|
|
data->manual_pwm_ctl[nr] = val;
|
|
if (data->fan_main_ctrl & (1 << nr))
|
|
it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr]));
|
|
up(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define show_fan_offset(offset) \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
|
|
show_fan, NULL, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
|
|
show_fan_min, set_fan_min, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
|
|
show_fan_div, set_fan_div, offset - 1);
|
|
|
|
show_fan_offset(1);
|
|
show_fan_offset(2);
|
|
show_fan_offset(3);
|
|
|
|
#define show_pwm_offset(offset) \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
|
|
show_pwm_enable, set_pwm_enable, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
|
|
show_pwm, set_pwm, offset - 1);
|
|
|
|
show_pwm_offset(1);
|
|
show_pwm_offset(2);
|
|
show_pwm_offset(3);
|
|
|
|
/* Alarms */
|
|
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct it87_data *data = it87_update_device(dev);
|
|
return sprintf(buf, "%u\n", data->alarms);
|
|
}
|
|
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
|
|
|
|
static ssize_t
|
|
show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct it87_data *data = it87_update_device(dev);
|
|
return sprintf(buf, "%u\n", data->vrm);
|
|
}
|
|
static ssize_t
|
|
store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct it87_data *data = i2c_get_clientdata(client);
|
|
u32 val;
|
|
|
|
val = simple_strtoul(buf, NULL, 10);
|
|
data->vrm = val;
|
|
|
|
return count;
|
|
}
|
|
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
|
|
#define device_create_file_vrm(client) \
|
|
device_create_file(&client->dev, &dev_attr_vrm)
|
|
|
|
static ssize_t
|
|
show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct it87_data *data = it87_update_device(dev);
|
|
return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
|
|
}
|
|
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
|
|
#define device_create_file_vid(client) \
|
|
device_create_file(&client->dev, &dev_attr_cpu0_vid)
|
|
|
|
/* This function is called when:
|
|
* it87_driver is inserted (when this module is loaded), for each
|
|
available adapter
|
|
* when a new adapter is inserted (and it87_driver is still present) */
|
|
static int it87_attach_adapter(struct i2c_adapter *adapter)
|
|
{
|
|
if (!(adapter->class & I2C_CLASS_HWMON))
|
|
return 0;
|
|
return i2c_probe(adapter, &addr_data, it87_detect);
|
|
}
|
|
|
|
static int it87_isa_attach_adapter(struct i2c_adapter *adapter)
|
|
{
|
|
return it87_detect(adapter, isa_address, -1);
|
|
}
|
|
|
|
/* SuperIO detection - will change isa_address if a chip is found */
|
|
static int __init it87_find(unsigned short *address)
|
|
{
|
|
int err = -ENODEV;
|
|
|
|
superio_enter();
|
|
chip_type = superio_inw(DEVID);
|
|
if (chip_type != IT8712F_DEVID
|
|
&& chip_type != IT8705F_DEVID)
|
|
goto exit;
|
|
|
|
superio_select();
|
|
if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
|
|
pr_info("it87: Device not activated, skipping\n");
|
|
goto exit;
|
|
}
|
|
|
|
*address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1);
|
|
if (*address == 0) {
|
|
pr_info("it87: Base address not set, skipping\n");
|
|
goto exit;
|
|
}
|
|
|
|
err = 0;
|
|
pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n",
|
|
chip_type, *address, superio_inb(DEVREV) & 0x0f);
|
|
|
|
exit:
|
|
superio_exit();
|
|
return err;
|
|
}
|
|
|
|
/* This function is called by i2c_probe */
|
|
static int it87_detect(struct i2c_adapter *adapter, int address, int kind)
|
|
{
|
|
int i;
|
|
struct i2c_client *new_client;
|
|
struct it87_data *data;
|
|
int err = 0;
|
|
const char *name = "";
|
|
int is_isa = i2c_is_isa_adapter(adapter);
|
|
int enable_pwm_interface;
|
|
|
|
if (!is_isa &&
|
|
!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
goto ERROR0;
|
|
|
|
/* Reserve the ISA region */
|
|
if (is_isa)
|
|
if (!request_region(address, IT87_EXTENT,
|
|
it87_isa_driver.driver.name))
|
|
goto ERROR0;
|
|
|
|
/* For now, we presume we have a valid client. We create the
|
|
client structure, even though we cannot fill it completely yet.
|
|
But it allows us to access it87_{read,write}_value. */
|
|
|
|
if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) {
|
|
err = -ENOMEM;
|
|
goto ERROR1;
|
|
}
|
|
|
|
new_client = &data->client;
|
|
if (is_isa)
|
|
init_MUTEX(&data->lock);
|
|
i2c_set_clientdata(new_client, data);
|
|
new_client->addr = address;
|
|
new_client->adapter = adapter;
|
|
new_client->driver = is_isa ? &it87_isa_driver : &it87_driver;
|
|
new_client->flags = 0;
|
|
|
|
/* Now, we do the remaining detection. */
|
|
|
|
if (kind < 0) {
|
|
if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80)
|
|
|| (!is_isa
|
|
&& it87_read_value(new_client, IT87_REG_I2C_ADDR) != address)) {
|
|
err = -ENODEV;
|
|
goto ERROR2;
|
|
}
|
|
}
|
|
|
|
/* Determine the chip type. */
|
|
if (kind <= 0) {
|
|
i = it87_read_value(new_client, IT87_REG_CHIPID);
|
|
if (i == 0x90) {
|
|
kind = it87;
|
|
if ((is_isa) && (chip_type == IT8712F_DEVID))
|
|
kind = it8712;
|
|
}
|
|
else {
|
|
if (kind == 0)
|
|
dev_info(&adapter->dev,
|
|
"Ignoring 'force' parameter for unknown chip at "
|
|
"adapter %d, address 0x%02x\n",
|
|
i2c_adapter_id(adapter), address);
|
|
err = -ENODEV;
|
|
goto ERROR2;
|
|
}
|
|
}
|
|
|
|
if (kind == it87) {
|
|
name = "it87";
|
|
} else if (kind == it8712) {
|
|
name = "it8712";
|
|
}
|
|
|
|
/* Fill in the remaining client fields and put it into the global list */
|
|
strlcpy(new_client->name, name, I2C_NAME_SIZE);
|
|
data->type = kind;
|
|
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 ERROR2;
|
|
|
|
/* Check PWM configuration */
|
|
enable_pwm_interface = it87_check_pwm(new_client);
|
|
|
|
/* Initialize the IT87 chip */
|
|
it87_init_client(new_client, data);
|
|
|
|
/* 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 ERROR3;
|
|
}
|
|
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in0_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in1_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in2_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in3_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in4_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in5_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in6_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in7_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in8_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in0_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in1_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in2_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in3_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in4_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in5_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in6_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in7_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in0_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in1_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in2_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in3_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in4_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in5_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in6_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_in7_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp1_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp2_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp1_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp2_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_max.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp1_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp2_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp1_type.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp2_type.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_fan1_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_fan2_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_fan3_input.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_fan1_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_fan2_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_fan3_min.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_fan1_div.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_fan2_div.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_fan3_div.dev_attr);
|
|
device_create_file(&new_client->dev, &dev_attr_alarms);
|
|
if (enable_pwm_interface) {
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_pwm1_enable.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_pwm2_enable.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_pwm3_enable.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_pwm1.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_pwm2.dev_attr);
|
|
device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr);
|
|
}
|
|
|
|
if (data->type == it8712) {
|
|
data->vrm = vid_which_vrm();
|
|
device_create_file_vrm(new_client);
|
|
device_create_file_vid(new_client);
|
|
}
|
|
|
|
return 0;
|
|
|
|
ERROR3:
|
|
i2c_detach_client(new_client);
|
|
ERROR2:
|
|
kfree(data);
|
|
ERROR1:
|
|
if (is_isa)
|
|
release_region(address, IT87_EXTENT);
|
|
ERROR0:
|
|
return err;
|
|
}
|
|
|
|
static int it87_detach_client(struct i2c_client *client)
|
|
{
|
|
struct it87_data *data = i2c_get_clientdata(client);
|
|
int err;
|
|
|
|
hwmon_device_unregister(data->class_dev);
|
|
|
|
if ((err = i2c_detach_client(client)))
|
|
return err;
|
|
|
|
if(i2c_is_isa_client(client))
|
|
release_region(client->addr, IT87_EXTENT);
|
|
kfree(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* 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 IT87 BUSY flag at this moment - it could lead to deadlocks,
|
|
would slow down the IT87 access and should not be necessary. */
|
|
static int it87_read_value(struct i2c_client *client, u8 reg)
|
|
{
|
|
struct it87_data *data = i2c_get_clientdata(client);
|
|
|
|
int res;
|
|
if (i2c_is_isa_client(client)) {
|
|
down(&data->lock);
|
|
outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET);
|
|
res = inb_p(client->addr + IT87_DATA_REG_OFFSET);
|
|
up(&data->lock);
|
|
return res;
|
|
} else
|
|
return i2c_smbus_read_byte_data(client, reg);
|
|
}
|
|
|
|
/* The SMBus locks itself, but ISA access muse be locked explicitly!
|
|
We don't want to lock the whole ISA bus, so we lock each client
|
|
separately.
|
|
We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
|
|
would slow down the IT87 access and should not be necessary. */
|
|
static int it87_write_value(struct i2c_client *client, u8 reg, u8 value)
|
|
{
|
|
struct it87_data *data = i2c_get_clientdata(client);
|
|
|
|
if (i2c_is_isa_client(client)) {
|
|
down(&data->lock);
|
|
outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET);
|
|
outb_p(value, client->addr + IT87_DATA_REG_OFFSET);
|
|
up(&data->lock);
|
|
return 0;
|
|
} else
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
|
}
|
|
|
|
/* Return 1 if and only if the PWM interface is safe to use */
|
|
static int it87_check_pwm(struct i2c_client *client)
|
|
{
|
|
/* Some BIOSes fail to correctly configure the IT87 fans. All fans off
|
|
* and polarity set to active low is sign that this is the case so we
|
|
* disable pwm control to protect the user. */
|
|
int tmp = it87_read_value(client, IT87_REG_FAN_CTL);
|
|
if ((tmp & 0x87) == 0) {
|
|
if (fix_pwm_polarity) {
|
|
/* The user asks us to attempt a chip reconfiguration.
|
|
* This means switching to active high polarity and
|
|
* inverting all fan speed values. */
|
|
int i;
|
|
u8 pwm[3];
|
|
|
|
for (i = 0; i < 3; i++)
|
|
pwm[i] = it87_read_value(client,
|
|
IT87_REG_PWM(i));
|
|
|
|
/* If any fan is in automatic pwm mode, the polarity
|
|
* might be correct, as suspicious as it seems, so we
|
|
* better don't change anything (but still disable the
|
|
* PWM interface). */
|
|
if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
|
|
dev_info(&client->dev, "Reconfiguring PWM to "
|
|
"active high polarity\n");
|
|
it87_write_value(client, IT87_REG_FAN_CTL,
|
|
tmp | 0x87);
|
|
for (i = 0; i < 3; i++)
|
|
it87_write_value(client,
|
|
IT87_REG_PWM(i),
|
|
0x7f & ~pwm[i]);
|
|
return 1;
|
|
}
|
|
|
|
dev_info(&client->dev, "PWM configuration is "
|
|
"too broken to be fixed\n");
|
|
}
|
|
|
|
dev_info(&client->dev, "Detected broken BIOS "
|
|
"defaults, disabling PWM interface\n");
|
|
return 0;
|
|
} else if (fix_pwm_polarity) {
|
|
dev_info(&client->dev, "PWM configuration looks "
|
|
"sane, won't touch\n");
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Called when we have found a new IT87. */
|
|
static void it87_init_client(struct i2c_client *client, struct it87_data *data)
|
|
{
|
|
int tmp, i;
|
|
|
|
/* initialize to sane defaults:
|
|
* - if the chip is in manual pwm mode, this will be overwritten with
|
|
* the actual settings on the chip (so in this case, initialization
|
|
* is not needed)
|
|
* - if in automatic or on/off mode, we could switch to manual mode,
|
|
* read the registers and set manual_pwm_ctl accordingly, but currently
|
|
* this is not implemented, so we initialize to something sane */
|
|
for (i = 0; i < 3; i++) {
|
|
data->manual_pwm_ctl[i] = 0xff;
|
|
}
|
|
|
|
/* Check if temperature channnels are reset manually or by some reason */
|
|
tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE);
|
|
if ((tmp & 0x3f) == 0) {
|
|
/* Temp1,Temp3=thermistor; Temp2=thermal diode */
|
|
tmp = (tmp & 0xc0) | 0x2a;
|
|
it87_write_value(client, IT87_REG_TEMP_ENABLE, tmp);
|
|
}
|
|
data->sensor = tmp;
|
|
|
|
/* Check if voltage monitors are reset manually or by some reason */
|
|
tmp = it87_read_value(client, IT87_REG_VIN_ENABLE);
|
|
if ((tmp & 0xff) == 0) {
|
|
/* Enable all voltage monitors */
|
|
it87_write_value(client, IT87_REG_VIN_ENABLE, 0xff);
|
|
}
|
|
|
|
/* Check if tachometers are reset manually or by some reason */
|
|
data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL);
|
|
if ((data->fan_main_ctrl & 0x70) == 0) {
|
|
/* Enable all fan tachometers */
|
|
data->fan_main_ctrl |= 0x70;
|
|
it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
|
|
}
|
|
|
|
/* Set current fan mode registers and the default settings for the
|
|
* other mode registers */
|
|
for (i = 0; i < 3; i++) {
|
|
if (data->fan_main_ctrl & (1 << i)) {
|
|
/* pwm mode */
|
|
tmp = it87_read_value(client, IT87_REG_PWM(i));
|
|
if (tmp & 0x80) {
|
|
/* automatic pwm - not yet implemented, but
|
|
* leave the settings made by the BIOS alone
|
|
* until a change is requested via the sysfs
|
|
* interface */
|
|
} else {
|
|
/* manual pwm */
|
|
data->manual_pwm_ctl[i] = PWM_FROM_REG(tmp);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Start monitoring */
|
|
it87_write_value(client, IT87_REG_CONFIG,
|
|
(it87_read_value(client, IT87_REG_CONFIG) & 0x36)
|
|
| (update_vbat ? 0x41 : 0x01));
|
|
}
|
|
|
|
static struct it87_data *it87_update_device(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct it87_data *data = i2c_get_clientdata(client);
|
|
int i;
|
|
|
|
down(&data->update_lock);
|
|
|
|
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|
|
|| !data->valid) {
|
|
|
|
if (update_vbat) {
|
|
/* Cleared after each update, so reenable. Value
|
|
returned by this read will be previous value */
|
|
it87_write_value(client, IT87_REG_CONFIG,
|
|
it87_read_value(client, IT87_REG_CONFIG) | 0x40);
|
|
}
|
|
for (i = 0; i <= 7; i++) {
|
|
data->in[i] =
|
|
it87_read_value(client, IT87_REG_VIN(i));
|
|
data->in_min[i] =
|
|
it87_read_value(client, IT87_REG_VIN_MIN(i));
|
|
data->in_max[i] =
|
|
it87_read_value(client, IT87_REG_VIN_MAX(i));
|
|
}
|
|
data->in[8] =
|
|
it87_read_value(client, IT87_REG_VIN(8));
|
|
/* Temperature sensor doesn't have limit registers, set
|
|
to min and max value */
|
|
data->in_min[8] = 0;
|
|
data->in_max[8] = 255;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
data->fan[i] =
|
|
it87_read_value(client, IT87_REG_FAN(i));
|
|
data->fan_min[i] =
|
|
it87_read_value(client, IT87_REG_FAN_MIN(i));
|
|
}
|
|
for (i = 0; i < 3; i++) {
|
|
data->temp[i] =
|
|
it87_read_value(client, IT87_REG_TEMP(i));
|
|
data->temp_high[i] =
|
|
it87_read_value(client, IT87_REG_TEMP_HIGH(i));
|
|
data->temp_low[i] =
|
|
it87_read_value(client, IT87_REG_TEMP_LOW(i));
|
|
}
|
|
|
|
i = it87_read_value(client, IT87_REG_FAN_DIV);
|
|
data->fan_div[0] = i & 0x07;
|
|
data->fan_div[1] = (i >> 3) & 0x07;
|
|
data->fan_div[2] = (i & 0x40) ? 3 : 1;
|
|
|
|
data->alarms =
|
|
it87_read_value(client, IT87_REG_ALARM1) |
|
|
(it87_read_value(client, IT87_REG_ALARM2) << 8) |
|
|
(it87_read_value(client, IT87_REG_ALARM3) << 16);
|
|
data->fan_main_ctrl = it87_read_value(client, IT87_REG_FAN_MAIN_CTRL);
|
|
|
|
data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE);
|
|
/* The 8705 does not have VID capability */
|
|
if (data->type == it8712) {
|
|
data->vid = it87_read_value(client, IT87_REG_VID);
|
|
data->vid &= 0x1f;
|
|
}
|
|
data->last_updated = jiffies;
|
|
data->valid = 1;
|
|
}
|
|
|
|
up(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static int __init sm_it87_init(void)
|
|
{
|
|
int res;
|
|
|
|
res = i2c_add_driver(&it87_driver);
|
|
if (res)
|
|
return res;
|
|
|
|
if (!it87_find(&isa_address)) {
|
|
res = i2c_isa_add_driver(&it87_isa_driver);
|
|
if (res) {
|
|
i2c_del_driver(&it87_driver);
|
|
return res;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit sm_it87_exit(void)
|
|
{
|
|
i2c_isa_del_driver(&it87_isa_driver);
|
|
i2c_del_driver(&it87_driver);
|
|
}
|
|
|
|
|
|
MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>");
|
|
MODULE_DESCRIPTION("IT8705F, IT8712F, Sis950 driver");
|
|
module_param(update_vbat, bool, 0);
|
|
MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
|
|
module_param(fix_pwm_polarity, bool, 0);
|
|
MODULE_PARM_DESC(fix_pwm_polarity, "Force PWM polarity to active high (DANGEROUS)");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sm_it87_init);
|
|
module_exit(sm_it87_exit);
|