Greg,
I have converted it87 i2c driver to use sysfs. Please review it and
submit it for inclusion.
Thank you,
florin
diff -Nru linux-2.5.68/drivers/i2c/chips/it87.c linux-2.5.68-it87/drivers/i2c/chips/it87.c
--- linux-2.5.68/drivers/i2c/chips/it87.c 1969-12-31 18:00:00.000000000 -0600
+++ linux-2.5.68-it87/drivers/i2c/chips/it87.c 2003-04-24 09:54:51.000000000 -0500
@@ -0,0 +1,1002 @@
+/*
+ it87.c - Part of lm_sensors, Linux kernel modules for hardware
+ monitoring.
+
+ Supports: IT8705F Super I/O chip w/LPC interface
+ IT8712F Super I/O chup w/LPC interface & SMbus
+ Sis950 A clone of the IT8705F
+
+ Copyright (c) 2001 Chris Gauthron <chrisg at 0-in.com>
+ Largely inspired by lm78.c of the same package
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/*
+ djg at pdp8.net David Gesswein 7/18/01
+ Modified to fix bug with not all alarms enabled.
+ Added ability to read battery voltage and select temperature sensor
+ type at module load time.
+*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/i2c-sensor.h>
+#include <asm/io.h>
+
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { SENSORS_I2C_END };
+static unsigned short normal_i2c_range[] = { 0x20, 0x2f, SENSORS_I2C_END };
+static unsigned int normal_isa[] = { 0x0290, SENSORS_ISA_END };
+static unsigned int normal_isa_range[] = { SENSORS_ISA_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_4(it87, it8705, it8712, sis950);
+
+
+/* Update battery voltage after every reading if true */
+static int update_vbat = 0;
+
+
+/* Enable Temp1 as thermal resistor */
+/* Enable Temp2 as thermal diode */
+/* Enable Temp3 as thermal resistor */
+static int temp_type = 0x2a;
+
+/* Many IT87 constants specified below */
+
+/* Length of ISA address segment */
+#define IT87_EXTENT 8
+
+/* Where are the ISA address/data registers relative to the base address */
+#define IT87_ADDR_REG_OFFSET 5
+#define IT87_DATA_REG_OFFSET 6
+
+/*----- The IT87 registers -----*/
+
+#define IT87_REG_CONFIG 0x00
+
+#define IT87_REG_ALARM1 0x01
+#define IT87_REG_ALARM2 0x02
+#define IT87_REG_ALARM3 0x03
+
+#define IT87_REG_VID 0x0a
+#define IT87_REG_FAN_DIV 0x0b
+
+/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
+
+#define IT87_REG_FAN(nr) (0x0c + (nr))
+#define IT87_REG_FAN_MIN(nr) (0x0f + (nr))
+#define IT87_REG_FAN_CTRL 0x13
+
+#define IT87_REG_VIN(nr) (0x20 + (nr))
+#define IT87_REG_TEMP(nr) (0x28 + (nr))
+
+#define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2)
+#define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2)
+#define IT87_REG_TEMP_HIGH(nr) (0x3e + (nr) * 2)
+#define IT87_REG_TEMP_LOW(nr) (0x3f + (nr) * 2)
+
+#define IT87_REG_I2C_ADDR 0x48
+
+#define IT87_REG_VIN_ENABLE 0x50
+#define IT87_REG_TEMP_ENABLE 0x51
+
+#define IT87_REG_CHIPID 0x58
+
+static inline u8 IN_TO_REG(long val, int inNum)
+{
+ /* to avoid floating point, we multiply everything by 100.
+ val is guaranteed to be positive, so we can achieve the effect of
+ rounding by (...*10+5)/10. Note that the *10 is hidden in the
+ /250 (which should really be /2500).
+ At the end, we need to /100 because we *100 everything and we need
+ to /10 because of the rounding thing, so we /1000. */
+ if (inNum <= 1)
+ return (u8)
+ SENSORS_LIMIT(((val * 210240 - 13300) / 250 + 5) / 1000,
+ 0, 255);
+ else if (inNum == 2)
+ return (u8)
+ SENSORS_LIMIT(((val * 157370 - 13300) / 250 + 5) / 1000,
+ 0, 255);
+ else if (inNum == 3)
+ return (u8)
+ SENSORS_LIMIT(((val * 101080 - 13300) / 250 + 5) / 1000,
+ 0, 255);
+ else
+ return (u8) SENSORS_LIMIT(((val * 41714 - 13300) / 250 + 5)
+ / 1000, 0, 255);
+}
+
+static inline long IN_FROM_REG(u8 val, int inNum)
+{
+ /* to avoid floating point, we multiply everything by 100.
+ val is guaranteed to be positive, so we can achieve the effect of
+ rounding by adding 0.5. Or, to avoid fp math, we do (...*10+5)/10.
+ We need to scale with *100 anyway, so no need to /100 at the end. */
+ if (inNum <= 1)
+ return (long) (((250000 * val + 13300) / 210240 * 10 + 5) /10);
+ else if (inNum == 2)
+ return (long) (((250000 * val + 13300) / 157370 * 10 + 5) /10);
+ else if (inNum == 3)
+ return (long) (((250000 * val + 13300) / 101080 * 10 + 5) /10);
+ else
+ return (long) (((250000 * val + 13300) / 41714 * 10 + 5) /10);
+}
+
+static inline u8 FAN_TO_REG(long rpm, int div)
+{
+ if (rpm == 0)
+ return 255;
+ rpm = SENSORS_LIMIT(rpm, 1, 1000000);
+ return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
+ 254);
+}
+
+#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div)))
+
+#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-5)/10):\
+ ((val)+5)/10),0,255))
+#define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*10)
+
+#define VID_FROM_REG(val) ((val)==0x1f?0:(val)>=0x10?510-(val)*10:\
+ 205-(val)*5)
+#define ALARMS_FROM_REG(val) (val)
+
+#define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1)
+#define DIV_FROM_REG(val) (1 << (val))
+
+/* Initial limits. Use the config file to set better limits. */
+#define IT87_INIT_IN_0 170
+#define IT87_INIT_IN_1 250
+#define IT87_INIT_IN_2 (330 / 2)
+#define IT87_INIT_IN_3 (((500) * 100)/168)
+#define IT87_INIT_IN_4 (((1200) * 10)/38)
+#define IT87_INIT_IN_5 (((1200) * 10)/72)
+#define IT87_INIT_IN_6 (((500) * 10)/56)
+#define IT87_INIT_IN_7 (((500) * 100)/168)
+
+#define IT87_INIT_IN_PERCENTAGE 10
+
+#define IT87_INIT_IN_MIN_0 \
+ (IT87_INIT_IN_0 - IT87_INIT_IN_0 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MAX_0 \
+ (IT87_INIT_IN_0 + IT87_INIT_IN_0 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MIN_1 \
+ (IT87_INIT_IN_1 - IT87_INIT_IN_1 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MAX_1 \
+ (IT87_INIT_IN_1 + IT87_INIT_IN_1 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MIN_2 \
+ (IT87_INIT_IN_2 - IT87_INIT_IN_2 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MAX_2 \
+ (IT87_INIT_IN_2 + IT87_INIT_IN_2 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MIN_3 \
+ (IT87_INIT_IN_3 - IT87_INIT_IN_3 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MAX_3 \
+ (IT87_INIT_IN_3 + IT87_INIT_IN_3 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MIN_4 \
+ (IT87_INIT_IN_4 - IT87_INIT_IN_4 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MAX_4 \
+ (IT87_INIT_IN_4 + IT87_INIT_IN_4 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MIN_5 \
+ (IT87_INIT_IN_5 - IT87_INIT_IN_5 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MAX_5 \
+ (IT87_INIT_IN_5 + IT87_INIT_IN_5 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MIN_6 \
+ (IT87_INIT_IN_6 - IT87_INIT_IN_6 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MAX_6 \
+ (IT87_INIT_IN_6 + IT87_INIT_IN_6 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MIN_7 \
+ (IT87_INIT_IN_7 - IT87_INIT_IN_7 * IT87_INIT_IN_PERCENTAGE / 100)
+#define IT87_INIT_IN_MAX_7 \
+ (IT87_INIT_IN_7 + IT87_INIT_IN_7 * IT87_INIT_IN_PERCENTAGE / 100)
+
+#define IT87_INIT_FAN_MIN_1 3000
+#define IT87_INIT_FAN_MIN_2 3000
+#define IT87_INIT_FAN_MIN_3 3000
+
+#define IT87_INIT_TEMP_HIGH_1 600
+#define IT87_INIT_TEMP_LOW_1 200
+#define IT87_INIT_TEMP_HIGH_2 600
+#define IT87_INIT_TEMP_LOW_2 200
+#define IT87_INIT_TEMP_HIGH_3 600
+#define IT87_INIT_TEMP_LOW_3 200
+
+/* For each registered IT87, we need to keep some data in memory. That
+ data is pointed to by it87_list[NR]->data. The structure itself is
+ dynamically allocated, at the same time when a new it87 client is
+ allocated. */
+struct it87_data {
+ struct semaphore lock;
+ int sysctl_id;
+ enum chips type;
+
+ struct semaphore update_lock;
+ char valid; /* !=0 if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+
+ u8 in[9]; /* Register value */
+ u8 in_max[9]; /* Register value */
+ u8 in_min[9]; /* Register value */
+ u8 fan[3]; /* Register value */
+ u8 fan_min[3]; /* Register value */
+ u8 temp[3]; /* Register value */
+ u8 temp_high[3]; /* Register value */
+ u8 temp_low[3]; /* Register value */
+ u8 fan_div[3]; /* Register encoding, shifted right */
+ u8 vid; /* Register encoding, combined */
+ u32 alarms; /* Register encoding, combined */
+};
+
+
+static int it87_attach_adapter(struct i2c_adapter *adapter);
+static int it87_detect(struct i2c_adapter *adapter, int address, int kind);
+static int it87_detach_client(struct i2c_client *client);
+
+static int it87_read_value(struct i2c_client *client, u8 register);
+static int it87_write_value(struct i2c_client *client, u8 register,
+ u8 value);
+static void it87_update_client(struct i2c_client *client);
+static void it87_init_client(struct i2c_client *client);
+
+
+static struct i2c_driver it87_driver = {
+ .owner = THIS_MODULE,
+ .name = "IT87xx sensor driver",
+ .id = I2C_DRIVERID_IT87,
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = it87_attach_adapter,
+ .detach_client = it87_detach_client,
+};
+
+static int it87_id = 0;
+
+/* The /proc/sys entries */
+
+/* -- SENSORS SYSCTL START -- */
+#define IT87_SYSCTL_IN0 1000 /* Volts * 100 */
+#define IT87_SYSCTL_IN1 1001
+#define IT87_SYSCTL_IN2 1002
+#define IT87_SYSCTL_IN3 1003
+#define IT87_SYSCTL_IN4 1004
+#define IT87_SYSCTL_IN5 1005
+#define IT87_SYSCTL_IN6 1006
+#define IT87_SYSCTL_IN7 1007
+#define IT87_SYSCTL_IN8 1008
+#define IT87_SYSCTL_FAN1 1101 /* Rotations/min */
+#define IT87_SYSCTL_FAN2 1102
+#define IT87_SYSCTL_FAN3 1103
+#define IT87_SYSCTL_TEMP1 1200 /* Degrees Celcius * 10 */
+#define IT87_SYSCTL_TEMP2 1201 /* Degrees Celcius * 10 */
+#define IT87_SYSCTL_TEMP3 1202 /* Degrees Celcius * 10 */
+#define IT87_SYSCTL_VID 1300 /* Volts * 100 */
+#define IT87_SYSCTL_FAN_DIV 2000 /* 1, 2, 4 or 8 */
+#define IT87_SYSCTL_ALARMS 2004 /* bitvector */
+
+#define IT87_ALARM_IN0 0x000100
+#define IT87_ALARM_IN1 0x000200
+#define IT87_ALARM_IN2 0x000400
+#define IT87_ALARM_IN3 0x000800
+#define IT87_ALARM_IN4 0x001000
+#define IT87_ALARM_IN5 0x002000
+#define IT87_ALARM_IN6 0x004000
+#define IT87_ALARM_IN7 0x008000
+#define IT87_ALARM_FAN1 0x0001
+#define IT87_ALARM_FAN2 0x0002
+#define IT87_ALARM_FAN3 0x0004
+#define IT87_ALARM_TEMP1 0x00010000
+#define IT87_ALARM_TEMP2 0x00020000
+#define IT87_ALARM_TEMP3 0x00040000
+
+/* -- SENSORS SYSCTL END -- */
+
+/* These files are created for each detected IT87. This is just a template;
+ though at first sight, you might think we could use a statically
+ allocated list, we need some way to get back to the parent - which
+ is done through one of the 'extra' fields which are initialized
+ when a new copy is allocated.
+static ctl_table it87_dir_table_template[] = {
+ {IT87_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_in},
+ {IT87_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_in},
+ {IT87_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_in},
+ {IT87_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_in},
+ {IT87_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_in},
+ {IT87_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_in},
+ {IT87_SYSCTL_IN6, "in6", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_in},
+ {IT87_SYSCTL_IN7, "in7", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_in},
+ {IT87_SYSCTL_IN8, "in8", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_in},
+ {IT87_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_fan},
+ {IT87_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_fan},
+ {IT87_SYSCTL_FAN3, "fan3", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_fan},
+ {IT87_SYSCTL_TEMP1, "temp1", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_temp},
+ {IT87_SYSCTL_TEMP2, "temp2", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_temp},
+ {IT87_SYSCTL_TEMP3, "temp3", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_temp},
+ {IT87_SYSCTL_VID, "vid", NULL, 0, 0444, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_vid},
+ {IT87_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_fan_div},
+ {IT87_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &it87_alarms},
+ {0}
+};
+
+*/
+
+static ssize_t show_in(struct device *dev, char *buf, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ return sprintf(buf, "%ld\n", IN_FROM_REG(data->in[nr], nr)*10 );
+}
+
+static ssize_t show_in_min(struct device *dev, char *buf, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_min[nr], nr)*10 );
+}
+
+static ssize_t show_in_max(struct device *dev, char *buf, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ return sprintf(buf, "%ld\n", IN_FROM_REG(data->in_max[nr], nr)*10 );
+}
+
+static ssize_t set_in_min(struct device *dev, const char *buf,
+ size_t count, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10)/10;
+ data->in_min[nr] = IN_TO_REG(val,nr);
+ it87_write_value(client, IT87_REG_VIN_MIN(nr),
+ data->in_min[nr]);
+ return count;
+}
+static ssize_t set_in_max(struct device *dev, const char *buf,
+ size_t count, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10)/10;
+ data->in_max[nr] = IN_TO_REG(val,nr);
+ it87_write_value(client, IT87_REG_VIN_MAX(nr),
+ data->in_max[nr]);
+ return count;
+}
+#define show_in_offset(offset) \
+static ssize_t \
+ show_in##offset (struct device *dev, char *buf) \
+{ \
+ return show_in(dev, buf, 0x##offset); \
+} \
+static ssize_t \
+ show_in##offset##_min (struct device *dev, char *buf) \
+{ \
+ return show_in_min(dev, buf, 0x##offset); \
+} \
+static ssize_t \
+ show_in##offset##_max (struct device *dev, char *buf) \
+{ \
+ return show_in_max(dev, buf, 0x##offset); \
+} \
+static ssize_t set_in##offset##_min (struct device *dev, \
+ const char *buf, size_t count) \
+{ \
+ return set_in_min(dev, buf, count, 0x##offset); \
+} \
+static ssize_t set_in##offset##_max (struct device *dev, \
+ const char *buf, size_t count) \
+{ \
+ return set_in_max(dev, buf, count, 0x##offset); \
+} \
+static DEVICE_ATTR(in_input##offset, S_IRUGO, show_in##offset, NULL) \
+static DEVICE_ATTR(in_min##offset, S_IRUGO | S_IWUSR, \
+ show_in##offset##_min, set_in##offset##_min) \
+static DEVICE_ATTR(in_max##offset, S_IRUGO | S_IWUSR, \
+ show_in##offset##_max, set_in##offset##_max)
+
+show_in_offset(0);
+show_in_offset(1);
+show_in_offset(2);
+show_in_offset(3);
+show_in_offset(4);
+
+/* 3 temperatures */
+static ssize_t show_temp(struct device *dev, char *buf, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])*10 );
+}
+/* more like overshoot temperature */
+static ssize_t show_temp_max(struct device *dev, char *buf, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr])*10);
+}
+/* more like hysteresis temperature */
+static ssize_t show_temp_min(struct device *dev, char *buf, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr])*10);
+}
+static ssize_t set_temp_max(struct device *dev, const char *buf,
+ size_t count, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10)/10;
+ data->temp_high[nr] = TEMP_TO_REG(val);
+ it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]);
+ return count;
+}
+static ssize_t set_temp_min(struct device *dev, const char *buf,
+ size_t count, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10)/10;
+ data->temp_low[nr] = TEMP_TO_REG(val);
+ it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]);
+ return count;
+}
+#define show_temp_offset(offset) \
+static ssize_t show_temp_##offset (struct device *dev, char *buf) \
+{ \
+ return show_temp(dev, buf, 0x##offset - 1); \
+} \
+static ssize_t \
+show_temp_##offset##_max (struct device *dev, char *buf) \
+{ \
+ return show_temp_max(dev, buf, 0x##offset - 1); \
+} \
+static ssize_t \
+show_temp_##offset##_min (struct device *dev, char *buf) \
+{ \
+ return show_temp_min(dev, buf, 0x##offset - 1); \
+} \
+static ssize_t set_temp_##offset##_max (struct device *dev, \
+ const char *buf, size_t count) \
+{ \
+ return set_temp_max(dev, buf, count, 0x##offset - 1); \
+} \
+static ssize_t set_temp_##offset##_min (struct device *dev, \
+ const char *buf, size_t count) \
+{ \
+ return set_temp_min(dev, buf, count, 0x##offset - 1); \
+} \
+static DEVICE_ATTR(temp_input##offset, S_IRUGO, show_temp_##offset, NULL) \
+static DEVICE_ATTR(temp_max##offset, S_IRUGO | S_IWUSR, \
+ show_temp_##offset##_max, set_temp_##offset##_max) \
+static DEVICE_ATTR(temp_min##offset, S_IRUGO | S_IWUSR, \
+ show_temp_##offset##_min, set_temp_##offset##_min)
+
+show_temp_offset(1);
+show_temp_offset(2);
+show_temp_offset(3);
+
+/* 2 Fans */
+static ssize_t show_fan(struct device *dev, char *buf, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ 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, char *buf, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ 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, char *buf, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ return sprintf(buf,"%d\n", DIV_FROM_REG(data->fan_div[nr]) );
+}
+static ssize_t set_fan_min(struct device *dev, const char *buf,
+ size_t count, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10);
+ data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
+ it87_write_value(client, IT87_REG_FAN_MIN(nr+1), data->fan_min[nr]);
+ return count;
+}
+static ssize_t set_fan_div(struct device *dev, const char *buf,
+ size_t count, int nr) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ int val = simple_strtol(buf, NULL, 10);
+ int old = it87_read_value(client, IT87_REG_FAN_DIV);
+ data->fan_div[nr] = DIV_TO_REG(val);
+ old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4);
+ it87_write_value(client, IT87_REG_FAN_DIV, old);
+ return count;
+}
+
+#define show_fan_offset(offset) \
+static ssize_t show_fan_##offset (struct device *dev, char *buf) \
+{ \
+ return show_fan(dev, buf, 0x##offset - 1); \
+} \
+static ssize_t show_fan_##offset##_min (struct device *dev, char *buf) \
+{ \
+ return show_fan_min(dev, buf, 0x##offset - 1); \
+} \
+static ssize_t show_fan_##offset##_div (struct device *dev, char *buf) \
+{ \
+ return show_fan_div(dev, buf, 0x##offset - 1); \
+} \
+static ssize_t set_fan_##offset##_min (struct device *dev, \
+ const char *buf, size_t count) \
+{ \
+ return set_fan_min(dev, buf, count, 0x##offset - 1); \
+} \
+static ssize_t set_fan_##offset##_div (struct device *dev, \
+ const char *buf, size_t count) \
+{ \
+ return set_fan_div(dev, buf, count, 0x##offset - 1); \
+} \
+static DEVICE_ATTR(fan_input##offset, S_IRUGO, show_fan_##offset, NULL) \
+static DEVICE_ATTR(fan_min##offset, S_IRUGO | S_IWUSR, \
+ show_fan_##offset##_min, set_fan_##offset##_min) \
+static DEVICE_ATTR(fan_div##offset, S_IRUGO | S_IWUSR, \
+ show_fan_##offset##_div, set_fan_##offset##_div)
+
+show_fan_offset(1);
+show_fan_offset(2);
+
+/* Alarm */
+static ssize_t show_alarm(struct device *dev, char *buf) {
+ struct i2c_client *client = to_i2c_client(dev);
+ struct it87_data *data = i2c_get_clientdata(client);
+ it87_update_client(client);
+ return sprintf(buf,"%d\n", ALARMS_FROM_REG(data->alarms));
+}
+static DEVICE_ATTR(alarm, S_IRUGO | S_IWUSR, show_alarm, NULL);
+
+/* 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)
+{
+ return i2c_detect(adapter, &addr_data, it87_detect);
+}
+
+/* This function is called by i2c_detect */
+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 = "";
+ const char *client_name = "";
+ int is_isa = i2c_is_isa_adapter(adapter);
+
+ if (!is_isa
+ && !i2c_check_functionality(adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA)) goto
+ ERROR0;
+
+ if (is_isa) {
+ if (check_region(address, IT87_EXTENT))
+ goto ERROR0;
+ }
+
+ /* Probe whether there is anything available on this address. Already
+ done for SMBus clients */
+ if (kind < 0) {
+ if (is_isa) {
+
+#define REALLY_SLOW_IO
+ /* We need the timeouts for at least some IT87-like chips. But only
+ if we read 'undefined' registers. */
+ i = inb_p(address + 1);
+ if (inb_p(address + 2) != i)
+ goto ERROR0;
+ if (inb_p(address + 3) != i)
+ goto ERROR0;
+ if (inb_p(address + 7) != i)
+ goto ERROR0;
+#undef REALLY_SLOW_IO
+
+ /* Let's just hope nothing breaks here */
+ i = inb_p(address + 5) & 0x7f;
+ outb_p(~i & 0x7f, address + 5);
+ if ((inb_p(address + 5) & 0x7f) != (~i & 0x7f)) {
+ outb_p(i, address + 5);
+ return 0;
+ }
+ }
+ }
+
+ /* 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 it87_{read,write}_value. */
+
+ if (!(new_client = kmalloc((sizeof(struct i2c_client)) +
+ sizeof(struct it87_data),
+ GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto ERROR0;
+ }
+
+ data = (struct it87_data *) (new_client + 1);
+ if (is_isa)
+ init_MUTEX(&data->lock);
+ i2c_set_clientdata(new_client, data);
+ new_client->addr = address;
+ new_client->adapter = adapter;
+ new_client->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)
+ goto ERROR1;
+ if (!is_isa
+ && (it87_read_value(new_client, IT87_REG_I2C_ADDR) !=
+ address)) goto ERROR1;
+ }
+
+ /* Determine the chip type. */
+ if (kind <= 0) {
+ i = it87_read_value(new_client, IT87_REG_CHIPID);
+ if (i == 0x90) {
+ kind = it87;
+ }
+ else {
+ if (kind == 0)
+ printk
+ ("it87.o: Ignoring 'force' parameter for unknown chip at "
+ "adapter %d, address 0x%02x\n",
+ i2c_adapter_id(adapter), address);
+ goto ERROR1;
+ }
+ }
+
+ if (kind == it87) {
+ name = "it87";
+ client_name = "IT87 chip";
+ } /* else if (kind == it8712) {
+ name = "it8712";
+ client_name = "IT87-J chip";
+ } */ else {
+ dev_dbg(&adapter->dev, "Internal error: unknown kind (%d)?!?",
+ kind);
+ goto ERROR1;
+ }
+
+ /* Reserve the ISA region */
+ if (is_isa)
+ request_region(address, IT87_EXTENT, name);
+
+ /* Fill in the remaining client fields and put it into the global list */
+ strncpy(new_client->dev.name, name, DEVICE_NAME_SIZE);
+
+ data->type = kind;
+
+ new_client->id = it87_id++;
+ 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 ERROR3;
+
+ /* register sysfs hooks */
+ device_create_file(&new_client->dev, &dev_attr_in_input0);
+ device_create_file(&new_client->dev, &dev_attr_in_input1);
+ device_create_file(&new_client->dev, &dev_attr_in_input2);
+ device_create_file(&new_client->dev, &dev_attr_in_input3);
+ device_create_file(&new_client->dev, &dev_attr_in_input4);
+ device_create_file(&new_client->dev, &dev_attr_in_min0);
+ device_create_file(&new_client->dev, &dev_attr_in_min1);
+ device_create_file(&new_client->dev, &dev_attr_in_min2);
+ device_create_file(&new_client->dev, &dev_attr_in_min3);
+ device_create_file(&new_client->dev, &dev_attr_in_min4);
+ device_create_file(&new_client->dev, &dev_attr_in_max0);
+ device_create_file(&new_client->dev, &dev_attr_in_max1);
+ device_create_file(&new_client->dev, &dev_attr_in_max2);
+ device_create_file(&new_client->dev, &dev_attr_in_max3);
+ device_create_file(&new_client->dev, &dev_attr_in_max4);
+ device_create_file(&new_client->dev, &dev_attr_temp_input1);
+ device_create_file(&new_client->dev, &dev_attr_temp_input2);
+ device_create_file(&new_client->dev, &dev_attr_temp_input3);
+ device_create_file(&new_client->dev, &dev_attr_temp_max1);
+ device_create_file(&new_client->dev, &dev_attr_temp_max2);
+ device_create_file(&new_client->dev, &dev_attr_temp_max3);
+ device_create_file(&new_client->dev, &dev_attr_temp_min1);
+ device_create_file(&new_client->dev, &dev_attr_temp_min2);
+ device_create_file(&new_client->dev, &dev_attr_temp_min3);
+ device_create_file(&new_client->dev, &dev_attr_fan_input1);
+ device_create_file(&new_client->dev, &dev_attr_fan_input2);
+ device_create_file(&new_client->dev, &dev_attr_fan_min1);
+ device_create_file(&new_client->dev, &dev_attr_fan_min2);
+ device_create_file(&new_client->dev, &dev_attr_fan_div1);
+ device_create_file(&new_client->dev, &dev_attr_fan_div2);
+ device_create_file(&new_client->dev, &dev_attr_alarm);
+
+ /* Initialize the IT87 chip */
+ it87_init_client(new_client);
+ return 0;
+
+/* OK, this is not exactly good programming practice, usually. But it is
+ very code-efficient in this case. */
+
+ ERROR3:
+ if (is_isa)
+ release_region(address, IT87_EXTENT);
+ ERROR1:
+ kfree(new_client);
+ ERROR0:
+ return err;
+}
+
+static int it87_detach_client(struct i2c_client *client)
+{
+ int err;
+
+ if ((err = i2c_detach_client(client))) {
+ dev_err(&client->dev,
+ "Client deregistration failed, client not detached.\n");
+ return err;
+ }
+
+ if(i2c_is_isa_client(client))
+ release_region(client->addr, IT87_EXTENT);
+ kfree(client);
+
+ return 0;
+}
+
+/* The SMBus locks itself, but ISA access must be locked explicitely!
+ 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.
+ There are some ugly typecasts here, but the good new is - they should
+ nowhere else 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 explicitely!
+ 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.
+ There are some ugly typecasts here, but the good new is - they should
+ nowhere else 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);
+}
+
+/* Called when we have found a new IT87. It should set limits, etc. */
+static void it87_init_client(struct i2c_client *client)
+{
+ /* Reset all except Watchdog values and last conversion values
+ This sets fan-divs to 2, among others */
+ it87_write_value(client, IT87_REG_CONFIG, 0x80);
+ it87_write_value(client, IT87_REG_VIN_MIN(0),
+ IN_TO_REG(IT87_INIT_IN_MIN_0, 0));
+ it87_write_value(client, IT87_REG_VIN_MAX(0),
+ IN_TO_REG(IT87_INIT_IN_MAX_0, 0));
+ it87_write_value(client, IT87_REG_VIN_MIN(1),
+ IN_TO_REG(IT87_INIT_IN_MIN_1, 1));
+ it87_write_value(client, IT87_REG_VIN_MAX(1),
+ IN_TO_REG(IT87_INIT_IN_MAX_1, 1));
+ it87_write_value(client, IT87_REG_VIN_MIN(2),
+ IN_TO_REG(IT87_INIT_IN_MIN_2, 2));
+ it87_write_value(client, IT87_REG_VIN_MAX(2),
+ IN_TO_REG(IT87_INIT_IN_MAX_2, 2));
+ it87_write_value(client, IT87_REG_VIN_MIN(3),
+ IN_TO_REG(IT87_INIT_IN_MIN_3, 3));
+ it87_write_value(client, IT87_REG_VIN_MAX(3),
+ IN_TO_REG(IT87_INIT_IN_MAX_3, 3));
+ it87_write_value(client, IT87_REG_VIN_MIN(4),
+ IN_TO_REG(IT87_INIT_IN_MIN_4, 4));
+ it87_write_value(client, IT87_REG_VIN_MAX(4),
+ IN_TO_REG(IT87_INIT_IN_MAX_4, 4));
+ it87_write_value(client, IT87_REG_VIN_MIN(5),
+ IN_TO_REG(IT87_INIT_IN_MIN_5, 5));
+ it87_write_value(client, IT87_REG_VIN_MAX(5),
+ IN_TO_REG(IT87_INIT_IN_MAX_5, 5));
+ it87_write_value(client, IT87_REG_VIN_MIN(6),
+ IN_TO_REG(IT87_INIT_IN_MIN_6, 6));
+ it87_write_value(client, IT87_REG_VIN_MAX(6),
+ IN_TO_REG(IT87_INIT_IN_MAX_6, 6));
+ it87_write_value(client, IT87_REG_VIN_MIN(7),
+ IN_TO_REG(IT87_INIT_IN_MIN_7, 7));
+ it87_write_value(client, IT87_REG_VIN_MAX(7),
+ IN_TO_REG(IT87_INIT_IN_MAX_7, 7));
+ /* Note: Battery voltage does not have limit registers */
+ it87_write_value(client, IT87_REG_FAN_MIN(1),
+ FAN_TO_REG(IT87_INIT_FAN_MIN_1, 2));
+ it87_write_value(client, IT87_REG_FAN_MIN(2),
+ FAN_TO_REG(IT87_INIT_FAN_MIN_2, 2));
+ it87_write_value(client, IT87_REG_FAN_MIN(3),
+ FAN_TO_REG(IT87_INIT_FAN_MIN_3, 2));
+ it87_write_value(client, IT87_REG_TEMP_HIGH(1),
+ TEMP_TO_REG(IT87_INIT_TEMP_HIGH_1));
+ it87_write_value(client, IT87_REG_TEMP_LOW(1),
+ TEMP_TO_REG(IT87_INIT_TEMP_LOW_1));
+ it87_write_value(client, IT87_REG_TEMP_HIGH(2),
+ TEMP_TO_REG(IT87_INIT_TEMP_HIGH_2));
+ it87_write_value(client, IT87_REG_TEMP_LOW(2),
+ TEMP_TO_REG(IT87_INIT_TEMP_LOW_2));
+ it87_write_value(client, IT87_REG_TEMP_HIGH(3),
+ TEMP_TO_REG(IT87_INIT_TEMP_HIGH_3));
+ it87_write_value(client, IT87_REG_TEMP_LOW(3),
+ TEMP_TO_REG(IT87_INIT_TEMP_LOW_3));
+
+ /* Enable voltage monitors */
+ it87_write_value(client, IT87_REG_VIN_ENABLE, 0xff);
+
+ /* Enable Temp1-Temp3 */
+ it87_write_value(client, IT87_REG_TEMP_ENABLE,
+ (it87_read_value(client, IT87_REG_TEMP_ENABLE) & 0xc0)
+ | (temp_type & 0x3f));
+
+ /* Enable fans */
+ it87_write_value(client, IT87_REG_FAN_CTRL,
+ (it87_read_value(client, IT87_REG_FAN_CTRL) & 0x8f)
+ | 0x70);
+
+ /* Start monitoring */
+ it87_write_value(client, IT87_REG_CONFIG,
+ (it87_read_value(client, IT87_REG_CONFIG) & 0xb7)
+ | (update_vbat ? 0x41 : 0x01));
+}
+
+static void it87_update_client(struct i2c_client *client)
+{
+ struct it87_data *data = i2c_get_clientdata(client);
+ int i;
+
+ down(&data->update_lock);
+
+ if ((jiffies - data->last_updated > HZ + HZ / 2) ||
+ (jiffies < data->last_updated) || !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 = 1; i <= 3; i++) {
+ data->fan[i - 1] =
+ it87_read_value(client, IT87_REG_FAN(i));
+ data->fan_min[i - 1] =
+ it87_read_value(client, IT87_REG_FAN_MIN(i));
+ }
+ for (i = 1; i <= 3; i++) {
+ data->temp[i - 1] =
+ it87_read_value(client, IT87_REG_TEMP(i));
+ data->temp_high[i - 1] =
+ it87_read_value(client, IT87_REG_TEMP_HIGH(i));
+ data->temp_low[i - 1] =
+ it87_read_value(client, IT87_REG_TEMP_LOW(i));
+ }
+
+ /* The 8705 does not have VID capability */
+ /*if (data->type == it8712) {
+ data->vid = it87_read_value(client, IT87_REG_VID);
+ data->vid &= 0x1f;
+ }
+ else */ {
+ data->vid = 0x1f;
+ }
+
+ 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] = 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->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ up(&data->update_lock);
+}
+
+static int __init sm_it87_init(void)
+{
+ return i2c_add_driver(&it87_driver);
+}
+
+static void __exit sm_it87_exit(void)
+{
+ i2c_del_driver(&it87_driver);
+}
+
+
+MODULE_AUTHOR("Chris Gauthron <chrisg at 0-in.com>");
+MODULE_DESCRIPTION("IT8705F, IT8712F, Sis950 driver");
+MODULE_PARM(update_vbat, "i");
+MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
+MODULE_PARM(temp_type, "i");
+MODULE_PARM_DESC(temp_type, "Temperature sensor type, normally leave unset");
+MODULE_LICENSE("GPL");
+
+module_init(sm_it87_init);
+module_exit(sm_it87_exit);
diff -Nru linux-2.5.68/drivers/i2c/chips/Kconfig linux-2.5.68-it87/drivers/i2c/chips/Kconfig
--- linux-2.5.68/drivers/i2c/chips/Kconfig 2003-04-24 09:46:09.000000000 -0500
+++ linux-2.5.68-it87/drivers/i2c/chips/Kconfig 2003-04-24 09:57:32.000000000 -0500
@@ -64,10 +64,20 @@
in the lm_sensors package, which you can download at
http://www.lm-sensors.nu
+config SENSORS_IT87
+ tristate " ITE IT87 and compatibles"
+ depends on I2C && EXPERIMENTAL
+ help
+ The module will be called it87.
+
+ You will also need the latest user-space utilties: you can find them
+ in the lm_sensors package, which you can download at
+ http://www.lm-sensors.nu
+
config I2C_SENSOR
tristate
- default y if SENSORS_ADM1021=y || SENSORS_LM75=y || SENSORS_VIA686A=y || SENSORS_W83781D=y
- default m if SENSORS_ADM1021=m || SENSORS_LM75=m || SENSORS_VIA686A=m || SENSORS_W83781D=m
+ default y if SENSORS_ADM1021=y || SENSORS_LM75=y || SENSORS_VIA686A=y || SENSORS_W83781D=y || SENSORS_IT87=y
+ default m if SENSORS_ADM1021=m || SENSORS_LM75=m || SENSORS_VIA686A=m || SENSORS_W83781D=m || SENSORS_IT87=m
default n
endmenu
diff -Nru linux-2.5.68/drivers/i2c/chips/Makefile linux-2.5.68-it87/drivers/i2c/chips/Makefile
--- linux-2.5.68/drivers/i2c/chips/Makefile 2003-04-24 09:46:03.000000000 -0500
+++ linux-2.5.68-it87/drivers/i2c/chips/Makefile 2003-04-24 09:55:21.000000000 -0500
@@ -6,3 +6,4 @@
obj-$(CONFIG_SENSORS_LM75) += lm75.o
obj-$(CONFIG_SENSORS_VIA686A) += via686a.o
obj-$(CONFIG_SENSORS_W83781D) += w83781d.o
+obj-$(CONFIG_SENSORS_IT87) += it87.o
--
"NT is to UNIX what a doughnut is to a particle accelerator."
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