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Kirill Smelkov
linux
Commits
5d9ccbf2
Commit
5d9ccbf2
authored
Apr 23, 2003
by
Florin Iucha
Committed by
Christoph Hellwig
Apr 23, 2003
Browse files
Options
Browse Files
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Plain Diff
[PATCH] i2c: added it87 driver
parent
828b358c
Changes
3
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Showing
3 changed files
with
943 additions
and
2 deletions
+943
-2
drivers/i2c/chips/Kconfig
drivers/i2c/chips/Kconfig
+12
-2
drivers/i2c/chips/Makefile
drivers/i2c/chips/Makefile
+1
-0
drivers/i2c/chips/it87.c
drivers/i2c/chips/it87.c
+930
-0
No files found.
drivers/i2c/chips/Kconfig
View file @
5d9ccbf2
...
@@ -22,6 +22,16 @@ config SENSORS_ADM1021
...
@@ -22,6 +22,16 @@ config SENSORS_ADM1021
in the lm_sensors package, which you can download at
in the lm_sensors package, which you can download at
http://www.lm-sensors.nu
http://www.lm-sensors.nu
config SENSORS_IT87
tristate " National Semiconductors 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 SENSORS_LM75
config SENSORS_LM75
tristate " National Semiconductors LM75 and compatibles"
tristate " National Semiconductors LM75 and compatibles"
depends on I2C && EXPERIMENTAL
depends on I2C && EXPERIMENTAL
...
@@ -66,8 +76,8 @@ config SENSORS_W83781D
...
@@ -66,8 +76,8 @@ config SENSORS_W83781D
config I2C_SENSOR
config I2C_SENSOR
tristate
tristate
default y if SENSORS_ADM1021=y || SENSORS_LM75=y || SENSORS_VIA686A=y || SENSORS_W83781D=y
default y if SENSORS_ADM1021=y || SENSORS_
IT87=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 m if SENSORS_ADM1021=m || SENSORS_
IT87=m || SENSORS_
LM75=m || SENSORS_VIA686A=m || SENSORS_W83781D=m
default n
default n
endmenu
endmenu
drivers/i2c/chips/Makefile
View file @
5d9ccbf2
...
@@ -3,6 +3,7 @@
...
@@ -3,6 +3,7 @@
#
#
obj-$(CONFIG_SENSORS_ADM1021)
+=
adm1021.o
obj-$(CONFIG_SENSORS_ADM1021)
+=
adm1021.o
obj-$(CONFIG_SENSORS_IT87)
+=
it87.o
obj-$(CONFIG_SENSORS_LM75)
+=
lm75.o
obj-$(CONFIG_SENSORS_LM75)
+=
lm75.o
obj-$(CONFIG_SENSORS_VIA686A)
+=
via686a.o
obj-$(CONFIG_SENSORS_VIA686A)
+=
via686a.o
obj-$(CONFIG_SENSORS_W83781D)
+=
w83781d.o
obj-$(CONFIG_SENSORS_W83781D)
+=
w83781d.o
drivers/i2c/chips/it87.c
0 → 100644
View file @
5d9ccbf2
/*
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@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@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"
,
.
id
=
I2C_DRIVERID_IT87
,
.
flags
=
I2C_DF_NOTIFY
,
.
attach_adapter
=
it87_attach_adapter
,
.
detach_client
=
it87_detach_client
,
};
static
int
it87_id
=
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
ERROR2
;
/* 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
;
ERROR2:
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@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
);
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