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hwmon: (lm90) Add support for the Winbond/Nuvoton W83L771AWG/ASG

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This chips is found on several Zotac Ion ITX boards, amongst others.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: MC Matti <mcmatti17@googlemail.com>
Cc: Manuel Lamotte-Schubert <mls@pronego.com>
This commit is contained in:
Jean Delvare 2010-03-05 22:17:13 +01:00
parent 64ba992675
commit 6771ea1fff
3 changed files with 24 additions and 3 deletions
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10
Documentation/hwmon/lm90
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@ -84,6 +84,10 @@ Supported chips:
Addresses scanned: I2C 0x4c Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the Maxim website Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3500 http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3500
* Winbond/Nuvoton W83L771AWG/ASG
Prefix: 'w83l771'
Addresses scanned: I2C 0x4c
Datasheet: Not publicly available, can be requested from Nuvoton
Author: Jean Delvare <khali@linux-fr.org> Author: Jean Delvare <khali@linux-fr.org>
@ -147,6 +151,12 @@ MAX6680 and MAX6681:
* Selectable address * Selectable address
* Remote sensor type selection * Remote sensor type selection
W83L771AWG/ASG
* The AWG and ASG variants only differ in package format.
* Filter and alert configuration register at 0xBF
* Diode ideality factor configuration (remote sensor) at 0xE3
* Moving average (depending on conversion rate)
All temperature values are given in degrees Celsius. Resolution All temperature values are given in degrees Celsius. Resolution
is 1.0 degree for the local temperature, 0.125 degree for the remote is 1.0 degree for the local temperature, 0.125 degree for the remote
temperature, except for the MAX6657, MAX6658 and MAX6659 which have a temperature, except for the MAX6657, MAX6658 and MAX6659 which have a

5
drivers/hwmon/Kconfig
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@ -563,9 +563,10 @@ config SENSORS_LM90
depends on I2C depends on I2C
help help
If you say yes here you get support for National Semiconductor LM90, If you say yes here you get support for National Semiconductor LM90,
LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, and Maxim LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, Maxim
MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659, MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659,
MAX6680, MAX6681 and MAX6692 sensor chips. MAX6680, MAX6681 and MAX6692, and Winbond/Nuvoton W83L771AWG/ASG
sensor chips.
This driver can also be built as a module. If so, the module This driver can also be built as a module. If so, the module
will be called lm90. will be called lm90.

12
drivers/hwmon/lm90.c
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@ -93,7 +93,8 @@
static const unsigned short normal_i2c[] = { static const unsigned short normal_i2c[] = {
0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END }; 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END };
enum chips { lm90, adm1032, lm99, lm86, max6657, adt7461, max6680, max6646 }; enum chips { lm90, adm1032, lm99, lm86, max6657, adt7461, max6680, max6646,
w83l771 };
/* /*
* The LM90 registers * The LM90 registers
@ -173,6 +174,7 @@ static const struct i2c_device_id lm90_id[] = {
{ "max6659", max6657 }, { "max6659", max6657 },
{ "max6680", max6680 }, { "max6680", max6680 },
{ "max6681", max6680 }, { "max6681", max6680 },
{ "w83l771", w83l771 },
{ } { }
}; };
MODULE_DEVICE_TABLE(i2c, lm90_id); MODULE_DEVICE_TABLE(i2c, lm90_id);
@ -758,6 +760,14 @@ static int lm90_detect(struct i2c_client *new_client,
&& reg_convrate <= 0x07) { && reg_convrate <= 0x07) {
name = "max6646"; name = "max6646";
} }
} else
if (address == 0x4C
&& man_id == 0x5C) { /* Winbond/Nuvoton */
if ((chip_id & 0xFE) == 0x10 /* W83L771AWG/ASG */
&& (reg_config1 & 0x2A) == 0x00
&& reg_convrate <= 0x08) {
name = "w83l771";
}
} }
if (!name) { /* identification failed */ if (!name) { /* identification failed */