Commit c4f99a2b authored by Jean Delvare's avatar Jean Delvare Committed by Jean Delvare

hwmon: (lm90) Add support for the W83L771W/G

I was wondering if that chip ever existed publicly... Apparently yes,
so add support for it.
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Tested-by: default avatarAlexander Stein <alexander.stein@informatik.tu-chemnitz.de>
Acked-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
parent 0c01b644
......@@ -95,6 +95,10 @@ Supported chips:
0x4c, 0x4d and 0x4e
Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/datasheet/index.mvp/id/4199
* Winbond/Nuvoton W83L771W/G
Prefix: 'w83l771'
Addresses scanned: I2C 0x4c
Datasheet: No longer available
* Winbond/Nuvoton W83L771AWG/ASG
Prefix: 'w83l771'
Addresses scanned: I2C 0x4c
......@@ -169,11 +173,15 @@ MAX6695 and MAX6696:
* Second critical temperature limit
* Two remote sensors
W83L771W/G
* The G variant is lead-free, otherwise similar to the W.
* Filter and alert configuration register at 0xBF
* Moving average (depending on conversion rate)
W83L771AWG/ASG
* Successor of the W83L771W/G, same features.
* 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
is 1.0 degree for the local temperature, 0.125 degree for the remote
......
......@@ -615,7 +615,7 @@ config SENSORS_LM90
LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, Maxim
MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659,
MAX6680, MAX6681, MAX6692, MAX6695, MAX6696, and Winbond/Nuvoton
W83L771AWG/ASG sensor chips.
W83L771W/G/AWG/ASG sensor chips.
This driver can also be built as a module. If so, the module
will be called lm90.
......
......@@ -88,8 +88,8 @@
* Addresses to scan
* Address is fully defined internally and cannot be changed except for
* MAX6659, MAX6680 and MAX6681.
* LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657
* and MAX6658 have address 0x4c.
* LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6649, MAX6657,
* MAX6658 and W83L771 have address 0x4c.
* ADM1032-2, ADT7461-2, LM89-1, LM99-1 and MAX6646 have address 0x4d.
* MAX6647 has address 0x4e.
* MAX6659 can have address 0x4c, 0x4d or 0x4e.
......@@ -1237,10 +1237,23 @@ static int lm90_detect(struct i2c_client *new_client,
} 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";
int reg_config2;
reg_config2 = i2c_smbus_read_byte_data(new_client,
LM90_REG_R_CONFIG2);
if (reg_config2 < 0)
return -ENODEV;
if ((reg_config1 & 0x2A) == 0x00
&& (reg_config2 & 0xF8) == 0x00) {
if (chip_id == 0x01 /* W83L771W/G */
&& reg_convrate <= 0x09) {
name = "w83l771";
} else
if ((chip_id & 0xFE) == 0x10 /* W83L771AWG/ASG */
&& reg_convrate <= 0x08) {
name = "w83l771";
}
}
}
......
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