lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

hwmon/lm90: Add support for the Maxim MAX6680/MAX6681

Browse Source 
Signed-off-by: Rainer Birkenmaier <rainer.birkenmaier@siemens.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Rainer Birkenmaier
2007-06-09 10:11:16 -04:00
committed by Mark M. Hoffman
parent 2df6d81157
commit 32c82a9347
3 changed files with 85 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
Documentation/hwmon/lm90
View File

@@ -48,6 +48,18 @@ Supported chips:
Addresses scanned: I2C 0x4c, 0x4d (unsupported 0x4e)
Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2578
* Maxim MAX6680
Prefix: 'max6680'
Addresses scanned: I2C 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b,
0x4c, 0x4d and 0x4e
Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3370
* Maxim MAX6681
Prefix: 'max6680'
Addresses scanned: I2C 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b,
0x4c, 0x4d and 0x4e
Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3370
Author: Jean Delvare <khali@linux-fr.org>
@@ -59,11 +71,15 @@ Description
The LM90 is a digital temperature sensor. It senses its own temperature as
well as the temperature of up to one external diode. It is compatible
with many other devices such as the LM86, the LM89, the LM99, the ADM1032,
the MAX6657, MAX6658 and the MAX6659 all of which are supported by this driver.
Note that there is no easy way to differentiate between the last three
variants. The extra address and features of the MAX6659 are not supported by
this driver. Additionally, the ADT7461 is supported if found in ADM1032
compatibility mode.
the MAX6657, MAX6658, MAX6659, MAX6680 and the MAX6681 all of which are
supported by this driver.
Note that there is no easy way to differentiate between the MAX6657,
MAX6658 and MAX6659 variants. The extra address and features of the
MAX6659 are not supported by this driver. The MAX6680 and MAX6681 only
differ in their pinout, therefore they obviously can't (and don't need to)
be distinguished. Additionally, the ADT7461 is supported if found in
ADM1032 compatibility mode.
The specificity of this family of chipsets over the ADM1021/LM84
family is that it features critical limits with hysteresis, and an
@@ -93,18 +109,22 @@ ADM1032:
* ALERT is triggered by open remote sensor.
* SMBus PEC support for Write Byte and Receive Byte transactions.
ADT7461
ADT7461:
* Extended temperature range (breaks compatibility)
* Lower resolution for remote temperature
MAX6657 and MAX6658:
* Remote sensor type selection
MAX6659
MAX6659:
* Selectable address
* Second critical temperature limit
* Remote sensor type selection
MAX6680 and MAX6681:
* Selectable address
* Remote sensor type selection
All temperature values are given in degrees Celsius. Resolution
is 1.0 degree for the local temperature, 0.125 degree for the remote
temperature.