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| author | David George <david.george@ska.ac.za> | 2011-06-02 17:43:45 +0200 |
|---|---|---|
| committer | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-07-28 09:17:32 +0200 |
| commit | 731b4cace10f105a81d622b70f9a35f577612d63 (patch) | |
| tree | 7e575b889382ffd00ab2cf14f614cf525420550b /Documentation/hwmon/max1668 | |
| parent | Linux 3.0 (diff) | |
| download | linux-731b4cace10f105a81d622b70f9a35f577612d63.tar.xz linux-731b4cace10f105a81d622b70f9a35f577612d63.zip | |
hwmon: Driver for MAX1668
This patch adds support for MAX1668 and compatible temperature sensors.
Signed-off-by: David George <david.george@ska.ac.za>
[guenter.roeck@ericsson.com: minor cleanup of probe error path]
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'Documentation/hwmon/max1668')
| -rw-r--r-- | Documentation/hwmon/max1668 | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/Documentation/hwmon/max1668 b/Documentation/hwmon/max1668 new file mode 100644 index 000000000000..0616ed9758df --- /dev/null +++ b/Documentation/hwmon/max1668 @@ -0,0 +1,60 @@ +Kernel driver max1668 +===================== + +Supported chips: + * Maxim MAX1668, MAX1805 and MAX1989 + Prefix: 'max1668' + Addresses scanned: I2C 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e + Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX1668-MAX1989.pdf + +Author: + David George <david.george@ska.ac.za> + +Description +----------- + +This driver implements support for the Maxim MAX1668, MAX1805 and MAX1989 +chips. + +The three devices are very similar, but the MAX1805 has a reduced feature +set; only two remote temperature inputs vs the four avaible on the other +two ICs. + +The driver is able to distinguish between the devices and creates sysfs +entries as follows: + +MAX1805, MAX1668 and MAX1989: + +temp1_input ro local (ambient) temperature +temp1_max rw local temperature maximum threshold for alarm +temp1_max_alarm ro local temperature maximum threshold alarm +temp1_min rw local temperature minimum threshold for alarm +temp1_min_alarm ro local temperature minimum threshold alarm +temp2_input ro remote temperature 1 +temp2_max rw remote temperature 1 maximum threshold for alarm +temp2_max_alarm ro remote temperature 1 maximum threshold alarm +temp2_min rw remote temperature 1 minimum threshold for alarm +temp2_min_alarm ro remote temperature 1 minimum threshold alarm +temp3_input ro remote temperature 2 +temp3_max rw remote temperature 2 maximum threshold for alarm +temp3_max_alarm ro remote temperature 2 maximum threshold alarm +temp3_min rw remote temperature 2 minimum threshold for alarm +temp3_min_alarm ro remote temperature 2 minimum threshold alarm + +MAX1668 and MAX1989 only: +temp4_input ro remote temperature 3 +temp4_max rw remote temperature 3 maximum threshold for alarm +temp4_max_alarm ro remote temperature 3 maximum threshold alarm +temp4_min rw remote temperature 3 minimum threshold for alarm +temp4_min_alarm ro remote temperature 3 minimum threshold alarm +temp5_input ro remote temperature 4 +temp5_max rw remote temperature 4 maximum threshold for alarm +temp5_max_alarm ro remote temperature 4 maximum threshold alarm +temp5_min rw remote temperature 4 minimum threshold for alarm +temp5_min_alarm ro remote temperature 4 minimum threshold alarm + +Module Parameters +----------------- + +* read_only: int + Set to non-zero if you wish to prevent write access to alarm thresholds. |