| 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 available 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. |
