git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1915fb70 AP |
1 | Kernel driver tmp421 |
| 2 | ==================== | |
| 3 | ||
| 4 | Supported chips: | |
| 5 | * Texas Instruments TMP421 | |
| 6 | Prefix: 'tmp421' | |
| 7 | Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f | |
| 8 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html | |
| 9 | * Texas Instruments TMP422 | |
| 10 | Prefix: 'tmp422' | |
| 11 | Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f | |
| 12 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html | |
| 13 | * Texas Instruments TMP423 | |
| 14 | Prefix: 'tmp423' | |
| 15 | Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f | |
| 16 | Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html | |
| 17 | ||
| 18 | Authors: | |
| 19 | Andre Prendel <andre.prendel@gmx.de> | |
| 20 | ||
| 21 | Description | |
| 22 | ----------- | |
| 23 | ||
| 24 | This driver implements support for Texas Instruments TMP421, TMP422 | |
| 25 | and TMP423 temperature sensor chips. These chips implement one local | |
| 26 | and up to one (TMP421), up to two (TMP422) or up to three (TMP423) | |
| 27 | remote sensors. Temperature is measured in degrees Celsius. The chips | |
| 28 | are wired over I2C/SMBus and specified over a temperature range of -40 | |
| 29 | to +125 degrees Celsius. Resolution for both the local and remote | |
| 30 | channels is 0.0625 degree C. | |
| 31 | ||
| 32 | The chips support only temperature measurement. The driver exports | |
| 33 | the temperature values via the following sysfs files: | |
| 34 | ||
| 35 | temp[1-4]_input | |
| 36 | temp[2-4]_fault |