projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 7cb6dcff AD |
1 | Kernel driver ina3221 |
| 2 | ===================== | |
| 3 | ||
| 4 | Supported chips: | |
| 5 | * Texas Instruments INA3221 | |
| 6 | Prefix: 'ina3221' | |
| 7 | Addresses: I2C 0x40 - 0x43 | |
| 8 | Datasheet: Publicly available at the Texas Instruments website | |
| 9 | http://www.ti.com/ | |
| 10 | ||
| 11 | Author: Andrew F. Davis <afd@ti.com> | |
| 12 | ||
| 13 | Description | |
| 14 | ----------- | |
| 15 | ||
| 16 | The Texas Instruments INA3221 monitors voltage, current, and power on the high | |
| 17 | side of up to three D.C. power supplies. The INA3221 monitors both shunt drop | |
| 18 | and supply voltage, with programmable conversion times and averaging, current | |
| 19 | and power are calculated host-side from these. | |
| 20 | ||
| 21 | Sysfs entries | |
| 22 | ------------- | |
| 23 | ||
| a9e9dd9c NC |
24 | in[123]_label Voltage channel labels |
| 25 | in[123]_enable Voltage channel enable controls | |
| 7cb6dcff AD |
26 | in[123]_input Bus voltage(mV) channels |
| 27 | curr[123]_input Current(mA) measurement channels | |
| 28 | shunt[123]_resistor Shunt resistance(uOhm) channels | |
| 29 | curr[123]_crit Critical alert current(mA) setting, activates the | |
| 30 | corresponding alarm when the respective current | |
| 31 | is above this value | |
| 32 | curr[123]_crit_alarm Critical alert current limit exceeded | |
| 33 | curr[123]_max Warning alert current(mA) setting, activates the | |
| 34 | corresponding alarm when the respective current | |
| 35 | average is above this value. | |
| 36 | curr[123]_max_alarm Warning alert current limit exceeded | |
| 37 | in[456]_input Shunt voltage(uV) for channels 1, 2, and 3 respectively | |
| 5c090abf NC |
38 | samples Number of samples using in the averaging mode. |
| 39 | Supports the list of number of samples: | |
| 40 | 1, 4, 16, 64, 128, 256, 512, 1024 |