projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| de779015 | 1 | Kernel driver ltc4151 |
| 2 | ===================== | |
| 3 | ||
| 4 | Supported chips: | |
| b04f2f7d | 5 | |
| de779015 | 6 | * Linear Technology LTC4151 |
| b04f2f7d | 7 | |
| de779015 | 8 | Prefix: 'ltc4151' |
| b04f2f7d | 9 | |
| de779015 | 10 | Addresses scanned: - |
| b04f2f7d | 11 | |
| de779015 | 12 | Datasheet: |
| b04f2f7d MCC |
13 | |
| 14 | http://www.linear.com/docs/Datasheet/4151fc.pdf | |
| de779015 | 15 | |
| 16 | Author: Per Dalen <per.dalen@appeartv.com> | |
| 17 | ||
| 18 | ||
| 19 | Description | |
| 20 | ----------- | |
| 21 | ||
| 22 | The LTC4151 is a High Voltage I2C Current and Voltage Monitor. | |
| 23 | ||
| 24 | ||
| 25 | Usage Notes | |
| 26 | ----------- | |
| 27 | ||
| 28 | This driver does not probe for LTC4151 devices, since there is no register | |
| 29 | which can be safely used to identify the chip. You will have to instantiate | |
| 30 | the devices explicitly. | |
| 31 | ||
| 32 | Example: the following will load the driver for an LTC4151 at address 0x6f | |
| b04f2f7d MCC |
33 | on I2C bus #0:: |
| 34 | ||
| 35 | # modprobe ltc4151 | |
| 36 | # echo ltc4151 0x6f > /sys/bus/i2c/devices/i2c-0/new_device | |
| de779015 | 37 | |
| 38 | ||
| 39 | Sysfs entries | |
| 40 | ------------- | |
| 41 | ||
| 42 | Voltage readings provided by this driver are reported as obtained from the ADIN | |
| 43 | and VIN registers. | |
| 44 | ||
| 45 | Current reading provided by this driver is reported as obtained from the Current | |
| 46 | Sense register. The reported value assumes that a 1 mOhm sense resistor is | |
| 47 | installed. | |
| 48 | ||
| b04f2f7d | 49 | ======================= ================== |
| de779015 | 50 | in1_input VDIN voltage (mV) |
| 51 | ||
| 52 | in2_input ADIN voltage (mV) | |
| 53 | ||
| 54 | curr1_input SENSE current (mA) | |
| b04f2f7d | 55 | ======================= ================== |