| Kernel driver lineage-pem | |
| ========================= | |
| Supported devices: | |
| * Lineage Compact Power Line Power Entry Modules | |
| Prefix: 'lineage-pem' | |
| Addresses scanned: - | |
| Documentation: | |
| http://www.lineagepower.com/oem/pdf/CPLI2C.pdf | |
| Author: Guenter Roeck <linux@roeck-us.net> | |
| Description | |
| ----------- | |
| This driver supports various Lineage Compact Power Line DC/DC and AC/DC | |
| converters such as CP1800, CP2000AC, CP2000DC, CP2100DC, and others. | |
| Lineage CPL power entry modules are nominally PMBus compliant. However, most | |
| standard PMBus commands are not supported. Specifically, all hardware monitoring | |
| and status reporting commands are non-standard. For this reason, a standard | |
| PMBus driver can not be used. | |
| Usage Notes | |
| ----------- | |
| This driver does not probe for Lineage CPL devices, since there is no register | |
| which can be safely used to identify the chip. You will have to instantiate | |
| the devices explicitly. | |
| Example: the following will load the driver for a Lineage PEM at address 0x40 | |
| on I2C bus #1: | |
| $ modprobe lineage-pem | |
| $ echo lineage-pem 0x40 > /sys/bus/i2c/devices/i2c-1/new_device | |
| All Lineage CPL power entry modules have a built-in I2C bus master selector | |
| (PCA9541). To ensure device access, this driver should only be used as client | |
| driver to the pca9541 I2C master selector driver. | |
| Sysfs entries | |
| ------------- | |
| All Lineage CPL devices report output voltage and device temperature as well as | |
| alarms for output voltage, temperature, input voltage, input current, input power, | |
| and fan status. | |
| Input voltage, input current, input power, and fan speed measurement is only | |
| supported on newer devices. The driver detects if those attributes are supported, | |
| and only creates respective sysfs entries if they are. | |
| in1_input Output voltage (mV) | |
| in1_min_alarm Output undervoltage alarm | |
| in1_max_alarm Output overvoltage alarm | |
| in1_crit Output voltage critical alarm | |
| in2_input Input voltage (mV, optional) | |
| in2_alarm Input voltage alarm | |
| curr1_input Input current (mA, optional) | |
| curr1_alarm Input overcurrent alarm | |
| power1_input Input power (uW, optional) | |
| power1_alarm Input power alarm | |
| fan1_input Fan 1 speed (rpm, optional) | |
| fan2_input Fan 2 speed (rpm, optional) | |
| fan3_input Fan 3 speed (rpm, optional) | |
| temp1_input | |
| temp1_max | |
| temp1_crit | |
| temp1_alarm | |
| temp1_crit_alarm | |
| temp1_fault |