Documentation/hwmon/ltc4215

   1 Kernel driver ltc4215
   2 =====================
   3
   4 Supported chips:
   5   * Linear Technology LTC4215
   6     Prefix: 'ltc4215'
   7     Addresses scanned: 0x44
   8     Datasheet:
   9         http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1006,C1163,P17572,D12697
  10
  11 Author: Ira W. Snyder <iws@ovro.caltech.edu>
  12
  13
  14 Description
  15 -----------
  16
  17 The LTC4215 controller allows a board to be safely inserted and removed
  18 from a live backplane.
  19
  20
  21 Usage Notes
  22 -----------
  23
  24 This driver does not probe for LTC4215 devices, due to the fact that some
  25 of the possible addresses are unfriendly to probing. You will have to
  26 instantiate the devices explicitly.
  27
  28 Example: the following will load the driver for an LTC4215 at address 0x44
  29 on I2C bus #0:
  30 $ modprobe ltc4215
  31 $ echo ltc4215 0x44 > /sys/bus/i2c/devices/i2c-0/new_device
  32
  33
  34 Sysfs entries
  35 -------------
  36
  37 The LTC4215 has built-in limits for overvoltage, undervoltage, and
  38 undercurrent warnings. This makes it very likely that the reference
  39 circuit will be used.
  40
  41 in1_input               input voltage
  42 in2_input               output voltage
  43
  44 in1_min_alarm           input undervoltage alarm
  45 in1_max_alarm           input overvoltage alarm
  46
  47 curr1_input             current
  48 curr1_max_alarm         overcurrent alarm
  49
  50 power1_input            power usage
  51 power1_alarm            power bad alarm