Eric Lee / smarc-fsl-linux-kernel

14 Dec, 2010

1 commit

  • 0a6bf658c   hwmon: (ltc4215) make sysfs file match the alarm cause ... Browse Code »

    The ltc4215 driver used the chip's "power good" status bit to provide
    the power1_alarm file. This is wrong: the chip is really reporting the
    status of one of the monitored voltages.

    Change the sysfs file from power1_alarm to in2_min_alarm instead. This
    matches the voltage that the chip is raising an alarm for.

    Signed-off-by: Ira W. Snyder
    Signed-off-by: Guenter Roeck

    Ira W. Snyder
     

05 Oct, 2009

1 commit

  • 2d2a7cff1   ltc4215/ltc4245: Discard obsolete detect methods ... Browse Code »

    There is no point in implementing a detect callback for the LTC4215
    and LTC4245, as these devices can't be detected. It was there solely
    to handle "force" module parameters to instantiate devices, but now
    we have a better sysfs interface that can do the same.

    So we can get rid of the ugly module parameters and the detect
    callbacks. This shrinks the binary module sizes by 36% and 46%,
    respectively.

    Signed-off-by: Jean Delvare
    Cc: Ira W. Snyder

    Jean Delvare
     

24 Sep, 2009

1 commit

  • b6b9d6960   hwmon: (ltc4215) Clear faults at startup ... Browse Code »

    When power is applied to the ltc4215 chip it sometimes reports spurious
    faults. The faults are not yet exposed via sysfs, however it may be useful
    for userspace to read the fault register directly with the i2cget command.
    Clear the fault register when the driver is installed so userspace doesn't
    have to worry about spurious fault indications.

    Signed-off-by: Ira W. Snyder
    Signed-off-by: Jean Delvare

    Ira W. Snyder
     

01 Apr, 2009

1 commit

  • 72f5de92e   hwmon: Add LTC4215 driver ... Browse Code »

    Add Linux support for the Linear Technology LTC4215 Hot Swap controller
    I2C monitoring interface.

    I have tested the driver with my board, and it appears to work fine. With
    the power supplies disabled, it reads 11.93V input, 1.93V output, no
    current and no power. With the supplies enabled, it reads 11.93V input,
    11.98V output, no current, no power. I'm not drawing any current at the
    moment, so this is reasonable. The value in the sense register never
    reads anything except 0, so I expect to get zero from the current and
    power calculations.

    I didn't attempt to support changing any of the chip's settings or
    enabling the FET. I'm not sure even how to do that and still fit within
    the hwmon framework. :)

    Signed-off-by: Ira W. Snyder
    Cc: Jean Delvare
    Cc: "Mark M. Hoffman"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ira Snyder