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authorAkira Shimahara <akira215corp@gmail.com>2020-05-11 23:38:01 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-05-15 17:29:00 +0300
commite2c94d6f572079511945e64537eb1218643f2e68 (patch)
treec3a49f9816cb8d93a98888edc4e15cabd55451b4 /drivers/pinctrl
parent67b392f7b8edfa6f427fecd98722acab34c1c99f (diff)
downloadlinux-e2c94d6f572079511945e64537eb1218643f2e68.tar.xz
w1_therm: adding alarm sysfs entry
Adding device alarms settings by a dedicated sysfs entry alarms (RW): read or write TH and TL in the device RAM. Checking devices in alarm state could be performed using the master search command. As alarms temperature level are store in a 8 bit register on the device and are signed values, a safe cast shall be performed using the min and max temperature that device are able to measure. This is done by int_to_short inline function. A 'write_data' field is added in the device structure, to bind the correct writing function, as some devices may have 2 or 3 bytes RAM. Updating Documentation/ABI/testing/sysfs-driver-w1_therm accordingly. Signed-off-by: Akira Shimahara <akira215corp@gmail.com> Link: https://lore.kernel.org/r/20200511203801.411253-1-akira215corp@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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