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author | Akira Shimahara <akira215corp@gmail.com> | 2020-05-11 23:38:01 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-15 17:29:00 +0300 |
commit | e2c94d6f572079511945e64537eb1218643f2e68 (patch) | |
tree | c3a49f9816cb8d93a98888edc4e15cabd55451b4 /drivers/pinctrl | |
parent | 67b392f7b8edfa6f427fecd98722acab34c1c99f (diff) | |
download | linux-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>
Diffstat (limited to 'drivers/pinctrl')
0 files changed, 0 insertions, 0 deletions