[PATCH v2 0/2] Add temperature notification support

From: Avri Altman
Date: Thu Sep 09 2021 - 02:35:19 EST

v1 -> v2:
- Add a hw monitor device if both the platform & the device support it
- Remove the sysfs patch: no need to duplicate /sys/class/hwmon

UFS3.0 allows using the ufs device as a temperature sensor. The purpose
of this optional feature is to provide notification to the host of the
UFS device case temperature. It allows reading of a rough estimate
(+-10 degrees centigrade) of the current case temperature, and setting a
lower and upper temperature bounds, in which the device will trigger an
applicable exception event.

A previous attempt [1] tried a comprehensive approach. Still, it was
unsuccessful. Here is a more modest approach that introduces just the
bare minimum to support temperature notification.


[1] https://lore.kernel.org/lkml/1582450522-13256-1-git-send-email-avi.shchislowski@xxxxxxx/

Avri Altman (2):
scsi: ufs: Probe for temperature notification support
scsi: ufs: Add temperature notification exception handling

drivers/scsi/ufs/Kconfig | 10 ++
drivers/scsi/ufs/Makefile | 1 +
drivers/scsi/ufs/ufs-hwmon.c | 180 +++++++++++++++++++++++++++++++++++
drivers/scsi/ufs/ufs.h | 8 ++
drivers/scsi/ufs/ufshcd.c | 46 +++++++++
drivers/scsi/ufs/ufshcd.h | 18 ++++
6 files changed, 263 insertions(+)
create mode 100644 drivers/scsi/ufs/ufs-hwmon.c