[PATCH v3 0/2] Add temperature notification support

From: Avri Altman
Date: Sun Sep 12 2021 - 09:19:29 EST


v2 -> v3:
- Attend Bart's & Guenter's comments

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.

Thanks,
Avri

[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 | 193 +++++++++++++++++++++++++++++++++++
drivers/scsi/ufs/ufs.h | 8 ++
drivers/scsi/ufs/ufshcd.c | 49 +++++++++
drivers/scsi/ufs/ufshcd.h | 20 ++++
6 files changed, 281 insertions(+)
create mode 100644 drivers/scsi/ufs/ufs-hwmon.c

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2.17.1