Messages in this thread | | | From | Avri Altman <> | Subject | [PATCH v7 0/2] Add temperature notification support | Date | Wed, 15 Sep 2021 09:04:05 +0300 |
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v6 -> v7: - some more useless initializations
v5 -> v6: - remove useless initializations
v4 - > v5: - Fix improper return error values v3 -> v4: - Attend Guenter's comments
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@wdc.com/
Avri Altman (2): scsi: ufs: Probe for temperature notification support scsi: ufs: Add temperature notification exception handling
drivers/scsi/ufs/Kconfig | 9 ++ drivers/scsi/ufs/Makefile | 1 + drivers/scsi/ufs/ufs-hwmon.c | 210 +++++++++++++++++++++++++++++++++++ drivers/scsi/ufs/ufs.h | 7 ++ drivers/scsi/ufs/ufshcd.c | 47 ++++++++ drivers/scsi/ufs/ufshcd.h | 20 ++++ 6 files changed, 294 insertions(+) create mode 100644 drivers/scsi/ufs/ufs-hwmon.c
-- 2.17.1
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