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From: Avri Altman <avri.altman@wdc.com>
To: "James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
	Bart Van Assche <bvanassche@acm.org>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Bean Huo <beanhuo@micron.com>, Guenter Roeck <linux@roeck-us.net>,
	Avri Altman <avri.altman@wdc.com>
Subject: [PATCH v2 0/2] Add temperature notification support
Date: Thu,  9 Sep 2021 09:34:42 +0300	[thread overview]
Message-ID: <20210909063444.22407-1-avri.altman@wdc.com> (raw)

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     |  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

-- 
2.17.1


             reply	other threads:[~2021-09-09  6:52 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-09  6:34 Avri Altman [this message]
2021-09-09  6:34 ` [PATCH v2 1/2] scsi: ufs: Probe for temperature notification support Avri Altman
2021-09-09 16:26   ` Bart Van Assche
2021-09-10 15:58     ` Avri Altman
2021-09-09 16:51   ` Guenter Roeck
2021-09-10 16:13     ` Avri Altman
2021-09-09  6:34 ` [PATCH v2 2/2] scsi: ufs: Add temperature notification exception handling Avri Altman
2021-09-09 16:54   ` Guenter Roeck
2021-09-10 16:32     ` Avri Altman

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