| From: |
| Avri Altman <avri.altman-AT-wdc.com> |
| To: |
| "James E . J . Bottomley" <jejb-AT-linux.vnet.ibm.com>, "Martin K . Petersen" <martin.petersen-AT-oracle.com> |
| Subject: |
| [PATCH v7 0/2] Add temperature notification support |
| Date: |
| Wed, 15 Sep 2021 09:04:05 +0300 |
| Message-ID: |
| <20210915060407.40-1-avri.altman@wdc.com> |
| Cc: |
| linux-scsi-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, Bart Van Assche <bvanassche-AT-acm.org>, Adrian Hunter <adrian.hunter-AT-intel.com>, Bean Huo <beanhuo-AT-micron.com>, Guenter Roeck <linux-AT-roeck-us.net>, Avri Altman <avri.altman-AT-wdc.com> |
| Archive-link: |
| Article |
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-...
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
