Messages in this thread | | | From | Cristian Marussi <> | Subject | [PATCH v2 0/1] SCMI SystemPower Control driver | Date | Mon, 26 Oct 2020 20:55:30 +0000 |
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Hi all,
This patch, building on top of the recently introduced SCMI System Power Protocol support, adds a new SCMI driver which, registering for SCMI System Power notifications, acts accordingly to satisfy such SCMI plaform system-wide transition requests (which can be of forceful or graceful kind)
In order to comply with graceful requests, and co-operate with userspace entities to drive a clean shutdown/reboot, the logic of the driver relies on the same orderly_* API methods used by ACPI when handling ACPI Shutdown bus events. As an alternative method to tunnel graceful requests to userspace, though, it is possible to configure, via module parameters, a specific signal to be sent to CAD pid.
It is currently based on for-next/scmi [1] on top of:
commit b9ceca6be432 ("firmware: arm_scmi: Fix duplicate workqueue name")
Thanks,
Cristian
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git/log/?h=for-next/scmi
Cristian Marussi (1): firmware: arm_scmi: Add SCMI System Power Control driver
drivers/firmware/Kconfig | 12 + drivers/firmware/arm_scmi/Makefile | 1 + .../firmware/arm_scmi/scmi_power_control.c | 387 ++++++++++++++++++ 3 files changed, 400 insertions(+) create mode 100644 drivers/firmware/arm_scmi/scmi_power_control.c
-- 2.17.1
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