From: lorenzo.pieralisi@arm.com (Lorenzo Pieralisi)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/5] drivers: firmware: psci: add basic v1.0 support
Date: Wed, 8 Jul 2015 18:16:46 +0100 [thread overview]
Message-ID: <1436375811-10529-1-git-send-email-lorenzo.pieralisi@arm.com> (raw)
This series is a v2 of a previous posting:
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-May/347352.html
v1 -> v2:
- rebased against v4.2-rc1
- added version to 1.0 specific macros
The PSCI v1.0 specification[1] introduces a brand new set of features
(ie OS initiated mode and system suspend being the most notable ones)
and provides updates to the PSCI 0.2 specification, keeping backward
compatibility.
PSCI v1.0 applies minor changes to function return codes and function
behaviour (ie AFFINITY_INFO requirements, INVALID_ADDRESS return value)
and introduces a new power_state parameter format (extended stateid)
that is probeable with the newly introduced PSCI_FEATURES call.
This series upgrades the current kernel PSCI layer implementation with
a set of patches that make the kernel PSCI v1.0 compliant.
The series augments the PSCI firmware layer with a hook to retrieve
the features for a specific PSCI function (ie based on the PSCI_FEATURES
call) and uses it to detect the power_state parameter format, updating
the power_state parameter handling functions accordingly.
In order to prevent firmware interfaces mismatch, a new compatible
string is added to the DT bindings to characterize a 1.0 compliant
firmware interface.
The series is built on top of M.Rutland's patch series:
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/353795.html
Tested on a Juno board.
[1] http://infocenter.arm.com/help/topic/com.arm.doc.den0022c/DEN0022C_Power_State_Coordination_Interface.pdf
Lorenzo Pieralisi (5):
drivers: firmware: psci: add INVALID_ADDRESS return value
drivers: firmware: psci: move power_state handling to generic code
drivers: firmware: psci: add PSCI_FEATURES call
drivers: firmware: psci: add extended stateid power_state support
drivers: firmware: psci: add PSCI v1.0 DT bindings
Documentation/devicetree/bindings/arm/psci.txt | 6 +++
arch/arm64/kernel/psci.c | 14 -------
drivers/firmware/psci.c | 53 ++++++++++++++++++++++++++
include/linux/psci.h | 2 +
include/uapi/linux/psci.h | 15 ++++++++
5 files changed, 76 insertions(+), 14 deletions(-)
--
2.2.1
next reply other threads:[~2015-07-08 17:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-08 17:16 Lorenzo Pieralisi [this message]
2015-07-08 17:16 ` [PATCH v2 1/5] drivers: firmware: psci: add INVALID_ADDRESS return value Lorenzo Pieralisi
2015-07-08 17:16 ` [PATCH v2 2/5] drivers: firmware: psci: move power_state handling to generic code Lorenzo Pieralisi
2015-07-09 13:39 ` Catalin Marinas
2015-07-08 17:16 ` [PATCH v2 3/5] drivers: firmware: psci: add PSCI_FEATURES call Lorenzo Pieralisi
2015-07-08 17:16 ` [PATCH v2 4/5] drivers: firmware: psci: add extended stateid power_state support Lorenzo Pieralisi
2015-10-22 22:07 ` Kevin Hilman
2015-10-23 10:23 ` Arnd Bergmann
2015-10-23 10:44 ` Lorenzo Pieralisi
2015-10-23 10:55 ` Arnd Bergmann
2015-10-23 11:36 ` Lorenzo Pieralisi
2015-10-23 15:10 ` Kevin Hilman
2015-10-26 10:05 ` Lorenzo Pieralisi
2015-07-08 17:16 ` [PATCH v2 5/5] drivers: firmware: psci: add PSCI v1.0 DT bindings Lorenzo Pieralisi
2015-10-05 11:48 ` Andre Przywara
2015-10-05 12:06 ` Mark Rutland
2015-10-05 12:11 ` Lorenzo Pieralisi
2015-09-14 13:35 ` [PATCH v2 0/5] drivers: firmware: psci: add basic v1.0 support Lorenzo Pieralisi
2015-09-15 3:23 ` Jisheng Zhang
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