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drivers: firmware: psci: add system suspend support
PSCI v1.0 introduces a new API called PSCI_SYSTEM_SUSPEND. This API provides the mechanism by which the calling OS can request entry into the deepest possible system sleep state. It meets all the necessary preconditions for entering suspend to RAM state in Linux. This patch adds support for PSCI_SYSTEM_SUSPEND in psci firmware and registers a psci system suspend operation to implement the suspend-to-RAM(s2r) in a generic way on all the platforms implementing PSCI. Cc: Mark Rutland <[email protected]> Cc: Lorenzo Pieralisi <[email protected]> Signed-off-by: Sudeep Holla <[email protected]>
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