From 18910ab0d916b1a87016d69efd027714a80521dd Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Fri, 27 Sep 2013 10:25:02 +0100 Subject: [PATCH] arm64: add PSCI CPU_SUSPEND based cpu_suspend support This patch implements the cpu_suspend cpu operations method through the PSCI CPU SUSPEND API. The PSCI implementation translates the idle state index passed by the cpu_suspend core call into a valid PSCI state according to the PSCI states initialized at boot through the cpu_init_idle() CPU operations hook. The PSCI CPU suspend operation hook checks if the PSCI state is a standby state. If it is, it calls the PSCI suspend implementation straight away, without saving any context. If the state is a power down state the kernel calls the __cpu_suspend API (that saves the CPU context) and passed the PSCI suspend finisher as a parameter so that PSCI can be called by the __cpu_suspend implementation after saving and flushing the context as last function before power down. For power down states, entry point is set to cpu_resume physical address, that represents the default kernel execution address following a CPU reset. Reviewed-by: Ashwin Chaugule Reviewed-by: Catalin Marinas Signed-off-by: Lorenzo Pieralisi Signed-off-by: Catalin Marinas --- Reading git-format-patch failed