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lib: psci: early suspend handler for platforms

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This patch adds an early suspend handler, that executes with
SMP and data cache enabled. This handler allows platforms to
perform any early actions during the CPU suspend entry sequence.

This handler is optional and platforms can choose to implement it
depending on their needs. The `pwr_domain_suspend` handler still
exists and platforms can keep on using it without any side effects.

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2017-07-10 16:02:05 -07:00
parent e43ae8e9de
commit 1862d6203c
4 changed files with 37 additions and 6 deletions
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2
include/lib/psci/psci.h
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@ -267,6 +267,8 @@ typedef struct plat_psci_ops {
void (*cpu_standby)(plat_local_state_t cpu_state);
int (*pwr_domain_on)(u_register_t mpidr);
void (*pwr_domain_off)(const psci_power_state_t *target_state);
void (*pwr_domain_suspend_pwrdown_early)(
const psci_power_state_t *target_state);
void (*pwr_domain_suspend)(const psci_power_state_t *target_state);
void (*pwr_domain_on_finish)(const psci_power_state_t *target_state);
void (*pwr_domain_suspend_finish)(