• Sudeep Holla's avatar
    PM / sleep: enable suspend-to-idle even without registered suspend_ops · fa7fd6fa
    Sudeep Holla authored
    Suspend-to-idle (aka the "freeze" sleep state) is a system sleep state
    in which all of the processors enter deepest possible idle state and
    wait for interrupts right after suspending all the devices.
    
    There is no hard requirement for a platform to support and register
    platform specific suspend_ops to enter suspend-to-idle/freeze state.
    Only deeper system sleep states like PM_SUSPEND_STANDBY and
    PM_SUSPEND_MEM rely on such low level support/implementation.
    
    suspend-to-idle can be entered as along as all the devices can be
    suspended. This patch enables the support for suspend-to-idle even on
    systems that don't have any low level support for deeper system sleep
    states and/or don't register any platform specific suspend_ops.
    Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
    Tested-by: default avatarAndy Gross <andy.gross@linaro.org>
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    fa7fd6fa
main.c 15.4 KB