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Commit e29d11c6 authored by Sebastian Macke's avatar Sebastian Macke Committed by Stafford Horne
Browse files

openrisc: Initial support for the idle state 



This patch adds basic support for the idle state of the cpu.
The patch overrides the regular idle function, enables the interupts,
checks for the power management unit and enables the cpu doze mode
if available.

Signed-off-by: default avatarSebastian Macke <sebastian@macke.de>
[shorne@gmail.com: Fixed checkpatch, blankline after declarations]
Signed-off-by: default avatarStafford Horne <shorne@gmail.com>
parent 79f8a4d0

arch/openrisc/kernel/process.c

+11 −0
Original line number Diff line number Diff line
@@ -75,6 +75,17 @@ void machine_power_off(void) 
	__asm__("l.nop 1");

}



/*

 * Send the doze signal to the cpu if available.

 * Make sure, that all interrupts are enabled

 */

void arch_cpu_idle(void)

{

	local_irq_enable();

	if (mfspr(SPR_UPR) & SPR_UPR_PMP)

		mtspr(SPR_PMR, mfspr(SPR_PMR) | SPR_PMR_DME);

}



void (*pm_power_off) (void) = machine_power_off;



/*