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powerpc/85xx: add DOZE/NAP support for e500 core

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The e500 core enter DOZE/NAP power-saving modes when the core go to
cpu_idle routine.

The power management default running mode is DOZE, If the user

echo 1 > /proc/sys/kernel/powersave-nap

the system will change to NAP running mode.

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala
2008-06-18 16:26:52 -05:00
parent 3dfa877367
commit fc4033b2f8
11 changed files with 152 additions and 14 deletions
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5
arch/powerpc/kernel/setup_32.c
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@@ -127,6 +127,11 @@ void __init machine_init(unsigned long dt_ptr, unsigned long phys)
ppc_md.power_save = ppc6xx_idle;
#endif
#ifdef CONFIG_E500
if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
cpu_has_feature(CPU_FTR_CAN_NAP))
ppc_md.power_save = e500_idle;
#endif
if (ppc_md.progress)
ppc_md.progress("id mach(): done", 0x200);
}