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ARM: shmobile: r8a7740: Add CPU sleep suspend

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Add the lighest possible sleep mode on Cortex-A9 cores: CPU sleep.
It is entered by a simple dsb and wfi instruction via cpu_do_idle(). As
just clocks are stopped there is no need to save or restore any state of
the system.

Signed-off-by: Bastian Hecht <hechtb+renesas@gmail.com>
Acked-by: Magnus Damm <damm@opensource.se>
[ horms@verge.net.au: Added missing includes ]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Bastian Hecht
2012-12-05 12:13:07 +00:00
committed by Simon Horman
parent 13baf88bd6
commit 895d3b53fd
3 changed files with 25 additions and 0 deletions
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arch/arm/mach-shmobile/include/mach/common.h
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@@ -52,6 +52,7 @@ extern void r8a7740_add_early_devices(void);
extern void r8a7740_add_standard_devices(void);
extern void r8a7740_clock_init(u8 md_ck);
extern void r8a7740_pinmux_init(void);
extern void r8a7740_pm_init(void);
extern void r8a7779_init_irq(void);
extern void r8a7779_map_io(void);