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sh: cpuidle for SuperH Mobile using hwblk

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This patch adds cpuidle support for SuperH Mobile.

The sleep mode selected by cpuidle is compared with
the mode selected by the hwblk sleep code and the
best allowed mode is entered.

At this point "Sleep mode" and "Sleep mode + SF" are
supported. This code can easily be extended to support
"Software suspend mode", but the assembly code must
first be updated to avoid loosing interrupts.

Also, update the code to only copy the assembly snippet
into internal memory once at bootup.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm
2009-07-03 10:28:00 +00:00
committed by Paul Mundt
parent a61c1a6366
commit 7426394f20
4 changed files with 125 additions and 13 deletions
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9
arch/sh/include/asm/suspend.h
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@ -10,6 +10,15 @@ struct swsusp_arch_regs {
struct pt_regs user_regs;
unsigned long bank1_regs[8];
};
void sh_mobile_call_standby(unsigned long mode);
#ifdef CONFIG_CPU_IDLE
void sh_mobile_setup_cpuidle(void);
#else
static inline void sh_mobile_setup_cpuidle(void) {}
#endif
#endif
/* flags passed to assembly suspend code */