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Commit c3dada18 authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt
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ARM: mach-shmobile: Suspend-to-RAM support 



This patch adds a simple Suspend-to-RAM implementation
for SH-Mobile ARM. The struct shmobile_suspend_ops are
kept global to allow cpu-specific code to override
the callbacks if needed.

Signed-off-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent cac6f98d

arch/arm/mach-shmobile/Makefile

+3 −0
Original line number Original line Diff line number Diff line
@@ -30,6 +30,9 @@ obj-$(CONFIG_ARCH_SH7377) += entry-intc.o 
obj-$(CONFIG_ARCH_SH7372)	+= entry-intc.o

obj-$(CONFIG_ARCH_SH7372)	+= entry-intc.o

obj-$(CONFIG_ARCH_SH73A0)	+= entry-gic.o

obj-$(CONFIG_ARCH_SH73A0)	+= entry-gic.o





# PM objects

obj-$(CONFIG_SUSPEND)		+= suspend.o



# Board objects

# Board objects

obj-$(CONFIG_MACH_G3EVM)	+= board-g3evm.o

obj-$(CONFIG_MACH_G3EVM)	+= board-g3evm.o

obj-$(CONFIG_MACH_G4EVM)	+= board-g4evm.o

obj-$(CONFIG_MACH_G4EVM)	+= board-g4evm.o

arch/arm/mach-shmobile/include/mach/common.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -8,6 +8,7 @@ struct clk; 
extern int clk_init(void);

extern int clk_init(void);

extern void shmobile_handle_irq_intc(struct pt_regs *);

extern void shmobile_handle_irq_intc(struct pt_regs *);

extern void shmobile_handle_irq_gic(struct pt_regs *);

extern void shmobile_handle_irq_gic(struct pt_regs *);

extern struct platform_suspend_ops shmobile_suspend_ops;





extern void sh7367_init_irq(void);

extern void sh7367_init_irq(void);

extern void sh7367_add_early_devices(void);

extern void sh7367_add_early_devices(void);

arch/arm/mach-shmobile/suspend.c

0 → 100644
+47 −0
Original line number Original line Diff line number Diff line 
/*

 * Suspend-to-RAM support code for SH-Mobile ARM

 *

 *  Copyright (C) 2011 Magnus Damm

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 */



#include <linux/pm.h>

#include <linux/suspend.h>

#include <linux/module.h>

#include <linux/err.h>

#include <asm/system.h>

#include <asm/io.h>



static int shmobile_suspend_default_enter(suspend_state_t suspend_state)

{

	cpu_do_idle();

	return 0;

}



static int shmobile_suspend_begin(suspend_state_t state)

{

	disable_hlt();

	return 0;

}



static void shmobile_suspend_end(void)

{

	enable_hlt();

}



struct platform_suspend_ops shmobile_suspend_ops = {

	.begin		= shmobile_suspend_begin,

	.end		= shmobile_suspend_end,

	.enter		= shmobile_suspend_default_enter,

	.valid		= suspend_valid_only_mem,

};



static int __init shmobile_suspend_init(void)

{

	suspend_set_ops(&shmobile_suspend_ops);

	return 0;

}

late_initcall(shmobile_suspend_init);