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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
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+3 −0
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@@ -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
+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);
+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);