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[ARM] 3113/1: PXA: Allow machines to override (and also reuse) pxa pm functions

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Patch from Richard Purdie

Update the PXA pm.c file to allow machines (such as the Sharp
Zaurus) to override the standard pm functions but reuse/wrap them
where needed.

The init call is made slightly earlier to give machine code an init
level to override them in removing any race.

Signed-off-by: Richard Purdie
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Richard Purdie 2005-11-06 15:03:23 +00:00 committed by Russell King
parent b7ec479553
commit 756c7b7489
2 changed files with 24 additions and 4 deletions
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16
arch/arm/mach-pxa/pm.c
View File

@ -12,6 +12,7 @@
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/time.h>
@ -19,6 +20,7 @@
#include <asm/hardware.h>
#include <asm/memory.h>
#include <asm/system.h>
#include <asm/arch/pm.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/lubbock.h>
#include <asm/mach/time.h>
@ -72,7 +74,7 @@ enum { SLEEP_SAVE_START = 0,
};
static int pxa_pm_enter(suspend_state_t state)
int pxa_pm_enter(suspend_state_t state)
{
unsigned long sleep_save[SLEEP_SAVE_SIZE];
unsigned long checksum = 0;
@ -191,6 +193,8 @@ static int pxa_pm_enter(suspend_state_t state)
return 0;
}
EXPORT_SYMBOL_GPL(pxa_pm_enter);
unsigned long sleep_phys_sp(void *sp)
{
return virt_to_phys(sp);
@ -199,21 +203,25 @@ unsigned long sleep_phys_sp(void *sp)
/*
* Called after processes are frozen, but before we shut down devices.
*/
static int pxa_pm_prepare(suspend_state_t state)
int pxa_pm_prepare(suspend_state_t state)
{
extern int pxa_cpu_pm_prepare(suspend_state_t state);
return pxa_cpu_pm_prepare(state);
}
EXPORT_SYMBOL_GPL(pxa_pm_prepare);
/*
* Called after devices are re-setup, but before processes are thawed.
*/
static int pxa_pm_finish(suspend_state_t state)
int pxa_pm_finish(suspend_state_t state)
{
return 0;
}
EXPORT_SYMBOL_GPL(pxa_pm_finish);
/*
* Set to PM_DISK_FIRMWARE so we can quickly veto suspend-to-disk.
*/
@ -230,4 +238,4 @@ static int __init pxa_pm_init(void)
return 0;
}
late_initcall(pxa_pm_init);
device_initcall(pxa_pm_init);

12
include/asm-arm/arch-pxa/pm.h Normal file
View File

@ -0,0 +1,12 @@
/*
* Copyright (c) 2005 Richard Purdie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
extern int pxa_pm_prepare(suspend_state_t state);
extern int pxa_pm_enter(suspend_state_t state);
extern int pxa_pm_finish(suspend_state_t state);