redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

[ARM] pxa: fix resume failure by saving/restoring IPRx registers 

Since interrupt handler is changed to use interrupt priority, we also need
to save and restore these interrupt controller registers in suspend/resume
routine.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Tested-by: Daniel Mack <daniel@caiaq.de>
Tested-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
hifive-unleashed-5.1
Haojian Zhuang 2009-11-02 14:02:21 -05:00 committed by Eric Miao
parent 902805dbda
commit c482ae4dcf
1 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/arm/mach-pxa/irq.c
View File

@ -25,6 +25,8 @@
#include "generic.h"
#define MAX_INTERNAL_IRQS 128
#define IRQ_BIT(n) (((n) - PXA_IRQ(0)) & 0x1f)
#define _ICMR(n) (*((((n) - PXA_IRQ(0)) & ~0x1f) ? &ICMR2 : &ICMR))
#define _ICLR(n) (*((((n) - PXA_IRQ(0)) & ~0x1f) ? &ICLR2 : &ICLR))
@ -122,6 +124,8 @@ void __init pxa_init_irq(int irq_nr, set_wake_t fn)
{
int irq, i;
BUG_ON(irq_nr > MAX_INTERNAL_IRQS);
pxa_internal_irq_nr = irq_nr;
for (irq = PXA_IRQ(0); irq < PXA_IRQ(irq_nr); irq += 32) {
@ -149,7 +153,8 @@ void __init pxa_init_irq(int irq_nr, set_wake_t fn)
}
#ifdef CONFIG_PM
static unsigned long saved_icmr[2];
static unsigned long saved_icmr[MAX_INTERNAL_IRQS/32];
static unsigned long saved_ipr[MAX_INTERNAL_IRQS];
static int pxa_irq_suspend(struct sys_device *dev, pm_message_t state)
{
@ -159,6 +164,8 @@ static int pxa_irq_suspend(struct sys_device *dev, pm_message_t state)
saved_icmr[i] = _ICMR(irq);
_ICMR(irq) = 0;
}
for (i = 0; i < pxa_internal_irq_nr; i++)
saved_ipr[i] = IPR(i);
return 0;
}
@ -171,6 +178,8 @@ static int pxa_irq_resume(struct sys_device *dev)
_ICMR(irq) = saved_icmr[i];
_ICLR(irq) = 0;
}
for (i = 0; i < pxa_internal_irq_nr; i++)
IPR(i) = saved_ipr[i];
ICCR = 1;
return 0;