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PM / AVR32: Use struct syscore_ops instead of sysdevs for PM

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Convert some AVR32 architecture's code to using struct syscore_ops
objects for power management instead of sysdev classes and sysdevs.

This simplifies the code and reduces the kernel's memory footprint.
It also is necessary for removing sysdevs from the kernel entirely in
the future.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
This commit is contained in:
Rafael J. Wysocki 2011-04-26 19:14:35 +02:00
parent 67f9cbf9af
commit f25f4f522a
1 changed files with 12 additions and 26 deletions
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38
arch/avr32/mach-at32ap/intc.c
View file

@ -12,7 +12,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/sysdev.h>
#include <linux/syscore_ops.h>
#include <asm/io.h>
@ -21,7 +21,6 @@
struct intc {
void __iomem *regs;
struct irq_chip chip;
struct sys_device sysdev;
#ifdef CONFIG_PM
unsigned long suspend_ipr;
unsigned long saved_ipr[64];
@ -146,9 +145,8 @@ void intc_set_suspend_handler(unsigned long offset)
intc0.suspend_ipr = offset;
}
static int intc_suspend(struct sys_device *sdev, pm_message_t state)
static int intc_suspend(void)
{
struct intc *intc = container_of(sdev, struct intc, sysdev);
int i;
if (unlikely(!irqs_disabled())) {
@ -156,28 +154,25 @@ static int intc_suspend(struct sys_device *sdev, pm_message_t state)
return -EINVAL;
}
if (unlikely(!intc->suspend_ipr)) {
if (unlikely(!intc0.suspend_ipr)) {
pr_err("intc_suspend: suspend_ipr not initialized\n");
return -EINVAL;
}
for (i = 0; i < 64; i++) {
intc->saved_ipr[i] = intc_readl(intc, INTPR0 + 4 * i);
intc_writel(intc, INTPR0 + 4 * i, intc->suspend_ipr);
intc0.saved_ipr[i] = intc_readl(&intc0, INTPR0 + 4 * i);
intc_writel(&intc0, INTPR0 + 4 * i, intc0.suspend_ipr);
}
return 0;
}
static int intc_resume(struct sys_device *sdev)
static int intc_resume(void)
{
struct intc *intc = container_of(sdev, struct intc, sysdev);
int i;
WARN_ON(!irqs_disabled());
for (i = 0; i < 64; i++)
intc_writel(intc, INTPR0 + 4 * i, intc->saved_ipr[i]);
intc_writel(&intc0, INTPR0 + 4 * i, intc0.saved_ipr[i]);
return 0;
}
@ -186,27 +181,18 @@ static int intc_resume(struct sys_device *sdev)
#define intc_resume NULL
#endif
static struct sysdev_class intc_class = {
.name = "intc",
static struct syscore_ops intc_syscore_ops = {
.suspend = intc_suspend,
.resume = intc_resume,
};
static int __init intc_init_sysdev(void)
static int __init intc_init_syscore(void)
{
int ret;
register_syscore_ops(&intc_syscore_ops);
ret = sysdev_class_register(&intc_class);
if (ret)
return ret;
intc0.sysdev.id = 0;
intc0.sysdev.cls = &intc_class;
ret = sysdev_register(&intc0.sysdev);
return ret;
return 0;
}
device_initcall(intc_init_sysdev);
device_initcall(intc_init_syscore);
unsigned long intc_get_pending(unsigned int group)
{