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ARM / PXA: Use struct syscore_ops for "core" power management

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Replace sysdev classes and struct sys_device objects used for "core"
power management by the PXA platform code with struct syscore_ops
objects that are simpler.

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

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Rafael J. Wysocki
2011-04-22 22:03:11 +02:00
parent 905339807b
commit 2eaa03b5be
31 changed files with 110 additions and 307 deletions
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25
arch/arm/mach-pxa/pxa3xx.c
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@@ -20,7 +20,7 @@
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/sysdev.h>
#include <linux/syscore_ops.h>
#include <linux/i2c/pxa-i2c.h>
#include <asm/mach/map.h>
@@ -427,21 +427,9 @@ static struct platform_device *devices[] __initdata = {
&pxa27x_device_pwm1,
};
static struct sys_device pxa3xx_sysdev[] = {
{
.cls = &pxa_irq_sysclass,
}, {
.cls = &pxa3xx_mfp_sysclass,
}, {
.cls = &pxa_gpio_sysclass,
}, {
.cls = &pxa3xx_clock_sysclass,
}
};
static int __init pxa3xx_init(void)
{
int i, ret = 0;
int ret = 0;
if (cpu_is_pxa3xx()) {
@@ -462,11 +450,10 @@ static int __init pxa3xx_init(void)
pxa3xx_init_pm();
for (i = 0; i < ARRAY_SIZE(pxa3xx_sysdev); i++) {
ret = sysdev_register(&pxa3xx_sysdev[i]);
if (ret)
pr_err("failed to register sysdev[%d]\n", i);
}
register_syscore_ops(&pxa_irq_syscore_ops);
register_syscore_ops(&pxa3xx_mfp_syscore_ops);
register_syscore_ops(&pxa_gpio_syscore_ops);
register_syscore_ops(&pxa3xx_clock_syscore_ops);
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
}