linux/arch/arm/mach-pxa/clock-pxa2xx.c
Rafael J. Wysocki 2eaa03b5be ARM / PXA: Use struct syscore_ops for "core" power management
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>
2011-04-24 19:16:09 +02:00

54 lines
1 KiB
C

/*
* linux/arch/arm/mach-pxa/clock-pxa2xx.c
*
* 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.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/syscore_ops.h>
#include <mach/pxa2xx-regs.h>
#include "clock.h"
void clk_pxa2xx_cken_enable(struct clk *clk)
{
CKEN |= 1 << clk->cken;
}
void clk_pxa2xx_cken_disable(struct clk *clk)
{
CKEN &= ~(1 << clk->cken);
}
const struct clkops clk_pxa2xx_cken_ops = {
.enable = clk_pxa2xx_cken_enable,
.disable = clk_pxa2xx_cken_disable,
};
#ifdef CONFIG_PM
static uint32_t saved_cken;
static int pxa2xx_clock_suspend(void)
{
saved_cken = CKEN;
return 0;
}
static void pxa2xx_clock_resume(void)
{
CKEN = saved_cken;
}
#else
#define pxa2xx_clock_suspend NULL
#define pxa2xx_clock_resume NULL
#endif
struct syscore_ops pxa2xx_clock_syscore_ops = {
.suspend = pxa2xx_clock_suspend,
.resume = pxa2xx_clock_resume,
};