mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 00:40:55 +07:00
2eaa03b5be
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>
59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
/*
|
|
* Static Memory Controller
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
#include <linux/syscore_ops.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <mach/smemc.h>
|
|
|
|
#ifdef CONFIG_PM
|
|
static unsigned long msc[2];
|
|
static unsigned long sxcnfg, memclkcfg;
|
|
static unsigned long csadrcfg[4];
|
|
|
|
static int pxa3xx_smemc_suspend(void)
|
|
{
|
|
msc[0] = __raw_readl(MSC0);
|
|
msc[1] = __raw_readl(MSC1);
|
|
sxcnfg = __raw_readl(SXCNFG);
|
|
memclkcfg = __raw_readl(MEMCLKCFG);
|
|
csadrcfg[0] = __raw_readl(CSADRCFG0);
|
|
csadrcfg[1] = __raw_readl(CSADRCFG1);
|
|
csadrcfg[2] = __raw_readl(CSADRCFG2);
|
|
csadrcfg[3] = __raw_readl(CSADRCFG3);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void pxa3xx_smemc_resume(void)
|
|
{
|
|
__raw_writel(msc[0], MSC0);
|
|
__raw_writel(msc[1], MSC1);
|
|
__raw_writel(sxcnfg, SXCNFG);
|
|
__raw_writel(memclkcfg, MEMCLKCFG);
|
|
__raw_writel(csadrcfg[0], CSADRCFG0);
|
|
__raw_writel(csadrcfg[1], CSADRCFG1);
|
|
__raw_writel(csadrcfg[2], CSADRCFG2);
|
|
__raw_writel(csadrcfg[3], CSADRCFG3);
|
|
}
|
|
|
|
static struct syscore_ops smemc_syscore_ops = {
|
|
.suspend = pxa3xx_smemc_suspend,
|
|
.resume = pxa3xx_smemc_resume,
|
|
};
|
|
|
|
static int __init smemc_init(void)
|
|
{
|
|
if (cpu_is_pxa3xx())
|
|
register_syscore_ops(&smemc_syscore_ops);
|
|
|
|
return 0;
|
|
}
|
|
subsys_initcall(smemc_init);
|
|
#endif
|