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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
/*
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* Static Memory Controller
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/syscore_ops.h>
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#include <mach/hardware.h>
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#include <mach/smemc.h>
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#ifdef CONFIG_PM
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static unsigned long msc[2];
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static unsigned long sxcnfg, memclkcfg;
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static unsigned long csadrcfg[4];
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static int pxa3xx_smemc_suspend(void)
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{
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msc[0] = __raw_readl(MSC0);
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msc[1] = __raw_readl(MSC1);
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sxcnfg = __raw_readl(SXCNFG);
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memclkcfg = __raw_readl(MEMCLKCFG);
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csadrcfg[0] = __raw_readl(CSADRCFG0);
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csadrcfg[1] = __raw_readl(CSADRCFG1);
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csadrcfg[2] = __raw_readl(CSADRCFG2);
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csadrcfg[3] = __raw_readl(CSADRCFG3);
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return 0;
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}
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static void pxa3xx_smemc_resume(void)
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{
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__raw_writel(msc[0], MSC0);
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__raw_writel(msc[1], MSC1);
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__raw_writel(sxcnfg, SXCNFG);
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__raw_writel(memclkcfg, MEMCLKCFG);
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__raw_writel(csadrcfg[0], CSADRCFG0);
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__raw_writel(csadrcfg[1], CSADRCFG1);
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__raw_writel(csadrcfg[2], CSADRCFG2);
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__raw_writel(csadrcfg[3], CSADRCFG3);
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}
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static struct syscore_ops smemc_syscore_ops = {
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.suspend = pxa3xx_smemc_suspend,
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.resume = pxa3xx_smemc_resume,
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};
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static int __init smemc_init(void)
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{
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if (cpu_is_pxa3xx())
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register_syscore_ops(&smemc_syscore_ops);
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return 0;
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}
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subsys_initcall(smemc_init);
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#endif
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