ad68bb9f7a
This is important because on PXA3xx, the physical mapping of SMEMC registers differs from the one on PXA2xx. In order to get PCMCIA working on both PXA2xx and PXA320, the PCMCIA driver was adjusted accordingly as well. Also, various places in the kernel had to be patched to use __raw_read/__raw_write. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
73 lines
1.5 KiB
C
73 lines
1.5 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/sysdev.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(struct sys_device *dev, pm_message_t state)
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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 int pxa3xx_smemc_resume(struct sys_device *dev)
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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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return 0;
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}
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static struct sysdev_class smemc_sysclass = {
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.name = "smemc",
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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 struct sys_device smemc_sysdev = {
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.id = 0,
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.cls = &smemc_sysclass,
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};
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static int __init smemc_init(void)
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{
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int ret = 0;
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if (cpu_is_pxa3xx()) {
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ret = sysdev_class_register(&smemc_sysclass);
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if (ret)
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return ret;
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ret = sysdev_register(&smemc_sysdev);
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}
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return ret;
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}
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subsys_initcall(smemc_init);
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#endif
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