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review.evervolv.com / android_kernel_htc_msm8960 / dc9c44432623f9524aa80c80764d82db6b8b74e7 / . / arch / arm / mach-pxa / smemc.c
blob: 79923058d10f1352d8fd420180fc86ceca06957c [file] [log] [blame]
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]1/*
2 * Static Memory Controller
3 */
4
5#include <linux/module.h>
6#include <linux/kernel.h>
7#include <linux/init.h>
8#include <linux/io.h>
Rafael J. Wysocki2eaa03b2011-04-22 22:03:11 +0200[diff] [blame]9#include <linux/syscore_ops.h>
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]10
Russell King05678a92008-11-28 16:04:54 +0000[diff] [blame]11#include <mach/hardware.h>
Marek Vasutad68bb92010-11-03 16:29:35 +0100[diff] [blame]12#include <mach/smemc.h>
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]13
14#ifdef CONFIG_PM
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]15static unsigned long msc[2];
16static unsigned long sxcnfg, memclkcfg;
17static unsigned long csadrcfg[4];
18
Rafael J. Wysocki2eaa03b2011-04-22 22:03:11 +0200[diff] [blame]19static int pxa3xx_smemc_suspend(void)
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]20{
Marek Vasutad68bb92010-11-03 16:29:35 +0100[diff] [blame]21 msc[0] = __raw_readl(MSC0);
22 msc[1] = __raw_readl(MSC1);
23 sxcnfg = __raw_readl(SXCNFG);
24 memclkcfg = __raw_readl(MEMCLKCFG);
25 csadrcfg[0] = __raw_readl(CSADRCFG0);
26 csadrcfg[1] = __raw_readl(CSADRCFG1);
27 csadrcfg[2] = __raw_readl(CSADRCFG2);
28 csadrcfg[3] = __raw_readl(CSADRCFG3);
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]29
30 return 0;
31}
32
Rafael J. Wysocki2eaa03b2011-04-22 22:03:11 +0200[diff] [blame]33static void pxa3xx_smemc_resume(void)
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]34{
Marek Vasutad68bb92010-11-03 16:29:35 +0100[diff] [blame]35 __raw_writel(msc[0], MSC0);
36 __raw_writel(msc[1], MSC1);
37 __raw_writel(sxcnfg, SXCNFG);
38 __raw_writel(memclkcfg, MEMCLKCFG);
39 __raw_writel(csadrcfg[0], CSADRCFG0);
40 __raw_writel(csadrcfg[1], CSADRCFG1);
41 __raw_writel(csadrcfg[2], CSADRCFG2);
42 __raw_writel(csadrcfg[3], CSADRCFG3);
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]43}
44
Rafael J. Wysocki2eaa03b2011-04-22 22:03:11 +0200[diff] [blame]45static struct syscore_ops smemc_syscore_ops = {
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]46 .suspend = pxa3xx_smemc_suspend,
47 .resume = pxa3xx_smemc_resume,
48};
49
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]50static int __init smemc_init(void)
51{
Rafael J. Wysocki2eaa03b2011-04-22 22:03:11 +0200[diff] [blame]52 if (cpu_is_pxa3xx())
53 register_syscore_ops(&smemc_syscore_ops);
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]54
Rafael J. Wysocki2eaa03b2011-04-22 22:03:11 +0200[diff] [blame]55 return 0;
eric miaob1d907f2008-01-28 23:00:02 +0000[diff] [blame]56}
57subsys_initcall(smemc_init);
58#endif