| eric miao | b1d907f | 2008-01-28 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> |
| 9 | #include <linux/sysdev.h> |
| 10 | |
| Russell King | 05678a9 | 2008-11-28 16:04:54 +0000 | [diff] [blame] | 11 | #include <mach/hardware.h> |
| Marek Vasut | ad68bb9 | 2010-11-03 16:29:35 +0100 | [diff] [blame] | 12 | #include <mach/smemc.h> |
| eric miao | b1d907f | 2008-01-28 23:00:02 +0000 | [diff] [blame] | 13 | |
| 14 | #ifdef CONFIG_PM |
| eric miao | b1d907f | 2008-01-28 23:00:02 +0000 | [diff] [blame] | 15 | static unsigned long msc[2]; |
| 16 | static unsigned long sxcnfg, memclkcfg; |
| 17 | static unsigned long csadrcfg[4]; |
| 18 | |
| 19 | static int pxa3xx_smemc_suspend(struct sys_device *dev, pm_message_t state) |
| 20 | { |
| Marek Vasut | ad68bb9 | 2010-11-03 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 miao | b1d907f | 2008-01-28 23:00:02 +0000 | [diff] [blame] | 29 | |
| 30 | return 0; |
| 31 | } |
| 32 | |
| 33 | static int pxa3xx_smemc_resume(struct sys_device *dev) |
| 34 | { |
| Marek Vasut | ad68bb9 | 2010-11-03 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 miao | b1d907f | 2008-01-28 23:00:02 +0000 | [diff] [blame] | 43 | |
| 44 | return 0; |
| 45 | } |
| 46 | |
| 47 | static struct sysdev_class smemc_sysclass = { |
| 48 | .name = "smemc", |
| 49 | .suspend = pxa3xx_smemc_suspend, |
| 50 | .resume = pxa3xx_smemc_resume, |
| 51 | }; |
| 52 | |
| 53 | static struct sys_device smemc_sysdev = { |
| 54 | .id = 0, |
| 55 | .cls = &smemc_sysclass, |
| 56 | }; |
| 57 | |
| 58 | static int __init smemc_init(void) |
| 59 | { |
| 60 | int ret = 0; |
| 61 | |
| 62 | if (cpu_is_pxa3xx()) { |
| eric miao | b1d907f | 2008-01-28 23:00:02 +0000 | [diff] [blame] | 63 | ret = sysdev_class_register(&smemc_sysclass); |
| 64 | if (ret) |
| 65 | return ret; |
| 66 | |
| 67 | ret = sysdev_register(&smemc_sysdev); |
| 68 | } |
| 69 | |
| 70 | return ret; |
| 71 | } |
| 72 | subsys_initcall(smemc_init); |
| 73 | #endif |