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12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/cpuidle.h>
15#include <linux/io.h>
16#include <linux/export.h>
17#include <linux/time.h>
18
19#include <asm/cpuidle.h>
20
21#include <plat/cpu.h>
22#include <mach/map.h>
23
24#include "regs-sys.h"
25#include "regs-syscon-power.h"
26
27static int s3c64xx_enter_idle(struct cpuidle_device *dev,
28 struct cpuidle_driver *drv,
29 int index)
30{
31 unsigned long tmp;
32
33
34 tmp = __raw_readl(S3C64XX_PWR_CFG);
35 tmp &= ~S3C64XX_PWRCFG_CFG_WFI_MASK;
36 tmp |= S3C64XX_PWRCFG_CFG_WFI_IDLE;
37 __raw_writel(tmp, S3C64XX_PWR_CFG);
38
39 cpu_do_idle();
40
41 return index;
42}
43
44static struct cpuidle_driver s3c64xx_cpuidle_driver = {
45 .name = "s3c64xx_cpuidle",
46 .owner = THIS_MODULE,
47 .states = {
48 {
49 .enter = s3c64xx_enter_idle,
50 .exit_latency = 1,
51 .target_residency = 1,
52 .name = "IDLE",
53 .desc = "System active, ARM gated",
54 },
55 },
56 .state_count = 1,
57};
58
59static int __init s3c64xx_init_cpuidle(void)
60{
61 if (soc_is_s3c64xx())
62 return cpuidle_register(&s3c64xx_cpuidle_driver, NULL);
63 return 0;
64}
65device_initcall(s3c64xx_init_cpuidle);
66