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Diffstat (limited to 'arch/arm/mach-shmobile/cpuidle.c')
-rw-r--r--arch/arm/mach-shmobile/cpuidle.c52
1 files changed, 23 insertions, 29 deletions
diff --git a/arch/arm/mach-shmobile/cpuidle.c b/arch/arm/mach-shmobile/cpuidle.c
index 2e44f11f592e..1b2334277e85 100644
--- a/arch/arm/mach-shmobile/cpuidle.c
+++ b/arch/arm/mach-shmobile/cpuidle.c
@@ -26,65 +26,59 @@ void (*shmobile_cpuidle_modes[CPUIDLE_STATE_MAX])(void) = {
26}; 26};
27 27
28static int shmobile_cpuidle_enter(struct cpuidle_device *dev, 28static int shmobile_cpuidle_enter(struct cpuidle_device *dev,
29 struct cpuidle_state *state) 29 struct cpuidle_driver *drv,
30 int index)
30{ 31{
31 ktime_t before, after; 32 ktime_t before, after;
32 int requested_state = state - &dev->states[0];
33 33
34 dev->last_state = &dev->states[requested_state];
35 before = ktime_get(); 34 before = ktime_get();
36 35
37 local_irq_disable(); 36 local_irq_disable();
38 local_fiq_disable(); 37 local_fiq_disable();
39 38
40 shmobile_cpuidle_modes[requested_state](); 39 shmobile_cpuidle_modes[index]();
41 40
42 local_irq_enable(); 41 local_irq_enable();
43 local_fiq_enable(); 42 local_fiq_enable();
44 43
45 after = ktime_get(); 44 after = ktime_get();
46 return ktime_to_ns(ktime_sub(after, before)) >> 10; 45 dev->last_residency = ktime_to_ns(ktime_sub(after, before)) >> 10;
46
47 return index;
47} 48}
48 49
49static struct cpuidle_device shmobile_cpuidle_dev; 50static struct cpuidle_device shmobile_cpuidle_dev;
50static struct cpuidle_driver shmobile_cpuidle_driver = { 51static struct cpuidle_driver shmobile_cpuidle_driver = {
51 .name = "shmobile_cpuidle", 52 .name = "shmobile_cpuidle",
52 .owner = THIS_MODULE, 53 .owner = THIS_MODULE,
54 .states[0] = {
55 .name = "C1",
56 .desc = "WFI",
57 .exit_latency = 1,
58 .target_residency = 1 * 2,
59 .flags = CPUIDLE_FLAG_TIME_VALID,
60 },
61 .safe_state_index = 0, /* C1 */
62 .state_count = 1,
53}; 63};
54 64
55void (*shmobile_cpuidle_setup)(struct cpuidle_device *dev); 65void (*shmobile_cpuidle_setup)(struct cpuidle_driver *drv);
56 66
57static int shmobile_cpuidle_init(void) 67static int shmobile_cpuidle_init(void)
58{ 68{
59 struct cpuidle_device *dev = &shmobile_cpuidle_dev; 69 struct cpuidle_device *dev = &shmobile_cpuidle_dev;
60 struct cpuidle_state *state; 70 struct cpuidle_driver *drv = &shmobile_cpuidle_driver;
61 int i; 71 int i;
62 72
63 cpuidle_register_driver(&shmobile_cpuidle_driver); 73 for (i = 0; i < CPUIDLE_STATE_MAX; i++)
64 74 drv->states[i].enter = shmobile_cpuidle_enter;
65 for (i = 0; i < CPUIDLE_STATE_MAX; i++) {
66 dev->states[i].name[0] = '\0';
67 dev->states[i].desc[0] = '\0';
68 dev->states[i].enter = shmobile_cpuidle_enter;
69 }
70
71 i = CPUIDLE_DRIVER_STATE_START;
72
73 state = &dev->states[i++];
74 snprintf(state->name, CPUIDLE_NAME_LEN, "C1");
75 strncpy(state->desc, "WFI", CPUIDLE_DESC_LEN);
76 state->exit_latency = 1;
77 state->target_residency = 1 * 2;
78 state->power_usage = 3;
79 state->flags = 0;
80 state->flags |= CPUIDLE_FLAG_TIME_VALID;
81
82 dev->safe_state = state;
83 dev->state_count = i;
84 75
85 if (shmobile_cpuidle_setup) 76 if (shmobile_cpuidle_setup)
86 shmobile_cpuidle_setup(dev); 77 shmobile_cpuidle_setup(drv);
78
79 cpuidle_register_driver(drv);
87 80
81 dev->state_count = drv->state_count;
88 cpuidle_register_device(dev); 82 cpuidle_register_device(dev);
89 83
90 return 0; 84 return 0;