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path: root/arch/sh/kernel/cpu/shmobile/cpuidle.c
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Diffstat (limited to 'arch/sh/kernel/cpu/shmobile/cpuidle.c')
-rw-r--r--arch/sh/kernel/cpu/shmobile/cpuidle.c113
1 files changed, 48 insertions, 65 deletions
diff --git a/arch/sh/kernel/cpu/shmobile/cpuidle.c b/arch/sh/kernel/cpu/shmobile/cpuidle.c
index c19e2a940e3..e3abfd4277e 100644
--- a/arch/sh/kernel/cpu/shmobile/cpuidle.c
+++ b/arch/sh/kernel/cpu/shmobile/cpuidle.c
@@ -14,9 +14,9 @@
#include <linux/io.h>
#include <linux/suspend.h>
#include <linux/cpuidle.h>
+#include <linux/export.h>
#include <asm/suspend.h>
#include <asm/uaccess.h>
-#include <asm/hwblk.h>
static unsigned long cpuidle_mode[] = {
SUSP_SH_SLEEP, /* regular sleep mode */
@@ -25,11 +25,11 @@ static unsigned long cpuidle_mode[] = {
};
static int cpuidle_sleep_enter(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ struct cpuidle_driver *drv,
+ int index)
{
- unsigned long allowed_mode = arch_hwblk_sleep_mode();
- ktime_t before, after;
- int requested_state = state - &dev->states[0];
+ unsigned long allowed_mode = SUSP_SH_SLEEP;
+ int requested_state = index;
int allowed_state;
int k;
@@ -46,73 +46,56 @@ static int cpuidle_sleep_enter(struct cpuidle_device *dev,
*/
k = min_t(int, allowed_state, requested_state);
- dev->last_state = &dev->states[k];
- before = ktime_get();
sh_mobile_call_standby(cpuidle_mode[k]);
- after = ktime_get();
- return ktime_to_ns(ktime_sub(after, before)) >> 10;
+
+ return k;
}
-static struct cpuidle_device cpuidle_dev;
static struct cpuidle_driver cpuidle_driver = {
- .name = "sh_idle",
- .owner = THIS_MODULE,
+ .name = "sh_idle",
+ .owner = THIS_MODULE,
+ .states = {
+ {
+ .exit_latency = 1,
+ .target_residency = 1 * 2,
+ .power_usage = 3,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .enter = cpuidle_sleep_enter,
+ .name = "C1",
+ .desc = "SuperH Sleep Mode",
+ },
+ {
+ .exit_latency = 100,
+ .target_residency = 1 * 2,
+ .power_usage = 1,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .enter = cpuidle_sleep_enter,
+ .name = "C2",
+ .desc = "SuperH Sleep Mode [SF]",
+ .disabled = true,
+ },
+ {
+ .exit_latency = 2300,
+ .target_residency = 1 * 2,
+ .power_usage = 1,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .enter = cpuidle_sleep_enter,
+ .name = "C3",
+ .desc = "SuperH Mobile Standby Mode [SF]",
+ .disabled = true,
+ },
+ },
+ .safe_state_index = 0,
+ .state_count = 3,
};
-void sh_mobile_setup_cpuidle(void)
+int __init sh_mobile_setup_cpuidle(void)
{
- struct cpuidle_device *dev = &cpuidle_dev;
- struct cpuidle_state *state;
- int i;
-
- cpuidle_register_driver(&cpuidle_driver);
-
- for (i = 0; i < CPUIDLE_STATE_MAX; i++) {
- dev->states[i].name[0] = '\0';
- dev->states[i].desc[0] = '\0';
- }
-
- i = CPUIDLE_DRIVER_STATE_START;
-
- state = &dev->states[i++];
- snprintf(state->name, CPUIDLE_NAME_LEN, "C0");
- strncpy(state->desc, "SuperH Sleep Mode", CPUIDLE_DESC_LEN);
- state->exit_latency = 1;
- state->target_residency = 1 * 2;
- state->power_usage = 3;
- state->flags = 0;
- state->flags |= CPUIDLE_FLAG_TIME_VALID;
- state->enter = cpuidle_sleep_enter;
-
- dev->safe_state = state;
-
- if (sh_mobile_sleep_supported & SUSP_SH_SF) {
- state = &dev->states[i++];
- snprintf(state->name, CPUIDLE_NAME_LEN, "C1");
- strncpy(state->desc, "SuperH Sleep Mode [SF]",
- CPUIDLE_DESC_LEN);
- state->exit_latency = 100;
- state->target_residency = 1 * 2;
- state->power_usage = 1;
- state->flags = 0;
- state->flags |= CPUIDLE_FLAG_TIME_VALID;
- state->enter = cpuidle_sleep_enter;
- }
-
- if (sh_mobile_sleep_supported & SUSP_SH_STANDBY) {
- state = &dev->states[i++];
- snprintf(state->name, CPUIDLE_NAME_LEN, "C2");
- strncpy(state->desc, "SuperH Mobile Standby Mode [SF]",
- CPUIDLE_DESC_LEN);
- state->exit_latency = 2300;
- state->target_residency = 1 * 2;
- state->power_usage = 1;
- state->flags = 0;
- state->flags |= CPUIDLE_FLAG_TIME_VALID;
- state->enter = cpuidle_sleep_enter;
- }
+ if (sh_mobile_sleep_supported & SUSP_SH_SF)
+ cpuidle_driver.states[1].disabled = false;
- dev->state_count = i;
+ if (sh_mobile_sleep_supported & SUSP_SH_STANDBY)
+ cpuidle_driver.states[2].disabled = false;
- cpuidle_register_device(dev);
+ return cpuidle_register(&cpuidle_driver, NULL);
}