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Diffstat (limited to 'arch/arm/mach-omap2/cpuidle44xx.c')
-rw-r--r--arch/arm/mach-omap2/cpuidle44xx.c126
1 files changed, 52 insertions, 74 deletions
diff --git a/arch/arm/mach-omap2/cpuidle44xx.c b/arch/arm/mach-omap2/cpuidle44xx.c
index f386cbe..be1617c 100644
--- a/arch/arm/mach-omap2/cpuidle44xx.c
+++ b/arch/arm/mach-omap2/cpuidle44xx.c
@@ -24,26 +24,31 @@
#ifdef CONFIG_CPU_IDLE
-/* Machine specific information to be recorded in the C-state driver_data */
+/* Machine specific information */
struct omap4_idle_statedata {
u32 cpu_state;
u32 mpu_logic_state;
u32 mpu_state;
- u8 valid;
};
-static struct cpuidle_params cpuidle_params_table[] = {
- /* C1 - CPU0 ON + CPU1 ON + MPU ON */
- {.exit_latency = 2 + 2 , .target_residency = 5, .valid = 1},
- /* C2- CPU0 OFF + CPU1 OFF + MPU CSWR */
- {.exit_latency = 328 + 440 , .target_residency = 960, .valid = 1},
- /* C3 - CPU0 OFF + CPU1 OFF + MPU OSWR */
- {.exit_latency = 460 + 518 , .target_residency = 1100, .valid = 1},
+static struct omap4_idle_statedata omap4_idle_data[] = {
+ {
+ .cpu_state = PWRDM_POWER_ON,
+ .mpu_state = PWRDM_POWER_ON,
+ .mpu_logic_state = PWRDM_POWER_RET,
+ },
+ {
+ .cpu_state = PWRDM_POWER_OFF,
+ .mpu_state = PWRDM_POWER_RET,
+ .mpu_logic_state = PWRDM_POWER_RET,
+ },
+ {
+ .cpu_state = PWRDM_POWER_OFF,
+ .mpu_state = PWRDM_POWER_RET,
+ .mpu_logic_state = PWRDM_POWER_OFF,
+ },
};
-#define OMAP4_NUM_STATES ARRAY_SIZE(cpuidle_params_table)
-
-struct omap4_idle_statedata omap4_idle_data[OMAP4_NUM_STATES];
static struct powerdomain *mpu_pd, *cpu0_pd, *cpu1_pd;
/**
@@ -60,8 +65,7 @@ static int omap4_enter_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
- struct omap4_idle_statedata *cx =
- cpuidle_get_statedata(&dev->states_usage[index]);
+ struct omap4_idle_statedata *cx = &omap4_idle_data[index];
u32 cpu1_state;
int cpu_id = smp_processor_id();
@@ -78,7 +82,7 @@ static int omap4_enter_idle(struct cpuidle_device *dev,
cpu1_state = pwrdm_read_pwrst(cpu1_pd);
if (cpu1_state != PWRDM_POWER_OFF) {
index = drv->safe_state_index;
- cx = cpuidle_get_statedata(&dev->states_usage[index]);
+ cx = &omap4_idle_data[index];
}
if (index > 0)
@@ -133,36 +137,39 @@ struct cpuidle_driver omap4_idle_driver = {
.name = "omap4_idle",
.owner = THIS_MODULE,
.en_core_tk_irqen = 1,
+ .states = {
+ {
+ /* C1 - CPU0 ON + CPU1 ON + MPU ON */
+ .exit_latency = 2 + 2,
+ .target_residency = 5,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .enter = omap4_enter_idle,
+ .name = "C1",
+ .desc = "MPUSS ON"
+ },
+ {
+ /* C2 - CPU0 OFF + CPU1 OFF + MPU CSWR */
+ .exit_latency = 328 + 440,
+ .target_residency = 960,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .enter = omap4_enter_idle,
+ .name = "C2",
+ .desc = "MPUSS CSWR",
+ },
+ {
+ /* C3 - CPU0 OFF + CPU1 OFF + MPU OSWR */
+ .exit_latency = 460 + 518,
+ .target_residency = 1100,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .enter = omap4_enter_idle,
+ .name = "C3",
+ .desc = "MPUSS OSWR",
+ },
+ },
+ .state_count = ARRAY_SIZE(omap4_idle_data),
+ .safe_state_index = 0,
};
-static inline void _fill_cstate(struct cpuidle_driver *drv,
- int idx, const char *descr)
-{
- struct cpuidle_state *state = &drv->states[idx];
-
- state->exit_latency = cpuidle_params_table[idx].exit_latency;
- state->target_residency = cpuidle_params_table[idx].target_residency;
- state->flags = CPUIDLE_FLAG_TIME_VALID;
- state->enter = omap4_enter_idle;
- sprintf(state->name, "C%d", idx + 1);
- strncpy(state->desc, descr, CPUIDLE_DESC_LEN);
-}
-
-static inline struct omap4_idle_statedata *_fill_cstate_usage(
- struct cpuidle_device *dev,
- int idx)
-{
- struct omap4_idle_statedata *cx = &omap4_idle_data[idx];
- struct cpuidle_state_usage *state_usage = &dev->states_usage[idx];
-
- cx->valid = cpuidle_params_table[idx].valid;
- cpuidle_set_statedata(state_usage, cx);
-
- return cx;
-}
-
-
-
/**
* omap4_idle_init - Init routine for OMAP4 idle
*
@@ -171,9 +178,7 @@ static inline struct omap4_idle_statedata *_fill_cstate_usage(
*/
int __init omap4_idle_init(void)
{
- struct omap4_idle_statedata *cx;
struct cpuidle_device *dev;
- struct cpuidle_driver *drv = &omap4_idle_driver;
unsigned int cpu_id = 0;
mpu_pd = pwrdm_lookup("mpu_pwrdm");
@@ -182,42 +187,15 @@ int __init omap4_idle_init(void)
if ((!mpu_pd) || (!cpu0_pd) || (!cpu1_pd))
return -ENODEV;
-
- drv->safe_state_index = -1;
dev = &per_cpu(omap4_idle_dev, cpu_id);
dev->cpu = cpu_id;
- /* C1 - CPU0 ON + CPU1 ON + MPU ON */
- _fill_cstate(drv, 0, "MPUSS ON");
- drv->safe_state_index = 0;
- cx = _fill_cstate_usage(dev, 0);
- cx->valid = 1; /* C1 is always valid */
- cx->cpu_state = PWRDM_POWER_ON;
- cx->mpu_state = PWRDM_POWER_ON;
- cx->mpu_logic_state = PWRDM_POWER_RET;
-
- /* C2 - CPU0 OFF + CPU1 OFF + MPU CSWR */
- _fill_cstate(drv, 1, "MPUSS CSWR");
- cx = _fill_cstate_usage(dev, 1);
- cx->cpu_state = PWRDM_POWER_OFF;
- cx->mpu_state = PWRDM_POWER_RET;
- cx->mpu_logic_state = PWRDM_POWER_RET;
-
- /* C3 - CPU0 OFF + CPU1 OFF + MPU OSWR */
- _fill_cstate(drv, 2, "MPUSS OSWR");
- cx = _fill_cstate_usage(dev, 2);
- cx->cpu_state = PWRDM_POWER_OFF;
- cx->mpu_state = PWRDM_POWER_RET;
- cx->mpu_logic_state = PWRDM_POWER_OFF;
-
- drv->state_count = OMAP4_NUM_STATES;
cpuidle_register_driver(&omap4_idle_driver);
- dev->state_count = OMAP4_NUM_STATES;
if (cpuidle_register_device(dev)) {
pr_err("%s: CPUidle register device failed\n", __func__);
- return -EIO;
- }
+ return -EIO;
+ }
return 0;
}