From 78e9016fa466833e0a7a40f7642cd374994b2841 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Tue, 24 Apr 2012 16:05:23 +0200 Subject: [PATCH] ARM: OMAP4: cpuidle - Declare the states with the driver declaration The cpuidle API allows to declare statically the states in the driver structure. Let's use it. We do no longer need the fill_cstate function called at runtime and by the way adding more instructions at boot time. Signed-off-by: Daniel Lezcano Reviewed-by: Jean Pihet Reviewed-by: Santosh Shilimkar Tested-by: Santosh Shilimkar Tested-by: Kevin Hilman Signed-off-by: Kevin Hilman --- arch/arm/mach-omap2/cpuidle44xx.c | 60 +++++++++++++++++-------------- 1 file changed, 33 insertions(+), 27 deletions(-) diff --git a/arch/arm/mach-omap2/cpuidle44xx.c b/arch/arm/mach-omap2/cpuidle44xx.c index ee0bc508bcd2..7072c9e63a8f 100644 --- a/arch/arm/mach-omap2/cpuidle44xx.c +++ b/arch/arm/mach-omap2/cpuidle44xx.c @@ -132,21 +132,39 @@ 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 = OMAP4_NUM_STATES, + .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) @@ -171,7 +189,6 @@ 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"); @@ -180,41 +197,30 @@ 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->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; }