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| author | Kevin Hilman <khilman@deeprootsystems.com> | 2008-10-28 17:32:11 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2009-11-11 14:42:49 -0800 |
| commit | 0f724ed92b0ad152a03b7a194815787eeeec17a4 (patch) | |
| tree | c0dcd5f3f90c9738c46ab112c6a6b0c971c0f9f8 /arch/arm | |
| parent | c98e223006ffd4c5e4cd0f75c5a10bd2b45508d5 (diff) | |
| download | blackbird-op-linux-0f724ed92b0ad152a03b7a194815787eeeec17a4.tar.gz blackbird-op-linux-0f724ed92b0ad152a03b7a194815787eeeec17a4.zip | |
OMAP3: PM: CPUidle: check activity for C2, C3, correct accounting
Use the activity check for states C2 and C3 as well. This is
primarily to prevent deeper states during UART activity.
Also, if a different state is chosen than the target state, update the
'last_state' accordingly so that CPUidle state accounting is coorect.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap2/cpuidle34xx.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c index 1120494064d5..b0bee34c5107 100644 --- a/arch/arm/mach-omap2/cpuidle34xx.c +++ b/arch/arm/mach-omap2/cpuidle34xx.c @@ -28,6 +28,7 @@ #include <plat/powerdomain.h> #include <plat/irqs.h> #include <plat/control.h> +#include <plat/serial.h> #include "pm.h" @@ -124,11 +125,15 @@ return_sleep_time: static int omap3_enter_idle_bm(struct cpuidle_device *dev, struct cpuidle_state *state) { + struct cpuidle_state *new_state = state; + if ((state->flags & CPUIDLE_FLAG_CHECK_BM) && omap3_idle_bm_check()) { - if (dev->safe_state) - return dev->safe_state->enter(dev, dev->safe_state); + BUG_ON(!dev->safe_state); + new_state = dev->safe_state; } - return omap3_enter_idle(dev, state); + + dev->last_state = new_state; + return omap3_enter_idle(dev, new_state); } DEFINE_PER_CPU(struct cpuidle_device, omap3_idle_dev); @@ -163,7 +168,8 @@ void omap_init_power_states(void) omap3_power_states[OMAP3_STATE_C2].threshold = 300; omap3_power_states[OMAP3_STATE_C2].mpu_state = PWRDM_POWER_RET; omap3_power_states[OMAP3_STATE_C2].core_state = PWRDM_POWER_ON; - omap3_power_states[OMAP3_STATE_C2].flags = CPUIDLE_FLAG_TIME_VALID; + omap3_power_states[OMAP3_STATE_C2].flags = CPUIDLE_FLAG_TIME_VALID | + CPUIDLE_FLAG_CHECK_BM; /* C3 . MPU OFF + Core active */ omap3_power_states[OMAP3_STATE_C3].valid = 1; @@ -173,7 +179,8 @@ void omap_init_power_states(void) omap3_power_states[OMAP3_STATE_C3].threshold = 4000; omap3_power_states[OMAP3_STATE_C3].mpu_state = PWRDM_POWER_OFF; omap3_power_states[OMAP3_STATE_C3].core_state = PWRDM_POWER_ON; - omap3_power_states[OMAP3_STATE_C3].flags = CPUIDLE_FLAG_TIME_VALID; + omap3_power_states[OMAP3_STATE_C3].flags = CPUIDLE_FLAG_TIME_VALID | + CPUIDLE_FLAG_CHECK_BM; /* C4 . MPU CSWR + Core CSWR*/ omap3_power_states[OMAP3_STATE_C4].valid = 1; @@ -198,7 +205,7 @@ void omap_init_power_states(void) CPUIDLE_FLAG_CHECK_BM; /* C6 . MPU OFF + Core OFF */ - omap3_power_states[OMAP3_STATE_C6].valid = 0; + omap3_power_states[OMAP3_STATE_C6].valid = 1; omap3_power_states[OMAP3_STATE_C6].type = OMAP3_STATE_C6; omap3_power_states[OMAP3_STATE_C6].sleep_latency = 10000; omap3_power_states[OMAP3_STATE_C6].wakeup_latency = 30000; |
