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Diffstat (limited to 'arch/arm/mach-omap2/cpuidle34xx.c')
-rw-r--r--arch/arm/mach-omap2/cpuidle34xx.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index 1fe35c24fba..464cffde58f 100644
--- a/arch/arm/mach-omap2/cpuidle34xx.c
+++ b/arch/arm/mach-omap2/cpuidle34xx.c
@@ -24,15 +24,17 @@
#include <linux/sched.h>
#include <linux/cpuidle.h>
+#include <linux/export.h>
+#include <linux/cpu_pm.h>
#include <plat/prcm.h>
#include <plat/irqs.h>
#include "powerdomain.h"
#include "clockdomain.h"
-#include <plat/serial.h>
#include "pm.h"
#include "control.h"
+#include "common.h"
#ifdef CONFIG_CPU_IDLE
@@ -122,9 +124,23 @@ static int omap3_enter_idle(struct cpuidle_device *dev,
pwrdm_for_each_clkdm(core_pd, _cpuidle_deny_idle);
}
+ /*
+ * Call idle CPU PM enter notifier chain so that
+ * VFP context is saved.
+ */
+ if (mpu_state == PWRDM_POWER_OFF)
+ cpu_pm_enter();
+
/* Execute ARM wfi */
omap_sram_idle();
+ /*
+ * Call idle CPU PM enter notifier chain to restore
+ * VFP context.
+ */
+ if (pwrdm_read_prev_pwrst(mpu_pd) == PWRDM_POWER_OFF)
+ cpu_pm_exit();
+
/* Re-allow idle for C1 */
if (index == 0) {
pwrdm_for_each_clkdm(mpu_pd, _cpuidle_allow_idle);
@@ -243,11 +259,6 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev,
struct omap3_idle_statedata *cx;
int ret;
- if (!omap3_can_sleep()) {
- new_state_idx = drv->safe_state_index;
- goto select_state;
- }
-
/*
* Prevent idle completely if CAM is active.
* CAM does not have wakeup capability in OMAP3.