[1/5] OMAP4: PM: Use the lowpwrstatechange feature on OMAP4

Commit Message

Benoit Cousson Dec. 13, 2010, 9:49 p.m. UTC

None

Patch

diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index cf1c4c9..dc68044 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -114,6 +114,14 @@  int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
 		return ret;
 
 	if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) {
+		if ((pwrdm_read_pwrst(pwrdm) > state) &&
+			(pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) {
+				ret = pwrdm_set_next_pwrst(pwrdm, state);
+				pwrdm_set_lowpwrstchange(pwrdm);
+				pwrdm_wait_transition(pwrdm);
+				pwrdm_state_switch(pwrdm);
+				return ret;
+		}
 		omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
 		sleep_switch = 1;
 		pwrdm_wait_transition(pwrdm);