From 33de32b3ebcb4f7f77f10a1b42493352f00c6a30 Mon Sep 17 00:00:00 2001
From: Rajendra Nayak <rnayak@ti.com>
Date: Tue, 21 Dec 2010 22:37:28 -0700
Subject: OMAP4: PM: Do not assume clkdm supports hw transitions

omap_set_pwrdm_state today assumes a clkdm supports hw_auto
transitions and hence leaves some which do not support this
in sw wkup state preventing low power transitions.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/pm.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'arch/arm')

diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index a2b826cdfbf6..9b1db592759f 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -95,8 +95,7 @@ static void omap2_init_processor_devices(void)
 
 /*
  * This sets pwrdm state (other than mpu & core. Currently only ON &
- * RET are supported. Function is assuming that clkdm doesn't have
- * hw_sup mode enabled.
+ * RET are supported.
  */
 int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
 {
@@ -137,7 +136,10 @@ int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
 
 	switch (sleep_switch) {
 	case FORCEWAKEUP_SWITCH:
-		omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
+		if (pwrdm->pwrdm_clkdms[0]->flags & CLKDM_CAN_ENABLE_AUTO)
+			omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
+		else
+			omap2_clkdm_sleep(pwrdm->pwrdm_clkdms[0]);
 		break;
 	case LOWPOWERSTATE_SWITCH:
 		pwrdm_set_lowpwrstchange(pwrdm);
-- 
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