ARM: OMAP4: PM: Initialise all the clockdomains to supported states

Initialise hardware supervised mode for all clockdomains if it's
supported. Initiate sleep transition for other clockdomains,
if they are not being used.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Tested-by: Vishwanath BS <vishwanath.bs@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c
index 35d392abcaa4..c34139dc8d8c 100644
--- a/arch/arm/mach-omap2/pm44xx.c
+++ b/arch/arm/mach-omap2/pm44xx.c
@@ -17,6 +17,7 @@
 #include <linux/slab.h>
 
 #include "common.h"
+#include "clockdomain.h"
 #include "powerdomain.h"
 
 struct power_state {
@@ -73,6 +74,22 @@ static const struct platform_suspend_ops omap_pm_ops = {
 };
 #endif /* CONFIG_SUSPEND */
 
+/*
+ * Enable hardware supervised mode for all clockdomains if it's
+ * supported. Initiate sleep transition for other clockdomains, if
+ * they are not used
+ */
+static int __init clkdms_setup(struct clockdomain *clkdm, void *unused)
+{
+        if (clkdm->flags & CLKDM_CAN_ENABLE_AUTO)
+                clkdm_allow_idle(clkdm);
+        else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP &&
+                        atomic_read(&clkdm->usecount) == 0)
+                clkdm_sleep(clkdm);
+        return 0;
+}
+
+
 static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
 {
         struct power_state *pwrst;
@@ -146,6 +163,8 @@ static int __init omap4_pm_init(void)
                 goto err2;
         }
 
+        (void) clkdm_for_each(clkdms_setup, NULL);
+
 #ifdef CONFIG_SUSPEND
         suspend_set_ops(&omap_pm_ops);
 #endif /* CONFIG_SUSPEND */