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authorSantosh Shilimkar <santosh.shilimkar@ti.com>2011-01-05 17:33:17 +0100
committerKevin Hilman <khilman@ti.com>2011-12-08 20:28:59 +0100
commit3c50729b3fa1cd8ca1f347e6caf1081204cf1a7c (patch)
treeda2dc3dbdd0b07e1f987dbe31c1e1ca68c2a413e /arch
parentARM: OMAP4: PM: Avoid omap4_pm_init() on OMAP4430 ES1.0 (diff)
downloadlinux-3c50729b3fa1cd8ca1f347e6caf1081204cf1a7c.tar.xz
linux-3c50729b3fa1cd8ca1f347e6caf1081204cf1a7c.zip
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-omap2/pm44xx.c19
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 */