OMAP: PM noop: implement context loss count for non-omap_devices

For devices which have not (yet) been converted to use omap_device,
implement the context loss counter using the "brutal method" as
originally proposed by Paul Walmsley[1].

The dummy context loss counter is incremented every time it is
checked, but only when off-mode is enabled.  When off-mode is
disabled, the dummy counter stops incrementing.

Tested on 36xx/Zoom3 using MMC driver, which is currently the
only in-tree user of this API.

This patch should be reverted after all devices are converted to using
omap_device.

[1] http://marc.info/?l=linux-omap&m=129176260000626&w=2

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
[paul@pwsan.com: fixed compile warning; fixed to compile on OMAP1]
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
index e535082b0c2e..125f56591fb5 100644
--- a/arch/arm/mach-omap2/pm-debug.c
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -32,6 +32,7 @@
 #include "powerdomain.h"
 #include "clockdomain.h"
 #include <plat/dmtimer.h>
+#include <plat/omap-pm.h>
 
 #include "cm2xxx_3xxx.h"
 #include "prm2xxx_3xxx.h"
@@ -581,6 +582,10 @@ static int option_set(void *data, u64 val)
         *option = val;
 
         if (option == &enable_off_mode) {
+                if (val)
+                        omap_pm_enable_off_mode();
+                else
+                        omap_pm_disable_off_mode();
                 if (cpu_is_omap34xx())
                         omap3_pm_off_mode_enable(val);
         }