OMAP: hwmod: Enable module wakeup if in smartidle

If a module's OCP slave port is programmed to be in smartidle,
its also necessary that they have module level wakeup enabled.
Update _sysc_enable in hwmod framework to do this.

The thread "[PATCH 7/8] : Hwmod api changes" archived here:

http://www.mail-archive.com/linux-omap@vger.kernel.org/msg34212.html

has additional technical information on the rationale of this patch.

Sergei Shtylyov <sshtylyov@mvista.com> identified an indentation
problem with this patch - thanks, Sergei.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Partha Basak <p-basak2@ti.com>
Signed-off-by: Benoît Cousson <b-cousson@ti.com>
[paul@pwsan.com: revised patch description]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index f320cfb911d5..d694067e6e9a 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -691,8 +691,6 @@ static void _sysc_enable(struct omap_hwmod *oh)
                 _set_module_autoidle(oh, idlemode, &v);
         }
 
-        /* XXX OCP ENAWAKEUP bit? */
-
         /*
          * XXX The clock framework should handle this, by
          * calling into this code.  But this must wait until the
@@ -703,6 +701,10 @@ static void _sysc_enable(struct omap_hwmod *oh)
                 _set_clockactivity(oh, oh->class->sysc->clockact, &v);
 
         _write_sysconfig(v, oh);
+
+        /* If slave is in SMARTIDLE, also enable wakeup */
+        if ((sf & SYSC_HAS_SIDLEMODE) && !(oh->flags & HWMOD_SWSUP_SIDLE))
+                _enable_wakeup(oh);
 }
 
 /**