ARM: OMAP2+: hwmod code/clockdomain data: fix 32K sync timer

[pandora-kernel.git] / arch / arm / mach-omap2 / omap_hwmod.c

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 17ccdfa..088c536 100644 (file)
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -910,15 +910,18 @@ static void __iomem * __init _find_mpu_rt_base(struct omap_hwmod *oh, u8 index)
  * _enable_sysc - try to bring a module out of idle via OCP_SYSCONFIG
  * @oh: struct omap_hwmod *
  *
- * If module is marked as SWSUP_SIDLE, force the module out of slave
- * idle; otherwise, configure it for smart-idle.  If module is marked
- * as SWSUP_MSUSPEND, force the module out of master standby;
- * otherwise, configure it for smart-standby.  No return value.
+ * Ensure that the OCP_SYSCONFIG register for the IP block represented
+ * by @oh is set to indicate to the PRCM that the IP block is active.
+ * Usually this means placing the module into smart-idle mode and
+ * smart-standby, but if there is a bug in the automatic idle handling
+ * for the IP block, it may need to be placed into the force-idle or
+ * no-idle variants of these modes.  No return value.
  */
 static void _enable_sysc(struct omap_hwmod *oh)
 {
        u8 idlemode, sf;
        u32 v;
+       bool clkdm_act;
 
        if (!oh->class->sysc)
                return;
@@ -927,8 +930,16 @@ static void _enable_sysc(struct omap_hwmod *oh)
        sf = oh->class->sysc->sysc_flags;
 
        if (sf & SYSC_HAS_SIDLEMODE) {
-               idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ?
-                       HWMOD_IDLEMODE_NO : HWMOD_IDLEMODE_SMART;
+               clkdm_act = ((oh->clkdm &&
+                             oh->clkdm->flags & CLKDM_ACTIVE_WITH_MPU) ||
+                            (oh->_clk && oh->_clk->clkdm &&
+                             oh->_clk->clkdm->flags & CLKDM_ACTIVE_WITH_MPU));
+               if (clkdm_act && !(oh->class->sysc->idlemodes &
+                                  (SIDLE_SMART | SIDLE_SMART_WKUP)))
+                       idlemode = HWMOD_IDLEMODE_FORCE;
+               else
+                       idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ?
+                               HWMOD_IDLEMODE_NO : HWMOD_IDLEMODE_SMART;
                _set_slave_idlemode(oh, idlemode, &v);
        }
 
@@ -996,8 +1007,13 @@ static void _idle_sysc(struct omap_hwmod *oh)
        sf = oh->class->sysc->sysc_flags;
 
        if (sf & SYSC_HAS_SIDLEMODE) {
-               idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ?
-                       HWMOD_IDLEMODE_FORCE : HWMOD_IDLEMODE_SMART;
+               /* XXX What about HWMOD_IDLEMODE_SMART_WKUP? */
+               if (oh->flags & HWMOD_SWSUP_SIDLE ||
+                   !(oh->class->sysc->idlemodes &
+                     (SIDLE_SMART | SIDLE_SMART_WKUP)))
+                       idlemode = HWMOD_IDLEMODE_FORCE;
+               else
+                       idlemode = HWMOD_IDLEMODE_SMART;
                _set_slave_idlemode(oh, idlemode, &v);
        }