ARM: OMAP2+: omap_hwmod: Introduce HWMOD_NEEDS_REIDLE

[rpmsg/hwspinlock.git] / arch / arm / mach-omap2 / omap_hwmod.h

diff --git a/arch/arm/mach-omap2/omap_hwmod.h b/arch/arm/mach-omap2/omap_hwmod.h
index b70cdc21f8a2b1ecfdffb7157c67c65a18d80db1..aea49d8e1e713377ee776ef63f78a8c57750a2cf 100644 (file)
--- a/arch/arm/mach-omap2/omap_hwmod.h
+++ b/arch/arm/mach-omap2/omap_hwmod.h
@@ -445,6 +445,10 @@ struct omap_hwmod_omap4_prcm {
  *     entering HW_AUTO while hwmod is active. This is needed to workaround
  *     some modules which don't function correctly with HW_AUTO. For example,
  *     DCAN on DRA7x SoC needs this to workaround errata i893.
+ * HWMOD_NEEDS_REIDLE: Some devices do not assert their MSTANDBY signal by
+ *     default after losing context if no driver is present and using the
+ *     hwmod. This will break subsequent suspend cycles but can be fixed by
+ *     enabling then idling the unused hwmod after each suspend cycle.
  */
 #define HWMOD_SWSUP_SIDLE                      (1 << 0)
 #define HWMOD_SWSUP_MSTANDBY                   (1 << 1)
@@ -463,6 +467,7 @@ struct omap_hwmod_omap4_prcm {
 #define HWMOD_OPT_CLKS_NEEDED                  (1 << 14)
 #define HWMOD_NO_IDLE                          (1 << 15)
 #define HWMOD_CLKDM_NOAUTO                     (1 << 16)
+#define HWMOD_NEEDS_REIDLE                     (1 << 17)
 
 /*
  * omap_hwmod._int_flags definitions
@@ -611,6 +616,14 @@ struct omap_hwmod {
 
 struct device_node;
 
+/*
+ * omap_hwmod_list - simple generic container for omap_hwmod lists
+ */
+struct omap_hwmod_list {
+       struct omap_hwmod *oh;
+       struct list_head oh_list;
+};
+
 struct omap_hwmod *omap_hwmod_lookup(const char *name);
 int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data),
                        void *data);
@@ -649,6 +662,10 @@ void __iomem *omap_hwmod_get_mpu_rt_va(struct omap_hwmod *oh);
 int omap_hwmod_enable_wakeup(struct omap_hwmod *oh);
 int omap_hwmod_disable_wakeup(struct omap_hwmod *oh);
 
+int omap_hwmod_setup_reidle(void);
+int omap_hwmod_enable_reidle(struct omap_hwmod *oh);
+int omap_hwmod_disable_reidle(struct omap_hwmod *oh);
+
 int omap_hwmod_for_each_by_class(const char *classname,
                                 int (*fn)(struct omap_hwmod *oh,
                                           void *user),