PM / OPP: Parse 'opp-supported-hw' binding

[firefly-linux-kernel-4.4.55.git] / drivers / base / power / opp / opp.h

diff --git a/drivers/base/power/opp/opp.h b/drivers/base/power/opp/opp.h
index 7366b2aa8997897f89890cf99a4990d83e61a5a6..70f4564a6ab9d5274fd7f95b18777fad58eab42b 100644 (file)
--- a/drivers/base/power/opp/opp.h
+++ b/drivers/base/power/opp/opp.h
@@ -17,6 +17,7 @@
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
+#include <linux/limits.h>
 #include <linux/pm_opp.h>
 #include <linux/rculist.h>
 #include <linux/rcupdate.h>
@@ -50,9 +51,10 @@ extern struct mutex dev_opp_list_lock;
  *             are protected by the dev_opp_list_lock for integrity.
  *             IMPORTANT: the opp nodes should be maintained in increasing
  *             order.
- * @dynamic:   not-created from static DT entries.
  * @available: true/false - marks if this OPP as available or not
+ * @dynamic:   not-created from static DT entries.
  * @turbo:     true if turbo (boost) OPP
+ * @suspend:   true if suspend OPP
  * @rate:      Frequency in hertz
  * @u_volt:    Target voltage in microvolts corresponding to this OPP
  * @u_volt_min:        Minimum voltage in microvolts corresponding to this OPP
@@ -63,6 +65,7 @@ extern struct mutex dev_opp_list_lock;
  * @dev_opp:   points back to the device_opp struct this opp belongs to
  * @rcu_head:  RCU callback head used for deferred freeing
  * @np:                OPP's device node.
+ * @dentry:    debugfs dentry pointer (per opp)
  *
  * This structure stores the OPP information for a given device.
  */
@@ -72,6 +75,7 @@ struct dev_pm_opp {
        bool available;
        bool dynamic;
        bool turbo;
+       bool suspend;
        unsigned long rate;
 
        unsigned long u_volt;
@@ -84,6 +88,10 @@ struct dev_pm_opp {
        struct rcu_head rcu_head;
 
        struct device_node *np;
+
+#ifdef CONFIG_DEBUG_FS
+       struct dentry *dentry;
+#endif
 };
 
 /**
@@ -91,6 +99,7 @@ struct dev_pm_opp {
  * @node:      list node
  * @dev:       device to which the struct object belongs
  * @rcu_head:  RCU callback head used for deferred freeing
+ * @dentry:    debugfs dentry pointer (per device)
  *
  * This is an internal data structure maintaining the list of devices that are
  * managed by 'struct device_opp'.
@@ -99,6 +108,10 @@ struct device_list_opp {
        struct list_head node;
        const struct device *dev;
        struct rcu_head rcu_head;
+
+#ifdef CONFIG_DEBUG_FS
+       struct dentry *dentry;
+#endif
 };
 
 /**
@@ -113,7 +126,13 @@ struct device_list_opp {
  * @dev_list:  list of devices that share these OPPs
  * @opp_list:  list of opps
  * @np:                struct device_node pointer for opp's DT node.
+ * @clock_latency_ns_max: Max clock latency in nanoseconds.
  * @shared_opp: OPP is shared between multiple devices.
+ * @suspend_opp: Pointer to OPP to be used during device suspend.
+ * @supported_hw: Array of version number to support.
+ * @supported_hw_count: Number of elements in supported_hw array.
+ * @dentry:    debugfs dentry pointer of the real device directory (not links).
+ * @dentry_name: Name of the real dentry.
  *
  * This is an internal data structure maintaining the link to opps attached to
  * a device. This structure is not meant to be shared to users as it is
@@ -135,6 +154,14 @@ struct device_opp {
        unsigned long clock_latency_ns_max;
        bool shared_opp;
        struct dev_pm_opp *suspend_opp;
+
+       unsigned int *supported_hw;
+       unsigned int supported_hw_count;
+
+#ifdef CONFIG_DEBUG_FS
+       struct dentry *dentry;
+       char dentry_name[NAME_MAX];
+#endif
 };
 
 /* Routines internal to opp core */
@@ -143,4 +170,26 @@ struct device_list_opp *_add_list_dev(const struct device *dev,
                                      struct device_opp *dev_opp);
 struct device_node *_of_get_opp_desc_node(struct device *dev);
 
+#ifdef CONFIG_DEBUG_FS
+void opp_debug_remove_one(struct dev_pm_opp *opp);
+int opp_debug_create_one(struct dev_pm_opp *opp, struct device_opp *dev_opp);
+int opp_debug_register(struct device_list_opp *list_dev,
+                      struct device_opp *dev_opp);
+void opp_debug_unregister(struct device_list_opp *list_dev,
+                         struct device_opp *dev_opp);
+#else
+static inline void opp_debug_remove_one(struct dev_pm_opp *opp) {}
+
+static inline int opp_debug_create_one(struct dev_pm_opp *opp,
+                                      struct device_opp *dev_opp)
+{ return 0; }
+static inline int opp_debug_register(struct device_list_opp *list_dev,
+                                    struct device_opp *dev_opp)
+{ return 0; }
+
+static inline void opp_debug_unregister(struct device_list_opp *list_dev,
+                                       struct device_opp *dev_opp)
+{ }
+#endif         /* DEBUG_FS */
+
 #endif         /* __DRIVER_OPP_H__ */