1 files changed, 28 insertions, 10 deletions

diff --git a/drivers/hwspinlock/hwspinlock_internal.h b/drivers/hwspinlock/hwspinlock_internal.h
index fb25830c2ee7..d26f78b8f214 100644
--- a/drivers/hwspinlock/hwspinlock_internal.h
+++ b/drivers/hwspinlock/hwspinlock_internal.h
@@ -21,6 +21,8 @@
 #include <linux/spinlock.h>
 #include <linux/device.h>
 
+struct hwspinlock_device;
+
 /**
  * struct hwspinlock_ops - platform-specific hwspinlock handlers
  *
@@ -39,21 +41,37 @@ struct hwspinlock_ops {
 
 /**
  * struct hwspinlock - this struct represents a single hwspinlock instance
- *
- * @dev: underlying device, will be used to invoke runtime PM api
- * @ops: platform-specific hwspinlock handlers
- * @id: a global, unique, system-wide, index of the lock.
+ * @bank: the hwspinlock_device structure which owns this lock
  * @lock: initialized and used by hwspinlock core
- *
- * Note: currently simplicity was opted for, but later we can squeeze some
- * memory bytes by grouping dev, ops in a single
- * per-platform struct, and have all hwspinlocks point at it.
+ * @priv: private data, owned by the underlying platform-specific hwspinlock drv
  */
 struct hwspinlock {
+        struct hwspinlock_device *bank;
+        spinlock_t lock;
+        void *priv;
+};
+
+/**
+ * struct hwspinlock_device - a device which usually spans numerous hwspinlocks
+ * @dev: underlying device, will be used to invoke runtime PM api
+ * @ops: platform-specific hwspinlock handlers
+ * @base_id: id index of the first lock in this device
+ * @num_locks: number of locks in this device
+ * @lock: dynamically allocated array of 'struct hwspinlock'
+ */
+struct hwspinlock_device {
         struct device *dev;
         const struct hwspinlock_ops *ops;
-        int id;
-        spinlock_t lock;
+        int base_id;
+        int num_locks;
+        struct hwspinlock lock[0];
 };
 
+static inline int hwlock_to_id(struct hwspinlock *hwlock)
+{
+        int local_id = hwlock - &hwlock->bank->lock[0];
+
+        return hwlock->bank->base_id + local_id;
+}
+
 #endif /* __HWSPINLOCK_HWSPINLOCK_H */