1 files changed, 74 insertions, 0 deletions
diff --git a/include/fpga-bridge.h b/include/fpga-bridge.h
new file mode 100644
index 0000000000..fef2a9ccbb
--- /dev/null
+++ b/include/fpga-bridge.h
@@ -0,0 +1,74 @@
+#include <common.h>
+
+#ifndef _LINUX_FPGA_BRIDGE_H
+#define _LINUX_FPGA_BRIDGE_H
+
+struct fpga_bridge;
+
+/**
+ * struct fpga_bridge_ops - ops for low level FPGA bridge drivers
+ * @enable_show: returns the FPGA bridge's status
+ * @enable_set: set a FPGA bridge as enabled or disabled
+ * @fpga_bridge_remove: set FPGA into a specific state during driver remove
+ */
+struct fpga_bridge_ops {
+	int (*enable_show)(struct fpga_bridge *bridge);
+	int (*enable_set)(struct fpga_bridge *bridge, bool enable);
+	void (*fpga_bridge_remove)(struct fpga_bridge *bridge);
+};
+
+/**
+ * struct fpga_bridge - FPGA bridge structure
+ * @name: name of low level FPGA bridge
+ * @dev: FPGA bridge device
+ * @mutex: enforces exclusive reference to bridge
+ * @br_ops: pointer to struct of FPGA bridge ops
+ * @info: fpga image specific information
+ * @node: FPGA bridge list node
+ * @priv: low level driver private date
+ */
+struct fpga_bridge {
+	struct device_d dev;
+	const struct fpga_bridge_ops *br_ops;
+	struct list_head node;
+	unsigned int enable;
+	void *priv;
+};
+
+#define to_fpga_bridge(d) container_of(d, struct fpga_bridge, dev)
+
+struct fpga_bridge *of_fpga_bridge_get(struct device_node *node);
+void fpga_bridge_put(struct fpga_bridge *bridge);
+int fpga_bridge_enable(struct fpga_bridge *bridge);
+int fpga_bridge_disable(struct fpga_bridge *bridge);
+
+#ifdef CONFIG_FPGA_BRIDGE
+int fpga_bridges_enable(struct list_head *bridge_list);
+int fpga_bridges_disable(struct list_head *bridge_list);
+int fpga_bridge_get_to_list(struct device_node *np,
+			    struct list_head *bridge_list);
+void fpga_bridges_put(struct list_head *bridge_list);
+#else
+static inline int fpga_bridges_enable(struct list_head *bridge_list)
+{
+	return -ENOSYS;
+};
+static inline int fpga_bridges_disable(struct list_head *bridge_list)
+{
+	return -ENOSYS;
+};
+static inline int fpga_bridge_get_to_list(struct device_node *np,
+			    struct list_head *bridge_list)
+{
+	return -ENOSYS;
+};
+static inline void fpga_bridges_put(struct list_head *bridge_list)
+{
+	return;
+};
+#endif
+
+int fpga_bridge_register(struct device_d *dev, const char *name,
+			 const struct fpga_bridge_ops *br_ops, void *priv);
+
+#endif /* _LINUX_FPGA_BRIDGE_H */