1 /* SPDX-License-Identifier: GPL-2.0 */
3 #ifndef _LINUX_FPGA_BRIDGE_H
4 #define _LINUX_FPGA_BRIDGE_H
6 #include <linux/device.h>
7 #include <linux/fpga/fpga-mgr.h>
12 * struct fpga_bridge_ops - ops for low level FPGA bridge drivers
13 * @enable_show: returns the FPGA bridge's status
14 * @enable_set: set a FPGA bridge as enabled or disabled
15 * @fpga_bridge_remove: set FPGA into a specific state during driver remove
17 struct fpga_bridge_ops {
18 int (*enable_show)(struct fpga_bridge *bridge);
19 int (*enable_set)(struct fpga_bridge *bridge, bool enable);
20 void (*fpga_bridge_remove)(struct fpga_bridge *bridge);
24 * struct fpga_bridge - FPGA bridge structure
25 * @name: name of low level FPGA bridge
26 * @dev: FPGA bridge device
27 * @mutex: enforces exclusive reference to bridge
28 * @br_ops: pointer to struct of FPGA bridge ops
29 * @info: fpga image specific information
30 * @node: FPGA bridge list node
31 * @priv: low level driver private date
36 struct mutex mutex; /* for exclusive reference to bridge */
37 const struct fpga_bridge_ops *br_ops;
38 struct fpga_image_info *info;
39 struct list_head node;
43 #define to_fpga_bridge(d) container_of(d, struct fpga_bridge, dev)
45 struct fpga_bridge *of_fpga_bridge_get(struct device_node *node,
46 struct fpga_image_info *info);
47 struct fpga_bridge *fpga_bridge_get(struct device *dev,
48 struct fpga_image_info *info);
49 void fpga_bridge_put(struct fpga_bridge *bridge);
50 int fpga_bridge_enable(struct fpga_bridge *bridge);
51 int fpga_bridge_disable(struct fpga_bridge *bridge);
53 int fpga_bridges_enable(struct list_head *bridge_list);
54 int fpga_bridges_disable(struct list_head *bridge_list);
55 void fpga_bridges_put(struct list_head *bridge_list);
56 int fpga_bridge_get_to_list(struct device *dev,
57 struct fpga_image_info *info,
58 struct list_head *bridge_list);
59 int of_fpga_bridge_get_to_list(struct device_node *np,
60 struct fpga_image_info *info,
61 struct list_head *bridge_list);
63 int fpga_bridge_register(struct device *dev, const char *name,
64 const struct fpga_bridge_ops *br_ops, void *priv);
65 void fpga_bridge_unregister(struct device *dev);
67 #endif /* _LINUX_FPGA_BRIDGE_H */