1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #include <linux/device.h> 3 #include <linux/fpga/fpga-mgr.h> 4 5 #ifndef _LINUX_FPGA_BRIDGE_H 6 #define _LINUX_FPGA_BRIDGE_H 7 8 struct fpga_bridge; 9 10 /** 11 * struct fpga_bridge_ops - ops for low level FPGA bridge drivers 12 * @enable_show: returns the FPGA bridge's status 13 * @enable_set: set a FPGA bridge as enabled or disabled 14 * @fpga_bridge_remove: set FPGA into a specific state during driver remove 15 */ 16 struct fpga_bridge_ops { 17 int (*enable_show)(struct fpga_bridge *bridge); 18 int (*enable_set)(struct fpga_bridge *bridge, bool enable); 19 void (*fpga_bridge_remove)(struct fpga_bridge *bridge); 20 }; 21 22 /** 23 * struct fpga_bridge - FPGA bridge structure 24 * @name: name of low level FPGA bridge 25 * @dev: FPGA bridge device 26 * @mutex: enforces exclusive reference to bridge 27 * @br_ops: pointer to struct of FPGA bridge ops 28 * @info: fpga image specific information 29 * @node: FPGA bridge list node 30 * @priv: low level driver private date 31 */ 32 struct fpga_bridge { 33 const char *name; 34 struct device dev; 35 struct mutex mutex; /* for exclusive reference to bridge */ 36 const struct fpga_bridge_ops *br_ops; 37 struct fpga_image_info *info; 38 struct list_head node; 39 void *priv; 40 }; 41 42 #define to_fpga_bridge(d) container_of(d, struct fpga_bridge, dev) 43 44 struct fpga_bridge *of_fpga_bridge_get(struct device_node *node, 45 struct fpga_image_info *info); 46 void fpga_bridge_put(struct fpga_bridge *bridge); 47 int fpga_bridge_enable(struct fpga_bridge *bridge); 48 int fpga_bridge_disable(struct fpga_bridge *bridge); 49 50 int fpga_bridges_enable(struct list_head *bridge_list); 51 int fpga_bridges_disable(struct list_head *bridge_list); 52 void fpga_bridges_put(struct list_head *bridge_list); 53 int fpga_bridge_get_to_list(struct device_node *np, 54 struct fpga_image_info *info, 55 struct list_head *bridge_list); 56 57 int fpga_bridge_register(struct device *dev, const char *name, 58 const struct fpga_bridge_ops *br_ops, void *priv); 59 void fpga_bridge_unregister(struct device *dev); 60 61 #endif /* _LINUX_FPGA_BRIDGE_H */ 62