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