LXR linux/include/linux/fpga/fpga-bridge.h

   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
   7struct 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 */
  15struct 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 */
  31struct 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
  43struct fpga_bridge *of_fpga_bridge_get(struct device_node *node,
  44                                       struct fpga_image_info *info);
  45void fpga_bridge_put(struct fpga_bridge *bridge);
  46int fpga_bridge_enable(struct fpga_bridge *bridge);
  47int fpga_bridge_disable(struct fpga_bridge *bridge);
  48
  49int fpga_bridges_enable(struct list_head *bridge_list);
  50int fpga_bridges_disable(struct list_head *bridge_list);
  51void fpga_bridges_put(struct list_head *bridge_list);
  52int fpga_bridge_get_to_list(struct device_node *np,
  53                            struct fpga_image_info *info,
  54                            struct list_head *bridge_list);
  55
  56int fpga_bridge_register(struct device *dev, const char *name,
  57                         const struct fpga_bridge_ops *br_ops, void *priv);
  58void fpga_bridge_unregister(struct device *dev);
  59
  60#endif /* _LINUX_FPGA_BRIDGE_H */
  61