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
   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 */