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/* SPDX-License-Identifier: GPL-2.0-only */
#include <common.h>
#ifndef _LINUX_FPGA_BRIDGE_H
#define _LINUX_FPGA_BRIDGE_H
struct fpga_bridge;
/**
* struct fpga_bridge_ops - ops for low level FPGA bridge drivers
* @enable_show: returns the FPGA bridge's status
* @enable_set: set a FPGA bridge as enabled or disabled
* @fpga_bridge_remove: set FPGA into a specific state during driver remove
*/
struct fpga_bridge_ops {
int (*enable_show)(struct fpga_bridge *bridge);
int (*enable_set)(struct fpga_bridge *bridge, bool enable);
void (*fpga_bridge_remove)(struct fpga_bridge *bridge);
};
/**
* struct fpga_bridge - FPGA bridge structure
* @name: name of low level FPGA bridge
* @dev: FPGA bridge device
* @mutex: enforces exclusive reference to bridge
* @br_ops: pointer to struct of FPGA bridge ops
* @info: fpga image specific information
* @node: FPGA bridge list node
* @priv: low level driver private date
*/
struct fpga_bridge {
struct device dev;
const struct fpga_bridge_ops *br_ops;
struct list_head node;
unsigned int enable;
void *priv;
};
#define to_fpga_bridge(d) container_of(d, struct fpga_bridge, dev)
struct fpga_bridge *of_fpga_bridge_get(struct device_node *node);
void fpga_bridge_put(struct fpga_bridge *bridge);
int fpga_bridge_enable(struct fpga_bridge *bridge);
int fpga_bridge_disable(struct fpga_bridge *bridge);
#ifdef CONFIG_FPGA_BRIDGE
int fpga_bridges_enable(struct list_head *bridge_list);
int fpga_bridges_disable(struct list_head *bridge_list);
int fpga_bridge_get_to_list(struct device_node *np,
struct list_head *bridge_list);
void fpga_bridges_put(struct list_head *bridge_list);
#else
static inline int fpga_bridges_enable(struct list_head *bridge_list)
{
return -ENOSYS;
};
static inline int fpga_bridges_disable(struct list_head *bridge_list)
{
return -ENOSYS;
};
static inline int fpga_bridge_get_to_list(struct device_node *np,
struct list_head *bridge_list)
{
return -ENOSYS;
};
static inline void fpga_bridges_put(struct list_head *bridge_list)
{
return;
};
#endif
int fpga_bridge_register(struct device *dev, const char *name,
const struct fpga_bridge_ops *br_ops, void *priv);
#endif /* _LINUX_FPGA_BRIDGE_H */
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