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fpga: bridge: support getting bridge from device

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Add two functions for getting the FPGA bridge from the device
rather than device tree node.  This is to enable writing code
that will support using FPGA bridges without device tree.
Rename one old function to make it clear that it is device
tree-ish.  This leaves us with 3 functions for getting a bridge:

* fpga_bridge_get
  Get the bridge given the device.

* fpga_bridges_get_to_list
  Given the device, get the bridge and add it to a list.

* of_fpga_bridges_get_to_list
  Renamed from priviously existing fpga_bridges_get_to_list.
  Given the device node, get the bridge and add it to a list.

Signed-off-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Tull
2017-11-15 14:20:11 -06:00
committed by Greg Kroah-Hartman
parent 4fbd8d194f
commit 9c1c4b2753
3 changed files with 103 additions and 30 deletions
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12
include/linux/fpga/fpga-bridge.h
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@@ -1,10 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/device.h>
#include <linux/fpga/fpga-mgr.h>
#ifndef _LINUX_FPGA_BRIDGE_H
#define _LINUX_FPGA_BRIDGE_H
#include <linux/device.h>
#include <linux/fpga/fpga-mgr.h>
struct fpga_bridge;
/**
@@ -43,6 +44,8 @@ struct fpga_bridge {
struct fpga_bridge *of_fpga_bridge_get(struct device_node *node,
struct fpga_image_info *info);
struct fpga_bridge *fpga_bridge_get(struct device *dev,
struct fpga_image_info *info);
void fpga_bridge_put(struct fpga_bridge *bridge);
int fpga_bridge_enable(struct fpga_bridge *bridge);
int fpga_bridge_disable(struct fpga_bridge *bridge);
@@ -50,9 +53,12 @@ int fpga_bridge_disable(struct fpga_bridge *bridge);
int fpga_bridges_enable(struct list_head *bridge_list);
int fpga_bridges_disable(struct list_head *bridge_list);
void fpga_bridges_put(struct list_head *bridge_list);
int fpga_bridge_get_to_list(struct device_node *np,
int fpga_bridge_get_to_list(struct device *dev,
struct fpga_image_info *info,
struct list_head *bridge_list);
int of_fpga_bridge_get_to_list(struct device_node *np,
struct fpga_image_info *info,
struct list_head *bridge_list);
int fpga_bridge_register(struct device *dev, const char *name,
const struct fpga_bridge_ops *br_ops, void *priv);