1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/drivers/misc/xillybus_of.c
4 *
5 * Copyright 2011 Xillybus Ltd, http://xillybus.com
6 *
7 * Driver for the Xillybus FPGA/host framework using Open Firmware.
8 */
9
10#include <linux/module.h>
11#include <linux/device.h>
12#include <linux/slab.h>
13#include <linux/platform_device.h>
14#include <linux/of.h>
15#include <linux/err.h>
16#include "xillybus.h"
17
18MODULE_DESCRIPTION("Xillybus driver for Open Firmware");
19MODULE_AUTHOR("Eli Billauer, Xillybus Ltd.");
20MODULE_ALIAS("xillybus_of");
21MODULE_LICENSE("GPL v2");
22
23static const char xillyname[] = "xillybus_of";
24
25/* Match table for of_platform binding */
26static const struct of_device_id xillybus_of_match[] = {
27	{ .compatible = "xillybus,xillybus-1.00.a", },
28	{ .compatible = "xlnx,xillybus-1.00.a", }, /* Deprecated */
29	{}
30};
31
32MODULE_DEVICE_TABLE(of, xillybus_of_match);
33
34static int xilly_drv_probe(struct platform_device *op)
35{
36	struct device *dev = &op->dev;
37	struct xilly_endpoint *endpoint;
38	int rc;
39	int irq;
40
41	endpoint = xillybus_init_endpoint(dev);
42
43	if (!endpoint)
44		return -ENOMEM;
45
46	dev_set_drvdata(dev, endpoint);
47
48	endpoint->owner = THIS_MODULE;
49
50	endpoint->registers = devm_platform_ioremap_resource(op, 0);
51	if (IS_ERR(endpoint->registers))
52		return PTR_ERR(endpoint->registers);
53
54	irq = platform_get_irq(op, 0);
55
56	rc = devm_request_irq(dev, irq, xillybus_isr, 0, xillyname, endpoint);
57
58	if (rc) {
59		dev_err(endpoint->dev,
60			"Failed to register IRQ handler. Aborting.\n");
61		return -ENODEV;
62	}
63
64	return xillybus_endpoint_discovery(endpoint);
65}
66
67static void xilly_drv_remove(struct platform_device *op)
68{
69	struct device *dev = &op->dev;
70	struct xilly_endpoint *endpoint = dev_get_drvdata(dev);
71
72	xillybus_endpoint_remove(endpoint);
73}
74
75static struct platform_driver xillybus_platform_driver = {
76	.probe = xilly_drv_probe,
77	.remove_new = xilly_drv_remove,
78	.driver = {
79		.name = xillyname,
80		.of_match_table = xillybus_of_match,
81	},
82};
83
84module_platform_driver(xillybus_platform_driver);
85