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
18 MODULE_DESCRIPTION("Xillybus driver for Open Firmware");
19 MODULE_AUTHOR("Eli Billauer, Xillybus Ltd.");
20 MODULE_ALIAS("xillybus_of");
21 MODULE_LICENSE("GPL v2");
22
23 static const char xillyname[] = "xillybus_of";
24
25 /* Match table for of_platform binding */
26 static 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
32 MODULE_DEVICE_TABLE(of, xillybus_of_match);
33
xilly_drv_probe(struct platform_device * op)34 static 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
xilly_drv_remove(struct platform_device * op)67 static int 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 return 0;
75 }
76
77 static struct platform_driver xillybus_platform_driver = {
78 .probe = xilly_drv_probe,
79 .remove = xilly_drv_remove,
80 .driver = {
81 .name = xillyname,
82 .of_match_table = xillybus_of_match,
83 },
84 };
85
86 module_platform_driver(xillybus_platform_driver);
87