1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  HID driver for some petalynx "special" devices
4  *
5  *  Copyright (c) 1999 Andreas Gal
6  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
7  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
8  *  Copyright (c) 2006-2007 Jiri Kosina
9  *  Copyright (c) 2008 Jiri Slaby
10  */
11 
12 /*
13  */
14 
15 #include <linux/device.h>
16 #include <linux/hid.h>
17 #include <linux/module.h>
18 
19 #include "hid-ids.h"
20 
21 /* Petalynx Maxter Remote has maximum for consumer page set too low */
pl_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * rsize)22 static __u8 *pl_report_fixup(struct hid_device *hdev, __u8 *rdesc,
23 		unsigned int *rsize)
24 {
25 	if (*rsize >= 62 && rdesc[39] == 0x2a && rdesc[40] == 0xf5 &&
26 			rdesc[41] == 0x00 && rdesc[59] == 0x26 &&
27 			rdesc[60] == 0xf9 && rdesc[61] == 0x00) {
28 		hid_info(hdev, "fixing up Petalynx Maxter Remote report descriptor\n");
29 		rdesc[60] = 0xfa;
30 		rdesc[40] = 0xfa;
31 	}
32 	return rdesc;
33 }
34 
35 #define pl_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \
36 					EV_KEY, (c))
pl_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)37 static int pl_input_mapping(struct hid_device *hdev, struct hid_input *hi,
38 		struct hid_field *field, struct hid_usage *usage,
39 		unsigned long **bit, int *max)
40 {
41 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_LOGIVENDOR) {
42 		switch (usage->hid & HID_USAGE) {
43 		case 0x05a: pl_map_key_clear(KEY_TEXT);		break;
44 		case 0x05b: pl_map_key_clear(KEY_RED);		break;
45 		case 0x05c: pl_map_key_clear(KEY_GREEN);	break;
46 		case 0x05d: pl_map_key_clear(KEY_YELLOW);	break;
47 		case 0x05e: pl_map_key_clear(KEY_BLUE);		break;
48 		default:
49 			return 0;
50 		}
51 		return 1;
52 	}
53 
54 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
55 		switch (usage->hid & HID_USAGE) {
56 		case 0x0f6: pl_map_key_clear(KEY_NEXT);		break;
57 		case 0x0fa: pl_map_key_clear(KEY_BACK);		break;
58 		default:
59 			return 0;
60 		}
61 		return 1;
62 	}
63 
64 	return 0;
65 }
66 
pl_probe(struct hid_device * hdev,const struct hid_device_id * id)67 static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id)
68 {
69 	int ret;
70 
71 	hdev->quirks |= HID_QUIRK_NOGET;
72 
73 	ret = hid_parse(hdev);
74 	if (ret) {
75 		hid_err(hdev, "parse failed\n");
76 		goto err_free;
77 	}
78 
79 	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
80 	if (ret) {
81 		hid_err(hdev, "hw start failed\n");
82 		goto err_free;
83 	}
84 
85 	return 0;
86 err_free:
87 	return ret;
88 }
89 
90 static const struct hid_device_id pl_devices[] = {
91 	{ HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
92 	{ }
93 };
94 MODULE_DEVICE_TABLE(hid, pl_devices);
95 
96 static struct hid_driver pl_driver = {
97 	.name = "petalynx",
98 	.id_table = pl_devices,
99 	.report_fixup = pl_report_fixup,
100 	.input_mapping = pl_input_mapping,
101 	.probe = pl_probe,
102 };
103 module_hid_driver(pl_driver);
104 
105 MODULE_LICENSE("GPL");
106