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authorJiri Slaby <jirislaby@gmail.com>2008-06-25 16:31:48 -0400
committerJiri Kosina <jkosina@suse.cz>2008-10-14 17:50:54 -0400
commit980a3da6acdd577ee3ae192e868dc52fe4b7f2e5 (patch)
tree420ca3c79bdca00967afe3683ff8acf11196174c /drivers/hid/hid-samsung.c
parent949f8fef77186c7361d22e1ea6f42c76ceda42b0 (diff)
HID: move samsung quirks
Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-samsung.c')
-rw-r--r--drivers/hid/hid-samsung.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/hid/hid-samsung.c b/drivers/hid/hid-samsung.c
new file mode 100644
index 000000000000..8771bfae02f5
--- /dev/null
+++ b/drivers/hid/hid-samsung.c
@@ -0,0 +1,101 @@
1/*
2 * HID driver for some samsung "special" devices
3 *
4 * Copyright (c) 1999 Andreas Gal
5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7 * Copyright (c) 2006-2007 Jiri Kosina
8 * Copyright (c) 2007 Paul Walmsley
9 * Copyright (c) 2008 Jiri Slaby
10 */
11
12/*
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the Free
15 * Software Foundation; either version 2 of the License, or (at your option)
16 * any later version.
17 */
18
19#include <linux/device.h>
20#include <linux/hid.h>
21#include <linux/module.h>
22
23#include "hid-ids.h"
24
25/*
26 * Samsung IrDA remote controller (reports as Cypress USB Mouse).
27 *
28 * Vendor specific report #4 has a size of 48 bit,
29 * and therefore is not accepted when inspecting the descriptors.
30 * As a workaround we reinterpret the report as:
31 * Variable type, count 6, size 8 bit, log. maximum 255
32 * The burden to reconstruct the data is moved into user space.
33 */
34static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
35 unsigned int rsize)
36{
37 if (rsize >= 182 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
38 rdesc[177] == 0x75 && rdesc[178] == 0x30 &&
39 rdesc[179] == 0x95 && rdesc[180] == 0x01 &&
40 rdesc[182] == 0x40) {
41 dev_info(&hdev->dev, "fixing up Samsung IrDA report "
42 "descriptor\n");
43 rdesc[176] = 0xff;
44 rdesc[178] = 0x08;
45 rdesc[180] = 0x06;
46 rdesc[182] = 0x42;
47 }
48}
49
50static int samsung_probe(struct hid_device *hdev,
51 const struct hid_device_id *id)
52{
53 int ret;
54
55 hdev->quirks |= HID_QUIRK_HIDDEV | HID_QUIRK_IGNORE_HIDINPUT;
56
57 ret = hid_parse(hdev);
58 if (ret) {
59 dev_err(&hdev->dev, "parse failed\n");
60 goto err_free;
61 }
62
63 ret = hid_hw_start(hdev);
64 if (ret) {
65 dev_err(&hdev->dev, "hw start failed\n");
66 goto err_free;
67 }
68
69 return 0;
70err_free:
71 return ret;
72}
73
74static const struct hid_device_id samsung_devices[] = {
75 { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
76 { }
77};
78MODULE_DEVICE_TABLE(hid, samsung_devices);
79
80static struct hid_driver samsung_driver = {
81 .name = "samsung",
82 .id_table = samsung_devices,
83 .report_fixup = samsung_report_fixup,
84 .probe = samsung_probe,
85};
86
87static int samsung_init(void)
88{
89 return hid_register_driver(&samsung_driver);
90}
91
92static void samsung_exit(void)
93{
94 hid_unregister_driver(&samsung_driver);
95}
96
97module_init(samsung_init);
98module_exit(samsung_exit);
99MODULE_LICENSE("GPL");
100
101HID_COMPAT_LOAD_DRIVER(samsung);