Commit | Line | Data |
---|---|---|
0f221320 JS |
1 | /* |
2 | * HID driver for some cypress "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/input.h> | |
22 | #include <linux/module.h> | |
23 | ||
24 | #include "hid-ids.h" | |
25 | ||
26 | #define CP_RDESC_SWAPPED_MIN_MAX 0x01 | |
27 | #define CP_2WHEEL_MOUSE_HACK 0x02 | |
28 | #define CP_2WHEEL_MOUSE_HACK_ON 0x04 | |
29 | ||
30 | /* | |
31 | * Some USB barcode readers from cypress have usage min and usage max in | |
32 | * the wrong order | |
33 | */ | |
73e4008d NK |
34 | static __u8 *cp_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
35 | unsigned int *rsize) | |
0f221320 JS |
36 | { |
37 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
38 | unsigned int i; | |
39 | ||
40 | if (!(quirks & CP_RDESC_SWAPPED_MIN_MAX)) | |
73e4008d | 41 | return rdesc; |
0f221320 | 42 | |
73e4008d | 43 | for (i = 0; i < *rsize - 4; i++) |
0f221320 JS |
44 | if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) { |
45 | __u8 tmp; | |
46 | ||
47 | rdesc[i] = 0x19; | |
48 | rdesc[i + 2] = 0x29; | |
49 | tmp = rdesc[i + 3]; | |
50 | rdesc[i + 3] = rdesc[i + 1]; | |
51 | rdesc[i + 1] = tmp; | |
52 | } | |
73e4008d | 53 | return rdesc; |
0f221320 JS |
54 | } |
55 | ||
56 | static int cp_input_mapped(struct hid_device *hdev, struct hid_input *hi, | |
57 | struct hid_field *field, struct hid_usage *usage, | |
58 | unsigned long **bit, int *max) | |
59 | { | |
60 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
61 | ||
62 | if (!(quirks & CP_2WHEEL_MOUSE_HACK)) | |
63 | return 0; | |
64 | ||
65 | if (usage->type == EV_REL && usage->code == REL_WHEEL) | |
66 | set_bit(REL_HWHEEL, *bit); | |
67 | if (usage->hid == 0x00090005) | |
68 | return -1; | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
73 | static int cp_event(struct hid_device *hdev, struct hid_field *field, | |
74 | struct hid_usage *usage, __s32 value) | |
75 | { | |
76 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
77 | ||
78 | if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput || | |
79 | !usage->type || !(quirks & CP_2WHEEL_MOUSE_HACK)) | |
80 | return 0; | |
81 | ||
82 | if (usage->hid == 0x00090005) { | |
83 | if (value) | |
84 | quirks |= CP_2WHEEL_MOUSE_HACK_ON; | |
85 | else | |
86 | quirks &= ~CP_2WHEEL_MOUSE_HACK_ON; | |
87 | hid_set_drvdata(hdev, (void *)quirks); | |
88 | return 1; | |
89 | } | |
90 | ||
91 | if (usage->code == REL_WHEEL && (quirks & CP_2WHEEL_MOUSE_HACK_ON)) { | |
92 | struct input_dev *input = field->hidinput->input; | |
93 | ||
94 | input_event(input, usage->type, REL_HWHEEL, value); | |
95 | return 1; | |
96 | } | |
97 | ||
98 | return 0; | |
99 | } | |
100 | ||
101 | static int cp_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
102 | { | |
103 | unsigned long quirks = id->driver_data; | |
104 | int ret; | |
105 | ||
106 | hid_set_drvdata(hdev, (void *)quirks); | |
107 | ||
108 | ret = hid_parse(hdev); | |
109 | if (ret) { | |
110 | dev_err(&hdev->dev, "parse failed\n"); | |
111 | goto err_free; | |
112 | } | |
113 | ||
93c10132 | 114 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
0f221320 JS |
115 | if (ret) { |
116 | dev_err(&hdev->dev, "hw start failed\n"); | |
117 | goto err_free; | |
118 | } | |
119 | ||
120 | return 0; | |
121 | err_free: | |
122 | return ret; | |
123 | } | |
124 | ||
125 | static const struct hid_device_id cp_devices[] = { | |
126 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1), | |
127 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
128 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2), | |
129 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
e8d0eab4 JK |
130 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3), |
131 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
0f221320 JS |
132 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE), |
133 | .driver_data = CP_2WHEEL_MOUSE_HACK }, | |
134 | { } | |
135 | }; | |
136 | MODULE_DEVICE_TABLE(hid, cp_devices); | |
137 | ||
138 | static struct hid_driver cp_driver = { | |
139 | .name = "cypress", | |
140 | .id_table = cp_devices, | |
141 | .report_fixup = cp_report_fixup, | |
142 | .input_mapped = cp_input_mapped, | |
143 | .event = cp_event, | |
144 | .probe = cp_probe, | |
145 | }; | |
146 | ||
a24f423b | 147 | static int __init cp_init(void) |
0f221320 JS |
148 | { |
149 | return hid_register_driver(&cp_driver); | |
150 | } | |
151 | ||
a24f423b | 152 | static void __exit cp_exit(void) |
0f221320 JS |
153 | { |
154 | hid_unregister_driver(&cp_driver); | |
155 | } | |
156 | ||
157 | module_init(cp_init); | |
158 | module_exit(cp_exit); | |
159 | MODULE_LICENSE("GPL"); |