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 | |
0f221320 JS |
8 | * Copyright (c) 2008 Jiri Slaby |
9 | */ | |
10 | ||
11 | /* | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the Free | |
14 | * Software Foundation; either version 2 of the License, or (at your option) | |
15 | * any later version. | |
16 | */ | |
17 | ||
18 | #include <linux/device.h> | |
19 | #include <linux/hid.h> | |
20 | #include <linux/input.h> | |
21 | #include <linux/module.h> | |
22 | ||
23 | #include "hid-ids.h" | |
24 | ||
25 | #define CP_RDESC_SWAPPED_MIN_MAX 0x01 | |
26 | #define CP_2WHEEL_MOUSE_HACK 0x02 | |
27 | #define CP_2WHEEL_MOUSE_HACK_ON 0x04 | |
28 | ||
29 | /* | |
30 | * Some USB barcode readers from cypress have usage min and usage max in | |
31 | * the wrong order | |
32 | */ | |
73e4008d NK |
33 | static __u8 *cp_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
34 | unsigned int *rsize) | |
0f221320 JS |
35 | { |
36 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
37 | unsigned int i; | |
38 | ||
39 | if (!(quirks & CP_RDESC_SWAPPED_MIN_MAX)) | |
73e4008d | 40 | return rdesc; |
0f221320 | 41 | |
a2f72714 GKH |
42 | if (*rsize < 4) |
43 | return rdesc; | |
44 | ||
73e4008d | 45 | for (i = 0; i < *rsize - 4; i++) |
0f221320 | 46 | if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) { |
0f221320 JS |
47 | rdesc[i] = 0x19; |
48 | rdesc[i + 2] = 0x29; | |
74a3e0c7 | 49 | swap(rdesc[i + 3], rdesc[i + 1]); |
0f221320 | 50 | } |
73e4008d | 51 | return rdesc; |
0f221320 JS |
52 | } |
53 | ||
54 | static int cp_input_mapped(struct hid_device *hdev, struct hid_input *hi, | |
55 | struct hid_field *field, struct hid_usage *usage, | |
56 | unsigned long **bit, int *max) | |
57 | { | |
58 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
59 | ||
60 | if (!(quirks & CP_2WHEEL_MOUSE_HACK)) | |
61 | return 0; | |
62 | ||
63 | if (usage->type == EV_REL && usage->code == REL_WHEEL) | |
64 | set_bit(REL_HWHEEL, *bit); | |
65 | if (usage->hid == 0x00090005) | |
66 | return -1; | |
67 | ||
68 | return 0; | |
69 | } | |
70 | ||
71 | static int cp_event(struct hid_device *hdev, struct hid_field *field, | |
72 | struct hid_usage *usage, __s32 value) | |
73 | { | |
74 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
75 | ||
76 | if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput || | |
77 | !usage->type || !(quirks & CP_2WHEEL_MOUSE_HACK)) | |
78 | return 0; | |
79 | ||
80 | if (usage->hid == 0x00090005) { | |
81 | if (value) | |
82 | quirks |= CP_2WHEEL_MOUSE_HACK_ON; | |
83 | else | |
84 | quirks &= ~CP_2WHEEL_MOUSE_HACK_ON; | |
85 | hid_set_drvdata(hdev, (void *)quirks); | |
86 | return 1; | |
87 | } | |
88 | ||
89 | if (usage->code == REL_WHEEL && (quirks & CP_2WHEEL_MOUSE_HACK_ON)) { | |
90 | struct input_dev *input = field->hidinput->input; | |
91 | ||
92 | input_event(input, usage->type, REL_HWHEEL, value); | |
93 | return 1; | |
94 | } | |
95 | ||
96 | return 0; | |
97 | } | |
98 | ||
99 | static int cp_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
100 | { | |
101 | unsigned long quirks = id->driver_data; | |
102 | int ret; | |
103 | ||
104 | hid_set_drvdata(hdev, (void *)quirks); | |
105 | ||
106 | ret = hid_parse(hdev); | |
107 | if (ret) { | |
4291ee30 | 108 | hid_err(hdev, "parse failed\n"); |
0f221320 JS |
109 | goto err_free; |
110 | } | |
111 | ||
93c10132 | 112 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
0f221320 | 113 | if (ret) { |
4291ee30 | 114 | hid_err(hdev, "hw start failed\n"); |
0f221320 JS |
115 | goto err_free; |
116 | } | |
117 | ||
118 | return 0; | |
119 | err_free: | |
120 | return ret; | |
121 | } | |
122 | ||
123 | static const struct hid_device_id cp_devices[] = { | |
124 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1), | |
125 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
126 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2), | |
127 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
e8d0eab4 JK |
128 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3), |
129 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
76c9d8fe LV |
130 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4), |
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 | }; | |
f425458e | 146 | module_hid_driver(cp_driver); |
0f221320 | 147 | |
0f221320 | 148 | MODULE_LICENSE("GPL"); |