Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
0f221320 JS |
2 | /* |
3 | * HID driver for some cypress "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 | |
0f221320 JS |
9 | * Copyright (c) 2008 Jiri Slaby |
10 | */ | |
11 | ||
12 | /* | |
0f221320 JS |
13 | */ |
14 | ||
15 | #include <linux/device.h> | |
16 | #include <linux/hid.h> | |
17 | #include <linux/input.h> | |
18 | #include <linux/module.h> | |
19 | ||
20 | #include "hid-ids.h" | |
21 | ||
22 | #define CP_RDESC_SWAPPED_MIN_MAX 0x01 | |
23 | #define CP_2WHEEL_MOUSE_HACK 0x02 | |
24 | #define CP_2WHEEL_MOUSE_HACK_ON 0x04 | |
25 | ||
652f3d00 FY |
26 | #define VA_INVAL_LOGICAL_BOUNDARY 0x08 |
27 | ||
0f221320 JS |
28 | /* |
29 | * Some USB barcode readers from cypress have usage min and usage max in | |
30 | * the wrong order | |
31 | */ | |
652f3d00 | 32 | static __u8 *cp_rdesc_fixup(struct hid_device *hdev, __u8 *rdesc, |
73e4008d | 33 | unsigned int *rsize) |
0f221320 | 34 | { |
0f221320 JS |
35 | unsigned int i; |
36 | ||
1ebb7114 GKH |
37 | if (*rsize < 4) |
38 | return rdesc; | |
39 | ||
73e4008d | 40 | for (i = 0; i < *rsize - 4; i++) |
0f221320 | 41 | if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) { |
0f221320 JS |
42 | rdesc[i] = 0x19; |
43 | rdesc[i + 2] = 0x29; | |
74a3e0c7 | 44 | swap(rdesc[i + 3], rdesc[i + 1]); |
0f221320 | 45 | } |
73e4008d | 46 | return rdesc; |
0f221320 JS |
47 | } |
48 | ||
652f3d00 FY |
49 | static __u8 *va_logical_boundary_fixup(struct hid_device *hdev, __u8 *rdesc, |
50 | unsigned int *rsize) | |
51 | { | |
52 | /* | |
53 | * Varmilo VA104M (with VID Cypress and device ID 07B1) incorrectly | |
54 | * reports Logical Minimum of its Consumer Control device as 572 | |
55 | * (0x02 0x3c). Fix this by setting its Logical Minimum to zero. | |
56 | */ | |
57 | if (*rsize == 25 && | |
58 | rdesc[0] == 0x05 && rdesc[1] == 0x0c && | |
59 | rdesc[2] == 0x09 && rdesc[3] == 0x01 && | |
60 | rdesc[6] == 0x19 && rdesc[7] == 0x00 && | |
61 | rdesc[11] == 0x16 && rdesc[12] == 0x3c && rdesc[13] == 0x02) { | |
62 | hid_info(hdev, | |
63 | "fixing up varmilo VA104M consumer control report descriptor\n"); | |
64 | rdesc[12] = 0x00; | |
65 | rdesc[13] = 0x00; | |
66 | } | |
67 | return rdesc; | |
68 | } | |
69 | ||
70 | static __u8 *cp_report_fixup(struct hid_device *hdev, __u8 *rdesc, | |
71 | unsigned int *rsize) | |
72 | { | |
73 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
74 | ||
75 | if (quirks & CP_RDESC_SWAPPED_MIN_MAX) | |
76 | rdesc = cp_rdesc_fixup(hdev, rdesc, rsize); | |
77 | if (quirks & VA_INVAL_LOGICAL_BOUNDARY) | |
78 | rdesc = va_logical_boundary_fixup(hdev, rdesc, rsize); | |
79 | ||
80 | return rdesc; | |
81 | } | |
82 | ||
0f221320 JS |
83 | static int cp_input_mapped(struct hid_device *hdev, struct hid_input *hi, |
84 | struct hid_field *field, struct hid_usage *usage, | |
85 | unsigned long **bit, int *max) | |
86 | { | |
87 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
88 | ||
89 | if (!(quirks & CP_2WHEEL_MOUSE_HACK)) | |
90 | return 0; | |
91 | ||
92 | if (usage->type == EV_REL && usage->code == REL_WHEEL) | |
93 | set_bit(REL_HWHEEL, *bit); | |
94 | if (usage->hid == 0x00090005) | |
95 | return -1; | |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
100 | static int cp_event(struct hid_device *hdev, struct hid_field *field, | |
101 | struct hid_usage *usage, __s32 value) | |
102 | { | |
103 | unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); | |
104 | ||
105 | if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput || | |
106 | !usage->type || !(quirks & CP_2WHEEL_MOUSE_HACK)) | |
107 | return 0; | |
108 | ||
109 | if (usage->hid == 0x00090005) { | |
110 | if (value) | |
111 | quirks |= CP_2WHEEL_MOUSE_HACK_ON; | |
112 | else | |
113 | quirks &= ~CP_2WHEEL_MOUSE_HACK_ON; | |
114 | hid_set_drvdata(hdev, (void *)quirks); | |
115 | return 1; | |
116 | } | |
117 | ||
118 | if (usage->code == REL_WHEEL && (quirks & CP_2WHEEL_MOUSE_HACK_ON)) { | |
119 | struct input_dev *input = field->hidinput->input; | |
120 | ||
121 | input_event(input, usage->type, REL_HWHEEL, value); | |
122 | return 1; | |
123 | } | |
124 | ||
125 | return 0; | |
126 | } | |
127 | ||
128 | static int cp_probe(struct hid_device *hdev, const struct hid_device_id *id) | |
129 | { | |
130 | unsigned long quirks = id->driver_data; | |
131 | int ret; | |
132 | ||
133 | hid_set_drvdata(hdev, (void *)quirks); | |
134 | ||
135 | ret = hid_parse(hdev); | |
136 | if (ret) { | |
4291ee30 | 137 | hid_err(hdev, "parse failed\n"); |
0f221320 JS |
138 | goto err_free; |
139 | } | |
140 | ||
93c10132 | 141 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
0f221320 | 142 | if (ret) { |
4291ee30 | 143 | hid_err(hdev, "hw start failed\n"); |
0f221320 JS |
144 | goto err_free; |
145 | } | |
146 | ||
147 | return 0; | |
148 | err_free: | |
149 | return ret; | |
150 | } | |
151 | ||
152 | static const struct hid_device_id cp_devices[] = { | |
153 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1), | |
154 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
155 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2), | |
156 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
e8d0eab4 JK |
157 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3), |
158 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
76c9d8fe LV |
159 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4), |
160 | .driver_data = CP_RDESC_SWAPPED_MIN_MAX }, | |
0f221320 JS |
161 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE), |
162 | .driver_data = CP_2WHEEL_MOUSE_HACK }, | |
652f3d00 FY |
163 | { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_VARMILO_VA104M_07B1), |
164 | .driver_data = VA_INVAL_LOGICAL_BOUNDARY }, | |
0f221320 JS |
165 | { } |
166 | }; | |
167 | MODULE_DEVICE_TABLE(hid, cp_devices); | |
168 | ||
169 | static struct hid_driver cp_driver = { | |
170 | .name = "cypress", | |
171 | .id_table = cp_devices, | |
172 | .report_fixup = cp_report_fixup, | |
173 | .input_mapped = cp_input_mapped, | |
174 | .event = cp_event, | |
175 | .probe = cp_probe, | |
176 | }; | |
f425458e | 177 | module_hid_driver(cp_driver); |
0f221320 | 178 | |
0f221320 | 179 | MODULE_LICENSE("GPL"); |