These changes are the raw update to linux-4.4.6-rt14. Kernel sources
[kvmfornfv.git] / kernel / drivers / hid / hid-chicony.c
1 /*
2  *  HID driver for some chicony "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/input.h>
21 #include <linux/hid.h>
22 #include <linux/module.h>
23 #include <linux/usb.h>
24
25 #include "hid-ids.h"
26
27 #define ch_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
28                                         EV_KEY, (c))
29 static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
30                 struct hid_field *field, struct hid_usage *usage,
31                 unsigned long **bit, int *max)
32 {
33         if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
34                 return 0;
35
36         set_bit(EV_REP, hi->input->evbit);
37         switch (usage->hid & HID_USAGE) {
38         case 0xff01: ch_map_key_clear(BTN_1);   break;
39         case 0xff02: ch_map_key_clear(BTN_2);   break;
40         case 0xff03: ch_map_key_clear(BTN_3);   break;
41         case 0xff04: ch_map_key_clear(BTN_4);   break;
42         case 0xff05: ch_map_key_clear(BTN_5);   break;
43         case 0xff06: ch_map_key_clear(BTN_6);   break;
44         case 0xff07: ch_map_key_clear(BTN_7);   break;
45         case 0xff08: ch_map_key_clear(BTN_8);   break;
46         case 0xff09: ch_map_key_clear(BTN_9);   break;
47         case 0xff0a: ch_map_key_clear(BTN_A);   break;
48         case 0xff0b: ch_map_key_clear(BTN_B);   break;
49         case 0x00f1: ch_map_key_clear(KEY_WLAN);        break;
50         case 0x00f2: ch_map_key_clear(KEY_BRIGHTNESSDOWN);      break;
51         case 0x00f3: ch_map_key_clear(KEY_BRIGHTNESSUP);        break;
52         case 0x00f4: ch_map_key_clear(KEY_DISPLAY_OFF); break;
53         case 0x00f7: ch_map_key_clear(KEY_CAMERA);      break;
54         case 0x00f8: ch_map_key_clear(KEY_PROG1);       break;
55         default:
56                 return 0;
57         }
58         return 1;
59 }
60
61 static __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc,
62                 unsigned int *rsize)
63 {
64         struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
65         
66         if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
67                 /* Change usage maximum and logical maximum from 0x7fff to
68                  * 0x2fff, so they don't exceed HID_MAX_USAGES */
69                 switch (hdev->product) {
70                 case USB_DEVICE_ID_CHICONY_ACER_SWITCH12:
71                         if (*rsize >= 128 && rdesc[64] == 0xff && rdesc[65] == 0x7f
72                                         && rdesc[69] == 0xff && rdesc[70] == 0x7f) {
73                                 hid_info(hdev, "Fixing up report descriptor\n");
74                                 rdesc[65] = rdesc[70] = 0x2f;
75                         }
76                         break;
77                 }
78
79         }
80         return rdesc;
81 }
82
83
84 static const struct hid_device_id ch_devices[] = {
85         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
86         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
87         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
88         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
89         { }
90 };
91 MODULE_DEVICE_TABLE(hid, ch_devices);
92
93 static struct hid_driver ch_driver = {
94         .name = "chicony",
95         .id_table = ch_devices,
96         .report_fixup = ch_switch12_report_fixup,
97         .input_mapping = ch_input_mapping,
98 };
99 module_hid_driver(ch_driver);
100
101 MODULE_LICENSE("GPL");