drivers/hid/hid-monterey.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  *  HID driver for some monterey "special" devices
0004  *
0005  *  Copyright (c) 1999 Andreas Gal
0006  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
0007  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
0008  *  Copyright (c) 2006-2007 Jiri Kosina
0009  *  Copyright (c) 2008 Jiri Slaby
0010  */
0011
0012 /*
0013  */
0014
0015 #include <linux/device.h>
0016 #include <linux/hid.h>
0017 #include <linux/module.h>
0018
0019 #include "hid-ids.h"
0020
0021 static __u8 *mr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
0022         unsigned int *rsize)
0023 {
0024     if (*rsize >= 31 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {
0025         hid_info(hdev, "fixing up button/consumer in HID report descriptor\n");
0026         rdesc[30] = 0x0c;
0027     }
0028     return rdesc;
0029 }
0030
0031 #define mr_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
0032                     EV_KEY, (c))
0033 static int mr_input_mapping(struct hid_device *hdev, struct hid_input *hi,
0034         struct hid_field *field, struct hid_usage *usage,
0035         unsigned long **bit, int *max)
0036 {
0037     if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
0038         return 0;
0039
0040     switch (usage->hid & HID_USAGE) {
0041     case 0x156: mr_map_key_clear(KEY_WORDPROCESSOR);    break;
0042     case 0x157: mr_map_key_clear(KEY_SPREADSHEET);      break;
0043     case 0x158: mr_map_key_clear(KEY_PRESENTATION);     break;
0044     case 0x15c: mr_map_key_clear(KEY_STOP);         break;
0045     default:
0046         return 0;
0047     }
0048     return 1;
0049 }
0050
0051 static const struct hid_device_id mr_devices[] = {
0052     { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
0053     { }
0054 };
0055 MODULE_DEVICE_TABLE(hid, mr_devices);
0056
0057 static struct hid_driver mr_driver = {
0058     .name = "monterey",
0059     .id_table = mr_devices,
0060     .report_fixup = mr_report_fixup,
0061     .input_mapping = mr_input_mapping,
0062 };
0063 module_hid_driver(mr_driver);
0064
0065 MODULE_LICENSE("GPL");