1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071 |
- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * HID driver for some cherry "special" devices
- *
- * Copyright (c) 1999 Andreas Gal
- * Copyright (c) 2000-2005 Vojtech Pavlik <[email protected]>
- * Copyright (c) 2005 Michael Haboustak <[email protected]> for Concept2, Inc
- * Copyright (c) 2006-2007 Jiri Kosina
- * Copyright (c) 2008 Jiri Slaby
- */
- /*
- */
- #include <linux/device.h>
- #include <linux/hid.h>
- #include <linux/module.h>
- #include "hid-ids.h"
- /*
- * Cherry Cymotion keyboard have an invalid HID report descriptor,
- * that needs fixing before we can parse it.
- */
- static __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc,
- unsigned int *rsize)
- {
- if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
- hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n");
- rdesc[11] = rdesc[16] = 0xff;
- rdesc[12] = rdesc[17] = 0x03;
- }
- return rdesc;
- }
- #define ch_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
- EV_KEY, (c))
- static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
- struct hid_field *field, struct hid_usage *usage,
- unsigned long **bit, int *max)
- {
- if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
- return 0;
- switch (usage->hid & HID_USAGE) {
- case 0x301: ch_map_key_clear(KEY_PROG1); break;
- case 0x302: ch_map_key_clear(KEY_PROG2); break;
- case 0x303: ch_map_key_clear(KEY_PROG3); break;
- default:
- return 0;
- }
- return 1;
- }
- static const struct hid_device_id ch_devices[] = {
- { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
- { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
- { }
- };
- MODULE_DEVICE_TABLE(hid, ch_devices);
- static struct hid_driver ch_driver = {
- .name = "cherry",
- .id_table = ch_devices,
- .report_fixup = ch_report_fixup,
- .input_mapping = ch_input_mapping,
- };
- module_hid_driver(ch_driver);
- MODULE_LICENSE("GPL");
|