2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* HID driver for some cherry "special" devices
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*
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* Copyright (c) 1999 Andreas Gal
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* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
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* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
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* Copyright (c) 2006-2007 Jiri Kosina
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* Copyright (c) 2008 Jiri Slaby
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*/
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/*
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*/
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include "hid-ids.h"
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/*
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* Cherry Cymotion keyboard have an invalid HID report descriptor,
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* that needs fixing before we can parse it.
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*/
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static __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc,
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unsigned int *rsize)
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{
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if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
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hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n");
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rdesc[11] = rdesc[16] = 0xff;
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rdesc[12] = rdesc[17] = 0x03;
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}
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return rdesc;
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}
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#define ch_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
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EV_KEY, (c))
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static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
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struct hid_field *field, struct hid_usage *usage,
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unsigned long **bit, int *max)
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{
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if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
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return 0;
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switch (usage->hid & HID_USAGE) {
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case 0x301: ch_map_key_clear(KEY_PROG1); break;
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case 0x302: ch_map_key_clear(KEY_PROG2); break;
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case 0x303: ch_map_key_clear(KEY_PROG3); break;
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default:
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return 0;
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}
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return 1;
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}
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static const struct hid_device_id ch_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, ch_devices);
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static struct hid_driver ch_driver = {
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.name = "cherry",
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.id_table = ch_devices,
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.report_fixup = ch_report_fixup,
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.input_mapping = ch_input_mapping,
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};
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module_hid_driver(ch_driver);
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MODULE_LICENSE("GPL");
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