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71 lines
1.8 KiB
71 lines
1.8 KiB
// 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 <[email protected]> |
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* Copyright (c) 2005 Michael Haboustak <[email protected]> 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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