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baa120439a
The mouse portion of the device's Report Descriptor declares 5 buttons but only declares 3 usages (Button 1 through Button 3). As a result events for the 2 side buttons are not generated. Detect and repair the Report Descriptor if necessary by changing the Usage Maximum value from Button 3 to Button 5. [jkosina@suse.com: standardize changelog a little bit] Reported-by: Artem <temabiill@gmail.com> Closes: https://lore.kernel.org/all/CADYkRmrfhRf6VmQjc+su+mepyv=TsHc+aMcL6ryRZ5HTZ8pyFg@mail.gmail.com/ Signed-off-by: Terry Junge <linuxhid@cosmicgizmosystems.com> Tested-by: Artem <temabiill@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.com>
76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* HID driver for EVision devices
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* For now, only ignore bogus consumer reports
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* sent after the keyboard has been configured
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*
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* Copyright (c) 2022 Philippe Valembois
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*/
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#include <linux/device.h>
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#include <linux/input.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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static int evision_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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/* mapping only applies to USB_DEVICE_ID_EVISION_ICL01 */
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if (hdev->product != USB_DEVICE_ID_EVISION_ICL01)
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return 0;
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if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
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return 0;
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/* Ignore key down event */
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if ((usage->hid & HID_USAGE) >> 8 == 0x05)
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return -1;
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/* Ignore key up event */
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if ((usage->hid & HID_USAGE) >> 8 == 0x06)
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return -1;
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switch (usage->hid & HID_USAGE) {
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/* Ignore configuration saved event */
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case 0x0401: return -1;
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/* Ignore reset event */
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case 0x0402: return -1;
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}
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return 0;
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}
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#define REP_DSC_SIZE 236
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#define USAGE_MAX_INDEX 59
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static const __u8 *evision_report_fixup(struct hid_device *hdev, __u8 *rdesc,
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unsigned int *rsize)
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{
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if (hdev->product == USB_DEVICE_ID_EV_TELINK_RECEIVER &&
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*rsize == REP_DSC_SIZE && rdesc[USAGE_MAX_INDEX] == 0x29 &&
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rdesc[USAGE_MAX_INDEX + 1] == 3) {
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hid_info(hdev, "fixing EVision:TeLink Receiver report descriptor\n");
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rdesc[USAGE_MAX_INDEX + 1] = 5; // change usage max from 3 to 5
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}
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return rdesc;
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}
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static const struct hid_device_id evision_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_EVISION, USB_DEVICE_ID_EVISION_ICL01) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_EVISION, USB_DEVICE_ID_EV_TELINK_RECEIVER) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, evision_devices);
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static struct hid_driver evision_driver = {
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.name = "evision",
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.id_table = evision_devices,
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.input_mapping = evision_input_mapping,
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.report_fixup = evision_report_fixup,
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};
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module_hid_driver(evision_driver);
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MODULE_DESCRIPTION("HID driver for EVision devices");
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MODULE_LICENSE("GPL");
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