LXR linux/drivers/hid/hid-keytouch.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  HID driver for Keytouch devices not fully compliant with HID standard
   4 *
   5 *  Copyright (c) 2011 Jiri Kosina
   6 */
   7
   8/*
   9 */
  10
  11#include <linux/device.h>
  12#include <linux/hid.h>
  13#include <linux/module.h>
  14
  15#include "hid-ids.h"
  16
  17/* Replace the broken report descriptor of this device with rather
  18 * a default one */
  19static __u8 keytouch_fixed_rdesc[] = {
  200x05, 0x01, 0x09, 0x06, 0xa1, 0x01, 0x05, 0x07, 0x19, 0xe0, 0x29, 0xe7, 0x15,
  210x00, 0x25, 0x01, 0x75, 0x01, 0x95, 0x08, 0x81, 0x02, 0x95, 0x01, 0x75, 0x08,
  220x81, 0x01, 0x95, 0x03, 0x75, 0x01, 0x05, 0x08, 0x19, 0x01, 0x29, 0x03, 0x91,
  230x02, 0x95, 0x05, 0x75, 0x01, 0x91, 0x01, 0x95, 0x06, 0x75, 0x08, 0x15, 0x00,
  240x26, 0xff, 0x00, 0x05, 0x07, 0x19, 0x00, 0x2a, 0xff, 0x00, 0x81, 0x00, 0xc0
  25};
  26
  27static __u8 *keytouch_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  28                unsigned int *rsize)
  29{
  30        hid_info(hdev, "fixing up Keytouch IEC report descriptor\n");
  31
  32        rdesc = keytouch_fixed_rdesc;
  33        *rsize = sizeof(keytouch_fixed_rdesc);
  34
  35        return rdesc;
  36}
  37
  38static const struct hid_device_id keytouch_devices[] = {
  39        { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
  40        { }
  41};
  42MODULE_DEVICE_TABLE(hid, keytouch_devices);
  43
  44static struct hid_driver keytouch_driver = {
  45        .name = "keytouch",
  46        .id_table = keytouch_devices,
  47        .report_fixup = keytouch_report_fixup,
  48};
  49module_hid_driver(keytouch_driver);
  50
  51MODULE_LICENSE("GPL");
  52MODULE_AUTHOR("Jiri Kosina");
  53