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9a1d78a378
Acer Aspire Switch 12 keyboard Chicony's controller reports too big usage index on the 1st interface. The patch fixes the report. The work based on solution from drivers/hid/hid-holtek-mouse.c Bug report: https://bugzilla.kernel.org/show_bug.cgi?id=101721 Signed-off-by: Nicholas Kudriavtsev <nkudriavtsev@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.com>
101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
/*
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* HID driver for some chicony "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) 2007 Paul Walmsley
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* Copyright (c) 2008 Jiri Slaby
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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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 <linux/usb.h>
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#include "hid-ids.h"
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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_MSVENDOR)
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return 0;
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set_bit(EV_REP, hi->input->evbit);
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switch (usage->hid & HID_USAGE) {
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case 0xff01: ch_map_key_clear(BTN_1); break;
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case 0xff02: ch_map_key_clear(BTN_2); break;
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case 0xff03: ch_map_key_clear(BTN_3); break;
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case 0xff04: ch_map_key_clear(BTN_4); break;
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case 0xff05: ch_map_key_clear(BTN_5); break;
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case 0xff06: ch_map_key_clear(BTN_6); break;
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case 0xff07: ch_map_key_clear(BTN_7); break;
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case 0xff08: ch_map_key_clear(BTN_8); break;
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case 0xff09: ch_map_key_clear(BTN_9); break;
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case 0xff0a: ch_map_key_clear(BTN_A); break;
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case 0xff0b: ch_map_key_clear(BTN_B); break;
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case 0x00f1: ch_map_key_clear(KEY_WLAN); break;
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case 0x00f2: ch_map_key_clear(KEY_BRIGHTNESSDOWN); break;
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case 0x00f3: ch_map_key_clear(KEY_BRIGHTNESSUP); break;
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case 0x00f4: ch_map_key_clear(KEY_DISPLAY_OFF); break;
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case 0x00f7: ch_map_key_clear(KEY_CAMERA); break;
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case 0x00f8: ch_map_key_clear(KEY_PROG1); 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 __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc,
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unsigned int *rsize)
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{
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
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/* Change usage maximum and logical maximum from 0x7fff to
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* 0x2fff, so they don't exceed HID_MAX_USAGES */
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switch (hdev->product) {
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case USB_DEVICE_ID_CHICONY_ACER_SWITCH12:
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if (*rsize >= 128 && rdesc[64] == 0xff && rdesc[65] == 0x7f
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&& rdesc[69] == 0xff && rdesc[70] == 0x7f) {
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hid_info(hdev, "Fixing up report descriptor\n");
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rdesc[65] = rdesc[70] = 0x2f;
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}
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break;
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}
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}
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return rdesc;
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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_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
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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 = "chicony",
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.id_table = ch_devices,
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.report_fixup = ch_switch12_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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