146 lines
4.4 KiB
C
146 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* HID driver for some ITE "special" devices
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* Copyright (c) 2017 Hans de Goede <hdegoede@redhat.com>
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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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#define QUIRK_TOUCHPAD_ON_OFF_REPORT BIT(0)
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static __u8 *ite_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize)
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{
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unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
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if (quirks & QUIRK_TOUCHPAD_ON_OFF_REPORT) {
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/* For Acer Aspire Switch 10 SW5-012 keyboard-dock */
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if (*rsize == 188 && rdesc[162] == 0x81 && rdesc[163] == 0x02) {
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hid_info(hdev, "Fixing up Acer Sw5-012 ITE keyboard report descriptor\n");
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rdesc[163] = HID_MAIN_ITEM_RELATIVE;
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}
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/* For Acer One S1002/S1003 keyboard-dock */
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if (*rsize == 188 && rdesc[185] == 0x81 && rdesc[186] == 0x02) {
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hid_info(hdev, "Fixing up Acer S1002/S1003 ITE keyboard report descriptor\n");
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rdesc[186] = HID_MAIN_ITEM_RELATIVE;
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}
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/* For Acer Aspire Switch 10E (SW3-016) keyboard-dock */
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if (*rsize == 210 && rdesc[184] == 0x81 && rdesc[185] == 0x02) {
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hid_info(hdev, "Fixing up Acer Aspire Switch 10E (SW3-016) ITE keyboard report descriptor\n");
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rdesc[185] = HID_MAIN_ITEM_RELATIVE;
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}
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}
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return rdesc;
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}
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static int ite_input_mapping(struct hid_device *hdev,
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struct hid_input *hi, struct hid_field *field,
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struct hid_usage *usage, unsigned long **bit,
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int *max)
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{
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unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
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if ((quirks & QUIRK_TOUCHPAD_ON_OFF_REPORT) &&
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(usage->hid & HID_USAGE_PAGE) == 0x00880000) {
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if (usage->hid == 0x00880078) {
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/* Touchpad on, userspace expects F22 for this */
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hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_F22);
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return 1;
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}
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if (usage->hid == 0x00880079) {
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/* Touchpad off, userspace expects F23 for this */
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hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_F23);
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return 1;
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}
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return -1;
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}
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return 0;
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}
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static int ite_event(struct hid_device *hdev, struct hid_field *field,
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struct hid_usage *usage, __s32 value)
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{
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struct input_dev *input;
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if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput)
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return 0;
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input = field->hidinput->input;
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/*
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* The ITE8595 always reports 0 as value for the rfkill button. Luckily
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* it is the only button in its report, and it sends a report on
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* release only, so receiving a report means the button was pressed.
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*/
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if (usage->hid == HID_GD_RFKILL_BTN) {
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input_event(input, EV_KEY, KEY_RFKILL, 1);
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input_sync(input);
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input_event(input, EV_KEY, KEY_RFKILL, 0);
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input_sync(input);
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return 1;
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}
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return 0;
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}
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static int ite_probe(struct hid_device *hdev, const struct hid_device_id *id)
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{
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int ret;
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hid_set_drvdata(hdev, (void *)id->driver_data);
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ret = hid_open_report(hdev);
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if (ret)
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return ret;
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return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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}
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static const struct hid_device_id ite_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE8595) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_258A, USB_DEVICE_ID_258A_6A88) },
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/* ITE8595 USB kbd ctlr, with Synaptics touchpad connected to it. */
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{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
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USB_VENDOR_ID_SYNAPTICS,
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USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012),
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.driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT },
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/* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */
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{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
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USB_VENDOR_ID_SYNAPTICS,
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USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1002),
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.driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT },
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/* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */
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{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
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USB_VENDOR_ID_SYNAPTICS,
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USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1003),
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.driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT },
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/* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */
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{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
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USB_VENDOR_ID_SYNAPTICS,
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USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_017),
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.driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, ite_devices);
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static struct hid_driver ite_driver = {
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.name = "itetech",
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.id_table = ite_devices,
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.probe = ite_probe,
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.report_fixup = ite_report_fixup,
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.input_mapping = ite_input_mapping,
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.event = ite_event,
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};
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module_hid_driver(ite_driver);
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MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
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MODULE_DESCRIPTION("HID driver for some ITE \"special\" devices");
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MODULE_LICENSE("GPL");
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