diff options
Diffstat (limited to 'drivers/hid/hid-chicony.c')
| -rw-r--r-- | drivers/hid/hid-chicony.c | 91 |
1 files changed, 86 insertions, 5 deletions
diff --git a/drivers/hid/hid-chicony.c b/drivers/hid/hid-chicony.c index b613d5a79684..5776ec2e7159 100644 --- a/drivers/hid/hid-chicony.c +++ b/drivers/hid/hid-chicony.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for some chicony "special" devices * @@ -10,19 +11,49 @@ */ /* - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. */ #include <linux/device.h> #include <linux/input.h> #include <linux/hid.h> #include <linux/module.h> +#include <linux/usb.h> #include "hid-ids.h" +#define CH_WIRELESS_CTL_REPORT_ID 0x11 + +static int ch_report_wireless(struct hid_report *report, u8 *data, int size) +{ + struct hid_device *hdev = report->device; + struct input_dev *input; + + if (report->id != CH_WIRELESS_CTL_REPORT_ID || report->maxfield != 1) + return 0; + + input = report->field[0]->hidinput->input; + if (!input) { + hid_warn(hdev, "can't find wireless radio control's input"); + return 0; + } + + input_report_key(input, KEY_RFKILL, 1); + input_sync(input); + input_report_key(input, KEY_RFKILL, 0); + input_sync(input); + + return 1; +} + +static int ch_raw_event(struct hid_device *hdev, + struct hid_report *report, u8 *data, int size) +{ + if (report->application == HID_GD_WIRELESS_RADIO_CTLS) + return ch_report_wireless(report, data, size); + + return 0; +} + #define ch_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ EV_KEY, (c)) static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi, @@ -57,10 +88,56 @@ static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi, return 1; } +static const __u8 *ch_switch12_report_fixup(struct hid_device *hdev, + __u8 *rdesc, unsigned int *rsize) +{ + struct usb_interface *intf = to_usb_interface(hdev->dev.parent); + + if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { + /* Change usage maximum and logical maximum from 0x7fff to + * 0x2fff, so they don't exceed HID_MAX_USAGES */ + switch (hdev->product) { + case USB_DEVICE_ID_CHICONY_ACER_SWITCH12: + if (*rsize >= 128 && rdesc[64] == 0xff && rdesc[65] == 0x7f + && rdesc[69] == 0xff && rdesc[70] == 0x7f) { + hid_info(hdev, "Fixing up report descriptor\n"); + rdesc[65] = rdesc[70] = 0x2f; + } + break; + } + + } + return rdesc; +} + +static int ch_probe(struct hid_device *hdev, const struct hid_device_id *id) +{ + int ret; + + if (!hid_is_usb(hdev)) + return -EINVAL; + + hdev->quirks |= HID_QUIRK_INPUT_PER_APP; + ret = hid_parse(hdev); + if (ret) { + hid_err(hdev, "Chicony hid parse failed: %d\n", ret); + return ret; + } + + ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); + if (ret) { + hid_err(hdev, "Chicony hw start failed: %d\n", ret); + return ret; + } + + return 0; +} + static const struct hid_device_id ch_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) }, - { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS3) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) }, { } }; MODULE_DEVICE_TABLE(hid, ch_devices); @@ -68,8 +145,12 @@ MODULE_DEVICE_TABLE(hid, ch_devices); static struct hid_driver ch_driver = { .name = "chicony", .id_table = ch_devices, + .report_fixup = ch_switch12_report_fixup, .input_mapping = ch_input_mapping, + .probe = ch_probe, + .raw_event = ch_raw_event, }; module_hid_driver(ch_driver); +MODULE_DESCRIPTION("HID driver for some chicony \"special\" devices"); MODULE_LICENSE("GPL"); |