diff options
Diffstat (limited to 'drivers/hid/hid-chicony.c')
| -rw-r--r-- | drivers/hid/hid-chicony.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/hid/hid-chicony.c b/drivers/hid/hid-chicony.c new file mode 100644 index 000000000..e19e2b597 --- /dev/null +++ b/drivers/hid/hid-chicony.c @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * HID driver for some chicony "special" devices + * + * Copyright (c) 1999 Andreas Gal + * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> + * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc + * Copyright (c) 2006-2007 Jiri Kosina + * Copyright (c) 2007 Paul Walmsley + * Copyright (c) 2008 Jiri Slaby + */ + +/* + */ + +#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_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, + struct hid_field *field, struct hid_usage *usage, + unsigned long **bit, int *max) +{ + if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR) + return 0; + + set_bit(EV_REP, hi->input->evbit); + switch (usage->hid & HID_USAGE) { + case 0xff01: ch_map_key_clear(BTN_1); break; + case 0xff02: ch_map_key_clear(BTN_2); break; + case 0xff03: ch_map_key_clear(BTN_3); break; + case 0xff04: ch_map_key_clear(BTN_4); break; + case 0xff05: ch_map_key_clear(BTN_5); break; + case 0xff06: ch_map_key_clear(BTN_6); break; + case 0xff07: ch_map_key_clear(BTN_7); break; + case 0xff08: ch_map_key_clear(BTN_8); break; + case 0xff09: ch_map_key_clear(BTN_9); break; + case 0xff0a: ch_map_key_clear(BTN_A); break; + case 0xff0b: ch_map_key_clear(BTN_B); break; + case 0x00f1: ch_map_key_clear(KEY_WLAN); break; + case 0x00f2: ch_map_key_clear(KEY_BRIGHTNESSDOWN); break; + case 0x00f3: ch_map_key_clear(KEY_BRIGHTNESSUP); break; + case 0x00f4: ch_map_key_clear(KEY_DISPLAY_OFF); break; + case 0x00f7: ch_map_key_clear(KEY_CAMERA); break; + case 0x00f8: ch_map_key_clear(KEY_PROG1); break; + default: + return 0; + } + return 1; +} + +static __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) +{ + struct usb_interface *intf; + + if (!hid_is_usb(hdev)) + return rdesc; + + 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 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_ACER_SWITCH12) }, + { } +}; +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, +}; +module_hid_driver(ch_driver); + +MODULE_LICENSE("GPL"); |