12874c5fdSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 23b239cd7SJiri Slaby /* 33b239cd7SJiri Slaby * HID driver for some cherry "special" devices 43b239cd7SJiri Slaby * 53b239cd7SJiri Slaby * Copyright (c) 1999 Andreas Gal 63b239cd7SJiri Slaby * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> 73b239cd7SJiri Slaby * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc 83b239cd7SJiri Slaby * Copyright (c) 2006-2007 Jiri Kosina 93b239cd7SJiri Slaby * Copyright (c) 2008 Jiri Slaby 103b239cd7SJiri Slaby */ 113b239cd7SJiri Slaby 123b239cd7SJiri Slaby /* 133b239cd7SJiri Slaby */ 143b239cd7SJiri Slaby 153b239cd7SJiri Slaby #include <linux/device.h> 163b239cd7SJiri Slaby #include <linux/hid.h> 173b239cd7SJiri Slaby #include <linux/module.h> 183b239cd7SJiri Slaby 193b239cd7SJiri Slaby #include "hid-ids.h" 203b239cd7SJiri Slaby 213b239cd7SJiri Slaby /* 223b239cd7SJiri Slaby * Cherry Cymotion keyboard have an invalid HID report descriptor, 233b239cd7SJiri Slaby * that needs fixing before we can parse it. 243b239cd7SJiri Slaby */ 2573e4008dSNikolai Kondrashov static __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc, 2673e4008dSNikolai Kondrashov unsigned int *rsize) 273b239cd7SJiri Slaby { 284ab25786SJiri Kosina if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) { 294291ee30SJoe Perches hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n"); 303b239cd7SJiri Slaby rdesc[11] = rdesc[16] = 0xff; 313b239cd7SJiri Slaby rdesc[12] = rdesc[17] = 0x03; 323b239cd7SJiri Slaby } 3373e4008dSNikolai Kondrashov return rdesc; 343b239cd7SJiri Slaby } 353b239cd7SJiri Slaby 363b239cd7SJiri Slaby #define ch_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ 373b239cd7SJiri Slaby EV_KEY, (c)) 383b239cd7SJiri Slaby static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi, 393b239cd7SJiri Slaby struct hid_field *field, struct hid_usage *usage, 403b239cd7SJiri Slaby unsigned long **bit, int *max) 413b239cd7SJiri Slaby { 423b239cd7SJiri Slaby if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER) 433b239cd7SJiri Slaby return 0; 443b239cd7SJiri Slaby 453b239cd7SJiri Slaby switch (usage->hid & HID_USAGE) { 463b239cd7SJiri Slaby case 0x301: ch_map_key_clear(KEY_PROG1); break; 473b239cd7SJiri Slaby case 0x302: ch_map_key_clear(KEY_PROG2); break; 483b239cd7SJiri Slaby case 0x303: ch_map_key_clear(KEY_PROG3); break; 493b239cd7SJiri Slaby default: 503b239cd7SJiri Slaby return 0; 513b239cd7SJiri Slaby } 523b239cd7SJiri Slaby 533b239cd7SJiri Slaby return 1; 543b239cd7SJiri Slaby } 553b239cd7SJiri Slaby 563b239cd7SJiri Slaby static const struct hid_device_id ch_devices[] = { 573b239cd7SJiri Slaby { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, 581ce31b25SRaphaël Doursenaud { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) }, 593b239cd7SJiri Slaby { } 603b239cd7SJiri Slaby }; 613b239cd7SJiri Slaby MODULE_DEVICE_TABLE(hid, ch_devices); 623b239cd7SJiri Slaby 633b239cd7SJiri Slaby static struct hid_driver ch_driver = { 643b239cd7SJiri Slaby .name = "cherry", 653b239cd7SJiri Slaby .id_table = ch_devices, 663b239cd7SJiri Slaby .report_fixup = ch_report_fixup, 673b239cd7SJiri Slaby .input_mapping = ch_input_mapping, 683b239cd7SJiri Slaby }; 69f425458eSH Hartley Sweeten module_hid_driver(ch_driver); 703b239cd7SJiri Slaby 71*9d262f35SJeff Johnson MODULE_DESCRIPTION("HID driver for some cherry \"special\" devices"); 723b239cd7SJiri Slaby MODULE_LICENSE("GPL"); 73