^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * HID driver for some a4tech "special" devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 1999 Andreas Gal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (c) 2006-2007 Jiri Kosina
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (c) 2008 Jiri Slaby
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/hid.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "hid-ids.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define A4_2WHEEL_MOUSE_HACK_7 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define A4_2WHEEL_MOUSE_HACK_B8 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define A4_WHEEL_ORIENTATION (HID_UP_GENDESK | 0x000000b8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct a4tech_sc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) unsigned long quirks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) unsigned int hw_wheel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) __s32 delayed_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int a4_input_mapping(struct hid_device *hdev, struct hid_input *hi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct hid_field *field, struct hid_usage *usage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) unsigned long **bit, int *max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct a4tech_sc *a4 = hid_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (a4->quirks & A4_2WHEEL_MOUSE_HACK_B8 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) usage->hid == A4_WHEEL_ORIENTATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * We do not want to have this usage mapped to anything as it's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * nonstandard and doesn't really behave like an HID report.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * It's only selecting the orientation (vertical/horizontal) of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * the previous mouse wheel report. The input_events will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * generated once both reports are recorded in a4_event().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static int a4_input_mapped(struct hid_device *hdev, struct hid_input *hi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct hid_field *field, struct hid_usage *usage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) unsigned long **bit, int *max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct a4tech_sc *a4 = hid_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (usage->type == EV_REL && usage->code == REL_WHEEL_HI_RES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) set_bit(REL_HWHEEL, *bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) set_bit(REL_HWHEEL_HI_RES, *bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if ((a4->quirks & A4_2WHEEL_MOUSE_HACK_7) && usage->hid == 0x00090007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static int a4_event(struct hid_device *hdev, struct hid_field *field,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct hid_usage *usage, __s32 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct a4tech_sc *a4 = hid_get_drvdata(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) input = field->hidinput->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (a4->quirks & A4_2WHEEL_MOUSE_HACK_B8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (usage->type == EV_REL && usage->code == REL_WHEEL_HI_RES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) a4->delayed_value = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (usage->hid == A4_WHEEL_ORIENTATION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) input_event(input, EV_REL, value ? REL_HWHEEL :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) REL_WHEEL, a4->delayed_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) input_event(input, EV_REL, value ? REL_HWHEEL_HI_RES :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) REL_WHEEL_HI_RES, a4->delayed_value * 120);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if ((a4->quirks & A4_2WHEEL_MOUSE_HACK_7) && usage->hid == 0x00090007) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) a4->hw_wheel = !!value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (usage->code == REL_WHEEL_HI_RES && a4->hw_wheel) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) input_event(input, usage->type, REL_HWHEEL, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) input_event(input, usage->type, REL_HWHEEL_HI_RES, value * 120);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static int a4_probe(struct hid_device *hdev, const struct hid_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct a4tech_sc *a4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) a4 = devm_kzalloc(&hdev->dev, sizeof(*a4), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (a4 == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) hid_err(hdev, "can't alloc device descriptor\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) a4->quirks = id->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) hid_set_drvdata(hdev, a4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ret = hid_parse(hdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) hid_err(hdev, "parse failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) hid_err(hdev, "hw start failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static const struct hid_device_id a4_devices[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .driver_data = A4_2WHEEL_MOUSE_HACK_7 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .driver_data = A4_2WHEEL_MOUSE_HACK_B8 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .driver_data = A4_2WHEEL_MOUSE_HACK_B8 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_NB_95),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .driver_data = A4_2WHEEL_MOUSE_HACK_B8 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) MODULE_DEVICE_TABLE(hid, a4_devices);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static struct hid_driver a4_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .name = "a4tech",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .id_table = a4_devices,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .input_mapping = a4_input_mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) .input_mapped = a4_input_mapped,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) .event = a4_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .probe = a4_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) module_hid_driver(a4_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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