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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 | // SPDX-License-Identifier: GPL-2.0-or-later /* * HID driver for Saitek devices. * * PS1000 (USB gamepad): * Fixes the HID report descriptor by removing a non-existent axis and * clearing the constant bit on the input reports for buttons and d-pad. * (This module is based on "hid-ortek".) * Copyright (c) 2012 Andreas Hübner * * R.A.T.7, R.A.T.9, M.M.O.7 (USB gaming mice): * Fixes the mode button which cycles through three constantly pressed * buttons. All three press events are mapped to one button and the * missing release event is generated immediately. */ /* */ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> #include <linux/kernel.h> #include "hid-ids.h" #define SAITEK_FIX_PS1000 0x0001 #define SAITEK_RELEASE_MODE_RAT7 0x0002 #define SAITEK_RELEASE_MODE_MMO7 0x0004 struct saitek_sc { unsigned long quirks; int mode; }; static int saitek_probe(struct hid_device *hdev, const struct hid_device_id *id) { unsigned long quirks = id->driver_data; struct saitek_sc *ssc; int ret; ssc = devm_kzalloc(&hdev->dev, sizeof(*ssc), GFP_KERNEL); if (ssc == NULL) { hid_err(hdev, "can't alloc saitek descriptor\n"); return -ENOMEM; } ssc->quirks = quirks; ssc->mode = -1; hid_set_drvdata(hdev, ssc); ret = hid_parse(hdev); if (ret) { hid_err(hdev, "parse failed\n"); return ret; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); if (ret) { hid_err(hdev, "hw start failed\n"); return ret; } return 0; } static __u8 *saitek_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { struct saitek_sc *ssc = hid_get_drvdata(hdev); if ((ssc->quirks & SAITEK_FIX_PS1000) && *rsize == 137 && rdesc[20] == 0x09 && rdesc[21] == 0x33 && rdesc[94] == 0x81 && rdesc[95] == 0x03 && rdesc[110] == 0x81 && rdesc[111] == 0x03) { hid_info(hdev, "Fixing up Saitek PS1000 report descriptor\n"); /* convert spurious axis to a "noop" Logical Minimum (0) */ rdesc[20] = 0x15; rdesc[21] = 0x00; /* clear constant bit on buttons and d-pad */ rdesc[95] = 0x02; rdesc[111] = 0x02; } return rdesc; } static int saitek_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *raw_data, int size) { struct saitek_sc *ssc = hid_get_drvdata(hdev); if (ssc->quirks & SAITEK_RELEASE_MODE_RAT7 && size == 7) { /* R.A.T.7 uses bits 13, 14, 15 for the mode */ int mode = -1; if (raw_data[1] & 0x01) mode = 0; else if (raw_data[1] & 0x02) mode = 1; else if (raw_data[1] & 0x04) mode = 2; /* clear mode bits */ raw_data[1] &= ~0x07; if (mode != ssc->mode) { hid_dbg(hdev, "entered mode %d\n", mode); if (ssc->mode != -1) { /* use bit 13 as the mode button */ raw_data[1] |= 0x04; } ssc->mode = mode; } } else if (ssc->quirks & SAITEK_RELEASE_MODE_MMO7 && size == 8) { /* M.M.O.7 uses bits 8, 22, 23 for the mode */ int mode = -1; if (raw_data[1] & 0x80) mode = 0; else if (raw_data[2] & 0x01) mode = 1; else if (raw_data[2] & 0x02) mode = 2; /* clear mode bits */ raw_data[1] &= ~0x80; raw_data[2] &= ~0x03; if (mode != ssc->mode) { hid_dbg(hdev, "entered mode %d\n", mode); if (ssc->mode != -1) { /* use bit 8 as the mode button, bits 22 * and 23 do not represent buttons * according to the HID report descriptor */ raw_data[1] |= 0x80; } ssc->mode = mode; } } return 0; } static int saitek_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { struct saitek_sc *ssc = hid_get_drvdata(hdev); struct input_dev *input = field->hidinput->input; if (usage->type == EV_KEY && value && (((ssc->quirks & SAITEK_RELEASE_MODE_RAT7) && usage->code - BTN_MOUSE == 10) || ((ssc->quirks & SAITEK_RELEASE_MODE_MMO7) && usage->code - BTN_MOUSE == 15))) { input_report_key(input, usage->code, 1); /* report missing release event */ input_report_key(input, usage->code, 0); return 1; } return 0; } static const struct hid_device_id saitek_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000), .driver_data = SAITEK_FIX_PS1000 }, { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_RAT5), .driver_data = SAITEK_RELEASE_MODE_RAT7 }, { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7_OLD), .driver_data = SAITEK_RELEASE_MODE_RAT7 }, { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7), .driver_data = SAITEK_RELEASE_MODE_RAT7 }, { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7_CONTAGION), .driver_data = SAITEK_RELEASE_MODE_RAT7 }, { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT9), .driver_data = SAITEK_RELEASE_MODE_RAT7 }, { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_RAT9), .driver_data = SAITEK_RELEASE_MODE_RAT7 }, { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_MMO7), .driver_data = SAITEK_RELEASE_MODE_MMO7 }, { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_MMO7), .driver_data = SAITEK_RELEASE_MODE_MMO7 }, { } }; MODULE_DEVICE_TABLE(hid, saitek_devices); static struct hid_driver saitek_driver = { .name = "saitek", .id_table = saitek_devices, .probe = saitek_probe, .report_fixup = saitek_report_fixup, .raw_event = saitek_raw_event, .event = saitek_event, }; module_hid_driver(saitek_driver); MODULE_LICENSE("GPL"); |