Blame view
drivers/hid/hid-emsff.c
3.99 KB
04561c5aa HID: Add Force Fe... |
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 |
/* * Force feedback support for EMS Trio Linker Plus II * * Copyright (c) 2010 Ignaz Forster <ignaz.forster@gmx.de> */ /* * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/hid.h> #include <linux/input.h> #include <linux/usb.h> |
8f86a2c3c hid: Add module.h... |
27 |
#include <linux/module.h> |
04561c5aa HID: Add Force Fe... |
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 |
#include "hid-ids.h" #include "usbhid/usbhid.h" struct emsff_device { struct hid_report *report; }; static int emsff_play(struct input_dev *dev, void *data, struct ff_effect *effect) { struct hid_device *hid = input_get_drvdata(dev); struct emsff_device *emsff = data; int weak, strong; weak = effect->u.rumble.weak_magnitude; strong = effect->u.rumble.strong_magnitude; dbg_hid("called with 0x%04x 0x%04x ", strong, weak); weak = weak * 0xff / 0xffff; strong = strong * 0xff / 0xffff; emsff->report->field[0]->value[1] = weak; emsff->report->field[0]->value[2] = strong; dbg_hid("running with 0x%02x 0x%02x ", strong, weak); usbhid_submit_report(hid, emsff->report, USB_DIR_OUT); return 0; } static int emsff_init(struct hid_device *hid) { struct emsff_device *emsff; struct hid_report *report; struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list); struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; struct input_dev *dev = hidinput->input; int error; if (list_empty(report_list)) { |
4291ee305 HID: Add and use ... |
74 75 |
hid_err(hid, "no output reports found "); |
04561c5aa HID: Add Force Fe... |
76 77 78 79 80 |
return -ENODEV; } report = list_first_entry(report_list, struct hid_report, list); if (report->maxfield < 1) { |
4291ee305 HID: Add and use ... |
81 82 |
hid_err(hid, "no fields in the report "); |
04561c5aa HID: Add Force Fe... |
83 84 85 86 |
return -ENODEV; } if (report->field[0]->report_count < 7) { |
4291ee305 HID: Add and use ... |
87 88 |
hid_err(hid, "not enough values in the field "); |
04561c5aa HID: Add Force Fe... |
89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 |
return -ENODEV; } emsff = kzalloc(sizeof(struct emsff_device), GFP_KERNEL); if (!emsff) return -ENOMEM; set_bit(FF_RUMBLE, dev->ffbit); error = input_ff_create_memless(dev, emsff, emsff_play); if (error) { kfree(emsff); return error; } emsff->report = report; emsff->report->field[0]->value[0] = 0x01; emsff->report->field[0]->value[1] = 0x00; emsff->report->field[0]->value[2] = 0x00; emsff->report->field[0]->value[3] = 0x00; emsff->report->field[0]->value[4] = 0x00; emsff->report->field[0]->value[5] = 0x00; emsff->report->field[0]->value[6] = 0x00; usbhid_submit_report(hid, emsff->report, USB_DIR_OUT); |
4291ee305 HID: Add and use ... |
113 114 |
hid_info(hid, "force feedback for EMS based devices by Ignaz Forster <ignaz.forster@gmx.de> "); |
04561c5aa HID: Add Force Fe... |
115 116 117 118 119 120 121 122 123 124 |
return 0; } static int ems_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; ret = hid_parse(hdev); if (ret) { |
4291ee305 HID: Add and use ... |
125 126 |
hid_err(hdev, "parse failed "); |
04561c5aa HID: Add Force Fe... |
127 128 129 130 131 |
goto err; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); if (ret) { |
4291ee305 HID: Add and use ... |
132 133 |
hid_err(hdev, "hw start failed "); |
04561c5aa HID: Add Force Fe... |
134 135 |
goto err; } |
2dcd9543a HID: emsff: prope... |
136 137 138 139 140 141 142 |
ret = emsff_init(hdev); if (ret) { dev_err(&hdev->dev, "force feedback init failed "); hid_hw_stop(hdev); goto err; } |
04561c5aa HID: Add Force Fe... |
143 144 145 146 147 148 149 |
return 0; err: return ret; } static const struct hid_device_id ems_devices[] = { |
05ee28387 HID: emsff: use s... |
150 |
{ HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) }, |
04561c5aa HID: Add Force Fe... |
151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 |
{ } }; MODULE_DEVICE_TABLE(hid, ems_devices); static struct hid_driver ems_driver = { .name = "hkems", .id_table = ems_devices, .probe = ems_probe, }; static int ems_init(void) { return hid_register_driver(&ems_driver); } static void ems_exit(void) { hid_unregister_driver(&ems_driver); } module_init(ems_init); module_exit(ems_exit); MODULE_LICENSE("GPL"); |