1 /* 2 * Force feedback support for SmartJoy PLUS PS2->USB adapter 3 * 4 * Copyright (c) 2009 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> 5 * 6 * Based of hid-pl.c and hid-gaff.c 7 * Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com> 8 * Copyright (c) 2008 Lukasz Lubojanski <lukasz@lubojanski.info> 9 */ 10 11 /* 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 */ 26 27 /* #define DEBUG */ 28 29 #include <linux/input.h> 30 #include <linux/usb.h> 31 #include <linux/hid.h> 32 #include "hid-ids.h" 33 34 #ifdef CONFIG_SMARTJOYPLUS_FF 35 #include "usbhid/usbhid.h" 36 37 struct sjoyff_device { 38 struct hid_report *report; 39 }; 40 41 static int hid_sjoyff_play(struct input_dev *dev, void *data, 42 struct ff_effect *effect) 43 { 44 struct hid_device *hid = input_get_drvdata(dev); 45 struct sjoyff_device *sjoyff = data; 46 u32 left, right; 47 48 left = effect->u.rumble.strong_magnitude; 49 right = effect->u.rumble.weak_magnitude; 50 dev_dbg(&dev->dev, "called with 0x%08x 0x%08x\n", left, right); 51 52 left = left * 0xff / 0xffff; 53 right = (right != 0); /* on/off only */ 54 55 sjoyff->report->field[0]->value[1] = right; 56 sjoyff->report->field[0]->value[2] = left; 57 dev_dbg(&dev->dev, "running with 0x%02x 0x%02x\n", left, right); 58 usbhid_submit_report(hid, sjoyff->report, USB_DIR_OUT); 59 60 return 0; 61 } 62 63 static int sjoyff_init(struct hid_device *hid) 64 { 65 struct sjoyff_device *sjoyff; 66 struct hid_report *report; 67 struct hid_input *hidinput = list_entry(hid->inputs.next, 68 struct hid_input, list); 69 struct list_head *report_list = 70 &hid->report_enum[HID_OUTPUT_REPORT].report_list; 71 struct list_head *report_ptr = report_list; 72 struct input_dev *dev; 73 int error; 74 75 if (list_empty(report_list)) { 76 dev_err(&hid->dev, "no output reports found\n"); 77 return -ENODEV; 78 } 79 80 report_ptr = report_ptr->next; 81 82 if (report_ptr == report_list) { 83 dev_err(&hid->dev, "required output report is " 84 "missing\n"); 85 return -ENODEV; 86 } 87 88 report = list_entry(report_ptr, struct hid_report, list); 89 if (report->maxfield < 1) { 90 dev_err(&hid->dev, "no fields in the report\n"); 91 return -ENODEV; 92 } 93 94 if (report->field[0]->report_count < 3) { 95 dev_err(&hid->dev, "not enough values in the field\n"); 96 return -ENODEV; 97 } 98 99 sjoyff = kzalloc(sizeof(struct sjoyff_device), GFP_KERNEL); 100 if (!sjoyff) 101 return -ENOMEM; 102 103 dev = hidinput->input; 104 105 set_bit(FF_RUMBLE, dev->ffbit); 106 107 error = input_ff_create_memless(dev, sjoyff, hid_sjoyff_play); 108 if (error) { 109 kfree(sjoyff); 110 return error; 111 } 112 113 sjoyff->report = report; 114 sjoyff->report->field[0]->value[0] = 0x01; 115 sjoyff->report->field[0]->value[1] = 0x00; 116 sjoyff->report->field[0]->value[2] = 0x00; 117 usbhid_submit_report(hid, sjoyff->report, USB_DIR_OUT); 118 119 dev_info(&hid->dev, 120 "Force feedback for SmartJoy PLUS PS2/USB adapter\n"); 121 122 return 0; 123 } 124 #else 125 static inline int sjoyff_init(struct hid_device *hid) 126 { 127 return 0; 128 } 129 #endif 130 131 static int sjoy_probe(struct hid_device *hdev, const struct hid_device_id *id) 132 { 133 int ret; 134 135 ret = hid_parse(hdev); 136 if (ret) { 137 dev_err(&hdev->dev, "parse failed\n"); 138 goto err; 139 } 140 141 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 142 if (ret) { 143 dev_err(&hdev->dev, "hw start failed\n"); 144 goto err; 145 } 146 147 sjoyff_init(hdev); 148 149 return 0; 150 err: 151 return ret; 152 } 153 154 static const struct hid_device_id sjoy_devices[] = { 155 { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) }, 156 { } 157 }; 158 MODULE_DEVICE_TABLE(hid, sjoy_devices); 159 160 static struct hid_driver sjoy_driver = { 161 .name = "smartjoyplus", 162 .id_table = sjoy_devices, 163 .probe = sjoy_probe, 164 }; 165 166 static int sjoy_init(void) 167 { 168 return hid_register_driver(&sjoy_driver); 169 } 170 171 static void sjoy_exit(void) 172 { 173 hid_unregister_driver(&sjoy_driver); 174 } 175 176 module_init(sjoy_init); 177 module_exit(sjoy_exit); 178 MODULE_LICENSE("GPL"); 179 MODULE_AUTHOR("Jussi Kivilinna"); 180 181