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| 1 | /* |
| 2 | * Force feedback support for Zeroplus based devices |
| 3 | * |
| 4 | * Copyright (c) 2005, 2006 Anssi Hannula <anssi.hannula@gmail.com> |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | |
| 24 | #include <linux/hid.h> |
| 25 | #include <linux/input.h> |
| 26 | #include <linux/slab.h> |
| 27 | #include <linux/usb.h> |
| 28 | #include <linux/module.h> |
| 29 | |
| 30 | #include "hid-ids.h" |
| 31 | |
| 32 | #ifdef CONFIG_ZEROPLUS_FF |
| 33 | #include "usbhid/usbhid.h" |
| 34 | |
| 35 | struct zpff_device { |
| 36 | struct hid_report *report; |
| 37 | }; |
| 38 | |
| 39 | static int zpff_play(struct input_dev *dev, void *data, |
| 40 | struct ff_effect *effect) |
| 41 | { |
| 42 | struct hid_device *hid = input_get_drvdata(dev); |
| 43 | struct zpff_device *zpff = data; |
| 44 | int left, right; |
| 45 | |
| 46 | /* |
| 47 | * The following is specified the other way around in the Zeroplus |
| 48 | * datasheet but the order below is correct for the XFX Executioner; |
| 49 | * however it is possible that the XFX Executioner is an exception |
| 50 | */ |
| 51 | |
| 52 | left = effect->u.rumble.strong_magnitude; |
| 53 | right = effect->u.rumble.weak_magnitude; |
| 54 | dbg_hid("called with 0x%04x 0x%04x\n", left, right); |
| 55 | |
| 56 | left = left * 0x7f / 0xffff; |
| 57 | right = right * 0x7f / 0xffff; |
| 58 | |
| 59 | zpff->report->field[2]->value[0] = left; |
| 60 | zpff->report->field[3]->value[0] = right; |
| 61 | dbg_hid("running with 0x%02x 0x%02x\n", left, right); |
| 62 | usbhid_submit_report(hid, zpff->report, USB_DIR_OUT); |
| 63 | |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | static int zpff_init(struct hid_device *hid) |
| 68 | { |
| 69 | struct zpff_device *zpff; |
| 70 | struct hid_report *report; |
| 71 | struct hid_input *hidinput = list_entry(hid->inputs.next, |
| 72 | struct hid_input, list); |
| 73 | struct list_head *report_list = |
| 74 | &hid->report_enum[HID_OUTPUT_REPORT].report_list; |
| 75 | struct input_dev *dev = hidinput->input; |
| 76 | int error; |
| 77 | |
| 78 | if (list_empty(report_list)) { |
| 79 | hid_err(hid, "no output report found\n"); |
| 80 | return -ENODEV; |
| 81 | } |
| 82 | |
| 83 | report = list_entry(report_list->next, struct hid_report, list); |
| 84 | |
| 85 | if (report->maxfield < 4) { |
| 86 | hid_err(hid, "not enough fields in report\n"); |
| 87 | return -ENODEV; |
| 88 | } |
| 89 | |
| 90 | zpff = kzalloc(sizeof(struct zpff_device), GFP_KERNEL); |
| 91 | if (!zpff) |
| 92 | return -ENOMEM; |
| 93 | |
| 94 | set_bit(FF_RUMBLE, dev->ffbit); |
| 95 | |
| 96 | error = input_ff_create_memless(dev, zpff, zpff_play); |
| 97 | if (error) { |
| 98 | kfree(zpff); |
| 99 | return error; |
| 100 | } |
| 101 | |
| 102 | zpff->report = report; |
| 103 | zpff->report->field[0]->value[0] = 0x00; |
| 104 | zpff->report->field[1]->value[0] = 0x02; |
| 105 | zpff->report->field[2]->value[0] = 0x00; |
| 106 | zpff->report->field[3]->value[0] = 0x00; |
| 107 | usbhid_submit_report(hid, zpff->report, USB_DIR_OUT); |
| 108 | |
| 109 | hid_info(hid, "force feedback for Zeroplus based devices by Anssi Hannula <anssi.hannula@gmail.com>\n"); |
| 110 | |
| 111 | return 0; |
| 112 | } |
| 113 | #else |
| 114 | static inline int zpff_init(struct hid_device *hid) |
| 115 | { |
| 116 | return 0; |
| 117 | } |
| 118 | #endif |
| 119 | |
| 120 | static int zp_probe(struct hid_device *hdev, const struct hid_device_id *id) |
| 121 | { |
| 122 | int ret; |
| 123 | |
| 124 | ret = hid_parse(hdev); |
| 125 | if (ret) { |
| 126 | hid_err(hdev, "parse failed\n"); |
| 127 | goto err; |
| 128 | } |
| 129 | |
| 130 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); |
| 131 | if (ret) { |
| 132 | hid_err(hdev, "hw start failed\n"); |
| 133 | goto err; |
| 134 | } |
| 135 | |
| 136 | zpff_init(hdev); |
| 137 | |
| 138 | return 0; |
| 139 | err: |
| 140 | return ret; |
| 141 | } |
| 142 | |
| 143 | static const struct hid_device_id zp_devices[] = { |
| 144 | { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) }, |
| 145 | { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) }, |
| 146 | { } |
| 147 | }; |
| 148 | MODULE_DEVICE_TABLE(hid, zp_devices); |
| 149 | |
| 150 | static struct hid_driver zp_driver = { |
| 151 | .name = "zeroplus", |
| 152 | .id_table = zp_devices, |
| 153 | .probe = zp_probe, |
| 154 | }; |
| 155 | |
| 156 | static int __init zp_init(void) |
| 157 | { |
| 158 | return hid_register_driver(&zp_driver); |
| 159 | } |
| 160 | |
| 161 | static void __exit zp_exit(void) |
| 162 | { |
| 163 | hid_unregister_driver(&zp_driver); |
| 164 | } |
| 165 | |
| 166 | module_init(zp_init); |
| 167 | module_exit(zp_exit); |
| 168 | MODULE_LICENSE("GPL"); |
| 169 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9
