]> git.karo-electronics.de Git - mv-sheeva.git/blob - drivers/hid/hid-sjoy.c
Merge branch 'fix/hda' into topic/hda
[mv-sheeva.git] / drivers / hid / hid-sjoy.c
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 __init sjoy_init(void)
167 {
168         return hid_register_driver(&sjoy_driver);
169 }
170
171 static void __exit 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