Commit | Line | Data |
---|---|---|
e8fc9828 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | * Copyright (c) 1999-2001 Vojtech Pavlik |
4 | */ | |
5 | ||
6 | /* | |
7 | * Logitech WingMan Warrior joystick driver for Linux | |
8 | */ | |
9 | ||
1da177e4 LT |
10 | #include <linux/kernel.h> |
11 | #include <linux/module.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/input.h> | |
14 | #include <linux/serio.h> | |
1da177e4 LT |
15 | |
16 | #define DRIVER_DESC "Logitech WingMan Warrior joystick driver" | |
17 | ||
18 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
19 | MODULE_DESCRIPTION(DRIVER_DESC); | |
20 | MODULE_LICENSE("GPL"); | |
21 | ||
22 | /* | |
23 | * Constants. | |
24 | */ | |
25 | ||
26 | #define WARRIOR_MAX_LENGTH 16 | |
27 | static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 }; | |
1da177e4 LT |
28 | |
29 | /* | |
30 | * Per-Warrior data. | |
31 | */ | |
32 | ||
33 | struct warrior { | |
17dd3f0f | 34 | struct input_dev *dev; |
1da177e4 LT |
35 | int idx, len; |
36 | unsigned char data[WARRIOR_MAX_LENGTH]; | |
37 | char phys[32]; | |
38 | }; | |
39 | ||
40 | /* | |
41 | * warrior_process_packet() decodes packets the driver receives from the | |
42 | * Warrior. It updates the data accordingly. | |
43 | */ | |
44 | ||
7d12e780 | 45 | static void warrior_process_packet(struct warrior *warrior) |
1da177e4 | 46 | { |
17dd3f0f | 47 | struct input_dev *dev = warrior->dev; |
1da177e4 LT |
48 | unsigned char *data = warrior->data; |
49 | ||
50 | if (!warrior->idx) return; | |
51 | ||
1da177e4 LT |
52 | switch ((data[0] >> 4) & 7) { |
53 | case 1: /* Button data */ | |
54 | input_report_key(dev, BTN_TRIGGER, data[3] & 1); | |
55 | input_report_key(dev, BTN_THUMB, (data[3] >> 1) & 1); | |
56 | input_report_key(dev, BTN_TOP, (data[3] >> 2) & 1); | |
57 | input_report_key(dev, BTN_TOP2, (data[3] >> 3) & 1); | |
58 | break; | |
59 | case 3: /* XY-axis info->data */ | |
60 | input_report_abs(dev, ABS_X, ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5))); | |
61 | input_report_abs(dev, ABS_Y, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7)); | |
62 | break; | |
63 | case 5: /* Throttle, spinner, hat info->data */ | |
64 | input_report_abs(dev, ABS_THROTTLE, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7)); | |
65 | input_report_abs(dev, ABS_HAT0X, (data[3] & 2 ? 1 : 0) - (data[3] & 1 ? 1 : 0)); | |
66 | input_report_abs(dev, ABS_HAT0Y, (data[3] & 8 ? 1 : 0) - (data[3] & 4 ? 1 : 0)); | |
67 | input_report_rel(dev, REL_DIAL, (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5)); | |
68 | break; | |
69 | } | |
70 | input_sync(dev); | |
71 | } | |
72 | ||
73 | /* | |
74 | * warrior_interrupt() is called by the low level driver when characters | |
75 | * are ready for us. We then buffer them for further processing, or call the | |
76 | * packet processing routine. | |
77 | */ | |
78 | ||
79 | static irqreturn_t warrior_interrupt(struct serio *serio, | |
7d12e780 | 80 | unsigned char data, unsigned int flags) |
1da177e4 LT |
81 | { |
82 | struct warrior *warrior = serio_get_drvdata(serio); | |
83 | ||
84 | if (data & 0x80) { | |
7d12e780 | 85 | if (warrior->idx) warrior_process_packet(warrior); |
1da177e4 LT |
86 | warrior->idx = 0; |
87 | warrior->len = warrior_lengths[(data >> 4) & 7]; | |
88 | } | |
89 | ||
90 | if (warrior->idx < warrior->len) | |
91 | warrior->data[warrior->idx++] = data; | |
92 | ||
93 | if (warrior->idx == warrior->len) { | |
7d12e780 | 94 | if (warrior->idx) warrior_process_packet(warrior); |
1da177e4 LT |
95 | warrior->idx = 0; |
96 | warrior->len = 0; | |
97 | } | |
98 | return IRQ_HANDLED; | |
99 | } | |
100 | ||
101 | /* | |
102 | * warrior_disconnect() is the opposite of warrior_connect() | |
103 | */ | |
104 | ||
105 | static void warrior_disconnect(struct serio *serio) | |
106 | { | |
107 | struct warrior *warrior = serio_get_drvdata(serio); | |
108 | ||
1da177e4 LT |
109 | serio_close(serio); |
110 | serio_set_drvdata(serio, NULL); | |
17dd3f0f | 111 | input_unregister_device(warrior->dev); |
1da177e4 LT |
112 | kfree(warrior); |
113 | } | |
114 | ||
115 | /* | |
116 | * warrior_connect() is the routine that is called when someone adds a | |
117 | * new serio device. It looks for the Warrior, and if found, registers | |
118 | * it as an input device. | |
119 | */ | |
120 | ||
121 | static int warrior_connect(struct serio *serio, struct serio_driver *drv) | |
122 | { | |
123 | struct warrior *warrior; | |
17dd3f0f DT |
124 | struct input_dev *input_dev; |
125 | int err = -ENOMEM; | |
1da177e4 | 126 | |
17dd3f0f DT |
127 | warrior = kzalloc(sizeof(struct warrior), GFP_KERNEL); |
128 | input_dev = input_allocate_device(); | |
129 | if (!warrior || !input_dev) | |
127278ce | 130 | goto fail1; |
1da177e4 | 131 | |
17dd3f0f | 132 | warrior->dev = input_dev; |
10ca4c0a | 133 | snprintf(warrior->phys, sizeof(warrior->phys), "%s/input0", serio->phys); |
1da177e4 | 134 | |
17dd3f0f DT |
135 | input_dev->name = "Logitech WingMan Warrior"; |
136 | input_dev->phys = warrior->phys; | |
137 | input_dev->id.bustype = BUS_RS232; | |
138 | input_dev->id.vendor = SERIO_WARRIOR; | |
139 | input_dev->id.product = 0x0001; | |
140 | input_dev->id.version = 0x0100; | |
935e658e | 141 | input_dev->dev.parent = &serio->dev; |
17dd3f0f | 142 | |
7b19ada2 JS |
143 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) | |
144 | BIT_MASK(EV_ABS); | |
145 | input_dev->keybit[BIT_WORD(BTN_TRIGGER)] = BIT_MASK(BTN_TRIGGER) | | |
146 | BIT_MASK(BTN_THUMB) | BIT_MASK(BTN_TOP) | BIT_MASK(BTN_TOP2); | |
147 | input_dev->relbit[0] = BIT_MASK(REL_DIAL); | |
17dd3f0f DT |
148 | input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 8); |
149 | input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 8); | |
150 | input_set_abs_params(input_dev, ABS_THROTTLE, -112, 112, 0, 0); | |
151 | input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0); | |
ae5536d6 | 152 | input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0); |
1da177e4 LT |
153 | |
154 | serio_set_drvdata(serio, warrior); | |
155 | ||
156 | err = serio_open(serio, drv); | |
17dd3f0f | 157 | if (err) |
127278ce DT |
158 | goto fail2; |
159 | ||
160 | err = input_register_device(warrior->dev); | |
161 | if (err) | |
162 | goto fail3; | |
1da177e4 LT |
163 | |
164 | return 0; | |
17dd3f0f | 165 | |
127278ce DT |
166 | fail3: serio_close(serio); |
167 | fail2: serio_set_drvdata(serio, NULL); | |
168 | fail1: input_free_device(input_dev); | |
17dd3f0f DT |
169 | kfree(warrior); |
170 | return err; | |
1da177e4 LT |
171 | } |
172 | ||
173 | /* | |
174 | * The serio driver structure. | |
175 | */ | |
176 | ||
bee186de | 177 | static const struct serio_device_id warrior_serio_ids[] = { |
1da177e4 LT |
178 | { |
179 | .type = SERIO_RS232, | |
180 | .proto = SERIO_WARRIOR, | |
181 | .id = SERIO_ANY, | |
182 | .extra = SERIO_ANY, | |
183 | }, | |
184 | { 0 } | |
185 | }; | |
186 | ||
187 | MODULE_DEVICE_TABLE(serio, warrior_serio_ids); | |
188 | ||
189 | static struct serio_driver warrior_drv = { | |
190 | .driver = { | |
191 | .name = "warrior", | |
192 | }, | |
193 | .description = DRIVER_DESC, | |
194 | .id_table = warrior_serio_ids, | |
195 | .interrupt = warrior_interrupt, | |
196 | .connect = warrior_connect, | |
197 | .disconnect = warrior_disconnect, | |
198 | }; | |
199 | ||
65ac9f7a | 200 | module_serio_driver(warrior_drv); |