Commit | Line | Data |
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f35d0616 MV |
1 | /* |
2 | * Stowaway keyboard driver for Linux | |
3 | */ | |
4 | ||
5 | /* | |
6 | * Copyright (c) 2006 Marek Vasut | |
7 | * | |
8 | * Based on Newton keyboard driver for Linux | |
9 | * by Justin Cormack | |
10 | */ | |
11 | ||
12 | /* | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
26 | * | |
27 | * Should you need to contact me, the author, you can do so either by | |
28 | * e-mail - mail your message to <marek.vasut@gmail.com>, or by paper mail: | |
29 | * Marek Vasut, Liskovecka 559, Frydek-Mistek, 738 01 Czech Republic | |
30 | */ | |
31 | ||
32 | #include <linux/slab.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/input.h> | |
f35d0616 MV |
35 | #include <linux/serio.h> |
36 | ||
37 | #define DRIVER_DESC "Stowaway keyboard driver" | |
38 | ||
39 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); | |
40 | MODULE_DESCRIPTION(DRIVER_DESC); | |
41 | MODULE_LICENSE("GPL"); | |
42 | ||
43 | #define SKBD_KEY_MASK 0x7f | |
44 | #define SKBD_RELEASE 0x80 | |
45 | ||
46 | static unsigned char skbd_keycode[128] = { | |
47 | KEY_1, KEY_2, KEY_3, KEY_Z, KEY_4, KEY_5, KEY_6, KEY_7, | |
48 | 0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_GRAVE, | |
49 | KEY_X, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_SPACE, | |
50 | KEY_CAPSLOCK, KEY_TAB, KEY_LEFTCTRL, 0, 0, 0, 0, 0, | |
51 | 0, 0, 0, KEY_LEFTALT, 0, 0, 0, 0, | |
52 | 0, 0, 0, 0, KEY_C, KEY_V, KEY_B, KEY_N, | |
53 | KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, KEY_HOME, KEY_8, KEY_9, KEY_0, KEY_ESC, | |
54 | KEY_LEFTBRACE, KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_END, KEY_U, KEY_I, KEY_O, KEY_P, | |
55 | KEY_APOSTROPHE, KEY_ENTER, KEY_PAGEUP,0, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON, | |
56 | KEY_SLASH, KEY_UP, KEY_PAGEDOWN, 0,KEY_M, KEY_COMMA, KEY_DOT, KEY_INSERT, | |
57 | KEY_DELETE, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, | |
58 | KEY_LEFTSHIFT, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, | |
59 | 0, 0, 0, 0, 0, 0, 0, 0, | |
60 | 0, 0, 0, 0, 0, 0, 0, 0, | |
61 | 0, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, | |
62 | KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, 0, 0, 0 | |
63 | }; | |
64 | ||
65 | struct skbd { | |
66 | unsigned char keycode[128]; | |
67 | struct input_dev *dev; | |
68 | struct serio *serio; | |
69 | char phys[32]; | |
70 | }; | |
71 | ||
72 | static irqreturn_t skbd_interrupt(struct serio *serio, unsigned char data, | |
7d12e780 | 73 | unsigned int flags) |
f35d0616 MV |
74 | { |
75 | struct skbd *skbd = serio_get_drvdata(serio); | |
76 | struct input_dev *dev = skbd->dev; | |
77 | ||
78 | if (skbd->keycode[data & SKBD_KEY_MASK]) { | |
f35d0616 MV |
79 | input_report_key(dev, skbd->keycode[data & SKBD_KEY_MASK], |
80 | !(data & SKBD_RELEASE)); | |
81 | input_sync(dev); | |
82 | } | |
83 | ||
84 | return IRQ_HANDLED; | |
85 | } | |
86 | ||
87 | static int skbd_connect(struct serio *serio, struct serio_driver *drv) | |
88 | { | |
89 | struct skbd *skbd; | |
90 | struct input_dev *input_dev; | |
91 | int err = -ENOMEM; | |
92 | int i; | |
93 | ||
94 | skbd = kzalloc(sizeof(struct skbd), GFP_KERNEL); | |
95 | input_dev = input_allocate_device(); | |
96 | if (!skbd || !input_dev) | |
97 | goto fail1; | |
98 | ||
99 | skbd->serio = serio; | |
100 | skbd->dev = input_dev; | |
101 | snprintf(skbd->phys, sizeof(skbd->phys), "%s/input0", serio->phys); | |
102 | memcpy(skbd->keycode, skbd_keycode, sizeof(skbd->keycode)); | |
103 | ||
104 | input_dev->name = "Stowaway Keyboard"; | |
105 | input_dev->phys = skbd->phys; | |
106 | input_dev->id.bustype = BUS_RS232; | |
107 | input_dev->id.vendor = SERIO_STOWAWAY; | |
108 | input_dev->id.product = 0x0001; | |
109 | input_dev->id.version = 0x0100; | |
469ba4df | 110 | input_dev->dev.parent = &serio->dev; |
f35d0616 | 111 | |
7b19ada2 | 112 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); |
f35d0616 MV |
113 | input_dev->keycode = skbd->keycode; |
114 | input_dev->keycodesize = sizeof(unsigned char); | |
115 | input_dev->keycodemax = ARRAY_SIZE(skbd_keycode); | |
116 | for (i = 0; i < ARRAY_SIZE(skbd_keycode); i++) | |
117 | set_bit(skbd_keycode[i], input_dev->keybit); | |
118 | clear_bit(0, input_dev->keybit); | |
119 | ||
120 | serio_set_drvdata(serio, skbd); | |
121 | ||
122 | err = serio_open(serio, drv); | |
123 | if (err) | |
124 | goto fail2; | |
125 | ||
126 | err = input_register_device(skbd->dev); | |
127 | if (err) | |
128 | goto fail3; | |
129 | ||
130 | return 0; | |
131 | ||
132 | fail3: serio_close(serio); | |
133 | fail2: serio_set_drvdata(serio, NULL); | |
134 | fail1: input_free_device(input_dev); | |
135 | kfree(skbd); | |
136 | return err; | |
137 | } | |
138 | ||
139 | static void skbd_disconnect(struct serio *serio) | |
140 | { | |
141 | struct skbd *skbd = serio_get_drvdata(serio); | |
142 | ||
143 | serio_close(serio); | |
144 | serio_set_drvdata(serio, NULL); | |
145 | input_unregister_device(skbd->dev); | |
146 | kfree(skbd); | |
147 | } | |
148 | ||
149 | static struct serio_device_id skbd_serio_ids[] = { | |
150 | { | |
151 | .type = SERIO_RS232, | |
152 | .proto = SERIO_STOWAWAY, | |
153 | .id = SERIO_ANY, | |
154 | .extra = SERIO_ANY, | |
155 | }, | |
156 | { 0 } | |
157 | }; | |
158 | ||
159 | MODULE_DEVICE_TABLE(serio, skbd_serio_ids); | |
160 | ||
161 | static struct serio_driver skbd_drv = { | |
162 | .driver = { | |
163 | .name = "stowaway", | |
164 | }, | |
165 | .description = DRIVER_DESC, | |
166 | .id_table = skbd_serio_ids, | |
167 | .interrupt = skbd_interrupt, | |
168 | .connect = skbd_connect, | |
169 | .disconnect = skbd_disconnect, | |
170 | }; | |
171 | ||
65ac9f7a | 172 | module_serio_driver(skbd_drv); |