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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2000 Justin Cormack | |
3 | */ | |
4 | ||
5 | /* | |
6 | * Newton keyboard driver for Linux | |
7 | */ | |
8 | ||
9 | /* | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | * Should you need to contact me, the author, you can do so either by | |
25 | * e-mail - mail your message to <j.cormack@doc.ic.ac.uk>, or by paper mail: | |
26 | * Justin Cormack, 68 Dartmouth Park Road, London NW5 1SN, UK. | |
27 | */ | |
28 | ||
29 | #include <linux/slab.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/input.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/serio.h> | |
34 | ||
35 | #define DRIVER_DESC "Newton keyboard driver" | |
36 | ||
37 | MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>"); | |
38 | MODULE_DESCRIPTION(DRIVER_DESC); | |
39 | MODULE_LICENSE("GPL"); | |
40 | ||
41 | #define NKBD_KEY 0x7f | |
42 | #define NKBD_PRESS 0x80 | |
43 | ||
44 | static unsigned char nkbd_keycode[128] = { | |
45 | KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X, | |
46 | KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R, | |
47 | KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5, | |
48 | KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O, | |
49 | KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE, | |
50 | KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT, | |
51 | KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA, | |
52 | KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0, | |
53 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
54 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
55 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
56 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
57 | KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0 | |
58 | }; | |
59 | ||
1da177e4 LT |
60 | struct nkbd { |
61 | unsigned char keycode[128]; | |
3c42f0c3 | 62 | struct input_dev *dev; |
1da177e4 LT |
63 | struct serio *serio; |
64 | char phys[32]; | |
65 | }; | |
66 | ||
67 | static irqreturn_t nkbd_interrupt(struct serio *serio, | |
68 | unsigned char data, unsigned int flags, struct pt_regs *regs) | |
69 | { | |
70 | struct nkbd *nkbd = serio_get_drvdata(serio); | |
71 | ||
72 | /* invalid scan codes are probably the init sequence, so we ignore them */ | |
73 | if (nkbd->keycode[data & NKBD_KEY]) { | |
3c42f0c3 DT |
74 | input_regs(nkbd->dev, regs); |
75 | input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS); | |
76 | input_sync(nkbd->dev); | |
1da177e4 LT |
77 | } |
78 | ||
79 | else if (data == 0xe7) /* end of init sequence */ | |
3c42f0c3 | 80 | printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys); |
1da177e4 LT |
81 | return IRQ_HANDLED; |
82 | ||
83 | } | |
84 | ||
85 | static int nkbd_connect(struct serio *serio, struct serio_driver *drv) | |
86 | { | |
87 | struct nkbd *nkbd; | |
3c42f0c3 DT |
88 | struct input_dev *input_dev; |
89 | int err = -ENOMEM; | |
1da177e4 | 90 | int i; |
1da177e4 | 91 | |
3c42f0c3 DT |
92 | nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL); |
93 | input_dev = input_allocate_device(); | |
94 | if (!nkbd || !input_dev) | |
95 | goto fail; | |
1da177e4 LT |
96 | |
97 | nkbd->serio = serio; | |
3c42f0c3 | 98 | nkbd->dev = input_dev; |
ea08c6fa | 99 | snprintf(nkbd->phys, sizeof(nkbd->phys), "%s/input0", serio->phys); |
3c42f0c3 | 100 | memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode)); |
1da177e4 | 101 | |
3c42f0c3 DT |
102 | input_dev->name = "Newton Keyboard"; |
103 | input_dev->phys = nkbd->phys; | |
104 | input_dev->id.bustype = BUS_RS232; | |
105 | input_dev->id.vendor = SERIO_NEWTON; | |
106 | input_dev->id.product = 0x0001; | |
107 | input_dev->id.version = 0x0100; | |
108 | input_dev->cdev.dev = &serio->dev; | |
109 | input_dev->private = nkbd; | |
110 | ||
111 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); | |
112 | input_dev->keycode = nkbd->keycode; | |
113 | input_dev->keycodesize = sizeof(unsigned char); | |
114 | input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode); | |
115 | for (i = 0; i < 128; i++) | |
116 | set_bit(nkbd->keycode[i], input_dev->keybit); | |
117 | clear_bit(0, input_dev->keybit); | |
1da177e4 LT |
118 | |
119 | serio_set_drvdata(serio, nkbd); | |
120 | ||
121 | err = serio_open(serio, drv); | |
3c42f0c3 DT |
122 | if (err) |
123 | goto fail; | |
1da177e4 | 124 | |
3c42f0c3 | 125 | input_register_device(nkbd->dev); |
1da177e4 | 126 | return 0; |
3c42f0c3 DT |
127 | |
128 | fail: serio_set_drvdata(serio, NULL); | |
129 | input_free_device(input_dev); | |
130 | kfree(nkbd); | |
131 | return err; | |
1da177e4 LT |
132 | } |
133 | ||
134 | static void nkbd_disconnect(struct serio *serio) | |
135 | { | |
136 | struct nkbd *nkbd = serio_get_drvdata(serio); | |
137 | ||
1da177e4 LT |
138 | serio_close(serio); |
139 | serio_set_drvdata(serio, NULL); | |
3c42f0c3 | 140 | input_unregister_device(nkbd->dev); |
1da177e4 LT |
141 | kfree(nkbd); |
142 | } | |
143 | ||
144 | static struct serio_device_id nkbd_serio_ids[] = { | |
145 | { | |
146 | .type = SERIO_RS232, | |
147 | .proto = SERIO_NEWTON, | |
148 | .id = SERIO_ANY, | |
149 | .extra = SERIO_ANY, | |
150 | }, | |
151 | { 0 } | |
152 | }; | |
153 | ||
154 | MODULE_DEVICE_TABLE(serio, nkbd_serio_ids); | |
155 | ||
156 | static struct serio_driver nkbd_drv = { | |
157 | .driver = { | |
158 | .name = "newtonkbd", | |
159 | }, | |
160 | .description = DRIVER_DESC, | |
161 | .id_table = nkbd_serio_ids, | |
162 | .interrupt = nkbd_interrupt, | |
163 | .connect = nkbd_connect, | |
164 | .disconnect = nkbd_disconnect, | |
165 | }; | |
166 | ||
167 | static int __init nkbd_init(void) | |
168 | { | |
169 | serio_register_driver(&nkbd_drv); | |
170 | return 0; | |
171 | } | |
172 | ||
173 | static void __exit nkbd_exit(void) | |
174 | { | |
175 | serio_unregister_driver(&nkbd_drv); | |
176 | } | |
177 | ||
178 | module_init(nkbd_init); | |
179 | module_exit(nkbd_exit); |