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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> | |
1da177e4 LT |
32 | #include <linux/serio.h> |
33 | ||
34 | #define DRIVER_DESC "Newton keyboard driver" | |
35 | ||
36 | MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>"); | |
37 | MODULE_DESCRIPTION(DRIVER_DESC); | |
38 | MODULE_LICENSE("GPL"); | |
39 | ||
40 | #define NKBD_KEY 0x7f | |
41 | #define NKBD_PRESS 0x80 | |
42 | ||
43 | static unsigned char nkbd_keycode[128] = { | |
44 | KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X, | |
45 | KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R, | |
46 | KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5, | |
47 | KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O, | |
48 | KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE, | |
49 | KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT, | |
50 | KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA, | |
51 | KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0, | |
52 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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, | |
56 | KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0 | |
57 | }; | |
58 | ||
1da177e4 LT |
59 | struct nkbd { |
60 | unsigned char keycode[128]; | |
3c42f0c3 | 61 | struct input_dev *dev; |
1da177e4 LT |
62 | struct serio *serio; |
63 | char phys[32]; | |
64 | }; | |
65 | ||
66 | static irqreturn_t nkbd_interrupt(struct serio *serio, | |
7d12e780 | 67 | unsigned char data, unsigned int flags) |
1da177e4 LT |
68 | { |
69 | struct nkbd *nkbd = serio_get_drvdata(serio); | |
70 | ||
71 | /* invalid scan codes are probably the init sequence, so we ignore them */ | |
72 | if (nkbd->keycode[data & NKBD_KEY]) { | |
3c42f0c3 DT |
73 | input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS); |
74 | input_sync(nkbd->dev); | |
1da177e4 LT |
75 | } |
76 | ||
77 | else if (data == 0xe7) /* end of init sequence */ | |
3c42f0c3 | 78 | printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys); |
1da177e4 LT |
79 | return IRQ_HANDLED; |
80 | ||
81 | } | |
82 | ||
83 | static int nkbd_connect(struct serio *serio, struct serio_driver *drv) | |
84 | { | |
85 | struct nkbd *nkbd; | |
3c42f0c3 DT |
86 | struct input_dev *input_dev; |
87 | int err = -ENOMEM; | |
1da177e4 | 88 | int i; |
1da177e4 | 89 | |
3c42f0c3 DT |
90 | nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL); |
91 | input_dev = input_allocate_device(); | |
92 | if (!nkbd || !input_dev) | |
2b03b60e | 93 | goto fail1; |
1da177e4 LT |
94 | |
95 | nkbd->serio = serio; | |
3c42f0c3 | 96 | nkbd->dev = input_dev; |
ea08c6fa | 97 | snprintf(nkbd->phys, sizeof(nkbd->phys), "%s/input0", serio->phys); |
3c42f0c3 | 98 | memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode)); |
1da177e4 | 99 | |
3c42f0c3 DT |
100 | input_dev->name = "Newton Keyboard"; |
101 | input_dev->phys = nkbd->phys; | |
102 | input_dev->id.bustype = BUS_RS232; | |
103 | input_dev->id.vendor = SERIO_NEWTON; | |
104 | input_dev->id.product = 0x0001; | |
105 | input_dev->id.version = 0x0100; | |
469ba4df | 106 | input_dev->dev.parent = &serio->dev; |
3c42f0c3 | 107 | |
7b19ada2 | 108 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); |
3c42f0c3 DT |
109 | input_dev->keycode = nkbd->keycode; |
110 | input_dev->keycodesize = sizeof(unsigned char); | |
111 | input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode); | |
112 | for (i = 0; i < 128; i++) | |
113 | set_bit(nkbd->keycode[i], input_dev->keybit); | |
114 | clear_bit(0, input_dev->keybit); | |
1da177e4 LT |
115 | |
116 | serio_set_drvdata(serio, nkbd); | |
117 | ||
118 | err = serio_open(serio, drv); | |
3c42f0c3 | 119 | if (err) |
2b03b60e DT |
120 | goto fail2; |
121 | ||
122 | err = input_register_device(nkbd->dev); | |
123 | if (err) | |
124 | goto fail3; | |
1da177e4 LT |
125 | |
126 | return 0; | |
3c42f0c3 | 127 | |
2b03b60e DT |
128 | fail3: serio_close(serio); |
129 | fail2: serio_set_drvdata(serio, NULL); | |
130 | fail1: input_free_device(input_dev); | |
3c42f0c3 DT |
131 | kfree(nkbd); |
132 | return err; | |
1da177e4 LT |
133 | } |
134 | ||
135 | static void nkbd_disconnect(struct serio *serio) | |
136 | { | |
137 | struct nkbd *nkbd = serio_get_drvdata(serio); | |
138 | ||
1da177e4 LT |
139 | serio_close(serio); |
140 | serio_set_drvdata(serio, NULL); | |
3c42f0c3 | 141 | input_unregister_device(nkbd->dev); |
1da177e4 LT |
142 | kfree(nkbd); |
143 | } | |
144 | ||
145 | static struct serio_device_id nkbd_serio_ids[] = { | |
146 | { | |
147 | .type = SERIO_RS232, | |
148 | .proto = SERIO_NEWTON, | |
149 | .id = SERIO_ANY, | |
150 | .extra = SERIO_ANY, | |
151 | }, | |
152 | { 0 } | |
153 | }; | |
154 | ||
155 | MODULE_DEVICE_TABLE(serio, nkbd_serio_ids); | |
156 | ||
157 | static struct serio_driver nkbd_drv = { | |
158 | .driver = { | |
159 | .name = "newtonkbd", | |
160 | }, | |
161 | .description = DRIVER_DESC, | |
162 | .id_table = nkbd_serio_ids, | |
163 | .interrupt = nkbd_interrupt, | |
164 | .connect = nkbd_connect, | |
165 | .disconnect = nkbd_disconnect, | |
166 | }; | |
167 | ||
65ac9f7a | 168 | module_serio_driver(nkbd_drv); |