]>
Commit | Line | Data |
---|---|---|
1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
f35d0616 MV |
2 | /* |
3 | * Stowaway keyboard driver for Linux | |
4 | */ | |
5 | ||
6 | /* | |
7 | * Copyright (c) 2006 Marek Vasut | |
8 | * | |
9 | * Based on Newton keyboard driver for Linux | |
10 | * by Justin Cormack | |
11 | */ | |
12 | ||
13 | /* | |
f35d0616 MV |
14 | */ |
15 | ||
16 | #include <linux/slab.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/input.h> | |
f35d0616 MV |
19 | #include <linux/serio.h> |
20 | ||
21 | #define DRIVER_DESC "Stowaway keyboard driver" | |
22 | ||
23 | MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); | |
24 | MODULE_DESCRIPTION(DRIVER_DESC); | |
25 | MODULE_LICENSE("GPL"); | |
26 | ||
27 | #define SKBD_KEY_MASK 0x7f | |
28 | #define SKBD_RELEASE 0x80 | |
29 | ||
30 | static unsigned char skbd_keycode[128] = { | |
31 | KEY_1, KEY_2, KEY_3, KEY_Z, KEY_4, KEY_5, KEY_6, KEY_7, | |
32 | 0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_GRAVE, | |
33 | KEY_X, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_SPACE, | |
34 | KEY_CAPSLOCK, KEY_TAB, KEY_LEFTCTRL, 0, 0, 0, 0, 0, | |
35 | 0, 0, 0, KEY_LEFTALT, 0, 0, 0, 0, | |
36 | 0, 0, 0, 0, KEY_C, KEY_V, KEY_B, KEY_N, | |
37 | KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, KEY_HOME, KEY_8, KEY_9, KEY_0, KEY_ESC, | |
38 | KEY_LEFTBRACE, KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_END, KEY_U, KEY_I, KEY_O, KEY_P, | |
39 | KEY_APOSTROPHE, KEY_ENTER, KEY_PAGEUP,0, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON, | |
40 | KEY_SLASH, KEY_UP, KEY_PAGEDOWN, 0,KEY_M, KEY_COMMA, KEY_DOT, KEY_INSERT, | |
41 | KEY_DELETE, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, | |
42 | KEY_LEFTSHIFT, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, | |
43 | 0, 0, 0, 0, 0, 0, 0, 0, | |
44 | 0, 0, 0, 0, 0, 0, 0, 0, | |
45 | 0, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, | |
46 | KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, 0, 0, 0 | |
47 | }; | |
48 | ||
49 | struct skbd { | |
50 | unsigned char keycode[128]; | |
51 | struct input_dev *dev; | |
52 | struct serio *serio; | |
53 | char phys[32]; | |
54 | }; | |
55 | ||
56 | static irqreturn_t skbd_interrupt(struct serio *serio, unsigned char data, | |
7d12e780 | 57 | unsigned int flags) |
f35d0616 MV |
58 | { |
59 | struct skbd *skbd = serio_get_drvdata(serio); | |
60 | struct input_dev *dev = skbd->dev; | |
61 | ||
62 | if (skbd->keycode[data & SKBD_KEY_MASK]) { | |
f35d0616 MV |
63 | input_report_key(dev, skbd->keycode[data & SKBD_KEY_MASK], |
64 | !(data & SKBD_RELEASE)); | |
65 | input_sync(dev); | |
66 | } | |
67 | ||
68 | return IRQ_HANDLED; | |
69 | } | |
70 | ||
71 | static int skbd_connect(struct serio *serio, struct serio_driver *drv) | |
72 | { | |
73 | struct skbd *skbd; | |
74 | struct input_dev *input_dev; | |
75 | int err = -ENOMEM; | |
76 | int i; | |
77 | ||
78 | skbd = kzalloc(sizeof(struct skbd), GFP_KERNEL); | |
79 | input_dev = input_allocate_device(); | |
80 | if (!skbd || !input_dev) | |
81 | goto fail1; | |
82 | ||
83 | skbd->serio = serio; | |
84 | skbd->dev = input_dev; | |
85 | snprintf(skbd->phys, sizeof(skbd->phys), "%s/input0", serio->phys); | |
86 | memcpy(skbd->keycode, skbd_keycode, sizeof(skbd->keycode)); | |
87 | ||
88 | input_dev->name = "Stowaway Keyboard"; | |
89 | input_dev->phys = skbd->phys; | |
90 | input_dev->id.bustype = BUS_RS232; | |
91 | input_dev->id.vendor = SERIO_STOWAWAY; | |
92 | input_dev->id.product = 0x0001; | |
93 | input_dev->id.version = 0x0100; | |
469ba4df | 94 | input_dev->dev.parent = &serio->dev; |
f35d0616 | 95 | |
7b19ada2 | 96 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); |
f35d0616 MV |
97 | input_dev->keycode = skbd->keycode; |
98 | input_dev->keycodesize = sizeof(unsigned char); | |
99 | input_dev->keycodemax = ARRAY_SIZE(skbd_keycode); | |
100 | for (i = 0; i < ARRAY_SIZE(skbd_keycode); i++) | |
101 | set_bit(skbd_keycode[i], input_dev->keybit); | |
102 | clear_bit(0, input_dev->keybit); | |
103 | ||
104 | serio_set_drvdata(serio, skbd); | |
105 | ||
106 | err = serio_open(serio, drv); | |
107 | if (err) | |
108 | goto fail2; | |
109 | ||
110 | err = input_register_device(skbd->dev); | |
111 | if (err) | |
112 | goto fail3; | |
113 | ||
114 | return 0; | |
115 | ||
116 | fail3: serio_close(serio); | |
117 | fail2: serio_set_drvdata(serio, NULL); | |
118 | fail1: input_free_device(input_dev); | |
119 | kfree(skbd); | |
120 | return err; | |
121 | } | |
122 | ||
123 | static void skbd_disconnect(struct serio *serio) | |
124 | { | |
125 | struct skbd *skbd = serio_get_drvdata(serio); | |
126 | ||
127 | serio_close(serio); | |
128 | serio_set_drvdata(serio, NULL); | |
129 | input_unregister_device(skbd->dev); | |
130 | kfree(skbd); | |
131 | } | |
132 | ||
1fa80217 | 133 | static const struct serio_device_id skbd_serio_ids[] = { |
f35d0616 MV |
134 | { |
135 | .type = SERIO_RS232, | |
136 | .proto = SERIO_STOWAWAY, | |
137 | .id = SERIO_ANY, | |
138 | .extra = SERIO_ANY, | |
139 | }, | |
140 | { 0 } | |
141 | }; | |
142 | ||
143 | MODULE_DEVICE_TABLE(serio, skbd_serio_ids); | |
144 | ||
145 | static struct serio_driver skbd_drv = { | |
146 | .driver = { | |
147 | .name = "stowaway", | |
148 | }, | |
149 | .description = DRIVER_DESC, | |
150 | .id_table = skbd_serio_ids, | |
151 | .interrupt = skbd_interrupt, | |
152 | .connect = skbd_connect, | |
153 | .disconnect = skbd_disconnect, | |
154 | }; | |
155 | ||
65ac9f7a | 156 | module_serio_driver(skbd_drv); |