Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * $Id: sunkbd.c,v 1.14 2001/09/25 10:12:07 vojtech Exp $ | |
3 | * | |
4 | * Copyright (c) 1999-2001 Vojtech Pavlik | |
5 | */ | |
6 | ||
7 | /* | |
8 | * Sun keyboard driver for Linux | |
9 | */ | |
10 | ||
11 | /* | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | * | |
26 | * Should you need to contact me, the author, you can do so either by | |
27 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: | |
28 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |
29 | */ | |
30 | ||
31 | #include <linux/delay.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/interrupt.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/input.h> | |
37 | #include <linux/serio.h> | |
38 | #include <linux/workqueue.h> | |
39 | ||
40 | #define DRIVER_DESC "Sun keyboard driver" | |
41 | ||
42 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
43 | MODULE_DESCRIPTION(DRIVER_DESC); | |
44 | MODULE_LICENSE("GPL"); | |
45 | ||
46 | static unsigned char sunkbd_keycode[128] = { | |
47 | 0,128,114,129,115, 59, 60, 68, 61, 87, 62, 88, 63,100, 64, 0, | |
48 | 65, 66, 67, 56,103,119, 99, 70,105,130,131,108,106, 1, 2, 3, | |
49 | 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 41, 14,110,113, 98, 55, | |
50 | 116,132, 83,133,102, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, | |
51 | 26, 27,111,127, 71, 72, 73, 74,134,135,107, 0, 29, 30, 31, 32, | |
52 | 33, 34, 35, 36, 37, 38, 39, 40, 43, 28, 96, 75, 76, 77, 82,136, | |
53 | 104,137, 69, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54,101, | |
54 | 79, 80, 81, 0, 0, 0,138, 58,125, 57,126,109, 86, 78 | |
55 | }; | |
56 | ||
57 | #define SUNKBD_CMD_RESET 0x1 | |
58 | #define SUNKBD_CMD_BELLON 0x2 | |
59 | #define SUNKBD_CMD_BELLOFF 0x3 | |
60 | #define SUNKBD_CMD_CLICK 0xa | |
61 | #define SUNKBD_CMD_NOCLICK 0xb | |
62 | #define SUNKBD_CMD_SETLED 0xe | |
63 | #define SUNKBD_CMD_LAYOUT 0xf | |
64 | ||
65 | #define SUNKBD_RET_RESET 0xff | |
66 | #define SUNKBD_RET_ALLUP 0x7f | |
67 | #define SUNKBD_RET_LAYOUT 0xfe | |
68 | ||
69 | #define SUNKBD_LAYOUT_5_MASK 0x20 | |
70 | #define SUNKBD_RELEASE 0x80 | |
71 | #define SUNKBD_KEY 0x7f | |
72 | ||
73 | /* | |
74 | * Per-keyboard data. | |
75 | */ | |
76 | ||
77 | struct sunkbd { | |
78 | unsigned char keycode[128]; | |
79 | struct input_dev dev; | |
80 | struct serio *serio; | |
81 | struct work_struct tq; | |
82 | wait_queue_head_t wait; | |
83 | char name[64]; | |
84 | char phys[32]; | |
85 | char type; | |
86 | volatile s8 reset; | |
87 | volatile s8 layout; | |
88 | }; | |
89 | ||
90 | /* | |
91 | * sunkbd_interrupt() is called by the low level driver when a character | |
92 | * is received. | |
93 | */ | |
94 | ||
95 | static irqreturn_t sunkbd_interrupt(struct serio *serio, | |
96 | unsigned char data, unsigned int flags, struct pt_regs *regs) | |
97 | { | |
98 | struct sunkbd* sunkbd = serio_get_drvdata(serio); | |
99 | ||
100 | if (sunkbd->reset <= -1) { /* If cp[i] is 0xff, sunkbd->reset will stay -1. */ | |
101 | sunkbd->reset = data; /* The keyboard sends 0xff 0xff 0xID on powerup */ | |
102 | wake_up_interruptible(&sunkbd->wait); | |
103 | goto out; | |
104 | } | |
105 | ||
106 | if (sunkbd->layout == -1) { | |
107 | sunkbd->layout = data; | |
108 | wake_up_interruptible(&sunkbd->wait); | |
109 | goto out; | |
110 | } | |
111 | ||
112 | switch (data) { | |
113 | ||
114 | case SUNKBD_RET_RESET: | |
115 | schedule_work(&sunkbd->tq); | |
116 | sunkbd->reset = -1; | |
117 | break; | |
118 | ||
119 | case SUNKBD_RET_LAYOUT: | |
120 | sunkbd->layout = -1; | |
121 | break; | |
122 | ||
123 | case SUNKBD_RET_ALLUP: /* All keys released */ | |
124 | break; | |
125 | ||
126 | default: | |
127 | if (sunkbd->keycode[data & SUNKBD_KEY]) { | |
128 | input_regs(&sunkbd->dev, regs); | |
129 | input_report_key(&sunkbd->dev, sunkbd->keycode[data & SUNKBD_KEY], !(data & SUNKBD_RELEASE)); | |
130 | input_sync(&sunkbd->dev); | |
131 | } else { | |
132 | printk(KERN_WARNING "sunkbd.c: Unknown key (scancode %#x) %s.\n", | |
133 | data & SUNKBD_KEY, data & SUNKBD_RELEASE ? "released" : "pressed"); | |
134 | } | |
135 | } | |
136 | out: | |
137 | return IRQ_HANDLED; | |
138 | } | |
139 | ||
140 | /* | |
141 | * sunkbd_event() handles events from the input module. | |
142 | */ | |
143 | ||
144 | static int sunkbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) | |
145 | { | |
146 | struct sunkbd *sunkbd = dev->private; | |
147 | ||
148 | switch (type) { | |
149 | ||
150 | case EV_LED: | |
151 | ||
152 | sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_SETLED); | |
153 | sunkbd->serio->write(sunkbd->serio, | |
154 | (!!test_bit(LED_CAPSL, dev->led) << 3) | (!!test_bit(LED_SCROLLL, dev->led) << 2) | | |
155 | (!!test_bit(LED_COMPOSE, dev->led) << 1) | !!test_bit(LED_NUML, dev->led)); | |
156 | return 0; | |
157 | ||
158 | case EV_SND: | |
159 | ||
160 | switch (code) { | |
161 | ||
162 | case SND_CLICK: | |
163 | sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_NOCLICK - value); | |
164 | return 0; | |
165 | ||
166 | case SND_BELL: | |
167 | sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_BELLOFF - value); | |
168 | return 0; | |
169 | } | |
170 | ||
171 | break; | |
172 | } | |
173 | ||
174 | return -1; | |
175 | } | |
176 | ||
177 | /* | |
178 | * sunkbd_initialize() checks for a Sun keyboard attached, and determines | |
179 | * its type. | |
180 | */ | |
181 | ||
182 | static int sunkbd_initialize(struct sunkbd *sunkbd) | |
183 | { | |
184 | sunkbd->reset = -2; | |
185 | sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_RESET); | |
186 | wait_event_interruptible_timeout(sunkbd->wait, sunkbd->reset >= 0, HZ); | |
187 | if (sunkbd->reset <0) | |
188 | return -1; | |
189 | ||
190 | sunkbd->type = sunkbd->reset; | |
191 | ||
192 | if (sunkbd->type == 4) { /* Type 4 keyboard */ | |
193 | sunkbd->layout = -2; | |
194 | sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_LAYOUT); | |
195 | wait_event_interruptible_timeout(sunkbd->wait, sunkbd->layout >= 0, HZ/4); | |
196 | if (sunkbd->layout < 0) return -1; | |
197 | if (sunkbd->layout & SUNKBD_LAYOUT_5_MASK) sunkbd->type = 5; | |
198 | } | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | /* | |
204 | * sunkbd_reinit() sets leds and beeps to a state the computer remembers they | |
205 | * were in. | |
206 | */ | |
207 | ||
208 | static void sunkbd_reinit(void *data) | |
209 | { | |
210 | struct sunkbd *sunkbd = data; | |
211 | ||
212 | wait_event_interruptible_timeout(sunkbd->wait, sunkbd->reset >= 0, HZ); | |
213 | ||
214 | sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_SETLED); | |
215 | sunkbd->serio->write(sunkbd->serio, | |
216 | (!!test_bit(LED_CAPSL, sunkbd->dev.led) << 3) | (!!test_bit(LED_SCROLLL, sunkbd->dev.led) << 2) | | |
217 | (!!test_bit(LED_COMPOSE, sunkbd->dev.led) << 1) | !!test_bit(LED_NUML, sunkbd->dev.led)); | |
218 | sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_NOCLICK - !!test_bit(SND_CLICK, sunkbd->dev.snd)); | |
219 | sunkbd->serio->write(sunkbd->serio, SUNKBD_CMD_BELLOFF - !!test_bit(SND_BELL, sunkbd->dev.snd)); | |
220 | } | |
221 | ||
222 | /* | |
223 | * sunkbd_connect() probes for a Sun keyboard and fills the necessary structures. | |
224 | */ | |
225 | ||
226 | static int sunkbd_connect(struct serio *serio, struct serio_driver *drv) | |
227 | { | |
228 | struct sunkbd *sunkbd; | |
229 | int i; | |
230 | int err; | |
231 | ||
232 | if (!(sunkbd = kmalloc(sizeof(struct sunkbd), GFP_KERNEL))) | |
233 | return -ENOMEM; | |
234 | ||
235 | memset(sunkbd, 0, sizeof(struct sunkbd)); | |
236 | ||
237 | init_input_dev(&sunkbd->dev); | |
238 | init_waitqueue_head(&sunkbd->wait); | |
239 | ||
240 | sunkbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_SND) | BIT(EV_REP); | |
241 | sunkbd->dev.ledbit[0] = BIT(LED_CAPSL) | BIT(LED_COMPOSE) | BIT(LED_SCROLLL) | BIT(LED_NUML); | |
242 | sunkbd->dev.sndbit[0] = BIT(SND_CLICK) | BIT(SND_BELL); | |
243 | ||
244 | sunkbd->serio = serio; | |
245 | ||
246 | INIT_WORK(&sunkbd->tq, sunkbd_reinit, sunkbd); | |
247 | ||
248 | sunkbd->dev.keycode = sunkbd->keycode; | |
249 | sunkbd->dev.keycodesize = sizeof(unsigned char); | |
250 | sunkbd->dev.keycodemax = ARRAY_SIZE(sunkbd_keycode); | |
251 | ||
252 | sunkbd->dev.event = sunkbd_event; | |
253 | sunkbd->dev.private = sunkbd; | |
254 | ||
255 | serio_set_drvdata(serio, sunkbd); | |
256 | ||
257 | err = serio_open(serio, drv); | |
258 | if (err) { | |
259 | serio_set_drvdata(serio, NULL); | |
260 | kfree(sunkbd); | |
261 | return err; | |
262 | } | |
263 | ||
264 | if (sunkbd_initialize(sunkbd) < 0) { | |
265 | serio_close(serio); | |
266 | serio_set_drvdata(serio, NULL); | |
267 | kfree(sunkbd); | |
268 | return -ENODEV; | |
269 | } | |
270 | ||
271 | sprintf(sunkbd->name, "Sun Type %d keyboard", sunkbd->type); | |
272 | ||
273 | memcpy(sunkbd->keycode, sunkbd_keycode, sizeof(sunkbd->keycode)); | |
274 | for (i = 0; i < 128; i++) | |
275 | set_bit(sunkbd->keycode[i], sunkbd->dev.keybit); | |
276 | clear_bit(0, sunkbd->dev.keybit); | |
277 | ||
278 | sprintf(sunkbd->phys, "%s/input0", serio->phys); | |
279 | ||
280 | sunkbd->dev.name = sunkbd->name; | |
281 | sunkbd->dev.phys = sunkbd->phys; | |
282 | sunkbd->dev.id.bustype = BUS_RS232; | |
283 | sunkbd->dev.id.vendor = SERIO_SUNKBD; | |
284 | sunkbd->dev.id.product = sunkbd->type; | |
285 | sunkbd->dev.id.version = 0x0100; | |
286 | sunkbd->dev.dev = &serio->dev; | |
287 | ||
288 | input_register_device(&sunkbd->dev); | |
289 | ||
290 | printk(KERN_INFO "input: %s on %s\n", sunkbd->name, serio->phys); | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | /* | |
296 | * sunkbd_disconnect() unregisters and closes behind us. | |
297 | */ | |
298 | ||
299 | static void sunkbd_disconnect(struct serio *serio) | |
300 | { | |
301 | struct sunkbd *sunkbd = serio_get_drvdata(serio); | |
302 | input_unregister_device(&sunkbd->dev); | |
303 | serio_close(serio); | |
304 | serio_set_drvdata(serio, NULL); | |
305 | kfree(sunkbd); | |
306 | } | |
307 | ||
308 | static struct serio_device_id sunkbd_serio_ids[] = { | |
309 | { | |
310 | .type = SERIO_RS232, | |
311 | .proto = SERIO_SUNKBD, | |
312 | .id = SERIO_ANY, | |
313 | .extra = SERIO_ANY, | |
314 | }, | |
315 | { | |
316 | .type = SERIO_RS232, | |
317 | .proto = SERIO_UNKNOWN, /* sunkbd does probe */ | |
318 | .id = SERIO_ANY, | |
319 | .extra = SERIO_ANY, | |
320 | }, | |
321 | { 0 } | |
322 | }; | |
323 | ||
324 | MODULE_DEVICE_TABLE(serio, sunkbd_serio_ids); | |
325 | ||
326 | static struct serio_driver sunkbd_drv = { | |
327 | .driver = { | |
328 | .name = "sunkbd", | |
329 | }, | |
330 | .description = DRIVER_DESC, | |
331 | .id_table = sunkbd_serio_ids, | |
332 | .interrupt = sunkbd_interrupt, | |
333 | .connect = sunkbd_connect, | |
334 | .disconnect = sunkbd_disconnect, | |
335 | }; | |
336 | ||
337 | /* | |
338 | * The functions for insering/removing us as a module. | |
339 | */ | |
340 | ||
341 | static int __init sunkbd_init(void) | |
342 | { | |
343 | serio_register_driver(&sunkbd_drv); | |
344 | return 0; | |
345 | } | |
346 | ||
347 | static void __exit sunkbd_exit(void) | |
348 | { | |
349 | serio_unregister_driver(&sunkbd_drv); | |
350 | } | |
351 | ||
352 | module_init(sunkbd_init); | |
353 | module_exit(sunkbd_exit); |