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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (c) 1999-2001 Vojtech Pavlik |
3 | */ | |
4 | ||
5 | /* | |
6 | * Sun 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 <vojtech@ucw.cz>, or by paper mail: | |
26 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |
27 | */ | |
28 | ||
29 | #include <linux/delay.h> | |
d43c36dc | 30 | #include <linux/sched.h> |
1da177e4 LT |
31 | #include <linux/slab.h> |
32 | #include <linux/module.h> | |
33 | #include <linux/interrupt.h> | |
1da177e4 LT |
34 | #include <linux/input.h> |
35 | #include <linux/serio.h> | |
36 | #include <linux/workqueue.h> | |
37 | ||
38 | #define DRIVER_DESC "Sun keyboard driver" | |
39 | ||
40 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
41 | MODULE_DESCRIPTION(DRIVER_DESC); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
44 | static unsigned char sunkbd_keycode[128] = { | |
8d9a9ae3 | 45 | 0,128,114,129,115, 59, 60, 68, 61, 87, 62, 88, 63,100, 64,112, |
1da177e4 LT |
46 | 65, 66, 67, 56,103,119, 99, 70,105,130,131,108,106, 1, 2, 3, |
47 | 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 41, 14,110,113, 98, 55, | |
48 | 116,132, 83,133,102, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, | |
49 | 26, 27,111,127, 71, 72, 73, 74,134,135,107, 0, 29, 30, 31, 32, | |
50 | 33, 34, 35, 36, 37, 38, 39, 40, 43, 28, 96, 75, 76, 77, 82,136, | |
51 | 104,137, 69, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54,101, | |
52 | 79, 80, 81, 0, 0, 0,138, 58,125, 57,126,109, 86, 78 | |
53 | }; | |
54 | ||
55 | #define SUNKBD_CMD_RESET 0x1 | |
56 | #define SUNKBD_CMD_BELLON 0x2 | |
57 | #define SUNKBD_CMD_BELLOFF 0x3 | |
58 | #define SUNKBD_CMD_CLICK 0xa | |
59 | #define SUNKBD_CMD_NOCLICK 0xb | |
60 | #define SUNKBD_CMD_SETLED 0xe | |
61 | #define SUNKBD_CMD_LAYOUT 0xf | |
62 | ||
63 | #define SUNKBD_RET_RESET 0xff | |
64 | #define SUNKBD_RET_ALLUP 0x7f | |
65 | #define SUNKBD_RET_LAYOUT 0xfe | |
66 | ||
67 | #define SUNKBD_LAYOUT_5_MASK 0x20 | |
68 | #define SUNKBD_RELEASE 0x80 | |
69 | #define SUNKBD_KEY 0x7f | |
70 | ||
71 | /* | |
72 | * Per-keyboard data. | |
73 | */ | |
74 | ||
75 | struct sunkbd { | |
7cac9cd9 | 76 | unsigned char keycode[ARRAY_SIZE(sunkbd_keycode)]; |
3c42f0c3 | 77 | struct input_dev *dev; |
1da177e4 LT |
78 | struct serio *serio; |
79 | struct work_struct tq; | |
80 | wait_queue_head_t wait; | |
81 | char name[64]; | |
82 | char phys[32]; | |
83 | char type; | |
7cac9cd9 | 84 | bool enabled; |
1da177e4 LT |
85 | volatile s8 reset; |
86 | volatile s8 layout; | |
87 | }; | |
88 | ||
89 | /* | |
90 | * sunkbd_interrupt() is called by the low level driver when a character | |
91 | * is received. | |
92 | */ | |
93 | ||
94 | static irqreturn_t sunkbd_interrupt(struct serio *serio, | |
7d12e780 | 95 | unsigned char data, unsigned int flags) |
1da177e4 | 96 | { |
7cac9cd9 | 97 | struct sunkbd *sunkbd = serio_get_drvdata(serio); |
1da177e4 | 98 | |
7cac9cd9 DT |
99 | if (sunkbd->reset <= -1) { |
100 | /* | |
101 | * If cp[i] is 0xff, sunkbd->reset will stay -1. | |
102 | * The keyboard sends 0xff 0xff 0xID on powerup. | |
103 | */ | |
104 | sunkbd->reset = data; | |
1da177e4 LT |
105 | wake_up_interruptible(&sunkbd->wait); |
106 | goto out; | |
107 | } | |
108 | ||
109 | if (sunkbd->layout == -1) { | |
110 | sunkbd->layout = data; | |
111 | wake_up_interruptible(&sunkbd->wait); | |
112 | goto out; | |
113 | } | |
114 | ||
115 | switch (data) { | |
116 | ||
7cac9cd9 DT |
117 | case SUNKBD_RET_RESET: |
118 | schedule_work(&sunkbd->tq); | |
119 | sunkbd->reset = -1; | |
120 | break; | |
1da177e4 | 121 | |
7cac9cd9 DT |
122 | case SUNKBD_RET_LAYOUT: |
123 | sunkbd->layout = -1; | |
124 | break; | |
1da177e4 | 125 | |
7cac9cd9 DT |
126 | case SUNKBD_RET_ALLUP: /* All keys released */ |
127 | break; | |
128 | ||
129 | default: | |
130 | if (!sunkbd->enabled) | |
1da177e4 LT |
131 | break; |
132 | ||
7cac9cd9 DT |
133 | if (sunkbd->keycode[data & SUNKBD_KEY]) { |
134 | input_report_key(sunkbd->dev, | |
135 | sunkbd->keycode[data & SUNKBD_KEY], | |
136 | !(data & SUNKBD_RELEASE)); | |
137 | input_sync(sunkbd->dev); | |
138 | } else { | |
139 | printk(KERN_WARNING | |
140 | "sunkbd.c: Unknown key (scancode %#x) %s.\n", | |
141 | data & SUNKBD_KEY, | |
142 | data & SUNKBD_RELEASE ? "released" : "pressed"); | |
143 | } | |
1da177e4 LT |
144 | } |
145 | out: | |
146 | return IRQ_HANDLED; | |
147 | } | |
148 | ||
149 | /* | |
150 | * sunkbd_event() handles events from the input module. | |
151 | */ | |
152 | ||
7cac9cd9 DT |
153 | static int sunkbd_event(struct input_dev *dev, |
154 | unsigned int type, unsigned int code, int value) | |
1da177e4 | 155 | { |
b356872f | 156 | struct sunkbd *sunkbd = input_get_drvdata(dev); |
1da177e4 LT |
157 | |
158 | switch (type) { | |
159 | ||
7cac9cd9 | 160 | case EV_LED: |
1da177e4 | 161 | |
7cac9cd9 DT |
162 | serio_write(sunkbd->serio, SUNKBD_CMD_SETLED); |
163 | serio_write(sunkbd->serio, | |
164 | (!!test_bit(LED_CAPSL, dev->led) << 3) | | |
165 | (!!test_bit(LED_SCROLLL, dev->led) << 2) | | |
166 | (!!test_bit(LED_COMPOSE, dev->led) << 1) | | |
167 | !!test_bit(LED_NUML, dev->led)); | |
168 | return 0; | |
1da177e4 | 169 | |
7cac9cd9 | 170 | case EV_SND: |
1da177e4 | 171 | |
7cac9cd9 | 172 | switch (code) { |
1da177e4 | 173 | |
7cac9cd9 DT |
174 | case SND_CLICK: |
175 | serio_write(sunkbd->serio, SUNKBD_CMD_NOCLICK - value); | |
176 | return 0; | |
1da177e4 | 177 | |
7cac9cd9 DT |
178 | case SND_BELL: |
179 | serio_write(sunkbd->serio, SUNKBD_CMD_BELLOFF - value); | |
180 | return 0; | |
181 | } | |
1da177e4 | 182 | |
7cac9cd9 | 183 | break; |
1da177e4 LT |
184 | } |
185 | ||
186 | return -1; | |
187 | } | |
188 | ||
189 | /* | |
190 | * sunkbd_initialize() checks for a Sun keyboard attached, and determines | |
191 | * its type. | |
192 | */ | |
193 | ||
194 | static int sunkbd_initialize(struct sunkbd *sunkbd) | |
195 | { | |
196 | sunkbd->reset = -2; | |
dd0d5443 | 197 | serio_write(sunkbd->serio, SUNKBD_CMD_RESET); |
1da177e4 | 198 | wait_event_interruptible_timeout(sunkbd->wait, sunkbd->reset >= 0, HZ); |
3c42f0c3 | 199 | if (sunkbd->reset < 0) |
1da177e4 LT |
200 | return -1; |
201 | ||
202 | sunkbd->type = sunkbd->reset; | |
203 | ||
204 | if (sunkbd->type == 4) { /* Type 4 keyboard */ | |
205 | sunkbd->layout = -2; | |
dd0d5443 | 206 | serio_write(sunkbd->serio, SUNKBD_CMD_LAYOUT); |
7cac9cd9 DT |
207 | wait_event_interruptible_timeout(sunkbd->wait, |
208 | sunkbd->layout >= 0, HZ / 4); | |
209 | if (sunkbd->layout < 0) | |
210 | return -1; | |
211 | if (sunkbd->layout & SUNKBD_LAYOUT_5_MASK) | |
212 | sunkbd->type = 5; | |
1da177e4 LT |
213 | } |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
218 | /* | |
219 | * sunkbd_reinit() sets leds and beeps to a state the computer remembers they | |
220 | * were in. | |
221 | */ | |
222 | ||
c4028958 | 223 | static void sunkbd_reinit(struct work_struct *work) |
1da177e4 | 224 | { |
c4028958 | 225 | struct sunkbd *sunkbd = container_of(work, struct sunkbd, tq); |
1da177e4 LT |
226 | |
227 | wait_event_interruptible_timeout(sunkbd->wait, sunkbd->reset >= 0, HZ); | |
228 | ||
dd0d5443 DT |
229 | serio_write(sunkbd->serio, SUNKBD_CMD_SETLED); |
230 | serio_write(sunkbd->serio, | |
231 | (!!test_bit(LED_CAPSL, sunkbd->dev->led) << 3) | | |
232 | (!!test_bit(LED_SCROLLL, sunkbd->dev->led) << 2) | | |
233 | (!!test_bit(LED_COMPOSE, sunkbd->dev->led) << 1) | | |
234 | !!test_bit(LED_NUML, sunkbd->dev->led)); | |
7cac9cd9 DT |
235 | serio_write(sunkbd->serio, |
236 | SUNKBD_CMD_NOCLICK - !!test_bit(SND_CLICK, sunkbd->dev->snd)); | |
237 | serio_write(sunkbd->serio, | |
238 | SUNKBD_CMD_BELLOFF - !!test_bit(SND_BELL, sunkbd->dev->snd)); | |
3c42f0c3 DT |
239 | } |
240 | ||
7cac9cd9 | 241 | static void sunkbd_enable(struct sunkbd *sunkbd, bool enable) |
3c42f0c3 DT |
242 | { |
243 | serio_pause_rx(sunkbd->serio); | |
9bc83dcf | 244 | sunkbd->enabled = enable; |
3c42f0c3 | 245 | serio_continue_rx(sunkbd->serio); |
1da177e4 LT |
246 | } |
247 | ||
248 | /* | |
7cac9cd9 DT |
249 | * sunkbd_connect() probes for a Sun keyboard and fills the necessary |
250 | * structures. | |
1da177e4 LT |
251 | */ |
252 | ||
253 | static int sunkbd_connect(struct serio *serio, struct serio_driver *drv) | |
254 | { | |
255 | struct sunkbd *sunkbd; | |
3c42f0c3 DT |
256 | struct input_dev *input_dev; |
257 | int err = -ENOMEM; | |
1da177e4 | 258 | int i; |
1da177e4 | 259 | |
3c42f0c3 DT |
260 | sunkbd = kzalloc(sizeof(struct sunkbd), GFP_KERNEL); |
261 | input_dev = input_allocate_device(); | |
262 | if (!sunkbd || !input_dev) | |
2b03b60e | 263 | goto fail1; |
1da177e4 LT |
264 | |
265 | sunkbd->serio = serio; | |
3c42f0c3 DT |
266 | sunkbd->dev = input_dev; |
267 | init_waitqueue_head(&sunkbd->wait); | |
c4028958 | 268 | INIT_WORK(&sunkbd->tq, sunkbd_reinit); |
3c42f0c3 | 269 | snprintf(sunkbd->phys, sizeof(sunkbd->phys), "%s/input0", serio->phys); |
1da177e4 LT |
270 | |
271 | serio_set_drvdata(serio, sunkbd); | |
272 | ||
273 | err = serio_open(serio, drv); | |
3c42f0c3 | 274 | if (err) |
2b03b60e | 275 | goto fail2; |
1da177e4 LT |
276 | |
277 | if (sunkbd_initialize(sunkbd) < 0) { | |
2b03b60e DT |
278 | err = -ENODEV; |
279 | goto fail3; | |
1da177e4 LT |
280 | } |
281 | ||
7cac9cd9 DT |
282 | snprintf(sunkbd->name, sizeof(sunkbd->name), |
283 | "Sun Type %d keyboard", sunkbd->type); | |
1da177e4 | 284 | memcpy(sunkbd->keycode, sunkbd_keycode, sizeof(sunkbd->keycode)); |
1da177e4 | 285 | |
3c42f0c3 DT |
286 | input_dev->name = sunkbd->name; |
287 | input_dev->phys = sunkbd->phys; | |
288 | input_dev->id.bustype = BUS_RS232; | |
289 | input_dev->id.vendor = SERIO_SUNKBD; | |
290 | input_dev->id.product = sunkbd->type; | |
291 | input_dev->id.version = 0x0100; | |
469ba4df | 292 | input_dev->dev.parent = &serio->dev; |
b356872f DT |
293 | |
294 | input_set_drvdata(input_dev, sunkbd); | |
295 | ||
3c42f0c3 DT |
296 | input_dev->event = sunkbd_event; |
297 | ||
7b19ada2 JS |
298 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_LED) | |
299 | BIT_MASK(EV_SND) | BIT_MASK(EV_REP); | |
300 | input_dev->ledbit[0] = BIT_MASK(LED_CAPSL) | BIT_MASK(LED_COMPOSE) | | |
301 | BIT_MASK(LED_SCROLLL) | BIT_MASK(LED_NUML); | |
302 | input_dev->sndbit[0] = BIT_MASK(SND_CLICK) | BIT_MASK(SND_BELL); | |
3c42f0c3 DT |
303 | |
304 | input_dev->keycode = sunkbd->keycode; | |
305 | input_dev->keycodesize = sizeof(unsigned char); | |
306 | input_dev->keycodemax = ARRAY_SIZE(sunkbd_keycode); | |
7cac9cd9 DT |
307 | for (i = 0; i < ARRAY_SIZE(sunkbd_keycode); i++) |
308 | __set_bit(sunkbd->keycode[i], input_dev->keybit); | |
309 | __clear_bit(KEY_RESERVED, input_dev->keybit); | |
1da177e4 | 310 | |
7cac9cd9 | 311 | sunkbd_enable(sunkbd, true); |
2b03b60e DT |
312 | |
313 | err = input_register_device(sunkbd->dev); | |
314 | if (err) | |
315 | goto fail4; | |
316 | ||
1da177e4 | 317 | return 0; |
3c42f0c3 | 318 | |
7cac9cd9 | 319 | fail4: sunkbd_enable(sunkbd, false); |
2b03b60e DT |
320 | fail3: serio_close(serio); |
321 | fail2: serio_set_drvdata(serio, NULL); | |
322 | fail1: input_free_device(input_dev); | |
3c42f0c3 DT |
323 | kfree(sunkbd); |
324 | return err; | |
1da177e4 LT |
325 | } |
326 | ||
327 | /* | |
328 | * sunkbd_disconnect() unregisters and closes behind us. | |
329 | */ | |
330 | ||
331 | static void sunkbd_disconnect(struct serio *serio) | |
332 | { | |
333 | struct sunkbd *sunkbd = serio_get_drvdata(serio); | |
3c42f0c3 | 334 | |
7cac9cd9 | 335 | sunkbd_enable(sunkbd, false); |
3c42f0c3 | 336 | input_unregister_device(sunkbd->dev); |
1da177e4 LT |
337 | serio_close(serio); |
338 | serio_set_drvdata(serio, NULL); | |
339 | kfree(sunkbd); | |
340 | } | |
341 | ||
342 | static struct serio_device_id sunkbd_serio_ids[] = { | |
343 | { | |
344 | .type = SERIO_RS232, | |
345 | .proto = SERIO_SUNKBD, | |
346 | .id = SERIO_ANY, | |
347 | .extra = SERIO_ANY, | |
348 | }, | |
349 | { | |
350 | .type = SERIO_RS232, | |
351 | .proto = SERIO_UNKNOWN, /* sunkbd does probe */ | |
352 | .id = SERIO_ANY, | |
353 | .extra = SERIO_ANY, | |
354 | }, | |
355 | { 0 } | |
356 | }; | |
357 | ||
358 | MODULE_DEVICE_TABLE(serio, sunkbd_serio_ids); | |
359 | ||
360 | static struct serio_driver sunkbd_drv = { | |
361 | .driver = { | |
362 | .name = "sunkbd", | |
363 | }, | |
364 | .description = DRIVER_DESC, | |
365 | .id_table = sunkbd_serio_ids, | |
366 | .interrupt = sunkbd_interrupt, | |
367 | .connect = sunkbd_connect, | |
368 | .disconnect = sunkbd_disconnect, | |
369 | }; | |
370 | ||
65ac9f7a | 371 | module_serio_driver(sunkbd_drv); |