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