Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * |
3 | * keyboard input driver for i2c IR remote controls | |
4 | * | |
5 | * Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org> | |
6 | * modified for PixelView (BT878P+W/FM) by | |
7 | * Michal Kochanowicz <mkochano@pld.org.pl> | |
8 | * Christoph Bartelmus <lirc@bartelmus.de> | |
9 | * modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by | |
10 | * Ulrich Mueller <ulrich.mueller42@web.de> | |
c365864f MR |
11 | * modified for em2820 based USB TV tuners by |
12 | * Markus Rechberger <mrechberger@gmail.com> | |
1da177e4 LT |
13 | * |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
27 | * | |
28 | */ | |
29 | ||
30 | #include <linux/module.h> | |
31 | #include <linux/moduleparam.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/kernel.h> | |
34 | #include <linux/sched.h> | |
35 | #include <linux/string.h> | |
36 | #include <linux/timer.h> | |
37 | #include <linux/delay.h> | |
38 | #include <linux/errno.h> | |
39 | #include <linux/slab.h> | |
40 | #include <linux/i2c.h> | |
41 | #include <linux/workqueue.h> | |
1da177e4 | 42 | #include <asm/semaphore.h> |
674434c6 | 43 | |
1da177e4 | 44 | #include <media/ir-common.h> |
d5e52653 | 45 | #include <media/ir-kbd-i2c.h> |
c365864f | 46 | |
1da177e4 LT |
47 | /* Mark Phalan <phalanm@o2.ie> */ |
48 | static IR_KEYTAB_TYPE ir_codes_pv951[IR_KEYTAB_SIZE] = { | |
d5e52653 MCC |
49 | [ 0 ] = KEY_KP0, |
50 | [ 1 ] = KEY_KP1, | |
51 | [ 2 ] = KEY_KP2, | |
52 | [ 3 ] = KEY_KP3, | |
53 | [ 4 ] = KEY_KP4, | |
54 | [ 5 ] = KEY_KP5, | |
55 | [ 6 ] = KEY_KP6, | |
56 | [ 7 ] = KEY_KP7, | |
57 | [ 8 ] = KEY_KP8, | |
58 | [ 9 ] = KEY_KP9, | |
59 | ||
60 | [ 18 ] = KEY_POWER, | |
61 | [ 16 ] = KEY_MUTE, | |
62 | [ 31 ] = KEY_VOLUMEDOWN, | |
63 | [ 27 ] = KEY_VOLUMEUP, | |
64 | [ 26 ] = KEY_CHANNELUP, | |
65 | [ 30 ] = KEY_CHANNELDOWN, | |
66 | [ 14 ] = KEY_PAGEUP, | |
67 | [ 29 ] = KEY_PAGEDOWN, | |
68 | [ 19 ] = KEY_SOUND, | |
69 | ||
70 | [ 24 ] = KEY_KPPLUSMINUS, /* CH +/- */ | |
71 | [ 22 ] = KEY_SUBTITLE, /* CC */ | |
72 | [ 13 ] = KEY_TEXT, /* TTX */ | |
73 | [ 11 ] = KEY_TV, /* AIR/CBL */ | |
74 | [ 17 ] = KEY_PC, /* PC/TV */ | |
75 | [ 23 ] = KEY_OK, /* CH RTN */ | |
76 | [ 25 ] = KEY_MODE, /* FUNC */ | |
77 | [ 12 ] = KEY_SEARCH, /* AUTOSCAN */ | |
1da177e4 LT |
78 | |
79 | /* Not sure what to do with these ones! */ | |
d5e52653 MCC |
80 | [ 15 ] = KEY_SELECT, /* SOURCE */ |
81 | [ 10 ] = KEY_KPPLUS, /* +100 */ | |
82 | [ 20 ] = KEY_KPEQUAL, /* SYNC */ | |
83 | [ 28 ] = KEY_MEDIA, /* PC/TV */ | |
1da177e4 LT |
84 | }; |
85 | ||
1da177e4 LT |
86 | /* ----------------------------------------------------------------------- */ |
87 | /* insmod parameters */ | |
88 | ||
89 | static int debug; | |
90 | module_param(debug, int, 0644); /* debug level (0,1,2) */ | |
91 | ||
92 | #define DEVNAME "ir-kbd-i2c" | |
93 | #define dprintk(level, fmt, arg...) if (debug >= level) \ | |
94 | printk(KERN_DEBUG DEVNAME ": " fmt , ## arg) | |
95 | ||
96 | /* ----------------------------------------------------------------------- */ | |
97 | ||
d5e52653 | 98 | static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
1da177e4 LT |
99 | { |
100 | unsigned char buf[3]; | |
101 | int start, toggle, dev, code; | |
102 | ||
103 | /* poll IR chip */ | |
104 | if (3 != i2c_master_recv(&ir->c,buf,3)) | |
105 | return -EIO; | |
106 | ||
107 | /* split rc5 data block ... */ | |
108 | start = (buf[0] >> 6) & 3; | |
109 | toggle = (buf[0] >> 5) & 1; | |
110 | dev = buf[0] & 0x1f; | |
111 | code = (buf[1] >> 2) & 0x3f; | |
112 | ||
113 | if (3 != start) | |
114 | /* no key pressed */ | |
115 | return 0; | |
116 | dprintk(1,"ir hauppauge (rc5): s%d t%d dev=%d code=%d\n", | |
117 | start, toggle, dev, code); | |
118 | ||
119 | /* return key */ | |
120 | *ir_key = code; | |
121 | *ir_raw = (start << 12) | (toggle << 11) | (dev << 6) | code; | |
122 | return 1; | |
123 | } | |
124 | ||
d5e52653 | 125 | static int get_key_pixelview(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
1da177e4 | 126 | { |
4ac97914 | 127 | unsigned char b; |
1da177e4 LT |
128 | |
129 | /* poll IR chip */ | |
130 | if (1 != i2c_master_recv(&ir->c,&b,1)) { | |
131 | dprintk(1,"read error\n"); | |
132 | return -EIO; | |
133 | } | |
134 | *ir_key = b; | |
135 | *ir_raw = b; | |
136 | return 1; | |
137 | } | |
138 | ||
d5e52653 | 139 | static int get_key_pv951(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
1da177e4 | 140 | { |
4ac97914 | 141 | unsigned char b; |
1da177e4 LT |
142 | |
143 | /* poll IR chip */ | |
144 | if (1 != i2c_master_recv(&ir->c,&b,1)) { | |
145 | dprintk(1,"read error\n"); | |
146 | return -EIO; | |
147 | } | |
148 | ||
149 | /* ignore 0xaa */ | |
150 | if (b==0xaa) | |
151 | return 0; | |
152 | dprintk(2,"key %02x\n", b); | |
153 | ||
154 | *ir_key = b; | |
155 | *ir_raw = b; | |
156 | return 1; | |
157 | } | |
158 | ||
d5e52653 | 159 | static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
1da177e4 LT |
160 | { |
161 | unsigned char b; | |
162 | ||
163 | /* poll IR chip */ | |
164 | if (1 != i2c_master_recv(&ir->c,&b,1)) { | |
165 | dprintk(1,"read error\n"); | |
166 | return -EIO; | |
167 | } | |
168 | ||
169 | /* it seems that 0xFE indicates that a button is still hold | |
4f9c05aa MCC |
170 | down, while 0xff indicates that no button is hold |
171 | down. 0xfe sequences are sometimes interrupted by 0xFF */ | |
1da177e4 LT |
172 | |
173 | dprintk(2,"key %02x\n", b); | |
174 | ||
4f9c05aa | 175 | if (b == 0xff) |
1da177e4 LT |
176 | return 0; |
177 | ||
4f9c05aa | 178 | if (b == 0xfe) |
1da177e4 LT |
179 | /* keep old data */ |
180 | return 1; | |
181 | ||
182 | *ir_key = b; | |
183 | *ir_raw = b; | |
184 | return 1; | |
185 | } | |
186 | ||
8069695c RC |
187 | /* The new pinnacle PCTV remote (with the colored buttons) |
188 | * | |
189 | * Ricardo Cerqueira <v4l@cerqueira.org> | |
190 | */ | |
191 | ||
192 | int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) | |
193 | { | |
194 | unsigned char b[4]; | |
195 | unsigned int start = 0,parity = 0,code = 0; | |
196 | ||
197 | /* poll IR chip */ | |
198 | if (4 != i2c_master_recv(&ir->c,b,4)) { | |
199 | dprintk(2,"read error\n"); | |
200 | return -EIO; | |
201 | } | |
202 | ||
203 | for (start = 0; start<4; start++) { | |
204 | if (b[start] == 0x80) { | |
205 | code=b[(start+3)%4]; | |
206 | parity=b[(start+2)%4]; | |
207 | } | |
208 | } | |
209 | ||
210 | /* Empty Request */ | |
211 | if (parity==0) | |
212 | return 0; | |
213 | ||
214 | /* Repeating... */ | |
215 | if (ir->old == parity) | |
216 | return 0; | |
217 | ||
218 | ||
219 | ir->old = parity; | |
220 | ||
221 | /* Reduce code value to fit inside IR_KEYTAB_SIZE | |
222 | * | |
223 | * this is the only value that results in 42 unique | |
224 | * codes < 128 | |
225 | */ | |
226 | ||
227 | code %= 0x88; | |
228 | ||
229 | *ir_raw = code; | |
230 | *ir_key = code; | |
231 | ||
232 | dprintk(1,"Pinnacle PCTV key %02x\n", code); | |
233 | ||
234 | return 1; | |
235 | } | |
236 | ||
237 | EXPORT_SYMBOL_GPL(get_key_pinnacle); | |
238 | ||
1da177e4 LT |
239 | /* ----------------------------------------------------------------------- */ |
240 | ||
d5e52653 | 241 | static void ir_key_poll(struct IR_i2c *ir) |
1da177e4 LT |
242 | { |
243 | static u32 ir_key, ir_raw; | |
244 | int rc; | |
245 | ||
246 | dprintk(2,"ir_poll_key\n"); | |
247 | rc = ir->get_key(ir, &ir_key, &ir_raw); | |
248 | if (rc < 0) { | |
249 | dprintk(2,"error\n"); | |
250 | return; | |
251 | } | |
252 | ||
253 | if (0 == rc) { | |
b7df3910 | 254 | ir_input_nokey(ir->input, &ir->ir); |
1da177e4 | 255 | } else { |
b7df3910 | 256 | ir_input_keydown(ir->input, &ir->ir, ir_key, ir_raw); |
1da177e4 LT |
257 | } |
258 | } | |
259 | ||
260 | static void ir_timer(unsigned long data) | |
261 | { | |
d5e52653 | 262 | struct IR_i2c *ir = (struct IR_i2c*)data; |
1da177e4 LT |
263 | schedule_work(&ir->work); |
264 | } | |
265 | ||
266 | static void ir_work(void *data) | |
267 | { | |
d5e52653 | 268 | struct IR_i2c *ir = data; |
1da177e4 LT |
269 | ir_key_poll(ir); |
270 | mod_timer(&ir->timer, jiffies+HZ/10); | |
271 | } | |
272 | ||
273 | /* ----------------------------------------------------------------------- */ | |
274 | ||
275 | static int ir_attach(struct i2c_adapter *adap, int addr, | |
276 | unsigned short flags, int kind); | |
277 | static int ir_detach(struct i2c_client *client); | |
278 | static int ir_probe(struct i2c_adapter *adap); | |
279 | ||
280 | static struct i2c_driver driver = { | |
604f28e2 | 281 | .driver = { |
604f28e2 LR |
282 | .name = "ir remote kbd driver", |
283 | }, | |
dd815408 | 284 | .id = I2C_DRIVERID_INFRARED, |
4ac97914 MCC |
285 | .attach_adapter = ir_probe, |
286 | .detach_client = ir_detach, | |
1da177e4 LT |
287 | }; |
288 | ||
289 | static struct i2c_client client_template = | |
290 | { | |
4ac97914 MCC |
291 | .name = "unset", |
292 | .driver = &driver | |
1da177e4 LT |
293 | }; |
294 | ||
295 | static int ir_attach(struct i2c_adapter *adap, int addr, | |
296 | unsigned short flags, int kind) | |
297 | { | |
298 | IR_KEYTAB_TYPE *ir_codes = NULL; | |
299 | char *name; | |
300 | int ir_type; | |
afd1a0c9 | 301 | struct IR_i2c *ir; |
b7df3910 | 302 | struct input_dev *input_dev; |
1da177e4 | 303 | |
674434c6 | 304 | ir = kzalloc(sizeof(struct IR_i2c),GFP_KERNEL); |
b7df3910 DT |
305 | input_dev = input_allocate_device(); |
306 | if (!ir || !input_dev) { | |
307 | kfree(ir); | |
308 | input_free_device(input_dev); | |
afd1a0c9 | 309 | return -ENOMEM; |
b7df3910 DT |
310 | } |
311 | ||
1da177e4 | 312 | ir->c = client_template; |
b7df3910 | 313 | ir->input = input_dev; |
1da177e4 LT |
314 | |
315 | i2c_set_clientdata(&ir->c, ir); | |
316 | ir->c.adapter = adap; | |
317 | ir->c.addr = addr; | |
318 | ||
319 | switch(addr) { | |
320 | case 0x64: | |
321 | name = "Pixelview"; | |
322 | ir->get_key = get_key_pixelview; | |
323 | ir_type = IR_TYPE_OTHER; | |
324 | ir_codes = ir_codes_empty; | |
325 | break; | |
326 | case 0x4b: | |
327 | name = "PV951"; | |
328 | ir->get_key = get_key_pv951; | |
329 | ir_type = IR_TYPE_OTHER; | |
330 | ir_codes = ir_codes_pv951; | |
331 | break; | |
332 | case 0x18: | |
333 | case 0x1a: | |
334 | name = "Hauppauge"; | |
335 | ir->get_key = get_key_haup; | |
336 | ir_type = IR_TYPE_RC5; | |
337 | ir_codes = ir_codes_rc5_tv; | |
338 | break; | |
339 | case 0x30: | |
d5e52653 MCC |
340 | name = "KNC One"; |
341 | ir->get_key = get_key_knc1; | |
342 | ir_type = IR_TYPE_OTHER; | |
343 | ir_codes = ir_codes_empty; | |
1da177e4 LT |
344 | break; |
345 | case 0x7a: | |
ac9cd976 RC |
346 | case 0x47: |
347 | /* Handled by saa7134-input */ | |
348 | name = "SAA713x remote"; | |
d5e52653 | 349 | ir_type = IR_TYPE_OTHER; |
1da177e4 LT |
350 | break; |
351 | default: | |
352 | /* shouldn't happen */ | |
353 | printk(DEVNAME ": Huh? unknown i2c address (0x%02x)?\n",addr); | |
354 | kfree(ir); | |
355 | return -1; | |
356 | } | |
357 | ||
ac9cd976 | 358 | /* Sets name */ |
1da177e4 | 359 | snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (%s)", name); |
d5e52653 MCC |
360 | ir->ir_codes=ir_codes; |
361 | ||
362 | /* register i2c device | |
363 | * At device register, IR codes may be changed to be | |
364 | * board dependent. | |
674434c6 | 365 | */ |
d5e52653 | 366 | i2c_attach_client(&ir->c); |
1da177e4 | 367 | |
ac9cd976 RC |
368 | /* If IR not supported or disabled, unregisters driver */ |
369 | if (ir->get_key == NULL) { | |
370 | i2c_detach_client(&ir->c); | |
371 | kfree(ir); | |
372 | return -1; | |
373 | } | |
374 | ||
375 | /* Phys addr can only be set after attaching (for ir->c.dev.bus_id) */ | |
376 | snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0", | |
377 | ir->c.adapter->dev.bus_id, | |
378 | ir->c.dev.bus_id); | |
379 | ||
1da177e4 | 380 | /* init + register input device */ |
b7df3910 DT |
381 | ir_input_init(input_dev, &ir->ir, ir_type, ir_codes); |
382 | input_dev->id.bustype = BUS_I2C; | |
383 | input_dev->name = ir->c.name; | |
384 | input_dev->phys = ir->phys; | |
385 | ||
d5e52653 | 386 | /* register event device */ |
b7df3910 | 387 | input_register_device(ir->input); |
1da177e4 LT |
388 | |
389 | /* start polling via eventd */ | |
390 | INIT_WORK(&ir->work, ir_work, ir); | |
391 | init_timer(&ir->timer); | |
392 | ir->timer.function = ir_timer; | |
393 | ir->timer.data = (unsigned long)ir; | |
394 | schedule_work(&ir->work); | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | static int ir_detach(struct i2c_client *client) | |
400 | { | |
4ac97914 | 401 | struct IR_i2c *ir = i2c_get_clientdata(client); |
1da177e4 LT |
402 | |
403 | /* kill outstanding polls */ | |
404 | del_timer(&ir->timer); | |
405 | flush_scheduled_work(); | |
406 | ||
407 | /* unregister devices */ | |
b7df3910 | 408 | input_unregister_device(ir->input); |
1da177e4 LT |
409 | i2c_detach_client(&ir->c); |
410 | ||
411 | /* free memory */ | |
412 | kfree(ir); | |
413 | return 0; | |
414 | } | |
415 | ||
416 | static int ir_probe(struct i2c_adapter *adap) | |
417 | { | |
418 | ||
419 | /* The external IR receiver is at i2c address 0x34 (0x35 for | |
420 | reads). Future Hauppauge cards will have an internal | |
421 | receiver at 0x30 (0x31 for reads). In theory, both can be | |
422 | fitted, and Hauppauge suggest an external overrides an | |
423 | internal. | |
424 | ||
425 | That's why we probe 0x1a (~0x34) first. CB | |
426 | */ | |
427 | ||
428 | static const int probe_bttv[] = { 0x1a, 0x18, 0x4b, 0x64, 0x30, -1}; | |
c2f6f9d8 | 429 | static const int probe_saa7134[] = { 0x7a, 0x47, -1 }; |
b296fc60 | 430 | static const int probe_em28XX[] = { 0x30, 0x47, -1 }; |
1da177e4 | 431 | const int *probe = NULL; |
4f9c05aa MCC |
432 | struct i2c_client c; |
433 | unsigned char buf; | |
434 | int i,rc; | |
1da177e4 LT |
435 | |
436 | switch (adap->id) { | |
c7a46533 | 437 | case I2C_HW_B_BT848: |
1da177e4 LT |
438 | probe = probe_bttv; |
439 | break; | |
1684a984 | 440 | case I2C_HW_SAA7134: |
1da177e4 LT |
441 | probe = probe_saa7134; |
442 | break; | |
b296fc60 MCC |
443 | case I2C_HW_B_EM28XX: |
444 | probe = probe_em28XX; | |
c365864f | 445 | break; |
1da177e4 LT |
446 | } |
447 | if (NULL == probe) | |
448 | return 0; | |
449 | ||
450 | memset(&c,0,sizeof(c)); | |
451 | c.adapter = adap; | |
d5e52653 | 452 | for (i = 0; -1 != probe[i]; i++) { |
1da177e4 | 453 | c.addr = probe[i]; |
d5e52653 | 454 | rc = i2c_master_recv(&c,&buf,0); |
1da177e4 LT |
455 | dprintk(1,"probe 0x%02x @ %s: %s\n", |
456 | probe[i], adap->name, | |
d5e52653 MCC |
457 | (0 == rc) ? "yes" : "no"); |
458 | if (0 == rc) { | |
459 | ir_attach(adap,probe[i],0,0); | |
460 | break; | |
1da177e4 LT |
461 | } |
462 | } | |
463 | return 0; | |
464 | } | |
465 | ||
466 | /* ----------------------------------------------------------------------- */ | |
467 | ||
468 | MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller"); | |
469 | MODULE_DESCRIPTION("input driver for i2c IR remote controls"); | |
470 | MODULE_LICENSE("GPL"); | |
471 | ||
472 | static int __init ir_init(void) | |
473 | { | |
474 | return i2c_add_driver(&driver); | |
475 | } | |
476 | ||
477 | static void __exit ir_fini(void) | |
478 | { | |
479 | i2c_del_driver(&driver); | |
480 | } | |
481 | ||
482 | module_init(ir_init); | |
483 | module_exit(ir_fini); | |
484 | ||
485 | /* | |
486 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
487 | * --------------------------------------------------------------------------- | |
488 | * Local variables: | |
489 | * c-basic-offset: 8 | |
490 | * End: | |
491 | */ |