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21#include <linux/module.h>
22#include <linux/init.h>
23#include <linux/delay.h>
24#include <linux/interrupt.h>
25#include <linux/input.h>
26#include <linux/slab.h>
27
28#include "bttv.h"
29#include "bttvp.h"
30
31
32static int ir_debug;
33module_param(ir_debug, int, 0644);
34
35static int ir_rc5_remote_gap = 885;
36module_param(ir_rc5_remote_gap, int, 0644);
37
38#undef dprintk
39#define dprintk(arg...) do { \
40 if (ir_debug >= 1) \
41 printk(arg); \
42} while (0)
43
44#define DEVNAME "bttv-input"
45
46#define MODULE_NAME "bttv"
47
48
49
50static void ir_handle_key(struct bttv *btv)
51{
52 struct bttv_ir *ir = btv->remote;
53 u32 gpio,data;
54
55
56 gpio = bttv_gpio_read(&btv->c);
57 if (ir->polling) {
58 if (ir->last_gpio == gpio)
59 return;
60 ir->last_gpio = gpio;
61 }
62
63
64 data = ir_extract_bits(gpio, ir->mask_keycode);
65 dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
66 gpio, data,
67 ir->polling ? "poll" : "irq",
68 (gpio & ir->mask_keydown) ? " down" : "",
69 (gpio & ir->mask_keyup) ? " up" : "");
70
71 if ((ir->mask_keydown && (gpio & ir->mask_keydown)) ||
72 (ir->mask_keyup && !(gpio & ir->mask_keyup))) {
73 rc_keydown_notimeout(ir->dev, data, 0);
74 } else {
75
76
77 if (btv->c.type == BTTV_BOARD_WINFAST2000)
78 rc_keydown_notimeout(ir->dev, data, 0);
79
80 rc_keyup(ir->dev);
81 }
82}
83
84static void ir_enltv_handle_key(struct bttv *btv)
85{
86 struct bttv_ir *ir = btv->remote;
87 u32 gpio, data, keyup;
88
89
90 gpio = bttv_gpio_read(&btv->c);
91
92
93 data = ir_extract_bits(gpio, ir->mask_keycode);
94
95
96 keyup = (gpio & ir->mask_keyup) ? 1 << 31 : 0;
97
98 if ((ir->last_gpio & 0x7f) != data) {
99 dprintk(KERN_INFO DEVNAME ": gpio=0x%x code=%d | %s\n",
100 gpio, data,
101 (gpio & ir->mask_keyup) ? " up" : "up/down");
102
103 rc_keydown_notimeout(ir->dev, data, 0);
104 if (keyup)
105 rc_keyup(ir->dev);
106 } else {
107 if ((ir->last_gpio & 1 << 31) == keyup)
108 return;
109
110 dprintk(KERN_INFO DEVNAME ":(cnt) gpio=0x%x code=%d | %s\n",
111 gpio, data,
112 (gpio & ir->mask_keyup) ? " up" : "down");
113
114 if (keyup)
115 rc_keyup(ir->dev);
116 else
117 rc_keydown_notimeout(ir->dev, data, 0);
118 }
119
120 ir->last_gpio = data | keyup;
121}
122
123static int bttv_rc5_irq(struct bttv *btv);
124
125void bttv_input_irq(struct bttv *btv)
126{
127 struct bttv_ir *ir = btv->remote;
128
129 if (ir->rc5_gpio)
130 bttv_rc5_irq(btv);
131 else if (!ir->polling)
132 ir_handle_key(btv);
133}
134
135static void bttv_input_timer(unsigned long data)
136{
137 struct bttv *btv = (struct bttv*)data;
138 struct bttv_ir *ir = btv->remote;
139
140 if (btv->c.type == BTTV_BOARD_ENLTV_FM_2)
141 ir_enltv_handle_key(btv);
142 else
143 ir_handle_key(btv);
144 mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
145}
146
147
148
149
150
151
152
153
154#define RC5_START(x) (((x) >> 12) & 3)
155#define RC5_TOGGLE(x) (((x) >> 11) & 1)
156#define RC5_ADDR(x) (((x) >> 6) & 31)
157#define RC5_INSTR(x) ((x) & 63)
158
159
160static u32 bttv_rc5_decode(unsigned int code)
161{
162 unsigned int org_code = code;
163 unsigned int pair;
164 unsigned int rc5 = 0;
165 int i;
166
167 for (i = 0; i < 14; ++i) {
168 pair = code & 0x3;
169 code >>= 2;
170
171 rc5 <<= 1;
172 switch (pair) {
173 case 0:
174 case 2:
175 break;
176 case 1:
177 rc5 |= 1;
178 break;
179 case 3:
180 dprintk(KERN_INFO DEVNAME ":rc5_decode(%x) bad code\n",
181 org_code);
182 return 0;
183 }
184 }
185 dprintk(KERN_INFO DEVNAME ":"
186 "code=%x, rc5=%x, start=%x, toggle=%x, address=%x, "
187 "instr=%x\n", rc5, org_code, RC5_START(rc5),
188 RC5_TOGGLE(rc5), RC5_ADDR(rc5), RC5_INSTR(rc5));
189 return rc5;
190}
191
192static void bttv_rc5_timer_end(unsigned long data)
193{
194 struct bttv_ir *ir = (struct bttv_ir *)data;
195 struct timeval tv;
196 unsigned long current_jiffies;
197 u32 gap;
198 u32 rc5 = 0;
199
200
201 current_jiffies = jiffies;
202 do_gettimeofday(&tv);
203
204
205 if (tv.tv_sec - ir->base_time.tv_sec > 1) {
206 gap = 200000;
207 } else {
208 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
209 tv.tv_usec - ir->base_time.tv_usec;
210 }
211
212
213 ir->active = false;
214
215
216 if (gap < 28000) {
217 dprintk(KERN_INFO DEVNAME ": spurious timer_end\n");
218 return;
219 }
220
221 if (ir->last_bit < 20) {
222
223 dprintk(KERN_INFO DEVNAME ": short code: %x\n", ir->code);
224 } else {
225 ir->code = (ir->code << ir->shift_by) | 1;
226 rc5 = bttv_rc5_decode(ir->code);
227
228
229 if (RC5_START(rc5) != ir->start) {
230 printk(KERN_INFO DEVNAME ":"
231 " rc5 start bits invalid: %u\n", RC5_START(rc5));
232
233
234 } else if (RC5_ADDR(rc5) == ir->addr) {
235 u32 toggle = RC5_TOGGLE(rc5);
236 u32 instr = RC5_INSTR(rc5);
237
238
239 rc_keydown(ir->dev, instr, toggle);
240 dprintk(KERN_INFO DEVNAME ":"
241 " instruction %x, toggle %x\n",
242 instr, toggle);
243 }
244 }
245}
246
247static int bttv_rc5_irq(struct bttv *btv)
248{
249 struct bttv_ir *ir = btv->remote;
250 struct timeval tv;
251 u32 gpio;
252 u32 gap;
253 unsigned long current_jiffies;
254
255
256 gpio = bttv_gpio_read(&btv->c);
257
258
259 current_jiffies = jiffies;
260 do_gettimeofday(&tv);
261
262
263 if (tv.tv_sec - ir->base_time.tv_sec > 1) {
264 gap = 200000;
265 } else {
266 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
267 tv.tv_usec - ir->base_time.tv_usec;
268 }
269
270 dprintk(KERN_INFO DEVNAME ": RC5 IRQ: gap %d us for %s\n",
271 gap, (gpio & 0x20) ? "mark" : "space");
272
273
274 if (!(gpio & 0x20))
275 return 0;
276
277
278 if (ir->active) {
279
280
281 if (ir->last_bit < 28) {
282 ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
283 ir_rc5_remote_gap;
284 ir->code |= 1 << ir->last_bit;
285 }
286
287 } else {
288 ir->active = true;
289 ir->code = 0;
290 ir->base_time = tv;
291 ir->last_bit = 0;
292
293 mod_timer(&ir->timer, current_jiffies + msecs_to_jiffies(30));
294 }
295
296
297 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
298 bttv_gpio_write(&btv->c, gpio | (1 << 4));
299 return 1;
300}
301
302
303
304static void bttv_ir_start(struct bttv *btv, struct bttv_ir *ir)
305{
306 if (ir->polling) {
307 setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
308 ir->timer.expires = jiffies + msecs_to_jiffies(1000);
309 add_timer(&ir->timer);
310 } else if (ir->rc5_gpio) {
311
312 setup_timer(&ir->timer, bttv_rc5_timer_end, (unsigned long)ir);
313 ir->shift_by = 1;
314 ir->start = 3;
315 ir->addr = 0x0;
316 ir->rc5_remote_gap = ir_rc5_remote_gap;
317 }
318}
319
320static void bttv_ir_stop(struct bttv *btv)
321{
322 if (btv->remote->polling)
323 del_timer_sync(&btv->remote->timer);
324
325 if (btv->remote->rc5_gpio) {
326 u32 gpio;
327
328 del_timer_sync(&btv->remote->timer);
329
330 gpio = bttv_gpio_read(&btv->c);
331 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
332 }
333}
334
335
336
337
338
339static int get_key_pv951(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
340{
341 unsigned char b;
342
343
344 if (1 != i2c_master_recv(ir->c, &b, 1)) {
345 dprintk(KERN_INFO DEVNAME ": read error\n");
346 return -EIO;
347 }
348
349
350 if (b==0xaa)
351 return 0;
352 dprintk(KERN_INFO DEVNAME ": key %02x\n", b);
353
354
355
356
357
358
359
360
361
362
363
364
365
366 *ir_key = b;
367 *ir_raw = b;
368 return 1;
369}
370
371
372void __devinit init_bttv_i2c_ir(struct bttv *btv)
373{
374 const unsigned short addr_list[] = {
375 0x1a, 0x18, 0x64, 0x30, 0x71,
376 I2C_CLIENT_END
377 };
378 struct i2c_board_info info;
379
380 if (0 != btv->i2c_rc)
381 return;
382
383 memset(&info, 0, sizeof(struct i2c_board_info));
384 memset(&btv->init_data, 0, sizeof(btv->init_data));
385 strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
386
387 switch (btv->c.type) {
388 case BTTV_BOARD_PV951:
389 btv->init_data.name = "PV951";
390 btv->init_data.get_key = get_key_pv951;
391 btv->init_data.ir_codes = RC_MAP_PV951;
392 info.addr = 0x4b;
393 break;
394 default:
395
396
397
398
399
400
401
402
403
404 i2c_new_probed_device(&btv->c.i2c_adap, &info, addr_list, NULL);
405 return;
406 }
407
408 if (btv->init_data.name)
409 info.platform_data = &btv->init_data;
410 i2c_new_device(&btv->c.i2c_adap, &info);
411
412 return;
413}
414
415int __devexit fini_bttv_i2c(struct bttv *btv)
416{
417 if (0 != btv->i2c_rc)
418 return 0;
419
420 return i2c_del_adapter(&btv->c.i2c_adap);
421}
422
423int bttv_input_init(struct bttv *btv)
424{
425 struct bttv_ir *ir;
426 char *ir_codes = NULL;
427 struct rc_dev *rc;
428 int err = -ENOMEM;
429
430 if (!btv->has_remote)
431 return -ENODEV;
432
433 ir = kzalloc(sizeof(*ir),GFP_KERNEL);
434 rc = rc_allocate_device();
435 if (!ir || !rc)
436 goto err_out_free;
437
438
439 switch (btv->c.type) {
440 case BTTV_BOARD_AVERMEDIA:
441 case BTTV_BOARD_AVPHONE98:
442 case BTTV_BOARD_AVERMEDIA98:
443 ir_codes = RC_MAP_AVERMEDIA;
444 ir->mask_keycode = 0xf88000;
445 ir->mask_keydown = 0x010000;
446 ir->polling = 50;
447 break;
448
449 case BTTV_BOARD_AVDVBT_761:
450 case BTTV_BOARD_AVDVBT_771:
451 ir_codes = RC_MAP_AVERMEDIA_DVBT;
452 ir->mask_keycode = 0x0f00c0;
453 ir->mask_keydown = 0x000020;
454 ir->polling = 50;
455 break;
456
457 case BTTV_BOARD_PXELVWPLTVPAK:
458 ir_codes = RC_MAP_PIXELVIEW;
459 ir->mask_keycode = 0x003e00;
460 ir->mask_keyup = 0x010000;
461 ir->polling = 50;
462 break;
463 case BTTV_BOARD_PV_M4900:
464 case BTTV_BOARD_PV_BT878P_9B:
465 case BTTV_BOARD_PV_BT878P_PLUS:
466 ir_codes = RC_MAP_PIXELVIEW;
467 ir->mask_keycode = 0x001f00;
468 ir->mask_keyup = 0x008000;
469 ir->polling = 50;
470 break;
471
472 case BTTV_BOARD_WINFAST2000:
473 ir_codes = RC_MAP_WINFAST;
474 ir->mask_keycode = 0x1f8;
475 break;
476 case BTTV_BOARD_MAGICTVIEW061:
477 case BTTV_BOARD_MAGICTVIEW063:
478 ir_codes = RC_MAP_WINFAST;
479 ir->mask_keycode = 0x0008e000;
480 ir->mask_keydown = 0x00200000;
481 break;
482 case BTTV_BOARD_APAC_VIEWCOMP:
483 ir_codes = RC_MAP_APAC_VIEWCOMP;
484 ir->mask_keycode = 0x001f00;
485 ir->mask_keyup = 0x008000;
486 ir->polling = 50;
487 break;
488 case BTTV_BOARD_ASKEY_CPH03X:
489 case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
490 case BTTV_BOARD_CONTVFMI:
491 ir_codes = RC_MAP_PIXELVIEW;
492 ir->mask_keycode = 0x001F00;
493 ir->mask_keyup = 0x006000;
494 ir->polling = 50;
495 break;
496 case BTTV_BOARD_NEBULA_DIGITV:
497 ir_codes = RC_MAP_NEBULA;
498 ir->rc5_gpio = true;
499 break;
500 case BTTV_BOARD_MACHTV_MAGICTV:
501 ir_codes = RC_MAP_APAC_VIEWCOMP;
502 ir->mask_keycode = 0x001F00;
503 ir->mask_keyup = 0x004000;
504 ir->polling = 50;
505 break;
506 case BTTV_BOARD_KOZUMI_KTV_01C:
507 ir_codes = RC_MAP_PCTV_SEDNA;
508 ir->mask_keycode = 0x001f00;
509 ir->mask_keyup = 0x006000;
510 ir->polling = 50;
511 break;
512 case BTTV_BOARD_ENLTV_FM_2:
513 ir_codes = RC_MAP_ENCORE_ENLTV2;
514 ir->mask_keycode = 0x00fd00;
515 ir->mask_keyup = 0x000080;
516 ir->polling = 1;
517 ir->last_gpio = ir_extract_bits(bttv_gpio_read(&btv->c),
518 ir->mask_keycode);
519 break;
520 }
521 if (NULL == ir_codes) {
522 dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
523 err = -ENODEV;
524 goto err_out_free;
525 }
526
527 if (ir->rc5_gpio) {
528 u32 gpio;
529
530 bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
531 gpio = bttv_gpio_read(&btv->c);
532 bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
533 bttv_gpio_write(&btv->c, gpio | (1 << 4));
534 } else {
535
536 bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
537 }
538
539
540 ir->dev = rc;
541
542 snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
543 btv->c.type);
544 snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
545 pci_name(btv->c.pci));
546
547 rc->input_name = ir->name;
548 rc->input_phys = ir->phys;
549 rc->input_id.bustype = BUS_PCI;
550 rc->input_id.version = 1;
551 if (btv->c.pci->subsystem_vendor) {
552 rc->input_id.vendor = btv->c.pci->subsystem_vendor;
553 rc->input_id.product = btv->c.pci->subsystem_device;
554 } else {
555 rc->input_id.vendor = btv->c.pci->vendor;
556 rc->input_id.product = btv->c.pci->device;
557 }
558 rc->dev.parent = &btv->c.pci->dev;
559 rc->map_name = ir_codes;
560 rc->driver_name = MODULE_NAME;
561
562 btv->remote = ir;
563 bttv_ir_start(btv, ir);
564
565
566 err = rc_register_device(rc);
567 if (err)
568 goto err_out_stop;
569
570 return 0;
571
572 err_out_stop:
573 bttv_ir_stop(btv);
574 btv->remote = NULL;
575 err_out_free:
576 rc_free_device(rc);
577 kfree(ir);
578 return err;
579}
580
581void bttv_input_fini(struct bttv *btv)
582{
583 if (btv->remote == NULL)
584 return;
585
586 bttv_ir_stop(btv);
587 rc_unregister_device(btv->remote->dev);
588 kfree(btv->remote);
589 btv->remote = NULL;
590}
591