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20#include "em28xx.h"
21
22#include <linux/module.h>
23#include <linux/init.h>
24#include <linux/delay.h>
25#include <linux/interrupt.h>
26#include <linux/usb.h>
27#include <linux/slab.h>
28#include <linux/bitrev.h>
29
30#define EM28XX_SNAPSHOT_KEY KEY_CAMERA
31#define EM28XX_BUTTONS_DEBOUNCED_QUERY_INTERVAL 500
32#define EM28XX_BUTTONS_VOLATILE_QUERY_INTERVAL 100
33
34static unsigned int ir_debug;
35module_param(ir_debug, int, 0644);
36MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
37
38#define MODULE_NAME "em28xx"
39
40#define dprintk(fmt, arg...) do { \
41 if (ir_debug) \
42 dev_printk(KERN_DEBUG, &ir->dev->intf->dev, \
43 "input: %s: " fmt, __func__, ## arg); \
44} while (0)
45
46
47
48
49
50struct em28xx_ir_poll_result {
51 unsigned int toggle_bit:1;
52 unsigned int read_count:7;
53
54 enum rc_proto protocol;
55 u32 scancode;
56};
57
58struct em28xx_IR {
59 struct em28xx *dev;
60 struct rc_dev *rc;
61 char name[32];
62 char phys[32];
63
64
65 int polling;
66 struct delayed_work work;
67 unsigned int full_code:1;
68 unsigned int last_readcount;
69 u64 rc_proto;
70
71 struct i2c_client *i2c_client;
72
73 int (*get_key_i2c)(struct i2c_client *ir, enum rc_proto *protocol,
74 u32 *scancode);
75 int (*get_key)(struct em28xx_IR *ir, struct em28xx_ir_poll_result *r);
76};
77
78
79
80
81
82static int em28xx_get_key_terratec(struct i2c_client *i2c_dev,
83 enum rc_proto *protocol, u32 *scancode)
84{
85 int rc;
86 unsigned char b;
87
88
89 rc = i2c_master_recv(i2c_dev, &b, 1);
90 if (rc != 1) {
91 if (rc < 0)
92 return rc;
93 return -EIO;
94 }
95
96
97
98
99
100
101 if (b == 0xff)
102 return 0;
103
104 if (b == 0xfe)
105
106 return 1;
107
108 *protocol = RC_PROTO_UNKNOWN;
109 *scancode = b;
110 return 1;
111}
112
113static int em28xx_get_key_em_haup(struct i2c_client *i2c_dev,
114 enum rc_proto *protocol, u32 *scancode)
115{
116 unsigned char buf[2];
117 int size;
118
119
120 size = i2c_master_recv(i2c_dev, buf, sizeof(buf));
121
122 if (size != 2)
123 return -EIO;
124
125
126 if (buf[1] == 0xff)
127 return 0;
128
129
130
131
132
133
134
135
136
137
138 *protocol = RC_PROTO_RC5;
139 *scancode = (bitrev8(buf[1]) & 0x1f) << 8 | bitrev8(buf[0]) >> 2;
140 return 1;
141}
142
143static int em28xx_get_key_pinnacle_usb_grey(struct i2c_client *i2c_dev,
144 enum rc_proto *protocol,
145 u32 *scancode)
146{
147 unsigned char buf[3];
148
149
150
151 if (i2c_master_recv(i2c_dev, buf, 3) != 3)
152 return -EIO;
153
154 if (buf[0] != 0x00)
155 return 0;
156
157 *protocol = RC_PROTO_UNKNOWN;
158 *scancode = buf[2] & 0x3f;
159 return 1;
160}
161
162static int em28xx_get_key_winfast_usbii_deluxe(struct i2c_client *i2c_dev,
163 enum rc_proto *protocol,
164 u32 *scancode)
165{
166 unsigned char subaddr, keydetect, key;
167
168 struct i2c_msg msg[] = {
169 {
170 .addr = i2c_dev->addr,
171 .flags = 0,
172 .buf = &subaddr, .len = 1
173 }, {
174 .addr = i2c_dev->addr,
175 .flags = I2C_M_RD,
176 .buf = &keydetect,
177 .len = 1
178 }
179 };
180
181 subaddr = 0x10;
182 if (i2c_transfer(i2c_dev->adapter, msg, 2) != 2)
183 return -EIO;
184 if (keydetect == 0x00)
185 return 0;
186
187 subaddr = 0x00;
188 msg[1].buf = &key;
189 if (i2c_transfer(i2c_dev->adapter, msg, 2) != 2)
190 return -EIO;
191 if (key == 0x00)
192 return 0;
193
194 *protocol = RC_PROTO_UNKNOWN;
195 *scancode = key;
196 return 1;
197}
198
199
200
201
202
203
204static int default_polling_getkey(struct em28xx_IR *ir,
205 struct em28xx_ir_poll_result *poll_result)
206{
207 struct em28xx *dev = ir->dev;
208 int rc;
209 u8 msg[3] = { 0, 0, 0 };
210
211
212
213
214
215 rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR,
216 msg, sizeof(msg));
217 if (rc < 0)
218 return rc;
219
220
221 poll_result->toggle_bit = (msg[0] >> 7);
222
223
224 poll_result->read_count = (msg[0] & 0x7f);
225
226
227 switch (ir->rc_proto) {
228 case RC_PROTO_BIT_RC5:
229 poll_result->protocol = RC_PROTO_RC5;
230 poll_result->scancode = RC_SCANCODE_RC5(msg[1], msg[2]);
231 break;
232
233 case RC_PROTO_BIT_NEC:
234 poll_result->protocol = RC_PROTO_NEC;
235 poll_result->scancode = RC_SCANCODE_NEC(msg[1], msg[2]);
236 break;
237
238 default:
239 poll_result->protocol = RC_PROTO_UNKNOWN;
240 poll_result->scancode = msg[1] << 8 | msg[2];
241 break;
242 }
243
244 return 0;
245}
246
247static int em2874_polling_getkey(struct em28xx_IR *ir,
248 struct em28xx_ir_poll_result *poll_result)
249{
250 struct em28xx *dev = ir->dev;
251 int rc;
252 u8 msg[5] = { 0, 0, 0, 0, 0 };
253
254
255
256
257
258 rc = dev->em28xx_read_reg_req_len(dev, 0, EM2874_R51_IR,
259 msg, sizeof(msg));
260 if (rc < 0)
261 return rc;
262
263
264 poll_result->toggle_bit = (msg[0] >> 7);
265
266
267 poll_result->read_count = (msg[0] & 0x7f);
268
269
270
271
272
273 switch (ir->rc_proto) {
274 case RC_PROTO_BIT_RC5:
275 poll_result->protocol = RC_PROTO_RC5;
276 poll_result->scancode = RC_SCANCODE_RC5(msg[1], msg[2]);
277 break;
278
279 case RC_PROTO_BIT_NEC:
280 poll_result->scancode = msg[1] << 8 | msg[2];
281 if ((msg[3] ^ msg[4]) != 0xff) {
282 poll_result->protocol = RC_PROTO_NEC32;
283 poll_result->scancode = RC_SCANCODE_NEC32((msg[1] << 24) |
284 (msg[2] << 16) |
285 (msg[3] << 8) |
286 (msg[4]));
287 } else if ((msg[1] ^ msg[2]) != 0xff) {
288 poll_result->protocol = RC_PROTO_NECX;
289 poll_result->scancode = RC_SCANCODE_NECX(msg[1] << 8 |
290 msg[2], msg[3]);
291 } else {
292 poll_result->protocol = RC_PROTO_NEC;
293 poll_result->scancode = RC_SCANCODE_NEC(msg[1], msg[3]);
294 }
295 break;
296
297 case RC_PROTO_BIT_RC6_0:
298 poll_result->protocol = RC_PROTO_RC6_0;
299 poll_result->scancode = RC_SCANCODE_RC6_0(msg[1], msg[2]);
300 break;
301
302 default:
303 poll_result->protocol = RC_PROTO_UNKNOWN;
304 poll_result->scancode = (msg[1] << 24) | (msg[2] << 16) |
305 (msg[3] << 8) | msg[4];
306 break;
307 }
308
309 return 0;
310}
311
312
313
314
315
316static int em28xx_i2c_ir_handle_key(struct em28xx_IR *ir)
317{
318 static u32 scancode;
319 enum rc_proto protocol;
320 int rc;
321
322 rc = ir->get_key_i2c(ir->i2c_client, &protocol, &scancode);
323 if (rc < 0) {
324 dprintk("ir->get_key_i2c() failed: %d\n", rc);
325 return rc;
326 }
327
328 if (rc) {
329 dprintk("%s: proto = 0x%04x, scancode = 0x%04x\n",
330 __func__, protocol, scancode);
331 rc_keydown(ir->rc, protocol, scancode, 0);
332 }
333 return 0;
334}
335
336static void em28xx_ir_handle_key(struct em28xx_IR *ir)
337{
338 int result;
339 struct em28xx_ir_poll_result poll_result;
340
341
342 result = ir->get_key(ir, &poll_result);
343 if (unlikely(result < 0)) {
344 dprintk("ir->get_key() failed: %d\n", result);
345 return;
346 }
347
348 if (unlikely(poll_result.read_count != ir->last_readcount)) {
349 dprintk("%s: toggle: %d, count: %d, key 0x%04x\n", __func__,
350 poll_result.toggle_bit, poll_result.read_count,
351 poll_result.scancode);
352 if (ir->full_code)
353 rc_keydown(ir->rc,
354 poll_result.protocol,
355 poll_result.scancode,
356 poll_result.toggle_bit);
357 else
358 rc_keydown(ir->rc,
359 RC_PROTO_UNKNOWN,
360 poll_result.scancode & 0xff,
361 poll_result.toggle_bit);
362
363 if (ir->dev->chip_id == CHIP_ID_EM2874 ||
364 ir->dev->chip_id == CHIP_ID_EM2884)
365
366
367
368
369
370
371
372
373 ir->last_readcount = 0;
374 else
375 ir->last_readcount = poll_result.read_count;
376 }
377}
378
379static void em28xx_ir_work(struct work_struct *work)
380{
381 struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work);
382
383 if (ir->i2c_client)
384 em28xx_i2c_ir_handle_key(ir);
385 else
386 em28xx_ir_handle_key(ir);
387 schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
388}
389
390static int em28xx_ir_start(struct rc_dev *rc)
391{
392 struct em28xx_IR *ir = rc->priv;
393
394 INIT_DELAYED_WORK(&ir->work, em28xx_ir_work);
395 schedule_delayed_work(&ir->work, 0);
396
397 return 0;
398}
399
400static void em28xx_ir_stop(struct rc_dev *rc)
401{
402 struct em28xx_IR *ir = rc->priv;
403
404 cancel_delayed_work_sync(&ir->work);
405}
406
407static int em2860_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_proto)
408{
409 struct em28xx_IR *ir = rc_dev->priv;
410 struct em28xx *dev = ir->dev;
411
412
413 if (*rc_proto & RC_PROTO_BIT_RC5) {
414 dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
415 ir->full_code = 1;
416 *rc_proto = RC_PROTO_BIT_RC5;
417 } else if (*rc_proto & RC_PROTO_BIT_NEC) {
418 dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;
419 ir->full_code = 1;
420 *rc_proto = RC_PROTO_BIT_NEC;
421 } else if (*rc_proto & RC_PROTO_BIT_UNKNOWN) {
422 *rc_proto = RC_PROTO_BIT_UNKNOWN;
423 } else {
424 *rc_proto = ir->rc_proto;
425 return -EINVAL;
426 }
427 em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,
428 EM28XX_XCLK_IR_RC5_MODE);
429
430 ir->rc_proto = *rc_proto;
431
432 return 0;
433}
434
435static int em2874_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_proto)
436{
437 struct em28xx_IR *ir = rc_dev->priv;
438 struct em28xx *dev = ir->dev;
439 u8 ir_config = EM2874_IR_RC5;
440
441
442 if (*rc_proto & RC_PROTO_BIT_RC5) {
443 dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
444 ir->full_code = 1;
445 *rc_proto = RC_PROTO_BIT_RC5;
446 } else if (*rc_proto & RC_PROTO_BIT_NEC) {
447 dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE;
448 ir_config = EM2874_IR_NEC | EM2874_IR_NEC_NO_PARITY;
449 ir->full_code = 1;
450 *rc_proto = RC_PROTO_BIT_NEC;
451 } else if (*rc_proto & RC_PROTO_BIT_RC6_0) {
452 dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE;
453 ir_config = EM2874_IR_RC6_MODE_0;
454 ir->full_code = 1;
455 *rc_proto = RC_PROTO_BIT_RC6_0;
456 } else if (*rc_proto & RC_PROTO_BIT_UNKNOWN) {
457 *rc_proto = RC_PROTO_BIT_UNKNOWN;
458 } else {
459 *rc_proto = ir->rc_proto;
460 return -EINVAL;
461 }
462 em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1);
463 em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk,
464 EM28XX_XCLK_IR_RC5_MODE);
465
466 ir->rc_proto = *rc_proto;
467
468 return 0;
469}
470
471static int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 *rc_proto)
472{
473 struct em28xx_IR *ir = rc_dev->priv;
474 struct em28xx *dev = ir->dev;
475
476
477 switch (dev->chip_id) {
478 case CHIP_ID_EM2860:
479 case CHIP_ID_EM2883:
480 return em2860_ir_change_protocol(rc_dev, rc_proto);
481 case CHIP_ID_EM2884:
482 case CHIP_ID_EM2874:
483 case CHIP_ID_EM28174:
484 case CHIP_ID_EM28178:
485 return em2874_ir_change_protocol(rc_dev, rc_proto);
486 default:
487 dev_err(&ir->dev->intf->dev,
488 "Unrecognized em28xx chip id 0x%02x: IR not supported\n",
489 dev->chip_id);
490 return -EINVAL;
491 }
492}
493
494static int em28xx_probe_i2c_ir(struct em28xx *dev)
495{
496 int i = 0;
497
498
499
500
501
502 const unsigned short addr_list[] = {
503 0x1f, 0x30, 0x47, I2C_CLIENT_END
504 };
505
506 while (addr_list[i] != I2C_CLIENT_END) {
507 if (i2c_probe_func_quick_read(&dev->i2c_adap[dev->def_i2c_bus],
508 addr_list[i]) == 1)
509 return addr_list[i];
510 i++;
511 }
512
513 return -ENODEV;
514}
515
516
517
518
519
520static void em28xx_query_buttons(struct work_struct *work)
521{
522 struct em28xx *dev =
523 container_of(work, struct em28xx, buttons_query_work.work);
524 u8 i, j;
525 int regval;
526 bool is_pressed, was_pressed;
527 const struct em28xx_led *led;
528
529
530 for (i = 0; i < dev->num_button_polling_addresses; i++) {
531
532 regval = em28xx_read_reg(dev, dev->button_polling_addresses[i]);
533 if (regval < 0)
534 continue;
535
536 j = 0;
537 while (dev->board.buttons[j].role >= 0 &&
538 dev->board.buttons[j].role < EM28XX_NUM_BUTTON_ROLES) {
539 const struct em28xx_button *button;
540
541 button = &dev->board.buttons[j];
542
543
544 if (button->reg_r != dev->button_polling_addresses[i]) {
545 j++;
546 continue;
547 }
548
549 is_pressed = regval & button->mask;
550 was_pressed = dev->button_polling_last_values[i]
551 & button->mask;
552 if (button->inverted) {
553 is_pressed = !is_pressed;
554 was_pressed = !was_pressed;
555 }
556
557 if (is_pressed && button->reg_clearing)
558 em28xx_write_reg(dev, button->reg_clearing,
559 (~regval & button->mask)
560 | (regval & ~button->mask));
561
562 if (!is_pressed || was_pressed) {
563 j++;
564 continue;
565 }
566 switch (button->role) {
567 case EM28XX_BUTTON_SNAPSHOT:
568
569 input_report_key(dev->sbutton_input_dev,
570 EM28XX_SNAPSHOT_KEY, 1);
571
572 input_report_key(dev->sbutton_input_dev,
573 EM28XX_SNAPSHOT_KEY, 0);
574 break;
575 case EM28XX_BUTTON_ILLUMINATION:
576 led = em28xx_find_led(dev,
577 EM28XX_LED_ILLUMINATION);
578
579 if (led)
580 em28xx_toggle_reg_bits(dev,
581 led->gpio_reg,
582 led->gpio_mask);
583 break;
584 default:
585 WARN_ONCE(1, "BUG: unhandled button role.");
586 }
587
588 j++;
589 }
590
591 dev->button_polling_last_values[i] = regval;
592 }
593
594 schedule_delayed_work(&dev->buttons_query_work,
595 msecs_to_jiffies(dev->button_polling_interval));
596}
597
598static int em28xx_register_snapshot_button(struct em28xx *dev)
599{
600 struct usb_device *udev = interface_to_usbdev(dev->intf);
601 struct input_dev *input_dev;
602 int err;
603
604 dev_info(&dev->intf->dev, "Registering snapshot button...\n");
605 input_dev = input_allocate_device();
606 if (!input_dev)
607 return -ENOMEM;
608
609 usb_make_path(udev, dev->snapshot_button_path,
610 sizeof(dev->snapshot_button_path));
611 strlcat(dev->snapshot_button_path, "/sbutton",
612 sizeof(dev->snapshot_button_path));
613
614 input_dev->name = "em28xx snapshot button";
615 input_dev->phys = dev->snapshot_button_path;
616 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
617 set_bit(EM28XX_SNAPSHOT_KEY, input_dev->keybit);
618 input_dev->keycodesize = 0;
619 input_dev->keycodemax = 0;
620 input_dev->id.bustype = BUS_USB;
621 input_dev->id.vendor = le16_to_cpu(udev->descriptor.idVendor);
622 input_dev->id.product = le16_to_cpu(udev->descriptor.idProduct);
623 input_dev->id.version = 1;
624 input_dev->dev.parent = &dev->intf->dev;
625
626 err = input_register_device(input_dev);
627 if (err) {
628 dev_err(&dev->intf->dev, "input_register_device failed\n");
629 input_free_device(input_dev);
630 return err;
631 }
632
633 dev->sbutton_input_dev = input_dev;
634 return 0;
635}
636
637static void em28xx_init_buttons(struct em28xx *dev)
638{
639 u8 i = 0, j = 0;
640 bool addr_new = false;
641
642 dev->button_polling_interval = EM28XX_BUTTONS_DEBOUNCED_QUERY_INTERVAL;
643 while (dev->board.buttons[i].role >= 0 &&
644 dev->board.buttons[i].role < EM28XX_NUM_BUTTON_ROLES) {
645 const struct em28xx_button *button = &dev->board.buttons[i];
646
647
648 addr_new = true;
649 for (j = 0; j < dev->num_button_polling_addresses; j++) {
650 if (button->reg_r == dev->button_polling_addresses[j]) {
651 addr_new = false;
652 break;
653 }
654 }
655
656 if (addr_new && dev->num_button_polling_addresses
657 >= EM28XX_NUM_BUTTON_ADDRESSES_MAX) {
658 WARN_ONCE(1, "BUG: maximum number of button polling addresses exceeded.");
659 goto next_button;
660 }
661
662 if (button->role == EM28XX_BUTTON_SNAPSHOT) {
663
664 if (em28xx_register_snapshot_button(dev) < 0)
665 goto next_button;
666 } else if (button->role == EM28XX_BUTTON_ILLUMINATION) {
667
668 if (!em28xx_find_led(dev, EM28XX_LED_ILLUMINATION)) {
669 dev_err(&dev->intf->dev,
670 "BUG: illumination button defined, but no illumination LED.\n");
671 goto next_button;
672 }
673 }
674
675 if (addr_new) {
676 unsigned int index = dev->num_button_polling_addresses;
677
678 dev->button_polling_addresses[index] = button->reg_r;
679 dev->num_button_polling_addresses++;
680 }
681
682 if (!button->reg_clearing)
683 dev->button_polling_interval =
684 EM28XX_BUTTONS_VOLATILE_QUERY_INTERVAL;
685next_button:
686
687 i++;
688 }
689
690
691 if (dev->num_button_polling_addresses) {
692 memset(dev->button_polling_last_values, 0,
693 EM28XX_NUM_BUTTON_ADDRESSES_MAX);
694 schedule_delayed_work(&dev->buttons_query_work,
695 msecs_to_jiffies(dev->button_polling_interval));
696 }
697}
698
699static void em28xx_shutdown_buttons(struct em28xx *dev)
700{
701
702 cancel_delayed_work_sync(&dev->buttons_query_work);
703
704 dev->num_button_polling_addresses = 0;
705
706 if (dev->sbutton_input_dev) {
707 dev_info(&dev->intf->dev, "Deregistering snapshot button\n");
708 input_unregister_device(dev->sbutton_input_dev);
709 dev->sbutton_input_dev = NULL;
710 }
711}
712
713static int em28xx_ir_init(struct em28xx *dev)
714{
715 struct usb_device *udev = interface_to_usbdev(dev->intf);
716 struct em28xx_IR *ir;
717 struct rc_dev *rc;
718 int err = -ENOMEM;
719 u64 rc_proto;
720 u16 i2c_rc_dev_addr = 0;
721
722 if (dev->is_audio_only) {
723
724 return 0;
725 }
726
727 kref_get(&dev->ref);
728 INIT_DELAYED_WORK(&dev->buttons_query_work, em28xx_query_buttons);
729
730 if (dev->board.buttons)
731 em28xx_init_buttons(dev);
732
733 if (dev->board.has_ir_i2c) {
734 i2c_rc_dev_addr = em28xx_probe_i2c_ir(dev);
735 if (!i2c_rc_dev_addr) {
736 dev->board.has_ir_i2c = 0;
737 dev_warn(&dev->intf->dev,
738 "No i2c IR remote control device found.\n");
739 return -ENODEV;
740 }
741 }
742
743 if (!dev->board.ir_codes && !dev->board.has_ir_i2c) {
744
745 dev_warn(&dev->intf->dev,
746 "Remote control support is not available for this card.\n");
747 return 0;
748 }
749
750 dev_info(&dev->intf->dev, "Registering input extension\n");
751
752 ir = kzalloc(sizeof(*ir), GFP_KERNEL);
753 if (!ir)
754 return -ENOMEM;
755 rc = rc_allocate_device(RC_DRIVER_SCANCODE);
756 if (!rc)
757 goto error;
758
759
760 ir->dev = dev;
761 dev->ir = ir;
762 ir->rc = rc;
763
764 rc->priv = ir;
765 rc->open = em28xx_ir_start;
766 rc->close = em28xx_ir_stop;
767
768 if (dev->board.has_ir_i2c) {
769 switch (dev->model) {
770 case EM2800_BOARD_TERRATEC_CINERGY_200:
771 case EM2820_BOARD_TERRATEC_CINERGY_250:
772 rc->map_name = RC_MAP_EM_TERRATEC;
773 ir->get_key_i2c = em28xx_get_key_terratec;
774 break;
775 case EM2820_BOARD_PINNACLE_USB_2:
776 rc->map_name = RC_MAP_PINNACLE_GREY;
777 ir->get_key_i2c = em28xx_get_key_pinnacle_usb_grey;
778 break;
779 case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2:
780 rc->map_name = RC_MAP_HAUPPAUGE;
781 ir->get_key_i2c = em28xx_get_key_em_haup;
782 rc->allowed_protocols = RC_PROTO_BIT_RC5;
783 break;
784 case EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE:
785 rc->map_name = RC_MAP_WINFAST_USBII_DELUXE;
786 ir->get_key_i2c = em28xx_get_key_winfast_usbii_deluxe;
787 break;
788 default:
789 err = -ENODEV;
790 goto error;
791 }
792
793 ir->i2c_client = kzalloc(sizeof(*ir->i2c_client), GFP_KERNEL);
794 if (!ir->i2c_client)
795 goto error;
796 ir->i2c_client->adapter = &ir->dev->i2c_adap[dev->def_i2c_bus];
797 ir->i2c_client->addr = i2c_rc_dev_addr;
798 ir->i2c_client->flags = 0;
799
800 } else {
801 switch (dev->chip_id) {
802 case CHIP_ID_EM2860:
803 case CHIP_ID_EM2883:
804 rc->allowed_protocols = RC_PROTO_BIT_RC5 |
805 RC_PROTO_BIT_NEC;
806 ir->get_key = default_polling_getkey;
807 break;
808 case CHIP_ID_EM2884:
809 case CHIP_ID_EM2874:
810 case CHIP_ID_EM28174:
811 case CHIP_ID_EM28178:
812 ir->get_key = em2874_polling_getkey;
813 rc->allowed_protocols = RC_PROTO_BIT_RC5 |
814 RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX |
815 RC_PROTO_BIT_NEC32 | RC_PROTO_BIT_RC6_0;
816 break;
817 default:
818 err = -ENODEV;
819 goto error;
820 }
821
822 rc->change_protocol = em28xx_ir_change_protocol;
823 rc->map_name = dev->board.ir_codes;
824
825
826 rc_proto = RC_PROTO_BIT_UNKNOWN;
827 err = em28xx_ir_change_protocol(rc, &rc_proto);
828 if (err)
829 goto error;
830 }
831
832
833 ir->polling = 100;
834
835
836 snprintf(ir->name, sizeof(ir->name), "%s IR",
837 dev_name(&dev->intf->dev));
838
839 usb_make_path(udev, ir->phys, sizeof(ir->phys));
840 strlcat(ir->phys, "/input0", sizeof(ir->phys));
841
842 rc->device_name = ir->name;
843 rc->input_phys = ir->phys;
844 rc->input_id.bustype = BUS_USB;
845 rc->input_id.version = 1;
846 rc->input_id.vendor = le16_to_cpu(udev->descriptor.idVendor);
847 rc->input_id.product = le16_to_cpu(udev->descriptor.idProduct);
848 rc->dev.parent = &dev->intf->dev;
849 rc->driver_name = MODULE_NAME;
850
851
852 err = rc_register_device(rc);
853 if (err)
854 goto error;
855
856 dev_info(&dev->intf->dev, "Input extension successfully initialized\n");
857
858 return 0;
859
860error:
861 kfree(ir->i2c_client);
862 dev->ir = NULL;
863 rc_free_device(rc);
864 kfree(ir);
865 return err;
866}
867
868static int em28xx_ir_fini(struct em28xx *dev)
869{
870 struct em28xx_IR *ir = dev->ir;
871
872 if (dev->is_audio_only) {
873
874 return 0;
875 }
876
877 dev_info(&dev->intf->dev, "Closing input extension\n");
878
879 em28xx_shutdown_buttons(dev);
880
881
882 if (!ir)
883 goto ref_put;
884
885 rc_unregister_device(ir->rc);
886
887 kfree(ir->i2c_client);
888
889
890 kfree(ir);
891 dev->ir = NULL;
892
893ref_put:
894 kref_put(&dev->ref, em28xx_free_device);
895
896 return 0;
897}
898
899static int em28xx_ir_suspend(struct em28xx *dev)
900{
901 struct em28xx_IR *ir = dev->ir;
902
903 if (dev->is_audio_only)
904 return 0;
905
906 dev_info(&dev->intf->dev, "Suspending input extension\n");
907 if (ir)
908 cancel_delayed_work_sync(&ir->work);
909 cancel_delayed_work_sync(&dev->buttons_query_work);
910
911
912
913
914
915 return 0;
916}
917
918static int em28xx_ir_resume(struct em28xx *dev)
919{
920 struct em28xx_IR *ir = dev->ir;
921
922 if (dev->is_audio_only)
923 return 0;
924
925 dev_info(&dev->intf->dev, "Resuming input extension\n");
926
927
928
929
930 if (ir)
931 schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
932 if (dev->num_button_polling_addresses)
933 schedule_delayed_work(&dev->buttons_query_work,
934 msecs_to_jiffies(dev->button_polling_interval));
935 return 0;
936}
937
938static struct em28xx_ops rc_ops = {
939 .id = EM28XX_RC,
940 .name = "Em28xx Input Extension",
941 .init = em28xx_ir_init,
942 .fini = em28xx_ir_fini,
943 .suspend = em28xx_ir_suspend,
944 .resume = em28xx_ir_resume,
945};
946
947static int __init em28xx_rc_register(void)
948{
949 return em28xx_register_extension(&rc_ops);
950}
951
952static void __exit em28xx_rc_unregister(void)
953{
954 em28xx_unregister_extension(&rc_ops);
955}
956
957MODULE_LICENSE("GPL v2");
958MODULE_AUTHOR("Mauro Carvalho Chehab");
959MODULE_DESCRIPTION(DRIVER_DESC " - input interface");
960MODULE_VERSION(EM28XX_VERSION);
961
962module_init(em28xx_rc_register);
963module_exit(em28xx_rc_unregister);
964