aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/dvb/dvb-usb/it913x.c
blob: 3b7b102f20ae076fe5033092db4333dfbcdbb8fe (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
/* DVB USB compliant linux driver for IT9137
 *
 * Copyright (C) 2011 Malcolm Priestley (tvboxspy@gmail.com)
 * IT9137 (C) ITE Tech Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License Version 2, as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * see Documentation/dvb/README.dvb-usb for more information
 * see Documentation/dvb/it9137.txt for firmware information
 *
 */
#define DVB_USB_LOG_PREFIX "it913x"

#include <linux/usb.h>
#include <linux/usb/input.h>
#include <media/rc-core.h>

#include "dvb-usb.h"
#include "it913x-fe.h"

/* debug */
static int dvb_usb_it913x_debug;
#define l_dprintk(var, level, args...) do { \
	if ((var >= level)) \
		printk(KERN_DEBUG DVB_USB_LOG_PREFIX ": " args); \
} while (0)

#define deb_info(level, args...) l_dprintk(dvb_usb_it913x_debug, level, args)
#define debug_data_snipet(level, name, p) \
	 deb_info(level, name" (%02x%02x%02x%02x%02x%02x%02x%02x)", \
		*p, *(p+1), *(p+2), *(p+3), *(p+4), \
			*(p+5), *(p+6), *(p+7));


module_param_named(debug, dvb_usb_it913x_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able))."
			DVB_USB_DEBUG_STATUS);

static int pid_filter;
module_param_named(pid, pid_filter, int, 0644);
MODULE_PARM_DESC(pid, "set default 0=on 1=off");

static int dvb_usb_it913x_firmware;
module_param_named(firmware, dvb_usb_it913x_firmware, int, 0644);
MODULE_PARM_DESC(firmware, "set firmware 0=auto 1=IT9137 2=IT9135V1");


int cmd_counter;

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

struct it913x_state {
	u8 id;
	struct ite_config it913x_config;
	u8 pid_filter_onoff;
};

struct ite_config it913x_config;

#define IT913X_RETRY	10
#define IT913X_SND_TIMEOUT	100
#define IT913X_RCV_TIMEOUT	200

static int it913x_bulk_write(struct usb_device *dev,
				u8 *snd, int len, u8 pipe)
{
	int ret, actual_l, i;

	for (i = 0; i < IT913X_RETRY; i++) {
		ret = usb_bulk_msg(dev, usb_sndbulkpipe(dev, pipe),
				snd, len , &actual_l, IT913X_SND_TIMEOUT);
		if (ret == 0 || ret != -EBUSY || ret != -ETIMEDOUT)
			break;
	}

	if (len != actual_l && ret == 0)
		ret = -EAGAIN;

	return ret;
}

static int it913x_bulk_read(struct usb_device *dev,
				u8 *rev, int len, u8 pipe)
{
	int ret, actual_l, i;

	for (i = 0; i < IT913X_RETRY; i++) {
		ret = usb_bulk_msg(dev, usb_rcvbulkpipe(dev, pipe),
				 rev, len , &actual_l, IT913X_RCV_TIMEOUT);
		if (ret == 0 || ret != -EBUSY || ret != -ETIMEDOUT)
			break;
	}

	if (len != actual_l && ret == 0)
		ret = -EAGAIN;

	return ret;
}

static u16 check_sum(u8 *p, u8 len)
{
	u16 sum = 0;
	u8 i = 1;
	while (i < len)
		sum += (i++ & 1) ? (*p++) << 8 : *p++;
	return ~sum;
}

static int it913x_usb_talk(struct usb_device *udev, u8 mode, u8 pro,
			u8 cmd, u32 reg, u8 addr, u8 *data, u8 len)
{
	int ret = 0, i, buf_size = 1;
	u8 *buff;
	u8 rlen;
	u16 chk_sum;

	buff = kzalloc(256, GFP_KERNEL);
	if (!buff) {
		info("USB Buffer Failed");
		return -ENOMEM;
	}

	buff[buf_size++] = pro;
	buff[buf_size++] = cmd;
	buff[buf_size++] = cmd_counter;

	switch (mode) {
	case READ_LONG:
	case WRITE_LONG:
		buff[buf_size++] = len;
		buff[buf_size++] = 2;
		buff[buf_size++] = (reg >> 24);
		buff[buf_size++] = (reg >> 16) & 0xff;
		buff[buf_size++] = (reg >> 8) & 0xff;
		buff[buf_size++] = reg & 0xff;
	break;
	case READ_SHORT:
		buff[buf_size++] = addr;
		break;
	case WRITE_SHORT:
		buff[buf_size++] = len;
		buff[buf_size++] = addr;
		buff[buf_size++] = (reg >> 8) & 0xff;
		buff[buf_size++] = reg & 0xff;
	break;
	case READ_DATA:
	case WRITE_DATA:
		break;
	case WRITE_CMD:
		mode = 7;
		break;
	default:
		kfree(buff);
		return -EINVAL;
	}

	if (mode & 1) {
		for (i = 0; i < len ; i++)
			buff[buf_size++] = data[i];
	}
	chk_sum = check_sum(&buff[1], buf_size);

	buff[buf_size++] = chk_sum >> 8;
	buff[0] = buf_size;
	buff[buf_size++] = (chk_sum & 0xff);

	ret = it913x_bulk_write(udev, buff, buf_size , 0x02);
	if (ret < 0)
		goto error;

	ret = it913x_bulk_read(udev, buff, (mode & 1) ?
			5 : len + 5 , 0x01);
	if (ret < 0)
		goto error;

	rlen = (mode & 0x1) ? 0x1 : len;

	if (mode & 1)
		ret = buff[2];
	else
		memcpy(data, &buff[3], rlen);

	cmd_counter++;

error:	kfree(buff);

	return ret;
}

static int it913x_io(struct usb_device *udev, u8 mode, u8 pro,
			u8 cmd, u32 reg, u8 addr, u8 *data, u8 len)
{
	int ret, i;

	for (i = 0; i < IT913X_RETRY; i++) {
		ret = it913x_usb_talk(udev, mode, pro,
			cmd, reg, addr, data, len);
		if (ret != -EAGAIN)
			break;
	}

	return ret;
}

static int it913x_wr_reg(struct usb_device *udev, u8 pro, u32 reg , u8 data)
{
	int ret;
	u8 b[1];
	b[0] = data;
	ret = it913x_io(udev, WRITE_LONG, pro,
			CMD_DEMOD_WRITE, reg, 0, b, sizeof(b));

	return ret;
}

static int it913x_read_reg(struct usb_device *udev, u32 reg)
{
	int ret;
	u8 data[1];

	ret = it913x_io(udev, READ_LONG, DEV_0,
			CMD_DEMOD_READ, reg, 0, &data[0], 1);

	return (ret < 0) ? ret : data[0];
}

static u32 it913x_query(struct usb_device *udev, u8 pro)
{
	int ret;
	u8 data[4];
	ret = it913x_io(udev, READ_LONG, pro, CMD_DEMOD_READ,
		0x1222, 0, &data[0], 3);

	it913x_config.chip_ver = data[0];
	it913x_config.chip_type = (u16)(data[2] << 8) + data[1];

	info("Chip Version=%02x Chip Type=%04x", it913x_config.chip_ver,
		it913x_config.chip_type);

	ret |= it913x_io(udev, READ_SHORT, pro,
			CMD_QUERYINFO, 0, 0x1, &data[0], 4);

	it913x_config.firmware = (data[0] << 24) + (data[1] << 16) +
			(data[2] << 8) + data[3];

	return (ret < 0) ? 0 : it913x_config.firmware;
}

static int it913x_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
	struct it913x_state *st = adap->dev->priv;
	struct usb_device *udev = adap->dev->udev;
	int ret;
	u8 pro = (adap->id == 0) ? DEV_0_DMOD : DEV_1_DMOD;

	mutex_lock(&adap->dev->i2c_mutex);

	deb_info(1, "PID_C  (%02x)", onoff);

	ret = it913x_wr_reg(udev, pro, PID_EN, st->pid_filter_onoff);

	mutex_unlock(&adap->dev->i2c_mutex);
	return ret;
}

static int it913x_pid_filter(struct dvb_usb_adapter *adap,
		int index, u16 pid, int onoff)
{
	struct it913x_state *st = adap->dev->priv;
	struct usb_device *udev = adap->dev->udev;
	int ret;
	u8 pro = (adap->id == 0) ? DEV_0_DMOD : DEV_1_DMOD;

	mutex_lock(&adap->dev->i2c_mutex);

	deb_info(1, "PID_F  (%02x)", onoff);

	ret = it913x_wr_reg(udev, pro, PID_LSB, (u8)(pid & 0xff));

	ret |= it913x_wr_reg(udev, pro, PID_MSB, (u8)(pid >> 8));

	ret |= it913x_wr_reg(udev, pro, PID_INX_EN, (u8)onoff);

	ret |= it913x_wr_reg(udev, pro, PID_INX, (u8)(index & 0x1f));

	if (udev->speed == USB_SPEED_HIGH && pid == 0x2000) {
			ret |= it913x_wr_reg(udev, pro, PID_EN, !onoff);
			st->pid_filter_onoff = !onoff;
	} else
		st->pid_filter_onoff =
			adap->fe_adap[adap->active_fe].pid_filtering;

	mutex_unlock(&adap->dev->i2c_mutex);
	return 0;
}


static int it913x_return_status(struct usb_device *udev)
{
	u32 firm = 0;

	firm = it913x_query(udev, DEV_0);
	if (firm > 0)
		info("Firmware Version %d", firm);

	return (firm > 0) ? firm : 0;
}

static int it913x_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
				 int num)
{
	struct dvb_usb_device *d = i2c_get_adapdata(adap);
	static u8 data[256];
	int ret;
	u32 reg;
	u8 pro;

	mutex_lock(&d->i2c_mutex);

	debug_data_snipet(1, "Message out", msg[0].buf);
	deb_info(2, "num of messages %d address %02x", num, msg[0].addr);

	pro = (msg[0].addr & 0x2) ?  DEV_0_DMOD : 0x0;
	pro |= (msg[0].addr & 0x20) ? DEV_1 : DEV_0;
	memcpy(data, msg[0].buf, msg[0].len);
	reg = (data[0] << 24) + (data[1] << 16) +
			(data[2] << 8) + data[3];
	if (num == 2) {
		ret = it913x_io(d->udev, READ_LONG, pro,
			CMD_DEMOD_READ, reg, 0, data, msg[1].len);
		memcpy(msg[1].buf, data, msg[1].len);
	} else
		ret = it913x_io(d->udev, WRITE_LONG, pro, CMD_DEMOD_WRITE,
			reg, 0, &data[4], msg[0].len - 4);

	mutex_unlock(&d->i2c_mutex);

	return ret;
}

static u32 it913x_i2c_func(struct i2c_adapter *adapter)
{
	return I2C_FUNC_I2C;
}

static struct i2c_algorithm it913x_i2c_algo = {
	.master_xfer   = it913x_i2c_xfer,
	.functionality = it913x_i2c_func,
};

/* Callbacks for DVB USB */
#define IT913X_POLL 250
static int it913x_rc_query(struct dvb_usb_device *d)
{
	u8 ibuf[4];
	int ret;
	u32 key;
	/* Avoid conflict with frontends*/
	mutex_lock(&d->i2c_mutex);

	ret = it913x_io(d->udev, READ_LONG, PRO_LINK, CMD_IR_GET,
		0, 0, &ibuf[0], sizeof(ibuf));

	if ((ibuf[2] + ibuf[3]) == 0xff) {
		key = ibuf[2];
		key += ibuf[0] << 16;
		key += ibuf[1] << 8;
		deb_info(1, "NEC Extended Key =%08x", key);
		if (d->rc_dev != NULL)
			rc_keydown(d->rc_dev, key, 0);
	}

	mutex_unlock(&d->i2c_mutex);

	return ret;
}

/* Firmware sets raw */
const char fw_it9135_v1[] = "dvb-usb-it9135-01.fw";
const char fw_it9135_v2[] = "dvb-usb-it9135-02.fw";
const char fw_it9137[] = "dvb-usb-it9137-01.fw";

static int ite_firmware_select(struct usb_device *udev,
	struct dvb_usb_device_properties *props)
{
	int sw;
	/* auto switch */
	if (le16_to_cpu(udev->descriptor.idVendor) == USB_VID_KWORLD_2)
		sw = IT9137_FW;
	else if (it913x_config.chip_ver == 1)
		sw = IT9135_V1_FW;
	else
		sw = IT9135_V2_FW;

	/* force switch */
	if (dvb_usb_it913x_firmware != IT9135_AUTO)
		sw = dvb_usb_it913x_firmware;

	switch (sw) {
	case IT9135_V1_FW:
		it913x_config.firmware_ver = 1;
		it913x_config.adc_x2 = 1;
		it913x_config.read_slevel = false;
		props->firmware = fw_it9135_v1;
		break;
	case IT9135_V2_FW:
		it913x_config.firmware_ver = 1;
		it913x_config.adc_x2 = 1;
		it913x_config.read_slevel = false;
		props->firmware = fw_it9135_v2;
		switch (it913x_config.tuner_id_0) {
		case IT9135_61:
		case IT9135_62:
			break;
		default:
			info("Unknown tuner ID applying default 0x60");
		case IT9135_60:
			it913x_config.tuner_id_0 = IT9135_60;
		}
		break;
	case IT9137_FW:
	default:
		it913x_config.firmware_ver = 0;
		it913x_config.adc_x2 = 0;
		it913x_config.read_slevel = true;
		props->firmware = fw_it9137;
	}

	return 0;
}

static void it913x_select_remote(struct usb_device *udev,
	struct dvb_usb_device_properties *props)
{
	switch (le16_to_cpu(udev->descriptor.idProduct)) {
	case USB_PID_ITETECH_IT9135_9005:
		props->rc.core.rc_codes = RC_MAP_IT913X_V2;
		return;
	default:
		props->rc.core.rc_codes = RC_MAP_IT913X_V1;
	}
	return;
}

#define TS_MPEG_PKT_SIZE	188
#define EP_LOW			21
#define TS_BUFFER_SIZE_PID	(EP_LOW*TS_MPEG_PKT_SIZE)
#define EP_HIGH			348
#define TS_BUFFER_SIZE_MAX	(EP_HIGH*TS_MPEG_PKT_SIZE)

static int it913x_select_config(struct usb_device *udev,
	struct dvb_usb_device_properties *props)
{
	int ret = 0, reg;
	bool proprietary_ir = false;

	if (it913x_config.chip_ver == 0x02
			&& it913x_config.chip_type == 0x9135)
		reg = it913x_read_reg(udev, 0x461d);
	else
		reg = it913x_read_reg(udev, 0x461b);

	if (reg < 0)
		return reg;

	if (reg == 0) {
		it913x_config.dual_mode = 0;
		it913x_config.tuner_id_0 = IT9135_38;
		proprietary_ir = true;
	} else {
		/* TS mode */
		reg =  it913x_read_reg(udev, 0x49c5);
		if (reg < 0)
			return reg;
		it913x_config.dual_mode = reg;

		/* IR mode type */
		reg = it913x_read_reg(udev, 0x49ac);
		if (reg < 0)
			return reg;
		if (reg == 5) {
			info("Remote propriety (raw) mode");
			proprietary_ir = true;
		} else if (reg == 1) {
			info("Remote HID mode NOT SUPPORTED");
			proprietary_ir = false;
			props->rc.core.rc_codes = NULL;
		} else
			props->rc.core.rc_codes = NULL;

		/* Tuner_id */
		reg = it913x_read_reg(udev, 0x49d0);
		if (reg < 0)
			return reg;
		it913x_config.tuner_id_0 = reg;
	}

	if (proprietary_ir)
		it913x_select_remote(udev, props);

	if (udev->speed != USB_SPEED_HIGH) {
		props->adapter[0].fe[0].pid_filter_count = 5;
		info("USB 1 low speed mode - connect to USB 2 port");
		if (pid_filter > 0)
			pid_filter = 0;
		if (it913x_config.dual_mode) {
			it913x_config.dual_mode = 0;
			info("Dual mode not supported in USB 1");
		}
	} else /* For replugging */
		if(props->adapter[0].fe[0].pid_filter_count == 5)
			props->adapter[0].fe[0].pid_filter_count = 31;

	/* Select Stream Buffer Size and pid filter option*/
	if (pid_filter) {
		props->adapter[0].fe[0].stream.u.bulk.buffersize =
			TS_BUFFER_SIZE_MAX;
		props->adapter[0].fe[0].caps &=
			~DVB_USB_ADAP_NEED_PID_FILTERING;
	} else
		props->adapter[0].fe[0].stream.u.bulk.buffersize =
			TS_BUFFER_SIZE_PID;

	if (it913x_config.dual_mode) {
		props->adapter[1].fe[0].stream.u.bulk.buffersize =
			props->adapter[0].fe[0].stream.u.bulk.buffersize;
		props->num_adapters = 2;
		if (pid_filter)
			props->adapter[1].fe[0].caps =
				props->adapter[0].fe[0].caps;
	} else
		props->num_adapters = 1;

	info("Dual mode=%x Tuner Type=%x", it913x_config.dual_mode,
		it913x_config.tuner_id_0);

	ret = ite_firmware_select(udev, props);

	return ret;
}

static int it913x_identify_state(struct usb_device *udev,
		struct dvb_usb_device_properties *props,
		struct dvb_usb_device_description **desc,
		int *cold)
{
	int ret = 0, firm_no;
	u8 reg;

	firm_no = it913x_return_status(udev);

	/* Read and select config */
	ret = it913x_select_config(udev, props);
	if (ret < 0)
		return ret;

	if (firm_no > 0) {
		*cold = 0;
		return 0;
	}

	if (it913x_config.dual_mode) {
		it913x_config.tuner_id_1 = it913x_read_reg(udev, 0x49e0);
		ret = it913x_wr_reg(udev, DEV_0, GPIOH1_EN, 0x1);
		ret |= it913x_wr_reg(udev, DEV_0, GPIOH1_ON, 0x1);
		ret |= it913x_wr_reg(udev, DEV_0, GPIOH1_O, 0x1);
		msleep(50);
		ret |= it913x_wr_reg(udev, DEV_0, GPIOH1_O, 0x0);
		msleep(50);
		reg = it913x_read_reg(udev, GPIOH1_O);
		if (reg == 0) {
			ret |= it913x_wr_reg(udev, DEV_0,  GPIOH1_O, 0x1);
			ret |= it913x_return_status(udev);
			if (ret != 0)
				ret = it913x_wr_reg(udev, DEV_0,
					GPIOH1_O, 0x0);
		}
	}

	reg = it913x_read_reg(udev, IO_MUX_POWER_CLK);

	if (it913x_config.dual_mode) {
		ret |= it913x_wr_reg(udev, DEV_0, 0x4bfb, CHIP2_I2C_ADDR);
		if (it913x_config.firmware_ver == 1)
			ret |= it913x_wr_reg(udev, DEV_0,  0xcfff, 0x1);
		else
			ret |= it913x_wr_reg(udev, DEV_0,  CLK_O_EN, 0x1);
	} else {
		ret |= it913x_wr_reg(udev, DEV_0, 0x4bfb, 0x0);
		if (it913x_config.firmware_ver == 1)
			ret |= it913x_wr_reg(udev, DEV_0,  0xcfff, 0x0);
		else
			ret |= it913x_wr_reg(udev, DEV_0,  CLK_O_EN, 0x0);
	}

	*cold = 1;

	return (ret < 0) ? -ENODEV : 0;
}

static int it913x_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
{
	struct it913x_state *st = adap->dev->priv;
	int ret = 0;
	u8 pro = (adap->id == 0) ? DEV_0_DMOD : DEV_1_DMOD;

	deb_info(1, "STM  (%02x)", onoff);

	if (!onoff) {
		mutex_lock(&adap->dev->i2c_mutex);

		ret = it913x_wr_reg(adap->dev->udev, pro, PID_RST, 0x1);

		mutex_unlock(&adap->dev->i2c_mutex);
		st->pid_filter_onoff =
			adap->fe_adap[adap->active_fe].pid_filtering;

	}

	return ret;
}

static int it913x_download_firmware(struct usb_device *udev,
					const struct firmware *fw)
{
	int ret = 0, i = 0, pos = 0;
	u8 packet_size, min_pkt;
	u8 *fw_data;

	ret = it913x_wr_reg(udev, DEV_0,  I2C_CLK, I2C_CLK_100);

	info("FRM Starting Firmware Download");

	/* Multi firmware loader */
	/* This uses scatter write firmware headers */
	/* The firmware must start with 03 XX 00 */
	/* and be the extact firmware length */

	if (it913x_config.chip_ver == 2)
		min_pkt = 0x11;
	else
		min_pkt = 0x19;

	while (i <= fw->size) {
		if (((fw->data[i] == 0x3) && (fw->data[i + 2] == 0x0))
			|| (i == fw->size)) {
			packet_size = i - pos;
			if ((packet_size > min_pkt) || (i == fw->size)) {
				fw_data = (u8 *)(fw->data + pos);
				pos += packet_size;
				if (packet_size > 0)
					ret |= it913x_io(udev, WRITE_DATA,
						DEV_0, CMD_SCATTER_WRITE, 0,
						0, fw_data, packet_size);
				udelay(1000);
			}
		}
		i++;
	}

	ret |= it913x_io(udev, WRITE_CMD, DEV_0, CMD_BOOT, 0, 0, NULL, 0);

	msleep(100);

	if (ret < 0)
		info("FRM Firmware Download Failed (%04x)" , ret);
	else
		info("FRM Firmware Download Completed - Resetting Device");

	ret |= it913x_return_status(udev);

	msleep(30);

	ret |= it913x_wr_reg(udev, DEV_0,  I2C_CLK, I2C_CLK_400);

	/* Tuner function */
	if (it913x_config.dual_mode)
		ret |= it913x_wr_reg(udev, DEV_0_DMOD , 0xec4c, 0xa0);
	else
		ret |= it913x_wr_reg(udev, DEV_0_DMOD , 0xec4c, 0x68);

	if ((it913x_config.chip_ver == 1) &&
		(it913x_config.chip_type == 0x9135)) {
		ret |= it913x_wr_reg(udev, DEV_0,  PADODPU, 0x0);
		ret |= it913x_wr_reg(udev, DEV_0,  AGC_O_D, 0x0);
		if (it913x_config.dual_mode) {
			ret |= it913x_wr_reg(udev, DEV_1,  PADODPU, 0x0);
			ret |= it913x_wr_reg(udev, DEV_1,  AGC_O_D, 0x0);
		}
	}

	return (ret < 0) ? -ENODEV : 0;
}

static int it913x_name(struct dvb_usb_adapter *adap)
{
	const char *desc = adap->dev->desc->name;
	char *fe_name[] = {"_1", "_2", "_3", "_4"};
	char *name = adap->fe_adap[0].fe->ops.info.name;

	strlcpy(name, desc, 128);
	strlcat(name, fe_name[adap->id], 128);

	return 0;
}

static int it913x_frontend_attach(struct dvb_usb_adapter *adap)
{
	struct usb_device *udev = adap->dev->udev;
	struct it913x_state *st = adap->dev->priv;
	int ret = 0;
	u8 adap_addr = I2C_BASE_ADDR + (adap->id << 5);
	u16 ep_size = adap->props.fe[0].stream.u.bulk.buffersize / 4;
	u8 pkt_size = 0x80;

	if (adap->dev->udev->speed != USB_SPEED_HIGH)
		pkt_size = 0x10;

	it913x_config.adf = it913x_read_reg(udev, IO_MUX_POWER_CLK);

	if (adap->id == 0)
		memcpy(&st->it913x_config, &it913x_config,
			sizeof(struct ite_config));

	adap->fe_adap[0].fe = dvb_attach(it913x_fe_attach,
		&adap->dev->i2c_adap, adap_addr, &st->it913x_config);

	if (adap->id == 0 && adap->fe_adap[0].fe) {
		ret = it913x_wr_reg(udev, DEV_0_DMOD, MP2_SW_RST, 0x1);
		ret = it913x_wr_reg(udev, DEV_0_DMOD, MP2IF2_SW_RST, 0x1);
		ret = it913x_wr_reg(udev, DEV_0, EP0_TX_EN, 0x0f);
		ret = it913x_wr_reg(udev, DEV_0, EP0_TX_NAK, 0x1b);
		ret = it913x_wr_reg(udev, DEV_0, EP0_TX_EN, 0x2f);
		ret = it913x_wr_reg(udev, DEV_0, EP4_TX_LEN_LSB,
					ep_size & 0xff);
		ret = it913x_wr_reg(udev, DEV_0, EP4_TX_LEN_MSB, ep_size >> 8);
		ret = it913x_wr_reg(udev, DEV_0, EP4_MAX_PKT, pkt_size);
	} else if (adap->id == 1 && adap->fe_adap[0].fe) {
		ret = it913x_wr_reg(udev, DEV_0, EP0_TX_EN, 0x6f);
		ret = it913x_wr_reg(udev, DEV_0, EP5_TX_LEN_LSB,
					ep_size & 0xff);
		ret = it913x_wr_reg(udev, DEV_0, EP5_TX_LEN_MSB, ep_size >> 8);
		ret = it913x_wr_reg(udev, DEV_0, EP5_MAX_PKT, pkt_size);
		ret = it913x_wr_reg(udev, DEV_0_DMOD, MP2IF2_EN, 0x1);
		ret = it913x_wr_reg(udev, DEV_1_DMOD, MP2IF_SERIAL, 0x1);
		ret = it913x_wr_reg(udev, DEV_1, TOP_HOSTB_SER_MODE, 0x1);
		ret = it913x_wr_reg(udev, DEV_0_DMOD, TSIS_ENABLE, 0x1);
		ret = it913x_wr_reg(udev, DEV_0_DMOD, MP2_SW_RST, 0x0);
		ret = it913x_wr_reg(udev, DEV_0_DMOD, MP2IF2_SW_RST, 0x0);
		ret = it913x_wr_reg(udev, DEV_0_DMOD, MP2IF2_HALF_PSB, 0x0);
		ret = it913x_wr_reg(udev, DEV_0_DMOD, MP2IF_STOP_EN, 0x1);
		ret = it913x_wr_reg(udev, DEV_1_DMOD, MPEG_FULL_SPEED, 0x0);
		ret = it913x_wr_reg(udev, DEV_1_DMOD, MP2IF_STOP_EN, 0x0);
	} else
		return -ENODEV;

	ret = it913x_name(adap);

	return ret;
}

/* DVB USB Driver */
static struct dvb_usb_device_properties it913x_properties;

static int it913x_probe(struct usb_interface *intf,
		const struct usb_device_id *id)
{
	cmd_counter = 0;
	if (0 == dvb_usb_device_init(intf, &it913x_properties,
				     THIS_MODULE, NULL, adapter_nr)) {
		info("DEV registering device driver");
		return 0;
	}

	info("DEV it913x Error");
	return -ENODEV;

}

static struct usb_device_id it913x_table[] = {
	{ USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_UB499_2T_T09) },
	{ USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135) },
	{ USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV22_IT9137) },
	{ USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135_9005) },
	{ USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135_9006) },
	{}		/* Terminating entry */
};

MODULE_DEVICE_TABLE(usb, it913x_table);

static struct dvb_usb_device_properties it913x_properties = {
	.caps = DVB_USB_IS_AN_I2C_ADAPTER,
	.usb_ctrl = DEVICE_SPECIFIC,
	.download_firmware = it913x_download_firmware,
	.firmware = "dvb-usb-it9137-01.fw",
	.no_reconnect = 1,
	.size_of_priv = sizeof(struct it913x_state),
	.num_adapters = 2,
	.adapter = {
		{
		.num_frontends = 1,
		.fe = {{
			.caps = DVB_USB_ADAP_HAS_PID_FILTER|
				DVB_USB_ADAP_NEED_PID_FILTERING|
				DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
			.streaming_ctrl   = it913x_streaming_ctrl,
			.pid_filter_count = 31,
			.pid_filter = it913x_pid_filter,
			.pid_filter_ctrl  = it913x_pid_filter_ctrl,
			.frontend_attach  = it913x_frontend_attach,
			/* parameter for the MPEG2-data transfer */
			.stream = {
				.type = USB_BULK,
				.count = 10,
				.endpoint = 0x04,
				.u = {/* Keep Low if PID filter on */
					.bulk = {
					.buffersize =
						TS_BUFFER_SIZE_PID,
					}
				}
			}
		}},
		},
			{
		.num_frontends = 1,
		.fe = {{
			.caps = DVB_USB_ADAP_HAS_PID_FILTER|
				DVB_USB_ADAP_NEED_PID_FILTERING|
				DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
			.streaming_ctrl   = it913x_streaming_ctrl,
			.pid_filter_count = 31,
			.pid_filter = it913x_pid_filter,
			.pid_filter_ctrl  = it913x_pid_filter_ctrl,
			.frontend_attach  = it913x_frontend_attach,
			/* parameter for the MPEG2-data transfer */
			.stream = {
				.type = USB_BULK,
				.count = 5,
				.endpoint = 0x05,
				.u = {
					.bulk = {
						.buffersize =
							TS_BUFFER_SIZE_PID,
					}
				}
			}
		}},
		}
	},
	.identify_state   = it913x_identify_state,
	.rc.core = {
		.protocol	= RC_TYPE_NEC,
		.module_name	= "it913x",
		.rc_query	= it913x_rc_query,
		.rc_interval	= IT913X_POLL,
		.allowed_protos	= RC_TYPE_NEC,
		.rc_codes	= RC_MAP_IT913X_V1,
	},
	.i2c_algo         = &it913x_i2c_algo,
	.num_device_descs = 5,
	.devices = {
		{   "Kworld UB499-2T T09(IT9137)",
			{ &it913x_table[0], NULL },
			},
		{   "ITE 9135 Generic",
			{ &it913x_table[1], NULL },
			},
		{   "Sveon STV22 Dual DVB-T HDTV(IT9137)",
			{ &it913x_table[2], NULL },
			},
		{   "ITE 9135(9005) Generic",
			{ &it913x_table[3], NULL },
			},
		{   "ITE 9135(9006) Generic",
			{ &it913x_table[4], NULL },
			},
	}
};

static struct usb_driver it913x_driver = {
	.name		= "it913x",
	.probe		= it913x_probe,
	.disconnect	= dvb_usb_device_exit,
	.id_table	= it913x_table,
};

module_usb_driver(it913x_driver);

MODULE_AUTHOR("Malcolm Priestley <tvboxspy@gmail.com>");
MODULE_DESCRIPTION("it913x USB 2 Driver");
MODULE_VERSION("1.27");
MODULE_LICENSE("GPL");