summaryrefslogtreecommitdiffstats
path: root/drivers/media/pci/smipcie/smipcie.c
blob: 411592524c63501f23504ec44e3964c57ff22539 (plain)
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
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
/*
 * SMI PCIe driver for DVBSky cards.
 *
 * Copyright (C) 2014 Max nibble <nibble.max@gmail.com>
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    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.
 */

#include "smipcie.h"
#include "m88ds3103.h"
#include "ts2020.h"
#include "m88rs6000t.h"
#include "si2168.h"
#include "si2157.h"

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

static int smi_hw_init(struct smi_dev *dev)
{
	u32 port_mux, port_ctrl, int_stat;

	/* set port mux.*/
	port_mux = smi_read(MUX_MODE_CTRL);
	port_mux &= ~(rbPaMSMask);
	port_mux |= rbPaMSDtvNoGpio;
	port_mux &= ~(rbPbMSMask);
	port_mux |= rbPbMSDtvNoGpio;
	port_mux &= ~(0x0f0000);
	port_mux |= 0x50000;
	smi_write(MUX_MODE_CTRL, port_mux);

	/* set DTV register.*/
	/* Port A */
	port_ctrl = smi_read(VIDEO_CTRL_STATUS_A);
	port_ctrl &= ~0x01;
	smi_write(VIDEO_CTRL_STATUS_A, port_ctrl);
	port_ctrl = smi_read(MPEG2_CTRL_A);
	port_ctrl &= ~0x40;
	port_ctrl |= 0x80;
	smi_write(MPEG2_CTRL_A, port_ctrl);
	/* Port B */
	port_ctrl = smi_read(VIDEO_CTRL_STATUS_B);
	port_ctrl &= ~0x01;
	smi_write(VIDEO_CTRL_STATUS_B, port_ctrl);
	port_ctrl = smi_read(MPEG2_CTRL_B);
	port_ctrl &= ~0x40;
	port_ctrl |= 0x80;
	smi_write(MPEG2_CTRL_B, port_ctrl);

	/* disable and clear interrupt.*/
	smi_write(MSI_INT_ENA_CLR, ALL_INT);
	int_stat = smi_read(MSI_INT_STATUS);
	smi_write(MSI_INT_STATUS_CLR, int_stat);

	/* reset demod.*/
	smi_clear(PERIPHERAL_CTRL, 0x0303);
	msleep(50);
	smi_set(PERIPHERAL_CTRL, 0x0101);
	return 0;
}

/* i2c bit bus.*/
static void smi_i2c_cfg(struct smi_dev *dev, u32 sw_ctl)
{
	u32 dwCtrl;

	dwCtrl = smi_read(sw_ctl);
	dwCtrl &= ~0x18; /* disable output.*/
	dwCtrl |= 0x21; /* reset and software mode.*/
	dwCtrl &= ~0xff00;
	dwCtrl |= 0x6400;
	smi_write(sw_ctl, dwCtrl);
	msleep(20);
	dwCtrl = smi_read(sw_ctl);
	dwCtrl &= ~0x20;
	smi_write(sw_ctl, dwCtrl);
}

static void smi_i2c_setsda(struct smi_dev *dev, int state, u32 sw_ctl)
{
	if (state) {
		/* set as input.*/
		smi_clear(sw_ctl, SW_I2C_MSK_DAT_EN);
	} else {
		smi_clear(sw_ctl, SW_I2C_MSK_DAT_OUT);
		/* set as output.*/
		smi_set(sw_ctl, SW_I2C_MSK_DAT_EN);
	}
}

static void smi_i2c_setscl(void *data, int state, u32 sw_ctl)
{
	struct smi_dev *dev = data;

	if (state) {
		/* set as input.*/
		smi_clear(sw_ctl, SW_I2C_MSK_CLK_EN);
	} else {
		smi_clear(sw_ctl, SW_I2C_MSK_CLK_OUT);
		/* set as output.*/
		smi_set(sw_ctl, SW_I2C_MSK_CLK_EN);
	}
}

static int smi_i2c_getsda(void *data, u32 sw_ctl)
{
	struct smi_dev *dev = data;
	/* set as input.*/
	smi_clear(sw_ctl, SW_I2C_MSK_DAT_EN);
	udelay(1);
	return (smi_read(sw_ctl) & SW_I2C_MSK_DAT_IN) ? 1 : 0;
}

static int smi_i2c_getscl(void *data, u32 sw_ctl)
{
	struct smi_dev *dev = data;
	/* set as input.*/
	smi_clear(sw_ctl, SW_I2C_MSK_CLK_EN);
	udelay(1);
	return (smi_read(sw_ctl) & SW_I2C_MSK_CLK_IN) ? 1 : 0;
}
/* i2c 0.*/
static void smi_i2c0_setsda(void *data, int state)
{
	struct smi_dev *dev = data;

	smi_i2c_setsda(dev, state, I2C_A_SW_CTL);
}

static void smi_i2c0_setscl(void *data, int state)
{
	struct smi_dev *dev = data;

	smi_i2c_setscl(dev, state, I2C_A_SW_CTL);
}

static int smi_i2c0_getsda(void *data)
{
	struct smi_dev *dev = data;

	return	smi_i2c_getsda(dev, I2C_A_SW_CTL);
}

static int smi_i2c0_getscl(void *data)
{
	struct smi_dev *dev = data;

	return	smi_i2c_getscl(dev, I2C_A_SW_CTL);
}
/* i2c 1.*/
static void smi_i2c1_setsda(void *data, int state)
{
	struct smi_dev *dev = data;

	smi_i2c_setsda(dev, state, I2C_B_SW_CTL);
}

static void smi_i2c1_setscl(void *data, int state)
{
	struct smi_dev *dev = data;

	smi_i2c_setscl(dev, state, I2C_B_SW_CTL);
}

static int smi_i2c1_getsda(void *data)
{
	struct smi_dev *dev = data;

	return	smi_i2c_getsda(dev, I2C_B_SW_CTL);
}

static int smi_i2c1_getscl(void *data)
{
	struct smi_dev *dev = data;

	return	smi_i2c_getscl(dev, I2C_B_SW_CTL);
}

static int smi_i2c_init(struct smi_dev *dev)
{
	int ret;

	/* i2c bus 0 */
	smi_i2c_cfg(dev, I2C_A_SW_CTL);
	i2c_set_adapdata(&dev->i2c_bus[0], dev);
	strcpy(dev->i2c_bus[0].name, "SMI-I2C0");
	dev->i2c_bus[0].owner = THIS_MODULE;
	dev->i2c_bus[0].dev.parent = &dev->pci_dev->dev;
	dev->i2c_bus[0].algo_data = &dev->i2c_bit[0];
	dev->i2c_bit[0].data = dev;
	dev->i2c_bit[0].setsda = smi_i2c0_setsda;
	dev->i2c_bit[0].setscl = smi_i2c0_setscl;
	dev->i2c_bit[0].getsda = smi_i2c0_getsda;
	dev->i2c_bit[0].getscl = smi_i2c0_getscl;
	dev->i2c_bit[0].udelay = 12;
	dev->i2c_bit[0].timeout = 10;
	/* Raise SCL and SDA */
	smi_i2c0_setsda(dev, 1);
	smi_i2c0_setscl(dev, 1);

	ret = i2c_bit_add_bus(&dev->i2c_bus[0]);
	if (ret < 0)
		return ret;

	/* i2c bus 1 */
	smi_i2c_cfg(dev, I2C_B_SW_CTL);
	i2c_set_adapdata(&dev->i2c_bus[1], dev);
	strcpy(dev->i2c_bus[1].name, "SMI-I2C1");
	dev->i2c_bus[1].owner = THIS_MODULE;
	dev->i2c_bus[1].dev.parent = &dev->pci_dev->dev;
	dev->i2c_bus[1].algo_data = &dev->i2c_bit[1];
	dev->i2c_bit[1].data = dev;
	dev->i2c_bit[1].setsda = smi_i2c1_setsda;
	dev->i2c_bit[1].setscl = smi_i2c1_setscl;
	dev->i2c_bit[1].getsda = smi_i2c1_getsda;
	dev->i2c_bit[1].getscl = smi_i2c1_getscl;
	dev->i2c_bit[1].udelay = 12;
	dev->i2c_bit[1].timeout = 10;
	/* Raise SCL and SDA */
	smi_i2c1_setsda(dev, 1);
	smi_i2c1_setscl(dev, 1);

	ret = i2c_bit_add_bus(&dev->i2c_bus[1]);
	if (ret < 0)
		i2c_del_adapter(&dev->i2c_bus[0]);

	return ret;
}

static void smi_i2c_exit(struct smi_dev *dev)
{
	i2c_del_adapter(&dev->i2c_bus[0]);
	i2c_del_adapter(&dev->i2c_bus[1]);
}

static int smi_read_eeprom(struct i2c_adapter *i2c, u16 reg, u8 *data, u16 size)
{
	int ret;
	u8 b0[2] = { (reg >> 8) & 0xff, reg & 0xff };

	struct i2c_msg msg[] = {
		{ .addr = 0x50, .flags = 0,
			.buf = b0, .len = 2 },
		{ .addr = 0x50, .flags = I2C_M_RD,
			.buf = data, .len = size }
	};

	ret = i2c_transfer(i2c, msg, 2);

	if (ret != 2) {
		dev_err(&i2c->dev, "%s: reg=0x%x (error=%d)\n",
			__func__, reg, ret);
		return ret;
	}
	return ret;
}

/* ts port interrupt operations */
static void smi_port_disableInterrupt(struct smi_port *port)
{
	struct smi_dev *dev = port->dev;

	smi_write(MSI_INT_ENA_CLR,
		(port->_dmaInterruptCH0 | port->_dmaInterruptCH1));
}

static void smi_port_enableInterrupt(struct smi_port *port)
{
	struct smi_dev *dev = port->dev;

	smi_write(MSI_INT_ENA_SET,
		(port->_dmaInterruptCH0 | port->_dmaInterruptCH1));
}

static void smi_port_clearInterrupt(struct smi_port *port)
{
	struct smi_dev *dev = port->dev;

	smi_write(MSI_INT_STATUS_CLR,
		(port->_dmaInterruptCH0 | port->_dmaInterruptCH1));
}

/* tasklet handler: DMA data to dmx.*/
static void smi_dma_xfer(unsigned long data)
{
	struct smi_port *port = (struct smi_port *) data;
	struct smi_dev *dev = port->dev;
	u32 intr_status, finishedData, dmaManagement;
	u8 dmaChan0State, dmaChan1State;

	intr_status = port->_int_status;
	dmaManagement = smi_read(port->DMA_MANAGEMENT);
	dmaChan0State = (u8)((dmaManagement & 0x00000030) >> 4);
	dmaChan1State = (u8)((dmaManagement & 0x00300000) >> 20);

	/* CH-0 DMA interrupt.*/
	if ((intr_status & port->_dmaInterruptCH0) && (dmaChan0State == 0x01)) {
		dev_dbg(&dev->pci_dev->dev,
			"Port[%d]-DMA CH0 engine complete successful !\n",
			port->idx);
		finishedData = smi_read(port->DMA_CHAN0_TRANS_STATE);
		finishedData &= 0x003FFFFF;
		/* value of DMA_PORT0_CHAN0_TRANS_STATE register [21:0]
		 * indicate dma total transfer length and
		 * zero of [21:0] indicate dma total transfer length
		 * equal to 0x400000 (4MB)*/
		if (finishedData == 0)
			finishedData = 0x00400000;
		if (finishedData != SMI_TS_DMA_BUF_SIZE) {
			dev_dbg(&dev->pci_dev->dev,
				"DMA CH0 engine complete length mismatched, finish data=%d !\n",
				finishedData);
		}
		dvb_dmx_swfilter_packets(&port->demux,
			port->cpu_addr[0], (finishedData / 188));
		/*dvb_dmx_swfilter(&port->demux,
			port->cpu_addr[0], finishedData);*/
	}
	/* CH-1 DMA interrupt.*/
	if ((intr_status & port->_dmaInterruptCH1) && (dmaChan1State == 0x01)) {
		dev_dbg(&dev->pci_dev->dev,
			"Port[%d]-DMA CH1 engine complete successful !\n",
			port->idx);
		finishedData = smi_read(port->DMA_CHAN1_TRANS_STATE);
		finishedData &= 0x003FFFFF;
		/* value of DMA_PORT0_CHAN0_TRANS_STATE register [21:0]
		 * indicate dma total transfer length and
		 * zero of [21:0] indicate dma total transfer length
		 * equal to 0x400000 (4MB)*/
		if (finishedData == 0)
			finishedData = 0x00400000;
		if (finishedData != SMI_TS_DMA_BUF_SIZE) {
			dev_dbg(&dev->pci_dev->dev,
				"DMA CH1 engine complete length mismatched, finish data=%d !\n",
				finishedData);
		}
		dvb_dmx_swfilter_packets(&port->demux,
			port->cpu_addr[1], (finishedData / 188));
		/*dvb_dmx_swfilter(&port->demux,
			port->cpu_addr[1], finishedData);*/
	}
	/* restart DMA.*/
	if (intr_status & port->_dmaInterruptCH0)
		dmaManagement |= 0x00000002;
	if (intr_status & port->_dmaInterruptCH1)
		dmaManagement |= 0x00020000;
	smi_write(port->DMA_MANAGEMENT, dmaManagement);
	/* Re-enable interrupts */
	smi_port_enableInterrupt(port);
}

static void smi_port_dma_free(struct smi_port *port)
{
	if (port->cpu_addr[0]) {
		pci_free_consistent(port->dev->pci_dev, SMI_TS_DMA_BUF_SIZE,
				    port->cpu_addr[0], port->dma_addr[0]);
		port->cpu_addr[0] = NULL;
	}
	if (port->cpu_addr[1]) {
		pci_free_consistent(port->dev->pci_dev, SMI_TS_DMA_BUF_SIZE,
				    port->cpu_addr[1], port->dma_addr[1]);
		port->cpu_addr[1] = NULL;
	}
}

static int smi_port_init(struct smi_port *port, int dmaChanUsed)
{
	dev_dbg(&port->dev->pci_dev->dev,
		"%s, port %d, dmaused %d\n", __func__, port->idx, dmaChanUsed);
	port->enable = 0;
	if (port->idx == 0) {
		/* Port A */
		port->_dmaInterruptCH0 = dmaChanUsed & 0x01;
		port->_dmaInterruptCH1 = dmaChanUsed & 0x02;

		port->DMA_CHAN0_ADDR_LOW	= DMA_PORTA_CHAN0_ADDR_LOW;
		port->DMA_CHAN0_ADDR_HI		= DMA_PORTA_CHAN0_ADDR_HI;
		port->DMA_CHAN0_TRANS_STATE	= DMA_PORTA_CHAN0_TRANS_STATE;
		port->DMA_CHAN0_CONTROL		= DMA_PORTA_CHAN0_CONTROL;
		port->DMA_CHAN1_ADDR_LOW	= DMA_PORTA_CHAN1_ADDR_LOW;
		port->DMA_CHAN1_ADDR_HI		= DMA_PORTA_CHAN1_ADDR_HI;
		port->DMA_CHAN1_TRANS_STATE	= DMA_PORTA_CHAN1_TRANS_STATE;
		port->DMA_CHAN1_CONTROL		= DMA_PORTA_CHAN1_CONTROL;
		port->DMA_MANAGEMENT		= DMA_PORTA_MANAGEMENT;
	} else {
		/* Port B */
		port->_dmaInterruptCH0 = (dmaChanUsed << 2) & 0x04;
		port->_dmaInterruptCH1 = (dmaChanUsed << 2) & 0x08;

		port->DMA_CHAN0_ADDR_LOW	= DMA_PORTB_CHAN0_ADDR_LOW;
		port->DMA_CHAN0_ADDR_HI		= DMA_PORTB_CHAN0_ADDR_HI;
		port->DMA_CHAN0_TRANS_STATE	= DMA_PORTB_CHAN0_TRANS_STATE;
		port->DMA_CHAN0_CONTROL		= DMA_PORTB_CHAN0_CONTROL;
		port->DMA_CHAN1_ADDR_LOW	= DMA_PORTB_CHAN1_ADDR_LOW;
		port->DMA_CHAN1_ADDR_HI		= DMA_PORTB_CHAN1_ADDR_HI;
		port->DMA_CHAN1_TRANS_STATE	= DMA_PORTB_CHAN1_TRANS_STATE;
		port->DMA_CHAN1_CONTROL		= DMA_PORTB_CHAN1_CONTROL;
		port->DMA_MANAGEMENT		= DMA_PORTB_MANAGEMENT;
	}

	if (port->_dmaInterruptCH0) {
		port->cpu_addr[0] = pci_alloc_consistent(port->dev->pci_dev,
					SMI_TS_DMA_BUF_SIZE,
					&port->dma_addr[0]);
		if (!port->cpu_addr[0]) {
			dev_err(&port->dev->pci_dev->dev,
				"Port[%d] DMA CH0 memory allocation failed!\n",
				port->idx);
			goto err;
		}
	}

	if (port->_dmaInterruptCH1) {
		port->cpu_addr[1] = pci_alloc_consistent(port->dev->pci_dev,
					SMI_TS_DMA_BUF_SIZE,
					&port->dma_addr[1]);
		if (!port->cpu_addr[1]) {
			dev_err(&port->dev->pci_dev->dev,
				"Port[%d] DMA CH1 memory allocation failed!\n",
				port->idx);
			goto err;
		}
	}

	smi_port_disableInterrupt(port);
	tasklet_init(&port->tasklet, smi_dma_xfer, (unsigned long)port);
	tasklet_disable(&port->tasklet);
	port->enable = 1;
	return 0;
err:
	smi_port_dma_free(port);
	return -ENOMEM;
}

static void smi_port_exit(struct smi_port *port)
{
	smi_port_disableInterrupt(port);
	tasklet_kill(&port->tasklet);
	smi_port_dma_free(port);
	port->enable = 0;
}

static int smi_port_irq(struct smi_port *port, u32 int_status)
{
	u32 port_req_irq = port->_dmaInterruptCH0 | port->_dmaInterruptCH1;
	int handled = 0;

	if (int_status & port_req_irq) {
		smi_port_disableInterrupt(port);
		port->_int_status = int_status;
		smi_port_clearInterrupt(port);
		tasklet_schedule(&port->tasklet);
		handled = 1;
	}
	return handled;
}

static irqreturn_t smi_irq_handler(int irq, void *dev_id)
{
	struct smi_dev *dev = dev_id;
	struct smi_port *port0 = &dev->ts_port[0];
	struct smi_port *port1 = &dev->ts_port[1];
	int handled = 0;

	u32 intr_status = smi_read(MSI_INT_STATUS);

	/* ts0 interrupt.*/
	if (dev->info->ts_0)
		handled += smi_port_irq(port0, intr_status);

	/* ts1 interrupt.*/
	if (dev->info->ts_1)
		handled += smi_port_irq(port1, intr_status);

	return IRQ_RETVAL(handled);
}

static struct i2c_client *smi_add_i2c_client(struct i2c_adapter *adapter,
			struct i2c_board_info *info)
{
	struct i2c_client *client;

	request_module(info->type);
	client = i2c_new_device(adapter, info);
	if (client == NULL || client->dev.driver == NULL)
		goto err_add_i2c_client;

	if (!try_module_get(client->dev.driver->owner)) {
		i2c_unregister_device(client);
		goto err_add_i2c_client;
	}
	return client;

err_add_i2c_client:
	client = NULL;
	return client;
}

static void smi_del_i2c_client(struct i2c_client *client)
{
	module_put(client->dev.driver->owner);
	i2c_unregister_device(client);
}

static const struct m88ds3103_config smi_dvbsky_m88ds3103_cfg = {
	.i2c_addr = 0x68,
	.clock = 27000000,
	.i2c_wr_max = 33,
	.clock_out = 0,
	.ts_mode = M88DS3103_TS_PARALLEL,
	.ts_clk = 16000,
	.ts_clk_pol = 1,
	.agc = 0x99,
	.lnb_hv_pol = 0,
	.lnb_en_pol = 1,
};

static int smi_dvbsky_m88ds3103_fe_attach(struct smi_port *port)
{
	int ret = 0;
	struct smi_dev *dev = port->dev;
	struct i2c_adapter *i2c;
	/* tuner I2C module */
	struct i2c_adapter *tuner_i2c_adapter;
	struct i2c_client *tuner_client;
	struct i2c_board_info tuner_info;
	struct ts2020_config ts2020_config = {};
	memset(&tuner_info, 0, sizeof(struct i2c_board_info));
	i2c = (port->idx == 0) ? &dev->i2c_bus[0] : &dev->i2c_bus[1];

	/* attach demod */
	port->fe = dvb_attach(m88ds3103_attach,
			&smi_dvbsky_m88ds3103_cfg, i2c, &tuner_i2c_adapter);
	if (!port->fe) {
		ret = -ENODEV;
		return ret;
	}
	/* attach tuner */
	ts2020_config.fe = port->fe;
	strlcpy(tuner_info.type, "ts2020", I2C_NAME_SIZE);
	tuner_info.addr = 0x60;
	tuner_info.platform_data = &ts2020_config;
	tuner_client = smi_add_i2c_client(tuner_i2c_adapter, &tuner_info);
	if (!tuner_client) {
		ret = -ENODEV;
		goto err_tuner_i2c_device;
	}

	/* delegate signal strength measurement to tuner */
	port->fe->ops.read_signal_strength =
			port->fe->ops.tuner_ops.get_rf_strength;

	port->i2c_client_tuner = tuner_client;
	return ret;

err_tuner_i2c_device:
	dvb_frontend_detach(port->fe);
	return ret;
}

static const struct m88ds3103_config smi_dvbsky_m88rs6000_cfg = {
	.i2c_addr = 0x69,
	.clock = 27000000,
	.i2c_wr_max = 33,
	.ts_mode = M88DS3103_TS_PARALLEL,
	.ts_clk = 16000,
	.ts_clk_pol = 1,
	.agc = 0x99,
	.lnb_hv_pol = 0,
	.lnb_en_pol = 1,
};

static int smi_dvbsky_m88rs6000_fe_attach(struct smi_port *port)
{
	int ret = 0;
	struct smi_dev *dev = port->dev;
	struct i2c_adapter *i2c;
	/* tuner I2C module */
	struct i2c_adapter *tuner_i2c_adapter;
	struct i2c_client *tuner_client;
	struct i2c_board_info tuner_info;
	struct m88rs6000t_config m88rs6000t_config;

	memset(&tuner_info, 0, sizeof(struct i2c_board_info));
	i2c = (port->idx == 0) ? &dev->i2c_bus[0] : &dev->i2c_bus[1];

	/* attach demod */
	port->fe = dvb_attach(m88ds3103_attach,
			&smi_dvbsky_m88rs6000_cfg, i2c, &tuner_i2c_adapter);
	if (!port->fe) {
		ret = -ENODEV;
		return ret;
	}
	/* attach tuner */
	m88rs6000t_config.fe = port->fe;
	strlcpy(tuner_info.type, "m88rs6000t", I2C_NAME_SIZE);
	tuner_info.addr = 0x21;
	tuner_info.platform_data = &m88rs6000t_config;
	tuner_client = smi_add_i2c_client(tuner_i2c_adapter, &tuner_info);
	if (!tuner_client) {
		ret = -ENODEV;
		goto err_tuner_i2c_device;
	}

	/* delegate signal strength measurement to tuner */
	port->fe->ops.read_signal_strength =
			port->fe->ops.tuner_ops.get_rf_strength;

	port->i2c_client_tuner = tuner_client;
	return ret;

err_tuner_i2c_device:
	dvb_frontend_detach(port->fe);
	return ret;
}

static int smi_dvbsky_sit2_fe_attach(struct smi_port *port)
{
	int ret = 0;
	struct smi_dev *dev = port->dev;
	struct i2c_adapter *i2c;
	struct i2c_adapter *tuner_i2c_adapter;
	struct i2c_client *client_tuner, *client_demod;
	struct i2c_board_info client_info;
	struct si2168_config si2168_config;
	struct si2157_config si2157_config;

	/* select i2c bus */
	i2c = (port->idx == 0) ? &dev->i2c_bus[0] : &dev->i2c_bus[1];

	/* attach demod */
	memset(&si2168_config, 0, sizeof(si2168_config));
	si2168_config.i2c_adapter = &tuner_i2c_adapter;
	si2168_config.fe = &port->fe;
	si2168_config.ts_mode = SI2168_TS_PARALLEL;

	memset(&client_info, 0, sizeof(struct i2c_board_info));
	strlcpy(client_info.type, "si2168", I2C_NAME_SIZE);
	client_info.addr = 0x64;
	client_info.platform_data = &si2168_config;

	client_demod = smi_add_i2c_client(i2c, &client_info);
	if (!client_demod) {
		ret = -ENODEV;
		return ret;
	}
	port->i2c_client_demod = client_demod;

	/* attach tuner */
	memset(&si2157_config, 0, sizeof(si2157_config));
	si2157_config.fe = port->fe;

	memset(&client_info, 0, sizeof(struct i2c_board_info));
	strlcpy(client_info.type, "si2157", I2C_NAME_SIZE);
	client_info.addr = 0x60;
	client_info.platform_data = &si2157_config;

	client_tuner = smi_add_i2c_client(tuner_i2c_adapter, &client_info);
	if (!client_tuner) {
		smi_del_i2c_client(port->i2c_client_demod);
		port->i2c_client_demod = NULL;
		ret = -ENODEV;
		return ret;
	}
	port->i2c_client_tuner = client_tuner;
	return ret;
}

static int smi_fe_init(struct smi_port *port)
{
	int ret = 0;
	struct smi_dev *dev = port->dev;
	struct dvb_adapter *adap = &port->dvb_adapter;
	u8 mac_ee[16];

	dev_dbg(&port->dev->pci_dev->dev,
		"%s: port %d, fe_type = %d\n",
		__func__, port->idx, port->fe_type);
	switch (port->fe_type) {
	case DVBSKY_FE_M88DS3103:
		ret = smi_dvbsky_m88ds3103_fe_attach(port);
		break;
	case DVBSKY_FE_M88RS6000:
		ret = smi_dvbsky_m88rs6000_fe_attach(port);
		break;
	case DVBSKY_FE_SIT2:
		ret = smi_dvbsky_sit2_fe_attach(port);
		break;
	}
	if (ret < 0)
		return ret;

	/* register dvb frontend */
	ret = dvb_register_frontend(adap, port->fe);
	if (ret < 0) {
		if (port->i2c_client_tuner)
			smi_del_i2c_client(port->i2c_client_tuner);
		if (port->i2c_client_demod)
			smi_del_i2c_client(port->i2c_client_demod);
		dvb_frontend_detach(port->fe);
		return ret;
	}
	/* init MAC.*/
	ret = smi_read_eeprom(&dev->i2c_bus[0], 0xc0, mac_ee, 16);
	dev_info(&port->dev->pci_dev->dev,
		"DVBSky SMI PCIe MAC= %pM\n", mac_ee + (port->idx)*8);
	memcpy(adap->proposed_mac, mac_ee + (port->idx)*8, 6);
	return ret;
}

static void smi_fe_exit(struct smi_port *port)
{
	dvb_unregister_frontend(port->fe);
	/* remove I2C demod and tuner */
	if (port->i2c_client_tuner)
		smi_del_i2c_client(port->i2c_client_tuner);
	if (port->i2c_client_demod)
		smi_del_i2c_client(port->i2c_client_demod);
	dvb_frontend_detach(port->fe);
}

static int my_dvb_dmx_ts_card_init(struct dvb_demux *dvbdemux, char *id,
			    int (*start_feed)(struct dvb_demux_feed *),
			    int (*stop_feed)(struct dvb_demux_feed *),
			    void *priv)
{
	dvbdemux->priv = priv;

	dvbdemux->filternum = 256;
	dvbdemux->feednum = 256;
	dvbdemux->start_feed = start_feed;
	dvbdemux->stop_feed = stop_feed;
	dvbdemux->write_to_decoder = NULL;
	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
				      DMX_SECTION_FILTERING |
				      DMX_MEMORY_BASED_FILTERING);
	return dvb_dmx_init(dvbdemux);
}

static int my_dvb_dmxdev_ts_card_init(struct dmxdev *dmxdev,
			       struct dvb_demux *dvbdemux,
			       struct dmx_frontend *hw_frontend,
			       struct dmx_frontend *mem_frontend,
			       struct dvb_adapter *dvb_adapter)
{
	int ret;

	dmxdev->filternum = 256;
	dmxdev->demux = &dvbdemux->dmx;
	dmxdev->capabilities = 0;
	ret = dvb_dmxdev_init(dmxdev, dvb_adapter);
	if (ret < 0)
		return ret;

	hw_frontend->source = DMX_FRONTEND_0;
	dvbdemux->dmx.add_frontend(&dvbdemux->dmx, hw_frontend);
	mem_frontend->source = DMX_MEMORY_FE;
	dvbdemux->dmx.add_frontend(&dvbdemux->dmx, mem_frontend);
	return dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, hw_frontend);
}

static u32 smi_config_DMA(struct smi_port *port)
{
	struct smi_dev *dev = port->dev;
	u32 totalLength = 0, dmaMemPtrLow, dmaMemPtrHi, dmaCtlReg;
	u8 chanLatencyTimer = 0, dmaChanEnable = 1, dmaTransStart = 1;
	u32 dmaManagement = 0, tlpTransUnit = DMA_TRANS_UNIT_188;
	u8 tlpTc = 0, tlpTd = 1, tlpEp = 0, tlpAttr = 0;
	u64 mem;

	dmaManagement = smi_read(port->DMA_MANAGEMENT);
	/* Setup Channel-0 */
	if (port->_dmaInterruptCH0) {
		totalLength = SMI_TS_DMA_BUF_SIZE;
		mem = port->dma_addr[0];
		dmaMemPtrLow = mem & 0xffffffff;
		dmaMemPtrHi = mem >> 32;
		dmaCtlReg = (totalLength) | (tlpTransUnit << 22) | (tlpTc << 25)
			| (tlpTd << 28) | (tlpEp << 29) | (tlpAttr << 30);
		dmaManagement |= dmaChanEnable | (dmaTransStart << 1)
			| (chanLatencyTimer << 8);
		/* write DMA register, start DMA engine */
		smi_write(port->DMA_CHAN0_ADDR_LOW, dmaMemPtrLow);
		smi_write(port->DMA_CHAN0_ADDR_HI, dmaMemPtrHi);
		smi_write(port->DMA_CHAN0_CONTROL, dmaCtlReg);
	}
	/* Setup Channel-1 */
	if (port->_dmaInterruptCH1) {
		totalLength = SMI_TS_DMA_BUF_SIZE;
		mem = port->dma_addr[1];
		dmaMemPtrLow = mem & 0xffffffff;
		dmaMemPtrHi = mem >> 32;
		dmaCtlReg = (totalLength) | (tlpTransUnit << 22) | (tlpTc << 25)
			| (tlpTd << 28) | (tlpEp << 29) | (tlpAttr << 30);
		dmaManagement |= (dmaChanEnable << 16) | (dmaTransStart << 17)
			| (chanLatencyTimer << 24);
		/* write DMA register, start DMA engine */
		smi_write(port->DMA_CHAN1_ADDR_LOW, dmaMemPtrLow);
		smi_write(port->DMA_CHAN1_ADDR_HI, dmaMemPtrHi);
		smi_write(port->DMA_CHAN1_CONTROL, dmaCtlReg);
	}
	return dmaManagement;
}

static int smi_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
	struct smi_port *port = dvbdmx->priv;
	struct smi_dev *dev = port->dev;
	u32 dmaManagement;

	if (port->users++ == 0) {
		dmaManagement = smi_config_DMA(port);
		smi_port_clearInterrupt(port);
		smi_port_enableInterrupt(port);
		smi_write(port->DMA_MANAGEMENT, dmaManagement);
		tasklet_enable(&port->tasklet);
	}
	return port->users;
}

static int smi_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
	struct smi_port *port = dvbdmx->priv;
	struct smi_dev *dev = port->dev;

	if (--port->users)
		return port->users;

	tasklet_disable(&port->tasklet);
	smi_port_disableInterrupt(port);
	smi_clear(port->DMA_MANAGEMENT, 0x30003);
	return 0;
}

static int smi_dvb_init(struct smi_port *port)
{
	int ret;
	struct dvb_adapter *adap = &port->dvb_adapter;
	struct dvb_demux *dvbdemux = &port->demux;

	dev_dbg(&port->dev->pci_dev->dev,
		"%s, port %d\n", __func__, port->idx);

	ret = dvb_register_adapter(adap, "SMI_DVB", THIS_MODULE,
				   &port->dev->pci_dev->dev,
				   adapter_nr);
	if (ret < 0) {
		dev_err(&port->dev->pci_dev->dev, "Fail to register DVB adapter.\n");
		return ret;
	}
	ret = my_dvb_dmx_ts_card_init(dvbdemux, "SW demux",
				      smi_start_feed,
				      smi_stop_feed, port);
	if (ret < 0)
		goto err_del_dvb_register_adapter;

	ret = my_dvb_dmxdev_ts_card_init(&port->dmxdev, &port->demux,
					 &port->hw_frontend,
					 &port->mem_frontend, adap);
	if (ret < 0)
		goto err_del_dvb_dmx;

	ret = dvb_net_init(adap, &port->dvbnet, port->dmxdev.demux);
	if (ret < 0)
		goto err_del_dvb_dmxdev;
	return 0;
err_del_dvb_dmxdev:
	dvbdemux->dmx.close(&dvbdemux->dmx);
	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &port->hw_frontend);
	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &port->mem_frontend);
	dvb_dmxdev_release(&port->dmxdev);
err_del_dvb_dmx:
	dvb_dmx_release(&port->demux);
err_del_dvb_register_adapter:
	dvb_unregister_adapter(&port->dvb_adapter);
	return ret;
}

static void smi_dvb_exit(struct smi_port *port)
{
	struct dvb_demux *dvbdemux = &port->demux;

	dvb_net_release(&port->dvbnet);

	dvbdemux->dmx.close(&dvbdemux->dmx);
	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &port->hw_frontend);
	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &port->mem_frontend);
	dvb_dmxdev_release(&port->dmxdev);
	dvb_dmx_release(&port->demux);

	dvb_unregister_adapter(&port->dvb_adapter);
}

static int smi_port_attach(struct smi_dev *dev,
		struct smi_port *port, int index)
{
	int ret, dmachs;

	port->dev = dev;
	port->idx = index;
	port->fe_type = (index == 0) ? dev->info->fe_0 : dev->info->fe_1;
	dmachs = (index == 0) ? dev->info->ts_0 : dev->info->ts_1;
	/* port init.*/
	ret = smi_port_init(port, dmachs);
	if (ret < 0)
		return ret;
	/* dvb init.*/
	ret = smi_dvb_init(port);
	if (ret < 0)
		goto err_del_port_init;
	/* fe init.*/
	ret = smi_fe_init(port);
	if (ret < 0)
		goto err_del_dvb_init;
	return 0;
err_del_dvb_init:
	smi_dvb_exit(port);
err_del_port_init:
	smi_port_exit(port);
	return ret;
}

static void smi_port_detach(struct smi_port *port)
{
	smi_fe_exit(port);
	smi_dvb_exit(port);
	smi_port_exit(port);
}

static int smi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
	struct smi_dev *dev;
	int ret = -ENOMEM;

	if (pci_enable_device(pdev) < 0)
		return -ENODEV;

	dev = kzalloc(sizeof(struct smi_dev), GFP_KERNEL);
	if (!dev) {
		ret = -ENOMEM;
		goto err_pci_disable_device;
	}

	dev->pci_dev = pdev;
	pci_set_drvdata(pdev, dev);
	dev->info = (struct smi_cfg_info *) id->driver_data;
	dev_info(&dev->pci_dev->dev,
		"card detected: %s\n", dev->info->name);

	dev->nr = dev->info->type;
	dev->lmmio = ioremap(pci_resource_start(dev->pci_dev, 0),
			    pci_resource_len(dev->pci_dev, 0));
	if (!dev->lmmio) {
		ret = -ENOMEM;
		goto err_kfree;
	}

	/* should we set to 32bit DMA? */
	ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
	if (ret < 0)
		goto err_pci_iounmap;

	pci_set_master(pdev);

	ret = smi_hw_init(dev);
	if (ret < 0)
		goto err_pci_iounmap;

	ret = smi_i2c_init(dev);
	if (ret < 0)
		goto err_pci_iounmap;

	if (dev->info->ts_0) {
		ret = smi_port_attach(dev, &dev->ts_port[0], 0);
		if (ret < 0)
			goto err_del_i2c_adaptor;
	}

	if (dev->info->ts_1) {
		ret = smi_port_attach(dev, &dev->ts_port[1], 1);
		if (ret < 0)
			goto err_del_port0_attach;
	}

#ifdef CONFIG_PCI_MSI /* to do msi interrupt.???*/
	if (pci_msi_enabled())
		ret = pci_enable_msi(dev->pci_dev);
	if (ret)
		dev_info(&dev->pci_dev->dev, "MSI not available.\n");
#endif

	ret = request_irq(dev->pci_dev->irq, smi_irq_handler,
			   IRQF_SHARED, "SMI_PCIE", dev);
	if (ret < 0)
		goto err_del_port1_attach;

	return 0;

err_del_port1_attach:
	if (dev->info->ts_1)
		smi_port_detach(&dev->ts_port[1]);
err_del_port0_attach:
	if (dev->info->ts_0)
		smi_port_detach(&dev->ts_port[0]);
err_del_i2c_adaptor:
	smi_i2c_exit(dev);
err_pci_iounmap:
	iounmap(dev->lmmio);
err_kfree:
	pci_set_drvdata(pdev, NULL);
	kfree(dev);
err_pci_disable_device:
	pci_disable_device(pdev);
	return ret;
}

static void smi_remove(struct pci_dev *pdev)
{
	struct smi_dev *dev = pci_get_drvdata(pdev);

	smi_write(MSI_INT_ENA_CLR, ALL_INT);
	free_irq(dev->pci_dev->irq, dev);
#ifdef CONFIG_PCI_MSI
	pci_disable_msi(dev->pci_dev);
#endif
	if (dev->info->ts_1)
		smi_port_detach(&dev->ts_port[1]);
	if (dev->info->ts_0)
		smi_port_detach(&dev->ts_port[0]);

	smi_i2c_exit(dev);
	iounmap(dev->lmmio);
	pci_set_drvdata(pdev, NULL);
	pci_disable_device(pdev);
	kfree(dev);
}

/* DVBSky cards */
static struct smi_cfg_info dvbsky_s950_cfg = {
	.type = SMI_DVBSKY_S950,
	.name = "DVBSky S950 V3",
	.ts_0 = SMI_TS_NULL,
	.ts_1 = SMI_TS_DMA_BOTH,
	.fe_0 = DVBSKY_FE_NULL,
	.fe_1 = DVBSKY_FE_M88DS3103,
};

static struct smi_cfg_info dvbsky_s952_cfg = {
	.type = SMI_DVBSKY_S952,
	.name = "DVBSky S952 V3",
	.ts_0 = SMI_TS_DMA_BOTH,
	.ts_1 = SMI_TS_DMA_BOTH,
	.fe_0 = DVBSKY_FE_M88RS6000,
	.fe_1 = DVBSKY_FE_M88RS6000,
};

static struct smi_cfg_info dvbsky_t9580_cfg = {
	.type = SMI_DVBSKY_T9580,
	.name = "DVBSky T9580 V3",
	.ts_0 = SMI_TS_DMA_BOTH,
	.ts_1 = SMI_TS_DMA_BOTH,
	.fe_0 = DVBSKY_FE_SIT2,
	.fe_1 = DVBSKY_FE_M88DS3103,
};

/* PCI IDs */
#define SMI_ID(_subvend, _subdev, _driverdata) {	\
	.vendor      = SMI_VID,    .device    = SMI_PID, \
	.subvendor   = _subvend, .subdevice = _subdev, \
	.driver_data = (unsigned long)&_driverdata }

static const struct pci_device_id smi_id_table[] = {
	SMI_ID(0x4254, 0x0550, dvbsky_s950_cfg),
	SMI_ID(0x4254, 0x0552, dvbsky_s952_cfg),
	SMI_ID(0x4254, 0x5580, dvbsky_t9580_cfg),
	{0}
};
MODULE_DEVICE_TABLE(pci, smi_id_table);

static struct pci_driver smipcie_driver = {
	.name = "SMI PCIe driver",
	.id_table = smi_id_table,
	.probe = smi_probe,
	.remove = smi_remove,
};

module_pci_driver(smipcie_driver);

MODULE_AUTHOR("Max nibble <nibble.max@gmail.com>");
MODULE_DESCRIPTION("SMI PCIe driver");
MODULE_LICENSE("GPL");