aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/video/cx88/cx88-mpeg.c
blob: 317a2a3f9cc1bdd59d923306febe9d901e3742f6 (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
/*
 *
 *  Support for the mpeg transport stream transfers
 *  PCI function #2 of the cx2388x.
 *
 *    (c) 2004 Jelle Foks <jelle@foks.8m.com>
 *    (c) 2004 Chris Pascoe <c.pascoe@itee.uq.edu.au>
 *    (c) 2004 Gerd Knorr <kraxel@bytesex.org>
 *
 *  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.
 *
 *  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.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <asm/delay.h>

#include "cx88.h"

/* ------------------------------------------------------------------ */

MODULE_DESCRIPTION("mpeg driver for cx2388x based TV cards");
MODULE_AUTHOR("Jelle Foks <jelle@foks.8m.com>");
MODULE_AUTHOR("Chris Pascoe <c.pascoe@itee.uq.edu.au>");
MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
MODULE_LICENSE("GPL");

static unsigned int debug = 0;
module_param(debug,int,0644);
MODULE_PARM_DESC(debug,"enable debug messages [mpeg]");

#define dprintk(level,fmt, arg...)	if (debug >= level) \
	printk(KERN_DEBUG "%s/2-mpeg: " fmt, dev->core->name, ## arg)

#define mpeg_dbg(level,fmt, arg...)	if (debug >= level) \
	printk(KERN_DEBUG "%s/2-mpeg: " fmt, core->name, ## arg)

#if defined(CONFIG_MODULES) && defined(MODULE)
static void request_module_async(struct work_struct *work)
{
	struct cx8802_dev *dev=container_of(work, struct cx8802_dev, request_module_wk);

	if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_DVB)
		request_module("cx88-dvb");
	if (cx88_boards[dev->core->board].mpeg & CX88_MPEG_BLACKBIRD)
		request_module("cx88-blackbird");
}

static void request_modules(struct cx8802_dev *dev)
{
	INIT_WORK(&dev->request_module_wk, request_module_async);
	schedule_work(&dev->request_module_wk);
}
#else
#define request_modules(dev)
#endif /* CONFIG_MODULES */


static LIST_HEAD(cx8802_devlist);
/* ------------------------------------------------------------------ */

static int cx8802_start_dma(struct cx8802_dev    *dev,
			    struct cx88_dmaqueue *q,
			    struct cx88_buffer   *buf)
{
	struct cx88_core *core = dev->core;

	dprintk(1, "cx8802_start_dma w: %d, h: %d, f: %d\n", dev->width, dev->height, buf->vb.field);

	/* setup fifo + format */
	cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28],
				dev->ts_packet_size, buf->risc.dma);

	/* write TS length to chip */
	cx_write(MO_TS_LNGTH, buf->vb.width);

	/* FIXME: this needs a review.
	 * also: move to cx88-blackbird + cx88-dvb source files? */

	dprintk( 1, "core->active_type_id = 0x%08x\n", core->active_type_id);

	if ( (core->active_type_id == CX88_MPEG_DVB) &&
		(cx88_boards[core->board].mpeg & CX88_MPEG_DVB) ) {

		dprintk( 1, "cx8802_start_dma doing .dvb\n");
		/* negedge driven & software reset */
		cx_write(TS_GEN_CNTRL, 0x0040 | dev->ts_gen_cntrl);
		udelay(100);
		cx_write(MO_PINMUX_IO, 0x00);
		cx_write(TS_HW_SOP_CNTRL,0x47<<16|188<<4|0x01);
		switch (core->board) {
		case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_Q:
		case CX88_BOARD_DVICO_FUSIONHDTV_3_GOLD_T:
		case CX88_BOARD_DVICO_FUSIONHDTV_5_GOLD:
		case CX88_BOARD_PCHDTV_HD5500:
			cx_write(TS_SOP_STAT, 1<<13);
			break;
		case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
		case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
			cx_write(MO_PINMUX_IO, 0x88); /* Enable MPEG parallel IO and video signal pins */
			udelay(100);
			break;
		case CX88_BOARD_HAUPPAUGE_HVR1300:
			break;
		default:
			cx_write(TS_SOP_STAT, 0x00);
			break;
		}
		cx_write(TS_GEN_CNTRL, dev->ts_gen_cntrl);
		udelay(100);
	} else if ( (core->active_type_id == CX88_MPEG_BLACKBIRD) &&
		(cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) ) {
		dprintk( 1, "cx8802_start_dma doing .blackbird\n");
		cx_write(MO_PINMUX_IO, 0x88); /* enable MPEG parallel IO */

		cx_write(TS_GEN_CNTRL, 0x46); /* punctured clock TS & posedge driven & software reset */
		udelay(100);

		cx_write(TS_HW_SOP_CNTRL, 0x408); /* mpeg start byte */
		cx_write(TS_VALERR_CNTRL, 0x2000);

		cx_write(TS_GEN_CNTRL, 0x06); /* punctured clock TS & posedge driven */
		udelay(100);
	} else {
		printk( "%s() Failed. Unsupported value in .mpeg (0x%08x)\n", __FUNCTION__,
			cx88_boards[core->board].mpeg );
		return -EINVAL;
	}

	/* reset counter */
	cx_write(MO_TS_GPCNTRL, GP_COUNT_CONTROL_RESET);
	q->count = 1;

	/* enable irqs */
	dprintk( 1, "setting the interrupt mask\n" );
	cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x04);
	cx_set(MO_TS_INTMSK,  0x1f0011);

	/* start dma */
	cx_set(MO_DEV_CNTRL2, (1<<5));
	cx_set(MO_TS_DMACNTRL, 0x11);
	return 0;
}

static int cx8802_stop_dma(struct cx8802_dev *dev)
{
	struct cx88_core *core = dev->core;
	dprintk( 1, "cx8802_stop_dma\n" );

	/* stop dma */
	cx_clear(MO_TS_DMACNTRL, 0x11);

	/* disable irqs */
	cx_clear(MO_PCI_INTMSK, 0x000004);
	cx_clear(MO_TS_INTMSK, 0x1f0011);

	/* Reset the controller */
	cx_write(TS_GEN_CNTRL, 0xcd);
	return 0;
}

static int cx8802_restart_queue(struct cx8802_dev    *dev,
				struct cx88_dmaqueue *q)
{
	struct cx88_buffer *buf;
	struct list_head *item;

       dprintk( 1, "cx8802_restart_queue\n" );
	if (list_empty(&q->active))
	{
	       struct cx88_buffer *prev;
	       prev = NULL;

	       dprintk(1, "cx8802_restart_queue: queue is empty\n" );

	       for (;;) {
		       if (list_empty(&q->queued))
			       return 0;
		       buf = list_entry(q->queued.next, struct cx88_buffer, vb.queue);
		       if (NULL == prev) {
			       list_del(&buf->vb.queue);
			       list_add_tail(&buf->vb.queue,&q->active);
			       cx8802_start_dma(dev, q, buf);
			       buf->vb.state = STATE_ACTIVE;
			       buf->count    = q->count++;
			       mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
			       dprintk(1,"[%p/%d] restart_queue - first active\n",
				       buf,buf->vb.i);

		       } else if (prev->vb.width  == buf->vb.width  &&
				  prev->vb.height == buf->vb.height &&
				  prev->fmt       == buf->fmt) {
			       list_del(&buf->vb.queue);
			       list_add_tail(&buf->vb.queue,&q->active);
			       buf->vb.state = STATE_ACTIVE;
			       buf->count    = q->count++;
			       prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
			       dprintk(1,"[%p/%d] restart_queue - move to active\n",
				       buf,buf->vb.i);
		       } else {
			       return 0;
		       }
		       prev = buf;
	       }
		return 0;
	}

	buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
	dprintk(2,"restart_queue [%p/%d]: restart dma\n",
		buf, buf->vb.i);
	cx8802_start_dma(dev, q, buf);
	list_for_each(item,&q->active) {
		buf = list_entry(item, struct cx88_buffer, vb.queue);
		buf->count = q->count++;
	}
	mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
	return 0;
}

/* ------------------------------------------------------------------ */

int cx8802_buf_prepare(struct videobuf_queue *q, struct cx8802_dev *dev,
			struct cx88_buffer *buf, enum v4l2_field field)
{
	int size = dev->ts_packet_size * dev->ts_packet_count;
	int rc;

	dprintk(1, "%s: %p\n", __FUNCTION__, buf);
	if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
		return -EINVAL;

	if (STATE_NEEDS_INIT == buf->vb.state) {
		buf->vb.width  = dev->ts_packet_size;
		buf->vb.height = dev->ts_packet_count;
		buf->vb.size   = size;
		buf->vb.field  = field /*V4L2_FIELD_TOP*/;

		if (0 != (rc = videobuf_iolock(q,&buf->vb,NULL)))
			goto fail;
		cx88_risc_databuffer(dev->pci, &buf->risc,
				     buf->vb.dma.sglist,
				     buf->vb.width, buf->vb.height);
	}
	buf->vb.state = STATE_PREPARED;
	return 0;

 fail:
	cx88_free_buffer(q,buf);
	return rc;
}

void cx8802_buf_queue(struct cx8802_dev *dev, struct cx88_buffer *buf)
{
	struct cx88_buffer    *prev;
	struct cx88_dmaqueue  *cx88q = &dev->mpegq;

	dprintk( 1, "cx8802_buf_queue\n" );
	/* add jump to stopper */
	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
	buf->risc.jmp[1] = cpu_to_le32(cx88q->stopper.dma);

	if (list_empty(&cx88q->active)) {
		dprintk( 1, "queue is empty - first active\n" );
		list_add_tail(&buf->vb.queue,&cx88q->active);
		cx8802_start_dma(dev, cx88q, buf);
		buf->vb.state = STATE_ACTIVE;
		buf->count    = cx88q->count++;
		mod_timer(&cx88q->timeout, jiffies+BUFFER_TIMEOUT);
		dprintk(1,"[%p/%d] %s - first active\n",
			buf, buf->vb.i, __FUNCTION__);

	} else {
		dprintk( 1, "queue is not empty - append to active\n" );
		prev = list_entry(cx88q->active.prev, struct cx88_buffer, vb.queue);
		list_add_tail(&buf->vb.queue,&cx88q->active);
		buf->vb.state = STATE_ACTIVE;
		buf->count    = cx88q->count++;
		prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
		dprintk( 1, "[%p/%d] %s - append to active\n",
			buf, buf->vb.i, __FUNCTION__);
	}
}

/* ----------------------------------------------------------- */

static void do_cancel_buffers(struct cx8802_dev *dev, char *reason, int restart)
{
	struct cx88_dmaqueue *q = &dev->mpegq;
	struct cx88_buffer *buf;
	unsigned long flags;

	spin_lock_irqsave(&dev->slock,flags);
	while (!list_empty(&q->active)) {
		buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
		list_del(&buf->vb.queue);
		buf->vb.state = STATE_ERROR;
		wake_up(&buf->vb.done);
		dprintk(1,"[%p/%d] %s - dma=0x%08lx\n",
			buf, buf->vb.i, reason, (unsigned long)buf->risc.dma);
	}
	if (restart)
	{
		dprintk(1, "restarting queue\n" );
		cx8802_restart_queue(dev,q);
	}
	spin_unlock_irqrestore(&dev->slock,flags);
}

void cx8802_cancel_buffers(struct cx8802_dev *dev)
{
	struct cx88_dmaqueue *q = &dev->mpegq;

	dprintk( 1, "cx8802_cancel_buffers" );
	del_timer_sync(&q->timeout);
	cx8802_stop_dma(dev);
	do_cancel_buffers(dev,"cancel",0);
}

static void cx8802_timeout(unsigned long data)
{
	struct cx8802_dev *dev = (struct cx8802_dev*)data;

	dprintk(1, "%s\n",__FUNCTION__);

	if (debug)
		cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
	cx8802_stop_dma(dev);
	do_cancel_buffers(dev,"timeout",1);
}

static char *cx88_mpeg_irqs[32] = {
	"ts_risci1", NULL, NULL, NULL,
	"ts_risci2", NULL, NULL, NULL,
	"ts_oflow",  NULL, NULL, NULL,
	"ts_sync",   NULL, NULL, NULL,
	"opc_err", "par_err", "rip_err", "pci_abort",
	"ts_err?",
};

static void cx8802_mpeg_irq(struct cx8802_dev *dev)
{
	struct cx88_core *core = dev->core;
	u32 status, mask, count;

	dprintk( 1, "cx8802_mpeg_irq\n" );
	status = cx_read(MO_TS_INTSTAT);
	mask   = cx_read(MO_TS_INTMSK);
	if (0 == (status & mask))
		return;

	cx_write(MO_TS_INTSTAT, status);

	if (debug || (status & mask & ~0xff))
		cx88_print_irqbits(core->name, "irq mpeg ",
				   cx88_mpeg_irqs, ARRAY_SIZE(cx88_mpeg_irqs),
				   status, mask);

	/* risc op code error */
	if (status & (1 << 16)) {
		printk(KERN_WARNING "%s: mpeg risc op code error\n",core->name);
		cx_clear(MO_TS_DMACNTRL, 0x11);
		cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH28]);
	}

	/* risc1 y */
	if (status & 0x01) {
		dprintk( 1, "wake up\n" );
		spin_lock(&dev->slock);
		count = cx_read(MO_TS_GPCNT);
		cx88_wakeup(dev->core, &dev->mpegq, count);
		spin_unlock(&dev->slock);
	}

	/* risc2 y */
	if (status & 0x10) {
		spin_lock(&dev->slock);
		cx8802_restart_queue(dev,&dev->mpegq);
		spin_unlock(&dev->slock);
	}

	/* other general errors */
	if (status & 0x1f0100) {
		dprintk( 0, "general errors: 0x%08x\n", status & 0x1f0100 );
		spin_lock(&dev->slock);
		cx8802_stop_dma(dev);
		cx8802_restart_queue(dev,&dev->mpegq);
		spin_unlock(&dev->slock);
	}
}

#define MAX_IRQ_LOOP 10

static irqreturn_t cx8802_irq(int irq, void *dev_id)
{
	struct cx8802_dev *dev = dev_id;
	struct cx88_core *core = dev->core;
	u32 status;
	int loop, handled = 0;

	for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
		status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x04);
		if (0 == status)
			goto out;
		dprintk( 1, "cx8802_irq\n" );
		dprintk( 1, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
		dprintk( 1, "    status: %d\n", status );
		handled = 1;
		cx_write(MO_PCI_INTSTAT, status);

		if (status & core->pci_irqmask)
			cx88_core_irq(core,status);
		if (status & 0x04)
			cx8802_mpeg_irq(dev);
	};
	if (MAX_IRQ_LOOP == loop) {
		dprintk( 0, "clearing mask\n" );
		printk(KERN_WARNING "%s/0: irq loop -- clearing mask\n",
		       core->name);
		cx_write(MO_PCI_INTMSK,0);
	}

 out:
	return IRQ_RETVAL(handled);
}

/* ----------------------------------------------------------- */
/* exported stuff                                              */

int cx8802_init_common(struct cx8802_dev *dev)
{
	struct cx88_core *core = dev->core;
	int err;

	/* pci init */
	if (pci_enable_device(dev->pci))
		return -EIO;
	pci_set_master(dev->pci);
	if (!pci_dma_supported(dev->pci,DMA_32BIT_MASK)) {
		printk("%s/2: Oops: no 32bit PCI DMA ???\n",dev->core->name);
		return -EIO;
	}

	pci_read_config_byte(dev->pci, PCI_CLASS_REVISION, &dev->pci_rev);
	pci_read_config_byte(dev->pci, PCI_LATENCY_TIMER,  &dev->pci_lat);
	printk(KERN_INFO "%s/2: found at %s, rev: %d, irq: %d, "
	       "latency: %d, mmio: 0x%llx\n", dev->core->name,
	       pci_name(dev->pci), dev->pci_rev, dev->pci->irq,
	       dev->pci_lat,(unsigned long long)pci_resource_start(dev->pci,0));

	/* initialize driver struct */
	spin_lock_init(&dev->slock);

	/* init dma queue */
	INIT_LIST_HEAD(&dev->mpegq.active);
	INIT_LIST_HEAD(&dev->mpegq.queued);
	dev->mpegq.timeout.function = cx8802_timeout;
	dev->mpegq.timeout.data     = (unsigned long)dev;
	init_timer(&dev->mpegq.timeout);
	cx88_risc_stopper(dev->pci,&dev->mpegq.stopper,
			  MO_TS_DMACNTRL,0x11,0x00);

	/* get irq */
	err = request_irq(dev->pci->irq, cx8802_irq,
			  IRQF_SHARED | IRQF_DISABLED, dev->core->name, dev);
	if (err < 0) {
		printk(KERN_ERR "%s: can't get IRQ %d\n",
		       dev->core->name, dev->pci->irq);
		return err;
	}
	cx_set(MO_PCI_INTMSK, core->pci_irqmask);

	/* everything worked */
	pci_set_drvdata(dev->pci,dev);
	return 0;
}

void cx8802_fini_common(struct cx8802_dev *dev)
{
	dprintk( 2, "cx8802_fini_common\n" );
	cx8802_stop_dma(dev);
	pci_disable_device(dev->pci);

	/* unregister stuff */
	free_irq(dev->pci->irq, dev);
	pci_set_drvdata(dev->pci, NULL);

	/* free memory */
	btcx_riscmem_free(dev->pci,&dev->mpegq.stopper);
}

/* ----------------------------------------------------------- */

int cx8802_suspend_common(struct pci_dev *pci_dev, pm_message_t state)
{
	struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
	struct cx88_core *core = dev->core;

	/* stop mpeg dma */
	spin_lock(&dev->slock);
	if (!list_empty(&dev->mpegq.active)) {
		dprintk( 2, "suspend\n" );
		printk("%s: suspend mpeg\n", core->name);
		cx8802_stop_dma(dev);
		del_timer(&dev->mpegq.timeout);
	}
	spin_unlock(&dev->slock);

	/* FIXME -- shutdown device */
	cx88_shutdown(dev->core);

	pci_save_state(pci_dev);
	if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
		pci_disable_device(pci_dev);
		dev->state.disabled = 1;
	}
	return 0;
}

int cx8802_resume_common(struct pci_dev *pci_dev)
{
	struct cx8802_dev *dev = pci_get_drvdata(pci_dev);
	struct cx88_core *core = dev->core;
	int err;

	if (dev->state.disabled) {
		err=pci_enable_device(pci_dev);
		if (err) {
			printk(KERN_ERR "%s: can't enable device\n",
					       dev->core->name);
			return err;
		}
		dev->state.disabled = 0;
	}
	err=pci_set_power_state(pci_dev, PCI_D0);
	if (err) {
		printk(KERN_ERR "%s: can't enable device\n",
					       dev->core->name);
		pci_disable_device(pci_dev);
		dev->state.disabled = 1;

		return err;
	}
	pci_restore_state(pci_dev);

	/* FIXME: re-initialize hardware */
	cx88_reset(dev->core);

	/* restart video+vbi capture */
	spin_lock(&dev->slock);
	if (!list_empty(&dev->mpegq.active)) {
		printk("%s: resume mpeg\n", core->name);
		cx8802_restart_queue(dev,&dev->mpegq);
	}
	spin_unlock(&dev->slock);

	return 0;
}

struct cx8802_dev * cx8802_get_device(struct inode *inode)
{
	int minor = iminor(inode);
	struct cx8802_dev *h = NULL;
	struct list_head *list;

	list_for_each(list,&cx8802_devlist) {
		h = list_entry(list, struct cx8802_dev, devlist);
		if (h->mpeg_dev->minor == minor)
			return h;
	}

	return NULL;
}

struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board_type btype)
{
	struct cx8802_dev *h = NULL;
	struct cx8802_driver *d = NULL;
	struct list_head *list;
	struct list_head *list2;

	list_for_each(list,&cx8802_devlist) {
		h = list_entry(list, struct cx8802_dev, devlist);
		if (h != dev)
			continue;

		list_for_each(list2, &h->drvlist.devlist) {
			d = list_entry(list2, struct cx8802_driver, devlist);

			/* only unregister the correct driver type */
			if (d->type_id == btype) {
				return d;
			}
		}
	}

	return NULL;
}

/* Driver asked for hardware access. */
static int cx8802_request_acquire(struct cx8802_driver *drv)
{
	struct cx88_core *core = drv->core;

	/* Fail a request for hardware if the device is busy. */
	if (core->active_type_id != CX88_BOARD_NONE)
		return -EBUSY;

	if (drv->advise_acquire)
	{
		core->active_type_id = drv->type_id;
		drv->advise_acquire(drv);

		mpeg_dbg(1,"%s() Post acquire GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
	}

	return 0;
}

/* Driver asked to release hardware. */
static int cx8802_request_release(struct cx8802_driver *drv)
{
	struct cx88_core *core = drv->core;

	if (drv->advise_release)
	{
		drv->advise_release(drv);
		core->active_type_id = CX88_BOARD_NONE;
		mpeg_dbg(1,"%s() Post release GPIO=%x\n", __FUNCTION__, cx_read(MO_GP0_IO));
	}

	return 0;
}

static int cx8802_check_driver(struct cx8802_driver *drv)
{
	if (drv == NULL)
		return -ENODEV;

	if ((drv->type_id != CX88_MPEG_DVB) &&
		(drv->type_id != CX88_MPEG_BLACKBIRD))
		return -EINVAL;

	if ((drv->hw_access != CX8802_DRVCTL_SHARED) &&
		(drv->hw_access != CX8802_DRVCTL_EXCLUSIVE))
		return -EINVAL;

	if ((drv->probe == NULL) ||
		(drv->remove == NULL) ||
		(drv->advise_acquire == NULL) ||
		(drv->advise_release == NULL))
		return -EINVAL;

	return 0;
}

int cx8802_register_driver(struct cx8802_driver *drv)
{
	struct cx8802_dev *h;
	struct cx8802_driver *driver;
	struct list_head *list;
	int err = 0, i = 0;

	printk(KERN_INFO "%s() ->registering driver type=%s access=%s\n", __FUNCTION__ ,
		drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird",
		drv->hw_access == CX8802_DRVCTL_SHARED ? "shared" : "exclusive");

	if ((err = cx8802_check_driver(drv)) != 0) {
		printk(KERN_INFO "%s() cx8802_driver is invalid\n", __FUNCTION__ );
		return err;
	}

	list_for_each(list,&cx8802_devlist) {
		h = list_entry(list, struct cx8802_dev, devlist);

		printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
			h->core->name,h->pci->subsystem_vendor,
			h->pci->subsystem_device,cx88_boards[h->core->board].name,
			h->core->board);

		/* Bring up a new struct for each driver instance */
		driver = kzalloc(sizeof(*drv),GFP_KERNEL);
		if (driver == NULL)
			return -ENOMEM;

		/* Snapshot of the driver registration data */
		drv->core = h->core;
		drv->suspend = cx8802_suspend_common;
		drv->resume = cx8802_resume_common;
		drv->request_acquire = cx8802_request_acquire;
		drv->request_release = cx8802_request_release;
		memcpy(driver, drv, sizeof(*driver));

		err = drv->probe(driver);
		if (err == 0) {
			i++;
			mutex_lock(&drv->core->lock);
			list_add_tail(&driver->devlist,&h->drvlist.devlist);
			mutex_unlock(&drv->core->lock);
		} else {
			printk(KERN_ERR "%s() ->probe failed err = %d\n", __FUNCTION__, err);
		}

	}
	if (i == 0)
		err = -ENODEV;
	else
		err = 0;

	return err;
}

int cx8802_unregister_driver(struct cx8802_driver *drv)
{
	struct cx8802_dev *h;
	struct cx8802_driver *d;
	struct list_head *list;
	struct list_head *list2, *q;
	int err = 0, i = 0;

	printk(KERN_INFO "%s() ->unregistering driver type=%s\n", __FUNCTION__ ,
		drv->type_id == CX88_MPEG_DVB ? "dvb" : "blackbird");

	list_for_each(list,&cx8802_devlist) {
		i++;
		h = list_entry(list, struct cx8802_dev, devlist);

		printk(KERN_INFO "CORE %s: subsystem: %04x:%04x, board: %s [card=%d]\n",
			h->core->name,h->pci->subsystem_vendor,
			h->pci->subsystem_device,cx88_boards[h->core->board].name,
			h->core->board);

		list_for_each_safe(list2, q, &h->drvlist.devlist) {
			d = list_entry(list2, struct cx8802_driver, devlist);

			/* only unregister the correct driver type */
			if (d->type_id != drv->type_id)
				continue;

			err = d->remove(d);
			if (err == 0) {
				mutex_lock(&drv->core->lock);
				list_del(list2);
				mutex_unlock(&drv->core->lock);
			} else
				printk(KERN_ERR "%s() ->remove failed err = %d\n", __FUNCTION__, err);

		}

	}

	return err;
}

/* ----------------------------------------------------------- */
static int __devinit cx8802_probe(struct pci_dev *pci_dev,
			       const struct pci_device_id *pci_id)
{
	struct cx8802_dev *dev;
	struct cx88_core  *core;
	int err;

	/* general setup */
	core = cx88_core_get(pci_dev);
	if (NULL == core)
		return -EINVAL;

	printk("%s/2: cx2388x 8802 Driver Manager\n", core->name);

	err = -ENODEV;
	if (!cx88_boards[core->board].mpeg)
		goto fail_core;

	err = -ENOMEM;
	dev = kzalloc(sizeof(*dev),GFP_KERNEL);
	if (NULL == dev)
		goto fail_core;
	dev->pci = pci_dev;
	dev->core = core;

	err = cx8802_init_common(dev);
	if (err != 0)
		goto fail_free;

	INIT_LIST_HEAD(&dev->drvlist.devlist);
	list_add_tail(&dev->devlist,&cx8802_devlist);

	/* Maintain a reference so cx88-video can query the 8802 device. */
	core->dvbdev = dev;

	/* now autoload cx88-dvb or cx88-blackbird */
	request_modules(dev);
	return 0;

 fail_free:
	kfree(dev);
 fail_core:
	cx88_core_put(core,pci_dev);
	return err;
}

static void __devexit cx8802_remove(struct pci_dev *pci_dev)
{
	struct cx8802_dev *dev;
	struct cx8802_driver *h;
	struct list_head *list;

	dev = pci_get_drvdata(pci_dev);

	dprintk( 1, "%s\n", __FUNCTION__);

	list_for_each(list,&dev->drvlist.devlist) {
		h = list_entry(list, struct cx8802_driver, devlist);
		dprintk( 1, " ->driver\n");
		if (h->remove == NULL) {
			printk(KERN_ERR "%s .. skipping driver, no probe function\n", __FUNCTION__);
			continue;
		}
		printk(KERN_INFO "%s .. Removing driver type %d\n", __FUNCTION__, h->type_id);
		cx8802_unregister_driver(h);
		list_del(&dev->drvlist.devlist);
	}

	/* Destroy any 8802 reference. */
	dev->core->dvbdev = NULL;

	/* common */
	cx8802_fini_common(dev);
	cx88_core_put(dev->core,dev->pci);
	kfree(dev);
}

static struct pci_device_id cx8802_pci_tbl[] = {
	{
		.vendor       = 0x14f1,
		.device       = 0x8802,
		.subvendor    = PCI_ANY_ID,
		.subdevice    = PCI_ANY_ID,
	},{
		/* --- end of list --- */
	}
};
MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);

static struct pci_driver cx8802_pci_driver = {
	.name     = "cx88-mpeg driver manager",
	.id_table = cx8802_pci_tbl,
	.probe    = cx8802_probe,
	.remove   = __devexit_p(cx8802_remove),
};

static int cx8802_init(void)
{
	printk(KERN_INFO "cx2388x cx88-mpeg Driver Manager version %d.%d.%d loaded\n",
	       (CX88_VERSION_CODE >> 16) & 0xff,
	       (CX88_VERSION_CODE >>  8) & 0xff,
	       CX88_VERSION_CODE & 0xff);
#ifdef SNAPSHOT
	printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
	       SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
#endif
	return pci_register_driver(&cx8802_pci_driver);
}

static void cx8802_fini(void)
{
	pci_unregister_driver(&cx8802_pci_driver);
}

module_init(cx8802_init);
module_exit(cx8802_fini);
EXPORT_SYMBOL(cx8802_buf_prepare);
EXPORT_SYMBOL(cx8802_buf_queue);
EXPORT_SYMBOL(cx8802_cancel_buffers);

EXPORT_SYMBOL(cx8802_init_common);
EXPORT_SYMBOL(cx8802_fini_common);

EXPORT_SYMBOL(cx8802_register_driver);
EXPORT_SYMBOL(cx8802_unregister_driver);
EXPORT_SYMBOL(cx8802_get_device);
EXPORT_SYMBOL(cx8802_get_driver);
/* ----------------------------------------------------------- */
/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
 */