summaryrefslogtreecommitdiffstats
path: root/drivers/video/fbdev/kyro/fbdev.c
blob: b4b93054c5208fa4fda85d8202f54fb87006048b (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
/*
 *  linux/drivers/video/kyro/fbdev.c
 *
 *  Copyright (C) 2002 STMicroelectronics
 *  Copyright (C) 2003, 2004 Paul Mundt
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 */

#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/ioctl.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <linux/uaccess.h>

#include <video/kyro.h>

#include "STG4000Reg.h"
#include "STG4000Interface.h"

/*
 * PCI Definitions
 */
#define PCI_VENDOR_ID_ST	0x104a
#define PCI_DEVICE_ID_STG4000	0x0010

#define KHZ2PICOS(a) (1000000000UL/(a))

/****************************************************************************/
static struct fb_fix_screeninfo kyro_fix = {
	.id		= "ST Kyro",
	.type		= FB_TYPE_PACKED_PIXELS,
	.visual		= FB_VISUAL_TRUECOLOR,
	.accel		= FB_ACCEL_NONE,
};

static const struct fb_var_screeninfo kyro_var = {
	/* 640x480, 16bpp @ 60 Hz */
	.xres		= 640,
	.yres		= 480,
	.xres_virtual	= 640,
	.yres_virtual	= 480,
	.bits_per_pixel	= 16,
	.red		= { 11, 5, 0 },
	.green		= {  5, 6, 0 },
	.blue		= {  0, 5, 0 },
	.activate	= FB_ACTIVATE_NOW,
	.height		= -1,
	.width		= -1,
	.pixclock	= KHZ2PICOS(25175),
	.left_margin	= 48,
	.right_margin	= 16,
	.upper_margin	= 33,
	.lower_margin	= 10,
	.hsync_len	= 96,
	.vsync_len	= 2,
	.vmode		= FB_VMODE_NONINTERLACED,
};

typedef struct {
	STG4000REG __iomem *pSTGReg;	/* Virtual address of PCI register region */
	u32 ulNextFreeVidMem;	/* Offset from start of vid mem to next free region */
	u32 ulOverlayOffset;	/* Offset from start of vid mem to overlay */
	u32 ulOverlayStride;	/* Interleaved YUV and 422 mode Y stride */
	u32 ulOverlayUVStride;	/* 422 mode U & V stride */
} device_info_t;

/* global graphics card info structure (one per card) */
static device_info_t deviceInfo;

static char *mode_option = NULL;
static int nopan = 0;
static int nowrap = 1;
static int nomtrr = 0;

/* PCI driver prototypes */
static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
static void kyrofb_remove(struct pci_dev *pdev);

static struct fb_videomode kyro_modedb[] = {
	{
		/* 640x350 @ 85Hz */
		NULL, 85, 640, 350, KHZ2PICOS(31500),
		96, 32, 60, 32, 64, 3,
		FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 640x400 @ 85Hz */
		NULL, 85, 640, 400, KHZ2PICOS(31500),
		96, 32, 41, 1, 64, 3,
		FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 720x400 @ 85Hz */
		NULL, 85, 720, 400, KHZ2PICOS(35500),
		108, 36, 42, 1, 72, 3,
		FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 640x480 @ 60Hz */
		NULL, 60, 640, 480, KHZ2PICOS(25175),
		48, 16, 33, 10, 96, 2,
		0, FB_VMODE_NONINTERLACED
	}, {
		/* 640x480 @ 72Hz */
		NULL, 72, 640, 480, KHZ2PICOS(31500),
		128, 24, 28, 9, 40, 3,
		0, FB_VMODE_NONINTERLACED
	}, {
		/* 640x480 @ 75Hz */
		NULL, 75, 640, 480, KHZ2PICOS(31500),
		120, 16, 16, 1, 64, 3,
		0, FB_VMODE_NONINTERLACED
	}, {
		/* 640x480 @ 85Hz */
		NULL, 85, 640, 480, KHZ2PICOS(36000),
		80, 56, 25, 1, 56, 3,
		0, FB_VMODE_NONINTERLACED
	}, {
		/* 800x600 @ 56Hz */
		NULL, 56, 800, 600, KHZ2PICOS(36000),
		128, 24, 22, 1, 72, 2,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 800x600 @ 60Hz */
		NULL, 60, 800, 600, KHZ2PICOS(40000),
		88, 40, 23, 1, 128, 4,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 800x600 @ 72Hz */
		NULL, 72, 800, 600, KHZ2PICOS(50000),
		64, 56, 23, 37, 120, 6,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 800x600 @ 75Hz */
		NULL, 75, 800, 600, KHZ2PICOS(49500),
		160, 16, 21, 1, 80, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 800x600 @ 85Hz */
		NULL, 85, 800, 600, KHZ2PICOS(56250),
		152, 32, 27, 1, 64, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1024x768 @ 60Hz */
		NULL, 60, 1024, 768, KHZ2PICOS(65000),
		160, 24, 29, 3, 136, 6,
		0, FB_VMODE_NONINTERLACED
	}, {
		/* 1024x768 @ 70Hz */
		NULL, 70, 1024, 768, KHZ2PICOS(75000),
		144, 24, 29, 3, 136, 6,
		0, FB_VMODE_NONINTERLACED
	}, {
		/* 1024x768 @ 75Hz */
		NULL, 75, 1024, 768, KHZ2PICOS(78750),
		176, 16, 28, 1, 96, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1024x768 @ 85Hz */
		NULL, 85, 1024, 768, KHZ2PICOS(94500),
		208, 48, 36, 1, 96, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1152x864 @ 75Hz */
		NULL, 75, 1152, 864, KHZ2PICOS(108000),
		256, 64, 32, 1, 128, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1280x960 @ 60Hz */
		NULL, 60, 1280, 960, KHZ2PICOS(108000),
		312, 96, 36, 1, 112, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1280x960 @ 85Hz */
		NULL, 85, 1280, 960, KHZ2PICOS(148500),
		224, 64, 47, 1, 160, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1280x1024 @ 60Hz */
		NULL, 60, 1280, 1024, KHZ2PICOS(108000),
		248, 48, 38, 1, 112, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1280x1024 @ 75Hz */
		NULL, 75, 1280, 1024, KHZ2PICOS(135000),
		248, 16, 38, 1, 144, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1280x1024 @ 85Hz */
		NULL, 85, 1280, 1024, KHZ2PICOS(157500),
		224, 64, 44, 1, 160, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1600x1200 @ 60Hz */
		NULL, 60, 1600, 1200, KHZ2PICOS(162000),
		304, 64, 46, 1, 192, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1600x1200 @ 65Hz */
		NULL, 65, 1600, 1200, KHZ2PICOS(175500),
		304, 64, 46, 1, 192, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1600x1200 @ 70Hz */
		NULL, 70, 1600, 1200, KHZ2PICOS(189000),
		304, 64, 46, 1, 192, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1600x1200 @ 75Hz */
		NULL, 75, 1600, 1200, KHZ2PICOS(202500),
		304, 64, 46, 1, 192, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1600x1200 @ 85Hz */
		NULL, 85, 1600, 1200, KHZ2PICOS(229500),
		304, 64, 46, 1, 192, 3,
		FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1792x1344 @ 60Hz */
		NULL, 60, 1792, 1344, KHZ2PICOS(204750),
		328, 128, 46, 1, 200, 3,
		FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1792x1344 @ 75Hz */
		NULL, 75, 1792, 1344, KHZ2PICOS(261000),
		352, 96, 69, 1, 216, 3,
		FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1856x1392 @ 60Hz */
		NULL, 60, 1856, 1392, KHZ2PICOS(218250),
		352, 96, 43, 1, 224, 3,
		FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1856x1392 @ 75Hz */
		NULL, 75, 1856, 1392, KHZ2PICOS(288000),
		352, 128, 104, 1, 224, 3,
		FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1920x1440 @ 60Hz */
		NULL, 60, 1920, 1440, KHZ2PICOS(234000),
		344, 128, 56, 1, 208, 3,
		FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	}, {
		/* 1920x1440 @ 75Hz */
		NULL, 75, 1920, 1440, KHZ2PICOS(297000),
		352, 144, 56, 1, 224, 3,
		FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
	},
};
#define NUM_TOTAL_MODES	ARRAY_SIZE(kyro_modedb)

/*
 * This needs to be kept ordered corresponding to kyro_modedb.
 */
enum {
	VMODE_640_350_85,
	VMODE_640_400_85,
	VMODE_720_400_85,
	VMODE_640_480_60,
	VMODE_640_480_72,
	VMODE_640_480_75,
	VMODE_640_480_85,
	VMODE_800_600_56,
	VMODE_800_600_60,
	VMODE_800_600_72,
	VMODE_800_600_75,
	VMODE_800_600_85,
	VMODE_1024_768_60,
	VMODE_1024_768_70,
	VMODE_1024_768_75,
	VMODE_1024_768_85,
	VMODE_1152_864_75,
	VMODE_1280_960_60,
	VMODE_1280_960_85,
	VMODE_1280_1024_60,
	VMODE_1280_1024_75,
	VMODE_1280_1024_85,
	VMODE_1600_1200_60,
	VMODE_1600_1200_65,
	VMODE_1600_1200_70,
	VMODE_1600_1200_75,
	VMODE_1600_1200_85,
	VMODE_1792_1344_60,
	VMODE_1792_1344_75,
	VMODE_1856_1392_60,
	VMODE_1856_1392_75,
	VMODE_1920_1440_60,
	VMODE_1920_1440_75,
};

/* Accessors */
static int kyro_dev_video_mode_set(struct fb_info *info)
{
	struct kyrofb_info *par = info->par;

	/* Turn off display */
	StopVTG(deviceInfo.pSTGReg);
	DisableRamdacOutput(deviceInfo.pSTGReg);

	/* Bring us out of VGA and into Hi-Res mode, if not already. */
	DisableVGA(deviceInfo.pSTGReg);

	if (InitialiseRamdac(deviceInfo.pSTGReg,
			     info->var.bits_per_pixel,
			     info->var.xres, info->var.yres,
			     par->HSP, par->VSP, &par->PIXCLK) < 0)
		return -EINVAL;

	SetupVTG(deviceInfo.pSTGReg, par);

	ResetOverlayRegisters(deviceInfo.pSTGReg);

	/* Turn on display in new mode */
	EnableRamdacOutput(deviceInfo.pSTGReg);
	StartVTG(deviceInfo.pSTGReg);

	deviceInfo.ulNextFreeVidMem = info->var.xres * info->var.yres *
				      info->var.bits_per_pixel;
	deviceInfo.ulOverlayOffset = 0;

	return 0;
}

static int kyro_dev_overlay_create(u32 ulWidth,
				   u32 ulHeight, int bLinear)
{
	u32 offset;
	u32 stride, uvStride;

	if (deviceInfo.ulOverlayOffset != 0)
		/*
		 * Can only create one overlay without resetting the card or
		 * changing display mode
		 */
		return -EINVAL;

	ResetOverlayRegisters(deviceInfo.pSTGReg);

	/* Overlays are addressed in multiples of 16bytes or 32bytes, so make
	 * sure the start offset is on an appropriate boundary.
	 */
	offset = deviceInfo.ulNextFreeVidMem;
	if ((offset & 0x1f) != 0) {
		offset = (offset + 32L) & 0xffffffE0L;
	}

	if (CreateOverlaySurface(deviceInfo.pSTGReg, ulWidth, ulHeight,
				 bLinear, offset, &stride, &uvStride) < 0)
		return -EINVAL;

	deviceInfo.ulOverlayOffset = offset;
	deviceInfo.ulOverlayStride = stride;
	deviceInfo.ulOverlayUVStride = uvStride;
	deviceInfo.ulNextFreeVidMem = offset + (ulHeight * stride) + (ulHeight * 2 * uvStride);

	SetOverlayBlendMode(deviceInfo.pSTGReg, GLOBAL_ALPHA, 0xf, 0x0);

	return 0;
}

static int kyro_dev_overlay_viewport_set(u32 x, u32 y, u32 ulWidth, u32 ulHeight)
{
	if (deviceInfo.ulOverlayOffset == 0)
		/* probably haven't called CreateOverlay yet */
		return -EINVAL;

	if (ulWidth == 0 || ulWidth == 0xffffffff ||
	    ulHeight == 0 || ulHeight == 0xffffffff ||
	    (x < 2 && ulWidth + 2 == 0))
		return -EINVAL;

	/* Stop Ramdac Output */
	DisableRamdacOutput(deviceInfo.pSTGReg);

	SetOverlayViewPort(deviceInfo.pSTGReg,
			   x, y, x + ulWidth - 1, y + ulHeight - 1);

	EnableOverlayPlane(deviceInfo.pSTGReg);
	/* Start Ramdac Output */
	EnableRamdacOutput(deviceInfo.pSTGReg);

	return 0;
}

static inline unsigned long get_line_length(int x, int bpp)
{
	return (unsigned long)((((x*bpp)+31)&~31) >> 3);
}

static int kyrofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
	struct kyrofb_info *par = info->par;

	if (!var->pixclock)
		return -EINVAL;

	if (var->bits_per_pixel != 16 && var->bits_per_pixel != 32) {
		printk(KERN_WARNING "kyrofb: depth not supported: %u\n", var->bits_per_pixel);
		return -EINVAL;
	}

	switch (var->bits_per_pixel) {
	case 16:
		var->red.offset = 11;
		var->red.length = 5;
		var->green.offset = 5;
		var->green.length = 6;
		var->blue.length = 5;
		break;
	case 32:
		var->transp.offset = 24;
		var->red.offset = 16;
		var->green.offset = 8;
		var->blue.offset = 0;

		var->red.length = 8;
		var->green.length = 8;
		var->blue.length = 8;
		var->transp.length = 8;
		break;
	}

	/* Height/Width of picture in mm */
	var->height = var->width = -1;

	/* Timing information. All values are in picoseconds */

	/* par->PIXCLK is in 100Hz units. Convert to picoseconds -
	 * ensuring we do not exceed 32 bit precision
	 */
	/*
	 * XXX: Enabling this really screws over the pixclock value when we
	 * read it back with fbset. As such, leaving this commented out appears
	 * to do the right thing (at least for now) .. bearing in mind that we
	 * have infact already done the KHZ2PICOS conversion in both the modedb
	 * and kyro_var. -- PFM.
	 */
//	var->pixclock = 1000000000 / (par->PIXCLK / 10);

	/* the header file claims we should use picoseconds
	 * - nobody else does though, the all use pixels and lines
	 * of h and v sizes. Both options here.
	 */

	/*
	 * If we're being called by __fb_try_mode(), then we don't want to
	 * override any of the var settings that we've already parsed
	 * from our modedb. -- PFM.
	 */
	if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_TEST)
		return 0;

	var->left_margin = par->HBP;
	var->hsync_len = par->HST;
	var->right_margin = par->HFP;

	var->upper_margin = par->VBP;
	var->vsync_len = par->VST;
	var->lower_margin = par->VFP;

	if (par->HSP == 1)
		var->sync |= FB_SYNC_HOR_HIGH_ACT;
	if (par->VSP == 1)
		var->sync |= FB_SYNC_VERT_HIGH_ACT;

	return 0;
}

static int kyrofb_set_par(struct fb_info *info)
{
	struct kyrofb_info *par = info->par;
	unsigned long lineclock;
	unsigned long frameclock;

	/* Actual resolution */
	par->XRES = info->var.xres;
	par->YRES = info->var.yres;

	/* pixel depth */
	par->PIXDEPTH = info->var.bits_per_pixel;

	/* Refresh rate */
	/* time for a line in ns */
	lineclock = (info->var.pixclock * (info->var.xres +
				    info->var.right_margin +
				    info->var.hsync_len +
				    info->var.left_margin)) / 1000;

	if (!lineclock)
		return -EINVAL;

	/* time for a frame in ns (precision in 32bpp) */
	frameclock = lineclock * (info->var.yres +
				  info->var.lower_margin +
				  info->var.vsync_len +
				  info->var.upper_margin);

	/* Calculate refresh rate and horrizontal clocks */
	par->VFREQ = (1000000000 + (frameclock / 2)) / frameclock;
	par->HCLK = (1000000000 + (lineclock / 2)) / lineclock;
	par->PIXCLK = ((1000000000 + (info->var.pixclock / 2))
					/ info->var.pixclock) * 10;

	/* calculate horizontal timings */
	par->HFP = info->var.right_margin;
	par->HST = info->var.hsync_len;
	par->HBP = info->var.left_margin;
	par->HTot = par->XRES + par->HBP + par->HST + par->HFP;

	/* calculate vertical timings */
	par->VFP = info->var.lower_margin;
	par->VST = info->var.vsync_len;
	par->VBP = info->var.upper_margin;
	par->VTot = par->YRES + par->VBP + par->VST + par->VFP;

	par->HSP = (info->var.sync & FB_SYNC_HOR_HIGH_ACT) ? 1 : 0;
	par->VSP = (info->var.sync & FB_SYNC_VERT_HIGH_ACT) ? 1 : 0;

	kyro_dev_video_mode_set(info);

	/* length of a line in bytes    */
	info->fix.line_length = get_line_length(par->XRES, par->PIXDEPTH);
	info->fix.visual = FB_VISUAL_TRUECOLOR;

	return 0;
}

static int kyrofb_setcolreg(u_int regno, u_int red, u_int green,
			    u_int blue, u_int transp, struct fb_info *info)
{
	struct kyrofb_info *par = info->par;

	if (regno > 255)
		return 1;	/* Invalid register */

	if (regno < 16) {
		switch (info->var.bits_per_pixel) {
		case 16:
			par->palette[regno] =
			     (red   & 0xf800) |
			    ((green & 0xfc00) >> 5) |
			    ((blue  & 0xf800) >> 11);
			break;
		case 32:
			red >>= 8; green >>= 8; blue >>= 8; transp >>= 8;
			par->palette[regno] =
			    (transp << 24) | (red << 16) | (green << 8) | blue;
			break;
		}
	}

	return 0;
}

#ifndef MODULE
static int __init kyrofb_setup(char *options)
{
	char *this_opt;

	if (!options || !*options)
		return 0;

	while ((this_opt = strsep(&options, ","))) {
		if (!*this_opt)
			continue;
		if (strcmp(this_opt, "nopan") == 0) {
			nopan = 1;
		} else if (strcmp(this_opt, "nowrap") == 0) {
			nowrap = 1;
		} else if (strcmp(this_opt, "nomtrr") == 0) {
			nomtrr = 1;
		} else {
			mode_option = this_opt;
		}
	}

	return 0;
}
#endif

static int kyrofb_ioctl(struct fb_info *info,
			unsigned int cmd, unsigned long arg)
{
	overlay_create ol_create;
	overlay_viewport_set ol_viewport_set;
	void __user *argp = (void __user *)arg;

	switch (cmd) {
	case KYRO_IOCTL_OVERLAY_CREATE:
		if (copy_from_user(&ol_create, argp, sizeof(overlay_create)))
			return -EFAULT;

		if (kyro_dev_overlay_create(ol_create.ulWidth,
					    ol_create.ulHeight, 0) < 0) {
			printk(KERN_ERR "Kyro FB: failed to create overlay surface.\n");

			return -EINVAL;
		}
		break;
	case KYRO_IOCTL_OVERLAY_VIEWPORT_SET:
		if (copy_from_user(&ol_viewport_set, argp,
			       sizeof(overlay_viewport_set)))
			return -EFAULT;

		if (kyro_dev_overlay_viewport_set(ol_viewport_set.xOrgin,
						  ol_viewport_set.yOrgin,
						  ol_viewport_set.xSize,
						  ol_viewport_set.ySize) != 0)
		{
			printk(KERN_ERR "Kyro FB: failed to create overlay viewport.\n");
			return -EINVAL;
		}
		break;
	case KYRO_IOCTL_SET_VIDEO_MODE:
		{
			printk(KERN_ERR "Kyro FB: KYRO_IOCTL_SET_VIDEO_MODE is"
				"obsolete, use the appropriate fb_ioctl()"
				"command instead.\n");
			return -EINVAL;
		}
	case KYRO_IOCTL_UVSTRIDE:
		if (copy_to_user(argp, &deviceInfo.ulOverlayUVStride, sizeof(deviceInfo.ulOverlayUVStride)))
			return -EFAULT;
		break;
	case KYRO_IOCTL_STRIDE:
		if (copy_to_user(argp, &deviceInfo.ulOverlayStride, sizeof(deviceInfo.ulOverlayStride)))
			return -EFAULT;
		break;
	case KYRO_IOCTL_OVERLAY_OFFSET:
		if (copy_to_user(argp, &deviceInfo.ulOverlayOffset, sizeof(deviceInfo.ulOverlayOffset)))
			return -EFAULT;
		break;
	}

	return 0;
}

static const struct pci_device_id kyrofb_pci_tbl[] = {
	{ PCI_VENDOR_ID_ST, PCI_DEVICE_ID_STG4000,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ 0, }
};

MODULE_DEVICE_TABLE(pci, kyrofb_pci_tbl);

static struct pci_driver kyrofb_pci_driver = {
	.name		= "kyrofb",
	.id_table	= kyrofb_pci_tbl,
	.probe		= kyrofb_probe,
	.remove		= kyrofb_remove,
};

static const struct fb_ops kyrofb_ops = {
	.owner		= THIS_MODULE,
	.fb_check_var	= kyrofb_check_var,
	.fb_set_par	= kyrofb_set_par,
	.fb_setcolreg	= kyrofb_setcolreg,
	.fb_ioctl	= kyrofb_ioctl,
	.fb_fillrect	= cfb_fillrect,
	.fb_copyarea	= cfb_copyarea,
	.fb_imageblit	= cfb_imageblit,
};

static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	struct fb_info *info;
	struct kyrofb_info *currentpar;
	unsigned long size;
	int err;

	err = aperture_remove_conflicting_pci_devices(pdev, "kyrofb");
	if (err)
		return err;

	if ((err = pci_enable_device(pdev))) {
		printk(KERN_WARNING "kyrofb: Can't enable pdev: %d\n", err);
		return err;
	}

	info = framebuffer_alloc(sizeof(struct kyrofb_info), &pdev->dev);
	if (!info)
		return -ENOMEM;

	currentpar = info->par;

	kyro_fix.smem_start = pci_resource_start(pdev, 0);
	kyro_fix.smem_len   = pci_resource_len(pdev, 0);
	kyro_fix.mmio_start = pci_resource_start(pdev, 1);
	kyro_fix.mmio_len   = pci_resource_len(pdev, 1);

	currentpar->regbase = deviceInfo.pSTGReg =
		ioremap(kyro_fix.mmio_start, kyro_fix.mmio_len);
	if (!currentpar->regbase)
		goto out_free_fb;

	info->screen_base = pci_ioremap_wc_bar(pdev, 0);
	if (!info->screen_base)
		goto out_unmap_regs;

	if (!nomtrr)
		currentpar->wc_cookie = arch_phys_wc_add(kyro_fix.smem_start,
							 kyro_fix.smem_len);

	kyro_fix.ypanstep	= nopan ? 0 : 1;
	kyro_fix.ywrapstep	= nowrap ? 0 : 1;

	info->fbops		= &kyrofb_ops;
	info->fix		= kyro_fix;
	info->pseudo_palette	= currentpar->palette;
	info->flags		= FBINFO_DEFAULT;

	SetCoreClockPLL(deviceInfo.pSTGReg, pdev);

	deviceInfo.ulNextFreeVidMem = 0;
	deviceInfo.ulOverlayOffset = 0;

	/* This should give a reasonable default video mode */
	if (!fb_find_mode(&info->var, info, mode_option, kyro_modedb,
			  NUM_TOTAL_MODES, &kyro_modedb[VMODE_1024_768_75], 32))
		info->var = kyro_var;

	fb_alloc_cmap(&info->cmap, 256, 0);

	kyrofb_set_par(info);
	kyrofb_check_var(&info->var, info);

	size = get_line_length(info->var.xres_virtual,
			       info->var.bits_per_pixel);
	size *= info->var.yres_virtual;

	fb_memset(info->screen_base, 0, size);

	if (register_framebuffer(info) < 0)
		goto out_unmap;

	fb_info(info, "%s frame buffer device, at %dx%d@%d using %ldk/%ldk of VRAM\n",
		info->fix.id,
		info->var.xres, info->var.yres, info->var.bits_per_pixel,
		size >> 10, (unsigned long)info->fix.smem_len >> 10);

	pci_set_drvdata(pdev, info);

	return 0;

out_unmap:
	iounmap(info->screen_base);
out_unmap_regs:
	iounmap(currentpar->regbase);
out_free_fb:
	framebuffer_release(info);

	return -EINVAL;
}

static void kyrofb_remove(struct pci_dev *pdev)
{
	struct fb_info *info = pci_get_drvdata(pdev);
	struct kyrofb_info *par = info->par;

	/* Reset the board */
	StopVTG(deviceInfo.pSTGReg);
	DisableRamdacOutput(deviceInfo.pSTGReg);

	/* Sync up the PLL */
	SetCoreClockPLL(deviceInfo.pSTGReg, pdev);

	deviceInfo.ulNextFreeVidMem = 0;
	deviceInfo.ulOverlayOffset = 0;

	iounmap(info->screen_base);
	iounmap(par->regbase);

	arch_phys_wc_del(par->wc_cookie);

	unregister_framebuffer(info);
	framebuffer_release(info);
}

static int __init kyrofb_init(void)
{
#ifndef MODULE
	char *option = NULL;

	if (fb_get_options("kyrofb", &option))
		return -ENODEV;
	kyrofb_setup(option);
#endif
	return pci_register_driver(&kyrofb_pci_driver);
}

static void __exit kyrofb_exit(void)
{
	pci_unregister_driver(&kyrofb_pci_driver);
}

module_init(kyrofb_init);

#ifdef MODULE
module_exit(kyrofb_exit);
#endif

MODULE_AUTHOR("STMicroelectronics; Paul Mundt <lethal@linux-sh.org>");
MODULE_LICENSE("GPL");