Merge branch 'upstream-fixes'
[linux-2.6] / drivers / video / kyro / fbdev.c
1 /*
2  *  linux/drivers/video/kyro/fbdev.c
3  *
4  *  Copyright (C) 2002 STMicroelectronics
5  *  Copyright (C) 2003, 2004 Paul Mundt
6  *
7  * This file is subject to the terms and conditions of the GNU General Public
8  * License.  See the file COPYING in the main directory of this archive
9  * for more details.
10  */
11
12 #include <linux/config.h>
13 #include <linux/module.h>
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/sched.h>
17 #include <linux/mm.h>
18 #include <linux/errno.h>
19 #include <linux/string.h>
20 #include <linux/tty.h>
21 #include <linux/delay.h>
22 #include <linux/fb.h>
23 #include <linux/ioctl.h>
24 #include <linux/init.h>
25 #include <linux/pci.h>
26 #include <asm/io.h>
27 #include <asm/uaccess.h>
28 #ifdef CONFIG_MTRR
29 #include <asm/mtrr.h>
30 #endif
31
32 #include <video/kyro.h>
33
34 #include "STG4000Reg.h"
35 #include "STG4000Interface.h"
36
37 /*
38  * PCI Definitions
39  */
40 #define PCI_VENDOR_ID_ST        0x104a
41 #define PCI_DEVICE_ID_STG4000   0x0010
42
43 #define KHZ2PICOS(a) (1000000000UL/(a))
44
45 /****************************************************************************/
46 static struct fb_fix_screeninfo kyro_fix __devinitdata = {
47         .id             = "ST Kyro",
48         .type           = FB_TYPE_PACKED_PIXELS,
49         .visual         = FB_VISUAL_TRUECOLOR,
50         .accel          = FB_ACCEL_NONE,
51 };
52
53 static struct fb_var_screeninfo kyro_var __devinitdata = {
54         /* 640x480, 16bpp @ 60 Hz */
55         .xres           = 640,
56         .yres           = 480,
57         .xres_virtual   = 640,
58         .yres_virtual   = 480,
59         .bits_per_pixel = 16,
60         .red            = { 11, 5, 0 },
61         .green          = {  5, 6, 0 },
62         .blue           = {  0, 5, 0 },
63         .activate       = FB_ACTIVATE_NOW,
64         .height         = -1,
65         .width          = -1,
66         .pixclock       = KHZ2PICOS(25175),
67         .left_margin    = 48,
68         .right_margin   = 16,
69         .upper_margin   = 33,
70         .lower_margin   = 10,
71         .hsync_len      = 96,
72         .vsync_len      = 2,
73         .vmode          = FB_VMODE_NONINTERLACED,
74 };
75
76 static struct kyrofb_info *currentpar;
77
78 typedef struct {
79         STG4000REG __iomem *pSTGReg;    /* Virtual address of PCI register region */
80         u32 ulNextFreeVidMem;   /* Offset from start of vid mem to next free region */
81         u32 ulOverlayOffset;    /* Offset from start of vid mem to overlay */
82         u32 ulOverlayStride;    /* Interleaved YUV and 422 mode Y stride */
83         u32 ulOverlayUVStride;  /* 422 mode U & V stride */
84 } device_info_t;
85
86 /* global graphics card info structure (one per card) */
87 static device_info_t deviceInfo;
88
89 static char *mode_option __devinitdata = NULL;
90 static int nopan __devinitdata = 0;
91 static int nowrap __devinitdata = 1;
92 #ifdef CONFIG_MTRR
93 static int nomtrr __devinitdata = 0;
94 #endif
95
96 /* PCI driver prototypes */
97 static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
98 static void kyrofb_remove(struct pci_dev *pdev);
99
100 static struct fb_videomode kyro_modedb[] __devinitdata = {
101         {
102                 /* 640x350 @ 85Hz */
103                 NULL, 85, 640, 350, KHZ2PICOS(31500),
104                 96, 32, 60, 32, 64, 3,
105                 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED
106         }, {
107                 /* 640x400 @ 85Hz */
108                 NULL, 85, 640, 400, KHZ2PICOS(31500),
109                 96, 32, 41, 1, 64, 3,
110                 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
111         }, {
112                 /* 720x400 @ 85Hz */
113                 NULL, 85, 720, 400, KHZ2PICOS(35500),
114                 108, 36, 42, 1, 72, 3,
115                 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
116         }, {
117                 /* 640x480 @ 60Hz */
118                 NULL, 60, 640, 480, KHZ2PICOS(25175),
119                 48, 16, 33, 10, 96, 2,
120                 0, FB_VMODE_NONINTERLACED
121         }, {
122                 /* 640x480 @ 72Hz */
123                 NULL, 72, 640, 480, KHZ2PICOS(31500),
124                 128, 24, 28, 9, 40, 3,
125                 0, FB_VMODE_NONINTERLACED
126         }, {
127                 /* 640x480 @ 75Hz */
128                 NULL, 75, 640, 480, KHZ2PICOS(31500),
129                 120, 16, 16, 1, 64, 3,
130                 0, FB_VMODE_NONINTERLACED
131         }, {
132                 /* 640x480 @ 85Hz */
133                 NULL, 85, 640, 480, KHZ2PICOS(36000),
134                 80, 56, 25, 1, 56, 3,
135                 0, FB_VMODE_NONINTERLACED
136         }, {
137                 /* 800x600 @ 56Hz */
138                 NULL, 56, 800, 600, KHZ2PICOS(36000),
139                 128, 24, 22, 1, 72, 2,
140                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
141         }, {
142                 /* 800x600 @ 60Hz */
143                 NULL, 60, 800, 600, KHZ2PICOS(40000),
144                 88, 40, 23, 1, 128, 4,
145                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
146         }, {
147                 /* 800x600 @ 72Hz */
148                 NULL, 72, 800, 600, KHZ2PICOS(50000),
149                 64, 56, 23, 37, 120, 6,
150                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
151         }, {
152                 /* 800x600 @ 75Hz */
153                 NULL, 75, 800, 600, KHZ2PICOS(49500),
154                 160, 16, 21, 1, 80, 3,
155                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
156         }, {
157                 /* 800x600 @ 85Hz */
158                 NULL, 85, 800, 600, KHZ2PICOS(56250),
159                 152, 32, 27, 1, 64, 3,
160                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
161         }, {
162                 /* 1024x768 @ 60Hz */
163                 NULL, 60, 1024, 768, KHZ2PICOS(65000),
164                 160, 24, 29, 3, 136, 6,
165                 0, FB_VMODE_NONINTERLACED
166         }, {
167                 /* 1024x768 @ 70Hz */
168                 NULL, 70, 1024, 768, KHZ2PICOS(75000),
169                 144, 24, 29, 3, 136, 6,
170                 0, FB_VMODE_NONINTERLACED
171         }, {
172                 /* 1024x768 @ 75Hz */
173                 NULL, 75, 1024, 768, KHZ2PICOS(78750),
174                 176, 16, 28, 1, 96, 3,
175                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
176         }, {
177                 /* 1024x768 @ 85Hz */
178                 NULL, 85, 1024, 768, KHZ2PICOS(94500),
179                 208, 48, 36, 1, 96, 3,
180                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
181         }, {
182                 /* 1152x864 @ 75Hz */
183                 NULL, 75, 1152, 864, KHZ2PICOS(108000),
184                 256, 64, 32, 1, 128, 3,
185                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
186         }, {
187                 /* 1280x960 @ 60Hz */
188                 NULL, 60, 1280, 960, KHZ2PICOS(108000),
189                 312, 96, 36, 1, 112, 3,
190                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
191         }, {
192                 /* 1280x960 @ 85Hz */
193                 NULL, 85, 1280, 960, KHZ2PICOS(148500),
194                 224, 64, 47, 1, 160, 3,
195                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
196         }, {
197                 /* 1280x1024 @ 60Hz */
198                 NULL, 60, 1280, 1024, KHZ2PICOS(108000),
199                 248, 48, 38, 1, 112, 3,
200                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
201         }, {
202                 /* 1280x1024 @ 75Hz */
203                 NULL, 75, 1280, 1024, KHZ2PICOS(135000),
204                 248, 16, 38, 1, 144, 3,
205                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
206         }, {
207                 /* 1280x1024 @ 85Hz */
208                 NULL, 85, 1280, 1024, KHZ2PICOS(157500),
209                 224, 64, 44, 1, 160, 3,
210                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
211         }, {
212                 /* 1600x1200 @ 60Hz */
213                 NULL, 60, 1600, 1200, KHZ2PICOS(162000),
214                 304, 64, 46, 1, 192, 3,
215                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
216         }, {
217                 /* 1600x1200 @ 65Hz */
218                 NULL, 65, 1600, 1200, KHZ2PICOS(175500),
219                 304, 64, 46, 1, 192, 3,
220                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
221         }, {
222                 /* 1600x1200 @ 70Hz */
223                 NULL, 70, 1600, 1200, KHZ2PICOS(189000),
224                 304, 64, 46, 1, 192, 3,
225                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
226         }, {
227                 /* 1600x1200 @ 75Hz */
228                 NULL, 75, 1600, 1200, KHZ2PICOS(202500),
229                 304, 64, 46, 1, 192, 3,
230                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
231         }, {
232                 /* 1600x1200 @ 85Hz */
233                 NULL, 85, 1600, 1200, KHZ2PICOS(229500),
234                 304, 64, 46, 1, 192, 3,
235                 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
236         }, {
237                 /* 1792x1344 @ 60Hz */
238                 NULL, 60, 1792, 1344, KHZ2PICOS(204750),
239                 328, 128, 46, 1, 200, 3,
240                 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
241         }, {
242                 /* 1792x1344 @ 75Hz */
243                 NULL, 75, 1792, 1344, KHZ2PICOS(261000),
244                 352, 96, 69, 1, 216, 3,
245                 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
246         }, {
247                 /* 1856x1392 @ 60Hz */
248                 NULL, 60, 1856, 1392, KHZ2PICOS(218250),
249                 352, 96, 43, 1, 224, 3,
250                 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
251         }, {
252                 /* 1856x1392 @ 75Hz */
253                 NULL, 75, 1856, 1392, KHZ2PICOS(288000),
254                 352, 128, 104, 1, 224, 3,
255                 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
256         }, {
257                 /* 1920x1440 @ 60Hz */
258                 NULL, 60, 1920, 1440, KHZ2PICOS(234000),
259                 344, 128, 56, 1, 208, 3,
260                 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
261         }, {
262                 /* 1920x1440 @ 75Hz */
263                 NULL, 75, 1920, 1440, KHZ2PICOS(297000),
264                 352, 144, 56, 1, 224, 3,
265                 FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
266         },
267 };
268 #define NUM_TOTAL_MODES ARRAY_SIZE(kyro_modedb)
269
270 /*
271  * This needs to be kept ordered corresponding to kyro_modedb.
272  */
273 enum {
274         VMODE_640_350_85,
275         VMODE_640_400_85,
276         VMODE_720_400_85,
277         VMODE_640_480_60,
278         VMODE_640_480_72,
279         VMODE_640_480_75,
280         VMODE_640_480_85,
281         VMODE_800_600_56,
282         VMODE_800_600_60,
283         VMODE_800_600_72,
284         VMODE_800_600_75,
285         VMODE_800_600_85,
286         VMODE_1024_768_60,
287         VMODE_1024_768_70,
288         VMODE_1024_768_75,
289         VMODE_1024_768_85,
290         VMODE_1152_864_75,
291         VMODE_1280_960_60,
292         VMODE_1280_960_85,
293         VMODE_1280_1024_60,
294         VMODE_1280_1024_75,
295         VMODE_1280_1024_85,
296         VMODE_1600_1200_60,
297         VMODE_1600_1200_65,
298         VMODE_1600_1200_70,
299         VMODE_1600_1200_75,
300         VMODE_1600_1200_85,
301         VMODE_1792_1344_60,
302         VMODE_1792_1344_75,
303         VMODE_1856_1392_60,
304         VMODE_1856_1392_75,
305         VMODE_1920_1440_60,
306         VMODE_1920_1440_75,
307 };
308
309 /* Accessors */
310 static int kyro_dev_video_mode_set(struct fb_info *info)
311 {
312         struct kyrofb_info *par = (struct kyrofb_info *)info->par;
313
314         /* Turn off display */
315         StopVTG(deviceInfo.pSTGReg);
316         DisableRamdacOutput(deviceInfo.pSTGReg);
317
318         /* Bring us out of VGA and into Hi-Res mode, if not already. */
319         DisableVGA(deviceInfo.pSTGReg);
320
321         if (InitialiseRamdac(deviceInfo.pSTGReg,
322                              info->var.bits_per_pixel,
323                              info->var.xres, info->var.yres,
324                              par->HSP, par->VSP, &par->PIXCLK) < 0)
325                 return -EINVAL;
326
327         SetupVTG(deviceInfo.pSTGReg, par);
328
329         ResetOverlayRegisters(deviceInfo.pSTGReg);
330
331         /* Turn on display in new mode */
332         EnableRamdacOutput(deviceInfo.pSTGReg);
333         StartVTG(deviceInfo.pSTGReg);
334
335         deviceInfo.ulNextFreeVidMem = info->var.xres * info->var.yres *
336                                       info->var.bits_per_pixel;
337         deviceInfo.ulOverlayOffset = 0;
338
339         return 0;
340 }
341
342 static int kyro_dev_overlay_create(u32 ulWidth,
343                                    u32 ulHeight, int bLinear)
344 {
345         u32 offset;
346         u32 stride, uvStride;
347
348         if (deviceInfo.ulOverlayOffset != 0)
349                 /*
350                  * Can only create one overlay without resetting the card or
351                  * changing display mode
352                  */
353                 return -EINVAL;
354
355         ResetOverlayRegisters(deviceInfo.pSTGReg);
356
357         /* Overlays are addressed in multiples of 16bytes or 32bytes, so make
358          * sure the start offset is on an appropriate boundary.
359          */
360         offset = deviceInfo.ulNextFreeVidMem;
361         if ((offset & 0x1f) != 0) {
362                 offset = (offset + 32L) & 0xffffffE0L;
363         }
364
365         if (CreateOverlaySurface(deviceInfo.pSTGReg, ulWidth, ulHeight,
366                                  bLinear, offset, &stride, &uvStride) < 0)
367                 return -EINVAL;
368
369         deviceInfo.ulOverlayOffset = offset;
370         deviceInfo.ulOverlayStride = stride;
371         deviceInfo.ulOverlayUVStride = uvStride;
372         deviceInfo.ulNextFreeVidMem = offset + (ulHeight * stride) + (ulHeight * 2 * uvStride);
373
374         SetOverlayBlendMode(deviceInfo.pSTGReg, GLOBAL_ALPHA, 0xf, 0x0);
375
376         return 0;
377 }
378
379 static int kyro_dev_overlay_viewport_set(u32 x, u32 y, u32 ulWidth, u32 ulHeight)
380 {
381         if (deviceInfo.ulOverlayOffset == 0)
382                 /* probably haven't called CreateOverlay yet */
383                 return -EINVAL;
384
385         /* Stop Ramdac Output */
386         DisableRamdacOutput(deviceInfo.pSTGReg);
387
388         SetOverlayViewPort(deviceInfo.pSTGReg,
389                            x, y, x + ulWidth - 1, y + ulHeight - 1);
390
391         EnableOverlayPlane(deviceInfo.pSTGReg);
392         /* Start Ramdac Output */
393         EnableRamdacOutput(deviceInfo.pSTGReg);
394
395         return 0;
396 }
397
398 static inline unsigned long get_line_length(int x, int bpp)
399 {
400         return (unsigned long)((((x*bpp)+31)&~31) >> 3);
401 }
402
403 static int kyrofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
404 {
405         struct kyrofb_info *par = (struct kyrofb_info *)info->par;
406
407         if (var->bits_per_pixel != 16 && var->bits_per_pixel != 32) {
408                 printk(KERN_WARNING "kyrofb: depth not supported: %u\n", var->bits_per_pixel);
409                 return -EINVAL;
410         }
411
412         switch (var->bits_per_pixel) {
413         case 16:
414                 var->red.offset = 11;
415                 var->red.length = 5;
416                 var->green.offset = 5;
417                 var->green.length = 6;
418                 var->blue.length = 5;
419                 break;
420         case 32:
421                 var->transp.offset = 24;
422                 var->red.offset = 16;
423                 var->green.offset = 8;
424                 var->blue.offset = 0;
425
426                 var->red.length = 8;
427                 var->green.length = 8;
428                 var->blue.length = 8;
429                 var->transp.length = 8;
430                 break;
431         }
432
433         /* Height/Width of picture in mm */
434         var->height = var->width = -1;
435
436         /* Timing information. All values are in picoseconds */
437
438         /* par->PIXCLK is in 100Hz units. Convert to picoseconds -
439          * ensuring we do not exceed 32 bit precision
440          */
441         /*
442          * XXX: Enabling this really screws over the pixclock value when we
443          * read it back with fbset. As such, leaving this commented out appears
444          * to do the right thing (at least for now) .. bearing in mind that we
445          * have infact already done the KHZ2PICOS conversion in both the modedb
446          * and kyro_var. -- PFM.
447          */
448 //      var->pixclock = 1000000000 / (par->PIXCLK / 10);
449
450         /* the header file claims we should use picoseconds
451          * - nobody else does though, the all use pixels and lines
452          * of h and v sizes. Both options here.
453          */
454
455         /*
456          * If we're being called by __fb_try_mode(), then we don't want to
457          * override any of the var settings that we've already parsed
458          * from our modedb. -- PFM.
459          */
460         if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_TEST)
461                 return 0;
462
463         var->left_margin = par->HBP;
464         var->hsync_len = par->HST;
465         var->right_margin = par->HFP;
466
467         var->upper_margin = par->VBP;
468         var->vsync_len = par->VST;
469         var->lower_margin = par->VFP;
470
471         if (par->HSP == 1)
472                 var->sync |= FB_SYNC_HOR_HIGH_ACT;
473         if (par->VSP == 1)
474                 var->sync |= FB_SYNC_VERT_HIGH_ACT;
475
476         return 0;
477 }
478
479 static int kyrofb_set_par(struct fb_info *info)
480 {
481         struct kyrofb_info *par = (struct kyrofb_info *)info->par;
482         unsigned long lineclock;
483         unsigned long frameclock;
484
485         /* Actual resolution */
486         par->XRES = info->var.xres;
487         par->YRES = info->var.yres;
488
489         /* pixel depth */
490         par->PIXDEPTH = info->var.bits_per_pixel;
491
492         /* Refresh rate */
493         /* time for a line in ns */
494         lineclock = (info->var.pixclock * (info->var.xres +
495                                     info->var.right_margin +
496                                     info->var.hsync_len +
497                                     info->var.left_margin)) / 1000;
498
499
500         /* time for a frame in ns (precision in 32bpp) */
501         frameclock = lineclock * (info->var.yres +
502                                   info->var.lower_margin +
503                                   info->var.vsync_len +
504                                   info->var.upper_margin);
505
506         /* Calculate refresh rate and horrizontal clocks */
507         par->VFREQ = (1000000000 + (frameclock / 2)) / frameclock;
508         par->HCLK = (1000000000 + (lineclock / 2)) / lineclock;
509         par->PIXCLK = ((1000000000 + (info->var.pixclock / 2))
510                                         / info->var.pixclock) * 10;
511
512         /* calculate horizontal timings */
513         par->HFP = info->var.right_margin;
514         par->HST = info->var.hsync_len;
515         par->HBP = info->var.left_margin;
516         par->HTot = par->XRES + par->HBP + par->HST + par->HFP;
517
518         /* calculate vertical timings */
519         par->VFP = info->var.lower_margin;
520         par->VST = info->var.vsync_len;
521         par->VBP = info->var.upper_margin;
522         par->VTot = par->YRES + par->VBP + par->VST + par->VFP;
523
524         par->HSP = (info->var.sync & FB_SYNC_HOR_HIGH_ACT) ? 1 : 0;
525         par->VSP = (info->var.sync & FB_SYNC_VERT_HIGH_ACT) ? 1 : 0;
526
527         kyro_dev_video_mode_set(info);
528
529         /* length of a line in bytes    */
530         info->fix.line_length = get_line_length(par->XRES, par->PIXDEPTH);
531         info->fix.visual = FB_VISUAL_TRUECOLOR;
532
533         return 0;
534 }
535
536 static int kyrofb_setcolreg(u_int regno, u_int red, u_int green,
537                             u_int blue, u_int transp, struct fb_info *info)
538 {
539         if (regno > 255)
540                 return 1;       /* Invalid register */
541
542         if (regno < 16) {
543                 switch (info->var.bits_per_pixel) {
544                 case 16:
545                         ((u16*)(info->pseudo_palette))[regno] =
546                              (red   & 0xf800) |
547                             ((green & 0xfc00) >> 5) |
548                             ((blue  & 0xf800) >> 11);
549                         break;
550                 case 32:
551                         red >>= 8; green >>= 8; blue >>= 8; transp >>= 8;
552                         ((u32*)(info->pseudo_palette))[regno] =
553                             (transp << 24) | (red << 16) | (green << 8) | blue;
554                         break;
555                 }
556         }
557
558         return 0;
559 }
560
561 #ifndef MODULE
562 static int __init kyrofb_setup(char *options)
563 {
564         char *this_opt;
565
566         if (!options || !*options)
567                 return 0;
568
569         while ((this_opt = strsep(&options, ","))) {
570                 if (!*this_opt)
571                         continue;
572                 if (strcmp(this_opt, "nopan") == 0) {
573                         nopan = 1;
574                 } else if (strcmp(this_opt, "nowrap") == 0) {
575                         nowrap = 1;
576 #ifdef CONFIG_MTRR
577                 } else if (strcmp(this_opt, "nomtrr") == 0) {
578                         nomtrr = 1;
579 #endif
580                 } else {
581                         mode_option = this_opt;
582                 }
583         }
584
585         return 0;
586 }
587 #endif
588
589 static int kyrofb_ioctl(struct inode *inode, struct file *file,
590                         unsigned int cmd, unsigned long arg,
591                         struct fb_info *info)
592 {
593         overlay_create ol_create;
594         overlay_viewport_set ol_viewport_set;
595         void __user *argp = (void __user *)arg;
596
597         switch (cmd) {
598         case KYRO_IOCTL_OVERLAY_CREATE:
599                 if (copy_from_user(&ol_create, argp, sizeof(overlay_create)))
600                         return -EFAULT;
601
602                 if (kyro_dev_overlay_create(ol_create.ulWidth,
603                                             ol_create.ulHeight, 0) < 0) {
604                         printk(KERN_ERR "Kyro FB: failed to create overlay surface.\n");
605
606                         return -EINVAL;
607                 }
608                 break;
609         case KYRO_IOCTL_OVERLAY_VIEWPORT_SET:
610                 if (copy_from_user(&ol_viewport_set, argp,
611                                sizeof(overlay_viewport_set)))
612                         return -EFAULT;
613
614                 if (kyro_dev_overlay_viewport_set(ol_viewport_set.xOrgin,
615                                                   ol_viewport_set.yOrgin,
616                                                   ol_viewport_set.xSize,
617                                                   ol_viewport_set.ySize) != 0)
618                 {
619                         printk(KERN_ERR "Kyro FB: failed to create overlay viewport.\n");
620                         return -EINVAL;
621                 }
622                 break;
623         case KYRO_IOCTL_SET_VIDEO_MODE:
624                 {
625                         printk(KERN_ERR "Kyro FB: KYRO_IOCTL_SET_VIDEO_MODE is"
626                                 "obsolete, use the appropriate fb_ioctl()"
627                                 "command instead.\n");
628                         return -EINVAL;
629                 }
630                 break;
631         case KYRO_IOCTL_UVSTRIDE:
632                 if (copy_to_user(argp, &deviceInfo.ulOverlayUVStride, sizeof(unsigned long)))
633                         return -EFAULT;
634                 break;
635         case KYRO_IOCTL_STRIDE:
636                 if (copy_to_user(argp, &deviceInfo.ulOverlayStride, sizeof(unsigned long)))
637                         return -EFAULT;
638                 break;
639         case KYRO_IOCTL_OVERLAY_OFFSET:
640                 if (copy_to_user(argp, &deviceInfo.ulOverlayOffset, sizeof(unsigned long)))
641                         return -EFAULT;
642                 break;
643         }
644
645         return 0;
646 }
647
648 static struct pci_device_id kyrofb_pci_tbl[] = {
649         { PCI_VENDOR_ID_ST, PCI_DEVICE_ID_STG4000,
650           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
651         { 0, }
652 };
653
654 MODULE_DEVICE_TABLE(pci, kyrofb_pci_tbl);
655
656 static struct pci_driver kyrofb_pci_driver = {
657         .name           = "kyrofb",
658         .id_table       = kyrofb_pci_tbl,
659         .probe          = kyrofb_probe,
660         .remove         = __devexit_p(kyrofb_remove),
661 };
662
663 static struct fb_ops kyrofb_ops = {
664         .owner          = THIS_MODULE,
665         .fb_check_var   = kyrofb_check_var,
666         .fb_set_par     = kyrofb_set_par,
667         .fb_setcolreg   = kyrofb_setcolreg,
668         .fb_ioctl       = kyrofb_ioctl,
669         .fb_fillrect    = cfb_fillrect,
670         .fb_copyarea    = cfb_copyarea,
671         .fb_imageblit   = cfb_imageblit,
672 };
673
674 static int __devinit kyrofb_probe(struct pci_dev *pdev,
675                                   const struct pci_device_id *ent)
676 {
677         struct fb_info *info;
678         unsigned long size;
679         int err;
680
681         if ((err = pci_enable_device(pdev))) {
682                 printk(KERN_WARNING "kyrofb: Can't enable pdev: %d\n", err);
683                 return err;
684         }
685
686         size = sizeof(struct fb_info) + sizeof(struct kyrofb_info) + 16 * sizeof(u32);
687         info = kmalloc(size, GFP_KERNEL);
688         if (!info)
689                 return -ENOMEM;
690
691         memset(info, 0, size);
692
693         currentpar = (struct kyrofb_info *)(info + 1);
694
695         kyro_fix.smem_start = pci_resource_start(pdev, 0);
696         kyro_fix.smem_len   = pci_resource_len(pdev, 0);
697         kyro_fix.mmio_start = pci_resource_start(pdev, 1);
698         kyro_fix.mmio_len   = pci_resource_len(pdev, 1);
699
700         currentpar->regbase = deviceInfo.pSTGReg =
701                 ioremap_nocache(kyro_fix.mmio_start, kyro_fix.mmio_len);
702
703         info->screen_base = ioremap_nocache(kyro_fix.smem_start,
704                                             kyro_fix.smem_len);
705
706 #ifdef CONFIG_MTRR
707         if (!nomtrr)
708                 currentpar->mtrr_handle =
709                         mtrr_add(kyro_fix.smem_start,
710                                  kyro_fix.smem_len,
711                                  MTRR_TYPE_WRCOMB, 1);
712 #endif
713
714         kyro_fix.ypanstep       = nopan ? 0 : 1;
715         kyro_fix.ywrapstep      = nowrap ? 0 : 1;
716
717         info->fbops             = &kyrofb_ops;
718         info->fix               = kyro_fix;
719         info->par               = currentpar;
720         info->pseudo_palette    = (void *)(currentpar + 1);
721         info->flags             = FBINFO_DEFAULT;
722
723         SetCoreClockPLL(deviceInfo.pSTGReg, pdev);
724
725         deviceInfo.ulNextFreeVidMem = 0;
726         deviceInfo.ulOverlayOffset = 0;
727
728         /* This should give a reasonable default video mode */
729         if (!fb_find_mode(&info->var, info, mode_option, kyro_modedb,
730                           NUM_TOTAL_MODES, &kyro_modedb[VMODE_1024_768_75], 32))
731                 info->var = kyro_var;
732
733         fb_alloc_cmap(&info->cmap, 256, 0);
734
735         kyrofb_set_par(info);
736         kyrofb_check_var(&info->var, info);
737
738         size = get_line_length(info->var.xres_virtual,
739                                info->var.bits_per_pixel);
740         size *= info->var.yres_virtual;
741
742         fb_memset(info->screen_base, 0, size);
743
744         info->device = &pdev->dev;
745         if (register_framebuffer(info) < 0)
746                 goto out_unmap;
747
748         printk("fb%d: %s frame buffer device, at %dx%d@%d using %ldk/%ldk of VRAM\n",
749                info->node, info->fix.id, info->var.xres,
750                info->var.yres, info->var.bits_per_pixel, size >> 10,
751                (unsigned long)info->fix.smem_len >> 10);
752
753         pci_set_drvdata(pdev, info);
754
755         return 0;
756
757 out_unmap:
758         iounmap(currentpar->regbase);
759         iounmap(info->screen_base);
760         kfree(info);
761
762         return -EINVAL;
763 }
764
765 static void __devexit kyrofb_remove(struct pci_dev *pdev)
766 {
767         struct fb_info *info = pci_get_drvdata(pdev);
768         struct kyrofb_info *par = (struct kyrofb_info *)info->par;
769
770         /* Reset the board */
771         StopVTG(deviceInfo.pSTGReg);
772         DisableRamdacOutput(deviceInfo.pSTGReg);
773
774         /* Sync up the PLL */
775         SetCoreClockPLL(deviceInfo.pSTGReg, pdev);
776
777         deviceInfo.ulNextFreeVidMem = 0;
778         deviceInfo.ulOverlayOffset = 0;
779
780         iounmap(info->screen_base);
781         iounmap(par->regbase);
782
783 #ifdef CONFIG_MTRR
784         if (par->mtrr_handle)
785                 mtrr_del(par->mtrr_handle,
786                          info->fix.smem_start,
787                          info->fix.smem_len);
788 #endif
789
790         unregister_framebuffer(info);
791         pci_set_drvdata(pdev, NULL);
792         kfree(info);
793 }
794
795 static int __init kyrofb_init(void)
796 {
797 #ifndef MODULE
798         char *option = NULL;
799
800         if (fb_get_options("kyrofb", &option))
801                 return -ENODEV;
802         kyrofb_setup(option);
803 #endif
804         return pci_register_driver(&kyrofb_pci_driver);
805 }
806
807 static void __exit kyrofb_exit(void)
808 {
809         pci_unregister_driver(&kyrofb_pci_driver);
810 }
811
812 module_init(kyrofb_init);
813
814 #ifdef MODULE
815 module_exit(kyrofb_exit);
816 #endif
817
818 MODULE_AUTHOR("STMicroelectronics; Paul Mundt <lethal@linux-sh.org>");
819 MODULE_LICENSE("GPL");