[PATCH] fbdev: Add fbset -a support
[linux-2.6] / drivers / video / cyber2000fb.c
1 /*
2  *  linux/drivers/video/cyber2000fb.c
3  *
4  *  Copyright (C) 1998-2002 Russell King
5  *
6  *  MIPS and 50xx clock support
7  *  Copyright (C) 2001 Bradley D. LaRonde <brad@ltc.com>
8  *
9  *  32 bit support, text color and panning fixes for modes != 8 bit
10  *  Copyright (C) 2002 Denis Oliver Kropp <dok@directfb.org>
11  *
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of the GNU General Public License version 2 as
14  * published by the Free Software Foundation.
15  *
16  * Integraphics CyberPro 2000, 2010 and 5000 frame buffer device
17  *
18  * Based on cyberfb.c.
19  *
20  * Note that we now use the new fbcon fix, var and cmap scheme.  We do
21  * still have to check which console is the currently displayed one
22  * however, especially for the colourmap stuff.
23  *
24  * We also use the new hotplug PCI subsystem.  I'm not sure if there
25  * are any such cards, but I'm erring on the side of caution.  We don't
26  * want to go pop just because someone does have one.
27  *
28  * Note that this doesn't work fully in the case of multiple CyberPro
29  * cards with grabbers.  We currently can only attach to the first
30  * CyberPro card found.
31  *
32  * When we're in truecolour mode, we power down the LUT RAM as a power
33  * saving feature.  Also, when we enter any of the powersaving modes
34  * (except soft blanking) we power down the RAMDACs.  This saves about
35  * 1W, which is roughly 8% of the power consumption of a NetWinder
36  * (which, incidentally, is about the same saving as a 2.5in hard disk
37  * entering standby mode.)
38  */
39 #include <linux/config.h>
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/errno.h>
43 #include <linux/string.h>
44 #include <linux/mm.h>
45 #include <linux/tty.h>
46 #include <linux/slab.h>
47 #include <linux/delay.h>
48 #include <linux/fb.h>
49 #include <linux/pci.h>
50 #include <linux/init.h>
51
52 #include <asm/io.h>
53 #include <asm/irq.h>
54 #include <asm/pgtable.h>
55 #include <asm/system.h>
56 #include <asm/uaccess.h>
57
58 #ifdef __arm__
59 #include <asm/mach-types.h>
60 #endif
61
62 #include "cyber2000fb.h"
63
64 struct cfb_info {
65         struct fb_info          fb;
66         struct display_switch   *dispsw;
67         struct display          *display;
68         struct pci_dev          *dev;
69         unsigned char           __iomem *region;
70         unsigned char           __iomem *regs;
71         u_int                   id;
72         int                     func_use_count;
73         u_long                  ref_ps;
74
75         /*
76          * Clock divisors
77          */
78         u_int                   divisors[4];
79
80         struct {
81                 u8 red, green, blue;
82         } palette[NR_PALETTE];
83
84         u_char                  mem_ctl1;
85         u_char                  mem_ctl2;
86         u_char                  mclk_mult;
87         u_char                  mclk_div;
88         /*
89          * RAMDAC control register is both of these or'ed together
90          */
91         u_char                  ramdac_ctrl;
92         u_char                  ramdac_powerdown;
93
94         u32                     pseudo_palette[16];
95 };
96
97 static char *default_font = "Acorn8x8";
98 module_param(default_font, charp, 0);
99 MODULE_PARM_DESC(default_font, "Default font name");
100
101 /*
102  * Our access methods.
103  */
104 #define cyber2000fb_writel(val,reg,cfb) writel(val, (cfb)->regs + (reg))
105 #define cyber2000fb_writew(val,reg,cfb) writew(val, (cfb)->regs + (reg))
106 #define cyber2000fb_writeb(val,reg,cfb) writeb(val, (cfb)->regs + (reg))
107
108 #define cyber2000fb_readb(reg,cfb)      readb((cfb)->regs + (reg))
109
110 static inline void
111 cyber2000_crtcw(unsigned int reg, unsigned int val, struct cfb_info *cfb)
112 {
113         cyber2000fb_writew((reg & 255) | val << 8, 0x3d4, cfb);
114 }
115
116 static inline void
117 cyber2000_grphw(unsigned int reg, unsigned int val, struct cfb_info *cfb)
118 {
119         cyber2000fb_writew((reg & 255) | val << 8, 0x3ce, cfb);
120 }
121
122 static inline unsigned int
123 cyber2000_grphr(unsigned int reg, struct cfb_info *cfb)
124 {
125         cyber2000fb_writeb(reg, 0x3ce, cfb);
126         return cyber2000fb_readb(0x3cf, cfb);
127 }
128
129 static inline void
130 cyber2000_attrw(unsigned int reg, unsigned int val, struct cfb_info *cfb)
131 {
132         cyber2000fb_readb(0x3da, cfb);
133         cyber2000fb_writeb(reg, 0x3c0, cfb);
134         cyber2000fb_readb(0x3c1, cfb);
135         cyber2000fb_writeb(val, 0x3c0, cfb);
136 }
137
138 static inline void
139 cyber2000_seqw(unsigned int reg, unsigned int val, struct cfb_info *cfb)
140 {
141         cyber2000fb_writew((reg & 255) | val << 8, 0x3c4, cfb);
142 }
143
144 /* -------------------- Hardware specific routines ------------------------- */
145
146 /*
147  * Hardware Cyber2000 Acceleration
148  */
149 static void
150 cyber2000fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
151 {
152         struct cfb_info *cfb = (struct cfb_info *)info;
153         unsigned long dst, col;
154
155         if (!(cfb->fb.var.accel_flags & FB_ACCELF_TEXT)) {
156                 cfb_fillrect(info, rect);
157                 return;
158         }
159
160         cyber2000fb_writeb(0, CO_REG_CONTROL, cfb);
161         cyber2000fb_writew(rect->width - 1, CO_REG_PIXWIDTH, cfb);
162         cyber2000fb_writew(rect->height - 1, CO_REG_PIXHEIGHT, cfb);
163
164         col = rect->color;
165         if (cfb->fb.var.bits_per_pixel > 8)
166                 col = ((u32 *)cfb->fb.pseudo_palette)[col];
167         cyber2000fb_writel(col, CO_REG_FGCOLOUR, cfb);
168
169         dst = rect->dx + rect->dy * cfb->fb.var.xres_virtual;
170         if (cfb->fb.var.bits_per_pixel == 24) {
171                 cyber2000fb_writeb(dst, CO_REG_X_PHASE, cfb);
172                 dst *= 3;
173         }
174
175         cyber2000fb_writel(dst, CO_REG_DEST_PTR, cfb);
176         cyber2000fb_writeb(CO_FG_MIX_SRC, CO_REG_FGMIX, cfb);
177         cyber2000fb_writew(CO_CMD_L_PATTERN_FGCOL, CO_REG_CMD_L, cfb);
178         cyber2000fb_writew(CO_CMD_H_BLITTER, CO_REG_CMD_H, cfb);
179 }
180
181 static void
182 cyber2000fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
183 {
184         struct cfb_info *cfb = (struct cfb_info *)info;
185         unsigned int cmd = CO_CMD_L_PATTERN_FGCOL;
186         unsigned long src, dst;
187
188         if (!(cfb->fb.var.accel_flags & FB_ACCELF_TEXT)) {
189                 cfb_copyarea(info, region);
190                 return;
191         }
192
193         cyber2000fb_writeb(0, CO_REG_CONTROL, cfb);
194         cyber2000fb_writew(region->width - 1, CO_REG_PIXWIDTH, cfb);
195         cyber2000fb_writew(region->height - 1, CO_REG_PIXHEIGHT, cfb);
196
197         src = region->sx + region->sy * cfb->fb.var.xres_virtual;
198         dst = region->dx + region->dy * cfb->fb.var.xres_virtual;
199
200         if (region->sx < region->dx) {
201                 src += region->width - 1;
202                 dst += region->width - 1;
203                 cmd |= CO_CMD_L_INC_LEFT;
204         }
205
206         if (region->sy < region->dy) {
207                 src += (region->height - 1) * cfb->fb.var.xres_virtual;
208                 dst += (region->height - 1) * cfb->fb.var.xres_virtual;
209                 cmd |= CO_CMD_L_INC_UP;
210         }
211
212         if (cfb->fb.var.bits_per_pixel == 24) {
213                 cyber2000fb_writeb(dst, CO_REG_X_PHASE, cfb);
214                 src *= 3;
215                 dst *= 3;
216         }
217         cyber2000fb_writel(src, CO_REG_SRC1_PTR, cfb);
218         cyber2000fb_writel(dst, CO_REG_DEST_PTR, cfb);
219         cyber2000fb_writew(CO_FG_MIX_SRC, CO_REG_FGMIX, cfb);
220         cyber2000fb_writew(cmd, CO_REG_CMD_L, cfb);
221         cyber2000fb_writew(CO_CMD_H_FGSRCMAP | CO_CMD_H_BLITTER,
222                            CO_REG_CMD_H, cfb);
223 }
224
225 static void
226 cyber2000fb_imageblit(struct fb_info *info, const struct fb_image *image)
227 {
228 //      struct cfb_info *cfb = (struct cfb_info *)info;
229
230 //      if (!(cfb->fb.var.accel_flags & FB_ACCELF_TEXT)) {
231                 cfb_imageblit(info, image);
232                 return;
233 //      }
234 }
235
236 static int cyber2000fb_sync(struct fb_info *info)
237 {
238         struct cfb_info *cfb = (struct cfb_info *)info;
239         int count = 100000;
240
241         if (!(cfb->fb.var.accel_flags & FB_ACCELF_TEXT))
242                 return 0;
243
244         while (cyber2000fb_readb(CO_REG_CONTROL, cfb) & CO_CTRL_BUSY) {
245                 if (!count--) {
246                         debug_printf("accel_wait timed out\n");
247                         cyber2000fb_writeb(0, CO_REG_CONTROL, cfb);
248                         break;
249                 }
250                 udelay(1);
251         }
252         return 0;
253 }
254
255 /*
256  * ===========================================================================
257  */
258
259 static inline u32 convert_bitfield(u_int val, struct fb_bitfield *bf)
260 {
261         u_int mask = (1 << bf->length) - 1;
262
263         return (val >> (16 - bf->length) & mask) << bf->offset;
264 }
265
266 /*
267  *    Set a single color register. Return != 0 for invalid regno.
268  */
269 static int
270 cyber2000fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
271                       u_int transp, struct fb_info *info)
272 {
273         struct cfb_info *cfb = (struct cfb_info *)info;
274         struct fb_var_screeninfo *var = &cfb->fb.var;
275         u32 pseudo_val;
276         int ret = 1;
277
278         switch (cfb->fb.fix.visual) {
279         default:
280                 return 1;
281
282         /*
283          * Pseudocolour:
284          *         8     8
285          * pixel --/--+--/-->  red lut  --> red dac
286          *            |  8
287          *            +--/--> green lut --> green dac
288          *            |  8
289          *            +--/-->  blue lut --> blue dac
290          */
291         case FB_VISUAL_PSEUDOCOLOR:
292                 if (regno >= NR_PALETTE)
293                         return 1;
294
295                 red >>= 8;
296                 green >>= 8;
297                 blue >>= 8;
298
299                 cfb->palette[regno].red   = red;
300                 cfb->palette[regno].green = green;
301                 cfb->palette[regno].blue  = blue;
302
303                 cyber2000fb_writeb(regno, 0x3c8, cfb);
304                 cyber2000fb_writeb(red, 0x3c9, cfb);
305                 cyber2000fb_writeb(green, 0x3c9, cfb);
306                 cyber2000fb_writeb(blue, 0x3c9, cfb);
307                 return 0;
308
309         /*
310          * Direct colour:
311          *          n     rl
312          *  pixel --/--+--/-->  red lut  --> red dac
313          *             |  gl
314          *             +--/--> green lut --> green dac
315          *             |  bl
316          *             +--/-->  blue lut --> blue dac
317          * n = bpp, rl = red length, gl = green length, bl = blue length
318          */
319         case FB_VISUAL_DIRECTCOLOR:
320                 red >>= 8;
321                 green >>= 8;
322                 blue >>= 8;
323
324                 if (var->green.length == 6 && regno < 64) {
325                         cfb->palette[regno << 2].green = green;
326
327                         /*
328                          * The 6 bits of the green component are applied
329                          * to the high 6 bits of the LUT.
330                          */
331                         cyber2000fb_writeb(regno << 2, 0x3c8, cfb);
332                         cyber2000fb_writeb(cfb->palette[regno >> 1].red, 0x3c9, cfb);
333                         cyber2000fb_writeb(green, 0x3c9, cfb);
334                         cyber2000fb_writeb(cfb->palette[regno >> 1].blue, 0x3c9, cfb);
335
336                         green = cfb->palette[regno << 3].green;
337
338                         ret = 0;
339                 }
340
341                 if (var->green.length >= 5 && regno < 32) {
342                         cfb->palette[regno << 3].red   = red;
343                         cfb->palette[regno << 3].green = green;
344                         cfb->palette[regno << 3].blue  = blue;
345
346                         /*
347                          * The 5 bits of each colour component are
348                          * applied to the high 5 bits of the LUT.
349                          */
350                         cyber2000fb_writeb(regno << 3, 0x3c8, cfb);
351                         cyber2000fb_writeb(red, 0x3c9, cfb);
352                         cyber2000fb_writeb(green, 0x3c9, cfb);
353                         cyber2000fb_writeb(blue, 0x3c9, cfb);
354                         ret = 0;
355                 }
356
357                 if (var->green.length == 4 && regno < 16) {
358                         cfb->palette[regno << 4].red   = red;
359                         cfb->palette[regno << 4].green = green;
360                         cfb->palette[regno << 4].blue  = blue;
361
362                         /*
363                          * The 5 bits of each colour component are
364                          * applied to the high 5 bits of the LUT.
365                          */
366                         cyber2000fb_writeb(regno << 4, 0x3c8, cfb);
367                         cyber2000fb_writeb(red, 0x3c9, cfb);
368                         cyber2000fb_writeb(green, 0x3c9, cfb);
369                         cyber2000fb_writeb(blue, 0x3c9, cfb);
370                         ret = 0;
371                 }
372
373                 /*
374                  * Since this is only used for the first 16 colours, we
375                  * don't have to care about overflowing for regno >= 32
376                  */
377                 pseudo_val = regno << var->red.offset |
378                              regno << var->green.offset |
379                              regno << var->blue.offset;
380                 break;
381
382         /*
383          * True colour:
384          *          n     rl
385          *  pixel --/--+--/--> red dac
386          *             |  gl
387          *             +--/--> green dac
388          *             |  bl
389          *             +--/--> blue dac
390          * n = bpp, rl = red length, gl = green length, bl = blue length
391          */
392         case FB_VISUAL_TRUECOLOR:
393                 pseudo_val = convert_bitfield(transp ^ 0xffff, &var->transp);
394                 pseudo_val |= convert_bitfield(red, &var->red);
395                 pseudo_val |= convert_bitfield(green, &var->green);
396                 pseudo_val |= convert_bitfield(blue, &var->blue);
397                 break;
398         }
399
400         /*
401          * Now set our pseudo palette for the CFB16/24/32 drivers.
402          */
403         if (regno < 16)
404                 ((u32 *)cfb->fb.pseudo_palette)[regno] = pseudo_val;
405
406         return ret;
407 }
408
409 struct par_info {
410         /*
411          * Hardware
412          */
413         u_char  clock_mult;
414         u_char  clock_div;
415         u_char  extseqmisc;
416         u_char  co_pixfmt;
417         u_char  crtc_ofl;
418         u_char  crtc[19];
419         u_int   width;
420         u_int   pitch;
421         u_int   fetch;
422
423         /*
424          * Other
425          */
426         u_char  ramdac;
427 };
428
429 static const u_char crtc_idx[] = {
430         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
431         0x08, 0x09,
432         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18
433 };
434
435 static void cyber2000fb_write_ramdac_ctrl(struct cfb_info *cfb)
436 {
437         unsigned int i;
438         unsigned int val = cfb->ramdac_ctrl | cfb->ramdac_powerdown;
439
440         cyber2000fb_writeb(0x56, 0x3ce, cfb);
441         i = cyber2000fb_readb(0x3cf, cfb);
442         cyber2000fb_writeb(i | 4, 0x3cf, cfb);
443         cyber2000fb_writeb(val, 0x3c6, cfb);
444         cyber2000fb_writeb(i, 0x3cf, cfb);
445 }
446
447 static void cyber2000fb_set_timing(struct cfb_info *cfb, struct par_info *hw)
448 {
449         u_int i;
450
451         /*
452          * Blank palette
453          */
454         for (i = 0; i < NR_PALETTE; i++) {
455                 cyber2000fb_writeb(i, 0x3c8, cfb);
456                 cyber2000fb_writeb(0, 0x3c9, cfb);
457                 cyber2000fb_writeb(0, 0x3c9, cfb);
458                 cyber2000fb_writeb(0, 0x3c9, cfb);
459         }
460
461         cyber2000fb_writeb(0xef, 0x3c2, cfb);
462         cyber2000_crtcw(0x11, 0x0b, cfb);
463         cyber2000_attrw(0x11, 0x00, cfb);
464
465         cyber2000_seqw(0x00, 0x01, cfb);
466         cyber2000_seqw(0x01, 0x01, cfb);
467         cyber2000_seqw(0x02, 0x0f, cfb);
468         cyber2000_seqw(0x03, 0x00, cfb);
469         cyber2000_seqw(0x04, 0x0e, cfb);
470         cyber2000_seqw(0x00, 0x03, cfb);
471
472         for (i = 0; i < sizeof(crtc_idx); i++)
473                 cyber2000_crtcw(crtc_idx[i], hw->crtc[i], cfb);
474
475         for (i = 0x0a; i < 0x10; i++)
476                 cyber2000_crtcw(i, 0, cfb);
477
478         cyber2000_grphw(EXT_CRT_VRTOFL, hw->crtc_ofl, cfb);
479         cyber2000_grphw(0x00, 0x00, cfb);
480         cyber2000_grphw(0x01, 0x00, cfb);
481         cyber2000_grphw(0x02, 0x00, cfb);
482         cyber2000_grphw(0x03, 0x00, cfb);
483         cyber2000_grphw(0x04, 0x00, cfb);
484         cyber2000_grphw(0x05, 0x60, cfb);
485         cyber2000_grphw(0x06, 0x05, cfb);
486         cyber2000_grphw(0x07, 0x0f, cfb);
487         cyber2000_grphw(0x08, 0xff, cfb);
488
489         /* Attribute controller registers */
490         for (i = 0; i < 16; i++)
491                 cyber2000_attrw(i, i, cfb);
492
493         cyber2000_attrw(0x10, 0x01, cfb);
494         cyber2000_attrw(0x11, 0x00, cfb);
495         cyber2000_attrw(0x12, 0x0f, cfb);
496         cyber2000_attrw(0x13, 0x00, cfb);
497         cyber2000_attrw(0x14, 0x00, cfb);
498
499         /* PLL registers */
500         cyber2000_grphw(EXT_DCLK_MULT, hw->clock_mult, cfb);
501         cyber2000_grphw(EXT_DCLK_DIV,  hw->clock_div, cfb);
502         cyber2000_grphw(EXT_MCLK_MULT, cfb->mclk_mult, cfb);
503         cyber2000_grphw(EXT_MCLK_DIV,  cfb->mclk_div, cfb);
504         cyber2000_grphw(0x90, 0x01, cfb);
505         cyber2000_grphw(0xb9, 0x80, cfb);
506         cyber2000_grphw(0xb9, 0x00, cfb);
507
508         cfb->ramdac_ctrl = hw->ramdac;
509         cyber2000fb_write_ramdac_ctrl(cfb);
510
511         cyber2000fb_writeb(0x20, 0x3c0, cfb);
512         cyber2000fb_writeb(0xff, 0x3c6, cfb);
513
514         cyber2000_grphw(0x14, hw->fetch, cfb);
515         cyber2000_grphw(0x15, ((hw->fetch >> 8) & 0x03) |
516                               ((hw->pitch >> 4) & 0x30), cfb);
517         cyber2000_grphw(EXT_SEQ_MISC, hw->extseqmisc, cfb);
518
519         /*
520          * Set up accelerator registers
521          */
522         cyber2000fb_writew(hw->width,     CO_REG_SRC_WIDTH,  cfb);
523         cyber2000fb_writew(hw->width,     CO_REG_DEST_WIDTH, cfb);
524         cyber2000fb_writeb(hw->co_pixfmt, CO_REG_PIXFMT, cfb);
525 }
526
527 static inline int
528 cyber2000fb_update_start(struct cfb_info *cfb, struct fb_var_screeninfo *var)
529 {
530         u_int base = var->yoffset * var->xres_virtual + var->xoffset;
531
532         base *= var->bits_per_pixel;
533
534         /*
535          * Convert to bytes and shift two extra bits because DAC
536          * can only start on 4 byte aligned data.
537          */
538         base >>= 5;
539
540         if (base >= 1 << 20)
541                 return -EINVAL;
542
543         cyber2000_grphw(0x10, base >> 16 | 0x10, cfb);
544         cyber2000_crtcw(0x0c, base >> 8, cfb);
545         cyber2000_crtcw(0x0d, base, cfb);
546
547         return 0;
548 }
549
550 static int
551 cyber2000fb_decode_crtc(struct par_info *hw, struct cfb_info *cfb,
552                         struct fb_var_screeninfo *var)
553 {
554         u_int Htotal, Hblankend, Hsyncend;
555         u_int Vtotal, Vdispend, Vblankstart, Vblankend, Vsyncstart, Vsyncend;
556 #define BIT(v,b1,m,b2) (((v >> b1) & m) << b2)
557
558         hw->crtc[13] = hw->pitch;
559         hw->crtc[17] = 0xe3;
560         hw->crtc[14] = 0;
561         hw->crtc[8]  = 0;
562
563         Htotal      = var->xres + var->right_margin +
564                       var->hsync_len + var->left_margin;
565
566         if (Htotal > 2080)
567                 return -EINVAL;
568
569         hw->crtc[0] = (Htotal >> 3) - 5;
570         hw->crtc[1] = (var->xres >> 3) - 1;
571         hw->crtc[2] = var->xres >> 3;
572         hw->crtc[4] = (var->xres + var->right_margin) >> 3;
573
574         Hblankend   = (Htotal - 4*8) >> 3;
575
576         hw->crtc[3] = BIT(Hblankend,  0, 0x1f,  0) |
577                       BIT(1,          0, 0x01,  7);
578
579         Hsyncend    = (var->xres + var->right_margin + var->hsync_len) >> 3;
580
581         hw->crtc[5] = BIT(Hsyncend,   0, 0x1f,  0) |
582                       BIT(Hblankend,  5, 0x01,  7);
583
584         Vdispend    = var->yres - 1;
585         Vsyncstart  = var->yres + var->lower_margin;
586         Vsyncend    = var->yres + var->lower_margin + var->vsync_len;
587         Vtotal      = var->yres + var->lower_margin + var->vsync_len +
588                       var->upper_margin - 2;
589
590         if (Vtotal > 2047)
591                 return -EINVAL;
592
593         Vblankstart = var->yres + 6;
594         Vblankend   = Vtotal - 10;
595
596         hw->crtc[6]  = Vtotal;
597         hw->crtc[7]  = BIT(Vtotal,     8, 0x01,  0) |
598                         BIT(Vdispend,   8, 0x01,  1) |
599                         BIT(Vsyncstart, 8, 0x01,  2) |
600                         BIT(Vblankstart,8, 0x01,  3) |
601                         BIT(1,          0, 0x01,  4) |
602                         BIT(Vtotal,     9, 0x01,  5) |
603                         BIT(Vdispend,   9, 0x01,  6) |
604                         BIT(Vsyncstart, 9, 0x01,  7);
605         hw->crtc[9]  = BIT(0,          0, 0x1f,  0) |
606                         BIT(Vblankstart,9, 0x01,  5) |
607                         BIT(1,          0, 0x01,  6);
608         hw->crtc[10] = Vsyncstart;
609         hw->crtc[11] = BIT(Vsyncend,   0, 0x0f,  0) |
610                        BIT(1,          0, 0x01,  7);
611         hw->crtc[12] = Vdispend;
612         hw->crtc[15] = Vblankstart;
613         hw->crtc[16] = Vblankend;
614         hw->crtc[18] = 0xff;
615
616         /*
617          * overflow - graphics reg 0x11
618          * 0=VTOTAL:10 1=VDEND:10 2=VRSTART:10 3=VBSTART:10
619          * 4=LINECOMP:10 5-IVIDEO 6=FIXCNT
620          */
621         hw->crtc_ofl =
622                 BIT(Vtotal,     10, 0x01,  0) |
623                 BIT(Vdispend,   10, 0x01,  1) |
624                 BIT(Vsyncstart, 10, 0x01,  2) |
625                 BIT(Vblankstart,10, 0x01,  3) |
626                 EXT_CRT_VRTOFL_LINECOMP10;
627
628         /* woody: set the interlaced bit... */
629         /* FIXME: what about doublescan? */
630         if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
631                 hw->crtc_ofl |= EXT_CRT_VRTOFL_INTERLACE;
632
633         return 0;
634 }
635
636 /*
637  * The following was discovered by a good monitor, bit twiddling, theorising
638  * and but mostly luck.  Strangely, it looks like everyone elses' PLL!
639  *
640  * Clock registers:
641  *   fclock = fpll / div2
642  *   fpll   = fref * mult / div1
643  * where:
644  *   fref = 14.318MHz (69842ps)
645  *   mult = reg0xb0.7:0
646  *   div1 = (reg0xb1.5:0 + 1)
647  *   div2 =  2^(reg0xb1.7:6)
648  *   fpll should be between 115 and 260 MHz
649  *  (8696ps and 3846ps)
650  */
651 static int
652 cyber2000fb_decode_clock(struct par_info *hw, struct cfb_info *cfb,
653                          struct fb_var_screeninfo *var)
654 {
655         u_long pll_ps = var->pixclock;
656         const u_long ref_ps = cfb->ref_ps;
657         u_int div2, t_div1, best_div1, best_mult;
658         int best_diff;
659         int vco;
660
661         /*
662          * Step 1:
663          *   find div2 such that 115MHz < fpll < 260MHz
664          *   and 0 <= div2 < 4
665          */
666         for (div2 = 0; div2 < 4; div2++) {
667                 u_long new_pll;
668
669                 new_pll = pll_ps / cfb->divisors[div2];
670                 if (8696 > new_pll && new_pll > 3846) {
671                         pll_ps = new_pll;
672                         break;
673                 }
674         }
675
676         if (div2 == 4)
677                 return -EINVAL;
678
679         /*
680          * Step 2:
681          *  Given pll_ps and ref_ps, find:
682          *    pll_ps * 0.995 < pll_ps_calc < pll_ps * 1.005
683          *  where { 1 < best_div1 < 32, 1 < best_mult < 256 }
684          *    pll_ps_calc = best_div1 / (ref_ps * best_mult)
685          */
686         best_diff = 0x7fffffff;
687         best_mult = 32;
688         best_div1 = 255;
689         for (t_div1 = 32; t_div1 > 1; t_div1 -= 1) {
690                 u_int rr, t_mult, t_pll_ps;
691                 int diff;
692
693                 /*
694                  * Find the multiplier for this divisor
695                  */
696                 rr = ref_ps * t_div1;
697                 t_mult = (rr + pll_ps / 2) / pll_ps;
698
699                 /*
700                  * Is the multiplier within the correct range?
701                  */
702                 if (t_mult > 256 || t_mult < 2)
703                         continue;
704
705                 /*
706                  * Calculate the actual clock period from this multiplier
707                  * and divisor, and estimate the error.
708                  */
709                 t_pll_ps = (rr + t_mult / 2) / t_mult;
710                 diff = pll_ps - t_pll_ps;
711                 if (diff < 0)
712                         diff = -diff;
713
714                 if (diff < best_diff) {
715                         best_diff = diff;
716                         best_mult = t_mult;
717                         best_div1 = t_div1;
718                 }
719
720                 /*
721                  * If we hit an exact value, there is no point in continuing.
722                  */
723                 if (diff == 0)
724                         break;
725         }
726
727         /*
728          * Step 3:
729          *  combine values
730          */
731         hw->clock_mult = best_mult - 1;
732         hw->clock_div  = div2 << 6 | (best_div1 - 1);
733
734         vco = ref_ps * best_div1 / best_mult;
735         if ((ref_ps == 40690) && (vco < 5556))
736                 /* Set VFSEL when VCO > 180MHz (5.556 ps). */
737                 hw->clock_div |= EXT_DCLK_DIV_VFSEL;
738
739         return 0;
740 }
741
742 /*
743  *    Set the User Defined Part of the Display
744  */
745 static int
746 cyber2000fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
747 {
748         struct cfb_info *cfb = (struct cfb_info *)info;
749         struct par_info hw;
750         unsigned int mem;
751         int err;
752
753         var->transp.msb_right   = 0;
754         var->red.msb_right      = 0;
755         var->green.msb_right    = 0;
756         var->blue.msb_right     = 0;
757
758         switch (var->bits_per_pixel) {
759         case 8: /* PSEUDOCOLOUR, 256 */
760                 var->transp.offset      = 0;
761                 var->transp.length      = 0;
762                 var->red.offset         = 0;
763                 var->red.length         = 8;
764                 var->green.offset       = 0;
765                 var->green.length       = 8;
766                 var->blue.offset        = 0;
767                 var->blue.length        = 8;
768                 break;
769
770         case 16:/* DIRECTCOLOUR, 64k or 32k */
771                 switch (var->green.length) {
772                 case 6: /* RGB565, 64k */
773                         var->transp.offset      = 0;
774                         var->transp.length      = 0;
775                         var->red.offset         = 11;
776                         var->red.length         = 5;
777                         var->green.offset       = 5;
778                         var->green.length       = 6;
779                         var->blue.offset        = 0;
780                         var->blue.length        = 5;
781                         break;
782
783                 default:
784                 case 5: /* RGB555, 32k */
785                         var->transp.offset      = 0;
786                         var->transp.length      = 0;
787                         var->red.offset         = 10;
788                         var->red.length         = 5;
789                         var->green.offset       = 5;
790                         var->green.length       = 5;
791                         var->blue.offset        = 0;
792                         var->blue.length        = 5;
793                         break;
794
795                 case 4: /* RGB444, 4k + transparency? */
796                         var->transp.offset      = 12;
797                         var->transp.length      = 4;
798                         var->red.offset         = 8;
799                         var->red.length         = 4;
800                         var->green.offset       = 4;
801                         var->green.length       = 4;
802                         var->blue.offset        = 0;
803                         var->blue.length        = 4;
804                         break;
805                 }
806                 break;
807
808         case 24:/* TRUECOLOUR, 16m */
809                 var->transp.offset      = 0;
810                 var->transp.length      = 0;
811                 var->red.offset         = 16;
812                 var->red.length         = 8;
813                 var->green.offset       = 8;
814                 var->green.length       = 8;
815                 var->blue.offset        = 0;
816                 var->blue.length        = 8;
817                 break;
818
819         case 32:/* TRUECOLOUR, 16m */
820                 var->transp.offset      = 24;
821                 var->transp.length      = 8;
822                 var->red.offset         = 16;
823                 var->red.length         = 8;
824                 var->green.offset       = 8;
825                 var->green.length       = 8;
826                 var->blue.offset        = 0;
827                 var->blue.length        = 8;
828                 break;
829
830         default:
831                 return -EINVAL;
832         }
833
834         mem = var->xres_virtual * var->yres_virtual * (var->bits_per_pixel / 8);
835         if (mem > cfb->fb.fix.smem_len)
836                 var->yres_virtual = cfb->fb.fix.smem_len * 8 /
837                         (var->bits_per_pixel * var->xres_virtual);
838
839         if (var->yres > var->yres_virtual)
840                 var->yres = var->yres_virtual;
841         if (var->xres > var->xres_virtual)
842                 var->xres = var->xres_virtual;
843
844         err = cyber2000fb_decode_clock(&hw, cfb, var);
845         if (err)
846                 return err;
847
848         err = cyber2000fb_decode_crtc(&hw, cfb, var);
849         if (err)
850                 return err;
851
852         return 0;
853 }
854
855 static int cyber2000fb_set_par(struct fb_info *info)
856 {
857         struct cfb_info *cfb = (struct cfb_info *)info;
858         struct fb_var_screeninfo *var = &cfb->fb.var;
859         struct par_info hw;
860         unsigned int mem;
861
862         hw.width = var->xres_virtual;
863         hw.ramdac = RAMDAC_VREFEN | RAMDAC_DAC8BIT;
864
865         switch (var->bits_per_pixel) {
866         case 8:
867                 hw.co_pixfmt            = CO_PIXFMT_8BPP;
868                 hw.pitch                = hw.width >> 3;
869                 hw.extseqmisc           = EXT_SEQ_MISC_8;
870                 break;
871
872         case 16:
873                 hw.co_pixfmt            = CO_PIXFMT_16BPP;
874                 hw.pitch                = hw.width >> 2;
875
876                 switch (var->green.length) {
877                 case 6: /* RGB565, 64k */
878                         hw.extseqmisc   = EXT_SEQ_MISC_16_RGB565;
879                         break;
880                 case 5: /* RGB555, 32k */
881                         hw.extseqmisc   = EXT_SEQ_MISC_16_RGB555;
882                         break;
883                 case 4: /* RGB444, 4k + transparency? */
884                         hw.extseqmisc   = EXT_SEQ_MISC_16_RGB444;
885                         break;
886                 default:
887                         BUG();
888                 }
889         case 24:/* TRUECOLOUR, 16m */
890                 hw.co_pixfmt            = CO_PIXFMT_24BPP;
891                 hw.width                *= 3;
892                 hw.pitch                = hw.width >> 3;
893                 hw.ramdac               |= (RAMDAC_BYPASS | RAMDAC_RAMPWRDN);
894                 hw.extseqmisc           = EXT_SEQ_MISC_24_RGB888;
895                 break;
896
897         case 32:/* TRUECOLOUR, 16m */
898                 hw.co_pixfmt            = CO_PIXFMT_32BPP;
899                 hw.pitch                = hw.width >> 1;
900                 hw.ramdac               |= (RAMDAC_BYPASS | RAMDAC_RAMPWRDN);
901                 hw.extseqmisc           = EXT_SEQ_MISC_32;
902                 break;
903
904         default:
905                 BUG();
906         }
907
908         /*
909          * Sigh, this is absolutely disgusting, but caused by
910          * the way the fbcon developers want to separate out
911          * the "checking" and the "setting" of the video mode.
912          *
913          * If the mode is not suitable for the hardware here,
914          * we can't prevent it being set by returning an error.
915          *
916          * In theory, since NetWinders contain just one VGA card,
917          * we should never end up hitting this problem.
918          */
919         BUG_ON(cyber2000fb_decode_clock(&hw, cfb, var) != 0);
920         BUG_ON(cyber2000fb_decode_crtc(&hw, cfb, var) != 0);
921
922         hw.width -= 1;
923         hw.fetch = hw.pitch;
924         if (!(cfb->mem_ctl2 & MEM_CTL2_64BIT))
925                 hw.fetch <<= 1;
926         hw.fetch += 1;
927
928         cfb->fb.fix.line_length = var->xres_virtual * var->bits_per_pixel / 8;
929
930         /*
931          * Same here - if the size of the video mode exceeds the
932          * available RAM, we can't prevent this mode being set.
933          *
934          * In theory, since NetWinders contain just one VGA card,
935          * we should never end up hitting this problem.
936          */
937         mem = cfb->fb.fix.line_length * var->yres_virtual;
938         BUG_ON(mem > cfb->fb.fix.smem_len);
939
940         /*
941          * 8bpp displays are always pseudo colour.  16bpp and above
942          * are direct colour or true colour, depending on whether
943          * the RAMDAC palettes are bypassed.  (Direct colour has
944          * palettes, true colour does not.)
945          */
946         if (var->bits_per_pixel == 8)
947                 cfb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
948         else if (hw.ramdac & RAMDAC_BYPASS)
949                 cfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
950         else
951                 cfb->fb.fix.visual = FB_VISUAL_DIRECTCOLOR;
952
953         cyber2000fb_set_timing(cfb, &hw);
954         cyber2000fb_update_start(cfb, var);
955
956         return 0;
957 }
958
959
960 /*
961  *    Pan or Wrap the Display
962  */
963 static int
964 cyber2000fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
965 {
966         struct cfb_info *cfb = (struct cfb_info *)info;
967
968         if (cyber2000fb_update_start(cfb, var))
969                 return -EINVAL;
970
971         cfb->fb.var.xoffset = var->xoffset;
972         cfb->fb.var.yoffset = var->yoffset;
973
974         if (var->vmode & FB_VMODE_YWRAP) {
975                 cfb->fb.var.vmode |= FB_VMODE_YWRAP;
976         } else {
977                 cfb->fb.var.vmode &= ~FB_VMODE_YWRAP;
978         }
979
980         return 0;
981 }
982
983 /*
984  *    (Un)Blank the display.
985  *
986  *  Blank the screen if blank_mode != 0, else unblank. If
987  *  blank == NULL then the caller blanks by setting the CLUT
988  *  (Color Look Up Table) to all black. Return 0 if blanking
989  *  succeeded, != 0 if un-/blanking failed due to e.g. a
990  *  video mode which doesn't support it. Implements VESA
991  *  suspend and powerdown modes on hardware that supports
992  *  disabling hsync/vsync:
993  *    blank_mode == 2: suspend vsync
994  *    blank_mode == 3: suspend hsync
995  *    blank_mode == 4: powerdown
996  *
997  *  wms...Enable VESA DMPS compatible powerdown mode
998  *  run "setterm -powersave powerdown" to take advantage
999  */
1000 static int cyber2000fb_blank(int blank, struct fb_info *info)
1001 {
1002         struct cfb_info *cfb = (struct cfb_info *)info;
1003         unsigned int sync = 0;
1004         int i;
1005
1006         switch (blank) {
1007         case FB_BLANK_POWERDOWN:        /* powerdown - both sync lines down */
1008                 sync = EXT_SYNC_CTL_VS_0 | EXT_SYNC_CTL_HS_0;
1009                 break;  
1010         case FB_BLANK_HSYNC_SUSPEND:    /* hsync off */
1011                 sync = EXT_SYNC_CTL_VS_NORMAL | EXT_SYNC_CTL_HS_0;
1012                 break;  
1013         case FB_BLANK_VSYNC_SUSPEND:    /* vsync off */
1014                 sync = EXT_SYNC_CTL_VS_0 | EXT_SYNC_CTL_HS_NORMAL;
1015                 break;
1016         case FB_BLANK_NORMAL:           /* soft blank */
1017         default: /* unblank */
1018                 break;
1019         }
1020
1021         cyber2000_grphw(EXT_SYNC_CTL, sync, cfb);
1022
1023         if (blank <= 1) {
1024                 /* turn on ramdacs */
1025                 cfb->ramdac_powerdown &= ~(RAMDAC_DACPWRDN | RAMDAC_BYPASS | RAMDAC_RAMPWRDN);
1026                 cyber2000fb_write_ramdac_ctrl(cfb);
1027         }
1028
1029         /*
1030          * Soft blank/unblank the display.
1031          */
1032         if (blank) {    /* soft blank */
1033                 for (i = 0; i < NR_PALETTE; i++) {
1034                         cyber2000fb_writeb(i, 0x3c8, cfb);
1035                         cyber2000fb_writeb(0, 0x3c9, cfb);
1036                         cyber2000fb_writeb(0, 0x3c9, cfb);
1037                         cyber2000fb_writeb(0, 0x3c9, cfb);
1038                 }
1039         } else {        /* unblank */
1040                 for (i = 0; i < NR_PALETTE; i++) {
1041                         cyber2000fb_writeb(i, 0x3c8, cfb);
1042                         cyber2000fb_writeb(cfb->palette[i].red, 0x3c9, cfb);
1043                         cyber2000fb_writeb(cfb->palette[i].green, 0x3c9, cfb);
1044                         cyber2000fb_writeb(cfb->palette[i].blue, 0x3c9, cfb);
1045                 }
1046         }
1047
1048         if (blank >= 2) {
1049                 /* turn off ramdacs */
1050                 cfb->ramdac_powerdown |= RAMDAC_DACPWRDN | RAMDAC_BYPASS | RAMDAC_RAMPWRDN;
1051                 cyber2000fb_write_ramdac_ctrl(cfb);
1052         }
1053
1054         return 0;
1055 }
1056
1057 static struct fb_ops cyber2000fb_ops = {
1058         .owner          = THIS_MODULE,
1059         .fb_check_var   = cyber2000fb_check_var,
1060         .fb_set_par     = cyber2000fb_set_par,
1061         .fb_setcolreg   = cyber2000fb_setcolreg,
1062         .fb_blank       = cyber2000fb_blank,
1063         .fb_pan_display = cyber2000fb_pan_display,
1064         .fb_fillrect    = cyber2000fb_fillrect,
1065         .fb_copyarea    = cyber2000fb_copyarea,
1066         .fb_imageblit   = cyber2000fb_imageblit,
1067         .fb_cursor      = soft_cursor,
1068         .fb_sync        = cyber2000fb_sync,
1069 };
1070
1071 /*
1072  * This is the only "static" reference to the internal data structures
1073  * of this driver.  It is here solely at the moment to support the other
1074  * CyberPro modules external to this driver.
1075  */
1076 static struct cfb_info          *int_cfb_info;
1077
1078 /*
1079  * Enable access to the extended registers
1080  */
1081 void cyber2000fb_enable_extregs(struct cfb_info *cfb)
1082 {
1083         cfb->func_use_count += 1;
1084
1085         if (cfb->func_use_count == 1) {
1086                 int old;
1087
1088                 old = cyber2000_grphr(EXT_FUNC_CTL, cfb);
1089                 old |= EXT_FUNC_CTL_EXTREGENBL;
1090                 cyber2000_grphw(EXT_FUNC_CTL, old, cfb);
1091         }
1092 }
1093
1094 /*
1095  * Disable access to the extended registers
1096  */
1097 void cyber2000fb_disable_extregs(struct cfb_info *cfb)
1098 {
1099         if (cfb->func_use_count == 1) {
1100                 int old;
1101
1102                 old = cyber2000_grphr(EXT_FUNC_CTL, cfb);
1103                 old &= ~EXT_FUNC_CTL_EXTREGENBL;
1104                 cyber2000_grphw(EXT_FUNC_CTL, old, cfb);
1105         }
1106
1107         if (cfb->func_use_count == 0)
1108                 printk(KERN_ERR "disable_extregs: count = 0\n");
1109         else
1110                 cfb->func_use_count -= 1;
1111 }
1112
1113 void cyber2000fb_get_fb_var(struct cfb_info *cfb, struct fb_var_screeninfo *var)
1114 {
1115         memcpy(var, &cfb->fb.var, sizeof(struct fb_var_screeninfo));
1116 }
1117
1118 /*
1119  * Attach a capture/tv driver to the core CyberX0X0 driver.
1120  */
1121 int cyber2000fb_attach(struct cyberpro_info *info, int idx)
1122 {
1123         if (int_cfb_info != NULL) {
1124                 info->dev             = int_cfb_info->dev;
1125                 info->regs            = int_cfb_info->regs;
1126                 info->fb              = int_cfb_info->fb.screen_base;
1127                 info->fb_size         = int_cfb_info->fb.fix.smem_len;
1128                 info->enable_extregs  = cyber2000fb_enable_extregs;
1129                 info->disable_extregs = cyber2000fb_disable_extregs;
1130                 info->info            = int_cfb_info;
1131
1132                 strlcpy(info->dev_name, int_cfb_info->fb.fix.id, sizeof(info->dev_name));
1133         }
1134
1135         return int_cfb_info != NULL;
1136 }
1137
1138 /*
1139  * Detach a capture/tv driver from the core CyberX0X0 driver.
1140  */
1141 void cyber2000fb_detach(int idx)
1142 {
1143 }
1144
1145 EXPORT_SYMBOL(cyber2000fb_attach);
1146 EXPORT_SYMBOL(cyber2000fb_detach);
1147 EXPORT_SYMBOL(cyber2000fb_enable_extregs);
1148 EXPORT_SYMBOL(cyber2000fb_disable_extregs);
1149 EXPORT_SYMBOL(cyber2000fb_get_fb_var);
1150
1151 /*
1152  * These parameters give
1153  * 640x480, hsync 31.5kHz, vsync 60Hz
1154  */
1155 static struct fb_videomode __devinitdata cyber2000fb_default_mode = {
1156         .refresh        = 60,
1157         .xres           = 640,
1158         .yres           = 480,
1159         .pixclock       = 39722,
1160         .left_margin    = 56,
1161         .right_margin   = 16,
1162         .upper_margin   = 34,
1163         .lower_margin   = 9,
1164         .hsync_len      = 88,
1165         .vsync_len      = 2,
1166         .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
1167         .vmode          = FB_VMODE_NONINTERLACED
1168 };
1169
1170 static char igs_regs[] = {
1171         EXT_CRT_IRQ,            0,
1172         EXT_CRT_TEST,           0,
1173         EXT_SYNC_CTL,           0,
1174         EXT_SEG_WRITE_PTR,      0,
1175         EXT_SEG_READ_PTR,       0,
1176         EXT_BIU_MISC,           EXT_BIU_MISC_LIN_ENABLE |
1177                                 EXT_BIU_MISC_COP_ENABLE |
1178                                 EXT_BIU_MISC_COP_BFC,
1179         EXT_FUNC_CTL,           0,
1180         CURS_H_START,           0,
1181         CURS_H_START + 1,       0,
1182         CURS_H_PRESET,          0,
1183         CURS_V_START,           0,
1184         CURS_V_START + 1,       0,
1185         CURS_V_PRESET,          0,
1186         CURS_CTL,               0,
1187         EXT_ATTRIB_CTL,         EXT_ATTRIB_CTL_EXT,
1188         EXT_OVERSCAN_RED,       0,
1189         EXT_OVERSCAN_GREEN,     0,
1190         EXT_OVERSCAN_BLUE,      0,
1191
1192         /* some of these are questionable when we have a BIOS */
1193         EXT_MEM_CTL0,           EXT_MEM_CTL0_7CLK |
1194                                 EXT_MEM_CTL0_RAS_1 |
1195                                 EXT_MEM_CTL0_MULTCAS,
1196         EXT_HIDDEN_CTL1,        0x30,
1197         EXT_FIFO_CTL,           0x0b,
1198         EXT_FIFO_CTL + 1,       0x17,
1199         0x76,                   0x00,
1200         EXT_HIDDEN_CTL4,        0xc8
1201 };
1202
1203 /*
1204  * Initialise the CyberPro hardware.  On the CyberPro5XXXX,
1205  * ensure that we're using the correct PLL (5XXX's may be
1206  * programmed to use an additional set of PLLs.)
1207  */
1208 static void cyberpro_init_hw(struct cfb_info *cfb)
1209 {
1210         int i;
1211
1212         for (i = 0; i < sizeof(igs_regs); i += 2)
1213                 cyber2000_grphw(igs_regs[i], igs_regs[i+1], cfb);
1214
1215         if (cfb->id == ID_CYBERPRO_5000) {
1216                 unsigned char val;
1217                 cyber2000fb_writeb(0xba, 0x3ce, cfb);
1218                 val = cyber2000fb_readb(0x3cf, cfb) & 0x80;
1219                 cyber2000fb_writeb(val, 0x3cf, cfb);
1220         }
1221 }
1222
1223 static struct cfb_info * __devinit
1224 cyberpro_alloc_fb_info(unsigned int id, char *name)
1225 {
1226         struct cfb_info *cfb;
1227
1228         cfb = kmalloc(sizeof(struct cfb_info), GFP_KERNEL);
1229         if (!cfb)
1230                 return NULL;
1231
1232         memset(cfb, 0, sizeof(struct cfb_info));
1233
1234         cfb->id                 = id;
1235
1236         if (id == ID_CYBERPRO_5000)
1237                 cfb->ref_ps     = 40690; // 24.576 MHz
1238         else
1239                 cfb->ref_ps     = 69842; // 14.31818 MHz (69841?)
1240
1241         cfb->divisors[0]        = 1;
1242         cfb->divisors[1]        = 2;
1243         cfb->divisors[2]        = 4;
1244
1245         if (id == ID_CYBERPRO_2000)
1246                 cfb->divisors[3] = 8;
1247         else
1248                 cfb->divisors[3] = 6;
1249
1250         strcpy(cfb->fb.fix.id, name);
1251
1252         cfb->fb.fix.type        = FB_TYPE_PACKED_PIXELS;
1253         cfb->fb.fix.type_aux    = 0;
1254         cfb->fb.fix.xpanstep    = 0;
1255         cfb->fb.fix.ypanstep    = 1;
1256         cfb->fb.fix.ywrapstep   = 0;
1257
1258         switch (id) {
1259         case ID_IGA_1682:
1260                 cfb->fb.fix.accel = 0;
1261                 break;
1262
1263         case ID_CYBERPRO_2000:
1264                 cfb->fb.fix.accel = FB_ACCEL_IGS_CYBER2000;
1265                 break;
1266
1267         case ID_CYBERPRO_2010:
1268                 cfb->fb.fix.accel = FB_ACCEL_IGS_CYBER2010;
1269                 break;
1270
1271         case ID_CYBERPRO_5000:
1272                 cfb->fb.fix.accel = FB_ACCEL_IGS_CYBER5000;
1273                 break;
1274         }
1275
1276         cfb->fb.var.nonstd      = 0;
1277         cfb->fb.var.activate    = FB_ACTIVATE_NOW;
1278         cfb->fb.var.height      = -1;
1279         cfb->fb.var.width       = -1;
1280         cfb->fb.var.accel_flags = FB_ACCELF_TEXT;
1281
1282         cfb->fb.fbops           = &cyber2000fb_ops;
1283         cfb->fb.flags           = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1284         cfb->fb.pseudo_palette  = cfb->pseudo_palette;
1285
1286         fb_alloc_cmap(&cfb->fb.cmap, NR_PALETTE, 0);
1287
1288         return cfb;
1289 }
1290
1291 static void
1292 cyberpro_free_fb_info(struct cfb_info *cfb)
1293 {
1294         if (cfb) {
1295                 /*
1296                  * Free the colourmap
1297                  */
1298                 fb_alloc_cmap(&cfb->fb.cmap, 0, 0);
1299
1300                 kfree(cfb);
1301         }
1302 }
1303
1304 /*
1305  * Parse Cyber2000fb options.  Usage:
1306  *  video=cyber2000:font:fontname
1307  */
1308 #ifndef MODULE
1309 static int
1310 cyber2000fb_setup(char *options)
1311 {
1312         char *opt;
1313
1314         if (!options || !*options)
1315                 return 0;
1316
1317         while ((opt = strsep(&options, ",")) != NULL) {
1318                 if (!*opt)
1319                         continue;
1320
1321                 if (strncmp(opt, "font:", 5) == 0) {
1322                         static char default_font_storage[40];
1323
1324                         strlcpy(default_font_storage, opt + 5, sizeof(default_font_storage));
1325                         default_font = default_font_storage;
1326                         continue;
1327                 }
1328
1329                 printk(KERN_ERR "CyberPro20x0: unknown parameter: %s\n", opt);
1330         }
1331         return 0;
1332 }
1333 #endif  /*  MODULE  */
1334
1335 /*
1336  * The CyberPro chips can be placed on many different bus types.
1337  * This probe function is common to all bus types.  The bus-specific
1338  * probe function is expected to have:
1339  *  - enabled access to the linear memory region
1340  *  - memory mapped access to the registers
1341  *  - initialised mem_ctl1 and mem_ctl2 appropriately.
1342  */
1343 static int __devinit cyberpro_common_probe(struct cfb_info *cfb)
1344 {
1345         u_long smem_size;
1346         u_int h_sync, v_sync;
1347         int err;
1348
1349         cyberpro_init_hw(cfb);
1350
1351         /*
1352          * Get the video RAM size and width from the VGA register.
1353          * This should have been already initialised by the BIOS,
1354          * but if it's garbage, claim default 1MB VRAM (woody)
1355          */
1356         cfb->mem_ctl1 = cyber2000_grphr(EXT_MEM_CTL1, cfb);
1357         cfb->mem_ctl2 = cyber2000_grphr(EXT_MEM_CTL2, cfb);
1358
1359         /*
1360          * Determine the size of the memory.
1361          */
1362         switch (cfb->mem_ctl2 & MEM_CTL2_SIZE_MASK) {
1363         case MEM_CTL2_SIZE_4MB: smem_size = 0x00400000; break;
1364         case MEM_CTL2_SIZE_2MB: smem_size = 0x00200000; break;
1365         case MEM_CTL2_SIZE_1MB: smem_size = 0x00100000; break;
1366         default:                smem_size = 0x00100000; break;
1367         }
1368
1369         cfb->fb.fix.smem_len   = smem_size;
1370         cfb->fb.fix.mmio_len   = MMIO_SIZE;
1371         cfb->fb.screen_base    = cfb->region;
1372
1373         err = -EINVAL;
1374         if (!fb_find_mode(&cfb->fb.var, &cfb->fb, NULL, NULL, 0,
1375                           &cyber2000fb_default_mode, 8)) {
1376                 printk("%s: no valid mode found\n", cfb->fb.fix.id);
1377                 goto failed;
1378         }
1379
1380         cfb->fb.var.yres_virtual = cfb->fb.fix.smem_len * 8 /
1381                         (cfb->fb.var.bits_per_pixel * cfb->fb.var.xres_virtual);
1382
1383         if (cfb->fb.var.yres_virtual < cfb->fb.var.yres)
1384                 cfb->fb.var.yres_virtual = cfb->fb.var.yres;
1385
1386 //      fb_set_var(&cfb->fb.var, -1, &cfb->fb);
1387
1388         /*
1389          * Calculate the hsync and vsync frequencies.  Note that
1390          * we split the 1e12 constant up so that we can preserve
1391          * the precision and fit the results into 32-bit registers.
1392          *  (1953125000 * 512 = 1e12)
1393          */
1394         h_sync = 1953125000 / cfb->fb.var.pixclock;
1395         h_sync = h_sync * 512 / (cfb->fb.var.xres + cfb->fb.var.left_margin +
1396                  cfb->fb.var.right_margin + cfb->fb.var.hsync_len);
1397         v_sync = h_sync / (cfb->fb.var.yres + cfb->fb.var.upper_margin +
1398                  cfb->fb.var.lower_margin + cfb->fb.var.vsync_len);
1399
1400         printk(KERN_INFO "%s: %dKiB VRAM, using %dx%d, %d.%03dkHz, %dHz\n",
1401                 cfb->fb.fix.id, cfb->fb.fix.smem_len >> 10,
1402                 cfb->fb.var.xres, cfb->fb.var.yres,
1403                 h_sync / 1000, h_sync % 1000, v_sync);
1404
1405         if (cfb->dev)
1406                 cfb->fb.device = &cfb->dev->dev;
1407         err = register_framebuffer(&cfb->fb);
1408
1409 failed:
1410         return err;
1411 }
1412
1413 static void cyberpro_common_resume(struct cfb_info *cfb)
1414 {
1415         cyberpro_init_hw(cfb);
1416
1417         /*
1418          * Reprogram the MEM_CTL1 and MEM_CTL2 registers
1419          */
1420         cyber2000_grphw(EXT_MEM_CTL1, cfb->mem_ctl1, cfb);
1421         cyber2000_grphw(EXT_MEM_CTL2, cfb->mem_ctl2, cfb);
1422
1423         /*
1424          * Restore the old video mode and the palette.
1425          * We also need to tell fbcon to redraw the console.
1426          */
1427         cyber2000fb_set_par(&cfb->fb);
1428 }
1429
1430 #ifdef CONFIG_ARCH_SHARK
1431
1432 #include <asm/arch/hardware.h>
1433
1434 static int __devinit
1435 cyberpro_vl_probe(void)
1436 {
1437         struct cfb_info *cfb;
1438         int err = -ENOMEM;
1439
1440         if (!request_mem_region(FB_START,FB_SIZE,"CyberPro2010")) return err;
1441
1442         cfb = cyberpro_alloc_fb_info(ID_CYBERPRO_2010, "CyberPro2010");
1443         if (!cfb)
1444                 goto failed_release;
1445
1446         cfb->dev = NULL;
1447         cfb->region = ioremap(FB_START,FB_SIZE);
1448         if (!cfb->region)
1449                 goto failed_ioremap;
1450
1451         cfb->regs = cfb->region + MMIO_OFFSET;
1452         cfb->fb.fix.mmio_start = FB_START + MMIO_OFFSET;
1453         cfb->fb.fix.smem_start = FB_START;
1454
1455         /*
1456          * Bring up the hardware.  This is expected to enable access
1457          * to the linear memory region, and allow access to the memory
1458          * mapped registers.  Also, mem_ctl1 and mem_ctl2 must be
1459          * initialised.
1460          */
1461         cyber2000fb_writeb(0x18, 0x46e8, cfb);
1462         cyber2000fb_writeb(0x01, 0x102, cfb);
1463         cyber2000fb_writeb(0x08, 0x46e8, cfb);
1464         cyber2000fb_writeb(EXT_BIU_MISC, 0x3ce, cfb);
1465         cyber2000fb_writeb(EXT_BIU_MISC_LIN_ENABLE, 0x3cf, cfb);
1466
1467         cfb->mclk_mult = 0xdb;
1468         cfb->mclk_div  = 0x54;
1469
1470         err = cyberpro_common_probe(cfb);
1471         if (err)
1472                 goto failed;
1473
1474         if (int_cfb_info == NULL)
1475                 int_cfb_info = cfb;
1476
1477         return 0;
1478
1479 failed:
1480         iounmap(cfb->region);
1481 failed_ioremap:
1482         cyberpro_free_fb_info(cfb);
1483 failed_release:
1484         release_mem_region(FB_START,FB_SIZE);
1485
1486         return err;
1487 }
1488 #endif /* CONFIG_ARCH_SHARK */
1489
1490 /*
1491  * PCI specific support.
1492  */
1493 #ifdef CONFIG_PCI
1494 /*
1495  * We need to wake up the CyberPro, and make sure its in linear memory
1496  * mode.  Unfortunately, this is specific to the platform and card that
1497  * we are running on.
1498  *
1499  * On x86 and ARM, should we be initialising the CyberPro first via the
1500  * IO registers, and then the MMIO registers to catch all cases?  Can we
1501  * end up in the situation where the chip is in MMIO mode, but not awake
1502  * on an x86 system?
1503  */
1504 static int cyberpro_pci_enable_mmio(struct cfb_info *cfb)
1505 {
1506         unsigned char val;
1507
1508 #if defined(__sparc_v9__)
1509 #error "You lose, consult DaveM."
1510 #elif defined(__sparc__)
1511         /*
1512          * SPARC does not have an "outb" instruction, so we generate
1513          * I/O cycles storing into a reserved memory space at
1514          * physical address 0x3000000
1515          */
1516         unsigned char *iop;
1517
1518         iop = ioremap(0x3000000, 0x5000);
1519         if (iop == NULL) {
1520                 prom_printf("iga5000: cannot map I/O\n");
1521                 return -ENOMEM;
1522         }
1523
1524         writeb(0x18, iop + 0x46e8);
1525         writeb(0x01, iop + 0x102);
1526         writeb(0x08, iop + 0x46e8);
1527         writeb(EXT_BIU_MISC, iop + 0x3ce);
1528         writeb(EXT_BIU_MISC_LIN_ENABLE, iop + 0x3cf);
1529
1530         iounmap((void *)iop);
1531 #else
1532         /*
1533          * Most other machine types are "normal", so
1534          * we use the standard IO-based wakeup.
1535          */
1536         outb(0x18, 0x46e8);
1537         outb(0x01, 0x102);
1538         outb(0x08, 0x46e8);
1539         outb(EXT_BIU_MISC, 0x3ce);
1540         outb(EXT_BIU_MISC_LIN_ENABLE, 0x3cf);
1541 #endif
1542
1543         /*
1544          * Allow the CyberPro to accept PCI burst accesses
1545          */
1546         val = cyber2000_grphr(EXT_BUS_CTL, cfb);
1547         if (!(val & EXT_BUS_CTL_PCIBURST_WRITE)) {
1548                 printk(KERN_INFO "%s: enabling PCI bursts\n", cfb->fb.fix.id);
1549
1550                 val |= EXT_BUS_CTL_PCIBURST_WRITE;
1551
1552                 if (cfb->id == ID_CYBERPRO_5000)
1553                         val |= EXT_BUS_CTL_PCIBURST_READ;
1554
1555                 cyber2000_grphw(EXT_BUS_CTL, val, cfb);
1556         }
1557
1558         return 0;
1559 }
1560
1561 static int __devinit
1562 cyberpro_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
1563 {
1564         struct cfb_info *cfb;
1565         char name[16];
1566         int err;
1567
1568         sprintf(name, "CyberPro%4X", id->device);
1569
1570         err = pci_enable_device(dev);
1571         if (err)
1572                 return err;
1573
1574         err = pci_request_regions(dev, name);
1575         if (err)
1576                 return err;
1577
1578         err = -ENOMEM;
1579         cfb = cyberpro_alloc_fb_info(id->driver_data, name);
1580         if (!cfb)
1581                 goto failed_release;
1582
1583         cfb->dev = dev;
1584         cfb->region = ioremap(pci_resource_start(dev, 0),
1585                               pci_resource_len(dev, 0));
1586         if (!cfb->region)
1587                 goto failed_ioremap;
1588
1589         cfb->regs = cfb->region + MMIO_OFFSET;
1590         cfb->fb.fix.mmio_start = pci_resource_start(dev, 0) + MMIO_OFFSET;
1591         cfb->fb.fix.smem_start = pci_resource_start(dev, 0);
1592
1593         /*
1594          * Bring up the hardware.  This is expected to enable access
1595          * to the linear memory region, and allow access to the memory
1596          * mapped registers.  Also, mem_ctl1 and mem_ctl2 must be
1597          * initialised.
1598          */
1599         err = cyberpro_pci_enable_mmio(cfb);
1600         if (err)
1601                 goto failed;
1602
1603         /*
1604          * Use MCLK from BIOS. FIXME: what about hotplug?
1605          */
1606         cfb->mclk_mult = cyber2000_grphr(EXT_MCLK_MULT, cfb);
1607         cfb->mclk_div  = cyber2000_grphr(EXT_MCLK_DIV, cfb);
1608
1609 #ifdef __arm__
1610         /*
1611          * MCLK on the NetWinder and the Shark is fixed at 75MHz
1612          */
1613         if (machine_is_netwinder()) {
1614                 cfb->mclk_mult = 0xdb;
1615                 cfb->mclk_div  = 0x54;
1616         }
1617 #endif
1618
1619         err = cyberpro_common_probe(cfb);
1620         if (err)
1621                 goto failed;
1622
1623         /*
1624          * Our driver data
1625          */
1626         pci_set_drvdata(dev, cfb);
1627         if (int_cfb_info == NULL)
1628                 int_cfb_info = cfb;
1629
1630         return 0;
1631
1632 failed:
1633         iounmap(cfb->region);
1634 failed_ioremap:
1635         cyberpro_free_fb_info(cfb);
1636 failed_release:
1637         pci_release_regions(dev);
1638
1639         return err;
1640 }
1641
1642 static void __devexit cyberpro_pci_remove(struct pci_dev *dev)
1643 {
1644         struct cfb_info *cfb = pci_get_drvdata(dev);
1645
1646         if (cfb) {
1647                 /*
1648                  * If unregister_framebuffer fails, then
1649                  * we will be leaving hooks that could cause
1650                  * oopsen laying around.
1651                  */
1652                 if (unregister_framebuffer(&cfb->fb))
1653                         printk(KERN_WARNING "%s: danger Will Robinson, "
1654                                 "danger danger!  Oopsen imminent!\n",
1655                                 cfb->fb.fix.id);
1656                 iounmap(cfb->region);
1657                 cyberpro_free_fb_info(cfb);
1658
1659                 /*
1660                  * Ensure that the driver data is no longer
1661                  * valid.
1662                  */
1663                 pci_set_drvdata(dev, NULL);
1664                 if (cfb == int_cfb_info)
1665                         int_cfb_info = NULL;
1666
1667                 pci_release_regions(dev);
1668         }
1669 }
1670
1671 static int cyberpro_pci_suspend(struct pci_dev *dev, pm_message_t state)
1672 {
1673         return 0;
1674 }
1675
1676 /*
1677  * Re-initialise the CyberPro hardware
1678  */
1679 static int cyberpro_pci_resume(struct pci_dev *dev)
1680 {
1681         struct cfb_info *cfb = pci_get_drvdata(dev);
1682
1683         if (cfb) {
1684                 cyberpro_pci_enable_mmio(cfb);
1685                 cyberpro_common_resume(cfb);
1686         }
1687
1688         return 0;
1689 }
1690
1691 static struct pci_device_id cyberpro_pci_table[] = {
1692 //      Not yet
1693 //      { PCI_VENDOR_ID_INTERG, PCI_DEVICE_ID_INTERG_1682,
1694 //              PCI_ANY_ID, PCI_ANY_ID, 0, 0, ID_IGA_1682 },
1695         { PCI_VENDOR_ID_INTERG, PCI_DEVICE_ID_INTERG_2000,
1696                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, ID_CYBERPRO_2000 },
1697         { PCI_VENDOR_ID_INTERG, PCI_DEVICE_ID_INTERG_2010,
1698                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, ID_CYBERPRO_2010 },
1699         { PCI_VENDOR_ID_INTERG, PCI_DEVICE_ID_INTERG_5000,
1700                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, ID_CYBERPRO_5000 },
1701         { 0, }
1702 };
1703
1704 MODULE_DEVICE_TABLE(pci,cyberpro_pci_table);
1705
1706 static struct pci_driver cyberpro_driver = {
1707         .name           = "CyberPro",
1708         .probe          = cyberpro_pci_probe,
1709         .remove         = __devexit_p(cyberpro_pci_remove),
1710         .suspend        = cyberpro_pci_suspend,
1711         .resume         = cyberpro_pci_resume,
1712         .id_table       = cyberpro_pci_table
1713 };
1714 #endif
1715
1716 /*
1717  * I don't think we can use the "module_init" stuff here because
1718  * the fbcon stuff may not be initialised yet.  Hence the #ifdef
1719  * around module_init.
1720  *
1721  * Tony: "module_init" is now required
1722  */
1723 static int __init cyber2000fb_init(void)
1724 {
1725         int ret = -1, err;
1726
1727 #ifndef MODULE
1728         char *option = NULL;
1729
1730         if (fb_get_options("cyber2000fb", &option))
1731                 return -ENODEV;
1732         cyber2000fb_setup(option);
1733 #endif
1734
1735 #ifdef CONFIG_ARCH_SHARK
1736         err = cyberpro_vl_probe();
1737         if (!err) {
1738                 ret = 0;
1739                 __module_get(THIS_MODULE);
1740         }
1741 #endif
1742 #ifdef CONFIG_PCI
1743         err = pci_register_driver(&cyberpro_driver);
1744         if (!err)
1745                 ret = 0;
1746 #endif
1747
1748         return ret ? err : 0;
1749 }
1750
1751 static void __exit cyberpro_exit(void)
1752 {
1753         pci_unregister_driver(&cyberpro_driver);
1754 }
1755
1756 module_init(cyber2000fb_init);
1757 module_exit(cyberpro_exit);
1758
1759 MODULE_AUTHOR("Russell King");
1760 MODULE_DESCRIPTION("CyberPro 2000, 2010 and 5000 framebuffer driver");
1761 MODULE_LICENSE("GPL");