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V4L/DVB (6715): ivtv: Remove unnecessary register update
[linux-2.6/verdex.git] / drivers / video / neofb.c
blob4b6a99b5be0d7ba5c720bf5f4e09d43da93897ac
1 /*
2 * linux/drivers/video/neofb.c -- NeoMagic Framebuffer Driver
3 *
4 * Copyright (c) 2001-2002 Denis Oliver Kropp <dok@directfb.org>
5 *
6 *
7 * Card specific code is based on XFree86's neomagic driver.
8 * Framebuffer framework code is based on code of cyber2000fb.
9 *
10 * This file is subject to the terms and conditions of the GNU General
11 * Public License. See the file COPYING in the main directory of this
12 * archive for more details.
13 *
14 *
15 * 0.4.1
16 * - Cosmetic changes (dok)
17 *
18 * 0.4
19 * - Toshiba Libretto support, allow modes larger than LCD size if
20 * LCD is disabled, keep BIOS settings if internal/external display
21 * haven't been enabled explicitly
22 * (Thomas J. Moore <dark@mama.indstate.edu>)
23 *
24 * 0.3.3
25 * - Porting over to new fbdev api. (jsimmons)
26 *
27 * 0.3.2
28 * - got rid of all floating point (dok)
29 *
30 * 0.3.1
31 * - added module license (dok)
32 *
33 * 0.3
34 * - hardware accelerated clear and move for 2200 and above (dok)
35 * - maximum allowed dotclock is handled now (dok)
36 *
37 * 0.2.1
38 * - correct panning after X usage (dok)
39 * - added module and kernel parameters (dok)
40 * - no stretching if external display is enabled (dok)
41 *
42 * 0.2
43 * - initial version (dok)
44 *
45 *
46 * TODO
47 * - ioctl for internal/external switching
48 * - blanking
49 * - 32bit depth support, maybe impossible
50 * - disable pan-on-sync, need specs
51 *
52 * BUGS
53 * - white margin on bootup like with tdfxfb (colormap problem?)
54 *
55 */
56
57 #include <linux/module.h>
58 #include <linux/kernel.h>
59 #include <linux/errno.h>
60 #include <linux/string.h>
61 #include <linux/mm.h>
62 #include <linux/slab.h>
63 #include <linux/delay.h>
64 #include <linux/fb.h>
65 #include <linux/pci.h>
66 #include <linux/init.h>
67 #ifdef CONFIG_TOSHIBA
68 #include <linux/toshiba.h>
69 #endif
70
71 #include <asm/io.h>
72 #include <asm/irq.h>
73 #include <asm/pgtable.h>
74 #include <asm/system.h>
75
76 #ifdef CONFIG_MTRR
77 #include <asm/mtrr.h>
78 #endif
79
80 #include <video/vga.h>
81 #include <video/neomagic.h>
82
83 #define NEOFB_VERSION "0.4.2"
84
85 /* --------------------------------------------------------------------- */
86
87 static int internal;
88 static int external;
89 static int libretto;
90 static int nostretch;
91 static int nopciburst;
92 static char *mode_option __devinitdata = NULL;
93
94 #ifdef MODULE
95
96 MODULE_AUTHOR("(c) 2001-2002 Denis Oliver Kropp <dok@convergence.de>");
97 MODULE_LICENSE("GPL");
98 MODULE_DESCRIPTION("FBDev driver for NeoMagic PCI Chips");
99 module_param(internal, bool, 0);
100 MODULE_PARM_DESC(internal, "Enable output on internal LCD Display.");
101 module_param(external, bool, 0);
102 MODULE_PARM_DESC(external, "Enable output on external CRT.");
103 module_param(libretto, bool, 0);
104 MODULE_PARM_DESC(libretto, "Force Libretto 100/110 800x480 LCD.");
105 module_param(nostretch, bool, 0);
106 MODULE_PARM_DESC(nostretch,
107 "Disable stretching of modes smaller than LCD.");
108 module_param(nopciburst, bool, 0);
109 MODULE_PARM_DESC(nopciburst, "Disable PCI burst mode.");
110 module_param(mode_option, charp, 0);
111 MODULE_PARM_DESC(mode_option, "Preferred video mode ('640x480-8@60', etc)");
112
113 #endif
114
115
116 /* --------------------------------------------------------------------- */
117
118 static biosMode bios8[] = {
119 {320, 240, 0x40},
120 {300, 400, 0x42},
121 {640, 400, 0x20},
122 {640, 480, 0x21},
123 {800, 600, 0x23},
124 {1024, 768, 0x25},
125 };
126
127 static biosMode bios16[] = {
128 {320, 200, 0x2e},
129 {320, 240, 0x41},
130 {300, 400, 0x43},
131 {640, 480, 0x31},
132 {800, 600, 0x34},
133 {1024, 768, 0x37},
134 };
135
136 static biosMode bios24[] = {
137 {640, 480, 0x32},
138 {800, 600, 0x35},
139 {1024, 768, 0x38}
140 };
141
142 #ifdef NO_32BIT_SUPPORT_YET
143 /* FIXME: guessed values, wrong */
144 static biosMode bios32[] = {
145 {640, 480, 0x33},
146 {800, 600, 0x36},
147 {1024, 768, 0x39}
148 };
149 #endif
150
151 static inline void write_le32(int regindex, u32 val, const struct neofb_par *par)
152 {
153 writel(val, par->neo2200 + par->cursorOff + regindex);
154 }
155
156 static int neoFindMode(int xres, int yres, int depth)
157 {
158 int xres_s;
159 int i, size;
160 biosMode *mode;
161
162 switch (depth) {
163 case 8:
164 size = ARRAY_SIZE(bios8);
165 mode = bios8;
166 break;
167 case 16:
168 size = ARRAY_SIZE(bios16);
169 mode = bios16;
170 break;
171 case 24:
172 size = ARRAY_SIZE(bios24);
173 mode = bios24;
174 break;
175 #ifdef NO_32BIT_SUPPORT_YET
176 case 32:
177 size = ARRAY_SIZE(bios32);
178 mode = bios32;
179 break;
180 #endif
181 default:
182 return 0;
183 }
184
185 for (i = 0; i < size; i++) {
186 if (xres <= mode[i].x_res) {
187 xres_s = mode[i].x_res;
188 for (; i < size; i++) {
189 if (mode[i].x_res != xres_s)
190 return mode[i - 1].mode;
191 if (yres <= mode[i].y_res)
192 return mode[i].mode;
193 }
194 }
195 }
196 return mode[size - 1].mode;
197 }
198
199 /*
200 * neoCalcVCLK --
201 *
202 * Determine the closest clock frequency to the one requested.
203 */
204 #define REF_FREQ 0xe517 /* 14.31818 in 20.12 fixed point */
205 #define MAX_N 127
206 #define MAX_D 31
207 #define MAX_F 1
208
209 static void neoCalcVCLK(const struct fb_info *info,
210 struct neofb_par *par, long freq)
211 {
212 int n, d, f;
213 int n_best = 0, d_best = 0, f_best = 0;
214 long f_best_diff = (0x7ffff << 12); /* 20.12 */
215 long f_target = (freq << 12) / 1000; /* 20.12 */
216
217 for (f = 0; f <= MAX_F; f++)
218 for (n = 0; n <= MAX_N; n++)
219 for (d = 0; d <= MAX_D; d++) {
220 long f_out; /* 20.12 */
221 long f_diff; /* 20.12 */
222
223 f_out =
224 ((((n + 1) << 12) / ((d +
225 1) *
226 (1 << f))) >> 12)
227 * REF_FREQ;
228 f_diff = abs(f_out - f_target);
229 if (f_diff < f_best_diff) {
230 f_best_diff = f_diff;
231 n_best = n;
232 d_best = d;
233 f_best = f;
234 }
235 }
236
237 if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
238 info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
239 info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
240 info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
241 /* NOT_DONE: We are trying the full range of the 2200 clock.
242 We should be able to try n up to 2047 */
243 par->VCLK3NumeratorLow = n_best;
244 par->VCLK3NumeratorHigh = (f_best << 7);
245 } else
246 par->VCLK3NumeratorLow = n_best | (f_best << 7);
247
248 par->VCLK3Denominator = d_best;
249
250 #ifdef NEOFB_DEBUG
251 printk("neoVCLK: f:%d NumLow=%d NumHi=%d Den=%d Df=%d\n",
252 f_target >> 12,
253 par->VCLK3NumeratorLow,
254 par->VCLK3NumeratorHigh,
255 par->VCLK3Denominator, f_best_diff >> 12);
256 #endif
257 }
258
259 /*
260 * vgaHWInit --
261 * Handle the initialization, etc. of a screen.
262 * Return FALSE on failure.
263 */
264
265 static int vgaHWInit(const struct fb_var_screeninfo *var,
266 const struct fb_info *info,
267 struct neofb_par *par, struct xtimings *timings)
268 {
269 par->MiscOutReg = 0x23;
270
271 if (!(timings->sync & FB_SYNC_HOR_HIGH_ACT))
272 par->MiscOutReg |= 0x40;
273
274 if (!(timings->sync & FB_SYNC_VERT_HIGH_ACT))
275 par->MiscOutReg |= 0x80;
276
277 /*
278 * Time Sequencer
279 */
280 par->Sequencer[0] = 0x00;
281 par->Sequencer[1] = 0x01;
282 par->Sequencer[2] = 0x0F;
283 par->Sequencer[3] = 0x00; /* Font select */
284 par->Sequencer[4] = 0x0E; /* Misc */
285
286 /*
287 * CRTC Controller
288 */
289 par->CRTC[0] = (timings->HTotal >> 3) - 5;
290 par->CRTC[1] = (timings->HDisplay >> 3) - 1;
291 par->CRTC[2] = (timings->HDisplay >> 3) - 1;
292 par->CRTC[3] = (((timings->HTotal >> 3) - 1) & 0x1F) | 0x80;
293 par->CRTC[4] = (timings->HSyncStart >> 3);
294 par->CRTC[5] = ((((timings->HTotal >> 3) - 1) & 0x20) << 2)
295 | (((timings->HSyncEnd >> 3)) & 0x1F);
296 par->CRTC[6] = (timings->VTotal - 2) & 0xFF;
297 par->CRTC[7] = (((timings->VTotal - 2) & 0x100) >> 8)
298 | (((timings->VDisplay - 1) & 0x100) >> 7)
299 | ((timings->VSyncStart & 0x100) >> 6)
300 | (((timings->VDisplay - 1) & 0x100) >> 5)
301 | 0x10 | (((timings->VTotal - 2) & 0x200) >> 4)
302 | (((timings->VDisplay - 1) & 0x200) >> 3)
303 | ((timings->VSyncStart & 0x200) >> 2);
304 par->CRTC[8] = 0x00;
305 par->CRTC[9] = (((timings->VDisplay - 1) & 0x200) >> 4) | 0x40;
306
307 if (timings->dblscan)
308 par->CRTC[9] |= 0x80;
309
310 par->CRTC[10] = 0x00;
311 par->CRTC[11] = 0x00;
312 par->CRTC[12] = 0x00;
313 par->CRTC[13] = 0x00;
314 par->CRTC[14] = 0x00;
315 par->CRTC[15] = 0x00;
316 par->CRTC[16] = timings->VSyncStart & 0xFF;
317 par->CRTC[17] = (timings->VSyncEnd & 0x0F) | 0x20;
318 par->CRTC[18] = (timings->VDisplay - 1) & 0xFF;
319 par->CRTC[19] = var->xres_virtual >> 4;
320 par->CRTC[20] = 0x00;
321 par->CRTC[21] = (timings->VDisplay - 1) & 0xFF;
322 par->CRTC[22] = (timings->VTotal - 1) & 0xFF;
323 par->CRTC[23] = 0xC3;
324 par->CRTC[24] = 0xFF;
325
326 /*
327 * are these unnecessary?
328 * vgaHWHBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
329 * vgaHWVBlankKGA(mode, regp, 0, KGA_FIX_OVERSCAN | KGA_ENABLE_ON_ZERO);
330 */
331
332 /*
333 * Graphics Display Controller
334 */
335 par->Graphics[0] = 0x00;
336 par->Graphics[1] = 0x00;
337 par->Graphics[2] = 0x00;
338 par->Graphics[3] = 0x00;
339 par->Graphics[4] = 0x00;
340 par->Graphics[5] = 0x40;
341 par->Graphics[6] = 0x05; /* only map 64k VGA memory !!!! */
342 par->Graphics[7] = 0x0F;
343 par->Graphics[8] = 0xFF;
344
345
346 par->Attribute[0] = 0x00; /* standard colormap translation */
347 par->Attribute[1] = 0x01;
348 par->Attribute[2] = 0x02;
349 par->Attribute[3] = 0x03;
350 par->Attribute[4] = 0x04;
351 par->Attribute[5] = 0x05;
352 par->Attribute[6] = 0x06;
353 par->Attribute[7] = 0x07;
354 par->Attribute[8] = 0x08;
355 par->Attribute[9] = 0x09;
356 par->Attribute[10] = 0x0A;
357 par->Attribute[11] = 0x0B;
358 par->Attribute[12] = 0x0C;
359 par->Attribute[13] = 0x0D;
360 par->Attribute[14] = 0x0E;
361 par->Attribute[15] = 0x0F;
362 par->Attribute[16] = 0x41;
363 par->Attribute[17] = 0xFF;
364 par->Attribute[18] = 0x0F;
365 par->Attribute[19] = 0x00;
366 par->Attribute[20] = 0x00;
367 return 0;
368 }
369
370 static void vgaHWLock(struct vgastate *state)
371 {
372 /* Protect CRTC[0-7] */
373 vga_wcrt(state->vgabase, 0x11, vga_rcrt(state->vgabase, 0x11) | 0x80);
374 }
375
376 static void vgaHWUnlock(void)
377 {
378 /* Unprotect CRTC[0-7] */
379 vga_wcrt(NULL, 0x11, vga_rcrt(NULL, 0x11) & ~0x80);
380 }
381
382 static void neoLock(struct vgastate *state)
383 {
384 vga_wgfx(state->vgabase, 0x09, 0x00);
385 vgaHWLock(state);
386 }
387
388 static void neoUnlock(void)
389 {
390 vgaHWUnlock();
391 vga_wgfx(NULL, 0x09, 0x26);
392 }
393
394 /*
395 * VGA Palette management
396 */
397 static int paletteEnabled = 0;
398
399 static inline void VGAenablePalette(void)
400 {
401 vga_r(NULL, VGA_IS1_RC);
402 vga_w(NULL, VGA_ATT_W, 0x00);
403 paletteEnabled = 1;
404 }
405
406 static inline void VGAdisablePalette(void)
407 {
408 vga_r(NULL, VGA_IS1_RC);
409 vga_w(NULL, VGA_ATT_W, 0x20);
410 paletteEnabled = 0;
411 }
412
413 static inline void VGAwATTR(u8 index, u8 value)
414 {
415 if (paletteEnabled)
416 index &= ~0x20;
417 else
418 index |= 0x20;
419
420 vga_r(NULL, VGA_IS1_RC);
421 vga_wattr(NULL, index, value);
422 }
423
424 static void vgaHWProtect(int on)
425 {
426 unsigned char tmp;
427
428 if (on) {
429 /*
430 * Turn off screen and disable sequencer.
431 */
432 tmp = vga_rseq(NULL, 0x01);
433 vga_wseq(NULL, 0x00, 0x01); /* Synchronous Reset */
434 vga_wseq(NULL, 0x01, tmp | 0x20); /* disable the display */
435
436 VGAenablePalette();
437 } else {
438 /*
439 * Reenable sequencer, then turn on screen.
440 */
441 tmp = vga_rseq(NULL, 0x01);
442 vga_wseq(NULL, 0x01, tmp & ~0x20); /* reenable display */
443 vga_wseq(NULL, 0x00, 0x03); /* clear synchronousreset */
444
445 VGAdisablePalette();
446 }
447 }
448
449 static void vgaHWRestore(const struct fb_info *info,
450 const struct neofb_par *par)
451 {
452 int i;
453
454 vga_w(NULL, VGA_MIS_W, par->MiscOutReg);
455
456 for (i = 1; i < 5; i++)
457 vga_wseq(NULL, i, par->Sequencer[i]);
458
459 /* Ensure CRTC registers 0-7 are unlocked by clearing bit 7 or CRTC[17] */
460 vga_wcrt(NULL, 17, par->CRTC[17] & ~0x80);
461
462 for (i = 0; i < 25; i++)
463 vga_wcrt(NULL, i, par->CRTC[i]);
464
465 for (i = 0; i < 9; i++)
466 vga_wgfx(NULL, i, par->Graphics[i]);
467
468 VGAenablePalette();
469
470 for (i = 0; i < 21; i++)
471 VGAwATTR(i, par->Attribute[i]);
472
473 VGAdisablePalette();
474 }
475
476
477 /* -------------------- Hardware specific routines ------------------------- */
478
479 /*
480 * Hardware Acceleration for Neo2200+
481 */
482 static inline int neo2200_sync(struct fb_info *info)
483 {
484 struct neofb_par *par = info->par;
485
486 while (readl(&par->neo2200->bltStat) & 1);
487 return 0;
488 }
489
490 static inline void neo2200_wait_fifo(struct fb_info *info,
491 int requested_fifo_space)
492 {
493 // ndev->neo.waitfifo_calls++;
494 // ndev->neo.waitfifo_sum += requested_fifo_space;
495
496 /* FIXME: does not work
497 if (neo_fifo_space < requested_fifo_space)
498 {
499 neo_fifo_waitcycles++;
500
501 while (1)
502 {
503 neo_fifo_space = (neo2200->bltStat >> 8);
504 if (neo_fifo_space >= requested_fifo_space)
505 break;
506 }
507 }
508 else
509 {
510 neo_fifo_cache_hits++;
511 }
512
513 neo_fifo_space -= requested_fifo_space;
514 */
515
516 neo2200_sync(info);
517 }
518
519 static inline void neo2200_accel_init(struct fb_info *info,
520 struct fb_var_screeninfo *var)
521 {
522 struct neofb_par *par = info->par;
523 Neo2200 __iomem *neo2200 = par->neo2200;
524 u32 bltMod, pitch;
525
526 neo2200_sync(info);
527
528 switch (var->bits_per_pixel) {
529 case 8:
530 bltMod = NEO_MODE1_DEPTH8;
531 pitch = var->xres_virtual;
532 break;
533 case 15:
534 case 16:
535 bltMod = NEO_MODE1_DEPTH16;
536 pitch = var->xres_virtual * 2;
537 break;
538 case 24:
539 bltMod = NEO_MODE1_DEPTH24;
540 pitch = var->xres_virtual * 3;
541 break;
542 default:
543 printk(KERN_ERR
544 "neofb: neo2200_accel_init: unexpected bits per pixel!\n");
545 return;
546 }
547
548 writel(bltMod << 16, &neo2200->bltStat);
549 writel((pitch << 16) | pitch, &neo2200->pitch);
550 }
551
552 /* --------------------------------------------------------------------- */
553
554 static int
555 neofb_open(struct fb_info *info, int user)
556 {
557 struct neofb_par *par = info->par;
558
559 mutex_lock(&par->open_lock);
560 if (!par->ref_count) {
561 memset(&par->state, 0, sizeof(struct vgastate));
562 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS;
563 save_vga(&par->state);
564 }
565 par->ref_count++;
566 mutex_unlock(&par->open_lock);
567
568 return 0;
569 }
570
571 static int
572 neofb_release(struct fb_info *info, int user)
573 {
574 struct neofb_par *par = info->par;
575
576 mutex_lock(&par->open_lock);
577 if (!par->ref_count) {
578 mutex_unlock(&par->open_lock);
579 return -EINVAL;
580 }
581 if (par->ref_count == 1) {
582 restore_vga(&par->state);
583 }
584 par->ref_count--;
585 mutex_unlock(&par->open_lock);
586
587 return 0;
588 }
589
590 static int
591 neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
592 {
593 struct neofb_par *par = info->par;
594 unsigned int pixclock = var->pixclock;
595 struct xtimings timings;
596 int memlen, vramlen;
597 int mode_ok = 0;
598
599 DBG("neofb_check_var");
600
601 if (!pixclock)
602 pixclock = 10000; /* 10ns = 100MHz */
603 timings.pixclock = 1000000000 / pixclock;
604 if (timings.pixclock < 1)
605 timings.pixclock = 1;
606
607 if (timings.pixclock > par->maxClock)
608 return -EINVAL;
609
610 timings.dblscan = var->vmode & FB_VMODE_DOUBLE;
611 timings.interlaced = var->vmode & FB_VMODE_INTERLACED;
612 timings.HDisplay = var->xres;
613 timings.HSyncStart = timings.HDisplay + var->right_margin;
614 timings.HSyncEnd = timings.HSyncStart + var->hsync_len;
615 timings.HTotal = timings.HSyncEnd + var->left_margin;
616 timings.VDisplay = var->yres;
617 timings.VSyncStart = timings.VDisplay + var->lower_margin;
618 timings.VSyncEnd = timings.VSyncStart + var->vsync_len;
619 timings.VTotal = timings.VSyncEnd + var->upper_margin;
620 timings.sync = var->sync;
621
622 /* Is the mode larger than the LCD panel? */
623 if (par->internal_display &&
624 ((var->xres > par->NeoPanelWidth) ||
625 (var->yres > par->NeoPanelHeight))) {
626 printk(KERN_INFO
627 "Mode (%dx%d) larger than the LCD panel (%dx%d)\n",
628 var->xres, var->yres, par->NeoPanelWidth,
629 par->NeoPanelHeight);
630 return -EINVAL;
631 }
632
633 /* Is the mode one of the acceptable sizes? */
634 if (!par->internal_display)
635 mode_ok = 1;
636 else {
637 switch (var->xres) {
638 case 1280:
639 if (var->yres == 1024)
640 mode_ok = 1;
641 break;
642 case 1024:
643 if (var->yres == 768)
644 mode_ok = 1;
645 break;
646 case 800:
647 if (var->yres == (par->libretto ? 480 : 600))
648 mode_ok = 1;
649 break;
650 case 640:
651 if (var->yres == 480)
652 mode_ok = 1;
653 break;
654 }
655 }
656
657 if (!mode_ok) {
658 printk(KERN_INFO
659 "Mode (%dx%d) won't display properly on LCD\n",
660 var->xres, var->yres);
661 return -EINVAL;
662 }
663
664 var->red.msb_right = 0;
665 var->green.msb_right = 0;
666 var->blue.msb_right = 0;
667 var->transp.msb_right = 0;
668
669 switch (var->bits_per_pixel) {
670 case 8: /* PSEUDOCOLOUR, 256 */
671 var->transp.offset = 0;
672 var->transp.length = 0;
673 var->red.offset = 0;
674 var->red.length = 8;
675 var->green.offset = 0;
676 var->green.length = 8;
677 var->blue.offset = 0;
678 var->blue.length = 8;
679 break;
680
681 case 16: /* DIRECTCOLOUR, 64k */
682 var->transp.offset = 0;
683 var->transp.length = 0;
684 var->red.offset = 11;
685 var->red.length = 5;
686 var->green.offset = 5;
687 var->green.length = 6;
688 var->blue.offset = 0;
689 var->blue.length = 5;
690 break;
691
692 case 24: /* TRUECOLOUR, 16m */
693 var->transp.offset = 0;
694 var->transp.length = 0;
695 var->red.offset = 16;
696 var->red.length = 8;
697 var->green.offset = 8;
698 var->green.length = 8;
699 var->blue.offset = 0;
700 var->blue.length = 8;
701 break;
702
703 #ifdef NO_32BIT_SUPPORT_YET
704 case 32: /* TRUECOLOUR, 16m */
705 var->transp.offset = 24;
706 var->transp.length = 8;
707 var->red.offset = 16;
708 var->red.length = 8;
709 var->green.offset = 8;
710 var->green.length = 8;
711 var->blue.offset = 0;
712 var->blue.length = 8;
713 break;
714 #endif
715 default:
716 printk(KERN_WARNING "neofb: no support for %dbpp\n",
717 var->bits_per_pixel);
718 return -EINVAL;
719 }
720
721 vramlen = info->fix.smem_len;
722 if (vramlen > 4 * 1024 * 1024)
723 vramlen = 4 * 1024 * 1024;
724
725 if (var->yres_virtual < var->yres)
726 var->yres_virtual = var->yres;
727 if (var->xres_virtual < var->xres)
728 var->xres_virtual = var->xres;
729
730 memlen = var->xres_virtual * var->bits_per_pixel * var->yres_virtual >> 3;
731
732 if (memlen > vramlen) {
733 var->yres_virtual = vramlen * 8 / (var->xres_virtual *
734 var->bits_per_pixel);
735 memlen = var->xres_virtual * var->bits_per_pixel *
736 var->yres_virtual / 8;
737 }
738
739 /* we must round yres/xres down, we already rounded y/xres_virtual up
740 if it was possible. We should return -EINVAL, but I disagree */
741 if (var->yres_virtual < var->yres)
742 var->yres = var->yres_virtual;
743 if (var->xres_virtual < var->xres)
744 var->xres = var->xres_virtual;
745 if (var->xoffset + var->xres > var->xres_virtual)
746 var->xoffset = var->xres_virtual - var->xres;
747 if (var->yoffset + var->yres > var->yres_virtual)
748 var->yoffset = var->yres_virtual - var->yres;
749
750 var->nonstd = 0;
751 var->height = -1;
752 var->width = -1;
753
754 if (var->bits_per_pixel >= 24 || !par->neo2200)
755 var->accel_flags &= ~FB_ACCELF_TEXT;
756 return 0;
757 }
758
759 static int neofb_set_par(struct fb_info *info)
760 {
761 struct neofb_par *par = info->par;
762 struct xtimings timings;
763 unsigned char temp;
764 int i, clock_hi = 0;
765 int lcd_stretch;
766 int hoffset, voffset;
767
768 DBG("neofb_set_par");
769
770 neoUnlock();
771
772 vgaHWProtect(1); /* Blank the screen */
773
774 timings.dblscan = info->var.vmode & FB_VMODE_DOUBLE;
775 timings.interlaced = info->var.vmode & FB_VMODE_INTERLACED;
776 timings.HDisplay = info->var.xres;
777 timings.HSyncStart = timings.HDisplay + info->var.right_margin;
778 timings.HSyncEnd = timings.HSyncStart + info->var.hsync_len;
779 timings.HTotal = timings.HSyncEnd + info->var.left_margin;
780 timings.VDisplay = info->var.yres;
781 timings.VSyncStart = timings.VDisplay + info->var.lower_margin;
782 timings.VSyncEnd = timings.VSyncStart + info->var.vsync_len;
783 timings.VTotal = timings.VSyncEnd + info->var.upper_margin;
784 timings.sync = info->var.sync;
785 timings.pixclock = PICOS2KHZ(info->var.pixclock);
786
787 if (timings.pixclock < 1)
788 timings.pixclock = 1;
789
790 /*
791 * This will allocate the datastructure and initialize all of the
792 * generic VGA registers.
793 */
794
795 if (vgaHWInit(&info->var, info, par, &timings))
796 return -EINVAL;
797
798 /*
799 * The default value assigned by vgaHW.c is 0x41, but this does
800 * not work for NeoMagic.
801 */
802 par->Attribute[16] = 0x01;
803
804 switch (info->var.bits_per_pixel) {
805 case 8:
806 par->CRTC[0x13] = info->var.xres_virtual >> 3;
807 par->ExtCRTOffset = info->var.xres_virtual >> 11;
808 par->ExtColorModeSelect = 0x11;
809 break;
810 case 16:
811 par->CRTC[0x13] = info->var.xres_virtual >> 2;
812 par->ExtCRTOffset = info->var.xres_virtual >> 10;
813 par->ExtColorModeSelect = 0x13;
814 break;
815 case 24:
816 par->CRTC[0x13] = (info->var.xres_virtual * 3) >> 3;
817 par->ExtCRTOffset = (info->var.xres_virtual * 3) >> 11;
818 par->ExtColorModeSelect = 0x14;
819 break;
820 #ifdef NO_32BIT_SUPPORT_YET
821 case 32: /* FIXME: guessed values */
822 par->CRTC[0x13] = info->var.xres_virtual >> 1;
823 par->ExtCRTOffset = info->var.xres_virtual >> 9;
824 par->ExtColorModeSelect = 0x15;
825 break;
826 #endif
827 default:
828 break;
829 }
830
831 par->ExtCRTDispAddr = 0x10;
832
833 /* Vertical Extension */
834 par->VerticalExt = (((timings.VTotal - 2) & 0x400) >> 10)
835 | (((timings.VDisplay - 1) & 0x400) >> 9)
836 | (((timings.VSyncStart) & 0x400) >> 8)
837 | (((timings.VSyncStart) & 0x400) >> 7);
838
839 /* Fast write bursts on unless disabled. */
840 if (par->pci_burst)
841 par->SysIfaceCntl1 = 0x30;
842 else
843 par->SysIfaceCntl1 = 0x00;
844
845 par->SysIfaceCntl2 = 0xc0; /* VESA Bios sets this to 0x80! */
846
847 /* Initialize: by default, we want display config register to be read */
848 par->PanelDispCntlRegRead = 1;
849
850 /* Enable any user specified display devices. */
851 par->PanelDispCntlReg1 = 0x00;
852 if (par->internal_display)
853 par->PanelDispCntlReg1 |= 0x02;
854 if (par->external_display)
855 par->PanelDispCntlReg1 |= 0x01;
856
857 /* If the user did not specify any display devices, then... */
858 if (par->PanelDispCntlReg1 == 0x00) {
859 /* Default to internal (i.e., LCD) only. */
860 par->PanelDispCntlReg1 = vga_rgfx(NULL, 0x20) & 0x03;
861 }
862
863 /* If we are using a fixed mode, then tell the chip we are. */
864 switch (info->var.xres) {
865 case 1280:
866 par->PanelDispCntlReg1 |= 0x60;
867 break;
868 case 1024:
869 par->PanelDispCntlReg1 |= 0x40;
870 break;
871 case 800:
872 par->PanelDispCntlReg1 |= 0x20;
873 break;
874 case 640:
875 default:
876 break;
877 }
878
879 /* Setup shadow register locking. */
880 switch (par->PanelDispCntlReg1 & 0x03) {
881 case 0x01: /* External CRT only mode: */
882 par->GeneralLockReg = 0x00;
883 /* We need to program the VCLK for external display only mode. */
884 par->ProgramVCLK = 1;
885 break;
886 case 0x02: /* Internal LCD only mode: */
887 case 0x03: /* Simultaneous internal/external (LCD/CRT) mode: */
888 par->GeneralLockReg = 0x01;
889 /* Don't program the VCLK when using the LCD. */
890 par->ProgramVCLK = 0;
891 break;
892 }
893
894 /*
895 * If the screen is to be stretched, turn on stretching for the
896 * various modes.
897 *
898 * OPTION_LCD_STRETCH means stretching should be turned off!
899 */
900 par->PanelDispCntlReg2 = 0x00;
901 par->PanelDispCntlReg3 = 0x00;
902
903 if (par->lcd_stretch && (par->PanelDispCntlReg1 == 0x02) && /* LCD only */
904 (info->var.xres != par->NeoPanelWidth)) {
905 switch (info->var.xres) {
906 case 320: /* Needs testing. KEM -- 24 May 98 */
907 case 400: /* Needs testing. KEM -- 24 May 98 */
908 case 640:
909 case 800:
910 case 1024:
911 lcd_stretch = 1;
912 par->PanelDispCntlReg2 |= 0xC6;
913 break;
914 default:
915 lcd_stretch = 0;
916 /* No stretching in these modes. */
917 }
918 } else
919 lcd_stretch = 0;
920
921 /*
922 * If the screen is to be centerd, turn on the centering for the
923 * various modes.
924 */
925 par->PanelVertCenterReg1 = 0x00;
926 par->PanelVertCenterReg2 = 0x00;
927 par->PanelVertCenterReg3 = 0x00;
928 par->PanelVertCenterReg4 = 0x00;
929 par->PanelVertCenterReg5 = 0x00;
930 par->PanelHorizCenterReg1 = 0x00;
931 par->PanelHorizCenterReg2 = 0x00;
932 par->PanelHorizCenterReg3 = 0x00;
933 par->PanelHorizCenterReg4 = 0x00;
934 par->PanelHorizCenterReg5 = 0x00;
935
936
937 if (par->PanelDispCntlReg1 & 0x02) {
938 if (info->var.xres == par->NeoPanelWidth) {
939 /*
940 * No centering required when the requested display width
941 * equals the panel width.
942 */
943 } else {
944 par->PanelDispCntlReg2 |= 0x01;
945 par->PanelDispCntlReg3 |= 0x10;
946
947 /* Calculate the horizontal and vertical offsets. */
948 if (!lcd_stretch) {
949 hoffset =
950 ((par->NeoPanelWidth -
951 info->var.xres) >> 4) - 1;
952 voffset =
953 ((par->NeoPanelHeight -
954 info->var.yres) >> 1) - 2;
955 } else {
956 /* Stretched modes cannot be centered. */
957 hoffset = 0;
958 voffset = 0;
959 }
960
961 switch (info->var.xres) {
962 case 320: /* Needs testing. KEM -- 24 May 98 */
963 par->PanelHorizCenterReg3 = hoffset;
964 par->PanelVertCenterReg2 = voffset;
965 break;
966 case 400: /* Needs testing. KEM -- 24 May 98 */
967 par->PanelHorizCenterReg4 = hoffset;
968 par->PanelVertCenterReg1 = voffset;
969 break;
970 case 640:
971 par->PanelHorizCenterReg1 = hoffset;
972 par->PanelVertCenterReg3 = voffset;
973 break;
974 case 800:
975 par->PanelHorizCenterReg2 = hoffset;
976 par->PanelVertCenterReg4 = voffset;
977 break;
978 case 1024:
979 par->PanelHorizCenterReg5 = hoffset;
980 par->PanelVertCenterReg5 = voffset;
981 break;
982 case 1280:
983 default:
984 /* No centering in these modes. */
985 break;
986 }
987 }
988 }
989
990 par->biosMode =
991 neoFindMode(info->var.xres, info->var.yres,
992 info->var.bits_per_pixel);
993
994 /*
995 * Calculate the VCLK that most closely matches the requested dot
996 * clock.
997 */
998 neoCalcVCLK(info, par, timings.pixclock);
999
1000 /* Since we program the clocks ourselves, always use VCLK3. */
1001 par->MiscOutReg |= 0x0C;
1002
1003 /* alread unlocked above */
1004 /* BOGUS vga_wgfx(NULL, 0x09, 0x26); */
1005
1006 /* don't know what this is, but it's 0 from bootup anyway */
1007 vga_wgfx(NULL, 0x15, 0x00);
1008
1009 /* was set to 0x01 by my bios in text and vesa modes */
1010 vga_wgfx(NULL, 0x0A, par->GeneralLockReg);
1011
1012 /*
1013 * The color mode needs to be set before calling vgaHWRestore
1014 * to ensure the DAC is initialized properly.
1015 *
1016 * NOTE: Make sure we don't change bits make sure we don't change
1017 * any reserved bits.
1018 */
1019 temp = vga_rgfx(NULL, 0x90);
1020 switch (info->fix.accel) {
1021 case FB_ACCEL_NEOMAGIC_NM2070:
1022 temp &= 0xF0; /* Save bits 7:4 */
1023 temp |= (par->ExtColorModeSelect & ~0xF0);
1024 break;
1025 case FB_ACCEL_NEOMAGIC_NM2090:
1026 case FB_ACCEL_NEOMAGIC_NM2093:
1027 case FB_ACCEL_NEOMAGIC_NM2097:
1028 case FB_ACCEL_NEOMAGIC_NM2160:
1029 case FB_ACCEL_NEOMAGIC_NM2200:
1030 case FB_ACCEL_NEOMAGIC_NM2230:
1031 case FB_ACCEL_NEOMAGIC_NM2360:
1032 case FB_ACCEL_NEOMAGIC_NM2380:
1033 temp &= 0x70; /* Save bits 6:4 */
1034 temp |= (par->ExtColorModeSelect & ~0x70);
1035 break;
1036 }
1037
1038 vga_wgfx(NULL, 0x90, temp);
1039
1040 /*
1041 * In some rare cases a lockup might occur if we don't delay
1042 * here. (Reported by Miles Lane)
1043 */
1044 //mdelay(200);
1045
1046 /*
1047 * Disable horizontal and vertical graphics and text expansions so
1048 * that vgaHWRestore works properly.
1049 */
1050 temp = vga_rgfx(NULL, 0x25);
1051 temp &= 0x39;
1052 vga_wgfx(NULL, 0x25, temp);
1053
1054 /*
1055 * Sleep for 200ms to make sure that the two operations above have
1056 * had time to take effect.
1057 */
1058 mdelay(200);
1059
1060 /*
1061 * This function handles restoring the generic VGA registers. */
1062 vgaHWRestore(info, par);
1063
1064 /* linear colormap for non palettized modes */
1065 switch (info->var.bits_per_pixel) {
1066 case 8:
1067 /* PseudoColor, 256 */
1068 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
1069 break;
1070 case 16:
1071 /* TrueColor, 64k */
1072 info->fix.visual = FB_VISUAL_TRUECOLOR;
1073
1074 for (i = 0; i < 64; i++) {
1075 outb(i, 0x3c8);
1076
1077 outb(i << 1, 0x3c9);
1078 outb(i, 0x3c9);
1079 outb(i << 1, 0x3c9);
1080 }
1081 break;
1082 case 24:
1083 #ifdef NO_32BIT_SUPPORT_YET
1084 case 32:
1085 #endif
1086 /* TrueColor, 16m */
1087 info->fix.visual = FB_VISUAL_TRUECOLOR;
1088
1089 for (i = 0; i < 256; i++) {
1090 outb(i, 0x3c8);
1091
1092 outb(i, 0x3c9);
1093 outb(i, 0x3c9);
1094 outb(i, 0x3c9);
1095 }
1096 break;
1097 }
1098
1099 vga_wgfx(NULL, 0x0E, par->ExtCRTDispAddr);
1100 vga_wgfx(NULL, 0x0F, par->ExtCRTOffset);
1101 temp = vga_rgfx(NULL, 0x10);
1102 temp &= 0x0F; /* Save bits 3:0 */
1103 temp |= (par->SysIfaceCntl1 & ~0x0F); /* VESA Bios sets bit 1! */
1104 vga_wgfx(NULL, 0x10, temp);
1105
1106 vga_wgfx(NULL, 0x11, par->SysIfaceCntl2);
1107 vga_wgfx(NULL, 0x15, 0 /*par->SingleAddrPage */ );
1108 vga_wgfx(NULL, 0x16, 0 /*par->DualAddrPage */ );
1109
1110 temp = vga_rgfx(NULL, 0x20);
1111 switch (info->fix.accel) {
1112 case FB_ACCEL_NEOMAGIC_NM2070:
1113 temp &= 0xFC; /* Save bits 7:2 */
1114 temp |= (par->PanelDispCntlReg1 & ~0xFC);
1115 break;
1116 case FB_ACCEL_NEOMAGIC_NM2090:
1117 case FB_ACCEL_NEOMAGIC_NM2093:
1118 case FB_ACCEL_NEOMAGIC_NM2097:
1119 case FB_ACCEL_NEOMAGIC_NM2160:
1120 temp &= 0xDC; /* Save bits 7:6,4:2 */
1121 temp |= (par->PanelDispCntlReg1 & ~0xDC);
1122 break;
1123 case FB_ACCEL_NEOMAGIC_NM2200:
1124 case FB_ACCEL_NEOMAGIC_NM2230:
1125 case FB_ACCEL_NEOMAGIC_NM2360:
1126 case FB_ACCEL_NEOMAGIC_NM2380:
1127 temp &= 0x98; /* Save bits 7,4:3 */
1128 temp |= (par->PanelDispCntlReg1 & ~0x98);
1129 break;
1130 }
1131 vga_wgfx(NULL, 0x20, temp);
1132
1133 temp = vga_rgfx(NULL, 0x25);
1134 temp &= 0x38; /* Save bits 5:3 */
1135 temp |= (par->PanelDispCntlReg2 & ~0x38);
1136 vga_wgfx(NULL, 0x25, temp);
1137
1138 if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1139 temp = vga_rgfx(NULL, 0x30);
1140 temp &= 0xEF; /* Save bits 7:5 and bits 3:0 */
1141 temp |= (par->PanelDispCntlReg3 & ~0xEF);
1142 vga_wgfx(NULL, 0x30, temp);
1143 }
1144
1145 vga_wgfx(NULL, 0x28, par->PanelVertCenterReg1);
1146 vga_wgfx(NULL, 0x29, par->PanelVertCenterReg2);
1147 vga_wgfx(NULL, 0x2a, par->PanelVertCenterReg3);
1148
1149 if (info->fix.accel != FB_ACCEL_NEOMAGIC_NM2070) {
1150 vga_wgfx(NULL, 0x32, par->PanelVertCenterReg4);
1151 vga_wgfx(NULL, 0x33, par->PanelHorizCenterReg1);
1152 vga_wgfx(NULL, 0x34, par->PanelHorizCenterReg2);
1153 vga_wgfx(NULL, 0x35, par->PanelHorizCenterReg3);
1154 }
1155
1156 if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2160)
1157 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1158
1159 if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1160 info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1161 info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1162 info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1163 vga_wgfx(NULL, 0x36, par->PanelHorizCenterReg4);
1164 vga_wgfx(NULL, 0x37, par->PanelVertCenterReg5);
1165 vga_wgfx(NULL, 0x38, par->PanelHorizCenterReg5);
1166
1167 clock_hi = 1;
1168 }
1169
1170 /* Program VCLK3 if needed. */
1171 if (par->ProgramVCLK && ((vga_rgfx(NULL, 0x9B) != par->VCLK3NumeratorLow)
1172 || (vga_rgfx(NULL, 0x9F) != par->VCLK3Denominator)
1173 || (clock_hi && ((vga_rgfx(NULL, 0x8F) & ~0x0f)
1174 != (par->VCLK3NumeratorHigh &
1175 ~0x0F))))) {
1176 vga_wgfx(NULL, 0x9B, par->VCLK3NumeratorLow);
1177 if (clock_hi) {
1178 temp = vga_rgfx(NULL, 0x8F);
1179 temp &= 0x0F; /* Save bits 3:0 */
1180 temp |= (par->VCLK3NumeratorHigh & ~0x0F);
1181 vga_wgfx(NULL, 0x8F, temp);
1182 }
1183 vga_wgfx(NULL, 0x9F, par->VCLK3Denominator);
1184 }
1185
1186 if (par->biosMode)
1187 vga_wcrt(NULL, 0x23, par->biosMode);
1188
1189 vga_wgfx(NULL, 0x93, 0xc0); /* Gives 5x faster framebuffer writes !!! */
1190
1191 /* Program vertical extension register */
1192 if (info->fix.accel == FB_ACCEL_NEOMAGIC_NM2200 ||
1193 info->fix.accel == FB_ACCEL_NEOMAGIC_NM2230 ||
1194 info->fix.accel == FB_ACCEL_NEOMAGIC_NM2360 ||
1195 info->fix.accel == FB_ACCEL_NEOMAGIC_NM2380) {
1196 vga_wcrt(NULL, 0x70, par->VerticalExt);
1197 }
1198
1199 vgaHWProtect(0); /* Turn on screen */
1200
1201 /* Calling this also locks offset registers required in update_start */
1202 neoLock(&par->state);
1203
1204 info->fix.line_length =
1205 info->var.xres_virtual * (info->var.bits_per_pixel >> 3);
1206
1207 switch (info->fix.accel) {
1208 case FB_ACCEL_NEOMAGIC_NM2200:
1209 case FB_ACCEL_NEOMAGIC_NM2230:
1210 case FB_ACCEL_NEOMAGIC_NM2360:
1211 case FB_ACCEL_NEOMAGIC_NM2380:
1212 neo2200_accel_init(info, &info->var);
1213 break;
1214 default:
1215 break;
1216 }
1217 return 0;
1218 }
1219
1220 static void neofb_update_start(struct fb_info *info,
1221 struct fb_var_screeninfo *var)
1222 {
1223 struct neofb_par *par = info->par;
1224 struct vgastate *state = &par->state;
1225 int oldExtCRTDispAddr;
1226 int Base;
1227
1228 DBG("neofb_update_start");
1229
1230 Base = (var->yoffset * var->xres_virtual + var->xoffset) >> 2;
1231 Base *= (var->bits_per_pixel + 7) / 8;
1232
1233 neoUnlock();
1234
1235 /*
1236 * These are the generic starting address registers.
1237 */
1238 vga_wcrt(state->vgabase, 0x0C, (Base & 0x00FF00) >> 8);
1239 vga_wcrt(state->vgabase, 0x0D, (Base & 0x00FF));
1240
1241 /*
1242 * Make sure we don't clobber some other bits that might already
1243 * have been set. NOTE: NM2200 has a writable bit 3, but it shouldn't
1244 * be needed.
1245 */
1246 oldExtCRTDispAddr = vga_rgfx(NULL, 0x0E);
1247 vga_wgfx(state->vgabase, 0x0E, (((Base >> 16) & 0x0f) | (oldExtCRTDispAddr & 0xf0)));
1248
1249 neoLock(state);
1250 }
1251
1252 /*
1253 * Pan or Wrap the Display
1254 */
1255 static int neofb_pan_display(struct fb_var_screeninfo *var,
1256 struct fb_info *info)
1257 {
1258 u_int y_bottom;
1259
1260 y_bottom = var->yoffset;
1261
1262 if (!(var->vmode & FB_VMODE_YWRAP))
1263 y_bottom += var->yres;
1264
1265 if (var->xoffset > (var->xres_virtual - var->xres))
1266 return -EINVAL;
1267 if (y_bottom > info->var.yres_virtual)
1268 return -EINVAL;
1269
1270 neofb_update_start(info, var);
1271
1272 info->var.xoffset = var->xoffset;
1273 info->var.yoffset = var->yoffset;
1274
1275 if (var->vmode & FB_VMODE_YWRAP)
1276 info->var.vmode |= FB_VMODE_YWRAP;
1277 else
1278 info->var.vmode &= ~FB_VMODE_YWRAP;
1279 return 0;
1280 }
1281
1282 static int neofb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1283 u_int transp, struct fb_info *fb)
1284 {
1285 if (regno >= fb->cmap.len || regno > 255)
1286 return -EINVAL;
1287
1288 if (fb->var.bits_per_pixel <= 8) {
1289 outb(regno, 0x3c8);
1290
1291 outb(red >> 10, 0x3c9);
1292 outb(green >> 10, 0x3c9);
1293 outb(blue >> 10, 0x3c9);
1294 } else if (regno < 16) {
1295 switch (fb->var.bits_per_pixel) {
1296 case 16:
1297 ((u32 *) fb->pseudo_palette)[regno] =
1298 ((red & 0xf800)) | ((green & 0xfc00) >> 5) |
1299 ((blue & 0xf800) >> 11);
1300 break;
1301 case 24:
1302 ((u32 *) fb->pseudo_palette)[regno] =
1303 ((red & 0xff00) << 8) | ((green & 0xff00)) |
1304 ((blue & 0xff00) >> 8);
1305 break;
1306 #ifdef NO_32BIT_SUPPORT_YET
1307 case 32:
1308 ((u32 *) fb->pseudo_palette)[regno] =
1309 ((transp & 0xff00) << 16) | ((red & 0xff00) << 8) |
1310 ((green & 0xff00)) | ((blue & 0xff00) >> 8);
1311 break;
1312 #endif
1313 default:
1314 return 1;
1315 }
1316 }
1317
1318 return 0;
1319 }
1320
1321 /*
1322 * (Un)Blank the display.
1323 */
1324 static int neofb_blank(int blank_mode, struct fb_info *info)
1325 {
1326 /*
1327 * Blank the screen if blank_mode != 0, else unblank.
1328 * Return 0 if blanking succeeded, != 0 if un-/blanking failed due to
1329 * e.g. a video mode which doesn't support it. Implements VESA suspend
1330 * and powerdown modes for monitors, and backlight control on LCDs.
1331 * blank_mode == 0: unblanked (backlight on)
1332 * blank_mode == 1: blank (backlight on)
1333 * blank_mode == 2: suspend vsync (backlight off)
1334 * blank_mode == 3: suspend hsync (backlight off)
1335 * blank_mode == 4: powerdown (backlight off)
1336 *
1337 * wms...Enable VESA DPMS compatible powerdown mode
1338 * run "setterm -powersave powerdown" to take advantage
1339 */
1340 struct neofb_par *par = info->par;
1341 int seqflags, lcdflags, dpmsflags, reg, tmpdisp;
1342
1343 /*
1344 * Read back the register bits related to display configuration. They might
1345 * have been changed underneath the driver via Fn key stroke.
1346 */
1347 neoUnlock();
1348 tmpdisp = vga_rgfx(NULL, 0x20) & 0x03;
1349 neoLock(&par->state);
1350
1351 /* In case we blank the screen, we want to store the possibly new
1352 * configuration in the driver. During un-blank, we re-apply this setting,
1353 * since the LCD bit will be cleared in order to switch off the backlight.
1354 */
1355 if (par->PanelDispCntlRegRead) {
1356 par->PanelDispCntlReg1 = tmpdisp;
1357 }
1358 par->PanelDispCntlRegRead = !blank_mode;
1359
1360 switch (blank_mode) {
1361 case FB_BLANK_POWERDOWN: /* powerdown - both sync lines down */
1362 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1363 lcdflags = 0; /* LCD off */
1364 dpmsflags = NEO_GR01_SUPPRESS_HSYNC |
1365 NEO_GR01_SUPPRESS_VSYNC;
1366 #ifdef CONFIG_TOSHIBA
1367 /* Do we still need this ? */
1368 /* attempt to turn off backlight on toshiba; also turns off external */
1369 {
1370 SMMRegisters regs;
1371
1372 regs.eax = 0xff00; /* HCI_SET */
1373 regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1374 regs.ecx = 0x0000; /* HCI_DISABLE */
1375 tosh_smm(&regs);
1376 }
1377 #endif
1378 break;
1379 case FB_BLANK_HSYNC_SUSPEND: /* hsync off */
1380 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1381 lcdflags = 0; /* LCD off */
1382 dpmsflags = NEO_GR01_SUPPRESS_HSYNC;
1383 break;
1384 case FB_BLANK_VSYNC_SUSPEND: /* vsync off */
1385 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1386 lcdflags = 0; /* LCD off */
1387 dpmsflags = NEO_GR01_SUPPRESS_VSYNC;
1388 break;
1389 case FB_BLANK_NORMAL: /* just blank screen (backlight stays on) */
1390 seqflags = VGA_SR01_SCREEN_OFF; /* Disable sequencer */
1391 /*
1392 * During a blank operation with the LID shut, we might store "LCD off"
1393 * by mistake. Due to timing issues, the BIOS may switch the lights
1394 * back on, and we turn it back off once we "unblank".
1395 *
1396 * So here is an attempt to implement ">=" - if we are in the process
1397 * of unblanking, and the LCD bit is unset in the driver but set in the
1398 * register, we must keep it.
1399 */
1400 lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
1401 dpmsflags = 0x00; /* no hsync/vsync suppression */
1402 break;
1403 case FB_BLANK_UNBLANK: /* unblank */
1404 seqflags = 0; /* Enable sequencer */
1405 lcdflags = ((par->PanelDispCntlReg1 | tmpdisp) & 0x02); /* LCD normal */
1406 dpmsflags = 0x00; /* no hsync/vsync suppression */
1407 #ifdef CONFIG_TOSHIBA
1408 /* Do we still need this ? */
1409 /* attempt to re-enable backlight/external on toshiba */
1410 {
1411 SMMRegisters regs;
1412
1413 regs.eax = 0xff00; /* HCI_SET */
1414 regs.ebx = 0x0002; /* HCI_BACKLIGHT */
1415 regs.ecx = 0x0001; /* HCI_ENABLE */
1416 tosh_smm(&regs);
1417 }
1418 #endif
1419 break;
1420 default: /* Anything else we don't understand; return 1 to tell
1421 * fb_blank we didn't aactually do anything */
1422 return 1;
1423 }
1424
1425 neoUnlock();
1426 reg = (vga_rseq(NULL, 0x01) & ~0x20) | seqflags;
1427 vga_wseq(NULL, 0x01, reg);
1428 reg = (vga_rgfx(NULL, 0x20) & ~0x02) | lcdflags;
1429 vga_wgfx(NULL, 0x20, reg);
1430 reg = (vga_rgfx(NULL, 0x01) & ~0xF0) | 0x80 | dpmsflags;
1431 vga_wgfx(NULL, 0x01, reg);
1432 neoLock(&par->state);
1433 return 0;
1434 }
1435
1436 static void
1437 neo2200_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1438 {
1439 struct neofb_par *par = info->par;
1440 u_long dst, rop;
1441
1442 dst = rect->dx + rect->dy * info->var.xres_virtual;
1443 rop = rect->rop ? 0x060000 : 0x0c0000;
1444
1445 neo2200_wait_fifo(info, 4);
1446
1447 /* set blt control */
1448 writel(NEO_BC3_FIFO_EN |
1449 NEO_BC0_SRC_IS_FG | NEO_BC3_SKIP_MAPPING |
1450 // NEO_BC3_DST_XY_ADDR |
1451 // NEO_BC3_SRC_XY_ADDR |
1452 rop, &par->neo2200->bltCntl);
1453
1454 switch (info->var.bits_per_pixel) {
1455 case 8:
1456 writel(rect->color, &par->neo2200->fgColor);
1457 break;
1458 case 16:
1459 case 24:
1460 writel(((u32 *) (info->pseudo_palette))[rect->color],
1461 &par->neo2200->fgColor);
1462 break;
1463 }
1464
1465 writel(dst * ((info->var.bits_per_pixel + 7) >> 3),
1466 &par->neo2200->dstStart);
1467 writel((rect->height << 16) | (rect->width & 0xffff),
1468 &par->neo2200->xyExt);
1469 }
1470
1471 static void
1472 neo2200_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1473 {
1474 u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
1475 struct neofb_par *par = info->par;
1476 u_long src, dst, bltCntl;
1477
1478 bltCntl = NEO_BC3_FIFO_EN | NEO_BC3_SKIP_MAPPING | 0x0C0000;
1479
1480 if ((dy > sy) || ((dy == sy) && (dx > sx))) {
1481 /* Start with the lower right corner */
1482 sy += (area->height - 1);
1483 dy += (area->height - 1);
1484 sx += (area->width - 1);
1485 dx += (area->width - 1);
1486
1487 bltCntl |= NEO_BC0_X_DEC | NEO_BC0_DST_Y_DEC | NEO_BC0_SRC_Y_DEC;
1488 }
1489
1490 src = sx * (info->var.bits_per_pixel >> 3) + sy*info->fix.line_length;
1491 dst = dx * (info->var.bits_per_pixel >> 3) + dy*info->fix.line_length;
1492
1493 neo2200_wait_fifo(info, 4);
1494
1495 /* set blt control */
1496 writel(bltCntl, &par->neo2200->bltCntl);
1497
1498 writel(src, &par->neo2200->srcStart);
1499 writel(dst, &par->neo2200->dstStart);
1500 writel((area->height << 16) | (area->width & 0xffff),
1501 &par->neo2200->xyExt);
1502 }
1503
1504 static void
1505 neo2200_imageblit(struct fb_info *info, const struct fb_image *image)
1506 {
1507 struct neofb_par *par = info->par;
1508 int s_pitch = (image->width * image->depth + 7) >> 3;
1509 int scan_align = info->pixmap.scan_align - 1;
1510 int buf_align = info->pixmap.buf_align - 1;
1511 int bltCntl_flags, d_pitch, data_len;
1512
1513 // The data is padded for the hardware
1514 d_pitch = (s_pitch + scan_align) & ~scan_align;
1515 data_len = ((d_pitch * image->height) + buf_align) & ~buf_align;
1516
1517 neo2200_sync(info);
1518
1519 if (image->depth == 1) {
1520 if (info->var.bits_per_pixel == 24 && image->width < 16) {
1521 /* FIXME. There is a bug with accelerated color-expanded
1522 * transfers in 24 bit mode if the image being transferred
1523 * is less than 16 bits wide. This is due to insufficient
1524 * padding when writing the image. We need to adjust
1525 * struct fb_pixmap. Not yet done. */
1526 return cfb_imageblit(info, image);
1527 }
1528 bltCntl_flags = NEO_BC0_SRC_MONO;
1529 } else if (image->depth == info->var.bits_per_pixel) {
1530 bltCntl_flags = 0;
1531 } else {
1532 /* We don't currently support hardware acceleration if image
1533 * depth is different from display */
1534 return cfb_imageblit(info, image);
1535 }
1536
1537 switch (info->var.bits_per_pixel) {
1538 case 8:
1539 writel(image->fg_color, &par->neo2200->fgColor);
1540 writel(image->bg_color, &par->neo2200->bgColor);
1541 break;
1542 case 16:
1543 case 24:
1544 writel(((u32 *) (info->pseudo_palette))[image->fg_color],
1545 &par->neo2200->fgColor);
1546 writel(((u32 *) (info->pseudo_palette))[image->bg_color],
1547 &par->neo2200->bgColor);
1548 break;
1549 }
1550
1551 writel(NEO_BC0_SYS_TO_VID |
1552 NEO_BC3_SKIP_MAPPING | bltCntl_flags |
1553 // NEO_BC3_DST_XY_ADDR |
1554 0x0c0000, &par->neo2200->bltCntl);
1555
1556 writel(0, &par->neo2200->srcStart);
1557 // par->neo2200->dstStart = (image->dy << 16) | (image->dx & 0xffff);
1558 writel(((image->dx & 0xffff) * (info->var.bits_per_pixel >> 3) +
1559 image->dy * info->fix.line_length), &par->neo2200->dstStart);
1560 writel((image->height << 16) | (image->width & 0xffff),
1561 &par->neo2200->xyExt);
1562
1563 memcpy_toio(par->mmio_vbase + 0x100000, image->data, data_len);
1564 }
1565
1566 static void
1567 neofb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
1568 {
1569 switch (info->fix.accel) {
1570 case FB_ACCEL_NEOMAGIC_NM2200:
1571 case FB_ACCEL_NEOMAGIC_NM2230:
1572 case FB_ACCEL_NEOMAGIC_NM2360:
1573 case FB_ACCEL_NEOMAGIC_NM2380:
1574 neo2200_fillrect(info, rect);
1575 break;
1576 default:
1577 cfb_fillrect(info, rect);
1578 break;
1579 }
1580 }
1581
1582 static void
1583 neofb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
1584 {
1585 switch (info->fix.accel) {
1586 case FB_ACCEL_NEOMAGIC_NM2200:
1587 case FB_ACCEL_NEOMAGIC_NM2230:
1588 case FB_ACCEL_NEOMAGIC_NM2360:
1589 case FB_ACCEL_NEOMAGIC_NM2380:
1590 neo2200_copyarea(info, area);
1591 break;
1592 default:
1593 cfb_copyarea(info, area);
1594 break;
1595 }
1596 }
1597
1598 static void
1599 neofb_imageblit(struct fb_info *info, const struct fb_image *image)
1600 {
1601 switch (info->fix.accel) {
1602 case FB_ACCEL_NEOMAGIC_NM2200:
1603 case FB_ACCEL_NEOMAGIC_NM2230:
1604 case FB_ACCEL_NEOMAGIC_NM2360:
1605 case FB_ACCEL_NEOMAGIC_NM2380:
1606 neo2200_imageblit(info, image);
1607 break;
1608 default:
1609 cfb_imageblit(info, image);
1610 break;
1611 }
1612 }
1613
1614 static int
1615 neofb_sync(struct fb_info *info)
1616 {
1617 switch (info->fix.accel) {
1618 case FB_ACCEL_NEOMAGIC_NM2200:
1619 case FB_ACCEL_NEOMAGIC_NM2230:
1620 case FB_ACCEL_NEOMAGIC_NM2360:
1621 case FB_ACCEL_NEOMAGIC_NM2380:
1622 neo2200_sync(info);
1623 break;
1624 default:
1625 break;
1626 }
1627 return 0;
1628 }
1629
1630 /*
1631 static void
1632 neofb_draw_cursor(struct fb_info *info, u8 *dst, u8 *src, unsigned int width)
1633 {
1634 //memset_io(info->sprite.addr, 0xff, 1);
1635 }
1636
1637 static int
1638 neofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1639 {
1640 struct neofb_par *par = (struct neofb_par *) info->par;
1641
1642 * Disable cursor *
1643 write_le32(NEOREG_CURSCNTL, ~NEO_CURS_ENABLE, par);
1644
1645 if (cursor->set & FB_CUR_SETPOS) {
1646 u32 x = cursor->image.dx;
1647 u32 y = cursor->image.dy;
1648
1649 info->cursor.image.dx = x;
1650 info->cursor.image.dy = y;
1651 write_le32(NEOREG_CURSX, x, par);
1652 write_le32(NEOREG_CURSY, y, par);
1653 }
1654
1655 if (cursor->set & FB_CUR_SETSIZE) {
1656 info->cursor.image.height = cursor->image.height;
1657 info->cursor.image.width = cursor->image.width;
1658 }
1659
1660 if (cursor->set & FB_CUR_SETHOT)
1661 info->cursor.hot = cursor->hot;
1662
1663 if (cursor->set & FB_CUR_SETCMAP) {
1664 if (cursor->image.depth == 1) {
1665 u32 fg = cursor->image.fg_color;
1666 u32 bg = cursor->image.bg_color;
1667
1668 info->cursor.image.fg_color = fg;
1669 info->cursor.image.bg_color = bg;
1670
1671 fg = ((fg & 0xff0000) >> 16) | ((fg & 0xff) << 16) | (fg & 0xff00);
1672 bg = ((bg & 0xff0000) >> 16) | ((bg & 0xff) << 16) | (bg & 0xff00);
1673 write_le32(NEOREG_CURSFGCOLOR, fg, par);
1674 write_le32(NEOREG_CURSBGCOLOR, bg, par);
1675 }
1676 }
1677
1678 if (cursor->set & FB_CUR_SETSHAPE)
1679 fb_load_cursor_image(info);
1680
1681 if (info->cursor.enable)
1682 write_le32(NEOREG_CURSCNTL, NEO_CURS_ENABLE, par);
1683 return 0;
1684 }
1685 */
1686
1687 static struct fb_ops neofb_ops = {
1688 .owner = THIS_MODULE,
1689 .fb_open = neofb_open,
1690 .fb_release = neofb_release,
1691 .fb_check_var = neofb_check_var,
1692 .fb_set_par = neofb_set_par,
1693 .fb_setcolreg = neofb_setcolreg,
1694 .fb_pan_display = neofb_pan_display,
1695 .fb_blank = neofb_blank,
1696 .fb_sync = neofb_sync,
1697 .fb_fillrect = neofb_fillrect,
1698 .fb_copyarea = neofb_copyarea,
1699 .fb_imageblit = neofb_imageblit,
1700 };
1701
1702 /* --------------------------------------------------------------------- */
1703
1704 static struct fb_videomode __devinitdata mode800x480 = {
1705 .xres = 800,
1706 .yres = 480,
1707 .pixclock = 25000,
1708 .left_margin = 88,
1709 .right_margin = 40,
1710 .upper_margin = 23,
1711 .lower_margin = 1,
1712 .hsync_len = 128,
1713 .vsync_len = 4,
1714 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
1715 .vmode = FB_VMODE_NONINTERLACED
1716 };
1717
1718 static int __devinit neo_map_mmio(struct fb_info *info,
1719 struct pci_dev *dev)
1720 {
1721 struct neofb_par *par = info->par;
1722
1723 DBG("neo_map_mmio");
1724
1725 switch (info->fix.accel) {
1726 case FB_ACCEL_NEOMAGIC_NM2070:
1727 info->fix.mmio_start = pci_resource_start(dev, 0)+
1728 0x100000;
1729 break;
1730 case FB_ACCEL_NEOMAGIC_NM2090:
1731 case FB_ACCEL_NEOMAGIC_NM2093:
1732 info->fix.mmio_start = pci_resource_start(dev, 0)+
1733 0x200000;
1734 break;
1735 case FB_ACCEL_NEOMAGIC_NM2160:
1736 case FB_ACCEL_NEOMAGIC_NM2097:
1737 case FB_ACCEL_NEOMAGIC_NM2200:
1738 case FB_ACCEL_NEOMAGIC_NM2230:
1739 case FB_ACCEL_NEOMAGIC_NM2360:
1740 case FB_ACCEL_NEOMAGIC_NM2380:
1741 info->fix.mmio_start = pci_resource_start(dev, 1);
1742 break;
1743 default:
1744 info->fix.mmio_start = pci_resource_start(dev, 0);
1745 }
1746 info->fix.mmio_len = MMIO_SIZE;
1747
1748 if (!request_mem_region
1749 (info->fix.mmio_start, MMIO_SIZE, "memory mapped I/O")) {
1750 printk("neofb: memory mapped IO in use\n");
1751 return -EBUSY;
1752 }
1753
1754 par->mmio_vbase = ioremap(info->fix.mmio_start, MMIO_SIZE);
1755 if (!par->mmio_vbase) {
1756 printk("neofb: unable to map memory mapped IO\n");
1757 release_mem_region(info->fix.mmio_start,
1758 info->fix.mmio_len);
1759 return -ENOMEM;
1760 } else
1761 printk(KERN_INFO "neofb: mapped io at %p\n",
1762 par->mmio_vbase);
1763 return 0;
1764 }
1765
1766 static void neo_unmap_mmio(struct fb_info *info)
1767 {
1768 struct neofb_par *par = info->par;
1769
1770 DBG("neo_unmap_mmio");
1771
1772 iounmap(par->mmio_vbase);
1773 par->mmio_vbase = NULL;
1774
1775 release_mem_region(info->fix.mmio_start,
1776 info->fix.mmio_len);
1777 }
1778
1779 static int __devinit neo_map_video(struct fb_info *info,
1780 struct pci_dev *dev, int video_len)
1781 {
1782 //unsigned long addr;
1783
1784 DBG("neo_map_video");
1785
1786 info->fix.smem_start = pci_resource_start(dev, 0);
1787 info->fix.smem_len = video_len;
1788
1789 if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
1790 "frame buffer")) {
1791 printk("neofb: frame buffer in use\n");
1792 return -EBUSY;
1793 }
1794
1795 info->screen_base =
1796 ioremap(info->fix.smem_start, info->fix.smem_len);
1797 if (!info->screen_base) {
1798 printk("neofb: unable to map screen memory\n");
1799 release_mem_region(info->fix.smem_start,
1800 info->fix.smem_len);
1801 return -ENOMEM;
1802 } else
1803 printk(KERN_INFO "neofb: mapped framebuffer at %p\n",
1804 info->screen_base);
1805
1806 #ifdef CONFIG_MTRR
1807 ((struct neofb_par *)(info->par))->mtrr =
1808 mtrr_add(info->fix.smem_start, pci_resource_len(dev, 0),
1809 MTRR_TYPE_WRCOMB, 1);
1810 #endif
1811
1812 /* Clear framebuffer, it's all white in memory after boot */
1813 memset_io(info->screen_base, 0, info->fix.smem_len);
1814
1815 /* Allocate Cursor drawing pad.
1816 info->fix.smem_len -= PAGE_SIZE;
1817 addr = info->fix.smem_start + info->fix.smem_len;
1818 write_le32(NEOREG_CURSMEMPOS, ((0x000f & (addr >> 10)) << 8) |
1819 ((0x0ff0 & (addr >> 10)) >> 4), par);
1820 addr = (unsigned long) info->screen_base + info->fix.smem_len;
1821 info->sprite.addr = (u8 *) addr; */
1822 return 0;
1823 }
1824
1825 static void neo_unmap_video(struct fb_info *info)
1826 {
1827 DBG("neo_unmap_video");
1828
1829 #ifdef CONFIG_MTRR
1830 {
1831 struct neofb_par *par = info->par;
1832
1833 mtrr_del(par->mtrr, info->fix.smem_start,
1834 info->fix.smem_len);
1835 }
1836 #endif
1837 iounmap(info->screen_base);
1838 info->screen_base = NULL;
1839
1840 release_mem_region(info->fix.smem_start,
1841 info->fix.smem_len);
1842 }
1843
1844 static int __devinit neo_scan_monitor(struct fb_info *info)
1845 {
1846 struct neofb_par *par = info->par;
1847 unsigned char type, display;
1848 int w;
1849
1850 // Eventually we will have i2c support.
1851 info->monspecs.modedb = kmalloc(sizeof(struct fb_videomode), GFP_KERNEL);
1852 if (!info->monspecs.modedb)
1853 return -ENOMEM;
1854 info->monspecs.modedb_len = 1;
1855
1856 /* Determine the panel type */
1857 vga_wgfx(NULL, 0x09, 0x26);
1858 type = vga_rgfx(NULL, 0x21);
1859 display = vga_rgfx(NULL, 0x20);
1860 if (!par->internal_display && !par->external_display) {
1861 par->internal_display = display & 2 || !(display & 3) ? 1 : 0;
1862 par->external_display = display & 1;
1863 printk (KERN_INFO "Autodetected %s display\n",
1864 par->internal_display && par->external_display ? "simultaneous" :
1865 par->internal_display ? "internal" : "external");
1866 }
1867
1868 /* Determine panel width -- used in NeoValidMode. */
1869 w = vga_rgfx(NULL, 0x20);
1870 vga_wgfx(NULL, 0x09, 0x00);
1871 switch ((w & 0x18) >> 3) {
1872 case 0x00:
1873 // 640x480@60
1874 par->NeoPanelWidth = 640;
1875 par->NeoPanelHeight = 480;
1876 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1877 break;
1878 case 0x01:
1879 par->NeoPanelWidth = 800;
1880 if (par->libretto) {
1881 par->NeoPanelHeight = 480;
1882 memcpy(info->monspecs.modedb, &mode800x480, sizeof(struct fb_videomode));
1883 } else {
1884 // 800x600@60
1885 par->NeoPanelHeight = 600;
1886 memcpy(info->monspecs.modedb, &vesa_modes[8], sizeof(struct fb_videomode));
1887 }
1888 break;
1889 case 0x02:
1890 // 1024x768@60
1891 par->NeoPanelWidth = 1024;
1892 par->NeoPanelHeight = 768;
1893 memcpy(info->monspecs.modedb, &vesa_modes[13], sizeof(struct fb_videomode));
1894 break;
1895 case 0x03:
1896 /* 1280x1024@60 panel support needs to be added */
1897 #ifdef NOT_DONE
1898 par->NeoPanelWidth = 1280;
1899 par->NeoPanelHeight = 1024;
1900 memcpy(info->monspecs.modedb, &vesa_modes[20], sizeof(struct fb_videomode));
1901 break;
1902 #else
1903 printk(KERN_ERR
1904 "neofb: Only 640x480, 800x600/480 and 1024x768 panels are currently supported\n");
1905 return -1;
1906 #endif
1907 default:
1908 // 640x480@60
1909 par->NeoPanelWidth = 640;
1910 par->NeoPanelHeight = 480;
1911 memcpy(info->monspecs.modedb, &vesa_modes[3], sizeof(struct fb_videomode));
1912 break;
1913 }
1914
1915 printk(KERN_INFO "Panel is a %dx%d %s %s display\n",
1916 par->NeoPanelWidth,
1917 par->NeoPanelHeight,
1918 (type & 0x02) ? "color" : "monochrome",
1919 (type & 0x10) ? "TFT" : "dual scan");
1920 return 0;
1921 }
1922
1923 static int __devinit neo_init_hw(struct fb_info *info)
1924 {
1925 struct neofb_par *par = info->par;
1926 int videoRam = 896;
1927 int maxClock = 65000;
1928 int CursorMem = 1024;
1929 int CursorOff = 0x100;
1930 int linearSize = 1024;
1931 int maxWidth = 1024;
1932 int maxHeight = 1024;
1933
1934 DBG("neo_init_hw");
1935
1936 neoUnlock();
1937
1938 #if 0
1939 printk(KERN_DEBUG "--- Neo extended register dump ---\n");
1940 for (int w = 0; w < 0x85; w++)
1941 printk(KERN_DEBUG "CR %p: %p\n", (void *) w,
1942 (void *) vga_rcrt(NULL, w));
1943 for (int w = 0; w < 0xC7; w++)
1944 printk(KERN_DEBUG "GR %p: %p\n", (void *) w,
1945 (void *) vga_rgfx(NULL, w));
1946 #endif
1947 switch (info->fix.accel) {
1948 case FB_ACCEL_NEOMAGIC_NM2070:
1949 videoRam = 896;
1950 maxClock = 65000;
1951 CursorMem = 2048;
1952 CursorOff = 0x100;
1953 linearSize = 1024;
1954 maxWidth = 1024;
1955 maxHeight = 1024;
1956 break;
1957 case FB_ACCEL_NEOMAGIC_NM2090:
1958 case FB_ACCEL_NEOMAGIC_NM2093:
1959 videoRam = 1152;
1960 maxClock = 80000;
1961 CursorMem = 2048;
1962 CursorOff = 0x100;
1963 linearSize = 2048;
1964 maxWidth = 1024;
1965 maxHeight = 1024;
1966 break;
1967 case FB_ACCEL_NEOMAGIC_NM2097:
1968 videoRam = 1152;
1969 maxClock = 80000;
1970 CursorMem = 1024;
1971 CursorOff = 0x100;
1972 linearSize = 2048;
1973 maxWidth = 1024;
1974 maxHeight = 1024;
1975 break;
1976 case FB_ACCEL_NEOMAGIC_NM2160:
1977 videoRam = 2048;
1978 maxClock = 90000;
1979 CursorMem = 1024;
1980 CursorOff = 0x100;
1981 linearSize = 2048;
1982 maxWidth = 1024;
1983 maxHeight = 1024;
1984 break;
1985 case FB_ACCEL_NEOMAGIC_NM2200:
1986 videoRam = 2560;
1987 maxClock = 110000;
1988 CursorMem = 1024;
1989 CursorOff = 0x1000;
1990 linearSize = 4096;
1991 maxWidth = 1280;
1992 maxHeight = 1024; /* ???? */
1993
1994 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
1995 break;
1996 case FB_ACCEL_NEOMAGIC_NM2230:
1997 videoRam = 3008;
1998 maxClock = 110000;
1999 CursorMem = 1024;
2000 CursorOff = 0x1000;
2001 linearSize = 4096;
2002 maxWidth = 1280;
2003 maxHeight = 1024; /* ???? */
2004
2005 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
2006 break;
2007 case FB_ACCEL_NEOMAGIC_NM2360:
2008 videoRam = 4096;
2009 maxClock = 110000;
2010 CursorMem = 1024;
2011 CursorOff = 0x1000;
2012 linearSize = 4096;
2013 maxWidth = 1280;
2014 maxHeight = 1024; /* ???? */
2015
2016 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
2017 break;
2018 case FB_ACCEL_NEOMAGIC_NM2380:
2019 videoRam = 6144;
2020 maxClock = 110000;
2021 CursorMem = 1024;
2022 CursorOff = 0x1000;
2023 linearSize = 8192;
2024 maxWidth = 1280;
2025 maxHeight = 1024; /* ???? */
2026
2027 par->neo2200 = (Neo2200 __iomem *) par->mmio_vbase;
2028 break;
2029 }
2030 /*
2031 info->sprite.size = CursorMem;
2032 info->sprite.scan_align = 1;
2033 info->sprite.buf_align = 1;
2034 info->sprite.flags = FB_PIXMAP_IO;
2035 info->sprite.outbuf = neofb_draw_cursor;
2036 */
2037 par->maxClock = maxClock;
2038 par->cursorOff = CursorOff;
2039 return ((videoRam * 1024));
2040 }
2041
2042
2043 static struct fb_info *__devinit neo_alloc_fb_info(struct pci_dev *dev, const struct
2044 pci_device_id *id)
2045 {
2046 struct fb_info *info;
2047 struct neofb_par *par;
2048
2049 info = framebuffer_alloc(sizeof(struct neofb_par), &dev->dev);
2050
2051 if (!info)
2052 return NULL;
2053
2054 par = info->par;
2055
2056 info->fix.accel = id->driver_data;
2057
2058 mutex_init(&par->open_lock);
2059 par->pci_burst = !nopciburst;
2060 par->lcd_stretch = !nostretch;
2061 par->libretto = libretto;
2062
2063 par->internal_display = internal;
2064 par->external_display = external;
2065 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
2066
2067 switch (info->fix.accel) {
2068 case FB_ACCEL_NEOMAGIC_NM2070:
2069 sprintf(info->fix.id, "MagicGraph 128");
2070 break;
2071 case FB_ACCEL_NEOMAGIC_NM2090:
2072 sprintf(info->fix.id, "MagicGraph 128V");
2073 break;
2074 case FB_ACCEL_NEOMAGIC_NM2093:
2075 sprintf(info->fix.id, "MagicGraph 128ZV");
2076 break;
2077 case FB_ACCEL_NEOMAGIC_NM2097:
2078 sprintf(info->fix.id, "MagicGraph 128ZV+");
2079 break;
2080 case FB_ACCEL_NEOMAGIC_NM2160:
2081 sprintf(info->fix.id, "MagicGraph 128XD");
2082 break;
2083 case FB_ACCEL_NEOMAGIC_NM2200:
2084 sprintf(info->fix.id, "MagicGraph 256AV");
2085 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2086 FBINFO_HWACCEL_COPYAREA |
2087 FBINFO_HWACCEL_FILLRECT;
2088 break;
2089 case FB_ACCEL_NEOMAGIC_NM2230:
2090 sprintf(info->fix.id, "MagicGraph 256AV+");
2091 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2092 FBINFO_HWACCEL_COPYAREA |
2093 FBINFO_HWACCEL_FILLRECT;
2094 break;
2095 case FB_ACCEL_NEOMAGIC_NM2360:
2096 sprintf(info->fix.id, "MagicGraph 256ZX");
2097 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2098 FBINFO_HWACCEL_COPYAREA |
2099 FBINFO_HWACCEL_FILLRECT;
2100 break;
2101 case FB_ACCEL_NEOMAGIC_NM2380:
2102 sprintf(info->fix.id, "MagicGraph 256XL+");
2103 info->flags |= FBINFO_HWACCEL_IMAGEBLIT |
2104 FBINFO_HWACCEL_COPYAREA |
2105 FBINFO_HWACCEL_FILLRECT;
2106 break;
2107 }
2108
2109 info->fix.type = FB_TYPE_PACKED_PIXELS;
2110 info->fix.type_aux = 0;
2111 info->fix.xpanstep = 0;
2112 info->fix.ypanstep = 4;
2113 info->fix.ywrapstep = 0;
2114 info->fix.accel = id->driver_data;
2115
2116 info->fbops = &neofb_ops;
2117 info->pseudo_palette = par->palette;
2118 return info;
2119 }
2120
2121 static void neo_free_fb_info(struct fb_info *info)
2122 {
2123 if (info) {
2124 /*
2125 * Free the colourmap
2126 */
2127 fb_dealloc_cmap(&info->cmap);
2128 framebuffer_release(info);
2129 }
2130 }
2131
2132 /* --------------------------------------------------------------------- */
2133
2134 static int __devinit neofb_probe(struct pci_dev *dev,
2135 const struct pci_device_id *id)
2136 {
2137 struct fb_info *info;
2138 u_int h_sync, v_sync;
2139 int video_len, err;
2140
2141 DBG("neofb_probe");
2142
2143 err = pci_enable_device(dev);
2144 if (err)
2145 return err;
2146
2147 err = -ENOMEM;
2148 info = neo_alloc_fb_info(dev, id);
2149 if (!info)
2150 return err;
2151
2152 err = neo_map_mmio(info, dev);
2153 if (err)
2154 goto err_map_mmio;
2155
2156 err = neo_scan_monitor(info);
2157 if (err)
2158 goto err_scan_monitor;
2159
2160 video_len = neo_init_hw(info);
2161 if (video_len < 0) {
2162 err = video_len;
2163 goto err_init_hw;
2164 }
2165
2166 err = neo_map_video(info, dev, video_len);
2167 if (err)
2168 goto err_init_hw;
2169
2170 if (!fb_find_mode(&info->var, info, mode_option, NULL, 0,
2171 info->monspecs.modedb, 16)) {
2172 printk(KERN_ERR "neofb: Unable to find usable video mode.\n");
2173 goto err_map_video;
2174 }
2175
2176 /*
2177 * Calculate the hsync and vsync frequencies. Note that
2178 * we split the 1e12 constant up so that we can preserve
2179 * the precision and fit the results into 32-bit registers.
2180 * (1953125000 * 512 = 1e12)
2181 */
2182 h_sync = 1953125000 / info->var.pixclock;
2183 h_sync =
2184 h_sync * 512 / (info->var.xres + info->var.left_margin +
2185 info->var.right_margin + info->var.hsync_len);
2186 v_sync =
2187 h_sync / (info->var.yres + info->var.upper_margin +
2188 info->var.lower_margin + info->var.vsync_len);
2189
2190 printk(KERN_INFO "neofb v" NEOFB_VERSION
2191 ": %dkB VRAM, using %dx%d, %d.%03dkHz, %dHz\n",
2192 info->fix.smem_len >> 10, info->var.xres,
2193 info->var.yres, h_sync / 1000, h_sync % 1000, v_sync);
2194
2195 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
2196 goto err_map_video;
2197
2198 err = register_framebuffer(info);
2199 if (err < 0)
2200 goto err_reg_fb;
2201
2202 printk(KERN_INFO "fb%d: %s frame buffer device\n",
2203 info->node, info->fix.id);
2204
2205 /*
2206 * Our driver data
2207 */
2208 pci_set_drvdata(dev, info);
2209 return 0;
2210
2211 err_reg_fb:
2212 fb_dealloc_cmap(&info->cmap);
2213 err_map_video:
2214 neo_unmap_video(info);
2215 err_init_hw:
2216 fb_destroy_modedb(info->monspecs.modedb);
2217 err_scan_monitor:
2218 neo_unmap_mmio(info);
2219 err_map_mmio:
2220 neo_free_fb_info(info);
2221 return err;
2222 }
2223
2224 static void __devexit neofb_remove(struct pci_dev *dev)
2225 {
2226 struct fb_info *info = pci_get_drvdata(dev);
2227
2228 DBG("neofb_remove");
2229
2230 if (info) {
2231 /*
2232 * If unregister_framebuffer fails, then
2233 * we will be leaving hooks that could cause
2234 * oopsen laying around.
2235 */
2236 if (unregister_framebuffer(info))
2237 printk(KERN_WARNING
2238 "neofb: danger danger! Oopsen imminent!\n");
2239
2240 neo_unmap_video(info);
2241 fb_destroy_modedb(info->monspecs.modedb);
2242 neo_unmap_mmio(info);
2243 neo_free_fb_info(info);
2244
2245 /*
2246 * Ensure that the driver data is no longer
2247 * valid.
2248 */
2249 pci_set_drvdata(dev, NULL);
2250 }
2251 }
2252
2253 static struct pci_device_id neofb_devices[] = {
2254 {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2070,
2255 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2070},
2256
2257 {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2090,
2258 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2090},
2259
2260 {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2093,
2261 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2093},
2262
2263 {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2097,
2264 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2097},
2265
2266 {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2160,
2267 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2160},
2268
2269 {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2200,
2270 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2200},
2271
2272 {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2230,
2273 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2230},
2274
2275 {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2360,
2276 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2360},
2277
2278 {PCI_VENDOR_ID_NEOMAGIC, PCI_CHIP_NM2380,
2279 PCI_ANY_ID, PCI_ANY_ID, 0, 0, FB_ACCEL_NEOMAGIC_NM2380},
2280
2281 {0, 0, 0, 0, 0, 0, 0}
2282 };
2283
2284 MODULE_DEVICE_TABLE(pci, neofb_devices);
2285
2286 static struct pci_driver neofb_driver = {
2287 .name = "neofb",
2288 .id_table = neofb_devices,
2289 .probe = neofb_probe,
2290 .remove = __devexit_p(neofb_remove)
2291 };
2292
2293 /* ************************* init in-kernel code ************************** */
2294
2295 #ifndef MODULE
2296 static int __init neofb_setup(char *options)
2297 {
2298 char *this_opt;
2299
2300 DBG("neofb_setup");
2301
2302 if (!options || !*options)
2303 return 0;
2304
2305 while ((this_opt = strsep(&options, ",")) != NULL) {
2306 if (!*this_opt)
2307 continue;
2308
2309 if (!strncmp(this_opt, "internal", 8))
2310 internal = 1;
2311 else if (!strncmp(this_opt, "external", 8))
2312 external = 1;
2313 else if (!strncmp(this_opt, "nostretch", 9))
2314 nostretch = 1;
2315 else if (!strncmp(this_opt, "nopciburst", 10))
2316 nopciburst = 1;
2317 else if (!strncmp(this_opt, "libretto", 8))
2318 libretto = 1;
2319 else
2320 mode_option = this_opt;
2321 }
2322 return 0;
2323 }
2324 #endif /* MODULE */
2325
2326 static int __init neofb_init(void)
2327 {
2328 #ifndef MODULE
2329 char *option = NULL;
2330
2331 if (fb_get_options("neofb", &option))
2332 return -ENODEV;
2333 neofb_setup(option);
2334 #endif
2335 return pci_register_driver(&neofb_driver);
2336 }
2337
2338 module_init(neofb_init);
2339
2340 #ifdef MODULE
2341 static void __exit neofb_exit(void)
2342 {
2343 pci_unregister_driver(&neofb_driver);
2344 }
2345
2346 module_exit(neofb_exit);
2347 #endif /* MODULE */
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