1 // SPDX-License-Identifier: GPL-2.0-only
4 * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450.
6 * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
8 * Portions Copyright (c) 2001 Matrox Graphics Inc.
10 * Version: 1.65 2002/08/14
14 #include "matroxfb_maven.h"
15 #include "matroxfb_crtc2.h"
16 #include "matroxfb_misc.h"
17 #include "matroxfb_DAC1064.h"
18 #include <linux/matroxfb.h>
19 #include <linux/slab.h>
20 #include <linux/uaccess.h>
22 /* **************************************************** */
24 static int mem = 8192;
26 module_param(mem, int, 0);
27 MODULE_PARM_DESC(mem, "Memory size reserved for dualhead (default=8MB)");
29 /* **************************************************** */
31 static int matroxfb_dh_setcolreg(unsigned regno, unsigned red, unsigned green,
32 unsigned blue, unsigned transp, struct fb_info* info) {
34 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
38 if (m2info->fbcon.var.grayscale) {
39 /* gray = 0.30*R + 0.59*G + 0.11*B */
40 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
42 red = CNVT_TOHW(red, m2info->fbcon.var.red.length);
43 green = CNVT_TOHW(green, m2info->fbcon.var.green.length);
44 blue = CNVT_TOHW(blue, m2info->fbcon.var.blue.length);
45 transp = CNVT_TOHW(transp, m2info->fbcon.var.transp.length);
47 col = (red << m2info->fbcon.var.red.offset) |
48 (green << m2info->fbcon.var.green.offset) |
49 (blue << m2info->fbcon.var.blue.offset) |
50 (transp << m2info->fbcon.var.transp.offset);
52 switch (m2info->fbcon.var.bits_per_pixel) {
54 m2info->cmap[regno] = col | (col << 16);
57 m2info->cmap[regno] = col;
64 static void matroxfb_dh_restore(struct matroxfb_dh_fb_info* m2info,
65 struct my_timming* mt,
70 struct matrox_fb_info *minfo = m2info->primary_dev;
84 tmp |= 0x00000001; /* enable CRTC2 */
86 if (minfo->outputs[1].src == MATROXFB_SRC_CRTC2) {
87 if (minfo->devflags.g450dac) {
88 tmp |= 0x00000006; /* source from secondary pixel PLL */
89 /* no vidrst when in monitor mode */
90 if (minfo->outputs[1].mode != MATROXFB_OUTPUT_MODE_MONITOR) {
91 tmp |= 0xC0001000; /* Enable H/V vidrst */
94 tmp |= 0x00000002; /* source from VDOCLK */
95 tmp |= 0xC0000000; /* enable vvidrst & hvidrst */
96 /* MGA TVO is our clock source */
98 } else if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) {
99 tmp |= 0x00000004; /* source from pixclock */
100 /* PIXPLL is our clock source */
102 if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) {
103 tmp |= 0x00100000; /* connect CRTC2 to DAC */
105 if (mt->interlaced) {
106 tmp |= 0x02000000; /* interlaced, second field is bigger, as G450 apparently ignores it */
108 mt->VSyncStart >>= 1;
112 if ((mt->HTotal & 7) == 2) {
113 datactl |= 0x00000010;
116 tmp |= 0x10000000; /* 0x10000000 is VIDRST polarity */
117 mga_outl(0x3C14, ((mt->HDisplay - 8) << 16) | (mt->HTotal - 8));
118 mga_outl(0x3C18, ((mt->HSyncEnd - 8) << 16) | (mt->HSyncStart - 8));
119 mga_outl(0x3C1C, ((mt->VDisplay - 1) << 16) | (mt->VTotal - 1));
120 mga_outl(0x3C20, ((mt->VSyncEnd - 1) << 16) | (mt->VSyncStart - 1));
121 mga_outl(0x3C24, ((mt->VSyncStart) << 16) | (mt->HSyncStart)); /* preload */
123 u_int32_t linelen = m2info->fbcon.var.xres_virtual * (m2info->fbcon.var.bits_per_pixel >> 3);
124 if (tmp & 0x02000000) {
125 /* field #0 is smaller, so... */
126 mga_outl(0x3C2C, pos); /* field #1 vmemory start */
127 mga_outl(0x3C28, pos + linelen); /* field #0 vmemory start */
129 m2info->interlaced = 1;
131 mga_outl(0x3C28, pos); /* vmemory start */
132 m2info->interlaced = 0;
134 mga_outl(0x3C40, linelen);
136 mga_outl(0x3C4C, datactl); /* data control */
137 if (tmp & 0x02000000) {
140 mga_outl(0x3C10, tmp & ~0x02000000);
141 for (i = 0; i < 2; i++) {
143 unsigned int lastl = 0;
145 while ((nl = mga_inl(0x3C48) & 0xFFF) >= lastl) {
150 mga_outl(0x3C10, tmp);
151 minfo->hw.crtc2.ctl = tmp;
153 tmp = mt->VDisplay << 16; /* line compare */
154 if (mt->sync & FB_SYNC_HOR_HIGH_ACT)
156 if (mt->sync & FB_SYNC_VERT_HIGH_ACT)
158 mga_outl(0x3C44, tmp);
161 static void matroxfb_dh_disable(struct matroxfb_dh_fb_info* m2info) {
162 struct matrox_fb_info *minfo = m2info->primary_dev;
164 mga_outl(0x3C10, 0x00000004); /* disable CRTC2, CRTC1->DAC1, PLL as clock source */
165 minfo->hw.crtc2.ctl = 0x00000004;
168 static void matroxfb_dh_pan_var(struct matroxfb_dh_fb_info* m2info,
169 struct fb_var_screeninfo* var) {
171 unsigned int linelen;
172 unsigned int pixelsize;
173 struct matrox_fb_info *minfo = m2info->primary_dev;
175 m2info->fbcon.var.xoffset = var->xoffset;
176 m2info->fbcon.var.yoffset = var->yoffset;
177 pixelsize = m2info->fbcon.var.bits_per_pixel >> 3;
178 linelen = m2info->fbcon.var.xres_virtual * pixelsize;
179 pos = m2info->fbcon.var.yoffset * linelen + m2info->fbcon.var.xoffset * pixelsize;
180 pos += m2info->video.offbase;
181 if (m2info->interlaced) {
182 mga_outl(0x3C2C, pos);
183 mga_outl(0x3C28, pos + linelen);
185 mga_outl(0x3C28, pos);
189 static int matroxfb_dh_decode_var(struct matroxfb_dh_fb_info* m2info,
190 struct fb_var_screeninfo* var,
196 unsigned int vramlen;
198 switch (var->bits_per_pixel) {
199 case 16: mask = 0x1F;
201 case 32: mask = 0x0F;
203 default: return -EINVAL;
205 vramlen = m2info->video.len_usable;
206 if (var->yres_virtual < var->yres)
207 var->yres_virtual = var->yres;
208 if (var->xres_virtual < var->xres)
209 var->xres_virtual = var->xres;
210 var->xres_virtual = (var->xres_virtual + mask) & ~mask;
211 if (var->yres_virtual > 32767)
213 memlen = var->xres_virtual * var->yres_virtual * (var->bits_per_pixel >> 3);
214 if (memlen > vramlen)
216 if (var->xoffset + var->xres > var->xres_virtual)
217 var->xoffset = var->xres_virtual - var->xres;
218 if (var->yoffset + var->yres > var->yres_virtual)
219 var->yoffset = var->yres_virtual - var->yres;
222 var->left_margin &= ~7;
223 var->right_margin &= ~7;
224 var->hsync_len &= ~7;
226 *mode = var->bits_per_pixel;
227 if (var->bits_per_pixel == 16) {
228 if (var->green.length == 5) {
229 var->red.offset = 10;
231 var->green.offset = 5;
232 var->green.length = 5;
233 var->blue.offset = 0;
234 var->blue.length = 5;
235 var->transp.offset = 15;
236 var->transp.length = 1;
239 var->red.offset = 11;
241 var->green.offset = 5;
242 var->green.length = 6;
243 var->blue.offset = 0;
244 var->blue.length = 5;
245 var->transp.offset = 0;
246 var->transp.length = 0;
249 var->red.offset = 16;
251 var->green.offset = 8;
252 var->green.length = 8;
253 var->blue.offset = 0;
254 var->blue.length = 8;
255 var->transp.offset = 24;
256 var->transp.length = 8;
258 *visual = FB_VISUAL_TRUECOLOR;
259 *video_cmap_len = 16;
263 static int matroxfb_dh_open(struct fb_info* info, int user) {
264 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
265 struct matrox_fb_info *minfo = m2info->primary_dev;
273 err = minfo->fbops.fb_open(&minfo->fbcon, user);
282 static int matroxfb_dh_release(struct fb_info* info, int user) {
283 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
285 struct matrox_fb_info *minfo = m2info->primary_dev;
288 err = minfo->fbops.fb_release(&minfo->fbcon, user);
295 * This function is called before the register_framebuffer so
296 * no locking is needed.
298 static void matroxfb_dh_init_fix(struct matroxfb_dh_fb_info *m2info)
300 struct fb_fix_screeninfo *fix = &m2info->fbcon.fix;
302 strcpy(fix->id, "MATROX DH");
304 fix->smem_start = m2info->video.base;
305 fix->smem_len = m2info->video.len_usable;
308 fix->xpanstep = 8; /* TBD */
309 fix->mmio_start = m2info->mmio.base;
310 fix->mmio_len = m2info->mmio.len;
311 fix->accel = 0; /* no accel... */
314 static int matroxfb_dh_check_var(struct fb_var_screeninfo* var, struct fb_info* info) {
315 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
320 return matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode);
324 static int matroxfb_dh_set_par(struct fb_info* info) {
325 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
330 struct fb_var_screeninfo* var = &info->var;
331 struct matrox_fb_info *minfo = m2info->primary_dev;
333 if ((err = matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode)) != 0)
337 m2info->fbcon.screen_base = vaddr_va(m2info->video.vbase);
338 m2info->fbcon.fix.visual = visual;
339 m2info->fbcon.fix.type = FB_TYPE_PACKED_PIXELS;
340 m2info->fbcon.fix.type_aux = 0;
341 m2info->fbcon.fix.line_length = (var->xres_virtual * var->bits_per_pixel) >> 3;
344 struct my_timming mt;
349 matroxfb_var2my(&m2info->fbcon.var, &mt);
350 mt.crtc = MATROXFB_SRC_CRTC2;
354 pos = (m2info->fbcon.var.yoffset * m2info->fbcon.var.xres_virtual + m2info->fbcon.var.xoffset) * m2info->fbcon.var.bits_per_pixel >> 3;
355 pos += m2info->video.offbase;
357 down_read(&minfo->altout.lock);
358 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
359 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) {
361 if (minfo->outputs[out].output->compute) {
362 minfo->outputs[out].output->compute(minfo->outputs[out].data, &mt);
366 minfo->crtc2.pixclock = mt.pixclock;
367 minfo->crtc2.mnp = mt.mnp;
368 up_read(&minfo->altout.lock);
370 matroxfb_dh_restore(m2info, &mt, mode, pos);
372 matroxfb_dh_disable(m2info);
374 DAC1064_global_init(minfo);
375 DAC1064_global_restore(minfo);
376 down_read(&minfo->altout.lock);
377 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
378 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2 &&
379 minfo->outputs[out].output->program) {
380 minfo->outputs[out].output->program(minfo->outputs[out].data);
383 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
384 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2 &&
385 minfo->outputs[out].output->start) {
386 minfo->outputs[out].output->start(minfo->outputs[out].data);
389 up_read(&minfo->altout.lock);
391 m2info->initialized = 1;
396 static int matroxfb_dh_pan_display(struct fb_var_screeninfo* var, struct fb_info* info) {
397 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
398 matroxfb_dh_pan_var(m2info, var);
403 static int matroxfb_dh_get_vblank(const struct matroxfb_dh_fb_info* m2info, struct fb_vblank* vblank) {
404 struct matrox_fb_info *minfo = m2info->primary_dev;
406 matroxfb_enable_irq(minfo, 0);
407 memset(vblank, 0, sizeof(*vblank));
408 vblank->flags = FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VBLANK;
409 /* mask out reserved bits + field number (odd/even) */
410 vblank->vcount = mga_inl(0x3C48) & 0x000007FF;
411 /* compatibility stuff */
412 if (vblank->vcount >= m2info->fbcon.var.yres)
413 vblank->flags |= FB_VBLANK_VBLANKING;
414 if (test_bit(0, &minfo->irq_flags)) {
415 vblank->flags |= FB_VBLANK_HAVE_COUNT;
416 /* Only one writer, aligned int value...
417 it should work without lock and without atomic_t */
418 vblank->count = minfo->crtc2.vsync.cnt;
423 static int matroxfb_dh_ioctl(struct fb_info *info,
427 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
428 struct matrox_fb_info *minfo = m2info->primary_dev;
435 struct fb_vblank vblank;
438 err = matroxfb_dh_get_vblank(m2info, &vblank);
441 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))
445 case FBIO_WAITFORVSYNC:
449 if (get_user(crt, (u_int32_t __user *)arg))
454 return matroxfb_wait_for_sync(minfo, 1);
456 case MATROXFB_SET_OUTPUT_MODE:
457 case MATROXFB_GET_OUTPUT_MODE:
458 case MATROXFB_GET_ALL_OUTPUTS:
460 return minfo->fbcon.fbops->fb_ioctl(&minfo->fbcon, cmd, arg);
462 case MATROXFB_SET_OUTPUT_CONNECTION:
468 if (get_user(tmp, (u_int32_t __user *)arg))
470 for (out = 0; out < 32; out++) {
471 if (tmp & (1 << out)) {
472 if (out >= MATROXFB_MAX_OUTPUTS)
474 if (!minfo->outputs[out].output)
476 switch (minfo->outputs[out].src) {
477 case MATROXFB_SRC_NONE:
478 case MATROXFB_SRC_CRTC2:
485 if (minfo->devflags.panellink) {
486 if (tmp & MATROXFB_OUTPUT_CONN_DFP)
488 if ((minfo->outputs[2].src == MATROXFB_SRC_CRTC1) && tmp)
492 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
493 if (tmp & (1 << out)) {
494 if (minfo->outputs[out].src != MATROXFB_SRC_CRTC2) {
496 minfo->outputs[out].src = MATROXFB_SRC_CRTC2;
498 } else if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) {
500 minfo->outputs[out].src = MATROXFB_SRC_NONE;
505 matroxfb_dh_set_par(info);
508 case MATROXFB_GET_OUTPUT_CONNECTION:
513 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
514 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) {
518 if (put_user(conn, (u_int32_t __user *)arg))
522 case MATROXFB_GET_AVAILABLE_OUTPUTS:
527 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
528 if (minfo->outputs[out].output) {
529 switch (minfo->outputs[out].src) {
530 case MATROXFB_SRC_NONE:
531 case MATROXFB_SRC_CRTC2:
537 if (minfo->devflags.panellink) {
538 tmp &= ~MATROXFB_OUTPUT_CONN_DFP;
539 if (minfo->outputs[2].src == MATROXFB_SRC_CRTC1) {
543 if (put_user(tmp, (u_int32_t __user *)arg))
552 static int matroxfb_dh_blank(int blank, struct fb_info* info) {
553 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))
561 /* do something... */
566 static const struct fb_ops matroxfb_dh_ops = {
567 .owner = THIS_MODULE,
568 .fb_open = matroxfb_dh_open,
569 .fb_release = matroxfb_dh_release,
570 .fb_check_var = matroxfb_dh_check_var,
571 .fb_set_par = matroxfb_dh_set_par,
572 .fb_setcolreg = matroxfb_dh_setcolreg,
573 .fb_pan_display =matroxfb_dh_pan_display,
574 .fb_blank = matroxfb_dh_blank,
575 .fb_ioctl = matroxfb_dh_ioctl,
576 .fb_fillrect = cfb_fillrect,
577 .fb_copyarea = cfb_copyarea,
578 .fb_imageblit = cfb_imageblit,
581 static struct fb_var_screeninfo matroxfb_dh_defined = {
582 640,480,640,480,/* W,H, virtual W,H */
592 -1,-1, /* display size */
594 39721L,48L,16L,33L,10L,
595 96L,2,0, /* no sync info */
596 FB_VMODE_NONINTERLACED,
599 static int matroxfb_dh_regit(const struct matrox_fb_info *minfo,
600 struct matroxfb_dh_fb_info *m2info)
602 #define minfo (m2info->primary_dev)
605 m2info->fbcon.fbops = &matroxfb_dh_ops;
606 m2info->fbcon.flags = FBINFO_FLAG_DEFAULT;
607 m2info->fbcon.flags |= FBINFO_HWACCEL_XPAN |
609 m2info->fbcon.pseudo_palette = m2info->cmap;
610 fb_alloc_cmap(&m2info->fbcon.cmap, 256, 1);
616 mem &= ~0x00000FFF; /* PAGE_MASK? */
617 if (minfo->video.len_usable + mem <= minfo->video.len)
618 m2info->video.offbase = minfo->video.len - mem;
619 else if (minfo->video.len < mem) {
621 } else { /* check yres on first head... */
622 m2info->video.borrowed = mem;
623 minfo->video.len_usable -= mem;
624 m2info->video.offbase = minfo->video.len_usable;
626 m2info->video.base = minfo->video.base + m2info->video.offbase;
627 m2info->video.len = m2info->video.len_usable = m2info->video.len_maximum = mem;
628 m2info->video.vbase.vaddr = vaddr_va(minfo->video.vbase) + m2info->video.offbase;
629 m2info->mmio.base = minfo->mmio.base;
630 m2info->mmio.vbase = minfo->mmio.vbase;
631 m2info->mmio.len = minfo->mmio.len;
633 matroxfb_dh_init_fix(m2info);
634 if (register_framebuffer(&m2info->fbcon)) {
637 if (!m2info->initialized)
638 fb_set_var(&m2info->fbcon, &matroxfb_dh_defined);
639 down_write(&minfo->crtc2.lock);
640 oldcrtc2 = minfo->crtc2.info;
641 minfo->crtc2.info = m2info;
642 up_write(&minfo->crtc2.lock);
644 printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 already present: %p\n",
651 /* ************************** */
653 static int matroxfb_dh_registerfb(struct matroxfb_dh_fb_info* m2info) {
654 #define minfo (m2info->primary_dev)
655 if (matroxfb_dh_regit(minfo, m2info)) {
656 printk(KERN_ERR "matroxfb_crtc2: secondary head failed to register\n");
659 printk(KERN_INFO "matroxfb_crtc2: secondary head of fb%u was registered as fb%u\n",
660 minfo->fbcon.node, m2info->fbcon.node);
661 m2info->fbcon_registered = 1;
666 static void matroxfb_dh_deregisterfb(struct matroxfb_dh_fb_info* m2info) {
667 #define minfo (m2info->primary_dev)
668 if (m2info->fbcon_registered) {
670 struct matroxfb_dh_fb_info* crtc2;
672 down_write(&minfo->crtc2.lock);
673 crtc2 = minfo->crtc2.info;
675 minfo->crtc2.info = NULL;
676 up_write(&minfo->crtc2.lock);
677 if (crtc2 != m2info) {
678 printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 mismatch at unload: %p != %p\n",
680 printk(KERN_ERR "matroxfb_crtc2: Expect kernel crash after module unload.\n");
683 id = m2info->fbcon.node;
684 unregister_framebuffer(&m2info->fbcon);
685 /* return memory back to primary head */
686 minfo->video.len_usable += m2info->video.borrowed;
687 printk(KERN_INFO "matroxfb_crtc2: fb%u unregistered\n", id);
688 m2info->fbcon_registered = 0;
693 static void* matroxfb_crtc2_probe(struct matrox_fb_info* minfo) {
694 struct matroxfb_dh_fb_info* m2info;
696 /* hardware is CRTC2 incapable... */
697 if (!minfo->devflags.crtc2)
699 m2info = kzalloc(sizeof(*m2info), GFP_KERNEL);
703 m2info->primary_dev = minfo;
704 if (matroxfb_dh_registerfb(m2info)) {
706 printk(KERN_ERR "matroxfb_crtc2: CRTC2 framebuffer failed to register\n");
712 static void matroxfb_crtc2_remove(struct matrox_fb_info* minfo, void* crtc2) {
713 matroxfb_dh_deregisterfb(crtc2);
717 static struct matroxfb_driver crtc2 = {
718 .name = "Matrox G400 CRTC2",
719 .probe = matroxfb_crtc2_probe,
720 .remove = matroxfb_crtc2_remove };
722 static int matroxfb_crtc2_init(void) {
723 if (fb_get_options("matrox_crtc2fb", NULL))
726 matroxfb_register_driver(&crtc2);
730 static void matroxfb_crtc2_exit(void) {
731 matroxfb_unregister_driver(&crtc2);
734 MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
735 MODULE_DESCRIPTION("Matrox G400 CRTC2 driver");
736 MODULE_LICENSE("GPL");
737 module_init(matroxfb_crtc2_init);
738 module_exit(matroxfb_crtc2_exit);
739 /* we do not have __setup() yet */