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1// SPDX-License-Identifier: GPL-2.0-only2/*3 *4 * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450.5 *6 * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>7 *8 * Portions Copyright (c) 2001 Matrox Graphics Inc.9 *10 * Version: 1.65 2002/08/1411 *12 */13 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>21 22/* **************************************************** */23 24static int mem = 8192;25 26module_param(mem, int, 0);27MODULE_PARM_DESC(mem, "Memory size reserved for dualhead (default=8MB)");28 29/* **************************************************** */30 31static int matroxfb_dh_setcolreg(unsigned regno, unsigned red, unsigned green,32 unsigned blue, unsigned transp, struct fb_info* info) {33 u_int32_t col;34#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))35 36 if (regno >= 16)37 return 1;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;41 }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);46 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);51 52 switch (m2info->fbcon.var.bits_per_pixel) {53 case 16:54 m2info->cmap[regno] = col | (col << 16);55 break;56 case 32:57 m2info->cmap[regno] = col;58 break;59 }60 return 0;61#undef m2info62}63 64static void matroxfb_dh_restore(struct matroxfb_dh_fb_info* m2info,65 struct my_timming* mt,66 int mode,67 unsigned int pos) {68 u_int32_t tmp;69 u_int32_t datactl;70 struct matrox_fb_info *minfo = m2info->primary_dev;71 72 switch (mode) {73 case 15:74 tmp = 0x00200000;75 break;76 case 16:77 tmp = 0x00400000;78 break;79/* case 32: */80 default:81 tmp = 0x00800000;82 break;83 }84 tmp |= 0x00000001; /* enable CRTC2 */85 datactl = 0;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 */92 }93 } else {94 tmp |= 0x00000002; /* source from VDOCLK */95 tmp |= 0xC0000000; /* enable vvidrst & hvidrst */96 /* MGA TVO is our clock source */97 }98 } else if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) {99 tmp |= 0x00000004; /* source from pixclock */100 /* PIXPLL is our clock source */101 }102 if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) {103 tmp |= 0x00100000; /* connect CRTC2 to DAC */104 }105 if (mt->interlaced) {106 tmp |= 0x02000000; /* interlaced, second field is bigger, as G450 apparently ignores it */107 mt->VDisplay >>= 1;108 mt->VSyncStart >>= 1;109 mt->VSyncEnd >>= 1;110 mt->VTotal >>= 1;111 }112 if ((mt->HTotal & 7) == 2) {113 datactl |= 0x00000010;114 mt->HTotal &= ~7;115 }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 */122 {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 */128 linelen <<= 1;129 m2info->interlaced = 1;130 } else {131 mga_outl(0x3C28, pos); /* vmemory start */132 m2info->interlaced = 0;133 }134 mga_outl(0x3C40, linelen);135 }136 mga_outl(0x3C4C, datactl); /* data control */137 if (tmp & 0x02000000) {138 int i;139 140 mga_outl(0x3C10, tmp & ~0x02000000);141 for (i = 0; i < 2; i++) {142 unsigned int nl;143 unsigned int lastl = 0;144 145 while ((nl = mga_inl(0x3C48) & 0xFFF) >= lastl) {146 lastl = nl;147 }148 }149 }150 mga_outl(0x3C10, tmp);151 minfo->hw.crtc2.ctl = tmp;152 153 tmp = mt->VDisplay << 16; /* line compare */154 if (mt->sync & FB_SYNC_HOR_HIGH_ACT)155 tmp |= 0x00000100;156 if (mt->sync & FB_SYNC_VERT_HIGH_ACT)157 tmp |= 0x00000200;158 mga_outl(0x3C44, tmp);159}160 161static void matroxfb_dh_disable(struct matroxfb_dh_fb_info* m2info) {162 struct matrox_fb_info *minfo = m2info->primary_dev;163 164 mga_outl(0x3C10, 0x00000004); /* disable CRTC2, CRTC1->DAC1, PLL as clock source */165 minfo->hw.crtc2.ctl = 0x00000004;166}167 168static void matroxfb_dh_pan_var(struct matroxfb_dh_fb_info* m2info,169 struct fb_var_screeninfo* var) {170 unsigned int pos;171 unsigned int linelen;172 unsigned int pixelsize;173 struct matrox_fb_info *minfo = m2info->primary_dev;174 175 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);184 } else {185 mga_outl(0x3C28, pos);186 }187}188 189static int matroxfb_dh_decode_var(struct matroxfb_dh_fb_info* m2info,190 struct fb_var_screeninfo* var,191 int *visual,192 int *video_cmap_len,193 int *mode) {194 unsigned int mask;195 unsigned int memlen;196 unsigned int vramlen;197 198 switch (var->bits_per_pixel) {199 case 16: mask = 0x1F;200 break;201 case 32: mask = 0x0F;202 break;203 default: return -EINVAL;204 }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)212 return -EINVAL;213 memlen = var->xres_virtual * var->yres_virtual * (var->bits_per_pixel >> 3);214 if (memlen > vramlen)215 return -EINVAL;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;220 221 var->xres &= ~7;222 var->left_margin &= ~7;223 var->right_margin &= ~7;224 var->hsync_len &= ~7;225 226 *mode = var->bits_per_pixel;227 if (var->bits_per_pixel == 16) {228 if (var->green.length == 5) {229 var->red.offset = 10;230 var->red.length = 5;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;237 *mode = 15;238 } else {239 var->red.offset = 11;240 var->red.length = 5;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;247 }248 } else {249 var->red.offset = 16;250 var->red.length = 8;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;257 }258 *visual = FB_VISUAL_TRUECOLOR;259 *video_cmap_len = 16;260 return 0;261}262 263static 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;266 267 if (minfo) {268 int err;269 270 if (minfo->dead) {271 return -ENXIO;272 }273 err = minfo->fbops.fb_open(&minfo->fbcon, user);274 if (err) {275 return err;276 }277 }278 return 0;279#undef m2info280}281 282static int matroxfb_dh_release(struct fb_info* info, int user) {283#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))284 int err = 0;285 struct matrox_fb_info *minfo = m2info->primary_dev;286 287 if (minfo) {288 err = minfo->fbops.fb_release(&minfo->fbcon, user);289 }290 return err;291#undef m2info292}293 294/*295 * This function is called before the register_framebuffer so296 * no locking is needed.297 */298static void matroxfb_dh_init_fix(struct matroxfb_dh_fb_info *m2info)299{300 struct fb_fix_screeninfo *fix = &m2info->fbcon.fix;301 302 strcpy(fix->id, "MATROX DH");303 304 fix->smem_start = m2info->video.base;305 fix->smem_len = m2info->video.len_usable;306 fix->ypanstep = 1;307 fix->ywrapstep = 0;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... */312}313 314static 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))316 int visual;317 int cmap_len;318 int mode;319 320 return matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode);321#undef m2info322}323 324static int matroxfb_dh_set_par(struct fb_info* info) {325#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))326 int visual;327 int cmap_len;328 int mode;329 int err;330 struct fb_var_screeninfo* var = &info->var;331 struct matrox_fb_info *minfo = m2info->primary_dev;332 333 if ((err = matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode)) != 0)334 return err;335 /* cmap */336 {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;342 }343 {344 struct my_timming mt;345 unsigned int pos;346 int out;347 int cnt;348 349 matroxfb_var2my(&m2info->fbcon.var, &mt);350 mt.crtc = MATROXFB_SRC_CRTC2;351 /* CRTC2 delay */352 mt.delay = 34;353 354 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;356 cnt = 0;357 down_read(&minfo->altout.lock);358 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {359 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) {360 cnt++;361 if (minfo->outputs[out].output->compute) {362 minfo->outputs[out].output->compute(minfo->outputs[out].data, &mt);363 }364 }365 }366 minfo->crtc2.pixclock = mt.pixclock;367 minfo->crtc2.mnp = mt.mnp;368 up_read(&minfo->altout.lock);369 if (cnt) {370 matroxfb_dh_restore(m2info, &mt, mode, pos);371 } else {372 matroxfb_dh_disable(m2info);373 }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);381 }382 }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);387 }388 }389 up_read(&minfo->altout.lock);390 }391 m2info->initialized = 1;392 return 0;393#undef m2info394}395 396static 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);399 return 0;400#undef m2info401}402 403static 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;405 406 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;419 }420 return 0;421}422 423static int matroxfb_dh_ioctl(struct fb_info *info,424 unsigned int cmd,425 unsigned long arg)426{427#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))428 struct matrox_fb_info *minfo = m2info->primary_dev;429 430 DBG(__func__)431 432 switch (cmd) {433 case FBIOGET_VBLANK:434 {435 struct fb_vblank vblank;436 int err;437 438 err = matroxfb_dh_get_vblank(m2info, &vblank);439 if (err)440 return err;441 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank)))442 return -EFAULT;443 return 0;444 }445 case FBIO_WAITFORVSYNC:446 {447 u_int32_t crt;448 449 if (get_user(crt, (u_int32_t __user *)arg))450 return -EFAULT;451 452 if (crt != 0)453 return -ENODEV;454 return matroxfb_wait_for_sync(minfo, 1);455 }456 case MATROXFB_SET_OUTPUT_MODE:457 case MATROXFB_GET_OUTPUT_MODE:458 case MATROXFB_GET_ALL_OUTPUTS:459 {460 return minfo->fbcon.fbops->fb_ioctl(&minfo->fbcon, cmd, arg);461 }462 case MATROXFB_SET_OUTPUT_CONNECTION:463 {464 u_int32_t tmp;465 int out;466 int changes;467 468 if (get_user(tmp, (u_int32_t __user *)arg))469 return -EFAULT;470 for (out = 0; out < 32; out++) {471 if (tmp & (1 << out)) {472 if (out >= MATROXFB_MAX_OUTPUTS)473 return -ENXIO;474 if (!minfo->outputs[out].output)475 return -ENXIO;476 switch (minfo->outputs[out].src) {477 case MATROXFB_SRC_NONE:478 case MATROXFB_SRC_CRTC2:479 break;480 default:481 return -EBUSY;482 }483 }484 }485 if (minfo->devflags.panellink) {486 if (tmp & MATROXFB_OUTPUT_CONN_DFP)487 return -EINVAL;488 if ((minfo->outputs[2].src == MATROXFB_SRC_CRTC1) && tmp)489 return -EBUSY;490 }491 changes = 0;492 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {493 if (tmp & (1 << out)) {494 if (minfo->outputs[out].src != MATROXFB_SRC_CRTC2) {495 changes = 1;496 minfo->outputs[out].src = MATROXFB_SRC_CRTC2;497 }498 } else if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) {499 changes = 1;500 minfo->outputs[out].src = MATROXFB_SRC_NONE;501 }502 }503 if (!changes)504 return 0;505 matroxfb_dh_set_par(info);506 return 0;507 }508 case MATROXFB_GET_OUTPUT_CONNECTION:509 {510 u_int32_t conn = 0;511 int out;512 513 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {514 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) {515 conn |= 1 << out;516 }517 }518 if (put_user(conn, (u_int32_t __user *)arg))519 return -EFAULT;520 return 0;521 }522 case MATROXFB_GET_AVAILABLE_OUTPUTS:523 {524 u_int32_t tmp = 0;525 int out;526 527 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_CRTC2:532 tmp |= 1 << out;533 break;534 }535 }536 }537 if (minfo->devflags.panellink) {538 tmp &= ~MATROXFB_OUTPUT_CONN_DFP;539 if (minfo->outputs[2].src == MATROXFB_SRC_CRTC1) {540 tmp = 0;541 }542 }543 if (put_user(tmp, (u_int32_t __user *)arg))544 return -EFAULT;545 return 0;546 }547 }548 return -ENOTTY;549#undef m2info550}551 552static int matroxfb_dh_blank(int blank, struct fb_info* info) {553#define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon))554 switch (blank) {555 case 1:556 case 2:557 case 3:558 case 4:559 default:;560 }561 /* do something... */562 return 0;563#undef m2info564}565 566static 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_DEFAULT_IOMEM_OPS,571 .fb_check_var = matroxfb_dh_check_var,572 .fb_set_par = matroxfb_dh_set_par,573 .fb_setcolreg = matroxfb_dh_setcolreg,574 .fb_pan_display =matroxfb_dh_pan_display,575 .fb_blank = matroxfb_dh_blank,576 .fb_ioctl = matroxfb_dh_ioctl,577};578 579static struct fb_var_screeninfo matroxfb_dh_defined = {580 640,480,640,480,/* W,H, virtual W,H */581 0,0, /* offset */582 32, /* depth */583 0, /* gray */584 {0,0,0}, /* R */585 {0,0,0}, /* G */586 {0,0,0}, /* B */587 {0,0,0}, /* alpha */588 0, /* nonstd */589 FB_ACTIVATE_NOW,590 -1,-1, /* display size */591 0, /* accel flags */592 39721L,48L,16L,33L,10L,593 96L,2,0, /* no sync info */594 FB_VMODE_NONINTERLACED,595};596 597static int matroxfb_dh_regit(const struct matrox_fb_info *minfo,598 struct matroxfb_dh_fb_info *m2info)599{600#define minfo (m2info->primary_dev)601 void* oldcrtc2;602 603 m2info->fbcon.fbops = &matroxfb_dh_ops;604 m2info->fbcon.flags = FBINFO_HWACCEL_XPAN |605 FBINFO_HWACCEL_YPAN;606 m2info->fbcon.pseudo_palette = m2info->cmap;607 fb_alloc_cmap(&m2info->fbcon.cmap, 256, 1);608 609 if (mem < 64)610 mem *= 1024;611 if (mem < 64*1024)612 mem *= 1024;613 mem &= ~0x00000FFF; /* PAGE_MASK? */614 if (minfo->video.len_usable + mem <= minfo->video.len)615 m2info->video.offbase = minfo->video.len - mem;616 else if (minfo->video.len < mem) {617 return -ENOMEM;618 } else { /* check yres on first head... */619 m2info->video.borrowed = mem;620 minfo->video.len_usable -= mem;621 m2info->video.offbase = minfo->video.len_usable;622 }623 m2info->video.base = minfo->video.base + m2info->video.offbase;624 m2info->video.len = m2info->video.len_usable = m2info->video.len_maximum = mem;625 m2info->video.vbase.vaddr = vaddr_va(minfo->video.vbase) + m2info->video.offbase;626 m2info->mmio.base = minfo->mmio.base;627 m2info->mmio.vbase = minfo->mmio.vbase;628 m2info->mmio.len = minfo->mmio.len;629 630 matroxfb_dh_init_fix(m2info);631 if (register_framebuffer(&m2info->fbcon)) {632 return -ENXIO;633 }634 if (!m2info->initialized)635 fb_set_var(&m2info->fbcon, &matroxfb_dh_defined);636 down_write(&minfo->crtc2.lock);637 oldcrtc2 = minfo->crtc2.info;638 minfo->crtc2.info = m2info;639 up_write(&minfo->crtc2.lock);640 if (oldcrtc2) {641 printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 already present: %p\n",642 oldcrtc2);643 }644 return 0;645#undef minfo646}647 648/* ************************** */649 650static int matroxfb_dh_registerfb(struct matroxfb_dh_fb_info* m2info) {651#define minfo (m2info->primary_dev)652 if (matroxfb_dh_regit(minfo, m2info)) {653 printk(KERN_ERR "matroxfb_crtc2: secondary head failed to register\n");654 return -1;655 }656 printk(KERN_INFO "matroxfb_crtc2: secondary head of fb%u was registered as fb%u\n",657 minfo->fbcon.node, m2info->fbcon.node);658 m2info->fbcon_registered = 1;659 return 0;660#undef minfo661}662 663static void matroxfb_dh_deregisterfb(struct matroxfb_dh_fb_info* m2info) {664#define minfo (m2info->primary_dev)665 if (m2info->fbcon_registered) {666 int id;667 struct matroxfb_dh_fb_info* crtc2;668 669 down_write(&minfo->crtc2.lock);670 crtc2 = minfo->crtc2.info;671 if (crtc2 == m2info)672 minfo->crtc2.info = NULL;673 up_write(&minfo->crtc2.lock);674 if (crtc2 != m2info) {675 printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 mismatch at unload: %p != %p\n",676 crtc2, m2info);677 printk(KERN_ERR "matroxfb_crtc2: Expect kernel crash after module unload.\n");678 return;679 }680 id = m2info->fbcon.node;681 unregister_framebuffer(&m2info->fbcon);682 /* return memory back to primary head */683 minfo->video.len_usable += m2info->video.borrowed;684 printk(KERN_INFO "matroxfb_crtc2: fb%u unregistered\n", id);685 m2info->fbcon_registered = 0;686 }687#undef minfo688}689 690static void* matroxfb_crtc2_probe(struct matrox_fb_info* minfo) {691 struct matroxfb_dh_fb_info* m2info;692 693 /* hardware is CRTC2 incapable... */694 if (!minfo->devflags.crtc2)695 return NULL;696 m2info = kzalloc(sizeof(*m2info), GFP_KERNEL);697 if (!m2info)698 return NULL;699 700 m2info->primary_dev = minfo;701 if (matroxfb_dh_registerfb(m2info)) {702 kfree(m2info);703 printk(KERN_ERR "matroxfb_crtc2: CRTC2 framebuffer failed to register\n");704 return NULL;705 }706 return m2info;707}708 709static void matroxfb_crtc2_remove(struct matrox_fb_info* minfo, void* crtc2) {710 matroxfb_dh_deregisterfb(crtc2);711 kfree(crtc2);712}713 714static struct matroxfb_driver crtc2 = {715 .name = "Matrox G400 CRTC2",716 .probe = matroxfb_crtc2_probe,717 .remove = matroxfb_crtc2_remove };718 719static int matroxfb_crtc2_init(void) {720 if (fb_get_options("matrox_crtc2fb", NULL))721 return -ENODEV;722 723 matroxfb_register_driver(&crtc2);724 return 0;725}726 727static void matroxfb_crtc2_exit(void) {728 matroxfb_unregister_driver(&crtc2);729}730 731MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");732MODULE_DESCRIPTION("Matrox G400 CRTC2 driver");733MODULE_LICENSE("GPL");734module_init(matroxfb_crtc2_init);735module_exit(matroxfb_crtc2_exit);736/* we do not have __setup() yet */737