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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Geode LX framebuffer driver.4 *5 * Copyright (C) 2007 Advanced Micro Devices, Inc.6 * Built from gxfb (which is Copyright (C) 2006 Arcom Control Systems Ltd.)7 */8 9#include <linux/aperture.h>10#include <linux/module.h>11#include <linux/kernel.h>12#include <linux/errno.h>13#include <linux/string.h>14#include <linux/console.h>15#include <linux/mm.h>16#include <linux/suspend.h>17#include <linux/delay.h>18#include <linux/fb.h>19#include <linux/init.h>20#include <linux/pci.h>21#include <linux/uaccess.h>22 23#include <asm/olpc.h>24 25#include "lxfb.h"26 27static char *mode_option;28static int noclear, nopanel, nocrt;29static int vram;30static int vt_switch;31 32/* Most of these modes are sorted in ascending order, but33 * since the first entry in this table is the "default" mode,34 * we try to make it something sane - 640x480-60 is sane35 */36 37static struct fb_videomode geode_modedb[] = {38 /* 640x480-60 */39 { NULL, 60, 640, 480, 39682, 48, 8, 25, 2, 88, 2,40 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,41 FB_VMODE_NONINTERLACED, 0 },42 /* 640x400-70 */43 { NULL, 70, 640, 400, 39770, 40, 8, 28, 5, 96, 2,44 FB_SYNC_HOR_HIGH_ACT,45 FB_VMODE_NONINTERLACED, 0 },46 /* 640x480-70 */47 { NULL, 70, 640, 480, 35014, 88, 24, 15, 2, 64, 3,48 0, FB_VMODE_NONINTERLACED, 0 },49 /* 640x480-72 */50 { NULL, 72, 640, 480, 32102, 120, 16, 20, 1, 40, 3,51 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,52 FB_VMODE_NONINTERLACED, 0 },53 /* 640x480-75 */54 { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,55 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,56 FB_VMODE_NONINTERLACED, 0 },57 /* 640x480-85 */58 { NULL, 85, 640, 480, 27780, 80, 56, 25, 1, 56, 3,59 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,60 FB_VMODE_NONINTERLACED, 0 },61 /* 640x480-90 */62 { NULL, 90, 640, 480, 26392, 96, 32, 22, 1, 64, 3,63 0, FB_VMODE_NONINTERLACED, 0 },64 /* 640x480-100 */65 { NULL, 100, 640, 480, 23167, 104, 40, 25, 1, 64, 3,66 0, FB_VMODE_NONINTERLACED, 0 },67 /* 640x480-60 */68 { NULL, 60, 640, 480, 39682, 48, 16, 25, 10, 88, 2,69 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,70 FB_VMODE_NONINTERLACED, 0 },71 /* 800x600-56 */72 { NULL, 56, 800, 600, 27901, 128, 24, 22, 1, 72, 2,73 0, FB_VMODE_NONINTERLACED, 0 },74 /* 800x600-60 */75 { NULL, 60, 800, 600, 25131, 72, 32, 23, 1, 136, 4,76 0, FB_VMODE_NONINTERLACED, 0 },77 /* 800x600-70 */78 { NULL, 70, 800, 600, 21873, 120, 40, 21, 4, 80, 3,79 0, FB_VMODE_NONINTERLACED, 0 },80 /* 800x600-72 */81 { NULL, 72, 800, 600, 20052, 64, 56, 23, 37, 120, 6,82 0, FB_VMODE_NONINTERLACED, 0 },83 /* 800x600-75 */84 { NULL, 75, 800, 600, 20202, 160, 16, 21, 1, 80, 3,85 0, FB_VMODE_NONINTERLACED, 0 },86 /* 800x600-85 */87 { NULL, 85, 800, 600, 17790, 152, 32, 27, 1, 64, 3,88 0, FB_VMODE_NONINTERLACED, 0 },89 /* 800x600-90 */90 { NULL, 90, 800, 600, 16648, 128, 40, 28, 1, 88, 3,91 0, FB_VMODE_NONINTERLACED, 0 },92 /* 800x600-100 */93 { NULL, 100, 800, 600, 14667, 136, 48, 27, 1, 88, 3,94 0, FB_VMODE_NONINTERLACED, 0 },95 /* 800x600-60 */96 { NULL, 60, 800, 600, 25131, 88, 40, 23, 1, 128, 4,97 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,98 FB_VMODE_NONINTERLACED, 0 },99 /* 1024x768-60 */100 { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,101 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,102 FB_VMODE_NONINTERLACED, 0 },103 /* 1024x768-70 */104 { NULL, 70, 1024, 768, 13346, 144, 24, 29, 3, 136, 6,105 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,106 FB_VMODE_NONINTERLACED, 0 },107 /* 1024x768-72 */108 { NULL, 72, 1024, 768, 12702, 168, 56, 29, 4, 112, 3,109 0, FB_VMODE_NONINTERLACED, 0 },110 /* 1024x768-75 */111 { NULL, 75, 1024, 768, 12703, 176, 16, 28, 1, 96, 3,112 0, FB_VMODE_NONINTERLACED, 0 },113 /* 1024x768-85 */114 { NULL, 85, 1024, 768, 10581, 208, 48, 36, 1, 96, 3,115 0, FB_VMODE_NONINTERLACED, 0 },116 /* 1024x768-90 */117 { NULL, 90, 1024, 768, 9981, 176, 64, 37, 1, 112, 3,118 0, FB_VMODE_NONINTERLACED, 0 },119 /* 1024x768-100 */120 { NULL, 100, 1024, 768, 8825, 184, 72, 42, 1, 112, 3,121 0, FB_VMODE_NONINTERLACED, 0 },122 /* 1024x768-60 */123 { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,124 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,125 FB_VMODE_NONINTERLACED, 0 },126 /* 1152x864-60 */127 { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,128 0, FB_VMODE_NONINTERLACED, 0 },129 /* 1152x864-70 */130 { NULL, 70, 1152, 864, 10254, 192, 72, 32, 8, 120, 3,131 0, FB_VMODE_NONINTERLACED, 0 },132 /* 1152x864-72 */133 { NULL, 72, 1152, 864, 9866, 200, 72, 33, 7, 128, 3,134 0, FB_VMODE_NONINTERLACED, 0 },135 /* 1152x864-75 */136 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,137 0, FB_VMODE_NONINTERLACED, 0 },138 /* 1152x864-85 */139 { NULL, 85, 1152, 864, 8357, 200, 72, 37, 3, 128, 3,140 0, FB_VMODE_NONINTERLACED, 0 },141 /* 1152x864-90 */142 { NULL, 90, 1152, 864, 7719, 208, 80, 42, 9, 128, 3,143 0, FB_VMODE_NONINTERLACED, 0 },144 /* 1152x864-100 */145 { NULL, 100, 1152, 864, 6947, 208, 80, 48, 3, 128, 3,146 0, FB_VMODE_NONINTERLACED, 0 },147 /* 1152x864-60 */148 { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,149 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,150 FB_VMODE_NONINTERLACED, 0 },151 /* 1280x1024-60 */152 { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,153 0, FB_VMODE_NONINTERLACED, 0 },154 /* 1280x1024-70 */155 { NULL, 70, 1280, 1024, 7719, 224, 88, 38, 6, 136, 3,156 0, FB_VMODE_NONINTERLACED, 0 },157 /* 1280x1024-72 */158 { NULL, 72, 1280, 1024, 7490, 224, 88, 39, 7, 136, 3,159 0, FB_VMODE_NONINTERLACED, 0 },160 /* 1280x1024-75 */161 { NULL, 75, 1280, 1024, 7409, 248, 16, 38, 1, 144, 3,162 0, FB_VMODE_NONINTERLACED, 0 },163 /* 1280x1024-85 */164 { NULL, 85, 1280, 1024, 6351, 224, 64, 44, 1, 160, 3,165 0, FB_VMODE_NONINTERLACED, 0 },166 /* 1280x1024-90 */167 { NULL, 90, 1280, 1024, 5791, 240, 96, 51, 12, 144, 3,168 0, FB_VMODE_NONINTERLACED, 0 },169 /* 1280x1024-100 */170 { NULL, 100, 1280, 1024, 5212, 240, 96, 57, 6, 144, 3,171 0, FB_VMODE_NONINTERLACED, 0 },172 /* 1280x1024-60 */173 { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,174 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,175 FB_VMODE_NONINTERLACED, 0 },176 /* 1600x1200-60 */177 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,178 0, FB_VMODE_NONINTERLACED, 0 },179 /* 1600x1200-70 */180 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,181 0, FB_VMODE_NONINTERLACED, 0 },182 /* 1600x1200-72 */183 { NULL, 72, 1600, 1200, 5053, 288, 112, 47, 13, 176, 3,184 0, FB_VMODE_NONINTERLACED, 0 },185 /* 1600x1200-75 */186 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,187 0, FB_VMODE_NONINTERLACED, 0 },188 /* 1600x1200-85 */189 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,190 0, FB_VMODE_NONINTERLACED, 0 },191 /* 1600x1200-90 */192 { NULL, 90, 1600, 1200, 3981, 304, 128, 60, 1, 176, 3,193 0, FB_VMODE_NONINTERLACED, 0 },194 /* 1600x1200-100 */195 { NULL, 100, 1600, 1200, 3563, 304, 128, 67, 1, 176, 3,196 0, FB_VMODE_NONINTERLACED, 0 },197 /* 1600x1200-60 */198 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,199 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,200 FB_VMODE_NONINTERLACED, 0 },201 /* 1920x1440-60 */202 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 208, 3,203 0, FB_VMODE_NONINTERLACED, 0 },204 /* 1920x1440-70 */205 { NULL, 70, 1920, 1440, 3593, 360, 152, 55, 8, 208, 3,206 0, FB_VMODE_NONINTERLACED, 0 },207 /* 1920x1440-72 */208 { NULL, 72, 1920, 1440, 3472, 360, 152, 68, 4, 208, 3,209 0, FB_VMODE_NONINTERLACED, 0 },210 /* 1920x1440-75 */211 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,212 0, FB_VMODE_NONINTERLACED, 0 },213 /* 1920x1440-85 */214 { NULL, 85, 1920, 1440, 2929, 368, 152, 68, 1, 216, 3,215 0, FB_VMODE_NONINTERLACED, 0 },216};217 218static struct fb_videomode olpc_dcon_modedb[] = {219 /* The only mode the DCON has is 1200x900 */220 { NULL, 50, 1200, 900, 17460, 24, 8, 4, 5, 8, 3,221 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,222 FB_VMODE_NONINTERLACED, 0 }223};224 225static void get_modedb(struct fb_videomode **modedb, unsigned int *size)226{227 if (olpc_has_dcon()) {228 *modedb = (struct fb_videomode *) olpc_dcon_modedb;229 *size = ARRAY_SIZE(olpc_dcon_modedb);230 } else {231 *modedb = (struct fb_videomode *) geode_modedb;232 *size = ARRAY_SIZE(geode_modedb);233 }234}235 236static int lxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)237{238 if (!var->pixclock)239 return -EINVAL;240 241 if (var->xres > 1920 || var->yres > 1440)242 return -EINVAL;243 244 if (var->bits_per_pixel == 32) {245 var->red.offset = 16; var->red.length = 8;246 var->green.offset = 8; var->green.length = 8;247 var->blue.offset = 0; var->blue.length = 8;248 } else if (var->bits_per_pixel == 16) {249 var->red.offset = 11; var->red.length = 5;250 var->green.offset = 5; var->green.length = 6;251 var->blue.offset = 0; var->blue.length = 5;252 } else if (var->bits_per_pixel == 8) {253 var->red.offset = 0; var->red.length = 8;254 var->green.offset = 0; var->green.length = 8;255 var->blue.offset = 0; var->blue.length = 8;256 } else257 return -EINVAL;258 259 var->transp.offset = 0; var->transp.length = 0;260 261 /* Enough video memory? */262 if ((lx_get_pitch(var->xres, var->bits_per_pixel) * var->yres)263 > info->fix.smem_len)264 return -EINVAL;265 266 return 0;267}268 269static int lxfb_set_par(struct fb_info *info)270{271 if (info->var.bits_per_pixel > 8)272 info->fix.visual = FB_VISUAL_TRUECOLOR;273 else274 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;275 276 info->fix.line_length = lx_get_pitch(info->var.xres,277 info->var.bits_per_pixel);278 279 lx_set_mode(info);280 return 0;281}282 283static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)284{285 chan &= 0xffff;286 chan >>= 16 - bf->length;287 return chan << bf->offset;288}289 290static int lxfb_setcolreg(unsigned regno, unsigned red, unsigned green,291 unsigned blue, unsigned transp,292 struct fb_info *info)293{294 if (info->var.grayscale) {295 /* grayscale = 0.30*R + 0.59*G + 0.11*B */296 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;297 }298 299 /* Truecolor has hardware independent palette */300 if (info->fix.visual == FB_VISUAL_TRUECOLOR) {301 u32 *pal = info->pseudo_palette;302 u32 v;303 304 if (regno >= 16)305 return -EINVAL;306 307 v = chan_to_field(red, &info->var.red);308 v |= chan_to_field(green, &info->var.green);309 v |= chan_to_field(blue, &info->var.blue);310 311 pal[regno] = v;312 } else {313 if (regno >= 256)314 return -EINVAL;315 316 lx_set_palette_reg(info, regno, red, green, blue);317 }318 319 return 0;320}321 322static int lxfb_blank(int blank_mode, struct fb_info *info)323{324 return lx_blank_display(info, blank_mode);325}326 327 328static int lxfb_map_video_memory(struct fb_info *info, struct pci_dev *dev)329{330 struct lxfb_par *par = info->par;331 int ret;332 333 ret = pci_enable_device(dev);334 335 if (ret)336 return ret;337 338 ret = pci_request_region(dev, 0, "lxfb-framebuffer");339 340 if (ret)341 return ret;342 343 ret = pci_request_region(dev, 1, "lxfb-gp");344 345 if (ret)346 return ret;347 348 ret = pci_request_region(dev, 2, "lxfb-vg");349 350 if (ret)351 return ret;352 353 ret = pci_request_region(dev, 3, "lxfb-vp");354 355 if (ret)356 return ret;357 358 info->fix.smem_start = pci_resource_start(dev, 0);359 info->fix.smem_len = vram ? vram : lx_framebuffer_size();360 361 info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);362 363 ret = -ENOMEM;364 365 if (info->screen_base == NULL)366 return ret;367 368 par->gp_regs = pci_ioremap_bar(dev, 1);369 370 if (par->gp_regs == NULL)371 return ret;372 373 par->dc_regs = pci_ioremap_bar(dev, 2);374 375 if (par->dc_regs == NULL)376 return ret;377 378 par->vp_regs = pci_ioremap_bar(dev, 3);379 380 if (par->vp_regs == NULL)381 return ret;382 383 write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);384 write_dc(par, DC_GLIU0_MEM_OFFSET, info->fix.smem_start & 0xFF000000);385 write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);386 387 dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n",388 info->fix.smem_len / 1024, info->fix.smem_start);389 390 return 0;391}392 393static const struct fb_ops lxfb_ops = {394 .owner = THIS_MODULE,395 FB_DEFAULT_IOMEM_OPS,396 .fb_check_var = lxfb_check_var,397 .fb_set_par = lxfb_set_par,398 .fb_setcolreg = lxfb_setcolreg,399 .fb_blank = lxfb_blank,400};401 402static struct fb_info *lxfb_init_fbinfo(struct device *dev)403{404 struct lxfb_par *par;405 struct fb_info *info;406 407 /* Alloc enough space for the pseudo palette. */408 info = framebuffer_alloc(sizeof(struct lxfb_par) + sizeof(u32) * 16,409 dev);410 if (!info)411 return NULL;412 413 par = info->par;414 415 strcpy(info->fix.id, "Geode LX");416 417 info->fix.type = FB_TYPE_PACKED_PIXELS;418 info->fix.type_aux = 0;419 info->fix.xpanstep = 0;420 info->fix.ypanstep = 0;421 info->fix.ywrapstep = 0;422 info->fix.accel = FB_ACCEL_NONE;423 424 info->var.nonstd = 0;425 info->var.activate = FB_ACTIVATE_NOW;426 info->var.height = -1;427 info->var.width = -1;428 info->var.accel_flags = 0;429 info->var.vmode = FB_VMODE_NONINTERLACED;430 431 info->fbops = &lxfb_ops;432 info->node = -1;433 434 info->pseudo_palette = (void *)par + sizeof(struct lxfb_par);435 436 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {437 framebuffer_release(info);438 return NULL;439 }440 441 info->var.grayscale = 0;442 443 return info;444}445 446static int __maybe_unused lxfb_suspend(struct device *dev)447{448 struct fb_info *info = dev_get_drvdata(dev);449 450 console_lock();451 lx_powerdown(info);452 fb_set_suspend(info, 1);453 console_unlock();454 455 /* there's no point in setting PCI states; we emulate PCI, so456 * we don't end up getting power savings anyways */457 458 return 0;459}460 461static int __maybe_unused lxfb_resume(struct device *dev)462{463 struct fb_info *info = dev_get_drvdata(dev);464 int ret;465 466 console_lock();467 ret = lx_powerup(info);468 if (ret) {469 printk(KERN_ERR "lxfb: power up failed!\n");470 return ret;471 }472 473 fb_set_suspend(info, 0);474 console_unlock();475 return 0;476}477 478static int lxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)479{480 struct lxfb_par *par;481 struct fb_info *info;482 int ret;483 484 struct fb_videomode *modedb_ptr;485 unsigned int modedb_size;486 487 ret = aperture_remove_conflicting_pci_devices(pdev, "lxfb");488 if (ret)489 return ret;490 491 info = lxfb_init_fbinfo(&pdev->dev);492 493 if (info == NULL)494 return -ENOMEM;495 496 par = info->par;497 498 ret = lxfb_map_video_memory(info, pdev);499 500 if (ret < 0) {501 dev_err(&pdev->dev,502 "failed to map frame buffer or controller registers\n");503 goto err;504 }505 506 /* Set up the desired outputs */507 508 par->output = 0;509 par->output |= (nopanel) ? 0 : OUTPUT_PANEL;510 par->output |= (nocrt) ? 0 : OUTPUT_CRT;511 512 /* Set up the mode database */513 514 get_modedb(&modedb_ptr, &modedb_size);515 ret = fb_find_mode(&info->var, info, mode_option,516 modedb_ptr, modedb_size, NULL, 16);517 518 if (ret == 0 || ret == 4) {519 dev_err(&pdev->dev, "could not find valid video mode\n");520 ret = -EINVAL;521 goto err;522 }523 524 /* Clear the screen of garbage, unless noclear was specified,525 * in which case we assume the user knows what he is doing */526 527 if (!noclear)528 memset_io(info->screen_base, 0, info->fix.smem_len);529 530 /* Set the mode */531 532 lxfb_check_var(&info->var, info);533 lxfb_set_par(info);534 535 pm_set_vt_switch(vt_switch);536 537 if (register_framebuffer(info) < 0) {538 ret = -EINVAL;539 goto err;540 }541 pci_set_drvdata(pdev, info);542 fb_info(info, "%s frame buffer device\n", info->fix.id);543 544 return 0;545 546err:547 if (info->screen_base) {548 iounmap(info->screen_base);549 pci_release_region(pdev, 0);550 }551 if (par->gp_regs) {552 iounmap(par->gp_regs);553 pci_release_region(pdev, 1);554 }555 if (par->dc_regs) {556 iounmap(par->dc_regs);557 pci_release_region(pdev, 2);558 }559 if (par->vp_regs) {560 iounmap(par->vp_regs);561 pci_release_region(pdev, 3);562 }563 564 fb_dealloc_cmap(&info->cmap);565 framebuffer_release(info);566 567 return ret;568}569 570static void lxfb_remove(struct pci_dev *pdev)571{572 struct fb_info *info = pci_get_drvdata(pdev);573 struct lxfb_par *par = info->par;574 575 unregister_framebuffer(info);576 577 iounmap(info->screen_base);578 pci_release_region(pdev, 0);579 580 iounmap(par->gp_regs);581 pci_release_region(pdev, 1);582 583 iounmap(par->dc_regs);584 pci_release_region(pdev, 2);585 586 iounmap(par->vp_regs);587 pci_release_region(pdev, 3);588 589 fb_dealloc_cmap(&info->cmap);590 framebuffer_release(info);591}592 593static struct pci_device_id lxfb_id_table[] = {594 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },595 { 0, }596};597 598MODULE_DEVICE_TABLE(pci, lxfb_id_table);599 600static const struct dev_pm_ops lxfb_pm_ops = {601#ifdef CONFIG_PM_SLEEP602 .suspend = lxfb_suspend,603 .resume = lxfb_resume,604 .freeze = NULL,605 .thaw = lxfb_resume,606 .poweroff = NULL,607 .restore = lxfb_resume,608#endif609};610 611static struct pci_driver lxfb_driver = {612 .name = "lxfb",613 .id_table = lxfb_id_table,614 .probe = lxfb_probe,615 .remove = lxfb_remove,616 .driver.pm = &lxfb_pm_ops,617};618 619#ifndef MODULE620static int __init lxfb_setup(char *options)621{622 char *opt;623 624 if (!options || !*options)625 return 0;626 627 while ((opt = strsep(&options, ",")) != NULL) {628 if (!*opt)629 continue;630 631 if (!strcmp(opt, "noclear"))632 noclear = 1;633 else if (!strcmp(opt, "nopanel"))634 nopanel = 1;635 else if (!strcmp(opt, "nocrt"))636 nocrt = 1;637 else638 mode_option = opt;639 }640 641 return 0;642}643#endif644 645static int __init lxfb_init(void)646{647#ifndef MODULE648 char *option = NULL;649#endif650 651 if (fb_modesetting_disabled("lxfb"))652 return -ENODEV;653 654#ifndef MODULE655 if (fb_get_options("lxfb", &option))656 return -ENODEV;657 658 lxfb_setup(option);659#endif660 return pci_register_driver(&lxfb_driver);661}662static void __exit lxfb_cleanup(void)663{664 pci_unregister_driver(&lxfb_driver);665}666 667module_init(lxfb_init);668module_exit(lxfb_cleanup);669 670module_param(mode_option, charp, 0);671MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])");672 673module_param(vram, int, 0);674MODULE_PARM_DESC(vram, "video memory size");675 676module_param(vt_switch, int, 0);677MODULE_PARM_DESC(vt_switch, "enable VT switch during suspend/resume");678 679MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX");680MODULE_LICENSE("GPL");681