drivers/video/geode/lxfb_core.c

   1 /*
   2  * Geode LX framebuffer driver.
   3  *
   4  * Copyright (C) 2007 Advanced Micro Devices, Inc.
   5  * Built from gxfb (which is Copyright (C) 2006 Arcom Control Systems Ltd.)
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/errno.h>
  16 #include <linux/string.h>
  17 #include <linux/console.h>
  18 #include <linux/mm.h>
  19 #include <linux/slab.h>
  20 #include <linux/suspend.h>
  21 #include <linux/delay.h>
  22 #include <linux/fb.h>
  23 #include <linux/init.h>
  24 #include <linux/pci.h>
  25 #include <linux/uaccess.h>
  26
  27 #include "lxfb.h"
  28
  29 static char *mode_option;
  30 static int noclear, nopanel, nocrt;
  31 static int vram;
  32 static int vt_switch;
  33
  34 /* Most of these modes are sorted in ascending order, but
  35  * since the first entry in this table is the "default" mode,
  36  * we try to make it something sane - 640x480-60 is sane
  37  */
  38
  39 static struct fb_videomode geode_modedb[] __initdata = {
  40         /* 640x480-60 */
  41         { NULL, 60, 640, 480, 39682, 48, 8, 25, 2, 88, 2,
  42           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  43           FB_VMODE_NONINTERLACED, 0 },
  44         /* 640x400-70 */
  45         { NULL, 70, 640, 400, 39770, 40, 8, 28, 5, 96, 2,
  46           FB_SYNC_HOR_HIGH_ACT,
  47           FB_VMODE_NONINTERLACED, 0 },
  48         /* 640x480-70 */
  49         { NULL, 70, 640, 480, 35014, 88, 24, 15, 2, 64, 3,
  50           0, FB_VMODE_NONINTERLACED, 0 },
  51         /* 640x480-72 */
  52         { NULL, 72, 640, 480, 32102, 120, 16, 20, 1, 40, 3,
  53           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  54           FB_VMODE_NONINTERLACED, 0 },
  55         /* 640x480-75 */
  56         { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
  57           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  58           FB_VMODE_NONINTERLACED, 0 },
  59         /* 640x480-85 */
  60         { NULL, 85, 640, 480, 27780, 80, 56, 25, 1, 56, 3,
  61           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  62           FB_VMODE_NONINTERLACED, 0 },
  63         /* 640x480-90 */
  64         { NULL, 90, 640, 480, 26392, 96, 32, 22, 1, 64, 3,
  65           0, FB_VMODE_NONINTERLACED, 0 },
  66         /* 640x480-100 */
  67         { NULL, 100, 640, 480, 23167, 104, 40, 25, 1, 64, 3,
  68           0, FB_VMODE_NONINTERLACED, 0 },
  69         /* 640x480-60 */
  70         { NULL, 60, 640, 480, 39682, 48, 16, 25, 10, 88, 2,
  71           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  72           FB_VMODE_NONINTERLACED, 0 },
  73         /* 800x600-56 */
  74         { NULL, 56, 800, 600, 27901, 128, 24, 22, 1, 72, 2,
  75           0, FB_VMODE_NONINTERLACED, 0 },
  76         /* 800x600-60 */
  77         { NULL, 60, 800, 600, 25131, 72, 32, 23, 1, 136, 4,
  78           0, FB_VMODE_NONINTERLACED, 0 },
  79         /* 800x600-70 */
  80         { NULL, 70, 800, 600, 21873, 120, 40, 21, 4, 80, 3,
  81           0, FB_VMODE_NONINTERLACED, 0 },
  82         /* 800x600-72 */
  83         { NULL, 72, 800, 600, 20052, 64, 56, 23, 37, 120, 6,
  84           0, FB_VMODE_NONINTERLACED, 0 },
  85         /* 800x600-75 */
  86         { NULL, 75, 800, 600, 20202, 160, 16, 21, 1, 80, 3,
  87           0, FB_VMODE_NONINTERLACED, 0 },
  88         /* 800x600-85 */
  89         { NULL, 85, 800, 600, 17790, 152, 32, 27, 1, 64, 3,
  90           0, FB_VMODE_NONINTERLACED, 0 },
  91         /* 800x600-90 */
  92         { NULL, 90, 800, 600, 16648, 128, 40, 28, 1, 88, 3,
  93           0, FB_VMODE_NONINTERLACED, 0 },
  94         /* 800x600-100 */
  95         { NULL, 100, 800, 600, 14667, 136, 48, 27, 1, 88, 3,
  96           0, FB_VMODE_NONINTERLACED, 0 },
  97         /* 800x600-60 */
  98         { NULL, 60, 800, 600, 25131, 88, 40, 23, 1, 128, 4,
  99           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 100           FB_VMODE_NONINTERLACED, 0 },
 101         /* 1024x768-60 */
 102         { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
 103           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 104           FB_VMODE_NONINTERLACED, 0 },
 105         /* 1024x768-70 */
 106         { NULL, 70, 1024, 768, 13346, 144, 24, 29, 3, 136, 6,
 107           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 108           FB_VMODE_NONINTERLACED, 0 },
 109         /* 1024x768-72 */
 110         { NULL, 72, 1024, 768, 12702, 168, 56, 29, 4, 112, 3,
 111           0, FB_VMODE_NONINTERLACED, 0 },
 112         /* 1024x768-75 */
 113         { NULL, 75, 1024, 768, 12703, 176, 16, 28, 1, 96, 3,
 114           0, FB_VMODE_NONINTERLACED, 0 },
 115         /* 1024x768-85 */
 116         { NULL, 85, 1024, 768, 10581, 208, 48, 36, 1, 96, 3,
 117           0, FB_VMODE_NONINTERLACED, 0 },
 118         /* 1024x768-90 */
 119         { NULL, 90, 1024, 768, 9981, 176, 64, 37, 1, 112, 3,
 120           0, FB_VMODE_NONINTERLACED, 0 },
 121         /* 1024x768-100 */
 122         { NULL, 100, 1024, 768, 8825, 184, 72, 42, 1, 112, 3,
 123           0, FB_VMODE_NONINTERLACED, 0 },
 124         /* 1024x768-60 */
 125         { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
 126           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 127           FB_VMODE_NONINTERLACED, 0 },
 128         /* 1152x864-60 */
 129         { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
 130           0, FB_VMODE_NONINTERLACED, 0 },
 131         /* 1152x864-70 */
 132         { NULL, 70, 1152, 864, 10254, 192, 72, 32, 8, 120, 3,
 133           0, FB_VMODE_NONINTERLACED, 0 },
 134         /* 1152x864-72 */
 135         { NULL, 72, 1152, 864, 9866, 200, 72, 33, 7, 128, 3,
 136           0, FB_VMODE_NONINTERLACED, 0 },
 137         /* 1152x864-75 */
 138         { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
 139           0, FB_VMODE_NONINTERLACED, 0 },
 140         /* 1152x864-85 */
 141         { NULL, 85, 1152, 864, 8357, 200, 72, 37, 3, 128, 3,
 142           0, FB_VMODE_NONINTERLACED, 0 },
 143         /* 1152x864-90 */
 144         { NULL, 90, 1152, 864, 7719, 208, 80, 42, 9, 128, 3,
 145           0, FB_VMODE_NONINTERLACED, 0 },
 146         /* 1152x864-100 */
 147         { NULL, 100, 1152, 864, 6947, 208, 80, 48, 3, 128, 3,
 148           0, FB_VMODE_NONINTERLACED, 0 },
 149         /* 1152x864-60 */
 150         { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
 151           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 152           FB_VMODE_NONINTERLACED, 0 },
 153         /* 1280x1024-60 */
 154         { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
 155           0, FB_VMODE_NONINTERLACED, 0 },
 156         /* 1280x1024-70 */
 157         { NULL, 70, 1280, 1024, 7719, 224, 88, 38, 6, 136, 3,
 158           0, FB_VMODE_NONINTERLACED, 0 },
 159         /* 1280x1024-72 */
 160         { NULL, 72, 1280, 1024, 7490, 224, 88, 39, 7, 136, 3,
 161           0, FB_VMODE_NONINTERLACED, 0 },
 162         /* 1280x1024-75 */
 163         { NULL, 75, 1280, 1024, 7409, 248, 16, 38, 1, 144, 3,
 164           0, FB_VMODE_NONINTERLACED, 0 },
 165         /* 1280x1024-85 */
 166         { NULL, 85, 1280, 1024, 6351, 224, 64, 44, 1, 160, 3,
 167           0, FB_VMODE_NONINTERLACED, 0 },
 168         /* 1280x1024-90 */
 169         { NULL, 90, 1280, 1024, 5791, 240, 96, 51, 12, 144, 3,
 170           0, FB_VMODE_NONINTERLACED, 0 },
 171         /* 1280x1024-100 */
 172         { NULL, 100, 1280, 1024, 5212, 240, 96, 57, 6, 144, 3,
 173           0, FB_VMODE_NONINTERLACED, 0 },
 174         /* 1280x1024-60 */
 175         { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
 176           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 177           FB_VMODE_NONINTERLACED, 0 },
 178         /* 1600x1200-60 */
 179         { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
 180           0, FB_VMODE_NONINTERLACED, 0 },
 181         /* 1600x1200-70 */
 182         { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
 183           0, FB_VMODE_NONINTERLACED, 0 },
 184         /* 1600x1200-72 */
 185         { NULL, 72, 1600, 1200, 5053, 288, 112, 47, 13, 176, 3,
 186           0, FB_VMODE_NONINTERLACED, 0 },
 187         /* 1600x1200-75 */
 188         { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
 189           0, FB_VMODE_NONINTERLACED, 0 },
 190         /* 1600x1200-85 */
 191         { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
 192           0, FB_VMODE_NONINTERLACED, 0 },
 193         /* 1600x1200-90 */
 194         { NULL, 90, 1600, 1200, 3981, 304, 128, 60, 1, 176, 3,
 195           0, FB_VMODE_NONINTERLACED, 0 },
 196         /* 1600x1200-100 */
 197         { NULL, 100, 1600, 1200, 3563, 304, 128, 67, 1, 176, 3,
 198           0, FB_VMODE_NONINTERLACED, 0 },
 199         /* 1600x1200-60 */
 200         { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
 201           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 202           FB_VMODE_NONINTERLACED, 0 },
 203         /* 1920x1440-60 */
 204         { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 208, 3,
 205           0, FB_VMODE_NONINTERLACED, 0 },
 206         /* 1920x1440-70 */
 207         { NULL, 70, 1920, 1440, 3593, 360, 152, 55, 8, 208, 3,
 208           0, FB_VMODE_NONINTERLACED, 0 },
 209         /* 1920x1440-72 */
 210         { NULL, 72, 1920, 1440, 3472, 360, 152, 68, 4, 208, 3,
 211           0, FB_VMODE_NONINTERLACED, 0 },
 212         /* 1920x1440-75 */
 213         { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
 214           0, FB_VMODE_NONINTERLACED, 0 },
 215         /* 1920x1440-85 */
 216         { NULL, 85, 1920, 1440, 2929, 368, 152, 68, 1, 216, 3,
 217           0, FB_VMODE_NONINTERLACED, 0 },
 218 };
 219
 220 #ifdef CONFIG_OLPC
 221 #include <asm/olpc.h>
 222
 223 static struct fb_videomode olpc_dcon_modedb[] __initdata = {
 224         /* The only mode the DCON has is 1200x900 */
 225         { NULL, 50, 1200, 900, 17460, 24, 8, 4, 5, 8, 3,
 226           FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 227           FB_VMODE_NONINTERLACED, 0 }
 228 };
 229
 230 static void __init get_modedb(struct fb_videomode **modedb, unsigned int *size)
 231 {
 232         if (olpc_has_dcon()) {
 233                 *modedb = (struct fb_videomode *) olpc_dcon_modedb;
 234                 *size = ARRAY_SIZE(olpc_dcon_modedb);
 235         } else {
 236                 *modedb = (struct fb_videomode *) geode_modedb;
 237                 *size = ARRAY_SIZE(geode_modedb);
 238         }
 239 }
 240
 241 #else
 242 static void __init get_modedb(struct fb_videomode **modedb, unsigned int *size)
 243 {
 244         *modedb = (struct fb_videomode *) geode_modedb;
 245         *size = ARRAY_SIZE(geode_modedb);
 246 }
 247 #endif
 248
 249 static int lxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 250 {
 251         if (var->xres > 1920 || var->yres > 1440)
 252                 return -EINVAL;
 253
 254         if (var->bits_per_pixel == 32) {
 255                 var->red.offset   = 16; var->red.length   = 8;
 256                 var->green.offset =  8; var->green.length = 8;
 257                 var->blue.offset  =  0; var->blue.length  = 8;
 258         } else if (var->bits_per_pixel == 16) {
 259                 var->red.offset   = 11; var->red.length   = 5;
 260                 var->green.offset =  5; var->green.length = 6;
 261                 var->blue.offset  =  0; var->blue.length  = 5;
 262         } else if (var->bits_per_pixel == 8) {
 263                 var->red.offset   = 0; var->red.length   = 8;
 264                 var->green.offset = 0; var->green.length = 8;
 265                 var->blue.offset  = 0; var->blue.length  = 8;
 266         } else
 267                 return -EINVAL;
 268
 269         var->transp.offset = 0; var->transp.length = 0;
 270
 271         /* Enough video memory? */
 272         if ((lx_get_pitch(var->xres, var->bits_per_pixel) * var->yres)
 273             > info->fix.smem_len)
 274           return -EINVAL;
 275
 276         return 0;
 277 }
 278
 279 static int lxfb_set_par(struct fb_info *info)
 280 {
 281         if (info->var.bits_per_pixel > 8)
 282                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 283         else
 284                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 285
 286         info->fix.line_length = lx_get_pitch(info->var.xres,
 287                 info->var.bits_per_pixel);
 288
 289         lx_set_mode(info);
 290         return 0;
 291 }
 292
 293 static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
 294 {
 295         chan &= 0xffff;
 296         chan >>= 16 - bf->length;
 297         return chan << bf->offset;
 298 }
 299
 300 static int lxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 301                            unsigned blue, unsigned transp,
 302                            struct fb_info *info)
 303 {
 304         if (info->var.grayscale) {
 305                 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
 306                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
 307         }
 308
 309         /* Truecolor has hardware independent palette */
 310         if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
 311                 u32 *pal = info->pseudo_palette;
 312                 u32 v;
 313
 314                 if (regno >= 16)
 315                         return -EINVAL;
 316
 317                 v  = chan_to_field(red, &info->var.red);
 318                 v |= chan_to_field(green, &info->var.green);
 319                 v |= chan_to_field(blue, &info->var.blue);
 320
 321                 pal[regno] = v;
 322         } else {
 323                 if (regno >= 256)
 324                         return -EINVAL;
 325
 326                 lx_set_palette_reg(info, regno, red, green, blue);
 327         }
 328
 329         return 0;
 330 }
 331
 332 static int lxfb_blank(int blank_mode, struct fb_info *info)
 333 {
 334         return lx_blank_display(info, blank_mode);
 335 }
 336
 337
 338 static int __init lxfb_map_video_memory(struct fb_info *info,
 339                                         struct pci_dev *dev)
 340 {
 341         struct lxfb_par *par = info->par;
 342         int ret;
 343
 344         ret = pci_enable_device(dev);
 345
 346         if (ret)
 347                 return ret;
 348
 349         ret = pci_request_region(dev, 0, "lxfb-framebuffer");
 350
 351         if (ret)
 352                 return ret;
 353
 354         ret = pci_request_region(dev, 1, "lxfb-gp");
 355
 356         if (ret)
 357                 return ret;
 358
 359         ret = pci_request_region(dev, 2, "lxfb-vg");
 360
 361         if (ret)
 362                 return ret;
 363
 364         ret = pci_request_region(dev, 3, "lxfb-vp");
 365
 366         if (ret)
 367                 return ret;
 368
 369         info->fix.smem_start = pci_resource_start(dev, 0);
 370         info->fix.smem_len = vram ? vram : lx_framebuffer_size();
 371
 372         info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
 373
 374         ret = -ENOMEM;
 375
 376         if (info->screen_base == NULL)
 377                 return ret;
 378
 379         par->gp_regs = pci_ioremap_bar(dev, 1);
 380
 381         if (par->gp_regs == NULL)
 382                 return ret;
 383
 384         par->dc_regs = pci_ioremap_bar(dev, 2);
 385
 386         if (par->dc_regs == NULL)
 387                 return ret;
 388
 389         par->vp_regs = pci_ioremap_bar(dev, 3);
 390
 391         if (par->vp_regs == NULL)
 392                 return ret;
 393
 394         write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
 395         write_dc(par, DC_GLIU0_MEM_OFFSET, info->fix.smem_start & 0xFF000000);
 396         write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
 397
 398         dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n",
 399                  info->fix.smem_len / 1024, info->fix.smem_start);
 400
 401         return 0;
 402 }
 403
 404 static struct fb_ops lxfb_ops = {
 405         .owner          = THIS_MODULE,
 406         .fb_check_var   = lxfb_check_var,
 407         .fb_set_par     = lxfb_set_par,
 408         .fb_setcolreg   = lxfb_setcolreg,
 409         .fb_blank       = lxfb_blank,
 410         /* No HW acceleration for now. */
 411         .fb_fillrect    = cfb_fillrect,
 412         .fb_copyarea    = cfb_copyarea,
 413         .fb_imageblit   = cfb_imageblit,
 414 };
 415
 416 static struct fb_info * __init lxfb_init_fbinfo(struct device *dev)
 417 {
 418         struct lxfb_par *par;
 419         struct fb_info *info;
 420
 421         /* Alloc enough space for the pseudo palette. */
 422         info = framebuffer_alloc(sizeof(struct lxfb_par) + sizeof(u32) * 16,
 423                                  dev);
 424         if (!info)
 425                 return NULL;
 426
 427         par = info->par;
 428
 429         strcpy(info->fix.id, "Geode LX");
 430
 431         info->fix.type          = FB_TYPE_PACKED_PIXELS;
 432         info->fix.type_aux      = 0;
 433         info->fix.xpanstep      = 0;
 434         info->fix.ypanstep      = 0;
 435         info->fix.ywrapstep     = 0;
 436         info->fix.accel         = FB_ACCEL_NONE;
 437
 438         info->var.nonstd        = 0;
 439         info->var.activate      = FB_ACTIVATE_NOW;
 440         info->var.height        = -1;
 441         info->var.width = -1;
 442         info->var.accel_flags = 0;
 443         info->var.vmode = FB_VMODE_NONINTERLACED;
 444
 445         info->fbops             = &lxfb_ops;
 446         info->flags             = FBINFO_DEFAULT;
 447         info->node              = -1;
 448
 449         info->pseudo_palette    = (void *)par + sizeof(struct lxfb_par);
 450
 451         if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
 452                 framebuffer_release(info);
 453                 return NULL;
 454         }
 455
 456         info->var.grayscale     = 0;
 457
 458         return info;
 459 }
 460
 461 #ifdef CONFIG_PM
 462 static int lxfb_suspend(struct pci_dev *pdev, pm_message_t state)
 463 {
 464         struct fb_info *info = pci_get_drvdata(pdev);
 465
 466         if (state.event == PM_EVENT_SUSPEND) {
 467                 acquire_console_sem();
 468                 lx_powerdown(info);
 469                 fb_set_suspend(info, 1);
 470                 release_console_sem();
 471         }
 472
 473         /* there's no point in setting PCI states; we emulate PCI, so
 474          * we don't end up getting power savings anyways */
 475
 476         return 0;
 477 }
 478
 479 static int lxfb_resume(struct pci_dev *pdev)
 480 {
 481         struct fb_info *info = pci_get_drvdata(pdev);
 482         int ret;
 483
 484         acquire_console_sem();
 485         ret = lx_powerup(info);
 486         if (ret) {
 487                 printk(KERN_ERR "lxfb:  power up failed!\n");
 488                 return ret;
 489         }
 490
 491         fb_set_suspend(info, 0);
 492         release_console_sem();
 493         return 0;
 494 }
 495 #else
 496 #define lxfb_suspend NULL
 497 #define lxfb_resume NULL
 498 #endif
 499
 500 static int __init lxfb_probe(struct pci_dev *pdev,
 501                              const struct pci_device_id *id)
 502 {
 503         struct lxfb_par *par;
 504         struct fb_info *info;
 505         int ret;
 506
 507         struct fb_videomode *modedb_ptr;
 508         unsigned int modedb_size;
 509
 510         info = lxfb_init_fbinfo(&pdev->dev);
 511
 512         if (info == NULL)
 513                 return -ENOMEM;
 514
 515         par = info->par;
 516
 517         ret = lxfb_map_video_memory(info, pdev);
 518
 519         if (ret < 0) {
 520                 dev_err(&pdev->dev,
 521                         "failed to map frame buffer or controller registers\n");
 522                 goto err;
 523         }
 524
 525         /* Set up the desired outputs */
 526
 527         par->output = 0;
 528         par->output |= (nopanel) ? 0 : OUTPUT_PANEL;
 529         par->output |= (nocrt) ? 0 : OUTPUT_CRT;
 530
 531         /* Set up the mode database */
 532
 533         get_modedb(&modedb_ptr, &modedb_size);
 534         ret = fb_find_mode(&info->var, info, mode_option,
 535                            modedb_ptr, modedb_size, NULL, 16);
 536
 537         if (ret == 0 || ret == 4) {
 538                 dev_err(&pdev->dev, "could not find valid video mode\n");
 539                 ret = -EINVAL;
 540                 goto err;
 541         }
 542
 543         /* Clear the screen of garbage, unless noclear was specified,
 544          * in which case we assume the user knows what he is doing */
 545
 546         if (!noclear)
 547                 memset_io(info->screen_base, 0, info->fix.smem_len);
 548
 549         /* Set the mode */
 550
 551         lxfb_check_var(&info->var, info);
 552         lxfb_set_par(info);
 553
 554         pm_set_vt_switch(vt_switch);
 555
 556         if (register_framebuffer(info) < 0) {
 557                 ret = -EINVAL;
 558                 goto err;
 559         }
 560         pci_set_drvdata(pdev, info);
 561         printk(KERN_INFO "fb%d: %s frame buffer device\n",
 562                 info->node, info->fix.id);
 563
 564         return 0;
 565
 566 err:
 567         if (info->screen_base) {
 568                 iounmap(info->screen_base);
 569                 pci_release_region(pdev, 0);
 570         }
 571         if (par->gp_regs) {
 572                 iounmap(par->gp_regs);
 573                 pci_release_region(pdev, 1);
 574         }
 575         if (par->dc_regs) {
 576                 iounmap(par->dc_regs);
 577                 pci_release_region(pdev, 2);
 578         }
 579         if (par->vp_regs) {
 580                 iounmap(par->vp_regs);
 581                 pci_release_region(pdev, 3);
 582         }
 583
 584         if (info) {
 585                 fb_dealloc_cmap(&info->cmap);
 586                 framebuffer_release(info);
 587         }
 588
 589         return ret;
 590 }
 591
 592 static void lxfb_remove(struct pci_dev *pdev)
 593 {
 594         struct fb_info *info = pci_get_drvdata(pdev);
 595         struct lxfb_par *par = info->par;
 596
 597         unregister_framebuffer(info);
 598
 599         iounmap(info->screen_base);
 600         pci_release_region(pdev, 0);
 601
 602         iounmap(par->gp_regs);
 603         pci_release_region(pdev, 1);
 604
 605         iounmap(par->dc_regs);
 606         pci_release_region(pdev, 2);
 607
 608         iounmap(par->vp_regs);
 609         pci_release_region(pdev, 3);
 610
 611         fb_dealloc_cmap(&info->cmap);
 612         pci_set_drvdata(pdev, NULL);
 613         framebuffer_release(info);
 614 }
 615
 616 static struct pci_device_id lxfb_id_table[] = {
 617         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },
 618         { 0, }
 619 };
 620
 621 MODULE_DEVICE_TABLE(pci, lxfb_id_table);
 622
 623 static struct pci_driver lxfb_driver = {
 624         .name           = "lxfb",
 625         .id_table       = lxfb_id_table,
 626         .probe          = lxfb_probe,
 627         .remove         = lxfb_remove,
 628         .suspend        = lxfb_suspend,
 629         .resume         = lxfb_resume,
 630 };
 631
 632 #ifndef MODULE
 633 static int __init lxfb_setup(char *options)
 634 {
 635         char *opt;
 636
 637         if (!options || !*options)
 638                 return 0;
 639
 640         while ((opt = strsep(&options, ",")) != NULL) {
 641                 if (!*opt)
 642                         continue;
 643
 644                 if (!strcmp(opt, "noclear"))
 645                         noclear = 1;
 646                 else if (!strcmp(opt, "nopanel"))
 647                         nopanel = 1;
 648                 else if (!strcmp(opt, "nocrt"))
 649                         nocrt = 1;
 650                 else
 651                         mode_option = opt;
 652         }
 653
 654         return 0;
 655 }
 656 #endif
 657
 658 static int __init lxfb_init(void)
 659 {
 660 #ifndef MODULE
 661         char *option = NULL;
 662
 663         if (fb_get_options("lxfb", &option))
 664                 return -ENODEV;
 665
 666         lxfb_setup(option);
 667 #endif
 668         return pci_register_driver(&lxfb_driver);
 669 }
 670 static void __exit lxfb_cleanup(void)
 671 {
 672         pci_unregister_driver(&lxfb_driver);
 673 }
 674
 675 module_init(lxfb_init);
 676 module_exit(lxfb_cleanup);
 677
 678 module_param(mode_option, charp, 0);
 679 MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])");
 680
 681 module_param(vram, int, 0);
 682 MODULE_PARM_DESC(vram, "video memory size");
 683
 684 module_param(vt_switch, int, 0);
 685 MODULE_PARM_DESC(vt_switch, "enable VT switch during suspend/resume");
 686
 687 MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX");
 688 MODULE_LICENSE("GPL");