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                 fb_dealloc_cmap(&info->cmap);
 284         } else {
 285                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 286                 fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0);
 287         }
 288
 289         info->fix.line_length = lx_get_pitch(info->var.xres,
 290                 info->var.bits_per_pixel);
 291
 292         lx_set_mode(info);
 293         return 0;
 294 }
 295
 296 static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
 297 {
 298         chan &= 0xffff;
 299         chan >>= 16 - bf->length;
 300         return chan << bf->offset;
 301 }
 302
 303 static int lxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 304                            unsigned blue, unsigned transp,
 305                            struct fb_info *info)
 306 {
 307         if (info->var.grayscale) {
 308                 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
 309                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
 310         }
 311
 312         /* Truecolor has hardware independent palette */
 313         if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
 314                 u32 *pal = info->pseudo_palette;
 315                 u32 v;
 316
 317                 if (regno >= 16)
 318                         return -EINVAL;
 319
 320                 v  = chan_to_field(red, &info->var.red);
 321                 v |= chan_to_field(green, &info->var.green);
 322                 v |= chan_to_field(blue, &info->var.blue);
 323
 324                 pal[regno] = v;
 325         } else {
 326                 if (regno >= 256)
 327                         return -EINVAL;
 328
 329                 lx_set_palette_reg(info, regno, red, green, blue);
 330         }
 331
 332         return 0;
 333 }
 334
 335 static int lxfb_blank(int blank_mode, struct fb_info *info)
 336 {
 337         return lx_blank_display(info, blank_mode);
 338 }
 339
 340
 341 static int __init lxfb_map_video_memory(struct fb_info *info,
 342                                         struct pci_dev *dev)
 343 {
 344         struct lxfb_par *par = info->par;
 345         int ret;
 346
 347         ret = pci_enable_device(dev);
 348
 349         if (ret)
 350                 return ret;
 351
 352         ret = pci_request_region(dev, 0, "lxfb-framebuffer");
 353
 354         if (ret)
 355                 return ret;
 356
 357         ret = pci_request_region(dev, 1, "lxfb-gp");
 358
 359         if (ret)
 360                 return ret;
 361
 362         ret = pci_request_region(dev, 2, "lxfb-vg");
 363
 364         if (ret)
 365                 return ret;
 366
 367         ret = pci_request_region(dev, 3, "lxfb-vp");
 368
 369         if (ret)
 370                 return ret;
 371
 372         info->fix.smem_start = pci_resource_start(dev, 0);
 373         info->fix.smem_len = vram ? vram : lx_framebuffer_size();
 374
 375         info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
 376
 377         ret = -ENOMEM;
 378
 379         if (info->screen_base == NULL)
 380                 return ret;
 381
 382         par->gp_regs = ioremap(pci_resource_start(dev, 1),
 383                                 pci_resource_len(dev, 1));
 384
 385         if (par->gp_regs == NULL)
 386                 return ret;
 387
 388         par->dc_regs = ioremap(pci_resource_start(dev, 2),
 389                                pci_resource_len(dev, 2));
 390
 391         if (par->dc_regs == NULL)
 392                 return ret;
 393
 394         par->vp_regs = ioremap(pci_resource_start(dev, 3),
 395                                pci_resource_len(dev, 3));
 396
 397         if (par->vp_regs == NULL)
 398                 return ret;
 399
 400         write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
 401         write_dc(par, DC_GLIU0_MEM_OFFSET, info->fix.smem_start & 0xFF000000);
 402         write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
 403
 404         dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n",
 405                  info->fix.smem_len / 1024, info->fix.smem_start);
 406
 407         return 0;
 408 }
 409
 410 static struct fb_ops lxfb_ops = {
 411         .owner          = THIS_MODULE,
 412         .fb_check_var   = lxfb_check_var,
 413         .fb_set_par     = lxfb_set_par,
 414         .fb_setcolreg   = lxfb_setcolreg,
 415         .fb_blank       = lxfb_blank,
 416         /* No HW acceleration for now. */
 417         .fb_fillrect    = cfb_fillrect,
 418         .fb_copyarea    = cfb_copyarea,
 419         .fb_imageblit   = cfb_imageblit,
 420 };
 421
 422 static struct fb_info * __init lxfb_init_fbinfo(struct device *dev)
 423 {
 424         struct lxfb_par *par;
 425         struct fb_info *info;
 426
 427         /* Alloc enough space for the pseudo palette. */
 428         info = framebuffer_alloc(sizeof(struct lxfb_par) + sizeof(u32) * 16,
 429                                  dev);
 430         if (!info)
 431                 return NULL;
 432
 433         par = info->par;
 434
 435         strcpy(info->fix.id, "Geode LX");
 436
 437         info->fix.type          = FB_TYPE_PACKED_PIXELS;
 438         info->fix.type_aux      = 0;
 439         info->fix.xpanstep      = 0;
 440         info->fix.ypanstep      = 0;
 441         info->fix.ywrapstep     = 0;
 442         info->fix.accel         = FB_ACCEL_NONE;
 443
 444         info->var.nonstd        = 0;
 445         info->var.activate      = FB_ACTIVATE_NOW;
 446         info->var.height        = -1;
 447         info->var.width = -1;
 448         info->var.accel_flags = 0;
 449         info->var.vmode = FB_VMODE_NONINTERLACED;
 450
 451         info->fbops             = &lxfb_ops;
 452         info->flags             = FBINFO_DEFAULT;
 453         info->node              = -1;
 454
 455         info->pseudo_palette    = (void *)par + sizeof(struct lxfb_par);
 456
 457         info->var.grayscale     = 0;
 458
 459         return info;
 460 }
 461
 462 #ifdef CONFIG_PM
 463 static int lxfb_suspend(struct pci_dev *pdev, pm_message_t state)
 464 {
 465         struct fb_info *info = pci_get_drvdata(pdev);
 466
 467         if (state.event == PM_EVENT_SUSPEND) {
 468                 acquire_console_sem();
 469                 lx_powerdown(info);
 470                 fb_set_suspend(info, 1);
 471                 release_console_sem();
 472         }
 473
 474         /* there's no point in setting PCI states; we emulate PCI, so
 475          * we don't end up getting power savings anyways */
 476
 477         return 0;
 478 }
 479
 480 static int lxfb_resume(struct pci_dev *pdev)
 481 {
 482         struct fb_info *info = pci_get_drvdata(pdev);
 483         int ret;
 484
 485         acquire_console_sem();
 486         ret = lx_powerup(info);
 487         if (ret) {
 488                 printk(KERN_ERR "lxfb:  power up failed!\n");
 489                 return ret;
 490         }
 491
 492         fb_set_suspend(info, 0);
 493         release_console_sem();
 494         return 0;
 495 }
 496 #else
 497 #define lxfb_suspend NULL
 498 #define lxfb_resume NULL
 499 #endif
 500
 501 static int __init lxfb_probe(struct pci_dev *pdev,
 502                              const struct pci_device_id *id)
 503 {
 504         struct lxfb_par *par;
 505         struct fb_info *info;
 506         int ret;
 507
 508         struct fb_videomode *modedb_ptr;
 509         unsigned int modedb_size;
 510
 511         info = lxfb_init_fbinfo(&pdev->dev);
 512
 513         if (info == NULL)
 514                 return -ENOMEM;
 515
 516         par = info->par;
 517
 518         ret = lxfb_map_video_memory(info, pdev);
 519
 520         if (ret < 0) {
 521                 dev_err(&pdev->dev,
 522                         "failed to map frame buffer or controller registers\n");
 523                 goto err;
 524         }
 525
 526         /* Set up the desired outputs */
 527
 528         par->output = 0;
 529         par->output |= (nopanel) ? 0 : OUTPUT_PANEL;
 530         par->output |= (nocrt) ? 0 : OUTPUT_CRT;
 531
 532         /* Set up the mode database */
 533
 534         get_modedb(&modedb_ptr, &modedb_size);
 535         ret = fb_find_mode(&info->var, info, mode_option,
 536                            modedb_ptr, modedb_size, NULL, 16);
 537
 538         if (ret == 0 || ret == 4) {
 539                 dev_err(&pdev->dev, "could not find valid video mode\n");
 540                 ret = -EINVAL;
 541                 goto err;
 542         }
 543
 544         /* Clear the screen of garbage, unless noclear was specified,
 545          * in which case we assume the user knows what he is doing */
 546
 547         if (!noclear)
 548                 memset_io(info->screen_base, 0, info->fix.smem_len);
 549
 550         /* Set the mode */
 551
 552         lxfb_check_var(&info->var, info);
 553         lxfb_set_par(info);
 554
 555         pm_set_vt_switch(vt_switch);
 556
 557         if (register_framebuffer(info) < 0) {
 558                 ret = -EINVAL;
 559                 goto err;
 560         }
 561         pci_set_drvdata(pdev, info);
 562         printk(KERN_INFO "fb%d: %s frame buffer device\n",
 563                 info->node, info->fix.id);
 564
 565         return 0;
 566
 567 err:
 568         if (info->screen_base) {
 569                 iounmap(info->screen_base);
 570                 pci_release_region(pdev, 0);
 571         }
 572         if (par->gp_regs) {
 573                 iounmap(par->gp_regs);
 574                 pci_release_region(pdev, 1);
 575         }
 576         if (par->dc_regs) {
 577                 iounmap(par->dc_regs);
 578                 pci_release_region(pdev, 2);
 579         }
 580         if (par->vp_regs) {
 581                 iounmap(par->vp_regs);
 582                 pci_release_region(pdev, 3);
 583         }
 584
 585         if (info)
 586                 framebuffer_release(info);
 587
 588         return ret;
 589 }
 590
 591 static void lxfb_remove(struct pci_dev *pdev)
 592 {
 593         struct fb_info *info = pci_get_drvdata(pdev);
 594         struct lxfb_par *par = info->par;
 595
 596         unregister_framebuffer(info);
 597
 598         iounmap(info->screen_base);
 599         pci_release_region(pdev, 0);
 600
 601         iounmap(par->gp_regs);
 602         pci_release_region(pdev, 1);
 603
 604         iounmap(par->dc_regs);
 605         pci_release_region(pdev, 2);
 606
 607         iounmap(par->vp_regs);
 608         pci_release_region(pdev, 3);
 609
 610         pci_set_drvdata(pdev, NULL);
 611         framebuffer_release(info);
 612 }
 613
 614 static struct pci_device_id lxfb_id_table[] = {
 615         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },
 616         { 0, }
 617 };
 618
 619 MODULE_DEVICE_TABLE(pci, lxfb_id_table);
 620
 621 static struct pci_driver lxfb_driver = {
 622         .name           = "lxfb",
 623         .id_table       = lxfb_id_table,
 624         .probe          = lxfb_probe,
 625         .remove         = lxfb_remove,
 626         .suspend        = lxfb_suspend,
 627         .resume         = lxfb_resume,
 628 };
 629
 630 #ifndef MODULE
 631 static int __init lxfb_setup(char *options)
 632 {
 633         char *opt;
 634
 635         if (!options || !*options)
 636                 return 0;
 637
 638         while ((opt = strsep(&options, ",")) != NULL) {
 639                 if (!*opt)
 640                         continue;
 641
 642                 if (!strcmp(opt, "noclear"))
 643                         noclear = 1;
 644                 else if (!strcmp(opt, "nopanel"))
 645                         nopanel = 1;
 646                 else if (!strcmp(opt, "nocrt"))
 647                         nocrt = 1;
 648                 else
 649                         mode_option = opt;
 650         }
 651
 652         return 0;
 653 }
 654 #endif
 655
 656 static int __init lxfb_init(void)
 657 {
 658 #ifndef MODULE
 659         char *option = NULL;
 660
 661         if (fb_get_options("lxfb", &option))
 662                 return -ENODEV;
 663
 664         lxfb_setup(option);
 665 #endif
 666         return pci_register_driver(&lxfb_driver);
 667 }
 668 static void __exit lxfb_cleanup(void)
 669 {
 670         pci_unregister_driver(&lxfb_driver);
 671 }
 672
 673 module_init(lxfb_init);
 674 module_exit(lxfb_cleanup);
 675
 676 module_param(mode_option, charp, 0);
 677 MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])");
 678
 679 module_param(vram, int, 0);
 680 MODULE_PARM_DESC(vram, "video memory size");
 681
 682 module_param(vt_switch, int, 0);
 683 MODULE_PARM_DESC(vt_switch, "enable VT switch during suspend/resume");
 684
 685 MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX");
 686 MODULE_LICENSE("GPL");