drivers/video/fbdev/geode/lxfb_core.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   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
  27 static char *mode_option;
  28 static int noclear, nopanel, nocrt;
  29 static int vram;
  30 static int vt_switch;
  31
  32 /* Most of these modes are sorted in ascending order, but
  33  * since the first entry in this table is the "default" mode,
  34  * we try to make it something sane - 640x480-60 is sane
  35  */
  36
  37 static 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
 218 static 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
 225 static 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
 236 static 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         } else
 257                 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
 269 static 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         else
 274                 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
 283 static 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
 290 static 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
 322 static int lxfb_blank(int blank_mode, struct fb_info *info)
 323 {
 324         return lx_blank_display(info, blank_mode);
 325 }
 326
 327
 328 static 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
 393 static 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
 402 static 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
 446 static 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, so
 456          * we don't end up getting power savings anyways */
 457
 458         return 0;
 459 }
 460
 461 static 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
 478 static 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
 546 err:
 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
 570 static 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
 593 static struct pci_device_id lxfb_id_table[] = {
 594         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },
 595         { 0, }
 596 };
 597
 598 MODULE_DEVICE_TABLE(pci, lxfb_id_table);
 599
 600 static const struct dev_pm_ops lxfb_pm_ops = {
 601 #ifdef CONFIG_PM_SLEEP
 602         .suspend        = lxfb_suspend,
 603         .resume         = lxfb_resume,
 604         .freeze         = NULL,
 605         .thaw           = lxfb_resume,
 606         .poweroff       = NULL,
 607         .restore        = lxfb_resume,
 608 #endif
 609 };
 610
 611 static 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 MODULE
 620 static 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                 else
 638                         mode_option = opt;
 639         }
 640
 641         return 0;
 642 }
 643 #endif
 644
 645 static int __init lxfb_init(void)
 646 {
 647 #ifndef MODULE
 648         char *option = NULL;
 649 #endif
 650
 651         if (fb_modesetting_disabled("lxfb"))
 652                 return -ENODEV;
 653
 654 #ifndef MODULE
 655         if (fb_get_options("lxfb", &option))
 656                 return -ENODEV;
 657
 658         lxfb_setup(option);
 659 #endif
 660         return pci_register_driver(&lxfb_driver);
 661 }
 662 static void __exit lxfb_cleanup(void)
 663 {
 664         pci_unregister_driver(&lxfb_driver);
 665 }
 666
 667 module_init(lxfb_init);
 668 module_exit(lxfb_cleanup);
 669
 670 module_param(mode_option, charp, 0);
 671 MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])");
 672
 673 module_param(vram, int, 0);
 674 MODULE_PARM_DESC(vram, "video memory size");
 675
 676 module_param(vt_switch, int, 0);
 677 MODULE_PARM_DESC(vt_switch, "enable VT switch during suspend/resume");
 678
 679 MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX");
 680 MODULE_LICENSE("GPL");