drivers/video/fbdev/geode/lxfb

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

DEFINITIONS
