LXR linux/drivers/video/fbdev/geode/lxfb

   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
  26static char *mode_option;
  27static int noclear, nopanel, nocrt;
  28static int vram;
  29static 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
  36static 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
 217static 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
 224static 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
 235static 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
 265static 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
 279static 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
 286static 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
 318static int lxfb_blank(int blank_mode, struct fb_info *info)
 319{
 320        return lx_blank_display(info, blank_mode);
 321}
 322
 323
 324static 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
 389static 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
 401static 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
 447static 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
 464static 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
 485static 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
 549err:
 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
 573static 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
 596static struct pci_device_id lxfb_id_table[] = {
 597        { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },
 598        { 0, }
 599};
 600
 601MODULE_DEVICE_TABLE(pci, lxfb_id_table);
 602
 603static 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
 613static 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
 638static 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}
 650static void __exit lxfb_cleanup(void)
 651{
 652        pci_unregister_driver(&lxfb_driver);
 653}
 654
 655module_init(lxfb_init);
 656module_exit(lxfb_cleanup);
 657
 658module_param(mode_option, charp, 0);
 659MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])");
 660
 661module_param(vram, int, 0);
 662MODULE_PARM_DESC(vram, "video memory size");
 663
 664module_param(vt_switch, int, 0);
 665MODULE_PARM_DESC(vt_switch, "enable VT switch during suspend/resume");
 666
 667MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX");
 668MODULE_LICENSE("GPL");
 669