drivers/staging/sm750fb/sm750.c

   1 #include <linux/kernel.h>
   2 #include <linux/module.h>
   3 #include <linux/errno.h>
   4 #include <linux/string.h>
   5 #include <linux/mm.h>
   6 #include <linux/slab.h>
   7 #include <linux/delay.h>
   8 #include <linux/fb.h>
   9 #include <linux/ioport.h>
  10 #include <linux/init.h>
  11 #include <linux/pci.h>
  12 #include <linux/mm_types.h>
  13 #include <linux/vmalloc.h>
  14 #include <linux/pagemap.h>
  15 #include <linux/screen_info.h>
  16 #include <linux/console.h>
  17 #include <asm/fb.h>
  18 #include "sm750.h"
  19 #include "sm750_accel.h"
  20 #include "sm750_cursor.h"
  21
  22 /*
  23  * #ifdef __BIG_ENDIAN
  24  * ssize_t lynxfb_ops_write(struct fb_info *info, const char __user *buf,
  25  * size_t count, loff_t *ppos);
  26  * ssize_t lynxfb_ops_read(struct fb_info *info, char __user *buf,
  27  * size_t count, loff_t *ppos);
  28  * #endif
  29  */
  30
  31 /* common var for all device */
  32 static int g_hwcursor = 1;
  33 static int g_noaccel;
  34 static int g_nomtrr;
  35 static const char *g_fbmode[] = {NULL, NULL};
  36 static const char *g_def_fbmode = "1024x768-32@60";
  37 static char *g_settings;
  38 static int g_dualview;
  39 static char *g_option;
  40
  41 static const struct fb_videomode lynx750_ext[] = {
  42         /*      1024x600-60 VESA        [1.71:1] */
  43         {NULL,  60, 1024, 600, 20423, 144,  40, 18, 1, 104, 3,
  44          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  45          FB_VMODE_NONINTERLACED},
  46
  47         /*      1024x600-70 VESA */
  48         {NULL,  70, 1024, 600, 17211, 152,  48, 21, 1, 104, 3,
  49          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  50          FB_VMODE_NONINTERLACED},
  51
  52         /*      1024x600-75 VESA */
  53         {NULL,  75, 1024, 600, 15822, 160,  56, 23, 1, 104, 3,
  54          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  55          FB_VMODE_NONINTERLACED},
  56
  57         /*      1024x600-85 VESA */
  58         {NULL,  85, 1024, 600, 13730, 168,  56, 26, 1, 112, 3,
  59          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  60          FB_VMODE_NONINTERLACED},
  61
  62         /*      720x480 */
  63         {NULL, 60,  720,  480,  37427, 88,   16, 13, 1,   72,  3,
  64          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  65          FB_VMODE_NONINTERLACED},
  66
  67         /*      1280x720                [1.78:1]        */
  68         {NULL, 60,  1280,  720,  13426, 162, 86, 22, 1,  136, 3,
  69          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  70          FB_VMODE_NONINTERLACED},
  71
  72         /*      1280x768@60 */
  73         {NULL, 60, 1280, 768, 12579, 192, 64, 20, 3, 128, 7,
  74          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  75          FB_VMODE_NONINTERLACED},
  76
  77         /*      1360 x 768      [1.77083:1]     */
  78         {NULL,  60, 1360, 768, 11804, 208,  64, 23, 1, 144, 3,
  79          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  80          FB_VMODE_NONINTERLACED},
  81
  82         /*      1368 x 768      [1.78:1]        */
  83         {NULL, 60,  1368,  768,  11647, 216, 72, 23, 1,  144, 3,
  84          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  85          FB_VMODE_NONINTERLACED},
  86
  87         /*      1440 x 900              [16:10] */
  88         {NULL, 60, 1440, 900, 9392, 232, 80, 28, 1, 152, 3,
  89          FB_SYNC_VERT_HIGH_ACT,
  90          FB_VMODE_NONINTERLACED},
  91
  92         /*      1440x960                [15:10] */
  93         {NULL, 60, 1440, 960, 8733, 240, 88, 30, 1, 152, 3,
  94          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  95          FB_VMODE_NONINTERLACED},
  96
  97         /*      1920x1080       [16:9]  */
  98         {NULL, 60, 1920, 1080, 6734, 148, 88, 41, 1, 44, 3,
  99          FB_SYNC_VERT_HIGH_ACT,
 100          FB_VMODE_NONINTERLACED},
 101 };
 102
 103 /* no hardware cursor supported under version 2.6.10, kernel bug */
 104 static int lynxfb_ops_cursor(struct fb_info *info, struct fb_cursor *fbcursor)
 105 {
 106         struct lynxfb_par *par;
 107         struct lynxfb_crtc *crtc;
 108         struct lynx_cursor *cursor;
 109
 110         par = info->par;
 111         crtc = &par->crtc;
 112         cursor = &crtc->cursor;
 113
 114         if (fbcursor->image.width > cursor->maxW ||
 115             fbcursor->image.height > cursor->maxH ||
 116             fbcursor->image.depth > 1) {
 117                 return -ENXIO;
 118         }
 119
 120         sm750_hw_cursor_disable(cursor);
 121         if (fbcursor->set & FB_CUR_SETSIZE)
 122                 sm750_hw_cursor_setSize(cursor,
 123                                         fbcursor->image.width,
 124                                         fbcursor->image.height);
 125
 126         if (fbcursor->set & FB_CUR_SETPOS)
 127                 sm750_hw_cursor_setPos(cursor,
 128                                        fbcursor->image.dx - info->var.xoffset,
 129                                        fbcursor->image.dy - info->var.yoffset);
 130
 131         if (fbcursor->set & FB_CUR_SETCMAP) {
 132                 /* get the 16bit color of kernel means */
 133                 u16 fg, bg;
 134
 135                 fg = ((info->cmap.red[fbcursor->image.fg_color] & 0xf800)) |
 136                      ((info->cmap.green[fbcursor->image.fg_color] & 0xfc00) >> 5) |
 137                      ((info->cmap.blue[fbcursor->image.fg_color] & 0xf800) >> 11);
 138
 139                 bg = ((info->cmap.red[fbcursor->image.bg_color] & 0xf800)) |
 140                      ((info->cmap.green[fbcursor->image.bg_color] & 0xfc00) >> 5) |
 141                      ((info->cmap.blue[fbcursor->image.bg_color] & 0xf800) >> 11);
 142
 143                 sm750_hw_cursor_setColor(cursor, fg, bg);
 144         }
 145
 146         if (fbcursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
 147                 sm750_hw_cursor_setData(cursor,
 148                                         fbcursor->rop,
 149                                         fbcursor->image.data,
 150                                         fbcursor->mask);
 151         }
 152
 153         if (fbcursor->enable)
 154                 sm750_hw_cursor_enable(cursor);
 155
 156         return 0;
 157 }
 158
 159 static void lynxfb_ops_fillrect(struct fb_info *info,
 160                                 const struct fb_fillrect *region)
 161 {
 162         struct lynxfb_par *par;
 163         struct sm750_dev *sm750_dev;
 164         unsigned int base, pitch, Bpp, rop;
 165         u32 color;
 166
 167         if (info->state != FBINFO_STATE_RUNNING)
 168                 return;
 169
 170         par = info->par;
 171         sm750_dev = par->dev;
 172
 173         /*
 174          * each time 2d function begin to work,below three variable always need
 175          * be set, seems we can put them together in some place
 176          */
 177         base = par->crtc.oScreen;
 178         pitch = info->fix.line_length;
 179         Bpp = info->var.bits_per_pixel >> 3;
 180
 181         color = (Bpp == 1) ? region->color :
 182                 ((u32 *)info->pseudo_palette)[region->color];
 183         rop = (region->rop != ROP_COPY) ? HW_ROP2_XOR : HW_ROP2_COPY;
 184
 185         /*
 186          * If not use spin_lock, system will die if user load driver
 187          * and immediately unload driver frequently (dual)
 188          * since they fb_count could change during the lifetime of
 189          * this lock, we are holding it for all cases.
 190          */
 191         spin_lock(&sm750_dev->slock);
 192
 193         sm750_dev->accel.de_fillrect(&sm750_dev->accel,
 194                                      base, pitch, Bpp,
 195                                      region->dx, region->dy,
 196                                      region->width, region->height,
 197                                      color, rop);
 198         spin_unlock(&sm750_dev->slock);
 199 }
 200
 201 static void lynxfb_ops_copyarea(struct fb_info *info,
 202                                 const struct fb_copyarea *region)
 203 {
 204         struct lynxfb_par *par;
 205         struct sm750_dev *sm750_dev;
 206         unsigned int base, pitch, Bpp;
 207
 208         par = info->par;
 209         sm750_dev = par->dev;
 210
 211         /*
 212          * each time 2d function begin to work,below three variable always need
 213          * be set, seems we can put them together in some place
 214          */
 215         base = par->crtc.oScreen;
 216         pitch = info->fix.line_length;
 217         Bpp = info->var.bits_per_pixel >> 3;
 218
 219         /*
 220          * If not use spin_lock, system will die if user load driver
 221          * and immediately unload driver frequently (dual)
 222          * since they fb_count could change during the lifetime of
 223          * this lock, we are holding it for all cases.
 224          */
 225         spin_lock(&sm750_dev->slock);
 226
 227         sm750_dev->accel.de_copyarea(&sm750_dev->accel,
 228                                      base, pitch, region->sx, region->sy,
 229                                      base, pitch, Bpp, region->dx, region->dy,
 230                                      region->width, region->height,
 231                                      HW_ROP2_COPY);
 232         spin_unlock(&sm750_dev->slock);
 233 }
 234
 235 static void lynxfb_ops_imageblit(struct fb_info *info,
 236                                  const struct fb_image *image)
 237 {
 238         unsigned int base, pitch, Bpp;
 239         unsigned int fgcol, bgcol;
 240         struct lynxfb_par *par;
 241         struct sm750_dev *sm750_dev;
 242
 243         par = info->par;
 244         sm750_dev = par->dev;
 245         /*
 246          * each time 2d function begin to work,below three variable always need
 247          * be set, seems we can put them together in some place
 248          */
 249         base = par->crtc.oScreen;
 250         pitch = info->fix.line_length;
 251         Bpp = info->var.bits_per_pixel >> 3;
 252
 253         /* TODO: Implement hardware acceleration for image->depth > 1 */
 254         if (image->depth != 1) {
 255                 cfb_imageblit(info, image);
 256                 return;
 257         }
 258
 259         if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
 260             info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
 261                 fgcol = ((u32 *)info->pseudo_palette)[image->fg_color];
 262                 bgcol = ((u32 *)info->pseudo_palette)[image->bg_color];
 263         } else {
 264                 fgcol = image->fg_color;
 265                 bgcol = image->bg_color;
 266         }
 267
 268         /*
 269          * If not use spin_lock, system will die if user load driver
 270          * and immediately unload driver frequently (dual)
 271          * since they fb_count could change during the lifetime of
 272          * this lock, we are holding it for all cases.
 273          */
 274         spin_lock(&sm750_dev->slock);
 275
 276         sm750_dev->accel.de_imageblit(&sm750_dev->accel,
 277                                       image->data, image->width >> 3, 0,
 278                                       base, pitch, Bpp,
 279                                       image->dx, image->dy,
 280                                       image->width, image->height,
 281                                       fgcol, bgcol, HW_ROP2_COPY);
 282         spin_unlock(&sm750_dev->slock);
 283 }
 284
 285 static int lynxfb_ops_pan_display(struct fb_var_screeninfo *var,
 286                                   struct fb_info *info)
 287 {
 288         struct lynxfb_par *par;
 289         struct lynxfb_crtc *crtc;
 290
 291         if (!info)
 292                 return -EINVAL;
 293
 294         par = info->par;
 295         crtc = &par->crtc;
 296         return hw_sm750_pan_display(crtc, var, info);
 297 }
 298
 299 static int lynxfb_ops_set_par(struct fb_info *info)
 300 {
 301         struct lynxfb_par *par;
 302         struct lynxfb_crtc *crtc;
 303         struct lynxfb_output *output;
 304         struct fb_var_screeninfo *var;
 305         struct fb_fix_screeninfo *fix;
 306         int ret;
 307         unsigned int line_length;
 308
 309         if (!info)
 310                 return -EINVAL;
 311
 312         ret = 0;
 313         par = info->par;
 314         crtc = &par->crtc;
 315         output = &par->output;
 316         var = &info->var;
 317         fix = &info->fix;
 318
 319         /* fix structure is not so FIX ... */
 320         line_length = var->xres_virtual * var->bits_per_pixel / 8;
 321         line_length = ALIGN(line_length, crtc->line_pad);
 322         fix->line_length = line_length;
 323         pr_info("fix->line_length = %d\n", fix->line_length);
 324
 325         /*
 326          * var->red,green,blue,transp are need to be set by driver
 327          * and these data should be set before setcolreg routine
 328          */
 329
 330         switch (var->bits_per_pixel) {
 331         case 8:
 332                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 333                 var->red.offset = 0;
 334                 var->red.length = 8;
 335                 var->green.offset = 0;
 336                 var->green.length = 8;
 337                 var->blue.offset = 0;
 338                 var->blue.length = 8;
 339                 var->transp.length = 0;
 340                 var->transp.offset = 0;
 341                 break;
 342         case 16:
 343                 var->red.offset = 11;
 344                 var->red.length = 5;
 345                 var->green.offset = 5;
 346                 var->green.length = 6;
 347                 var->blue.offset = 0;
 348                 var->blue.length = 5;
 349                 var->transp.length = 0;
 350                 var->transp.offset = 0;
 351                 fix->visual = FB_VISUAL_TRUECOLOR;
 352                 break;
 353         case 24:
 354         case 32:
 355                 var->red.offset = 16;
 356                 var->red.length = 8;
 357                 var->green.offset = 8;
 358                 var->green.length = 8;
 359                 var->blue.offset = 0;
 360                 var->blue.length = 8;
 361                 fix->visual = FB_VISUAL_TRUECOLOR;
 362                 break;
 363         default:
 364                 ret = -EINVAL;
 365                 break;
 366         }
 367         var->height = var->width = -1;
 368         var->accel_flags = 0;/*FB_ACCELF_TEXT;*/
 369
 370         if (ret) {
 371                 pr_err("pixel bpp format not satisfied\n.");
 372                 return ret;
 373         }
 374         ret = hw_sm750_crtc_setMode(crtc, var, fix);
 375         if (!ret)
 376                 ret = hw_sm750_output_setMode(output, var, fix);
 377         return ret;
 378 }
 379
 380 static inline unsigned int chan_to_field(unsigned int chan,
 381                                          struct fb_bitfield *bf)
 382 {
 383         chan &= 0xffff;
 384         chan >>= 16 - bf->length;
 385         return chan << bf->offset;
 386 }
 387
 388 #ifdef CONFIG_PM
 389 static int lynxfb_suspend(struct pci_dev *pdev, pm_message_t mesg)
 390 {
 391         struct fb_info *info;
 392         struct sm750_dev *sm750_dev;
 393         int ret;
 394
 395         if (mesg.event == pdev->dev.power.power_state.event)
 396                 return 0;
 397
 398         ret = 0;
 399         sm750_dev = pci_get_drvdata(pdev);
 400         switch (mesg.event) {
 401         case PM_EVENT_FREEZE:
 402         case PM_EVENT_PRETHAW:
 403                 pdev->dev.power.power_state = mesg;
 404                 return 0;
 405         }
 406
 407         console_lock();
 408         if (mesg.event & PM_EVENT_SLEEP) {
 409                 info = sm750_dev->fbinfo[0];
 410                 if (info)
 411                         /* 1 means do suspend */
 412                         fb_set_suspend(info, 1);
 413                 info = sm750_dev->fbinfo[1];
 414                 if (info)
 415                         /* 1 means do suspend */
 416                         fb_set_suspend(info, 1);
 417
 418                 ret = pci_save_state(pdev);
 419                 if (ret) {
 420                         dev_err(&pdev->dev,
 421                                 "error:%d occurred in pci_save_state\n", ret);
 422                         goto lynxfb_suspend_err;
 423                 }
 424
 425                 ret = pci_set_power_state(pdev, pci_choose_state(pdev, mesg));
 426                 if (ret) {
 427                         dev_err(&pdev->dev,
 428                                 "error:%d occurred in pci_set_power_state\n",
 429                                 ret);
 430                         goto lynxfb_suspend_err;
 431                 }
 432         }
 433
 434         pdev->dev.power.power_state = mesg;
 435
 436 lynxfb_suspend_err:
 437         console_unlock();
 438         return ret;
 439 }
 440
 441 static int lynxfb_resume(struct pci_dev *pdev)
 442 {
 443         struct fb_info *info;
 444         struct sm750_dev *sm750_dev;
 445
 446         struct lynxfb_par *par;
 447         struct lynxfb_crtc *crtc;
 448         struct lynx_cursor *cursor;
 449
 450         int ret;
 451
 452         ret = 0;
 453         sm750_dev = pci_get_drvdata(pdev);
 454
 455         console_lock();
 456
 457         ret = pci_set_power_state(pdev, PCI_D0);
 458         if (ret) {
 459                 dev_err(&pdev->dev,
 460                         "error:%d occurred in pci_set_power_state\n", ret);
 461                 goto lynxfb_resume_err;
 462         }
 463
 464         if (pdev->dev.power.power_state.event != PM_EVENT_FREEZE) {
 465                 pci_restore_state(pdev);
 466                 ret = pci_enable_device(pdev);
 467                 if (ret) {
 468                         dev_err(&pdev->dev,
 469                                 "error:%d occurred in pci_enable_device\n",
 470                                 ret);
 471                         goto lynxfb_resume_err;
 472                 }
 473                 pci_set_master(pdev);
 474         }
 475
 476         hw_sm750_inithw(sm750_dev, pdev);
 477
 478         info = sm750_dev->fbinfo[0];
 479
 480         if (info) {
 481                 par = info->par;
 482                 crtc = &par->crtc;
 483                 cursor = &crtc->cursor;
 484                 memset_io(cursor->vstart, 0x0, cursor->size);
 485                 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
 486                 lynxfb_ops_set_par(info);
 487                 fb_set_suspend(info, 0);
 488         }
 489
 490         info = sm750_dev->fbinfo[1];
 491
 492         if (info) {
 493                 par = info->par;
 494                 crtc = &par->crtc;
 495                 cursor = &crtc->cursor;
 496                 memset_io(cursor->vstart, 0x0, cursor->size);
 497                 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
 498                 lynxfb_ops_set_par(info);
 499                 fb_set_suspend(info, 0);
 500         }
 501
 502         pdev->dev.power.power_state.event = PM_EVENT_RESUME;
 503
 504 lynxfb_resume_err:
 505         console_unlock();
 506         return ret;
 507 }
 508 #endif
 509
 510 static int lynxfb_ops_check_var(struct fb_var_screeninfo *var,
 511                                 struct fb_info *info)
 512 {
 513         struct lynxfb_par *par;
 514         struct lynxfb_crtc *crtc;
 515         struct lynxfb_output *output;
 516         resource_size_t request;
 517
 518         par = info->par;
 519         crtc = &par->crtc;
 520         output = &par->output;
 521
 522         pr_debug("check var:%dx%d-%d\n",
 523                  var->xres,
 524                  var->yres,
 525                  var->bits_per_pixel);
 526
 527         switch (var->bits_per_pixel) {
 528         case 8:
 529                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 530                 var->red.offset = 0;
 531                 var->red.length = 8;
 532                 var->green.offset = 0;
 533                 var->green.length = 8;
 534                 var->blue.offset = 0;
 535                 var->blue.length = 8;
 536                 var->transp.length = 0;
 537                 var->transp.offset = 0;
 538                 break;
 539         case 16:
 540                 var->red.offset = 11;
 541                 var->red.length = 5;
 542                 var->green.offset = 5;
 543                 var->green.length = 6;
 544                 var->blue.offset = 0;
 545                 var->blue.length = 5;
 546                 var->transp.length = 0;
 547                 var->transp.offset = 0;
 548                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 549                 break;
 550         case 24:
 551         case 32:
 552                 var->red.offset = 16;
 553                 var->red.length = 8;
 554                 var->green.offset = 8;
 555                 var->green.length = 8;
 556                 var->blue.offset = 0;
 557                 var->blue.length = 8;
 558                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 559                 break;
 560         default:
 561                 pr_err("bpp %d not supported\n", var->bits_per_pixel);
 562                 return -EINVAL;
 563         }
 564         var->height = var->width = -1;
 565         var->accel_flags = 0;/* FB_ACCELF_TEXT; */
 566
 567         /* check if current fb's video memory big enought to hold the onscreen*/
 568         request = var->xres_virtual * (var->bits_per_pixel >> 3);
 569         /* defaulty crtc->channel go with par->index */
 570
 571         request = ALIGN(request, crtc->line_pad);
 572         request = request * var->yres_virtual;
 573         if (crtc->vidmem_size < request) {
 574                 pr_err("not enough video memory for mode\n");
 575                 return -ENOMEM;
 576         }
 577
 578         return hw_sm750_crtc_checkMode(crtc, var);
 579 }
 580
 581 static int lynxfb_ops_setcolreg(unsigned int regno,
 582                                 unsigned int red,
 583                                 unsigned int green,
 584                                 unsigned int blue,
 585                                 unsigned int transp,
 586                                 struct fb_info *info)
 587 {
 588         struct lynxfb_par *par;
 589         struct lynxfb_crtc *crtc;
 590         struct fb_var_screeninfo *var;
 591         int ret;
 592
 593         par = info->par;
 594         crtc = &par->crtc;
 595         var = &info->var;
 596         ret = 0;
 597
 598         if (regno > 256) {
 599                 pr_err("regno = %d\n", regno);
 600                 return -EINVAL;
 601         }
 602
 603         if (info->var.grayscale)
 604                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
 605
 606         if (var->bits_per_pixel == 8 &&
 607             info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
 608                 red >>= 8;
 609                 green >>= 8;
 610                 blue >>= 8;
 611                 ret = hw_sm750_setColReg(crtc, regno, red, green, blue);
 612                 goto exit;
 613         }
 614
 615         if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 256) {
 616                 u32 val;
 617
 618                 if (var->bits_per_pixel == 16 ||
 619                     var->bits_per_pixel == 32 ||
 620                     var->bits_per_pixel == 24) {
 621                         val = chan_to_field(red, &var->red);
 622                         val |= chan_to_field(green, &var->green);
 623                         val |= chan_to_field(blue, &var->blue);
 624                         par->pseudo_palette[regno] = val;
 625                         goto exit;
 626                 }
 627         }
 628
 629         ret = -EINVAL;
 630
 631 exit:
 632         return ret;
 633 }
 634
 635 static int lynxfb_ops_blank(int blank, struct fb_info *info)
 636 {
 637         struct lynxfb_par *par;
 638         struct lynxfb_output *output;
 639
 640         pr_debug("blank = %d.\n", blank);
 641         par = info->par;
 642         output = &par->output;
 643         return output->proc_setBLANK(output, blank);
 644 }
 645
 646 static int sm750fb_set_drv(struct lynxfb_par *par)
 647 {
 648         int ret;
 649         struct sm750_dev *sm750_dev;
 650         struct lynxfb_output *output;
 651         struct lynxfb_crtc *crtc;
 652
 653         ret = 0;
 654
 655         sm750_dev = par->dev;
 656         output = &par->output;
 657         crtc = &par->crtc;
 658
 659         crtc->vidmem_size = sm750_dev->vidmem_size;
 660         if (sm750_dev->fb_count > 1)
 661                 crtc->vidmem_size >>= 1;
 662
 663         /* setup crtc and output member */
 664         sm750_dev->hwCursor = g_hwcursor;
 665
 666         crtc->line_pad = 16;
 667         crtc->xpanstep = 8;
 668         crtc->ypanstep = 1;
 669         crtc->ywrapstep = 0;
 670
 671         output->proc_setBLANK = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 672                                  hw_sm750le_setBLANK : hw_sm750_setBLANK;
 673         /* chip specific phase */
 674         sm750_dev->accel.de_wait = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 675                                     hw_sm750le_deWait : hw_sm750_deWait;
 676         switch (sm750_dev->dataflow) {
 677         case sm750_simul_pri:
 678                 output->paths = sm750_pnc;
 679                 crtc->channel = sm750_primary;
 680                 crtc->oScreen = 0;
 681                 crtc->vScreen = sm750_dev->pvMem;
 682                 pr_info("use simul primary mode\n");
 683                 break;
 684         case sm750_simul_sec:
 685                 output->paths = sm750_pnc;
 686                 crtc->channel = sm750_secondary;
 687                 crtc->oScreen = 0;
 688                 crtc->vScreen = sm750_dev->pvMem;
 689                 break;
 690         case sm750_dual_normal:
 691                 if (par->index == 0) {
 692                         output->paths = sm750_panel;
 693                         crtc->channel = sm750_primary;
 694                         crtc->oScreen = 0;
 695                         crtc->vScreen = sm750_dev->pvMem;
 696                 } else {
 697                         output->paths = sm750_crt;
 698                         crtc->channel = sm750_secondary;
 699                         /* not consider of padding stuffs for oScreen,need fix */
 700                         crtc->oScreen = (sm750_dev->vidmem_size >> 1);
 701                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 702                 }
 703                 break;
 704         case sm750_dual_swap:
 705                 if (par->index == 0) {
 706                         output->paths = sm750_panel;
 707                         crtc->channel = sm750_secondary;
 708                         crtc->oScreen = 0;
 709                         crtc->vScreen = sm750_dev->pvMem;
 710                 } else {
 711                         output->paths = sm750_crt;
 712                         crtc->channel = sm750_primary;
 713                         /* not consider of padding stuffs for oScreen,need fix */
 714                         crtc->oScreen = (sm750_dev->vidmem_size >> 1);
 715                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 716                 }
 717                 break;
 718         default:
 719                 ret = -EINVAL;
 720         }
 721
 722         return ret;
 723 }
 724
 725 static struct fb_ops lynxfb_ops = {
 726         .owner = THIS_MODULE,
 727         .fb_check_var =  lynxfb_ops_check_var,
 728         .fb_set_par = lynxfb_ops_set_par,
 729         .fb_setcolreg = lynxfb_ops_setcolreg,
 730         .fb_blank = lynxfb_ops_blank,
 731         .fb_fillrect = cfb_fillrect,
 732         .fb_imageblit = cfb_imageblit,
 733         .fb_copyarea = cfb_copyarea,
 734         /* cursor */
 735         .fb_cursor = lynxfb_ops_cursor,
 736 };
 737
 738 static int lynxfb_set_fbinfo(struct fb_info *info, int index)
 739 {
 740         int i;
 741         struct lynxfb_par *par;
 742         struct sm750_dev *sm750_dev;
 743         struct lynxfb_crtc *crtc;
 744         struct lynxfb_output *output;
 745         struct fb_var_screeninfo *var;
 746         struct fb_fix_screeninfo *fix;
 747
 748         const struct fb_videomode *pdb[] = {
 749                 lynx750_ext, NULL, vesa_modes,
 750         };
 751         int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE};
 752         static const char *mdb_desc[] = {
 753                 "driver prepared modes",
 754                 "kernel prepared default modedb",
 755                 "kernel HELPERS prepared vesa_modes",
 756         };
 757
 758         static const char *fixId[2] = {
 759                 "sm750_fb1", "sm750_fb2",
 760         };
 761
 762         int ret, line_length;
 763
 764         ret = 0;
 765         par = (struct lynxfb_par *)info->par;
 766         sm750_dev = par->dev;
 767         crtc = &par->crtc;
 768         output = &par->output;
 769         var = &info->var;
 770         fix = &info->fix;
 771
 772         /* set index */
 773         par->index = index;
 774         output->channel = &crtc->channel;
 775         sm750fb_set_drv(par);
 776         lynxfb_ops.fb_pan_display = lynxfb_ops_pan_display;
 777
 778         /*
 779          * set current cursor variable and proc pointer,
 780          * must be set after crtc member initialized
 781          */
 782         crtc->cursor.offset = crtc->oScreen + crtc->vidmem_size - 1024;
 783         crtc->cursor.mmio = sm750_dev->pvReg +
 784                 0x800f0 + (int)crtc->channel * 0x140;
 785
 786         pr_info("crtc->cursor.mmio = %p\n", crtc->cursor.mmio);
 787         crtc->cursor.maxH = crtc->cursor.maxW = 64;
 788         crtc->cursor.size = crtc->cursor.maxH * crtc->cursor.maxW * 2 / 8;
 789         crtc->cursor.vstart = sm750_dev->pvMem + crtc->cursor.offset;
 790
 791         memset_io(crtc->cursor.vstart, 0, crtc->cursor.size);
 792         if (!g_hwcursor) {
 793                 lynxfb_ops.fb_cursor = NULL;
 794                 sm750_hw_cursor_disable(&crtc->cursor);
 795         }
 796
 797         /* set info->fbops, must be set before fb_find_mode */
 798         if (!sm750_dev->accel_off) {
 799                 /* use 2d acceleration */
 800                 lynxfb_ops.fb_fillrect = lynxfb_ops_fillrect;
 801                 lynxfb_ops.fb_copyarea = lynxfb_ops_copyarea;
 802                 lynxfb_ops.fb_imageblit = lynxfb_ops_imageblit;
 803         }
 804         info->fbops = &lynxfb_ops;
 805
 806         if (!g_fbmode[index]) {
 807                 g_fbmode[index] = g_def_fbmode;
 808                 if (index)
 809                         g_fbmode[index] = g_fbmode[0];
 810         }
 811
 812         for (i = 0; i < 3; i++) {
 813                 ret = fb_find_mode(var, info, g_fbmode[index],
 814                                    pdb[i], cdb[i], NULL, 8);
 815
 816                 if (ret == 1) {
 817                         pr_info("success! use specified mode:%s in %s\n",
 818                                 g_fbmode[index],
 819                                 mdb_desc[i]);
 820                         break;
 821                 } else if (ret == 2) {
 822                         pr_warn("use specified mode:%s in %s,with an ignored refresh rate\n",
 823                                 g_fbmode[index],
 824                                 mdb_desc[i]);
 825                         break;
 826                 } else if (ret == 3) {
 827                         pr_warn("wanna use default mode\n");
 828                         /*break;*/
 829                 } else if (ret == 4) {
 830                         pr_warn("fall back to any valid mode\n");
 831                 } else {
 832                         pr_warn("ret = %d,fb_find_mode failed,with %s\n",
 833                                 ret,
 834                                 mdb_desc[i]);
 835                 }
 836         }
 837
 838         /* some member of info->var had been set by fb_find_mode */
 839
 840         pr_info("Member of info->var is :\n"
 841                 "xres=%d\n"
 842                 "yres=%d\n"
 843                 "xres_virtual=%d\n"
 844                 "yres_virtual=%d\n"
 845                 "xoffset=%d\n"
 846                 "yoffset=%d\n"
 847                 "bits_per_pixel=%d\n"
 848                 " ...\n",
 849                 var->xres,
 850                 var->yres,
 851                 var->xres_virtual,
 852                 var->yres_virtual,
 853                 var->xoffset,
 854                 var->yoffset,
 855                 var->bits_per_pixel);
 856
 857         /* set par */
 858         par->info = info;
 859
 860         /* set info */
 861         line_length = ALIGN((var->xres_virtual * var->bits_per_pixel / 8),
 862                             crtc->line_pad);
 863
 864         info->pseudo_palette = &par->pseudo_palette[0];
 865         info->screen_base = crtc->vScreen;
 866         pr_debug("screen_base vaddr = %p\n", info->screen_base);
 867         info->screen_size = line_length * var->yres_virtual;
 868         info->flags = FBINFO_FLAG_DEFAULT | 0;
 869
 870         /* set info->fix */
 871         fix->type = FB_TYPE_PACKED_PIXELS;
 872         fix->type_aux = 0;
 873         fix->xpanstep = crtc->xpanstep;
 874         fix->ypanstep = crtc->ypanstep;
 875         fix->ywrapstep = crtc->ywrapstep;
 876         fix->accel = FB_ACCEL_SMI;
 877
 878         strlcpy(fix->id, fixId[index], sizeof(fix->id));
 879
 880         fix->smem_start = crtc->oScreen + sm750_dev->vidmem_start;
 881         pr_info("fix->smem_start = %lx\n", fix->smem_start);
 882         /*
 883          * according to mmap experiment from user space application,
 884          * fix->mmio_len should not larger than virtual size
 885          * (xres_virtual x yres_virtual x ByPP)
 886          * Below line maybe buggy when user mmap fb dev node and write
 887          * data into the bound over virtual size
 888          */
 889         fix->smem_len = crtc->vidmem_size;
 890         pr_info("fix->smem_len = %x\n", fix->smem_len);
 891         info->screen_size = fix->smem_len;
 892         fix->line_length = line_length;
 893         fix->mmio_start = sm750_dev->vidreg_start;
 894         pr_info("fix->mmio_start = %lx\n", fix->mmio_start);
 895         fix->mmio_len = sm750_dev->vidreg_size;
 896         pr_info("fix->mmio_len = %x\n", fix->mmio_len);
 897         switch (var->bits_per_pixel) {
 898         case 8:
 899                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 900                 break;
 901         case 16:
 902         case 32:
 903                 fix->visual = FB_VISUAL_TRUECOLOR;
 904                 break;
 905         }
 906
 907         /* set var */
 908         var->activate = FB_ACTIVATE_NOW;
 909         var->accel_flags = 0;
 910         var->vmode = FB_VMODE_NONINTERLACED;
 911
 912         pr_debug("#1 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
 913                  info->cmap.start, info->cmap.len,
 914                  info->cmap.red, info->cmap.green, info->cmap.blue,
 915                  info->cmap.transp);
 916
 917         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 918         if (ret < 0) {
 919                 pr_err("Could not allocate memory for cmap.\n");
 920                 goto exit;
 921         }
 922
 923         pr_debug("#2 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
 924                  info->cmap.start, info->cmap.len,
 925                  info->cmap.red, info->cmap.green, info->cmap.blue,
 926                  info->cmap.transp);
 927
 928 exit:
 929         lynxfb_ops_check_var(var, info);
 930         return ret;
 931 }
 932
 933 /*      chip specific g_option configuration routine */
 934 static void sm750fb_setup(struct sm750_dev *sm750_dev, char *src)
 935 {
 936         char *opt;
 937         int swap;
 938
 939         swap = 0;
 940
 941         sm750_dev->initParm.chip_clk = 0;
 942         sm750_dev->initParm.mem_clk = 0;
 943         sm750_dev->initParm.master_clk = 0;
 944         sm750_dev->initParm.powerMode = 0;
 945         sm750_dev->initParm.setAllEngOff = 0;
 946         sm750_dev->initParm.resetMemory = 1;
 947
 948         /* defaultly turn g_hwcursor on for both view */
 949         g_hwcursor = 3;
 950
 951         if (!src || !*src) {
 952                 dev_warn(&sm750_dev->pdev->dev, "no specific g_option.\n");
 953                 goto NO_PARAM;
 954         }
 955
 956         while ((opt = strsep(&src, ":")) != NULL && *opt != 0) {
 957                 dev_info(&sm750_dev->pdev->dev, "opt=%s\n", opt);
 958                 dev_info(&sm750_dev->pdev->dev, "src=%s\n", src);
 959
 960                 if (!strncmp(opt, "swap", strlen("swap"))) {
 961                         swap = 1;
 962                 } else if (!strncmp(opt, "nocrt", strlen("nocrt"))) {
 963                         sm750_dev->nocrt = 1;
 964                 } else if (!strncmp(opt, "36bit", strlen("36bit"))) {
 965                         sm750_dev->pnltype = sm750_doubleTFT;
 966                 } else if (!strncmp(opt, "18bit", strlen("18bit"))) {
 967                         sm750_dev->pnltype = sm750_dualTFT;
 968                 } else if (!strncmp(opt, "24bit", strlen("24bit"))) {
 969                         sm750_dev->pnltype = sm750_24TFT;
 970                 } else if (!strncmp(opt, "nohwc0", strlen("nohwc0"))) {
 971                         g_hwcursor &= ~0x1;
 972                 } else if (!strncmp(opt, "nohwc1", strlen("nohwc1"))) {
 973                         g_hwcursor &= ~0x2;
 974                 } else if (!strncmp(opt, "nohwc", strlen("nohwc"))) {
 975                         g_hwcursor = 0;
 976                 } else {
 977                         if (!g_fbmode[0]) {
 978                                 g_fbmode[0] = opt;
 979                                 dev_info(&sm750_dev->pdev->dev,
 980                                          "find fbmode0 : %s\n", g_fbmode[0]);
 981                         } else if (!g_fbmode[1]) {
 982                                 g_fbmode[1] = opt;
 983                                 dev_info(&sm750_dev->pdev->dev,
 984                                          "find fbmode1 : %s\n", g_fbmode[1]);
 985                         } else {
 986                                 dev_warn(&sm750_dev->pdev->dev, "How many view you wann set?\n");
 987                         }
 988                 }
 989         }
 990
 991 NO_PARAM:
 992         if (sm750_dev->revid != SM750LE_REVISION_ID) {
 993                 if (sm750_dev->fb_count > 1) {
 994                         if (swap)
 995                                 sm750_dev->dataflow = sm750_dual_swap;
 996                         else
 997                                 sm750_dev->dataflow = sm750_dual_normal;
 998                 } else {
 999                         if (swap)
1000                                 sm750_dev->dataflow = sm750_simul_sec;
1001                         else
1002                                 sm750_dev->dataflow = sm750_simul_pri;
1003                 }
1004         } else {
1005                 /* SM750LE only have one crt channel */
1006                 sm750_dev->dataflow = sm750_simul_sec;
1007                 /* sm750le do not have complex attributes */
1008                 sm750_dev->nocrt = 0;
1009         }
1010 }
1011
1012 static void sm750fb_frambuffer_release(struct sm750_dev *sm750_dev)
1013 {
1014         struct fb_info *fb_info;
1015
1016         while (sm750_dev->fb_count) {
1017                 fb_info = sm750_dev->fbinfo[sm750_dev->fb_count - 1];
1018                 unregister_framebuffer(fb_info);
1019                 framebuffer_release(fb_info);
1020                 sm750_dev->fb_count--;
1021         }
1022 }
1023
1024 static int sm750fb_frambuffer_alloc(struct sm750_dev *sm750_dev, int fbidx)
1025 {
1026         struct fb_info *fb_info;
1027         struct lynxfb_par *par;
1028         int err;
1029
1030         fb_info = framebuffer_alloc(sizeof(struct lynxfb_par),
1031                                     &sm750_dev->pdev->dev);
1032         if (!fb_info)
1033                 return -ENOMEM;
1034
1035         sm750_dev->fbinfo[fbidx] = fb_info;
1036         par = fb_info->par;
1037         par->dev = sm750_dev;
1038
1039         err = lynxfb_set_fbinfo(fb_info, fbidx);
1040         if (err)
1041                 goto release_fb;
1042
1043         err = register_framebuffer(fb_info);
1044         if (err < 0)
1045                 goto release_fb;
1046
1047         sm750_dev->fb_count++;
1048
1049         return 0;
1050
1051 release_fb:
1052         framebuffer_release(fb_info);
1053         return err;
1054 }
1055
1056 static int lynxfb_kick_out_firmware_fb(struct pci_dev *pdev)
1057 {
1058         struct apertures_struct *ap;
1059         bool primary = false;
1060
1061         ap = alloc_apertures(1);
1062         if (!ap)
1063                 return -ENOMEM;
1064
1065         ap->ranges[0].base = pci_resource_start(pdev, 0);
1066         ap->ranges[0].size = pci_resource_len(pdev, 0);
1067 #ifdef CONFIG_X86
1068         primary = pdev->resource[PCI_ROM_RESOURCE].flags &
1069                                         IORESOURCE_ROM_SHADOW;
1070 #endif
1071         remove_conflicting_framebuffers(ap, "sm750_fb1", primary);
1072         kfree(ap);
1073         return 0;
1074 }
1075
1076 static int lynxfb_pci_probe(struct pci_dev *pdev,
1077                             const struct pci_device_id *ent)
1078 {
1079         struct sm750_dev *sm750_dev = NULL;
1080         int max_fb;
1081         int fbidx;
1082         int err;
1083
1084         err = lynxfb_kick_out_firmware_fb(pdev);
1085         if (err)
1086                 return err;
1087
1088         /* enable device */
1089         err = pcim_enable_device(pdev);
1090         if (err)
1091                 return err;
1092
1093         err = -ENOMEM;
1094         sm750_dev = devm_kzalloc(&pdev->dev, sizeof(*sm750_dev), GFP_KERNEL);
1095         if (!sm750_dev)
1096                 return err;
1097
1098         sm750_dev->fbinfo[0] = sm750_dev->fbinfo[1] = NULL;
1099         sm750_dev->devid = pdev->device;
1100         sm750_dev->revid = pdev->revision;
1101         sm750_dev->pdev = pdev;
1102         sm750_dev->mtrr_off = g_nomtrr;
1103         sm750_dev->mtrr.vram = 0;
1104         sm750_dev->accel_off = g_noaccel;
1105         spin_lock_init(&sm750_dev->slock);
1106
1107         if (!sm750_dev->accel_off) {
1108                 /*
1109                  * hook deInit and 2d routines, notes that below hw_xxx
1110                  * routine can work on most of lynx chips
1111                  * if some chip need specific function,
1112                  * please hook it in smXXX_set_drv routine
1113                  */
1114                 sm750_dev->accel.de_init = sm750_hw_de_init;
1115                 sm750_dev->accel.de_fillrect = sm750_hw_fillrect;
1116                 sm750_dev->accel.de_copyarea = sm750_hw_copyarea;
1117                 sm750_dev->accel.de_imageblit = sm750_hw_imageblit;
1118         }
1119
1120         /* call chip specific setup routine  */
1121         sm750fb_setup(sm750_dev, g_settings);
1122
1123         /* call chip specific mmap routine */
1124         err = hw_sm750_map(sm750_dev, pdev);
1125         if (err)
1126                 return err;
1127
1128         if (!sm750_dev->mtrr_off)
1129                 sm750_dev->mtrr.vram = arch_phys_wc_add(sm750_dev->vidmem_start,
1130                                                         sm750_dev->vidmem_size);
1131
1132         memset_io(sm750_dev->pvMem, 0, sm750_dev->vidmem_size);
1133
1134         pci_set_drvdata(pdev, sm750_dev);
1135
1136         /* call chipInit routine */
1137         hw_sm750_inithw(sm750_dev, pdev);
1138
1139         /* allocate frame buffer info structures according to g_dualview */
1140         max_fb = g_dualview ? 2 : 1;
1141         for (fbidx = 0; fbidx < max_fb; fbidx++) {
1142                 err = sm750fb_frambuffer_alloc(sm750_dev, fbidx);
1143                 if (err)
1144                         goto release_fb;
1145         }
1146
1147         return 0;
1148
1149 release_fb:
1150         sm750fb_frambuffer_release(sm750_dev);
1151         return err;
1152 }
1153
1154 static void lynxfb_pci_remove(struct pci_dev *pdev)
1155 {
1156         struct sm750_dev *sm750_dev;
1157
1158         sm750_dev = pci_get_drvdata(pdev);
1159
1160         sm750fb_frambuffer_release(sm750_dev);
1161         arch_phys_wc_del(sm750_dev->mtrr.vram);
1162
1163         iounmap(sm750_dev->pvReg);
1164         iounmap(sm750_dev->pvMem);
1165         kfree(g_settings);
1166 }
1167
1168 static int __init lynxfb_setup(char *options)
1169 {
1170         int len;
1171         char *opt, *tmp;
1172
1173         if (!options || !*options) {
1174                 pr_warn("no options.\n");
1175                 return 0;
1176         }
1177
1178         pr_info("options:%s\n", options);
1179
1180         len = strlen(options) + 1;
1181         g_settings = kzalloc(len, GFP_KERNEL);
1182         if (!g_settings)
1183                 return -ENOMEM;
1184
1185         tmp = g_settings;
1186
1187         /*
1188          * Notes:
1189          * char * strsep(char **s,const char * ct);
1190          * @s: the string to be searched
1191          * @ct :the characters to search for
1192          *
1193          * strsep() updates @options to pointer after the first found token
1194          * it also returns the pointer ahead the token.
1195          */
1196         while ((opt = strsep(&options, ":")) != NULL) {
1197                 /* options that mean for any lynx chips are configured here */
1198                 if (!strncmp(opt, "noaccel", strlen("noaccel"))) {
1199                         g_noaccel = 1;
1200                 } else if (!strncmp(opt, "nomtrr", strlen("nomtrr"))) {
1201                         g_nomtrr = 1;
1202                 } else if (!strncmp(opt, "dual", strlen("dual"))) {
1203                         g_dualview = 1;
1204                 } else {
1205                         strcat(tmp, opt);
1206                         tmp += strlen(opt);
1207                         if (options)
1208                                 *tmp++ = ':';
1209                         else
1210                                 *tmp++ = 0;
1211                 }
1212         }
1213
1214         /* misc g_settings are transport to chip specific routines */
1215         pr_info("parameter left for chip specific analysis:%s\n", g_settings);
1216         return 0;
1217 }
1218
1219 static const struct pci_device_id smi_pci_table[] = {
1220         { PCI_DEVICE(0x126f, 0x0750), },
1221         {0,}
1222 };
1223
1224 MODULE_DEVICE_TABLE(pci, smi_pci_table);
1225
1226 static struct pci_driver lynxfb_driver = {
1227         .name =         "sm750fb",
1228         .id_table =     smi_pci_table,
1229         .probe =        lynxfb_pci_probe,
1230         .remove =       lynxfb_pci_remove,
1231 #ifdef CONFIG_PM
1232         .suspend = lynxfb_suspend,
1233         .resume = lynxfb_resume,
1234 #endif
1235 };
1236
1237 static int __init lynxfb_init(void)
1238 {
1239         char *option;
1240
1241 #ifdef MODULE
1242         option = g_option;
1243 #else
1244         if (fb_get_options("sm750fb", &option))
1245                 return -ENODEV;
1246 #endif
1247
1248         lynxfb_setup(option);
1249         return pci_register_driver(&lynxfb_driver);
1250 }
1251 module_init(lynxfb_init);
1252
1253 static void __exit lynxfb_exit(void)
1254 {
1255         pci_unregister_driver(&lynxfb_driver);
1256 }
1257 module_exit(lynxfb_exit);
1258
1259 module_param(g_option, charp, 0444);
1260
1261 MODULE_PARM_DESC(g_option,
1262                  "\n\t\tCommon options:\n"
1263                  "\t\tnoaccel:disable 2d capabilities\n"
1264                  "\t\tnomtrr:disable MTRR attribute for video memory\n"
1265                  "\t\tdualview:dual frame buffer feature enabled\n"
1266                  "\t\tnohwc:disable hardware cursor\n"
1267                  "\t\tUsual example:\n"
1268                  "\t\tinsmod ./sm750fb.ko g_option=\"noaccel,nohwc,1280x1024-8@60\"\n"
1269                  );
1270
1271 MODULE_AUTHOR("monk liu <monk.liu@siliconmotion.com>");
1272 MODULE_AUTHOR("Sudip Mukherjee <sudip@vectorindia.org>");
1273 MODULE_DESCRIPTION("Frame buffer driver for SM750 chipset");
1274 MODULE_LICENSE("Dual BSD/GPL");