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         resource_size_t request;
 516
 517         par = info->par;
 518         crtc = &par->crtc;
 519
 520         pr_debug("check var:%dx%d-%d\n",
 521                  var->xres,
 522                  var->yres,
 523                  var->bits_per_pixel);
 524
 525         switch (var->bits_per_pixel) {
 526         case 8:
 527                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 528                 var->red.offset = 0;
 529                 var->red.length = 8;
 530                 var->green.offset = 0;
 531                 var->green.length = 8;
 532                 var->blue.offset = 0;
 533                 var->blue.length = 8;
 534                 var->transp.length = 0;
 535                 var->transp.offset = 0;
 536                 break;
 537         case 16:
 538                 var->red.offset = 11;
 539                 var->red.length = 5;
 540                 var->green.offset = 5;
 541                 var->green.length = 6;
 542                 var->blue.offset = 0;
 543                 var->blue.length = 5;
 544                 var->transp.length = 0;
 545                 var->transp.offset = 0;
 546                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 547                 break;
 548         case 24:
 549         case 32:
 550                 var->red.offset = 16;
 551                 var->red.length = 8;
 552                 var->green.offset = 8;
 553                 var->green.length = 8;
 554                 var->blue.offset = 0;
 555                 var->blue.length = 8;
 556                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 557                 break;
 558         default:
 559                 pr_err("bpp %d not supported\n", var->bits_per_pixel);
 560                 return -EINVAL;
 561         }
 562         var->height = var->width = -1;
 563         var->accel_flags = 0;/* FB_ACCELF_TEXT; */
 564
 565         /* check if current fb's video memory big enought to hold the onscreen*/
 566         request = var->xres_virtual * (var->bits_per_pixel >> 3);
 567         /* defaulty crtc->channel go with par->index */
 568
 569         request = ALIGN(request, crtc->line_pad);
 570         request = request * var->yres_virtual;
 571         if (crtc->vidmem_size < request) {
 572                 pr_err("not enough video memory for mode\n");
 573                 return -ENOMEM;
 574         }
 575
 576         return hw_sm750_crtc_checkMode(crtc, var);
 577 }
 578
 579 static int lynxfb_ops_setcolreg(unsigned int regno,
 580                                 unsigned int red,
 581                                 unsigned int green,
 582                                 unsigned int blue,
 583                                 unsigned int transp,
 584                                 struct fb_info *info)
 585 {
 586         struct lynxfb_par *par;
 587         struct lynxfb_crtc *crtc;
 588         struct fb_var_screeninfo *var;
 589         int ret;
 590
 591         par = info->par;
 592         crtc = &par->crtc;
 593         var = &info->var;
 594         ret = 0;
 595
 596         if (regno > 256) {
 597                 pr_err("regno = %d\n", regno);
 598                 return -EINVAL;
 599         }
 600
 601         if (info->var.grayscale)
 602                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
 603
 604         if (var->bits_per_pixel == 8 &&
 605             info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
 606                 red >>= 8;
 607                 green >>= 8;
 608                 blue >>= 8;
 609                 ret = hw_sm750_setColReg(crtc, regno, red, green, blue);
 610                 goto exit;
 611         }
 612
 613         if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 256) {
 614                 u32 val;
 615
 616                 if (var->bits_per_pixel == 16 ||
 617                     var->bits_per_pixel == 32 ||
 618                     var->bits_per_pixel == 24) {
 619                         val = chan_to_field(red, &var->red);
 620                         val |= chan_to_field(green, &var->green);
 621                         val |= chan_to_field(blue, &var->blue);
 622                         par->pseudo_palette[regno] = val;
 623                         goto exit;
 624                 }
 625         }
 626
 627         ret = -EINVAL;
 628
 629 exit:
 630         return ret;
 631 }
 632
 633 static int lynxfb_ops_blank(int blank, struct fb_info *info)
 634 {
 635         struct lynxfb_par *par;
 636         struct lynxfb_output *output;
 637
 638         pr_debug("blank = %d.\n", blank);
 639         par = info->par;
 640         output = &par->output;
 641         return output->proc_setBLANK(output, blank);
 642 }
 643
 644 static int sm750fb_set_drv(struct lynxfb_par *par)
 645 {
 646         int ret;
 647         struct sm750_dev *sm750_dev;
 648         struct lynxfb_output *output;
 649         struct lynxfb_crtc *crtc;
 650
 651         ret = 0;
 652
 653         sm750_dev = par->dev;
 654         output = &par->output;
 655         crtc = &par->crtc;
 656
 657         crtc->vidmem_size = sm750_dev->vidmem_size;
 658         if (sm750_dev->fb_count > 1)
 659                 crtc->vidmem_size >>= 1;
 660
 661         /* setup crtc and output member */
 662         sm750_dev->hwCursor = g_hwcursor;
 663
 664         crtc->line_pad = 16;
 665         crtc->xpanstep = 8;
 666         crtc->ypanstep = 1;
 667         crtc->ywrapstep = 0;
 668
 669         output->proc_setBLANK = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 670                                  hw_sm750le_setBLANK : hw_sm750_setBLANK;
 671         /* chip specific phase */
 672         sm750_dev->accel.de_wait = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 673                                     hw_sm750le_deWait : hw_sm750_deWait;
 674         switch (sm750_dev->dataflow) {
 675         case sm750_simul_pri:
 676                 output->paths = sm750_pnc;
 677                 crtc->channel = sm750_primary;
 678                 crtc->oScreen = 0;
 679                 crtc->vScreen = sm750_dev->pvMem;
 680                 pr_info("use simul primary mode\n");
 681                 break;
 682         case sm750_simul_sec:
 683                 output->paths = sm750_pnc;
 684                 crtc->channel = sm750_secondary;
 685                 crtc->oScreen = 0;
 686                 crtc->vScreen = sm750_dev->pvMem;
 687                 break;
 688         case sm750_dual_normal:
 689                 if (par->index == 0) {
 690                         output->paths = sm750_panel;
 691                         crtc->channel = sm750_primary;
 692                         crtc->oScreen = 0;
 693                         crtc->vScreen = sm750_dev->pvMem;
 694                 } else {
 695                         output->paths = sm750_crt;
 696                         crtc->channel = sm750_secondary;
 697                         /* not consider of padding stuffs for oScreen,need fix */
 698                         crtc->oScreen = (sm750_dev->vidmem_size >> 1);
 699                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 700                 }
 701                 break;
 702         case sm750_dual_swap:
 703                 if (par->index == 0) {
 704                         output->paths = sm750_panel;
 705                         crtc->channel = sm750_secondary;
 706                         crtc->oScreen = 0;
 707                         crtc->vScreen = sm750_dev->pvMem;
 708                 } else {
 709                         output->paths = sm750_crt;
 710                         crtc->channel = sm750_primary;
 711                         /* not consider of padding stuffs for oScreen,need fix */
 712                         crtc->oScreen = (sm750_dev->vidmem_size >> 1);
 713                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 714                 }
 715                 break;
 716         default:
 717                 ret = -EINVAL;
 718         }
 719
 720         return ret;
 721 }
 722
 723 static struct fb_ops lynxfb_ops = {
 724         .owner = THIS_MODULE,
 725         .fb_check_var =  lynxfb_ops_check_var,
 726         .fb_set_par = lynxfb_ops_set_par,
 727         .fb_setcolreg = lynxfb_ops_setcolreg,
 728         .fb_blank = lynxfb_ops_blank,
 729         .fb_fillrect = cfb_fillrect,
 730         .fb_imageblit = cfb_imageblit,
 731         .fb_copyarea = cfb_copyarea,
 732         /* cursor */
 733         .fb_cursor = lynxfb_ops_cursor,
 734 };
 735
 736 static int lynxfb_set_fbinfo(struct fb_info *info, int index)
 737 {
 738         int i;
 739         struct lynxfb_par *par;
 740         struct sm750_dev *sm750_dev;
 741         struct lynxfb_crtc *crtc;
 742         struct lynxfb_output *output;
 743         struct fb_var_screeninfo *var;
 744         struct fb_fix_screeninfo *fix;
 745
 746         const struct fb_videomode *pdb[] = {
 747                 lynx750_ext, NULL, vesa_modes,
 748         };
 749         int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE};
 750         static const char *mdb_desc[] = {
 751                 "driver prepared modes",
 752                 "kernel prepared default modedb",
 753                 "kernel HELPERS prepared vesa_modes",
 754         };
 755
 756         static const char *fixId[2] = {
 757                 "sm750_fb1", "sm750_fb2",
 758         };
 759
 760         int ret, line_length;
 761
 762         ret = 0;
 763         par = (struct lynxfb_par *)info->par;
 764         sm750_dev = par->dev;
 765         crtc = &par->crtc;
 766         output = &par->output;
 767         var = &info->var;
 768         fix = &info->fix;
 769
 770         /* set index */
 771         par->index = index;
 772         output->channel = &crtc->channel;
 773         sm750fb_set_drv(par);
 774         lynxfb_ops.fb_pan_display = lynxfb_ops_pan_display;
 775
 776         /*
 777          * set current cursor variable and proc pointer,
 778          * must be set after crtc member initialized
 779          */
 780         crtc->cursor.offset = crtc->oScreen + crtc->vidmem_size - 1024;
 781         crtc->cursor.mmio = sm750_dev->pvReg +
 782                 0x800f0 + (int)crtc->channel * 0x140;
 783
 784         pr_info("crtc->cursor.mmio = %p\n", crtc->cursor.mmio);
 785         crtc->cursor.maxH = crtc->cursor.maxW = 64;
 786         crtc->cursor.size = crtc->cursor.maxH * crtc->cursor.maxW * 2 / 8;
 787         crtc->cursor.vstart = sm750_dev->pvMem + crtc->cursor.offset;
 788
 789         memset_io(crtc->cursor.vstart, 0, crtc->cursor.size);
 790         if (!g_hwcursor) {
 791                 lynxfb_ops.fb_cursor = NULL;
 792                 sm750_hw_cursor_disable(&crtc->cursor);
 793         }
 794
 795         /* set info->fbops, must be set before fb_find_mode */
 796         if (!sm750_dev->accel_off) {
 797                 /* use 2d acceleration */
 798                 lynxfb_ops.fb_fillrect = lynxfb_ops_fillrect;
 799                 lynxfb_ops.fb_copyarea = lynxfb_ops_copyarea;
 800                 lynxfb_ops.fb_imageblit = lynxfb_ops_imageblit;
 801         }
 802         info->fbops = &lynxfb_ops;
 803
 804         if (!g_fbmode[index]) {
 805                 g_fbmode[index] = g_def_fbmode;
 806                 if (index)
 807                         g_fbmode[index] = g_fbmode[0];
 808         }
 809
 810         for (i = 0; i < 3; i++) {
 811                 ret = fb_find_mode(var, info, g_fbmode[index],
 812                                    pdb[i], cdb[i], NULL, 8);
 813
 814                 if (ret == 1) {
 815                         pr_info("success! use specified mode:%s in %s\n",
 816                                 g_fbmode[index],
 817                                 mdb_desc[i]);
 818                         break;
 819                 } else if (ret == 2) {
 820                         pr_warn("use specified mode:%s in %s,with an ignored refresh rate\n",
 821                                 g_fbmode[index],
 822                                 mdb_desc[i]);
 823                         break;
 824                 } else if (ret == 3) {
 825                         pr_warn("wanna use default mode\n");
 826                         /*break;*/
 827                 } else if (ret == 4) {
 828                         pr_warn("fall back to any valid mode\n");
 829                 } else {
 830                         pr_warn("ret = %d,fb_find_mode failed,with %s\n",
 831                                 ret,
 832                                 mdb_desc[i]);
 833                 }
 834         }
 835
 836         /* some member of info->var had been set by fb_find_mode */
 837
 838         pr_info("Member of info->var is :\n"
 839                 "xres=%d\n"
 840                 "yres=%d\n"
 841                 "xres_virtual=%d\n"
 842                 "yres_virtual=%d\n"
 843                 "xoffset=%d\n"
 844                 "yoffset=%d\n"
 845                 "bits_per_pixel=%d\n"
 846                 " ...\n",
 847                 var->xres,
 848                 var->yres,
 849                 var->xres_virtual,
 850                 var->yres_virtual,
 851                 var->xoffset,
 852                 var->yoffset,
 853                 var->bits_per_pixel);
 854
 855         /* set par */
 856         par->info = info;
 857
 858         /* set info */
 859         line_length = ALIGN((var->xres_virtual * var->bits_per_pixel / 8),
 860                             crtc->line_pad);
 861
 862         info->pseudo_palette = &par->pseudo_palette[0];
 863         info->screen_base = crtc->vScreen;
 864         pr_debug("screen_base vaddr = %p\n", info->screen_base);
 865         info->screen_size = line_length * var->yres_virtual;
 866         info->flags = FBINFO_FLAG_DEFAULT | 0;
 867
 868         /* set info->fix */
 869         fix->type = FB_TYPE_PACKED_PIXELS;
 870         fix->type_aux = 0;
 871         fix->xpanstep = crtc->xpanstep;
 872         fix->ypanstep = crtc->ypanstep;
 873         fix->ywrapstep = crtc->ywrapstep;
 874         fix->accel = FB_ACCEL_SMI;
 875
 876         strlcpy(fix->id, fixId[index], sizeof(fix->id));
 877
 878         fix->smem_start = crtc->oScreen + sm750_dev->vidmem_start;
 879         pr_info("fix->smem_start = %lx\n", fix->smem_start);
 880         /*
 881          * according to mmap experiment from user space application,
 882          * fix->mmio_len should not larger than virtual size
 883          * (xres_virtual x yres_virtual x ByPP)
 884          * Below line maybe buggy when user mmap fb dev node and write
 885          * data into the bound over virtual size
 886          */
 887         fix->smem_len = crtc->vidmem_size;
 888         pr_info("fix->smem_len = %x\n", fix->smem_len);
 889         info->screen_size = fix->smem_len;
 890         fix->line_length = line_length;
 891         fix->mmio_start = sm750_dev->vidreg_start;
 892         pr_info("fix->mmio_start = %lx\n", fix->mmio_start);
 893         fix->mmio_len = sm750_dev->vidreg_size;
 894         pr_info("fix->mmio_len = %x\n", fix->mmio_len);
 895         switch (var->bits_per_pixel) {
 896         case 8:
 897                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 898                 break;
 899         case 16:
 900         case 24:
 901         case 32:
 902                 fix->visual = FB_VISUAL_TRUECOLOR;
 903                 break;
 904         }
 905
 906         /* set var */
 907         var->activate = FB_ACTIVATE_NOW;
 908         var->accel_flags = 0;
 909         var->vmode = FB_VMODE_NONINTERLACED;
 910
 911         pr_debug("#1 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
 912                  info->cmap.start, info->cmap.len,
 913                  info->cmap.red, info->cmap.green, info->cmap.blue,
 914                  info->cmap.transp);
 915
 916         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 917         if (ret < 0) {
 918                 pr_err("Could not allocate memory for cmap.\n");
 919                 goto exit;
 920         }
 921
 922         pr_debug("#2 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
 923                  info->cmap.start, info->cmap.len,
 924                  info->cmap.red, info->cmap.green, info->cmap.blue,
 925                  info->cmap.transp);
 926
 927 exit:
 928         lynxfb_ops_check_var(var, info);
 929         return ret;
 930 }
 931
 932 /*      chip specific g_option configuration routine */
 933 static void sm750fb_setup(struct sm750_dev *sm750_dev, char *src)
 934 {
 935         char *opt;
 936         int swap;
 937
 938         swap = 0;
 939
 940         sm750_dev->initParm.chip_clk = 0;
 941         sm750_dev->initParm.mem_clk = 0;
 942         sm750_dev->initParm.master_clk = 0;
 943         sm750_dev->initParm.powerMode = 0;
 944         sm750_dev->initParm.setAllEngOff = 0;
 945         sm750_dev->initParm.resetMemory = 1;
 946
 947         /* defaultly turn g_hwcursor on for both view */
 948         g_hwcursor = 3;
 949
 950         if (!src || !*src) {
 951                 dev_warn(&sm750_dev->pdev->dev, "no specific g_option.\n");
 952                 goto NO_PARAM;
 953         }
 954
 955         while ((opt = strsep(&src, ":")) != NULL && *opt != 0) {
 956                 dev_info(&sm750_dev->pdev->dev, "opt=%s\n", opt);
 957                 dev_info(&sm750_dev->pdev->dev, "src=%s\n", src);
 958
 959                 if (!strncmp(opt, "swap", strlen("swap"))) {
 960                         swap = 1;
 961                 } else if (!strncmp(opt, "nocrt", strlen("nocrt"))) {
 962                         sm750_dev->nocrt = 1;
 963                 } else if (!strncmp(opt, "36bit", strlen("36bit"))) {
 964                         sm750_dev->pnltype = sm750_doubleTFT;
 965                 } else if (!strncmp(opt, "18bit", strlen("18bit"))) {
 966                         sm750_dev->pnltype = sm750_dualTFT;
 967                 } else if (!strncmp(opt, "24bit", strlen("24bit"))) {
 968                         sm750_dev->pnltype = sm750_24TFT;
 969                 } else if (!strncmp(opt, "nohwc0", strlen("nohwc0"))) {
 970                         g_hwcursor &= ~0x1;
 971                 } else if (!strncmp(opt, "nohwc1", strlen("nohwc1"))) {
 972                         g_hwcursor &= ~0x2;
 973                 } else if (!strncmp(opt, "nohwc", strlen("nohwc"))) {
 974                         g_hwcursor = 0;
 975                 } else {
 976                         if (!g_fbmode[0]) {
 977                                 g_fbmode[0] = opt;
 978                                 dev_info(&sm750_dev->pdev->dev,
 979                                          "find fbmode0 : %s\n", g_fbmode[0]);
 980                         } else if (!g_fbmode[1]) {
 981                                 g_fbmode[1] = opt;
 982                                 dev_info(&sm750_dev->pdev->dev,
 983                                          "find fbmode1 : %s\n", g_fbmode[1]);
 984                         } else {
 985                                 dev_warn(&sm750_dev->pdev->dev, "How many view you wann set?\n");
 986                         }
 987                 }
 988         }
 989
 990 NO_PARAM:
 991         if (sm750_dev->revid != SM750LE_REVISION_ID) {
 992                 if (sm750_dev->fb_count > 1) {
 993                         if (swap)
 994                                 sm750_dev->dataflow = sm750_dual_swap;
 995                         else
 996                                 sm750_dev->dataflow = sm750_dual_normal;
 997                 } else {
 998                         if (swap)
 999                                 sm750_dev->dataflow = sm750_simul_sec;
1000                         else
1001                                 sm750_dev->dataflow = sm750_simul_pri;
1002                 }
1003         } else {
1004                 /* SM750LE only have one crt channel */
1005                 sm750_dev->dataflow = sm750_simul_sec;
1006                 /* sm750le do not have complex attributes */
1007                 sm750_dev->nocrt = 0;
1008         }
1009 }
1010
1011 static void sm750fb_frambuffer_release(struct sm750_dev *sm750_dev)
1012 {
1013         struct fb_info *fb_info;
1014
1015         while (sm750_dev->fb_count) {
1016                 fb_info = sm750_dev->fbinfo[sm750_dev->fb_count - 1];
1017                 unregister_framebuffer(fb_info);
1018                 framebuffer_release(fb_info);
1019                 sm750_dev->fb_count--;
1020         }
1021 }
1022
1023 static int sm750fb_frambuffer_alloc(struct sm750_dev *sm750_dev, int fbidx)
1024 {
1025         struct fb_info *fb_info;
1026         struct lynxfb_par *par;
1027         int err;
1028
1029         fb_info = framebuffer_alloc(sizeof(struct lynxfb_par),
1030                                     &sm750_dev->pdev->dev);
1031         if (!fb_info)
1032                 return -ENOMEM;
1033
1034         sm750_dev->fbinfo[fbidx] = fb_info;
1035         par = fb_info->par;
1036         par->dev = sm750_dev;
1037
1038         err = lynxfb_set_fbinfo(fb_info, fbidx);
1039         if (err)
1040                 goto release_fb;
1041
1042         err = register_framebuffer(fb_info);
1043         if (err < 0)
1044                 goto release_fb;
1045
1046         sm750_dev->fb_count++;
1047
1048         return 0;
1049
1050 release_fb:
1051         framebuffer_release(fb_info);
1052         return err;
1053 }
1054
1055 static int lynxfb_kick_out_firmware_fb(struct pci_dev *pdev)
1056 {
1057         struct apertures_struct *ap;
1058         bool primary = false;
1059
1060         ap = alloc_apertures(1);
1061         if (!ap)
1062                 return -ENOMEM;
1063
1064         ap->ranges[0].base = pci_resource_start(pdev, 0);
1065         ap->ranges[0].size = pci_resource_len(pdev, 0);
1066 #ifdef CONFIG_X86
1067         primary = pdev->resource[PCI_ROM_RESOURCE].flags &
1068                                         IORESOURCE_ROM_SHADOW;
1069 #endif
1070         remove_conflicting_framebuffers(ap, "sm750_fb1", primary);
1071         kfree(ap);
1072         return 0;
1073 }
1074
1075 static int lynxfb_pci_probe(struct pci_dev *pdev,
1076                             const struct pci_device_id *ent)
1077 {
1078         struct sm750_dev *sm750_dev = NULL;
1079         int max_fb;
1080         int fbidx;
1081         int err;
1082
1083         err = lynxfb_kick_out_firmware_fb(pdev);
1084         if (err)
1085                 return err;
1086
1087         /* enable device */
1088         err = pcim_enable_device(pdev);
1089         if (err)
1090                 return err;
1091
1092         err = -ENOMEM;
1093         sm750_dev = devm_kzalloc(&pdev->dev, sizeof(*sm750_dev), GFP_KERNEL);
1094         if (!sm750_dev)
1095                 return err;
1096
1097         sm750_dev->fbinfo[0] = sm750_dev->fbinfo[1] = NULL;
1098         sm750_dev->devid = pdev->device;
1099         sm750_dev->revid = pdev->revision;
1100         sm750_dev->pdev = pdev;
1101         sm750_dev->mtrr_off = g_nomtrr;
1102         sm750_dev->mtrr.vram = 0;
1103         sm750_dev->accel_off = g_noaccel;
1104         spin_lock_init(&sm750_dev->slock);
1105
1106         if (!sm750_dev->accel_off) {
1107                 /*
1108                  * hook deInit and 2d routines, notes that below hw_xxx
1109                  * routine can work on most of lynx chips
1110                  * if some chip need specific function,
1111                  * please hook it in smXXX_set_drv routine
1112                  */
1113                 sm750_dev->accel.de_init = sm750_hw_de_init;
1114                 sm750_dev->accel.de_fillrect = sm750_hw_fillrect;
1115                 sm750_dev->accel.de_copyarea = sm750_hw_copyarea;
1116                 sm750_dev->accel.de_imageblit = sm750_hw_imageblit;
1117         }
1118
1119         /* call chip specific setup routine  */
1120         sm750fb_setup(sm750_dev, g_settings);
1121
1122         /* call chip specific mmap routine */
1123         err = hw_sm750_map(sm750_dev, pdev);
1124         if (err)
1125                 return err;
1126
1127         if (!sm750_dev->mtrr_off)
1128                 sm750_dev->mtrr.vram = arch_phys_wc_add(sm750_dev->vidmem_start,
1129                                                         sm750_dev->vidmem_size);
1130
1131         memset_io(sm750_dev->pvMem, 0, sm750_dev->vidmem_size);
1132
1133         pci_set_drvdata(pdev, sm750_dev);
1134
1135         /* call chipInit routine */
1136         hw_sm750_inithw(sm750_dev, pdev);
1137
1138         /* allocate frame buffer info structures according to g_dualview */
1139         max_fb = g_dualview ? 2 : 1;
1140         for (fbidx = 0; fbidx < max_fb; fbidx++) {
1141                 err = sm750fb_frambuffer_alloc(sm750_dev, fbidx);
1142                 if (err)
1143                         goto release_fb;
1144         }
1145
1146         return 0;
1147
1148 release_fb:
1149         sm750fb_frambuffer_release(sm750_dev);
1150         return err;
1151 }
1152
1153 static void lynxfb_pci_remove(struct pci_dev *pdev)
1154 {
1155         struct sm750_dev *sm750_dev;
1156
1157         sm750_dev = pci_get_drvdata(pdev);
1158
1159         sm750fb_frambuffer_release(sm750_dev);
1160         arch_phys_wc_del(sm750_dev->mtrr.vram);
1161
1162         iounmap(sm750_dev->pvReg);
1163         iounmap(sm750_dev->pvMem);
1164         kfree(g_settings);
1165 }
1166
1167 static int __init lynxfb_setup(char *options)
1168 {
1169         int len;
1170         char *opt, *tmp;
1171
1172         if (!options || !*options) {
1173                 pr_warn("no options.\n");
1174                 return 0;
1175         }
1176
1177         pr_info("options:%s\n", options);
1178
1179         len = strlen(options) + 1;
1180         g_settings = kzalloc(len, GFP_KERNEL);
1181         if (!g_settings)
1182                 return -ENOMEM;
1183
1184         tmp = g_settings;
1185
1186         /*
1187          * Notes:
1188          * char * strsep(char **s,const char * ct);
1189          * @s: the string to be searched
1190          * @ct :the characters to search for
1191          *
1192          * strsep() updates @options to pointer after the first found token
1193          * it also returns the pointer ahead the token.
1194          */
1195         while ((opt = strsep(&options, ":")) != NULL) {
1196                 /* options that mean for any lynx chips are configured here */
1197                 if (!strncmp(opt, "noaccel", strlen("noaccel"))) {
1198                         g_noaccel = 1;
1199                 } else if (!strncmp(opt, "nomtrr", strlen("nomtrr"))) {
1200                         g_nomtrr = 1;
1201                 } else if (!strncmp(opt, "dual", strlen("dual"))) {
1202                         g_dualview = 1;
1203                 } else {
1204                         strcat(tmp, opt);
1205                         tmp += strlen(opt);
1206                         if (options)
1207                                 *tmp++ = ':';
1208                         else
1209                                 *tmp++ = 0;
1210                 }
1211         }
1212
1213         /* misc g_settings are transport to chip specific routines */
1214         pr_info("parameter left for chip specific analysis:%s\n", g_settings);
1215         return 0;
1216 }
1217
1218 static const struct pci_device_id smi_pci_table[] = {
1219         { PCI_DEVICE(0x126f, 0x0750), },
1220         {0,}
1221 };
1222
1223 MODULE_DEVICE_TABLE(pci, smi_pci_table);
1224
1225 static struct pci_driver lynxfb_driver = {
1226         .name =         "sm750fb",
1227         .id_table =     smi_pci_table,
1228         .probe =        lynxfb_pci_probe,
1229         .remove =       lynxfb_pci_remove,
1230 #ifdef CONFIG_PM
1231         .suspend = lynxfb_suspend,
1232         .resume = lynxfb_resume,
1233 #endif
1234 };
1235
1236 static int __init lynxfb_init(void)
1237 {
1238         char *option;
1239
1240 #ifdef MODULE
1241         option = g_option;
1242 #else
1243         if (fb_get_options("sm750fb", &option))
1244                 return -ENODEV;
1245 #endif
1246
1247         lynxfb_setup(option);
1248         return pci_register_driver(&lynxfb_driver);
1249 }
1250 module_init(lynxfb_init);
1251
1252 static void __exit lynxfb_exit(void)
1253 {
1254         pci_unregister_driver(&lynxfb_driver);
1255 }
1256 module_exit(lynxfb_exit);
1257
1258 module_param(g_option, charp, 0444);
1259
1260 MODULE_PARM_DESC(g_option,
1261                  "\n\t\tCommon options:\n"
1262                  "\t\tnoaccel:disable 2d capabilities\n"
1263                  "\t\tnomtrr:disable MTRR attribute for video memory\n"
1264                  "\t\tdualview:dual frame buffer feature enabled\n"
1265                  "\t\tnohwc:disable hardware cursor\n"
1266                  "\t\tUsual example:\n"
1267                  "\t\tinsmod ./sm750fb.ko g_option=\"noaccel,nohwc,1280x1024-8@60\"\n"
1268                  );
1269
1270 MODULE_AUTHOR("monk liu <monk.liu@siliconmotion.com>");
1271 MODULE_AUTHOR("Sudip Mukherjee <sudip@vectorindia.org>");
1272 MODULE_DESCRIPTION("Frame buffer driver for SM750 chipset");
1273 MODULE_LICENSE("Dual BSD/GPL");