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/vmalloc.h>
  17 #include <linux/pagemap.h>
  18 #include <linux/console.h>
  19 #include <asm/fb.h>
  20 #include "sm750.h"
  21 #include "sm750_accel.h"
  22 #include "sm750_cursor.h"
  23
  24 #include "modedb.h"
  25
  26 /*
  27  * #ifdef __BIG_ENDIAN
  28  * ssize_t lynxfb_ops_write(struct fb_info *info, const char __user *buf,
  29  * size_t count, loff_t *ppos);
  30  * ssize_t lynxfb_ops_read(struct fb_info *info, char __user *buf,
  31  * size_t count, loff_t *ppos);
  32  * #endif
  33  */
  34
  35 /* common var for all device */
  36 static int g_hwcursor = 1;
  37 static int g_noaccel;
  38 static int g_nomtrr;
  39 static const char *g_fbmode[] = {NULL, NULL};
  40 static const char *g_def_fbmode = "800x600-16@60";
  41 static char *g_settings;
  42 static int g_dualview;
  43 static char *g_option;
  44
  45 static const struct fb_videomode lynx750_ext[] = {
  46         /*      1024x600-60 VESA        [1.71:1] */
  47         {NULL,  60, 1024, 600, 20423, 144,  40, 18, 1, 104, 3,
  48          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  49          FB_VMODE_NONINTERLACED},
  50
  51         /*      1024x600-70 VESA */
  52         {NULL,  70, 1024, 600, 17211, 152,  48, 21, 1, 104, 3,
  53          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  54          FB_VMODE_NONINTERLACED},
  55
  56         /*      1024x600-75 VESA */
  57         {NULL,  75, 1024, 600, 15822, 160,  56, 23, 1, 104, 3,
  58          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  59          FB_VMODE_NONINTERLACED},
  60
  61         /*      1024x600-85 VESA */
  62         {NULL,  85, 1024, 600, 13730, 168,  56, 26, 1, 112, 3,
  63          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  64          FB_VMODE_NONINTERLACED},
  65
  66         /*      720x480 */
  67         {NULL, 60,  720,  480,  37427, 88,   16, 13, 1,   72,  3,
  68          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  69          FB_VMODE_NONINTERLACED},
  70
  71         /*      1280x720                [1.78:1]        */
  72         {NULL, 60,  1280,  720,  13426, 162, 86, 22, 1,  136, 3,
  73          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  74          FB_VMODE_NONINTERLACED},
  75
  76         /*      1280x768@60 */
  77         {NULL, 60, 1280, 768, 12579, 192, 64, 20, 3, 128, 7,
  78          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  79          FB_VMODE_NONINTERLACED},
  80
  81         /*      1360 x 768      [1.77083:1]     */
  82         {NULL,  60, 1360, 768, 11804, 208,  64, 23, 1, 144, 3,
  83          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  84          FB_VMODE_NONINTERLACED},
  85
  86         /*      1368 x 768      [1.78:1]        */
  87         {NULL, 60,  1368,  768,  11647, 216, 72, 23, 1,  144, 3,
  88          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  89          FB_VMODE_NONINTERLACED},
  90
  91         /*      1440 x 900              [16:10] */
  92         {NULL, 60, 1440, 900, 9392, 232, 80, 28, 1, 152, 3,
  93          FB_SYNC_VERT_HIGH_ACT,
  94          FB_VMODE_NONINTERLACED},
  95
  96         /*      1440x960                [15:10] */
  97         {NULL, 60, 1440, 960, 8733, 240, 88, 30, 1, 152, 3,
  98          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  99          FB_VMODE_NONINTERLACED},
 100
 101         /*      1920x1080       [16:9]  */
 102         {NULL, 60, 1920, 1080, 6734, 148, 88, 41, 1, 44, 3,
 103          FB_SYNC_VERT_HIGH_ACT,
 104          FB_VMODE_NONINTERLACED},
 105 };
 106
 107
 108 /* no hardware cursor supported under version 2.6.10, kernel bug */
 109 static int lynxfb_ops_cursor(struct fb_info *info, struct fb_cursor *fbcursor)
 110 {
 111         struct lynxfb_par *par;
 112         struct lynxfb_crtc *crtc;
 113         struct lynx_cursor *cursor;
 114
 115         par = info->par;
 116         crtc = &par->crtc;
 117         cursor = &crtc->cursor;
 118
 119         if (fbcursor->image.width > cursor->maxW ||
 120            fbcursor->image.height > cursor->maxH ||
 121            fbcursor->image.depth > 1) {
 122                 return -ENXIO;
 123         }
 124
 125         hw_cursor_disable(cursor);
 126         if (fbcursor->set & FB_CUR_SETSIZE)
 127                 hw_cursor_setSize(cursor,
 128                                   fbcursor->image.width,
 129                                   fbcursor->image.height);
 130
 131         if (fbcursor->set & FB_CUR_SETPOS)
 132                 hw_cursor_setPos(cursor,
 133                                  fbcursor->image.dx - info->var.xoffset,
 134                                  fbcursor->image.dy - info->var.yoffset);
 135
 136         if (fbcursor->set & FB_CUR_SETCMAP) {
 137                 /* get the 16bit color of kernel means */
 138                 u16 fg, bg;
 139
 140                 fg = ((info->cmap.red[fbcursor->image.fg_color] & 0xf800)) |
 141                       ((info->cmap.green[fbcursor->image.fg_color] & 0xfc00) >> 5) |
 142                       ((info->cmap.blue[fbcursor->image.fg_color] & 0xf800) >> 11);
 143
 144                 bg = ((info->cmap.red[fbcursor->image.bg_color] & 0xf800)) |
 145                       ((info->cmap.green[fbcursor->image.bg_color] & 0xfc00) >> 5) |
 146                       ((info->cmap.blue[fbcursor->image.bg_color] & 0xf800) >> 11);
 147
 148                 hw_cursor_setColor(cursor, fg, bg);
 149         }
 150
 151         if (fbcursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
 152                 hw_cursor_setData(cursor,
 153                                   fbcursor->rop,
 154                                   fbcursor->image.data,
 155                                   fbcursor->mask);
 156         }
 157
 158         if (fbcursor->enable)
 159                 hw_cursor_enable(cursor);
 160
 161         return 0;
 162 }
 163
 164 static void lynxfb_ops_fillrect(struct fb_info *info,
 165                                 const struct fb_fillrect *region)
 166 {
 167         struct lynxfb_par *par;
 168         struct sm750_dev *sm750_dev;
 169         unsigned int base, pitch, Bpp, rop;
 170         u32 color;
 171
 172         if (info->state != FBINFO_STATE_RUNNING)
 173                 return;
 174
 175         par = info->par;
 176         sm750_dev = par->dev;
 177
 178         /*
 179          * each time 2d function begin to work,below three variable always need
 180          * be set, seems we can put them together in some place
 181          */
 182         base = par->crtc.oScreen;
 183         pitch = info->fix.line_length;
 184         Bpp = info->var.bits_per_pixel >> 3;
 185
 186         color = (Bpp == 1) ? region->color :
 187                 ((u32 *)info->pseudo_palette)[region->color];
 188         rop = (region->rop != ROP_COPY) ? HW_ROP2_XOR : HW_ROP2_COPY;
 189
 190         /*
 191          * If not use spin_lock,system will die if user load driver
 192          * and immediately unload driver frequently (dual)
 193          */
 194         if (sm750_dev->dual)
 195                 spin_lock(&sm750_dev->slock);
 196
 197         sm750_dev->accel.de_fillrect(&sm750_dev->accel,
 198                                      base, pitch, Bpp,
 199                                      region->dx, region->dy,
 200                                      region->width, region->height,
 201                                      color, rop);
 202         if (sm750_dev->dual)
 203                 spin_unlock(&sm750_dev->slock);
 204 }
 205
 206 static void lynxfb_ops_copyarea(struct fb_info *info,
 207                                 const struct fb_copyarea *region)
 208 {
 209         struct lynxfb_par *par;
 210         struct sm750_dev *sm750_dev;
 211         unsigned int base, pitch, Bpp;
 212
 213         par = info->par;
 214         sm750_dev = par->dev;
 215
 216         /*
 217          * each time 2d function begin to work,below three variable always need
 218          * be set, seems we can put them together in some place
 219          */
 220         base = par->crtc.oScreen;
 221         pitch = info->fix.line_length;
 222         Bpp = info->var.bits_per_pixel >> 3;
 223
 224         /*
 225          * If not use spin_lock, system will die if user load driver
 226          * and immediately unload driver frequently (dual)
 227          */
 228         if (sm750_dev->dual)
 229                 spin_lock(&sm750_dev->slock);
 230
 231         sm750_dev->accel.de_copyarea(&sm750_dev->accel,
 232                                      base, pitch, region->sx, region->sy,
 233                                      base, pitch, Bpp, region->dx, region->dy,
 234                                      region->width, region->height,
 235                                      HW_ROP2_COPY);
 236         if (sm750_dev->dual)
 237                 spin_unlock(&sm750_dev->slock);
 238 }
 239
 240 static void lynxfb_ops_imageblit(struct fb_info *info,
 241                                  const struct fb_image *image)
 242 {
 243         unsigned int base, pitch, Bpp;
 244         unsigned int fgcol, bgcol;
 245         struct lynxfb_par *par;
 246         struct sm750_dev *sm750_dev;
 247
 248         par = info->par;
 249         sm750_dev = par->dev;
 250         /*
 251          * each time 2d function begin to work,below three variable always need
 252          * be set, seems we can put them together in some place
 253          */
 254         base = par->crtc.oScreen;
 255         pitch = info->fix.line_length;
 256         Bpp = info->var.bits_per_pixel >> 3;
 257
 258         /* TODO: Implement hardware acceleration for image->depth > 1 */
 259         if (image->depth != 1) {
 260                 cfb_imageblit(info, image);
 261                 return;
 262         }
 263
 264         if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
 265             info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
 266                 fgcol = ((u32 *)info->pseudo_palette)[image->fg_color];
 267                 bgcol = ((u32 *)info->pseudo_palette)[image->bg_color];
 268         } else {
 269                 fgcol = image->fg_color;
 270                 bgcol = image->bg_color;
 271         }
 272
 273         /*
 274          * If not use spin_lock, system will die if user load driver
 275          * and immediately unload driver frequently (dual)
 276          */
 277         if (sm750_dev->dual)
 278                 spin_lock(&sm750_dev->slock);
 279
 280         sm750_dev->accel.de_imageblit(&sm750_dev->accel,
 281                                       image->data, image->width >> 3, 0,
 282                                       base, pitch, Bpp,
 283                                       image->dx, image->dy,
 284                                       image->width, image->height,
 285                                       fgcol, bgcol, HW_ROP2_COPY);
 286         if (sm750_dev->dual)
 287                 spin_unlock(&sm750_dev->slock);
 288 }
 289
 290 static int lynxfb_ops_pan_display(struct fb_var_screeninfo *var,
 291                                   struct fb_info *info)
 292 {
 293         struct lynxfb_par *par;
 294         struct lynxfb_crtc *crtc;
 295
 296         if (!info)
 297                 return -EINVAL;
 298
 299         par = info->par;
 300         crtc = &par->crtc;
 301         return hw_sm750_pan_display(crtc, var, info);
 302 }
 303
 304 static int lynxfb_ops_set_par(struct fb_info *info)
 305 {
 306         struct lynxfb_par *par;
 307         struct lynxfb_crtc *crtc;
 308         struct lynxfb_output *output;
 309         struct fb_var_screeninfo *var;
 310         struct fb_fix_screeninfo *fix;
 311         int ret;
 312         unsigned int line_length;
 313
 314         if (!info)
 315                 return -EINVAL;
 316
 317         ret = 0;
 318         par = info->par;
 319         crtc = &par->crtc;
 320         output = &par->output;
 321         var = &info->var;
 322         fix = &info->fix;
 323
 324         /* fix structur is not so FIX ... */
 325         line_length = var->xres_virtual * var->bits_per_pixel / 8;
 326         line_length = ALIGN(line_length, crtc->line_pad);
 327         fix->line_length = line_length;
 328         pr_info("fix->line_length = %d\n", fix->line_length);
 329
 330         /*
 331          * var->red,green,blue,transp are need to be set by driver
 332          * and these data should be set before setcolreg routine
 333          */
 334
 335         switch (var->bits_per_pixel) {
 336         case 8:
 337                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 338                 var->red.offset = 0;
 339                 var->red.length = 8;
 340                 var->green.offset = 0;
 341                 var->green.length = 8;
 342                 var->blue.offset = 0;
 343                 var->blue.length = 8;
 344                 var->transp.length = 0;
 345                 var->transp.offset = 0;
 346                 break;
 347         case 16:
 348                 var->red.offset = 11;
 349                 var->red.length = 5;
 350                 var->green.offset = 5;
 351                 var->green.length = 6;
 352                 var->blue.offset = 0;
 353                 var->blue.length = 5;
 354                 var->transp.length = 0;
 355                 var->transp.offset = 0;
 356                 fix->visual = FB_VISUAL_TRUECOLOR;
 357                 break;
 358         case 24:
 359         case 32:
 360                 var->red.offset = 16;
 361                 var->red.length = 8;
 362                 var->green.offset = 8;
 363                 var->green.length = 8;
 364                 var->blue.offset = 0;
 365                 var->blue.length = 8;
 366                 fix->visual = FB_VISUAL_TRUECOLOR;
 367                 break;
 368         default:
 369                 ret = -EINVAL;
 370                 break;
 371         }
 372         var->height = var->width = -1;
 373         var->accel_flags = 0;/*FB_ACCELF_TEXT;*/
 374
 375         if (ret) {
 376                 pr_err("pixel bpp format not satisfied\n.");
 377                 return ret;
 378         }
 379         ret = hw_sm750_crtc_setMode(crtc, var, fix);
 380         if (!ret)
 381                 ret = hw_sm750_output_setMode(output, var, fix);
 382         return ret;
 383 }
 384
 385 static inline unsigned int chan_to_field(unsigned int chan,
 386                                          struct fb_bitfield *bf)
 387 {
 388         chan &= 0xffff;
 389         chan >>= 16 - bf->length;
 390         return chan << bf->offset;
 391 }
 392
 393 #ifdef CONFIG_PM
 394 static int lynxfb_suspend(struct pci_dev *pdev, pm_message_t mesg)
 395 {
 396         struct fb_info *info;
 397         struct sm750_dev *sm750_dev;
 398         int ret;
 399
 400         if (mesg.event == pdev->dev.power.power_state.event)
 401                 return 0;
 402
 403         ret = 0;
 404         sm750_dev = pci_get_drvdata(pdev);
 405         switch (mesg.event) {
 406         case PM_EVENT_FREEZE:
 407         case PM_EVENT_PRETHAW:
 408                 pdev->dev.power.power_state = mesg;
 409                 return 0;
 410         }
 411
 412         console_lock();
 413         if (mesg.event & PM_EVENT_SLEEP) {
 414                 info = sm750_dev->fbinfo[0];
 415                 if (info)
 416                         /* 1 means do suspend */
 417                         fb_set_suspend(info, 1);
 418                 info = sm750_dev->fbinfo[1];
 419                 if (info)
 420                         /* 1 means do suspend */
 421                         fb_set_suspend(info, 1);
 422
 423                 ret = pci_save_state(pdev);
 424                 if (ret) {
 425                         pr_err("error:%d occurred in pci_save_state\n", ret);
 426                         return ret;
 427                 }
 428
 429                 pci_disable_device(pdev);
 430                 ret = pci_set_power_state(pdev, pci_choose_state(pdev, mesg));
 431                 if (ret) {
 432                         pr_err("error:%d occurred in pci_set_power_state\n", ret);
 433                         return ret;
 434                 }
 435         }
 436
 437         pdev->dev.power.power_state = mesg;
 438         console_unlock();
 439         return ret;
 440 }
 441
 442 static int lynxfb_resume(struct pci_dev *pdev)
 443 {
 444         struct fb_info *info;
 445         struct sm750_dev *sm750_dev;
 446
 447         struct lynxfb_par *par;
 448         struct lynxfb_crtc *crtc;
 449         struct lynx_cursor *cursor;
 450
 451         int ret;
 452
 453         ret = 0;
 454         sm750_dev = pci_get_drvdata(pdev);
 455
 456         console_lock();
 457
 458         ret = pci_set_power_state(pdev, PCI_D0);
 459         if (ret) {
 460                 pr_err("error:%d occurred in pci_set_power_state\n", ret);
 461                 return ret;
 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                         pr_err("error:%d occurred in pci_enable_device\n", ret);
 469                         return ret;
 470                 }
 471                 pci_set_master(pdev);
 472         }
 473
 474         hw_sm750_inithw(sm750_dev, pdev);
 475
 476         info = sm750_dev->fbinfo[0];
 477
 478         if (info) {
 479                 par = info->par;
 480                 crtc = &par->crtc;
 481                 cursor = &crtc->cursor;
 482                 memset_io(cursor->vstart, 0x0, cursor->size);
 483                 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
 484                 lynxfb_ops_set_par(info);
 485                 fb_set_suspend(info, 0);
 486         }
 487
 488         info = sm750_dev->fbinfo[1];
 489
 490         if (info) {
 491                 par = info->par;
 492                 crtc = &par->crtc;
 493                 cursor = &crtc->cursor;
 494                 memset_io(cursor->vstart, 0x0, cursor->size);
 495                 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
 496                 lynxfb_ops_set_par(info);
 497                 fb_set_suspend(info, 0);
 498         }
 499
 500         pdev->dev.power.power_state.event = PM_EVENT_RESUME;
 501         console_unlock();
 502         return ret;
 503 }
 504 #endif
 505
 506 static int lynxfb_ops_check_var(struct fb_var_screeninfo *var,
 507                                 struct fb_info *info)
 508 {
 509         struct lynxfb_par *par;
 510         struct lynxfb_crtc *crtc;
 511         struct lynxfb_output *output;
 512         resource_size_t request;
 513
 514         par = info->par;
 515         crtc = &par->crtc;
 516         output = &par->output;
 517
 518         pr_debug("check var:%dx%d-%d\n",
 519                  var->xres,
 520                  var->yres,
 521                  var->bits_per_pixel);
 522
 523         switch (var->bits_per_pixel) {
 524         case 8:
 525                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 526                 var->red.offset = 0;
 527                 var->red.length = 8;
 528                 var->green.offset = 0;
 529                 var->green.length = 8;
 530                 var->blue.offset = 0;
 531                 var->blue.length = 8;
 532                 var->transp.length = 0;
 533                 var->transp.offset = 0;
 534                 break;
 535         case 16:
 536                 var->red.offset = 11;
 537                 var->red.length = 5;
 538                 var->green.offset = 5;
 539                 var->green.length = 6;
 540                 var->blue.offset = 0;
 541                 var->blue.length = 5;
 542                 var->transp.length = 0;
 543                 var->transp.offset = 0;
 544                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 545                 break;
 546         case 24:
 547         case 32:
 548                 var->red.offset = 16;
 549                 var->red.length = 8;
 550                 var->green.offset = 8;
 551                 var->green.length = 8;
 552                 var->blue.offset = 0;
 553                 var->blue.length = 8;
 554                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 555                 break;
 556         default:
 557                 pr_err("bpp %d not supported\n", var->bits_per_pixel);
 558                 return -EINVAL;
 559         }
 560         var->height = var->width = -1;
 561         var->accel_flags = 0;/* FB_ACCELF_TEXT; */
 562
 563         /* check if current fb's video memory big enought to hold the onscreen*/
 564         request = var->xres_virtual * (var->bits_per_pixel >> 3);
 565         /* defaulty crtc->channel go with par->index */
 566
 567         request = ALIGN(request, crtc->line_pad);
 568         request = request * var->yres_virtual;
 569         if (crtc->vidmem_size < request) {
 570                 pr_err("not enough video memory for mode\n");
 571                 return -ENOMEM;
 572         }
 573
 574         return hw_sm750_crtc_checkMode(crtc, var);
 575 }
 576
 577 static int lynxfb_ops_setcolreg(unsigned regno,
 578                                 unsigned red,
 579                                 unsigned green,
 580                                 unsigned blue,
 581                                 unsigned transp,
 582                                 struct fb_info *info)
 583 {
 584         struct lynxfb_par *par;
 585         struct lynxfb_crtc *crtc;
 586         struct fb_var_screeninfo *var;
 587         int ret;
 588
 589         par = info->par;
 590         crtc = &par->crtc;
 591         var = &info->var;
 592         ret = 0;
 593
 594         if (regno > 256) {
 595                 pr_err("regno = %d\n", regno);
 596                 return -EINVAL;
 597         }
 598
 599         if (info->var.grayscale)
 600                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
 601
 602         if (var->bits_per_pixel == 8 &&
 603             info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
 604                 red >>= 8;
 605                 green >>= 8;
 606                 blue >>= 8;
 607                 ret = hw_sm750_setColReg(crtc, regno, red, green, blue);
 608                 goto exit;
 609         }
 610
 611         if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 256) {
 612                 u32 val;
 613
 614                 if (var->bits_per_pixel == 16 ||
 615                     var->bits_per_pixel == 32 ||
 616                     var->bits_per_pixel == 24) {
 617                         val = chan_to_field(red, &var->red);
 618                         val |= chan_to_field(green, &var->green);
 619                         val |= chan_to_field(blue, &var->blue);
 620                         par->pseudo_palette[regno] = val;
 621                         goto exit;
 622                 }
 623         }
 624
 625         ret = -EINVAL;
 626
 627 exit:
 628         return ret;
 629 }
 630
 631 static int lynxfb_ops_blank(int blank, struct fb_info *info)
 632 {
 633         struct lynxfb_par *par;
 634         struct lynxfb_output *output;
 635
 636         pr_debug("blank = %d.\n", blank);
 637         par = info->par;
 638         output = &par->output;
 639         return output->proc_setBLANK(output, blank);
 640 }
 641
 642 static int sm750fb_set_drv(struct lynxfb_par *par)
 643 {
 644         int ret;
 645         struct sm750_dev *sm750_dev;
 646         struct lynxfb_output *output;
 647         struct lynxfb_crtc *crtc;
 648
 649         ret = 0;
 650
 651         sm750_dev = par->dev;
 652         output = &par->output;
 653         crtc = &par->crtc;
 654
 655         crtc->vidmem_size = (sm750_dev->dual) ? sm750_dev->vidmem_size >> 1 :
 656                              sm750_dev->vidmem_size;
 657         /* setup crtc and output member */
 658         sm750_dev->hwCursor = g_hwcursor;
 659
 660         crtc->line_pad = 16;
 661         crtc->xpanstep = 8;
 662         crtc->ypanstep = 1;
 663         crtc->ywrapstep = 0;
 664
 665         output->proc_setBLANK = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 666                                  hw_sm750le_setBLANK : hw_sm750_setBLANK;
 667         /* chip specific phase */
 668         sm750_dev->accel.de_wait = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 669                                     hw_sm750le_deWait : hw_sm750_deWait;
 670         switch (sm750_dev->dataflow) {
 671         case sm750_simul_pri:
 672                 output->paths = sm750_pnc;
 673                 crtc->channel = sm750_primary;
 674                 crtc->oScreen = 0;
 675                 crtc->vScreen = sm750_dev->pvMem;
 676                 pr_info("use simul primary mode\n");
 677                 break;
 678         case sm750_simul_sec:
 679                 output->paths = sm750_pnc;
 680                 crtc->channel = sm750_secondary;
 681                 crtc->oScreen = 0;
 682                 crtc->vScreen = sm750_dev->pvMem;
 683                 break;
 684         case sm750_dual_normal:
 685                 if (par->index == 0) {
 686                         output->paths = sm750_panel;
 687                         crtc->channel = sm750_primary;
 688                         crtc->oScreen = 0;
 689                         crtc->vScreen = sm750_dev->pvMem;
 690                 } else {
 691                         output->paths = sm750_crt;
 692                         crtc->channel = sm750_secondary;
 693                         /* not consider of padding stuffs for oScreen,need fix */
 694                         crtc->oScreen = (sm750_dev->vidmem_size >> 1);
 695                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 696                 }
 697                 break;
 698         case sm750_dual_swap:
 699                 if (par->index == 0) {
 700                         output->paths = sm750_panel;
 701                         crtc->channel = sm750_secondary;
 702                         crtc->oScreen = 0;
 703                         crtc->vScreen = sm750_dev->pvMem;
 704                 } else {
 705                         output->paths = sm750_crt;
 706                         crtc->channel = sm750_primary;
 707                         /* not consider of padding stuffs for oScreen,need fix */
 708                         crtc->oScreen = (sm750_dev->vidmem_size >> 1);
 709                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 710                 }
 711                 break;
 712         default:
 713                 ret = -EINVAL;
 714         }
 715
 716         return ret;
 717 }
 718
 719 static struct fb_ops lynxfb_ops = {
 720         .owner = THIS_MODULE,
 721         .fb_check_var =  lynxfb_ops_check_var,
 722         .fb_set_par = lynxfb_ops_set_par,
 723         .fb_setcolreg = lynxfb_ops_setcolreg,
 724         .fb_blank = lynxfb_ops_blank,
 725         .fb_fillrect = cfb_fillrect,
 726         .fb_imageblit = cfb_imageblit,
 727         .fb_copyarea = cfb_copyarea,
 728         /* cursor */
 729         .fb_cursor = lynxfb_ops_cursor,
 730 };
 731
 732 static int lynxfb_set_fbinfo(struct fb_info *info, int index)
 733 {
 734         int i;
 735         struct lynxfb_par *par;
 736         struct sm750_dev *sm750_dev;
 737         struct lynxfb_crtc *crtc;
 738         struct lynxfb_output *output;
 739         struct fb_var_screeninfo *var;
 740         struct fb_fix_screeninfo *fix;
 741
 742         const struct fb_videomode *pdb[] = {
 743                 lynx750_ext, NULL, vesa_modes,
 744         };
 745         int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE};
 746         static const char *mdb_desc[] = {
 747                 "driver prepared modes",
 748                 "kernel prepared default modedb",
 749                 "kernel HELPERS prepared vesa_modes",
 750         };
 751
 752         static const char *fixId[2] = {
 753                 "sm750_fb1", "sm750_fb2",
 754         };
 755
 756         int ret, line_length;
 757
 758         ret = 0;
 759         par = (struct lynxfb_par *)info->par;
 760         sm750_dev = par->dev;
 761         crtc = &par->crtc;
 762         output = &par->output;
 763         var = &info->var;
 764         fix = &info->fix;
 765
 766         /* set index */
 767         par->index = index;
 768         output->channel = &crtc->channel;
 769         sm750fb_set_drv(par);
 770         lynxfb_ops.fb_pan_display = lynxfb_ops_pan_display;
 771
 772         /*
 773          * set current cursor variable and proc pointer,
 774          * must be set after crtc member initialized
 775          */
 776         crtc->cursor.offset = crtc->oScreen + crtc->vidmem_size - 1024;
 777         crtc->cursor.mmio = sm750_dev->pvReg +
 778                 0x800f0 + (int)crtc->channel * 0x140;
 779
 780         pr_info("crtc->cursor.mmio = %p\n", crtc->cursor.mmio);
 781         crtc->cursor.maxH = crtc->cursor.maxW = 64;
 782         crtc->cursor.size = crtc->cursor.maxH * crtc->cursor.maxW * 2 / 8;
 783         crtc->cursor.vstart = sm750_dev->pvMem + crtc->cursor.offset;
 784
 785         memset_io(crtc->cursor.vstart, 0, crtc->cursor.size);
 786         if (!g_hwcursor) {
 787                 lynxfb_ops.fb_cursor = NULL;
 788                 hw_cursor_disable(&crtc->cursor);
 789         }
 790
 791         /* set info->fbops, must be set before fb_find_mode */
 792         if (!sm750_dev->accel_off) {
 793                 /* use 2d acceleration */
 794                 lynxfb_ops.fb_fillrect = lynxfb_ops_fillrect;
 795                 lynxfb_ops.fb_copyarea = lynxfb_ops_copyarea;
 796                 lynxfb_ops.fb_imageblit = lynxfb_ops_imageblit;
 797         }
 798         info->fbops = &lynxfb_ops;
 799
 800         if (!g_fbmode[index]) {
 801                 g_fbmode[index] = g_def_fbmode;
 802                 if (index)
 803                         g_fbmode[index] = g_fbmode[0];
 804         }
 805
 806         for (i = 0; i < 3; i++) {
 807
 808                 ret = fb_find_mode(var, info, g_fbmode[index],
 809                                    pdb[i], cdb[i], NULL, 8);
 810
 811                 if (ret == 1) {
 812                         pr_info("success! use specified mode:%s in %s\n",
 813                                 g_fbmode[index],
 814                                 mdb_desc[i]);
 815                         break;
 816                 } else if (ret == 2) {
 817                         pr_warn("use specified mode:%s in %s,with an ignored refresh rate\n",
 818                                 g_fbmode[index],
 819                                 mdb_desc[i]);
 820                         break;
 821                 } else if (ret == 3) {
 822                         pr_warn("wanna use default mode\n");
 823                         /*break;*/
 824                 } else if (ret == 4) {
 825                         pr_warn("fall back to any valid mode\n");
 826                 } else {
 827                         pr_warn("ret = %d,fb_find_mode failed,with %s\n",
 828                                 ret,
 829                                 mdb_desc[i]);
 830                 }
 831         }
 832
 833         /* some member of info->var had been set by fb_find_mode */
 834
 835         pr_info("Member of info->var is :\n\
 836                 xres=%d\n\
 837                 yres=%d\n\
 838                 xres_virtual=%d\n\
 839                 yres_virtual=%d\n\
 840                 xoffset=%d\n\
 841                 yoffset=%d\n\
 842                 bits_per_pixel=%d\n \
 843                 ...\n",
 844                 var->xres,
 845                 var->yres,
 846                 var->xres_virtual,
 847                 var->yres_virtual,
 848                 var->xoffset,
 849                 var->yoffset,
 850                 var->bits_per_pixel);
 851
 852         /* set par */
 853         par->info = info;
 854
 855         /* set info */
 856         line_length = ALIGN((var->xres_virtual * var->bits_per_pixel / 8),
 857                             crtc->line_pad);
 858
 859         info->pseudo_palette = &par->pseudo_palette[0];
 860         info->screen_base = crtc->vScreen;
 861         pr_debug("screen_base vaddr = %p\n", info->screen_base);
 862         info->screen_size = line_length * var->yres_virtual;
 863         info->flags = FBINFO_FLAG_DEFAULT | 0;
 864
 865         /* set info->fix */
 866         fix->type = FB_TYPE_PACKED_PIXELS;
 867         fix->type_aux = 0;
 868         fix->xpanstep = crtc->xpanstep;
 869         fix->ypanstep = crtc->ypanstep;
 870         fix->ywrapstep = crtc->ywrapstep;
 871         fix->accel = FB_ACCEL_SMI;
 872
 873         strlcpy(fix->id, fixId[index], sizeof(fix->id));
 874
 875         fix->smem_start = crtc->oScreen + sm750_dev->vidmem_start;
 876         pr_info("fix->smem_start = %lx\n", fix->smem_start);
 877         /*
 878          * according to mmap experiment from user space application,
 879          * fix->mmio_len should not larger than virtual size
 880          * (xres_virtual x yres_virtual x ByPP)
 881          * Below line maybe buggy when user mmap fb dev node and write
 882          * data into the bound over virtual size
 883          */
 884         fix->smem_len = crtc->vidmem_size;
 885         pr_info("fix->smem_len = %x\n", fix->smem_len);
 886         info->screen_size = fix->smem_len;
 887         fix->line_length = line_length;
 888         fix->mmio_start = sm750_dev->vidreg_start;
 889         pr_info("fix->mmio_start = %lx\n", fix->mmio_start);
 890         fix->mmio_len = sm750_dev->vidreg_size;
 891         pr_info("fix->mmio_len = %x\n", fix->mmio_len);
 892         switch (var->bits_per_pixel) {
 893         case 8:
 894                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 895                 break;
 896         case 16:
 897         case 32:
 898                 fix->visual = FB_VISUAL_TRUECOLOR;
 899                 break;
 900         }
 901
 902         /* set var */
 903         var->activate = FB_ACTIVATE_NOW;
 904         var->accel_flags = 0;
 905         var->vmode = FB_VMODE_NONINTERLACED;
 906
 907         pr_debug("#1 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
 908                  info->cmap.start, info->cmap.len,
 909                  info->cmap.red, info->cmap.green, info->cmap.blue,
 910                  info->cmap.transp);
 911
 912         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 913         if (ret < 0) {
 914                 pr_err("Could not allocate memory for cmap.\n");
 915                 goto exit;
 916         }
 917
 918         pr_debug("#2 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
 919                  info->cmap.start, info->cmap.len,
 920                  info->cmap.red, info->cmap.green, info->cmap.blue,
 921                  info->cmap.transp);
 922
 923 exit:
 924         lynxfb_ops_check_var(var, info);
 925         return ret;
 926 }
 927
 928 /*      chip specific g_option configuration routine */
 929 static void sm750fb_setup(struct sm750_dev *sm750_dev, char *src)
 930 {
 931         char *opt;
 932         int swap;
 933
 934         swap = 0;
 935
 936         sm750_dev->initParm.chip_clk = 0;
 937         sm750_dev->initParm.mem_clk = 0;
 938         sm750_dev->initParm.master_clk = 0;
 939         sm750_dev->initParm.powerMode = 0;
 940         sm750_dev->initParm.setAllEngOff = 0;
 941         sm750_dev->initParm.resetMemory = 1;
 942
 943         /* defaultly turn g_hwcursor on for both view */
 944         g_hwcursor = 3;
 945
 946         if (!src || !*src) {
 947                 pr_warn("no specific g_option.\n");
 948                 goto NO_PARAM;
 949         }
 950
 951         while ((opt = strsep(&src, ":")) != NULL && *opt != 0) {
 952                 pr_info("opt=%s\n", opt);
 953                 pr_info("src=%s\n", src);
 954
 955                 if (!strncmp(opt, "swap", strlen("swap")))
 956                         swap = 1;
 957                 else if (!strncmp(opt, "nocrt", strlen("nocrt")))
 958                         sm750_dev->nocrt = 1;
 959                 else if (!strncmp(opt, "36bit", strlen("36bit")))
 960                         sm750_dev->pnltype = sm750_doubleTFT;
 961                 else if (!strncmp(opt, "18bit", strlen("18bit")))
 962                         sm750_dev->pnltype = sm750_dualTFT;
 963                 else if (!strncmp(opt, "24bit", strlen("24bit")))
 964                         sm750_dev->pnltype = sm750_24TFT;
 965                 else if (!strncmp(opt, "nohwc0", strlen("nohwc0")))
 966                         g_hwcursor &= ~0x1;
 967                 else if (!strncmp(opt, "nohwc1", strlen("nohwc1")))
 968                         g_hwcursor &= ~0x2;
 969                 else if (!strncmp(opt, "nohwc", strlen("nohwc")))
 970                         g_hwcursor = 0;
 971                 else {
 972                         if (!g_fbmode[0]) {
 973                                 g_fbmode[0] = opt;
 974                                 pr_info("find fbmode0 : %s\n", g_fbmode[0]);
 975                         } else if (!g_fbmode[1]) {
 976                                 g_fbmode[1] = opt;
 977                                 pr_info("find fbmode1 : %s\n", g_fbmode[1]);
 978                         } else {
 979                                 pr_warn("How many view you wann set?\n");
 980                         }
 981                 }
 982         }
 983
 984 NO_PARAM:
 985         if (sm750_dev->revid != SM750LE_REVISION_ID) {
 986                 if (sm750_dev->dual) {
 987                         if (swap)
 988                                 sm750_dev->dataflow = sm750_dual_swap;
 989                         else
 990                                 sm750_dev->dataflow = sm750_dual_normal;
 991                 } else {
 992                         if (swap)
 993                                 sm750_dev->dataflow = sm750_simul_sec;
 994                         else
 995                                 sm750_dev->dataflow = sm750_simul_pri;
 996                 }
 997         } else {
 998                 /* SM750LE only have one crt channel */
 999                 sm750_dev->dataflow = sm750_simul_sec;
1000                 /* sm750le do not have complex attributes */
1001                 sm750_dev->nocrt = 0;
1002         }
1003 }
1004
1005 static int lynxfb_pci_probe(struct pci_dev *pdev,
1006                             const struct pci_device_id *ent)
1007 {
1008         struct fb_info *info[] = {NULL, NULL};
1009         struct sm750_dev *sm750_dev = NULL;
1010         int fbidx;
1011
1012         /* enable device */
1013         if (pci_enable_device(pdev)) {
1014                 pr_err("can not enable device.\n");
1015                 goto err_enable;
1016         }
1017
1018         sm750_dev = kzalloc(sizeof(*sm750_dev), GFP_KERNEL);
1019         if (!sm750_dev) {
1020                 pr_err("Could not allocate memory for share.\n");
1021                 goto err_share;
1022         }
1023
1024         sm750_dev->fbinfo[0] = sm750_dev->fbinfo[1] = NULL;
1025         sm750_dev->devid = pdev->device;
1026         sm750_dev->revid = pdev->revision;
1027
1028         pr_info("share->revid = %02x\n", sm750_dev->revid);
1029         sm750_dev->pdev = pdev;
1030         sm750_dev->mtrr_off = g_nomtrr;
1031         sm750_dev->mtrr.vram = 0;
1032         sm750_dev->accel_off = g_noaccel;
1033         sm750_dev->dual = g_dualview;
1034         spin_lock_init(&sm750_dev->slock);
1035
1036         if (!sm750_dev->accel_off) {
1037                 /*
1038                  * hook deInit and 2d routines, notes that below hw_xxx
1039                  * routine can work on most of lynx chips
1040                  * if some chip need specific function,
1041                  * please hook it in smXXX_set_drv routine
1042                  */
1043                 sm750_dev->accel.de_init = hw_de_init;
1044                 sm750_dev->accel.de_fillrect = hw_fillrect;
1045                 sm750_dev->accel.de_copyarea = hw_copyarea;
1046                 sm750_dev->accel.de_imageblit = hw_imageblit;
1047                 pr_info("enable 2d acceleration\n");
1048         } else {
1049                 pr_info("disable 2d acceleration\n");
1050         }
1051
1052         /* call chip specific setup routine  */
1053         sm750fb_setup(sm750_dev, g_settings);
1054
1055         /* call chip specific mmap routine */
1056         if (hw_sm750_map(sm750_dev, pdev)) {
1057                 pr_err("Memory map failed\n");
1058                 goto err_map;
1059         }
1060
1061         if (!sm750_dev->mtrr_off)
1062                 sm750_dev->mtrr.vram = arch_phys_wc_add(sm750_dev->vidmem_start,
1063                                                         sm750_dev->vidmem_size);
1064
1065         memset_io(sm750_dev->pvMem, 0, sm750_dev->vidmem_size);
1066
1067         pr_info("sm%3x mmio address = %p\n", sm750_dev->devid,
1068                 sm750_dev->pvReg);
1069
1070         pci_set_drvdata(pdev, sm750_dev);
1071
1072         /* call chipInit routine */
1073         hw_sm750_inithw(sm750_dev, pdev);
1074
1075         /* allocate frame buffer info structor according to g_dualview */
1076         fbidx = 0;
1077 ALLOC_FB:
1078         info[fbidx] = framebuffer_alloc(sizeof(struct lynxfb_par), &pdev->dev);
1079         if (!info[fbidx]) {
1080                 pr_err("Could not allocate framebuffer #%d.\n", fbidx);
1081                 if (fbidx == 0)
1082                         goto err_info0_alloc;
1083                 else
1084                         goto err_info1_alloc;
1085         } else {
1086                 struct lynxfb_par *par;
1087                 int errno;
1088
1089                 pr_info("framebuffer #%d alloc okay\n", fbidx);
1090                 sm750_dev->fbinfo[fbidx] = info[fbidx];
1091                 par = info[fbidx]->par;
1092                 par->dev = sm750_dev;
1093
1094                 /* set fb_info structure */
1095                 if (lynxfb_set_fbinfo(info[fbidx], fbidx)) {
1096                         pr_err("Failed to initial fb_info #%d.\n", fbidx);
1097                         if (fbidx == 0)
1098                                 goto err_info0_set;
1099                         else
1100                                 goto err_info1_set;
1101                 }
1102
1103                 /* register frame buffer */
1104                 pr_info("Ready to register framebuffer #%d.\n", fbidx);
1105                 errno = register_framebuffer(info[fbidx]);
1106                 if (errno < 0) {
1107                         pr_err("Failed to register fb_info #%d. err %d\n",
1108                                fbidx,
1109                                errno);
1110                         if (fbidx == 0)
1111                                 goto err_register0;
1112                         else
1113                                 goto err_register1;
1114                 }
1115                 pr_info("Accomplished register framebuffer #%d.\n", fbidx);
1116         }
1117
1118         /* no dual view by far */
1119         fbidx++;
1120         if (sm750_dev->dual && fbidx < 2)
1121                 goto ALLOC_FB;
1122
1123         return 0;
1124
1125 err_register1:
1126 err_info1_set:
1127         framebuffer_release(info[1]);
1128 err_info1_alloc:
1129         unregister_framebuffer(info[0]);
1130 err_register0:
1131 err_info0_set:
1132         framebuffer_release(info[0]);
1133 err_info0_alloc:
1134 err_map:
1135         kfree(sm750_dev);
1136 err_share:
1137 err_enable:
1138         return -ENODEV;
1139 }
1140
1141 static void lynxfb_pci_remove(struct pci_dev *pdev)
1142 {
1143         struct fb_info *info;
1144         struct sm750_dev *sm750_dev;
1145         struct lynxfb_par *par;
1146         int cnt;
1147
1148         cnt = 2;
1149         sm750_dev = pci_get_drvdata(pdev);
1150
1151         while (cnt-- > 0) {
1152                 info = sm750_dev->fbinfo[cnt];
1153                 if (!info)
1154                         continue;
1155                 par = info->par;
1156
1157                 unregister_framebuffer(info);
1158                 /* release frame buffer */
1159                 framebuffer_release(info);
1160         }
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         kfree(sm750_dev);
1167         pci_set_drvdata(pdev, NULL);
1168 }
1169
1170 static int __init lynxfb_setup(char *options)
1171 {
1172         int len;
1173         char *opt, *tmp;
1174
1175         if (!options || !*options) {
1176                 pr_warn("no options.\n");
1177                 return 0;
1178         }
1179
1180         pr_info("options:%s\n", options);
1181
1182         len = strlen(options) + 1;
1183         g_settings = kzalloc(len, GFP_KERNEL);
1184         if (!g_settings)
1185                 return -ENOMEM;
1186
1187         tmp = g_settings;
1188
1189         /*
1190          * Notes:
1191          * char * strsep(char **s,const char * ct);
1192          * @s: the string to be searched
1193          * @ct :the characters to search for
1194          *
1195          * strsep() updates @options to pointer after the first found token
1196          * it also returns the pointer ahead the token.
1197          */
1198         while ((opt = strsep(&options, ":")) != NULL) {
1199                 /* options that mean for any lynx chips are configured here */
1200                 if (!strncmp(opt, "noaccel", strlen("noaccel")))
1201                         g_noaccel = 1;
1202                 else if (!strncmp(opt, "nomtrr", strlen("nomtrr")))
1203                         g_nomtrr = 1;
1204                 else if (!strncmp(opt, "dual", strlen("dual")))
1205                         g_dualview = 1;
1206                 else {
1207                         strcat(tmp, opt);
1208                         tmp += strlen(opt);
1209                         if (options != NULL)
1210                                 *tmp++ = ':';
1211                         else
1212                                 *tmp++ = 0;
1213                 }
1214         }
1215
1216         /* misc g_settings are transport to chip specific routines */
1217         pr_info("parameter left for chip specific analysis:%s\n", g_settings);
1218         return 0;
1219 }
1220
1221 static struct pci_device_id smi_pci_table[] = {
1222         { PCI_DEVICE(0x126f, 0x0750), },
1223         {0,}
1224 };
1225
1226 MODULE_DEVICE_TABLE(pci, smi_pci_table);
1227
1228 static struct pci_driver lynxfb_driver = {
1229         .name =         "sm750fb",
1230         .id_table =     smi_pci_table,
1231         .probe =        lynxfb_pci_probe,
1232         .remove =       lynxfb_pci_remove,
1233 #ifdef CONFIG_PM
1234         .suspend = lynxfb_suspend,
1235         .resume = lynxfb_resume,
1236 #endif
1237 };
1238
1239 static int __init lynxfb_init(void)
1240 {
1241         char *option;
1242         int ret;
1243
1244 #ifdef MODULE
1245         option = g_option;
1246 #else
1247         if (fb_get_options("sm750fb", &option))
1248                 return -ENODEV;
1249 #endif
1250
1251         lynxfb_setup(option);
1252         ret = pci_register_driver(&lynxfb_driver);
1253         return ret;
1254 }
1255 module_init(lynxfb_init);
1256
1257 static void __exit lynxfb_exit(void)
1258 {
1259         pci_unregister_driver(&lynxfb_driver);
1260 }
1261 module_exit(lynxfb_exit);
1262
1263 module_param(g_option, charp, S_IRUGO);
1264
1265 MODULE_PARM_DESC(g_option,
1266                  "\n\t\tCommon options:\n"
1267                  "\t\tnoaccel:disable 2d capabilities\n"
1268                  "\t\tnomtrr:disable MTRR attribute for video memory\n"
1269                  "\t\tdualview:dual frame buffer feature enabled\n"
1270                  "\t\tnohwc:disable hardware cursor\n"
1271                  "\t\tUsual example:\n"
1272                  "\t\tinsmod ./sm750fb.ko g_option=\"noaccel,nohwc,1280x1024-8@60\"\n"
1273                  );
1274
1275 MODULE_AUTHOR("monk liu <monk.liu@siliconmotion.com>");
1276 MODULE_AUTHOR("Sudip Mukherjee <sudip@vectorindia.org>");
1277 MODULE_DESCRIPTION("Frame buffer driver for SM750 chipset");
1278 MODULE_LICENSE("GPL v2");