drivers/staging/sm750fb/sm750.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/kernel.h>
   3 #include <linux/module.h>
   4 #include <linux/errno.h>
   5 #include <linux/string.h>
   6 #include <linux/mm.h>
   7 #include <linux/slab.h>
   8 #include <linux/delay.h>
   9 #include <linux/fb.h>
  10 #include <linux/ioport.h>
  11 #include <linux/init.h>
  12 #include <linux/pci.h>
  13 #include <linux/mm_types.h>
  14 #include <linux/vmalloc.h>
  15 #include <linux/pagemap.h>
  16 #include <linux/screen_info.h>
  17 #include <linux/console.h>
  18 #include <asm/fb.h>
  19 #include "sm750.h"
  20 #include "sm750_accel.h"
  21 #include "sm750_cursor.h"
  22
  23 /*
  24  * #ifdef __BIG_ENDIAN
  25  * ssize_t lynxfb_ops_write(struct fb_info *info, const char __user *buf,
  26  * size_t count, loff_t *ppos);
  27  * ssize_t lynxfb_ops_read(struct fb_info *info, char __user *buf,
  28  * size_t count, loff_t *ppos);
  29  * #endif
  30  */
  31
  32 /* common var for all device */
  33 static int g_hwcursor = 1;
  34 static int g_noaccel;
  35 static int g_nomtrr;
  36 static const char *g_fbmode[] = {NULL, NULL};
  37 static const char *g_def_fbmode = "1024x768-32@60";
  38 static char *g_settings;
  39 static int g_dualview;
  40 static char *g_option;
  41
  42 static const struct fb_videomode lynx750_ext[] = {
  43         /*      1024x600-60 VESA        [1.71:1] */
  44         {NULL,  60, 1024, 600, 20423, 144,  40, 18, 1, 104, 3,
  45          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  46          FB_VMODE_NONINTERLACED},
  47
  48         /*      1024x600-70 VESA */
  49         {NULL,  70, 1024, 600, 17211, 152,  48, 21, 1, 104, 3,
  50          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  51          FB_VMODE_NONINTERLACED},
  52
  53         /*      1024x600-75 VESA */
  54         {NULL,  75, 1024, 600, 15822, 160,  56, 23, 1, 104, 3,
  55          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  56          FB_VMODE_NONINTERLACED},
  57
  58         /*      1024x600-85 VESA */
  59         {NULL,  85, 1024, 600, 13730, 168,  56, 26, 1, 112, 3,
  60          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  61          FB_VMODE_NONINTERLACED},
  62
  63         /*      720x480 */
  64         {NULL, 60,  720,  480,  37427, 88,   16, 13, 1,   72,  3,
  65          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  66          FB_VMODE_NONINTERLACED},
  67
  68         /*      1280x720                [1.78:1]        */
  69         {NULL, 60,  1280,  720,  13426, 162, 86, 22, 1,  136, 3,
  70          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  71          FB_VMODE_NONINTERLACED},
  72
  73         /*      1280x768@60 */
  74         {NULL, 60, 1280, 768, 12579, 192, 64, 20, 3, 128, 7,
  75          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  76          FB_VMODE_NONINTERLACED},
  77
  78         /*      1360 x 768      [1.77083:1]     */
  79         {NULL,  60, 1360, 768, 11804, 208,  64, 23, 1, 144, 3,
  80          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  81          FB_VMODE_NONINTERLACED},
  82
  83         /*      1368 x 768      [1.78:1]        */
  84         {NULL, 60,  1368,  768,  11647, 216, 72, 23, 1,  144, 3,
  85          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  86          FB_VMODE_NONINTERLACED},
  87
  88         /*      1440 x 900              [16:10] */
  89         {NULL, 60, 1440, 900, 9392, 232, 80, 28, 1, 152, 3,
  90          FB_SYNC_VERT_HIGH_ACT,
  91          FB_VMODE_NONINTERLACED},
  92
  93         /*      1440x960                [15:10] */
  94         {NULL, 60, 1440, 960, 8733, 240, 88, 30, 1, 152, 3,
  95          FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  96          FB_VMODE_NONINTERLACED},
  97
  98         /*      1920x1080       [16:9]  */
  99         {NULL, 60, 1920, 1080, 6734, 148, 88, 41, 1, 44, 3,
 100          FB_SYNC_VERT_HIGH_ACT,
 101          FB_VMODE_NONINTERLACED},
 102 };
 103
 104 /* no hardware cursor supported under version 2.6.10, kernel bug */
 105 static int lynxfb_ops_cursor(struct fb_info *info, struct fb_cursor *fbcursor)
 106 {
 107         struct lynxfb_par *par;
 108         struct lynxfb_crtc *crtc;
 109         struct lynx_cursor *cursor;
 110
 111         par = info->par;
 112         crtc = &par->crtc;
 113         cursor = &crtc->cursor;
 114
 115         if (fbcursor->image.width > cursor->maxW ||
 116             fbcursor->image.height > cursor->maxH ||
 117             fbcursor->image.depth > 1) {
 118                 return -ENXIO;
 119         }
 120
 121         sm750_hw_cursor_disable(cursor);
 122         if (fbcursor->set & FB_CUR_SETSIZE)
 123                 sm750_hw_cursor_setSize(cursor,
 124                                         fbcursor->image.width,
 125                                         fbcursor->image.height);
 126
 127         if (fbcursor->set & FB_CUR_SETPOS)
 128                 sm750_hw_cursor_setPos(cursor,
 129                                        fbcursor->image.dx - info->var.xoffset,
 130                                        fbcursor->image.dy - info->var.yoffset);
 131
 132         if (fbcursor->set & FB_CUR_SETCMAP) {
 133                 /* get the 16bit color of kernel means */
 134                 u16 fg, bg;
 135
 136                 fg = ((info->cmap.red[fbcursor->image.fg_color] & 0xf800)) |
 137                      ((info->cmap.green[fbcursor->image.fg_color] & 0xfc00) >> 5) |
 138                      ((info->cmap.blue[fbcursor->image.fg_color] & 0xf800) >> 11);
 139
 140                 bg = ((info->cmap.red[fbcursor->image.bg_color] & 0xf800)) |
 141                      ((info->cmap.green[fbcursor->image.bg_color] & 0xfc00) >> 5) |
 142                      ((info->cmap.blue[fbcursor->image.bg_color] & 0xf800) >> 11);
 143
 144                 sm750_hw_cursor_setColor(cursor, fg, bg);
 145         }
 146
 147         if (fbcursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
 148                 sm750_hw_cursor_setData(cursor,
 149                                         fbcursor->rop,
 150                                         fbcursor->image.data,
 151                                         fbcursor->mask);
 152         }
 153
 154         if (fbcursor->enable)
 155                 sm750_hw_cursor_enable(cursor);
 156
 157         return 0;
 158 }
 159
 160 static void lynxfb_ops_fillrect(struct fb_info *info,
 161                                 const struct fb_fillrect *region)
 162 {
 163         struct lynxfb_par *par;
 164         struct sm750_dev *sm750_dev;
 165         unsigned int base, pitch, Bpp, rop;
 166         u32 color;
 167
 168         if (info->state != FBINFO_STATE_RUNNING)
 169                 return;
 170
 171         par = info->par;
 172         sm750_dev = par->dev;
 173
 174         /*
 175          * each time 2d function begin to work,below three variable always need
 176          * be set, seems we can put them together in some place
 177          */
 178         base = par->crtc.oScreen;
 179         pitch = info->fix.line_length;
 180         Bpp = info->var.bits_per_pixel >> 3;
 181
 182         color = (Bpp == 1) ? region->color :
 183                 ((u32 *)info->pseudo_palette)[region->color];
 184         rop = (region->rop != ROP_COPY) ? HW_ROP2_XOR : HW_ROP2_COPY;
 185
 186         /*
 187          * If not use spin_lock, system will die if user load driver
 188          * and immediately unload driver frequently (dual)
 189          * since they fb_count could change during the lifetime of
 190          * this lock, we are holding it for all cases.
 191          */
 192         spin_lock(&sm750_dev->slock);
 193
 194         sm750_dev->accel.de_fillrect(&sm750_dev->accel,
 195                                      base, pitch, Bpp,
 196                                      region->dx, region->dy,
 197                                      region->width, region->height,
 198                                      color, rop);
 199         spin_unlock(&sm750_dev->slock);
 200 }
 201
 202 static void lynxfb_ops_copyarea(struct fb_info *info,
 203                                 const struct fb_copyarea *region)
 204 {
 205         struct lynxfb_par *par;
 206         struct sm750_dev *sm750_dev;
 207         unsigned int base, pitch, Bpp;
 208
 209         par = info->par;
 210         sm750_dev = par->dev;
 211
 212         /*
 213          * each time 2d function begin to work,below three variable always need
 214          * be set, seems we can put them together in some place
 215          */
 216         base = par->crtc.oScreen;
 217         pitch = info->fix.line_length;
 218         Bpp = info->var.bits_per_pixel >> 3;
 219
 220         /*
 221          * If not use spin_lock, system will die if user load driver
 222          * and immediately unload driver frequently (dual)
 223          * since they fb_count could change during the lifetime of
 224          * this lock, we are holding it for all cases.
 225          */
 226         spin_lock(&sm750_dev->slock);
 227
 228         sm750_dev->accel.de_copyarea(&sm750_dev->accel,
 229                                      base, pitch, region->sx, region->sy,
 230                                      base, pitch, Bpp, region->dx, region->dy,
 231                                      region->width, region->height,
 232                                      HW_ROP2_COPY);
 233         spin_unlock(&sm750_dev->slock);
 234 }
 235
 236 static void lynxfb_ops_imageblit(struct fb_info *info,
 237                                  const struct fb_image *image)
 238 {
 239         unsigned int base, pitch, Bpp;
 240         unsigned int fgcol, bgcol;
 241         struct lynxfb_par *par;
 242         struct sm750_dev *sm750_dev;
 243
 244         par = info->par;
 245         sm750_dev = par->dev;
 246         /*
 247          * each time 2d function begin to work,below three variable always need
 248          * be set, seems we can put them together in some place
 249          */
 250         base = par->crtc.oScreen;
 251         pitch = info->fix.line_length;
 252         Bpp = info->var.bits_per_pixel >> 3;
 253
 254         /* TODO: Implement hardware acceleration for image->depth > 1 */
 255         if (image->depth != 1) {
 256                 cfb_imageblit(info, image);
 257                 return;
 258         }
 259
 260         if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
 261             info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
 262                 fgcol = ((u32 *)info->pseudo_palette)[image->fg_color];
 263                 bgcol = ((u32 *)info->pseudo_palette)[image->bg_color];
 264         } else {
 265                 fgcol = image->fg_color;
 266                 bgcol = image->bg_color;
 267         }
 268
 269         /*
 270          * If not use spin_lock, system will die if user load driver
 271          * and immediately unload driver frequently (dual)
 272          * since they fb_count could change during the lifetime of
 273          * this lock, we are holding it for all cases.
 274          */
 275         spin_lock(&sm750_dev->slock);
 276
 277         sm750_dev->accel.de_imageblit(&sm750_dev->accel,
 278                                       image->data, image->width >> 3, 0,
 279                                       base, pitch, Bpp,
 280                                       image->dx, image->dy,
 281                                       image->width, image->height,
 282                                       fgcol, bgcol, HW_ROP2_COPY);
 283         spin_unlock(&sm750_dev->slock);
 284 }
 285
 286 static int lynxfb_ops_pan_display(struct fb_var_screeninfo *var,
 287                                   struct fb_info *info)
 288 {
 289         struct lynxfb_par *par;
 290         struct lynxfb_crtc *crtc;
 291
 292         if (!info)
 293                 return -EINVAL;
 294
 295         par = info->par;
 296         crtc = &par->crtc;
 297         return hw_sm750_pan_display(crtc, var, info);
 298 }
 299
 300 static int lynxfb_ops_set_par(struct fb_info *info)
 301 {
 302         struct lynxfb_par *par;
 303         struct lynxfb_crtc *crtc;
 304         struct lynxfb_output *output;
 305         struct fb_var_screeninfo *var;
 306         struct fb_fix_screeninfo *fix;
 307         int ret;
 308         unsigned int line_length;
 309
 310         if (!info)
 311                 return -EINVAL;
 312
 313         ret = 0;
 314         par = info->par;
 315         crtc = &par->crtc;
 316         output = &par->output;
 317         var = &info->var;
 318         fix = &info->fix;
 319
 320         /* fix structure is not so FIX ... */
 321         line_length = var->xres_virtual * var->bits_per_pixel / 8;
 322         line_length = ALIGN(line_length, crtc->line_pad);
 323         fix->line_length = line_length;
 324         pr_info("fix->line_length = %d\n", fix->line_length);
 325
 326         /*
 327          * var->red,green,blue,transp are need to be set by driver
 328          * and these data should be set before setcolreg routine
 329          */
 330
 331         switch (var->bits_per_pixel) {
 332         case 8:
 333                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 334                 var->red.offset = 0;
 335                 var->red.length = 8;
 336                 var->green.offset = 0;
 337                 var->green.length = 8;
 338                 var->blue.offset = 0;
 339                 var->blue.length = 8;
 340                 var->transp.length = 0;
 341                 var->transp.offset = 0;
 342                 break;
 343         case 16:
 344                 var->red.offset = 11;
 345                 var->red.length = 5;
 346                 var->green.offset = 5;
 347                 var->green.length = 6;
 348                 var->blue.offset = 0;
 349                 var->blue.length = 5;
 350                 var->transp.length = 0;
 351                 var->transp.offset = 0;
 352                 fix->visual = FB_VISUAL_TRUECOLOR;
 353                 break;
 354         case 24:
 355         case 32:
 356                 var->red.offset = 16;
 357                 var->red.length = 8;
 358                 var->green.offset = 8;
 359                 var->green.length = 8;
 360                 var->blue.offset = 0;
 361                 var->blue.length = 8;
 362                 fix->visual = FB_VISUAL_TRUECOLOR;
 363                 break;
 364         default:
 365                 ret = -EINVAL;
 366                 break;
 367         }
 368         var->height = var->width = -1;
 369         var->accel_flags = 0;/*FB_ACCELF_TEXT;*/
 370
 371         if (ret) {
 372                 pr_err("pixel bpp format not satisfied\n.");
 373                 return ret;
 374         }
 375         ret = hw_sm750_crtc_setMode(crtc, var, fix);
 376         if (!ret)
 377                 ret = hw_sm750_output_setMode(output, var, fix);
 378         return ret;
 379 }
 380
 381 static inline unsigned int chan_to_field(unsigned int chan,
 382                                          struct fb_bitfield *bf)
 383 {
 384         chan &= 0xffff;
 385         chan >>= 16 - bf->length;
 386         return chan << bf->offset;
 387 }
 388
 389 #ifdef CONFIG_PM
 390 static int lynxfb_suspend(struct pci_dev *pdev, pm_message_t mesg)
 391 {
 392         struct fb_info *info;
 393         struct sm750_dev *sm750_dev;
 394         int ret;
 395
 396         if (mesg.event == pdev->dev.power.power_state.event)
 397                 return 0;
 398
 399         ret = 0;
 400         sm750_dev = pci_get_drvdata(pdev);
 401         switch (mesg.event) {
 402         case PM_EVENT_FREEZE:
 403         case PM_EVENT_PRETHAW:
 404                 pdev->dev.power.power_state = mesg;
 405                 return 0;
 406         }
 407
 408         console_lock();
 409         if (mesg.event & PM_EVENT_SLEEP) {
 410                 info = sm750_dev->fbinfo[0];
 411                 if (info)
 412                         /* 1 means do suspend */
 413                         fb_set_suspend(info, 1);
 414                 info = sm750_dev->fbinfo[1];
 415                 if (info)
 416                         /* 1 means do suspend */
 417                         fb_set_suspend(info, 1);
 418
 419                 ret = pci_save_state(pdev);
 420                 if (ret) {
 421                         dev_err(&pdev->dev,
 422                                 "error:%d occurred in pci_save_state\n", ret);
 423                         goto lynxfb_suspend_err;
 424                 }
 425
 426                 ret = pci_set_power_state(pdev, pci_choose_state(pdev, mesg));
 427                 if (ret) {
 428                         dev_err(&pdev->dev,
 429                                 "error:%d occurred in pci_set_power_state\n",
 430                                 ret);
 431                         goto lynxfb_suspend_err;
 432                 }
 433         }
 434
 435         pdev->dev.power.power_state = mesg;
 436
 437 lynxfb_suspend_err:
 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                 dev_err(&pdev->dev,
 461                         "error:%d occurred in pci_set_power_state\n", ret);
 462                 goto lynxfb_resume_err;
 463         }
 464
 465         if (pdev->dev.power.power_state.event != PM_EVENT_FREEZE) {
 466                 pci_restore_state(pdev);
 467                 ret = pci_enable_device(pdev);
 468                 if (ret) {
 469                         dev_err(&pdev->dev,
 470                                 "error:%d occurred in pci_enable_device\n",
 471                                 ret);
 472                         goto lynxfb_resume_err;
 473                 }
 474                 pci_set_master(pdev);
 475         }
 476
 477         hw_sm750_inithw(sm750_dev, pdev);
 478
 479         info = sm750_dev->fbinfo[0];
 480
 481         if (info) {
 482                 par = info->par;
 483                 crtc = &par->crtc;
 484                 cursor = &crtc->cursor;
 485                 memset_io(cursor->vstart, 0x0, cursor->size);
 486                 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
 487                 lynxfb_ops_set_par(info);
 488                 fb_set_suspend(info, 0);
 489         }
 490
 491         info = sm750_dev->fbinfo[1];
 492
 493         if (info) {
 494                 par = info->par;
 495                 crtc = &par->crtc;
 496                 cursor = &crtc->cursor;
 497                 memset_io(cursor->vstart, 0x0, cursor->size);
 498                 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
 499                 lynxfb_ops_set_par(info);
 500                 fb_set_suspend(info, 0);
 501         }
 502
 503         pdev->dev.power.power_state.event = PM_EVENT_RESUME;
 504
 505 lynxfb_resume_err:
 506         console_unlock();
 507         return ret;
 508 }
 509 #endif
 510
 511 static int lynxfb_ops_check_var(struct fb_var_screeninfo *var,
 512                                 struct fb_info *info)
 513 {
 514         struct lynxfb_par *par;
 515         struct lynxfb_crtc *crtc;
 516         resource_size_t request;
 517
 518         par = info->par;
 519         crtc = &par->crtc;
 520
 521         pr_debug("check var:%dx%d-%d\n",
 522                  var->xres,
 523                  var->yres,
 524                  var->bits_per_pixel);
 525
 526         switch (var->bits_per_pixel) {
 527         case 8:
 528                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 529                 var->red.offset = 0;
 530                 var->red.length = 8;
 531                 var->green.offset = 0;
 532                 var->green.length = 8;
 533                 var->blue.offset = 0;
 534                 var->blue.length = 8;
 535                 var->transp.length = 0;
 536                 var->transp.offset = 0;
 537                 break;
 538         case 16:
 539                 var->red.offset = 11;
 540                 var->red.length = 5;
 541                 var->green.offset = 5;
 542                 var->green.length = 6;
 543                 var->blue.offset = 0;
 544                 var->blue.length = 5;
 545                 var->transp.length = 0;
 546                 var->transp.offset = 0;
 547                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 548                 break;
 549         case 24:
 550         case 32:
 551                 var->red.offset = 16;
 552                 var->red.length = 8;
 553                 var->green.offset = 8;
 554                 var->green.length = 8;
 555                 var->blue.offset = 0;
 556                 var->blue.length = 8;
 557                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 558                 break;
 559         default:
 560                 pr_err("bpp %d not supported\n", var->bits_per_pixel);
 561                 return -EINVAL;
 562         }
 563         var->height = var->width = -1;
 564         var->accel_flags = 0;/* FB_ACCELF_TEXT; */
 565
 566         /* check if current fb's video memory big enought to hold the onscreen*/
 567         request = var->xres_virtual * (var->bits_per_pixel >> 3);
 568         /* defaulty crtc->channel go with par->index */
 569
 570         request = ALIGN(request, crtc->line_pad);
 571         request = request * var->yres_virtual;
 572         if (crtc->vidmem_size < request) {
 573                 pr_err("not enough video memory for mode\n");
 574                 return -ENOMEM;
 575         }
 576
 577         return hw_sm750_crtc_checkMode(crtc, var);
 578 }
 579
 580 static int lynxfb_ops_setcolreg(unsigned int regno,
 581                                 unsigned int red,
 582                                 unsigned int green,
 583                                 unsigned int blue,
 584                                 unsigned int transp,
 585                                 struct fb_info *info)
 586 {
 587         struct lynxfb_par *par;
 588         struct lynxfb_crtc *crtc;
 589         struct fb_var_screeninfo *var;
 590         int ret;
 591
 592         par = info->par;
 593         crtc = &par->crtc;
 594         var = &info->var;
 595         ret = 0;
 596
 597         if (regno > 256) {
 598                 pr_err("regno = %d\n", regno);
 599                 return -EINVAL;
 600         }
 601
 602         if (info->var.grayscale)
 603                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
 604
 605         if (var->bits_per_pixel == 8 &&
 606             info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
 607                 red >>= 8;
 608                 green >>= 8;
 609                 blue >>= 8;
 610                 ret = hw_sm750_setColReg(crtc, regno, red, green, blue);
 611                 goto exit;
 612         }
 613
 614         if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 256) {
 615                 u32 val;
 616
 617                 if (var->bits_per_pixel == 16 ||
 618                     var->bits_per_pixel == 32 ||
 619                     var->bits_per_pixel == 24) {
 620                         val = chan_to_field(red, &var->red);
 621                         val |= chan_to_field(green, &var->green);
 622                         val |= chan_to_field(blue, &var->blue);
 623                         par->pseudo_palette[regno] = val;
 624                         goto exit;
 625                 }
 626         }
 627
 628         ret = -EINVAL;
 629
 630 exit:
 631         return ret;
 632 }
 633
 634 static int lynxfb_ops_blank(int blank, struct fb_info *info)
 635 {
 636         struct lynxfb_par *par;
 637         struct lynxfb_output *output;
 638
 639         pr_debug("blank = %d.\n", blank);
 640         par = info->par;
 641         output = &par->output;
 642         return output->proc_setBLANK(output, blank);
 643 }
 644
 645 static int sm750fb_set_drv(struct lynxfb_par *par)
 646 {
 647         int ret;
 648         struct sm750_dev *sm750_dev;
 649         struct lynxfb_output *output;
 650         struct lynxfb_crtc *crtc;
 651
 652         ret = 0;
 653
 654         sm750_dev = par->dev;
 655         output = &par->output;
 656         crtc = &par->crtc;
 657
 658         crtc->vidmem_size = sm750_dev->vidmem_size;
 659         if (sm750_dev->fb_count > 1)
 660                 crtc->vidmem_size >>= 1;
 661
 662         /* setup crtc and output member */
 663         sm750_dev->hwCursor = g_hwcursor;
 664
 665         crtc->line_pad = 16;
 666         crtc->xpanstep = 8;
 667         crtc->ypanstep = 1;
 668         crtc->ywrapstep = 0;
 669
 670         output->proc_setBLANK = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 671                                  hw_sm750le_setBLANK : hw_sm750_setBLANK;
 672         /* chip specific phase */
 673         sm750_dev->accel.de_wait = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 674                                     hw_sm750le_deWait : hw_sm750_deWait;
 675         switch (sm750_dev->dataflow) {
 676         case sm750_simul_pri:
 677                 output->paths = sm750_pnc;
 678                 crtc->channel = sm750_primary;
 679                 crtc->oScreen = 0;
 680                 crtc->vScreen = sm750_dev->pvMem;
 681                 pr_info("use simul primary mode\n");
 682                 break;
 683         case sm750_simul_sec:
 684                 output->paths = sm750_pnc;
 685                 crtc->channel = sm750_secondary;
 686                 crtc->oScreen = 0;
 687                 crtc->vScreen = sm750_dev->pvMem;
 688                 break;
 689         case sm750_dual_normal:
 690                 if (par->index == 0) {
 691                         output->paths = sm750_panel;
 692                         crtc->channel = sm750_primary;
 693                         crtc->oScreen = 0;
 694                         crtc->vScreen = sm750_dev->pvMem;
 695                 } else {
 696                         output->paths = sm750_crt;
 697                         crtc->channel = sm750_secondary;
 698                         /* not consider of padding stuffs for oScreen,need fix */
 699                         crtc->oScreen = sm750_dev->vidmem_size >> 1;
 700                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 701                 }
 702                 break;
 703         case sm750_dual_swap:
 704                 if (par->index == 0) {
 705                         output->paths = sm750_panel;
 706                         crtc->channel = sm750_secondary;
 707                         crtc->oScreen = 0;
 708                         crtc->vScreen = sm750_dev->pvMem;
 709                 } else {
 710                         output->paths = sm750_crt;
 711                         crtc->channel = sm750_primary;
 712                         /* not consider of padding stuffs for oScreen,need fix */
 713                         crtc->oScreen = sm750_dev->vidmem_size >> 1;
 714                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 715                 }
 716                 break;
 717         default:
 718                 ret = -EINVAL;
 719         }
 720
 721         return ret;
 722 }
 723
 724 static struct fb_ops lynxfb_ops = {
 725         .owner = THIS_MODULE,
 726         .fb_check_var =  lynxfb_ops_check_var,
 727         .fb_set_par = lynxfb_ops_set_par,
 728         .fb_setcolreg = lynxfb_ops_setcolreg,
 729         .fb_blank = lynxfb_ops_blank,
 730         .fb_fillrect = cfb_fillrect,
 731         .fb_imageblit = cfb_imageblit,
 732         .fb_copyarea = cfb_copyarea,
 733         /* cursor */
 734         .fb_cursor = lynxfb_ops_cursor,
 735 };
 736
 737 static int lynxfb_set_fbinfo(struct fb_info *info, int index)
 738 {
 739         int i;
 740         struct lynxfb_par *par;
 741         struct sm750_dev *sm750_dev;
 742         struct lynxfb_crtc *crtc;
 743         struct lynxfb_output *output;
 744         struct fb_var_screeninfo *var;
 745         struct fb_fix_screeninfo *fix;
 746
 747         const struct fb_videomode *pdb[] = {
 748                 lynx750_ext, NULL, vesa_modes,
 749         };
 750         int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE};
 751         static const char * const mdb_desc[] = {
 752                 "driver prepared modes",
 753                 "kernel prepared default modedb",
 754                 "kernel HELPERS prepared vesa_modes",
 755         };
 756
 757         static const char *fixId[2] = {
 758                 "sm750_fb1", "sm750_fb2",
 759         };
 760
 761         int ret, line_length;
 762
 763         ret = 0;
 764         par = (struct lynxfb_par *)info->par;
 765         sm750_dev = par->dev;
 766         crtc = &par->crtc;
 767         output = &par->output;
 768         var = &info->var;
 769         fix = &info->fix;
 770
 771         /* set index */
 772         par->index = index;
 773         output->channel = &crtc->channel;
 774         sm750fb_set_drv(par);
 775         lynxfb_ops.fb_pan_display = lynxfb_ops_pan_display;
 776
 777         /*
 778          * set current cursor variable and proc pointer,
 779          * must be set after crtc member initialized
 780          */
 781         crtc->cursor.offset = crtc->oScreen + crtc->vidmem_size - 1024;
 782         crtc->cursor.mmio = sm750_dev->pvReg +
 783                 0x800f0 + (int)crtc->channel * 0x140;
 784
 785         pr_info("crtc->cursor.mmio = %p\n", crtc->cursor.mmio);
 786         crtc->cursor.maxH = crtc->cursor.maxW = 64;
 787         crtc->cursor.size = crtc->cursor.maxH * crtc->cursor.maxW * 2 / 8;
 788         crtc->cursor.vstart = sm750_dev->pvMem + crtc->cursor.offset;
 789
 790         memset_io(crtc->cursor.vstart, 0, crtc->cursor.size);
 791         if (!g_hwcursor) {
 792                 lynxfb_ops.fb_cursor = NULL;
 793                 sm750_hw_cursor_disable(&crtc->cursor);
 794         }
 795
 796         /* set info->fbops, must be set before fb_find_mode */
 797         if (!sm750_dev->accel_off) {
 798                 /* use 2d acceleration */
 799                 lynxfb_ops.fb_fillrect = lynxfb_ops_fillrect;
 800                 lynxfb_ops.fb_copyarea = lynxfb_ops_copyarea;
 801                 lynxfb_ops.fb_imageblit = lynxfb_ops_imageblit;
 802         }
 803         info->fbops = &lynxfb_ops;
 804
 805         if (!g_fbmode[index]) {
 806                 g_fbmode[index] = g_def_fbmode;
 807                 if (index)
 808                         g_fbmode[index] = g_fbmode[0];
 809         }
 810
 811         for (i = 0; i < 3; i++) {
 812                 ret = fb_find_mode(var, info, g_fbmode[index],
 813                                    pdb[i], cdb[i], NULL, 8);
 814
 815                 if (ret == 1) {
 816                         pr_info("success! use specified mode:%s in %s\n",
 817                                 g_fbmode[index],
 818                                 mdb_desc[i]);
 819                         break;
 820                 } else if (ret == 2) {
 821                         pr_warn("use specified mode:%s in %s,with an ignored refresh rate\n",
 822                                 g_fbmode[index],
 823                                 mdb_desc[i]);
 824                         break;
 825                 } else if (ret == 3) {
 826                         pr_warn("wanna use default mode\n");
 827                         /*break;*/
 828                 } else if (ret == 4) {
 829                         pr_warn("fall back to any valid mode\n");
 830                 } else {
 831                         pr_warn("ret = %d,fb_find_mode failed,with %s\n",
 832                                 ret,
 833                                 mdb_desc[i]);
 834                 }
 835         }
 836
 837         /* some member of info->var had been set by fb_find_mode */
 838
 839         pr_info("Member of info->var is :\n"
 840                 "xres=%d\n"
 841                 "yres=%d\n"
 842                 "xres_virtual=%d\n"
 843                 "yres_virtual=%d\n"
 844                 "xoffset=%d\n"
 845                 "yoffset=%d\n"
 846                 "bits_per_pixel=%d\n"
 847                 " ...\n",
 848                 var->xres,
 849                 var->yres,
 850                 var->xres_virtual,
 851                 var->yres_virtual,
 852                 var->xoffset,
 853                 var->yoffset,
 854                 var->bits_per_pixel);
 855
 856         /* set par */
 857         par->info = info;
 858
 859         /* set info */
 860         line_length = ALIGN((var->xres_virtual * var->bits_per_pixel / 8),
 861                             crtc->line_pad);
 862
 863         info->pseudo_palette = &par->pseudo_palette[0];
 864         info->screen_base = crtc->vScreen;
 865         pr_debug("screen_base vaddr = %p\n", info->screen_base);
 866         info->screen_size = line_length * var->yres_virtual;
 867         info->flags = FBINFO_FLAG_DEFAULT | 0;
 868
 869         /* set info->fix */
 870         fix->type = FB_TYPE_PACKED_PIXELS;
 871         fix->type_aux = 0;
 872         fix->xpanstep = crtc->xpanstep;
 873         fix->ypanstep = crtc->ypanstep;
 874         fix->ywrapstep = crtc->ywrapstep;
 875         fix->accel = FB_ACCEL_SMI;
 876
 877         strlcpy(fix->id, fixId[index], sizeof(fix->id));
 878
 879         fix->smem_start = crtc->oScreen + sm750_dev->vidmem_start;
 880         pr_info("fix->smem_start = %lx\n", fix->smem_start);
 881         /*
 882          * according to mmap experiment from user space application,
 883          * fix->mmio_len should not larger than virtual size
 884          * (xres_virtual x yres_virtual x ByPP)
 885          * Below line maybe buggy when user mmap fb dev node and write
 886          * data into the bound over virtual size
 887          */
 888         fix->smem_len = crtc->vidmem_size;
 889         pr_info("fix->smem_len = %x\n", fix->smem_len);
 890         info->screen_size = fix->smem_len;
 891         fix->line_length = line_length;
 892         fix->mmio_start = sm750_dev->vidreg_start;
 893         pr_info("fix->mmio_start = %lx\n", fix->mmio_start);
 894         fix->mmio_len = sm750_dev->vidreg_size;
 895         pr_info("fix->mmio_len = %x\n", fix->mmio_len);
 896         switch (var->bits_per_pixel) {
 897         case 8:
 898                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 899                 break;
 900         case 16:
 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_framebuffer_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_framebuffer_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_framebuffer_alloc(sm750_dev, fbidx);
1142                 if (err)
1143                         goto release_fb;
1144         }
1145
1146         return 0;
1147
1148 release_fb:
1149         sm750fb_framebuffer_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_framebuffer_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");