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 inline void lynxfb_set_visual_mode(struct fb_info *info)
 301 {
 302         switch (info->var.bits_per_pixel) {
 303         case 8:
 304                 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 305                 break;
 306         case 16:
 307         case 24:
 308         case 32:
 309                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 310                 break;
 311         default:
 312                 break;
 313         }
 314 }
 315
 316 static inline int lynxfb_set_color_offsets(struct fb_info *info)
 317 {
 318         lynxfb_set_visual_mode(info);
 319
 320         switch (info->var.bits_per_pixel) {
 321         case 8:
 322                 info->var.red.offset = 0;
 323                 info->var.red.length = 8;
 324                 info->var.green.offset = 0;
 325                 info->var.green.length = 8;
 326                 info->var.blue.offset = 0;
 327                 info->var.blue.length = 8;
 328                 info->var.transp.length = 0;
 329                 info->var.transp.offset = 0;
 330                 break;
 331         case 16:
 332                 info->var.red.offset = 11;
 333                 info->var.red.length = 5;
 334                 info->var.green.offset = 5;
 335                 info->var.green.length = 6;
 336                 info->var.blue.offset = 0;
 337                 info->var.blue.length = 5;
 338                 info->var.transp.length = 0;
 339                 info->var.transp.offset = 0;
 340                 break;
 341         case 24:
 342         case 32:
 343                 info->var.red.offset = 16;
 344                 info->var.red.length = 8;
 345                 info->var.green.offset = 8;
 346                 info->var.green.length = 8;
 347                 info->var.blue.offset = 0;
 348                 info->var.blue.length = 8;
 349                 break;
 350         default:
 351                 return -EINVAL;
 352         }
 353         return 0;
 354 }
 355
 356 static int lynxfb_ops_set_par(struct fb_info *info)
 357 {
 358         struct lynxfb_par *par;
 359         struct lynxfb_crtc *crtc;
 360         struct lynxfb_output *output;
 361         struct fb_var_screeninfo *var;
 362         struct fb_fix_screeninfo *fix;
 363         int ret;
 364         unsigned int line_length;
 365
 366         if (!info)
 367                 return -EINVAL;
 368
 369         ret = 0;
 370         par = info->par;
 371         crtc = &par->crtc;
 372         output = &par->output;
 373         var = &info->var;
 374         fix = &info->fix;
 375
 376         /* fix structure is not so FIX ... */
 377         line_length = var->xres_virtual * var->bits_per_pixel / 8;
 378         line_length = ALIGN(line_length, crtc->line_pad);
 379         fix->line_length = line_length;
 380         pr_info("fix->line_length = %d\n", fix->line_length);
 381
 382         /*
 383          * var->red,green,blue,transp are need to be set by driver
 384          * and these data should be set before setcolreg routine
 385          */
 386
 387         ret = lynxfb_set_color_offsets(info);
 388
 389         var->height = var->width = -1;
 390         var->accel_flags = 0;/*FB_ACCELF_TEXT;*/
 391
 392         if (ret) {
 393                 pr_err("bpp %d not supported\n", var->bits_per_pixel);
 394                 return ret;
 395         }
 396         ret = hw_sm750_crtc_setMode(crtc, var, fix);
 397         if (!ret)
 398                 ret = hw_sm750_output_setMode(output, var, fix);
 399         return ret;
 400 }
 401
 402 static inline unsigned int chan_to_field(unsigned int chan,
 403                                          struct fb_bitfield *bf)
 404 {
 405         chan &= 0xffff;
 406         chan >>= 16 - bf->length;
 407         return chan << bf->offset;
 408 }
 409
 410 static int __maybe_unused lynxfb_suspend(struct device *dev)
 411 {
 412         struct fb_info *info;
 413         struct sm750_dev *sm750_dev;
 414
 415         sm750_dev = dev_get_drvdata(dev);
 416
 417         console_lock();
 418         info = sm750_dev->fbinfo[0];
 419         if (info)
 420                 /* 1 means do suspend */
 421                 fb_set_suspend(info, 1);
 422         info = sm750_dev->fbinfo[1];
 423         if (info)
 424                 /* 1 means do suspend */
 425                 fb_set_suspend(info, 1);
 426
 427         console_unlock();
 428         return 0;
 429 }
 430
 431 static int __maybe_unused lynxfb_resume(struct device *dev)
 432 {
 433         struct pci_dev *pdev = to_pci_dev(dev);
 434         struct fb_info *info;
 435         struct sm750_dev *sm750_dev;
 436
 437         struct lynxfb_par *par;
 438         struct lynxfb_crtc *crtc;
 439         struct lynx_cursor *cursor;
 440
 441         sm750_dev = pci_get_drvdata(pdev);
 442
 443         console_lock();
 444
 445         hw_sm750_inithw(sm750_dev, pdev);
 446
 447         info = sm750_dev->fbinfo[0];
 448
 449         if (info) {
 450                 par = info->par;
 451                 crtc = &par->crtc;
 452                 cursor = &crtc->cursor;
 453                 memset_io(cursor->vstart, 0x0, cursor->size);
 454                 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
 455                 lynxfb_ops_set_par(info);
 456                 fb_set_suspend(info, 0);
 457         }
 458
 459         info = sm750_dev->fbinfo[1];
 460
 461         if (info) {
 462                 par = info->par;
 463                 crtc = &par->crtc;
 464                 cursor = &crtc->cursor;
 465                 memset_io(cursor->vstart, 0x0, cursor->size);
 466                 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
 467                 lynxfb_ops_set_par(info);
 468                 fb_set_suspend(info, 0);
 469         }
 470
 471         pdev->dev.power.power_state.event = PM_EVENT_RESUME;
 472
 473         console_unlock();
 474         return 0;
 475 }
 476
 477 static int lynxfb_ops_check_var(struct fb_var_screeninfo *var,
 478                                 struct fb_info *info)
 479 {
 480         int ret;
 481         struct lynxfb_par *par;
 482         struct lynxfb_crtc *crtc;
 483         resource_size_t request;
 484
 485         ret = 0;
 486         par = info->par;
 487         crtc = &par->crtc;
 488
 489         pr_debug("check var:%dx%d-%d\n",
 490                  var->xres,
 491                  var->yres,
 492                  var->bits_per_pixel);
 493
 494         ret = lynxfb_set_color_offsets(info);
 495
 496         if (ret) {
 497                 pr_err("bpp %d not supported\n", var->bits_per_pixel);
 498                 return ret;
 499         }
 500
 501         var->height = var->width = -1;
 502         var->accel_flags = 0;/* FB_ACCELF_TEXT; */
 503
 504         /* check if current fb's video memory big enough to hold the onscreen*/
 505         request = var->xres_virtual * (var->bits_per_pixel >> 3);
 506         /* defaulty crtc->channel go with par->index */
 507
 508         request = ALIGN(request, crtc->line_pad);
 509         request = request * var->yres_virtual;
 510         if (crtc->vidmem_size < request) {
 511                 pr_err("not enough video memory for mode\n");
 512                 return -ENOMEM;
 513         }
 514
 515         return hw_sm750_crtc_checkMode(crtc, var);
 516 }
 517
 518 static int lynxfb_ops_setcolreg(unsigned int regno,
 519                                 unsigned int red,
 520                                 unsigned int green,
 521                                 unsigned int blue,
 522                                 unsigned int transp,
 523                                 struct fb_info *info)
 524 {
 525         struct lynxfb_par *par;
 526         struct lynxfb_crtc *crtc;
 527         struct fb_var_screeninfo *var;
 528         int ret;
 529
 530         par = info->par;
 531         crtc = &par->crtc;
 532         var = &info->var;
 533         ret = 0;
 534
 535         if (regno > 256) {
 536                 pr_err("regno = %d\n", regno);
 537                 return -EINVAL;
 538         }
 539
 540         if (info->var.grayscale)
 541                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
 542
 543         if (var->bits_per_pixel == 8 &&
 544             info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
 545                 red >>= 8;
 546                 green >>= 8;
 547                 blue >>= 8;
 548                 ret = hw_sm750_setColReg(crtc, regno, red, green, blue);
 549                 goto exit;
 550         }
 551
 552         if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 256) {
 553                 u32 val;
 554
 555                 if (var->bits_per_pixel == 16 ||
 556                     var->bits_per_pixel == 32 ||
 557                     var->bits_per_pixel == 24) {
 558                         val = chan_to_field(red, &var->red);
 559                         val |= chan_to_field(green, &var->green);
 560                         val |= chan_to_field(blue, &var->blue);
 561                         par->pseudo_palette[regno] = val;
 562                         goto exit;
 563                 }
 564         }
 565
 566         ret = -EINVAL;
 567
 568 exit:
 569         return ret;
 570 }
 571
 572 static int lynxfb_ops_blank(int blank, struct fb_info *info)
 573 {
 574         struct lynxfb_par *par;
 575         struct lynxfb_output *output;
 576
 577         pr_debug("blank = %d.\n", blank);
 578         par = info->par;
 579         output = &par->output;
 580         return output->proc_setBLANK(output, blank);
 581 }
 582
 583 static int sm750fb_set_drv(struct lynxfb_par *par)
 584 {
 585         int ret;
 586         struct sm750_dev *sm750_dev;
 587         struct lynxfb_output *output;
 588         struct lynxfb_crtc *crtc;
 589
 590         ret = 0;
 591
 592         sm750_dev = par->dev;
 593         output = &par->output;
 594         crtc = &par->crtc;
 595
 596         crtc->vidmem_size = sm750_dev->vidmem_size;
 597         if (sm750_dev->fb_count > 1)
 598                 crtc->vidmem_size >>= 1;
 599
 600         /* setup crtc and output member */
 601         sm750_dev->hwCursor = g_hwcursor;
 602
 603         crtc->line_pad = 16;
 604         crtc->xpanstep = 8;
 605         crtc->ypanstep = 1;
 606         crtc->ywrapstep = 0;
 607
 608         output->proc_setBLANK = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 609                                  hw_sm750le_setBLANK : hw_sm750_setBLANK;
 610         /* chip specific phase */
 611         sm750_dev->accel.de_wait = (sm750_dev->revid == SM750LE_REVISION_ID) ?
 612                                     hw_sm750le_deWait : hw_sm750_deWait;
 613         switch (sm750_dev->dataflow) {
 614         case sm750_simul_pri:
 615                 output->paths = sm750_pnc;
 616                 crtc->channel = sm750_primary;
 617                 crtc->oScreen = 0;
 618                 crtc->vScreen = sm750_dev->pvMem;
 619                 pr_info("use simul primary mode\n");
 620                 break;
 621         case sm750_simul_sec:
 622                 output->paths = sm750_pnc;
 623                 crtc->channel = sm750_secondary;
 624                 crtc->oScreen = 0;
 625                 crtc->vScreen = sm750_dev->pvMem;
 626                 break;
 627         case sm750_dual_normal:
 628                 if (par->index == 0) {
 629                         output->paths = sm750_panel;
 630                         crtc->channel = sm750_primary;
 631                         crtc->oScreen = 0;
 632                         crtc->vScreen = sm750_dev->pvMem;
 633                 } else {
 634                         output->paths = sm750_crt;
 635                         crtc->channel = sm750_secondary;
 636                         /* not consider of padding stuffs for oScreen,need fix */
 637                         crtc->oScreen = sm750_dev->vidmem_size >> 1;
 638                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 639                 }
 640                 break;
 641         case sm750_dual_swap:
 642                 if (par->index == 0) {
 643                         output->paths = sm750_panel;
 644                         crtc->channel = sm750_secondary;
 645                         crtc->oScreen = 0;
 646                         crtc->vScreen = sm750_dev->pvMem;
 647                 } else {
 648                         output->paths = sm750_crt;
 649                         crtc->channel = sm750_primary;
 650                         /* not consider of padding stuffs for oScreen,
 651                          * need fix
 652                          */
 653                         crtc->oScreen = sm750_dev->vidmem_size >> 1;
 654                         crtc->vScreen = sm750_dev->pvMem + crtc->oScreen;
 655                 }
 656                 break;
 657         default:
 658                 ret = -EINVAL;
 659         }
 660
 661         return ret;
 662 }
 663
 664 static struct fb_ops lynxfb_ops = {
 665         .owner = THIS_MODULE,
 666         .fb_check_var =  lynxfb_ops_check_var,
 667         .fb_set_par = lynxfb_ops_set_par,
 668         .fb_setcolreg = lynxfb_ops_setcolreg,
 669         .fb_blank = lynxfb_ops_blank,
 670         .fb_fillrect = cfb_fillrect,
 671         .fb_imageblit = cfb_imageblit,
 672         .fb_copyarea = cfb_copyarea,
 673         /* cursor */
 674         .fb_cursor = lynxfb_ops_cursor,
 675 };
 676
 677 static int lynxfb_set_fbinfo(struct fb_info *info, int index)
 678 {
 679         int i;
 680         struct lynxfb_par *par;
 681         struct sm750_dev *sm750_dev;
 682         struct lynxfb_crtc *crtc;
 683         struct lynxfb_output *output;
 684         struct fb_var_screeninfo *var;
 685         struct fb_fix_screeninfo *fix;
 686
 687         const struct fb_videomode *pdb[] = {
 688                 lynx750_ext, NULL, vesa_modes,
 689         };
 690         int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE};
 691         static const char * const mdb_desc[] = {
 692                 "driver prepared modes",
 693                 "kernel prepared default modedb",
 694                 "kernel HELPERS prepared vesa_modes",
 695         };
 696
 697         static const char *fixId[2] = {
 698                 "sm750_fb1", "sm750_fb2",
 699         };
 700
 701         int ret, line_length;
 702
 703         ret = 0;
 704         par = (struct lynxfb_par *)info->par;
 705         sm750_dev = par->dev;
 706         crtc = &par->crtc;
 707         output = &par->output;
 708         var = &info->var;
 709         fix = &info->fix;
 710
 711         /* set index */
 712         par->index = index;
 713         output->channel = &crtc->channel;
 714         sm750fb_set_drv(par);
 715         lynxfb_ops.fb_pan_display = lynxfb_ops_pan_display;
 716
 717         /*
 718          * set current cursor variable and proc pointer,
 719          * must be set after crtc member initialized
 720          */
 721         crtc->cursor.offset = crtc->oScreen + crtc->vidmem_size - 1024;
 722         crtc->cursor.mmio = sm750_dev->pvReg +
 723                 0x800f0 + (int)crtc->channel * 0x140;
 724
 725         pr_info("crtc->cursor.mmio = %p\n", crtc->cursor.mmio);
 726         crtc->cursor.maxH = crtc->cursor.maxW = 64;
 727         crtc->cursor.size = crtc->cursor.maxH * crtc->cursor.maxW * 2 / 8;
 728         crtc->cursor.vstart = sm750_dev->pvMem + crtc->cursor.offset;
 729
 730         memset_io(crtc->cursor.vstart, 0, crtc->cursor.size);
 731         if (!g_hwcursor) {
 732                 lynxfb_ops.fb_cursor = NULL;
 733                 sm750_hw_cursor_disable(&crtc->cursor);
 734         }
 735
 736         /* set info->fbops, must be set before fb_find_mode */
 737         if (!sm750_dev->accel_off) {
 738                 /* use 2d acceleration */
 739                 lynxfb_ops.fb_fillrect = lynxfb_ops_fillrect;
 740                 lynxfb_ops.fb_copyarea = lynxfb_ops_copyarea;
 741                 lynxfb_ops.fb_imageblit = lynxfb_ops_imageblit;
 742         }
 743         info->fbops = &lynxfb_ops;
 744
 745         if (!g_fbmode[index]) {
 746                 g_fbmode[index] = g_def_fbmode;
 747                 if (index)
 748                         g_fbmode[index] = g_fbmode[0];
 749         }
 750
 751         for (i = 0; i < 3; i++) {
 752                 ret = fb_find_mode(var, info, g_fbmode[index],
 753                                    pdb[i], cdb[i], NULL, 8);
 754
 755                 if (ret == 1) {
 756                         pr_info("success! use specified mode:%s in %s\n",
 757                                 g_fbmode[index],
 758                                 mdb_desc[i]);
 759                         break;
 760                 } else if (ret == 2) {
 761                         pr_warn("use specified mode:%s in %s,with an ignored refresh rate\n",
 762                                 g_fbmode[index],
 763                                 mdb_desc[i]);
 764                         break;
 765                 } else if (ret == 3) {
 766                         pr_warn("wanna use default mode\n");
 767                         /*break;*/
 768                 } else if (ret == 4) {
 769                         pr_warn("fall back to any valid mode\n");
 770                 } else {
 771                         pr_warn("ret = %d,fb_find_mode failed,with %s\n",
 772                                 ret,
 773                                 mdb_desc[i]);
 774                 }
 775         }
 776
 777         /* some member of info->var had been set by fb_find_mode */
 778
 779         pr_info("Member of info->var is :\n"
 780                 "xres=%d\n"
 781                 "yres=%d\n"
 782                 "xres_virtual=%d\n"
 783                 "yres_virtual=%d\n"
 784                 "xoffset=%d\n"
 785                 "yoffset=%d\n"
 786                 "bits_per_pixel=%d\n"
 787                 " ...\n",
 788                 var->xres,
 789                 var->yres,
 790                 var->xres_virtual,
 791                 var->yres_virtual,
 792                 var->xoffset,
 793                 var->yoffset,
 794                 var->bits_per_pixel);
 795
 796         /* set par */
 797         par->info = info;
 798
 799         /* set info */
 800         line_length = ALIGN((var->xres_virtual * var->bits_per_pixel / 8),
 801                             crtc->line_pad);
 802
 803         info->pseudo_palette = &par->pseudo_palette[0];
 804         info->screen_base = crtc->vScreen;
 805         pr_debug("screen_base vaddr = %p\n", info->screen_base);
 806         info->screen_size = line_length * var->yres_virtual;
 807         info->flags = FBINFO_FLAG_DEFAULT | 0;
 808
 809         /* set info->fix */
 810         fix->type = FB_TYPE_PACKED_PIXELS;
 811         fix->type_aux = 0;
 812         fix->xpanstep = crtc->xpanstep;
 813         fix->ypanstep = crtc->ypanstep;
 814         fix->ywrapstep = crtc->ywrapstep;
 815         fix->accel = FB_ACCEL_SMI;
 816
 817         strscpy(fix->id, fixId[index], sizeof(fix->id));
 818
 819         fix->smem_start = crtc->oScreen + sm750_dev->vidmem_start;
 820         pr_info("fix->smem_start = %lx\n", fix->smem_start);
 821         /*
 822          * according to mmap experiment from user space application,
 823          * fix->mmio_len should not larger than virtual size
 824          * (xres_virtual x yres_virtual x ByPP)
 825          * Below line maybe buggy when user mmap fb dev node and write
 826          * data into the bound over virtual size
 827          */
 828         fix->smem_len = crtc->vidmem_size;
 829         pr_info("fix->smem_len = %x\n", fix->smem_len);
 830         info->screen_size = fix->smem_len;
 831         fix->line_length = line_length;
 832         fix->mmio_start = sm750_dev->vidreg_start;
 833         pr_info("fix->mmio_start = %lx\n", fix->mmio_start);
 834         fix->mmio_len = sm750_dev->vidreg_size;
 835         pr_info("fix->mmio_len = %x\n", fix->mmio_len);
 836
 837         lynxfb_set_visual_mode(info);
 838
 839         /* set var */
 840         var->activate = FB_ACTIVATE_NOW;
 841         var->accel_flags = 0;
 842         var->vmode = FB_VMODE_NONINTERLACED;
 843
 844         pr_debug("#1 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
 845                  info->cmap.start, info->cmap.len,
 846                  info->cmap.red, info->cmap.green, info->cmap.blue,
 847                  info->cmap.transp);
 848
 849         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 850         if (ret < 0) {
 851                 pr_err("Could not allocate memory for cmap.\n");
 852                 goto exit;
 853         }
 854
 855         pr_debug("#2 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
 856                  info->cmap.start, info->cmap.len,
 857                  info->cmap.red, info->cmap.green, info->cmap.blue,
 858                  info->cmap.transp);
 859
 860 exit:
 861         lynxfb_ops_check_var(var, info);
 862         return ret;
 863 }
 864
 865 /*      chip specific g_option configuration routine */
 866 static void sm750fb_setup(struct sm750_dev *sm750_dev, char *src)
 867 {
 868         char *opt;
 869         int swap;
 870
 871         swap = 0;
 872
 873         sm750_dev->initParm.chip_clk = 0;
 874         sm750_dev->initParm.mem_clk = 0;
 875         sm750_dev->initParm.master_clk = 0;
 876         sm750_dev->initParm.powerMode = 0;
 877         sm750_dev->initParm.setAllEngOff = 0;
 878         sm750_dev->initParm.resetMemory = 1;
 879
 880         /* defaultly turn g_hwcursor on for both view */
 881         g_hwcursor = 3;
 882
 883         if (!src || !*src) {
 884                 dev_warn(&sm750_dev->pdev->dev, "no specific g_option.\n");
 885                 goto NO_PARAM;
 886         }
 887
 888         while ((opt = strsep(&src, ":")) != NULL && *opt != 0) {
 889                 dev_info(&sm750_dev->pdev->dev, "opt=%s\n", opt);
 890                 dev_info(&sm750_dev->pdev->dev, "src=%s\n", src);
 891
 892                 if (!strncmp(opt, "swap", strlen("swap"))) {
 893                         swap = 1;
 894                 } else if (!strncmp(opt, "nocrt", strlen("nocrt"))) {
 895                         sm750_dev->nocrt = 1;
 896                 } else if (!strncmp(opt, "36bit", strlen("36bit"))) {
 897                         sm750_dev->pnltype = sm750_doubleTFT;
 898                 } else if (!strncmp(opt, "18bit", strlen("18bit"))) {
 899                         sm750_dev->pnltype = sm750_dualTFT;
 900                 } else if (!strncmp(opt, "24bit", strlen("24bit"))) {
 901                         sm750_dev->pnltype = sm750_24TFT;
 902                 } else if (!strncmp(opt, "nohwc0", strlen("nohwc0"))) {
 903                         g_hwcursor &= ~0x1;
 904                 } else if (!strncmp(opt, "nohwc1", strlen("nohwc1"))) {
 905                         g_hwcursor &= ~0x2;
 906                 } else if (!strncmp(opt, "nohwc", strlen("nohwc"))) {
 907                         g_hwcursor = 0;
 908                 } else {
 909                         if (!g_fbmode[0]) {
 910                                 g_fbmode[0] = opt;
 911                                 dev_info(&sm750_dev->pdev->dev,
 912                                          "find fbmode0 : %s\n", g_fbmode[0]);
 913                         } else if (!g_fbmode[1]) {
 914                                 g_fbmode[1] = opt;
 915                                 dev_info(&sm750_dev->pdev->dev,
 916                                          "find fbmode1 : %s\n", g_fbmode[1]);
 917                         } else {
 918                                 dev_warn(&sm750_dev->pdev->dev, "How many view you wann set?\n");
 919                         }
 920                 }
 921         }
 922
 923 NO_PARAM:
 924         if (sm750_dev->revid != SM750LE_REVISION_ID) {
 925                 if (sm750_dev->fb_count > 1) {
 926                         if (swap)
 927                                 sm750_dev->dataflow = sm750_dual_swap;
 928                         else
 929                                 sm750_dev->dataflow = sm750_dual_normal;
 930                 } else {
 931                         if (swap)
 932                                 sm750_dev->dataflow = sm750_simul_sec;
 933                         else
 934                                 sm750_dev->dataflow = sm750_simul_pri;
 935                 }
 936         } else {
 937                 /* SM750LE only have one crt channel */
 938                 sm750_dev->dataflow = sm750_simul_sec;
 939                 /* sm750le do not have complex attributes */
 940                 sm750_dev->nocrt = 0;
 941         }
 942 }
 943
 944 static void sm750fb_framebuffer_release(struct sm750_dev *sm750_dev)
 945 {
 946         struct fb_info *fb_info;
 947
 948         while (sm750_dev->fb_count) {
 949                 fb_info = sm750_dev->fbinfo[sm750_dev->fb_count - 1];
 950                 unregister_framebuffer(fb_info);
 951                 framebuffer_release(fb_info);
 952                 sm750_dev->fb_count--;
 953         }
 954 }
 955
 956 static int sm750fb_framebuffer_alloc(struct sm750_dev *sm750_dev, int fbidx)
 957 {
 958         struct fb_info *fb_info;
 959         struct lynxfb_par *par;
 960         int err;
 961
 962         fb_info = framebuffer_alloc(sizeof(struct lynxfb_par),
 963                                     &sm750_dev->pdev->dev);
 964         if (!fb_info)
 965                 return -ENOMEM;
 966
 967         sm750_dev->fbinfo[fbidx] = fb_info;
 968         par = fb_info->par;
 969         par->dev = sm750_dev;
 970
 971         err = lynxfb_set_fbinfo(fb_info, fbidx);
 972         if (err)
 973                 goto release_fb;
 974
 975         err = register_framebuffer(fb_info);
 976         if (err < 0)
 977                 goto release_fb;
 978
 979         sm750_dev->fb_count++;
 980
 981         return 0;
 982
 983 release_fb:
 984         framebuffer_release(fb_info);
 985         return err;
 986 }
 987
 988 static int lynxfb_kick_out_firmware_fb(struct pci_dev *pdev)
 989 {
 990         struct apertures_struct *ap;
 991         bool primary = false;
 992
 993         ap = alloc_apertures(1);
 994         if (!ap)
 995                 return -ENOMEM;
 996
 997         ap->ranges[0].base = pci_resource_start(pdev, 0);
 998         ap->ranges[0].size = pci_resource_len(pdev, 0);
 999 #ifdef CONFIG_X86
1000         primary = pdev->resource[PCI_ROM_RESOURCE].flags &
1001                                         IORESOURCE_ROM_SHADOW;
1002 #endif
1003         remove_conflicting_framebuffers(ap, "sm750_fb1", primary);
1004         kfree(ap);
1005         return 0;
1006 }
1007
1008 static int lynxfb_pci_probe(struct pci_dev *pdev,
1009                             const struct pci_device_id *ent)
1010 {
1011         struct sm750_dev *sm750_dev = NULL;
1012         int max_fb;
1013         int fbidx;
1014         int err;
1015
1016         err = lynxfb_kick_out_firmware_fb(pdev);
1017         if (err)
1018                 return err;
1019
1020         /* enable device */
1021         err = pcim_enable_device(pdev);
1022         if (err)
1023                 return err;
1024
1025         err = -ENOMEM;
1026         sm750_dev = devm_kzalloc(&pdev->dev, sizeof(*sm750_dev), GFP_KERNEL);
1027         if (!sm750_dev)
1028                 return err;
1029
1030         sm750_dev->fbinfo[0] = sm750_dev->fbinfo[1] = NULL;
1031         sm750_dev->devid = pdev->device;
1032         sm750_dev->revid = pdev->revision;
1033         sm750_dev->pdev = pdev;
1034         sm750_dev->mtrr_off = g_nomtrr;
1035         sm750_dev->mtrr.vram = 0;
1036         sm750_dev->accel_off = g_noaccel;
1037         spin_lock_init(&sm750_dev->slock);
1038
1039         if (!sm750_dev->accel_off) {
1040                 /*
1041                  * hook deInit and 2d routines, notes that below hw_xxx
1042                  * routine can work on most of lynx chips
1043                  * if some chip need specific function,
1044                  * please hook it in smXXX_set_drv routine
1045                  */
1046                 sm750_dev->accel.de_init = sm750_hw_de_init;
1047                 sm750_dev->accel.de_fillrect = sm750_hw_fillrect;
1048                 sm750_dev->accel.de_copyarea = sm750_hw_copyarea;
1049                 sm750_dev->accel.de_imageblit = sm750_hw_imageblit;
1050         }
1051
1052         /* call chip specific setup routine  */
1053         sm750fb_setup(sm750_dev, g_settings);
1054
1055         /* call chip specific mmap routine */
1056         err = hw_sm750_map(sm750_dev, pdev);
1057         if (err)
1058                 return err;
1059
1060         if (!sm750_dev->mtrr_off)
1061                 sm750_dev->mtrr.vram = arch_phys_wc_add(sm750_dev->vidmem_start,
1062                                                         sm750_dev->vidmem_size);
1063
1064         memset_io(sm750_dev->pvMem, 0, sm750_dev->vidmem_size);
1065
1066         pci_set_drvdata(pdev, sm750_dev);
1067
1068         /* call chipInit routine */
1069         hw_sm750_inithw(sm750_dev, pdev);
1070
1071         /* allocate frame buffer info structures according to g_dualview */
1072         max_fb = g_dualview ? 2 : 1;
1073         for (fbidx = 0; fbidx < max_fb; fbidx++) {
1074                 err = sm750fb_framebuffer_alloc(sm750_dev, fbidx);
1075                 if (err)
1076                         goto release_fb;
1077         }
1078
1079         return 0;
1080
1081 release_fb:
1082         sm750fb_framebuffer_release(sm750_dev);
1083         return err;
1084 }
1085
1086 static void lynxfb_pci_remove(struct pci_dev *pdev)
1087 {
1088         struct sm750_dev *sm750_dev;
1089
1090         sm750_dev = pci_get_drvdata(pdev);
1091
1092         sm750fb_framebuffer_release(sm750_dev);
1093         arch_phys_wc_del(sm750_dev->mtrr.vram);
1094
1095         iounmap(sm750_dev->pvReg);
1096         iounmap(sm750_dev->pvMem);
1097         kfree(g_settings);
1098 }
1099
1100 static int __init lynxfb_setup(char *options)
1101 {
1102         int len;
1103         char *opt, *tmp;
1104
1105         if (!options || !*options) {
1106                 pr_warn("no options.\n");
1107                 return 0;
1108         }
1109
1110         pr_info("options:%s\n", options);
1111
1112         len = strlen(options) + 1;
1113         g_settings = kzalloc(len, GFP_KERNEL);
1114         if (!g_settings)
1115                 return -ENOMEM;
1116
1117         tmp = g_settings;
1118
1119         /*
1120          * Notes:
1121          * char * strsep(char **s,const char * ct);
1122          * @s: the string to be searched
1123          * @ct :the characters to search for
1124          *
1125          * strsep() updates @options to pointer after the first found token
1126          * it also returns the pointer ahead the token.
1127          */
1128         while ((opt = strsep(&options, ":")) != NULL) {
1129                 /* options that mean for any lynx chips are configured here */
1130                 if (!strncmp(opt, "noaccel", strlen("noaccel"))) {
1131                         g_noaccel = 1;
1132                 } else if (!strncmp(opt, "nomtrr", strlen("nomtrr"))) {
1133                         g_nomtrr = 1;
1134                 } else if (!strncmp(opt, "dual", strlen("dual"))) {
1135                         g_dualview = 1;
1136                 } else {
1137                         strcat(tmp, opt);
1138                         tmp += strlen(opt);
1139                         if (options)
1140                                 *tmp++ = ':';
1141                         else
1142                                 *tmp++ = 0;
1143                 }
1144         }
1145
1146         /* misc g_settings are transport to chip specific routines */
1147         pr_info("parameter left for chip specific analysis:%s\n", g_settings);
1148         return 0;
1149 }
1150
1151 static const struct pci_device_id smi_pci_table[] = {
1152         { PCI_DEVICE(0x126f, 0x0750), },
1153         {0,}
1154 };
1155
1156 MODULE_DEVICE_TABLE(pci, smi_pci_table);
1157
1158 static SIMPLE_DEV_PM_OPS(lynxfb_pm_ops, lynxfb_suspend, lynxfb_resume);
1159
1160 static struct pci_driver lynxfb_driver = {
1161         .name =         "sm750fb",
1162         .id_table =     smi_pci_table,
1163         .probe =        lynxfb_pci_probe,
1164         .remove =       lynxfb_pci_remove,
1165         .driver.pm =    &lynxfb_pm_ops,
1166 };
1167
1168 static int __init lynxfb_init(void)
1169 {
1170         char *option;
1171
1172 #ifdef MODULE
1173         option = g_option;
1174 #else
1175         if (fb_get_options("sm750fb", &option))
1176                 return -ENODEV;
1177 #endif
1178
1179         lynxfb_setup(option);
1180         return pci_register_driver(&lynxfb_driver);
1181 }
1182 module_init(lynxfb_init);
1183
1184 static void __exit lynxfb_exit(void)
1185 {
1186         pci_unregister_driver(&lynxfb_driver);
1187 }
1188 module_exit(lynxfb_exit);
1189
1190 module_param(g_option, charp, 0444);
1191
1192 MODULE_PARM_DESC(g_option,
1193                  "\n\t\tCommon options:\n"
1194                  "\t\tnoaccel:disable 2d capabilities\n"
1195                  "\t\tnomtrr:disable MTRR attribute for video memory\n"
1196                  "\t\tdualview:dual frame buffer feature enabled\n"
1197                  "\t\tnohwc:disable hardware cursor\n"
1198                  "\t\tUsual example:\n"
1199                  "\t\tinsmod ./sm750fb.ko g_option=\"noaccel,nohwc,1280x1024-8@60\"\n"
1200                  );
1201
1202 MODULE_AUTHOR("monk liu <monk.liu@siliconmotion.com>");
1203 MODULE_AUTHOR("Sudip Mukherjee <sudip@vectorindia.org>");
1204 MODULE_DESCRIPTION("Frame buffer driver for SM750 chipset");
1205 MODULE_LICENSE("Dual BSD/GPL");