drivers/staging/gma500/psb_fb.c

   1 /**************************************************************************
   2  * Copyright (c) 2007-2011, Intel Corporation.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  **************************************************************************/
  19
  20 #include <linux/module.h>
  21 #include <linux/kernel.h>
  22 #include <linux/errno.h>
  23 #include <linux/string.h>
  24 #include <linux/mm.h>
  25 #include <linux/tty.h>
  26 #include <linux/slab.h>
  27 #include <linux/delay.h>
  28 #include <linux/fb.h>
  29 #include <linux/init.h>
  30 #include <linux/console.h>
  31
  32 #include <drm/drmP.h>
  33 #include <drm/drm.h>
  34 #include <drm/drm_crtc.h>
  35
  36 #include "psb_drv.h"
  37 #include "psb_intel_reg.h"
  38 #include "psb_intel_drv.h"
  39 #include "psb_fb.h"
  40
  41 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
  42 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
  43                                               struct drm_file *file_priv,
  44                                               unsigned int *handle);
  45
  46 static const struct drm_framebuffer_funcs psb_fb_funcs = {
  47         .destroy = psb_user_framebuffer_destroy,
  48         .create_handle = psb_user_framebuffer_create_handle,
  49 };
  50
  51 #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
  52
  53 void *psbfb_vdc_reg(struct drm_device *dev)
  54 {
  55         struct drm_psb_private *dev_priv;
  56         dev_priv = (struct drm_psb_private *) dev->dev_private;
  57         return dev_priv->vdc_reg;
  58 }
  59
  60 static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
  61                            unsigned blue, unsigned transp,
  62                            struct fb_info *info)
  63 {
  64         struct psb_fbdev *fbdev = info->par;
  65         struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
  66         uint32_t v;
  67
  68         if (!fb)
  69                 return -ENOMEM;
  70
  71         if (regno > 255)
  72                 return 1;
  73
  74         red = CMAP_TOHW(red, info->var.red.length);
  75         blue = CMAP_TOHW(blue, info->var.blue.length);
  76         green = CMAP_TOHW(green, info->var.green.length);
  77         transp = CMAP_TOHW(transp, info->var.transp.length);
  78
  79         v = (red << info->var.red.offset) |
  80             (green << info->var.green.offset) |
  81             (blue << info->var.blue.offset) |
  82             (transp << info->var.transp.offset);
  83
  84         if (regno < 16) {
  85                 switch (fb->bits_per_pixel) {
  86                 case 16:
  87                         ((uint32_t *) info->pseudo_palette)[regno] = v;
  88                         break;
  89                 case 24:
  90                 case 32:
  91                         ((uint32_t *) info->pseudo_palette)[regno] = v;
  92                         break;
  93                 }
  94         }
  95
  96         return 0;
  97 }
  98
  99 static int psbfb_kms_off(struct drm_device *dev, int suspend)
 100 {
 101         struct drm_framebuffer *fb = 0;
 102         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 103
 104         mutex_lock(&dev->mode_config.mutex);
 105         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 106                 struct fb_info *info = psbfb->fbdev;
 107
 108                 if (suspend) {
 109                         fb_set_suspend(info, 1);
 110                         drm_fb_helper_blank(FB_BLANK_POWERDOWN, info);
 111                 }
 112         }
 113         mutex_unlock(&dev->mode_config.mutex);
 114         return 0;
 115 }
 116
 117 int psbfb_kms_off_ioctl(struct drm_device *dev, void *data,
 118                         struct drm_file *file_priv)
 119 {
 120         int ret;
 121
 122         if (drm_psb_no_fb)
 123                 return 0;
 124         console_lock();
 125         ret = psbfb_kms_off(dev, 0);
 126         console_unlock();
 127
 128         return ret;
 129 }
 130
 131 static int psbfb_kms_on(struct drm_device *dev, int resume)
 132 {
 133         struct drm_framebuffer *fb = 0;
 134         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 135
 136         mutex_lock(&dev->mode_config.mutex);
 137         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 138                 struct fb_info *info = psbfb->fbdev;
 139
 140                 if (resume) {
 141                         fb_set_suspend(info, 0);
 142                         drm_fb_helper_blank(FB_BLANK_UNBLANK, info);
 143                 }
 144         }
 145         mutex_unlock(&dev->mode_config.mutex);
 146
 147         return 0;
 148 }
 149
 150 int psbfb_kms_on_ioctl(struct drm_device *dev, void *data,
 151                        struct drm_file *file_priv)
 152 {
 153         int ret;
 154
 155         if (drm_psb_no_fb)
 156                 return 0;
 157         console_lock();
 158         ret = psbfb_kms_on(dev, 0);
 159         console_unlock();
 160         drm_helper_disable_unused_functions(dev);
 161         return ret;
 162 }
 163
 164 void psbfb_suspend(struct drm_device *dev)
 165 {
 166         console_lock();
 167         psbfb_kms_off(dev, 1);
 168         console_unlock();
 169 }
 170
 171 void psbfb_resume(struct drm_device *dev)
 172 {
 173         console_lock();
 174         psbfb_kms_on(dev, 1);
 175         console_unlock();
 176         drm_helper_disable_unused_functions(dev);
 177 }
 178
 179 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 180 {
 181         int page_num = 0;
 182         int i;
 183         unsigned long address = 0;
 184         int ret;
 185         unsigned long pfn;
 186         struct psb_framebuffer *psbfb = vma->vm_private_data;
 187         struct drm_device *dev = psbfb->base.dev;
 188         struct drm_psb_private *dev_priv = dev->dev_private;
 189
 190         /* FIXME: assumes fb at stolen base which may not be true */
 191         unsigned long phys_addr = (unsigned long)dev_priv->stolen_base;
 192
 193         page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
 194
 195         address = (unsigned long)vmf->virtual_address;
 196
 197         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 198
 199         for (i = 0; i < page_num; i++) {
 200                 pfn = (phys_addr >> PAGE_SHIFT); /* phys_to_pfn(phys_addr); */
 201
 202                 ret = vm_insert_mixed(vma, address, pfn);
 203                 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
 204                         break;
 205                 else if (unlikely(ret != 0)) {
 206                         ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
 207                         return ret;
 208                 }
 209
 210                 address += PAGE_SIZE;
 211                 phys_addr += PAGE_SIZE;
 212         }
 213
 214         return VM_FAULT_NOPAGE;
 215 }
 216
 217 static void psbfb_vm_open(struct vm_area_struct *vma)
 218 {
 219 }
 220
 221 static void psbfb_vm_close(struct vm_area_struct *vma)
 222 {
 223 }
 224
 225 static struct vm_operations_struct psbfb_vm_ops = {
 226         .fault  = psbfb_vm_fault,
 227         .open   = psbfb_vm_open,
 228         .close  = psbfb_vm_close
 229 };
 230
 231 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 232 {
 233         struct psb_fbdev *fbdev = info->par;
 234         struct psb_framebuffer *psbfb = &fbdev->pfb;
 235         char *fb_screen_base = NULL;
 236
 237         if (vma->vm_pgoff != 0)
 238                 return -EINVAL;
 239         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
 240                 return -EINVAL;
 241
 242         if (!psbfb->addr_space)
 243                 psbfb->addr_space = vma->vm_file->f_mapping;
 244
 245         fb_screen_base = (char *)info->screen_base;
 246
 247         /*
 248          * If this is a GEM object then info->screen_base is the virtual
 249          * kernel remapping of the object. FIXME: Review if this is
 250          * suitable for our mmap work
 251          */
 252         vma->vm_ops = &psbfb_vm_ops;
 253         vma->vm_private_data = (void *)psbfb;
 254         vma->vm_flags |= VM_RESERVED | VM_IO |
 255                                         VM_MIXEDMAP | VM_DONTEXPAND;
 256         return 0;
 257 }
 258
 259 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
 260                                                 unsigned long arg)
 261 {
 262         struct psb_fbdev *fbdev = info->par;
 263         struct psb_framebuffer *psbfb = &fbdev->pfb;
 264         struct drm_device *dev = psbfb->base.dev;
 265         struct drm_psb_private *dev_priv = dev->dev_private;
 266         u32 __user *p = (u32 __user *)arg;
 267         u32 l;
 268         u32 buf[32];
 269         switch (cmd) {
 270         case 0x12345678:
 271                 if (!capable(CAP_SYS_RAWIO))
 272                         return -EPERM;
 273                 if (get_user(l, p))
 274                         return -EFAULT;
 275                 if (l > 32)
 276                         return -EMSGSIZE;
 277                 if (copy_from_user(buf, p + 1, l * sizeof(u32)))
 278                         return -EFAULT;
 279                 psbfb_2d_submit(dev_priv, buf, l);
 280                 return 0;
 281         default:
 282                 return -ENOTTY;
 283         }
 284 }
 285
 286 static struct fb_ops psbfb_ops = {
 287         .owner = THIS_MODULE,
 288         .fb_check_var = drm_fb_helper_check_var,
 289         .fb_set_par = drm_fb_helper_set_par,
 290         .fb_blank = drm_fb_helper_blank,
 291         .fb_setcolreg = psbfb_setcolreg,
 292         .fb_fillrect = psbfb_fillrect,
 293         .fb_copyarea = psbfb_copyarea,
 294         .fb_imageblit = psbfb_imageblit,
 295         .fb_mmap = psbfb_mmap,
 296         .fb_sync = psbfb_sync,
 297         .fb_ioctl = psbfb_ioctl,
 298 };
 299
 300 /**
 301  *      psb_framebuffer_init    -       initialize a framebuffer
 302  *      @dev: our DRM device
 303  *      @fb: framebuffer to set up
 304  *      @mode_cmd: mode description
 305  *      @gt: backing object
 306  *
 307  *      Configure and fill in the boilerplate for our frame buffer. Return
 308  *      0 on success or an error code if we fail.
 309  */
 310 static int psb_framebuffer_init(struct drm_device *dev,
 311                                         struct psb_framebuffer *fb,
 312                                         struct drm_mode_fb_cmd *mode_cmd,
 313                                         struct gtt_range *gt)
 314 {
 315         int ret;
 316
 317         if (mode_cmd->pitch & 63)
 318                 return -EINVAL;
 319         switch (mode_cmd->bpp) {
 320         case 8:
 321         case 16:
 322         case 24:
 323         case 32:
 324                 break;
 325         default:
 326                 return -EINVAL;
 327         }
 328         ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
 329         if (ret) {
 330                 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
 331                 return ret;
 332         }
 333         drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
 334         fb->gtt = gt;
 335         return 0;
 336 }
 337
 338 /**
 339  *      psb_framebuffer_create  -       create a framebuffer backed by gt
 340  *      @dev: our DRM device
 341  *      @mode_cmd: the description of the requested mode
 342  *      @gt: the backing object
 343  *
 344  *      Create a framebuffer object backed by the gt, and fill in the
 345  *      boilerplate required
 346  *
 347  *      TODO: review object references
 348  */
 349 static struct drm_framebuffer *psb_framebuffer_create
 350                         (struct drm_device *dev,
 351                          struct drm_mode_fb_cmd *mode_cmd,
 352                          struct gtt_range *gt)
 353 {
 354         struct psb_framebuffer *fb;
 355         int ret;
 356
 357         fb = kzalloc(sizeof(*fb), GFP_KERNEL);
 358         if (!fb)
 359                 return ERR_PTR(-ENOMEM);
 360
 361         ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
 362         if (ret) {
 363                 kfree(fb);
 364                 return ERR_PTR(ret);
 365         }
 366         return &fb->base;
 367 }
 368
 369 /**
 370  *      psbfb_alloc             -       allocate frame buffer memory
 371  *      @dev: the DRM device
 372  *      @aligned_size: space needed
 373  *
 374  *      Allocate the frame buffer. In the usual case we get a GTT range that
 375  *      is stolen memory backed and life is simple. If there isn't sufficient
 376  *      stolen memory or the system has no stolen memory we allocate a range
 377  *      and back it with a GEM object.
 378  *
 379  *      In this case the GEM object has no handle.
 380  *
 381  *      FIXME: console speed up - allocate twice the space if room and use
 382  *      hardware scrolling for acceleration.
 383  */
 384 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
 385 {
 386         struct gtt_range *backing;
 387         /* Begin by trying to use stolen memory backing */
 388         backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
 389         if (backing) {
 390                 if (drm_gem_private_object_init(dev,
 391                                         &backing->gem, aligned_size) == 0)
 392                         return backing;
 393                 psb_gtt_free_range(dev, backing);
 394         }
 395         /* Next try using GEM host memory */
 396         backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0);
 397         if (backing == NULL)
 398                 return NULL;
 399
 400         /* Now back it with an object */
 401         if (drm_gem_object_init(dev, &backing->gem, aligned_size) != 0) {
 402                 psb_gtt_free_range(dev, backing);
 403                 return NULL;
 404         }
 405         return backing;
 406 }
 407
 408 /**
 409  *      psbfb_create            -       create a framebuffer
 410  *      @fbdev: the framebuffer device
 411  *      @sizes: specification of the layout
 412  *
 413  *      Create a framebuffer to the specifications provided
 414  */
 415 static int psbfb_create(struct psb_fbdev *fbdev,
 416                                 struct drm_fb_helper_surface_size *sizes)
 417 {
 418         struct drm_device *dev = fbdev->psb_fb_helper.dev;
 419         struct drm_psb_private *dev_priv = dev->dev_private;
 420         struct fb_info *info;
 421         struct drm_framebuffer *fb;
 422         struct psb_framebuffer *psbfb = &fbdev->pfb;
 423         struct drm_mode_fb_cmd mode_cmd;
 424         struct device *device = &dev->pdev->dev;
 425         int size;
 426         int ret;
 427         struct gtt_range *backing;
 428
 429         mode_cmd.width = sizes->surface_width;
 430         mode_cmd.height = sizes->surface_height;
 431         mode_cmd.bpp = sizes->surface_bpp;
 432
 433         /* No 24bit packed */
 434         if (mode_cmd.bpp == 24)
 435                 mode_cmd.bpp = 32;
 436
 437         /* HW requires pitch to be 64 byte aligned */
 438         mode_cmd.pitch =  ALIGN(mode_cmd.width * ((mode_cmd.bpp + 7) / 8), 64);
 439         mode_cmd.depth = sizes->surface_depth;
 440
 441         size = mode_cmd.pitch * mode_cmd.height;
 442         size = ALIGN(size, PAGE_SIZE);
 443
 444         /* Allocate the framebuffer in the GTT with stolen page backing */
 445         backing = psbfb_alloc(dev, size);
 446         if (backing == NULL)
 447                 return -ENOMEM;
 448
 449         mutex_lock(&dev->struct_mutex);
 450
 451         info = framebuffer_alloc(0, device);
 452         if (!info) {
 453                 ret = -ENOMEM;
 454                 goto out_err1;
 455         }
 456         info->par = fbdev;
 457
 458         ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
 459         if (ret)
 460                 goto out_unref;
 461
 462         fb = &psbfb->base;
 463         psbfb->fbdev = info;
 464
 465         fbdev->psb_fb_helper.fb = fb;
 466         fbdev->psb_fb_helper.fbdev = info;
 467
 468         strcpy(info->fix.id, "psbfb");
 469
 470         info->flags = FBINFO_DEFAULT;
 471         info->fbops = &psbfb_ops;
 472
 473         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 474         if (ret) {
 475                 ret = -ENOMEM;
 476                 goto out_unref;
 477         }
 478
 479         info->fix.smem_start = dev->mode_config.fb_base;
 480         info->fix.smem_len = size;
 481
 482         if (backing->stolen) {
 483                 /* Accessed stolen memory directly */
 484                 info->screen_base = (char *)dev_priv->vram_addr +
 485                                                         backing->offset;
 486         } else {
 487                 /* Pin the pages into the GTT and create a mapping to them */
 488                 psb_gtt_pin(backing);
 489                 info->screen_base = vm_map_ram(backing->pages, backing->npage,
 490                                 -1, PAGE_KERNEL);
 491                 if (info->screen_base == NULL) {
 492                         psb_gtt_unpin(backing);
 493                         ret = -ENOMEM;
 494                         goto out_unref;
 495                 }
 496                 psbfb->vm_map = 1;
 497         }
 498         info->screen_size = size;
 499 /*      memset(info->screen_base, 0, size); */
 500
 501         if (dev_priv->pg->stolen_size) {
 502                 info->apertures = alloc_apertures(1);
 503                 if (!info->apertures) {
 504                         ret = -ENOMEM;
 505                         goto out_unref;
 506                 }
 507                 info->apertures->ranges[0].base = dev->mode_config.fb_base;
 508                 info->apertures->ranges[0].size = dev_priv->pg->stolen_size;
 509         }
 510
 511         drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 512         drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
 513                                 sizes->fb_width, sizes->fb_height);
 514
 515         info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
 516         info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
 517
 518         info->pixmap.size = 64 * 1024;
 519         info->pixmap.buf_align = 8;
 520         info->pixmap.access_align = 32;
 521         info->pixmap.flags = FB_PIXMAP_SYSTEM;
 522         info->pixmap.scan_align = 1;
 523
 524         dev_info(dev->dev, "allocated %dx%d fb\n",
 525                                         psbfb->base.width, psbfb->base.height);
 526
 527         mutex_unlock(&dev->struct_mutex);
 528         return 0;
 529 out_unref:
 530         if (backing->stolen)
 531                 psb_gtt_free_range(dev, backing);
 532         else {
 533                 if (psbfb->vm_map)
 534                         vm_unmap_ram(info->screen_base, backing->npage);
 535                 drm_gem_object_unreference(&backing->gem);
 536         }
 537 out_err1:
 538         mutex_unlock(&dev->struct_mutex);
 539         psb_gtt_free_range(dev, backing);
 540         return ret;
 541 }
 542
 543 /**
 544  *      psb_user_framebuffer_create     -       create framebuffer
 545  *      @dev: our DRM device
 546  *      @filp: client file
 547  *      @cmd: mode request
 548  *
 549  *      Create a new framebuffer backed by a userspace GEM object
 550  */
 551 static struct drm_framebuffer *psb_user_framebuffer_create
 552                         (struct drm_device *dev, struct drm_file *filp,
 553                          struct drm_mode_fb_cmd *cmd)
 554 {
 555         struct gtt_range *r;
 556         struct drm_gem_object *obj;
 557
 558         /*
 559          *      Find the GEM object and thus the gtt range object that is
 560          *      to back this space
 561          */
 562         obj = drm_gem_object_lookup(dev, filp, cmd->handle);
 563         if (obj == NULL)
 564                 return ERR_PTR(-ENOENT);
 565
 566         /* Let the core code do all the work */
 567         r = container_of(obj, struct gtt_range, gem);
 568         return psb_framebuffer_create(dev, cmd, r);
 569 }
 570
 571 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 572                                                         u16 blue, int regno)
 573 {
 574 }
 575
 576 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
 577                                         u16 *green, u16 *blue, int regno)
 578 {
 579 }
 580
 581 static int psbfb_probe(struct drm_fb_helper *helper,
 582                                 struct drm_fb_helper_surface_size *sizes)
 583 {
 584         struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
 585         int new_fb = 0;
 586         int ret;
 587
 588         if (!helper->fb) {
 589                 ret = psbfb_create(psb_fbdev, sizes);
 590                 if (ret)
 591                         return ret;
 592                 new_fb = 1;
 593         }
 594         return new_fb;
 595 }
 596
 597 struct drm_fb_helper_funcs psb_fb_helper_funcs = {
 598         .gamma_set = psbfb_gamma_set,
 599         .gamma_get = psbfb_gamma_get,
 600         .fb_probe = psbfb_probe,
 601 };
 602
 603 int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
 604 {
 605         struct fb_info *info;
 606         struct psb_framebuffer *psbfb = &fbdev->pfb;
 607
 608         if (fbdev->psb_fb_helper.fbdev) {
 609                 info = fbdev->psb_fb_helper.fbdev;
 610
 611                 /* If this is our base framebuffer then kill any virtual map
 612                    for the framebuffer layer and unpin it */
 613                 if (psbfb->vm_map) {
 614                         vm_unmap_ram(info->screen_base, psbfb->gtt->npage);
 615                         psb_gtt_unpin(psbfb->gtt);
 616                 }
 617                 unregister_framebuffer(info);
 618                 if (info->cmap.len)
 619                         fb_dealloc_cmap(&info->cmap);
 620                 framebuffer_release(info);
 621         }
 622         drm_fb_helper_fini(&fbdev->psb_fb_helper);
 623         drm_framebuffer_cleanup(&psbfb->base);
 624
 625         if (psbfb->gtt) {
 626                 /* FIXME: this is a bit more inside knowledge than I'd like
 627                    but I don't see how to make a fake GEM object of the
 628                    stolen space nicely */
 629                 if (psbfb->gtt->stolen)
 630                         psb_gtt_free_range(dev, psbfb->gtt);
 631                 else
 632                         drm_gem_object_unreference(&psbfb->gtt->gem);
 633         }
 634         return 0;
 635 }
 636
 637 int psb_fbdev_init(struct drm_device *dev)
 638 {
 639         struct psb_fbdev *fbdev;
 640         struct drm_psb_private *dev_priv = dev->dev_private;
 641         int num_crtc;
 642
 643         fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
 644         if (!fbdev) {
 645                 dev_err(dev->dev, "no memory\n");
 646                 return -ENOMEM;
 647         }
 648
 649         dev_priv->fbdev = fbdev;
 650         fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
 651
 652         num_crtc = 2;
 653
 654         drm_fb_helper_init(dev, &fbdev->psb_fb_helper, num_crtc,
 655                                                         INTELFB_CONN_LIMIT);
 656
 657         drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
 658         drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
 659         return 0;
 660 }
 661
 662 void psb_fbdev_fini(struct drm_device *dev)
 663 {
 664         struct drm_psb_private *dev_priv = dev->dev_private;
 665
 666         if (!dev_priv->fbdev)
 667                 return;
 668
 669         psb_fbdev_destroy(dev, dev_priv->fbdev);
 670         kfree(dev_priv->fbdev);
 671         dev_priv->fbdev = NULL;
 672 }
 673
 674 static void psbfb_output_poll_changed(struct drm_device *dev)
 675 {
 676         struct drm_psb_private *dev_priv = dev->dev_private;
 677         struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
 678         drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
 679 }
 680
 681 /**
 682  *      psb_user_framebuffer_create_handle - add hamdle to a framebuffer
 683  *      @fb: framebuffer
 684  *      @file_priv: our DRM file
 685  *      @handle: returned handle
 686  *
 687  *      Our framebuffer object is a GTT range which also contains a GEM
 688  *      object. We need to turn it into a handle for userspace. GEM will do
 689  *      the work for us
 690  */
 691 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 692                                               struct drm_file *file_priv,
 693                                               unsigned int *handle)
 694 {
 695         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 696         struct gtt_range *r = psbfb->gtt;
 697         return drm_gem_handle_create(file_priv, &r->gem, handle);
 698 }
 699
 700 /**
 701  *      psb_user_framebuffer_destroy    -       destruct user created fb
 702  *      @fb: framebuffer
 703  *
 704  *      User framebuffers are backed by GEM objects so all we have to do is
 705  *      clean up a bit and drop the reference, GEM will handle the fallout
 706  */
 707 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
 708 {
 709         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 710         struct gtt_range *r = psbfb->gtt;
 711         struct drm_device *dev = fb->dev;
 712         struct drm_psb_private *dev_priv = dev->dev_private;
 713         struct psb_fbdev *fbdev = dev_priv->fbdev;
 714         struct drm_crtc *crtc;
 715         int reset = 0;
 716
 717         /* Should never get stolen memory for a user fb */
 718         WARN_ON(r->stolen);
 719
 720         /* Check if we are erroneously live */
 721         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 722                 if (crtc->fb == fb)
 723                         reset = 1;
 724
 725         if (reset)
 726                 /*
 727                  * Now force a sane response before we permit the DRM CRTC
 728                  * layer to do stupid things like blank the display. Instead
 729                  * we reset this framebuffer as if the user had forced a reset.
 730                  * We must do this before the cleanup so that the DRM layer
 731                  * doesn't get a chance to stick its oar in where it isn't
 732                  * wanted.
 733                  */
 734                 drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper);
 735
 736         /* Let DRM do its clean up */
 737         drm_framebuffer_cleanup(fb);
 738         /*  We are no longer using the resource in GEM */
 739         drm_gem_object_unreference_unlocked(&r->gem);
 740         kfree(fb);
 741 }
 742
 743 static const struct drm_mode_config_funcs psb_mode_funcs = {
 744         .fb_create = psb_user_framebuffer_create,
 745         .output_poll_changed = psbfb_output_poll_changed,
 746 };
 747
 748 static int psb_create_backlight_property(struct drm_device *dev)
 749 {
 750         struct drm_psb_private *dev_priv
 751                                 = (struct drm_psb_private *) dev->dev_private;
 752         struct drm_property *backlight;
 753
 754         if (dev_priv->backlight_property)
 755                 return 0;
 756
 757         backlight = drm_property_create(dev,
 758                                         DRM_MODE_PROP_RANGE,
 759                                         "backlight",
 760                                         2);
 761         backlight->values[0] = 0;
 762         backlight->values[1] = 100;
 763
 764         dev_priv->backlight_property = backlight;
 765
 766         return 0;
 767 }
 768
 769 static void psb_setup_outputs(struct drm_device *dev)
 770 {
 771         struct drm_psb_private *dev_priv =
 772             (struct drm_psb_private *) dev->dev_private;
 773         struct drm_connector *connector;
 774
 775         drm_mode_create_scaling_mode_property(dev);
 776
 777         psb_create_backlight_property(dev);
 778
 779         if (IS_MRST(dev)) {
 780                 if (dev_priv->iLVDS_enable)
 781                         mrst_lvds_init(dev, &dev_priv->mode_dev);
 782                 else
 783                         dev_err(dev->dev, "DSI is not supported\n");
 784         } else {
 785                 psb_intel_lvds_init(dev, &dev_priv->mode_dev);
 786                 psb_intel_sdvo_init(dev, SDVOB);
 787         }
 788
 789         list_for_each_entry(connector, &dev->mode_config.connector_list,
 790                             head) {
 791                 struct psb_intel_output *psb_intel_output =
 792                     to_psb_intel_output(connector);
 793                 struct drm_encoder *encoder = &psb_intel_output->enc;
 794                 int crtc_mask = 0, clone_mask = 0;
 795
 796                 /* valid crtcs */
 797                 switch (psb_intel_output->type) {
 798                 case INTEL_OUTPUT_SDVO:
 799                         crtc_mask = ((1 << 0) | (1 << 1));
 800                         clone_mask = (1 << INTEL_OUTPUT_SDVO);
 801                         break;
 802                 case INTEL_OUTPUT_LVDS:
 803                         if (IS_MRST(dev))
 804                                 crtc_mask = (1 << 0);
 805                         else
 806                                 crtc_mask = (1 << 1);
 807                         clone_mask = (1 << INTEL_OUTPUT_LVDS);
 808                         break;
 809                 case INTEL_OUTPUT_MIPI:
 810                         crtc_mask = (1 << 0);
 811                         clone_mask = (1 << INTEL_OUTPUT_MIPI);
 812                         break;
 813                 case INTEL_OUTPUT_MIPI2:
 814                         crtc_mask = (1 << 2);
 815                         clone_mask = (1 << INTEL_OUTPUT_MIPI2);
 816                         break;
 817                 case INTEL_OUTPUT_HDMI:
 818                         crtc_mask = (1 << 1);
 819                         clone_mask = (1 << INTEL_OUTPUT_HDMI);
 820                         break;
 821                 }
 822
 823                 encoder->possible_crtcs = crtc_mask;
 824                 encoder->possible_clones =
 825                     psb_intel_connector_clones(dev, clone_mask);
 826
 827         }
 828 }
 829
 830 void psb_modeset_init(struct drm_device *dev)
 831 {
 832         struct drm_psb_private *dev_priv =
 833             (struct drm_psb_private *) dev->dev_private;
 834         struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
 835         int i;
 836
 837         drm_mode_config_init(dev);
 838
 839         dev->mode_config.min_width = 0;
 840         dev->mode_config.min_height = 0;
 841
 842         dev->mode_config.funcs = (void *) &psb_mode_funcs;
 843
 844         /* set memory base */
 845         /* MRST and PSB should use BAR 2*/
 846         pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
 847                                         &(dev->mode_config.fb_base));
 848
 849         /* num pipes is 2 for PSB but 1 for Mrst */
 850         for (i = 0; i < dev_priv->num_pipe; i++)
 851                 psb_intel_crtc_init(dev, i, mode_dev);
 852
 853         dev->mode_config.max_width = 2048;
 854         dev->mode_config.max_height = 2048;
 855
 856         psb_setup_outputs(dev);
 857
 858         /* setup fbs */
 859         /* drm_initial_config(dev); */
 860 }
 861
 862 void psb_modeset_cleanup(struct drm_device *dev)
 863 {
 864         mutex_lock(&dev->struct_mutex);
 865
 866         drm_kms_helper_poll_fini(dev);
 867         psb_fbdev_fini(dev);
 868
 869         drm_mode_config_cleanup(dev);
 870
 871         mutex_unlock(&dev->struct_mutex);
 872 }