drivers/staging/gma500/framebuffer.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 "framebuffer.h"
  40 #include "gtt.h"
  41
  42 #include "mdfld_output.h"
  43
  44 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
  45 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
  46                                               struct drm_file *file_priv,
  47                                               unsigned int *handle);
  48
  49 static const struct drm_framebuffer_funcs psb_fb_funcs = {
  50         .destroy = psb_user_framebuffer_destroy,
  51         .create_handle = psb_user_framebuffer_create_handle,
  52 };
  53
  54 #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
  55
  56 static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
  57                            unsigned blue, unsigned transp,
  58                            struct fb_info *info)
  59 {
  60         struct psb_fbdev *fbdev = info->par;
  61         struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
  62         uint32_t v;
  63
  64         if (!fb)
  65                 return -ENOMEM;
  66
  67         if (regno > 255)
  68                 return 1;
  69
  70         red = CMAP_TOHW(red, info->var.red.length);
  71         blue = CMAP_TOHW(blue, info->var.blue.length);
  72         green = CMAP_TOHW(green, info->var.green.length);
  73         transp = CMAP_TOHW(transp, info->var.transp.length);
  74
  75         v = (red << info->var.red.offset) |
  76             (green << info->var.green.offset) |
  77             (blue << info->var.blue.offset) |
  78             (transp << info->var.transp.offset);
  79
  80         if (regno < 16) {
  81                 switch (fb->bits_per_pixel) {
  82                 case 16:
  83                         ((uint32_t *) info->pseudo_palette)[regno] = v;
  84                         break;
  85                 case 24:
  86                 case 32:
  87                         ((uint32_t *) info->pseudo_palette)[regno] = v;
  88                         break;
  89                 }
  90         }
  91
  92         return 0;
  93 }
  94
  95 static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info)
  96 {
  97         struct psb_fbdev *fbdev = info->par;
  98         struct psb_framebuffer *psbfb = &fbdev->pfb;
  99         struct drm_device *dev = psbfb->base.dev;
 100
 101         /*
 102          *      We have to poke our nose in here. The core fb code assumes
 103          *      panning is part of the hardware that can be invoked before
 104          *      the actual fb is mapped. In our case that isn't quite true.
 105          */
 106         if (psbfb->gtt->npage)
 107                 psb_gtt_roll(dev, psbfb->gtt, var->yoffset);
 108         return 0;
 109 }
 110
 111 void psbfb_suspend(struct drm_device *dev)
 112 {
 113         struct drm_framebuffer *fb = 0;
 114         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 115
 116         console_lock();
 117         mutex_lock(&dev->mode_config.mutex);
 118         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 119                 struct fb_info *info = psbfb->fbdev;
 120                 fb_set_suspend(info, 1);
 121                 drm_fb_helper_blank(FB_BLANK_POWERDOWN, info);
 122         }
 123         mutex_unlock(&dev->mode_config.mutex);
 124         console_unlock();
 125 }
 126
 127 void psbfb_resume(struct drm_device *dev)
 128 {
 129         struct drm_framebuffer *fb = 0;
 130         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 131
 132         console_lock();
 133         mutex_lock(&dev->mode_config.mutex);
 134         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 135                 struct fb_info *info = psbfb->fbdev;
 136                 fb_set_suspend(info, 0);
 137                 drm_fb_helper_blank(FB_BLANK_UNBLANK, info);
 138         }
 139         mutex_unlock(&dev->mode_config.mutex);
 140         console_unlock();
 141         drm_helper_disable_unused_functions(dev);
 142 }
 143
 144 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 145 {
 146         struct psb_framebuffer *psbfb = vma->vm_private_data;
 147         struct drm_device *dev = psbfb->base.dev;
 148         struct drm_psb_private *dev_priv = dev->dev_private;
 149         int page_num;
 150         int i;
 151         unsigned long address;
 152         int ret;
 153         unsigned long pfn;
 154         /* FIXME: assumes fb at stolen base which may not be true */
 155         unsigned long phys_addr = (unsigned long)dev_priv->stolen_base;
 156
 157         page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
 158         address = (unsigned long)vmf->virtual_address;
 159
 160         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 161
 162         for (i = 0; i < page_num; i++) {
 163                 pfn = (phys_addr >> PAGE_SHIFT);
 164
 165                 ret = vm_insert_mixed(vma, address, pfn);
 166                 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
 167                         break;
 168                 else if (unlikely(ret != 0)) {
 169                         ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
 170                         return ret;
 171                 }
 172                 address += PAGE_SIZE;
 173                 phys_addr += PAGE_SIZE;
 174         }
 175         return VM_FAULT_NOPAGE;
 176 }
 177
 178 static void psbfb_vm_open(struct vm_area_struct *vma)
 179 {
 180 }
 181
 182 static void psbfb_vm_close(struct vm_area_struct *vma)
 183 {
 184 }
 185
 186 static struct vm_operations_struct psbfb_vm_ops = {
 187         .fault  = psbfb_vm_fault,
 188         .open   = psbfb_vm_open,
 189         .close  = psbfb_vm_close
 190 };
 191
 192 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 193 {
 194         struct psb_fbdev *fbdev = info->par;
 195         struct psb_framebuffer *psbfb = &fbdev->pfb;
 196
 197         if (vma->vm_pgoff != 0)
 198                 return -EINVAL;
 199         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
 200                 return -EINVAL;
 201
 202         if (!psbfb->addr_space)
 203                 psbfb->addr_space = vma->vm_file->f_mapping;
 204         /*
 205          * If this is a GEM object then info->screen_base is the virtual
 206          * kernel remapping of the object. FIXME: Review if this is
 207          * suitable for our mmap work
 208          */
 209         vma->vm_ops = &psbfb_vm_ops;
 210         vma->vm_private_data = (void *)psbfb;
 211         vma->vm_flags |= VM_RESERVED | VM_IO |
 212                                         VM_MIXEDMAP | VM_DONTEXPAND;
 213         return 0;
 214 }
 215
 216 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
 217                                                 unsigned long arg)
 218 {
 219         return -ENOTTY;
 220 }
 221
 222 static struct fb_ops psbfb_ops = {
 223         .owner = THIS_MODULE,
 224         .fb_check_var = drm_fb_helper_check_var,
 225         .fb_set_par = drm_fb_helper_set_par,
 226         .fb_blank = drm_fb_helper_blank,
 227         .fb_setcolreg = psbfb_setcolreg,
 228         .fb_fillrect = cfb_fillrect,
 229         .fb_copyarea = psbfb_copyarea,
 230         .fb_imageblit = cfb_imageblit,
 231         .fb_mmap = psbfb_mmap,
 232         .fb_sync = psbfb_sync,
 233         .fb_ioctl = psbfb_ioctl,
 234 };
 235
 236 static struct fb_ops psbfb_roll_ops = {
 237         .owner = THIS_MODULE,
 238         .fb_check_var = drm_fb_helper_check_var,
 239         .fb_set_par = drm_fb_helper_set_par,
 240         .fb_blank = drm_fb_helper_blank,
 241         .fb_setcolreg = psbfb_setcolreg,
 242         .fb_fillrect = cfb_fillrect,
 243         .fb_copyarea = cfb_copyarea,
 244         .fb_imageblit = cfb_imageblit,
 245         .fb_pan_display = psbfb_pan,
 246         .fb_mmap = psbfb_mmap,
 247         .fb_sync = psbfb_sync,
 248         .fb_ioctl = psbfb_ioctl,
 249 };
 250
 251 static struct fb_ops psbfb_unaccel_ops = {
 252         .owner = THIS_MODULE,
 253         .fb_check_var = drm_fb_helper_check_var,
 254         .fb_set_par = drm_fb_helper_set_par,
 255         .fb_blank = drm_fb_helper_blank,
 256         .fb_setcolreg = psbfb_setcolreg,
 257         .fb_fillrect = cfb_fillrect,
 258         .fb_copyarea = cfb_copyarea,
 259         .fb_imageblit = cfb_imageblit,
 260         .fb_mmap = psbfb_mmap,
 261         .fb_ioctl = psbfb_ioctl,
 262 };
 263
 264 /**
 265  *      psb_framebuffer_init    -       initialize a framebuffer
 266  *      @dev: our DRM device
 267  *      @fb: framebuffer to set up
 268  *      @mode_cmd: mode description
 269  *      @gt: backing object
 270  *
 271  *      Configure and fill in the boilerplate for our frame buffer. Return
 272  *      0 on success or an error code if we fail.
 273  */
 274 static int psb_framebuffer_init(struct drm_device *dev,
 275                                         struct psb_framebuffer *fb,
 276                                         struct drm_mode_fb_cmd *mode_cmd,
 277                                         struct gtt_range *gt)
 278 {
 279         int ret;
 280
 281         if (mode_cmd->pitch & 63)
 282                 return -EINVAL;
 283         switch (mode_cmd->bpp) {
 284         case 8:
 285         case 16:
 286         case 24:
 287         case 32:
 288                 break;
 289         default:
 290                 return -EINVAL;
 291         }
 292         ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
 293         if (ret) {
 294                 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
 295                 return ret;
 296         }
 297         drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
 298         fb->gtt = gt;
 299         return 0;
 300 }
 301
 302 /**
 303  *      psb_framebuffer_create  -       create a framebuffer backed by gt
 304  *      @dev: our DRM device
 305  *      @mode_cmd: the description of the requested mode
 306  *      @gt: the backing object
 307  *
 308  *      Create a framebuffer object backed by the gt, and fill in the
 309  *      boilerplate required
 310  *
 311  *      TODO: review object references
 312  */
 313
 314 static struct drm_framebuffer *psb_framebuffer_create
 315                         (struct drm_device *dev,
 316                          struct drm_mode_fb_cmd *mode_cmd,
 317                          struct gtt_range *gt)
 318 {
 319         struct psb_framebuffer *fb;
 320         int ret;
 321
 322         fb = kzalloc(sizeof(*fb), GFP_KERNEL);
 323         if (!fb)
 324                 return ERR_PTR(-ENOMEM);
 325
 326         ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
 327         if (ret) {
 328                 kfree(fb);
 329                 return ERR_PTR(ret);
 330         }
 331         return &fb->base;
 332 }
 333
 334 /**
 335  *      psbfb_alloc             -       allocate frame buffer memory
 336  *      @dev: the DRM device
 337  *      @aligned_size: space needed
 338  *      @force: fall back to GEM buffers if need be
 339  *
 340  *      Allocate the frame buffer. In the usual case we get a GTT range that
 341  *      is stolen memory backed and life is simple. If there isn't sufficient
 342  *      stolen memory or the system has no stolen memory we allocate a range
 343  *      and back it with a GEM object.
 344  *
 345  *      In this case the GEM object has no handle.
 346  */
 347 static struct gtt_range *psbfb_alloc(struct drm_device *dev,
 348                                                 int aligned_size, int force)
 349 {
 350         struct gtt_range *backing;
 351         /* Begin by trying to use stolen memory backing */
 352         backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
 353         if (backing) {
 354                 if (drm_gem_private_object_init(dev,
 355                                         &backing->gem, aligned_size) == 0)
 356                         return backing;
 357                 psb_gtt_free_range(dev, backing);
 358         }
 359         if (!force)
 360                 return NULL;
 361
 362         /* Next try using GEM host memory */
 363         backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0);
 364         if (backing == NULL)
 365                 return NULL;
 366
 367         /* Now back it with an object */
 368         if (drm_gem_object_init(dev, &backing->gem, aligned_size) != 0) {
 369                 psb_gtt_free_range(dev, backing);
 370                 return NULL;
 371         }
 372         return backing;
 373 }
 374
 375 /**
 376  *      psbfb_create            -       create a framebuffer
 377  *      @fbdev: the framebuffer device
 378  *      @sizes: specification of the layout
 379  *
 380  *      Create a framebuffer to the specifications provided
 381  */
 382 static int psbfb_create(struct psb_fbdev *fbdev,
 383                                 struct drm_fb_helper_surface_size *sizes)
 384 {
 385         struct drm_device *dev = fbdev->psb_fb_helper.dev;
 386         struct drm_psb_private *dev_priv = dev->dev_private;
 387         struct fb_info *info;
 388         struct drm_framebuffer *fb;
 389         struct psb_framebuffer *psbfb = &fbdev->pfb;
 390         struct drm_mode_fb_cmd mode_cmd;
 391         struct device *device = &dev->pdev->dev;
 392         int size;
 393         int ret;
 394         struct gtt_range *backing;
 395         int gtt_roll = 1;
 396
 397         mode_cmd.width = sizes->surface_width;
 398         mode_cmd.height = sizes->surface_height;
 399         mode_cmd.bpp = sizes->surface_bpp;
 400
 401         /* No 24bit packed */
 402         if (mode_cmd.bpp == 24)
 403                 mode_cmd.bpp = 32;
 404
 405         /* Acceleration via the GTT requires pitch to be 4096 byte aligned
 406            (ie 1024 or 2048 pixels in normal use) */
 407         mode_cmd.pitch =  ALIGN(mode_cmd.width * ((mode_cmd.bpp + 7) / 8), 4096);
 408         mode_cmd.depth = sizes->surface_depth;
 409
 410         size = mode_cmd.pitch * mode_cmd.height;
 411         size = ALIGN(size, PAGE_SIZE);
 412
 413         /* Allocate the framebuffer in the GTT with stolen page backing */
 414         backing = psbfb_alloc(dev, size, 0);
 415         if (backing == NULL) {
 416                 /*
 417                  *      We couldn't get the space we wanted, fall back to the
 418                  *      display engine requirement instead.  The HW requires
 419                  *      the pitch to be 64 byte aligned
 420                  */
 421
 422                 gtt_roll = 0;   /* Don't use GTT accelerated scrolling */
 423
 424                 mode_cmd.pitch =  ALIGN(mode_cmd.width * ((mode_cmd.bpp + 7) / 8), 64);
 425                 mode_cmd.depth = sizes->surface_depth;
 426
 427                 size = mode_cmd.pitch * mode_cmd.height;
 428                 size = ALIGN(size, PAGE_SIZE);
 429
 430                 /* Allocate the framebuffer in the GTT with stolen page
 431                    backing when there is room */
 432                 backing = psbfb_alloc(dev, size, 1);
 433                 if (backing == NULL)
 434                         return -ENOMEM;
 435         }
 436
 437         mutex_lock(&dev->struct_mutex);
 438
 439         info = framebuffer_alloc(0, device);
 440         if (!info) {
 441                 ret = -ENOMEM;
 442                 goto out_err1;
 443         }
 444         info->par = fbdev;
 445
 446         ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
 447         if (ret)
 448                 goto out_unref;
 449
 450         fb = &psbfb->base;
 451         psbfb->fbdev = info;
 452
 453         fbdev->psb_fb_helper.fb = fb;
 454         fbdev->psb_fb_helper.fbdev = info;
 455
 456         strcpy(info->fix.id, "psbfb");
 457
 458         info->flags = FBINFO_DEFAULT;
 459         if (gtt_roll) { /* GTT rolling seems best */
 460                 info->fbops = &psbfb_roll_ops;
 461                 info->flags |= FBINFO_HWACCEL_YPAN;
 462         }
 463         else if (dev_priv->ops->accel_2d)       /* 2D engine */
 464                 info->fbops = &psbfb_ops;
 465         else    /* Software */
 466                 info->fbops = &psbfb_unaccel_ops;
 467
 468         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 469         if (ret) {
 470                 ret = -ENOMEM;
 471                 goto out_unref;
 472         }
 473
 474         info->fix.smem_start = dev->mode_config.fb_base;
 475         info->fix.smem_len = size;
 476         info->fix.ywrapstep = gtt_roll;
 477         info->fix.ypanstep = gtt_roll;
 478
 479         if (backing->stolen) {
 480                 /* Accessed stolen memory directly */
 481                 info->screen_base = (char *)dev_priv->vram_addr +
 482                                                         backing->offset;
 483         } else {
 484                 /* Pin the pages into the GTT and create a mapping to them */
 485                 psb_gtt_pin(backing);
 486                 info->screen_base = vm_map_ram(backing->pages, backing->npage,
 487                                 -1, PAGE_KERNEL);
 488                 if (info->screen_base == NULL) {
 489                         psb_gtt_unpin(backing);
 490                         ret = -ENOMEM;
 491                         goto out_unref;
 492                 }
 493                 psbfb->vm_map = 1;
 494         }
 495         info->screen_size = size;
 496
 497         if (dev_priv->gtt.stolen_size) {
 498                 info->apertures = alloc_apertures(1);
 499                 if (!info->apertures) {
 500                         ret = -ENOMEM;
 501                         goto out_unref;
 502                 }
 503                 info->apertures->ranges[0].base = dev->mode_config.fb_base;
 504                 info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
 505         }
 506
 507         drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 508         drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
 509                                 sizes->fb_width, sizes->fb_height);
 510
 511         info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
 512         info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
 513
 514         info->pixmap.size = 64 * 1024;
 515         info->pixmap.buf_align = 8;
 516         info->pixmap.access_align = 32;
 517         info->pixmap.flags = FB_PIXMAP_SYSTEM;
 518         info->pixmap.scan_align = 1;
 519
 520         dev_info(dev->dev, "allocated %dx%d fb\n",
 521                                         psbfb->base.width, psbfb->base.height);
 522
 523         mutex_unlock(&dev->struct_mutex);
 524         return 0;
 525 out_unref:
 526         if (backing->stolen)
 527                 psb_gtt_free_range(dev, backing);
 528         else {
 529                 if (psbfb->vm_map)
 530                         vm_unmap_ram(info->screen_base, backing->npage);
 531                 drm_gem_object_unreference(&backing->gem);
 532         }
 533 out_err1:
 534         mutex_unlock(&dev->struct_mutex);
 535         psb_gtt_free_range(dev, backing);
 536         return ret;
 537 }
 538
 539 /**
 540  *      psb_user_framebuffer_create     -       create framebuffer
 541  *      @dev: our DRM device
 542  *      @filp: client file
 543  *      @cmd: mode request
 544  *
 545  *      Create a new framebuffer backed by a userspace GEM object
 546  */
 547 static struct drm_framebuffer *psb_user_framebuffer_create
 548                         (struct drm_device *dev, struct drm_file *filp,
 549                          struct drm_mode_fb_cmd *cmd)
 550 {
 551         struct gtt_range *r;
 552         struct drm_gem_object *obj;
 553
 554         /*
 555          *      Find the GEM object and thus the gtt range object that is
 556          *      to back this space
 557          */
 558         obj = drm_gem_object_lookup(dev, filp, cmd->handle);
 559         if (obj == NULL)
 560                 return ERR_PTR(-ENOENT);
 561
 562         /* Let the core code do all the work */
 563         r = container_of(obj, struct gtt_range, gem);
 564         return psb_framebuffer_create(dev, cmd, r);
 565 }
 566
 567 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 568                                                         u16 blue, int regno)
 569 {
 570 }
 571
 572 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
 573                                         u16 *green, u16 *blue, int regno)
 574 {
 575 }
 576
 577 static int psbfb_probe(struct drm_fb_helper *helper,
 578                                 struct drm_fb_helper_surface_size *sizes)
 579 {
 580         struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
 581         int new_fb = 0;
 582         int ret;
 583
 584         if (!helper->fb) {
 585                 ret = psbfb_create(psb_fbdev, sizes);
 586                 if (ret)
 587                         return ret;
 588                 new_fb = 1;
 589         }
 590         return new_fb;
 591 }
 592
 593 struct drm_fb_helper_funcs psb_fb_helper_funcs = {
 594         .gamma_set = psbfb_gamma_set,
 595         .gamma_get = psbfb_gamma_get,
 596         .fb_probe = psbfb_probe,
 597 };
 598
 599 int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
 600 {
 601         struct fb_info *info;
 602         struct psb_framebuffer *psbfb = &fbdev->pfb;
 603
 604         if (fbdev->psb_fb_helper.fbdev) {
 605                 info = fbdev->psb_fb_helper.fbdev;
 606
 607                 /* If this is our base framebuffer then kill any virtual map
 608                    for the framebuffer layer and unpin it */
 609                 if (psbfb->vm_map) {
 610                         vm_unmap_ram(info->screen_base, psbfb->gtt->npage);
 611                         psb_gtt_unpin(psbfb->gtt);
 612                 }
 613                 unregister_framebuffer(info);
 614                 if (info->cmap.len)
 615                         fb_dealloc_cmap(&info->cmap);
 616                 framebuffer_release(info);
 617         }
 618         drm_fb_helper_fini(&fbdev->psb_fb_helper);
 619         drm_framebuffer_cleanup(&psbfb->base);
 620
 621         if (psbfb->gtt)
 622                 drm_gem_object_unreference(&psbfb->gtt->gem);
 623         return 0;
 624 }
 625
 626 int psb_fbdev_init(struct drm_device *dev)
 627 {
 628         struct psb_fbdev *fbdev;
 629         struct drm_psb_private *dev_priv = dev->dev_private;
 630
 631         fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
 632         if (!fbdev) {
 633                 dev_err(dev->dev, "no memory\n");
 634                 return -ENOMEM;
 635         }
 636
 637         dev_priv->fbdev = fbdev;
 638         fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
 639
 640         drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs,
 641                                                         INTELFB_CONN_LIMIT);
 642
 643         drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
 644         drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
 645         return 0;
 646 }
 647
 648 void psb_fbdev_fini(struct drm_device *dev)
 649 {
 650         struct drm_psb_private *dev_priv = dev->dev_private;
 651
 652         if (!dev_priv->fbdev)
 653                 return;
 654
 655         psb_fbdev_destroy(dev, dev_priv->fbdev);
 656         kfree(dev_priv->fbdev);
 657         dev_priv->fbdev = NULL;
 658 }
 659
 660 static void psbfb_output_poll_changed(struct drm_device *dev)
 661 {
 662         struct drm_psb_private *dev_priv = dev->dev_private;
 663         struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
 664         drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
 665 }
 666
 667 /**
 668  *      psb_user_framebuffer_create_handle - add hamdle to a framebuffer
 669  *      @fb: framebuffer
 670  *      @file_priv: our DRM file
 671  *      @handle: returned handle
 672  *
 673  *      Our framebuffer object is a GTT range which also contains a GEM
 674  *      object. We need to turn it into a handle for userspace. GEM will do
 675  *      the work for us
 676  */
 677 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 678                                               struct drm_file *file_priv,
 679                                               unsigned int *handle)
 680 {
 681         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 682         struct gtt_range *r = psbfb->gtt;
 683         return drm_gem_handle_create(file_priv, &r->gem, handle);
 684 }
 685
 686 /**
 687  *      psb_user_framebuffer_destroy    -       destruct user created fb
 688  *      @fb: framebuffer
 689  *
 690  *      User framebuffers are backed by GEM objects so all we have to do is
 691  *      clean up a bit and drop the reference, GEM will handle the fallout
 692  */
 693 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
 694 {
 695         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 696         struct gtt_range *r = psbfb->gtt;
 697         struct drm_device *dev = fb->dev;
 698         struct drm_psb_private *dev_priv = dev->dev_private;
 699         struct psb_fbdev *fbdev = dev_priv->fbdev;
 700         struct drm_crtc *crtc;
 701         int reset = 0;
 702
 703         /* Should never get stolen memory for a user fb */
 704         WARN_ON(r->stolen);
 705
 706         /* Check if we are erroneously live */
 707         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 708                 if (crtc->fb == fb)
 709                         reset = 1;
 710
 711         if (reset)
 712                 /*
 713                  * Now force a sane response before we permit the DRM CRTC
 714                  * layer to do stupid things like blank the display. Instead
 715                  * we reset this framebuffer as if the user had forced a reset.
 716                  * We must do this before the cleanup so that the DRM layer
 717                  * doesn't get a chance to stick its oar in where it isn't
 718                  * wanted.
 719                  */
 720                 drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper);
 721
 722         /* Let DRM do its clean up */
 723         drm_framebuffer_cleanup(fb);
 724         /*  We are no longer using the resource in GEM */
 725         drm_gem_object_unreference_unlocked(&r->gem);
 726         kfree(fb);
 727 }
 728
 729 static const struct drm_mode_config_funcs psb_mode_funcs = {
 730         .fb_create = psb_user_framebuffer_create,
 731         .output_poll_changed = psbfb_output_poll_changed,
 732 };
 733
 734 static int psb_create_backlight_property(struct drm_device *dev)
 735 {
 736         struct drm_psb_private *dev_priv = dev->dev_private;
 737         struct drm_property *backlight;
 738
 739         if (dev_priv->backlight_property)
 740                 return 0;
 741
 742         backlight = drm_property_create(dev, DRM_MODE_PROP_RANGE,
 743                                                         "backlight", 2);
 744         backlight->values[0] = 0;
 745         backlight->values[1] = 100;
 746
 747         dev_priv->backlight_property = backlight;
 748
 749         return 0;
 750 }
 751
 752 static void psb_setup_outputs(struct drm_device *dev)
 753 {
 754         struct drm_psb_private *dev_priv = dev->dev_private;
 755         struct drm_connector *connector;
 756
 757         drm_mode_create_scaling_mode_property(dev);
 758         psb_create_backlight_property(dev);
 759
 760         dev_priv->ops->output_init(dev);
 761
 762         list_for_each_entry(connector, &dev->mode_config.connector_list,
 763                             head) {
 764                 struct psb_intel_output *psb_intel_output =
 765                     to_psb_intel_output(connector);
 766                 struct drm_encoder *encoder = &psb_intel_output->enc;
 767                 int crtc_mask = 0, clone_mask = 0;
 768
 769                 /* valid crtcs */
 770                 switch (psb_intel_output->type) {
 771                 case INTEL_OUTPUT_ANALOG:
 772                         crtc_mask = (1 << 0);
 773                         clone_mask = (1 << INTEL_OUTPUT_ANALOG);
 774                         break;
 775                 case INTEL_OUTPUT_SDVO:
 776                         crtc_mask = ((1 << 0) | (1 << 1));
 777                         clone_mask = (1 << INTEL_OUTPUT_SDVO);
 778                         break;
 779                 case INTEL_OUTPUT_LVDS:
 780                         if (IS_MRST(dev))
 781                                 crtc_mask = (1 << 0);
 782                         else
 783                                 crtc_mask = (1 << 1);
 784                         clone_mask = (1 << INTEL_OUTPUT_LVDS);
 785                         break;
 786                 case INTEL_OUTPUT_MIPI:
 787                         crtc_mask = (1 << 0);
 788                         clone_mask = (1 << INTEL_OUTPUT_MIPI);
 789                         break;
 790                 case INTEL_OUTPUT_MIPI2:
 791                         crtc_mask = (1 << 2);
 792                         clone_mask = (1 << INTEL_OUTPUT_MIPI2);
 793                         break;
 794                 case INTEL_OUTPUT_HDMI:
 795                         /* HDMI on crtc 1 for SoC devices and crtc 0 for
 796                            Cedarview. HDMI on Poulsbo is only via external
 797                            logic */
 798                         if (IS_MFLD(dev) || IS_MRST(dev))
 799                                 crtc_mask = (1 << 1);
 800                         else
 801                                 crtc_mask = (1 << 0);   /* Cedarview */
 802                         clone_mask = (1 << INTEL_OUTPUT_HDMI);
 803                         break;
 804                 }
 805                 encoder->possible_crtcs = crtc_mask;
 806                 encoder->possible_clones =
 807                     psb_intel_connector_clones(dev, clone_mask);
 808         }
 809 }
 810
 811 void psb_modeset_init(struct drm_device *dev)
 812 {
 813         struct drm_psb_private *dev_priv =
 814             (struct drm_psb_private *) dev->dev_private;
 815         struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
 816         int i;
 817
 818         drm_mode_config_init(dev);
 819
 820         dev->mode_config.min_width = 0;
 821         dev->mode_config.min_height = 0;
 822
 823         dev->mode_config.funcs = (void *) &psb_mode_funcs;
 824
 825         /* set memory base */
 826         /* MRST and PSB should use BAR 2*/
 827         pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
 828                                         &(dev->mode_config.fb_base));
 829
 830         /* num pipes is 2 for PSB but 1 for Mrst */
 831         for (i = 0; i < dev_priv->num_pipe; i++)
 832                 psb_intel_crtc_init(dev, i, mode_dev);
 833
 834         dev->mode_config.max_width = 2048;
 835         dev->mode_config.max_height = 2048;
 836
 837         psb_setup_outputs(dev);
 838 }
 839
 840 void psb_modeset_cleanup(struct drm_device *dev)
 841 {
 842         mutex_lock(&dev->struct_mutex);
 843
 844         drm_kms_helper_poll_fini(dev);
 845         psb_fbdev_fini(dev);
 846         drm_mode_config_cleanup(dev);
 847
 848         mutex_unlock(&dev->struct_mutex);
 849 }