drivers/gpu/drm/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/pfn_t.h>
  25 #include <linux/mm.h>
  26 #include <linux/tty.h>
  27 #include <linux/slab.h>
  28 #include <linux/delay.h>
  29 #include <linux/fb.h>
  30 #include <linux/init.h>
  31 #include <linux/console.h>
  32
  33 #include <drm/drmP.h>
  34 #include <drm/drm.h>
  35 #include <drm/drm_crtc.h>
  36 #include <drm/drm_fb_helper.h>
  37
  38 #include "psb_drv.h"
  39 #include "psb_intel_reg.h"
  40 #include "psb_intel_drv.h"
  41 #include "framebuffer.h"
  42 #include "gtt.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                 /* GTT roll shifts in 4K pages, we need to shift the right
 108                    number of pages */
 109                 int pages = info->fix.line_length >> 12;
 110                 psb_gtt_roll(dev, psbfb->gtt, var->yoffset * pages);
 111         }
 112         return 0;
 113 }
 114
 115 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 116 {
 117         struct psb_framebuffer *psbfb = vma->vm_private_data;
 118         struct drm_device *dev = psbfb->base.dev;
 119         struct drm_psb_private *dev_priv = dev->dev_private;
 120         int page_num;
 121         int i;
 122         unsigned long address;
 123         int ret;
 124         unsigned long pfn;
 125         unsigned long phys_addr = (unsigned long)dev_priv->stolen_base +
 126                                   psbfb->gtt->offset;
 127
 128         page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
 129         address = (unsigned long)vmf->virtual_address - (vmf->pgoff << PAGE_SHIFT);
 130
 131         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 132
 133         for (i = 0; i < page_num; i++) {
 134                 pfn = (phys_addr >> PAGE_SHIFT);
 135
 136                 ret = vm_insert_mixed(vma, address,
 137                                 __pfn_to_pfn_t(pfn, PFN_DEV));
 138                 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
 139                         break;
 140                 else if (unlikely(ret != 0)) {
 141                         ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
 142                         return ret;
 143                 }
 144                 address += PAGE_SIZE;
 145                 phys_addr += PAGE_SIZE;
 146         }
 147         return VM_FAULT_NOPAGE;
 148 }
 149
 150 static void psbfb_vm_open(struct vm_area_struct *vma)
 151 {
 152 }
 153
 154 static void psbfb_vm_close(struct vm_area_struct *vma)
 155 {
 156 }
 157
 158 static const struct vm_operations_struct psbfb_vm_ops = {
 159         .fault  = psbfb_vm_fault,
 160         .open   = psbfb_vm_open,
 161         .close  = psbfb_vm_close
 162 };
 163
 164 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 165 {
 166         struct psb_fbdev *fbdev = info->par;
 167         struct psb_framebuffer *psbfb = &fbdev->pfb;
 168
 169         if (vma->vm_pgoff != 0)
 170                 return -EINVAL;
 171         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
 172                 return -EINVAL;
 173
 174         if (!psbfb->addr_space)
 175                 psbfb->addr_space = vma->vm_file->f_mapping;
 176         /*
 177          * If this is a GEM object then info->screen_base is the virtual
 178          * kernel remapping of the object. FIXME: Review if this is
 179          * suitable for our mmap work
 180          */
 181         vma->vm_ops = &psbfb_vm_ops;
 182         vma->vm_private_data = (void *)psbfb;
 183         vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
 184         return 0;
 185 }
 186
 187 static struct fb_ops psbfb_ops = {
 188         .owner = THIS_MODULE,
 189         .fb_check_var = drm_fb_helper_check_var,
 190         .fb_set_par = drm_fb_helper_set_par,
 191         .fb_blank = drm_fb_helper_blank,
 192         .fb_setcolreg = psbfb_setcolreg,
 193         .fb_fillrect = drm_fb_helper_cfb_fillrect,
 194         .fb_copyarea = psbfb_copyarea,
 195         .fb_imageblit = drm_fb_helper_cfb_imageblit,
 196         .fb_mmap = psbfb_mmap,
 197         .fb_sync = psbfb_sync,
 198 };
 199
 200 static struct fb_ops psbfb_roll_ops = {
 201         .owner = THIS_MODULE,
 202         .fb_check_var = drm_fb_helper_check_var,
 203         .fb_set_par = drm_fb_helper_set_par,
 204         .fb_blank = drm_fb_helper_blank,
 205         .fb_setcolreg = psbfb_setcolreg,
 206         .fb_fillrect = drm_fb_helper_cfb_fillrect,
 207         .fb_copyarea = drm_fb_helper_cfb_copyarea,
 208         .fb_imageblit = drm_fb_helper_cfb_imageblit,
 209         .fb_pan_display = psbfb_pan,
 210         .fb_mmap = psbfb_mmap,
 211 };
 212
 213 static struct fb_ops psbfb_unaccel_ops = {
 214         .owner = THIS_MODULE,
 215         .fb_check_var = drm_fb_helper_check_var,
 216         .fb_set_par = drm_fb_helper_set_par,
 217         .fb_blank = drm_fb_helper_blank,
 218         .fb_setcolreg = psbfb_setcolreg,
 219         .fb_fillrect = drm_fb_helper_cfb_fillrect,
 220         .fb_copyarea = drm_fb_helper_cfb_copyarea,
 221         .fb_imageblit = drm_fb_helper_cfb_imageblit,
 222         .fb_mmap = psbfb_mmap,
 223 };
 224
 225 /**
 226  *      psb_framebuffer_init    -       initialize a framebuffer
 227  *      @dev: our DRM device
 228  *      @fb: framebuffer to set up
 229  *      @mode_cmd: mode description
 230  *      @gt: backing object
 231  *
 232  *      Configure and fill in the boilerplate for our frame buffer. Return
 233  *      0 on success or an error code if we fail.
 234  */
 235 static int psb_framebuffer_init(struct drm_device *dev,
 236                                         struct psb_framebuffer *fb,
 237                                         const struct drm_mode_fb_cmd2 *mode_cmd,
 238                                         struct gtt_range *gt)
 239 {
 240         u32 bpp, depth;
 241         int ret;
 242
 243         drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
 244
 245         if (mode_cmd->pitches[0] & 63)
 246                 return -EINVAL;
 247         switch (bpp) {
 248         case 8:
 249         case 16:
 250         case 24:
 251         case 32:
 252                 break;
 253         default:
 254                 return -EINVAL;
 255         }
 256         drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
 257         fb->gtt = gt;
 258         ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
 259         if (ret) {
 260                 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
 261                 return ret;
 262         }
 263         return 0;
 264 }
 265
 266 /**
 267  *      psb_framebuffer_create  -       create a framebuffer backed by gt
 268  *      @dev: our DRM device
 269  *      @mode_cmd: the description of the requested mode
 270  *      @gt: the backing object
 271  *
 272  *      Create a framebuffer object backed by the gt, and fill in the
 273  *      boilerplate required
 274  *
 275  *      TODO: review object references
 276  */
 277
 278 static struct drm_framebuffer *psb_framebuffer_create
 279                         (struct drm_device *dev,
 280                          const struct drm_mode_fb_cmd2 *mode_cmd,
 281                          struct gtt_range *gt)
 282 {
 283         struct psb_framebuffer *fb;
 284         int ret;
 285
 286         fb = kzalloc(sizeof(*fb), GFP_KERNEL);
 287         if (!fb)
 288                 return ERR_PTR(-ENOMEM);
 289
 290         ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
 291         if (ret) {
 292                 kfree(fb);
 293                 return ERR_PTR(ret);
 294         }
 295         return &fb->base;
 296 }
 297
 298 /**
 299  *      psbfb_alloc             -       allocate frame buffer memory
 300  *      @dev: the DRM device
 301  *      @aligned_size: space needed
 302  *      @force: fall back to GEM buffers if need be
 303  *
 304  *      Allocate the frame buffer. In the usual case we get a GTT range that
 305  *      is stolen memory backed and life is simple. If there isn't sufficient
 306  *      we fail as we don't have the virtual mapping space to really vmap it
 307  *      and the kernel console code can't handle non linear framebuffers.
 308  *
 309  *      Re-address this as and if the framebuffer layer grows this ability.
 310  */
 311 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
 312 {
 313         struct gtt_range *backing;
 314         /* Begin by trying to use stolen memory backing */
 315         backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1, PAGE_SIZE);
 316         if (backing) {
 317                 drm_gem_private_object_init(dev, &backing->gem, aligned_size);
 318                 return backing;
 319         }
 320         return NULL;
 321 }
 322
 323 /**
 324  *      psbfb_create            -       create a framebuffer
 325  *      @fbdev: the framebuffer device
 326  *      @sizes: specification of the layout
 327  *
 328  *      Create a framebuffer to the specifications provided
 329  */
 330 static int psbfb_create(struct psb_fbdev *fbdev,
 331                                 struct drm_fb_helper_surface_size *sizes)
 332 {
 333         struct drm_device *dev = fbdev->psb_fb_helper.dev;
 334         struct drm_psb_private *dev_priv = dev->dev_private;
 335         struct fb_info *info;
 336         struct drm_framebuffer *fb;
 337         struct psb_framebuffer *psbfb = &fbdev->pfb;
 338         struct drm_mode_fb_cmd2 mode_cmd;
 339         int size;
 340         int ret;
 341         struct gtt_range *backing;
 342         u32 bpp, depth;
 343         int gtt_roll = 0;
 344         int pitch_lines = 0;
 345
 346         mode_cmd.width = sizes->surface_width;
 347         mode_cmd.height = sizes->surface_height;
 348         bpp = sizes->surface_bpp;
 349         depth = sizes->surface_depth;
 350
 351         /* No 24bit packed */
 352         if (bpp == 24)
 353                 bpp = 32;
 354
 355         do {
 356                 /*
 357                  * Acceleration via the GTT requires pitch to be
 358                  * power of two aligned. Preferably page but less
 359                  * is ok with some fonts
 360                  */
 361                 mode_cmd.pitches[0] =  ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines);
 362
 363                 size = mode_cmd.pitches[0] * mode_cmd.height;
 364                 size = ALIGN(size, PAGE_SIZE);
 365
 366                 /* Allocate the fb in the GTT with stolen page backing */
 367                 backing = psbfb_alloc(dev, size);
 368
 369                 if (pitch_lines)
 370                         pitch_lines *= 2;
 371                 else
 372                         pitch_lines = 1;
 373                 gtt_roll++;
 374         } while (backing == NULL && pitch_lines <= 16);
 375
 376         /* The final pitch we accepted if we succeeded */
 377         pitch_lines /= 2;
 378
 379         if (backing == NULL) {
 380                 /*
 381                  *      We couldn't get the space we wanted, fall back to the
 382                  *      display engine requirement instead.  The HW requires
 383                  *      the pitch to be 64 byte aligned
 384                  */
 385
 386                 gtt_roll = 0;   /* Don't use GTT accelerated scrolling */
 387                 pitch_lines = 64;
 388
 389                 mode_cmd.pitches[0] =  ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64);
 390
 391                 size = mode_cmd.pitches[0] * mode_cmd.height;
 392                 size = ALIGN(size, PAGE_SIZE);
 393
 394                 /* Allocate the framebuffer in the GTT with stolen page backing */
 395                 backing = psbfb_alloc(dev, size);
 396                 if (backing == NULL)
 397                         return -ENOMEM;
 398         }
 399
 400         memset(dev_priv->vram_addr + backing->offset, 0, size);
 401
 402         info = drm_fb_helper_alloc_fbi(&fbdev->psb_fb_helper);
 403         if (IS_ERR(info)) {
 404                 ret = PTR_ERR(info);
 405                 goto err_free_range;
 406         }
 407         info->par = fbdev;
 408
 409         mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
 410
 411         ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
 412         if (ret)
 413                 goto err_release;
 414
 415         fb = &psbfb->base;
 416         psbfb->fbdev = info;
 417
 418         fbdev->psb_fb_helper.fb = fb;
 419
 420         drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
 421         strcpy(info->fix.id, "psbdrmfb");
 422
 423         info->flags = FBINFO_DEFAULT;
 424         if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */
 425                 info->fbops = &psbfb_ops;
 426         else if (gtt_roll) {    /* GTT rolling seems best */
 427                 info->fbops = &psbfb_roll_ops;
 428                 info->flags |= FBINFO_HWACCEL_YPAN;
 429         } else  /* Software */
 430                 info->fbops = &psbfb_unaccel_ops;
 431
 432         info->fix.smem_start = dev->mode_config.fb_base;
 433         info->fix.smem_len = size;
 434         info->fix.ywrapstep = gtt_roll;
 435         info->fix.ypanstep = 0;
 436
 437         /* Accessed stolen memory directly */
 438         info->screen_base = dev_priv->vram_addr + backing->offset;
 439         info->screen_size = size;
 440
 441         if (dev_priv->gtt.stolen_size) {
 442                 info->apertures->ranges[0].base = dev->mode_config.fb_base;
 443                 info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
 444         }
 445
 446         drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
 447                                 sizes->fb_width, sizes->fb_height);
 448
 449         info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
 450         info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
 451
 452         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 453
 454         dev_dbg(dev->dev, "allocated %dx%d fb\n",
 455                                         psbfb->base.width, psbfb->base.height);
 456
 457         return 0;
 458 err_release:
 459         drm_fb_helper_release_fbi(&fbdev->psb_fb_helper);
 460 err_free_range:
 461         psb_gtt_free_range(dev, backing);
 462         return ret;
 463 }
 464
 465 /**
 466  *      psb_user_framebuffer_create     -       create framebuffer
 467  *      @dev: our DRM device
 468  *      @filp: client file
 469  *      @cmd: mode request
 470  *
 471  *      Create a new framebuffer backed by a userspace GEM object
 472  */
 473 static struct drm_framebuffer *psb_user_framebuffer_create
 474                         (struct drm_device *dev, struct drm_file *filp,
 475                          const struct drm_mode_fb_cmd2 *cmd)
 476 {
 477         struct gtt_range *r;
 478         struct drm_gem_object *obj;
 479
 480         /*
 481          *      Find the GEM object and thus the gtt range object that is
 482          *      to back this space
 483          */
 484         obj = drm_gem_object_lookup(filp, cmd->handles[0]);
 485         if (obj == NULL)
 486                 return ERR_PTR(-ENOENT);
 487
 488         /* Let the core code do all the work */
 489         r = container_of(obj, struct gtt_range, gem);
 490         return psb_framebuffer_create(dev, cmd, r);
 491 }
 492
 493 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 494                                                         u16 blue, int regno)
 495 {
 496         struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
 497
 498         gma_crtc->lut_r[regno] = red >> 8;
 499         gma_crtc->lut_g[regno] = green >> 8;
 500         gma_crtc->lut_b[regno] = blue >> 8;
 501 }
 502
 503 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
 504                                         u16 *green, u16 *blue, int regno)
 505 {
 506         struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
 507
 508         *red = gma_crtc->lut_r[regno] << 8;
 509         *green = gma_crtc->lut_g[regno] << 8;
 510         *blue = gma_crtc->lut_b[regno] << 8;
 511 }
 512
 513 static int psbfb_probe(struct drm_fb_helper *helper,
 514                                 struct drm_fb_helper_surface_size *sizes)
 515 {
 516         struct psb_fbdev *psb_fbdev =
 517                 container_of(helper, struct psb_fbdev, psb_fb_helper);
 518         struct drm_device *dev = psb_fbdev->psb_fb_helper.dev;
 519         struct drm_psb_private *dev_priv = dev->dev_private;
 520         int bytespp;
 521
 522         bytespp = sizes->surface_bpp / 8;
 523         if (bytespp == 3)       /* no 24bit packed */
 524                 bytespp = 4;
 525
 526         /* If the mode will not fit in 32bit then switch to 16bit to get
 527            a console on full resolution. The X mode setting server will
 528            allocate its own 32bit GEM framebuffer */
 529         if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height >
 530                         dev_priv->vram_stolen_size) {
 531                 sizes->surface_bpp = 16;
 532                 sizes->surface_depth = 16;
 533         }
 534
 535         return psbfb_create(psb_fbdev, sizes);
 536 }
 537
 538 static const struct drm_fb_helper_funcs psb_fb_helper_funcs = {
 539         .gamma_set = psbfb_gamma_set,
 540         .gamma_get = psbfb_gamma_get,
 541         .fb_probe = psbfb_probe,
 542 };
 543
 544 static int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
 545 {
 546         struct psb_framebuffer *psbfb = &fbdev->pfb;
 547
 548         drm_fb_helper_unregister_fbi(&fbdev->psb_fb_helper);
 549         drm_fb_helper_release_fbi(&fbdev->psb_fb_helper);
 550
 551         drm_fb_helper_fini(&fbdev->psb_fb_helper);
 552         drm_framebuffer_unregister_private(&psbfb->base);
 553         drm_framebuffer_cleanup(&psbfb->base);
 554
 555         if (psbfb->gtt)
 556                 drm_gem_object_unreference_unlocked(&psbfb->gtt->gem);
 557         return 0;
 558 }
 559
 560 int psb_fbdev_init(struct drm_device *dev)
 561 {
 562         struct psb_fbdev *fbdev;
 563         struct drm_psb_private *dev_priv = dev->dev_private;
 564         int ret;
 565
 566         fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
 567         if (!fbdev) {
 568                 dev_err(dev->dev, "no memory\n");
 569                 return -ENOMEM;
 570         }
 571
 572         dev_priv->fbdev = fbdev;
 573
 574         drm_fb_helper_prepare(dev, &fbdev->psb_fb_helper, &psb_fb_helper_funcs);
 575
 576         ret = drm_fb_helper_init(dev, &fbdev->psb_fb_helper,
 577                                  dev_priv->ops->crtcs, INTELFB_CONN_LIMIT);
 578         if (ret)
 579                 goto free;
 580
 581         ret = drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
 582         if (ret)
 583                 goto fini;
 584
 585         /* disable all the possible outputs/crtcs before entering KMS mode */
 586         drm_helper_disable_unused_functions(dev);
 587
 588         ret = drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
 589         if (ret)
 590                 goto fini;
 591
 592         return 0;
 593
 594 fini:
 595         drm_fb_helper_fini(&fbdev->psb_fb_helper);
 596 free:
 597         kfree(fbdev);
 598         return ret;
 599 }
 600
 601 static void psb_fbdev_fini(struct drm_device *dev)
 602 {
 603         struct drm_psb_private *dev_priv = dev->dev_private;
 604
 605         if (!dev_priv->fbdev)
 606                 return;
 607
 608         psb_fbdev_destroy(dev, dev_priv->fbdev);
 609         kfree(dev_priv->fbdev);
 610         dev_priv->fbdev = NULL;
 611 }
 612
 613 static void psbfb_output_poll_changed(struct drm_device *dev)
 614 {
 615         struct drm_psb_private *dev_priv = dev->dev_private;
 616         struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
 617         drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
 618 }
 619
 620 /**
 621  *      psb_user_framebuffer_create_handle - add hamdle to a framebuffer
 622  *      @fb: framebuffer
 623  *      @file_priv: our DRM file
 624  *      @handle: returned handle
 625  *
 626  *      Our framebuffer object is a GTT range which also contains a GEM
 627  *      object. We need to turn it into a handle for userspace. GEM will do
 628  *      the work for us
 629  */
 630 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 631                                               struct drm_file *file_priv,
 632                                               unsigned int *handle)
 633 {
 634         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 635         struct gtt_range *r = psbfb->gtt;
 636         return drm_gem_handle_create(file_priv, &r->gem, handle);
 637 }
 638
 639 /**
 640  *      psb_user_framebuffer_destroy    -       destruct user created fb
 641  *      @fb: framebuffer
 642  *
 643  *      User framebuffers are backed by GEM objects so all we have to do is
 644  *      clean up a bit and drop the reference, GEM will handle the fallout
 645  */
 646 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
 647 {
 648         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 649         struct gtt_range *r = psbfb->gtt;
 650
 651         /* Let DRM do its clean up */
 652         drm_framebuffer_cleanup(fb);
 653         /*  We are no longer using the resource in GEM */
 654         drm_gem_object_unreference_unlocked(&r->gem);
 655         kfree(fb);
 656 }
 657
 658 static const struct drm_mode_config_funcs psb_mode_funcs = {
 659         .fb_create = psb_user_framebuffer_create,
 660         .output_poll_changed = psbfb_output_poll_changed,
 661 };
 662
 663 static void psb_setup_outputs(struct drm_device *dev)
 664 {
 665         struct drm_psb_private *dev_priv = dev->dev_private;
 666         struct drm_connector *connector;
 667
 668         drm_mode_create_scaling_mode_property(dev);
 669
 670         /* It is ok for this to fail - we just don't get backlight control */
 671         if (!dev_priv->backlight_property)
 672                 dev_priv->backlight_property = drm_property_create_range(dev, 0,
 673                                                         "backlight", 0, 100);
 674         dev_priv->ops->output_init(dev);
 675
 676         list_for_each_entry(connector, &dev->mode_config.connector_list,
 677                             head) {
 678                 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
 679                 struct drm_encoder *encoder = &gma_encoder->base;
 680                 int crtc_mask = 0, clone_mask = 0;
 681
 682                 /* valid crtcs */
 683                 switch (gma_encoder->type) {
 684                 case INTEL_OUTPUT_ANALOG:
 685                         crtc_mask = (1 << 0);
 686                         clone_mask = (1 << INTEL_OUTPUT_ANALOG);
 687                         break;
 688                 case INTEL_OUTPUT_SDVO:
 689                         crtc_mask = dev_priv->ops->sdvo_mask;
 690                         clone_mask = (1 << INTEL_OUTPUT_SDVO);
 691                         break;
 692                 case INTEL_OUTPUT_LVDS:
 693                         crtc_mask = dev_priv->ops->lvds_mask;
 694                         clone_mask = (1 << INTEL_OUTPUT_LVDS);
 695                         break;
 696                 case INTEL_OUTPUT_MIPI:
 697                         crtc_mask = (1 << 0);
 698                         clone_mask = (1 << INTEL_OUTPUT_MIPI);
 699                         break;
 700                 case INTEL_OUTPUT_MIPI2:
 701                         crtc_mask = (1 << 2);
 702                         clone_mask = (1 << INTEL_OUTPUT_MIPI2);
 703                         break;
 704                 case INTEL_OUTPUT_HDMI:
 705                         crtc_mask = dev_priv->ops->hdmi_mask;
 706                         clone_mask = (1 << INTEL_OUTPUT_HDMI);
 707                         break;
 708                 case INTEL_OUTPUT_DISPLAYPORT:
 709                         crtc_mask = (1 << 0) | (1 << 1);
 710                         clone_mask = (1 << INTEL_OUTPUT_DISPLAYPORT);
 711                         break;
 712                 case INTEL_OUTPUT_EDP:
 713                         crtc_mask = (1 << 1);
 714                         clone_mask = (1 << INTEL_OUTPUT_EDP);
 715                 }
 716                 encoder->possible_crtcs = crtc_mask;
 717                 encoder->possible_clones =
 718                     gma_connector_clones(dev, clone_mask);
 719         }
 720 }
 721
 722 void psb_modeset_init(struct drm_device *dev)
 723 {
 724         struct drm_psb_private *dev_priv = dev->dev_private;
 725         struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
 726         int i;
 727
 728         drm_mode_config_init(dev);
 729
 730         dev->mode_config.min_width = 0;
 731         dev->mode_config.min_height = 0;
 732
 733         dev->mode_config.funcs = &psb_mode_funcs;
 734
 735         /* set memory base */
 736         /* Oaktrail and Poulsbo should use BAR 2*/
 737         pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
 738                                         &(dev->mode_config.fb_base));
 739
 740         /* num pipes is 2 for PSB but 1 for Mrst */
 741         for (i = 0; i < dev_priv->num_pipe; i++)
 742                 psb_intel_crtc_init(dev, i, mode_dev);
 743
 744         dev->mode_config.max_width = 4096;
 745         dev->mode_config.max_height = 4096;
 746
 747         psb_setup_outputs(dev);
 748
 749         if (dev_priv->ops->errata)
 750                 dev_priv->ops->errata(dev);
 751
 752         dev_priv->modeset = true;
 753 }
 754
 755 void psb_modeset_cleanup(struct drm_device *dev)
 756 {
 757         struct drm_psb_private *dev_priv = dev->dev_private;
 758         if (dev_priv->modeset) {
 759                 drm_kms_helper_poll_fini(dev);
 760                 psb_fbdev_fini(dev);
 761                 drm_mode_config_cleanup(dev);
 762         }
 763 }