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 int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
 188                                                 unsigned long arg)
 189 {
 190         return -ENOTTY;
 191 }
 192
 193 static struct fb_ops psbfb_ops = {
 194         .owner = THIS_MODULE,
 195         .fb_check_var = drm_fb_helper_check_var,
 196         .fb_set_par = drm_fb_helper_set_par,
 197         .fb_blank = drm_fb_helper_blank,
 198         .fb_setcolreg = psbfb_setcolreg,
 199         .fb_fillrect = drm_fb_helper_cfb_fillrect,
 200         .fb_copyarea = psbfb_copyarea,
 201         .fb_imageblit = drm_fb_helper_cfb_imageblit,
 202         .fb_mmap = psbfb_mmap,
 203         .fb_sync = psbfb_sync,
 204         .fb_ioctl = psbfb_ioctl,
 205 };
 206
 207 static struct fb_ops psbfb_roll_ops = {
 208         .owner = THIS_MODULE,
 209         .fb_check_var = drm_fb_helper_check_var,
 210         .fb_set_par = drm_fb_helper_set_par,
 211         .fb_blank = drm_fb_helper_blank,
 212         .fb_setcolreg = psbfb_setcolreg,
 213         .fb_fillrect = drm_fb_helper_cfb_fillrect,
 214         .fb_copyarea = drm_fb_helper_cfb_copyarea,
 215         .fb_imageblit = drm_fb_helper_cfb_imageblit,
 216         .fb_pan_display = psbfb_pan,
 217         .fb_mmap = psbfb_mmap,
 218         .fb_ioctl = psbfb_ioctl,
 219 };
 220
 221 static struct fb_ops psbfb_unaccel_ops = {
 222         .owner = THIS_MODULE,
 223         .fb_check_var = drm_fb_helper_check_var,
 224         .fb_set_par = drm_fb_helper_set_par,
 225         .fb_blank = drm_fb_helper_blank,
 226         .fb_setcolreg = psbfb_setcolreg,
 227         .fb_fillrect = drm_fb_helper_cfb_fillrect,
 228         .fb_copyarea = drm_fb_helper_cfb_copyarea,
 229         .fb_imageblit = drm_fb_helper_cfb_imageblit,
 230         .fb_mmap = psbfb_mmap,
 231         .fb_ioctl = psbfb_ioctl,
 232 };
 233
 234 /**
 235  *      psb_framebuffer_init    -       initialize a framebuffer
 236  *      @dev: our DRM device
 237  *      @fb: framebuffer to set up
 238  *      @mode_cmd: mode description
 239  *      @gt: backing object
 240  *
 241  *      Configure and fill in the boilerplate for our frame buffer. Return
 242  *      0 on success or an error code if we fail.
 243  */
 244 static int psb_framebuffer_init(struct drm_device *dev,
 245                                         struct psb_framebuffer *fb,
 246                                         const struct drm_mode_fb_cmd2 *mode_cmd,
 247                                         struct gtt_range *gt)
 248 {
 249         u32 bpp, depth;
 250         int ret;
 251
 252         drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
 253
 254         if (mode_cmd->pitches[0] & 63)
 255                 return -EINVAL;
 256         switch (bpp) {
 257         case 8:
 258         case 16:
 259         case 24:
 260         case 32:
 261                 break;
 262         default:
 263                 return -EINVAL;
 264         }
 265         drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
 266         fb->gtt = gt;
 267         ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
 268         if (ret) {
 269                 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
 270                 return ret;
 271         }
 272         return 0;
 273 }
 274
 275 /**
 276  *      psb_framebuffer_create  -       create a framebuffer backed by gt
 277  *      @dev: our DRM device
 278  *      @mode_cmd: the description of the requested mode
 279  *      @gt: the backing object
 280  *
 281  *      Create a framebuffer object backed by the gt, and fill in the
 282  *      boilerplate required
 283  *
 284  *      TODO: review object references
 285  */
 286
 287 static struct drm_framebuffer *psb_framebuffer_create
 288                         (struct drm_device *dev,
 289                          const struct drm_mode_fb_cmd2 *mode_cmd,
 290                          struct gtt_range *gt)
 291 {
 292         struct psb_framebuffer *fb;
 293         int ret;
 294
 295         fb = kzalloc(sizeof(*fb), GFP_KERNEL);
 296         if (!fb)
 297                 return ERR_PTR(-ENOMEM);
 298
 299         ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
 300         if (ret) {
 301                 kfree(fb);
 302                 return ERR_PTR(ret);
 303         }
 304         return &fb->base;
 305 }
 306
 307 /**
 308  *      psbfb_alloc             -       allocate frame buffer memory
 309  *      @dev: the DRM device
 310  *      @aligned_size: space needed
 311  *      @force: fall back to GEM buffers if need be
 312  *
 313  *      Allocate the frame buffer. In the usual case we get a GTT range that
 314  *      is stolen memory backed and life is simple. If there isn't sufficient
 315  *      we fail as we don't have the virtual mapping space to really vmap it
 316  *      and the kernel console code can't handle non linear framebuffers.
 317  *
 318  *      Re-address this as and if the framebuffer layer grows this ability.
 319  */
 320 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
 321 {
 322         struct gtt_range *backing;
 323         /* Begin by trying to use stolen memory backing */
 324         backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1, PAGE_SIZE);
 325         if (backing) {
 326                 drm_gem_private_object_init(dev, &backing->gem, aligned_size);
 327                 return backing;
 328         }
 329         return NULL;
 330 }
 331
 332 /**
 333  *      psbfb_create            -       create a framebuffer
 334  *      @fbdev: the framebuffer device
 335  *      @sizes: specification of the layout
 336  *
 337  *      Create a framebuffer to the specifications provided
 338  */
 339 static int psbfb_create(struct psb_fbdev *fbdev,
 340                                 struct drm_fb_helper_surface_size *sizes)
 341 {
 342         struct drm_device *dev = fbdev->psb_fb_helper.dev;
 343         struct drm_psb_private *dev_priv = dev->dev_private;
 344         struct fb_info *info;
 345         struct drm_framebuffer *fb;
 346         struct psb_framebuffer *psbfb = &fbdev->pfb;
 347         struct drm_mode_fb_cmd2 mode_cmd;
 348         int size;
 349         int ret;
 350         struct gtt_range *backing;
 351         u32 bpp, depth;
 352         int gtt_roll = 0;
 353         int pitch_lines = 0;
 354
 355         mode_cmd.width = sizes->surface_width;
 356         mode_cmd.height = sizes->surface_height;
 357         bpp = sizes->surface_bpp;
 358         depth = sizes->surface_depth;
 359
 360         /* No 24bit packed */
 361         if (bpp == 24)
 362                 bpp = 32;
 363
 364         do {
 365                 /*
 366                  * Acceleration via the GTT requires pitch to be
 367                  * power of two aligned. Preferably page but less
 368                  * is ok with some fonts
 369                  */
 370                 mode_cmd.pitches[0] =  ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines);
 371
 372                 size = mode_cmd.pitches[0] * mode_cmd.height;
 373                 size = ALIGN(size, PAGE_SIZE);
 374
 375                 /* Allocate the fb in the GTT with stolen page backing */
 376                 backing = psbfb_alloc(dev, size);
 377
 378                 if (pitch_lines)
 379                         pitch_lines *= 2;
 380                 else
 381                         pitch_lines = 1;
 382                 gtt_roll++;
 383         } while (backing == NULL && pitch_lines <= 16);
 384
 385         /* The final pitch we accepted if we succeeded */
 386         pitch_lines /= 2;
 387
 388         if (backing == NULL) {
 389                 /*
 390                  *      We couldn't get the space we wanted, fall back to the
 391                  *      display engine requirement instead.  The HW requires
 392                  *      the pitch to be 64 byte aligned
 393                  */
 394
 395                 gtt_roll = 0;   /* Don't use GTT accelerated scrolling */
 396                 pitch_lines = 64;
 397
 398                 mode_cmd.pitches[0] =  ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64);
 399
 400                 size = mode_cmd.pitches[0] * mode_cmd.height;
 401                 size = ALIGN(size, PAGE_SIZE);
 402
 403                 /* Allocate the framebuffer in the GTT with stolen page backing */
 404                 backing = psbfb_alloc(dev, size);
 405                 if (backing == NULL)
 406                         return -ENOMEM;
 407         }
 408
 409         memset(dev_priv->vram_addr + backing->offset, 0, size);
 410
 411         info = drm_fb_helper_alloc_fbi(&fbdev->psb_fb_helper);
 412         if (IS_ERR(info)) {
 413                 ret = PTR_ERR(info);
 414                 goto out_err1;
 415         }
 416         info->par = fbdev;
 417
 418         mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
 419
 420         ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
 421         if (ret)
 422                 goto out_unref;
 423
 424         fb = &psbfb->base;
 425         psbfb->fbdev = info;
 426
 427         fbdev->psb_fb_helper.fb = fb;
 428
 429         drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
 430         strcpy(info->fix.id, "psbdrmfb");
 431
 432         info->flags = FBINFO_DEFAULT;
 433         if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */
 434                 info->fbops = &psbfb_ops;
 435         else if (gtt_roll) {    /* GTT rolling seems best */
 436                 info->fbops = &psbfb_roll_ops;
 437                 info->flags |= FBINFO_HWACCEL_YPAN;
 438         } else  /* Software */
 439                 info->fbops = &psbfb_unaccel_ops;
 440
 441         info->fix.smem_start = dev->mode_config.fb_base;
 442         info->fix.smem_len = size;
 443         info->fix.ywrapstep = gtt_roll;
 444         info->fix.ypanstep = 0;
 445
 446         /* Accessed stolen memory directly */
 447         info->screen_base = dev_priv->vram_addr + backing->offset;
 448         info->screen_size = size;
 449
 450         if (dev_priv->gtt.stolen_size) {
 451                 info->apertures->ranges[0].base = dev->mode_config.fb_base;
 452                 info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
 453         }
 454
 455         drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
 456                                 sizes->fb_width, sizes->fb_height);
 457
 458         info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
 459         info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
 460
 461         /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 462
 463         dev_dbg(dev->dev, "allocated %dx%d fb\n",
 464                                         psbfb->base.width, psbfb->base.height);
 465
 466         return 0;
 467 out_unref:
 468         if (backing->stolen)
 469                 psb_gtt_free_range(dev, backing);
 470         else
 471                 drm_gem_object_unreference_unlocked(&backing->gem);
 472
 473         drm_fb_helper_release_fbi(&fbdev->psb_fb_helper);
 474 out_err1:
 475         psb_gtt_free_range(dev, backing);
 476         return ret;
 477 }
 478
 479 /**
 480  *      psb_user_framebuffer_create     -       create framebuffer
 481  *      @dev: our DRM device
 482  *      @filp: client file
 483  *      @cmd: mode request
 484  *
 485  *      Create a new framebuffer backed by a userspace GEM object
 486  */
 487 static struct drm_framebuffer *psb_user_framebuffer_create
 488                         (struct drm_device *dev, struct drm_file *filp,
 489                          const struct drm_mode_fb_cmd2 *cmd)
 490 {
 491         struct gtt_range *r;
 492         struct drm_gem_object *obj;
 493
 494         /*
 495          *      Find the GEM object and thus the gtt range object that is
 496          *      to back this space
 497          */
 498         obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]);
 499         if (obj == NULL)
 500                 return ERR_PTR(-ENOENT);
 501
 502         /* Let the core code do all the work */
 503         r = container_of(obj, struct gtt_range, gem);
 504         return psb_framebuffer_create(dev, cmd, r);
 505 }
 506
 507 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 508                                                         u16 blue, int regno)
 509 {
 510         struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
 511
 512         gma_crtc->lut_r[regno] = red >> 8;
 513         gma_crtc->lut_g[regno] = green >> 8;
 514         gma_crtc->lut_b[regno] = blue >> 8;
 515 }
 516
 517 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
 518                                         u16 *green, u16 *blue, int regno)
 519 {
 520         struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
 521
 522         *red = gma_crtc->lut_r[regno] << 8;
 523         *green = gma_crtc->lut_g[regno] << 8;
 524         *blue = gma_crtc->lut_b[regno] << 8;
 525 }
 526
 527 static int psbfb_probe(struct drm_fb_helper *helper,
 528                                 struct drm_fb_helper_surface_size *sizes)
 529 {
 530         struct psb_fbdev *psb_fbdev =
 531                 container_of(helper, struct psb_fbdev, psb_fb_helper);
 532         struct drm_device *dev = psb_fbdev->psb_fb_helper.dev;
 533         struct drm_psb_private *dev_priv = dev->dev_private;
 534         int bytespp;
 535
 536         bytespp = sizes->surface_bpp / 8;
 537         if (bytespp == 3)       /* no 24bit packed */
 538                 bytespp = 4;
 539
 540         /* If the mode will not fit in 32bit then switch to 16bit to get
 541            a console on full resolution. The X mode setting server will
 542            allocate its own 32bit GEM framebuffer */
 543         if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height >
 544                         dev_priv->vram_stolen_size) {
 545                 sizes->surface_bpp = 16;
 546                 sizes->surface_depth = 16;
 547         }
 548
 549         return psbfb_create(psb_fbdev, sizes);
 550 }
 551
 552 static const struct drm_fb_helper_funcs psb_fb_helper_funcs = {
 553         .gamma_set = psbfb_gamma_set,
 554         .gamma_get = psbfb_gamma_get,
 555         .fb_probe = psbfb_probe,
 556 };
 557
 558 static int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
 559 {
 560         struct psb_framebuffer *psbfb = &fbdev->pfb;
 561
 562         drm_fb_helper_unregister_fbi(&fbdev->psb_fb_helper);
 563         drm_fb_helper_release_fbi(&fbdev->psb_fb_helper);
 564
 565         drm_fb_helper_fini(&fbdev->psb_fb_helper);
 566         drm_framebuffer_unregister_private(&psbfb->base);
 567         drm_framebuffer_cleanup(&psbfb->base);
 568
 569         if (psbfb->gtt)
 570                 drm_gem_object_unreference_unlocked(&psbfb->gtt->gem);
 571         return 0;
 572 }
 573
 574 int psb_fbdev_init(struct drm_device *dev)
 575 {
 576         struct psb_fbdev *fbdev;
 577         struct drm_psb_private *dev_priv = dev->dev_private;
 578         int ret;
 579
 580         fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
 581         if (!fbdev) {
 582                 dev_err(dev->dev, "no memory\n");
 583                 return -ENOMEM;
 584         }
 585
 586         dev_priv->fbdev = fbdev;
 587
 588         drm_fb_helper_prepare(dev, &fbdev->psb_fb_helper, &psb_fb_helper_funcs);
 589
 590         ret = drm_fb_helper_init(dev, &fbdev->psb_fb_helper,
 591                                  dev_priv->ops->crtcs, INTELFB_CONN_LIMIT);
 592         if (ret)
 593                 goto free;
 594
 595         ret = drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
 596         if (ret)
 597                 goto fini;
 598
 599         /* disable all the possible outputs/crtcs before entering KMS mode */
 600         drm_helper_disable_unused_functions(dev);
 601
 602         ret = drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
 603         if (ret)
 604                 goto fini;
 605
 606         return 0;
 607
 608 fini:
 609         drm_fb_helper_fini(&fbdev->psb_fb_helper);
 610 free:
 611         kfree(fbdev);
 612         return ret;
 613 }
 614
 615 static void psb_fbdev_fini(struct drm_device *dev)
 616 {
 617         struct drm_psb_private *dev_priv = dev->dev_private;
 618
 619         if (!dev_priv->fbdev)
 620                 return;
 621
 622         psb_fbdev_destroy(dev, dev_priv->fbdev);
 623         kfree(dev_priv->fbdev);
 624         dev_priv->fbdev = NULL;
 625 }
 626
 627 static void psbfb_output_poll_changed(struct drm_device *dev)
 628 {
 629         struct drm_psb_private *dev_priv = dev->dev_private;
 630         struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
 631         drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
 632 }
 633
 634 /**
 635  *      psb_user_framebuffer_create_handle - add hamdle to a framebuffer
 636  *      @fb: framebuffer
 637  *      @file_priv: our DRM file
 638  *      @handle: returned handle
 639  *
 640  *      Our framebuffer object is a GTT range which also contains a GEM
 641  *      object. We need to turn it into a handle for userspace. GEM will do
 642  *      the work for us
 643  */
 644 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 645                                               struct drm_file *file_priv,
 646                                               unsigned int *handle)
 647 {
 648         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 649         struct gtt_range *r = psbfb->gtt;
 650         return drm_gem_handle_create(file_priv, &r->gem, handle);
 651 }
 652
 653 /**
 654  *      psb_user_framebuffer_destroy    -       destruct user created fb
 655  *      @fb: framebuffer
 656  *
 657  *      User framebuffers are backed by GEM objects so all we have to do is
 658  *      clean up a bit and drop the reference, GEM will handle the fallout
 659  */
 660 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
 661 {
 662         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 663         struct gtt_range *r = psbfb->gtt;
 664
 665         /* Let DRM do its clean up */
 666         drm_framebuffer_cleanup(fb);
 667         /*  We are no longer using the resource in GEM */
 668         drm_gem_object_unreference_unlocked(&r->gem);
 669         kfree(fb);
 670 }
 671
 672 static const struct drm_mode_config_funcs psb_mode_funcs = {
 673         .fb_create = psb_user_framebuffer_create,
 674         .output_poll_changed = psbfb_output_poll_changed,
 675 };
 676
 677 static int psb_create_backlight_property(struct drm_device *dev)
 678 {
 679         struct drm_psb_private *dev_priv = dev->dev_private;
 680         struct drm_property *backlight;
 681
 682         if (dev_priv->backlight_property)
 683                 return 0;
 684
 685         backlight = drm_property_create_range(dev, 0, "backlight", 0, 100);
 686
 687         dev_priv->backlight_property = backlight;
 688
 689         return 0;
 690 }
 691
 692 static void psb_setup_outputs(struct drm_device *dev)
 693 {
 694         struct drm_psb_private *dev_priv = dev->dev_private;
 695         struct drm_connector *connector;
 696
 697         drm_mode_create_scaling_mode_property(dev);
 698         psb_create_backlight_property(dev);
 699
 700         dev_priv->ops->output_init(dev);
 701
 702         list_for_each_entry(connector, &dev->mode_config.connector_list,
 703                             head) {
 704                 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
 705                 struct drm_encoder *encoder = &gma_encoder->base;
 706                 int crtc_mask = 0, clone_mask = 0;
 707
 708                 /* valid crtcs */
 709                 switch (gma_encoder->type) {
 710                 case INTEL_OUTPUT_ANALOG:
 711                         crtc_mask = (1 << 0);
 712                         clone_mask = (1 << INTEL_OUTPUT_ANALOG);
 713                         break;
 714                 case INTEL_OUTPUT_SDVO:
 715                         crtc_mask = dev_priv->ops->sdvo_mask;
 716                         clone_mask = (1 << INTEL_OUTPUT_SDVO);
 717                         break;
 718                 case INTEL_OUTPUT_LVDS:
 719                         crtc_mask = dev_priv->ops->lvds_mask;
 720                         clone_mask = (1 << INTEL_OUTPUT_LVDS);
 721                         break;
 722                 case INTEL_OUTPUT_MIPI:
 723                         crtc_mask = (1 << 0);
 724                         clone_mask = (1 << INTEL_OUTPUT_MIPI);
 725                         break;
 726                 case INTEL_OUTPUT_MIPI2:
 727                         crtc_mask = (1 << 2);
 728                         clone_mask = (1 << INTEL_OUTPUT_MIPI2);
 729                         break;
 730                 case INTEL_OUTPUT_HDMI:
 731                         crtc_mask = dev_priv->ops->hdmi_mask;
 732                         clone_mask = (1 << INTEL_OUTPUT_HDMI);
 733                         break;
 734                 case INTEL_OUTPUT_DISPLAYPORT:
 735                         crtc_mask = (1 << 0) | (1 << 1);
 736                         clone_mask = (1 << INTEL_OUTPUT_DISPLAYPORT);
 737                         break;
 738                 case INTEL_OUTPUT_EDP:
 739                         crtc_mask = (1 << 1);
 740                         clone_mask = (1 << INTEL_OUTPUT_EDP);
 741                 }
 742                 encoder->possible_crtcs = crtc_mask;
 743                 encoder->possible_clones =
 744                     gma_connector_clones(dev, clone_mask);
 745         }
 746 }
 747
 748 void psb_modeset_init(struct drm_device *dev)
 749 {
 750         struct drm_psb_private *dev_priv = dev->dev_private;
 751         struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
 752         int i;
 753
 754         drm_mode_config_init(dev);
 755
 756         dev->mode_config.min_width = 0;
 757         dev->mode_config.min_height = 0;
 758
 759         dev->mode_config.funcs = &psb_mode_funcs;
 760
 761         /* set memory base */
 762         /* Oaktrail and Poulsbo should use BAR 2*/
 763         pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
 764                                         &(dev->mode_config.fb_base));
 765
 766         /* num pipes is 2 for PSB but 1 for Mrst */
 767         for (i = 0; i < dev_priv->num_pipe; i++)
 768                 psb_intel_crtc_init(dev, i, mode_dev);
 769
 770         dev->mode_config.max_width = 4096;
 771         dev->mode_config.max_height = 4096;
 772
 773         psb_setup_outputs(dev);
 774
 775         if (dev_priv->ops->errata)
 776                 dev_priv->ops->errata(dev);
 777
 778         dev_priv->modeset = true;
 779 }
 780
 781 void psb_modeset_cleanup(struct drm_device *dev)
 782 {
 783         struct drm_psb_private *dev_priv = dev->dev_private;
 784         if (dev_priv->modeset) {
 785                 drm_kms_helper_poll_fini(dev);
 786                 psb_fbdev_fini(dev);
 787                 drm_mode_config_cleanup(dev);
 788         }
 789 }