drivers/staging/gma500/psb_fb.c

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