drivers/staging/gma500/psb_fb.c

   1 /**************************************************************************
   2  * Copyright (c) 2007, 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 /*EXPORT_SYMBOL(psbfb_vdc_reg); */
  60
  61 static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
  62                            unsigned blue, unsigned transp,
  63                            struct fb_info *info)
  64 {
  65         struct psb_fbdev *fbdev = info->par;
  66         struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
  67         uint32_t v;
  68
  69         if (!fb)
  70                 return -ENOMEM;
  71
  72         if (regno > 255)
  73                 return 1;
  74
  75         red = CMAP_TOHW(red, info->var.red.length);
  76         blue = CMAP_TOHW(blue, info->var.blue.length);
  77         green = CMAP_TOHW(green, info->var.green.length);
  78         transp = CMAP_TOHW(transp, info->var.transp.length);
  79
  80         v = (red << info->var.red.offset) |
  81             (green << info->var.green.offset) |
  82             (blue << info->var.blue.offset) |
  83             (transp << info->var.transp.offset);
  84
  85         if (regno < 16) {
  86                 switch (fb->bits_per_pixel) {
  87                 case 16:
  88                         ((uint32_t *) info->pseudo_palette)[regno] = v;
  89                         break;
  90                 case 24:
  91                 case 32:
  92                         ((uint32_t *) info->pseudo_palette)[regno] = v;
  93                         break;
  94                 }
  95         }
  96
  97         return 0;
  98 }
  99
 100 static int psbfb_kms_off(struct drm_device *dev, int suspend)
 101 {
 102         struct drm_framebuffer *fb = 0;
 103         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 104         DRM_DEBUG("psbfb_kms_off_ioctl\n");
 105
 106         mutex_lock(&dev->mode_config.mutex);
 107         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 108                 struct fb_info *info = psbfb->fbdev;
 109
 110                 if (suspend) {
 111                         fb_set_suspend(info, 1);
 112                         drm_fb_helper_blank(FB_BLANK_POWERDOWN, info);
 113                 }
 114         }
 115         mutex_unlock(&dev->mode_config.mutex);
 116         return 0;
 117 }
 118
 119 int psbfb_kms_off_ioctl(struct drm_device *dev, void *data,
 120                         struct drm_file *file_priv)
 121 {
 122         int ret;
 123
 124         if (drm_psb_no_fb)
 125                 return 0;
 126         console_lock();
 127         ret = psbfb_kms_off(dev, 0);
 128         console_unlock();
 129
 130         return ret;
 131 }
 132
 133 static int psbfb_kms_on(struct drm_device *dev, int resume)
 134 {
 135         struct drm_framebuffer *fb = 0;
 136         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 137
 138         DRM_DEBUG("psbfb_kms_on_ioctl\n");
 139
 140         mutex_lock(&dev->mode_config.mutex);
 141         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 142                 struct fb_info *info = psbfb->fbdev;
 143
 144                 if (resume) {
 145                         fb_set_suspend(info, 0);
 146                         drm_fb_helper_blank(FB_BLANK_UNBLANK, info);
 147                 }
 148         }
 149         mutex_unlock(&dev->mode_config.mutex);
 150
 151         return 0;
 152 }
 153
 154 int psbfb_kms_on_ioctl(struct drm_device *dev, void *data,
 155                        struct drm_file *file_priv)
 156 {
 157         int ret;
 158
 159         if (drm_psb_no_fb)
 160                 return 0;
 161         console_lock();
 162         ret = psbfb_kms_on(dev, 0);
 163         console_unlock();
 164         drm_helper_disable_unused_functions(dev);
 165         return ret;
 166 }
 167
 168 void psbfb_suspend(struct drm_device *dev)
 169 {
 170         console_lock();
 171         psbfb_kms_off(dev, 1);
 172         console_unlock();
 173 }
 174
 175 void psbfb_resume(struct drm_device *dev)
 176 {
 177         console_lock();
 178         psbfb_kms_on(dev, 1);
 179         console_unlock();
 180         drm_helper_disable_unused_functions(dev);
 181 }
 182
 183 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 184 {
 185         int page_num = 0;
 186         int i;
 187         unsigned long address = 0;
 188         int ret;
 189         unsigned long pfn;
 190         struct psb_framebuffer *psbfb = vma->vm_private_data;
 191         struct drm_device *dev = psbfb->base.dev;
 192         struct drm_psb_private *dev_priv = dev->dev_private;
 193         unsigned long phys_addr = (unsigned long)dev_priv->stolen_base;
 194
 195         page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
 196
 197         address = (unsigned long)vmf->virtual_address;
 198
 199         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 200
 201         for (i = 0; i < page_num; i++) {
 202                 pfn = (phys_addr >> PAGE_SHIFT); /* phys_to_pfn(phys_addr); */
 203
 204                 ret = vm_insert_mixed(vma, address, pfn);
 205                 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
 206                         break;
 207                 else if (unlikely(ret != 0)) {
 208                         ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
 209                         return ret;
 210                 }
 211
 212                 address += PAGE_SIZE;
 213                 phys_addr += PAGE_SIZE;
 214         }
 215
 216         return VM_FAULT_NOPAGE;
 217 }
 218
 219 static void psbfb_vm_open(struct vm_area_struct *vma)
 220 {
 221         DRM_DEBUG("vm_open\n");
 222 }
 223
 224 static void psbfb_vm_close(struct vm_area_struct *vma)
 225 {
 226         DRM_DEBUG("vm_close\n");
 227 }
 228
 229 static struct vm_operations_struct psbfb_vm_ops = {
 230         .fault  = psbfb_vm_fault,
 231         .open   = psbfb_vm_open,
 232         .close  = psbfb_vm_close
 233 };
 234
 235 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 236 {
 237         struct psb_fbdev *fbdev = info->par;
 238         struct psb_framebuffer *psbfb = fbdev->pfb;
 239         char *fb_screen_base = NULL;
 240         struct drm_device *dev = psbfb->base.dev;
 241         struct drm_psb_private *dev_priv = dev->dev_private;
 242
 243         if (vma->vm_pgoff != 0)
 244                 return -EINVAL;
 245         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
 246                 return -EINVAL;
 247
 248         if (!psbfb->addr_space)
 249                 psbfb->addr_space = vma->vm_file->f_mapping;
 250
 251         fb_screen_base = (char *)info->screen_base;
 252
 253         DRM_DEBUG("vm_pgoff 0x%lx, screen base %p vram_addr %p\n",
 254                                 vma->vm_pgoff, fb_screen_base,
 255                                 dev_priv->vram_addr);
 256
 257         /* FIXME: ultimately this needs to become 'if entirely stolen memory' */
 258         if (1 || fb_screen_base == dev_priv->vram_addr) {
 259                 vma->vm_ops = &psbfb_vm_ops;
 260                 vma->vm_private_data = (void *)psbfb;
 261                 vma->vm_flags |= VM_RESERVED | VM_IO |
 262                                                 VM_MIXEDMAP | VM_DONTEXPAND;
 263         } else {
 264                 /* GTT memory backed by kernel/user pages, needs a different
 265                    approach ? - GEM ? */
 266         }
 267
 268         return 0;
 269 }
 270
 271 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 272 {
 273         struct psb_fbdev *fbdev = info->par;
 274         struct psb_framebuffer *psbfb = fbdev->pfb;
 275         struct drm_device *dev = psbfb->base.dev;
 276         struct drm_psb_private *dev_priv = dev->dev_private;
 277         u32 __user *p = (u32 __user *)arg;
 278         u32 l;
 279         u32 buf[32];
 280         switch (cmd) {
 281         case 0x12345678:
 282                 if (!capable(CAP_SYS_RAWIO))
 283                         return -EPERM;
 284                 if (get_user(l, p))
 285                         return -EFAULT;
 286                 if (l > 32)
 287                         return -EMSGSIZE;
 288                 if (copy_from_user(buf, p + 1, l * sizeof(u32)))
 289                         return -EFAULT;
 290                 psbfb_2d_submit(dev_priv, buf, l);
 291                 return 0;
 292         default:
 293                 return -ENOTTY;
 294         }
 295 }
 296
 297 static struct fb_ops psbfb_ops = {
 298         .owner = THIS_MODULE,
 299         .fb_check_var = drm_fb_helper_check_var,
 300         .fb_set_par = drm_fb_helper_set_par,
 301         .fb_blank = drm_fb_helper_blank,
 302         .fb_setcolreg = psbfb_setcolreg,
 303         .fb_fillrect = psbfb_fillrect,
 304         .fb_copyarea = psbfb_copyarea,
 305         .fb_imageblit = psbfb_imageblit,
 306         .fb_mmap = psbfb_mmap,
 307         .fb_sync = psbfb_sync,
 308         .fb_ioctl = psbfb_ioctl,
 309 };
 310
 311 static struct drm_framebuffer *psb_framebuffer_create
 312                         (struct drm_device *dev, struct drm_mode_fb_cmd *r,
 313                          struct gtt_range *gt)
 314 {
 315         struct psb_framebuffer *fb;
 316         int ret;
 317
 318         fb = kzalloc(sizeof(*fb), GFP_KERNEL);
 319         if (!fb)
 320                 return NULL;
 321
 322         ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
 323
 324         if (ret)
 325                 goto err;
 326
 327         drm_helper_mode_fill_fb_struct(&fb->base, r);
 328
 329         fb->gtt = gt;
 330
 331         return &fb->base;
 332
 333 err:
 334         kfree(fb);
 335         return NULL;
 336 }
 337
 338 /**
 339  *      psbfb_alloc             -       allocate frame buffer memory
 340  *      @dev: the DRM device
 341  *      @aligned_size: space needed
 342  *
 343  *      Allocate the frame buffer. In the usual case we get a GTT range that
 344  *      is stolen memory backed and life is simple. If there isn't sufficient
 345  *      stolen memory or the system has no stolen memory we allocate a range
 346  *      and back it with a GEM object.
 347  *
 348  *      In this case the GEM object has no handle.
 349  */
 350 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
 351 {
 352         struct gtt_range *backing;
 353         /* Begin by trying to use stolen memory backing */
 354         backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
 355         if (backing)
 356                 return backing;
 357         /* Next try using GEM host memory */
 358         backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0);
 359         if (backing == NULL)
 360                 return NULL;
 361
 362         /* Now back it with an object */
 363         if (drm_gem_object_init(dev, &backing->gem, aligned_size) != 0) {
 364                 psb_gtt_free_range(dev, backing);
 365                 return NULL;
 366         }
 367         return backing;
 368 }
 369
 370 /**
 371  *      psbfb_create            -       create a framebuffer
 372  *      @fbdev: the framebuffer device
 373  *      @sizes: specification of the layout
 374  *
 375  *      Create a framebuffer to the specifications provided
 376  */
 377 static int psbfb_create(struct psb_fbdev *fbdev,
 378                                 struct drm_fb_helper_surface_size *sizes)
 379 {
 380         struct drm_device *dev = fbdev->psb_fb_helper.dev;
 381         struct drm_psb_private *dev_priv = dev->dev_private;
 382         struct fb_info *info;
 383         struct drm_framebuffer *fb;
 384         struct psb_framebuffer *psbfb;
 385         struct drm_mode_fb_cmd mode_cmd;
 386         struct device *device = &dev->pdev->dev;
 387         int size, aligned_size;
 388         int ret;
 389         struct gtt_range *backing;
 390
 391         mode_cmd.width = sizes->surface_width;
 392         mode_cmd.height = sizes->surface_height;
 393
 394         mode_cmd.bpp = 32;
 395         /* HW requires pitch to be 64 byte aligned */
 396         mode_cmd.pitch =  ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
 397         mode_cmd.depth = 24;
 398
 399         size = mode_cmd.pitch * mode_cmd.height;
 400         aligned_size = ALIGN(size, PAGE_SIZE);
 401
 402         /* Allocate the framebuffer in the GTT with stolen page backing */
 403         backing = psbfb_alloc(dev, aligned_size);
 404         if (backing == NULL)
 405                 return -ENOMEM;
 406
 407         mutex_lock(&dev->struct_mutex);
 408         fb = psb_framebuffer_create(dev, &mode_cmd, backing);
 409         if (!fb) {
 410                 DRM_ERROR("failed to allocate fb.\n");
 411                 ret = -ENOMEM;
 412                 goto out_err1;
 413         }
 414         psbfb = to_psb_fb(fb);
 415
 416         info = framebuffer_alloc(sizeof(struct psb_fbdev), device);
 417         if (!info) {
 418                 ret = -ENOMEM;
 419                 goto out_err0;
 420         }
 421
 422         info->par = fbdev;
 423
 424         psbfb->fbdev = info;
 425
 426         fbdev->psb_fb_helper.fb = fb;
 427         fbdev->psb_fb_helper.fbdev = info;
 428         fbdev->pfb = psbfb;
 429
 430         strcpy(info->fix.id, "psbfb");
 431
 432         info->flags = FBINFO_DEFAULT;
 433         info->fbops = &psbfb_ops;
 434         info->fix.smem_start = dev->mode_config.fb_base;
 435         info->fix.smem_len = size;
 436
 437         /* Accessed via stolen memory directly, This only works for stolem
 438            memory however. Need to address this once we start using gtt
 439            pages we allocate */
 440         info->screen_base = (char *)dev_priv->vram_addr + backing->offset;
 441         info->screen_size = size;
 442         memset(info->screen_base, 0, size);
 443
 444         drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 445         drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
 446                                 sizes->fb_width, sizes->fb_height);
 447
 448         info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
 449         info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
 450
 451         info->pixmap.size = 64 * 1024;
 452         info->pixmap.buf_align = 8;
 453         info->pixmap.access_align = 32;
 454         info->pixmap.flags = FB_PIXMAP_SYSTEM;
 455         info->pixmap.scan_align = 1;
 456
 457         DRM_DEBUG("fb depth is %d\n", fb->depth);
 458         DRM_DEBUG("   pitch is %d\n", fb->pitch);
 459
 460         printk(KERN_INFO"allocated %dx%d fb\n",
 461                                 psbfb->base.width, psbfb->base.height);
 462
 463         mutex_unlock(&dev->struct_mutex);
 464
 465         return 0;
 466 out_err0:
 467         fb->funcs->destroy(fb);
 468 out_err1:
 469         mutex_unlock(&dev->struct_mutex);
 470         psb_gtt_free_range(dev, backing);
 471         return ret;
 472 }
 473
 474 /**
 475  *      psb_user_framebuffer_create     -       create framebuffer
 476  *      @dev: our DRM device
 477  *      @filp: client file
 478  *      @cmd: mode request
 479  *
 480  *      Create a new framebuffer backed by a userspace GEM object
 481  */
 482 static struct drm_framebuffer *psb_user_framebuffer_create
 483                         (struct drm_device *dev, struct drm_file *filp,
 484                          struct drm_mode_fb_cmd *cmd)
 485 {
 486         struct gtt_range *r;
 487         struct drm_gem_object *obj;
 488         struct psb_framebuffer *psbfb;
 489
 490         /* Find the GEM object and thus the gtt range object that is
 491            to back this space */
 492         obj = drm_gem_object_lookup(dev, filp, cmd->handle);
 493         if (obj == NULL)
 494                 return ERR_PTR(-ENOENT);
 495
 496         /* Allocate a framebuffer */
 497         psbfb = kzalloc(sizeof(*psbfb), GFP_KERNEL);
 498         if (psbfb == NULL) {
 499                 drm_gem_object_unreference_unlocked(obj);
 500                 return ERR_PTR(-ENOMEM);
 501         }
 502
 503         /* Let the core code do all the work */
 504         r = container_of(obj, struct gtt_range, gem);
 505         if (psb_framebuffer_create(dev, cmd, r) == NULL) {
 506                 drm_gem_object_unreference_unlocked(obj);
 507                 kfree(psbfb);
 508                 return ERR_PTR(-EINVAL);
 509         }
 510         /* Return the drm_framebuffer contained within the psb fbdev which
 511            has been initialized by the framebuffer creation */
 512         return &psbfb->base;
 513 }
 514
 515 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 516                                                         u16 blue, int regno)
 517 {
 518         DRM_DEBUG("%s\n", __func__);
 519 }
 520
 521 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
 522                                         u16 *green, u16 *blue, int regno)
 523 {
 524         DRM_DEBUG("%s\n", __func__);
 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 = (struct psb_fbdev *)helper;
 531         int new_fb = 0;
 532         int ret;
 533
 534         DRM_DEBUG("%s\n", __func__);
 535
 536         if (!helper->fb) {
 537                 ret = psbfb_create(psb_fbdev, sizes);
 538                 if (ret)
 539                         return ret;
 540                 new_fb = 1;
 541         }
 542         return new_fb;
 543 }
 544
 545 struct drm_fb_helper_funcs psb_fb_helper_funcs = {
 546         .gamma_set = psbfb_gamma_set,
 547         .gamma_get = psbfb_gamma_get,
 548         .fb_probe = psbfb_probe,
 549 };
 550
 551 int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
 552 {
 553         struct fb_info *info;
 554         struct psb_framebuffer *psbfb = fbdev->pfb;
 555
 556         if (fbdev->psb_fb_helper.fbdev) {
 557                 info = fbdev->psb_fb_helper.fbdev;
 558                 /* FIXME: this is a bit more inside knowledge than I'd like
 559                    but I don't see how to make a fake GEM object of the
 560                    stolen space nicely */
 561                 if (psbfb->gtt->stolen)
 562                         psb_gtt_free_range(dev, psbfb->gtt);
 563                 else
 564                         drm_gem_object_unreference(&psbfb->gtt->gem);
 565                 unregister_framebuffer(info);
 566                 iounmap(info->screen_base);
 567                 framebuffer_release(info);
 568         }
 569
 570         drm_fb_helper_fini(&fbdev->psb_fb_helper);
 571         drm_framebuffer_cleanup(&psbfb->base);
 572         return 0;
 573 }
 574
 575 int psb_fbdev_init(struct drm_device *dev)
 576 {
 577         struct psb_fbdev *fbdev;
 578         struct drm_psb_private *dev_priv = dev->dev_private;
 579         int num_crtc;
 580
 581         fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
 582         if (!fbdev) {
 583                 DRM_ERROR("no memory\n");
 584                 return -ENOMEM;
 585         }
 586
 587         dev_priv->fbdev = fbdev;
 588         fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
 589
 590         num_crtc = 2;
 591
 592         drm_fb_helper_init(dev, &fbdev->psb_fb_helper, num_crtc,
 593                                                         INTELFB_CONN_LIMIT);
 594
 595         drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
 596         drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
 597         return 0;
 598 }
 599
 600 void psb_fbdev_fini(struct drm_device *dev)
 601 {
 602         struct drm_psb_private *dev_priv = dev->dev_private;
 603
 604         if (!dev_priv->fbdev)
 605                 return;
 606
 607         psb_fbdev_destroy(dev, dev_priv->fbdev);
 608         kfree(dev_priv->fbdev);
 609         dev_priv->fbdev = NULL;
 610 }
 611
 612 static void psbfb_output_poll_changed(struct drm_device *dev)
 613 {
 614         struct drm_psb_private *dev_priv = dev->dev_private;
 615         struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
 616         drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
 617 }
 618
 619 int psbfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
 620 {
 621         struct fb_info *info;
 622         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 623
 624         if (drm_psb_no_fb)
 625                 return 0;
 626
 627         info = psbfb->fbdev;
 628
 629         if (info)
 630                 framebuffer_release(info);
 631         return 0;
 632 }
 633 /*EXPORT_SYMBOL(psbfb_remove); */
 634
 635 /**
 636  *      psb_user_framebuffer_create_handle - add hamdle to a framebuffer
 637  *      @fb: framebuffer
 638  *      @file_priv: our DRM file
 639  *      @handle: returned handle
 640  *
 641  *      Our framebuffer object is a GTT range which also contains a GEM
 642  *      object. We need to turn it into a handle for userspace. GEM will do
 643  *      the work for us
 644  */
 645 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 646                                               struct drm_file *file_priv,
 647                                               unsigned int *handle)
 648 {
 649         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 650         struct gtt_range *r = psbfb->gtt;
 651         if (r->stolen)
 652                 return -EOPNOTSUPP;
 653         return drm_gem_handle_create(file_priv, &r->gem, handle);
 654 }
 655
 656 /**
 657  *      psb_user_framebuffer_destroy    -       destruct user created fb
 658  *      @fb: framebuffer
 659  *
 660  *      User framebuffers are backed by GEM objects so all we have to do is
 661  *      clean up a bit and drop the reference, GEM will handle the fallout
 662  */
 663 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
 664 {
 665         struct drm_device *dev = fb->dev;
 666         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 667         struct gtt_range *r = psbfb->gtt;
 668
 669         if (psbfb->fbdev)
 670                 psbfb_remove(dev, fb);
 671
 672         /* Let DRM do its clean up */
 673         drm_framebuffer_cleanup(fb);
 674         /*  We are no longer using the resource in GEM */
 675         drm_gem_object_unreference_unlocked(&r->gem);
 676
 677         kfree(fb);
 678 }
 679
 680 static const struct drm_mode_config_funcs psb_mode_funcs = {
 681         .fb_create = psb_user_framebuffer_create,
 682         .output_poll_changed = psbfb_output_poll_changed,
 683 };
 684
 685 static int psb_create_backlight_property(struct drm_device *dev)
 686 {
 687         struct drm_psb_private *dev_priv
 688                                 = (struct drm_psb_private *) dev->dev_private;
 689         struct drm_property *backlight;
 690
 691         if (dev_priv->backlight_property)
 692                 return 0;
 693
 694         backlight = drm_property_create(dev,
 695                                         DRM_MODE_PROP_RANGE,
 696                                         "backlight",
 697                                         2);
 698         backlight->values[0] = 0;
 699         backlight->values[1] = 100;
 700
 701         dev_priv->backlight_property = backlight;
 702
 703         return 0;
 704 }
 705
 706 static void psb_setup_outputs(struct drm_device *dev)
 707 {
 708         struct drm_psb_private *dev_priv =
 709             (struct drm_psb_private *) dev->dev_private;
 710         struct drm_connector *connector;
 711
 712         PSB_DEBUG_ENTRY("\n");
 713
 714         drm_mode_create_scaling_mode_property(dev);
 715
 716         psb_create_backlight_property(dev);
 717
 718         if (IS_MRST(dev)) {
 719                 if (dev_priv->iLVDS_enable)
 720                         mrst_lvds_init(dev, &dev_priv->mode_dev);
 721                 else
 722                         DRM_ERROR("DSI is not supported\n");
 723         } else {
 724                 psb_intel_lvds_init(dev, &dev_priv->mode_dev);
 725                 psb_intel_sdvo_init(dev, SDVOB);
 726         }
 727
 728         list_for_each_entry(connector, &dev->mode_config.connector_list,
 729                             head) {
 730                 struct psb_intel_output *psb_intel_output =
 731                     to_psb_intel_output(connector);
 732                 struct drm_encoder *encoder = &psb_intel_output->enc;
 733                 int crtc_mask = 0, clone_mask = 0;
 734
 735                 /* valid crtcs */
 736                 switch (psb_intel_output->type) {
 737                 case INTEL_OUTPUT_SDVO:
 738                         crtc_mask = ((1 << 0) | (1 << 1));
 739                         clone_mask = (1 << INTEL_OUTPUT_SDVO);
 740                         break;
 741                 case INTEL_OUTPUT_LVDS:
 742                         PSB_DEBUG_ENTRY("LVDS.\n");
 743                         if (IS_MRST(dev))
 744                                 crtc_mask = (1 << 0);
 745                         else
 746                                 crtc_mask = (1 << 1);
 747                         clone_mask = (1 << INTEL_OUTPUT_LVDS);
 748                         break;
 749                 case INTEL_OUTPUT_MIPI:
 750                         PSB_DEBUG_ENTRY("MIPI.\n");
 751                         crtc_mask = (1 << 0);
 752                         clone_mask = (1 << INTEL_OUTPUT_MIPI);
 753                         break;
 754                 case INTEL_OUTPUT_MIPI2:
 755                         PSB_DEBUG_ENTRY("MIPI2.\n");
 756                         crtc_mask = (1 << 2);
 757                         clone_mask = (1 << INTEL_OUTPUT_MIPI2);
 758                         break;
 759                 case INTEL_OUTPUT_HDMI:
 760                         PSB_DEBUG_ENTRY("HDMI.\n");
 761                         crtc_mask = (1 << 1);
 762                         clone_mask = (1 << INTEL_OUTPUT_HDMI);
 763                         break;
 764                 }
 765
 766                 encoder->possible_crtcs = crtc_mask;
 767                 encoder->possible_clones =
 768                     psb_intel_connector_clones(dev, clone_mask);
 769
 770         }
 771 }
 772
 773 void psb_modeset_init(struct drm_device *dev)
 774 {
 775         struct drm_psb_private *dev_priv =
 776             (struct drm_psb_private *) dev->dev_private;
 777         struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
 778         int i;
 779
 780         PSB_DEBUG_ENTRY("\n");
 781
 782         drm_mode_config_init(dev);
 783
 784         dev->mode_config.min_width = 0;
 785         dev->mode_config.min_height = 0;
 786
 787         dev->mode_config.funcs = (void *) &psb_mode_funcs;
 788
 789         /* set memory base */
 790         /* MRST and PSB should use BAR 2*/
 791         pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
 792                                         &(dev->mode_config.fb_base));
 793
 794         /* num pipes is 2 for PSB but 1 for Mrst */
 795         for (i = 0; i < dev_priv->num_pipe; i++)
 796                 psb_intel_crtc_init(dev, i, mode_dev);
 797
 798         dev->mode_config.max_width = 2048;
 799         dev->mode_config.max_height = 2048;
 800
 801         psb_setup_outputs(dev);
 802
 803         /* setup fbs */
 804         /* drm_initial_config(dev); */
 805 }
 806
 807 void psb_modeset_cleanup(struct drm_device *dev)
 808 {
 809         mutex_lock(&dev->struct_mutex);
 810
 811         drm_kms_helper_poll_fini(dev);
 812         psb_fbdev_fini(dev);
 813
 814         drm_mode_config_cleanup(dev);
 815
 816         mutex_unlock(&dev->struct_mutex);
 817 }