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         /* If this is a GEM object then info->screen_base is the virtual
 258            kernel remapping of the object. FIXME: Review if this is
 259            suitable for our mmap work */
 260         vma->vm_ops = &psbfb_vm_ops;
 261         vma->vm_private_data = (void *)psbfb;
 262         vma->vm_flags |= VM_RESERVED | VM_IO |
 263                                         VM_MIXEDMAP | VM_DONTEXPAND;
 264         return 0;
 265 }
 266
 267 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 268 {
 269         struct psb_fbdev *fbdev = info->par;
 270         struct psb_framebuffer *psbfb = &fbdev->pfb;
 271         struct drm_device *dev = psbfb->base.dev;
 272         struct drm_psb_private *dev_priv = dev->dev_private;
 273         u32 __user *p = (u32 __user *)arg;
 274         u32 l;
 275         u32 buf[32];
 276         switch (cmd) {
 277         case 0x12345678:
 278                 if (!capable(CAP_SYS_RAWIO))
 279                         return -EPERM;
 280                 if (get_user(l, p))
 281                         return -EFAULT;
 282                 if (l > 32)
 283                         return -EMSGSIZE;
 284                 if (copy_from_user(buf, p + 1, l * sizeof(u32)))
 285                         return -EFAULT;
 286                 psbfb_2d_submit(dev_priv, buf, l);
 287                 return 0;
 288         default:
 289                 return -ENOTTY;
 290         }
 291 }
 292
 293 static struct fb_ops psbfb_ops = {
 294         .owner = THIS_MODULE,
 295         .fb_check_var = drm_fb_helper_check_var,
 296         .fb_set_par = drm_fb_helper_set_par,
 297         .fb_blank = drm_fb_helper_blank,
 298         .fb_setcolreg = psbfb_setcolreg,
 299         .fb_fillrect = psbfb_fillrect,
 300         .fb_copyarea = psbfb_copyarea,
 301         .fb_imageblit = psbfb_imageblit,
 302         .fb_mmap = psbfb_mmap,
 303         .fb_sync = psbfb_sync,
 304         .fb_ioctl = psbfb_ioctl,
 305 };
 306
 307 /**
 308  *      psb_framebuffer_init    -       initialize a framebuffer
 309  *      @dev: our DRM device
 310  *      @fb: framebuffer to set up
 311  *      @mode_cmd: mode description
 312  *      @gt: backing object
 313  *
 314  *      Configure and fill in the boilerplate for our frame buffer. Return
 315  *      0 on success or an error code if we fail.
 316  */
 317 static int psb_framebuffer_init(struct drm_device *dev,
 318                                 struct psb_framebuffer *fb,
 319                                 struct drm_mode_fb_cmd *mode_cmd,
 320                                 struct gtt_range *gt)
 321 {
 322         int ret;
 323
 324         if (mode_cmd->pitch & 63)
 325                 return -EINVAL;
 326         switch (mode_cmd->bpp) {
 327         case 8:
 328         case 16:
 329         case 24:
 330         case 32:
 331                 break;
 332         default:
 333                 return -EINVAL;
 334         }
 335         ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
 336         if (ret) {
 337                 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
 338                 return ret;
 339         }
 340         drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
 341         fb->gtt = gt;
 342         return 0;
 343 }
 344
 345 /**
 346  *      psb_framebuffer_create  -       create a framebuffer backed by gt
 347  *      @dev: our DRM device
 348  *      @mode_cmd: the description of the requested mode
 349  *      @gt: the backing object
 350  *
 351  *      Create a framebuffer object backed by the gt, and fill in the
 352  *      boilerplate required
 353  *
 354  *      TODO: review object references
 355  */
 356 static struct drm_framebuffer *psb_framebuffer_create
 357                         (struct drm_device *dev,
 358                          struct drm_mode_fb_cmd *mode_cmd,
 359                          struct gtt_range *gt)
 360 {
 361         struct psb_framebuffer *fb;
 362         int ret;
 363
 364         fb = kzalloc(sizeof(*fb), GFP_KERNEL);
 365         if (!fb)
 366                 return ERR_PTR(-ENOMEM);
 367
 368         ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
 369         if (ret) {
 370                 kfree(fb);
 371                 return ERR_PTR(ret);
 372         }
 373         return &fb->base;
 374 }
 375
 376 /**
 377  *      psbfb_alloc             -       allocate frame buffer memory
 378  *      @dev: the DRM device
 379  *      @aligned_size: space needed
 380  *
 381  *      Allocate the frame buffer. In the usual case we get a GTT range that
 382  *      is stolen memory backed and life is simple. If there isn't sufficient
 383  *      stolen memory or the system has no stolen memory we allocate a range
 384  *      and back it with a GEM object.
 385  *
 386  *      In this case the GEM object has no handle.
 387  *
 388  *      FIXME: console speed up - allocate twice the space if room and use
 389  *      hardware scrolling for acceleration.
 390  */
 391 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
 392 {
 393         struct gtt_range *backing;
 394         /* Begin by trying to use stolen memory backing */
 395         backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
 396         if (backing)
 397                 return backing;
 398         /* Next try using GEM host memory */
 399         backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0);
 400         if (backing == NULL)
 401                 return NULL;
 402
 403         /* Now back it with an object */
 404         if (drm_gem_object_init(dev, &backing->gem, aligned_size) != 0) {
 405                 psb_gtt_free_range(dev, backing);
 406                 return NULL;
 407         }
 408         return backing;
 409 }
 410
 411 /**
 412  *      psbfb_create            -       create a framebuffer
 413  *      @fbdev: the framebuffer device
 414  *      @sizes: specification of the layout
 415  *
 416  *      Create a framebuffer to the specifications provided
 417  */
 418 static int psbfb_create(struct psb_fbdev *fbdev,
 419                                 struct drm_fb_helper_surface_size *sizes)
 420 {
 421         struct drm_device *dev = fbdev->psb_fb_helper.dev;
 422         struct drm_psb_private *dev_priv = dev->dev_private;
 423         struct fb_info *info;
 424         struct drm_framebuffer *fb;
 425         struct psb_framebuffer *psbfb = &fbdev->pfb;
 426         struct drm_mode_fb_cmd mode_cmd;
 427         struct device *device = &dev->pdev->dev;
 428         int size;
 429         int ret;
 430         struct gtt_range *backing;
 431
 432         mode_cmd.width = sizes->surface_width;
 433         mode_cmd.height = sizes->surface_height;
 434         mode_cmd.bpp = sizes->surface_bpp;
 435
 436         /* No 24bit packed */
 437         if (mode_cmd.bpp == 24)
 438                 mode_cmd.bpp = 32;
 439
 440         /* HW requires pitch to be 64 byte aligned */
 441         mode_cmd.pitch =  ALIGN(mode_cmd.width * ((mode_cmd.bpp + 7) / 8), 64);
 442         mode_cmd.depth = sizes->surface_depth;
 443
 444         size = mode_cmd.pitch * mode_cmd.height;
 445         size = ALIGN(size, PAGE_SIZE);
 446
 447         /* Allocate the framebuffer in the GTT with stolen page backing */
 448         backing = psbfb_alloc(dev, size);
 449         if (backing == NULL)
 450                 return -ENOMEM;
 451
 452         mutex_lock(&dev->struct_mutex);
 453
 454         info = framebuffer_alloc(0, device);
 455         if (!info) {
 456                 ret = -ENOMEM;
 457                 goto out_err1;
 458         }
 459         info->par = fbdev;
 460
 461         ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
 462         if (ret)
 463                 goto out_unref;
 464
 465         fb = &psbfb->base;
 466         psbfb->fbdev = info;
 467
 468         fbdev->psb_fb_helper.fb = fb;
 469         fbdev->psb_fb_helper.fbdev = info;
 470
 471         strcpy(info->fix.id, "psbfb");
 472
 473         info->flags = FBINFO_DEFAULT;
 474         info->fbops = &psbfb_ops;
 475
 476         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 477         if (ret) {
 478                 ret = -ENOMEM;
 479                 goto out_unref;
 480         }
 481
 482         info->fix.smem_start = dev->mode_config.fb_base;
 483         info->fix.smem_len = size;
 484
 485         if (backing->stolen) {
 486                 /* Accessed stolen memory directly */
 487                 info->screen_base = (char *)dev_priv->vram_addr +
 488                                                         backing->offset;
 489         } else {
 490                 /* Pin the pages into the GTT and create a mapping to them */
 491                 psb_gtt_pin(backing);
 492                 info->screen_base = vm_map_ram(backing->pages, backing->npage,
 493                                 -1, PAGE_KERNEL);
 494                 if (info->screen_base == NULL) {
 495                         psb_gtt_unpin(backing);
 496                         ret = -ENOMEM;
 497                         goto out_unref;
 498                 }
 499                 psbfb->vm_map = 1;
 500         }
 501         info->screen_size = size;
 502 /*      memset(info->screen_base, 0, size); */
 503
 504         if (dev_priv->pg->stolen_size) {
 505                 info->apertures = alloc_apertures(1);
 506                 if (!info->apertures) {
 507                         ret = -ENOMEM;
 508                         goto out_unref;
 509                 }
 510                 info->apertures->ranges[0].base = dev->mode_config.fb_base;
 511                 info->apertures->ranges[0].size = dev_priv->pg->stolen_size;
 512         }
 513
 514         drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 515         drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
 516                                 sizes->fb_width, sizes->fb_height);
 517
 518         info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
 519         info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
 520
 521         info->pixmap.size = 64 * 1024;
 522         info->pixmap.buf_align = 8;
 523         info->pixmap.access_align = 32;
 524         info->pixmap.flags = FB_PIXMAP_SYSTEM;
 525         info->pixmap.scan_align = 1;
 526
 527         DRM_DEBUG("fb depth is %d\n", fb->depth);
 528         DRM_DEBUG("   pitch is %d\n", fb->pitch);
 529
 530         printk(KERN_INFO"allocated %dx%d fb\n",
 531                                 psbfb->base.width, psbfb->base.height);
 532
 533         mutex_unlock(&dev->struct_mutex);
 534
 535         return 0;
 536 out_unref:
 537         if (backing->stolen)
 538                 psb_gtt_free_range(dev, backing);
 539         else {
 540                 if (psbfb->vm_map)
 541                         vm_unmap_ram(info->screen_base, backing->npage);
 542                 drm_gem_object_unreference(&backing->gem);
 543         }
 544 out_err1:
 545         mutex_unlock(&dev->struct_mutex);
 546         psb_gtt_free_range(dev, backing);
 547         return ret;
 548 }
 549
 550 /**
 551  *      psb_user_framebuffer_create     -       create framebuffer
 552  *      @dev: our DRM device
 553  *      @filp: client file
 554  *      @cmd: mode request
 555  *
 556  *      Create a new framebuffer backed by a userspace GEM object
 557  */
 558 static struct drm_framebuffer *psb_user_framebuffer_create
 559                         (struct drm_device *dev, struct drm_file *filp,
 560                          struct drm_mode_fb_cmd *cmd)
 561 {
 562         struct gtt_range *r;
 563         struct drm_gem_object *obj;
 564
 565         /* Find the GEM object and thus the gtt range object that is
 566            to back this space */
 567         obj = drm_gem_object_lookup(dev, filp, cmd->handle);
 568         if (obj == NULL)
 569                 return ERR_PTR(-ENOENT);
 570
 571         /* Let the core code do all the work */
 572         r = container_of(obj, struct gtt_range, gem);
 573         return psb_framebuffer_create(dev, cmd, r);
 574 }
 575
 576 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 577                                                         u16 blue, int regno)
 578 {
 579         DRM_DEBUG("%s\n", __func__);
 580 }
 581
 582 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
 583                                         u16 *green, u16 *blue, int regno)
 584 {
 585         DRM_DEBUG("%s\n", __func__);
 586 }
 587
 588 static int psbfb_probe(struct drm_fb_helper *helper,
 589                                 struct drm_fb_helper_surface_size *sizes)
 590 {
 591         struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
 592         int new_fb = 0;
 593         int ret;
 594
 595         DRM_DEBUG("%s\n", __func__);
 596
 597         if (!helper->fb) {
 598                 ret = psbfb_create(psb_fbdev, sizes);
 599                 if (ret)
 600                         return ret;
 601                 new_fb = 1;
 602         }
 603         return new_fb;
 604 }
 605
 606 struct drm_fb_helper_funcs psb_fb_helper_funcs = {
 607         .gamma_set = psbfb_gamma_set,
 608         .gamma_get = psbfb_gamma_get,
 609         .fb_probe = psbfb_probe,
 610 };
 611
 612 int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
 613 {
 614         struct fb_info *info;
 615         struct psb_framebuffer *psbfb = &fbdev->pfb;
 616
 617         if (fbdev->psb_fb_helper.fbdev) {
 618                 info = fbdev->psb_fb_helper.fbdev;
 619
 620                 /* If this is our base framebuffer then kill any virtual map
 621                    for the framebuffer layer and unpin it */
 622                 if (psbfb->vm_map) {
 623                         vm_unmap_ram(info->screen_base, psbfb->gtt->npage);
 624                         psb_gtt_unpin(psbfb->gtt);
 625                 }
 626                 unregister_framebuffer(info);
 627                 if (info->cmap.len)
 628                         fb_dealloc_cmap(&info->cmap);
 629                 framebuffer_release(info);
 630         }
 631         drm_fb_helper_fini(&fbdev->psb_fb_helper);
 632         drm_framebuffer_cleanup(&psbfb->base);
 633
 634         if (psbfb->gtt) {
 635                 /* FIXME: this is a bit more inside knowledge than I'd like
 636                    but I don't see how to make a fake GEM object of the
 637                    stolen space nicely */
 638                 if (psbfb->gtt->stolen)
 639                         psb_gtt_free_range(dev, psbfb->gtt);
 640                 else
 641                         drm_gem_object_unreference(&psbfb->gtt->gem);
 642         }
 643         return 0;
 644 }
 645
 646 int psb_fbdev_init(struct drm_device *dev)
 647 {
 648         struct psb_fbdev *fbdev;
 649         struct drm_psb_private *dev_priv = dev->dev_private;
 650         int num_crtc;
 651
 652         fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
 653         if (!fbdev) {
 654                 DRM_ERROR("no memory\n");
 655                 return -ENOMEM;
 656         }
 657
 658         dev_priv->fbdev = fbdev;
 659         fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
 660
 661         num_crtc = 2;
 662
 663         drm_fb_helper_init(dev, &fbdev->psb_fb_helper, num_crtc,
 664                                                         INTELFB_CONN_LIMIT);
 665
 666         drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
 667         drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
 668         return 0;
 669 }
 670
 671 void psb_fbdev_fini(struct drm_device *dev)
 672 {
 673         struct drm_psb_private *dev_priv = dev->dev_private;
 674
 675         if (!dev_priv->fbdev)
 676                 return;
 677
 678         psb_fbdev_destroy(dev, dev_priv->fbdev);
 679         kfree(dev_priv->fbdev);
 680         dev_priv->fbdev = NULL;
 681 }
 682
 683 static void psbfb_output_poll_changed(struct drm_device *dev)
 684 {
 685         struct drm_psb_private *dev_priv = dev->dev_private;
 686         struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
 687         drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
 688 }
 689
 690 /**
 691  *      psb_user_framebuffer_create_handle - add hamdle to a framebuffer
 692  *      @fb: framebuffer
 693  *      @file_priv: our DRM file
 694  *      @handle: returned handle
 695  *
 696  *      Our framebuffer object is a GTT range which also contains a GEM
 697  *      object. We need to turn it into a handle for userspace. GEM will do
 698  *      the work for us
 699  */
 700 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 701                                               struct drm_file *file_priv,
 702                                               unsigned int *handle)
 703 {
 704         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 705         struct gtt_range *r = psbfb->gtt;
 706         if (r->stolen)
 707                 return -EOPNOTSUPP;
 708         return drm_gem_handle_create(file_priv, &r->gem, handle);
 709 }
 710
 711 /**
 712  *      psb_user_framebuffer_destroy    -       destruct user created fb
 713  *      @fb: framebuffer
 714  *
 715  *      User framebuffers are backed by GEM objects so all we have to do is
 716  *      clean up a bit and drop the reference, GEM will handle the fallout
 717  */
 718 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
 719 {
 720         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 721         struct gtt_range *r = psbfb->gtt;
 722
 723         /* Should never get stolen memory for a user fb */
 724         WARN_ON(r->stolen);
 725         pr_err("user framebuffer destroy %p, fbdev %p\n",
 726                                                 psbfb, psbfb->fbdev);
 727         /* Let DRM do its clean up */
 728         drm_framebuffer_cleanup(fb);
 729         /*  We are no longer using the resource in GEM */
 730         drm_gem_object_unreference_unlocked(&r->gem);
 731
 732         kfree(fb);
 733 }
 734
 735 static const struct drm_mode_config_funcs psb_mode_funcs = {
 736         .fb_create = psb_user_framebuffer_create,
 737         .output_poll_changed = psbfb_output_poll_changed,
 738 };
 739
 740 static int psb_create_backlight_property(struct drm_device *dev)
 741 {
 742         struct drm_psb_private *dev_priv
 743                                 = (struct drm_psb_private *) dev->dev_private;
 744         struct drm_property *backlight;
 745
 746         if (dev_priv->backlight_property)
 747                 return 0;
 748
 749         backlight = drm_property_create(dev,
 750                                         DRM_MODE_PROP_RANGE,
 751                                         "backlight",
 752                                         2);
 753         backlight->values[0] = 0;
 754         backlight->values[1] = 100;
 755
 756         dev_priv->backlight_property = backlight;
 757
 758         return 0;
 759 }
 760
 761 static void psb_setup_outputs(struct drm_device *dev)
 762 {
 763         struct drm_psb_private *dev_priv =
 764             (struct drm_psb_private *) dev->dev_private;
 765         struct drm_connector *connector;
 766
 767         PSB_DEBUG_ENTRY("\n");
 768
 769         drm_mode_create_scaling_mode_property(dev);
 770
 771         psb_create_backlight_property(dev);
 772
 773         if (IS_MRST(dev)) {
 774                 if (dev_priv->iLVDS_enable)
 775                         mrst_lvds_init(dev, &dev_priv->mode_dev);
 776                 else
 777                         DRM_ERROR("DSI is not supported\n");
 778         } else {
 779                 psb_intel_lvds_init(dev, &dev_priv->mode_dev);
 780                 psb_intel_sdvo_init(dev, SDVOB);
 781         }
 782
 783         list_for_each_entry(connector, &dev->mode_config.connector_list,
 784                             head) {
 785                 struct psb_intel_output *psb_intel_output =
 786                     to_psb_intel_output(connector);
 787                 struct drm_encoder *encoder = &psb_intel_output->enc;
 788                 int crtc_mask = 0, clone_mask = 0;
 789
 790                 /* valid crtcs */
 791                 switch (psb_intel_output->type) {
 792                 case INTEL_OUTPUT_SDVO:
 793                         crtc_mask = ((1 << 0) | (1 << 1));
 794                         clone_mask = (1 << INTEL_OUTPUT_SDVO);
 795                         break;
 796                 case INTEL_OUTPUT_LVDS:
 797                         PSB_DEBUG_ENTRY("LVDS.\n");
 798                         if (IS_MRST(dev))
 799                                 crtc_mask = (1 << 0);
 800                         else
 801                                 crtc_mask = (1 << 1);
 802                         clone_mask = (1 << INTEL_OUTPUT_LVDS);
 803                         break;
 804                 case INTEL_OUTPUT_MIPI:
 805                         PSB_DEBUG_ENTRY("MIPI.\n");
 806                         crtc_mask = (1 << 0);
 807                         clone_mask = (1 << INTEL_OUTPUT_MIPI);
 808                         break;
 809                 case INTEL_OUTPUT_MIPI2:
 810                         PSB_DEBUG_ENTRY("MIPI2.\n");
 811                         crtc_mask = (1 << 2);
 812                         clone_mask = (1 << INTEL_OUTPUT_MIPI2);
 813                         break;
 814                 case INTEL_OUTPUT_HDMI:
 815                         PSB_DEBUG_ENTRY("HDMI.\n");
 816                         crtc_mask = (1 << 1);
 817                         clone_mask = (1 << INTEL_OUTPUT_HDMI);
 818                         break;
 819                 }
 820
 821                 encoder->possible_crtcs = crtc_mask;
 822                 encoder->possible_clones =
 823                     psb_intel_connector_clones(dev, clone_mask);
 824
 825         }
 826 }
 827
 828 void psb_modeset_init(struct drm_device *dev)
 829 {
 830         struct drm_psb_private *dev_priv =
 831             (struct drm_psb_private *) dev->dev_private;
 832         struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
 833         int i;
 834
 835         PSB_DEBUG_ENTRY("\n");
 836
 837         drm_mode_config_init(dev);
 838
 839         dev->mode_config.min_width = 0;
 840         dev->mode_config.min_height = 0;
 841
 842         dev->mode_config.funcs = (void *) &psb_mode_funcs;
 843
 844         /* set memory base */
 845         /* MRST and PSB should use BAR 2*/
 846         pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
 847                                         &(dev->mode_config.fb_base));
 848
 849         /* num pipes is 2 for PSB but 1 for Mrst */
 850         for (i = 0; i < dev_priv->num_pipe; i++)
 851                 psb_intel_crtc_init(dev, i, mode_dev);
 852
 853         dev->mode_config.max_width = 2048;
 854         dev->mode_config.max_height = 2048;
 855
 856         psb_setup_outputs(dev);
 857
 858         /* setup fbs */
 859         /* drm_initial_config(dev); */
 860 }
 861
 862 void psb_modeset_cleanup(struct drm_device *dev)
 863 {
 864         mutex_lock(&dev->struct_mutex);
 865
 866         drm_kms_helper_poll_fini(dev);
 867         psb_fbdev_fini(dev);
 868
 869         drm_mode_config_cleanup(dev);
 870
 871         mutex_unlock(&dev->struct_mutex);
 872 }