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 #include "psb_pvr_glue.h"
  41
  42 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
  43 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
  44                                               struct drm_file *file_priv,
  45                                               unsigned int *handle);
  46
  47 static const struct drm_framebuffer_funcs psb_fb_funcs = {
  48         .destroy = psb_user_framebuffer_destroy,
  49         .create_handle = psb_user_framebuffer_create_handle,
  50 };
  51
  52 #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
  53
  54 void *psbfb_vdc_reg(struct drm_device *dev)
  55 {
  56         struct drm_psb_private *dev_priv;
  57         dev_priv = (struct drm_psb_private *) dev->dev_private;
  58         return dev_priv->vdc_reg;
  59 }
  60 /*EXPORT_SYMBOL(psbfb_vdc_reg); */
  61
  62 static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
  63                            unsigned blue, unsigned transp,
  64                            struct fb_info *info)
  65 {
  66         struct psb_fbdev *fbdev = info->par;
  67         struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
  68         uint32_t v;
  69
  70         if (!fb)
  71                 return -ENOMEM;
  72
  73         if (regno > 255)
  74                 return 1;
  75
  76         red = CMAP_TOHW(red, info->var.red.length);
  77         blue = CMAP_TOHW(blue, info->var.blue.length);
  78         green = CMAP_TOHW(green, info->var.green.length);
  79         transp = CMAP_TOHW(transp, info->var.transp.length);
  80
  81         v = (red << info->var.red.offset) |
  82             (green << info->var.green.offset) |
  83             (blue << info->var.blue.offset) |
  84             (transp << info->var.transp.offset);
  85
  86         if (regno < 16) {
  87                 switch (fb->bits_per_pixel) {
  88                 case 16:
  89                         ((uint32_t *) info->pseudo_palette)[regno] = v;
  90                         break;
  91                 case 24:
  92                 case 32:
  93                         ((uint32_t *) info->pseudo_palette)[regno] = v;
  94                         break;
  95                 }
  96         }
  97
  98         return 0;
  99 }
 100
 101 static int psbfb_kms_off(struct drm_device *dev, int suspend)
 102 {
 103         struct drm_framebuffer *fb = 0;
 104         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 105         DRM_DEBUG("psbfb_kms_off_ioctl\n");
 106
 107         mutex_lock(&dev->mode_config.mutex);
 108         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 109                 struct fb_info *info = psbfb->fbdev;
 110
 111                 if (suspend) {
 112                         fb_set_suspend(info, 1);
 113                         drm_fb_helper_blank(FB_BLANK_POWERDOWN, info);
 114                 }
 115         }
 116         mutex_unlock(&dev->mode_config.mutex);
 117         return 0;
 118 }
 119
 120 int psbfb_kms_off_ioctl(struct drm_device *dev, void *data,
 121                         struct drm_file *file_priv)
 122 {
 123         int ret;
 124
 125         if (drm_psb_no_fb)
 126                 return 0;
 127         console_lock();
 128         ret = psbfb_kms_off(dev, 0);
 129         console_unlock();
 130
 131         return ret;
 132 }
 133
 134 static int psbfb_kms_on(struct drm_device *dev, int resume)
 135 {
 136         struct drm_framebuffer *fb = 0;
 137         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 138
 139         DRM_DEBUG("psbfb_kms_on_ioctl\n");
 140
 141         mutex_lock(&dev->mode_config.mutex);
 142         list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
 143                 struct fb_info *info = psbfb->fbdev;
 144
 145                 if (resume) {
 146                         fb_set_suspend(info, 0);
 147                         drm_fb_helper_blank(FB_BLANK_UNBLANK, info);
 148                 }
 149         }
 150         mutex_unlock(&dev->mode_config.mutex);
 151
 152         return 0;
 153 }
 154
 155 int psbfb_kms_on_ioctl(struct drm_device *dev, void *data,
 156                        struct drm_file *file_priv)
 157 {
 158         int ret;
 159
 160         if (drm_psb_no_fb)
 161                 return 0;
 162         console_lock();
 163         ret = psbfb_kms_on(dev, 0);
 164         console_unlock();
 165         drm_helper_disable_unused_functions(dev);
 166         return ret;
 167 }
 168
 169 void psbfb_suspend(struct drm_device *dev)
 170 {
 171         console_lock();
 172         psbfb_kms_off(dev, 1);
 173         console_unlock();
 174 }
 175
 176 void psbfb_resume(struct drm_device *dev)
 177 {
 178         console_lock();
 179         psbfb_kms_on(dev, 1);
 180         console_unlock();
 181         drm_helper_disable_unused_functions(dev);
 182 }
 183
 184 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 185 {
 186         int page_num = 0;
 187         int i;
 188         unsigned long address = 0;
 189         int ret;
 190         unsigned long pfn;
 191         struct psb_framebuffer *psbfb = vma->vm_private_data;
 192         struct drm_device *dev = psbfb->base.dev;
 193         struct drm_psb_private *dev_priv = dev->dev_private;
 194         struct psb_gtt *pg = dev_priv->pg;
 195         unsigned long phys_addr = (unsigned long)pg->stolen_base;
 196
 197         page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
 198
 199         address = (unsigned long)vmf->virtual_address;
 200
 201         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 202
 203         for (i = 0; i < page_num; i++) {
 204                 pfn = (phys_addr >> PAGE_SHIFT); /* phys_to_pfn(phys_addr); */
 205
 206                 ret = vm_insert_mixed(vma, address, pfn);
 207                 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
 208                         break;
 209                 else if (unlikely(ret != 0)) {
 210                         ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
 211                         return ret;
 212                 }
 213
 214                 address += PAGE_SIZE;
 215                 phys_addr += PAGE_SIZE;
 216         }
 217
 218         return VM_FAULT_NOPAGE;
 219 }
 220
 221 static void psbfb_vm_open(struct vm_area_struct *vma)
 222 {
 223         DRM_DEBUG("vm_open\n");
 224 }
 225
 226 static void psbfb_vm_close(struct vm_area_struct *vma)
 227 {
 228         DRM_DEBUG("vm_close\n");
 229 }
 230
 231 static struct vm_operations_struct psbfb_vm_ops = {
 232         .fault  = psbfb_vm_fault,
 233         .open   = psbfb_vm_open,
 234         .close  = psbfb_vm_close
 235 };
 236
 237 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 238 {
 239         struct psb_fbdev *fbdev = info->par;
 240         struct psb_framebuffer *psbfb = fbdev->pfb;
 241         char *fb_screen_base = NULL;
 242         struct drm_device *dev = psbfb->base.dev;
 243         struct drm_psb_private *dev_priv = dev->dev_private;
 244         struct psb_gtt *pg = dev_priv->pg;
 245
 246         if (vma->vm_pgoff != 0)
 247                 return -EINVAL;
 248         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
 249                 return -EINVAL;
 250
 251         if (!psbfb->addr_space)
 252                 psbfb->addr_space = vma->vm_file->f_mapping;
 253
 254         fb_screen_base = (char *)info->screen_base;
 255
 256         DRM_DEBUG("vm_pgoff 0x%lx, screen base %p vram_addr %p\n",
 257                                 vma->vm_pgoff, fb_screen_base, pg->vram_addr);
 258
 259         /* FIXME: ultimately this needs to become 'if entirely stolen memory' */
 260         if (1 || fb_screen_base == pg->vram_addr) {
 261                 vma->vm_ops = &psbfb_vm_ops;
 262                 vma->vm_private_data = (void *)psbfb;
 263                 vma->vm_flags |= VM_RESERVED | VM_IO |
 264                                                 VM_MIXEDMAP | VM_DONTEXPAND;
 265         } else {
 266                 /* GTT memory backed by kernel/user pages, needs a different
 267                    approach ? */
 268         }
 269
 270         return 0;
 271 }
 272
 273 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 274 {
 275         struct psb_fbdev *fbdev = info->par;
 276         struct psb_framebuffer *psbfb = fbdev->pfb;
 277         struct drm_device *dev = psbfb->base.dev;
 278         struct drm_psb_private *dev_priv = dev->dev_private;
 279         u32 __user *p = (u32 __user *)arg;
 280         u32 l;
 281         u32 buf[32];
 282         switch (cmd) {
 283         case 0x12345678:
 284                 if (!capable(CAP_SYS_RAWIO))
 285                         return -EPERM;
 286                 if (get_user(l, p))
 287                         return -EFAULT;
 288                 if (l > 32)
 289                         return -EMSGSIZE;
 290                 if (copy_from_user(buf, p + 1, l * sizeof(u32)))
 291                         return -EFAULT;
 292                 psbfb_2d_submit(dev_priv, buf, l);
 293                 return 0;
 294         default:
 295                 return -ENOTTY;
 296         }
 297 }
 298
 299 static struct fb_ops psbfb_ops = {
 300         .owner = THIS_MODULE,
 301         .fb_check_var = drm_fb_helper_check_var,
 302         .fb_set_par = drm_fb_helper_set_par,
 303         .fb_blank = drm_fb_helper_blank,
 304         .fb_setcolreg = psbfb_setcolreg,
 305         .fb_fillrect = psbfb_fillrect,
 306         .fb_copyarea = psbfb_copyarea,
 307         .fb_imageblit = psbfb_imageblit,
 308         .fb_mmap = psbfb_mmap,
 309         .fb_sync = psbfb_sync,
 310         .fb_ioctl = psbfb_ioctl,
 311 };
 312
 313 static struct drm_framebuffer *psb_framebuffer_create
 314                         (struct drm_device *dev, struct drm_mode_fb_cmd *r,
 315                          void *mm_private)
 316 {
 317         struct psb_framebuffer *fb;
 318         int ret;
 319
 320         fb = kzalloc(sizeof(*fb), GFP_KERNEL);
 321         if (!fb)
 322                 return NULL;
 323
 324         ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
 325
 326         if (ret)
 327                 goto err;
 328
 329         drm_helper_mode_fill_fb_struct(&fb->base, r);
 330
 331         fb->mem = mm_private;
 332
 333         return &fb->base;
 334
 335 err:
 336         kfree(fb);
 337         return NULL;
 338 }
 339
 340 static struct drm_framebuffer *psb_user_framebuffer_create
 341                         (struct drm_device *dev, struct drm_file *filp,
 342                          struct drm_mode_fb_cmd *r)
 343 {
 344         return NULL;
 345 #if 0
 346         struct ttm_buffer_object *bo = NULL;
 347         uint64_t size;
 348
 349         bo = ttm_buffer_object_lookup(psb_fpriv(filp)->tfile, r->handle);
 350         if (!bo)
 351                 return NULL;
 352
 353         /* JB: TODO not drop, make smarter */
 354         size = ((uint64_t) bo->num_pages) << PAGE_SHIFT;
 355         if (size < r->width * r->height * 4)
 356                 return NULL;
 357
 358         /* JB: TODO not drop, refcount buffer */
 359         return psb_framebuffer_create(dev, r, bo);
 360
 361         struct psb_framebuffer *psbfb;
 362         struct drm_framebuffer *fb;
 363         struct fb_info *info;
 364         void *psKernelMemInfo = NULL;
 365         void * hKernelMemInfo = (void *)r->handle;
 366         struct drm_psb_private *dev_priv
 367                 = (struct drm_psb_private *)dev->dev_private;
 368         struct psb_fbdev *fbdev = dev_priv->fbdev;
 369         struct psb_gtt *pg = dev_priv->pg;
 370         int ret;
 371         uint32_t offset;
 372         uint64_t size;
 373
 374         ret = psb_get_meminfo_by_handle(hKernelMemInfo, &psKernelMemInfo);
 375         if (ret) {
 376                 DRM_ERROR("Cannot get meminfo for handle 0x%x\n",
 377                                                 (u32)hKernelMemInfo);
 378                 return NULL;
 379         }
 380
 381         DRM_DEBUG("Got Kernel MemInfo for handle %lx\n",
 382                   (u32)hKernelMemInfo);
 383
 384         /* JB: TODO not drop, make smarter */
 385         size = psKernelMemInfo->ui32AllocSize;
 386         if (size < r->height * r->pitch)
 387                 return NULL;
 388
 389         /* JB: TODO not drop, refcount buffer */
 390         /* return psb_framebuffer_create(dev, r, bo); */
 391
 392         fb = psb_framebuffer_create(dev, r, (void *)psKernelMemInfo);
 393         if (!fb) {
 394                 DRM_ERROR("failed to allocate fb.\n");
 395                 return NULL;
 396         }
 397
 398         psbfb = to_psb_fb(fb);
 399         psbfb->size = size;
 400         psbfb->hKernelMemInfo = hKernelMemInfo;
 401
 402         DRM_DEBUG("Mapping to gtt..., KernelMemInfo %p\n", psKernelMemInfo);
 403
 404         /*if not VRAM, map it into tt aperture*/
 405         if (psKernelMemInfo->pvLinAddrKM != pg->vram_addr) {
 406                 ret = psb_gtt_map_meminfo(dev, hKernelMemInfo, &offset);
 407                 if (ret) {
 408                         DRM_ERROR("map meminfo for 0x%x failed\n",
 409                                   (u32)hKernelMemInfo);
 410                         return NULL;
 411                 }
 412                 psbfb->offset = (offset << PAGE_SHIFT);
 413         } else {
 414                 psbfb->offset = 0;
 415         }
 416         info = framebuffer_alloc(0, &dev->pdev->dev);
 417         if (!info)
 418                 return NULL;
 419
 420         strcpy(info->fix.id, "psbfb");
 421
 422         info->flags = FBINFO_DEFAULT;
 423         info->fix.accel = FB_ACCEL_I830;        /*FIXMEAC*/
 424         info->fbops = &psbfb_ops;
 425
 426         info->fix.smem_start = dev->mode_config.fb_base;
 427         info->fix.smem_len = size;
 428
 429         info->screen_base = psKernelMemInfo->pvLinAddrKM;
 430         info->screen_size = size;
 431
 432         drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 433         drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
 434                                                         fb->width, fb->height);
 435
 436         info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
 437         info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
 438
 439         info->pixmap.size = 64 * 1024;
 440         info->pixmap.buf_align = 8;
 441         info->pixmap.access_align = 32;
 442         info->pixmap.flags = FB_PIXMAP_SYSTEM;
 443         info->pixmap.scan_align = 1;
 444
 445         psbfb->fbdev = info;
 446         fbdev->pfb = psbfb;
 447
 448         fbdev->psb_fb_helper.fb = fb;
 449         fbdev->psb_fb_helper.fbdev = info;
 450         MRSTLFBHandleChangeFB(dev, psbfb);
 451
 452         return fb;
 453 #endif
 454 }
 455
 456 static int psbfb_create(struct psb_fbdev *fbdev,
 457                                 struct drm_fb_helper_surface_size *sizes)
 458 {
 459         struct drm_device *dev = fbdev->psb_fb_helper.dev;
 460         struct drm_psb_private *dev_priv = dev->dev_private;
 461         struct psb_gtt *pg = dev_priv->pg;
 462         struct fb_info *info;
 463         struct drm_framebuffer *fb;
 464         struct psb_framebuffer *psbfb;
 465         struct drm_mode_fb_cmd mode_cmd;
 466         struct device *device = &dev->pdev->dev;
 467         int size, aligned_size;
 468         int ret;
 469         struct gtt_range *backing;
 470
 471         mode_cmd.width = sizes->surface_width;
 472         mode_cmd.height = sizes->surface_height;
 473
 474         mode_cmd.bpp = 32;
 475         /* HW requires pitch to be 64 byte aligned */
 476         mode_cmd.pitch =  ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
 477         mode_cmd.depth = 24;
 478
 479         size = mode_cmd.pitch * mode_cmd.height;
 480         aligned_size = ALIGN(size, PAGE_SIZE);
 481
 482         /* Allocate the framebuffer in the GTT with stolen page backing */
 483         backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
 484         if (backing == NULL)
 485                 return -ENOMEM;
 486
 487         mutex_lock(&dev->struct_mutex);
 488         fb = psb_framebuffer_create(dev, &mode_cmd, backing);
 489         if (!fb) {
 490                 DRM_ERROR("failed to allocate fb.\n");
 491                 ret = -ENOMEM;
 492                 goto out_err1;
 493         }
 494         psbfb = to_psb_fb(fb);
 495         psbfb->size = size;
 496
 497         info = framebuffer_alloc(sizeof(struct psb_fbdev), device);
 498         if (!info) {
 499                 ret = -ENOMEM;
 500                 goto out_err0;
 501         }
 502
 503         info->par = fbdev;
 504
 505         psbfb->fbdev = info;
 506
 507         fbdev->psb_fb_helper.fb = fb;
 508         fbdev->psb_fb_helper.fbdev = info;
 509         fbdev->pfb = psbfb;
 510
 511         strcpy(info->fix.id, "psbfb");
 512
 513         info->flags = FBINFO_DEFAULT;
 514         info->fbops = &psbfb_ops;
 515         info->fix.smem_start = dev->mode_config.fb_base;
 516         info->fix.smem_len = size;
 517
 518         /* Accessed via stolen memory directly, This only works for stolem
 519            memory however. Need to address this once we start using gtt
 520            pages we allocate */
 521         info->screen_base = (char *)pg->vram_addr + backing->offset;
 522         info->screen_size = size;
 523         memset(info->screen_base, 0, size);
 524
 525         drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 526         drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
 527                                 sizes->fb_width, sizes->fb_height);
 528
 529         info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
 530         info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
 531
 532         info->pixmap.size = 64 * 1024;
 533         info->pixmap.buf_align = 8;
 534         info->pixmap.access_align = 32;
 535         info->pixmap.flags = FB_PIXMAP_SYSTEM;
 536         info->pixmap.scan_align = 1;
 537
 538         DRM_DEBUG("fb depth is %d\n", fb->depth);
 539         DRM_DEBUG("   pitch is %d\n", fb->pitch);
 540
 541         printk(KERN_INFO"allocated %dx%d fb\n",
 542                                 psbfb->base.width, psbfb->base.height);
 543
 544         mutex_unlock(&dev->struct_mutex);
 545
 546         return 0;
 547 out_err0:
 548         fb->funcs->destroy(fb);
 549 out_err1:
 550         mutex_unlock(&dev->struct_mutex);
 551         psb_gtt_free_range(dev, backing);
 552         return ret;
 553 }
 554
 555 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 556                                                         u16 blue, int regno)
 557 {
 558         DRM_DEBUG("%s\n", __func__);
 559 }
 560
 561 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
 562                                         u16 *green, u16 *blue, int regno)
 563 {
 564         DRM_DEBUG("%s\n", __func__);
 565 }
 566
 567 static int psbfb_probe(struct drm_fb_helper *helper,
 568                                 struct drm_fb_helper_surface_size *sizes)
 569 {
 570         struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
 571         int new_fb = 0;
 572         int ret;
 573
 574         DRM_DEBUG("%s\n", __func__);
 575
 576         if (!helper->fb) {
 577                 ret = psbfb_create(psb_fbdev, sizes);
 578                 if (ret)
 579                         return ret;
 580                 new_fb = 1;
 581         }
 582         return new_fb;
 583 }
 584
 585 struct drm_fb_helper_funcs psb_fb_helper_funcs = {
 586         .gamma_set = psbfb_gamma_set,
 587         .gamma_get = psbfb_gamma_get,
 588         .fb_probe = psbfb_probe,
 589 };
 590
 591 int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
 592 {
 593         struct fb_info *info;
 594         struct psb_framebuffer *psbfb = fbdev->pfb;
 595
 596         if (fbdev->psb_fb_helper.fbdev) {
 597                 info = fbdev->psb_fb_helper.fbdev;
 598                 psb_gtt_free_range(dev, psbfb->mem);
 599                 unregister_framebuffer(info);
 600                 iounmap(info->screen_base);
 601                 framebuffer_release(info);
 602         }
 603
 604         drm_fb_helper_fini(&fbdev->psb_fb_helper);
 605         drm_framebuffer_cleanup(&psbfb->base);
 606         return 0;
 607 }
 608
 609 int psb_fbdev_init(struct drm_device *dev)
 610 {
 611         struct psb_fbdev *fbdev;
 612         struct drm_psb_private *dev_priv = dev->dev_private;
 613         int num_crtc;
 614
 615         fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
 616         if (!fbdev) {
 617                 DRM_ERROR("no memory\n");
 618                 return -ENOMEM;
 619         }
 620
 621         dev_priv->fbdev = fbdev;
 622         fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
 623
 624         num_crtc = 2;
 625
 626         drm_fb_helper_init(dev, &fbdev->psb_fb_helper, num_crtc,
 627                                                         INTELFB_CONN_LIMIT);
 628
 629         drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
 630         drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
 631         return 0;
 632 }
 633
 634 void psb_fbdev_fini(struct drm_device *dev)
 635 {
 636         struct drm_psb_private *dev_priv = dev->dev_private;
 637
 638         if (!dev_priv->fbdev)
 639                 return;
 640
 641         psb_fbdev_destroy(dev, dev_priv->fbdev);
 642         kfree(dev_priv->fbdev);
 643         dev_priv->fbdev = NULL;
 644 }
 645
 646
 647 static void psbfb_output_poll_changed(struct drm_device *dev)
 648 {
 649         struct drm_psb_private *dev_priv = dev->dev_private;
 650         struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
 651         drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
 652 }
 653
 654 int psbfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
 655 {
 656         struct fb_info *info;
 657         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 658
 659         if (drm_psb_no_fb)
 660                 return 0;
 661
 662         info = psbfb->fbdev;
 663
 664         if (info)
 665                 framebuffer_release(info);
 666         return 0;
 667 }
 668 /*EXPORT_SYMBOL(psbfb_remove); */
 669
 670 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 671                                               struct drm_file *file_priv,
 672                                               unsigned int *handle)
 673 {
 674         /* JB: TODO currently we can't go from a bo to a handle with ttm */
 675         (void) file_priv;
 676         *handle = 0;
 677         return 0;
 678 }
 679
 680 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
 681 {
 682         struct drm_device *dev = fb->dev;
 683         struct psb_framebuffer *psbfb = to_psb_fb(fb);
 684
 685         /*ummap gtt pages*/
 686         psb_gtt_unmap_meminfo(dev, psbfb->hKernelMemInfo);
 687         if (psbfb->fbdev)
 688                 psbfb_remove(dev, fb);
 689
 690         /* JB: TODO not drop, refcount buffer */
 691         drm_framebuffer_cleanup(fb);
 692         kfree(fb);
 693 }
 694
 695 static const struct drm_mode_config_funcs psb_mode_funcs = {
 696         .fb_create = psb_user_framebuffer_create,
 697         .output_poll_changed = psbfb_output_poll_changed,
 698 };
 699
 700 static int psb_create_backlight_property(struct drm_device *dev)
 701 {
 702         struct drm_psb_private *dev_priv
 703                                 = (struct drm_psb_private *) dev->dev_private;
 704         struct drm_property *backlight;
 705
 706         if (dev_priv->backlight_property)
 707                 return 0;
 708
 709         backlight = drm_property_create(dev,
 710                                         DRM_MODE_PROP_RANGE,
 711                                         "backlight",
 712                                         2);
 713         backlight->values[0] = 0;
 714         backlight->values[1] = 100;
 715
 716         dev_priv->backlight_property = backlight;
 717
 718         return 0;
 719 }
 720
 721 static void psb_setup_outputs(struct drm_device *dev)
 722 {
 723         struct drm_psb_private *dev_priv =
 724             (struct drm_psb_private *) dev->dev_private;
 725         struct drm_connector *connector;
 726
 727         PSB_DEBUG_ENTRY("\n");
 728
 729         drm_mode_create_scaling_mode_property(dev);
 730
 731         psb_create_backlight_property(dev);
 732
 733         if (IS_MRST(dev)) {
 734                 if (dev_priv->iLVDS_enable)
 735                         mrst_lvds_init(dev, &dev_priv->mode_dev);
 736                 else
 737                         DRM_ERROR("DSI is not supported\n");
 738         } else {
 739                 psb_intel_lvds_init(dev, &dev_priv->mode_dev);
 740                 psb_intel_sdvo_init(dev, SDVOB);
 741         }
 742
 743         list_for_each_entry(connector, &dev->mode_config.connector_list,
 744                             head) {
 745                 struct psb_intel_output *psb_intel_output =
 746                     to_psb_intel_output(connector);
 747                 struct drm_encoder *encoder = &psb_intel_output->enc;
 748                 int crtc_mask = 0, clone_mask = 0;
 749
 750                 /* valid crtcs */
 751                 switch (psb_intel_output->type) {
 752                 case INTEL_OUTPUT_SDVO:
 753                         crtc_mask = ((1 << 0) | (1 << 1));
 754                         clone_mask = (1 << INTEL_OUTPUT_SDVO);
 755                         break;
 756                 case INTEL_OUTPUT_LVDS:
 757                         PSB_DEBUG_ENTRY("LVDS.\n");
 758                         if (IS_MRST(dev))
 759                                 crtc_mask = (1 << 0);
 760                         else
 761                                 crtc_mask = (1 << 1);
 762                         clone_mask = (1 << INTEL_OUTPUT_LVDS);
 763                         break;
 764                 case INTEL_OUTPUT_MIPI:
 765                         PSB_DEBUG_ENTRY("MIPI.\n");
 766                         crtc_mask = (1 << 0);
 767                         clone_mask = (1 << INTEL_OUTPUT_MIPI);
 768                         break;
 769                 case INTEL_OUTPUT_MIPI2:
 770                         PSB_DEBUG_ENTRY("MIPI2.\n");
 771                         crtc_mask = (1 << 2);
 772                         clone_mask = (1 << INTEL_OUTPUT_MIPI2);
 773                         break;
 774                 case INTEL_OUTPUT_HDMI:
 775                         PSB_DEBUG_ENTRY("HDMI.\n");
 776                         crtc_mask = (1 << 1);
 777                         clone_mask = (1 << INTEL_OUTPUT_HDMI);
 778                         break;
 779                 }
 780
 781                 encoder->possible_crtcs = crtc_mask;
 782                 encoder->possible_clones =
 783                     psb_intel_connector_clones(dev, clone_mask);
 784
 785         }
 786 }
 787
 788 static void *psb_bo_from_handle(struct drm_device *dev,
 789                                 struct drm_file *file_priv,
 790                                 unsigned int handle)
 791 {
 792         void *psKernelMemInfo = NULL;
 793         void * hKernelMemInfo = (void *)handle;
 794         int ret;
 795
 796         ret = psb_get_meminfo_by_handle(hKernelMemInfo, &psKernelMemInfo);
 797         if (ret) {
 798                 DRM_ERROR("Cannot get meminfo for handle 0x%x\n",
 799                           (u32)hKernelMemInfo);
 800                 return NULL;
 801         }
 802
 803         return (void *)psKernelMemInfo;
 804 }
 805
 806 static size_t psb_bo_size(struct drm_device *dev, void *bof)
 807 {
 808 #if 0
 809         void *psKernelMemInfo   = (void *)bof;
 810         return (size_t)psKernelMemInfo->ui32AllocSize;
 811 #else
 812         return 0;
 813 #endif
 814 }
 815
 816 static size_t psb_bo_offset(struct drm_device *dev, void *bof)
 817 {
 818         struct psb_framebuffer *psbfb
 819                 = (struct psb_framebuffer *)bof;
 820
 821         return (size_t)psbfb->offset;
 822 }
 823
 824 static int psb_bo_pin_for_scanout(struct drm_device *dev, void *bo)
 825 {
 826          return 0;
 827 }
 828
 829 static int psb_bo_unpin_for_scanout(struct drm_device *dev, void *bo)
 830 {
 831         return 0;
 832 }
 833
 834 void psb_modeset_init(struct drm_device *dev)
 835 {
 836         struct drm_psb_private *dev_priv =
 837             (struct drm_psb_private *) dev->dev_private;
 838         struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
 839         int i;
 840
 841         PSB_DEBUG_ENTRY("\n");
 842         /* Init mm functions */
 843         mode_dev->bo_from_handle = psb_bo_from_handle;
 844         mode_dev->bo_size = psb_bo_size;
 845         mode_dev->bo_offset = psb_bo_offset;
 846         mode_dev->bo_pin_for_scanout = psb_bo_pin_for_scanout;
 847         mode_dev->bo_unpin_for_scanout = psb_bo_unpin_for_scanout;
 848
 849         drm_mode_config_init(dev);
 850
 851         dev->mode_config.min_width = 0;
 852         dev->mode_config.min_height = 0;
 853
 854         dev->mode_config.funcs = (void *) &psb_mode_funcs;
 855
 856         /* set memory base */
 857         /* MRST and PSB should use BAR 2*/
 858         pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
 859                                         &(dev->mode_config.fb_base));
 860
 861         /* num pipes is 2 for PSB but 1 for Mrst */
 862         for (i = 0; i < dev_priv->num_pipe; i++)
 863                 psb_intel_crtc_init(dev, i, mode_dev);
 864
 865         dev->mode_config.max_width = 2048;
 866         dev->mode_config.max_height = 2048;
 867
 868         psb_setup_outputs(dev);
 869
 870         /* setup fbs */
 871         /* drm_initial_config(dev); */
 872 }
 873
 874 void psb_modeset_cleanup(struct drm_device *dev)
 875 {
 876         mutex_lock(&dev->struct_mutex);
 877
 878         drm_kms_helper_poll_fini(dev);
 879         psb_fbdev_fini(dev);
 880
 881         drm_mode_config_cleanup(dev);
 882
 883         mutex_unlock(&dev->struct_mutex);
 884 }