1 /************************************************************************** 2 * Copyright (c) 2007-2011, Intel Corporation. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms and conditions of the GNU General Public License, 7 * version 2, as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program; if not, write to the Free Software Foundation, Inc., 16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 **************************************************************************/ 19 20 #include <linux/module.h> 21 #include <linux/kernel.h> 22 #include <linux/errno.h> 23 #include <linux/string.h> 24 #include <linux/mm.h> 25 #include <linux/tty.h> 26 #include <linux/slab.h> 27 #include <linux/delay.h> 28 #include <linux/fb.h> 29 #include <linux/init.h> 30 #include <linux/console.h> 31 32 #include <drm/drmP.h> 33 #include <drm/drm.h> 34 #include <drm/drm_crtc.h> 35 #include <drm/drm_fb_helper.h> 36 37 #include "psb_drv.h" 38 #include "psb_intel_reg.h" 39 #include "psb_intel_drv.h" 40 #include "framebuffer.h" 41 #include "gtt.h" 42 43 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb); 44 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, 45 struct drm_file *file_priv, 46 unsigned int *handle); 47 48 static const struct drm_framebuffer_funcs psb_fb_funcs = { 49 .destroy = psb_user_framebuffer_destroy, 50 .create_handle = psb_user_framebuffer_create_handle, 51 }; 52 53 #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16) 54 55 static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green, 56 unsigned blue, unsigned transp, 57 struct fb_info *info) 58 { 59 struct psb_fbdev *fbdev = info->par; 60 struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb; 61 uint32_t v; 62 63 if (!fb) 64 return -ENOMEM; 65 66 if (regno > 255) 67 return 1; 68 69 red = CMAP_TOHW(red, info->var.red.length); 70 blue = CMAP_TOHW(blue, info->var.blue.length); 71 green = CMAP_TOHW(green, info->var.green.length); 72 transp = CMAP_TOHW(transp, info->var.transp.length); 73 74 v = (red << info->var.red.offset) | 75 (green << info->var.green.offset) | 76 (blue << info->var.blue.offset) | 77 (transp << info->var.transp.offset); 78 79 if (regno < 16) { 80 switch (fb->bits_per_pixel) { 81 case 16: 82 ((uint32_t *) info->pseudo_palette)[regno] = v; 83 break; 84 case 24: 85 case 32: 86 ((uint32_t *) info->pseudo_palette)[regno] = v; 87 break; 88 } 89 } 90 91 return 0; 92 } 93 94 static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info) 95 { 96 struct psb_fbdev *fbdev = info->par; 97 struct psb_framebuffer *psbfb = &fbdev->pfb; 98 struct drm_device *dev = psbfb->base.dev; 99 100 /* 101 * We have to poke our nose in here. The core fb code assumes 102 * panning is part of the hardware that can be invoked before 103 * the actual fb is mapped. In our case that isn't quite true. 104 */ 105 if (psbfb->gtt->npage) { 106 /* GTT roll shifts in 4K pages, we need to shift the right 107 number of pages */ 108 int pages = info->fix.line_length >> 12; 109 psb_gtt_roll(dev, psbfb->gtt, var->yoffset * pages); 110 } 111 return 0; 112 } 113 114 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) 115 { 116 struct psb_framebuffer *psbfb = vma->vm_private_data; 117 struct drm_device *dev = psbfb->base.dev; 118 struct drm_psb_private *dev_priv = dev->dev_private; 119 int page_num; 120 int i; 121 unsigned long address; 122 int ret; 123 unsigned long pfn; 124 unsigned long phys_addr = (unsigned long)dev_priv->stolen_base + 125 psbfb->gtt->offset; 126 127 page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; 128 address = (unsigned long)vmf->virtual_address - (vmf->pgoff << PAGE_SHIFT); 129 130 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 131 132 for (i = 0; i < page_num; i++) { 133 pfn = (phys_addr >> PAGE_SHIFT); 134 135 ret = vm_insert_mixed(vma, address, pfn); 136 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0))) 137 break; 138 else if (unlikely(ret != 0)) { 139 ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS; 140 return ret; 141 } 142 address += PAGE_SIZE; 143 phys_addr += PAGE_SIZE; 144 } 145 return VM_FAULT_NOPAGE; 146 } 147 148 static void psbfb_vm_open(struct vm_area_struct *vma) 149 { 150 } 151 152 static void psbfb_vm_close(struct vm_area_struct *vma) 153 { 154 } 155 156 static const struct vm_operations_struct psbfb_vm_ops = { 157 .fault = psbfb_vm_fault, 158 .open = psbfb_vm_open, 159 .close = psbfb_vm_close 160 }; 161 162 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma) 163 { 164 struct psb_fbdev *fbdev = info->par; 165 struct psb_framebuffer *psbfb = &fbdev->pfb; 166 167 if (vma->vm_pgoff != 0) 168 return -EINVAL; 169 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) 170 return -EINVAL; 171 172 if (!psbfb->addr_space) 173 psbfb->addr_space = vma->vm_file->f_mapping; 174 /* 175 * If this is a GEM object then info->screen_base is the virtual 176 * kernel remapping of the object. FIXME: Review if this is 177 * suitable for our mmap work 178 */ 179 vma->vm_ops = &psbfb_vm_ops; 180 vma->vm_private_data = (void *)psbfb; 181 vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP; 182 return 0; 183 } 184 185 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd, 186 unsigned long arg) 187 { 188 return -ENOTTY; 189 } 190 191 static struct fb_ops psbfb_ops = { 192 .owner = THIS_MODULE, 193 .fb_check_var = drm_fb_helper_check_var, 194 .fb_set_par = drm_fb_helper_set_par, 195 .fb_blank = drm_fb_helper_blank, 196 .fb_setcolreg = psbfb_setcolreg, 197 .fb_fillrect = drm_fb_helper_cfb_fillrect, 198 .fb_copyarea = psbfb_copyarea, 199 .fb_imageblit = drm_fb_helper_cfb_imageblit, 200 .fb_mmap = psbfb_mmap, 201 .fb_sync = psbfb_sync, 202 .fb_ioctl = psbfb_ioctl, 203 }; 204 205 static struct fb_ops psbfb_roll_ops = { 206 .owner = THIS_MODULE, 207 .fb_check_var = drm_fb_helper_check_var, 208 .fb_set_par = drm_fb_helper_set_par, 209 .fb_blank = drm_fb_helper_blank, 210 .fb_setcolreg = psbfb_setcolreg, 211 .fb_fillrect = drm_fb_helper_cfb_fillrect, 212 .fb_copyarea = drm_fb_helper_cfb_copyarea, 213 .fb_imageblit = drm_fb_helper_cfb_imageblit, 214 .fb_pan_display = psbfb_pan, 215 .fb_mmap = psbfb_mmap, 216 .fb_ioctl = psbfb_ioctl, 217 }; 218 219 static struct fb_ops psbfb_unaccel_ops = { 220 .owner = THIS_MODULE, 221 .fb_check_var = drm_fb_helper_check_var, 222 .fb_set_par = drm_fb_helper_set_par, 223 .fb_blank = drm_fb_helper_blank, 224 .fb_setcolreg = psbfb_setcolreg, 225 .fb_fillrect = drm_fb_helper_cfb_fillrect, 226 .fb_copyarea = drm_fb_helper_cfb_copyarea, 227 .fb_imageblit = drm_fb_helper_cfb_imageblit, 228 .fb_mmap = psbfb_mmap, 229 .fb_ioctl = psbfb_ioctl, 230 }; 231 232 /** 233 * psb_framebuffer_init - initialize a framebuffer 234 * @dev: our DRM device 235 * @fb: framebuffer to set up 236 * @mode_cmd: mode description 237 * @gt: backing object 238 * 239 * Configure and fill in the boilerplate for our frame buffer. Return 240 * 0 on success or an error code if we fail. 241 */ 242 static int psb_framebuffer_init(struct drm_device *dev, 243 struct psb_framebuffer *fb, 244 struct drm_mode_fb_cmd2 *mode_cmd, 245 struct gtt_range *gt) 246 { 247 u32 bpp, depth; 248 int ret; 249 250 drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); 251 252 if (mode_cmd->pitches[0] & 63) 253 return -EINVAL; 254 switch (bpp) { 255 case 8: 256 case 16: 257 case 24: 258 case 32: 259 break; 260 default: 261 return -EINVAL; 262 } 263 drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd); 264 fb->gtt = gt; 265 ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs); 266 if (ret) { 267 dev_err(dev->dev, "framebuffer init failed: %d\n", ret); 268 return ret; 269 } 270 return 0; 271 } 272 273 /** 274 * psb_framebuffer_create - create a framebuffer backed by gt 275 * @dev: our DRM device 276 * @mode_cmd: the description of the requested mode 277 * @gt: the backing object 278 * 279 * Create a framebuffer object backed by the gt, and fill in the 280 * boilerplate required 281 * 282 * TODO: review object references 283 */ 284 285 static struct drm_framebuffer *psb_framebuffer_create 286 (struct drm_device *dev, 287 struct drm_mode_fb_cmd2 *mode_cmd, 288 struct gtt_range *gt) 289 { 290 struct psb_framebuffer *fb; 291 int ret; 292 293 fb = kzalloc(sizeof(*fb), GFP_KERNEL); 294 if (!fb) 295 return ERR_PTR(-ENOMEM); 296 297 ret = psb_framebuffer_init(dev, fb, mode_cmd, gt); 298 if (ret) { 299 kfree(fb); 300 return ERR_PTR(ret); 301 } 302 return &fb->base; 303 } 304 305 /** 306 * psbfb_alloc - allocate frame buffer memory 307 * @dev: the DRM device 308 * @aligned_size: space needed 309 * @force: fall back to GEM buffers if need be 310 * 311 * Allocate the frame buffer. In the usual case we get a GTT range that 312 * is stolen memory backed and life is simple. If there isn't sufficient 313 * we fail as we don't have the virtual mapping space to really vmap it 314 * and the kernel console code can't handle non linear framebuffers. 315 * 316 * Re-address this as and if the framebuffer layer grows this ability. 317 */ 318 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size) 319 { 320 struct gtt_range *backing; 321 /* Begin by trying to use stolen memory backing */ 322 backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1, PAGE_SIZE); 323 if (backing) { 324 drm_gem_private_object_init(dev, &backing->gem, aligned_size); 325 return backing; 326 } 327 return NULL; 328 } 329 330 /** 331 * psbfb_create - create a framebuffer 332 * @fbdev: the framebuffer device 333 * @sizes: specification of the layout 334 * 335 * Create a framebuffer to the specifications provided 336 */ 337 static int psbfb_create(struct psb_fbdev *fbdev, 338 struct drm_fb_helper_surface_size *sizes) 339 { 340 struct drm_device *dev = fbdev->psb_fb_helper.dev; 341 struct drm_psb_private *dev_priv = dev->dev_private; 342 struct fb_info *info; 343 struct drm_framebuffer *fb; 344 struct psb_framebuffer *psbfb = &fbdev->pfb; 345 struct drm_mode_fb_cmd2 mode_cmd; 346 int size; 347 int ret; 348 struct gtt_range *backing; 349 u32 bpp, depth; 350 int gtt_roll = 0; 351 int pitch_lines = 0; 352 353 mode_cmd.width = sizes->surface_width; 354 mode_cmd.height = sizes->surface_height; 355 bpp = sizes->surface_bpp; 356 depth = sizes->surface_depth; 357 358 /* No 24bit packed */ 359 if (bpp == 24) 360 bpp = 32; 361 362 do { 363 /* 364 * Acceleration via the GTT requires pitch to be 365 * power of two aligned. Preferably page but less 366 * is ok with some fonts 367 */ 368 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines); 369 370 size = mode_cmd.pitches[0] * mode_cmd.height; 371 size = ALIGN(size, PAGE_SIZE); 372 373 /* Allocate the fb in the GTT with stolen page backing */ 374 backing = psbfb_alloc(dev, size); 375 376 if (pitch_lines) 377 pitch_lines *= 2; 378 else 379 pitch_lines = 1; 380 gtt_roll++; 381 } while (backing == NULL && pitch_lines <= 16); 382 383 /* The final pitch we accepted if we succeeded */ 384 pitch_lines /= 2; 385 386 if (backing == NULL) { 387 /* 388 * We couldn't get the space we wanted, fall back to the 389 * display engine requirement instead. The HW requires 390 * the pitch to be 64 byte aligned 391 */ 392 393 gtt_roll = 0; /* Don't use GTT accelerated scrolling */ 394 pitch_lines = 64; 395 396 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64); 397 398 size = mode_cmd.pitches[0] * mode_cmd.height; 399 size = ALIGN(size, PAGE_SIZE); 400 401 /* Allocate the framebuffer in the GTT with stolen page backing */ 402 backing = psbfb_alloc(dev, size); 403 if (backing == NULL) 404 return -ENOMEM; 405 } 406 407 memset(dev_priv->vram_addr + backing->offset, 0, size); 408 409 mutex_lock(&dev->struct_mutex); 410 411 info = drm_fb_helper_alloc_fbi(&fbdev->psb_fb_helper); 412 if (IS_ERR(info)) { 413 ret = PTR_ERR(info); 414 goto out_err1; 415 } 416 info->par = fbdev; 417 418 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth); 419 420 ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing); 421 if (ret) 422 goto out_unref; 423 424 fb = &psbfb->base; 425 psbfb->fbdev = info; 426 427 fbdev->psb_fb_helper.fb = fb; 428 429 drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); 430 strcpy(info->fix.id, "psbdrmfb"); 431 432 info->flags = FBINFO_DEFAULT; 433 if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */ 434 info->fbops = &psbfb_ops; 435 else if (gtt_roll) { /* GTT rolling seems best */ 436 info->fbops = &psbfb_roll_ops; 437 info->flags |= FBINFO_HWACCEL_YPAN; 438 } else /* Software */ 439 info->fbops = &psbfb_unaccel_ops; 440 441 info->fix.smem_start = dev->mode_config.fb_base; 442 info->fix.smem_len = size; 443 info->fix.ywrapstep = gtt_roll; 444 info->fix.ypanstep = 0; 445 446 /* Accessed stolen memory directly */ 447 info->screen_base = dev_priv->vram_addr + backing->offset; 448 info->screen_size = size; 449 450 if (dev_priv->gtt.stolen_size) { 451 info->apertures->ranges[0].base = dev->mode_config.fb_base; 452 info->apertures->ranges[0].size = dev_priv->gtt.stolen_size; 453 } 454 455 drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper, 456 sizes->fb_width, sizes->fb_height); 457 458 info->fix.mmio_start = pci_resource_start(dev->pdev, 0); 459 info->fix.mmio_len = pci_resource_len(dev->pdev, 0); 460 461 /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ 462 463 dev_dbg(dev->dev, "allocated %dx%d fb\n", 464 psbfb->base.width, psbfb->base.height); 465 466 mutex_unlock(&dev->struct_mutex); 467 return 0; 468 out_unref: 469 if (backing->stolen) 470 psb_gtt_free_range(dev, backing); 471 else 472 drm_gem_object_unreference(&backing->gem); 473 474 drm_fb_helper_release_fbi(&fbdev->psb_fb_helper); 475 out_err1: 476 mutex_unlock(&dev->struct_mutex); 477 psb_gtt_free_range(dev, backing); 478 return ret; 479 } 480 481 /** 482 * psb_user_framebuffer_create - create framebuffer 483 * @dev: our DRM device 484 * @filp: client file 485 * @cmd: mode request 486 * 487 * Create a new framebuffer backed by a userspace GEM object 488 */ 489 static struct drm_framebuffer *psb_user_framebuffer_create 490 (struct drm_device *dev, struct drm_file *filp, 491 struct drm_mode_fb_cmd2 *cmd) 492 { 493 struct gtt_range *r; 494 struct drm_gem_object *obj; 495 496 /* 497 * Find the GEM object and thus the gtt range object that is 498 * to back this space 499 */ 500 obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]); 501 if (obj == NULL) 502 return ERR_PTR(-ENOENT); 503 504 /* Let the core code do all the work */ 505 r = container_of(obj, struct gtt_range, gem); 506 return psb_framebuffer_create(dev, cmd, r); 507 } 508 509 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, 510 u16 blue, int regno) 511 { 512 struct gma_crtc *gma_crtc = to_gma_crtc(crtc); 513 514 gma_crtc->lut_r[regno] = red >> 8; 515 gma_crtc->lut_g[regno] = green >> 8; 516 gma_crtc->lut_b[regno] = blue >> 8; 517 } 518 519 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red, 520 u16 *green, u16 *blue, int regno) 521 { 522 struct gma_crtc *gma_crtc = to_gma_crtc(crtc); 523 524 *red = gma_crtc->lut_r[regno] << 8; 525 *green = gma_crtc->lut_g[regno] << 8; 526 *blue = gma_crtc->lut_b[regno] << 8; 527 } 528 529 static int psbfb_probe(struct drm_fb_helper *helper, 530 struct drm_fb_helper_surface_size *sizes) 531 { 532 struct psb_fbdev *psb_fbdev = 533 container_of(helper, struct psb_fbdev, psb_fb_helper); 534 struct drm_device *dev = psb_fbdev->psb_fb_helper.dev; 535 struct drm_psb_private *dev_priv = dev->dev_private; 536 int bytespp; 537 538 bytespp = sizes->surface_bpp / 8; 539 if (bytespp == 3) /* no 24bit packed */ 540 bytespp = 4; 541 542 /* If the mode will not fit in 32bit then switch to 16bit to get 543 a console on full resolution. The X mode setting server will 544 allocate its own 32bit GEM framebuffer */ 545 if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height > 546 dev_priv->vram_stolen_size) { 547 sizes->surface_bpp = 16; 548 sizes->surface_depth = 16; 549 } 550 551 return psbfb_create(psb_fbdev, sizes); 552 } 553 554 static const struct drm_fb_helper_funcs psb_fb_helper_funcs = { 555 .gamma_set = psbfb_gamma_set, 556 .gamma_get = psbfb_gamma_get, 557 .fb_probe = psbfb_probe, 558 }; 559 560 static int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev) 561 { 562 struct psb_framebuffer *psbfb = &fbdev->pfb; 563 564 drm_fb_helper_unregister_fbi(&fbdev->psb_fb_helper); 565 drm_fb_helper_release_fbi(&fbdev->psb_fb_helper); 566 567 drm_fb_helper_fini(&fbdev->psb_fb_helper); 568 drm_framebuffer_unregister_private(&psbfb->base); 569 drm_framebuffer_cleanup(&psbfb->base); 570 571 if (psbfb->gtt) 572 drm_gem_object_unreference(&psbfb->gtt->gem); 573 return 0; 574 } 575 576 int psb_fbdev_init(struct drm_device *dev) 577 { 578 struct psb_fbdev *fbdev; 579 struct drm_psb_private *dev_priv = dev->dev_private; 580 int ret; 581 582 fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL); 583 if (!fbdev) { 584 dev_err(dev->dev, "no memory\n"); 585 return -ENOMEM; 586 } 587 588 dev_priv->fbdev = fbdev; 589 590 drm_fb_helper_prepare(dev, &fbdev->psb_fb_helper, &psb_fb_helper_funcs); 591 592 ret = drm_fb_helper_init(dev, &fbdev->psb_fb_helper, 593 dev_priv->ops->crtcs, INTELFB_CONN_LIMIT); 594 if (ret) 595 goto free; 596 597 ret = drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper); 598 if (ret) 599 goto fini; 600 601 /* disable all the possible outputs/crtcs before entering KMS mode */ 602 drm_helper_disable_unused_functions(dev); 603 604 ret = drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32); 605 if (ret) 606 goto fini; 607 608 return 0; 609 610 fini: 611 drm_fb_helper_fini(&fbdev->psb_fb_helper); 612 free: 613 kfree(fbdev); 614 return ret; 615 } 616 617 static void psb_fbdev_fini(struct drm_device *dev) 618 { 619 struct drm_psb_private *dev_priv = dev->dev_private; 620 621 if (!dev_priv->fbdev) 622 return; 623 624 psb_fbdev_destroy(dev, dev_priv->fbdev); 625 kfree(dev_priv->fbdev); 626 dev_priv->fbdev = NULL; 627 } 628 629 static void psbfb_output_poll_changed(struct drm_device *dev) 630 { 631 struct drm_psb_private *dev_priv = dev->dev_private; 632 struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev; 633 drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper); 634 } 635 636 /** 637 * psb_user_framebuffer_create_handle - add hamdle to a framebuffer 638 * @fb: framebuffer 639 * @file_priv: our DRM file 640 * @handle: returned handle 641 * 642 * Our framebuffer object is a GTT range which also contains a GEM 643 * object. We need to turn it into a handle for userspace. GEM will do 644 * the work for us 645 */ 646 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb, 647 struct drm_file *file_priv, 648 unsigned int *handle) 649 { 650 struct psb_framebuffer *psbfb = to_psb_fb(fb); 651 struct gtt_range *r = psbfb->gtt; 652 return drm_gem_handle_create(file_priv, &r->gem, handle); 653 } 654 655 /** 656 * psb_user_framebuffer_destroy - destruct user created fb 657 * @fb: framebuffer 658 * 659 * User framebuffers are backed by GEM objects so all we have to do is 660 * clean up a bit and drop the reference, GEM will handle the fallout 661 */ 662 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb) 663 { 664 struct psb_framebuffer *psbfb = to_psb_fb(fb); 665 struct gtt_range *r = psbfb->gtt; 666 667 /* Let DRM do its clean up */ 668 drm_framebuffer_cleanup(fb); 669 /* We are no longer using the resource in GEM */ 670 drm_gem_object_unreference_unlocked(&r->gem); 671 kfree(fb); 672 } 673 674 static const struct drm_mode_config_funcs psb_mode_funcs = { 675 .fb_create = psb_user_framebuffer_create, 676 .output_poll_changed = psbfb_output_poll_changed, 677 }; 678 679 static int psb_create_backlight_property(struct drm_device *dev) 680 { 681 struct drm_psb_private *dev_priv = dev->dev_private; 682 struct drm_property *backlight; 683 684 if (dev_priv->backlight_property) 685 return 0; 686 687 backlight = drm_property_create_range(dev, 0, "backlight", 0, 100); 688 689 dev_priv->backlight_property = backlight; 690 691 return 0; 692 } 693 694 static void psb_setup_outputs(struct drm_device *dev) 695 { 696 struct drm_psb_private *dev_priv = dev->dev_private; 697 struct drm_connector *connector; 698 699 drm_mode_create_scaling_mode_property(dev); 700 psb_create_backlight_property(dev); 701 702 dev_priv->ops->output_init(dev); 703 704 list_for_each_entry(connector, &dev->mode_config.connector_list, 705 head) { 706 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 707 struct drm_encoder *encoder = &gma_encoder->base; 708 int crtc_mask = 0, clone_mask = 0; 709 710 /* valid crtcs */ 711 switch (gma_encoder->type) { 712 case INTEL_OUTPUT_ANALOG: 713 crtc_mask = (1 << 0); 714 clone_mask = (1 << INTEL_OUTPUT_ANALOG); 715 break; 716 case INTEL_OUTPUT_SDVO: 717 crtc_mask = dev_priv->ops->sdvo_mask; 718 clone_mask = (1 << INTEL_OUTPUT_SDVO); 719 break; 720 case INTEL_OUTPUT_LVDS: 721 crtc_mask = dev_priv->ops->lvds_mask; 722 clone_mask = (1 << INTEL_OUTPUT_LVDS); 723 break; 724 case INTEL_OUTPUT_MIPI: 725 crtc_mask = (1 << 0); 726 clone_mask = (1 << INTEL_OUTPUT_MIPI); 727 break; 728 case INTEL_OUTPUT_MIPI2: 729 crtc_mask = (1 << 2); 730 clone_mask = (1 << INTEL_OUTPUT_MIPI2); 731 break; 732 case INTEL_OUTPUT_HDMI: 733 crtc_mask = dev_priv->ops->hdmi_mask; 734 clone_mask = (1 << INTEL_OUTPUT_HDMI); 735 break; 736 case INTEL_OUTPUT_DISPLAYPORT: 737 crtc_mask = (1 << 0) | (1 << 1); 738 clone_mask = (1 << INTEL_OUTPUT_DISPLAYPORT); 739 break; 740 case INTEL_OUTPUT_EDP: 741 crtc_mask = (1 << 1); 742 clone_mask = (1 << INTEL_OUTPUT_EDP); 743 } 744 encoder->possible_crtcs = crtc_mask; 745 encoder->possible_clones = 746 gma_connector_clones(dev, clone_mask); 747 } 748 } 749 750 void psb_modeset_init(struct drm_device *dev) 751 { 752 struct drm_psb_private *dev_priv = dev->dev_private; 753 struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; 754 int i; 755 756 drm_mode_config_init(dev); 757 758 dev->mode_config.min_width = 0; 759 dev->mode_config.min_height = 0; 760 761 dev->mode_config.funcs = &psb_mode_funcs; 762 763 /* set memory base */ 764 /* Oaktrail and Poulsbo should use BAR 2*/ 765 pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *) 766 &(dev->mode_config.fb_base)); 767 768 /* num pipes is 2 for PSB but 1 for Mrst */ 769 for (i = 0; i < dev_priv->num_pipe; i++) 770 psb_intel_crtc_init(dev, i, mode_dev); 771 772 dev->mode_config.max_width = 4096; 773 dev->mode_config.max_height = 4096; 774 775 psb_setup_outputs(dev); 776 777 if (dev_priv->ops->errata) 778 dev_priv->ops->errata(dev); 779 780 dev_priv->modeset = true; 781 } 782 783 void psb_modeset_cleanup(struct drm_device *dev) 784 { 785 struct drm_psb_private *dev_priv = dev->dev_private; 786 if (dev_priv->modeset) { 787 mutex_lock(&dev->struct_mutex); 788 789 drm_kms_helper_poll_fini(dev); 790 psb_fbdev_fini(dev); 791 drm_mode_config_cleanup(dev); 792 793 mutex_unlock(&dev->struct_mutex); 794 } 795 } 796