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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * linux/drivers/video/omap2/omapfb-ioctl.c4 *5 * Copyright (C) 2008 Nokia Corporation6 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>7 *8 * Some code and ideas taken from drivers/video/omap/ driver9 * by Imre Deak.10 */11 12#include <linux/fb.h>13#include <linux/device.h>14#include <linux/uaccess.h>15#include <linux/platform_device.h>16#include <linux/mm.h>17#include <linux/omapfb.h>18#include <linux/vmalloc.h>19#include <linux/export.h>20#include <linux/sizes.h>21 22#include <video/omapfb_dss.h>23#include <video/omapvrfb.h>24 25#include "omapfb.h"26 27static u8 get_mem_idx(struct omapfb_info *ofbi)28{29 if (ofbi->id == ofbi->region->id)30 return 0;31 32 return OMAPFB_MEM_IDX_ENABLED | ofbi->region->id;33}34 35static struct omapfb2_mem_region *get_mem_region(struct omapfb_info *ofbi,36 u8 mem_idx)37{38 struct omapfb2_device *fbdev = ofbi->fbdev;39 40 if (mem_idx & OMAPFB_MEM_IDX_ENABLED)41 mem_idx &= OMAPFB_MEM_IDX_MASK;42 else43 mem_idx = ofbi->id;44 45 if (mem_idx >= fbdev->num_fbs)46 return NULL;47 48 return &fbdev->regions[mem_idx];49}50 51static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)52{53 struct omapfb_info *ofbi = FB2OFB(fbi);54 struct omapfb2_device *fbdev = ofbi->fbdev;55 struct omap_overlay *ovl;56 struct omap_overlay_info old_info;57 struct omapfb2_mem_region *old_rg, *new_rg;58 int r = 0;59 60 DBG("omapfb_setup_plane\n");61 62 if (ofbi->num_overlays == 0) {63 r = -EINVAL;64 goto out;65 }66 67 /* XXX uses only the first overlay */68 ovl = ofbi->overlays[0];69 70 old_rg = ofbi->region;71 new_rg = get_mem_region(ofbi, pi->mem_idx);72 if (!new_rg) {73 r = -EINVAL;74 goto out;75 }76 77 /* Take the locks in a specific order to keep lockdep happy */78 if (old_rg->id < new_rg->id) {79 omapfb_get_mem_region(old_rg);80 omapfb_get_mem_region(new_rg);81 } else if (new_rg->id < old_rg->id) {82 omapfb_get_mem_region(new_rg);83 omapfb_get_mem_region(old_rg);84 } else85 omapfb_get_mem_region(old_rg);86 87 if (pi->enabled && !new_rg->size) {88 /*89 * This plane's memory was freed, can't enable it90 * until it's reallocated.91 */92 r = -EINVAL;93 goto put_mem;94 }95 96 ovl->get_overlay_info(ovl, &old_info);97 98 if (old_rg != new_rg) {99 ofbi->region = new_rg;100 set_fb_fix(fbi);101 }102 103 if (!pi->enabled) {104 r = ovl->disable(ovl);105 if (r)106 goto undo;107 }108 109 if (pi->enabled) {110 r = omapfb_setup_overlay(fbi, ovl, pi->pos_x, pi->pos_y,111 pi->out_width, pi->out_height);112 if (r)113 goto undo;114 } else {115 struct omap_overlay_info info;116 117 ovl->get_overlay_info(ovl, &info);118 119 info.pos_x = pi->pos_x;120 info.pos_y = pi->pos_y;121 info.out_width = pi->out_width;122 info.out_height = pi->out_height;123 124 r = ovl->set_overlay_info(ovl, &info);125 if (r)126 goto undo;127 }128 129 if (ovl->manager) {130 r = ovl->manager->apply(ovl->manager);131 if (r)132 goto undo;133 }134 135 if (pi->enabled) {136 r = ovl->enable(ovl);137 if (r)138 goto undo;139 }140 141 /* Release the locks in a specific order to keep lockdep happy */142 if (old_rg->id > new_rg->id) {143 omapfb_put_mem_region(old_rg);144 omapfb_put_mem_region(new_rg);145 } else if (new_rg->id > old_rg->id) {146 omapfb_put_mem_region(new_rg);147 omapfb_put_mem_region(old_rg);148 } else149 omapfb_put_mem_region(old_rg);150 151 return 0;152 153 undo:154 if (old_rg != new_rg) {155 ofbi->region = old_rg;156 set_fb_fix(fbi);157 }158 159 ovl->set_overlay_info(ovl, &old_info);160 put_mem:161 /* Release the locks in a specific order to keep lockdep happy */162 if (old_rg->id > new_rg->id) {163 omapfb_put_mem_region(old_rg);164 omapfb_put_mem_region(new_rg);165 } else if (new_rg->id > old_rg->id) {166 omapfb_put_mem_region(new_rg);167 omapfb_put_mem_region(old_rg);168 } else169 omapfb_put_mem_region(old_rg);170 out:171 dev_err(fbdev->dev, "setup_plane failed\n");172 173 return r;174}175 176static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)177{178 struct omapfb_info *ofbi = FB2OFB(fbi);179 180 if (ofbi->num_overlays == 0) {181 memset(pi, 0, sizeof(*pi));182 } else {183 struct omap_overlay *ovl;184 struct omap_overlay_info ovli;185 186 ovl = ofbi->overlays[0];187 ovl->get_overlay_info(ovl, &ovli);188 189 pi->pos_x = ovli.pos_x;190 pi->pos_y = ovli.pos_y;191 pi->enabled = ovl->is_enabled(ovl);192 pi->channel_out = 0; /* xxx */193 pi->mirror = 0;194 pi->mem_idx = get_mem_idx(ofbi);195 pi->out_width = ovli.out_width;196 pi->out_height = ovli.out_height;197 }198 199 return 0;200}201 202static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)203{204 struct omapfb_info *ofbi = FB2OFB(fbi);205 struct omapfb2_device *fbdev = ofbi->fbdev;206 struct omap_dss_device *display = fb2display(fbi);207 struct omapfb2_mem_region *rg;208 int r = 0, i;209 size_t size;210 211 if (mi->type != OMAPFB_MEMTYPE_SDRAM)212 return -EINVAL;213 214 size = PAGE_ALIGN(mi->size);215 216 if (display && display->driver->sync)217 display->driver->sync(display);218 219 rg = ofbi->region;220 221 down_write_nested(&rg->lock, rg->id);222 atomic_inc(&rg->lock_count);223 224 if (rg->size == size && rg->type == mi->type)225 goto out;226 227 if (atomic_read(&rg->map_count)) {228 r = -EBUSY;229 goto out;230 }231 232 for (i = 0; i < fbdev->num_fbs; i++) {233 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);234 int j;235 236 if (ofbi2->region != rg)237 continue;238 239 for (j = 0; j < ofbi2->num_overlays; j++) {240 struct omap_overlay *ovl;241 ovl = ofbi2->overlays[j];242 if (ovl->is_enabled(ovl)) {243 r = -EBUSY;244 goto out;245 }246 }247 }248 249 r = omapfb_realloc_fbmem(fbi, size, mi->type);250 if (r) {251 dev_err(fbdev->dev, "realloc fbmem failed\n");252 goto out;253 }254 255 out:256 atomic_dec(&rg->lock_count);257 up_write(&rg->lock);258 259 return r;260}261 262static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)263{264 struct omapfb_info *ofbi = FB2OFB(fbi);265 struct omapfb2_mem_region *rg;266 267 rg = omapfb_get_mem_region(ofbi->region);268 memset(mi, 0, sizeof(*mi));269 270 mi->size = rg->size;271 mi->type = rg->type;272 273 omapfb_put_mem_region(rg);274 275 return 0;276}277 278static int omapfb_update_window(struct fb_info *fbi,279 u32 x, u32 y, u32 w, u32 h)280{281 struct omap_dss_device *display = fb2display(fbi);282 u16 dw, dh;283 284 if (!display)285 return 0;286 287 if (w == 0 || h == 0)288 return 0;289 290 display->driver->get_resolution(display, &dw, &dh);291 292 if (x + w > dw || y + h > dh)293 return -EINVAL;294 295 return display->driver->update(display, x, y, w, h);296}297 298int omapfb_set_update_mode(struct fb_info *fbi,299 enum omapfb_update_mode mode)300{301 struct omap_dss_device *display = fb2display(fbi);302 struct omapfb_info *ofbi = FB2OFB(fbi);303 struct omapfb2_device *fbdev = ofbi->fbdev;304 struct omapfb_display_data *d;305 int r;306 307 if (!display)308 return -EINVAL;309 310 if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)311 return -EINVAL;312 313 omapfb_lock(fbdev);314 315 d = get_display_data(fbdev, display);316 317 if (d->update_mode == mode) {318 omapfb_unlock(fbdev);319 return 0;320 }321 322 r = 0;323 324 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {325 if (mode == OMAPFB_AUTO_UPDATE)326 omapfb_start_auto_update(fbdev, display);327 else /* MANUAL_UPDATE */328 omapfb_stop_auto_update(fbdev, display);329 330 d->update_mode = mode;331 } else { /* AUTO_UPDATE */332 if (mode == OMAPFB_MANUAL_UPDATE)333 r = -EINVAL;334 }335 336 omapfb_unlock(fbdev);337 338 return r;339}340 341int omapfb_get_update_mode(struct fb_info *fbi,342 enum omapfb_update_mode *mode)343{344 struct omap_dss_device *display = fb2display(fbi);345 struct omapfb_info *ofbi = FB2OFB(fbi);346 struct omapfb2_device *fbdev = ofbi->fbdev;347 struct omapfb_display_data *d;348 349 if (!display)350 return -EINVAL;351 352 omapfb_lock(fbdev);353 354 d = get_display_data(fbdev, display);355 356 *mode = d->update_mode;357 358 omapfb_unlock(fbdev);359 360 return 0;361}362 363/* XXX this color key handling is a hack... */364static struct omapfb_color_key omapfb_color_keys[2];365 366static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,367 struct omapfb_color_key *ck)368{369 struct omap_overlay_manager_info info;370 enum omap_dss_trans_key_type kt;371 int r;372 373 mgr->get_manager_info(mgr, &info);374 375 if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {376 info.trans_enabled = false;377 omapfb_color_keys[mgr->id] = *ck;378 379 r = mgr->set_manager_info(mgr, &info);380 if (r)381 return r;382 383 r = mgr->apply(mgr);384 385 return r;386 }387 388 switch (ck->key_type) {389 case OMAPFB_COLOR_KEY_GFX_DST:390 kt = OMAP_DSS_COLOR_KEY_GFX_DST;391 break;392 case OMAPFB_COLOR_KEY_VID_SRC:393 kt = OMAP_DSS_COLOR_KEY_VID_SRC;394 break;395 default:396 return -EINVAL;397 }398 399 info.default_color = ck->background;400 info.trans_key = ck->trans_key;401 info.trans_key_type = kt;402 info.trans_enabled = true;403 404 omapfb_color_keys[mgr->id] = *ck;405 406 r = mgr->set_manager_info(mgr, &info);407 if (r)408 return r;409 410 r = mgr->apply(mgr);411 412 return r;413}414 415static int omapfb_set_color_key(struct fb_info *fbi,416 struct omapfb_color_key *ck)417{418 struct omapfb_info *ofbi = FB2OFB(fbi);419 struct omapfb2_device *fbdev = ofbi->fbdev;420 int r;421 int i;422 struct omap_overlay_manager *mgr = NULL;423 424 omapfb_lock(fbdev);425 426 for (i = 0; i < ofbi->num_overlays; i++) {427 if (ofbi->overlays[i]->manager) {428 mgr = ofbi->overlays[i]->manager;429 break;430 }431 }432 433 if (!mgr) {434 r = -EINVAL;435 goto err;436 }437 438 r = _omapfb_set_color_key(mgr, ck);439err:440 omapfb_unlock(fbdev);441 442 return r;443}444 445static int omapfb_get_color_key(struct fb_info *fbi,446 struct omapfb_color_key *ck)447{448 struct omapfb_info *ofbi = FB2OFB(fbi);449 struct omapfb2_device *fbdev = ofbi->fbdev;450 struct omap_overlay_manager *mgr = NULL;451 int r = 0;452 int i;453 454 omapfb_lock(fbdev);455 456 for (i = 0; i < ofbi->num_overlays; i++) {457 if (ofbi->overlays[i]->manager) {458 mgr = ofbi->overlays[i]->manager;459 break;460 }461 }462 463 if (!mgr) {464 r = -EINVAL;465 goto err;466 }467 468 *ck = omapfb_color_keys[mgr->id];469err:470 omapfb_unlock(fbdev);471 472 return r;473}474 475static int omapfb_memory_read(struct fb_info *fbi,476 struct omapfb_memory_read *mr)477{478 struct omap_dss_device *display = fb2display(fbi);479 void *buf;480 int r;481 482 if (!display || !display->driver->memory_read)483 return -ENOENT;484 485 if (mr->w > 4096 || mr->h > 4096)486 return -EINVAL;487 488 if (mr->w * mr->h * 3 > mr->buffer_size)489 return -EINVAL;490 491 buf = vmalloc(mr->buffer_size);492 if (!buf) {493 DBG("vmalloc failed\n");494 return -ENOMEM;495 }496 497 r = display->driver->memory_read(display, buf, mr->buffer_size,498 mr->x, mr->y, mr->w, mr->h);499 500 if (r > 0) {501 if (copy_to_user(mr->buffer, buf, r))502 r = -EFAULT;503 }504 505 vfree(buf);506 507 return r;508}509 510static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,511 struct omapfb_ovl_colormode *mode)512{513 int ovl_idx = mode->overlay_idx;514 int mode_idx = mode->mode_idx;515 struct omap_overlay *ovl;516 enum omap_color_mode supported_modes;517 struct fb_var_screeninfo var;518 int i;519 520 if (ovl_idx >= fbdev->num_overlays)521 return -ENODEV;522 ovl = fbdev->overlays[ovl_idx];523 supported_modes = ovl->supported_modes;524 525 mode_idx = mode->mode_idx;526 527 for (i = 0; i < sizeof(supported_modes) * 8; i++) {528 if (!(supported_modes & (1 << i)))529 continue;530 /*531 * It's possible that the FB doesn't support a mode532 * that is supported by the overlay, so call the533 * following here.534 */535 if (dss_mode_to_fb_mode(1 << i, &var) < 0)536 continue;537 538 mode_idx--;539 if (mode_idx < 0)540 break;541 }542 543 if (i == sizeof(supported_modes) * 8)544 return -ENOENT;545 546 mode->bits_per_pixel = var.bits_per_pixel;547 mode->nonstd = var.nonstd;548 mode->red = var.red;549 mode->green = var.green;550 mode->blue = var.blue;551 mode->transp = var.transp;552 553 return 0;554}555 556static int omapfb_wait_for_go(struct fb_info *fbi)557{558 struct omapfb_info *ofbi = FB2OFB(fbi);559 int r = 0;560 int i;561 562 for (i = 0; i < ofbi->num_overlays; ++i) {563 struct omap_overlay *ovl = ofbi->overlays[i];564 r = ovl->wait_for_go(ovl);565 if (r)566 break;567 }568 569 return r;570}571 572int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)573{574 struct omapfb_info *ofbi = FB2OFB(fbi);575 struct omapfb2_device *fbdev = ofbi->fbdev;576 struct omap_dss_device *display = fb2display(fbi);577 struct omap_overlay_manager *mgr;578 579 union {580 struct omapfb_update_window_old uwnd_o;581 struct omapfb_update_window uwnd;582 struct omapfb_plane_info plane_info;583 struct omapfb_caps caps;584 struct omapfb_mem_info mem_info;585 struct omapfb_color_key color_key;586 struct omapfb_ovl_colormode ovl_colormode;587 enum omapfb_update_mode update_mode;588 int test_num;589 struct omapfb_memory_read memory_read;590 struct omapfb_vram_info vram_info;591 struct omapfb_tearsync_info tearsync_info;592 struct omapfb_display_info display_info;593 u32 crt;594 } p;595 596 int r = 0;597 598 memset(&p, 0, sizeof(p));599 600 switch (cmd) {601 case OMAPFB_SYNC_GFX:602 DBG("ioctl SYNC_GFX\n");603 if (!display || !display->driver->sync) {604 /* DSS1 never returns an error here, so we neither */605 /*r = -EINVAL;*/606 break;607 }608 609 r = display->driver->sync(display);610 break;611 612 case OMAPFB_UPDATE_WINDOW_OLD:613 DBG("ioctl UPDATE_WINDOW_OLD\n");614 if (!display || !display->driver->update) {615 r = -EINVAL;616 break;617 }618 619 if (copy_from_user(&p.uwnd_o,620 (void __user *)arg,621 sizeof(p.uwnd_o))) {622 r = -EFAULT;623 break;624 }625 626 r = omapfb_update_window(fbi, p.uwnd_o.x, p.uwnd_o.y,627 p.uwnd_o.width, p.uwnd_o.height);628 break;629 630 case OMAPFB_UPDATE_WINDOW:631 DBG("ioctl UPDATE_WINDOW\n");632 if (!display || !display->driver->update) {633 r = -EINVAL;634 break;635 }636 637 if (copy_from_user(&p.uwnd, (void __user *)arg,638 sizeof(p.uwnd))) {639 r = -EFAULT;640 break;641 }642 643 r = omapfb_update_window(fbi, p.uwnd.x, p.uwnd.y,644 p.uwnd.width, p.uwnd.height);645 break;646 647 case OMAPFB_SETUP_PLANE:648 DBG("ioctl SETUP_PLANE\n");649 if (copy_from_user(&p.plane_info, (void __user *)arg,650 sizeof(p.plane_info)))651 r = -EFAULT;652 else653 r = omapfb_setup_plane(fbi, &p.plane_info);654 break;655 656 case OMAPFB_QUERY_PLANE:657 DBG("ioctl QUERY_PLANE\n");658 r = omapfb_query_plane(fbi, &p.plane_info);659 if (r < 0)660 break;661 if (copy_to_user((void __user *)arg, &p.plane_info,662 sizeof(p.plane_info)))663 r = -EFAULT;664 break;665 666 case OMAPFB_SETUP_MEM:667 DBG("ioctl SETUP_MEM\n");668 if (copy_from_user(&p.mem_info, (void __user *)arg,669 sizeof(p.mem_info)))670 r = -EFAULT;671 else672 r = omapfb_setup_mem(fbi, &p.mem_info);673 break;674 675 case OMAPFB_QUERY_MEM:676 DBG("ioctl QUERY_MEM\n");677 r = omapfb_query_mem(fbi, &p.mem_info);678 if (r < 0)679 break;680 if (copy_to_user((void __user *)arg, &p.mem_info,681 sizeof(p.mem_info)))682 r = -EFAULT;683 break;684 685 case OMAPFB_GET_CAPS:686 DBG("ioctl GET_CAPS\n");687 if (!display) {688 r = -EINVAL;689 break;690 }691 692 memset(&p.caps, 0, sizeof(p.caps));693 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)694 p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;695 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)696 p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;697 698 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))699 r = -EFAULT;700 break;701 702 case OMAPFB_GET_OVERLAY_COLORMODE:703 DBG("ioctl GET_OVERLAY_COLORMODE\n");704 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,705 sizeof(p.ovl_colormode))) {706 r = -EFAULT;707 break;708 }709 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);710 if (r < 0)711 break;712 if (copy_to_user((void __user *)arg, &p.ovl_colormode,713 sizeof(p.ovl_colormode)))714 r = -EFAULT;715 break;716 717 case OMAPFB_SET_UPDATE_MODE:718 DBG("ioctl SET_UPDATE_MODE\n");719 if (get_user(p.update_mode, (int __user *)arg))720 r = -EFAULT;721 else722 r = omapfb_set_update_mode(fbi, p.update_mode);723 break;724 725 case OMAPFB_GET_UPDATE_MODE:726 DBG("ioctl GET_UPDATE_MODE\n");727 r = omapfb_get_update_mode(fbi, &p.update_mode);728 if (r)729 break;730 if (put_user(p.update_mode,731 (enum omapfb_update_mode __user *)arg))732 r = -EFAULT;733 break;734 735 case OMAPFB_SET_COLOR_KEY:736 DBG("ioctl SET_COLOR_KEY\n");737 if (copy_from_user(&p.color_key, (void __user *)arg,738 sizeof(p.color_key)))739 r = -EFAULT;740 else741 r = omapfb_set_color_key(fbi, &p.color_key);742 break;743 744 case OMAPFB_GET_COLOR_KEY:745 DBG("ioctl GET_COLOR_KEY\n");746 r = omapfb_get_color_key(fbi, &p.color_key);747 if (r)748 break;749 if (copy_to_user((void __user *)arg, &p.color_key,750 sizeof(p.color_key)))751 r = -EFAULT;752 break;753 754 case FBIO_WAITFORVSYNC:755 if (get_user(p.crt, (__u32 __user *)arg)) {756 r = -EFAULT;757 break;758 }759 if (p.crt != 0) {760 r = -ENODEV;761 break;762 }763 fallthrough;764 765 case OMAPFB_WAITFORVSYNC:766 DBG("ioctl WAITFORVSYNC\n");767 768 if (!display) {769 r = -EINVAL;770 break;771 }772 773 mgr = omapdss_find_mgr_from_display(display);774 if (!mgr) {775 r = -EINVAL;776 break;777 }778 779 r = mgr->wait_for_vsync(mgr);780 break;781 782 case OMAPFB_WAITFORGO:783 DBG("ioctl WAITFORGO\n");784 if (!display) {785 r = -EINVAL;786 break;787 }788 789 r = omapfb_wait_for_go(fbi);790 break;791 792 /* LCD and CTRL tests do the same thing for backward793 * compatibility */794 case OMAPFB_LCD_TEST:795 DBG("ioctl LCD_TEST\n");796 if (get_user(p.test_num, (int __user *)arg)) {797 r = -EFAULT;798 break;799 }800 if (!display || !display->driver->run_test) {801 r = -EINVAL;802 break;803 }804 805 r = display->driver->run_test(display, p.test_num);806 807 break;808 809 case OMAPFB_CTRL_TEST:810 DBG("ioctl CTRL_TEST\n");811 if (get_user(p.test_num, (int __user *)arg)) {812 r = -EFAULT;813 break;814 }815 if (!display || !display->driver->run_test) {816 r = -EINVAL;817 break;818 }819 820 r = display->driver->run_test(display, p.test_num);821 822 break;823 824 case OMAPFB_MEMORY_READ:825 DBG("ioctl MEMORY_READ\n");826 827 if (copy_from_user(&p.memory_read, (void __user *)arg,828 sizeof(p.memory_read))) {829 r = -EFAULT;830 break;831 }832 833 r = omapfb_memory_read(fbi, &p.memory_read);834 835 break;836 837 case OMAPFB_GET_VRAM_INFO: {838 DBG("ioctl GET_VRAM_INFO\n");839 840 /*841 * We don't have the ability to get this vram info anymore.842 * Fill in something that should keep the applications working.843 */844 p.vram_info.total = SZ_1M * 64;845 p.vram_info.free = SZ_1M * 64;846 p.vram_info.largest_free_block = SZ_1M * 64;847 848 if (copy_to_user((void __user *)arg, &p.vram_info,849 sizeof(p.vram_info)))850 r = -EFAULT;851 break;852 }853 854 case OMAPFB_SET_TEARSYNC: {855 DBG("ioctl SET_TEARSYNC\n");856 857 if (copy_from_user(&p.tearsync_info, (void __user *)arg,858 sizeof(p.tearsync_info))) {859 r = -EFAULT;860 break;861 }862 863 if (!display || !display->driver->enable_te) {864 r = -ENODEV;865 break;866 }867 868 r = display->driver->enable_te(display,869 !!p.tearsync_info.enabled);870 871 break;872 }873 874 case OMAPFB_GET_DISPLAY_INFO: {875 u16 xres, yres;876 877 DBG("ioctl GET_DISPLAY_INFO\n");878 879 if (display == NULL) {880 r = -ENODEV;881 break;882 }883 884 display->driver->get_resolution(display, &xres, &yres);885 886 p.display_info.xres = xres;887 p.display_info.yres = yres;888 889 if (display->driver->get_dimensions) {890 u32 w, h;891 display->driver->get_dimensions(display, &w, &h);892 p.display_info.width = w;893 p.display_info.height = h;894 } else {895 p.display_info.width = 0;896 p.display_info.height = 0;897 }898 899 if (copy_to_user((void __user *)arg, &p.display_info,900 sizeof(p.display_info)))901 r = -EFAULT;902 break;903 }904 905 default:906 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);907 r = -EINVAL;908 }909 910 if (r < 0)911 DBG("ioctl failed: %d\n", r);912 913 return r;914}915 916 917