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0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * linux/drivers/video/omap2/omapfb-ioctl.c
0004  *
0005  * Copyright (C) 2008 Nokia Corporation
0006  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
0007  *
0008  * Some code and ideas taken from drivers/video/omap/ driver
0009  * by Imre Deak.
0010  */
0011 
0012 #include <linux/fb.h>
0013 #include <linux/device.h>
0014 #include <linux/uaccess.h>
0015 #include <linux/platform_device.h>
0016 #include <linux/mm.h>
0017 #include <linux/omapfb.h>
0018 #include <linux/vmalloc.h>
0019 #include <linux/export.h>
0020 #include <linux/sizes.h>
0021 
0022 #include <video/omapfb_dss.h>
0023 #include <video/omapvrfb.h>
0024 
0025 #include "omapfb.h"
0026 
0027 static u8 get_mem_idx(struct omapfb_info *ofbi)
0028 {
0029     if (ofbi->id == ofbi->region->id)
0030         return 0;
0031 
0032     return OMAPFB_MEM_IDX_ENABLED | ofbi->region->id;
0033 }
0034 
0035 static struct omapfb2_mem_region *get_mem_region(struct omapfb_info *ofbi,
0036                          u8 mem_idx)
0037 {
0038     struct omapfb2_device *fbdev = ofbi->fbdev;
0039 
0040     if (mem_idx & OMAPFB_MEM_IDX_ENABLED)
0041         mem_idx &= OMAPFB_MEM_IDX_MASK;
0042     else
0043         mem_idx = ofbi->id;
0044 
0045     if (mem_idx >= fbdev->num_fbs)
0046         return NULL;
0047 
0048     return &fbdev->regions[mem_idx];
0049 }
0050 
0051 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
0052 {
0053     struct omapfb_info *ofbi = FB2OFB(fbi);
0054     struct omapfb2_device *fbdev = ofbi->fbdev;
0055     struct omap_overlay *ovl;
0056     struct omap_overlay_info old_info;
0057     struct omapfb2_mem_region *old_rg, *new_rg;
0058     int r = 0;
0059 
0060     DBG("omapfb_setup_plane\n");
0061 
0062     if (ofbi->num_overlays == 0) {
0063         r = -EINVAL;
0064         goto out;
0065     }
0066 
0067     /* XXX uses only the first overlay */
0068     ovl = ofbi->overlays[0];
0069 
0070     old_rg = ofbi->region;
0071     new_rg = get_mem_region(ofbi, pi->mem_idx);
0072     if (!new_rg) {
0073         r = -EINVAL;
0074         goto out;
0075     }
0076 
0077     /* Take the locks in a specific order to keep lockdep happy */
0078     if (old_rg->id < new_rg->id) {
0079         omapfb_get_mem_region(old_rg);
0080         omapfb_get_mem_region(new_rg);
0081     } else if (new_rg->id < old_rg->id) {
0082         omapfb_get_mem_region(new_rg);
0083         omapfb_get_mem_region(old_rg);
0084     } else
0085         omapfb_get_mem_region(old_rg);
0086 
0087     if (pi->enabled && !new_rg->size) {
0088         /*
0089          * This plane's memory was freed, can't enable it
0090          * until it's reallocated.
0091          */
0092         r = -EINVAL;
0093         goto put_mem;
0094     }
0095 
0096     ovl->get_overlay_info(ovl, &old_info);
0097 
0098     if (old_rg != new_rg) {
0099         ofbi->region = new_rg;
0100         set_fb_fix(fbi);
0101     }
0102 
0103     if (!pi->enabled) {
0104         r = ovl->disable(ovl);
0105         if (r)
0106             goto undo;
0107     }
0108 
0109     if (pi->enabled) {
0110         r = omapfb_setup_overlay(fbi, ovl, pi->pos_x, pi->pos_y,
0111             pi->out_width, pi->out_height);
0112         if (r)
0113             goto undo;
0114     } else {
0115         struct omap_overlay_info info;
0116 
0117         ovl->get_overlay_info(ovl, &info);
0118 
0119         info.pos_x = pi->pos_x;
0120         info.pos_y = pi->pos_y;
0121         info.out_width = pi->out_width;
0122         info.out_height = pi->out_height;
0123 
0124         r = ovl->set_overlay_info(ovl, &info);
0125         if (r)
0126             goto undo;
0127     }
0128 
0129     if (ovl->manager) {
0130         r = ovl->manager->apply(ovl->manager);
0131         if (r)
0132             goto undo;
0133     }
0134 
0135     if (pi->enabled) {
0136         r = ovl->enable(ovl);
0137         if (r)
0138             goto undo;
0139     }
0140 
0141     /* Release the locks in a specific order to keep lockdep happy */
0142     if (old_rg->id > new_rg->id) {
0143         omapfb_put_mem_region(old_rg);
0144         omapfb_put_mem_region(new_rg);
0145     } else if (new_rg->id > old_rg->id) {
0146         omapfb_put_mem_region(new_rg);
0147         omapfb_put_mem_region(old_rg);
0148     } else
0149         omapfb_put_mem_region(old_rg);
0150 
0151     return 0;
0152 
0153  undo:
0154     if (old_rg != new_rg) {
0155         ofbi->region = old_rg;
0156         set_fb_fix(fbi);
0157     }
0158 
0159     ovl->set_overlay_info(ovl, &old_info);
0160  put_mem:
0161     /* Release the locks in a specific order to keep lockdep happy */
0162     if (old_rg->id > new_rg->id) {
0163         omapfb_put_mem_region(old_rg);
0164         omapfb_put_mem_region(new_rg);
0165     } else if (new_rg->id > old_rg->id) {
0166         omapfb_put_mem_region(new_rg);
0167         omapfb_put_mem_region(old_rg);
0168     } else
0169         omapfb_put_mem_region(old_rg);
0170  out:
0171     dev_err(fbdev->dev, "setup_plane failed\n");
0172 
0173     return r;
0174 }
0175 
0176 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
0177 {
0178     struct omapfb_info *ofbi = FB2OFB(fbi);
0179 
0180     if (ofbi->num_overlays == 0) {
0181         memset(pi, 0, sizeof(*pi));
0182     } else {
0183         struct omap_overlay *ovl;
0184         struct omap_overlay_info ovli;
0185 
0186         ovl = ofbi->overlays[0];
0187         ovl->get_overlay_info(ovl, &ovli);
0188 
0189         pi->pos_x = ovli.pos_x;
0190         pi->pos_y = ovli.pos_y;
0191         pi->enabled = ovl->is_enabled(ovl);
0192         pi->channel_out = 0; /* xxx */
0193         pi->mirror = 0;
0194         pi->mem_idx = get_mem_idx(ofbi);
0195         pi->out_width = ovli.out_width;
0196         pi->out_height = ovli.out_height;
0197     }
0198 
0199     return 0;
0200 }
0201 
0202 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
0203 {
0204     struct omapfb_info *ofbi = FB2OFB(fbi);
0205     struct omapfb2_device *fbdev = ofbi->fbdev;
0206     struct omap_dss_device *display = fb2display(fbi);
0207     struct omapfb2_mem_region *rg;
0208     int r = 0, i;
0209     size_t size;
0210 
0211     if (mi->type != OMAPFB_MEMTYPE_SDRAM)
0212         return -EINVAL;
0213 
0214     size = PAGE_ALIGN(mi->size);
0215 
0216     if (display && display->driver->sync)
0217         display->driver->sync(display);
0218 
0219     rg = ofbi->region;
0220 
0221     down_write_nested(&rg->lock, rg->id);
0222     atomic_inc(&rg->lock_count);
0223 
0224     if (rg->size == size && rg->type == mi->type)
0225         goto out;
0226 
0227     if (atomic_read(&rg->map_count)) {
0228         r = -EBUSY;
0229         goto out;
0230     }
0231 
0232     for (i = 0; i < fbdev->num_fbs; i++) {
0233         struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
0234         int j;
0235 
0236         if (ofbi2->region != rg)
0237             continue;
0238 
0239         for (j = 0; j < ofbi2->num_overlays; j++) {
0240             struct omap_overlay *ovl;
0241             ovl = ofbi2->overlays[j];
0242             if (ovl->is_enabled(ovl)) {
0243                 r = -EBUSY;
0244                 goto out;
0245             }
0246         }
0247     }
0248 
0249     r = omapfb_realloc_fbmem(fbi, size, mi->type);
0250     if (r) {
0251         dev_err(fbdev->dev, "realloc fbmem failed\n");
0252         goto out;
0253     }
0254 
0255  out:
0256     atomic_dec(&rg->lock_count);
0257     up_write(&rg->lock);
0258 
0259     return r;
0260 }
0261 
0262 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
0263 {
0264     struct omapfb_info *ofbi = FB2OFB(fbi);
0265     struct omapfb2_mem_region *rg;
0266 
0267     rg = omapfb_get_mem_region(ofbi->region);
0268     memset(mi, 0, sizeof(*mi));
0269 
0270     mi->size = rg->size;
0271     mi->type = rg->type;
0272 
0273     omapfb_put_mem_region(rg);
0274 
0275     return 0;
0276 }
0277 
0278 static int omapfb_update_window(struct fb_info *fbi,
0279         u32 x, u32 y, u32 w, u32 h)
0280 {
0281     struct omap_dss_device *display = fb2display(fbi);
0282     u16 dw, dh;
0283 
0284     if (!display)
0285         return 0;
0286 
0287     if (w == 0 || h == 0)
0288         return 0;
0289 
0290     display->driver->get_resolution(display, &dw, &dh);
0291 
0292     if (x + w > dw || y + h > dh)
0293         return -EINVAL;
0294 
0295     return display->driver->update(display, x, y, w, h);
0296 }
0297 
0298 int omapfb_set_update_mode(struct fb_info *fbi,
0299                    enum omapfb_update_mode mode)
0300 {
0301     struct omap_dss_device *display = fb2display(fbi);
0302     struct omapfb_info *ofbi = FB2OFB(fbi);
0303     struct omapfb2_device *fbdev = ofbi->fbdev;
0304     struct omapfb_display_data *d;
0305     int r;
0306 
0307     if (!display)
0308         return -EINVAL;
0309 
0310     if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
0311         return -EINVAL;
0312 
0313     omapfb_lock(fbdev);
0314 
0315     d = get_display_data(fbdev, display);
0316 
0317     if (d->update_mode == mode) {
0318         omapfb_unlock(fbdev);
0319         return 0;
0320     }
0321 
0322     r = 0;
0323 
0324     if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
0325         if (mode == OMAPFB_AUTO_UPDATE)
0326             omapfb_start_auto_update(fbdev, display);
0327         else /* MANUAL_UPDATE */
0328             omapfb_stop_auto_update(fbdev, display);
0329 
0330         d->update_mode = mode;
0331     } else { /* AUTO_UPDATE */
0332         if (mode == OMAPFB_MANUAL_UPDATE)
0333             r = -EINVAL;
0334     }
0335 
0336     omapfb_unlock(fbdev);
0337 
0338     return r;
0339 }
0340 
0341 int omapfb_get_update_mode(struct fb_info *fbi,
0342         enum omapfb_update_mode *mode)
0343 {
0344     struct omap_dss_device *display = fb2display(fbi);
0345     struct omapfb_info *ofbi = FB2OFB(fbi);
0346     struct omapfb2_device *fbdev = ofbi->fbdev;
0347     struct omapfb_display_data *d;
0348 
0349     if (!display)
0350         return -EINVAL;
0351 
0352     omapfb_lock(fbdev);
0353 
0354     d = get_display_data(fbdev, display);
0355 
0356     *mode = d->update_mode;
0357 
0358     omapfb_unlock(fbdev);
0359 
0360     return 0;
0361 }
0362 
0363 /* XXX this color key handling is a hack... */
0364 static struct omapfb_color_key omapfb_color_keys[2];
0365 
0366 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
0367         struct omapfb_color_key *ck)
0368 {
0369     struct omap_overlay_manager_info info;
0370     enum omap_dss_trans_key_type kt;
0371     int r;
0372 
0373     mgr->get_manager_info(mgr, &info);
0374 
0375     if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
0376         info.trans_enabled = false;
0377         omapfb_color_keys[mgr->id] = *ck;
0378 
0379         r = mgr->set_manager_info(mgr, &info);
0380         if (r)
0381             return r;
0382 
0383         r = mgr->apply(mgr);
0384 
0385         return r;
0386     }
0387 
0388     switch (ck->key_type) {
0389     case OMAPFB_COLOR_KEY_GFX_DST:
0390         kt = OMAP_DSS_COLOR_KEY_GFX_DST;
0391         break;
0392     case OMAPFB_COLOR_KEY_VID_SRC:
0393         kt = OMAP_DSS_COLOR_KEY_VID_SRC;
0394         break;
0395     default:
0396         return -EINVAL;
0397     }
0398 
0399     info.default_color = ck->background;
0400     info.trans_key = ck->trans_key;
0401     info.trans_key_type = kt;
0402     info.trans_enabled = true;
0403 
0404     omapfb_color_keys[mgr->id] = *ck;
0405 
0406     r = mgr->set_manager_info(mgr, &info);
0407     if (r)
0408         return r;
0409 
0410     r = mgr->apply(mgr);
0411 
0412     return r;
0413 }
0414 
0415 static int omapfb_set_color_key(struct fb_info *fbi,
0416         struct omapfb_color_key *ck)
0417 {
0418     struct omapfb_info *ofbi = FB2OFB(fbi);
0419     struct omapfb2_device *fbdev = ofbi->fbdev;
0420     int r;
0421     int i;
0422     struct omap_overlay_manager *mgr = NULL;
0423 
0424     omapfb_lock(fbdev);
0425 
0426     for (i = 0; i < ofbi->num_overlays; i++) {
0427         if (ofbi->overlays[i]->manager) {
0428             mgr = ofbi->overlays[i]->manager;
0429             break;
0430         }
0431     }
0432 
0433     if (!mgr) {
0434         r = -EINVAL;
0435         goto err;
0436     }
0437 
0438     r = _omapfb_set_color_key(mgr, ck);
0439 err:
0440     omapfb_unlock(fbdev);
0441 
0442     return r;
0443 }
0444 
0445 static int omapfb_get_color_key(struct fb_info *fbi,
0446         struct omapfb_color_key *ck)
0447 {
0448     struct omapfb_info *ofbi = FB2OFB(fbi);
0449     struct omapfb2_device *fbdev = ofbi->fbdev;
0450     struct omap_overlay_manager *mgr = NULL;
0451     int r = 0;
0452     int i;
0453 
0454     omapfb_lock(fbdev);
0455 
0456     for (i = 0; i < ofbi->num_overlays; i++) {
0457         if (ofbi->overlays[i]->manager) {
0458             mgr = ofbi->overlays[i]->manager;
0459             break;
0460         }
0461     }
0462 
0463     if (!mgr) {
0464         r = -EINVAL;
0465         goto err;
0466     }
0467 
0468     *ck = omapfb_color_keys[mgr->id];
0469 err:
0470     omapfb_unlock(fbdev);
0471 
0472     return r;
0473 }
0474 
0475 static int omapfb_memory_read(struct fb_info *fbi,
0476         struct omapfb_memory_read *mr)
0477 {
0478     struct omap_dss_device *display = fb2display(fbi);
0479     void *buf;
0480     int r;
0481 
0482     if (!display || !display->driver->memory_read)
0483         return -ENOENT;
0484 
0485     if (mr->w > 4096 || mr->h > 4096)
0486         return -EINVAL;
0487 
0488     if (mr->w * mr->h * 3 > mr->buffer_size)
0489         return -EINVAL;
0490 
0491     buf = vmalloc(mr->buffer_size);
0492     if (!buf) {
0493         DBG("vmalloc failed\n");
0494         return -ENOMEM;
0495     }
0496 
0497     r = display->driver->memory_read(display, buf, mr->buffer_size,
0498             mr->x, mr->y, mr->w, mr->h);
0499 
0500     if (r > 0) {
0501         if (copy_to_user(mr->buffer, buf, r))
0502             r = -EFAULT;
0503     }
0504 
0505     vfree(buf);
0506 
0507     return r;
0508 }
0509 
0510 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
0511                  struct omapfb_ovl_colormode *mode)
0512 {
0513     int ovl_idx = mode->overlay_idx;
0514     int mode_idx = mode->mode_idx;
0515     struct omap_overlay *ovl;
0516     enum omap_color_mode supported_modes;
0517     struct fb_var_screeninfo var;
0518     int i;
0519 
0520     if (ovl_idx >= fbdev->num_overlays)
0521         return -ENODEV;
0522     ovl = fbdev->overlays[ovl_idx];
0523     supported_modes = ovl->supported_modes;
0524 
0525     mode_idx = mode->mode_idx;
0526 
0527     for (i = 0; i < sizeof(supported_modes) * 8; i++) {
0528         if (!(supported_modes & (1 << i)))
0529             continue;
0530         /*
0531          * It's possible that the FB doesn't support a mode
0532          * that is supported by the overlay, so call the
0533          * following here.
0534          */
0535         if (dss_mode_to_fb_mode(1 << i, &var) < 0)
0536             continue;
0537 
0538         mode_idx--;
0539         if (mode_idx < 0)
0540             break;
0541     }
0542 
0543     if (i == sizeof(supported_modes) * 8)
0544         return -ENOENT;
0545 
0546     mode->bits_per_pixel = var.bits_per_pixel;
0547     mode->nonstd = var.nonstd;
0548     mode->red = var.red;
0549     mode->green = var.green;
0550     mode->blue = var.blue;
0551     mode->transp = var.transp;
0552 
0553     return 0;
0554 }
0555 
0556 static int omapfb_wait_for_go(struct fb_info *fbi)
0557 {
0558     struct omapfb_info *ofbi = FB2OFB(fbi);
0559     int r = 0;
0560     int i;
0561 
0562     for (i = 0; i < ofbi->num_overlays; ++i) {
0563         struct omap_overlay *ovl = ofbi->overlays[i];
0564         r = ovl->wait_for_go(ovl);
0565         if (r)
0566             break;
0567     }
0568 
0569     return r;
0570 }
0571 
0572 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
0573 {
0574     struct omapfb_info *ofbi = FB2OFB(fbi);
0575     struct omapfb2_device *fbdev = ofbi->fbdev;
0576     struct omap_dss_device *display = fb2display(fbi);
0577     struct omap_overlay_manager *mgr;
0578 
0579     union {
0580         struct omapfb_update_window_old uwnd_o;
0581         struct omapfb_update_window uwnd;
0582         struct omapfb_plane_info    plane_info;
0583         struct omapfb_caps      caps;
0584         struct omapfb_mem_info          mem_info;
0585         struct omapfb_color_key     color_key;
0586         struct omapfb_ovl_colormode ovl_colormode;
0587         enum omapfb_update_mode     update_mode;
0588         int test_num;
0589         struct omapfb_memory_read   memory_read;
0590         struct omapfb_vram_info     vram_info;
0591         struct omapfb_tearsync_info tearsync_info;
0592         struct omapfb_display_info  display_info;
0593         u32             crt;
0594     } p;
0595 
0596     int r = 0;
0597 
0598     memset(&p, 0, sizeof(p));
0599 
0600     switch (cmd) {
0601     case OMAPFB_SYNC_GFX:
0602         DBG("ioctl SYNC_GFX\n");
0603         if (!display || !display->driver->sync) {
0604             /* DSS1 never returns an error here, so we neither */
0605             /*r = -EINVAL;*/
0606             break;
0607         }
0608 
0609         r = display->driver->sync(display);
0610         break;
0611 
0612     case OMAPFB_UPDATE_WINDOW_OLD:
0613         DBG("ioctl UPDATE_WINDOW_OLD\n");
0614         if (!display || !display->driver->update) {
0615             r = -EINVAL;
0616             break;
0617         }
0618 
0619         if (copy_from_user(&p.uwnd_o,
0620                     (void __user *)arg,
0621                     sizeof(p.uwnd_o))) {
0622             r = -EFAULT;
0623             break;
0624         }
0625 
0626         r = omapfb_update_window(fbi, p.uwnd_o.x, p.uwnd_o.y,
0627                 p.uwnd_o.width, p.uwnd_o.height);
0628         break;
0629 
0630     case OMAPFB_UPDATE_WINDOW:
0631         DBG("ioctl UPDATE_WINDOW\n");
0632         if (!display || !display->driver->update) {
0633             r = -EINVAL;
0634             break;
0635         }
0636 
0637         if (copy_from_user(&p.uwnd, (void __user *)arg,
0638                     sizeof(p.uwnd))) {
0639             r = -EFAULT;
0640             break;
0641         }
0642 
0643         r = omapfb_update_window(fbi, p.uwnd.x, p.uwnd.y,
0644                 p.uwnd.width, p.uwnd.height);
0645         break;
0646 
0647     case OMAPFB_SETUP_PLANE:
0648         DBG("ioctl SETUP_PLANE\n");
0649         if (copy_from_user(&p.plane_info, (void __user *)arg,
0650                     sizeof(p.plane_info)))
0651             r = -EFAULT;
0652         else
0653             r = omapfb_setup_plane(fbi, &p.plane_info);
0654         break;
0655 
0656     case OMAPFB_QUERY_PLANE:
0657         DBG("ioctl QUERY_PLANE\n");
0658         r = omapfb_query_plane(fbi, &p.plane_info);
0659         if (r < 0)
0660             break;
0661         if (copy_to_user((void __user *)arg, &p.plane_info,
0662                     sizeof(p.plane_info)))
0663             r = -EFAULT;
0664         break;
0665 
0666     case OMAPFB_SETUP_MEM:
0667         DBG("ioctl SETUP_MEM\n");
0668         if (copy_from_user(&p.mem_info, (void __user *)arg,
0669                     sizeof(p.mem_info)))
0670             r = -EFAULT;
0671         else
0672             r = omapfb_setup_mem(fbi, &p.mem_info);
0673         break;
0674 
0675     case OMAPFB_QUERY_MEM:
0676         DBG("ioctl QUERY_MEM\n");
0677         r = omapfb_query_mem(fbi, &p.mem_info);
0678         if (r < 0)
0679             break;
0680         if (copy_to_user((void __user *)arg, &p.mem_info,
0681                     sizeof(p.mem_info)))
0682             r = -EFAULT;
0683         break;
0684 
0685     case OMAPFB_GET_CAPS:
0686         DBG("ioctl GET_CAPS\n");
0687         if (!display) {
0688             r = -EINVAL;
0689             break;
0690         }
0691 
0692         memset(&p.caps, 0, sizeof(p.caps));
0693         if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
0694             p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
0695         if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
0696             p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
0697 
0698         if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
0699             r = -EFAULT;
0700         break;
0701 
0702     case OMAPFB_GET_OVERLAY_COLORMODE:
0703         DBG("ioctl GET_OVERLAY_COLORMODE\n");
0704         if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
0705                    sizeof(p.ovl_colormode))) {
0706             r = -EFAULT;
0707             break;
0708         }
0709         r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
0710         if (r < 0)
0711             break;
0712         if (copy_to_user((void __user *)arg, &p.ovl_colormode,
0713                  sizeof(p.ovl_colormode)))
0714             r = -EFAULT;
0715         break;
0716 
0717     case OMAPFB_SET_UPDATE_MODE:
0718         DBG("ioctl SET_UPDATE_MODE\n");
0719         if (get_user(p.update_mode, (int __user *)arg))
0720             r = -EFAULT;
0721         else
0722             r = omapfb_set_update_mode(fbi, p.update_mode);
0723         break;
0724 
0725     case OMAPFB_GET_UPDATE_MODE:
0726         DBG("ioctl GET_UPDATE_MODE\n");
0727         r = omapfb_get_update_mode(fbi, &p.update_mode);
0728         if (r)
0729             break;
0730         if (put_user(p.update_mode,
0731                     (enum omapfb_update_mode __user *)arg))
0732             r = -EFAULT;
0733         break;
0734 
0735     case OMAPFB_SET_COLOR_KEY:
0736         DBG("ioctl SET_COLOR_KEY\n");
0737         if (copy_from_user(&p.color_key, (void __user *)arg,
0738                    sizeof(p.color_key)))
0739             r = -EFAULT;
0740         else
0741             r = omapfb_set_color_key(fbi, &p.color_key);
0742         break;
0743 
0744     case OMAPFB_GET_COLOR_KEY:
0745         DBG("ioctl GET_COLOR_KEY\n");
0746         r = omapfb_get_color_key(fbi, &p.color_key);
0747         if (r)
0748             break;
0749         if (copy_to_user((void __user *)arg, &p.color_key,
0750                  sizeof(p.color_key)))
0751             r = -EFAULT;
0752         break;
0753 
0754     case FBIO_WAITFORVSYNC:
0755         if (get_user(p.crt, (__u32 __user *)arg)) {
0756             r = -EFAULT;
0757             break;
0758         }
0759         if (p.crt != 0) {
0760             r = -ENODEV;
0761             break;
0762         }
0763         fallthrough;
0764 
0765     case OMAPFB_WAITFORVSYNC:
0766         DBG("ioctl WAITFORVSYNC\n");
0767 
0768         if (!display) {
0769             r = -EINVAL;
0770             break;
0771         }
0772 
0773         mgr = omapdss_find_mgr_from_display(display);
0774         if (!mgr) {
0775             r = -EINVAL;
0776             break;
0777         }
0778 
0779         r = mgr->wait_for_vsync(mgr);
0780         break;
0781 
0782     case OMAPFB_WAITFORGO:
0783         DBG("ioctl WAITFORGO\n");
0784         if (!display) {
0785             r = -EINVAL;
0786             break;
0787         }
0788 
0789         r = omapfb_wait_for_go(fbi);
0790         break;
0791 
0792     /* LCD and CTRL tests do the same thing for backward
0793      * compatibility */
0794     case OMAPFB_LCD_TEST:
0795         DBG("ioctl LCD_TEST\n");
0796         if (get_user(p.test_num, (int __user *)arg)) {
0797             r = -EFAULT;
0798             break;
0799         }
0800         if (!display || !display->driver->run_test) {
0801             r = -EINVAL;
0802             break;
0803         }
0804 
0805         r = display->driver->run_test(display, p.test_num);
0806 
0807         break;
0808 
0809     case OMAPFB_CTRL_TEST:
0810         DBG("ioctl CTRL_TEST\n");
0811         if (get_user(p.test_num, (int __user *)arg)) {
0812             r = -EFAULT;
0813             break;
0814         }
0815         if (!display || !display->driver->run_test) {
0816             r = -EINVAL;
0817             break;
0818         }
0819 
0820         r = display->driver->run_test(display, p.test_num);
0821 
0822         break;
0823 
0824     case OMAPFB_MEMORY_READ:
0825         DBG("ioctl MEMORY_READ\n");
0826 
0827         if (copy_from_user(&p.memory_read, (void __user *)arg,
0828                     sizeof(p.memory_read))) {
0829             r = -EFAULT;
0830             break;
0831         }
0832 
0833         r = omapfb_memory_read(fbi, &p.memory_read);
0834 
0835         break;
0836 
0837     case OMAPFB_GET_VRAM_INFO: {
0838         DBG("ioctl GET_VRAM_INFO\n");
0839 
0840         /*
0841          * We don't have the ability to get this vram info anymore.
0842          * Fill in something that should keep the applications working.
0843          */
0844         p.vram_info.total = SZ_1M * 64;
0845         p.vram_info.free = SZ_1M * 64;
0846         p.vram_info.largest_free_block = SZ_1M * 64;
0847 
0848         if (copy_to_user((void __user *)arg, &p.vram_info,
0849                     sizeof(p.vram_info)))
0850             r = -EFAULT;
0851         break;
0852     }
0853 
0854     case OMAPFB_SET_TEARSYNC: {
0855         DBG("ioctl SET_TEARSYNC\n");
0856 
0857         if (copy_from_user(&p.tearsync_info, (void __user *)arg,
0858                     sizeof(p.tearsync_info))) {
0859             r = -EFAULT;
0860             break;
0861         }
0862 
0863         if (!display || !display->driver->enable_te) {
0864             r = -ENODEV;
0865             break;
0866         }
0867 
0868         r = display->driver->enable_te(display,
0869                 !!p.tearsync_info.enabled);
0870 
0871         break;
0872     }
0873 
0874     case OMAPFB_GET_DISPLAY_INFO: {
0875         u16 xres, yres;
0876 
0877         DBG("ioctl GET_DISPLAY_INFO\n");
0878 
0879         if (display == NULL) {
0880             r = -ENODEV;
0881             break;
0882         }
0883 
0884         display->driver->get_resolution(display, &xres, &yres);
0885 
0886         p.display_info.xres = xres;
0887         p.display_info.yres = yres;
0888 
0889         if (display->driver->get_dimensions) {
0890             u32 w, h;
0891             display->driver->get_dimensions(display, &w, &h);
0892             p.display_info.width = w;
0893             p.display_info.height = h;
0894         } else {
0895             p.display_info.width = 0;
0896             p.display_info.height = 0;
0897         }
0898 
0899         if (copy_to_user((void __user *)arg, &p.display_info,
0900                     sizeof(p.display_info)))
0901             r = -EFAULT;
0902         break;
0903     }
0904 
0905     default:
0906         dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
0907         r = -EINVAL;
0908     }
0909 
0910     if (r < 0)
0911         DBG("ioctl failed: %d\n", r);
0912 
0913     return r;
0914 }
0915 
0916
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