drivers/video/omap2/omapfb/omapfb-ioctl.c - linux - Git at Google

 /*
  * linux/drivers/video/omap2/omapfb-ioctl.c
  *
  * Copyright (C) 2008 Nokia Corporation
  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
  *
  * Some code and ideas taken from drivers/video/omap/ driver
  * by Imre Deak.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published by
  * the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  * more details.
  *
  * You should have received a copy of the GNU General Public License along with
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */

 #include <linux/fb.h>
 #include <linux/device.h>
 #include <linux/uaccess.h>
 #include <linux/platform_device.h>
 #include <linux/mm.h>
 #include <linux/omapfb.h>
 #include <linux/vmalloc.h>

 #include <plat/display.h>
 #include <plat/vrfb.h>
 #include <plat/vram.h>

 #include "omapfb.h"

 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 {
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 	struct omapfb2_device *fbdev = ofbi->fbdev;
 	struct omap_overlay *ovl;
 	struct omap_overlay_info info;
 	int r = 0;

 	DBG("omapfb_setup_plane\n");

 	if (ofbi->num_overlays != 1) {
 		r = -EINVAL;
 		goto out;
 	}

 	/* XXX uses only the first overlay */
 	ovl = ofbi->overlays[0];

 	if (pi->enabled && !ofbi->region.size) {
 		/*
 		 * This plane's memory was freed, can't enable it
 		 * until it's reallocated.
 		 */
 		r = -EINVAL;
 		goto out;
 	}

 	ovl->get_overlay_info(ovl, &info);

 	info.pos_x = pi->pos_x;
 	info.pos_y = pi->pos_y;
 	info.out_width = pi->out_width;
 	info.out_height = pi->out_height;
 	info.enabled = pi->enabled;

 	r = ovl->set_overlay_info(ovl, &info);
 	if (r)
 		goto out;

 	if (ovl->manager) {
 		r = ovl->manager->apply(ovl->manager);
 		if (r)
 			goto out;
 	}

 out:
 	if (r)
 		dev_err(fbdev->dev, "setup_plane failed\n");
 	return r;
 }

 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
 {
 	struct omapfb_info *ofbi = FB2OFB(fbi);

 	if (ofbi->num_overlays != 1) {
 		memset(pi, 0, sizeof(*pi));
 	} else {
 		struct omap_overlay_info *ovli;
 		struct omap_overlay *ovl;

 		ovl = ofbi->overlays[0];
 		ovli = &ovl->info;

 		pi->pos_x = ovli->pos_x;
 		pi->pos_y = ovli->pos_y;
 		pi->enabled = ovli->enabled;
 		pi->channel_out = 0; /* xxx */
 		pi->mirror = 0;
 		pi->out_width = ovli->out_width;
 		pi->out_height = ovli->out_height;
 	}

 	return 0;
 }

 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 {
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 	struct omapfb2_device *fbdev = ofbi->fbdev;
 	struct omapfb2_mem_region *rg;
 	int r, i;
 	size_t size;

 	if (mi->type > OMAPFB_MEMTYPE_MAX)
 		return -EINVAL;

 	size = PAGE_ALIGN(mi->size);

 	rg = &ofbi->region;

 	for (i = 0; i < ofbi->num_overlays; i++) {
 		if (ofbi->overlays[i]->info.enabled)
 			return -EBUSY;
 	}

 	if (rg->size != size || rg->type != mi->type) {
 		r = omapfb_realloc_fbmem(fbi, size, mi->type);
 		if (r) {
 			dev_err(fbdev->dev, "realloc fbmem failed\n");
 			return r;
 		}
 	}

 	return 0;
 }

 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
 {
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 	struct omapfb2_mem_region *rg;

 	rg = &ofbi->region;
 	memset(mi, 0, sizeof(*mi));

 	mi->size = rg->size;
 	mi->type = rg->type;

 	return 0;
 }

 static int omapfb_update_window_nolock(struct fb_info *fbi,
 		u32 x, u32 y, u32 w, u32 h)
 {
 	struct omap_dss_device *display = fb2display(fbi);
 	u16 dw, dh;

 	if (!display)
 		return 0;

 	if (w == 0 || h == 0)
 		return 0;

 	display->driver->get_resolution(display, &dw, &dh);

 	if (x + w > dw || y + h > dh)
 		return -EINVAL;

 	return display->driver->update(display, x, y, w, h);
 }

 /* This function is exported for SGX driver use */
 int omapfb_update_window(struct fb_info *fbi,
 		u32 x, u32 y, u32 w, u32 h)
 {
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 	struct omapfb2_device *fbdev = ofbi->fbdev;
 	int r;

 	if (!lock_fb_info(fbi))
 		return -ENODEV;
 	omapfb_lock(fbdev);

 	r = omapfb_update_window_nolock(fbi, x, y, w, h);

 	omapfb_unlock(fbdev);
 	unlock_fb_info(fbi);

 	return r;
 }
 EXPORT_SYMBOL(omapfb_update_window);

 static int omapfb_set_update_mode(struct fb_info *fbi,
 				   enum omapfb_update_mode mode)
 {
 	struct omap_dss_device *display = fb2display(fbi);
 	enum omap_dss_update_mode um;
 	int r;

 	if (!display || !display->driver->set_update_mode)
 		return -EINVAL;

 	switch (mode) {
 	case OMAPFB_UPDATE_DISABLED:
 		um = OMAP_DSS_UPDATE_DISABLED;
 		break;

 	case OMAPFB_AUTO_UPDATE:
 		um = OMAP_DSS_UPDATE_AUTO;
 		break;

 	case OMAPFB_MANUAL_UPDATE:
 		um = OMAP_DSS_UPDATE_MANUAL;
 		break;

 	default:
 		return -EINVAL;
 	}

 	r = display->driver->set_update_mode(display, um);

 	return r;
 }

 static int omapfb_get_update_mode(struct fb_info *fbi,
 		enum omapfb_update_mode *mode)
 {
 	struct omap_dss_device *display = fb2display(fbi);
 	enum omap_dss_update_mode m;

 	if (!display)
 		return -EINVAL;

 	if (!display->driver->get_update_mode) {
 		*mode = OMAPFB_AUTO_UPDATE;
 		return 0;
 	}

 	m = display->driver->get_update_mode(display);

 	switch (m) {
 	case OMAP_DSS_UPDATE_DISABLED:
 		*mode = OMAPFB_UPDATE_DISABLED;
 		break;
 	case OMAP_DSS_UPDATE_AUTO:
 		*mode = OMAPFB_AUTO_UPDATE;
 		break;
 	case OMAP_DSS_UPDATE_MANUAL:
 		*mode = OMAPFB_MANUAL_UPDATE;
 		break;
 	default:
 		BUG();
 	}

 	return 0;
 }

 /* XXX this color key handling is a hack... */
 static struct omapfb_color_key omapfb_color_keys[2];

 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
 		struct omapfb_color_key *ck)
 {
 	struct omap_overlay_manager_info info;
 	enum omap_dss_trans_key_type kt;
 	int r;

 	mgr->get_manager_info(mgr, &info);

 	if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
 		info.trans_enabled = false;
 		omapfb_color_keys[mgr->id] = *ck;

 		r = mgr->set_manager_info(mgr, &info);
 		if (r)
 			return r;

 		r = mgr->apply(mgr);

 		return r;
 	}

 	switch (ck->key_type) {
 	case OMAPFB_COLOR_KEY_GFX_DST:
 		kt = OMAP_DSS_COLOR_KEY_GFX_DST;
 		break;
 	case OMAPFB_COLOR_KEY_VID_SRC:
 		kt = OMAP_DSS_COLOR_KEY_VID_SRC;
 		break;
 	default:
 		return -EINVAL;
 	}

 	info.default_color = ck->background;
 	info.trans_key = ck->trans_key;
 	info.trans_key_type = kt;
 	info.trans_enabled = true;

 	omapfb_color_keys[mgr->id] = *ck;

 	r = mgr->set_manager_info(mgr, &info);
 	if (r)
 		return r;

 	r = mgr->apply(mgr);

 	return r;
 }

 static int omapfb_set_color_key(struct fb_info *fbi,
 		struct omapfb_color_key *ck)
 {
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 	struct omapfb2_device *fbdev = ofbi->fbdev;
 	int r;
 	int i;
 	struct omap_overlay_manager *mgr = NULL;

 	omapfb_lock(fbdev);

 	for (i = 0; i < ofbi->num_overlays; i++) {
 		if (ofbi->overlays[i]->manager) {
 			mgr = ofbi->overlays[i]->manager;
 			break;
 		}
 	}

 	if (!mgr) {
 		r = -EINVAL;
 		goto err;
 	}

 	r = _omapfb_set_color_key(mgr, ck);
 err:
 	omapfb_unlock(fbdev);

 	return r;
 }

 static int omapfb_get_color_key(struct fb_info *fbi,
 		struct omapfb_color_key *ck)
 {
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 	struct omapfb2_device *fbdev = ofbi->fbdev;
 	struct omap_overlay_manager *mgr = NULL;
 	int r = 0;
 	int i;

 	omapfb_lock(fbdev);

 	for (i = 0; i < ofbi->num_overlays; i++) {
 		if (ofbi->overlays[i]->manager) {
 			mgr = ofbi->overlays[i]->manager;
 			break;
 		}
 	}

 	if (!mgr) {
 		r = -EINVAL;
 		goto err;
 	}

 	*ck = omapfb_color_keys[mgr->id];
 err:
 	omapfb_unlock(fbdev);

 	return r;
 }

 static int omapfb_memory_read(struct fb_info *fbi,
 		struct omapfb_memory_read *mr)
 {
 	struct omap_dss_device *display = fb2display(fbi);
 	void *buf;
 	int r;

 	if (!display || !display->driver->memory_read)
 		return -ENOENT;

 	if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
 		return -EFAULT;

 	if (mr->w * mr->h * 3 > mr->buffer_size)
 		return -EINVAL;

 	buf = vmalloc(mr->buffer_size);
 	if (!buf) {
 		DBG("vmalloc failed\n");
 		return -ENOMEM;
 	}

 	r = display->driver->memory_read(display, buf, mr->buffer_size,
 			mr->x, mr->y, mr->w, mr->h);

 	if (r > 0) {
 		if (copy_to_user(mr->buffer, buf, mr->buffer_size))
 			r = -EFAULT;
 	}

 	vfree(buf);

 	return r;
 }

 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
 			     struct omapfb_ovl_colormode *mode)
 {
 	int ovl_idx = mode->overlay_idx;
 	int mode_idx = mode->mode_idx;
 	struct omap_overlay *ovl;
 	enum omap_color_mode supported_modes;
 	struct fb_var_screeninfo var;
 	int i;

 	if (ovl_idx >= fbdev->num_overlays)
 		return -ENODEV;
 	ovl = fbdev->overlays[ovl_idx];
 	supported_modes = ovl->supported_modes;

 	mode_idx = mode->mode_idx;

 	for (i = 0; i < sizeof(supported_modes) * 8; i++) {
 		if (!(supported_modes & (1 << i)))
 			continue;
 		/*
 		 * It's possible that the FB doesn't support a mode
 		 * that is supported by the overlay, so call the
 		 * following here.
 		 */
 		if (dss_mode_to_fb_mode(1 << i, &var) < 0)
 			continue;

 		mode_idx--;
 		if (mode_idx < 0)
 			break;
 	}

 	if (i == sizeof(supported_modes) * 8)
 		return -ENOENT;

 	mode->bits_per_pixel = var.bits_per_pixel;
 	mode->nonstd = var.nonstd;
 	mode->red = var.red;
 	mode->green = var.green;
 	mode->blue = var.blue;
 	mode->transp = var.transp;

 	return 0;
 }

 static int omapfb_wait_for_go(struct fb_info *fbi)
 {
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 	int r = 0;
 	int i;

 	for (i = 0; i < ofbi->num_overlays; ++i) {
 		struct omap_overlay *ovl = ofbi->overlays[i];
 		r = ovl->wait_for_go(ovl);
 		if (r)
 			break;
 	}

 	return r;
 }

 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
 {
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 	struct omapfb2_device *fbdev = ofbi->fbdev;
 	struct omap_dss_device *display = fb2display(fbi);

 	union {
 		struct omapfb_update_window_old	uwnd_o;
 		struct omapfb_update_window	uwnd;
 		struct omapfb_plane_info	plane_info;
 		struct omapfb_caps		caps;
 		struct omapfb_mem_info          mem_info;
 		struct omapfb_color_key		color_key;
 		struct omapfb_ovl_colormode	ovl_colormode;
 		enum omapfb_update_mode		update_mode;
 		int test_num;
 		struct omapfb_memory_read	memory_read;
 		struct omapfb_vram_info		vram_info;
 		struct omapfb_tearsync_info	tearsync_info;
 		struct omapfb_display_info	display_info;
 	} p;

 	int r = 0;

 	switch (cmd) {
 	case OMAPFB_SYNC_GFX:
 		DBG("ioctl SYNC_GFX\n");
 		if (!display || !display->driver->sync) {
 			/* DSS1 never returns an error here, so we neither */
 			/*r = -EINVAL;*/
 			break;
 		}

 		r = display->driver->sync(display);
 		break;

 	case OMAPFB_UPDATE_WINDOW_OLD:
 		DBG("ioctl UPDATE_WINDOW_OLD\n");
 		if (!display || !display->driver->update) {
 			r = -EINVAL;
 			break;
 		}

 		if (copy_from_user(&p.uwnd_o,
 					(void __user *)arg,
 					sizeof(p.uwnd_o))) {
 			r = -EFAULT;
 			break;
 		}

 		r = omapfb_update_window_nolock(fbi, p.uwnd_o.x, p.uwnd_o.y,
 				p.uwnd_o.width, p.uwnd_o.height);
 		break;

 	case OMAPFB_UPDATE_WINDOW:
 		DBG("ioctl UPDATE_WINDOW\n");
 		if (!display || !display->driver->update) {
 			r = -EINVAL;
 			break;
 		}

 		if (copy_from_user(&p.uwnd, (void __user *)arg,
 					sizeof(p.uwnd))) {
 			r = -EFAULT;
 			break;
 		}

 		r = omapfb_update_window_nolock(fbi, p.uwnd.x, p.uwnd.y,
 				p.uwnd.width, p.uwnd.height);
 		break;

 	case OMAPFB_SETUP_PLANE:
 		DBG("ioctl SETUP_PLANE\n");
 		if (copy_from_user(&p.plane_info, (void __user *)arg,
 					sizeof(p.plane_info)))
 			r = -EFAULT;
 		else
 			r = omapfb_setup_plane(fbi, &p.plane_info);
 		break;

 	case OMAPFB_QUERY_PLANE:
 		DBG("ioctl QUERY_PLANE\n");
 		r = omapfb_query_plane(fbi, &p.plane_info);
 		if (r < 0)
 			break;
 		if (copy_to_user((void __user *)arg, &p.plane_info,
 					sizeof(p.plane_info)))
 			r = -EFAULT;
 		break;

 	case OMAPFB_SETUP_MEM:
 		DBG("ioctl SETUP_MEM\n");
 		if (copy_from_user(&p.mem_info, (void __user *)arg,
 					sizeof(p.mem_info)))
 			r = -EFAULT;
 		else
 			r = omapfb_setup_mem(fbi, &p.mem_info);
 		break;

 	case OMAPFB_QUERY_MEM:
 		DBG("ioctl QUERY_MEM\n");
 		r = omapfb_query_mem(fbi, &p.mem_info);
 		if (r < 0)
 			break;
 		if (copy_to_user((void __user *)arg, &p.mem_info,
 					sizeof(p.mem_info)))
 			r = -EFAULT;
 		break;

 	case OMAPFB_GET_CAPS:
 		DBG("ioctl GET_CAPS\n");
 		if (!display) {
 			r = -EINVAL;
 			break;
 		}

 		memset(&p.caps, 0, sizeof(p.caps));
 		if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
 			p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
 		if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
 			p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;

 		if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
 			r = -EFAULT;
 		break;

 	case OMAPFB_GET_OVERLAY_COLORMODE:
 		DBG("ioctl GET_OVERLAY_COLORMODE\n");
 		if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
 				   sizeof(p.ovl_colormode))) {
 			r = -EFAULT;
 			break;
 		}
 		r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
 		if (r < 0)
 			break;
 		if (copy_to_user((void __user *)arg, &p.ovl_colormode,
 				 sizeof(p.ovl_colormode)))
 			r = -EFAULT;
 		break;

 	case OMAPFB_SET_UPDATE_MODE:
 		DBG("ioctl SET_UPDATE_MODE\n");
 		if (get_user(p.update_mode, (int __user *)arg))
 			r = -EFAULT;
 		else
 			r = omapfb_set_update_mode(fbi, p.update_mode);
 		break;

 	case OMAPFB_GET_UPDATE_MODE:
 		DBG("ioctl GET_UPDATE_MODE\n");
 		r = omapfb_get_update_mode(fbi, &p.update_mode);
 		if (r)
 			break;
 		if (put_user(p.update_mode,
 					(enum omapfb_update_mode __user *)arg))
 			r = -EFAULT;
 		break;

 	case OMAPFB_SET_COLOR_KEY:
 		DBG("ioctl SET_COLOR_KEY\n");
 		if (copy_from_user(&p.color_key, (void __user *)arg,
 				   sizeof(p.color_key)))
 			r = -EFAULT;
 		else
 			r = omapfb_set_color_key(fbi, &p.color_key);
 		break;

 	case OMAPFB_GET_COLOR_KEY:
 		DBG("ioctl GET_COLOR_KEY\n");
 		r = omapfb_get_color_key(fbi, &p.color_key);
 		if (r)
 			break;
 		if (copy_to_user((void __user *)arg, &p.color_key,
 				 sizeof(p.color_key)))
 			r = -EFAULT;
 		break;

 	case OMAPFB_WAITFORVSYNC:
 		DBG("ioctl WAITFORVSYNC\n");
 		if (!display) {
 			r = -EINVAL;
 			break;
 		}

 		r = display->manager->wait_for_vsync(display->manager);
 		break;

 	case OMAPFB_WAITFORGO:
 		DBG("ioctl WAITFORGO\n");
 		if (!display) {
 			r = -EINVAL;
 			break;
 		}

 		r = omapfb_wait_for_go(fbi);
 		break;

 	/* LCD and CTRL tests do the same thing for backward
 	 * compatibility */
 	case OMAPFB_LCD_TEST:
 		DBG("ioctl LCD_TEST\n");
 		if (get_user(p.test_num, (int __user *)arg)) {
 			r = -EFAULT;
 			break;
 		}
 		if (!display || !display->driver->run_test) {
 			r = -EINVAL;
 			break;
 		}

 		r = display->driver->run_test(display, p.test_num);

 		break;

 	case OMAPFB_CTRL_TEST:
 		DBG("ioctl CTRL_TEST\n");
 		if (get_user(p.test_num, (int __user *)arg)) {
 			r = -EFAULT;
 			break;
 		}
 		if (!display || !display->driver->run_test) {
 			r = -EINVAL;
 			break;
 		}

 		r = display->driver->run_test(display, p.test_num);

 		break;

 	case OMAPFB_MEMORY_READ:
 		DBG("ioctl MEMORY_READ\n");

 		if (copy_from_user(&p.memory_read, (void __user *)arg,
 					sizeof(p.memory_read))) {
 			r = -EFAULT;
 			break;
 		}

 		r = omapfb_memory_read(fbi, &p.memory_read);

 		break;

 	case OMAPFB_GET_VRAM_INFO: {
 		unsigned long vram, free, largest;

 		DBG("ioctl GET_VRAM_INFO\n");

 		omap_vram_get_info(&vram, &free, &largest);
 		p.vram_info.total = vram;
 		p.vram_info.free = free;
 		p.vram_info.largest_free_block = largest;

 		if (copy_to_user((void __user *)arg, &p.vram_info,
 					sizeof(p.vram_info)))
 			r = -EFAULT;
 		break;
 	}

 	case OMAPFB_SET_TEARSYNC: {
 		DBG("ioctl SET_TEARSYNC\n");

 		if (copy_from_user(&p.tearsync_info, (void __user *)arg,
 					sizeof(p.tearsync_info))) {
 			r = -EFAULT;
 			break;
 		}

 		if (!display->driver->enable_te) {
 			r = -ENODEV;
 			break;
 		}

 		r = display->driver->enable_te(display,
 				!!p.tearsync_info.enabled);

 		break;
 	}

 	case OMAPFB_GET_DISPLAY_INFO: {
 		u16 xres, yres;

 		DBG("ioctl GET_DISPLAY_INFO\n");

 		if (display == NULL) {
 			r = -ENODEV;
 			break;
 		}

 		display->driver->get_resolution(display, &xres, &yres);

 		p.display_info.xres = xres;
 		p.display_info.yres = yres;
 		p.display_info.width = 0;
 		p.display_info.height = 0;

 		if (copy_to_user((void __user *)arg, &p.display_info,
 					sizeof(p.display_info)))
 			r = -EFAULT;
 		break;
 	}

 	default:
 		dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
 		r = -EINVAL;
 	}

 	if (r < 0)
 		DBG("ioctl failed: %d\n", r);

 	return r;
 }
	/*
	* linux/drivers/video/omap2/omapfb-ioctl.c
	*
	* Copyright (C) 2008 Nokia Corporation
	* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
	*
	* Some code and ideas taken from drivers/video/omap/ driver
	* by Imre Deak.
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 as published by
	* the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	* more details.
	*
	* You should have received a copy of the GNU General Public License along with
	* this program. If not, see <http://www.gnu.org/licenses/>.
	*/

	#include <linux/fb.h>
	#include <linux/device.h>
	#include <linux/uaccess.h>
	#include <linux/platform_device.h>
	#include <linux/mm.h>
	#include <linux/omapfb.h>
	#include <linux/vmalloc.h>

	#include <plat/display.h>
	#include <plat/vrfb.h>
	#include <plat/vram.h>

	#include "omapfb.h"

	static int omapfb_setup_plane(struct fb_info fbi, struct omapfb_plane_info pi)
	{
	struct omapfb_info *ofbi = FB2OFB(fbi);
	struct omapfb2_device *fbdev = ofbi->fbdev;
	struct omap_overlay *ovl;
	struct omap_overlay_info info;
	int r = 0;

	DBG("omapfb_setup_plane\n");

	if (ofbi->num_overlays != 1) {
	r = -EINVAL;
	goto out;
	}

	/* XXX uses only the first overlay */
	ovl = ofbi->overlays[0];

	if (pi->enabled && !ofbi->region.size) {
	/*
	* This plane's memory was freed, can't enable it
	* until it's reallocated.
	*/
	r = -EINVAL;
	goto out;
	}

	ovl->get_overlay_info(ovl, &info);

	info.pos_x = pi->pos_x;
	info.pos_y = pi->pos_y;
	info.out_width = pi->out_width;
	info.out_height = pi->out_height;
	info.enabled = pi->enabled;

	r = ovl->set_overlay_info(ovl, &info);
	if (r)
	goto out;

	if (ovl->manager) {
	r = ovl->manager->apply(ovl->manager);
	if (r)
	goto out;
	}

	out:
	if (r)
	dev_err(fbdev->dev, "setup_plane failed\n");
	return r;
	}

	static int omapfb_query_plane(struct fb_info fbi, struct omapfb_plane_info pi)
	{
	struct omapfb_info *ofbi = FB2OFB(fbi);

	if (ofbi->num_overlays != 1) {
	memset(pi, 0, sizeof(*pi));
	} else {
	struct omap_overlay_info *ovli;
	struct omap_overlay *ovl;

	ovl = ofbi->overlays[0];
	ovli = &ovl->info;

	pi->pos_x = ovli->pos_x;
	pi->pos_y = ovli->pos_y;
	pi->enabled = ovli->enabled;
	pi->channel_out = 0; /* xxx */
	pi->mirror = 0;
	pi->out_width = ovli->out_width;
	pi->out_height = ovli->out_height;
	}

	return 0;
	}

	static int omapfb_setup_mem(struct fb_info fbi, struct omapfb_mem_info mi)
	{
	struct omapfb_info *ofbi = FB2OFB(fbi);
	struct omapfb2_device *fbdev = ofbi->fbdev;
	struct omapfb2_mem_region *rg;
	int r, i;
	size_t size;

	if (mi->type > OMAPFB_MEMTYPE_MAX)
	return -EINVAL;

	size = PAGE_ALIGN(mi->size);

	rg = &ofbi->region;

	for (i = 0; i < ofbi->num_overlays; i++) {
	if (ofbi->overlays[i]->info.enabled)
	return -EBUSY;
	}

	if (rg->size != size \|\| rg->type != mi->type) {
	r = omapfb_realloc_fbmem(fbi, size, mi->type);
	if (r) {
	dev_err(fbdev->dev, "realloc fbmem failed\n");
	return r;
	}
	}

	return 0;
	}

	static int omapfb_query_mem(struct fb_info fbi, struct omapfb_mem_info mi)
	{
	struct omapfb_info *ofbi = FB2OFB(fbi);
	struct omapfb2_mem_region *rg;

	rg = &ofbi->region;
	memset(mi, 0, sizeof(*mi));

	mi->size = rg->size;
	mi->type = rg->type;

	return 0;
	}

	static int omapfb_update_window_nolock(struct fb_info *fbi,
	u32 x, u32 y, u32 w, u32 h)
	{
	struct omap_dss_device *display = fb2display(fbi);
	u16 dw, dh;

	if (!display)
	return 0;

	if (w == 0 \|\| h == 0)
	return 0;

	display->driver->get_resolution(display, &dw, &dh);

	if (x + w > dw \|\| y + h > dh)
	return -EINVAL;

	return display->driver->update(display, x, y, w, h);
	}

	/* This function is exported for SGX driver use */
	int omapfb_update_window(struct fb_info *fbi,
	u32 x, u32 y, u32 w, u32 h)
	{
	struct omapfb_info *ofbi = FB2OFB(fbi);
	struct omapfb2_device *fbdev = ofbi->fbdev;
	int r;

	if (!lock_fb_info(fbi))
	return -ENODEV;
	omapfb_lock(fbdev);

	r = omapfb_update_window_nolock(fbi, x, y, w, h);

	omapfb_unlock(fbdev);
	unlock_fb_info(fbi);

	return r;
	}
	EXPORT_SYMBOL(omapfb_update_window);

	static int omapfb_set_update_mode(struct fb_info *fbi,
	enum omapfb_update_mode mode)
	{
	struct omap_dss_device *display = fb2display(fbi);
	enum omap_dss_update_mode um;
	int r;

	if (!display \|\| !display->driver->set_update_mode)
	return -EINVAL;

	switch (mode) {
	case OMAPFB_UPDATE_DISABLED:
	um = OMAP_DSS_UPDATE_DISABLED;
	break;

	case OMAPFB_AUTO_UPDATE:
	um = OMAP_DSS_UPDATE_AUTO;
	break;

	case OMAPFB_MANUAL_UPDATE:
	um = OMAP_DSS_UPDATE_MANUAL;
	break;

	default:
	return -EINVAL;
	}

	r = display->driver->set_update_mode(display, um);

	return r;
	}

	static int omapfb_get_update_mode(struct fb_info *fbi,
	enum omapfb_update_mode *mode)
	{
	struct omap_dss_device *display = fb2display(fbi);
	enum omap_dss_update_mode m;

	if (!display)
	return -EINVAL;

	if (!display->driver->get_update_mode) {
	*mode = OMAPFB_AUTO_UPDATE;
	return 0;
	}

	m = display->driver->get_update_mode(display);

	switch (m) {
	case OMAP_DSS_UPDATE_DISABLED:
	*mode = OMAPFB_UPDATE_DISABLED;
	break;
	case OMAP_DSS_UPDATE_AUTO:
	*mode = OMAPFB_AUTO_UPDATE;
	break;
	case OMAP_DSS_UPDATE_MANUAL:
	*mode = OMAPFB_MANUAL_UPDATE;
	break;
	default:
	BUG();
	}

	return 0;
	}

	/* XXX this color key handling is a hack... */
	static struct omapfb_color_key omapfb_color_keys[2];

	static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
	struct omapfb_color_key *ck)
	{
	struct omap_overlay_manager_info info;
	enum omap_dss_trans_key_type kt;
	int r;

	mgr->get_manager_info(mgr, &info);

	if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
	info.trans_enabled = false;
	omapfb_color_keys[mgr->id] = *ck;

	r = mgr->set_manager_info(mgr, &info);
	if (r)
	return r;

	r = mgr->apply(mgr);

	return r;
	}

	switch (ck->key_type) {
	case OMAPFB_COLOR_KEY_GFX_DST:
	kt = OMAP_DSS_COLOR_KEY_GFX_DST;
	break;
	case OMAPFB_COLOR_KEY_VID_SRC:
	kt = OMAP_DSS_COLOR_KEY_VID_SRC;
	break;
	default:
	return -EINVAL;
	}

	info.default_color = ck->background;
	info.trans_key = ck->trans_key;
	info.trans_key_type = kt;
	info.trans_enabled = true;

	omapfb_color_keys[mgr->id] = *ck;

	r = mgr->set_manager_info(mgr, &info);
	if (r)
	return r;

	r = mgr->apply(mgr);

	return r;
	}

	static int omapfb_set_color_key(struct fb_info *fbi,
	struct omapfb_color_key *ck)
	{
	struct omapfb_info *ofbi = FB2OFB(fbi);
	struct omapfb2_device *fbdev = ofbi->fbdev;
	int r;
	int i;
	struct omap_overlay_manager *mgr = NULL;

	omapfb_lock(fbdev);

	for (i = 0; i < ofbi->num_overlays; i++) {
	if (ofbi->overlays[i]->manager) {
	mgr = ofbi->overlays[i]->manager;
	break;
	}
	}

	if (!mgr) {
	r = -EINVAL;
	goto err;
	}

	r = _omapfb_set_color_key(mgr, ck);
	err:
	omapfb_unlock(fbdev);

	return r;
	}

	static int omapfb_get_color_key(struct fb_info *fbi,
	struct omapfb_color_key *ck)
	{
	struct omapfb_info *ofbi = FB2OFB(fbi);
	struct omapfb2_device *fbdev = ofbi->fbdev;
	struct omap_overlay_manager *mgr = NULL;
	int r = 0;
	int i;

	omapfb_lock(fbdev);

	for (i = 0; i < ofbi->num_overlays; i++) {
	if (ofbi->overlays[i]->manager) {
	mgr = ofbi->overlays[i]->manager;
	break;
	}
	}

	if (!mgr) {
	r = -EINVAL;
	goto err;
	}

	*ck = omapfb_color_keys[mgr->id];
	err:
	omapfb_unlock(fbdev);

	return r;
	}

	static int omapfb_memory_read(struct fb_info *fbi,
	struct omapfb_memory_read *mr)
	{
	struct omap_dss_device *display = fb2display(fbi);
	void *buf;
	int r;

	if (!display \|\| !display->driver->memory_read)
	return -ENOENT;

	if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
	return -EFAULT;

	if (mr->w * mr->h * 3 > mr->buffer_size)
	return -EINVAL;

	buf = vmalloc(mr->buffer_size);
	if (!buf) {
	DBG("vmalloc failed\n");
	return -ENOMEM;
	}

	r = display->driver->memory_read(display, buf, mr->buffer_size,
	mr->x, mr->y, mr->w, mr->h);

	if (r > 0) {
	if (copy_to_user(mr->buffer, buf, mr->buffer_size))
	r = -EFAULT;
	}

	vfree(buf);

	return r;
	}

	static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
	struct omapfb_ovl_colormode *mode)
	{
	int ovl_idx = mode->overlay_idx;
	int mode_idx = mode->mode_idx;
	struct omap_overlay *ovl;
	enum omap_color_mode supported_modes;
	struct fb_var_screeninfo var;
	int i;

	if (ovl_idx >= fbdev->num_overlays)
	return -ENODEV;
	ovl = fbdev->overlays[ovl_idx];
	supported_modes = ovl->supported_modes;

	mode_idx = mode->mode_idx;

	for (i = 0; i < sizeof(supported_modes) * 8; i++) {
	if (!(supported_modes & (1 << i)))
	continue;
	/*
	* It's possible that the FB doesn't support a mode
	* that is supported by the overlay, so call the
	* following here.
	*/
	if (dss_mode_to_fb_mode(1 << i, &var) < 0)
	continue;

	mode_idx--;
	if (mode_idx < 0)
	break;
	}

	if (i == sizeof(supported_modes) * 8)
	return -ENOENT;

	mode->bits_per_pixel = var.bits_per_pixel;
	mode->nonstd = var.nonstd;
	mode->red = var.red;
	mode->green = var.green;
	mode->blue = var.blue;
	mode->transp = var.transp;

	return 0;
	}

	static int omapfb_wait_for_go(struct fb_info *fbi)
	{
	struct omapfb_info *ofbi = FB2OFB(fbi);
	int r = 0;
	int i;

	for (i = 0; i < ofbi->num_overlays; ++i) {
	struct omap_overlay *ovl = ofbi->overlays[i];
	r = ovl->wait_for_go(ovl);
	if (r)
	break;
	}

	return r;
	}

	int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
	{
	struct omapfb_info *ofbi = FB2OFB(fbi);
	struct omapfb2_device *fbdev = ofbi->fbdev;
	struct omap_dss_device *display = fb2display(fbi);

	union {
	struct omapfb_update_window_old uwnd_o;
	struct omapfb_update_window uwnd;
	struct omapfb_plane_info plane_info;
	struct omapfb_caps caps;
	struct omapfb_mem_info mem_info;
	struct omapfb_color_key color_key;
	struct omapfb_ovl_colormode ovl_colormode;
	enum omapfb_update_mode update_mode;
	int test_num;
	struct omapfb_memory_read memory_read;
	struct omapfb_vram_info vram_info;
	struct omapfb_tearsync_info tearsync_info;
	struct omapfb_display_info display_info;
	} p;

	int r = 0;

	switch (cmd) {
	case OMAPFB_SYNC_GFX:
	DBG("ioctl SYNC_GFX\n");
	if (!display \|\| !display->driver->sync) {
	/* DSS1 never returns an error here, so we neither */
	/r = -EINVAL;/
	break;
	}

	r = display->driver->sync(display);
	break;

	case OMAPFB_UPDATE_WINDOW_OLD:
	DBG("ioctl UPDATE_WINDOW_OLD\n");
	if (!display \|\| !display->driver->update) {
	r = -EINVAL;
	break;
	}

	if (copy_from_user(&p.uwnd_o,
	(void __user *)arg,
	sizeof(p.uwnd_o))) {
	r = -EFAULT;
	break;
	}

	r = omapfb_update_window_nolock(fbi, p.uwnd_o.x, p.uwnd_o.y,
	p.uwnd_o.width, p.uwnd_o.height);
	break;

	case OMAPFB_UPDATE_WINDOW:
	DBG("ioctl UPDATE_WINDOW\n");
	if (!display \|\| !display->driver->update) {
	r = -EINVAL;
	break;
	}

	if (copy_from_user(&p.uwnd, (void __user *)arg,
	sizeof(p.uwnd))) {
	r = -EFAULT;
	break;
	}

	r = omapfb_update_window_nolock(fbi, p.uwnd.x, p.uwnd.y,
	p.uwnd.width, p.uwnd.height);
	break;

	case OMAPFB_SETUP_PLANE:
	DBG("ioctl SETUP_PLANE\n");
	if (copy_from_user(&p.plane_info, (void __user *)arg,
	sizeof(p.plane_info)))
	r = -EFAULT;
	else
	r = omapfb_setup_plane(fbi, &p.plane_info);
	break;

	case OMAPFB_QUERY_PLANE:
	DBG("ioctl QUERY_PLANE\n");
	r = omapfb_query_plane(fbi, &p.plane_info);
	if (r < 0)
	break;
	if (copy_to_user((void __user *)arg, &p.plane_info,
	sizeof(p.plane_info)))
	r = -EFAULT;
	break;

	case OMAPFB_SETUP_MEM:
	DBG("ioctl SETUP_MEM\n");
	if (copy_from_user(&p.mem_info, (void __user *)arg,
	sizeof(p.mem_info)))
	r = -EFAULT;
	else
	r = omapfb_setup_mem(fbi, &p.mem_info);
	break;

	case OMAPFB_QUERY_MEM:
	DBG("ioctl QUERY_MEM\n");
	r = omapfb_query_mem(fbi, &p.mem_info);
	if (r < 0)
	break;
	if (copy_to_user((void __user *)arg, &p.mem_info,
	sizeof(p.mem_info)))
	r = -EFAULT;
	break;

	case OMAPFB_GET_CAPS:
	DBG("ioctl GET_CAPS\n");
	if (!display) {
	r = -EINVAL;
	break;
	}

	memset(&p.caps, 0, sizeof(p.caps));
	if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
	p.caps.ctrl \|= OMAPFB_CAPS_MANUAL_UPDATE;
	if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
	p.caps.ctrl \|= OMAPFB_CAPS_TEARSYNC;

	if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
	r = -EFAULT;
	break;

	case OMAPFB_GET_OVERLAY_COLORMODE:
	DBG("ioctl GET_OVERLAY_COLORMODE\n");
	if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
	sizeof(p.ovl_colormode))) {
	r = -EFAULT;
	break;
	}
	r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
	if (r < 0)
	break;
	if (copy_to_user((void __user *)arg, &p.ovl_colormode,
	sizeof(p.ovl_colormode)))
	r = -EFAULT;
	break;

	case OMAPFB_SET_UPDATE_MODE:
	DBG("ioctl SET_UPDATE_MODE\n");
	if (get_user(p.update_mode, (int __user *)arg))
	r = -EFAULT;
	else
	r = omapfb_set_update_mode(fbi, p.update_mode);
	break;

	case OMAPFB_GET_UPDATE_MODE:
	DBG("ioctl GET_UPDATE_MODE\n");
	r = omapfb_get_update_mode(fbi, &p.update_mode);
	if (r)
	break;
	if (put_user(p.update_mode,
	(enum omapfb_update_mode __user *)arg))
	r = -EFAULT;
	break;

	case OMAPFB_SET_COLOR_KEY:
	DBG("ioctl SET_COLOR_KEY\n");
	if (copy_from_user(&p.color_key, (void __user *)arg,
	sizeof(p.color_key)))
	r = -EFAULT;
	else
	r = omapfb_set_color_key(fbi, &p.color_key);
	break;

	case OMAPFB_GET_COLOR_KEY:
	DBG("ioctl GET_COLOR_KEY\n");
	r = omapfb_get_color_key(fbi, &p.color_key);
	if (r)
	break;
	if (copy_to_user((void __user *)arg, &p.color_key,
	sizeof(p.color_key)))
	r = -EFAULT;
	break;

	case OMAPFB_WAITFORVSYNC:
	DBG("ioctl WAITFORVSYNC\n");
	if (!display) {
	r = -EINVAL;
	break;
	}

	r = display->manager->wait_for_vsync(display->manager);
	break;

	case OMAPFB_WAITFORGO:
	DBG("ioctl WAITFORGO\n");
	if (!display) {
	r = -EINVAL;
	break;
	}

	r = omapfb_wait_for_go(fbi);
	break;

	/* LCD and CTRL tests do the same thing for backward
	* compatibility */
	case OMAPFB_LCD_TEST:
	DBG("ioctl LCD_TEST\n");
	if (get_user(p.test_num, (int __user *)arg)) {
	r = -EFAULT;
	break;
	}
	if (!display \|\| !display->driver->run_test) {
	r = -EINVAL;
	break;
	}

	r = display->driver->run_test(display, p.test_num);

	break;

	case OMAPFB_CTRL_TEST:
	DBG("ioctl CTRL_TEST\n");
	if (get_user(p.test_num, (int __user *)arg)) {
	r = -EFAULT;
	break;
	}
	if (!display \|\| !display->driver->run_test) {
	r = -EINVAL;
	break;
	}

	r = display->driver->run_test(display, p.test_num);

	break;

	case OMAPFB_MEMORY_READ:
	DBG("ioctl MEMORY_READ\n");

	if (copy_from_user(&p.memory_read, (void __user *)arg,
	sizeof(p.memory_read))) {
	r = -EFAULT;
	break;
	}

	r = omapfb_memory_read(fbi, &p.memory_read);

	break;

	case OMAPFB_GET_VRAM_INFO: {
	unsigned long vram, free, largest;

	DBG("ioctl GET_VRAM_INFO\n");

	omap_vram_get_info(&vram, &free, &largest);
	p.vram_info.total = vram;
	p.vram_info.free = free;
	p.vram_info.largest_free_block = largest;

	if (copy_to_user((void __user *)arg, &p.vram_info,
	sizeof(p.vram_info)))
	r = -EFAULT;
	break;
	}

	case OMAPFB_SET_TEARSYNC: {
	DBG("ioctl SET_TEARSYNC\n");

	if (copy_from_user(&p.tearsync_info, (void __user *)arg,
	sizeof(p.tearsync_info))) {
	r = -EFAULT;
	break;
	}

	if (!display->driver->enable_te) {
	r = -ENODEV;
	break;
	}

	r = display->driver->enable_te(display,
	!!p.tearsync_info.enabled);

	break;
	}

	case OMAPFB_GET_DISPLAY_INFO: {
	u16 xres, yres;

	DBG("ioctl GET_DISPLAY_INFO\n");

	if (display == NULL) {
	r = -ENODEV;
	break;
	}

	display->driver->get_resolution(display, &xres, &yres);

	p.display_info.xres = xres;
	p.display_info.yres = yres;
	p.display_info.width = 0;
	p.display_info.height = 0;

	if (copy_to_user((void __user *)arg, &p.display_info,
	sizeof(p.display_info)))
	r = -EFAULT;
	break;
	}

	default:
	dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
	r = -EINVAL;
	}

	if (r < 0)
	DBG("ioctl failed: %d\n", r);

	return r;
	}