From f7018c21350204c4cf628462f229d44d03545254 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Thu, 13 Feb 2014 15:31:38 +0200
Subject: video: move fbdev to drivers/video/fbdev

The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.

Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.

No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/video/uvesafb.c | 2028 -----------------------------------------------
 1 file changed, 2028 deletions(-)
 delete mode 100644 drivers/video/uvesafb.c

(limited to 'drivers/video/uvesafb.c')

diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c
deleted file mode 100644
index 509d452e8f91..000000000000
--- a/drivers/video/uvesafb.c
+++ /dev/null
@@ -1,2028 +0,0 @@
-/*
- * A framebuffer driver for VBE 2.0+ compliant video cards
- *
- * (c) 2007 Michal Januszewski <spock@gentoo.org>
- *     Loosely based upon the vesafb driver.
- *
- */
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/skbuff.h>
-#include <linux/timer.h>
-#include <linux/completion.h>
-#include <linux/connector.h>
-#include <linux/random.h>
-#include <linux/platform_device.h>
-#include <linux/limits.h>
-#include <linux/fb.h>
-#include <linux/io.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <video/edid.h>
-#include <video/uvesafb.h>
-#ifdef CONFIG_X86
-#include <video/vga.h>
-#endif
-#include "edid.h"
-
-static struct cb_id uvesafb_cn_id = {
-	.idx = CN_IDX_V86D,
-	.val = CN_VAL_V86D_UVESAFB
-};
-static char v86d_path[PATH_MAX] = "/sbin/v86d";
-static char v86d_started;	/* has v86d been started by uvesafb? */
-
-static struct fb_fix_screeninfo uvesafb_fix = {
-	.id	= "VESA VGA",
-	.type	= FB_TYPE_PACKED_PIXELS,
-	.accel	= FB_ACCEL_NONE,
-	.visual = FB_VISUAL_TRUECOLOR,
-};
-
-static int mtrr		= 3;	/* enable mtrr by default */
-static bool blank	= 1;	/* enable blanking by default */
-static int ypan		= 1;	/* 0: scroll, 1: ypan, 2: ywrap */
-static bool pmi_setpal	= true; /* use PMI for palette changes */
-static bool nocrtc;		/* ignore CRTC settings */
-static bool noedid;		/* don't try DDC transfers */
-static int vram_remap;		/* set amt. of memory to be used */
-static int vram_total;		/* set total amount of memory */
-static u16 maxclk;		/* maximum pixel clock */
-static u16 maxvf;		/* maximum vertical frequency */
-static u16 maxhf;		/* maximum horizontal frequency */
-static u16 vbemode;		/* force use of a specific VBE mode */
-static char *mode_option;
-static u8  dac_width	= 6;
-
-static struct uvesafb_ktask *uvfb_tasks[UVESAFB_TASKS_MAX];
-static DEFINE_MUTEX(uvfb_lock);
-
-/*
- * A handler for replies from userspace.
- *
- * Make sure each message passes consistency checks and if it does,
- * find the kernel part of the task struct, copy the registers and
- * the buffer contents and then complete the task.
- */
-static void uvesafb_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
-{
-	struct uvesafb_task *utask;
-	struct uvesafb_ktask *task;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return;
-
-	if (msg->seq >= UVESAFB_TASKS_MAX)
-		return;
-
-	mutex_lock(&uvfb_lock);
-	task = uvfb_tasks[msg->seq];
-
-	if (!task || msg->ack != task->ack) {
-		mutex_unlock(&uvfb_lock);
-		return;
-	}
-
-	utask = (struct uvesafb_task *)msg->data;
-
-	/* Sanity checks for the buffer length. */
-	if (task->t.buf_len < utask->buf_len ||
-	    utask->buf_len > msg->len - sizeof(*utask)) {
-		mutex_unlock(&uvfb_lock);
-		return;
-	}
-
-	uvfb_tasks[msg->seq] = NULL;
-	mutex_unlock(&uvfb_lock);
-
-	memcpy(&task->t, utask, sizeof(*utask));
-
-	if (task->t.buf_len && task->buf)
-		memcpy(task->buf, utask + 1, task->t.buf_len);
-
-	complete(task->done);
-	return;
-}
-
-static int uvesafb_helper_start(void)
-{
-	char *envp[] = {
-		"HOME=/",
-		"PATH=/sbin:/bin",
-		NULL,
-	};
-
-	char *argv[] = {
-		v86d_path,
-		NULL,
-	};
-
-	return call_usermodehelper(v86d_path, argv, envp, UMH_WAIT_PROC);
-}
-
-/*
- * Execute a uvesafb task.
- *
- * Returns 0 if the task is executed successfully.
- *
- * A message sent to the userspace consists of the uvesafb_task
- * struct and (optionally) a buffer. The uvesafb_task struct is
- * a simplified version of uvesafb_ktask (its kernel counterpart)
- * containing only the register values, flags and the length of
- * the buffer.
- *
- * Each message is assigned a sequence number (increased linearly)
- * and a random ack number. The sequence number is used as a key
- * for the uvfb_tasks array which holds pointers to uvesafb_ktask
- * structs for all requests.
- */
-static int uvesafb_exec(struct uvesafb_ktask *task)
-{
-	static int seq;
-	struct cn_msg *m;
-	int err;
-	int len = sizeof(task->t) + task->t.buf_len;
-
-	/*
-	 * Check whether the message isn't longer than the maximum
-	 * allowed by connector.
-	 */
-	if (sizeof(*m) + len > CONNECTOR_MAX_MSG_SIZE) {
-		printk(KERN_WARNING "uvesafb: message too long (%d), "
-			"can't execute task\n", (int)(sizeof(*m) + len));
-		return -E2BIG;
-	}
-
-	m = kzalloc(sizeof(*m) + len, GFP_KERNEL);
-	if (!m)
-		return -ENOMEM;
-
-	init_completion(task->done);
-
-	memcpy(&m->id, &uvesafb_cn_id, sizeof(m->id));
-	m->seq = seq;
-	m->len = len;
-	m->ack = prandom_u32();
-
-	/* uvesafb_task structure */
-	memcpy(m + 1, &task->t, sizeof(task->t));
-
-	/* Buffer */
-	memcpy((u8 *)(m + 1) + sizeof(task->t), task->buf, task->t.buf_len);
-
-	/*
-	 * Save the message ack number so that we can find the kernel
-	 * part of this task when a reply is received from userspace.
-	 */
-	task->ack = m->ack;
-
-	mutex_lock(&uvfb_lock);
-
-	/* If all slots are taken -- bail out. */
-	if (uvfb_tasks[seq]) {
-		mutex_unlock(&uvfb_lock);
-		err = -EBUSY;
-		goto out;
-	}
-
-	/* Save a pointer to the kernel part of the task struct. */
-	uvfb_tasks[seq] = task;
-	mutex_unlock(&uvfb_lock);
-
-	err = cn_netlink_send(m, 0, 0, GFP_KERNEL);
-	if (err == -ESRCH) {
-		/*
-		 * Try to start the userspace helper if sending
-		 * the request failed the first time.
-		 */
-		err = uvesafb_helper_start();
-		if (err) {
-			printk(KERN_ERR "uvesafb: failed to execute %s\n",
-					v86d_path);
-			printk(KERN_ERR "uvesafb: make sure that the v86d "
-					"helper is installed and executable\n");
-		} else {
-			v86d_started = 1;
-			err = cn_netlink_send(m, 0, 0, gfp_any());
-			if (err == -ENOBUFS)
-				err = 0;
-		}
-	} else if (err == -ENOBUFS)
-		err = 0;
-
-	if (!err && !(task->t.flags & TF_EXIT))
-		err = !wait_for_completion_timeout(task->done,
-				msecs_to_jiffies(UVESAFB_TIMEOUT));
-
-	mutex_lock(&uvfb_lock);
-	uvfb_tasks[seq] = NULL;
-	mutex_unlock(&uvfb_lock);
-
-	seq++;
-	if (seq >= UVESAFB_TASKS_MAX)
-		seq = 0;
-out:
-	kfree(m);
-	return err;
-}
-
-/*
- * Free a uvesafb_ktask struct.
- */
-static void uvesafb_free(struct uvesafb_ktask *task)
-{
-	if (task) {
-		kfree(task->done);
-		kfree(task);
-	}
-}
-
-/*
- * Prepare a uvesafb_ktask struct to be used again.
- */
-static void uvesafb_reset(struct uvesafb_ktask *task)
-{
-	struct completion *cpl = task->done;
-
-	memset(task, 0, sizeof(*task));
-	task->done = cpl;
-}
-
-/*
- * Allocate and prepare a uvesafb_ktask struct.
- */
-static struct uvesafb_ktask *uvesafb_prep(void)
-{
-	struct uvesafb_ktask *task;
-
-	task = kzalloc(sizeof(*task), GFP_KERNEL);
-	if (task) {
-		task->done = kzalloc(sizeof(*task->done), GFP_KERNEL);
-		if (!task->done) {
-			kfree(task);
-			task = NULL;
-		}
-	}
-	return task;
-}
-
-static void uvesafb_setup_var(struct fb_var_screeninfo *var,
-		struct fb_info *info, struct vbe_mode_ib *mode)
-{
-	struct uvesafb_par *par = info->par;
-
-	var->vmode = FB_VMODE_NONINTERLACED;
-	var->sync = FB_SYNC_VERT_HIGH_ACT;
-
-	var->xres = mode->x_res;
-	var->yres = mode->y_res;
-	var->xres_virtual = mode->x_res;
-	var->yres_virtual = (par->ypan) ?
-			info->fix.smem_len / mode->bytes_per_scan_line :
-			mode->y_res;
-	var->xoffset = 0;
-	var->yoffset = 0;
-	var->bits_per_pixel = mode->bits_per_pixel;
-
-	if (var->bits_per_pixel == 15)
-		var->bits_per_pixel = 16;
-
-	if (var->bits_per_pixel > 8) {
-		var->red.offset    = mode->red_off;
-		var->red.length    = mode->red_len;
-		var->green.offset  = mode->green_off;
-		var->green.length  = mode->green_len;
-		var->blue.offset   = mode->blue_off;
-		var->blue.length   = mode->blue_len;
-		var->transp.offset = mode->rsvd_off;
-		var->transp.length = mode->rsvd_len;
-	} else {
-		var->red.offset    = 0;
-		var->green.offset  = 0;
-		var->blue.offset   = 0;
-		var->transp.offset = 0;
-
-		var->red.length    = 8;
-		var->green.length  = 8;
-		var->blue.length   = 8;
-		var->transp.length = 0;
-	}
-}
-
-static int uvesafb_vbe_find_mode(struct uvesafb_par *par,
-		int xres, int yres, int depth, unsigned char flags)
-{
-	int i, match = -1, h = 0, d = 0x7fffffff;
-
-	for (i = 0; i < par->vbe_modes_cnt; i++) {
-		h = abs(par->vbe_modes[i].x_res - xres) +
-		    abs(par->vbe_modes[i].y_res - yres) +
-		    abs(depth - par->vbe_modes[i].depth);
-
-		/*
-		 * We have an exact match in terms of resolution
-		 * and depth.
-		 */
-		if (h == 0)
-			return i;
-
-		if (h < d || (h == d && par->vbe_modes[i].depth > depth)) {
-			d = h;
-			match = i;
-		}
-	}
-	i = 1;
-
-	if (flags & UVESAFB_EXACT_DEPTH &&
-			par->vbe_modes[match].depth != depth)
-		i = 0;
-
-	if (flags & UVESAFB_EXACT_RES && d > 24)
-		i = 0;
-
-	if (i != 0)
-		return match;
-	else
-		return -1;
-}
-
-static u8 *uvesafb_vbe_state_save(struct uvesafb_par *par)
-{
-	struct uvesafb_ktask *task;
-	u8 *state;
-	int err;
-
-	if (!par->vbe_state_size)
-		return NULL;
-
-	state = kmalloc(par->vbe_state_size, GFP_KERNEL);
-	if (!state)
-		return ERR_PTR(-ENOMEM);
-
-	task = uvesafb_prep();
-	if (!task) {
-		kfree(state);
-		return NULL;
-	}
-
-	task->t.regs.eax = 0x4f04;
-	task->t.regs.ecx = 0x000f;
-	task->t.regs.edx = 0x0001;
-	task->t.flags = TF_BUF_RET | TF_BUF_ESBX;
-	task->t.buf_len = par->vbe_state_size;
-	task->buf = state;
-	err = uvesafb_exec(task);
-
-	if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
-		printk(KERN_WARNING "uvesafb: VBE get state call "
-				"failed (eax=0x%x, err=%d)\n",
-				task->t.regs.eax, err);
-		kfree(state);
-		state = NULL;
-	}
-
-	uvesafb_free(task);
-	return state;
-}
-
-static void uvesafb_vbe_state_restore(struct uvesafb_par *par, u8 *state_buf)
-{
-	struct uvesafb_ktask *task;
-	int err;
-
-	if (!state_buf)
-		return;
-
-	task = uvesafb_prep();
-	if (!task)
-		return;
-
-	task->t.regs.eax = 0x4f04;
-	task->t.regs.ecx = 0x000f;
-	task->t.regs.edx = 0x0002;
-	task->t.buf_len = par->vbe_state_size;
-	task->t.flags = TF_BUF_ESBX;
-	task->buf = state_buf;
-
-	err = uvesafb_exec(task);
-	if (err || (task->t.regs.eax & 0xffff) != 0x004f)
-		printk(KERN_WARNING "uvesafb: VBE state restore call "
-				"failed (eax=0x%x, err=%d)\n",
-				task->t.regs.eax, err);
-
-	uvesafb_free(task);
-}
-
-static int uvesafb_vbe_getinfo(struct uvesafb_ktask *task,
-			       struct uvesafb_par *par)
-{
-	int err;
-
-	task->t.regs.eax = 0x4f00;
-	task->t.flags = TF_VBEIB;
-	task->t.buf_len = sizeof(struct vbe_ib);
-	task->buf = &par->vbe_ib;
-	strncpy(par->vbe_ib.vbe_signature, "VBE2", 4);
-
-	err = uvesafb_exec(task);
-	if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
-		printk(KERN_ERR "uvesafb: Getting VBE info block failed "
-				"(eax=0x%x, err=%d)\n", (u32)task->t.regs.eax,
-				err);
-		return -EINVAL;
-	}
-
-	if (par->vbe_ib.vbe_version < 0x0200) {
-		printk(KERN_ERR "uvesafb: Sorry, pre-VBE 2.0 cards are "
-				"not supported.\n");
-		return -EINVAL;
-	}
-
-	if (!par->vbe_ib.mode_list_ptr) {
-		printk(KERN_ERR "uvesafb: Missing mode list!\n");
-		return -EINVAL;
-	}
-
-	printk(KERN_INFO "uvesafb: ");
-
-	/*
-	 * Convert string pointers and the mode list pointer into
-	 * usable addresses. Print informational messages about the
-	 * video adapter and its vendor.
-	 */
-	if (par->vbe_ib.oem_vendor_name_ptr)
-		printk("%s, ",
-			((char *)task->buf) + par->vbe_ib.oem_vendor_name_ptr);
-
-	if (par->vbe_ib.oem_product_name_ptr)
-		printk("%s, ",
-			((char *)task->buf) + par->vbe_ib.oem_product_name_ptr);
-
-	if (par->vbe_ib.oem_product_rev_ptr)
-		printk("%s, ",
-			((char *)task->buf) + par->vbe_ib.oem_product_rev_ptr);
-
-	if (par->vbe_ib.oem_string_ptr)
-		printk("OEM: %s, ",
-			((char *)task->buf) + par->vbe_ib.oem_string_ptr);
-
-	printk("VBE v%d.%d\n", ((par->vbe_ib.vbe_version & 0xff00) >> 8),
-			par->vbe_ib.vbe_version & 0xff);
-
-	return 0;
-}
-
-static int uvesafb_vbe_getmodes(struct uvesafb_ktask *task,
-				struct uvesafb_par *par)
-{
-	int off = 0, err;
-	u16 *mode;
-
-	par->vbe_modes_cnt = 0;
-
-	/* Count available modes. */
-	mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr);
-	while (*mode != 0xffff) {
-		par->vbe_modes_cnt++;
-		mode++;
-	}
-
-	par->vbe_modes = kzalloc(sizeof(struct vbe_mode_ib) *
-				par->vbe_modes_cnt, GFP_KERNEL);
-	if (!par->vbe_modes)
-		return -ENOMEM;
-
-	/* Get info about all available modes. */
-	mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr);
-	while (*mode != 0xffff) {
-		struct vbe_mode_ib *mib;
-
-		uvesafb_reset(task);
-		task->t.regs.eax = 0x4f01;
-		task->t.regs.ecx = (u32) *mode;
-		task->t.flags = TF_BUF_RET | TF_BUF_ESDI;
-		task->t.buf_len = sizeof(struct vbe_mode_ib);
-		task->buf = par->vbe_modes + off;
-
-		err = uvesafb_exec(task);
-		if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
-			printk(KERN_WARNING "uvesafb: Getting mode info block "
-				"for mode 0x%x failed (eax=0x%x, err=%d)\n",
-				*mode, (u32)task->t.regs.eax, err);
-			mode++;
-			par->vbe_modes_cnt--;
-			continue;
-		}
-
-		mib = task->buf;
-		mib->mode_id = *mode;
-
-		/*
-		 * We only want modes that are supported with the current
-		 * hardware configuration, color, graphics and that have
-		 * support for the LFB.
-		 */
-		if ((mib->mode_attr & VBE_MODE_MASK) == VBE_MODE_MASK &&
-				 mib->bits_per_pixel >= 8)
-			off++;
-		else
-			par->vbe_modes_cnt--;
-
-		mode++;
-		mib->depth = mib->red_len + mib->green_len + mib->blue_len;
-
-		/*
-		 * Handle 8bpp modes and modes with broken color component
-		 * lengths.
-		 */
-		if (mib->depth == 0 || (mib->depth == 24 &&
-					mib->bits_per_pixel == 32))
-			mib->depth = mib->bits_per_pixel;
-	}
-
-	if (par->vbe_modes_cnt > 0)
-		return 0;
-	else
-		return -EINVAL;
-}
-
-/*
- * The Protected Mode Interface is 32-bit x86 code, so we only run it on
- * x86 and not x86_64.
- */
-#ifdef CONFIG_X86_32
-static int uvesafb_vbe_getpmi(struct uvesafb_ktask *task,
-			      struct uvesafb_par *par)
-{
-	int i, err;
-
-	uvesafb_reset(task);
-	task->t.regs.eax = 0x4f0a;
-	task->t.regs.ebx = 0x0;
-	err = uvesafb_exec(task);
-
-	if ((task->t.regs.eax & 0xffff) != 0x4f || task->t.regs.es < 0xc000) {
-		par->pmi_setpal = par->ypan = 0;
-	} else {
-		par->pmi_base = (u16 *)phys_to_virt(((u32)task->t.regs.es << 4)
-						+ task->t.regs.edi);
-		par->pmi_start = (u8 *)par->pmi_base + par->pmi_base[1];
-		par->pmi_pal = (u8 *)par->pmi_base + par->pmi_base[2];
-		printk(KERN_INFO "uvesafb: protected mode interface info at "
-				 "%04x:%04x\n",
-				 (u16)task->t.regs.es, (u16)task->t.regs.edi);
-		printk(KERN_INFO "uvesafb: pmi: set display start = %p, "
-				 "set palette = %p\n", par->pmi_start,
-				 par->pmi_pal);
-
-		if (par->pmi_base[3]) {
-			printk(KERN_INFO "uvesafb: pmi: ports = ");
-			for (i = par->pmi_base[3]/2;
-					par->pmi_base[i] != 0xffff; i++)
-				printk("%x ", par->pmi_base[i]);
-			printk("\n");
-
-			if (par->pmi_base[i] != 0xffff) {
-				printk(KERN_INFO "uvesafb: can't handle memory"
-						 " requests, pmi disabled\n");
-				par->ypan = par->pmi_setpal = 0;
-			}
-		}
-	}
-	return 0;
-}
-#endif /* CONFIG_X86_32 */
-
-/*
- * Check whether a video mode is supported by the Video BIOS and is
- * compatible with the monitor limits.
- */
-static int uvesafb_is_valid_mode(struct fb_videomode *mode,
-				 struct fb_info *info)
-{
-	if (info->monspecs.gtf) {
-		fb_videomode_to_var(&info->var, mode);
-		if (fb_validate_mode(&info->var, info))
-			return 0;
-	}
-
-	if (uvesafb_vbe_find_mode(info->par, mode->xres, mode->yres, 8,
-				UVESAFB_EXACT_RES) == -1)
-		return 0;
-
-	return 1;
-}
-
-static int uvesafb_vbe_getedid(struct uvesafb_ktask *task, struct fb_info *info)
-{
-	struct uvesafb_par *par = info->par;
-	int err = 0;
-
-	if (noedid || par->vbe_ib.vbe_version < 0x0300)
-		return -EINVAL;
-
-	task->t.regs.eax = 0x4f15;
-	task->t.regs.ebx = 0;
-	task->t.regs.ecx = 0;
-	task->t.buf_len = 0;
-	task->t.flags = 0;
-
-	err = uvesafb_exec(task);
-
-	if ((task->t.regs.eax & 0xffff) != 0x004f || err)
-		return -EINVAL;
-
-	if ((task->t.regs.ebx & 0x3) == 3) {
-		printk(KERN_INFO "uvesafb: VBIOS/hardware supports both "
-				 "DDC1 and DDC2 transfers\n");
-	} else if ((task->t.regs.ebx & 0x3) == 2) {
-		printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC2 "
-				 "transfers\n");
-	} else if ((task->t.regs.ebx & 0x3) == 1) {
-		printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC1 "
-				 "transfers\n");
-	} else {
-		printk(KERN_INFO "uvesafb: VBIOS/hardware doesn't support "
-				 "DDC transfers\n");
-		return -EINVAL;
-	}
-
-	task->t.regs.eax = 0x4f15;
-	task->t.regs.ebx = 1;
-	task->t.regs.ecx = task->t.regs.edx = 0;
-	task->t.flags = TF_BUF_RET | TF_BUF_ESDI;
-	task->t.buf_len = EDID_LENGTH;
-	task->buf = kzalloc(EDID_LENGTH, GFP_KERNEL);
-	if (!task->buf)
-		return -ENOMEM;
-
-	err = uvesafb_exec(task);
-
-	if ((task->t.regs.eax & 0xffff) == 0x004f && !err) {
-		fb_edid_to_monspecs(task->buf, &info->monspecs);
-
-		if (info->monspecs.vfmax && info->monspecs.hfmax) {
-			/*
-			 * If the maximum pixel clock wasn't specified in
-			 * the EDID block, set it to 300 MHz.
-			 */
-			if (info->monspecs.dclkmax == 0)
-				info->monspecs.dclkmax = 300 * 1000000;
-			info->monspecs.gtf = 1;
-		}
-	} else {
-		err = -EINVAL;
-	}
-
-	kfree(task->buf);
-	return err;
-}
-
-static void uvesafb_vbe_getmonspecs(struct uvesafb_ktask *task,
-				    struct fb_info *info)
-{
-	struct uvesafb_par *par = info->par;
-	int i;
-
-	memset(&info->monspecs, 0, sizeof(info->monspecs));
-
-	/*
-	 * If we don't get all necessary data from the EDID block,
-	 * mark it as incompatible with the GTF and set nocrtc so
-	 * that we always use the default BIOS refresh rate.
-	 */
-	if (uvesafb_vbe_getedid(task, info)) {
-		info->monspecs.gtf = 0;
-		par->nocrtc = 1;
-	}
-
-	/* Kernel command line overrides. */
-	if (maxclk)
-		info->monspecs.dclkmax = maxclk * 1000000;
-	if (maxvf)
-		info->monspecs.vfmax = maxvf;
-	if (maxhf)
-		info->monspecs.hfmax = maxhf * 1000;
-
-	/*
-	 * In case DDC transfers are not supported, the user can provide
-	 * monitor limits manually. Lower limits are set to "safe" values.
-	 */
-	if (info->monspecs.gtf == 0 && maxclk && maxvf && maxhf) {
-		info->monspecs.dclkmin = 0;
-		info->monspecs.vfmin = 60;
-		info->monspecs.hfmin = 29000;
-		info->monspecs.gtf = 1;
-		par->nocrtc = 0;
-	}
-
-	if (info->monspecs.gtf)
-		printk(KERN_INFO
-			"uvesafb: monitor limits: vf = %d Hz, hf = %d kHz, "
-			"clk = %d MHz\n", info->monspecs.vfmax,
-			(int)(info->monspecs.hfmax / 1000),
-			(int)(info->monspecs.dclkmax / 1000000));
-	else
-		printk(KERN_INFO "uvesafb: no monitor limits have been set, "
-				 "default refresh rate will be used\n");
-
-	/* Add VBE modes to the modelist. */
-	for (i = 0; i < par->vbe_modes_cnt; i++) {
-		struct fb_var_screeninfo var;
-		struct vbe_mode_ib *mode;
-		struct fb_videomode vmode;
-
-		mode = &par->vbe_modes[i];
-		memset(&var, 0, sizeof(var));
-
-		var.xres = mode->x_res;
-		var.yres = mode->y_res;
-
-		fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, &var, info);
-		fb_var_to_videomode(&vmode, &var);
-		fb_add_videomode(&vmode, &info->modelist);
-	}
-
-	/* Add valid VESA modes to our modelist. */
-	for (i = 0; i < VESA_MODEDB_SIZE; i++) {
-		if (uvesafb_is_valid_mode((struct fb_videomode *)
-						&vesa_modes[i], info))
-			fb_add_videomode(&vesa_modes[i], &info->modelist);
-	}
-
-	for (i = 0; i < info->monspecs.modedb_len; i++) {
-		if (uvesafb_is_valid_mode(&info->monspecs.modedb[i], info))
-			fb_add_videomode(&info->monspecs.modedb[i],
-					&info->modelist);
-	}
-
-	return;
-}
-
-static void uvesafb_vbe_getstatesize(struct uvesafb_ktask *task,
-				     struct uvesafb_par *par)
-{
-	int err;
-
-	uvesafb_reset(task);
-
-	/*
-	 * Get the VBE state buffer size. We want all available
-	 * hardware state data (CL = 0x0f).
-	 */
-	task->t.regs.eax = 0x4f04;
-	task->t.regs.ecx = 0x000f;
-	task->t.regs.edx = 0x0000;
-	task->t.flags = 0;
-
-	err = uvesafb_exec(task);
-
-	if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
-		printk(KERN_WARNING "uvesafb: VBE state buffer size "
-			"cannot be determined (eax=0x%x, err=%d)\n",
-			task->t.regs.eax, err);
-		par->vbe_state_size = 0;
-		return;
-	}
-
-	par->vbe_state_size = 64 * (task->t.regs.ebx & 0xffff);
-}
-
-static int uvesafb_vbe_init(struct fb_info *info)
-{
-	struct uvesafb_ktask *task = NULL;
-	struct uvesafb_par *par = info->par;
-	int err;
-
-	task = uvesafb_prep();
-	if (!task)
-		return -ENOMEM;
-
-	err = uvesafb_vbe_getinfo(task, par);
-	if (err)
-		goto out;
-
-	err = uvesafb_vbe_getmodes(task, par);
-	if (err)
-		goto out;
-
-	par->nocrtc = nocrtc;
-#ifdef CONFIG_X86_32
-	par->pmi_setpal = pmi_setpal;
-	par->ypan = ypan;
-
-	if (par->pmi_setpal || par->ypan) {
-		if (__supported_pte_mask & _PAGE_NX) {
-			par->pmi_setpal = par->ypan = 0;
-			printk(KERN_WARNING "uvesafb: NX protection is active, "
-					    "better not use the PMI.\n");
-		} else {
-			uvesafb_vbe_getpmi(task, par);
-		}
-	}
-#else
-	/* The protected mode interface is not available on non-x86. */
-	par->pmi_setpal = par->ypan = 0;
-#endif
-
-	INIT_LIST_HEAD(&info->modelist);
-	uvesafb_vbe_getmonspecs(task, info);
-	uvesafb_vbe_getstatesize(task, par);
-
-out:	uvesafb_free(task);
-	return err;
-}
-
-static int uvesafb_vbe_init_mode(struct fb_info *info)
-{
-	struct list_head *pos;
-	struct fb_modelist *modelist;
-	struct fb_videomode *mode;
-	struct uvesafb_par *par = info->par;
-	int i, modeid;
-
-	/* Has the user requested a specific VESA mode? */
-	if (vbemode) {
-		for (i = 0; i < par->vbe_modes_cnt; i++) {
-			if (par->vbe_modes[i].mode_id == vbemode) {
-				modeid = i;
-				uvesafb_setup_var(&info->var, info,
-						&par->vbe_modes[modeid]);
-				fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60,
-						&info->var, info);
-				/*
-				 * With pixclock set to 0, the default BIOS
-				 * timings will be used in set_par().
-				 */
-				info->var.pixclock = 0;
-				goto gotmode;
-			}
-		}
-		printk(KERN_INFO "uvesafb: requested VBE mode 0x%x is "
-				 "unavailable\n", vbemode);
-		vbemode = 0;
-	}
-
-	/* Count the modes in the modelist */
-	i = 0;
-	list_for_each(pos, &info->modelist)
-		i++;
-
-	/*
-	 * Convert the modelist into a modedb so that we can use it with
-	 * fb_find_mode().
-	 */
-	mode = kzalloc(i * sizeof(*mode), GFP_KERNEL);
-	if (mode) {
-		i = 0;
-		list_for_each(pos, &info->modelist) {
-			modelist = list_entry(pos, struct fb_modelist, list);
-			mode[i] = modelist->mode;
-			i++;
-		}
-
-		if (!mode_option)
-			mode_option = UVESAFB_DEFAULT_MODE;
-
-		i = fb_find_mode(&info->var, info, mode_option, mode, i,
-			NULL, 8);
-
-		kfree(mode);
-	}
-
-	/* fb_find_mode() failed */
-	if (i == 0) {
-		info->var.xres = 640;
-		info->var.yres = 480;
-		mode = (struct fb_videomode *)
-				fb_find_best_mode(&info->var, &info->modelist);
-
-		if (mode) {
-			fb_videomode_to_var(&info->var, mode);
-		} else {
-			modeid = par->vbe_modes[0].mode_id;
-			uvesafb_setup_var(&info->var, info,
-					&par->vbe_modes[modeid]);
-			fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60,
-					&info->var, info);
-
-			goto gotmode;
-		}
-	}
-
-	/* Look for a matching VBE mode. */
-	modeid = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres,
-			info->var.bits_per_pixel, UVESAFB_EXACT_RES);
-
-	if (modeid == -1)
-		return -EINVAL;
-
-	uvesafb_setup_var(&info->var, info, &par->vbe_modes[modeid]);
-
-gotmode:
-	/*
-	 * If we are not VBE3.0+ compliant, we're done -- the BIOS will
-	 * ignore our timings anyway.
-	 */
-	if (par->vbe_ib.vbe_version < 0x0300 || par->nocrtc)
-		fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60,
-					&info->var, info);
-
-	return modeid;
-}
-
-static int uvesafb_setpalette(struct uvesafb_pal_entry *entries, int count,
-		int start, struct fb_info *info)
-{
-	struct uvesafb_ktask *task;
-#ifdef CONFIG_X86
-	struct uvesafb_par *par = info->par;
-	int i = par->mode_idx;
-#endif
-	int err = 0;
-
-	/*
-	 * We support palette modifications for 8 bpp modes only, so
-	 * there can never be more than 256 entries.
-	 */
-	if (start + count > 256)
-		return -EINVAL;
-
-#ifdef CONFIG_X86
-	/* Use VGA registers if mode is VGA-compatible. */
-	if (i >= 0 && i < par->vbe_modes_cnt &&
-	    par->vbe_modes[i].mode_attr & VBE_MODE_VGACOMPAT) {
-		for (i = 0; i < count; i++) {
-			outb_p(start + i,        dac_reg);
-			outb_p(entries[i].red,   dac_val);
-			outb_p(entries[i].green, dac_val);
-			outb_p(entries[i].blue,  dac_val);
-		}
-	}
-#ifdef CONFIG_X86_32
-	else if (par->pmi_setpal) {
-		__asm__ __volatile__(
-		"call *(%%esi)"
-		: /* no return value */
-		: "a" (0x4f09),         /* EAX */
-		  "b" (0),              /* EBX */
-		  "c" (count),          /* ECX */
-		  "d" (start),          /* EDX */
-		  "D" (entries),        /* EDI */
-		  "S" (&par->pmi_pal)); /* ESI */
-	}
-#endif /* CONFIG_X86_32 */
-	else
-#endif /* CONFIG_X86 */
-	{
-		task = uvesafb_prep();
-		if (!task)
-			return -ENOMEM;
-
-		task->t.regs.eax = 0x4f09;
-		task->t.regs.ebx = 0x0;
-		task->t.regs.ecx = count;
-		task->t.regs.edx = start;
-		task->t.flags = TF_BUF_ESDI;
-		task->t.buf_len = sizeof(struct uvesafb_pal_entry) * count;
-		task->buf = entries;
-
-		err = uvesafb_exec(task);
-		if ((task->t.regs.eax & 0xffff) != 0x004f)
-			err = 1;
-
-		uvesafb_free(task);
-	}
-	return err;
-}
-
-static int uvesafb_setcolreg(unsigned regno, unsigned red, unsigned green,
-		unsigned blue, unsigned transp,
-		struct fb_info *info)
-{
-	struct uvesafb_pal_entry entry;
-	int shift = 16 - dac_width;
-	int err = 0;
-
-	if (regno >= info->cmap.len)
-		return -EINVAL;
-
-	if (info->var.bits_per_pixel == 8) {
-		entry.red   = red   >> shift;
-		entry.green = green >> shift;
-		entry.blue  = blue  >> shift;
-		entry.pad   = 0;
-
-		err = uvesafb_setpalette(&entry, 1, regno, info);
-	} else if (regno < 16) {
-		switch (info->var.bits_per_pixel) {
-		case 16:
-			if (info->var.red.offset == 10) {
-				/* 1:5:5:5 */
-				((u32 *) (info->pseudo_palette))[regno] =
-						((red   & 0xf800) >>  1) |
-						((green & 0xf800) >>  6) |
-						((blue  & 0xf800) >> 11);
-			} else {
-				/* 0:5:6:5 */
-				((u32 *) (info->pseudo_palette))[regno] =
-						((red   & 0xf800)      ) |
-						((green & 0xfc00) >>  5) |
-						((blue  & 0xf800) >> 11);
-			}
-			break;
-
-		case 24:
-		case 32:
-			red   >>= 8;
-			green >>= 8;
-			blue  >>= 8;
-			((u32 *)(info->pseudo_palette))[regno] =
-				(red   << info->var.red.offset)   |
-				(green << info->var.green.offset) |
-				(blue  << info->var.blue.offset);
-			break;
-		}
-	}
-	return err;
-}
-
-static int uvesafb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
-{
-	struct uvesafb_pal_entry *entries;
-	int shift = 16 - dac_width;
-	int i, err = 0;
-
-	if (info->var.bits_per_pixel == 8) {
-		if (cmap->start + cmap->len > info->cmap.start +
-		    info->cmap.len || cmap->start < info->cmap.start)
-			return -EINVAL;
-
-		entries = kmalloc(sizeof(*entries) * cmap->len, GFP_KERNEL);
-		if (!entries)
-			return -ENOMEM;
-
-		for (i = 0; i < cmap->len; i++) {
-			entries[i].red   = cmap->red[i]   >> shift;
-			entries[i].green = cmap->green[i] >> shift;
-			entries[i].blue  = cmap->blue[i]  >> shift;
-			entries[i].pad   = 0;
-		}
-		err = uvesafb_setpalette(entries, cmap->len, cmap->start, info);
-		kfree(entries);
-	} else {
-		/*
-		 * For modes with bpp > 8, we only set the pseudo palette in
-		 * the fb_info struct. We rely on uvesafb_setcolreg to do all
-		 * sanity checking.
-		 */
-		for (i = 0; i < cmap->len; i++) {
-			err |= uvesafb_setcolreg(cmap->start + i, cmap->red[i],
-						cmap->green[i], cmap->blue[i],
-						0, info);
-		}
-	}
-	return err;
-}
-
-static int uvesafb_pan_display(struct fb_var_screeninfo *var,
-		struct fb_info *info)
-{
-#ifdef CONFIG_X86_32
-	int offset;
-	struct uvesafb_par *par = info->par;
-
-	offset = (var->yoffset * info->fix.line_length + var->xoffset) / 4;
-
-	/*
-	 * It turns out it's not the best idea to do panning via vm86,
-	 * so we only allow it if we have a PMI.
-	 */
-	if (par->pmi_start) {
-		__asm__ __volatile__(
-			"call *(%%edi)"
-			: /* no return value */
-			: "a" (0x4f07),         /* EAX */
-			  "b" (0),              /* EBX */
-			  "c" (offset),         /* ECX */
-			  "d" (offset >> 16),   /* EDX */
-			  "D" (&par->pmi_start));    /* EDI */
-	}
-#endif
-	return 0;
-}
-
-static int uvesafb_blank(int blank, struct fb_info *info)
-{
-	struct uvesafb_ktask *task;
-	int err = 1;
-#ifdef CONFIG_X86
-	struct uvesafb_par *par = info->par;
-
-	if (par->vbe_ib.capabilities & VBE_CAP_VGACOMPAT) {
-		int loop = 10000;
-		u8 seq = 0, crtc17 = 0;
-
-		if (blank == FB_BLANK_POWERDOWN) {
-			seq = 0x20;
-			crtc17 = 0x00;
-			err = 0;
-		} else {
-			seq = 0x00;
-			crtc17 = 0x80;
-			err = (blank == FB_BLANK_UNBLANK) ? 0 : -EINVAL;
-		}
-
-		vga_wseq(NULL, 0x00, 0x01);
-		seq |= vga_rseq(NULL, 0x01) & ~0x20;
-		vga_wseq(NULL, 0x00, seq);
-
-		crtc17 |= vga_rcrt(NULL, 0x17) & ~0x80;
-		while (loop--);
-		vga_wcrt(NULL, 0x17, crtc17);
-		vga_wseq(NULL, 0x00, 0x03);
-	} else
-#endif /* CONFIG_X86 */
-	{
-		task = uvesafb_prep();
-		if (!task)
-			return -ENOMEM;
-
-		task->t.regs.eax = 0x4f10;
-		switch (blank) {
-		case FB_BLANK_UNBLANK:
-			task->t.regs.ebx = 0x0001;
-			break;
-		case FB_BLANK_NORMAL:
-			task->t.regs.ebx = 0x0101;	/* standby */
-			break;
-		case FB_BLANK_POWERDOWN:
-			task->t.regs.ebx = 0x0401;	/* powerdown */
-			break;
-		default:
-			goto out;
-		}
-
-		err = uvesafb_exec(task);
-		if (err || (task->t.regs.eax & 0xffff) != 0x004f)
-			err = 1;
-out:		uvesafb_free(task);
-	}
-	return err;
-}
-
-static int uvesafb_open(struct fb_info *info, int user)
-{
-	struct uvesafb_par *par = info->par;
-	int cnt = atomic_read(&par->ref_count);
-	u8 *buf = NULL;
-
-	if (!cnt && par->vbe_state_size) {
-		buf =  uvesafb_vbe_state_save(par);
-		if (IS_ERR(buf)) {
-			printk(KERN_WARNING "uvesafb: save hardware state"
-				"failed, error code is %ld!\n", PTR_ERR(buf));
-		} else {
-			par->vbe_state_orig = buf;
-		}
-	}
-
-	atomic_inc(&par->ref_count);
-	return 0;
-}
-
-static int uvesafb_release(struct fb_info *info, int user)
-{
-	struct uvesafb_ktask *task = NULL;
-	struct uvesafb_par *par = info->par;
-	int cnt = atomic_read(&par->ref_count);
-
-	if (!cnt)
-		return -EINVAL;
-
-	if (cnt != 1)
-		goto out;
-
-	task = uvesafb_prep();
-	if (!task)
-		goto out;
-
-	/* First, try to set the standard 80x25 text mode. */
-	task->t.regs.eax = 0x0003;
-	uvesafb_exec(task);
-
-	/*
-	 * Now try to restore whatever hardware state we might have
-	 * saved when the fb device was first opened.
-	 */
-	uvesafb_vbe_state_restore(par, par->vbe_state_orig);
-out:
-	atomic_dec(&par->ref_count);
-	if (task)
-		uvesafb_free(task);
-	return 0;
-}
-
-static int uvesafb_set_par(struct fb_info *info)
-{
-	struct uvesafb_par *par = info->par;
-	struct uvesafb_ktask *task = NULL;
-	struct vbe_crtc_ib *crtc = NULL;
-	struct vbe_mode_ib *mode = NULL;
-	int i, err = 0, depth = info->var.bits_per_pixel;
-
-	if (depth > 8 && depth != 32)
-		depth = info->var.red.length + info->var.green.length +
-			info->var.blue.length;
-
-	i = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres, depth,
-				 UVESAFB_EXACT_RES | UVESAFB_EXACT_DEPTH);
-	if (i >= 0)
-		mode = &par->vbe_modes[i];
-	else
-		return -EINVAL;
-
-	task = uvesafb_prep();
-	if (!task)
-		return -ENOMEM;
-setmode:
-	task->t.regs.eax = 0x4f02;
-	task->t.regs.ebx = mode->mode_id | 0x4000;	/* use LFB */
-
-	if (par->vbe_ib.vbe_version >= 0x0300 && !par->nocrtc &&
-	    info->var.pixclock != 0) {
-		task->t.regs.ebx |= 0x0800;		/* use CRTC data */
-		task->t.flags = TF_BUF_ESDI;
-		crtc = kzalloc(sizeof(struct vbe_crtc_ib), GFP_KERNEL);
-		if (!crtc) {
-			err = -ENOMEM;
-			goto out;
-		}
-		crtc->horiz_start = info->var.xres + info->var.right_margin;
-		crtc->horiz_end	  = crtc->horiz_start + info->var.hsync_len;
-		crtc->horiz_total = crtc->horiz_end + info->var.left_margin;
-
-		crtc->vert_start  = info->var.yres + info->var.lower_margin;
-		crtc->vert_end    = crtc->vert_start + info->var.vsync_len;
-		crtc->vert_total  = crtc->vert_end + info->var.upper_margin;
-
-		crtc->pixel_clock = PICOS2KHZ(info->var.pixclock) * 1000;
-		crtc->refresh_rate = (u16)(100 * (crtc->pixel_clock /
-				(crtc->vert_total * crtc->horiz_total)));
-
-		if (info->var.vmode & FB_VMODE_DOUBLE)
-			crtc->flags |= 0x1;
-		if (info->var.vmode & FB_VMODE_INTERLACED)
-			crtc->flags |= 0x2;
-		if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
-			crtc->flags |= 0x4;
-		if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
-			crtc->flags |= 0x8;
-		memcpy(&par->crtc, crtc, sizeof(*crtc));
-	} else {
-		memset(&par->crtc, 0, sizeof(*crtc));
-	}
-
-	task->t.buf_len = sizeof(struct vbe_crtc_ib);
-	task->buf = &par->crtc;
-
-	err = uvesafb_exec(task);
-	if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
-		/*
-		 * The mode switch might have failed because we tried to
-		 * use our own timings.  Try again with the default timings.
-		 */
-		if (crtc != NULL) {
-			printk(KERN_WARNING "uvesafb: mode switch failed "
-				"(eax=0x%x, err=%d). Trying again with "
-				"default timings.\n", task->t.regs.eax, err);
-			uvesafb_reset(task);
-			kfree(crtc);
-			crtc = NULL;
-			info->var.pixclock = 0;
-			goto setmode;
-		} else {
-			printk(KERN_ERR "uvesafb: mode switch failed (eax="
-				"0x%x, err=%d)\n", task->t.regs.eax, err);
-			err = -EINVAL;
-			goto out;
-		}
-	}
-	par->mode_idx = i;
-
-	/* For 8bpp modes, always try to set the DAC to 8 bits. */
-	if (par->vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC &&
-	    mode->bits_per_pixel <= 8) {
-		uvesafb_reset(task);
-		task->t.regs.eax = 0x4f08;
-		task->t.regs.ebx = 0x0800;
-
-		err = uvesafb_exec(task);
-		if (err || (task->t.regs.eax & 0xffff) != 0x004f ||
-		    ((task->t.regs.ebx & 0xff00) >> 8) != 8) {
-			dac_width = 6;
-		} else {
-			dac_width = 8;
-		}
-	}
-
-	info->fix.visual = (info->var.bits_per_pixel == 8) ?
-				FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
-	info->fix.line_length = mode->bytes_per_scan_line;
-
-out:
-	kfree(crtc);
-	uvesafb_free(task);
-
-	return err;
-}
-
-static void uvesafb_check_limits(struct fb_var_screeninfo *var,
-		struct fb_info *info)
-{
-	const struct fb_videomode *mode;
-	struct uvesafb_par *par = info->par;
-
-	/*
-	 * If pixclock is set to 0, then we're using default BIOS timings
-	 * and thus don't have to perform any checks here.
-	 */
-	if (!var->pixclock)
-		return;
-
-	if (par->vbe_ib.vbe_version < 0x0300) {
-		fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, var, info);
-		return;
-	}
-
-	if (!fb_validate_mode(var, info))
-		return;
-
-	mode = fb_find_best_mode(var, &info->modelist);
-	if (mode) {
-		if (mode->xres == var->xres && mode->yres == var->yres &&
-		    !(mode->vmode & (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE))) {
-			fb_videomode_to_var(var, mode);
-			return;
-		}
-	}
-
-	if (info->monspecs.gtf && !fb_get_mode(FB_MAXTIMINGS, 0, var, info))
-		return;
-	/* Use default refresh rate */
-	var->pixclock = 0;
-}
-
-static int uvesafb_check_var(struct fb_var_screeninfo *var,
-		struct fb_info *info)
-{
-	struct uvesafb_par *par = info->par;
-	struct vbe_mode_ib *mode = NULL;
-	int match = -1;
-	int depth = var->red.length + var->green.length + var->blue.length;
-
-	/*
-	 * Various apps will use bits_per_pixel to set the color depth,
-	 * which is theoretically incorrect, but which we'll try to handle
-	 * here.
-	 */
-	if (depth == 0 || abs(depth - var->bits_per_pixel) >= 8)
-		depth = var->bits_per_pixel;
-
-	match = uvesafb_vbe_find_mode(par, var->xres, var->yres, depth,
-						UVESAFB_EXACT_RES);
-	if (match == -1)
-		return -EINVAL;
-
-	mode = &par->vbe_modes[match];
-	uvesafb_setup_var(var, info, mode);
-
-	/*
-	 * Check whether we have remapped enough memory for this mode.
-	 * We might be called at an early stage, when we haven't remapped
-	 * any memory yet, in which case we simply skip the check.
-	 */
-	if (var->yres * mode->bytes_per_scan_line > info->fix.smem_len
-						&& info->fix.smem_len)
-		return -EINVAL;
-
-	if ((var->vmode & FB_VMODE_DOUBLE) &&
-				!(par->vbe_modes[match].mode_attr & 0x100))
-		var->vmode &= ~FB_VMODE_DOUBLE;
-
-	if ((var->vmode & FB_VMODE_INTERLACED) &&
-				!(par->vbe_modes[match].mode_attr & 0x200))
-		var->vmode &= ~FB_VMODE_INTERLACED;
-
-	uvesafb_check_limits(var, info);
-
-	var->xres_virtual = var->xres;
-	var->yres_virtual = (par->ypan) ?
-				info->fix.smem_len / mode->bytes_per_scan_line :
-				var->yres;
-	return 0;
-}
-
-static struct fb_ops uvesafb_ops = {
-	.owner		= THIS_MODULE,
-	.fb_open	= uvesafb_open,
-	.fb_release	= uvesafb_release,
-	.fb_setcolreg	= uvesafb_setcolreg,
-	.fb_setcmap	= uvesafb_setcmap,
-	.fb_pan_display	= uvesafb_pan_display,
-	.fb_blank	= uvesafb_blank,
-	.fb_fillrect	= cfb_fillrect,
-	.fb_copyarea	= cfb_copyarea,
-	.fb_imageblit	= cfb_imageblit,
-	.fb_check_var	= uvesafb_check_var,
-	.fb_set_par	= uvesafb_set_par,
-};
-
-static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
-{
-	unsigned int size_vmode;
-	unsigned int size_remap;
-	unsigned int size_total;
-	struct uvesafb_par *par = info->par;
-	int i, h;
-
-	info->pseudo_palette = ((u8 *)info->par + sizeof(struct uvesafb_par));
-	info->fix = uvesafb_fix;
-	info->fix.ypanstep = par->ypan ? 1 : 0;
-	info->fix.ywrapstep = (par->ypan > 1) ? 1 : 0;
-
-	/* Disable blanking if the user requested so. */
-	if (!blank)
-		info->fbops->fb_blank = NULL;
-
-	/*
-	 * Find out how much IO memory is required for the mode with
-	 * the highest resolution.
-	 */
-	size_remap = 0;
-	for (i = 0; i < par->vbe_modes_cnt; i++) {
-		h = par->vbe_modes[i].bytes_per_scan_line *
-					par->vbe_modes[i].y_res;
-		if (h > size_remap)
-			size_remap = h;
-	}
-	size_remap *= 2;
-
-	/*
-	 *   size_vmode -- that is the amount of memory needed for the
-	 *                 used video mode, i.e. the minimum amount of
-	 *                 memory we need.
-	 */
-	size_vmode = info->var.yres * mode->bytes_per_scan_line;
-
-	/*
-	 *   size_total -- all video memory we have. Used for mtrr
-	 *                 entries, resource allocation and bounds
-	 *                 checking.
-	 */
-	size_total = par->vbe_ib.total_memory * 65536;
-	if (vram_total)
-		size_total = vram_total * 1024 * 1024;
-	if (size_total < size_vmode)
-		size_total = size_vmode;
-
-	/*
-	 *   size_remap -- the amount of video memory we are going to
-	 *                 use for vesafb.  With modern cards it is no
-	 *                 option to simply use size_total as th
-	 *                 wastes plenty of kernel address space.
-	 */
-	if (vram_remap)
-		size_remap = vram_remap * 1024 * 1024;
-	if (size_remap < size_vmode)
-		size_remap = size_vmode;
-	if (size_remap > size_total)
-		size_remap = size_total;
-
-	info->fix.smem_len = size_remap;
-	info->fix.smem_start = mode->phys_base_ptr;
-
-	/*
-	 * We have to set yres_virtual here because when setup_var() was
-	 * called, smem_len wasn't defined yet.
-	 */
-	info->var.yres_virtual = info->fix.smem_len /
-				 mode->bytes_per_scan_line;
-
-	if (par->ypan && info->var.yres_virtual > info->var.yres) {
-		printk(KERN_INFO "uvesafb: scrolling: %s "
-			"using protected mode interface, "
-			"yres_virtual=%d\n",
-			(par->ypan > 1) ? "ywrap" : "ypan",
-			info->var.yres_virtual);
-	} else {
-		printk(KERN_INFO "uvesafb: scrolling: redraw\n");
-		info->var.yres_virtual = info->var.yres;
-		par->ypan = 0;
-	}
-
-	info->flags = FBINFO_FLAG_DEFAULT |
-			(par->ypan ? FBINFO_HWACCEL_YPAN : 0);
-
-	if (!par->ypan)
-		info->fbops->fb_pan_display = NULL;
-}
-
-static void uvesafb_init_mtrr(struct fb_info *info)
-{
-	struct uvesafb_par *par = info->par;
-
-	if (mtrr && !(info->fix.smem_start & (PAGE_SIZE - 1))) {
-		int temp_size = info->fix.smem_len;
-
-		int rc;
-
-		/* Find the largest power-of-two */
-		temp_size = roundup_pow_of_two(temp_size);
-
-		/* Try and find a power of two to add */
-		do {
-			rc = arch_phys_wc_add(info->fix.smem_start, temp_size);
-			temp_size >>= 1;
-		} while (temp_size >= PAGE_SIZE && rc == -EINVAL);
-
-		if (rc >= 0)
-			par->mtrr_handle = rc;
-	}
-}
-
-static void uvesafb_ioremap(struct fb_info *info)
-{
-	info->screen_base = ioremap_wc(info->fix.smem_start, info->fix.smem_len);
-}
-
-static ssize_t uvesafb_show_vbe_ver(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
-	struct uvesafb_par *par = info->par;
-
-	return snprintf(buf, PAGE_SIZE, "%.4x\n", par->vbe_ib.vbe_version);
-}
-
-static DEVICE_ATTR(vbe_version, S_IRUGO, uvesafb_show_vbe_ver, NULL);
-
-static ssize_t uvesafb_show_vbe_modes(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
-	struct uvesafb_par *par = info->par;
-	int ret = 0, i;
-
-	for (i = 0; i < par->vbe_modes_cnt && ret < PAGE_SIZE; i++) {
-		ret += snprintf(buf + ret, PAGE_SIZE - ret,
-			"%dx%d-%d, 0x%.4x\n",
-			par->vbe_modes[i].x_res, par->vbe_modes[i].y_res,
-			par->vbe_modes[i].depth, par->vbe_modes[i].mode_id);
-	}
-
-	return ret;
-}
-
-static DEVICE_ATTR(vbe_modes, S_IRUGO, uvesafb_show_vbe_modes, NULL);
-
-static ssize_t uvesafb_show_vendor(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
-	struct uvesafb_par *par = info->par;
-
-	if (par->vbe_ib.oem_vendor_name_ptr)
-		return snprintf(buf, PAGE_SIZE, "%s\n", (char *)
-			(&par->vbe_ib) + par->vbe_ib.oem_vendor_name_ptr);
-	else
-		return 0;
-}
-
-static DEVICE_ATTR(oem_vendor, S_IRUGO, uvesafb_show_vendor, NULL);
-
-static ssize_t uvesafb_show_product_name(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
-	struct uvesafb_par *par = info->par;
-
-	if (par->vbe_ib.oem_product_name_ptr)
-		return snprintf(buf, PAGE_SIZE, "%s\n", (char *)
-			(&par->vbe_ib) + par->vbe_ib.oem_product_name_ptr);
-	else
-		return 0;
-}
-
-static DEVICE_ATTR(oem_product_name, S_IRUGO, uvesafb_show_product_name, NULL);
-
-static ssize_t uvesafb_show_product_rev(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
-	struct uvesafb_par *par = info->par;
-
-	if (par->vbe_ib.oem_product_rev_ptr)
-		return snprintf(buf, PAGE_SIZE, "%s\n", (char *)
-			(&par->vbe_ib) + par->vbe_ib.oem_product_rev_ptr);
-	else
-		return 0;
-}
-
-static DEVICE_ATTR(oem_product_rev, S_IRUGO, uvesafb_show_product_rev, NULL);
-
-static ssize_t uvesafb_show_oem_string(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
-	struct uvesafb_par *par = info->par;
-
-	if (par->vbe_ib.oem_string_ptr)
-		return snprintf(buf, PAGE_SIZE, "%s\n",
-			(char *)(&par->vbe_ib) + par->vbe_ib.oem_string_ptr);
-	else
-		return 0;
-}
-
-static DEVICE_ATTR(oem_string, S_IRUGO, uvesafb_show_oem_string, NULL);
-
-static ssize_t uvesafb_show_nocrtc(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
-	struct uvesafb_par *par = info->par;
-
-	return snprintf(buf, PAGE_SIZE, "%d\n", par->nocrtc);
-}
-
-static ssize_t uvesafb_store_nocrtc(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
-	struct uvesafb_par *par = info->par;
-
-	if (count > 0) {
-		if (buf[0] == '0')
-			par->nocrtc = 0;
-		else
-			par->nocrtc = 1;
-	}
-	return count;
-}
-
-static DEVICE_ATTR(nocrtc, S_IRUGO | S_IWUSR, uvesafb_show_nocrtc,
-			uvesafb_store_nocrtc);
-
-static struct attribute *uvesafb_dev_attrs[] = {
-	&dev_attr_vbe_version.attr,
-	&dev_attr_vbe_modes.attr,
-	&dev_attr_oem_vendor.attr,
-	&dev_attr_oem_product_name.attr,
-	&dev_attr_oem_product_rev.attr,
-	&dev_attr_oem_string.attr,
-	&dev_attr_nocrtc.attr,
-	NULL,
-};
-
-static struct attribute_group uvesafb_dev_attgrp = {
-	.name = NULL,
-	.attrs = uvesafb_dev_attrs,
-};
-
-static int uvesafb_probe(struct platform_device *dev)
-{
-	struct fb_info *info;
-	struct vbe_mode_ib *mode = NULL;
-	struct uvesafb_par *par;
-	int err = 0, i;
-
-	info = framebuffer_alloc(sizeof(*par) +	sizeof(u32) * 256, &dev->dev);
-	if (!info)
-		return -ENOMEM;
-
-	par = info->par;
-
-	err = uvesafb_vbe_init(info);
-	if (err) {
-		printk(KERN_ERR "uvesafb: vbe_init() failed with %d\n", err);
-		goto out;
-	}
-
-	info->fbops = &uvesafb_ops;
-
-	i = uvesafb_vbe_init_mode(info);
-	if (i < 0) {
-		err = -EINVAL;
-		goto out;
-	} else {
-		mode = &par->vbe_modes[i];
-	}
-
-	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
-		err = -ENXIO;
-		goto out;
-	}
-
-	uvesafb_init_info(info, mode);
-
-	if (!request_region(0x3c0, 32, "uvesafb")) {
-		printk(KERN_ERR "uvesafb: request region 0x3c0-0x3e0 failed\n");
-		err = -EIO;
-		goto out_mode;
-	}
-
-	if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
-				"uvesafb")) {
-		printk(KERN_ERR "uvesafb: cannot reserve video memory at "
-				"0x%lx\n", info->fix.smem_start);
-		err = -EIO;
-		goto out_reg;
-	}
-
-	uvesafb_init_mtrr(info);
-	uvesafb_ioremap(info);
-
-	if (!info->screen_base) {
-		printk(KERN_ERR
-			"uvesafb: abort, cannot ioremap 0x%x bytes of video "
-			"memory at 0x%lx\n",
-			info->fix.smem_len, info->fix.smem_start);
-		err = -EIO;
-		goto out_mem;
-	}
-
-	platform_set_drvdata(dev, info);
-
-	if (register_framebuffer(info) < 0) {
-		printk(KERN_ERR
-			"uvesafb: failed to register framebuffer device\n");
-		err = -EINVAL;
-		goto out_unmap;
-	}
-
-	printk(KERN_INFO "uvesafb: framebuffer at 0x%lx, mapped to 0x%p, "
-			"using %dk, total %dk\n", info->fix.smem_start,
-			info->screen_base, info->fix.smem_len/1024,
-			par->vbe_ib.total_memory * 64);
-	fb_info(info, "%s frame buffer device\n", info->fix.id);
-
-	err = sysfs_create_group(&dev->dev.kobj, &uvesafb_dev_attgrp);
-	if (err != 0)
-		fb_warn(info, "failed to register attributes\n");
-
-	return 0;
-
-out_unmap:
-	iounmap(info->screen_base);
-out_mem:
-	release_mem_region(info->fix.smem_start, info->fix.smem_len);
-out_reg:
-	release_region(0x3c0, 32);
-out_mode:
-	if (!list_empty(&info->modelist))
-		fb_destroy_modelist(&info->modelist);
-	fb_destroy_modedb(info->monspecs.modedb);
-	fb_dealloc_cmap(&info->cmap);
-out:
-	kfree(par->vbe_modes);
-
-	framebuffer_release(info);
-	return err;
-}
-
-static int uvesafb_remove(struct platform_device *dev)
-{
-	struct fb_info *info = platform_get_drvdata(dev);
-
-	if (info) {
-		struct uvesafb_par *par = info->par;
-
-		sysfs_remove_group(&dev->dev.kobj, &uvesafb_dev_attgrp);
-		unregister_framebuffer(info);
-		release_region(0x3c0, 32);
-		iounmap(info->screen_base);
-		arch_phys_wc_del(par->mtrr_handle);
-		release_mem_region(info->fix.smem_start, info->fix.smem_len);
-		fb_destroy_modedb(info->monspecs.modedb);
-		fb_dealloc_cmap(&info->cmap);
-
-		kfree(par->vbe_modes);
-		kfree(par->vbe_state_orig);
-		kfree(par->vbe_state_saved);
-
-		framebuffer_release(info);
-	}
-	return 0;
-}
-
-static struct platform_driver uvesafb_driver = {
-	.probe  = uvesafb_probe,
-	.remove = uvesafb_remove,
-	.driver = {
-		.name = "uvesafb",
-	},
-};
-
-static struct platform_device *uvesafb_device;
-
-#ifndef MODULE
-static int uvesafb_setup(char *options)
-{
-	char *this_opt;
-
-	if (!options || !*options)
-		return 0;
-
-	while ((this_opt = strsep(&options, ",")) != NULL) {
-		if (!*this_opt) continue;
-
-		if (!strcmp(this_opt, "redraw"))
-			ypan = 0;
-		else if (!strcmp(this_opt, "ypan"))
-			ypan = 1;
-		else if (!strcmp(this_opt, "ywrap"))
-			ypan = 2;
-		else if (!strcmp(this_opt, "vgapal"))
-			pmi_setpal = 0;
-		else if (!strcmp(this_opt, "pmipal"))
-			pmi_setpal = 1;
-		else if (!strncmp(this_opt, "mtrr:", 5))
-			mtrr = simple_strtoul(this_opt+5, NULL, 0);
-		else if (!strcmp(this_opt, "nomtrr"))
-			mtrr = 0;
-		else if (!strcmp(this_opt, "nocrtc"))
-			nocrtc = 1;
-		else if (!strcmp(this_opt, "noedid"))
-			noedid = 1;
-		else if (!strcmp(this_opt, "noblank"))
-			blank = 0;
-		else if (!strncmp(this_opt, "vtotal:", 7))
-			vram_total = simple_strtoul(this_opt + 7, NULL, 0);
-		else if (!strncmp(this_opt, "vremap:", 7))
-			vram_remap = simple_strtoul(this_opt + 7, NULL, 0);
-		else if (!strncmp(this_opt, "maxhf:", 6))
-			maxhf = simple_strtoul(this_opt + 6, NULL, 0);
-		else if (!strncmp(this_opt, "maxvf:", 6))
-			maxvf = simple_strtoul(this_opt + 6, NULL, 0);
-		else if (!strncmp(this_opt, "maxclk:", 7))
-			maxclk = simple_strtoul(this_opt + 7, NULL, 0);
-		else if (!strncmp(this_opt, "vbemode:", 8))
-			vbemode = simple_strtoul(this_opt + 8, NULL, 0);
-		else if (this_opt[0] >= '0' && this_opt[0] <= '9') {
-			mode_option = this_opt;
-		} else {
-			printk(KERN_WARNING
-				"uvesafb: unrecognized option %s\n", this_opt);
-		}
-	}
-
-	if (mtrr != 3 && mtrr != 0)
-		pr_warn("uvesafb: mtrr should be set to 0 or 3; %d is unsupported", mtrr);
-
-	return 0;
-}
-#endif /* !MODULE */
-
-static ssize_t show_v86d(struct device_driver *dev, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%s\n", v86d_path);
-}
-
-static ssize_t store_v86d(struct device_driver *dev, const char *buf,
-		size_t count)
-{
-	strncpy(v86d_path, buf, PATH_MAX);
-	return count;
-}
-
-static DRIVER_ATTR(v86d, S_IRUGO | S_IWUSR, show_v86d, store_v86d);
-
-static int uvesafb_init(void)
-{
-	int err;
-
-#ifndef MODULE
-	char *option = NULL;
-
-	if (fb_get_options("uvesafb", &option))
-		return -ENODEV;
-	uvesafb_setup(option);
-#endif
-	err = cn_add_callback(&uvesafb_cn_id, "uvesafb", uvesafb_cn_callback);
-	if (err)
-		return err;
-
-	err = platform_driver_register(&uvesafb_driver);
-
-	if (!err) {
-		uvesafb_device = platform_device_alloc("uvesafb", 0);
-		if (uvesafb_device)
-			err = platform_device_add(uvesafb_device);
-		else
-			err = -ENOMEM;
-
-		if (err) {
-			if (uvesafb_device)
-				platform_device_put(uvesafb_device);
-			platform_driver_unregister(&uvesafb_driver);
-			cn_del_callback(&uvesafb_cn_id);
-			return err;
-		}
-
-		err = driver_create_file(&uvesafb_driver.driver,
-				&driver_attr_v86d);
-		if (err) {
-			printk(KERN_WARNING "uvesafb: failed to register "
-					"attributes\n");
-			err = 0;
-		}
-	}
-	return err;
-}
-
-module_init(uvesafb_init);
-
-static void uvesafb_exit(void)
-{
-	struct uvesafb_ktask *task;
-
-	if (v86d_started) {
-		task = uvesafb_prep();
-		if (task) {
-			task->t.flags = TF_EXIT;
-			uvesafb_exec(task);
-			uvesafb_free(task);
-		}
-	}
-
-	cn_del_callback(&uvesafb_cn_id);
-	driver_remove_file(&uvesafb_driver.driver, &driver_attr_v86d);
-	platform_device_unregister(uvesafb_device);
-	platform_driver_unregister(&uvesafb_driver);
-}
-
-module_exit(uvesafb_exit);
-
-static int param_set_scroll(const char *val, const struct kernel_param *kp)
-{
-	ypan = 0;
-
-	if (!strcmp(val, "redraw"))
-		ypan = 0;
-	else if (!strcmp(val, "ypan"))
-		ypan = 1;
-	else if (!strcmp(val, "ywrap"))
-		ypan = 2;
-	else
-		return -EINVAL;
-
-	return 0;
-}
-static struct kernel_param_ops param_ops_scroll = {
-	.set = param_set_scroll,
-};
-#define param_check_scroll(name, p) __param_check(name, p, void)
-
-module_param_named(scroll, ypan, scroll, 0);
-MODULE_PARM_DESC(scroll,
-	"Scrolling mode, set to 'redraw', 'ypan', or 'ywrap'");
-module_param_named(vgapal, pmi_setpal, invbool, 0);
-MODULE_PARM_DESC(vgapal, "Set palette using VGA registers");
-module_param_named(pmipal, pmi_setpal, bool, 0);
-MODULE_PARM_DESC(pmipal, "Set palette using PMI calls");
-module_param(mtrr, uint, 0);
-MODULE_PARM_DESC(mtrr,
-	"Memory Type Range Registers setting. Use 0 to disable.");
-module_param(blank, bool, 0);
-MODULE_PARM_DESC(blank, "Enable hardware blanking");
-module_param(nocrtc, bool, 0);
-MODULE_PARM_DESC(nocrtc, "Ignore CRTC timings when setting modes");
-module_param(noedid, bool, 0);
-MODULE_PARM_DESC(noedid,
-	"Ignore EDID-provided monitor limits when setting modes");
-module_param(vram_remap, uint, 0);
-MODULE_PARM_DESC(vram_remap, "Set amount of video memory to be used [MiB]");
-module_param(vram_total, uint, 0);
-MODULE_PARM_DESC(vram_total, "Set total amount of video memoery [MiB]");
-module_param(maxclk, ushort, 0);
-MODULE_PARM_DESC(maxclk, "Maximum pixelclock [MHz], overrides EDID data");
-module_param(maxhf, ushort, 0);
-MODULE_PARM_DESC(maxhf,
-	"Maximum horizontal frequency [kHz], overrides EDID data");
-module_param(maxvf, ushort, 0);
-MODULE_PARM_DESC(maxvf,
-	"Maximum vertical frequency [Hz], overrides EDID data");
-module_param(mode_option, charp, 0);
-MODULE_PARM_DESC(mode_option,
-	"Specify initial video mode as \"<xres>x<yres>[-<bpp>][@<refresh>]\"");
-module_param(vbemode, ushort, 0);
-MODULE_PARM_DESC(vbemode,
-	"VBE mode number to set, overrides the 'mode' option");
-module_param_string(v86d, v86d_path, PATH_MAX, 0660);
-MODULE_PARM_DESC(v86d, "Path to the v86d userspace helper.");
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Michal Januszewski <spock@gentoo.org>");
-MODULE_DESCRIPTION("Framebuffer driver for VBE2.0+ compliant graphics boards");
-
-- 
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