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/*
* linux/drivers/video/console/fbcon_rotate.c -- Software Rotation
*
* Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/font.h>
#include "fbcon.h"
#include "fbcon_rotate.h"
int fbcon_rotate_font(struct fb_info *info, struct vc_data *vc)
{
struct fbcon_par *par = info->fbcon_par;
unsigned char *buf;
int ret;
if (par->p->fontdata == par->rotated.fontdata &&
par->rotate == par->rotated.buf_rotate &&
vc->vc_font.width == par->rotated.buf_width &&
vc->vc_font.height == par->rotated.buf_height &&
vc->vc_font.charcount == par->rotated.buf_charcount &&
par->rotated.buf)
return 0;
par->rotated.fontdata = par->p->fontdata;
par->rotated.buf_rotate = par->rotate;
par->rotated.buf_width = vc->vc_font.width;
par->rotated.buf_height = vc->vc_font.height;
par->rotated.buf_charcount = vc->vc_font.charcount;
if (info->fbops->fb_sync)
info->fbops->fb_sync(info);
buf = font_data_rotate(par->rotated.fontdata, vc->vc_font.width,
vc->vc_font.height, vc->vc_font.charcount,
par->rotated.buf_rotate, par->rotated.buf,
&par->rotated.bufsize);
if (IS_ERR(buf)) {
ret = PTR_ERR(buf);
goto err_kfree;
}
par->rotated.buf = buf;
return 0;
err_kfree:
kfree(par->rotated.buf);
par->rotated.buf = NULL; /* clear here to avoid output */
par->rotated.bufsize = 0;
return ret;
}
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