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https://github.com/linux-msm/laptops-kernel.git
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Thomas ZimmermannandHelge Deller
98e5b6d069
Move all temporary state of the font-rotation code into the struct rotated in struct fbcon_par. Protect it with the Kconfig symbol CONFIG_FRAMEBUFFER_CONSOLE_ROTATION. Avoids mixing it up with fbcon's regular state. v2: - fix typos Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de>
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/*
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* linux/drivers/video/console/fbcon_rotate.c -- Software Rotation
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*
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* Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#include <linux/errno.h>
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#include <linux/fb.h>
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#include <linux/font.h>
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#include "fbcon.h"
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#include "fbcon_rotate.h"
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int fbcon_rotate_font(struct fb_info *info, struct vc_data *vc)
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{
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struct fbcon_par *par = info->fbcon_par;
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unsigned char *buf;
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int ret;
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if (par->p->fontdata == par->rotated.fontdata && par->rotate == par->rotated.buf_rotate)
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return 0;
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par->rotated.fontdata = par->p->fontdata;
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par->rotated.buf_rotate = par->rotate;
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if (info->fbops->fb_sync)
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info->fbops->fb_sync(info);
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buf = font_data_rotate(par->rotated.fontdata, vc->vc_font.width,
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vc->vc_font.height, vc->vc_font.charcount,
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par->rotated.buf_rotate, par->rotated.buf,
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&par->rotated.bufsize);
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if (IS_ERR(buf)) {
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ret = PTR_ERR(buf);
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goto err_kfree;
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}
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par->rotated.buf = buf;
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return 0;
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err_kfree:
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kfree(par->rotated.buf);
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par->rotated.buf = NULL; /* clear here to avoid output */
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par->rotated.bufsize = 0;
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return ret;
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}
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