| 1 | |
| 2 | * linux/drivers/video/console/fbcon_rotate.c -- Software Rotation
|
| 3 | *
|
| 4 | * Copyright (C) 2005 Antonino Daplas <adaplas @pol.net>
|
| 5 | *
|
| 6 | * This file is subject to the terms and conditions of the GNU General Public
|
| 7 | * License. See the file COPYING in the main directory of this archive for
|
| 8 | * more details.
|
| 9 |
|
| 10 |
|
| 11 | #include <linux/errno.h>
|
| 12 | #include <linux/fb.h>
|
| 13 | #include <linux/font.h>
|
| 14 |
|
| 15 | #include "fbcon.h"
|
| 16 | #include "fbcon_rotate.h"
|
| 17 |
|
| 18 | int fbcon_rotate_font(struct fb_info *info, struct vc_data *vc)
|
| 19 | {
|
| 20 | struct fbcon_par *par = info->fbcon_par;
|
| 21 | unsigned char *buf;
|
| 22 | int ret;
|
| 23 |
|
| 24 | if (par->p->fontdata == par->rotated.fontdata && par->rotate == par->rotated.buf_rotate)
|
| 25 | return 0;
|
| 26 |
|
| 27 | par->rotated.fontdata = par->p->fontdata;
|
| 28 | par->rotated.buf_rotate = par->rotate;
|
| 29 |
|
| 30 | if (info->fbops->fb_sync)
|
| 31 | info->fbops->fb_sync(info);
|
| 32 |
|
| 33 | buf = font_data_rotate(par->rotated.fontdata, vc->vc_font.width,
|
| 34 | vc->vc_font.height, vc->vc_font.charcount,
|
| 35 | par->rotated.buf_rotate, par->rotated.buf,
|
| 36 | &par->rotated.bufsize);
|
| 37 | if (IS_ERR(buf)) {
|
| 38 | ret = PTR_ERR(buf);
|
| 39 | goto err_kfree;
|
| 40 | }
|
| 41 |
|
| 42 | par->rotated.buf = buf;
|
| 43 |
|
| 44 | return 0;
|
| 45 |
|
| 46 | err_kfree:
|
| 47 | kfree(par->rotated.buf);
|
| 48 | par->rotated.buf = NULL;
|
| 49 | par->rotated.bufsize = 0;
|
| 50 |
|
| 51 | return ret;
|
| 52 | }
|