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1a29ef8e97
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19815 3c298f89-4303-0410-b956-a3cf2f4a3e73
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/*
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* arch/ubicom32/include/asm/vga.h
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* Ubicom32 low level VGA/frame buffer definitions.
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*
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* (C) Copyright 2009, Ubicom, Inc.
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* (c) 1998 Martin Mares <mj@ucw.cz>
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*
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* This file is part of the Ubicom32 Linux Kernel Port.
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*
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* The Ubicom32 Linux Kernel Port is free software: you can redistribute
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* it and/or modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 2 of the
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* License, or (at your option) any later version.
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*
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* The Ubicom32 Linux Kernel Port is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Ubicom32 Linux Kernel Port. If not,
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* see <http://www.gnu.org/licenses/>.
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*
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* Ubicom32 implementation derived from (with many thanks):
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* arch/m68knommu
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* arch/blackfin
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* arch/parisc
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*/
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#ifndef _ASM_UBICOM32_VGA_H
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#define _ASM_UBICOM32_VGA_H
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#include <asm/byteorder.h>
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/*
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* On the PC, we can just recalculate addresses and then
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* access the videoram directly without any black magic.
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*/
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#define VGA_MAP_MEM(x, s) (0xb0000000L + (unsigned long)(x))
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#define vga_readb(x) (*(x))
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#define vga_writeb(x, y) (*(y) = (x))
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#define VT_BUF_HAVE_RW
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/*
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* These are only needed for supporting VGA or MDA text mode, which use little
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* endian byte ordering.
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* In other cases, we can optimize by using native byte ordering and
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* <linux/vt_buffer.h> has already done the right job for us.
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*/
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#undef scr_writew
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#undef scr_readw
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static inline void scr_writew(u16 val, volatile u16 *addr)
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{
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*addr = cpu_to_le16(val);
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}
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static inline u16 scr_readw(volatile const u16 *addr)
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{
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return le16_to_cpu(*addr);
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}
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#define scr_memcpyw(d, s, c) memcpy(d, s, c)
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#define scr_memmovew(d, s, c) memmove(d, s, c)
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#define VT_BUF_HAVE_MEMCPYW
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#define VT_BUF_HAVE_MEMMOVEW
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#endif /* _ASM_UBICOM32_VGA_H */
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