mirror of
https://github.com/AsahiLinux/u-boot
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150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/*
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* (C) Copyright 2002
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* Stäubli Faverges - <www.staubli.com>
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* Pierre AUBERT p.aubert@staubli.com
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*
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* (C) Copyright 2005
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* Martin Krause TQ-Systems GmbH martin.krause@tqs.de
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Basic video support for SMI SM501 "Voyager" graphic controller
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*/
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#include <common.h>
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#ifdef CONFIG_VIDEO_SM501
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#include <video_fb.h>
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#include <sm501.h>
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#define read8(ptrReg) \
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*(volatile unsigned char *)(sm501.isaBase + ptrReg)
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#define write8(ptrReg,value) \
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*(volatile unsigned char *)(sm501.isaBase + ptrReg) = value
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#define read16(ptrReg) \
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(*(volatile unsigned short *)(sm501.isaBase + ptrReg))
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#define write16(ptrReg,value) \
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(*(volatile unsigned short *)(sm501.isaBase + ptrReg) = value)
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#define read32(ptrReg) \
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(*(volatile unsigned int *)(sm501.isaBase + ptrReg))
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#define write32(ptrReg, value) \
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(*(volatile unsigned int *)(sm501.isaBase + ptrReg) = value)
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GraphicDevice sm501;
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/*-----------------------------------------------------------------------------
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* SmiSetRegs --
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*-----------------------------------------------------------------------------
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*/
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static void SmiSetRegs (void)
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{
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/*
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* The content of the chipset register depends on the board (clocks,
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* ...)
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*/
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const SMI_REGS *preg = board_get_regs ();
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while (preg->Index) {
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write32 (preg->Index, preg->Value);
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/*
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* Insert a delay between
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*/
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udelay (1000);
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preg ++;
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}
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}
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/*-----------------------------------------------------------------------------
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* video_hw_init --
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*-----------------------------------------------------------------------------
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*/
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void *video_hw_init (void)
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{
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unsigned int *vm, i;
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memset (&sm501, 0, sizeof (GraphicDevice));
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/*
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* Initialization of the access to the graphic chipset Retreive base
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* address of the chipset (see board/RPXClassic/eccx.c)
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*/
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if ((sm501.isaBase = board_video_init ()) == 0) {
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return (NULL);
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}
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if ((sm501.frameAdrs = board_video_get_fb ()) == 0) {
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return (NULL);
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}
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sm501.winSizeX = board_get_width ();
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sm501.winSizeY = board_get_height ();
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#if defined(CONFIG_VIDEO_SM501_8BPP)
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sm501.gdfIndex = GDF__8BIT_INDEX;
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sm501.gdfBytesPP = 1;
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#elif defined(CONFIG_VIDEO_SM501_16BPP)
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sm501.gdfIndex = GDF_16BIT_565RGB;
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sm501.gdfBytesPP = 2;
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#elif defined(CONFIG_VIDEO_SM501_32BPP)
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sm501.gdfIndex = GDF_32BIT_X888RGB;
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sm501.gdfBytesPP = 4;
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#else
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#error Unsupported SM501 BPP
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#endif
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sm501.memSize = sm501.winSizeX * sm501.winSizeY * sm501.gdfBytesPP;
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/* Load Smi registers */
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SmiSetRegs ();
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/* (see board/RPXClassic/RPXClassic.c) */
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board_validate_screen (sm501.isaBase);
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/* Clear video memory */
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i = sm501.memSize/4;
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vm = (unsigned int *)sm501.frameAdrs;
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while(i--)
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*vm++ = 0;
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return (&sm501);
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}
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/*-----------------------------------------------------------------------------
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* video_set_lut --
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*-----------------------------------------------------------------------------
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*/
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void video_set_lut (
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unsigned int index, /* color number */
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unsigned char r, /* red */
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unsigned char g, /* green */
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unsigned char b /* blue */
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)
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{
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}
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#endif /* CONFIG_VIDEO_SM501 */
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