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