mirror of
https://github.com/u-boot/u-boot.git
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137 lines
2.7 KiB
C
137 lines
2.7 KiB
C
/*
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* (C) Copyright 2005
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* BuS Elektronik GmbH & Co.KG <esw@bus-elektonik.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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#include <common.h>
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#include <asm/m5282.h>
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#include "VCxK.h"
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vu_char *vcxk_bws = (vu_char *)(CFG_CS3_BASE);
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#define VCXK_BWS vcxk_bws
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static ulong vcxk_driver;
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ulong search_vcxk_driver(void);
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void vcxk_cls(void);
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void vcxk_setbrightness(short brightness);
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int vcxk_request(void);
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int vcxk_acknowledge_wait(void);
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void vcxk_clear(void);
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int init_vcxk(void)
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{
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VIDEO_Invert_CFG &= ~VIDEO_Invert_IO;
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VIDEO_INVERT_PORT |= VIDEO_INVERT_PIN;
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VIDEO_INVERT_DDR |= VIDEO_INVERT_PIN;
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VIDEO_REQUEST_PORT |= VIDEO_REQUEST_PIN;
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VIDEO_REQUEST_DDR |= VIDEO_REQUEST_PIN;
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VIDEO_ACKNOWLEDGE_DDR &= ~VIDEO_ACKNOWLEDGE_PIN;
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vcxk_driver = search_vcxk_driver();
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if (vcxk_driver)
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{
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/* use flash resist driver */
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}
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else
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{
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vcxk_cls();
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vcxk_cls();
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vcxk_setbrightness(1000);
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}
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VIDEO_ENABLE_DDR |= VIDEO_ENABLE_PIN;
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VIDEO_ENABLE_PORT |= VIDEO_ENABLE_PIN;
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VIDEO_ENABLE_PORT &= ~VIDEO_ENABLE_PIN;
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return 1;
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}
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void vcxk_loadimage(ulong source)
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{
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int cnt;
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vcxk_acknowledge_wait();
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for (cnt=0; cnt<16384; cnt++)
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{
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VCXK_BWS[cnt*2] = (*(vu_char*) source);
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source++;
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}
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vcxk_request();
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}
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void vcxk_cls(void)
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{
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vcxk_acknowledge_wait();
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vcxk_clear();
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vcxk_request();
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}
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void vcxk_clear(void)
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{
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int cnt;
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for (cnt=0; cnt<16384; cnt++)
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{
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VCXK_BWS[cnt*2] = 0x00;
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}
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}
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void vcxk_setbrightness(short brightness)
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{
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VCXK_BWS[0x8000]=(brightness >> 4) +2;
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VCXK_BWS[0xC000]= (brightness + 23) >> 8;
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VCXK_BWS[0xC001]= (brightness + 23) & 0xFF;
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}
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int vcxk_request(void)
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{
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if (vcxk_driver)
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{
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/* use flash resist driver */
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}
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else
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{
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VIDEO_REQUEST_PORT &= ~VIDEO_REQUEST_PIN;
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VIDEO_REQUEST_PORT |= VIDEO_REQUEST_PIN;
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}
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return 1;
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}
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int vcxk_acknowledge_wait(void)
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{
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if (vcxk_driver)
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{
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/* use flash resist driver */
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}
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else
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{
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while (!(VIDEO_ACKNOWLEDGE_PORT & VIDEO_ACKNOWLEDGE_PIN));
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}
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return 1;
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}
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ulong search_vcxk_driver(void)
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{
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return 0;
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}
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/* eof */
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