source: SVN/rincon/u-boot/board/BuS/EB+MCF-EV123/VCxK.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.7 KB
Line 
1/*
2 * (C) Copyright 2005
3 * BuS Elektronik GmbH & Co.KG <esw@bus-elektonik.de>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include <asm/m5282.h>
26#include "VCxK.h"
27
28vu_char *vcxk_bws = (vu_char *)(CFG_CS3_BASE);
29#define VCXK_BWS vcxk_bws
30
31static ulong vcxk_driver;
32
33
34ulong search_vcxk_driver(void);
35void vcxk_cls(void);
36void vcxk_setbrightness(short brightness);
37int vcxk_request(void);
38int vcxk_acknowledge_wait(void);
39void vcxk_clear(void);
40
41int init_vcxk(void)
42{
43        VIDEO_Invert_CFG &= ~VIDEO_Invert_IO;
44        VIDEO_INVERT_PORT |= VIDEO_INVERT_PIN;
45        VIDEO_INVERT_DDR  |= VIDEO_INVERT_PIN;
46
47        VIDEO_REQUEST_PORT |= VIDEO_REQUEST_PIN;
48        VIDEO_REQUEST_DDR |= VIDEO_REQUEST_PIN;
49
50        VIDEO_ACKNOWLEDGE_DDR &= ~VIDEO_ACKNOWLEDGE_PIN;
51
52        vcxk_driver = search_vcxk_driver();
53        if (vcxk_driver)
54        {
55                /* use flash resist driver */
56        }
57        else
58        {
59                vcxk_cls();
60                vcxk_cls();
61                vcxk_setbrightness(1000);
62        }
63        VIDEO_ENABLE_DDR |= VIDEO_ENABLE_PIN;
64        VIDEO_ENABLE_PORT |= VIDEO_ENABLE_PIN;
65        VIDEO_ENABLE_PORT &= ~VIDEO_ENABLE_PIN;
66        return 1;
67}
68
69void    vcxk_loadimage(ulong source)
70{
71        int cnt;
72        vcxk_acknowledge_wait();
73        for (cnt=0; cnt<16384; cnt++)
74        {
75                VCXK_BWS[cnt*2] = (*(vu_char*) source);
76                source++;
77        }
78        vcxk_request();
79}
80
81void vcxk_cls(void)
82{
83        vcxk_acknowledge_wait();
84        vcxk_clear();
85        vcxk_request();
86}
87
88void vcxk_clear(void)
89{
90        int cnt;
91        for (cnt=0; cnt<16384; cnt++)
92        {
93                VCXK_BWS[cnt*2] = 0x00;
94        }
95}
96
97void vcxk_setbrightness(short brightness)
98{
99        VCXK_BWS[0x8000]=(brightness >> 4) +2;
100        VCXK_BWS[0xC000]= (brightness + 23) >> 8;
101        VCXK_BWS[0xC001]= (brightness + 23) & 0xFF;
102}
103
104int vcxk_request(void)
105{
106        if (vcxk_driver)
107        {
108                /* use flash resist driver */
109        }
110        else
111        {
112                VIDEO_REQUEST_PORT &= ~VIDEO_REQUEST_PIN;
113                VIDEO_REQUEST_PORT |= VIDEO_REQUEST_PIN;
114        }
115        return 1;
116}
117
118int vcxk_acknowledge_wait(void)
119{
120        if (vcxk_driver)
121        {
122                /* use flash resist driver */
123        }
124        else
125        {
126                while (!(VIDEO_ACKNOWLEDGE_PORT & VIDEO_ACKNOWLEDGE_PIN));
127        }
128        return 1;
129}
130
131ulong search_vcxk_driver(void)
132{
133        return 0;
134}
135
136/* eof */
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