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git.ipfire.org Git - people/ms/u-boot.git/blob - board/BuS/EB+MCF-EV123/VCxK.c
3 * BuS Elektronik GmbH & Co.KG <esw@bus-elektonik.de>
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 #include <asm/m5282.h>
28 vu_char
*vcxk_bws
= (vu_char
*)(CONFIG_SYS_CS3_BASE
);
29 #define VCXK_BWS vcxk_bws
31 static ulong vcxk_driver
;
34 ulong
search_vcxk_driver(void);
36 void vcxk_setbrightness(short brightness
);
37 int vcxk_request(void);
38 int vcxk_acknowledge_wait(void);
39 void vcxk_clear(void);
43 VIDEO_Invert_CFG
&= ~VIDEO_Invert_IO
;
44 VIDEO_INVERT_PORT
|= VIDEO_INVERT_PIN
;
45 VIDEO_INVERT_DDR
|= VIDEO_INVERT_PIN
;
47 VIDEO_REQUEST_PORT
|= VIDEO_REQUEST_PIN
;
48 VIDEO_REQUEST_DDR
|= VIDEO_REQUEST_PIN
;
50 VIDEO_ACKNOWLEDGE_DDR
&= ~VIDEO_ACKNOWLEDGE_PIN
;
52 vcxk_driver
= search_vcxk_driver();
55 /* use flash resist driver */
61 vcxk_setbrightness(1000);
63 VIDEO_ENABLE_DDR
|= VIDEO_ENABLE_PIN
;
64 VIDEO_ENABLE_PORT
|= VIDEO_ENABLE_PIN
;
65 VIDEO_ENABLE_PORT
&= ~VIDEO_ENABLE_PIN
;
69 void vcxk_loadimage(ulong source
)
72 vcxk_acknowledge_wait();
73 for (cnt
=0; cnt
<16384; cnt
++)
75 VCXK_BWS
[cnt
*2] = (*(vu_char
*) source
);
83 vcxk_acknowledge_wait();
91 for (cnt
=0; cnt
<16384; cnt
++)
93 VCXK_BWS
[cnt
*2] = 0x00;
97 void vcxk_setbrightness(short brightness
)
99 VCXK_BWS
[0x8000]=(brightness
>> 4) +2;
100 VCXK_BWS
[0xC000]= (brightness
+ 23) >> 8;
101 VCXK_BWS
[0xC001]= (brightness
+ 23) & 0xFF;
104 int vcxk_request(void)
108 /* use flash resist driver */
112 VIDEO_REQUEST_PORT
&= ~VIDEO_REQUEST_PIN
;
113 VIDEO_REQUEST_PORT
|= VIDEO_REQUEST_PIN
;
118 int vcxk_acknowledge_wait(void)
122 /* use flash resist driver */
126 while (!(VIDEO_ACKNOWLEDGE_PORT
& VIDEO_ACKNOWLEDGE_PIN
));
131 ulong
search_vcxk_driver(void)