mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 06:30:39 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
45 lines
911 B
C
45 lines
911 B
C
/*
|
|
* Copyright 2010 Sergey Poselenov, Emcraft Systems, <sposelenov@emcraft.com>
|
|
* Copyright 2010 Ilya Yanok, Emcraft Systems, <yanok@emcraft.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <led-display.h>
|
|
#include <asm/io.h>
|
|
|
|
#ifdef CONFIG_CMD_DISPLAY
|
|
#define CWORD_CLEAR 0x80
|
|
#define CLEAR_DELAY (110 * 2)
|
|
#define DISPLAY_SIZE 8
|
|
|
|
static int pos; /* Current display position */
|
|
|
|
/* Handle different display commands */
|
|
void display_set(int cmd)
|
|
{
|
|
if (cmd & DISPLAY_CLEAR) {
|
|
out_8((unsigned char *)CONFIG_SYS_DISP_CWORD, CWORD_CLEAR);
|
|
udelay(1000 * CLEAR_DELAY);
|
|
}
|
|
|
|
if (cmd & DISPLAY_HOME) {
|
|
pos = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Display a character at the current display position.
|
|
* Characters beyond the display size are ignored.
|
|
*/
|
|
int display_putc(char c)
|
|
{
|
|
if (pos >= DISPLAY_SIZE)
|
|
return -1;
|
|
|
|
out_8((unsigned char *)CONFIG_SYS_DISP_CHR_RAM + pos++, c);
|
|
|
|
return c;
|
|
}
|
|
#endif
|