53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
|
/* ASB2303 peripheral 7-segment LEDs x1 support
|
||
|
|
*
|
||
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
||
|
|
* Written by David Howells (dhowells@redhat.com)
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public Licence
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the Licence, or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/param.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/processor.h>
|
||
|
|
#include <asm/intctl-regs.h>
|
||
|
|
#include <asm/rtc-regs.h>
|
||
|
|
#include <asm/unit/leds.h>
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
static const u8 asb2303_led_hex_tbl[16] = {
|
||
|
|
0x80, 0xf2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xf0,
|
||
|
|
0x00, 0x20, 0x10, 0x06, 0x8c, 0x42, 0x0c, 0x1c
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static const u8 asb2303_led_chase_tbl[6] = {
|
||
|
|
~0x02, /* top - segA */
|
||
|
|
~0x04, /* right top - segB */
|
||
|
|
~0x08, /* right bottom - segC */
|
||
|
|
~0x10, /* bottom - segD */
|
||
|
|
~0x20, /* left bottom - segE */
|
||
|
|
~0x40, /* left top - segF */
|
||
|
|
};
|
||
|
|
|
||
|
|
static unsigned asb2303_led_chase;
|
||
|
|
|
||
|
|
void peripheral_leds_display_exception(enum exception_code code)
|
||
|
|
{
|
||
|
|
ASB2303_GPIO0DEF = 0x5555; /* configure as an output port */
|
||
|
|
ASB2303_7SEGLEDS = 0x6d; /* triple horizontal bar */
|
||
|
|
}
|
||
|
|
|
||
|
|
void peripheral_leds_led_chase(void)
|
||
|
|
{
|
||
|
|
ASB2303_GPIO0DEF = 0x5555; /* configure as an output port */
|
||
|
|
ASB2303_7SEGLEDS = asb2303_led_chase_tbl[asb2303_led_chase];
|
||
|
|
asb2303_led_chase++;
|
||
|
|
if (asb2303_led_chase >= 6)
|
||
|
|
asb2303_led_chase = 0;
|
||
|
|
}
|