android_kernel_xiaomi_sm8350/arch/sh/boards/renesas/rts7751r2d/led.c
Jörn Engel 6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00

67 lines
1.3 KiB
C

/*
* linux/arch/sh/kernel/led_rts7751r2d.c
*
* Copyright (C) Atom Create Engineering Co., Ltd.
*
* May be copied or modified under the terms of GNU General Public
* License. See linux/COPYING for more information.
*
* This file contains Renesas Technology Sales RTS7751R2D specific LED code.
*/
#include <asm/io.h>
#include <asm/rts7751r2d/rts7751r2d.h>
extern unsigned int debug_counter;
#ifdef CONFIG_HEARTBEAT
#include <linux/sched.h>
/* Cycle the LED's in the clasic Knightriger/Sun pattern */
void heartbeat_rts7751r2d(void)
{
static unsigned int cnt = 0, period = 0;
volatile unsigned short *p = (volatile unsigned short *)PA_OUTPORT;
static unsigned bit = 0, up = 1;
cnt += 1;
if (cnt < period)
return;
cnt = 0;
/* Go through the points (roughly!):
* f(0)=10, f(1)=16, f(2)=20, f(5)=35, f(int)->110
*/
period = 110 - ((300 << FSHIFT)/((avenrun[0]/5) + (3<<FSHIFT)));
*p = 1 << bit;
if (up)
if (bit == 7) {
bit--;
up = 0;
} else
bit++;
else if (bit == 0)
up = 1;
else
bit--;
}
#endif /* CONFIG_HEARTBEAT */
void rts7751r2d_led(unsigned short value)
{
ctrl_outw(value, PA_OUTPORT);
}
void debug_led_disp(void)
{
unsigned short value;
value = (unsigned short)debug_counter++;
rts7751r2d_led(value);
if (value == 0xff)
debug_counter = 0;
}