1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
68 lines
1.3 KiB
C
68 lines
1.3 KiB
C
/*
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* linux/arch/sh/kernel/led_rts7751r2d.c
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*
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* Copyright (C) Atom Create Engineering Co., Ltd.
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*
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* May be copied or modified under the terms of GNU General Public
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* License. See linux/COPYING for more information.
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*
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* This file contains Renesas Technology Sales RTS7751R2D specific LED code.
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*/
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#include <linux/config.h>
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#include <asm/io.h>
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#include <asm/rts7751r2d/rts7751r2d.h>
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extern unsigned int debug_counter;
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#ifdef CONFIG_HEARTBEAT
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#include <linux/sched.h>
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/* Cycle the LED's in the clasic Knightriger/Sun pattern */
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void heartbeat_rts7751r2d(void)
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{
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static unsigned int cnt = 0, period = 0;
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volatile unsigned short *p = (volatile unsigned short *)PA_OUTPORT;
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static unsigned bit = 0, up = 1;
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cnt += 1;
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if (cnt < period)
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return;
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cnt = 0;
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/* Go through the points (roughly!):
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* f(0)=10, f(1)=16, f(2)=20, f(5)=35, f(int)->110
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*/
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period = 110 - ((300 << FSHIFT)/((avenrun[0]/5) + (3<<FSHIFT)));
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*p = 1 << bit;
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if (up)
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if (bit == 7) {
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bit--;
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up = 0;
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} else
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bit++;
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else if (bit == 0)
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up = 1;
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else
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bit--;
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}
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#endif /* CONFIG_HEARTBEAT */
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void rts7751r2d_led(unsigned short value)
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{
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ctrl_outw(value, PA_OUTPORT);
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}
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void debug_led_disp(void)
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{
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unsigned short value;
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value = (unsigned short)debug_counter++;
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rts7751r2d_led(value);
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if (value == 0xff)
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debug_counter = 0;
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}
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