da2014a2b0
This flattens out the board directories in to individual mach groups, we will use this for getting rid of unneeded directories, simplifying the build system, and becoming more coherent with the refactored arch/sh/include topology. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/*
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* linux/arch/sh/boards/superh/microdev/led.c
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*
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* Copyright (C) 2002 Stuart Menefy <stuart.menefy@st.com>
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* Copyright (C) 2003 Richard Curnow (Richard.Curnow@superh.com)
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*
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* May be copied or modified under the terms of the GNU General Public
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* License. See linux/COPYING for more information.
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*
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*/
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#include <asm/io.h>
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#define LED_REGISTER 0xa6104d20
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static void mach_led_d9(int value)
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{
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unsigned long reg;
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reg = ctrl_inl(LED_REGISTER);
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reg &= ~1;
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reg |= (value & 1);
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ctrl_outl(reg, LED_REGISTER);
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return;
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}
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static void mach_led_d10(int value)
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{
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unsigned long reg;
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reg = ctrl_inl(LED_REGISTER);
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reg &= ~2;
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reg |= ((value & 1) << 1);
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ctrl_outl(reg, LED_REGISTER);
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return;
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}
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#ifdef CONFIG_HEARTBEAT
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#include <linux/sched.h>
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static unsigned char banner_table[] = {
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0x11, 0x01, 0x11, 0x01, 0x11, 0x03,
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0x11, 0x01, 0x11, 0x01, 0x13, 0x03,
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0x11, 0x01, 0x13, 0x01, 0x13, 0x01, 0x11, 0x03,
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0x11, 0x03,
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0x11, 0x01, 0x13, 0x01, 0x11, 0x03,
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0x11, 0x01, 0x11, 0x01, 0x11, 0x01, 0x11, 0x07,
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0x13, 0x01, 0x13, 0x03,
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0x11, 0x01, 0x11, 0x03,
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0x13, 0x01, 0x11, 0x01, 0x13, 0x01, 0x11, 0x03,
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0x11, 0x01, 0x13, 0x01, 0x11, 0x03,
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0x13, 0x01, 0x13, 0x01, 0x13, 0x03,
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0x13, 0x01, 0x11, 0x01, 0x11, 0x03,
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0x11, 0x03,
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0x11, 0x01, 0x11, 0x01, 0x11, 0x01, 0x13, 0x07,
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0xff
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};
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static void banner(void)
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{
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static int pos = 0;
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static int count = 0;
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if (count) {
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count--;
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} else {
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int val = banner_table[pos];
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if (val == 0xff) {
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pos = 0;
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val = banner_table[pos];
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}
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pos++;
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mach_led_d10((val >> 4) & 1);
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count = 10 * (val & 0xf);
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}
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}
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/* From heartbeat_harp in the stboards directory */
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/* acts like an actual heart beat -- ie thump-thump-pause... */
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void microdev_heartbeat(void)
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{
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static unsigned cnt = 0, period = 0, dist = 0;
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if (cnt == 0 || cnt == dist)
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mach_led_d9(1);
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else if (cnt == 7 || cnt == dist+7)
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mach_led_d9(0);
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if (++cnt > period) {
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cnt = 0;
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/* The hyperbolic function below modifies the heartbeat period
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* length in dependency of the current (5min) load. It goes
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* through the points f(0)=126, f(1)=86, f(5)=51,
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* f(inf)->30. */
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period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;
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dist = period / 4;
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}
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banner();
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}
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#endif
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