From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 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! --- arch/sh/boards/se/73180/led.c | 67 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 arch/sh/boards/se/73180/led.c (limited to 'arch/sh/boards/se/73180/led.c') diff --git a/arch/sh/boards/se/73180/led.c b/arch/sh/boards/se/73180/led.c new file mode 100644 index 00000000000..1e8f1cf3e10 --- /dev/null +++ b/arch/sh/boards/se/73180/led.c @@ -0,0 +1,67 @@ +/* + * arch/sh/boards/se/73180/led.c + * + * Derived from arch/sh/boards/se/770x/led.c + * + * Copyright (C) 2000 Stuart Menefy + * + * May be copied or modified under the terms of the GNU General Public + * License. See linux/COPYING for more information. + * + * This file contains Solution Engine specific LED code. + */ + +#include +#include +#include + +static void +mach_led(int position, int value) +{ + volatile unsigned short *p = (volatile unsigned short *) PA_LED; + + if (value) { + *p |= (1 << LED_SHIFT); + } else { + *p &= ~(1 << LED_SHIFT); + } +} + +/* Cycle the LED's in the clasic Knightrider/Sun pattern */ +void +heartbeat_73180se(void) +{ + static unsigned int cnt = 0, period = 0; + volatile unsigned short *p = (volatile unsigned short *) PA_LED; + 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(inf)->110 + */ + period = 110 - ((300 << FSHIFT) / ((avenrun[0] / 5) + (3 << FSHIFT))); + + if (up) { + if (bit == 7) { + bit--; + up = 0; + } else { + bit++; + } + } else { + if (bit == 0) { + bit++; + up = 1; + } else { + bit--; + } + } + *p = 1 << (bit + LED_SHIFT); + +} -- cgit v1.2.3-70-g09d2