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author | Yoshinori Sato <ysato@users.sourceforge.jp> | 2006-11-05 16:21:09 +0900 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2006-12-06 10:45:37 +0900 |
commit | f36af3fd377081d3ac2ff6b63a60f8db8b3bf531 (patch) | |
tree | 04704043666c5fdc0b8db91a640eaf694f61803e /arch/sh/boards/se/7206/led.c | |
parent | sh: Add SH-2A platform headers. (diff) | |
download | linux-dev-f36af3fd377081d3ac2ff6b63a60f8db8b3bf531.tar.xz linux-dev-f36af3fd377081d3ac2ff6b63a60f8db8b3bf531.zip |
sh: Add support for Solution Engine 7206 and 7619 boards.
This adds support for the Solution Engine 7206 and 7619.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boards/se/7206/led.c')
-rw-r--r-- | arch/sh/boards/se/7206/led.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/sh/boards/se/7206/led.c b/arch/sh/boards/se/7206/led.c new file mode 100644 index 000000000000..ef794601ab86 --- /dev/null +++ b/arch/sh/boards/se/7206/led.c @@ -0,0 +1,57 @@ +/* + * linux/arch/sh/kernel/led_se.c + * + * Copyright (C) 2000 Stuart Menefy <stuart.menefy@st.com> + * + * 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 <linux/config.h> +#include <asm/se7206.h> + +#ifdef CONFIG_HEARTBEAT + +#include <linux/sched.h> + +/* Cycle the LED's in the clasic Knightrider/Sun pattern */ +void heartbeat_se(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+8); + +} +#endif /* CONFIG_HEARTBEAT */ |