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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-01 21:53:43 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-01 21:53:43 +0400 |
commit | 00e9028a95fb8a4d79f2fb695a853f33ea7d3b57 (patch) | |
tree | 2dea2ae498a6ce57de8890e87185aca5e9f3ad2d /arch/sh/boards/mach-microdev/led.c | |
parent | 57b1494d2ba544c62673234da6115c21fac27ffc (diff) | |
parent | 7cb93181629c613ee2b8f4ffe3446f8003074842 (diff) | |
download | linux-00e9028a95fb8a4d79f2fb695a853f33ea7d3b57.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (28 commits)
mm/hugetlb.c must #include <asm/io.h>
video: Fix up hp6xx driver build regressions.
sh: defconfig updates.
sh: Kill off stray mach-rsk7203 reference.
serial: sh-sci: Fix up SH7760/SH7780/SH7785 early printk regression.
sh: Move out individual boards without mach groups.
sh: Make sure AT_SYSINFO_EHDR is exposed to userspace in asm/auxvec.h.
sh: Allow SH-3 and SH-5 to use common headers.
sh: Provide common CPU headers, prune the SH-2 and SH-2A directories.
sh/maple: clean maple bus code
sh: More header path fixups for mach dir refactoring.
sh: Move out the solution engine headers to arch/sh/include/mach-se/
sh: I2C fix for AP325RXA and Migo-R
sh: Shuffle the board directories in to mach groups.
sh: dma-sh: Fix up dreamcast dma.h mach path.
sh: Switch KBUILD_DEFCONFIG to shx3_defconfig.
sh: Add ARCH_DEFCONFIG entries for sh and sh64.
sh: Fix compile error of Solution Engine
sh: Proper __put_user_asm() size mismatch fix.
sh: Stub in a dummy ENTRY_OFFSET for uImage offset calculation.
...
Diffstat (limited to 'arch/sh/boards/mach-microdev/led.c')
-rw-r--r-- | arch/sh/boards/mach-microdev/led.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-microdev/led.c b/arch/sh/boards/mach-microdev/led.c new file mode 100644 index 000000000000..36e54b47a752 --- /dev/null +++ b/arch/sh/boards/mach-microdev/led.c @@ -0,0 +1,101 @@ +/* + * linux/arch/sh/boards/superh/microdev/led.c + * + * Copyright (C) 2002 Stuart Menefy <stuart.menefy@st.com> + * Copyright (C) 2003 Richard Curnow (Richard.Curnow@superh.com) + * + * May be copied or modified under the terms of the GNU General Public + * License. See linux/COPYING for more information. + * + */ + +#include <asm/io.h> + +#define LED_REGISTER 0xa6104d20 + +static void mach_led_d9(int value) +{ + unsigned long reg; + reg = ctrl_inl(LED_REGISTER); + reg &= ~1; + reg |= (value & 1); + ctrl_outl(reg, LED_REGISTER); + return; +} + +static void mach_led_d10(int value) +{ + unsigned long reg; + reg = ctrl_inl(LED_REGISTER); + reg &= ~2; + reg |= ((value & 1) << 1); + ctrl_outl(reg, LED_REGISTER); + return; +} + + +#ifdef CONFIG_HEARTBEAT +#include <linux/sched.h> + +static unsigned char banner_table[] = { + 0x11, 0x01, 0x11, 0x01, 0x11, 0x03, + 0x11, 0x01, 0x11, 0x01, 0x13, 0x03, + 0x11, 0x01, 0x13, 0x01, 0x13, 0x01, 0x11, 0x03, + 0x11, 0x03, + 0x11, 0x01, 0x13, 0x01, 0x11, 0x03, + 0x11, 0x01, 0x11, 0x01, 0x11, 0x01, 0x11, 0x07, + 0x13, 0x01, 0x13, 0x03, + 0x11, 0x01, 0x11, 0x03, + 0x13, 0x01, 0x11, 0x01, 0x13, 0x01, 0x11, 0x03, + 0x11, 0x01, 0x13, 0x01, 0x11, 0x03, + 0x13, 0x01, 0x13, 0x01, 0x13, 0x03, + 0x13, 0x01, 0x11, 0x01, 0x11, 0x03, + 0x11, 0x03, + 0x11, 0x01, 0x11, 0x01, 0x11, 0x01, 0x13, 0x07, + 0xff +}; + +static void banner(void) +{ + static int pos = 0; + static int count = 0; + + if (count) { + count--; + } else { + int val = banner_table[pos]; + if (val == 0xff) { + pos = 0; + val = banner_table[pos]; + } + pos++; + mach_led_d10((val >> 4) & 1); + count = 10 * (val & 0xf); + } +} + +/* From heartbeat_harp in the stboards directory */ +/* acts like an actual heart beat -- ie thump-thump-pause... */ +void microdev_heartbeat(void) +{ + static unsigned cnt = 0, period = 0, dist = 0; + + if (cnt == 0 || cnt == dist) + mach_led_d9(1); + else if (cnt == 7 || cnt == dist+7) + mach_led_d9(0); + + if (++cnt > period) { + cnt = 0; + /* The hyperbolic function below modifies the heartbeat period + * length in dependency of the current (5min) load. It goes + * through the points f(0)=126, f(1)=86, f(5)=51, + * f(inf)->30. */ + period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30; + dist = period / 4; + } + + banner(); +} + +#endif |