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authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-01 10:53:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-01 10:53:43 -0700
commit00e9028a95fb8a4d79f2fb695a853f33ea7d3b57 (patch)
tree2dea2ae498a6ce57de8890e87185aca5e9f3ad2d /arch/sh/boards/mach-microdev/led.c
parent57b1494d2ba544c62673234da6115c21fac27ffc (diff)
parent7cb93181629c613ee2b8f4ffe3446f8003074842 (diff)
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.c101
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 00000000000..36e54b47a75
--- /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