---

yaml --- r: 54680 b: refs/heads/master c: f038f9a h: refs/heads/master v: v3
git-mirror · May 8, 2007 · 89bc2d4 · 89bc2d4
1 parent d372989
commit 89bc2d4
Show file tree

Hide file tree

Showing 4 changed files with 38 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6b9686211374a9751ae70a95fd1fcfb8c2a80698
+refs/heads/master: f038f9a361a764ed013447174b7170073f89cbe9
diff --git a/trunk/drivers/misc/Kconfig b/trunk/drivers/misc/Kconfig
@@ -178,4 +178,13 @@ config THINKPAD_ACPI_BAY
 
 	  If you are not sure, say Y here.
 
+config BLINK
+	tristate "Keyboard blink driver"
+	help
+	  Driver that when loaded will blink the keyboard LEDs continuously.
+	  This is useful for debugging and for kernels that cannot necessarily
+	  output something to the screen like kexec kernels to give the user
+	  a visual indication that the kernel is doing something.
+
+
 endmenu
diff --git a/trunk/drivers/misc/Makefile b/trunk/drivers/misc/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_IBM_ASM)		+= ibmasm/
 obj-$(CONFIG_HDPU_FEATURES)	+= hdpuftrs/
 obj-$(CONFIG_MSI_LAPTOP)     += msi-laptop.o
 obj-$(CONFIG_ASUS_LAPTOP)     += asus-laptop.o
+obj-$(CONFIG_BLINK)		+= blink.o
 obj-$(CONFIG_LKDTM)		+= lkdtm.o
 obj-$(CONFIG_TIFM_CORE)       	+= tifm_core.o
 obj-$(CONFIG_TIFM_7XX1)       	+= tifm_7xx1.o

diff --git a/trunk/drivers/misc/blink.c b/trunk/drivers/misc/blink.c
@@ -0,0 +1,27 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
+
+static void do_blink(unsigned long data);
+
+static DEFINE_TIMER(blink_timer, do_blink, 0 ,0);
+
+static void do_blink(unsigned long data)
+{
+	static long count;
+	if (panic_blink)
+		panic_blink(count++);
+	blink_timer.expires = jiffies + msecs_to_jiffies(1);
+	add_timer(&blink_timer);
+}
+
+static int blink_init(void)
+{
+	printk(KERN_INFO "Enabling keyboard blinking\n");
+	do_blink(0);
+	return 0;
+}
+
+module_init(blink_init);
+