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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/mn10300/unit-asb2303/leds.c
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/mn10300/unit-asb2303/leds.c')
-rw-r--r--arch/mn10300/unit-asb2303/leds.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/mn10300/unit-asb2303/leds.c b/arch/mn10300/unit-asb2303/leds.c
new file mode 100644
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--- /dev/null
+++ b/arch/mn10300/unit-asb2303/leds.c
@@ -0,0 +1,52 @@
+/* ASB2303 peripheral 7-segment LEDs x1 support
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/intctl-regs.h>
+#include <asm/rtc-regs.h>
+#include <unit/leds.h>
+
+#if 0
+static const u8 asb2303_led_hex_tbl[16] = {
+ 0x80, 0xf2, 0x48, 0x60, 0x32, 0x24, 0x04, 0xf0,
+ 0x00, 0x20, 0x10, 0x06, 0x8c, 0x42, 0x0c, 0x1c
+};
+#endif
+
+static const u8 asb2303_led_chase_tbl[6] = {
+ ~0x02, /* top - segA */
+ ~0x04, /* right top - segB */
+ ~0x08, /* right bottom - segC */
+ ~0x10, /* bottom - segD */
+ ~0x20, /* left bottom - segE */
+ ~0x40, /* left top - segF */
+};
+
+static unsigned asb2303_led_chase;
+
+void peripheral_leds_display_exception(enum exception_code code)
+{
+ ASB2303_GPIO0DEF = 0x5555; /* configure as an output port */
+ ASB2303_7SEGLEDS = 0x6d; /* triple horizontal bar */
+}
+
+void peripheral_leds_led_chase(void)
+{
+ ASB2303_GPIO0DEF = 0x5555; /* configure as an output port */
+ ASB2303_7SEGLEDS = asb2303_led_chase_tbl[asb2303_led_chase];
+ asb2303_led_chase++;
+ if (asb2303_led_chase >= 6)
+ asb2303_led_chase = 0;
+}