mn10300: add the MN10300/AM33 architecture to the kernel

[sfrench/cifs-2.6.git] / arch / mn10300 / unit-asb2303 / leds.c

diff --git a/arch/mn10300/unit-asb2303/leds.c b/arch/mn10300/unit-asb2303/leds.c
new file mode 100644 (file)
index 0000000..cd4bc78
--- /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 <asm/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;
+}