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authorJohn Crispin <blogic@openwrt.org>2013-01-20 22:00:57 +0100
committerJohn Crispin <blogic@openwrt.org>2013-02-17 01:25:29 +0100
commitc06e836ada59fbc6d1109277e693e5b3e056ac12 (patch)
tree2dba753c01872704c8dc13487cf603df7513d94d /arch/mips/ralink/reset.c
parent19d3814e7b325f8965fd71f329b3467a97f8d217 (diff)
MIPS: ralink: adds reset code
Resetting these SoCs requires no real magic. The code is straight forward. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/4891/
Diffstat (limited to 'arch/mips/ralink/reset.c')
-rw-r--r--arch/mips/ralink/reset.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/mips/ralink/reset.c b/arch/mips/ralink/reset.c
new file mode 100644
index 000000000000..22120e512e7e
--- /dev/null
+++ b/arch/mips/ralink/reset.c
@@ -0,0 +1,44 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/pm.h>
+#include <linux/io.h>
+
+#include <asm/reboot.h>
+
+#include <asm/mach-ralink/ralink_regs.h>
+
+/* Reset Control */
+#define SYSC_REG_RESET_CTRL 0x034
+#define RSTCTL_RESET_SYSTEM BIT(0)
+
+static void ralink_restart(char *command)
+{
+ local_irq_disable();
+ rt_sysc_w32(RSTCTL_RESET_SYSTEM, SYSC_REG_RESET_CTRL);
+ unreachable();
+}
+
+static void ralink_halt(void)
+{
+ local_irq_disable();
+ unreachable();
+}
+
+static int __init mips_reboot_setup(void)
+{
+ _machine_restart = ralink_restart;
+ _machine_halt = ralink_halt;
+ pm_power_off = ralink_halt;
+
+ return 0;
+}
+
+arch_initcall(mips_reboot_setup);