2 files changed, 79 insertions, 0 deletions

diff --git a/arch/mips/loongson/lemote-2f/Makefile b/arch/mips/loongson/lemote-2f/Makefile
index da543b1b51e..5add7b2ead1 100644
--- a/arch/mips/loongson/lemote-2f/Makefile
+++ b/arch/mips/loongson/lemote-2f/Makefile
@@ -3,3 +3,9 @@
 #
 
 obj-y += irq.o reset.o
+
+#
+# Suspend Support
+#
+
+obj-$(CONFIG_LOONGSON_SUSPEND) += pm.o
diff --git a/arch/mips/loongson/lemote-2f/pm.c b/arch/mips/loongson/lemote-2f/pm.c
new file mode 100644
index 00000000000..8090d051422
--- /dev/null
+++ b/arch/mips/loongson/lemote-2f/pm.c
@@ -0,0 +1,73 @@
+/*
+ *  Lemote loongson2f family machines' specific suspend support
+ *
+ *  Copyright (C) 2009 Lemote Inc.
+ *  Author: Wu Zhangjin <wuzj@lemote.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/suspend.h>
+#include <linux/interrupt.h>
+#include <linux/pm.h>
+#include <linux/i8042.h>
+
+#include <asm/i8259.h>
+#include <asm/mipsregs.h>
+#include <asm/bootinfo.h>
+
+#include <loongson.h>
+
+#define I8042_KBD_IRQ           1
+#define I8042_CTR_KBDINT        0x01
+#define I8042_CTR_KBDDIS        0x10
+
+static unsigned char i8042_ctr;
+
+static int i8042_enable_kbd_port(void)
+{
+        if (i8042_command(&i8042_ctr, I8042_CMD_CTL_RCTR)) {
+                pr_err("i8042.c: Can't read CTR while enabling i8042 kbd port."
+                       "\n");
+                return -EIO;
+        }
+
+        i8042_ctr &= ~I8042_CTR_KBDDIS;
+        i8042_ctr |= I8042_CTR_KBDINT;
+
+        if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
+                i8042_ctr &= ~I8042_CTR_KBDINT;
+                i8042_ctr |= I8042_CTR_KBDDIS;
+                pr_err("i8042.c: Failed to enable KBD port.\n");
+
+                return -EIO;
+        }
+
+        return 0;
+}
+
+/*
+ * The i8042 is connnected to i8259A
+ */
+void setup_wakeup_events(void)
+{
+        int irq_mask;
+
+        switch (mips_machtype) {
+        case MACH_LEMOTE_ML2F7:
+        case MACH_LEMOTE_YL2F89:
+                /* open the keyboard irq in i8259A */
+                outb((0xff & ~(1 << I8042_KBD_IRQ)), PIC_MASTER_IMR);
+                irq_mask = inb(PIC_MASTER_IMR);
+
+                /* enable keyboard port */
+                i8042_enable_kbd_port();
+                break;
+
+        default:
+                break;
+        }
+}