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-rw-r--r--arch/mips/loongson/lemote-2f/Makefile6
-rw-r--r--arch/mips/loongson/lemote-2f/pm.c73
2 files changed, 79 insertions, 0 deletions
diff --git a/arch/mips/loongson/lemote-2f/Makefile b/arch/mips/loongson/lemote-2f/Makefile
index da543b1..5add7b2 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 0000000..8090d05
--- /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;
+ }
+}
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