3 files changed, 72 insertions, 4 deletions

diff --git a/arch/mips/include/asm/mach-loongson/loongson.h b/arch/mips/include/asm/mach-loongson/loongson.h
index a7fa66e85988..06c28f387116 100644
--- a/arch/mips/include/asm/mach-loongson/loongson.h
+++ b/arch/mips/include/asm/mach-loongson/loongson.h
@@ -41,6 +41,7 @@ extern void __init bonito_irq_init(void);
 extern void __init set_irq_trigger_mode(void);
 extern void __init mach_init_irq(void);
 extern void mach_irq_dispatch(unsigned int pending);
+extern int mach_i8259_irq(void);
 
 /* We need this in some places... */
 #define delay() ({              \
diff --git a/arch/mips/loongson/lemote-2f/irq.c b/arch/mips/loongson/lemote-2f/irq.c
index 50e7bb6012b7..77d32f9cf31e 100644
--- a/arch/mips/loongson/lemote-2f/irq.c
+++ b/arch/mips/loongson/lemote-2f/irq.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/interrupt.h>
+#include <linux/module.h>
 
 #include <asm/irq_cpu.h>
 #include <asm/i8259.h>
@@ -30,7 +31,7 @@
  * The generic i8259_irq() make the kernel hang on booting.  Since we cannot
  * get the irq via the IRR directly, we access the ISR instead.
  */
-static inline int mach_i8259_irq(void)
+int mach_i8259_irq(void)
 {
         int irq, isr;
 
@@ -60,6 +61,7 @@ static inline int mach_i8259_irq(void)
 
         return irq;
 }
+EXPORT_SYMBOL(mach_i8259_irq);
 
 static void i8259_irqdispatch(void)
 {
diff --git a/arch/mips/loongson/lemote-2f/pm.c b/arch/mips/loongson/lemote-2f/pm.c
index 8090d0514221..81c06410aa76 100644
--- a/arch/mips/loongson/lemote-2f/pm.c
+++ b/arch/mips/loongson/lemote-2f/pm.c
@@ -14,6 +14,7 @@
 #include <linux/interrupt.h>
 #include <linux/pm.h>
 #include <linux/i8042.h>
+#include <linux/module.h>
 
 #include <asm/i8259.h>
 #include <asm/mipsregs.h>
@@ -21,6 +22,8 @@
 
 #include <loongson.h>
 
+#include "ec_kb3310b.h"
+
 #define I8042_KBD_IRQ           1
 #define I8042_CTR_KBDINT        0x01
 #define I8042_CTR_KBDDIS        0x10
@@ -49,9 +52,6 @@ static int i8042_enable_kbd_port(void)
         return 0;
 }
 
-/*
- * The i8042 is connnected to i8259A
- */
 void setup_wakeup_events(void)
 {
         int irq_mask;
@@ -65,9 +65,74 @@ void setup_wakeup_events(void)
 
                 /* enable keyboard port */
                 i8042_enable_kbd_port();
+
+                /* Wakeup CPU via SCI lid open event */
+                outb(irq_mask & ~(1 << PIC_CASCADE_IR), PIC_MASTER_IMR);
+                inb(PIC_MASTER_IMR);
+                outb(0xff & ~(1 << (SCI_IRQ_NUM - 8)), PIC_SLAVE_IMR);
+                inb(PIC_SLAVE_IMR);
+
                 break;
 
         default:
                 break;
         }
 }
+
+static struct delayed_work lid_task;
+static int initialized;
+/* yeeloong_report_lid_status will be implemented in yeeloong_laptop.c */
+sci_handler yeeloong_report_lid_status;
+EXPORT_SYMBOL(yeeloong_report_lid_status);
+static void yeeloong_lid_update_task(struct work_struct *work)
+{
+        if (yeeloong_report_lid_status)
+                yeeloong_report_lid_status(BIT_LID_DETECT_ON);
+}
+
+int wakeup_loongson(void)
+{
+        int irq;
+
+        /* query the interrupt number */
+        irq = mach_i8259_irq();
+        if (irq < 0)
+                return 0;
+
+        printk(KERN_INFO "%s: irq = %d\n", __func__, irq);
+
+        if (irq == I8042_KBD_IRQ)
+                return 1;
+        else if (irq == SCI_IRQ_NUM) {
+                int ret, sci_event;
+                /* query the event number */
+                ret = ec_query_seq(CMD_GET_EVENT_NUM);
+                if (ret < 0)
+                        return 0;
+                sci_event = ec_get_event_num();
+                if (sci_event < 0)
+                        return 0;
+                if (sci_event == EVENT_LID) {
+                        int lid_status;
+                        /* check the LID status */
+                        lid_status = ec_read(REG_LID_DETECT);
+                        /* wakeup cpu when people open the LID */
+                        if (lid_status == BIT_LID_DETECT_ON) {
+                                /* If we call it directly here, the WARNING
+                                 * will be sent out by getnstimeofday
+                                 * via "WARN_ON(timekeeping_suspended);"
+                                 * because we can not schedule in suspend mode.
+                                 */
+                                if (initialized == 0) {
+                                        INIT_DELAYED_WORK(&lid_task,
+                                                yeeloong_lid_update_task);
+                                        initialized = 1;
+                                }
+                                schedule_delayed_work(&lid_task, 1);
+                                return 1;
+                        }
+                }
+        }
+
+        return 0;
+}