Input: tosakbd - fix suspend

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 18 insertions, 3 deletions

diff --git a/drivers/input/keyboard/tosakbd.c b/drivers/input/keyboard/tosakbd.c
index 3884d1e3f070..a247006757de 100644
--- a/drivers/input/keyboard/tosakbd.c
+++ b/drivers/input/keyboard/tosakbd.c
@@ -52,7 +52,7 @@ KEY_X, KEY_F, KEY_SPACE, KEY_APOSTROPHE, TOSA_KEY_MAIL, KEY_LEFT, KEY_DOWN, KEY_
 struct tosakbd {
         unsigned int keycode[ARRAY_SIZE(tosakbd_keycode)];
         struct input_dev *input;
-
+        int suspended;
         spinlock_t lock; /* protect kbd scanning */
         struct timer_list timer;
 };
@@ -133,6 +133,9 @@ static void tosakbd_scankeyboard(struct platform_device *dev)
 
         spin_lock_irqsave(&tosakbd->lock, flags);
 
+        if (tosakbd->suspended)
+                goto out;
+
         for (col = 0; col < TOSA_KEY_STROBE_NUM; col++) {
                 /*
                  * Discharge the output driver capacitatance
@@ -174,6 +177,7 @@ static void tosakbd_scankeyboard(struct platform_device *dev)
         if (num_pressed)
                 mod_timer(&tosakbd->timer, jiffies + SCAN_INTERVAL);
 
+ out:
         spin_unlock_irqrestore(&tosakbd->lock, flags);
 }
 
@@ -200,6 +204,7 @@ static irqreturn_t tosakbd_interrupt(int irq, void *__dev)
 static void tosakbd_timer_callback(unsigned long __dev)
 {
         struct platform_device *dev = (struct platform_device *)__dev;
+
         tosakbd_scankeyboard(dev);
 }
 
@@ -207,6 +212,13 @@ static void tosakbd_timer_callback(unsigned long __dev)
 static int tosakbd_suspend(struct platform_device *dev, pm_message_t state)
 {
         struct tosakbd *tosakbd = platform_get_drvdata(dev);
+        unsigned long flags;
+
+        spin_lock_irqsave(&tosakbd->lock, flags);
+        PGSR1 = (PGSR1 & ~TOSA_GPIO_LOW_STROBE_BIT);
+        PGSR2 = (PGSR2 & ~TOSA_GPIO_HIGH_STROBE_BIT);
+        tosakbd->suspended = 1;
+        spin_unlock_irqrestore(&tosakbd->lock, flags);
 
         del_timer_sync(&tosakbd->timer);
 
@@ -215,6 +227,9 @@ static int tosakbd_suspend(struct platform_device *dev, pm_message_t state)
 
 static int tosakbd_resume(struct platform_device *dev)
 {
+        struct tosakbd *tosakbd = platform_get_drvdata(dev);
+
+        tosakbd->suspended = 0;
         tosakbd_scankeyboard(dev);
 
         return 0;
@@ -365,8 +380,8 @@ fail:
         return error;
 }
 
-static int __devexit tosakbd_remove(struct platform_device *dev) {
-
+static int __devexit tosakbd_remove(struct platform_device *dev)
+{
         int i;
         struct tosakbd *tosakbd = platform_get_drvdata(dev);