gpio: amd-fch: Set proper output level for direction_output

Current amd_fch_gpio_direction_output implementation ignores the value
argument, fix it so direction_output will set proper output level.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Enrico Weigelt <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-amd-fch.c

@@ -65,9 +65,18 @@ static int amd_fch_gpio_direction_output(struct gpio_chip *gc,
 	unsigned long flags;
 	struct amd_fch_gpio_priv *priv = gpiochip_get_data(gc);
 	void __iomem *ptr = amd_fch_gpio_addr(priv, gpio);
+	u32 val;
 
 	spin_lock_irqsave(&priv->lock, flags);
-	writel_relaxed(readl_relaxed(ptr) | AMD_FCH_GPIO_FLAG_DIRECTION, ptr);
+
+	val = readl_relaxed(ptr);
+	if (value)
+		val |= AMD_FCH_GPIO_FLAG_WRITE;
+	else
+		val &= ~AMD_FCH_GPIO_FLAG_WRITE;
+
+	writel_relaxed(val | AMD_FCH_GPIO_FLAG_DIRECTION, ptr);
+
 	spin_unlock_irqrestore(&priv->lock, flags);
 
 	return 0;