fb: add sys point for dual display mode

diff --git a/drivers/video/rockchip/rkfb_sysfs.c b/drivers/video/rockchip/rkfb_sysfs.c
index 4e148fe90722a844314277737fa235bdf4ca9d8c..be9b6f72f1b90162db622dd8ced88137b43d8744 100644 (file)
--- a/drivers/video/rockchip/rkfb_sysfs.c
+++ b/drivers/video/rockchip/rkfb_sysfs.c
@@ -91,6 +91,22 @@ static ssize_t show_fb_state(struct device *dev,
        return snprintf(buf, PAGE_SIZE, "%s\n",state?"enabled":"disabled");
        
 }
+
+static ssize_t show_dual_mode(struct device *dev,
+               struct device_attribute *attr, char *buf)
+{
+       int mode=0;
+#if defined(CONFIG_ONE_LCDC_DUAL_OUTPUT_INF)
+       mode = 1;
+#elif defined(CONFIG_DUAL_LCDC_DUAL_DISP_IN_KERNEL)
+       mode = 2;
+#else
+       mode = 0;
+#endif
+       return snprintf(buf, PAGE_SIZE, "%d\n",mode);
+       
+}
+
 static ssize_t set_fb_state(struct device *dev,struct device_attribute *attr,
        const char *buf, size_t count)
 {
@@ -295,6 +311,7 @@ static struct device_attribute rkfb_attrs[] = {
        __ATTR(virt_addr, S_IRUGO, show_virt, NULL),
        __ATTR(disp_info, S_IRUGO, show_disp_info, NULL),
        __ATTR(screen_info, S_IRUGO, show_screen_info, NULL),
+       __ATTR(dual_mode, S_IRUGO, show_dual_mode, NULL),
        __ATTR(enable, S_IRUGO | S_IWUSR, show_fb_state, set_fb_state),
        __ATTR(overlay, S_IRUGO | S_IWUSR, show_overlay, set_overlay),
        __ATTR(fps, S_IRUGO | S_IWUSR, show_fps, set_fps),