From: zyw <zyw@rock-chips.com>
Date: Mon, 18 Apr 2011 07:50:19 +0000 (+0800)
Subject: add a ioctl case in fb0, return current screen type
X-Git-Tag: firefly_0821_release~10465
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e25444f91784898df9f82cc78fdf944b03491e90;p=firefly-linux-kernel-4.4.55.git

add a ioctl case in fb0, return current screen type
---

diff --git a/drivers/video/rk29_fb.c b/drivers/video/rk29_fb.c
index 7dc827a35c53..7f41873da733 100755
--- a/drivers/video/rk29_fb.c
+++ b/drivers/video/rk29_fb.c
@@ -1549,9 +1549,11 @@ static int fb0_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 	    break;
 	case FBIOPUT_FBPHYADD:
         return info->fix.smem_start;
-   case FBIOGET_OVERLAY_STATE:
+    case FBIOGET_OVERLAY_STATE:
         return inf->video_mode;
-
+    case FBIOGET_SCREEN_STATE:
+        return inf->cur_screen->type;
+        
 	case FBIOPUT_SET_CURSOR_EN:
 		{
 			int en;
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 8d21255801e5..6181f1baafa7 100755
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -46,6 +46,7 @@ struct dentry;
 #define FBIOPUT_MODEINFO        0x4617
 #define FBIOGET_DISPINFO        0x4618
 #define FBIOGET_OVERLAY_STATE   0X4619
+#define FBIOGET_SCREEN_STATE    0X4620
 
 
 #define FB_TYPE_PACKED_PIXELS		0	/* Packed Pixels	*/