From: Mark Yao <mark.yao@rock-chips.com>
Date: Tue, 11 Apr 2017 02:15:17 +0000 (+0800)
Subject: video/rockchip: rga2: force rga version if hardware not support
X-Git-Tag: firefly_0821_release~67
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=firefly-linux-kernel-4.4.55.git;a=commitdiff_plain;h=a8fc40ce6f61a749f597b7ee58e81a7854601ec9;hp=1972867db9d17f5d9398f4df9e65b88a189e6e18

video/rockchip: rga2: force rga version if hardware not support

Change-Id: I95323b5f46228561266b2352815f0d15851fa6ce
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
---

diff --git a/drivers/video/rockchip/rga2/rga2_drv.c b/drivers/video/rockchip/rga2/rga2_drv.c
index 936411d895cd..850d20f33f34 100644
--- a/drivers/video/rockchip/rga2/rga2_drv.c
+++ b/drivers/video/rockchip/rga2/rga2_drv.c
@@ -178,6 +178,11 @@ static inline int rga2_init_version(void)
 	major_version = (reg_version & RGA2_MAJOR_VERSION_MASK) >> 24;
 	minor_version = (reg_version & RGA2_MINOR_VERSION_MASK) >> 20;
 
+	/*
+	 * some old rga ip has no rga version register, so force set to 2.00
+	 */
+	if (!major_version && !minor_version)
+		major_version = 2;
 	sprintf(rga->version, "%d.%02d", major_version, minor_version);
 
 	return 0;