From: yxj <yxj@rock-chips.com>
Date: Sat, 14 Jul 2012 10:56:34 +0000 (+0800)
Subject: rkfb:add three buffer support for menuconfig,redefine  FBIOPUT_NUM_BUFFERS     0x4625
X-Git-Tag: firefly_0821_release~9004
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b3ecdc5ac2ac7d4aa405fec6acddc9f0dc3d9dd9;p=firefly-linux-kernel-4.4.55.git

rkfb:add three buffer support for menuconfig,redefine  FBIOPUT_NUM_BUFFERS     0x4625
---

diff --git a/arch/arm/mach-rk30/board-rk30-sdk.c b/arch/arm/mach-rk30/board-rk30-sdk.c
index 31911f44708a..134035e44943 100755
--- a/arch/arm/mach-rk30/board-rk30-sdk.c
+++ b/arch/arm/mach-rk30/board-rk30-sdk.c
@@ -64,7 +64,11 @@
 #include "../../../drivers/staging/android/timed_gpio.h"
 #endif
 
+#ifdef  CONFIG_THREE_FB_BUFFER
 #define RK30_FB0_MEM_SIZE 12*SZ_1M
+#else
+#define RK30_FB0_MEM_SIZE 8*SZ_1M
+#endif
 
 #ifdef CONFIG_VIDEO_RK29
 /*---------------- Camera Sensor Macro Define Begin  ------------------------*/
diff --git a/drivers/video/rockchip/Kconfig b/drivers/video/rockchip/Kconfig
index 79cbc113595c..06cd988688dc 100644
--- a/drivers/video/rockchip/Kconfig
+++ b/drivers/video/rockchip/Kconfig
@@ -40,5 +40,12 @@ config DUAL_DISP_IN_KERNEL
 	default y if HDMI_RK30
 	help
 	  select y will implement dual screen display in kernel
+
+config THREE_FB_BUFFER
+	bool "Three fb buffer support"
+	depends on FB_ROCKCHIP
+	default y
+	help
+	   select y if android support three buffer,like Jelly Bean
 source "drivers/video/rockchip/hdmi/Kconfig"
 source "drivers/video/rockchip/rga/Kconfig"
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 97e479bdc8c5..34fcd09307e0 100755
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -27,7 +27,7 @@
 #define FBIOPUT_SET_CURSOR_CMAP    0x460c
 #define FBIOPUT_GET_CURSOR_RESOLUTION    0x460d
 #define FBIOPUT_GET_CURSOR_EN    0x460e
-#define FBIOPUT_NUM_BUFFERS 	0x460f
+#define FBIOPUT_NUM_BUFFERS 	0x4625
 
 #ifdef __KERNEL__
 #define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor_user)