From: yxj <yxj@rock-chips.com>
Date: Wed, 23 Jan 2013 03:34:26 +0000 (+0800)
Subject: rk screen:add interface to calculator fb size by screen resolution
X-Git-Tag: firefly_0821_release~7842
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4673caa440bcbb71a7e978ad90bcd7c26f00a3f0;p=firefly-linux-kernel-4.4.55.git

rk screen:add interface to calculator fb size by screen resolution
---

diff --git a/drivers/video/display/screen/lcd_LP097QX1.c b/drivers/video/display/screen/lcd_LP097QX1.c
index 27b9ed821077..1b93c87bf45d 100644
--- a/drivers/video/display/screen/lcd_LP097QX1.c
+++ b/drivers/video/display/screen/lcd_LP097QX1.c
@@ -117,3 +117,15 @@ void set_lcd_info(struct rk29fb_screen *screen, struct rk29lcd_info *lcd_info )
     screen->standby = NULL;
     screen->dsp_lut = dsp_lut;
 }
+
+size_t get_fb_size(void)
+{
+	size_t size = 0;
+	#if defined(CONFIG_THREE_FB_BUFFER)
+		size = ((H_VD)*(V_VD)<<2)* 3; //three buffer
+	#else
+		size = ((H_VD)*(V_VD)<<2)<<1; //two buffer
+	#endif
+	return ALIGN(size,SZ_1M);
+}
+
diff --git a/drivers/video/display/screen/lcd_b101ew05.c b/drivers/video/display/screen/lcd_b101ew05.c
index c667c5453c2c..89494ec81df9 100755
--- a/drivers/video/display/screen/lcd_b101ew05.c
+++ b/drivers/video/display/screen/lcd_b101ew05.c
@@ -340,3 +340,14 @@ void set_lcd_info(struct rk29fb_screen *screen, struct rk29lcd_info *lcd_info )
     	screen->sscreen_set = rk610_lcd_scaler_set_param;
 #endif
 }
+
+size_t get_fb_size(void)
+{
+	size_t size = 0;
+	#if defined(CONFIG_THREE_FB_BUFFER)
+		size = ((H_VD)*(V_VD)<<2)* 3; //three buffer
+	#else
+		size = ((H_VD)*(V_VD)<<2)<<1; //two buffer
+	#endif
+	return ALIGN(size,SZ_1M);
+}
diff --git a/drivers/video/display/screen/lcd_ds1006h.c b/drivers/video/display/screen/lcd_ds1006h.c
index fb8ee356ce75..2ad348da37f3 100755
--- a/drivers/video/display/screen/lcd_ds1006h.c
+++ b/drivers/video/display/screen/lcd_ds1006h.c
@@ -333,3 +333,15 @@ void set_lcd_info(struct rk29fb_screen *screen, struct rk29lcd_info *lcd_info )
     	screen->sscreen_set = rk610_lcd_scaler_set_param;
 #endif
 }
+
+size_t get_fb_size(void)
+{
+	size_t size = 0;
+	#if defined(CONFIG_THREE_FB_BUFFER)
+		size = ((H_VD)*(V_VD)<<2)* 3; //three buffer
+	#else
+		size = ((H_VD)*(V_VD)<<2)<<1; //two buffer
+	#endif
+	return ALIGN(size,SZ_1M);
+}
+
diff --git a/include/linux/rk_screen.h b/include/linux/rk_screen.h
index ef3688cb4201..700a157eca3b 100644
--- a/include/linux/rk_screen.h
+++ b/include/linux/rk_screen.h
@@ -154,6 +154,7 @@ struct rk29fb_info {
 static inline void set_lcd_info(struct rk29fb_screen *screen, struct rk29lcd_info *lcd_info) {}
 #else
 extern void set_lcd_info(struct rk29fb_screen *screen, struct rk29lcd_info *lcd_info);
+extern size_t get_fb_size(void);
 #endif
 extern void set_tv_info(struct rk29fb_screen *screen);
 extern void set_hdmi_info(struct rk29fb_screen *screen);