From: zwl <zwl@rock-chips.com>
Date: Fri, 18 Jul 2014 02:40:44 +0000 (+0800)
Subject: rk fb: add support 4k video rotate and cancel map rotate fb
X-Git-Tag: firefly_0821_release~4968
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6269d4f44ca59a793f336b42a29fae9a8999f883;p=firefly-linux-kernel-4.4.55.git

rk fb: add support 4k video rotate and cancel map rotate fb
---

diff --git a/drivers/video/rockchip/rk_fb.c b/drivers/video/rockchip/rk_fb.c
index 39f7d69d3158..5f181a2056d7 100755
--- a/drivers/video/rockchip/rk_fb.c
+++ b/drivers/video/rockchip/rk_fb.c
@@ -1504,7 +1504,7 @@ static int rk_fb_update_hdmi_win(struct rk_lcdc_win *ext_win,
                 if (ext_win->id == 0) {
                         ext_win->area[0].smem_start =
 	                        rk_fb->fb[rk_fb->num_fb >> 1]->fix.smem_start;
-                        ext_win->area[0].y_offset = (get_fb_size() >> 1) * fb_index;
+                        ext_win->area[0].y_offset = (get_rotate_fb_size() >> 1) * fb_index;
                         if ((++fb_index) > 1)
                                 fb_index = 0;
                 } else {
@@ -3271,7 +3271,8 @@ static int rk_fb_alloc_buffer_by_ion(struct fb_info *fbi,
 		goto err_share_dma_buf;
 	}
 	win->area[0].ion_hdl = handle;
-	fbi->screen_base = ion_map_kernel(rk_fb->ion_client, handle);
+        if (dev_drv->prop == PRMRY)
+	        fbi->screen_base = ion_map_kernel(rk_fb->ion_client, handle);
 #ifdef CONFIG_ROCKCHIP_IOMMU
 	if (dev_drv->iommu_enabled)
 		ion_map_iommu(dev_drv->dev, rk_fb->ion_client, handle,
@@ -3335,7 +3336,7 @@ static int rk_fb_alloc_buffer(struct fb_info *fbi, int fb_id)
 		       fbi->fix.smem_len);
 	} else {
 		if (dev_drv->rotate_mode > X_Y_MIRROR) {
-			fb_mem_size = get_fb_size();
+			fb_mem_size = get_rotate_fb_size();
 #if defined(CONFIG_ION_ROCKCHIP)
 			if (rk_fb_alloc_buffer_by_ion(fbi, win, fb_mem_size) < 0)
 				return -ENOMEM;
diff --git a/drivers/video/rockchip/screen/rk_screen.c b/drivers/video/rockchip/screen/rk_screen.c
index 0c031275d414..bb7e8cb40077 100755
--- a/drivers/video/rockchip/screen/rk_screen.c
+++ b/drivers/video/rockchip/screen/rk_screen.c
@@ -53,6 +53,27 @@ size_t get_fb_size(void)
 	return ALIGN(size, SZ_1M);
 }
 
+#define FB_4K_SIZE      (3840UL*2160UL*2)
+size_t get_rotate_fb_size(void)
+{
+	size_t size = 0;
+	u32 xres = 0;
+	u32 yres = 0;
+
+	if (unlikely(!rk_screen))
+		return 0;
+
+	xres = rk_screen->mode.xres;
+	yres = rk_screen->mode.yres;
+
+	/* align as 64 bytes(16*4) number of times */
+	xres = ALIGN_N_TIMES(xres, ALIGN_PIXEL_64BYTE_RGB8888);
+
+	size = (xres * yres << 2) << 1; /* two buffer */
+        size += 2 * FB_4K_SIZE; /* two full RGB size and two 4k size */
+	return ALIGN(size, SZ_1M);
+}
+
 static int rk_screen_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
diff --git a/include/linux/rk_screen.h b/include/linux/rk_screen.h
index 4ee4960d49d5..367d7c97ad79 100755
--- a/include/linux/rk_screen.h
+++ b/include/linux/rk_screen.h
@@ -141,6 +141,7 @@ struct rk29fb_info {
 
 extern void set_lcd_info(struct rk_screen *screen, struct rk29lcd_info *lcd_info);
 extern size_t get_fb_size(void);
+extern size_t get_rotate_fb_size(void);
 
 extern void set_tv_info(struct rk_screen *screen);
 extern void set_hdmi_info(struct rk_screen *screen);