RK3288 android7.1异形屏修改补丁的设计该怎样去实现呢

0.dts190x1080 -- diff.git1.build.prop 中添加的
构图属性 下面：
persist.sy***uffer.main=1920x600@60  
2.hardware/hwcomposer/hwcomposer 合入下面修改：

diff/hwcomposer .cpp b/hwcomposer.cpp
索引 0fd2177..3ad13a9 100755
--- a/hwcomposer.cpp
+++ b/hwcomposer.cpp
@@ -3498,8 +3498,10 @@ static int hwc_get_display_configs(struct hwc_composer_device_1 *dev,

   char framebuffer_size[PROPERTY_VALUE_MAX];
   uint32_t width = 0, height = 0, vrefresh = 0;
+ if (display == HWC_DISPLAY_PRIMARY)
   property_get("persist.sys.framebuffer.main", framebuffer_size, "use_baseparameter");
-
+ else if （显示 == HWC_DISPLAY_EXTERNAL）
+ property_get("persist.sys.framebuffer.aux", framebuffer_size, "use_baseparameter");
   /*
    * 如果未设置 framebuffer_size，则通过 libin 从 baseparameter 获取它
    */

@@ -2298,7 +2301,8 @@ static int hwc_prepare(hwc_composer_device_1_t *dev, size_t num_displays,
     hd->rel_yres = mode.v_display();
     hd->v_total = mode.v_total();
     hd->w_scale = (float)mode.h_display() / hd->framebuffer_width;
- hd->h_scale = (float)mode.v_display() / hd->framebuffer_height;
+ //hd->h_scale = (float)mode.v_display() / hd->framebuffer_height;
+ hd->h_scale = 1.0;
     int fbSize = hd->framebuffer_width * hd->framebuffer_height;
     //获取显示平面大小
     std::vector& plane_groups = ctx->drm.GetPlaneGroups();
@@ -3638,7 +3647,8 @@ static int hwc_set_active_config(struct hwc_composer_device_1 *dev, int display,
     return -ENOENT;
   }
   hd->w_scale = (float)mode.h_display() / hd->framebuffer_width;
- hd ->h_scale = (float)mode.v_display() / hd->framebuffer_height;
+ //hd->h_scale = (float)mode.v_display() / hd->framebuffer_height;
+ hd->h_scale = 1.0;

   c- >set_current_mode(mode);
   ctx->drm.UpdateDisplayRoute();