RK android13默认横屏

原创已于 2023-07-13 15:45:33 修改 · 1.7k 阅读

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#android

于 2023-07-05 09:49:41 首次发布

本文介绍了两种让Android系统默认启动为横屏的实现方式。第一种通过修改BoardConfig.mk和设备特定文件设置屏幕旋转参数；第二种涉及SurfaceFlinger.cpp源码修改，动态检测屏幕状态以强制横屏。同时，文中还提及了Recovery界面横屏的配置方法。

ACE-Step

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ACE-Step

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实现默认横屏有两套方案：

第一种方式：目录 device/rockchip/rk356x/BoardConfig.mk

SF_PRIMARY_DISPLAY_ORIENTATION := 90

# For Recovery Rotation recovery界面
TARGET_RECOVERY_DEFAULT_ROTATION ?= ROTATION_RIGHT

实际上

build/make/core/Makefile

ifdef TARGET_RECOVERY_DEFAULT_ROTATION
FINAL_VENDOR_DEFAULT_PROPERTIES += \
ro.minui.default_rotation=$(TARGET_RECOVERY_DEFAULT_ROTATION)
endif

device/rockchip/common/device_xxxx.mk

# For screen hw rotation
ifneq ($(filter 90 180 270, $(strip $(SF_PRIMARY_DISPLAY_ORIENTATION))), )
PRODUCT_DEFAULT_PROPERTY_OVERRIDES += \
ro.surface_flinger.primary_display_orientation=ORIENTATION_$(SF_PRIMARY_DISPLAY_ORIENTATION)
endif

第二种方式：是基于第一种在代码中实现具体的属性设置

Android系统默认是竖屏显示的,想要完成横屏显示，按以下步骤配置即可实现功能：

目录frameworks/native

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 7489280328..7362401b7f 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -153,6 +153,7 @@
#undef NO_THREAD_SAFETY_ANALYSIS
#define NO_THREAD_SAFETY_ANALYSIS \
     _Pragma("GCC error \"Prefer <ftl/fake_guard.h> or MutexUtils.h helpers.\"")
+#define DP_STATUS "/sys/class/drm/card0-eDP-1/status"

namespace android {

@@ -2438,6 +2439,22 @@ bool SurfaceFlinger::isHdrLayer(Layer* layer) const {

ui::Rotation SurfaceFlinger::getPhysicalDisplayOrientation(DisplayId displayId,
                                                            bool isPrimary) const {
+    char dp_statu[128] = { "disconnected"};
+    int fd = open(DP_STATUS, O_RDONLY);
+    if (fd != -1) {
:...skipping...
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 7489280328..7362401b7f 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -153,6 +153,7 @@
#undef NO_THREAD_SAFETY_ANALYSIS
#define NO_THREAD_SAFETY_ANALYSIS \
     _Pragma("GCC error \"Prefer <ftl/fake_guard.h> or MutexUtils.h helpers.\"")
+#define DP_STATUS "/sys/class/drm/card0-eDP-1/status"

namespace android {

@@ -2438,6 +2439,22 @@ bool SurfaceFlinger::isHdrLayer(Layer* layer) const {

ui::Rotation SurfaceFlinger::getPhysicalDisplayOrientation(DisplayId displayId,
                                                            bool isPrimary) const {
+
+    ALOGD("wancg SurfaceFlinger::getPhysicalDisplayOrientation start");
+    char dp_statu[128] = { "disconnected"};
+    int fd = open(DP_STATUS, O_RDONLY);
+    if (fd != -1) {
+        read(fd, dp_statu, sizeof(dp_statu));
+        close(fd);
+        ALOGW("wancg: read dp status=%s",dp_statu);
+        if ( strncmp(dp_statu,"connected",8) == 0){
+            ALOGD("wancg:force to set rotation 0 SurfaceFlinger::getPhysicalDisplayOrientation");
+            return ui::ROTATION_90;
+        }
+    }else{
+        ALOGE(":fail open %s",DP_STATUS);
+    }
+
     const auto id = PhysicalDisplayId::tryCast(displayId);
     if (!id) {
         return ui::ROTATION_0;

Recovery界面

目录bootable/recovery

diff --git a/recovery_ui/screen_ui.cpp b/recovery_ui/screen_ui.cpp
index 5efaad04..00ee3ee8 100644
--- a/recovery_ui/screen_ui.cpp
+++ b/recovery_ui/screen_ui.cpp
@@ -54,6 +54,7 @@
#define MIN(a,b)    ((a) < (b) ? (a) : (b))
#undef ABS
#define ABS(a)      ((a) >= 0 ? (a) : (-(a)))
+#define DP_STATUS "/sys/class/drm/card0-eDP-1/status"
enum DirectRenderManager {
     DRM_INNER,
     DRM_OUTER,
@@ -1489,6 +1490,16 @@ int ScreenRecoveryUI::SetSwCallback(int code, int value) {
     rotation_str =
       android::base::GetProperty("ro.minui.default_rotation", "ROTATION_NONE");
   }
+ char dp_statu[128] = { "disconnected"};
+    int fd = open(DP_STATUS, O_RDONLY);
+    if (fd != -1) {
+        read(fd, dp_statu, strlen(dp_statu));
+       close(fd);
+        if ( strncmp(dp_statu,"connected",8) == 0){
+            rotation_str = "ROTATION_RIGHT";
+
+        }
+    }

   if (rotation_str == "ROTATION_RIGHT") {
     gr_rotate(GRRotation::RIGHT);