?設置主副屏幕顯示

修改主副屏幕配置屬性

device/rockchip/rk3288/system.prop

-sys.hwc.device.primary=LVDS -sys.hwc.device.extend=HDMI-A,eDP +persist.hwc.device.primary=LVDS +persist.hwc.device.extend=HDMI-A,eDP

frameworks/base/services/core/jni/com_android_server_rkdisplay_RkDisplayModes.cpp

@@ -118,7 +118,7 @@ static void updateConnectors(){}ALOGD("crtc: %d %d foundHdmi %d", crtcId1, crtcId2, foundHdmi);char property[PROPERTY_VALUE_MAX]; - property_get("sys.hwc.device.primary", property, "null"); + property_get("persist.hwc.device.primary", property, "null");if (crtcId1 == crtcId2 && foundHdmi && strstr(property, "HDMI-A") == NULL) {for (auto &conn : drm_->connectors()) {if (builtInHdmi(conn->get_type()) && conn->state() == DRM_MODE_CONNECTED) { @@ -365,7 +365,7 @@ static void saveHwcInitalInfo(struct file_base_paramer *base_paramer, int dpy){base_paramer->main.hwc_info.framebuffer_height = 1080;base_paramer->main.hwc_info.fps = 60.00;memset(property,0,sizeof(property)); - len = property_get("sys.hwc.device.primary", property, NULL); + len = property_get("persist.hwc.device.primary", property, NULL);if (len) {memcpy(base_paramer->main.hwc_info.device, property, strlen(property));} else { @@ -378,7 +378,7 @@ static void saveHwcInitalInfo(struct file_base_paramer *base_paramer, int dpy){base_paramer->aux.hwc_info.framebuffer_height = 1080;base_paramer->aux.hwc_info.fps = 60.00;memset(property,0,sizeof(property)); - len = property_get("sys.hwc.device.extend", property, NULL); + len = property_get("persist.hwc.device.extend", property, NULL);if (len)memcpy(base_paramer->aux.hwc_info.device, property, strlen(property));else

frameworks/base/services/core/jni/rkdisplay/drmresources.cpp

- primary_length = property_get("sys.hwc.device.primary", primary_name, NULL); - extend_length = property_get("sys.hwc.device.extend", extend_name, NULL); + primary_length = property_get("persist.hwc.device.primary", primary_name, NULL); + extend_length = property_get("persist.hwc.device.extend", extend_name, NULL);

hardware/rockchip/hwcomposer/drmresources.cpp

- primary_length = property_get("sys.hwc.device.primary", primary_name, NULL); - extend_length = property_get("sys.hwc.device.extend", extend_name, NULL); + primary_length = property_get("persist.hwc.device.primary", primary_name, NULL); + extend_length = property_get("persist.hwc.device.extend", extend_name, NULL);

關于主副屏幕切換問題已在第一篇的服務中介紹，在U盤rk_lcd_screen文件中添加

????????primary=LVDS（主屏幕顯示） ????????extend=HDMI-A（副屏幕顯示） 服務會將設置的屏幕添加到系統屬性中。

總結

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