sdm710-common: Implement SunlightEnhancement LiveDisplay HAL

* Add LiveDisplay HAL and SunlightEnhancement using 'hbm' sysfs knob

Change-Id: I4583e45427d689827b020ca960f37f6fa92e3d11

livedisplay/Android.bp

@@ -0,0 +1,35 @@
+//
+// Copyright (C) 2022 The LineageOS Project
+//
+// Licensed under the Apache License, Version 2.1 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.1
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_binary {
+    name: "vendor.lineage.livedisplay@2.1-service.sdm710",
+    defaults: ["hidl_defaults"],
+    vintf_fragments: ["vendor.lineage.livedisplay@2.1-service.sdm710.xml"],
+    init_rc: ["vendor.lineage.livedisplay@2.1-service.sdm710.rc"],
+    relative_install_path: "hw",
+    srcs: [
+        "SunlightEnhancement.cpp",
+        "service.cpp",
+    ],
+    vendor: true,
+    shared_libs: [
+        "libbase",
+        "libbinder",
+        "libhidlbase",
+        "libutils",
+        "vendor.lineage.livedisplay@2.0",
+        "vendor.lineage.livedisplay@2.1",
+    ],
+}

livedisplay/SunlightEnhancement.cpp

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "SunlightEnhancementService"
+
+#include <fstream>
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+
+#include "SunlightEnhancement.h"
+
+namespace vendor {
+namespace lineage {
+namespace livedisplay {
+namespace V2_1 {
+namespace implementation {
+
+static constexpr const char* kHbmPath = "/sys/devices/platform/soc/soc:qcom,dsi-display-primary/hbm";
+
+bool SunlightEnhancement::isSupported() {
+    std::ofstream hbm_file(kHbmPath);
+    if (!hbm_file.is_open()) {
+        LOG(ERROR) << "Failed to open " << kHbmPath << ", error=" << errno
+                   << " (" << strerror(errno) << ")";
+    }
+    return !hbm_file.fail();
+}
+
+Return<bool> SunlightEnhancement::isEnabled() {
+    std::ifstream hbm_file(kHbmPath);
+    int result = -1;
+    hbm_file >> result;
+    return !hbm_file.fail() && result > 0;
+}
+
+Return<bool> SunlightEnhancement::setEnabled(bool enabled) {
+    std::ofstream hbm_file(kHbmPath);
+    hbm_file << (enabled ? '1' : '0');
+    if (hbm_file.fail())
+        LOG(ERROR) << "Failed to write " << kHbmPath;
+    return !hbm_file.fail();
+}
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace livedisplay
+}  // namespace lineage
+}  // namespace vendor

livedisplay/SunlightEnhancement.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <vendor/lineage/livedisplay/2.1/ISunlightEnhancement.h>
+
+namespace vendor {
+namespace lineage {
+namespace livedisplay {
+namespace V2_1 {
+namespace implementation {
+
+using ::android::hardware::Return;
+
+class SunlightEnhancement : public ISunlightEnhancement {
+  public:
+    bool isSupported();
+
+    // Methods from ::vendor::lineage::livedisplay::V2_1::ISunlightEnhancement follow.
+    Return<bool> isEnabled() override;
+    Return<bool> setEnabled(bool enabled) override;
+};
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace livedisplay
+}  // namespace lineage
+}  // namespace vendor

livedisplay/service.cpp

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "vendor.lineage.livedisplay@2.1-service.sdm710"
+
+#include <android-base/logging.h>
+#include <binder/ProcessState.h>
+#include <hidl/HidlTransportSupport.h>
+#include "SunlightEnhancement.h"
+
+using ::vendor::lineage::livedisplay::V2_1::implementation::SunlightEnhancement;
+
+int main() {
+    android::sp<SunlightEnhancement> sunlightEnhancement = new SunlightEnhancement();
+
+    android::hardware::configureRpcThreadpool(1, true /*callerWillJoin*/);
+
+    if (sunlightEnhancement->isSupported()) {
+        if (sunlightEnhancement->registerAsService() != android::OK) {
+            LOG(ERROR) << "Cannot register sunlight enhancement HAL service.";
+	    return 1;
+	}
+    }
+
+    LOG(INFO) << "LiveDisplay HAL service is ready.";
+
+    android::hardware::joinRpcThreadpool();
+
+    LOG(ERROR) << "LiveDisplay HAL service failed to join thread pool.";
+
+    return 1;
+}

livedisplay/vendor.lineage.livedisplay@2.1-service.sdm710.rc

@@ -0,0 +1,7 @@
+on boot
+    chown system system /sys/devices/platform/soc/soc:qcom,dsi-display-primary/hbm
+
+service vendor.livedisplay-hal-2-1 /vendor/bin/hw/vendor.lineage.livedisplay@2.1-service.sdm710
+    class late_start
+    user system
+    group system

livedisplay/vendor.lineage.livedisplay@2.1-service.sdm710.xml

@@ -0,0 +1,7 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>vendor.lineage.livedisplay</name>
+        <transport>hwbinder</transport>
+        <fqname>@2.1::ISunlightEnhancement/default</fqname>
+    </hal>
+</manifest>

sdm710.mk

@@ -220,6 +220,10 @@ PRODUCT_PACKAGES += \
 PRODUCT_PACKAGES += \
     android.hardware.light-service.xiaomi
 
+# LiveDisplay
+PRODUCT_PACKAGES += \
+    vendor.lineage.livedisplay@2.1-service.sdm710
+
 # Media
 PRODUCT_PACKAGES += \
     libavservices_minijail \

sepolicy/vendor/file_contexts

@@ -16,6 +16,7 @@
 /sys/devices/platform/soc/[a-z0-9]+.qcom,mdss_mdp/drm/card([0-3])+/card([0-3])+-DSI-1/hbm_status        u:object_r:sysfs_graphics:s0
 /sys/devices/platform/soc/[a-z0-9]+.qcom,mdss_mdp/drm/card([0-3])+/card([0-3])+-DSI-1/panel_info        u:object_r:sysfs_graphics:s0
 /sys/devices/platform/soc/[a-z0-9]+.qcom,mdss_mdp/drm/card([0-3])+/card([0-3])+-DSI-1/smart_fps_value   u:object_r:sysfs_graphics:s0
+/vendor/bin/hw/vendor\.lineage\.livedisplay@2\.1-service\.sdm710                                        u:object_r:hal_lineage_livedisplay_qti_exec:s0
 
 # Fingerprint
 /vendor/bin/hw/android\.hardware\.biometrics\.fingerprint@2\.3-service\.xiaomi                   u:object_r:hal_fingerprint_default_exec:s0

sepolicy/vendor/hal_lineage_livedisplay_qti.te

@@ -0,0 +1,2 @@
+allow hal_lineage_livedisplay_qti sysfs_graphics:dir search;
+allow hal_lineage_livedisplay_qti sysfs_graphics:file rw_file_perms;