sm8250-common: Implement vendor.lineage.powershare@1.0 HAL

common.mk

@@ -168,6 +168,10 @@ PRODUCT_COPY_FILES += \
 PRODUCT_PACKAGES += \
     android.hardware.power@1.2-service.oneplus_kona
 
+# PowerShare
+PRODUCT_PACKAGES += \
+    lineage.powershare@1.0-service.oneplus_kona
+
 # Ramdisk
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/rootdir/etc/fstab.qcom:$(TARGET_COPY_OUT_RAMDISK)/fstab.qcom

framework_manifest.xml

@@ -34,6 +34,15 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <hal format="hidl">
+        <name>vendor.lineage.powershare</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+            <name>IPowerShare</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="hidl">
         <name>vendor.lineage.trust</name>
         <transport>hwbinder</transport>

powershare/Android.bp

@@ -0,0 +1,32 @@
+//
+// Copyright (C) 2020 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.
+
+cc_binary {
+    relative_install_path: "hw",
+    defaults: ["hidl_defaults"],
+    name: "lineage.powershare@1.0-service.oneplus_kona",
+    init_rc: ["lineage.powershare@1.0-service.oneplus_kona.rc"],
+    srcs: ["service.cpp", "PowerShare.cpp"],
+    shared_libs: [
+        "libbase",
+        "libhardware",
+        "libhidlbase",
+        "libhidltransport",
+        "liblog",
+        "libhwbinder",
+        "libutils",
+        "vendor.lineage.powershare@1.0",
+    ],
+}

powershare/PowerShare.cpp

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2020 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 "PowerShareService"
+
+#include "PowerShare.h"
+#include <hidl/HidlTransportSupport.h>
+#include <fstream>
+
+namespace vendor {
+namespace lineage {
+namespace powershare {
+namespace V1_0 {
+namespace implementation {
+
+#define WIRELESS_TX_ENABLE_PATH "/proc/wireless/enable_tx"
+
+/*
+ * Write value to path and close file.
+ */
+template <typename T>
+static void set(const std::string& path, const T& value) {
+    std::ofstream file(path);
+    file << value;
+}
+
+template <typename T>
+static T get(const std::string& path, const T& def) {
+    std::ifstream file(path);
+    T result;
+
+    file >> result;
+    return file.fail() ? def : result;
+}
+
+Return<bool> PowerShare::isEnabled() {
+    return get<std::string>(WIRELESS_TX_ENABLE_PATH, "disable") != "disable";
+}
+
+Return<bool> PowerShare::setEnabled(bool enable) {
+    set(WIRELESS_TX_ENABLE_PATH, enable ? 1 : 0);
+
+    return isEnabled();
+}
+
+Return<uint32_t> PowerShare::getMinBattery() {
+    return 0;
+}
+
+Return<uint32_t> PowerShare::setMinBattery(uint32_t) {
+    return getMinBattery();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace powershare
+}  // namespace lineage
+}  // namespace vendor

powershare/PowerShare.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+#ifndef VENDOR_LINEAGE_POWERSHARE_V1_0_POWERSHARE_H
+#define VENDOR_LINEAGE_POWERSHARE_V1_0_POWERSHARE_H
+
+#include <vendor/lineage/powershare/1.0/IPowerShare.h>
+
+namespace vendor {
+namespace lineage {
+namespace powershare {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+class PowerShare : public IPowerShare {
+  public:
+    Return<bool> isEnabled() override;
+    Return<bool> setEnabled(bool enable) override;
+    Return<uint32_t> getMinBattery() override;
+    Return<uint32_t> setMinBattery(uint32_t minBattery) override;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace powershare
+}  // namespace lineage
+}  // namespace vendor
+
+#endif  // VENDOR_LINEAGE_POWERSHARE_V1_0_POWERSHARE_H

powershare/lineage.powershare@1.0-service.oneplus_kona.rc

@@ -0,0 +1,4 @@
+service powershare-hal-1-0 /system/bin/hw/lineage.powershare@1.0-service.oneplus_kona
+    class hal
+    user system
+    group system

powershare/service.cpp

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2020 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 "lineage.powershare@1.0-service.oneplus_kona"
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include "PowerShare.h"
+
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+
+using vendor::lineage::powershare::V1_0::IPowerShare;
+using vendor::lineage::powershare::V1_0::implementation::PowerShare;
+
+using android::OK;
+using android::status_t;
+
+int main() {
+    android::sp<IPowerShare> service = new PowerShare();
+
+    configureRpcThreadpool(1, true);
+
+    status_t status = service->registerAsService();
+    if (status != OK) {
+        LOG(ERROR) << "Cannot register PowerShare HAL service.";
+        return 1;
+    }
+
+    LOG(INFO) << "PowerShare HAL service ready.";
+
+    joinRpcThreadpool();
+
+    LOG(ERROR) << "PowerShare HAL service failed to join thread pool.";
+    return 1;
+}

sepolicy/private/file.te

@@ -4,6 +4,7 @@ type op2_file, file_type;
 
 # proc
 type proc_touchpanel, fs_type, proc_type;
+type procfs_oem_wireless, fs_type, proc_type;
 
 # sysfs
 type sysfs_battery_supply, sysfs_type, fs_type;

sepolicy/private/file_contexts

@@ -13,6 +13,7 @@
 /(product|system/product)/vendor_overlay/[0-9]+/bin/hw/android\.hardware\.power@1\.2-service    u:object_r:hal_power_default_exec:s0
 /system/bin/hw/lineage\.biometrics\.fingerprint\.inscreen@1.0-service\.oneplus_kona    u:object_r:hal_fod_kona_exec:s0
 /system/bin/hw/lineage\.livedisplay@2\.0-service\.oneplus_kona    u:object_r:hal_livedisplay_kona_exec:s0
+/system/bin/hw/lineage\.powershare@1\.0-service\.oneplus_kona    u:object_r:hal_powershare_kona_exec:s0
 /system/bin/hw/lineage\.touch@1\.0-service\.oneplus_kona    u:object_r:hal_touch_kona_exec:s0
 
 # DASH

sepolicy/private/hal_powershare_kona.te

@@ -0,0 +1,9 @@
+type hal_powershare_kona, coredomain, domain;
+hal_server_domain(hal_powershare_kona, hal_lineage_powershare)
+
+type hal_powershare_kona_exec, system_file_type, exec_type, file_type;
+init_daemon_domain(hal_powershare_kona)
+
+# Allow access to wireless rx enable nodes
+allow hal_powershare_kona procfs_oem_wireless:dir search;
+allow hal_powershare_kona procfs_oem_wireless:file rw_file_perms;