sm6150-common: Implement torch light control

[RealJohnGalt:] modify for oneplus usage, add toggle switch
[cyberknight777]: Adapt nodes and SEPolicy for sunny

Change-Id: I8ff5d814-d58d-4ed1-9b42-b025415a5c85
Signed-off-by: Dhina17 <dhinalogu@gmail.com>
Signed-off-by: therealmharc <therealmharc@gmail.com>

BoardConfigCommon.mk

@@ -51,6 +51,7 @@ MALLOC_SVELTE := true
 MALLOC_SVELTE_FOR_LIBC32 := true
 TARGET_CAMERA_OVERRIDE_FORMAT_FROM_RESERVED := true
 TARGET_CAMERA_PACKAGE_NAME := com.android.camera
+TARGET_CAMERA_SERVICE_EXT_LIB := //$(COMMON_PATH):libcameraservice_extension.sm6150
 
 # Filesystem
 TARGET_FS_CONFIG_GEN := $(COMMON_PATH)/configs/config.fs

camera/Android.bp

@@ -0,0 +1,22 @@
+//
+// 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.
+
+cc_library_static {
+    name: "libcameraservice_extension.sm6150",
+    srcs: ["CameraProviderExtension.cpp"],
+    include_dirs: [
+        "frameworks/av/services/camera/libcameraservice/common"
+    ],
+}

camera/CameraProviderExtension.cpp

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2024 LibreMobileOS Foundation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "CameraProviderExtension.h"
+
+#include <fstream>
+
+#define TORCH_BRIGHTNESS "brightness"
+#define TORCH_MAX_BRIGHTNESS "max_brightness"
+#define TOGGLE_SWITCH "/sys/devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:switch_2/brightness"
+
+static std::string kTorchLedPaths[] = {
+        "/sys/devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:torch_0",
+        "/sys/devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:torch_1",
+};
+
+/**
+ * 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;
+}
+
+/**
+ * Read value from the path and close file.
+ */
+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;
+}
+
+bool supportsTorchStrengthControlExt() {
+    return true;
+}
+
+int32_t getTorchDefaultStrengthLevelExt() {
+    return 7;
+}
+
+int32_t getTorchMaxStrengthLevelExt() {
+    // In our device, both LEDs has same maximum value
+    // so get from one.
+    auto node = kTorchLedPaths[0] + "/" + TORCH_MAX_BRIGHTNESS;
+    return get(node, 0);
+}
+
+int32_t getTorchStrengthLevelExt() {
+    // We write same value in the both LEDs,
+    // so get from one.
+    auto node = kTorchLedPaths[0] + "/" + TORCH_BRIGHTNESS;
+    return get(node, 0);
+}
+
+void setTorchStrengthLevelExt(int32_t torchStrength) {
+    set(TOGGLE_SWITCH, 0);
+    for (auto& path : kTorchLedPaths) {
+        auto node = path + "/" + TORCH_BRIGHTNESS;
+        set(node, torchStrength);
+    }
+    if (torchStrength > 0)
+        set(TOGGLE_SWITCH, 255);
+}

rootdir/etc/ueventd.rc

@@ -185,3 +185,8 @@ firmware_directories /vendor/firmware_mnt/image/
 
 # Charger
 /sys/class/power_supply/battery input_suspend   0660    system  system
+
+# Torch control
+/sys/devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:switch_2 brightness 0660 cameraserver camera
+/sys/devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:torch_0 brightness 0660 cameraserver camera
+/sys/devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:torch_1 brightness 0660 cameraserver camera

sepolicy/vendor/cameraserver.te

@@ -1 +1,2 @@
 hal_client_domain(cameraserver, hal_motor)
+allow cameraserver sysfs_torch:file rw_file_perms;

sepolicy/vendor/file.te

@@ -1,5 +1,8 @@
 # Data files
 type per_boot_file, file_type, data_file_type, core_data_file_type;
 
+# Torch
+type sysfs_torch, fs_type, sysfs_type;
+
 # Touchpanel
 type sysfs_touchpanel, fs_type, sysfs_type;

sepolicy/vendor/genfs_contexts

@@ -72,5 +72,15 @@ genfscon sysfs /devices/platform/soc/soc:maxim_ds28e16/power_supply/batt_verify/
 genfscon sysfs /devices/platform/soc/soc:fingerprint_fpc/wakeup                                                                                                                             u:object_r:sysfs_wakeup:s0
 genfscon sysfs /devices/virtual/input/input1/wakeup                                                                                                                                         u:object_r:sysfs_wakeup:s0
 
+# Torch
+genfscon sysfs /devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/flashlight/brightness          u:object_r:sysfs_leds:s0
+genfscon sysfs /devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:torch_0/brightness         u:object_r:sysfs_torch:s0
+genfscon sysfs /devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:torch_0/max_brightness     u:object_r:sysfs_torch:s0
+genfscon sysfs /devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:torch_1/brightness         u:object_r:sysfs_torch:s0
+genfscon sysfs /devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:torch_1/max_brightness     u:object_r:sysfs_torch:s0
+genfscon sysfs /devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:switch_0/brightness        u:object_r:sysfs_leds:s0
+genfscon sysfs /devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:switch_1/brightness        u:object_r:sysfs_leds:s0
+genfscon sysfs /devices/platform/soc/c440000.qcom,spmi/spmi-0/spmi0-05/c440000.qcom,spmi:qcom,pm6150l@5:qcom,leds@d300/leds/led:switch_2/brightness        u:object_r:sysfs_torch:s0
+
 # Touchpanel
 genfscon sysfs /devices/virtual/touch/touch_dev/        u:object_r:sysfs_touchpanel:s0