power: Add Power interface 1.0

Bug: 31177288
Change-Id: I9c243166515b565ac73e5f47ff86cfacf59d46d3
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>

5 files changed, 542 insertions, 0 deletions

diff --git a/Android.bp b/Android.bp
index 3ab20708ef..417ce5d573 100644
--- a/Android.bp
+++ b/Android.bp
@@ -6,6 +6,7 @@ subdirs = [
     "nfc/1.0",
     "nfc/1.0/default",
     "radio/1.0",
+    "power/1.0",
     "tests/bar/1.0",
     "tests/baz/1.0",
     "tests/expression/1.0",
diff --git a/power/1.0/Android.bp b/power/1.0/Android.bp
new file mode 100644
index 0000000000..9b4d81e7ae
--- /dev/null
+++ b/power/1.0/Android.bp
@@ -0,0 +1,46 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+
+genrule {
+    name: "android.hardware.power@1.0_genc++",
+    tool: "hidl-gen",
+    cmd: "$tool -o $genDir -Lc++ -randroid.hardware:hardware/interfaces android.hardware.power@1.0",
+    srcs: [
+        "types.hal",
+        "IPower.hal",
+    ],
+    out: [
+        "android/hardware/power/1.0/types.cpp",
+        "android/hardware/power/1.0/PowerAll.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hardware.power@1.0_genc++_headers",
+    tool: "hidl-gen",
+    cmd: "$tool -o $genDir -Lc++ -randroid.hardware:hardware/interfaces android.hardware.power@1.0",
+    srcs: [
+        "types.hal",
+        "IPower.hal",
+    ],
+    out: [
+        "android/hardware/power/1.0/types.h",
+        "android/hardware/power/1.0/IPower.h",
+        "android/hardware/power/1.0/IHwPower.h",
+        "android/hardware/power/1.0/BnPower.h",
+        "android/hardware/power/1.0/BpPower.h",
+        "android/hardware/power/1.0/BsPower.h",
+    ],
+}
+
+cc_library_shared {
+    name: "android.hardware.power@1.0",
+    generated_sources: ["android.hardware.power@1.0_genc++"],
+    generated_headers: ["android.hardware.power@1.0_genc++_headers"],
+    export_generated_headers: ["android.hardware.power@1.0_genc++_headers"],
+    shared_libs: [
+        "libhidl",
+        "libhwbinder",
+        "libutils",
+        "libcutils",
+    ],
+}
diff --git a/power/1.0/Android.mk b/power/1.0/Android.mk
new file mode 100644
index 0000000000..5f1260b95f
--- /dev/null
+++ b/power/1.0/Android.mk
@@ -0,0 +1,238 @@
+# This file is autogenerated by hidl-gen. Do not edit manually.
+
+LOCAL_PATH := $(call my-dir)
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.power@1.0-java
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+#
+# Build types.hal (Feature)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/Feature.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.Feature
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (PowerHint)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/PowerHint.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.PowerHint
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (PowerStatePlatformSleepState)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/PowerStatePlatformSleepState.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.PowerStatePlatformSleepState
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (PowerStateVoter)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/PowerStateVoter.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.PowerStateVoter
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (Status)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/Status.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.Status
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build IPower.hal
+#
+GEN := $(intermediates)/android/hardware/power/1.0/IPower.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IPower.hal
+$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/types.hal
+$(GEN): $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::IPower
+
+$(GEN): $(LOCAL_PATH)/IPower.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_JAVA_LIBRARY)
+
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.power@1.0-java-static
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(local-generated-sources-dir)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+#
+# Build types.hal (Feature)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/Feature.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.Feature
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (PowerHint)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/PowerHint.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.PowerHint
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (PowerStatePlatformSleepState)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/PowerStatePlatformSleepState.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.PowerStatePlatformSleepState
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (PowerStateVoter)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/PowerStateVoter.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.PowerStateVoter
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build types.hal (Status)
+#
+GEN := $(intermediates)/android/hardware/power/1.0/Status.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::types.Status
+
+$(GEN): $(LOCAL_PATH)/types.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build IPower.hal
+#
+GEN := $(intermediates)/android/hardware/power/1.0/IPower.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IPower.hal
+$(GEN): PRIVATE_DEPS += $(LOCAL_PATH)/types.hal
+$(GEN): $(LOCAL_PATH)/types.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava -randroid.hardware:hardware/interfaces \
+        android.hardware.power@1.0::IPower
+
+$(GEN): $(LOCAL_PATH)/IPower.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+
+
+include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/power/1.0/IPower.hal b/power/1.0/IPower.hal
new file mode 100644
index 0000000000..6cba42a6ff
--- /dev/null
+++ b/power/1.0/IPower.hal
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2016 The Android Open Source 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.
+ */
+package android.hardware.power@1.0;
+
+/*
+ * Constructor for the interface performs power management setup actions at
+ * runtime startup, such as to set default cpufreq parameters.
+ */
+interface IPower {
+    /*
+     * setInteractive() performs power management actions upon the
+     * system entering interactive state (that is, the system is awake
+     * and ready for interaction, often with UI devices such as
+     * display and touchscreen enabled) or non-interactive state (the
+     * system appears asleep, display usually turned off). The
+     * non-interactive state may be entered after a period of
+     * inactivity in order to conserve battery power during
+     * such inactive periods.
+     *
+     * Typical actions are to turn on or off devices and adjust
+     * cpufreq parameters. This function may also call the
+     * appropriate interfaces to allow the kernel to suspend the
+     * system to low-power sleep state when entering non-interactive
+     * state, and to disallow low-power suspend when the system is in
+     * interactive state. When low-power suspend state is allowed, the
+     * kernel may suspend the system whenever no wakelocks are held.
+     *
+     * For example,
+     * This function can be called to enter non-interactive state after
+     * turning off the screen (if present) and called to enter
+     * interactive state prior to turning on the screen.
+     *
+     * @param interactive is true when the system is transitioning to an
+     * interactive state and false when transitioning to a
+     * non-interactive state.
+     */
+    setInteractive(bool interactive);
+
+    /*
+     * powerHint() is called to pass hints on power requirements which
+     * may result in adjustment of power/performance parameters of the
+     * cpufreq governor and other controls.
+     *
+     * A particular platform may choose to ignore any hint.
+     *
+     * @param hint PowerHint which is passed
+     * @param data contains additional information about the hint
+     * and is described along with the comments for each of the hints.
+     */
+    powerHint(PowerHint hint, int32_t data);
+
+    /*
+     * setFeature() is called to turn on or off a particular feature
+     * depending on the state parameter.
+     *
+     * @param feature Feature which needs to be set
+     * @param activate true/false to enable/disable the feature
+     */
+    setFeature(Feature feature, bool activate);
+
+    /*
+     * Platform-level sleep state stats:
+     * Report cumulative info on the statistics on platform-level sleep states
+     * since boot.
+     *
+     * Higher the index in the returned <states> vector deeper the state is
+     * i.e. lesser steady-state power is consumed by the platform to be
+     * resident in that state.
+     *
+     * @return states of power states the device supports
+     * @return retval SUCCESS on success or FILESYSTEM_ERROR on filesystem
+     * nodes access error.
+     */
+    getPlatformLowPowerStats()
+            generates (vec<PowerStatePlatformSleepState> states, Status retval);
+};
diff --git a/power/1.0/types.hal b/power/1.0/types.hal
new file mode 100644
index 0000000000..c27242ec1b
--- /dev/null
+++ b/power/1.0/types.hal
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2016 The Android Open Source 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.
+ */
+package android.hardware.power@1.0;
+
+/* Power hint identifiers passed to powerHint() */
+enum PowerHint : uint32_t {
+   /*
+    * Foreground app has started or stopped requesting a VSYNC pulse
+    * from SurfaceFlinger. If the app has started requesting VSYNC
+    * then CPU and GPU load is expected soon, and it may be appropriate
+    * to raise speeds of CPU, memory bus, etc. The data parameter is
+    * non-zero to indicate VSYNC pulse is now requested, or zero for
+    * VSYNC pulse no longer requested.
+    */
+    VSYNC = 0x00000001,
+
+
+   /*
+    * User is interacting with the device, for example, touchscreen
+    * events are incoming. CPU and GPU load may be expected soon,
+    * and it may be appropriate to raise speeds of CPU, memory bus,
+    * etc. The data parameter is the estimated length of the interaction
+    * in milliseconds, or 0 if unknown.
+    */
+    INTERACTION = 0x00000002,
+
+
+    /* DO NOT USE VIDEO_ENCODE/_DECODE!  They will be removed in
+     * KLP.
+     */
+    VIDEO_ENCODE = 0x00000003,
+    VIDEO_DECODE = 0x00000004,
+
+   /*
+    * Low power mode is activated or deactivated. Low power mode
+    * is intended to save battery at the cost of performance. The data
+    * parameter is non-zero when low power mode is activated, and zero
+    * when deactivated.
+    */
+    LOW_POWER = 0x00000005,
+
+   /*
+    * Sustained Performance mode is actived or deactivated. Sustained
+    * performance mode is intended to provide a consistent level of
+    * performance for a prolonged amount of time. The data parameter is
+    * non-zero when sustained performance mode is activated, and zero
+    * when deactivated.
+    */
+    SUSTAINED_PERFORMANCE = 0x00000006,
+
+   /*
+    * VR Mode is activated or deactivated. VR mode is intended to
+    * provide minimum guarantee for performance for the amount of time the
+    * device can sustain it. The data parameter is non-zero when the mode
+    * is activated and zero when deactivated.
+    */
+    VR_MODE = 0x00000007,
+
+   /*
+    * This hint indicates that an application has been launched. Can be used
+    * for device specific optimizations during application launch. The data
+    * parameter is non-zero when the application starts to launch and zero when
+    * it has been launched.
+    */
+    LAUNCH = 0x00000008,
+
+   /*
+    * When device enters some special modes, e.g. theater mode in Android
+    * Wear, there is no touch interaction expected between device and user.
+    * Touch controller could be disabled in those modes to save power.
+    * The data parameter is non-zero when touch could be disabled, and zero
+    * when touch needs to be re-enabled.
+    */
+    DISABLE_TOUCH = 0x00000009
+};
+
+enum Feature : uint32_t {
+    /*
+     * Enabling/Disabling this feature will allow/disallow the system
+     * to wake up by tapping the screen twice.
+     */
+    POWER_FEATURE_DOUBLE_TAP_TO_WAKE = 0x00000001
+};
+
+enum Status : uint32_t {
+    SUCCESS = 0,
+    FILESYSTEM_ERROR = 1
+};
+/*
+ * Platform-level sleep state stats:
+ * PowerStateVoter struct is useful for describing the individual voters
+ * when a Platform-level sleep state is chosen by aggregation of votes from
+ * multiple clients/system conditions.
+ *
+ * This helps in attirbuting what in the device is blocking the device from
+ * entering the lowest Platform-level sleep state.
+ */
+struct PowerStateVoter {
+    /*
+     * Name of the voter.
+     */
+     string name;
+
+    /*
+     * Total time in msec the voter voted for the platform sleep state since
+     * boot.
+     */
+     uint64_t totalTimeInMsecVotedForSinceBoot;
+
+    /*
+     * Number of times the voter voted for the platform sleep state since boot.
+     */
+     uint64_t totalNumberOfTimesVotedSinceBoot;
+};
+
+/*
+ * Platform-level sleep state stats:
+ * PowerStatePlatformSleepState represents the Platform-level sleep state
+ * the device is capable of getting into.
+ *
+ * SoCs usually have more than one Platform-level sleep state.
+ */
+struct PowerStatePlatformSleepState {
+    /*
+     * Platform-level Sleep state name.
+     */
+    string name;
+
+    /*
+     * Time spent in msec at this platform-level sleep state since boot.
+     */
+    uint64_t residencyInMsecSinceBoot;
+
+    /*
+     * Total number of times system entered this state.
+     */
+    uint64_t totalTransitions;
+
+    /*
+     * This platform-level sleep state can only be reached during system suspend
+     */
+    bool supportedOnlyInSuspend;
+
+    /*
+     * voters is useful if the Platform-level sleep state
+     * is chosen by aggregation votes from multiple clients/system conditions.
+     * All the voters have to say yes or all the system conditions need to be
+     * met to enter a platform-level sleep state.
+     *
+     * Vector of size zero implies either the info is not available
+     * or the system does not follow a voting mechanism to choose this
+     * Platform-level sleep state.
+     */
+    vec<PowerStateVoter> voters;
+};