From 73f753e0ef03a72a133b28b34e84f086dcaf871b Mon Sep 17 00:00:00 2001
From: Cyber Knight <cyberknight755@gmail.com>
Date: Fri, 21 Apr 2023 12:54:34 +0800
Subject: [PATCH] sensors: Implement Single Tap Sensor

- This implements a modernized tap to wake sensor for devices that support it.
- It is guarded by a SOONG variable hence to use it, a maintainer would have to configure it in the BoardConfig.
- An example is as below:

SOONG_CONFIG_NAMESPACES += SENSORS_XIAOMI
SOONG_CONFIG_SENSORS_XIAOMI += USES_SINGLE_TAP_SENSOR
SOONG_CONFIG_SENSORS_XIAOMI_USES_SINGLE_TAP_SENSOR := true

Change-Id: I30d190d0f07ca2517826cc2263153ad39bacc204
Signed-off-by: Cyber Knight <cyberknight755@gmail.com>
---
 sensors/Android.bp        |  5 ++++-
 sensors/Sensor.h          | 16 ++++++++++++++++
 sensors/SensorsSubHal.cpp |  3 +++
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/sensors/Android.bp b/sensors/Android.bp
index 30dc413..5980c83 100644
--- a/sensors/Android.bp
+++ b/sensors/Android.bp
@@ -8,7 +8,7 @@ soong_config_module_type {
     name: "sensors_xiaomi_cc_defaults",
     module_type: "cc_defaults",
     config_namespace: "SENSORS_XIAOMI",
-    bool_variables: ["USES_UDFPS_SENSOR", "USES_DOUBLE_TAP_SENSOR"],
+    bool_variables: ["USES_UDFPS_SENSOR", "USES_DOUBLE_TAP_SENSOR", "USES_SINGLE_TAP_SENSOR"],
     properties: ["cppflags"],
 }
 
@@ -21,6 +21,9 @@ sensors_xiaomi_cc_defaults {
         USES_DOUBLE_TAP_SENSOR: {
             cppflags: ["-DUSES_DOUBLE_TAP_SENSOR"],
         },
+        USES_SINGLE_TAP_SENSOR: {
+            cppflags: ["-DUSES_SINGLE_TAP_SENSOR"],
+        },
     },
 }
 
diff --git a/sensors/Sensor.h b/sensors/Sensor.h
index 8cc0c6f..2c43179 100644
--- a/sensors/Sensor.h
+++ b/sensors/Sensor.h
@@ -152,6 +152,22 @@ class DoubleTapSensor : public SysfsPollingOneShotSensor {
 };
 #endif
 
+#ifdef USES_SINGLE_TAP_SENSOR
+static const char* singleTapPaths[] = {
+  "/sys/devices/platform/soc/884000.i2c/i2c-1/1-0038/single_tap_pressed",
+  NULL
+};
+
+class SingleTapSensor : public SysfsPollingOneShotSensor {
+  public:
+    SingleTapSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+        : SysfsPollingOneShotSensor(
+              sensorHandle, callback, GetPollPath(singleTapPaths),
+              "Single Tap Sensor", "co.aospa.sensor.single_tap",
+              static_cast<SensorType>(static_cast<int32_t>(SensorType::DEVICE_PRIVATE_BASE) + 1)) {}
+};
+#endif
+
 }  // namespace implementation
 }  // namespace subhal
 }  // namespace V2_1
diff --git a/sensors/SensorsSubHal.cpp b/sensors/SensorsSubHal.cpp
index 23e1ac7..7515423 100644
--- a/sensors/SensorsSubHal.cpp
+++ b/sensors/SensorsSubHal.cpp
@@ -39,6 +39,9 @@ SensorsSubHal::SensorsSubHal() : mCallback(nullptr), mNextHandle(1) {
 #ifdef USES_DOUBLE_TAP_SENSOR
     AddSensor<DoubleTapSensor>();
 #endif
+#ifdef USES_SINGLE_TAP_SENSOR
+    AddSensor<SingleTapSensor>();
+#endif
 }
 
 Return<void> SensorsSubHal::getSensorsList_2_1(ISensors::getSensorsList_2_1_cb _hidl_cb) {