MTK平台添加虚拟sensor

一、添加一个新的sensor类型

HUB部分

1、/vendor/mediatek/proprietary/tinysys/freertos/source/middleware/contexthub/contexthub_fw.c

在uint8_t chreTypeToMtkType(uint8_t sensortype)中添加：case SENS_TYPE_PICKUP_TEST:return SENSOR_TYPE_PICKUP_TEST;在uint8_t mtkTypeToChreType(uint8_t sensortype)中添加：case SENSOR_TYPE_PICKUP_TEST:return SENS_TYPE_PICKUP_TEST;

2、contexthub_fw.h

在SAR类型后面添加：
#define SENSOR_TYPE_PICKUP_TEST                 73
并将SENSOR_TYPE_MAX的值加 1

3、/vendor/mediatek/proprietary/hardware/contexthub/firmware/inc/sensType.h

在OIS后添加：
#define SENS_TYPE_PICKUP_TEST     56
并将SENS_TYPE_END定义为 SENS_TYPE_PICKUP_TEST

4、contexthub_fw.c

在static void initSensorReportingInfo(void)中添加：sensorReportingMode[SENSOR_TYPE_PICKUP_TEST] = onChange;sensorAccurancyMode[SENSOR_TYPE_PICKUP_TEST] = SENSOR_STATUS_ACCURACY_HIGH;

Kernel部分

5、/kernel-4.14/drivers/misc/mediatek/sensors-1.0/hwmon/include/hwmsensor.h

在SAR后面添加：
#define SENSOR_TYPE_PICKUP_TEST                        73
并将SENSOR_TYPE_MAX_NUM定义为 SENSOR_TYPE_PICKUP_TEST在ID_SAR之后添加：
#define ID_PICKUP_TEST          (ID_BASE + SENSOR_TYPE_PICKUP_TEST - 1)
并将ID_SENSOR_MAX_HANDLE定义为  ID_PICKUP_TEST

6、/kernel-4.14/drivers/misc/mediatek/sensors-1.0/sensorHub/SCP_nanoHub/SCP_nanoHub.c

在static void SCP_sensorHub_init_sensor_state(void)中添加：
mSensorState[SENSOR_TYPE_PICKUP_TEST].sensorType = SENSOR_TYPE_PICKUP_TEST;
mSensorState[SENSOR_TYPE_PICKUP_TEST].timestamp_filter = false;在sensor_get_data_from_hub方法中添加：case ID_PICKUP_TEST:  data->time_stamp = data_t->time_stamp;  data->tilt_event.state = data_t->tilt_event.state;  break;

7、添加kernel对应的driver文件及配置资源链接

8、/kernel-4.14/drivers/misc/mediatek/sensors-1.0/situation/situation.c

在static int handle_to_index(int handle)中添加：
case ID_PICKUP_TEST:  index = pickup_test;  break;

9、/kernel-4.14/drivers/misc/mediatek/sensors-1.0/situation/situation.h

在enum situation_index_table {中添加：sar,
+    pickup_test, max_situation_support,

10、/device/mediatek/common/kernel-headers/linux/hwmsensor.h

添加对应的宏定义#define SENSOR_STRING_TYPE_SAR "android.sensor.sar"+#define SENSOR_TYPE_PICKUP_TEST 73+#define SENSOR_STRING_TYPE_PICKUP_TEST "android.sensor.pickup_test"#define ID_SAR (ID_BASE + SENSOR_TYPE_SAR - SENSOR_TYPE_DEVICE_PRIVATE_BASE - 1)+#define ID_PICKUP_TEST (ID_BASE + SENSOR_TYPE_PICKUP_TEST - 1)

HAL部分

11、/vendor/mediatek/proprietary/hardware/sensor/sensors-1.0/SensorContext.cpp

在static int handleToDriver(int handle) {中添加：case ID_SAR:
+       case ID_PICKUP_TEST:            return situation;

12、/vendor/mediatek/proprietary/hardware/sensor/sensors-1.0/SensorList.cpp

添加如下定义：
#ifdef CUSTOM_KERNEL_PICKUP_TEST_SENSOR#ifndef PICKUP_TEST        #define PICKUP_TEST                           "PICKUP_TEST"    #endif    #ifndef PICKUP_TEST_VENDER        #define PICKUP_TEST_VENDER                    "MTK"    #endif    #ifndef PICKUP_TEST_VERSION        #define PICKUP_TEST_VERSION                   1    #endif    #ifndef PICKUP_TEST_RANGE        #define PICKUP_TEST_RANGE                     1.0f    #endif    #ifndef PICKUP_TEST_RESOLUTION        #define PICKUP_TEST_RESOLUTION                1.0f    #endif    #ifndef PICKUP_TEST_POWER        #define PICKUP_TEST_POWER                     0    #endif    #ifndef PICKUP_TEST_MINDELAY        #define PICKUP_TEST_MINDELAY                  -1    #endif   #ifndef PICKUP_TEST_FIFO_MAX_COUNT        #define PICKUP_TEST_FIFO_MAX_COUNT            0    #endif    #ifndef PICKUP_TEST_FIFO_RESERVE_COUNT        #define PICKUP_TEST_FIFO_RESERVE_COUNT        0    #endif    #ifndef PICKUP_TEST_MAXDELAY        #define PICKUP_TEST_MAXDELAY                  0    #endif    #ifndef PICKUP_TEST_FLAGS        #define PICKUP_TEST_FLAGS     SENSOR_FLAG_ONE_SHOT_MODE | SENSOR_FLAG_WAKE_UP    #endif
#endif然后在void SensorList::initSensorList(void) {中添加：
#ifdef CUSTOM_KERNEL_PICKUP_TEST_SENSOR    memset(&sensor, 0, sizeof(struct sensor_t));    sensor.name = PICKUP_TEST;    sensor.vendor = PICKUP_TEST_VENDER;    sensor.version = PICKUP_TEST_VERSION;    sensor.handle = ID_PICKUP_TEST + ID_OFFSET;    sensor.type = SENSOR_TYPE_PICKUP_TEST;    sensor.maxRange = PICKUP_TEST_RANGE;    sensor.resolution = PICKUP_TEST_RESOLUTION;    sensor.power = PICKUP_TEST_POWER;    sensor.minDelay = PICKUP_TEST_MINDELAY;    sensor.fifoReservedEventCount = PICKUP_TEST_FIFO_RESERVE_COUNT;    sensor.fifoMaxEventCount = PICKUP_TEST_FIFO_MAX_COUNT;    sensor.stringType = SENSOR_STRING_TYPE_PICKUP_TEST;    sensor.maxDelay = PICKUP_TEST_MAXDELAY;    sensor.flags = PICKUP_TEST_FLAGS;    mSensorList.push_back(sensor);
#endif针对CUSTOM_KERNEL_PICKUP_TEST_SENSOR这个宏，需要在如下文件中添加：
mt6769/h3/base/device/mediateksample/k69v1_64/ProjectConfig.mk
mt6769/h3/h38fa_hda/device/mediateksample/k69v1_64/ProjectConfig.mk
.../device/mediateksample/k69v1_64/ProjectConfig.mk

13、/vendor/mediatek/proprietary/hardware/sensor/sensors-1.0/Situation.cpp

在int SituationSensor::HandleToIndex(int handle) {中添加：case ID_PICKUP_TEST:        index = pickup_test;        break;

14、/vendor/mediatek/proprietary/hardware/sensor/sensors-1.0/Situation.h

在class SituationSensor : public SensorBase {中添加sar,
+   pickup_test,        max_situation,

二、添加对应的实现文件

HUB部分

1、vendor/mediatek/proprietary/tinysys/freertos/source/middleware/contexthub/VIRT_Driver

在如上目录中添加对应的虚拟sensor驱动文件：pickup_test.c

2、vendor/mediatek/proprietary/tinysys/freertos/source/project/CM4_A/XXX/platform/feature_config/chre.mk添加如下编译配置。

######## Lift and putdown #######
#ifeq ($(CFG_PICKUP_TEST_SUPPORT),yes)
INCLUDES += -I$(SOURCE_DIR)/middleware/contexthub/algo/wakeup_gesture
INCLUDES += -I$(SOURCE_DIR)/middleware/contexthub/VIRT_Driver
C_FILES  += $(SOURCE_DIR)/middleware/contexthub/VIRT_Driver/pickup_test.c
C_FILES  += $(SOURCE_DIR)/middleware/contexthub/VIRT_Driver/algoDataResample.c
LIBFLAGS += -L$(SOURCE_DIR)/middleware/contexthub/algo/wakeup_gesture -lwakeupgesture
endif

3、vendor/mediatek/proprietary/tinysys/freertos/source/project/CM4_A/XXX/k69v1_64/ProjectConfig.mk中添加宏定义：

CFG_PICKUP_TEST_SUPPORT = yes

kernel部分

4、kernel-4.14/drivers/misc/mediatek/sensors-1.0/situation/pickup_test/目录中添加对应的kernel文件：

Kconfig/Makefile/pickup_test.c/pickup_test.h

5、kernel-4.14/drivers/misc/mediatek/sensors-1.0/situation/目录下的Kconfig和Makefile中添加pickup_test的编译选项：

source "drivers/misc/mediatek/sensors-1.0/situation/pickup_test/Kconfig"obj-$(CONFIG_MTK_PICKUP_TEST_HUB)    += pickup_test/

6、kernel-4.14\arch\arm64\configs中的k69v1_64_debug_defconfig和k69v1_64_defconfig中添加CONFIG_MTK_PICKUP_TEST_HUB宏定义。

CONFIG_MTK_PICKUP_TEST_HUB=y

至此，安装SensorTest1-V0.3.apk后，在列表中就可以看到PICKUP_TEST对应的sensor。

但是发现两个问题：

1、通过log来看，数据是能正常上报的，但是apk中无数据刷新。

2、上报抬起或者放下的事件后，无法disable掉该sensor。

如上两点目前还未找到问题原因，有知道的小伙伴可以留言或者私信我。

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