Files
android_device_google_conte…/sensorhal/sensors.cpp
Meng-hsuan Chung 49f32a52b8 sensorhal: enable 400Hz accel/gyro
bug: 27687515
Change-Id: I4d6714105f70d0e277fcd8e8849bda0666b47ede
2016-03-24 11:50:00 -07:00

750 lines
28 KiB
C++

/*
* Copyright (C) 2015 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.
*/
#define LOG_TAG "sensors"
// #defined LOG_NDEBUG 1
#include <utils/Log.h>
#include "sensors.h"
#include "hubconnection.h"
#include <errno.h>
#include <math.h>
#include <media/stagefright/foundation/ADebug.h>
#include <string.h>
using namespace android;
static const int kVersion = 1;
static const float kMinSampleRateHzAccel = 6.250f;
static const float kMaxSampleRateHzAccel = 400.0f;
static const float kMinSampleRateHzGyro = 6.250f;
static const float kMaxSampleRateHzGyro = 400.0f;
static const float kMinSampleRateHzMag = 3.125f;
static const float kMaxSampleRateHzMag = 50.0f;
static const float kMinSampleRateHzPolling = 0.1f;
static const float kMaxSampleRateHzPolling = 25.0f;
static const float kMinSampleRateHzPressure = 0.1f;
static const float kMaxSampleRateHzPressure = 10.0f;
static const float kMinSampleRateHzTemperature = kMinSampleRateHzPolling;
static const float kMaxSampleRateHzTemperature = kMaxSampleRateHzPolling;
static const float kMinSampleRateHzProximity = kMinSampleRateHzPolling;
static const float kMaxSampleRateHzProximity = 5.0;
static const float kMinSampleRateHzLight = kMinSampleRateHzPolling;
static const float kMaxSampleRateHzLight = 5.0;
static const float kMinSampleRateHzOrientation = 12.5f;
static const float kMaxSampleRateHzOrientation = 200.0f;
static const int kMaxOneAxisEventCount = 9000;
static const int kMaxThreeAxisEventCount = 4500;
static const char SENSOR_STRING_TYPE_INTERNAL_TEMPERATURE[] =
"com.google.sensor.internal_temperature";
static const char SENSOR_STRING_TYPE_SYNC[] =
"com.google.sensor.sync";
static const char SENSOR_STRING_TYPE_DOUBLE_TWIST[] =
"com.google.sensor.double_twist";
static const char SENSOR_STRING_TYPE_DOUBLE_TAP[] =
"com.google.sensor.double_tap";
static struct sensor_t kSensorList[] = {
{
// MUST BE THE FIRST ENTRY! The name/vendor will be patched once we
// get feedback from the hub on which part is installed.
"Unknown Proximity Sensor",
"Unknown",
kVersion,
COMMS_SENSOR_PROXIMITY,
SENSOR_TYPE_PROXIMITY,
5.0f, // maxRange (cm)
1.0f, // resolution (cm)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzProximity), // minDelay
300, // XXX fifoReservedEventCount
kMaxOneAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_PROXIMITY,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzProximity), // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_ON_CHANGE_MODE,
{ NULL, NULL }
},
{
"Unknown Light Sensor",
"Unknown",
kVersion,
COMMS_SENSOR_LIGHT,
SENSOR_TYPE_LIGHT,
43000.0f, // maxRange (lx)
10.0f, // XXX resolution (lx)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzLight), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_LIGHT,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzLight), // maxDelay
SENSOR_FLAG_ON_CHANGE_MODE,
{ NULL, NULL }
},
{
"BMI160 accelerometer",
"Bosch",
kVersion,
COMMS_SENSOR_ACCEL,
SENSOR_TYPE_ACCELEROMETER,
GRAVITY_EARTH * 8.0f, // maxRange
GRAVITY_EARTH * 8.0f / 32768.0f, // resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzAccel), // minDelay
3000, // XXX fifoReservedEventCount
kMaxThreeAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_ACCELEROMETER,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzAccel), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMI160 gyroscope",
"Bosch",
kVersion,
COMMS_SENSOR_GYRO,
SENSOR_TYPE_GYROSCOPE,
2000.0f * M_PI / 180.0f, // maxRange
2000.0f * M_PI / (180.0f * 32768.0f), // resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzGyro), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GYROSCOPE,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzGyro), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMI160 gyroscope (uncalibrated)",
"Bosch",
kVersion,
COMMS_SENSOR_GYRO_UNCALIBRATED,
SENSOR_TYPE_GYROSCOPE_UNCALIBRATED,
2000.0f * M_PI / 180.0f, // maxRange
2000.0f * M_PI / (180.0f * 32768.0f), // resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzGyro), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GYROSCOPE_UNCALIBRATED,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzGyro), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMM150 magnetometer",
"Bosch",
kVersion,
COMMS_SENSOR_MAG,
SENSOR_TYPE_MAGNETIC_FIELD,
1300.0f, // XXX maxRange
0.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzMag), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_MAGNETIC_FIELD,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzMag), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMM150 magnetometer (uncalibrated)",
"Bosch",
kVersion,
COMMS_SENSOR_MAG_UNCALIBRATED,
SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED,
1300.0f, // XXX maxRange
0.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzMag), // minDelay
600, // XXX fifoReservedEventCount
kMaxThreeAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_MAGNETIC_FIELD_UNCALIBRATED,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzMag), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMP280 pressure",
"Bosch",
kVersion,
COMMS_SENSOR_PRESSURE,
SENSOR_TYPE_PRESSURE,
1100.0f, // maxRange (hPa)
0.005f, // resolution (hPa)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzPressure), // minDelay
300, // XXX fifoReservedEventCount
kMaxOneAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_PRESSURE,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzPressure), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMP280 temperature",
"Bosch",
kVersion,
COMMS_SENSOR_TEMPERATURE,
SENSOR_TYPE_INTERNAL_TEMPERATURE,
85.0f, // maxRange (degC)
0.01, // resolution (degC)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzTemperature), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_INTERNAL_TEMPERATURE,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzTemperature), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Orientation",
"Google",
kVersion,
COMMS_SENSOR_ORIENTATION,
SENSOR_TYPE_ORIENTATION,
360.0f, // maxRange (deg)
1.0f, // XXX resolution (deg)
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_ORIENTATION,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"BMI160 Step detector",
"Bosch",
kVersion,
COMMS_SENSOR_STEP_DETECTOR,
SENSOR_TYPE_STEP_DETECTOR,
1.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
0, // minDelay
100, // XXX fifoReservedEventCount
kMaxOneAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_STEP_DETECTOR,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"BMI160 Step counter",
"Bosch",
kVersion,
COMMS_SENSOR_STEP_COUNTER,
SENSOR_TYPE_STEP_COUNTER,
1.0f, // XXX maxRange
1.0f, // resolution
0.0f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_STEP_COUNTER,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_ON_CHANGE_MODE,
{ NULL, NULL }
},
{
"Significant motion",
"Google",
kVersion,
COMMS_SENSOR_SIGNIFICANT_MOTION,
SENSOR_TYPE_SIGNIFICANT_MOTION,
1.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
-1, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_SIGNIFICANT_MOTION,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_ONE_SHOT_MODE,
{ NULL, NULL }
},
{
"Gravity",
"Google",
kVersion,
COMMS_SENSOR_GRAVITY,
SENSOR_TYPE_GRAVITY,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GRAVITY,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Linear Acceleration",
"Google",
kVersion,
COMMS_SENSOR_LINEAR_ACCEL,
SENSOR_TYPE_LINEAR_ACCELERATION,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_LINEAR_ACCELERATION,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Rotation Vector",
"Google",
kVersion,
COMMS_SENSOR_ROTATION_VECTOR,
SENSOR_TYPE_ROTATION_VECTOR,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_ROTATION_VECTOR,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Geomagnetic Rotation Vector",
"Google",
kVersion,
COMMS_SENSOR_GEO_MAG,
SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GEOMAGNETIC_ROTATION_VECTOR,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Game Rotation Vector",
"Google",
kVersion,
COMMS_SENSOR_GAME_ROTATION_VECTOR,
SENSOR_TYPE_GAME_ROTATION_VECTOR,
1000.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
(int32_t)(1.0E6f / kMaxSampleRateHzOrientation), // minDelay
300, // XXX fifoReservedEventCount
kMaxThreeAxisEventCount, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_GAME_ROTATION_VECTOR,
"", // requiredPermission
(long)(1.0E6f / kMinSampleRateHzOrientation), // maxDelay
SENSOR_FLAG_CONTINUOUS_MODE,
{ NULL, NULL }
},
{
"Tilt Detector",
"Google",
kVersion,
COMMS_SENSOR_TILT,
SENSOR_TYPE_TILT_DETECTOR,
1.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_TILT_DETECTOR,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"Pickup Gesture",
"Google",
kVersion,
COMMS_SENSOR_GESTURE,
SENSOR_TYPE_PICK_UP_GESTURE,
1.0f, // maxRange
1.0f, // XXX resolution
0.0f, // XXX power
-1, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_PICK_UP_GESTURE,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_ONE_SHOT_MODE,
{ NULL, NULL }
},
{
"Sensors Sync",
"Google",
kVersion,
COMMS_SENSOR_SYNC,
SENSOR_TYPE_SYNC,
1.0f, // maxRange
1.0f, // XXX resolution
0.1f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_SYNC,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"Double Twist",
"Google",
kVersion,
COMMS_SENSOR_DOUBLE_TWIST,
SENSOR_TYPE_DOUBLE_TWIST,
1.0f, // maxRange
1.0f, // XXX resolution
0.1f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_DOUBLE_TWIST,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"Double Tap",
"Google",
kVersion,
COMMS_SENSOR_DOUBLE_TAP,
SENSOR_TYPE_DOUBLE_TAP,
1.0f, // maxRange
1.0f, // XXX resolution
0.1f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_DOUBLE_TAP,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_SPECIAL_REPORTING_MODE,
{ NULL, NULL }
},
{
"Device Orientation",
"Google",
kVersion,
COMMS_SENSOR_WINDOW_ORIENTATION,
SENSOR_TYPE_DEVICE_ORIENTATION,
3.0f, // maxRange
1.0f, // XXX resolution
0.1f, // XXX power
0, // minDelay
0, // XXX fifoReservedEventCount
0, // XXX fifoMaxEventCount
SENSOR_STRING_TYPE_DEVICE_ORIENTATION,
"", // requiredPermission
0, // maxDelay
SENSOR_FLAG_ON_CHANGE_MODE,
{ NULL, NULL }
},
};
////////////////////////////////////////////////////////////////////////////////
SensorContext::SensorContext(const struct hw_module_t *module)
: mHubConnection(HubConnection::getInstance()), mHubAlive(true) {
memset(&device, 0, sizeof(device));
device.common.tag = HARDWARE_DEVICE_TAG;
device.common.version = SENSORS_DEVICE_API_VERSION_1_3;
device.common.module = const_cast<hw_module_t *>(module);
device.common.close = CloseWrapper;
device.activate = ActivateWrapper;
device.setDelay = SetDelayWrapper;
device.poll = PollWrapper;
device.batch = BatchWrapper;
device.flush = FlushWrapper;
if (mHubConnection->initCheck() != (status_t)OK) {
mHubAlive = false;
} else {
if (mHubConnection->getAliveCheck() != (status_t)OK) {
mHubAlive = false;
} else {
HubConnection::ProximitySensorType type;
mHubConnection->getProximitySensorType(&type);
if (type == HubConnection::PROXIMITY_ROHM) {
kSensorList[0].name = "RPR0521 proximity";
kSensorList[0].vendor = "Rohm";
kSensorList[1].name = "RPR0521 light";
kSensorList[1].vendor = "Rohm";
} else if (type == HubConnection::PROXIMITY_AMS) {
kSensorList[0].name = "TMD27723 proximity";
kSensorList[0].vendor = "AMS";
kSensorList[1].name = "TMD27723 light";
kSensorList[1].vendor = "AMS";
kSensorList[1].maxRange = 10000;
}
}
}
}
SensorContext::~SensorContext() {
}
int SensorContext::close() {
ALOGI("close");
delete this;
return 0;
}
int SensorContext::activate(int handle, int enabled) {
ALOGI("activate");
mHubConnection->queueActivate(handle, enabled);
return 0;
}
int SensorContext::setDelay(int handle, int64_t delayNs) {
ALOGI("setDelay");
// clamp sample rate based on minDelay and maxDelay defined in kSensorList
int64_t delayNsClamped = delayNs;
int num_sensors = sizeof(kSensorList) / sizeof(sensor_t);
for (int i = 0; i < num_sensors; i++) {
sensor_t sensor = kSensorList[i];
if (sensor.handle != handle) {
continue;
}
if ((sensor.flags & REPORTING_MODE_MASK) == SENSOR_FLAG_CONTINUOUS_MODE) {
if ((delayNs/1000) < sensor.minDelay) {
delayNsClamped = sensor.minDelay * 1000;
} else if ((delayNs/1000) > sensor.maxDelay) {
delayNsClamped = sensor.maxDelay * 1000;
}
}
break;
}
mHubConnection->queueSetDelay(handle, delayNsClamped);
return 0;
}
int SensorContext::poll(sensors_event_t *data, int count) {
ALOGV("poll");
ssize_t n = mHubConnection->read(data, count);
if (n < 0) {
return -1;
}
return n;
}
int SensorContext::batch(
int handle,
int flags,
int64_t sampling_period_ns,
int64_t max_report_latency_ns) {
ALOGI("batch");
// clamp sample rate based on minDelay and maxDelay defined in kSensorList
int64_t sampling_period_ns_clamped = sampling_period_ns;
int num_sensors = sizeof(kSensorList) / sizeof(sensor_t);
for (int i = 0; i < num_sensors; i++) {
sensor_t sensor = kSensorList[i];
if (sensor.handle != handle) {
continue;
}
if ((sensor.flags & REPORTING_MODE_MASK) == SENSOR_FLAG_CONTINUOUS_MODE) {
if ((sampling_period_ns/1000) < sensor.minDelay) {
sampling_period_ns_clamped = sensor.minDelay * 1000;
} else if ((sampling_period_ns/1000) > sensor.maxDelay) {
sampling_period_ns_clamped = sensor.maxDelay * 1000;
}
}
break;
}
mHubConnection->queueBatch(
handle, flags, sampling_period_ns_clamped, max_report_latency_ns);
return 0;
}
int SensorContext::flush(int handle) {
ALOGI("flush");
mHubConnection->queueFlush(handle);
return 0;
}
// static
int SensorContext::CloseWrapper(struct hw_device_t *dev) {
return reinterpret_cast<SensorContext *>(dev)->close();
}
// static
int SensorContext::ActivateWrapper(
struct sensors_poll_device_t *dev, int handle, int enabled) {
return reinterpret_cast<SensorContext *>(dev)->activate(handle, enabled);
}
// static
int SensorContext::SetDelayWrapper(
struct sensors_poll_device_t *dev, int handle, int64_t delayNs) {
return reinterpret_cast<SensorContext *>(dev)->setDelay(handle, delayNs);
}
// static
int SensorContext::PollWrapper(
struct sensors_poll_device_t *dev, sensors_event_t *data, int count) {
return reinterpret_cast<SensorContext *>(dev)->poll(data, count);
}
// static
int SensorContext::BatchWrapper(
struct sensors_poll_device_1 *dev,
int handle,
int flags,
int64_t sampling_period_ns,
int64_t max_report_latency_ns) {
return reinterpret_cast<SensorContext *>(dev)->batch(
handle, flags, sampling_period_ns, max_report_latency_ns);
}
// static
int SensorContext::FlushWrapper(struct sensors_poll_device_1 *dev, int handle) {
return reinterpret_cast<SensorContext *>(dev)->flush(handle);
}
bool SensorContext::getHubAlive() {
return mHubAlive;
}
////////////////////////////////////////////////////////////////////////////////
static bool gHubAlive;
static int open_sensors(
const struct hw_module_t *module,
const char *,
struct hw_device_t **dev) {
ALOGI("open_sensors");
SensorContext *ctx = new SensorContext(module);
gHubAlive = ctx->getHubAlive();
*dev = &ctx->device.common;
return 0;
}
static struct hw_module_methods_t sensors_module_methods = {
.open = open_sensors
};
static int get_sensors_list(
struct sensors_module_t *,
struct sensor_t const **list) {
ALOGI("get_sensors_list");
if (gHubAlive) {
*list = kSensorList;
return sizeof(kSensorList) / sizeof(kSensorList[0]);
} else {
*list = {};
return 0;
}
}
static int set_operation_mode(unsigned int mode) {
ALOGI("set_operation_mode");
return (mode) ? -EINVAL : 0;
}
struct sensors_module_t HAL_MODULE_INFO_SYM = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.version_major = 1,
.version_minor = 0,
.id = SENSORS_HARDWARE_MODULE_ID,
.name = "Google Sensor module",
.author = "Google",
.methods = &sensors_module_methods,
.dso = NULL,
.reserved = {0},
},
.get_sensors_list = get_sensors_list,
.set_operation_mode = set_operation_mode,
};