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Commit 9f47a681 authored by Ricardo Cerqueira's avatar Ricardo Cerqueira
Browse files

sensors: Add dummy light sensor for p990/p999 

This is necessary for the rest of userspace to recognize its existence
and toggle it for auto-brightness. It doesn't generate actual light
values, though; all backlight adjustments are made in-kernel.

Change-Id: I0e546b4740720bd34d1e1d85a96b295fcc697106
parent 5d4bc4e0

services/java/com/android/server/PowerManagerService.java

+1 −0
Original line number Diff line number Diff line
@@ -2803,6 +2803,7 @@ class PowerManagerService extends IPowerManager.Stub 
        boolean enabled = (mode == SCREEN_BRIGHTNESS_MODE_AUTOMATIC);

        if (mUseSoftwareAutoBrightness && mAutoBrightessEnabled != enabled) {

            mAutoBrightessEnabled = enabled;

            enableLightSensor(mAutoBrightessEnabled);

            if (isScreenOn()) {

                // force recompute of backlight values

                if (mLightSensorValue >= 0) {

services/sensorservice/Android.mk

+4 −0
Original line number Diff line number Diff line
@@ -24,6 +24,10 @@ ifeq ($(TARGET_HAS_FOXCONN_SENSORS),true) 
    LOCAL_CFLAGS += -DFOXCONN_SENSORS

endif



ifneq ($(filter p990 p999, $(TARGET_BOOTLOADER_BOARD_NAME)),)

    LOCAL_CFLAGS += -DUSE_LGE_ALS_DUMMY

endif



# need "-lrt" on Linux simulator to pick up clock_gettime

ifeq ($(TARGET_SIMULATOR),true)

	ifeq ($(HOST_OS),linux)

services/sensorservice/SensorDevice.cpp

+69 −6
Original line number Diff line number Diff line
@@ -30,6 +30,10 @@ 


#include "SensorDevice.h"



#ifdef USE_LGE_ALS_DUMMY

#include <fcntl.h>

#endif



namespace android {

// ---------------------------------------------------------------------------

class BatteryService : public Singleton<BatteryService> {
@@ -97,6 +101,27 @@ ANDROID_SINGLETON_STATIC_INSTANCE(BatteryService) 


ANDROID_SINGLETON_STATIC_INSTANCE(SensorDevice)



#ifdef USE_LGE_ALS_DUMMY

static ssize_t addDummyLGESensor(sensor_t const **list, ssize_t count) {

    struct sensor_t dummy_light =     {

                  name            : "Dummy LGE-Star light sensor",

                  vendor          : "CyanogenMod",

                  version         : 1,

                  handle          : SENSOR_TYPE_LIGHT,

                  type            : SENSOR_TYPE_LIGHT,

                  maxRange        : 20,

                  resolution      : 0.1,

                  power           : 20,

    };

    void * new_list = malloc((count+1)*sizeof(sensor_t));

    new_list = memcpy(new_list, *list, count*sizeof(sensor_t));

    ((sensor_t *)new_list)[count] = dummy_light;

    *list = (sensor_t const *)new_list;

    count++;

    return count;

}

#endif



SensorDevice::SensorDevice()

    :  mSensorDevice(0),

       mOldSensorsEnabled(0),
@@ -139,15 +164,23 @@ SensorDevice::SensorDevice() 
        if (mSensorDevice || mOldSensorsCompatMode) {

            sensor_t const* list;

            ssize_t count = mSensorModule->get_sensors_list(mSensorModule, &list);

            mActivationCount.setCapacity(count);

            Info model;

            for (size_t i=0 ; i<size_t(count) ; i++) {

                mActivationCount.add(list[i].handle, model);



#ifdef USE_LGE_ALS_DUMMY

            count = addDummyLGESensor(&list, count);

#endif



            if (mOldSensorsCompatMode) {

                mOldSensorsList = list;

                mOldSensorsCount = count;

                mSensorDataDevice->data_open(mSensorDataDevice,

                            mSensorControlDevice->open_data_source(mSensorControlDevice));

            }



            mActivationCount.setCapacity(count);

            Info model;

            for (size_t i=0 ; i<size_t(count) ; i++) {

                mActivationCount.add(list[i].handle, model);

                if (mOldSensorsCompatMode) {

                    mSensorControlDevice->activate(mSensorControlDevice, list[i].handle, 0);

                } else {

                    mSensorDevice->activate(mSensorDevice, list[i].handle, 0);
@@ -178,6 +211,10 @@ void SensorDevice::dump(String8& result, char* buffer, size_t SIZE) 
ssize_t SensorDevice::getSensorList(sensor_t const** list) {

    if (!mSensorModule) return NO_INIT;

    ssize_t count = mSensorModule->get_sensors_list(mSensorModule, list);



#ifdef USE_LGE_ALS_DUMMY

    return addDummyLGESensor(list, count);

#endif

    return count;

}
@@ -258,6 +295,32 @@ status_t SensorDevice::activate(void* ident, int handle, int enabled) 
    status_t err(NO_ERROR);

    bool actuateHardware = false;



#ifdef USE_LGE_ALS_DUMMY



    if (handle == SENSOR_TYPE_LIGHT) {

        int nwr, ret, fd;

        char value[2];





        fd = open("/sys/devices/platform/star_aat2870.0/lsensor_onoff", O_RDWR);

        if(fd < 0)

            return -ENODEV;



        nwr = sprintf(value, "%s\n", enabled ? "1" : "0");

        write(fd, value, nwr);

        close(fd);

        fd = open("/sys/devices/platform/star_aat2870.0/alc", O_RDWR);

        if(fd < 0)

            return -ENODEV;



        nwr = sprintf(value, "%s\n", enabled ? "2" : "0");

        write(fd, value, nwr);

        close(fd);



        return 0;



    }

#endif

    Info& info( mActivationCount.editValueFor(handle) );

    if (enabled) {

        Mutex::Autolock _l(mLock);