49016d6cd7
For the musb to recognized as online, the musbOnline value has to be set. The battery driver sets the online property of the sysfs as "3" when the charger type is USB. The way the current code is, if the value is not 1, musbOnline would be false and the menu to mount the sdcard on the pc would not pop-up. Since the linux driver returns 0 if the cable is not connected, and 3 if the cable is connected, we should set the boolean variable to 0 only if the sysfs value is 0, otherwise we set it to true. Change-Id: I538d8de446e7ea4f620ffcce156a57cf56b5a4e5 Signed-off-by: Axel Haslam <axelhaslam@ti.com>
402 lines
14 KiB
C++
402 lines
14 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "BatteryService"
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#include "JNIHelp.h"
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#include "jni.h"
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#include <utils/Log.h>
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#include <utils/misc.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <dirent.h>
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#if HAVE_ANDROID_OS
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#include <linux/ioctl.h>
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#endif
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namespace android {
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#define POWER_SUPPLY_PATH "/sys/class/power_supply"
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struct FieldIds {
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// members
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jfieldID mAcOnline;
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jfieldID mUsbOnline;
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jfieldID mBatteryStatus;
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jfieldID mBatteryHealth;
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jfieldID mBatteryPresent;
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jfieldID mBatteryLevel;
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jfieldID mBatteryVoltage;
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jfieldID mBatteryTemperature;
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jfieldID mBatteryTechnology;
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};
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static FieldIds gFieldIds;
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struct BatteryManagerConstants {
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jint statusUnknown;
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jint statusCharging;
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jint statusDischarging;
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jint statusNotCharging;
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jint statusFull;
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jint healthUnknown;
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jint healthGood;
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jint healthOverheat;
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jint healthDead;
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jint healthOverVoltage;
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jint healthUnspecifiedFailure;
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jint healthCold;
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};
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static BatteryManagerConstants gConstants;
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struct PowerSupplyPaths {
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char* acOnlinePath;
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char* usbOnlinePath;
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char* batteryStatusPath;
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char* batteryHealthPath;
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char* batteryPresentPath;
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char* batteryCapacityPath;
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char* batteryVoltagePath;
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char* batteryTemperaturePath;
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char* batteryTechnologyPath;
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};
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static PowerSupplyPaths gPaths;
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static int gVoltageDivisor = 1;
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static jint getBatteryStatus(const char* status)
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{
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switch (status[0]) {
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case 'C': return gConstants.statusCharging; // Charging
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case 'D': return gConstants.statusDischarging; // Discharging
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case 'F': return gConstants.statusFull; // Not charging
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case 'N': return gConstants.statusNotCharging; // Full
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case 'U': return gConstants.statusUnknown; // Unknown
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default: {
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LOGW("Unknown battery status '%s'", status);
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return gConstants.statusUnknown;
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}
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}
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}
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static jint getBatteryHealth(const char* status)
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{
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switch (status[0]) {
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case 'C': return gConstants.healthCold; // Cold
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case 'D': return gConstants.healthDead; // Dead
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case 'G': return gConstants.healthGood; // Good
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case 'O': {
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if (strcmp(status, "Overheat") == 0) {
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return gConstants.healthOverheat;
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} else if (strcmp(status, "Over voltage") == 0) {
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return gConstants.healthOverVoltage;
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}
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LOGW("Unknown battery health[1] '%s'", status);
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return gConstants.healthUnknown;
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}
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case 'U': {
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if (strcmp(status, "Unspecified failure") == 0) {
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return gConstants.healthUnspecifiedFailure;
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} else if (strcmp(status, "Unknown") == 0) {
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return gConstants.healthUnknown;
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}
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// fall through
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}
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default: {
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LOGW("Unknown battery health[2] '%s'", status);
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return gConstants.healthUnknown;
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}
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}
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}
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static int readFromFile(const char* path, char* buf, size_t size)
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{
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if (!path)
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return -1;
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int fd = open(path, O_RDONLY, 0);
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if (fd == -1) {
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LOGE("Could not open '%s'", path);
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return -1;
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}
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size_t count = read(fd, buf, size);
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if (count > 0) {
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count = (count < size) ? count : size - 1;
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while (count > 0 && buf[count-1] == '\n') count--;
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buf[count] = '\0';
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} else {
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buf[0] = '\0';
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}
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close(fd);
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return count;
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}
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static void setBooleanField(JNIEnv* env, jobject obj, const char* path, jfieldID fieldID)
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{
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const int SIZE = 16;
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char buf[SIZE];
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jboolean value = false;
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if (readFromFile(path, buf, SIZE) > 0) {
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if (buf[0] != '0') {
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value = true;
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}
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}
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env->SetBooleanField(obj, fieldID, value);
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}
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static void setIntField(JNIEnv* env, jobject obj, const char* path, jfieldID fieldID)
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{
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const int SIZE = 128;
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char buf[SIZE];
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jint value = 0;
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if (readFromFile(path, buf, SIZE) > 0) {
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value = atoi(buf);
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}
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env->SetIntField(obj, fieldID, value);
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}
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static void setVoltageField(JNIEnv* env, jobject obj, const char* path, jfieldID fieldID)
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{
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const int SIZE = 128;
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char buf[SIZE];
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jint value = 0;
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if (readFromFile(path, buf, SIZE) > 0) {
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value = atoi(buf);
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value /= gVoltageDivisor;
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}
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env->SetIntField(obj, fieldID, value);
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}
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static void android_server_BatteryService_update(JNIEnv* env, jobject obj)
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{
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setBooleanField(env, obj, gPaths.acOnlinePath, gFieldIds.mAcOnline);
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setBooleanField(env, obj, gPaths.usbOnlinePath, gFieldIds.mUsbOnline);
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setBooleanField(env, obj, gPaths.batteryPresentPath, gFieldIds.mBatteryPresent);
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setIntField(env, obj, gPaths.batteryCapacityPath, gFieldIds.mBatteryLevel);
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setVoltageField(env, obj, gPaths.batteryVoltagePath, gFieldIds.mBatteryVoltage);
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setIntField(env, obj, gPaths.batteryTemperaturePath, gFieldIds.mBatteryTemperature);
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const int SIZE = 128;
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char buf[SIZE];
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if (readFromFile(gPaths.batteryStatusPath, buf, SIZE) > 0)
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env->SetIntField(obj, gFieldIds.mBatteryStatus, getBatteryStatus(buf));
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else
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env->SetIntField(obj, gFieldIds.mBatteryStatus,
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gConstants.statusUnknown);
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if (readFromFile(gPaths.batteryHealthPath, buf, SIZE) > 0)
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env->SetIntField(obj, gFieldIds.mBatteryHealth, getBatteryHealth(buf));
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if (readFromFile(gPaths.batteryTechnologyPath, buf, SIZE) > 0)
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env->SetObjectField(obj, gFieldIds.mBatteryTechnology, env->NewStringUTF(buf));
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}
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static JNINativeMethod sMethods[] = {
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/* name, signature, funcPtr */
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{"native_update", "()V", (void*)android_server_BatteryService_update},
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};
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int register_android_server_BatteryService(JNIEnv* env)
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{
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char path[PATH_MAX];
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struct dirent* entry;
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DIR* dir = opendir(POWER_SUPPLY_PATH);
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if (dir == NULL) {
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LOGE("Could not open %s\n", POWER_SUPPLY_PATH);
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return -1;
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}
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while ((entry = readdir(dir))) {
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const char* name = entry->d_name;
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// ignore "." and ".."
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if (name[0] == '.' && (name[1] == 0 || (name[1] == '.' && name[2] == 0))) {
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continue;
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}
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char buf[20];
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// Look for "type" file in each subdirectory
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snprintf(path, sizeof(path), "%s/%s/type", POWER_SUPPLY_PATH, name);
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int length = readFromFile(path, buf, sizeof(buf));
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if (length > 0) {
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if (buf[length - 1] == '\n')
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buf[length - 1] = 0;
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if (strcmp(buf, "Mains") == 0) {
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snprintf(path, sizeof(path), "%s/%s/online", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0)
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gPaths.acOnlinePath = strdup(path);
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}
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else if (strcmp(buf, "USB") == 0) {
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snprintf(path, sizeof(path), "%s/%s/online", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0)
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gPaths.usbOnlinePath = strdup(path);
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}
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else if (strcmp(buf, "Battery") == 0) {
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snprintf(path, sizeof(path), "%s/%s/status", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0)
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gPaths.batteryStatusPath = strdup(path);
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snprintf(path, sizeof(path), "%s/%s/health", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0)
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gPaths.batteryHealthPath = strdup(path);
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snprintf(path, sizeof(path), "%s/%s/present", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0)
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gPaths.batteryPresentPath = strdup(path);
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snprintf(path, sizeof(path), "%s/%s/capacity", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0)
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gPaths.batteryCapacityPath = strdup(path);
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snprintf(path, sizeof(path), "%s/%s/voltage_now", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0) {
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gPaths.batteryVoltagePath = strdup(path);
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// voltage_now is in microvolts, not millivolts
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gVoltageDivisor = 1000;
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} else {
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snprintf(path, sizeof(path), "%s/%s/batt_vol", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0)
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gPaths.batteryVoltagePath = strdup(path);
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}
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snprintf(path, sizeof(path), "%s/%s/temp", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0) {
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gPaths.batteryTemperaturePath = strdup(path);
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} else {
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snprintf(path, sizeof(path), "%s/%s/batt_temp", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0)
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gPaths.batteryTemperaturePath = strdup(path);
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}
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snprintf(path, sizeof(path), "%s/%s/technology", POWER_SUPPLY_PATH, name);
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if (access(path, R_OK) == 0)
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gPaths.batteryTechnologyPath = strdup(path);
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}
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}
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}
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closedir(dir);
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if (!gPaths.acOnlinePath)
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LOGE("acOnlinePath not found");
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if (!gPaths.usbOnlinePath)
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LOGE("usbOnlinePath not found");
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if (!gPaths.batteryStatusPath)
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LOGE("batteryStatusPath not found");
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if (!gPaths.batteryHealthPath)
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LOGE("batteryHealthPath not found");
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if (!gPaths.batteryPresentPath)
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LOGE("batteryPresentPath not found");
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if (!gPaths.batteryCapacityPath)
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LOGE("batteryCapacityPath not found");
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if (!gPaths.batteryVoltagePath)
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LOGE("batteryVoltagePath not found");
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if (!gPaths.batteryTemperaturePath)
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LOGE("batteryTemperaturePath not found");
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if (!gPaths.batteryTechnologyPath)
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LOGE("batteryTechnologyPath not found");
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jclass clazz = env->FindClass("com/android/server/BatteryService");
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if (clazz == NULL) {
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LOGE("Can't find com/android/server/BatteryService");
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return -1;
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}
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gFieldIds.mAcOnline = env->GetFieldID(clazz, "mAcOnline", "Z");
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gFieldIds.mUsbOnline = env->GetFieldID(clazz, "mUsbOnline", "Z");
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gFieldIds.mBatteryStatus = env->GetFieldID(clazz, "mBatteryStatus", "I");
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gFieldIds.mBatteryHealth = env->GetFieldID(clazz, "mBatteryHealth", "I");
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gFieldIds.mBatteryPresent = env->GetFieldID(clazz, "mBatteryPresent", "Z");
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gFieldIds.mBatteryLevel = env->GetFieldID(clazz, "mBatteryLevel", "I");
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gFieldIds.mBatteryTechnology = env->GetFieldID(clazz, "mBatteryTechnology", "Ljava/lang/String;");
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gFieldIds.mBatteryVoltage = env->GetFieldID(clazz, "mBatteryVoltage", "I");
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gFieldIds.mBatteryTemperature = env->GetFieldID(clazz, "mBatteryTemperature", "I");
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LOG_FATAL_IF(gFieldIds.mAcOnline == NULL, "Unable to find BatteryService.AC_ONLINE_PATH");
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LOG_FATAL_IF(gFieldIds.mUsbOnline == NULL, "Unable to find BatteryService.USB_ONLINE_PATH");
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LOG_FATAL_IF(gFieldIds.mBatteryStatus == NULL, "Unable to find BatteryService.BATTERY_STATUS_PATH");
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LOG_FATAL_IF(gFieldIds.mBatteryHealth == NULL, "Unable to find BatteryService.BATTERY_HEALTH_PATH");
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LOG_FATAL_IF(gFieldIds.mBatteryPresent == NULL, "Unable to find BatteryService.BATTERY_PRESENT_PATH");
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LOG_FATAL_IF(gFieldIds.mBatteryLevel == NULL, "Unable to find BatteryService.BATTERY_CAPACITY_PATH");
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LOG_FATAL_IF(gFieldIds.mBatteryVoltage == NULL, "Unable to find BatteryService.BATTERY_VOLTAGE_PATH");
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LOG_FATAL_IF(gFieldIds.mBatteryTemperature == NULL, "Unable to find BatteryService.BATTERY_TEMPERATURE_PATH");
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LOG_FATAL_IF(gFieldIds.mBatteryTechnology == NULL, "Unable to find BatteryService.BATTERY_TECHNOLOGY_PATH");
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clazz = env->FindClass("android/os/BatteryManager");
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if (clazz == NULL) {
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LOGE("Can't find android/os/BatteryManager");
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return -1;
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}
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gConstants.statusUnknown = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_STATUS_UNKNOWN", "I"));
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gConstants.statusCharging = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_STATUS_CHARGING", "I"));
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gConstants.statusDischarging = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_STATUS_DISCHARGING", "I"));
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gConstants.statusNotCharging = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_STATUS_NOT_CHARGING", "I"));
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gConstants.statusFull = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_STATUS_FULL", "I"));
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gConstants.healthUnknown = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_HEALTH_UNKNOWN", "I"));
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gConstants.healthGood = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_HEALTH_GOOD", "I"));
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gConstants.healthOverheat = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_HEALTH_OVERHEAT", "I"));
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gConstants.healthDead = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_HEALTH_DEAD", "I"));
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gConstants.healthOverVoltage = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_HEALTH_OVER_VOLTAGE", "I"));
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gConstants.healthUnspecifiedFailure = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_HEALTH_UNSPECIFIED_FAILURE", "I"));
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gConstants.healthCold = env->GetStaticIntField(clazz,
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env->GetStaticFieldID(clazz, "BATTERY_HEALTH_COLD", "I"));
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return jniRegisterNativeMethods(env, "com/android/server/BatteryService", sMethods, NELEM(sMethods));
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}
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} /* namespace android */
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