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DO NOT MERGE WLAN: Reset power save mode to startup value after DHCP response.

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When the driver was configured to run with power save mode disabled the
power save mode incorrectly got reverted back to AUTO mode right after
DHCP response. The power save mode value is now saved so that the device
properly reverts back to a previous mode after DHCP response.

Change-Id: Ie68cd107872d233bf422e24130a1eb9f6432db91
Bug: 2834260
This commit is contained in:
Mikael Kanstrup
2010-04-07 16:45:58 +02:00
committed by Irfan Sheriff
parent 94364b91a2
commit 876247784e
3 changed files with 42 additions and 2 deletions
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15
core/jni/android_net_wifi_Wifi.cpp
View File

@ -392,6 +392,20 @@ static jboolean android_net_wifi_setPowerModeCommand(JNIEnv* env, jobject clazz,
return (jboolean)!cmdTooLong && doBooleanCommand(cmdstr, "OK");
}
static jint android_net_wifi_getPowerModeCommand(JNIEnv* env, jobject clazz)
{
char reply[256];
int power;
if (doCommand("DRIVER GETPOWER", reply, sizeof(reply)) != 0) {
return (jint)-1;
}
// reply comes back in the form "powermode = XX" where XX is the
// number we're interested in.
sscanf(reply, "%*s = %u", &power);
return (jint)power;
}
static jboolean android_net_wifi_setNumAllowedChannelsCommand(JNIEnv* env, jobject clazz, jint numChannels)
{
char cmdstr[256];
@ -540,6 +554,7 @@ static JNINativeMethod gWifiMethods[] = {
{ "startPacketFiltering", "()Z", (void*) android_net_wifi_startPacketFiltering },
{ "stopPacketFiltering", "()Z", (void*) android_net_wifi_stopPacketFiltering },
{ "setPowerModeCommand", "(I)Z", (void*) android_net_wifi_setPowerModeCommand },
{ "getPowerModeCommand", "()I", (void*) android_net_wifi_getPowerModeCommand },
{ "setNumAllowedChannelsCommand", "(I)Z", (void*) android_net_wifi_setNumAllowedChannelsCommand },
{ "getNumAllowedChannelsCommand", "()I", (void*) android_net_wifi_getNumAllowedChannelsCommand },
{ "setBluetoothCoexistenceModeCommand", "(I)Z",

2
wifi/java/android/net/wifi/WifiNative.java
View File

@ -109,6 +109,8 @@ public class WifiNative {
public native static boolean setPowerModeCommand(int mode);
public native static int getPowerModeCommand();
public native static boolean setNumAllowedChannelsCommand(int numChannels);
public native static int getNumAllowedChannelsCommand();

27
wifi/java/android/net/wifi/WifiStateTracker.java
View File

@ -1930,6 +1930,17 @@ public class WifiStateTracker extends NetworkStateTracker {
return WifiNative.stopPacketFiltering();
}
/**
* Get power mode
* @return power mode
*/
public synchronized int getPowerMode() {
if (mWifiState.get() != WIFI_STATE_ENABLED && !isDriverStopped()) {
return -1;
}
return WifiNative.getPowerModeCommand();
}
/**
* Set power mode
* @param mode
@ -2255,6 +2266,8 @@ public class WifiStateTracker extends NetworkStateTracker {
case EVENT_DHCP_START:
boolean modifiedBluetoothCoexistenceMode = false;
int powerMode = DRIVER_POWER_MODE_AUTO;
if (shouldDisableCoexistenceMode()) {
/*
* There are problems setting the Wi-Fi driver's power
@ -2279,7 +2292,15 @@ public class WifiStateTracker extends NetworkStateTracker {
WifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED);
}
setPowerMode(DRIVER_POWER_MODE_ACTIVE);
powerMode = getPowerMode();
if (powerMode < 0) {
// Handle the case where supplicant driver does not support
// getPowerModeCommand.
powerMode = DRIVER_POWER_MODE_AUTO;
}
if (powerMode != DRIVER_POWER_MODE_ACTIVE) {
setPowerMode(DRIVER_POWER_MODE_ACTIVE);
}
synchronized (this) {
// A new request is being made, so assume we will callback
@ -2295,7 +2316,9 @@ public class WifiStateTracker extends NetworkStateTracker {
NetworkUtils.getDhcpError());
}
setPowerMode(DRIVER_POWER_MODE_AUTO);
if (powerMode != DRIVER_POWER_MODE_ACTIVE) {
setPowerMode(powerMode);
}
if (modifiedBluetoothCoexistenceMode) {
// Set the coexistence mode back to its default value