diff options
| author | Ivo van Doorn <ivdoorn@gmail.com> | 2008-12-20 10:52:42 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-01-29 21:58:34 +0100 |
| commit | 7d7f19ccb777946df0a8fb7c83189ba2ae08b02e (patch) | |
| tree | 38fcea85510a4945283cf23bc029261b3941fc74 /drivers/net/wireless/rt2x00/rt2500usb.c | |
| parent | b43: Use 64bit atomic register access for TSF (diff) | |
| download | linux-7d7f19ccb777946df0a8fb7c83189ba2ae08b02e.tar.xz linux-7d7f19ccb777946df0a8fb7c83189ba2ae08b02e.zip | |
rt2x00: Implement Powersaving
Listen to IEEE80211_CONF_PS to determine if the device
should drop into powersaving mode. This feature depends
on the dynamic power save functionality in mac80211.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2500usb.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2500usb.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c index af6b5847be5c..23cf585f03a4 100644 --- a/drivers/net/wireless/rt2x00/rt2500usb.c +++ b/drivers/net/wireless/rt2x00/rt2500usb.c @@ -634,6 +634,32 @@ static void rt2500usb_config_duration(struct rt2x00_dev *rt2x00dev, rt2500usb_register_write(rt2x00dev, TXRX_CSR18, reg); } +static void rt2500usb_config_ps(struct rt2x00_dev *rt2x00dev, + struct rt2x00lib_conf *libconf) +{ + enum dev_state state = + (libconf->conf->flags & IEEE80211_CONF_PS) ? + STATE_SLEEP : STATE_AWAKE; + u16 reg; + + if (state == STATE_SLEEP) { + rt2500usb_register_read(rt2x00dev, MAC_CSR18, ®); + rt2x00_set_field16(®, MAC_CSR18_DELAY_AFTER_BEACON, + libconf->conf->beacon_int - 20); + rt2x00_set_field16(®, MAC_CSR18_BEACONS_BEFORE_WAKEUP, + libconf->conf->listen_interval - 1); + + /* We must first disable autowake before it can be enabled */ + rt2x00_set_field16(®, MAC_CSR18_AUTO_WAKE, 0); + rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg); + + rt2x00_set_field16(®, MAC_CSR18_AUTO_WAKE, 1); + rt2500usb_register_write(rt2x00dev, MAC_CSR18, reg); + } + + rt2x00dev->ops->lib->set_device_state(rt2x00dev, state); +} + static void rt2500usb_config(struct rt2x00_dev *rt2x00dev, struct rt2x00lib_conf *libconf, const unsigned int flags) @@ -647,6 +673,8 @@ static void rt2500usb_config(struct rt2x00_dev *rt2x00dev, libconf->conf->power_level); if (flags & IEEE80211_CONF_CHANGE_BEACON_INTERVAL) rt2500usb_config_duration(rt2x00dev, libconf); + if (flags & IEEE80211_CONF_CHANGE_PS) + rt2500usb_config_ps(rt2x00dev, libconf); } /* |