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[PATCH] rt2x00: Implement SW diversity

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When mac80211 indicates that the default antenna setup
should be used _and_ that this default setup is SW_DIVERSITY.

This requires sampling and storing the RSSI per antenna
and check once every 2 seconds to determine if the RSSI
has changed significantly. Once this is the case we should sample
the other antenna for a short period and evaluate if
we need to swap antenna or not.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ivo van Doorn
2007-10-13 16:26:36 +02:00
committed by David S. Miller
parent 8de8c5162b
commit 69f81a2cac
4 changed files with 232 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/net/wireless/rt2x00/rt2x00config.c
View File

@ -94,6 +94,26 @@ void rt2x00lib_config_type(struct rt2x00_dev *rt2x00dev, const int type)
rt2x00dev->ops->lib->config_type(rt2x00dev, type, tsf_sync);
}
void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
enum antenna rx, enum antenna tx)
{
struct rt2x00lib_conf libconf;
libconf.ant.rx = rx;
libconf.ant.tx = tx;
/*
* Write new antenna setup to device and reset the link tuner.
* The latter is required since we need to recalibrate the
* noise-sensitivity ratio for the new setup.
*/
rt2x00dev->ops->lib->config(rt2x00dev, CONFIG_UPDATE_ANTENNA, &libconf);
rt2x00lib_reset_link_tuner(rt2x00dev);
rt2x00dev->link.ant.active.rx = libconf.ant.rx;
rt2x00dev->link.ant.active.tx = libconf.ant.tx;
}
void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
struct ieee80211_conf *conf, const int force_config)
{
@ -101,7 +121,7 @@ void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
struct ieee80211_hw_mode *mode;
struct ieee80211_rate *rate;
struct antenna_setup *default_ant = &rt2x00dev->default_ant;
struct antenna_setup *active_ant = &rt2x00dev->link.active_ant;
struct antenna_setup *active_ant = &rt2x00dev->link.ant.active;
int flags = 0;
int short_slot_time;
@ -247,6 +267,6 @@ config:
rt2x00dev->rx_status.freq = conf->freq;
rt2x00dev->rx_status.channel = conf->channel;
rt2x00dev->tx_power = conf->power_level;
rt2x00dev->link.active_ant.rx = libconf.ant.rx;
rt2x00dev->link.active_ant.tx = libconf.ant.tx;
rt2x00dev->link.ant.active.rx = libconf.ant.rx;
rt2x00dev->link.ant.active.tx = libconf.ant.tx;
}