b43: Rewrite TX power adjustment

This patch rewrites the TX power recalculation algorithms to scale better
with changed enviromnent. If there's low
TX traffic, the power will be checked against the desired values
every 60 seconds.
If there is high TX traffic, the check is redone every 2 seconds. This improves
the reaction times a lot and confuses the rate control less.
It will also reduce the time it initially takes to tune to a new TX power
value. With the old algorithm it could take about 30 to 45 seconds to settle to
a new power value. This will happen in about two to four seconds now.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 6 deletions

diff --git a/drivers/net/wireless/b43/nphy.c b/drivers/net/wireless/b43/nphy.c
index 831986c459f8..4cfeab8560f6 100644
--- a/drivers/net/wireless/b43/nphy.c
+++ b/drivers/net/wireless/b43/nphy.c
@@ -34,10 +34,16 @@ void b43_nphy_set_rxantenna(struct b43_wldev *dev, int antenna)
 {//TODO
 }
 
-void b43_nphy_xmitpower(struct b43_wldev *dev)
+static void b43_nphy_op_adjust_txpower(struct b43_wldev *dev)
 {//TODO
 }
 
+static enum b43_txpwr_result b43_nphy_op_recalc_txpower(struct b43_wldev *dev,
+                                                        bool ignore_tssi)
+{//TODO
+        return B43_TXPWR_RES_DONE;
+}
+
 static void b43_chantab_radio_upload(struct b43_wldev *dev,
                                      const struct b43_nphy_channeltab_entry *e)
 {
@@ -602,10 +608,6 @@ static unsigned int b43_nphy_op_get_default_chan(struct b43_wldev *dev)
         return 36;
 }
 
-static void b43_nphy_op_xmitpower(struct b43_wldev *dev)
-{//TODO
-}
-
 const struct b43_phy_operations b43_phyops_n = {
         .allocate               = b43_nphy_op_allocate,
         .init                   = b43_nphy_op_init,
@@ -617,5 +619,6 @@ const struct b43_phy_operations b43_phyops_n = {
         .software_rfkill        = b43_nphy_op_software_rfkill,
         .switch_channel         = b43_nphy_op_switch_channel,
         .get_default_chan       = b43_nphy_op_get_default_chan,
-        .xmitpower              = b43_nphy_op_xmitpower,
+        .recalc_txpower         = b43_nphy_op_recalc_txpower,
+        .adjust_txpower         = b43_nphy_op_adjust_txpower,
 };