ath5k: Add tx power calibration support

* Add tx power calibration support
* Add a few tx power limits
* Hardcode default power to 12.5dB
* Disable TPC for now

v2: Address Jiri's comments

Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath5k/desc.c b/drivers/net/wireless/ath5k/desc.c
index b40a9287a39a..dc30a2b70a6b 100644
--- a/drivers/net/wireless/ath5k/desc.c
+++ b/drivers/net/wireless/ath5k/desc.c
@@ -194,6 +194,10 @@ static int ath5k_hw_setup_4word_tx_desc(struct ath5k_hw *ah,
                 return -EINVAL;
         }
 
+        tx_power += ah->ah_txpower.txp_offset;
+        if (tx_power > AR5K_TUNE_MAX_TXPOWER)
+                tx_power = AR5K_TUNE_MAX_TXPOWER;
+
         /* Clear descriptor */
         memset(&desc->ud.ds_tx5212, 0, sizeof(struct ath5k_hw_5212_tx_desc));