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, 24 insertions, 11 deletions

diff --git a/drivers/net/wireless/ath5k/ath5k.h b/drivers/net/wireless/ath5k/ath5k.h
index 0dc2c7321c8b..0b616e72fe05 100644
--- a/drivers/net/wireless/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath5k/ath5k.h
@@ -204,9 +204,9 @@
 #define AR5K_TUNE_CWMAX_11B                     1023
 #define AR5K_TUNE_CWMAX_XR                      7
 #define AR5K_TUNE_NOISE_FLOOR                   -72
-#define AR5K_TUNE_MAX_TXPOWER                   60
-#define AR5K_TUNE_DEFAULT_TXPOWER               30
-#define AR5K_TUNE_TPC_TXPOWER                   true
+#define AR5K_TUNE_MAX_TXPOWER                   63
+#define AR5K_TUNE_DEFAULT_TXPOWER               25
+#define AR5K_TUNE_TPC_TXPOWER                   false
 #define AR5K_TUNE_ANT_DIVERSITY                 true
 #define AR5K_TUNE_HWTXTRIES                     4
 
@@ -551,11 +551,11 @@ enum ath5k_pkt_type {
  */
 #define AR5K_TXPOWER_OFDM(_r, _v)       (                       \
         ((0 & 1) << ((_v) + 6)) |                               \
-        (((ah->ah_txpower.txp_rates[(_r)]) & 0x3f) << (_v))     \
+        (((ah->ah_txpower.txp_rates_power_table[(_r)]) & 0x3f) << (_v)) \
 )
 
 #define AR5K_TXPOWER_CCK(_r, _v)        (                       \
-        (ah->ah_txpower.txp_rates[(_r)] & 0x3f) << (_v) \
+        (ah->ah_txpower.txp_rates_power_table[(_r)] & 0x3f) << (_v)     \
 )
 
 /*
@@ -1085,13 +1085,25 @@ struct ath5k_hw {
         struct ath5k_gain       ah_gain;
         u8                      ah_offset[AR5K_MAX_RF_BANKS];
 
+
         struct {
-                u16             txp_pcdac[AR5K_EEPROM_POWER_TABLE_SIZE];
-                u16             txp_rates[AR5K_MAX_RATES];
-                s16             txp_min;
-                s16             txp_max;
+                /* Temporary tables used for interpolation */
+                u8              tmpL[AR5K_EEPROM_N_PD_GAINS]
+                                        [AR5K_EEPROM_POWER_TABLE_SIZE];
+                u8              tmpR[AR5K_EEPROM_N_PD_GAINS]
+                                        [AR5K_EEPROM_POWER_TABLE_SIZE];
+                u8              txp_pd_table[AR5K_EEPROM_POWER_TABLE_SIZE * 2];
+                u16             txp_rates_power_table[AR5K_MAX_RATES];
+                u8              txp_min_idx;
                 bool            txp_tpc;
+                /* Values in 0.25dB units */
+                s16             txp_min_pwr;
+                s16             txp_max_pwr;
+                s16             txp_offset;
                 s16             txp_ofdm;
+                /* Values in dB units */
+                s16             txp_cck_ofdm_pwr_delta;
+                s16             txp_cck_ofdm_gainf_delta;
         } ah_txpower;
 
         struct {
@@ -1161,6 +1173,7 @@ extern void ath5k_hw_update_mib_counters(struct ath5k_hw *ah, struct ieee80211_l
 
 /* EEPROM access functions */
 extern int ath5k_eeprom_init(struct ath5k_hw *ah);
+extern void ath5k_eeprom_detach(struct ath5k_hw *ah);
 extern int ath5k_eeprom_read_mac(struct ath5k_hw *ah, u8 *mac);
 extern bool ath5k_eeprom_is_hb63(struct ath5k_hw *ah);
 
@@ -1256,8 +1269,8 @@ extern void ath5k_hw_set_def_antenna(struct ath5k_hw *ah, unsigned int ant);
 extern unsigned int ath5k_hw_get_def_antenna(struct ath5k_hw *ah);
 extern int ath5k_hw_phy_disable(struct ath5k_hw *ah);
 /* TX power setup */
-extern int ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel, unsigned int txpower);
-extern int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, unsigned int power);
+extern int ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel, u8 ee_mode, u8 txpower);
+extern int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 ee_mode, u8 txpower);
 
 /*
  * Functions used internaly