ath5k: Small cleanup on tweak_initvals

 * Now that we properly set rx/tx latencies for AR5311 remove
 that old buggy part of code left inside ath5k_hw_tweak_initval_settings
 that was never executed (you can't have an RF5112 radio on a mac older
 than AR5212). Also use a magic value for 5311 PHY_SCAL value.
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath5k/reg.h

@@ -2058,6 +2058,7 @@
 
 #define AR5K_PHY_SCAL			0x9878
 #define AR5K_PHY_SCAL_32MHZ		0x0000000e
+#define	AR5K_PHY_SCAL_32MHZ_5311	0x00000008
 #define	AR5K_PHY_SCAL_32MHZ_2417	0x0000000a
 #define	AR5K_PHY_SCAL_32MHZ_HB63	0x00000032
 

drivers/net/wireless/ath/ath5k/reset.c

@@ -730,24 +730,12 @@ static void ath5k_hw_tweak_initval_settings(struct ath5k_hw *ah,
 		ath5k_hw_reg_write(ah, data, AR5K_PHY_FRAME_CTL);
 	}
 
-	if ((ah->ah_radio == AR5K_RF5112) &&
-	(ah->ah_mac_srev < AR5K_SREV_AR5211)) {
-		u32 usec_reg;
-		/* 5311 has different tx/rx latency masks
-		 * from 5211, since we deal 5311 the same
-		 * as 5211 when setting initvals, shift
-		 * values here to their proper locations */
-		usec_reg = ath5k_hw_reg_read(ah, AR5K_USEC_5211);
-		ath5k_hw_reg_write(ah, usec_reg & (AR5K_USEC_1 |
-				AR5K_USEC_32 |
-				AR5K_USEC_TX_LATENCY_5211 |
-				AR5K_REG_SM(29,
-				AR5K_USEC_RX_LATENCY_5210)),
-				AR5K_USEC_5211);
+	if (ah->ah_mac_srev < AR5K_SREV_AR5211) {
 		/* Clear QCU/DCU clock gating register */
 		ath5k_hw_reg_write(ah, 0, AR5K_QCUDCU_CLKGT);
 		/* Set DAC/ADC delays */
-		ath5k_hw_reg_write(ah, 0x08, AR5K_PHY_SCAL);
+		ath5k_hw_reg_write(ah, AR5K_PHY_SCAL_32MHZ_5311,
+						AR5K_PHY_SCAL);
 		/* Enable PCU FIFO corruption ECO */
 		AR5K_REG_ENABLE_BITS(ah, AR5K_DIAG_SW_5211,
 					AR5K_DIAG_SW_ECO_ENABLE);