ath5k: Misc hw_reset updates

 * Update hw_reset to calculate some of the values we were using as static
 * Increase activation to rx delay

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

1 files changed, 27 insertions, 4 deletions

diff --git a/drivers/net/wireless/ath5k/hw.c b/drivers/net/wireless/ath5k/hw.c
index 8cd8659e9128..dc51b844c62d 100644
--- a/drivers/net/wireless/ath5k/hw.c
+++ b/drivers/net/wireless/ath5k/hw.c
@@ -847,7 +847,22 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
                         else
                                 ath5k_hw_reg_write(ah, 0x00000000, 0x994c);
 
-                        ath5k_hw_reg_write(ah, 0x000009b5, 0xa228);
+                        /* Some bits are disabled here, we know nothing about
+                         * register 0xa228 yet, most of the times this ends up
+                         * with a value 0x9b5 -haven't seen any dump with
+                         * a different value- */
+                        /* Got this from decompiling binary HAL */
+                        data = ath5k_hw_reg_read(ah, 0xa228);
+                        data &= 0xfffffdff;
+                        ath5k_hw_reg_write(ah, data, 0xa228);
+
+                        data = ath5k_hw_reg_read(ah, 0xa228);
+                        data &= 0xfffe03ff;
+                        ath5k_hw_reg_write(ah, data, 0xa228);
+                        data = 0;
+
+                        /* Just write 0x9b5 ? */
+                        /* ath5k_hw_reg_write(ah, 0x000009b5, 0xa228); */
                         ath5k_hw_reg_write(ah, 0x0000000f, AR5K_SEQ_MASK);
                         ath5k_hw_reg_write(ah, 0x00000000, 0xa254);
                         ath5k_hw_reg_write(ah, 0x0000000e, AR5K_PHY_SCAL);
@@ -864,6 +879,7 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
                         else
                                 data = 0xffb80d20;
                         ath5k_hw_reg_write(ah, data, AR5K_PHY_FRAME_CTL);
+                        data = 0;
                 }
 
                 /*
@@ -883,7 +899,6 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
 
                 /*
                  * Write RF registers
-                 * TODO:Does this work on 5211 (5111) ?
                  */
                 ret = ath5k_hw_rfregs(ah, channel, mode);
                 if (ret)
@@ -1048,7 +1063,8 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
         ath5k_hw_reg_write(ah, AR5K_PHY_ACT_ENABLE, AR5K_PHY_ACT);
 
         /*
-         * 5111/5112 Specific
+         * On 5211+ read activation -> rx delay
+         * and use it.
          */
         if (ah->ah_version != AR5K_AR5210) {
                 data = ath5k_hw_reg_read(ah, AR5K_PHY_RX_DELAY) &
@@ -1056,7 +1072,8 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
                 data = (channel->hw_value & CHANNEL_CCK) ?
                         ((data << 2) / 22) : (data / 10);
 
-                udelay(100 + data);
+                udelay(100 + (2 * data));
+                data = 0;
         } else {
                 mdelay(1);
         }
@@ -1139,6 +1156,12 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
                 ath5k_hw_reg_write(ah, AR5K_PHY_SCLOCK_32MHZ, AR5K_PHY_SCLOCK);
                 ath5k_hw_reg_write(ah, AR5K_PHY_SDELAY_32MHZ, AR5K_PHY_SDELAY);
                 ath5k_hw_reg_write(ah, ah->ah_phy_spending, AR5K_PHY_SPENDING);
+
+                data = ath5k_hw_reg_read(ah, AR5K_USEC_5211) & 0xffffc07f ;
+                data |= (ah->ah_phy_spending == AR5K_PHY_SPENDING_18) ?
+                                                0x00000f80 : 0x00001380 ;
+                ath5k_hw_reg_write(ah, data, AR5K_USEC_5211);
+                data = 0;
         }
 
         if (ah->ah_version == AR5K_AR5212) {