ath9k: Fix RTC_DERIVED_CLK usage

commit 4e6ce4dc7ce71d0886908d55129d5d6482a27ff9 upstream.

Based on the reference clock, which could be 25MHz or 40MHz,
AR_RTC_DERIVED_CLK is programmed differently for AR9340 and AR9550.
But, when a chip reset is done, processing the initvals
sets the register back to the default value.

Fix this by moving the code in ath9k_hw_init_pll() to
ar9003_hw_override_ini(). Also, do this override for AR9531.

Signed-off-by: Miaoqing Pan <miaoqing@qca.qualcomm.com>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 09facba..390c2de 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -647,6 +647,19 @@ static void ar9003_hw_override_ini(struct ath_hw *ah)
                ah->enabled_cals |= TX_CL_CAL;
        else
                ah->enabled_cals &= ~TX_CL_CAL;
+
+       if (AR_SREV_9340(ah) || AR_SREV_9531(ah) || AR_SREV_9550(ah)) {
+               if (ah->is_clk_25mhz) {
+                       REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
+                       REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
+                       REG_WRITE(ah, AR_SLP32_INC, 0x0001e7ae);
+               } else {
+                       REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
+                       REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
+                       REG_WRITE(ah, AR_SLP32_INC, 0x0001e800);
+               }
+               udelay(100);
+       }
 }
 
 static void ar9003_hw_prog_ini(struct ath_hw *ah,

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 9078a6c..dcc1494 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -858,19 +858,6 @@ static void ath9k_hw_init_pll(struct ath_hw *ah,
        udelay(RTC_PLL_SETTLE_DELAY);
 
        REG_WRITE(ah, AR_RTC_SLEEP_CLK, AR_RTC_FORCE_DERIVED_CLK);
-
-       if (AR_SREV_9340(ah) || AR_SREV_9550(ah)) {
-               if (ah->is_clk_25mhz) {
-                       REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x17c << 1);
-                       REG_WRITE(ah, AR_SLP32_MODE, 0x0010f3d7);
-                       REG_WRITE(ah,  AR_SLP32_INC, 0x0001e7ae);
-               } else {
-                       REG_WRITE(ah, AR_RTC_DERIVED_CLK, 0x261 << 1);
-                       REG_WRITE(ah, AR_SLP32_MODE, 0x0010f400);
-                       REG_WRITE(ah,  AR_SLP32_INC, 0x0001e800);
-               }
-               udelay(100);
-       }
 }
 
 static void ath9k_hw_init_interrupt_masks(struct ath_hw *ah,