From: Sujith <Sujith.Manoharan@atheros.com>
Date: Mon, 16 Feb 2009 07:53:12 +0000 (+0530)
Subject: ath9k: Program the RTC registers correctly
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=70768496db9ee27d53d3d03d50c93fbf4c0198a0;p=openwrt%2Fstaging%2Fblogic.git

ath9k: Program the RTC registers correctly

This patch programs the RTC registers of AR9100 chipsets
correctly during chip reset.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c
index e33c53fb6b7e..1c02358b31f5 100644
--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -1482,6 +1482,14 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
 	u32 rst_flags;
 	u32 tmpReg;
 
+	if (AR_SREV_9100(ah)) {
+		u32 val = REG_READ(ah, AR_RTC_DERIVED_CLK);
+		val &= ~AR_RTC_DERIVED_CLK_PERIOD;
+		val |= SM(1, AR_RTC_DERIVED_CLK_PERIOD);
+		REG_WRITE(ah, AR_RTC_DERIVED_CLK, val);
+		(void)REG_READ(ah, AR_RTC_DERIVED_CLK);
+	}
+
 	REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_EN |
 		  AR_RTC_FORCE_WAKE_ON_INT);
 
diff --git a/drivers/net/wireless/ath9k/reg.h b/drivers/net/wireless/ath9k/reg.h
index a471832308a0..8d85106d6df2 100644
--- a/drivers/net/wireless/ath9k/reg.h
+++ b/drivers/net/wireless/ath9k/reg.h
@@ -977,8 +977,6 @@ enum {
 #define AR_RTC_PLL_CLKSEL       0x00000300
 #define AR_RTC_PLL_CLKSEL_S     8
 
-
-
 #define AR_RTC_RESET \
 	((AR_SREV_9100(ah)) ? (AR_RTC_BASE + 0x0040) : 0x7040)
 #define AR_RTC_RESET_EN		(0x00000001)
@@ -1015,6 +1013,12 @@ enum {
 #define AR_RTC_INTR_MASK \
 	((AR_SREV_9100(ah)) ? (AR_RTC_BASE + 0x0058) : 0x7058)
 
+/* RTC_DERIVED_* - only for AR9100 */
+
+#define AR_RTC_DERIVED_CLK           (AR_RTC_BASE + 0x0038)
+#define AR_RTC_DERIVED_CLK_PERIOD    0x0000fffe
+#define AR_RTC_DERIVED_CLK_PERIOD_S  1
+
 #define	AR_SEQ_MASK	0x8060
 
 #define AR_AN_RF2G1_CH0         0x7810