ath9k_hw: Configure internal regulator for AR9485

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ar9003_eeprom.c

@@ -3653,29 +3653,88 @@ static void ar9003_hw_atten_apply(struct ath_hw *ah, struct ath9k_channel *chan)
 	}
 }
 
+static bool is_pmu_set(struct ath_hw *ah, u32 pmu_reg, int pmu_set)
+{
+	int timeout = 100;
+
+	while (pmu_set != REG_READ(ah, pmu_reg)) {
+		if (timeout-- == 0)
+			return false;
+		REG_WRITE(ah, pmu_reg, pmu_set);
+		udelay(10);
+	}
+
+	return true;
+}
+
 static void ar9003_hw_internal_regulator_apply(struct ath_hw *ah)
 {
 	int internal_regulator =
 		ath9k_hw_ar9300_get_eeprom(ah, EEP_INTERNAL_REGULATOR);
 
 	if (internal_regulator) {
-		/* Internal regulator is ON. Write swreg register. */
+		if (AR_SREV_9485(ah)) {
-		int swreg = ath9k_hw_ar9300_get_eeprom(ah, EEP_SWREG);
+			int reg_pmu_set;
-		REG_WRITE(ah, AR_RTC_REG_CONTROL1,
+
-		REG_READ(ah, AR_RTC_REG_CONTROL1) &
+			reg_pmu_set = REG_READ(ah, AR_PHY_PMU2) & ~AR_PHY_PMU2_PGM;
-			 (~AR_RTC_REG_CONTROL1_SWREG_PROGRAM));
+			REG_WRITE(ah, AR_PHY_PMU2, reg_pmu_set);
-		REG_WRITE(ah, AR_RTC_REG_CONTROL0, swreg);
+			if (!is_pmu_set(ah, AR_PHY_PMU2, reg_pmu_set))
-		/* Set REG_CONTROL1.SWREG_PROGRAM */
+				return;
-		REG_WRITE(ah, AR_RTC_REG_CONTROL1,
+
-			  REG_READ(ah,
+			reg_pmu_set = (5 << 1) | (7 << 4) | (1 << 8) |
-				   AR_RTC_REG_CONTROL1) |
+				      (7 << 14) | (6 << 17) | (1 << 20) |
-				   AR_RTC_REG_CONTROL1_SWREG_PROGRAM);
+				      (3 << 24) | (1 << 28);
+
+			REG_WRITE(ah, AR_PHY_PMU1, reg_pmu_set);
+			if (!is_pmu_set(ah, AR_PHY_PMU1, reg_pmu_set))
+				return;
+
+			reg_pmu_set = (REG_READ(ah, AR_PHY_PMU2) & ~0xFFC00000)
+					| (4 << 26);
+			REG_WRITE(ah, AR_PHY_PMU2, reg_pmu_set);
+			if (!is_pmu_set(ah, AR_PHY_PMU2, reg_pmu_set))
+				return;
+
+			reg_pmu_set = (REG_READ(ah, AR_PHY_PMU2) & ~0x00200000)
+					| (1 << 21);
+			REG_WRITE(ah, AR_PHY_PMU2, reg_pmu_set);
+			if (!is_pmu_set(ah, AR_PHY_PMU2, reg_pmu_set))
+				return;
+		} else {
+			/* Internal regulator is ON. Write swreg register. */
+			int swreg = ath9k_hw_ar9300_get_eeprom(ah, EEP_SWREG);
+			REG_WRITE(ah, AR_RTC_REG_CONTROL1,
+				  REG_READ(ah, AR_RTC_REG_CONTROL1) &
+				  (~AR_RTC_REG_CONTROL1_SWREG_PROGRAM));
+			REG_WRITE(ah, AR_RTC_REG_CONTROL0, swreg);
+			/* Set REG_CONTROL1.SWREG_PROGRAM */
+			REG_WRITE(ah, AR_RTC_REG_CONTROL1,
+				  REG_READ(ah,
+					   AR_RTC_REG_CONTROL1) |
+					   AR_RTC_REG_CONTROL1_SWREG_PROGRAM);
+		}
 	} else {
-		REG_WRITE(ah, AR_RTC_SLEEP_CLK,
+		if (AR_SREV_9485(ah)) {
-			  (REG_READ(ah,
+			REG_RMW_FIELD(ah, AR_PHY_PMU2, AR_PHY_PMU2_PGM, 0);
-				    AR_RTC_SLEEP_CLK) |
+			while (REG_READ_FIELD(ah, AR_PHY_PMU2,
-				    AR_RTC_FORCE_SWREG_PRD));
+					      AR_PHY_PMU2_PGM))
+				udelay(10);
+
+			REG_RMW_FIELD(ah, AR_PHY_PMU1, AR_PHY_PMU1_PWD, 0x1);
+			while (!REG_READ_FIELD(ah, AR_PHY_PMU1,
+					       AR_PHY_PMU1_PWD))
+				udelay(10);
+			REG_RMW_FIELD(ah, AR_PHY_PMU2, AR_PHY_PMU2_PGM, 0x1);
+			while (!REG_READ_FIELD(ah, AR_PHY_PMU2,
+					      AR_PHY_PMU2_PGM))
+				udelay(10);
+		} else
+			REG_WRITE(ah, AR_RTC_SLEEP_CLK,
+				  (REG_READ(ah,
+				   AR_RTC_SLEEP_CLK) |
+				   AR_RTC_FORCE_SWREG_PRD));
 	}
+
 }
 
 static void ath9k_hw_ar9300_set_board_values(struct ath_hw *ah,

drivers/net/wireless/ath/ath9k/ar9003_phy.h

@@ -598,6 +598,14 @@
 #define AR_CH0_TOP2_XPABIASLVL		0xf000
 #define AR_CH0_TOP2_XPABIASLVL_S	12
 
+#define AR_PHY_PMU1		0x16c40
+#define AR_PHY_PMU1_PWD		0x1
+#define AR_PHY_PMU1_PWD_S	0
+
+#define AR_PHY_PMU2		0x16c44
+#define AR_PHY_PMU2_PGM		0x00200000
+#define AR_PHY_PMU2_PGM_S	21
+
 #define AR_PHY_RX1DB_BIQUAD_LONG_SHIFT		0x00380000
 #define AR_PHY_RX1DB_BIQUAD_LONG_SHIFT_S	19
 #define AR_PHY_RX6DB_BIQUAD_LONG_SHIFT		0x00c00000