ath9k: add initial hardware support for ar9271
We will finalize this after some driver core changes, for now
we leave this unsupported.
Cc: Stephen Chen <stephen.chen@atheros.com>
Cc: Zhifeng Cai <zhifeng.cai@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/calib.c b/drivers/net/wireless/ath/ath9k/calib.c
index d1bbb02..26d8752 100644
--- a/drivers/net/wireless/ath/ath9k/calib.c
+++ b/drivers/net/wireless/ath/ath9k/calib.c
@@ -753,6 +753,98 @@
}
}
+static void ath9k_hw_9271_pa_cal(struct ath_hw *ah)
+{
+ u32 regVal;
+ unsigned int i;
+ u32 regList [][2] = {
+ { 0x786c, 0 },
+ { 0x7854, 0 },
+ { 0x7820, 0 },
+ { 0x7824, 0 },
+ { 0x7868, 0 },
+ { 0x783c, 0 },
+ { 0x7838, 0 } ,
+ { 0x7828, 0 } ,
+ };
+
+ for (i = 0; i < ARRAY_SIZE(regList); i++)
+ regList[i][1] = REG_READ(ah, regList[i][0]);
+
+ regVal = REG_READ(ah, 0x7834);
+ regVal &= (~(0x1));
+ REG_WRITE(ah, 0x7834, regVal);
+ regVal = REG_READ(ah, 0x9808);
+ regVal |= (0x1 << 27);
+ REG_WRITE(ah, 0x9808, regVal);
+
+ /* 786c,b23,1, pwddac=1 */
+ REG_RMW_FIELD(ah, AR9285_AN_TOP3, AR9285_AN_TOP3_PWDDAC, 1);
+ /* 7854, b5,1, pdrxtxbb=1 */
+ REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDRXTXBB1, 1);
+ /* 7854, b7,1, pdv2i=1 */
+ REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDV2I, 1);
+ /* 7854, b8,1, pddacinterface=1 */
+ REG_RMW_FIELD(ah, AR9285_AN_RXTXBB1, AR9285_AN_RXTXBB1_PDDACIF, 1);
+ /* 7824,b12,0, offcal=0 */
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G2, AR9285_AN_RF2G2_OFFCAL, 0);
+ /* 7838, b1,0, pwddb=0 */
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G7, AR9285_AN_RF2G7_PWDDB, 0);
+ /* 7820,b11,0, enpacal=0 */
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_ENPACAL, 0);
+ /* 7820,b25,1, pdpadrv1=0 */
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPADRV1, 0);
+ /* 7820,b24,0, pdpadrv2=0 */
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G1,AR9285_AN_RF2G1_PDPADRV2,0);
+ /* 7820,b23,0, pdpaout=0 */
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G1, AR9285_AN_RF2G1_PDPAOUT, 0);
+ /* 783c,b14-16,7, padrvgn2tab_0=7 */
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G8,AR9285_AN_RF2G8_PADRVGN2TAB0, 7);
+ /*
+ * 7838,b29-31,0, padrvgn1tab_0=0
+ * does not matter since we turn it off
+ */
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G7,AR9285_AN_RF2G7_PADRVGN2TAB0, 0);
+
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G3, AR9271_AN_RF2G3_CCOMP, 0xfff);
+
+ /* Set:
+ * localmode=1,bmode=1,bmoderxtx=1,synthon=1,
+ * txon=1,paon=1,oscon=1,synthon_force=1
+ */
+ REG_WRITE(ah, AR9285_AN_TOP2, 0xca0358a0);
+ udelay(30);
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9271_AN_RF2G6_OFFS, 0);
+
+ /* find off_6_1; */
+ for (i = 6; i >= 0; i--) {
+ regVal = REG_READ(ah, 0x7834);
+ regVal |= (1 << (20 + i));
+ REG_WRITE(ah, 0x7834, regVal);
+ udelay(1);
+ //regVal = REG_READ(ah, 0x7834);
+ regVal &= (~(0x1 << (20 + i)));
+ regVal |= (MS(REG_READ(ah, 0x7840), AR9285_AN_RXTXBB1_SPARE9)
+ << (20 + i));
+ REG_WRITE(ah, 0x7834, regVal);
+ }
+
+ /* Empirical offset correction */
+#if 0
+ REG_RMW_FIELD(ah, AR9285_AN_RF2G6, AR9271_AN_RF2G6_OFFS, 0x20);
+#endif
+
+ regVal = REG_READ(ah, 0x7834);
+ regVal |= 0x1;
+ REG_WRITE(ah, 0x7834, regVal);
+ regVal = REG_READ(ah, 0x9808);
+ regVal &= (~(0x1 << 27));
+ REG_WRITE(ah, 0x9808, regVal);
+
+ for (i = 0; i < ARRAY_SIZE(regList); i++)
+ REG_WRITE(ah, regList[i][0], regList[i][1]);
+}
+
static inline void ath9k_hw_9285_pa_cal(struct ath_hw *ah)
{
@@ -869,14 +961,26 @@
}
}
+ /* Do NF cal only at longer intervals */
if (longcal) {
- if (AR_SREV_9285_11_OR_LATER(ah))
+ /* Do periodic PAOffset Cal */
+ if (AR_SREV_9271(ah))
+ ath9k_hw_9271_pa_cal(ah);
+ else if (AR_SREV_9285_11_OR_LATER(ah))
ath9k_hw_9285_pa_cal(ah);
if (OLC_FOR_AR9280_20_LATER || OLC_FOR_AR9287_10_LATER)
ath9k_olc_temp_compensation(ah);
+
+ /* Get the value from the previous NF cal and update history buffer */
ath9k_hw_getnf(ah, chan);
+
+ /*
+ * Load the NF from history buffer of the current channel.
+ * NF is slow time-variant, so it is OK to use a historical value.
+ */
ath9k_hw_loadnf(ah, ah->curchan);
+
ath9k_hw_start_nfcal(ah);
}