ath9k: Enable Fractional N mode
This patch enables Fractional N mode for all channel
if the EEPROM says so, and also fixes the INI only
when the device is not a 2 GHz only capable device.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/eeprom.c b/drivers/net/wireless/ath9k/eeprom.c
index 34e9d81..68de89d 100644
--- a/drivers/net/wireless/ath9k/eeprom.c
+++ b/drivers/net/wireless/ath9k/eeprom.c
@@ -466,6 +466,8 @@
return pBase->txMask;
case EEP_RX_MASK:
return pBase->rxMask;
+ case EEP_FRAC_N_5G:
+ return 0;
default:
return 0;
}
@@ -1599,6 +1601,11 @@
return pBase->dacHiPwrMode_5G;
else
return 0;
+ case EEP_FRAC_N_5G:
+ if (AR5416_VER_MASK >= AR5416_EEP_MINOR_VER_22)
+ return pBase->frac_n_5g;
+ else
+ return 0;
default:
return 0;
}
diff --git a/drivers/net/wireless/ath9k/eeprom.h b/drivers/net/wireless/ath9k/eeprom.h
index 5c0d6c3..60cb23d 100644
--- a/drivers/net/wireless/ath9k/eeprom.h
+++ b/drivers/net/wireless/ath9k/eeprom.h
@@ -125,6 +125,7 @@
#define AR5416_EEP_MINOR_VER_17 0x11
#define AR5416_EEP_MINOR_VER_19 0x13
#define AR5416_EEP_MINOR_VER_20 0x14
+#define AR5416_EEP_MINOR_VER_22 0x16
#define AR5416_NUM_5G_CAL_PIERS 8
#define AR5416_NUM_2G_CAL_PIERS 4
@@ -188,6 +189,7 @@
EEP_RXGAIN_TYPE,
EEP_TXGAIN_TYPE,
EEP_DAC_HPWR_5G,
+ EEP_FRAC_N_5G
};
enum ar5416_rates {
@@ -232,7 +234,9 @@
u8 txGainType;
u8 rcChainMask;
u8 desiredScaleCCK;
- u8 futureBase_3[23];
+ u8 power_table_offset;
+ u8 frac_n_5g;
+ u8 futureBase_3[21];
} __packed;
struct base_eep_header_4k {
diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c
index 55d5a74..6939e41 100644
--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -823,7 +823,16 @@
if (AR_SREV_9280_20(ah))
ath9k_hw_init_txgain_ini(ah);
- if (ah->hw_version.devid == AR9280_DEVID_PCI) {
+ if (!ath9k_hw_fill_cap_info(ah)) {
+ DPRINTF(sc, ATH_DBG_RESET, "failed ath9k_hw_fill_cap_info\n");
+ ecode = -EINVAL;
+ goto bad;
+ }
+
+ if ((ah->hw_version.devid == AR9280_DEVID_PCI) &&
+ test_bit(ATH9K_MODE_11A, ah->caps.wireless_modes)) {
+
+ /* EEPROM Fixup */
for (i = 0; i < ah->iniModes.ia_rows; i++) {
u32 reg = INI_RA(&ah->iniModes, i, 0);
@@ -838,13 +847,6 @@
}
}
- if (!ath9k_hw_fill_cap_info(ah)) {
- DPRINTF(sc, ATH_DBG_RESET,
- "failed ath9k_hw_fill_cap_info\n");
- ecode = -EINVAL;
- goto bad;
- }
-
ecode = ath9k_hw_init_macaddr(ah);
if (ecode != 0) {
DPRINTF(sc, ATH_DBG_RESET,
diff --git a/drivers/net/wireless/ath9k/phy.c b/drivers/net/wireless/ath9k/phy.c
index 52aa2a7..e1494ba 100644
--- a/drivers/net/wireless/ath9k/phy.c
+++ b/drivers/net/wireless/ath9k/phy.c
@@ -132,20 +132,27 @@
bMode = 0;
fracMode = 0;
- if ((freq % 20) == 0) {
- aModeRefSel = 3;
- } else if ((freq % 10) == 0) {
- aModeRefSel = 2;
- } else {
+ switch(ah->eep_ops->get_eeprom(ah, EEP_FRAC_N_5G)) {
+ case 0:
+ if ((freq % 20) == 0) {
+ aModeRefSel = 3;
+ } else if ((freq % 10) == 0) {
+ aModeRefSel = 2;
+ }
+ if (aModeRefSel)
+ break;
+ case 1:
+ default:
aModeRefSel = 0;
-
fracMode = 1;
refDivA = 1;
channelSel = (freq * 0x8000) / 15;
REG_RMW_FIELD(ah, AR_AN_SYNTH9,
AR_AN_SYNTH9_REFDIVA, refDivA);
+
}
+
if (!fracMode) {
ndiv = (freq * (refDivA >> aModeRefSel)) / 60;
channelSel = ndiv & 0x1ff;