ath9k_hw: add support for parsing PA predistortion related EEPROM fields

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

5 files changed, 18 insertions, 5 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 23eb60ea545..343c9a427ac 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -67,6 +67,7 @@ static const struct ar9300_eeprom ar9300_default = {
                   * bit2 - enable fastClock - enabled
                   * bit3 - enable doubling - enabled
                   * bit4 - enable internal regulator - disabled
+                  * bit5 - enable pa predistortion - disabled
                   */
                 .miscConfiguration = 0, /* bit0 - turn down drivestrength */
                 .eepromWriteEnableGpio = 3,
@@ -129,9 +130,11 @@ static const struct ar9300_eeprom ar9300_default = {
                 .txEndToRxOn = 0x2,
                 .txFrameToXpaOn = 0xe,
                 .thresh62 = 28,
-                .futureModal = { /* [32] */
+                .papdRateMaskHt20 = LE32(0x80c080),
+                .papdRateMaskHt40 = LE32(0x80c080),
+                .futureModal = {
                         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-                        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+                        0, 0, 0, 0, 0, 0, 0, 0
                 },
          },
         .calFreqPier2G = {
@@ -326,9 +329,11 @@ static const struct ar9300_eeprom ar9300_default = {
                 .txEndToRxOn = 0x2,
                 .txFrameToXpaOn = 0xe,
                 .thresh62 = 28,
+                .papdRateMaskHt20 = LE32(0xf0e0e0),
+                .papdRateMaskHt40 = LE32(0xf0e0e0),
                 .futureModal = {
                         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-                        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+                        0, 0, 0, 0, 0, 0, 0, 0
                 },
          },
         .calFreqPier5G = {
@@ -644,6 +649,8 @@ static u32 ath9k_hw_ar9300_get_eeprom(struct ath_hw *ah,
                 return (pBase->featureEnable & 0x10) >> 4;
         case EEP_SWREG:
                 return le32_to_cpu(pBase->swreg);
+        case EEP_PAPRD:
+                return !!(pBase->featureEnable & BIT(5));
         default:
                 return 0;
         }
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h
index 23fb353c3bb..3c533bb983c 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.h
@@ -234,7 +234,9 @@ struct ar9300_modal_eep_header {
         u8 txEndToRxOn;
         u8 txFrameToXpaOn;
         u8 thresh62;
-        u8 futureModal[32];
+        __le32 papdRateMaskHt20;
+        __le32 papdRateMaskHt40;
+        u8 futureModal[24];
 } __packed;
 
 struct ar9300_cal_data_per_freq_op_loop {
diff --git a/drivers/net/wireless/ath/ath9k/eeprom.h b/drivers/net/wireless/ath/ath9k/eeprom.h
index 7da7d73c084..bdd8aa054b8 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom.h
+++ b/drivers/net/wireless/ath/ath9k/eeprom.h
@@ -263,7 +263,8 @@ enum eeprom_param {
         EEP_PWR_TABLE_OFFSET,
         EEP_DRIVE_STRENGTH,
         EEP_INTERNAL_REGULATOR,
-        EEP_SWREG
+        EEP_SWREG,
+        EEP_PAPRD,
 };
 
 enum ar5416_rates {
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 83e04613f78..5a2e72aaf49 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2235,6 +2235,8 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
                 pCap->rx_status_len = sizeof(struct ar9003_rxs);
                 pCap->tx_desc_len = sizeof(struct ar9003_txc);
                 pCap->txs_len = sizeof(struct ar9003_txs);
+                if (ah->eep_ops->get_eeprom(ah, EEP_PAPRD))
+                        pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
         } else {
                 pCap->tx_desc_len = sizeof(struct ath_desc);
                 if (AR_SREV_9280_20(ah) &&
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 09dd7be549a..9d092168855 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -200,6 +200,7 @@ enum ath9k_hw_caps {
         ATH9K_HW_CAP_LDPC                       = BIT(19),
         ATH9K_HW_CAP_FASTCLOCK                  = BIT(20),
         ATH9K_HW_CAP_SGI_20                     = BIT(21),
+        ATH9K_HW_CAP_PAPRD                      = BIT(22),
 };
 
 enum ath9k_capability_type {