ath9k: Fix rd_ext EEPROM capability for AR9285

AR9285 chipsets have a different EEPROM layout,
handle this appropriately when populating the rd_ext
capability.

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

2 files changed, 14 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath9k/eeprom.h b/drivers/net/wireless/ath9k/eeprom.h
index b7c656c84ba3..5c0d6c339fe9 100644
--- a/drivers/net/wireless/ath9k/eeprom.h
+++ b/drivers/net/wireless/ath9k/eeprom.h
@@ -78,6 +78,18 @@
 #define INCREASE_MAXPOW_BY_TWO_CHAIN     6  /* 10*log10(2)*2 */
 #define INCREASE_MAXPOW_BY_THREE_CHAIN   10 /* 10*log10(3)*2 */
 
+/*
+ * For AR9285 and later chipsets, the following bits are not being programmed
+ * in EEPROM and so need to be enabled always.
+ *
+ * Bit 0: en_fcc_mid
+ * Bit 1: en_jap_mid
+ * Bit 2: en_fcc_dfs_ht40
+ * Bit 3: en_jap_ht40
+ * Bit 4: en_jap_dfs_ht40
+ */
+#define AR9285_RDEXT_DEFAULT    0x1F
+
 #define AR_EEPROM_MAC(i)        (0x1d+(i))
 #define ATH9K_POW_SM(_r, _s)    (((_r) & 0x3f) << (_s))
 #define FREQ2FBIN(x, y)         ((y) ? ((x) - 2300) : (((x) - 4800) / 5))
diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c
index cad8e39c201e..55d5a7440942 100644
--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -3128,10 +3128,11 @@ bool ath9k_hw_fill_cap_info(struct ath_hw *ah)
         u16 capField = 0, eeval;
 
         eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_0);
-
         ah->regulatory.current_rd = eeval;
 
         eeval = ah->eep_ops->get_eeprom(ah, EEP_REG_1);
+        if (AR_SREV_9285_10_OR_LATER(ah))
+                eeval |= AR9285_RDEXT_DEFAULT;
         ah->regulatory.current_rd_ext = eeval;
 
         capField = ah->eep_ops->get_eeprom(ah, EEP_OP_CAP);