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authorFelix Fietkau <nbd@openwrt.org>2014-10-25 19:19:34 +0400
committerJohn W. Linville <linville@tuxdriver.com>2014-10-27 21:16:19 +0300
commit3468968ef766d7bb4ab29c0ef7ebd169a4ac2e96 (patch)
tree025c8015b7fbea7b55484cefcbf307bc33368a17
parenta59dadbeeaf7d33f2e92dbf5a290965d6df64162 (diff)
downloadlinux-3468968ef766d7bb4ab29c0ef7ebd169a4ac2e96.tar.xz
ath9k: allow disabling bands via platform data
Some devices have multiple bands enables in the EEPROM data, even though they are only calibrated for one. Allow platform data to disable unsupported bands. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath/ath9k/hw.c24
-rw-r--r--drivers/net/wireless/ath/ath9k/hw.h2
-rw-r--r--drivers/net/wireless/ath/ath9k/init.c2
-rw-r--r--include/linux/ath9k_platform.h2
4 files changed, 22 insertions, 8 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 85a78176b809..47f410ed7cd4 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2344,17 +2344,25 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
}
eeval = ah->eep_ops->get_eeprom(ah, EEP_OP_MODE);
- if ((eeval & (AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A)) == 0) {
- ath_err(common,
- "no band has been marked as supported in EEPROM\n");
- return -EINVAL;
+
+ if (eeval & AR5416_OPFLAGS_11A) {
+ if (ah->disable_5ghz)
+ ath_warn(common, "disabling 5GHz band\n");
+ else
+ pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
}
- if (eeval & AR5416_OPFLAGS_11A)
- pCap->hw_caps |= ATH9K_HW_CAP_5GHZ;
+ if (eeval & AR5416_OPFLAGS_11G) {
+ if (ah->disable_2ghz)
+ ath_warn(common, "disabling 2GHz band\n");
+ else
+ pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
+ }
- if (eeval & AR5416_OPFLAGS_11G)
- pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
+ if ((pCap->hw_caps & (ATH9K_HW_CAP_2GHZ | ATH9K_HW_CAP_5GHZ)) == 0) {
+ ath_err(common, "both bands are disabled\n");
+ return -EINVAL;
+ }
if (AR_SREV_9485(ah) ||
AR_SREV_9285(ah) ||
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index c6dba9b4afdf..e49721e85f6a 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -930,6 +930,8 @@ struct ath_hw {
bool is_clk_25mhz;
int (*get_mac_revision)(void);
int (*external_reset)(void);
+ bool disable_2ghz;
+ bool disable_5ghz;
const struct firmware *eeprom_blob;
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 5d9c711b6aa0..2294109f79e9 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -531,6 +531,8 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
ah->is_clk_25mhz = pdata->is_clk_25mhz;
ah->get_mac_revision = pdata->get_mac_revision;
ah->external_reset = pdata->external_reset;
+ ah->disable_2ghz = pdata->disable_2ghz;
+ ah->disable_5ghz = pdata->disable_5ghz;
if (!pdata->endian_check)
ah->ah_flags |= AH_NO_EEP_SWAP;
}
diff --git a/include/linux/ath9k_platform.h b/include/linux/ath9k_platform.h
index 43501657bce9..33eb274cd0e6 100644
--- a/include/linux/ath9k_platform.h
+++ b/include/linux/ath9k_platform.h
@@ -34,6 +34,8 @@ struct ath9k_platform_data {
bool endian_check;
bool is_clk_25mhz;
bool tx_gain_buffalo;
+ bool disable_2ghz;
+ bool disable_5ghz;
int (*get_mac_revision)(void);
int (*external_reset)(void);