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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>
hifive-unleashed-5.1
Felix Fietkau 2014-10-25 17:19:34 +02:00 committed by John W. Linville
parent a59dadbeea
commit 3468968ef7
4 changed files with 22 additions and 8 deletions
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24
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -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) ||

2
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -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;

2
drivers/net/wireless/ath/ath9k/init.c
View File

@ -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;
}

2
include/linux/ath9k_platform.h
View File

@ -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);