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ath9k: allow disabling bands via platform data

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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>
This commit is contained in:
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);