can someone just verify what the rcChainMask value is in the eeprom header?
adrian
On 19 July 2011 14:46, Felix Fietkau <nbd@xxxxxxxxxxx> wrote:
> Some devices (e.g. Ubiquiti AirRouter) ship with broken EEPROM chainmask
> data, which breaks the initial calibration after a hardware reset.
> To fix this, mask the eeprom chainmask with the chainmask of the chip,
> and use the chip chainmask if the result is zero.
>
> Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
> ---
> drivers/net/wireless/ath/ath9k/hw.c | 22 ++++++++++++++++++++++
> 1 files changed, 22 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
> index 2a5f908..8006ce0 100644
> --- a/drivers/net/wireless/ath/ath9k/hw.c
> +++ b/drivers/net/wireless/ath/ath9k/hw.c
> @@ -1997,12 +1997,22 @@ EXPORT_SYMBOL(ath9k_hw_set_sta_beacon_timers);
> /* HW Capabilities */
> /*******************/
>
> +static u8 fixup_chainmask(u8 chip_chainmask, u8 eeprom_chainmask)
> +{
> + eeprom_chainmask &= chip_chainmask;
> + if (eeprom_chainmask)
> + return eeprom_chainmask;
> + else
> + return chip_chainmask;
> +}
> +
> int ath9k_hw_fill_cap_info(struct ath_hw *ah)
> {
> struct ath9k_hw_capabilities *pCap = &ah->caps;
> struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah);
> struct ath_common *common = ath9k_hw_common(ah);
> struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
> + unsigned int chip_chainmask;
>
> u16 eeval;
> u8 ant_div_ctl1, tx_chainmask, rx_chainmask;
> @@ -2039,6 +2049,15 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
> if (eeval & AR5416_OPFLAGS_11G)
> pCap->hw_caps |= ATH9K_HW_CAP_2GHZ;
>
> + if (AR_SREV_9485(ah) || AR_SREV_9285(ah) || AR_SREV_9330(ah))
> + chip_chainmask = 1;
> + else if (!AR_SREV_9280_20_OR_LATER(ah))
> + chip_chainmask = 7;
> + else if (!AR_SREV_9300_20_OR_LATER(ah) || AR_SREV_9340(ah))
> + chip_chainmask = 3;
> + else
> + chip_chainmask = 7;
> +
> pCap->tx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_TX_MASK);
> /*
> * For AR9271 we will temporarilly uses the rx chainmax as read from
> @@ -2055,6 +2074,9 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
> /* Use rx_chainmask from EEPROM. */
> pCap->rx_chainmask = ah->eep_ops->get_eeprom(ah, EEP_RX_MASK);
>
> + pCap->tx_chainmask = fixup_chainmask(chip_chainmask, pCap->tx_chainmask);
> + pCap->rx_chainmask = fixup_chainmask(chip_chainmask, pCap->rx_chainmask);
> +
> ah->misc_mode |= AR_PCU_MIC_NEW_LOC_ENA;
>
> /* enable key search for every frame in an aggregate */
> --
> 1.7.3.2
>
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