[ath9k-devel] [PATCH v2] ath9k_htc: add STBC TX support

[Oleksij Rempel <linux@rempel-privat.de>]

I forgot to CC one of ATH9K maintainers.
I hope Jouni or Senthil have time for it.


Am 04.05.2013 09:33, schrieb Oleksij Rempel:
> current firmware will enable STBC_TX, only if other peer support it.
> This patch provide ht_peer_caps to firmware.
> FW versions 1.3, 1.4 should be able to work with it.
> Tested on ar7010+ar9280 and ar7010+ar9287.
>
> - v2. Use one bit instead of two for RX STBC flags.
>
> Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
> ---
>   drivers/net/wireless/ath/ath9k/htc.h          | 3 +++
>   drivers/net/wireless/ath/ath9k/htc_drv_init.c | 3 +++
>   drivers/net/wireless/ath/ath9k/htc_drv_main.c | 4 ++++
>   3 files changed, 10 insertions(+)
>
> diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
> index d3b099d..037e9b8 100644
> --- a/drivers/net/wireless/ath/ath9k/htc.h
> +++ b/drivers/net/wireless/ath/ath9k/htc.h
> @@ -142,6 +142,9 @@ struct ath9k_htc_target_aggr {
>   #define WLAN_RC_40_FLAG  0x02
>   #define WLAN_RC_SGI_FLAG 0x04
>   #define WLAN_RC_HT_FLAG  0x08
> +#define WLAN_RC_TX_STBC_FLAG 0x20 /* TX STBC */
> +/* RX STBC. Warning! FW checks for 0xC0. But we support only 1 stream anyway */
> +#define WLAN_RC_RX_STBC_FLAG 0x40
>
>   struct ath9k_htc_rateset {
>   	u8 rs_nrates;
> diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
> index a47f5e0..c79c5ac 100644
> --- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
> +++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
> @@ -517,6 +517,9 @@ static void setup_ht_cap(struct ath9k_htc_priv *priv,
>   	ath_dbg(common, CONFIG, "TX streams %d, RX streams: %d\n",
>   		tx_streams, rx_streams);
>
> +	if (tx_streams >= 2)
> +		ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
> +
>   	if (tx_streams != rx_streams) {
>   		ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
>   		ht_info->mcs.tx_params |= ((tx_streams - 1) <<
> diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
> index 0743a47..af08b4a 100644
> --- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
> +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
> @@ -623,6 +623,10 @@ static void ath9k_htc_setup_rate(struct ath9k_htc_priv *priv,
>   		trate->rates.ht_rates.rs_nrates = j;
>
>   		caps = WLAN_RC_HT_FLAG;
> +		if (sta->ht_cap.cap & IEEE80211_HT_CAP_RX_STBC)
> +			caps |= WLAN_RC_RX_STBC_FLAG;
> +		if (sta->ht_cap.cap & IEEE80211_HT_CAP_TX_STBC)
> +			caps |= WLAN_RC_TX_STBC_FLAG;
>   		if (sta->ht_cap.mcs.rx_mask[1])
>   			caps |= WLAN_RC_DS_FLAG;
>   		if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
>


-- 
Regards,
Oleksij