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ath10k: add a support of set_tsf on vdev interface

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10.2.4.70.24 firmware introduces new feature to set TSF
via vdev parameter, hence implement relevant function.
set_tsf function can be used to shift TBTT that will
help avoid its clockdrift which happens when beacons
are collided.

Signed-off-by: Peter Oh <poh@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Peter Oh
2016-04-04 16:19:14 -07:00
committed by Kalle Valo
parent 169ff6db3a
commit 9f0b7e7dea
4 changed files with 34 additions and 0 deletions
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27
drivers/net/wireless/ath/ath10k/mac.c
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@@ -6796,6 +6796,32 @@ static u64 ath10k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
return 0;
}
static void ath10k_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
u64 tsf)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
u32 tsf_offset, vdev_param = ar->wmi.vdev_param->set_tsf;
int ret;
/* Workaround:
*
* Given tsf argument is entire TSF value, but firmware accepts
* only TSF offset to current TSF.
*
* get_tsf function is used to get offset value, however since
* ath10k_get_tsf is not implemented properly, it will return 0 always.
* Luckily all the caller functions to set_tsf, as of now, also rely on
* get_tsf function to get entire tsf value such get_tsf() + tsf_delta,
* final tsf offset value to firmware will be arithmetically correct.
*/
tsf_offset = tsf - ath10k_get_tsf(hw, vif);
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
vdev_param, tsf_offset);
if (ret && ret != -EOPNOTSUPP)
ath10k_warn(ar, "failed to set tsf offset: %d\n", ret);
}
static int ath10k_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_ampdu_params *params)
@@ -7252,6 +7278,7 @@ static const struct ieee80211_ops ath10k_ops = {
.set_bitrate_mask = ath10k_mac_op_set_bitrate_mask,
.sta_rc_update = ath10k_sta_rc_update,
.get_tsf = ath10k_get_tsf,
.set_tsf = ath10k_set_tsf,
.ampdu_action = ath10k_ampdu_action,
.get_et_sset_count = ath10k_debug_get_et_sset_count,
.get_et_stats = ath10k_debug_get_et_stats,