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From:   Wen Gong <quic_wgong@quicinc.com>
To:     <ath11k@lists.infradead.org>
CC:     <linux-wireless@vger.kernel.org>, <quic_wgong@quicinc.com>
Subject: [PATCH 13/15] ath11k: discard BSS_CHANGED_TXPOWER when EXT_TPC_REG_SUPPORT for 6 GHz
Date:   Tue, 26 Oct 2021 07:19:11 -0400
Message-ID: <20211026111913.7346-14-quic_wgong@quicinc.com>
In-Reply-To: <20211026111913.7346-1-quic_wgong@quicinc.com>
References: <20211026111913.7346-1-quic_wgong@quicinc.com>
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When station is connected to a 6 GHz AP, it has 2 way to configure
the power limit to firmware. The first way is to send 2 wmi command
WMI_PDEV_PARAM_TXPOWER_LIMIT2G/WMI_PDEV_PARAM_TXPOWER_LIMIT5G to
firmware, the second way is to send WMI_VDEV_SET_TPC_POWER_CMDID to
firmware which include more parameters for power control.

When firmware support SERVICE_EXT_TPC_REG, it means firmware support
the second way for WMI_VDEV_SET_TPC_POWER_CMDID, then ath11k discard
BSS_CHANGED_TXPOWER flag from mac80211 which is used to the first way
for 6 GHz band in this patch and select the second way in the subsequent
patch.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1

Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
---
 drivers/net/wireless/ath/ath11k/core.h |  6 ++++++
 drivers/net/wireless/ath/ath11k/mac.c  | 19 +++++++++++++++++--
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 6969e0a6fc7b..6ef639975725 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -1017,4 +1017,10 @@ static inline bool ath11k_support_6G_cc_ext(struct ath11k *ar)
 	return ath11k_support_cc_ext(ar->ab) && ar->supports_6ghz;
 }
 
+static inline bool ath11k_support_tpc_ext(struct ath11k *ar)
+{
+	return ath11k_support_6G_cc_ext(ar) &&
+	       test_bit(WMI_TLV_SERVICE_EXT_TPC_REG_SUPPORT, ar->ab->wmi_ab.svc_map);
+}
+
 #endif /* _CORE_H_ */
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index ed2dc4c81de8..301e08a85f47 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -2170,6 +2170,16 @@ static int ath11k_mac_config_obss_pd(struct ath11k *ar,
 	return 0;
 }
 
+static bool ath11k_mac_station_support_tpc(struct ath11k *ar,
+					   struct ath11k_vif *arvif,
+					   struct cfg80211_chan_def *chandef)
+{
+	return ath11k_support_tpc_ext(ar) &&
+	       arvif->vdev_type == WMI_VDEV_TYPE_STA &&
+	       chandef->chan &&
+	       chandef->chan->band == NL80211_BAND_6GHZ;
+}
+
 static void ath11k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
 					   struct ieee80211_vif *vif,
 					   struct ieee80211_bss_conf *info,
@@ -2353,8 +2363,13 @@ static void ath11k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
 		ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac vdev_id %i txpower %d\n",
 			   arvif->vdev_id, info->txpower);
 
-		arvif->txpower = info->txpower;
-		ath11k_mac_txpower_recalc(ar);
+		if (ath11k_mac_station_support_tpc(ar, arvif, &info->chandef)) {
+			ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
+				   "discard tx power, change to set TPC power\n");
+		} else {
+			arvif->txpower = info->txpower;
+			ath11k_mac_txpower_recalc(ar);
+		}
 	}
 
 	if (changed & BSS_CHANGED_MCAST_RATE &&
-- 
2.31.1