linux-kernel - [PATCH ath-next 12/15] wifi: ath12k: save max transmit power in vdev start response event from firmware

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Message-ID: <20250418-ath12k-6g-lp-vlp-v1-12-c869c86cad60@quicinc.com>
Date: Fri, 18 Apr 2025 10:55:45 +0800
From: Baochen Qiang <quic_bqiang@...cinc.com>
To: Johannes Berg <johannes@...solutions.net>,
        Jeff Johnson
	<jjohnson@...nel.org>
CC: <linux-wireless@...r.kernel.org>, <ath12k@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Baochen Qiang <quic_bqiang@...cinc.com>
Subject: [PATCH ath-next 12/15] wifi: ath12k: save max transmit power in
 vdev start response event from firmware

Save the max transmit power received in the vdev start response event from
firmware. A subsequent patch will use this to calculate the final power

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Baochen Qiang <quic_bqiang@...cinc.com>
---
 drivers/net/wireless/ath/ath12k/core.h | 2 ++
 drivers/net/wireless/ath/ath12k/wmi.c  | 3 ++-
 drivers/net/wireless/ath/ath12k/wmi.h  | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 9f64fa00b131357c5c1b75f4eacae912f563416d..40fdc9cf3f8abbca4f60a36455e1344a1d63ddc9 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -786,6 +786,8 @@ struct ath12k {
 	u8 ftm_msgref;
 	struct ath12k_fw_stats fw_stats;
 	unsigned long last_tx_power_update;
+
+	s8 max_allowed_tx_power;
 };
 
 struct ath12k_hw {
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 385f59077050ce89aa9aab19b0ffc9af98e35549..6fa7cba35ab8f6d2420213c452a2722bed57b80a 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -6342,13 +6342,14 @@ static void ath12k_vdev_start_resp_event(struct ath12k_base *ab, struct sk_buff
 	ar->last_wmi_vdev_start_status = 0;
 
 	status = le32_to_cpu(vdev_start_resp.status);
-
 	if (WARN_ON_ONCE(status)) {
 		ath12k_warn(ab, "vdev start resp error status %d (%s)\n",
 			    status, ath12k_wmi_vdev_resp_print(status));
 		ar->last_wmi_vdev_start_status = status;
 	}
 
+	ar->max_allowed_tx_power = (s8)le32_to_cpu(vdev_start_resp.max_allowed_tx_power);
+
 	complete(&ar->vdev_setup_done);
 
 	rcu_read_unlock();
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 5f0f9f120497c5746ae9175c3fa9e119a61ab91c..e4d383c090a60461b1af4529c6d5ef2fa4a2f2e9 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -4162,6 +4162,7 @@ struct wmi_vdev_start_resp_event {
 	};
 	__le32 cfgd_tx_streams;
 	__le32 cfgd_rx_streams;
+	__le32 max_allowed_tx_power;
 } __packed;
 
 /* VDEV start response status codes */

-- 
2.34.1