linux-kernel - [PATCH 2/2] wifi: ath11k: add firmware-name device tree property

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Message-ID: <20241001033053.2084360-3-quic_miaoqing@quicinc.com>
Date: Tue, 1 Oct 2024 11:30:52 +0800
From: Miaoqing Pan <quic_miaoqing@...cinc.com>
To: <kvalo@...nel.org>
CC: <quic_jjohnson@...cinc.com>, <ath11k@...ts.infradead.org>,
        <linux-wireless@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Miaoqing Pan <quic_miaoqing@...cinc.com>
Subject: [PATCH 2/2] wifi: ath11k: add firmware-name device tree property

QCA6698AQ uses different firmware/bdf/regdb with existing WCN6855
firmware, which is customized for IoE platforms. And the 'pci-device-id +
soc-hw-version + soc-hw-sub-version' may not be enough to identify the
correct firmware directory path.

The device tree allows "firmware-name" to define the firmware path,
    wifi@...0000 {
        firmware-name = "QCA6698AQ";
        status = "okay";
    };

Tested-on: QCA6698AQ hw2.1 PCI WLAN.HSP.1.1-04402-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1

Signed-off-by: Miaoqing Pan <quic_miaoqing@...cinc.com>
---
 drivers/net/wireless/ath/ath11k/core.c | 12 ++++++++++++
 drivers/net/wireless/ath/ath11k/core.h | 11 +++--------
 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index be67382c00f6..7720f467b11b 100644
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -1178,6 +1178,18 @@ static int ath11k_core_create_chip_id_board_name(struct ath11k_base *ab, char *n
 					       ATH11K_BDF_NAME_CHIP_ID);
 }
 
+void ath11k_core_create_firmware_path(struct ath11k_base *ab,
+				      const char *filename,
+				      void *buf, size_t buf_len)
+{	const char *variant = NULL;
+
+	of_property_read_string(ab->dev->of_node, "firmware-name", &variant);
+
+	snprintf(buf, buf_len, "%s/%s/%s", ATH11K_FW_DIR,
+		 variant ? : ab->hw_params.fw.dir, filename);
+}
+EXPORT_SYMBOL(ath11k_core_create_firmware_path);
+
 const struct firmware *ath11k_core_firmware_request(struct ath11k_base *ab,
 						    const char *file)
 {
diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 09c37e19a168..ce4102cfed4d 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -1249,6 +1249,9 @@ bool ath11k_core_coldboot_cal_support(struct ath11k_base *ab);
 
 const struct firmware *ath11k_core_firmware_request(struct ath11k_base *ab,
 						    const char *filename);
+void ath11k_core_create_firmware_path(struct ath11k_base *ab,
+				      const char *filename,
+				      void *buf, size_t buf_len);
 
 static inline const char *ath11k_scan_state_str(enum ath11k_scan_state state)
 {
@@ -1295,14 +1298,6 @@ static inline struct ath11k *ath11k_ab_to_ar(struct ath11k_base *ab,
 	return ab->pdevs[ath11k_hw_mac_id_to_pdev_id(&ab->hw_params, mac_id)].ar;
 }
 
-static inline void ath11k_core_create_firmware_path(struct ath11k_base *ab,
-						    const char *filename,
-						    void *buf, size_t buf_len)
-{
-	snprintf(buf, buf_len, "%s/%s/%s", ATH11K_FW_DIR,
-		 ab->hw_params.fw.dir, filename);
-}
-
 static inline const char *ath11k_bus_str(enum ath11k_bus bus)
 {
 	switch (bus) {
-- 
2.25.1