linux-kernel - [PATCH 03/12] soc: qcom: wcnss_ctrl: make use of QCOM_FW

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Date: Tue, 21 May 2024 12:45:23 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, 
 Loic Poulain <loic.poulain@...aro.org>, Kalle Valo <kvalo@...nel.org>, 
 Mathieu Poirier <mathieu.poirier@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 wcn36xx@...ts.infradead.org, linux-wireless@...r.kernel.org, 
 linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org, 
 Arnd Bergmann <arnd@...db.de>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH 03/12] soc: qcom: wcnss_ctrl: make use of QCOM_FW_HELPER

Make the driver use qcom_fw_helper to autodetect the path to the
calibration data file.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 drivers/soc/qcom/Kconfig      | 1 +
 drivers/soc/qcom/wcnss_ctrl.c | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
index b663774d65f8..3af3f15175e4 100644
--- a/drivers/soc/qcom/Kconfig
+++ b/drivers/soc/qcom/Kconfig
@@ -238,6 +238,7 @@ config QCOM_WCNSS_CTRL
 	tristate "Qualcomm WCNSS control driver"
 	depends on ARCH_QCOM || COMPILE_TEST
 	depends on RPMSG
+	select QCOM_FW_HELPER
 	help
 	  Client driver for the WCNSS_CTRL SMD channel, used to download nv
 	  firmware to a newly booted WCNSS chip.
diff --git a/drivers/soc/qcom/wcnss_ctrl.c b/drivers/soc/qcom/wcnss_ctrl.c
index 148bcbac332d..7d1a4536226a 100644
--- a/drivers/soc/qcom/wcnss_ctrl.c
+++ b/drivers/soc/qcom/wcnss_ctrl.c
@@ -12,6 +12,7 @@
 #include <linux/platform_device.h>
 #include <linux/rpmsg.h>
 #include <linux/soc/qcom/wcnss_ctrl.h>
+#include <linux/soc/qcom/fw_helper.h>
 
 #define WCNSS_REQUEST_TIMEOUT	(5 * HZ)
 #define WCNSS_CBC_TIMEOUT	(10 * HZ)
@@ -214,11 +215,19 @@ static int wcnss_download_nv(struct wcnss_ctrl *wcnss, bool *expect_cbc)
 	if (ret < 0 && ret != -EINVAL)
 		goto free_req;
 
+	nvbin = qcom_get_board_fw(nvbin);
+	if (!nvbin) {
+		ret = -ENOMEM;
+		goto free_req;
+	}
+
 	ret = request_firmware(&fw, nvbin, dev);
 	if (ret < 0) {
 		dev_err(dev, "Failed to load nv file %s: %d\n", nvbin, ret);
+		kfree(nvbin);
 		goto free_req;
 	}
+	kfree(nvbin);
 
 	data = fw->data;
 	left = fw->size;

-- 
2.39.2