linux-kernel - [PATCH] remoteproc: qcom: wcnss: Allow specifying firmware-name

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Date:   Tue,  7 Jan 2020 21:52:52 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] remoteproc: qcom: wcnss: Allow specifying firmware-name

Introduce a firmware-name property, in order to be able to support
device/platform specific firmware for the wireless connectivity
subsystem; in line with other Qualcomm remoteproc drivers.

Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---
 .../devicetree/bindings/remoteproc/qcom,wcnss-pil.txt     | 6 ++++++
 drivers/remoteproc/qcom_wcnss.c                           | 8 +++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,wcnss-pil.txt b/Documentation/devicetree/bindings/remoteproc/qcom,wcnss-pil.txt
index d420f84ddfb0..00844a5d2ccf 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,wcnss-pil.txt
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,wcnss-pil.txt
@@ -34,6 +34,12 @@ on the Qualcomm WCNSS core.
 	Definition: should be "wdog", "fatal", optionally followed by "ready",
 		    "handover", "stop-ack"
 
+- firmware-name:
+	Usage: optional
+	Value type: <string>
+	Definition: must list the relative firmware image path for the
+		    WCNSS core.
+
 - vddmx-supply:
 - vddcx-supply:
 - vddpx-supply:
diff --git a/drivers/remoteproc/qcom_wcnss.c b/drivers/remoteproc/qcom_wcnss.c
index dc135754bb9c..a0468b3cc76f 100644
--- a/drivers/remoteproc/qcom_wcnss.c
+++ b/drivers/remoteproc/qcom_wcnss.c
@@ -457,6 +457,7 @@ static int wcnss_alloc_memory_region(struct qcom_wcnss *wcnss)
 
 static int wcnss_probe(struct platform_device *pdev)
 {
+	const char *fw_name = WCNSS_FIRMWARE_NAME;
 	const struct wcnss_data *data;
 	struct qcom_wcnss *wcnss;
 	struct resource *res;
@@ -474,8 +475,13 @@ static int wcnss_probe(struct platform_device *pdev)
 		return -ENXIO;
 	}
 
+	ret = of_property_read_string(pdev->dev.of_node, "firmware-name",
+				      &fw_name);
+	if (ret < 0 && ret != -EINVAL)
+		return ret;
+
 	rproc = rproc_alloc(&pdev->dev, pdev->name, &wcnss_ops,
-			    WCNSS_FIRMWARE_NAME, sizeof(*wcnss));
+			    fw_name, sizeof(*wcnss));
 	if (!rproc) {
 		dev_err(&pdev->dev, "unable to allocate remoteproc\n");
 		return -ENOMEM;
-- 
2.24.0