linux-kernel - [PATCH v3 06/13] usb: typec: ucsi_ccg: Add cypress,firmware-build as a well-known regex

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Date:   Mon, 14 Nov 2022 20:40:46 +0800
From:   Wayne Chang <waynec@...dia.com>
To:     <gregkh@...uxfoundation.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <treding@...dia.com>,
        <jonathanh@...dia.com>, <thierry.reding@...il.com>,
        <heikki.krogerus@...ux.intel.com>, <ajayg@...dia.com>,
        <vkoul@...nel.org>, <p.zabel@...gutronix.de>, <balbi@...nel.org>,
        <mathias.nyman@...el.com>, <jckuo@...dia.com>
CC:     <waynec@...dia.com>, <linux-usb@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <singhanc@...dia.com>, <linux-i2c@...r.kernel.org>,
        <linux-phy@...ts.infradead.org>, <linux-tegra@...r.kernel.org>
Subject: [PATCH v3 06/13] usb: typec: ucsi_ccg: Add cypress,firmware-build as a well-known regex

ccgx is refer to the cypress cypd4226 typec controller.
add cypress,firmware-build as a well-known regex.

16-bit value is not sufficient for descriptiva names.
Using string instead of u16 to make it more descriptive.

Signed-off-by: Wayne Chang <waynec@...dia.com>
---
V2 -> V3:nothing has changed
V1 -> V2:new change added for adding cypress,firmware-build
 drivers/usb/typec/ucsi/ucsi_ccg.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c
index 139707a2f3d6..e412a457bbfc 100644
--- a/drivers/usb/typec/ucsi/ucsi_ccg.c
+++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
@@ -1343,6 +1343,7 @@ static int ucsi_ccg_probe(struct i2c_client *client,
 {
 	struct device *dev = &client->dev;
 	struct ucsi_ccg *uc;
+	const char *of_fw_build;
 	int status;
 
 	uc = devm_kzalloc(dev, sizeof(*uc), GFP_KERNEL);
@@ -1363,6 +1364,17 @@ static int ucsi_ccg_probe(struct i2c_client *client,
 	if (status)
 		dev_err(uc->dev, "failed to get FW build information\n");
 
+	status = device_property_read_string(dev, "cypress,firmware-build",
+					  &of_fw_build);
+	if (!status) {
+		if (!strcmp(of_fw_build, "nvidia,jetson-agx-xavier"))
+			uc->fw_build = CCG_FW_BUILD_NVIDIA_TEGRA;
+		else if (!strcmp(of_fw_build, "nvidia,gpu"))
+			uc->fw_build = CCG_FW_BUILD_NVIDIA;
+	} else {
+		dev_err(uc->dev, "failed to get FW build information\n");
+	}
+
 	/* reset ccg device and initialize ucsi */
 	status = ucsi_ccg_init(uc);
 	if (status < 0) {
-- 
2.25.1