linux-kernel - [PATCH v4 2/3] usb: typec: change altmode SVID to u16 entry

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Message-ID: <20231204020303.2287338-3-dmitry.baryshkov@linaro.org>
Date:   Mon,  4 Dec 2023 04:03:01 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     "Rob Herring" <robh+dt@...nel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        "Conor Dooley" <conor+dt@...nel.org>,
        "Andy Gross" <agross@...nel.org>,
        "Bjorn Andersson" <andersson@...nel.org>,
        "Konrad Dybcio" <konrad.dybcio@...aro.org>,
        "Hans de Goede" <hdegoede@...hat.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        "Mark Gross" <markgross@...nel.org>,
        "Heikki Krogerus" <heikki.krogerus@...ux.intel.com>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: [PATCH v4 2/3] usb: typec: change altmode SVID to u16 entry

As stated in the changelog for the commit 7b458a4c5d73 ("usb: typec: Add
typec_port_register_altmodes()"), the code should be adjusted according
to the AltMode bindings. As the SVID is 16 bits wide (according to the
USB PD Spec), use fwnode_property_read_u16() to read it.

Acked-by: Hans de Goede <hdegoede@...hat.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 drivers/platform/x86/intel/chtwc_int33fe.c | 2 +-
 drivers/usb/typec/class.c                  | 5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/intel/chtwc_int33fe.c b/drivers/platform/x86/intel/chtwc_int33fe.c
index 848baecc1bb0..93f75ba1dafd 100644
--- a/drivers/platform/x86/intel/chtwc_int33fe.c
+++ b/drivers/platform/x86/intel/chtwc_int33fe.c
@@ -136,7 +136,7 @@ static const struct software_node altmodes_node = {
 };
 
 static const struct property_entry dp_altmode_properties[] = {
-	PROPERTY_ENTRY_U32("svid", 0xff01),
+	PROPERTY_ENTRY_U16("svid", 0xff01),
 	PROPERTY_ENTRY_U32("vdo", 0x0c0086),
 	{ }
 };
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index 2e0451bd336e..a959dcc3374a 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -2230,7 +2230,8 @@ void typec_port_register_altmodes(struct typec_port *port,
 	struct typec_altmode_desc desc;
 	struct typec_altmode *alt;
 	size_t index = 0;
-	u32 svid, vdo;
+	u16 svid;
+	u32 vdo;
 	int ret;
 
 	altmodes_node = device_get_named_child_node(&port->dev, "altmodes");
@@ -2238,7 +2239,7 @@ void typec_port_register_altmodes(struct typec_port *port,
 		return; /* No altmodes specified */
 
 	fwnode_for_each_child_node(altmodes_node, child) {
-		ret = fwnode_property_read_u32(child, "svid", &svid);
+		ret = fwnode_property_read_u16(child, "svid", &svid);
 		if (ret) {
 			dev_err(&port->dev, "Error reading svid for altmode %s\n",
 				fwnode_get_name(child));
-- 
2.42.0