linux-kernel - [PATCH 2/3] usb: typec: Add wrapper for bus switch set code

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Message-Id: <20230112221609.540754-3-pmalani@chromium.org>
Date:   Thu, 12 Jan 2023 22:16:07 +0000
From:   Prashant Malani <pmalani@...omium.org>
To:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Cc:     bleung@...omium.org, heikki.krogerus@...ux.intel.com,
        Prashant Malani <pmalani@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 2/3] usb: typec: Add wrapper for bus switch set code

Add a wrapper that calls the set() function for various switches
associated with a port altmode.

Right now, it just wraps the existing typec_mux_set() command,
but it can be expanded to include other switches in future patches.

No functional changes introduced by this patch.

Signed-off-by: Prashant Malani <pmalani@...omium.org>
---
 drivers/usb/typec/bus.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/typec/bus.c b/drivers/usb/typec/bus.c
index 31c2a3130cad..9f1bbd26ca47 100644
--- a/drivers/usb/typec/bus.c
+++ b/drivers/usb/typec/bus.c
@@ -27,6 +27,13 @@ typec_altmode_set_mux(struct altmode *alt, unsigned long conf, void *data)
 	return typec_mux_set(alt->mux, &state);
 }
 
+/* Wrapper to set various Type-C port switches together. */
+static inline int
+typec_altmode_set_switches(struct altmode *alt, unsigned long conf, void *data)
+{
+	return typec_altmode_set_mux(alt, conf, data);
+}
+
 static int typec_altmode_set_state(struct typec_altmode *adev,
 				   unsigned long conf, void *data)
 {
@@ -35,7 +42,7 @@ static int typec_altmode_set_state(struct typec_altmode *adev,
 
 	port_altmode = is_port ? to_altmode(adev) : to_altmode(adev)->partner;
 
-	return typec_altmode_set_mux(port_altmode, conf, data);
+	return typec_altmode_set_switches(port_altmode, conf, data);
 }
 
 /* -------------------------------------------------------------------------- */
@@ -73,7 +80,7 @@ int typec_altmode_notify(struct typec_altmode *adev,
 	is_port = is_typec_port(adev->dev.parent);
 	partner = altmode->partner;
 
-	ret = typec_altmode_set_mux(is_port ? altmode : partner, conf, data);
+	ret = typec_altmode_set_switches(is_port ? altmode : partner, conf, data);
 	if (ret)
 		return ret;
 
-- 
2.39.0.314.g84b9a713c41-goog