linux-kernel - [PATCH 1/9] usb: typec: mux: Allow the muxes to be named

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Message-Id: <20200213132428.53374-2-heikki.krogerus@linux.intel.com>
Date:   Thu, 13 Feb 2020 16:24:20 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Benson Leung <bleung@...omium.org>,
        Prashant Malani <pmalani@...omium.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: [PATCH 1/9] usb: typec: mux: Allow the muxes to be named

The mux devices have been named by using the name of the
parent device as base until now, but if for example the
parent device controls multiple muxes, that will not work.
This makes it possible to supply the name for a mux during
registration.

Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
---
 drivers/usb/typec/mux.c       | 6 ++++--
 include/linux/usb/typec_mux.h | 2 ++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c
index 5baf0f416c73..3a9970d1d1c0 100644
--- a/drivers/usb/typec/mux.c
+++ b/drivers/usb/typec/mux.c
@@ -137,7 +137,8 @@ typec_switch_register(struct device *parent,
 	sw->dev.class = &typec_mux_class;
 	sw->dev.type = &typec_switch_dev_type;
 	sw->dev.driver_data = desc->drvdata;
-	dev_set_name(&sw->dev, "%s-switch", dev_name(parent));
+	dev_set_name(&sw->dev, "%s-switch",
+		     desc->name ? desc->name : dev_name(parent));
 
 	ret = device_add(&sw->dev);
 	if (ret) {
@@ -326,7 +327,8 @@ typec_mux_register(struct device *parent, const struct typec_mux_desc *desc)
 	mux->dev.class = &typec_mux_class;
 	mux->dev.type = &typec_mux_dev_type;
 	mux->dev.driver_data = desc->drvdata;
-	dev_set_name(&mux->dev, "%s-mux", dev_name(parent));
+	dev_set_name(&mux->dev, "%s-mux",
+		     desc->name ? desc->name : dev_name(parent));
 
 	ret = device_add(&mux->dev);
 	if (ret) {
diff --git a/include/linux/usb/typec_mux.h b/include/linux/usb/typec_mux.h
index be7292c0be5e..47ab5a828b07 100644
--- a/include/linux/usb/typec_mux.h
+++ b/include/linux/usb/typec_mux.h
@@ -17,6 +17,7 @@ typedef int (*typec_switch_set_fn_t)(struct typec_switch *sw,
 struct typec_switch_desc {
 	struct fwnode_handle *fwnode;
 	typec_switch_set_fn_t set;
+	const char *name;
 	void *drvdata;
 };
 
@@ -42,6 +43,7 @@ typedef int (*typec_mux_set_fn_t)(struct typec_mux *mux,
 struct typec_mux_desc {
 	struct fwnode_handle *fwnode;
 	typec_mux_set_fn_t set;
+	const char *name;
 	void *drvdata;
 };
 
-- 
2.25.0