[PATCH v3 03/14] mux: core: Add of_mux_control_get helper function

[Hans de Goede]

Currently the mux_control_get implementation only deals with getting
mux controllers on DT platforms. This commit renames the current
implementation to of_mux_control_get to reflect this and makes
mux_control_get a wrapper around of_mux_control_get.

This is a preparation patch for adding support for getting muxes on
non DT platforms.

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
 drivers/mux/core.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/mux/core.c b/drivers/mux/core.c
index d0ad56abca2a..8c0a4c83cdc5 100644
--- a/drivers/mux/core.c
+++ b/drivers/mux/core.c
@@ -439,7 +439,7 @@ static struct mux_chip *of_find_mux_chip_by_node(struct device_node *np)
 }
 
 static struct mux_control *
-__mux_control_get(struct device *dev, const char *mux_name, bool optional)
+of_mux_control_get(struct device *dev, const char *mux_name, bool optional)
 {
 	struct device_node *np = dev->of_node;
 	struct of_phandle_args args;
@@ -500,6 +500,16 @@ __mux_control_get(struct device *dev, const char *mux_name, bool optional)
 	return &mux_chip->mux[controller];
 }
 
+static struct mux_control *
+__mux_control_get(struct device *dev, const char *mux_name, bool optional)
+{
+	/* look up via DT first */
+	if (IS_ENABLED(CONFIG_OF) && dev->of_node)
+		return of_mux_control_get(dev, mux_name, optional);
+
+	return optional ? NULL : ERR_PTR(-ENODEV);
+}
+
 /**
  * mux_control_get() - Get the mux-control for a device.
  * @dev: The device that needs a mux-control.
-- 
2.14.1