Commit 144a96f7 authored by Prashant Malani's avatar Prashant Malani Committed by Greg Kroah-Hartman
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usb: typec: mux: Allow muxes to specify mode-switch 



Loosen the typec_mux_match() requirements so that searches where an
alt mode is not specified, but the target mux device lists the
"mode-switch" property, return a success.

This is helpful in Type C port drivers which would like to get a pointer
to the mux switch associated with a Type C port, but don't want to
specify a particular alt mode.

Signed-off-by: default avatarPrashant Malani <pmalani@chromium.org>
Reviewed-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: default avatarNícolas F. R. A. Prado <nfraprado@collabora.com>
Tested-by: default avatarNícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20220615172129.1314056-2-pmalani@chromium.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d9be8d5c

drivers/usb/typec/mux.c

+6 −2
Original line number Diff line number Diff line
@@ -281,9 +281,13 @@ static void *typec_mux_match(struct fwnode_handle *fwnode, const char *id, 
	if (match)

		goto find_mux;



	/* Accessory Mode muxes */

	if (!desc) {

		match = fwnode_property_present(fwnode, "accessory");

		/*

		 * Accessory Mode muxes & muxes which explicitly specify

		 * the required identifier can avoid SVID matching.

		 */

		match = fwnode_property_present(fwnode, "accessory") ||

			fwnode_property_present(fwnode, id);

		if (match)

			goto find_mux;

		return NULL;