Re: [PATCH v2 1/7] usb: typec: mux: Allow muxes to specify mode-switch

[Heikki Krogerus]

On Thu, Jun 09, 2022 at 06:09:40PM +0000, Prashant Malani wrote:
> 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: Prashant Malani <pmalani@xxxxxxxxxxxx>

Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>

> ---
> 
> Changes since v1:
> - No changes.
> 
>  drivers/usb/typec/mux.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c
> index fd55c2c516a5..464330776cd6 100644
> --- a/drivers/usb/typec/mux.c
> +++ b/drivers/usb/typec/mux.c
> @@ -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;
> -- 
> 2.36.1.476.g0c4daa206d-goog

-- 
heikki