linux-kernel - Re: [PATCH 1/3] usb: typec: tcpm: allow to use sink in accessory mode

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Message-ID: <Z_PXRQB9zgmXvpEA@kuha.fi.intel.com>
Date: Mon, 7 Apr 2025 16:46:45 +0300
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Michael Grzeschik <m.grzeschik@...gutronix.de>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...gutronix.de, Badhri Jagan Sridharan <badhri@...gle.com>
Subject: Re: [PATCH 1/3] usb: typec: tcpm: allow to use sink in accessory mode

+Badhri

On Fri, Apr 04, 2025 at 12:43:04AM +0200, Michael Grzeschik wrote:
> Since the function tcpm_acc_attach is not setting the data and role for
> for the sink case we extend it to check for it first.
> 
> Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>

Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

> ---
>  drivers/usb/typec/tcpm/tcpm.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
> index a99db4e025cd0..839697c14265e 100644
> --- a/drivers/usb/typec/tcpm/tcpm.c
> +++ b/drivers/usb/typec/tcpm/tcpm.c
> @@ -4551,12 +4551,17 @@ static void tcpm_snk_detach(struct tcpm_port *port)
>  static int tcpm_acc_attach(struct tcpm_port *port)
>  {
>  	int ret;
> +	enum typec_role role;
> +	enum typec_data_role data;
>  
>  	if (port->attached)
>  		return 0;
>  
> -	ret = tcpm_set_roles(port, true, TYPEC_SOURCE,
> -			     tcpm_data_role_for_source(port));
> +	role = tcpm_port_is_sink(port) ? TYPEC_SINK : TYPEC_SOURCE;
> +	data = tcpm_port_is_sink(port) ? tcpm_data_role_for_sink(port)
> +				       : tcpm_data_role_for_source(port);
> +
> +	ret = tcpm_set_roles(port, true, role, data);
>  	if (ret < 0)
>  		return ret;
>  

-- 
heikki