linux-kernel - Re: [PATCH v2 4/5] usb: typec: ucsi: add update

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Date: Mon, 15 Apr 2024 10:03:34 +0300
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	linux-usb@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/5] usb: typec: ucsi: add update_connector callback

On Thu, Apr 11, 2024 at 07:49:56AM +0300, Dmitry Baryshkov wrote:
> Add a callback to allow glue drivers to update the connector before
> registering corresponding power supply and Type-C port. In particular
> this is useful if glue drivers want to touch the connector's Type-C
> capabilities structure.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

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

> ---
>  drivers/usb/typec/ucsi/ucsi.c | 3 +++
>  drivers/usb/typec/ucsi/ucsi.h | 2 ++
>  2 files changed, 5 insertions(+)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
> index 7ad544c968e4..57e73b823a4c 100644
> --- a/drivers/usb/typec/ucsi/ucsi.c
> +++ b/drivers/usb/typec/ucsi/ucsi.c
> @@ -1559,6 +1559,9 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con)
>  	cap->driver_data = con;
>  	cap->ops = &ucsi_ops;
>  
> +	if (ucsi->ops->update_connector)
> +		ucsi->ops->update_connector(con);
> +
>  	ret = ucsi_register_port_psy(con);
>  	if (ret)
>  		goto out;
> diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h
> index 3e1241e38f3c..c4d103db9d0f 100644
> --- a/drivers/usb/typec/ucsi/ucsi.h
> +++ b/drivers/usb/typec/ucsi/ucsi.h
> @@ -60,6 +60,7 @@ struct dentry;
>   * @sync_write: Blocking write operation
>   * @async_write: Non-blocking write operation
>   * @update_altmodes: Squashes duplicate DP altmodes
> + * @update_connector: Update connector capabilities before registering
>   * @connector_status: Updates connector status, called holding connector lock
>   *
>   * Read and write routines for UCSI interface. @sync_write must wait for the
> @@ -75,6 +76,7 @@ struct ucsi_operations {
>  			   const void *val, size_t val_len);
>  	bool (*update_altmodes)(struct ucsi *ucsi, struct ucsi_altmode *orig,
>  				struct ucsi_altmode *updated);
> +	void (*update_connector)(struct ucsi_connector *con);
>  	void (*connector_status)(struct ucsi_connector *con);
>  };
>  
> 
> -- 
> 2.39.2

-- 
heikki