[PATCH v2 14/22] usb: typec: tipd: Read data status in probe and cache its value

[Heikki Krogerus]

On Sat, Sep 06, 2025 at 03:43:27PM +0000, Sven Peter wrote:
> From: Hector Martin <marcan at marcan.st>
> 
> Just like for power status we also need to keep track of data status to
> be able to detect mode changes once we introduce de-bouncing for CD321x.
> Read it during probe and keep a cached copy of its value.
> 
> Signed-off-by: Hector Martin <marcan at marcan.st>
> Signed-off-by: Sven Peter <sven at kernel.org>

Reviewed-by: Heikki Krogerus <>

> ---
>  drivers/usb/typec/tipd/core.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
> index e6e9730ee6dacd8c1271b1d52a02da49ff248d3e..b558fc5ecbc35a9dabbf33c444f38173740af7c3 100644
> --- a/drivers/usb/typec/tipd/core.c
> +++ b/drivers/usb/typec/tipd/core.c
> @@ -176,6 +176,7 @@ struct tps6598x {
>  
>  	int wakeup;
>  	u32 status; /* status reg */
> +	u32 data_status;
>  	u16 pwr_status;
>  	struct delayed_work	wq_poll;
>  
> @@ -538,6 +539,7 @@ static bool tps6598x_read_data_status(struct tps6598x *tps)
>  		dev_err(tps->dev, "failed to read data status: %d\n", ret);
>  		return false;
>  	}
> +	tps->data_status = data_status;
>  
>  	if (tps->data->trace_data_status)
>  		tps->data->trace_data_status(data_status);
> @@ -1551,6 +1553,8 @@ static int tps6598x_probe(struct i2c_client *client)
>  	if (status & TPS_STATUS_PLUG_PRESENT) {
>  		if (!tps6598x_read_power_status(tps))
>  			goto err_unregister_port;
> +		if (!tps->data->read_data_status(tps))
> +			goto err_unregister_port;
>  		ret = tps6598x_connect(tps, status);
>  		if (ret)
>  			dev_err(&client->dev, "failed to register partner\n");
> 
> -- 
> 2.34.1
> 

-- 
heikki