linux-kernel - Re: [PATCH RFC] usb: typec: ucsi: Add support for orientation

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Message-ID: <aPdc808hqRH73cjg@kuha.fi.intel.com>
Date: Tue, 21 Oct 2025 13:14:11 +0300
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Abel Vesa <abel.vesa@...aro.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC] usb: typec: ucsi: Add support for orientation

On Wed, Oct 15, 2025 at 04:50:36PM +0300, Abel Vesa wrote:
> According to UCSI 2.0 specification, the orientation is
> part of the connector status payload. So tie up the port
> orientation.
> 
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>

RFC or not, this looks ok to me.

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

> ---
>  drivers/usb/typec/ucsi/ucsi.c | 24 ++++++++++++++++++++++++
>  drivers/usb/typec/ucsi/ucsi.h |  3 +++
>  2 files changed, 27 insertions(+)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
> index 3995483a0aa097b822046e819f994164d6183b0d..17439ec434d41d24e8e4c7a97d7e6117fd07d950 100644
> --- a/drivers/usb/typec/ucsi/ucsi.c
> +++ b/drivers/usb/typec/ucsi/ucsi.c
> @@ -1008,6 +1008,28 @@ static int ucsi_check_connector_capability(struct ucsi_connector *con)
>  	return ret;
>  }
>  
> +static void ucsi_orientation(struct ucsi_connector *con)
> +{
> +	if (con->ucsi->version < UCSI_VERSION_2_0)
> +		return;
> +
> +	if (!UCSI_CONSTAT(con, CONNECTED)) {
> +		typec_set_orientation(con->port, TYPEC_ORIENTATION_NONE);
> +		return;
> +	}
> +
> +	switch (UCSI_CONSTAT(con, ORIENTATION)) {
> +	case UCSI_CONSTAT_ORIENTATION_NORMAL:
> +		typec_set_orientation(con->port, TYPEC_ORIENTATION_NORMAL);
> +		break;
> +	case UCSI_CONSTAT_ORIENTATION_REVERSE:
> +		typec_set_orientation(con->port, TYPEC_ORIENTATION_REVERSE);
> +		break;
> +	default:
> +		break;
> +	}
> +}
> +
>  static void ucsi_pwr_opmode_change(struct ucsi_connector *con)
>  {
>  	switch (UCSI_CONSTAT(con, PWR_OPMODE)) {
> @@ -1258,6 +1280,7 @@ static void ucsi_handle_connector_change(struct work_struct *work)
>  		typec_set_pwr_role(con->port, role);
>  		ucsi_port_psy_changed(con);
>  		ucsi_partner_change(con);
> +		ucsi_orientation(con);
>  
>  		if (UCSI_CONSTAT(con, CONNECTED)) {
>  			ucsi_register_partner(con);
> @@ -1690,6 +1713,7 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con)
>  		typec_set_pwr_role(con->port, UCSI_CONSTAT(con, PWR_DIR));
>  		ucsi_register_partner(con);
>  		ucsi_pwr_opmode_change(con);
> +		ucsi_orientation(con);
>  		ucsi_port_psy_changed(con);
>  		if (con->ucsi->cap.features & UCSI_CAP_GET_PD_MESSAGE)
>  			ucsi_get_partner_identity(con);
> diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h
> index e301d9012936fb85eaff7f260a862ff099eb77c5..c85175cd001487fa9d66076e608e098d236f5275 100644
> --- a/drivers/usb/typec/ucsi/ucsi.h
> +++ b/drivers/usb/typec/ucsi/ucsi.h
> @@ -360,6 +360,9 @@ struct ucsi_cable_property {
>  #define   UCSI_CONSTAT_BC_SLOW_CHARGING		2
>  #define   UCSI_CONSTAT_BC_TRICKLE_CHARGING	3
>  #define UCSI_CONSTAT_PD_VERSION_V1_2		UCSI_DECLARE_BITFIELD_V1_2(70, 16)
> +#define UCSI_CONSTAT_ORIENTATION		UCSI_DECLARE_BITFIELD_V2_0(86, 1)
> +#define   UCSI_CONSTAT_ORIENTATION_NORMAL	0
> +#define   UCSI_CONSTAT_ORIENTATION_REVERSE	1
>  #define UCSI_CONSTAT_PWR_READING_READY_V2_1	UCSI_DECLARE_BITFIELD_V2_1(89, 1)
>  #define UCSI_CONSTAT_CURRENT_SCALE_V2_1		UCSI_DECLARE_BITFIELD_V2_1(90, 3)
>  #define UCSI_CONSTAT_PEAK_CURRENT_V2_1		UCSI_DECLARE_BITFIELD_V2_1(93, 16)
> 
> ---
> base-commit: 13863a59e410cab46d26751941980dc8f088b9b3
> change-id: 20251015-usb-typec-ucsi-orientation-75ed0a2c9ff3
> 
> Best regards,
> -- 
> Abel Vesa <abel.vesa@...aro.org>

-- 
heikki