linux-kernel - Re: [PATCH 2/2] usb: typec: ucsi: Enable UCSI v2.0 notifications

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Message-ID: <Zl2WpdJvH4koI2mK@kuha.fi.intel.com>
Date: Mon, 3 Jun 2024 13:10:45 +0300
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
Cc: gregkh@...uxfoundation.org, dmitry.baryshkov@...aro.org,
	jthies@...gle.com, bleung@...omium.org, abhishekpandit@...omium.org,
	saranya.gopal@...el.com, lk@...e.de, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, pmalani@...omium.org
Subject: Re: [PATCH 2/2] usb: typec: ucsi: Enable UCSI v2.0 notifications

On Fri, May 24, 2024 at 11:58:21AM +0100, Diogo Ivo wrote:
> UCSI version 2.0 and above define new PPM notifications. Update the
> logic to determine which notifications to enable taking into account
> these changes.
> 
> Signed-off-by: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>

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

> ---
>  drivers/usb/typec/ucsi/ucsi.c | 19 ++++++++++++++++++-
>  1 file changed, 18 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
> index cb52e7b0a2c5..0cc1c49da4a0 100644
> --- a/drivers/usb/typec/ucsi/ucsi.c
> +++ b/drivers/usb/typec/ucsi/ucsi.c
> @@ -1664,7 +1664,7 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con)
>  
>  static u64 ucsi_get_supported_notifications(struct ucsi *ucsi)
>  {
> -	u8 features = ucsi->cap.features;
> +	u16 features = ucsi->cap.features;
>  	u64 ntfy = UCSI_ENABLE_NTFY_ALL;
>  
>  	if (!(features & UCSI_CAP_ALT_MODE_DETAILS))
> @@ -1680,6 +1680,23 @@ static u64 ucsi_get_supported_notifications(struct ucsi *ucsi)
>  	if (!(features & UCSI_CAP_PD_RESET))
>  		ntfy &= ~UCSI_ENABLE_NTFY_PD_RESET_COMPLETE;
>  
> +	if (ucsi->version <= UCSI_VERSION_1_2)
> +		return ntfy;
> +
> +	ntfy |= UCSI_ENABLE_NTFY_SINK_PATH_STS_CHANGE;
> +
> +	if (features & UCSI_CAP_GET_ATTENTION_VDO)
> +		ntfy |= UCSI_ENABLE_NTFY_ATTENTION;
> +
> +	if (features & UCSI_CAP_FW_UPDATE_REQUEST)
> +		ntfy |= UCSI_ENABLE_NTFY_LPM_FW_UPDATE_REQ;
> +
> +	if (features & UCSI_CAP_SECURITY_REQUEST)
> +		ntfy |= UCSI_ENABLE_NTFY_SECURITY_REQ_PARTNER;
> +
> +	if (features & UCSI_CAP_SET_RETIMER_MODE)
> +		ntfy |= UCSI_ENABLE_NTFY_SET_RETIMER_MODE;
> +
>  	return ntfy;
>  }
>  
> -- 
> 2.45.1

-- 
heikki