linux-kernel - Re: [PATCH v1] usb: typec: altmodes/displayport: send configure message on sop'

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Date: Mon, 26 Feb 2024 10:17:26 +0200
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: RD Babiera <rdbabiera@...gle.com>
Cc: gregkh@...uxfoundation.org, badhri@...gle.com,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] usb: typec: altmodes/displayport: send configure
 message on sop'

On Fri, Feb 23, 2024 at 12:23:03AM +0000, RD Babiera wrote:
> When the port is setting the pin configuration when no configuration is
> chosen, the DisplayPort driver will not send Configure to the cable plug
> if it's available. Add transition to DP_STATE_CONFIGURE_PRIME.
> 
> Fixes: 71ba4fe56656 ("usb: typec: altmodes/displayport: add SOP' support")
> Signed-off-by: RD Babiera <rdbabiera@...gle.com>

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

> ---
>  drivers/usb/typec/altmodes/displayport.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
> index 5a80776c7255..867f9796f8a8 100644
> --- a/drivers/usb/typec/altmodes/displayport.c
> +++ b/drivers/usb/typec/altmodes/displayport.c
> @@ -164,7 +164,8 @@ static int dp_altmode_status_update(struct dp_altmode *dp)
>  	} else if (!(con & DP_CONF_CURRENTLY(dp->data.conf))) {
>  		ret = dp_altmode_configure(dp, con);
>  		if (!ret) {
> -			dp->state = DP_STATE_CONFIGURE;
> +			dp->state = dp->plug_prime ? DP_STATE_CONFIGURE_PRIME :
> +						     DP_STATE_CONFIGURE;
>  			if (dp->hpd != hpd) {
>  				dp->hpd = hpd;
>  				dp->pending_hpd = true;
> 
> base-commit: 3bf0514dc6f36f81ee11b1becd977cb87b4c90c6
> -- 
> 2.44.0.rc0.258.g7320e95886-goog

-- 
heikki