Re: [PATCH v8 5/9] drm/bridge: aux-hpd: let drivers pass IRQ_HPD events

From: Luca Ceresoli <luca.ceresoli@bootlin.com>
To: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	 Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	 David Airlie <airlied@gmail.com>,
	Simona Vetter <simona@ffwll.ch>,
	 Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	 Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	 Andrzej Hajda <andrzej.hajda@intel.com>,
	 Neil Armstrong <neil.armstrong@linaro.org>,
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	 Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	 Jonas Karlman <jonas@kwiboo.se>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	 Luca Ceresoli <luca.ceresoli@bootlin.com>,
	 Jani Nikula <jani.nikula@linux.intel.com>,
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	Pengyu Luo <mitltlatltl@gmail.com>,
	 Chaoyi Chen <chaoyi.chen@rock-chips.com>,
	dri-devel@lists.freedesktop.org,  linux-kernel@vger.kernel.org,
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Subject: Re: [PATCH v8 5/9] drm/bridge: aux-hpd: let drivers pass IRQ_HPD events
Date: Thu, 05 Nov 2026 12:47:24 +0100	[thread overview]
Message-ID: <179387924494.1025980.3024349339803589757.b4-review@b4> (raw)
In-Reply-To: <20261024-hpd-irq-events-v8-5-6ee949e7a384@oss.qualcomm.com>

> The DisplayPort standard defines a special kind of HPD events called
> IRQ_HPD. These events are used to notify DP Source about the events on
> the Sink side.
>
> Let users of aux-hpd, the UCSI and PMIC GLINK drivers pass the IRQ_HPD
> events to the DisplayPort drivers.
>
> The drm_aux_hpd_bridge_notify() is kept to ease merging of the series,
> preventing extra cross-tree merges. It will be removed once all
> drivers are converted. The drm_bridge_hpd_notify() function is kept for
> the drivers which only care about the connector status and will always
> pass DRM_CONNECTOR_NO_EXTRA_STATUS as the extra status.

Do you have a plan to later convert all drm_bridge_hpd_notify() to the new
_extra() variant, then remove drm_bridge_hpd_notify() and eventually rename
drm_bridge_hpd_notify_extra() to drm_bridge_hpd_notify()?

Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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