linux-kernel - Re: [PATCH v3 0/6] drm/vc4: hdmi: Fix CEC access while disabled

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Message-ID: <20210914075523.nit6lznlpasb7pxy@gilmour>
Date:   Tue, 14 Sep 2021 09:55:23 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     dri-devel@...ts.freedesktop.org,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>
Cc:     linux-kernel@...r.kernel.org,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Phil Elwell <phil@...pberrypi.com>,
        Tim Gover <tim.gover@...pberrypi.com>,
        Dom Cobley <dom@...pberrypi.com>,
        Boris Brezillon <bbrezillon@...nel.org>,
        linux-rpi-kernel@...ts.infradead.org,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        bcm-kernel-feedback-list@...adcom.com,
        Emma Anholt <emma@...olt.net>,
        Nicolas Saenz Julienne <nsaenz@...nel.org>
Subject: Re: [PATCH v3 0/6] drm/vc4: hdmi: Fix CEC access while disabled

On Thu, Aug 19, 2021 at 03:59:25PM +0200, Maxime Ripard wrote:
> Hi,
> 
> This series aims at fixing a complete and silent hang when one tries to use CEC
> while the display output is off.
> 
> This can be tested with:
> 
> echo off > /sys/class/drm/card0-HDMI-A-1/status
> cec-ctl --tuner -p 1.0.0.0
> cec-compliance
> 
> This series addresses it by making sure the HDMI controller is powered up as
> soon as the CEC device is opened by the userspace.

Applied, thanks!
Maxime

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