linux-kernel - Re: [RFC PATCH 3/5] drm/i915: hdmi: add CEC notifier to intel

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Date:   Tue, 15 May 2018 08:34:06 +0200
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Neil Armstrong <narmstrong@...libre.com>, airlied@...ux.ie,
        hans.verkuil@...co.com, lee.jones@...aro.org, olof@...om.net,
        seanpaul@...gle.com
Cc:     sadolfsson@...gle.com, felixe@...gle.com, bleung@...gle.com,
        darekm@...gle.com, marcheu@...omium.org, fparent@...libre.com,
        dri-devel@...ts.freedesktop.org, linux-media@...r.kernel.org,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 3/5] drm/i915: hdmi: add CEC notifier to intel_hdmi

On 05/15/2018 12:40 AM, Neil Armstrong wrote:
> This patchs adds the cec_notifier feature to the intel_hdmi part
> of the i915 DRM driver. It uses the HDMI DRM connector name to differentiate
> between each HDMI ports.
> The changes will allow the i915 HDMI code to notify EDID and HPD changes
> to an eventual CEC adapter.
> 
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> ---
>  drivers/gpu/drm/i915/intel_drv.h  |  2 ++
>  drivers/gpu/drm/i915/intel_hdmi.c | 10 ++++++++++

The Kconfig also needs to be changed. In the DRM_I915 you need to add:

	select CEC_CORE if CEC_NOTIFIER

Otherwise you'll get problems if the cec driver is a module and i915 is built-in.

Regards,

	Hans