linux-kernel - Re: [PATCH v8 0/2] drm_bridge: Add HDCP support

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Message-ID: <CAD=FV=U+Zh2V2r-THx25Qw7W-Fu_qM4v-+Evi+1tBCg92ieYKg@mail.gmail.com>
Date: Tue, 12 Aug 2025 11:02:42 -0700
From: Doug Anderson <dianders@...omium.org>
To: Fei Shao <fshao@...omium.org>
Cc: Hubert Mazur <hmazur@...gle.com>, Sean Paul <seanpaul@...omium.org>, 
	Xin Ji <xji@...logixsemi.com>, dri-devel@...ts.freedesktop.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 0/2] drm_bridge: Add HDCP support

Hi,

On Tue, Aug 12, 2025 at 1:22 AM Fei Shao <fshao@...omium.org> wrote:
>
> Hi Doug,
>
> This is a refreshed series to add HDCP support to DRM bridge.
>
> This v8 revision is based on [v7] and rebased on top of next-20250731.
> Note that v7 includes 3 patches, while v8 has only 2. The rationale for
> this change is provided below.
>
> In this series:
> - Patch 1 registers the content protection property to the bridge
>   connector if a bridge supports HDCP.
> - Patch 2 sets the HDCP bit in the ANX7625 bridge driver.
>
> Both Patch 1 and Patch 2 were previously reviewed and acked (sort of,
> see [ref]). The Reviewed-by tags are carried over as there are no major
> changes in v8, except for the rebase.
>
> The third patch from v7, which was specific to the ite-it6505 driver,
> isn't included in this series. Discussion on that patch had stalled, and
> it was later reverted in the downstream ChromeOS tree, meaning no
> manufactured Chromebook devices in the field currently use it.
>
> As a result, I think we can only focus on the first two patches which
> have already undergone review.
>
> Please take a look. Thank you.
>
> [v7]: https://lore.kernel.org/all/20221123100529.3943662-1-hsinyi@chromium.org/
> [v6]: https://lore.kernel.org/all/20221117110804.1431024-1-hsinyi@chromium.org/
> [v5]: https://lore.kernel.org/all/20221115062835.3785083-1-hsinyi@chromium.org/
> [ref]: https://lore.kernel.org/all/CAD=FV=VoF5PyeNWX+4_3sseyRemZVsr5WtQVeg-8mhfgm40w3g@mail.gmail.com/
>
> Regards,
> Fei
>
> Changes in v8:
> - rebase on top of next-20250731
>
> Fei Shao (2):
>   drm_bridge: register content protect property
>   drm/bridge: anx7625: register content protect property
>
>  drivers/gpu/drm/bridge/analogix/anx7625.c      | 1 +
>  drivers/gpu/drm/display/drm_bridge_connector.c | 9 +++++++++
>  include/drm/drm_bridge.h                       | 4 ++++
>  3 files changed, 14 insertions(+)

These seem OK to me. I checked offline with Sean and he was OK with
his Reviewed-by tag being carried forward on these two patches.

...so I'm fine with landing these patches after some bake time on the
list. Unless I hear objections, I'll land them midway through next
week. Please yell if you object or simply would like more bake time.
Thanks!

-Doug