linux-kernel - Re: [PATCH v2 0/8] drm/bridge: dw-hdmi: improve i2s support

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Date:   Mon, 12 Aug 2019 14:19:25 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Jerome Brunet <jbrunet@...libre.com>,
        Andrzej Hajda <a.hajda@...sung.com>
Cc:     Kevin Hilman <khilman@...libre.com>,
        Jonas Karlman <jonas@...boo.se>,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v2 0/8] drm/bridge: dw-hdmi: improve i2s support

Hi,

On 12/08/2019 14:07, Jerome Brunet wrote:
> The purpose of this patchset is to improve the support of the i2s
> interface of the synopsys hdmi controller.
> 
> Once applied, the interface should support all the usual i2s bus formats,
> 8 channels playback and properly setup the channel number and allocation
> in the infoframes.
> 
> Also, the dw-hdmi i2s interface will now provide the eld to the generic
> hdmi-codec so it can expose the related controls to user space.
> 
> This work was inspired by Jonas Karlman's work, available here [0].
> 
> This was tested the Amlogic meson-g12a-sei510 platform.
> For this specific platform, which uses codec2codec links, there is a
> runtime dependency for patch 8 on this ASoC series [1].
> 
> Changes since v1 [2]:
>  * Fix copy size in .get_eld()
> 
> [0]: https://github.com/Kwiboo/linux-rockchip/commits/rockchip-5.2-for-libreelec-v5.2.3
> [1]: https://lkml.kernel.org/r/20190725165949.29699-1-jbrunet@baylibre.com
> [2]: https://lkml.kernel.org/r/20190805134102.24173-1-jbrunet@baylibre.com
> 
> Jerome Brunet (8):
>   drm/bridge: dw-hdmi-i2s: support more i2s format
>   drm/bridge: dw-hdmi: move audio channel setup out of ahb
>   drm/bridge: dw-hdmi: set channel count in the infoframes
>   drm/bridge: dw-hdmi-i2s: enable lpcm multi channels
>   drm/bridge: dw-hdmi-i2s: set the channel allocation
>   drm/bridge: dw-hdmi-i2s: reset audio fifo before applying new params
>   drm/bridge: dw-hdmi-i2s: enable only the required i2s lanes
>   drm/bridge: dw-hdmi-i2s: add .get_eld support

Reviewed-by: Neil Armstrong <narmstrong@...libre.com>

Jonas, is patch 8 ok for you now ? If yes I'll apply them to drm-misc-next.

Neil

> 
>  .../drm/bridge/synopsys/dw-hdmi-ahb-audio.c   | 20 ++-----
>  .../gpu/drm/bridge/synopsys/dw-hdmi-audio.h   |  1 +
>  .../drm/bridge/synopsys/dw-hdmi-i2s-audio.c   | 60 +++++++++++++++++--
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c     | 37 ++++++++++++
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.h     | 13 +++-
>  include/drm/bridge/dw_hdmi.h                  |  2 +
>  6 files changed, 108 insertions(+), 25 deletions(-)
>