linux-kernel - Re: [v3 3/3] drm/bridge: it6505: Add audio support

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Date:   Tue, 28 Nov 2023 11:17:20 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Jiaxin Yu <jiaxin.yu@...iatek.com>
Cc:     broonie@...nel.org, andrzej.hajda@...el.com,
        neil.armstrong@...aro.org, robert.foss@...aro.org,
        Laurent.pinchart@...asonboard.com,
        kuninori.morimoto.gx@...esas.com, nfraprado@...labora.com,
        alsa-devel@...a-project.org, chunxu.li@...iatek.com,
        allen-kh.cheng@...iatek.com, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        linux-mediatek@...ts.infradead.org,
        ajye_huang@...pal.corp-partner.google.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [v3 3/3] drm/bridge: it6505: Add audio support

On Tue, Nov 21, 2023 at 8:54 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com> wrote:
>
> Il 30/07/23 20:08, Jiaxin Yu ha scritto:
> > Add audio support for it6505
> >
> > 1. Bridge to hdmi-codec to support audio feature. At the same time,
> >     the function of automatically detecting audio is removed.
> > 2. It is observed that some DP-to-HDMI dongles will get into bad
> >     states if sending InfoFrame without audio data. Defer to enable
> >     it6505's audio feature when PCM triggers START or RESUME.
> >
> > Signed-off-by: Jiaxin Yu <jiaxin.yu@...iatek.com>
>
> Hello Jiaxin,
> this patch doesn't apply anymore (and it won't build anymore) upstream.
>
> > ---
> >   drivers/gpu/drm/bridge/ite-it6505.c | 81 ++++++++++++++++++++++++++---
> >   1 file changed, 75 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
> > index 504d51c42f79..1cfcb0731288 100644
> > --- a/drivers/gpu/drm/bridge/ite-it6505.c
> > +++ b/drivers/gpu/drm/bridge/ite-it6505.c
> > @@ -2162,7 +2162,6 @@ static void it6505_stop_link_train(struct it6505 *it6505)
> >
> >   static void it6505_link_train_ok(struct it6505 *it6505)
> >   {
> > -     struct device *dev = &it6505->client->dev;
>
> This is because this changed to `struct device *dev = it6505->dev;`
>
> >
> >       it6505->link_state = LINK_OK;
> >       /* disalbe mute enable avi info frame */
> > @@ -2170,11 +2169,6 @@ static void it6505_link_train_ok(struct it6505 *it6505)
> >       it6505_set_bits(it6505, REG_INFOFRAME_CTRL,
> >                       EN_VID_CTRL_PKT, EN_VID_CTRL_PKT);
> >
> > -     if (it6505_audio_input(it6505)) {
> > -             DRM_DEV_DEBUG_DRIVER(dev, "Enable audio!");
> > -             it6505_enable_audio(it6505);
> > -     }
> > -
> >       if (it6505->hdcp_desired)
> >               it6505_start_hdcp(it6505);
> >   }
> > @@ -2846,6 +2840,45 @@ static void __maybe_unused it6505_audio_shutdown(struct device *dev, void *data)
> >               it6505_disable_audio(it6505);
> >   }
> >
> > +static int it6505_audio_hw_params(struct device *dev, void *data,
> > +                               struct hdmi_codec_daifmt *daifmt,
> > +                               struct hdmi_codec_params *params)
> > +{
> > +     struct it6505 *it6505 = dev_get_drvdata(dev);
> > +
> > +     return it6505_audio_setup_hw_params(it6505, params);
> > +}
> > +
> > +static int it6505_audio_setup_trigger(struct it6505 *it6505, int cmd)
> > +{
> > +     struct device *dev = &it6505->client->dev;
>
> ...and because you'll have to change this one, and other occurrences of that
> as well.
>
> Can you please respin this series?

Please also add a patch adding #sound-dai-cells to the it6505 binding.