linux-kernel - Re: [PATCH 1/4] drm/bridge: dw-hdmi: Add function to get plat

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Message-ID: <CAA+D8AOQ9v_qCHecfL1brXUJgpA3UjdDq-O3J9udQzp2xm3J9w@mail.gmail.com>
Date: Mon, 21 Jul 2025 11:24:23 +0800
From: Shengjiu Wang <shengjiu.wang@...il.com>
To: Frank Li <Frank.li@....com>
Cc: Shengjiu Wang <shengjiu.wang@....com>, andrzej.hajda@...el.com, 
	neil.armstrong@...aro.org, rfoss@...nel.org, 
	Laurent.pinchart@...asonboard.com, jonas@...boo.se, jernej.skrabec@...il.com, 
	maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de, 
	airlied@...il.com, simona@...ll.ch, lumag@...nel.org, dianders@...omium.org, 
	cristian.ciocaltea@...labora.com, luca.ceresoli@...tlin.com, 
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
	victor.liu@....com, shawnguo@...nel.org, s.hauer@...gutronix.de, 
	kernel@...gutronix.de, festevam@...il.com, imx@...ts.linux.dev, 
	linux-arm-kernel@...ts.infradead.org, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, p.zabel@...gutronix.de, devicetree@...r.kernel.org, 
	l.stach@...gutronix.de
Subject: Re: [PATCH 1/4] drm/bridge: dw-hdmi: Add function to get plat_data

On Sat, Jul 19, 2025 at 12:15 AM Frank Li <Frank.li@....com> wrote:
>
> On Fri, Jul 18, 2025 at 06:11:47PM +0800, Shengjiu Wang wrote:
> > The enable_audio() and disable_audio() callback pointers are in
> > plat_data structure, and the audio device driver needs to get plat_data
> > for assign these pointers. So add a function to export plat_data
> > structure.
>
> drm/bridge: dw-hdmi: Add API dw_hdmi_to_plat_data() to get plat_data
>
> Add API dw_hdmi_to_plat_data() to fetch plat_data because audo device
> driver needs it to enabe(disable)_audio().

Thanks for comments.  will update it to the next version.

best regards
Shengjiu Wang
>
> Frank
>
> >
> > Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> > ---
> >  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 6 ++++++
> >  include/drm/bridge/dw_hdmi.h              | 1 +
> >  2 files changed, 7 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > index 76c6570e2a85..3dfa42178f6c 100644
> > --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> > @@ -198,6 +198,12 @@ struct dw_hdmi {
> >       enum drm_connector_status last_connector_result;
> >  };
> >
> > +const struct dw_hdmi_plat_data *dw_hdmi_to_plat_data(struct dw_hdmi *hdmi)
> > +{
> > +     return hdmi->plat_data;
> > +}
> > +EXPORT_SYMBOL_GPL(dw_hdmi_to_plat_data);
> > +
> >  #define HDMI_IH_PHY_STAT0_RX_SENSE \
> >       (HDMI_IH_PHY_STAT0_RX_SENSE0 | HDMI_IH_PHY_STAT0_RX_SENSE1 | \
> >        HDMI_IH_PHY_STAT0_RX_SENSE2 | HDMI_IH_PHY_STAT0_RX_SENSE3)
> > diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
> > index 6a46baa0737c..a56a3519a22a 100644
> > --- a/include/drm/bridge/dw_hdmi.h
> > +++ b/include/drm/bridge/dw_hdmi.h
> > @@ -208,4 +208,5 @@ void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data);
> >
> >  bool dw_hdmi_bus_fmt_is_420(struct dw_hdmi *hdmi);
> >
> > +const struct dw_hdmi_plat_data *dw_hdmi_to_plat_data(struct dw_hdmi *hdmi);
> >  #endif /* __IMX_HDMI_H__ */
> > --
> > 2.34.1
> >