linux-kernel - Re: [PATCH v3 1/2] drm/msm/dp: Add support for determining the eDP/DP mode from DT

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Date: Fri, 22 Mar 2024 15:25:04 +0100
From: Johan Hovold <johan@...nel.org>
To: Abel Vesa <abel.vesa@...aro.org>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Rob Clark <robdclark@...il.com>,
	Abhinav Kumar <quic_abhinavk@...cinc.com>,
	Sean Paul <sean@...rly.run>,
	Marijn Suijten <marijn.suijten@...ainline.org>,
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Kuogee Hsieh <quic_khsieh@...cinc.com>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] drm/msm/dp: Add support for determining the
 eDP/DP mode from DT

On Fri, Mar 22, 2024 at 04:15:23PM +0200, Abel Vesa wrote:
> On 24-03-22 15:38:03, Dmitry Baryshkov wrote:
> > On Fri, 22 Mar 2024 at 15:36, Abel Vesa <abel.vesa@...aro.org> wrote:
> > > On 24-03-22 15:30:54, Dmitry Baryshkov wrote:
> > > > On Fri, 22 Mar 2024 at 15:22, Abel Vesa <abel.vesa@...aro.org> wrote:

> > > > > +static int dp_display_get_connector_type(struct platform_device *pdev,
> > > > > +                                        const struct msm_dp_desc *desc)
> > > > > +{
> > > > > +       struct device *dev = &pdev->dev;
> > > > > +       struct device_node *aux_bus;
> > > > > +       struct device_node *panel;
> > > > > +       int ret = DRM_MODE_CONNECTOR_DisplayPort;
> > > > > +
> > > > > +       /* legacy platforms specify connector type in match data */
> > > > > +       if (desc->connector_type == DRM_MODE_CONNECTOR_eDP ||
> > > > > +               desc->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
> > > >
> > > > misaligned
> > > >
> > >
> > > Sure, will fix.
> > >
> > > > > +               return desc->connector_type;
> > > >
> > > > Can we drop this part completely?
> > > >
> > >
> > > You mean the whole if clause? How should we handle the legacy approach
> > > then?
> > 
> > Legacy platforms still have the aux-bus/panel. so they should be
> > handled by the check below.
> > 
> 
> Oh, in that case we can drop the connector_type from every desc for all
> platforms.

Guys, please trim your replies!

Johan