linux-kernel - Re: [PATCH v5 5/7] drm/msm/dp: Support up to 3 DP controllers

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Message-ID: <CAE-0n51WqRgoY11x_y-LoNAwzaZZWDgWxU4z+bcfRRa7OfaAtw@mail.gmail.com>
Date:   Sat, 16 Oct 2021 20:31:20 -0500
From:   Stephen Boyd <swboyd@...omium.org>
To:     Abhinav Kumar <abhinavk@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Kalyan Thota <kalyan_t@...eaurora.org>,
        Kuogee Hsieh <khsieh@...eaurora.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>
Cc:     Rob Herring <robh+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 5/7] drm/msm/dp: Support up to 3 DP controllers

Quoting Bjorn Andersson (2021-10-16 15:18:41)
> Based on the removal of the g_dp_display and the movement of the
> priv->dp lookup into the DP code it's now possible to have multiple
> DP instances.
>
> In line with the other controllers in the MSM driver, introduce a
> per-compatible list of base addresses which is used to resolve the
> "instance id" for the given DP controller. This instance id is used as
> index in the priv->dp[] array.
>
> Then extend the initialization code to initialize struct drm_encoder for
> each of the registered priv->dp[] and update the logic for associating
> each struct msm_dp with the struct dpu_encoder_virt.
>
> A new enum is introduced to document the connection between the
> instances referenced in the dpu_intf_cfg array and the controllers in
> the DP driver and sc7180 is updated.
>
> Lastly, bump the number of struct msm_dp instances carries by priv->dp
> to 3, the currently known maximum number of controllers found in a
> Qualcomm SoC.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@...omium.org>