linux-kernel - Re: [PATCH v2 3/5] drm/msm/dp: Support up to 3 DP controllers

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Message-ID: <66f0f29e449b02e30678ed2e3487c7f2@codeaurora.org>
Date:   Tue, 28 Sep 2021 10:22:41 -0700
From:   khsieh@...eaurora.org
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Stephen Boyd <swboyd@...omium.org>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Kalyan Thota <kalyan_t@...eaurora.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        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 v2 3/5] drm/msm/dp: Support up to 3 DP controllers

On 2021-08-27 10:14, Bjorn Andersson wrote:
> On Fri 27 Aug 00:20 CDT 2021, Stephen Boyd wrote:
> 
>> Quoting Bjorn Andersson (2021-08-25 16:42:31)
>> > diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
>> > index 2c7de43f655a..4a6132c18e57 100644
>> > --- a/drivers/gpu/drm/msm/dp/dp_display.c
>> > +++ b/drivers/gpu/drm/msm/dp/dp_display.c
>> > @@ -78,6 +78,8 @@ struct dp_display_private {
>> >         char *name;
>> >         int irq;
>> >
>> > +       int id;
>> > +
>> >         /* state variables */
>> >         bool core_initialized;
>> >         bool hpd_irq_on;
>> > @@ -115,8 +117,19 @@ struct dp_display_private {
>> >         struct dp_audio *audio;
>> >  };
>> >
>> > +
>> > +struct msm_dp_config {
>> > +       phys_addr_t io_start[3];
>> 
>> Can this be made into another struct, like msm_dp_desc, that also
>> indicates what type of DP connector it is, i.e. eDP vs DP? That would
>> help me understand in modetest and /sys/class/drm what sort of 
>> connector
>> is probing. dp_drm_connector_init() would need to pass the type of
>> connector appropriately. Right now, eDP connectors still show up as DP
>> instead of eDP in sysfs.
>> 
> 
> I like it, will spin a v3 with this.
> 
> Regards,
> Bjorn

Hi Bjorn,

Have you spin off V3 yet?
When you expect your patches related to DP be up streamed?

Thanks,
kuogee
> 
>> > +       size_t num_dp;
>> > +};
>> > +
>> > +static const struct msm_dp_config sc7180_dp_cfg = {
>> > +       .io_start = { 0x0ae90000 },
>> > +       .num_dp = 1,
>> > +};
>> > +
>> >  static const struct of_device_id dp_dt_match[] = {
>> > -       {.compatible = "qcom,sc7180-dp"},
>> > +       { .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_cfg },
>> >         {}
>> >  };
>> >