linux-kernel - Re: [PATCH v3 0/2] usb: typec: qcom-pmic-typec: enable DP support

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Date:   Fri, 28 Jul 2023 13:19:36 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Bryan O'Donoghue" <bryan.odonoghue@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v3 0/2] usb: typec: qcom-pmic-typec: enable DP support

On Fri, 28 Jul 2023 at 13:14, Guenter Roeck <linux@...ck-us.net> wrote:
>
> On 7/28/23 03:08, Dmitry Baryshkov wrote:
> > To enable DisplayPort on the platforms supported by qcom-pmic-typec
> > driver, we need to register a corresponding drm_bridge for this device
> > to be able to receive the OOB hotplug event sent to the corresponding
> > DRM connector.
> >
> > Reception of the hotplug event is implemented by [1], but there is no
> > direct dependency on that patchset. This series implements the remaining
> > parts: registration of the drm_bridge and setting of the proper
> > destination for the OOB hotplug event.
> >
> > [1] https://patchwork.freedesktop.org/series/120393/
> >
> > Changes since v2:
> > - Reworded commit message for the first patch to explicitly mention that
> >    the "displayport" OF property was rejected (Bjorn)
> > - Removed several #ifdefs from the qcom-pmic-typec patch (Bryan, Konrad,
> >    Greg K-H)
> >
> > Changes since v1:
> > - Properly handle CONFIG_DRM dependency. Disallow building DRM as a
> >    module if qcom-pmic-typec driver is built-in (Bryan).
>
>   config TYPEC_QCOM_PMIC
>         tristate "Qualcomm PMIC USB Type-C Port Controller Manager driver"
>         depends on ARCH_QCOM || COMPILE_TEST
> +       depends on DRM || DRM=n
>
> This disallows building TYPEC_QCOM_PMIC into the kernel if DRM is built
> as module, which is pretty much the opposite of what is claimed above.
> It does not affect DRM at all.
>
> Not that it matters much, but I find it confusing if the change log
> claims to do the opposite of what the code is doing.

Ack. If there is a v4 I'll fix the changelog to invert the condition.

>
> Guenter
>
> >
> > Dmitry Baryshkov (2):
> >    usb: typec: altmodes/displayport: add support for embedded DP cases
> >    usb: typec: qcom-pmic-typec: register drm_bridge
> >
> >   drivers/usb/typec/altmodes/displayport.c      |  5 ++-
> >   drivers/usb/typec/tcpm/Kconfig                |  1 +
> >   drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c | 35 +++++++++++++++++++
> >   3 files changed, 40 insertions(+), 1 deletion(-)
> >
>


-- 
With best wishes
Dmitry