From:   Jani Nikula <jani.nikula@intel.com>
To:     Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Pin-yen Lin <treapking@chromium.org>
Cc:     Andrzej Hajda <andrzej.hajda@intel.com>,
        Neil Armstrong <neil.armstrong@linaro.org>,
        Robert Foss <robert.foss@linaro.org>,
        Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
        Jonas Karlman <jonas@kwiboo.se>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Daniel Scally <djrscally@gmail.com>,
        Heikki Krogerus <heikki.krogerus@linux.intel.com>,
        Sakari Ailus <sakari.ailus@linux.intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J . Wysocki" <rafael@kernel.org>,
        Prashant Malani <pmalani@chromium.org>,
        Benson Leung <bleung@chromium.org>,
        Guenter Roeck <groeck@chromium.org>,
        linux-kernel@vger.kernel.org,
        =?utf-8?Q?N=C3=ADcolas_F_=2E_R_=2E_A_=2E_Pr?= =?utf-8?Q?ado?= 
        <nfraprado@collabora.com>, Hsin-Yi Wang <hsinyi@chromium.org>,
        devicetree@vger.kernel.org, Allen Chen <allen.chen@ite.com.tw>,
        Lyude Paul <lyude@redhat.com>, linux-acpi@vger.kernel.org,
        dri-devel@lists.freedesktop.org, Marek Vasut <marex@denx.de>,
        Xin Ji <xji@analogixsemi.com>,
        Stephen Boyd <swboyd@chromium.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Javier Martinez Canillas <javierm@redhat.com>,
        chrome-platform@lists.linux.dev,
        Alex Deucher <alexander.deucher@amd.com>,
        Andi Shyti <andi.shyti@linux.intel.com>,
        Douglas Anderson <dianders@chromium.org>,
        "Gustavo A. R. Silva" <gustavoars@kernel.org>,
        Imre Deak <imre.deak@intel.com>,
        Kees Cook <keescook@chromium.org>,
        Thierry Reding <treding@nvidia.com>
Subject: Re: [PATCH v11 3/9] drm/display: Add Type-C switch helpers
In-Reply-To: <Y+Dtwm39cGQO58xa@smile.fi.intel.com>
Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo
References: <20230204133040.1236799-1-treapking@chromium.org>
 <20230204133040.1236799-4-treapking@chromium.org>
 <Y+Dtwm39cGQO58xa@smile.fi.intel.com>
Date:   Mon, 06 Feb 2023 14:15:46 +0200
Message-ID: <87k00vyop9.fsf@intel.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

On Mon, 06 Feb 2023, Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:
> On Sat, Feb 04, 2023 at 09:30:34PM +0800, Pin-yen Lin wrote:
>> Add helpers to register and unregister Type-C "switches" for bridges
>> capable of switching their output between two downstream devices.
>> 
>> The helper registers USB Type-C mode switches when the "mode-switch"
>> and the "reg" properties are available in Device Tree.
>
> ...
>
>> +	fwnode_for_each_child_node(port, sw) {
>> +		if (fwnode_property_present(sw, "mode-switch"))
>
> This idiom is being used at least twice (in this code, haven't checked the rest
> of the patches, though), perhaps
>
> #define fwnode_for_each_typec_mode_switch(port, sw)			\
> 	fwnode_for_each_child_node(port, sw)				\
> 		if (!fwnode_property_present(sw, "mode-switch")) {} else
>
> ?

See for_each_if() in drm_util.h.


BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center