From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Pin-yen Lin <treapking@chromium.org>
Cc: "Andrzej Hajda" <andrzej.hajda@intel.com>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Robert Foss" <rfoss@kernel.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,
"Hsin-Yi Wang" <hsinyi@chromium.org>,
"Marek Vasut" <marex@denx.de>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
dri-devel@lists.freedesktop.org, "Xin Ji" <xji@analogixsemi.com>,
"Lyude Paul" <lyude@redhat.com>,
"Allen Chen" <allen.chen@ite.com.tw>,
devicetree@vger.kernel.org,
"AngeloGioacchino Del Regno"
<angelogioacchino.delregno@collabora.com>,
"Nícolas F . R . A . Prado" <nfraprado@collabora.com>,
chrome-platform@lists.linux.dev,
"Javier Martinez Canillas" <javierm@redhat.com>,
linux-acpi@vger.kernel.org, "Stephen Boyd" <swboyd@chromium.org>
Subject: Re: [PATCH v12 05/10] drm/bridge: anx7625: Check for Type-C during panel registration
Date: Tue, 21 Feb 2023 13:50:53 +0200 [thread overview]
Message-ID: <Y/SwHSmvvGekA1Ac@smile.fi.intel.com> (raw)
In-Reply-To: <20230221095054.1868277-6-treapking@chromium.org>
On Tue, Feb 21, 2023 at 05:50:49PM +0800, Pin-yen Lin wrote:
> The output port endpoints can be connected to USB-C connectors.
> Running drm_of_find_panel_or_bridge() with such endpoints leads to
> a continuous return value of -EPROBE_DEFER, even though there is
> no panel present.
>
> To avoid this, check for the existence of a "mode-switch" property in
> the port endpoint, and skip panel registration completely if so.
...
> + port_node = of_graph_get_port_by_id(np, 1);
> + fwnode_for_each_typec_mode_switch(&port_node->fwnode, fwnode) {
> + fwnode_handle_put(fwnode);
> + return 0;
> + }
With the proposed count API:
unsigned int count;
...
port_node = ...
count = typec_mode_switch_node_count(&port_node->fwnode);
if (count == 0)
return 0;
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2023-02-21 11:51 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-21 9:50 [PATCH v12 00/10] Register Type-C mode-switch in DP bridge endpoints Pin-yen Lin
2023-02-21 9:50 ` [PATCH v12 01/10] device property: Add remote endpoint to devcon matcher Pin-yen Lin
2023-02-21 11:26 ` Andy Shevchenko
2023-02-21 9:50 ` [PATCH v12 02/10] platform/chrome: cros_ec_typec: Purge blocking switch devlinks Pin-yen Lin
2023-02-21 9:50 ` [PATCH v12 03/10] drm/display: Add Type-C switch helpers Pin-yen Lin
2023-02-21 11:48 ` Andy Shevchenko
2023-02-22 8:53 ` Pin-yen Lin
2023-02-22 14:08 ` Andy Shevchenko
2023-02-21 9:50 ` [PATCH v12 04/10] dt-bindings: display: bridge: anx7625: Add mode-switch support Pin-yen Lin
2023-02-21 9:50 ` [PATCH v12 05/10] drm/bridge: anx7625: Check for Type-C during panel registration Pin-yen Lin
2023-02-21 11:50 ` Andy Shevchenko [this message]
2023-02-21 9:50 ` [PATCH v12 06/10] drm/bridge: Remove redundant i2c_client in anx7625/it6505 Pin-yen Lin
2023-02-21 11:37 ` Andy Shevchenko
2023-02-22 4:56 ` Pin-yen Lin
2023-02-21 9:50 ` [PATCH v12 07/10] drm/bridge: anx7625: Register Type C mode switches Pin-yen Lin
2023-02-21 11:36 ` Andy Shevchenko
2023-02-22 5:05 ` Pin-yen Lin
2023-02-21 9:50 ` [PATCH v12 08/10] dt-bindings: display: bridge: it6505: Add mode-switch support Pin-yen Lin
2023-02-21 9:50 ` [PATCH v12 09/10] drm/bridge: it6505: Fix Kconfig indentation Pin-yen Lin
2023-02-21 9:50 ` [PATCH v12 10/10] drm/bridge: it6505: Register Type C mode switches Pin-yen Lin
2023-02-21 11:54 ` Andy Shevchenko
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