linux-kernel - [PATCH v2 04/10] of: property: fw_devlink: Add a devlink for panel followers

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Message-ID: <20230607144931.v2.4.Ibf8e1342b5b7906279db2365aca45e6253857bb3@changeid>
Date:   Wed,  7 Jun 2023 14:49:26 -0700
From:   Douglas Anderson <dianders@...omium.org>
To:     Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>
Cc:     dri-devel@...ts.freedesktop.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-input@...r.kernel.org, Daniel Vetter <daniel@...ll.ch>,
        linux-kernel@...r.kernel.org, hsinyi@...gle.com,
        cros-qcom-dts-watchers@...omium.org, devicetree@...r.kernel.org,
        yangcong5@...qin.corp-partner.google.com,
        linux-arm-msm@...r.kernel.org,
        Chris Morgan <macroalpha82@...il.com>,
        Douglas Anderson <dianders@...omium.org>
Subject: [PATCH v2 04/10] of: property: fw_devlink: Add a devlink for panel followers

Inform fw_devlink of the fact that a panel follower (like a
touchscreen) is effectively a consumer of the panel from the purposes
of fw_devlink.

NOTE: this patch isn't required for correctness but instead optimizes
probe order / helps avoid deferrals.

Signed-off-by: Douglas Anderson <dianders@...omium.org>
---
Since this is so small, I'd presume it's OK for it to go through a DRM
tree with the proper Ack. That being said, this patch is just an
optimization and thus it could land completely separately from the
rest and they could all meet up in mainline.

Changes in v2:
- ("Add a devlink for panel followers") new for v2.

 drivers/of/property.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/of/property.c b/drivers/of/property.c
index ddc75cd50825..cf8dacf3e3b8 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -1266,6 +1266,7 @@ DEFINE_SIMPLE_PROP(pwms, "pwms", "#pwm-cells")
 DEFINE_SIMPLE_PROP(resets, "resets", "#reset-cells")
 DEFINE_SIMPLE_PROP(leds, "leds", NULL)
 DEFINE_SIMPLE_PROP(backlight, "backlight", NULL)
+DEFINE_SIMPLE_PROP(panel, "panel", NULL)
 DEFINE_SUFFIX_PROP(regulators, "-supply", NULL)
 DEFINE_SUFFIX_PROP(gpio, "-gpio", "#gpio-cells")
 
@@ -1354,6 +1355,7 @@ static const struct supplier_bindings of_supplier_bindings[] = {
 	{ .parse_prop = parse_resets, },
 	{ .parse_prop = parse_leds, },
 	{ .parse_prop = parse_backlight, },
+	{ .parse_prop = parse_panel, },
 	{ .parse_prop = parse_gpio_compat, },
 	{ .parse_prop = parse_interrupts, },
 	{ .parse_prop = parse_regulators, },
-- 
2.41.0.162.gfafddb0af9-goog