From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Walle <michael@walle.cc>
Subject: [PATCH 16/18] arm64: dts: freescale: sl28: map GPIOs to input events
Date: Tue, 17 Mar 2020 21:50:15 +0100
Message-ID: <20200317205017.28280-17-michael@walle.cc>
References: <20200317205017.28280-1-michael@walle.cc>
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To: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-pwm@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Linus Walleij <linus.walleij@linaro.org>, Bartosz Golaszewski <bgolaszewski@baylibre.com>, Rob Herring <robh+dt@kernel.org>, Jean Delvare <jdelvare@suse.com>, Guenter Roeck <linux@roeck-us.net>, Lee Jones <lee.jones@linaro.org>, Thierry Reding <thierry.reding@gmail.com>, =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>, Wim Van Sebroeck <wim@linux-watchdog.org>, Shawn Guo <shawnguo@kernel.org>, Li Yang <leoyang.li@nxp.com>, Thomas Gleixner <tglx@linutronix.de>, Jason Cooper <jason@lakedaemon.net>, Marc Zyngier <maz@kernel.org>, Michael Walle <michael@walle.cc>
List-Id: linux-pwm@vger.kernel.org

Now that we have support for GPIO lines of the SMARC connector, map the
sleep, power and lid switch signals to the corresponding keys using the
gpio-keys and gpio-keys-polled drivers. The power and sleep signals have
dedicated interrupts, thus we use these ones. The lid switch is just
mapped to a GPIO input and needs polling.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 .../freescale/fsl-ls1028a-kontron-sl28.dts    | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
index b74d9ac0c388..f92a2b1b6628 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28.dts
@@ -9,6 +9,8 @@
 /dts-v1/;
 #include "fsl-ls1028a.dtsi"
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
 	model = "Kontron SMARC-sAL28";
@@ -22,6 +24,36 @@
 		spi1 = &dspi2;
 	};
 
+	buttons0 {
+		compatible = "gpio-keys";
+
+		power-button {
+			interrupts-extended = <&sl28cpld
+					       4 IRQ_TYPE_EDGE_BOTH>;
+			linux,code = <KEY_POWER>;
+			label = "Power";
+		};
+
+		sleep-button {
+			interrupts-extended = <&sl28cpld
+					       5 IRQ_TYPE_EDGE_BOTH>;
+			linux,code = <KEY_SLEEP>;
+			label = "Sleep";
+		};
+	};
+
+	buttons1 {
+		compatible = "gpio-keys-polled";
+		poll-interval = <200>;
+
+		lid-switch {
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_LID>;
+			gpios = <&cpld_gpi 4 GPIO_ACTIVE_LOW>;
+			label = "Lid";
+		};
+	};
+
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
-- 
2.20.1