From: Michael Walle <michael@walle.cc>
Date: Mon, 14 Sep 2020 21:43:38 +0000 (+0200)
Subject: arm64: dts: freescale: sl28: map GPIOs to input events
X-Git-Tag: v5.10-rc1~26^2~27^2~9
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=945710bbdbdf6c44f467b705c327556efee67b04;p=thirdparty%2Flinux.git

arm64: dts: freescale: sl28: map GPIOs to input events

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>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

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 5fdf4ec8b39fa..f46eb47cfa4df 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";
@@ -23,6 +25,36 @@
 		spi1 = &dspi2;
 	};
 
+	buttons0 {
+		compatible = "gpio-keys";
+
+		power-button {
+			interrupts-extended = <&sl28cpld_intc
+					       4 IRQ_TYPE_EDGE_BOTH>;
+			linux,code = <KEY_POWER>;
+			label = "Power";
+		};
+
+		sleep-button {
+			interrupts-extended = <&sl28cpld_intc
+					       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 = <&sl28cpld_gpio3 4 GPIO_ACTIVE_LOW>;
+			label = "Lid";
+		};
+	};
+
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};