linux-kernel - [PATCH 4/4] ARM: dts: Add trackpad to exynos5250-spring

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Message-Id: <1416412585-10809-5-git-send-email-afaerber@suse.de>
Date:	Wed, 19 Nov 2014 16:56:24 +0100
From:	Andreas Färber <afaerber@...e.de>
To:	linux-samsung-soc@...r.kernel.org
Cc:	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	Vincent Palatin <vpalatin@...omium.org>,
	Doug Anderson <dianders@...omium.org>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Tomasz Figa <t.figa@...sung.com>,
	Andreas Färber <afaerber@...e.de>,
	Ben Dooks <ben-linux@...ff.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 4/4] ARM: dts: Add trackpad to exynos5250-spring

The HP Chromebook 11 uses an Atmel maXTouch as trackpad.
The keymap was found by trial-and-error.

Signed-off-by: Andreas Färber <afaerber@...e.de>
---
 arch/arm/boot/dts/exynos5250-spring.dts | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5250-spring.dts b/arch/arm/boot/dts/exynos5250-spring.dts
index cc3361afba49..2fa207c9e5e2 100644
--- a/arch/arm/boot/dts/exynos5250-spring.dts
+++ b/arch/arm/boot/dts/exynos5250-spring.dts
@@ -330,6 +330,22 @@
 	status = "okay";
 	samsung,i2c-sda-delay = <100>;
 	samsung,i2c-max-bus-freq = <378000>;
+
+	trackpad@4b {
+		compatible = "atmel,maxtouch";
+		reg = <0x4b>;
+		interrupt-parent = <&gpx1>;
+		interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&trackpad_irq>;
+		linux,gpio-keymap = <KEY_RESERVED
+		                     KEY_RESERVED
+		                     KEY_RESERVED
+		                     KEY_RESERVED
+		                     KEY_RESERVED
+		                     BTN_LEFT>;
+		wakeup-source;
+	};
 };
 
 /*
@@ -465,6 +481,13 @@
 		samsung,pin-drv = <0>;
 	};
 
+	trackpad_irq: trackpad-irq {
+		samsung,pins = "gpx1-2";
+		samsung,pin-function = <0xf>;
+		samsung,pin-pud = <0>;
+		samsung,pin-drv = <0>;
+	};
+
 	power_key_irq: power-key-irq {
 		samsung,pins = "gpx1-3";
 		samsung,pin-function = <0>;
-- 
2.1.2

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