linux-kernel - [PATCH v2 6/7] ARM: dts: stm32: add joystick support on stm32746g-eval

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Message-ID: <1537363669-25991-7-git-send-email-amelie.delaunay@st.com>
Date:   Wed, 19 Sep 2018 15:27:48 +0200
From:   Amelie Delaunay <amelie.delaunay@...com>
To:     Lee Jones <lee.jones@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        "Maxime Coquelin" <mcoquelin.stm32@...il.com>
CC:     <linux-gpio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Amelie Delaunay <amelie.delaunay@...com>
Subject: [PATCH v2 6/7] ARM: dts: stm32: add joystick support on stm32746g-eval

The joystick (B3) on stm32746g-eval uses gpios on STMFX gpio expander.
These gpios need a pin configuration (push-pull and bias-pull-up),
described under stmfx_pinctrl node.

Signed-off-by: Amelie Delaunay <amelie.delaunay@...com>
---
 arch/arm/boot/dts/stm32746g-eval.dts | 43 ++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/arch/arm/boot/dts/stm32746g-eval.dts b/arch/arm/boot/dts/stm32746g-eval.dts
index 203faf0..b86ad83 100644
--- a/arch/arm/boot/dts/stm32746g-eval.dts
+++ b/arch/arm/boot/dts/stm32746g-eval.dts
@@ -86,6 +86,43 @@
 		};
 	};
 
+	joystick {
+		compatible = "gpio-keys";
+		#size-cells = <0>;
+		pinctrl-0 = <&joystick_pins>;
+		pinctrl-names = "default";
+		button-0 {
+			label = "JoySel";
+			linux,code = <KEY_ENTER>;
+			interrupt-parent = <&stmfx_pinctrl>;
+			interrupts = <0 IRQ_TYPE_EDGE_FALLING>;
+		};
+		button-1 {
+			label = "JoyDown";
+			linux,code = <KEY_DOWN>;
+			interrupt-parent = <&stmfx_pinctrl>;
+			interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
+		};
+		button-2 {
+			label = "JoyLeft";
+			linux,code = <KEY_LEFT>;
+			interrupt-parent = <&stmfx_pinctrl>;
+			interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
+		};
+		button-3 {
+			label = "JoyRight";
+			linux,code = <KEY_RIGHT>;
+			interrupt-parent = <&stmfx_pinctrl>;
+			interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+		};
+		button-4 {
+			label = "JoyUp";
+			linux,code = <KEY_UP>;
+			interrupt-parent = <&stmfx_pinctrl>;
+			interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
+		};
+	};
+
 	usbotg_hs_phy: usb-phy {
 		#phy-cells = <0>;
 		compatible = "usb-nop-xceiv";
@@ -129,6 +166,12 @@
 			interrupt-controller;
 			#interrupt-cells = <2>;
 			gpio-ranges = <&stmfx_pinctrl 0 0 24>;
+
+			joystick_pins: joystick {
+				pins = "gpio0", "gpio1", "gpio2", "gpio3", "gpio4";
+				drive-push-pull;
+				bias-pull-up;
+			};
 		};
 	};
 };
-- 
2.7.4