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99 lines
3.0 KiB
Diff
99 lines
3.0 KiB
Diff
From e141a75b9cc36a09eb8bda90b530d97a9bb1f21e Mon Sep 17 00:00:00 2001
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From: Ahmet Inan <inan@aicodix.de>
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Date: Fri, 1 Sep 2017 15:18:01 +0200
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Subject: [PATCH 164/454] overlays: Add EETI EXC3000 overlay
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Add support for I2C connected EETI EXC3000 multiple touch controller
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using GPIO 4 (pin 7 on GPIO header) for interrupt.
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Signed-off-by: Ahmet Inan <inan@aicodix.de>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 12 +++++
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.../arm/boot/dts/overlays/exc3000-overlay.dts | 48 +++++++++++++++++++
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3 files changed, 61 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/exc3000-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -26,6 +26,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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dwc2.dtbo \
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enc28j60.dtbo \
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enc28j60-spi2.dtbo \
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+ exc3000.dtbo \
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fe-pi-audio.dtbo \
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goodix.dtbo \
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googlevoicehat-soundcard.dtbo \
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -468,6 +468,18 @@ Params: int_pin GPIO use
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speed SPI bus speed (default 12000000)
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+Name: exc3000
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+Info: Enables I2C connected EETI EXC3000 multiple touch controller using
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+ GPIO 4 (pin 7 on GPIO header) for interrupt.
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+Load: dtoverlay=exc3000,<param>=<val>
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+Params: interrupt GPIO used for interrupt (default 4)
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+ sizex Touchscreen size x (default 4096)
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+ sizey Touchscreen size y (default 4096)
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+ invx Touchscreen inverted x axis
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+ invy Touchscreen inverted y axis
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+ swapxy Touchscreen swapped x y axis
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+
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+
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Name: fe-pi-audio
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Info: Configures the Fe-Pi Audio Sound Card
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Load: dtoverlay=fe-pi-audio
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/exc3000-overlay.dts
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@@ -0,0 +1,48 @@
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+// Device tree overlay for I2C connected EETI EXC3000 multiple touch controller
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2708";
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+
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+ fragment@0 {
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+ target = <&gpio>;
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+ __overlay__ {
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+ exc3000_pins: exc3000_pins {
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+ brcm,pins = <4>; // interrupt
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+ brcm,function = <0>; // in
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+ brcm,pull = <2>; // pull-up
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+ };
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&i2c1>;
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+ __overlay__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ exc3000: exc3000@2a {
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+ compatible = "eeti,exc3000";
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+ reg = <0x2a>;
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&exc3000_pins>;
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+ interrupt-parent = <&gpio>;
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+ interrupts = <4 8>; // active low level-sensitive
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+ touchscreen-size-x = <4096>;
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+ touchscreen-size-y = <4096>;
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+ };
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+ };
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+ };
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+
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+ __overrides__ {
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+ interrupt = <&exc3000_pins>,"brcm,pins:0",
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+ <&exc3000>,"interrupts:0";
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+ sizex = <&exc3000>,"touchscreen-size-x:0";
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+ sizey = <&exc3000>,"touchscreen-size-y:0";
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+ invx = <&exc3000>,"touchscreen-inverted-x?";
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+ invy = <&exc3000>,"touchscreen-inverted-y?";
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+ swapxy = <&exc3000>,"touchscreen-swapped-x-y?";
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+ };
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+};
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