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From 95901c883fd6a5220e0aee84a9f52179d6410a1d Mon Sep 17 00:00:00 2001
From: Holger Steinhaus <hsteinhaus@gmx.de>
Date: Sat, 14 Nov 2015 18:37:43 +0100
Subject: [PATCH] dts: Added overlay for gpio_ir_recv driver
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 18 ++++++++++-
arch/arm/boot/dts/overlays/gpio-ir-overlay.dts | 45 ++++++++++++++++++++++++++
3 files changed, 63 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -16,6 +16,7 @@ dtb-$(RPI_DT_OVERLAYS) += ads7846-overla
dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += dht11-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += gpio-ir-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += gpio-poweroff-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb
dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -196,6 +196,22 @@ Params: int_pin GPIO us
speed SPI bus speed (default 12000000)
+Name: gpio-ir
+Info: Use GPIO pin as rc-core style infrared receiver input. The rc-core-
+ based gpio_ir_recv driver maps received keys directly to a
+ /dev/input/event* device, all decoding is done by the kernel - LIRC is
+ not required! The key mapping and other decoding parameters can be
+ configured by "ir-keytable" tool.
+Load: dtoverlay=gpio-ir,<param>=<val>
+Params: gpio_pin Input pin number. Default is 18.
+
+ gpio_pull Desired pull-up/down state (off, down, up)
+ Default is "down".
+
+ rc-map-name Default rc keymap (can also be changed by
+ ir-keytable), defaults to "rc-rc6-mce"
+
+
Name: gpio-poweroff
Info: Drives a GPIO high or low on reboot
Load: dtoverlay=gpio-poweroff,<param>=<val>
@@ -308,7 +324,7 @@ Params: <None>
Name: lirc-rpi
Info: Configures lirc-rpi (Linux Infrared Remote Control for Raspberry Pi)
Consult the module documentation for more details.
-Load: dtoverlay=lirc-rpi,<param>=<val>,...
+Load: dtoverlay=lirc-rpi,<param>=<val>
Params: gpio_out_pin GPIO for output (default "17")
gpio_in_pin GPIO for input (default "18")
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
@@ -0,0 +1,45 @@
+// Definitions for ir-gpio module
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target-path = "/";
+ __overlay__ {
+ gpio_ir: ir-receiver {
+ compatible = "gpio-ir-receiver";
+
+ // pin number, high or low
+ gpios = <&gpio 18 1>;
+
+ // parameter for keymap name
+ linux,rc-map-name = "rc-rc6-mce";
+
+ status = "okay";
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ gpio_ir_pins: gpio_ir_pins {
+ brcm,pins = <18>; // pin 18
+ brcm,function = <0>; // in
+ brcm,pull = <1>; // down
+ };
+ };
+ };
+
+ __overrides__ {
+ // parameters
+ gpio_pin = <&gpio_ir>,"gpios:4",
+ <&gpio_ir_pins>,"brcm,pins:0",
+ <&gpio_ir_pins>,"brcm,pull:0"; // pin number
+ gpio_pull = <&gpio_ir_pins>,"brcm,pull:0"; // pull-up/down state
+
+ rc-map-name = <&gpio_ir>,"linux,rc-map-name"; // default rc map
+ };
+};
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