96 lines
3.7 KiB
Diff
96 lines
3.7 KiB
Diff
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From a325b7215cef646853a7a2b6d338fb2e9da78def Mon Sep 17 00:00:00 2001
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From: Holger Steinhaus <hsteinhaus@gmx.de>
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Date: Sat, 14 Nov 2015 18:37:43 +0100
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Subject: [PATCH 217/222] dts: Added overlay for gpio_ir_recv driver
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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 | 16 +++++++++
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arch/arm/boot/dts/overlays/gpio-ir-overlay.dts | 45 ++++++++++++++++++++++++++
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3 files changed, 62 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/gpio-ir-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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@@ -17,6 +17,7 @@ dtb-$(RPI_DT_OVERLAYS) += at86rf233-over
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dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += dht11-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb
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+dtb-$(RPI_DT_OVERLAYS) += gpio-ir-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += gpio-poweroff-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb
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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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@@ -209,6 +209,22 @@ Params: int_pin GPIO us
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speed SPI bus speed (default 12000000)
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+Name: gpio-ir
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+Info: Use GPIO pin as rc-core style infrared receiver input. The rc-core-
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+ based gpio_ir_recv driver maps received keys directly to a
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+ /dev/input/event* device, all decoding is done by the kernel - LIRC is
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+ not required! The key mapping and other decoding parameters can be
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+ configured by "ir-keytable" tool.
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+Load: dtoverlay=gpio-ir,<param>=<val>
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+Params: gpio_pin Input pin number. Default is 18.
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+
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+ gpio_pull Desired pull-up/down state (off, down, up)
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+ Default is "down".
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+
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+ rc-map-name Default rc keymap (can also be changed by
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+ ir-keytable), defaults to "rc-rc6-mce"
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+
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+
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Name: gpio-poweroff
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Info: Drives a GPIO high or low on reboot
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Load: gpio-poweroff,<param>=<val>
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
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@@ -0,0 +1,45 @@
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+// Definitions for ir-gpio module
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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-path = "/";
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+ __overlay__ {
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+ gpio_ir: ir-receiver {
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+ compatible = "gpio-ir-receiver";
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+
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+ // pin number, high or low
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+ gpios = <&gpio 18 1>;
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+
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+ // parameter for keymap name
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+ linux,rc-map-name = "rc-rc6-mce";
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+
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+ status = "okay";
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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 = <&gpio>;
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+ __overlay__ {
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+ gpio_ir_pins: gpio_ir_pins {
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+ brcm,pins = <18>; // pin 18
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+ brcm,function = <0>; // in
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+ brcm,pull = <1>; // down
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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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+ // parameters
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+ gpio_pin = <&gpio_ir>,"gpios:4",
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+ <&gpio_ir_pins>,"brcm,pins:0",
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+ <&gpio_ir_pins>,"brcm,pull:0"; // pin number
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+ gpio_pull = <&gpio_ir_pins>,"brcm,pull:0"; // pull-up/down state
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+
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+ rc-map-name = <&gpio_ir>,"linux,rc-map-name"; // default rc map
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+ };
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+};
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