target/linux/brcm2708/patches-4.1/0217-dts-Added-overlay-for-gpio_ir_recv-driver.patch

   1 From a325b7215cef646853a7a2b6d338fb2e9da78def Mon Sep 17 00:00:00 2001
   2 From: Holger Steinhaus <hsteinhaus@gmx.de>
   3 Date: Sat, 14 Nov 2015 18:37:43 +0100
   4 Subject: [PATCH 217/222] dts: Added overlay for gpio_ir_recv driver
   5
   6 ---
   7  arch/arm/boot/dts/overlays/Makefile            |  1 +
   8  arch/arm/boot/dts/overlays/README              | 16 +++++++++
   9  arch/arm/boot/dts/overlays/gpio-ir-overlay.dts | 45 ++++++++++++++++++++++++++
  10  3 files changed, 62 insertions(+)
  11  create mode 100644 arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
  12
  13 --- a/arch/arm/boot/dts/overlays/Makefile
  14 +++ b/arch/arm/boot/dts/overlays/Makefile
  15 @@ -17,6 +17,7 @@ dtb-$(RPI_DT_OVERLAYS) += at86rf233-over
  16  dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb
  17  dtb-$(RPI_DT_OVERLAYS) += dht11-overlay.dtb
  18  dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb
  19 +dtb-$(RPI_DT_OVERLAYS) += gpio-ir-overlay.dtb
  20  dtb-$(RPI_DT_OVERLAYS) += gpio-poweroff-overlay.dtb
  21  dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb
  22  dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb
  23 --- a/arch/arm/boot/dts/overlays/README
  24 +++ b/arch/arm/boot/dts/overlays/README
  25 @@ -209,6 +209,22 @@ Params: int_pin                  GPIO us
  26          speed                    SPI bus speed (default 12000000)
  27
  28
  29 +Name:   gpio-ir
  30 +Info:   Use GPIO pin as rc-core style infrared receiver input. The rc-core-
  31 +        based gpio_ir_recv driver maps received keys directly to a
  32 +        /dev/input/event* device, all decoding is done by the kernel - LIRC is
  33 +        not required! The key mapping and other decoding parameters can be
  34 +        configured by "ir-keytable" tool.
  35 +Load:   dtoverlay=gpio-ir,<param>=<val>
  36 +Params: gpio_pin                 Input pin number. Default is 18.
  37 +
  38 +        gpio_pull                Desired pull-up/down state (off, down, up)
  39 +                                 Default is "down".
  40 +
  41 +        rc-map-name              Default rc keymap (can also be changed by
  42 +                                 ir-keytable), defaults to "rc-rc6-mce"
  43 +
  44 +
  45  Name:   gpio-poweroff
  46  Info:   Drives a GPIO high or low on reboot
  47  Load:   gpio-poweroff,<param>=<val>
  48 --- /dev/null
  49 +++ b/arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
  50 @@ -0,0 +1,45 @@
  51 +// Definitions for ir-gpio module
  52 +/dts-v1/;
  53 +/plugin/;
  54 +
  55 +/ {
  56 +        compatible = "brcm,bcm2708";
  57 +
  58 +        fragment@0 {
  59 +                target-path = "/";
  60 +                __overlay__ {
  61 +                        gpio_ir: ir-receiver {
  62 +                                compatible = "gpio-ir-receiver";
  63 +
  64 +                                // pin number, high or low
  65 +                                gpios = <&gpio 18 1>;
  66 +
  67 +                                // parameter for keymap name
  68 +                                linux,rc-map-name = "rc-rc6-mce";
  69 +
  70 +                                status = "okay";
  71 +                        };
  72 +                };
  73 +        };
  74 +
  75 +        fragment@1 {
  76 +                target = <&gpio>;
  77 +                __overlay__ {
  78 +                        gpio_ir_pins: gpio_ir_pins {
  79 +                                brcm,pins = <18>;                       // pin 18
  80 +                                brcm,function = <0>;                    // in
  81 +                                brcm,pull = <1>;                        // down
  82 +                        };
  83 +                };
  84 +        };
  85 +
  86 +        __overrides__ {
  87 +                // parameters
  88 +                gpio_pin =      <&gpio_ir>,"gpios:4",
  89 +                                        <&gpio_ir_pins>,"brcm,pins:0",
  90 +                                        <&gpio_ir_pins>,"brcm,pull:0";  // pin number
  91 +                gpio_pull = <&gpio_ir_pins>,"brcm,pull:0";              // pull-up/down state
  92 +
  93 +                rc-map-name = <&gpio_ir>,"linux,rc-map-name";           // default rc map
  94 +        };
  95 +};