target/linux/brcm2708/patches-4.4/0106-dts-Added-overlay-for-gpio_ir_recv-driver.patch

   1 From d97e7fdedbc15a25985dfa73f7e1c63e2b4ca4c8 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 106/127] 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              | 18 ++++++++++-
   9  arch/arm/boot/dts/overlays/gpio-ir-overlay.dts | 45 ++++++++++++++++++++++++++
  10  3 files changed, 63 insertions(+), 1 deletion(-)
  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 @@ -16,6 +16,7 @@ dtb-$(RPI_DT_OVERLAYS) += ads7846-overla
  16  dtb-$(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 @@ -196,6 +196,22 @@ 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:   dtoverlay=gpio-poweroff,<param>=<val>
  48 @@ -308,7 +324,7 @@ Params: <None>
  49  Name:   lirc-rpi
  50  Info:   Configures lirc-rpi (Linux Infrared Remote Control for Raspberry Pi)
  51          Consult the module documentation for more details.
  52 -Load:   dtoverlay=lirc-rpi,<param>=<val>,...
  53 +Load:   dtoverlay=lirc-rpi,<param>=<val>
  54  Params: gpio_out_pin             GPIO for output (default "17")
  55
  56          gpio_in_pin              GPIO for input (default "18")
  57 --- /dev/null
  58 +++ b/arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
  59 @@ -0,0 +1,45 @@
  60 +// Definitions for ir-gpio module
  61 +/dts-v1/;
  62 +/plugin/;
  63 +
  64 +/ {
  65 +        compatible = "brcm,bcm2708";
  66 +
  67 +        fragment@0 {
  68 +                target-path = "/";
  69 +                __overlay__ {
  70 +                        gpio_ir: ir-receiver {
  71 +                                compatible = "gpio-ir-receiver";
  72 +
  73 +                                // pin number, high or low
  74 +                                gpios = <&gpio 18 1>;
  75 +
  76 +                                // parameter for keymap name
  77 +                                linux,rc-map-name = "rc-rc6-mce";
  78 +
  79 +                                status = "okay";
  80 +                        };
  81 +                };
  82 +        };
  83 +
  84 +        fragment@1 {
  85 +                target = <&gpio>;
  86 +                __overlay__ {
  87 +                        gpio_ir_pins: gpio_ir_pins {
  88 +                                brcm,pins = <18>;                       // pin 18
  89 +                                brcm,function = <0>;                    // in
  90 +                                brcm,pull = <1>;                        // down
  91 +                        };
  92 +                };
  93 +        };
  94 +
  95 +        __overrides__ {
  96 +                // parameters
  97 +                gpio_pin =      <&gpio_ir>,"gpios:4",
  98 +                                        <&gpio_ir_pins>,"brcm,pins:0",
  99 +                                        <&gpio_ir_pins>,"brcm,pull:0";  // pin number
 100 +                gpio_pull = <&gpio_ir_pins>,"brcm,pull:0";              // pull-up/down state
 101 +
 102 +                rc-map-name = <&gpio_ir>,"linux,rc-map-name";           // default rc map
 103 +        };
 104 +};