target/linux/bcm27xx/patches-5.10/950-0694-overlays-Add-overlay-for-cap1106-capacitive-touch-se.patch

   1 From 62ae8907efb221f232126726bf4df5c9da23a8b4 Mon Sep 17 00:00:00 2001
   2 From: Jesse Taube <Mr.Bossman075@gmail.com>
   3 Date: Thu, 8 Jul 2021 16:32:16 -0400
   4 Subject: [PATCH] overlays: Add overlay for cap1106 capacitive touch
   5  sensor
   6
   7 Signed-off-by: Jesse Taube  <mr.bossman075@gmail.com>
   8 ---
   9  arch/arm/boot/dts/overlays/Makefile           |  1 +
  10  arch/arm/boot/dts/overlays/README             |  6 +++
  11  .../arm/boot/dts/overlays/cap1106-overlay.dts | 52 +++++++++++++++++++
  12  3 files changed, 59 insertions(+)
  13  create mode 100644 arch/arm/boot/dts/overlays/cap1106-overlay.dts
  14
  15 --- a/arch/arm/boot/dts/overlays/Makefile
  16 +++ b/arch/arm/boot/dts/overlays/Makefile
  17 @@ -30,6 +30,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  18         audiosense-pi.dtbo \
  19         audremap.dtbo \
  20         balena-fin.dtbo \
  21 +       cap1106.dtbo \
  22         chipdip-i2s-master-dac.dtbo \
  23         cma.dtbo \
  24         dht11.dtbo \
  25 --- a/arch/arm/boot/dts/overlays/README
  26 +++ b/arch/arm/boot/dts/overlays/README
  27 @@ -622,6 +622,12 @@ Info:   This overlay is now deprecated -
  28  Load:   <Deprecated>
  29
  30
  31 +Name:   cap1106
  32 +Info:   Enables the ability to use the cap1106 touch sensor as a keyboard
  33 +Load:   dtoverlay=cap1106,<param>=<val>
  34 +Params: int_pin                 GPIO pin for interrupt signal (default 23)
  35 +
  36 +
  37  Name:   chipdip-i2s-master-dac
  38  Info:   Configures Raspberry PI to work as I2S slave with BCLK=64Fs.
  39  Load:   dtoverlay=chipdip-i2s-master-dac
  40 --- /dev/null
  41 +++ b/arch/arm/boot/dts/overlays/cap1106-overlay.dts
  42 @@ -0,0 +1,52 @@
  43 +// Overlay for cap1106 from  Microchip Semiconductor
  44 +// add CONFIG_KEYBOARD_CAP11XX=y
  45 +
  46 +/dts-v1/;
  47 +/plugin/;
  48 +
  49 +/ {
  50 +        compatible = "brcm,bcm2835";
  51 +        fragment@0 {
  52 +                target = <&i2c1>;
  53 +                __overlay__{
  54 +                        status = "okay";
  55 +                        cap1106: cap1106@28 {
  56 +                                compatible = "microchip,cap1106";
  57 +                                pinctrl-0 = <&cap1106_pins>;
  58 +                                pinctrl-names = "default";
  59 +                                interrupt-parent = <&gpio>;
  60 +                                interrupts = <4 2>;
  61 +                                reg = <0x28>;
  62 +                                autorepeat;
  63 +                                microchip,sensor-gain = <2>;
  64 +
  65 +                                linux,keycodes = <2>,           /* KEY_1 */
  66 +                                                <3>,            /* KEY_2 */
  67 +                                                <4>,            /* KEY_3 */
  68 +                                                <5>,            /* KEY_4 */
  69 +                                                <6>,            /* KEY_5 */
  70 +                                                <7>;            /* KEY_6 */
  71 +
  72 +                                #address-cells = <1>;
  73 +                                #size-cells = <0>;
  74 +                                status = "okay";
  75 +
  76 +                        };
  77 +                };
  78 +        };
  79 +        fragment@1 {
  80 +                target = <&gpio>;
  81 +                __overlay__ {
  82 +                        cap1106_pins: cap1106_pins {
  83 +                                brcm,pins = <4>;
  84 +                                brcm,function = <0>; /* in */
  85 +                                brcm,pull = <0>; /* none */
  86 +                        };
  87 +                };
  88 +        };
  89 +
  90 +        __overrides__ {
  91 +                int_pin = <&cap1106>, "interrupts:0",
  92 +                          <&cap1106_pins>, "brcm,pins:0";
  93 +        };
  94 +};