bcm27xx: add support for linux v5.15

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0648-overlays-Add-overlay-for-Azoteq-IQS550.patch b/target/linux/bcm27xx/patches-5.15/950-0648-overlays-Add-overlay-for-Azoteq-IQS550.patch
new file mode 100644
index 0000000000..3f5c5642cf
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0648-overlays-Add-overlay-for-Azoteq-IQS550.patch
@@ -0,0 +1,97 @@
+From 7c9c2e970b0a047ae2a747752fdd12e31dbb2451 Mon Sep 17 00:00:00 2001
+From: Jeff LaBundy <jeff@labundy.com>
+Date: Mon, 28 Jan 2019 23:11:47 -0600
+Subject: [PATCH] overlays: Add overlay for Azoteq IQS550
+
+This patch adds a device tree overlay for the Azoteq IQS550
+trackpad/touchscreen controller.
+
+Signed-off-by: Jeff LaBundy <jeff@labundy.com>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             | 13 ++++++
+ arch/arm/boot/dts/overlays/iqs550-overlay.dts | 46 +++++++++++++++++++
+ 3 files changed, 60 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/iqs550-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -106,6 +106,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	iqaudio-dac.dtbo \
+ 	iqaudio-dacplus.dtbo \
+ 	iqaudio-digi-wm8804-audio.dtbo \
++	iqs550.dtbo \
+ 	irs1125.dtbo \
+ 	jedec-spi-nor.dtbo \
+ 	justboom-both.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1991,6 +1991,19 @@ Params: card_name               Override
+                                 dai stream name.
+ 
+ 
++Name:   iqs550
++Info:   Enables I2C connected Azoteq IQS550 trackpad/touchscreen controller
++        using GPIO 4 (pin 7 on GPIO header) for interrupt.
++Load:   dtoverlay=iqs550,<param>=<val>
++Params: interrupt               GPIO used for interrupt (default 4)
++        reset                   GPIO used for reset (optional)
++        sizex                   Touchscreen size x (default 800)
++        sizey                   Touchscreen size y (default 480)
++        invx                    Touchscreen inverted x axis
++        invy                    Touchscreen inverted y axis
++        swapxy                  Touchscreen swapped x y axis
++
++
+ Name:   irs1125
+ Info:   Infineon irs1125 TOF camera module.
+         Uses Unicam 1, which is the standard camera connector on most Pi
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/iqs550-overlay.dts
+@@ -0,0 +1,46 @@
++// SPDX-License-Identifier: GPL-2.0-or-later
++// Definitions for Azoteq IQS550 trackpad/touchscreen controller
++/dts-v1/;
++/plugin/;
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/interrupt-controller/irq.h>
++
++/ {
++	compatible = "brcm,bcm2835";
++
++	fragment@0 {
++		target = <&i2c1>;
++		__overlay__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			iqs550: iqs550@74 {
++				compatible = "azoteq,iqs550";
++				reg = <0x74>;
++				interrupt-parent = <&gpio>;
++				interrupts = <4 IRQ_TYPE_LEVEL_HIGH>;
++				touchscreen-size-x = <800>;
++				touchscreen-size-y = <480>;
++			};
++		};
++	};
++
++	fragment@1 {
++		target = <&iqs550>;
++		iqs550_reset: __dormant__ {
++			reset-gpios = <&gpio 255 (GPIO_ACTIVE_LOW |
++						  GPIO_PUSH_PULL)>;
++		};
++	};
++
++	__overrides__ {
++		interrupt = <&iqs550>,"interrupts:0";
++		reset = <0>,"+1", <&iqs550_reset>,"reset-gpios:4";
++		sizex = <&iqs550>,"touchscreen-size-x:0";
++		sizey = <&iqs550>,"touchscreen-size-y:0";
++		invx = <&iqs550>,"touchscreen-inverted-x?";
++		invy = <&iqs550>,"touchscreen-inverted-y?";
++		swapxy = <&iqs550>,"touchscreen-swapped-x-y?";
++	};
++};