lkml.org 
[lkml]   [2022]   [Sep]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v2 0/3] allow gpio simulator be used as interrupt controller
Date
From: Wei Yongjun <weiyongjun1@huawei.com>

This series allow gpio simulator be used as interrupt controller, the use
case is mockup some device which using GPIO as interrupt controller, such
as mcp2515 CAN device. With the dts [1], we can mockup a mcp2515 device,
and trigger irq by following commands:

$ echo pull-down > /sys/bus/gpio/devices/gpiochip0/sim_gpio0/pull
$ echo pull-up > /sys/bus/gpio/devices/gpiochip0/sim_gpio0/pull

v1 -> v2:
- add use case to gpio-sim.rst

--[1]---------------------------------------------------------
/dts-v1/;

#include <dt-bindings/interrupt-controller/irq.h>

/ {
clk24m: clk24m {
compatible = "fixed-clock";
clock-output-names = "clk24m";
clock-frequency = <24000000>;
#clock-cells = <0>;
};

gpio-sim {
compatible = "gpio-simulator";

bank0: bank0 {
gpio-controller;
#gpio-cells = <2>;
ngpios = <16>;

interrupt-controller;
#interrupt-cells = <2>;

line_b-hog {
gpio-hog;
gpios = <0 1>;
input;
line-name = "irq-sim";
};
};
};

spi: spi {
compatible = "spi-mockup";

#address-cells = <1>;
#size-cells = <0>;

can0: can@1 {
compatible = "microchip,mcp2515";
reg = <1>;
clocks = <&clk24m>;
interrupt-parent = <&bank0>;
interrupts = <0 IRQ_TYPE_EDGE_BOTH>;
};

};
};
------------------------------><-----------------------------

Wei Yongjun (3):
genirq/irq_sim: Allow both one and two cell bindings
gpio: sim: make gpio simulator can be used as interrupt controller
gpio: sim: document use case for interrupt controller

Documentation/admin-guide/gpio/gpio-sim.rst | 44 +++++++++++++++++++++
drivers/gpio/gpio-sim.c | 2 +-
kernel/irq/irq_sim.c | 1 +
3 files changed, 46 insertions(+), 1 deletion(-)

--
2.34.1

\
 
 \ /
  Last update: 2022-09-26 10:28    [W:0.129 / U:0.880 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site