// SPDX-License-Identifier: GPL-2.0
/*
* ACPI helpers for GPIO API
*
* Copyright (C) 2012, Intel Corporation
* Authors: Mathias Nyman <mathias.nyman@linux.intel.com>
* Mika Westerberg <mika.westerberg@linux.intel.com>
*/
#include <linux/dmi.h>
#include <linux/errno.h>
#include <linux/gpio/consumer.h>
#include <linux/gpio/driver.h>
#include <linux/gpio/machine.h>
#include <linux/export.h>
#include <linux/acpi.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/pinctrl/pinctrl.h>
#include "gpiolib.h"
#include "gpiolib-acpi.h"
static int run_edge_events_on_boot = -1;
module_param(run_edge_events_on_boot, int, 0444);
MODULE_PARM_DESC(run_edge_events_on_boot,
"Run edge _AEI event-handlers at boot: 0=no, 1=yes, -1=auto");
static char *ignore_wake;
module_param(ignore_wake, charp, 0444);
MODULE_PARM_DESC(ignore_wake,
"controller@pin combos on which to ignore the ACPI wake flag "
"ignore_wake=controller@pin[,controller@pin[,...]]");
struct acpi_gpiolib_dmi_quirk {
bool no_edge_events_on_boot;
char *ignore_wake;
};
/**
* struct acpi_gpio_event - ACPI GPIO event handler data
*
* @node: list-entry of the events list of the struct acpi_gpio_chip
* @handle: handle of ACPI method to execute when the IRQ triggers
* @handler: handler function to pass to request_irq() when requesting the IRQ
* @pin: GPIO pin number on the struct gpio_chip
* @irq: Linux IRQ number for the event, for request_irq() / free_irq()
* @irqflags: flags to pass to request_irq() when requesting the IRQ
* @irq_is_wake: If the ACPI flags indicate the IRQ is a wakeup source
* @irq_requested:True if request_irq() has been done
* @desc: struct gpio_desc for the GPIO pin for this event
*/
struct acpi_gpio_event {
struct list_head node;
ac