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x86: irq: Support flags for acpi_gpe

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This binding currently has a flags cell but it is not used. Make use of it
to create ACPI tables for interrupts.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
This commit is contained in:
Simon Glass 2020-07-07 21:32:34 -06:00 • committed by Bin Meng
parent 11e27ae92b
commit a8c2789c09
2 changed files with 40 additions and 0 deletions
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26
arch/x86/cpu/acpi_gpe.c
View file

@ -8,7 +8,10 @@
#include <dm.h> #include <dm.h>
#include <irq.h> #include <irq.h>
#include <log.h> #include <log.h>
#include <acpi/acpi_device.h>
#include <asm/io.h> #include <asm/io.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/x86-irq.h>
/** /**
* struct acpi_gpe_priv - private driver information * struct acpi_gpe_priv - private driver information
@ -62,13 +65,36 @@ static int acpi_gpe_ofdata_to_platdata(struct udevice *dev)
static int acpi_gpe_of_xlate(struct irq *irq, struct ofnode_phandle_args *args) static int acpi_gpe_of_xlate(struct irq *irq, struct ofnode_phandle_args *args)
{ {
irq->id = args->args[0]; irq->id = args->args[0];
irq->flags = args->args[1];
return 0; return 0;
} }
#if CONFIG_IS_ENABLED(ACPIGEN)
static int acpi_gpe_get_acpi(const struct irq *irq, struct acpi_irq *acpi_irq)
{
memset(acpi_irq, '\0', sizeof(*acpi_irq));
acpi_irq->pin = irq->id;
acpi_irq->mode = irq->flags & IRQ_TYPE_EDGE_BOTH ?
ACPI_IRQ_EDGE_TRIGGERED : ACPI_IRQ_LEVEL_TRIGGERED;
acpi_irq->polarity = irq->flags &
(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW) ?
ACPI_IRQ_ACTIVE_LOW : ACPI_IRQ_ACTIVE_HIGH;
acpi_irq->shared = irq->flags & X86_IRQ_TYPE_SHARED ?
ACPI_IRQ_SHARED : ACPI_IRQ_EXCLUSIVE;
acpi_irq->wake = irq->flags & X86_IRQ_TYPE_WAKE ? ACPI_IRQ_WAKE :
ACPI_IRQ_NO_WAKE;
return 0;
}
#endif
static const struct irq_ops acpi_gpe_ops = { static const struct irq_ops acpi_gpe_ops = {
.read_and_clear = acpi_gpe_read_and_clear, .read_and_clear = acpi_gpe_read_and_clear,
.of_xlate = acpi_gpe_of_xlate, .of_xlate = acpi_gpe_of_xlate,
#if CONFIG_IS_ENABLED(ACPIGEN)
.get_acpi = acpi_gpe_get_acpi,
#endif
}; };
static const struct udevice_id acpi_gpe_ids[] = { static const struct udevice_id acpi_gpe_ids[] = {

14
include/dt-bindings/interrupt-controller/x86-irq.h Normal file
View file

@ -0,0 +1,14 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2019 Google LLC
*
* This provides additional flags used by x86.
*/
#ifndef _DT_BINDINGS_INTERRUPT_CONTROLLER_X86_IRQ_H
#define _DT_BINDINGS_INTERRUPT_CONTROLLER_X86_IRQ_H
#define X86_IRQ_TYPE_SHARED (1 << 4)
#define X86_IRQ_TYPE_WAKE (1 << 5)
#endif