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x86: Move UCLASS_IRQ into a separate file

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Update this uclass to support the needs of the Apollo Lake ITSS. It
supports four operations.

Move the uclass into a separate directory so that sandbox can use it too.
Add a new Kconfig to control it and enable this on x86.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2019-12-06 21:41:58 -07:00
committed by Bin Meng
parent 3e17ffbb44
commit 79d66a6ac1
6 changed files with 152 additions and 5 deletions
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88
include/irq.h Normal file
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@@ -0,0 +1,88 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* IRQ is a type of interrupt controller used on recent Intel SoC.
*
* Copyright 2019 Google LLC
*/
#ifndef __irq_H
#define __irq_H
/**
* struct irq_ops - Operations for the IRQ
*/
struct irq_ops {
/**
* route_pmc_gpio_gpe() - Get the GPIO for an event
*
* @dev: IRQ device
* @pmc_gpe_num: Event number to check
* @returns GPIO for the event, or -ENOENT if none
*/
int (*route_pmc_gpio_gpe)(struct udevice *dev, uint pmc_gpe_num);
/**
* set_polarity() - Set the IRQ polarity
*
* @dev: IRQ device
* @irq: Interrupt number to set
* @active_low: true if active low, false for active high
* @return 0 if OK, -EINVAL if @irq is invalid
*/
int (*set_polarity)(struct udevice *dev, uint irq, bool active_low);
/**
* snapshot_polarities() - record IRQ polarities for later restore
*
* @dev: IRQ device
* @return 0
*/
int (*snapshot_polarities)(struct udevice *dev);
/**
* restore_polarities() - restore IRQ polarities
*
* @dev: IRQ device
* @return 0
*/
int (*restore_polarities)(struct udevice *dev);
};
#define irq_get_ops(dev) ((struct irq_ops *)(dev)->driver->ops)
/**
* irq_route_pmc_gpio_gpe() - Get the GPIO for an event
*
* @dev: IRQ device
* @pmc_gpe_num: Event number to check
* @returns GPIO for the event, or -ENOENT if none
*/
int irq_route_pmc_gpio_gpe(struct udevice *dev, uint pmc_gpe_num);
/**
* irq_set_polarity() - Set the IRQ polarity
*
* @dev: IRQ device
* @irq: Interrupt number to set
* @active_low: true if active low, false for active high
* @return 0 if OK, -EINVAL if @irq is invalid
*/
int irq_set_polarity(struct udevice *dev, uint irq, bool active_low);
/**
* irq_snapshot_polarities() - record IRQ polarities for later restore
*
* @dev: IRQ device
* @return 0
*/
int irq_snapshot_polarities(struct udevice *dev);
/**
* irq_restore_polarities() - restore IRQ polarities
*
* @dev: IRQ device
* @return 0
*/
int irq_restore_polarities(struct udevice *dev);
#endif