mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-24 12:44:23 +08:00
79d66a6ac1
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>
89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
/* 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
|