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irq: Add a method to convert an interrupt to ACPI

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When generating ACPI tables we need to convert IRQs in U-Boot to the ACPI
structures required by ACPI. This is a SoC-specific conversion and cannot
be handled by generic code, so add a new IRQ method to do the conversion.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2020-07-07 13:11:41 -06:00
committed by Bin Meng
parent 2715b3623c
commit f4955137f5
5 changed files with 157 additions and 2 deletions
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43
include/irq.h
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@@ -8,6 +8,9 @@
#ifndef __irq_H
#define __irq_H
struct acpi_irq;
struct ofnode_phandle_args;
/*
* Interrupt controller types available. You can find a particular one with
* irq_first_device_type()
@@ -24,10 +27,12 @@ enum irq_dev_t {
*
* @dev: IRQ device that handles this irq
* @id: ID to identify this irq with the device
* @flags: Flags associated with this interrupt (IRQ_TYPE_...)
*/
struct irq {
struct udevice *dev;
ulong id;
ulong flags;
};
/**
@@ -119,10 +124,36 @@ struct irq_ops {
* @return 0 if OK, or a negative error code.
*/
int (*free)(struct irq *irq);
#if CONFIG_IS_ENABLED(ACPIGEN)
/**
* get_acpi() - Get the ACPI info for an irq
*
* This converts a irq to an ACPI structure for adding to the ACPI
* tables.
*
* @irq: irq to convert
* @acpi_irq: Output ACPI interrupt information
* @return ACPI pin number or -ve on error
*/
int (*get_acpi)(const struct irq *irq, struct acpi_irq *acpi_irq);
#endif
};
#define irq_get_ops(dev) ((struct irq_ops *)(dev)->driver->ops)
/**
* irq_is_valid() - Check if an IRQ is valid
*
* @irq: IRQ description containing device and ID, e.g. previously
* returned by irq_get_by_index()
* @return true if valid, false if not
*/
static inline bool irq_is_valid(const struct irq *irq)
{
return irq->dev != NULL;
}
/**
* irq_route_pmc_gpio_gpe() - Get the GPIO for an event
*
@@ -223,4 +254,16 @@ int irq_free(struct irq *irq);
*/
int irq_first_device_type(enum irq_dev_t type, struct udevice **devp);
/**
* irq_get_acpi() - Get the ACPI info for an irq
*
* This converts a irq to an ACPI structure for adding to the ACPI
* tables.
*
* @irq: irq to convert
* @acpi_irq: Output ACPI interrupt information
* @return ACPI pin number or -ve on error
*/
int irq_get_acpi(const struct irq *irq, struct acpi_irq *acpi_irq);
#endif