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acpi: Support generation of interrupt descriptor

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Add a function to write an interrupt descriptor to the generated ACPI
code.

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 13:11:43 -06:00
committed by Bin Meng
parent 61cc93396a
commit ff715c6f4f
3 changed files with 166 additions and 0 deletions
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15
include/acpi/acpi_device.h
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@@ -11,6 +11,8 @@
#include <linux/bitops.h>
struct acpi_ctx;
struct irq;
struct udevice;
/* ACPI descriptor values for common descriptors: SERIAL_BUS means I2C */
@@ -128,4 +130,17 @@ int acpi_device_scope(const struct udevice *dev, char *scope, int maxlen);
*/
enum acpi_dev_status acpi_device_status(const struct udevice *dev);
/**
* acpi_device_write_interrupt_irq() - Write an interrupt descriptor
*
* This writes an ACPI interrupt descriptor for the given interrupt, converting
* fields as needed.
*
* @ctx: ACPI context pointer
* @req_irq: Interrupt to output
* @return IRQ pin number if OK, -ve on error
*/
int acpi_device_write_interrupt_irq(struct acpi_ctx *ctx,
const struct irq *req_irq);
#endif