Change in coreboot[master]: drivers/i2c/nau8825: Support nau8825 for ACPI GPIO descriptors

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/51922 )

Change subject: drivers/i2c/nau8825: Support nau8825 for ACPI GPIO descriptors
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drivers/i2c/nau8825: Support nau8825 for ACPI GPIO descriptors

Add definitions to describe GPIOs in generated ACPI objects.
The method allow either write a GpioInt() or Interrupt() descriptor.

Signed-off-by: Seven Lee 
Change-Id: I37fec7b0b9324dbfb61b7a8bea80f45026c54409
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51922
Reviewed-by: EricR Lai 
Tested-by: build bot (Jenkins) 
---
M src/drivers/i2c/nau8825/chip.h
M src/drivers/i2c/nau8825/nau8825.c
2 files changed, 6 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  EricR Lai: Looks good to me, approved

diff --git a/src/drivers/i2c/nau8825/chip.h b/src/drivers/i2c/nau8825/chip.h
index 9ba1d94..5b160c8 100644
--- a/src/drivers/i2c/nau8825/chip.h
+++ b/src/drivers/i2c/nau8825/chip.h
@@ -11,6 +11,7 @@
 struct drivers_i2c_nau8825_config {
    /* Interrupt configuration */
    struct acpi_irq irq;
+	struct acpi_gpio irq_gpio;

/* I2C Bus Frequency in Hertz (default 400kHz) */
    unsigned int bus_speed;
diff --git a/src/drivers/i2c/nau8825/nau8825.c b/src/drivers/i2c/nau8825/nau8825.c
index a0769d0..01b1f35 100644
--- a/src/drivers/i2c/nau8825/nau8825.c
+++ b/src/drivers/i2c/nau8825/nau8825.c
@@ -47,7 +47,11 @@
    acpigen_write_name("_CRS");
    acpigen_write_resourcetemplate_header();
    acpi_device_write_i2c(&i2c);
-	acpi_device_write_interrupt(&config->irq);
+	/* Allow either GpioInt() or Interrupt() */
+	if (config->irq_gpio.pin_count)
+		acpi_device_write_gpio(&config->irq_gpio);
+	else
+		acpi_device_write_interrupt(&config->irq);
    acpigen_write_resourcetemplate_footer();

/* Device Properties */