Change in coreboot[master]: drivers/i2c/da7219: Allow GPIO based interrupt

[Daniel Kurtz (Code Review)]

Hello Daniel Kurtz,

I'd like you to do a code review. Please visit

https://review.coreboot.org/23657

to review the following change.

Change subject: drivers/i2c/da7219: Allow GPIO based interrupt
......................................................................

drivers/i2c/da7219: Allow GPIO based interrupt

Allow specifying the DA7219 interrupt pin as either an Interrupt or
GpioInt.

BUG=b:72121803
TEST=(with whole patch series) Grunt Kernel discovers DA7219 on i2c0

Change-Id: I2d26731bf4c0ad590dad2c5d26c252371f415f9a
Signed-off-by: Daniel Kurtz 
---
M src/drivers/i2c/da7219/chip.h
M src/drivers/i2c/da7219/da7219.c
2 files changed, 8 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/57/23657/1

diff --git a/src/drivers/i2c/da7219/chip.h b/src/drivers/i2c/da7219/chip.h
index 823b940..572d727 100644
--- a/src/drivers/i2c/da7219/chip.h
+++ b/src/drivers/i2c/da7219/chip.h
@@ -8,6 +8,9 @@
    /* Interrupt configuration */
    struct acpi_irq irq;

+	/* Use GPIO based interrupt instead of PIRQ */
+	struct acpi_gpio irq_gpio;
+
    /* I2C Bus Frequency in Hertz (default 400kHz) */
    unsigned bus_speed;

diff --git a/src/drivers/i2c/da7219/da7219.c b/src/drivers/i2c/da7219/da7219.c
index 4eef00c..c0f152d 100644
--- a/src/drivers/i2c/da7219/da7219.c
+++ b/src/drivers/i2c/da7219/da7219.c
@@ -57,7 +57,11 @@
    acpigen_write_name("_CRS");
    acpigen_write_resourcetemplate_header();
    acpi_device_write_i2c(&i2c);
-	acpi_device_write_interrupt(&config->irq);
+	/* Use either Interrupt() or GpioInt() */
+	if (config->irq_gpio.pin_count)
+		acpi_device_write_gpio(&config->irq_gpio);
+	else
+		acpi_device_write_interrupt(&config->irq);
    acpigen_write_resourcetemplate_footer();

/* AAD Child Device Properties */