This patch adds the support for the gpio-signaled acpi event.
This is used for power button on hisilicon D02 board, which
is an arm64 platform.
To support this function, _AEI and _Exx objects must be
defined in the corresponding GPIO device as follows:
Name (_AEI, ResourceTemplate () {
GpioInt(Edge, ActiveLow, ExclusiveAndWake, PullUp,
, " \\_SB.GPI0") {8}
})
Method (_E08, 0x0, NotSerialized) {
Notify (\_SB.PWRB, 0x80)
}
Acked-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Signed-off-by: qiujiang <qiujiang@xxxxxxxxxx>
---
drivers/gpio/gpio-dwapb.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 7a37c65..4955112 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -27,6 +27,8 @@
#include <linux/platform_data/gpio-dwapb.h>
#include <linux/slab.h>
+#include "gpiolib.h"
+
#define GPIO_SWPORTA_DR 0x00
#define GPIO_SWPORTA_DDR 0x04
#define GPIO_SWPORTB_DR 0x0c
@@ -436,6 +438,10 @@ static int dwapb_gpio_add_port(struct dwapb_gpio *gpio,
else
port->is_registered = true;
+ /* Add GPIO-signaled ACPI event support */
+ if (pp->irq)
+ acpi_gpiochip_request_interrupts(&(port->gc));
+
return err;
}
--
1.9.1
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