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authorY Vo <yvo@apm.com>2015-05-29 16:52:41 +0700
committerLinus Walleij <linus.walleij@linaro.org>2015-06-02 14:52:00 +0200
commit733cf014f02040b3ad5864f3fd73d50d49c84b49 (patch)
tree35bb367c613a3f49d25a20484fdef1bc0dcc43d9
parent81d49ce8a8c1978009ec02963d1b0926a1d5f1d4 (diff)
downloadlinux-733cf014f02040b3ad5864f3fd73d50d49c84b49.tar.bz2
gpio: xgene: add ACPI support for APM X-Gene GPIO standby driver
Add ACPI support for APM X-Gene GPIO standby driver. Signed-off-by: Y Vo <yvo@apm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/gpio/gpio-xgene-sb.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-xgene-sb.c b/drivers/gpio/gpio-xgene-sb.c
index a7b8f8f0bf70..d57068b9083e 100644
--- a/drivers/gpio/gpio-xgene-sb.c
+++ b/drivers/gpio/gpio-xgene-sb.c
@@ -25,8 +25,11 @@
#include <linux/of_gpio.h>
#include <linux/gpio.h>
#include <linux/gpio/driver.h>
+#include <linux/acpi.h>
#include <linux/basic_mmio_gpio.h>
+#include "gpiolib.h"
+
#define XGENE_MAX_GPIO_DS 22
#define XGENE_MAX_GPIO_DS_IRQ 6
@@ -128,6 +131,11 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev)
else
dev_info(&pdev->dev, "X-Gene GPIO Standby driver registered\n");
+ if (priv->nirq > 0) {
+ /* Register interrupt handlers for gpio signaled acpi events */
+ acpi_gpiochip_request_interrupts(&priv->bgc.gc);
+ }
+
return ret;
}
@@ -135,6 +143,10 @@ static int xgene_gpio_sb_remove(struct platform_device *pdev)
{
struct xgene_gpio_sb *priv = platform_get_drvdata(pdev);
+ if (priv->nirq > 0) {
+ acpi_gpiochip_free_interrupts(&priv->bgc.gc);
+ }
+
return bgpio_remove(&priv->bgc);
}
@@ -144,10 +156,19 @@ static const struct of_device_id xgene_gpio_sb_of_match[] = {
};
MODULE_DEVICE_TABLE(of, xgene_gpio_sb_of_match);
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id xgene_gpio_sb_acpi_match[] = {
+ {"APMC0D15", 0},
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, xgene_gpio_sb_acpi_match);
+#endif
+
static struct platform_driver xgene_gpio_sb_driver = {
.driver = {
.name = "xgene-gpio-sb",
.of_match_table = xgene_gpio_sb_of_match,
+ .acpi_match_table = ACPI_PTR(xgene_gpio_sb_acpi_match),
},
.probe = xgene_gpio_sb_probe,
.remove = xgene_gpio_sb_remove,