commit 733cf014f02040b3ad5864f3fd73d50d49c84b49
author Y Vo <yvo@apm.com> Fri May 29 16:52:41 2015 +0700
committer Linus Walleij <linus.walleij@linaro.org> Tue Jun 02 14:52:00 2015 +0200
tree 35bb367c613a3f49d25a20484fdef1bc0dcc43d9
parent 81d49ce8a8c1978009ec02963d1b0926a1d5f1d4

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>

drivers/gpio/gpio-xgene-sb.c

diff --git a/drivers/gpio/gpio-xgene-sb.c b/drivers/gpio/gpio-xgene-sb.c
index a7b8f8f..d57068b 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 @@
 	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 @@
 {
 	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 @@
 };
 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,