linux-kernel - [PATCH v3 2/7] extcon: usb-gpio: add support for ACPI gpio interface

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Message-Id: <1457423628-3183-3-git-send-email-baolu.lu@linux.intel.com>
Date:	Tue,  8 Mar 2016 15:53:43 +0800
From:	Lu Baolu <baolu.lu@...ux.intel.com>
To:	Felipe Balbi <balbi@...nel.org>,
	Mathias Nyman <mathias.nyman@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Lee Jones <lee.jones@...aro.org>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH v3 2/7] extcon: usb-gpio: add support for ACPI gpio interface

GPIO resource could be retrieved through APCI as well.

Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
Reviewed-by: Felipe Balbi <balbi@...nel.org>
Acked-by: Chanwoo Choi <cw00.choi@...sung.com>
---
 drivers/extcon/extcon-usb-gpio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/extcon/extcon-usb-gpio.c b/drivers/extcon/extcon-usb-gpio.c
index af9c8b0..472c431 100644
--- a/drivers/extcon/extcon-usb-gpio.c
+++ b/drivers/extcon/extcon-usb-gpio.c
@@ -26,6 +26,7 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/workqueue.h>
+#include <linux/acpi.h>
 
 #define USB_GPIO_DEBOUNCE_MS	20	/* ms */
 
@@ -91,7 +92,7 @@ static int usb_extcon_probe(struct platform_device *pdev)
 	struct usb_extcon_info *info;
 	int ret;
 
-	if (!np)
+	if (!np && !ACPI_HANDLE(dev))
 		return -EINVAL;
 
 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
-- 
2.1.4