linux-kernel - [PATCH 2/2] USB: ehci-s5p: Add to get interrupt from DT

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Date:	Thu, 27 Dec 2012 03:42:21 +0900
From:	Dongjin Kim <tobetter@...il.com>
To:	linux-samsung-soc@...r.kernel.org
Cc:	Dongjin Kim <tobetter@...il.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] USB: ehci-s5p: Add to get interrupt from DT

This patch support to get interrupt resource from device tree as well as
platform device if ehci node is defined in device tree and it's irq is
described.

Signed-off-by: Dongjin Kim <tobetter@...il.com>
---
 drivers/usb/host/ehci-s5p.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index 319dcfa..0fc5e5e 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -16,6 +16,7 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/of_gpio.h>
+#include <linux/of_irq.h>
 #include <linux/platform_data/usb-ehci-s5p.h>
 #include <plat/usb-phy.h>
 
@@ -156,7 +157,12 @@ static int s5p_ehci_probe(struct platform_device *pdev)
 		goto fail_io;
 	}
 
-	irq = platform_get_irq(pdev, 0);
+	if (pdev->dev.of_node)
+		irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
+	else {
+		irq = platform_get_irq(pdev, 0);
+	}
+
 	if (!irq) {
 		dev_err(&pdev->dev, "Failed to get IRQ\n");
 		err = -ENODEV;
-- 
1.7.10.4

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