i2c: switch twl4030-usb to use a resource for irq

use platform_get_irq() for getting irq number passed
to twl4030-usb via twl4030-core.c:add_children()
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

drivers/i2c/chips/twl4030-core.c

@@ -819,9 +819,16 @@ static int add_children(struct twl4030_platform_data *pdata)
 	}
 
 	if (twl_has_usb() && pdata->usb) {
-		pdev = platform_device_alloc("twl4030_usb", -1);
-		if (pdev) {
 		twl = &twl4030_modules[TWL4030_SLAVENUM_NUM0];
+
+		pdev = platform_device_alloc("twl4030_usb", -1);
+		if (!pdev) {
+			pr_debug("%s: can't alloc usb dev\n", DRIVER_NAME);
+			status = -ENOMEM;
+			goto err;
+		}
+
+		if (status == 0) {
 			pdev->dev.parent = &twl->client->dev;
 			device_init_wakeup(&pdev->dev, 1);
 			status = platform_device_add_data(pdev, pdata->usb,
@@ -833,17 +840,26 @@ static int add_children(struct twl4030_platform_data *pdata)
 					status);
 				goto err;
 			}
+		}
+
+		if (status == 0) {
+			struct resource r = {
+				.start = TWL4030_PWRIRQ_USB_PRES,
+				.flags = IORESOURCE_IRQ,
+			};
+
+			status = platform_device_add_resources(pdev, &r, 1);
+		}
+
+		if (status == 0)
 			status = platform_device_add(pdev);
+
 		if (status < 0) {
 			platform_device_put(pdev);
 			dev_dbg(&twl->client->dev,
 					"can't create usb dev, %d\n",
 					status);
 		}
-		} else {
-			pr_debug("%s: can't alloc usb dev\n", DRIVER_NAME);
-			status = -ENOMEM;
-		}
 	}
 
 err:

drivers/i2c/chips/twl4030-usb.c

@@ -684,7 +684,7 @@ static int __init twl4030_usb_probe(struct platform_device *pdev)
 	vbus &= USB_PRES_RISING;
 
 	twl->dev		= &pdev->dev;
-	twl->irq		= TWL4030_PWRIRQ_USB_PRES;
+	twl->irq		= platform_get_irq(pdev, 0);
 	twl->otg.set_host	= twl4030_set_host;
 	twl->otg.set_peripheral	= twl4030_set_peripheral;
 	twl->otg.set_suspend	= twl4030_set_suspend;

include/linux/i2c/twl4030.h

@@ -112,7 +112,7 @@ struct twl4030_platform_data {
 #define TWL4030_MODIRQ_KEYPAD		(TWL4030_IRQ_BASE + 1)
 #define TWL4030_MODIRQ_BCI		(TWL4030_IRQ_BASE + 2)
 #define TWL4030_MODIRQ_MADC		(TWL4030_IRQ_BASE + 3)
-#define TWL4030_MODIRQ_USB		(TWL4030_IRQ_BASE + 4)
+/* #define TWL4030_MODIRQ_USB		(TWL4030_IRQ_BASE + 4) */
 #define TWL4030_MODIRQ_PWR		(TWL4030_IRQ_BASE + 5)
 
 #define TWL4030_PWRIRQ_PWRBTN		(TWL4030_PWR_IRQ_BASE + 0)