gpio: intel-mid: Pass irqchip when adding gpiochip

We need to convert all old gpio irqchips to pass the irqchip
setup along when adding the gpio_chip. For more info see
drivers/gpio/TODO.

For chained irqchips this is a pretty straight-forward
conversion.

Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: David Cohen <david.a.cohen@linux.intel.com>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/gpio/gpio-intel-mid.c

@@ -329,6 +329,7 @@ static int intel_gpio_probe(struct pci_dev *pdev,
 	u32 gpio_base;
 	u32 irq_base;
 	int retval;
+	struct gpio_irq_chip *girq;
 	struct intel_mid_gpio_ddata *ddata =
 				(struct intel_mid_gpio_ddata *)id->driver_data;
 
@@ -369,31 +370,29 @@ static int intel_gpio_probe(struct pci_dev *pdev,
 
 	spin_lock_init(&priv->lock);
 
+	girq = &priv->chip.irq;
+	girq->chip = &intel_mid_irqchip;
+	girq->parent_handler = intel_mid_irq_handler;
+	girq->num_parents = 1;
+	girq->parents = devm_kcalloc(&pdev->dev, girq->num_parents,
+				     sizeof(*girq->parents),
+				     GFP_KERNEL);
+	if (!girq->parents)
+		return -ENOMEM;
+	girq->parents[0] = pdev->irq;
+	girq->first = irq_base;
+	girq->default_type = IRQ_TYPE_NONE;
+	girq->handler = handle_simple_irq;
+
+	intel_mid_irq_init_hw(priv);
+
 	pci_set_drvdata(pdev, priv);
 	retval = devm_gpiochip_add_data(&pdev->dev, &priv->chip, priv);
 	if (retval) {
 		dev_err(&pdev->dev, "gpiochip_add error %d\n", retval);
 		return retval;
 	}
 
-	retval = gpiochip_irqchip_add(&priv->chip,
-				      &intel_mid_irqchip,
-				      irq_base,
-				      handle_simple_irq,
-				      IRQ_TYPE_NONE);
-	if (retval) {
-		dev_err(&pdev->dev,
-			"could not connect irqchip to gpiochip\n");
-		return retval;
-	}
-
-	intel_mid_irq_init_hw(priv);
-
-	gpiochip_set_chained_irqchip(&priv->chip,
-				     &intel_mid_irqchip,
-				     pdev->irq,
-				     intel_mid_irq_handler);
-
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_allow(&pdev->dev);