usb: chipidea: usbmisc: prepare driver to handle more than one soc

This attaches the usbmisc_ops to the of_device_id data and
makes it possible to define special functions per soc.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
[Alex: fixed one case of line-too-long and one bogus cast to void ptr]
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/chipidea/usbmisc_imx.c

@@ -19,13 +19,14 @@
 
 #define USB_DEV_MAX 4
 
-#define BM_OVER_CUR_DIS		BIT(7)
+#define MX6_BM_OVER_CUR_DIS		BIT(7)
 
 struct imx_usbmisc {
 	void __iomem *base;
 	spinlock_t lock;
 	struct clk *clk;
 	struct usbmisc_usb_device usbdev[USB_DEV_MAX];
+	const struct usbmisc_ops *ops;
 };
 
 static struct imx_usbmisc *usbmisc;
@@ -65,7 +66,7 @@ static int usbmisc_imx6q_init(struct device *dev)
 	if (usbdev->disable_oc) {
 		spin_lock_irqsave(&usbmisc->lock, flags);
 		reg = readl(usbmisc->base + usbdev->index * 4);
-		writel(reg | BM_OVER_CUR_DIS,
+		writel(reg | MX6_BM_OVER_CUR_DIS,
 			usbmisc->base + usbdev->index * 4);
 		spin_unlock_irqrestore(&usbmisc->lock, flags);
 	}
@@ -78,7 +79,10 @@ static const struct usbmisc_ops imx6q_usbmisc_ops = {
 };
 
 static const struct of_device_id usbmisc_imx_dt_ids[] = {
-	{ .compatible = "fsl,imx6q-usbmisc"},
+	{
+		.compatible = "fsl,imx6q-usbmisc",
+		.data = &imx6q_usbmisc_ops,
+	},
 	{ /* sentinel */ }
 };
 
@@ -87,6 +91,7 @@ static int usbmisc_imx_probe(struct platform_device *pdev)
 	struct resource	*res;
 	struct imx_usbmisc *data;
 	int ret;
+	struct of_device_id *tmp_dev;
 
 	if (usbmisc)
 		return -EBUSY;
@@ -116,8 +121,11 @@ static int usbmisc_imx_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	tmp_dev = (struct of_device_id *)
+		of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
+	data->ops = (const struct usbmisc_ops *)tmp_dev->data;
 	usbmisc = data;
-	ret = usbmisc_set_ops(&imx6q_usbmisc_ops);
+	ret = usbmisc_set_ops(data->ops);
 	if (ret) {
 		usbmisc = NULL;
 		clk_disable_unprepare(data->clk);
@@ -129,7 +137,7 @@ static int usbmisc_imx_probe(struct platform_device *pdev)
 
 static int usbmisc_imx_remove(struct platform_device *pdev)
 {
-	usbmisc_unset_ops(&imx6q_usbmisc_ops);
+	usbmisc_unset_ops(usbmisc->ops);
 	clk_disable_unprepare(usbmisc->clk);
 	usbmisc = NULL;
 	return 0;