usb: dwc3: let non-DT platforms pass tx-fifo-resize flag;

in case we're not in a DT boot, we should
still be able to tell the driver how to behave.

In order to be able to pass flags to the driver,
we introduce platform_data structure which the
core driver should use.

Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc3/core.c

@@ -37,6 +37,7 @@
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
 
+#include "platform_data.h"
 #include "core.h"
 #include "gadget.h"
 #include "io.h"
@@ -350,6 +351,7 @@ static void dwc3_core_exit(struct dwc3 *dwc)
 
 static int dwc3_probe(struct platform_device *pdev)
 {
+	struct dwc3_platform_data *pdata = pdev->dev.platform_data;
 	struct device_node	*node = pdev->dev.of_node;
 	struct resource		*res;
 	struct dwc3		*dwc;
@@ -412,9 +414,13 @@ static int dwc3_probe(struct platform_device *pdev)
 	if (node) {
 		dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0);
 		dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1);
+
+		dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
 	} else {
 		dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
 		dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
+
+		dwc->needs_fifo_resize = pdata->tx_fifo_resize;
 	}
 
 	if (IS_ERR(dwc->usb2_phy)) {
@@ -472,8 +478,6 @@ static int dwc3_probe(struct platform_device *pdev)
 	else
 		dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
 
-	dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
-
 	pm_runtime_enable(dev);
 	pm_runtime_get_sync(dev);
 	pm_runtime_forbid(dev);

drivers/usb/dwc3/platform_data.h

@@ -0,0 +1,22 @@
+/**
+ * platform_data.h - USB DWC3 Platform Data Support
+ *
+ * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
+ * Author: Felipe Balbi <balbi@ti.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2  of
+ * the License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+struct dwc3_platform_data {
+	bool tx_fifo_resize;
+};