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Commit 487d54d1 authored by Neil Zhang's avatar Neil Zhang Committed by Felipe Balbi
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usb: gadget: mv_udc: add otg relative code 



Add otg relative code, make it possible to switch between host and
device.

Signed-off-by: default avatarNeil Zhang <zhangwm@marvell.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 9823a525

drivers/usb/gadget/mv_udc.h

+2 −0
Original line number Diff line number Diff line
@@ -216,6 +216,8 @@ struct mv_udc { 
	struct work_struct	vbus_work;

	struct workqueue_struct *qwork;



	struct otg_transceiver	*transceiver;



	struct mv_usb_platform_data     *pdata;



	/* some SOC has mutiple clock sources for USB*/

drivers/usb/gadget/mv_udc_core.c

+30 −3
Original line number Diff line number Diff line
@@ -1407,6 +1407,20 @@ static int mv_udc_start(struct usb_gadget_driver *driver, 
		return retval;

	}



	if (udc->transceiver) {

		retval = otg_set_peripheral(udc->transceiver, &udc->gadget);

		if (retval) {

			dev_err(&udc->dev->dev,

				"unable to register peripheral to otg\n");

			if (driver->unbind) {

				driver->unbind(&udc->gadget);

				udc->gadget.dev.driver = NULL;

				udc->driver = NULL;

			}

			return retval;

		}

	}



	/* pullup is always on */

	mv_udc_pullup(&udc->gadget, 1);
@@ -2109,7 +2123,12 @@ static int __devexit mv_udc_remove(struct platform_device *dev) 
		destroy_workqueue(udc->qwork);

	}



	if (udc->pdata && udc->pdata->vbus && udc->clock_gating)

	/*

	 * If we have transceiver inited,

	 * then vbus irq will not be requested in udc driver.

	 */

	if (udc->pdata && udc->pdata->vbus

		&& udc->clock_gating && udc->transceiver == NULL)

		free_irq(udc->pdata->vbus->irq, &dev->dev);



	/* free memory allocated in probe */
@@ -2182,6 +2201,11 @@ static int __devinit mv_udc_probe(struct platform_device *dev) 


	udc->dev = dev;



#ifdef CONFIG_USB_OTG_UTILS

	if (pdata->mode == MV_USB_MODE_OTG)

		udc->transceiver = otg_get_transceiver();

#endif



	udc->clknum = pdata->clknum;

	for (clk_i = 0; clk_i < udc->clknum; clk_i++) {

		udc->clk[clk_i] = clk_get(&dev->dev, pdata->clkname[clk_i]);
@@ -2328,7 +2352,9 @@ static int __devinit mv_udc_probe(struct platform_device *dev) 
	eps_init(udc);



	/* VBUS detect: we can disable/enable clock on demand.*/

	if (pdata->vbus) {

	if (udc->transceiver)

		udc->clock_gating = 1;

	else if (pdata->vbus) {

		udc->clock_gating = 1;

		retval = request_threaded_irq(pdata->vbus->irq, NULL,

				mv_udc_vbus_irq, IRQF_ONESHOT, "vbus", udc);
@@ -2371,7 +2397,8 @@ static int __devinit mv_udc_probe(struct platform_device *dev) 
	return 0;



err_unregister:

	if (udc->pdata && udc->pdata->vbus && udc->clock_gating)

	if (udc->pdata && udc->pdata->vbus

		&& udc->clock_gating && udc->transceiver == NULL)

		free_irq(pdata->vbus->irq, &dev->dev);

	device_unregister(&udc->gadget.dev);

err_free_irq: