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Commit aac16b63 authored by Chao Xie's avatar Chao Xie Committed by Felipe Balbi
Browse files

usb: gadget: mv_udc: use udc_start and udc_stop functions 



This patches converts the driver into the new style start/stop
interface. As a result the driver no longer uses the static
global the_conroller variable.

Signed-off-by: default avatarChao Xie <chao.xie@marvell.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 38b3ad56

drivers/usb/gadget/mv_udc_core.c

+35 −44
Original line number Diff line number Diff line
@@ -61,9 +61,6 @@ static DECLARE_COMPLETION(release_done); 
static const char driver_name[] = "mv_udc";

static const char driver_desc[] = DRIVER_DESC;



/* controller device global variable */

static struct mv_udc	*the_controller;



static void nuke(struct mv_ep *ep, int status);

static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver);
@@ -1268,9 +1265,8 @@ static int mv_udc_pullup(struct usb_gadget *gadget, int is_on) 
	return retval;

}



static int mv_udc_start(struct usb_gadget_driver *driver,

		int (*bind)(struct usb_gadget *, struct usb_gadget_driver *));

static int mv_udc_stop(struct usb_gadget_driver *driver);

static int mv_udc_start(struct usb_gadget *, struct usb_gadget_driver *);

static int mv_udc_stop(struct usb_gadget *, struct usb_gadget_driver *);

/* device controller usb_gadget_ops structure */

static const struct usb_gadget_ops mv_ops = {
@@ -1285,8 +1281,8 @@ static const struct usb_gadget_ops mv_ops = { 


	/* D+ pullup, software-controlled connect/disconnect to USB host */

	.pullup		= mv_udc_pullup,

	.start		= mv_udc_start,

	.stop		= mv_udc_stop,

	.udc_start	= mv_udc_start,

	.udc_stop	= mv_udc_stop,

};



static int eps_init(struct mv_udc *udc)
@@ -1373,15 +1369,14 @@ static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver) 
	}

}



static int mv_udc_start(struct usb_gadget_driver *driver,

		int (*bind)(struct usb_gadget *, struct usb_gadget_driver *))

static int mv_udc_start(struct usb_gadget *gadget,

		struct usb_gadget_driver *driver)

{

	struct mv_udc *udc = the_controller;

	struct mv_udc *udc;

	int retval = 0;

	unsigned long flags;



	if (!udc)

		return -ENODEV;

	udc = container_of(gadget, struct mv_udc, gadget);



	if (udc->driver)

		return -EBUSY;
@@ -1399,26 +1394,14 @@ static int mv_udc_start(struct usb_gadget_driver *driver, 


	spin_unlock_irqrestore(&udc->lock, flags);



	retval = bind(&udc->gadget, driver);

	if (retval) {

		dev_err(&udc->dev->dev, "bind to driver %s --> %d\n",

				driver->driver.name, retval);

		udc->driver = NULL;

		udc->gadget.dev.driver = NULL;

		return retval;

	}



	if (!IS_ERR_OR_NULL(udc->transceiver)) {

		retval = otg_set_peripheral(udc->transceiver->otg,

					&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;

			}

			udc->gadget.dev.driver = NULL;

			return retval;

		}

	}
@@ -1433,13 +1416,13 @@ static int mv_udc_start(struct usb_gadget_driver *driver, 
	return 0;

}



static int mv_udc_stop(struct usb_gadget_driver *driver)

static int mv_udc_stop(struct usb_gadget *gadget,

		struct usb_gadget_driver *driver)

{

	struct mv_udc *udc = the_controller;

	struct mv_udc *udc;

	unsigned long flags;



	if (!udc)

		return -ENODEV;

	udc = container_of(gadget, struct mv_udc, gadget);



	spin_lock_irqsave(&udc->lock, flags);
@@ -1454,7 +1437,6 @@ static int mv_udc_stop(struct usb_gadget_driver *driver) 
	spin_unlock_irqrestore(&udc->lock, flags);



	/* unbind gadget driver */

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

	udc->gadget.dev.driver = NULL;

	udc->driver = NULL;
@@ -1472,10 +1454,13 @@ static void mv_set_ptc(struct mv_udc *udc, u32 mode) 


static void prime_status_complete(struct usb_ep *ep, struct usb_request *_req)

{

	struct mv_udc *udc = the_controller;

	struct mv_ep *mvep = container_of(ep, struct mv_ep, ep);

	struct mv_req *req = container_of(_req, struct mv_req, req);

	struct mv_udc *udc;

	unsigned long flags;



	udc = mvep->udc;



	dev_info(&udc->dev->dev, "switch to test mode %d\n", req->test_mode);



	spin_lock_irqsave(&udc->lock, flags);
@@ -2123,16 +2108,20 @@ static void mv_udc_vbus_work(struct work_struct *work) 
/* release device structure */

static void gadget_release(struct device *_dev)

{

	struct mv_udc *udc = the_controller;

	struct mv_udc *udc;



	udc = dev_get_drvdata(_dev);



	complete(udc->done);

}



static int mv_udc_remove(struct platform_device *dev)

{

	struct mv_udc *udc = the_controller;

	struct mv_udc *udc;

	int clk_i;



	udc = platform_get_drvdata(dev);



	usb_del_gadget_udc(&udc->gadget);



	if (udc->qwork) {
@@ -2183,8 +2172,6 @@ static int mv_udc_remove(struct platform_device *dev) 
	wait_for_completion(udc->done);

	kfree(udc);



	the_controller = NULL;



	return 0;

}
@@ -2209,7 +2196,6 @@ static int mv_udc_probe(struct platform_device *dev) 
		return -ENOMEM;

	}



	the_controller = udc;

	udc->done = &release_done;

	udc->pdata = dev->dev.platform_data;

	spin_lock_init(&udc->lock);
@@ -2400,6 +2386,7 @@ static int mv_udc_probe(struct platform_device *dev) 
	if (retval)

		goto err_unregister;



	platform_set_drvdata(dev, udc);

	dev_info(&dev->dev, "successful probe UDC device %s clock gating.\n",

		udc->clock_gating ? "with" : "without");
@@ -2431,15 +2418,16 @@ err_iounmap_capreg: 
err_put_clk:

	for (clk_i--; clk_i >= 0; clk_i--)

		clk_put(udc->clk[clk_i]);

	the_controller = NULL;

	kfree(udc);

	return retval;

}



#ifdef CONFIG_PM

static int mv_udc_suspend(struct device *_dev)

static int mv_udc_suspend(struct device *dev)

{

	struct mv_udc *udc = the_controller;

	struct mv_udc *udc;



	udc = dev_get_drvdata(dev);



	/* if OTG is enabled, the following will be done in OTG driver*/

	if (!IS_ERR_OR_NULL(udc->transceiver))
@@ -2469,11 +2457,13 @@ static int mv_udc_suspend(struct device *_dev) 
	return 0;

}



static int mv_udc_resume(struct device *_dev)

static int mv_udc_resume(struct device *dev)

{

	struct mv_udc *udc = the_controller;

	struct mv_udc *udc;

	int retval;



	udc = dev_get_drvdata(dev);



	/* if OTG is enabled, the following will be done in OTG driver*/

	if (!IS_ERR_OR_NULL(udc->transceiver))

		return 0;
@@ -2501,9 +2491,10 @@ static const struct dev_pm_ops mv_udc_pm_ops = { 


static void mv_udc_shutdown(struct platform_device *dev)

{

	struct mv_udc *udc = the_controller;

	struct mv_udc *udc;

	u32 mode;



	udc = platform_get_drvdata(dev);

	/* reset controller mode to IDLE */

	mv_udc_enable(udc);

	mode = readl(&udc->op_regs->usbmode);