[deliverable/linux.git] / drivers / usb / host / whci / hcd.c

/*
 * Wireless Host Controller (WHC) driver.
 *
 * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 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/>.
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/uwb/umc.h>

#include "../../wusbcore/wusbhc.h"

#include "whcd.h"

/*
 * One time initialization.
 *
 * Nothing to do here.
 */
static int whc_reset(struct usb_hcd *usb_hcd)
{
	return 0;
}

/*
 * Start the wireless host controller.
 *
 * Start device notification.
 *
 * Put hc into run state, set DNTS parameters.
 */
static int whc_start(struct usb_hcd *usb_hcd)
{
	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	struct whc *whc = wusbhc_to_whc(wusbhc);
	u8 bcid;
	int ret;

	mutex_lock(&wusbhc->mutex);

	le_writel(WUSBINTR_GEN_CMD_DONE
		  | WUSBINTR_HOST_ERR
		  | WUSBINTR_ASYNC_SCHED_SYNCED
		  | WUSBINTR_DNTS_INT
		  | WUSBINTR_ERR_INT
		  | WUSBINTR_INT,
		  whc->base + WUSBINTR);

	/* set cluster ID */
	bcid = wusb_cluster_id_get();
	ret = whc_set_cluster_id(whc, bcid);
	if (ret < 0)
		goto out;
	wusbhc->cluster_id = bcid;

	/* start HC */
	whc_write_wusbcmd(whc, WUSBCMD_RUN, WUSBCMD_RUN);

	usb_hcd->uses_new_polling = 1;
	set_bit(HCD_FLAG_POLL_RH, &usb_hcd->flags);
	usb_hcd->state = HC_STATE_RUNNING;

out:
	mutex_unlock(&wusbhc->mutex);
	return ret;
}


/*
 * Stop the wireless host controller.
 *
 * Stop device notification.
 *
 * Wait for pending transfer to stop? Put hc into stop state?
 */
static void whc_stop(struct usb_hcd *usb_hcd)
{
	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	struct whc *whc = wusbhc_to_whc(wusbhc);

	mutex_lock(&wusbhc->mutex);

	/* stop HC */
	le_writel(0, whc->base + WUSBINTR);
	whc_write_wusbcmd(whc, WUSBCMD_RUN, 0);
	whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
		      WUSBSTS_HCHALTED, WUSBSTS_HCHALTED,
		      100, "HC to halt");

	wusb_cluster_id_put(wusbhc->cluster_id);

	mutex_unlock(&wusbhc->mutex);
}

static int whc_get_frame_number(struct usb_hcd *usb_hcd)
{
	/* Frame numbers are not applicable to WUSB. */
	return -ENOSYS;
}


/*
 * Queue an URB to the ASL or PZL
 */
static int whc_urb_enqueue(struct usb_hcd *usb_hcd, struct urb *urb,
			   gfp_t mem_flags)
{
	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	struct whc *whc = wusbhc_to_whc(wusbhc);
	int ret;

	switch (usb_pipetype(urb->pipe)) {
	case PIPE_INTERRUPT:
		ret = pzl_urb_enqueue(whc, urb, mem_flags);
		break;
	case PIPE_ISOCHRONOUS:
		dev_err(&whc->umc->dev, "isochronous transfers unsupported\n");
		ret = -ENOTSUPP;
		break;
	case PIPE_CONTROL:
	case PIPE_BULK:
	default:
		ret = asl_urb_enqueue(whc, urb, mem_flags);
		break;
	};

	return ret;
}

/*
 * Remove a queued URB from the ASL or PZL.
 */
static int whc_urb_dequeue(struct usb_hcd *usb_hcd, struct urb *urb, int status)
{
	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	struct whc *whc = wusbhc_to_whc(wusbhc);
	int ret;

	switch (usb_pipetype(urb->pipe)) {
	case PIPE_INTERRUPT:
		ret = pzl_urb_dequeue(whc, urb, status);
		break;
	case PIPE_ISOCHRONOUS:
		ret = -ENOTSUPP;
		break;
	case PIPE_CONTROL:
	case PIPE_BULK:
	default:
		ret = asl_urb_dequeue(whc, urb, status);
		break;
	};

	return ret;
}

/*
 * Wait for all URBs to the endpoint to be completed, then delete the
 * qset.
 */
static void whc_endpoint_disable(struct usb_hcd *usb_hcd,
				 struct usb_host_endpoint *ep)
{
	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	struct whc *whc = wusbhc_to_whc(wusbhc);
	struct whc_qset *qset;

	qset = ep->hcpriv;
	if (qset) {
		ep->hcpriv = NULL;
		if (usb_endpoint_xfer_bulk(&ep->desc)
		    || usb_endpoint_xfer_control(&ep->desc))
			asl_qset_delete(whc, qset);
		else
			pzl_qset_delete(whc, qset);
	}
}

static void whc_endpoint_reset(struct usb_hcd *usb_hcd,
			       struct usb_host_endpoint *ep)
{
	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	struct whc *whc = wusbhc_to_whc(wusbhc);
	struct whc_qset *qset;
	unsigned long flags;

	spin_lock_irqsave(&whc->lock, flags);

	qset = ep->hcpriv;
	if (qset) {
		qset->remove = 1;
		qset->reset = 1;

		if (usb_endpoint_xfer_bulk(&ep->desc)
		    || usb_endpoint_xfer_control(&ep->desc))
			queue_work(whc->workqueue, &whc->async_work);
		else
			queue_work(whc->workqueue, &whc->periodic_work);
	}

	spin_unlock_irqrestore(&whc->lock, flags);
}


static struct hc_driver whc_hc_driver = {
	.description = "whci-hcd",
	.product_desc = "Wireless host controller",
	.hcd_priv_size = sizeof(struct whc) - sizeof(struct usb_hcd),
	.irq = whc_int_handler,
	.flags = HCD_USB2,

	.reset = whc_reset,
	.start = whc_start,
	.stop = whc_stop,
	.get_frame_number = whc_get_frame_number,
	.urb_enqueue = whc_urb_enqueue,
	.urb_dequeue = whc_urb_dequeue,
	.endpoint_disable = whc_endpoint_disable,
	.endpoint_reset = whc_endpoint_reset,

	.hub_status_data = wusbhc_rh_status_data,
	.hub_control = wusbhc_rh_control,
	.bus_suspend = wusbhc_rh_suspend,
	.bus_resume = wusbhc_rh_resume,
	.start_port_reset = wusbhc_rh_start_port_reset,
};

static int whc_probe(struct umc_dev *umc)
{
	int ret = -ENOMEM;
	struct usb_hcd *usb_hcd;
	struct wusbhc *wusbhc = NULL;
	struct whc *whc = NULL;
	struct device *dev = &umc->dev;

	usb_hcd = usb_create_hcd(&whc_hc_driver, dev, "whci");
	if (usb_hcd == NULL) {
		dev_err(dev, "unable to create hcd\n");
		goto error;
	}

	usb_hcd->wireless = 1;
	usb_hcd->self.sg_tablesize = 2048; /* somewhat arbitrary */

	wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	whc = wusbhc_to_whc(wusbhc);
	whc->umc = umc;

	ret = whc_init(whc);
	if (ret)
		goto error;

	wusbhc->dev = dev;
	wusbhc->uwb_rc = uwb_rc_get_by_grandpa(umc->dev.parent);
	if (!wusbhc->uwb_rc) {
		ret = -ENODEV;
		dev_err(dev, "cannot get radio controller\n");
		goto error;
	}

	if (whc->n_devices > USB_MAXCHILDREN) {
		dev_warn(dev, "USB_MAXCHILDREN too low for WUSB adapter (%u ports)\n",
			 whc->n_devices);
		wusbhc->ports_max = USB_MAXCHILDREN;
	} else
		wusbhc->ports_max = whc->n_devices;
	wusbhc->mmcies_max      = whc->n_mmc_ies;
	wusbhc->start           = whc_wusbhc_start;
	wusbhc->stop            = whc_wusbhc_stop;
	wusbhc->mmcie_add       = whc_mmcie_add;
	wusbhc->mmcie_rm        = whc_mmcie_rm;
	wusbhc->dev_info_set    = whc_dev_info_set;
	wusbhc->bwa_set         = whc_bwa_set;
	wusbhc->set_num_dnts    = whc_set_num_dnts;
	wusbhc->set_ptk         = whc_set_ptk;
	wusbhc->set_gtk         = whc_set_gtk;

	ret = wusbhc_create(wusbhc);
	if (ret)
		goto error_wusbhc_create;

	ret = usb_add_hcd(usb_hcd, whc->umc->irq, IRQF_SHARED);
	if (ret) {
		dev_err(dev, "cannot add HCD: %d\n", ret);
		goto error_usb_add_hcd;
	}

	ret = wusbhc_b_create(wusbhc);
	if (ret) {
		dev_err(dev, "WUSBHC phase B setup failed: %d\n", ret);
		goto error_wusbhc_b_create;
	}

	whc_dbg_init(whc);

	return 0;

error_wusbhc_b_create:
	usb_remove_hcd(usb_hcd);
error_usb_add_hcd:
	wusbhc_destroy(wusbhc);
error_wusbhc_create:
	uwb_rc_put(wusbhc->uwb_rc);
error:
	whc_clean_up(whc);
	if (usb_hcd)
		usb_put_hcd(usb_hcd);
	return ret;
}


static void whc_remove(struct umc_dev *umc)
{
	struct usb_hcd *usb_hcd = dev_get_drvdata(&umc->dev);
	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	struct whc *whc = wusbhc_to_whc(wusbhc);

	if (usb_hcd) {
		whc_dbg_clean_up(whc);
		wusbhc_b_destroy(wusbhc);
		usb_remove_hcd(usb_hcd);
		wusbhc_destroy(wusbhc);
		uwb_rc_put(wusbhc->uwb_rc);
		whc_clean_up(whc);
		usb_put_hcd(usb_hcd);
	}
}

static struct umc_driver whci_hc_driver = {
	.name =		"whci-hcd",
	.cap_id =       UMC_CAP_ID_WHCI_WUSB_HC,
	.probe =	whc_probe,
	.remove =	whc_remove,
};

static int __init whci_hc_driver_init(void)
{
	return umc_driver_register(&whci_hc_driver);
}
module_init(whci_hc_driver_init);

static void __exit whci_hc_driver_exit(void)
{
	umc_driver_unregister(&whci_hc_driver);
}
module_exit(whci_hc_driver_exit);

/* PCI device ID's that we handle (so it gets loaded) */
static struct pci_device_id whci_hcd_id_table[] = {
	{ PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) },
	{ /* empty last entry */ }
};
MODULE_DEVICE_TABLE(pci, whci_hcd_id_table);

MODULE_DESCRIPTION("WHCI Wireless USB host controller driver");
MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
MODULE_LICENSE("GPL");
Commit	Line	Data
7e6133aa DV	1	/*
	2	* Wireless Host Controller (WHC) driver.
	3	*
	4	* Copyright (C) 2007 Cambridge Silicon Radio Ltd.
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License version
	8	* 2 as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*/
7e6133aa DV	18	#include <linux/kernel.h>
	19	#include <linux/init.h>
	20	#include <linux/uwb/umc.h>
	21
	22	#include "../../wusbcore/wusbhc.h"
	23
	24	#include "whcd.h"
	25
	26	/*
	27	* One time initialization.
	28	*
	29	* Nothing to do here.
	30	*/
	31	static int whc_reset(struct usb_hcd *usb_hcd)
	32	{
	33	return 0;
	34	}
	35
	36	/*
	37	* Start the wireless host controller.
	38	*
	39	* Start device notification.
	40	*
	41	* Put hc into run state, set DNTS parameters.
	42	*/
	43	static int whc_start(struct usb_hcd *usb_hcd)
	44	{
	45	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	46	struct whc *whc = wusbhc_to_whc(wusbhc);
	47	u8 bcid;
	48	int ret;
	49
	50	mutex_lock(&wusbhc->mutex);
	51
	52	le_writel(WUSBINTR_GEN_CMD_DONE
	53	\| WUSBINTR_HOST_ERR
	54	\| WUSBINTR_ASYNC_SCHED_SYNCED
	55	\| WUSBINTR_DNTS_INT
	56	\| WUSBINTR_ERR_INT
	57	\| WUSBINTR_INT,
	58	whc->base + WUSBINTR);
	59
	60	/* set cluster ID */
	61	bcid = wusb_cluster_id_get();
	62	ret = whc_set_cluster_id(whc, bcid);
	63	if (ret < 0)
	64	goto out;
	65	wusbhc->cluster_id = bcid;
	66
	67	/* start HC */
	68	whc_write_wusbcmd(whc, WUSBCMD_RUN, WUSBCMD_RUN);
	69
	70	usb_hcd->uses_new_polling = 1;
541c7d43	71	set_bit(HCD_FLAG_POLL_RH, &usb_hcd->flags);
7e6133aa DV	72	usb_hcd->state = HC_STATE_RUNNING;
	73
	74	out:
	75	mutex_unlock(&wusbhc->mutex);
	76	return ret;
	77	}
	78
	79
	80	/*
	81	* Stop the wireless host controller.
	82	*
	83	* Stop device notification.
	84	*
	85	* Wait for pending transfer to stop? Put hc into stop state?
	86	*/
	87	static void whc_stop(struct usb_hcd *usb_hcd)
	88	{
	89	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	90	struct whc *whc = wusbhc_to_whc(wusbhc);
	91
	92	mutex_lock(&wusbhc->mutex);
	93
7e6133aa DV	94	/* stop HC */
	95	le_writel(0, whc->base + WUSBINTR);
	96	whc_write_wusbcmd(whc, WUSBCMD_RUN, 0);
	97	whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
	98	WUSBSTS_HCHALTED, WUSBSTS_HCHALTED,
	99	100, "HC to halt");
	100
	101	wusb_cluster_id_put(wusbhc->cluster_id);
	102
	103	mutex_unlock(&wusbhc->mutex);
	104	}
	105
	106	static int whc_get_frame_number(struct usb_hcd *usb_hcd)
	107	{
	108	/* Frame numbers are not applicable to WUSB. */
	109	return -ENOSYS;
	110	}
	111
	112
	113	/*
	114	* Queue an URB to the ASL or PZL
	115	*/
	116	static int whc_urb_enqueue(struct usb_hcd usb_hcd, struct urb urb,
	117	gfp_t mem_flags)
	118	{
	119	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	120	struct whc *whc = wusbhc_to_whc(wusbhc);
	121	int ret;
	122
	123	switch (usb_pipetype(urb->pipe)) {
	124	case PIPE_INTERRUPT:
	125	ret = pzl_urb_enqueue(whc, urb, mem_flags);
	126	break;
	127	case PIPE_ISOCHRONOUS:
	128	dev_err(&whc->umc->dev, "isochronous transfers unsupported\n");
	129	ret = -ENOTSUPP;
	130	break;
	131	case PIPE_CONTROL:
	132	case PIPE_BULK:
	133	default:
	134	ret = asl_urb_enqueue(whc, urb, mem_flags);
	135	break;
	136	};
	137
	138	return ret;
	139	}
	140
	141	/*
	142	* Remove a queued URB from the ASL or PZL.
	143	*/
	144	static int whc_urb_dequeue(struct usb_hcd usb_hcd, struct urb urb, int status)
	145	{
	146	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	147	struct whc *whc = wusbhc_to_whc(wusbhc);
	148	int ret;
	149
	150	switch (usb_pipetype(urb->pipe)) {
	151	case PIPE_INTERRUPT:
	152	ret = pzl_urb_dequeue(whc, urb, status);
	153	break;
	154	case PIPE_ISOCHRONOUS:
	155	ret = -ENOTSUPP;
	156	break;
	157	case PIPE_CONTROL:
158	case PIPE_BULK:
159	default:
160	ret = asl_urb_dequeue(whc, urb, status);
161	break;
162	};
163
164	return ret;
165	}
166
167	/*
168	* Wait for all URBs to the endpoint to be completed, then delete the
169	* qset.
170	*/
171	static void whc_endpoint_disable(struct usb_hcd *usb_hcd,
172	struct usb_host_endpoint *ep)
173	{
174	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
175	struct whc *whc = wusbhc_to_whc(wusbhc);
176	struct whc_qset *qset;
177
178	qset = ep->hcpriv;
179	if (qset) {
180	ep->hcpriv = NULL;
181	if (usb_endpoint_xfer_bulk(&ep->desc)
182	\|\| usb_endpoint_xfer_control(&ep->desc))
183	asl_qset_delete(whc, qset);
184	else
185	pzl_qset_delete(whc, qset);
186	}
187	}
188
7f0406db DV	189	static void whc_endpoint_reset(struct usb_hcd *usb_hcd,
	190	struct usb_host_endpoint *ep)
	191	{
	192	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	193	struct whc *whc = wusbhc_to_whc(wusbhc);
	194	struct whc_qset *qset;
831baa49 DV	195	unsigned long flags;
	196
	197	spin_lock_irqsave(&whc->lock, flags);
7f0406db DV	198
	199	qset = ep->hcpriv;
	200	if (qset) {
	201	qset->remove = 1;
831baa49	202	qset->reset = 1;
7f0406db DV	203
	204	if (usb_endpoint_xfer_bulk(&ep->desc)
	205	\|\| usb_endpoint_xfer_control(&ep->desc))
	206	queue_work(whc->workqueue, &whc->async_work);
	207	else
	208	queue_work(whc->workqueue, &whc->periodic_work);
7f0406db	209	}
831baa49 DV	210
831baa49 DV	211	spin_unlock_irqrestore(&whc->lock, flags);
7f0406db DV	212	}
	213
	214
7e6133aa DV	215	static struct hc_driver whc_hc_driver = {
	216	.description = "whci-hcd",
	217	.product_desc = "Wireless host controller",
	218	.hcd_priv_size = sizeof(struct whc) - sizeof(struct usb_hcd),
	219	.irq = whc_int_handler,
	220	.flags = HCD_USB2,
	221
	222	.reset = whc_reset,
	223	.start = whc_start,
	224	.stop = whc_stop,
	225	.get_frame_number = whc_get_frame_number,
	226	.urb_enqueue = whc_urb_enqueue,
	227	.urb_dequeue = whc_urb_dequeue,
	228	.endpoint_disable = whc_endpoint_disable,
7f0406db	229	.endpoint_reset = whc_endpoint_reset,
7e6133aa DV	230
	231	.hub_status_data = wusbhc_rh_status_data,
	232	.hub_control = wusbhc_rh_control,
	233	.bus_suspend = wusbhc_rh_suspend,
	234	.bus_resume = wusbhc_rh_resume,
	235	.start_port_reset = wusbhc_rh_start_port_reset,
	236	};
	237
	238	static int whc_probe(struct umc_dev *umc)
	239	{
	240	int ret = -ENOMEM;
	241	struct usb_hcd *usb_hcd;
	242	struct wusbhc *wusbhc = NULL;
	243	struct whc *whc = NULL;
	244	struct device *dev = &umc->dev;
	245
	246	usb_hcd = usb_create_hcd(&whc_hc_driver, dev, "whci");
	247	if (usb_hcd == NULL) {
	248	dev_err(dev, "unable to create hcd\n");
	249	goto error;
	250	}
	251
	252	usb_hcd->wireless = 1;
294a39e7	253	usb_hcd->self.sg_tablesize = 2048; /* somewhat arbitrary */
7e6133aa DV	254
	255	wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	256	whc = wusbhc_to_whc(wusbhc);
	257	whc->umc = umc;
	258
	259	ret = whc_init(whc);
	260	if (ret)
	261	goto error;
	262
	263	wusbhc->dev = dev;
	264	wusbhc->uwb_rc = uwb_rc_get_by_grandpa(umc->dev.parent);
	265	if (!wusbhc->uwb_rc) {
	266	ret = -ENODEV;
	267	dev_err(dev, "cannot get radio controller\n");
	268	goto error;
	269	}
	270
	271	if (whc->n_devices > USB_MAXCHILDREN) {
	272	dev_warn(dev, "USB_MAXCHILDREN too low for WUSB adapter (%u ports)\n",
	273	whc->n_devices);
	274	wusbhc->ports_max = USB_MAXCHILDREN;
	275	} else
	276	wusbhc->ports_max = whc->n_devices;
	277	wusbhc->mmcies_max = whc->n_mmc_ies;
	278	wusbhc->start = whc_wusbhc_start;
	279	wusbhc->stop = whc_wusbhc_stop;
	280	wusbhc->mmcie_add = whc_mmcie_add;
	281	wusbhc->mmcie_rm = whc_mmcie_rm;
	282	wusbhc->dev_info_set = whc_dev_info_set;
	283	wusbhc->bwa_set = whc_bwa_set;
	284	wusbhc->set_num_dnts = whc_set_num_dnts;
	285	wusbhc->set_ptk = whc_set_ptk;
	286	wusbhc->set_gtk = whc_set_gtk;
	287
	288	ret = wusbhc_create(wusbhc);
	289	if (ret)
	290	goto error_wusbhc_create;
	291
	292	ret = usb_add_hcd(usb_hcd, whc->umc->irq, IRQF_SHARED);
	293	if (ret) {
	294	dev_err(dev, "cannot add HCD: %d\n", ret);
	295	goto error_usb_add_hcd;
	296	}
	297
	298	ret = wusbhc_b_create(wusbhc);
	299	if (ret) {
	300	dev_err(dev, "WUSBHC phase B setup failed: %d\n", ret);
	301	goto error_wusbhc_b_create;
	302	}
	303
dcc7461e DV	304	whc_dbg_init(whc);
dcc7461e DV	305
7e6133aa DV	306	return 0;
	307
	308	error_wusbhc_b_create:
	309	usb_remove_hcd(usb_hcd);
	310	error_usb_add_hcd:
	311	wusbhc_destroy(wusbhc);
	312	error_wusbhc_create:
	313	uwb_rc_put(wusbhc->uwb_rc);
	314	error:
	315	whc_clean_up(whc);
	316	if (usb_hcd)
	317	usb_put_hcd(usb_hcd);
	318	return ret;
	319	}
	320
	321
	322	static void whc_remove(struct umc_dev *umc)
	323	{
	324	struct usb_hcd *usb_hcd = dev_get_drvdata(&umc->dev);
	325	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	326	struct whc *whc = wusbhc_to_whc(wusbhc);
	327
	328	if (usb_hcd) {
dcc7461e	329	whc_dbg_clean_up(whc);
7e6133aa DV	330	wusbhc_b_destroy(wusbhc);
	331	usb_remove_hcd(usb_hcd);
	332	wusbhc_destroy(wusbhc);
	333	uwb_rc_put(wusbhc->uwb_rc);
	334	whc_clean_up(whc);
	335	usb_put_hcd(usb_hcd);
	336	}
	337	}
	338
	339	static struct umc_driver whci_hc_driver = {
	340	.name = "whci-hcd",
	341	.cap_id = UMC_CAP_ID_WHCI_WUSB_HC,
	342	.probe = whc_probe,
	343	.remove = whc_remove,
	344	};
	345
	346	static int __init whci_hc_driver_init(void)
	347	{
	348	return umc_driver_register(&whci_hc_driver);
	349	}
	350	module_init(whci_hc_driver_init);
	351
	352	static void __exit whci_hc_driver_exit(void)
	353	{
	354	umc_driver_unregister(&whci_hc_driver);
	355	}
	356	module_exit(whci_hc_driver_exit);
	357
	358	/* PCI device ID's that we handle (so it gets loaded) */
	359	static struct pci_device_id whci_hcd_id_table[] = {
	360	{ PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) },
	361	{ /* empty last entry */ }
	362	};
	363	MODULE_DEVICE_TABLE(pci, whci_hcd_id_table);
	364
	365	MODULE_DESCRIPTION("WHCI Wireless USB host controller driver");
	366	MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
	367	MODULE_LICENSE("GPL");