[mirror_ubuntu-artful-kernel.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/module.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;
	struct usb_hcd *usb_hcd;
	struct wusbhc *wusbhc;
	struct whc *whc;
	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");
		return -ENOMEM;
	}

	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 __used 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>
7e6133aa DV	19	#include <linux/init.h>
6eb0de82	20	#include <linux/module.h>
7e6133aa DV	21	#include <linux/uwb/umc.h>
	22
	23	#include "../../wusbcore/wusbhc.h"
	24
	25	#include "whcd.h"
	26
	27	/*
	28	* One time initialization.
	29	*
	30	* Nothing to do here.
	31	*/
	32	static int whc_reset(struct usb_hcd *usb_hcd)
	33	{
	34	return 0;
	35	}
	36
	37	/*
	38	* Start the wireless host controller.
	39	*
	40	* Start device notification.
	41	*
	42	* Put hc into run state, set DNTS parameters.
	43	*/
	44	static int whc_start(struct usb_hcd *usb_hcd)
	45	{
	46	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	47	struct whc *whc = wusbhc_to_whc(wusbhc);
	48	u8 bcid;
	49	int ret;
	50
	51	mutex_lock(&wusbhc->mutex);
	52
	53	le_writel(WUSBINTR_GEN_CMD_DONE
	54	\| WUSBINTR_HOST_ERR
	55	\| WUSBINTR_ASYNC_SCHED_SYNCED
	56	\| WUSBINTR_DNTS_INT
	57	\| WUSBINTR_ERR_INT
	58	\| WUSBINTR_INT,
	59	whc->base + WUSBINTR);
	60
	61	/* set cluster ID */
	62	bcid = wusb_cluster_id_get();
	63	ret = whc_set_cluster_id(whc, bcid);
	64	if (ret < 0)
	65	goto out;
	66	wusbhc->cluster_id = bcid;
	67
	68	/* start HC */
	69	whc_write_wusbcmd(whc, WUSBCMD_RUN, WUSBCMD_RUN);
	70
	71	usb_hcd->uses_new_polling = 1;
541c7d43	72	set_bit(HCD_FLAG_POLL_RH, &usb_hcd->flags);
7e6133aa DV	73	usb_hcd->state = HC_STATE_RUNNING;
	74
	75	out:
	76	mutex_unlock(&wusbhc->mutex);
	77	return ret;
	78	}
	79
	80
	81	/*
	82	* Stop the wireless host controller.
	83	*
	84	* Stop device notification.
	85	*
	86	* Wait for pending transfer to stop? Put hc into stop state?
	87	*/
	88	static void whc_stop(struct usb_hcd *usb_hcd)
	89	{
	90	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	91	struct whc *whc = wusbhc_to_whc(wusbhc);
	92
	93	mutex_lock(&wusbhc->mutex);
	94
7e6133aa DV	95	/* stop HC */
	96	le_writel(0, whc->base + WUSBINTR);
	97	whc_write_wusbcmd(whc, WUSBCMD_RUN, 0);
	98	whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
	99	WUSBSTS_HCHALTED, WUSBSTS_HCHALTED,
	100	100, "HC to halt");
	101
	102	wusb_cluster_id_put(wusbhc->cluster_id);
	103
	104	mutex_unlock(&wusbhc->mutex);
	105	}
	106
	107	static int whc_get_frame_number(struct usb_hcd *usb_hcd)
	108	{
	109	/* Frame numbers are not applicable to WUSB. */
	110	return -ENOSYS;
	111	}
	112
	113
	114	/*
	115	* Queue an URB to the ASL or PZL
	116	*/
	117	static int whc_urb_enqueue(struct usb_hcd usb_hcd, struct urb urb,
	118	gfp_t mem_flags)
	119	{
	120	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	121	struct whc *whc = wusbhc_to_whc(wusbhc);
	122	int ret;
	123
	124	switch (usb_pipetype(urb->pipe)) {
	125	case PIPE_INTERRUPT:
	126	ret = pzl_urb_enqueue(whc, urb, mem_flags);
	127	break;
	128	case PIPE_ISOCHRONOUS:
	129	dev_err(&whc->umc->dev, "isochronous transfers unsupported\n");
	130	ret = -ENOTSUPP;
	131	break;
	132	case PIPE_CONTROL:
	133	case PIPE_BULK:
	134	default:
	135	ret = asl_urb_enqueue(whc, urb, mem_flags);
	136	break;
	137	};
	138
	139	return ret;
	140	}
	141
	142	/*
	143	* Remove a queued URB from the ASL or PZL.
	144	*/
	145	static int whc_urb_dequeue(struct usb_hcd usb_hcd, struct urb urb, int status)
	146	{
	147	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	148	struct whc *whc = wusbhc_to_whc(wusbhc);
	149	int ret;
	150
	151	switch (usb_pipetype(urb->pipe)) {
	152	case PIPE_INTERRUPT:
	153	ret = pzl_urb_dequeue(whc, urb, status);
	154	break;
	155	case PIPE_ISOCHRONOUS:
	156	ret = -ENOTSUPP;
	157	break;
	158	case PIPE_CONTROL:
159	case PIPE_BULK:
160	default:
161	ret = asl_urb_dequeue(whc, urb, status);
162	break;
163	};
164
165	return ret;
166	}
167
168	/*
169	* Wait for all URBs to the endpoint to be completed, then delete the
170	* qset.
171	*/
172	static void whc_endpoint_disable(struct usb_hcd *usb_hcd,
173	struct usb_host_endpoint *ep)
174	{
175	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
176	struct whc *whc = wusbhc_to_whc(wusbhc);
177	struct whc_qset *qset;
178
179	qset = ep->hcpriv;
180	if (qset) {
181	ep->hcpriv = NULL;
182	if (usb_endpoint_xfer_bulk(&ep->desc)
183	\|\| usb_endpoint_xfer_control(&ep->desc))
184	asl_qset_delete(whc, qset);
185	else
186	pzl_qset_delete(whc, qset);
187	}
188	}
189
7f0406db DV	190	static void whc_endpoint_reset(struct usb_hcd *usb_hcd,
	191	struct usb_host_endpoint *ep)
	192	{
	193	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	194	struct whc *whc = wusbhc_to_whc(wusbhc);
	195	struct whc_qset *qset;
831baa49 DV	196	unsigned long flags;
	197
	198	spin_lock_irqsave(&whc->lock, flags);
7f0406db DV	199
	200	qset = ep->hcpriv;
	201	if (qset) {
	202	qset->remove = 1;
831baa49	203	qset->reset = 1;
7f0406db DV	204
	205	if (usb_endpoint_xfer_bulk(&ep->desc)
	206	\|\| usb_endpoint_xfer_control(&ep->desc))
	207	queue_work(whc->workqueue, &whc->async_work);
	208	else
	209	queue_work(whc->workqueue, &whc->periodic_work);
7f0406db	210	}
831baa49 DV	211
831baa49 DV	212	spin_unlock_irqrestore(&whc->lock, flags);
7f0406db DV	213	}
	214
	215
7e6133aa DV	216	static struct hc_driver whc_hc_driver = {
	217	.description = "whci-hcd",
	218	.product_desc = "Wireless host controller",
	219	.hcd_priv_size = sizeof(struct whc) - sizeof(struct usb_hcd),
	220	.irq = whc_int_handler,
	221	.flags = HCD_USB2,
	222
	223	.reset = whc_reset,
	224	.start = whc_start,
	225	.stop = whc_stop,
	226	.get_frame_number = whc_get_frame_number,
	227	.urb_enqueue = whc_urb_enqueue,
	228	.urb_dequeue = whc_urb_dequeue,
	229	.endpoint_disable = whc_endpoint_disable,
7f0406db	230	.endpoint_reset = whc_endpoint_reset,
7e6133aa DV	231
	232	.hub_status_data = wusbhc_rh_status_data,
	233	.hub_control = wusbhc_rh_control,
	234	.bus_suspend = wusbhc_rh_suspend,
	235	.bus_resume = wusbhc_rh_resume,
	236	.start_port_reset = wusbhc_rh_start_port_reset,
	237	};
	238
	239	static int whc_probe(struct umc_dev *umc)
	240	{
3821bf4a	241	int ret;
7e6133aa	242	struct usb_hcd *usb_hcd;
3821bf4a DC	243	struct wusbhc *wusbhc;
3821bf4a DC	244	struct whc *whc;
7e6133aa DV	245	struct device *dev = &umc->dev;
	246
	247	usb_hcd = usb_create_hcd(&whc_hc_driver, dev, "whci");
	248	if (usb_hcd == NULL) {
	249	dev_err(dev, "unable to create hcd\n");
3821bf4a	250	return -ENOMEM;
7e6133aa DV	251	}
	252
	253	usb_hcd->wireless = 1;
294a39e7	254	usb_hcd->self.sg_tablesize = 2048; /* somewhat arbitrary */
7e6133aa DV	255
	256	wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	257	whc = wusbhc_to_whc(wusbhc);
	258	whc->umc = umc;
	259
	260	ret = whc_init(whc);
	261	if (ret)
	262	goto error;
	263
	264	wusbhc->dev = dev;
	265	wusbhc->uwb_rc = uwb_rc_get_by_grandpa(umc->dev.parent);
	266	if (!wusbhc->uwb_rc) {
	267	ret = -ENODEV;
	268	dev_err(dev, "cannot get radio controller\n");
	269	goto error;
	270	}
	271
	272	if (whc->n_devices > USB_MAXCHILDREN) {
	273	dev_warn(dev, "USB_MAXCHILDREN too low for WUSB adapter (%u ports)\n",
	274	whc->n_devices);
	275	wusbhc->ports_max = USB_MAXCHILDREN;
	276	} else
	277	wusbhc->ports_max = whc->n_devices;
	278	wusbhc->mmcies_max = whc->n_mmc_ies;
	279	wusbhc->start = whc_wusbhc_start;
	280	wusbhc->stop = whc_wusbhc_stop;
	281	wusbhc->mmcie_add = whc_mmcie_add;
	282	wusbhc->mmcie_rm = whc_mmcie_rm;
	283	wusbhc->dev_info_set = whc_dev_info_set;
	284	wusbhc->bwa_set = whc_bwa_set;
	285	wusbhc->set_num_dnts = whc_set_num_dnts;
	286	wusbhc->set_ptk = whc_set_ptk;
	287	wusbhc->set_gtk = whc_set_gtk;
	288
	289	ret = wusbhc_create(wusbhc);
	290	if (ret)
	291	goto error_wusbhc_create;
	292
	293	ret = usb_add_hcd(usb_hcd, whc->umc->irq, IRQF_SHARED);
	294	if (ret) {
	295	dev_err(dev, "cannot add HCD: %d\n", ret);
	296	goto error_usb_add_hcd;
	297	}
	298
	299	ret = wusbhc_b_create(wusbhc);
	300	if (ret) {
	301	dev_err(dev, "WUSBHC phase B setup failed: %d\n", ret);
	302	goto error_wusbhc_b_create;
	303	}
	304
dcc7461e DV	305	whc_dbg_init(whc);
dcc7461e DV	306
7e6133aa DV	307	return 0;
	308
	309	error_wusbhc_b_create:
	310	usb_remove_hcd(usb_hcd);
	311	error_usb_add_hcd:
	312	wusbhc_destroy(wusbhc);
	313	error_wusbhc_create:
	314	uwb_rc_put(wusbhc->uwb_rc);
	315	error:
	316	whc_clean_up(whc);
	317	if (usb_hcd)
	318	usb_put_hcd(usb_hcd);
	319	return ret;
	320	}
	321
	322
	323	static void whc_remove(struct umc_dev *umc)
	324	{
	325	struct usb_hcd *usb_hcd = dev_get_drvdata(&umc->dev);
	326	struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
	327	struct whc *whc = wusbhc_to_whc(wusbhc);
	328
	329	if (usb_hcd) {
dcc7461e	330	whc_dbg_clean_up(whc);
7e6133aa DV	331	wusbhc_b_destroy(wusbhc);
	332	usb_remove_hcd(usb_hcd);
	333	wusbhc_destroy(wusbhc);
	334	uwb_rc_put(wusbhc->uwb_rc);
	335	whc_clean_up(whc);
	336	usb_put_hcd(usb_hcd);
	337	}
	338	}
	339
	340	static struct umc_driver whci_hc_driver = {
	341	.name = "whci-hcd",
	342	.cap_id = UMC_CAP_ID_WHCI_WUSB_HC,
	343	.probe = whc_probe,
	344	.remove = whc_remove,
	345	};
	346
	347	static int __init whci_hc_driver_init(void)
	348	{
	349	return umc_driver_register(&whci_hc_driver);
	350	}
	351	module_init(whci_hc_driver_init);
	352
	353	static void __exit whci_hc_driver_exit(void)
	354	{
	355	umc_driver_unregister(&whci_hc_driver);
	356	}
	357	module_exit(whci_hc_driver_exit);
	358
	359	/* PCI device ID's that we handle (so it gets loaded) */
8170344c	360	static struct pci_device_id __used whci_hcd_id_table[] = {
7e6133aa DV	361	{ PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) },
	362	{ /* empty last entry */ }
	363	};
	364	MODULE_DEVICE_TABLE(pci, whci_hcd_id_table);
	365
	366	MODULE_DESCRIPTION("WHCI Wireless USB host controller driver");
	367	MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
	368	MODULE_LICENSE("GPL");