Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
[sfrench/cifs-2.6.git] / drivers / usb / wusbcore / wa-hc.c
1 /*
2  * Wire Adapter Host Controller Driver
3  * Common items to HWA and DWA based HCDs
4  *
5  * Copyright (C) 2005-2006 Intel Corporation
6  * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License version
10  * 2 as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20  * 02110-1301, USA.
21  *
22  *
23  * FIXME: docs
24  */
25 #include "wusbhc.h"
26 #include "wa-hc.h"
27
28 /**
29  * Assumes
30  *
31  * wa->usb_dev and wa->usb_iface initialized and refcounted,
32  * wa->wa_descr initialized.
33  */
34 int wa_create(struct wahc *wa, struct usb_interface *iface)
35 {
36         int result;
37         struct device *dev = &iface->dev;
38
39         result = wa_rpipes_create(wa);
40         if (result < 0)
41                 goto error_rpipes_create;
42         /* Fill up Data Transfer EP pointers */
43         wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
44         wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
45         wa->xfer_result_size = le16_to_cpu(wa->dti_epd->wMaxPacketSize);
46         wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL);
47         if (wa->xfer_result == NULL)
48                 goto error_xfer_result_alloc;
49         result = wa_nep_create(wa, iface);
50         if (result < 0) {
51                 dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
52                         result);
53                 goto error_nep_create;
54         }
55         return 0;
56
57 error_nep_create:
58         kfree(wa->xfer_result);
59 error_xfer_result_alloc:
60         wa_rpipes_destroy(wa);
61 error_rpipes_create:
62         return result;
63 }
64 EXPORT_SYMBOL_GPL(wa_create);
65
66
67 void __wa_destroy(struct wahc *wa)
68 {
69         if (wa->dti_urb) {
70                 usb_kill_urb(wa->dti_urb);
71                 usb_put_urb(wa->dti_urb);
72                 usb_kill_urb(wa->buf_in_urb);
73                 usb_put_urb(wa->buf_in_urb);
74         }
75         kfree(wa->xfer_result);
76         wa_nep_destroy(wa);
77         wa_rpipes_destroy(wa);
78 }
79 EXPORT_SYMBOL_GPL(__wa_destroy);
80
81 /**
82  * wa_reset_all - reset the WA device
83  * @wa: the WA to be reset
84  *
85  * For HWAs the radio controller and all other PALs are also reset.
86  */
87 void wa_reset_all(struct wahc *wa)
88 {
89         /* FIXME: assuming HWA. */
90         wusbhc_reset_all(wa->wusb);
91 }
92
93 MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
94 MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
95 MODULE_LICENSE("GPL");