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90ff96f2 IPG |
1 | /* |
2 | * WUSB devices | |
3 | * sysfs bindings | |
4 | * | |
5 | * Copyright (C) 2007 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 | * Get them out of the way... | |
24 | */ | |
25 | ||
26 | #include <linux/jiffies.h> | |
27 | #include <linux/ctype.h> | |
28 | #include <linux/workqueue.h> | |
29 | #include "wusbhc.h" | |
30 | ||
90ff96f2 IPG |
31 | static ssize_t wusb_disconnect_store(struct device *dev, |
32 | struct device_attribute *attr, | |
33 | const char *buf, size_t size) | |
34 | { | |
35 | struct usb_device *usb_dev; | |
36 | struct wusbhc *wusbhc; | |
37 | unsigned command; | |
38 | u8 port_idx; | |
39 | ||
40 | if (sscanf(buf, "%u", &command) != 1) | |
41 | return -EINVAL; | |
42 | if (command == 0) | |
43 | return size; | |
44 | usb_dev = to_usb_device(dev); | |
45 | wusbhc = wusbhc_get_by_usb_dev(usb_dev); | |
46 | if (wusbhc == NULL) | |
47 | return -ENODEV; | |
48 | ||
49 | mutex_lock(&wusbhc->mutex); | |
50 | port_idx = wusb_port_no_to_idx(usb_dev->portnum); | |
51 | __wusbhc_dev_disable(wusbhc, port_idx); | |
52 | mutex_unlock(&wusbhc->mutex); | |
53 | wusbhc_put(wusbhc); | |
54 | return size; | |
55 | } | |
56 | static DEVICE_ATTR(wusb_disconnect, 0200, NULL, wusb_disconnect_store); | |
57 | ||
58 | static ssize_t wusb_cdid_show(struct device *dev, | |
59 | struct device_attribute *attr, char *buf) | |
60 | { | |
61 | ssize_t result; | |
62 | struct wusb_dev *wusb_dev; | |
63 | ||
64 | wusb_dev = wusb_dev_get_by_usb_dev(to_usb_device(dev)); | |
65 | if (wusb_dev == NULL) | |
66 | return -ENODEV; | |
67 | result = ckhdid_printf(buf, PAGE_SIZE, &wusb_dev->cdid); | |
68 | strcat(buf, "\n"); | |
69 | wusb_dev_put(wusb_dev); | |
70 | return result + 1; | |
71 | } | |
72 | static DEVICE_ATTR(wusb_cdid, 0444, wusb_cdid_show, NULL); | |
73 | ||
74 | static ssize_t wusb_ck_store(struct device *dev, | |
75 | struct device_attribute *attr, | |
76 | const char *buf, size_t size) | |
77 | { | |
78 | int result; | |
79 | struct usb_device *usb_dev; | |
80 | struct wusbhc *wusbhc; | |
81 | struct wusb_ckhdid ck; | |
82 | ||
83 | result = sscanf(buf, | |
84 | "%02hhx %02hhx %02hhx %02hhx " | |
85 | "%02hhx %02hhx %02hhx %02hhx " | |
86 | "%02hhx %02hhx %02hhx %02hhx " | |
87 | "%02hhx %02hhx %02hhx %02hhx\n", | |
88 | &ck.data[0] , &ck.data[1], | |
89 | &ck.data[2] , &ck.data[3], | |
90 | &ck.data[4] , &ck.data[5], | |
91 | &ck.data[6] , &ck.data[7], | |
92 | &ck.data[8] , &ck.data[9], | |
93 | &ck.data[10], &ck.data[11], | |
94 | &ck.data[12], &ck.data[13], | |
95 | &ck.data[14], &ck.data[15]); | |
96 | if (result != 16) | |
97 | return -EINVAL; | |
98 | ||
99 | usb_dev = to_usb_device(dev); | |
100 | wusbhc = wusbhc_get_by_usb_dev(usb_dev); | |
101 | if (wusbhc == NULL) | |
102 | return -ENODEV; | |
103 | result = wusb_dev_4way_handshake(wusbhc, usb_dev->wusb_dev, &ck); | |
eb94ec7a | 104 | memzero_explicit(&ck, sizeof(ck)); |
90ff96f2 IPG |
105 | wusbhc_put(wusbhc); |
106 | return result < 0 ? result : size; | |
107 | } | |
108 | static DEVICE_ATTR(wusb_ck, 0200, NULL, wusb_ck_store); | |
109 | ||
110 | static struct attribute *wusb_dev_attrs[] = { | |
111 | &dev_attr_wusb_disconnect.attr, | |
112 | &dev_attr_wusb_cdid.attr, | |
113 | &dev_attr_wusb_ck.attr, | |
114 | NULL, | |
115 | }; | |
116 | ||
117 | static struct attribute_group wusb_dev_attr_group = { | |
118 | .name = NULL, /* we want them in the same directory */ | |
119 | .attrs = wusb_dev_attrs, | |
120 | }; | |
121 | ||
122 | int wusb_dev_sysfs_add(struct wusbhc *wusbhc, struct usb_device *usb_dev, | |
123 | struct wusb_dev *wusb_dev) | |
124 | { | |
125 | int result = sysfs_create_group(&usb_dev->dev.kobj, | |
126 | &wusb_dev_attr_group); | |
127 | struct device *dev = &usb_dev->dev; | |
128 | if (result < 0) | |
129 | dev_err(dev, "Cannot register WUSB-dev attributes: %d\n", | |
130 | result); | |
131 | return result; | |
132 | } | |
133 | ||
134 | void wusb_dev_sysfs_rm(struct wusb_dev *wusb_dev) | |
135 | { | |
136 | struct usb_device *usb_dev = wusb_dev->usb_dev; | |
137 | if (usb_dev) | |
138 | sysfs_remove_group(&usb_dev->dev.kobj, &wusb_dev_attr_group); | |
139 | } |