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34008dbf MD |
1 | /* |
2 | * Support for the Maxtor OneTouch USB hard drive's button | |
3 | * | |
4 | * Current development and maintenance by: | |
5 | * Copyright (c) 2005 Nick Sillik <n.sillik@temple.edu> | |
6 | * | |
7 | * Initial work by: | |
88789672 | 8 | * Copyright (c) 2003 Erik Thyren <erth7411@student.uu.se> |
34008dbf MD |
9 | * |
10 | * Based on usbmouse.c (Vojtech Pavlik) and xpad.c (Marko Friedemann) | |
11 | * | |
12 | */ | |
13 | ||
14 | /* | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2 of the License, or | |
18 | * (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
28 | * | |
29 | */ | |
30 | ||
34008dbf MD |
31 | #include <linux/kernel.h> |
32 | #include <linux/input.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/module.h> | |
d6450e19 | 36 | #include <linux/usb_ch9.h> |
ae0dadcf | 37 | #include <linux/usb/input.h> |
34008dbf MD |
38 | #include "usb.h" |
39 | #include "onetouch.h" | |
40 | #include "debug.h" | |
41 | ||
42 | void onetouch_release_input(void *onetouch_); | |
43 | ||
44 | struct usb_onetouch { | |
45 | char name[128]; | |
46 | char phys[64]; | |
88789672 | 47 | struct input_dev *dev; /* input device interface */ |
34008dbf MD |
48 | struct usb_device *udev; /* usb device */ |
49 | ||
50 | struct urb *irq; /* urb for interrupt in report */ | |
51 | unsigned char *data; /* input data */ | |
52 | dma_addr_t data_dma; | |
7931e1c6 | 53 | unsigned int is_open:1; |
34008dbf MD |
54 | }; |
55 | ||
7d12e780 | 56 | static void usb_onetouch_irq(struct urb *urb) |
34008dbf MD |
57 | { |
58 | struct usb_onetouch *onetouch = urb->context; | |
59 | signed char *data = onetouch->data; | |
88789672 | 60 | struct input_dev *dev = onetouch->dev; |
34008dbf MD |
61 | int status; |
62 | ||
63 | switch (urb->status) { | |
64 | case 0: /* success */ | |
65 | break; | |
66 | case -ECONNRESET: /* unlink */ | |
67 | case -ENOENT: | |
68 | case -ESHUTDOWN: | |
69 | return; | |
70 | /* -EPIPE: should clear the halt */ | |
71 | default: /* error */ | |
72 | goto resubmit; | |
73 | } | |
74 | ||
88789672 | 75 | input_report_key(dev, ONETOUCH_BUTTON, data[0] & 0x02); |
34008dbf | 76 | input_sync(dev); |
88789672 | 77 | |
34008dbf | 78 | resubmit: |
54e6ecb2 | 79 | status = usb_submit_urb (urb, GFP_ATOMIC); |
34008dbf MD |
80 | if (status) |
81 | err ("can't resubmit intr, %s-%s/input0, status %d", | |
82 | onetouch->udev->bus->bus_name, | |
83 | onetouch->udev->devpath, status); | |
84 | } | |
85 | ||
86 | static int usb_onetouch_open(struct input_dev *dev) | |
87 | { | |
88 | struct usb_onetouch *onetouch = dev->private; | |
89 | ||
7931e1c6 | 90 | onetouch->is_open = 1; |
34008dbf MD |
91 | onetouch->irq->dev = onetouch->udev; |
92 | if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) { | |
93 | err("usb_submit_urb failed"); | |
94 | return -EIO; | |
95 | } | |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
100 | static void usb_onetouch_close(struct input_dev *dev) | |
101 | { | |
102 | struct usb_onetouch *onetouch = dev->private; | |
103 | ||
104 | usb_kill_urb(onetouch->irq); | |
7931e1c6 | 105 | onetouch->is_open = 0; |
34008dbf MD |
106 | } |
107 | ||
7931e1c6 MD |
108 | #ifdef CONFIG_PM |
109 | static void usb_onetouch_pm_hook(struct us_data *us, int action) | |
110 | { | |
111 | struct usb_onetouch *onetouch = (struct usb_onetouch *) us->extra; | |
112 | ||
113 | if (onetouch->is_open) { | |
114 | switch (action) { | |
115 | case US_SUSPEND: | |
116 | usb_kill_urb(onetouch->irq); | |
117 | break; | |
118 | case US_RESUME: | |
119 | if (usb_submit_urb(onetouch->irq, GFP_KERNEL) != 0) | |
120 | err("usb_submit_urb failed"); | |
121 | break; | |
122 | default: | |
123 | break; | |
124 | } | |
125 | } | |
126 | } | |
127 | #endif /* CONFIG_PM */ | |
128 | ||
34008dbf MD |
129 | int onetouch_connect_input(struct us_data *ss) |
130 | { | |
131 | struct usb_device *udev = ss->pusb_dev; | |
132 | struct usb_host_interface *interface; | |
133 | struct usb_endpoint_descriptor *endpoint; | |
134 | struct usb_onetouch *onetouch; | |
88789672 | 135 | struct input_dev *input_dev; |
34008dbf | 136 | int pipe, maxp; |
17efe155 | 137 | int error = -ENOMEM; |
34008dbf MD |
138 | |
139 | interface = ss->pusb_intf->cur_altsetting; | |
140 | ||
d6450e19 NS |
141 | if (interface->desc.bNumEndpoints != 3) |
142 | return -ENODEV; | |
143 | ||
34008dbf | 144 | endpoint = &interface->endpoint[2].desc; |
66722a19 | 145 | if (!usb_endpoint_is_int_in(endpoint)) |
34008dbf MD |
146 | return -ENODEV; |
147 | ||
148 | pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress); | |
149 | maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe)); | |
150 | ||
88789672 DT |
151 | onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL); |
152 | input_dev = input_allocate_device(); | |
153 | if (!onetouch || !input_dev) | |
154 | goto fail1; | |
34008dbf | 155 | |
d6450e19 | 156 | onetouch->data = usb_buffer_alloc(udev, ONETOUCH_PKT_LEN, |
54e6ecb2 | 157 | GFP_ATOMIC, &onetouch->data_dma); |
88789672 DT |
158 | if (!onetouch->data) |
159 | goto fail1; | |
34008dbf MD |
160 | |
161 | onetouch->irq = usb_alloc_urb(0, GFP_KERNEL); | |
88789672 DT |
162 | if (!onetouch->irq) |
163 | goto fail2; | |
34008dbf MD |
164 | |
165 | onetouch->udev = udev; | |
88789672 | 166 | onetouch->dev = input_dev; |
34008dbf | 167 | |
88789672 DT |
168 | if (udev->manufacturer) |
169 | strlcpy(onetouch->name, udev->manufacturer, | |
170 | sizeof(onetouch->name)); | |
171 | if (udev->product) { | |
172 | if (udev->manufacturer) | |
173 | strlcat(onetouch->name, " ", sizeof(onetouch->name)); | |
174 | strlcat(onetouch->name, udev->product, sizeof(onetouch->name)); | |
175 | } | |
34008dbf | 176 | |
88789672 DT |
177 | if (!strlen(onetouch->name)) |
178 | snprintf(onetouch->name, sizeof(onetouch->name), | |
179 | "Maxtor Onetouch %04x:%04x", | |
180 | le16_to_cpu(udev->descriptor.idVendor), | |
181 | le16_to_cpu(udev->descriptor.idProduct)); | |
34008dbf | 182 | |
88789672 DT |
183 | usb_make_path(udev, onetouch->phys, sizeof(onetouch->phys)); |
184 | strlcat(onetouch->phys, "/input0", sizeof(onetouch->phys)); | |
34008dbf | 185 | |
88789672 DT |
186 | input_dev->name = onetouch->name; |
187 | input_dev->phys = onetouch->phys; | |
188 | usb_to_input_id(udev, &input_dev->id); | |
189 | input_dev->cdev.dev = &udev->dev; | |
34008dbf | 190 | |
88789672 DT |
191 | set_bit(EV_KEY, input_dev->evbit); |
192 | set_bit(ONETOUCH_BUTTON, input_dev->keybit); | |
193 | clear_bit(0, input_dev->keybit); | |
34008dbf | 194 | |
88789672 DT |
195 | input_dev->private = onetouch; |
196 | input_dev->open = usb_onetouch_open; | |
197 | input_dev->close = usb_onetouch_close; | |
34008dbf MD |
198 | |
199 | usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data, | |
200 | (maxp > 8 ? 8 : maxp), | |
201 | usb_onetouch_irq, onetouch, endpoint->bInterval); | |
202 | onetouch->irq->transfer_dma = onetouch->data_dma; | |
203 | onetouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
204 | ||
205 | ss->extra_destructor = onetouch_release_input; | |
206 | ss->extra = onetouch; | |
7931e1c6 MD |
207 | #ifdef CONFIG_PM |
208 | ss->suspend_resume_hook = usb_onetouch_pm_hook; | |
209 | #endif | |
34008dbf | 210 | |
17efe155 DT |
211 | error = input_register_device(onetouch->dev); |
212 | if (error) | |
213 | goto fail3; | |
34008dbf MD |
214 | |
215 | return 0; | |
88789672 | 216 | |
17efe155 | 217 | fail3: usb_free_urb(onetouch->irq); |
88789672 DT |
218 | fail2: usb_buffer_free(udev, ONETOUCH_PKT_LEN, |
219 | onetouch->data, onetouch->data_dma); | |
220 | fail1: kfree(onetouch); | |
221 | input_free_device(input_dev); | |
17efe155 | 222 | return error; |
34008dbf MD |
223 | } |
224 | ||
225 | void onetouch_release_input(void *onetouch_) | |
226 | { | |
227 | struct usb_onetouch *onetouch = (struct usb_onetouch *) onetouch_; | |
228 | ||
229 | if (onetouch) { | |
230 | usb_kill_urb(onetouch->irq); | |
88789672 | 231 | input_unregister_device(onetouch->dev); |
34008dbf MD |
232 | usb_free_urb(onetouch->irq); |
233 | usb_buffer_free(onetouch->udev, ONETOUCH_PKT_LEN, | |
234 | onetouch->data, onetouch->data_dma); | |
34008dbf MD |
235 | } |
236 | } |