blob: 98b89ea9e3123bd94fac382fd4da32803b0280a9 [file] [log] [blame]
Matthew Dharm34008db2005-07-28 14:49:01 -07001/*
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:
Dmitry Torokhov88789672005-09-15 02:01:43 -05008 * Copyright (c) 2003 Erik Thyren <erth7411@student.uu.se>
Matthew Dharm34008db2005-07-28 14:49:01 -07009 *
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
Matthew Dharm34008db2005-07-28 14:49:01 -070031#include <linux/kernel.h>
32#include <linux/input.h>
33#include <linux/init.h>
34#include <linux/slab.h>
35#include <linux/module.h>
David Brownellae0dadc2006-06-13 10:04:34 -070036#include <linux/usb/input.h>
Matthew Dharm34008db2005-07-28 14:49:01 -070037#include "usb.h"
38#include "onetouch.h"
39#include "debug.h"
40
Adrian Bunk43c1e982008-04-28 18:39:37 +030041static void onetouch_release_input(void *onetouch_);
Matthew Dharm34008db2005-07-28 14:49:01 -070042
43struct usb_onetouch {
44 char name[128];
45 char phys[64];
Dmitry Torokhov88789672005-09-15 02:01:43 -050046 struct input_dev *dev; /* input device interface */
Matthew Dharm34008db2005-07-28 14:49:01 -070047 struct usb_device *udev; /* usb device */
48
49 struct urb *irq; /* urb for interrupt in report */
50 unsigned char *data; /* input data */
51 dma_addr_t data_dma;
Matthew Dharm7931e1c2005-12-04 21:56:51 -080052 unsigned int is_open:1;
Matthew Dharm34008db2005-07-28 14:49:01 -070053};
54
David Howells7d12e782006-10-05 14:55:46 +010055static void usb_onetouch_irq(struct urb *urb)
Matthew Dharm34008db2005-07-28 14:49:01 -070056{
57 struct usb_onetouch *onetouch = urb->context;
58 signed char *data = onetouch->data;
Dmitry Torokhov88789672005-09-15 02:01:43 -050059 struct input_dev *dev = onetouch->dev;
Greg Kroah-Hartman62e5a332007-07-18 10:58:02 -070060 int status = urb->status;
61 int retval;
Matthew Dharm34008db2005-07-28 14:49:01 -070062
Greg Kroah-Hartman62e5a332007-07-18 10:58:02 -070063 switch (status) {
Matthew Dharm34008db2005-07-28 14:49:01 -070064 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
Dmitry Torokhov88789672005-09-15 02:01:43 -050075 input_report_key(dev, ONETOUCH_BUTTON, data[0] & 0x02);
Matthew Dharm34008db2005-07-28 14:49:01 -070076 input_sync(dev);
Dmitry Torokhov88789672005-09-15 02:01:43 -050077
Matthew Dharm34008db2005-07-28 14:49:01 -070078resubmit:
Greg Kroah-Hartman62e5a332007-07-18 10:58:02 -070079 retval = usb_submit_urb (urb, GFP_ATOMIC);
80 if (retval)
81 err ("can't resubmit intr, %s-%s/input0, retval %d",
Matthew Dharm34008db2005-07-28 14:49:01 -070082 onetouch->udev->bus->bus_name,
Greg Kroah-Hartman62e5a332007-07-18 10:58:02 -070083 onetouch->udev->devpath, retval);
Matthew Dharm34008db2005-07-28 14:49:01 -070084}
85
86static int usb_onetouch_open(struct input_dev *dev)
87{
Dmitry Torokhov09b70022007-05-08 00:31:30 -040088 struct usb_onetouch *onetouch = input_get_drvdata(dev);
Matthew Dharm34008db2005-07-28 14:49:01 -070089
Matthew Dharm7931e1c2005-12-04 21:56:51 -080090 onetouch->is_open = 1;
Matthew Dharm34008db2005-07-28 14:49:01 -070091 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
100static void usb_onetouch_close(struct input_dev *dev)
101{
Dmitry Torokhov09b70022007-05-08 00:31:30 -0400102 struct usb_onetouch *onetouch = input_get_drvdata(dev);
Matthew Dharm34008db2005-07-28 14:49:01 -0700103
104 usb_kill_urb(onetouch->irq);
Matthew Dharm7931e1c2005-12-04 21:56:51 -0800105 onetouch->is_open = 0;
Matthew Dharm34008db2005-07-28 14:49:01 -0700106}
107
Matthew Dharm7931e1c2005-12-04 21:56:51 -0800108#ifdef CONFIG_PM
109static 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
Matthew Dharm34008db2005-07-28 14:49:01 -0700129int 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;
Dmitry Torokhov88789672005-09-15 02:01:43 -0500135 struct input_dev *input_dev;
Matthew Dharm34008db2005-07-28 14:49:01 -0700136 int pipe, maxp;
Dmitry Torokhov17efe152006-08-01 22:45:28 -0400137 int error = -ENOMEM;
Matthew Dharm34008db2005-07-28 14:49:01 -0700138
139 interface = ss->pusb_intf->cur_altsetting;
140
Nick Sillikd6450e12005-08-17 13:37:34 -0400141 if (interface->desc.bNumEndpoints != 3)
Matthew Dharm34008db2005-07-28 14:49:01 -0700142 return -ENODEV;
Nick Sillikd6450e12005-08-17 13:37:34 -0400143
144 endpoint = &interface->endpoint[2].desc;
Luiz Fernando N. Capitulino66722a12006-10-26 13:02:55 -0300145 if (!usb_endpoint_is_int_in(endpoint))
Matthew Dharm34008db2005-07-28 14:49:01 -0700146 return -ENODEV;
147
148 pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
149 maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
150
Dmitry Torokhov88789672005-09-15 02:01:43 -0500151 onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
152 input_dev = input_allocate_device();
153 if (!onetouch || !input_dev)
154 goto fail1;
Matthew Dharm34008db2005-07-28 14:49:01 -0700155
Nick Sillikd6450e12005-08-17 13:37:34 -0400156 onetouch->data = usb_buffer_alloc(udev, ONETOUCH_PKT_LEN,
Christoph Lameter54e6ecb2006-12-06 20:33:16 -0800157 GFP_ATOMIC, &onetouch->data_dma);
Dmitry Torokhov88789672005-09-15 02:01:43 -0500158 if (!onetouch->data)
159 goto fail1;
Matthew Dharm34008db2005-07-28 14:49:01 -0700160
161 onetouch->irq = usb_alloc_urb(0, GFP_KERNEL);
Dmitry Torokhov88789672005-09-15 02:01:43 -0500162 if (!onetouch->irq)
163 goto fail2;
Matthew Dharm34008db2005-07-28 14:49:01 -0700164
165 onetouch->udev = udev;
Dmitry Torokhov88789672005-09-15 02:01:43 -0500166 onetouch->dev = input_dev;
Matthew Dharm34008db2005-07-28 14:49:01 -0700167
168 if (udev->manufacturer)
Dmitry Torokhov88789672005-09-15 02:01:43 -0500169 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 }
176
Matthew Dharm34008db2005-07-28 14:49:01 -0700177 if (!strlen(onetouch->name))
Dmitry Torokhov88789672005-09-15 02:01:43 -0500178 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));
182
183 usb_make_path(udev, onetouch->phys, sizeof(onetouch->phys));
184 strlcat(onetouch->phys, "/input0", sizeof(onetouch->phys));
185
186 input_dev->name = onetouch->name;
187 input_dev->phys = onetouch->phys;
188 usb_to_input_id(udev, &input_dev->id);
Dmitry Torokhov09b70022007-05-08 00:31:30 -0400189 input_dev->dev.parent = &udev->dev;
Dmitry Torokhov88789672005-09-15 02:01:43 -0500190
191 set_bit(EV_KEY, input_dev->evbit);
192 set_bit(ONETOUCH_BUTTON, input_dev->keybit);
193 clear_bit(0, input_dev->keybit);
194
Dmitry Torokhov09b70022007-05-08 00:31:30 -0400195 input_set_drvdata(input_dev, onetouch);
196
Dmitry Torokhov88789672005-09-15 02:01:43 -0500197 input_dev->open = usb_onetouch_open;
198 input_dev->close = usb_onetouch_close;
Matthew Dharm34008db2005-07-28 14:49:01 -0700199
200 usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data,
201 (maxp > 8 ? 8 : maxp),
202 usb_onetouch_irq, onetouch, endpoint->bInterval);
203 onetouch->irq->transfer_dma = onetouch->data_dma;
204 onetouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
205
206 ss->extra_destructor = onetouch_release_input;
207 ss->extra = onetouch;
Matthew Dharm7931e1c2005-12-04 21:56:51 -0800208#ifdef CONFIG_PM
209 ss->suspend_resume_hook = usb_onetouch_pm_hook;
210#endif
Matthew Dharm34008db2005-07-28 14:49:01 -0700211
Dmitry Torokhov17efe152006-08-01 22:45:28 -0400212 error = input_register_device(onetouch->dev);
213 if (error)
214 goto fail3;
Matthew Dharm34008db2005-07-28 14:49:01 -0700215
216 return 0;
Dmitry Torokhov88789672005-09-15 02:01:43 -0500217
Dmitry Torokhov17efe152006-08-01 22:45:28 -0400218 fail3: usb_free_urb(onetouch->irq);
Dmitry Torokhov88789672005-09-15 02:01:43 -0500219 fail2: usb_buffer_free(udev, ONETOUCH_PKT_LEN,
220 onetouch->data, onetouch->data_dma);
221 fail1: kfree(onetouch);
222 input_free_device(input_dev);
Dmitry Torokhov17efe152006-08-01 22:45:28 -0400223 return error;
Matthew Dharm34008db2005-07-28 14:49:01 -0700224}
225
Adrian Bunk43c1e982008-04-28 18:39:37 +0300226static void onetouch_release_input(void *onetouch_)
Matthew Dharm34008db2005-07-28 14:49:01 -0700227{
228 struct usb_onetouch *onetouch = (struct usb_onetouch *) onetouch_;
229
230 if (onetouch) {
231 usb_kill_urb(onetouch->irq);
Dmitry Torokhov88789672005-09-15 02:01:43 -0500232 input_unregister_device(onetouch->dev);
Matthew Dharm34008db2005-07-28 14:49:01 -0700233 usb_free_urb(onetouch->irq);
234 usb_buffer_free(onetouch->udev, ONETOUCH_PKT_LEN,
235 onetouch->data, onetouch->data_dma);
Matthew Dharm34008db2005-07-28 14:49:01 -0700236 }
237}