[deliverable/linux.git] / drivers / usb / storage / onetouch.c

/*
 * Support for the Maxtor OneTouch USB hard drive's button
 *
 * Current development and maintenance by:
 *	Copyright (c) 2005 Nick Sillik <n.sillik@temple.edu>
 *
 * Initial work by:
 *	Copyright (c) 2003 Erik Thyren <erth7411@student.uu.se>
 *
 * Based on usbmouse.c (Vojtech Pavlik) and xpad.c (Marko Friedemann)
 *
 */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#include <linux/kernel.h>
#include <linux/input.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/usb/input.h>
#include "usb.h"
#include "onetouch.h"
#include "debug.h"

void onetouch_release_input(void *onetouch_);

struct usb_onetouch {
	char name[128];
	char phys[64];
	struct input_dev *dev;	/* input device interface */
	struct usb_device *udev;	/* usb device */

	struct urb *irq;	/* urb for interrupt in report */
	unsigned char *data;	/* input data */
	dma_addr_t data_dma;
	unsigned int is_open:1;
};

static void usb_onetouch_irq(struct urb *urb)
{
	struct usb_onetouch *onetouch = urb->context;
	signed char *data = onetouch->data;
	struct input_dev *dev = onetouch->dev;
	int status;

	switch (urb->status) {
	case 0:			/* success */
		break;
	case -ECONNRESET:	/* unlink */
	case -ENOENT:
	case -ESHUTDOWN:
		return;
	/* -EPIPE:  should clear the halt */
	default:		/* error */
		goto resubmit;
	}

	input_report_key(dev, ONETOUCH_BUTTON, data[0] & 0x02);
	input_sync(dev);

resubmit:
	status = usb_submit_urb (urb, GFP_ATOMIC);
	if (status)
		err ("can't resubmit intr, %s-%s/input0, status %d",
			onetouch->udev->bus->bus_name,
			onetouch->udev->devpath, status);
}

static int usb_onetouch_open(struct input_dev *dev)
{
	struct usb_onetouch *onetouch = dev->private;

	onetouch->is_open = 1;
	onetouch->irq->dev = onetouch->udev;
	if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) {
		err("usb_submit_urb failed");
		return -EIO;
	}

	return 0;
}

static void usb_onetouch_close(struct input_dev *dev)
{
	struct usb_onetouch *onetouch = dev->private;

	usb_kill_urb(onetouch->irq);
	onetouch->is_open = 0;
}

#ifdef CONFIG_PM
static void usb_onetouch_pm_hook(struct us_data *us, int action)
{
	struct usb_onetouch *onetouch = (struct usb_onetouch *) us->extra;

	if (onetouch->is_open) {
		switch (action) {
		case US_SUSPEND:
			usb_kill_urb(onetouch->irq);
			break;
		case US_RESUME:
			if (usb_submit_urb(onetouch->irq, GFP_KERNEL) != 0)
				err("usb_submit_urb failed");
			break;
		default:
			break;
		}
	}
}
#endif /* CONFIG_PM */

int onetouch_connect_input(struct us_data *ss)
{
	struct usb_device *udev = ss->pusb_dev;
	struct usb_host_interface *interface;
	struct usb_endpoint_descriptor *endpoint;
	struct usb_onetouch *onetouch;
	struct input_dev *input_dev;
	int pipe, maxp;
	int error = -ENOMEM;

	interface = ss->pusb_intf->cur_altsetting;

	if (interface->desc.bNumEndpoints != 3)
		return -ENODEV;

	endpoint = &interface->endpoint[2].desc;
	if (!usb_endpoint_is_int_in(endpoint))
		return -ENODEV;

	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));

	onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!onetouch || !input_dev)
		goto fail1;

	onetouch->data = usb_buffer_alloc(udev, ONETOUCH_PKT_LEN,
					  GFP_ATOMIC, &onetouch->data_dma);
	if (!onetouch->data)
		goto fail1;

	onetouch->irq = usb_alloc_urb(0, GFP_KERNEL);
	if (!onetouch->irq)
		goto fail2;

	onetouch->udev = udev;
	onetouch->dev = input_dev;

	if (udev->manufacturer)
		strlcpy(onetouch->name, udev->manufacturer,
			sizeof(onetouch->name));
	if (udev->product) {
		if (udev->manufacturer)
			strlcat(onetouch->name, " ", sizeof(onetouch->name));
		strlcat(onetouch->name, udev->product, sizeof(onetouch->name));
	}

	if (!strlen(onetouch->name))
		snprintf(onetouch->name, sizeof(onetouch->name),
			 "Maxtor Onetouch %04x:%04x",
			 le16_to_cpu(udev->descriptor.idVendor),
			 le16_to_cpu(udev->descriptor.idProduct));

	usb_make_path(udev, onetouch->phys, sizeof(onetouch->phys));
	strlcat(onetouch->phys, "/input0", sizeof(onetouch->phys));

	input_dev->name = onetouch->name;
	input_dev->phys = onetouch->phys;
	usb_to_input_id(udev, &input_dev->id);
	input_dev->cdev.dev = &udev->dev;

	set_bit(EV_KEY, input_dev->evbit);
	set_bit(ONETOUCH_BUTTON, input_dev->keybit);
	clear_bit(0, input_dev->keybit);

	input_dev->private = onetouch;
	input_dev->open = usb_onetouch_open;
	input_dev->close = usb_onetouch_close;

	usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data,
			 (maxp > 8 ? 8 : maxp),
			 usb_onetouch_irq, onetouch, endpoint->bInterval);
	onetouch->irq->transfer_dma = onetouch->data_dma;
	onetouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	ss->extra_destructor = onetouch_release_input;
	ss->extra = onetouch;
#ifdef CONFIG_PM
	ss->suspend_resume_hook = usb_onetouch_pm_hook;
#endif

	error = input_register_device(onetouch->dev);
	if (error)
		goto fail3;

	return 0;

 fail3:	usb_free_urb(onetouch->irq);
 fail2:	usb_buffer_free(udev, ONETOUCH_PKT_LEN,
			onetouch->data, onetouch->data_dma);
 fail1:	kfree(onetouch);
	input_free_device(input_dev);
	return error;
}

void onetouch_release_input(void *onetouch_)
{
	struct usb_onetouch *onetouch = (struct usb_onetouch *) onetouch_;

	if (onetouch) {
		usb_kill_urb(onetouch->irq);
		input_unregister_device(onetouch->dev);
		usb_free_urb(onetouch->irq);
		usb_buffer_free(onetouch->udev, ONETOUCH_PKT_LEN,
				onetouch->data, onetouch->data_dma);
	}
}
Commit	Line	Data
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>
ae0dadcf	36	#include <linux/usb/input.h>
34008dbf MD	37	#include "usb.h"
	38	#include "onetouch.h"
	39	#include "debug.h"
	40
	41	void onetouch_release_input(void *onetouch_);
	42
	43	struct usb_onetouch {
	44	char name[128];
	45	char phys[64];
88789672	46	struct input_dev dev; / input device interface */
34008dbf MD	47	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;
7931e1c6	52	unsigned int is_open:1;
34008dbf MD	53	};
34008dbf MD	54
7d12e780	55	static void usb_onetouch_irq(struct urb *urb)
34008dbf MD	56	{
	57	struct usb_onetouch *onetouch = urb->context;
	58	signed char *data = onetouch->data;
88789672	59	struct input_dev *dev = onetouch->dev;
34008dbf MD	60	int status;
	61
	62	switch (urb->status) {
	63	case 0: /* success */
	64	break;
	65	case -ECONNRESET: /* unlink */
	66	case -ENOENT:
	67	case -ESHUTDOWN:
	68	return;
	69	/* -EPIPE: should clear the halt */
	70	default: /* error */
	71	goto resubmit;
	72	}
	73
88789672	74	input_report_key(dev, ONETOUCH_BUTTON, data[0] & 0x02);
34008dbf	75	input_sync(dev);
88789672	76
34008dbf	77	resubmit:
54e6ecb2	78	status = usb_submit_urb (urb, GFP_ATOMIC);
34008dbf MD	79	if (status)
	80	err ("can't resubmit intr, %s-%s/input0, status %d",
	81	onetouch->udev->bus->bus_name,
	82	onetouch->udev->devpath, status);
	83	}
	84
	85	static int usb_onetouch_open(struct input_dev *dev)
	86	{
	87	struct usb_onetouch *onetouch = dev->private;
	88
7931e1c6	89	onetouch->is_open = 1;
34008dbf MD	90	onetouch->irq->dev = onetouch->udev;
	91	if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) {
	92	err("usb_submit_urb failed");
	93	return -EIO;
	94	}
	95
	96	return 0;
	97	}
	98
	99	static void usb_onetouch_close(struct input_dev *dev)
	100	{
	101	struct usb_onetouch *onetouch = dev->private;
	102
	103	usb_kill_urb(onetouch->irq);
7931e1c6	104	onetouch->is_open = 0;
34008dbf MD	105	}
34008dbf MD	106
7931e1c6 MD	107	#ifdef CONFIG_PM
	108	static void usb_onetouch_pm_hook(struct us_data *us, int action)
	109	{
	110	struct usb_onetouch onetouch = (struct usb_onetouch ) us->extra;
	111
	112	if (onetouch->is_open) {
	113	switch (action) {
	114	case US_SUSPEND:
	115	usb_kill_urb(onetouch->irq);
	116	break;
	117	case US_RESUME:
	118	if (usb_submit_urb(onetouch->irq, GFP_KERNEL) != 0)
	119	err("usb_submit_urb failed");
	120	break;
	121	default:
	122	break;
	123	}
	124	}
	125	}
	126	#endif /* CONFIG_PM */
	127
34008dbf MD	128	int onetouch_connect_input(struct us_data *ss)
	129	{
	130	struct usb_device *udev = ss->pusb_dev;
	131	struct usb_host_interface *interface;
	132	struct usb_endpoint_descriptor *endpoint;
	133	struct usb_onetouch *onetouch;
88789672	134	struct input_dev *input_dev;
34008dbf	135	int pipe, maxp;
17efe155	136	int error = -ENOMEM;
34008dbf MD	137
	138	interface = ss->pusb_intf->cur_altsetting;
	139
d6450e19 NS	140	if (interface->desc.bNumEndpoints != 3)
	141	return -ENODEV;
	142
34008dbf	143	endpoint = &interface->endpoint[2].desc;
66722a19	144	if (!usb_endpoint_is_int_in(endpoint))
34008dbf MD	145	return -ENODEV;
	146
	147	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
	148	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
	149
88789672 DT	150	onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
	151	input_dev = input_allocate_device();
	152	if (!onetouch \|\| !input_dev)
	153	goto fail1;
34008dbf	154
d6450e19	155	onetouch->data = usb_buffer_alloc(udev, ONETOUCH_PKT_LEN,
54e6ecb2	156	GFP_ATOMIC, &onetouch->data_dma);
88789672 DT	157	if (!onetouch->data)
88789672 DT	158	goto fail1;
34008dbf MD	159
34008dbf MD	160	onetouch->irq = usb_alloc_urb(0, GFP_KERNEL);
88789672 DT	161	if (!onetouch->irq)
88789672 DT	162	goto fail2;
34008dbf MD	163
34008dbf MD	164	onetouch->udev = udev;
88789672	165	onetouch->dev = input_dev;
34008dbf	166
88789672 DT	167	if (udev->manufacturer)
	168	strlcpy(onetouch->name, udev->manufacturer,
	169	sizeof(onetouch->name));
	170	if (udev->product) {
	171	if (udev->manufacturer)
	172	strlcat(onetouch->name, " ", sizeof(onetouch->name));
	173	strlcat(onetouch->name, udev->product, sizeof(onetouch->name));
	174	}
34008dbf	175
88789672 DT	176	if (!strlen(onetouch->name))
	177	snprintf(onetouch->name, sizeof(onetouch->name),
	178	"Maxtor Onetouch %04x:%04x",
	179	le16_to_cpu(udev->descriptor.idVendor),
	180	le16_to_cpu(udev->descriptor.idProduct));
34008dbf	181
88789672 DT	182	usb_make_path(udev, onetouch->phys, sizeof(onetouch->phys));
88789672 DT	183	strlcat(onetouch->phys, "/input0", sizeof(onetouch->phys));
34008dbf	184
88789672 DT	185	input_dev->name = onetouch->name;
	186	input_dev->phys = onetouch->phys;
	187	usb_to_input_id(udev, &input_dev->id);
	188	input_dev->cdev.dev = &udev->dev;
34008dbf	189
88789672 DT	190	set_bit(EV_KEY, input_dev->evbit);
	191	set_bit(ONETOUCH_BUTTON, input_dev->keybit);
	192	clear_bit(0, input_dev->keybit);
34008dbf	193
88789672 DT	194	input_dev->private = onetouch;
	195	input_dev->open = usb_onetouch_open;
	196	input_dev->close = usb_onetouch_close;
34008dbf MD	197
	198	usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data,
	199	(maxp > 8 ? 8 : maxp),
	200	usb_onetouch_irq, onetouch, endpoint->bInterval);
	201	onetouch->irq->transfer_dma = onetouch->data_dma;
	202	onetouch->irq->transfer_flags \|= URB_NO_TRANSFER_DMA_MAP;
	203
	204	ss->extra_destructor = onetouch_release_input;
	205	ss->extra = onetouch;
7931e1c6 MD	206	#ifdef CONFIG_PM
	207	ss->suspend_resume_hook = usb_onetouch_pm_hook;
	208	#endif
34008dbf	209
17efe155 DT	210	error = input_register_device(onetouch->dev);
	211	if (error)
	212	goto fail3;
34008dbf MD	213
34008dbf MD	214	return 0;
88789672	215
17efe155	216	fail3: usb_free_urb(onetouch->irq);
88789672 DT	217	fail2: usb_buffer_free(udev, ONETOUCH_PKT_LEN,
	218	onetouch->data, onetouch->data_dma);
	219	fail1: kfree(onetouch);
	220	input_free_device(input_dev);
17efe155	221	return error;
34008dbf MD	222	}
	223
	224	void onetouch_release_input(void *onetouch_)
	225	{
	226	struct usb_onetouch onetouch = (struct usb_onetouch ) onetouch_;
	227
	228	if (onetouch) {
	229	usb_kill_urb(onetouch->irq);
88789672	230	input_unregister_device(onetouch->dev);
34008dbf MD	231	usb_free_urb(onetouch->irq);
	232	usb_buffer_free(onetouch->udev, ONETOUCH_PKT_LEN,
	233	onetouch->data, onetouch->data_dma);
34008dbf MD	234	}
34008dbf MD	235	}