[GitHub/MotorolaMobilityLLC/kernel-slsi.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 = urb->status;
	int retval;

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

static int usb_onetouch_open(struct input_dev *dev)
{
	struct usb_onetouch *onetouch = input_get_drvdata(dev);

	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 = input_get_drvdata(dev);

	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->dev.parent = &udev->dev;

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

	input_set_drvdata(input_dev, 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;
62e5a330 GKH	60	int status = urb->status;
62e5a330 GKH	61	int retval;
34008dbf	62
62e5a330	63	switch (status) {
34008dbf MD	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:
62e5a330 GKH	79	retval = usb_submit_urb (urb, GFP_ATOMIC);
	80	if (retval)
	81	err ("can't resubmit intr, %s-%s/input0, retval %d",
34008dbf	82	onetouch->udev->bus->bus_name,
62e5a330	83	onetouch->udev->devpath, retval);
34008dbf MD	84	}
	85
	86	static int usb_onetouch_open(struct input_dev *dev)
	87	{
09b7002d	88	struct usb_onetouch *onetouch = input_get_drvdata(dev);
34008dbf	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	{
09b7002d	102	struct usb_onetouch *onetouch = input_get_drvdata(dev);
34008dbf MD	103
34008dbf MD	104	usb_kill_urb(onetouch->irq);
7931e1c6	105	onetouch->is_open = 0;
34008dbf MD	106	}
34008dbf MD	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)
88789672 DT	159	goto fail1;
34008dbf MD	160
34008dbf MD	161	onetouch->irq = usb_alloc_urb(0, GFP_KERNEL);
88789672 DT	162	if (!onetouch->irq)
88789672 DT	163	goto fail2;
34008dbf MD	164
34008dbf MD	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));
88789672 DT	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);
09b7002d	189	input_dev->dev.parent = &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
09b7002d DT	195	input_set_drvdata(input_dev, onetouch);
09b7002d DT	196
88789672 DT	197	input_dev->open = usb_onetouch_open;
88789672 DT	198	input_dev->close = usb_onetouch_close;
34008dbf MD	199
	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;
7931e1c6 MD	208	#ifdef CONFIG_PM
	209	ss->suspend_resume_hook = usb_onetouch_pm_hook;
	210	#endif
34008dbf	211
17efe155 DT	212	error = input_register_device(onetouch->dev);
	213	if (error)
	214	goto fail3;
34008dbf MD	215
34008dbf MD	216	return 0;
88789672	217
17efe155	218	fail3: usb_free_urb(onetouch->irq);
88789672 DT	219	fail2: usb_buffer_free(udev, ONETOUCH_PKT_LEN,
	220	onetouch->data, onetouch->data_dma);
	221	fail1: kfree(onetouch);
	222	input_free_device(input_dev);
17efe155	223	return error;
34008dbf MD	224	}
	225
	226	void onetouch_release_input(void *onetouch_)
	227	{
	228	struct usb_onetouch onetouch = (struct usb_onetouch ) onetouch_;
	229
	230	if (onetouch) {
	231	usb_kill_urb(onetouch->irq);
88789672	232	input_unregister_device(onetouch->dev);
34008dbf MD	233	usb_free_urb(onetouch->irq);
	234	usb_buffer_free(onetouch->udev, ONETOUCH_PKT_LEN,
	235	onetouch->data, onetouch->data_dma);
34008dbf MD	236	}
34008dbf MD	237	}