[linux-2.6-block.git] / drivers / usb / core / sysfs.c

/*
 * drivers/usb/core/sysfs.c
 *
 * (C) Copyright 2002 David Brownell
 * (C) Copyright 2002,2004 Greg Kroah-Hartman
 * (C) Copyright 2002,2004 IBM Corp.
 *
 * All of the sysfs file attributes for usb devices and interfaces.
 *
 */


#include <linux/config.h>
#include <linux/kernel.h>

#ifdef CONFIG_USB_DEBUG
	#define DEBUG
#else
	#undef DEBUG
#endif
#include <linux/usb.h>

#include "usb.h"

/* Active configuration fields */
#define usb_actconfig_show(field, multiplier, format_string)		\
static ssize_t  show_##field (struct device *dev, struct device_attribute *attr, char *buf)		\
{									\
	struct usb_device *udev;					\
	struct usb_host_config *actconfig;				\
									\
	udev = to_usb_device (dev);					\
	actconfig = udev->actconfig;					\
	if (actconfig)							\
		return sprintf (buf, format_string,			\
				actconfig->desc.field * multiplier);	\
	else								\
		return 0;						\
}									\

#define usb_actconfig_attr(field, multiplier, format_string)		\
usb_actconfig_show(field, multiplier, format_string)			\
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);

usb_actconfig_attr (bNumInterfaces, 1, "%2d\n")
usb_actconfig_attr (bmAttributes, 1, "%2x\n")
usb_actconfig_attr (bMaxPower, 2, "%3dmA\n")

static ssize_t show_configuration_string(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct usb_device *udev;
	struct usb_host_config *actconfig;
	int len;

	udev = to_usb_device (dev);
	actconfig = udev->actconfig;
	if ((!actconfig) || (!actconfig->string))
		return 0;
	len = sprintf(buf, actconfig->string, PAGE_SIZE);
	if (len < 0)
		return 0;
	buf[len] = '\n';
	buf[len+1] = 0;
	return len+1;
}
static DEVICE_ATTR(configuration, S_IRUGO, show_configuration_string, NULL);

/* configuration value is always present, and r/w */
usb_actconfig_show(bConfigurationValue, 1, "%u\n");

static ssize_t
set_bConfigurationValue (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
	struct usb_device	*udev = udev = to_usb_device (dev);
	int			config, value;

	if (sscanf (buf, "%u", &config) != 1 || config > 255)
		return -EINVAL;
	usb_lock_device(udev);
	value = usb_set_configuration (udev, config);
	usb_unlock_device(udev);
	return (value < 0) ? value : count;
}

static DEVICE_ATTR(bConfigurationValue, S_IRUGO | S_IWUSR, 
		show_bConfigurationValue, set_bConfigurationValue);

/* String fields */
#define usb_string_attr(name)						\
static ssize_t  show_##name(struct device *dev, struct device_attribute *attr, char *buf)		\
{									\
	struct usb_device *udev;					\
	int len;							\
									\
	udev = to_usb_device (dev);					\
	len = snprintf(buf, 256, "%s", udev->name);			\
	if (len < 0)							\
		return 0;						\
	buf[len] = '\n';						\
	buf[len+1] = 0;							\
	return len+1;							\
}									\
static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);

usb_string_attr(product);
usb_string_attr(manufacturer);
usb_string_attr(serial);

static ssize_t
show_speed (struct device *dev, struct device_attribute *attr, char *buf)
{
	struct usb_device *udev;
	char *speed;

	udev = to_usb_device (dev);

	switch (udev->speed) {
	case USB_SPEED_LOW:
		speed = "1.5";
		break;
	case USB_SPEED_UNKNOWN:
	case USB_SPEED_FULL:
		speed = "12";
		break;
	case USB_SPEED_HIGH:
		speed = "480";
		break;
	default:
		speed = "unknown";
	}
	return sprintf (buf, "%s\n", speed);
}
static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);

static ssize_t
show_devnum (struct device *dev, struct device_attribute *attr, char *buf)
{
	struct usb_device *udev;

	udev = to_usb_device (dev);
	return sprintf (buf, "%d\n", udev->devnum);
}
static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL);

static ssize_t
show_version (struct device *dev, struct device_attribute *attr, char *buf)
{
	struct usb_device *udev;
	u16 bcdUSB;

	udev = to_usb_device(dev);
	bcdUSB = le16_to_cpu(udev->descriptor.bcdUSB);
	return sprintf(buf, "%2x.%02x\n", bcdUSB >> 8, bcdUSB & 0xff);
}
static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);

static ssize_t
show_maxchild (struct device *dev, struct device_attribute *attr, char *buf)
{
	struct usb_device *udev;

	udev = to_usb_device (dev);
	return sprintf (buf, "%d\n", udev->maxchild);
}
static DEVICE_ATTR(maxchild, S_IRUGO, show_maxchild, NULL);

/* Descriptor fields */
#define usb_descriptor_attr_le16(field, format_string)			\
static ssize_t								\
show_##field (struct device *dev, struct device_attribute *attr, char *buf)				\
{									\
	struct usb_device *udev;					\
									\
	udev = to_usb_device (dev);					\
	return sprintf (buf, format_string, 				\
			le16_to_cpu(udev->descriptor.field));		\
}									\
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);

usb_descriptor_attr_le16(idVendor, "%04x\n")
usb_descriptor_attr_le16(idProduct, "%04x\n")
usb_descriptor_attr_le16(bcdDevice, "%04x\n")

#define usb_descriptor_attr(field, format_string)			\
static ssize_t								\
show_##field (struct device *dev, struct device_attribute *attr, char *buf)				\
{									\
	struct usb_device *udev;					\
									\
	udev = to_usb_device (dev);					\
	return sprintf (buf, format_string, udev->descriptor.field);	\
}									\
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);

usb_descriptor_attr (bDeviceClass, "%02x\n")
usb_descriptor_attr (bDeviceSubClass, "%02x\n")
usb_descriptor_attr (bDeviceProtocol, "%02x\n")
usb_descriptor_attr (bNumConfigurations, "%d\n")
usb_descriptor_attr (bMaxPacketSize0, "%d\n")

static struct attribute *dev_attrs[] = {
	/* current configuration's attributes */
	&dev_attr_bNumInterfaces.attr,
	&dev_attr_bConfigurationValue.attr,
	&dev_attr_bmAttributes.attr,
	&dev_attr_bMaxPower.attr,
	/* device attributes */
	&dev_attr_idVendor.attr,
	&dev_attr_idProduct.attr,
	&dev_attr_bcdDevice.attr,
	&dev_attr_bDeviceClass.attr,
	&dev_attr_bDeviceSubClass.attr,
	&dev_attr_bDeviceProtocol.attr,
	&dev_attr_bNumConfigurations.attr,
	&dev_attr_bMaxPacketSize0.attr,
	&dev_attr_speed.attr,
	&dev_attr_devnum.attr,
	&dev_attr_version.attr,
	&dev_attr_maxchild.attr,
	NULL,
};
static struct attribute_group dev_attr_grp = {
	.attrs = dev_attrs,
};

void usb_create_sysfs_dev_files (struct usb_device *udev)
{
	struct device *dev = &udev->dev;

	sysfs_create_group(&dev->kobj, &dev_attr_grp);

	if (udev->manufacturer)
		device_create_file (dev, &dev_attr_manufacturer);
	if (udev->product)
		device_create_file (dev, &dev_attr_product);
	if (udev->serial)
		device_create_file (dev, &dev_attr_serial);
	device_create_file (dev, &dev_attr_configuration);
}

void usb_remove_sysfs_dev_files (struct usb_device *udev)
{
	struct device *dev = &udev->dev;

	sysfs_remove_group(&dev->kobj, &dev_attr_grp);

	if (udev->descriptor.iManufacturer)
		device_remove_file(dev, &dev_attr_manufacturer);
	if (udev->descriptor.iProduct)
		device_remove_file(dev, &dev_attr_product);
	if (udev->descriptor.iSerialNumber)
		device_remove_file(dev, &dev_attr_serial);
	device_remove_file (dev, &dev_attr_configuration);
}

/* Interface fields */
#define usb_intf_attr(field, format_string)				\
static ssize_t								\
show_##field (struct device *dev, struct device_attribute *attr, char *buf)				\
{									\
	struct usb_interface *intf = to_usb_interface (dev);		\
									\
	return sprintf (buf, format_string, intf->cur_altsetting->desc.field); \
}									\
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);

usb_intf_attr (bInterfaceNumber, "%02x\n")
usb_intf_attr (bAlternateSetting, "%2d\n")
usb_intf_attr (bNumEndpoints, "%02x\n")
usb_intf_attr (bInterfaceClass, "%02x\n")
usb_intf_attr (bInterfaceSubClass, "%02x\n")
usb_intf_attr (bInterfaceProtocol, "%02x\n")

static ssize_t show_interface_string(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct usb_interface *intf;
	struct usb_device *udev;
	int len;

	intf = to_usb_interface (dev);
	udev = interface_to_usbdev (intf);
	len = snprintf(buf, 256, "%s", intf->cur_altsetting->string);
	if (len < 0)
		return 0;
	buf[len] = '\n';
	buf[len+1] = 0;
	return len+1;
}
static DEVICE_ATTR(interface, S_IRUGO, show_interface_string, NULL);

static ssize_t show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct usb_interface *intf;
	struct usb_device *udev;
	int len;

	intf = to_usb_interface(dev);
	udev = interface_to_usbdev(intf);

	len = sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic",
			       le16_to_cpu(udev->descriptor.idVendor),
			       le16_to_cpu(udev->descriptor.idProduct),
			       le16_to_cpu(udev->descriptor.bcdDevice),
			       udev->descriptor.bDeviceClass,
			       udev->descriptor.bDeviceSubClass,
			       udev->descriptor.bDeviceProtocol);
	buf += len;

	if (udev->descriptor.bDeviceClass == 0) {
		struct usb_host_interface *alt = intf->cur_altsetting;

		return len + sprintf(buf, "%02Xisc%02Xip%02X\n",
			       alt->desc.bInterfaceClass,
			       alt->desc.bInterfaceSubClass,
			       alt->desc.bInterfaceProtocol);
 	} else {
		return len + sprintf(buf, "*isc*ip*\n");
	}
}
static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL);

static struct attribute *intf_attrs[] = {
	&dev_attr_bInterfaceNumber.attr,
	&dev_attr_bAlternateSetting.attr,
	&dev_attr_bNumEndpoints.attr,
	&dev_attr_bInterfaceClass.attr,
	&dev_attr_bInterfaceSubClass.attr,
	&dev_attr_bInterfaceProtocol.attr,
	&dev_attr_modalias.attr,
	NULL,
};
static struct attribute_group intf_attr_grp = {
	.attrs = intf_attrs,
};

void usb_create_sysfs_intf_files (struct usb_interface *intf)
{
	sysfs_create_group(&intf->dev.kobj, &intf_attr_grp);

	if (intf->cur_altsetting->string)
		device_create_file(&intf->dev, &dev_attr_interface);
		
}

void usb_remove_sysfs_intf_files (struct usb_interface *intf)
{
	sysfs_remove_group(&intf->dev.kobj, &intf_attr_grp);

	if (intf->cur_altsetting->string)
		device_remove_file(&intf->dev, &dev_attr_interface);

}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* drivers/usb/core/sysfs.c
	3	*
	4	* (C) Copyright 2002 David Brownell
	5	* (C) Copyright 2002,2004 Greg Kroah-Hartman
	6	* (C) Copyright 2002,2004 IBM Corp.
	7	*
	8	* All of the sysfs file attributes for usb devices and interfaces.
	9	*
	10	*/
	11
	12
	13	#include <linux/config.h>
	14	#include <linux/kernel.h>
	15
	16	#ifdef CONFIG_USB_DEBUG
	17	#define DEBUG
	18	#else
	19	#undef DEBUG
	20	#endif
	21	#include <linux/usb.h>
	22
	23	#include "usb.h"
	24
	25	/* Active configuration fields */
	26	#define usb_actconfig_show(field, multiplier, format_string) \
10523b3b	27	static ssize_t show_##field (struct device dev, struct device_attribute attr, char *buf) \
1da177e4 LT	28	{ \
	29	struct usb_device *udev; \
	30	struct usb_host_config *actconfig; \
	31	\
	32	udev = to_usb_device (dev); \
	33	actconfig = udev->actconfig; \
	34	if (actconfig) \
	35	return sprintf (buf, format_string, \
	36	actconfig->desc.field * multiplier); \
	37	else \
	38	return 0; \
	39	} \
	40
	41	#define usb_actconfig_attr(field, multiplier, format_string) \
	42	usb_actconfig_show(field, multiplier, format_string) \
	43	static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
	44
	45	usb_actconfig_attr (bNumInterfaces, 1, "%2d\n")
	46	usb_actconfig_attr (bmAttributes, 1, "%2x\n")
	47	usb_actconfig_attr (bMaxPower, 2, "%3dmA\n")
	48
10523b3b	49	static ssize_t show_configuration_string(struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	50	{
	51	struct usb_device *udev;
	52	struct usb_host_config *actconfig;
	53	int len;
	54
	55	udev = to_usb_device (dev);
	56	actconfig = udev->actconfig;
	57	if ((!actconfig) \|\| (!actconfig->string))
	58	return 0;
	59	len = sprintf(buf, actconfig->string, PAGE_SIZE);
	60	if (len < 0)
	61	return 0;
	62	buf[len] = '\n';
	63	buf[len+1] = 0;
	64	return len+1;
	65	}
	66	static DEVICE_ATTR(configuration, S_IRUGO, show_configuration_string, NULL);
	67
	68	/* configuration value is always present, and r/w */
	69	usb_actconfig_show(bConfigurationValue, 1, "%u\n");
	70
	71	static ssize_t
10523b3b	72	set_bConfigurationValue (struct device dev, struct device_attribute attr, const char *buf, size_t count)
1da177e4 LT	73	{
	74	struct usb_device *udev = udev = to_usb_device (dev);
	75	int config, value;
	76
	77	if (sscanf (buf, "%u", &config) != 1 \|\| config > 255)
	78	return -EINVAL;
	79	usb_lock_device(udev);
	80	value = usb_set_configuration (udev, config);
	81	usb_unlock_device(udev);
	82	return (value < 0) ? value : count;
	83	}
	84
	85	static DEVICE_ATTR(bConfigurationValue, S_IRUGO \| S_IWUSR,
	86	show_bConfigurationValue, set_bConfigurationValue);
	87
	88	/* String fields */
	89	#define usb_string_attr(name) \
10523b3b	90	static ssize_t show_##name(struct device dev, struct device_attribute attr, char *buf) \
1da177e4 LT	91	{ \
	92	struct usb_device *udev; \
	93	int len; \
	94	\
	95	udev = to_usb_device (dev); \
	96	len = snprintf(buf, 256, "%s", udev->name); \
	97	if (len < 0) \
	98	return 0; \
	99	buf[len] = '\n'; \
	100	buf[len+1] = 0; \
	101	return len+1; \
	102	} \
	103	static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
	104
	105	usb_string_attr(product);
	106	usb_string_attr(manufacturer);
	107	usb_string_attr(serial);
	108
	109	static ssize_t
10523b3b	110	show_speed (struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	111	{
	112	struct usb_device *udev;
	113	char *speed;
	114
	115	udev = to_usb_device (dev);
	116
	117	switch (udev->speed) {
	118	case USB_SPEED_LOW:
	119	speed = "1.5";
	120	break;
	121	case USB_SPEED_UNKNOWN:
	122	case USB_SPEED_FULL:
	123	speed = "12";
	124	break;
	125	case USB_SPEED_HIGH:
	126	speed = "480";
	127	break;
	128	default:
	129	speed = "unknown";
	130	}
	131	return sprintf (buf, "%s\n", speed);
	132	}
	133	static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);
	134
	135	static ssize_t
10523b3b	136	show_devnum (struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	137	{
	138	struct usb_device *udev;
	139
	140	udev = to_usb_device (dev);
	141	return sprintf (buf, "%d\n", udev->devnum);
	142	}
	143	static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL);
	144
	145	static ssize_t
10523b3b	146	show_version (struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	147	{
	148	struct usb_device *udev;
	149	u16 bcdUSB;
	150
	151	udev = to_usb_device(dev);
	152	bcdUSB = le16_to_cpu(udev->descriptor.bcdUSB);
	153	return sprintf(buf, "%2x.%02x\n", bcdUSB >> 8, bcdUSB & 0xff);
	154	}
	155	static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
	156
	157	static ssize_t
10523b3b	158	show_maxchild (struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	159	{
	160	struct usb_device *udev;
	161
	162	udev = to_usb_device (dev);
	163	return sprintf (buf, "%d\n", udev->maxchild);
	164	}
	165	static DEVICE_ATTR(maxchild, S_IRUGO, show_maxchild, NULL);
	166
	167	/* Descriptor fields */
	168	#define usb_descriptor_attr_le16(field, format_string) \
	169	static ssize_t \
10523b3b	170	show_##field (struct device dev, struct device_attribute attr, char *buf) \
1da177e4 LT	171	{ \
	172	struct usb_device *udev; \
	173	\
	174	udev = to_usb_device (dev); \
	175	return sprintf (buf, format_string, \
	176	le16_to_cpu(udev->descriptor.field)); \
	177	} \
	178	static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
	179
	180	usb_descriptor_attr_le16(idVendor, "%04x\n")
	181	usb_descriptor_attr_le16(idProduct, "%04x\n")
	182	usb_descriptor_attr_le16(bcdDevice, "%04x\n")
	183
	184	#define usb_descriptor_attr(field, format_string) \
	185	static ssize_t \
10523b3b	186	show_##field (struct device dev, struct device_attribute attr, char *buf) \
1da177e4 LT	187	{ \
	188	struct usb_device *udev; \
	189	\
	190	udev = to_usb_device (dev); \
	191	return sprintf (buf, format_string, udev->descriptor.field); \
	192	} \
	193	static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
	194
	195	usb_descriptor_attr (bDeviceClass, "%02x\n")
	196	usb_descriptor_attr (bDeviceSubClass, "%02x\n")
	197	usb_descriptor_attr (bDeviceProtocol, "%02x\n")
	198	usb_descriptor_attr (bNumConfigurations, "%d\n")
cf5910bb	199	usb_descriptor_attr (bMaxPacketSize0, "%d\n")
1da177e4 LT	200
	201	static struct attribute *dev_attrs[] = {
	202	/* current configuration's attributes */
	203	&dev_attr_bNumInterfaces.attr,
	204	&dev_attr_bConfigurationValue.attr,
	205	&dev_attr_bmAttributes.attr,
	206	&dev_attr_bMaxPower.attr,
	207	/* device attributes */
	208	&dev_attr_idVendor.attr,
	209	&dev_attr_idProduct.attr,
	210	&dev_attr_bcdDevice.attr,
	211	&dev_attr_bDeviceClass.attr,
	212	&dev_attr_bDeviceSubClass.attr,
	213	&dev_attr_bDeviceProtocol.attr,
	214	&dev_attr_bNumConfigurations.attr,
cf5910bb	215	&dev_attr_bMaxPacketSize0.attr,
1da177e4 LT	216	&dev_attr_speed.attr,
	217	&dev_attr_devnum.attr,
	218	&dev_attr_version.attr,
	219	&dev_attr_maxchild.attr,
	220	NULL,
	221	};
	222	static struct attribute_group dev_attr_grp = {
	223	.attrs = dev_attrs,
	224	};
	225
	226	void usb_create_sysfs_dev_files (struct usb_device *udev)
	227	{
	228	struct device *dev = &udev->dev;
	229
	230	sysfs_create_group(&dev->kobj, &dev_attr_grp);
	231
	232	if (udev->manufacturer)
	233	device_create_file (dev, &dev_attr_manufacturer);
	234	if (udev->product)
	235	device_create_file (dev, &dev_attr_product);
	236	if (udev->serial)
	237	device_create_file (dev, &dev_attr_serial);
	238	device_create_file (dev, &dev_attr_configuration);
	239	}
	240
	241	void usb_remove_sysfs_dev_files (struct usb_device *udev)
	242	{
	243	struct device *dev = &udev->dev;
	244
	245	sysfs_remove_group(&dev->kobj, &dev_attr_grp);
	246
	247	if (udev->descriptor.iManufacturer)
	248	device_remove_file(dev, &dev_attr_manufacturer);
	249	if (udev->descriptor.iProduct)
	250	device_remove_file(dev, &dev_attr_product);
	251	if (udev->descriptor.iSerialNumber)
	252	device_remove_file(dev, &dev_attr_serial);
	253	device_remove_file (dev, &dev_attr_configuration);
	254	}
	255
	256	/* Interface fields */
	257	#define usb_intf_attr(field, format_string) \
	258	static ssize_t \
10523b3b	259	show_##field (struct device dev, struct device_attribute attr, char *buf) \
1da177e4 LT	260	{ \
	261	struct usb_interface *intf = to_usb_interface (dev); \
	262	\
	263	return sprintf (buf, format_string, intf->cur_altsetting->desc.field); \
	264	} \
	265	static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
	266
	267	usb_intf_attr (bInterfaceNumber, "%02x\n")
	268	usb_intf_attr (bAlternateSetting, "%2d\n")
	269	usb_intf_attr (bNumEndpoints, "%02x\n")
	270	usb_intf_attr (bInterfaceClass, "%02x\n")
	271	usb_intf_attr (bInterfaceSubClass, "%02x\n")
	272	usb_intf_attr (bInterfaceProtocol, "%02x\n")
	273
10523b3b	274	static ssize_t show_interface_string(struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	275	{
	276	struct usb_interface *intf;
	277	struct usb_device *udev;
	278	int len;
	279
	280	intf = to_usb_interface (dev);
	281	udev = interface_to_usbdev (intf);
	282	len = snprintf(buf, 256, "%s", intf->cur_altsetting->string);
	283	if (len < 0)
	284	return 0;
	285	buf[len] = '\n';
	286	buf[len+1] = 0;
	287	return len+1;
	288	}
	289	static DEVICE_ATTR(interface, S_IRUGO, show_interface_string, NULL);
	290
4893e9d1	291	static ssize_t show_modalias(struct device dev, struct device_attribute attr, char *buf)
360b52b0 GK	292	{
	293	struct usb_interface *intf;
	294	struct usb_device *udev;
77ddecc3	295	int len;
360b52b0 GK	296
	297	intf = to_usb_interface(dev);
	298	udev = interface_to_usbdev(intf);
360b52b0	299
77ddecc3	300	len = sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic",
360b52b0 GK	301	le16_to_cpu(udev->descriptor.idVendor),
	302	le16_to_cpu(udev->descriptor.idProduct),
	303	le16_to_cpu(udev->descriptor.bcdDevice),
	304	udev->descriptor.bDeviceClass,
	305	udev->descriptor.bDeviceSubClass,
77ddecc3 PM	306	udev->descriptor.bDeviceProtocol);
	307	buf += len;
	308
	309	if (udev->descriptor.bDeviceClass == 0) {
	310	struct usb_host_interface *alt = intf->cur_altsetting;
	311
	312	return len + sprintf(buf, "%02Xisc%02Xip%02X\n",
360b52b0 GK	313	alt->desc.bInterfaceClass,
	314	alt->desc.bInterfaceSubClass,
	315	alt->desc.bInterfaceProtocol);
	316	} else {
77ddecc3	317	return len + sprintf(buf, "iscip*\n");
360b52b0	318	}
360b52b0 GK	319	}
	320	static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL);
	321
1da177e4 LT	322	static struct attribute *intf_attrs[] = {
	323	&dev_attr_bInterfaceNumber.attr,
	324	&dev_attr_bAlternateSetting.attr,
	325	&dev_attr_bNumEndpoints.attr,
	326	&dev_attr_bInterfaceClass.attr,
	327	&dev_attr_bInterfaceSubClass.attr,
	328	&dev_attr_bInterfaceProtocol.attr,
360b52b0	329	&dev_attr_modalias.attr,
1da177e4 LT	330	NULL,
	331	};
	332	static struct attribute_group intf_attr_grp = {
	333	.attrs = intf_attrs,
	334	};
	335
	336	void usb_create_sysfs_intf_files (struct usb_interface *intf)
	337	{
	338	sysfs_create_group(&intf->dev.kobj, &intf_attr_grp);
	339
	340	if (intf->cur_altsetting->string)
	341	device_create_file(&intf->dev, &dev_attr_interface);
	342
	343	}
	344
	345	void usb_remove_sysfs_intf_files (struct usb_interface *intf)
	346	{
	347	sysfs_remove_group(&intf->dev.kobj, &intf_attr_grp);
	348
	349	if (intf->cur_altsetting->string)
	350	device_remove_file(&intf->dev, &dev_attr_interface);
	351
	352	}