[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/kernel.h>
#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;

	udev = to_usb_device (dev);
	actconfig = udev->actconfig;
	if ((!actconfig) || (!actconfig->string))
		return 0;
	return sprintf(buf, "%s\n", actconfig->string);
}
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;					\
									\
	udev = to_usb_device (dev);					\
	return sprintf(buf, "%s\n", udev->name);			\
}									\
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);
	usb_create_ep_files(dev, &udev->ep0, udev);
}

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

	usb_remove_ep_files(&udev->ep0);
	sysfs_remove_group(&dev->kobj, &dev_attr_grp);

	if (udev->manufacturer)
		device_remove_file(dev, &dev_attr_manufacturer);
	if (udev->product)
		device_remove_file(dev, &dev_attr_product);
	if (udev->serial)
		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;
	struct usb_host_interface *alt;

	intf = to_usb_interface(dev);
	udev = interface_to_usbdev(intf);
	alt = intf->cur_altsetting;

	return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02X"
			"ic%02Xisc%02Xip%02X\n",
			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,
			alt->desc.bInterfaceClass,
			alt->desc.bInterfaceSubClass,
			alt->desc.bInterfaceProtocol);
}
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,
};

static inline void usb_create_intf_ep_files(struct usb_interface *intf,
		struct usb_device *udev)
{
	struct usb_host_interface *iface_desc;
	int i;

	iface_desc = intf->cur_altsetting;
	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i)
		usb_create_ep_files(&intf->dev, &iface_desc->endpoint[i],
				udev);
}

static inline void usb_remove_intf_ep_files(struct usb_interface *intf)
{
	struct usb_host_interface *iface_desc;
	int i;

	iface_desc = intf->cur_altsetting;
	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i)
		usb_remove_ep_files(&iface_desc->endpoint[i]);
}

void usb_create_sysfs_intf_files (struct usb_interface *intf)
{
	struct usb_device *udev = interface_to_usbdev(intf);
	struct usb_host_interface *alt = intf->cur_altsetting;

	sysfs_create_group(&intf->dev.kobj, &intf_attr_grp);

	if (alt->string == NULL)
		alt->string = usb_cache_string(udev, alt->desc.iInterface);
	if (alt->string)
		device_create_file(&intf->dev, &dev_attr_interface);
	usb_create_intf_ep_files(intf, udev);
}

void usb_remove_sysfs_intf_files (struct usb_interface *intf)
{
	usb_remove_intf_ep_files(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
1da177e4	13	#include <linux/kernel.h>
1da177e4	14	#include <linux/usb.h>
1da177e4 LT	15	#include "usb.h"
	16
	17	/* Active configuration fields */
	18	#define usb_actconfig_show(field, multiplier, format_string) \
b724ae77 AS	19	static ssize_t show_##field (struct device *dev, \
b724ae77 AS	20	struct device_attribute attr, char buf) \
1da177e4 LT	21	{ \
	22	struct usb_device *udev; \
	23	struct usb_host_config *actconfig; \
	24	\
	25	udev = to_usb_device (dev); \
	26	actconfig = udev->actconfig; \
	27	if (actconfig) \
	28	return sprintf (buf, format_string, \
	29	actconfig->desc.field * multiplier); \
	30	else \
	31	return 0; \
	32	} \
	33
	34	#define usb_actconfig_attr(field, multiplier, format_string) \
	35	usb_actconfig_show(field, multiplier, format_string) \
	36	static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
	37
	38	usb_actconfig_attr (bNumInterfaces, 1, "%2d\n")
	39	usb_actconfig_attr (bmAttributes, 1, "%2x\n")
	40	usb_actconfig_attr (bMaxPower, 2, "%3dmA\n")
	41
b724ae77 AS	42	static ssize_t show_configuration_string(struct device *dev,
b724ae77 AS	43	struct device_attribute attr, char buf)
1da177e4 LT	44	{
	45	struct usb_device *udev;
	46	struct usb_host_config *actconfig;
1da177e4 LT	47
	48	udev = to_usb_device (dev);
	49	actconfig = udev->actconfig;
	50	if ((!actconfig) \|\| (!actconfig->string))
	51	return 0;
4f62efe6	52	return sprintf(buf, "%s\n", actconfig->string);
1da177e4 LT	53	}
	54	static DEVICE_ATTR(configuration, S_IRUGO, show_configuration_string, NULL);
	55
	56	/* configuration value is always present, and r/w */
	57	usb_actconfig_show(bConfigurationValue, 1, "%u\n");
	58
	59	static ssize_t
b724ae77 AS	60	set_bConfigurationValue (struct device dev, struct device_attribute attr,
b724ae77 AS	61	const char *buf, size_t count)
1da177e4 LT	62	{
	63	struct usb_device *udev = udev = to_usb_device (dev);
	64	int config, value;
	65
	66	if (sscanf (buf, "%u", &config) != 1 \|\| config > 255)
	67	return -EINVAL;
	68	usb_lock_device(udev);
	69	value = usb_set_configuration (udev, config);
	70	usb_unlock_device(udev);
	71	return (value < 0) ? value : count;
	72	}
	73
	74	static DEVICE_ATTR(bConfigurationValue, S_IRUGO \| S_IWUSR,
	75	show_bConfigurationValue, set_bConfigurationValue);
	76
	77	/* String fields */
	78	#define usb_string_attr(name) \
b724ae77 AS	79	static ssize_t show_##name(struct device *dev, \
b724ae77 AS	80	struct device_attribute attr, char buf) \
1da177e4 LT	81	{ \
1da177e4 LT	82	struct usb_device *udev; \
1da177e4 LT	83	\
1da177e4 LT	84	udev = to_usb_device (dev); \
4f62efe6	85	return sprintf(buf, "%s\n", udev->name); \
1da177e4 LT	86	} \
	87	static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
	88
	89	usb_string_attr(product);
	90	usb_string_attr(manufacturer);
	91	usb_string_attr(serial);
	92
	93	static ssize_t
10523b3b	94	show_speed (struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	95	{
	96	struct usb_device *udev;
	97	char *speed;
	98
	99	udev = to_usb_device (dev);
	100
	101	switch (udev->speed) {
	102	case USB_SPEED_LOW:
	103	speed = "1.5";
	104	break;
	105	case USB_SPEED_UNKNOWN:
	106	case USB_SPEED_FULL:
	107	speed = "12";
	108	break;
	109	case USB_SPEED_HIGH:
	110	speed = "480";
	111	break;
	112	default:
	113	speed = "unknown";
	114	}
	115	return sprintf (buf, "%s\n", speed);
	116	}
	117	static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);
	118
	119	static ssize_t
10523b3b	120	show_devnum (struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	121	{
	122	struct usb_device *udev;
	123
	124	udev = to_usb_device (dev);
	125	return sprintf (buf, "%d\n", udev->devnum);
	126	}
	127	static DEVICE_ATTR(devnum, S_IRUGO, show_devnum, NULL);
	128
	129	static ssize_t
10523b3b	130	show_version (struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	131	{
	132	struct usb_device *udev;
	133	u16 bcdUSB;
	134
	135	udev = to_usb_device(dev);
	136	bcdUSB = le16_to_cpu(udev->descriptor.bcdUSB);
	137	return sprintf(buf, "%2x.%02x\n", bcdUSB >> 8, bcdUSB & 0xff);
	138	}
	139	static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
	140
	141	static ssize_t
10523b3b	142	show_maxchild (struct device dev, struct device_attribute attr, char *buf)
1da177e4 LT	143	{
	144	struct usb_device *udev;
	145
	146	udev = to_usb_device (dev);
	147	return sprintf (buf, "%d\n", udev->maxchild);
	148	}
	149	static DEVICE_ATTR(maxchild, S_IRUGO, show_maxchild, NULL);
	150
	151	/* Descriptor fields */
	152	#define usb_descriptor_attr_le16(field, format_string) \
	153	static ssize_t \
b724ae77 AS	154	show_##field (struct device dev, struct device_attribute attr, \
b724ae77 AS	155	char *buf) \
1da177e4 LT	156	{ \
	157	struct usb_device *udev; \
	158	\
	159	udev = to_usb_device (dev); \
	160	return sprintf (buf, format_string, \
	161	le16_to_cpu(udev->descriptor.field)); \
	162	} \
	163	static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
	164
	165	usb_descriptor_attr_le16(idVendor, "%04x\n")
	166	usb_descriptor_attr_le16(idProduct, "%04x\n")
	167	usb_descriptor_attr_le16(bcdDevice, "%04x\n")
	168
	169	#define usb_descriptor_attr(field, format_string) \
	170	static ssize_t \
b724ae77 AS	171	show_##field (struct device dev, struct device_attribute attr, \
b724ae77 AS	172	char *buf) \
1da177e4 LT	173	{ \
	174	struct usb_device *udev; \
	175	\
	176	udev = to_usb_device (dev); \
	177	return sprintf (buf, format_string, udev->descriptor.field); \
	178	} \
	179	static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
	180
	181	usb_descriptor_attr (bDeviceClass, "%02x\n")
	182	usb_descriptor_attr (bDeviceSubClass, "%02x\n")
	183	usb_descriptor_attr (bDeviceProtocol, "%02x\n")
	184	usb_descriptor_attr (bNumConfigurations, "%d\n")
cf5910bb	185	usb_descriptor_attr (bMaxPacketSize0, "%d\n")
1da177e4 LT	186
	187	static struct attribute *dev_attrs[] = {
	188	/* current configuration's attributes */
	189	&dev_attr_bNumInterfaces.attr,
	190	&dev_attr_bConfigurationValue.attr,
	191	&dev_attr_bmAttributes.attr,
	192	&dev_attr_bMaxPower.attr,
	193	/* device attributes */
	194	&dev_attr_idVendor.attr,
	195	&dev_attr_idProduct.attr,
	196	&dev_attr_bcdDevice.attr,
	197	&dev_attr_bDeviceClass.attr,
	198	&dev_attr_bDeviceSubClass.attr,
	199	&dev_attr_bDeviceProtocol.attr,
	200	&dev_attr_bNumConfigurations.attr,
cf5910bb	201	&dev_attr_bMaxPacketSize0.attr,
1da177e4 LT	202	&dev_attr_speed.attr,
	203	&dev_attr_devnum.attr,
	204	&dev_attr_version.attr,
	205	&dev_attr_maxchild.attr,
	206	NULL,
	207	};
	208	static struct attribute_group dev_attr_grp = {
	209	.attrs = dev_attrs,
	210	};
	211
	212	void usb_create_sysfs_dev_files (struct usb_device *udev)
	213	{
	214	struct device *dev = &udev->dev;
	215
	216	sysfs_create_group(&dev->kobj, &dev_attr_grp);
	217
	218	if (udev->manufacturer)
	219	device_create_file (dev, &dev_attr_manufacturer);
	220	if (udev->product)
	221	device_create_file (dev, &dev_attr_product);
	222	if (udev->serial)
	223	device_create_file (dev, &dev_attr_serial);
	224	device_create_file (dev, &dev_attr_configuration);
36679ea5	225	usb_create_ep_files(dev, &udev->ep0, udev);
1da177e4 LT	226	}
	227
	228	void usb_remove_sysfs_dev_files (struct usb_device *udev)
	229	{
	230	struct device *dev = &udev->dev;
	231
be69e5b1	232	usb_remove_ep_files(&udev->ep0);
1da177e4 LT	233	sysfs_remove_group(&dev->kobj, &dev_attr_grp);
1da177e4 LT	234
4f62efe6	235	if (udev->manufacturer)
1da177e4	236	device_remove_file(dev, &dev_attr_manufacturer);
4f62efe6	237	if (udev->product)
1da177e4	238	device_remove_file(dev, &dev_attr_product);
4f62efe6	239	if (udev->serial)
1da177e4 LT	240	device_remove_file(dev, &dev_attr_serial);
	241	device_remove_file (dev, &dev_attr_configuration);
	242	}
	243
	244	/* Interface fields */
	245	#define usb_intf_attr(field, format_string) \
	246	static ssize_t \
b724ae77 AS	247	show_##field (struct device dev, struct device_attribute attr, \
b724ae77 AS	248	char *buf) \
1da177e4 LT	249	{ \
	250	struct usb_interface *intf = to_usb_interface (dev); \
	251	\
b724ae77 AS	252	return sprintf (buf, format_string, \
b724ae77 AS	253	intf->cur_altsetting->desc.field); \
1da177e4 LT	254	} \
	255	static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
	256
	257	usb_intf_attr (bInterfaceNumber, "%02x\n")
	258	usb_intf_attr (bAlternateSetting, "%2d\n")
	259	usb_intf_attr (bNumEndpoints, "%02x\n")
	260	usb_intf_attr (bInterfaceClass, "%02x\n")
	261	usb_intf_attr (bInterfaceSubClass, "%02x\n")
	262	usb_intf_attr (bInterfaceProtocol, "%02x\n")
	263
b724ae77 AS	264	static ssize_t show_interface_string(struct device *dev,
b724ae77 AS	265	struct device_attribute attr, char buf)
1da177e4 LT	266	{
	267	struct usb_interface *intf;
	268	struct usb_device *udev;
	269	int len;
	270
	271	intf = to_usb_interface (dev);
	272	udev = interface_to_usbdev (intf);
	273	len = snprintf(buf, 256, "%s", intf->cur_altsetting->string);
	274	if (len < 0)
	275	return 0;
	276	buf[len] = '\n';
	277	buf[len+1] = 0;
	278	return len+1;
	279	}
	280	static DEVICE_ATTR(interface, S_IRUGO, show_interface_string, NULL);
	281
b724ae77 AS	282	static ssize_t show_modalias(struct device *dev,
b724ae77 AS	283	struct device_attribute attr, char buf)
360b52b0 GK	284	{
	285	struct usb_interface *intf;
	286	struct usb_device *udev;
7521803d	287	struct usb_host_interface *alt;
360b52b0 GK	288
	289	intf = to_usb_interface(dev);
	290	udev = interface_to_usbdev(intf);
7521803d GKH	291	alt = intf->cur_altsetting;
	292
	293	return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02X"
	294	"ic%02Xisc%02Xip%02X\n",
	295	le16_to_cpu(udev->descriptor.idVendor),
	296	le16_to_cpu(udev->descriptor.idProduct),
	297	le16_to_cpu(udev->descriptor.bcdDevice),
	298	udev->descriptor.bDeviceClass,
	299	udev->descriptor.bDeviceSubClass,
	300	udev->descriptor.bDeviceProtocol,
	301	alt->desc.bInterfaceClass,
	302	alt->desc.bInterfaceSubClass,
	303	alt->desc.bInterfaceProtocol);
360b52b0 GK	304	}
	305	static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL);
	306
1da177e4 LT	307	static struct attribute *intf_attrs[] = {
	308	&dev_attr_bInterfaceNumber.attr,
	309	&dev_attr_bAlternateSetting.attr,
	310	&dev_attr_bNumEndpoints.attr,
	311	&dev_attr_bInterfaceClass.attr,
	312	&dev_attr_bInterfaceSubClass.attr,
	313	&dev_attr_bInterfaceProtocol.attr,
360b52b0	314	&dev_attr_modalias.attr,
1da177e4 LT	315	NULL,
	316	};
	317	static struct attribute_group intf_attr_grp = {
	318	.attrs = intf_attrs,
	319	};
	320
4f62efe6 AS	321	static inline void usb_create_intf_ep_files(struct usb_interface *intf,
4f62efe6 AS	322	struct usb_device *udev)
094f1649 GKH	323	{
	324	struct usb_host_interface *iface_desc;
	325	int i;
	326
	327	iface_desc = intf->cur_altsetting;
	328	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i)
36679ea5	329	usb_create_ep_files(&intf->dev, &iface_desc->endpoint[i],
4f62efe6	330	udev);
094f1649 GKH	331	}
094f1649 GKH	332
be69e5b1	333	static inline void usb_remove_intf_ep_files(struct usb_interface *intf)
094f1649 GKH	334	{
	335	struct usb_host_interface *iface_desc;
	336	int i;
	337
	338	iface_desc = intf->cur_altsetting;
	339	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i)
be69e5b1	340	usb_remove_ep_files(&iface_desc->endpoint[i]);
094f1649 GKH	341	}
094f1649 GKH	342
1da177e4 LT	343	void usb_create_sysfs_intf_files (struct usb_interface *intf)
1da177e4 LT	344	{
4f62efe6 AS	345	struct usb_device *udev = interface_to_usbdev(intf);
	346	struct usb_host_interface *alt = intf->cur_altsetting;
	347
1da177e4 LT	348	sysfs_create_group(&intf->dev.kobj, &intf_attr_grp);
1da177e4 LT	349
4f62efe6 AS	350	if (alt->string == NULL)
	351	alt->string = usb_cache_string(udev, alt->desc.iInterface);
	352	if (alt->string)
1da177e4	353	device_create_file(&intf->dev, &dev_attr_interface);
4f62efe6	354	usb_create_intf_ep_files(intf, udev);
1da177e4 LT	355	}
	356
	357	void usb_remove_sysfs_intf_files (struct usb_interface *intf)
	358	{
094f1649	359	usb_remove_intf_ep_files(intf);
1da177e4 LT	360	sysfs_remove_group(&intf->dev.kobj, &intf_attr_grp);
	361
	362	if (intf->cur_altsetting->string)
	363	device_remove_file(&intf->dev, &dev_attr_interface);
1da177e4	364	}