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/*
* drivers/usb/core/driverfs.c
*
* (C) Copyright 2002 David Brownell
* (C) Copyright 2002 Greg Kroah-Hartman
* (C) Copyright 2002 IBM Corp.
*
* All of the driverfs file attributes for usb devices and interfaces.
*
*/
#include <linuxcomp.h>
#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, format_string) \
static ssize_t \
show_##field (struct device *dev, char *buf) \
{ \
struct usb_device *udev; \
\
udev = to_usb_device (dev); \
if (udev->actconfig) \
return sprintf26 (buf, format_string, udev->actconfig->desc.field); \
else return 0; \
} \
#define usb_actconfig_attr(field, format_string) \
usb_actconfig_show(field,format_string) \
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
usb_actconfig_attr (bNumInterfaces, "%2d\n")
usb_actconfig_attr (bmAttributes, "%2x\n")
usb_actconfig_attr (bMaxPower, "%3dmA\n")
/* configuration value is always present, and r/w */
usb_actconfig_show(bConfigurationValue,"%u\n");
static ssize_t
set_bConfigurationValue (struct device *dev, const char *buf, size_t count)
{
struct usb_device *udev = udev = to_usb_device (dev);
int config, value;
if (sscanf26(buf, "%u", &config) != 1 || config > 255)
return -EINVAL;
value = usb_set_configuration (udev, config);
return (value < 0) ? value : count;
}
static DEVICE_ATTR(bConfigurationValue, S_IRUGO | S_IWUSR,
show_bConfigurationValue, set_bConfigurationValue);
/* String fields */
static ssize_t show_product (struct device *dev, char *buf)
{
struct usb_device *udev;
int len;
udev = to_usb_device (dev);
len = usb_string(udev, udev->descriptor.iProduct, buf, PAGE_SIZE);
if (len < 0)
return 0;
buf[len] = '\n';
buf[len+1] = 0;
return len+1;
}
static DEVICE_ATTR(product,S_IRUGO,show_product,NULL);
static ssize_t
show_manufacturer (struct device *dev, char *buf)
{
struct usb_device *udev;
int len;
udev = to_usb_device (dev);
len = usb_string(udev, udev->descriptor.iManufacturer, buf, PAGE_SIZE);
if (len < 0)
return 0;
buf[len] = '\n';
buf[len+1] = 0;
return len+1;
}
static DEVICE_ATTR(manufacturer,S_IRUGO,show_manufacturer,NULL);
static ssize_t
show_serial (struct device *dev, char *buf)
{
struct usb_device *udev;
int len;
udev = to_usb_device (dev);
len = usb_string(udev, udev->descriptor.iSerialNumber, buf, PAGE_SIZE);
if (len < 0)
return 0;
buf[len] = '\n';
buf[len+1] = 0;
return len+1;
}
static DEVICE_ATTR(serial,S_IRUGO,show_serial,NULL);
static ssize_t
show_speed (struct device *dev, 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 sprintf26 (buf, "%s\n", speed);
}
static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);
/* Descriptor fields */
#define usb_descriptor_attr(field, format_string) \
static ssize_t \
show_##field (struct device *dev, char *buf) \
{ \
struct usb_device *udev; \
\
udev = to_usb_device (dev); \
return sprintf26 (buf, format_string, udev->descriptor.field); \
} \
static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL);
usb_descriptor_attr (idVendor, "%04x\n")
usb_descriptor_attr (idProduct, "%04x\n")
usb_descriptor_attr (bcdDevice, "%04x\n")
usb_descriptor_attr (bDeviceClass, "%02x\n")
usb_descriptor_attr (bDeviceSubClass, "%02x\n")
usb_descriptor_attr (bDeviceProtocol, "%02x\n")
usb_descriptor_attr (bNumConfigurations, "%d\n")
void usb_create_driverfs_dev_files (struct usb_device *udev)
{
struct device *dev = &udev->dev;
/* current configuration's attributes */
device_create_file (dev, &dev_attr_bNumInterfaces);
device_create_file (dev, &dev_attr_bConfigurationValue);
device_create_file (dev, &dev_attr_bmAttributes);
device_create_file (dev, &dev_attr_bMaxPower);
/* device attributes */
device_create_file (dev, &dev_attr_idVendor);
device_create_file (dev, &dev_attr_idProduct);
device_create_file (dev, &dev_attr_bcdDevice);
device_create_file (dev, &dev_attr_bDeviceClass);
device_create_file (dev, &dev_attr_bDeviceSubClass);
device_create_file (dev, &dev_attr_bDeviceProtocol);
device_create_file (dev, &dev_attr_bNumConfigurations);
/* speed varies depending on how you connect the device */
device_create_file (dev, &dev_attr_speed);
// FIXME iff there are other speed configs, show how many
if (udev->descriptor.iManufacturer)
device_create_file (dev, &dev_attr_manufacturer);
if (udev->descriptor.iProduct)
device_create_file (dev, &dev_attr_product);
if (udev->descriptor.iSerialNumber)
device_create_file (dev, &dev_attr_serial);
}
/* Interface fields */
#define usb_intf_attr(field, format_string) \
static ssize_t \
show_##field (struct device *dev, char *buf) \
{ \
struct usb_interface *intf; \
int alt; \
\
intf = to_usb_interface (dev); \
alt = intf->act_altsetting; \
\
return sprintf26 (buf, format_string, intf->altsetting[alt].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")
usb_intf_attr (iInterface, "%02x\n")
void usb_create_driverfs_intf_files (struct usb_interface *intf)
{
device_create_file (&intf->dev, &dev_attr_bInterfaceNumber);
device_create_file (&intf->dev, &dev_attr_bAlternateSetting);
device_create_file (&intf->dev, &dev_attr_bNumEndpoints);
device_create_file (&intf->dev, &dev_attr_bInterfaceClass);
device_create_file (&intf->dev, &dev_attr_bInterfaceSubClass);
device_create_file (&intf->dev, &dev_attr_bInterfaceProtocol);
device_create_file (&intf->dev, &dev_attr_iInterface);
}