--- /dev/null
+/*
+ * drivers/usb/core/sysfs.c
+ *
+ * (C) Copyright 2002 David Brownell
+ * (C) Copyright 2002 Greg Kroah-Hartman
+ * (C) Copyright 2002 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, char *buf) \
+{ \
+ struct usb_device *udev; \
+ \
+ udev = to_usb_device (dev); \
+ if (udev->actconfig) \
+ return sprintf (buf, format_string, \
+ udev->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")
+
+/* configuration value is always present, and r/w */
+usb_actconfig_show(bConfigurationValue, 1, "%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 (sscanf (buf, "%u", &config) != 1 || config > 255)
+ return -EINVAL;
+ down(&udev->serialize);
+ value = usb_set_configuration (udev, config);
+ up(&udev->serialize);
+ return (value < 0) ? value : count;
+}
+
+static DEVICE_ATTR(bConfigurationValue, S_IRUGO | S_IWUSR,
+ show_bConfigurationValue, set_bConfigurationValue);
+
+/* String fields */
+#define usb_string_attr(name, field) \
+static ssize_t show_##name(struct device *dev, char *buf) \
+{ \
+ struct usb_device *udev; \
+ int len; \
+ \
+ udev = to_usb_device (dev); \
+ len = usb_string(udev, udev->descriptor.field, buf, PAGE_SIZE); \
+ 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, iProduct);
+usb_string_attr(manufacturer, iManufacturer);
+usb_string_attr(serial, iSerialNumber);
+
+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 sprintf (buf, "%s\n", speed);
+}
+static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);
+
+static ssize_t
+show_devnum (struct device *dev, 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, char *buf)
+{
+ struct usb_device *udev;
+
+ udev = to_usb_device (dev);
+ return sprintf (buf, "%2x.%02x\n", udev->descriptor.bcdUSB >> 8,
+ udev->descriptor.bcdUSB & 0xff);
+}
+static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
+
+static ssize_t
+show_maxchild (struct device *dev, 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(field, format_string) \
+static ssize_t \
+show_##field (struct device *dev, 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 (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_sysfs_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);
+
+ device_create_file (dev, &dev_attr_devnum);
+ device_create_file (dev, &dev_attr_version);
+ device_create_file (dev, &dev_attr_maxchild);
+}
+
+/* Interface fields */
+#define usb_intf_attr(field, format_string) \
+static ssize_t \
+show_##field (struct device *dev, 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")
+usb_intf_attr (iInterface, "%02x\n")
+
+void usb_create_sysfs_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);
+}
git://git.onelab.eu / linux-2.6.git / blobdiff