X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fusb%2Fcore%2Fsysfs.c;fp=drivers%2Fusb%2Fcore%2Fsysfs.c;h=71d881327e88e0aa05611a7acd3967ec1b24b4c4;hb=64ba3f394c830ec48a1c31b53dcae312c56f1604;hp=dec973affb0f5b2639d9bbaeb237726c0bbd9d56;hpb=be1e6109ac94a859551f8e1774eb9a8469fe055c;p=linux-2.6.git diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index dec973aff..71d881327 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -10,10 +10,208 @@ */ +#include #include #include #include "usb.h" +/* endpoint stuff */ +struct ep_object { + struct usb_endpoint_descriptor *desc; + struct usb_device *udev; + struct kobject kobj; +}; +#define to_ep_object(_kobj) \ + container_of(_kobj, struct ep_object, kobj) + +struct ep_attribute { + struct attribute attr; + ssize_t (*show)(struct usb_device *, + struct usb_endpoint_descriptor *, char *); +}; +#define to_ep_attribute(_attr) \ + container_of(_attr, struct ep_attribute, attr) + +#define EP_ATTR(_name) \ +struct ep_attribute ep_##_name = { \ + .attr = {.name = #_name, .owner = THIS_MODULE, \ + .mode = S_IRUGO}, \ + .show = show_ep_##_name} + +#define usb_ep_attr(field, format_string) \ +static ssize_t show_ep_##field(struct usb_device *udev, \ + struct usb_endpoint_descriptor *desc, \ + char *buf) \ +{ \ + return sprintf(buf, format_string, desc->field); \ +} \ +static EP_ATTR(field); + +usb_ep_attr(bLength, "%02x\n") +usb_ep_attr(bEndpointAddress, "%02x\n") +usb_ep_attr(bmAttributes, "%02x\n") +usb_ep_attr(bInterval, "%02x\n") + +static ssize_t show_ep_wMaxPacketSize(struct usb_device *udev, + struct usb_endpoint_descriptor *desc, char *buf) +{ + return sprintf(buf, "%04x\n", + le16_to_cpu(desc->wMaxPacketSize) & 0x07ff); +} +static EP_ATTR(wMaxPacketSize); + +static ssize_t show_ep_type(struct usb_device *udev, + struct usb_endpoint_descriptor *desc, char *buf) +{ + char *type = "unknown"; + + switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + case USB_ENDPOINT_XFER_CONTROL: + type = "Control"; + break; + case USB_ENDPOINT_XFER_ISOC: + type = "Isoc"; + break; + case USB_ENDPOINT_XFER_BULK: + type = "Bulk"; + break; + case USB_ENDPOINT_XFER_INT: + type = "Interrupt"; + break; + } + return sprintf(buf, "%s\n", type); +} +static EP_ATTR(type); + +static ssize_t show_ep_interval(struct usb_device *udev, + struct usb_endpoint_descriptor *desc, char *buf) +{ + char unit; + unsigned interval = 0; + unsigned in; + + in = (desc->bEndpointAddress & USB_DIR_IN); + + switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + case USB_ENDPOINT_XFER_CONTROL: + if (udev->speed == USB_SPEED_HIGH) /* uframes per NAK */ + interval = desc->bInterval; + break; + case USB_ENDPOINT_XFER_ISOC: + interval = 1 << (desc->bInterval - 1); + break; + case USB_ENDPOINT_XFER_BULK: + if (udev->speed == USB_SPEED_HIGH && !in) /* uframes per NAK */ + interval = desc->bInterval; + break; + case USB_ENDPOINT_XFER_INT: + if (udev->speed == USB_SPEED_HIGH) + interval = 1 << (desc->bInterval - 1); + else + interval = desc->bInterval; + break; + } + interval *= (udev->speed == USB_SPEED_HIGH) ? 125 : 1000; + if (interval % 1000) + unit = 'u'; + else { + unit = 'm'; + interval /= 1000; + } + + return sprintf(buf, "%d%cs\n", interval, unit); +} +static EP_ATTR(interval); + +static ssize_t show_ep_direction(struct usb_device *udev, + struct usb_endpoint_descriptor *desc, char *buf) +{ + char *direction; + + if ((desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == + USB_ENDPOINT_XFER_CONTROL) + direction = "both"; + else if (desc->bEndpointAddress & USB_DIR_IN) + direction = "in"; + else + direction = "out"; + return sprintf(buf, "%s\n", direction); +} +static EP_ATTR(direction); + +static struct attribute *ep_attrs[] = { + &ep_bLength.attr, + &ep_bEndpointAddress.attr, + &ep_bmAttributes.attr, + &ep_bInterval.attr, + &ep_wMaxPacketSize.attr, + &ep_type.attr, + &ep_interval.attr, + &ep_direction.attr, + NULL, +}; + +static void ep_object_release(struct kobject *kobj) +{ + kfree(to_ep_object(kobj)); +} + +static ssize_t ep_object_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct ep_object *ep_obj = to_ep_object(kobj); + struct ep_attribute *ep_attr = to_ep_attribute(attr); + + return (ep_attr->show)(ep_obj->udev, ep_obj->desc, buf); +} + +static struct sysfs_ops ep_object_sysfs_ops = { + .show = ep_object_show, +}; + +static struct kobj_type ep_object_ktype = { + .release = ep_object_release, + .sysfs_ops = &ep_object_sysfs_ops, + .default_attrs = ep_attrs, +}; + +static void usb_create_ep_files(struct kobject *parent, + struct usb_host_endpoint *endpoint, + struct usb_device *udev) +{ + struct ep_object *ep_obj; + struct kobject *kobj; + + ep_obj = kzalloc(sizeof(struct ep_object), GFP_KERNEL); + if (!ep_obj) + return; + + ep_obj->desc = &endpoint->desc; + ep_obj->udev = udev; + + kobj = &ep_obj->kobj; + kobject_set_name(kobj, "ep_%02x", endpoint->desc.bEndpointAddress); + kobj->parent = parent; + kobj->ktype = &ep_object_ktype; + + /* Don't use kobject_register, because it generates a hotplug event */ + kobject_init(kobj); + if (kobject_add(kobj) == 0) + endpoint->kobj = kobj; + else + kobject_put(kobj); +} + +static void usb_remove_ep_files(struct usb_host_endpoint *endpoint) +{ + + if (endpoint->kobj) { + kobject_del(endpoint->kobj); + kobject_put(endpoint->kobj); + endpoint->kobj = NULL; + } +} + /* Active configuration fields */ #define usb_actconfig_show(field, multiplier, format_string) \ static ssize_t show_##field (struct device *dev, \ @@ -222,7 +420,7 @@ void usb_create_sysfs_dev_files (struct usb_device *udev) 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); + usb_create_ep_files(&dev->kobj, &udev->ep0, udev); } void usb_remove_sysfs_dev_files (struct usb_device *udev) @@ -326,7 +524,7 @@ static inline void usb_create_intf_ep_files(struct usb_interface *intf, iface_desc = intf->cur_altsetting; for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) - usb_create_ep_files(&intf->dev, &iface_desc->endpoint[i], + usb_create_ep_files(&intf->dev.kobj, &iface_desc->endpoint[i], udev); }