![Greg Kroah-Hartman](/assets/img/avatar_default.png)
One big merge this time with a total of 166 non-merge commits. Most of the work, by far, is on dwc2 this time (68.2%) with dwc3 a far second (22.5%). The remaining 9.3% are scattered on gadget drivers. The most important changes for dwc2 are the peripheral side DMA support implemented by Synopsys folks and support for the new IOT dwc2 compatible core from Synopsys. In dwc3 land we have support for high-bandwidth, high-speed isochronous endpoints and some non-critical fixes for large scatter lists. Apart from these, we have our usual set of cleanups, non-critical fixes, etc. -----BEGIN PGP SIGNATURE----- iQJRBAABCAA7FiEElLzh7wn96CXwjh2IzL64meEamQYFAlgu7+gdHGZlbGlwZS5i YWxiaUBsaW51eC5pbnRlbC5jb20ACgkQzL64meEamQaDbxAAsgDPAp8QTx8D1d70 hSGyPZ55rmqlzBNbUUOQyk/AeN5xM3XVbjZNOxWn4c386iaDrngcqOrxjCbBRsje b9yMESMiZsTPVlKXE45yXt//NHg1KUfpHON7rybaiFq0uqjUhnQf95DeYPgJVxit 7F9B+05XcNMyxYRoz6bGkRTU+lcJ6g3/orgKfp4t/hs8WUNXH6+71keMF+IdLYNH mcPmJ8MXpfLzv8eweRwV0s/3flxCuFx1ksZ8cW6qHR5vX303X2sGTlinBmhfQapr t0a+OBtLpZdNmjw/yB2odc/1jjLNRHpYU5xGqwouMx9Ca2PocFT2xFbmUWR23xp1 X0rkICRxcLPjZql2Uld5QHO9dPnF/FbX0Njuvxo+2r8ENE5/eG4C/RcYcRDmYPsu u8k2rKFs0+yCOAU91rD8mayJVBWBJ4trqZFT0TcocCGsMTk8fTYpF1Iskj9Z4FKz yo+lgyCCtp673ykGZ1ezsL6YWOmdrQv/PurKZqrXAmdhi6+mImLI/nAHtAdOZx0X zK9MwPnwDxrPiqhrZ46+Bm/EjZI50TM44M1ldmCwKi/6/Nvy54DHMtjPI5/9205R bjftW3DkVWAC//29RNcGEHtwiJFPEU/kdoRFOPhKGJ7ocCzFVSTFBgo02kDsC6De Wouv2QTFuZN9s17o29YVD3bGJZM= =5WN9 -----END PGP SIGNATURE----- Merge tag 'usb-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next Felipe writes: usb: patches for v4.10 merge window One big merge this time with a total of 166 non-merge commits. Most of the work, by far, is on dwc2 this time (68.2%) with dwc3 a far second (22.5%). The remaining 9.3% are scattered on gadget drivers. The most important changes for dwc2 are the peripheral side DMA support implemented by Synopsys folks and support for the new IOT dwc2 compatible core from Synopsys. In dwc3 land we have support for high-bandwidth, high-speed isochronous endpoints and some non-critical fixes for large scatter lists. Apart from these, we have our usual set of cleanups, non-critical fixes, etc.
219 lines
4.9 KiB
C
219 lines
4.9 KiB
C
/*
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* drivers/usb/core/endpoint.c
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*
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* (C) Copyright 2002,2004,2006 Greg Kroah-Hartman
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* (C) Copyright 2002,2004 IBM Corp.
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* (C) Copyright 2006 Novell Inc.
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*
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* Released under the GPLv2 only.
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* SPDX-License-Identifier: GPL-2.0
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*
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* Endpoint sysfs stuff
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*/
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#include <linux/kernel.h>
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include "usb.h"
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struct ep_device {
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struct usb_endpoint_descriptor *desc;
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struct usb_device *udev;
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struct device dev;
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};
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#define to_ep_device(_dev) \
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container_of(_dev, struct ep_device, dev)
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struct ep_attribute {
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struct attribute attr;
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ssize_t (*show)(struct usb_device *,
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struct usb_endpoint_descriptor *, char *);
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};
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#define to_ep_attribute(_attr) \
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container_of(_attr, struct ep_attribute, attr)
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#define usb_ep_attr(field, format_string) \
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static ssize_t field##_show(struct device *dev, \
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struct device_attribute *attr, \
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char *buf) \
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{ \
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struct ep_device *ep = to_ep_device(dev); \
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return sprintf(buf, format_string, ep->desc->field); \
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} \
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static DEVICE_ATTR_RO(field)
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usb_ep_attr(bLength, "%02x\n");
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usb_ep_attr(bEndpointAddress, "%02x\n");
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usb_ep_attr(bmAttributes, "%02x\n");
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usb_ep_attr(bInterval, "%02x\n");
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static ssize_t wMaxPacketSize_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct ep_device *ep = to_ep_device(dev);
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return sprintf(buf, "%04x\n", usb_endpoint_maxp(ep->desc));
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}
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static DEVICE_ATTR_RO(wMaxPacketSize);
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static ssize_t type_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct ep_device *ep = to_ep_device(dev);
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char *type = "unknown";
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switch (usb_endpoint_type(ep->desc)) {
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case USB_ENDPOINT_XFER_CONTROL:
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type = "Control";
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break;
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case USB_ENDPOINT_XFER_ISOC:
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type = "Isoc";
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break;
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case USB_ENDPOINT_XFER_BULK:
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type = "Bulk";
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break;
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case USB_ENDPOINT_XFER_INT:
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type = "Interrupt";
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break;
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}
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return sprintf(buf, "%s\n", type);
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}
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static DEVICE_ATTR_RO(type);
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static ssize_t interval_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct ep_device *ep = to_ep_device(dev);
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char unit;
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unsigned interval = 0;
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unsigned in;
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in = (ep->desc->bEndpointAddress & USB_DIR_IN);
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switch (usb_endpoint_type(ep->desc)) {
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case USB_ENDPOINT_XFER_CONTROL:
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if (ep->udev->speed == USB_SPEED_HIGH)
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/* uframes per NAK */
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interval = ep->desc->bInterval;
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break;
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case USB_ENDPOINT_XFER_ISOC:
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interval = 1 << (ep->desc->bInterval - 1);
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break;
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case USB_ENDPOINT_XFER_BULK:
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if (ep->udev->speed == USB_SPEED_HIGH && !in)
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/* uframes per NAK */
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interval = ep->desc->bInterval;
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break;
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case USB_ENDPOINT_XFER_INT:
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if (ep->udev->speed == USB_SPEED_HIGH)
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interval = 1 << (ep->desc->bInterval - 1);
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else
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interval = ep->desc->bInterval;
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break;
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}
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interval *= (ep->udev->speed == USB_SPEED_HIGH) ? 125 : 1000;
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if (interval % 1000)
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unit = 'u';
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else {
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unit = 'm';
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interval /= 1000;
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}
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return sprintf(buf, "%d%cs\n", interval, unit);
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}
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static DEVICE_ATTR_RO(interval);
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static ssize_t direction_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct ep_device *ep = to_ep_device(dev);
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char *direction;
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if (usb_endpoint_xfer_control(ep->desc))
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direction = "both";
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else if (usb_endpoint_dir_in(ep->desc))
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direction = "in";
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else
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direction = "out";
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return sprintf(buf, "%s\n", direction);
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}
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static DEVICE_ATTR_RO(direction);
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static struct attribute *ep_dev_attrs[] = {
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&dev_attr_bLength.attr,
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&dev_attr_bEndpointAddress.attr,
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&dev_attr_bmAttributes.attr,
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&dev_attr_bInterval.attr,
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&dev_attr_wMaxPacketSize.attr,
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&dev_attr_interval.attr,
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&dev_attr_type.attr,
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&dev_attr_direction.attr,
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NULL,
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};
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static struct attribute_group ep_dev_attr_grp = {
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.attrs = ep_dev_attrs,
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};
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static const struct attribute_group *ep_dev_groups[] = {
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&ep_dev_attr_grp,
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NULL
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};
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static void ep_device_release(struct device *dev)
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{
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struct ep_device *ep_dev = to_ep_device(dev);
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kfree(ep_dev);
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}
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struct device_type usb_ep_device_type = {
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.name = "usb_endpoint",
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.release = ep_device_release,
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};
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int usb_create_ep_devs(struct device *parent,
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struct usb_host_endpoint *endpoint,
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struct usb_device *udev)
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{
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struct ep_device *ep_dev;
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int retval;
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ep_dev = kzalloc(sizeof(*ep_dev), GFP_KERNEL);
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if (!ep_dev) {
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retval = -ENOMEM;
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goto exit;
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}
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ep_dev->desc = &endpoint->desc;
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ep_dev->udev = udev;
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ep_dev->dev.groups = ep_dev_groups;
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ep_dev->dev.type = &usb_ep_device_type;
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ep_dev->dev.parent = parent;
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dev_set_name(&ep_dev->dev, "ep_%02x", endpoint->desc.bEndpointAddress);
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retval = device_register(&ep_dev->dev);
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if (retval)
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goto error_register;
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device_enable_async_suspend(&ep_dev->dev);
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endpoint->ep_dev = ep_dev;
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return retval;
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error_register:
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put_device(&ep_dev->dev);
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exit:
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return retval;
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}
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void usb_remove_ep_devs(struct usb_host_endpoint *endpoint)
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{
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struct ep_device *ep_dev = endpoint->ep_dev;
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if (ep_dev) {
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device_unregister(&ep_dev->dev);
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endpoint->ep_dev = NULL;
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}
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}
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