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https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
158 lines
3.7 KiB
C
158 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <usb.h>
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#include <dm/root.h>
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struct sandbox_usb_ctrl {
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int rootdev;
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};
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static void usbmon_trace(struct udevice *bus, ulong pipe,
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struct devrequest *setup, struct udevice *emul)
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{
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static const char types[] = "ZICB";
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int type;
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type = (pipe & USB_PIPE_TYPE_MASK) >> USB_PIPE_TYPE_SHIFT;
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debug("0 0 S %c%c:%d:%03ld:%ld", types[type],
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pipe & USB_DIR_IN ? 'i' : 'o',
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bus->seq,
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(pipe & USB_PIPE_DEV_MASK) >> USB_PIPE_DEV_SHIFT,
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(pipe & USB_PIPE_EP_MASK) >> USB_PIPE_EP_SHIFT);
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if (setup) {
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debug(" s %02x %02x %04x %04x %04x", setup->requesttype,
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setup->request, setup->value, setup->index,
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setup->length);
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}
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debug(" %s", emul ? emul->name : "(no emul found)");
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debug("\n");
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}
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static int sandbox_submit_control(struct udevice *bus,
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struct usb_device *udev,
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unsigned long pipe,
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void *buffer, int length,
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struct devrequest *setup)
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{
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struct sandbox_usb_ctrl *ctrl = dev_get_priv(bus);
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struct udevice *emul;
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int ret;
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/* Just use child of dev as emulator? */
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debug("%s: bus=%s\n", __func__, bus->name);
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ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
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usbmon_trace(bus, pipe, setup, emul);
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if (ret)
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return ret;
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if (usb_pipedevice(pipe) == ctrl->rootdev) {
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if (setup->request == USB_REQ_SET_ADDRESS) {
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debug("%s: Set root hub's USB address\n", __func__);
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ctrl->rootdev = le16_to_cpu(setup->value);
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}
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}
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ret = usb_emul_control(emul, udev, pipe, buffer, length, setup);
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if (ret < 0) {
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debug("ret=%d\n", ret);
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udev->status = ret;
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udev->act_len = 0;
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} else {
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udev->status = 0;
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udev->act_len = ret;
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}
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return ret;
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}
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static int sandbox_submit_bulk(struct udevice *bus, struct usb_device *udev,
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unsigned long pipe, void *buffer, int length)
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{
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struct udevice *emul;
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int ret;
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/* Just use child of dev as emulator? */
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debug("%s: bus=%s\n", __func__, bus->name);
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ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
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usbmon_trace(bus, pipe, NULL, emul);
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if (ret)
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return ret;
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ret = usb_emul_bulk(emul, udev, pipe, buffer, length);
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if (ret < 0) {
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debug("ret=%d\n", ret);
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udev->status = ret;
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udev->act_len = 0;
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} else {
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udev->status = 0;
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udev->act_len = ret;
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}
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return ret;
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}
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static int sandbox_submit_int(struct udevice *bus, struct usb_device *udev,
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unsigned long pipe, void *buffer, int length,
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int interval)
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{
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struct udevice *emul;
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int ret;
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/* Just use child of dev as emulator? */
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debug("%s: bus=%s\n", __func__, bus->name);
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ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
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usbmon_trace(bus, pipe, NULL, emul);
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if (ret)
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return ret;
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ret = usb_emul_int(emul, udev, pipe, buffer, length, interval);
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return ret;
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}
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static int sandbox_alloc_device(struct udevice *dev, struct usb_device *udev)
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{
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struct sandbox_usb_ctrl *ctrl = dev_get_priv(dev);
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/*
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* Root hub will be the first device to be initailized.
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* If this device is a root hub, initialize its device speed
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* to high speed as we are a USB 2.0 controller.
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*/
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if (ctrl->rootdev == 0)
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udev->speed = USB_SPEED_HIGH;
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return 0;
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}
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static int sandbox_usb_probe(struct udevice *dev)
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{
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return 0;
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}
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static const struct dm_usb_ops sandbox_usb_ops = {
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.control = sandbox_submit_control,
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.bulk = sandbox_submit_bulk,
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.interrupt = sandbox_submit_int,
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.alloc_device = sandbox_alloc_device,
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};
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static const struct udevice_id sandbox_usb_ids[] = {
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{ .compatible = "sandbox,usb" },
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{ }
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};
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U_BOOT_DRIVER(usb_sandbox) = {
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.name = "usb_sandbox",
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.id = UCLASS_USB,
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.of_match = sandbox_usb_ids,
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.probe = sandbox_usb_probe,
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.ops = &sandbox_usb_ops,
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.priv_auto_alloc_size = sizeof(struct sandbox_usb_ctrl),
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};
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