u-boot/drivers/usb/host/usb-sandbox.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
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>
2018-05-07 09:34:12 -04:00

157 lines
3.7 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <dm.h>
#include <usb.h>
#include <dm/root.h>
struct sandbox_usb_ctrl {
int rootdev;
};
static void usbmon_trace(struct udevice *bus, ulong pipe,
struct devrequest *setup, struct udevice *emul)
{
static const char types[] = "ZICB";
int type;
type = (pipe & USB_PIPE_TYPE_MASK) >> USB_PIPE_TYPE_SHIFT;
debug("0 0 S %c%c:%d:%03ld:%ld", types[type],
pipe & USB_DIR_IN ? 'i' : 'o',
bus->seq,
(pipe & USB_PIPE_DEV_MASK) >> USB_PIPE_DEV_SHIFT,
(pipe & USB_PIPE_EP_MASK) >> USB_PIPE_EP_SHIFT);
if (setup) {
debug(" s %02x %02x %04x %04x %04x", setup->requesttype,
setup->request, setup->value, setup->index,
setup->length);
}
debug(" %s", emul ? emul->name : "(no emul found)");
debug("\n");
}
static int sandbox_submit_control(struct udevice *bus,
struct usb_device *udev,
unsigned long pipe,
void *buffer, int length,
struct devrequest *setup)
{
struct sandbox_usb_ctrl *ctrl = dev_get_priv(bus);
struct udevice *emul;
int ret;
/* Just use child of dev as emulator? */
debug("%s: bus=%s\n", __func__, bus->name);
ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
usbmon_trace(bus, pipe, setup, emul);
if (ret)
return ret;
if (usb_pipedevice(pipe) == ctrl->rootdev) {
if (setup->request == USB_REQ_SET_ADDRESS) {
debug("%s: Set root hub's USB address\n", __func__);
ctrl->rootdev = le16_to_cpu(setup->value);
}
}
ret = usb_emul_control(emul, udev, pipe, buffer, length, setup);
if (ret < 0) {
debug("ret=%d\n", ret);
udev->status = ret;
udev->act_len = 0;
} else {
udev->status = 0;
udev->act_len = ret;
}
return ret;
}
static int sandbox_submit_bulk(struct udevice *bus, struct usb_device *udev,
unsigned long pipe, void *buffer, int length)
{
struct udevice *emul;
int ret;
/* Just use child of dev as emulator? */
debug("%s: bus=%s\n", __func__, bus->name);
ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
usbmon_trace(bus, pipe, NULL, emul);
if (ret)
return ret;
ret = usb_emul_bulk(emul, udev, pipe, buffer, length);
if (ret < 0) {
debug("ret=%d\n", ret);
udev->status = ret;
udev->act_len = 0;
} else {
udev->status = 0;
udev->act_len = ret;
}
return ret;
}
static int sandbox_submit_int(struct udevice *bus, struct usb_device *udev,
unsigned long pipe, void *buffer, int length,
int interval)
{
struct udevice *emul;
int ret;
/* Just use child of dev as emulator? */
debug("%s: bus=%s\n", __func__, bus->name);
ret = usb_emul_find(bus, pipe, udev->portnr, &emul);
usbmon_trace(bus, pipe, NULL, emul);
if (ret)
return ret;
ret = usb_emul_int(emul, udev, pipe, buffer, length, interval);
return ret;
}
static int sandbox_alloc_device(struct udevice *dev, struct usb_device *udev)
{
struct sandbox_usb_ctrl *ctrl = dev_get_priv(dev);
/*
* Root hub will be the first device to be initailized.
* If this device is a root hub, initialize its device speed
* to high speed as we are a USB 2.0 controller.
*/
if (ctrl->rootdev == 0)
udev->speed = USB_SPEED_HIGH;
return 0;
}
static int sandbox_usb_probe(struct udevice *dev)
{
return 0;
}
static const struct dm_usb_ops sandbox_usb_ops = {
.control = sandbox_submit_control,
.bulk = sandbox_submit_bulk,
.interrupt = sandbox_submit_int,
.alloc_device = sandbox_alloc_device,
};
static const struct udevice_id sandbox_usb_ids[] = {
{ .compatible = "sandbox,usb" },
{ }
};
U_BOOT_DRIVER(usb_sandbox) = {
.name = "usb_sandbox",
.id = UCLASS_USB,
.of_match = sandbox_usb_ids,
.probe = sandbox_usb_probe,
.ops = &sandbox_usb_ops,
.priv_auto_alloc_size = sizeof(struct sandbox_usb_ctrl),
};