USB: Move wusbcore and UWB to staging as it is obsolete

The UWB and wusbcore code is long obsolete, so let us just move the code
out of the real part of the kernel and into the drivers/staging/
location with plans to remove it entirely in a few releases.

Link: https://lore.kernel.org/r/20190806101509.GA11280@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 124 insertions, 0 deletions

diff --git a/drivers/staging/wusbcore/dev-sysfs.c b/drivers/staging/wusbcore/dev-sysfs.c
new file mode 100644
index 000000000000..67b0a4c412b2
--- /dev/null
+++ b/drivers/staging/wusbcore/dev-sysfs.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * WUSB devices
+ * sysfs bindings
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * Get them out of the way...
+ */
+
+#include <linux/jiffies.h>
+#include <linux/ctype.h>
+#include <linux/workqueue.h>
+#include "wusbhc.h"
+
+static ssize_t wusb_disconnect_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t size)
+{
+	struct usb_device *usb_dev;
+	struct wusbhc *wusbhc;
+	unsigned command;
+	u8 port_idx;
+
+	if (sscanf(buf, "%u", &command) != 1)
+		return -EINVAL;
+	if (command == 0)
+		return size;
+	usb_dev = to_usb_device(dev);
+	wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+	if (wusbhc == NULL)
+		return -ENODEV;
+
+	mutex_lock(&wusbhc->mutex);
+	port_idx = wusb_port_no_to_idx(usb_dev->portnum);
+	__wusbhc_dev_disable(wusbhc, port_idx);
+	mutex_unlock(&wusbhc->mutex);
+	wusbhc_put(wusbhc);
+	return size;
+}
+static DEVICE_ATTR_WO(wusb_disconnect);
+
+static ssize_t wusb_cdid_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	ssize_t result;
+	struct wusb_dev *wusb_dev;
+
+	wusb_dev = wusb_dev_get_by_usb_dev(to_usb_device(dev));
+	if (wusb_dev == NULL)
+		return -ENODEV;
+	result = sprintf(buf, "%16ph\n", wusb_dev->cdid.data);
+	wusb_dev_put(wusb_dev);
+	return result;
+}
+static DEVICE_ATTR_RO(wusb_cdid);
+
+static ssize_t wusb_ck_store(struct device *dev,
+			     struct device_attribute *attr,
+			     const char *buf, size_t size)
+{
+	int result;
+	struct usb_device *usb_dev;
+	struct wusbhc *wusbhc;
+	struct wusb_ckhdid ck;
+
+	result = sscanf(buf,
+			"%02hhx %02hhx %02hhx %02hhx "
+			"%02hhx %02hhx %02hhx %02hhx "
+			"%02hhx %02hhx %02hhx %02hhx "
+			"%02hhx %02hhx %02hhx %02hhx\n",
+			&ck.data[0] , &ck.data[1],
+			&ck.data[2] , &ck.data[3],
+			&ck.data[4] , &ck.data[5],
+			&ck.data[6] , &ck.data[7],
+			&ck.data[8] , &ck.data[9],
+			&ck.data[10], &ck.data[11],
+			&ck.data[12], &ck.data[13],
+			&ck.data[14], &ck.data[15]);
+	if (result != 16)
+		return -EINVAL;
+
+	usb_dev = to_usb_device(dev);
+	wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+	if (wusbhc == NULL)
+		return -ENODEV;
+	result = wusb_dev_4way_handshake(wusbhc, usb_dev->wusb_dev, &ck);
+	memzero_explicit(&ck, sizeof(ck));
+	wusbhc_put(wusbhc);
+	return result < 0 ? result : size;
+}
+static DEVICE_ATTR_WO(wusb_ck);
+
+static struct attribute *wusb_dev_attrs[] = {
+		&dev_attr_wusb_disconnect.attr,
+		&dev_attr_wusb_cdid.attr,
+		&dev_attr_wusb_ck.attr,
+		NULL,
+};
+
+static const struct attribute_group wusb_dev_attr_group = {
+	.name = NULL,	/* we want them in the same directory */
+	.attrs = wusb_dev_attrs,
+};
+
+int wusb_dev_sysfs_add(struct wusbhc *wusbhc, struct usb_device *usb_dev,
+		       struct wusb_dev *wusb_dev)
+{
+	int result = sysfs_create_group(&usb_dev->dev.kobj,
+					&wusb_dev_attr_group);
+	struct device *dev = &usb_dev->dev;
+	if (result < 0)
+		dev_err(dev, "Cannot register WUSB-dev attributes: %d\n",
+			result);
+	return result;
+}
+
+void wusb_dev_sysfs_rm(struct wusb_dev *wusb_dev)
+{
+	struct usb_device *usb_dev = wusb_dev->usb_dev;
+	if (usb_dev)
+		sysfs_remove_group(&usb_dev->dev.kobj, &wusb_dev_attr_group);
+}