1 files changed, 307 insertions, 0 deletions
diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c
new file mode 100644
index 000000000..01f3c2779
--- /dev/null
+++ b/drivers/usb/storage/onetouch.c
@@ -0,0 +1,307 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Support for the Maxtor OneTouch USB hard drive's button
+ *
+ * Current development and maintenance by:
+ *	Copyright (c) 2005 Nick Sillik <n.sillik@temple.edu>
+ *
+ * Initial work by:
+ *	Copyright (c) 2003 Erik Thyren <erth7411@student.uu.se>
+ *
+ * Based on usbmouse.c (Vojtech Pavlik) and xpad.c (Marko Friedemann)
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/usb/input.h>
+#include "usb.h"
+#include "debug.h"
+#include "scsiglue.h"
+
+#define DRV_NAME "ums-onetouch"
+
+MODULE_DESCRIPTION("Maxtor USB OneTouch hard drive button driver");
+MODULE_AUTHOR("Nick Sillik <n.sillik@temple.edu>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(USB_STORAGE);
+
+#define ONETOUCH_PKT_LEN        0x02
+#define ONETOUCH_BUTTON         KEY_PROG1
+
+static int onetouch_connect_input(struct us_data *ss);
+static void onetouch_release_input(void *onetouch_);
+
+struct usb_onetouch {
+	char name[128];
+	char phys[64];
+	struct input_dev *dev;	/* input device interface */
+	struct usb_device *udev;	/* usb device */
+
+	struct urb *irq;	/* urb for interrupt in report */
+	unsigned char *data;	/* input data */
+	dma_addr_t data_dma;
+	unsigned int is_open:1;
+};
+
+
+/*
+ * The table of devices
+ */
+#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
+		    vendorName, productName, useProtocol, useTransport, \
+		    initFunction, flags) \
+{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
+  .driver_info = (flags) }
+
+static struct usb_device_id onetouch_usb_ids[] = {
+#	include "unusual_onetouch.h"
+	{ }		/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, onetouch_usb_ids);
+
+#undef UNUSUAL_DEV
+
+/*
+ * The flags table
+ */
+#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
+		    vendor_name, product_name, use_protocol, use_transport, \
+		    init_function, Flags) \
+{ \
+	.vendorName = vendor_name,	\
+	.productName = product_name,	\
+	.useProtocol = use_protocol,	\
+	.useTransport = use_transport,	\
+	.initFunction = init_function,	\
+}
+
+static struct us_unusual_dev onetouch_unusual_dev_list[] = {
+#	include "unusual_onetouch.h"
+	{ }		/* Terminating entry */
+};
+
+#undef UNUSUAL_DEV
+
+
+static void usb_onetouch_irq(struct urb *urb)
+{
+	struct usb_onetouch *onetouch = urb->context;
+	signed char *data = onetouch->data;
+	struct input_dev *dev = onetouch->dev;
+	int status = urb->status;
+	int retval;
+
+	switch (status) {
+	case 0:			/* success */
+		break;
+	case -ECONNRESET:	/* unlink */
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+	/* -EPIPE:  should clear the halt */
+	default:		/* error */
+		goto resubmit;
+	}
+
+	input_report_key(dev, ONETOUCH_BUTTON, data[0] & 0x02);
+	input_sync(dev);
+
+resubmit:
+	retval = usb_submit_urb (urb, GFP_ATOMIC);
+	if (retval)
+		dev_err(&dev->dev, "can't resubmit intr, %s-%s/input0, "
+			"retval %d\n", onetouch->udev->bus->bus_name,
+			onetouch->udev->devpath, retval);
+}
+
+static int usb_onetouch_open(struct input_dev *dev)
+{
+	struct usb_onetouch *onetouch = input_get_drvdata(dev);
+
+	onetouch->is_open = 1;
+	onetouch->irq->dev = onetouch->udev;
+	if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) {
+		dev_err(&dev->dev, "usb_submit_urb failed\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static void usb_onetouch_close(struct input_dev *dev)
+{
+	struct usb_onetouch *onetouch = input_get_drvdata(dev);
+
+	usb_kill_urb(onetouch->irq);
+	onetouch->is_open = 0;
+}
+
+#ifdef CONFIG_PM
+static void usb_onetouch_pm_hook(struct us_data *us, int action)
+{
+	struct usb_onetouch *onetouch = (struct usb_onetouch *) us->extra;
+
+	if (onetouch->is_open) {
+		switch (action) {
+		case US_SUSPEND:
+			usb_kill_urb(onetouch->irq);
+			break;
+		case US_RESUME:
+			if (usb_submit_urb(onetouch->irq, GFP_NOIO) != 0)
+				dev_err(&onetouch->irq->dev->dev,
+					"usb_submit_urb failed\n");
+			break;
+		default:
+			break;
+		}
+	}
+}
+#endif /* CONFIG_PM */
+
+static int onetouch_connect_input(struct us_data *ss)
+{
+	struct usb_device *udev = ss->pusb_dev;
+	struct usb_host_interface *interface;
+	struct usb_endpoint_descriptor *endpoint;
+	struct usb_onetouch *onetouch;
+	struct input_dev *input_dev;
+	int pipe, maxp;
+	int error = -ENOMEM;
+
+	interface = ss->pusb_intf->cur_altsetting;
+
+	if (interface->desc.bNumEndpoints != 3)
+		return -ENODEV;
+
+	endpoint = &interface->endpoint[2].desc;
+	if (!usb_endpoint_is_int_in(endpoint))
+		return -ENODEV;
+
+	pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
+	maxp = usb_maxpacket(udev, pipe);
+	maxp = min(maxp, ONETOUCH_PKT_LEN);
+
+	onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!onetouch || !input_dev)
+		goto fail1;
+
+	onetouch->data = usb_alloc_coherent(udev, ONETOUCH_PKT_LEN,
+					    GFP_KERNEL, &onetouch->data_dma);
+	if (!onetouch->data)
+		goto fail1;
+
+	onetouch->irq = usb_alloc_urb(0, GFP_KERNEL);
+	if (!onetouch->irq)
+		goto fail2;
+
+	onetouch->udev = udev;
+	onetouch->dev = input_dev;
+
+	if (udev->manufacturer)
+		strscpy(onetouch->name, udev->manufacturer,
+			sizeof(onetouch->name));
+	if (udev->product) {
+		if (udev->manufacturer)
+			strlcat(onetouch->name, " ", sizeof(onetouch->name));
+		strlcat(onetouch->name, udev->product, sizeof(onetouch->name));
+	}
+
+	if (!strlen(onetouch->name))
+		snprintf(onetouch->name, sizeof(onetouch->name),
+			 "Maxtor Onetouch %04x:%04x",
+			 le16_to_cpu(udev->descriptor.idVendor),
+			 le16_to_cpu(udev->descriptor.idProduct));
+
+	usb_make_path(udev, onetouch->phys, sizeof(onetouch->phys));
+	strlcat(onetouch->phys, "/input0", sizeof(onetouch->phys));
+
+	input_dev->name = onetouch->name;
+	input_dev->phys = onetouch->phys;
+	usb_to_input_id(udev, &input_dev->id);
+	input_dev->dev.parent = &udev->dev;
+
+	set_bit(EV_KEY, input_dev->evbit);
+	set_bit(ONETOUCH_BUTTON, input_dev->keybit);
+	clear_bit(0, input_dev->keybit);
+
+	input_set_drvdata(input_dev, onetouch);
+
+	input_dev->open = usb_onetouch_open;
+	input_dev->close = usb_onetouch_close;
+
+	usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data, maxp,
+			 usb_onetouch_irq, onetouch, endpoint->bInterval);
+	onetouch->irq->transfer_dma = onetouch->data_dma;
+	onetouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+	ss->extra_destructor = onetouch_release_input;
+	ss->extra = onetouch;
+#ifdef CONFIG_PM
+	ss->suspend_resume_hook = usb_onetouch_pm_hook;
+#endif
+
+	error = input_register_device(onetouch->dev);
+	if (error)
+		goto fail3;
+
+	return 0;
+
+ fail3:	usb_free_urb(onetouch->irq);
+ fail2:	usb_free_coherent(udev, ONETOUCH_PKT_LEN,
+			  onetouch->data, onetouch->data_dma);
+ fail1:	kfree(onetouch);
+	input_free_device(input_dev);
+	return error;
+}
+
+static void onetouch_release_input(void *onetouch_)
+{
+	struct usb_onetouch *onetouch = (struct usb_onetouch *) onetouch_;
+
+	if (onetouch) {
+		usb_kill_urb(onetouch->irq);
+		input_unregister_device(onetouch->dev);
+		usb_free_urb(onetouch->irq);
+		usb_free_coherent(onetouch->udev, ONETOUCH_PKT_LEN,
+				  onetouch->data, onetouch->data_dma);
+	}
+}
+
+static struct scsi_host_template onetouch_host_template;
+
+static int onetouch_probe(struct usb_interface *intf,
+			 const struct usb_device_id *id)
+{
+	struct us_data *us;
+	int result;
+
+	result = usb_stor_probe1(&us, intf, id,
+			(id - onetouch_usb_ids) + onetouch_unusual_dev_list,
+			&onetouch_host_template);
+	if (result)
+		return result;
+
+	/* Use default transport and protocol */
+
+	result = usb_stor_probe2(us);
+	return result;
+}
+
+static struct usb_driver onetouch_driver = {
+	.name =		DRV_NAME,
+	.probe =	onetouch_probe,
+	.disconnect =	usb_stor_disconnect,
+	.suspend =	usb_stor_suspend,
+	.resume =	usb_stor_resume,
+	.reset_resume =	usb_stor_reset_resume,
+	.pre_reset =	usb_stor_pre_reset,
+	.post_reset =	usb_stor_post_reset,
+	.id_table =	onetouch_usb_ids,
+	.soft_unbind =	1,
+	.no_dynamic_id = 1,
+};
+
+module_usb_stor_driver(onetouch_driver, onetouch_host_template, DRV_NAME);