--- /dev/null
+/*
+ * 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 Thyrén <erth7411@student.uu.se>
+ *
+ * Based on usbmouse.c (Vojtech Pavlik) and xpad.c (Marko Friedemann)
+ *
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include "usb.h"
+#include "onetouch.h"
+#include "debug.h"
+
+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;
+};
+
+static void usb_onetouch_irq(struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_onetouch *onetouch = urb->context;
+ signed char *data = onetouch->data;
+ struct input_dev *dev = &onetouch->dev;
+ int status;
+
+ switch (urb->status) {
+ case 0: /* success */
+ break;
+ case -ECONNRESET: /* unlink */
+ case -ENOENT:
+ case -ESHUTDOWN:
+ return;
+ /* -EPIPE: should clear the halt */
+ default: /* error */
+ goto resubmit;
+ }
+
+ input_regs(dev, regs);
+
+ input_report_key(&onetouch->dev, ONETOUCH_BUTTON,
+ data[0] & 0x02);
+
+ input_sync(dev);
+resubmit:
+ status = usb_submit_urb (urb, SLAB_ATOMIC);
+ if (status)
+ err ("can't resubmit intr, %s-%s/input0, status %d",
+ onetouch->udev->bus->bus_name,
+ onetouch->udev->devpath, status);
+}
+
+static int usb_onetouch_open(struct input_dev *dev)
+{
+ struct usb_onetouch *onetouch = dev->private;
+
+ onetouch->irq->dev = onetouch->udev;
+ if (usb_submit_urb(onetouch->irq, GFP_KERNEL)) {
+ err("usb_submit_urb failed");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static void usb_onetouch_close(struct input_dev *dev)
+{
+ struct usb_onetouch *onetouch = dev->private;
+
+ usb_kill_urb(onetouch->irq);
+}
+
+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;
+ int pipe, maxp;
+ char path[64];
+
+ interface = ss->pusb_intf->cur_altsetting;
+
+ endpoint = &interface->endpoint[2].desc;
+ if(!(endpoint->bEndpointAddress & 0x80))
+ return -ENODEV;
+ if((endpoint->bmAttributes & 3) != 3)
+ return -ENODEV;
+
+ pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
+ maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+
+ if (!(onetouch = kcalloc(1, sizeof(struct usb_onetouch), GFP_KERNEL)))
+ return -ENOMEM;
+
+ onetouch->data = usb_buffer_alloc(udev, ONETOUCH_PKT_LEN, SLAB_ATOMIC, &onetouch->data_dma);
+ if (!onetouch->data){
+ kfree(onetouch);
+ return -ENOMEM;
+ }
+
+ onetouch->irq = usb_alloc_urb(0, GFP_KERNEL);
+ if (!onetouch->irq){
+ kfree(onetouch);
+ usb_buffer_free(udev, ONETOUCH_PKT_LEN, onetouch->data, onetouch->data_dma);
+ return -ENODEV;
+ }
+
+
+ onetouch->udev = udev;
+
+ set_bit(EV_KEY, onetouch->dev.evbit);
+ set_bit(ONETOUCH_BUTTON, onetouch->dev.keybit);
+ clear_bit(0, onetouch->dev.keybit);
+
+ onetouch->dev.private = onetouch;
+ onetouch->dev.open = usb_onetouch_open;
+ onetouch->dev.close = usb_onetouch_close;
+
+ usb_make_path(udev, path, 64);
+ sprintf(onetouch->phys, "%s/input0", path);
+
+ onetouch->dev.name = onetouch->name;
+ onetouch->dev.phys = onetouch->phys;
+
+ onetouch->dev.id.bustype = BUS_USB;
+ onetouch->dev.id.vendor = le16_to_cpu(udev->descriptor.idVendor);
+ onetouch->dev.id.product = le16_to_cpu(udev->descriptor.idProduct);
+ onetouch->dev.id.version = le16_to_cpu(udev->descriptor.bcdDevice);
+
+ onetouch->dev.dev = &udev->dev;
+
+ if (udev->manufacturer)
+ strcat(onetouch->name, udev->manufacturer);
+ if (udev->product)
+ sprintf(onetouch->name, "%s %s", onetouch->name,
+ udev->product);
+ if (!strlen(onetouch->name))
+ sprintf(onetouch->name, "Maxtor Onetouch %04x:%04x",
+ onetouch->dev.id.vendor, onetouch->dev.id.product);
+
+ usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data,
+ (maxp > 8 ? 8 : 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;
+
+ input_register_device(&onetouch->dev);
+ printk(KERN_INFO "usb-input: %s on %s\n", onetouch->dev.name, path);
+
+ return 0;
+}
+
+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_buffer_free(onetouch->udev, ONETOUCH_PKT_LEN,
+ onetouch->data, onetouch->data_dma);
+ printk(KERN_INFO "Maxtor Onetouch %04x:%04x Deregistered\n",
+ onetouch->dev.id.vendor, onetouch->dev.id.product);
+ }
+}
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff