Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 310 insertions, 0 deletions

diff --git a/drivers/usb/input/touchkitusb.c b/drivers/usb/input/touchkitusb.c
new file mode 100644
index 000000000000..a71f1bbd0a17
--- /dev/null
+++ b/drivers/usb/input/touchkitusb.c
@@ -0,0 +1,310 @@
+/******************************************************************************
+ * touchkitusb.c  --  Driver for eGalax TouchKit USB Touchscreens
+ *
+ * Copyright (C) 2004 by Daniel Ritz
+ * Copyright (C) by Todd E. Johnson (mtouchusb.c)
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Based upon mtouchusb.c
+ *
+ *****************************************************************************/
+
+//#define DEBUG
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+#if !defined(DEBUG) && defined(CONFIG_USB_DEBUG)
+#define DEBUG
+#endif
+#include <linux/usb.h>
+
+
+#define TOUCHKIT_MIN_XC                 0x0
+#define TOUCHKIT_MAX_XC                 0x07ff
+#define TOUCHKIT_XC_FUZZ                0x0
+#define TOUCHKIT_XC_FLAT                0x0
+#define TOUCHKIT_MIN_YC                 0x0
+#define TOUCHKIT_MAX_YC                 0x07ff
+#define TOUCHKIT_YC_FUZZ                0x0
+#define TOUCHKIT_YC_FLAT                0x0
+#define TOUCHKIT_REPORT_DATA_SIZE       8
+
+#define TOUCHKIT_DOWN                   0x01
+#define TOUCHKIT_POINT_TOUCH            0x81
+#define TOUCHKIT_POINT_NOTOUCH          0x80
+
+#define TOUCHKIT_GET_TOUCHED(dat)       ((((dat)[0]) & TOUCHKIT_DOWN) ? 1 : 0)
+#define TOUCHKIT_GET_X(dat)             (((dat)[3] << 7) | (dat)[4])
+#define TOUCHKIT_GET_Y(dat)             (((dat)[1] << 7) | (dat)[2])
+
+#define DRIVER_VERSION                  "v0.1"
+#define DRIVER_AUTHOR                   "Daniel Ritz <daniel.ritz@gmx.ch>"
+#define DRIVER_DESC                     "eGalax TouchKit USB HID Touchscreen Driver"
+
+static int swap_xy;
+module_param(swap_xy, bool, 0644);
+MODULE_PARM_DESC(swap_xy, "If set X and Y axes are swapped.");
+
+struct touchkit_usb {
+        unsigned char *data;
+        dma_addr_t data_dma;
+        struct urb *irq;
+        struct usb_device *udev;
+        struct input_dev input;
+        int open;
+        char name[128];
+        char phys[64];
+};
+
+static struct usb_device_id touchkit_devices[] = {
+        {USB_DEVICE(0x3823, 0x0001)},
+        {USB_DEVICE(0x0eef, 0x0001)},
+        {}
+};
+
+static void touchkit_irq(struct urb *urb, struct pt_regs *regs)
+{
+        struct touchkit_usb *touchkit = urb->context;
+        int retval;
+        int x, y;
+
+        switch (urb->status) {
+        case 0:
+                /* success */
+                break;
+        case -ETIMEDOUT:
+                /* this urb is timing out */
+                dbg("%s - urb timed out - was the device unplugged?",
+                    __FUNCTION__);
+                return;
+        case -ECONNRESET:
+        case -ENOENT:
+        case -ESHUTDOWN:
+                /* this urb is terminated, clean up */
+                dbg("%s - urb shutting down with status: %d",
+                    __FUNCTION__, urb->status);
+                return;
+        default:
+                dbg("%s - nonzero urb status received: %d",
+                    __FUNCTION__, urb->status);
+                goto exit;
+        }
+
+        if (swap_xy) {
+                y = TOUCHKIT_GET_X(touchkit->data);
+                x = TOUCHKIT_GET_Y(touchkit->data);
+        } else {
+                x = TOUCHKIT_GET_X(touchkit->data);
+                y = TOUCHKIT_GET_Y(touchkit->data);
+        }
+
+        input_regs(&touchkit->input, regs);
+        input_report_key(&touchkit->input, BTN_TOUCH,
+                         TOUCHKIT_GET_TOUCHED(touchkit->data));
+        input_report_abs(&touchkit->input, ABS_X, x);
+        input_report_abs(&touchkit->input, ABS_Y, y);
+        input_sync(&touchkit->input);
+
+exit:
+        retval = usb_submit_urb(urb, GFP_ATOMIC);
+        if (retval)
+                err("%s - usb_submit_urb failed with result: %d",
+                    __FUNCTION__, retval);
+}
+
+static int touchkit_open(struct input_dev *input)
+{
+        struct touchkit_usb *touchkit = input->private;
+
+        if (touchkit->open++)
+                return 0;
+
+        touchkit->irq->dev = touchkit->udev;
+
+        if (usb_submit_urb(touchkit->irq, GFP_ATOMIC)) {
+                touchkit->open--;
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static void touchkit_close(struct input_dev *input)
+{
+        struct touchkit_usb *touchkit = input->private;
+
+        if (!--touchkit->open)
+                usb_kill_urb(touchkit->irq);
+}
+
+static int touchkit_alloc_buffers(struct usb_device *udev,
+                                  struct touchkit_usb *touchkit)
+{
+        touchkit->data = usb_buffer_alloc(udev, TOUCHKIT_REPORT_DATA_SIZE,
+                                          SLAB_ATOMIC, &touchkit->data_dma);
+
+        if (!touchkit->data)
+                return -1;
+
+        return 0;
+}
+
+static void touchkit_free_buffers(struct usb_device *udev,
+                                  struct touchkit_usb *touchkit)
+{
+        if (touchkit->data)
+                usb_buffer_free(udev, TOUCHKIT_REPORT_DATA_SIZE,
+                                touchkit->data, touchkit->data_dma);
+}
+
+static int touchkit_probe(struct usb_interface *intf,
+                          const struct usb_device_id *id)
+{
+        int ret;
+        struct touchkit_usb *touchkit;
+        struct usb_host_interface *interface;
+        struct usb_endpoint_descriptor *endpoint;
+        struct usb_device *udev = interface_to_usbdev(intf);
+        char path[64];
+
+        interface = intf->cur_altsetting;
+        endpoint = &interface->endpoint[0].desc;
+
+        touchkit = kmalloc(sizeof(struct touchkit_usb), GFP_KERNEL);
+        if (!touchkit)
+                return -ENOMEM;
+
+        memset(touchkit, 0, sizeof(struct touchkit_usb));
+        touchkit->udev = udev;
+
+        if (touchkit_alloc_buffers(udev, touchkit)) {
+                ret = -ENOMEM;
+                goto out_free;
+        }
+
+        touchkit->input.private = touchkit;
+        touchkit->input.open = touchkit_open;
+        touchkit->input.close = touchkit_close;
+
+        usb_make_path(udev, path, 64);
+        sprintf(touchkit->phys, "%s/input0", path);
+
+        touchkit->input.name = touchkit->name;
+        touchkit->input.phys = touchkit->phys;
+        touchkit->input.id.bustype = BUS_USB;
+        touchkit->input.id.vendor = le16_to_cpu(udev->descriptor.idVendor);
+        touchkit->input.id.product = le16_to_cpu(udev->descriptor.idProduct);
+        touchkit->input.id.version = le16_to_cpu(udev->descriptor.bcdDevice);
+        touchkit->input.dev = &intf->dev;
+
+        touchkit->input.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+        touchkit->input.absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+        touchkit->input.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+
+        /* Used to Scale Compensated Data */
+        touchkit->input.absmin[ABS_X] = TOUCHKIT_MIN_XC;
+        touchkit->input.absmax[ABS_X] = TOUCHKIT_MAX_XC;
+        touchkit->input.absfuzz[ABS_X] = TOUCHKIT_XC_FUZZ;
+        touchkit->input.absflat[ABS_X] = TOUCHKIT_XC_FLAT;
+        touchkit->input.absmin[ABS_Y] = TOUCHKIT_MIN_YC;
+        touchkit->input.absmax[ABS_Y] = TOUCHKIT_MAX_YC;
+        touchkit->input.absfuzz[ABS_Y] = TOUCHKIT_YC_FUZZ;
+        touchkit->input.absflat[ABS_Y] = TOUCHKIT_YC_FLAT;
+
+        if (udev->manufacturer)
+                strcat(touchkit->name, udev->manufacturer);
+        if (udev->product)
+                sprintf(touchkit->name, "%s %s", touchkit->name, udev->product);
+
+        if (!strlen(touchkit->name))
+                sprintf(touchkit->name, "USB Touchscreen %04x:%04x",
+                        touchkit->input.id.vendor, touchkit->input.id.product);
+
+        touchkit->irq = usb_alloc_urb(0, GFP_KERNEL);
+        if (!touchkit->irq) {
+                dbg("%s - usb_alloc_urb failed: touchkit->irq", __FUNCTION__);
+                ret = -ENOMEM;
+                goto out_free_buffers;
+        }
+
+        usb_fill_int_urb(touchkit->irq, touchkit->udev,
+                         usb_rcvintpipe(touchkit->udev, 0x81),
+                         touchkit->data, TOUCHKIT_REPORT_DATA_SIZE,
+                         touchkit_irq, touchkit, endpoint->bInterval);
+
+        input_register_device(&touchkit->input);
+
+        printk(KERN_INFO "input: %s on %s\n", touchkit->name, path);
+        usb_set_intfdata(intf, touchkit);
+
+        return 0;
+
+out_free_buffers:
+        touchkit_free_buffers(udev, touchkit);
+out_free:
+        kfree(touchkit);
+        return ret;
+}
+
+static void touchkit_disconnect(struct usb_interface *intf)
+{
+        struct touchkit_usb *touchkit = usb_get_intfdata(intf);
+
+        dbg("%s - called", __FUNCTION__);
+
+        if (!touchkit)
+                return;
+
+        dbg("%s - touchkit is initialized, cleaning up", __FUNCTION__);
+        usb_set_intfdata(intf, NULL);
+        input_unregister_device(&touchkit->input);
+        usb_kill_urb(touchkit->irq);
+        usb_free_urb(touchkit->irq);
+        touchkit_free_buffers(interface_to_usbdev(intf), touchkit);
+        kfree(touchkit);
+}
+
+MODULE_DEVICE_TABLE(usb, touchkit_devices);
+
+static struct usb_driver touchkit_driver = {
+        .owner          = THIS_MODULE,
+        .name           = "touchkitusb",
+        .probe          = touchkit_probe,
+        .disconnect     = touchkit_disconnect,
+        .id_table       = touchkit_devices,
+};
+
+static int __init touchkit_init(void)
+{
+        return usb_register(&touchkit_driver);
+}
+
+static void __exit touchkit_cleanup(void)
+{
+        usb_deregister(&touchkit_driver);
+}
+
+module_init(touchkit_init);
+module_exit(touchkit_cleanup);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");