Release 4.11 drivers/input/tablet/kbtab.c
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/usb/input.h>
#include <asm/unaligned.h>
/*
* Version Information
* v0.0.1 - Original, extremely basic version, 2.4.xx only
* v0.0.2 - Updated, works with 2.5.62 and 2.4.20;
* - added pressure-threshold modules param code from
* Alex Perry <alex.perry@ieee.org>
*/
#define DRIVER_VERSION "v0.0.2"
#define DRIVER_AUTHOR "Josh Myer <josh@joshisanerd.com>"
#define DRIVER_DESC "USB KB Gear JamStudio Tablet driver"
#define DRIVER_LICENSE "GPL"
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
#define USB_VENDOR_ID_KBGEAR 0x084e
static int kb_pressure_click = 0x10;
module_param(kb_pressure_click, int, 0);
MODULE_PARM_DESC(kb_pressure_click, "pressure threshold for clicks");
struct kbtab {
unsigned char *data;
dma_addr_t data_dma;
struct input_dev *dev;
struct usb_interface *intf;
struct urb *irq;
char phys[32];
};
static void kbtab_irq(struct urb *urb)
{
struct kbtab *kbtab = urb->context;
unsigned char *data = kbtab->data;
struct input_dev *dev = kbtab->dev;
int pressure;
int retval;
switch (urb->status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dev_dbg(&kbtab->intf->dev,
"%s - urb shutting down with status: %d\n",
__func__, urb->status);
return;
default:
dev_dbg(&kbtab->intf->dev,
"%s - nonzero urb status received: %d\n",
__func__, urb->status);
goto exit;
}
input_report_key(dev, BTN_TOOL_PEN, 1);
input_report_abs(dev, ABS_X, get_unaligned_le16(&data[1]));
input_report_abs(dev, ABS_Y, get_unaligned_le16(&data[3]));
/*input_report_key(dev, BTN_TOUCH , data[0] & 0x01);*/
input_report_key(dev, BTN_RIGHT, data[0] & 0x02);
pressure = data[5];
if (kb_pressure_click == -1)
input_report_abs(dev, ABS_PRESSURE, pressure);
else
input_report_key(dev, BTN_LEFT, pressure > kb_pressure_click ? 1 : 0);
input_sync(dev);
exit:
retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
dev_err(&kbtab->intf->dev,
"%s - usb_submit_urb failed with result %d\n",
__func__, retval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Josh Myer | 169 | 69.83% | 1 | 14.29% |
| Dmitry Torokhov | 28 | 11.57% | 1 | 14.29% |
| Greg Kroah-Hartman | 27 | 11.16% | 3 | 42.86% |
| Trent Whaley | 15 | 6.20% | 1 | 14.29% |
| Harvey Harrison | 3 | 1.24% | 1 | 14.29% |
| Total | 242 | 100.00% | 7 | 100.00% |
static struct usb_device_id kbtab_ids[] = {
{ USB_DEVICE(USB_VENDOR_ID_KBGEAR, 0x1001), .driver_info = 0 },
{ }
};
MODULE_DEVICE_TABLE(usb, kbtab_ids);
static int kbtab_open(struct input_dev *dev)
{
struct kbtab *kbtab = input_get_drvdata(dev);
struct usb_device *udev = interface_to_usbdev(kbtab->intf);
kbtab->irq->dev = udev;
if (usb_submit_urb(kbtab->irq, GFP_KERNEL))
return -EIO;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Josh Myer | 43 | 72.88% | 1 | 33.33% |
| Oliver Neukum | 13 | 22.03% | 1 | 33.33% |
| Dmitry Torokhov | 3 | 5.08% | 1 | 33.33% |
| Total | 59 | 100.00% | 3 | 100.00% |
static void kbtab_close(struct input_dev *dev)
{
struct kbtab *kbtab = input_get_drvdata(dev);
usb_kill_urb(kbtab->irq);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Josh Myer | 24 | 85.71% | 1 | 33.33% |
| Dmitry Torokhov | 3 | 10.71% | 1 | 33.33% |
| Borislav Petkov | 1 | 3.57% | 1 | 33.33% |
| Total | 28 | 100.00% | 3 | 100.00% |
static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
struct usb_endpoint_descriptor *endpoint;
struct kbtab *kbtab;
struct input_dev *input_dev;
int error = -ENOMEM;
if (intf->cur_altsetting->desc.bNumEndpoints < 1)
return -ENODEV;
kbtab = kzalloc(sizeof(struct kbtab), GFP_KERNEL);
input_dev = input_allocate_device();
if (!kbtab || !input_dev)
goto fail1;
kbtab->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &kbtab->data_dma);
if (!kbtab->data)
goto fail1;
kbtab->irq = usb_alloc_urb(0, GFP_KERNEL);
if (!kbtab->irq)
goto fail2;
kbtab->intf = intf;
kbtab->dev = input_dev;
usb_make_path(dev, kbtab->phys, sizeof(kbtab->phys));
strlcat(kbtab->phys, "/input0", sizeof(kbtab->phys));
input_dev->name = "KB Gear Tablet";
input_dev->phys = kbtab->phys;
usb_to_input_id(dev, &input_dev->id);
input_dev->dev.parent = &intf->dev;
input_set_drvdata(input_dev, kbtab);
input_dev->open = kbtab_open;
input_dev->close = kbtab_close;
input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
input_dev->keybit[BIT_WORD(BTN_LEFT)] |=
BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
input_dev->keybit[BIT_WORD(BTN_DIGI)] |=
BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_TOUCH);
input_set_abs_params(input_dev, ABS_X, 0, 0x2000, 4, 0);
input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0);
input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0);
endpoint = &intf->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(kbtab->irq, dev,
usb_rcvintpipe(dev, endpoint->bEndpointAddress),
kbtab->data, 8,
kbtab_irq, kbtab, endpoint->bInterval);
kbtab->irq->transfer_dma = kbtab->data_dma;
kbtab->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
error = input_register_device(kbtab->dev);
if (error)
goto fail3;
usb_set_intfdata(intf, kbtab);
return 0;
fail3: usb_free_urb(kbtab->irq);
fail2: usb_free_coherent(dev, 8, kbtab->data, kbtab->data_dma);
fail1: input_free_device(input_dev);
kfree(kbtab);
return error;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Josh Myer | 244 | 51.59% | 1 | 6.25% |
| Dmitry Torokhov | 190 | 40.17% | 6 | 37.50% |
| Johan Hovold | 16 | 3.38% | 1 | 6.25% |
| Greg Kroah-Hartman | 8 | 1.69% | 2 | 12.50% |
| Jiri Slaby | 8 | 1.69% | 1 | 6.25% |
| Alan Stern | 3 | 0.63% | 2 | 12.50% |
| Daniel Mack | 2 | 0.42% | 1 | 6.25% |
| Axel Lin | 1 | 0.21% | 1 | 6.25% |
| Oliver Neukum | 1 | 0.21% | 1 | 6.25% |
| Total | 473 | 100.00% | 16 | 100.00% |
static void kbtab_disconnect(struct usb_interface *intf)
{
struct kbtab *kbtab = usb_get_intfdata(intf);
struct usb_device *udev = interface_to_usbdev(intf);
usb_set_intfdata(intf, NULL);
input_unregister_device(kbtab->dev);
usb_free_urb(kbtab->irq);
usb_free_coherent(udev, 8, kbtab->data, kbtab->data_dma);
kfree(kbtab);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Josh Myer | 59 | 81.94% | 1 | 25.00% |
| Oliver Neukum | 11 | 15.28% | 1 | 25.00% |
| Daniel Mack | 1 | 1.39% | 1 | 25.00% |
| Axel Lin | 1 | 1.39% | 1 | 25.00% |
| Total | 72 | 100.00% | 4 | 100.00% |
static struct usb_driver kbtab_driver = {
.name = "kbtab",
.probe = kbtab_probe,
.disconnect = kbtab_disconnect,
.id_table = kbtab_ids,
};
module_usb_driver(kbtab_driver);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Josh Myer | 689 | 66.00% | 1 | 3.45% |
| Dmitry Torokhov | 228 | 21.84% | 8 | 27.59% |
| Greg Kroah-Hartman | 47 | 4.50% | 7 | 24.14% |
| Oliver Neukum | 26 | 2.49% | 2 | 6.90% |
| Johan Hovold | 16 | 1.53% | 1 | 3.45% |
| Trent Whaley | 15 | 1.44% | 1 | 3.45% |
| Jiri Slaby | 8 | 0.77% | 1 | 3.45% |
| Daniel Mack | 3 | 0.29% | 1 | 3.45% |
| Alan Stern | 3 | 0.29% | 2 | 6.90% |
| Harvey Harrison | 3 | 0.29% | 1 | 3.45% |
| Art Haas | 2 | 0.19% | 1 | 3.45% |
| Axel Lin | 2 | 0.19% | 1 | 3.45% |
| David Brownell | 1 | 0.10% | 1 | 3.45% |
| Borislav Petkov | 1 | 0.10% | 1 | 3.45% |
| Total | 1044 | 100.00% | 29 | 100.00% |
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