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![Julia Lawall](/assets/img/avatar_default.png)
Inline macro for MODULE_LICENSE to make the license information easy to find, eg with grep. Inline the other module-related macros at the same time. A simplified version of the semantic patch for the MODULE_LICENSE case is as follows: (http://coccinelle.lip6.fr/) // <smpl> @s@ identifier i; expression e; @@ @@ declarer name MODULE_LICENSE; identifier s.i; expression s.e; @@ MODULE_LICENSE( - i + e ); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> [dtor: added a couple of drivers missed by the script, removed a few unused DRIVER_VERSION macros] Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
201 lines
4.9 KiB
C
201 lines
4.9 KiB
C
#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/usb/input.h>
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#include <asm/unaligned.h>
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/*
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* Pressure-threshold modules param code from Alex Perry <alex.perry@ieee.org>
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*/
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MODULE_AUTHOR("Josh Myer <josh@joshisanerd.com>");
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MODULE_DESCRIPTION("USB KB Gear JamStudio Tablet driver");
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MODULE_LICENSE("GPL");
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#define USB_VENDOR_ID_KBGEAR 0x084e
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static int kb_pressure_click = 0x10;
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module_param(kb_pressure_click, int, 0);
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MODULE_PARM_DESC(kb_pressure_click, "pressure threshold for clicks");
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struct kbtab {
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unsigned char *data;
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dma_addr_t data_dma;
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struct input_dev *dev;
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struct usb_interface *intf;
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struct urb *irq;
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char phys[32];
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};
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static void kbtab_irq(struct urb *urb)
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{
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struct kbtab *kbtab = urb->context;
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unsigned char *data = kbtab->data;
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struct input_dev *dev = kbtab->dev;
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int pressure;
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int retval;
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switch (urb->status) {
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case 0:
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/* success */
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break;
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case -ECONNRESET:
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case -ENOENT:
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case -ESHUTDOWN:
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/* this urb is terminated, clean up */
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dev_dbg(&kbtab->intf->dev,
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"%s - urb shutting down with status: %d\n",
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__func__, urb->status);
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return;
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default:
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dev_dbg(&kbtab->intf->dev,
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"%s - nonzero urb status received: %d\n",
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__func__, urb->status);
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goto exit;
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}
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input_report_key(dev, BTN_TOOL_PEN, 1);
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input_report_abs(dev, ABS_X, get_unaligned_le16(&data[1]));
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input_report_abs(dev, ABS_Y, get_unaligned_le16(&data[3]));
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/*input_report_key(dev, BTN_TOUCH , data[0] & 0x01);*/
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input_report_key(dev, BTN_RIGHT, data[0] & 0x02);
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pressure = data[5];
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if (kb_pressure_click == -1)
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input_report_abs(dev, ABS_PRESSURE, pressure);
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else
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input_report_key(dev, BTN_LEFT, pressure > kb_pressure_click ? 1 : 0);
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input_sync(dev);
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exit:
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retval = usb_submit_urb(urb, GFP_ATOMIC);
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if (retval)
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dev_err(&kbtab->intf->dev,
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"%s - usb_submit_urb failed with result %d\n",
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__func__, retval);
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}
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static const struct usb_device_id kbtab_ids[] = {
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{ USB_DEVICE(USB_VENDOR_ID_KBGEAR, 0x1001), .driver_info = 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(usb, kbtab_ids);
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static int kbtab_open(struct input_dev *dev)
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{
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struct kbtab *kbtab = input_get_drvdata(dev);
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struct usb_device *udev = interface_to_usbdev(kbtab->intf);
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kbtab->irq->dev = udev;
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if (usb_submit_urb(kbtab->irq, GFP_KERNEL))
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return -EIO;
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return 0;
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}
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static void kbtab_close(struct input_dev *dev)
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{
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struct kbtab *kbtab = input_get_drvdata(dev);
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usb_kill_urb(kbtab->irq);
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}
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static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *id)
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{
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struct usb_device *dev = interface_to_usbdev(intf);
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struct usb_endpoint_descriptor *endpoint;
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struct kbtab *kbtab;
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struct input_dev *input_dev;
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int error = -ENOMEM;
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if (intf->cur_altsetting->desc.bNumEndpoints < 1)
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return -ENODEV;
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kbtab = kzalloc(sizeof(struct kbtab), GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!kbtab || !input_dev)
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goto fail1;
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kbtab->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &kbtab->data_dma);
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if (!kbtab->data)
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goto fail1;
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kbtab->irq = usb_alloc_urb(0, GFP_KERNEL);
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if (!kbtab->irq)
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goto fail2;
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kbtab->intf = intf;
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kbtab->dev = input_dev;
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usb_make_path(dev, kbtab->phys, sizeof(kbtab->phys));
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strlcat(kbtab->phys, "/input0", sizeof(kbtab->phys));
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input_dev->name = "KB Gear Tablet";
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input_dev->phys = kbtab->phys;
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usb_to_input_id(dev, &input_dev->id);
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input_dev->dev.parent = &intf->dev;
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input_set_drvdata(input_dev, kbtab);
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input_dev->open = kbtab_open;
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input_dev->close = kbtab_close;
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input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
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input_dev->keybit[BIT_WORD(BTN_LEFT)] |=
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BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
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input_dev->keybit[BIT_WORD(BTN_DIGI)] |=
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BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_TOUCH);
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input_set_abs_params(input_dev, ABS_X, 0, 0x2000, 4, 0);
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input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0);
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input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0);
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endpoint = &intf->cur_altsetting->endpoint[0].desc;
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usb_fill_int_urb(kbtab->irq, dev,
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usb_rcvintpipe(dev, endpoint->bEndpointAddress),
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kbtab->data, 8,
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kbtab_irq, kbtab, endpoint->bInterval);
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kbtab->irq->transfer_dma = kbtab->data_dma;
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kbtab->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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error = input_register_device(kbtab->dev);
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if (error)
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goto fail3;
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usb_set_intfdata(intf, kbtab);
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return 0;
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fail3: usb_free_urb(kbtab->irq);
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fail2: usb_free_coherent(dev, 8, kbtab->data, kbtab->data_dma);
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fail1: input_free_device(input_dev);
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kfree(kbtab);
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return error;
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}
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static void kbtab_disconnect(struct usb_interface *intf)
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{
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struct kbtab *kbtab = usb_get_intfdata(intf);
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struct usb_device *udev = interface_to_usbdev(intf);
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usb_set_intfdata(intf, NULL);
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input_unregister_device(kbtab->dev);
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usb_free_urb(kbtab->irq);
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usb_free_coherent(udev, 8, kbtab->data, kbtab->data_dma);
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kfree(kbtab);
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}
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static struct usb_driver kbtab_driver = {
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.name = "kbtab",
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.probe = kbtab_probe,
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.disconnect = kbtab_disconnect,
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.id_table = kbtab_ids,
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};
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module_usb_driver(kbtab_driver);
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