patch-2.4.21 linux-2.4.21/drivers/usb/kbtab.c

• Lines: 180
• Date: 2003-06-13 07:51:36.000000000 -0700
• Orig file: linux-2.4.20/drivers/usb/kbtab.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/drivers/usb/kbtab.c linux-2.4.21/drivers/usb/kbtab.c
@@ -0,0 +1,179 @@
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v0.0.1"
+#define DRIVER_AUTHOR "Josh Myer <josh@joshisanerd.com>"
+#define DRIVER_DESC "KB Gear Jam Studio Tablet Driver"
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
+
+#define USB_VENDOR_ID_KBTAB 0x84e
+
+static int       kb_pressure_click = 0x10;
+MODULE_PARM     (kb_pressure_click,"i");
+MODULE_PARM_DESC(kb_pressure_click,
+		 "pressure threshold for clicks");
+
+struct kbtab {
+	signed char data[8];
+	struct input_dev dev;
+	struct usb_device *usbdev;
+	struct urb irq;
+	int open;
+	int x, y;
+	int button;
+	int pressure;
+};
+
+static void kbtab_irq(struct urb *urb)
+{
+
+	struct kbtab *tab = urb->context;
+	unsigned char *data = tab->data;
+	struct input_dev *dev = &tab->dev;
+
+	if(urb->status)
+		return;
+
+	tab->x = (data[2] << 8) + data[1];
+	tab->y = (data[4] << 8) + data[3];
+
+	tab->pressure = (data[5]);
+
+	/* XXX: don't report unless actual change */
+
+	input_report_abs(dev, ABS_X, tab->x);
+	input_report_abs(dev, ABS_Y, tab->y);
+	input_report_abs(dev, ABS_PRESSURE, tab->pressure);
+
+	input_report_key(dev, BTN_STYLUS, (data[0] & 2));
+	input_report_key(dev, BTN_TOUCH, (data[0] & 1));
+	input_report_key(dev, BTN_LEFT, (tab->pressure > kb_pressure_click) ? 1 : 0);
+
+	input_event(dev, EV_MSC, MSC_SERIAL, 0);
+}
+
+struct usb_device_id kbtab_ids[] = {
+	{ USB_DEVICE(USB_VENDOR_ID_KBTAB, 0x1001), driver_info : 0 },
+	{ }
+};
+  
+MODULE_DEVICE_TABLE(usb, kbtab_ids);
+
+static int kbtab_open(struct input_dev *dev)
+{
+	struct kbtab *kbtab = dev->private;
+
+	if(kbtab->open++)
+		return 0;
+
+	kbtab->irq.dev = kbtab->usbdev;
+	if(usb_submit_urb(&kbtab->irq))
+		return -EIO;
+
+	return 0;
+}
+
+static void kbtab_close(struct input_dev *dev)
+{
+	struct kbtab *kbtab = dev->private;
+
+	if(!--kbtab->open)
+		usb_unlink_urb(&kbtab->irq);
+}
+
+static void *kbtab_probe(struct usb_device *dev, unsigned int ifnum, const struct usb_device_id *id)
+{
+	struct usb_endpoint_descriptor *endpoint;
+	struct kbtab *kbtab;
+
+	if(!(kbtab = kmalloc(sizeof(struct kbtab), GFP_KERNEL)))
+		return NULL;
+
+	memset(kbtab, 0, sizeof(struct kbtab));
+
+	kbtab->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_MSC);
+	kbtab->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
+
+	kbtab->dev.keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
+	kbtab->dev.keybit[LONG(BTN_DIGI)] |= BIT(BTN_STYLUS);
+
+	kbtab->dev.mscbit[0] |= BIT(MSC_SERIAL);
+
+	kbtab->dev.absmax[ABS_X] = 0x2000;
+	kbtab->dev.absmax[ABS_Y] = 0x1750;
+
+	kbtab->dev.absmax[ABS_PRESSURE] = 0xff;
+  
+	kbtab->dev.absfuzz[ABS_X] = 4;
+	kbtab->dev.absfuzz[ABS_Y] = 4;
+  
+	kbtab->dev.private = kbtab;
+
+	kbtab->dev.open = kbtab_open;
+	kbtab->dev.close = kbtab_close;
+
+	kbtab->dev.name = "KB Gear Tablet";
+	kbtab->dev.idbus = BUS_USB;
+  
+	kbtab->dev.idvendor = dev->descriptor.idVendor;
+	kbtab->dev.idproduct = dev->descriptor.idProduct;
+	kbtab->dev.idversion = dev->descriptor.bcdDevice;
+	kbtab->usbdev = dev;
+
+
+	endpoint = dev->config[0].interface[ifnum].altsetting[0].endpoint + 0;
+
+	usb_set_idle(dev, dev->config[0].interface[ifnum].altsetting[0].bInterfaceNumber, 0, 0);
+
+	FILL_INT_URB(&kbtab->irq, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress),
+		     kbtab->data, 8, kbtab_irq, kbtab, endpoint->bInterval);
+
+	input_register_device(&kbtab->dev);
+
+	printk(KERN_INFO "input%d: KB Gear Tablet on usb%d:%d.%d\n",
+	       kbtab->dev.number, dev->bus->busnum, dev->devnum, ifnum);
+
+	return kbtab;
+
+}
+
+static void kbtab_disconnect(struct usb_device *dev, void *ptr)
+{
+	struct kbtab *kbtab = ptr;
+	usb_unlink_urb(&kbtab->irq);
+	input_unregister_device(&kbtab->dev);
+	kfree(kbtab);
+}
+
+static struct usb_driver kbtab_driver = {
+	name:		"kbtab",
+	probe:		kbtab_probe,
+	disconnect:	kbtab_disconnect,
+	id_table:	kbtab_ids,
+};
+
+static int __init kbtab_init(void)
+{
+	usb_register(&kbtab_driver);
+	info(DRIVER_VERSION " " DRIVER_AUTHOR);
+	info(DRIVER_DESC);
+	return 0;
+}
+
+static void __exit kbtab_exit(void)
+{
+	usb_deregister(&kbtab_driver);
+}
+
+module_init(kbtab_init);
+module_exit(kbtab_exit);