Initial import

1 files changed, 285 insertions, 0 deletions

diff --git a/drivers/hid/huiontablet.c b/drivers/hid/huiontablet.c
new file mode 100644
index 000000000..9996032e1
--- /dev/null
+++ b/drivers/hid/huiontablet.c
@@ -0,0 +1,285 @@
+/*
+ *  Copyright (c) 2013 Tan Huang,Shenzhen Huion 
+ *
+ *  USB HID Tablet support 
+ */
+
+
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/usb/input.h>
+#include <linux/hid.h>
+#include <asm/uaccess.h>
+#include <linux/platform_device.h>
+#include <linux/cdev.h>
+#include <linux/miscdevice.h>
+#define DEVICE_NAME "huiontablet"
+
+/* for apple IDs */
+#ifdef CONFIG_USB_HID_MODULE
+#include "./hid-ids.h"
+#endif
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v1.0"
+#define DRIVER_AUTHOR "Tan Huang <tanhuang@huion.cn>"
+#define DRIVER_DESC "USB HID Boot Protocol tablet driver"
+#define DRIVER_LICENSE "GPL"
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE(DRIVER_LICENSE);
+
+struct usb_mouse {
+	char name[128];
+	char phys[64];
+	struct usb_device *usbdev;
+	struct input_dev *dev;
+	struct urb *irq;
+
+	signed char *data;
+	dma_addr_t data_dma;
+};
+
+
+
+unsigned short int pos_x=0,pos_y=0,pos_z=0;
+
+//static struct miscdevice misc = {
+//	.minor		= MISC_DYNAMIC_MINOR,
+//	.name		= DEVICE_NAME,
+//	.fops		= &dev_fops,
+//};
+
+
+static void usb_mouse_irq(struct urb *urb)
+{
+	struct usb_mouse *mouse = urb->context;
+	signed char *data = mouse->data;
+	struct input_dev *dev = mouse->dev;
+	int status;
+        //unsigned short int pos_x=0,pos_y=0,pos_z=0;
+       // printk(KERN_NOTICE "enter usb_mouse_irq function\n");
+	switch (urb->status) {
+	case 0:			/* success */
+		break;
+	case -ECONNRESET:	/* unlink */
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+	/* -EPIPE:  should clear the halt */
+	default:		/* error */
+		goto resubmit;
+	}
+
+        pos_x =(data[3] & 0x0FF)<<8;
+        pos_x |=(data[2] & 0x0FF);
+        pos_y =(data[5] & 0x0FF)<<8;
+        pos_y |=(data[4] & 0x0FF);
+        pos_z =(data[7] & 0x0FF)<<8;
+        pos_z |=(data[6] & 0x0FF);
+        printk(KERN_NOTICE "pos_x=%x,pos_y=%x,pos_z=%x,button=%x\n",pos_x,pos_y,pos_z,(data[1] & 0x0F));
+        input_report_abs(dev, ABS_X, pos_x);
+        input_report_abs(dev, ABS_Y, pos_y);
+        input_report_key(dev, BTN_TOOL_PEN,1);
+        input_report_abs(dev, ABS_PRESSURE,pos_z);
+        input_report_key(dev, BTN_LEFT,data[1] & 0x01); 
+        input_report_key(dev, BTN_TOUCH,data[1] & 0x01);
+        input_report_key(dev, BTN_MIDDLE,data[1] & 0x02); 
+        input_report_key(dev, BTN_RIGHT,data[1] & 0x04); 
+
+	input_sync(dev);
+resubmit:
+	status = usb_submit_urb (urb, GFP_ATOMIC);
+	/*  Not sure what the function 'err' would have been, but holy shit this code is UGLY.
+		Do people really still use the goto statement?
+		if (status)
+			err ("can't resubmit intr, %s-%s/input0, status %d",
+					mouse->usbdev->bus->bus_name,
+					mouse->usbdev->devpath, status);
+   	    // printk(KERN_NOTICE "quit usb_mouse_irq function\n");
+	*/
+}
+
+static int usb_mouse_open(struct input_dev *dev)
+{
+	struct usb_mouse *mouse = input_get_drvdata(dev);
+     //   printk(KERN_NOTICE "enter usinput_report_key(dev, BTN_TOUCH,(pos_z>0)?1:0); b_mouse_open function\n");
+	mouse->irq->dev = mouse->usbdev;
+	if (usb_submit_urb(mouse->irq, GFP_KERNEL))
+		return -EIO;
+      //  printk(KERN_NOTICE "quit usb_mouse_open function\n");
+	return 0;
+}
+
+static void usb_mouse_close(struct input_dev *dev)
+{
+	struct usb_mouse *mouse = input_get_drvdata(dev);
+       // printk(KERN_NOTICE "enter usb_mouse_close function\n");
+	usb_kill_urb(mouse->irq);
+      //  printk(KERN_NOTICE "quit usb_mouse_close function\n");
+}
+
+static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	struct usb_device *dev = interface_to_usbdev(intf);
+	struct usb_host_interface *interface;
+	struct usb_endpoint_descriptor *endpoint;
+	struct usb_mouse *mouse;
+	struct input_dev *input_dev;
+	int pipe, maxp;
+	int error = -ENOMEM;
+       // printk(KERN_NOTICE "enter usb_mouse_probe function\n");
+	interface = intf->cur_altsetting;
+
+	if (interface->desc.bNumEndpoints != 1)
+		return -ENODEV;
+
+	endpoint = &interface->endpoint[0].desc;
+	if (!usb_endpoint_is_int_in(endpoint))
+		return -ENODEV;
+
+	pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
+	maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+
+	mouse = kzalloc(sizeof(struct usb_mouse), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!mouse || !input_dev)
+		goto fail1;
+
+	mouse->data = usb_alloc_coherent(dev, 8, GFP_ATOMIC, &mouse->data_dma);
+	if (!mouse->data)
+		goto fail1;
+
+	mouse->irq = usb_alloc_urb(0, GFP_KERNEL);
+	if (!mouse->irq)
+		goto fail2;
+
+	mouse->usbdev = dev;
+	mouse->dev = input_dev;
+
+	if (dev->manufacturer)
+		strlcpy(mouse->name, dev->manufacturer, sizeof(mouse->name));
+
+	if (dev->product) {
+		if (dev->manufacturer)
+			strlcat(mouse->name, " ", sizeof(mouse->name));
+		strlcat(mouse->name, dev->product, sizeof(mouse->name));
+	}
+
+	if (!strlen(mouse->name))
+		snprintf(mouse->name, sizeof(mouse->name),
+			 "USB HIDBP Mouse %04x:%04x",
+			 le16_to_cpu(dev->descriptor.idVendor),
+			 le16_to_cpu(dev->descriptor.idProduct));
+
+	usb_make_path(dev, mouse->phys, sizeof(mouse->phys));
+	strlcat(mouse->phys, "/input0", sizeof(mouse->phys));
+
+	input_dev->name = mouse->name;
+	input_dev->phys = mouse->phys;
+	usb_to_input_id(dev, &input_dev->id);
+	input_dev->dev.parent = &intf->dev;
+
+        set_bit(EV_MSC, input_dev->evbit);
+	set_bit(EV_KEY, input_dev->evbit);
+	set_bit(EV_ABS, input_dev->evbit);
+        set_bit(ABS_X, input_dev->absbit);
+        set_bit(ABS_Y, input_dev->absbit);
+        set_bit(ABS_PRESSURE, input_dev->absbit);
+	set_bit(BTN_TOUCH, input_dev->keybit);
+        set_bit(BTN_TOOL_PEN, input_dev->keybit);
+        set_bit(BTN_LEFT, input_dev->keybit);
+        set_bit(BTN_MIDDLE, input_dev->keybit);
+        set_bit(BTN_RIGHT, input_dev->keybit);
+        set_bit(MSC_SERIAL, input_dev->mscbit);
+       
+	input_set_drvdata(input_dev, mouse);
+
+        input_set_abs_params(input_dev, ABS_X, 0, 0x7ff, 0, 0);
+	input_set_abs_params(input_dev, ABS_Y, 0, 0x7ff, 0, 0);
+        input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1024, 0, 0);
+
+	input_dev->open = usb_mouse_open;
+	input_dev->close = usb_mouse_close;
+
+	usb_fill_int_urb(mouse->irq, dev, pipe, mouse->data,
+			 (maxp > 8 ? 8 : maxp),
+			 usb_mouse_irq, mouse, endpoint->bInterval);
+	mouse->irq->transfer_dma = mouse->data_dma;
+	mouse->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+	error = input_register_device(mouse->dev);
+	if (error)
+		goto fail3;
+
+	usb_set_intfdata(intf, mouse);
+	return 0;
+
+fail3:	
+	usb_free_urb(mouse->irq);
+fail2:	
+	usb_free_coherent(dev, 8, mouse->data, mouse->data_dma);
+fail1:	
+	input_free_device(input_dev);
+	kfree(mouse);
+      //  printk(KERN_NOTICE "quit usb_mouse_probe function\n");
+	return error;
+}
+
+static void usb_mouse_disconnect(struct usb_interface *intf)
+{
+	struct usb_mouse *mouse = usb_get_intfdata (intf);
+        //printk(KERN_NOTICE "enter usb_mouse_disconnect function\n");
+	usb_set_intfdata(intf, NULL);
+	if (mouse) {
+		usb_kill_urb(mouse->irq);
+		input_unregister_device(mouse->dev);
+		usb_free_urb(mouse->irq);
+		usb_free_coherent(interface_to_usbdev(intf), 8, mouse->data, mouse->data_dma);
+		kfree(mouse);
+	}
+ //       misc_deregister(&misc);
+       // printk(KERN_NOTICE "quit usb_mouse_disconnect function\n");
+}
+
+static struct usb_device_id usb_mouse_id_table [] = {
+	//{ USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,USB_INTERFACE_PROTOCOL_MOUSE) },
+        { USB_DEVICE(0x256C, 0x0005) },
+        { USB_DEVICE(0x256C, 0x006E) },
+        { USB_DEVICE(0x5543, 0x0005) },
+        { USB_DEVICE(0x5543, 0x006E) },
+	{ }	/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, usb_mouse_id_table);
+
+
+static struct usb_driver usb_mouse_driver = {
+	.name		= "usbmouse",
+	.probe		= usb_mouse_probe,
+	.disconnect	= usb_mouse_disconnect,
+	.id_table	= usb_mouse_id_table,
+};
+
+static int __init usb_mouse_init(void)
+{
+	int retval = usb_register(&usb_mouse_driver);
+	if (retval == 0)
+		printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+				DRIVER_DESC "\n");
+	return retval;
+}
+
+static void __exit usb_mouse_exit(void)
+{
+	usb_deregister(&usb_mouse_driver);
+}
+
+module_init(usb_mouse_init);
+module_exit(usb_mouse_exit);