- 根目录:
- drivers
- input
- tablet
- hanwang.c
/*
* USB Hanwang tablet support
*
* Copyright (c) 2010 Xing Wei <weixing@hanwang.com.cn>
*
*/
/*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb/input.h>
#define DRIVER_AUTHOR "Xing Wei <weixing@hanwang.com.cn>"
#define DRIVER_DESC "USB Hanwang tablet driver"
#define DRIVER_LICENSE "GPL"
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
#define USB_VENDOR_ID_HANWANG 0x0b57
#define HANWANG_TABLET_INT_CLASS 0x0003
#define HANWANG_TABLET_INT_SUB_CLASS 0x0001
#define HANWANG_TABLET_INT_PROTOCOL 0x0002
#define ART_MASTER_PKGLEN_MAX 10
/* device IDs */
#define STYLUS_DEVICE_ID 0x02
#define TOUCH_DEVICE_ID 0x03
#define CURSOR_DEVICE_ID 0x06
#define ERASER_DEVICE_ID 0x0A
#define PAD_DEVICE_ID 0x0F
/* match vendor and interface info */
#define HANWANG_TABLET_DEVICE(vend, cl, sc, pr) \
.match_flags = USB_DEVICE_ID_MATCH_VENDOR \
| USB_DEVICE_ID_MATCH_INT_INFO, \
.idVendor = (vend), \
.bInterfaceClass = (cl), \
.bInterfaceSubClass = (sc), \
.bInterfaceProtocol = (pr)
enum hanwang_tablet_type {
HANWANG_ART_MASTER_III,
HANWANG_ART_MASTER_HD,
};
struct hanwang {
unsigned char *data;
dma_addr_t data_dma;
struct input_dev *dev;
struct usb_device *usbdev;
struct urb *irq;
const struct hanwang_features *features;
unsigned int current_tool;
unsigned int current_id;
char name[64];
char phys[32];
};
struct hanwang_features {
unsigned short pid;
char *name;
enum hanwang_tablet_type type;
int pkg_len;
int max_x;
int max_y;
int max_tilt_x;
int max_tilt_y;
int max_pressure;
};
static const struct hanwang_features features_array[] = {
{ 0x8528, "Hanwang Art Master III 0906", HANWANG_ART_MASTER_III,
ART_MASTER_PKGLEN_MAX, 0x5757, 0x3692, 0x3f, 0x7f, 2048 },
{ 0x8529, "Hanwang Art Master III 0604", HANWANG_ART_MASTER_III,
ART_MASTER_PKGLEN_MAX, 0x3d84, 0x2672, 0x3f, 0x7f, 2048 },
{ 0x852a, "Hanwang Art Master III 1308", HANWANG_ART_MASTER_III,
ART_MASTER_PKGLEN_MAX, 0x7f00, 0x4f60, 0x3f, 0x7f, 2048 },
{ 0x8401, "Hanwang Art Master HD 5012", HANWANG_ART_MASTER_HD,
ART_MASTER_PKGLEN_MAX, 0x678e, 0x4150, 0x3f, 0x7f, 1024 },
};
static const int hw_eventtypes[] = {
EV_KEY, EV_ABS, EV_MSC,
};
static const int hw_absevents[] = {
ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL,
ABS_RX, ABS_RY, ABS_PRESSURE, ABS_MISC,
};
static const int hw_btnevents[] = {
BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER,
BTN_TOOL_MOUSE, BTN_TOOL_FINGER,
BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8,
};
static const int hw_mscevents[] = {
MSC_SERIAL,
};
static void hanwang_parse_packet(struct hanwang *hanwang)
{
unsigned char *data = hanwang->data;
struct input_dev *input_dev = hanwang->dev;
struct usb_device *dev = hanwang->usbdev;
enum hanwang_tablet_type type = hanwang->features->type;
int i;
u16 x, y, p;
switch (data[0]) {
case 0x02: /* data packet */
switch (data[1]) {
case 0x80: /* tool prox out */
hanwang->current_id = 0;
input_report_key(input_dev, hanwang->current_tool, 0);
break;
case 0xc2: /* first time tool prox in */
switch (data[3] & 0xf0) {
case 0x20: /* art_master III */
case 0x30: /* art_master_HD */
hanwang->current_id = STYLUS_DEVICE_ID;
hanwang->current_tool = BTN_TOOL_PEN;
input_report_key(input_dev, BTN_TOOL_PEN, 1);
break;
case 0xa0: /* art_master III */
case 0xb0: /* art_master_HD */
hanwang->current_id = ERASER_DEVICE_ID;
hanwang->current_tool = BTN_TOOL_RUBBER;
input_report_key(input_dev, BTN_TOOL_RUBBER, 1);
break;
default:
hanwang->current_id = 0;
dev_dbg(&dev->dev,
"unknown tablet tool %02x ", data[0]);
break;
}
break;
default: /* tool data packet */
x = (data[2] << 8) | data[3];
y = (data[4] << 8) | data[5];
switch (type) {
case HANWANG_ART_MASTER_III:
p = (data[6] << 3) |
((data[7] & 0xc0) >> 5) |
(data[1] & 0x01);
break;
case HANWANG_ART_MASTER_HD:
p = (data[7] >> 6) | (data[6] << 2);
break;
default:
p = 0;
break;
}
input_report_abs(input_dev, ABS_X,
le16_to_cpup((__le16 *)&x));
input_report_abs(input_dev, ABS_Y,
le16_to_cpup((__le16 *)&y));
input_report_abs(input_dev, ABS_PRESSURE,
le16_to_cpup((__le16 *)&p));
input_report_abs(input_dev, ABS_TILT_X, data[7] & 0x3f);
input_report_abs(input_dev, ABS_TILT_Y, data[8] & 0x7f);
input_report_key(input_dev, BTN_STYLUS, data[1] & 0x02);
input_report_key(input_dev, BTN_STYLUS2, data[1] & 0x04);
break;
}
input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
input_event(input_dev, EV_MSC, MSC_SERIAL,
hanwang->features->pid);
break;
case 0x0c:
/* roll wheel */
hanwang->current_id = PAD_DEVICE_ID;
switch (type) {
case HANWANG_ART_MASTER_III:
input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
data[2] || data[3]);
input_report_abs(input_dev, ABS_WHEEL, data[1]);
input_report_key(input_dev, BTN_0, data[2]);
for (i = 0; i < 8; i++)
input_report_key(input_dev,
BTN_1 + i, data[3] & (1 << i));
break;
case HANWANG_ART_MASTER_HD:
input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
data[2] || data[3] || data[4] ||
data[5] || data[6]);
input_report_abs(input_dev, ABS_RX,
((data[1] & 0x1f) << 8) | data[2]);
input_report_abs(input_dev, ABS_RY,
((data[3] & 0x1f) << 8) | data[4]);
input_report_key(input_dev, BTN_0, data[5] & 0x01);
for (i = 0; i < 4; i++) {
input_report_key(input_dev,
BTN_1 + i, data[5] & (1 << i));
input_report_key(input_dev,
BTN_5 + i, data[6] & (1 << i));
}
break;
}
input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff);
break;
default:
dev_dbg(&dev->dev, "error packet %02x ", data[0]);
break;
}
input_sync(input_dev);
}
static void hanwang_irq(struct urb *urb)
{
struct hanwang *hanwang = urb->context;
struct usb_device *dev = hanwang->usbdev;
int retval;
switch (urb->status) {
case 0:
/* success */;
hanwang_parse_packet(hanwang);
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dev_err(&dev->dev, "%s - urb shutting down with status: %d",
__func__, urb->status);
return;
default:
dev_err(&dev->dev, "%s - nonzero urb status received: %d",
__func__, urb->status);
break;
}
retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
dev_err(&dev->dev, "%s - usb_submit_urb failed with result %d",
__func__, retval);
}
static int hanwang_open(struct input_dev *dev)
{
struct hanwang *hanwang = input_get_drvdata(dev);
hanwang->irq->dev = hanwang->usbdev;
if (usb_submit_urb(hanwang->irq, GFP_KERNEL))
return -EIO;
return 0;
}
static void hanwang_close(struct input_dev *dev)
{
struct hanwang *hanwang = input_get_drvdata(dev);
usb_kill_urb(hanwang->irq);
}
static bool get_features(struct usb_device *dev, struct hanwang *hanwang)
{
int i;
for (i = 0; i < ARRAY_SIZE(features_array); i++) {
if (le16_to_cpu(dev->descriptor.idProduct) ==
features_array[i].pid) {
hanwang->features = &features_array[i];
return true;
}
}
return false;
}
static int hanwang_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 hanwang *hanwang;
struct input_dev *input_dev;
int error;
int i;
hanwang = kzalloc(sizeof(struct hanwang), GFP_KERNEL);
input_dev = input_allocate_device();
if (!hanwang || !input_dev) {
error = -ENOMEM;
goto fail1;
}
if (!get_features(dev, hanwang)) {
error = -ENXIO;
goto fail1;
}
hanwang->data = usb_alloc_coherent(dev, hanwang->features->pkg_len,
GFP_KERNEL, &hanwang->data_dma);
if (!hanwang->data) {
error = -ENOMEM;
goto fail1;
}
hanwang->irq = usb_alloc_urb(0, GFP_KERNEL);
if (!hanwang->irq) {
error = -ENOMEM;
goto fail2;
}
hanwang->usbdev = dev;
hanwang->dev = input_dev;
usb_make_path(dev, hanwang->phys, sizeof(hanwang->phys));
strlcat(hanwang->phys, "/input0", sizeof(hanwang->phys));
strlcpy(hanwang->name, hanwang->features->name, sizeof(hanwang->name));
input_dev->name = hanwang->name;
input_dev->phys = hanwang->phys;
usb_to_input_id(dev, &input_dev->id);
input_dev->dev.parent = &intf->dev;
input_set_drvdata(input_dev, hanwang);
input_dev->open = hanwang_open;
input_dev->close = hanwang_close;
for (i = 0; i < ARRAY_SIZE(hw_eventtypes); ++i)
__set_bit(hw_eventtypes[i], input_dev->evbit);
for (i = 0; i < ARRAY_SIZE(hw_absevents); ++i)
__set_bit(hw_absevents[i], input_dev->absbit);
for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i)
__set_bit(hw_btnevents[i], input_dev->keybit);
for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i)
__set_bit(hw_mscevents[i], input_dev->mscbit);
input_set_abs_params(input_dev, ABS_X,
0, hanwang->features->max_x, 4, 0);
input_set_abs_params(input_dev, ABS_Y,
0, hanwang->features->max_y, 4, 0);
input_set_abs_params(input_dev, ABS_TILT_X,
0, hanwang->features->max_tilt_x, 0, 0);
input_set_abs_params(input_dev, ABS_TILT_Y,
0, hanwang->features->max_tilt_y, 0, 0);
input_set_abs_params(input_dev, ABS_PRESSURE,
0, hanwang->features->max_pressure, 0, 0);
endpoint = &intf->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(hanwang->irq, dev,
usb_rcvintpipe(dev, endpoint->bEndpointAddress),
hanwang->data, hanwang->features->pkg_len,
hanwang_irq, hanwang, endpoint->bInterval);
hanwang->irq->transfer_dma = hanwang->data_dma;
hanwang->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
error = input_register_device(hanwang->dev);
if (error)
goto fail3;
usb_set_intfdata(intf, hanwang);
return 0;
fail3: usb_free_urb(hanwang->irq);
fail2: usb_free_coherent(dev, hanwang->features->pkg_len,
hanwang->data, hanwang->data_dma);
fail1: input_free_device(input_dev);
kfree(hanwang);
return error;
}
static void hanwang_disconnect(struct usb_interface *intf)
{
struct hanwang *hanwang = usb_get_intfdata(intf);
input_unregister_device(hanwang->dev);
usb_free_urb(hanwang->irq);
usb_free_coherent(interface_to_usbdev(intf),
hanwang->features->pkg_len, hanwang->data,
hanwang->data_dma);
kfree(hanwang);
usb_set_intfdata(intf, NULL);
}
static const struct usb_device_id hanwang_ids[] = {
{ HANWANG_TABLET_DEVICE(USB_VENDOR_ID_HANWANG, HANWANG_TABLET_INT_CLASS,
HANWANG_TABLET_INT_SUB_CLASS, HANWANG_TABLET_INT_PROTOCOL) },
{}
};
MODULE_DEVICE_TABLE(usb, hanwang_ids);
static struct usb_driver hanwang_driver = {
.name = "hanwang",
.probe = hanwang_probe,
.disconnect = hanwang_disconnect,
.id_table = hanwang_ids,
};
module_usb_driver(hanwang_driver);