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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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#include <linux/types.h>#include <linux/kernel.h>#include <linux/slab.h>#include <linux/module.h>#include <linux/usb/input.h>
MODULE_AUTHOR("Xing Wei <weixing@hanwang.com.cn>");MODULE_DESCRIPTION("USB Hanwang tablet driver");MODULE_LICENSE("GPL");
#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, HANWANG_ART_MASTER_II,};
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 }, { 0x8503, "Hanwang Art Master II", HANWANG_ART_MASTER_II, ART_MASTER_PKGLEN_MAX, 0x27de, 0x1cfe, 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 p;
if (type == HANWANG_ART_MASTER_II) { hanwang->current_tool = BTN_TOOL_PEN; hanwang->current_id = STYLUS_DEVICE_ID; }
switch (data[0]) { case 0x02: /* data packet */ switch (data[1]) { case 0x80: /* tool prox out */ if (type != HANWANG_ART_MASTER_II) { hanwang->current_id = 0; input_report_key(input_dev, hanwang->current_tool, 0); } break;
case 0x00: /* artmaster ii pen leave */ if (type == HANWANG_ART_MASTER_II) { 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\n", data[0]); break; } break;
default: /* tool data packet */ switch (type) { case HANWANG_ART_MASTER_III: p = (data[6] << 3) | ((data[7] & 0xc0) >> 5) | (data[1] & 0x01); break;
case HANWANG_ART_MASTER_HD: case HANWANG_ART_MASTER_II: p = (data[7] >> 6) | (data[6] << 2); break;
default: p = 0; break; }
input_report_abs(input_dev, ABS_X, be16_to_cpup((__be16 *)&data[2])); input_report_abs(input_dev, ABS_Y, be16_to_cpup((__be16 *)&data[4])); input_report_abs(input_dev, ABS_PRESSURE, 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);
if (type != HANWANG_ART_MASTER_II) input_report_key(input_dev, BTN_STYLUS2, data[1] & 0x04); else input_report_key(input_dev, BTN_TOOL_PEN, 1);
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;
case HANWANG_ART_MASTER_II: dev_dbg(&dev->dev, "error packet %02x\n", data[0]); return; }
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\n", 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;
if (intf->cur_altsetting->desc.bNumEndpoints < 1) return -ENODEV;
hanwang = kzalloc_obj(*hanwang); 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));
strscpy(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);