444 строки
11 KiB
C
444 строки
11 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* USB Hanwang tablet support
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*
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* Copyright (c) 2010 Xing Wei <weixing@hanwang.com.cn>
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*/
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#include <linux/types.h>
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#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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MODULE_AUTHOR("Xing Wei <weixing@hanwang.com.cn>");
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MODULE_DESCRIPTION("USB Hanwang tablet driver");
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MODULE_LICENSE("GPL");
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#define USB_VENDOR_ID_HANWANG 0x0b57
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#define HANWANG_TABLET_INT_CLASS 0x0003
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#define HANWANG_TABLET_INT_SUB_CLASS 0x0001
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#define HANWANG_TABLET_INT_PROTOCOL 0x0002
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#define ART_MASTER_PKGLEN_MAX 10
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/* device IDs */
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#define STYLUS_DEVICE_ID 0x02
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#define TOUCH_DEVICE_ID 0x03
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#define CURSOR_DEVICE_ID 0x06
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#define ERASER_DEVICE_ID 0x0A
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#define PAD_DEVICE_ID 0x0F
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/* match vendor and interface info */
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#define HANWANG_TABLET_DEVICE(vend, cl, sc, pr) \
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.match_flags = USB_DEVICE_ID_MATCH_VENDOR \
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| USB_DEVICE_ID_MATCH_INT_INFO, \
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.idVendor = (vend), \
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.bInterfaceClass = (cl), \
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.bInterfaceSubClass = (sc), \
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.bInterfaceProtocol = (pr)
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enum hanwang_tablet_type {
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HANWANG_ART_MASTER_III,
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HANWANG_ART_MASTER_HD,
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HANWANG_ART_MASTER_II,
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};
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struct hanwang {
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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_device *usbdev;
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struct urb *irq;
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const struct hanwang_features *features;
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unsigned int current_tool;
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unsigned int current_id;
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char name[64];
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char phys[32];
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};
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struct hanwang_features {
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unsigned short pid;
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char *name;
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enum hanwang_tablet_type type;
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int pkg_len;
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int max_x;
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int max_y;
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int max_tilt_x;
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int max_tilt_y;
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int max_pressure;
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};
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static const struct hanwang_features features_array[] = {
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{ 0x8528, "Hanwang Art Master III 0906", HANWANG_ART_MASTER_III,
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ART_MASTER_PKGLEN_MAX, 0x5757, 0x3692, 0x3f, 0x7f, 2048 },
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{ 0x8529, "Hanwang Art Master III 0604", HANWANG_ART_MASTER_III,
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ART_MASTER_PKGLEN_MAX, 0x3d84, 0x2672, 0x3f, 0x7f, 2048 },
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{ 0x852a, "Hanwang Art Master III 1308", HANWANG_ART_MASTER_III,
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ART_MASTER_PKGLEN_MAX, 0x7f00, 0x4f60, 0x3f, 0x7f, 2048 },
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{ 0x8401, "Hanwang Art Master HD 5012", HANWANG_ART_MASTER_HD,
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ART_MASTER_PKGLEN_MAX, 0x678e, 0x4150, 0x3f, 0x7f, 1024 },
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{ 0x8503, "Hanwang Art Master II", HANWANG_ART_MASTER_II,
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ART_MASTER_PKGLEN_MAX, 0x27de, 0x1cfe, 0x3f, 0x7f, 1024 },
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};
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static const int hw_eventtypes[] = {
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EV_KEY, EV_ABS, EV_MSC,
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};
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static const int hw_absevents[] = {
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ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL,
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ABS_RX, ABS_RY, ABS_PRESSURE, ABS_MISC,
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};
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static const int hw_btnevents[] = {
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BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER,
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BTN_TOOL_MOUSE, BTN_TOOL_FINGER,
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BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8,
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};
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static const int hw_mscevents[] = {
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MSC_SERIAL,
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};
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static void hanwang_parse_packet(struct hanwang *hanwang)
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{
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unsigned char *data = hanwang->data;
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struct input_dev *input_dev = hanwang->dev;
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struct usb_device *dev = hanwang->usbdev;
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enum hanwang_tablet_type type = hanwang->features->type;
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int i;
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u16 p;
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if (type == HANWANG_ART_MASTER_II) {
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hanwang->current_tool = BTN_TOOL_PEN;
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hanwang->current_id = STYLUS_DEVICE_ID;
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}
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switch (data[0]) {
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case 0x02: /* data packet */
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switch (data[1]) {
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case 0x80: /* tool prox out */
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if (type != HANWANG_ART_MASTER_II) {
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hanwang->current_id = 0;
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input_report_key(input_dev,
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hanwang->current_tool, 0);
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}
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break;
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case 0x00: /* artmaster ii pen leave */
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if (type == HANWANG_ART_MASTER_II) {
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hanwang->current_id = 0;
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input_report_key(input_dev,
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hanwang->current_tool, 0);
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}
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break;
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case 0xc2: /* first time tool prox in */
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switch (data[3] & 0xf0) {
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case 0x20: /* art_master III */
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case 0x30: /* art_master_HD */
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hanwang->current_id = STYLUS_DEVICE_ID;
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hanwang->current_tool = BTN_TOOL_PEN;
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input_report_key(input_dev, BTN_TOOL_PEN, 1);
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break;
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case 0xa0: /* art_master III */
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case 0xb0: /* art_master_HD */
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hanwang->current_id = ERASER_DEVICE_ID;
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hanwang->current_tool = BTN_TOOL_RUBBER;
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input_report_key(input_dev, BTN_TOOL_RUBBER, 1);
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break;
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default:
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hanwang->current_id = 0;
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dev_dbg(&dev->dev,
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"unknown tablet tool %02x\n", data[0]);
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break;
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}
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break;
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default: /* tool data packet */
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switch (type) {
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case HANWANG_ART_MASTER_III:
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p = (data[6] << 3) |
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((data[7] & 0xc0) >> 5) |
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(data[1] & 0x01);
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break;
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case HANWANG_ART_MASTER_HD:
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case HANWANG_ART_MASTER_II:
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p = (data[7] >> 6) | (data[6] << 2);
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break;
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default:
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p = 0;
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break;
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}
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input_report_abs(input_dev, ABS_X,
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be16_to_cpup((__be16 *)&data[2]));
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input_report_abs(input_dev, ABS_Y,
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be16_to_cpup((__be16 *)&data[4]));
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input_report_abs(input_dev, ABS_PRESSURE, p);
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input_report_abs(input_dev, ABS_TILT_X, data[7] & 0x3f);
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input_report_abs(input_dev, ABS_TILT_Y, data[8] & 0x7f);
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input_report_key(input_dev, BTN_STYLUS, data[1] & 0x02);
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if (type != HANWANG_ART_MASTER_II)
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input_report_key(input_dev, BTN_STYLUS2,
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data[1] & 0x04);
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else
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input_report_key(input_dev, BTN_TOOL_PEN, 1);
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break;
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}
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input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
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input_event(input_dev, EV_MSC, MSC_SERIAL,
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hanwang->features->pid);
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break;
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case 0x0c:
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/* roll wheel */
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hanwang->current_id = PAD_DEVICE_ID;
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switch (type) {
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case HANWANG_ART_MASTER_III:
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input_report_key(input_dev, BTN_TOOL_FINGER,
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data[1] || data[2] || data[3]);
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input_report_abs(input_dev, ABS_WHEEL, data[1]);
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input_report_key(input_dev, BTN_0, data[2]);
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for (i = 0; i < 8; i++)
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input_report_key(input_dev,
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BTN_1 + i, data[3] & (1 << i));
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break;
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case HANWANG_ART_MASTER_HD:
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input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
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data[2] || data[3] || data[4] ||
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data[5] || data[6]);
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input_report_abs(input_dev, ABS_RX,
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((data[1] & 0x1f) << 8) | data[2]);
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input_report_abs(input_dev, ABS_RY,
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((data[3] & 0x1f) << 8) | data[4]);
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input_report_key(input_dev, BTN_0, data[5] & 0x01);
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for (i = 0; i < 4; i++) {
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input_report_key(input_dev,
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BTN_1 + i, data[5] & (1 << i));
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input_report_key(input_dev,
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BTN_5 + i, data[6] & (1 << i));
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}
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break;
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case HANWANG_ART_MASTER_II:
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dev_dbg(&dev->dev, "error packet %02x\n", data[0]);
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return;
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}
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input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
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input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff);
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break;
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default:
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dev_dbg(&dev->dev, "error packet %02x\n", data[0]);
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break;
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}
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input_sync(input_dev);
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}
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static void hanwang_irq(struct urb *urb)
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{
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struct hanwang *hanwang = urb->context;
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struct usb_device *dev = hanwang->usbdev;
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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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hanwang_parse_packet(hanwang);
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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_err(&dev->dev, "%s - urb shutting down with status: %d",
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__func__, urb->status);
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return;
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default:
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dev_err(&dev->dev, "%s - nonzero urb status received: %d",
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__func__, urb->status);
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break;
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}
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retval = usb_submit_urb(urb, GFP_ATOMIC);
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if (retval)
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dev_err(&dev->dev, "%s - usb_submit_urb failed with result %d",
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__func__, retval);
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}
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static int hanwang_open(struct input_dev *dev)
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{
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struct hanwang *hanwang = input_get_drvdata(dev);
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hanwang->irq->dev = hanwang->usbdev;
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if (usb_submit_urb(hanwang->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 hanwang_close(struct input_dev *dev)
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{
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struct hanwang *hanwang = input_get_drvdata(dev);
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usb_kill_urb(hanwang->irq);
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}
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static bool get_features(struct usb_device *dev, struct hanwang *hanwang)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(features_array); i++) {
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if (le16_to_cpu(dev->descriptor.idProduct) ==
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features_array[i].pid) {
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hanwang->features = &features_array[i];
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return true;
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}
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}
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return false;
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}
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static int hanwang_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 hanwang *hanwang;
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struct input_dev *input_dev;
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int error;
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int i;
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if (intf->cur_altsetting->desc.bNumEndpoints < 1)
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return -ENODEV;
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hanwang = kzalloc(sizeof(struct hanwang), GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!hanwang || !input_dev) {
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error = -ENOMEM;
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goto fail1;
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}
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if (!get_features(dev, hanwang)) {
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error = -ENXIO;
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goto fail1;
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}
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hanwang->data = usb_alloc_coherent(dev, hanwang->features->pkg_len,
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GFP_KERNEL, &hanwang->data_dma);
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if (!hanwang->data) {
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error = -ENOMEM;
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goto fail1;
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}
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hanwang->irq = usb_alloc_urb(0, GFP_KERNEL);
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if (!hanwang->irq) {
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error = -ENOMEM;
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goto fail2;
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}
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hanwang->usbdev = dev;
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hanwang->dev = input_dev;
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usb_make_path(dev, hanwang->phys, sizeof(hanwang->phys));
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strlcat(hanwang->phys, "/input0", sizeof(hanwang->phys));
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strscpy(hanwang->name, hanwang->features->name, sizeof(hanwang->name));
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input_dev->name = hanwang->name;
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input_dev->phys = hanwang->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, hanwang);
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input_dev->open = hanwang_open;
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input_dev->close = hanwang_close;
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for (i = 0; i < ARRAY_SIZE(hw_eventtypes); ++i)
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__set_bit(hw_eventtypes[i], input_dev->evbit);
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for (i = 0; i < ARRAY_SIZE(hw_absevents); ++i)
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__set_bit(hw_absevents[i], input_dev->absbit);
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for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i)
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__set_bit(hw_btnevents[i], input_dev->keybit);
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for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i)
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__set_bit(hw_mscevents[i], input_dev->mscbit);
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input_set_abs_params(input_dev, ABS_X,
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0, hanwang->features->max_x, 4, 0);
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input_set_abs_params(input_dev, ABS_Y,
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0, hanwang->features->max_y, 4, 0);
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input_set_abs_params(input_dev, ABS_TILT_X,
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0, hanwang->features->max_tilt_x, 0, 0);
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input_set_abs_params(input_dev, ABS_TILT_Y,
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0, hanwang->features->max_tilt_y, 0, 0);
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input_set_abs_params(input_dev, ABS_PRESSURE,
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0, hanwang->features->max_pressure, 0, 0);
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endpoint = &intf->cur_altsetting->endpoint[0].desc;
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usb_fill_int_urb(hanwang->irq, dev,
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usb_rcvintpipe(dev, endpoint->bEndpointAddress),
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hanwang->data, hanwang->features->pkg_len,
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hanwang_irq, hanwang, endpoint->bInterval);
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hanwang->irq->transfer_dma = hanwang->data_dma;
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hanwang->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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error = input_register_device(hanwang->dev);
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if (error)
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goto fail3;
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usb_set_intfdata(intf, hanwang);
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return 0;
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fail3: usb_free_urb(hanwang->irq);
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fail2: usb_free_coherent(dev, hanwang->features->pkg_len,
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hanwang->data, hanwang->data_dma);
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fail1: input_free_device(input_dev);
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kfree(hanwang);
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return error;
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}
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static void hanwang_disconnect(struct usb_interface *intf)
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{
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struct hanwang *hanwang = usb_get_intfdata(intf);
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input_unregister_device(hanwang->dev);
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usb_free_urb(hanwang->irq);
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usb_free_coherent(interface_to_usbdev(intf),
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hanwang->features->pkg_len, hanwang->data,
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hanwang->data_dma);
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kfree(hanwang);
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usb_set_intfdata(intf, NULL);
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}
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static const struct usb_device_id hanwang_ids[] = {
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{ HANWANG_TABLET_DEVICE(USB_VENDOR_ID_HANWANG, HANWANG_TABLET_INT_CLASS,
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HANWANG_TABLET_INT_SUB_CLASS, HANWANG_TABLET_INT_PROTOCOL) },
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{}
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};
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MODULE_DEVICE_TABLE(usb, hanwang_ids);
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static struct usb_driver hanwang_driver = {
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.name = "hanwang",
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.probe = hanwang_probe,
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.disconnect = hanwang_disconnect,
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.id_table = hanwang_ids,
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};
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module_usb_driver(hanwang_driver);
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