378 lines
9.9 KiB
C
378 lines
9.9 KiB
C
/*
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* Wacom PenPartner USB tablet emulation.
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*
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* Copyright (c) 2006 Openedhand Ltd.
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* Author: Andrzej Zaborowski <balrog@zabor.org>
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*
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* Based on hw/usb-hid.c:
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* Copyright (c) 2005 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "console.h"
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#include "usb.h"
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#include "usb-desc.h"
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/* Interface requests */
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#define WACOM_GET_REPORT 0x2101
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#define WACOM_SET_REPORT 0x2109
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/* HID interface requests */
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#define HID_GET_REPORT 0xa101
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#define HID_GET_IDLE 0xa102
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#define HID_GET_PROTOCOL 0xa103
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#define HID_SET_IDLE 0x210a
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#define HID_SET_PROTOCOL 0x210b
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typedef struct USBWacomState {
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USBDevice dev;
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QEMUPutMouseEntry *eh_entry;
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int dx, dy, dz, buttons_state;
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int x, y;
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int mouse_grabbed;
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enum {
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WACOM_MODE_HID = 1,
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WACOM_MODE_WACOM = 2,
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} mode;
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uint8_t idle;
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int changed;
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} USBWacomState;
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enum {
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STR_MANUFACTURER = 1,
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STR_PRODUCT,
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STR_SERIALNUMBER,
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};
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static const USBDescStrings desc_strings = {
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[STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
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[STR_PRODUCT] = "Wacom PenPartner",
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[STR_SERIALNUMBER] = "1",
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};
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static const USBDescIface desc_iface_wacom = {
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.bInterfaceNumber = 0,
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.bNumEndpoints = 1,
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.bInterfaceClass = USB_CLASS_HID,
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.bInterfaceSubClass = 0x01, /* boot */
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.bInterfaceProtocol = 0x02,
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.ndesc = 1,
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.descs = (USBDescOther[]) {
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{
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/* HID descriptor */
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.data = (uint8_t[]) {
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0x09, /* u8 bLength */
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0x21, /* u8 bDescriptorType */
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0x01, 0x10, /* u16 HID_class */
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0x00, /* u8 country_code */
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0x01, /* u8 num_descriptors */
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0x22, /* u8 type: Report */
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0x6e, 0, /* u16 len */
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},
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},
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},
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.eps = (USBDescEndpoint[]) {
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{
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.bEndpointAddress = USB_DIR_IN | 0x01,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize = 8,
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.bInterval = 0x0a,
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},
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},
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};
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static const USBDescDevice desc_device_wacom = {
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.bcdUSB = 0x0110,
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.bMaxPacketSize0 = 8,
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.bNumConfigurations = 1,
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.confs = (USBDescConfig[]) {
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{
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.bNumInterfaces = 1,
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.bConfigurationValue = 1,
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.bmAttributes = 0x80,
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.bMaxPower = 40,
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.nif = 1,
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.ifs = &desc_iface_wacom,
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},
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},
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};
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static const USBDesc desc_wacom = {
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.id = {
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.idVendor = 0x056a,
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.idProduct = 0x0000,
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.bcdDevice = 0x4210,
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.iManufacturer = STR_MANUFACTURER,
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.iProduct = STR_PRODUCT,
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.iSerialNumber = STR_SERIALNUMBER,
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},
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.full = &desc_device_wacom,
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.str = desc_strings,
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};
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static void usb_mouse_event(void *opaque,
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int dx1, int dy1, int dz1, int buttons_state)
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{
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USBWacomState *s = opaque;
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s->dx += dx1;
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s->dy += dy1;
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s->dz += dz1;
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s->buttons_state = buttons_state;
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s->changed = 1;
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}
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static void usb_wacom_event(void *opaque,
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int x, int y, int dz, int buttons_state)
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{
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USBWacomState *s = opaque;
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/* scale to Penpartner resolution */
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s->x = (x * 5040 / 0x7FFF);
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s->y = (y * 3780 / 0x7FFF);
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s->dz += dz;
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s->buttons_state = buttons_state;
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s->changed = 1;
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}
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static inline int int_clamp(int val, int vmin, int vmax)
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{
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if (val < vmin)
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return vmin;
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else if (val > vmax)
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return vmax;
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else
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return val;
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}
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static int usb_mouse_poll(USBWacomState *s, uint8_t *buf, int len)
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{
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int dx, dy, dz, b, l;
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if (!s->mouse_grabbed) {
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s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
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"QEMU PenPartner tablet");
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qemu_activate_mouse_event_handler(s->eh_entry);
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s->mouse_grabbed = 1;
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}
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dx = int_clamp(s->dx, -128, 127);
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dy = int_clamp(s->dy, -128, 127);
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dz = int_clamp(s->dz, -128, 127);
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s->dx -= dx;
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s->dy -= dy;
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s->dz -= dz;
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b = 0;
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if (s->buttons_state & MOUSE_EVENT_LBUTTON)
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b |= 0x01;
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if (s->buttons_state & MOUSE_EVENT_RBUTTON)
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b |= 0x02;
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if (s->buttons_state & MOUSE_EVENT_MBUTTON)
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b |= 0x04;
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buf[0] = b;
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buf[1] = dx;
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buf[2] = dy;
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l = 3;
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if (len >= 4) {
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buf[3] = dz;
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l = 4;
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}
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return l;
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}
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static int usb_wacom_poll(USBWacomState *s, uint8_t *buf, int len)
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{
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int b;
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if (!s->mouse_grabbed) {
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s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
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"QEMU PenPartner tablet");
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qemu_activate_mouse_event_handler(s->eh_entry);
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s->mouse_grabbed = 1;
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}
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b = 0;
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if (s->buttons_state & MOUSE_EVENT_LBUTTON)
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b |= 0x01;
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if (s->buttons_state & MOUSE_EVENT_RBUTTON)
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b |= 0x40;
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if (s->buttons_state & MOUSE_EVENT_MBUTTON)
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b |= 0x20; /* eraser */
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if (len < 7)
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return 0;
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buf[0] = s->mode;
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buf[5] = 0x00 | (b & 0xf0);
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buf[1] = s->x & 0xff;
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buf[2] = s->x >> 8;
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buf[3] = s->y & 0xff;
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buf[4] = s->y >> 8;
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if (b & 0x3f) {
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buf[6] = 0;
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} else {
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buf[6] = (unsigned char) -127;
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}
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return 7;
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}
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static void usb_wacom_handle_reset(USBDevice *dev)
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{
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USBWacomState *s = (USBWacomState *) dev;
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s->dx = 0;
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s->dy = 0;
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s->dz = 0;
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s->x = 0;
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s->y = 0;
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s->buttons_state = 0;
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s->mode = WACOM_MODE_HID;
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}
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static int usb_wacom_handle_control(USBDevice *dev, USBPacket *p,
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int request, int value, int index, int length, uint8_t *data)
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{
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USBWacomState *s = (USBWacomState *) dev;
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int ret;
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ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
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if (ret >= 0) {
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return ret;
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}
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ret = 0;
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switch (request) {
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case DeviceRequest | USB_REQ_GET_INTERFACE:
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data[0] = 0;
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ret = 1;
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break;
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case DeviceOutRequest | USB_REQ_SET_INTERFACE:
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ret = 0;
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break;
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case WACOM_SET_REPORT:
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if (s->mouse_grabbed) {
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qemu_remove_mouse_event_handler(s->eh_entry);
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s->mouse_grabbed = 0;
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}
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s->mode = data[0];
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ret = 0;
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break;
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case WACOM_GET_REPORT:
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data[0] = 0;
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data[1] = s->mode;
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ret = 2;
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break;
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/* USB HID requests */
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case HID_GET_REPORT:
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if (s->mode == WACOM_MODE_HID)
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ret = usb_mouse_poll(s, data, length);
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else if (s->mode == WACOM_MODE_WACOM)
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ret = usb_wacom_poll(s, data, length);
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break;
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case HID_GET_IDLE:
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ret = 1;
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data[0] = s->idle;
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break;
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case HID_SET_IDLE:
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s->idle = (uint8_t) (value >> 8);
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ret = 0;
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break;
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default:
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ret = USB_RET_STALL;
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break;
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}
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return ret;
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}
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static int usb_wacom_handle_data(USBDevice *dev, USBPacket *p)
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{
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USBWacomState *s = (USBWacomState *) dev;
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int ret = 0;
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switch (p->pid) {
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case USB_TOKEN_IN:
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if (p->devep == 1) {
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if (!(s->changed || s->idle))
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return USB_RET_NAK;
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s->changed = 0;
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if (s->mode == WACOM_MODE_HID)
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ret = usb_mouse_poll(s, p->data, p->len);
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else if (s->mode == WACOM_MODE_WACOM)
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ret = usb_wacom_poll(s, p->data, p->len);
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break;
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}
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/* Fall through. */
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case USB_TOKEN_OUT:
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default:
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ret = USB_RET_STALL;
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break;
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}
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return ret;
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}
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static void usb_wacom_handle_destroy(USBDevice *dev)
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{
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USBWacomState *s = (USBWacomState *) dev;
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if (s->mouse_grabbed) {
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qemu_remove_mouse_event_handler(s->eh_entry);
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s->mouse_grabbed = 0;
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}
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}
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static int usb_wacom_initfn(USBDevice *dev)
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{
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USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev);
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usb_desc_init(dev);
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s->changed = 1;
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return 0;
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}
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static const VMStateDescription vmstate_usb_wacom = {
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.name = "usb-wacom",
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.unmigratable = 1,
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};
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static struct USBDeviceInfo wacom_info = {
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.product_desc = "QEMU PenPartner Tablet",
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.qdev.name = "usb-wacom-tablet",
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.qdev.desc = "QEMU PenPartner Tablet",
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.usbdevice_name = "wacom-tablet",
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.usb_desc = &desc_wacom,
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.qdev.size = sizeof(USBWacomState),
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.qdev.vmsd = &vmstate_usb_wacom,
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.init = usb_wacom_initfn,
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.handle_packet = usb_generic_handle_packet,
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.handle_reset = usb_wacom_handle_reset,
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.handle_control = usb_wacom_handle_control,
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.handle_data = usb_wacom_handle_data,
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.handle_destroy = usb_wacom_handle_destroy,
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};
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static void usb_wacom_register_devices(void)
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{
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usb_qdev_register(&wacom_info);
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}
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device_init(usb_wacom_register_devices)
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