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/* $OpenBSD: uwacom.c,v 1.1 2016/09/12 08:12:06 mpi Exp $ */
/*
* Copyright (c) 2016 Frank Groeneveld <frank@frankgroeneveld.nl>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* Driver for USB Wacom tablets */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/uhidev.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsmousevar.h>
#include <dev/hid/hidmsvar.h>
struct uwacom_softc {
struct uhidev sc_hdev;
struct hidms sc_ms;
struct hid_location sc_loc_tip_press;
};
struct cfdriver uwacom_cd = {
NULL, "uwacom", DV_DULL
};
const struct usb_devno uwacom_devs[] = {
{ USB_VENDOR_WACOM, USB_PRODUCT_WACOM_INTUOS_DRAW }
};
int uwacom_match(struct device *, void *, void *);
void uwacom_attach(struct device *, struct device *, void *);
int uwacom_detach(struct device *, int);
void uwacom_intr(struct uhidev *, void *, u_int);
int uwacom_enable(void *);
void uwacom_disable(void *);
int uwacom_ioctl(void *, u_long, caddr_t, int, struct proc *);
const struct cfattach uwacom_ca = {
sizeof(struct uwacom_softc), uwacom_match, uwacom_attach, uwacom_detach
};
const struct wsmouse_accessops uwacom_accessops = {
uwacom_enable,
uwacom_ioctl,
uwacom_disable,
};
int
uwacom_match(struct device *parent, void *match, void *aux)
{
struct uhidev_attach_arg *uha = aux;
int size;
void *desc;
if (usb_lookup(uwacom_devs, uha->uaa->vendor,
uha->uaa->product) == NULL)
return (UMATCH_NONE);
uhidev_get_report_desc(uha->parent, &desc, &size);
if (!hid_locate(desc, size, HID_USAGE2(HUP_WACOM, HUG_POINTER),
uha->reportid, hid_input, NULL, NULL))
return (UMATCH_NONE);
return (UMATCH_IFACECLASS);
}
void
uwacom_attach(struct device *parent, struct device *self, void *aux)
{
struct uwacom_softc *sc = (struct uwacom_softc *)self;
struct hidms *ms = &sc->sc_ms;
struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)aux;
struct usb_attach_arg *uaa = uha->uaa;
int size, repid;
void *desc;
sc->sc_hdev.sc_intr = uwacom_intr;
sc->sc_hdev.sc_parent = uha->parent;
sc->sc_hdev.sc_udev = uaa->device;
sc->sc_hdev.sc_report_id = uha->reportid;
uhidev_get_report_desc(uha->parent, &desc, &size);
repid = uha->reportid;
sc->sc_hdev.sc_isize = hid_report_size(desc, size, hid_input, repid);
sc->sc_hdev.sc_osize = hid_report_size(desc, size, hid_output, repid);
sc->sc_hdev.sc_fsize = hid_report_size(desc, size, hid_feature, repid);
ms->sc_device = self;
ms->sc_rawmode = 1;
ms->sc_flags = HIDMS_ABSX | HIDMS_ABSY;
ms->sc_num_buttons = 3;
ms->sc_loc_x.pos = 8;
ms->sc_loc_x.size = 16;
ms->sc_loc_y.pos = 24;
ms->sc_loc_y.size = 16;
ms->sc_tsscale.minx = 0;
ms->sc_tsscale.maxx = 7600;
ms->sc_tsscale.miny = 0;
ms->sc_tsscale.maxy = 4750;
ms->sc_loc_btn[0].pos = 0;
ms->sc_loc_btn[0].size = 1;
ms->sc_loc_btn[1].pos = 1;
ms->sc_loc_btn[1].size = 1;
ms->sc_loc_btn[2].pos = 2;
ms->sc_loc_btn[2].size = 1;
sc->sc_loc_tip_press.pos = 43;
sc->sc_loc_tip_press.size = 8;
hidms_attach(ms, &uwacom_accessops);
}
int
uwacom_detach(struct device *self, int flags)
{
struct uwacom_softc *sc = (struct uwacom_softc *)self;
struct hidms *ms = &sc->sc_ms;
return hidms_detach(ms, flags);
}
void
uwacom_intr(struct uhidev *addr, void *buf, u_int len)
{
struct uwacom_softc *sc = (struct uwacom_softc *)addr;
struct hidms *ms = &sc->sc_ms;
u_int32_t buttons = 0;
uint8_t *data = (uint8_t *)buf;
int i, x, y, pressure;
if (ms->sc_enabled == 0)
return;
/* ignore proximity, it will cause invalid button 2 events */
if ((data[0] & 0xf0) == 0xc0)
return;
x = be16toh(hid_get_data(data, len, &ms->sc_loc_x));
y = be16toh(hid_get_data(data, len, &ms->sc_loc_y));
pressure = hid_get_data(data, len, &sc->sc_loc_tip_press);
for (i = 0; i < ms->sc_num_buttons; i++)
if (hid_get_data(data, len, &ms->sc_loc_btn[i]))
buttons |= (1 << i);
/* button 0 reporting is flaky, use tip pressure for it */
if (pressure > 10)
buttons |= 1;
else
buttons &= ~1;
if (x != 0 || y != 0 || buttons != ms->sc_buttons) {
wsmouse_position(ms->sc_wsmousedev, x, y);
wsmouse_buttons(ms->sc_wsmousedev, buttons);
wsmouse_input_sync(ms->sc_wsmousedev);
}
}
int
uwacom_enable(void *v)
{
struct uwacom_softc *sc = v;
struct hidms *ms = &sc->sc_ms;
int rv;
if (usbd_is_dying(sc->sc_hdev.sc_udev))
return EIO;
if ((rv = hidms_enable(ms)) != 0)
return rv;
return uhidev_open(&sc->sc_hdev);
}
void
uwacom_disable(void *v)
{
struct uwacom_softc *sc = v;
struct hidms *ms = &sc->sc_ms;
hidms_disable(ms);
uhidev_close(&sc->sc_hdev);
}
int
uwacom_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p)
{
struct uwacom_softc *sc = v;
struct hidms *ms = &sc->sc_ms;
int rc;
switch (cmd) {
case WSMOUSEIO_GTYPE:
*(u_int *)data = WSMOUSE_TYPE_TPANEL;
return 0;
}
rc = uhidev_ioctl(&sc->sc_hdev, cmd, data, flag, p);
if (rc != -1)
return rc;
return hidms_ioctl(ms, cmd, data, flag, p);
}
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