1 /* $OpenBSD: uwacom.c,v 1.1 2016/09/12 08:12:06 mpi Exp $ */ 2 3 /* 4 * Copyright (c) 2016 Frank Groeneveld <frank@frankgroeneveld.nl> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /* Driver for USB Wacom tablets */ 20 21 #include <sys/param.h> 22 #include <sys/systm.h> 23 #include <sys/device.h> 24 25 #include <dev/usb/usb.h> 26 #include <dev/usb/usbhid.h> 27 28 #include <dev/usb/usbdi.h> 29 #include <dev/usb/usbdevs.h> 30 #include <dev/usb/uhidev.h> 31 32 #include <dev/wscons/wsconsio.h> 33 #include <dev/wscons/wsmousevar.h> 34 35 #include <dev/hid/hidmsvar.h> 36 37 struct uwacom_softc { 38 struct uhidev sc_hdev; 39 struct hidms sc_ms; 40 struct hid_location sc_loc_tip_press; 41 }; 42 43 struct cfdriver uwacom_cd = { 44 NULL, "uwacom", DV_DULL 45 }; 46 47 48 const struct usb_devno uwacom_devs[] = { 49 { USB_VENDOR_WACOM, USB_PRODUCT_WACOM_INTUOS_DRAW } 50 }; 51 52 int uwacom_match(struct device *, void *, void *); 53 void uwacom_attach(struct device *, struct device *, void *); 54 int uwacom_detach(struct device *, int); 55 void uwacom_intr(struct uhidev *, void *, u_int); 56 int uwacom_enable(void *); 57 void uwacom_disable(void *); 58 int uwacom_ioctl(void *, u_long, caddr_t, int, struct proc *); 59 60 const struct cfattach uwacom_ca = { 61 sizeof(struct uwacom_softc), uwacom_match, uwacom_attach, uwacom_detach 62 }; 63 64 const struct wsmouse_accessops uwacom_accessops = { 65 uwacom_enable, 66 uwacom_ioctl, 67 uwacom_disable, 68 }; 69 70 int 71 uwacom_match(struct device *parent, void *match, void *aux) 72 { 73 struct uhidev_attach_arg *uha = aux; 74 int size; 75 void *desc; 76 77 if (usb_lookup(uwacom_devs, uha->uaa->vendor, 78 uha->uaa->product) == NULL) 79 return (UMATCH_NONE); 80 81 uhidev_get_report_desc(uha->parent, &desc, &size); 82 83 if (!hid_locate(desc, size, HID_USAGE2(HUP_WACOM, HUG_POINTER), 84 uha->reportid, hid_input, NULL, NULL)) 85 return (UMATCH_NONE); 86 87 return (UMATCH_IFACECLASS); 88 } 89 90 void 91 uwacom_attach(struct device *parent, struct device *self, void *aux) 92 { 93 struct uwacom_softc *sc = (struct uwacom_softc *)self; 94 struct hidms *ms = &sc->sc_ms; 95 struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)aux; 96 struct usb_attach_arg *uaa = uha->uaa; 97 int size, repid; 98 void *desc; 99 100 sc->sc_hdev.sc_intr = uwacom_intr; 101 sc->sc_hdev.sc_parent = uha->parent; 102 sc->sc_hdev.sc_udev = uaa->device; 103 sc->sc_hdev.sc_report_id = uha->reportid; 104 105 uhidev_get_report_desc(uha->parent, &desc, &size); 106 repid = uha->reportid; 107 sc->sc_hdev.sc_isize = hid_report_size(desc, size, hid_input, repid); 108 sc->sc_hdev.sc_osize = hid_report_size(desc, size, hid_output, repid); 109 sc->sc_hdev.sc_fsize = hid_report_size(desc, size, hid_feature, repid); 110 111 ms->sc_device = self; 112 ms->sc_rawmode = 1; 113 ms->sc_flags = HIDMS_ABSX | HIDMS_ABSY; 114 ms->sc_num_buttons = 3; 115 ms->sc_loc_x.pos = 8; 116 ms->sc_loc_x.size = 16; 117 ms->sc_loc_y.pos = 24; 118 ms->sc_loc_y.size = 16; 119 120 ms->sc_tsscale.minx = 0; 121 ms->sc_tsscale.maxx = 7600; 122 ms->sc_tsscale.miny = 0; 123 ms->sc_tsscale.maxy = 4750; 124 125 ms->sc_loc_btn[0].pos = 0; 126 ms->sc_loc_btn[0].size = 1; 127 ms->sc_loc_btn[1].pos = 1; 128 ms->sc_loc_btn[1].size = 1; 129 ms->sc_loc_btn[2].pos = 2; 130 ms->sc_loc_btn[2].size = 1; 131 132 sc->sc_loc_tip_press.pos = 43; 133 sc->sc_loc_tip_press.size = 8; 134 135 hidms_attach(ms, &uwacom_accessops); 136 } 137 138 int 139 uwacom_detach(struct device *self, int flags) 140 { 141 struct uwacom_softc *sc = (struct uwacom_softc *)self; 142 struct hidms *ms = &sc->sc_ms; 143 144 return hidms_detach(ms, flags); 145 } 146 147 void 148 uwacom_intr(struct uhidev *addr, void *buf, u_int len) 149 { 150 struct uwacom_softc *sc = (struct uwacom_softc *)addr; 151 struct hidms *ms = &sc->sc_ms; 152 u_int32_t buttons = 0; 153 uint8_t *data = (uint8_t *)buf; 154 int i, x, y, pressure; 155 156 if (ms->sc_enabled == 0) 157 return; 158 159 /* ignore proximity, it will cause invalid button 2 events */ 160 if ((data[0] & 0xf0) == 0xc0) 161 return; 162 163 x = be16toh(hid_get_data(data, len, &ms->sc_loc_x)); 164 y = be16toh(hid_get_data(data, len, &ms->sc_loc_y)); 165 pressure = hid_get_data(data, len, &sc->sc_loc_tip_press); 166 167 for (i = 0; i < ms->sc_num_buttons; i++) 168 if (hid_get_data(data, len, &ms->sc_loc_btn[i])) 169 buttons |= (1 << i); 170 171 /* button 0 reporting is flaky, use tip pressure for it */ 172 if (pressure > 10) 173 buttons |= 1; 174 else 175 buttons &= ~1; 176 177 if (x != 0 || y != 0 || buttons != ms->sc_buttons) { 178 wsmouse_position(ms->sc_wsmousedev, x, y); 179 wsmouse_buttons(ms->sc_wsmousedev, buttons); 180 wsmouse_input_sync(ms->sc_wsmousedev); 181 } 182 } 183 184 int 185 uwacom_enable(void *v) 186 { 187 struct uwacom_softc *sc = v; 188 struct hidms *ms = &sc->sc_ms; 189 int rv; 190 191 if (usbd_is_dying(sc->sc_hdev.sc_udev)) 192 return EIO; 193 194 if ((rv = hidms_enable(ms)) != 0) 195 return rv; 196 197 return uhidev_open(&sc->sc_hdev); 198 } 199 200 void 201 uwacom_disable(void *v) 202 { 203 struct uwacom_softc *sc = v; 204 struct hidms *ms = &sc->sc_ms; 205 206 hidms_disable(ms); 207 uhidev_close(&sc->sc_hdev); 208 } 209 210 int 211 uwacom_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p) 212 { 213 struct uwacom_softc *sc = v; 214 struct hidms *ms = &sc->sc_ms; 215 int rc; 216 217 switch (cmd) { 218 case WSMOUSEIO_GTYPE: 219 *(u_int *)data = WSMOUSE_TYPE_TPANEL; 220 return 0; 221 } 222 223 rc = uhidev_ioctl(&sc->sc_hdev, cmd, data, flag, p); 224 if (rc != -1) 225 return rc; 226 227 return hidms_ioctl(ms, cmd, data, flag, p); 228 } 229 230