uts.c revision 1.3.14.2
1 /* $NetBSD: uts.c,v 1.3.14.2 2014/12/03 22:33:56 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Pierre Pronchery (khorben (at) defora.org). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * USB generic Touch Screen driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: uts.c,v 1.3.14.2 2014/12/03 22:33:56 skrll Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <sys/ioctl.h> 44 #include <sys/vnode.h> 45 46 #include <dev/usb/usb.h> 47 #include <dev/usb/usbhid.h> 48 49 #include <dev/usb/usbdi.h> 50 #include <dev/usb/usbdi_util.h> 51 #include <dev/usb/usbdevs.h> 52 #include <dev/usb/usb_quirks.h> 53 #include <dev/usb/uhidev.h> 54 #include <dev/usb/hid.h> 55 56 #include <dev/wscons/wsconsio.h> 57 #include <dev/wscons/wsmousevar.h> 58 #include <dev/wscons/tpcalibvar.h> 59 60 #ifdef UTS_DEBUG 61 #define DPRINTF(x) if (utsdebug) printf x 62 #define DPRINTFN(n,x) if (utsdebug>(n)) printf x 63 int utsdebug = 0; 64 #else 65 #define DPRINTF(x) 66 #define DPRINTFN(n,x) 67 #endif 68 69 70 struct uts_softc { 71 struct uhidev sc_hdev; 72 73 struct hid_location sc_loc_x, sc_loc_y, sc_loc_z; 74 struct hid_location sc_loc_btn; 75 76 int sc_enabled; 77 78 int flags; /* device configuration */ 79 #define UTS_ABS 0x1 /* absolute position */ 80 81 uint32_t sc_buttons; /* touchscreen button status */ 82 device_t sc_wsmousedev; 83 struct tpcalib_softc sc_tpcalib; /* calibration */ 84 struct wsmouse_calibcoords sc_calibcoords; 85 86 char sc_dying; 87 }; 88 89 #define TSCREEN_FLAGS_MASK (HIO_CONST|HIO_RELATIVE) 90 91 Static void uts_intr(struct uhidev *addr, void *ibuf, u_int len); 92 93 Static int uts_enable(void *); 94 Static void uts_disable(void *); 95 Static int uts_ioctl(void *, u_long, void *, int, struct lwp *); 96 97 Static const struct wsmouse_accessops uts_accessops = { 98 uts_enable, 99 uts_ioctl, 100 uts_disable, 101 }; 102 103 Static int uts_match(device_t, cfdata_t, void *); 104 Static void uts_attach(device_t, device_t, void *); 105 Static void uts_childdet(device_t, device_t); 106 Static int uts_detach(device_t, int); 107 Static int uts_activate(device_t, enum devact); 108 109 extern struct cfdriver uts_cd; 110 111 CFATTACH_DECL2_NEW(uts, sizeof(struct uts_softc), uts_match, uts_attach, 112 uts_detach, uts_activate, NULL, uts_childdet); 113 114 Static int 115 uts_match(device_t parent, cfdata_t match, void *aux) 116 { 117 struct uhidev_attach_arg *uha = aux; 118 int size; 119 void *desc; 120 121 uhidev_get_report_desc(uha->parent, &desc, &size); 122 if (!hid_is_collection(desc, size, uha->reportid, 123 HID_USAGE2(HUP_DIGITIZERS, HUD_TOUCH_SCREEN)) && 124 !hid_is_collection(desc, size, uha->reportid, 125 HID_USAGE2(HUP_DIGITIZERS, HUD_FINGER))) 126 return UMATCH_NONE; 127 128 return UMATCH_IFACECLASS; 129 } 130 131 Static void 132 uts_attach(device_t parent, device_t self, void *aux) 133 { 134 struct uts_softc *sc = device_private(self); 135 struct uhidev_attach_arg *uha = aux; 136 struct wsmousedev_attach_args a; 137 int size; 138 void *desc; 139 uint32_t flags; 140 struct hid_data * d; 141 struct hid_item item; 142 143 aprint_naive("\n"); 144 145 sc->sc_hdev.sc_dev = self; 146 sc->sc_hdev.sc_intr = uts_intr; 147 sc->sc_hdev.sc_parent = uha->parent; 148 sc->sc_hdev.sc_report_id = uha->reportid; 149 150 uhidev_get_report_desc(uha->parent, &desc, &size); 151 152 if (!pmf_device_register(self, NULL, NULL)) 153 aprint_error_dev(self, "couldn't establish power handler\n"); 154 155 /* requires HID usage Generic_Desktop:X */ 156 if (!hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_X), 157 uha->reportid, hid_input, &sc->sc_loc_x, &flags)) { 158 aprint_error_dev(sc->sc_hdev.sc_dev, 159 "touchscreen has no X report\n"); 160 return; 161 } 162 switch (flags & TSCREEN_FLAGS_MASK) { 163 case 0: 164 sc->flags |= UTS_ABS; 165 break; 166 case HIO_RELATIVE: 167 break; 168 default: 169 aprint_error_dev(sc->sc_hdev.sc_dev, 170 "X report 0x%04x not supported\n", flags); 171 return; 172 } 173 174 /* requires HID usage Generic_Desktop:Y */ 175 if (!hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_Y), 176 uha->reportid, hid_input, &sc->sc_loc_y, &flags)) { 177 aprint_error_dev(sc->sc_hdev.sc_dev, 178 "touchscreen has no Y report\n"); 179 return; 180 } 181 switch (flags & TSCREEN_FLAGS_MASK) { 182 case 0: 183 sc->flags |= UTS_ABS; 184 break; 185 case HIO_RELATIVE: 186 break; 187 default: 188 aprint_error_dev(sc->sc_hdev.sc_dev, 189 "Y report 0x%04x not supported\n", flags); 190 return; 191 } 192 193 /* requires HID usage Digitizer:Tip_Switch */ 194 if (!hid_locate(desc, size, HID_USAGE2(HUP_DIGITIZERS, HUD_TIP_SWITCH), 195 uha->reportid, hid_input, &sc->sc_loc_btn, 0)) { 196 aprint_error_dev(sc->sc_hdev.sc_dev, 197 "touchscreen has no tip switch report\n"); 198 return; 199 } 200 201 /* requires HID usage Digitizer:In_Range */ 202 if (!hid_locate(desc, size, HID_USAGE2(HUP_DIGITIZERS, HUD_IN_RANGE), 203 uha->reportid, hid_input, &sc->sc_loc_z, &flags)) { 204 aprint_error_dev(sc->sc_hdev.sc_dev, 205 "touchscreen has no range report\n"); 206 return; 207 } 208 209 /* multi-touch support would need HUD_CONTACTID and HUD_CONTACTMAX */ 210 211 #ifdef UTS_DEBUG 212 DPRINTF(("uts_attach: sc=%p\n", sc)); 213 DPRINTF(("uts_attach: X\t%d/%d\n", 214 sc->sc_loc_x.pos, sc->sc_loc_x.size)); 215 DPRINTF(("uts_attach: Y\t%d/%d\n", 216 sc->sc_loc_y.pos, sc->sc_loc_y.size)); 217 DPRINTF(("uts_attach: Z\t%d/%d\n", 218 sc->sc_loc_z.pos, sc->sc_loc_z.size)); 219 #endif 220 221 a.accessops = &uts_accessops; 222 a.accesscookie = sc; 223 224 sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint); 225 226 /* calibrate the touchscreen */ 227 memset(&sc->sc_calibcoords, 0, sizeof(sc->sc_calibcoords)); 228 sc->sc_calibcoords.maxx = 4095; 229 sc->sc_calibcoords.maxy = 4095; 230 sc->sc_calibcoords.samplelen = WSMOUSE_CALIBCOORDS_RESET; 231 d = hid_start_parse(desc, size, hid_input); 232 while (hid_get_item(d, &item)) { 233 if (item.kind != hid_input 234 || HID_GET_USAGE_PAGE(item.usage) != HUP_GENERIC_DESKTOP 235 || item.report_ID != sc->sc_hdev.sc_report_id) 236 continue; 237 if (HID_GET_USAGE(item.usage) == HUG_X) { 238 sc->sc_calibcoords.minx = item.logical_minimum; 239 sc->sc_calibcoords.maxx = item.logical_maximum; 240 } 241 if (HID_GET_USAGE(item.usage) == HUG_Y) { 242 sc->sc_calibcoords.miny = item.logical_minimum; 243 sc->sc_calibcoords.maxy = item.logical_maximum; 244 } 245 } 246 hid_end_parse(d); 247 248 tpcalib_init(&sc->sc_tpcalib); 249 tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS, 250 (void *)&sc->sc_calibcoords, 0, 0); 251 252 return; 253 } 254 255 Static int 256 uts_detach(device_t self, int flags) 257 { 258 struct uts_softc *sc = device_private(self); 259 int rv = 0; 260 261 DPRINTF(("uts_detach: sc=%p flags=%d\n", sc, flags)); 262 263 if (sc->sc_wsmousedev != NULL) 264 rv = config_detach(sc->sc_wsmousedev, flags); 265 266 pmf_device_deregister(self); 267 268 return rv; 269 } 270 271 Static void 272 uts_childdet(device_t self, device_t child) 273 { 274 struct uts_softc *sc = device_private(self); 275 276 KASSERT(sc->sc_wsmousedev == child); 277 sc->sc_wsmousedev = NULL; 278 } 279 280 Static int 281 uts_activate(device_t self, enum devact act) 282 { 283 struct uts_softc *sc = device_private(self); 284 285 switch (act) { 286 case DVACT_DEACTIVATE: 287 sc->sc_dying = 1; 288 return 0; 289 default: 290 return EOPNOTSUPP; 291 } 292 } 293 294 Static int 295 uts_enable(void *v) 296 { 297 struct uts_softc *sc = v; 298 299 DPRINTFN(1,("uts_enable: sc=%p\n", sc)); 300 301 if (sc->sc_dying) 302 return EIO; 303 304 if (sc->sc_enabled) 305 return EBUSY; 306 307 sc->sc_enabled = 1; 308 sc->sc_buttons = 0; 309 310 return uhidev_open(&sc->sc_hdev); 311 } 312 313 Static void 314 uts_disable(void *v) 315 { 316 struct uts_softc *sc = v; 317 318 DPRINTFN(1,("uts_disable: sc=%p\n", sc)); 319 #ifdef DIAGNOSTIC 320 if (!sc->sc_enabled) { 321 printf("uts_disable: not enabled\n"); 322 return; 323 } 324 #endif 325 326 sc->sc_enabled = 0; 327 uhidev_close(&sc->sc_hdev); 328 } 329 330 Static int 331 uts_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l) 332 { 333 struct uts_softc *sc = v; 334 335 switch (cmd) { 336 case WSMOUSEIO_GTYPE: 337 if (sc->flags & UTS_ABS) 338 *(u_int *)data = WSMOUSE_TYPE_TPANEL; 339 else 340 *(u_int *)data = WSMOUSE_TYPE_USB; 341 return 0; 342 case WSMOUSEIO_SCALIBCOORDS: 343 case WSMOUSEIO_GCALIBCOORDS: 344 return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, l); 345 } 346 347 return EPASSTHROUGH; 348 } 349 350 Static void 351 uts_intr(struct uhidev *addr, void *ibuf, u_int len) 352 { 353 struct uts_softc *sc = (struct uts_softc *)addr; 354 int dx, dy, dz; 355 uint32_t buttons = 0; 356 int flags, s; 357 358 DPRINTFN(5,("uts_intr: len=%d\n", len)); 359 360 flags = WSMOUSE_INPUT_DELTA | WSMOUSE_INPUT_ABSOLUTE_Z; 361 362 dx = hid_get_data(ibuf, &sc->sc_loc_x); 363 if (sc->flags & UTS_ABS) { 364 flags |= (WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y); 365 dy = hid_get_data(ibuf, &sc->sc_loc_y); 366 tpcalib_trans(&sc->sc_tpcalib, dx, dy, &dx, &dy); 367 } else 368 dy = -hid_get_data(ibuf, &sc->sc_loc_y); 369 370 dz = hid_get_data(ibuf, &sc->sc_loc_z); 371 372 if (hid_get_data(ibuf, &sc->sc_loc_btn)) 373 buttons |= 1; 374 375 if (dx != 0 || dy != 0 || dz != 0 || buttons != sc->sc_buttons) { 376 DPRINTFN(10,("uts_intr: x:%d y:%d z:%d buttons:0x%x\n", 377 dx, dy, dz, buttons)); 378 sc->sc_buttons = buttons; 379 if (sc->sc_wsmousedev != NULL) { 380 s = spltty(); 381 wsmouse_input(sc->sc_wsmousedev, buttons, dx, dy, dz, 0, 382 flags); 383 splx(s); 384 } 385 } 386 } 387
Indexes created Tue Sep 30 07:10:03 GMT 2025