j6x0tp.c revision 1.2
1 /* $NetBSD: j6x0tp.c,v 1.2 2003/10/22 23:52:46 uwe Exp $ */ 2 3 /* 4 * Copyright (c) 2003 Valeriy E. Ushakov 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: j6x0tp.c,v 1.2 2003/10/22 23:52:46 uwe Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/device.h> 36 #include <sys/malloc.h> 37 #include <sys/systm.h> 38 #include <sys/callout.h> 39 #ifdef GPROF 40 #include <sys/gmon.h> 41 #endif 42 43 #include <dev/wscons/wsconsio.h> 44 #include <dev/wscons/wsmousevar.h> 45 #include <dev/hpc/tpcalibvar.h> 46 47 #include <machine/platid.h> 48 #include <machine/platid_mask.h> 49 50 #include <machine/intr.h> 51 52 #include <sh3/exception.h> 53 #include <sh3/intcreg.h> 54 #include <sh3/pfcreg.h> 55 #include <sh3/adcreg.h> 56 57 #include <sh3/dev/adcvar.h> 58 59 60 #define J6X0TP_DEBUG 61 #if 0 /* XXX: disabled in favor of local version that uses printf_nolog */ 62 #define DPRINTF_ENABLE 63 #define DPRINTF_DEBUG j6x0tp_debug 64 #define DPRINTF_LEVEL 0 65 #include <machine/debug.h> 66 #else 67 #ifdef J6X0TP_DEBUG 68 volatile int j6x0tp_debug = 0; 69 #define DPRINTF(arg) if (j6x0tp_debug) printf_nolog arg 70 #define DPRINTFN(n, arg) if (j6x0tp_debug > (n)) printf_nolog arg 71 #else 72 #define DPRINTF(arg) ((void)0) 73 #define DPRINTFN(n, arg) ((void)0) 74 #endif 75 #endif 76 77 78 /* PFC bits pertinent to Jornada 6x0 touchpanel */ 79 #define PHDR_TP_PEN_DOWN 0x08 80 81 #define SCPDR_TP_SCAN_ENABLE 0x20 82 #define SCPDR_TP_SCAN_Y 0x02 83 #define SCPDR_TP_SCAN_X 0x01 84 85 /* A/D covnerter channels to get x/y from */ 86 #define ADC_CHANNEL_TP_Y 1 87 #define ADC_CHANNEL_TP_X 2 88 89 90 struct j6x0tp_softc { 91 struct device sc_dev; 92 93 struct callout sc_touch_ch; 94 int sc_intrlevel; 95 int sc_enabled; 96 97 struct device *sc_wsmousedev; 98 struct tpcalib_softc sc_tpcalib; 99 }; 100 101 static int j6x0tp_match(struct device *, struct cfdata *, void *); 102 static void j6x0tp_attach(struct device *, struct device *, void *); 103 104 CFATTACH_DECL(j6x0tp, sizeof(struct j6x0tp_softc), 105 j6x0tp_match, j6x0tp_attach, NULL, NULL); 106 107 108 static int j6x0tp_enable(void *); 109 static int j6x0tp_ioctl(void *, u_long, caddr_t, int, struct proc *); 110 static void j6x0tp_disable(void *); 111 112 const struct wsmouse_accessops j6x0tp_accessops = { 113 j6x0tp_enable, 114 j6x0tp_ioctl, 115 j6x0tp_disable, 116 }; 117 118 static const struct wsmouse_calibcoords j6x0tp_default_calib = { 119 0, 0, 639, 239, 120 4, 121 {{ 38, 80, 0, 0 }, /* upper left */ 122 { 950, 80, 639, 0 }, /* upper right */ 123 { 38, 900, 0, 239 }, /* lower left */ 124 { 950, 900, 639, 239 }} /* lower right */ 125 }; 126 127 128 static int j6x0tp_intr(void *); 129 static void j6x0tp_poll_callout(void *self); 130 131 132 static int 133 j6x0tp_match(struct device *parent, struct cfdata *cfp, void *aux) 134 { 135 136 /* 137 * XXX: does platid_mask_MACH_HP_LX matches _JORNADA_6XX too? 138 * Is 620 wired similarly? 139 */ 140 if (!platid_match(&platid, &platid_mask_MACH_HP_JORNADA_6XX)) 141 return (0); 142 143 if (strcmp(cfp->cf_name, "j6x0tp") != 0) 144 return (0); 145 146 return (1); 147 } 148 149 150 static void 151 j6x0tp_attach(struct device *parent, struct device *self, void *aux) 152 { 153 struct j6x0tp_softc *sc = (struct j6x0tp_softc *)self; 154 struct wsmousedev_attach_args wsma; 155 156 printf("\n"); 157 158 sc->sc_enabled = 0; 159 160 wsma.accessops = &j6x0tp_accessops; 161 wsma.accesscookie = sc; 162 163 sc->sc_wsmousedev = config_found(self, &wsma, wsmousedevprint); 164 if (sc->sc_wsmousedev == NULL) 165 return; 166 167 tpcalib_init(&sc->sc_tpcalib); 168 tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS, 169 (caddr_t)&j6x0tp_default_calib, 0, 0); 170 171 callout_init(&sc->sc_touch_ch); 172 173 intc_intr_establish(SH7709_INTEVT2_IRQ3, IST_EDGE, IPL_TTY, 174 j6x0tp_intr, sc); 175 sc->sc_intrlevel = intc_intr_disable(SH7709_INTEVT2_IRQ3); 176 } 177 178 179 static int 180 j6x0tp_enable(void *self) 181 { 182 struct j6x0tp_softc *sc = (struct j6x0tp_softc *)self; 183 int s; 184 185 DPRINTFN(1, ("%s: enable\n", sc->sc_dev.dv_xname)); 186 187 s = spltty(); 188 189 sc->sc_enabled = 1; 190 intc_intr_enable(SH7709_INTEVT2_IRQ3, sc->sc_intrlevel); 191 192 splx(s); 193 return (0); 194 } 195 196 197 static void 198 j6x0tp_disable(void *self) 199 { 200 struct j6x0tp_softc *sc = (struct j6x0tp_softc *)self; 201 int s; 202 203 s = spltty(); 204 205 DPRINTFN(1, ("%s: disable\n", sc->sc_dev.dv_xname)); 206 207 sc->sc_enabled = 0; 208 intc_intr_disable(SH7709_INTEVT2_IRQ3); 209 callout_stop(&sc->sc_touch_ch); 210 211 splx(s); 212 } 213 214 215 static int 216 j6x0tp_intr(void *self) 217 { 218 struct j6x0tp_softc *sc = (struct j6x0tp_softc *)self; 219 220 uint8_t irr0; 221 uint8_t phdr, touched; 222 unsigned int steady, tremor_timeout; 223 224 irr0 = _reg_read_1(SH7709_IRR0); 225 if ((irr0 & IRR0_IRQ3) == 0) { 226 #ifdef DIAGNOSTIC 227 printf("%s: irr0 %02x?\n", sc->sc_dev.dv_xname, irr0); 228 #endif 229 return (0); 230 } 231 232 /* 233 * Number of times the "touched" bit should be read 234 * consecutively. 235 */ 236 # define TREMOR_THRESHOLD 0x300 237 238 steady = 0; 239 tremor_timeout = TREMOR_THRESHOLD * 16; /* XXX: arbitrary */ 240 touched = PHDR_TP_PEN_DOWN; /* we start with "touched" state */ 241 242 do { 243 phdr = _reg_read_1(SH7709_PHDR); 244 245 if ((phdr & PHDR_TP_PEN_DOWN) == touched) 246 ++steady; 247 else { 248 steady = 0; 249 touched = phdr & PHDR_TP_PEN_DOWN; 250 } 251 252 if (--tremor_timeout == 0) { 253 DPRINTF(("%s: tremor timeout!\n", 254 sc->sc_dev.dv_xname)); 255 goto served; 256 } 257 } while (steady < TREMOR_THRESHOLD); 258 259 if (touched == 0) { 260 DPRINTFN(1, ("%s: tremor\n", sc->sc_dev.dv_xname)); 261 goto served; 262 } 263 264 intc_intr_disable(SH7709_INTEVT2_IRQ3); 265 266 if (sc->sc_enabled) 267 callout_reset(&sc->sc_touch_ch, hz/32, 268 j6x0tp_poll_callout, sc); 269 else 270 DPRINTFN(1, ("%s: intr: !sc_enabled\n", sc->sc_dev.dv_xname)); 271 272 served: 273 /* clear the interrupt */ 274 _reg_write_1(SH7709_IRR0, irr0 & ~IRR0_IRQ3); 275 276 return (1); 277 } 278 279 280 static void 281 j6x0tp_poll_callout(void *self) 282 { 283 struct j6x0tp_softc *sc = (struct j6x0tp_softc *)self; 284 uint8_t phdr, scpdr; 285 uint8_t irr0; 286 int rawx, rawy, x, y; 287 int s; 288 289 s = spltty(); 290 291 if (!sc->sc_enabled) { 292 DPRINTFN(1, ("%s: callout: !sc_enabled\n", 293 sc->sc_dev.dv_xname)); 294 splx(s); 295 return; 296 } 297 298 phdr = _reg_read_1(SH7709_PHDR); 299 if ((phdr & PHDR_TP_PEN_DOWN) == 0) { 300 wsmouse_input(sc->sc_wsmousedev, 0, 0, 0, 0, 0); /* mouse up */ 301 302 intc_intr_enable(SH7709_INTEVT2_IRQ3, sc->sc_intrlevel); 303 304 irr0 = _reg_read_1(SH7709_IRR0); 305 if ((irr0 & IRR0_IRQ3) != 0) 306 _reg_write_1(SH7709_IRR0, irr0 & ~IRR0_IRQ3); 307 308 splx(s); 309 return; 310 } 311 312 /* XXX: protect accesses to SCPDR? */ 313 314 /* Y axis */ 315 scpdr = _reg_read_1(SH7709_SCPDR); 316 scpdr |= SCPDR_TP_SCAN_ENABLE; 317 scpdr &= ~SCPDR_TP_SCAN_Y; /* pull low to scan */ 318 _reg_write_1(SH7709_SCPDR, scpdr); 319 delay(10); 320 rawy = adc_sample_channel(ADC_CHANNEL_TP_Y); 321 322 /* X axis */ 323 scpdr = _reg_read_1(SH7709_SCPDR); 324 scpdr |= SCPDR_TP_SCAN_Y; 325 scpdr &= ~SCPDR_TP_SCAN_X; /* pull low to scan */ 326 _reg_write_1(SH7709_SCPDR, scpdr); 327 delay(10); 328 rawx = adc_sample_channel(ADC_CHANNEL_TP_X); 329 330 /* restore SCPDR */ 331 scpdr = _reg_read_1(SH7709_SCPDR); 332 scpdr |= SCPDR_TP_SCAN_X; 333 scpdr &= ~SCPDR_TP_SCAN_ENABLE; 334 _reg_write_1(SH7709_SCPDR, scpdr); 335 336 tpcalib_trans(&sc->sc_tpcalib, rawx, rawy, &x, &y); 337 338 DPRINTFN(2, ("%s: %4d %4d -> %3d %3d\n", 339 sc->sc_dev.dv_xname, rawx, rawy, x, y)); 340 341 wsmouse_input(sc->sc_wsmousedev, 1, x, y, 0, 342 WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y); 343 344 callout_schedule(&sc->sc_touch_ch, hz/32); 345 splx(s); 346 } 347 348 349 static int 350 j6x0tp_ioctl(void *self, u_long cmd, caddr_t data, int flag, 351 struct proc *p) 352 { 353 struct j6x0tp_softc *sc = (struct j6x0tp_softc *)self; 354 355 switch (cmd) { 356 case WSMOUSEIO_GTYPE: 357 *(u_int *)data = WSMOUSE_TYPE_TPANEL; 358 return (0); 359 360 case WSMOUSEIO_SCALIBCOORDS: 361 case WSMOUSEIO_GCALIBCOORDS: 362 case WSMOUSEIO_GETID: 363 return (tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, p)); 364 365 default: 366 return (EPASSTHROUGH); 367 } 368 } 369
Indexes created Wed Sep 24 05:09:52 GMT 2025