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ucbtp.c revision 1.8
      1 /*	$NetBSD: ucbtp.c,v 1.8 2002/03/17 19:40:40 atatat Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * Device driver for PHILIPS UCB1200 Advanced modem/audio analog front-end
     41  *	Touch panel part.
     42  */
     43 
     44 #include "opt_use_poll.h"
     45 
     46 #include <sys/param.h>
     47 #include <sys/systm.h>
     48 #include <sys/device.h>
     49 
     50 #include <machine/bus.h>
     51 #include <machine/intr.h>
     52 #include <machine/bootinfo.h> /* bootinfo */
     53 
     54 #include <dev/wscons/wsconsio.h>
     55 #include <dev/wscons/wsmousevar.h>
     56 
     57 #include <dev/hpc/tpcalibvar.h>
     58 
     59 #include <hpcmips/tx/tx39var.h>
     60 #include <hpcmips/tx/tx39sibvar.h>
     61 #include <hpcmips/tx/tx39sibreg.h>
     62 #include <hpcmips/tx/tx39icureg.h>
     63 
     64 #include <hpcmips/dev/ucb1200var.h>
     65 #include <hpcmips/dev/ucb1200reg.h>
     66 
     67 #include <hpcmips/tx/txsnd.h>
     68 #include <dev/hpc/video_subr.h> /* debug */
     69 
     70 #ifdef UCBTPDEBUG
     71 int	ucbtp_debug = 0;
     72 #define	DPRINTF(arg) if (ucbtp_debug) printf arg;
     73 #define	DPRINTFN(n, arg) if (ucbtp_debug > (n)) printf arg;
     74 #else
     75 #define	DPRINTF(arg)
     76 #define DPRINTFN(n, arg)
     77 #endif
     78 
     79 enum ucbts_stat {
     80 	UCBTS_STAT_DISABLE,
     81 	UCBTS_STAT_RELEASE,
     82 	UCBTS_STAT_TOUCH,
     83 	UCBTS_STAT_DRAG,
     84 };
     85 
     86 #define UCBTS_POSX	1
     87 #define UCBTS_POSY	2
     88 #define UCBTS_PRESS	3
     89 
     90 #define UCBTS_PRESS_THRESHOLD	80
     91 #define UCBTS_TAP_THRESHOLD	5
     92 
     93 enum ucbadc_state {
     94 /* 0 */	UCBADC_IDLE,
     95 /* 1 */	UCBADC_ADC_INIT,
     96 /* 2 */	UCBADC_ADC_FINI,
     97 /* 3 */	UCBADC_MEASUMENT_INIT,
     98 /* 4 */	UCBADC_MEASUMENT_FINI,
     99 /* 5 */	UCBADC_ADC_ENABLE,
    100 /* 6 */	UCBADC_ADC_START0,
    101 /* 7 */	UCBADC_ADC_START1,
    102 /* 8 */	UCBADC_ADC_DATAREAD,
    103 /* 9 */	UCBADC_ADC_DATAREAD_WAIT,
    104 /*10 */	UCBADC_ADC_DISABLE,
    105 /*11 */	UCBADC_ADC_INTRMODE,
    106 /*12 */	UCBADC_ADC_INPUT,
    107 /*13 */	UCBADC_INTR_ACK0,
    108 /*14 */	UCBADC_INTR_ACK1,
    109 /*15 */	UCBADC_INTR_ACK2,
    110 /*16 */	UCBADC_REGREAD,
    111 /*17 */	UCBADC_REGWRITE
    112 };
    113 
    114 struct ucbtp_softc {
    115 	struct device sc_dev;
    116 	struct device *sc_sib; /* parent (TX39 SIB module) */
    117 	struct device *sc_ucb; /* parent (UCB1200 module) */
    118 	tx_chipset_tag_t sc_tc;
    119 
    120 	enum ucbts_stat sc_stat;
    121 	int sc_polling;
    122 	int sc_polling_finish;
    123 	void *sc_pollh;
    124 
    125 	struct tpcalib_softc sc_tpcalib;
    126 	int sc_calibrated;
    127 
    128 	/* measurement value */
    129 	int sc_x, sc_y, sc_p;
    130 	int sc_ox, sc_oy;
    131 	int sc_xy_reverse; /* some platform pin connect interchanged */
    132 
    133 	/*
    134 	 * touch panel state machine
    135 	 */
    136 	void *sm_ih; /* TX39 SIB subframe 0 interrupt handler */
    137 
    138 	int sm_addr; /* UCB1200 register address */
    139 	u_int32_t sm_reg;  /* UCB1200 register data & TX39 SIB header */
    140 	int sm_tmpreg;
    141 #define UCBADC_RETRY_DEFAULT		200
    142 	int sm_retry; /* retry counter */
    143 
    144 	enum ucbadc_state sm_state;
    145 	int		sm_measurement; /* X, Y, Pressure */
    146 #define	UCBADC_MEASUREMENT_X		0
    147 #define	UCBADC_MEASUREMENT_Y		1
    148 #define	UCBADC_MEASUREMENT_PRESSURE	2
    149 	int sm_returnstate;
    150 
    151 	int sm_read_state, sm_write_state;
    152 	int sm_writing;	/* writing state flag */
    153 	u_int32_t sm_write_val;	/* temporary buffer */
    154 
    155 	int sm_rw_retry; /* retry counter for r/w */
    156 
    157 	/* wsmouse */
    158 	struct device *sc_wsmousedev;
    159 };
    160 
    161 int	ucbtp_match(struct device *, struct cfdata *, void *);
    162 void	ucbtp_attach(struct device *, struct device *, void *);
    163 
    164 int	ucbtp_sibintr(void *);
    165 int	ucbtp_poll(void *);
    166 int	ucbtp_adc_async(void *);
    167 int	ucbtp_input(struct ucbtp_softc *);
    168 int	ucbtp_busy(void *);
    169 
    170 int	ucbtp_enable(void *);
    171 int	ucbtp_ioctl(void *, u_long, caddr_t, int, struct proc *);
    172 void	ucbtp_disable(void *);
    173 
    174 struct cfattach ucbtp_ca = {
    175 	sizeof(struct ucbtp_softc), ucbtp_match, ucbtp_attach
    176 };
    177 
    178 const struct wsmouse_accessops ucbtp_accessops = {
    179 	ucbtp_enable,
    180 	ucbtp_ioctl,
    181 	ucbtp_disable,
    182 };
    183 
    184 /*
    185  * XXX currently no calibration method. this is temporary hack.
    186  */
    187 #include <machine/platid.h>
    188 
    189 struct	wsmouse_calibcoords *calibration_sample_lookup(void);
    190 int	ucbtp_calibration(struct ucbtp_softc *);
    191 
    192 struct calibration_sample_table {
    193 	platid_t	cst_platform;
    194 	struct wsmouse_calibcoords cst_sample;
    195 } calibration_sample_table[] = {
    196 	{{{PLATID_WILD, PLATID_MACH_COMPAQ_C_8XX}},  /* uch machine */
    197 	 { 0, 0, 639, 239, 5,
    198 	   {{ 507, 510, 320, 120 },
    199 	    { 898, 757,  40,  40 },
    200 	    { 900, 255,  40, 200 },
    201 	    { 109, 249, 600, 200 },
    202 	    { 110, 753, 600,  40 }}}},
    203 
    204 	{{{PLATID_WILD, PLATID_MACH_COMPAQ_C_2010}}, /* uch machine */
    205 	 { 0, 0, 639, 239, 5,
    206 	   {{ 506, 487, 320, 120 },
    207 	    { 880, 250,  40,  40 },
    208 	    { 880, 718,  40, 200 },
    209 	    { 140, 726, 600, 200 },
    210 	    { 137, 250, 600,  40 }}}},
    211 
    212 	{{{PLATID_WILD, PLATID_MACH_SHARP_MOBILON_HC4100}}, /* uch machine */
    213 	 { 0, 0, 639, 239, 5,
    214 	   {{ 497, 501, 320, 120 },
    215 	    { 752, 893,  40,  40 },
    216 	    { 242, 891,  40, 200 },
    217 	    { 241, 115, 600, 200 },
    218 	    { 747, 101, 600,  40 }}}},
    219 
    220 	{{{PLATID_WILD, PLATID_MACH_SHARP_TELIOS_HCAJ1}}, /* uch machine */
    221 	 { 0, 0, 799, 479, 5,
    222 	   {{ 850, 150,   1,   1 },
    223 	    { 850, 880,   1, 479 },
    224 	    { 850, 880,   1, 479 },
    225 	    {  85, 880, 799, 479 },
    226 	    {  85, 150, 799,   1 }}}},
    227 
    228 	{{{PLATID_UNKNOWN, PLATID_UNKNOWN}},
    229 	 { 0, 0, 639, 239, 5,
    230 	   {{0, 0, 0, 0},
    231 	    {0, 0, 0, 0},
    232 	    {0, 0, 0, 0},
    233 	    {0, 0, 0, 0},
    234 	    {0, 0, 0, 0}}}},
    235 };
    236 
    237 struct wsmouse_calibcoords *
    238 calibration_sample_lookup()
    239 {
    240 	struct calibration_sample_table *tab;
    241 	platid_mask_t mask;
    242 
    243 	for (tab = calibration_sample_table;
    244 	    tab->cst_platform.dw.dw1 != PLATID_UNKNOWN; tab++) {
    245 
    246 		mask = PLATID_DEREF(&tab->cst_platform);
    247 
    248 		if (platid_match(&platid, &mask)) {
    249 			return (&tab->cst_sample);
    250 		}
    251 	}
    252 
    253 	return (0);
    254 }
    255 
    256 int
    257 ucbtp_calibration(struct ucbtp_softc *sc)
    258 {
    259 	struct wsmouse_calibcoords *cs;
    260 
    261 	if (sc->sc_tc->tc_videot)
    262 		video_calibration_pattern(sc->sc_tc->tc_videot); /* debug */
    263 
    264 	tpcalib_init(&sc->sc_tpcalib);
    265 
    266 	if (!(cs = calibration_sample_lookup())) {
    267 		DPRINTF(("no calibration data"));
    268 		return (1);
    269 	}
    270 
    271 	sc->sc_calibrated =
    272 	    tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
    273 		(caddr_t)cs, 0, 0) == 0 ? 1 : 0;
    274 
    275 	if (!sc->sc_calibrated)
    276 		printf("not ");
    277 	printf("calibrated");
    278 
    279 	return (0);
    280 }
    281 
    282 int
    283 ucbtp_match(struct device *parent, struct cfdata *cf, void *aux)
    284 {
    285 
    286 	return (1);
    287 }
    288 
    289 void
    290 ucbtp_attach(struct device *parent, struct device *self, void *aux)
    291 {
    292 	struct ucb1200_attach_args *ucba = aux;
    293 	struct ucbtp_softc *sc = (void*)self;
    294 	struct wsmousedev_attach_args wsmaa;
    295 	tx_chipset_tag_t tc;
    296 
    297 	tc = sc->sc_tc = ucba->ucba_tc;
    298 	sc->sc_sib = ucba->ucba_sib;
    299 	sc->sc_ucb = ucba->ucba_ucb;
    300 
    301 	printf(": ");
    302 	/* touch panel interrupt */
    303 	tx_intr_establish(tc, MAKEINTR(1, TX39_INTRSTATUS1_SIBIRQPOSINT),
    304 	    IST_EDGE, IPL_TTY, ucbtp_sibintr, sc);
    305 
    306 	/* attempt to calibrate touch panel */
    307 	ucbtp_calibration(sc);
    308 #ifdef TX392X /* hack for Telios HC-VJ1C */
    309 	sc->sc_xy_reverse = 1;
    310 #endif
    311 
    312 	printf("\n");
    313 
    314 	wsmaa.accessops = &ucbtp_accessops;
    315 	wsmaa.accesscookie = sc;
    316 
    317 	ucb1200_state_install(parent, ucbtp_busy, self, UCB1200_TP_MODULE);
    318 
    319 	/*
    320 	 * attach the wsmouse
    321 	 */
    322 	sc->sc_wsmousedev = config_found(self, &wsmaa, wsmousedevprint);
    323 }
    324 
    325 int
    326 ucbtp_busy(void *arg)
    327 {
    328 	struct ucbtp_softc *sc = arg;
    329 
    330 	return (sc->sm_state != UCBADC_IDLE);
    331 }
    332 
    333 int
    334 ucbtp_poll(void *arg)
    335 {
    336 	struct ucbtp_softc *sc = arg;
    337 
    338 	if (!ucb1200_state_idle(sc->sc_ucb)) /* subframe0 busy */
    339 		return (POLL_CONT);
    340 
    341 	if (sc->sc_polling_finish) {
    342 		sc->sc_polling_finish = 0;
    343 		return (POLL_END);
    344 	}
    345 
    346 	/* execute A-D converter */
    347 	sc->sm_state = UCBADC_ADC_INIT;
    348 	ucbtp_adc_async(sc);
    349 
    350 	return (POLL_CONT);
    351 }
    352 
    353 int
    354 ucbtp_sibintr(void *arg)
    355 {
    356 	struct ucbtp_softc *sc = arg;
    357 
    358 	sc->sc_stat = UCBTS_STAT_TOUCH;
    359 
    360 	/* click! */
    361 	tx_sound_click(sc->sc_tc);
    362 
    363 	/* invoke touch panel polling */
    364 	if (!sc->sc_polling) {
    365 		sc->sc_pollh = tx39_poll_establish(sc->sc_tc, 1, IST_EDGE,
    366 		    ucbtp_poll, sc);
    367 		if (!sc->sc_pollh) {
    368 			printf("%s: can't poll\n", sc->sc_dev.dv_xname);
    369 		}
    370 	}
    371 
    372 	/* don't acknoledge interrupt until polling finish */
    373 
    374 	return (0);
    375 }
    376 
    377 #define REGWRITE(addr, reg, ret) (					\
    378 	sc->sm_addr = (addr),						\
    379 	sc->sm_reg = (reg),						\
    380 	sc->sm_returnstate = (ret),					\
    381 	sc->sm_state = UCBADC_REGWRITE)
    382 #define REGREAD(addr, ret) (						\
    383 	sc->sm_addr = (addr),						\
    384 	sc->sm_returnstate = (ret),					\
    385 	sc->sm_state = UCBADC_REGREAD)
    386 
    387 int
    388 ucbtp_adc_async(void *arg)
    389 {
    390 	struct ucbtp_softc *sc = arg;
    391 	tx_chipset_tag_t tc = sc->sc_tc;
    392 	txreg_t reg;
    393 	u_int16_t reg16;
    394 
    395 	DPRINTFN(9, ("state: %d\n", sc->sm_state));
    396 
    397 	switch (sc->sm_state) {
    398 	default:
    399 		panic("ucbtp_adc: invalid state %d", sc->sm_state);
    400 		/* NOTREACHED */
    401 		break;
    402 
    403 	case UCBADC_IDLE:
    404 		/* nothing to do */
    405 		break;
    406 
    407 	case UCBADC_ADC_INIT:
    408 		sc->sc_polling++;
    409 		sc->sc_stat = UCBTS_STAT_DRAG;
    410 		/* enable heart beat of this state machine */
    411 		sc->sm_ih = tx_intr_establish(
    412 			tc,
    413 			MAKEINTR(1, TX39_INTRSTATUS1_SIBSF0INT),
    414 			IST_EDGE, IPL_TTY, ucbtp_adc_async, sc);
    415 
    416 		sc->sm_state = UCBADC_MEASUMENT_INIT;
    417 		break;
    418 
    419 	case UCBADC_ADC_FINI:
    420 		/* disable heart beat of this state machine */
    421 		tx_intr_disestablish(tc, sc->sm_ih);
    422 		sc->sm_state = UCBADC_IDLE;
    423 		break;
    424 
    425 	case UCBADC_MEASUMENT_INIT:
    426 		switch (sc->sm_measurement) {
    427 		default:
    428 			panic("unknown measurement spec.");
    429 			/* NOTREACHED */
    430 			break;
    431 		case UCBADC_MEASUREMENT_X:
    432 			REGWRITE(UCB1200_TSCTRL_REG,
    433 			    UCB1200_TSCTRL_XPOSITION,
    434 			    UCBADC_ADC_ENABLE);
    435 			break;
    436 		case UCBADC_MEASUREMENT_Y:
    437 			REGWRITE(UCB1200_TSCTRL_REG,
    438 			    UCB1200_TSCTRL_YPOSITION,
    439 			    UCBADC_ADC_ENABLE);
    440 			break;
    441 		case UCBADC_MEASUREMENT_PRESSURE:
    442 			REGWRITE(UCB1200_TSCTRL_REG,
    443 			    UCB1200_TSCTRL_PRESSURE,
    444 			    UCBADC_ADC_ENABLE);
    445 			break;
    446 		}
    447 		break;
    448 
    449 	case UCBADC_MEASUMENT_FINI:
    450 		switch (sc->sm_measurement) {
    451 		case UCBADC_MEASUREMENT_X:
    452 			sc->sm_measurement = UCBADC_MEASUREMENT_Y;
    453 			sc->sm_state = UCBADC_MEASUMENT_INIT;
    454 			break;
    455 		case UCBADC_MEASUREMENT_Y:
    456 			sc->sm_measurement = UCBADC_MEASUREMENT_PRESSURE;
    457 			sc->sm_state = UCBADC_MEASUMENT_INIT;
    458 			break;
    459 		case UCBADC_MEASUREMENT_PRESSURE:
    460 			sc->sm_measurement = UCBADC_MEASUREMENT_X;
    461 			/* measument complete. pass down to wsmouse_input */
    462 			sc->sm_state = UCBADC_ADC_INPUT;
    463 			break;
    464 		}
    465 		break;
    466 
    467 	case UCBADC_ADC_ENABLE:
    468 		switch (sc->sm_measurement) {
    469 		case UCBADC_MEASUREMENT_PRESSURE:
    470 			/* FALLTHROUGH */
    471 		case UCBADC_MEASUREMENT_X:
    472 			sc->sm_tmpreg = UCB1200_ADCCTRL_INPUT_SET(
    473 				UCB1200_ADCCTRL_ENABLE,
    474 				UCB1200_ADCCTRL_INPUT_TSPX);
    475 			REGWRITE(UCB1200_ADCCTRL_REG, sc->sm_tmpreg,
    476 			    UCBADC_ADC_START0);
    477 			break;
    478 		case UCBADC_MEASUREMENT_Y:
    479 			sc->sm_tmpreg = UCB1200_ADCCTRL_INPUT_SET(
    480 				UCB1200_ADCCTRL_ENABLE,
    481 				UCB1200_ADCCTRL_INPUT_TSPY);
    482 			REGWRITE(UCB1200_ADCCTRL_REG, sc->sm_tmpreg,
    483 			    UCBADC_ADC_START0);
    484 			break;
    485 		}
    486 		break;
    487 
    488 	case UCBADC_ADC_START0:
    489 		REGWRITE(UCB1200_ADCCTRL_REG,
    490 		    sc->sm_tmpreg | UCB1200_ADCCTRL_START,
    491 		    UCBADC_ADC_START1);
    492 		break;
    493 
    494 	case UCBADC_ADC_START1:
    495 		REGWRITE(UCB1200_ADCCTRL_REG,
    496 		    sc->sm_tmpreg,
    497 		    UCBADC_ADC_DATAREAD);
    498 		sc->sm_retry = UCBADC_RETRY_DEFAULT;
    499 		break;
    500 
    501 	case UCBADC_ADC_DATAREAD:
    502 		REGREAD(UCB1200_ADCDATA_REG, UCBADC_ADC_DATAREAD_WAIT);
    503 		break;
    504 
    505 	case UCBADC_ADC_DATAREAD_WAIT:
    506 		reg16 = TX39_SIBSF0_REGDATA(sc->sm_reg);
    507 		if (!(reg16 & UCB1200_ADCDATA_INPROGRESS) &&
    508 		    --sc->sm_retry > 0) {
    509 			sc->sm_state = UCBADC_ADC_DATAREAD;
    510 		} else {
    511 			if (sc->sm_retry <= 0) {
    512 				printf("dataread failed\n");
    513 				sc->sm_state = UCBADC_ADC_FINI;
    514 				break;
    515 			}
    516 
    517 			switch (sc->sm_measurement) {
    518 			case UCBADC_MEASUREMENT_X:
    519 				sc->sc_x = UCB1200_ADCDATA(reg16);
    520 				DPRINTFN(9, ("x=%d\n", sc->sc_x));
    521 				break;
    522 			case UCBADC_MEASUREMENT_Y:
    523 				sc->sc_y = UCB1200_ADCDATA(reg16);
    524 				DPRINTFN(9, ("y=%d\n", sc->sc_y));
    525 				break;
    526 			case UCBADC_MEASUREMENT_PRESSURE:
    527 				sc->sc_p = UCB1200_ADCDATA(reg16);
    528 				DPRINTFN(9, ("p=%d\n", sc->sc_p));
    529 				break;
    530 			}
    531 
    532 			sc->sm_state = UCBADC_ADC_DISABLE;
    533 		}
    534 
    535 		break;
    536 
    537 	case UCBADC_ADC_DISABLE:
    538 		REGWRITE(UCB1200_ADCCTRL_REG, 0, UCBADC_ADC_INTRMODE);
    539 
    540 		break;
    541 	case UCBADC_ADC_INTRMODE:
    542 		REGWRITE(UCB1200_TSCTRL_REG, UCB1200_TSCTRL_INTERRUPT,
    543 		    UCBADC_MEASUMENT_FINI);
    544 		break;
    545 
    546 	case UCBADC_ADC_INPUT:
    547 		if (ucbtp_input(sc) == 0)
    548 			sc->sm_state = UCBADC_ADC_FINI;
    549 		else
    550 			sc->sm_state = UCBADC_INTR_ACK0;
    551 		break;
    552 
    553 	case UCBADC_INTR_ACK0:
    554 		REGREAD(UCB1200_INTSTAT_REG, UCBADC_INTR_ACK1);
    555 		break;
    556 
    557 	case UCBADC_INTR_ACK1:
    558 		REGWRITE(UCB1200_INTSTAT_REG, sc->sm_reg, UCBADC_INTR_ACK2);
    559 		break;
    560 
    561 	case UCBADC_INTR_ACK2:
    562 		sc->sc_polling_finish = 1;
    563 		REGWRITE(UCB1200_INTSTAT_REG, 0, UCBADC_ADC_FINI);
    564 		break;
    565 
    566 		/*
    567 		 * UCB1200 register access state
    568 		 */
    569 	case UCBADC_REGREAD:
    570 		/*
    571 		 * In	: sc->sm_addr
    572 		 * Out	: sc->sm_reg  (with SIBtag)
    573 		 */
    574 #define TXSIB_REGREAD_INIT	0
    575 #define TXSIB_REGREAD_READ	1
    576 		switch (sc->sm_read_state) {
    577 		case TXSIB_REGREAD_INIT:
    578 			reg = TX39_SIBSF0_REGADDR_SET(0, sc->sm_addr);
    579 			tx_conf_write(tc, TX39_SIBSF0CTRL_REG, reg);
    580 			sc->sm_rw_retry = UCBADC_RETRY_DEFAULT;
    581 			sc->sm_read_state = TXSIB_REGREAD_READ;
    582 			break;
    583 		case TXSIB_REGREAD_READ:
    584 			reg = tx_conf_read(tc, TX39_SIBSF0STAT_REG);
    585 			if ((TX39_SIBSF0_REGADDR(reg) != sc->sm_addr) &&
    586 			    --sc->sm_rw_retry > 0) {
    587 				break;
    588 			}
    589 
    590 			if (sc->sm_rw_retry <= 0) {
    591 				printf("sf0read: command failed\n");
    592 				sc->sm_state = UCBADC_ADC_FINI;
    593 			} else {
    594 				sc->sm_reg = reg;
    595 				sc->sm_read_state = TXSIB_REGREAD_INIT;
    596 				DPRINTFN(9, ("%08x\n", reg));
    597 				if (sc->sm_writing)
    598 					sc->sm_state = UCBADC_REGWRITE;
    599 				else
    600 					sc->sm_state = sc->sm_returnstate;
    601 			}
    602 			break;
    603 		}
    604 		break;
    605 
    606 	case UCBADC_REGWRITE:
    607 		/*
    608 		 * In	: sc->sm_addr, sc->sm_reg (lower 16bit only)
    609 		 */
    610 #define TXSIB_REGWRITE_INIT	0
    611 #define TXSIB_REGWRITE_WRITE	1
    612 		switch (sc->sm_write_state) {
    613 		case TXSIB_REGWRITE_INIT:
    614 			sc->sm_writing = 1;
    615 			sc->sm_write_state = TXSIB_REGWRITE_WRITE;
    616 			sc->sm_state = UCBADC_REGREAD;
    617 
    618 			sc->sm_write_val = sc->sm_reg;
    619 			break;
    620 		case TXSIB_REGWRITE_WRITE:
    621 			sc->sm_writing = 0;
    622 			sc->sm_write_state = TXSIB_REGWRITE_INIT;
    623 			sc->sm_state = sc->sm_returnstate;
    624 
    625 			reg = sc->sm_reg;
    626 			reg |= TX39_SIBSF0_WRITE;
    627 			TX39_SIBSF0_REGDATA_CLR(reg);
    628 			reg = TX39_SIBSF0_REGDATA_SET(reg, sc->sm_write_val);
    629 			tx_conf_write(tc, TX39_SIBSF0CTRL_REG, reg);
    630 			break;
    631 		}
    632 		break;
    633 	}
    634 
    635 	return (0);
    636 }
    637 
    638 int
    639 ucbtp_input(struct ucbtp_softc *sc)
    640 {
    641 	int rx, ry, x, y, p;
    642 
    643 	rx = sc->sc_x;
    644 	ry = sc->sc_y;
    645 	p = sc->sc_p;
    646 
    647 	if (!sc->sc_calibrated) {
    648 		DPRINTFN(2, ("x=%4d y=%4d p=%4d\n", rx, ry, p));
    649 		DPRINTF(("ucbtp_input: no calibration data\n"));
    650 	}
    651 
    652 	if (p < UCBTS_PRESS_THRESHOLD || rx == 0x3ff || ry == 0x3ff ||
    653 	    rx == 0 || ry == 0) {
    654 		sc->sc_stat = UCBTS_STAT_RELEASE;
    655 		if (sc->sc_polling < UCBTS_TAP_THRESHOLD) {
    656 			DPRINTFN(2, ("TAP!\n"));
    657 			/* button 0 DOWN */
    658 			wsmouse_input(sc->sc_wsmousedev, 1, 0, 0, 0, 0);
    659 			/* button 0 UP */
    660 			wsmouse_input(sc->sc_wsmousedev, 0, 0, 0, 0, 0);
    661 		} else {
    662 			wsmouse_input(sc->sc_wsmousedev, 0,
    663 			    sc->sc_ox, sc->sc_oy, 0,
    664 			    WSMOUSE_INPUT_ABSOLUTE_X |
    665 			    WSMOUSE_INPUT_ABSOLUTE_Y);
    666 
    667 			DPRINTFN(2, ("RELEASE\n"));
    668 		}
    669 		sc->sc_polling = 0;
    670 
    671 		return (1);
    672 	}
    673 
    674 	if (sc->sc_xy_reverse)
    675 		tpcalib_trans(&sc->sc_tpcalib, ry, rx, &x, &y);
    676 	else
    677 		tpcalib_trans(&sc->sc_tpcalib, rx, ry, &x, &y);
    678 
    679 	DPRINTFN(2, ("x: %4d->%4d y: %4d->%4d pressure=%4d\n",
    680 	    rx, x, ry, y, p));
    681 
    682 	/* debug draw */
    683 	if (sc->sc_tc->tc_videot) {
    684 		if (sc->sc_polling == 1)
    685 			video_dot(sc->sc_tc->tc_videot, x, y);
    686 		else
    687 			video_line(sc->sc_tc->tc_videot, sc->sc_ox,
    688 			    sc->sc_oy, x, y);
    689 	}
    690 
    691 	sc->sc_ox = x, sc->sc_oy = y;
    692 
    693 	wsmouse_input(sc->sc_wsmousedev, 1, x, y, 0,
    694 	    WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y);
    695 
    696 	return (0);
    697 }
    698 
    699 /*
    700  * access ops.
    701  */
    702 
    703 int
    704 ucbtp_enable(void *v)
    705 {
    706 	/* not yet */
    707 	return (0);
    708 }
    709 
    710 void
    711 ucbtp_disable(void *v)
    712 {
    713 	/* not yet */
    714 }
    715 
    716 int
    717 ucbtp_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p)
    718 {
    719 	struct ucbtp_softc *sc = v;
    720 
    721 	DPRINTF(("%s(%d): ucbtp_ioctl(%08lx)\n", __FILE__, __LINE__, cmd));
    722 
    723 	switch (cmd) {
    724 	case WSMOUSEIO_GTYPE:
    725 		*(u_int *)data = WSMOUSE_TYPE_TPANEL;
    726 		break;
    727 
    728 	case WSMOUSEIO_SRES:
    729 		printf("%s(%d): WSMOUSRIO_SRES is not supported",
    730 		    __FILE__, __LINE__);
    731 		break;
    732 
    733 	case WSMOUSEIO_SCALIBCOORDS:
    734 	case WSMOUSEIO_GCALIBCOORDS:
    735                 return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, p);
    736 
    737 	default:
    738 		return (EPASSTHROUGH);
    739 	}
    740 
    741 	return (0);
    742 }
    743