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ucbtp.c revision 1.10
      1 /*	$NetBSD: ucbtp.c,v 1.10 2002/10/02 05:26:47 thorpej 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 CFATTACH_DECL(ucbtp, sizeof(struct ucbtp_softc),
    175     ucbtp_match, ucbtp_attach, NULL, NULL);
    176 
    177 const struct wsmouse_accessops ucbtp_accessops = {
    178 	ucbtp_enable,
    179 	ucbtp_ioctl,
    180 	ucbtp_disable,
    181 };
    182 
    183 /*
    184  * XXX currently no calibration method. this is temporary hack.
    185  */
    186 #include <machine/platid.h>
    187 
    188 struct	wsmouse_calibcoords *calibration_sample_lookup(void);
    189 int	ucbtp_calibration(struct ucbtp_softc *);
    190 
    191 struct calibration_sample_table {
    192 	platid_t	cst_platform;
    193 	struct wsmouse_calibcoords cst_sample;
    194 } calibration_sample_table[] = {
    195 	{{{PLATID_WILD, PLATID_MACH_COMPAQ_C_8XX}},  /* uch machine */
    196 	 { 0, 0, 639, 239, 5,
    197 	   {{ 507, 510, 320, 120 },
    198 	    { 898, 757,  40,  40 },
    199 	    { 900, 255,  40, 200 },
    200 	    { 109, 249, 600, 200 },
    201 	    { 110, 753, 600,  40 }}}},
    202 
    203 	{{{PLATID_WILD, PLATID_MACH_COMPAQ_C_2010}}, /* uch machine */
    204 	 { 0, 0, 639, 239, 5,
    205 	   {{ 506, 487, 320, 120 },
    206 	    { 880, 250,  40,  40 },
    207 	    { 880, 718,  40, 200 },
    208 	    { 140, 726, 600, 200 },
    209 	    { 137, 250, 600,  40 }}}},
    210 
    211 	{{{PLATID_WILD, PLATID_MACH_SHARP_MOBILON_HC4100}}, /* uch machine */
    212 	 { 0, 0, 639, 239, 5,
    213 	   {{ 497, 501, 320, 120 },
    214 	    { 752, 893,  40,  40 },
    215 	    { 242, 891,  40, 200 },
    216 	    { 241, 115, 600, 200 },
    217 	    { 747, 101, 600,  40 }}}},
    218 
    219 	{{{PLATID_WILD, PLATID_MACH_SHARP_TELIOS_HCAJ1}}, /* uch machine */
    220 	 { 0, 0, 799, 479, 5,
    221 	   {{ 850, 150,   1,   1 },
    222 	    { 850, 880,   1, 479 },
    223 	    { 850, 880,   1, 479 },
    224 	    {  85, 880, 799, 479 },
    225 	    {  85, 150, 799,   1 }}}},
    226 
    227 	{{{PLATID_UNKNOWN, PLATID_UNKNOWN}},
    228 	 { 0, 0, 639, 239, 5,
    229 	   {{0, 0, 0, 0},
    230 	    {0, 0, 0, 0},
    231 	    {0, 0, 0, 0},
    232 	    {0, 0, 0, 0},
    233 	    {0, 0, 0, 0}}}},
    234 };
    235 
    236 struct wsmouse_calibcoords *
    237 calibration_sample_lookup()
    238 {
    239 	struct calibration_sample_table *tab;
    240 	platid_mask_t mask;
    241 
    242 	for (tab = calibration_sample_table;
    243 	    tab->cst_platform.dw.dw1 != PLATID_UNKNOWN; tab++) {
    244 
    245 		mask = PLATID_DEREF(&tab->cst_platform);
    246 
    247 		if (platid_match(&platid, &mask)) {
    248 			return (&tab->cst_sample);
    249 		}
    250 	}
    251 
    252 	return (0);
    253 }
    254 
    255 int
    256 ucbtp_calibration(struct ucbtp_softc *sc)
    257 {
    258 	struct wsmouse_calibcoords *cs;
    259 
    260 	if (sc->sc_tc->tc_videot)
    261 		video_calibration_pattern(sc->sc_tc->tc_videot); /* debug */
    262 
    263 	tpcalib_init(&sc->sc_tpcalib);
    264 
    265 	if (!(cs = calibration_sample_lookup())) {
    266 		DPRINTF(("no calibration data"));
    267 		return (1);
    268 	}
    269 
    270 	sc->sc_calibrated =
    271 	    tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
    272 		(caddr_t)cs, 0, 0) == 0 ? 1 : 0;
    273 
    274 	if (!sc->sc_calibrated)
    275 		printf("not ");
    276 	printf("calibrated");
    277 
    278 	return (0);
    279 }
    280 
    281 int
    282 ucbtp_match(struct device *parent, struct cfdata *cf, void *aux)
    283 {
    284 
    285 	return (1);
    286 }
    287 
    288 void
    289 ucbtp_attach(struct device *parent, struct device *self, void *aux)
    290 {
    291 	struct ucb1200_attach_args *ucba = aux;
    292 	struct ucbtp_softc *sc = (void*)self;
    293 	struct wsmousedev_attach_args wsmaa;
    294 	tx_chipset_tag_t tc;
    295 
    296 	tc = sc->sc_tc = ucba->ucba_tc;
    297 	sc->sc_sib = ucba->ucba_sib;
    298 	sc->sc_ucb = ucba->ucba_ucb;
    299 
    300 	printf(": ");
    301 	/* touch panel interrupt */
    302 	tx_intr_establish(tc, MAKEINTR(1, TX39_INTRSTATUS1_SIBIRQPOSINT),
    303 	    IST_EDGE, IPL_TTY, ucbtp_sibintr, sc);
    304 
    305 	/* attempt to calibrate touch panel */
    306 	ucbtp_calibration(sc);
    307 #ifdef TX392X /* hack for Telios HC-VJ1C */
    308 	sc->sc_xy_reverse = 1;
    309 #endif
    310 
    311 	printf("\n");
    312 
    313 	wsmaa.accessops = &ucbtp_accessops;
    314 	wsmaa.accesscookie = sc;
    315 
    316 	ucb1200_state_install(parent, ucbtp_busy, self, UCB1200_TP_MODULE);
    317 
    318 	/*
    319 	 * attach the wsmouse
    320 	 */
    321 	sc->sc_wsmousedev = config_found(self, &wsmaa, wsmousedevprint);
    322 }
    323 
    324 int
    325 ucbtp_busy(void *arg)
    326 {
    327 	struct ucbtp_softc *sc = arg;
    328 
    329 	return (sc->sm_state != UCBADC_IDLE);
    330 }
    331 
    332 int
    333 ucbtp_poll(void *arg)
    334 {
    335 	struct ucbtp_softc *sc = arg;
    336 
    337 	if (!ucb1200_state_idle(sc->sc_ucb)) /* subframe0 busy */
    338 		return (POLL_CONT);
    339 
    340 	if (sc->sc_polling_finish) {
    341 		sc->sc_polling_finish = 0;
    342 		return (POLL_END);
    343 	}
    344 
    345 	/* execute A-D converter */
    346 	sc->sm_state = UCBADC_ADC_INIT;
    347 	ucbtp_adc_async(sc);
    348 
    349 	return (POLL_CONT);
    350 }
    351 
    352 int
    353 ucbtp_sibintr(void *arg)
    354 {
    355 	struct ucbtp_softc *sc = arg;
    356 
    357 	sc->sc_stat = UCBTS_STAT_TOUCH;
    358 
    359 	/* click! */
    360 	tx_sound_click(sc->sc_tc);
    361 
    362 	/* invoke touch panel polling */
    363 	if (!sc->sc_polling) {
    364 		sc->sc_pollh = tx39_poll_establish(sc->sc_tc, 1, IST_EDGE,
    365 		    ucbtp_poll, sc);
    366 		if (!sc->sc_pollh) {
    367 			printf("%s: can't poll\n", sc->sc_dev.dv_xname);
    368 		}
    369 	}
    370 
    371 	/* don't acknoledge interrupt until polling finish */
    372 
    373 	return (0);
    374 }
    375 
    376 #define REGWRITE(addr, reg, ret) (					\
    377 	sc->sm_addr = (addr),						\
    378 	sc->sm_reg = (reg),						\
    379 	sc->sm_returnstate = (ret),					\
    380 	sc->sm_state = UCBADC_REGWRITE)
    381 #define REGREAD(addr, ret) (						\
    382 	sc->sm_addr = (addr),						\
    383 	sc->sm_returnstate = (ret),					\
    384 	sc->sm_state = UCBADC_REGREAD)
    385 
    386 int
    387 ucbtp_adc_async(void *arg)
    388 {
    389 	struct ucbtp_softc *sc = arg;
    390 	tx_chipset_tag_t tc = sc->sc_tc;
    391 	txreg_t reg;
    392 	u_int16_t reg16;
    393 
    394 	DPRINTFN(9, ("state: %d\n", sc->sm_state));
    395 
    396 	switch (sc->sm_state) {
    397 	default:
    398 		panic("ucbtp_adc: invalid state %d", sc->sm_state);
    399 		/* NOTREACHED */
    400 		break;
    401 
    402 	case UCBADC_IDLE:
    403 		/* nothing to do */
    404 		break;
    405 
    406 	case UCBADC_ADC_INIT:
    407 		sc->sc_polling++;
    408 		sc->sc_stat = UCBTS_STAT_DRAG;
    409 		/* enable heart beat of this state machine */
    410 		sc->sm_ih = tx_intr_establish(
    411 			tc,
    412 			MAKEINTR(1, TX39_INTRSTATUS1_SIBSF0INT),
    413 			IST_EDGE, IPL_TTY, ucbtp_adc_async, sc);
    414 
    415 		sc->sm_state = UCBADC_MEASUMENT_INIT;
    416 		break;
    417 
    418 	case UCBADC_ADC_FINI:
    419 		/* disable heart beat of this state machine */
    420 		tx_intr_disestablish(tc, sc->sm_ih);
    421 		sc->sm_state = UCBADC_IDLE;
    422 		break;
    423 
    424 	case UCBADC_MEASUMENT_INIT:
    425 		switch (sc->sm_measurement) {
    426 		default:
    427 			panic("unknown measurement spec.");
    428 			/* NOTREACHED */
    429 			break;
    430 		case UCBADC_MEASUREMENT_X:
    431 			REGWRITE(UCB1200_TSCTRL_REG,
    432 			    UCB1200_TSCTRL_XPOSITION,
    433 			    UCBADC_ADC_ENABLE);
    434 			break;
    435 		case UCBADC_MEASUREMENT_Y:
    436 			REGWRITE(UCB1200_TSCTRL_REG,
    437 			    UCB1200_TSCTRL_YPOSITION,
    438 			    UCBADC_ADC_ENABLE);
    439 			break;
    440 		case UCBADC_MEASUREMENT_PRESSURE:
    441 			REGWRITE(UCB1200_TSCTRL_REG,
    442 			    UCB1200_TSCTRL_PRESSURE,
    443 			    UCBADC_ADC_ENABLE);
    444 			break;
    445 		}
    446 		break;
    447 
    448 	case UCBADC_MEASUMENT_FINI:
    449 		switch (sc->sm_measurement) {
    450 		case UCBADC_MEASUREMENT_X:
    451 			sc->sm_measurement = UCBADC_MEASUREMENT_Y;
    452 			sc->sm_state = UCBADC_MEASUMENT_INIT;
    453 			break;
    454 		case UCBADC_MEASUREMENT_Y:
    455 			sc->sm_measurement = UCBADC_MEASUREMENT_PRESSURE;
    456 			sc->sm_state = UCBADC_MEASUMENT_INIT;
    457 			break;
    458 		case UCBADC_MEASUREMENT_PRESSURE:
    459 			sc->sm_measurement = UCBADC_MEASUREMENT_X;
    460 			/* measument complete. pass down to wsmouse_input */
    461 			sc->sm_state = UCBADC_ADC_INPUT;
    462 			break;
    463 		}
    464 		break;
    465 
    466 	case UCBADC_ADC_ENABLE:
    467 		switch (sc->sm_measurement) {
    468 		case UCBADC_MEASUREMENT_PRESSURE:
    469 			/* FALLTHROUGH */
    470 		case UCBADC_MEASUREMENT_X:
    471 			sc->sm_tmpreg = UCB1200_ADCCTRL_INPUT_SET(
    472 				UCB1200_ADCCTRL_ENABLE,
    473 				UCB1200_ADCCTRL_INPUT_TSPX);
    474 			REGWRITE(UCB1200_ADCCTRL_REG, sc->sm_tmpreg,
    475 			    UCBADC_ADC_START0);
    476 			break;
    477 		case UCBADC_MEASUREMENT_Y:
    478 			sc->sm_tmpreg = UCB1200_ADCCTRL_INPUT_SET(
    479 				UCB1200_ADCCTRL_ENABLE,
    480 				UCB1200_ADCCTRL_INPUT_TSPY);
    481 			REGWRITE(UCB1200_ADCCTRL_REG, sc->sm_tmpreg,
    482 			    UCBADC_ADC_START0);
    483 			break;
    484 		}
    485 		break;
    486 
    487 	case UCBADC_ADC_START0:
    488 		REGWRITE(UCB1200_ADCCTRL_REG,
    489 		    sc->sm_tmpreg | UCB1200_ADCCTRL_START,
    490 		    UCBADC_ADC_START1);
    491 		break;
    492 
    493 	case UCBADC_ADC_START1:
    494 		REGWRITE(UCB1200_ADCCTRL_REG,
    495 		    sc->sm_tmpreg,
    496 		    UCBADC_ADC_DATAREAD);
    497 		sc->sm_retry = UCBADC_RETRY_DEFAULT;
    498 		break;
    499 
    500 	case UCBADC_ADC_DATAREAD:
    501 		REGREAD(UCB1200_ADCDATA_REG, UCBADC_ADC_DATAREAD_WAIT);
    502 		break;
    503 
    504 	case UCBADC_ADC_DATAREAD_WAIT:
    505 		reg16 = TX39_SIBSF0_REGDATA(sc->sm_reg);
    506 		if (!(reg16 & UCB1200_ADCDATA_INPROGRESS) &&
    507 		    --sc->sm_retry > 0) {
    508 			sc->sm_state = UCBADC_ADC_DATAREAD;
    509 		} else {
    510 			if (sc->sm_retry <= 0) {
    511 				printf("dataread failed\n");
    512 				sc->sm_state = UCBADC_ADC_FINI;
    513 				break;
    514 			}
    515 
    516 			switch (sc->sm_measurement) {
    517 			case UCBADC_MEASUREMENT_X:
    518 				sc->sc_x = UCB1200_ADCDATA(reg16);
    519 				DPRINTFN(9, ("x=%d\n", sc->sc_x));
    520 				break;
    521 			case UCBADC_MEASUREMENT_Y:
    522 				sc->sc_y = UCB1200_ADCDATA(reg16);
    523 				DPRINTFN(9, ("y=%d\n", sc->sc_y));
    524 				break;
    525 			case UCBADC_MEASUREMENT_PRESSURE:
    526 				sc->sc_p = UCB1200_ADCDATA(reg16);
    527 				DPRINTFN(9, ("p=%d\n", sc->sc_p));
    528 				break;
    529 			}
    530 
    531 			sc->sm_state = UCBADC_ADC_DISABLE;
    532 		}
    533 
    534 		break;
    535 
    536 	case UCBADC_ADC_DISABLE:
    537 		REGWRITE(UCB1200_ADCCTRL_REG, 0, UCBADC_ADC_INTRMODE);
    538 
    539 		break;
    540 	case UCBADC_ADC_INTRMODE:
    541 		REGWRITE(UCB1200_TSCTRL_REG, UCB1200_TSCTRL_INTERRUPT,
    542 		    UCBADC_MEASUMENT_FINI);
    543 		break;
    544 
    545 	case UCBADC_ADC_INPUT:
    546 		if (ucbtp_input(sc) == 0)
    547 			sc->sm_state = UCBADC_ADC_FINI;
    548 		else
    549 			sc->sm_state = UCBADC_INTR_ACK0;
    550 		break;
    551 
    552 	case UCBADC_INTR_ACK0:
    553 		REGREAD(UCB1200_INTSTAT_REG, UCBADC_INTR_ACK1);
    554 		break;
    555 
    556 	case UCBADC_INTR_ACK1:
    557 		REGWRITE(UCB1200_INTSTAT_REG, sc->sm_reg, UCBADC_INTR_ACK2);
    558 		break;
    559 
    560 	case UCBADC_INTR_ACK2:
    561 		sc->sc_polling_finish = 1;
    562 		REGWRITE(UCB1200_INTSTAT_REG, 0, UCBADC_ADC_FINI);
    563 		break;
    564 
    565 		/*
    566 		 * UCB1200 register access state
    567 		 */
    568 	case UCBADC_REGREAD:
    569 		/*
    570 		 * In	: sc->sm_addr
    571 		 * Out	: sc->sm_reg  (with SIBtag)
    572 		 */
    573 #define TXSIB_REGREAD_INIT	0
    574 #define TXSIB_REGREAD_READ	1
    575 		switch (sc->sm_read_state) {
    576 		case TXSIB_REGREAD_INIT:
    577 			reg = TX39_SIBSF0_REGADDR_SET(0, sc->sm_addr);
    578 			tx_conf_write(tc, TX39_SIBSF0CTRL_REG, reg);
    579 			sc->sm_rw_retry = UCBADC_RETRY_DEFAULT;
    580 			sc->sm_read_state = TXSIB_REGREAD_READ;
    581 			break;
    582 		case TXSIB_REGREAD_READ:
    583 			reg = tx_conf_read(tc, TX39_SIBSF0STAT_REG);
    584 			if ((TX39_SIBSF0_REGADDR(reg) != sc->sm_addr) &&
    585 			    --sc->sm_rw_retry > 0) {
    586 				break;
    587 			}
    588 
    589 			if (sc->sm_rw_retry <= 0) {
    590 				printf("sf0read: command failed\n");
    591 				sc->sm_state = UCBADC_ADC_FINI;
    592 			} else {
    593 				sc->sm_reg = reg;
    594 				sc->sm_read_state = TXSIB_REGREAD_INIT;
    595 				DPRINTFN(9, ("%08x\n", reg));
    596 				if (sc->sm_writing)
    597 					sc->sm_state = UCBADC_REGWRITE;
    598 				else
    599 					sc->sm_state = sc->sm_returnstate;
    600 			}
    601 			break;
    602 		}
    603 		break;
    604 
    605 	case UCBADC_REGWRITE:
    606 		/*
    607 		 * In	: sc->sm_addr, sc->sm_reg (lower 16bit only)
    608 		 */
    609 #define TXSIB_REGWRITE_INIT	0
    610 #define TXSIB_REGWRITE_WRITE	1
    611 		switch (sc->sm_write_state) {
    612 		case TXSIB_REGWRITE_INIT:
    613 			sc->sm_writing = 1;
    614 			sc->sm_write_state = TXSIB_REGWRITE_WRITE;
    615 			sc->sm_state = UCBADC_REGREAD;
    616 
    617 			sc->sm_write_val = sc->sm_reg;
    618 			break;
    619 		case TXSIB_REGWRITE_WRITE:
    620 			sc->sm_writing = 0;
    621 			sc->sm_write_state = TXSIB_REGWRITE_INIT;
    622 			sc->sm_state = sc->sm_returnstate;
    623 
    624 			reg = sc->sm_reg;
    625 			reg |= TX39_SIBSF0_WRITE;
    626 			TX39_SIBSF0_REGDATA_CLR(reg);
    627 			reg = TX39_SIBSF0_REGDATA_SET(reg, sc->sm_write_val);
    628 			tx_conf_write(tc, TX39_SIBSF0CTRL_REG, reg);
    629 			break;
    630 		}
    631 		break;
    632 	}
    633 
    634 	return (0);
    635 }
    636 
    637 int
    638 ucbtp_input(struct ucbtp_softc *sc)
    639 {
    640 	int rx, ry, x, y, p;
    641 
    642 	rx = sc->sc_x;
    643 	ry = sc->sc_y;
    644 	p = sc->sc_p;
    645 
    646 	if (!sc->sc_calibrated) {
    647 		DPRINTFN(2, ("x=%4d y=%4d p=%4d\n", rx, ry, p));
    648 		DPRINTF(("ucbtp_input: no calibration data\n"));
    649 	}
    650 
    651 	if (p < UCBTS_PRESS_THRESHOLD || rx == 0x3ff || ry == 0x3ff ||
    652 	    rx == 0 || ry == 0) {
    653 		sc->sc_stat = UCBTS_STAT_RELEASE;
    654 		if (sc->sc_polling < UCBTS_TAP_THRESHOLD) {
    655 			DPRINTFN(2, ("TAP!\n"));
    656 			/* button 0 DOWN */
    657 			wsmouse_input(sc->sc_wsmousedev, 1, 0, 0, 0, 0);
    658 			/* button 0 UP */
    659 			wsmouse_input(sc->sc_wsmousedev, 0, 0, 0, 0, 0);
    660 		} else {
    661 			wsmouse_input(sc->sc_wsmousedev, 0,
    662 			    sc->sc_ox, sc->sc_oy, 0,
    663 			    WSMOUSE_INPUT_ABSOLUTE_X |
    664 			    WSMOUSE_INPUT_ABSOLUTE_Y);
    665 
    666 			DPRINTFN(2, ("RELEASE\n"));
    667 		}
    668 		sc->sc_polling = 0;
    669 
    670 		return (1);
    671 	}
    672 
    673 	if (sc->sc_xy_reverse)
    674 		tpcalib_trans(&sc->sc_tpcalib, ry, rx, &x, &y);
    675 	else
    676 		tpcalib_trans(&sc->sc_tpcalib, rx, ry, &x, &y);
    677 
    678 	DPRINTFN(2, ("x: %4d->%4d y: %4d->%4d pressure=%4d\n",
    679 	    rx, x, ry, y, p));
    680 
    681 	/* debug draw */
    682 	if (sc->sc_tc->tc_videot) {
    683 		if (sc->sc_polling == 1)
    684 			video_dot(sc->sc_tc->tc_videot, x, y);
    685 		else
    686 			video_line(sc->sc_tc->tc_videot, sc->sc_ox,
    687 			    sc->sc_oy, x, y);
    688 	}
    689 
    690 	sc->sc_ox = x, sc->sc_oy = y;
    691 
    692 	wsmouse_input(sc->sc_wsmousedev, 1, x, y, 0,
    693 	    WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y);
    694 
    695 	return (0);
    696 }
    697 
    698 /*
    699  * access ops.
    700  */
    701 
    702 int
    703 ucbtp_enable(void *v)
    704 {
    705 	/* not yet */
    706 	return (0);
    707 }
    708 
    709 void
    710 ucbtp_disable(void *v)
    711 {
    712 	/* not yet */
    713 }
    714 
    715 int
    716 ucbtp_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p)
    717 {
    718 	struct ucbtp_softc *sc = v;
    719 
    720 	DPRINTF(("%s(%d): ucbtp_ioctl(%08lx)\n", __FILE__, __LINE__, cmd));
    721 
    722 	switch (cmd) {
    723 	case WSMOUSEIO_GTYPE:
    724 		*(u_int *)data = WSMOUSE_TYPE_TPANEL;
    725 		break;
    726 
    727 	case WSMOUSEIO_SRES:
    728 		printf("%s(%d): WSMOUSRIO_SRES is not supported",
    729 		    __FILE__, __LINE__);
    730 		break;
    731 
    732 	case WSMOUSEIO_SCALIBCOORDS:
    733 	case WSMOUSEIO_GCALIBCOORDS:
    734                 return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, p);
    735 
    736 	default:
    737 		return (EPASSTHROUGH);
    738 	}
    739 
    740 	return (0);
    741 }
    742