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ucbtp.c revision 1.19
      1 /*	$NetBSD: ucbtp.c,v 1.19 2009/03/18 10:22:29 cegger 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  *
     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  * Device driver for PHILIPS UCB1200 Advanced modem/audio analog front-end
     34  *	Touch panel part.
     35  */
     36 
     37 #include <sys/cdefs.h>
     38 __KERNEL_RCSID(0, "$NetBSD: ucbtp.c,v 1.19 2009/03/18 10:22:29 cegger Exp $");
     39 
     40 #include "opt_use_poll.h"
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/device.h>
     45 
     46 #include <machine/bus.h>
     47 #include <machine/intr.h>
     48 #include <machine/bootinfo.h> /* bootinfo */
     49 
     50 #include <dev/wscons/wsconsio.h>
     51 #include <dev/wscons/wsmousevar.h>
     52 
     53 #include <dev/hpc/hpctpanelvar.h>
     54 
     55 #include <hpcmips/tx/tx39var.h>
     56 #include <hpcmips/tx/tx39sibvar.h>
     57 #include <hpcmips/tx/tx39sibreg.h>
     58 #include <hpcmips/tx/tx39icureg.h>
     59 
     60 #include <hpcmips/dev/ucb1200var.h>
     61 #include <hpcmips/dev/ucb1200reg.h>
     62 
     63 #include <hpcmips/tx/txsnd.h>
     64 #include <dev/hpc/video_subr.h> /* debug */
     65 
     66 #ifdef UCBTPDEBUG
     67 int	ucbtp_debug = 0;
     68 #define	DPRINTF(arg) if (ucbtp_debug) printf arg;
     69 #define	DPRINTFN(n, arg) if (ucbtp_debug > (n)) printf arg;
     70 #else
     71 #define	DPRINTF(arg)
     72 #define DPRINTFN(n, arg)
     73 #endif
     74 
     75 enum ucbts_stat {
     76 	UCBTS_STAT_DISABLE,
     77 	UCBTS_STAT_RELEASE,
     78 	UCBTS_STAT_TOUCH,
     79 	UCBTS_STAT_DRAG,
     80 };
     81 
     82 #define UCBTS_POSX	1
     83 #define UCBTS_POSY	2
     84 #define UCBTS_PRESS	3
     85 
     86 #define UCBTS_PRESS_THRESHOLD	80
     87 #define UCBTS_TAP_THRESHOLD	5
     88 
     89 enum ucbadc_state {
     90 /* 0 */	UCBADC_IDLE,
     91 /* 1 */	UCBADC_ADC_INIT,
     92 /* 2 */	UCBADC_ADC_FINI,
     93 /* 3 */	UCBADC_MEASUMENT_INIT,
     94 /* 4 */	UCBADC_MEASUMENT_FINI,
     95 /* 5 */	UCBADC_ADC_ENABLE,
     96 /* 6 */	UCBADC_ADC_START0,
     97 /* 7 */	UCBADC_ADC_START1,
     98 /* 8 */	UCBADC_ADC_DATAREAD,
     99 /* 9 */	UCBADC_ADC_DATAREAD_WAIT,
    100 /*10 */	UCBADC_ADC_DISABLE,
    101 /*11 */	UCBADC_ADC_INTRMODE,
    102 /*12 */	UCBADC_ADC_INPUT,
    103 /*13 */	UCBADC_INTR_ACK0,
    104 /*14 */	UCBADC_INTR_ACK1,
    105 /*15 */	UCBADC_INTR_ACK2,
    106 /*16 */	UCBADC_REGREAD,
    107 /*17 */	UCBADC_REGWRITE
    108 };
    109 
    110 struct ucbtp_softc {
    111 	struct device sc_dev;
    112 	struct device *sc_sib; /* parent (TX39 SIB module) */
    113 	struct device *sc_ucb; /* parent (UCB1200 module) */
    114 	tx_chipset_tag_t sc_tc;
    115 
    116 	enum ucbts_stat sc_stat;
    117 	int sc_polling;
    118 	int sc_polling_finish;
    119 	void *sc_pollh;
    120 
    121 	struct tpcalib_softc sc_tpcalib;
    122 	int sc_calibrated;
    123 
    124 	/* measurement value */
    125 	int sc_x, sc_y, sc_p;
    126 	int sc_ox, sc_oy;
    127 	int sc_xy_reverse; /* some platform pin connect interchanged */
    128 
    129 	/*
    130 	 * touch panel state machine
    131 	 */
    132 	void *sm_ih; /* TX39 SIB subframe 0 interrupt handler */
    133 
    134 	int sm_addr; /* UCB1200 register address */
    135 	u_int32_t sm_reg;  /* UCB1200 register data & TX39 SIB header */
    136 	int sm_tmpreg;
    137 #define UCBADC_RETRY_DEFAULT		200
    138 	int sm_retry; /* retry counter */
    139 
    140 	enum ucbadc_state sm_state;
    141 	int		sm_measurement; /* X, Y, Pressure */
    142 #define	UCBADC_MEASUREMENT_X		0
    143 #define	UCBADC_MEASUREMENT_Y		1
    144 #define	UCBADC_MEASUREMENT_PRESSURE	2
    145 	int sm_returnstate;
    146 
    147 	int sm_read_state, sm_write_state;
    148 	int sm_writing;	/* writing state flag */
    149 	u_int32_t sm_write_val;	/* temporary buffer */
    150 
    151 	int sm_rw_retry; /* retry counter for r/w */
    152 
    153 	/* wsmouse */
    154 	struct device *sc_wsmousedev;
    155 };
    156 
    157 int	ucbtp_match(struct device *, struct cfdata *, void *);
    158 void	ucbtp_attach(struct device *, struct device *, void *);
    159 
    160 int	ucbtp_sibintr(void *);
    161 int	ucbtp_poll(void *);
    162 int	ucbtp_adc_async(void *);
    163 int	ucbtp_input(struct ucbtp_softc *);
    164 int	ucbtp_busy(void *);
    165 
    166 int	ucbtp_enable(void *);
    167 int	ucbtp_ioctl(void *, u_long, void *, int, struct lwp *);
    168 void	ucbtp_disable(void *);
    169 
    170 CFATTACH_DECL(ucbtp, sizeof(struct ucbtp_softc),
    171     ucbtp_match, ucbtp_attach, NULL, NULL);
    172 
    173 const struct wsmouse_accessops ucbtp_accessops = {
    174 	ucbtp_enable,
    175 	ucbtp_ioctl,
    176 	ucbtp_disable,
    177 };
    178 
    179 /*
    180  * XXX currently no calibration method. this is temporary hack.
    181  */
    182 #include <machine/platid.h>
    183 
    184 struct	wsmouse_calibcoords *calibration_sample_lookup(void);
    185 int	ucbtp_calibration(struct ucbtp_softc *);
    186 
    187 struct calibration_sample_table {
    188 	platid_t	cst_platform;
    189 	struct wsmouse_calibcoords cst_sample;
    190 } calibration_sample_table[] = {
    191 	{{{PLATID_WILD, PLATID_MACH_COMPAQ_C_8XX}},  /* uch machine */
    192 	 { 0, 0, 639, 239, 5,
    193 	   {{ 507, 510, 320, 120 },
    194 	    { 898, 757,  40,  40 },
    195 	    { 900, 255,  40, 200 },
    196 	    { 109, 249, 600, 200 },
    197 	    { 110, 753, 600,  40 }}}},
    198 
    199 	{{{PLATID_WILD, PLATID_MACH_COMPAQ_C_2010}}, /* uch machine */
    200 	 { 0, 0, 639, 239, 5,
    201 	   {{ 506, 487, 320, 120 },
    202 	    { 880, 250,  40,  40 },
    203 	    { 880, 718,  40, 200 },
    204 	    { 140, 726, 600, 200 },
    205 	    { 137, 250, 600,  40 }}}},
    206 
    207 	{{{PLATID_WILD, PLATID_MACH_SHARP_MOBILON_HC4100}}, /* uch machine */
    208 	 { 0, 0, 639, 239, 5,
    209 	   {{ 497, 501, 320, 120 },
    210 	    { 752, 893,  40,  40 },
    211 	    { 242, 891,  40, 200 },
    212 	    { 241, 115, 600, 200 },
    213 	    { 747, 101, 600,  40 }}}},
    214 
    215 	{{{PLATID_WILD, PLATID_MACH_SHARP_TELIOS_HCVJ}}, /* uch machine */
    216 	 { 0, 0, 799, 479, 5,
    217 	   {{ 850, 150,   1,   1 },
    218 	    { 850, 880,   1, 479 },
    219 	    { 850, 880,   1, 479 },
    220 	    {  85, 880, 799, 479 },
    221 	    {  85, 150, 799,   1 }}}},
    222 
    223 	{{{PLATID_UNKNOWN, PLATID_UNKNOWN}},
    224 	 { 0, 0, 639, 239, 5,
    225 	   {{0, 0, 0, 0},
    226 	    {0, 0, 0, 0},
    227 	    {0, 0, 0, 0},
    228 	    {0, 0, 0, 0},
    229 	    {0, 0, 0, 0}}}},
    230 };
    231 
    232 struct wsmouse_calibcoords *
    233 calibration_sample_lookup(void)
    234 {
    235 	struct calibration_sample_table *tab;
    236 	platid_mask_t mask;
    237 
    238 	for (tab = calibration_sample_table;
    239 	    tab->cst_platform.dw.dw1 != PLATID_UNKNOWN; tab++) {
    240 
    241 		mask = PLATID_DEREF(&tab->cst_platform);
    242 
    243 		if (platid_match(&platid, &mask)) {
    244 			return (&tab->cst_sample);
    245 		}
    246 	}
    247 
    248 	return (0);
    249 }
    250 
    251 int
    252 ucbtp_calibration(struct ucbtp_softc *sc)
    253 {
    254 	struct wsmouse_calibcoords *cs;
    255 
    256 	if (sc->sc_tc->tc_videot)
    257 		video_calibration_pattern(sc->sc_tc->tc_videot); /* debug */
    258 
    259 	tpcalib_init(&sc->sc_tpcalib);
    260 
    261 	if (!(cs = calibration_sample_lookup())) {
    262 		DPRINTF(("no calibration data"));
    263 		return (1);
    264 	}
    265 
    266 	sc->sc_calibrated =
    267 	    tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
    268 		(void *)cs, 0, 0) == 0 ? 1 : 0;
    269 
    270 	if (!sc->sc_calibrated)
    271 		printf("not ");
    272 	printf("calibrated");
    273 
    274 	return (0);
    275 }
    276 
    277 int
    278 ucbtp_match(struct device *parent, struct cfdata *cf, void *aux)
    279 {
    280 
    281 	return (1);
    282 }
    283 
    284 void
    285 ucbtp_attach(struct device *parent, struct device *self, void *aux)
    286 {
    287 	struct ucb1200_attach_args *ucba = aux;
    288 	struct ucbtp_softc *sc = (void*)self;
    289 	struct wsmousedev_attach_args wsmaa;
    290 	tx_chipset_tag_t tc;
    291 
    292 	tc = sc->sc_tc = ucba->ucba_tc;
    293 	sc->sc_sib = ucba->ucba_sib;
    294 	sc->sc_ucb = ucba->ucba_ucb;
    295 
    296 	printf(": ");
    297 	/* touch panel interrupt */
    298 	tx_intr_establish(tc, MAKEINTR(1, TX39_INTRSTATUS1_SIBIRQPOSINT),
    299 	    IST_EDGE, IPL_TTY, ucbtp_sibintr, sc);
    300 
    301 	/* attempt to calibrate touch panel */
    302 	ucbtp_calibration(sc);
    303 #ifdef TX392X /* hack for Telios HC-VJ1C */
    304 	sc->sc_xy_reverse = 1;
    305 #endif
    306 
    307 	printf("\n");
    308 
    309 	wsmaa.accessops = &ucbtp_accessops;
    310 	wsmaa.accesscookie = sc;
    311 
    312 	ucb1200_state_install(parent, ucbtp_busy, self, UCB1200_TP_MODULE);
    313 
    314 	/*
    315 	 * attach the wsmouse
    316 	 */
    317 	sc->sc_wsmousedev = config_found(self, &wsmaa, wsmousedevprint);
    318 }
    319 
    320 int
    321 ucbtp_busy(void *arg)
    322 {
    323 	struct ucbtp_softc *sc = arg;
    324 
    325 	return (sc->sm_state != UCBADC_IDLE);
    326 }
    327 
    328 int
    329 ucbtp_poll(void *arg)
    330 {
    331 	struct ucbtp_softc *sc = arg;
    332 
    333 	if (!ucb1200_state_idle(sc->sc_ucb)) /* subframe0 busy */
    334 		return (POLL_CONT);
    335 
    336 	if (sc->sc_polling_finish) {
    337 		sc->sc_polling_finish = 0;
    338 		return (POLL_END);
    339 	}
    340 
    341 	/* execute A-D converter */
    342 	sc->sm_state = UCBADC_ADC_INIT;
    343 	ucbtp_adc_async(sc);
    344 
    345 	return (POLL_CONT);
    346 }
    347 
    348 int
    349 ucbtp_sibintr(void *arg)
    350 {
    351 	struct ucbtp_softc *sc = arg;
    352 
    353 	sc->sc_stat = UCBTS_STAT_TOUCH;
    354 
    355 	/* click! */
    356 	tx_sound_click(sc->sc_tc);
    357 
    358 	/* invoke touch panel polling */
    359 	if (!sc->sc_polling) {
    360 		sc->sc_pollh = tx39_poll_establish(sc->sc_tc, 1, IST_EDGE,
    361 		    ucbtp_poll, sc);
    362 		if (!sc->sc_pollh) {
    363 			printf("%s: can't poll\n", sc->sc_dev.dv_xname);
    364 		}
    365 	}
    366 
    367 	/* don't acknoledge interrupt until polling finish */
    368 
    369 	return (0);
    370 }
    371 
    372 #define REGWRITE(addr, reg, ret) (					\
    373 	sc->sm_addr = (addr),						\
    374 	sc->sm_reg = (reg),						\
    375 	sc->sm_returnstate = (ret),					\
    376 	sc->sm_state = UCBADC_REGWRITE)
    377 #define REGREAD(addr, ret) (						\
    378 	sc->sm_addr = (addr),						\
    379 	sc->sm_returnstate = (ret),					\
    380 	sc->sm_state = UCBADC_REGREAD)
    381 
    382 int
    383 ucbtp_adc_async(void *arg)
    384 {
    385 	struct ucbtp_softc *sc = arg;
    386 	tx_chipset_tag_t tc = sc->sc_tc;
    387 	txreg_t reg;
    388 	u_int16_t reg16;
    389 
    390 	DPRINTFN(9, ("state: %d\n", sc->sm_state));
    391 
    392 	switch (sc->sm_state) {
    393 	default:
    394 		panic("ucbtp_adc: invalid state %d", sc->sm_state);
    395 		/* NOTREACHED */
    396 		break;
    397 
    398 	case UCBADC_IDLE:
    399 		/* nothing to do */
    400 		break;
    401 
    402 	case UCBADC_ADC_INIT:
    403 		sc->sc_polling++;
    404 		sc->sc_stat = UCBTS_STAT_DRAG;
    405 		/* enable heart beat of this state machine */
    406 		sc->sm_ih = tx_intr_establish(
    407 			tc,
    408 			MAKEINTR(1, TX39_INTRSTATUS1_SIBSF0INT),
    409 			IST_EDGE, IPL_TTY, ucbtp_adc_async, sc);
    410 
    411 		sc->sm_state = UCBADC_MEASUMENT_INIT;
    412 		break;
    413 
    414 	case UCBADC_ADC_FINI:
    415 		/* disable heart beat of this state machine */
    416 		tx_intr_disestablish(tc, sc->sm_ih);
    417 		sc->sm_state = UCBADC_IDLE;
    418 		break;
    419 
    420 	case UCBADC_MEASUMENT_INIT:
    421 		switch (sc->sm_measurement) {
    422 		default:
    423 			panic("unknown measurement spec.");
    424 			/* NOTREACHED */
    425 			break;
    426 		case UCBADC_MEASUREMENT_X:
    427 			REGWRITE(UCB1200_TSCTRL_REG,
    428 			    UCB1200_TSCTRL_XPOSITION,
    429 			    UCBADC_ADC_ENABLE);
    430 			break;
    431 		case UCBADC_MEASUREMENT_Y:
    432 			REGWRITE(UCB1200_TSCTRL_REG,
    433 			    UCB1200_TSCTRL_YPOSITION,
    434 			    UCBADC_ADC_ENABLE);
    435 			break;
    436 		case UCBADC_MEASUREMENT_PRESSURE:
    437 			REGWRITE(UCB1200_TSCTRL_REG,
    438 			    UCB1200_TSCTRL_PRESSURE,
    439 			    UCBADC_ADC_ENABLE);
    440 			break;
    441 		}
    442 		break;
    443 
    444 	case UCBADC_MEASUMENT_FINI:
    445 		switch (sc->sm_measurement) {
    446 		case UCBADC_MEASUREMENT_X:
    447 			sc->sm_measurement = UCBADC_MEASUREMENT_Y;
    448 			sc->sm_state = UCBADC_MEASUMENT_INIT;
    449 			break;
    450 		case UCBADC_MEASUREMENT_Y:
    451 			sc->sm_measurement = UCBADC_MEASUREMENT_PRESSURE;
    452 			sc->sm_state = UCBADC_MEASUMENT_INIT;
    453 			break;
    454 		case UCBADC_MEASUREMENT_PRESSURE:
    455 			sc->sm_measurement = UCBADC_MEASUREMENT_X;
    456 			/* measument complete. pass down to wsmouse_input */
    457 			sc->sm_state = UCBADC_ADC_INPUT;
    458 			break;
    459 		}
    460 		break;
    461 
    462 	case UCBADC_ADC_ENABLE:
    463 		switch (sc->sm_measurement) {
    464 		case UCBADC_MEASUREMENT_PRESSURE:
    465 			/* FALLTHROUGH */
    466 		case UCBADC_MEASUREMENT_X:
    467 			sc->sm_tmpreg = UCB1200_ADCCTRL_INPUT_SET(
    468 				UCB1200_ADCCTRL_ENABLE,
    469 				UCB1200_ADCCTRL_INPUT_TSPX);
    470 			REGWRITE(UCB1200_ADCCTRL_REG, sc->sm_tmpreg,
    471 			    UCBADC_ADC_START0);
    472 			break;
    473 		case UCBADC_MEASUREMENT_Y:
    474 			sc->sm_tmpreg = UCB1200_ADCCTRL_INPUT_SET(
    475 				UCB1200_ADCCTRL_ENABLE,
    476 				UCB1200_ADCCTRL_INPUT_TSPY);
    477 			REGWRITE(UCB1200_ADCCTRL_REG, sc->sm_tmpreg,
    478 			    UCBADC_ADC_START0);
    479 			break;
    480 		}
    481 		break;
    482 
    483 	case UCBADC_ADC_START0:
    484 		REGWRITE(UCB1200_ADCCTRL_REG,
    485 		    sc->sm_tmpreg | UCB1200_ADCCTRL_START,
    486 		    UCBADC_ADC_START1);
    487 		break;
    488 
    489 	case UCBADC_ADC_START1:
    490 		REGWRITE(UCB1200_ADCCTRL_REG,
    491 		    sc->sm_tmpreg,
    492 		    UCBADC_ADC_DATAREAD);
    493 		sc->sm_retry = UCBADC_RETRY_DEFAULT;
    494 		break;
    495 
    496 	case UCBADC_ADC_DATAREAD:
    497 		REGREAD(UCB1200_ADCDATA_REG, UCBADC_ADC_DATAREAD_WAIT);
    498 		break;
    499 
    500 	case UCBADC_ADC_DATAREAD_WAIT:
    501 		reg16 = TX39_SIBSF0_REGDATA(sc->sm_reg);
    502 		if (!(reg16 & UCB1200_ADCDATA_INPROGRESS) &&
    503 		    --sc->sm_retry > 0) {
    504 			sc->sm_state = UCBADC_ADC_DATAREAD;
    505 		} else {
    506 			if (sc->sm_retry <= 0) {
    507 				printf("dataread failed\n");
    508 				sc->sm_state = UCBADC_ADC_FINI;
    509 				break;
    510 			}
    511 
    512 			switch (sc->sm_measurement) {
    513 			case UCBADC_MEASUREMENT_X:
    514 				sc->sc_x = UCB1200_ADCDATA(reg16);
    515 				DPRINTFN(9, ("x=%d\n", sc->sc_x));
    516 				break;
    517 			case UCBADC_MEASUREMENT_Y:
    518 				sc->sc_y = UCB1200_ADCDATA(reg16);
    519 				DPRINTFN(9, ("y=%d\n", sc->sc_y));
    520 				break;
    521 			case UCBADC_MEASUREMENT_PRESSURE:
    522 				sc->sc_p = UCB1200_ADCDATA(reg16);
    523 				DPRINTFN(9, ("p=%d\n", sc->sc_p));
    524 				break;
    525 			}
    526 
    527 			sc->sm_state = UCBADC_ADC_DISABLE;
    528 		}
    529 
    530 		break;
    531 
    532 	case UCBADC_ADC_DISABLE:
    533 		REGWRITE(UCB1200_ADCCTRL_REG, 0, UCBADC_ADC_INTRMODE);
    534 
    535 		break;
    536 	case UCBADC_ADC_INTRMODE:
    537 		REGWRITE(UCB1200_TSCTRL_REG, UCB1200_TSCTRL_INTERRUPT,
    538 		    UCBADC_MEASUMENT_FINI);
    539 		break;
    540 
    541 	case UCBADC_ADC_INPUT:
    542 		if (ucbtp_input(sc) == 0)
    543 			sc->sm_state = UCBADC_ADC_FINI;
    544 		else
    545 			sc->sm_state = UCBADC_INTR_ACK0;
    546 		break;
    547 
    548 	case UCBADC_INTR_ACK0:
    549 		REGREAD(UCB1200_INTSTAT_REG, UCBADC_INTR_ACK1);
    550 		break;
    551 
    552 	case UCBADC_INTR_ACK1:
    553 		REGWRITE(UCB1200_INTSTAT_REG, sc->sm_reg, UCBADC_INTR_ACK2);
    554 		break;
    555 
    556 	case UCBADC_INTR_ACK2:
    557 		sc->sc_polling_finish = 1;
    558 		REGWRITE(UCB1200_INTSTAT_REG, 0, UCBADC_ADC_FINI);
    559 		break;
    560 
    561 		/*
    562 		 * UCB1200 register access state
    563 		 */
    564 	case UCBADC_REGREAD:
    565 		/*
    566 		 * In	: sc->sm_addr
    567 		 * Out	: sc->sm_reg  (with SIBtag)
    568 		 */
    569 #define TXSIB_REGREAD_INIT	0
    570 #define TXSIB_REGREAD_READ	1
    571 		switch (sc->sm_read_state) {
    572 		case TXSIB_REGREAD_INIT:
    573 			reg = TX39_SIBSF0_REGADDR_SET(0, sc->sm_addr);
    574 			tx_conf_write(tc, TX39_SIBSF0CTRL_REG, reg);
    575 			sc->sm_rw_retry = UCBADC_RETRY_DEFAULT;
    576 			sc->sm_read_state = TXSIB_REGREAD_READ;
    577 			break;
    578 		case TXSIB_REGREAD_READ:
    579 			reg = tx_conf_read(tc, TX39_SIBSF0STAT_REG);
    580 			if ((TX39_SIBSF0_REGADDR(reg) != sc->sm_addr) &&
    581 			    --sc->sm_rw_retry > 0) {
    582 				break;
    583 			}
    584 
    585 			if (sc->sm_rw_retry <= 0) {
    586 				printf("sf0read: command failed\n");
    587 				sc->sm_state = UCBADC_ADC_FINI;
    588 			} else {
    589 				sc->sm_reg = reg;
    590 				sc->sm_read_state = TXSIB_REGREAD_INIT;
    591 				DPRINTFN(9, ("%08x\n", reg));
    592 				if (sc->sm_writing)
    593 					sc->sm_state = UCBADC_REGWRITE;
    594 				else
    595 					sc->sm_state = sc->sm_returnstate;
    596 			}
    597 			break;
    598 		}
    599 		break;
    600 
    601 	case UCBADC_REGWRITE:
    602 		/*
    603 		 * In	: sc->sm_addr, sc->sm_reg (lower 16bit only)
    604 		 */
    605 #define TXSIB_REGWRITE_INIT	0
    606 #define TXSIB_REGWRITE_WRITE	1
    607 		switch (sc->sm_write_state) {
    608 		case TXSIB_REGWRITE_INIT:
    609 			sc->sm_writing = 1;
    610 			sc->sm_write_state = TXSIB_REGWRITE_WRITE;
    611 			sc->sm_state = UCBADC_REGREAD;
    612 
    613 			sc->sm_write_val = sc->sm_reg;
    614 			break;
    615 		case TXSIB_REGWRITE_WRITE:
    616 			sc->sm_writing = 0;
    617 			sc->sm_write_state = TXSIB_REGWRITE_INIT;
    618 			sc->sm_state = sc->sm_returnstate;
    619 
    620 			reg = sc->sm_reg;
    621 			reg |= TX39_SIBSF0_WRITE;
    622 			TX39_SIBSF0_REGDATA_CLR(reg);
    623 			reg = TX39_SIBSF0_REGDATA_SET(reg, sc->sm_write_val);
    624 			tx_conf_write(tc, TX39_SIBSF0CTRL_REG, reg);
    625 			break;
    626 		}
    627 		break;
    628 	}
    629 
    630 	return (0);
    631 }
    632 
    633 int
    634 ucbtp_input(struct ucbtp_softc *sc)
    635 {
    636 	int rx, ry, x, y, p;
    637 
    638 	rx = sc->sc_x;
    639 	ry = sc->sc_y;
    640 	p = sc->sc_p;
    641 
    642 	if (!sc->sc_calibrated) {
    643 		DPRINTFN(2, ("x=%4d y=%4d p=%4d\n", rx, ry, p));
    644 		DPRINTF(("ucbtp_input: no calibration data\n"));
    645 	}
    646 
    647 	if (p < UCBTS_PRESS_THRESHOLD || rx == 0x3ff || ry == 0x3ff ||
    648 	    rx == 0 || ry == 0) {
    649 		sc->sc_stat = UCBTS_STAT_RELEASE;
    650 		if (sc->sc_polling < UCBTS_TAP_THRESHOLD) {
    651 			DPRINTFN(2, ("TAP!\n"));
    652 			/* button 0 DOWN */
    653 			wsmouse_input(sc->sc_wsmousedev, 1, 0, 0, 0, 0, 0);
    654 			/* button 0 UP */
    655 			wsmouse_input(sc->sc_wsmousedev, 0, 0, 0, 0, 0, 0);
    656 		} else {
    657 			wsmouse_input(sc->sc_wsmousedev, 0,
    658 			    sc->sc_ox, sc->sc_oy, 0, 0,
    659 			    WSMOUSE_INPUT_ABSOLUTE_X |
    660 			    WSMOUSE_INPUT_ABSOLUTE_Y);
    661 
    662 			DPRINTFN(2, ("RELEASE\n"));
    663 		}
    664 		sc->sc_polling = 0;
    665 
    666 		return (1);
    667 	}
    668 
    669 	if (sc->sc_xy_reverse)
    670 		tpcalib_trans(&sc->sc_tpcalib, ry, rx, &x, &y);
    671 	else
    672 		tpcalib_trans(&sc->sc_tpcalib, rx, ry, &x, &y);
    673 
    674 	DPRINTFN(2, ("x: %4d->%4d y: %4d->%4d pressure=%4d\n",
    675 	    rx, x, ry, y, p));
    676 
    677 	/* debug draw */
    678 	if (sc->sc_tc->tc_videot) {
    679 		if (sc->sc_polling == 1)
    680 			video_dot(sc->sc_tc->tc_videot, x, y);
    681 		else
    682 			video_line(sc->sc_tc->tc_videot, sc->sc_ox,
    683 			    sc->sc_oy, x, y);
    684 	}
    685 
    686 	sc->sc_ox = x, sc->sc_oy = y;
    687 
    688 	wsmouse_input(sc->sc_wsmousedev, 1, x, y, 0, 0,
    689 	    WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y);
    690 
    691 	return (0);
    692 }
    693 
    694 /*
    695  * access ops.
    696  */
    697 
    698 int
    699 ucbtp_enable(void *v)
    700 {
    701 	/* not yet */
    702 	return (0);
    703 }
    704 
    705 void
    706 ucbtp_disable(void *v)
    707 {
    708 	/* not yet */
    709 }
    710 
    711 int
    712 ucbtp_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
    713 {
    714 	struct ucbtp_softc *sc = v;
    715 
    716 	DPRINTF(("%s(%d): ucbtp_ioctl(%08lx)\n", __FILE__, __LINE__, cmd));
    717 
    718 	switch (cmd) {
    719 	case WSMOUSEIO_SRES:
    720 		printf("%s(%d): WSMOUSRIO_SRES is not supported",
    721 		    __FILE__, __LINE__);
    722 		break;
    723 
    724 	default:
    725 		return hpc_tpanel_ioctl(&sc->sc_tpcalib, cmd, data, flag, l);
    726 	}
    727 
    728 	return 0;
    729 }
    730