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wzero3_tp.c revision 1.1
      1  1.1  nonaka /*	$NetBSD: wzero3_tp.c,v 1.1 2010/05/09 10:40:00 nonaka Exp $	*/
      2  1.1  nonaka 
      3  1.1  nonaka /*
      4  1.1  nonaka  * Copyright (c) 2010 NONAKA Kimihiro <nonaka (at) netbsd.org>
      5  1.1  nonaka  * All rights reserved.
      6  1.1  nonaka  *
      7  1.1  nonaka  * Redistribution and use in source and binary forms, with or without
      8  1.1  nonaka  * modification, are permitted provided that the following conditions
      9  1.1  nonaka  * are met:
     10  1.1  nonaka  * 1. Redistributions of source code must retain the above copyright
     11  1.1  nonaka  *    notice, this list of conditions and the following disclaimer.
     12  1.1  nonaka  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1  nonaka  *    notice, this list of conditions and the following disclaimer in the
     14  1.1  nonaka  *    documentation and/or other materials provided with the distribution.
     15  1.1  nonaka  *
     16  1.1  nonaka  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  1.1  nonaka  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  1.1  nonaka  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  1.1  nonaka  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  1.1  nonaka  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  1.1  nonaka  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  1.1  nonaka  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  1.1  nonaka  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  1.1  nonaka  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  1.1  nonaka  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  1.1  nonaka  * SUCH DAMAGE.
     27  1.1  nonaka  */
     28  1.1  nonaka 
     29  1.1  nonaka #include <sys/cdefs.h>
     30  1.1  nonaka __KERNEL_RCSID(0, "$NetBSD: wzero3_tp.c,v 1.1 2010/05/09 10:40:00 nonaka Exp $");
     31  1.1  nonaka 
     32  1.1  nonaka #include <sys/types.h>
     33  1.1  nonaka #include <sys/param.h>
     34  1.1  nonaka #include <sys/systm.h>
     35  1.1  nonaka #include <sys/device.h>
     36  1.1  nonaka #include <sys/malloc.h>
     37  1.1  nonaka #include <sys/kernel.h>
     38  1.1  nonaka #include <sys/callout.h>
     39  1.1  nonaka 
     40  1.1  nonaka #include <machine/bootinfo.h>
     41  1.1  nonaka #include <machine/platid.h>
     42  1.1  nonaka #include <machine/platid_mask.h>
     43  1.1  nonaka 
     44  1.1  nonaka #include <dev/wscons/wsconsio.h>
     45  1.1  nonaka #include <dev/wscons/wsmousevar.h>
     46  1.1  nonaka #include <dev/wscons/wsdisplayvar.h>
     47  1.1  nonaka 
     48  1.1  nonaka #include <dev/hpc/hpcfbio.h>
     49  1.1  nonaka #include <dev/hpc/hpctpanelvar.h>
     50  1.1  nonaka 
     51  1.1  nonaka #include <arm/xscale/pxa2x0cpu.h>
     52  1.1  nonaka #include <arm/xscale/pxa2x0reg.h>
     53  1.1  nonaka #include <arm/xscale/pxa2x0var.h>
     54  1.1  nonaka #include <arm/xscale/xscalereg.h>
     55  1.1  nonaka #include <arm/xscale/pxa2x0_lcd.h>
     56  1.1  nonaka #include <arm/xscale/pxa2x0_gpio.h>
     57  1.1  nonaka 
     58  1.1  nonaka #include <hpcarm/dev/wzero3_reg.h>
     59  1.1  nonaka #include <hpcarm/dev/wzero3_sspvar.h>
     60  1.1  nonaka 
     61  1.1  nonaka #ifdef WZERO3TP_DEBUG
     62  1.1  nonaka #define	DPRINTF(s)	printf s
     63  1.1  nonaka #else
     64  1.1  nonaka #define	DPRINTF(s)
     65  1.1  nonaka #endif
     66  1.1  nonaka 
     67  1.1  nonaka /*
     68  1.1  nonaka  * ADS784x touch screen controller
     69  1.1  nonaka  */
     70  1.1  nonaka #define ADSCTRL_PD0_SH          0       /* PD0 bit */
     71  1.1  nonaka #define ADSCTRL_PD1_SH          1       /* PD1 bit */
     72  1.1  nonaka #define ADSCTRL_DFR_SH          2       /* SER/DFR bit */
     73  1.1  nonaka #define ADSCTRL_MOD_SH          3       /* Mode bit */
     74  1.1  nonaka #define ADSCTRL_ADR_SH          4       /* Address setting */
     75  1.1  nonaka #define ADSCTRL_STS_SH          7       /* Start bit */
     76  1.1  nonaka 
     77  1.1  nonaka #define POLL_TIMEOUT_RATE0	((hz * 150)/1000)
     78  1.1  nonaka #define POLL_TIMEOUT_RATE1	(hz / 100) /* XXX every tick */
     79  1.1  nonaka 
     80  1.1  nonaka /* Settable via sysctl. */
     81  1.1  nonaka int wzero3tp_rawmode;
     82  1.1  nonaka 
     83  1.1  nonaka static const struct wsmouse_calibcoords ws007sh_default_calib = {
     84  1.1  nonaka 	0, 0, 479, 639,				/* minx, miny, maxx, maxy */
     85  1.1  nonaka 	5,					/* samplelen */
     86  1.1  nonaka 	{
     87  1.1  nonaka 		{ 2050, 2024, 240, 320 },	/* rawx, rawy, x, y */
     88  1.1  nonaka 		{  578, 3471,  48,  64 },
     89  1.1  nonaka 		{  578,  582,  48, 576 },
     90  1.1  nonaka 		{ 3432,  582, 432, 576 },
     91  1.1  nonaka 		{ 3432, 3471, 432,  64 },
     92  1.1  nonaka 	}
     93  1.1  nonaka };
     94  1.1  nonaka 
     95  1.1  nonaka struct wzero3tp_pos {
     96  1.1  nonaka 	int x;
     97  1.1  nonaka 	int y;
     98  1.1  nonaka 	int z;			/* touch pressure */
     99  1.1  nonaka };
    100  1.1  nonaka 
    101  1.1  nonaka struct wzero3tp_model;
    102  1.1  nonaka struct wzero3tp_softc {
    103  1.1  nonaka 	device_t sc_dev;
    104  1.1  nonaka 	const struct wzero3tp_model *sc_model;
    105  1.1  nonaka 	void *sc_gh;
    106  1.1  nonaka 	struct callout sc_tp_poll;
    107  1.1  nonaka 	int sc_enabled;
    108  1.1  nonaka 	int sc_buttons; /* button emulation ? */
    109  1.1  nonaka 	struct device *sc_wsmousedev;
    110  1.1  nonaka 	struct wzero3tp_pos sc_oldpos;
    111  1.1  nonaka 	int sc_resx;
    112  1.1  nonaka 	int sc_resy;
    113  1.1  nonaka 	struct tpcalib_softc sc_tpcalib;
    114  1.1  nonaka };
    115  1.1  nonaka 
    116  1.1  nonaka static int	wzero3tp_match(device_t, cfdata_t, void *);
    117  1.1  nonaka static void	wzero3tp_attach(device_t, device_t, void *);
    118  1.1  nonaka 
    119  1.1  nonaka CFATTACH_DECL_NEW(wzero3tp, sizeof(struct wzero3tp_softc),
    120  1.1  nonaka 	wzero3tp_match, wzero3tp_attach, NULL, NULL);
    121  1.1  nonaka 
    122  1.1  nonaka static int	wzero3tp_enable(void *);
    123  1.1  nonaka static void	wzero3tp_disable(void *);
    124  1.1  nonaka static bool	wzero3tp_suspend(device_t dv, const pmf_qual_t *);
    125  1.1  nonaka static bool	wzero3tp_resume(device_t dv, const pmf_qual_t *);
    126  1.1  nonaka static void	wzero3tp_poll(void *);
    127  1.1  nonaka static int	wzero3tp_irq(void *);
    128  1.1  nonaka static int	wzero3tp_ioctl(void *, u_long, void *, int, struct lwp *);
    129  1.1  nonaka 
    130  1.1  nonaka static const struct wsmouse_accessops wzero3tp_accessops = {
    131  1.1  nonaka         wzero3tp_enable,
    132  1.1  nonaka 	wzero3tp_ioctl,
    133  1.1  nonaka 	wzero3tp_disable
    134  1.1  nonaka };
    135  1.1  nonaka 
    136  1.1  nonaka struct wzero3tp_model {
    137  1.1  nonaka 	platid_mask_t *platid;
    138  1.1  nonaka 	const char *name;
    139  1.1  nonaka 	int resx, resy;
    140  1.1  nonaka 	int intr_pin;
    141  1.1  nonaka 	const struct wsmouse_calibcoords *calib;
    142  1.1  nonaka } wzero3tp_table[] = {
    143  1.1  nonaka #if 0
    144  1.1  nonaka 	/* WS003SH */
    145  1.1  nonaka 	{
    146  1.1  nonaka 		&platid_mask_MACH_SHARP_WZERO3_WS003SH,
    147  1.1  nonaka 		"WS003SH",
    148  1.1  nonaka 		480, 640,
    149  1.1  nonaka 		-1,
    150  1.1  nonaka 		NULL,
    151  1.1  nonaka 	},
    152  1.1  nonaka 	/* WS004SH */
    153  1.1  nonaka 	{
    154  1.1  nonaka 		&platid_mask_MACH_SHARP_WZERO3_WS004SH,
    155  1.1  nonaka 		"WS004SH",
    156  1.1  nonaka 		480, 640,
    157  1.1  nonaka 		-1,
    158  1.1  nonaka 		NULL,
    159  1.1  nonaka 	},
    160  1.1  nonaka #endif
    161  1.1  nonaka 	/* WS007SH */
    162  1.1  nonaka 	{
    163  1.1  nonaka 		&platid_mask_MACH_SHARP_WZERO3_WS007SH,
    164  1.1  nonaka 		"WS007SH",
    165  1.1  nonaka 		480, 640,
    166  1.1  nonaka 		GPIO_WS007SH_TOUCH_PANEL,
    167  1.1  nonaka 		&ws007sh_default_calib,
    168  1.1  nonaka 	},
    169  1.1  nonaka #if 0
    170  1.1  nonaka 	/* WS011SH */
    171  1.1  nonaka 	{
    172  1.1  nonaka 		&platid_mask_MACH_SHARP_WZERO3_WS011SH,
    173  1.1  nonaka 		"WS011SH",
    174  1.1  nonaka 		480, 800,
    175  1.1  nonaka 		GPIO_WS011SH_TOUCH_PANEL,
    176  1.1  nonaka 		NULL,
    177  1.1  nonaka 	},
    178  1.1  nonaka 	/* WS0020H */
    179  1.1  nonaka 	{
    180  1.1  nonaka 		&platid_mask_MACH_SHARP_WZERO3_WS020SH,
    181  1.1  nonaka 		"WS020SH",
    182  1.1  nonaka 		480, 800,
    183  1.1  nonaka 		-1,
    184  1.1  nonaka 		NULL,
    185  1.1  nonaka 	},
    186  1.1  nonaka #endif
    187  1.1  nonaka 	{
    188  1.1  nonaka 		NULL, NULL, -1, -1, -1, NULL,
    189  1.1  nonaka 	},
    190  1.1  nonaka };
    191  1.1  nonaka 
    192  1.1  nonaka 
    193  1.1  nonaka static const struct wzero3tp_model *
    194  1.1  nonaka wzero3tp_lookup(void)
    195  1.1  nonaka {
    196  1.1  nonaka 	const struct wzero3tp_model *model;
    197  1.1  nonaka 
    198  1.1  nonaka 	for (model = wzero3tp_table; model->platid != NULL; model++) {
    199  1.1  nonaka 		if (platid_match(&platid, model->platid)) {
    200  1.1  nonaka 			return model;
    201  1.1  nonaka 		}
    202  1.1  nonaka 	}
    203  1.1  nonaka 	return NULL;
    204  1.1  nonaka }
    205  1.1  nonaka 
    206  1.1  nonaka static int
    207  1.1  nonaka wzero3tp_match(device_t parent, cfdata_t cf, void *aux)
    208  1.1  nonaka {
    209  1.1  nonaka 
    210  1.1  nonaka 	if (strcmp(cf->cf_name, "wzero3tp") != 0)
    211  1.1  nonaka 		return 0;
    212  1.1  nonaka 	if (wzero3tp_lookup() == NULL)
    213  1.1  nonaka 		return 0;
    214  1.1  nonaka 	return 1;
    215  1.1  nonaka }
    216  1.1  nonaka 
    217  1.1  nonaka static void
    218  1.1  nonaka wzero3tp_attach(device_t parent, device_t self, void *aux)
    219  1.1  nonaka {
    220  1.1  nonaka 	struct wzero3tp_softc *sc = device_private(self);
    221  1.1  nonaka 	struct wsmousedev_attach_args a;
    222  1.1  nonaka 
    223  1.1  nonaka 	sc->sc_dev = self;
    224  1.1  nonaka 
    225  1.1  nonaka 	sc->sc_model = wzero3tp_lookup();
    226  1.1  nonaka 	if (sc->sc_model == NULL)
    227  1.1  nonaka 		return;
    228  1.1  nonaka 
    229  1.1  nonaka 	aprint_normal(": touch panel\n");
    230  1.1  nonaka 	aprint_naive("\n");
    231  1.1  nonaka 
    232  1.1  nonaka 	callout_init(&sc->sc_tp_poll, 0);
    233  1.1  nonaka 	callout_setfunc(&sc->sc_tp_poll, wzero3tp_poll, sc);
    234  1.1  nonaka 
    235  1.1  nonaka 	a.accessops = &wzero3tp_accessops;
    236  1.1  nonaka 	a.accesscookie = sc;
    237  1.1  nonaka 
    238  1.1  nonaka 	sc->sc_resx = sc->sc_model->resx;
    239  1.1  nonaka 	sc->sc_resy = sc->sc_model->resy;
    240  1.1  nonaka 
    241  1.1  nonaka 	sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint);
    242  1.1  nonaka 
    243  1.1  nonaka 	/* Initialize calibration, set default parameters. */
    244  1.1  nonaka 	tpcalib_init(&sc->sc_tpcalib);
    245  1.1  nonaka 	tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
    246  1.1  nonaka 	    __UNCONST(sc->sc_model->calib), 0, 0);
    247  1.1  nonaka }
    248  1.1  nonaka 
    249  1.1  nonaka static int
    250  1.1  nonaka wzero3tp_enable(void *v)
    251  1.1  nonaka {
    252  1.1  nonaka 	struct wzero3tp_softc *sc = (struct wzero3tp_softc *)v;
    253  1.1  nonaka 
    254  1.1  nonaka 	DPRINTF(("%s: wzero3tp_enable()\n", device_xname(sc->sc_dev)));
    255  1.1  nonaka 
    256  1.1  nonaka 	if (sc->sc_enabled) {
    257  1.1  nonaka 		DPRINTF(("%s: already enabled\n", device_xname(sc->sc_dev)));
    258  1.1  nonaka 		return EBUSY;
    259  1.1  nonaka 	}
    260  1.1  nonaka 
    261  1.1  nonaka 	callout_stop(&sc->sc_tp_poll);
    262  1.1  nonaka 
    263  1.1  nonaka 	if (!pmf_device_register(sc->sc_dev, wzero3tp_suspend, wzero3tp_resume))
    264  1.1  nonaka 		aprint_error_dev(sc->sc_dev,
    265  1.1  nonaka 		    "couldn't establish power handler\n");
    266  1.1  nonaka 
    267  1.1  nonaka 	if (sc->sc_model->intr_pin >= 0) {
    268  1.1  nonaka 		pxa2x0_gpio_set_function(sc->sc_model->intr_pin, GPIO_IN);
    269  1.1  nonaka 
    270  1.1  nonaka 		/* XXX */
    271  1.1  nonaka 		if (sc->sc_gh == NULL) {
    272  1.1  nonaka 			sc->sc_gh = pxa2x0_gpio_intr_establish(
    273  1.1  nonaka 			    sc->sc_model->intr_pin, IST_EDGE_FALLING, IPL_TTY,
    274  1.1  nonaka 			    wzero3tp_irq, sc);
    275  1.1  nonaka 		} else {
    276  1.1  nonaka 			pxa2x0_gpio_intr_unmask(sc->sc_gh);
    277  1.1  nonaka 		}
    278  1.1  nonaka 	}
    279  1.1  nonaka 
    280  1.1  nonaka 	/* enable interrupts */
    281  1.1  nonaka 	sc->sc_enabled = 1;
    282  1.1  nonaka 	sc->sc_buttons = 0;
    283  1.1  nonaka 
    284  1.1  nonaka 	return 0;
    285  1.1  nonaka }
    286  1.1  nonaka 
    287  1.1  nonaka static void
    288  1.1  nonaka wzero3tp_disable(void *v)
    289  1.1  nonaka {
    290  1.1  nonaka 	struct wzero3tp_softc *sc = (struct wzero3tp_softc *)v;
    291  1.1  nonaka 
    292  1.1  nonaka 	DPRINTF(("%s: wzero3tp_disable()\n", device_xname(sc->sc_dev)));
    293  1.1  nonaka 
    294  1.1  nonaka 	callout_stop(&sc->sc_tp_poll);
    295  1.1  nonaka 
    296  1.1  nonaka 	pmf_device_deregister(sc->sc_dev);
    297  1.1  nonaka 
    298  1.1  nonaka 	if (sc->sc_gh)
    299  1.1  nonaka 		pxa2x0_gpio_intr_mask(sc->sc_gh);
    300  1.1  nonaka 
    301  1.1  nonaka 	/* disable interrupts */
    302  1.1  nonaka 	sc->sc_enabled = 0;
    303  1.1  nonaka }
    304  1.1  nonaka 
    305  1.1  nonaka static bool
    306  1.1  nonaka wzero3tp_suspend(device_t dv, const pmf_qual_t *qual)
    307  1.1  nonaka {
    308  1.1  nonaka 	struct wzero3tp_softc *sc = device_private(dv);
    309  1.1  nonaka 
    310  1.1  nonaka 	DPRINTF(("%s: wzero3tp_suspend()\n", device_xname(sc->sc_dev)));
    311  1.1  nonaka 
    312  1.1  nonaka 	sc->sc_enabled = 0;
    313  1.1  nonaka 	if (sc->sc_gh)
    314  1.1  nonaka 		pxa2x0_gpio_intr_mask(sc->sc_gh);
    315  1.1  nonaka 
    316  1.1  nonaka 	callout_stop(&sc->sc_tp_poll);
    317  1.1  nonaka 
    318  1.1  nonaka 	/* Turn off reference voltage but leave ADC on. */
    319  1.1  nonaka 	(void)wzero3ssp_ic_send(WZERO3_SSP_IC_ADS7846,
    320  1.1  nonaka 	    (1<<ADSCTRL_PD1_SH) | (1<<ADSCTRL_ADR_SH) | (1<<ADSCTRL_STS_SH));
    321  1.1  nonaka 
    322  1.1  nonaka 	if (sc->sc_model->intr_pin >= 0) {
    323  1.1  nonaka 		pxa2x0_gpio_set_function(sc->sc_model->intr_pin,
    324  1.1  nonaka 		    GPIO_OUT|GPIO_SET);
    325  1.1  nonaka 	}
    326  1.1  nonaka 
    327  1.1  nonaka 	return true;
    328  1.1  nonaka }
    329  1.1  nonaka 
    330  1.1  nonaka static bool
    331  1.1  nonaka wzero3tp_resume(device_t dv, const pmf_qual_t *qual)
    332  1.1  nonaka {
    333  1.1  nonaka 	struct wzero3tp_softc *sc = device_private(dv);
    334  1.1  nonaka 
    335  1.1  nonaka 	DPRINTF(("%s: wzero3tp_resume()\n", device_xname(sc->sc_dev)));
    336  1.1  nonaka 
    337  1.1  nonaka 	if (sc->sc_model->intr_pin >= 0)
    338  1.1  nonaka 		pxa2x0_gpio_set_function(sc->sc_model->intr_pin, GPIO_IN);
    339  1.1  nonaka 	if (sc->sc_gh)
    340  1.1  nonaka 		pxa2x0_gpio_intr_mask(sc->sc_gh);
    341  1.1  nonaka 
    342  1.1  nonaka 	/* Enable automatic low power mode. */
    343  1.1  nonaka 	(void)wzero3ssp_ic_send(WZERO3_SSP_IC_ADS7846,
    344  1.1  nonaka 	    (4<<ADSCTRL_ADR_SH) | (1<<ADSCTRL_STS_SH));
    345  1.1  nonaka 
    346  1.1  nonaka 	if (sc->sc_gh)
    347  1.1  nonaka 		pxa2x0_gpio_intr_unmask(sc->sc_gh);
    348  1.1  nonaka 	sc->sc_enabled = 1;
    349  1.1  nonaka 
    350  1.1  nonaka 	return true;
    351  1.1  nonaka }
    352  1.1  nonaka 
    353  1.1  nonaka #define HSYNC()								\
    354  1.1  nonaka do {									\
    355  1.1  nonaka 	while (pxa2x0_gpio_get_bit(GPIO_WS007SH_HSYNC) == 0)		\
    356  1.1  nonaka 		continue;						\
    357  1.1  nonaka 	while (pxa2x0_gpio_get_bit(GPIO_WS007SH_HSYNC) != 0)		\
    358  1.1  nonaka 		continue;						\
    359  1.1  nonaka } while (/*CONSTCOND*/0)
    360  1.1  nonaka 
    361  1.1  nonaka static uint32_t wzero3tp_sync_ads784x(int, int, uint32_t);
    362  1.1  nonaka static int wzero3tp_readpos(struct wzero3tp_pos *);
    363  1.1  nonaka 
    364  1.1  nonaka /*
    365  1.1  nonaka  * Communicate synchronously with the ADS784x touch screen controller.
    366  1.1  nonaka  */
    367  1.1  nonaka static uint32_t
    368  1.1  nonaka wzero3tp_sync_ads784x(int dorecv/* XXX */, int dosend/* XXX */, uint32_t cmd)
    369  1.1  nonaka {
    370  1.1  nonaka 	uint32_t rv = 0;
    371  1.1  nonaka 
    372  1.1  nonaka 	HSYNC();
    373  1.1  nonaka 
    374  1.1  nonaka 	if (dorecv)
    375  1.1  nonaka 		rv = wzero3ssp_ic_stop(WZERO3_SSP_IC_ADS7846);
    376  1.1  nonaka 
    377  1.1  nonaka 	if (dosend) {
    378  1.1  nonaka 		/* send dummy command; discard SSDR */
    379  1.1  nonaka 		(void)wzero3ssp_ic_send(WZERO3_SSP_IC_ADS7846, cmd);
    380  1.1  nonaka 
    381  1.1  nonaka 		/* wait for refresh */
    382  1.1  nonaka 		HSYNC();
    383  1.1  nonaka 
    384  1.1  nonaka 		/* send the actual command; keep ADS784x enabled */
    385  1.1  nonaka 		wzero3ssp_ic_start(WZERO3_SSP_IC_ADS7846, cmd);
    386  1.1  nonaka 	}
    387  1.1  nonaka 
    388  1.1  nonaka 	return rv;
    389  1.1  nonaka }
    390  1.1  nonaka 
    391  1.1  nonaka static int
    392  1.1  nonaka wzero3tp_readpos(struct wzero3tp_pos *pos)
    393  1.1  nonaka {
    394  1.1  nonaka 	int cmd, cmd0;
    395  1.1  nonaka 	int z0, z1;
    396  1.1  nonaka 	int down;
    397  1.1  nonaka 
    398  1.1  nonaka 	cmd0 = (1<<ADSCTRL_STS_SH) | (1<<ADSCTRL_PD0_SH) | (1<<ADSCTRL_PD1_SH);
    399  1.1  nonaka 
    400  1.1  nonaka 	/* check that pen is down */
    401  1.1  nonaka 	cmd = cmd0 | (3<<ADSCTRL_ADR_SH);
    402  1.1  nonaka 	z0 = wzero3ssp_ic_send(WZERO3_SSP_IC_ADS7846, cmd);
    403  1.1  nonaka 	DPRINTF(("ztp_readpos(): first z0 = %d\n", z0));
    404  1.1  nonaka 
    405  1.1  nonaka 	down = (z0 >= 10);
    406  1.1  nonaka 	if (!down)
    407  1.1  nonaka 		goto out;
    408  1.1  nonaka 
    409  1.1  nonaka 	/* Y (discard) */
    410  1.1  nonaka 	cmd = cmd0 | (1<<ADSCTRL_ADR_SH);
    411  1.1  nonaka 	(void)wzero3tp_sync_ads784x(0, 1, cmd);
    412  1.1  nonaka 
    413  1.1  nonaka 	/* Y */
    414  1.1  nonaka 	cmd = cmd0 | (1<<ADSCTRL_ADR_SH);
    415  1.1  nonaka 	(void)wzero3tp_sync_ads784x(1, 1, cmd);
    416  1.1  nonaka 
    417  1.1  nonaka 	/* X */
    418  1.1  nonaka 	cmd = cmd0 | (5<<ADSCTRL_ADR_SH);
    419  1.1  nonaka 	pos->y = wzero3tp_sync_ads784x(1, 1, cmd);
    420  1.1  nonaka 	DPRINTF(("wzero3tp_readpos(): y = %d\n", pos->y));
    421  1.1  nonaka 
    422  1.1  nonaka 	/* Z0 */
    423  1.1  nonaka 	cmd = cmd0 | (3<<ADSCTRL_ADR_SH);
    424  1.1  nonaka 	pos->x = wzero3tp_sync_ads784x(1, 1, cmd);
    425  1.1  nonaka 	DPRINTF(("wzero3tp_readpos(): x = %d\n", pos->x));
    426  1.1  nonaka 
    427  1.1  nonaka 	/* Z1 */
    428  1.1  nonaka 	cmd = cmd0 | (4<<ADSCTRL_ADR_SH);
    429  1.1  nonaka 	z0 = wzero3tp_sync_ads784x(1, 1, cmd);
    430  1.1  nonaka 	z1 = wzero3tp_sync_ads784x(1, 0, cmd);
    431  1.1  nonaka 	DPRINTF(("wzero3tp_readpos(): z0 = %d, z1 = %d\n", z0, z1));
    432  1.1  nonaka 
    433  1.1  nonaka 	/* check that pen is still down */
    434  1.1  nonaka 	if (z0 == 0 || (pos->x * (z1 - z0) / z0) >= 15000)
    435  1.1  nonaka 		down = 0;
    436  1.1  nonaka 	pos->z = down;
    437  1.1  nonaka 
    438  1.1  nonaka out:
    439  1.1  nonaka 	/* Enable automatic low power mode. */
    440  1.1  nonaka 	cmd = (1<<ADSCTRL_ADR_SH) | (1<<ADSCTRL_STS_SH);
    441  1.1  nonaka 	(void)wzero3ssp_ic_send(WZERO3_SSP_IC_ADS7846, cmd);
    442  1.1  nonaka 
    443  1.1  nonaka 	return down;
    444  1.1  nonaka }
    445  1.1  nonaka 
    446  1.1  nonaka static void
    447  1.1  nonaka wzero3tp_poll(void *v)
    448  1.1  nonaka {
    449  1.1  nonaka 	int s;
    450  1.1  nonaka 
    451  1.1  nonaka 	s = spltty();
    452  1.1  nonaka 	(void)wzero3tp_irq(v);
    453  1.1  nonaka 	splx(s);
    454  1.1  nonaka }
    455  1.1  nonaka 
    456  1.1  nonaka static int
    457  1.1  nonaka wzero3tp_irq(void *v)
    458  1.1  nonaka {
    459  1.1  nonaka 	struct wzero3tp_softc *sc = (struct wzero3tp_softc *)v;
    460  1.1  nonaka 	struct wzero3tp_pos tp = { 0, 0, 0 };
    461  1.1  nonaka 	int pindown;
    462  1.1  nonaka 	int down;
    463  1.1  nonaka 	int x, y;
    464  1.1  nonaka 	int s;
    465  1.1  nonaka 
    466  1.1  nonaka 	if (!sc->sc_enabled)
    467  1.1  nonaka 		return 0;
    468  1.1  nonaka 
    469  1.1  nonaka 	s = splhigh();
    470  1.1  nonaka 
    471  1.1  nonaka 	if (sc->sc_model->intr_pin >= 0)
    472  1.1  nonaka 		pindown = pxa2x0_gpio_get_bit(sc->sc_model->intr_pin) ? 0 : 1;
    473  1.1  nonaka 	else
    474  1.1  nonaka 		pindown = 0;/*XXX*/
    475  1.1  nonaka 	DPRINTF(("%s: pindown = %d\n", device_xname(sc->sc_dev), pindown));
    476  1.1  nonaka 	if (pindown) {
    477  1.1  nonaka 		pxa2x0_gpio_intr_mask(sc->sc_gh);
    478  1.1  nonaka 		callout_schedule(&sc->sc_tp_poll, POLL_TIMEOUT_RATE1);
    479  1.1  nonaka 	}
    480  1.1  nonaka 
    481  1.1  nonaka 	down = wzero3tp_readpos(&tp);
    482  1.1  nonaka 	DPRINTF(("%s: x = %d, y = %d, z = %d, down = %d\n",
    483  1.1  nonaka 	    device_xname(sc->sc_dev), tp.x, tp.y, tp.z, down));
    484  1.1  nonaka 
    485  1.1  nonaka 	if (!pindown) {
    486  1.1  nonaka 		pxa2x0_gpio_intr_unmask(sc->sc_gh);
    487  1.1  nonaka 		callout_schedule(&sc->sc_tp_poll, POLL_TIMEOUT_RATE0);
    488  1.1  nonaka 	}
    489  1.1  nonaka 	if (sc->sc_model->intr_pin >= 0)
    490  1.1  nonaka 		pxa2x0_gpio_clear_intr(sc->sc_model->intr_pin);
    491  1.1  nonaka 
    492  1.1  nonaka 	splx(s);
    493  1.1  nonaka 
    494  1.1  nonaka 	if (down) {
    495  1.1  nonaka 		if (!wzero3tp_rawmode) {
    496  1.1  nonaka 			tpcalib_trans(&sc->sc_tpcalib, tp.x, tp.y, &x, &y);
    497  1.1  nonaka 			DPRINTF(("%s: x = %d, y = %d\n",
    498  1.1  nonaka 			    device_xname(sc->sc_dev), x, y));
    499  1.1  nonaka 			tp.x = x;
    500  1.1  nonaka 			tp.y = y;
    501  1.1  nonaka 		}
    502  1.1  nonaka 	}
    503  1.1  nonaka 
    504  1.1  nonaka 	if (!down) {
    505  1.1  nonaka 		/* x/y values are not reliable when pen is up */
    506  1.1  nonaka 		tp = sc->sc_oldpos;
    507  1.1  nonaka 	}
    508  1.1  nonaka 
    509  1.1  nonaka 	if (down || sc->sc_buttons != down) {
    510  1.1  nonaka 		wsmouse_input(sc->sc_wsmousedev, down, tp.x, tp.y, 0, 0,
    511  1.1  nonaka 		    WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y);
    512  1.1  nonaka 		sc->sc_buttons = down;
    513  1.1  nonaka 		sc->sc_oldpos = tp;
    514  1.1  nonaka 	}
    515  1.1  nonaka 
    516  1.1  nonaka 	return 1;
    517  1.1  nonaka }
    518  1.1  nonaka 
    519  1.1  nonaka static int
    520  1.1  nonaka wzero3tp_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
    521  1.1  nonaka {
    522  1.1  nonaka 	struct wzero3tp_softc *sc = (struct wzero3tp_softc *)v;
    523  1.1  nonaka 	struct wsmouse_id *id;
    524  1.1  nonaka 
    525  1.1  nonaka 	switch (cmd) {
    526  1.1  nonaka 	case WSMOUSEIO_GTYPE:
    527  1.1  nonaka 		*(u_int *)data = WSMOUSE_TYPE_TPANEL;
    528  1.1  nonaka 		return 0;
    529  1.1  nonaka 
    530  1.1  nonaka 	case WSMOUSEIO_GETID:
    531  1.1  nonaka 		/*
    532  1.1  nonaka 		 * return unique ID string,
    533  1.1  nonaka 		 * "<vendor> <model> <serial number>"
    534  1.1  nonaka 		 */
    535  1.1  nonaka 		id = (struct wsmouse_id *)data;
    536  1.1  nonaka 		if (id->type != WSMOUSE_ID_TYPE_UIDSTR)
    537  1.1  nonaka 			return EINVAL;
    538  1.1  nonaka 		snprintf(id->data, WSMOUSE_ID_MAXLEN, "Sharp %s SN000000",
    539  1.1  nonaka 		    sc->sc_model->name);
    540  1.1  nonaka 		id->length = strlen(id->data);
    541  1.1  nonaka 		return 0;
    542  1.1  nonaka 
    543  1.1  nonaka 	case WSMOUSEIO_SCALIBCOORDS:
    544  1.1  nonaka 	case WSMOUSEIO_GCALIBCOORDS:
    545  1.1  nonaka 		return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, l);
    546  1.1  nonaka 	}
    547  1.1  nonaka 
    548  1.1  nonaka 	return EPASSTHROUGH;
    549  1.1  nonaka }
    550