xref: /netbsd-src/sys/arch/hpcsh/dev/j6x0tp.c (revision 404fbe5fb94ca1e054339640cabb2801ce52dd30)
1 /*	$NetBSD: j6x0tp.c,v 1.22 2008/03/27 03:58:47 uwe Exp $ */
2 
3 /*
4  * Copyright (c) 2003 Valeriy E. Ushakov
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29 
30 #include <sys/cdefs.h>
31 __KERNEL_RCSID(0, "$NetBSD: j6x0tp.c,v 1.22 2008/03/27 03:58:47 uwe Exp $");
32 
33 #include <sys/param.h>
34 #include <sys/kernel.h>
35 #include <sys/device.h>
36 #include <sys/malloc.h>
37 #include <sys/systm.h>
38 #include <sys/callout.h>
39 
40 #include "opt_j6x0tp.h"
41 
42 #include <dev/wscons/wsconsio.h>
43 #include <dev/wscons/wsmousevar.h>
44 #include <dev/wscons/wskbdvar.h>
45 #include <dev/wscons/wsksymvar.h>
46 #include <dev/wscons/wsksymdef.h>
47 #include <dev/hpc/hpctpanelvar.h>
48 
49 #include <machine/platid.h>
50 #include <machine/platid_mask.h>
51 
52 #include <machine/intr.h>
53 
54 #include <sh3/exception.h>
55 #include <sh3/intcreg.h>
56 #include <sh3/pfcreg.h>
57 #include <sh3/adcreg.h>
58 
59 #include <sh3/dev/adcvar.h>
60 
61 
62 #if 0 /* XXX: disabled in favor of local version that uses printf_nolog */
63 #define DPRINTF_ENABLE
64 #define DPRINTF_DEBUG	j6x0tp_debug
65 #define DPRINTF_LEVEL	0
66 #include <machine/debug.h>
67 #else
68 #ifdef J6X0TP_DEBUG
69 volatile int j6x0tp_debug = 0;
70 #define DPRINTF_PRINTF		printf_nolog
71 #define DPRINTF(arg)		if (j6x0tp_debug) DPRINTF_PRINTF arg
72 #define DPRINTFN(n, arg)	if (j6x0tp_debug > (n)) DPRINTF_PRINTF arg
73 #else
74 #define DPRINTF(arg)		((void)0)
75 #define DPRINTFN(n, arg)	((void)0)
76 #endif
77 #endif
78 
79 
80 /*
81  * PFC bits pertinent to Jornada 6x0 touchpanel
82  */
83 #define PHDR_TP_PEN_DOWN	0x08
84 
85 #define SCPDR_TP_SCAN_ENABLE	0x20
86 #define SCPDR_TP_SCAN_Y		0x02
87 #define SCPDR_TP_SCAN_X		0x01
88 
89 /*
90  * A/D converter channels to get x/y from
91  */
92 #define ADC_CHANNEL_TP_Y	1
93 #define ADC_CHANNEL_TP_X	2
94 
95 /*
96  * Default (read: my device :) raw X/Y values for framebuffer edges.
97  * XXX: defopt these?
98  */
99 #define J6X0TP_FB_LEFT		 38
100 #define J6X0TP_FB_RIGHT		950
101 #define J6X0TP_FB_TOP		 80
102 #define J6X0TP_FB_BOTTOM	900
103 
104 /*
105  * Bottom of the n'th hard icon (n = 1..4)
106  */
107 #define J6X0TP_HARD_ICON_MAX_Y(n) \
108 	(J6X0TP_FB_TOP + ((J6X0TP_FB_BOTTOM - J6X0TP_FB_TOP) / 4) * (n))
109 
110 
111 struct j6x0tp_softc {
112 	device_t sc_dev;
113 
114 #define J6X0TP_WSMOUSE_ENABLED	0x01
115 #define J6X0TP_WSKBD_ENABLED	0x02
116 	int sc_enabled;
117 
118 	int sc_hard_icon;
119 
120 	struct callout sc_touch_ch;
121 
122 	device_t sc_wsmousedev;
123 	device_t sc_wskbddev;
124 
125 	struct tpcalib_softc sc_tpcalib; /* calibration info for wsmouse */
126 };
127 
128 
129 /* config machinery */
130 static int	j6x0tp_match(device_t, cfdata_t, void *);
131 static void	j6x0tp_attach(device_t, device_t, void *);
132 
133 /* wsmouse accessops */
134 static int	j6x0tp_wsmouse_enable(void *);
135 static int	j6x0tp_wsmouse_ioctl(void *, u_long, void *, int, lwp_t *);
136 static void	j6x0tp_wsmouse_disable(void *);
137 
138 /* wskbd accessops */
139 static int	j6x0tp_wskbd_enable(void *, int);
140 static void	j6x0tp_wskbd_set_leds(void *, int);
141 static int	j6x0tp_wskbd_ioctl(void *, u_long, void *, int, lwp_t *);
142 
143 /* internal driver routines */
144 static void	j6x0tp_enable(struct j6x0tp_softc *);
145 static void	j6x0tp_disable(struct j6x0tp_softc *);
146 static int	j6x0tp_enable_child(struct j6x0tp_softc *, int, int);
147 static int	j6x0tp_intr(void *);
148 static void	j6x0tp_start_polling(void *);
149 static void	j6x0tp_stop_polling(struct j6x0tp_softc *);
150 static void	j6x0tp_callout_wsmouse(void *);
151 static void	j6x0tp_callout_wskbd(void *);
152 static void	j6x0tp_wsmouse_input(struct j6x0tp_softc *, int, int);
153 static void	j6x0tp_get_raw_xy(int *, int *);
154 static int	j6x0tp_get_hard_icon(int, int);
155 
156 
157 static const struct wsmouse_accessops j6x0tp_accessops = {
158 	j6x0tp_wsmouse_enable,
159 	j6x0tp_wsmouse_ioctl,
160 	j6x0tp_wsmouse_disable
161 };
162 
163 static const struct wsmouse_calibcoords j6x0tp_default_calib = {
164 	0, 0, 639, 239,
165 	4,
166 	{{ J6X0TP_FB_LEFT,  J6X0TP_FB_TOP,      0,   0 },
167 	 { J6X0TP_FB_RIGHT, J6X0TP_FB_TOP,    639,   0 },
168 	 { J6X0TP_FB_LEFT,  J6X0TP_FB_BOTTOM,   0, 239 },
169 	 { J6X0TP_FB_RIGHT, J6X0TP_FB_BOTTOM, 639, 239 }}
170 };
171 
172 static const struct wskbd_accessops j6x0tp_wskbd_accessops = {
173 	j6x0tp_wskbd_enable,
174 	j6x0tp_wskbd_set_leds,
175 	j6x0tp_wskbd_ioctl
176 };
177 
178 
179 #ifndef J6X0TP_SETTINGS_ICON_KEYSYM
180 #define J6X0TP_SETTINGS_ICON_KEYSYM	KS_Home
181 #endif
182 #ifndef J6X0TP_PGUP_ICON_KEYSYM
183 #define J6X0TP_PGUP_ICON_KEYSYM		KS_Prior
184 #endif
185 #ifndef J6X0TP_PGDN_ICON_KEYSYM
186 #define J6X0TP_PGDN_ICON_KEYSYM		KS_Next
187 #endif
188 #ifndef J6X0TP_SWITCH_ICON_KEYSYM
189 #define J6X0TP_SWITCH_ICON_KEYSYM	KS_End
190 #endif
191 
192 static const keysym_t j6x0tp_wskbd_keydesc[] = {
193 	KS_KEYCODE(1), J6X0TP_SETTINGS_ICON_KEYSYM,
194 	KS_KEYCODE(2), J6X0TP_PGUP_ICON_KEYSYM,
195 	KS_KEYCODE(3), J6X0TP_PGDN_ICON_KEYSYM,
196 	KS_KEYCODE(4), J6X0TP_SWITCH_ICON_KEYSYM
197 };
198 
199 static const struct wscons_keydesc j6x0tp_wskbd_keydesctab[] = {
200 	{ KB_US, 0,
201 	  sizeof(j6x0tp_wskbd_keydesc)/sizeof(keysym_t),
202 	  j6x0tp_wskbd_keydesc
203 	},
204 	{0, 0, 0, 0}
205 };
206 
207 static const struct wskbd_mapdata j6x0tp_wskbd_keymapdata = {
208         j6x0tp_wskbd_keydesctab, KB_US
209 };
210 
211 
212 CFATTACH_DECL_NEW(j6x0tp, sizeof(struct j6x0tp_softc),
213     j6x0tp_match, j6x0tp_attach, NULL, NULL);
214 
215 
216 static int
217 j6x0tp_match(device_t parent, cfdata_t cf, void *aux)
218 {
219 
220 	/*
221 	 * XXX: platid_mask_MACH_HP_LX also matches 360LX.  It's not
222 	 * confirmed whether touch panel in 360LX is connected this
223 	 * way.  We may need to regroup platid masks.
224 	 */
225 	if (!platid_match(&platid, &platid_mask_MACH_HP_JORNADA_6XX)
226 	    && !platid_match(&platid, &platid_mask_MACH_HP_LX))
227 		return (0);
228 
229 	if (strcmp(cf->cf_name, "j6x0tp") != 0)
230 		return (0);
231 
232 	return (1);
233 }
234 
235 
236 static void
237 j6x0tp_attach(device_t parent, device_t self, void *aux)
238 {
239 	struct j6x0tp_softc *sc;
240 	struct wsmousedev_attach_args wsma;
241 	struct wskbddev_attach_args wska;
242 
243 	aprint_naive("\n");
244 	aprint_normal("\n");
245 
246 	sc = device_private(self);
247 	sc->sc_dev = self;
248 
249 	sc->sc_enabled = 0;
250 	sc->sc_hard_icon = 0;
251 
252 	/* touch-panel as a pointing device */
253 	wsma.accessops = &j6x0tp_accessops;
254 	wsma.accesscookie = sc;
255 
256 	sc->sc_wsmousedev = config_found_ia(self, "wsmousedev", &wsma,
257 					    wsmousedevprint);
258 	if (sc->sc_wsmousedev == NULL)
259 		return;
260 
261 	/* on-screen "hard icons" as a keyboard device */
262 	wska.console = 0;
263 	wska.keymap = &j6x0tp_wskbd_keymapdata;
264 	wska.accessops = &j6x0tp_wskbd_accessops;
265 	wska.accesscookie = sc;
266 
267 	sc->sc_wskbddev = config_found_ia(self, "wskbddev", &wska,
268 					  wskbddevprint);
269 
270 	/* init calibration, set default parameters */
271 	tpcalib_init(&sc->sc_tpcalib);
272 	tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
273 		      (void *)__UNCONST(&j6x0tp_default_calib), 0, 0);
274 
275 	/* used when in polling mode */
276 	callout_init(&sc->sc_touch_ch, 0);
277 
278 	/* establish interrupt handler, but disable until opened */
279 	intc_intr_establish(SH7709_INTEVT2_IRQ3, IST_EDGE, IPL_TTY,
280 			    j6x0tp_intr, sc);
281 	intc_intr_disable(SH7709_INTEVT2_IRQ3);
282 }
283 
284 
285 /*
286  * Enable touch panel:  we start in interrupt mode.
287  * Must be called as spltty().
288  */
289 static void
290 j6x0tp_enable(struct j6x0tp_softc *sc)
291 {
292 
293 	DPRINTFN(2, ("%s: enable\n", device_xname(sc->sc_dev)));
294 	intc_intr_enable(SH7709_INTEVT2_IRQ3);
295 }
296 
297 
298 /*
299  * Disable touch panel: disable interrupt, cancel pending callout.
300  * Must be called as spltty().
301  */
302 static void
303 j6x0tp_disable(struct j6x0tp_softc *sc)
304 {
305 
306 	DPRINTFN(2, ("%s: disable\n", device_xname(sc->sc_dev)));
307 	intc_intr_disable(SH7709_INTEVT2_IRQ3);
308 	callout_stop(&sc->sc_touch_ch);
309 }
310 
311 
312 static int
313 j6x0tp_enable_child(struct j6x0tp_softc *sc, int child, int on)
314 {
315 	int s = spltty();
316 
317 	if (on) {
318 		if (!sc->sc_enabled)
319 			j6x0tp_enable(sc);
320 		sc->sc_enabled |= child;
321 	} else {
322 		sc->sc_enabled &= ~child;
323 		if (!sc->sc_enabled)
324 			j6x0tp_disable(sc);
325 	}
326 
327 	splx(s);
328 	return (0);
329 }
330 
331 
332 static int
333 j6x0tp_wsmouse_enable(void *arg)
334 {
335 	struct j6x0tp_softc *sc = arg;
336 
337 	DPRINTFN(1, ("%s: wsmouse enable\n", device_xname(sc->sc_dev)));
338 	return (j6x0tp_enable_child(sc, J6X0TP_WSMOUSE_ENABLED, 1));
339 }
340 
341 
342 static void
343 j6x0tp_wsmouse_disable(void *arg)
344 {
345 	struct j6x0tp_softc *sc = arg;
346 
347 	DPRINTFN(1, ("%s: wsmouse disable\n", device_xname(sc->sc_dev)));
348 	j6x0tp_enable_child(sc, J6X0TP_WSMOUSE_ENABLED, 0);
349 }
350 
351 
352 static int
353 j6x0tp_wskbd_enable(void *arg, int on)
354 {
355 	struct j6x0tp_softc *sc = arg;
356 
357 	DPRINTFN(1, ("%s: wskbd %sable\n", device_xname(sc->sc_dev),
358 		     on ? "en" : "dis"));
359 	return (j6x0tp_enable_child(sc, J6X0TP_WSKBD_ENABLED, on));
360 }
361 
362 
363 static int
364 j6x0tp_intr(void *arg)
365 {
366 	struct j6x0tp_softc *sc = arg;
367 
368 	uint8_t irr0;
369 	uint8_t phdr, touched;
370 	unsigned int steady, tremor_timeout;
371 
372 	irr0 = _reg_read_1(SH7709_IRR0);
373 	if ((irr0 & IRR0_IRQ3) == 0) {
374 #ifdef DIAGNOSTIC
375 		printf("%s: irr0 %02x?\n", device_xname(sc->sc_dev), irr0);
376 #endif
377 		return (0);
378 	}
379 
380 	if (!sc->sc_enabled) {
381 		DPRINTFN(1, ("%s: intr: !sc_enabled\n",
382 			     device_xname(sc->sc_dev)));
383 		intc_intr_disable(SH7709_INTEVT2_IRQ3);
384 		goto served;
385 	}
386 
387 
388 	/*
389 	 * Number of times the "touched" bit should be read
390 	 * consecutively.
391 	 */
392 #	define TREMOR_THRESHOLD 0x300
393 
394 	steady = 0;
395 	tremor_timeout = TREMOR_THRESHOLD * 16;	/* XXX: arbitrary */
396 	touched = PHDR_TP_PEN_DOWN;	/* we start with "touched" state */
397 
398 	do {
399 		phdr = _reg_read_1(SH7709_PHDR);
400 
401 		if ((phdr & PHDR_TP_PEN_DOWN) == touched)
402 			++steady;
403 		else {
404 			steady = 0;
405 			touched = phdr & PHDR_TP_PEN_DOWN;
406 		}
407 
408 		if (--tremor_timeout == 0) {
409 			DPRINTF(("%s: tremor timeout!\n",
410 				 device_xname(sc->sc_dev)));
411 			goto served;
412 		}
413 	} while (steady < TREMOR_THRESHOLD);
414 
415 	if (touched) {
416 		intc_intr_disable(SH7709_INTEVT2_IRQ3);
417 
418 		/*
419 		 * ADC readings are not stable yet, so schedule
420 		 * callout instead of accessing ADC from the interrupt
421 		 * handler only to immediately delay().
422 		 */
423 		callout_reset(&sc->sc_touch_ch, hz/32,
424 			      j6x0tp_start_polling, sc);
425 	} else
426 		DPRINTFN(1, ("%s: tremor\n", device_xname(sc->sc_dev)));
427   served:
428 	/* clear the interrupt (XXX: protect access?) */
429 	_reg_write_1(SH7709_IRR0, irr0 & ~IRR0_IRQ3);
430 
431 	return (1);
432 }
433 
434 
435 /*
436  * Called from the interrupt handler at spltty() upon first touch.
437  * Decide if we are going to report this touch as a mouse click/drag
438  * or as a key press.
439  */
440 static void
441 j6x0tp_start_polling(void *arg)
442 {
443 	struct j6x0tp_softc *sc = arg;
444 	uint8_t phdr;
445 	int do_mouse, do_kbd;
446 	int rawx, rawy;
447 	int icon;
448 
449 	phdr = _reg_read_1(SH7709_PHDR);
450 	if ((phdr & PHDR_TP_PEN_DOWN) == 0) {
451 		DPRINTFN(2, ("%s: start: pen is not down\n",
452 			     device_xname(sc->sc_dev)));
453 		j6x0tp_stop_polling(sc);
454 	}
455 
456 	j6x0tp_get_raw_xy(&rawx, &rawy);
457 	DPRINTFN(2, ("%s: start: %4d %4d -> ",
458 		     device_xname(sc->sc_dev), rawx, rawy));
459 
460 	do_mouse = sc->sc_enabled & J6X0TP_WSMOUSE_ENABLED;
461 #ifdef J6X0TP_WSMOUSE_EXCLUSIVE
462 	if (do_mouse)
463 		do_kbd = 0;
464 	else
465 #endif
466 		do_kbd = sc->sc_enabled & J6X0TP_WSKBD_ENABLED;
467 
468 	icon = 0;
469 	if (do_kbd)
470 		icon = j6x0tp_get_hard_icon(rawx, rawy);
471 
472 	if (icon != 0) {
473 		DPRINTFN(2, ("icon %d\n", icon));
474 		sc->sc_hard_icon = icon;
475 		wskbd_input(sc->sc_wskbddev, WSCONS_EVENT_KEY_DOWN, icon);
476 		callout_reset(&sc->sc_touch_ch, hz/32,
477 			      j6x0tp_callout_wskbd, sc);
478 	} else if (do_mouse) {
479 		DPRINTFN(2, ("mouse\n"));
480 		j6x0tp_wsmouse_input(sc, rawx, rawy);
481 		callout_reset(&sc->sc_touch_ch, hz/32,
482 			      j6x0tp_callout_wsmouse, sc);
483 	} else {
484 		DPRINTFN(2, ("ignore\n"));
485 		j6x0tp_stop_polling(sc);
486 	}
487 }
488 
489 
490 /*
491  * Re-enable touch panel interrupt.
492  * Called as spltty() when polling code detects pen-up.
493  */
494 static void
495 j6x0tp_stop_polling(struct j6x0tp_softc *sc)
496 {
497 	uint8_t irr0;
498 
499 	DPRINTFN(2, ("%s: stop\n", device_xname(sc->sc_dev)));
500 
501 	/* clear pending interrupt signal before re-enabling the interrupt */
502 	irr0 = _reg_read_1(SH7709_IRR0);
503 	if ((irr0 & IRR0_IRQ3) != 0)
504 		_reg_write_1(SH7709_IRR0, irr0 & ~IRR0_IRQ3);
505 
506 	intc_intr_enable(SH7709_INTEVT2_IRQ3);
507 }
508 
509 
510 /*
511  * We are reporting this touch as a keyboard event.
512  * Poll touch screen waiting for pen-up.
513  */
514 static void
515 j6x0tp_callout_wskbd(void *arg)
516 {
517 	struct j6x0tp_softc *sc = arg;
518 	uint8_t phdr;
519 	int s;
520 
521 	s = spltty();
522 
523 	if (!sc->sc_enabled) {
524 		DPRINTFN(1, ("%s: wskbd callout: !sc_enabled\n",
525 			     device_xname(sc->sc_dev)));
526 		splx(s);
527 		return;
528 	}
529 
530 	phdr = _reg_read_1(SH7709_PHDR);
531 	if ((phdr & PHDR_TP_PEN_DOWN) != 0) {
532 		/*
533 		 * Pen is still down, continue polling.  Wskbd's
534 		 * auto-repeat takes care of repeating the key.
535 		 */
536 		callout_schedule(&sc->sc_touch_ch, hz/32);
537 	} else {
538 		wskbd_input(sc->sc_wskbddev,
539 			    WSCONS_EVENT_KEY_UP, sc->sc_hard_icon);
540 		j6x0tp_stop_polling(sc);
541 	}
542 	splx(s);
543 }
544 
545 
546 /*
547  * We are reporting this touch as a mouse click/drag.
548  */
549 static void
550 j6x0tp_callout_wsmouse(void *arg)
551 {
552 	struct j6x0tp_softc *sc = arg;
553 	uint8_t phdr;
554 	int rawx, rawy;
555 	int s;
556 
557 	s = spltty();
558 
559 	if (!sc->sc_enabled) {
560 		DPRINTFN(1, ("%s: wsmouse callout: !sc_enabled\n",
561 			     device_xname(sc->sc_dev)));
562 		splx(s);
563 		return;
564 	}
565 
566 	phdr = _reg_read_1(SH7709_PHDR);
567 	if ((phdr & PHDR_TP_PEN_DOWN) != 0) {
568 		j6x0tp_get_raw_xy(&rawx, &rawy);
569 		j6x0tp_wsmouse_input(sc, rawx, rawy); /* mouse dragged */
570 		callout_schedule(&sc->sc_touch_ch, hz/32);
571 	} else {
572 		wsmouse_input(sc->sc_wsmousedev, 0, 0, 0, 0, 0, /* button up */
573 			      WSMOUSE_INPUT_DELTA);
574 		j6x0tp_stop_polling(sc);
575 	}
576 	splx(s);
577 }
578 
579 
580 /*
581  * Report mouse click/drag.
582  */
583 static void
584 j6x0tp_wsmouse_input(struct j6x0tp_softc *sc, int rawx, int rawy)
585 {
586 	int x, y;
587 
588 	tpcalib_trans(&sc->sc_tpcalib, rawx, rawy, &x, &y);
589 
590 	DPRINTFN(3, ("%s: %4d %4d -> %3d %3d\n",
591 		     device_xname(sc->sc_dev), rawx, rawy, x, y));
592 
593 	wsmouse_input(sc->sc_wsmousedev,
594 			1,	/* button */
595 			x, y, 0, 0,
596 			WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y);
597 }
598 
599 
600 /*
601  * Read raw X/Y coordinates from the ADC.
602  * XXX: protect accesses to SCPDR?
603  */
604 static void
605 j6x0tp_get_raw_xy(int *rawxp, int *rawyp)
606 {
607 	uint8_t scpdr;
608 
609 	/* Y axis */
610 	scpdr = _reg_read_1(SH7709_SCPDR);
611 	scpdr |=  SCPDR_TP_SCAN_ENABLE;
612 	scpdr &= ~SCPDR_TP_SCAN_Y; /* pull low to scan */
613 	_reg_write_1(SH7709_SCPDR, scpdr);
614 	delay(10);
615 
616 	*rawyp = adc_sample_channel(ADC_CHANNEL_TP_Y);
617 
618 	/* X axis */
619 	scpdr = _reg_read_1(SH7709_SCPDR);
620 	scpdr |=  SCPDR_TP_SCAN_Y;
621 	scpdr &= ~SCPDR_TP_SCAN_X; /* pull low to scan */
622 	_reg_write_1(SH7709_SCPDR, scpdr);
623 	delay(10);
624 
625 	*rawxp = adc_sample_channel(ADC_CHANNEL_TP_X);
626 
627 	/* restore SCPDR */
628 	scpdr = _reg_read_1(SH7709_SCPDR);
629 	scpdr |=  SCPDR_TP_SCAN_X;
630 	scpdr &= ~SCPDR_TP_SCAN_ENABLE;
631 	_reg_write_1(SH7709_SCPDR, scpdr);
632 }
633 
634 
635 /*
636  * Check if the (rawx, rawy) is inside one of the 4 hard icons.
637  * Return the icon number 1..4, or 0 if not inside an icon.
638  */
639 static int
640 j6x0tp_get_hard_icon(int rawx, int rawy)
641 {
642 	if (rawx <= J6X0TP_FB_RIGHT)
643 		return (0);
644 
645 	if (rawy < J6X0TP_HARD_ICON_MAX_Y(1))
646 		return (1);
647 	else if (rawy < J6X0TP_HARD_ICON_MAX_Y(2))
648 		return (2);
649 	else if (rawy < J6X0TP_HARD_ICON_MAX_Y(3))
650 		return (3);
651 	else
652 		return (4);
653 }
654 
655 
656 static int
657 j6x0tp_wsmouse_ioctl(void *arg, u_long cmd, void *data, int flag, lwp_t *l)
658 {
659 	struct j6x0tp_softc *sc = arg;
660 
661 	return hpc_tpanel_ioctl(&sc->sc_tpcalib, cmd, data, flag, l);
662 }
663 
664 
665 static int
666 j6x0tp_wskbd_ioctl(void *arg, u_long cmd, void *data, int flag, lwp_t *l)
667 {
668 	/* struct j6x0tp_softc *sc = arg; */
669 
670 	switch (cmd) {
671 	case WSKBDIO_GTYPE:
672 		*(int *)data = WSKBD_TYPE_HPC_BTN; /* may be use new type? */
673 		return (0);
674 
675 	case WSKBDIO_GETLEDS:
676 		*(int *)data = 0;
677 		return (0);
678 
679 	default:
680 		return (EPASSTHROUGH);
681 	}
682 }
683 
684 
685 static void
686 j6x0tp_wskbd_set_leds(void *arg, int leds)
687 {
688 
689 	/* nothing to do*/
690 	return;
691 }
692