Move existing boards into subdits split per arch

1 files changed, 0 insertions, 497 deletions

diff --git a/os/mpc/devtouch.c b/os/mpc/devtouch.c
deleted file mode 100644
index b11aecc8..00000000
--- a/os/mpc/devtouch.c
+++ /dev/null
@@ -1,497 +0,0 @@
-#include "u.h"
-#include "../port/lib.h"
-#include "mem.h"
-#include "dat.h"
-#include "fns.h"
-#include "io.h"
-#include "../port/error.h"
-
-#define	DPRINT	if(0)print
-#define	THREEBUT	0	/* !=0, enable 3-button emulation (see below) */
-
-/*
- * DynaPro touch panel and Maxim MAX192 A/D converter on
- * York Electronics Centre's BRD/98/024 (Version A) interface,
- * accessed via mpc8xx SPI interface (see spi.c).
- *
- * The highest level of the driver is derived from the ARM/UCB touch panel driver,
- * simplified because of the differences between the panels.
- */
-
-/*
- * Values determined by interface board
- */
-enum {
-	/* MAX192 control words */
-	MeasureX =	(1<<7)|(0<<6)|(1<<3)|(1<<2)|3,	/* start, channel 0, unipolar, single-ended, external clock */
-	MeasureY =	(1<<7)|(1<<6)|(1<<3)|(1<<2)|3,	/* start, channel 1, unipolar, single-ended, external clock */
-
-	/* port B bits */
-	ADselect = IBIT(16),	/* chip select to MAX192, active low */
-
-	/* port C bits */
-	Xenable =	1<<2,	/* PC13: TOUCH_XEN, active low */
-	Yenable =	1<<3,	/* PC12: TOUCH_YEN, active low */
-	Touched = 1<<10,	/* PC5: contact detect, active low */
-
-	/* interrupt control via port C */
-	TouchIRQ=	2,	/* parallel i/o - PC5 */
-	TouchEnable=	1<<TouchIRQ,	/* mask for cimr */
-
-	/* other parameters */
-	Nconverge =	10,	/* maximum iterations for convergence */
-	MaxDelta =	2,	/* acceptable change in X/Y between iterations */
-};
-
-/*
- * ADC interface via SPI (see MAX192 data sheet)
- *	select the ADC
- *	send 8-bit control word and two zero bytes to clock the conversion
- *	receive three data bytes
- *	deselect the ADC and return the result
- */
-static int
-getcoord(int cw)
-{
-	uchar tbuf[3], rbuf[3];
-	IMM *io;
-	int nr;
-
-	tbuf[0] = cw;
-	tbuf[1] = 0;
-	tbuf[2] = 0;
-	io = ioplock();
-	io->pbdat &= ~ADselect;
-	iopunlock();
-	nr = spioutin(tbuf, sizeof(tbuf), rbuf);
-	io = ioplock();
-	io->pbdat |= ADselect;
-	iopunlock();
-	if(nr != 3)
-		return -1;
-	return ((rbuf[1]<<8)|rbuf[2])>>5;
-}
-
-/*
- * keep reading the a/d until the value stabilises
- */
-static int
-dejitter(int enable, int cw)
-{
-	int i, diff, prev, v;
-	IMM *io;
-
-	io = ioplock();
-	io->pcdat &= ~enable;	/* active low */
-	iopunlock();
-
-	i = 0;
-	v = getcoord(cw);
-	do{
-		prev = v;
-		v = getcoord(cw);
-		diff = v - prev;
-		if(diff < 0)
-			diff = -diff;
-	}while(diff >= MaxDelta && ++i <= Nconverge);
-
-	io = ioplock();
-	io->pcdat |= enable;
-	iopunlock();
-	return v;
-}
-
-static void
-adcreset(void)
-{
-	IMM *io;
-
-	/* select port pins */
-	io = ioplock();
-	io->pcdir &= ~(Xenable|Yenable);	/* ensure set to input before changing state */
-	io->pcpar &= ~(Xenable|Yenable);
-	io->pcdat |= Xenable|Yenable;
-	io->pcdir |= Xenable;	/* change enable bits to output one at a time to avoid both being low at once (could damage panel) */
-	io->pcdat |= Xenable;	/* ensure it's high after making it an output */
-	io->pcdir |= Yenable;
-	io->pcdat |= Yenable;	/* ensure it's high after making it an output */
-	io->pcso &= ~(Xenable|Yenable);
-	io->pbdat |= ADselect;
-	io->pbpar &= ~ADselect;
-	io->pbdir |= ADselect;
-	iopunlock();
-}
-
-/*
- * high-level touch panel interface
- */
-
-/* to and from fixed point */
-#define	FX(n)	((n)<<16)
-#define	XF(v)		((v)>>16)
-
-typedef struct Touch Touch;
-
-struct Touch {
-	Lock;
-	Rendez	r;
-	int	m[2][3];	/* transformation matrix */
-	int	rate;
-	int	down;
-	int	raw_count;
-	int	valid_count;
-	int	wake_time;
-	int	sleep_time;
-};
-
-static Touch touch = {
-	{0},
-	.r {0},
-	.m {{FX(1), 0, 0},{0, FX(1), 0}},	/* default is 1:1 */
-	.rate 20,	/* milliseconds */
-};
-
-/*
- * panel-touched state and interrupt
- */
-
-static int
-touching(void)
-{
-	eieio();
-	return (m->iomem->pcdat & Touched) == 0;
-}
-
-static int
-ispendown(void*)
-{
-	return touch.down || touching();
-}
-
-static void
-touchintr(Ureg*, void*)
-{
-	if((m->iomem->pcdat & Touched) == 0){
-		m->iomem->cimr &= ~TouchEnable;	/* mask interrupts when reading pen */
-		touch.down = 1;
-		wakeup(&touch.r);
-	}
-}
-
-static void
-touchenable(void)
-{
-	IMM *io;
- 
-	io = ioplock();
-	io->cimr |= TouchEnable;
-	iopunlock();
-}
-
-/*
- * touchctl commands:
- *	X a b c	- set X transformation
- *	Y d e f	- set Y transformation
- *	s<delay>		- set sample delay in millisec per sample
- *	r<delay>		- set read delay in microsec
- *	R<l2nr>			- set log2 of number of readings to average
- */
-
-enum{
-	Qdir,
-	Qtouchctl,
-	Qtouchstat,
-	Qtouch,
-};
-
-Dirtab touchdir[]={
-	".",	{Qdir, 0, QTDIR}, 0, 0555,
-	"touchctl",	{Qtouchctl, 0}, 	0,	0666,
-	"touchstat",	{Qtouchstat, 0}, 	0,	0444,
-	"touch",	{Qtouch, 0},	0,	0444,
-};
-
-static int
-ptmap(int *m, int x, int y)
-{
-	return XF(m[0]*x + m[1]*y + m[2]);
-}
-
-/*
- * read a point from the touch panel;
- * returns true iff the point is valid, otherwise x, y aren't changed
- */
-static int
-touchreadxy(int *fx, int *fy)
-{
-	int rx, ry;
-
-	if(touching()){
-		rx = dejitter(Xenable, MeasureX);
-		ry = dejitter(Yenable, MeasureY);
-		microdelay(40);
-		if(rx >=0 && ry >= 0){
-			if(0)
-				print("touch %d %d\n", rx, ry);
-			*fx = ptmap(touch.m[0], rx, ry);
-			*fy = ptmap(touch.m[1], rx, ry);
-			touch.raw_count++;
-			return 1;
-		}
-	}
-	return 0;
-}
-
-#define	timer_start()	0	/* could use TBL if necessary */
-#define	tmr2us(n)	0
-
-static void
-touchproc(void*)
-{
-	int b, i, x, y;
-	ulong t1, t2;
-
-	t1 = timer_start();
-	b = 1;
-	for(;;) {
-		//setpri(PriHi);
-		do{
-			touch.down = 0;
-			touch.wake_time += (t2 = timer_start())-t1;
-			touchenable();
-			sleep(&touch.r, ispendown, nil);
-			touch.sleep_time += (t1 = timer_start())-t2;
-		}while(!touchreadxy(&x, &y));
-
-		/* 640x480-specific 3-button emulation hack: */
-		if(THREEBUT){
-			if(y > 481) { 
-				b = ((639-x) >> 7);
-				continue;
-			} else if(y < -2) {
-				b = (x >> 7)+3;
-				continue;
-			}
-		}
-
-		DPRINT("#%d %d", x, y);
-		mousetrack(b, x, y, 0);
-		setpri(PriNormal);
-		while(touching()) {
-			for(i=0; i<3; i++)
-				if(touchreadxy(&x, &y)) {
-					DPRINT("*%d %d", x, y);
-					mousetrack(b, x, y, 0);
-					break;
-				}
-			touch.wake_time += (t2 = timer_start())-t1;
-			tsleep(&touch.r, return0, nil, touch.rate);
-			touch.sleep_time += (t1 = timer_start())-t2;
-		}
-		mousetrack(0, x, y, 0);
-		b = 1;	/* go back to just button one for next press */
-	}
-}
-
-static void
-touchreset(void)
-{
-	IMM *io;
-
-	spireset();
-	adcreset();
-	intrenable(VectorCPIC+TouchIRQ, touchintr, &touch, BUSUNKNOWN, "touch");
-
-	/* set i/o pin to interrupt when panel touched */
-	io = ioplock();
-	io->pcdat &= ~Touched;
-	io->pcpar &= ~Touched;
-	io->pcdir &= ~Touched;
-	io->pcso &= ~Touched;
-	io->pcint |= Touched;	/* high-to-low trigger */
-	io->cimr &= ~TouchEnable;	/* touchproc will enable when ready */
-	iopunlock();
-}
-
-static void
-touchinit(void)
-{
-	static int done;
-
-	if(!done){
-		done = 1;
-		kproc( "touchscreen", touchproc, nil, 0);
-	}
-}
-
-static Chan*
-touchattach(char* spec)
-{
-	return devattach('T', spec);
-}
-
-static Walkqid*
-touchwalk(Chan* c, Chan *nc, char **name, int nname)
-{
-	return devwalk(c, nc, name, nname, touchdir, nelem(touchdir), devgen);
-}
-
-static int
-touchstat(Chan* c, uchar* dp, int n)
-{
-	return devstat(c, dp, n, touchdir, nelem(touchdir), devgen);
-}
-
-static Chan*
-touchopen(Chan* c, int omode)
-{
-	omode = openmode(omode);
-	switch((ulong)c->qid.path){
-	case Qtouchctl:
-	case Qtouchstat:
-		if(!iseve())
-			error(Eperm);
-		break;
-	}
-	return devopen(c, omode, touchdir, nelem(touchdir), devgen);
-}
-
-static void	 
-touchclose(Chan*)
-{
-}
-
-static long	 
-touchread(Chan* c, void* buf, long n, vlong offset)
-{
-	char *tmp;
-	int x, y;
-
-	if(c->qid.type & QTDIR)
-		return devdirread(c, buf, n, touchdir, nelem(touchdir), devgen);
-
-	tmp = malloc(READSTR);
-	if(waserror()){
-		free(tmp);
-		nexterror();
-	}
-	switch((ulong)c->qid.path){
-	case Qtouch:
-		if(!touchreadxy(&x, &y))
-			x = y = -1;
-		snprint(tmp, READSTR, "%d %d", x, y);
-		break;
-	case Qtouchctl:
-		snprint(tmp, READSTR, "s%d\nr%d\nR%d\nX %d %d %d\nY %d %d %d\n",
-			touch.rate, 0, 1,
-			touch.m[0][0], touch.m[0][1], touch.m[0][2],
-			touch.m[1][0], touch.m[1][1], touch.m[1][2]);
-		break;
-	case Qtouchstat:
-		snprint(tmp, READSTR, "%d %d\n%d %d\n",
-			touch.raw_count, touch.valid_count, tmr2us(touch.sleep_time), tmr2us(touch.wake_time));
-		touch.raw_count = 0;
-		touch.valid_count = 0;
-		touch.sleep_time = 0;
-		touch.wake_time = 0;
-		break;
-	default:
-		error(Ebadarg);
-		return 0;
-	}
-	n = readstr(offset, buf, n, tmp);
-	poperror();
-	free(tmp);
-	return n;
-}
-
-static void
-dotouchwrite(Chan *c, char *buf)
-{
-	char *field[8];
-	int nf, cmd, pn, m[3], n;
-
-	nf = getfields(buf, field, nelem(field), 1, " \t\n");
-	if(nf <= 0)
-		return;
-	switch((ulong)c->qid.path){
-	case Qtouchctl:
-		cmd = *(field[0])++;
-		pn = *field[0] == 0;
-		switch(cmd) {
-		case 's':
-			n = strtol(field[pn], 0, 0);
-			if(n <= 0)
-				error(Ebadarg);
-			touch.rate = n;
-			break;
-		case 'r':
-			/* touch read delay */
-			break;
-		case 'X':
-		case 'Y':
-			if(nf < pn+2)
-				error(Ebadarg);
-			m[0] = strtol(field[pn], 0, 0);
-			m[1] = strtol(field[pn+1], 0, 0);
-			m[2] = strtol(field[pn+2], 0, 0);
-			memmove(touch.m[cmd=='Y'], m, sizeof(touch.m[0]));
-			break;
-		case 'c':
-		case 'C':
-		case 'v':
-		case 't':
-		case 'e':
-			/* not used */
-			/* break; */
-		default:
-			error(Ebadarg);
-		}
-		break;
-	default:
-		error(Ebadarg);
-		return;
-	}
-}
-
-static long	 
-touchwrite(Chan* c, void* vp, long n, vlong)
-{
-	char buf[64];
-	char *cp, *a;
-	int n0 = n;
-	int bn;
-
-	a = vp;
-	while(n) {
-		bn = (cp = memchr(a, '\n', n))!=nil ? cp-a+1 : n;
-		n -= bn;
-		bn = bn > sizeof(buf)-1 ? sizeof(buf)-1 : bn;
-		memmove(buf, a, bn);
-		buf[bn] = '\0';
-		a = cp;
-		dotouchwrite(c, buf);
-	}
-	return n0-n;
-}
-
-Dev touchdevtab = {
-	'T',
-	"touch",
-
-	touchreset,
-	touchinit,
-	devshutdown,
-	touchattach,
-	touchwalk,
-	touchstat,
-	touchopen,
-	devcreate,
-	touchclose,
-	touchread,
-	devbread,
-	touchwrite,
-	devbwrite,
-	devremove,
-	devwstat,
-};