diff options
Diffstat (limited to 'hw/kdrive/itsy/ts.c')
| -rw-r--r-- | hw/kdrive/itsy/ts.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/hw/kdrive/itsy/ts.c b/hw/kdrive/itsy/ts.c new file mode 100644 index 000000000..24bf24ecd --- /dev/null +++ b/hw/kdrive/itsy/ts.c @@ -0,0 +1,209 @@ +/* + * $Id$ + * + * Copyright © 1999 Keith Packard + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ +/* $XFree86: $ */ + +#define NEED_EVENTS +#include "itsy.h" +#include "Xproto.h" +#include "inputstr.h" +#include "Xpoll.h" + +int +itsyTsReadBytes (int fd, char *buf, int len, int min) +{ + int n, tot; + fd_set set; + struct timeval tv; + + tot = 0; + while (len) + { + n = read (fd, buf, len); + if (n > 0) + { + tot += n; + buf += n; + len -= n; + } + if (tot % min == 0) + break; + FD_ZERO (&set); + FD_SET (fd, &set); + tv.tv_sec = 0; + tv.tv_usec = 100 * 1000; + n = select (fd + 1, &set, 0, 0, &tv); + if (n <= 0) + break; + } + return tot; +} + +void +itsyTsRead (int tsPort) +{ + ts_event event; + long buf[3]; + int n; + long pressure; + long x, y; + unsigned long flags; + unsigned long buttons; + + n = itsyTsReadBytes (tsPort, (char *) &event, + sizeof (event), sizeof (event)); + if (n == sizeof (event)) + { + if (event.pressure) + { + flags = KD_BUTTON_1; + x = event.point.x; + y = event.point.y; + } + else + { + flags = KD_MOUSE_DELTA; + x = 0; + y = 0; + } + KdEnqueueMouseEvent (flags, x, y); + } +} + +#if 0 +#define ITSY_DEBUG_LOW 1 + +// +// Touch screen parameters are stored +// in the flash. This code is taken from 'wm1'. +// +void itsySetTouchCalibration (int mou_filedsc, + int xs, int xt, int ys, int yt, int xys) +{ + int k, ibuf[10]; + + ibuf[0] = xs; + ibuf[1] = xt; + ibuf[2] = ys; + ibuf[3] = yt; + ibuf[4] = xys; + if ((k=ioctl(mou_filedsc, TS_SET_CALM, ibuf)) != 0) { + fprintf(stderr, "ERROR: ioctl TS_SET_CALM returns %d\n", k); + } +} + + +int itsyReadFlashBlock(int location, signed char *data, int dbytes) +{ + int offset, bytes; + int flashfd; + + flashfd = open("/dev/flash1", O_RDONLY); + if (flashfd < 0) return(0); + + offset = lseek(flashfd, location, SEEK_SET); + if (offset != location) { + close(flashfd); + return(0); + } + + bytes = read(flashfd, data, dbytes); + if (bytes != dbytes) { + close(flashfd); + return(0); + } + + close(flashfd); + return(1); +} + +/**********************************************************************/ +#define RAMSIZE (0x400000) +#define MONITOR_BLOCKSIZE (32) +/**********************************************************************/ + +/* code for storing calibration into flash */ + +#define CALIBRATE_BLOCKSIZE (32) +#define CALIBRATE_OFFSET (RAMSIZE-MONITOR_BLOCKSIZE-CALIBRATE_BLOCKSIZE) +#define CALIBRATE_MAGIC_NUM (0x0babedee) + + +static int check_if_calibrated_and_set(int mou_filedsc) +{ + signed char cal_data[CALIBRATE_BLOCKSIZE]; + int *iptr; + + if (itsyReadFlashBlock(CALIBRATE_OFFSET, + cal_data, CALIBRATE_BLOCKSIZE) == 0) { + if ( ITSY_DEBUG_LOW ) { + fprintf(stderr,"unable to read calibration data for touch screen\n"); + } + return(0); + } + + iptr = (int *) cal_data; + if (iptr[0] == CALIBRATE_MAGIC_NUM) { + if ( ITSY_DEBUG_LOW ) { + fprintf(stderr,"Calibrating touch screen using %d, %d, %d, %d, %d\n", + iptr[1], iptr[2], iptr[3], iptr[4], iptr[5]); + } + itsySetTouchCalibration(mou_filedsc, iptr[1], iptr[2], iptr[3], iptr[4], iptr[5]); + return(1); + } + else { + if ( ITSY_DEBUG_LOW ) { + fprintf(stderr,"Couldn't calibrate screen\n"); + } + return(0); + } +} +#endif + +int +itsyTsInit (void) +{ + int tsPort; + + tsPort = open ("/dev/ts", 0); + fprintf (stderr, "tsPort %d\n", tsPort); +#if 0 + if (tsPort >= 0) + check_if_calibrated_and_set (tsPort); +#endif + return tsPort; +} + +void +itsyTsFini (int tsPort) +{ + if (tsPort >= 0) + close (tsPort); +} + +KdMouseFuncs itsyTsMouseFuncs = { + itsyTsInit, + itsyTsRead, + itsyTsFini +}; + |