diff options
Diffstat (limited to 'xorg-server/hw/kdrive/linux/tslib.c')
| -rw-r--r-- | xorg-server/hw/kdrive/linux/tslib.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/xorg-server/hw/kdrive/linux/tslib.c b/xorg-server/hw/kdrive/linux/tslib.c new file mode 100644 index 000000000..371aeced9 --- /dev/null +++ b/xorg-server/hw/kdrive/linux/tslib.c @@ -0,0 +1,193 @@ +/* + * TSLIB based touchscreen driver for KDrive + * Porting to new input API and event queueing by Daniel Stone. + * Derived from ts.c by Keith Packard + * Derived from ps2.c by Jim Gettys + * + * Copyright © 1999 Keith Packard + * Copyright © 2000 Compaq Computer Corporation + * Copyright © 2002 MontaVista Software Inc. + * Copyright © 2005 OpenedHand Ltd. + * Copyright © 2006 Nokia Corporation + * + * 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 the authors and/or copyright holders + * not be used in advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. The authors and/or + * copyright holders make no representations about the suitability of this + * software for any purpose. It is provided "as is" without express or + * implied warranty. + * + * THE AUTHORS AND/OR COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD + * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS, IN NO EVENT SHALL THE AUTHORS AND/OR COPYRIGHT HOLDERS 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. + */ + + +#ifdef HAVE_KDRIVE_CONFIG_H +#include <kdrive-config.h> +#endif + +#define NEED_EVENTS +#include <X11/X.h> +#include <X11/Xproto.h> +#include <X11/Xpoll.h> +#include "inputstr.h" +#include "scrnintstr.h" +#include "kdrive.h" +#include <sys/ioctl.h> +#include <tslib.h> +#include <dirent.h> +#include <linux/input.h> + +struct TslibPrivate { + int fd; + int lastx, lasty; + struct tsdev *tsDev; + void (*raw_event_hook)(int x, int y, int pressure, void *closure); + void *raw_event_closure; + int phys_screen; +}; + + +static void +TsRead (int fd, void *closure) +{ + KdPointerInfo *pi = closure; + struct TslibPrivate *private = pi->driverPrivate; + struct ts_sample event; + long x = 0, y = 0; + unsigned long flags; + + if (private->raw_event_hook) { + while (ts_read_raw(private->tsDev, &event, 1) == 1) + private->raw_event_hook (event.x, event.y, event.pressure, + private->raw_event_closure); + return; + } + + while (ts_read(private->tsDev, &event, 1) == 1) { + if (event.pressure) { + flags = KD_BUTTON_1; + + /* + * Here we test for the touch screen driver actually being on the + * touch screen, if it is we send absolute coordinates. If not, + * then we send delta's so that we can track the entire vga screen. + */ + if (KdCurScreen == private->phys_screen) { + x = event.x; + y = event.y; + } else { + flags |= KD_MOUSE_DELTA; + if ((private->lastx == 0) || (private->lasty == 0)) { + x = event.x; + y = event.y; + } else { + x = event.x - private->lastx; + y = event.y - private->lasty; + } + } + private->lastx = x; + private->lasty = y; + } else { + flags = 0; + x = private->lastx; + y = private->lasty; + } + + KdEnqueuePointerEvent (pi, flags, x, y, event.pressure); + } +} + +static Status +TslibEnable (KdPointerInfo *pi) +{ + struct TslibPrivate *private = pi->driverPrivate; + + private->raw_event_hook = NULL; + private->raw_event_closure = NULL; + private->tsDev = ts_open(pi->path, 0); + private->fd = ts_fd(private->tsDev); + if (!private->tsDev || ts_config(private->tsDev) || private->fd < 0) { + ErrorF("[tslib/TslibEnable] failed to open %s\n", pi->path); + if (private->fd >= 0) + close(private->fd); + return BadAlloc; + } + + KdRegisterFd(private->fd, TsRead, pi); + + return Success; +} + + +static void +TslibDisable (KdPointerInfo *pi) +{ + struct TslibPrivate *private = pi->driverPrivate; + + if (private->fd) + KdUnregisterFd(pi, private->fd, TRUE); + + if (private->tsDev) + ts_close(private->tsDev); + + private->fd = 0; + private->tsDev = NULL; +} + + +static Status +TslibInit (KdPointerInfo *pi) +{ + int fd = 0, i = 0; + DIR *inputdir = NULL; + struct dirent *inputent = NULL; + struct tsdev *tsDev = NULL; + struct TslibPrivate *private = NULL; + + if (!pi || !pi->dixdev) + return !Success; + + pi->driverPrivate = (struct TslibPrivate *) + xcalloc(sizeof(struct TslibPrivate), 1); + if (!pi->driverPrivate) + return !Success; + + private = pi->driverPrivate; + /* hacktastic */ + private->phys_screen = 0; + pi->nAxes = 3; + pi->name = KdSaveString("Touchscreen"); + pi->inputClass = KD_TOUCHSCREEN; + + return Success; +} + + +static void +TslibFini (KdPointerInfo *pi) +{ + if (pi->driverPrivate) { + xfree(pi->driverPrivate); + pi->driverPrivate = NULL; + } +} + + +KdPointerDriver TsDriver = { + "tslib", + TslibInit, + TslibEnable, + TslibDisable, + TslibFini, + NULL, +}; |