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Diffstat (limited to 'xorg-server/hw/kdrive/linux/evdev.c')
-rw-r--r--xorg-server/hw/kdrive/linux/evdev.c536
1 files changed, 536 insertions, 0 deletions
diff --git a/xorg-server/hw/kdrive/linux/evdev.c b/xorg-server/hw/kdrive/linux/evdev.c
new file mode 100644
index 000000000..2eaa1e332
--- /dev/null
+++ b/xorg-server/hw/kdrive/linux/evdev.c
@@ -0,0 +1,536 @@
+/*
+ * Copyright © 2004 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <kdrive-config.h>
+#endif
+#define NEED_EVENTS
+#include <errno.h>
+#include <linux/input.h>
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include <X11/Xpoll.h>
+#include "inputstr.h"
+#include "scrnintstr.h"
+#include "kdrive.h"
+
+#define NUM_EVENTS 128
+#define ABS_UNSET -65535
+
+#define BITS_PER_LONG (sizeof(long) * 8)
+#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
+#define ISBITSET(x,y) ((x)[LONG(y)] & BIT(y))
+#define OFF(x) ((x)%BITS_PER_LONG)
+#define LONG(x) ((x)/BITS_PER_LONG)
+#define BIT(x) (1 << OFF(x))
+
+typedef struct _kevdev {
+ /* current device state */
+ int rel[REL_MAX + 1];
+ int abs[ABS_MAX + 1];
+ int prevabs[ABS_MAX + 1];
+ long key[NBITS(KEY_MAX + 1)];
+
+ /* supported device info */
+ long relbits[NBITS(REL_MAX + 1)];
+ long absbits[NBITS(ABS_MAX + 1)];
+ long keybits[NBITS(KEY_MAX + 1)];
+ struct input_absinfo absinfo[ABS_MAX + 1];
+ int max_rel;
+ int max_abs;
+
+ int fd;
+} Kevdev;
+
+static void
+EvdevPtrBtn (KdPointerInfo *pi, struct input_event *ev)
+{
+ int flags = KD_MOUSE_DELTA | pi->buttonState;
+
+ if (ev->code >= BTN_MOUSE && ev->code < BTN_JOYSTICK) {
+ switch (ev->code) {
+ case BTN_LEFT:
+ if (ev->value == 1)
+ flags |= KD_BUTTON_1;
+ else
+ flags &= ~KD_BUTTON_1;
+ break;
+ case BTN_MIDDLE:
+ if (ev->value == 1)
+ flags |= KD_BUTTON_2;
+ else
+ flags &= ~KD_BUTTON_2;
+ break;
+ case BTN_RIGHT:
+ if (ev->value == 1)
+ flags |= KD_BUTTON_3;
+ else
+ flags &= ~KD_BUTTON_3;
+ break;
+ default:
+ /* Unknow button */
+ break;
+ }
+
+ KdEnqueuePointerEvent (pi, flags, 0, 0, 0);
+ }
+}
+static void
+EvdevPtrMotion (KdPointerInfo *pi, struct input_event *ev)
+{
+ Kevdev *ke = pi->driverPrivate;
+ int i;
+ int flags = KD_MOUSE_DELTA | pi->buttonState;
+
+ for (i = 0; i <= ke->max_rel; i++)
+ if (ke->rel[i])
+ {
+ int a;
+ for (a = 0; a <= ke->max_rel; a++)
+ {
+ if (ISBITSET (ke->relbits, a))
+ {
+ if (a == 0)
+ KdEnqueuePointerEvent(pi, flags, ke->rel[a], 0, 0);
+ else if (a == 1)
+ KdEnqueuePointerEvent(pi, flags, 0, ke->rel[a], 0);
+ }
+ ke->rel[a] = 0;
+ }
+ break;
+ }
+ for (i = 0; i < ke->max_abs; i++)
+ if (ke->abs[i] != ke->prevabs[i])
+ {
+ int a;
+ ErrorF ("abs");
+ for (a = 0; a <= ke->max_abs; a++)
+ {
+ if (ISBITSET (ke->absbits, a))
+ ErrorF (" %d=%d", a, ke->abs[a]);
+ ke->prevabs[a] = ke->abs[a];
+ }
+ ErrorF ("\n");
+ break;
+ }
+
+ if (ev->code == REL_WHEEL) {
+ for (i = 0; i < abs (ev->value); i++)
+ {
+ if (ev->value > 0)
+ flags |= KD_BUTTON_4;
+ else
+ flags |= KD_BUTTON_5;
+
+ KdEnqueuePointerEvent (pi, flags, 0, 0, 0);
+
+ if (ev->value > 0)
+ flags &= ~KD_BUTTON_4;
+ else
+ flags &= ~KD_BUTTON_5;
+
+ KdEnqueuePointerEvent (pi, flags, 0, 0, 0);
+ }
+ }
+
+}
+
+static void
+EvdevPtrRead (int evdevPort, void *closure)
+{
+ KdPointerInfo *pi = closure;
+ Kevdev *ke = pi->driverPrivate;
+ int i;
+ struct input_event events[NUM_EVENTS];
+ int n;
+
+ n = read (evdevPort, &events, NUM_EVENTS * sizeof (struct input_event));
+ if (n <= 0) {
+ if (errno == ENODEV)
+ DeleteInputDeviceRequest(pi->dixdev);
+ return;
+ }
+
+ n /= sizeof (struct input_event);
+ for (i = 0; i < n; i++)
+ {
+ switch (events[i].type) {
+ case EV_SYN:
+ break;
+ case EV_KEY:
+ EvdevPtrBtn (pi, &events[i]);
+ break;
+ case EV_REL:
+ ke->rel[events[i].code] += events[i].value;
+ EvdevPtrMotion (pi, &events[i]);
+ break;
+ case EV_ABS:
+ ke->abs[events[i].code] = events[i].value;
+ EvdevPtrMotion (pi, &events[i]);
+ break;
+ }
+ }
+}
+
+char *kdefaultEvdev[] = {
+ "/dev/input/event0",
+ "/dev/input/event1",
+ "/dev/input/event2",
+ "/dev/input/event3",
+};
+
+#define NUM_DEFAULT_EVDEV (sizeof (kdefaultEvdev) / sizeof (kdefaultEvdev[0]))
+
+static Status
+EvdevPtrInit (KdPointerInfo *pi)
+{
+ int i;
+ int fd;
+
+ if (!pi->path) {
+ for (i = 0; i < NUM_DEFAULT_EVDEV; i++) {
+ fd = open (kdefaultEvdev[i], 2);
+ if (fd >= 0) {
+ pi->path = KdSaveString (kdefaultEvdev[i]);
+ break;
+ }
+ }
+ }
+ else {
+ fd = open (pi->path, O_RDWR);
+ if (fd < 0) {
+ ErrorF("Failed to open evdev device %s\n", pi->path);
+ return BadMatch;
+ }
+ }
+
+ close(fd);
+
+ pi->name = KdSaveString("Evdev mouse");
+
+ return Success;
+}
+
+static Status
+EvdevPtrEnable (KdPointerInfo *pi)
+{
+ int fd;
+
+ if (!pi || !pi->path)
+ return BadImplementation;
+
+ fd = open(pi->path, 2);
+ if (fd < 0)
+ return BadMatch;
+
+ unsigned long ev[NBITS(EV_MAX)];
+ Kevdev *ke;
+
+ if (ioctl (fd, EVIOCGBIT(0 /*EV*/, sizeof (ev)), ev) < 0)
+ {
+ perror ("EVIOCGBIT 0");
+ close (fd);
+ return BadMatch;
+ }
+ ke = xalloc (sizeof (Kevdev));
+ if (!ke)
+ {
+ close (fd);
+ return BadAlloc;
+ }
+ memset (ke, '\0', sizeof (Kevdev));
+ if (ISBITSET (ev, EV_KEY))
+ {
+ if (ioctl (fd, EVIOCGBIT (EV_KEY, sizeof (ke->keybits)),
+ ke->keybits) < 0)
+ {
+ perror ("EVIOCGBIT EV_KEY");
+ xfree (ke);
+ close (fd);
+ return BadMatch;
+ }
+ }
+ if (ISBITSET (ev, EV_REL))
+ {
+ if (ioctl (fd, EVIOCGBIT (EV_REL, sizeof (ke->relbits)),
+ ke->relbits) < 0)
+ {
+ perror ("EVIOCGBIT EV_REL");
+ xfree (ke);
+ close (fd);
+ return BadMatch;
+ }
+ for (ke->max_rel = REL_MAX; ke->max_rel >= 0; ke->max_rel--)
+ if (ISBITSET(ke->relbits, ke->max_rel))
+ break;
+ }
+ if (ISBITSET (ev, EV_ABS))
+ {
+ int i;
+
+ if (ioctl (fd, EVIOCGBIT (EV_ABS, sizeof (ke->absbits)),
+ ke->absbits) < 0)
+ {
+ perror ("EVIOCGBIT EV_ABS");
+ xfree (ke);
+ close (fd);
+ return BadMatch;
+ }
+ for (ke->max_abs = ABS_MAX; ke->max_abs >= 0; ke->max_abs--)
+ if (ISBITSET(ke->absbits, ke->max_abs))
+ break;
+ for (i = 0; i <= ke->max_abs; i++)
+ {
+ if (ISBITSET (ke->absbits, i))
+ if (ioctl (fd, EVIOCGABS(i), &ke->absinfo[i]) < 0)
+ {
+ perror ("EVIOCGABS");
+ break;
+ }
+ ke->prevabs[i] = ABS_UNSET;
+ }
+ if (i <= ke->max_abs)
+ {
+ xfree (ke);
+ close (fd);
+ return BadValue;
+ }
+ }
+ if (!KdRegisterFd (fd, EvdevPtrRead, pi)) {
+ xfree (ke);
+ close (fd);
+ return BadAlloc;
+ }
+ pi->driverPrivate = ke;
+ ke->fd = fd;
+
+ return Success;
+}
+
+static void
+EvdevPtrDisable (KdPointerInfo *pi)
+{
+ Kevdev *ke;
+
+ ke = pi->driverPrivate;
+
+ if (!pi || !pi->driverPrivate)
+ return;
+
+ KdUnregisterFd (pi, ke->fd, TRUE);
+ xfree (ke);
+ pi->driverPrivate = 0;
+}
+
+static void
+EvdevPtrFini (KdPointerInfo *pi)
+{
+}
+
+
+/*
+ * Evdev keyboard functions
+ */
+
+static void
+readMapping (KdKeyboardInfo *ki)
+{
+ int minScanCode, maxScanCode;
+
+ if (!ki)
+ return;
+
+ minScanCode = 0;
+ maxScanCode = 193;
+
+ ki->keySyms.mapWidth = 2;
+
+ ki->minScanCode = minScanCode;
+ ki->maxScanCode = maxScanCode;
+}
+
+static void
+EvdevKbdRead (int evdevPort, void *closure)
+{
+ KdKeyboardInfo *ki = closure;
+ struct input_event events[NUM_EVENTS];
+ int i, n;
+
+ n = read (evdevPort, &events, NUM_EVENTS * sizeof (struct input_event));
+ if (n <= 0) {
+ if (errno == ENODEV)
+ DeleteInputDeviceRequest(ki->dixdev);
+ return;
+ }
+
+ n /= sizeof (struct input_event);
+ for (i = 0; i < n; i++)
+ {
+ if (events[i].type == EV_KEY)
+ KdEnqueueKeyboardEvent (ki, events[i].code, !events[i].value);
+/* FIXME: must implement other types of events
+ else
+ ErrorF("Event type (%d) not delivered\n", events[i].type);
+*/
+ }
+}
+
+static Status
+EvdevKbdInit (KdKeyboardInfo *ki)
+{
+ int fd;
+
+ if (!ki->path) {
+ ErrorF("Couldn't find evdev device path\n");
+ return BadValue;
+ }
+ else {
+ fd = open (ki->path, O_RDWR);
+ if (fd < 0) {
+ ErrorF("Failed to open evdev device %s\n", ki->path);
+ return BadMatch;
+ }
+ }
+
+ close (fd);
+
+ ki->name = KdSaveString("Evdev keyboard");
+
+ readMapping(ki);
+
+ return Success;
+}
+
+static Status
+EvdevKbdEnable (KdKeyboardInfo *ki)
+{
+ unsigned long ev[NBITS(EV_MAX)];
+ Kevdev *ke;
+ int fd;
+
+ if (!ki || !ki->path)
+ return BadImplementation;
+
+ fd = open(ki->path, O_RDWR);
+ if (fd < 0)
+ return BadMatch;
+
+ if (ioctl (fd, EVIOCGBIT(0 /*EV*/, sizeof (ev)), ev) < 0) {
+ perror ("EVIOCGBIT 0");
+ close (fd);
+ return BadMatch;
+ }
+
+ ke = xalloc (sizeof (Kevdev));
+ if (!ke) {
+ close (fd);
+ return BadAlloc;
+ }
+ memset (ke, '\0', sizeof (Kevdev));
+
+ if (!KdRegisterFd (fd, EvdevKbdRead, ki)) {
+ xfree (ke);
+ close (fd);
+ return BadAlloc;
+ }
+ ki->driverPrivate = ke;
+ ke->fd = fd;
+
+ return Success;
+}
+
+static void
+EvdevKbdLeds (KdKeyboardInfo *ki, int leds)
+{
+/* struct input_event event;
+ Kevdev *ke;
+
+ ki->driverPrivate = ke;
+
+ memset(&event, 0, sizeof(event));
+
+ event.type = EV_LED;
+ event.code = LED_CAPSL;
+ event.value = leds & (1 << 0) ? 1 : 0;
+ write(ke->fd, (char *) &event, sizeof(event));
+
+ event.type = EV_LED;
+ event.code = LED_NUML;
+ event.value = leds & (1 << 1) ? 1 : 0;
+ write(ke->fd, (char *) &event, sizeof(event));
+
+ event.type = EV_LED;
+ event.code = LED_SCROLLL;
+ event.value = leds & (1 << 2) ? 1 : 0;
+ write(ke->fd, (char *) &event, sizeof(event));
+
+ event.type = EV_LED;
+ event.code = LED_COMPOSE;
+ event.value = leds & (1 << 3) ? 1 : 0;
+ write(ke->fd, (char *) &event, sizeof(event));
+*/
+}
+
+static void
+EvdevKbdBell (KdKeyboardInfo *ki, int volume, int frequency, int duration)
+{
+}
+
+static void
+EvdevKbdDisable (KdKeyboardInfo *ki)
+{
+ Kevdev *ke;
+
+ ke = ki->driverPrivate;
+
+ if (!ki || !ki->driverPrivate)
+ return;
+
+ KdUnregisterFd (ki, ke->fd, TRUE);
+ xfree (ke);
+ ki->driverPrivate = 0;
+}
+
+static void
+EvdevKbdFini (KdKeyboardInfo *ki)
+{
+}
+
+KdPointerDriver LinuxEvdevMouseDriver = {
+ "evdev",
+ EvdevPtrInit,
+ EvdevPtrEnable,
+ EvdevPtrDisable,
+ EvdevPtrFini,
+ NULL,
+};
+
+KdKeyboardDriver LinuxEvdevKeyboardDriver = {
+ "evdev",
+ EvdevKbdInit,
+ EvdevKbdEnable,
+ EvdevKbdLeds,
+ EvdevKbdBell,
+ EvdevKbdDisable,
+ EvdevKbdFini,
+ NULL,
+};
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