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/***************************************************************************
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* addon-keyboard.c : Listen to key events and modify hal device objects
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* Copyright (C) 2005 David Zeuthen, <david@fubar.dk>
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* Copyright (C) 2005 Ryan Lortie <desrt@desrt.ca>
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* Copyright (C) 2006 Matthew Garrett <mjg59@srcf.ucam.org>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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**************************************************************************/
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#include <sys/types.h>
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#include <linux/input.h>
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#include "libhal/libhal.h"
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#include "../../logger.h"
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#include "../../util_helper.h"
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static int button_state = FALSE;
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static int button_has_state = FALSE;
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static char *key_name[KEY_MAX + 1] = {
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[0 ... KEY_MAX] = NULL,
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[KEY_AGAIN] = "again",
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[KEY_PROPS] = "props",
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[KEY_FRONT] = "front",
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[KEY_PASTE] = "paste",
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[KEY_SETUP] = "setup",
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[KEY_SLEEP] = "sleep",
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[KEY_WAKEUP] = "wake-up",
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[KEY_SENDFILE] = "send-file",
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[KEY_DELETEFILE] = "delete-file",
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[KEY_PROG1] = "prog1",
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[KEY_PROG2] = "prog2",
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[KEY_MSDOS] = "msdos",
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[KEY_COFFEE] = "coffee",
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[KEY_DIRECTION] = "direction",
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[KEY_CYCLEWINDOWS] = "cycle-windows",
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[KEY_BOOKMARKS] = "bookmarks",
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[KEY_COMPUTER] = "computer",
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[KEY_FORWARD] = "forward",
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[KEY_CLOSECD] = "close-cd",
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[KEY_EJECTCD] = "eject-cd",
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[KEY_EJECTCLOSECD] = "eject-close-cd",
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[KEY_NEXTSONG] = "next-song",
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[KEY_PLAYPAUSE] = "play-pause",
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[KEY_PREVIOUSSONG] = "previous-song",
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[KEY_STOPCD] = "stop-cd",
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[KEY_RECORD] = "record",
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[KEY_REWIND] = "rewind",
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[KEY_PHONE] = "phone",
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[KEY_CONFIG] = "config",
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[KEY_HOMEPAGE] = "homepage",
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[KEY_REFRESH] = "refresh",
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[KEY_SCROLLUP] = "scroll-up",
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[KEY_SCROLLDOWN] = "scroll-down",
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[KEY_KPLEFTPAREN] = "kp-left-paren",
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[KEY_KPRIGHTPAREN] = "kp-right-paren",
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[KEY_PLAYCD] = "play-cd",
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[KEY_PAUSECD] = "pause-cd",
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[KEY_PROG3] = "prog3",
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[KEY_PROG4] = "prog4",
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[KEY_SUSPEND] = "hibernate",
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[KEY_CLOSE] = "close",
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[KEY_FASTFORWARD] = "fast-forward",
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[KEY_BASSBOOST] = "bass-boost",
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[KEY_PRINT] = "print",
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[KEY_CAMERA] = "camera",
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[KEY_SOUND] = "sound",
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[KEY_QUESTION] = "question",
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[KEY_EMAIL] = "email",
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[KEY_SEARCH] = "search",
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[KEY_CONNECT] = "connect",
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[KEY_FINANCE] = "finance",
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[KEY_SPORT] = "sport",
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[KEY_ALTERASE] = "alt-erase",
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[KEY_CANCEL] = "cancel",
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[KEY_BRIGHTNESSDOWN] = "brightness-down",
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[KEY_BRIGHTNESSUP] = "brightness-up",
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[KEY_MEDIA] = "media",
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[KEY_POWER] = "power",
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[KEY_VOLUMEDOWN] = "volume-down",
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[KEY_VOLUMEUP] = "volume-up",
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#ifndef KEY_SWITCHVIDEOMODE
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#define KEY_SWITCHVIDEOMODE 227
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[KEY_SWITCHVIDEOMODE] = "switch-videomode",
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#ifndef KEY_KBDILLUMTOGGLE
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#define KEY_KBDILLUMTOGGLE 228
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[KEY_KBDILLUMTOGGLE] = "kbd-illum-toggle",
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#ifndef KEY_KBDILLUMDOWN
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#define KEY_KBDILLUMDOWN 229
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[KEY_KBDILLUMDOWN] = "kbd-illum-down",
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#ifndef KEY_KBDILLUMUP
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#define KEY_KBDILLUMUP 230
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[KEY_KBDILLUMUP] = "kbd-illum-up",
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#define KEY_BATTERY 236
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[KEY_BATTERY] = "battery",
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#ifndef KEY_BLUETOOTH
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#define KEY_BLUETOOTH 237
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[KEY_BLUETOOTH] = "bluetooth",
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/* we must use this kernel-compatible implementation */
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#define BITS_PER_LONG (sizeof(long) * 8)
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#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
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#define OFF(x) ((x)%BITS_PER_LONG)
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#define BIT(x) (1UL<<OFF(x))
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#define LONG(x) ((x)/BITS_PER_LONG)
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#define test_bit(bit, array) ((array[LONG(bit)] >> OFF(bit)) & 1)
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main_loop (LibHalContext *ctx, FILE* eventfp)
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struct input_event event;
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while (fread (&event, sizeof(event), 1, eventfp)) {
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if (button_has_state && event.type == EV_SW) {
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HAL_INFO (("%s: event.value=%d ; event.code=%d (0x%02x)",
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udi, event.value, event.code, event.code));
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switch (event.code) {
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name = "tablet_mode";
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case SW_HEADPHONE_INSERT:
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name = "headphone_insert";
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long bitmask[NBITS(SW_MAX)];
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/* check switch state - cuz apparently we get spurious events (or I don't know
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* how to use the input layer correctly)
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* 19:08:22.911 [I] event.value=1 ; event.code=0 (0x00)
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* 19:08:22.914 [I] event.value=0 ; event.code=0 (0x00)
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* 19:08:26.772 [I] event.value=0 ; event.code=0 (0x00)
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* 19:08:26.776 [I] event.value=0 ; event.code=0 (0x00)
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* 19:08:26.863 [I] event.value=1 ; event.code=0 (0x00)
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* 19:08:26.868 [I] event.value=0 ; event.code=0 (0x00)
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* 19:08:26.955 [I] event.value=0 ; event.code=0 (0x00)
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* 19:08:26.960 [I] event.value=0 ; event.code=0 (0x00)
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if (ioctl (fileno (eventfp), EVIOCGSW(sizeof (bitmask)), bitmask) < 0) {
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HAL_DEBUG (("ioctl EVIOCGSW failed"));
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int new_state = test_bit (event.code, bitmask);
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if (new_state != button_state) {
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button_state = new_state;
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dbus_error_init (&error);
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libhal_device_set_property_bool (ctx, udi, "button.state.value",
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button_state, &error);
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dbus_error_init (&error);
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libhal_device_emit_condition (ctx, udi,
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} else if (event.type == EV_KEY && key_name[event.code] != NULL && event.value == 1) {
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dbus_error_init (&error);
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libhal_device_emit_condition (ctx, udi,
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key_name[event.code],
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dbus_error_free (&error);
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main (int argc, char **argv)
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LibHalContext *ctx = NULL;
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hal_set_proc_title_init (argc, argv);
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/* setup_logger (); */
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dbus_error_init (&error);
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if ((udi = getenv ("UDI")) == NULL)
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if ((device_file = getenv ("HAL_PROP_INPUT_DEVICE")) == NULL)
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s = getenv ("HAL_PROP_BUTTON_HAS_STATE");
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if (s != NULL && strcmp (s, "true") == 0) {
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button_has_state = TRUE;
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if ((s = getenv ("HAL_PROP_BUTTON_STATE_VALUE")) == NULL)
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button_state = (strcmp (s, "true") == 0);
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if ((ctx = libhal_ctx_init_direct (&error)) == NULL)
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dbus_error_init (&error);
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if (!libhal_device_addon_is_ready (ctx, udi, &error)) {
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eventfp = fopen(device_file, "r");
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hal_set_proc_title ("hald-addon-keyboard: listening on %s", device_file);
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main_loop (ctx, eventfp);
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/* If main_loop exits sleep for 5s and try to reconnect (again). */
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dbus_error_init (&error);
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libhal_ctx_shutdown (ctx, &error);
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libhal_ctx_free (ctx);
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/* vim:set sw=8 noet: */
added
removed
hald/linux/addons/addon-keyboard.c
