--- /dev/null
+/*
+ * input_id - input device classification
+ *
+ * Copyright (C) 2009 Martin Pitt <martin.pitt@ubuntu.com>
+ * Portions Copyright (C) 2004 David Zeuthen, <david@fubar.dk>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with keymap; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <linux/input.h>
+
+/* we must use this kernel-compatible implementation */
+#define BITS_PER_LONG (sizeof(unsigned long) * 8)
+#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
+#define OFF(x) ((x)%BITS_PER_LONG)
+#define BIT(x) (1UL<<OFF(x))
+#define LONG(x) ((x)/BITS_PER_LONG)
+#define test_bit(bit, array) ((array[LONG(bit)] >> OFF(bit)) & 1)
+
+/*
+ * Read a capabilities/name file and return bitmask.
+ * @param path File to open
+ * @param bitmask: Output array; must have max_size elements
+ */
+static void get_cap_mask (const char *path, unsigned long *bitmask, size_t max_size)
+{
+ FILE* f;
+ int i;
+ char text[4096];
+ char* word;
+ unsigned long val;
+
+ f = fopen(path, "r");
+ if (f == NULL) {
+ perror("opening caps file");
+ exit(1);
+ }
+ if (fgets(text, sizeof(text), f) == NULL) {
+ perror("fgets");
+ exit(1);
+ }
+ fclose(f);
+
+ memset (bitmask, 0, max_size);
+ i = 0;
+ while ((word = strrchr(text, ' ')) != NULL) {
+ val = strtoul (word+1, NULL, 16);
+ bitmask[i] = val;
+ *word = '\0';
+ ++i;
+ }
+ val = strtoul (text, NULL, 16);
+ bitmask[i] = val;
+}
+
+/* pointer devices */
+static void test_pointers (const unsigned long* bitmask_abs, const unsigned long* bitmask_key, const unsigned long* bitmask_rel)
+{
+ int is_mouse = 0;
+ int is_touchpad = 0;
+
+ if (test_bit (ABS_PRESSURE, bitmask_abs))
+ is_touchpad = 1;
+
+ if (test_bit (ABS_X, bitmask_abs) && test_bit (ABS_Y, bitmask_abs)) {
+ if (test_bit (BTN_STYLUS, bitmask_key))
+ puts("ID_INPUT_TABLET=1");
+ else if (test_bit (BTN_TOUCH, bitmask_key))
+ is_touchpad = 1;
+ else if (test_bit (BTN_TRIGGER, bitmask_key) ||
+ test_bit (BTN_A, bitmask_key) ||
+ test_bit (BTN_1, bitmask_key))
+ puts("ID_INPUT_JOYSTICK=1");
+ else if (test_bit (BTN_MOUSE, bitmask_key))
+ /* This path is taken by VMware's USB mouse, which has
+ * absolute axes, but no touch/pressure button. */
+ is_mouse = 1;
+ }
+
+ if (test_bit (REL_X, bitmask_rel) && test_bit (REL_Y, bitmask_rel))
+ is_mouse = 1;
+
+ if (is_mouse)
+ puts("ID_INPUT_MOUSE=1");
+ if (is_touchpad)
+ puts("ID_INPUT_TOUCHPAD=1");
+}
+
+/* key like devices */
+static void test_key (const unsigned long* bitmask_key)
+{
+ unsigned i;
+ unsigned long acc;
+ unsigned long mask;
+
+ /* do we have any KEY_* capability? */
+ acc = 0;
+ for (i = 0; i < BTN_MISC/BITS_PER_LONG; ++i)
+ acc |= bitmask_key[i];
+ if (acc > 0)
+ puts("ID_INPUT_KEY=1");
+
+ /* the first 32 bits are ESC, numbers, and Q to D; if we have all of
+ * those, consider it a full keyboard; do not test KEY_RESERVED, though */
+ mask = 0xFFFFFFFE;
+ if ((bitmask_key[0] & mask) == mask)
+ puts("ID_INPUT_KEYBOARD=1");
+}
+
+int main (int argc, char** argv)
+{
+ char capfile[PATH_MAX];
+ unsigned long bitmask_abs[NBITS(ABS_MAX)];
+ unsigned long bitmask_key[NBITS(KEY_MAX)];
+ unsigned long bitmask_rel[NBITS(REL_MAX)];
+
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s <device path (without /sys)>\n", argv[0]);
+ exit(1);
+ }
+
+ /* Use this as a flag that input devices were detected, so that this
+ * program doesn't need to be called more than once per device */
+ puts("ID_INPUT=1");
+
+ snprintf(capfile, sizeof(capfile), "/sys/%s/device/capabilities/abs", argv[1]);
+ get_cap_mask (capfile, bitmask_abs, sizeof (bitmask_abs));
+ snprintf(capfile, sizeof(capfile), "/sys/%s/device/capabilities/rel", argv[1]);
+ get_cap_mask (capfile, bitmask_rel, sizeof (bitmask_rel));
+ snprintf(capfile, sizeof(capfile), "/sys/%s/device/capabilities/key", argv[1]);
+ get_cap_mask (capfile, bitmask_key, sizeof (bitmask_key));
+
+ test_pointers(bitmask_abs, bitmask_key, bitmask_rel);
+
+ test_key(bitmask_key);
+
+ return 0;
+}
SUBSYSTEM!="input", GOTO="persistent_input_end"
KERNEL=="input[0-9]*", GOTO="persistent_input_end"
-SUBSYSTEMS=="usb", IMPORT{program}="usb_id --export %p"
+ENV{ID_INPUT}=="", IMPORT{program}="input_id %p"
+SUBSYSTEMS=="usb", ENV{ID_BUS}=="", IMPORT{program}="usb_id --export %p"
-# well defined boot-subclass usb devices
-SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="03", ATTRS{bInterfaceProtocol}=="01", ENV{ID_CLASS}="kbd", GOTO="serial"
-SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="03", ATTRS{bInterfaceProtocol}=="02", ENV{ID_CLASS}="mouse", GOTO="serial"
+# backwards-compatibility ID_CLASS
+ENV{ID_INPUT_KEYBOARD}=="?*", ENV{ID_CLASS}="kbd"
+ENV{ID_INPUT_MOUSE}=="?*", ENV{ID_CLASS}="mouse"
+ENV{ID_INPUT_JOYSTICK}=="?*", ENV{ID_CLASS}="joystick"
-# other devices
+# other device types which we need for persistent links
DRIVERS=="pcspkr", ENV{ID_CLASS}="spkr", GOTO="serial"
-DRIVERS=="atkbd", ENV{ID_CLASS}="kbd", GOTO="serial"
-DRIVERS=="psmouse", ENV{ID_CLASS}="mouse", GOTO="serial"
ATTRS{name}=="*dvb*|*DVB*|* IR *", ENV{ID_CLASS}="ir", GOTO="serial"
-# joystick (ABS_X || ABS_WHEEL || ABS_THROTTLE) && !BTN_TOUCH && !BTN_DIGI
-ATTRS{modalias}=="input:*-*a[068],*|input:*-*a*,[68],*m*", ATTRS{modalias}!="input:*-*k*14[0A],*r*", \
- ENV{ID_CLASS}="joystick", GOTO="serial"
-
# fill empty serial number
LABEL="serial", ENV{ID_CLASS}=="?*", ENV{ID_SERIAL}=="", ENV{ID_SERIAL}="noserial"
projects / systemd / commitdiff