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udev: input_id: tag pointing sticks as ID_INPUT_POINTINGSTICK

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Also referred to as trackpoint, trackstick. These are marked by recent kernels
through an input prop. Forward that prop as udev property so userspace can
easily determine whether there is a pointing stick present.

These devices were previously marked as ID_INPUT_MOUSE, for backwards
compatibility we keep that in place, the new property is an addition.
This commit is contained in:
Peter Hutterer 2015-03-26 14:08:35 +10:00
parent b604cb9bf6
commit 606df97b6a
2 changed files with 12 additions and 1 deletions
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4
src/shared/missing.h
View File

@ -948,3 +948,7 @@ static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, uns
#ifndef KCMP_FILE
#define KCMP_FILE 0
#endif
#ifndef INPUT_PROP_POINTING_STICK
#define INPUT_PROP_POINTING_STICK 0x05
#endif

9
src/udev/udev-builtin-input_id.c
View File

@ -131,6 +131,7 @@ static void test_pointers (struct udev_device *dev,
const unsigned long* bitmask_abs,
const unsigned long* bitmask_key,
const unsigned long* bitmask_rel,
const unsigned long* bitmask_props,
bool test) {
int is_mouse = 0;
int is_touchpad = 0;
@ -173,6 +174,9 @@ static void test_pointers (struct udev_device *dev,
udev_builtin_add_property(dev, test, "ID_INPUT_JOYSTICK", "1");
}
if (test_bit (INPUT_PROP_POINTING_STICK, bitmask_props))
udev_builtin_add_property(dev, test, "ID_INPUT_POINTINGSTICK", "1");
if (test_bit (EV_REL, bitmask_ev) &&
test_bit (REL_X, bitmask_rel) && test_bit (REL_Y, bitmask_rel) &&
test_bit (BTN_MOUSE, bitmask_key))
@ -232,6 +236,7 @@ static int builtin_input_id(struct udev_device *dev, int argc, char *argv[], boo
unsigned long bitmask_abs[NBITS(ABS_MAX)];
unsigned long bitmask_key[NBITS(KEY_MAX)];
unsigned long bitmask_rel[NBITS(REL_MAX)];
unsigned long bitmask_props[NBITS(INPUT_PROP_MAX)];
const char *sysname, *devnode;
/* walk up the parental chain until we find the real input device; the
@ -248,7 +253,9 @@ static int builtin_input_id(struct udev_device *dev, int argc, char *argv[], boo
get_cap_mask(dev, pdev, "capabilities/abs", bitmask_abs, sizeof(bitmask_abs), test);
get_cap_mask(dev, pdev, "capabilities/rel", bitmask_rel, sizeof(bitmask_rel), test);
get_cap_mask(dev, pdev, "capabilities/key", bitmask_key, sizeof(bitmask_key), test);
test_pointers(dev, bitmask_ev, bitmask_abs, bitmask_key, bitmask_rel, test);
get_cap_mask(dev, pdev, "properties", bitmask_props, sizeof(bitmask_props), test);
test_pointers(dev, bitmask_ev, bitmask_abs, bitmask_key,
bitmask_rel, bitmask_props, test);
test_key(dev, bitmask_ev, bitmask_key, test);
}