static int evdev_handle_device(struct evdev_device *device) { struct input_absinfo absinfo; unsigned long ev_bits[NBITS(EV_MAX)]; unsigned long abs_bits[NBITS(ABS_MAX)]; unsigned long rel_bits[NBITS(REL_MAX)]; unsigned long key_bits[NBITS(KEY_MAX)]; int has_key, has_abs; unsigned int i; has_key = 0; has_abs = 0; device->caps = 0; ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits); if (TEST_BIT(ev_bits, EV_ABS)) { has_abs = 1; ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)), abs_bits); if (TEST_BIT(abs_bits, ABS_WHEEL) || TEST_BIT(abs_bits, ABS_GAS) || TEST_BIT(abs_bits, ABS_BRAKE) || TEST_BIT(abs_bits, ABS_HAT0X)) { /* Device %s is a joystick, ignoring. */ return 0; } if (TEST_BIT(abs_bits, ABS_X)) { ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo); device->abs.min_x = absinfo.minimum; device->abs.max_x = absinfo.maximum; device->caps |= EVDEV_MOTION_ABS; } if (TEST_BIT(abs_bits, ABS_Y)) { ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo); device->abs.min_y = absinfo.minimum; device->abs.max_y = absinfo.maximum; device->caps |= EVDEV_MOTION_ABS; } /* We only handle the slotted Protocol B in weston. Devices with ABS_MT_POSITION_* but not ABS_MT_SLOT require mtdev for conversion. */ if (TEST_BIT(abs_bits, ABS_MT_POSITION_X) && TEST_BIT(abs_bits, ABS_MT_POSITION_Y)) { ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X), &absinfo); device->abs.min_x = absinfo.minimum; device->abs.max_x = absinfo.maximum; ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y), &absinfo); device->abs.min_y = absinfo.minimum; device->abs.max_y = absinfo.maximum; device->is_mt = 1; device->caps |= EVDEV_TOUCH; if (!TEST_BIT(abs_bits, ABS_MT_SLOT)) { device->mtdev = mtdev_new_open(device->fd); if (!device->mtdev) { /* mtdev required but failed to open. */ return 0; } device->mt.slot = device->mtdev->caps.slot.value; } else { ioctl(device->fd, EVIOCGABS(ABS_MT_SLOT), &absinfo); device->mt.slot = absinfo.value; } } } if (TEST_BIT(ev_bits, EV_REL)) { ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)), rel_bits); if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y)) device->caps |= EVDEV_MOTION_REL; } if (TEST_BIT(ev_bits, EV_KEY)) { has_key = 1; ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)), key_bits); if (TEST_BIT(key_bits, BTN_TOOL_FINGER) && !TEST_BIT(key_bits, BTN_TOOL_PEN) && has_abs) { device->dispatch = evdev_touchpad_create(device); } for (i = KEY_ESC; i < KEY_MAX; i++) { if (i >= BTN_MISC && i < KEY_OK) continue; if (TEST_BIT(key_bits, i)) { device->caps |= EVDEV_KEYBOARD; break; } } if (TEST_BIT(key_bits, BTN_TOUCH)) { device->caps |= EVDEV_TOUCH; } for (i = BTN_MISC; i < BTN_JOYSTICK; i++) { if (TEST_BIT(key_bits, i)) { device->caps |= EVDEV_BUTTON; device->caps &= ~EVDEV_TOUCH; break; } } } if (TEST_BIT(ev_bits, EV_LED)) { device->caps |= EVDEV_KEYBOARD; } /* This rule tries to catch accelerometer devices and opt out. We may * want to adjust the protocol later adding a proper event for dealing * with accelerometers and implement here accordingly */ if (has_abs && !has_key && !device->is_mt) { return 0; } return 1; }
static int evdev_handle_device(struct evdev_device *device) { struct input_absinfo absinfo; unsigned long ev_bits[NBITS(EV_MAX)]; unsigned long abs_bits[NBITS(ABS_MAX)]; unsigned long rel_bits[NBITS(REL_MAX)]; unsigned long key_bits[NBITS(KEY_MAX)]; int has_key, has_abs; unsigned int i; has_key = 0; has_abs = 0; device->caps = 0; ioctl(device->fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits); if (TEST_BIT(ev_bits, EV_ABS)) { has_abs = 1; ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)), abs_bits); if (TEST_BIT(abs_bits, ABS_X)) { ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo); device->abs.min_x = absinfo.minimum; device->abs.max_x = absinfo.maximum; device->caps |= EVDEV_MOTION_ABS; } if (TEST_BIT(abs_bits, ABS_Y)) { ioctl(device->fd, EVIOCGABS(ABS_Y), &absinfo); device->abs.min_y = absinfo.minimum; device->abs.max_y = absinfo.maximum; device->caps |= EVDEV_MOTION_ABS; } if (TEST_BIT(abs_bits, ABS_MT_SLOT)) { ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_X), &absinfo); device->abs.min_x = absinfo.minimum; device->abs.max_x = absinfo.maximum; ioctl(device->fd, EVIOCGABS(ABS_MT_POSITION_Y), &absinfo); device->abs.min_y = absinfo.minimum; device->abs.max_y = absinfo.maximum; device->is_mt = 1; device->mt.slot = 0; device->caps |= EVDEV_TOUCH; } } if (TEST_BIT(ev_bits, EV_REL)) { ioctl(device->fd, EVIOCGBIT(EV_REL, sizeof(rel_bits)), rel_bits); if (TEST_BIT(rel_bits, REL_X) || TEST_BIT(rel_bits, REL_Y)) device->caps |= EVDEV_MOTION_REL; } if (TEST_BIT(ev_bits, EV_KEY)) { has_key = 1; ioctl(device->fd, EVIOCGBIT(EV_KEY, sizeof(key_bits)), key_bits); if (TEST_BIT(key_bits, BTN_TOOL_FINGER) && !TEST_BIT(key_bits, BTN_TOOL_PEN) && has_abs) device->dispatch = evdev_touchpad_create(device); for (i = KEY_ESC; i < KEY_MAX; i++) { if (i >= BTN_MISC && i < KEY_OK) continue; if (TEST_BIT(key_bits, i)) { device->caps |= EVDEV_KEYBOARD; break; } } for (i = BTN_MISC; i < KEY_OK; i++) { if (TEST_BIT(key_bits, i)) { device->caps |= EVDEV_BUTTON; break; } } } if (TEST_BIT(ev_bits, EV_LED)) { device->caps |= EVDEV_KEYBOARD; } /* This rule tries to catch accelerometer devices and opt out. We may * want to adjust the protocol later adding a proper event for dealing * with accelerometers and implement here accordingly */ if (has_abs && !has_key && !device->is_mt) { weston_log("input device %s, %s " "ignored: unsupported device type\n", device->devname, device->devnode); return 0; } return 1; }